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Volume control type valve

A technology of volume control and valve control, applied in valve details, valve devices, valve operation/release devices, etc., can solve the problems of expensive upstream controllers, difficult processing, low efficiency, etc., and achieve small leakage and low overall cost , high efficiency effect

Active Publication Date: 2021-08-03
深圳科荣达航空科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional valves include proportional valves, servo valves, relief valves, pressure reducing valves and shut-off valves. Proportional valves, servo valves, relief valves, pressure reducing valves and shut-off valves are all controlled by pressure or mechanically. There are defects such as large leakage, low efficiency, difficult processing, and expensive upstream controllers

Method used

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  • Volume control type valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1 of the present application discloses a volume control valve. see figure 1 , a volume control valve includes a controlled valve 5 fixed on a pipeline 1, an oil storage tank 4 is connected to the controlled valve 5, a control valve body 2 is connected to the oil storage tank 4, and the control valve body 2 is hollow Setting, the control valve body 2 is provided with a control valve spool 3; an input signal is sent to the control valve spool 3, and the input signal can be an electric control signal, such as a pneumatic control signal, a hydraulic control signal, and a solenoid valve control signal, etc., to control The valve core 3 moves in the control valve body 2 to change the volume of oil in the control oil storage tank 4, thereby controlling the opening and closing of the controlled valve 5.

[0042] An output piston 41 is slidably connected in the oil storage tank 4. The output piston 41 divides the oil storage tank 4 into a control oil chamber 42 and a...

Embodiment 2

[0054]Embodiment 2 of the present application discloses a volume control valve, which differs from Embodiment 1 in that, see figure 1 , change the input signal into a displacement signal, and the feedback becomes the control valve body 2, that is, the bottom of the control valve body 2 is closed, and the spool does not have a receiving column 31 and an input spring 32, and the input signal is directly transmitted to the connecting column 1 33, and the feedback One end of the spring 38 away from the connecting column 2 37 is directly fixed on the bottom of the control valve body 2; The two branch pipes 442 communicate with the oil inlet pipe 271 and connect the original oil inlet 27 with the remaining oil pipe 26 .

[0055] The working principle of a volume control valve in Embodiment 2 of the present application is: the displacement signal moves upward, driving the control valve spool 3 to move upward, so that the second oil guide port 22 and the second oil inlet port 27 are c...

Embodiment 3

[0058] Embodiment 3 of the present application discloses a volume control valve, see Figure 8 , which is different from Embodiment 1 in that the pipeline 1 is fixed with a differential pressure valve 6, and the differential pressure valve 6 does not require external energy, and the proportional flow control valve is more efficient than the traditional proportional flow control valve due to the inclusion of self-feedback. The control accuracy is higher, but the overall cost is lower. The differential pressure valve 6 does not require external energy, and relies on the pressure change of the regulated medium to automatically adjust, automatically eliminates the remaining pressure head of the pipe network and the flow change caused by pressure fluctuations, and keeps the pressure difference between the inlet and outlet of the pipeline 1, which helps to stabilize the operation of the system , can achieve high-precision proportional flow control.

[0059] The working principle of...

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Abstract

The invention relates to a volume control type valve. The valve comprises a controlled valve connected to a pipeline, an oil storage tank is connected to the controlled valve, a control valve body is connected to the oil storage tank, a control valve element is arranged in the control valve body, an output piston is connected into the oil storage tank in a sliding mode, the output piston divides the interior of the oil storage tank into a control oil cavity and a reset oil cavity, one end of the output piston extends out of the oil storage tank and is fixed with the controlled valve, a control oil pipe is fixedly arranged on the oil storage tank and is communicated with a control valve rod, a first residual oil port is formed in the control valve body, a residual oil pipe is connected to the valve body and is communicated with the first residual oil port of the control valve body, an oil inlet is formed in the side wall of the control valve body, an oil inlet pipe is fixedly arranged at the oil inlet of the control valve body, and the end, away from the control valve body, of the oil inlet pipe communicates with the reset oil cavity of the oil storage tank. The volume control type valve has the effects of small leakage, high efficiency, small processing difficulty and low cost of an upstream controller.

Description

technical field [0001] The present application relates to the field of valves, in particular to a volume control valve. Background technique [0002] Valve, a device that utilizes a moving part to open, close or partially block one or more openings or passages through which the flow of liquid, air or other air or bulk bulk materials can flow, be blocked or be regulated; also Refers to the spool, the moving part of the device. [0003] The valve is fixedly connected to the pipeline and is used to control the outflow or blockage of fluid in the pipeline. Traditional valves include proportional valves, servo valves, relief valves, pressure reducing valves and shut-off valves. Proportional valves, servo valves, relief valves, pressure reducing valves and shut-off valves are all controlled by pressure or mechanically. There are defects such as large leakage, low efficiency, difficult processing, and expensive upstream controllers. Contents of the invention [0004] In order ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/12
CPCF16K31/12
Inventor 张鹏
Owner 深圳科荣达航空科技有限公司
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