CN201599407U - Mechanical seal - Google Patents
Mechanical seal Download PDFInfo
- Publication number
- CN201599407U CN201599407U CN2010200494136U CN201020049413U CN201599407U CN 201599407 U CN201599407 U CN 201599407U CN 2010200494136 U CN2010200494136 U CN 2010200494136U CN 201020049413 U CN201020049413 U CN 201020049413U CN 201599407 U CN201599407 U CN 201599407U
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- CN
- China
- Prior art keywords
- seal
- ring
- mechanical seal
- seat
- stationary ring
- 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
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- Mechanical Sealing (AREA)
Abstract
The utility model discloses a mechanical seal, which comprises a seal seat, a stationary ring, a dynamic ring and a dynamic ring seat coaxially sleeved on a rotary shaft. The mechanical seal is characterized in that at least one of the dynamic ring seat and the stationary ring is provided with a sealing device used for improving seal reliability of the mechanical seal. The mechanical seal has the advantages that a seal groove with an axial section in an 'n'shape is disposed on the inner side of the dynamic ring seat, namely, a check ring in a conventional mechanical seal is integrally disposed on the dynamic ring seat to avoid deformation of the dynamic ring seat under action of high pressure, accordingly seal reliability of the mechanical seal is improved and installation is more convenient. Additionally, a positioning check ring integrally disposed on the stationary ring prevents a first seal ring from sliding, thereby further guaranteeing seal reliability of the mechanical seal.
Description
Technical field
The utility model relates to a kind of seal arrangement, especially relates to a kind of mechanical seal.
Background technique
Mechanical seal is owing to have sealing reliably, long service life, friction horsepower consumes advantage such as little and is widely used in all kinds of pumps, it mainly comprises machine envelope seat, rotating seat, rotating ring, stationary ring, secondary seal and stretch compensation mechanism, be provided with seal ring between rotating seat and the rotating shaft, be provided with seal ring between stationary ring and the machine envelope seat, and in order to prevent that mechanical seal seal ring on the rotating seat when working from skidding off, at present all be to increase a back-up ring in addition in the end of rotating seat, but the back-up ring that increases deforms under the effect of high pressure easily in addition, influence the sealing reliability of mechanical seal, and back-up ring drops out easily when mounted or misplaces, make install inconvenient; In addition, the seal ring between stationary ring and the machine envelope seat also skids off easily, influences the sealing reliability of mechanical seal.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of easy for installation, reliable sealing mechanical seal.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: a kind of mechanical seal, comprise machine envelope seat, stationary ring, rotating ring and the coaxial rotating seat that is set in the rotating shaft, at least one in described rotating seat and the described stationary ring is provided with the seal arrangement of the sealing reliability that is used to improve mechanical seal.
The structure that is arranged on the seal arrangement on the described rotating seat is: the inboard of described rotating seat is provided with the seal groove of shaft section for " ㄇ " shape, is provided with second seal ring in the described seal groove.
The structure that is arranged on the seal arrangement on the described stationary ring is: be provided with first seal ring between described machine envelope seat and the described stationary ring, be wholely set on the described stationary ring and be useful on the positioning retainer ring that prevents that described first seal ring generation from sliding.
Be provided with outside framework oil seal between described machine envelope seat and the rotating shaft, can make the machine envelope become the water chiller envelope, thereby can prevent to make rotating ring and stationary ring interlock too tight the working life that the prolongation machine seals because the machine envelope heats up.
Compared with prior art, the utility model has the advantages that because the inboard of rotating seat is provided with the seal groove of shaft section for " ㄇ " shape, the back-up ring that is about in the traditional mechanical sealing is wholely set on rotating seat, it can not deformed under the high pressure effect, improved the sealing reliability of mechanical seal, install also more conveniently, be useful on the positioning retainer ring that prevents that first seal ring from take place sliding, further guaranteed the sealing reliability of mechanical seal and on stationary ring, be wholely set.
Description of drawings
Fig. 1 is a sectional view of the present utility model;
Fig. 2 is the enlarged diagram at A place among Fig. 1.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in the figure, a kind of mechanical seal, comprise machine envelope seat 1, stationary ring 2, rotating ring 3 and the coaxial rotating seat 4 that is set in the rotating shaft 7, be provided with first seal ring 5 between machine envelope seat 1 and the stationary ring 2, be wholely set on the stationary ring 2 to be useful on and prevent that first seal ring 5 from the positioning retainer ring 21 that slides taking place, the inboard of rotating seat 4 is provided with the seal groove 41 of shaft section for " ㄇ " shape, is provided with second seal ring 6 in the seal groove 41, is provided with outside framework oil seal 6 between machine envelope seat 1 and the rotating shaft 7.
In the foregoing description, except that structure shown in the accompanying drawing, can only on stationary ring 2, be wholely set to be useful on and prevent that first seal ring 5 from the positioning retainer ring 21 that slides taking place, also can only be provided with the seal groove 41 of shaft section, be provided with second seal ring 6 in the seal groove 41 for " ㄇ " shape in the inboard of rotating seat 4.
Claims (4)
1. mechanical seal, comprise machine envelope seat, stationary ring, rotating ring and the coaxial rotating seat that is set in the rotating shaft, it is characterized in that in described rotating seat and the described stationary ring at least one is provided with the seal arrangement of the sealing reliability that is used to improve mechanical seal.
2. a kind of mechanical seal as claimed in claim 1, it is characterized in that the structure that is arranged on the seal arrangement on the described rotating seat is: the inboard of described rotating seat is provided with the seal groove of shaft section for " ㄇ " shape, is provided with second seal ring in the described seal groove.
3. a kind of mechanical seal as claimed in claim 1, it is characterized in that the structure that is arranged on the seal arrangement on the described stationary ring is: be provided with first seal ring between described machine envelope seat and the described stationary ring, be wholely set on the described stationary ring and be useful on the positioning retainer ring that prevents that described first seal ring generation from sliding.
4. a kind of mechanical seal as claimed in claim 1 is characterized in that being provided with outside framework oil seal between described machine envelope seat and the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200494136U CN201599407U (en) | 2010-01-05 | 2010-01-05 | Mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200494136U CN201599407U (en) | 2010-01-05 | 2010-01-05 | Mechanical seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201599407U true CN201599407U (en) | 2010-10-06 |
Family
ID=42810462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200494136U Expired - Fee Related CN201599407U (en) | 2010-01-05 | 2010-01-05 | Mechanical seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201599407U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822525A (en) * | 2014-03-07 | 2014-05-28 | 龙显杏 | Mechanical sealing device for scraper blade type heat exchanger |
| CN104696525A (en) * | 2015-03-02 | 2015-06-10 | 淄博推进化工机械有限公司 | Cartridge mechanical seal for reactor |
-
2010
- 2010-01-05 CN CN2010200494136U patent/CN201599407U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822525A (en) * | 2014-03-07 | 2014-05-28 | 龙显杏 | Mechanical sealing device for scraper blade type heat exchanger |
| CN103822525B (en) * | 2014-03-07 | 2016-03-23 | 龙显杏 | Scraping plate type heat exchanger mechanically-sealing apparatus |
| CN104696525A (en) * | 2015-03-02 | 2015-06-10 | 淄博推进化工机械有限公司 | Cartridge mechanical seal for reactor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101006 Termination date: 20130105 |