10 月 2024 - 第3页共5页 - roots blower_centrifugal fan_pneumatic conveying-Shandong Longgu Heavy Industry Machinery Co., Ltd.

centrifugal fans a price

What are the three types of centrifugal fans?

Centrifugal fans are divided into three types: static pressure centrifugal fans, dynamic pressure centrifugal fans and diagonal flow centrifugal fans.
1.Static pressure centrifugal fan
Static pressure centrifugal fans are suitable for occasions requiring larger air volume and lower wind pressure, such as ventilation and air conditioning and refrigeration. Their transmission pressure (static pressure) generally does not exceed 2000Pa. Static pressure centrifugal fans can be divided into forward curved plate centrifugal fans, back curved plate centrifugal fans, right angle centrifugal fans and medium pressure centrifugal fans.The front curved plate centrifugal fan has a set of aluminum curved plates in front of the impeller, which allows the gas entering the impeller to flow to the blades, improving energy utilization and achieving higher static pressure and efficiency. The rear curved plate centrifugal fan has a set of aluminum curved plates behind the impeller to better utilize gas energy and improve efficiency. The right-angle centrifugal fan has a wind direction curve of 90 degrees and has high static pressure. It is suitable for air conditioning supply and exhaust systems. Medium-pressure centrifugal fans are suitable for larger gas flows and pressures, and can meet higher system efficiency.
2.Dynamic pressure centrifugal fan
The transmission pressure (static pressure) of dynamic pressure centrifugal fans is usually above 2000Pa, and is suitable for occasions that require higher wind pressure or require long-distance gas transportation, such as industrial production lines, processes, smelting, etc. Dynamic pressure centrifugal fans can be divided into two types: single suction type and double suction type. The single-suction dynamic pressure centrifugal fan has a shorter suction section and is suitable for transporting gases with less dust, such as fresh air supply and return systems. The double-suction dynamic pressure centrifugal fan has a longer suction section and is suitable for conveying dust-containing gas or where both ends need to be connected to pipes.
3.Oblique flow centrifugal fan
The oblique flow centrifugal fan is a new type of centrifugal fan, suitable for large-scale air supply or exhaust situations. Its air volume can reach 600000m³/h and its static pressure can reach 750Pa. The advantages of this type of fan are high efficiency, low noise, large air volume, small and lightweight, and are generally widely used in industrial environments such as metallurgical industry, buildings, and petrochemical industries.

centrifugal fans a price

Which type of centrifugal fan is the most efficient?

Impeller centrifugal fans have stronger wind power. Impeller centrifugal fans are divided into two types: forward curved blade type and rear curved blade type. The front curved blade centrifugal fan is suitable for transporting high-speed airflow (i.e. small wind resistance), which can improve operating efficiency; the rear curved blade centrifugal fan is suitable for transporting high pressure, high temperature, high humidity, high viscosity, high dust gas and corrosion sexual gas because its structure is stronger.

12 10 月 2024

Best centrifugal fans a

best centrifugal fans a

How to judge whether a centrifugal fan is good or bad
1.Whether the centrifugal fan performance meets the standard static pressure exhaust volume and meets the standard performance can achieve the air supply volume required by the specific system;
2.How high is the efficiency of the centrifugal fan? High efficiency of the fan saves electricity. High efficiency of the fan saves electricity;
3.How high is the vibration value at the position of the rolling bearing? Fan bearings with high vibration values are easily damaged, while bearings with low vibration values have a long service life;
4.What is the operating noise? Noise is air pollution, harms working mood, and also consumes energy;
5.Have you considered the convenience of maintenance? Centrifugal fans are equipment that require regular maintenance, and the oil supply holes, exhaust holes, inspection ports, and rolling bearings should be easily disassembled;
6.Generally speaking, you can know the advantages and disadvantages of a centrifugal fan by looking at its appearance. If you keep improving the position, centrifugal fans are generally very good.

Which type of centrifugal fan is the most efficient?

Impeller centrifugal fans have stronger wind power. Impeller centrifugal fans are divided into two types: forward curved blade type and rear curved blade type.
The front curved blade centrifugal fan is suitable for transporting high-speed airflow (i.e. small wind resistance), which can improve operating efficiency; the rear curved blade centrifugal fan is suitable for transporting high pressure, high temperature, high humidity, high viscosity, high dust gas and corrosion sexual gas because its structure is stronger.

best centrifugal fans a

What are the three types of centrifugal fans?

