CN112377419A - Spiral centrifugal pump with combined runner - Google Patents
Spiral centrifugal pump with combined runner Download PDFInfo
- Publication number
- CN112377419A CN112377419A CN202011269179.2A CN202011269179A CN112377419A CN 112377419 A CN112377419 A CN 112377419A CN 202011269179 A CN202011269179 A CN 202011269179A CN 112377419 A CN112377419 A CN 112377419A
- Authority
- CN
- China
- Prior art keywords
- cover plate
- centrifugal
- guide plate
- impeller
- spiral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/04—Helico-centrifugal pumps
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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
- F04D29/2238—Special flow patterns
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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
- F04D29/242—Geometry, shape
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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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
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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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
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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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a spiral centrifugal pump with a combined flow passage, which belongs to the field of spiral centrifugal pumps and comprises an impeller, wherein the impeller consists of a spiral centrifugal blade and a cover plate flow passage, a rear cover plate is arranged outside the cover plate flow passage, an annular front cover plate is arranged in front of the rear cover plate, an arc-shaped guide plate is arranged between the rear cover plate and the front cover plate, two sides of the front end of the guide plate are attached to a centrifugal section of the spiral centrifugal blade, and after the front cover plate and the rear cover plate are added to the centrifugal section of the impeller, the centrifugal section forms a semi-open impeller flow passage, so that the passing performance of fluid is not influenced, the efficiency is higher than that of the traditional completely open flow passage, in addition, the guide plate arranged between the two cover plates can restrain the fluid in the centrifugal section, the efficiency of the whole machine is improved, the radial force generated when the rotary impeller rotates can be reduced, and the, finally, the effect of reducing noise is achieved.
Description
Technical Field
The invention relates to a screw centrifugal pump, in particular to a screw centrifugal pump with a combined runner.
Background
The spiral centrifugal pump is a novel impurity pump formed by combining a spiral impeller and a centrifugal impeller, the unique structure of the impeller can fully exert the advantages of the spiral centrifugal pump and the centrifugal impeller, the spiral centrifugal pump has the biggest characteristic of no blockage, and when solid and long fiber substances with large volume are conveyed, the solid substances flow along with the flow and do not impact any part in the pump, so the original physical state of the pump can be kept, and the pump can improve the solid passing in solid-liquid two-phase flow with the sacrifice efficiency. However, for the existing screw centrifugal pump, the screw centrifugal pump impeller belongs to an open impeller, so that the conveying efficiency of the pump is greatly reduced, and meanwhile, the screw centrifugal pump impeller is asymmetric, so that a large radial force is generated in a rotating manner, the vibration of the pump body is large, and finally the noise of the pump body is large.
Disclosure of Invention
The technical task of the invention is to provide a spiral centrifugal pump with a composite runner, aiming at the defects of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a screw centrifugal pump of combined type runner, includes the impeller, wherein the impeller comprises spiral centrifugal blade and apron runner be equipped with the back shroud outside the apron runner, be equipped with annular front shroud in the place ahead of back shroud be equipped with curved guide plate between back shroud and the front shroud, the both sides of guide plate front end and the centrifugal section laminating of spiral centrifugal blade.
Further improvement: the front end of the guide plate and the junction of the spiral centrifugal blade and the cover plate flow channel are positioned on the same axis.
Further improvement: the distance between the guide plate and the central axis of the cover plate flow channel is gradually increased from the front end to the rear end of the guide plate.
Further improvement: the thickness of the guide plate is gradually reduced from the front end to the rear end of the guide plate.
Further improvement: the arc length of the guide plate accounts for 90-100 degrees of the central angle of the cover plate flow channel.
Further improvement: and the front end of the front cover plate is provided with an annular hub.
The invention has the advantages that: at the centrifugal section of impeller, increased preceding, two back apron backs, make the centrifugal section form half open impeller runner, do not influence fluidic trafficability characteristic promptly like this, it is efficient still than traditional complete open runner simultaneously, set up the guide plate between two apron in addition, not only can retrain the fluid of centrifugal section, improve the efficiency of complete machine, radial force when simultaneously can also reduce rotatory impeller rotation, and then reduce the vibration of the pump body, finally play the effect of noise reduction.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the impeller of the present invention.
Fig. 3 is a schematic structural view of the connection of the front and rear cover plates of the present invention.
Fig. 4 is a schematic view of the position structure of the deflector of the present invention.
Detailed Description
The invention is described in detail below with reference to the drawings.
As shown in fig. 1 to 4, a centrifugal screw pump with a composite flow channel comprises an impeller, wherein the impeller is composed of a centrifugal screw blade 1 and a cover plate flow channel 2, a rear cover plate 3 is arranged outside the cover plate flow channel 2, an annular front cover plate 4 is arranged in front of the rear cover plate 3, an arc-shaped guide plate 5 is arranged between the rear cover plate 3 and the front cover plate 4, and two sides of the front end of the guide plate 5 are attached to the spiral blade.
Starting from the intersection of the spiral centrifugal blade 1 and the cover plate flow channel 2, along the direction of the spiral centrifugal blade 1, the distance between the spiral centrifugal blade 1 and the cover plate flow channel 2 is gradually reduced, so that the distance between the spiral centrifugal blade 1 and the cover plate flow channel 2 is the largest at the intersection of the spiral centrifugal blade 1 and the cover plate flow channel 2, and the front end of the guide plate 5 and the intersection of the spiral centrifugal blade 1 and the cover plate flow channel 5 are on the same axis, so that the guide plate 5 can play a certain restraint role on the fluid of a centrifugal section; the distance between the guide plate 5 and the central axis of the cover plate flow channel is gradually increased from the front end A to the rear end B of the guide plate 5; the thickness of the guide plate 5 is gradually reduced from the front end to the rear end of the guide plate 5; the arc length of the guide plate 5 accounts for 90-100 degrees of the central angle of the cover plate flow channel; an annular hub 6 is arranged at the front end of the front cover plate 4.
The working principle is as follows: firstly, for the convenience of understanding, the impeller and the front and rear cover plates are separately drawn, in practical application, the rear cover plate 3 and the cover plate flow channel 2 are in an integral structure, the inner diameter of the front cover plate 4 is larger than the outer diameter of the spiral centrifugal blade 1, when the impeller is in operation, fluid enters from the front end of the spiral centrifugal blade 1, and when the fluid reaches the centrifugal section C, the fluid is restrained by the front and rear cover plates and the guide plate 5 together, so that the centrifugal section C becomes a semi-open impeller flow channel, and the operating efficiency of the impeller is improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. The utility model provides a screw centrifugal pump of combined type runner, includes the impeller, its characterized in that: the impeller is composed of spiral centrifugal blades and a cover plate flow passage, a rear cover plate is arranged outside the cover plate flow passage, an annular front cover plate is arranged in front of the rear cover plate, an arc-shaped guide plate is arranged between the rear cover plate and the front cover plate, and two sides of the front end of the guide plate are attached to the centrifugal section of the spiral centrifugal blades.
2. The centrifugal screw pump of claim 1, wherein: the front end of the guide plate and the junction of the spiral centrifugal blade and the cover plate flow channel are positioned on the same axis.
3. The centrifugal screw pump of claim 1, wherein: the distance between the guide plate and the central axis of the cover plate flow channel is gradually increased from the front end to the rear end of the guide plate.
4. The centrifugal screw pump of claim 1, wherein: the thickness of the guide plate is gradually reduced from the front end to the rear end of the guide plate.
5. The centrifugal screw pump according to any one of claims 1 to 4, wherein: the arc length of the guide plate accounts for 90-100 degrees of the central angle of the cover plate flow channel.
6. The centrifugal screw pump of claim 5, wherein: and the front end of the front cover plate is provided with an annular hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011269179.2A CN112377419B (en) | 2020-11-13 | 2020-11-13 | Spiral centrifugal pump with composite runner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011269179.2A CN112377419B (en) | 2020-11-13 | 2020-11-13 | Spiral centrifugal pump with composite runner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112377419A true CN112377419A (en) | 2021-02-19 |
| CN112377419B CN112377419B (en) | 2022-08-30 |
Family
ID=74582257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011269179.2A Active CN112377419B (en) | 2020-11-13 | 2020-11-13 | Spiral centrifugal pump with composite runner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112377419B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5100295A (en) * | 1988-09-16 | 1992-03-31 | Nnc Limited | Impeller pumps |
| CN103362822A (en) * | 2012-04-10 | 2013-10-23 | 株式会社日立工业设备技术 | Spiral pump |
| CN105673554A (en) * | 2016-01-07 | 2016-06-15 | 江苏大学 | Reversed spiral line type guide vane of nuclear main pump and design method of reversed spiral line type guide vane |
| CN207814033U (en) * | 2017-11-28 | 2018-09-04 | 浙江丰球克瑞泵业有限公司 | A kind of impeller of efficient exteenal reflux submersible sewage pump |
| CN209925220U (en) * | 2018-02-28 | 2020-01-10 | 高庆国 | River course desilting is with screw centrifugal pump convenient to remove |
-
2020
- 2020-11-13 CN CN202011269179.2A patent/CN112377419B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5100295A (en) * | 1988-09-16 | 1992-03-31 | Nnc Limited | Impeller pumps |
| CN103362822A (en) * | 2012-04-10 | 2013-10-23 | 株式会社日立工业设备技术 | Spiral pump |
| CN105673554A (en) * | 2016-01-07 | 2016-06-15 | 江苏大学 | Reversed spiral line type guide vane of nuclear main pump and design method of reversed spiral line type guide vane |
| CN207814033U (en) * | 2017-11-28 | 2018-09-04 | 浙江丰球克瑞泵业有限公司 | A kind of impeller of efficient exteenal reflux submersible sewage pump |
| CN209925220U (en) * | 2018-02-28 | 2020-01-10 | 高庆国 | River course desilting is with screw centrifugal pump convenient to remove |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112377419B (en) | 2022-08-30 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Quan Hui Inventor after: Du Yuanying Inventor after: Yang Xueling Inventor after: Sun Chenxi Inventor after: Liu Xiaoyi Inventor after: LAN Jianying Inventor before: Du Yuanying Inventor before: Quan Hui Inventor before: Yang Xueling Inventor before: Lan Jianying Inventor before: Sun Chenxi Inventor before: Liu Xiaoyi |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220810 Address after: 255000 66, No. 528, Nanfeng Road, Jinshan Town, Linzi District, Zibo City, Shandong Province Applicant after: Shandong Changzhi energy equipment Technology Co.,Ltd. Address before: 730050, No. 287 Lan Ping Road, Qilihe District, Gansu, Lanzhou Applicant before: LANZHOU University OF TECHNOLOGY |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |