CN214277049U

CN214277049U - Sealing structure of lower box cover of diaphragm gas meter

Info

Publication number: CN214277049U
Application number: CN202120326198.8U
Authority: CN
Inventors: 吴庆卫; 吴高翔
Original assignee: Zhejiang Rongxin Intelligent Instrument Co Ltd
Current assignee: Zhejiang Rongxin Intelligent Instrument Co Ltd
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-09-24
Anticipated expiration: 2031-02-04

Abstract

The application relates to a sealing structure of a lower box cover of a diaphragm gas meter, which relates to the technical field of gas meters and comprises a lower box cover body, wherein a hook is arranged at the edge of the lower box cover body, the hook is fixed with the lower box cover body, and a hanging groove is formed in the hook; the improved box cover is characterized in that an embedding groove is formed in the hook, the embedding groove is formed around the edge of the lower box cover body, a sealing ring is arranged in the embedding groove, the sealing ring is embedded in the embedding groove to be matched with the embedding groove, and a supporting piece is arranged between the sealing ring and the embedding groove. This application helps saving the fastening of a plurality of screws to the upper box cover body, promotes the production efficiency of product, does benefit to the effect of later stage product maintenance.

Description

Sealing structure of lower box cover of diaphragm gas meter

Technical Field

The application relates to the technical field of gas meters, in particular to a sealing structure of a lower box cover of a diaphragm gas meter.

Background

At present, the working principle of the diaphragm gas meter is as follows: the gas meter uses the pressure difference of gas in the flowing process of gas in meter body as power, and the distribution of gas flow direction is controlled by the relative position of valve seat and valve cover. The diaphragm of the gas meter consists of two identical gas measuring chambers on the left and right, and each gas measuring chamber is divided into two identical small measuring chambers by a flexible diaphragm. When distributed gas enters four small metering chambers in sequence, the diaphragm is pushed to swing freely, the movement of the diaphragm component drives the connecting rod mechanism through the rocker and enables the valve cover to rotate so as to control each metering chamber to inflate and exhaust in sequence, the gas meter continuously and circularly moves, meanwhile, the eccentric rotating gear of the connecting rod mechanism drives the mechanical one-way counter to count through the transmission of the gear, and finally, the exhaust amount of the gas meter is displayed through the counter.

In the related technology, the measurement cavity of the membrane gas meter currently used in the market is usually sealed by glue. The glue sealing is that the membrane in the metering chamber is fixed on the shell by screws and fastening rings, and sealing glue is filled between sealing surfaces to ensure that the four metering chambers are not communicated with each other.

In view of the above-mentioned related art, the inventor thinks that there is a need to use a plurality of screws to fasten on the casing, and production efficiency is lower, is unfavorable for the maintenance of later stage product.

SUMMERY OF THE UTILITY MODEL

In order to improve production efficiency lower, be unfavorable for the problem of later stage product maintenance, this application provides a seal structure of lower lid of diaphragm type gas table.

The application provides a seal structure of lower lid of diaphragm type gas table adopts following technical scheme:

a sealing structure of a lower box cover of a diaphragm gas meter comprises a lower box cover body, wherein a hook is arranged at the edge of the lower box cover body, the hook is fixed with the lower box cover body, and a hanging groove is formed in the hook; the improved box cover is characterized in that an embedding groove is formed in the hook, the embedding groove is formed around the edge of the lower box cover body, a sealing ring is arranged in the embedding groove, the sealing ring is embedded in the embedding groove to be matched with the embedding groove, and a supporting piece is arranged between the sealing ring and the embedding groove.

Optionally, a first annular groove is formed in one end, close to the hook, of the lower box cover body, and a first rubber ring is embedded in the first annular groove.

Optionally, a guide plate is arranged on the lower box cover body, and the guide plate is fixed with the lower box cover body.

To sum up, this application includes following useful technological effect of seal structure of lower box cover of at least one kind membrane formula gas table:

1. the casing that will with lower lid body complex through hanging the groove on the couple is fixed, then the sealing washer wraps up the casing, supports tight piece and supports the sealing washer tightly on the casing, helps saving the fastening of a plurality of screws to last lid body, promotes the production efficiency of product, does benefit to later stage product maintenance.

Drawings

Fig. 1 is an overall schematic view of a sealing structure of a lower box cover of a diaphragm gas meter according to the present embodiment;

FIG. 2 is a sectional view of the structure of the biasing spring according to the present embodiment;

fig. 3 is an enlarged view of a portion a of fig. 2.

Reference numerals: 1. a lower box cover body; 11. a circular arc angle; 12. a cavity; 13. a first ring groove; 131. a first rubber ring; 14. a second ring groove; 141. a second rubber ring; 2. hooking; 21. a guide ramp; 22. hanging a groove; 23. embedding a groove; 24. a seal ring; 25. the spring is tightly propped; 3. a guide plate; 31. a third ring groove; 32. and a third rubber ring.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses seal structure of lower lid of diaphragm type gas table.

Referring to fig. 1, the sealing structure of the lower box cover of the diaphragm gas meter comprises a lower box cover body 1, wherein the cross section of the lower box cover body 1 is a rectangular column and a column formed by semicircles on two sides of the rectangular length direction, and an arc angle 11 is formed at the lower end of the lower box cover body 1 in the vertical direction. Be formed with cavity 12 on the vertical direction of box cover body 1 deviates from an terminal surface of arc angle 11 down, one side of cavity 12 is open vertical, and the uncovered orientation of cavity 12 deviates from one side of arc angle 11.

