Pollutant sampling device for water pollution treatment and detection

Abstract

The invention relates to the technical field of sewage sampling equipment, in particular to a pollutant sampling device for water pollution treatment and detection, which comprises a machine body and a winding roller arranged on the machine body, a first hose is wound on the winding roller, a suction assembly is arranged beside the winding roller, and a second hose is arranged beside the suction assembly. A water inlet of the suction assembly is connected with a water outlet of the first hose; a rotary disc is further arranged on the machine body, a plurality of stations are arranged on the rotary disc in a surrounding mode, at least one sampling bottle and a backflow pipe are arranged on the rotary disc, a first hose can be unwound to different water layers through a winding roller to collect water samples, and clean water can flow through the backflow pipe after collection is completed; the suction head, the first hose, the second hose and the drain pipe are used for backwashing so as to complete water sample collection of a next water layer, and the plurality of groups of sampling bottles arranged on the rotary disc are matched with large-batch water sample collection work, so that the light weight and adaptability of the sampling equipment are realized.

Description

Technical Field

[0001] The invention relates to the technical field of sewage sampling equipment, in particular to a pollutant sampling device for water pollution control and detection. Background Art

[0002] In water pollution control testing, sampling is a key step in assessing water pollution and formulating effective treatment plans; water pollutants are often distributed unevenly in water bodies, so obtaining representative water samples is crucial to accurately reflect water quality conditions; in order to ensure the accuracy of test results, water sample collection must be scientific and standardized; For example, a sampling device for pollutant detection disclosed in application number CN202411441260.2 includes a body, a door and a control panel are provided at the front end of the body, a universal wheel is provided at the bottom of the body, a slide groove is provided at the front end of the body, and a placement plate is provided inside the body. The present invention sets a water sampling mechanism so that when it is necessary to sample the target water area, the motor can be turned on to drive the rotating rod 2 to rotate. The rotation of the rotating rod 2 will drive the rotating rod 1 and the rotating rod 3 to rotate intermittently through the cooperation of the driving gear 1, the driving gear 2, the driven gear and other components, so that the three groups of winding rollers are unwound to different degrees, and the three groups of sample delivery tubes and their bottom collection heads will fall to different depths of the target water area. At this time, turning on the three groups of extraction pumps can extract samples at different depths of the target water area. It is simple and convenient to use and is not easy to delay the overall sampling progress.

[0003] The above patent proposes to sample water layers of different depths by setting up multiple groups of sampling tubes, but this equipment has certain limitations. The method in which one group of sampling tubes corresponds to one water layer water sample means that if there are more water layers that need to be sampled, more groups of corresponding sampling tubes need to be set up, resulting in the problem of large filtration of the overall equipment.

[0004] Therefore, we propose a pollutant sampling device for water pollution control and detection in order to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide a pollutant sampling device for water pollution control and detection, so as to solve the problem that in the prior art proposed by the above background technology, one group of sampling tubes corresponds to one water layer water sample, resulting in the need to set up more groups of corresponding sampling tubes if there are more water layers to be sampled, resulting in the problem of bulky filtering of the overall equipment.

[0006] To achieve the above object, the present invention provides the following technical solutions: A pollutant sampling device for water pollution control detection comprises an organism and a winding roller arranged on the organism, a first hose is wound around the winding roller, a suction assembly is arranged beside the winding roller, and a water inlet of the suction assembly is connected to a water outlet of the first hose; The machine body is also provided with a turntable, on which a plurality of workstations are arranged around, and on which at least one sampling bottle and a reflux pipe are arranged. The sampling bottle and the reflux pipe are both installed at the turntable workstation. The sampling bottle can receive the sampling water discharged by the suction component, and the reflux pipe is connected to an external water source, and is used for reversely backwashing the suction component and the first hose.

