CN212643172U - Structure for preventing liquid at inlet of canned motor pump from flowing reversely - Google Patents
Structure for preventing liquid at inlet of canned motor pump from flowing reversely Download PDFInfo
- Publication number
- CN212643172U CN212643172U CN202021076935.5U CN202021076935U CN212643172U CN 212643172 U CN212643172 U CN 212643172U CN 202021076935 U CN202021076935 U CN 202021076935U CN 212643172 U CN212643172 U CN 212643172U
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- pump
- shaft
- inducer
- canned motor
- inlet
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Abstract
The utility model discloses a prevent structure of canned motor pump entry liquid countercurrent, including setting up pump shaft, inducer in the pump body, the inducer suit is on the pump shaft, the inducer is located axle head one side of pump shaft and installs the stabilizer, the impeller is installed to the inducer opposite side. The utility model is characterized in that: the anti-cavitation pump has the advantages of simple structure, convenience in assembly and disassembly and low cost, and can prevent the reverse flow of the liquid at the inlet of the canned motor pump by arranging the flow stabilizing plate, improve the anti-cavitation performance of the pump in a small flow area and improve the running stability.
Description
Technical Field
The utility model relates to a relevant technical field of pump, concretely relates to prevent structure against current of canned motor pump entry liquid.
Background
For the canned motor pump with the inducer arranged at the pump inlet, when the pump runs under a low-flow working condition, backflow can be generated at the outer edge of the inducer, and the backflow and inflow of the pump inlet generate clash, so that the cavitation resistance of the pump in a low-flow area is seriously influenced, the pump runs unstably, faults such as abnormal noise, vibration and the like are generated, and even the pump is possibly damaged in severe cases.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the not enough problem of aforesaid, provide a prevent structure of canned motor pump entry liquid adverse current.
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: the utility model provides a prevent structure of canned motor pump inlet liquid countercurrent, includes pump shaft, inducer that sets up in the pump body, the inducer suit is on the pump shaft, the inducer is located axle head one side of pump shaft and installs the stabilizer, the impeller is installed to the inducer opposite side.
The flow stabilizing plate is arranged at the shaft end of the pump shaft, and the inner end face of the flow stabilizing plate is in contact with the shaft end of the pump shaft.
The flow stabilizing plate is sleeved on a wheel shaft of the inducer.
The impeller is sleeved on a wheel shaft of the inducer.
The shaft end of the pump shaft is inserted with a shaft head bolt, the shaft head bolt and the pump shaft are in threaded fit, the shaft head bolt is coaxial with the pump shaft, and the flow stabilizing plate, the inducer and the impeller are axially fastened through the shaft head bolt.
The utility model is characterized in that: the anti-cavitation pump has the advantages of simple structure, convenience in assembly and disassembly and low cost, and can prevent the reverse flow of the liquid at the inlet of the canned motor pump by arranging the flow stabilizing plate, improve the anti-cavitation performance of the pump in a small flow area and improve the running stability.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein: 1. the pump body 2, impeller 3, inducer 4, pump shaft 5, spindle nose bolt 6, stabilizer.
Detailed Description
As shown in figure 1, the utility model relates to a structure for preventing the liquid at the inlet of a canned motor pump from flowing backwards, which comprises a pump shaft 4 and an inducer 3 which are arranged in a pump body 1, the inducer 3 is sleeved on the pump shaft 4, a flow stabilizing plate 6 is arranged on one side of the inducer 3, which is positioned at the shaft end of the pump shaft 4, the flow stabilizing plate 6 can be arranged at the shaft end of the pump shaft 4, the inner end surface of the flow stabilizing plate 6 is contacted with the shaft end of the pump shaft 4, the flow stabilizing plate 6 can also be sleeved on the wheel shaft of the inducer 3, and is selected according to the actual working condition, the other side of the inducer 3 is provided with an impeller 2, the inlet of the impeller 2 is sleeved on the wheel shaft of the inducer 3, the shaft end of the pump shaft 4 is inserted with a shaft head bolt 5, the shaft head bolt and the pump shaft are in threaded fit, the shaft head bolt 5 is coaxial with the pump shaft 4, and the flow stabilizing plate 6, the inducer 3 and the impeller 2 are axially fastened through the shaft head bolt 5.
The utility model discloses at inducer 3's front side installation current stabilizer 6, through current stabilizer 6's separation effect, the liquid reflux of 3 outer fringe departments of inducer produces the offset with the incoming flow under effectively avoiding the low discharge operating mode to improve the anti cavitation performance of pump under the low discharge operating mode, improve the stability of operation.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be within the technical scope of the present invention, and the technical solutions and the inventive concepts of the present invention are equivalent to or changed according to the present invention, and all those skilled in the art should be covered by the scope of the present invention.
Claims (5)
1. A structure for preventing the liquid in the inlet of a canned motor pump from flowing reversely is characterized in that: the inducer is sleeved on the pump shaft, a flow stabilizing plate is installed on one side, located at the shaft end of the pump shaft, of the inducer, and an impeller is installed on the other side of the inducer.
2. The structure for preventing the reverse flow of a liquid at an inlet of a canned motor pump as set forth in claim 1, wherein: the flow stabilizing plate is arranged at the shaft end of the pump shaft, and the inner end face of the flow stabilizing plate is in contact with the shaft end of the pump shaft.
3. The structure for preventing the reverse flow of a liquid at an inlet of a canned motor pump as set forth in claim 1, wherein: the flow stabilizing plate is sleeved on a wheel shaft of the inducer.
4. The structure for preventing the reverse flow of a liquid at an inlet of a canned motor pump as set forth in claim 1, wherein: the impeller is sleeved on a wheel shaft of the inducer.
5. The structure for preventing the reverse flow of a liquid at an inlet of a canned motor pump as set forth in any one of claims 1 to 4, wherein: the shaft end of the pump shaft is inserted with a shaft head bolt, the shaft head bolt and the pump shaft are in threaded fit, the shaft head bolt is coaxial with the pump shaft, and the flow stabilizing plate, the inducer and the impeller are axially fastened through the shaft head bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021076935.5U CN212643172U (en) | 2020-06-12 | 2020-06-12 | Structure for preventing liquid at inlet of canned motor pump from flowing reversely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021076935.5U CN212643172U (en) | 2020-06-12 | 2020-06-12 | Structure for preventing liquid at inlet of canned motor pump from flowing reversely |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212643172U true CN212643172U (en) | 2021-03-02 |
Family
ID=74791550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021076935.5U Active CN212643172U (en) | 2020-06-12 | 2020-06-12 | Structure for preventing liquid at inlet of canned motor pump from flowing reversely |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212643172U (en) |
-
2020
- 2020-06-12 CN CN202021076935.5U patent/CN212643172U/en active Active
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