Impurity filtering device of diesel oil delivery pump

Abstract

The invention relates to the technical field of oil delivery pumps. The invention further discloses an impurity filtering device of a diesel oil delivery pump. The impurity filtering device comprisesan upper pump cover and a lower pump cover, a diaphragm is fixedly connected between the upper pump cover and the lower pump cover, a spring seat is fixedly connected to the bottom of the lower pump cover, a large spring is arranged at the top of the spring seat, a pump core seat is movably connected to the top of the large spring, an upper connecting lug and a lower connecting lug are fixedly connected to two sides of the pump core seat respectively, a groove is formed in the top of the pump core seat, and a spring groove is formed in the bottom of the groove. According to the invention, an end filter screen is arranged on the inner wall of an oil inlet pipe, diesel oil flowing into the oil delivery pump is filtered, the end filter screen is designed to be wavy to enable the surface areaof the end filter screen to be large, under the condition of the same oil inlet amount, the mesh number of the filter screens can be increased, the filtering effect is improved, the filtering effect of the device is better, the service life of an engine is prolonged, and the large spring can provide required pipeline pressure for a system.

Description

technical field [0001] The invention relates to the technical field of oil delivery pumps, in particular to an impurity filter device for diesel oil delivery pumps. Background technique [0002] The role of the fuel delivery pump is to ensure that the diesel oil circulates in the low-pressure oil circuit, and to supply a sufficient amount of fuel with a certain pressure to the fuel injection pump. The fuel delivery volume should be 3-4 times the maximum fuel injection volume under full load. Oil pumps are divided into gear oil pumps, diaphragm oil pumps, plunger oil pumps, pipeline oil pumps and so on. [0003] However, during the use of the existing oil delivery pump, there is a deficiency in the cleanliness of the diesel oil flowing through the oil delivery pump, which has a certain impact on the performance of the engine, thereby reducing the service life of the engine. Contents of the invention [0004] (1) Solved technical problems [0005] Aiming at the deficiencie...

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a diesel oil delivery pump impurity filtering device, which has the advantages of good filtering effect and solves the problem of insufficient cleanliness affecting engine performance

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