CN114608198B - Efficient pump device for boiler equipment - Google Patents
Efficient pump device for boiler equipment Download PDFInfo
- Publication number
- CN114608198B CN114608198B CN202210185026.2A CN202210185026A CN114608198B CN 114608198 B CN114608198 B CN 114608198B CN 202210185026 A CN202210185026 A CN 202210185026A CN 114608198 B CN114608198 B CN 114608198B
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- CN
- China
- Prior art keywords
- boiler
- pump device
- guide part
- flow guide
- tongue
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
-
- 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
- F04D29/428—Discharge tongues
-
- 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
-
- 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
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
- F24H9/001—Guiding means
- F24H9/0015—Guiding means in water channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a high-efficiency pump device for boiler equipment, which comprises a boiler body (10), a burner (20), a combustion chamber (30), a heat exchanger (40), a pump device and a blower device, wherein the pump device comprises a volute (1), an impeller (2), an outlet pipe (3), a tongue (4) and a fluid director (5), the fluid director is arranged in the volute near the tongue, a first flow channel (6) is formed between the fluid director and the wall of the volute adjacent to the fluid director, and a second flow channel (7) is formed between the fluid director and the periphery of the impeller, and the high-efficiency pump device is characterized in that: the diversion body (5) comprises a diversion part and a rotating body (53), the diversion part is wing-shaped, one end of the diversion part is provided with an arc-shaped groove, the rotating body is arranged in the arc-shaped groove, and the rotating body is rotationally connected with the volute. According to the invention, through the design of the diversion body (diversion part and rotating body), most of vortex generated at the tongue part flows along the second flow passage, so that pressure pulsation at the tongue part is restrained, and the maintenance performance of the pump is improved.
Description
Technical Field
The invention relates to the technical field of industrial boiler equipment and accessories thereof, in particular to a high-efficiency pump device for the boiler equipment.
Background
The boiler is an energy converter, which is a device for heating working medium water or other fluid to a certain parameter by using heat energy released by fuel combustion or other heat energy. As shown in fig. 1, the existing boiler apparatus includes a boiler body 10, a burner 20, a combustion chamber 30, a heat exchanger 40, a pump device, a blower device, an exhaust device, and a valve assembly, wherein the burner 20 is provided at one end of the boiler body 10, the combustion chamber 30 and the heat exchanger 40 are provided in the boiler body 10, the pump device is connected with the boiler body 10 through a pipe, the blower device and the exhaust device are connected with the boiler body 10 through a pipe, the pump device is used for supplying water with stable pressure and flow rate to the boiler body 10, and certain requirements are placed on the performance of the pump device.
As shown in fig. 2, the pump device/circulating water pump in the prior art comprises a volute 1, an impeller 2, an outlet pipe 3, a tongue 4 and a fluid director 5, wherein the impeller 2 is installed in a volute cavity formed by the volute 1, the outlet end of the volute 1 is provided with the outlet pipe 3, one side of the outlet pipe 3 connected with the volute 1 is provided with the tongue 4, the fluid director 5 is arranged in the volute 1 near the tongue 4, the fluid director 5 is positioned between the inner wall of the volute 1 and the periphery of the impeller 2, a first flow channel is formed between the fluid director 5 and the adjacent volute wall, and a second flow channel is formed between the fluid director 5 and the periphery of the impeller 2. However, the existing pump device has the problems of larger vortex generated at the tongue part, larger vortex pulsation and further improvement of the pump performance.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a high-efficiency pump device for boiler equipment, which can enable most of vortex generated at a tongue part to flow along a second flow passage through the design of a flow guide body (a flow guide part and a rotating body), so that vortex pulsation at the tongue part is restrained/reduced, and the dimensional stability of the pump is improved.