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Double protection type emergency cut-off valve

A shut-off valve, double protection technology, applied in the direction of safety valve, balance valve, valve device, etc., can solve the problems of secondary accidents, sparks, safety accidents, etc., and achieve the effect of preventing secondary accidents

Inactive Publication Date: 2010-10-20
JINAGSU PU TAILONG VALVE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, shut-off valves are widely used in gas or liquid transmission pipelines, so they have high safety requirements. When the flow rate of the transmission medium is too fast or the flow rate is too large, static electricity and sparks are likely to be generated due to the friction between the medium and the valve or the inner wall of the pipeline. Causing safety accidents; at the same time, when a fire occurs outside, if the valve is not cut off in time, it is easy to cause secondary accidents

Method used

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Embodiment Construction

[0015] see figure 1 , the present invention relates to a double-protection type emergency shut-off valve, which includes a valve cover 1, a valve seat 8 and a valve body 11, and the valve cover 1, valve seat 8 and valve body 11 are sequentially stacked and assembled into a whole from top to bottom, A valve shaft 3 is inserted into the whole, and the top of the valve shaft 3 is located in the valve cover 1, and the bottom is located in the valve body 11. The upper part of the valve shaft 3 is provided with a boss 301, and the boss 301 is provided with a support 302, a large spring 2 is set on the upper part of the valve shaft 3, the large spring 2 is located in the valve cover 1, and one end of the large spring 2 is connected with the valve cover 1, and the other end is connected with the support member 302, and the boss 301 The bottom is provided with a small sealing ring 4, a valve disc 5, a large sealing ring 6 and a small spring 7 in sequence, and the small sealing ring 4, ...

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Abstract

The invention relates to a double protection type emergency cut-off valve, which comprises a valve cover (1), a valve seat (8) and a valve body (11), wherein the valve cover (1), the valve seat (8) and the valve body (11) are overlapped in sequence from top to bottom to be assembled into a whole; a valve shaft (3) is inserted into the whole body; a small cam (12) is connected with the bottom of the valve shaft (3) and is hinged with a short pull rod (13) arranged on the outer wall of the valve body (11); a guide pipe (17) is arranged on the outer wall of the valve body (11); a pull rod joint (15) is arranged at one end of the guide pipe (17) and is connected with the short pull rod (13) through a fusible alloy (14); the other end of the guide pipe (17) is connected with a spring (16); and the other end of the spring (16) is connected with the short pull rod (13). The double protection type emergency cut-off valve has the overcurrent protection function and can automatically close the valve when encountering fire.

Description

(1) Technical field [0001] The invention designs a shut-off valve, especially a double-protection emergency shut-off valve. (2) Background technology [0002] At present, shut-off valves are widely used in gas or liquid transmission pipelines, so they have high safety requirements. When the flow rate of the transmission medium is too fast or the flow rate is too large, static electricity and sparks are likely to be generated due to the friction between the medium and the valve or the inner wall of the pipeline. At the same time, when a fire occurs outside, if the valve is not cut off in time, it is easy to cause a secondary accident. (3) Contents of the invention [0003] The object of the present invention is to overcome the above disadvantages and provide a double-protection emergency shut-off valve which has the function of overcurrent protection and can automatically close the valve in case of fire. [0004] The object of the present invention is achieved in this way:...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/36F16K17/38
Inventor 朱志雄
Owner JINAGSU PU TAILONG VALVE IND CO LTD
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