Warehouse pump pneumatic conveying is a sealed pressure vessel, in which materials are loaded into the container and mixed with compressed air, transported through a conveying pipe to the discharge point. According to the design principles and structural characteristics of the bin pump, it is divided into different forms of bin pumps. Now, several commonly used forms of bin pumps are introduced.

1、 Vortex type bin pump

It is designed based on the principle of vortex airflow, hence it is called a vortex chamber pump.

The operating principle is as follows: After the material is loaded into the bin pump, compressed air is sprayed out at high speed through dozens of nozzles tangent to the inner wall of the bin pump cone through the air duct, forming a strong vortex airflow that rotates the animal material and reaches a high mixing ratio before entering the conveying pipe, achieving high concentration conveying. The key component of the vortex type chamber pump structure is the nozzle form of the cone part of the chamber pump. Two types are commonly used: one is to mill holes on the cone of the chamber pump with a milling cutter to ensure tangency with the inner wall; The second is that the nozzle is directly screwed onto the inner wall of the cone, and the angle between the nozzle's jet direction and the horizontal increases from top to bottom, usually5°-45°The number of nozzles is12—48One or more. When the bin pump is vertical, there is a feed valve at the top(Or bell jar valve)The upper part is equipped with a safety valve, an exhaust valve, and a level control meter for automatic loading control. The volume of the warehouse pump exceeds0.4mWhen necessary, maintenance manholes should be installed. Add a vortex air supply device at the end of the cow horn bend for conveying viscous materials. Its function is to adjust the mixing ratio at the outlet and prevent sticking at the bend.

Characteristics of vortex chamber pump:

1)Due to the strong mixing of vortex airflow and materials in the warehouse pump, a high concentration dense phase transportation is formed, and the air consumption per ton of material is relatively small. After measurement, the air consumption per ton of material under standard conditions is:11—13m3(The conveying distance is40mtime)。

2)It can achieve long-distance and complex transportation. The conveying distance for viscous materials such as casting sand can reach165mHorizontal conveying distance of wet silica sand500mRaise the height34mThe above.

3)The material is transported at low speed in the pipeline, resulting in minimal wear on the conveying pipe.

4)The entire system includes automatic control of feeding, electronic weighing, and conveying processes, with two options: manual and automatic. The vortex type bin pump has formed a product series in China