CN112058723A - Advertising media is with bill-board along with wind-force self-cleaning device - Google Patents
Advertising media is with bill-board along with wind-force self-cleaning device Download PDFInfo
- Publication number
- CN112058723A CN112058723A CN202010881473.2A CN202010881473A CN112058723A CN 112058723 A CN112058723 A CN 112058723A CN 202010881473 A CN202010881473 A CN 202010881473A CN 112058723 A CN112058723 A CN 112058723A
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- China
- Prior art keywords
- water storage
- cleaning device
- advertising media
- push plate
- shell
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- 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.)
- Withdrawn
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 53
- 239000007921 spray Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 7
- 241000883990 Flabellum Species 0.000 abstract 2
- 238000005406 washing Methods 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/024—Cleaning by means of spray elements moving over the surface to be cleaned
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/02—Methods or installations for obtaining or collecting drinking water or tap water from rain-water
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Cleaning In General (AREA)
Abstract
The invention provides a wind-powered automatic cleaning device for an advertising billboard for advertising media, wherein a disc is attached to the outer surface of a roller, the roller is rotatably mounted inside an adjusting frame, the top end of the adjusting frame is movably connected with a support, the adjusting frame is movably connected with a connecting rod, the support is rotatably mounted on the inner upper wall of a shell, and the opposite surfaces of the connecting rod are movably connected with sponge brush heads. When strong wind weather, blow support body and flabellum through external wind speed and rotate, it is rotatory to drive the axis of rotation when support body and flabellum rotate, the awl ratch of axis of rotation bottom drives the disc and rotates, laminate with the gyro wheel, based on the eccentric wheel principle, thereby the alignment jig that drives the gyro wheel outside moves at the bottom horizontal hunting of support, the sponge brush head that the alignment jig drives the connecting rod connection of bottom removes cleanly around the bill-board on the surface, the realization is to the washing of bill-board equidirectional not, need not the manual work and regularly cleans.
Description
Technical Field
The invention belongs to the technical field of billboard cleaning, and particularly relates to a wind-powered automatic cleaning device for a billboard for advertising media.
Background
The billboard is one of the most main transmission modes of advertising media due to strong visual impact and rich and colorful expression forms, but because the billboard is exposed outdoors for a long time, a large amount of dust or dirt is accumulated on the surface of the billboard to influence the impression effect, and therefore the billboard needs to be cleaned regularly to be simply treated.
When the billboard is regularly cleaned, the operation steps are complex, manual surface cleaning work is required, the cleaning efficiency is low, in addition, the billboard cannot be cleaned in different directions, a large amount of water resources are easily wasted in the cleaning process, therefore, in view of the above, research and improvement are carried out on the existing structure and deficiency, and the billboard automatic cleaning device for the advertising media along with wind power is provided, so that the purpose of higher practical value is achieved.
Disclosure of Invention
In order to solve the technical problems, the invention provides an automatic cleaning device of an advertising board for advertising media along with wind power, which is achieved by the following specific technical means:
an automatic billboard cleaning device for advertising media along with wind power comprises frame bodies, wherein fan blades are fixedly mounted between the adjacent frame bodies, a rotating shaft is fixedly mounted at the center of the inner portion of each frame body, bevel gear rods are meshed at the bottom ends of the rotating shafts, the rotating shafts penetrate through the upper surface of a shell, discs are meshed at the outer ends of the adjacent bevel gear rods, the discs are attached to the outer surfaces of rollers, the rollers are rotatably mounted inside an adjusting frame, a support is movably connected to the top end of the adjusting frame, a connecting rod is movably connected to the top end of the adjusting frame, the support is rotatably mounted on the upper wall of the inner portion of the shell, sponge brush heads are movably connected to opposite surfaces of the connecting rod, corresponding spray pipes are fixedly mounted above the sponge brush heads and on the lower surface of the shell, water storage bags are fixedly connected to the upper surfaces of the spray pipes, push plates are arranged on the surfaces of the left, the improved water storage device is characterized in that the push plate is slidably mounted in the fixing seat, the outer end of the push plate is movably connected to the inner side surface of the adjusting frame, a variable resistor is arranged at the joint of the push plate and the fixing seat, a metal sheet corresponding to the variable resistor is arranged on the lower surface of the variable resistor and on the top of the push plate, a water delivery pipe is fixedly connected to the upper surface of the water storage bag, the top of the water delivery pipe is fixedly connected to the inside of the water storage cavity, a piston plate is slidably mounted inside the water storage cavity, a magnet is arranged on the top of the piston plate, a corresponding coil is arranged above the magnet and inside the support body, a through hole is formed in the joint of the water storage cavity and the shell, and a corresponding water baffle plate is fixedly mounted on the outer side.
Furthermore, the water delivery pipe is of an inverted U-shaped structure, the through holes are obliquely arranged, one-way valves are arranged at the joints of the through holes and the water storage cavity, and rainwater flows into the water storage cavity through the through holes for collection after being blocked by the water baffle plate when flowing down along the shell in rainy days by utilizing the oblique design of the through holes, so that the rainwater can be conveniently cleaned in the subsequent process.
Further, the magnetic pole of the magnetic field that coil bottom produced is the same with the magnetic pole of opposite face magnet, electric connection between coil and the variable resistance, the top fixedly connected with spring of piston plate adjusts the position of sheetmetal and variable resistance through the push pedal is inside to be removed at the fixing base, further adjusts the resistance value that the variable resistance links into the circuit to adjust the electric current in the coil of establishing ties with the variable resistance, until the adsorption affinity that magnetic field produced is greater than the pulling force of spring, thereby guarantee the magnetic field adsorption magnet that the coil produced, drive the piston plate and shift up.
Furthermore, the outer side of the support is fixedly provided with a corresponding limiting column on the inner wall of the shell, a telescopic rod is arranged at the joint of the sponge brush head and the shell, and the sponge brush head is guaranteed to horizontally move on the billboard through the design of the telescopic rod.
Furthermore, the left end and the right end of the bevel gear rod are meshed with the joints of the disc and the rotating shaft through bevel gears, and the bevel gear rods are symmetrically arranged on two sides with the center of the rotating shaft as the reference.
Furthermore, the disc and the roller are correspondingly arranged left and right, the diameter of the disc is larger than that of the roller, the disc is used for driving the roller to rotate, and the adjusting frame on the outer surface of the roller is driven to swing left and right based on the principle of an eccentric wheel.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, in windy weather, the frame body and the fan blades are blown to rotate by external wind speed, the rotating shaft is driven to rotate when the frame body and the fan blades rotate, the bevel gear rod at the bottom end of the rotating shaft drives the disc to rotate, the disc is attached to the roller wheel while rotating, so that a distance difference is formed by the attachment of the disc and the roller wheel, based on the principle of an eccentric wheel, the adjusting frame outside the roller wheel is driven to swing left and right at the bottom end of the support, and the adjusting frame drives the sponge brush head connected with the connecting rod at the bottom end to move and clean the front and back surfaces of the billboard, so that the billboard is cleaned in different directions, the manual periodical cleaning is not required, and the cleaning efficiency is improved.
2. In the rain weather, after rainwater is blocked by the water baffle plate when flowing down along the shell, the rainwater flows into the water storage cavity through the through holes to be collected, the adjusting frame drives the push plate to move in the fixed seat when swinging, the positions of the metal sheet and the variable resistor are adjusted by the movement of the push plate in the fixed seat, the resistance value of the variable resistor connected with the circuit is further adjusted, so that the current in the coil connected with the variable resistor in series is adjusted until the adsorption force generated by the magnetic field is greater than the tensile force of the spring, the magnetic field generated by the coil is ensured to adsorb the magnet, the piston plate is driven to move upwards, so as to generate suction, based on the siphon principle, the internally collected rainwater enters the water storage bag through the water pipe, the water storage bag is extruded at the next time of the push plate and is sprayed to the surface of the advertising board through the spray pipe to be contacted with the sponge brush head for, energy conservation and environmental protection, and water resource saving.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is a sectional view of a portion of the construction of a reservoir chamber of the invention;
FIG. 3 is a schematic view of a portion of the interior of the housing of the present invention;
FIG. 4 is a schematic view of the kinematic structure of FIG. 3 of the present invention;
fig. 5 is a partial structural schematic view of the fixing base of the present invention.
