Automatic runoff sediment sampling mechanism

Abstract

The invention discloses an automatic sampling mechanism for runoff sediment. The automatic sampling mechanism comprises a supporting device, the sampling assembly is arranged at the top of the supporting device, and a flow monitoring part is arranged in the sampling assembly; the sampling assembly is arranged in the supporting device, is positioned below the sampling assembly and is matched with the sampling assembly; one end of the rotating assembly is connected with the supporting device, the other end of the rotating assembly is connected with the bottom of the sampling assembly, and the rotating assembly is used for driving the sampling assembly to rotate; the control device is electrically connected with the sampling assembly, the flow monitoring part and the rotating assembly; wherein when runoff sediment is sampled, the flow monitoring piece is used for monitoring the flow of the runoff sediment, so that the control device adjusts the state of the sampling assembly. The technical defect that the sampling operation is affected due to the fact that a collection channel is blocked due to the fact that water flow is too large and carried silt is too high is overcome.

Description

Technical Field

[0001] The invention belongs to the technical field of sediment sampling, and in particular relates to an automatic runoff sediment sampling mechanism. Background Art

[0002] The fundamental cause of soil erosion is that water erodes the surface soil, causing serious damage to water and soil resources and land productivity, thus causing soil erosion problems, which seriously affect the living conditions of humans and other animals and plants.

[0003] At present, the monitoring of soil erosion is mainly completed through sediment sampling. Specifically, within the monitoring range, the target runoff area is selected, and the water flow in the runoff area is sampled through sampling equipment. The sediment content is analyzed from the sampled water flow, thereby obtaining soil erosion data.

[0004] However, due to the high sediment content in the water flow, the existing sampling equipment is unable to adjust the sampling components according to the amount of sediment in the water flow, resulting in a large amount of sediment blocking the sampling channel, making sampling difficult and unable to obtain accurate data; secondly, most of the existing sampling equipment uses a peristaltic pump for water intake, which can easily cause the peristaltic pump to be damaged and require frequent maintenance, causing a sharp increase in sampling costs, which is not conducive to the normal development of sampling operations. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic sampling mechanism for runoff sediment, which, on the one hand, solves the technical defect that the existing sampling equipment cannot adjust the sampling components according to the amount of sediment in the water flow, resulting in a large amount of sediment blocking the sampling channel, making sampling difficult and unable to obtain accurate data; on the other hand, it solves the technical defect that most of the existing sampling equipment use peristaltic pumps to inlet water, resulting in a sharp increase in sampling costs.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A runoff sediment automatic sampling mechanism, comprising: Support device; A sampling assembly is arranged on the top of the supporting device, and a flow monitoring component is arranged in the sampling assembly; A sampling assembly is arranged inside the supporting device and below the sampling assembly, and cooperates with the sampling assembly; A rotating assembly, one end of which is connected to the supporting device and the other end of which is connected to the bottom of the sampling assembly, and the rotating assembly is used to drive the sampling assembly to rotate; A control device electrically connected to the sampling assembly, the flow monitoring component and the rotating assembly; Wherein, when sampling runoff sediment, the flow monitoring component is used to measure the flow of the runoff sediment, so that the control device can adjust the state of the sampling component.

[0007] Further, the sampling assembly includes a box body, the box body is arranged at the top of one side of the supporting device, and the flow monitoring component is arranged at the top of the box body; a tipping bucket and a damper are arranged in the box body, the tipping bucket is rotatably connected to the box body through a tipping bucket bearing, and the damper is arranged above the tipping bucket; A water inlet pipe is provided on the outside of the box body, one end of the water inlet pipe is connected to the inside of the box body, and the other end is connected to the push rod water inlet pipe, the end of the push rod water inlet pipe is connected to the push rod fixing frame, and the push rod fixing frame is installed with an adjustment component and a water pipe, one end of the water pipe is rotatably connected to the push rod fixing frame, and the other end is rotatably connected to the adjustment component, and the water pipe cooperates with the sampling component.

[0008] Furthermore, the flow monitoring component is a reed switch.

[0009] Furthermore, the water pipe includes a sampling pipe and a drainage pipe, the push rod fixing frame includes a fixing frame body, a diversion cabin and a regulating cabin, the diversion cabin is arranged on the fixing frame body, and the regulating cabin is rotatably connected to the diversion cabin; The end of the push rod water inlet pipe is installed on the fixing frame body and extends into the diversion cabin. One end of the sampling pipe and the drainage pipe are both connected to the regulating cabin, and the other ends of the sampling pipe and the drainage pipe are far away from each other. The adjustment assembly includes an electric push rod and a rotating shaft. The rotating shaft is arranged outside the drain pipe, and the end of the electric push rod cooperates with the rotating shaft.

[0010] Furthermore, the electric push rod and the sampling tube are both located above the drain pipe.

[0011] Furthermore, the sampling component includes a rotating disc, the rotating component is arranged at the bottom of the rotating disc, a plurality of weighing sensors are arranged on the outer circumference of the rotating disc, a sampling bottle holder plate is arranged on the plurality of weighing sensors, and a sampling bottle is installed in the sampling bottle holder.

[0012] Furthermore, a sampling bottle fixing plate is installed on the top of the rotating disc, the sampling bottle fixing plate is gear-shaped, and the edge of the sampling bottle fixing plate cooperates with the sampling bottle.

[0013] Furthermore, the rotating assembly includes a base plate, the base plate is detachably connected to the rotating disc, a motor is installed at the bottom of the base plate, and a driving end of the motor is connected to the rotating disc.

[0014] Furthermore, a three-color warning light is provided on the outside of the sampling bottle.

[0015] Furthermore, the supporting device comprises a cabinet, the sampling assembly, the rotating assembly and the control device are all arranged in the cabinet, and the bottom of the cabinet is provided with a Forma wheel around it.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. When the sampling mechanism is used to sample the water flow in the runoff area, the sampling component is aligned with the direction of the water flow, and the water flow can flow smoothly into the sampling component through the sampling component. In the process of the water flow entering the sampling component, the flow monitoring component in the sampling component can count the amount of runoff, and the control device adjusts the state of the sampling component according to the amount of runoff, thereby solving the technical defects of excessive water flow and excessive sediment content, which causes the collection channel to be blocked and affects the sampling operation; secondly, during the sampling process, the mechanism does not need to use a peristaltic pump to operate, thereby reducing the sampling cost.

[0017] 2. A flow monitoring device is installed on the top of the box to monitor the flow information of the water flow in real time and accurately, providing reliable data support for sampling. The bucket is rotatably connected to the box through the bucket bearing, and the use of the damper ensures the stability and reliability of the bucket when receiving the water flow. The damper can effectively slow down the turning speed of the bucket and prevent excessive turning or instability caused by water flow impact, thereby improving the accuracy and continuity of sampling.

[0018] 3. As a magnetic switch, the reed switch has extremely high sensitivity and accuracy. In flow monitoring, when water flows through, it can cause changes in the magnetic field, thereby triggering the opening and closing of the reed switch. This direct physical action mechanism makes flow detection more accurate and can capture tiny flow changes.

[0019] 4. By dividing the water pipe into a sampling pipe and a drainage pipe, when the water flow is large, the sampling pipe and the drainage pipe can be flexibly switched during the sampling process through the action of the adjustment component to ensure that a certain amount of sediment can be sampled.

[0020] 5. The electric push rod and the sampling tube are arranged above the drain pipe, so that the adjustment component can smoothly switch the sampling tube and the drain pipe.

[0021] 6. By driving the rotary disc to rotate through the rotating assembly, multiple sampling bottles can be automatically rotated for sampling, which improves sampling efficiency and reduces the need for manual operation and error rate. A weighing sensor is installed under each sampling bottle, which can monitor the weight change of the sampling bottle in real time and accurately, ensuring the accuracy and reliability of sampling.

