CN202251062U - Mechanical rotary sealing device of horizontal centrifugal pump - Google Patents
Mechanical rotary sealing device of horizontal centrifugal pump Download PDFInfo
- Publication number
- CN202251062U CN202251062U CN2011203442231U CN201120344223U CN202251062U CN 202251062 U CN202251062 U CN 202251062U CN 2011203442231 U CN2011203442231 U CN 2011203442231U CN 201120344223 U CN201120344223 U CN 201120344223U CN 202251062 U CN202251062 U CN 202251062U
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- ring
- rotating
- spring
- rotating shaft
- seat
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Abstract
The utility model discloses a mechanical rotary sealing device of a horizontal centrifugal pump, which is sleeved outside a rotating shaft in an enclosure and comprises a fixed ring, a spring base and a movable ring, wherein the fixed ring is fixedly installed in the enclosure and in sealed connection with the enclosure through a sealing ring; the fixed ring and the rotating shaft are in clearance fit; the spring base is fixedly sleeved on the rotating shaft and provided with a spring pushing surface; the movable ring is arranged between the fixed ring and the spring base; one end of the movable ring and the fixed ring are in resisting connection; resisting connection end faces of the movable ring and the fixed ring have rotary closed surface precision; the other end of the movable ring is in resisting connection with a spring arranged on the spring pushing surface through a movable ring base; and a corrugated pipe made of an elastic material is clamped and held between the movable ring and the movable ring base. Because a compensatory elastic corrugated pipe is arranged in the axial pushing direction of the movable ring, the mutual sealing and fitting between the movable ring and the fixed ring can be continuously kept in the event that the rotating shaft shifts.
Description
Technical field
The utility model relates to a kind of seal arrangement of machinery, particularly a kind of mechanical rotation seal arrangement of horizontal centrifugal pump.
Background technique
The mechanical rotation seal arrangement of horizontal centrifugal pump comprises rotating ring, stationary ring usually in the existing technology at present; Wherein, Be fastened and connected through seal ring between stationary ring and the casing, moving ring sleeve is connected in the rotating shaft and with the rotating shaft rotation, has the butt end face of the friction of relatively rotating between the dynamic and static ring; Have between the end face and rotate airtight surface accuracy; Rotating ring makes the suitable butt pressure of maintenance between the dynamic and static ring butt end face through the spring action that pushes of the other end, guarantees the sealing effect between the dynamic and static ring; The shortcoming of this structure is; Push that spring housing is connected to rotating shaft and with the rotating shaft campaign; When rotating shaft installation precision deficiency or service wear and when the situation of axial motion in the work occurring, push spring can't afford redress moment, cause leakage to keep the applying of butt end face between the dynamic and static ring.
The model utility content
The utility model is in order to overcome defective in the above-mentioned existing technology, can realize that being sealed between the dynamic and static ring rotating shaft string occurs when moving, continues to keep sealing each other to fit.
The utility model provides a kind of mechanical rotation seal arrangement of horizontal centrifugal pump, and the rotating shaft that is socketed in the casing is outside, comprising: stationary ring, and it is fixedly installed in the casing and through seal ring and is connected with casing sealing, and stationary ring and rotating shaft are Spielpassung; Spring seat, it is fixedly sleeved in rotating shaft, and has the pushing tow face of spring; Rotating ring, it is located between stationary ring and the spring seat, and rotating ring one end and stationary ring connect, and have between the butt end face of dynamic and static ring to rotate airtight surface accuracy, and the rotating ring the other end connects through rotating seat and the spring that is arranged on the spring push face; The bellows that the flexible material of clamping is processed between rotating ring and the rotating seat.
Wherein, Rotating seat is the ladder cylindrical-shaped structure, and the open face of its enlarged diameter section is to said stationary ring and be socketed in the rotating ring outside, and the vertical transitional surface and the spring of its ladder connect; Constitute the spring push face of rotating seat, the bearing surface of rotating ring and stationary ring protrudes from the uncovered of rotating seat.
Wherein, bellows is the stepped shaft tubular structure, is processed by elastic rubber material; The bellows enlarged diameter section is held between rotating ring, the rotating seat; The clearance plane of its reduced diameter section between rotating seat and rotating shaft passes to spring; The diameter of reduced diameter section internal diameter and rotating shaft is suitable, and retaining ring and the rotating shaft of its outer surface through socket be fastening, be tightly connected; Bellows forms axial elasticity thrust to rotating ring.Wherein, the ladder transitional surface of bellows is a corrugated, and the both sides of ladder transitional surface connect with rotating ring, rotating seat respectively, when dynamic and static ring butt, receives the elasticity extruding.
Wherein, the reduced diameter section of rotating seat is provided with a plurality of independently axially extended guiding section, and the guiding section gap is socketed in the spring.
Wherein, the retaining ring gap is socketed in the spring, and the surface of retaining ring is provided with the axial guiding slot suitable with guiding section, and the guiding section of rotating seat embeds in the guide slot, and rotating seat can axially move along guide slot under the pushing tow of spring, bellows.
Wherein, the guiding section of rotating seat is 4-8, equidistantly is surrounded on rotating shaft.
Compared with prior art, the utlity model has following beneficial effect:
1,, realizes that being sealed between the dynamic and static ring rotating shaft string occurs when moving, continues to keep sealing each other to fit through on the axial pushing tow direction of rotating ring, compensatory elastic bellows being set;
2, the rotating seat of ladder-type and bellows structure and with the relative position of rotating ring and the design of annexation, when the sealing of dynamic and static ring is fitted, make that the rotation of rotating ring is more stable;
3, the bellows segment of bellows is located between the vertical transitional surface of ladder of exterior edge face and rotating seat of rotating ring, and squeezing effect is more remarkable.
Description of drawings
Fig. 1 is the exploded perspective view of the utility model;
Fig. 2 is the stereogram after the utility model assembling;
Fig. 3 is the main sectional view of the utility model.
In conjunction with the accompanying drawing following reference character of mark above that:
The 1-rotating shaft, the 2-casing, the 3-seal ring, the 4-stationary ring, the 5-rotating ring, the 6-bellows, the 7-rotating seat, the 71-guiding section,, 8-retaining ring, 81-guide slot, 9-spring, 10-spring fixed seat, 11-tightening screw.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the utility model is described in detail, but the protection domain that is to be understood that the utility model does not receive the restriction of embodiment.
The mechanical rotation seal arrangement of the horizontal centrifugal pump of the utility model comprises casing 2, rotating shaft 1, spring seat 10, rotating ring 5, rotating seat 7, spring 9 and stationary ring 4 shown in Fig. 1-3.Stationary ring 4 is fixedly installed in the casing 2 and through seal rings 3 and is connected with casing sealing, and stationary ring 4 is socketed in rotating shaft 1 outside, and with rotating shaft 1 Spielpassung.Spring seat 10 is fixedly sleeved in rotating shaft 1, is fastenedly connected by tight fixed bolt (not shown) and rotating shaft 1 through tightening screw 11, and spring fixed seat 10 has the pushing tow face of spring 9.Spring 9 is socketed in the rotating shaft, and the pushing tow face of one of which end and spring seat 10 connects, and the other end and rotating seat 7 connect.Rotating seat 7 is the ladder cylindrical structural; The enlarged diameter section open face is to stationary ring 4, and reduced diameter section is made up of four (also can be more than four, not shown) independently axially extended guiding section 71; The other end of the outer surface of the vertical transitional surface of ladder and spring 9 connects, and rotating ring 5 is socketed in the inside configuration of rotating seat 7 enlarged diameter sections, and the enlarged diameter section that rotating ring and bearing surface stationary ring protrude from rotating seat 7 is uncovered.The bellows 6 that the flexible rubber material of clamping is processed between rotating ring 5 and the rotating seat 7; Bellows 6 is the internal surface of the vertical transitional surface of ladder of butt rotating seat 7 in the axial direction; And to rotating ring 5 formation axial elasticity thrusts; Cause the moment that butt disappears between the dynamic and static ring can promote rotating ring and stationary ring applying at rotating shaft 1 axial motion, play the effect of compensation.
Further as shown in Figure 3, the internal diameter of rotating seat 7 reduced diameter sections is greater than rotating shaft 1 certain size.The stepped shaft tubular structure of bellows 6 for having large and small diameter section, enlarged diameter section is held between rotating ring 5, the rotating seat 7; The clearance plane of reduced diameter section between rotating seat 7 and rotating shaft 1 passes to spring 9, and the diameter of its internal diameter and rotating shaft 1 is suitable, and the outer surface of reduced diameter section is fastenedly connected with rotating shaft through the retaining ring 8 of socket.Further as shown in Figure 3; The ladder transitional surface of the large and small diameter section of bellows 6 is corrugated, and undulatory ladder transitional surface one side and rotating ring 5 connect, and opposite side and rotating seat 7 connect; When dynamic and static ring butt, this bellows receives the elasticity extruding and has the active force of elastic compensating.
Further like Fig. 1, shown in 3; The guiding section 71 of rotating seat 7 is socketed on spring 9 inboards; Retaining ring 8 gaps are socketed in the spring 9; The surface of retaining ring 8 is provided with the axial guiding slot 81 suitable with guiding section, and the while gap is socketed in the spring 9 in the guiding section 71 embedding guide slots 81 of rotating seat, and rotating seat can axially move along guide slot under the pushing tow of spring, bellows.
Compared with prior art, the utility model is through being provided with compensatory elastic bellows on the axial pushing tow direction of rotating ring, realizes that being sealed between the dynamic and static ring rotating shaft string occurs when moving, continues to keep sealing each other to fit.
More than a disclosed specific embodiment that is merely the utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into the protection domain of the utility model.
