Mud pump refers to a mechanical device that delivers flushing fluid such as mud or water to the borehole during the drilling process. Mud pumps are an important component of drilling equipment.
In commonly used positive circulation drilling, the surface flushing medium - clear water, mud, or polymer flushing fluid - is sent directly to the bottom of the drill bit through a high-pressure hose, faucet, and drill pipe center hole under a certain pressure, in order to cool the drill bit, remove the cut rock debris, and transport it to the surface.
The commonly used mud pump is a piston or plunger type, which is driven by a power machine to rotate the crankshaft of the pump. The crankshaft then drives the piston or plunger through the crosshead to perform reciprocating motion in the pump cylinder. Under the alternating action of the suction and discharge valves, the purpose of pressing and circulating flushing fluid is achieved.