[0022] 7. The gear-shaped design of the sampling bottle fixing plate can tightly engage or fix the sampling bottle, preventing the sampling bottle from shaking or falling off during the rotation of the rotating disc, ensuring the smooth progress of the sampling process and avoiding errors or accidents caused by changes in the position of the sampling bottle. The combination of the gear-shaped edge and the sampling bottle makes the position of each sampling bottle on the rotating disc more clear and fixed, which helps operators quickly and accurately find and replace the sampling bottle, improving operating efficiency.

[0023] 8. The motor is directly installed at the bottom of the base plate and connected to the rotating disc through the drive end, ensuring the high efficiency of power transmission and providing stable power support for the sampling process.

[0024] 9. The three-color alarm light can instantly and intuitively reflect the current status of the sampling bottle, such as empty bottle, full bottle, abnormality or failure, etc. The operator only needs to observe the color changes of the alarm light to quickly understand the status of the sampling bottle and take corresponding measures in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 An overall schematic diagram of an automatic runoff sediment sampling mechanism provided by the present invention; Figure 2 A schematic diagram of an adjustment component in an automatic runoff sediment sampling mechanism provided by the present invention; Figure 3 A schematic diagram of a sampling component in an automatic runoff sediment sampling mechanism provided by the present invention; Figure 4 A schematic diagram of a sampling component in an automatic runoff sediment sampling mechanism provided by the present invention; Among them: 1. Tipping bucket flowmeter; 2. Cabinet; 3. Electrical box; 4. Water outlet pipe; 5. Fomar wheel; 6. Sampling bottle; 7. Rotating platform; 8. Push rod water inlet pipe; 9. Adjustment component; 901. Electric push rod; 902. Rotating shaft; 10. Push rod fixing frame; 1001. Diversion cabin; 1002. Adjustment cabin; 11. Water pipe; 1101. Sampling tube; 1102. Drain pipe; 12. Sampling bottle bracket plate; 13. Sampling bottle fixing plate; 14. Weighing sensor; 15. Base plate; 16. Fixing bolts; 17. Motor; 18. Rotating disc; 19. Box; 20. Water inlet pipe; 21. Water baffle; 22. Tipping bucket; 23. Damper; 24. Tipping bucket bearing; 25. Reed switch; 26. Lock. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The fundamental cause of soil erosion is that water erodes the surface soil, causing serious damage to water and soil resources and land productivity, thus causing soil erosion problems, which seriously affect the living conditions of humans and other animals and plants.

[0034] At present, the monitoring of soil erosion is mainly completed through sediment sampling. Specifically, within the monitoring range, the target runoff area is selected, and the water flow in the runoff area is sampled through sampling equipment. The sediment content is analyzed from the sampled water flow, thereby obtaining soil erosion data.

[0035] However, due to the high sediment content in the water flow, the existing sampling equipment is unable to adjust the sampling components according to the amount of sediment in the water flow, resulting in a large amount of sediment blocking the sampling channel, making sampling difficult and unable to obtain accurate data; secondly, most of the existing sampling equipment uses a peristaltic pump for water intake, which can easily cause the peristaltic pump to be damaged and require frequent maintenance, causing a sharp increase in sampling costs, which is not conducive to the normal development of sampling operations.

[0036] In order to solve the above technical defects, the inventor provides an automatic runoff sediment sampling mechanism.

