CN201582127U - Novel two-stage double-tube inlet double-suction pump rotor - Google Patents
Novel two-stage double-tube inlet double-suction pump rotor Download PDFInfo
- Publication number
- CN201582127U CN201582127U CN2009202146587U CN200920214658U CN201582127U CN 201582127 U CN201582127 U CN 201582127U CN 2009202146587 U CN2009202146587 U CN 2009202146587U CN 200920214658 U CN200920214658 U CN 200920214658U CN 201582127 U CN201582127 U CN 201582127U
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- China
- Prior art keywords
- stage
- double
- impeller
- rotating shaft
- impellers
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- Expired - Fee Related
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Abstract
The utility model relates to a novel two-stage double-tube inlet double-suction pump rotor, comprising a rotating shaft, first stage impellers, a second stage impeller, a shaft sleeve, interstage shaft sleeves, shaft sleeve nuts, a front sliding bearing, a rear sliding bearings and angular contact ball bearings. The novel two-stage double-tube inlet double-suction pump rotor is characterized in that the double-suction type second stage impeller is arranged at the middle of the rotating shaft; the single-suction type first stage impellers are respectively arranged at the left side and the right side of the second stage impeller; the impellers are positioned by the interstage shaft sleeves; the first stage impellers of both sides are respectively locked and fixed on the rotating shaft by the shaft sleeve and the shaft sleeve nuts; the impellers, the interstage shaft sleeves, the shaft sleeve and the shaft are connected by keys; the front sliding bearing is arranged at the front end of the rotating shaft; the rear sliding bearing and a pair of angular contact ball bearing are arranged at the tail end of the rotating shaft; and the suction directions of the two single-suction type first stage impellers are opposite. The novel two-stage double-tube inlet double-suction pump rotor has the advantages that the two first stage impellers suck water simultaneously; the impellers on the shaft are symmetrically distributed; radial force and residual axial force are greatly reduced; and component damage caused by axial serial-moving of a rotor is avoided.
Description
Technical field
The utility model relates to a kind of the two poles of the earth double suction pump rotor, the two-tube import double suction pump of particularly a kind of novel two-stage rotor.
Background technique
Present the two poles of the earth double suction pump rotor structure is for to be equipped with two impellers in rotating shaft, chopped-off head is a double-entry impeller, and secondary is single suction impeller, is fixed in the rotating shaft by axle sleeve and locking nut, and bearing is equipped with at the rotating shaft two ends.Because impeller is asymmetric distribution in the rotating shaft, there are bigger axial force and radial force during pump operation, rotor is gone here and there phenomenon easily, influences the normal use of pump.
Summary of the invention
The purpose of this utility model is to solve existing the problems referred to above of two-stage single tube import double sucting pump in the prior art, and a kind of two-tube import double suction pump of novel two-stage rotor that can overcome above-mentioned shortcoming is provided.The utility model designs the two-tube import double suction pump of a kind of novel two-stage rotor, comprise rotating shaft, first stage impeller, secondary impeller, axle sleeve, the inter-stage axle sleeve, sleeve nut, the front and back sliding bearing, angular contact ball bearing, it is characterized in that: the secondary impeller that a double-sucking type is installed in the middle of rotating shaft, be separately installed with the first stage impeller of a single suction formula in the left and right sides of secondary impeller, locate with the inter-stage axle sleeve between the impeller, the first stage impeller of both sides is locked in rotating shaft by axle sleeve and sleeve nut respectively, impeller, the inter-stage axle sleeve, axle sleeve with the axle between be connected by key, at the rotating shaft front end front slide bearing is installed, the rotating shaft tail end is equipped with back sliding bearing and a pair of angular contact ball bearing, and the suction direction of the first stage impeller of two single suction formulas is opposite.The utility model has the advantages that by two first stage impellers to absorb water simultaneously that impeller is symmetrically distributed on the axle, reduces radial force and residual axial force greatly, avoid the moving damage parts that causes of rotor axial string.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Below in conjunction with accompanying drawing and example the utility model is elaborated.
Embodiment
Comprise rotating shaft 1 among the figure, first stage impeller 2, secondary impeller 3, axle sleeve 4, inter-stage axle sleeve 5, sleeve nut 6, front and back sliding bearing 7, angular contact ball bearing 8, it is characterized in that: the secondary impeller 3 that a double-sucking type is installed in the middle of rotating shaft 1, be separately installed with the first stage impeller 2 of a single suction formula in the left and right sides of secondary impeller 3, locate with inter-stage axle sleeve 5 between the impeller, the first stage impeller 2 of both sides is locked in rotating shaft 1 by axle sleeve 4 and sleeve nut 6 respectively, impeller, inter-stage axle sleeve 5, be connected by key 9 between axle sleeve 4 and the rotating shaft 1, at rotating shaft 1 front end front slide bearing 7 is installed, the suction direction of the first stage impeller 2 of sliding bearing 7 and 8, two single suction formulas of a pair of angular contact ball bearing was opposite after rotating shaft 1 tail end was equipped with.
The utility model has changed in the past that first stage impeller absorbs water from a water intake, adopts two first stage impeller 2 back-to-back installations, separately the import suction from both sides simultaneously, and middle secondary impeller 3 is designed to double-sucking type.The impeller of this symmetrical distribution not only can automatically balancing axial force on the basis that lift is doubled, and the diameter of axle and the choma spot size of 3 impellers are identical simultaneously, are easy to production and processing.
Claims (2)
1. the two-tube import double suction pump of novel two-stage rotor, comprise rotating shaft, first stage impeller, secondary impeller, axle sleeve, the inter-stage axle sleeve, sleeve nut, the front and back sliding bearing, angular contact ball bearing, it is characterized in that: the secondary impeller that a double-sucking type is installed in the middle of rotating shaft, be separately installed with the first stage impeller of a single suction formula in the left and right sides of secondary impeller, locate with the inter-stage axle sleeve between the impeller, the first stage impeller of both sides is locked in rotating shaft by axle sleeve and sleeve nut respectively, impeller, the inter-stage axle sleeve, axle sleeve with the axle between be connected by key, at the rotating shaft front end front slide bearing is installed, the rotating shaft tail end is equipped with back sliding bearing and a pair of angular contact ball bearing.
2. by the two-tube import double suction pump of the described a kind of novel two-stage of claim 1 rotor, it is characterized in that: the suction direction of the first stage impeller of two single suction formulas is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202146587U CN201582127U (en) | 2009-12-01 | 2009-12-01 | Novel two-stage double-tube inlet double-suction pump rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202146587U CN201582127U (en) | 2009-12-01 | 2009-12-01 | Novel two-stage double-tube inlet double-suction pump rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201582127U true CN201582127U (en) | 2010-09-15 |
Family
ID=42724126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202146587U Expired - Fee Related CN201582127U (en) | 2009-12-01 | 2009-12-01 | Novel two-stage double-tube inlet double-suction pump rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201582127U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606523A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Rotor unit of service water pump for nuclear power station |
-
2009
- 2009-12-01 CN CN2009202146587U patent/CN201582127U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606523A (en) * | 2012-03-27 | 2012-07-25 | 上海阿波罗机械股份有限公司 | Rotor unit of service water pump for nuclear power station |
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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: 20100915 Termination date: 20111201 |