CN112665681A - Water level detection device for water conservancy and hydropower - Google Patents
Water level detection device for water conservancy and hydropower Download PDFInfo
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- CN112665681A CN112665681A CN202011476928.9A CN202011476928A CN112665681A CN 112665681 A CN112665681 A CN 112665681A CN 202011476928 A CN202011476928 A CN 202011476928A CN 112665681 A CN112665681 A CN 112665681A
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Abstract
The invention discloses a water level detection device for water conservancy and hydropower, which comprises: reading device, cleaning device and installation device, reading device is used for detecting the height of water level along with the water level goes up and down, cleaning device is used for self-cleaning reading device's surface, and need not the circular telegram, the energy saving, installation device is used for installing reading device stable in aqueous, and can adapt to the multiple condition under water, and this water conservancy water and electricity water level detection device has solved the problem that current water conservancy water and electricity water level detection device long-term use device reading can be polluted by the water and lead to the reading difficulty, and the device simple installation need not manual regulation after the installation, need not the circular telegram and can accomplish permanent self-cleaning, has practiced thrift the energy, makes things convenient for people to read the water level more.
Description
Technical Field
The invention relates to the technical field of water level detection devices, in particular to a water level detection device for water conservancy and hydropower.
Background
In the process of maintaining the normal operation of the hydraulic and hydroelectric engineering, the water level parameter is an important monitoring index which can reflect the water storage capacity, the flood peak regulating capacity and the like of the hydraulic and hydroelectric engineering. The water level detection device is widely used for measuring and controlling the static and dynamic liquid levels of various liquids in water plants, oil refineries, chemical plants, glass plants, sewage treatment plants, water supply systems of high buildings, reservoirs, riverways and the like for water supply pools, distribution pools, water treatment pools, wells, water tanks, oil wells, oil tanks and oil pools.
The sighting rod of current water conservancy water and electricity water level detection device water level soaks in aqueous for a long time, and after long-time the use, the device surface can be polluted, leads to being difficult to see the condition of water level reading clearly, influences people's use to need regularly clean water level monitoring device's surface, increased work load and working cost. Therefore, a water level detection device for water conservancy and hydropower is provided.
Disclosure of Invention
The invention aims to provide a water level detection device for water conservancy and hydropower, which does not need a power supply to automatically clean the outer surface of the device for a long time and is convenient for reading, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a water level detection device for water conservancy and hydropower, comprising: reading device, cleaning device and installation device, reading device is used for detecting the height of water level along with the water level goes up and down, cleaning device is used for self-cleaning reading device's surface, and need not the circular telegram, the energy saving, installation device is used for installing reading device stable in aqueous, and can adapt to the multiple condition under water, this water conservancy water and electricity water level detection device, and the device simple installation need not artifical the regulation after the installation, need not the circular telegram and can accomplish permanent self-cleaning, has practiced thrift the energy, makes things convenient for people to read the water level more.
Preferably, the mounting device comprises a mounting plate, a nut, an inserting block and a knocking block, a plurality of threaded holes are formed in the mounting plate, the nut is in threaded connection with the threaded holes, a plurality of inserting holes are formed in the mounting plate, a sliding groove is formed in the inserting hole, the inserting block is in sliding connection with the inserting hole, a limiting block is fixedly connected to the side face of the inserting block and is in sliding connection with the sliding groove, the bottom face of the knocking block is fixedly connected with the top face of the inserting block, the reading device is connected with the top face of the mounting plate, the reading device can be stably mounted in water and can adapt to various underwater conditions.
Preferably, the reading device includes first sleeve, second sleeve, floats board and registration equipment, the top surface fixed connection of first telescopic bottom surface and mounting panel, the telescopic top surface of second and the bottom surface fixed connection who floats the board, the second sleeve cup joints with first sleeve slip, first telescopic top surface is equipped with first spacing ring, the telescopic bottom surface of second is equipped with the second spacing ring, registration equipment is used for reading the registration of water level, registration equipment is connected with the top surface of floating the board, the height of the adaptation water level of being convenient for.
Preferably, the number indicating equipment comprises a transparent cylinder, a first rotating shaft, a clockwork spring, a rotating cylinder and a tape measure, wherein the transparent cylinder is made of transparent materials, the bottom surface of the transparent cylinder is fixedly connected with the top surface of a floating plate, a first limiting groove is formed in the floating plate, the first rotating shaft is fixedly connected with the inner wall of the transparent cylinder, one end of the clockwork spring is fixedly connected with the first rotating shaft, the other end of the clockwork spring is fixedly connected with the rotating cylinder, one end of the tape measure is fixedly connected with the rotating cylinder and wound on the rotating cylinder, and the other end of the tape measure penetrates through the top surface of the first limiting groove, the first sleeve, the second sleeve and the mounting plate, so that the height of the.
Preferably, the cleaning device comprises a driving fan, a second rotating shaft, a device box, a first bevel gear, a second bevel gear, a third rotating shaft, a connecting block, a first limiting column, a driving disk and a second limiting column, wherein the driving fan is fixedly connected with the second rotating shaft, a device groove is formed in the device box, the second rotating shaft is rotatably connected with the device box, the first bevel gear is rotatably connected with the device groove and fixedly connected with one end of the second rotating shaft, which is far away from the driving fan, the second bevel gear is rotatably connected with the device groove and coaxially and fixedly connected with the third rotating shaft, the connecting block is rotatably connected with the first bevel gear and the second bevel gear, the third rotating shaft is rotatably connected with the device groove, the first limiting column is fixedly connected with the bottom surface of the device box, the top surface of the driving disk is fixedly connected with the bottom surface of the third rotating shaft, and the bottom surface of the second limiting column is fixedly connected with the top surface of the transparent cylinder, the bottom surface of the first limiting column is provided with a second limiting groove, the top surface of the second limiting column is provided with a third limiting groove, the top surface and the bottom surface of the driving disc are respectively provided with two fourth limiting rings which are rotatably connected with the second limiting groove and the third limiting groove, the side surface of the driving disc is provided with a plurality of groups of cleaning equipment for cleaning the outer surface of the transparent cylinder, and the cleaning equipment is driven by wind power, so that energy is saved and cost is reduced.
Preferably, the cleaning device comprises a brush rod and a brush head, the brush rod is fixedly connected with the side surface of the driving disc, the brush head is fixedly connected with one side of the brush rod and is in sliding connection with the outer wall of the transparent cylinder, and the outer surface of the transparent cylinder is continuously rotated and cleaned.
Preferably, be equipped with two limiting baffle that are convenient for spacing to the tape on the rotary drum, carry on spacingly to the tape, produce the skew when preventing the tape rolling.
Preferably, the first sleeve, the second sleeve and the mounting plate are made of anti-corrosion materials, so that corrosion damage caused by long-term immersion under water is prevented.
Preferably, a plurality of groups of third sleeves are connected between the first sleeve and the second sleeve in a sliding mode, the telescopic distance is longer due to the multi-layer sleeving, and the detected water level range is larger.
Compared with the prior art, the invention has the beneficial effects that:
the water level detection device for water conservancy and hydropower solves the problem that reading is difficult due to the fact that the reading of the existing water level detection device for water conservancy and hydropower is polluted by water bodies after long-term use, the reading device is arranged, the height of the water level can be conveniently detected along with the rise and fall of the water level, the cleaning device is arranged, the surface of the reading device can be conveniently and automatically cleaned without electrifying, energy is saved, the mounting device is arranged, the reading device is stably mounted in water and can adapt to various underwater conditions, the device is simple and convenient to mount, manual adjustment is not needed after mounting, permanent automatic cleaning can be completed without electrifying, energy is saved, and people can read the water level more conveniently.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the mounting device of the present invention;
FIG. 3 is a cross-sectional view of a reading device of the present invention;
FIG. 4 is an enlarged view of area A of FIG. 3;
FIG. 5 is an enlarged view of area B of FIG. 4;
FIG. 6 is a cross-sectional view of a cleaning device of the present invention;
FIG. 7 is an enlarged view of area C of FIG. 6;
fig. 8 is an enlarged view of the region D in fig. 6.