[0007] Preferably, the winding roller includes two baffles, a central axis frame is arranged between the two baffles, a central axis tube is arranged coaxially with the first baffle, a central axis rod is arranged coaxially with the second baffle, the central axis frame is composed of a plurality of arc-shaped plates arranged around, and the inner diameter of the arc-shaped plates is greater than the outer diameter of the central axis tube; Both ends of the central axis tube are in a connected state, one end of the central axis tube is connected to the water inlet of the first hose through a joint, the first hose is wound on the central axis frame, the first hose is wound on the central axis frame, and a suction head is provided at the water outlet of the first hose; The central axis tube and the central axis rod are arranged on the machine body through a bearing frame, a first servo motor is arranged on the bearing frame, and an output shaft of the servo motor is drivingly connected with the central axis rod.

[0008] Preferably, the suction assembly includes a water pump arranged on the machine body, a second hose is arranged at one end of the water pump, a water outlet of the second hose is connected to the water inlet of the central axis tube, and a drain pipe is arranged at the other end of the water pump.

[0009] Preferably, the rotary disk includes a supporting tube, the bottom wall of the supporting tube is provided with a bottom hole, and the bottom hole is arranged around the axis of the supporting tube; A cover plate is provided on the top of the support cylinder, and a top hole corresponding to the bottom hole is provided on the cover plate; A circular plate is arranged in the bottom hole, and the sampling bottle and the reflux tube are arranged on the corresponding circular plates respectively; The rotary disc has a docking position and a discharge position. The machine body is provided with a first lifting mechanism for controlling the longitudinal movement of the circular plate at the docking position. The machine body is also provided with a second lifting mechanism for controlling the longitudinal movement of the circular plate at the discharge position.

[0010] Preferably, a rolling body is arranged at the bottom of the circular plate, and the rolling body is arranged around the axis of the circular plate. The bottom of the circular plate extends downward to form an adsorption portion.

[0011] Preferably, a connecting pipe is provided at the bottom of the support tube, the connecting pipe penetrates the bottom of the support tube and is fixedly connected thereto, the connecting pipe also penetrates the machine body and is rotatably connected thereto through a bearing, the connecting pipe is hollow and closed at both ends, and the reflux pipe is connected to the inside of the connecting pipe through a third hose; The top opening of the reflux pipe is a water outlet, the bottom end of the drain pipe is conical, and a rubber ring that can contact the inner wall of the conical bottom end of the drain pipe is arranged at the top end of the reflux pipe.

[0012] Preferably, a communication port is provided on the communication pipe, a ring body is sleeved on the communication pipe and is rotatably connected thereto, the ring body is located below the support tube and wraps the communication port, two end rings are provided on the outer wall of the communication pipe, the two end rings are located at the upper and lower sides of the communication port respectively, a sealing ring is sleeved on the end ring, and the end ring is rotatably sealed and connected to the inner wall of the ring body through the sealing ring; The ring body is fixedly connected to the machine body, and the ring body is connected to an external water source through a fourth hose.

[0013] Preferably, a second servo motor is provided on the machine body, the output shaft of the second servo motor is provided with a first gear, a second gear is sleeved and fixed on the connecting pipe, and the second gear is located below the supporting tube, and the first gear and the second gear are connected by a chain transmission.

[0014] Preferably, the first lifting mechanism comprises a first supporting plate, a first column is arranged on the top of the first supporting plate, the top of the first column is concave downward, and a first electromagnet is arranged at the concave part; The first lifting mechanism also includes a first guide rod and a first threaded rod, wherein the first guide rod penetrates the first support plate and is slidably connected thereto, and the first guide rod is fixedly connected to the machine body; the first threaded rod penetrates the first support plate and is threadedly connected thereto through a nut; The first lifting mechanism also includes a third servo motor, and the output shaft of the third servo motor is transmission-connected to the first threaded rod through a first synchronous pulley set.

