CN218407915U - Pump body water conservancy diversion structure and centrifugal pump - Google Patents
Pump body water conservancy diversion structure and centrifugal pump Download PDFInfo
- Publication number
- CN218407915U CN218407915U CN202221966504.5U CN202221966504U CN218407915U CN 218407915 U CN218407915 U CN 218407915U CN 202221966504 U CN202221966504 U CN 202221966504U CN 218407915 U CN218407915 U CN 218407915U
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- pump body
- guide vane
- impeller
- flow
- water conservancy
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Abstract
The utility model discloses a pump body water conservancy diversion structure and centrifugal pump, including the pump body and inside water conservancy diversion structure, inside water conservancy diversion structure includes: the impeller is connected with a main shaft of the pump body; the guide vane is used for receiving the liquid pumped out by the impeller; and the flow baffle is sleeved on the main shaft of the pump body, and the outer side end of the flow baffle is connected with the guide vane. The tail end of the flow baffle is welded on the edge of the guide vane, the cavity between the impeller and the guide vane is reduced, and the flowing state of the fluid medium in the cavity is changed, so that the energy obtained by the fluid medium in the cavity from the working energy medium is reduced, the water conservancy loss is reduced, and the efficiency of the pump is improved.
Description
Technical Field
The utility model belongs to the technical field of fluid machine, concretely relates to pump body water conservancy diversion structure and centrifugal pump with keep off and flow board.
Background
The centrifugal pump is a device which drives a impeller to rotate through a motor so as to generate negative pressure in the pump and continuously suck in and discharge fluid. As shown in fig. 1, in the conventional centrifugal pump, fluid discharged through the impeller 13 generally needs to be discharged through the flow guiding effect of the guide vane 3, because the impeller 13 needs to rotate continuously during operation, and the guide vane 3 is generally fixed, the impeller 13 and the guide vane 3 cannot be directly connected, and a gap must exist between the impeller 13 and the guide vane 3, the fluid is easy to flow out from the gap when being pumped from the impeller 13 to the guide vane 3, so that the efficiency of the pump for conveying fluid is reduced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problem that there is the gap to lead to hydraulic loss between the impeller of centrifugal pump among the prior art and the stator, the utility model provides a pump body water conservancy diversion structure and centrifugal pump with keep off and flow board.
The utility model discloses a realize through following technical scheme: the utility model provides a pump body water conservancy diversion structure, includes the pump body and inside water conservancy diversion structure, and inside water conservancy diversion structure includes: the impeller is connected with the main shaft of the pump body; the guide vane is used for receiving the liquid pumped out by the impeller; the flow baffle is sleeved on the main shaft of the pump body, and the outer side end of the flow baffle is connected with the guide vane.
The tail end of the flow baffle is welded on the edge of the guide vane, so that the structure of a cavity behind the impeller is changed, the cavity between the impeller and the guide vane is reduced, the flowing state of the fluid medium in the cavity is changed, the energy obtained by the fluid medium in the cavity from the working energy medium is reduced, the water conservancy loss is reduced, and the efficiency of the pump is improved.
Preferably, the main shaft is provided with a bearing seat on one side of the flow baffle, which is back to the guide vane, the bearing seat is provided with a concave part, one side of the flow baffle, which is back to the guide vane, is provided with a flow baffle support, and the tail end of the flow baffle support is abutted to the concave part. The inner edge of the flow baffle is sleeved on the main shaft of the pump body, and the flow baffle support can limit the displacement of the flow baffle in the axial direction of the main shaft. And butt joint is carried out through the depressed part, and welding is not needed, so that the installation is more convenient.
Preferably, the flow baffle support is directly connected to the pump body, and the flow baffle support can limit the displacement of the flow baffle in the axial direction of the main shaft.
Preferably, the guide vane comprises an outer guide vane cover and an inner guide vane cover, fluid passes through the space between the outer guide vane cover and the inner guide vane cover, and the flow baffle is connected to the tail end of the inner guide vane cover.
Preferably, the end of the flow baffle is folded towards the guide vane, so that the gap between the flow baffle and the impeller is increased, and the flow baffle is prevented from blocking the work of the impeller.
Preferably, a flow guide disc is arranged on one side, back to the flow baffle, of the impeller, a mouth ring and a mouth ring gland are arranged between the flow guide disc and the impeller, the mouth ring plays a role in rotary sealing, and the mouth ring gland plays a role in compressing the mouth ring.
A centrifugal pump comprises the pump body flow guide structure.
Compared with the prior art, the utility model has the advantages that:
the tail end of the flow baffle is welded on the edge of the guide vane, so that the structure of a rear cavity of the impeller is changed, the cavity between the impeller and the guide vane is reduced, the flowing state of the fluid medium in the cavity is changed, and the energy obtained by the fluid medium in the cavity from the working energy medium is reduced, thereby reducing the water conservancy loss and improving the efficiency of the pump.
Drawings
FIG. 1 is a schematic sectional view of a conventional centrifugal pump;
fig. 2 is a schematic cross-sectional view of a first embodiment and a second embodiment of the present invention;
fig. 3 is a schematic top view of a baffle plate.
In the figure: the guide vane structure comprises a lower guide vane shell 1, a lower outer guide vane cover 2, a guide vane 3, an upper guide vane shell 4, an upper outer guide vane cover 5, an inner guide vane cover 6, a bearing seat 7, a guide disc 8, an opening ring 9, an opening ring gland 10, a flow baffle plate 11, a flow baffle plate support 12, an impeller 13 and a main shaft 14.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand and understand, how to implement the present invention is further explained below with reference to the accompanying drawings and the detailed description.
In a first embodiment, as shown in fig. 2, a pump body flow guiding structure includes a pump body and an internal flow guiding structure, where the internal flow guiding structure includes:
the impeller 13, the impeller 13 is connected to the main shaft 14 of the pump body, one side of the impeller 13 opposite to the baffle plate is provided with a flow guide plate 8, the flow guide plate 8 is arranged on the upper guide shell 4 in an interference manner, a mouth ring 9 and a mouth ring gland 10 are arranged between the flow guide 8 plate and the impeller 13, the mouth ring 9 is pressed on the flow guide plate 8 through the mouth ring gland 10 and the flow guide plate 8 in an interference manner, the mouth ring gland 10 is pressed tightly and cannot rotate, the mouth ring 9 can rotate flexibly, the mouth ring 9 plays a role in rotary sealing, and the mouth ring gland 10 plays a role in compressing the mouth ring;
the guide vane is used for receiving liquid pumped by the impeller 13, the guide vane comprises an outer guide vane cover and an inner guide vane cover 6, the fluid passes through the space between the outer guide vane cover and the inner guide vane cover 6, the flow baffle is connected to the tail end of the inner guide vane cover 6, and the outer guide vane cover comprises an upper outer guide vane cover 5 and a lower outer guide vane cover 2, so that the installation is convenient;
the flow baffle 11 is sleeved on a main shaft 14 of the pump body, the outer side end of the flow baffle 11 is welded on the inner guide vane cover 6, the tail end of the flow baffle 11 is folded towards the guide vane, the gap between the flow baffle 11 and the impeller 13 is enlarged, and the flow baffle 11 is prevented from blocking the impeller 13 to work.
In order to make the flow baffle 11 more firm, one solution is that the flow baffle support 12 is directly connected to the pump body, for example, welded to the bearing seat 7, and the like, and the flow baffle support 12 can limit the displacement of the flow baffle 11 in the axial direction of the main shaft 14; in another scheme, a bearing seat 7 is arranged on one side, back to the guide vane, of the flow baffle plate 11 of the main shaft 14, the bearing seat 7 is welded on the inner guide vane cover 6, a concave part is arranged on the bearing seat 7, a flow baffle plate support 12 is arranged on one side, back to the guide vane, of the flow baffle plate 11, and the tail end of the flow baffle plate support 12 is abutted or welded on the concave part, as shown in fig. 2. The inner edge of the flow baffle 11 is sleeved on the main shaft 14 of the pump body, and the flow baffle support 12 can limit the displacement of the flow baffle 11 in the axial direction of the main shaft 14 and change the cavity structure between the impeller 15 and the guide vane, so that the welding of the flow baffle 11 is more convenient.
The end of the baffle plate 11 is welded on the edge of the guide vane, so that the structure of the rear cavity of the impeller 13 is changed, the space between the baffle plate 11 and the impeller 13 is reduced, the inflow amount of fluid from the gap between the impeller 13 and the guide vane is reduced, namely, the energy obtained by the fluid medium in the cavity from the working energy medium is reduced, the hydraulic loss is reduced, and the efficiency of the pump is improved.
The second embodiment is a centrifugal pump, which comprises the pump body flow guide structure in the first embodiment, wherein a flow guide shell is arranged on the outer side of the pump body flow guide structure, as shown in fig. 1, the flow guide shell comprises an upper flow guide shell 4 and a lower flow guide shell 1 on the upper portion, and the centrifugal pump is convenient to mount.
Claims (7)
1. The utility model provides a pump body water conservancy diversion structure, includes the pump body and inside water conservancy diversion structure, its characterized in that, inside water conservancy diversion structure includes:
the impeller is connected with a main shaft of the pump body;
the guide vane is used for receiving the liquid pumped out by the impeller;
and the flow baffle is sleeved on the main shaft of the pump body, and the outer side end of the flow baffle is connected with the guide vane.
2. The pump body flow guide structure according to claim 1, wherein: the main shaft is provided with the bearing frame on the side of keeping off the class board dorsad the stator, be provided with the depressed part on the bearing frame, keep off class board dorsad stator one side and be provided with and keep off class board support, keep off class board support terminal top and connect in the depressed part.
3. The pump body flow guide structure according to claim 2, wherein: the flow baffle support is directly connected to the pump body.
4. The pump body flow guide structure according to claim 1, 2 or 3, wherein: the guide vane includes an outer guide vane cover and an inner guide vane cover.
5. The pump body flow guide structure according to claim 1, 2 or 3, wherein: the tail end of the flow baffle is turned over towards the guide vane.
6. The pump body flow guide structure according to claim 1 or 2, wherein: a flow guide disc is arranged on one side, back to the flow baffle, of the impeller, and a mouth ring gland are arranged between the flow guide disc and the impeller.
7. A centrifugal pump characterized by: including the pump body flow guiding structure according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221966504.5U CN218407915U (en) | 2022-07-28 | 2022-07-28 | Pump body water conservancy diversion structure and centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221966504.5U CN218407915U (en) | 2022-07-28 | 2022-07-28 | Pump body water conservancy diversion structure and centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218407915U true CN218407915U (en) | 2023-01-31 |
Family
ID=85013109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221966504.5U Active CN218407915U (en) | 2022-07-28 | 2022-07-28 | Pump body water conservancy diversion structure and centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218407915U (en) |
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2022
- 2022-07-28 CN CN202221966504.5U patent/CN218407915U/en active Active
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