CN2859029Y - Dual-series mechanical sealing leakage prevention device - Google Patents
Dual-series mechanical sealing leakage prevention device Download PDFInfo
- Publication number
- CN2859029Y CN2859029Y CN 200520047575 CN200520047575U CN2859029Y CN 2859029 Y CN2859029 Y CN 2859029Y CN 200520047575 CN200520047575 CN 200520047575 CN 200520047575 U CN200520047575 U CN 200520047575U CN 2859029 Y CN2859029 Y CN 2859029Y
- Authority
- CN
- China
- Prior art keywords
- pump
- single face
- face seal
- pump shaft
- single mechanical
- 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
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present utility model relates to an anti-leakage device with two serial mechanical seals which includes a pump shaft, an impeller, a bearing gland, a pump cover, two single face mechanical seals. It is characterized by that one single face mechanical seal is set aside the near impeller of said pump shaft, one end of said single face mechanical seal props the inner end face of said bearing gland, another end of the single face mechanical seal is fixed by the retainer ring locking in the annular groove of said pump shaft. Another single face mechanical seal is set aside the near pump cover of said pump shaft, one end of the single face mechanical seal props the inner hole of the pump cover, another end of single face mechanical seal props the hub end of the impeller. The advantage of the present utility model is: two single face mechanical seals can work independently to disconnect pump and motor completely so as to provide double protection for submersible motor.
Description
Technical field
The utility model relates to a kind of leakage preventer, particularly a kind of twice tandem mechanical seal leakage preventer.
Background technique
The axle envelope of present original proof submersible sand discharging pump is to adopt double mechanical seal, because double mechanical seal is the sealing of pushing type, its structure is many spring structures, complex structure, and working pressure is opposite with the working pressure of pump, needs the outer sealing liquid system that supplies, and causes the inside pressurized of spring easily, cause dynamic and static ring to separate, cause the leakage of medium.
Summary of the invention
The purpose of this utility model is that the axle envelope of proof submersible sand discharging pump in the solution prior art is to adopt the existing the problems referred to above of double mechanical seal, and a kind of twice tandem mechanical seal leakage preventer is provided.The utility model designs a kind of twice tandem mechanical seal leakage preventer, comprise pump shaft, impeller, bearing gland, pump cover, single mechanical end face seal, it is characterized in that: on pump shaft, be with single mechanical end face seal, single mechanical end face seal one end cylindrical cover withstands on the interior hole end surface of pump cover, the other end of single mechanical end face seal peaks at the wheel hub end face of impeller, paraxial pressure cap side is with single mechanical end face seal on pump shaft, one end cylindrical cover of single mechanical end face seal withstands on the interior hole end surface of bearing gland, and the other end of single mechanical end face seal is fixed by the back-up ring in the circular groove that is stuck in pump shaft.The utility model has the advantages that the separate work of twice single mechanical end face seal, pump and motor seal ground are separated, for submersible motor provides duplicate protection.
Description of drawings
Below in conjunction with drawings and Examples the utility model is elaborated,
Accompanying drawing is a structural representation of the present utility model,
Embodiment
Comprise pump shaft 1, impeller 2, bearing gland 3, pump cover 4, single mechanical end face seal 5 among the figure, it is characterized in that: on pump shaft 1, be with single mechanical end face seal 5, single mechanical end face seal 5 one end cylindrical covers withstand on the interior hole end surface of pump cover 4, the other end of single mechanical end face seal 5 peaks at the wheel hub end face of impeller 2, paraxial pressure cap 3 sides are with single mechanical end face seal 6 on pump shaft 1, one end cylindrical cover of single mechanical end face seal 6 withstands on the interior hole end surface of bearing gland 3, and the other end of single mechanical end face seal 6 is fixing by 7 back-up ring in the circular groove that is stuck in pump shaft 18.
The axle of original proof submersible sand discharging pump is sealed by double mechanical seal, change the single mechanical end face seal 5,6 of twice series connection into, because single mechanical end face seal 5,6 is simple in structure, easy disassembling, need not outer for the sealing liquid system, and working pressure is consistent with the working pressure of pump, and the reliability in the use improves.Twice single mechanical end face seal 5,6 is separate work, pump and motor seal ground is separated, for submersible motor provides duplicate protection.
Claims (1)
1, a kind of twice tandem mechanical seal leakage preventer, comprise pump shaft, impeller, bearing gland, pump cover, single mechanical end face seal, it is characterized in that: on pump shaft, be with single mechanical end face seal, single mechanical end face seal one end cylindrical cover withstands on the interior hole end surface of pump cover, the other end of single mechanical end face seal peaks at the wheel hub end face of impeller, paraxial pressure cap side is with single mechanical end face seal on pump shaft, one end cylindrical cover of single mechanical end face seal withstands on the interior hole end surface of bearing gland, and the other end of single mechanical end face seal is fixed by the back-up ring in the circular groove that is stuck in pump shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520047575 CN2859029Y (en) | 2005-12-15 | 2005-12-15 | Dual-series mechanical sealing leakage prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520047575 CN2859029Y (en) | 2005-12-15 | 2005-12-15 | Dual-series mechanical sealing leakage prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2859029Y true CN2859029Y (en) | 2007-01-17 |
Family
ID=37611888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520047575 Expired - Fee Related CN2859029Y (en) | 2005-12-15 | 2005-12-15 | Dual-series mechanical sealing leakage prevention device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2859029Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152405A (en) * | 2017-04-28 | 2017-09-12 | 湖北富升智能装备股份有限公司 | A kind of centrifugal pump directly driven without frame permagnetic synchronous motor |
| CN108005914A (en) * | 2017-12-30 | 2018-05-08 | 无锡强工机械工业有限公司 | Pumped without reliable float is blocked |
-
2005
- 2005-12-15 CN CN 200520047575 patent/CN2859029Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152405A (en) * | 2017-04-28 | 2017-09-12 | 湖北富升智能装备股份有限公司 | A kind of centrifugal pump directly driven without frame permagnetic synchronous motor |
| CN108005914A (en) * | 2017-12-30 | 2018-05-08 | 无锡强工机械工业有限公司 | Pumped without reliable float is blocked |
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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: 20070117 Termination date: 20101215 |