Introduction to pneumatic conveying bin pump
Shandong Juheng Environmental Protection Equipment Co., LtdProvide a detailed explanation of the working principle of the pneumatic conveying control system. Fully automatic operation, the control system adopts the intermittent conveying mode of the bin pump. Each powder conveying pump has one working cycle, and each working cycle is divided intoFour stages.
The epidemic is gradually coming to an end, and various industries are gradually returning to normal. Juheng is working overtime to complete products for customers. Now let's introduce the operating principle of the bin pump
When the manual and automatic switch of the bin pump in the pneumatic conveying system is set to automatic, pressing the automatic start button will open the hanging valve and feeding valve of the bin pump, and the bin pump will start feeding. After the feeding is completed (at this time, the feeding is controlled by the material level and time, and the material levelAt that time, the feeding will end, and a delay time will be set in front of the material level for the feeding to end.
2. The pneumatic conveying system operates by opening the inlet valve for pressurized fluidization. When the material is completely fluidized, the pressure of the bin pump increases.
When the pressure inside the pump reaches a certain value (the set value of the bin pump pressure is set by the pressure digital control bit), the digital controller sends a signal, and the bin powder conveying valve opens to deliver powder. At this time, the pressure of the bin pump or powder conveying pipe is constantly changing.
When the pressure of the pneumatic conveying system chamber pump drops to the lower limit set value (the chamber pump pressure set value is set by the pressure digital controller), the chamber pump enters the delayed purging stage. After a delay of 10 seconds, the inlet and outlet doors of the pneumatic conveying system's bin pump are closed, and the discharge and feeding doors are closedThe door opens, and the pneumatic conveying system's bin pump completes one delivery, and the bin pump enters the feeding state again. When two or more bin pumps connected to the same powder conveying main are in the feeding completion state at the same time, they shall be operated separately according to the priority order of each bin pumptransportation. During operation, if it is found that the bin pump cannot deliver automatically, the bin pump can be switched to manual mode to maintain operation, and then switched to automatic mode after the fault is eliminated.
Centralized manual operation allows process operators to operate pneumatic powder conveying in an emergency state when automatic operation fails. First, turn the manual and automatic switch of each bin pump to manual mode, and then open the feed valve and discharge valve according to the feed valve and discharge valveMaterial valve, close the feed valve and discharge valve according to your estimated time, then open the feed valve for pressurized fluidization. When the pressure reaches the predetermined value, open the powder conveying valve. When the pressure of the bin pump drops to the predetermined value, close the feed valve and powder conveying valve.At this point, a powder conveying process is completed. Reopen the feed valve and exhaust valve to proceed to the next powder conveying process.