The piston pump is operated through a fixed seal, a piston before and after. The piston pump depends on the piston to move in, making the volume of the pump cavity changing and completing the suction and discharge of the liquid. The sealing device of plunger pump in the plunger cylinder, through a lubrication. The first thing to do is to use plungers to move inside and outside the pump cylinder, so that the plunger and pump wall will change volume, repeat suction and drain liquid and increase its pressure. Plunger pump usually has better initial application characteristics, its advantages are high additional pressure, compact structure, high efficiency and convenient flow regulation, but its disadvantage is that it can not run too high pressure and short life.

The water capacity of the pump depends on the speed of the pump, and the pump must make the same amount of water come into and out. The water flow parameter of piston pump is invariable, that is, no matter when the flow of water radiating out of the equipment is constant, the flow rate is constant. Therefore, if the nozzle or high pressure pipe presents an infarction, it will cause the pressure pump to be too large. As a result, installation of pressure relief valves and the like must be installed in the equipment system.

High pressure cleaning machine is the easiest to attack. The reason is that the pump and pump are usually caused by abrasion of components or components, such as nozzle seals. In general the pump into the water pump is caused by lack of early use of one of the most important reasons for failure stage, in general, are due to water pipe diameter is too small or the lack of water, and then lead to not enough water into the pump, the pump cavitation cavitation phenomenon formation, the gas inclusion in the water attack small the explosion overpressure damage, the piston surface wear.

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