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A fast multi-directional multifunctional hydraulic control valve

A hydraulic control valve, multi-functional technology, applied in the field of hydraulic valves, can solve the problems of slow movement, long response time of hydraulic control valves, etc., and achieve the effects of rapid response, rapid reciprocating action control, and sensitive action

Inactive Publication Date: 2016-06-08
NINGBO JIANGDONG CHENGCHUANG IND PROD DESIGN CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the above electromagnetic pilot valve, since the pilot valve and the main valve have the same spool structure, opening the main valve requires a certain stroke of the spool or piston movement, so the response time of the hydraulic control valve is longer and the action is slower

Method used

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  • A fast multi-directional multifunctional hydraulic control valve
  • A fast multi-directional multifunctional hydraulic control valve
  • A fast multi-directional multifunctional hydraulic control valve

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Embodiment Construction

[0035] The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

[0036] The hydraulic control valve in the present invention drives the valve core to move up and down by controlling the fluid pressure difference between the upper and lower ends of the valve core to complete the opening and closing actions.

[0037] see figure 1 As shown, it is a schematic cross-sectional structure diagram of the fast multi-directional multi-functional hydraulic control valve of the present invention. The hydraulic control valve of the present invention includes a valve body 1, a valve sleeve 2, a valve core 3, and a valve seat 5, wherein the valve sleeve 2 is arranged on Inside the valve body 1 , the valve core 3 is arranged in the valve sleeve 2 , and the valve seat 5 is fixed on the upper end of the valve body 1 .

[0038] A main oil inlet 11 is provided at the bottom of the valve bo...

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Abstract

The invention relates to a fast multi-directional multifunctional hydraulic control valve, which includes a valve core, a valve body and a valve seat, wherein the valve core is arranged in the inner cavity of the valve body, and the valve seat is fixed on the The upper end of the body; the valve core is provided with a differential hole, which causes a pressure difference between the upper and lower ends of the valve core; the valve seat is provided with a control hole, and the differential hole, the upper cavity of the valve core and the control hole are connected; When the hydraulic valve is opened, the hydraulic oil in the main oil circuit forms an oil circuit through the differential hole, the upper cavity of the spool and the control hole; when the control hole is closed, the spool is on the upper part of the spool The cavity moves under the action of high-pressure hydraulic oil to close the hydraulic control valve. The hydraulic control valve of the present invention is provided with a differential hole, which is quick in response and sensitive, and can also realize pressure maintenance.

Description

technical field [0001] The invention relates to the field of hydraulic valves, in particular to a fast multi-directional multifunctional hydraulic control valve. Background technique [0002] In the prior art, the electro-hydraulic control reversing valve is composed of a main valve and an electromagnetic pilot valve. The electromagnetic pilot valve is the pilot stage of the reversing main valve. Through electromagnetic operation or manual operation, the pilot valve and the main valve are connected together. In the main oil circuit, the opening pressure of the pilot valve and the main valve are different, or the opening sequence is different. However, the pilot valve and the main valve often have the same or similar structure. When opening the main valve, the pilot valve must be opened first. After the spool or piston of the pilot valve completes the corresponding moving stroke, it reaches the preset opening pressure. The core is turned on. [0003] Chinese patent "An Elec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B13/02
Inventor 涂雪龙
Owner NINGBO JIANGDONG CHENGCHUANG IND PROD DESIGN CO LTD
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