CN211402362U - Domestic sewage detection device - Google Patents

Domestic sewage detection device Download PDF

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Publication number
CN211402362U
CN211402362U CN201922482450.XU CN201922482450U CN211402362U CN 211402362 U CN211402362 U CN 211402362U CN 201922482450 U CN201922482450 U CN 201922482450U CN 211402362 U CN211402362 U CN 211402362U
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China
Prior art keywords
detection
sensor
box
domestic sewage
lifting mechanism
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CN201922482450.XU
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Chinese (zh)
Inventor
李莉
张征云
卞少伟
宋兵魁
赵晶磊
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Tianjin Academy of Ecological and Environmental Sciences
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Tianjin Academy of Environmental Sciences
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Abstract

The utility model provides a domestic sewage detection device, which relates to the technical field of sewage treatment and comprises a detection box, a lifting mechanism and a detection sensor; a cleaning spray head is arranged above the side wall of the box body of the detection box, and a water spray opening of the cleaning spray head faces the inside of the detection box; the lifting mechanism is arranged on the detection box; the detection sensor is arranged on the lifting mechanism and is positioned inside the detection box; the lifting mechanism is configured to drive the detection sensor to lift so that the detection sensor is close to or far away from the cleaning spray head. The utility model discloses it glues remaining material when having a small amount of former time to detect on the sensor to the domestic sewage through handling among the prior art to have alleviated when detecting through the sensor, the detection index precision that causes is low, the not accurate technical problem of detection data.

