CN2849244Y - Connecting structure of vertical sealless self-priming pump shaft - Google Patents
Connecting structure of vertical sealless self-priming pump shaft Download PDFInfo
- Publication number
- CN2849244Y CN2849244Y CN 200520047111 CN200520047111U CN2849244Y CN 2849244 Y CN2849244 Y CN 2849244Y CN 200520047111 CN200520047111 CN 200520047111 CN 200520047111 U CN200520047111 U CN 200520047111U CN 2849244 Y CN2849244 Y CN 2849244Y
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- CN
- China
- Prior art keywords
- pump
- shaft
- bearings
- utility
- model
- 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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Abstract
The utility model relates to a connecting structure of a shaft of a vertical self-suction pump without seals, which comprises a motor shaft, a pump bracket, a pump shaft, a pump body and an auxiliary impeller. The utility model is characterized in that the connecting part of the pump shaft is sheathed with a set of bearings; outer rings of the bearings are provided with brackets fixedly connected with the pump bracket; a shaft coupling is fixedly connected to the connecting ends of the pump shaft and the motor shaft; the bearings are ball bearings with deep gouges; the shaft coupling is an elastic sheathing post pin shaft coupling. The utility model has the advantages that the difficulties of the assembly, the maintenance and the disassembly of the utility model are reduced; the axial move of a rotor part can be avoided through the axial positioning of the bearings; the axial clearance between blades and the inner wall of the auxiliary impeller is ensured in a normal running range, namely the sealing capacity of the pump is ensured and the running stability of a pump set is increased. The effect of the structure is obvious when the structure is used in high power pump sets especially.
Description
Technical field
The utility model relates to a kind of Axile connection structure, particularly a kind of vertical non-sealing self-sucking pump Axile connection structure.
Background technique
The Axile connection structure that present domestic non-sealing self-sucking pump adopted is that pump shaft directly is enclosed within on the motor shaft, uses screw lock then.There is following defective in this structure: the poor sealing performance of pump, the sealability of pump depend primarily on the axial clearance and the sub-propeller external diameter size of sub-propeller blade and sidewall.Because being rigidly connected of pump shaft and motor shaft, and there is certain axial string momentum in motor shaft itself, because medium is to the axial impact force of impeller when the deadweight of rotatable parts and water pump operation, cause the pump shaft axial motion, cause the axial clearance of sub-propeller blade and sidewall to increase, thereby cause the envelope pressure energy power of sub-propeller to descend the sealability instability.In addition, pump shaft directly is enclosed within and uses screw lock on the motor shaft, and this structure causes the pump shaft slippage easily, and this phenomenon is particularly serious when high-power pump group especially.Assembling and maintenance dismounting difficulty, existing structure must be done motor, pump support, pump shaft, sub-propeller, impeller as a wholely to assemble and dismantle.Do not have high-power and user especially under the situation such as special tool, assembling and dismounting are very complicated and difficult.
Summary of the invention
The purpose of this utility model is that the Axile connection structure that solves non-sealing self-sucking pump in the prior art adopts pump shaft directly to be enclosed within on the motor shaft, uses the existing the problems referred to above of screw lock then, and a kind of novel vertical non-sealing self-sucking pump Axile connection structure is provided.The utility model designs a kind of vertical non-sealing self-sucking pump Axile connection structure, comprise motor shaft, pump support, pump shaft, the pump housing, sub-propeller, it is characterized in that: be with one group of bearing on the joint of pump shaft, there is the fixedly connected pump support of support the outer ring of bearing, fixedlys connected coupling on the connecting end of the connecting end of pump shaft and motor shaft.Bearing is a deep groove ball bearing, and coupling is a rubbercushioned sleeve bearing coupling.The utility model has the advantages that the difficulty that has reduced assembling and maintenance dismounting, axially locating by bearing, can avoid the axial motion of rotor part, the axial clearance that guarantees sub-propeller blade and sidewall is in normal range of operation, promptly guarantee the sealability of pump, improved pump group operation stability.In high-power pump group, adopt this structure function more obvious especially.
Description of drawings
Below in conjunction with drawings and Examples the utility model is elaborated,
Accompanying drawing is a structural representation of the present utility model,
Embodiment
Comprise motor shaft 1, pump support 2, pump shaft 3, the pump housing 4, sub-propeller 5 among the figure, it is characterized in that: be with one group of bearing 6 on the joint of pump shaft 3, there are support 7 fixedly connected pump supports 2 outer ring of bearing 6, fixedlys connected coupling 8 on the connecting end of the connecting end of pump shaft 3 and motor shaft 1.Bearing 6 is a deep groove ball bearing, and coupling 8 is a rubbercushioned sleeve bearing coupling.
Pump shaft 3 Placements adopt rubbercushioned sleeve bearing coupling 8 to connect and increase by one group of deep groove ball bearing 6 at pump support 2, can guarantee that the running of pump shaft 3 in rotation is stable, after rubbercushioned sleeve bearing coupling 8 is adopted in the connection of pump shaft 3, reduce the difficulty of assembling and maintenance dismounting, thereby reduced production and maintenance cost.By the axially locating of bearing 6, can avoid the axial motion of rotor part, the axial clearance that guarantees sub-propeller 5 blades and sidewall has promptly guaranteed the sealability of pump in normal range of operation, improved pump group operation stability.In high-power pump group, adopt this structure function more obvious especially.
Claims (2)
1, a kind of vertical non-sealing self-sucking pump Axile connection structure, comprise motor shaft, pump support, pump shaft, the pump housing, sub-propeller, it is characterized in that: be with one group of bearing on the joint of pump shaft, there is the fixedly connected pump support of support the outer ring of bearing, fixedlys connected coupling on the connecting end of the connecting end of pump shaft and motor shaft.
2, by the described a kind of vertical non-sealing self-sucking pump Axile connection structure of claim 1, it is characterized in that: bearing is a deep groove ball bearing, and coupling is a rubbercushioned sleeve bearing coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520047111 CN2849244Y (en) | 2005-11-30 | 2005-11-30 | Connecting structure of vertical sealless self-priming pump shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520047111 CN2849244Y (en) | 2005-11-30 | 2005-11-30 | Connecting structure of vertical sealless self-priming pump shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2849244Y true CN2849244Y (en) | 2006-12-20 |
Family
ID=37521728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520047111 Expired - Fee Related CN2849244Y (en) | 2005-11-30 | 2005-11-30 | Connecting structure of vertical sealless self-priming pump shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2849244Y (en) |
-
2005
- 2005-11-30 CN CN 200520047111 patent/CN2849244Y/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061220 Termination date: 20091230 |