CN202746273U - Sealing structure of centrifugal pump - Google Patents
Sealing structure of centrifugal pump Download PDFInfo
- Publication number
- CN202746273U CN202746273U CN 201220364943 CN201220364943U CN202746273U CN 202746273 U CN202746273 U CN 202746273U CN 201220364943 CN201220364943 CN 201220364943 CN 201220364943 U CN201220364943 U CN 201220364943U CN 202746273 U CN202746273 U CN 202746273U
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- China
- Prior art keywords
- framework oil
- pump
- sealing structure
- seal
- centrifugal pump
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- 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
A sealing structure of a centrifugal pump comprises a pump shell, a baffle ring and a shaft sleeve, and is characterized in that the shaft sleeve is arranged on a pump shaft inside the pump shell, the shaft sleeve is sequentially provided with the baffle ring, a plurality of framework oil seals and a spacer from left to right and penetrates through a back cover through a screw to be linked with the pump shell. The sealing structure of the centrifugal pump is stable in service life compared with a mechanical seal, when the sealing structure is used for a certain period of time and has slight leakage, the back cover can be pressed, and the sealing structure can continue to be used. Replacement cost of the framework oil seal is just about one tenth of the price of the mechanical seal. Compared with a packing seal, due to the fact that the framework oil seal is in a crescent face contact mode, electric energy can be saved by 5%-10%.
Description
Technical field:
The utility model relates to the sealing configuration of centrifugal pump.It is applicable to the pumps such as IS, S, SH, with 2～4 outside framework oil seals, selects the outside framework oil seal of unlike material according to the temperature of medium, pH value, proportion etc., replaces all built-in type mechanical seals and packing seal.
Background technique:
In chemical enterprise, be widely used the centrifugal pump of various models, it is particularly important that the selection of centrifugal pump sealing means just seems.Its not only economy but also environmental protection is stopped the run, drip, leak phenomenon of water pump.When present IS, S, SH centrifugal pump were used for sewage or contain the more fluid of impurity carrying, mechanical seal very easily damaged, and the mechanical seal device expense is high, dismounting is difficult, working life is short, is those skilled in the art's difficult problems to be solved always.
Summary of the invention:
It is a kind of that the purpose of this utility model will provide exactlyThe sealing configuration of centrifugal pump, it can overcome existing machinery sealing and the existing above problem of packing seal.The purpose of this utility model is to realize like this, the sealing configuration of centrifugal pump, comprise pump case, baffle ring, axle sleeve, it is characterized in that: the pump shaft in pump case is provided with axle sleeve, be disposed with from left to right baffle ring, some outside framework oil seals, pad on the axle sleeve, and pass bonnet by screw and connect with pump case.The utility model is stable than mechanical seal working life, if when after using certain hour slight leakage being arranged, can compress bonnet, continues to use.The outside framework oil seal replacement cost only is about 1/10th of mechanical seal price.Compare with packing seal, because outside framework oil seal is new lunar surface contact form, but saving power 5%～10%.The utility model has solved existing machine and has been sealed the problem that easily produces irregular abnormal damage, simultaneously because outside framework oil seal and axle sleeve are new lunar surface contact forms, and area of contact reduces greatly than packing seal, so wearing and tearing have obtained effective control with frictional heat.
Description of drawings;
Fig. 1 is the utility model structural representation;
1. pump case, 2. baffle ring, 3. axle sleeve, 4. outside framework oil seal, 5. pad, 6. bonnet, 7. pump shaft.
Embodiment: the utility model is described in further detail below in conjunction with accompanying drawing;
The sealing configuration of centrifugal pump, comprise pump case 1, baffle ring 2, axle sleeve 3, it is characterized in that: the pump shaft 7 in pump case 1 is provided with axle sleeve 3, is disposed with from left to right baffle ring 2, some outside framework oil seals 4, pad 5 on the axle sleeve 3, and passes bonnet 6 by screw and connect with pump case 1.During implementation, machining axle sleeve 3 internal-and external diameter surface finishmentes are Ra0.8, and cylindrical degree of finish high energy reduces outside framework oil seal 4 wearing and tearing, and internal diameter degree of finish high energy guarantees axle sleeve 3 and 7 intact cooperations of pump shaft.Pump shaft 7 axial floats are controlled at 0.03mm～0.05mm.Axle sleeve 3 is enclosed within on the pump shaft 7, and axle sleeve 3 is interference fit with pump shaft 7, and interference measures 0.01～0.04mm, and the material of axle sleeve 3 is selected according to medium.As shown in the figure, some outside framework oil seals 4 are installed in Seal cage; The concrete quantity of described outside framework oil seal 4 is to choose according to actual conditions, and outside framework oil seal is interior through baffle ring 2, pad 5, bonnet 6 realization axially locating and pre-pressings at pump case 1.The sealing principle of outside framework oil seal 4 is among outside framework oil seal 4 and the mechanical part figure to be between the axle sleeve 3, the liquid film that the oil sealing cutting edge of existence is controlled.The formed liquid film of outside framework oil seal 4 and mechanical part has the characteristic of fluid lubrication, and there is certain tension force in the surface, and the part that contacts with air of liquid film can form the leakage that new lunar surface prevents liquid medium under stiffness like this.When a plurality of outside framework oil seals 4 are combined, 4 of outside framework oil seal 4 and outside framework oil seals, formed again the sealing effect of similar labyrinth seal, reached good sealing effect.Changed the new lunar surface contact that is become outside framework oil seal by the contact of gland sealed circumferencial direction face, reduced friction factor, the water pump load current obviously descends, and air horsepower reduces, saving power; Axle sleeve improves working life, and the bearing replacing cycle stretch-out is saved the cost of overhaul.
Claims (1)
1. the sealing configuration of centrifugal pump, comprise pump case (1), baffle ring (2), axle sleeve (3), it is characterized in that: the pump shaft (7) in pump case (1) is provided with axle sleeve (3), be disposed with from left to right baffle ring (2), some outside framework oil seals (4), pad (5) on the axle sleeve (3), and pass bonnet (6) by screw and connect with pump case (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220364943 CN202746273U (en) | 2012-07-26 | 2012-07-26 | Sealing structure of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220364943 CN202746273U (en) | 2012-07-26 | 2012-07-26 | Sealing structure of centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202746273U true CN202746273U (en) | 2013-02-20 |
Family
ID=47705674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220364943 Expired - Fee Related CN202746273U (en) | 2012-07-26 | 2012-07-26 | Sealing structure of centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202746273U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281865A (en) * | 2018-09-12 | 2019-01-29 | 中冶宝钢技术服务有限公司 | Slurry pump packing structure and improved method based on packing seal structure |
-
2012
- 2012-07-26 CN CN 201220364943 patent/CN202746273U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281865A (en) * | 2018-09-12 | 2019-01-29 | 中冶宝钢技术服务有限公司 | Slurry pump packing structure and improved method based on packing seal structure |
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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: 20130220 Termination date: 20130726 |