In the figure: 1-a reading device; 2-a cleaning device; 3-mounting the device; 4-mounting a plate; 5-a nut; 6-a plug-in block; 7-knocking block; 8-a threaded hole; 9-a plug hole; 10-a chute; 11-a limiting block; 12-a first sleeve; 13-a second sleeve; 14-floating plates; 15-a number display device; 16-a first stop collar; 17-a second stop collar; 18-a transparent cylinder; 19-a first shaft; 20-a clockwork spring; 21-a rotating drum; 22-tape measure; 23-a first limit groove; 24-driving a fan; 25-a second rotating shaft; 26-a device cartridge; 27-a first bevel gear; 28-a second bevel gear; 29-a third shaft; 30-connecting blocks; 31-a first restraint post; 32-a drive disc; 33-a second limit post; 34-a device slot; 35-a second limiting groove; 36-a third limiting groove; 37-a fourth stop collar; 38-a cleaning device; 39-brush bar; 40-a brush head; 41-limiting baffle plates; 42-third sleeve.
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. 1-8, the present invention provides a technical solution: a water level detection device for water conservancy and hydropower, comprising: reading device 1, cleaning device 2 and installation device 3, reading device 1 is used for detecting the height of water level along with the water level goes up and down, cleaning device 2 is used for the surface of self-cleaning reading device 1, and need not the circular telegram, the energy saving, installation device 3 is used for installing reading device 1 stable in aqueous, and can adapt to the multiple condition under water, and the device simple installation need not artifical the regulation after the installation, need not to circular telegram and can accomplish permanent self-cleaning, has practiced thrift the energy, makes things convenient for people to read the water level more.
Installation device 3 includes mounting panel 4, nut 5, grafting piece 6 and strikes piece 7, a plurality of screw holes 8 have been seted up on the mounting panel 4, nut 5 and screw hole 8 threaded connection, a plurality of spliced eye 9 have been seted up on the mounting panel 4, spout 10 has been seted up in the spliced eye 9, grafting piece 6 and spliced eye 9 sliding connection, the side fixedly connected with and the 10 sliding connection's of spout stopper 11 of grafting piece 6, strike the bottom surface of piece 7 and the top surface fixed connection of grafting piece 6, reading device 1 is connected with the top surface of mounting panel 4, and when submarine for earth, can pass grafting hole 9 through knocking piece 7 and insert earth through knocking piece 6, can accomplish fixedly, when submarine hard objects such as cement, stone, the accessible is twisted nut 5 and is made mounting panel 4 fixed with the submarine.
The reading apparatus 1 comprises a first sleeve 12, a second sleeve 13, a floating plate 14 and a number indicating device 15, the bottom surface of the first sleeve 12 is fixedly connected with the top surface of the mounting plate 4, the top surface of the second sleeve 13 is fixedly connected with the bottom surface of the floating plate 14, the second sleeve 13 is sleeved with the first sleeve 12 in a sliding manner, the top surface of the first sleeve 12 is provided with a first limit ring 16, the bottom surface of the second sleeve 13 is provided with a second limit ring 17, the number indicating device 15 is used for reading the number of the water level, indicating equipment 15 is connected with the top surface that floats board 14, and first sleeve 12 is connected at the bottom with mounting panel 4, floats board 14 and floats at the surface of water and can drive indicating equipment 15 and detect the submarine water level reading to the surface of water, and it can stretch out and draw back to slide to cup joint between first sleeve 12 and the second sleeve 13, has guaranteed that the surface of water goes up and down all usable, and first spacing ring 16 and second spacing ring 17 prevent that first sleeve 12 and second sleeve 13 from breaking away from.
