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Rapid pneumatic automatically-controlled gas safety shut-off valve

A safety cut-off valve, gas technology, applied in the direction of valve lift, valve details, valve device, etc., can solve the problems of slow cut-off speed, complicated control, etc., achieve fast cut-off speed, ensure production safety, and high air tightness

Inactive Publication Date: 2012-11-07
朱崇新
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It not only overcomes the disadvantages of electric and hydraulic cut-off valves commonly used in China, such as slow cut-off speed and complicated control, but also cuts off the gas immediately when the power and gas are cut off to ensure production safety. Applicable devices in the production safety of industrial furnaces

Method used

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  • Rapid pneumatic automatically-controlled gas safety shut-off valve
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  • Rapid pneumatic automatically-controlled gas safety shut-off valve

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Embodiment Construction

[0028] In the following examples, the present invention provides the specific process parameters of each device used, which is only for the sake of clarity. According to different application environments and conditions, components with other specifications can be selected or changed, or the connection mode between components can be changed, and such changes still belong to the protection scope of the present invention.

[0029] refer to figure 1 , the pneumatic automatic control fast gas safety cut-off valve of the present invention is composed of a valve body 1 and a pneumatic actuator 13 connected, the valve body 1 is cylindrical, and is sequentially installed with a sealing seat (also known as a valve seat) 2, a sealing seat from the outside to the inside. The pressure ring 3, the sealing seat and the sealing pressure ring are installed on the butterfly plate 4. The valve stem 5 connected with the pneumatic actuator passes through the entire valve body and enters the pneum...

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Abstract

The invention discloses a rapid pneumatic automatically-controlled gas safety shut-off valve which comprises a valve body and a cylinder which are connected. The valve body is cylindrical and provided with a sealing seat and a sealing pressure ring sequentially from outside to inside, the sealing seat and the sealing pressure ring are mounted on a butterfly plate, a valve rod connected with the cylinder penetrates through the whole valve body, a support is arranged at the joint of the valve body and the cylinder, one end of the valve rod is positioned in the support, the valve body and the valve rod are of an eccentric structure, namely, the rotating center of the valve rod deviates from the center of the valve body, and the valve body and the butterfly plate are of an eccentric structure, namely, the center of the valve body deviates from the center of the butterfly plate. The rapid pneumatic automatically-controlled gas safety shut-off valve is of an eccentric multilayer hard-sealing contact seal structure, so that the valve is hermetically and automatically compensated when closed, the valve shut-off speed is higher, and air tightness is higher.

Description

technical field [0001] The invention relates to a safety cut-off valve, in particular to a pneumatic self-controlled rapid gas safety cut-off valve. Background technique [0002] At present, most of the various industrial kilns that use gas as fuel use low-pressure gas burners, and special fans provide combustion-supporting air, and most kilns use air preheating devices. In the production process of this kind of industrial kiln, once the gas and air pressure are too low and the burner cannot work normally, the gas should be cut off immediately and the fan should be stopped (except in special cases). As for the stove getting cold quickly. If the gas cannot be cut off immediately, when the gas or air is low pressure, the gas may enter the air pipe through the mixer of the burner, or the air may enter the gas pipe, especially the air pipe with a preheating device, and a negative pressure will be formed due to the temperature drop , It is easier to make gas enter the air duct,...

Claims

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Application Information

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IPC IPC(8): F16K1/22F16K31/14F16K31/53F16K31/06F16K37/00F16K41/02
Inventor 朱崇新
Owner 朱崇新
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