CN114576215B - Self-cleaning screw device - Google Patents
Self-cleaning screw device Download PDFInfo
- Publication number
- CN114576215B CN114576215B CN202210264530.1A CN202210264530A CN114576215B CN 114576215 B CN114576215 B CN 114576215B CN 202210264530 A CN202210264530 A CN 202210264530A CN 114576215 B CN114576215 B CN 114576215B
- Authority
- CN
- China
- Prior art keywords
- main body
- body basin
- air guide
- spiral
- self
- 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.)
- Active
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 23
- 230000003373 anti-fouling effect Effects 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 63
- 239000010802 sludge Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 230000008021 deposition Effects 0.000 abstract description 4
- 238000005202 decontamination Methods 0.000 abstract description 3
- 230000003588 decontaminative effect Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011284 combination treatment Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a self-cleaning spiral device, which comprises a main body basin, wherein the upper end of the main body basin is provided with an upper end air guide sleeve, an inlet flat flow table is arranged at the tangential position of the main body basin and the upper end air guide sleeve, an arc air guide baffle is arranged at the joint position of the main body basin and the inlet flat flow table, a spiral gradually-descending air guide table with a spiral structure is arranged in the main body basin, and the bottom of the spiral gradually-descending air guide table extends to the bottom of the main body basin; the invention overcomes the defects of the traditional pump station that the sludge deposition and the decontamination are difficult and the sludge discharge equipment is complex. The spiral device generates strong rotation water flow by utilizing the structure of the spiral device, and sundries in water are conveyed to the bottom of the basin and then are sucked and discharged by the water pump. The self-cleaning screw device is compact in structure, convenient to install and convenient to maintain, and hydraulic buildings do not need to be additionally built. The whole drainage self-cleaning process is energy-saving and environment-friendly, fully utilizes the mechanical energy of water flow, does not need extra mechanical equipment and power, and keeps the cylinder bottom clean and free of sundries.
Description
Technical Field
The invention relates to the technical field of water pumps, in particular to a self-cleaning spiral device.
Background
In the water treatment process, the water pump is used as an extremely important power device, and the stable and efficient operation of the water pump plays a decisive role in the whole water treatment process. The current water treatment process generally comprises the steps of collecting and then treating, and preprocessing sundries, sludge and the like which are easy to cause deposition and blockage before the water inlet of the water pump, so that the efficiency of the water pump is prevented from being reduced, and the water discharge is reduced.
The traditional pretreatment method comprises the following steps: the front pool of the water pump inlet is provided with a coarse grille, a fine grille, a sand setting pool, a primary sedimentation pool and the like, or the combination treatment of a plurality of modes. This requires more equipment investment and a larger footprint and is not suitable for small pump stations and integrated pump stations. The pump station is commonly used for changing the rotating speed of the water pump by a frequency converter or a frequency conversion motor, thereby achieving the purpose of adjusting the flow. However, no matter the variable frequency motor is adopted or a frequency converter is added, the variable frequency motor is an extra engineering investment compared with a conventional motor.
In order to solve the problems, we provide a self-cleaning screw device.
Disclosure of Invention
The present invention is directed to a self-cleaning screw device to solve the above-mentioned problems.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the self-cleaning spiral device comprises a main body basin, wherein an upper end guide cover is arranged at the upper end of the main body basin, an inlet flat flow platform is arranged at the upper end guide cover and along the tangential position of the main body basin, an arc guide baffle is arranged at the position where the main body basin is connected with the inlet flat flow platform, a spiral gradually-descending guide platform with a spiral structure is arranged in the main body basin, the bottom of the spiral gradually-descending guide platform extends to the bottom of the main body basin, the upper end of the spiral gradually-descending guide platform extends to be connected with the inlet flat flow platform, and a spiral guide plate is arranged at one side of the spiral gradually-descending guide platform;
the upper end kuppe is located the position of import advection platform one side and is equipped with the bevel baffle, the inboard upper end of upper end kuppe is equipped with the inclined plane guide plate that meets with the bevel baffle, main part basin lower extreme intermediate position is equipped with antifouling boss, main part basin lower extreme still is equipped with and is used for carrying out the steering assembly of adjustment to import advection platform direction.
As a further scheme of the invention: the steering assembly comprises an annular bearing, the annular bearing is arranged at the lower end of the main body basin, the inner ring of the annular bearing is fixedly connected with the main body basin, the outer ring of the annular bearing is further provided with a fixing assembly for fixedly mounting the annular bearing, the position, above the annular bearing, of the main body basin is provided with a ring gear, and one side of the outer ring of the annular bearing is further provided with a driving assembly for driving the main body basin to rotate in a matched mode with the ring gear.
As still further aspects of the invention: the fixed subassembly includes the backup pad, three backup pad upper end all with annular bearing outer lane fixed connection, three the backup pad is equidistant setting, the equal fixedly connected with mounting panel of backup pad lower extreme.
As still further aspects of the invention: the driving assembly comprises a waterproof motor, the waterproof motor is fixedly connected to the position of one side of the outer ring of the annular bearing, the output end of the waterproof motor is fixedly connected with a driving gear, and the driving gear is meshed with the annular gear.
As still further aspects of the invention: the mounting plate is close to the position of four angles and is provided with mounting holes.
As still further aspects of the invention: the driving gear is made of nylon materials.
As still further aspects of the invention: the circular arc guide baffle is a quarter circular arc.
As still further aspects of the invention: the support plate is fixedly connected with the annular bearing and the mounting plate in a welding mode.
As still further aspects of the invention: the waterproof motor is detachably connected with the annular bearing through screws.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention overcomes the defects of the traditional pump station that the sludge deposition and the decontamination are difficult and the sludge discharge equipment is complex. The spiral device generates strong rotation water flow by utilizing the structure of the spiral device, and sundries in water are conveyed to the bottom of the basin and then are sucked and discharged by the water pump. The self-cleaning screw device is compact in structure, convenient to install and convenient to maintain, and hydraulic buildings do not need to be additionally built. The whole drainage self-cleaning process is energy-saving and environment-friendly, fully utilizes the mechanical energy of water flow, does not need extra mechanical equipment and power, and keeps the cylinder bottom clean and free of sundries.
2. The invention can realize automatic flow regulation without changing the opening of the valve. The rotary strength of the water flow is changed along with the change of the water levels of the front water inlet and the rear water inlet, and meanwhile, the suction capacity of the water pump is changed, so that the automatic adjustment of the flow is realized.
3. The steering assembly is arranged, so that the direction of the inlet of the device can be adjusted when the device is used, and the inlet of the device can be correspondingly adjusted according to the distribution of sundries on the water surface when the device is used.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of a partial structure in the present invention.
Fig. 3 is a schematic structural view of a fixing assembly in the present invention.
Wherein: 1. arc guide baffle; 2. an inlet advection table; 3. a bevel baffle; 4. an upper pod; 5. a spiral gradually-descending guide table; 6. a spiral deflector; 7. an anti-fouling boss; 8. a main body basin; 9. a drive gear; 10. a waterproof motor; 11. an annular bearing; 12. a support plate; 13. a mounting plate; 14. a ring gear; 15. inclined plane guide plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
Referring to fig. 1-3, in an embodiment of the present invention, a self-cleaning screw device includes a main body basin 8, an upper end air guide sleeve 4 is disposed at an upper end of the main body basin 8, an inlet flat flow table 2 is disposed at a tangential position of the main body basin 8 and the upper end air guide sleeve 4, an arc air guide baffle 1 is disposed at a position where the main body basin 8 is connected with the inlet flat flow table 2, a spiral gradually lowering type air guide table 5 with a spiral structure is disposed in the main body basin 8, a bottom of the spiral gradually lowering type air guide table 5 extends to a bottom of the main body basin 8, an upper end of the spiral gradually lowering type air guide table 5 extends to be connected with the inlet flat flow table 2, and a spiral air guide plate 6 is disposed at one side of the spiral gradually lowering type air guide table 5; the circular arc guide baffle 1 is a quarter circular arc.
The invention overcomes the defects of the traditional pump station that the sludge deposition and the decontamination are difficult and the sludge discharge equipment is complex. The spiral device generates strong rotation water flow by utilizing the structure of the spiral device, and sundries in water are conveyed to the bottom of the basin and then are sucked and discharged by the water pump. The self-cleaning screw device is compact in structure, convenient to install and convenient to maintain, and hydraulic buildings do not need to be additionally built. The whole drainage self-cleaning process is energy-saving and environment-friendly, fully utilizes the mechanical energy of water flow, does not need extra mechanical equipment and power, and keeps the cylinder bottom clean and free of sundries.
The upper end of the upper end guide cover 4 is provided with an inclined baffle plate 3 at the position of one side of the inlet platform 2, the upper end of the inner side of the upper end guide cover 4 is provided with an inclined guide plate 15 connected with the inclined baffle plate 3, and the middle position of the lower end surface of the main body basin 8 is provided with an anti-fouling boss 7;
the invention can realize automatic flow regulation without changing the opening of the valve. The rotary strength of the water flow is changed along with the change of the water levels of the front water inlet and the rear water inlet, and meanwhile, the suction capacity of the water pump is changed, so that the automatic adjustment of the flow is realized.
The lower end of the main body basin 8 is also provided with a steering assembly for adjusting the direction of the inlet platform 2; the steering assembly is arranged, so that the direction of the inlet of the device can be adjusted when the device is used, and the inlet of the device can be correspondingly adjusted according to the distribution of sundries on the water surface when the device is used.
The steering assembly comprises an annular bearing 11, the annular bearing 11 is arranged at the lower end of the main body basin 8, an inner ring of the annular bearing 11 is fixedly connected with the main body basin 8, a fixing assembly for fixedly mounting the annular bearing 11 is further arranged at the outer ring of the annular bearing 11, a ring gear 14 is arranged at the position, above the annular bearing 11, of the main body basin 8, and a driving assembly for driving the main body basin 8 to rotate in a matched mode with the ring gear 14 is further arranged at one side of the outer ring of the annular bearing 11.
When the direction of the water inlet formed by the bevel baffle 3, the inlet platform 2 and the circular arc flow guide baffle 1 is adjusted, the ring gear 14 is driven to rotate by the driving assembly, the ring gear 14 rotates to drive the main basin 8 to rotate, and then the direction of the water inlet can be driven to be adjusted, so that the direction of the water inlet can be correspondingly adjusted as required during use.
The fixing assembly comprises support plates 12, the upper ends of the three support plates 12 are fixedly connected with the outer ring of the annular bearing 11, the three support plates 12 are arranged at equal intervals, and the lower ends of the support plates 12 are fixedly connected with mounting plates 13; mounting holes are formed in the positions, close to the four corners, of the mounting plate 13; the supporting plate 12 is fixedly connected with the annular bearing 11 and the mounting plate 13 in a welding mode; through the mounting hole that backup pad 12 and mounting panel 13 and the four angles of mounting panel 13 that set up, can be convenient for install the device on the prefabricated base in the pump station for it is more convenient to fix.
The driving assembly comprises a waterproof motor 10, the waterproof motor 10 is fixedly connected to the position of one side of the outer ring of the annular bearing 11, the output end of the waterproof motor 10 is fixedly connected with a driving gear 9, and the driving gear 9 is meshed with the annular gear 14; the waterproof motor 10 is detachably connected with the annular bearing 11 through screws; the driving gear 9 is made of nylon; when the waterproof motor 10 is started during operation, the waterproof motor 10 can drive the driving gear 9 to rotate, so that the purpose of driving the ring gear 14 to rotate is achieved, and meanwhile, the waterproof motor 10 installed by the bolts is adopted, so that the waterproof motor 10 can be conveniently detached.
