pneumatic conveying system working principle

Pneumatic conveying system working principle

• The working principle of the pneumatic conveying system is to use the flow kinetic energy generated by high-speed flowing air to suspend particles, and then transport the granules from one place to another under the push of the air flow.
• Specifically, the pneumatic conveying system uses compressed air or other gases as the conveying medium to form a gas-solid two-phase flow in a closed pipeline, so that the material moves in the pipeline along the direction of the air flow.
• This conveying method can be used for horizontal, vertical or inclined conveying, and can simultaneously perform heating, cooling, drying and other operations of materials during the conveying process.

Types of pneumatic conveying system

• Pneumatic conveying systems can be divided according to different classification standards, mainly including the following types:
• ‌Divided by conveying pressure‌: positive pressure, negative pressure, combined positive and negative pressure systems.
• ‌Divided by transportation form‌: ‌Dilute phase, dense phase, semi-dense phase and other systems.
• ‌Divided by type‌: ‌suction type, ‌pressure type, ‌mixing type and ‌circulation type.
• According to the air flow speed in the conveying pipeline, it is divided into: suspended flow and plug flow.
• ‌Divided by sending device‌: ‌mechanical type and ‌barrel pressure type.
• ‌Divided according to the configuration of the transportation pipe: single pipe transportation and ‌double pipe transportation.
• ‌Divided according to the gas source supply method: continuous gas supply and pulse gas supply.

Pneumatic conveying system diagram

Pneumatic conveying system manufacturer

• 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.

How does pneumatic conveying work?

• The working principle of pneumatic conveying is to use the flow kinetic energy generated by high-speed flowing air to suspend particles, and then transport the granules from one place to another under the push of the air flow. Pneumatic conveying can be divided into two forms: dilute phase conveying and dense phase conveying.
• In dilute phase transportation, the solid content is lower than 1-10kg/m³, the operating gas speed is high (about 18~30m/s), and the transportation distance is generally within 300m. Mature equipment such as material seal pumps are simple to operate, have no mechanical rotating parts, have low delivery pressure and are maintenance-free‌1. In dense phase transportation, when the solid content is 10-30kg/m³ or the solid-to-gas ratio is greater than 25, the operating air speed is low, and higher air pressure is used for conveying. The conveying distance can reach more than 500m, but the equipment has many valves and the conveying pressure is high. , all pipes must be made of wear-resistant materials.
• Pneumatic conveyor is a device that uses gas flow to drive materials for transportation. It can be divided into two forms: pressure transportation and vacuum transportation. Pressure conveying is to compress air or other gases into high-pressure gas through equipment such as compressors, and then transport it through pipelines to the materials that need to be transported. The materials will flow along the pipelines with the air flow and be transported to the target location. Vacuum conveying is a process in which negative pressure is established in the conveying pipeline to form a vacuum environment, and the material is extracted from one point to another by adsorbing or grabbing it.