Dustproof safety valve

A safety valve, dust-proof technology, applied in the field of hydraulic pumps, can solve problems such as affecting the steering assist function of the pump and being easy to block.

Inactive Publication Date: 2013-03-27
DALIAN HYDRAULIC COMPONENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem that the small hole on the hydraulic pump is easy to block and thus affect the power steering function of the pump, the present invention provides a dust-proof safety valve that prevents the small hole on the hydraulic pump from being blocked.

Method used

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  • Dustproof safety valve

Examples

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Embodiment Construction

[0008] The structure of the dust-proof safety valve of the present invention is as follows: figure 1 As shown, the sleeve 1 and the cone valve seat 4 are fitted with interference, the fine filter 2 and the coarse filter 3 are fixed on the end face of the sleeve 1 and put into the inside of the cone valve seat 4 together with the sleeve 1, the fine filter 2 and the coarse filter The center of the net 3 is located on the center line of the hole 5 on the cone valve seat 4 . The oil before entering the small hole 5 with a diameter of 1 mm is firstly filtered through the filter. The first layer of fine filter prevents the 1 mm hole from being blocked by particles. The second layer of coarse filter mainly plays a supporting role to ensure that the filter is under oil pressure It cannot deform and fall off under the action of the steering pump, so as to ensure that the small hole will not be blocked, and the reliability of the steering pump application can be guaranteed.

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Abstract

The invention relates to a dustproof safety valve, wherein a sleeve is in interference assembly with a conical valve seat, a precision filter net and a coarse filter net are fixed on the end surface of the sleeve and are arranged inside the conical valve seat together with the sleeve, and the center of the precision filter net and the center of the coarse filter net are positioned on a central line of a hole in the conical valve seat. According to the dustproof safety valve, two layers of filter nets are arranged at the front end of a small hole which is 1mm in diameter, wherein the first layer of precision filter net is used for preventing the hole which is 1mm in diameter from being blocked by particulate matters, and the second layer of coarse filter net mainly plays a support role so as to ensure that the filter net cannot deform and fall off under the action of oil pressure.

Description

technical field [0001] The invention relates to the technical field of hydraulic pumps, in particular to a device for preventing small holes on a hydraulic pump from being blocked. Background technique [0002] With the continuous application of hydraulic technology in the automotive industry. There are more and more automobile steering systems with hydraulic power assist. Due to the performance requirements, a small hole with a diameter of 1 mm is designed and processed on the pump structure. Because the oil is polluted, the small hole is easy to be blocked, and the filter is easy to deform or fall off, making the steering The loss of the power assist function reduces the reliability of the power steering system and brings inconvenience to the operator. Contents of the invention [0003] In order to overcome the problem that the small holes on the hydraulic pump are easily blocked and thus affect the power steering function of the pump, the invention provides a dust-proo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B53/10F04B53/20
Inventor 仲照航张宇飞王奇
Owner DALIAN HYDRAULIC COMPONENT
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