Automobile water pump bearings are used at the end of the shaft that receives power. The automobile water pump bearing receives the power at one end of the shaft, and the position of different bearings is not the same according to the structure of various equipment. The purpose is to support the mechanical rotating body, reduce the friction coefficient in the process of its movement, and ensure its rotation accuracy. The purpose of lubrication of rolling bearings is to reduce internal friction and wear of bearings and prevent burning and sticking. Extend its service life. Discharge friction heat, cooling, prevent bearing overheating, prevent lubricating oil itself aging. It also has the effect of preventing foreign matter from intruding into the bearing, or preventing rust and corrosion.
Basic structure:
Centrifugal automobile pump is widely used in automobile engine. Its basic structure is composed of automobile water pump shell, connecting disc or pulley, automobile water pump shaft and bearing or shaft bearing, automobile water pump impeller and water seal device and other parts, is the main part of the automobile.
Working principle:
The engine drives the automobile water pump bearing and impeller to rotate through the pulley, and the coolant in the automobile water pump is driven by the impeller to rotate together. Under the action of centrifugal force, the automobile antifreeze circulation automobile water pump to the edge of the automobile water pump shell, while producing a certain pressure, and then outflow from the water channel or water pipe. The center of the impeller is due to the coolant is thrown out and the pressure is reduced, the coolant in the water tank is sucked into the impeller through the water pipe under the action of the pressure difference between the inlet of the water pump and the center of the impeller, and the reciprocating circulation of the coolant is realized.
The bearings supporting the automobile water pump shaft are lubricated with grease, so it is necessary to prevent the coolant from leaking into the grease, resulting in the emulsification of the grease, and also to prevent the leakage of the grease. The sealing measures of automobile pump to prevent leakage are water seal and gasket. The water seal dynamic sealing ring and shaft are installed between the impeller and the bearing through interference fit, and the water seal static sealing seat is pressed tightly on the housing of the automobile water pump, so as to achieve the purpose of sealing the coolant.
The car water pump housing is connected to the engine by a gasket and supports moving parts such as bearings. There is a drain hole on the car pump housing, located between the water seal and the bearing. Once the coolant leaks through the water seal, it can be discharged from the drain hole to prevent the coolant from entering the bearing cavity and damaging bearing lubrication and leading to corrosion of components. If coolant continues to leak after the engine stops, it indicates that the water seal has been damaged.
2023-01-05