CN111365250A - Permanent magnet variable frequency water pump with anti-blocking function - Google Patents
Permanent magnet variable frequency water pump with anti-blocking function Download PDFInfo
- Publication number
- CN111365250A CN111365250A CN202010319393.8A CN202010319393A CN111365250A CN 111365250 A CN111365250 A CN 111365250A CN 202010319393 A CN202010319393 A CN 202010319393A CN 111365250 A CN111365250 A CN 111365250A
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- variable frequency
- wall
- water
- permanent magnet
- pipe
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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
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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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
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
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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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5813—Cooling the control unit
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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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially 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
- F04D3/00—Axial-flow pumps
- F04D3/02—Axial-flow pumps of screw type
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electromagnetic Pumps, Or The Like (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a permanent magnet variable frequency water pump with an anti-clogging function, relates to the field of variable frequency water pumps, and provides the following scheme aiming at the problem that the later use is influenced by the easy clogging in the currently used permanent magnet variable frequency water pump, which comprises a bearing plate, wherein two water through pipes are fixedly arranged at the center position of the upper surface of the bearing plate, one side of the upper surface of each water through pipe is provided with a variable frequency motor, the output end of the variable frequency motor is fixedly provided with a permanent magnet variable frequency element which is fixedly connected with the two water pipes, the two water pipes are respectively and fixedly provided with a water outlet pipe and a transit water pipe, the outer wall of one side of the transit water pipe is provided with an installation plate, the mounting panel is close to one side outer wall central point of transfer water pipe and puts the rotation and install central main shaft, the outer wall of central main shaft fixed mounting respectively has and cuts the rubbing strip with helical blade and the inner wall of transfer water pipe inner wall matching. The invention has novel structure, simple operation, obvious adaptation effect and high practicability.
Description
Technical Field
The invention relates to the field of variable frequency water pumps, in particular to a permanent magnet variable frequency water pump with an anti-blocking function.
Background
The permanent magnet frequency conversion technology is a high-efficiency technology which is widely used at present, and in terms of the present, a permanent magnet frequency conversion motor comprises a permanent magnet rotor, and because the rotating speed of the motor can be changed under the condition of not changing input power, or the input power and the output power can be changed under the condition of not changing the rotating speed of the motor, in the process of energy conversion, the energy consumed in energy conversion can be greatly reduced, so that a large amount of resources can be saved, the permanent magnet frequency conversion technology has the advantages of energy conservation and environmental protection, and can be widely used in various industries.
Especially, to a permanent magnetism frequency conversion water pump, frequency conversion water pump wide use is in hydraulic engineering, for example in the processing procedure of sewage, perhaps among the cooling operation of drawing water on the industrial production, but permanent magnetism frequency conversion water pump belongs to precision equipment mostly, and the liquid of drawing can dope too much impurity, leads to the water pump to block up, influences the later stage and uses, consequently, for solving this type of problem, we propose the permanent magnetism frequency conversion water pump that has anti-clogging function.
Disclosure of Invention
The invention provides a permanent magnet variable frequency water pump with an anti-blocking function, which solves the problem that the later use is influenced by blocking easily existing in the current permanent magnet variable frequency water pump.
In order to achieve the purpose, the invention adopts the following technical scheme:
the permanent magnet variable frequency water pump with the anti-blocking function comprises a bearing plate, wherein two water through pipes are fixedly arranged at the center position of the upper surface of the bearing plate, a variable frequency motor is arranged on one side of the upper surface of each water through pipe, a permanent magnet variable frequency element is fixedly arranged at the output end of the variable frequency motor and is fixedly connected with the two water through pipes, a water outlet pipe and a transit water pipe are respectively and fixedly arranged on the two water through pipes, a mounting plate is arranged on the outer wall of one side of the transit water pipe, a central main shaft is rotatably arranged at the center position of the outer wall of one side, close to the transit water pipe, of the mounting plate, the outer wall of the central main shaft is respectively and fixedly provided with a helical blade matched with the inner wall of the transit water pipe and an inner wall rubbing strip, a water inlet pipe is fixedly arranged on the transit water pipe, and, the inner wall of the water inlet pipe is provided with a butterfly sheet along the vertical direction, the butterfly sheet is fixedly provided with a connecting rod along the vertical direction, the butterfly sheet is positioned right below the connecting air box, the connecting rod sequentially penetrates through the water inlet pipe and the outer wall of one side of the connecting air box, and the top end of the connecting rod is fixedly provided with an installation base station, the outer wall of the installation base station is uniformly and fixedly provided with rotating blades matched with the inner wall of the connecting bellows, an air inlet pipe is fixedly arranged at the center of the upper surface of the connecting air box, a filter chamber is fixedly arranged at the other end of the water inlet pipe, the two sides of the inner wall of the filtering chamber are symmetrically distributed and fixedly provided with mounting groove plates, a filtering plate is arranged at the middle position of the two mounting groove plates, the upper surface fixed mounting of filter has the closing plate, the lower fixed surface of closing plate installs the sealing strip, set up the seal groove that matches with the sealing strip on the filter chamber.
