CN113405859A - Automatic sampling equipment for detecting water environment with controllable submergence depth - Google Patents
Automatic sampling equipment for detecting water environment with controllable submergence depth Download PDFInfo
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- CN113405859A CN113405859A CN202110957418.1A CN202110957418A CN113405859A CN 113405859 A CN113405859 A CN 113405859A CN 202110957418 A CN202110957418 A CN 202110957418A CN 113405859 A CN113405859 A CN 113405859A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
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Abstract
The invention provides automatic sampling equipment for detecting a water environment with controllable submergence depth, which can automatically collect a sample according to setting; comprises a cylinder body; a liquid inlet is arranged on the cylinder body; the balance group is arranged on the cylinder and used for carrying out overall balance adjustment after reaching a specified position; the sampling group is arranged in the cylinder and is used for enabling the sample to enter the cylinder; the detection group is arranged on the cylinder body and used for detecting the position depth of the liquid inlet; the control group is arranged in the cylinder body, is used for controlling the balance group and the sampling group according to the detection result of the detection group, and is respectively connected with the balance group and the sampling group; the automatic sampling equipment for detecting the water environment with the controllable submergence depth provided by the invention can prevent water above the specified depth from entering the cylinder, improves the accuracy of sample collection, can automatically determine the position without accessing other external devices and collect the sample, and improves the efficiency of sample collection.
Description
Technical Field
The invention relates to the technical field of sampling equipment, in particular to automatic sampling equipment for detecting a water environment, wherein the submergence depth of the automatic sampling equipment is controllable.
Background
The water quality sampling is to collect a sample of a water area to be sampled and analyze the collected sample so as to obtain the water quality condition of the water area; in some special sampling, the water needs to be collected according to different depths in a water area;
in the prior art, a sampling barrel is immersed in water and submerged to a certain depth, and then the sampling barrel is opened to collect a sample; however, water enters the sampling barrel during the submergence process of the sampling barrel, so that the finally collected water is not completely a sample with a specified depth, but the water above the specified depth is collected, and the sample is poor in representativeness.
Disclosure of Invention
The invention aims to provide automatic sampling equipment for detecting a water environment with controllable submergence depth, which can automatically collect samples according to setting;
the invention provides an automatic sampling device for detecting a water environment with controllable submergence depth, which comprises:
the cylinder is used for mounting the integral component and collecting a sample; a liquid inlet is arranged on the cylinder body;
the balance group is arranged on the cylinder and used for carrying out overall balance adjustment after reaching a specified position;
the sampling group is arranged in the cylinder and is used for enabling the sample to enter the cylinder;
the detection group is arranged on the cylinder body and used for detecting the position depth of the liquid inlet;
and the control group is arranged in the cylinder body, is used for controlling the balance group and the sampling group according to the detection result of the detection group, and is respectively connected with the balance group and the sampling group.
As a further technical solution, the cylinder includes:
the sampling space and the installation space, and the liquid inlet is arranged in the sampling space;
the control group sets up in installation space, places sample space in behind the installation space is passed to sample group one end.
As a further technical solution, the balance group includes:
the air supply part is arranged on the outer surface of the cylinder body;
the balancing part is arranged at one end of the cylinder body far away from the liquid inlet.
As a further aspect, the balancing unit includes:
one end of each connecting rope is connected with one end of the cylinder body far away from the liquid inlet;
the air bag is connected with the other ends of the connecting ropes;
the air pump is arranged in the cylinder body, is connected with the air supply part and the air bag and is connected with the control group.
As a further technical solution, the sampling group includes:
the action rod is arranged in the sleeve in the cylinder in a penetrating way;
the sampling disc is connected with one end of the action rod;
and the driving part is arranged in the cylinder body and is connected with the action rod.
As a further technical solution, the driving part includes:
the action wheel is sleeved on the action rod and is in threaded connection with the action rod; and the action wheel is pressed against one end of the sleeve;
the driving device is arranged on the driving frame in the cylinder body, and a driving wheel on an output shaft of the driving device is meshed with the action wheel;
and the positioning wheel is arranged in the cylinder body, is meshed with the action wheel and is arranged opposite to the driving device.
As a further technical scheme, the outer surface of the sampling disc is provided with a sealing ring.
As a further technical solution, the method further comprises:
the first buffer group is arranged between the sleeve and the action wheel.
As a further technical solution, the detection group includes:
and the detection bodies are arranged in the installation body on the outer surface of the cylinder body and are connected with the control group.
As a further technical solution, the method further comprises:
and the level gauge is arranged in the cylinder body and is connected with the control group.
According to the technical scheme, the control group is arranged in the barrel, the position information of the liquid inlet on the barrel is acquired through the signals of the detection group acquired by the control group, the balance group is further controlled to act, the barrel is maintained at the designated position through the balance group, the sampling group is controlled to act, and the sampling group is further enabled to suck the sample at the position into the barrel to complete sample collection.
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 description of the embodiments or 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 other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of an automatic sampling device for detecting a water environment with controllable submergence depth according to the invention;
FIG. 2 is a schematic diagram of the internal structure of the automatic sampling device for detecting the water environment with controllable submergence depth of the invention;
FIG. 3 is an enlarged view of the structure of portion A in FIG. 2;
FIG. 4 is an enlarged view of the structure of part B in FIG. 3;
fig. 5 is a control relationship block diagram.
Description of reference numerals:
1-a cylinder body; 11-a sampling space; 12-an installation space; 13-a sleeve; 2-liquid inlet; 3-balance group; 31-an air supply part; 32-a balance; 321-a connecting rope; 322-air bag; 323-air pump; 4-sample group; 41-action lever; 42-a sampling tray; 43-a drive section; 431-action wheel; 432-a drive; 433-driving wheels; 434-positioning wheel; 435-a first buffer group; 4351-platen; 4352-fixed disc; 4353-ball bearings; 4354-race; 44-a sealing ring; 5-detection group; 51-a detection body; 52-a mounting body; 6-control group; 7-level meter.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. 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.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 5, the present invention provides an automatic sampling device for detecting a water environment with controllable submergence depth, which comprises:
the device comprises a cylinder body 1, a sample collecting device and a control device, wherein the cylinder body 1 is used for mounting integral components and collecting samples; a liquid inlet 2 is arranged on the cylinder body 1; when sample collection is carried out, a sample enters the cylinder body 1 through the liquid inlet 2, the position of the liquid inlet 2 can be provided with an electromagnetic valve, when sample collection is carried out, the electromagnetic valve can be opened through the control group 6, and after the sample collection is finished, the electromagnetic valve can be closed through the control group 6; of course, a check valve and the like can be arranged at the liquid inlet 2, which is not further limited by the invention; wherein the content of the first and second substances,
the cylinder body 1 comprises a sampling space 11 and an installation space 12, and the liquid inlet 2 is arranged in the sampling space 11; the control group 6 is arranged in the installation space 12, and one end of the sampling group 4 passes through the installation space 12 and then is arranged in the sampling space 11; that is, in the present invention, the sampling space 11 and the installation space 12 are relatively independent spaces, and the installation of corresponding parts and the storage of samples are respectively performed, that is, when the samples are collected, the samples enter the sampling space 11 through the liquid inlet 2; it should be noted that the installation space 12 is independent from the sampling space 11, and the installation space 12 is sealed to prevent water from entering the installation space 12;
the balance group 3 is arranged on the cylinder body 1, and the overall balance adjustment is carried out through the balance group 3 after the cylinder body reaches a specified position; the sampling group 4 is arranged in the cylinder body 1, and a sample enters the cylinder body 1 through the sampling group 4; the detection group 5 is arranged on the cylinder body 1, and the position depth of the liquid inlet 2 is detected through the detection group 5; the control group 6 is arranged in the cylinder body 1 and is respectively connected with the balance group 3 and the sampling group 4, and the balance group 3 and the sampling group 4 are controlled by the control group 6 according to the detection result of the detection group 5;
during actual use, the cylinder body 1 is placed in a water area to be measured, the whole body can submerge under the action of self gravity, and the detection group 5 is used for measuring in the submerging process, so that the position of the liquid inlet 2 is obtained; in the invention, the detection group 5 comprises a plurality of detection bodies 51, and the detection bodies 51 are arranged in a mounting body 52 on the outer surface of the cylinder body 1 and are all connected with the control group 6; after the information is acquired through the detection body 51, the information is sent to the control group 6, and whether the specified depth is reached is judged through the control group 6; the detection body 51 is preferably a pressure sensor, and the current depth of the liquid inlet 2 is obtained by obtaining the pressure in the water area, in the invention, the control group 6 is a PLC programmable controller, and the specified depth data can be input into the control group 6 before use so as to determine the submergence position after being compared with the data of the detection group 5; certainly, a wireless transmission device can also be arranged and connected with the control group 6, so as to realize communication between the control group 6 and the outside, control the control group 6, and adjust data in the control group 6, such as changing the submergence depth;
as shown in fig. 1 or fig. 2, two detection sets 5 are preferably arranged on the surface of the cylinder 1, and the positions of the detection sets 5 and the liquid inlet 2 are in the same horizontal plane, so that the depth of the liquid inlet 2 in the water area can be obtained through the pressure value obtained by the detection sets 5;
when the pressure value detected by the detecting body 51 reaches the pressure at the designated position, the pressure signal is transmitted to the control group 6, the operation of the balancing group 3 is controlled by the control group 6, the barrel 1 can be in a balanced state at the designated position by the balancing group 3,
in the present invention, the balancing unit 32 includes: a plurality of connecting ropes 321, an air bag 322 and an air pump 323, wherein one end of each of the connecting ropes 321 is connected with one end of the cylinder body 1 far away from the liquid inlet 2; specifically, a plurality of connecting rings are arranged at the top of the barrel body 1, one ends of a plurality of connecting ropes 321 are fixed on the connecting rings, and preferably, 4 connecting ropes 321 are arranged and fixed with four connecting rings at the top of the barrel body 1; the air bag 322 is connected with the other ends of the connecting ropes 321, specifically, the bottom of the air bag 322 is provided with a fixing ring, the other ends of the connecting ropes 321 are connected with the fixing ring, and then the balance of the barrel 1 is controlled by the restarted air bag 322 after connection; the air pump 323 is arranged in the cylinder body 1, is connected with the air supply part 31 and the air bag 322 and is connected with the control group 6;
after the control signal of the control group 6 is sent to the air pump 323, the air pump 323 operates to deliver the gas pre-stored in the gas supply part 31 to the air bag 322, the air bag 322 gradually increases after obtaining the gas, and the detection is performed by the detection group 5 in the process, when the detection result of the detection group 5 is unchanged, it is proved that the cylinder 1 is in a balanced state, the air pump 323 is controlled by the control group 6 to stop the operation of the air pump 323, and the cylinder 1 is in a balanced state under the action of the air bag 322;
in the invention, the air supply part 31 is a plurality of air tanks which are arranged on the outer surface of the barrel 1 at equal intervals and are connected with the air pump 323; when air supply is performed, the plurality of air tanks simultaneously supply air to the air pump 323 to ensure that the stock in the air tanks is in a balanced state; of course, the gas tank is also connected to the control group 6, and solenoid valves are provided between the plurality of gas tanks and the gas pump 323, and the opening and closing of the solenoid valves are controlled by the control group 6 to adjust the horizontal state of the bowl 1 by adjusting the gas stock in the gas tanks; namely, the invention is provided with a level 7, and the level 7 is arranged in the cylinder body 1 and is connected with the control group 6; specifically, the level 7 is arranged in the installation space 12 and connected with the control group 6, so that the control group 6 can acquire data of the level 7 and perform corresponding control, so as to adjust the air supply of the plurality of air tanks through the feedback of the level 7, thereby realizing the balance adjustment of the cylinder body 1;
after the gas supply is finished, the cylinder body 1 is in a horizontal state; the control group 6 controls the sampling group 4 to act, so that the sample enters the sampling space 11 in the cylinder body 1 through the liquid inlet 2 by the action of the sampling group 4, wherein,
the sampling group 4 comprises an action rod 41, a sampling disc 42 and a driving part 43, wherein the action rod 41 is arranged in the sleeve 13 in the cylinder body 1 in a penetrating way; the sampling disc 42 is connected with one end of the action rod 41; the driving part 43 is arranged in the cylinder 1 and connected with the action rod 41; the control group 6 controls the driving part 43, so that the driving part 43 drives the action rod 41 to move axially in the sleeve 13, and further drives the sampling disc 42 to act, and under the action of the sampling disc 42, a sample can enter the sampling space 11 through the liquid inlet 2; in addition, in the installation space 11, a battery is further provided, and the power supply is connected to the driving part 43, the control group 6, and the air pump 323; the driving part 43, the control group 6 and the air pump 323 are supplied with working power by a battery; and the air pump 323 is disposed at one side of the installation space 11 and the driving part 43 and the battery are disposed at the other side of the installation space 11, so that the balance of the drum 1 can be maintained by weight; wherein the content of the first and second substances,
the driving part 43 comprises an action wheel 431, a driving device 432 and a positioning wheel 434, wherein the action wheel 431 is sleeved on the action rod 41 and is in threaded connection with the action rod 41; and the action wheel 431 is abutted against one end of the sleeve 13; the driving device 432 is arranged on a driving frame in the cylinder 1, and a driving wheel 433 on an output shaft of the driving device 432 is meshed with the action wheel 431; the positioning wheel 434 is arranged in the cylinder 1, meshed with the action wheel 431 and arranged opposite to the driving device 432; in the present invention, the preferred drive 432 is a motor;
specifically, one end of the sleeve 13 is connected with the inner side of the top of the cylinder 1, and the other end of the sleeve is abutted against the action wheel 431, so that the action wheel 431 can be limited by the sleeve to not displace in the axial direction; the driving device 432 and the positioning wheel 434 are oppositely arranged on two sides of the action wheel 431, so that the radial displacement of the action wheel 431 is limited through the matching of the driving device 432 and the positioning wheel 434; therefore, when the driving device 432 operates to drive the driving wheel 433 to rotate, the driving wheel 431 can be driven to rotate; because the action wheel 431 is in threaded connection with the action rod 41, when the action wheel 431 rotates at a limited position, the action rod 41 is driven to rotate, so that the action rod 41 drives the sampling disc 42 to act in the axial direction; in the invention, in an initial state, the sampling disc 42 is positioned at the bottom of the sampling space 11, when the action rod 41 rotates, the sampling disc 42 is driven to rotate, the sampling disc 42 gradually moves towards the direction far away from the bottom of the sampling space 11, and under the action of the sampling disc 42, a sample enters the sampling space through the liquid inlet 2;
as shown in fig. 2, the sampling disc 42 is adapted to the inner wall of the cylinder 1, so that when the sampling disc 42 is driven by the actuating rod 41 to move, the sampling disc 42 generates a suction force, so that the sample enters the sampling space 11 through the liquid inlet 2 under the action of the suction force; to increase the suction force, in the present invention, it is preferable to provide a sealing ring 44, the sealing ring 44 being provided on the outer surface of the sampling plate 42; the sealing ring 44 is preferably a rubber sealing ring 44, so that the sealing between the sampling disc 42 and the interior of the cylinder 1 is increased or decreased, and when the sampling disc 42 is driven by the action rod 41 again to act, the generated suction force is larger, so that the sample entering efficiency is better;
of course, since the sleeve 13 collides with the action wheel 431 and the action wheel 431 rotates under the driving of the driving device 432, friction between the action wheel 431 and the sleeve 13 is caused, on one hand, the sleeve 13 and the action wheel 431 are damaged, on the other hand, the power consumption of the driving device 432 is affected due to the generation of friction, and therefore, the first buffer group 435 is disposed between the sleeve 13 and the action wheel 431; the friction force between the sleeve 13 and the action wheel 431 is buffered by the first buffer group 435, so that the action wheel 431 and the sleeve 13 are prevented from being damaged, and the power consumption of the driving device 432 is reduced;
the first buffer group 435 includes a pressure plate 4351, a fixed plate 4352, balls 4353 and a raceway 4354, the pressure plate 4351 is fixedly connected with one end of the sleeve 13, the fixed plate 4352 is fixedly connected with the top surface (the surface adjacent to the sleeve 13) of the action wheel 431, the opposite surfaces of the pressure plate 4351 and the fixed plate 4352 are both provided with annular grooves, the annular grooves form the raceway 4354 after the pressure plate 4351 and the fixed plate 4352 are combined, and the raceways 4353 are arranged in the raceway 4354; thus, when the action wheel 431 is driven by the driving device 432 to rotate, the friction force between the pressure plate 4351 and the fixed plate 4352 can be buffered through the balls 4353 in the raceway 4354;
in addition, the action wheel 431 generates friction with the bottom of the installation space 12, and in order to reduce the friction force, a second buffer group is preferably arranged between the action wheel 431 and the bottom of the installation space 12; the friction between the action wheel 431 and the bottom of the installation space 12 is reduced through the second buffer group; in the present invention, the second buffer group can have the same structure as the first buffer group 435, and therefore, the present invention is not further described herein;
according to the technical scheme, the control group 6 is arranged in the barrel 1, the control group 6 is used for acquiring signals of the detection group 5 to acquire the position information of the liquid inlet 2 on the barrel 1, the balance group 3 is further controlled to act, the barrel 1 is maintained at the designated position through the balance group 3, and the sampling group 4 is controlled to act, so that the sampling group 4 sucks a sample at the position into the barrel 1 to finish sample collection.
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; while the invention has been described in detail and with reference to the foregoing embodiments, it will 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; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a controllable type of dive degree of depth water environment detects uses automatic sampling equipment which characterized in that includes:
a cylinder (1) for mounting an integral component and collecting a sample; a liquid inlet (2) is arranged on the cylinder body (1);
the balance group (3) is arranged on the cylinder body (1) and is used for carrying out overall balance adjustment after reaching a specified position;
the sampling group (4) is arranged in the cylinder body (1) and is used for enabling a sample to enter the cylinder body (1);
the detection group (5) is arranged on the cylinder body (1) and is used for detecting the position depth of the liquid inlet (2);
the control group (6) is arranged in the cylinder body (1) and used for controlling the balance group (3) and the sampling group (4) according to the detection result of the detection group (5) and is respectively connected with the balance group (3) and the sampling group (4).
2. The automatic sampling device for detecting the underwater environment with controllable submergence depth according to claim 1, characterized in that the cylinder (1) comprises:
a sampling space (11) and an installation space (12), wherein the liquid inlet (2) is arranged in the sampling space (11);
the control group (6) is arranged in the installation space (12), and one end of the sampling group (4) penetrates through the installation space (12) and then is placed in the sampling space (11).
3. The automatic sampling device for detecting the underwater environment with controllable submergence depth according to claim 1, characterized in that the balance group (3) comprises:
the gas supply part (31) is arranged on the outer surface of the cylinder (1);
the balance part (32) is arranged at one end, far away from the liquid inlet (2), of the cylinder body (1).
4. The automatic sampling apparatus for detecting aquatic environment of controlled submergence depth according to claim 3, wherein the balancing part (32) comprises:
one end of each connecting rope (321) is connected with one end, far away from the liquid inlet (2), of the barrel body (1);
an airbag (322) connected to the other end of the plurality of connecting ropes (321);
the air pump (323) is arranged in the barrel (1), is connected with the air supply part (31) and the air bag (322), and is connected with the control group (6).
5. The automatic sampling device for detecting the underwater environment with controllable submergence depth according to claim 1, characterized in that the sampling group (4) comprises:
the action rod (41) is arranged in the sleeve (13) in the cylinder body (1) in a penetrating way;
a sampling disc (42) connected to one end of the operating rod (41);
and a drive unit (43) which is provided in the cylinder (1) and connected to the operating rod (41).
6. The automatic sampling apparatus for detecting aquatic environment of controlled submergence depth according to claim 5, wherein the driving part (43) comprises:
the action wheel (431) is sleeved on the action rod (41) and is in threaded connection with the action rod (41); the action wheel (431) is abutted against one end of the sleeve (13);
a driving device (432) which is arranged on a driving frame in the cylinder body (1), and a driving wheel (433) on an output shaft of the driving device (432) is meshed with the action wheel (431);
and a positioning wheel (434) which is arranged in the cylinder body (1), is meshed with the action wheel (431), and is arranged opposite to the driving device (432).
7. The automatic sampling device for detecting the underwater environment with controllable submergence depth as claimed in claim 5, characterized in that the outer surface of the sampling disc (42) is provided with a sealing ring (44).
8. The automatic sampling device for detecting the underwater environment with controllable submergence depth according to claim 6, characterized by further comprising:
a first buffer group (435) disposed between the sleeve (13) and the action wheel (431).
9. The automatic sampling device for detecting the underwater environment with controllable submergence depth according to claim 1, characterized in that the detection group (5) comprises:
and the detection bodies (51) are arranged in the installation body (52) on the outer surface of the cylinder body (1) and are connected with the control group (6).
10. The automatic sampling device for detecting the underwater environment with controllable submergence depth according to claim 1, characterized by further comprising:
the level gauge (7) is arranged in the barrel body (1) and is connected with the control group (6).
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| CN202110957418.1A CN113405859B (en) | 2021-08-20 | 2021-08-20 | Automatic sampling equipment for detecting water environment with controllable submergence depth |
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| CN202110957418.1A CN113405859B (en) | 2021-08-20 | 2021-08-20 | Automatic sampling equipment for detecting water environment with controllable submergence depth |
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| CN109856354A (en) * | 2019-01-09 | 2019-06-07 | 皖西学院 | A kind of water environment real-time watch device |
| CN111766107A (en) * | 2020-06-23 | 2020-10-13 | 汪小琴 | Single body type marine environment monitoring water body sampling device capable of controlling sampling depth |
| CN112834285A (en) * | 2021-03-16 | 2021-05-25 | 马珂 | Water environment detects uses sewage collection equipment |
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| CN114593958A (en) * | 2022-05-07 | 2022-06-07 | 奥来国信（北京）检测技术有限责任公司 | Continuous intermittent sampling and sample reserving device in remote control sewage inspection well |
| CN114593958B (en) * | 2022-05-07 | 2022-07-22 | 奥来国信（北京）检测技术有限责任公司 | Continuous discontinuous sampling sample reserving device in remote control sewage inspection well |
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