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Stop valve

A shut-off valve and valve body technology, applied to shut-off valves. It can solve the problems of long opening and closing time, many parts, complex structure, etc., and achieve the effect of low cost, simple and compact structure, and rapid opening and closing.

Inactive Publication Date: 2012-01-11
JIANGSU SHENTONG VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of existing gate valves, globe valves and other shut-off valves with many parts, complicated structure and long opening and closing time, the invention provides a shut-off valve

Method used

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Embodiment Construction

[0010] Such as figure 1 with figure 2 As shown, a cut-off valve includes a valve body 1, a valve seat 2, and a valve disc 3. The valve seat 2 is fixed in the valve body 1. There is also a driving cylinder 4 in the valve body 1. The driving cylinder 4 is connected to the valve through a bracket 8. The body 1 is connected, and a piston 7 is installed in the driving cylinder 4. The valve disc 3 is connected with the piston 7 through the piston rod 5 to form a whole. The driving cylinder 4 is divided into a left chamber and a right chamber by the piston 7. The left chamber extends out of the valve body 1 and Solenoid valve 10 communicates with gas source, and the back side of piston 7 in the right chamber is equipped with spring 6. Between the piston 7 and the drive cylinder 4, between the piston rod 5 and the drive cylinder 4 are sealed by O-rings.

[0011] When the valve is opened, the solenoid valve 10 is energized, compressed air enters the left chamber of the drive cylinde...

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PUM

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Abstract

The invention provides a stop valve, which comprises a valve body, a valve seat and a valve flap, wherein the valve seat is fixed in the valve body; a driving cylinder is also arranged in the valve body and is connected with the valve body through a bracket; a piston is arranged in the driving cylinder; the valve flap is connected with the piston into a whole through a piston rod; the driving cylinder is divided into a left cavity and a right cavity by the piston; the left cavity extends out of the valve body and an electromagnetic valve through a pipe fitting to be communicated with a gas source; and the back face of the piston in the right cavity is provided with a spring. The stop valve has the beneficial effects of simple and compact structure, low cost, convenience in maintenance, restoration through spring force and capability of realizing quick opening and closing.

Description

technical field [0001] The invention relates to a valve device, in particular to a shut-off valve. Background technique [0002] At present, the shut-off valves used in metallurgy, petrochemical, municipal and other fields to cut off the flow of media generally use gate valves and globe valves, which have many parts and complex structures. To complete an opening and closing action, the valve stem needs to rotate dozens of times, and the opening and closing time is long. . Contents of the invention [0003] In order to overcome the disadvantages of existing shut-off valves such as gate valves and globe valves, which have many parts, complex structures, and long opening and closing times, the invention provides a shut-off valve. [0004] The technical solution adopted by the present invention to solve the technical problem is a cut-off valve, which includes a valve body, a valve seat, and a valve flap. , a piston is installed in the drive cylinder, and the valve disc is co...

Claims

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Application Information

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IPC IPC(8): F16K1/00F16K31/122
Inventor 张逸芳陆平周锦亚
Owner JIANGSU SHENTONG VALVE