In the figure: 1. a frame body; 2. a fan blade; 3. a rotating shaft; 4. a housing; 5. a bevel gear rod; 6. a disc; 7. a roller; 8. an adjusting bracket; 9. a support; 10. a connecting rod; 11. a sponge brush head; 12. a shower pipe; 13. a water storage bag; 14. pushing the plate; 1401. a metal sheet; 1402. a variable resistor; 15. a fixed seat; 16. a water delivery pipe; 17. a water storage cavity; 18. a piston plate; 1801. a magnet; 1802. a coil; 19. through holes; 20. a water baffle.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the invention provides a wind-powered automatic cleaning device for an advertising billboard for an advertising medium, which is shown in the attached drawings 1 to 5: comprises a frame body 1, fan blades 2 are fixedly arranged between adjacent frame bodies 1, a rotating shaft 3 is fixedly arranged at the center of the inner part of each frame body 1, the bottom end of each rotating shaft 3 is meshed with a bevel gear rod 5, the rotating shaft 3 penetrates through the upper surface of a shell 4, the outer ends of the adjacent bevel gear rods 5 are respectively meshed with a disc 6, the left end and the right end of each bevel gear rod 5 and the disc 6 and the connecting part of the rotating shaft 3 are mutually meshed through bevel gears, the bevel gear rods 5 are symmetrically arranged on two sides based on the center of the rotating shaft 3, the discs 6 are attached to the outer surface of a roller 7, the discs 6 and the rollers 7 are correspondingly arranged on the left side and the right side, the diameter of each disc 6 is larger than that of the roller 7, the roller 7 is driven to rotate by the disc 6, based on the principle of an eccentric wheel, so that an adjusting frame 8 on the outer surface of the roller, and the swing joint of alignment jig 8 has connecting rod 10, and support 9 rotates and installs the inside upper wall at casing 4, and the outside of support 9 has corresponding spacing post at the inner wall fixed mounting of casing 4, and the equal swing joint of opposite face of connecting rod 10 has sponge brush head 11, and the junction of sponge brush head 11 and casing 4 is provided with the telescopic link, guarantees through the design of telescopic link that sponge brush head 11 controls horizontal migration on the bill-board.
A corresponding spray pipe 12 is fixedly arranged above the sponge brush head 11 and on the lower surface of the shell 4, the upper surface of the spray pipe 12 is fixedly connected with a water storage bag 13, the left and right side surfaces of the water storage bag 13 are respectively provided with a push plate 14, the push plate 14 is slidably arranged in a fixed seat 15, the outer end of the push plate 14 is movably connected with the inner side surface of the adjusting frame 8, the joint of the push plate 14 and the fixed seat 15 is provided with a variable resistor 1402, the lower surface of the variable resistor 1402 and the top end of the push plate 14 are internally provided with a metal sheet 1401 corresponding to the variable resistor 1402, the upper surface of the water storage bag 13 is fixedly connected with a water pipe 16, the water pipe 16 is of an inverted U-shaped structure, the top end of the water pipe 16 is fixedly connected in the water storage cavity 17, the inside of the water storage cavity 17 is slidably provided with a piston plate 18, the upper part of the, a coil 1802 is arranged above the magnet 1801 and inside the frame 1, the magnetic pole of the magnetic field generated at the bottom of the coil 1802 is the same as the magnetic pole of the magnet 1801 opposite to the surface, the coil 1802 is electrically connected with the variable resistor 1402, the positions of the metal sheet 1401 and the variable resistor 1402 are adjusted by moving the push plate 14 inside the fixed seat 15, the resistance value of the variable resistor 1402 connected to a circuit is further adjusted, so that the current in the coil 1802 connected in series with the variable resistor 1402 is adjusted until the adsorption force generated by the magnetic field is greater than the pulling force of the spring, so as to ensure that the magnetic field generated by the coil 1802 adsorbs the magnet 1801, drive the piston plate 18 to move upwards, the connection part of the water storage cavity 17 and the shell 4 is provided with a through hole 19, the through hole 19 is arranged obliquely, the connection part of the through hole 19 and the water storage cavity 17 is provided with a one-way valve, when rainwater flows down along the shell 4, then flows into the water storage cavity 17 through the through hole 19 for collection, thereby facilitating the subsequent cleaning work, and a corresponding water baffle plate 20 is fixedly arranged on the outer side of the through hole 19 and the outer surface of the frame body 1.
The specific use mode and function of the embodiment are as follows:
in the invention, the device is arranged on the outer surface of the advertising board, the advertising board is positioned in the middle of the sponge brush head 11, when in rainy weather, rainwater flows down along the shell 4, the water baffle 20 is blocked, then the rainwater flows into the water storage cavity 17 through the through hole 19 to be collected, when in windy weather, the frame body 1 and the fan blade 2 are blown to rotate by external wind speed, when the frame body 1 and the fan blade 2 rotate, the rotating shaft 3 is driven to rotate, the conical tooth rod 5 at the bottom end of the rotating shaft 3 drives the disc 6 to rotate, the disc 6 is attached to the roller 7 while rotating, thus distance difference is formed by the attachment between the disc 6 and the roller 7, based on the eccentric wheel principle, the adjusting frame 8 outside the roller 7 is driven to swing left and right at the bottom end of the bracket 9, the adjusting frame 8 drives the sponge brush head 11 connected with the connecting rod 10 at the bottom end to move and, meanwhile, the adjusting frame 8 drives the push plate 14 to move in the fixing seat 15 while swinging, the positions of the metal sheet 1401 and the variable resistor 1402 are adjusted by the movement of the push plate 14 in the fixing seat 15, the resistance value of a circuit connected with the variable resistor 1402 is further adjusted, so that the current in the coil 1802 connected in series with the variable resistor 1402 is adjusted until the adsorption force generated by the magnetic field is greater than the pulling force of the spring, thereby ensuring that the magnetic field generated by the coil 1802 adsorbs the magnet 1801 to drive the piston plate 18 to move upwards, thereby generating the suction force, based on the siphon principle, internally collected rainwater enters the water storage bag 13 through the water pipe 16, next time extrudes the water storage bag 13 on the push plate 14, is sprayed to the surface of the advertising board through the spray pipe 12 and is contacted with the sponge brush head 11 to perform cleaning operation, the whole structure is cleaned through rainwater, energy conservation and environmental protection are achieved, water resources are saved, and meanwhile, manual periodical, the billboard cleaning device has the advantages that the billboard can be cleaned in different directions, and the cleaning efficiency is improved.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.
Claims (6)
1. The utility model provides an automatic belt cleaning device of bill-board along with wind for advertising media, includes support body (1), its characterized in that: the fan blades (2) are fixedly mounted between the adjacent frame bodies (1), the rotating shaft (3) is fixedly mounted at the center of the inner portion of each frame body (1), the bottom end of each rotating shaft (3) is meshed with a conical toothed rod (5), the rotating shaft (3) penetrates through the upper surface of each shell (4), the outer ends of the adjacent conical toothed rods (5) are meshed with discs (6), the discs (6) are attached to the outer surfaces of rollers (7), the rollers (7) are rotatably mounted inside adjusting frames (8), the top ends of the adjusting frames (8) are movably connected with supports (9), the adjusting frames (8) are movably connected with connecting rods (10), the supports (9) are rotatably mounted on the upper inner wall of each shell (4), opposite surfaces of the connecting rods (10) are movably connected with sponge brush heads (11), spray pipes (12) are correspondingly fixedly mounted above the sponge brush heads (11) and on the lower surface of each shell (4), the upper surface of the spray pipe (12) is fixedly connected with a water storage bag (13), the left and right side surfaces of the water storage bag (13) are respectively provided with a push plate (14), the push plate (14) is slidably mounted in a fixing seat (15), the outer end of the push plate (14) is movably connected with the inner side surface of the adjusting frame (8), the joint of the push plate (14) and the fixing seat (15) is provided with a variable resistor (1402), the lower surface of the variable resistor (1402) is provided with a metal sheet (1401) corresponding to the push plate (14) in the top end of the push plate (14), the upper surface of the water storage bag (13) is fixedly connected with a water pipe (16), the top end of the water pipe (16) is fixedly connected in a water storage cavity (17), a piston plate (18) is slidably mounted in the water storage cavity (17), and a magnet (1801) is arranged in the top end of the piston plate (18), the coil (1802) is arranged above the magnet (1801) and inside the frame body (1), a through hole (19) is formed in the joint of the water storage cavity (17) and the frame body (4), and a corresponding water baffle (20) is fixedly arranged on the outer side of the through hole (19) and the outer surface of the frame body (1).
2. The automatic wind-powered cleaning device for advertising media billboard of claim 1, wherein: the water conveying pipe (16) is of an inverted U-shaped structure, the through holes (19) are obliquely arranged, and one-way valves are arranged at the joints of the through holes (19) and the water storage cavities (17).
3. The automatic wind-powered cleaning device for advertising media billboard of claim 1, wherein: the magnetic poles of the magnetic field generated at the bottom of the coil (1802) are the same as the magnetic poles of the magnets (1801) on the opposite surface, the coil (1802) is electrically connected with the variable resistor (1402), and a spring is fixedly connected above the piston plate (18).
4. The automatic wind-powered cleaning device for advertising media billboard of claim 1, wherein: the outer side of the support (9) is fixedly provided with a corresponding limiting column on the inner wall of the shell (4), and a telescopic rod is arranged at the joint of the sponge brush head (11) and the shell (4).
5. The automatic wind-powered cleaning device for advertising media billboard of claim 1, wherein: the left end and the right end of the bevel gear rod (5) are meshed with the joints of the disc (6) and the rotating shaft (3) through bevel gears, and the bevel gear rod (5) is symmetrically arranged on two sides with the center of the rotating shaft (3) as the reference.
6. The automatic wind-powered cleaning device for advertising media billboard of claim 1, wherein: the disc (6) and the roller (7) are arranged in a left-right corresponding mode, and the diameter of the disc (6) is larger than that of the roller (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010881473.2A CN112058723A (en) | 2020-08-27 | 2020-08-27 | Advertising media is with bill-board along with wind-force self-cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010881473.2A CN112058723A (en) | 2020-08-27 | 2020-08-27 | Advertising media is with bill-board along with wind-force self-cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112058723A true CN112058723A (en) | 2020-12-11 |
Family
ID=73659572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010881473.2A Withdrawn CN112058723A (en) | 2020-08-27 | 2020-08-27 | Advertising media is with bill-board along with wind-force self-cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112058723A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112570328A (en) * | 2020-12-22 | 2021-03-30 | 深圳市忆好网络科技有限公司 | Energy-saving cleaning device for assembling liquid crystal display television display screen |
| CN112843954A (en) * | 2020-12-29 | 2021-05-28 | 翟亚玲 | City is administered with spraying dust device along with wind-force automatically regulated |
| CN112858286A (en) * | 2021-01-08 | 2021-05-28 | 深圳市宝测达科技有限公司 | Equipment for detecting content of each component of composite gas in atmospheric environment |
| CN113611230A (en) * | 2021-08-07 | 2021-11-05 | 张艳 | Wind energy environmental protection bill-board of wind energy industry |
| CN113689809A (en) * | 2021-09-08 | 2021-11-23 | 承德石油高等专科学校 | A publicity column for student's management |
| CN114294057A (en) * | 2021-12-22 | 2022-04-08 | 中铁十六局集团第五工程有限公司 | Quick pump drainage device of silt accumulation body in tunnel |
-
2020
- 2020-08-27 CN CN202010881473.2A patent/CN112058723A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112570328A (en) * | 2020-12-22 | 2021-03-30 | 深圳市忆好网络科技有限公司 | Energy-saving cleaning device for assembling liquid crystal display television display screen |
| CN112843954A (en) * | 2020-12-29 | 2021-05-28 | 翟亚玲 | City is administered with spraying dust device along with wind-force automatically regulated |
| CN112858286A (en) * | 2021-01-08 | 2021-05-28 | 深圳市宝测达科技有限公司 | Equipment for detecting content of each component of composite gas in atmospheric environment |
| CN113611230A (en) * | 2021-08-07 | 2021-11-05 | 张艳 | Wind energy environmental protection bill-board of wind energy industry |
| CN113611230B (en) * | 2021-08-07 | 2022-12-20 | 福建昊瀚标识工程有限公司 | Wind energy environmental protection bill-board of wind energy industry |
| CN113689809A (en) * | 2021-09-08 | 2021-11-23 | 承德石油高等专科学校 | A publicity column for student's management |
| CN114294057A (en) * | 2021-12-22 | 2022-04-08 | 中铁十六局集团第五工程有限公司 | Quick pump drainage device of silt accumulation body in tunnel |
| CN114294057B (en) * | 2021-12-22 | 2023-08-22 | 中铁十六局集团第五工程有限公司 | Quick pumping device for sediment accumulation in tunnel |
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201211 |
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| WW01 | Invention patent application withdrawn after publication |