CN220600082U - High-flow centrifugal pump shell and centrifugal pump - Google Patents
High-flow centrifugal pump shell and centrifugal pump Download PDFInfo
- Publication number
- CN220600082U CN220600082U CN202322253651.9U CN202322253651U CN220600082U CN 220600082 U CN220600082 U CN 220600082U CN 202322253651 U CN202322253651 U CN 202322253651U CN 220600082 U CN220600082 U CN 220600082U
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- water outlet
- reinforcing rib
- section
- outlet section
- centrifugal pump
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 230000003014 reinforcing effect Effects 0.000 claims description 43
- 238000012423 maintenance Methods 0.000 claims description 11
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of water pumps, in particular to a large-flow centrifugal pump shell and a centrifugal pump, which comprises a large pump shell body, wherein a water inlet section and a water outlet section are arranged on the large pump shell body, an annular guide ring which forms a volute flow channel with the large pump shell body is arranged in the large pump shell body, the annular guide ring is in an arch shape with the middle part bent upwards, the section of the volute flow channel is in a circular shape with a notch, the inner ring of the annular guide ring is in a circular shape, and the diameter of the annular guide ring is 1.03 times to 1.08 times of the outer diameter of a small impeller. The annular guide ring has small gap with the small impeller, small hydraulic loss and high centrifugal pump efficiency.
Description
Technical field:
the utility model belongs to the technical field of water pumps, and particularly relates to a pump shell of a high-flow centrifugal pump and the centrifugal pump.
The background technology is as follows:
the centrifugal pump is a pumping machine utilizing centrifugal movement of water, and comprises a pump shell, an impeller and a motor, wherein a rotating shaft of the motor drives the impeller to rotate, the impeller drives water in the pump shell to rotate at a high speed, the water is centrifugally moved and thrown to the outer edge of the impeller, and is discharged from a water outlet section through a runner of the volute pump shell, after the water is thrown out, the pressure near the impeller is reduced to form a low-pressure area, and outside water enters the pump shell under the action of atmospheric pressure.
The shape and the size of the impeller of the existing centrifugal pump are generally matched with those of the pump shell, the small impeller is matched with the small pump shell, and the large impeller is matched with the large pump shell. In order to increase the flow rate of a centrifugal pump with a small impeller, as shown in fig. 1 and 2, the small impeller 1 is placed in a large pump shell 2, a large gap 3 exists between the inner diameter of the large pump shell 2 and the outer diameter of the small impeller 1, and in the working process of the centrifugal pump, the hydraulic loss caused by the gap 3 is large, namely the efficiency of the centrifugal pump is not high.
The utility model comprises the following steps:
the utility model aims to provide a pump shell of a high-flow centrifugal pump and the centrifugal pump, wherein the gap between an annular guide ring and a small impeller is small, the hydraulic loss is small, and the efficiency of the centrifugal pump is high.
The utility model is realized in the following way:
one of the purposes of the utility model is to provide a large-flow centrifugal pump shell, which comprises a large pump shell body, wherein a water inlet section and a water outlet section are arranged on the large pump shell body, an annular guide ring which forms a volute flow channel with the large pump shell body is arranged in the large pump shell body, the annular guide ring is in an arch shape with the middle part bent upwards, the section of the volute flow channel is in a circular shape with a notch, the inner ring of the annular guide ring is in a circular shape, and the diameter of the annular guide ring is 1.03 times to 1.08 times of the outer diameter of a small impeller.
In the pump casing of the high-flow centrifugal pump, the inner ring side wall of the annular guide ring extends upwards along the axial direction of the annular guide ring to form a guide cylinder.
In the pump casing of the high-flow centrifugal pump, the water outlet section is provided with the mounting hole for mounting the temperature sensor.
In the pump casing of the high-flow centrifugal pump, the side wall of the main body of the large pump casing is provided with the maintenance hole communicated with the inner cavity, and the maintenance hole is detachably connected with the screw.
In the pump casing of the high-flow centrifugal pump, the water inlet section and the water outlet section are positioned on the same straight line, the water inlet section is communicated with the bottom of the main body of the high-flow centrifugal pump, and the outer end of the water outlet section is provided with the threaded connection section.
In the pump shell of the high-flow centrifugal pump, a vertical reinforcing rib plate connected with the water inlet section and the water outlet section is arranged below the main body of the high-flow centrifugal pump, and one end of the vertical reinforcing rib plate connected with the water outlet section extends to the joint of the water outlet section and the threaded connection section.
In the pump shell of the high-flow centrifugal pump, a transverse reinforcing rib plate is connected between the main pump shell body and the water outlet section, is positioned at the outer side edges of the main pump shell body and the water outlet section and is positioned in the middle of the water outlet section, and one end of the water outlet section connected with the transverse reinforcing rib plate extends to the joint of the water outlet section and the threaded connection section.
In the pump casing of the high-flow centrifugal pump, one end of the transverse reinforcing rib plate connected with the main body of the large pump casing extends to one side of the main body of the large pump casing to form a reinforcing rib strip I surrounding the main body of the large pump casing, and one end of the reinforcing rib strip I is connected with the transverse reinforcing rib plate while the other end is connected with the water inlet section.
In the pump casing of the high-flow centrifugal pump, a reinforcing rib strip II is arranged above the water outlet section, one end of the reinforcing rib strip II is connected with the main body of the high-flow centrifugal pump, and the other end of the reinforcing rib strip II extends to the joint of the water outlet section and the threaded connection section.
In the pump casing of the high-flow centrifugal pump, the diameter of the inner ring of the annular guide ring is 1.05 times of the outer diameter of the small impeller.
It is another object of the present utility model to provide a centrifugal pump comprising a high flow centrifugal pump casing as described above.
Compared with the prior art, the utility model has the outstanding advantages that:
1. the large pump shell body and the annular guide ring form a volute flow channel, the diameter of the annular guide ring is 1.03-1.08 times of the outer diameter of the small impeller, the gap between the annular guide ring and the small impeller is small, the hydraulic loss is small, and the centrifugal pump efficiency is high; the annular flow guide ring is of an arch shape with the middle part bent upwards, the section of the volute flow channel is of a round shape with a notch, and the flow guide effect is good;
2. according to the utility model, the vertical reinforcing rib plate which is connected with the water inlet section and the water outlet section is arranged below the large pump shell body, so that the strength of the water outlet section is effectively enhanced, and the water outlet section is prevented from being bent vertically; a transverse reinforcing rib plate is connected between the large pump shell body and the water outlet section, and is positioned on the outer side edges of the large pump shell body and the water outlet section, so that the strength of the water outlet section is effectively enhanced, and the water outlet section is prevented from being bent along the transverse direction;
3. according to the utility model, one end of the transverse reinforcing rib plate connected with the large pump shell body extends to one side of the large pump shell body to form the reinforcing rib strip I which is arranged around the periphery of the large pump shell body, so that the strength of the side wall of the large pump shell body is effectively enhanced.
Description of the drawings:
FIG. 1 is a perspective view of the prior art;
FIG. 2 is a cross-sectional view of the prior art;
FIG. 3 is a perspective view of the pump housing and small impeller of the present utility model;
FIG. 4 is a cross-sectional view of the pump housing and small impeller of the present utility model;
FIG. 5 is a perspective view of the pump housing of the present utility model;
fig. 6 is a second perspective view of the pump housing of the present utility model.
Reference numerals:
in fig. 1-2: 1. a small impeller; 2. a large pump housing; 3. a gap.
Fig. 3-in: 11. a large pump housing body; 12. a water inlet section; 13. a water outlet section; 14. a volute flow path; 15. an annular guide ring; 16. a small impeller; 17. a guide cylinder; 18. a mounting hole; 19. a maintenance hole; 20. a threaded connection section; 21. vertical reinforcing rib plates; 22. a transverse reinforcing rib plate; 23. reinforcing ribs I; 24. reinforcing ribs II.
The specific embodiment is as follows:
the utility model is further described below with reference to the specific examples, see fig. 3-6:
one of the purposes of the utility model is to provide a large-flow centrifugal pump shell, which comprises a large pump shell body 11, wherein a water inlet section 12 and a water outlet section 13 are arranged on the large pump shell body 11, an annular guide ring 15 forming a volute flow channel 14 with the large pump shell body 11 is arranged in the large pump shell body 11, the annular guide ring 15 is an arch with an upward bent middle part, the section of the volute flow channel 14 is a circle with a notch, the inner ring of the annular guide ring 15 is a circle, and the diameter of the annular guide ring is 1.03 times to 1.08 times of the outer diameter of a small impeller 16.
As shown in fig. 3-6, the large pump shell body 11 and the annular guide ring 15 form a volute flow channel 14, the diameter of the annular guide ring 15 is 1.03-1.08 times of the outer diameter of the small impeller 16, the gap between the annular guide ring 15 and the small impeller 16 is small, the hydraulic loss is small, and the centrifugal pump efficiency is high; the annular flow guide ring 15 is an arch with the middle part bent upwards, the section of the volute flow channel 14 is round with a notch, and the flow guide effect is good.
In order to seal the inner cavity of the large pump casing body 11, as shown in fig. 3-5, the inner side wall of the annular guide ring 15 extends upwards along the axial direction to form a guide cylinder 17.
Further, the water outlet section 13 is provided with a mounting hole 18 for mounting a temperature sensor, as shown in fig. 3-5. The temperature sensor is used for detecting the water outlet temperature of the centrifugal pump, and when the temperature sensor detects that the water outlet temperature is higher than a set value in the hot water circulation equipment such as floor heating and the like, the centrifugal pump stops working and hot water circulation is stopped; when the temperature sensor detects that the outlet water temperature is lower than the set value, the centrifugal pump starts to work, and hot water starts to circulate.
In order to facilitate maintenance, as shown in fig. 3, a maintenance hole 19 communicating with the inner cavity is provided on the side wall of the large pump housing body 11, and the maintenance hole 19 is detachably connected with a screw. During maintenance, the screw is removed, and the maintenance rod can extend into the large pump shell body 11 from the maintenance hole 19 to tamper with the small impeller 16.
Distribution structure of water inlet section 12 and water outlet section 13: as shown in fig. 3-6, the water inlet section 12 and the water outlet section 13 are positioned on the same straight line, the water inlet section 12 is communicated with the bottom of the large pump shell body 11, and the outer end of the water outlet section 13 is provided with a threaded connection section 20.
In order to strengthen the strength of the water outlet section 13 and prevent the water outlet section 13 from being bent vertically, as shown in fig. 6, a vertical reinforcing rib plate 21 for connecting the water inlet section 12 and the water outlet section 13 is arranged below the large pump casing body 11, and one end of the vertical reinforcing rib plate 21 connected with the water outlet section 13 extends to the connection position of the water outlet section 13 and the threaded connection section 20.
In order to strengthen the strength of the water outlet section 13 and prevent the water outlet section 13 from being bent transversely, as shown in fig. 3, 5 and 6, a transverse reinforcing rib plate 22 is connected between the large pump casing body 11 and the water outlet section 13, the transverse reinforcing rib plate 22 is positioned on the outer sides of the large pump casing body 11 and the water outlet section 13 and is positioned in the middle of the water outlet section 13, and one end of the water outlet section 13 connected with the transverse reinforcing rib plate 22 extends to the joint of the water outlet section 13 and the threaded connection section 20.
In order to strengthen the side wall of the large pump casing body 11, as shown in fig. 6, one end of the transverse reinforcing rib plate 22 connected with the large pump casing body 11 extends to one side of the large pump casing body 11 to form a reinforcing rib strip one 23 surrounding the periphery of the large pump casing body 11, and one end of the reinforcing rib strip one 23 is connected with the transverse reinforcing rib plate 22, and the other end is connected with the water inlet section 12.
In order to strengthen the strength of the water outlet section 13 and prevent the water outlet section 13 from being bent vertically, as shown in fig. 3 and 5, a second reinforcing rib 24 is arranged above the water outlet section 13, one end of the second reinforcing rib 24 is connected with the large pump casing body 11, and the other end extends to the joint of the water outlet section 13 and the threaded connection section 20.
Preferably, the diameter of the inner ring of the annular guide ring 15 is 1.05 times of the outer diameter of the small impeller 16.
It is another object of the present utility model to provide a centrifugal pump comprising a high flow centrifugal pump casing as described above.
The centrifugal pump also comprises a small impeller 16 arranged in the large pump shell body 11 and a motor arranged above the large pump shell body 11, wherein a rotating shaft of the motor is fixedly connected with the small impeller 16, and the rotating shaft of the motor rotates to drive the small impeller 16 to rotate.
The above embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of the present utility model, therefore: all equivalent changes in shape, structure and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (10)
1. The utility model provides a large-traffic centrifugal pump case, includes big pump case body (11), be equipped with water inlet section (12) and play water section (13) on big pump case body (11), its characterized in that: an annular guide ring (15) forming a volute flow passage (14) with the large pump shell body (11) is arranged in the large pump shell body (11), the annular guide ring (15) is of an arch shape with the middle part bent upwards, the section of the volute flow passage (14) is of a round shape with a notch, the inner ring of the annular guide ring (15) is of a round shape, and the diameter of the inner ring is 1.03-1.08 times of the outer diameter of the small impeller (16).
2. A high flow centrifugal pump casing according to claim 1, wherein: the side wall of the inner ring of the annular guide ring (15) extends upwards along the axial direction of the annular guide ring to form a guide cylinder (17).
3. A high flow centrifugal pump casing according to claim 1, wherein: the water outlet section (13) is provided with a mounting hole (18) for mounting a temperature sensor.
4. A high flow centrifugal pump casing according to claim 1, wherein: the side wall of the large pump shell body (11) is provided with a maintenance hole (19) communicated with the inner cavity, and the maintenance hole (19) is detachably connected with a screw.
5. A high flow centrifugal pump casing according to claim 1, wherein: the water inlet section (12) and the water outlet section (13) are positioned on the same straight line, the water inlet section (12) is communicated with the bottom of the large pump shell body (11), and the outer end of the water outlet section (13) is provided with a threaded connection section (20).
6. A high flow centrifugal pump casing according to claim 5, wherein: the pump is characterized in that a vertical reinforcing rib plate (21) connected with the water inlet section (12) and the water outlet section (13) is arranged below the large pump shell body (11), and one end of the vertical reinforcing rib plate (21) connected with the water outlet section (13) extends to the joint of the water outlet section (13) and the threaded connection section (20).
7. A high flow centrifugal pump casing according to claim 5, wherein: the novel pump is characterized in that a transverse reinforcing rib plate (22) is connected between the large pump shell body (11) and the water outlet section (13), the transverse reinforcing rib plate (22) is positioned on the outer side edges of the large pump shell body (11) and the water outlet section (13) and is positioned in the middle of the water outlet section (13), and one end of the transverse reinforcing rib plate (22) connected with the water outlet section (13) extends to the joint of the water outlet section (13) and the threaded connection section (20).
8. A high flow centrifugal pump casing according to claim 7, wherein: one end of the transverse reinforcing rib plate (22) connected with the large pump shell body (11) extends to one side of the large pump shell body (11) to form a reinforcing rib strip I (23) which is arranged on the periphery of the large pump shell body (11) in a surrounding mode, one end of the reinforcing rib strip I (23) is connected with the transverse reinforcing rib plate (22), and the other end of the reinforcing rib strip I is connected with the water inlet section (12).
9. A high flow centrifugal pump casing according to claim 5, wherein: and a second reinforcing rib (24) is arranged above the water outlet section (13), one end of the second reinforcing rib (24) is connected with the large pump shell body (11), and the other end of the second reinforcing rib extends to the joint of the water outlet section (13) and the threaded connecting section (20).
10. A centrifugal pump, characterized in that: a high flow centrifugal pump casing comprising a pump according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322253651.9U CN220600082U (en) | 2023-08-21 | 2023-08-21 | High-flow centrifugal pump shell and centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322253651.9U CN220600082U (en) | 2023-08-21 | 2023-08-21 | High-flow centrifugal pump shell and centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220600082U true CN220600082U (en) | 2024-03-15 |
Family
ID=90170961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322253651.9U Active CN220600082U (en) | 2023-08-21 | 2023-08-21 | High-flow centrifugal pump shell and centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220600082U (en) |
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2023
- 2023-08-21 CN CN202322253651.9U patent/CN220600082U/en active Active
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