CN203627293U - Sealing structure of pump shaft - Google Patents
Sealing structure of pump shaft Download PDFInfo
- Publication number
- CN203627293U CN203627293U CN201420002740.4U CN201420002740U CN203627293U CN 203627293 U CN203627293 U CN 203627293U CN 201420002740 U CN201420002740 U CN 201420002740U CN 203627293 U CN203627293 U CN 203627293U
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- CN
- China
- Prior art keywords
- shaft
- pump
- sleeve
- impeller
- shaft sleeve
- 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 fluid machinery, specifically a sealing structure of a pump shaft. The sealing structure comprises a pump body, a pump cover, an impeller, an impeller nut, mechanical seal and a pump shaft, wherein the sealing structure is provided with a protection shaft sleeve, a sealing mat and an O-shaped ring, the protection shaft sleeve is formed by connecting a locating shoulder sleeve with a sleeve coaxially and fixedly, the protection shaft sleeve is fixedly sleeved on the fixing shaft section of the mechanical seal of the pump shaft by the sleeve and axially connected with an impeller installing shaft section of the pump shaft by the locating shoulder sleeve of the protection shaft sleeve, the internal wall of the mechanical seal is hermetically connected with the protection shaft sleeve by the O-shaped ring and the external wall is hermetically connected with the pump cover, the impeller is hermetically connected with the protection shaft sleeve by the sealing mat so that medium can be prevented from leaking on the shaft by the gap between the impeller nut and the impeller effectively, the pump shaft is ensured to no contact with the medium, meanwhile, the medium can be prevented from leaking, and the sealing structure has the advantages of excellent sealing performance, low manufacturing cost, quick and convenient replacement, etc.
Description
Technical field
The utility model relates to fluid machinery technical field, specifically a kind of pump shaft sealing device of single stage centrifugal pump.
Background technique
At present, in pump design, flow passage components mainly comprise the pump housing, pump cover, impeller, impeller nut, mechanical seal and pump shaft, described impeller is located in the inner chamber of the pump housing, pump shaft is fixedly connected with impeller through impeller nut with pump cover through the pump housing, described pump cover is connected with shaft seal through mechanical seal, pump cover is through clamping bolt and pump housing fixed seal connection, after medium enters the pump housing from pump inlet, through impeller transmission, most of medium is transported to exit position by runner, part medium can enter Seal cage through impeller back, finally sealed by mechanical seal through axle, will make like this axial length phase be immersed in medium.Therefore,, in the time carrying Korrosionsmedium, axle need to adopt higher material configuration to meet, and has so not only improved manufacture cost, and has increased an easily worn part.
Summary of the invention
The purpose of this utility model is to solve above-mentioned the deficiencies in the prior art, a kind of novel structure, convenient disassembly is provided, effectively prevents that axle burn into from improving the pump shaft seal structure of pump bulk life time.
The utility model solves the technological scheme that its technical problem adopts:
A kind of pump shaft seal structure, comprise the pump housing, pump cover, impeller, impeller nut, mechanical seal and pump shaft, it is characterized in that being provided with protective shaft sleeve, sealing gasket and O type circle, described protective shaft sleeve is to be coaxially formed by fixedly connecting by location shoulder cover and sleeve, described protective shaft sleeve is the fixing shaft part of mechanical seal at pump shaft through sleeve fixed cover, and be connected with the impeller installation shaft part axial restraint of pump shaft through the location of protective shaft sleeve shoulder cover, mechanical seal inwall is tightly connected through O type circle and protective shaft sleeve, outer wall and pump cover are tightly connected, described impeller is tightly connected through sealing gasket and protective shaft sleeve, effectively prevent that medium from leaking on axle by the gap between impeller nut and impeller, fully guaranteed pump shaft not can with medium contact, can prevent dielectric leakage simultaneously.
The utility model is owing to adopting said structure, has the advantages such as good seal performance, low cost of manufacture, replacing be convenient and swift.
accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Reference character: impeller nut 1, impeller 2, sealing gasket 3, protective shaft sleeve 4, mechanical seal 5, pump shaft 6, the pump housing 7, pump cover 8.
Embodiment
As shown in drawings, a kind of pump shaft seal structure, comprise the pump housing 7, pump cover 8, impeller 2, impeller nut 1, mechanical seal 5 and pump shaft 6, annexation and the impeller 2 of the described pump housing 7 and pump cover 8, the annexation of impeller nut 1 and pump shaft 6 is same as the prior art, this does not repeat, it is characterized in that being provided with protective shaft sleeve 4, sealing gasket 3 and O type circle, described protective shaft sleeve 4 is to be coaxially formed by fixedly connecting by location shoulder cover and sleeve, described protective shaft sleeve 4 is the fixing shaft part of mechanical seal 5 at pump shaft 6 through sleeve fixed cover, and be connected with the impeller installation shaft part axial restraint of pump shaft 6 through the location of protective shaft sleeve 4 shoulder cover, mechanical seal 5 inwalls are tightly connected through O type circle and protective shaft sleeve 4, outer wall and pump cover 6 are tightly connected, described impeller 2 is tightly connected through sealing gasket 3 and protective shaft sleeve 4, effectively prevent that medium from leaking on axle by the gap between impeller nut 1 and impeller 2, fully guaranteed pump shaft 6 not can with medium contact, can prevent dielectric leakage simultaneously, like this, in the time carrying Korrosionsmedium, axle can be selected lower material, reduce manufacture cost, it is convenient that protective shaft sleeve 4 is changed, manufacture simple, coordinate with O RunddichtringO, form a set of reliable shaft seal structure, the utility model is owing to adopting said structure, there is good seal performance, low cost of manufacture, change the advantages such as convenient and swift.
Claims (1)
1. a pump shaft seal structure, comprise the pump housing, pump cover, impeller, impeller nut, mechanical seal and pump shaft, it is characterized in that being provided with protective shaft sleeve, sealing gasket and O type circle, described protective shaft sleeve is to be coaxially formed by fixedly connecting by location shoulder cover and sleeve, described protective shaft sleeve is the fixing shaft part of mechanical seal at pump shaft through sleeve fixed cover, and be connected with the impeller installation shaft part axial restraint of pump shaft through the location of protective shaft sleeve shoulder cover, mechanical seal inwall is tightly connected through O type circle and protective shaft sleeve, outer wall and pump cover are tightly connected, and described impeller is tightly connected through sealing gasket and protective shaft sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420002740.4U CN203627293U (en) | 2014-01-03 | 2014-01-03 | Sealing structure of pump shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420002740.4U CN203627293U (en) | 2014-01-03 | 2014-01-03 | Sealing structure of pump shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203627293U true CN203627293U (en) | 2014-06-04 |
Family
ID=50813776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420002740.4U Expired - Fee Related CN203627293U (en) | 2014-01-03 | 2014-01-03 | Sealing structure of pump shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203627293U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757549A (en) * | 2018-08-02 | 2018-11-06 | 山东寿光鲁清石化有限公司 | High-temperature pump and sealing mechanism |
| CN112412867A (en) * | 2020-11-13 | 2021-02-26 | 九江德福科技股份有限公司 | Pump shaft sealing gasket of dirty liquid pump |
-
2014
- 2014-01-03 CN CN201420002740.4U patent/CN203627293U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757549A (en) * | 2018-08-02 | 2018-11-06 | 山东寿光鲁清石化有限公司 | High-temperature pump and sealing mechanism |
| CN112412867A (en) * | 2020-11-13 | 2021-02-26 | 九江德福科技股份有限公司 | Pump shaft sealing gasket of dirty liquid pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG TOP PUMPS CO., LTD. Free format text: FORMER NAME: SHANDONG SHUANGLUN TAOPU PUMP INDUSTRY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 264200 Weihai economic and Technological Development Zone, Shandong Road, No. 1 Patentee after: Shandong Tao Pu pump industry limited company Address before: 264200 Weihai economic and Technological Development Zone, Shandong Road, No. 1 Patentee before: SHANDONG SHUANGLUN TOP PUMPS INDUSTRY CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20160103 |