The number indicating equipment 15 comprises a transparent cylinder 18, a first rotating shaft 19, a clockwork spring 20, a rotating cylinder 21 and a tape 22, wherein the transparent cylinder 18 is made of transparent materials, the bottom surface of the transparent cylinder 18 is fixedly connected with the top surface of a floating plate 14, a first limiting groove 23 is formed in the floating plate 14, the first rotating shaft 19 is fixedly connected with the inner wall of the transparent cylinder 18, one end of the clockwork spring 20 is fixedly connected with the first rotating shaft 19, the other end of the clockwork spring is fixedly connected with the rotating cylinder 21, one end of the tape 22 is fixedly connected with the rotating cylinder 21 and wound on the rotating cylinder 21, the other end of the tape passes through the first limiting groove 23, the first sleeve 12 and the second sleeve 13 and is fixedly connected with the top surface of the mounting plate 4, the tape is similar to a measuring tape, the starting end of the tape 22 is pulled by the mounting plate 4 at the bottom, the reading of the tail end of the tape 22 can be observed through the transparent cylinder 18, the, the initial scale of the tape 22 is therefore the reading after fitting and is not 0 and the clockwork spring 20 will always keep the tape 22 under tension.
The cleaning device 2 comprises a driving fan 24, a second rotating shaft 25, a device box 26, a first bevel gear 27, a second bevel gear 28, a third rotating shaft 29, a connecting block 30, a first limiting column 31, a driving disk 32 and a second limiting column 33, wherein the driving fan 24 is fixedly connected with the second rotating shaft 25, a device groove 34 is formed in the device box 26, the second rotating shaft 25 is rotatably connected with the device box 26, the first bevel gear 27 is rotatably connected with the device groove 34 and fixedly connected with one end of the second rotating shaft 25 far away from the driving fan 24, the second bevel gear 28 is rotatably connected with the device groove 34 and coaxially and fixedly connected with the third rotating shaft 29, the connecting block 30 is rotatably connected with both the first bevel gear 27 and the second bevel gear 28, the third rotating shaft 29 is rotatably connected with the device groove 34, the first limiting column 31 is fixedly connected with the bottom surface of the device box 26, the top surface of the driving disk 32 is fixedly connected with the bottom surface of the third rotating shaft 29, the bottom surface of the second limit column 33 is fixedly connected with the top surface of the transparent cylinder 18, the bottom surface of the first limit column 31 is provided with a second limit groove 35, the top surface of the second limit column 33 is provided with a third limit groove 36, the top surface and the bottom surface of the driving disc 32 are respectively provided with two fourth limit rings 37 which are rotatably connected with the second limit groove 35 and the third limit groove 36, the side surface of the driving disc 32 is provided with a plurality of groups of cleaning devices 38 for cleaning the outer surface of the transparent cylinder 18, because the wind power on the water surface is large, the natural wind blows the driving fan 24 to rotate, drives the second rotating shaft 25 to rotate, thereby driving the first bevel gear 27 to rotate, the first bevel gear 27 drives the second bevel gear 28 to rotate, drives the third rotating shaft 29 to rotate, drives the driving disc 32 to rotate, and drives the cleaning devices 38 to rotate and clean the outer surface of the transparent cylinder 18, because the directions of the, the connection block 30 and the device case 26 ensure that the second rotating shaft 25 can horizontally rotate, and ensure that the driving fan 24 can receive the surrounding wind.
The cleaning device 38 comprises a brush rod 39 and a brush head 40, the brush rod 39 is fixedly connected with the side surface of the driving disk 32, the brush head 40 is fixedly connected with one side of the brush rod 39 and is slidably connected with the outer wall of the transparent cylinder 18, and the driving disk 32 drives the brush rod 39 to rotate, so that the brush head 40 is driven to rotate to clean the outer surface of the transparent cylinder 18.
The rotary drum 21 is provided with two limiting baffle plates 41 which are convenient for limiting the tape 22, the tape 22 is limited, and deviation is prevented when the tape 22 is rolled.
The first sleeve 12, the second sleeve 13 and the mounting plate 4 are made of anti-corrosion materials, and corrosion damage caused by long-term immersion under water is prevented.
And a plurality of groups of third sleeves 42 are connected between the first sleeve 12 and the second sleeve 13 in a sliding manner, the telescopic distance is longer due to multi-layer sleeve connection, and the detected water level range is larger.
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. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
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. A water level detection device for water conservancy and hydropower, characterized by comprising:
the reading device (1), the reading device (1) is used for detecting the height of the water level along with the rise and fall of the water level;
the cleaning device (2) is used for automatically cleaning the surface of the reading device (1), and power does not need to be supplied, so that energy is saved;
the mounting device (3) is used for stably mounting the reading device (1) in water, and can adapt to various underwater conditions.
2. The water level detection device for water conservancy and hydropower of claim 1, which is characterized in that: the mounting device (3) comprises a mounting plate (4), a nut (5), an inserting block (6) and a knocking block (7), a plurality of threaded holes (8) are formed in the mounting plate (4), the nut (5) is in threaded connection with the threaded holes (8), a plurality of inserting holes (9) are formed in the mounting plate (4), sliding grooves (10) are formed in the inserting holes (9), the inserting block (6) is in sliding connection with the inserting holes (9), side faces of the inserting block (6) are fixedly connected with limiting blocks (11) in sliding connection with the sliding grooves (10), the bottom face of the knocking block (7) is fixedly connected with the top face of the inserting block (6), and the reading device (1) is connected with the top face of the mounting plate (4).
3. The water level detection device for water conservancy and hydropower of claim 2, which is characterized in that: reading device (1) includes first sleeve (12), second sleeve (13), floats board (14) and registration equipment (15), the bottom surface of first sleeve (12) and the top surface fixed connection of mounting panel (4), the top surface of second sleeve (13) and the bottom surface fixed connection who floats board (14), second sleeve (13) cup joint with first sleeve (12) slip, the top surface of first sleeve (12) is equipped with first spacing ring (16), the bottom surface of second sleeve (13) is equipped with second spacing ring (17), registration equipment (15) are used for reading the registration of water level, registration equipment (15) are connected with the top surface of floating board (14).
4. The water level detection device for water conservancy and hydropower of claim 3, which is characterized in that: the number indicating equipment (15) comprises a transparent barrel (18), a first rotating shaft (19), a clockwork spring (20), a rotating barrel (21) and a tape (22), wherein the transparent barrel (18) is made of transparent materials, the bottom surface of the transparent barrel is fixedly connected with the top surface of a floating plate (14), a first limiting groove (23) is formed in the floating plate (14), the first rotating shaft (19) is fixedly connected with the inner wall of the transparent barrel (18), one end of the clockwork spring (20) is fixedly connected with the first rotating shaft (19), the other end of the clockwork spring is fixedly connected with the rotating barrel (21), one end of the tape (22) is fixedly connected with the rotating barrel (21) and is wound on the rotating barrel (21), and the other end of the metering device penetrates through the first limiting groove (23), the first sleeve (12), the second sleeve (13) and the top surface of the mounting plate (4).
5. The water level detection device for water conservancy and hydropower of claim 4, which is characterized in that: the cleaning device (2) comprises a driving fan (24), a second rotating shaft (25), a device box (26), a first bevel gear (27), a second bevel gear (28), a third rotating shaft (29), a connecting block (30), a first limiting column (31), a driving disc (32) and a second limiting column (33), wherein the driving fan (24) is fixedly connected with the second rotating shaft (25), a device groove (34) is formed in the device box (26), the second rotating shaft (25) is rotatably connected with the device box (26), the first bevel gear (27) is rotatably connected with the device groove (34) and fixedly connected with one end, far away from the driving fan (24), of the second rotating shaft (25), the second bevel gear (28) is rotatably connected with the device groove (34) and coaxially and fixedly connected with the third rotating shaft (29), and the connecting block (30) is rotatably connected with the first bevel gear (27) and the second bevel gear (28), third pivot (29) and device groove (34) rotate to be connected, the bottom surface fixed connection of first spacing post (31) and device box (26), the top surface of driving-disc (32) and the bottom surface fixed connection of third pivot (29), the bottom surface of second spacing post (33) and the top surface fixed connection of a transparent section of thick bamboo (18), second spacing groove (35) have been seted up to the bottom surface of first spacing post (31), third spacing groove (36) have been seted up to the top surface of second spacing post (33), two fourth spacing rings (37) of rotating the connection with second spacing groove (35) and third spacing groove (36) are installed respectively to the top surface and the bottom surface of driving-disc (32), the side of driving-disc (32) is equipped with multiunit and is used for cleaning the cleaning equipment (38) of the surface of a transparent section of thick bamboo (18).
