Water quality monitoring device with automatic cleaning function

Abstract

The invention relates to the technical field of water quality monitoring, in particular to a water quality monitoring device with an automatic cleaning function, which comprises a floating main body, the floating main body is provided with a sampling device main body and a lifting mechanism for driving the sampling device main body to lift, and the sampling device main body comprises a sampling cylinder. A water quality sensor and a sample collecting assembly are arranged in the sampling barrel, the sample collecting assembly is used for collecting a water sample, and a cleaning assembly used for automatically cleaning the surface of the sampling barrel is arranged on the sampling barrel. The water quality monitoring device has the advantages that the accuracy of the water quality monitoring device during water sample collection is improved, and therefore the reliability of monitoring data of the water quality monitoring device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality monitoring, and in particular to a water quality monitoring device with an automatic cleaning function. Background Art

[0002] Water quality monitoring technology is used to monitor and measure the types of pollutants in water bodies, the concentrations of various pollutants and their changing trends, and to evaluate water quality. It has been widely used in environmental protection, water resources management and other fields. In order to obtain more accurate water quality data, it is often necessary to sample and monitor water bodies at different depths. In the prior art, water quality monitoring devices that can be raised and lowered in the water body are often set up to capture water samples at different depths.

[0003] When using a water quality monitoring device to capture and collect water samples at different depths in natural waters or sewage treatment facilities, since the water quality monitoring device needs to be raised and lowered in the water body during the sampling process, plankton and impurities in the water body may adhere to the surface of the water quality monitoring device during this process, thereby affecting the accuracy of subsequent sampling by the water quality monitoring device and easily affecting the reliability of the monitoring data. Summary of the invention

[0004] In order to improve the accuracy of a water quality monitoring device when collecting water samples, thereby improving the reliability of monitoring data of the water quality monitoring device, the present application provides a water quality monitoring device with an automatic cleaning function.

[0005] The present application provides a water quality monitoring device with automatic cleaning function, which adopts the following technical solution: A water quality monitoring device with an automatic cleaning function comprises a floating body, on which a sampling device body and a lifting mechanism for driving the sampling device body to be lifted and lowered are arranged, the sampling device body comprises a sampling cylinder, inside of which a water quality sensor and a sample collection component are arranged, the sample collection component is used to collect water samples, and the sampling cylinder is provided with a cleaning component for automatically cleaning the surface of the sampling cylinder.

[0006] By adopting the above technical solution, the cleaning component helps to automatically clean the surface of the sampling tube, helps to remove plankton and impurities attached to the surface of the sampling tube, thereby helping to improve the accuracy of the water quality monitoring device when collecting water samples, and further helps to improve the reliability of the monitoring data of the water quality monitoring device. The sample collection component helps to collect water samples, the water quality sensor helps to detect various indicators of the water sample, and the lifting mechanism helps to drive the sampling tube to rise and fall in the water body, thereby helping to collect water samples at different depths.

[0007] In a specific possible implementation scheme, the cleaning assembly includes a driving motor, a rotating frame and a cleaning brush. The driving motor is arranged in the sampling cylinder, and the output shaft of the driving motor extends through the sampling cylinder. The rotating frame is arranged on the output shaft of the driving motor, and the cleaning brush is rotatably arranged on the rotating frame and contacts with the surface of the sampling cylinder.

[0008] By adopting the above technical solution, the driving motor helps to drive the rotating frame to rotate, thereby helping to drive the cleaning brush to rotate, and helping to use the rotation of the cleaning brush to remove plankton and impurities attached to the surface of the sampling tube, thereby helping to improve the accuracy of the water quality monitoring device when collecting water samples, and further helping to improve the reliability of the monitoring data of the water quality monitoring device.

[0009] In a specific implementation scheme, a stirring paddle and a guide tube are provided on the output shaft of the driving motor, the stirring paddle is used to stir the water body and generate water flow, and the guide tube is located on the circumferential periphery of the stirring paddle and is used to guide the flow direction of the water flow.

[0010] By adopting the above technical scheme, the driving motor is used to help drive the agitator to rotate, thereby helping to use the agitator to stir the water body and generate water flow, and the guide tube is used to help guide the generated water flow to flow toward the cleaning brush, thereby helping to use the water flow to carry away plankton and impurities that have fallen from the surface of the sampling tube, thereby helping to prevent the plankton and impurities from attaching to the surface of the sampling tube again, further improving the accuracy of the water quality monitoring device when collecting water samples, and further improving the reliability of the monitoring data of the water quality monitoring device.

