How to deal with the failure of the diaphragm of the pump or the blockage of the one-way valve

How to deal with the failure of the diaphragm or the blockage of the one-way valve of the pump manufacturer If the water pump does not load or the amount is insufficient, first check whether the one-way valve is blocked or the outer diaphragm fails. During the inspection, first remove the valve body of the water pump head check valve, start the motor, and adjust the plunger stroke to observe whether the diaphragm movement amplitude changes. If the diaphragm changes with the plunger stroke size, it indicates that the diaphragm is intact . Then inject water into the one-way valve. If the water cannot enter from the inlet or flow out from the outlet, the one-way valve is blocked and needs to be cleaned; if water can flow in from the outlet and flow out of the inlet, the one-way valve is installed reversely. Needs adjustment. Blockage of the one-way valve is quite common because there are too many impurities in the NSI batching process. The solution is to change the pump inlet pipe from the bottom of the batching tank to from the wall of the tank, increase the height of the pipeline, so that the impurities are deposited on the bottom of the tank, and then discharged regularly. The feed check valve attached to the oil tank is damaged. When the metering pump is working normally, the hydraulic chamber is filled with hydraulic oil. When the hydraulic oil in the cavity is insufficient, the hydraulic oil in the attached oil tank will be supplemented by the feed valve. If the valve is damaged, it will cause the diaphragm to stop moving or the operation range is not enough, which will cause the water pump to fail or underflow . There are generally three reasons for the failure of the one-way valve with oil tank feed: the valve core does not fit well with the valve seat; the valve body sealing ring fails; the valve spring fails or its preload is improper. u003c/pu003e
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