6. The water level detection device for water conservancy and hydropower of claim 5, which is characterized in that: the cleaning equipment (38) comprises a brush rod (39) and a brush head (40), the brush rod (39) is fixedly connected with the side surface of the driving disc (32), and the brush head (40) is fixedly connected with one side of the brush rod (39) and is in sliding connection with the outer wall of the transparent cylinder (18).
7. The water level detection device for water conservancy and hydropower of claim 4, which is characterized in that: the rotary drum (21) is provided with two limiting baffles (41) which are convenient for limiting the tape measure (22).
8. The water level detection device for water conservancy and hydropower of claim 3, which is characterized in that: the first sleeve (12), the second sleeve (13) and the mounting plate (4) are all made of anti-corrosion materials.
9. The water level detection device for water conservancy and hydropower of claim 3, which is characterized in that: a plurality of groups of third sleeves (42) are connected between the first sleeve (12) and the second sleeve (13) in a sliding way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011476928.9A CN112665681B (en) | 2020-12-15 | 2020-12-15 | Water conservancy water and electricity water level detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011476928.9A CN112665681B (en) | 2020-12-15 | 2020-12-15 | Water conservancy water and electricity water level detection device |
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| Publication Number | Publication Date |
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| CN112665681A true CN112665681A (en) | 2021-04-16 |
| CN112665681B CN112665681B (en) | 2023-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011476928.9A Active CN112665681B (en) | 2020-12-15 | 2020-12-15 | Water conservancy water and electricity water level detection device |
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| US20190162578A1 (en) * | 2017-11-28 | 2019-05-30 | International Business Machines Corporation | Self-cleaning liquid level sensor |
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| CN211651760U (en) * | 2020-08-03 | 2020-10-09 | 严凯 | Water level measuring device for hydraulic and hydroelectric engineering |
| CN211783753U (en) * | 2020-02-29 | 2020-10-27 | 杨锡胜 | Water level monitoring equipment that water conservancy construction used |
| CN211954341U (en) * | 2020-05-25 | 2020-11-17 | 卢临瀚 | Water conservancy water and electricity water level sighting rod |
| CN212022868U (en) * | 2020-04-27 | 2020-11-27 | 洛阳市天成车辆配件有限公司 | Self-cleaning instrument panel for vehicle |
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- 2020-12-15 CN CN202011476928.9A patent/CN112665681B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190162578A1 (en) * | 2017-11-28 | 2019-05-30 | International Business Machines Corporation | Self-cleaning liquid level sensor |
| CN108722919A (en) * | 2018-03-12 | 2018-11-02 | 宁波中惠信息技术有限公司 | A kind of automatically cleaning instrument |
| CN108814612A (en) * | 2018-05-11 | 2018-11-16 | 中国人民解放军陆军军医大学第附属医院 | A kind of automatic cleaning apparatus of measuring instrument |
| CN211783753U (en) * | 2020-02-29 | 2020-10-27 | 杨锡胜 | Water level monitoring equipment that water conservancy construction used |
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| CN212022868U (en) * | 2020-04-27 | 2020-11-27 | 洛阳市天成车辆配件有限公司 | Self-cleaning instrument panel for vehicle |
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| CN112665681B (en) | 2023-10-10 |
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Effective date of registration: 20230907 Address after: 330000 traffic science and technology building, 249 Fuhe North Road, Donghu District, Nanchang City, Jiangxi Province Applicant after: Jiangxi port and Waterway Construction Investment Group Co.,Ltd. Address before: Chongqing Water Conservancy and electric power vocational and technical college, No. 801, east section of Changzhou Avenue, Yongchuan District, Chongqing 402100 Applicant before: Bai Heping |
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