[0015] Preferably, the second lifting mechanism comprises a second supporting plate, a second column is arranged on the top of the second supporting plate, the top of the second column is concave downward, and a second electromagnet is arranged at the concave part; The second lifting mechanism also includes a second guide rod and a second threaded rod, the second guide rod penetrates the second support plate and is slidably connected thereto, and the second guide rod is fixedly connected to the machine body; the second threaded rod penetrates the second support plate and is threadedly connected thereto through a nut; The second lifting mechanism also includes a fourth servo motor, and the output shaft of the fourth servo motor is transmission-connected to the second threaded rod through a second synchronous pulley set.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The first hose can be unwound to different water layers through the winding roller to collect water samples, and after the collection is completed, the clean water flow can be backwashed to the suction head, the first hose, the second hose and the drain pipe through the reflux pipe to complete the water sample collection of the next water layer, and multiple groups of sampling bottles arranged on the turntable are used to cooperate with the large-scale water sample collection work, thereby realizing the lightweight and adaptability of the sampling equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ; Figure 3 It is a schematic diagram of the three-dimensional structure of the winding roller of the present invention; Figure 4 It is a schematic diagram of the three-dimensional decomposition structure of the present invention; Figure 5 is a side view of the present invention; Figure 6 It is a schematic diagram of the internal structure of the present invention; Figure 7 The three-dimensional structure of the present invention is shown in FIG. Figure 3 ; In the figure: 1-body; 2-winding roller; 21-baffle; 22-middle axis frame; 23-middle axis tube; 24-first servo motor; 3-first hose; 31-sampling bottle; 32-suction head; 4-suction assembly; 41-second hose; 42-water pump; 43-drain pipe; 5-turn plate; 51-support cylinder; 52-cover plate; 53-circular plate; 54-connecting pipe; 541-connecting port; 542-end ring; 543-fourth hose; 55-second servo motor; 56-first gear; 57-second gear; 6-reflux pipe; 61-third hose; 62-rubber ring; 7-ring body; 8-first lifting mechanism; 81-first support plate; 82-first column; 83-first electromagnet; 84-first guide rod; 85-first threaded rod; 86-third servo motor; 87-first synchronous pulley set; 9-second lifting mechanism; 91-second support plate; 92-second column; 93-second electromagnet; 94-second guide rod; 95-second threaded rod; 96-fourth servo motor; 97-second synchronous pulley set. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] In a first aspect of the present invention, a pollutant sampling device for water pollution control detection is provided, such as Figures 1 to 7 As shown, it comprises an organism 1, and a winding roller 2 arranged on the organism 1, a first hose 3 is wound around the winding roller 2, a suction assembly 4 is arranged beside the winding roller 2, and a water inlet of the suction assembly 4 is connected to a water outlet of the first hose 3; The body 1 is also provided with a turntable 5, on which a plurality of workstations are arranged around. The turntable 5 is provided with at least one sampling bottle 31 and a reflux pipe 6. The sampling bottle 31 and the reflux pipe 6 are both installed at the workstation of the turntable 5. The sampling bottle 31 can receive the sampling water discharged by the suction component 4. The reflux pipe 6 is connected to an external water source. The reflux pipe 6 is used for reversely backwashing the suction component 4 and the first hose 3.

[0022] The winding roller 2 includes two baffles 21, and a central axis frame 22 is arranged between the two baffles 21. A central axis tube 23 is arranged coaxially with the first baffle 21, and a central axis rod is arranged coaxially with the second baffle 21. The central axis frame 22 is composed of a plurality of arc-shaped plates arranged around, and the inner diameter of the arc-shaped plates is larger than the outer diameter of the central axis tube 23. Both ends of the central axis tube 23 are in a connected state, one end of the central axis tube 23 is connected to the water inlet of the first hose 3 through a joint, the first hose 3 is wound around the central axis frame 22, the first hose 3 is wound around the central axis frame 22, and a suction head 32 is provided at the water outlet of the first hose 3; The central axis tube 23 and the central axis rod are arranged on the machine body 1 through a bearing frame, a first servo motor 24 is arranged on the bearing frame, and an output shaft of the servo motor is drivingly connected to the central axis rod.

