CN202117975U - Labyrinth seal structure of motor bearing of centrifugal pump - Google Patents
Labyrinth seal structure of motor bearing of centrifugal pump Download PDFInfo
- Publication number
- CN202117975U CN202117975U CN2011202012575U CN201120201257U CN202117975U CN 202117975 U CN202117975 U CN 202117975U CN 2011202012575 U CN2011202012575 U CN 2011202012575U CN 201120201257 U CN201120201257 U CN 201120201257U CN 202117975 U CN202117975 U CN 202117975U
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- CN
- China
- Prior art keywords
- labyrinth seal
- bearing
- centrifugal pump
- water blocking
- seal structure
- 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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Abstract
The utility model relates to a labyrinth seal structure of a motor bearing of a centrifugal pump, which comprises a pump body for connecting the centrifugal pump and an integrated cover of a motor. A bearing is arranged on the integrated cover, a motor shaft of the centrifugal pump is arranged in the bearing, and the lower end of the motor shaft is sealed with the lower portion of the integrated cover by mechanical seal. The labyrinth seal structure of the motor bearing of the centrifugal pump is characterized in that a water blocking step is arranged at the sealing position between the upper portion of the integrated cover and the motor shaft, the outer side of the lower end of the water blocking step is provided with a labyrinth seal groove, a matched labyrinth seal groove is arranged on the integrated cover at the position corresponding to the labyrinth seal groove at the lower end of the water blocking step, and the matched labyrinth seal groove and the labyrinth seal groove at the lower end of the water blocking step form the labyrinth seal structure together. The labyrinth seal structure is composite direct-connection type labyrinth seal structure. The labyrinth seal structure of the motor bearing of the centrifugal pump has the advantages of being convenient to process, install and operate, free of friction, low in power consumption and long in service life. The step is arranged on a section of shaft between the mechanical seal and the bearing and used for primary water blocking, and the composite direct-connection type labyrinth seal grooves are used for secondary water blocking and dust prevention, thereby achieving double water blocking and sealing and being good in sealing effect.
Description
Technical field
The utility model relates to the correlative technology field of centrifugal pump sealing configuration, is specifically related to a kind of centrifugal pump motor bearing labyrinth structure.
Background technique
The structure of existing water pump bearing dash seal arrangement is as shown in Figure 1; Water pump bearing dash seal arrangement is on axle, to be provided with a rubber stop hydrosphere, and the rubber shelves hydrosphere of this pump motor bearing dash seal arrangement is prone to aging, causes medium (water) to get in the bearing support along axle; Poor reliability; Bearing shortening in working life, and because pump cover and electric motor end cap are disjunctors, extremely inconvenient when water retaining ring is installed.
The model utility content
To above-mentioned defective; The purpose of the utility model provides a kind of centrifugal pump motor bearing labyrinth structure; To solve easy the wearing out of rubber shelves hydrosphere that traditional water pump motor bearing dash seal arrangement exists; Cause medium to get in the bearing support, poor reliability, the technical problem of bearing shortening in working life and water retaining ring inconvenient installation along axle.
For realizing above-mentioned purpose, the technological scheme below the utility model has adopted:
A kind of centrifugal pump motor bearing labyrinth structure; Comprise and be used to connect the pump housing of centrifugal pump and the conjoined cover of motor; Described conjoined cover is provided with bearing, and the motor shaft of centrifugal pump is located in the described bearing, and the lower end of said motor shaft is through the lower seal of mechanical seal and said conjoined cover; The top of said conjoined cover and the sealing part of motor shaft are provided with the dash step; Described dash step lower outside is provided with the labyrinth seal groove, and the corresponding position of labyrinth seal groove with said dash step lower end on the described conjoined cover is provided with the labyrinth seal groove that is complementary, and forms labyrinth seal structure with the labyrinth seal groove of said dash step lower end; Described labyrinth seal structure is a composite straight-through type labyrinth seal structure.
