CN101280848A - Mechanical sealing device for axis - Google Patents
Mechanical sealing device for axis Download PDFInfo
- Publication number
- CN101280848A CN101280848A CNA2008100617364A CN200810061736A CN101280848A CN 101280848 A CN101280848 A CN 101280848A CN A2008100617364 A CNA2008100617364 A CN A2008100617364A CN 200810061736 A CN200810061736 A CN 200810061736A CN 101280848 A CN101280848 A CN 101280848A
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- CN
- China
- Prior art keywords
- ring
- seal face
- stationary ring
- rotating ring
- stationary
- 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.)
- Pending
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Abstract
The invention discloses a mechanical sealing device for shaft, comprising a moving ring and a stationary ring, seal face of the moving ring and seal face of the stationary ring are contacted, the moving ring tightly matched with a rotation axis, the stationary ring is steadily connected to an end cap through a guide pin, a plurality of path radiation plough grooves are regularly distributed on the seal face of the moving ring. The present invention possesses the beneficial effects of forming centrifugal action to throwing off sealing medium when an arc groove rotates on the moving ring, and simultaneously forming negative pressure in the cavity between the moving ring and the stationary ring to make pressure lower than ambient pressure, thereby ensuring sealing effect.
Description
Technical field
The present invention relates to a kind of mechanical seal device, particularly a kind of face seals with dynamic and static ring.
Background technique
Traditional axle mainly is to adopt several forms such as seal with elastometic washer, packing box seal, labyrinth sealing with mechanical seal device.But all there is deficiency in above several structure, such as: the problem that rubber ring is easily aging, working life is short appears in the seal with elastometic washer meeting; The stuffing box formula seals then felt displacement easy to wear, easy; And labyrinth sealing exist the operation line speed of too big seal failure easily of oil pocket internal pressure and axle can not be too big etc. defective.
At present, comparatively advanced axle is to adopt the dynamic and static ring sealing device with mechanical seal device, but present dynamic and static ring sealing device exists the plane between rotating ring and the stationary ring easily to be detained foreign material, and when the plane defectives such as sealing easy inefficacy when bad of fitting.
Summary of the invention
The present invention has overcome the shortcoming of prior art, a kind of axle mechanical seal device simple in structure is provided, this axle adopts the dynamic and static ring structure with mechanical seal device, and the seal face of rotating ring is provided with several curve baths, when rotating ring rotated, sealing medium can throw away in the curve bath, and can form negative pressure in the cavity between dynamic and static ring simultaneously, make the pressure in the cavity be lower than ambient pressure, thereby guarantee sealing effect.
Technological scheme of the present invention is achieved in that a kind of is used mechanical seal device, form by rotating ring and stationary ring, the seal face of rotating ring and the seal face of stationary ring fit, rotating ring and running shaft closely cooperate, stationary ring is fixedlyed connected with end cap by guide finger, and regular distribution has some road radiation grooves on the seal face of rotating ring.
As preferably, on the center portion that rotating ring and stationary ring fit, respectively be provided with a circular groove, two grooves formed a cavity when seal face of rotating ring and the seal face of stationary ring were close to.
As preferably, described groove is an arcuate furrow.
As preferably, described groove is the lineal shape groove.
As preferably, on guide finger, be provided with spring, an end and the end cap of spring offset, and the other end and stationary ring offset.
Owing to adopted above-mentioned technological scheme, so compare with mechanical seal device with existing axle, the invention has the beneficial effects as follows: the curve bath on the rotating ring when rotated, form centrifugal action, sealing medium is thrown away, form negative pressure in the cavity between dynamic and static ring simultaneously, make pressure be lower than ambient pressure, thereby guarantee sealing effect.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of rotating ring among the embodiment 1;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the structural representation of rotating ring among the embodiment 2.
Embodiment
The specific embodiment of the present invention is as follows:
Embodiment 1: as Fig. 1, shown in Figure 3, use mechanical seal device for a kind of, form by rotating ring 1 that is ring and the stationary ring 2 that is ring, the seal face of the seal face of rotating ring 1 and stationary ring 2 fits, the center portion that is provided with at rotating ring 1 on this face of seal face is provided with a circular groove 11, and the center portion that is provided with at stationary ring 2 on this face of seal face is provided with a circular groove 12; Rotating ring 1 closely cooperates with running shaft 7, rotates with running shaft 7; Stationary ring 2 is connected with end cap 5 by guide finger 3.Because running shaft 7 is in rotation process, have some along the play on the axis direction, therefore socket spring 4 on guide finger 3, one end and the end cap 5 of spring 4 offset, the other end of spring 4 and stationary ring 2 offset, and by spring 4 stationary ring 2 are pressed on the rotating ring 1, with the play of compensation rotation running shaft 7.5 of stationary ring 2 and end caps adopt rubber ring 8 sealings.
As shown in Figure 2, regular distribution has some road radiation grooves 6 on the seal face of rotating ring 1, described groove 6 is an arcuate furrow, after the seal face of the seal face of rotating ring 1 and stationary ring 2 fits, groove 11 and groove 12 are involutory and have constituted cavity 13, when rotating ring 1 rotation, form negative pressure in cavity 13, make cavity 13 internal pressures be lower than ambient pressure, thereby guarantee sealing effect.
Embodiment 2: as shown in Figure 4, regular distribution has some road radiation grooves 6 on the seal face of rotating ring 1, and described groove 6 is the lineal shape groove, and other technological scheme is identical with embodiment 1.
Claims (5)
1, uses mechanical seal device for a kind of, form by rotating ring and stationary ring, the seal face of rotating ring and the seal face of stationary ring fit, rotating ring and running shaft closely cooperate, stationary ring is fixedlyed connected with end cap by guide finger, it is characterized in that: regular distribution has some road radiation grooves on the seal face of rotating ring.
2, use mechanical seal device for a kind of according to claim 1, it is characterized in that: respectively be provided with a circular groove on the center portion that rotating ring and stationary ring fit, two grooves formed a cavity when seal face of rotating ring and the seal face of stationary ring were close to.
3, use mechanical seal device for a kind of according to claim 1 and 2, it is characterized in that: described groove is an arcuate furrow.
4, use mechanical seal device for a kind of according to claim 1 and 2, it is characterized in that: described groove is the lineal shape groove.
5, use mechanical seal device for a kind of according to claim 1, it is characterized in that: be provided with spring on guide finger, an end and the end cap of spring offset, and the other end and stationary ring offset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100617364A CN101280848A (en) | 2008-05-19 | 2008-05-19 | Mechanical sealing device for axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100617364A CN101280848A (en) | 2008-05-19 | 2008-05-19 | Mechanical sealing device for axis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101280848A true CN101280848A (en) | 2008-10-08 |
Family
ID=40013454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100617364A Pending CN101280848A (en) | 2008-05-19 | 2008-05-19 | Mechanical sealing device for axis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101280848A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107691A (en) * | 2019-06-04 | 2019-08-09 | 江苏大信环境科技有限公司 | Positive/negative-pressure dynamic rotary sealing structure |
| CN114278743A (en) * | 2021-12-30 | 2022-04-05 | 南京翔瑞智能装备技术有限公司 | Valve plate wearing and tearing self compensating's rotatory feeder of no leakage |
-
2008
- 2008-05-19 CN CNA2008100617364A patent/CN101280848A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107691A (en) * | 2019-06-04 | 2019-08-09 | 江苏大信环境科技有限公司 | Positive/negative-pressure dynamic rotary sealing structure |
| CN114278743A (en) * | 2021-12-30 | 2022-04-05 | 南京翔瑞智能装备技术有限公司 | Valve plate wearing and tearing self compensating's rotatory feeder of no leakage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20081008 |