[0037] The present invention is further described in detail below in conjunction with the accompanying drawings: like Figure 1-Figure 4 As shown, an embodiment of the present invention provides an automatic sampling mechanism for runoff sediment, comprising: a supporting device; a sampling assembly, which is arranged on the top of the supporting device, and a flow monitoring component is arranged in the sampling assembly; a sampling assembly, which is arranged inside the supporting device and is located below the sampling assembly and cooperates with the sampling assembly; A rotating assembly, one end of which is connected to the supporting device and the other end is connected to the bottom of the sampling assembly. The rotating assembly is used to drive the sampling assembly to rotate. A control device is electrically connected to the sampling assembly, the flow monitoring device and the rotating assembly. The flow monitoring device is used to measure the flow of runoff sediment so that the control device can adjust the state of the sampling assembly. The control device is provided with a control interface of the sampling mechanism, which includes a parameter page for the operation of the entire mechanism, a sampling time control interface, a sampling state switching interface and a sampling state interface. The sampling state interface is used to display "missing bottle", "empty bottle" and "full bottle" information. The electrical box 3 is also arranged on the top of the supporting device and is opposite to the sampling component; wherein, when sampling the runoff sediment, the sampling component is aligned with the direction of the water flow in the runoff area, so that the water flow can smoothly flow into the sampling component through the sampling component, and in the process of the water flow entering the sampling component, the flow monitoring component in the sampling component can count the amount of runoff, and the control device adjusts the state of the sampling component according to the amount of runoff, which solves the technical defects of excessive water flow and excessive sediment content carried, causing blockage of the collection channel and affecting the sampling operation; secondly, the mechanism does not need to use a peristaltic pump to operate during the sampling process, thereby reducing the sampling cost.

[0038] like Figure 1 and Figure 2 As shown, the sampling assembly, that is, the tipping bucket flowmeter 1, includes a box body 19, which is arranged at the top of one side of the supporting device. The box body 19 is used to allow water and sediment to enter. The bottom of the box body 19 is the inner wall of the vertebral body, which is polished or painted (waxed or painted with high-smooth paint) to reduce the deposition and attachment on the inner wall surface after the runoff is emptied (mainly sediment hanging on the wall, which will seriously affect the subsequent measurement accuracy).

[0039] The flow monitoring device is arranged on the top of the box 19, and can detect the size of the runoff in real time; a bucket 22, a damper 23 and a water baffle 21 are arranged in the box 19, and a lock 26 is arranged on the outside of the box 19; the bucket 22 is rotatably connected to the box 19 through a bucket bearing 24, and the damper 23 is arranged above the bucket 22. The bucket 22 is rotatably connected to the box 19 through the bucket bearing 24. The use of the damper 23 ensures the stability and reliability of the bucket 22 when receiving water flow. The damper 23 can effectively slow down the turning speed of the bucket 22, prevent excessive turning or instability caused by water flow impact, thereby improving the accuracy and continuity of sampling. A water inlet pipe 20 is provided on the outside of the box body 19. One end of the water inlet pipe 20 is connected to the inside of the box body 19, and the other end is connected to the push rod water inlet pipe 8. The end of the push rod water inlet pipe 8 is connected to the push rod fixing frame 10. The push rod fixing frame 10 is installed with an adjustment component 9 and a water pipe 11. One end of the water pipe 11 is rotatably connected to the push rod fixing frame 10, and the other end is rotatably connected to the adjustment component 9. The water pipe 11 cooperates with the sampling component. When the water flow rate is too large, the control device receives a feedback signal and controls the adjustment component 9 to start the operation. The adjustment component 9 adjusts the water pipe 11 according to the operation instruction issued by the control device, so that the water pipe 11 discharges the water flow. Figure 4 As shown, the flow monitoring component is preferably a reed switch 25. As a magnetic switch, the reed switch 25 has extremely high sensitivity and accuracy. In flow monitoring, when water flows through, it can cause changes in the magnetic field, thereby triggering the opening and closing action of the reed switch 25. This direct physical action mechanism makes flow detection more accurate and can capture tiny flow changes.

[0040] like Figure 2As shown, the water pipe 11 includes a sampling tube 1101 and a drainage pipe 1102, the push rod fixing frame 10 includes a fixing frame body, a diversion cabin 1001 and an adjusting cabin 1002, the diversion cabin 1001 is arranged on the fixing frame body, and the adjusting cabin 1002 is rotatably connected to the diversion cabin 1001; the end of the push rod water inlet pipe 8 is installed on the fixing frame body and extends into the diversion cabin 1001, one end of the sampling tube 1101 and the drainage pipe 1102 are connected to the adjusting cabin 1002, and the other ends of the sampling tube 1101 and the drainage pipe 1102 are far away from each other; the adjusting component 9 includes an electric push rod 901 and a rotating shaft 902, the rotating shaft 902 is arranged on the outside of the drainage pipe 1102, and the end of the electric push rod 901 cooperates with the rotating shaft 902. By dividing the water pipe 11 into a sampling pipe 1101 and a drain pipe 1102, the drain pipe 1102 is connected to the water outlet pipe 4 to discharge the water flow; when the water flow rate is large, the sampling pipe 1101 and the drain pipe 1102 can be flexibly switched during the sampling process through the action of the adjustment component 9 to ensure that a certain amount of sediment can be sampled. Secondly, the electric push rod 901 and the sampling pipe 1101 are arranged above the drain pipe 1102, so that the adjustment component 9 can smoothly switch the sampling pipe 1101 and the drain pipe 1102; after the runoff water sample flows into the sampling bottle 6 through the sampling tube 1101 and the sampling bottle 6 completes the sampling, the control device controls the electric push rod 901 to switch to the working state of the drain pipe 1102.

[0041] like Figure 3 As shown, the sampling assembly includes a rotating disc 18, and the rotating assembly is arranged at the bottom of the rotating disc 18. A plurality of weighing sensors 14 are arranged on the outer circumference of the rotating disc 18. A sampling bottle support plate 12 is arranged on the plurality of weighing sensors 14. The sampling bottle support plate 12 is provided with a sampling bottle 6. The rotating disc 18 is driven to rotate by the rotating assembly, so that the automatic rotation sampling of the plurality of sampling bottles 6 can be realized. The last sampling bottle 6 that has completed sampling is weighed by the weighing sensor 14 and the data is recorded, thereby improving the sampling efficiency and reducing the need for manual operation and the error rate. A weighing sensor 14 is arranged under each sampling bottle 6, which can monitor the weight change of the sampling bottle 6 in real time and accurately, thereby ensuring the accuracy and reliability of the sampling. A sampling bottle fixing plate 13 is installed on the top of the rotating disc 18. The sampling bottle fixing plate 13 is gear-shaped, and the edge of the sampling bottle fixing plate 13 cooperates with the sampling bottle 6. The gear-shaped design of the sampling bottle fixing plate 13 can tightly engage or fix the sampling bottle 6, preventing the sampling bottle 6 from shaking or falling off during the rotation of the rotating disk 18, ensuring the smooth progress of the sampling process and avoiding errors or accidents caused by the position change of the sampling bottle 6; secondly, the cooperation between the gear-shaped edge and the sampling bottle 6 makes the position of each sampling bottle 6 on the rotating disk 18 more clear and fixed, which helps the operator to quickly and accurately find and replace the sampling bottle 6, thereby improving the operating efficiency. Figure 3As shown, the rotating assembly includes a base plate 15, which is detachably connected to a rotating disc 18. A motor 17 is installed at the bottom of the base plate 15 through a fixing bolt 16, and the driving end of the motor 17 is connected to the rotating disc 18. In this embodiment, a three-color alarm light is provided on the outside of the sampling bottle 6. The three-color alarm light can instantly and intuitively reflect the current state of the sampling bottle 6, such as empty bottle, full bottle, abnormality or failure, etc. The operator can quickly understand the state of the sampling bottle 6 by observing the color change of the alarm light, so as to take corresponding measures in time. Finally, in this embodiment, the supporting device includes a cabinet 2, and the sampling assembly, the rotating assembly and the control device are all arranged in the cabinet 2. The four wheels 5 are arranged around the bottom of the cabinet 2. An emergency stop device is installed at the cabinet door. When the operator opens the cabinet door, the rotating platform 7 stops rotating. In order to take out the sampling bottle 6 in an emergency, an emergency stop foot switch is also provided. The operation of the sampling mechanism can be stopped urgently by stepping on it, and the sampling bottle 6 can be taken out.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit its protection scope. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that after reading the present invention, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the invention, but these changes, modifications or equivalent substitutions are all within the protection scope of the pending claims of the invention.

