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A low-impact hydraulic direct-drive high-flow reversing valve

A direct-drive, high-flow technology, applied in the field of water-hydraulic reversing valves, can solve the problems of inability to control high-speed and large-flow of large-diameter cartridge valves, and achieve the effects of improving opening and closing time, improving concealment, and reducing impact.

Active Publication Date: 2019-02-12
BEIJING UNIV OF TECH
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Problems solved by technology

[0004] The invention provides a low-impact water pressure direct-drive high-flow reversing valve, which is used to solve the problem that the existing pilot-operated solenoid valve cannot control the large-diameter cartridge valve to achieve high-speed and large flow, and ensure the control flow of the cartridge valve control chamber. Capable of fast inflow / outflow to ensure quick opening and closing of the cartridge main valve

Method used

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  • A low-impact hydraulic direct-drive high-flow reversing valve

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Embodiment Construction

[0014] The present invention is a low-impact water pressure direct-drive high-flow reversing valve. In the initial state, the main valve core 3 makes the main valve port tightly closed under the action of the main valve return spring 11, and the pilot valve core 4 is controlled by the pilot return spring. Under the action of 12, the pilot valve port is tightly closed. At this time, the inlet and outlet are not connected, so that the valve port can be reliably closed.

[0015] When the reversing valve is opened, the linear drive device 8 first quickly overcomes the spring force and friction force of the pilot return spring 12 and the pressure acting on the pilot spool 4 to the right to pull the pilot spool 4 to move, and at this time the pilot valve port is gradually opened. , during this process, the pressure in the control chamber of the main spool 3 begins to gradually decrease. When the pilot spool 4 moves a certain distance, it contacts the spring baffle 5. At this time, th...

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Abstract

The invention discloses a low-impact hydraulic direct-drive type large-flow reversing valve, and relates to a component for controlling liquid flow direction in a water hydraulic system. According to the reversing valve, a linear driving device with a displacement sensor directly drives a pilot cone valve element and a main valve element of the reversing valve, so that accurate control over the opening degree of a valve port is realized, the impact to the valve port is reduced, and the impact noise is reduced; and meanwhile, a pilot cone valve structure is arranged on the main valve element, so that the sealing requirements between the main valve element and a valve body are reduced, the friction force is reduced, the opening and closing time of the reversing valve is shortened, and the performance requirements for the high speed and large low performance are met. The reversing valve has the advantages of being simple in structure, convenient to control, high in response speed, high in flow capacity, good in sealing performance, free of jam and the like, is suitable for controlling liquid flow direction of medium and high pressure water media (light seawater, sea water based liquid and the like), and is particularly suitable for being used in a high-speed and high-flow water hydraulic transmission system.

Description

technical field [0001] The invention belongs to the field of fluid transmission and control, and relates to a component for controlling the direction of liquid flow in a water hydraulic system. It is a water hydraulic reversing valve, which is suitable for liquid flow in medium-high pressure and large-flow water media (fresh sea water, sea water base, etc.) For direction control occasions, it is especially suitable for use in high-speed and large-flow water hydraulic transmission systems. Background technique [0002] In addition to the advantages of traditional hydraulic transmission such as compact structure, large power-to-mass ratio, and good stability, water hydraulic transmission technology also has the advantages of no pollution, good flame retardancy, and wide source of media. It is widely used in food processing, marine resource exploration and development. , naval equipment and other fields have unique advantages, and the application prospect is very broad. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/38F16K47/02
CPCF16K31/38F16K47/023
Inventor 聂松林刘向阳张京秀
Owner BEIJING UNIV OF TECH
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