The drill water pipeline pump dredger should avoid pipeline bearing support, gravity imposed on the pump body. Pipeline installation should be extended from the pump inlet and outlet flange, and immediately do a good job supporting positioning. The mud pump must work to protect the high pressure water injection packing chamber seal assembly. The main pump in normal operation shall not be shut down the high pressure water pump. Drilling pumping sand water pressure should be greater than the pump working pressure of sediment. Packing chamber assembly in the absence of high pressure water to protect the case will soon wear.
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