CN202250904U - Centrifugal pump - Google Patents
Centrifugal pump Download PDFInfo
- Publication number
- CN202250904U CN202250904U CN2011202454316U CN201120245431U CN202250904U CN 202250904 U CN202250904 U CN 202250904U CN 2011202454316 U CN2011202454316 U CN 2011202454316U CN 201120245431 U CN201120245431 U CN 201120245431U CN 202250904 U CN202250904 U CN 202250904U
- Authority
- CN
- China
- Prior art keywords
- pump
- main shaft
- shaft
- motor
- pump housing
- 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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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model belongs to the field of pump valves and particularly relates to a centrifugal pump. The centrifugal pump comprises a motor, a pump body, an impeller and a pump cover used for sealing the pump body and is characterized in that a lengthening shaft is sleeved on the excircle of the main shaft of the motor, penetrates the pump cover, is connected with the impeller and is arranged inside the pump body; and the joint of the pump cover and the lengthening shaft is sealed mechanically. Compared with the prior art, the lengthening shaft is sleeved on the main shaft of the motor, so that once corrosion occurs, only the lengthening shaft needs to be replaced, therefore, the replacement is simple and convenient, and the problem that the main shaft of the motor is damaged as the main shaft of the motor is in direct contact with corrosive liquid can be avoided.
Description
[technical field]
This practicality belongs to the pump valve field, specifically a kind of centrifugal pump.
[background technique]
Centrifugal pump is applicable to mainly in the pipelines such as petrochemical industry, metallurgy and thermoelectricity plant that mainly by the pump housing, pump cover, motor, impeller is formed.Because after the long-time use of centrifugal pump; The big high attenuation of its mechanical sealability causes in the pump housing and leaks, and its chemical liquid may cause corrosion to electric machine main shaft; But, the electric machine main shaft of existing centrifugal pump is connected with impeller because generally all adopting directly; Possibly just need keep in repair or change in case main shaft is impaired whole motor, too high to the input cost of enterprise, be unfavorable for the development of enterprise.
[summary of the invention]
The purpose of the utility model is the deficiency that overcomes existing technology, and a kind of centrifugal pump that has extension shaft is provided.
In order to achieve the above object, the utility model has designed a kind of centrifugal pump, comprises motor; The pump housing; Impeller is used to seal the pump cover of the pump housing, it is characterized in that: sheathed extension shaft on the cylindrical of electric machine main shaft; Extension shaft runs through pump cover and connects impeller and places the pump housing inner, and the joint of pump cover and extension shaft is provided with mechanical seal.
Also be provided with water retaining ring on the main shaft of said motor.
The water outlet place of the said pump housing is provided with the pressure gauge that is used to monitor pump housing internal pressure.
The utility model is compared with existing technology, and electric machine main shaft is sheathed extension shaft in case find corrosion phenomenon, only needs change extension shaft, not only changes easyly, and has avoided the direct contact corrosion property liquid of electric machine main shaft and causes impaired.
[description of drawings]
Fig. 1 is the structural representation of the utility model.
Referring to Fig. 1,1 is the pump housing; 2 is pump cover; 3 is extension shaft; 4 is electric machine main shaft; 5 is motor; 6 is pressure gauge; 7 are mechanical seal; 8 is water retaining ring; 9 is impeller; 10 is water outlet.
[embodiment]
Combine accompanying drawing that the utility model is done further describes at present.
As shown in Figure 1, the utility model comprises motor 5, the pump housing 1, and impeller 9 is used to seal the pump cover 2 of the pump housing 1.Sheathed extension shaft 3 on the cylindrical of this electric machine main shaft 4, extension shaft 3 run through pump cover 2 and connect impeller 9 and place the pump housing 1 inside, and pump cover 2 is provided with mechanical seal 7 with the joint of extension shaft 3.Also be provided with water retaining ring on the electric machine main shaft 4.Water outlet 10 places of the pump housing 1 also are provided with the pressure gauge 6 that is used to monitor the pump housing 1 internal pressure.
The utility model is compared with existing technology, and electric machine main shaft 4 is sheathed extension shaft 3 in case find corrosion phenomenon, only needs change extension shaft 3, not only changes easyly, and has avoided electric machine main shaft 4 direct contact corrosion property liquid and causes impaired.
Claims (3)
1. centrifugal pump; Comprise motor, the pump housing, impeller; Be used to seal the pump cover of the pump housing; It is characterized in that: sheathed extension shaft (3) on the cylindrical of electric machine main shaft (4), extension shaft (3) run through pump cover (2) and connect impeller (9) and place the pump housing (1) inside, and pump cover (2) is provided with mechanical seal (7) with the joint of extension shaft (3).
2. a kind of centrifugal pump according to claim 1 is characterized in that: also be provided with water retaining ring (8) on the said electric machine main shaft (4).
3. a kind of centrifugal pump according to claim 1 is characterized in that: the water outlet (10) of the said pump housing (1) locates to be provided with the pressure gauge (6) that is used to monitor pump housing internal pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202454316U CN202250904U (en) | 2011-07-13 | 2011-07-13 | Centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202454316U CN202250904U (en) | 2011-07-13 | 2011-07-13 | Centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202250904U true CN202250904U (en) | 2012-05-30 |
Family
ID=46112156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202454316U Expired - Fee Related CN202250904U (en) | 2011-07-13 | 2011-07-13 | Centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202250904U (en) |
-
2011
- 2011-07-13 CN CN2011202454316U patent/CN202250904U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20150713 |
|
| EXPY | Termination of patent right or utility model |