CN201739218U - Sealing device for shaft end of chemical centrifugal pump - Google Patents
Sealing device for shaft end of chemical centrifugal pump Download PDFInfo
- Publication number
- CN201739218U CN201739218U CN2010202053513U CN201020205351U CN201739218U CN 201739218 U CN201739218 U CN 201739218U CN 2010202053513 U CN2010202053513 U CN 2010202053513U CN 201020205351 U CN201020205351 U CN 201020205351U CN 201739218 U CN201739218 U CN 201739218U
- Authority
- CN
- China
- Prior art keywords
- sealing device
- centrifugal pump
- impeller
- shaft end
- seal
- 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 abstract description 17
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 230000002457 bidirectional effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 208000033999 Device damage Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a sealing device for a shaft end of a chemical centrifugal pump. The sealing device comprises a shaft, a lock nut and an impeller; an axial sealing device is arranged among the lock nut, the shaft and the impeller; and a radial sealing device is also arranged among the lock nut, the shaft and the impeller. Due to the combination of the axial sealing device and the radial sealing device, the sealing device of the utility model changes the unidirectional face seal into a bidirectional linear seal which is more effective and practical, thereby solving the sealing problem, and slowing down the seal failure of the equipment caused by temperature differences.
Description
Technical field
The utility model relates to a kind of seal arrangement of centrifugal pump, especially relates to a kind of seal arrangement of shaft end of chemical centrifugal pump.
Background technique
Use the large centrifugal pump in the chemical machinery, but because the impeller of chemical centrifugal pump back of the body cap generally adopts plane axial seal, in use outside cause such as Yin Wendu and friction causes shaft end seal to lose efficacy, thereby cause material between impeller and axle, to leak, cause device damage, and befouling environment.
The model utility content
The utility model has designed a kind of seal arrangement of shaft end of chemical centrifugal pump, and the technical problem of its solution is in big flow chemical industry is centrifugal, because process conditions cause axial seal to be lost efficacy through regular meeting.
In order to solve the technical problem of above-mentioned existence, the utility model has adopted following scheme:
A kind of seal arrangement of shaft end of chemical centrifugal pump comprises axle, back of the body cap and impeller, has an axial sealer between described back of the body cap, axle and the impeller, also has an apex combustion seal between described back of the body cap, axle and the impeller.
Further, described apex combustion seal comprises a groove and an O type circle, and described O type circle is embedded in the described groove, and described groove is positioned at described back of the body cap root.
Further, the cross section of described groove is the square of a length of side 2mm.
The seal arrangement of this shaft end of chemical centrifugal pump is compared with the conventional seals device, have following beneficial effect: the utility model is owing to adopted the combination of axial sealer and apex combustion seal, make unidirectional face seal become the bidirectional lines sealing, sealing is more effective like this, make sealing more practical, thereby also solved sealing problem, slowed down the seal failure that equipment causes because of difference variation again.
Description of drawings
Fig. 1: the sectional view of the seal arrangement of the utility model shaft end of chemical centrifugal pump.
Description of reference numerals:
The 1-impeller; The 2-axle; 3-O type circle; 4-carries on the back cap; The 5-groove.
Embodiment
Below in conjunction with Fig. 1, the utility model is described further:
A kind of seal arrangement of shaft end of chemical centrifugal pump comprises axle 2, back of the body cap 4 and impeller 1, has an axial sealer between described back of the body cap 4, axle 2 and the impeller 1, also has an apex combustion seal between described back of the body cap 4, axle 2 and the impeller 1.Described apex combustion seal comprises a groove 5 and an O type circle 3, and described O type circle 3 is embedded in the described groove 5, and described groove 5 is positioned at described back of the body cap 4 roots.The utility model is owing to adopted the combination of axial sealer and apex combustion seal, make unidirectional face seal become the bidirectional lines sealing, sealing is more effective like this, makes sealing more practical, thereby also solved sealing problem, slowed down the seal failure that equipment causes because of difference variation again.
The cross section of described groove 5 is the square of a length of side 2mm.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obvious realization of the present utility model is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present utility model and technological scheme to carry out; or design of the present utility model and technological scheme are directly applied to other occasion without improving, all in protection domain of the present utility model.
Claims (3)
1. the seal arrangement of a shaft end of chemical centrifugal pump, comprise axle (2), back of the body cap (4) and impeller (1), there is an axial sealer between described back of the body cap (4), axle (2) and the impeller (1), it is characterized in that: also have an apex combustion seal between described back of the body cap (4), axle (2) and the impeller (1).
2. according to the seal arrangement of the described shaft end of chemical centrifugal pump of claim 1, it is characterized in that: described apex combustion seal comprises a groove (5) and an O type circle (3), described O type circle (3) is embedded in the described groove (5), and described groove (5) is positioned at described back of the body cap (4) root.
3. according to the seal arrangement of the described shaft end of chemical centrifugal pump of claim 2, it is characterized in that: the cross section of described groove (5) is the square of a length of side 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202053513U CN201739218U (en) | 2010-05-27 | 2010-05-27 | Sealing device for shaft end of chemical centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202053513U CN201739218U (en) | 2010-05-27 | 2010-05-27 | Sealing device for shaft end of chemical centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201739218U true CN201739218U (en) | 2011-02-09 |
Family
ID=43554494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202053513U Expired - Fee Related CN201739218U (en) | 2010-05-27 | 2010-05-27 | Sealing device for shaft end of chemical centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201739218U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832289A (en) * | 2010-05-27 | 2010-09-15 | 蓝星化工有限责任公司 | Sealing device for shaft end of chemical centrifugal pump |
-
2010
- 2010-05-27 CN CN2010202053513U patent/CN201739218U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832289A (en) * | 2010-05-27 | 2010-09-15 | 蓝星化工有限责任公司 | Sealing device for shaft end of chemical centrifugal pump |
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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: 20110209 Termination date: 20130527 |