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a high-efficient pump device for boiler equipment, boiler equipment includes boiler body (10), combustor (20), combustion chamber (30), heat exchanger (40), pump device, blast apparatus, exhaust apparatus, valve assembly, the one end of boiler body is provided with the combustor, this internal combustion chamber of being provided with of boiler, heat exchanger, pump device is connected with the boiler body through the pipeline, blast apparatus, exhaust apparatus is connected with the boiler body through the pipeline, pump device includes spiral case (1), impeller (2), outlet pipe (3), tongue (4), water conservancy diversion body (5), the impeller is installed in the spiral case intracavity that the spiral case constitutes, the exit end of spiral case is provided with the outlet pipe, the side that the outlet pipe is connected with the spiral case is provided with the tongue, be close to tongue department in the spiral case and be provided with the water conservancy diversion body, the water conservancy diversion body is located between spiral case inner wall and the impeller periphery, form first fluid channel (6) between water conservancy diversion body and the spiral case wall adjacent thereto, form second fluid channel (7) between water conservancy diversion body and the impeller periphery, the centre of a circle of impeller (2) is O, establish X-Y axis coordinate system through centre of a circle O, Y axis and outlet pipe (3) center of a circle parallel, its characterized in that: the diversion body (5) comprises a diversion part and a rotating body (53), the diversion part is wing-shaped, one end of the diversion part is provided with an arc-shaped groove, the rotating body is arranged in the arc-shaped groove, and the rotating body is rotationally connected with the volute.
Further, the guide part is an arc guide part, the guide part comprises a first guide part (51) and a second guide part (52), the first guide part and the second guide part are sequentially connected, the first guide part is provided with the arc groove, the first guide part (51) is arranged in a uniform thickness mode, and the second guide part (52) is arranged in a tapered mode.
Further, the rotation direction of the impeller (2) is anticlockwise, the rotation direction of the rotating body (53) is clockwise, and the radial gap width of the first flow passage (6) is smaller than the radial gap width of the corresponding second flow passage (7).
Further, different pressure differences are generated in the first flow channel (6) and the second flow channel (7), so that the rotating body (53) rotates clockwise; the pressure in the first flow passage is greater than the pressure in the second flow passage.
Further, the connecting line of the midpoint of the tongue (4) and the circle center O is taken as an initial line, the circle center angle a occupied by the flow guide body (5) along the circumferential direction is 30-70 degrees, and the circle center angle a is arranged approximately symmetrically about the Y axis.
Further, the rotating body (53) comprises a rotating shaft (54) and fins (55), the periphery of the rotating shaft is provided with a plurality of fins which are uniformly distributed, and the fins are obliquely arranged relative to the axis of the rotating shaft; the rotating body (53) is rotatably connected with the volute (1) through a bearing.
According to the high-efficiency pump device for the boiler equipment, through the design of the diversion body (the diversion part and the rotator), most of vortex generated at the tongue part can flow along the second flow passage, so that vortex pulsation at the tongue part is restrained, and the stability performance of the pump is improved.
Drawings
FIG. 1 is a schematic view of a prior art boiler plant;
FIG. 2 is a schematic diagram of a prior art pump device;
FIG. 3 is a schematic view of the construction of the high efficiency pump apparatus for boiler plant of the present invention;
FIG. 4 is a schematic view of the construction of the high efficiency pump apparatus for boiler plant of the present invention;
fig. 5 is a schematic view showing a structure of a rotary body of the high efficiency pump device for boiler plant according to the present invention.
In the figure: the boiler comprises a boiler body 10, a burner 20, a combustion chamber 30, a heat exchanger 40, a volute 1, an impeller 2, an outlet pipe 3, a tongue 4, a guide body 5, a first guide part 51, a second guide part 52, a rotating body 53, a rotating shaft 54, a vane 55, a first flow channel 6 and a second flow channel 7.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1-5, a high-efficiency pump device for a boiler device, the boiler device comprises a boiler body 10, a burner 20, a combustion chamber 30, a heat exchanger 40, a pump device, an air blast device, an exhaust device and a valve assembly, wherein the burner 20 is arranged at one end of the boiler body 10, the combustion chamber 30 and the heat exchanger 40 are arranged in the boiler body 10, the pump device is connected with the boiler body 10 through a pipeline, the air blast device and the exhaust device are connected with the boiler body 10 through the pipeline, the pump device comprises a volute 1, an impeller 2, an outlet pipe 3, a tongue 4 and a flow guide body 5, the impeller 2 is arranged in a volute cavity formed by the volute 1, the outlet end of the volute 1 is provided with the outlet pipe 3, the tongue 4 is arranged at one side of the volute 1, which is connected with the outlet pipe 3, a flow guide body 5 is arranged in the volute 1, a first flow channel 6 is formed between the inner wall of the volute 1 and the periphery of the impeller 2, a second flow channel 7 is formed between the flow guide body 5 and the periphery of the impeller 2, the center of the impeller 2 is O, an X-Y axis is established through a center O-Y axis, and the center line is parallel to the center line of the outlet pipe is characterized in that: the diversion body 5 comprises a diversion part and a rotating body 53, the diversion part is in a wing shape, one end of the diversion part is provided with an arc-shaped groove, the rotating body 53 is arranged in the arc-shaped groove, and the rotating body 53 is rotationally connected with the volute 1.
Further, the flow guiding part is an arc-shaped flow guiding part, the flow guiding part comprises a first flow guiding part 51 and a second flow guiding part 52, the first flow guiding part 51 and the second flow guiding part 52 are sequentially connected, the first flow guiding part 51 is provided with the arc-shaped groove, the first flow guiding part 51 is arranged in a uniform thickness mode, and the second flow guiding part 52 is arranged in a tapered mode.
The invention relates to a high-efficiency pump device for boiler equipment, which can lead most of vortex generated at a tongue 4 to flow along a second flow channel 7 by the design of a diversion body 5 (diversion part and a rotating body 53), thereby inhibiting/reducing vortex pulsation at the tongue 4 and improving the stability performance of the pump.
Further, the rotation direction of the impeller 2 is counterclockwise, the rotation direction of the rotating body 53 is clockwise, and the radial gap width of the first flow passage 6 is smaller than the radial gap width of the corresponding second flow passage 7, so that different pressure differences are generated in the first flow passage 6 and the second flow passage 7, thereby rotating the rotating body 53 clockwise. Specifically, the pressure in the first flow passage 6 is greater than the pressure in the second flow passage 7.
Taking the connecting line of the midpoint of the tongue 4 and the circle center O as an initial line, the circle center angle/sector angle a occupied by the flow guide body 5 along the circumferential direction is 35-65 degrees, preferably 50 degrees; the central angle/fan angle a is arranged substantially symmetrically about the Y-axis.
Further, the rotating body 53 comprises a rotating shaft 54 and fins 55, the periphery of the rotating shaft 54 is provided with a plurality of fins 55 which are uniformly distributed, and the fins 55 are obliquely arranged relative to the axis of the rotating shaft 54; the rotating body 53 is rotatably connected with the volute 1 through a bearing, and the rotating body 53 is driven to passively rotate under the driving of pressure differences of different pressures.
The high-efficiency pump device for the boiler equipment can further enable most of vortex generated at the tongue 4 to flow along the second flow passage 7 by the design of the rotating body 53, so that vortex pulsation at the tongue 4 is restrained, and the stability performance of the pump device is improved.
According to the high-efficiency pump device for the boiler equipment, through the design of the diversion body (the diversion part and the rotator), most of vortex generated at the tongue part can flow along the second flow passage, so that vortex pulsation at the tongue part is restrained/reduced, and the maintenance performance of the pump device is improved.
The above-described embodiments are illustrative of the present invention and are not intended to be limiting, and it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents.
Claims (4)
1. The utility model provides a high-efficient pump device for boiler equipment, boiler equipment includes boiler body (10), combustor (20), combustion chamber (30), heat exchanger (40), pump device, blast apparatus, exhaust apparatus, valve assembly, the one end of boiler body is provided with the combustor, be provided with combustion chamber in the boiler body, the heat exchanger, pump device is connected with the boiler body through the pipeline, blast apparatus, exhaust apparatus is connected with the boiler body through the pipeline, pump device includes spiral case (1), impeller (2), outlet pipe (3), tongue (4), water conservancy diversion body (5), the impeller is installed in the spiral case intracavity that the spiral case constitutes, the exit end of spiral case is provided with the outlet pipe, the side that the outlet pipe is connected with the spiral case is provided with the tongue, be provided with the water conservancy diversion body in the spiral case near the tongue, water conservancy diversion body is located between spiral case inner wall and the impeller periphery, form first fluid channel (6) between water conservancy diversion body and the spiral case wall adjacent thereto, form second fluid channel (7) between water conservancy diversion body and the impeller periphery, the centre of a circle of circle O of impeller (2) is the O, X-Y axis coordinate system is established to the centre of a circle O, Y axis is parallel with the central line of outlet pipe (3);
the method is characterized in that: the diversion body (5) comprises a diversion part and a rotating body (53), the diversion part is in a wing shape, one end of the diversion part is provided with an arc-shaped groove, the rotating body is arranged in the arc-shaped groove, and the rotating body is rotationally connected with the volute; the flow guide part is an arc-shaped flow guide part, the flow guide part comprises a first flow guide part (51) and a second flow guide part (52), the first flow guide part and the second flow guide part are sequentially connected, the first flow guide part is provided with the arc-shaped groove, the first flow guide part (51) is arranged in an equal thickness manner, and the second flow guide part (52) is arranged in a tapered manner; the rotation direction of the impeller (2) is anticlockwise, the rotation direction of the rotating body (53) is clockwise, and the radial gap width of the first flow passage (6) is smaller than that of the corresponding second flow passage (7).
2. A high efficiency pump device for a boiler plant according to claim 1, characterized in that different pressure differences are generated in the first flow channel (6), the second flow channel (7), whereby the rotation body (53) is rotated clockwise; the pressure in the first flow passage is greater than the pressure in the second flow passage.
3. A high-efficiency pump device for boiler equipment according to claim 2, characterized in that the central angle a of the flow guide body (5) along the circumferential direction is 30-70 ° with the line connecting the midpoint of the tongue (4) with the center O as the starting line, and the central angle a is symmetrically arranged about the Y axis.
4. A high efficiency pump apparatus for a boiler plant according to claim 3, wherein the rotating body (53) comprises a rotating shaft (54), fins (55), the outer periphery of the rotating shaft being provided with a plurality of evenly distributed fins, the fins being arranged obliquely with respect to the axis of the rotating shaft; the rotating body (53) is rotatably connected with the volute (1) through a bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210185026.2A CN114608198B (en) | 2022-02-28 | 2022-02-28 | Efficient pump device for boiler equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210185026.2A CN114608198B (en) | 2022-02-28 | 2022-02-28 | Efficient pump device for boiler equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114608198A CN114608198A (en) | 2022-06-10 |
| CN114608198B true CN114608198B (en) | 2023-09-01 |
Family
ID=81858159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210185026.2A Active CN114608198B (en) | 2022-02-28 | 2022-02-28 | Efficient pump device for boiler equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114608198B (en) |
Citations (19)
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|---|---|---|---|---|
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| DE733286C (en) * | 1935-09-14 | 1943-03-24 | Schuechtermann & Kremer Baum A | Pit fan |
| US5419680A (en) * | 1992-11-25 | 1995-05-30 | Nippondenso Co., Ltd. | Multi-blade blower |
| US5772399A (en) * | 1993-12-21 | 1998-06-30 | American Standard Inc. | Apparatus and method for efficiency and output capacity matching in a centrifugal fan |
| CN101668954A (en) * | 2007-05-11 | 2010-03-10 | 三菱重工业株式会社 | Centrifugal blower |
| EP2275687A2 (en) * | 2009-07-17 | 2011-01-19 | Behr GmbH & Co. KG | Radial ventilator housing |
| CN103306985A (en) * | 2013-06-20 | 2013-09-18 | 江苏大学 | Low-noise hydraulic design method of centrifugal pump with low specific speed |
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| CN205423324U (en) * | 2015-08-28 | 2016-08-03 | 依必安-派特穆尔芬根股份有限两合公司 | Propeller cap of radial fan |
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| CN110088482A (en) * | 2016-12-20 | 2019-08-02 | 三菱电机株式会社 | Multiple-wing fan |
| CN110439862A (en) * | 2018-05-04 | 2019-11-12 | 宁波方太厨具有限公司 | A kind of volute structure of centrifugal blower |
| CN211623768U (en) * | 2019-12-02 | 2020-10-02 | 浙江金盾风机股份有限公司 | High-efficient centrifugal induced fan of big air current |
| CN111878459A (en) * | 2020-07-27 | 2020-11-03 | 珠海格力电器股份有限公司 | Volute, centrifugal fan and household appliance |
| CN211975415U (en) * | 2020-03-04 | 2020-11-20 | 武汉泰康翔科技股份有限公司 | High-efficient centrifugal water pump |
| CN112360805A (en) * | 2020-10-26 | 2021-02-12 | 江苏大学 | Novel asymmetric low-noise centrifugal pump |
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2022
- 2022-02-28 CN CN202210185026.2A patent/CN114608198B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE520958C (en) * | 1928-02-08 | 1931-03-16 | Westfalia Dinnendahl A G | Blower with a simple spiral housing, which can be lengthened or shortened by moving the tip of the tongue |
| DE733286C (en) * | 1935-09-14 | 1943-03-24 | Schuechtermann & Kremer Baum A | Pit fan |
| US5419680A (en) * | 1992-11-25 | 1995-05-30 | Nippondenso Co., Ltd. | Multi-blade blower |
| US5772399A (en) * | 1993-12-21 | 1998-06-30 | American Standard Inc. | Apparatus and method for efficiency and output capacity matching in a centrifugal fan |
| CN101668954A (en) * | 2007-05-11 | 2010-03-10 | 三菱重工业株式会社 | Centrifugal blower |
| EP2275687A2 (en) * | 2009-07-17 | 2011-01-19 | Behr GmbH & Co. KG | Radial ventilator housing |
| CN103306985A (en) * | 2013-06-20 | 2013-09-18 | 江苏大学 | Low-noise hydraulic design method of centrifugal pump with low specific speed |
| CN205423324U (en) * | 2015-08-28 | 2016-08-03 | 依必安-派特穆尔芬根股份有限两合公司 | Propeller cap of radial fan |
| CN105673557A (en) * | 2016-04-08 | 2016-06-15 | 石家庄嘉祥精密机械有限公司 | Centrifugal fan device of large-discharge-capacity oilless air compressor of rail transit and mounting method thereof |
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| CN110088482A (en) * | 2016-12-20 | 2019-08-02 | 三菱电机株式会社 | Multiple-wing fan |
| CN206320047U (en) * | 2016-12-23 | 2017-07-11 | 克奥兹泵业（深圳）有限公司 | High-efficiency centrifugal pump |
| CN108240354A (en) * | 2017-12-27 | 2018-07-03 | 宁波方太厨具有限公司 | A kind of volute tongue and the centrifugal blower for being equipped with the volute tongue |
| CN110439862A (en) * | 2018-05-04 | 2019-11-12 | 宁波方太厨具有限公司 | A kind of volute structure of centrifugal blower |
| CN211623768U (en) * | 2019-12-02 | 2020-10-02 | 浙江金盾风机股份有限公司 | High-efficient centrifugal induced fan of big air current |
| CN211975415U (en) * | 2020-03-04 | 2020-11-20 | 武汉泰康翔科技股份有限公司 | High-efficient centrifugal water pump |
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| CN112360805A (en) * | 2020-10-26 | 2021-02-12 | 江苏大学 | Novel asymmetric low-noise centrifugal pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114608198A (en) | 2022-06-10 |
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