Claims

1. A runoff sediment automatic sampling mechanism, characterized in that: include: Support device; A sampling assembly is arranged on the top of the supporting device, and a flow monitoring component is arranged in the sampling assembly; A sampling assembly is arranged inside the supporting device and below the sampling assembly, and cooperates with the sampling assembly; A rotating assembly, one end of which is connected to the supporting device and the other end of which is connected to the bottom of the sampling assembly, and the rotating assembly is used to drive the sampling assembly to rotate; A control device electrically connected to the sampling assembly, the flow monitoring component and the rotating assembly; Wherein, when sampling runoff sediment, the flow monitoring component is used to monitor the flow of the runoff sediment, so that the control device can adjust the state of the sampling component.

2. The sampling mechanism according to claim 1, characterized in that: The sampling assembly comprises a box (19), the box (19) being arranged at the top of one side of the supporting device, and the flow monitoring component being arranged at the top of the box (19); a tipping bucket (22) and a damper (23) are arranged in the box (19), the tipping bucket (22) being rotatably connected to the box (19) via a tipping bucket bearing (24), and the damper (23) being arranged above the tipping bucket (22); A water inlet pipe (20) is provided on the outside of the box body (19), one end of the water inlet pipe (20) is connected to the inside of the box body (19), and the other end is connected to the push rod water inlet pipe (8), the end of the push rod water inlet pipe (8) is connected to the push rod fixing frame (10), and the push rod fixing frame (10) is installed with an adjustment component (9) and a water pipe (11), one end of the water pipe (11) is rotatably connected to the push rod fixing frame (10), and the other end is rotatably connected to the adjustment component (9), and the water pipe (11) cooperates with the sampling component.

3. The sampling mechanism according to claim 2, characterized in that: The flow monitoring component is a reed switch (25).

4. The sampling mechanism according to claim 2, characterized in that: The water pipe (11) comprises a sampling pipe (1101) and a drainage pipe (1102); the push rod fixing frame (10) comprises a fixing frame body, a flow guide chamber (1001) and a regulating chamber (1002); the flow guide chamber (1001) is arranged on the fixing frame body, and the regulating chamber (1002) is rotatably connected to the flow guide chamber (1001); The end of the push rod water inlet pipe (8) is mounted on the fixing frame body and extends into the diversion cabin (1001); one end of the sampling tube (1101) and the drainage pipe (1102) are both connected to the regulating cabin (1002); and the other ends of the sampling tube (1101) and the drainage pipe (1102) are separated from each other; The adjustment assembly (9) comprises an electric push rod (901) and a rotating shaft (902); the rotating shaft (902) is arranged outside the drainage pipe (1102); and the end of the electric push rod (901) cooperates with the rotating shaft (902).

5. The sampling mechanism according to claim 4, characterized in that: The electric push rod (901) and the sampling tube (1101) are both located above the drainage pipe (1102).

6. The sampling mechanism according to claim 1, characterized in that: The sampling assembly comprises a rotating disc (18), the rotating assembly is arranged at the bottom of the rotating disc (18), a plurality of weighing sensors (14) are arranged on the outer circumference of the rotating disc (18), a sampling bottle support plate (12) is arranged on the plurality of weighing sensors (14), and a sampling bottle (6) is installed in the sampling bottle support plate (12).

7. The sampling mechanism according to claim 6, characterized in that: A sampling bottle fixing plate (13) is installed on the top of the rotating disc (18); the sampling bottle fixing plate (13) is gear-shaped, and the edge of the sampling bottle fixing plate (13) cooperates with the sampling bottle (6).

8. The sampling mechanism according to claim 6, characterized in that: The rotating assembly comprises a base plate (15), the base plate (15) being detachably connected to a rotating disc (18), a motor (17) being mounted at the bottom of the base plate (15), and a driving end of the motor (17) being connected to the rotating disc (18).

9. The sampling mechanism according to claim 6 or 7, characterized in that: A three-color warning light is provided on the outside of the sampling bottle (6).

10. The sampling mechanism according to claim 1, characterized in that: The supporting device comprises a cabinet (2), the sampling assembly, the rotating assembly and the control device are all arranged in the cabinet (2), and the bottom of the cabinet (2) is surrounded by a Forma wheel (5).

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