A vacuum feeder generates an airflow under vacuum, through which the material being conveyed is instantly transported via a suction hose or tube, moving bulk materials to another container. Since the material remains under vacuum throughout the conveying process, even if leakage occurs, it will not escape into the surrounding environment. Utilizing vacuum suction to transport granular and powdered materials, it is a dust-free, enclosed pipeline conveying device that leverages the pressure difference between the vacuum and the ambient space to create airflow within the pipeline, driving the movement of powdered materials and thereby completing the powder conveying process. The entire conveying process takes place in a *completely sealed state, eliminating dust pollution.
To use the machine, first press the vacuum feeder start button. The machine begins suction, and strong negative pressure draws the material in through the feed inlet. Inside the feeder hopper, the pneumatic controller activates the vacuum pump to create a vacuum in the separation chamber, rapidly drawing air and material from the feed position through the hose or tube and suction inlet into the vacuum conveying equipment, thus achieving material transport. In the separation chamber, the filter cartridge in the filtration chamber separates the air from the material, with the conveyed bulk material retained and collected in the separation chamber. When transporting fine dust, its *efficient cyclone dust collector proves highly effective. When the controller shuts off the vacuum pump, the pressure inside the conveyor equalizes, and the material is transferred from the discharge chamber to the hopper location. During discharge, the controller automatically activates the reverse blow airbag to clean the filter cartridge in the filtration chamber, allowing it to be regenerated for reuse. For conveying viscous materials, auxiliary devices such as piston vibrators can be selected to improve discharge efficiency.
The filtration system separates air from the material. Due to gravity, the material automatically falls and is collected in the hopper. When the hopper is full of material, suction stops automatically, the discharge valve opens, and the material flows out through the discharge port, directly falling into the storage container. The filter cartridge is automatically cleaned by the reverse blow airbag. After discharge is complete, the discharge chamber closes automatically, and the entire conveying process restarts.
Vacuum feeders primarily exhibit the following characteristics:
Simple: Automated control allows suction and discharge times to be set flexibly within 0–30 seconds, making operation straightforward and convenient.
Lightweight: Compact size, light weight, and simple, quick installation.
Sanitary: Enclosed conveying prevents dust leakage and cross-contamination, complies with GMP standards, meets CIP requirements, and can provide sterile-grade equipment.
Quiet: No vibrations and low noise levels.
Clean: Dust-free operation with modular design, eliminating dead corners. Quick and easy disassembly, cleaning, and material changeover.
Economical: One machine can be used in rotation across multiple setups. Energy-efficient, with no warm-up or standby requirements, resulting in low operational and maintenance costs.
Efficient: Conveying capacity can reach up to 6 tons per hour, with horizontal conveying distances up to 40 meters and vertical heights up to 20 meters, effectively addressing the issue of material stratification.
Safe: The entire system can be controlled and operated using only compressed air, without the need for electrical or mechanical energy. No heat is generated during operation, effectively eliminating material static electricity and causing no pollution to the surrounding environment.