CN204327572U - Axial subdivision two end supports centrifugal pump interstage sealing device - Google Patents
Axial subdivision two end supports centrifugal pump interstage sealing device Download PDFInfo
- Publication number
- CN204327572U CN204327572U CN201420725410.8U CN201420725410U CN204327572U CN 204327572 U CN204327572 U CN 204327572U CN 201420725410 U CN201420725410 U CN 201420725410U CN 204327572 U CN204327572 U CN 204327572U
- Authority
- CN
- China
- Prior art keywords
- internal liner
- pump
- boss
- pump housing
- sealing device
- 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
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000005406 washing Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
Abstract
The utility model discloses a kind of axial subdivision two end supports centrifugal pump interstage sealing device, its feature structure be separate two impellers be contained on pump shaft by spacer tail end outer rim on impeller port ring is housed, between the choma outer and pump housing, internal liner is housed; Circumferentially being furnished with of internal liner prevents its slewing circle pin; It is characterized in that internal liner is provided with boss, the pump housing is provided with the groove with the boss Spielpassung on internal liner.Utilize the pressure that impeller produces, formed by boss and groove side and seal, serve good sealing effect, effectively prevent high-pressure medium washing away the pump housing and pump cover and rotor part, extend the working life of pump.This apparatus structure is simple, and easy to process, cost of production is low.
Description
One, technical field
The utility model relates to mechanical engineering pump class technical field, specifically a kind of axial subdivision two end supports centrifugal pump interstage sealing device.
Two, background technique
At present, China's axial subdivision two end supports centrifugal pump interstage sealing structure is varied, but wherein has the sealing effect of a lot of structure bad, causes that housing washes away seriously, working life is short; Also certain structures complexity not easily realizes, and causes the increase of cost of production and the reduction of work efficiency.
Three, summary of the invention
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide that a kind of cost is low, the axial subdivision two end supports centrifugal pump interstage sealing device of good sealing effect.
Realizing the technological scheme that the utility model object adopts is: this interstage sealing device is formed primarily of the pump housing, impeller, internal liner, straight pin, impeller port ring; The tail end outer rim separating two impellers be contained on pump shaft by spacer is equipped with impeller port ring, between the choma outer and pump housing, internal liner is housed; Circumferentially being furnished with of internal liner prevents its slewing circle pin; It is characterized in that internal liner is provided with boss, the pump housing is provided with the groove with the boss Spielpassung on internal liner.The pressure utilizing impeller to produce, by boss and groove lateral surface compressing, by coordinating formation sealing surface to stop liquid in inter-stage channelling, realizes excellent sealing.
The beneficial effects of the utility model are: utilize the pressure that impeller produces, formed by boss and groove side and seal, serve good sealing effect, effectively prevent high-pressure medium washing away the pump housing and pump cover and rotor part, extend the working life of pump.This apparatus structure is simple, and easy to process, cost of production is low.
Four, accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the sectional structure chart of the utility model axial subdivision two end supports centrifugal pump interstage sealing device.
In figure: 1. impeller, the 2. pump housing, 3. straight pin, 4. internal liner, 5. impeller port ring.
Five, embodiment
In the accompanying drawings, the utility model axial subdivision two end supports centrifugal pump interstage sealing device is formed primarily of the pump housing, impeller, internal liner, straight pin, impeller port ring; The tail end outer rim separating two impellers 1 be contained on pump shaft by spacer is equipped with impeller port ring 5, between the choma 5 outer and pump housing 2, internal liner 4 is housed; Circumferentially being furnished with of internal liner 4 prevents its slewing circle pin 3, and straight pin 3 one end is fixed on internal liner 4, and the other end is positioned at the pump housing; It is characterized in that internal liner 4 is provided with boss 6, the pump housing 2 is provided with the groove 7 with boss 6 Spielpassung on internal liner.Boss and groove are all processed, and both sides have certain processing degree of finish, slightly gap when boss and groove side-fit.
Claims (2)
1. an axial subdivision two end supports centrifugal pump interstage sealing device, seal arrangement is made up of the pump housing, impeller, internal liner, straight pin, impeller port ring; The tail end outer rim separating two impellers (1) be contained on pump shaft by spacer is equipped with impeller port ring (5), and choma (5) is equipped with internal liner (4) outward and between the pump housing (2); Circumferentially being furnished with of internal liner (4) prevents its slewing circle pin (3); It is characterized in that: internal liner (4) is provided with boss (6), the pump housing (2) is provided with the groove (7) with boss (6) Spielpassung on internal liner.
2. axial subdivision two end supports centrifugal pump interstage sealing device according to claim 1, it is characterized in that: boss (6) and groove (7) both sides have certain processing degree of finish, slightly gap when boss (6) and groove (7) side-fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420725410.8U CN204327572U (en) | 2014-11-20 | 2014-11-20 | Axial subdivision two end supports centrifugal pump interstage sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420725410.8U CN204327572U (en) | 2014-11-20 | 2014-11-20 | Axial subdivision two end supports centrifugal pump interstage sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204327572U true CN204327572U (en) | 2015-05-13 |
Family
ID=53163939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420725410.8U Expired - Fee Related CN204327572U (en) | 2014-11-20 | 2014-11-20 | Axial subdivision two end supports centrifugal pump interstage sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204327572U (en) |
-
2014
- 2014-11-20 CN CN201420725410.8U patent/CN204327572U/en not_active Expired - Fee Related
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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: 20150513 Termination date: 20171120 |