Built-in motor valve for commercial gas meter

Abstract

The invention discloses a built-in motor valve for a commercial gas meter. The original integral structure is changed into a split structure, i.e., the original valve port support is changed into the existing combination type of a valve upper seat and a valve lower seat, the manufacturing technology property of components is improved effectively, the motor valve is more in favor of ensuring the stability of product quality, and the manufacturing cost and integral cost of products are reduced; simultaneously the valve upper seat and the valve lower seat are connected through three connecting rods; the closure of a valve port is realized through the movements of a connecting rod transmission mechanism by a valve bolt. The motor valve provided by the invention has the advantages that firstlythe valve bolt is not in contact with the connecting rods directly, and secondly the transmission structural mode of the valve bolt is improved, the phenomenon of blockage of the valve bolt can not happen, the transmission is stable, a switch valve is reliable, and the supporting point of the valve closure of the valve bolt is changed from one-point supporting of a screw rod into three-point supporting of the existing three groups of connecting rod transmission mechanisms, thus tilting phenomena can not happen during the moving process of the valve bolt, and the stability and reliability during the valve closure are improved.

Description

technical field [0001] The invention belongs to a built-in valve, in particular to a built-in valve of a gas meter. technical background [0002] The publication number originally applied by the applicant is CN101551019, and the publication date is October 7, 2009. A built-in valve is provided in the patent application titled "A Built-in Motor Valve Installed Inside a Commercial Gas Meter". In direct contact with the atmosphere, when the valve is open, the gas enters the gas meter through the valve port. The gas meter itself is sealed and isolated from the atmosphere, which effectively prevents the hidden danger of gas leakage. However, in practical application, we found the following problems. Since the valve plug is an injection molded part embedded with copper parts, it is difficult to manufacture, and it is easy to cause eccentricity between the embedded copper parts of the valve plug and the outer circle, and the valve plug is on the bracket when the valve is closed. S...

AI Technical Summary

Problems solved by technology

However, in practical application, we found the following problems. Since the valve plug is an injection molded part embedded with copper parts, it is difficult to manufacture, and it is easy to cause eccentricity between the embedded copper parts of the valve plug and the outer circle, and the valve plug is on the bracket when the valve is closed. Sliding, so it is very easy to get stuck between the valve plug and the valve when switching the valve, the switching valve is not in place, especially the closing valve is not in place, and it is also difficult to assemble the valve plug and bracket. Long time, high processing cost

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