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Due to the limitation of installation space and performance requirement, automobile engine cooling water pump has the characteristics of small volume, simple manufacture, and is conducive to mass production. The cooling water pump is usually made up of main parts such as pump body, impeller, shaft, bearing, water seal and pulley.

According to the different structure of the engine cylinder block, the pump pressurized water chamber can be integrated on the engine cylinder block, and the impeller can also be separately configured as the core functional components of the pump, its diameter, outlet width, blade structure shape and other parameters and structure design directly determine the performance of the cooling water pump.

There are many kinds of cooling water pump structure, according to the impeller material is different, can be divided into cast iron impeller, stamping impeller and plastic impeller; according to the impeller has no cover plate can be divided into open impeller and closed impeller; according to the impeller blade shape is different, can be divided into straight blade impeller, single curvature blade impeller and space twisted blade impeller. Feilong Jiangli has all the kinds of impellers.

With the development of science and technology, cast iron impellers are still used in the cooling water pumps of trucks, buses and other heavy-duty vehicles and a few self-owned passenger cars. Pressed impellers are mostly used in Japanese passenger cars, plastic impellers are mostly used in European and American advanced countries, and three kinds of impellers are used in domestic self-owned brand cars, but with With the introduction of new technology from abroad, plastic impellers have been used in newly developed machines. When cooling water pumps work, the coolant rotates with the impeller on the one hand, and flows out of the rotating impeller on the other.

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