CN107588232A - A kind of valve stem packing structure - Google Patents
A kind of valve stem packing structure Download PDFInfo
- Publication number
- CN107588232A CN107588232A CN201710901721.3A CN201710901721A CN107588232A CN 107588232 A CN107588232 A CN 107588232A CN 201710901721 A CN201710901721 A CN 201710901721A CN 107588232 A CN107588232 A CN 107588232A
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- packing structure
- valve stem
- stem packing
- annular slab
- 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.)
- Withdrawn
Links
Abstract
The invention discloses a kind of valve stem packing structure, including the sealing ring being arranged in valve seal groove, sealing ring includes annular slab, elastic membrane is provided with the medial surface of annular slab, a toroidal cavity is formed between elastic membrane and the medial surface of annular slab, toroidal cavity is interior filled with gas, screw is provided with the top of valve body, screw connects with seal groove, is screwed with bolt in screw, the end of bolt with the top of annular slab against.The present invention sets inflating cavity in sealing ring, is heaved after inflation, sealing ring is reclined all the time with valve rod, while sets bolt, can press sealing ring, sealing ring is reclined with seal groove, ensure that sealing effectiveness.
Description
Technical field
The present invention relates to a kind of valve stem packing structure, belong to valve part field.
Background technology
Valve stem packing is provided on valve body, and to the space between sealed valve body and bonnet, now traditional filler is adopted
With sealing ring, but ring wear after a period of time is used, make space between sealing ring and valve body and seal groove be present, significantly
Reduce sealing effectiveness.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides a kind of valve stem packing structure.
In order to achieve the above object, the technical solution adopted in the present invention is：
A kind of valve stem packing structure, including the sealing ring being arranged in valve seal groove, sealing ring include annular slab, annular slab
Elastic membrane is provided with medial surface, forms a toroidal cavity between elastic membrane and the medial surface of annular slab, in toroidal cavity filled with
Gas, screw is provided with the top of valve body, screw is connected with seal groove, and bolt, the end of bolt and annular slab are screwed with screw
Top against.
The pressure gauge of detection toroidal cavity internal pressure is provided with the top of valve body.
The end set of bolt has briquetting, and the recess matched with briquetting is provided with the top of annular slab.
Briquetting is cylinder rubber press.
Sealing ring is rubber seal.
The inflation inlet for toroidal cavity inflation is additionally provided with the top of valve body.
The beneficial effect that the present invention is reached：The present invention sets inflating cavity in sealing ring, is heaved after inflation, makes sealing
Circle reclines with valve rod all the time, while sets bolt, can press sealing ring, sealing ring is reclined with seal groove, ensure that close
Seal effect.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention
Technical scheme, and can not be limited the scope of the invention with this.
As shown in figure 1, a kind of valve stem packing structure, including the sealing ring being arranged in the seal groove of valve body 1, sealing ring are rubber
Glue sealing ring, sealing ring include annular slab 2, are provided with elastic membrane 3 on the medial surface of annular slab 2, elastic membrane 3 and annular slab 2
Form a toroidal cavity 4 between medial surface, filled with gas in toroidal cavity 4, the top of valve body 1 is provided with screw, screw with it is close
Sealing groove connects, and is screwed with bolt 5 in screw, the end of bolt 5 with the top of annular slab against.
The top of valve body 1 is provided with the pressure gauge 7 of the detection internal pressure of toroidal cavity 4 and filled for what toroidal cavity 4 was inflated
Gas port 8.
The end set of bolt 5 has briquetting 6, and the top of annular slab 2 is provided with the recess matched with briquetting 6, and briquetting 6 is cylinder
Body rubber briquetting.
Valve stem packing structure sets inflating cavity in sealing ring, is heaved after inflation, sealing ring is reclined all the time with valve rod,
Bolt 5 is set simultaneously, sealing ring can be pressed, sealing ring is reclined with seal groove, ensure that sealing effectiveness.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as protection scope of the present invention.
Claims (6)
- A kind of 1. valve stem packing structure, it is characterised in that：Including the sealing ring being arranged in valve seal groove, sealing ring includes ring Shape plate, elastic membrane is provided with the medial surface of annular slab, a toroidal cavity, ring are formed between elastic membrane and the medial surface of annular slab Filled with gas in shape cavity, screw is provided with the top of valve body, screw is connected with seal groove, and bolt is screwed with screw, bolt At the top of end and annular slab against.
- A kind of 2. valve stem packing structure according to claim 1, it is characterised in that：Detection annular is provided with the top of valve body The pressure gauge of cavity inside pressure.
- A kind of 3. valve stem packing structure according to claim 1, it is characterised in that：The end set of bolt has briquetting, ring The recess matched with briquetting is provided with the top of shape plate.
- A kind of 4. valve stem packing structure according to claim 3, it is characterised in that：Briquetting is cylinder rubber press.
- A kind of 5. valve stem packing structure according to claim 1, it is characterised in that：Sealing ring is rubber seal.
- A kind of 6. valve stem packing structure according to claim 1, it is characterised in that：It is additionally provided with the top of valve body as annular The inflation inlet of cavity inflation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710901721.3A CN107588232A (en) | 2017-09-28 | 2017-09-28 | A kind of valve stem packing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710901721.3A CN107588232A (en) | 2017-09-28 | 2017-09-28 | A kind of valve stem packing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107588232A true CN107588232A (en) | 2018-01-16 |
Family
ID=61048131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710901721.3A Withdrawn CN107588232A (en) | 2017-09-28 | 2017-09-28 | A kind of valve stem packing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107588232A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108688287A (en) * | 2018-05-09 | 2018-10-23 | 秦皇岛可视自动化设备有限公司 | Lamination line, laminating machine, upper cover, elastic seal ring, laminating method |
-
2017
- 2017-09-28 CN CN201710901721.3A patent/CN107588232A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108688287A (en) * | 2018-05-09 | 2018-10-23 | 秦皇岛可视自动化设备有限公司 | Lamination line, laminating machine, upper cover, elastic seal ring, laminating method |
| CN108688287B (en) * | 2018-05-09 | 2023-11-24 | 秦皇岛可视自动化设备有限公司 | Lamination production line, laminating machine, upper cover, elastic sealing ring and lamination method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180116 |
|
| WW01 | Invention patent application withdrawn after publication |