CN217682310U - Cantilever type centrifugal pump for small flow and high lift - Google Patents
Cantilever type centrifugal pump for small flow and high lift Download PDFInfo
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- CN217682310U CN217682310U CN202222003822.8U CN202222003822U CN217682310U CN 217682310 U CN217682310 U CN 217682310U CN 202222003822 U CN202222003822 U CN 202222003822U CN 217682310 U CN217682310 U CN 217682310U
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- impeller
- ring
- pump
- guide vane
- high lift
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Abstract
The utility model discloses a cantilever type centrifugal pump for small flow and high lift, which comprises a guide vane type wear-resisting ring, wherein the first side of the wear-resisting ring is inwards provided with an accommodating space for accommodating an impeller, and the outer peripheral surface of the first side is uniformly provided with a plurality of guide vane type flow passages; the impeller is arranged in the accommodating space of the guide vane type wear-resisting ring, a hollow impeller hub is arranged in the middle of the impeller, a plurality of straight blades are uniformly distributed on the peripheral surface of the impeller hub, and the middle of one side of each straight blade is connected with an annular blade cover plate. The utility model has the following beneficial effects; 1. the blades of the impeller are in a straight blade form, so that the casting difficulty is reduced; 2. the guide vane type wear-resistant ring is provided with a guide vane type flow passage, so that the pump efficiency is improved; 3. the guide vane type wear-resistant ring is provided with an adjusting bolt, so that the gap between the impeller and the wear-resistant ring can be dynamically adjusted, and the performance parameters of the pump are improved; 4. the bearing unit is provided with the support legs, so that the integral rigidity of the bearing unit is improved.
Description
Technical Field
The utility model belongs to the field of machinery, concretely relates to cantilever type centrifugal pump for low discharge high lift.
Background
Centrifugal pumps operate by causing water to move centrifugally as a result of the rotation of an impeller. Before the water pump is started, the pump shell and the water suction pipe are filled with water, then the motor is started, the pump shaft drives the impeller and the water to rotate at a high speed, the water is thrown to the outer edge of the impeller in a centrifugal motion, and flows into a water pressure pipeline of the water pump through a flow channel of the volute-shaped pump shell.
If traditional centrifugal pump impeller wants to reach low discharge high lift, can adopt the structure of closed impeller usually, but the export width of closed impeller is less, and pump operating efficiency is lower, also increased the casting degree of difficulty simultaneously.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model discloses make the improvement to the problem that above-mentioned prior art exists, promptly the utility model discloses a cantilever type centrifugal pump for low discharge high lift, the blade of impeller reduces the casting degree of difficulty for straight blade, and the design of stator formula wear ring has wholly improved pump efficiency.
The technical scheme is as follows: a cantilevered centrifugal pump for small flow high lift comprising:
the guide vane type wear-resisting ring is characterized in that a first side of the guide vane type wear-resisting ring is inwards provided with an accommodating space for accommodating an impeller in a concave mode, and the peripheral surface of the first side is uniformly provided with a plurality of guide vane type flow channels;
the impeller is arranged in the accommodating space of the guide vane type wear-resisting ring, a hollow impeller hub is arranged in the middle of the impeller, a plurality of straight blades are uniformly distributed on the peripheral surface of the impeller hub, and the middle of one side of each straight blade is connected with an annular blade cover plate.
Furthermore, 2-6 guide vane type flow channels are uniformly arranged on the outer peripheral surface of the first side of the guide vane type wear-resisting ring.
Furthermore, 2-16 straight blades are uniformly distributed on the peripheral surface of an impeller hub of the impeller.
Furthermore, the impeller also comprises a rotating shaft, and one end of the rotating shaft penetrates through the impeller hub to be connected with the impeller through an impeller nut.
Furthermore, an O-shaped sealing ring for the impeller nut is arranged between the impeller nut and the guide vane type wear-resisting ring.
Furthermore, the pump comprises a pump shell and a pump cover, wherein the second side of the guide vane type wear-resistant ring is embedded in the pump shell and is connected with the adjusting nut through the adjusting bolt, and the first side of the guide vane type wear-resistant ring is connected with the pump cover.
Furthermore, a first O-shaped sealing ring is arranged between the front part of the second side of the guide vane type wear-resistant ring and the pump shell, a third O-shaped sealing ring is arranged between the middle part of the second side of the guide vane type wear-resistant ring and the pump shell, a second O-shaped sealing ring is arranged between the adjusting bolt and the pump shell, and a fourth O-shaped sealing ring is arranged between the pump cover and the pump shell.
Further, the pump further comprises an intermediate connecting frame, and the intermediate connecting frame is connected with the pump shell through a first bolt.
And furthermore, the device also comprises a bearing unit, one end of the bearing unit is connected with the middle connecting frame through a bolt, the other end of the rotating shaft penetrates through the bearing unit, and an oil seal is arranged between the rotating shaft and the other end of the bearing unit.
Further, the bearing unit further comprises a support leg which is fixed on the bottom side of the bearing unit through a second bolt.
Has the advantages that: the utility model discloses a cantilever type centrifugal pump for small flow and high lift, which has the following beneficial effects;
1. the blades of the impeller are in a straight blade form, so that the casting difficulty is reduced;
2. the guide vane type wear-resistant ring is provided with a guide vane type flow passage, so that the pump efficiency is improved;
3. the guide vane type wear-resistant ring is provided with an adjusting bolt, so that the gap between the impeller and the wear-resistant ring can be dynamically adjusted, and the performance parameters of the pump are improved;
4. the bearing unit is provided with the support legs, so that the integral rigidity of the bearing unit is improved.
Drawings
Fig. 1 is a schematic perspective view of a cantilever centrifugal pump for small flow and high lift disclosed in the present invention;
FIG. 2 is an axial cross-sectional view of FIG. 1;
FIG. 3 is a schematic view of a pump casing;
FIG. 4 is a schematic view of a vane wear ring;
FIG. 5 is a schematic view of another angle of the vane wear ring;
FIG. 6 is a schematic view of an impeller;
FIG. 7 is a schematic view of a pump cap;
FIG. 8 is a schematic view of an intermediate link frame;
FIG. 9 is a schematic view of a bearing unit;
FIG. 10 is a schematic view of a foot;
FIG. 11 is a schematic view of a rotating shaft;
FIG. 12 is a schematic view of an oil seal;
wherein:
| 1-Pump housing | 2-first O-shaped sealing ring |
| 3-adjusting bolt | 4-adjusting nut |
| 5-second O-shaped sealing ring | 6-third O-shaped sealing ring |
| 7-guide vane type wear-resisting ring | 8-impeller |
| 9-impeller nut | O-shaped sealing ring for 10-impeller nut |
| 11-Pump lid | 12-intermediate connecting frame |
| 13-first bolt | 14-bearing unit |
| 15-support leg | 16-second bolt |
| 17-rotating shaft | 18-oil seal |
| 19-guide vane type flow passage | |
| 21-straight blade | 22-blade cover plate |
The specific implementation mode is as follows:
the following describes the embodiments of the present invention in detail.
Detailed description of the preferred embodiment 1
As shown in fig. 1 to 12, a cantilever centrifugal pump for small flow high lift comprises:
the guide vane type wear-resisting ring 7 is provided with a containing space for containing the impeller 8 in an inwards concave manner on the first side, and a plurality of guide vane type flow passages 19 are uniformly arranged on the peripheral surface of the first side;
the impeller 8 is arranged in the accommodating space of the guide vane type wear-resisting ring 7, a hollow impeller hub is arranged in the middle of the impeller 8, a plurality of straight blades 21 are uniformly distributed on the peripheral surface of the impeller hub, and the middle of one side of each straight blade 21 is connected with an annular blade cover plate 22.
Furthermore, 2 guide vane type flow passages 19 are uniformly arranged on the outer peripheral surface of the first side of the guide vane type wear-resisting ring 7.
Further, 12 straight blades 21 are uniformly distributed on the outer peripheral surface of the impeller hub of the impeller 8.
Further, the device also comprises a rotating shaft 17, and one end of the rotating shaft 17 penetrates through the impeller hub to be connected with the impeller 8 through an impeller nut 9.
Further, an O-ring 10 for an impeller nut is provided between the impeller nut 9 and the guide vane wear ring 7.
Further, still include pump case 1 and pump cover 11, the second side of guide vane formula wear-resisting ring 7 inlays to be located in pump case 1 and link to each other with adjusting nut 4 through adjusting bolt 3, the first side of guide vane formula wear-resisting ring 7 with pump cover 11 links to each other.
Further, a first O-ring 2 is arranged between the front portion of the second side of the guide vane type wear-resistant ring 7 and the pump case 1, a third O-ring 6 is arranged between the middle portion of the second side of the guide vane type wear-resistant ring 7 and the pump case 1, a second O-ring 5 is arranged between the adjusting bolt 3 and the pump case 1, and a fourth O-ring (not shown) is arranged between the pump cover 11 and the pump case 1.
Further, the pump shell further comprises an intermediate connecting frame 12, and the intermediate connecting frame 12 is connected with the pump shell 1 through a first bolt 13.
Further, the bearing unit 14 is further included, one end of the bearing unit 14 is connected with the intermediate connecting frame 12 through a bolt, the other end of the rotating shaft 17 penetrates through the bearing unit 14, and an oil seal 18 is arranged between the rotating shaft 17 and the other end of the bearing unit 14.
Further, a support leg 15 is included, and the support leg 15 is fixed to the bottom side of the bearing unit 14 through a second bolt 16.
Specific example 2
Is substantially the same as embodiment 1 except that:
the peripheral surface of the first side of the guide vane type wear-resisting ring 7 is uniformly provided with 4 guide vane type flow passages 19.
2 straight blades 21 are uniformly distributed on the peripheral surface of an impeller hub of the impeller 8.
Specific example 3
Is substantially the same as embodiment 1 except that:
the peripheral surface of the first side of the guide vane type wear-resisting ring 7 is uniformly provided with 6 guide vane type flow passages 19.
16 straight blades 21 are uniformly distributed on the peripheral surface of an impeller hub of the impeller 8.
The embodiments of the present invention have been described in detail. However, the present invention is not limited to the above embodiment, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A cantilever centrifugal pump for low flow high lift comprising:
the guide vane type wear-resisting ring is characterized in that a first side of the guide vane type wear-resisting ring is inwards provided with an accommodating space for accommodating an impeller in a concave mode, and the peripheral surface of the first side is uniformly provided with a plurality of guide vane type flow channels;
the impeller is arranged in the accommodating space of the guide vane type wear-resisting ring, a hollow impeller hub is arranged in the middle of the impeller, a plurality of straight blades are uniformly distributed on the peripheral surface of the impeller hub, and the middle of one side of each straight blade is connected with an annular blade cover plate.
2. The cantilever-type centrifugal pump for small flow and high lift as claimed in claim 1, wherein the outer peripheral surface of the first side of said vane-type wear-resistant ring is uniformly provided with 2-6 vane-type flow passages.
3. The cantilever centrifugal pump for small flow and high lift according to claim 1, wherein 2-16 straight blades are uniformly arranged on the outer peripheral surface of the impeller hub of the impeller.
4. The cantilever-type centrifugal pump for small flow high lift according to claim 1, further comprising a rotating shaft, one end of which passes through the impeller hub and is connected to the impeller by an impeller nut.
5. The cantilever-type centrifugal pump for small flow and high lift according to claim 4, wherein an O-ring for impeller nut is provided between said impeller nut and said vane-type wear ring.
6. The cantilever-type centrifugal pump for small flow and high lift of claim 4, further comprising a pump casing and a pump cover, wherein the second side of the vane-type wear ring is embedded in the pump casing and connected with the adjusting nut through the adjusting bolt, and the first side of the vane-type wear ring is connected with the pump cover.
7. The cantilever centrifugal pump for small flow and high lift according to claim 6, wherein a first O-ring is disposed between the front portion of the second side of the vane-type wear ring and the pump casing, a third O-ring is disposed between the middle portion of the second side of the vane-type wear ring and the pump casing, a second O-ring is disposed between the adjusting bolt and the pump casing, and a fourth O-ring is disposed between the pump cover and the pump casing.
8. The cantilever-type centrifugal pump for small flow and high lift according to claim 7, further comprising an intermediate link frame, said intermediate link frame being connected to said pump casing by a first bolt.
9. The cantilever-type centrifugal pump for small flow and high lift according to claim 8, further comprising a bearing unit, one end of which is connected to the intermediate link via a bolt, the other end of the rotating shaft passes through the bearing unit, and an oil seal is provided between the rotating shaft and the other end of the bearing unit.
10. The cantilever centrifugal pump for small flow high lift according to claim 9, further comprising a leg fixed to the bottom side of said bearing unit by a second bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222003822.8U CN217682310U (en) | 2022-08-01 | 2022-08-01 | Cantilever type centrifugal pump for small flow and high lift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222003822.8U CN217682310U (en) | 2022-08-01 | 2022-08-01 | Cantilever type centrifugal pump for small flow and high lift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217682310U true CN217682310U (en) | 2022-10-28 |
Family
ID=83718999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222003822.8U Active CN217682310U (en) | 2022-08-01 | 2022-08-01 | Cantilever type centrifugal pump for small flow and high lift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217682310U (en) |
-
2022
- 2022-08-01 CN CN202222003822.8U patent/CN217682310U/en active Active
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