The working principle of the invention is as follows: when in use, the water pump is arranged at the center of the self-cleaning spiral device, namely the center of the water pump is overlapped with the bottom anti-fouling boss 7. The water flow reaches the basin bottom after passing through the self-cleaning spiral device, and is pressurized and conveyed by the water pump. When the pump station is operated at high water level, water flows mainly through the inclined guide plate 15 of the upper water inlet. When the water level is lower than the upper edge of the inclined plane guide plate 15, water flow enters from the front water inlet and the inlet flat flow table 2, tangentially flows through a rotating channel surrounded by the spiral gradually-descending guide table 5 and the spiral guide plate 6, in the rotating channel, the rotating direction of the water flow is consistent with the rotating direction of the water pump, the rotating strength is gradually enhanced, and when the water reaches the basin bottom, the rotating strength is maximum, so that sundries in water are driven to the basin bottom at a high speed, and then discharged through the water pump, and self-cleaning of a pump station is realized. As the water level in the main basin 8 decreases, the rotational speed of the water flow formed by the spiral gradually-decreasing type diversion table 5 and the spiral diversion plate 6 decreases, so that the rotational strength and flow rate of the water flow reaching the basin also decrease. Thus, the water pump can automatically adjust the flow. When the water level drops to the bottom, the flow is minimal.
Due to the rotation effect of the water flow and the water inflow around the suction inlet of the water pump, a certain negative pressure area is generated in the center, so that an anti-fouling boss 7 is arranged in the center of the basin bottom, sludge accumulation in the center position can be avoided, and the suction range of the water pump can be effectively enlarged.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Although the present disclosure describes embodiments in terms of one embodiment, not every embodiment is provided with only one embodiment, and the description is for clarity only, and those skilled in the art should recognize that the embodiments described in the disclosure may be combined appropriately to form other embodiments that will be understood by those skilled in the art.
Claims (6)
1. Self-cleaning screw device, comprising a main body basin (8), characterized in that: the upper end of the main body basin (8) is provided with an upper end air guide sleeve (4), the main body basin (8) and the upper end air guide sleeve (4) are provided with an inlet flat flow table (2) along tangential positions, an arc air guide baffle (1) is arranged at the position where the main body basin (8) is connected with the inlet flat flow table (2), a spiral gradually-descending air guide table (5) with a spiral structure is arranged in the main body basin (8), the bottom of the spiral gradually-descending air guide table (5) extends to the bottom of the main body basin (8), the upper end of the spiral gradually-descending air guide table (5) extends to be connected with the inlet flat flow table (2), and one side of the spiral gradually-descending air guide table (5) is provided with a spiral air guide plate (6);
the upper end flow guide cover (4) is provided with a bevel baffle (3) at a position at one side of the inlet platform (2), the upper end of the inner side of the upper end flow guide cover (4) is provided with a bevel baffle (15) connected with the bevel baffle (3), the middle position of the lower end surface of the main body basin (8) is provided with an anti-fouling boss (7), and the lower end of the main body basin (8) is also provided with a steering assembly for adjusting the direction of the inlet platform (2);
the steering assembly comprises an annular bearing (11), the annular bearing (11) is arranged at the lower end of the main body basin (8), the inner ring of the annular bearing (11) is fixedly connected with the main body basin (8), a fixing assembly for fixedly mounting the annular bearing (11) is further arranged at the outer ring of the annular bearing (11), a ring gear (14) is arranged at the position, above the annular bearing (11), of the main body basin (8), and a driving assembly for driving the main body basin (8) to rotate in a matched mode with the ring gear (14) is further arranged at one side of the outer ring of the annular bearing (11);
the fixing assembly comprises supporting plates (12), the upper ends of the three supporting plates (12) are fixedly connected with the outer ring of the annular bearing (11), the three supporting plates (12) are arranged at equal intervals, and the lower ends of the supporting plates (12) are fixedly connected with mounting plates (13);
the driving assembly comprises a waterproof motor (10), the waterproof motor (10) is fixedly connected to the position of one side of the outer ring of the annular bearing (11), the output end of the waterproof motor (10) is fixedly connected with a driving gear (9), and the driving gear (9) is meshed with the annular gear (14).
2. Self-cleaning screw device according to claim 1, characterized in that the mounting plates (13) are provided with mounting holes at positions close to the four corners.
3. Self-cleaning screw device according to claim 1, characterized in that the driving gear (9) is made of nylon material.
4. A self-cleaning screw device according to claim 1, characterized in that the circular arc deflector (1) is a quarter circular arc.
5. Self-cleaning screw device according to claim 1, characterized in that the support plate (12) is fixedly connected to both the annular bearing (11) and the mounting plate (13) by means of welding.
6. Self-cleaning screw device according to claim 1, characterized in that the waterproof motor (10) is detachably connected to the ring bearing (11) by means of screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210264530.1A CN114576215B (en) | 2022-03-17 | 2022-03-17 | Self-cleaning screw device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210264530.1A CN114576215B (en) | 2022-03-17 | 2022-03-17 | Self-cleaning screw device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114576215A CN114576215A (en) | 2022-06-03 |
| CN114576215B true CN114576215B (en) | 2023-11-28 |
Family
ID=81780592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210264530.1A Active CN114576215B (en) | 2022-03-17 | 2022-03-17 | Self-cleaning screw device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114576215B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1113126A (en) * | 1997-06-23 | 1999-01-19 | Kubota Corp | Prewhirl tank |
| US5871304A (en) * | 1996-04-25 | 1999-02-16 | Envirotech Pumpsystems, Inc. | Precast prerotation basin system |
| JPH11148499A (en) * | 1997-11-12 | 1999-06-02 | Kubota Corp | Vertical shaft pump set in prewhirl type suction channel |
| JP2006307515A (en) * | 2005-04-28 | 2006-11-09 | Ebara Kiden Kk | Mounting structure of pump mounting base, and manhole pumping system |
| CN201981645U (en) * | 2011-03-29 | 2011-09-21 | 杭州诺成自动化系统工程有限公司 | Well type pump station capable of generating prewhirling water flow |
| CN202969567U (en) * | 2012-11-27 | 2013-06-05 | 青岛理工新环境技术开发有限公司 | Assembled buried sewage pumping station |
| CN106013409A (en) * | 2016-06-30 | 2016-10-12 | 海斯特(青岛)泵业有限公司 | Prerotation device for water pump |
| CN206015856U (en) * | 2016-06-15 | 2017-03-15 | 杭州汉桥市政工程有限公司 | Rotating flow is from the integrated pumping plant in clear pond |
| CN207111454U (en) * | 2017-08-14 | 2018-03-16 | 南洋泵业（青岛）有限公司 | A kind of basin of prewhirling for reducing power of motor indirectly |
| CN109440867A (en) * | 2018-11-21 | 2019-03-08 | 江苏大学 | A kind of self-cleaning basin integrated pump station of prewhirling |
| CN111441462A (en) * | 2020-04-02 | 2020-07-24 | 明光市留香泵业有限公司 | Water pump production prerotation device |
| CN212689185U (en) * | 2020-07-07 | 2021-03-12 | 山东南洋环境科技有限公司 | Integrated assembly type deep tunnel storage-regulation pump station |
-
2022
- 2022-03-17 CN CN202210264530.1A patent/CN114576215B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5871304A (en) * | 1996-04-25 | 1999-02-16 | Envirotech Pumpsystems, Inc. | Precast prerotation basin system |
| JPH1113126A (en) * | 1997-06-23 | 1999-01-19 | Kubota Corp | Prewhirl tank |
| JPH11148499A (en) * | 1997-11-12 | 1999-06-02 | Kubota Corp | Vertical shaft pump set in prewhirl type suction channel |
| JP2006307515A (en) * | 2005-04-28 | 2006-11-09 | Ebara Kiden Kk | Mounting structure of pump mounting base, and manhole pumping system |
| CN201981645U (en) * | 2011-03-29 | 2011-09-21 | 杭州诺成自动化系统工程有限公司 | Well type pump station capable of generating prewhirling water flow |
| CN202969567U (en) * | 2012-11-27 | 2013-06-05 | 青岛理工新环境技术开发有限公司 | Assembled buried sewage pumping station |
| CN206015856U (en) * | 2016-06-15 | 2017-03-15 | 杭州汉桥市政工程有限公司 | Rotating flow is from the integrated pumping plant in clear pond |
| CN106013409A (en) * | 2016-06-30 | 2016-10-12 | 海斯特(青岛)泵业有限公司 | Prerotation device for water pump |
| CN207111454U (en) * | 2017-08-14 | 2018-03-16 | 南洋泵业（青岛）有限公司 | A kind of basin of prewhirling for reducing power of motor indirectly |
| CN109440867A (en) * | 2018-11-21 | 2019-03-08 | 江苏大学 | A kind of self-cleaning basin integrated pump station of prewhirling |
| CN111441462A (en) * | 2020-04-02 | 2020-07-24 | 明光市留香泵业有限公司 | Water pump production prerotation device |
| CN212689185U (en) * | 2020-07-07 | 2021-03-12 | 山东南洋环境科技有限公司 | Integrated assembly type deep tunnel storage-regulation pump station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114576215A (en) | 2022-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210859363U (en) | Water pumping pump for urban open-cut tunnel construction | |
| CN204703293U (en) | Pipeline cleaning equipment under small-sized well | |
| CN110217841B (en) | Deodorant effluent water sump of high-efficient blowdown | |
| CN114576215B (en) | Self-cleaning screw device | |
| WO2010009629A1 (en) | A hydrodynamic cooling fan for a cooling tower with high efficiency and saving-energy | |
| CN211996074U (en) | Vortex type water surface garbage cleaning robot | |
| CN111114707A (en) | Water surface garbage cleaning robot | |
| CN211969689U (en) | Liftable surface of water rubbish cleaning machines people | |
| CN211969688U (en) | Water surface garbage cleaning robot | |
| CN211971922U (en) | High-efficiency energy-saving aerator | |
| CN114776596A (en) | Single-stage blade type centrifugal pump with liquid drainage, filter residue and slag removal functions | |
| CN220225496U (en) | River channel dredging device | |
| CN215058232U (en) | Submersible jet aeration pump | |
| CN110500282A (en) | A kind of Dual-motors Driving pendular ring screw pump | |
| CN220695930U (en) | Efficient vacuum mud lifting device for advection sedimentation tank | |
| CN111137410A (en) | Liftable surface of water rubbish cleaning machines people | |
| CN213012012U (en) | Adjusting tank of semiconductor wastewater treatment system | |
| CN219022376U (en) | Nursing device | |
| CN212687855U (en) | Novel energy-efficient sewage integration treatment facility | |
| CN220176144U (en) | Rotational flow sand settling device for hydraulic engineering | |
| CN216778158U (en) | Pure hydraulic drive filter in front of submersible pump | |
| CN211141650U (en) | Anaerobic and aerobic integrated MBBR sewage treatment equipment in energy-saving intermittent type manner | |
| CN220647949U (en) | Construction site hydroelectric power generation lighting device utilizing dewatering well | |
| CN215860806U (en) | Axial-flow pump easy to assemble and later maintenance | |
| CN214533635U (en) | Fan convenient to adjust air outlet size |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |