The Working Principle of the Engine Water Pump

The working principle of the engine water pump: 

Through the belt pulley to drive the pump bearing and the impeller to rotate, the cooling liquid in the pump is driven by the impeller to rotate together, and is thrown to the edge of the pump shell under the effect of Centrifugal Force, at the same time generating certain pressure, and then it comes out of a drain or a pipe. The cooling liquid in the water tank is sucked into the impeller through the water pipe under the pressure difference between the inlet of the pump and the center of the impeller to realize the reciprocating circulation of the cooling liquid.

It is worth noting that the bearing bearing supporting the pump shaft is lubricated with grease, so to prevent the leakage of coolant to grease caused by emulsion, but also to prevent the leakage of coolant. Water pump to prevent leakage of sealing measures have water seal and gasket. The water seal dynamic seal ring and shaft are installed between the impeller and the bearing through interference fit. The water seal static seal seat is close to the shell of the water pump so as to seal the coolant.