The advantage of the utility model is: easy to process, be convenient to fitting operation; Owing on one section axle in the middle of mechanical seal and the bearing, be provided with step, as first dash effect; Because composite straight-through type maze trough, as dash and dustproof effect once more.Dual dash sealing, good sealing effect does not have friction, and power consumption is little, long service life.
Description of drawings
Fig. 1 is the structural representation of existing water pump bearing dash seal arrangement;
Fig. 2 is the structural representation of the utility model centrifugal pump motor bearing labyrinth structure;
Fig. 3 is the partial enlarged drawing at A place among Fig. 2.
Embodiment
Be described in detail below in conjunction with the preferred embodiment of accompanying drawing, but the utility model is not restricted to these embodiments the utility model.The utility model is contained substituting of making on any marrow and scope at the utility model, modification, equivalent method and scheme.Understand for the public is had completely the utility model, in following the utility model preferred embodiment, specified concrete details, and do not had the description of these details also can understand the utility model fully for a person skilled in the art.
A kind of centrifugal pump motor bearing labyrinth structure, as shown in Figures 2 and 3, the pump housing 1 connects through conjoined cover 2 with motor 4; Conjoined cover 2 is provided with bearing 3; Be provided with axle 5 in the bearing 3, be provided with nut 8, impeller 7, mechanical seal 6, bearing 3 and motor 4 successively on the axle 5, the main structure characteristics are; On one section axle in the middle of mechanical seal 6 and the bearing 3, be provided with step 9; Be provided with maze trough 11 at step 9 one ends, the maze trough 10 that the maze trough 11 of while on setting on the conjoined cover 2 and axle 5 is complementary is formed composite straight-through type maze trough jointly.Owing on one section axle 5 in the middle of mechanical seal 6 and the bearing 3, be provided with step 9, as first dash effect; Because composite straight-through type maze trough 10,11, as dash and dustproof effect once more.Adopted dual dash sealing, its sealing effect is better.
The utility model preferred embodiment just is used for helping to set forth the utility model.Preferred embodiment does not have all details of detailed descriptionthe, does not limit this model utility yet and is merely described embodiment.Obviously, according to the content of this specification, can do a lot of modifications and variation.These embodiments are chosen and specifically described to this specification, is principle and practical application in order to explain the utility model better, thereby person skilled can be utilized the utility model well under making.The utility model only receives the restriction of claims and four corner and equivalent.
Claims (1)
1. centrifugal pump motor bearing labyrinth structure; Comprise and be used to connect the pump housing of centrifugal pump and the conjoined cover of motor; Described conjoined cover is provided with bearing; The motor shaft of centrifugal pump is located in the described bearing; The lower end of said motor shaft is characterized in that through the lower seal of mechanical seal and said conjoined cover: the top of said conjoined cover and the sealing part of motor shaft are provided with the dash step, and described dash step lower outside is provided with the labyrinth seal groove; The corresponding position of labyrinth seal groove with said dash step lower end on the described conjoined cover is provided with the labyrinth seal groove that is complementary, and forms labyrinth seal structure with the labyrinth seal groove of said dash step lower end; Described labyrinth seal structure is a composite straight-through type labyrinth seal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202012575U CN202117975U (en) | 2011-06-15 | 2011-06-15 | Labyrinth seal structure of motor bearing of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202012575U CN202117975U (en) | 2011-06-15 | 2011-06-15 | Labyrinth seal structure of motor bearing of centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202117975U true CN202117975U (en) | 2012-01-18 |
Family
ID=45459044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202012575U Expired - Fee Related CN202117975U (en) | 2011-06-15 | 2011-06-15 | Labyrinth seal structure of motor bearing of centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202117975U (en) |
-
2011
- 2011-06-15 CN CN2011202012575U patent/CN202117975U/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 |
Granted publication date: 20120118 Termination date: 20160615 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |