lgblower，作者roots blower_centrifugal fan_pneumatic conveying-Shandong Longgu Heavy Industry Machinery Co., Ltd.

pneumatic conveying equipment

Pneumatic conveying equipment has good dust-proof effect; it facilitates mechanization and automation, can reduce labor intensity and save manpower; during the conveying process, multiple process operations can be performed at the same time, such as mixing, crushing, sorting, drying, and cooling.

What is a pneumatic conveying system?

Pneumatic conveying system is a comprehensive technology that uses the energy of air flow to transport powder and granular materials in the direction of air flow in a closed pipeline. ‌ It involves many fields such as fluid mechanics, material science, automation technology, etc. It has the characteristics of high transportation efficiency, small footprint, economy and no pollution.
The pneumatic conveying system sends the transported materials quantitatively into the pipeline through a specific feeding device, and uses positive and negative pressure gases (such as air, nitrogen, carbon dioxide or methyl chloride, etc.) to transport the materials to the designated location. The entire process operates automatically, orderly and safely through the control system.
According to the density of particles in the conveying pipeline, pneumatic conveying is divided into two types: dilute phase conveying and dense phase conveying. Dilute phase transportation is suitable for short-distance, high-speed transportation, while dense-phase transportation is suitable for long-distance, low-speed transportation‌.
The pneumatic conveying system has many advantages: the system is airtight, and operations such as heating, cooling, mixing, crushing, drying, and classification dust removal can be performed simultaneously during the conveying process; the equipment is simple, easy to operate, and easy to realize automation; it occupies a small area; it can realize many tasks Click to take materials or feed materials at multiple points.
However, pneumatic conveying is not suitable for materials that contain a lot of water, are sticky, or are prone to static electricity when moving at high speeds.

How does a pneumatic transport system work?

The working principle of the pneumatic transportation system is based on the principle of pneumatics, which uses compressed air or airflow to form power in the pipeline to promote the movement of materials.
The pneumatic transportation system mainly consists of compression devices, conveying pipelines, control devices, etc. The compression device compresses the air and sends it into the pipeline to form a certain air flow, which pushes the container to move in the pipeline.
At the starting point of the pipeline, the material to be transported is loaded into a container, which is usually cylindrical or spherical to reduce resistance and friction. When the container enters the pipe, the air flow pushes it toward the other end of the pipe. At the end of the pipeline, the container is taken out through the control device to complete the material transfer process.
‌Specific applications of pneumatic transportation systems‌ include applications in hospitals, restaurants, heavy industry, highways, aerospace and other fields.
In hospitals, pneumatic transport systems are used to transport blood specimens, medicines and other items;
In restaurants, used to transport food quickly;
In heavy industry and highway construction, used for rapid transportation of raw materials and materials;
In the field of aerospace, it is used to transport inspection samples, etc.
The advantages of the pneumatic transportation system are that it is efficient, safe, and environmentally friendly. It can significantly increase the transmission speed and efficiency and reduce labor costs‌.

Pneumatic conveying equipment manufacturers

Since its establishment in the early 1990s, Longgu Heavy Industry has become a diversified machinery enterprise integrating fan and pneumatic conveying equipment system engineering. Our company has advanced computer-aided design and manufacturing, CNC machining technology, and adopts information technologies such as computer-aided design and CAPPCT to improve product design and manufacturing accuracy and shorten the design and manufacturing cycle.
Shandong Longgu Heavy Industry Machinery Co., Ltd. has imported advanced and high-precision machining equipment from many countries, including fully automatic machining centers, CNC boring and milling machines, and dynamic balancing instruments. It has a high-level, large-scale, and modern mechanical processing and manufacturing workshop.
The company has completed the implementation and control of its internal quality management system, achieving independent quality control of products from research and development design to finished product delivery. It has established and improved a full process self-control system from design and production to quality, installation, and service, providing sufficient basis and reliable guarantee for the stability and durability of products.
We have cooperated with higher education institutions such as Shandong University, Shandong University of Technology, and Southwest University of Technology to strengthen the research and development of key core technologies. We have overcome technical difficulties and developed new products such as diesel engine driven Roots blowers, water-cooled dual tank Roots blowers, and low-noise Roots blowers, filling multiple industry gaps.
At present, our company's main products include LGSR three leaf Roots blower, LGSR-V Roots vacuum pump, LGSR-H high-pressure blower series, bipolar series high-pressure, gas pressurized explosion-proof, pneumatic conveying series fans, steam compressors, LGMJ dense series fans, rotary fans, centrifugal fans, etc.
Our company's products are widely used in industries such as sewage treatment, pneumatic conveying, vacuum packaging, grain processing, electricity, petrochemicals, cement, mining, and special gas pressurized conveying.
We have close cooperative relationships with top domestic enterprises such as Sande Group, COFCO Group, and Shanshui Cement. Our company's sales outlets and after-sales service centers are located throughout the country and exported to countries such as Malaysia, India, Kyrgyzstan, Nigeria, etc.
The company adheres to the business philosophy of "product quality as the lifeblood of the enterprise", the work attitude of "being down-to-earth and doing things seriously", and the brand awareness of "self inspection by everyone and specialized quality inspection".
We strive to create products with excellent performance and smooth operation, and dedicate ourselves to our customers.

5 10 月 2024

dilute phase pneumatic conveying

What is dilute phase pneumatic conveying?

The basic principle of dilute phase pneumatic conveying is to use air flow to suspend solid particles and transport them to the target location through pipelines. During the transportation process, the air flow generates drag force on the solid particles, causing them to move with the air flow. The conveying speed of dilute phase pneumatic conveying is usually high, which can reach several meters to tens of meters per second, so the conveying distance is relatively long.
The advantages of dilute phase pneumatic conveying include its fast conveying speed, long conveying distance, small footprint, and automatic control.
In dilute phase pneumatic conveying, air flow parameters and solid particle characteristics are important factors affecting the conveying effect. Parameters such as air flow speed, air flow pressure, and air flow temperature will affect the suspension state and conveying speed of solid particles. At the same time, the particle size, density, shape and other characteristics of solid particles will also affect the transportation effect. Therefore, when selecting dilute-phase pneumatic conveying technology, the air flow parameters and conveying equipment need to be determined based on specific material characteristics and conveying requirements.
In practical applications, dilute-phase pneumatic conveying systems usually consist of conveying pipelines, gas source equipment, feeding equipment, control equipment, etc. The conveying pipeline is responsible for transporting solid particles from the feeding equipment to the target location. The air source equipment provides the required air flow. The feeding equipment is responsible for sending the solid particles into the conveying pipeline. The control equipment is responsible for monitoring and controlling the entire conveying process.
In the metallurgical industry, dilute phase pneumatic conveying also plays an important role. For example, in the blast furnace ironmaking process, the charge needs to be transported and distributed. Dilute phase pneumatic conveying can achieve rapid and uniform charge distribution, thereby improving the smelting efficiency and output of the blast furnace.

What is the difference between lean phase and dense phase?

‌The main difference between dilute phase and dense phase lies in the density and conveying characteristics of materials during transportation. ‌ Dilute phase usually refers to materials dispersed in a large amount of gas during transportation, while dense phase means materials are transported relatively densely.

What are the different types of pneumatic conveying?

‌Pneumatic conveying mainly includes the following types: dilute phase conveying, dense phase conveying, suction pneumatic conveying, pressure conveying pneumatic conveying, mixed pneumatic conveying and flow pneumatic conveying. ‌
Dilute phase transportation and dense phase transportation are distinguished according to the state of the material in the pipeline. During dilute phase transportation, the solid content is lower than 1-10kg/m³, and the operating gas speed is high, usually 18-30m/s, which is suitable for short-distance transportation. During dense phase transportation, the solid content is 10-30kg/m³ or the solid-gas ratio is greater than 25, and the operating gas speed is low, which is suitable for long-distance transportation.
Suction pneumatic conveying and pressure-feeding pneumatic conveying are distinguished based on the relationship between air flow pressure and atmospheric pressure. During suction pneumatic conveying, the pressure in the pipeline is lower than atmospheric pressure, and the negative pressure is generated by the fan to suck in the material, which is suitable for multi-point picking and short-distance transportation. In pressure-feeding pneumatic conveying, the pressure in the pipeline is higher than atmospheric pressure, and materials are pushed through positive pressure, which is suitable for long-distance and large-volume conveying.
Hybrid pneumatic conveying is a combination of suction conveying and pressure conveying. It can transport materials over long distances at multiple points, but the equipment is complex and the cost is high. Streaming pneumatic conveying is a special suspension conveying method, suitable for conveying large amounts of powdery materials.
Each type of pneumatic conveying has its specific application scenarios, advantages and disadvantages. For example, dilute phase conveying has simple operation but limited distance; dense phase conveying has long distance but complex equipment; suction type is suitable for multi-point picking but short distance; pressure feeding type is suitable for long-distance transportation but complex equipment. Choosing the right pneumatic conveying method can improve efficiency and reduce costs.

5 10 月 2024

Pneumatic conveying system

Pneumatic conveying system manufacturer

At present, Shandong Longgu Heavy Industry Machinery Co., Ltd.'s main products include LGSR three leaf Roots blower, LGSR-V Roots vacuum pump, LGSR-H high-pressure blower series, bipolar series high-pressure, gas pressurized explosion-proof, pneumatic conveying series fans, steam compressors, LGMJ dense series fans, rotary fans, centrifugal fans, etc.
Our company's products are widely used in industries such as sewage treatment, pneumatic conveying, vacuum packaging, grain processing, electricity, petrochemicals, cement, mining, and special gas pressurized conveying.
We have close cooperative relationships with top domestic enterprises such as Sande Group, COFCO Group, and Shanshui Cement. Our company's sales outlets and after-sales service centers are located throughout the country and exported to countries such as Malaysia, India, Kyrgyzstan, Nigeria, etc.

Pneumatic conveyor working principle

The working principle of a pneumatic conveyor is to use the action of air flow to transport materials from one place to another. ‌It generates airflow by ‌compressing air or other gases to suspend materials in the airflow, thereby achieving fast and efficient transportation. Specifically, the working principle of a pneumatic conveyor is based on the principle of pneumatic conveying. First, air flow is generated by compressed air or other gases to form a certain air flow speed and pressure. Then, the material is sent into the conveying pipe through the feeding device (such as the feeding hopper). The material will be picked up by the air flow, suspended in the air flow, and transported along the pipe with the push of the air flow. Finally, the materials are discharged to the destination through the discharge port. ‌
The structure of a pneumatic conveyor mainly includes a feeding device, a pipeline system, an air source device, a separation device, a control system, etc. The feeding device is responsible for feeding materials into the conveying pipeline. Common ones include feeding hoppers, rotary valves, etc. The pipeline system is the main channel for material transportation. The air source device provides the necessary compressed air or other gases. The separation device is used to separate materials and gases. The control system is used for automatic control of the entire process.
Pneumatic conveyors have the advantages of simple structure, easy operation, large conveying capacity, long conveying distance, and high conveying speed. Therefore, they are widely used in plastics, casting, chemical industry, food processing and other industries.

What is the pressure in a pneumatic conveyor?

Extremely low pressure
In the pneumatic conveyor pipeline, if the air pressure is relatively low, usually between 0.2-0.5MPa, it belongs to the extremely low pressure category. In this case, the operating effect of the pneumatic conveyor will be greatly affected, such as slow material conveying speed, insufficient flow, and even material jamming, which affects production efficiency.
Low pressure
The low-pressure category refers to the air pressure in the pneumatic conveyor pipeline between 0.5-0.7MPa. Although it is higher than the extremely low pressure, it is still low. Under low pressure conditions, the material conveying speed of the pneumatic conveyor can be accelerated and the flow rate will also increase, but if it exceeds a certain range, its operating effect will still be affected.
Medium pressure
The medium pressure range refers to the air pressure in the pneumatic conveyor pipeline between 0.7-1.0MPa. In this range, the operating effect of the pneumatic conveyor can be fully exerted. The material transportation speed is faster and the flow rate is larger, which is suitable for many production scenarios.
4.High pressure
The high-pressure range refers to the air pressure in the pneumatic conveyor pipeline being above 1.0-1.5MPa. In this case, the material conveying speed of the pneumatic conveyor is very fast and the flow rate is also very large, but too high air pressure can lead to safety problems such as pipeline bursting.

Pneumatic conveying system Diagram

5 10 月 2024

centrifugal fan vs axial fan

Centrifugal fan vs axial fan

‌The main differences between centrifugal fans and axial fans are their working principles, air flow direction, efficiency and performance, noise and vibration, structure and maintenance, and application fields. ‌
Working principles are different‌:
The centrifugal fan generates centrifugal force through the high-speed rotation of the impeller, projects the gas outward from the center, and then discharges it through the volute tube, thereby increasing the pressure and changing the flow rate of the gas.
Axial flow fans rely on the forward power generated by the rotation of airfoil blades to inhale and discharge air along the axial direction.
Airflow directions are different‌:
The gas flow direction of centrifugal fans is away from the center of the impeller, and usually exhibits the characteristics of high pressure and low flow rate.
The gas flow direction of the axial flow fan is within the impeller axis line, usually showing the characteristics of low pressure and high flow rate.
Efficiency is different from performance‌:
Centrifugal fans have higher efficiency and can produce larger air volume and higher wind pressure. They are suitable for application scenarios that require large flow and high wind pressure.
The efficiency of axial flow fans is relatively low and is suitable for environments that require smaller air volumes but pay more attention to static pressure.
Noise is different from vibration‌:
Centrifugal fans are generally noisier than axial fans because their blades produce higher levels of noise.
Axial flow fans are relatively quiet and suitable for environments where low noise is required.
Structure and maintenance are different‌:
The structure of centrifugal fans is usually complex and difficult to maintain and repair. Moreover, the impeller and casing are usually designed as a whole. Once damaged, they need to be replaced as a whole.
The structure of the axial flow fan is relatively simple and easier to maintain and repair.
Different application fields‌:
Centrifugal fans are widely used in applications requiring large flow and high wind pressure, such as ventilation and air conditioning systems.
Axial flow fans are more commonly used in environments that require smaller air volumes but pay more attention to static pressure, such as offices, shops, etc.‌.

centrifugal fan vs axial fan

centrifugal fan working principle

The working principle of a centrifugal fan is to use a high-speed rotating impeller to accelerate the gas, and then convert the kinetic energy into potential energy (pressure) by decelerating and changing the flow direction. ‌‌
The centrifugal fan is mainly composed of air inlet, impeller, deflector, casing and motor. When working, the motor drives the impeller to rotate at a high speed, and the gas from the air inlet is sucked into the impeller. After the impeller accelerates the gas, it is discharged through the deflector and casing. The working principle of the centrifugal fan is based on the action of centrifugal force. When the impeller rotates at high speed, the gas is accelerated to the action of centrifugal force, resulting in a pressure difference. The pressure of the gas at the air inlet is low, while the pressure of the gas at the air outlet is high. Therefore, the gas will flow from the air inlet to the air outlet along the pressure gradient.

centrifugal fan vs axial fan

Which is better axial fan or centrifugal fan?

‌Axis fans and centrifugal fans each have their own advantages and disadvantages and are suitable for different occasions. ‌When choosing, comprehensive considerations should be made based on actual needs and budget.
Axial fans and centrifugal fans work on different principles. Axial fans rotate axially and use the centrifugal force of the impeller to accelerate the gas, thereby increasing the pressure of the gas. The centrifugal fan accelerates the flow of air or other gases through centrifugal rotation, thereby converting kinetic energy into static pressure and blowing the gas to the designated position.
In terms of applicable occasions, centrifugal fans are suitable for occasions that require larger air volume and higher pressure, such as ventilation in large factories, warehouses, sports venues and other places. Axial flow fans are suitable for occasions that require smaller air volume and higher speed, such as local ventilation in computer rooms, laboratories, production workshops and other places.
In terms of performance characteristics, centrifugal fans have large air volume and high pressure, but they are noisy, more expensive, and have a longer service life. Axial flow fans have small air volume, moderate pressure, relatively low price, and simple installation and maintenance.
In terms of efficiency, centrifugal fans perform better in higher pressure ranges, especially when dealing with high-concentration exhaust gases, and can more effectively reduce energy consumption and emissions. Axial flow fans have high efficiency under large flow and low pressure conditions, and are suitable for ventilation and heat dissipation and other occasions that require high air volume but relatively low pressure requirements.
In terms of cost-effectiveness, the cost of centrifugal fans is relatively high, but after long-term operation, due to their stable performance and high efficiency, they can save a lot of energy and operating costs. Axial flow fans can also meet the needs in some situations, are low-cost, and are suitable for short-term use or local ventilation.

centrifugal fan vs axial fan

Why use a centrifugal fan?

