Electric hydraulic reversing valve core

A technology of hydraulic reversing valve and valve core, applied in the field of hydraulic reversing valve, can solve the problems of inability to realize automatic operation, large frictional resistance of valve core, large impact force of valve core, etc., achieve small friction force, reduce movement impact, smooth work effect

Pending Publication Date: 2018-04-06
LIMING HYDRAULIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing hydraulic reversing valves control the hydraulic valve spool to move linearly in the valve hole through manual, motorized or electromagnetic valves, so as to achieve the purpose of changing the direction of hydraulic oil and the opening of the oil port to control the flow of the hydraulic valve; There are disadvantages such as inconvenient operation, automatic operation cannot be realized, and the valve core suffers from large frictional resistance when reversing, and the valve core has a large impact force under the action of external force, etc.

Method used

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  • Electric hydraulic reversing valve core
  • Electric hydraulic reversing valve core
  • Electric hydraulic reversing valve core

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] By improving the structure of the hydraulic valve, the present invention realizes the automatic operation of the hydraulic reversing valve, overcomes the shortcomings of the original hydraulic valve, such as large frictional resistance and large movement impact when reversing, and at the same time ensures that the electrohydraulic reversing valve Both ends of the spool are in the non-pressure zone, and the bearings are rotationally lubricated. Therefore...

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PUM

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Abstract

The invention discloses a spool of an electrohydraulic reversing valve, which comprises a connection structure, a plurality of buffer structures located at one end of the connection structure, and a spool working section arranged between the buffer structures; the connection structure includes a spool screw, a spool screw It is located at one end of the spool of the electro-hydraulic reversing valve; the buffer structure includes a pressure buffer section 1 and a pressure buffer section 2; By improving the original structure of the hydraulic reversing valve, the invention has the advantages of automatic operation, small frictional resistance and small movement impact, and has broad development and application prospects.

Description

technical field [0001] The invention relates to the technical field of hydraulic reversing valves, in particular to an electrohydraulic reversing valve spool. Background technique [0002] The hydraulic reversing valve is the key core component in the industrial control hydraulic system. It controls the direction and flow of the hydraulic actuator cylinder and the forward and reverse of the hydraulic motor. [0003] Most of the existing hydraulic reversing valves control the hydraulic valve spool to move linearly in the valve hole through manual, motorized or electromagnetic valves, so as to achieve the purpose of changing the direction of hydraulic oil and the opening of the oil port to control the flow of the hydraulic valve; There are disadvantages such as inconvenient operation, automatic operation cannot be realized, and the valve core suffers from large frictional resistance when reversing, and the valve core has a large impact force under the action of external force....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K11/07F16K31/04F16K31/50F16K3/314F16K3/36F16K47/00F15B13/02
CPCF16K11/0716F15B13/02F16K3/314F16K3/36F16K31/047F16K31/50F16K47/00
Inventor 梁富春叶萍
Owner LIMING HYDRAULIC CO LTD
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