[0023] The suction assembly 4 includes a water pump 42 arranged on the body 1, one end of the water pump 42 is provided with a second hose 41, the water outlet of the second hose 41 is connected to the water inlet of the central axis tube 23, and the other end of the water pump 42 is provided with a drain pipe 43.

[0024] The rotary disk 5 includes a support tube 51, a bottom hole is formed on the bottom wall of the support tube 51, and the bottom hole is arranged around the axis of the support tube 51; A cover plate 52 is disposed on the top of the support tube 51, and a top hole corresponding to the bottom hole is disposed on the cover plate 52; A circular plate 53 is disposed in the bottom hole, and the sampling bottle 31 and the reflux tube 6 are disposed on the corresponding circular plates 53 respectively; The rotary disc 5 has a docking position and a discharge position. The machine body 1 is provided with a first lifting mechanism 8 for controlling the longitudinal movement of the circular plate 53 at the docking position. The machine body 1 is also provided with a second lifting mechanism 9 for controlling the longitudinal movement of the circular plate 53 at the discharge position.

[0025] A rolling body is disposed at the bottom of the circular plate 53, and the rolling body is disposed around the axis of the circular plate 53. The bottom of the circular plate 53 extends downward to form an adsorption portion.

[0026] A connecting pipe 54 is provided at the bottom of the supporting cylinder 51. The connecting pipe 54 penetrates the bottom of the supporting cylinder 51 and is fixedly connected thereto. The connecting pipe 54 also penetrates the machine body 1 and is rotatably connected thereto through a bearing. The connecting pipe 54 is hollow and closed at both ends. The reflux pipe 6 is connected to the inside of the connecting pipe 54 through a third hose 61. The top opening of the backflow pipe 6 is a water outlet, the bottom end of the drain pipe 43 is conical, and a rubber ring 62 that can contact the inner wall of the conical bottom end of the drain pipe 43 is arranged at the top of the backflow pipe 6.

[0027] The connecting pipe 54 is provided with a connecting port 541, and a ring body 7 is sleeved on the connecting pipe 54 and is rotatably connected thereto. The ring body 7 is located below the supporting tube 51 and wraps the connecting port 541. Two end rings 542 are arranged on the outer wall of the connecting pipe 54. The two end rings 542 are located at the upper and lower sides of the connecting port 541, respectively. A sealing ring is sleeved on the end ring 542, and the end ring 542 is rotatably sealed and connected to the inner wall of the ring body 7 through the sealing ring. The ring body 7 is fixedly connected to the machine body 1 , and the ring body 7 is connected to an external water source via a fourth hose 543 .

[0028] The machine body 1 is provided with a second servo motor 55, the output shaft of the second servo motor 55 is provided with a first gear 56, the connecting pipe 54 is sleeved and fixed with a second gear 57, and the second gear 57 is located below the supporting tube 51, and the first gear 56 and the second gear 57 are connected by a chain transmission.

[0029] The first lifting mechanism 8 includes a first support plate 81, a first column 82 is disposed on the top of the first support plate 81, the top of the first column 82 is concave downward, and a first electromagnet 83 is disposed at the concave part; The first lifting mechanism 8 further includes a first guide rod 84 and a first threaded rod 85. The first guide rod 84 penetrates the first support plate 81 and is slidably connected thereto, and the first guide rod 84 is fixedly connected to the machine body 1; the first threaded rod 85 penetrates the first support plate 81 and is threadedly connected thereto via a nut; The first lifting mechanism 8 further includes a third servo motor 86 , and an output shaft of the third servo motor 86 is transmission-connected to the first threaded rod 85 via a first synchronous pulley set 87 .

[0030] The second lifting mechanism 9 includes a second support plate 91, a second column 92 is disposed on the top of the second support plate 91, the top of the second column 92 is concave downward, and a second electromagnet 93 is disposed at the concave part; The second lifting mechanism 9 further includes a second guide rod 94 and a second threaded rod 95. The second guide rod 94 penetrates the second support plate 91 and is slidably connected thereto, and the second guide rod 94 is fixedly connected to the machine body 1; the second threaded rod 95 penetrates the second support plate 91 and is threadedly connected thereto via a nut; The second lifting mechanism 9 further includes a fourth servo motor 96 , and the output shaft of the fourth servo motor 96 is transmission-connected to the second threaded rod 95 via a second synchronous pulley set 97 .

[0031] In this embodiment, when facing water sample detection at different levels, the length of the first hose 3 unwinding by controlling the winding roller 2 can be controlled. Specifically, the first servo motor 24 drives the central axis rod to rotate, and then drives the entire winding roller 2 to rotate, and the first hose 3 wound on the central axis frame 22 begins to unwind. During the unwinding process, since the suction head 32 itself has a certain counterweight, the first hose 3 can be smoothly inserted into the water, and then the water layer where the suction head 32 is located is sucked by turning on the water pump 42 of the suction assembly 4. The water flows along the first hose 3 through the central axis tube 23, the second hose 41, and the water pump 42 in turn, and finally reaches the drain pipe 43. The water is discharged into the sampling bottle 31 at the docking position of the turntable 5 through the drain pipe 43. At this time, the water sample collection process of this water layer is completed. If it is necessary to collect water samples of another water layer next; The second servo motor 55 is turned on, and the output shaft of the second servo motor 55 drives the first gear 56 to rotate. The first gear 56 drives the second gear 57 to rotate through the chain. The second gear 57 drives the support tube 51 and its cover plate 52 to rotate with it through the connecting pipe 54, so that the reflux tube 6 arranged in the support tube 51 is in the docking position. The first lifting mechanism 8 is turned on, and the output shaft of the third servo motor 86 drives the first threaded rod 85 to rotate through the first synchronous pulley set 87. A nut is provided on the first support plate 81, and the nut is threadedly connected with the first threaded rod 85. Therefore, the first threaded rod 85 will drive the first support plate 81 to rise. The first electromagnet 83 is adsorbed with the adsorption part at the bottom of the corresponding circular plate 53 to prevent the circular plate 53 from deflecting during the lifting process. The column pushes the reflux pipe 6 to rise, so that the top of the reflux pipe 6 is connected with the bottom of the drain pipe 43. Since the bottom of the drain pipe 43 is conical, the top of the reflux pipe 6 is provided with a rubber ring 62 that can contact the inner wall of the conical bottom of the drain pipe 43. Therefore, the bottom of the drain pipe 43 will form a sealed connection after abutting with the top of the reflux pipe 6. Clean water is injected into the drain pipe 43 through the reflux pipe 6, and the water is reversely transported by the water pump 42 to clean the second hose 41 and the inner wall of the second hose 41. During the rotation of the support tube 51, since the connecting tube 54 is provided with a connecting port 541, the connecting tube 54 is sleeved with a ring body 7 and is rotatably connected thereto, the ring body 7 is located below the support tube 51 and wraps the connecting port 541, and the outer wall of the connecting tube 54 is provided with two end rings 542, the two end rings 542 are located at the upper and lower sides of the connecting port 541 respectively, and the end rings 542 are sleeved with sealing rings, and the end rings 542 are rotatably sealed and connected to the inner wall of the ring body 7 through the sealing rings, so during the rotation of the connecting tube 54, the connection state of the fourth hose 543 and the connecting tube 54 through the ring body 7 will not be affected, and an external water source is introduced through the fourth hose 543, and the clean water flow will pass through the ring body 7, the connecting tube 54, the third hose 61, and the reflux tube 6 in sequence; After the first hose 3, the second hose 41 and the inner wall of the drain pipe 43 are cleaned, the rotary disk 5 needs to be controlled to rotate so that the collection bottle that has not been injected with water samples can be rotated to the docking position to facilitate the collection of the water sample that needs to be injected next time; Finally, after completing the water sample collection work, the sampling bottle 31 is in the unloading position when the turntable 5 rotates, and then the second lifting mechanism 9 is turned on. When the second lifting mechanism 9 is turned on, the output shaft of the fourth servo motor 96 drives the second threaded rod 95 to rotate through the second synchronous pulley group 97. A nut is provided on the second support plate 91, and the nut is threadedly connected to the second threaded rod 95. Therefore, the second threaded rod 95 will drive the second support plate 91 to descend, and the second electromagnet 93 is adsorbed with the adsorption part at the bottom of the corresponding circular plate 53, and the sampling bottle 31 is driven to descend and detach from the inside of the support tube 51 through the column, and finally taken out by the staff.