[0011] In a specific possible implementation scheme, a storage box for placing cleaning agent is provided inside the sampling cylinder, an infusion pipeline is fixedly connected to the storage box, an electromagnetic valve is provided on the infusion pipeline, a liquid outlet is provided on the side wall of the sampling cylinder, the position of the liquid outlet is lower than the position of the storage box, and the liquid outlet is connected to an end of the infusion pipeline away from the storage box.

[0012] By adopting the above technical solution, when the drive motor rotates, the solenoid valve opens, and the cleaning agent inside the storage box flows out from the liquid outlet along the infusion pipe, thereby helping to clean the surface of the sampling cylinder with a cleaning brush, helping to further improve the cleaning effect of the surface of the sampling cylinder, further improving the accuracy of the water quality monitoring device when collecting water samples, and further improving the reliability of the monitoring data of the water quality monitoring device.

[0013] In a specific possible implementation manner, a cleanliness detector for detecting the cleanliness of the surface of the sampling cylinder is disposed inside the sampling cylinder, and the driving motor and the solenoid valve are both electrically connected to the cleanliness detector.

[0014] By adopting the above technical solution, a cleanliness detector is used to help monitor the cleanliness of the surface of the sampling cylinder. When the cleanliness of the surface of the sampling cylinder is lower than a set value, the cleanliness detector helps to transmit signals to the drive motor and the solenoid valve, thereby helping to clean the surface of the sampling cylinder.

[0015] In a specific feasible implementation scheme, the lifting mechanism includes a lifting guide rod, which is arranged on the floating body and is slidably connected to the floating body. A lifting frame is fixedly arranged on a section of the lifting guide rod below the floating body, and the sampling cylinder is arranged on the lifting frame. The lifting mechanism also includes a lifting assembly, which is arranged on the floating body and is used to drive the lifting guide rod to lift and lower.

[0016] By adopting the above technical solution, the lifting assembly helps to drive the lifting guide rod and the lifting frame to move up and down, thereby helping to drive the sampling tube to move up and down in the water body, and further helping to use the sampling tube to collect water samples at different depths.

[0017] In a specific feasible implementation scheme, the lifting assembly includes a motor, a transmission gear and a transmission rack. The motor is arranged on the floating body, the transmission gear is arranged at the output end of the motor, and a mounting groove is arranged on the lifting guide rod along its own axial direction. The transmission rack is arranged in the mounting groove, and the transmission rack is meshed with the transmission gear.

[0018] By adopting the above technical solution, the operation of the motor helps to drive the transmission gear to rotate, which helps to drive the transmission rack and the lifting guide rod to rise and fall, and then helps to drive the lifting frame and the sampling tube to rise and fall in the water body, which helps to use the sampling tube to collect water samples at different depths.

[0019] In a specific feasible implementation scheme, a water inlet is provided on the side wall of the sampling tube, a water storage bucket is provided inside the sampling tube, the water quality sensor is provided on the inner wall of the water storage bucket, the water storage bucket is provided with a water inlet pipe connected to the water inlet, and a pipeline valve is provided on the water inlet pipe.

[0020] By adopting the above technical solution, when the sampling tube moves to the sampling depth, the pipeline valve opens, and the water sample enters the water storage bucket through the water inlet and the water inlet pipeline. The use of water quality sensors helps to detect various indicators of the water sample.

[0021] In a specific feasible implementation scheme, the sample collection assembly includes a rotating motor, a rotating seat, an electric push rod and multiple sample collection bottles, the rotating motor is arranged on the inner bottom wall of the sampling barrel, the rotating seat is arranged on the output shaft of the rotating motor, the rotating seat is provided with multiple placement slots, the sample collection bottles are movably placed in the placement slots, the sample collection bottle includes a bottle body and a rubber stopper, the rubber stopper is clamped and arranged at the bottle mouth of the bottle body, and the rubber stopper is provided with a socket for the bottom of the water storage bucket to be inserted, the electric push rod is arranged on the inner bottom wall of the sampling barrel and is located below the bottom of the water storage bucket, the rotating seat is provided with a through hole connected to the placement slot, and the through hole is used for the output end of the electric push rod to be inserted.

[0022] By adopting the above technical solution, when the water sample enters the water storage bucket, the rotating seat is driven to rotate by the rotating motor, thereby driving the sample collection bottle to move to the bottom of the bottom end of the water storage bucket, and then the output end of the electric push rod is used to lift the sample collection bottle through the through hole, thereby helping to insert the bottom end of the water storage bucket into the sample collection bottle, making it convenient to send the water sample entering the water storage bucket into the sample collection bottle, thereby completing the collection of the water sample.

[0023] In a specific embodiment, a self-cleaning coating is provided on the outer wall of the sampling tube, and the self-cleaning coating includes a dense paint film bottom layer and a hydrophobic surface layer. The dense paint film bottom layer is arranged on the outer wall surface of the sampling tube, and the hydrophobic surface layer is arranged on the outer layer of the dense paint film bottom layer.

[0024] By adopting the above technical solution, the setting of the self-cleaning coating helps to avoid plankton and impurities from adhering to the surface of the sampling tube as much as possible, thereby helping to improve the accuracy of the water quality monitoring device when collecting water samples, and further helping to improve the reliability of the monitoring data of the water quality monitoring device.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present application provides a cleaning component which helps to automatically clean the surface of the sampling tube, and helps to remove plankton and impurities attached to the surface of the sampling tube, thereby helping to improve the accuracy of the water quality monitoring device when collecting water samples, and further helping to improve the reliability of the monitoring data of the water quality monitoring device.

[0026] 2. In the present application, an agitator and a guide tube are arranged. The agitator helps to stir the water body under the drive of a driving motor and generate water flow at the same time. The guide tube helps to guide the water flow toward the cleaning brush, thereby helping to use the water flow to carry away plankton and impurities that have fallen from the surface of the sampling tube, thereby helping to prevent the plankton and impurities from attaching to the surface of the sampling tube again, further improving the accuracy of the water quality monitoring device when collecting water samples, and further improving the reliability of the monitoring data of the water quality monitoring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0028] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0029] Figure 3 It is a schematic diagram showing the specific structure of the cleaning component.

[0030] Figure 4 It is a cross-sectional view showing the specific structure of the main body of the sampling device.

[0031] Figure 5 It is a schematic diagram showing the placement relationship between the sample collection bottle and the rotating seat.

[0032] Figure 6 It is a schematic diagram showing the specific structure of the self-cleaning coating.

[0033] Description of reference numerals: 1. floating body; 2. sampling tube; 3. water quality sensor; 4. sample collection assembly; 41. rotating motor; 42. rotating seat; 43. electric push rod; 44. sample collection bottle; 441. bottle body; 442. rubber bottle stopper; 5. cleaning assembly; 51. driving motor; 52. rotating frame; 53. cleaning brush; 6. stirring paddle; 7. guide tube; 8. storage box; 9. infusion pipeline; 10. solenoid valve; 11 , liquid outlet; 12, cleanliness detector; 13, lifting guide rod; 131, mounting slot; 14, lifting frame; 15, lifting assembly; 151, motor; 152, transmission gear; 153, transmission rack; 16, water inlet; 17, water storage bucket; 18, water inlet pipe; 19, pipe valve; 20, placement slot; 21, socket; 22, through hole; 23, self-cleaning coating; 231, dense paint film bottom layer; 232, hydrophobic surface layer. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with the accompanying drawings.

[0035] The present application discloses a water quality monitoring device with automatic cleaning function. Figure 1 and Figure 2, including a floating body 1, on which a lifting mechanism is arranged, the lifting mechanism includes a plurality of lifting guide rods 13, the plurality of lifting guide rods 13 are vertically arranged and slidably installed at the four corners of the floating body 1, a lifting frame 14 arranged horizontally is installed on a section of the plurality of lifting guide rods 13 located below the floating body 1, the lifting frame 14 is provided with a sampling device body, and the lifting mechanism also includes a plurality of lifting components 15 arranged on the floating body 1.

[0036] Reference Figure 1 and Figure 2 Each lifting assembly 15 includes a motor 151, a transmission gear 152 and a transmission rack 153. The motor 151 is fixedly mounted on the floating body 1, and the transmission gear 152 is fixedly connected to the output end of the motor 151. A mounting groove 131 is opened on the circumferential side wall of the lifting guide rod 13 along its own axial direction. The transmission rack 153 is fixedly mounted in the mounting groove 131, and the transmission rack 153 is meshed with the transmission gear 152.

[0037] Reference Figure 1 and Figure 2 When adjusting the depth of the sampling device body, multiple motors 151 operate synchronously, thereby driving multiple transmission gears 152 to rotate synchronously, which in turn helps to drive multiple transmission racks 153 and multiple lifting guide rods 13 to rise and fall synchronously. The lifting and lowering of the multiple lifting guide rods 13 drives the lifting frame 14 and the sampling device body to rise and fall in the water body, which helps to collect water samples at different depths.

[0038] Reference Figure 3 and Figure 4 The sampling device body includes a sampling tube 2, a water storage bucket 17 is fixedly installed inside the sampling tube 2, a water quality sensor 3 is fixedly installed on the inner top wall of the water storage bucket 17, a water inlet pipe 18 is fixedly connected to the water storage bucket 17, a water inlet 16 is penetrated through the side wall of the sampling tube 2, and the end of the water inlet pipe 18 away from the water storage bucket 17 is fixedly connected to the water inlet 16, and a pipeline valve 19 is fixedly installed on the end of the water inlet pipe 18 close to the water inlet 16.