Description

Domestic sewage detection device
Technical Field
The utility model belongs to the technical field of sewage treatment technique and specifically relates to a domestic sewage detection device is related to.
Background
Domestic sewage is wastewater discharged in daily life of residents and mainly comes from residential buildings and public buildings, such as houses, institutions, schools, hospitals, shops, public places, industrial enterprise toilets and the like. The pollutants contained in the domestic sewage are mainly organic matters (such as protein, carbohydrate, fat, urea, ammonia nitrogen and the like) and a large amount of pathogenic microorganisms (such as parasitic ova, enteroinfectious viruses and the like). Organic matters existing in domestic sewage are extremely unstable and are easy to decay to generate stink; bacteria and pathogens propagate in large quantities by taking organic matters in the domestic sewage as nutrition, which can cause epidemic spread of infectious diseases, so the domestic sewage needs to be treated before being discharged, is detected after being treated, and is supplied after reaching the standard. The existing device for detecting domestic sewage generally detects water quality through a sensor, but a small amount of substances remained in the previous detection are adhered to the sensor in the detection process, and although the substances are small or even trace, the problems of low detection index precision and inaccurate detection data can be caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a domestic sewage detection device to be stained with remaining material when a small amount of former time detects on the sensor when alleviating among the prior art and detecting the domestic sewage through the sensor, the detection index precision that causes is low, detect the inaccurate technical problem of data.
In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:
the embodiment of the utility model provides a domestic sewage detection device, which comprises a detection box, a lifting mechanism and a detection sensor;
a cleaning spray head is arranged above the side wall of the box body of the detection box, and a water spray opening of the cleaning spray head faces the interior of the detection box;
the lifting mechanism is arranged on the detection box; the detection sensor is arranged on the lifting mechanism and is positioned inside the detection box; the lifting mechanism is configured to drive the detection sensor to lift so as to enable the detection sensor to be close to or far away from the cleaning spray head.
In an alternative embodiment, a horizontal partition plate is arranged inside the detection box, the horizontal partition plate divides the internal space of the detection box into an upper space and a lower space, and an opening is formed in the horizontal partition plate;
the cleaning spray head is positioned in the upper space;
the lifting mechanism is configured to drive the detection sensor to lift through the opening, so that the detection sensor is located in the upper space or the lower space.
In an optional embodiment, the lifting mechanism is disposed at the top of the detection box, the cleaning nozzles include a first cleaning nozzle and a second cleaning nozzle, and the first cleaning nozzle and the second cleaning nozzle are respectively mounted on two side walls of the detection box facing each other.
In an alternative embodiment, the lifting mechanism comprises a drive part and a lifting rod; the driving part is installed on the outer wall of the box body of the detection box, one end of the lifting rod is connected to the driving part, the detection sensor is installed at the other end of the lifting rod, and the driving part is configured to drive the lifting rod to lift.
In an optional embodiment, a vent pipe is further installed on a side wall of the box body of the detection box, and one end of the vent pipe, which is located inside the detection box, is provided with a gas orifice.
In an alternative embodiment, the gas injection hole has a plurality of which surround the cleaning showerhead.
In an optional embodiment, the domestic sewage detection device further comprises a stirring mechanism; the stirring mechanism comprises a motor, a stirring shaft and a stirring blade, wherein the stirring shaft penetrates through the wall of the box body of the detection box and is positioned below the cleaning sprayer, the stirring blade is arranged on the stirring shaft, one end of the stirring shaft, which is positioned outside the detection box, is connected with an output shaft of the motor, and the motor is configured to drive the stirring shaft to rotate.
In an alternative embodiment, the domestic sewage detection apparatus further comprises a filtering assembly; the filter assembly comprises a water outlet pipe, a water suction pump and a filter, one end of the water outlet pipe is connected to the position below the side wall of the box body of the detection box and communicated with the inner space of the detection box, the filter is arranged at the other end of the water outlet pipe, and the water suction pump is arranged on the water outlet pipe and located on the detection box and the position between the filters.
In an alternative embodiment, the domestic sewage detection apparatus further comprises a leg and a drain opening; the supporting legs are connected to the bottom of the detection box, the water outlet is formed in the bottom wall of the box body of the detection box, a water drainage pipe is connected to the water outlet, and a water drainage valve is arranged on the water drainage pipe.
In alternative embodiments, the detection sensor comprises at least one of a temperature sensor, a conductivity sensor, a pH sensor, a dissolved oxygen sensor, a mercury sensor, an arsenic sensor, a chromium sensor, and a lead sensor.
The embodiment of the utility model provides a can be to reaching following beneficial effect:
the embodiment of the utility model provides a domestic sewage detection device, including detection case, elevating system and detection sensor. A cleaning spray head is arranged above the side wall of the box body of the detection box, and a water spray opening of the cleaning spray head faces the inside of the detection box; the lifting mechanism is arranged on the detection box; the detection sensor is arranged on the lifting mechanism and is positioned inside the detection box; the lifting mechanism is configured to drive the detection sensor to lift so that the detection sensor is close to or far away from the cleaning spray head.
In the embodiment of the utility model, before the sewage after the processing is introduced into the detection box, the detection sensor is cleaned by spraying water through the cleaning nozzle, the sewage generated after the cleaning is discharged after the cleaning is finished is cleaned, the treated domestic sewage needing to be detected is introduced into the detection box, and then the detection sensor is driven by the lifting mechanism to extend into the treated domestic sewage for detection; the cleaning spray head is arranged at the upper part of the side wall of the box body of the detection box, so that the cleaning spray head is prevented from being polluted after sewage which reaches the standard is not treated is introduced into the detection box, and the cleaning spray head can be ensured to effectively clean the detection sensor; the operation of cleaning the cleaning nozzle can also be performed after each detection is finished, the lifting mechanism drives the detection sensor to ascend to a position close to the cleaning nozzle to clean after the detection is finished, and the detection is directly performed during the next detection, so that the detection time is saved.
The embodiment of the utility model provides an improved the accuracy that detects the sensor and detect the data to the domestic sewage through handling, it has remained the material when gluing on the sensor when detecting to the domestic sewage through handling through the sensor among the prior art to have alleviated, the detection index precision that causes is low, the not accurate technical problem of detection data.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Figure 1 is the utility model discloses domestic sewage detection device's overall structure schematic diagram is provided.
Icon: 1-detection box; 100-a headspace; 200-a lower space; 11-a horizontal partition; 111-opening; 2-a lifting mechanism; 21-a drive section; 22-a lifting rod; 3-a detection sensor; 301-detection board; 302-control panel; 4-cleaning the spray head; 41-a first cleaning spray head; 42-a second cleaning spray head; 5-a breather pipe; 6-a stirring mechanism; 61-a motor; 62-a stirring shaft; 63-stirring blades; 7-a filter assembly; 71-a water outlet pipe; 72-water pump; 73-a filter; 8-a support leg; 9-a water outlet; 91-a drain pipe; 92-a drain valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "middle part", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
This embodiment provides a domestic sewage detection device, referring to fig. 1, this domestic sewage detection device includes detection case 1, elevating system 2 and detection sensor 3. A cleaning spray head 4 is arranged above the side wall of the box body of the detection box 1, and a water spray opening of the cleaning spray head 4 faces the interior of the detection box 1; the lifting mechanism 2 is arranged on the detection box 1; the detection sensor 3 is arranged on the lifting mechanism 2, and the detection sensor 3 is positioned in the detection box 1; the lifting mechanism 2 is configured to be able to lift the detection sensor 3 so as to bring the detection sensor 3 close to or away from the cleaning head 4.
As shown in fig. 1, the detection sensor 3 needs to be used in combination with a detection plate 301 and a control panel 302, the detection sensor 3 is connected to the detection plate 301, and the control panel 302 is electrically or signal-connected to the detection plate 301, in this embodiment, the detection plate 301 is installed on the lifting mechanism 2 along with the detection sensor 3, and the control panel 302 is installed on the outer wall of the detection box 1; the detection sensor 3 includes at least one of a temperature sensor, a conductivity sensor, a pH sensor, a dissolved oxygen sensor, a mercury sensor, an arsenic sensor, a chromium sensor, and a lead sensor; the detection plate 301 is connected to the lifting mechanism 2 following the detection sensor 3.
In this embodiment, before the treated sewage is introduced into the detection box 1, the detection sensor 3 may be subjected to water spray cleaning by the cleaning nozzle 4, the sewage generated after cleaning is discharged after cleaning is completed, the treated domestic sewage to be detected is introduced into the detection box 1, and then the detection sensor 3 is driven by the lifting mechanism 2 to extend into the treated domestic sewage for detection, more specifically, when in use, the water inlet end of the cleaning nozzle 4 may be connected with a clean water pipeline to provide clean water for cleaning the cleaning nozzle 4; the cleaning spray head 4 is arranged at the upper part of the side wall of the box body of the detection box 1, so that the cleaning spray head 4 is prevented from being polluted after sewage which reaches the standard is untreated is introduced into the detection box 1, and the cleaning spray head 4 can be ensured to effectively clean the detection sensor 3; the operation of cleaning the cleaning nozzle 4 can be performed after each detection, the lifting mechanism 2 drives the detection sensor 3 to ascend to a position close to the cleaning nozzle 4 for cleaning after the detection is finished, and the detection is directly performed during the next detection, so that the detection time is saved.
This embodiment has improved detection sensor 3 and has detected the accuracy that obtains data to the domestic sewage through handling, has alleviated among the prior art and has glued on the sensor when detecting the domestic sewage through handling a small amount of remaining material when detecting, the detection index precision that causes is low, the not accurate technical problem of detection data.
With continued reference to fig. 1, in an alternative embodiment of the present embodiment, a horizontal partition 11 is provided inside the detection box 1, the horizontal partition 11 divides the internal space of the detection box into an upper space 100 and a lower space 200, and an opening 111 is opened in the horizontal partition 11. The cleaning nozzle 4 is located in the upper space 100; the lifting mechanism 2 is configured to lift the detection sensor 3 through the opening 111, so that the detection sensor 3 is located in the upper space 100 or the lower space 200. In the alternative embodiment, the cleaning nozzle 4 and the lower space 200 can be separated by the horizontal partition plate 11, so as to prevent the water in the lower space 200 from contacting the cleaning nozzle 4 and ensure that the cleaning nozzle 4 can effectively clean the detection sensor 3; meanwhile, the detection sensor 3 can be lifted after the detection is finished, and the service life of the detection sensor 3 is prolonged.
On the basis of any of the above embodiments, optionally, as shown in fig. 1, the lifting mechanism 2 is disposed on the top of the detection box 1, the cleaning nozzle 4 includes a first cleaning nozzle 41 and a second cleaning nozzle 42, and the first cleaning nozzle 41 and the second cleaning nozzle 42 are respectively mounted on two side walls of the detection box 1 facing each other. Through setting up two washing shower nozzles 4, and make two washing shower nozzles 4 face each other to can carry out two side washings to detecting sensor 3, guarantee that detecting sensor 3 is effectively washd.
In addition, in an alternative embodiment of the present embodiment, the lifting mechanism 2 includes a driving portion 21 and a lifting rod 22; the driving unit 21 is attached to the outer wall of the detection box 1, one end of the lifting rod 22 is connected to the driving unit 21, the detection sensor 3 is attached to the other end of the lifting rod 22, and the driving unit 21 is disposed to be able to drive the lifting rod 22 to move up and down. The specific structural form of the driving part 21 is various, for example, but not limited to, as shown in fig. 1, the driving part 21 includes a cylinder and a telescopic rod, the cylinder is connected to the outer side wall of the detection box 1, one end of the telescopic rod is connected to the inside of the cylinder, the other end of the telescopic rod is connected to a mounting plate, one end of the lifting rod 22 is connected to the mounting plate, wherein, the cylinder may be provided with one or two or more, and the ends of the telescopic rods connected to the cylinders, which are far away from the cylinder, are all connected to the mounting plate; alternatively, the cylinder may be an electric cylinder, or the like, or the driving unit 21 may be formed as a vertically disposed electric slide structure, or the like, as long as the lifting function can be achieved.
