CN112343154A - Energy-concerving and environment-protective wisdom urban road drainage anti-clogging device - Google Patents
Energy-concerving and environment-protective wisdom urban road drainage anti-clogging device Download PDFInfo
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- CN112343154A CN112343154A CN202011003065.3A CN202011003065A CN112343154A CN 112343154 A CN112343154 A CN 112343154A CN 202011003065 A CN202011003065 A CN 202011003065A CN 112343154 A CN112343154 A CN 112343154A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/0401—Gullies for use in roads or pavements
- E03F5/0402—Gullies for use in roads or pavements provided with flushing means for cleaning or emptying
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/06—Gully gratings
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F9/00—Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
- E03F9/002—Cleaning sewer pipes by mechanical means
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
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- Water Supply & Treatment (AREA)
- Transmission Devices (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention relates to the technical field of smart cities, and discloses an energy-saving and environment-friendly smart city road drainage anti-blocking device which comprises a support, wherein the top of the support is movably connected with a rain grate, the inside of the support is movably connected with a guide rail, two sides of the bottom of the guide rail are fixedly connected with floating blocks, the outside of each floating block is movably connected with a U-shaped cavity, the bottom of each U-shaped cavity is movably connected with a blocking block, the inside of the guide rail is movably connected with a brush rod, and the bottom of each brush rod is hinged with a connecting rod. Through the cooperation use of turbine dish, adversion ring, energy storage strip, outer lantern ring, transmission ratchet, drive gear, worm, energy storage ratchet and fork axostylus axostyle to having reached and effectively having guaranteed telescopic shaft pivoted stability, providing pivoted mechanical energy simultaneously through fork axostylus axostyle and turbine dish, effectively improving the device's result of use, and utilizing the rainwater automatic rotation, effectively reducing the energy effect, reach energy-concerving and environment-protective effect, effectively guarantee simultaneously and prevent the promptness of blocking up the clearance.
Description
Technical Field
The invention relates to the technical field of smart cities, in particular to an energy-saving and environment-friendly road drainage anti-blocking device for a smart city.
Background
The smart city senses, analyzes and integrates various key information of a city operation core system by means of information and communication technology, wherein in an urban road drainage system, drainage is usually carried out by arranging rain grates on two sides of a road to be communicated with a sewer.
However, the existing drainage rain grate is simple in structure and is blocked frequently in the drainage process, so that the drainage effect of a road is influenced, accumulated water is generated on the road, the traffic safety is influenced, and when the blockage is cleared, sanitation workers are required to clear the blockage, the work efficiency is low, the clearing effect is poor, a large amount of manpower is required to be input, and the labor cost is greatly increased.
In order to solve the problems, the inventor provides an energy-saving and environment-friendly intelligent urban road drainage anti-blocking device which has the advantages of automatically cleaning accumulated sundries on a rain grate, effectively preventing drainage blocking, improving drainage effect, preventing accumulated water on roads, reducing manpower input, effectively improving cleaning efficiency, ensuring cleaning timeliness and ensuring cleaning effect by automatically cleaning with rainwater.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an energy-concerving and environment-protective wisdom urban road drainage anti-clogging device, includes support, rain grate, guide rail, floats piece, U-shaped chamber, sprue, brush-holder stud, connecting rod, telescopic shaft, turbine disc, adversion ring, energy storage strip, outer collar, transmission ratchet, drive gear, worm, energy storage ratchet, fork axostylus axostyle.
The positions and the connection relations of the structures are as follows:
the top of the bracket is movably connected with a rain grate, the inside of the bracket is movably connected with a guide rail, two sides of the bottom of the guide rail are fixedly connected with floating blocks, the outside of each floating block is movably connected with a U-shaped cavity, the bottom of the U-shaped cavity is movably connected with a blocking block, the inside of the guide rail is movably connected with a brush rod, the bottom of the brush rod is hinged with a connecting rod, the outside of the connecting rod is hinged with a telescopic shaft, the bottom of the telescopic shaft is fixedly connected with a turbine disc, the outside of the telescopic shaft is movably connected with an inner rotating ring, the outside of the inner rotating ring is fixedly connected with an energy storage strip, the outside of the energy storage strip is fixedly connected with an outer sleeve ring, the outside of the outer sleeve ring is meshed with a transmission ratchet wheel, the outside of the transmission ratchet wheel is fixedly connected with a transmission, the energy storage ratchet wheel is movably connected with a fork shaft rod outside.
Preferably, the blocking block is movably connected to the communicated position at the bottom of the U-shaped cavity, a supporting spring is arranged at the bottom of the blocking block, a communicating hole is formed in one side, close to the telescopic shaft, of the U-shaped cavity, and the communicating hole is communicated with the inside of the support.
Preferably, the length of the brush rod is matched with the width of the rain grate, the top of the brush rod is provided with a sewage draining tooth, and the sewage draining tooth is movably connected inside the water leaking hole of the rain grate.
Preferably, the connecting rod consists of an inner loop bar and an outer loop bar, and a return spring is arranged between the two loop bars.
Preferably, the telescopic shaft is rotatably connected inside the bracket, and the axis of the telescopic shaft is collinear with the central vertical line of the bracket.
Preferably, the turbine disc is movably connected to the bottom of the water outlet inside the support, a mesh enclosure is arranged at the top of the turbine disc, and the mesh enclosure is fixedly connected to the inside of the support.
Preferably, a one-way limiting mechanism is arranged between the inner rotating ring and the telescopic shaft, and the inner rotating ring, the energy storage strip and the outer sleeve ring are movably connected inside the support center block.
Preferably, the transmission ratchet wheel and the transmission gear are rotatably connected inside the bracket, and the inner shaft of the transmission gear is fixedly connected with the inner shaft of the transmission ratchet wheel.
Preferably, the energy storage ratchet wheels are positioned at two sides of the worm, the worm is respectively and fixedly connected with inner shafts of the energy storage ratchet wheels at the two sides, and the energy storage ratchet wheels consist of inner ratchet wheels and outer ratchet rings.
Advantageous effects
Compared with the prior art, the invention provides an energy-saving and environment-friendly intelligent urban road drainage anti-blocking device, which has the following beneficial effects:
1. this energy-concerving and environment-protective wisdom urban road drainage anti-clogging device, through the turbine dish, the adversion ring, the energy storage strip, the outer lantern ring, the transmission ratchet, drive gear, the worm, the cooperation of energy storage ratchet and fork axostylus axostyle is used, thereby reached and effectively guaranteed telescopic shaft pivoted stability, provide pivoted mechanical energy simultaneously through fork axostylus axostyle and turbine dish, effectively improve the device's result of use, and utilize the rainwater to rotate automatically, effectively reduce the energy effect, reach energy-concerving and environment-protective effect, effectively guarantee simultaneously and prevent the promptness of stifled clearance.
2. This energy-concerving and environment-protective wisdom urban road drainage anti-clogging device uses through the cooperation of guide rail, floating block, U-shaped chamber, sprue and brush-holder stud to reach the effect of the height of automatically regulated brush-holder stud, further guaranteed the clearance effect of brush-holder stud, effectively guaranteed the smoothness nature of road drainage, prevent road ponding, thereby guarantee traffic safety, reduce the traffic hidden danger.
Drawings
FIG. 1 is a schematic view of the overall connection of the structure of the present invention;
FIG. 2 is a schematic view of the internal connection of the center block of the structural brace of the present invention;
FIG. 3 is an enlarged view of part A of the structure of FIG. 2;
FIG. 4 is a schematic view of a cross-sectional view B-B of FIG. 1 according to the present invention;
FIG. 5 is a schematic view of the structure of the present invention, wherein the outer collar, the transmission ratchet, the transmission gear, the worm, the energy storage ratchet and the fork shaft rod are connected;
FIG. 6 is a schematic view showing the moving state of the brush rod according to the present invention.
In the figure: 1. a support; 2. a rain grate; 3. a guide rail; 4. floating blocks; 5. a U-shaped cavity; 6. blocking; 7. a brush bar; 8. a connecting rod; 9. a telescopic shaft; 10. a turbine disk; 11. an inner swivel; 12. an energy storage bar; 13. an outer collar; 14. a driving ratchet wheel; 15. a transmission gear; 16. a worm; 17. an energy storage ratchet wheel; 18. a fork shaft lever.
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. 1-6, an energy-saving and environment-friendly intelligent urban road drainage anti-blocking device comprises a bracket 1, a rain grate 2, a guide rail 3, a floating block 4, a U-shaped cavity 5, a blocking block 6, a brush rod 7, a connecting rod 8, a telescopic shaft 9, a turbine disc 10, an inner rotating ring 11, an energy storage bar 12, an outer sleeve ring 13, a transmission ratchet 14, a transmission gear 15, a worm 16, an energy storage ratchet 17 and a fork shaft rod 18.
The positions and the connection relations of the structures are as follows:
the top of the bracket 1 is movably connected with a rain grate 2, the inside of the bracket 1 is movably connected with a guide rail 3, two sides of the bottom of the guide rail 3 are fixedly connected with floating blocks 4, the outside of the floating blocks 4 is movably connected with a U-shaped cavity 5, the bottom of the U-shaped cavity 5 is movably connected with a blocking block 6, the inside of the guide rail 3 is movably connected with a brush rod 7, the bottom of the brush rod 7 is hinged with a connecting rod 8, the outside of the connecting rod 8 is hinged with a telescopic shaft 9, the bottom of the telescopic shaft 9 is fixedly connected with a turbine disc 10, the outside of the telescopic shaft 9 is movably connected with an inner rotating ring 11, the outside of the inner rotating ring 11 is fixedly connected with an energy storage strip 12, the outside of the energy storage strip 12 is fixedly connected with an outer sleeve ring 13, the outside of the outer sleeve 13 is meshed with a transmission ratchet wheel 14, the outside of the, the outside of the energy storage ratchet wheel 17 is movably connected with a fork shaft rod 18.
Wherein:
a, the blocking block 6 is movably connected to the communicated position at the bottom of the U-shaped cavity 5, a supporting spring is arranged at the bottom of the blocking block 6, a communicating hole is formed in one side, close to the telescopic shaft 9, of the U-shaped cavity 5, and the communicating hole is communicated with the inside of the support 1.
And b, the length of the brush rod 7 is matched with the width of the rain grate 2, and the top of the brush rod 7 is provided with a sewage discharge tooth which is movably connected inside the water leakage hole of the rain grate 2.
And c, the connecting rod 8 consists of an inner loop bar and an outer loop bar, and a return spring is arranged between the two loop bars.
d, the telescopic shaft 9 is rotatably connected inside the bracket 1, and the axis of the telescopic shaft 9 is collinear with the central vertical line of the bracket 1.
e, the turbine disc 10 is movably connected to the bottom of the water outlet inside the support 1, a mesh enclosure is arranged at the top of the turbine disc 10, and the mesh enclosure is fixedly connected to the inside of the support 1.
f, a one-way limiting mechanism is arranged between the inner rotating ring 11 and the telescopic shaft 9, and the inner rotating ring 11, the energy storage strips 12 and the outer collar 13 are movably connected inside the central block of the support 1.
g, the transmission ratchet wheel 14 and the transmission gear 15 are rotatably connected inside the bracket 1, and the inner shaft of the transmission gear 15 is fixedly connected with the inner shaft of the transmission ratchet wheel 14.
