Point valve box

Abstract

The invention relates to a point valve box comprising a box body, wherein a fire arrester is arranged at the top part of the box body; a pressure display meter is arranged at the upper end of the box body; the box body is internally provided with a fixing frame, a decompression device, a spherical valve and a tempering device; the spherical valve is fixedly connected with the fixing frame and the decompression device is fixedly connected with the spherical valve; one end of the tempering device is fixedly connected with the decompression device and the other end of the tempering device is fixedly connected with the bottom part of the box body. The point valve box provided by the invention is practical and convenient and is lower in production cost; the point valve box has stable gas supply pressure and can ensure that fuel gas is stably combusted, backfire can be cut off in time and explosion can be prevented, so that a worker is safer in relevant processes of operating gas cutting, gas welding or flame surface cleaning and the like; and therefore, the point valve box is applicable to various combustible and explosive gases including oxygen, coal gas, natural gas and the like.

Description

technical field [0001] The invention relates to a point valve box. Background technique [0002] In the current metallurgical industry and foundry industry, gas, natural gas and other gases are used in many places. Workers will use gas cutting, gas welding or flame surface cleaning. However, gas, natural gas and other gases may have backfires in the pipeline. Dangerous, prone to explosion, making personal and equipment unsafe. Moreover, when coal gas and natural gas are used, they are affected by external pressure and there is no stable pressure, so that the stable combustion of gas cannot be guaranteed. Contents of the invention [0003] In order to overcome the above defects, the technical problem to be solved by the present invention is to propose a point valve box which is safe, reliable, easy to use and low in cost. [0004] The technical scheme adopted in the present invention is: a point valve box, including a box body, a flame arrester is arranged on the top of t...

AI Technical Summary

Problems solved by technology

[0002] In the current metallurgical industry and foundry industry, gas, natural gas and other gases are used in many places. Workers will use gas cutting, gas welding or flame surface cleaning. However, gas, natural gas and other gases may have backfires in the pipeline. Dangerous, prone to explosion, making personal and equipment unsafe

Moreover, when using coal gas and natural gas, it is affected by external pressure and there is no stable pressure, so the stable combustion of gas cannot be guaranteed.

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