Requirements for filter press pumps
1、Valves, pressure gauges and soft connection anti-vibration joints should be installed at the inlet and outlet of the pump.
2、In the pump installation sequence, the inlet and outlet piping should be installed first, and then the foot bolts should be fixed to prevent tensile stress on the pump and damage to the pump when connecting the piping.
3、The outlet piping is located at a higher distance from the installation position of the filter press pump. The check valve should be installed at the outlet of the pump to prevent the destructive force of high pressure water hammer on the pump at the outlet and the impeller reversal caused by backflow during shutdown.
4、The pump’s import and export piping configuration: in order to reduce the flow resistance of the pipeline and improve the pipeline’s conveying efficiency, the pump’s import and export diameter should be greater than the pump’s import and export diameter.
5、In order to see the operation of the pump more intuitively, a pressure gauge should be installed at the pump outlet, on the straight pipe section between the first valve at the pump outlet and the pump outlet flange.
6、Pump import and export pipes should be set up gravity support system, the pump can not bear the weight of the pipe, otherwise the pump will be easily deformed over time.
7、The setting of the return pipe: under normal working conditions, when the filter press pump reaches a certain pressure and the flow rate is less than 30% of the rated flow rate, the valve on the return pipe must be opened to divert the flow, which not only stabilizes the feed pressure of the filter press, but also ensures that the material inside the pump chamber always remains in a liquid state containing a certain amount of moisture.
8、If it is an automatic control device, it is recommended to install a safety valve on the outlet pipe to automatically open the safety valve back to the flow pipe when the pressure reaches a certain value.