CN111102203A - Novel smash integration pump station that draws water - Google Patents
Novel smash integration pump station that draws water Download PDFInfo
- Publication number
- CN111102203A CN111102203A CN201911420577.7A CN201911420577A CN111102203A CN 111102203 A CN111102203 A CN 111102203A CN 201911420577 A CN201911420577 A CN 201911420577A CN 111102203 A CN111102203 A CN 111102203A
- Authority
- CN
- China
- Prior art keywords
- water
- fixedly connected
- pump station
- pipe
- novel
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 230000010354 integration Effects 0.000 title claims abstract description 7
- 238000011010 flushing procedure Methods 0.000 claims abstract description 20
- 238000005086 pumping Methods 0.000 claims abstract description 10
- 238000013016 damping Methods 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 abstract description 6
- 238000005406 washing Methods 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 230000003139 buffering effect Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000010791 domestic waste Substances 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004548 suspo-emulsion Substances 0.000 description 1
Images
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
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
- F04D7/045—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous with means for comminuting, mixing stirring or otherwise treating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
- B01D29/688—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles with backwash arms or shoes acting on the cake side
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/08—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers
- B02C18/10—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers with drive arranged above container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/24—Drives
-
- 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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M3/00—Portable or wheeled frames or beds, e.g. for emergency power-supply aggregates, compressor sets
Abstract
The invention discloses a novel crushing and water pumping integrated pump station, which relates to the technical field of water pumps and comprises a water pump. This novel smash integration pump station of drawing water is through setting up handle and strengthening rib for the device is convenient for remove, and the setting up of strengthening rib makes the structure of device more stable simultaneously, through setting up the valve and set up the flushing pipe into the L type, makes that the filter screen can be more abundant by the washing, and when the inlet tube absorbed water was avoided in the setting of valve simultaneously, water flowed from the flushing pipe, through leaving the distance between will smashing tool bit and the rotatory ring, avoids smashing the tool bit and damages the filter screen when rotating.
Description
Technical Field
The invention relates to the technical field of water pumps, in particular to a novel crushing and water pumping integrated pump station.
Background
Water pumps are machines that deliver or pressurize a liquid. It transfers the mechanical energy of prime mover or other external energy to liquid to increase the energy of liquid, mainly used to transfer liquid including oil, water, acid-base liquid, emulsion, liquid metal and suspoemulsion.
Need use the water pump when handling domestic sewage, nevertheless because often have domestic waste in the domestic sewage, some domestic waste are bulky, block up the water pump water sucking mouth easily, and the water pump shock attenuation effect is not enough when handling sewage simultaneously, all makes the life of water pump subtract the weak point.
Disclosure of Invention
The invention aims to provide a novel crushing and water pumping integrated pump station which has the advantages of blocking prevention and good shock absorption, and solves the problem that the service life of a water pump is shortened due to blocking or insufficient shock absorption of the water pump.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a novel smash integration pump station of drawing water, includes the water pump, the right flank fixedly connected with outlet pipe of water pump, the left surface fixedly connected with inlet tube of water pump, the surface of inlet tube is provided with the flushing pipe, the bottom of flushing pipe runs through the inlet tube and extends to the inside of inlet tube, the left surface of inlet tube is rotated and is connected with rotatory ring, rotatory ring's inside joint has the filter screen, rotatory ring's left surface is rotated and is connected with the straight tube, the outer fixed surface of straight tube is connected with the rubber pad, the upper surface joint of rubber pad has the motor.
Further, the bottom surface fixedly connected with bottom plate of water pump, the equal fixedly connected with piston in four edges of bottom plate bottom surface, every damping spring, every have all been placed to the inside of piston the top of damping spring all with the bottom surface fixed connection of bottom plate, every damping spring's bottom fixedly connected with piston rod, every the equal fixedly connected with universal wheel in bottom surface of piston rod.
Furthermore, the output end of the motor sequentially penetrates through the rubber pad and the straight pipe and extends to the inside of the straight pipe, and the outer surface of the straight pipe is fixedly connected with a crushing cutter head.
Furthermore, the upper surface of bottom plate fixedly connected with handle, the junction of inlet tube and water pump is provided with the strengthening rib.
Through adopting above-mentioned technical scheme for the device is convenient for remove, and the setting up of strengthening rib makes the structure of device more stable simultaneously.
Furthermore, the outer surface of the rotating ring is provided with rectangular stripes, and the rectangular stripes are in a circular array.
Through adopting above-mentioned technical scheme for rotatory ring is more convenient for by operating personnel rotatory.
Furthermore, the flushing pipe is L-shaped, and a valve is arranged on the outer surface of the flushing pipe.
Through adopting above-mentioned technical scheme for the filter screen can be more abundant by the washing, and when the setting of valve was avoided the inlet tube to absorb water simultaneously, water flowed from the flushing pipe.
Further, the upper surface fixed connection of rubber pad has the rand, the rand is with the surface looks joint of motor.
By adopting the technical scheme, the motor is more stable in operation.
Furthermore, crushing tool bit and straight tube looks adaptation, the bottom surface of rubber pad is the circular arc type.
Through adopting above-mentioned technical scheme for the bottom surface of rubber pad and the surface area of contact of straight tube increase, make the buffering effect better.
Furthermore, a distance is reserved between the crushing cutter head and the rotating ring, and the damping spring is in a natural state.
Through adopting above-mentioned technical scheme, avoid smashing the tool bit and damage the filter screen when rotating.
Compared with the prior art, this novel smash integration pump station that draws water possesses following beneficial effect:
1. according to the invention, the garbage in the sewage is crushed by the crushing cutter head, the sewage is filtered by the filter screen, so that the water pump is not easy to block, the rotating ring is rotated, and clear water is poured into the flushing pipe to clean the filter screen, so that the filtering capacity of the filter screen is not reduced when the filter screen is used next time.
2. The device is convenient to move by arranging the handle and the reinforcing ribs, the structure of the device is more stable by arranging the reinforcing ribs, the rotating ring is more convenient to rotate by an operator by arranging the rectangular stripes, the filter screen can be more fully cleaned by arranging the valve and arranging the flushing pipe into an L shape, water flows out of the flushing pipe when the water inlet pipe absorbs water by arranging the valve, the motor is more stable in operation by arranging the rubber pad and the clamping ring, the contact area between the bottom surface of the rubber pad and the outer surface of the straight pipe is increased by arranging the bottom surface of the rubber pad into the arc shape, the buffering effect is better, and the crushing cutter head is prevented from damaging the filter screen when rotating by arranging a distance between the crushing cutter head and the rotating ring.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a schematic front sectional view of the present invention;
fig. 4 is a schematic sectional structure of the piston of the present invention.
In the figure: 1. a water pump; 2. a base plate; 3. a piston; 4. a damping spring; 5. a piston rod; 6. a universal wheel; 7. a water outlet pipe; 8. a water inlet pipe; 9. a flush tube; 10. a rotating ring; 11. a filter screen; 12. a straight pipe; 13. a rubber pad; 14. a motor; 15. a crushing cutter head; 16. a handle; 17. reinforcing ribs; 18. rectangular stripes; 19. a valve; 20. and a collar.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a novel smash integration pump station of drawing water, including water pump 1, the bottom surface fixedly connected with bottom plate 2 of water pump 1, 1 model of water pump is RGB15-15, the last fixed surface of bottom plate 2 is connected with handle 16, inlet tube 8 is provided with strengthening rib 17 with water pump 1's junction, make the device be convenient for remove, setting up of strengthening rib 17 makes the structure of device more stable simultaneously, four equal fixedly connected with pistons 3 in edge of bottom plate 2 bottom surface, damping spring 4 has all been placed to every piston 3's inside, every damping spring 4's top all with bottom surface fixed connection of bottom plate 2, every damping spring 4's bottom fixedly connected with piston rod 5, the equal fixedly connected with universal wheel 6 in bottom surface of every piston rod 5.
The right side surface of the water pump 1 is fixedly connected with a water outlet pipe 7, the left side surface of the water pump 1 is fixedly connected with a water inlet pipe 8, the outer surface of the water inlet pipe 8 is provided with a flushing pipe 9, the flushing pipe 9 is L-shaped, the outer surface of the flushing pipe 9 is provided with a valve 19, so that the filter screen 11 can be more fully cleaned, meanwhile, when the water inlet pipe 8 absorbs water, water flows out from the flushing pipe 9, the bottom end of the flushing pipe 9 penetrates through the water inlet pipe 8 and extends into the water inlet pipe 8, the left side surface of the water inlet pipe 8 is rotatably connected with a rotating ring 10, the outer surface of the rotating ring 10 is provided with rectangular stripes 18, the rectangular stripes 18 are in a circular array, so that the rotating ring 10 is more convenient for being rotated by an operator, the filter screen 11 is clamped inside the rotating ring 10, the left side surface of the rotating ring 10 is rotatably, collar 20 and the surface looks joint of motor 14 for motor 14 is more stable when the operation, the upper surface joint of rubber pad 13 has motor 14, the model of motor 14 is YE2-80M2-40.75KW, rubber pad 13 and straight tube 12 are run through in proper order to the output of motor 14, and extend to the inside of straight tube 12, the external surface fixity s of straight tube 12 is connected with crushing cutter head 15, crushing cutter head 15 and straight tube 12 looks adaptation, the bottom surface of rubber pad 13 is the circular arc type, make the bottom surface of rubber pad 13 and the external surface area of contact of straight tube 12 increase, make the buffering effect better, leave one section distance between crushing cutter head 15 and the rotatory ring 10, damping spring 4 is natural state, avoid crushing cutter head 15 to damage filter screen 11 when rotating.
During the use, be linked together water pump 1 and motor 14 and municipal power supply, the left surface fixed connection hose of straight tube 12 stretches into the effluent water sump, motor 14 and water pump 1 during operation, motor 14's output drives crushing tool bit 15 and rotates, and then smashes rubbish in the sewage, sewage is filtered through filter screen 11, and then make water pump 1 be difficult for blockking up, the accessible is opened valve 19 and is poured the clear water into to the flushing pipe 9 is inside, rotatory ring 10 washes filter screen 11 simultaneously, when guaranteeing next use, the filter capacity of filter screen 11 does not reduce.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a novel smash integration pump station that draws water, includes water pump (1), its characterized in that: the water pump is characterized in that a water outlet pipe (7) is fixedly connected to the right side face of the water pump (1), a water inlet pipe (8) is fixedly connected to the left side face of the water pump (1), a flushing pipe (9) is arranged on the outer surface of the water inlet pipe (8), the bottom end of the flushing pipe (9) penetrates through the water inlet pipe (8) and extends to the inside of the water inlet pipe (8), a rotating ring (10) is rotatably connected to the left side face of the water inlet pipe (8), a filter screen (11) is clamped inside the rotating ring (10), a straight pipe (12) is rotatably connected to the left side face of the rotating ring (10), a rubber pad (13) is fixedly connected to the outer surface of.
2. The novel crushing and water pumping integrated pump station according to claim 1, characterized in that: the bottom surface fixedly connected with bottom plate (2) of water pump (1), the equal fixedly connected with piston (3) in four edges of bottom plate (2) bottom surface, damping spring (4) have all been placed to the inside of every piston (3), the top of every damping spring (4) all with the bottom surface fixed connection of bottom plate (2), the bottom fixedly connected with piston rod (5) of every damping spring (4), the equal fixedly connected with universal wheel (6) in bottom surface of every piston rod (5).
3. The novel crushing and water pumping integrated pump station according to claim 1, characterized in that: the output end of the motor (14) sequentially penetrates through the rubber pad (13) and the straight pipe (12) and extends to the inside of the straight pipe (12), and the outer surface of the straight pipe (12) is fixedly connected with a crushing cutter head (15).
4. The novel crushing and water pumping integrated pump station according to claim 2, characterized in that: the upper surface of the bottom plate (2) is fixedly connected with a handle (16), and a reinforcing rib (17) is arranged at the joint of the water inlet pipe (8) and the water pump (1).
5. The novel crushing and water pumping integrated pump station according to claim 1, characterized in that: the outer surface of the rotating ring (10) is provided with rectangular stripes (18), and the rectangular stripes (18) are in a circular array.
6. The novel crushing and water pumping integrated pump station according to claim 1, characterized in that: the flushing pipe (9) is L-shaped, and a valve (19) is arranged on the outer surface of the flushing pipe (9).
7. The novel crushing and water pumping integrated pump station according to claim 1, characterized in that: the upper surface of rubber pad (13) fixed connection has rand (20), and rand (20) and the surface looks joint of motor (14).
8. The novel crushing and water pumping integrated pump station according to claim 3, characterized in that: smash tool bit (15) and straight tube (12) looks adaptation, the bottom surface of rubber pad (13) is the circular arc type, smashes leaving a distance between tool bit (15) and rotatory ring (10), and damping spring (4) are natural state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911420577.7A CN111102203B (en) | 2019-12-31 | 2019-12-31 | Smash integration pump station that draws water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911420577.7A CN111102203B (en) | 2019-12-31 | 2019-12-31 | Smash integration pump station that draws water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111102203A true CN111102203A (en) | 2020-05-05 |
| CN111102203B CN111102203B (en) | 2021-03-12 |
Family
ID=70425953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911420577.7A Active CN111102203B (en) | 2019-12-31 | 2019-12-31 | Smash integration pump station that draws water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111102203B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111570044A (en) * | 2020-05-31 | 2020-08-25 | 黄彩省 | Sustainable water pump for water supply and drainage |
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|---|---|---|---|---|
| FR2475925A1 (en) * | 1980-02-19 | 1981-08-21 | Toyo Denki Kogyosho Co Ltd | FLUID AGITATOR ASSEMBLY |
| CN102729452A (en) * | 2012-07-19 | 2012-10-17 | 浙江大学 | Automatic circulation screen filter device for blow-molding melt |
| CN204175675U (en) * | 2014-10-27 | 2015-02-25 | 中国建筑第七工程局有限公司 | A kind of sewage pump preventing clogging up device |
| CN204458388U (en) * | 2014-12-12 | 2015-07-08 | 四川三台剑门泵业有限公司 | Anti-plugging sewage pump |
| CN205315287U (en) * | 2015-11-25 | 2016-06-15 | 天津市明奥泵业有限公司 | Prevent sewage pump that blocks up |
| CN107061296A (en) * | 2017-07-03 | 2017-08-18 | 江苏液泉泵阀制造有限公司 | A kind of dredge pump with crushing function |
| CN206845555U (en) * | 2017-04-12 | 2018-01-05 | 天津佳欣易科技有限公司 | A kind of feed pump that can be worked continuously with backwashing function |
| CN108167196A (en) * | 2017-12-26 | 2018-06-15 | 刘少非 | A kind of anticlogging remote control water pump |
| CN109394526A (en) * | 2018-10-18 | 2019-03-01 | 朱萌 | A kind of tcm internal medicine moxibustion therapy apparatus |
| CN208669629U (en) * | 2018-06-11 | 2019-03-29 | 石家庄金潜泵业有限公司 | Anti-clogging immersible pump |
-
2019
- 2019-12-31 CN CN201911420577.7A patent/CN111102203B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2475925A1 (en) * | 1980-02-19 | 1981-08-21 | Toyo Denki Kogyosho Co Ltd | FLUID AGITATOR ASSEMBLY |
| CN102729452A (en) * | 2012-07-19 | 2012-10-17 | 浙江大学 | Automatic circulation screen filter device for blow-molding melt |
| CN204175675U (en) * | 2014-10-27 | 2015-02-25 | 中国建筑第七工程局有限公司 | A kind of sewage pump preventing clogging up device |
| CN204458388U (en) * | 2014-12-12 | 2015-07-08 | 四川三台剑门泵业有限公司 | Anti-plugging sewage pump |
| CN205315287U (en) * | 2015-11-25 | 2016-06-15 | 天津市明奥泵业有限公司 | Prevent sewage pump that blocks up |
| CN206845555U (en) * | 2017-04-12 | 2018-01-05 | 天津佳欣易科技有限公司 | A kind of feed pump that can be worked continuously with backwashing function |
| CN107061296A (en) * | 2017-07-03 | 2017-08-18 | 江苏液泉泵阀制造有限公司 | A kind of dredge pump with crushing function |
| CN108167196A (en) * | 2017-12-26 | 2018-06-15 | 刘少非 | A kind of anticlogging remote control water pump |
| CN208669629U (en) * | 2018-06-11 | 2019-03-29 | 石家庄金潜泵业有限公司 | Anti-clogging immersible pump |
| CN109394526A (en) * | 2018-10-18 | 2019-03-01 | 朱萌 | A kind of tcm internal medicine moxibustion therapy apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111570044A (en) * | 2020-05-31 | 2020-08-25 | 黄彩省 | Sustainable water pump for water supply and drainage |
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| Publication number | Publication date |
|---|---|
| CN111102203B (en) | 2021-03-12 |
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