Vacuum feeding machine is mainly composed of vacuum pump (or Roots blower), stainless steel suction nozzle, wear-resistant conveying hose, PE filtering device, compressed air blowback system, pneumatic discharge door and automatic control system for material level and other components. The whole system adopts modular design, compact structure, stable operation, and can meet the powder conveying needs of different industries. Next we look at the working principle of vacuum feeding machine:
Core working principle
When the equipment is running, the vacuum pump forms negative pressure inside the system, which generates strong suction force at the entrance of suction nozzle. Powder materials under the role of air pressure difference, with the airflow through the suction pipe into the vacuum hopper. Inside the hopper, gas-solid separation is realized by means of a high-efficiency filtering device:
- Separation of air and material – the material in the mixed air stream settles due to gravity.
- Automatic material collection – the separated material accumulates at the bottom of the hopper.
- Intelligent unloading – when the material level reaches the set value, the pneumatic valve automatically opens to unload the material.
Automatic cleaning and continuous operation mode
During the unloading process, the system synchronizes the compressed air blowback device:
- Pulsed cleaning of the filter surface
- Prevents screen clogging and maintains stable conveying efficiency.
- Ensures no cross contamination of different batches of material
Intelligent control of continuous conveying
For long-distance, high-volume conveying, the equipment is equipped with a material level sensing system to realize automated operation:
- Intelligent monitoring – real-time detection of the state of the material level in the receiving bin.
- Automatic start and stop – the material level is lower than the set value of automatic replenishment, higher than the threshold stop running
- Unattended – automatic control of the whole process, significantly reducing manual intervention.
Advantages
Vacuum feeding machine realizes efficient material transfer through negative pressure airflow, and its core advantages are reflected in:
- Sealed conveying: eliminate dust spillage, in line with GMP standards.
- Energy saving and high efficiency: Compared with the traditional conveying method, energy saving is more than 30%.
- Intelligent control: PLC system realizes accurate material level management.
- Easy maintenance: modular design facilitates cleaning and maintenance.
Understanding the working principle of the vacuum feeding machine helps to optimize the operation process and improve the maintenance efficiency. For specific material handling solutions, please contact our technical team for professional support.
