CN103062109A - Oil seal device for pump - Google Patents
Oil seal device for pump Download PDFInfo
- Publication number
- CN103062109A CN103062109A CN 201110324469 CN201110324469A CN103062109A CN 103062109 A CN103062109 A CN 103062109A CN 201110324469 CN201110324469 CN 201110324469 CN 201110324469 A CN201110324469 A CN 201110324469A CN 103062109 A CN103062109 A CN 103062109A
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- Prior art keywords
- maze
- sleeve
- wall
- groove
- bearing
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention relates to the technical field of centrifugal pumps, in particular to an oil seal device for a pump. The oil seal device for the pump comprises a pump shaft, a bearing and a bearing pressing cover. The oil seal device for the pump is characterized in that a maze sleeve, an O-shaped ring and a fastening nut are arranged on the pump shaft in a sleeved mode, a sealing groove is arranged on the circumference of the inner wall of the maze sleeve, at least two annular grooves are arranged on the circumference of the outer wall of the maze sleeve, a sealing platform is arranged at the end portion of the maze sleeve, an annular maze boss is arranged on the inner end face of the sealing platform, a groove matched with the annular maze boss is arranged on the outer end face of the bearing pressing cover, an air groove corresponding to the sealing groove of the inner wall of the maze sleeve is arranged on the inner wall of the bearing pressing cover, the O-shaped ring is embedded in the sealing groove of the inner wall of the maze sleeve, the inner end of the maze sleeve is fixedly connected with the bearing, the outer end of the maze sleeve is fixed with the fastening nut, the inner wall of the maze sleeve is in sealing connection with the pump shaft through the O-shaped ring, the outer wall of the maze sleeve is in clearance fit with the bearing pressing cover, and the sealing platform is in clearance fit with the groove of the bearing pressing cover through the annular maze boss. In an opposite running process, an air wall is formed, and lubricating oil leakage can be effectively stopped.
Description
Technical field
The present invention relates to the centrifugal pump technical field, specifically a kind of pump oil-sealing arrangement.
Background technique
Traditional single stage single-suction centrifugal pump type of shaft sealing generally adopts the structural type of outside framework oil seal, outside framework oil seal is installed between bearing gland and the dust pan, its deficiency is: 1, dust pan rotate together with axle and bearing gland do not turn, cause that relative friction is arranged between them two, affect the shaft seal effect, sealability is low; Also relatively rotate between 2 outside framework oil seals and the bearing gland, cause easily the series of problems such as heating.
Summary of the invention
The objective of the invention is to solve above-mentioned the deficiencies in the prior art, provide a kind of rational in infrastructure, shaft seal is effective, without friction, without the pump oil-sealing arrangement that leaks, sealability is high.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of pump oil-sealing arrangement, be provided with pump shaft, bearing, bearing gland, it is characterized in that being provided with labyrinth bush, O type circle and locknut, labyrinth bush inwall circumference is provided with sealed groove, the outer wall circumference is provided with at least two annular grooves, labyrinth bush one end is provided with the sealing platform, sealing platform interior edge face is provided with ring-type labyrinth boss, the bearing gland exterior edge face is provided with the air grooves that matches with annular groove, O type circle is embedded in the sealed groove of labyrinth bush inwall, labyrinth bush is inner to be fixedly connected with bearing, prevent oil leak, outer end and locknut fix, and inwall is connected with shaft seal through O type circle, outer wall and bearing gland Spielpassung, the sealing platform is through the groove Spielpassung of ring-type labyrinth boss and bearing gland, so that labyrinth bush does not produce friction with relative running between the bearing gland, in relative operation process, form air wall, effectively stop oil leak.
The present invention is owing to adopt said structure, have rational in infrastructure, shaft seal is effective, without friction, without leak, the sealability advantages of higher.
Description of drawings
Accompanying drawing is structural representation of the present invention.
Reference character: pump shaft 1, bearing 2, bearing gland 3, labyrinth bush 4, O type circle 5, locknut 6.
