Notes In Using Filter Press Feeding Pump
Filter press feeding pump, as the name suggests, is used for feeding materials for in the working process of a filter press. Feeding pump is one of the core equipment matched with filter press. The service condition of a filter press is directly related to whether the filter press works well or not.
What we should note is that the flow and the head is changing when the feeding pump is working. So, compared with the common centrifugal pump, characteristic curve of filter press feeding pump is changing all the time rather than remained steady at a certain point.
The working process is divided into three stages:
1, feeding starting stage: as there is no pressure in the filter chamber of filter press, the materials filled with the filter chamber quickly, the feeding pump works in large flow, low head. Then we should consider that the motor cannot exceed current, if any, we should adjust the outlet valve to adjust flow;
2,intermediate stage of feeding: with the liquid in the filter press is gradually discharged, the flow of filter press feeding pump gradually reduce, the pump head gradually increase;
3, holding pressure stage: the liquid quantity is less, pump tend to be small flow, high lift. Then we should observe if the flow rate is less than 30% of the rated flow and pressure is not stable, we should open the bypass valve in time to shunt liquid, to ensure the pump keep running state.