CN203201812U - Impeller back-to-back type centrifugal pump - Google Patents
Impeller back-to-back type centrifugal pump Download PDFInfo
- Publication number
- CN203201812U CN203201812U CN 201320075169 CN201320075169U CN203201812U CN 203201812 U CN203201812 U CN 203201812U CN 201320075169 CN201320075169 CN 201320075169 CN 201320075169 U CN201320075169 U CN 201320075169U CN 203201812 U CN203201812 U CN 203201812U
- Authority
- CN
- China
- Prior art keywords
- impeller
- impellers
- sets
- levels
- centrifugal pump
- 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
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- Control Of Non-Positive-Displacement Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides an impeller back-to-back type centrifugal pump. The impeller back-to-back type centrifugal pump comprises a pump body and a pump shaft. Balancing drums and impellers are arranged on the pump shaft, the impellers are divided into a left impeller set and a right impeller set in an average mode according to the number of levels of the impellers, and the left impeller set and the right impeller set are of a back-to-back type structure. When the number of the levels of the impellers is an odd number, after the impellers are divided into two sets in an average mode according to the number of the levels of the impellers, and the remaining level impellers are arranged on the side close to the balancing drums. The impellers are divided into two sets in an average mode according to the number of the levels of the impellers, a series-connected structure is adopted for each set of the impellers, the back-to-back structure is adopted for the two sets of the impellers, so that axial force generated by each set of the impellers is basically and mutually balanced, and thrust bearings almost do not bear the axial force. If the number of the levels of the impellers is the odd number, the balancing drums and the thrust bearings only bear the axial force generated by one impeller, and therefore loads borne by the thrust bearings are small.
Description
Technical field
The utility model belongs to mechanical field, relates in particular to the centrifugal pump that a kind of impeller is carried on the back formula dorsad.
Background technique
Original multistage pump, the arrangement of impeller generally adopts the mode of series connection, balance of axial force adopts balancing drum to add the mode of thrust-bearing, if impeller progression is more, the axial force that produces is just big, the load of thrust-bearing carrying is just big, and thrust-bearing is often because of the big phenomenon that heating occurs of loading, and then bearing failure.
Summary of the invention
The centrifugal pump that the utility model provides a kind of impeller to carry on the back formula has dorsad solved the shortcoming of the bearing failure that the impeller in the background technique causes greatly because of axial force.
The technical solution of the utility model is achieved in that a kind of impeller carries on the back the centrifugal pump of formula dorsad, comprise the pump housing, pump shaft, pump shaft is provided with balancing drum, impeller, progression by impeller is equally divided into two groups, left side impeller sets and the right impeller sets, left side impeller sets and the right impeller sets are for carrying on the back the formula structure dorsad;
When impeller progression was odd number, after impeller progression was equally divided into two groups, remaining one-level impeller was arranged in the one side near balancing drum.
The beneficial effects of the utility model are: the utility model is equally divided into two groups according to the progression of impeller, the impeller of each group adopts the structure of series connection, two groups of impellers adopt the structures of the back of the body dorsad, every group of basic balance mutually of axial force that impeller produces like this, and thrust-bearing bears axial force hardly.If the progression of impeller is odd number, balancing drum and thrust-bearing only bear the axial force that an impeller produces so, and the load that thrust-bearing bears is less.
Description of drawings
Fig. 1 is generalized section of the present utility model.
Part explanation: 1, left side impeller sets, 2, the right impeller sets, 3, balancing drum, 4, the pump housing, 5, pump shaft.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described: a kind of impeller is carried on the back the centrifugal pump of formula dorsad, comprise the pump housing 4, pump shaft 5, pump shaft 5 is provided with balancing drum 3, impeller, progression by impeller is equally divided into two groups, left side impeller sets 1 and the right impeller sets 2, left side impeller sets 1 and the right impeller sets 2 are for carrying on the back the formula structure dorsad, when impeller progression is odd number, after impeller progression was equally divided into two groups, remaining one-level impeller was arranged in the one side near balancing drum 3.
Two groups of impellers adopt the structures of the back of the body dorsad, every group of basic balance mutually of axial force that impeller produces like this, and thrust-bearing bears axial force hardly.If the progression of impeller is odd number, balancing drum and thrust-bearing only bear the axial force that an impeller produces so, and the load that thrust-bearing bears is less.
Claims (2)
1. an impeller is carried on the back the centrifugal pump of formula dorsad, comprise the pump housing (4), pump shaft (5), pump shaft (5) is provided with balancing drum (3), impeller, it is characterized in that being equally divided into two groups by the progression of impeller, left side impeller sets (1) and the right impeller sets (2), left side impeller sets (1) and the right impeller sets (2) are for carrying on the back the formula structure dorsad.
2. a kind of impeller according to claim 1 is carried on the back the centrifugal pump of formula dorsad, and when it is characterized in that impeller progression is odd number, after impeller progression was equally divided into two groups, remaining one-level impeller was arranged in the one side near balancing drum (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320075169 CN203201812U (en) | 2013-02-18 | 2013-02-18 | Impeller back-to-back type centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320075169 CN203201812U (en) | 2013-02-18 | 2013-02-18 | Impeller back-to-back type centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203201812U true CN203201812U (en) | 2013-09-18 |
Family
ID=49145924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320075169 Expired - Fee Related CN203201812U (en) | 2013-02-18 | 2013-02-18 | Impeller back-to-back type centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203201812U (en) |
-
2013
- 2013-02-18 CN CN 201320075169 patent/CN203201812U/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: 20130918 Termination date: 20160218 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |