CN117249091A - High-lift multistage centrifugal pump - Google Patents
High-lift multistage centrifugal pump Download PDFInfo
- Publication number
- CN117249091A CN117249091A CN202311468399.1A CN202311468399A CN117249091A CN 117249091 A CN117249091 A CN 117249091A CN 202311468399 A CN202311468399 A CN 202311468399A CN 117249091 A CN117249091 A CN 117249091A
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- China
- Prior art keywords
- centrifugal
- centrifugal pump
- vane
- centrifugal rotary
- rotary
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- 239000007788 liquid Substances 0.000 claims abstract description 42
- 230000005540 biological transmission Effects 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 7
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 22
- 238000005086 pumping Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 8
- 230000001133 acceleration Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
- F04D1/08—Multi-stage pumps the stages being situated concentrically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a large-lift multistage centrifugal pump, which comprises: the centrifugal pump box, driving motor and rotation are installed in centrifugal turbine and the axial-flow spin pole of centrifugal pump box inboard, the surface of centrifugal pump box is equipped with the pump cover, the liquid inlet has been seted up on the surface of pump cover and is located the liquid outlet of pump cover periphery side, the inboard of liquid inlet is equipped with the bearing bracket, centrifugal turbine includes carousel seat, water conservancy diversion lid and is fixed in a plurality of first centrifugal spin leaf and the second centrifugal spin leaf of carousel seat surface, first centrifugal spin leaf and second centrifugal spin leaf are circumferencial direction evenly distributed and are concentric ring arrangement. According to the invention, the multistage centrifugal structure is arranged, the driving motor is used for driving the centrifugal turbine and the axial-flow rotary rod to synchronously rotate in opposite directions, boosting and centrifugal pumping are carried out on a conveying medium, and the multistage pumping is realized by arranging the centrifugal turbine structure, so that water liquid stably flows into the centrifugal pump box, efficient pumping is carried out, and the lift quantity is improved.
Description
Technical Field
The invention relates to the technical field of centrifugal pumps, in particular to a high-lift multistage centrifugal pump.
Background
Centrifugal pumps for delivering fluids, such as liquids like water, are used in many different industries. Examples are the oil and gas industry, the power generation industry, the chemical industry, the water industry or the pulp and paper industry. For many applications, centrifugal pumps are configured as multi-stage pumps having multiple impellers, i.e., at least a first stage impeller and a last stage impeller, and optionally one or more intermediate stage impellers. All impellers are arranged one after the other on a shaft arranged for rotating the impellers.
The existing centrifugal pump needs to adopt a multistage centrifugal treatment mode to improve the lift, but adopts a multi-turbine parallel arrangement mode to not only seriously increase the volume of the centrifugal pump, but also adopts a multistage parallel turbine structure, so that a medium only has an axial flow effect between two stages of turbines, the rotational flow centrifugal effect disappears, the next stage of turbine is required to continue to carry out centrifugal pumping of the medium, most of mechanical energy is converted into mechanical energy for changing the flow direction of the medium, only a small part of mechanical energy is converted into centrifugal pumping thrust of the medium, and after multistage centrifugation, the effect is still lower, and the energy utilization rate is low. In view of the above, the present invention provides a high-lift multistage centrifugal pump which solves the existing problems and aims to solve the problems and improve the practical value by the technology.
Disclosure of Invention
The present invention aims to solve one of the technical problems existing in the prior art or related technologies.
The technical scheme adopted by the invention is as follows: a high lift multistage centrifugal pump comprising: the centrifugal pump comprises a centrifugal pump box, a driving motor, and a centrifugal turbine and an axial-flow rotary rod which are rotatably arranged on the inner side of the centrifugal pump box, wherein a pump cover is arranged on the surface of the centrifugal pump box, a liquid inlet and a liquid outlet which are arranged on the outer peripheral side of the pump cover are formed in the surface of the pump cover, a bearing bracket is arranged on the inner side of the liquid inlet, the centrifugal turbine comprises a turntable seat, a flow guide cover and a plurality of first centrifugal rotary blades and second centrifugal rotary blades which are fixed on the surface of the turntable seat, the first centrifugal rotary blades and the second centrifugal rotary blades are uniformly distributed in the circumferential direction and are concentrically and annularly arranged, and the flow guide cover is fixedly arranged on the other sides of the first centrifugal rotary blades and the second centrifugal rotary blades;
the axial-flow rotary rod comprises a main shaft rod and a rotational flow blade, wherein the surface of the main shaft rod is provided with a dynamic sealing seat, one end of the dynamic sealing seat is rotationally sleeved on the inner side of the rotary table seat, the rotational flow blade is spirally wound on the surface of the main shaft rod, a driving tooth is fixedly sleeved on the surface of the main shaft rod, a plurality of transmission tooth groups are arranged on the inner side of the centrifugal pump box, a reversing tooth sleeve is fixedly arranged on one side of the rotary table seat, and the reversing tooth sleeve and the driving tooth are respectively in transmission engagement with two sides of the transmission tooth groups.
The present invention may be further configured in a preferred example to: one side of the pump cover is in sealing joint with the surface of the centrifugal pump box, a mechanical seal sleeved on the surface of the main shaft rod is fixedly arranged on the inner side of the centrifugal pump box, and one end of the main shaft rod is fixedly connected with the output end of the driving motor.
The present invention may be further configured in a preferred example to: the periphery of the bearing frame is fixedly provided with a plurality of guide wings, the other ends of the guide wings are fixedly connected with the inner side of the liquid inlet, the sections of the guide wings are in wing-shaped structures, and the bearing frame, the main shaft rod, the turntable seat and the output shaft of the driving motor are positioned on the same straight line.
The present invention may be further configured in a preferred example to: the rotary table seat and the flow guide cover are respectively positioned at two sides of the first centrifugal rotary blade, the first centrifugal rotary blade and the liquid outlet are positioned in the same vertical plane, and the second centrifugal rotor She Cheng is circumferentially arranged at the periphery of the first centrifugal rotary blade.
The present invention may be further configured in a preferred example to: the number of the second centrifugal rotating blades is twice that of the first centrifugal rotating blades and the second centrifugal rotating blades are equally divided into two groups, wherein the end parts of one group of the second centrifugal rotating blades and the end parts of the first centrifugal rotating blades are arranged oppositely in an acute angle, and the other group of the second centrifugal rotating blades are positioned on the middle line of the angle of the adjacent first centrifugal rotating blades She Yuanxin.
The present invention may be further configured in a preferred example to: the first centrifugal rotary blade and the second centrifugal rotary blade are of arc strip structures, the length of the first centrifugal rotary blade is twice that of the second centrifugal rotary blade, and one ends of the first centrifugal rotary blade and the second centrifugal rotary blade, which are close to the circle center of the turntable seat, are arc blunt.
The present invention may be further configured in a preferred example to: the number of the transmission gear groups is a plurality of and evenly distributed in the circumferential direction, the transmission gear groups are arranged in the surface direction of the perpendicular driving gear and the surface direction of the reverse gear sleeve, and the driving gear and the reverse gear sleeve are oppositely arranged.
The present invention may be further configured in a preferred example to: one end of the cyclone blade is provided with a split blade sleeved on the inner side of the liquid inlet, the joint of the split blade and the cyclone blade is in smooth transition, and the split blade and the main shaft rod are arranged in parallel.
The beneficial effects obtained by the invention are as follows:
1. according to the invention, the multistage centrifugal structure is arranged, the driving motor is used for driving the centrifugal turbine and the axial-flow rotary rod to synchronously rotate in opposite directions, boosting and centrifugal pumping are carried out on a conveying medium, and the multistage pumping is realized by arranging the centrifugal turbine structure, so that water liquid stably flows into the centrifugal pump box, efficient pumping is carried out, and the lift quantity is improved.