And h, the energy storage ratchet wheels 17 are positioned at two sides of the worm 16, the worm 16 is respectively and fixedly connected with inner shafts of the energy storage ratchet wheels 17 at the two sides, and the energy storage ratchet wheels 17 consist of inner ratchet wheels and outer ratchet rings.
The working process and the principle are that when the rainwater is large, the rainwater is drained through the rain grate 2, meanwhile, the rainwater passes through the U-shaped cavity 5, the blocking block 6 is movably connected at the communicated position of the bottom of the U-shaped cavity 5, the bottom of the blocking block 6 is provided with the supporting spring, the side, close to the telescopic shaft 9, of the U-shaped cavity 5 is provided with the communicating hole, the communicating hole is communicated with the inside of the bracket 1, because the rainwater is large, the drainage speed of the communicating hole of the U-shaped cavity 5 is far lower than the water inlet speed of the inner cavity of the U-shaped cavity 5, so that the liquid level in the inner cavity is continuously raised, the blocking block 6 is pushed to move downwards under the action of water pressure, so that the rainwater enters the inside of the outer side wall, according to the principle of the communicating device, the liquid levels on two sides of the U-shaped cavity 5 tend to be level, so that the liquid level of the outer cavity, the sewage draining teeth of the brush rod 7 are positioned inside the water leakage holes of the rain grate 2.
Referring to fig. 2, when rainwater flows downwards in the bracket 1, the water flows through the turbine disk 10, and the turbine disk 10 is rotated by the impact of the water flow, so that the turbine disk 10 drives the telescopic shaft 9 to rotate.
Referring to fig. 3-5, when rainwater flows in the interior of the bracket 1, when the rainwater passes through the fork shaft lever 18, the rainwater drives the fork shaft lever 18 to swing, the energy storage ratchet 17 is driven to rotate during the swing of the fork shaft lever 18, the energy storage ratchet 17 drives the transmission gear 15 to rotate through the worm 16, since the transmission ratchet 14 and the transmission gear 15 are both rotatably connected in the interior of the bracket 1, and the inner shaft of the transmission gear 15 is fixedly connected with the inner shaft of the transmission ratchet 14, the transmission gear 15 drives the outer collar 13 to rotate through the transmission ratchet 14, the outer collar 13 rotates to enable the energy storage bar 12 to store mechanical energy and release mechanical energy through the inner rotating ring 11, so that the telescopic shaft 9 is bored through the outer collar 13 to rotate, thereby effectively ensuring the stability of the rotation of the telescopic shaft 9, and providing rotational mechanical energy through the fork shaft lever 18 and the turbine disc 10 at the same time, effectively, and rainwater is utilized to automatically rotate, so that the energy effect is effectively reduced, the energy-saving and environment-friendly effects are achieved, and meanwhile, the timeliness of anti-blocking cleaning is effectively guaranteed.
Referring to fig. 6, when the telescopic shaft 9 is driven by the fork shaft rod 18 and the turbine disc 10 to rotate, the telescopic shaft 9 drives the brush rod 7 to slide in a reciprocating manner inside the water leakage hole of the rain-entering grate 2 through the connecting rod 8, and the brush rod 7 rises to a certain height through the action of the floating block 4 and the guide rail 3, so that the cleaning effect of the brush rod 7 is further ensured, the smoothness of road drainage is effectively ensured, road water accumulation is prevented, traffic safety is ensured, and traffic hidden troubles are reduced.
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 (9)
1. The utility model provides an energy-concerving and environment-protective wisdom urban road drainage anti-clogging device, includes support (1), its characterized in that: the rain grate is movably connected to the top of the support (1), a guide rail (3) is movably connected to the inside of the support (1), floating blocks (4) are fixedly connected to two sides of the bottom of the guide rail (3), a U-shaped cavity (5) is movably connected to the outside of each floating block (4), a blocking block (6) is movably connected to the bottom of each U-shaped cavity (5), a brush rod (7) is movably connected to the inside of the guide rail (3), a connecting rod (8) is hinged to the bottom of each brush rod (7), a telescopic shaft (9) is hinged to the outside of each connecting rod (8), a turbine disc (10) is fixedly connected to the bottom of each telescopic shaft (9), an inner rotating ring (11) is movably connected to the outside of each telescopic shaft (9), an energy storage strip (12) is fixedly connected to the outside of each inner rotating ring (11), and an outer sleeve ring (13) is fixedly connected to the outside of each, the outer meshing of the outer collar (13) is connected with a transmission ratchet wheel (14), the outer part of the transmission ratchet wheel (14) is fixedly connected with a transmission gear (15), the outer meshing of the transmission gear (15) is connected with a worm (16), the outer part of the worm (16) is movably connected with an energy storage ratchet wheel (17), and the outer part of the energy storage ratchet wheel (17) is movably connected with a fork shaft rod (18).
2. The energy-saving and environment-friendly intelligent urban road drainage anti-blocking device as claimed in claim 1, is characterized in that: the blocking block (6) is movably connected to the communicated position of the bottom of the U-shaped cavity (5), a supporting spring is arranged at the bottom of the blocking block (6), a communicating hole is formed in one side, close to the telescopic shaft (9), of the U-shaped cavity (5), and the communicating hole is communicated with the inside of the support (1).
3. The energy-saving and environment-friendly intelligent urban road drainage anti-blocking device as claimed in claim 1, is characterized in that: the length of the brush rod (7) is matched with the width of the rain grate (2), and the top of the brush rod (7) is provided with a sewage draining tooth which is movably connected inside the water leakage hole of the rain grate (2).
4. The energy-saving and environment-friendly intelligent urban road drainage anti-blocking device as claimed in claim 1, is characterized in that: the connecting rod (8) is composed of an inner loop bar and an outer loop bar, and a return spring is arranged between the two loop bars.
5. The energy-saving and environment-friendly intelligent urban road drainage anti-blocking device as claimed in claim 1, is characterized in that: the telescopic shaft (9) is rotatably connected inside the support (1), and the axis of the telescopic shaft (9) and the center perpendicular line of the support (1) are collinear.
6. The energy-saving and environment-friendly intelligent urban road drainage anti-blocking device as claimed in claim 1, is characterized in that: the turbine disc (10) is movably connected to the bottom of the water outlet inside the support (1), a mesh enclosure is arranged at the top of the turbine disc (10), and the mesh enclosure is fixedly connected to the inside of the support (1).
7. The energy-saving and environment-friendly intelligent urban road drainage anti-blocking device as claimed in claim 1, is characterized in that: a one-way limiting mechanism is arranged between the inner rotating ring (11) and the telescopic shaft (9), and the inner rotating ring (11), the energy storage strip (12) and the outer sleeve ring (13) are movably connected inside the central block of the bracket (1).
8. The energy-saving and environment-friendly intelligent urban road drainage anti-blocking device as claimed in claim 1, is characterized in that: the transmission ratchet wheel (14) and the transmission gear (15) are rotatably connected inside the bracket (1), and an inner shaft of the transmission gear (15) is fixedly connected with an inner shaft of the transmission ratchet wheel (14).
9. The energy-saving and environment-friendly intelligent urban road drainage anti-blocking device as claimed in claim 1, is characterized in that: the energy storage ratchet wheels (17) are positioned on two sides of the worm (16), the worm (16) is fixedly connected with inner shafts of the energy storage ratchet wheels (17) on the two sides respectively, and the energy storage ratchet wheels (17) are composed of inner ratchet wheels and outer ratchet rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011003065.3A CN112343154B (en) | 2020-09-22 | 2020-09-22 | Energy-concerving and environment-protective wisdom urban road drainage anti-clogging device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011003065.3A CN112343154B (en) | 2020-09-22 | 2020-09-22 | Energy-concerving and environment-protective wisdom urban road drainage anti-clogging device |
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| Publication Number | Publication Date |
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| CN112343154A true CN112343154A (en) | 2021-02-09 |
| CN112343154B CN112343154B (en) | 2022-01-25 |
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| CN202011003065.3A Active CN112343154B (en) | 2020-09-22 | 2020-09-22 | Energy-concerving and environment-protective wisdom urban road drainage anti-clogging device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177841A (en) * | 2020-09-25 | 2021-01-05 | 环誉节能科技(广州)有限公司 | Ocean power generation device convenient to maintain and overhaul |
| CN113617778A (en) * | 2021-08-16 | 2021-11-09 | 赵红卫 | Blood internal medicine household utensils cleaning and sterilizing equipment |
| CN114589147A (en) * | 2022-01-19 | 2022-06-07 | 重庆厨切电器有限公司 | Multi-shaft brushing method and device |
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| DE202007014331U1 (en) * | 2007-10-12 | 2008-01-03 | Roval Umwelt Technologien Vertriebsgesellschaft Mbh | Sewerage inlet |
| CN104652594A (en) * | 2015-02-09 | 2015-05-27 | 杭州维尔利立体车库停车场 | Floating type automatically-closable inspection well cover and operation method thereof |
| CN206070718U (en) * | 2016-10-10 | 2017-04-05 | 杨朝辉 | Unpowered automatic cleaning floor drain grate device |
| CN108331133A (en) * | 2017-12-29 | 2018-07-27 | 曹先锋 | A kind of road anti-clogging drainage arrangement and its application method |
| CN211114006U (en) * | 2019-10-08 | 2020-07-28 | 江苏诣钦工程建设有限公司 | Prevent municipal drainage device of jam |
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2020
- 2020-09-22 CN CN202011003065.3A patent/CN112343154B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202007014331U1 (en) * | 2007-10-12 | 2008-01-03 | Roval Umwelt Technologien Vertriebsgesellschaft Mbh | Sewerage inlet |
| CN104652594A (en) * | 2015-02-09 | 2015-05-27 | 杭州维尔利立体车库停车场 | Floating type automatically-closable inspection well cover and operation method thereof |
| CN206070718U (en) * | 2016-10-10 | 2017-04-05 | 杨朝辉 | Unpowered automatic cleaning floor drain grate device |
| CN108331133A (en) * | 2017-12-29 | 2018-07-27 | 曹先锋 | A kind of road anti-clogging drainage arrangement and its application method |
| CN211114006U (en) * | 2019-10-08 | 2020-07-28 | 江苏诣钦工程建设有限公司 | Prevent municipal drainage device of jam |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177841A (en) * | 2020-09-25 | 2021-01-05 | 环誉节能科技(广州)有限公司 | Ocean power generation device convenient to maintain and overhaul |
| CN112177841B (en) * | 2020-09-25 | 2022-10-18 | 环誉节能科技(广州)有限公司 | Ocean power generation device convenient to maintain and overhaul |
| CN113617778A (en) * | 2021-08-16 | 2021-11-09 | 赵红卫 | Blood internal medicine household utensils cleaning and sterilizing equipment |
| CN114589147A (en) * | 2022-01-19 | 2022-06-07 | 重庆厨切电器有限公司 | Multi-shaft brushing method and device |
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| CN112343154B (en) | 2022-01-25 |
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Effective date of registration: 20220105 Address after: Room A318, 3 / F, building a, 289 futexi 1st Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai 200131 Applicant after: SHANGHAI NEW ERA CIVIL AVIATION AIRPORT DESIGN AND RESEARCH INSTITUTE Co.,Ltd. Address before: 325000 Dongshou, room 1203, building F, South business city, Wenzhou Railway Station, Ouhai District, Wenzhou City, Zhejiang Province (trusteeship-14) Applicant before: Wenzhou naima Trading Co.,Ltd. |
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