A vacuum feeder is a dust-free, enclosed pipeline conveying device that uses vacuum suction to transport granular and powdered materials. By leveraging the pressure difference between the vacuum and the surrounding environment, it creates airflow within the pipeline to drive the movement of powdered materials, thereby completing the material conveying process.

Vacuum conveying is a pipeline-based enclosed transportation method. This approach eliminates dust pollution in the environment, improves working conditions, reduces contamination of materials by the surroundings or personnel, and enhances cleanliness. Due to its pipeline-based design, it occupies minimal space, enabling the transport of powders in confined areas and contributing to an aesthetically organized workspace. It is particularly unrestricted by distance limitations. Additionally, vacuum conveying reduces manual labor intensity, improves work efficiency, and is a preferred method for transporting certain powdered materials.

How Vacuum Feeders Work:

The vacuum pump generates a vacuum in the separation chamber of the vacuum conveying equipment, drawing material from the feed inlet through the suction hose and nozzle.

Inside the filtration compartment of the separation chamber, air and material are separated, with the material collected in the hopper. A cyclone separator prevents fine powder from entering the filter, thereby improving the filter’s efficiency.

When the hopper is full of material, the vacuum pump automatically shuts off, and the pressure within the conveying equipment equalizes. The discharge valve opens, allowing the material to flow out through the discharge port and directly fall into the storage container.

During discharge, the filtration compartment is automatically cleaned by a reverse blow airbag. A specially designed vibrator can assist in discharging to improve the efficiency of conveying viscous materials.

The discharge chamber closes, and the entire conveying process restarts.

Vacuum feeders are widely used for transporting powdered materials in various industries, including:

Power plants for conveying fly ash

Cement plants for conveying cement

Aluminum oxide plants for conveying alumina powder

Pneumatic conveying of raw material powder

Kaolin conveying

Limestone powder injection conveying

Mineral powder conveying

Antimony powder conveying

Wood chip conveying

Rice husk conveying

Straw pellet conveying

Food-grade material conveying, and other powdered material transport applications.