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E-mail
fy@tjfeiyun.com
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Phone
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No. 3 Ruike Road, Jinnan District, Tianjin City
Tianjin Feiyun Powder Equipment Co., Ltd
The working principle and wide application of pneumatic vacuum feeding machine
Date: 2025-09-30Read: 4
1、 Working principle of pneumatic vacuum feeder
The pneumatic vacuum feeder generates a negative pressure environment by driving a vacuum generator with compressed air, and uses the pressure difference to adsorb powder or granular materials, achieving closed conveying. The core workflow is divided into four stages:
1. Vacuum generation: Compressed air enters the vacuum generator (Venturi principle), forming negative pressure (usually -0.4 to -0.6 MPa) in the conveying pipeline;
2. Material inhalation: The air pressure at the suction nozzle is lower than the outside, and the material mixes with air to form a material airflow, which enters the hopper through a hose;
3. Air material separation: Air is discharged through a filter, and the material falls into the silo due to gravity. The backwash device automatically cleans the filter element;
4. Circulating discharge: After the material is full, the valve opens to discharge, the vacuum pump restarts and enters the next cycle, and the level gauge can intelligently control the start and stop.
2、 Structural composition and core components
1. Power module: Pneumatic vacuum generator (non electric design, explosion-proof safety);
2. Conveyor system: suction nozzle, hose, stainless steel hopper and filter (optional polyester film/PE/316L stainless steel);
3. Control unit: pneumatic valve, blowback airbag, material level sensor (supporting timing/quantitative/linkage control).
3、 Widely applicable fields
1. Pharmaceutical and Food: Compliant with cleanliness standards, used for powder filling and mixed material transportation;
2. Chemical and New Energy: Processing materials that are prone to dust and adsorption (such as lithium battery raw materials);
3. Plastics and building materials: long-distance transportation of modified plastics, cement additives, etc.
4、 Performance advantages
1. Efficient and environmentally friendly: Fully enclosed conveying, eliminating dust pollution, with a single conveying distance of up to 20 meters;
2. Flexible and safe: The non electric design is suitable for explosion-proof environments, and the lightweight structure (50-120kg) is easy to move;
3. Intelligent compatibility: supports continuous, negative pressure and other variants to adapt to different production capacity requirements.
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