Diaphragm type gas meter

A membrane gas meter and crank gear technology, which is applied to measuring devices, instruments, liquid/fluid solid measurement, etc., can solve the problems of crank gear skew, affecting gas meters, etc., and achieves reduced running resistance, easy assembly, and improved operation. The effect of stability

Pending Publication Date: 2021-11-23
XIAN HANGLI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem in the prior art that the crank gear is biased and swa

Method used

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  • Diaphragm type gas meter

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Embodiment Construction

[0026] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0027] Such as Figure 2-6 As shown, the diaphragm gas meter includes a central shaft 1 and a crank gear structure 2; the crank gear structure 2 includes a crank gear 21, a crank gear shaft 22, and a crank shaft 25, and the crank gear shaft 22 is formed at the bottom end of the crank gear 21. , the crankshaft 25 is eccentrically and fixedly arranged above the crank gear 21, and the center of the crank gear shaft 22 is provided with a central shaft hole with an opening downward; the central shaft hole includes a first assembly hole section 231, a transition hole section, 232 and the second assembly hole section 233, the diameter of the first assembly hole section 231 is smaller than the diameter of the second assembly h...

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Abstract

The invention discloses a diaphragm type gas meter which comprises a center shaft and a crank gear structure. The crank gear structure comprises a crank gear and a crank gear shaft formed at the bottom end of the center of the crank gear. A center shaft hole with a downward opening is formed in the center of the crank gear shaft. The center shaft hole comprises a first assembly hole section, a transition hole section and a second assembly hole section which are sequentially arranged from top to bottom, wherein the diameter of the first assembly hole section is smaller than that of the second assembly hole section, and the diameter of the transition hole section is gradually increased from top to bottom. The center shaft comprises a ball head section, a first shaft section and a second shaft section from top to bottom in sequence, wherein the ball head section is a hemisphere at the top end of the center shaft, the diameter of the first shaft section is smaller than that of the second shaft section, the first assembly hole section is matched with the upper portion of the first shaft section, and the second assembly hole section is matched with the second shaft section. The crank gear is not prone to shaking, so that the running resistance is reduced, and the running stability and precision of the diaphragm type gas meter are improved.

Description

technical field [0001] The invention relates to the technical field of membrane gas meters, in particular to a core structure of a membrane gas meter. Background technique [0002] Membrane gas meter is a flow meter for measuring combustible gas. Among them, the structure of the more commonly used parallel symmetrical rotating membrane gas meter is as follows: figure 1 As shown, the gas enters the metering chamber from the air inlet 011, pushing the diaphragm to swing freely, the movement of the diaphragm assembly drives the connecting rod 09 through the rocker 08 and makes the crank gear 06 rotate, and the crank gear 06 drives the valve cover 010 to rotate Movement, so as to control each metering chamber to inflate and exhaust sequentially, so that the gas meter moves continuously, and at the same time, the connecting rod 09 drives the crank gear 06 and drives the transmission wheel 05 through the transition gear 04, and the transmission wheel 05 drives the counter to count...

Claims

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Application Information

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IPC IPC(8): G01F15/00
CPCG01F15/00
Inventor 刘彦君周文辉张向召冯鑫欧阳浩宇马振奇牛乐陈青玉李少锋范珍星
Owner XIAN HANGLI TECH CO LTD
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