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Double-seal pump cover

A double-seal and pump cover technology is applied to pump components, variable displacement pump components, components of pumping devices for elastic fluids, etc. It can solve problems such as short service life and poor safety, and achieve improved safety and The effect of service life

Inactive Publication Date: 2013-09-04
HEFEI XINYUAN HYDRAULIC CASTING
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a double-sealed pump cover to solve the technical problems of short service life and poor safety of the sealing structure of the existing hydraulic pump

Method used

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Embodiment Construction

[0014] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0015] Please refer to figure 1 , figure 2 ,

[0016] A double-seal pump cover, including a pump cover body 1 provided with a shaft hole 2 and an oil hole 3, a primary sealing ring 41 is provided on the periphery of the shaft hole 2 and the oil hole 3 of the pump cover body 1, and a primary sealing ring 41 is provided on the outside There is a secondary sealing ring 42, which can improve the sealing safety of the pump through two seals. The primary sealing ring 41 and the secondary sealing ring 42 are respectively installed in the primary sealing groove and the secondary sealing groove. The first-level sealing groove is an isosceles trapezoidal or right-angled trapezoidal groove whose upper bottom is larger than the lower bottom. The sealing ...

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Abstract

The invention provides a double-seal pump cover, aims to solve the technical problems that an existing hydraulic pump sealing structure is short in service life and poor in safety, and relates to the technical field of hydraulic pump cover sealing. The double-seal pump cover comprises a pump cover body provided with a shaft hole and an oil hole. The double-seal pump cover is characterized in that a primary sealing ring is arranged on the periphery of the shaft hole and the oil hole of the pump cover body, and a secondary sealing ring is arranged on the outer side of the primary sealing ring. Compared with the prior art, the double-seal pump cover has the advantages that the safety of a hydraulic pump cover sealing structure is enhanced, and the service life of the hydraulic pump cover sealing structure is prolonged; the sealing rings are prevented from aging or loosing sealing performance after being dismounted and mounted repeatedly through a double-layer sealing structure; besides, the sealing effect is improved through optimization of the structure of a sealing groove and the sealing rings.

Description

technical field [0001] The invention relates to a pump cover of a hydraulic pump, in particular to a double-sealed pump cover. Background technique [0002] The hydraulic pump is a machine that relies on the change of the closed working volume to realize the suction and pressure of liquid, thereby converting mechanical energy into hydraulic energy. It is the power element of the hydraulic system, and its function is to convert the mechanical energy of the prime mover into the pressure energy of the liquid. There are many factors that affect the service life of hydraulic pumps. In addition to the design and manufacturing factors of the pump itself, it is also related to the selection of elements related to the use of the pump (such as couplings, oil filters, etc.), and the operation during the test run. [0003] At present, the most common failures of hydraulic pumps are: the aging of the sealing ring or the failure of the sealing structure during maintenance and disassembly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B53/16
Inventor 李光友
Owner HEFEI XINYUAN HYDRAULIC CASTING
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