Preferably, one side fixed mounting that the upper surface of bearing board is close to inverter motor has the inverter cabinet, the inside PLC control circuit board that is provided with of inverter cabinet, PLC control circuit board and inverter motor are electric connection.
Preferably, the mounting plates are fixedly mounted on one sides of the outer walls of the water outlet pipe, the water inlet pipe and the transfer water pipe, and the single-phase stop valve is fixedly mounted on the water outlet pipe.
Preferably, the inner wall is cut and is scraped the strip and is evenly distributed, and the inner wall is cut and is scraped the strip and is located helical blade intermediate position, helical blade's pitch reduces along the horizontal direction that is close to inverter motor gradually.
Preferably, the center main shaft runs through the outer wall one side of mounting panel, and the terminal fixed mounting of center main shaft has the pointer, the outer wall central point fixed mounting of mounting panel has the interception grid, and the pointer is located the inside of interception grid.
Preferably, the upper surface of the two water pipes is fixedly provided with a heat dissipation box, the heat dissipation box is located on the outer wall of the permanent magnet frequency conversion element and communicated with the air inlet pipe, and a heat dissipation groove is formed in one side, close to the frequency conversion cabinet, of the heat dissipation box.
Preferably, a sealing washer is fixedly arranged at the joint of the mounting plate and the transit water pipe.
The invention has the beneficial effects that:
1. in the device, the spiral blade is arranged, in the process of putting the variable frequency water pump into use, water flow flows in the transfer water pipe along with the water flow entering the transfer water pipe, the spiral blade is spiral, and the pitch of the spiral blade is gradually reduced, so that the whole central main shaft rotates, the inner wall scraping and rubbing strip on the central main shaft is used for slowly scraping and rubbing the inner wall of the transfer water pipe, so that adhered impurities in the transfer water pipe can be scraped and rubbed, and the blockage caused by accumulated impurities in the transfer water pipe due to electrolyte in the water flow in long-term use is avoided.
2. In the device, be provided with the filter chamber, filter chamber inside mainly comprises filter and installation frid, at the in-process of rivers process filter chamber, can be earlier through the filtering process of filter, is stained with partly impurity and attaches on the filter, accumulates more impurity back simultaneously on the filter, can quick replacement and washing filter, facilitate the use.
3. In the device, be provided with the butterfly piece, installation base station and rotating vane, at the in-process of rivers through the inlet tube, the flow of rivers can drive the butterfly piece and rotate, thereby it rotates to drive the rotating vane on the installation base station through the connecting rod, produce wind-force, blow wind-force to the heat dissipation box in through the intake pipe, the permanent magnetism frequency conversion component to permanent magnetism frequency conversion motor inside receives the influence of temperature easily, so can be along with the flow of rivers self, blow out the high temperature gas that produces in the device operation process, so can realize the effect to the permanent magnetism frequency conversion motor cooling, energy saving, environmental protection is high-efficient.
In conclusion, the device can play the effect of preventing the inside jam of device, can play the effect of cooling simultaneously to the service life of extension device, easy operation, the practicality is high.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a half-sectional view of the heat-dissipating cassette part of the present invention.
Fig. 3 is a schematic structural view of the water inlet pipe and the water outlet pipe parts of the present invention.
Fig. 4 is a schematic structural diagram of a in the present invention.
Fig. 5 is a schematic structural view of the helical blade member of the present invention.
FIG. 6 is a schematic diagram of the filter chamber component of the present invention.
Reference numbers in the figures: the device comprises an interception grating 1, a transfer water pipe 2, a connecting air box 3, an air inlet pipe 4, a variable frequency motor 5, a heat dissipation box 6, a variable frequency cabinet 7, a water outlet pipe 8, a single-phase stop valve 9, a supporting plate 10, a filtering chamber 11, a water inlet pipe 12, a permanent magnet variable frequency element 13, a two-way water pipe 14, a butterfly sheet 15, a rotating blade 16, a mounting base table 17, a pointer 18, a mounting plate 19, a central main shaft 20, a scraping strip for the inner wall 21, a spiral blade 22, a mounting groove plate 23, a sealing groove 24, a sealing strip 25, a sealing plate 26, a filtering plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-6, a permanent magnet variable frequency water pump with anti-blocking function comprises a support plate 10, wherein two water pipes 14 are fixedly installed at the center position of the upper surface of the support plate 10, a variable frequency motor 5 is arranged on one side of the upper surface of the two water pipes 14, a permanent magnet variable frequency element 13 is fixedly installed at the output end of the variable frequency motor 5, the permanent magnet variable frequency element 13 is fixedly connected with the two water pipes 14, a water outlet pipe 8 and a transit water pipe 2 are respectively and fixedly installed on the two water pipes 14, a mounting plate 19 is arranged on the outer wall of one side of the transit water pipe 2, a central main shaft 20 is rotatably installed at the center position of the outer wall of one side of the mounting plate 19 close to the transit water pipe 2, a helical blade 22 and an inner wall rubbing strip 21 which are matched with the inner wall of the transit water pipe 2 are respectively and fixedly installed, the water inlet pipe 12 is fixedly provided with a connecting bellows 3 along the vertical direction near one end of the transfer water pipe 2, the inner wall of the water inlet pipe 12 is provided with a butterfly sheet 15 along the vertical direction, the butterfly sheet 15 is fixedly provided with a connecting rod 28 along the vertical direction, the butterfly sheet 15 is positioned under the connecting bellows 3, the connecting rod 28 sequentially penetrates through the water inlet pipe 12 and one side outer wall of the connecting bellows 3, the top end of the connecting rod 28 is fixedly provided with an installation base table 17, the outer wall of the installation base table 17 is uniformly distributed and fixedly provided with rotating blades 16 matched with the inner wall of the connecting bellows 3, the central position of the upper surface of the connecting bellows 3 is fixedly provided with an air inlet pipe 4, the other end of the water inlet pipe 12 is fixedly provided with a filter chamber 11, the two sides of the inner wall of the filter chamber 11 are symmetrically distributed and fixedly provided with installation slot plates, the upper surface of the filter plate 27 is fixedly provided with a sealing plate 26, the lower surface of the sealing plate 26 is fixedly provided with a sealing strip 25, the filter chamber 11 is provided with a sealing groove 24 matched with the sealing strip 25, one side of the upper surface of the support plate 10 close to the variable frequency motor 5 is fixedly provided with a variable frequency cabinet 7, the variable frequency cabinet 7 is internally provided with a PLC control circuit board, the PLC control circuit board is electrically connected with the variable frequency motor 5, the outer wall sides of the water outlet pipe 8, the water inlet pipe 12 and the transit water pipe 2 are fixedly provided with mounting plates, the water outlet pipe 8 is fixedly provided with a single-phase stop valve 9, the inner wall scraping strips 21 are uniformly distributed, the inner wall scraping strips 21 are positioned in the middle of the helical blade 22, the pitch of the helical blade 22 is gradually reduced along the horizontal direction close to the variable frequency motor 5, and the central, and the terminal fixed mounting of central main shaft 20 has pointer 18, the outer wall central point of mounting panel 19 puts fixed mounting and has interception grid 1, and pointer 18 is located the inside of interception grid 1, and the last fixed surface who states two water pipes 14 installs heat dissipation box 6, heat dissipation box 6 is located permanent magnetism frequency conversion element 13's outer wall, and heat dissipation box 6 and intake pipe 4 intercommunication, the radiating groove has been seted up to one side that heat dissipation box 6 is close to inverter cabinet 7, mounting panel 19 and the junction fixed mounting of well water pipe 2 have seal ring.
Example (b): in the using process of the device, the water outlet end and the water inlet end are connected through the water outlet pipe 8 and the water inlet pipe 12 respectively, the rotating speed of the variable frequency motor 5 can be changed under the condition of not changing the output power of the variable frequency motor 5 by operating the variable frequency cabinet 7, so that the water flow speed is changed, otherwise, the output power of the variable frequency motor 5 is changed under the condition of not changing the rotating speed of the variable frequency motor 5, and the loss in the energy conversion process is reduced.
In the use, rivers are at first through inlet tube 12 entering filter chamber 11, and rivers fully contact with filter 27, can adsorb the inside impurity of rivers, and under long-term the use, be stained with the more back of attached impurity on the filter 27, can open closing plate 26, take out filter 27 and wash or change, after reinstallating, sealing strip 25 on the closing plate 26 matches each other with seal groove 24 on the filter chamber 11, plays sealed effect.
