Oil pump

An oil pump and oil cavity technology, applied in the field of oil pumps, can solve the problems that the filter can not completely filter the oil debris, affect the operation of the oil pump, and the oil flow is not smooth, so as to improve the pump oil efficiency and oil supply, improve the Long service life, simple and compact structure

Inactive Publication Date: 2016-05-04
CHONGQING YUNHAI MACHINERY MFG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the existing oil pump is working, the oil flow is not smooth, and foreign matter such as wear residues of mechanical parts and connection fragments are often left in the oil chamber, and the filter cannot completely filter the sundries in the oil Foreign matter will wear or scratch the mechanical parts, and excessive accumulation will block the oil pump, affecting the operation of the oil pump

Method used

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Embodiment Construction

[0020] Reference attached figure 1 The embodiment of a kind of engine oil pump of the present invention is described further:

[0021] An oil pump, comprising a pump body 1, a pump cover 2, a pump shaft 3, an inner rotor 4, and an outer rotor 5, the pump cover 2 is arranged on the pump body 1, the pump cover 2 and the pump body 1 to form an oil chamber 6, the pump shaft 3 extends through the pump cover 2 to the inside of the oil chamber 6, the pump shaft 3 is sleeved with the inner rotor 4, the inner rotor 4 is arranged inside the outer rotor 5, the inner rotor 4 and the outer rotor 5 are both arranged inside the oil chamber 6, and the bottom of the left end of the outer rotor 5 is provided with an oil outlet chamber 7, so The lower end and the upper end of the right end of the outer rotor 5 are provided with an oil inlet chamber 8, which adopts a double-sided oil inlet structure, which improves the oil pumping efficiency and oil supply of the oil pump, and the uniformity of ...

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Abstract

The invention provides an oil pump. The oil pump comprises a pump body, a pump cover, a pump shaft, an inner rotor and an outer rotor. The pump cover is arranged on the pump body, and an oil cavity is formed between the pump cover and the pump body; the pump shaft penetrates the pump shaft to extend to the interior of the oil cavity, and is sleeved with the inner rotor; the inner rotor is arranged inside the outer rotor, and the inner rotor and the outer rotor are arranged inside the oil cavity; and an oil outlet cavity is formed in the left end of the bottom of the oil cavity, and an oil inlet cavity is formed in the right end of the bottom of the oil cavity. A filter device is arranged at the bottom of the oil inlet cavity, a suction filter and an oil outlet hole are arranged inside the pump body, the suction filter is communicated with the oil inlet cavity, and the oil outlet hole is connected with the oil outlet cavity. The oil pump is simple and compact in structure, foreign matter in oil can be filtered in time, the oil can flow smoothly, normal work of the oil pump is ensured, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to an oil pump. Background technique [0002] The oil pump consists of a housing, an inner rotor, an outer rotor and a pump cover. The inner rotor is fixed on the rotor shaft with a key or a pin, and is directly or indirectly driven by the crankshaft gear. The eccentric distance between the center of the inner rotor and the outer rotor is e, and the inner rotor drives the outer rotor to rotate in the same direction. Generally, the inner rotor of an oil pump has 4 or more convex teeth, and the number of concave teeth of the outer rotor is one more than the number of convex teeth of the inner rotor, so that the inner and outer rotors rotate in the same direction and not synchronously. The profile shape curve of the rotor is a trochoid. The tooth profile of the rotor is designed so that when the rotor rotates to any angle, the tooth profile of each tooth of the inner and outer rotors...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16N13/20F16N39/06
CPCF16N13/20F16N39/06
Inventor 王帆刘守林何万飞樊建熙
Owner CHONGQING YUNHAI MACHINERY MFG
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