In addition, with reference to fig. 1, in an alternative embodiment of the present embodiment, a ventilation pipe 5 is further installed on the side wall of the detection box 1, and an air vent is opened at one end of the ventilation pipe 5 located inside the detection box 1. In this optional embodiment, can be after accomplishing the washing to detecting sensor 3, through letting in gas to the inside of breather pipe 5 to drying detecting sensor 3, it is short with the last measuring time interval to avoid next measuring, has the water stain to cause on the detecting sensor 3 to detect insensitivity and influence the testing result. In order to improve the drying efficiency, it is preferable that the plurality of air injection holes surround the cleaning shower 4.
In addition, with continued reference to fig. 1, in an alternative embodiment of the present embodiment, the domestic sewage detection apparatus further comprises a stirring mechanism 6; stirring mechanism 6 includes motor 61, stirring shaft 62 and stirring vane 63, and stirring shaft 62 passes through the box body wall of detection case 1, and stirring shaft 62 is located the below of washing shower nozzle 4, and stirring vane 63 is installed in stirring shaft 62, and the one end that is located the outside of detection case 1 of stirring shaft 62 is connected with the output shaft of motor 61, and motor 61 is configured as being able to drive stirring shaft 62 and rotate. Wherein, the motor 61 can be installed on the bracket or the ground or the outer side wall of the box body of the detection box 1. Through setting up agitating unit, can make the water sample intensive mixing of waiting of the inside with detection case 1, improve the reliability of testing result.
With continued reference to fig. 1, on the basis of the above optional embodiment, further optionally, the domestic sewage detection apparatus further comprises a filtering assembly 7; the filtering assembly 7 comprises a water outlet pipe 71, a water suction pump 72 and a filter 73, wherein one end of the water outlet pipe 71 is connected to the lower part of the side wall of the box body of the detection box 1 and is communicated with the inner space of the detection box 1, the filter 73 is arranged at the other end of the water outlet pipe 71, and the water suction pump 72 is arranged on the water outlet pipe 71 and is positioned between the detection box 1 and the filter 73. Therefore, the water sample can be filtered before being discharged.
In addition, referring to fig. 1, in an alternative embodiment of the present embodiment, the domestic sewage detection apparatus further includes a leg 8 and a drain opening 9; the support leg 8 is connected to the bottom of the detection box 1, the water outlet 9 is opened on the bottom wall of the detection box 1, the water outlet 9 is connected with a water discharge pipe 91, and the water discharge pipe 91 is provided with a water discharge valve 92.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. The domestic sewage detection device is characterized by comprising a detection box (1), a lifting mechanism (2) and a detection sensor (3);
a cleaning spray head (4) is arranged above the side wall of the box body of the detection box (1), and a water spray opening of the cleaning spray head (4) faces the interior of the detection box (1);
the lifting mechanism (2) is arranged on the detection box (1); the detection sensor (3) is arranged on the lifting mechanism (2), and the detection sensor (3) is positioned in the detection box (1); the lifting mechanism (2) is configured to drive the detection sensor (3) to lift so that the detection sensor (3) is close to or far away from the cleaning spray head (4).
2. The domestic sewage detection apparatus according to claim 1, wherein a horizontal partition plate (11) is provided inside the detection tank (1), the horizontal partition plate (11) divides the internal space of the detection tank into an upper space (100) and a lower space (200), and an opening (111) is opened in the horizontal partition plate (11);
the cleaning spray head (4) is positioned in the upper space (100);
the lifting mechanism (2) is configured to drive the detection sensor (3) to lift through the opening (111) so that the detection sensor (3) is located in the upper space (100) or the lower space (200).
3. The domestic sewage detection apparatus according to claim 1 or 2, wherein the lifting mechanism (2) is disposed at the top of the detection box (1), the cleaning nozzle (4) comprises a first cleaning nozzle (41) and a second cleaning nozzle (42), and the first cleaning nozzle (41) and the second cleaning nozzle (42) are respectively installed on two sidewalls of the detection box (1) facing each other.
4. The domestic sewage detection apparatus according to claim 1, wherein said lifting mechanism (2) comprises a driving portion (21) and a lifting lever (22); the driving part (21) is installed on the outer wall of the box body of the detection box (1), one end of the lifting rod (22) is connected to the driving part (21), the detection sensor (3) is installed at the other end of the lifting rod (22), and the driving part (21) is configured to be capable of driving the lifting rod (22) to lift.
5. The domestic sewage detection device according to claim 1, wherein a vent pipe (5) is further installed on the side wall of the detection box (1), and one end of the vent pipe (5) located inside the detection box (1) is provided with an air jet hole.
6. The domestic sewage detection apparatus according to claim 5, wherein said air injection hole has a plurality thereof, and a plurality of said air injection holes surround said cleaning shower head (4).
7. The domestic sewage detection apparatus according to claim 1, further comprising a stirring mechanism (6); stirring mechanism (6) include motor (61), (mixing) shaft (62) and stirring vane (63), (mixing) shaft (62) pass the box body wall of detection case (1) and are located wash the below of shower nozzle (4), stirring vane (63) install in (mixing) shaft (62), the (mixing) shaft (62) be located the outside one end of detection case (1) with the output shaft of motor (61), motor (61) are configured into and can drive (mixing) shaft (62) rotate.
8. The domestic sewage detection apparatus according to claim 7, wherein said domestic sewage detection apparatus further comprises a filter assembly (7); the filter assembly (7) comprises an outlet pipe (71), a water suction pump (72) and a filter (73), one end of the outlet pipe (71) is connected to the lower part of the side wall of the box body of the detection box (1) and communicated with the inner space of the detection box (1), the filter (73) is arranged at the other end of the outlet pipe (71), and the water suction pump (72) is arranged on the outlet pipe (71) and located on the detection box (1) and between the filters (73).
9. The domestic sewage detection apparatus according to claim 1, wherein said domestic sewage detection apparatus further comprises a leg (8) and a drain (9); landing leg (8) connect in the bottom of detection case (1), outlet (9) are seted up in the box diapire of detection case (1) be connected with drain pipe (91) on outlet (9) be provided with drain valve (92) on drain pipe (91).
10. The domestic sewage detection apparatus according to claim 1, wherein said detection sensor (3) comprises at least one of a temperature sensor, a conductivity sensor, a pH sensor, a dissolved oxygen sensor, a mercury sensor, an arsenic sensor, a chromium sensor and a lead sensor.
CN201922482450.XU 2019-12-31 2019-12-31 Domestic sewage detection device Active CN211402362U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922482450.XU CN211402362U (en) 2019-12-31 2019-12-31 Domestic sewage detection device

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Application Number Priority Date Filing Date Title
CN201922482450.XU CN211402362U (en) 2019-12-31 2019-12-31 Domestic sewage detection device

Publications (1)

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CN211402362U true CN211402362U (en) 2020-09-01

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113125667A (en) * 2021-05-13 2021-07-16 湖南碧霄环境科技有限公司 Water quality detection case with self-cleaning function
CN113655201A (en) * 2021-08-12 2021-11-16 上海景观实业发展有限公司 Wetland soil protection system
WO2022155984A1 (en) * 2021-01-22 2022-07-28 江苏南大五维电子科技有限公司 Water quality monitoring device capable of being cleaned automatically

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022155984A1 (en) * 2021-01-22 2022-07-28 江苏南大五维电子科技有限公司 Water quality monitoring device capable of being cleaned automatically
CN113125667A (en) * 2021-05-13 2021-07-16 湖南碧霄环境科技有限公司 Water quality detection case with self-cleaning function
CN113125667B (en) * 2021-05-13 2023-04-25 湖南碧霄环境科技有限公司 Water quality testing case with self-cleaning function
CN113655201A (en) * 2021-08-12 2021-11-16 上海景观实业发展有限公司 Wetland soil protection system
CN113655201B (en) * 2021-08-12 2024-03-26 上海景观实业发展有限公司 Wetland soil protection system

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Effective date of registration: 20220121

Address after: 300191 No. 17, rehabilitation Road, Tianjin, Nankai District

Patentee after: Tianjin Academy of ecological and Environmental Sciences (Tianjin Academy of environmental planning, Tianjin low carbon development research center)

Address before: No.17, Fukang Road, Nankai District, Tianjin

Patentee before: TIANJIN ACADEMY OF ENVIRONMENTAL SCIENCES