‌Centrifugal fans are widely used in many fields, including construction, industrial production, environmental management and air conditioning systems. ‌
First of all, ‌in the construction industry‌, centrifugal fans are used for ventilation and air circulation, improving air quality and providing a good and comfortable working and living environment. For example, in large shopping malls, convention and exhibition centers, office buildings and other places, centrifugal fans provide fresh air by discharging dirty air to maintain indoor air quality and comfort.
Secondly, in the industrial field, centrifugal fans are widely used in factories, workshops and other places to eliminate toxic and harmful gases, control temperature, eliminate dust and odors, etc., and create a good working environment for employees. For example, in chemical, mining, electric power and other industries, centrifugal fans are often used to transport gases, discharge waste gases, etc., to improve production efficiency and reduce energy consumption.
In addition, in the air conditioning system, centrifugal fans are an important part of the air conditioning system and are used for air circulation, pressurization, exhaust, etc. to ensure the circulation and cleanliness of indoor air. Provide comfortable temperature and humidity indoors through air supply, return air, exhaust, etc.
Finally, in terms of environmental management, centrifugal fans are used in facilities such as urban sewage treatment plants to send gas to subsequent treatment equipment for processing, purify the air, and reduce environmental pollution. For example, in environmental protection facilities such as exhaust gas treatment, smoke purification, and gas adsorption, centrifugal fans can effectively extract and discharge harmful gases and particulate matter from the atmosphere.

centrifugal fan vs axial fan

Are centrifugal or axial fans quieter?

Axial fans are generally quieter than centrifugal fans.
When an axial flow fan is working, the blades push the air to flow in the same direction as the axis. This structure makes the air volume larger, but it also means that the noise is relatively small.
The reason why axial flow fans make less noise is that the airflow direction is parallel to the axis. This design makes the airflow smoother and reduces the generation of turbulence and noise. In addition, axial fans are usually used in systems with low static pressure that require higher airflow levels, which also gives them certain advantages in noise control.
In contrast, when a centrifugal fan is working, the gas flow direction is perpendicular to the rotating axis. Although this design provides greater wind pressure, it also brings greater noise. Although centrifugal fans can provide stable air supply in high-pressure systems, their structure and working method result in relatively loud noise.
To sum up, axial fans are generally quieter than centrifugal fans due to their design where the airflow direction is parallel to the axis.

30 9 月 2024

centrifugal fan working principle

centrifugal fan application / centrifugal fan working principle

Centrifugal blower is a commonly used fan equipment. Its main purpose is to transport, circulate, pressurize or discharge air, gas or dust and other substances. It is widely used in industry, construction, metallurgy, chemical industry, electric power, environmental protection and other fields. The following are the main uses of centrifugal blowers:
1.Ventilation: Centrifugal blowers can be used for ventilation in buildings to eliminate indoor odors, moisture, and turbidity, and keep indoor air fresh and comfortable.
2.Heating and cooling: Centrifugal blowers can be used as part of a heating or cooling system to regulate the temperature of a room or equipment by circulating air or conducting heat.
3.Enhance combustion: The centrifugal blower can be used to pressurize the gas combustion during the combustion process to improve combustion efficiency and combustion stability.
4.Air guide and exhaust: Centrifugal blowers can be used in air guide ducts or systems to provide gas power for other machines or equipment, and can also be used to discharge waste gas, flue gas or dust.
5.Dust removal and cleaning: Centrifugal blowers are often used in dust removal systems in industrial production. By generating strong wind, dust or other pollutants in the discharged materials are collected and filtered to keep the air clean.
6.Drying and drying: Centrifugal blowers can be used in the drying and drying process in industrial production to take away moisture from the surface of materials through wind force and speed up the drying speed.
7.Gas supply boosting: Centrifugal blowers can be used to pressurize or supply gas, such as oxygen supply systems, compressed air supply, etc.
8.Metallurgical process: Centrifugal blowers are widely used in the metallurgical industry, such as ventilation, blasting and pressurization of metallurgical furnaces, blast furnaces, steel-making furnaces, etc.

How does a centrifugal blower work?centrifugal fan working principle

The working principle of a centrifugal blower is to use the centrifugal force generated by a working wheel equipped with many blades to squeeze the air to achieve a certain air volume and pressure.
When the motor rotates, the impeller rotates with it. When the impeller rotates, it generates centrifugal force to throw the air out of the impeller. The air is collected in the casing. Due to the slow speed and high pressure, the air is discharged from the ventilator outlet and flows into the pipe. When the air in the impeller is discharged, a negative pressure is formed. The air outside the suction port is forced into the impeller under the action of atmospheric pressure, so that the impeller continues to rotate and the air continues to flow in the pipe under the action of the ventilator.
Specifically, the working process of the centrifugal blower can be divided into the following steps:
‌Gas entry‌: Gas enters the impeller from the axial direction, and the impeller rotates at high speed to generate centrifugal force.
Gas acceleration‌: The gas is affected by centrifugal force in the impeller, is accelerated and thrown toward the casing.
‌Kinetic energy conversion‌: The gas decelerates in the diffuser, kinetic energy is converted into pressure energy, and the pressure increases.
‌Gas discharge‌: Gas is discharged from the ventilator outlet and enters the pipe.
‌Circulation‌: Due to the negative pressure caused by the outflow of gas, outside air is automatically replenished and enters the impeller, and the cycle proceeds‌.

