Hydraulic control valve
A technology for hydraulic control valves and bonnets, which is applied to control valves, valve devices, and valve details. It can solve the problems of water hammer, affecting the sealing performance of the main valve, and the sealing gasket is prone to aging, so as to improve the service life.
Pending Publication Date: 2022-08-02
TIANJIN CARLS VALVE CO LTD
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Problems solved by technology
[0003] The main valve mostly adopts a piston valve disc, and a gasket is installed between the valve disc and the valve seat. The gasket located at the extruded part of the valve disc and the valve seat is prone to aging under repeated high pressure, thus affecting the overall sealing performance of the main valve.
In addition, if the closing speed of the main valve is too fast, water hammer will occur
Method used
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Embodiment Construction
[0023] like figure 1 As shown, a hydraulic control valve includes a valve body 1, a valve seat 2, a valve cover 3, a valve disc 8, a hydraulic cylinder 4, a piston 5, and a push rod 7. The valve body 1 includes an inlet cavity 101 and an outlet cavity 102. , a valve seat 2 is arranged at the connection between the inlet cavity 101 and the outlet cavity 102, a valve cover 3 is arranged at the top of the outlet cavity 102, and a through hole is arranged on the valve cover 3, and the push rod 7 passes through the through hole of the valve cover 3 and is opposite to the valve cover 3. Sliding and sealing connection, a hydraulic cylinder 4 is arranged on the top of the valve cover 3, and a piston 5 is arranged in the hydraulic cylinder 4. The piston 5 divides the hydraulic cylinder into a lower chamber 401 and an upper chamber 402, and the lower chamber 401 passes through a pipeline. 601 is communicated with the inlet chamber 101, the upper chamber 402 is communicated with the outl...
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The hydraulic control valve comprises a valve body, a valve seat, a valve cover, a valve clack, a hydraulic cylinder, a piston and a push rod, the valve body comprises an inlet cavity and an outlet cavity, a through hole is formed in the valve cover, the hydraulic cylinder is arranged at the top of the valve cover, the piston is arranged in the hydraulic cylinder and divides the hydraulic cylinder into a lower cavity and an upper cavity, the lower cavity is communicated with the inlet cavity through a first pipeline, and the upper cavity is communicated with the outlet cavity through a second pipeline. The upper cavity is communicated with the outlet cavity through a second pipeline, a tail end stroke buffering device is arranged in the inlet cavity, when the pressure of the inlet cavity is suddenly reduced and media in the pipeline reversely flow, the media in the outlet cavity enter the upper cavity through the second pipeline, the pressure in the upper cavity is gradually increased, the piston moves downwards, and the valve clack is slowly closed. Medium reverse flow is mainly controlled, meanwhile, destructive water hammers generated by sudden medium reverse flow are eliminated, in addition, the valve clack rotates to a set angle every time the valve clack is opened to be closed, and the service life of a sealing gasket can be prolonged.
Description
technical field [0001] The present invention relates to a hydraulic control valve. Background technique [0002] Hydraulic control valve is a general term for a series of multi-purpose control and safety valves. The hydraulic control valve can control pressure, flow, liquid level, etc. only by relying on the energy of the circulating medium. According to the different design requirements and usage requirements in the water supply system, dozens of valves can also be evolved. Pilot-operated pressure reducing valves, pressure relief safety valves, remote-controlled float valves, etc. are often used. In simple terms, the hydraulic control valve is composed of a main valve and different pilot valve systems. By assembling different pilot valve systems, the hydraulic control valve will have different functions. [0003] The main valve mostly adopts a piston type valve disc, and a sealing gasket is arranged between the valve disc and the valve seat. The sealing gasket located at...
Claims
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IPC IPC(8): F16K15/06F16K31/122F16K47/02
CPCF16K31/122F16K15/065F16K47/023
Inventor 侯万化朱志强
Owner TIANJIN CARLS VALVE CO LTD