2. In the invention, the reverse transmission between the reversing tooth sleeve and the driving tooth is carried out by utilizing the transmission tooth group, after the axial flow rotary rod is used for boosting the conveying medium, the conveying medium is contacted with the first centrifugal rotary blade in the centrifugal turbine, and the rotational flow of the medium and the rotation direction of the first centrifugal rotary blade are opposite, so that the relative speed of the medium is improved, the medium output efficiency is obviously improved, and the axial boosting effect of the axial flow rotary rod is obviously and effectively increased in liquid inlet quantity.
3. According to the invention, a novel centrifugal turbine structure is adopted, medium centrifugal conveying is carried out on the inner sides of the turntable seat and the diversion cover through the first centrifugal rotary vane, the relative speed of medium rotational flow and the second centrifugal rotary vane is further improved under the beveling effect of the second centrifugal rotary vane, multistage centrifugation is carried out, and the multistage centrifugal pump effect is realized by a smaller structure.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic side view of an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of an embodiment of the present invention;
FIG. 4 is a schematic view showing the surface structure of a centrifugal pump casing according to an embodiment of the present invention;
FIG. 5 is a schematic view of a centrifugal turbine and axial flow spin-lever configuration of an embodiment of the present invention;
FIG. 6 is a schematic view of an axial flow rotary rod according to an embodiment of the present invention;
FIG. 7 is a schematic view of a surface structure of a turntable seat according to an embodiment of the present invention.
Reference numerals:
100. a centrifugal pump box; 110. a pump cover; 120. a bearing bracket; 130. a drive tooth set; 111. a liquid inlet; 112. a liquid outlet; 121. a guide vane;
200. a driving motor;
300. a centrifugal turbine; 310. a turntable seat; 320. a diversion cover; 330. a first centrifugal rotor blade; 340. a second centrifugal rotor blade; 311. reversing the tooth sleeve;
400. an axial flow rotary rod; 410. a main shaft lever; 420. swirl vanes; 411. a drive tooth; 412. a dynamic seal seat; 421. and (5) splitting the leaves.
Detailed Description
The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present invention and features in the embodiments may be combined with each other.
A large-lift multistage centrifugal pump according to some embodiments of the present invention is described below with reference to the accompanying drawings.
1-7, the large-lift multistage centrifugal pump provided by the invention comprises: the centrifugal pump comprises a centrifugal pump box 100, a driving motor 200, and a centrifugal turbine 300 and an axial-flow rotary rod 400 which are rotatably arranged on the inner side of the centrifugal pump box 100, wherein a pump cover 110 is arranged on the surface of the centrifugal pump box 100, a liquid inlet 111 and a liquid outlet 112 which are positioned on the outer circumferential side of the pump cover 110 are arranged on the surface of the pump cover 110, a bearing bracket 120 is arranged on the inner side of the liquid inlet 111, the centrifugal turbine 300 comprises a turntable seat 310, a flow guide cover 320 and a plurality of first centrifugal rotary vanes 330 and second centrifugal rotary vanes 340 which are fixed on the surface of the turntable seat 310, the first centrifugal rotary vanes 330 and the second centrifugal rotary vanes 340 are uniformly distributed in the circumferential direction and are concentrically arranged, and the flow guide cover 320 is fixedly arranged on the other side of the first centrifugal rotary vanes 330 and the second centrifugal rotary vanes 340;
the axial-flow rotary rod 400 comprises a main shaft rod 410 and a rotational flow blade 420, wherein a dynamic seal seat 412 is arranged on the surface of the main shaft rod 410, one end of the dynamic seal seat 412 is rotatably sleeved on the inner side of the rotary table seat 310, the rotational flow blade 420 is spirally wound on the surface of the main shaft rod 410, driving teeth 411 are fixedly sleeved on the surface of the main shaft rod 410, a plurality of transmission tooth groups 130 are arranged on the inner side of the centrifugal pump box 100, a reversing tooth sleeve 311 is fixedly arranged on one side of the rotary table seat 310, and the reversing tooth sleeve 311 and the driving teeth 411 are respectively in transmission engagement with two sides of the transmission tooth groups 130.
In this embodiment, one side of the pump cover 110 is in sealing engagement with the surface of the centrifugal pump cartridge 100, and the inner side of the centrifugal pump cartridge 100 is fixedly provided with a mechanical seal that is sleeved on the surface of the spindle shaft 410, and one end of the spindle shaft 410 is fixedly connected with the output end of the driving motor 200.
In this embodiment, a plurality of guiding wings 121 are fixedly mounted on the outer periphery of the bearing frame 120, the other ends of the guiding wings 121 are fixedly connected with the inner side of the liquid inlet 111, the sections of the guiding wings 121 are in wing-shaped structures, and the bearing frame 120, the spindle rod 410, the turntable base 310 and the output shaft of the driving motor 200 are positioned on the same straight line.
Specifically, the bearing bracket 120 on the inner side of the liquid outlet 112 is used to support one end of the main shaft 410, and the wing-shaped diversion wing 121 is used to reduce cavitation effect.
In this embodiment, the turntable 310 and the diversion cover 320 are respectively located at two sides of the first centrifugal impeller 330, the first centrifugal impeller 330 and the liquid outlet 112 are located in the same vertical plane, and the second centrifugal impeller 340 is circumferentially arranged on the periphery of the first centrifugal impeller 330.
In this embodiment, the number of the second centrifugal lobes 340 is twice that of the first centrifugal lobes 330 and the second centrifugal lobes are equally divided into two groups, wherein the end portions of one group of the second centrifugal lobes 340 and the end portions of the first centrifugal lobes 330 are arranged in an opposite manner at an acute angle, and the other group of the second centrifugal lobes 340 are located on the central angle middle line of the adjacent first centrifugal lobes 330.
Further, the first centrifugal rotating blade 330 and the second centrifugal rotating blade 340 are both in arc strip structures, the length of the first centrifugal rotating blade 330 is twice that of the second centrifugal rotating blade 340, and one ends of the first centrifugal rotating blade 330 and the second centrifugal rotating blade 340, which are close to the circle center of the turntable seat 310, are arc blunt.
Specifically, the water solution is centrifugally led out along the surface of the first centrifugal rotating blade 330 under the rotation action of the first centrifugal rotating blade 330, so that the water solution has higher centrifugal kinetic energy, the second-stage acceleration work is completed, and after the water solution reaches between the first centrifugal rotating blade 330 and the second centrifugal rotating blade 340, the water solution of directional rotational flow is led out under the tangential movement of the second centrifugal rotating blade 340 through the rotary cutting of the second centrifugal rotating blade 340, and the arc blunt ends of the first centrifugal rotating blade 330 and the second centrifugal rotating blade 340 effectively reduce the influence of cavitation effect.
In this embodiment, the number of the gear teeth sets 130 is several and uniformly distributed in the circumferential direction, the gear teeth sets 130 are arranged perpendicular to the surface directions of the driving teeth 411 and the reversing tooth sleeve 311, and the driving teeth 411 and the reversing tooth sleeve 311 are arranged opposite to each other.
Specifically, the driving teeth 411, the driving teeth 130 and the reversing teeth sleeve 311 are engaged to realize the reverse rotation of the centrifugal turbine 300 and the axial flow rotary rod 400, and under the rotation of the rotational flow blades 420, the water is axially conveyed into the centrifugal turbine 300, and is centrifugally pumped through the reverse rotation of the centrifugal turbine 300.
In this embodiment, one end of the swirl vane 420 is provided with a split vane 421 sleeved on the inner side of the liquid inlet 111, the connection between the split vane 421 and the swirl vane 420 transitions smoothly, and the split vane 421 and the spindle shaft 410 are arranged parallel to each other.
Specifically, the inner side of the liquid inlet 111 is divided into a plurality of independent sections by the plurality of dividing blades 421 to guide the water, so that the conveying medium stably flows to avoid the influence of turbulence.
The working principle and the using flow of the invention are as follows:
in the working process of the multistage centrifugal pump, a liquid inlet 111 and a liquid outlet 112 are respectively communicated with a liquid inlet pipe and a liquid outlet pipe, and water is guided into and uniformly dispersed to flow along the surface of a rotational flow blade 420 in a rotating motion after being combed by a guide vane 121, so that the water is pushed axially and accelerated to enter between a turntable seat 310 and a guide cover 320, and the primary acceleration is realized;
under the rotation action of the first centrifugal rotating blade 330, the water liquid is centrifugally guided out along the surface of the first centrifugal rotating blade 330, so that the water liquid has higher centrifugal kinetic energy, the second-stage acceleration work is completed, after the water liquid reaches between the first centrifugal rotating blade 330 and the second centrifugal rotating blade 340, the water liquid with directional rotational flow is guided out under the tangential motion of the second centrifugal rotating blade 340 through the rotary cutting of the second centrifugal rotating blade 340, the carded water liquid flows and the centrifugal output of the water liquid is carried out again, and the water liquid is guided out through the liquid outlet 112; under the operation of the driving motor 200, the axial-flow rotary rod 400 synchronously rotates along with the output shaft of the driving motor 200, the driving teeth 411 rotate and mesh with the plurality of transmission teeth groups 130, so that the transmission teeth groups 130 rotate, the reversing tooth sleeve 311 drives the centrifugal turbine 300 to integrally rotate inside the centrifugal pump box 100 through meshing with the transmission teeth groups 130, the rotation directions of the axial-flow rotary rod 400 and the centrifugal turbine 300 are opposite, the reversing tooth sleeve 311 and the driving teeth 411 are reversely driven by the transmission teeth groups 130, after the axial-flow rotary rod 400 is used for boosting the water conveying liquid, the axial-flow rotary rod 400 contacts with the first centrifugal rotary blades 330 inside the centrifugal turbine 300, and the rotational directions of the rotational flow of media and the first centrifugal rotary blades 330 are opposite, so that the relative speed of the centrifugal turbine 300 is improved, and the water output efficiency is remarkably improved.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (8)
1. A high lift multistage centrifugal pump comprising: the centrifugal pump comprises a centrifugal pump box (100), a driving motor (200) and a centrifugal turbine (300) and an axial-flow rotary rod (400) which are rotatably arranged on the inner side of the centrifugal pump box (100), wherein a pump cover (110) is arranged on the surface of the centrifugal pump box (100), a liquid inlet (111) and a liquid outlet (112) which is arranged on the outer peripheral side of the pump cover (110) are formed in the surface of the pump cover (110), a bearing bracket (120) is arranged on the inner side of the liquid inlet (111), the centrifugal turbine (300) comprises a turntable seat (310), a flow guide cover (320) and a plurality of first centrifugal rotary blades (330) and second centrifugal rotary blades (340) which are fixed on the surface of the turntable seat (310), and the first centrifugal rotary blades (330) and the second centrifugal rotary blades (340) are uniformly distributed in the circumferential direction and are concentrically arranged in a ring shape, and the flow guide cover (320) is fixedly arranged on the other side of the first centrifugal rotary blades (330) and the second centrifugal rotary blades (340).
The axial-flow rotary rod (400) comprises a main shaft rod (410) and a rotational flow blade (420), wherein a dynamic sealing seat (412) is arranged on the surface of the main shaft rod (410), one end of the dynamic sealing seat (412) is rotatably sleeved on the inner side of a rotary table seat (310), the rotational flow blade (420) is spirally wound on the surface of the main shaft rod (410), driving teeth (411) are fixedly sleeved on the surface of the main shaft rod (410), a plurality of transmission tooth groups (130) are arranged on the inner side of a centrifugal pump box (100), a reversing tooth sleeve (311) is fixedly arranged on one side of the rotary table seat (310), and the reversing tooth sleeve (311) and the driving teeth (411) are respectively meshed with two sides of the transmission tooth groups (130) in a transmission mode.
2. The high-lift multistage centrifugal pump according to claim 1, wherein one side of the pump cover (110) is in sealing engagement with the surface of the centrifugal pump box (100), a mechanical seal sleeved on the surface of the spindle rod (410) is fixedly mounted on the inner side of the centrifugal pump box (100), and one end of the spindle rod (410) is fixedly connected with the output end of the driving motor (200).
3. The large-lift multistage centrifugal pump according to claim 1, wherein a plurality of guide wings (121) are fixedly installed on the periphery of the bearing frame (120), the other ends of the guide wings (121) are fixedly connected with the inner side of the liquid inlet (111), the cross sections of the guide wings (121) are in wing-shaped structures, and the bearing frame (120), the main shaft rod (410), the turntable seat (310) and the output shaft of the driving motor (200) are positioned on the same straight line.
4. The high-lift multistage centrifugal pump according to claim 1, wherein the turntable base (310) and the flow guiding cover (320) are respectively located at two sides of the first centrifugal rotary vane (330), the first centrifugal rotary vane (330) and the liquid outlet (112) are located in the same vertical plane, and the second centrifugal rotary vane (340) is circumferentially arranged at the periphery of the first centrifugal rotary vane (330).
5. The high-lift multistage centrifugal pump according to claim 1, wherein the number of the second centrifugal rotary blades (340) is twice that of the first centrifugal rotary blades (330) and the second centrifugal rotary blades are equally divided into two groups, wherein the end parts of one group of the second centrifugal rotary blades (340) and the end parts of the first centrifugal rotary blades (330) are oppositely arranged at an acute angle, and the other group of the second centrifugal rotary blades (340) are positioned on the central angle central line of the adjacent first centrifugal rotary blades (330).
6. The high-lift multistage centrifugal pump according to claim 1, wherein the first centrifugal rotary vane (330) and the second centrifugal rotary vane (340) are of arc-shaped structures, the length of the first centrifugal rotary vane (330) is twice that of the second centrifugal rotary vane (340), and one ends of the first centrifugal rotary vane (330) and the second centrifugal rotary vane (340) close to the center of the circle of the turntable seat (310) are arc blunt.
7. The large-lift multistage centrifugal pump according to claim 1, wherein the number of the transmission gear groups (130) is a plurality and the transmission gear groups (130) are uniformly distributed in the circumferential direction, the transmission gear groups (130) are arranged in the surface direction of the vertical driving gear (411) and the reverse gear sleeve (311), and the driving gear (411) and the reverse gear sleeve (311) are arranged oppositely.
8. The high-lift multistage centrifugal pump according to claim 1, wherein one end of the swirl vane (420) is provided with a split vane (421) sleeved on the inner side of the liquid inlet (111), the connection part of the split vane (421) and the swirl vane (420) is in smooth transition, and the split vane (421) and the main shaft (410) are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311468399.1A CN117249091A (en) | 2023-11-07 | 2023-11-07 | High-lift multistage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311468399.1A CN117249091A (en) | 2023-11-07 | 2023-11-07 | High-lift multistage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117249091A true CN117249091A (en) | 2023-12-19 |
Family
ID=89126576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311468399.1A Pending CN117249091A (en) | 2023-11-07 | 2023-11-07 | High-lift multistage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117249091A (en) |
-
2023
- 2023-11-07 CN CN202311468399.1A patent/CN117249091A/en active Pending
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