Referring to fig. 2 and 3, a first annular groove 13 is formed in one end, away from the arc angle 11, of the lower box cover body 1, the first annular groove 13 is annular, and the direction of a loop line of the first annular groove 13 is the same as the direction of the edge of the lower box cover body 1. The cross section of the first ring groove 13 is rectangular, one side of the first ring groove 13 in the width direction is open, a first rubber ring 131 is arranged in the first ring groove 13, and the first rubber ring 131 is embedded and matched with the first ring groove 13. So that the sealing property is improved.

Referring to fig. 1, one side of the lower box cover body 1, which is far away from the arc angle 11, is provided with a hook 2, the hook 2 is annular, and the annular direction of the hook 2 is the same as the direction of the edge of the lower box cover body 1. One end of the hook 2 and the lower box cover body 1 are integrally formed, and the other end extends towards one side of the lower box cover body 1 far away from the vertical direction.

Referring to fig. 1, a guiding inclined plane 21 is formed at one end of the hook 2 away from the lower box cover body 1, and the guiding inclined plane 21 is inclined downwards from one side away from the lower box cover body 1 to the inner side of the lower box cover body 1.

Referring to fig. 1, a hanging groove 22 is formed in a hook 2, the hanging groove 22 is annular, the annular direction of the hanging groove 22 is the same as the annular direction of the hook 2, the cross section of the hanging groove 22 is rectangular, the length direction of the hanging groove 22 is the same as the vertical direction of the lower box cover body 1, one side of the hanging groove 22 in the width direction is open, and the opening of the hanging groove 22 faces a cavity 12. The housing is guided by the guide slope 21 into the hanging groove 22 so that the ease of fitting is improved.

Referring to fig. 2, an embedding groove 23 is formed in one side of the hanging groove 22 away from the cavity 12 in the width direction, the embedding groove 23 is annular, and the annular direction of the embedding groove 23 is the same as the annular direction of the hook 2. The embedding groove 23 is internally provided with a sealing ring 24, the sealing ring 24 is made of elastic rubber material, the whole sealing ring 24 is annular, and the annular direction of the sealing ring 24 is the same as that of the embedding groove 23. So that the sealing property is improved.

Referring to fig. 2, a resisting part is arranged between the sealing ring 24 and the embedding groove 23, the resisting part comprises a resisting spring 25, the axial direction of the resisting spring 25 is the same as the width direction of the hanging groove 22, one end of the resisting spring 25 in the axial direction is fixed with the groove bottom of the embedding groove 23, the other end of the resisting spring 25 is fixed with the sealing ring 24, and eight resisting springs 25 are uniformly arranged around the annular direction of the sealing ring 24 at intervals. The sealing effect of the sealing ring 24 is improved.

Referring to fig. 3, a second ring groove 14 is formed in one side of the hanging groove 22, which is away from the lower box cover body 1 in the length direction, the second ring groove 14 is annular, and the annular direction of the second ring groove 14 is the same as the annular direction of the hanging groove 22. The cross section of the second ring groove 14 is rectangular, one side of the second ring groove 14 in the width direction is open, a second rubber ring 141 is arranged in the second ring groove 14, and the second rubber ring 141 and the second ring groove 14 are embedded and matched.

Referring to fig. 3, a guide plate 3 is arranged on the lower box cover body 1, the whole guide plate 3 is annular, and the annular direction of the guide plate 3 is the same as the direction of the edge of the lower box cover body 1. The cross-section of deflector 3 is the rectangle, and the one end of deflector 3 length direction and lower lid body 1 integrated into one piece, the other end extends to the one side of keeping away from lower lid body 1. So that the stability of the embedding and matching between the shells is improved.

Referring to fig. 2 and 3, a third ring groove 31 is formed in a side of the guide plate 3, which is away from the cavity 12 in the width direction, the third ring groove 31 is annular, and the annular direction of the third ring groove 31 is the same as the annular direction of the guide plate 3. The cross-section of the third ring groove 31 is rectangular, one side of the third ring groove 31 in the width direction is open, a third rubber ring 32 is embedded in the third ring groove 31, and the third rubber ring 32 and the third ring groove 31 are embedded and matched.

The implementation principle of the sealing structure of the lower box cover of the diaphragm gas meter in the embodiment of the application is as follows: in the application, the staff chooses the casing that corresponds and the cooperation of box cover body 1 down for use, and the terminal surface of casing is contradicted with the guide inclined plane 21 on the couple 2, and deflector 3 leads the casing, then inlays to be established in the groove 22 of hanging of couple 2, and the clearance of the lower box cover body 1 lateral wall of sealing washer 24 seal casing is supported tight spring 25 and is supported tight sealing washer 24, and first rubber circle 131, second rubber circle 141, third rubber circle 32 seal casing and the clearance between the box cover body 1 down.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a seal structure of lower lid of diaphragm type gas table, includes lower lid body (1), its characterized in that: a hook (2) is arranged at the edge of the lower box cover body (1), the hook (2) is fixed with the lower box cover body (1), and a hanging groove (22) is formed in the hook (2);

seted up on couple (2) and inlayed and establish groove (23), it establishes groove (23) and sets up around the border of lower box cover body (1) to inlay, it is provided with sealing washer (24) in groove (23) to inlay to establish, sealing washer (24) with inlay and establish groove (23) and inlay and establish the cooperation, sealing washer (24) and inlay and establish and be provided with the piece of propping between groove (23).

2. The sealing structure of the lower cover of the diaphragm gas meter according to claim 1, characterized in that: lower box cover body (1) is close to the one end of couple (2) and has been seted up first annular (13), first annular (13) are embedded to be equipped with first rubber circle (131).

3. The sealing structure of the lower cover of the diaphragm gas meter according to claim 1, characterized in that: the lower box cover is characterized in that a guide plate (3) is arranged on the lower box cover body (1), and the guide plate (3) is fixed with the lower box cover body (1).