CN201206562Y - Seal structure for centrifugal pump - Google Patents
Seal structure for centrifugal pump Download PDFInfo
- Publication number
- CN201206562Y CN201206562Y CNU2008200131968U CN200820013196U CN201206562Y CN 201206562 Y CN201206562 Y CN 201206562Y CN U2008200131968 U CNU2008200131968 U CN U2008200131968U CN 200820013196 U CN200820013196 U CN 200820013196U CN 201206562 Y CN201206562 Y CN 201206562Y
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- Prior art keywords
- ring
- centrifugal pump
- sealing
- pump
- stationary
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- Expired - Fee Related
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- Mechanical Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a centrifugal pump, particularly a sealing structure for the centrifugal pump. The sealing structure comprises a first O-shaped ring arranged between a pump shaft and a transmission seat, a corrugated tube with two ends respectively and fixedly connected with the transmission seat and a moving ring, a stationary ring in contact connection with the moving ring, a stationary ring seat sleeved outside the stationary ring, and a second O-shaped ring at the contact part of the stationary ring and the stationary ring seat. The sealing structure is realized without substantially changing original pump body structure, and a weld metal corrugated tube mechanical sealing substitutes for packing sealing. Therefore, the centrifugal pump has good compensability for shaft vibration and oscillation adaptability at a high speed to maintain good binding force with a sealing end and greatly enhance shaft sealing effect.
Description
Technical field
The utility model relates to a kind of centrifugal pump, relates in particular to a kind of centrifugal pump sealing configuration.
Background technique
Usually the way to centrifugal pump seal has packing seal, mechanical seal, floating seal, labyrinth sealing etc.Packing seal is maximum a kind of seal form that centrifugal pump is used in sealing.As shown in Figure 1, packing seal is made up of filler cover 1, packing ring 2, filler 3, Gland 4, stud bolt 5 and nut 6 etc.It is that intimate by filler and axle contacts and realizes sealing.When normal operation, must filler be compressed with gland, just be unlikely to make liquid from the pump shaft external leakage.But can not press too tightly otherwise the friction of axle and filler increase, can generate heat when serious and reduce the efficient of pump.The packing seal material therefor is generally cotton fabric that graphite, butter soaked, asbestos, metal foil bag asbestos core, teflon etc.But general gland sealed leakage rate is about 6 droplets/minute.Packing seal is short working life, needs to safeguard that at any time sealing effect is also not ideal.
The characteristics of mechanical seal are good seal performance, and leakage rate is few, long service life, and axle and axle sleeve are not vulnerable to decrease ring, and power consumpiton is little, and the efficient of pump is than higher.But the packing seal that replaces centrifugal pump with mechanical seal then needs to transform the structure of the pump housing or redesigns special purpose spring mechanical seal.Its application is very restricted.
The model utility content
The utility model provides a kind of centrifugal pump sealing configuration, purpose exactly in order to solve the problems of the technologies described above be to replace centrifugal pump gland sealed centrifugal pump mechanical seal structure in the situation that is not changing original pump body structure basically.
To achieve these goals, the utility model is achieved in that a kind of centrifugal pump sealing configuration, its structure is as follows: be provided with O type ring between pump shaft and retainer, fixedly connected with rotating ring with retainer respectively in the two ends of bellows, rotating ring is connected with the stationary ring contact, stationary ring is with stationary seat outward, and stationary ring and stationary seat contacting point are provided with O type ring.
Described bellows and retainer and rotating ring are for being welded to connect.
The utility model has the advantages of: welded metal-bellows mechanical seal replaces centrifugal pump gland sealed method, it is poor thoroughly to have overcome the gland sealed sealing effect, working life, weak point needed shortcomings such as maintenance at any time, had improved the efficient of pump greatly, had reduced power consumpiton.Welded metal-bellows mechanical seal replaces centrifugal pump gland sealed structure, does not change under the situation of original pump body structure just the method that follower is made into the mechanical sealing static ring seat basically and has realized whole model utility contents.Method is simple.
The utility model is to finish under the situation that does not change original pump body structure basically, welded metal-bellows mechanical seal replaces packing seal, pump vibration and runout adaptability to axle under high speed has good compensation ability more by force like this, the assurance sealed end is fitted well, strengthens the shaft sealing effect greatly.
Description of drawings
Fig. 1 is the structural representation of conventional centrifugal pump.
Fig. 2 is a structural representation of the present utility model.
Among the figure, 1, the filler cover; 2, packing ring; 3, filler; 4, Gland; 5, stud bolt; 6, nut; 7, pump shaft; 8, retainer; 9, O type ring; 10, bellows; 11, rotating ring; 12, stationary ring; 13, stationary seat; 14, O type ring.
Embodiment
Below embodiment of the present utility model is done to describe in further detail.
As shown in Figure 1, a kind of centrifugal pump is as follows with sealing configuration: be provided with O type ring 9 between pump shaft 7 and retainer 8, fixedly connected with rotating ring 11 with retainer 8 respectively in the two ends of bellows 10, rotating ring 11 is connected with stationary ring 12 contacts, be with stationary seat 13 outside the stationary ring 12, stationary ring 12 and stationary seat 13 contacting points are provided with O type ring 14.Wherein bellows 10 and retainer 8 and rotating ring 11 are for being welded to connect.Welded metal-bellows mechanical seal is that the two ends of welded metal bellow and retainer and rotating ring are welded into integral body, so except subsidizing the seal ring, also possess serviceability temperature far-ranging characteristics-30 ℃-270 ℃.Characteristics are stronger to the vibration and the runout adaptability of axle down at a high speed, and good compensation ability is arranged, and the assurance sealing both ends is fitted well.The utility model replaces with welded metal-bellows mechanical seal makes under the situation that centrifugal pump gland sealed method do not change original pump body structure basically.
The utility model relates to the method that the centrifugal pump packing seal changes welded metal-bellows mechanical seal into, and it comprises the steps: follower is changed into the stationary seat of welded metal-bellows mechanical seal.Take off filler that pump shaft puts and, put the installation welded metal-bellows mechanical seal at pump shaft then, at last the rotating ring of bellows and stationary ring applying position are adjusted to behind the optimum position fixedly stationary seat axle sleeve surface scrub.This method is not change basically under the situation of original pump body structure to finish, welded metal-bellows mechanical seal replaces the gland sealed method, pump vibration and runout adaptability to axle under high speed has good compensation ability more by force like this, the assurance sealed end is fitted well, strengthens the shaft sealing effect greatly.
Claims (2)
1, a kind of centrifugal pump sealing configuration, it is characterized in that structure is as follows: being provided with O type ring between pump shaft and retainer, fixedlys connected with rotating ring with retainer respectively in the two ends of bellows, and rotating ring is connected with the stationary ring contact, stationary ring is with stationary seat outward, and stationary ring and stationary seat contacting point are provided with O type ring.
2, centrifugal pump sealing configuration according to claim 1 is characterized in that described bellows and retainer and rotating ring are for being welded to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200131968U CN201206562Y (en) | 2008-05-29 | 2008-05-29 | Seal structure for centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200131968U CN201206562Y (en) | 2008-05-29 | 2008-05-29 | Seal structure for centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201206562Y true CN201206562Y (en) | 2009-03-11 |
Family
ID=40465625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200131968U Expired - Fee Related CN201206562Y (en) | 2008-05-29 | 2008-05-29 | Seal structure for centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201206562Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022540A (en) * | 2009-09-18 | 2011-04-20 | 上海冠龙阀门机械有限公司 | Floating shaft lever sealing structure |
| CN103758762A (en) * | 2014-02-13 | 2014-04-30 | 山东长志泵业有限公司 | Feeding pump for delay coking heating furnace |
| CN109027245A (en) * | 2018-10-23 | 2018-12-18 | 昆山福步工业设备有限公司 | A kind of New corrugated pipe mechanical seal |
-
2008
- 2008-05-29 CN CNU2008200131968U patent/CN201206562Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022540A (en) * | 2009-09-18 | 2011-04-20 | 上海冠龙阀门机械有限公司 | Floating shaft lever sealing structure |
| CN103758762A (en) * | 2014-02-13 | 2014-04-30 | 山东长志泵业有限公司 | Feeding pump for delay coking heating furnace |
| CN109027245A (en) * | 2018-10-23 | 2018-12-18 | 昆山福步工业设备有限公司 | A kind of New corrugated pipe mechanical seal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090311 Termination date: 20100529 |