Embodiment
The present invention is further described below in conjunction with accompanying drawing:
As shown in drawings, a kind of pump oil-sealing arrangement, be provided with pump shaft 1, bearing 2, bearing gland 3, it is characterized in that being provided with labyrinth bush 4, O type circle 5 and locknut 6, labyrinth bush 4 inwall circumference are provided with sealed groove, the outer wall circumference is provided with at least two annular grooves, labyrinth bush 4 one ends are provided with the sealing platform, sealing platform interior edge face is provided with ring-type labyrinth boss, bearing gland 3 exterior edge faces are provided with the air grooves that matches with annular groove, O type circle 5 is embedded in the sealed groove of labyrinth bush 4 inwalls, and labyrinth bush 4 the inners are fixedly connected with bearing 2, prevent oil leak, outer end and locknut 6 fix, inwall is tightly connected through O type circle 5 and pump shaft 1, outer wall and bearing gland 3 Spielpassung, and the sealing platform is through the groove Spielpassung of ring-type labyrinth boss and bearing gland 3, so that labyrinth bush 4 does not produce friction with relative running between the bearing gland 3, in relative operation process, form air wall, effectively stop oil leak.
The present invention in the running, because the relative running of formation between labyrinth bush 4 and the bearing gland 3, form air wall between gap, annular groove and the air grooves between labyrinth bush 4 and the bearing gland 3, effectively stop the leakage of lubricant oil, and seal between 5 pairs of labyrinth bush 4 of O type circle of inlaying by labyrinth bush 4 inwalls and the pump shaft 1, another approach that prevents lubricant oil leaks, and reaches the purpose that shaft seal is effective, sealability is high.
The present invention is owing to adopt said structure, have rational in infrastructure, shaft seal is effective, without friction, without leak, the sealability advantages of higher.
Claims (1)
1. pump oil-sealing arrangement, be provided with pump shaft, bearing, bearing gland, it is characterized in that being arranged with on the pump shaft labyrinth bush, O type circle and locknut, labyrinth bush inwall circumference is provided with sealed groove, the outer wall circumference is provided with at least two annular grooves, labyrinth bush one end is provided with the sealing platform, sealing platform interior edge face is provided with ring-type labyrinth boss, the bearing gland exterior edge face is provided with the groove that matches with annular groove, inwall is provided with the air grooves corresponding with the sealed groove of labyrinth bush inwall, O type circle is embedded in the sealed groove of labyrinth bush inwall, and labyrinth bush is inner to be fixedly connected with bearing, prevents oil leak, outer end and locknut fix, inwall is connected with shaft seal through O type circle, outer wall and bearing gland Spielpassung, and the sealing platform is through the groove Spielpassung of ring-type labyrinth boss and bearing gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110324469 CN103062109A (en) | 2011-10-24 | 2011-10-24 | Oil seal device for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110324469 CN103062109A (en) | 2011-10-24 | 2011-10-24 | Oil seal device for pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103062109A true CN103062109A (en) | 2013-04-24 |
Family
ID=48104913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110324469 Pending CN103062109A (en) | 2011-10-24 | 2011-10-24 | Oil seal device for pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103062109A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106230194A (en) * | 2016-08-30 | 2016-12-14 | 中车株洲电机有限公司 | A kind of development machine |
| CN106930972A (en) * | 2017-03-16 | 2017-07-07 | 武汉船用机械有限责任公司 | A kind of associated sealing arrangement for bearings for Cargo Oil Pump |
| CN109888965A (en) * | 2019-04-26 | 2019-06-14 | 南通森玛特电机有限公司 | Bearing internal pressure cover attaching structure on motor |
-
2011
- 2011-10-24 CN CN 201110324469 patent/CN103062109A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106230194A (en) * | 2016-08-30 | 2016-12-14 | 中车株洲电机有限公司 | A kind of development machine |
| CN106930972A (en) * | 2017-03-16 | 2017-07-07 | 武汉船用机械有限责任公司 | A kind of associated sealing arrangement for bearings for Cargo Oil Pump |
| CN109888965A (en) * | 2019-04-26 | 2019-06-14 | 南通森玛特电机有限公司 | Bearing internal pressure cover attaching structure on motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130424 |