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Two-channel kiloliter-level large-flow reversing valve

A large-flow, dual-channel technology, applied in mining equipment, earthwork drilling, pillars/supports, etc., can solve the problem that the reversing valve is not suitable for high-pressure, thousand-up and large-flow conditions, and achieve small hydraulic power and low pressure loss , the effect of reducing flow resistance

Active Publication Date: 2015-06-03
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing reversing valve structure is not suitable for high-pressure, thousand-up and large-flow conditions, the present invention provides a dual-channel, thousand-up, high-flow reversing valve

Method used

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  • Two-channel kiloliter-level large-flow reversing valve
  • Two-channel kiloliter-level large-flow reversing valve

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Embodiment Construction

[0015] Such as figure 1 , a double-channel thousand-upgrade high-flow reversing valve, including a valve body 1, a liquid inlet valve sleeve 2, a valve seat 3, a liquid return valve core 4, a liquid return valve sleeve 5, a liquid intake valve core 6, and a return spring 7 , metal retaining ring 8, sealing ring 9,10, screw plug 11. Inside the valve body, there is a double-sided symmetrical liquid supply main channel P that supplies liquid to the valve core. Symmetrical liquid return channel O, one end of the two-sided liquid return channel communicates through the auxiliary flow channel. Symmetrical dual channels reduce the radial unbalanced force of the spool and solve the problem of reversing hysteresis and deflection wear of large flow reversing valves.

[0016] The valve sleeve includes a liquid inlet valve sleeve 2 and a liquid return valve sleeve 5. The valve core includes a liquid inlet valve core 6 and a liquid return valve core 4. The liquid inlet valve core 6 is i...

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Abstract

The invention belongs to a reversing valve used for controlling a hydraulic system of a hydraulic support, and particularly relates to a two-channel kiloliter-level large-flow reversing valve which solves the problem that a traditional reversing valve structure is not suitable for a high-pressure kiloliter-level large-flow working condition. Two-side symmetrical main liquid supply channels used for supplying liquid to a valve core are arranged in a valve body; one end of one two-side symmetrical main liquid supply channel is communicated with one end of the other two-side symmetrical main liquid supply channel via an auxiliary passageway and is connected with a liquid supply high-pressure pipe; two-side symmetrical liquid return channels are also arranged in the valve body; the left end of a liquid feeding valve core is provided with a hydraulic balance end surface and a hydraulic control end surface; a hydraulic balance oil circuit and a hydraulic control oil circuit are also correspondingly arranged in the valve body and a liquid return valve bush. According to the reversing valve, a phenomenon that a traditional reversing valve causes deflecting force by flow field asymmetry is overcome, a clamping lag phenomenon, an abrasion phenomenon and a failure problem appearing during the returning of the kiloliter-level large-flow reversing valve are avoided, the contact stress of a sealing surface of the valve core and a valve seat is lowered, and the instability of a traditional cone valve is overcome, and pressure loss is lowered.

Description

technical field [0001] The invention belongs to a reversing valve for controlling a hydraulic system of a hydraulic support, in particular to a dual-channel, thousand-upgrade, high-flow reversing valve. Background technique [0002] At present, with the increase of coal seam thickness, the demand for large mining height hydraulic support increases correspondingly, the oil cylinder increases and thickens, and the flow rate of the existing DN12 and DN20 reversing valves is small, which will inevitably bring about the problem of slow movement of the support. High pressure and large flow Hydraulic components have become a major development trend. At present, the user market has a strong demand for the thousand-up reversing valve for brackets, but there is no such product at home and abroad. Existing problems of the existing DN12 and DN20 reversing valves: 1. The inside of the valve body adopts single-channel and one-side liquid supply. The disadvantage is that this structure w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D23/16E21D15/51
Inventor 廖瑶瑶廉自生王登辉袁红兵郭永昌马树新李优
Owner TAIYUAN UNIV OF TECH
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