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Anti-leakage hydraulic valve for agricultural machine

An agricultural machinery, anti-leakage technology, applied in mechanical equipment, multi-port valves, valve devices, etc., can solve the problems of worn valve holes, difficult processing of O-rings, and stagnation of reversing.

Inactive Publication Date: 2015-11-18
LIUZHOU YIJIAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing multi-way valves for agricultural machinery do not have a hydraulic lock at port A, and there is no arc-shaped groove on the valve stem, so there will be problems such as reversing sticking and premature wear of the valve hole during use.
In addition, the end of the valve stem is sealed with an O-ring, which is difficult to process and prone to oil leakage.

Method used

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  • Anti-leakage hydraulic valve for agricultural machine
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  • Anti-leakage hydraulic valve for agricultural machine

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Embodiment Construction

[0013] The anti-leakage hydraulic valve for agricultural machinery of the present invention includes a valve body 1, a valve stem 2, a back cover 3 and a bracket 4; a valve cavity 5 is arranged in the valve body 1, and the valve stem 2 is inserted into the valve In the chamber 5 and the valve stem 2 protrudes outside the valve body 1 at the right end, the bracket 4 is sleeved on the valve stem 2 and is located on the right end surface of the valve body 1; The rear cover 3 is located at the left end of the valve body 1; the valve body 1 is provided with a working oil port A6 and a hydraulic lock cavity 7, and the hydraulic lock cavity 7 and the working oil port A6 are connected through a third The oil passage 20 is connected, and the hydraulic lock chamber 7 is connected with the valve chamber 5 through the second oil passage 19; a hydraulic lock 8 is arranged in the hydraulic lock chamber 7; the hydraulic lock 8 includes a single One-way valve core 9, one-way valve sleeve 10, ...

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Abstract

The invention provides an anti-leakage hydraulic valve for an agricultural machine. The valve comprises a valve body, a valve rod, a rear cover and a support. A valve cavity is formed in the valve body. The valve rod is inserted into the valve cavity, and the right end of the valve rod extends out of the valve body. The valve rod is sleeved with the support, and the support is located on the right end face of the valve body. The rear cover is located at the left end of the valve body. The valve body is provided with a work oil port A and a hydraulic lock cavity. The hydraulic lock cavity and the work oil port A are connected through a third oil channel. The hydraulic lock cavity and the valve cavity are connected through a second oil channel. A hydraulic lock is arranged in the hydraulic lock cavity. The problem that lateral force of a one-way valve acts on a valve rod is solved through the anti-leakage hydraulic valve. The portion between the valve rod and the support is sealed through a dustproof ring. The design of dynamic seals and dustproof rings is adopted to the two ends of the valve rod. The problem that oil leaks from the dynamic seals of the valve rod is solved and dust can be prevented through the hydraulic valve.

Description

technical field [0001] The invention relates to an anti-leakage hydraulic valve for agricultural machinery, which belongs to the technical field of machinery. Background technique [0002] The existing multi-way valve for agricultural machinery does not have a hydraulic lock at port A, nor does it have an arc-shaped groove on the valve stem, so problems such as reversing sticking and premature wear of the valve hole may occur during use. In addition, the end of the valve stem is sealed with an O-ring, which is difficult to process and prone to oil leakage. Contents of the invention [0003] The invention provides an anti-leakage hydraulic valve for agricultural machinery to reduce the risk of oil leakage and improve the working reliability of the valve. [0004] An anti-leakage hydraulic valve for agricultural machinery, including a valve body, a valve stem, a back cover and a bracket; a valve cavity is arranged in the valve body, the valve stem is inserted into the valve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K11/065
CPCF16K11/0655
Inventor 杨经勇林建辉
Owner LIUZHOU YIJIAN TECH
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