centrifugal fan working principle

Types of centrifugal fans

The types of centrifugal fans mainly include the following: single-suction centrifugal fans, double-suction centrifugal fans, high-pressure centrifugal fans, static pressure box-type centrifugal fans and medium-pressure centrifugal fans‌. Each of these types of centrifugal fans has its own specific application scenarios and performance characteristics.
‌Single-suction centrifugal fan‌: Single-suction centrifugal fan, also known as front-suction centrifugal fan, is suitable for transporting general gases and has a small air volume range.
Double-suction centrifugal fan‌: Double-suction centrifugal fan, also known as rear-suction centrifugal fan, is suitable for use when pressure is high, air volume is large, and starting torque is small.
‌High-pressure centrifugal fan‌: High-pressure centrifugal fan is mainly used to transport high-pressure gas, such as blowers, compressors, etc.
‌Static pressure box-type centrifugal fan‌: often used to eliminate noise and vibration during work and increase air volume and wind pressure.
Medium-pressure centrifugal fan‌: Suitable for transporting gases with high dust content, high flue gas temperature or condensation water, etc.
In addition, centrifugal fans can be further subdivided according to different classification standards. For example, according to pressure and function, there are ventilators, blowers and compressors; according to working principles, there are centrifugal fans, axial fans and rotary fans. Each type of fan has its own unique design and applicable scenarios to meet different industrial and civil needs‌.

centrifugal fan working principle

What is the difference between a centrifugal fan and a blower?

The main differences between centrifugal fans and blowers are their working principles, application scenarios, pressure and flow characteristics, and efficiency and energy consumption. ‌
The working principle is different‌. The centrifugal fan relies on a high-speed rotating impeller to generate centrifugal force to accelerate and discharge the gas. The gas gains kinetic energy under the action of the impeller and is discharged. A blower also uses centrifugal force generated by an impeller to move air, but its design is usually more compact and suitable for achieving high air flow at lower pressure.
The application scenarios are different. Centrifugal fans are widely used in factory ventilation, cooling towers, vehicle and ship ventilation, boiler and industrial furnace ventilation and other fields. Blower blowers are typically used in applications that require higher air flows, such as forced-air heating systems, air conditioning equipment, and industrial drying.
‌Pressure and flow characteristics are different‌. The exhaust pressure of centrifugal fans is low, but the flow rate is large. It is suitable for occasions where the pressure requirement is not high but a large amount of air flow is required. Blower, on the other hand, can achieve higher airflow at lower pressure and is suitable for applications requiring high airflow.
Efficiency and energy consumption are different. While centrifugal fans can achieve higher efficiencies, blowers are more efficient in applications that require high airflow at lower pressures because their compact design and high-speed operation help save energy.

30 9 月 2024

centrifugal fan blower

What is the function of centrifugal fan blower?

Centrifugal blower is a common fluid mechanical equipment that transports or compresses gas through centrifugal force. It is widely used in various industries such as metallurgy, chemical industry, electric power, and water treatment. Its main functions include the following aspects:
1.Air delivery: Centrifugal blowers can deliver a certain gas flow to a designated location. For example, in the industrial production process, air needs to be transported to sintering furnaces, furnaces and other equipment, and centrifugal blowers can play an important role.
2.Compressed air: A centrifugal blower can compress air under atmospheric pressure into high-pressure gas. In fields such as chemical industry and petroleum, air compressors can provide the required compressed air for program operations, equipment opening, and combustion.
3.Exhaust gas: In some production processes, some toxic and harmful gases will be produced, which need to be discharged through the exhaust system. Centrifugal blower is one of the important exhaust equipment.

The working principle and characteristics of centrifugal blower

The working principle of the centrifugal blower is to use centrifugal force to suck in the gas, and then compress the gas through the rotation of the impeller and discharge it. The biggest feature of the centrifugal blower is that it has the advantages of large flow rate and high pressure, and can adapt to the needs of different industries and different scales.
When using a centrifugal blower, you need to pay attention to the following points:
1.Select the appropriate centrifugal blower model and specifications, and accurately match them according to actual needs.
2.Carry out regular cleaning and maintenance to ensure the normal operation of the centrifugal blower and prevent potential damage to the equipment caused by pollutants.
3.Adjust the voltage and frequency of the centrifugal blower to ensure normal operation and long-term use of the equipment.

Recommendations for the correct use and maintenance of centrifugal blowers

1.Before starting the centrifugal blower, you need to check whether there are any abnormalities in the equipment and whether the voltage is normal to ensure normal operation.
2.The centrifugal blower needs to be used in a dry and well-ventilated place, and make sure there are no flammable, explosive or other dangerous substances around it.
3.Regularly carry out maintenance work such as oil filter, motor angkara and air leakage detection of the centrifugal blower to avoid equipment failure.
4.For high temperature or corrosive gases, centrifugal blowers made of special materials can be used to ensure the endurance and service life of the equipment.
In general, centrifugal blowers are widely used in various fields, and their functions and characteristics have attracted more and more attention. Therefore, the correct use and maintenance of centrifugal blowers can not only ensure the normal operation of the equipment, but also improve its service life and work efficiency.

What is the difference between a centrifugal blower and a Roots blower?

1.The working principle is different. The centrifugal fan uses curved blades to throw the gas to the casing by centrifugal force, while the Roots blower uses two 8-shaped blades. The gap between them is very small. The squeezing of the blades squeezes the gas to the outlet.
2.Due to different working principles, generally their working pressures are different. The outlet pressure of Roots blower is relatively high, while the centrifugal blower is relatively small.
3.The air volume is different. Roots blowers are generally used in places where the air volume is not high but the pressure is high, while centrifugal fans are used in places where the pressure is low and the air volume is high.
4.The manufacturing precision is different. Roots blowers require high precision and strict assembly requirements, while centrifugal fans are relatively loose. Generally speaking, Roots blowers have high pressure and small air volume; centrifugal blowers have high air volume and low pressure! Therefore, the use occasions are distinguished according to the required air volume and wind pressure.

29 9 月 2024

fan centrifugal

types of centrifugal fans / fan centrifugal

According to different impeller types, centrifugal fans can be divided into the following categories:
1.Front-spray centrifugal fan: The impeller is of the front-spray type, and the gas enters vertically from the center of the impeller. The air volume is small and the pressure is low. It is often used in small ventilation or air delivery drying equipment.
2.Rear-jet centrifugal fan: There is a nozzle behind the impeller, and the incoming gas is sprayed to the back of the impeller, which can produce high gas pressure and air volume. It is suitable for a variety of ventilation, ventilation and heating/cooling applications.
3.Pull-type centrifugal fan: The impeller is reversed, which means that the impeller faces outward. It is suitable for processing high-concentration gases containing solid impurities, and can also be used for applications involving higher air flow speeds.
4.Diagonal flow centrifugal fan: The axis of the impeller and the axis of the air inlet form a certain angle. After the gas in the air inlet enters the impeller, it is forced to turn to the exhaust port along the diagonal flow channel, so that the gas flows through the impeller. Improve efficiency.
According to different characteristics, centrifugal fans can be divided into the following categories:
1.Medium-pressure centrifugal fans: Centrifugal fans whose main field is the medium-pressure range of 50~300Pa can handle a certain amount of air, dust and other impurities, and are often used in air conditioning and ventilation systems.
2.Low-pressure centrifugal fan: The air pressure is below 50Pa. It is mainly applicable to cold winter heating equipment.
3.High-pressure centrifugal fans: Centrifugal fans with a main range of 300~3000Pa have strong processing capabilities and high requirements for noise and vibration. They are suitable for oxygen generation, hydroxide escape, catalyst regeneration, etc.
4.Axial flow centrifugal fan: The impeller has a spiral line at a 45° angle, which can handle low pressure and high flow conditions. It is the first choice for large ventilation and air conditioning equipment.

Centrifugal fan working principle

The working principle of a centrifugal fan is to use a high-speed rotating impeller to accelerate the gas, and then convert the kinetic energy into potential energy (pressure) by decelerating and changing the flow direction.
The centrifugal fan is mainly composed of air inlet, impeller, deflector, casing and motor. When working, the motor drives the impeller to rotate at a high speed, and the gas from the air inlet is sucked into the impeller. After the impeller accelerates the gas, it is discharged through the deflector and casing. The working principle of the centrifugal fan is based on the action of centrifugal force. When the impeller rotates at high speed, the gas is accelerated to the action of centrifugal force, thus creating a pressure difference. The pressure of the gas at the air inlet is low, while the pressure of the gas at the air outlet is high. Therefore, the gas will flow from the air inlet to the air outlet along the pressure gradient.

Centrifugal fan application

1.Can be used for ventilation, cooling and dust exhaust:
(1) Centrifugal fans are widely used and can be used in factories, workshops, warehouses and other departments to ventilate and speed up air circulation to ensure fresh air in these places, which is helpful for the purification of the working environment and the health of workers. At the same time, Equipped with centrifugal fans in factory warehouses to dry the air, it is helpful to preserve mechanical equipment or other industrial products.
(2) Centrifugal fans can also be used in mines and tunnels to help circulate air in mines and tunnels. Fresh air can re-enter and discharge dirty air in a timely manner. Moreover, centrifugal fans can also play a role in dust removal and help It is used to improve the air transparency in mines and tunnels and improve the working environment of mine and tunnel workers.
(3) Centrifugal fans can be used in cars, ships and buildings to provide ventilation and promote the replacement of fresh air, so that there is sufficient fresh air inside cars, ships and buildings.
2.Ventilation and draft induction:
At present, centrifugal fans are commonly used in industrial boilers, gas furnaces, and coal-fired furnaces. They mainly play the role of ventilation and draft induction, fully supplying the oxygen-rich air needed for industrial furnace production, allowing the industrial furnace to burn more fully, and the furnace temperature reaches the production level. When needed, it can also improve the production and working environment of industrial furnace rooms and eliminate harmful gases in a timely manner.
3.Drying and cooling in agricultural production:
In large agricultural processing plants, food processing plants and other places, centrifugal fans can inject a large amount of air, promote air flow, promote the drying of grains, wheat, and grain, and facilitate timely storage; centrifugal fans can be used for the selection of impurities such as wheat, grains, etc. After treatment, wheat and grains are purer and have fewer impurities.
4.Inflate and push:
The Longgu centrifugal fan can create artificial wind source. The centrifugal fan can use its own characteristics to create artificial wind to inflate large hovercraft or other inflatable objects, or be used as power to propel the hovercraft forward in the water.
Centrifugal fans have many functions and uses and are used in pneumatic conveying, sewage treatment, powder conveying, food processing, aquaculture and other industries.

What is a centrifugal fan?

