CN2658489Y - Autoamtic compensation sealing device - Google Patents
Autoamtic compensation sealing device Download PDFInfo
- Publication number
- CN2658489Y CN2658489Y CN 03266909 CN03266909U CN2658489Y CN 2658489 Y CN2658489 Y CN 2658489Y CN 03266909 CN03266909 CN 03266909 CN 03266909 U CN03266909 U CN 03266909U CN 2658489 Y CN2658489 Y CN 2658489Y
- Authority
- CN
- China
- Prior art keywords
- seal ring
- shaft
- seal
- cup
- output shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model relates to an automatically-compensating seal device disposed between an output shaft and an shaft hole of a case body. The output shaft is provided with a first seal ring and a shaft cover fixedly equipped on the shaft hole. The utility model is characterized in that the shaft cover inside is provided with a second seal ring and a spring is secured between the first seal ring and the second seal ring. The utility model has the advantages of a simple structure, a low cost and an ensured long-time seal performance.
Description
Technical field
The utility model relates to a kind of seal arrangement, particularly a kind of auto-compensating seal arrangement that is used for gas meter.
Background technique
Deaphragm gas meter is a kind of mechanical type instrument and meter for automation, the cumulative measurement of its counter is will rotate by being delivered in the watchcase outside the watchcase by the axis hole of being located on the watchcase by an output shaft, for preventing that coal gas from being leaked by the gap between output shaft and the axis hole, be provided with a seal ring (taper or U-shaped cushion rubber) between output shaft and axis hole, the sealing circle is to compress between keeping inside and outside the output shaft it air tight by a shaft-cup.But long-term the use, because the pivoting friction of output shaft, cushion rubber follows the string gradually in addition, can make the cushion rubber abrasion deformation and produce gas leak phenomenon, be found by the people not quite easily when air leakage is very little, but this must be a hidden danger unexpectedly, when air leakage is big, may cause immeasurable consequence.
The model utility content
Technical problem to be solved in the utility model is, at the above-mentioned deficiency of prior art, and provides a kind of simple in structure, and is with low cost, really can keep the long auto-compensating seal arrangement that seals.
Provided by the utility modelly realize by following technological scheme.
A kind of auto-compensating seal arrangement, the sealing device is arranged between the axis hole of output shaft and housing, on this output shaft, be provided with first seal ring and the shaft-cup that is fixedly arranged on the axis hole, it is characterized in that: be provided with second seal ring in this shaft-cup, a spring is held between this first seal ring and this second seal ring.
Except that above-mentioned essential features, in specific implementation process, also can replenish following technology contents:
This shaft-cup is a cup-shaped, is provided with this second seal ring in it, and this spring is held between this first seal ring and this second seal ring.
This first seal ring is a conical seal ring.
This second seal ring is the U-shaped seal ring.
Advantage of the present utility model is:
This auto-compensating sealing device structure is simple, with low cost, only increases a spring and an O-ring seal on sealing mechanism in the past, and the performance of gas meter is not had any influence, really can keep sealing for a long time, and the user has been increased Security.
For structure characteristic of the present utility model and effect thereof are had further understanding, enumerate specific embodiment now and be described with reference to the accompanying drawings as follows:
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Shown in Figure 1, it is a kind of auto-compensating seal arrangement that is used between output shaft and the axis hole provided by the utility model, the sealing device is arranged between the axis hole 7 of output shaft 4 and housing 8, is provided with first seal ring 1 and the shaft-cup 6 that is fixedly arranged on the axis hole on this output shaft 4; In this shaft-cup 6, also be provided with second seal ring, 3, one springs 2 and be held in this first seal ring 1 and this second seal ring 3.
In the diagram specific embodiment, the axis hole 7 on this housing 8 is to be a cone seal bowl, and its rim of a bowl place is provided with internal thread; This shaft-cup 6 is cup-shapeds, and this shaft-cup 6 is sheathed on the output shaft 4, and is fastened with the internal thread at the set outside thread of its cup-shaped cylindrical and axis hole 7 the rim of a bowl places; This second seal ring 3 is the U-shaped seal ring, is arranged in the cup of this shaft-cup 6; This first seal ring 1 is a conical seal ring, and this conical seal ring is arranged in this cone seal bowl; This spring 2 is held in this first seal ring 1 and this second seal ring 3, make the seal bowl and the output shaft 4 of this taper first seal ring 1 contact axis hole 7 under the elastic force effect, reach sealing effect, U-shaped second seal ring 3 in the other end contact shaft-cup 6 of spring 2 reaches the sealing between shaft-cup 6 and the output shaft 4.
This seal arrangement is by two multi-form seal rings, the employing redundant fashion is combined, and adopt a stainless steel stage clip all the time seal ring to be pushed in the cone seal bowl back-to-back, when seal ring is worn or seals the elasticity reduction, spring continues two O-ring seals are pushed in cone seal bowl and the cup-shaped shaft-cup, and this just plays the compensating action of push-press type; Another spring is a constant pushing force, and the degree of holding tightly of output shaft can not become yet, and helps improving the pressure loss of gas meter and the stability of error in dipping.
The above only is the utility model specific embodiment; everyly be familiar with this skill personage and make various modifications and change very easily in view of the above; therefore, all equivalence replacements that the utility model claim spirit is done that do not break away from all should be included in the protection domain of the present utility model.
Claims (4)
1. auto-compensating seal arrangement, the sealing device is arranged between the axis hole of output shaft and housing, on this output shaft, be provided with first seal ring and the shaft-cup that is fixedly arranged on the axis hole, it is characterized in that: be provided with second seal ring in the lid shaft-cup, a spring is held in and covers between first seal ring and lid second seal ring.
2. auto-compensating seal arrangement according to claim 1 is characterized in that: this shaft-cup is a cup-shaped.
3. auto-compensating seal arrangement according to claim 1 is characterized in that: this first seal ring is a conical seal ring.
4. auto-compensating seal arrangement according to claim 1 is characterized in that: this is and seal ring is the U-shaped seal ring years old.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03266909 CN2658489Y (en) | 2003-07-08 | 2003-07-08 | Autoamtic compensation sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03266909 CN2658489Y (en) | 2003-07-08 | 2003-07-08 | Autoamtic compensation sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2658489Y true CN2658489Y (en) | 2004-11-24 |
Family
ID=34329915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03266909 Expired - Fee Related CN2658489Y (en) | 2003-07-08 | 2003-07-08 | Autoamtic compensation sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2658489Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102405163A (en) * | 2009-05-02 | 2012-04-04 | 威伯科有限公司 | Sealing element for a brake cylinder |
| CN107387763A (en) * | 2017-08-31 | 2017-11-24 | 韩学珍 | A kind of pressure autocompensation sealing ring and hollow rotating dynamic sealing device |
-
2003
- 2003-07-08 CN CN 03266909 patent/CN2658489Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102405163A (en) * | 2009-05-02 | 2012-04-04 | 威伯科有限公司 | Sealing element for a brake cylinder |
| CN107387763A (en) * | 2017-08-31 | 2017-11-24 | 韩学珍 | A kind of pressure autocompensation sealing ring and hollow rotating dynamic sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |