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.

pneumatic conveying equipment

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.
pneumatic conveying equipment

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

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.

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    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.
    pneumatic conveying

    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.

    pneumatic conveying

    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.

      Please leave your contact email and requirements so that we can reach you easily

      If you are interested in our products, please fill in your email address and your requirements. Our sales manager will contact you as soon as possible

      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 conveying system

      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.
      pneumatic conveying system

      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

      Pneumatic conveying system Diagram