CN112492278A - Outdoor security self-cleaning camera - Google Patents
Outdoor security self-cleaning camera Download PDFInfo
- Publication number
- CN112492278A CN112492278A CN202011385742.2A CN202011385742A CN112492278A CN 112492278 A CN112492278 A CN 112492278A CN 202011385742 A CN202011385742 A CN 202011385742A CN 112492278 A CN112492278 A CN 112492278A
- Authority
- CN
- China
- Prior art keywords
- water
- water outlet
- base
- cavity
- fixedly connected
- 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.)
- Withdrawn
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 131
- 230000000903 blocking effect Effects 0.000 claims abstract description 19
- 230000001681 protective effect Effects 0.000 claims abstract description 10
- 239000008399 tap water Substances 0.000 claims description 10
- 235000020679 tap water Nutrition 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 9
- 229920000742 Cotton Polymers 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 9
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 description 7
- 238000007790 scraping Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Studio Devices (AREA)
Abstract
The invention discloses an outdoor security self-cleaning camera which comprises a base, wherein a camera body is fixedly arranged at the lower end of the base, a hemispherical protective cover is fixedly covered outside the camera body at the lower end of the base, a water storage cavity is formed in the base, a lower water outlet, a straight groove and a hydrodynamic cavity which are sequentially communicated are formed in the inner bottom wall of the water storage cavity, a retraction cavity is formed in the base below the hydrodynamic cavity, an upper water outlet is formed in the inner top wall of the water storage cavity and corresponds to the lower water outlet, the upper water outlet and the lower water outlet are both of a conical structure, an upper water blocking plug and a lower water blocking plug are respectively blocked in the upper water outlet and the lower water outlet, and a heat conduction linkage rod is vertically and fixedly connected with the upper water blocking plug and the lower water blocking plug. Has the advantages that: the invention can realize automatic cleaning, avoid the conditions of fuzzy shooting and camera shooting influence caused by dust adhered to the outer surface of the protective cover, and obviously improve the heat dissipation capability.
Description
Technical Field
The invention relates to the technical field of security protection, in particular to an outdoor security protection self-cleaning camera.
Background
The monitoring camera is a necessary tool in the field of outdoor security protection, and the monitoring camera with a fixed visual angle is more widely applied due to low price and simple and convenient installation, but in the process of using the monitoring camera for a long time, the outer surface of the monitoring camera is easy to adhere with a layer of dust, so that the camera shooting is very fuzzy, the monitoring quality is seriously influenced, and in addition, the heat generated by the work of the monitoring camera is added when the monitoring camera is used in hot days, so that the problem that the heat cannot be timely dissipated exists.
In order to solve the problems, an outdoor security self-cleaning camera is provided.
Disclosure of Invention
The invention aims to solve the problems in the background art and provides an outdoor security self-cleaning camera.
In order to achieve the purpose, the invention adopts the following technical scheme: an outdoor security self-cleaning camera comprises a base, wherein a camera body is fixedly mounted at the lower end of the base, a hemispherical protective cover is fixedly covered at the lower end of the base and outside the camera body, a water storage cavity is formed in the base, a lower water outlet, a straight groove and a hydrodynamic cavity which are sequentially communicated are formed in the inner bottom wall of the water storage cavity, a retractable cavity is formed in the base below the hydrodynamic cavity, an upper water outlet is formed in the inner top wall of the water storage cavity and corresponds to the lower water outlet, the upper water outlet and the lower water outlet are of conical structures, an upper water plug and a lower water plug are respectively plugged in the upper water outlet and the lower water outlet, the upper water plug and the lower water plug are vertically and fixedly connected with a heat-conducting linkage rod, the lower end of the heat-conducting linkage rod penetrates through the lower water plug and is fixedly connected with a memory spring, and the lower end of the memory spring is fixed on the inner wall of the straight groove, the hydraulic drive chamber is internally provided with a hydraulic wheel, the lower end of the hydraulic wheel is coaxially and fixedly connected with a rotating shaft, the lower end of the rotating shaft penetrates through the hydraulic chamber and extends into the retraction chamber, the rotating shaft is rotatably connected with an interlayer between the hydraulic chamber and the retraction chamber, the rotating shaft is coaxially and fixedly sleeved with a double-winding wheel in the retraction chamber, the inner peripheral wall of the hydraulic chamber is respectively communicated with two thin runners and two thick runners, the two thin runners and the two thick runners are symmetrically distributed in a crossed manner, the outer surface of the base corresponding to the retraction chamber is symmetrically provided with arc-shaped grooves, the arc-shaped grooves are internally and slidably connected with sliding blocks, a guide wheel is symmetrically and rotatably connected between the two arc-shaped grooves, the opposite sides of the two sliding blocks are fixedly connected with traction lines, one end of the traction line, far away from the sliding blocks, bypasses the guide wheel and is wound on the double-winding wheel, and, the one end that the slider was kept away from to the arc spring and the inner wall fixed connection of arc wall, two sliders are connected with jointly and scrape dirt spare, scrape dirt spare including being the semicircular, and densely covered the hard tube of aperture, the outer parcel of hard tube has clean cotton, the one end that hydrodynamic chamber was kept away from to the thin runner is passed through the hose and is connected with the hard tube, the upper end of base just has cup jointed the water pipe at the sealed fixed tap that has cup jointed in the corresponding position of last delivery port.
In the outdoor security and self-cleaning camera, one end of the thick flow channel, which is far away from the water moving cavity, is communicated with the flow guide pipe.
In the outdoor security self-cleaning camera, the upper end heating surface of the camera body is fixedly connected with a plurality of heat conducting rods, and the upper ends of the heat conducting rods hermetically penetrate through the base and are flush with the inner bottom surface of the water storage cavity.
In the outdoor security self-cleaning camera, the tap water pipe is provided with a master control valve.
In the outdoor security and self-cleaning camera, the upper end of the base is annularly provided with a water falling port, and the inner wall of the water falling port is fixedly connected with a blocking net.
In the outdoor security self-cleaning camera, the two traction wires are wound on the double-winding wheel along opposite directions respectively.
Compared with the prior art, this outdoor security protection automatically cleaning camera's advantage lies in:
1. according to the invention, impurities can be filtered to collect rainwater into the water storage cavity, so that water resources are saved, heat generated by the camera body due to work is transmitted into water through the heat conduction rod, when the telescopic temperature of the memory spring is reached, the upper water plug and the lower water plug can be jacked up through the heat conduction linkage rod, water with a certain temperature is discharged, tap water is automatically discharged, a heat dissipation medium is replaced, and the heat dissipation efficiency is improved;
2. when warm water is discharged, the water moving wheel can be flushed, the rotating shaft and the double winding wheel connected with the rotating shaft are driven to rotate, the two sliding blocks are driven to rotate along the same direction through the traction wire, the dust scraping piece rotates for nearly half a circle, and the automatic cleaning of the protective cover is realized;
3. the invention can realize automatic cleaning, avoid the conditions of fuzzy shooting and camera shooting influence caused by dust adhered to the outer surface of the protective cover, and obviously improve the heat dissipation capability.
Drawings
FIG. 1 is a structural perspective view of the front side of an outdoor security self-cleaning camera provided by the invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
fig. 3 is a schematic structural view of a water moving cavity, a thin runner and a thick runner of an outdoor security self-cleaning camera provided by the invention;
fig. 4 is a structural perspective view of an outdoor security self-cleaning camera in a top view.
In the figure: the camera comprises a base 1, a camera body 2, a protective cover 3, an arc-shaped groove 4, a sliding block 5, a hydrodynamic cavity 6, a retraction cavity 7, a rotating shaft 8, a water driving wheel 9, a straight groove 10, a lower water outlet 11, a memory spring 12, a lower water blocking plug 13, a duplex winding wheel 14, an arc-shaped spring 15, a guide wheel 16, a heat conduction linkage rod 17, an upper water blocking plug 18, an upper water outlet 19, a tap water pipe 20, a master control valve 21, a water outlet 22, a blocking net 23, a water storage cavity 24, a fine flow channel 25, a coarse flow channel 26, a heat conduction rod 27 and a dust scraping part 28.
Detailed Description
The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
Examples
Referring to fig. 1-4, an outdoor security self-cleaning camera comprises a base 1, a camera body 2 is fixedly installed at the lower end of the base 1, a hemispherical protective cover 3 is fixedly covered outside the camera body 2 at the lower end of the base 1, a water storage cavity 24 is formed in the base 1, a lower water outlet 11, a straight groove 10 and a hydrodynamic cavity 6 which are sequentially communicated are formed in the inner bottom wall of the water storage cavity 24, a retraction cavity 7 is formed below the hydrodynamic cavity 6 in the base 1, an upper water outlet 19 is formed in the inner top wall of the water storage cavity 24 and at the position corresponding to the lower water outlet 11, the upper water outlet 19 and the lower water outlet 11 are both in a conical structure, an upper water plug 18 and a lower water plug 13 are respectively plugged in the upper water outlet 19 and the lower water outlet 11, the upper water plug 18 and the lower water plug 13 are vertically and fixedly connected with a heat-conducting linkage rod 17 together, the lower end of the heat-conducting linkage rod 17 penetrates through the lower water plug, the device is the prior art, the lower end of a memory spring 12 is fixed on the inner wall of a straight groove 10, a hydrodynamic chamber 6 is internally provided with a hydrodynamic wheel 9, the lower end of the hydrodynamic wheel 9 is coaxially and fixedly connected with a rotating shaft 8, the lower end of the rotating shaft 8 penetrates through the hydrodynamic chamber 6 and extends into a retraction chamber 7, the rotating shaft 8 is rotatably connected with an interlayer between the hydrodynamic chamber 6 and the retraction chamber 7, the rotating shaft 8 in the retraction chamber 7 is coaxially and fixedly connected with a double-coiling wheel 14, the inner peripheral wall of the hydrodynamic chamber 6 is respectively communicated with two thin runners 25 and two thick runners 26, the two thin runners 25 and the two thick runners 26 are crossed and symmetrically distributed, an arc-shaped groove 4 is symmetrically arranged on the outer surface of the retraction chamber 7 corresponding to a base 1, a slide block 5 is slidably connected in the arc-shaped groove 4, a guide wheel 16 is symmetrically and rotatably connected between the two arc-shaped grooves 4, a traction line is fixedly connected on the opposite sides of the two slide blocks 5, one end of the traction, two equal fixedly connected with arc spring 15 of the relative one end of slider 5, the one end that slider 5 was kept away from to arc spring 15 and the inner wall fixed connection of arc wall 4, two slider 5 are connected with jointly and scrape dirt piece 28, scrape dirt piece 28 including being the semi-annular, and the hard tube of densely covered aperture, the outer parcel of hard tube has clean cotton, the aperture that water passes through on the hard tube is moist clean cotton, improve clean quality, the one end that hydrodynamic cavity 6 was kept away from to thin flow path 25 is passed through the hose and is connected with the hard tube, the upper end of base 1 just has cup jointed water pipe 20 at the sealed fixed of the corresponding position of last delivery port 19.
The end of the thick flow passage 26 far away from the water moving cavity 6 is communicated with a flow guide pipe. Water accessible honeycomb duct can water flowers and plants, avoids directly spilling, drenches the condition of pedestrian's clothing.
The upper end of the camera body 2 is fixedly connected with a plurality of heat conducting rods 27, and the upper ends of the heat conducting rods 27 penetrate through the base 1 in a sealing mode and are flush with the inner bottom surface of the water storage cavity 24. The heat generated by the camera body 2 during operation is conducted to the water in the water storage cavity 24 through the heat conducting rod 27.
The tap water pipe 20 is provided with a master control valve 21. When the invention needs to be checked, the main control valve 21 can be closed to prevent tap water from flowing out.
The upper end of the base 1 is annularly provided with a water falling port 22, and the inner wall of the water falling port 22 is fixedly connected with a blocking net 23. In rainy days, rainwater can enter the water storage cavity 24 after being filtered by the baffle net 23, so that water resources are saved.
The two traction wires are wound around the double-winding wheel 14 in opposite directions. The two traction wires synchronously drive the two sliding blocks 5 to rotate along the same direction.
