Hydraulic control directional control valve

A technology of hydraulically controlled reversing valve and pilot reversing valve, which is applied in mining equipment, earthwork drilling, mine roof support, etc. Less source, compact and reasonable structure

Inactive Publication Date: 2013-04-10
乐清市东风煤矿设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional hydraulic control check valve can only control the reversing of a certain liquid flow channel, and its function is relatively single. In use, multiple hydraulic control check valves are required to meet the requirements of use, resulting in high cost, complicated installation and operation. More failure points

Method used

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Embodiment 1

[0017] Figure 1 to Figure 4 A specific embodiment of the invention is shown in which figure 1 It is a structural schematic diagram of the present invention; figure 2 yes figure 1 A-direction view; image 3 yes figure 1 B direction view; Figure 4 yes figure 1 C direction view.

[0018] This embodiment is a hydraulic reversing valve used in a downhole hydraulic support, see Figure 1 to Figure 4 As shown, it includes a valve body 1; two large-flow main control valves 2 and five medium-flow pilot control valves 3 with operating mechanisms 31 are arranged in the valve body; two large-flow main control valves are adjacently arranged side by side, and five The medium flow pilot directional control valves are arranged adjacently and side by side.

[0019] The valve body includes seven sockets 11 provided with internal thread areas; the main control valves with large flows and the pilot reversing valves with medium flow are equipped with cartridge-type spool assemblies 4 wi...

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PUM

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Abstract

The invention discloses a hydraulic control directional control valve which comprises a valve body. Two high-flow main control valves and five intermediate-flow pilot reversing valves with operation mechanisms are arranged in the valve body; the two high-flow main control valves are abutted and are arranged side by side; and the five intermediate-flow pilot reversing valves are abutted and are arranged side by side. According to the invention, two high-flow main control valves and five intermediate-flow pilot reversing valves are integrated into one whole body, so that the hydraulic control directional control valve has a more compact and reasonable structure, more complete functions, a small number of fault sources and stable and reliable performance. When a plurality of products disclosed by the invention are simultaneously used, different control effects can be realized in different pipeline connecting manners, for example, action of a plurality of uprights and jacks can be simultaneously controlled, or actions of balanced extension and retraction of an adjacent frame, extension and retraction of a lateral guard plate, extension and retraction of a protection side and the like are implemented, so that the functional requirements on lifting and descent, displacement, and balanced extension and retraction of a hydraulic bracket, extension and retraction of the lateral guard plate, extension and retraction of the protection side and the like are implemented.

Description

technical field [0001] The invention belongs to the technical field of structural design of a reversing valve, and in particular relates to a hydraulically controlled reversing valve. Background technique [0002] The hydraulic control reversing valve is a type of directional valve. Its function is to change the position of the valve core in the valve body through a certain control method, realize the connection and closure of the flow channel in a certain direction, and change the flow direction of the liquid flow. Control the start, stop or change the direction of motion of the actuator in the hydraulic system. The general technical requirements of the reversing valve are: when the liquid flows through the valve, the pressure loses the drug effect, the internal leakage should be small, and the reversing is stable, fast and reliable. During the working process of the ring valve, the movement of the spool is affected by the simultaneous hydraulic power and clamping force, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D23/16
Inventor 赵雪祥陈其淼赵申诞
Owner 乐清市东风煤矿设备有限公司
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