Centrifugal fans are divided into three types: static pressure centrifugal fans, dynamic pressure centrifugal fans and diagonal flow centrifugal fans.
1.Static pressure centrifugal fan
Static pressure centrifugal fans are suitable for occasions requiring larger air volume and lower wind pressure, such as ventilation and air conditioning and refrigeration. Their transmission pressure (static pressure) generally does not exceed 2000Pa. Static pressure centrifugal fans can be divided into forward curved plate centrifugal fans, back curved plate centrifugal fans, right angle centrifugal fans and medium pressure centrifugal fans.The front curved plate centrifugal fan has a set of aluminum curved plates in front of the impeller, which allows the gas entering the impeller to flow to the blades, improving energy utilization and achieving higher static pressure and efficiency. The rear curved plate centrifugal fan has a set of aluminum curved plates behind the impeller to better utilize gas energy and improve efficiency. The right-angle centrifugal fan has a wind direction curve of 90 degrees and has high static pressure. It is suitable for air conditioning supply and exhaust systems. Medium-pressure centrifugal fans are suitable for larger gas flows and pressures, and can meet higher system efficiency.
2.Dynamic pressure centrifugal fan
The transmission pressure (static pressure) of dynamic pressure centrifugal fans is usually above 2000Pa, and is suitable for occasions that require higher wind pressure or require long-distance gas transportation, such as industrial production lines, processes, smelting, etc. Dynamic pressure centrifugal fans can be divided into two types: single suction type and double suction type. The single-suction dynamic pressure centrifugal fan has a shorter suction section and is suitable for transporting gases with less dust, such as fresh air supply and return systems. The double-suction dynamic pressure centrifugal fan has a longer suction section and is suitable for conveying dust-containing gas or where both ends need to be connected to pipes.
3.Oblique flow centrifugal fan
The oblique flow centrifugal fan is a new type of centrifugal fan, suitable for large-scale air supply or exhaust situations. Its air volume can reach 600000m³/h and its static pressure can reach 750Pa. The advantages of this type of fan are high efficiency, low noise, large air volume, small and lightweight, and are generally widely used in industrial environments such as metallurgical industry, buildings, and petrochemical industries.

12 10 月 2024

centrifugal blower fan

Centrifugal blower fan

The centrifugal blower is a machine that relies on input mechanical energy to increase the gas pressure and discharge the gas. It is a driven fluid machine.

Working principle of centrifugal fan

The centrifugal fan is based on the principle of converting kinetic energy into potential energy. It uses a high-speed rotating impeller to accelerate the gas, then decelerates and changes the flow direction, so that the kinetic energy is converted into potential energy (pressure).In a single-stage centrifugal fan, the gas enters the impeller from the axial direction, changes to the radial direction when the gas flows through the impeller, and then enters the diffuser.
In a diffuser, the gas changes direction of flow causing deceleration, which converts kinetic energy into pressure energy. The pressure increase mainly occurs in the impeller and secondarily during the pressure expansion process. In multi-stage centrifugal fans, a reflux is used to direct the airflow into the next impeller, creating higher pressure.

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

1.Structural differences
A blower is usually a rotating cylindrical structure consisting of a set of impellers and a casing. An impeller usually consists of a set of curved blades that are fixed to a shaft and create airflow as they rotate. The casing is usually a closed cylindrical structure, and the gap between it and the impeller is very small so that the airflow does not leak.
The structure of a centrifugal fan is slightly different from a blower. It usually consists of a rotating impeller and a casing. An impeller is usually composed of multiple curved blades that are fixed on a shaft and generate airflow when rotating. The housing is usually a conical structure, and its shape can be adjusted according to different application requirements. Unlike a blower, the gap between the impeller and the casing of a centrifugal fan is relatively large, allowing the airflow to pass through more smoothly.
2.Differences in working principles
A blower works by creating airflow through a rotating impeller, which is then pushed toward the housing, creating a high-pressure area. The air flows from the high-pressure area to the low-pressure area, forming an air flow circulation system. A blower works like a pump, pushing gas to the outside through a rotating impeller.
The working principle of a centrifugal fan is also to generate airflow through a rotating impeller, but it is different from a blower in that the airflow it generates is pushed to the outside by centrifugal force. As the impeller spins, it pushes the gas toward the ends of the blades, which then pushes the gas toward the outside. The centrifugal force makes the air flow smoothly through the centrifugal fan.
3.Application differences
Due to the structure and working principle of the blower, it is usually used in applications requiring high-pressure air flow, such as air blowing, gas delivery and drying. The blower can generate high-pressure air flow to make the gas flow quickly in the pipeline, thereby realizing various industrial production processes.
Centrifugal fans have a wider range of applications. Due to its structure and working principle, centrifugal fans can be used in a variety of different applications such as air conditioning systems, gas turbines, boiler ventilation, industrial waste gas treatment, etc.

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 flow of air 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 at 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.

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

1.Definition and working principle
A centrifugal fan is a machine that uses the rotation of an impeller to generate centrifugal force to suck gas in from the air inlet and discharge the gas. An ordinary fan is a machine that generates pressure in the air through the rotation of the blades, thereby transporting gas.
2.Performance characteristics
The performance curve of centrifugal fans is relatively flat and they can provide a certain amount of air volume even at low flow rates, while ordinary fans are less efficient at low flow rates. Centrifugal fans perform better when handling large air volumes, while ordinary fans are more suitable for small air volumes and high-pressure working environments.
3.Structural features
Centrifugal fans usually consist of a casing, impeller, bearings, motor, etc., and have a relatively complex structure. Ordinary fans are relatively simple. Centrifugal fans are less noisy because their working principle makes them produce less noise.
4.Application fields
Centrifugal fans are usually used in ventilation systems, air handling systems, etc., especially in environments that require large air volumes and are sensitive to noise. Ordinary fans are more commonly used in small equipment or environments that require high pressure.
5.Maintenance
The maintenance of centrifugal fans is relatively complicated, requiring regular replacement of bearings and cleaning of the casing, while the maintenance of ordinary fans is relatively simple. After long-term operation, both fans need to be cleaned to ensure their working effect and extend their service life.
6.Cost and efficiency
The price and maintenance costs of centrifugal fans are usually higher than ordinary fans, but due to their performance characteristics and operational stability, they may increase efficiency and reduce operating costs in some situations. When selecting a fan, the actual application needs and budget should be considered to select the most suitable model.

12 10 月 2024

What is rotary valve

Rotary valve, also known as unloading valve and star unloader, is a mechanical device that changes the valve from the open position to the closed position by rotating a rotating component such as a rotating baffle.
A rotary valve is a device that achieves fluid control by rotating a valve. In a rotary valve, the opening and closing, regulation, distribution, etc. of the fluid in the pipeline are controlled through the rotation of the valve. Therefore, the rotary valve is often called a revolving door. Rotary valves usually consist of a valve body, a valve shaft and a valve sealing ring.

Rotary valve working principle

The working principle of the rotary valve is mainly based on its design structure and working mechanism. The rotary valve usually consists of a rotor blade.
When the material in the upper bin falls by its own weight and fills the space of the rotor blade, as the blade rotates, the material is taken to the lower outlet and discharged, thereby achieving continuous feeding and unloading. function of the material.
This design is particularly important in pneumatic conveying systems because it can not only supply materials, but also lock the air flow.
Through the low-speed rotation of the rotor and the extremely small gap between the rotor and the inner cavity of the housing, it effectively prevents the reverse flow of the air flow, thereby maintaining The air pressure in the system is stable and the materials are discharged normally.
The self-cleaning rotary valve is improved on the basis of ordinary rotary valves. By adding a cleaning blade (scraper), it can automatically remove the residual material on the rotor while dosing the material quantitatively.
It is especially suitable for sticky and easy-to-stick valves. block of special materials. Its working principle involves the coordinated work of two upper and lower rotors: the upper rotor is equipped with blades for quantitative feeding, while the lower rotor is equipped with a cleaning blade, which uses the difference in rotational speed of the upper and lower rotors to achieve self-cleaning while quantitatively feeding.
The working principle of the eccentric rotary valve is to use an eccentrically rotating sector-shaped ball valve to open and close the valve through the engagement and separation of the eccentric ball crown and the valve seat. When opening, the ball core separates from the valve seat; when closing, the ball core gradually contacts the valve seat, exerting a compressing force on the valve seat.

Rotary valve diagram

What is a rotary valve used for?

Specific uses for rotary valves include:
‌Unloading‌: In the negative pressure pneumatic conveying system, the rotary valve is installed under the cyclone separator and dust collector as an unloader to unload materials.
‌Air lock: Through low-speed rotation and a very small gap between the rotor and the inner cavity of the housing, the rotary valve effectively prevents the reverse flow of air and keeps the air pressure in the system stable.
Feeding‌: In the pneumatic conveying system, the rotary valve continuously supplies material to ensure the normal discharge of materials‌.
‌Prevent clogging‌: The rotary valve can transport materials evenly and continuously, prevent gas and solid materials from accumulating in the pipeline, and avoid blockage and leakage‌.

11 10 月 2024

Rotary valve feeder

The rotary feeder is also called a rotary valve, a star feeder, and an air lock.
The usual structure of a rotary feeder is that a rotor with several blades rotates in a cylindrical casing. Materials fall from the upper hopper and are filled.
In the space between the blades, it is discharged as the blades rotate to the lower part.
There is a pressure equalizing exhaust port on the side of the body, which can discharge the high-pressure gas brought by the rotation of the impeller, reducing the phenomenon of gas pushing and conducive to the smooth flow of materials.
The drop is one of the main components of the pressure-feeding and suction-feeding pneumatic conveying systems, and the rotary feeder type. It can feed materials into the clinker pipe evenly and continuously, and in the separation and dust collection part of the system, it It also has the functions of unloader and air lock.

Rotary feeder working principle

The working principle of the rotary feeder is that the driving device drives the spiral scraper or the turntable to rotate.
The material is pushed and frictioned by the spiral scraper or centrifugal force, and is continuously transported or transported upward along the movement direction of the spiral scraper or turntable.
It is thrown away from the turntable and finally discharged from the discharge port or falls freely in the air to realize the transportation and diffusion of materials.
Rotary feeder, also known as rotary feeder, is a commonly used material conveying equipment and is widely used in mining, building materials, chemical industry, metallurgy and other industries.
It uses a rotating spiral scraper or turntable to transport materials from the bottom of the container or the turntable to the upper discharge port or throw them away from the turntable to achieve continuous feeding and transportation of materials.
This kind of equipment consists of spiral scrapers, bearings, transmission devices, etc. Its working principle is simply to use friction and pushing to transport materials along the movement direction of the spiral blades or turntable through the rotating spiral blades or turntable. .
Specifically, when the drive device is started, it drives the spiral scraper or turntable to rotate. Material falls from the upper hopper and fills the space in the spiral scraper or turntable. As it rotates, the material is pushed and rubbed, and is continuously transported upward along the movement direction of the spiral scraper or turntable.
When the material reaches the edge of the turntable, it will be discharged from the discharge port, or it will fall freely in the air to realize the transportation and diffusion of the material. This design not only ensures the uniform transportation of materials, but also reduces the phenomenon of gas ejection, which is conducive to the smooth falling of materials.
In addition, the rotary feeder also has the characteristics of simple structure and easy maintenance. It can be customized according to different production needs, so it plays an important role in the production line.

Rotary feeder diagram

11 10 月 2024

Diesel Roots Blower

The diesel engine provides power and transmits the power to the Roots blower through the transmission device to drive it to operate.
There are two intermeshing rotors inside the Roots blower. During operation, these two rotors continuously change the gas volume to achieve the suction, compression and discharge of gas.
Due to its simple structure and smooth operation, diesel Roots blower has become the first choice in many industrial situations.

Roots blower diagram

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.

Roots blower specifications

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 company

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.

11 10 月 2024

rotary valve

What is the rotary valve?

A rotary valve is a mechanical device that controls fluid regulation by rotating parts such as a rotating baffle to change the valve from the open position to the closed position. ‌‌
The working principle of the rotary valve is based on the rotor with several blades rotating in the cylindrical casing. The material falls from the upper hopper, fills the space between the blades, and is discharged as the blades rotate.
This kind of equipment usually consists of a rotor, a casing, a seal, a motor, a reducer, etc., and can achieve uniform and continuous material transportation.
Rotary valves are widely used in industry, especially in pneumatic conveying systems. They can evenly and continuously supply materials to the feeding pipe. They are suitable for positive or negative pressure pneumatic conveying systems, pulse dust removal equipment, precision feeding and other occasions. .
The rotary valve has the characteristics of compact structure, beautiful appearance, good air locking performance, stable operation, uniform blanking, light weight and energy saving. It can play the role of feeding and locking the air flow, effectively preventing the reverse flow of the air flow and ensuring the safety of the system. Stable air pressure and normal discharge of materials.

Rotary valve working principle

‌The working principle of the rotary valve‌ is mainly based on its design structure and working mechanism. The rotary valves usually consists of a rotor blade. When the material in the upper bin falls by its own weight and fills the space of the rotor blade, as the blade rotates, the material is taken to the lower outlet and discharged, thereby achieving continuous feeding and unloading. function of the material. This design is particularly important in pneumatic conveying systems because it can not only supply materials, but also lock the air flow. Through the low-speed rotation of the rotor and the extremely small gap between the rotor and the inner cavity of the housing, it effectively prevents the reverse flow of the air flow, thereby maintaining The air pressure in the system is stable and the materials are discharged normally.
The self-cleaning rotary valve is improved on the basis of ordinary rotary valves. By adding a cleaning blade (scraper), it can automatically remove the residual material on the rotor while dosing the material quantitatively. It is especially suitable for sticky and easy-to-stick valves. block of special materials. Its working principle involves the coordinated work of two upper and lower rotors: the upper rotor is equipped with blades for quantitative feeding, while the lower rotor is equipped with a cleaning blade, which uses the difference in rotational speed of the upper and lower rotors to achieve self-cleaning while quantitatively feeding. .
The working principle of the eccentric rotary valve is to use an eccentrically rotating sector-shaped ball valve to open and close the valve through the engagement and separation of the eccentric ball crown and the valve seat. When opening, the ball core separates from the valve seat; when closing, the ball core gradually contacts the valve seat, exerting a compressing force on the valve seat.
The working principle of the rotary valves involves many aspects such as material filling, rotary conveying, air flow control, etc. Different types of rotary valves (such as self-cleaning rotary valves, eccentric rotary valves) have different implementation methods, but they are all designed to improve the quality of materials. Conveying efficiency and system stability.

Rotary valve diagram

What is the function of a rotary control valve?

The main functions of the rotary valve include unloading and air locking. ‌‌
The rotary valve plays an important role in the negative pressure pneumatic conveying system, and its main functions can be summarized as two points: unloading and air locking. The discharge performance is directly related to the air locking performance of the rotary valve, which is particularly important in negative pressure pneumatic conveying systems.
The rotary valve is usually installed below the cyclone separator, dust collector or cyclone dust collector and is used as an unloader to ensure the smooth operation of the system and the effective transportation of materials. In addition, the rotary valve also has functions such as cut-off, diversion, pressure stabilization, and flow diversion, which further expands its diversity and flexibility in industrial applications.

10 10 月 2024

Rotary feeder

The usual structure of a rotary feeder is that a rotor with several blades rotates in a cylindrical casing.
Materials fall from the upper hopper and are filled. In the space between the blades, it is discharged as the blades rotate to the lower part.
There is a pressure equalizing exhaust port on the side of the body, which can discharge the high-pressure gas brought by the rotation of the impeller, reducing the phenomenon of gas pushing and conducive to the smooth flow of materials.
The drop is one of the main components of the pressure-feeding and suction-feeding pneumatic conveying systems, and the rotary feeder type.
It can feed materials into the clinker pipe evenly and continuously, and in the separation and dust collection part of the system, it It also has the functions of unloader and air lock.

Rotary feeder working principle

The working principle of the rotary feeder is that the driving device drives the spiral scraper or turntable to rotate.
The material is pushed and frictioned by the spiral scraper or centrifugal force, and is continuously transported upward or thrown away along the movement direction of the spiral scraper or turntable.
From the turntable, it is finally discharged from the discharge port or falls freely in the air to realize the transportation and diffusion of materials. ‌‌

Rotary feeder diagram

What is the purpose of a rotary feeder?

The main uses of rotary feeders include the following aspects:
‌Mining, building materials, chemical industry, metallurgy and other industries‌: In these industries, rotary feeders are used to continuously transport granular, powdery and block materials to ensure the stable operation of the production line‌.
‌Dust removal system‌: Rotary feeder is often used as an important part of the dust removal system, especially suitable for conveying dust and small particle materials‌.
‌Electronic industry, machinery industry and pharmaceutical industry‌: In these industries, rotary feeders are used for material supply in manufacturing and assembly processes, such as the production of electronic components, mechanical equipment and medical equipment.

10 10 月 2024

types of centrifugal fan

Types of centrifugal fan

‌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. These types are suitable for a variety of different work environments and needs depending on their structure and purpose.
‌Single-suction centrifugal fan‌: Also known as front-suction centrifugal fan, it is suitable for transporting general gases and has a small air volume range.
‌Double-suction centrifugal fan‌: Also known as rear-suction centrifugal fan, it can be used under conditions of high pressure, large air volume, and small starting torque.
‌High-pressure centrifugal fan‌: 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.

Centrifugal fan working principle

The core working principle of a centrifugal fan is to use a high-speed rotating impeller to accelerate the gas, and then convert the kinetic energy of the gas into pressure energy (potential energy) by decelerating and changing the flow direction. ‌
This process mainly occurs in ‌single-stage centrifugal fans. The gas enters the impeller from the axial direction, changes to the radial direction when flowing through the impeller, and then enters the diffuser. In a diffuser, a change in the direction of gas flow causes deceleration, which converts the kinetic energy of the gas into pressure energy.
The increase in pressure occurs mainly in the impeller, followed by the expansion process. In multi-stage centrifugal fans, a refluxer is used to direct the airflow into the next impeller, thereby generating higher pressure. ‌

types of centrifugal fan

Centrifugal fan application

‌Industrial Manufacturing‌: Centrifugal fans are used in many industrial environments, such as ‌steel metallurgy, ‌chemical industry, ‌mining, etc. In these industries, fans are usually used to strengthen air supply, exhaust, refrigeration and hot air systems. Especially in harsh environments such as high temperature, corrosion, dust, etc., centrifugal fans play an irreplaceable role.
‌‌Environmental protection equipment‌: Centrifugal fans are also widely used in environmental protection equipment, such as ‌sewage treatment, ‌exhaust gas purification, etc. At the same time, centrifugal fans also play an important role in dust removal equipment, incineration equipment and advanced physical noise reduction equipment.
‌Construction equipment‌: In the construction field, centrifugal fans are used in air conditioning, ventilation, hot air and other fields. Through the air supply and exhaust system, they realize the circulation and flow of air and promote the convection and ventilation of indoor air.
‌Temperature control‌: Centrifugal fans can change the ambient temperature by blowing air, so they have important uses in heating, ventilation, air conditioning, drying and other temperature regulation equipment.
‌Air purification‌: In special environments such as laboratories, operating rooms and other places that have strict requirements on air quality, centrifugal fans can be used for air filtration and purification.
‌Agricultural cultivation‌: In agricultural production, centrifugal fans are used to provide a stable air environment for greenhouse plant growth, animal feeding, etc.
‌Transportation equipment‌: In transportation equipment such as trains and ships, centrifugal fans are also used for air circulation.
‌‌Food Processing‌: In the food processing industry, centrifugal fans are also very commonly used, such as drying equipment, cooling equipment and other food processing technology equipment.

Which type of centrifugal fan is the most efficient?

Forward curved plate centrifugal fans have the highest efficiency. ‌Forward curved plate centrifugal fans have high efficiency and small size, and are suitable for smaller air volumes and wind pressures. Therefore, among all types of centrifugal fans, forward curved plate centrifugal fans have the highest efficiency‌.
The high efficiency of the forward curved plate centrifugal fan is mainly due to its design features. Its impeller rotates in the same direction as the gas flow, which can maximize the use of kinetic energy and reduce energy loss. In addition, the compact structure of the forward curved plate centrifugal fan makes the air flow smoother when passing through the impeller, further improving efficiency.

9 10 月 2024

what are centrifugal fans

What are centrifugal fans

‌Centrifugal fan is a mechanical device that relies on mechanical energy to increase gas pressure and transport it out. It is widely used in various fields such as energy, environment, and aviation. It is one of the main energy-consuming equipment in industrial and agricultural production. ‌
The centrifugal fan is a type of impeller machinery. Its working principle is to form a negative pressure inside the fan through the rotation of the impeller, sucking in external air and expelling the fan through the impeller flow channel and volute. The centrifugal fan is mainly composed of casing, impeller, shaft, collector, exhaust port, bearing box, coupling, pulley and base.

what are centrifugal fans

Centrifugal fan working principle

The core working principle of a centrifugal fan is to use a high-speed rotating impeller to accelerate the gas, and then convert the kinetic energy of the gas into pressure energy (potential energy) by decelerating and changing the flow direction. ‌This process mainly occurs in ‌single-stage centrifugal fans. The gas enters the impeller from the axial direction, changes to the radial direction when flowing through the impeller, and then enters the diffuser. In a diffuser, a change in the direction of gas flow causes deceleration, which converts the kinetic energy of the gas into pressure energy. The increase in pressure occurs mainly in the impeller, followed by the expansion process. In multi-stage centrifugal fans, a refluxer is used to direct the airflow into the next impeller, thereby generating higher pressure. ‌
The workflow of the centrifugal fan includes the following key steps:
‌Gas entry‌: The airflow enters the blade space from the axial direction of the fan.
‌Acceleration‌: Driven by the impeller, the gas rotates with the impeller and increases energy under the action of inertia.
‌Centrifugal force action‌: The gas obtains centrifugal force driven by the impeller and leaves the impeller in the radial direction.
‌Diffusion and deceleration‌: When gas enters the diffuser, the change in flow direction causes deceleration. This deceleration converts the kinetic energy of the gas into pressure energy.
‌Exhaust gas‌: After passing through the diffuser, the gas is discharged from the fan and has a certain pressure.
The structure of a centrifugal fan includes a casing, a main shaft, an impeller and other components. The impeller is the main component that generates wind pressure and transmits energy. The casing is used to introduce and discharge gas, and at the same time convert part of the kinetic energy of the gas into pressure energy.

what are centrifugal fans

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. These types are suitable for a variety of different work environments and needs, depending on their structure and purpose.
Single-suction centrifugal fan‌: Also known as front-suction centrifugal fan, it is suitable for transporting general gases and has a small air volume range.
‌Double-suction centrifugal fan‌: Also known as rear-suction centrifugal fan, it can be used under conditions of high pressure, large air volume, and small starting torque.
‌High-pressure centrifugal fan‌: 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.

what are centrifugal fans

Centrifugal fan application

‌Industrial Manufacturing‌: Centrifugal fans are used in many industrial environments, such as ‌steel metallurgy, ‌chemical industry, ‌mining, etc. In these industries, fans are usually used to strengthen air supply, exhaust, refrigeration and hot air systems. Especially in harsh environments such as high temperature, corrosion, dust, etc., centrifugal fans play an irreplaceable role.
‌‌Environmental protection equipment‌: Centrifugal fans are also widely used in environmental protection equipment, such as ‌sewage treatment, ‌exhaust gas purification, etc. At the same time, centrifugal fans also play an important role in dust removal equipment, incineration equipment and advanced physical noise reduction equipment.
‌Construction equipment‌: In the construction field, centrifugal fans are used in air conditioning, ventilation, hot air and other fields. Through the air supply and exhaust system, they realize the circulation and flow of air and promote the convection and ventilation of indoor air.
‌Temperature control‌: Centrifugal fans can change the ambient temperature by blowing air, so they have important uses in heating, ventilation, air conditioning, drying and other temperature regulation equipment.
‌Air purification‌: In special environments such as laboratories, operating rooms and other places that have strict requirements on air quality, centrifugal fans can be used for air filtration and purification.
‌Agricultural cultivation‌: In agricultural production, centrifugal fans are used to provide a stable air environment for greenhouse plant growth, animal feeding, etc.
‌Transportation equipment‌: In transportation equipment such as trains and ships, centrifugal fans are also used for air circulation.
‌‌Food Processing‌: In the food processing industry, centrifugal fans are also very commonly used, such as drying equipment, cooling equipment and other food processing technology equipment.

9 10 月 2024

月度归档：10 月 2024