CN208488134U - A kind of sealing structure of gas meter, flow meter metering machine core - Google Patents
A kind of sealing structure of gas meter, flow meter metering machine core Download PDFInfo
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- CN208488134U CN208488134U CN201820804417.7U CN201820804417U CN208488134U CN 208488134 U CN208488134 U CN 208488134U CN 201820804417 U CN201820804417 U CN 201820804417U CN 208488134 U CN208488134 U CN 208488134U
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- bellows
- side cover
- diaphragm
- cylindrical bump
- gas meter
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Abstract
The utility model discloses a kind of sealing structures of gas meter, flow meter metering machine core, including bellows and the side cover being in close contact with bellows, at least provided with a cylindrical bump on the medial surface of the bellows, the groove matched with cylindrical bump is provided on the medial surface of side cover；It is provided with and is sleeved on cylindrical bump and the diaphragm for playing sealing function to bellows and side cover that is connected with plastics rib between the bellows and side cover；It is compressed and is connected by rivet between the bellows, diaphragm and side cover.The utility model is by the way that diaphragm positioning sleeve to be attached on cylindrical bump, compress to bellows, diaphragm and side cover the mode of sealing with rivet again, it is very simple, convenient, reduce the ultrasonic welding sealing unnecessary trouble of bring, energy consumption is reduced, qualification rate is improved.And there is no the state changes of components in seal process for the utility model, ensure that the stiffness requirement of components, it is ensured that the service life of gas meter, flow meter.
Description
Technical field
The utility model relates to gas meter, flow meter accessory technical field, especially a kind of sealing knot of gas meter, flow meter metering machine core
Structure.
Background technique
Gas meter, flow meter is based on a kind of precision for measuring the fuel gas volume such as natural gas, liquefied petroleum gas, coal gas, biogas
Measuring appratus, and the metering of diaphragm gas meter relies on its internal metering machine core.The metering machine core of diaphragm gas meter is divided into four
Chamber realizes the accurate metering of diaphragm gas meter by the intake and exhaust of corresponding chamber, so the leakproofness of metering machine core is especially heavy
It wants.
The sealing means of existing diaphragm gas meter dosing machine core cavity room are to combine in bellows, sealing ring, diaphragm and fix
After pressing plate is combined, they are welded as a whole by ultrasonic bonder, there are the following problems for this mode:
1) components needed for are more, and cooperation precision prescribed is high, and cost needed for producing gas meter, flow meter increases；
2) it is easy to appear failure welding problem, be easy to cause core body gas leakage, and not easy to repair.
Utility model content
There is provided a kind of sealing structures of gas meter, flow meter metering machine core for the utility model technical issues that need to address, with solution
Components needed for the sealing means of certainly existing diaphragm gas meter dosing machine core cavity room are more and failure welding and maintenance easily occur not
Just the problem of, reduces maintenance difficulty to simplify complement.
In order to solve the above technical problems, technical solution adopted in the utility model is as follows.
A kind of sealing structure of gas meter, flow meter metering machine core, including bellows and the side cover being in close contact with bellows, the film
At least provided with a cylindrical bump on the medial surface of box, it is provided on the medial surface of side cover and is matched with cylindrical bump
Groove；Be provided between the bellows and side cover be sleeved on cylindrical bump and be connected with plastics rib for bellows and
Side cover plays the diaphragm of sealing function；It is compressed and is connected by rivet between the bellows, diaphragm and side cover.
Technical solution is advanced optimized, the diaphragm is corrosion resistance diaphragm.
Due to using above technical scheme, technological progress acquired by the utility model is as follows.
The utility model structure is simple, by the way that diaphragm positioning sleeve is attached on cylindrical bump, then with rivet to bellows, every
Film and side cover compress the mode of sealing, very simple, convenient, reduce the ultrasonic welding sealing unnecessary trouble of bring,
Energy consumption is reduced, qualification rate is improved.And there is no the state changes of components in seal process for the utility model, guarantee
The stiffness requirement of components, it is ensured that the service life of gas meter, flow meter.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the partial enlarged view in Fig. 1.
Wherein: 1, bellows, 2, diaphragm, 3, side cover, 4, rivet, 5, plastics rib.
Specific embodiment
Below in conjunction with specific embodiment, the present invention will be further described in detail.
A kind of sealing structure of gas meter, flow meter metering machine core, in conjunction with shown in Fig. 1 to Fig. 2, including bellows 1, side cover 3 and diaphragm 2.
Bellows 1 and side cover 3 constitute the measuring room of gas meter, flow meter, and bellows 1 and side cover 3 are in close contact.The medial surface of bellows 1 up to
It is provided with a cylindrical bump less, settable two, fluted, groove and cylindrical bump is set on the medial surface of side cover 3
It matches, the number of groove setting is identical as the number that cylindrical bump is arranged；Riveting is provided on cylindrical bump and groove
Connecting hole is followed closely, for wearing rivet.
Diaphragm 2 is arranged between bellows 1 and side cover 3, is sleeved on cylindrical bump, and be connected with plastics rib 5, uses
In playing sealing function to bellows 1 and side cover 3.Circular hole identical with cylindrical bump size is offered on diaphragm 2, is convenient for diaphragm
2 positioning.Diaphragm 2 uses corrosion resistant material, may be configured as epithelium.
Connection is compressed by rivet 4 between bellows 1, diaphragm 2 and side cover 3, rivet 4 passes through rivet hole and compresses to three
Sealing.
The round orifices orientation set of diaphragm 2 is attached on cylindrical bump by the utility model first in installation process, then will
The groove on cylindrical bump and side cover 3 on diaphragm 2 is equipped, and rivet 4 is then passed through rivet hole and is positioned to three, most
Rivet is compressed by pressing device afterwards, bellows 1, side cover 3 and 2 three of diaphragm are sealed, it is very convenient to install.
The utility model carries out the metering machine core of gas meter, flow meter only with 2 three bellows 1, side cover 3 and diaphragm structure members
Sealing, very simple reduce the ultrasonic welding sealing unnecessary trouble of bring, reduce energy consumption, improve qualification rate.
The utility model, there is no the state change of components, ensure that the stiffness of components is wanted in seal process
It asks, it is ensured that the service life of gas meter, flow meter.
Claims (2)
1. a kind of sealing structure of gas meter, flow meter metering machine core, the side cover (3) including bellows (1) and with bellows (1) close contact,
It is characterized by: being set on the medial surface of side cover (3) at least provided with a cylindrical bump on the medial surface of the bellows (1)
It is equipped with the groove matched with cylindrical bump；It is provided with and is sleeved on cylindrical bump between the bellows (1) and side cover (3)
And the diaphragm (2) for playing sealing function to bellows (1) and side cover (3) that is connected with plastics rib (5)；The bellows (1),
Connection is compressed by rivet (4) between diaphragm (2) and side cover (3).
2. a kind of sealing structure of gas meter, flow meter metering machine core according to claim 1, it is characterised in that: the diaphragm (2)
For corrosion resistance diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820804417.7U CN208488134U (en) | 2018-05-28 | 2018-05-28 | A kind of sealing structure of gas meter, flow meter metering machine core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820804417.7U CN208488134U (en) | 2018-05-28 | 2018-05-28 | A kind of sealing structure of gas meter, flow meter metering machine core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208488134U true CN208488134U (en) | 2019-02-12 |
Family
ID=65250639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820804417.7U Active CN208488134U (en) | 2018-05-28 | 2018-05-28 | A kind of sealing structure of gas meter, flow meter metering machine core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208488134U (en) |
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2018
- 2018-05-28 CN CN201820804417.7U patent/CN208488134U/en active Active
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