The working principle of the invention is as follows:
before the protective cover 3 is automatically cleaned, the arc-shaped spring 15 is in a free state, the sliding block 5 is positioned at a position close to the inner wall of one side of the arc-shaped groove 4, the dust scraping piece 28 is positioned at a position which cannot influence the image pickup of the camera body 2 at the moment, the memory spring 12 is in a free state, and the upper water blocking plug 18 and the lower water blocking plug 13 block the upper water outlet 19 and the lower water outlet 11 respectively;
the water in the water storage cavity 24 originally has a certain liquid level, the source of the water can be rainwater entering the water storage cavity 24 after being filtered by the baffle net 23 during raining, the water can be tap water poured into the water storage cavity 24 during installation, heat generated by the camera body 2 due to work is conducted into the water in the water storage cavity 24 through the heat conduction rod 27, the heat in the water is conducted to the memory spring 12 through the heat conduction linkage rod 17 until reaching the expansion temperature of the memory spring 12, the memory spring 12 is a two-way memory spring, the lower water blocking plug 13 and the upper water blocking plug 18 are lifted up through the heat conduction linkage rod 17, gaps are formed between the upper water blocking plug 18 and the upper water outlet 19 as well as between the lower water blocking plug 13 and the lower water outlet 11, and the water originally absorbing a large amount of heat sequentially passes through the lower water outlet 11 and the straight groove 10 to enter the water storage cavity 6, the water flushing driving wheel 9 drives the rotating shaft 8 and the double-winding wheel 14 connected with the rotating shaft to rotate, water in the hydrodynamic cavity 6 enters the hard tube through a fine flow passage 25 (smaller proportion in unit time) and wets the cleaning cotton on the one hand, and flows out through the draft tube through a coarse flow passage 26 (larger proportion in unit time) on the other hand, the duplex winding wheel 14 winds two traction lines in a positive and reverse mode, the sliding block 5 is synchronously pulled to slide in the arc-shaped groove 4, the arc-shaped spring 15 is stretched, the dust scraping piece 28 which rotates for nearly half a circle scrapes dust adhered to the outer surface of the protective cover 3, meanwhile, tap water enters the water storage cavity 24 through the tap water pipe 20 and a gap between the upper water blocking plug 18 and the upper water outlet 19 so as to be cooled for use next time until the memory spring 12 retracts to be in a free state, the upper water blocking plug 18 and the lower water blocking plug 13 respectively block the upper water outlet 19 and the lower water outlet 11 again, and the sliding block 5 resets under the action.
The invention has the characteristics of cooling and automatic dust cleaning, and has more obvious advantages because the invention is especially suitable for hot areas.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The outdoor security self-cleaning camera comprises a base (1) and is characterized in that a camera body (2) is fixedly mounted at the lower end of the base (1), a hemispherical protective cover (3) is fixedly covered at the outer side of the camera body (2) at the lower end of the base (1), a water storage cavity (24) is formed in the base (1), a lower water outlet (11), a straight groove (10) and a hydrodynamic cavity (6) which are sequentially communicated are formed in the inner bottom wall of the water storage cavity (24), a retractable cavity (7) is formed in the base (1) below the hydrodynamic cavity (6), an upper water outlet (19) is formed in the inner top wall of the water storage cavity (24) and is formed in the corresponding position of the lower water outlet (11), the upper water outlet (19) and the lower water outlet (11) are of a conical structure, and an upper water plug (18) and a lower water plug (13) are respectively plugged in the upper water outlet (19) and the lower water outlet (11), go up water shutoff stopper (18) and the common vertical fixedly connected with heat conduction gangbar (17) of water shutoff stopper (13) down, the lower extreme of heat conduction gangbar (17) passes water shutoff stopper (13) and fixedly connected with memory spring (12) down, the lower extreme of memory spring (12) is fixed on the inner wall of straight flute (10), hydrodynamic chamber (6) embeds there is water wheel (9), the coaxial fixedly connected with pivot (8) of lower extreme of water wheel (9), the lower extreme of pivot (8) runs through hydrodynamic chamber (6) and extends to receive and release in chamber (7), and pivot (8) and hydrodynamic chamber (6) and receive and release the intermediate layer rotation between chamber (7) and be connected, be located receive and release chamber (7) pivot (8) coaxial fixed cover has been cup jointed pair reel (14), the internal perisporium of hydrodynamic chamber (6) communicates two thin runners (25) and two thick runners (26) respectively, and two thin runners (25) and two thick runners (26) are alternately and symmetrically distributed, arc wall (4) have been seted up in the outer surface symmetry that corresponds to receive and release chamber (7) in base (1), sliding connection has slider (5) in arc wall (4), two symmetrical rotation is connected with leading wheel (16) between arc wall (4), two equal fixedly connected with pull wire in the back of the body one side of slider (5) mutually, the one end that slider (5) were kept away from to the pull wire is walked around leading wheel (16) and is twined on pair rolling wheel (14), two equal fixedly connected with arc spring (15) in the relative one end of slider (5), the one end that slider (5) were kept away from in arc spring (15) and the inner wall fixed connection of arc wall (4), two sliders (5) are connected with jointly and scrape dirt piece (28), scrape dirt piece (28) including being semi-annular, And the hard pipe is densely distributed with small holes, cleaning cotton is wrapped outside the hard pipe, one end of the thin runner (25) far away from the water moving cavity (6) is connected with the hard pipe through a hose, and a tap water pipe (20) is fixedly sleeved at the upper end of the base (1) and at the corresponding position of the upper water outlet (19) in a sealing manner.
