CN2277466Y - Centrifugal on-off screw seal - Google Patents
Centrifugal on-off screw seal Download PDFInfo
- Publication number
- CN2277466Y CN2277466Y CN 97200369 CN97200369U CN2277466Y CN 2277466 Y CN2277466 Y CN 2277466Y CN 97200369 CN97200369 CN 97200369 CN 97200369 U CN97200369 U CN 97200369U CN 2277466 Y CN2277466 Y CN 2277466Y
- Authority
- CN
- China
- Prior art keywords
- centrifugal
- utility
- model
- rotating ring
- seal
- 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 relates to a centrifugal on-off screw seal. A gap is formed between a shaft sleeve and a cavity cover to be sealed, wherein, one end of the shaft sleeve is provided with screw threads, and the other end is uniformly provided with centrifugal holes; both sides of each centrifugal hole of the shaft sleeve are provided with a movable ring and a stationary ring which form a variable gap; the movable ring is provided with a spring, and the interior of each centrifugal hole is provided with a centrifugal column head. The utility model has the advantages of simple structure and easy realization; the service life of an original mechanical seal is extended, and the seal is reliable in use; the utility model can be used for a pump and other rotary machines.
Description
The utility model relates to the spiral sealing of a kind of centrifugal folding, belongs to mechanical seal device, and international classification number is: F16J9/00.
Along with the development of modernization industry, the shaft end seal problem of centrifugal pump also is developed, and traditional material filling type sealing is replaced by present spring or bellows type mechanical seal.China's utility model patent (No. 90222370.4) discloses a kind of " a kind of novel mechanical sealing ".This patent has proposed to adopt independent hold down gag to produce required various pre-pressing force to mechanical sealing linkage ring, stationary ring secondary seal, mechanical seal secondary seal material, range of structures have been enlarged, thereby make it be particularly useful for high temperature, low temperature, severe corrosive working condition, this mechanical seal can be used for unbalanced type, balance type, overbalance type under the prerequisite of not revising axle and axial installation dimension.The advantage of this model utility is conspicuous, but it equally with prior art all also exists a common shortcoming, is exactly the problem that all exists sealing surface wear.Especially the very high bellows mechanical seal of cost, sealing surface causes very big waste once wearing and tearing just need integral replacing.
The purpose of this utility model is just in order to solve deficiency of the prior art, and proposed the spiral sealing of a kind of centrifugal folding.This sealing designs by exocentric structure, can open closure during shutdown when equipment rotates.The reliability of assurance equipment when spiral seal.
The purpose of this utility model is achieved in that
The spiral sealing of centrifugal folding is made up of Seal cage lid and stationary ring etc.One one end has screw thread, and the other end on average has the axle sleeve of centrifugal hole, and forms the gap between the lid of sealed chamber, rotating ring and stationary ring are equipped with in both sides at the centrifugal hole of axle sleeve, rotating ring and stationary ring form variable gap, and spring is housed on rotating ring, and centrifugal column cap is housed in the centrifugal hole.
The purpose of this utility model can also be further perfect by following steps:
It is opposite with the sense of rotation of axle that screw thread on the spiral sealing Intermediate shaft sleeve of centrifugal folding also can be spiral chute and rotation direction; The annular sloping platform or the skewed slot that contact with centrifugal column cap are arranged on the rotating ring internal surface; Spring can be any one elastic element.
The utility model has 1 width of cloth accompanying drawing, is most preferred embodiment of the present utility model, also is the accompanying drawing of specification digest simultaneously.
Fig. 1, sectional drawing of the present utility model
The utility model compared with prior art has following advantage: simple in structure, be easy to realize; Greatly Prolonged greatly the service life of former machinery sealing, and sealing is reliable when work; Can be used in pump and In some other rotation machinery.
Below in conjunction with accompanying drawing most preferred embodiment of the present utility model is described further:
Most preferred embodiment of the present utility model as shown in Figure 1, have the screw thread 8 of certain-length at the left end of axle sleeve 1, screw thread 8 parts and Seal cage lid 2 form gap A, the rotation direction of screw thread 8 is opposite with the sense of rotation of axle 7, right-hand member at axle sleeve 1 has some equally distributed centrifugal holes 9, and centrifugal column cap 5 is housed in centrifugal hole 9.
When equipment operation, screw thread on the axle sleeve 18 is lived medium-tight, and this moment, centrifugal column cap 5 was pushed rotating ring 4 left open, and rotating ring 4 and stationary ring 6 are no longer rubbed because action of centrifugal force.
When shutting down, centrifugal column cap 5 loses centrifugal force, and under the effect of spring 3, rotating ring 4 is pushed to right-hand, so rotating ring 4 and stationary ring 6 closures prevent that liquid medium from leaking.
Claims (4)
1, the spiral sealing of a kind of centrifugal folding, form by Seal cage lid (2), stationary ring (6) etc., it is characterized in that: one one end has screw thread (8), the other end on average has the axle sleeve (1) of centrifugal hole (9), and form gap A between the sealed chamber lid (2), in the both sides of the centrifugal hole (9) of axle sleeve (1) rotating ring (4) and stationary ring (6) are housed, rotating ring (4) forms variable gap B with stationary ring (6), spring (3) is housed on rotating ring (4), centrifugal column cap (5) is housed in the centrifugal hole (9).
2, the spiral sealing of centrifugal folding according to claim 1 is characterized in that: it is opposite with the sense of rotation of axle (7) that the screw thread (8) on the said axle sleeve (1) also can be spiral chute and rotation direction.
3, the spiral sealing of centrifugal folding according to claim 1 is characterized in that: on said rotating ring (4) internal surface annular sloping platform or the skewed slot that contacts with centrifugal column cap (5) arranged.
4, according to the described spring of claim 1 (3) but any one elastic element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97200369 CN2277466Y (en) | 1997-01-09 | 1997-01-09 | Centrifugal on-off screw seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97200369 CN2277466Y (en) | 1997-01-09 | 1997-01-09 | Centrifugal on-off screw seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2277466Y true CN2277466Y (en) | 1998-04-01 |
Family
ID=33922038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97200369 Expired - Fee Related CN2277466Y (en) | 1997-01-09 | 1997-01-09 | Centrifugal on-off screw seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2277466Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100570181C (en) * | 2007-04-30 | 2009-12-16 | 苏州东菱振动试验仪器有限公司 | Rotating dynamic and static sealing device and application thereof |
| CN102506176A (en) * | 2011-09-26 | 2012-06-20 | 黑龙江建龙钢铁有限公司 | Mechanical sealing device for water pump |
| CN101963228B (en) * | 2009-07-23 | 2012-10-17 | 祥景精机股份有限公司 | Cartridge type double-shaft seal |
| CN107654413A (en) * | 2016-05-27 | 2018-02-02 | 柴德维 | A kind of magnetic suspension saves air blower mechanical sealing member |
-
1997
- 1997-01-09 CN CN 97200369 patent/CN2277466Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100570181C (en) * | 2007-04-30 | 2009-12-16 | 苏州东菱振动试验仪器有限公司 | Rotating dynamic and static sealing device and application thereof |
| CN101963228B (en) * | 2009-07-23 | 2012-10-17 | 祥景精机股份有限公司 | Cartridge type double-shaft seal |
| CN102506176A (en) * | 2011-09-26 | 2012-06-20 | 黑龙江建龙钢铁有限公司 | Mechanical sealing device for water pump |
| CN107654413A (en) * | 2016-05-27 | 2018-02-02 | 柴德维 | A kind of magnetic suspension saves air blower mechanical sealing member |
| CN107664138A (en) * | 2016-05-27 | 2018-02-06 | 柴德维 | Magnetic suspension saves air blower mechanical sealing member |
| CN107676296A (en) * | 2016-05-27 | 2018-02-09 | 柴德维 | A kind of magnetic suspension saves air blower mechanical sealing member |
| CN107816451A (en) * | 2016-05-27 | 2018-03-20 | 柴德维 | Magnetic suspension saves air blower mechanical sealing member |
| CN107816452A (en) * | 2016-05-27 | 2018-03-20 | 柴德维 | A kind of magnetic suspension saves air blower mechanical sealing member |
| CN107906042A (en) * | 2016-05-27 | 2018-04-13 | 柴德维 | A kind of energy saving air blower mechanical sealing member of magnetic suspension |
| CN107939721A (en) * | 2016-05-27 | 2018-04-20 | 柴德维 | The energy saving air blower mechanical sealing member of magnetic suspension |
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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 |