The centrifugal fan is a ventilation, ventilation or air supply equipment designed and manufactured according to Euler's theorem and the law of conservation of mass. It is a fan that uses the kinetic energy of the rotor to increase the gas pressure, or uses the kinetic energy of the inlet speed to correspondingly reduce the static pressure to reach a certain air volume.
Centrifugal fans are not only widely used in industrial and civil buildings in air conditioning, environmental protection, refrigeration, heating, drying and other fields, but also have important applications in transportation, mining, metallurgy, energy and other fields. Its main functions are: increasing air pressure, flow, forming airflow, etc.
The centrifugal fan is mainly composed of a motor, volute, impeller, air inlet and outlet, pipe opening, centrifuge oil plug, inlet air chamber and other components. Among them, the motor is powered by a power supply to drive the impeller to rotate; the impeller is the core part of the centrifugal fan. Its speed, impeller outer diameter, blade angle and other factors will affect the gas flow and wind pressure of the centrifugal fan. At the same time, the material of the impeller also affects the use of the centrifugal fan. Lifespan and reliability are greatly affected.
The function of the volute is to convert the kinetic energy of rotation into static heat energy, thereby increasing the air pressure; the air inlet and outlet are used to introduce and discharge gas; the pipe opening is used for pipe connection to facilitate gas transportation; the centrifuge oil plug is used to lubricate the centrifuge bearings to reduce wear; the inlet air chamber is used to increase the inlet kinetic energy and eliminate the difference in upper and lower wind speeds.
The most common types of centrifugal fans include single-suction centrifugal fans, double-suction centrifugal fans, centrifugal fans with guide vanes, centrifugal fans without guide vanes, diagonal flow centrifugal fans, centrifugal fans, and centrifugal fans.
Features
1.Generate greater air volume and pressure: Because the centrifugal fan adopts centrifugal force in physical principles, it can produce greater air volume and pressure, thereby achieving more effective ventilation and exhaust.
2.Simple structure: Compared with other ventilation equipment, the centrifugal fan has a very simple structure and is very convenient to use and maintain.
3.Various models: There are many models of centrifugal fans to meet the needs of different occasions, such as: single suction centrifugal fan, double suction centrifugal fan.

29 9 月 2024

twin lobe roots blower

What is twin lobe roots blower?

The ‌twin lobe Roots blower‌ is a positive displacement blower. Its working principle is based on the relative movement of two blade-shaped rotors in the cylinder to compress and transport gas. This kind of fan has a simple structure and is easy to manufacture. It is suitable for gas transportation and pressurization in low-pressure situations, and can also be used as a vacuum pump.
The main features of the double-blade Roots blower include friction-free impeller rotation, no need for lubrication, and the operating temperature should usually not exceed 40°C.
Its working principle is similar to that of a gear pump. Each rotor is equivalent to a gear with only two teeth. It relies on the change in the volume of the working chamber formed by the rotation of two "8"-shaped rotors with involute shapes to transport gas.
This type of fan has a simple structure and is easy to manufacture. It is widely used in aquaculture oxygenation, sewage treatment aeration, cement transportation and other fields. It is especially suitable for gas transportation and pressurization systems in low-pressure situations.

Twin lobe roots blower working principle

The working principle of Roots blower can be simply summarized into the following steps:
1.Suction stage: When the rotor rotates, the volume of the chamber gradually increases, forming a low-pressure area.This low-pressure area attracts outside air into the chamber.
2.Compression stage: As the rotor continues to rotate, the volume of the chamber gradually decreases.This process causes the air to become compressed, increasing its pressure.
3.Exhaust stage: When the volume of the chamber reaches the minimum value, the compressed air will be discharged from the chamber.At this time, the rotation of the rotor will increase the volume of the chamber again to prepare for the next round of suction.
By repeating the above steps, the Roots blower can continuously suck in, compress and discharge air.This working principle enables Roots blowers to produce high-pressure, high-flow airflow.

Twin lobe air blower specifications

Roots blower compressor uses

roots blower uses
‌Roots blowers‌ are widely used in many industries and fields, mainly including:
‌Sewage treatment‌: In the sewage treatment industry, roots style blowers are widely used in aeration, stirring, mixing and other aspects to ensure the smooth progress of the sewage treatment process.
‌Pneumatic conveying system‌: roots style blowers are used to transport feed, lime powder, monosodium glutamate, soybean skin, silica and other powdery materials, as well as grain suction machines or crane suction vacuum pumps in grain transportation to ensure the effectiveness of materials transmission.
‌Aquaculture‌: In aquaculture, roots style blowers use micropore aeration technology to oxygenate water quality and improve breeding efficiency.They are important equipment in the aquaculture industry.
‌Coal chemical industry‌: In the coal chemical industry, Roots blowers are used in sewage treatment and different processes, playing an important role in improving production efficiency and product quality‌.
‌Dust removal industry‌: Roots blowers are also used in the dust removal industry, such as desulfurization, denitrification, dust removal, etc., to ensure the effective treatment of industrial flue gas and waste gas.
‌Grain processing, flour mills, food factories‌: used in transportation, drying, cooling, dust and other links to ensure the smooth progress of the food processing process‌.
‌Paint and Coating Industry‌: Used for ventilation, dust removal and waste gas treatment to ensure the safety and health of the working environment.
‌Mining, quarrying, and mineral processing industries‌: used in emissions, exhaust, gas transportation, drying and other links to ensure environmental control and safety during the development of mineral resources‌.
‌Pharmaceutical Industry‌: In the pharmaceutical industry, Roots blowers are used in pharmaceutical processing, chemical reactions and other aspects, such as laboratory ventilation equipment, to ensure the safety and efficiency of the pharmaceutical production process‌.

28 9 月 2024

What can one do with a roots blower

What can one do with a roots blower? roots blower uses

‌Roots blowers‌ are widely used in many industries and fields, mainly including:
‌Sewage treatment‌: In the sewage treatment industry, roots style blowers are widely used in aeration, stirring, mixing and other aspects to ensure the smooth progress of the sewage treatment process.
‌Pneumatic conveying system‌: roots style blowers are used to transport feed, lime powder, monosodium glutamate, soybean skin, silica and other powdery materials, as well as grain suction machines or crane suction vacuum pumps in grain transportation to ensure the effectiveness of materials transmission.
‌Aquaculture‌: In aquaculture, roots style blowers use micropore aeration technology to oxygenate water quality and improve breeding efficiency.They are important equipment in the aquaculture industry.
‌Coal chemical industry‌: In the coal chemical industry, Roots blowers are used in sewage treatment and different processes, playing an important role in improving production efficiency and product quality‌.
‌Dust removal industry‌: Roots blowers are also used in the dust removal industry, such as desulfurization, denitrification, dust removal, etc., to ensure the effective treatment of industrial flue gas and waste gas.
‌Grain processing, flour mills, food factories‌: used in transportation, drying, cooling, dust and other links to ensure the smooth progress of the food processing process‌.
‌Paint and Coating Industry‌: Used for ventilation, dust removal and waste gas treatment to ensure the safety and health of the working environment.
‌Mining, quarrying, and mineral processing industries‌: used in emissions, exhaust, gas transportation, drying and other links to ensure environmental control and safety during the development of mineral resources‌.
‌Pharmaceutical Industry‌: In the pharmaceutical industry, Roots blowers are used in pharmaceutical processing, chemical reactions and other aspects, such as laboratory ventilation equipment, to ensure the safety and efficiency of the pharmaceutical production process‌.

What can one do with a roots blower?

Roots blower pressure range

According to different usage requirements, the pressure of the roots blower fan can be adjusted between 9.8kpa and 200kpa.Within this pressure range, the roots blower fan can work normally and meet various process requirements.Specifically, the pressure range of roots blower fan includes:
‌Low pressure range‌: The pressure is lower than 58.8kpa, including 9.8kpa to 58.8kpa.This type of fan usually uses air cooling, and is mostly designed with a single oil tank.
‌Medium pressure range‌: The pressure is between 58.8kpa and 98kpa.This type of fan requires water cooling, and most of them are designed with double oil tanks.
‌High pressure range‌: When the pressure exceeds 98kpa, especially when it exceeds 140kpa, double-stage pressure boosting technology is required to ensure stable operation of the fan under high pressure.

Roots blower diagram

Roots blower specifications

28 9 月 2024

roots blower company

Roots blower company

At present, Shandong Longgu Heavy Industry Machinery Co., Ltd.'s main products include LGSR three leaf Roots blower, LGSR-V Roots vacuum pump, LGSR-H high-pressure blower series, bipolar series high-pressure, gas pressurized explosion-proof, pneumatic conveying series fans, steam compressors, LGMJ dense series fans, rotary fans, centrifugal fans, etc.
Our company's products are widely used in industries such as sewage treatment, pneumatic conveying, vacuum packaging, grain processing, electricity, petrochemicals, cement, mining, and special gas pressurized conveying.
We have close cooperative relationships with top domestic enterprises such as Sande Group, COFCO Group, and Shanshui Cement. Our company's sales outlets and after-sales service centers are located throughout the country and exported to countries such as Malaysia, India, Kyrgyzstan, Nigeria, etc.

roots blower company

Roots blower specifications

Roots blower uses

‌Roots blowers‌ are widely used in many industries and fields, mainly including:
‌Sewage treatment‌: In the sewage treatment industry, roots style blowers are widely used in aeration, stirring, mixing and other aspects to ensure the smooth progress of the sewage treatment process.
‌Pneumatic conveying system‌: roots style blowers are used to transport feed, lime powder, monosodium glutamate, soybean skin, silica and other powdery materials, as well as grain suction machines or crane suction vacuum pumps in grain transportation to ensure the effectiveness of materials transmission.
‌Aquaculture‌: In aquaculture, roots style blowers use micropore aeration technology to oxygenate water quality and improve breeding efficiency.They are important equipment in the aquaculture industry.
‌Coal chemical industry‌: In the coal chemical industry, Roots blowers are used in sewage treatment and different processes, playing an important role in improving production efficiency and product quality‌.
‌Dust removal industry‌: Roots blowers are also used in the dust removal industry, such as desulfurization, denitrification, dust removal, etc., to ensure the effective treatment of industrial flue gas and waste gas.
‌Grain processing, flour mills, food factories‌: used in transportation, drying, cooling, dust and other links to ensure the smooth progress of the food processing process‌.
‌Paint and Coating Industry‌: Used for ventilation, dust removal and waste gas treatment to ensure the safety and health of the working environment.
‌Mining, quarrying, and mineral processing industries‌: used in emissions, exhaust, gas transportation, drying and other links to ensure environmental control and safety during the development of mineral resources‌.
‌Pharmaceutical Industry‌: In the pharmaceutical industry, Roots blowers are used in pharmaceutical processing, chemical reactions and other aspects, such as laboratory ventilation equipment, to ensure the safety and efficiency of the pharmaceutical production process‌.

28 9 月 2024

作者：lgblower