2. The outdoor security and self-cleaning camera head as claimed in claim 1, wherein a flow guide pipe is communicated with one end of the thick flow passage (26) far away from the water moving cavity (6).
3. An outdoor security self-cleaning camera head according to claim 1, wherein a plurality of heat conducting rods (27) are fixedly connected to the upper end heating surface of the camera head body (2), and the upper ends of the heat conducting rods (27) hermetically penetrate through the base (1) and are flush with the inner bottom surface of the water storage cavity (24).
4. An outdoor security self-cleaning camera head according to claim 1, wherein a master control valve (21) is installed on the tap water pipe (20).
5. An outdoor security self-cleaning camera according to claim 1, wherein a water falling port (22) is annularly formed at the upper end of the base (1), and a blocking net (23) is fixedly connected to the inner wall of the water falling port (22).
6. An outdoor security self-cleaning camera head according to claim 1, wherein the two pulling wires are respectively wound on the double-winding wheel (14) in opposite directions.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011385742.2A CN112492278A (en) | 2020-12-01 | 2020-12-01 | Outdoor security self-cleaning camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011385742.2A CN112492278A (en) | 2020-12-01 | 2020-12-01 | Outdoor security self-cleaning camera |
Publications (1)
Publication Number | Publication Date |
---|---|
CN112492278A true CN112492278A (en) | 2021-03-12 |
Family
ID=74938586
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202011385742.2A Withdrawn CN112492278A (en) | 2020-12-01 | 2020-12-01 | Outdoor security self-cleaning camera |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN112492278A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113259555A (en) * | 2021-05-06 | 2021-08-13 | 曹国清 | Traffic management is with spherical camera of automatically cleaning |
CN113971890A (en) * | 2021-10-25 | 2022-01-25 | 深圳市鑫光道科技有限公司 | Intelligent traffic lamp with quick buckling and detaching device |
-
2020
- 2020-12-01 CN CN202011385742.2A patent/CN112492278A/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113259555A (en) * | 2021-05-06 | 2021-08-13 | 曹国清 | Traffic management is with spherical camera of automatically cleaning |
CN113259555B (en) * | 2021-05-06 | 2022-07-08 | 中铁四局集团电气化工程有限公司 | Traffic management is with spherical camera of automatically cleaning |
CN113971890A (en) * | 2021-10-25 | 2022-01-25 | 深圳市鑫光道科技有限公司 | Intelligent traffic lamp with quick buckling and detaching device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN112492278A (en) | Outdoor security self-cleaning camera | |
CN206055435U (en) | Carry the street lamp of cleaning mechanism | |
CN109297173B (en) | Air conditioner refrigeration plate anti-freezing device with automatic extrusion and drainage functions | |
CN108660992B (en) | Passageway cleaning device for park | |
CN108915067A (en) | A kind of hydraulic engineering water pipe | |
CN113432459B (en) | Large heat exchanger with cleaning function | |
CN116886038A (en) | Photovoltaic power generation device with photovoltaic panel cleaning function | |
CN110692401B (en) | Ecological environmental protection green house irrigation system | |
CN206832119U (en) | Condenser cleaning brush automatic on-line cleaning device | |
CN214537923U (en) | Slope protection angle measuring device for hydraulic engineering | |
CN114618208A (en) | Heating power pipeline filter equipment | |
CN210887528U (en) | Anti-blocking pipe connector | |
CN114128530A (en) | Green building with environmental protection and energy saving functions | |
CN207284815U (en) | A kind of pond circulation water sewage collection system | |
CN217110634U (en) | Air cooler with protection component | |
CN220928130U (en) | Rainfall drainage structure | |
CN217901274U (en) | Waste water detection uses simple and easy sampling device | |
CN205557814U (en) | Novel sewer dredge device | |
CN213253213U (en) | Anti-blocking descaling device for floor heating pipeline | |
CN218890189U (en) | Graphite heat exchanger with descaling structure | |
CN220110465U (en) | Sedimentation tank | |
CN218119904U (en) | Fan coil with dust filtering function | |
CN219919899U (en) | Irrigation equipment for hydraulic engineering | |
CN113014770B (en) | Surveillance camera head with defrosting and dedusting functions | |
CN218239458U (en) | Flood control engineering uses hydrology information acquisition device |
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 | ||
WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210312 |
|
WW01 | Invention patent application withdrawn after publication |