Diaphragm box and side cover sealing structure of diaphragm gas meter

Abstract

A diaphragm box and side cover sealing structure of a diaphragm gas meter. A glue storage groove is formed in the surface where a diaphragm box is bonded to a side cover, and a limiting rib used for limiting the excessive pressing of the side cover to the diaphragm box is arranged on one side of the glue storage groove. Glue in the glue storage groove is applied, the glue amount height exceeds the height of the limiting rib, the side cover is mounted on the diaphragm box, and the limiting rib limits the continuous downward pressing of the side cover, so that the effective sealing glue amount between the diaphragm box and the side cover can be guaranteed, and the sealing performance between the diaphragm box and the side cover is ensured, thereby avoiding gas leakage.

Description

A membrane gas meter diaphragm box and side cover sealing structure Technical Field

[0001] The utility model relates to a membrane box and a side cover sealing structure of a membrane type gas meter, belonging to the technical field of membrane type gas meters. Background Art

[0002] Diaphragm gas meters utilize the pressure differential during gas flow within the meter body as a driving force, with the relative positions of the valve seat and valve cover controlling the distribution of gas flow. The gas meter's diaphragm box consists of two identical gas measurement chambers, one on the left and one on the right. Each gas measurement chamber is divided into two identical smaller chambers by a flexible diaphragm. As the distributed gas sequentially enters the four smaller chambers, it pushes the diaphragms to swing freely. The movement of the diaphragm assembly drives the connecting rod mechanism, a double-crank rocker mechanism, through a rocker arm, causing the valve cover to rotate, thereby controlling the sequential filling and exhaust of each chamber, causing the gas meter to cycle continuously. Simultaneously, the eccentric rotating gear of the connecting rod mechanism drives a mechanical one-way counter through gear transmission, ultimately displaying the gas meter's exhaust volume.

[0003] The diaphragm box and side cover of the diaphragm gas meter are bonded together with glue. After applying the glue, if the diaphragm box and the side cover are over-extruded, the sealant will be squeezed out of the sealing part and cause glue overflow. After squeezing, there will easily be too little glue somewhere between the two, resulting in poor sealing.

[0004] Summary of the Invention

[0005] The technical problem to be solved by the utility model is: how to ensure the sealing between the membrane box and the side cover.

[0006] In order to solve the above technical problems, the utility model provides a membrane box and side cover sealing structure for a diaphragm gas meter, wherein a glue storage groove is provided on the surface of the membrane box bonded to the side cover, and a limiting rib is provided on one side of the glue storage groove for limiting excessive extrusion of the side cover toward the membrane box.

[0007] Preferably, the height of the limiting rib protrusion is 0.3 mm.

[0008] Preferably, the glue storage groove has a width of 1.5 mm and a depth of 1 mm.

[0009] Apply glue to the glue storage tank. The glue height exceeds the height of the limiting rib. The side cover is installed on the membrane box. The limiting rib limits the side cover from continuing to squeeze downward, which will ensure an effective amount of sealant between the membrane box and the side cover, ensuring the sealing between the membrane box and the side cover to avoid air leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] FIG1 is a schematic diagram of a diaphragm box and a side cover sealing structure of a diaphragm gas meter provided by the present invention;

[0011] FIG2 is a side view of FIG1;

[0012] FIG3 is a partial enlarged view of portion I in FIG2 . DETAILED DESCRIPTION

[0013] In order to make the present invention more clear and easy to understand, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0014] Example

[0015] As shown in Figures 1-3, a diaphragm gas meter diaphragm box and side cover sealing structure is provided by the utility model. A glue storage groove 1 is provided on the surface of the diaphragm box 1 that is bonded to the side cover, and a limiting rib 2 is provided on one side of the glue storage groove 1 for limiting the side cover from excessively squeezing toward the diaphragm box 1.

[0016] The height of the protrusion of the limiting rib 2 is 0.3 mm.

[0017] The glue storage groove 1 has a width of 1.5 mm and a depth of 1 mm.

[0018] Apply glue to the glue storage tank. The glue height exceeds the height of the limiting rib. The side cover is installed on the membrane box. The limiting rib limits the side cover from continuing to squeeze downward, which will ensure an effective amount of sealant between the membrane box and the side cover, ensuring the sealing between the membrane box and the side cover to avoid air leakage.

Claims

1. A diaphragm gas meter diaphragm box and side cover sealing structure, characterized in that, On the surface of the bellows (1) that is bonded to the side cover, there is a glue storage groove (1), and on one side of the glue storage groove (1), there is a limiting rib (2) for limiting the side cover.

2. The diaphragm gas meter diaphragm box and side cover sealing structure according to claim 1, characterized in that, The height of the raised limiting rib (2) is 0.3 mm.

3. The diaphragm gas meter diaphragm box and side cover sealing structure according to claim 1, characterized in that, The width of the glue storage groove (1) is 1.5 mm, and the depth is 1 mm.

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