Then, in the process that water flow continues to enter the transit water pipe 2 through the water inlet pipe 12, the water flow drives the butterfly piece 15 to rotate, so that the connecting rod 28 drives the rotating blade 16 on the mounting base 17 to rotate, wind power is generated and is blown into the heat dissipation box 6 through the air inlet pipe 4, and the high temperature generated by the permanent magnet frequency conversion element 13 during operation can be discharged along with the wind power generated by the rotating blade 16, so that the effect of cooling is achieved.
Meanwhile, in the case that the water flow enters the transit water pipe 2, the water flow drives the spiral blade 22 to rotate due to the shape of the spiral blade 22, so that the central main shaft 20 can be driven to rotate, the central main shaft 20 is provided with a plurality of inner wall scraping strips 21 which can be scraped with the inner wall of the transit water pipe 2, electrolyte in the water flow can be prevented from thickening the inner wall of the transit water pipe 2 under long-term use and affecting later use, and the pointer 18 is arranged at the other end of the central main shaft 20, so that the approximate flow velocity of the water flow can be known through observation.
In the process of water flow speed change, the water flow is gradually discharged along with the water outlet pipe 8, and meanwhile, the single-phase stop valve 9 on the water outlet pipe 8 can effectively stop water flow.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The permanent magnet variable frequency water pump with the anti-blocking function comprises a bearing plate (10) and is characterized in that a two-way water pipe (14) is fixedly installed at the center of the upper surface of the bearing plate (10), a variable frequency motor (5) is arranged on one side of the upper surface of the two-way water pipe (14), a permanent magnet variable frequency element (13) is fixedly installed at the output end of the variable frequency motor (5), the permanent magnet variable frequency element (13) is fixedly connected with the two-way water pipe (14), a water outlet pipe (8) and a transit water pipe (2) are respectively and fixedly installed on the two-way water pipe (14), an installation plate (19) is arranged on the outer wall of one side of the transit water pipe (2), a central main shaft (20) is rotatably installed at the center of the outer wall of one side, close to the transit water pipe (2), a spiral blade (22) matched with the inner wall of the transit water pipe (2) and an inner wall rubbing strip (21) are respectively and fixedly, fixed mounting has inlet tube (12) on transfer water pipe (2), the one end that inlet tube (12) are close to transfer water pipe (2) has connection bellows (3) along vertical direction fixed mounting, the inner wall of inlet tube (12) is provided with butterfly piece (15) along vertical direction, there is connecting rod (28) along vertical direction fixed mounting on butterfly piece (15), butterfly piece (15) are located and connect bellows (3) under, connecting rod (28) run through one side outer wall of inlet tube (12) and connection bellows (3) in proper order, and the top fixed mounting of connecting rod (28) has installation base station (17), the outer wall of installation base station (17) is evenly distributed fixed mounting and has rotating vane (16) with being connected bellows (3) inner wall matching, the upper surface central point fixed mounting who connects bellows (3) has intake pipe (4), the other end fixed mounting of inlet tube (12) has filter chamber (11), the inner wall both sides of filter chamber (11) are symmetric distribution fixed mounting and have installation frid (23), two the intermediate position of installation frid (23) is provided with filter (27), the last fixed surface of filter (27) installs closing plate (26), the lower fixed surface of closing plate (26) installs sealing strip (25), set up seal groove (24) that match with sealing strip (25) on filter chamber (11).
2. The permanent magnet variable frequency water pump with the anti-clogging function according to claim 1, wherein a variable frequency cabinet (7) is fixedly mounted on one side of the upper surface of the supporting plate (10) close to the variable frequency motor (5), a PLC control circuit board is arranged inside the variable frequency cabinet (7), and the PLC control circuit board is electrically connected with the variable frequency motor (5).
3. The permanent magnet variable frequency water pump with the anti-clogging function according to claim 1, wherein mounting plates are fixedly mounted on one sides of the outer walls of the water outlet pipe (8), the water inlet pipe (12) and the transit water pipe (2), and a single-phase stop valve (9) is fixedly mounted on the water outlet pipe (8).
4. The permanent magnet variable frequency water pump with the anti-clogging function according to claim 1, wherein the inner wall scraping strips (21) are uniformly distributed, the inner wall scraping strips (21) are located in the middle of the helical blades (22), and the pitch of the helical blades (22) is gradually reduced along the horizontal direction close to the variable frequency motor (5).
5. The permanent magnet variable frequency water pump with the anti-clogging function according to claim 1, wherein the central main shaft (20) penetrates through one side of the outer wall of the mounting plate (19), a pointer (18) is fixedly mounted at the tail end of the central main shaft (20), the intercepting grid (1) is fixedly mounted at the center position of the outer wall of the mounting plate (19), and the pointer (18) is located inside the intercepting grid (1).
6. The permanent magnet variable frequency water pump with the anti-clogging function according to claim 1, wherein a heat dissipation box (6) is fixedly installed on the upper surfaces of the two water pipes (14), the heat dissipation box (6) is located on the outer wall of the permanent magnet variable frequency element (13), the heat dissipation box (6) is communicated with the air inlet pipe (4), and a heat dissipation groove is formed in one side, close to the variable frequency cabinet (7), of the heat dissipation box (6).
7. The permanent magnet variable frequency water pump with the anti-clogging function according to claim 1, wherein a sealing gasket is fixedly installed at the joint of the mounting plate (19) and the transit water pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010319393.8A CN111365250B (en) | 2020-04-21 | 2020-04-21 | Permanent magnet variable frequency water pump with anti-blocking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010319393.8A CN111365250B (en) | 2020-04-21 | 2020-04-21 | Permanent magnet variable frequency water pump with anti-blocking function |
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| Publication Number | Publication Date |
|---|---|
| CN111365250A true CN111365250A (en) | 2020-07-03 |
| CN111365250B CN111365250B (en) | 2021-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010319393.8A Active CN111365250B (en) | 2020-04-21 | 2020-04-21 | Permanent magnet variable frequency water pump with anti-blocking function |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3680975A (en) * | 1970-01-14 | 1972-08-01 | Dow Chemical Co | Roll pump for highly viscous material |
| JPS52142314A (en) * | 1976-05-21 | 1977-11-28 | Ebara Corp | Process for making casing of screw pump |
| GB2192667A (en) * | 1986-06-20 | 1988-01-20 | Hayashi Seiko Kk | A screw pump |
| CN2355770Y (en) * | 1998-11-27 | 1999-12-29 | 武汉水利电力大学 | Scrapper type filter |
| CN1255623A (en) * | 1998-11-28 | 2000-06-07 | 杨永林 | Water-cooled fan for cooling tower |
| CN201310472Y (en) * | 2008-12-02 | 2009-09-16 | 孙贵权 | Water flow fan |
| CN103047198A (en) * | 2012-12-30 | 2013-04-17 | 重庆亚源汽车配件有限公司 | Water pump with blowdown discharge outlet |
| CN209131485U (en) * | 2018-10-29 | 2019-07-19 | 重庆千信能源环保有限公司 | A kind of circulating water cooling system |
| CN209672902U (en) * | 2019-03-14 | 2019-11-22 | 安徽新富地能源科技有限公司 | One kind being convenient for clean direct contact heat exchanger |
| CN210265156U (en) * | 2019-06-19 | 2020-04-07 | 山东源源新能源有限公司 | Prevent stifled easy clear mining area underground waste water hoisting device |
-
2020
- 2020-04-21 CN CN202010319393.8A patent/CN111365250B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3680975A (en) * | 1970-01-14 | 1972-08-01 | Dow Chemical Co | Roll pump for highly viscous material |
| JPS52142314A (en) * | 1976-05-21 | 1977-11-28 | Ebara Corp | Process for making casing of screw pump |
| GB2192667A (en) * | 1986-06-20 | 1988-01-20 | Hayashi Seiko Kk | A screw pump |
| CN2355770Y (en) * | 1998-11-27 | 1999-12-29 | 武汉水利电力大学 | Scrapper type filter |
| CN1255623A (en) * | 1998-11-28 | 2000-06-07 | 杨永林 | Water-cooled fan for cooling tower |
| CN201310472Y (en) * | 2008-12-02 | 2009-09-16 | 孙贵权 | Water flow fan |
| CN103047198A (en) * | 2012-12-30 | 2013-04-17 | 重庆亚源汽车配件有限公司 | Water pump with blowdown discharge outlet |
| CN209131485U (en) * | 2018-10-29 | 2019-07-19 | 重庆千信能源环保有限公司 | A kind of circulating water cooling system |
| CN209672902U (en) * | 2019-03-14 | 2019-11-22 | 安徽新富地能源科技有限公司 | One kind being convenient for clean direct contact heat exchanger |
| CN210265156U (en) * | 2019-06-19 | 2020-04-07 | 山东源源新能源有限公司 | Prevent stifled easy clear mining area underground waste water hoisting device |
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| CN111365250B (en) | 2021-03-05 |
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