ash pumpalso known asWarehouse pump、pneumatic conveying pump、Pneumatic conveying bin pumpPlays an important role in pneumatic conveying. A bin pump is a pressure vessel that can withstand a certain pressure and temperature. The upper end of the bin pump is a pneumatic feed valve, and there is an upward pipeline inside that is connected to the pneumatic discharge valve and ash conveying pipeline. The bin pump operates in an automatic control mode and can be divided into four stages: 1. feeding stage, 2. pressure fluidization stage, 3. conveying stage, and 4. blowing stage.

The specific details of the warehouse pump are shown in the figure:

The following are the specific steps of the four stages:

1. Feed stage

The feed valve is open. The intake valve and discharge valve are in the closed state. The interior of the bin pump is connected to the electrostatic precipitator ash hopper, and fly ash enters the bin pump. When the ash level in the bin pump is high enough to contact the level gauge probe, the level gauge generates a level full signal, which enters the program controller through the on-site control unit, and the system automatically closes the feed valve.

2. Pressure fluidization stage

The intake valve is open. The feed valve, discharge valve, and secondary purge valve are closed, and compressed air enters the bin pump through the fluidized disc to fluidized fly ash. When the pressure inside the bin pump rises to a certain set value, the discharge valve opens to end pressurized fluidization.

3. Transportation stage

The intake valve and discharge valve are open. The feed valve and secondary purge valve are closed, and the ash gas mixture enters the conveying pipeline. At this time, the pressure inside the pump remains stable. When the fly ash transportation in the silo pump is completed, the positive force in the pipeline decreases. When the pressure inside the warehouse pump drops to the lower limit pressure value, the conveying state ends.

4. Blowing stage

The secondary purge valve is open and the feed valve is closed. The intake valve and discharge valve remain open, and compressed air is used to clean the residual ash in the bin pump and pipeline. At this time, there is no fly ash in the bin pump, and the fly ash in the pipeline gradually decreases, finally almost in an air flow state. The system resistance decreases, and the pressure of the bin pump drops to a stable value. After a certain period of time, the blowing ends. The intake valve, discharge valve, and secondary air valve are closed, the feed valve is opened, and the bin pump returns to the feeding state.

Thus it can be seen,ash pumpThe importance of bin pumps in pneumatic conveying systems lies in their high energy efficiency, high material to gas ratio, low material flow rate, strong regulation ability, unique detoxification method, easy to solve matching settings, low energy consumption coefficient, and high degree of automation. Juheng has many years of conveying experience in pneumatic conveying. If you have such needs, Juheng can let experts design pneumatic conveying solutions for you free of charge,