[0032] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0033] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pollutant sampling device for water pollution control detection, characterized in that: It comprises an organism (1), and a winding roller (2) arranged on the organism (1), a first hose (3) being wound around the winding roller (2), a suction assembly (4) being arranged beside the winding roller (2), and a water inlet of the suction assembly (4) being connected to a water outlet of the first hose (3); The machine body (1) is further provided with a rotating disk (5), and a plurality of workstations are arranged around the rotating disk (5). The rotating disk (5) is provided with at least one sampling bottle (31) and a reflux pipe (6), and the sampling bottle (31) and the reflux pipe (6) are both installed at the workstation of the rotating disk (5). The sampling bottle (31) can receive sampling water discharged from the suction component (4), and the reflux pipe (6) is connected to an external water source. The reflux pipe (6) is used to reversely backwash the suction component (4) and the first hose (3).

2. A pollutant sampling device for water pollution control detection according to claim 1, characterized in that: The winding roller (2) comprises two baffles (21), a central axis frame (22) is arranged between the two baffles (21), a central axis tube (23) is arranged on one baffle (21) and is arranged coaxially with the central axis tube (23), and a central axis rod is arranged on the second baffle (21) and is arranged coaxially with the central axis tube (23), the central axis frame (22) is composed of a plurality of arc-shaped plates arranged around the central axis tube (23), and the inner diameter of the arc-shaped plates is greater than the outer diameter of the central axis tube (23); Both ends of the central axis tube (23) are in a connected state, one end of the central axis tube (23) is connected to the water inlet of the first hose (3) via a joint, the first hose (3) is wound around the central axis frame (22), the first hose (3) is wound around the central axis frame (22), and the water outlet of the first hose (3) is provided with a suction head (32); The central axis tube (23) and the central axis rod are arranged on the machine body (1) via a bearing frame, a first servo motor (24) is arranged on the bearing frame, and an output shaft of the servo motor is drivingly connected to the central axis rod.

3. A pollutant sampling device for water pollution control detection according to claim 2, characterized in that: The suction assembly (4) comprises a water pump (42) arranged on the machine body (1); a second hose (41) is arranged at one end of the water pump (42); a water outlet of the second hose (41) is connected to a water inlet of the central axis tube (23); and a drainage pipe (43) is arranged at the other end of the water pump (42).

4. A pollutant sampling device for water pollution control detection according to claim 3, characterized in that: The rotating disk (5) comprises a supporting tube (51), the bottom wall of the supporting tube (51) is provided with a bottom hole, and the bottom hole is arranged around the axis of the supporting tube (51); A cover plate (52) is provided on the top of the support cylinder (51), and a top hole corresponding to the bottom hole is provided on the cover plate (52); A circular plate (53) is arranged in the bottom hole, and the sampling bottle (31) and the reflux tube (6) are respectively arranged on the corresponding circular plate (53); The rotary disc (5) has a docking position and a discharge position. The machine body (1) is provided with a first lifting mechanism (8) for controlling the longitudinal movement of the circular plate (53) at the docking position. The machine body (1) is also provided with a second lifting mechanism (9) for controlling the longitudinal movement of the circular plate (53) at the discharge position.

5. A pollutant sampling device for water pollution control detection according to claim 4, characterized in that: A rolling body is arranged at the bottom of the circular plate (53), and the rolling body is arranged around the axis of the circular plate (53). The bottom of the circular plate (53) extends downward to form an adsorption portion.

6. A pollutant sampling device for water pollution control detection according to claim 4, characterized in that: A connecting pipe (54) is provided at the bottom of the supporting tube (51), the connecting pipe (54) penetrates the bottom of the supporting tube (51) and is fixedly connected thereto, the connecting pipe (54) also penetrates the machine body (1) and is rotatably connected thereto via a bearing, the connecting pipe (54) is hollow and has closed ends, and the reflux pipe (6) is connected to the inside of the connecting pipe (54) via a third hose (61); The top opening of the reflux pipe (6) is a water outlet, the bottom end of the drain pipe (43) is conical, and a rubber ring (62) is provided at the top end of the reflux pipe (6) and can contact the inner wall of the conical bottom end of the drain pipe (43).

7. A pollutant sampling device for water pollution control detection according to claim 6, characterized in that: The connecting tube (54) is provided with a connecting port (541), a ring body (7) is sleeved on the connecting tube (54) and is rotatably connected thereto, the ring body (7) is located below the supporting tube (51) and wraps around the connecting port (541), two end rings (542) are provided on the outer wall of the connecting tube (54), the two end rings (542) are located at the upper and lower sides of the connecting port (541), sealing rings are sleeved on the end rings (542), and the end rings (542) are rotatably sealed and connected to the inner wall of the ring body (7) via the sealing ring; The ring body (7) is fixedly connected to the machine body (1), and the ring body (7) is connected to an external water source via a fourth hose (543).

8. A pollutant sampling device for water pollution control detection according to claim 6, characterized in that: The machine body (1) is provided with a second servo motor (55), the output shaft of the second servo motor (55) is provided with a first gear (56), a second gear (57) is sleeved and fixed on the connecting pipe (54), and the second gear (57) is located below the supporting tube (51), and the first gear (56) and the second gear (57) are connected via a chain transmission.

9. A pollutant sampling device for water pollution control detection according to claim 5, characterized in that: The first lifting mechanism (8) comprises a first support plate (81), a first column (82) is arranged on the top of the first support plate (81), the top of the first column (82) is concave downward, and a first electromagnet (83) is arranged at the concave portion; The first lifting mechanism (8) further comprises a first guide rod (84) and a first threaded rod (85); the first guide rod (84) passes through the first support plate (81) and is slidably connected thereto, and the first guide rod (84) is fixedly connected to the machine body (1); the first threaded rod (85) passes through the first support plate (81) and is threadedly connected thereto via a nut; The first lifting mechanism (8) further comprises a third servo motor (86), the output shaft of the third servo motor (86) being transmission-connected to the first threaded rod (85) via a first synchronous pulley set (87).

10. A pollutant sampling device for water pollution control detection according to claim 5, characterized in that: The second lifting mechanism (9) comprises a second support plate (91), a second column (92) is arranged on the top of the second support plate (91), the top of the second column (92) is concave downward, and a second electromagnet (93) is arranged at the concave portion; The second lifting mechanism (9) further comprises a second guide rod (94) and a second threaded rod (95); the second guide rod (94) passes through the second support plate (91) and is slidably connected thereto, and the second guide rod (94) is fixedly connected to the machine body (1); the second threaded rod (95) passes through the second support plate (91) and is threadedly connected thereto via a nut; The second lifting mechanism (9) further comprises a fourth servo motor (96), the output shaft of the fourth servo motor (96) being transmission-connected to the second threaded rod (95) via a second synchronous pulley set (97).

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