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Cut-off-type valve with pilot valve

A pilot valve, valve technology, applied in the valve operation/release device, lift valve, valve details, etc., can solve the problems of large valve resistance, pressure difference, difficulty in opening, etc., and achieve small opening resistance, simple structure and low cost. Effect

Active Publication Date: 2014-02-19
YANCHENG XINGHUO VALVE IND MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nowadays, many valves, such as cut-off valves used in water supply pipelines, due to the pressure difference between the two sides of the valve in the closed state, the resistance is very large when the valve is opened, which makes it difficult to open.

Method used

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  • Cut-off-type valve with pilot valve

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Effect test

Embodiment Construction

[0014] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Such as figure 1 Shown is a sectional view of a cut-off valve with a pilot valve. In the figure, a cut-off valve with a pilot valve includes a valve body 1, a valve core 2 and a screw rod 3; the bottom of the valve body 1 is provided with a water inlet The water port 19, the side wall of the valve body 1 is provided with a water outlet 9 for water outlet, the valve body 1 is provided with a valve port 13, and the valve body 1 is provided with an upper cavity 6 surrounded by the valve body 1, the valve port 13 and the water outlet 9, The valve body 1 is provided with a lower cavity 8 surrounded by the valve body 1, the valve port 13 and the water inlet 19, the block 12 that restricts the movement of the screw rod 3 and the guide rod 4 that restricts the movement direction of the valve core 2; one end of the guide rod 4 is fixed On the valve body...

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PUM

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Abstract

The invention relates to a control valve, in particular to a cut-off-type valve with a pilot valve. When the cut-off-type valve is closed, pressure difference exists on two sides of the valve, and when the cut-off-type valve is opened, difficulty in opening is caused due to quite big resistance. The problem of difficulty in opening the valve is solved. The cut-off-type valve comprises a valve body 1, a valve core 2 and a screw 3, and the pilot valve 7 is arranged on the screw 3; when the cut-off-type valve is opened, the pilot valve 7 is opened firstly, so that the pressure difference of the two sides of the valve is lowered, and opening resistance is reduced.

Description

technical field [0001] The invention relates to a control valve, in particular to a cut-off valve with a pilot valve. Background technique [0002] The valve is a control component in the fluid delivery system, which has functions such as cut-off, adjustment, flow diversion, reverse flow prevention, pressure stabilization, flow diversion or overflow pressure relief. Valves for fluid control systems, valves are used in a wide variety of applications. Nowadays, many valves, such as cut-off valves used in water supply pipelines, have great resistance when the valve is opened due to the pressure difference between the two sides of the valve in the closed state, making it difficult to open. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the invention provides a shut-off valve with a pilot valve. [0004] Technical scheme of the present invention is: [0005] A cut-off valve, including a valve body, a valve core and a screw; Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/32F16K1/36F16K1/48
CPCF16K1/02F16K27/08F16K31/50F16K39/024
Inventor 钱斌
Owner YANCHENG XINGHUO VALVE IND MFG CO LTD
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