Claims (7)
1. the mechanical rotation seal arrangement of a horizontal centrifugal pump is socketed in the rotating shaft outside in the casing, comprising:
Stationary ring, it is fixedly installed in the casing and through seal ring and is connected with casing sealing, and stationary ring and rotating shaft are Spielpassung;
Spring seat, it is fixedly sleeved in rotating shaft, and has the pushing tow face of spring;
Rotating ring, it is located between said stationary ring and the spring seat, and rotating ring one end and said stationary ring connect, and have between the butt end face of dynamic and static ring to rotate airtight surface accuracy; The rotating ring the other end connects through rotating seat and the spring that is arranged on the said spring push face; It is characterized in that,
The bellows that the flexible material of clamping is processed between said rotating ring and the rotating seat.
2. the mechanical rotation seal arrangement of horizontal centrifugal pump according to claim 1; It is characterized in that; Said rotating seat is the ladder cylindrical-shaped structure, and the open face of its enlarged diameter section is to said stationary ring and be socketed in the rotating ring outside, and the vertical transitional surface and the said spring of its ladder connect; Constitute the spring push face of rotating seat, the bearing surface of rotating ring and stationary ring protrudes from the said uncovered of rotating seat.
3. the mechanical rotation seal arrangement of horizontal centrifugal pump according to claim 2 is characterized in that, said bellows is the stepped shaft tubular structure, is processed by elastic rubber material; The bellows enlarged diameter section is held between rotating ring, the rotating seat; The clearance plane of its reduced diameter section between rotating seat and rotating shaft passes to said spring; The diameter of reduced diameter section internal diameter and rotating shaft is suitable, and retaining ring and the rotating shaft of its outer surface through socket be fastening, be tightly connected; Bellows forms axial elasticity thrust to rotating ring.
4. the mechanical rotation seal arrangement of horizontal centrifugal pump according to claim 3; It is characterized in that; The ladder transitional surface of said bellows is a corrugated, and the both sides of ladder transitional surface connect with rotating ring, rotating seat respectively, when dynamic and static ring butt, receives the elasticity extruding.
5. the mechanical rotation seal arrangement of horizontal centrifugal pump according to claim 4 is characterized in that, the reduced diameter section of said rotating seat is provided with a plurality of independently axially extended guiding section, and the guiding section gap is socketed in the spring.
6. the mechanical rotation seal arrangement of horizontal centrifugal pump according to claim 5; It is characterized in that; Said retaining ring gap is socketed in the spring; The surface of retaining ring is provided with the axial guiding slot suitable with guiding section, and the guiding section of rotating seat embeds in the guide slot, and rotating seat can axially move along guide slot under the pushing tow of spring, bellows.
7. the mechanical rotation seal arrangement of horizontal centrifugal pump according to claim 5 is characterized in that, the guiding section of said rotating seat is 4-8, equidistantly is surrounded on rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203442231U CN202251062U (en) | 2011-09-09 | 2011-09-09 | Mechanical rotary sealing device of horizontal centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203442231U CN202251062U (en) | 2011-09-09 | 2011-09-09 | Mechanical rotary sealing device of horizontal centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251062U true CN202251062U (en) | 2012-05-30 |
Family
ID=46112314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203442231U Expired - Fee Related CN202251062U (en) | 2011-09-09 | 2011-09-09 | Mechanical rotary sealing device of horizontal centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202251062U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564793A (en) * | 2015-01-19 | 2015-04-29 | 宁波天工机械密封有限公司 | Dynamic sealing device |
| CN104912842A (en) * | 2015-05-08 | 2015-09-16 | 赵烨坚 | Mechanical seal |
| CN105202193A (en) * | 2015-10-23 | 2015-12-30 | 宁波方力密封件有限公司 | Mechanical seal for compressor |
| CN106246922A (en) * | 2016-08-25 | 2016-12-21 | 浙江南元泵业有限公司 | horizontal mechanical seal for pump |
| CN107762964A (en) * | 2017-11-21 | 2018-03-06 | 浙江天鹰机械密封件有限公司 | Single mechanical end face seal |
| CN112628402A (en) * | 2020-12-27 | 2021-04-09 | 江苏阿科米科技有限公司 | Shaft seal device of horizontal contact type reactor |
-
2011
- 2011-09-09 CN CN2011203442231U patent/CN202251062U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564793A (en) * | 2015-01-19 | 2015-04-29 | 宁波天工机械密封有限公司 | Dynamic sealing device |
| CN104912842A (en) * | 2015-05-08 | 2015-09-16 | 赵烨坚 | Mechanical seal |
| CN105202193A (en) * | 2015-10-23 | 2015-12-30 | 宁波方力密封件有限公司 | Mechanical seal for compressor |
| CN106246922A (en) * | 2016-08-25 | 2016-12-21 | 浙江南元泵业有限公司 | horizontal mechanical seal for pump |
| CN107762964A (en) * | 2017-11-21 | 2018-03-06 | 浙江天鹰机械密封件有限公司 | Single mechanical end face seal |
| CN112628402A (en) * | 2020-12-27 | 2021-04-09 | 江苏阿科米科技有限公司 | Shaft seal device of horizontal contact type 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 |
Granted publication date: 20120530 Termination date: 20200909 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |