language
English
ChineseExplanation of the structure and working principle of automobile water pump:
working principle:
1. The engine drives the bearing and impeller of the automobile water pump to rotate through the pulley, and the coolant in the automobile water pump is driven by the impeller to rotate together. pressure and then flow out of the sewer or water pipe.
2. At the center of the impeller, the pressure is reduced due to the cooling liquid being thrown out. The cooling liquid 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 automobile Car Air Pumps and the center of the impeller to realize the reciprocating circulation of the cooling liquid. The bearings supporting the water pump shaft of the automobile are lubricated with grease, so it is necessary to prevent the coolant from leaking into the grease and cause the grease to emulsify, and also to prevent the leakage of the grease.
3. The sealing measures for automobile water pumps to prevent leakage include water seals and gaskets. The water seal dynamic seal ring is installed between the impeller and the bearing through an interference fit, and the water seal static seal seat is tightly press-fitted on the casing 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 through a gasket, and supports moving parts such as bearings.
4. There is also a drain hole on the car water pump housing, which is located between the water seal and the bearing. Once the coolant leaks through the water seal, it can be leaked from the drain hole to prevent the coolant from entering the bearing cavity and destroying the bearing lubrication and causing the components to rust. If the coolant still leaks after the engine is stopped, the water seal is damaged.
5. Generally driven by the crankshaft of the engine through the V-belt. The transmission belt is surrounded between the crankshaft pulley and the water pump pulley, and the water pump shaft rotates as soon as the crankshaft rotates, and the water pump shaft drives the impeller to rotate, thereby converting mechanical energy into hydraulic energy. The impeller is the core of the work of the water pump. The movement of the impeller itself is very simple, and it just rotates with the shaft.
6. However, due to the action of the blades, the movement of the liquid in the impeller is very complicated; on the one hand, it is involved in the movement with the rotation of the impeller, and on the other hand, it is continuously thrown out from the rotating impeller under the driving of the blade, that is, the relative movement of the impeller. sports. Therefore, the outer diameter of the impeller, the height and angle of the impeller blades, and the gap between the impeller and the pump casing directly affect the performance of the pump.
Tel:86-574-62678766
E-mail:bzheng22@163.com