[0039] Reference Figure 4 and Figure 5, a sample collection assembly 4 is arranged inside the sampling tube 2, and the sample collection assembly 4 includes a rotating motor 41, a rotating seat 42, an electric push rod 43 and a plurality of sample collection bottles 44. The rotating motor 41 is fixedly mounted on the inner bottom wall of the sampling tube 2 and the output shaft of the rotating motor 41 extends upward. The rotating seat 42 is fixedly mounted on the output shaft of the rotating motor 41. A plurality of placement slots 20 are provided on the top surface of the rotating seat 42. The number of the placement slots 20 is the same as the number of the sample collection bottles 44, and the plurality of placement slots 20 are arranged in a circular array along the central axis of the rotating seat 42. Each sample collection bottle 44 is snap-fitted and placed in a placement slot 20. In this embodiment, the sample collection bottle 44 includes a bottle body 441 and a rubber bottle stopper 442. The rubber bottle stopper 442 is snap-fitted and placed at the bottle mouth of the bottle body 441, and a socket 21 is provided on the rubber bottle stopper 442. The electric push rod 43 is fixedly mounted on the inner bottom wall of the sampling tube 2 and the output end of the electric push rod 43 extends upward. The electric push rod 43 is located directly below the bottom end of the water storage bucket 17. A through hole 22 is opened on the rotating seat 42. The through hole 22 is connected to the placement groove 20 and is used for the output end of the electric push rod 43 to be inserted.

[0040] Reference Figure 4 and Figure 5 When the sampling tube 2 moves to the sampling depth, the rotating motor 41 is started to drive the rotating seat 42 to rotate, thereby driving the sample collection bottle 44 to move to the bottom of the water storage bucket 17, and the electric push rod 43 is started, so that the output end of the electric push rod 43 passes through the through hole 22 to lift the sample collection bottle 44, and then the bottom of the water storage bucket 17 is inserted into the sample collection bottle 44. The pipeline valve 19 is opened to allow the water sample to enter the water storage bucket 17 through the water inlet 16 and the water inlet pipeline 18. At the same time, the water quality sensor 3 detects various indicators of the water sample. After passing through the water storage bucket 17, the water sample enters the sample collection bottle 44, thereby completing the collection of the water sample.

[0041] Reference Figure 3 and Figure 4 A cleanliness detector 12 is fixedly mounted on the inner top wall of the sampling cylinder 2. A cleaning assembly 5 is provided on the sampling cylinder 2, and the cleaning assembly 5 includes a driving motor 51, a rotating frame 52 and a cleaning brush 53. The driving motor 51 is fixedly mounted on the inner top wall of the sampling cylinder 2, the driving motor 51 is electrically connected to the cleanliness detector 12, and the output shaft of the driving motor 51 extends upward through the sampling cylinder 2, the rotating frame 52 is fixedly connected to the output shaft of the driving motor 51, in this embodiment, two cleaning brushes 53 are provided, and the two cleaning brushes 53 are rotatably mounted on both ends of the rotating frame 52, and each cleaning brush 53 is in contact with the surface of the sampling cylinder 2.

[0042] Reference Figure 3 and Figure 4The cleanliness of the surface of the sampling tube 2 is monitored in real time through the cleanliness detector 12. When the cleanliness of the surface of the sampling tube 2 is lower than the set value, the cleanliness detector 12 transmits a signal to the driving motor 51, and the driving motor 51 operates, driving the rotating frame 52 to rotate, thereby driving the two cleaning brushes 53 to rotate around the sampling tube 2. The rotation of the two cleaning brushes 53 is used to remove plankton and impurities attached to the surface of the sampling tube 2, thereby helping to improve the accuracy of the water quality monitoring device when collecting water samples, and further helping to improve the reliability of the monitoring data of the water quality monitoring device.

[0043] Reference Figure 3 A stirring paddle 6 is fixedly mounted on the top of the output shaft of the driving motor 51, and a guide tube 7 is fixedly mounted on the stirring paddle 6, and the guide tube 7 is located at the circumferential periphery of the stirring paddle 6. When the driving motor 51 is running, the stirring paddle 6 rotates synchronously driven by the output shaft of the driving motor 51, so that the stirring paddle 6 stirs the water body while rotating, and generates water flow in the stirring process. The generated water flow flows toward the cleaning brush 53 under the guidance of the guide tube 7, so that the plankton and impurities falling from the surface of the sampling tube 2 are taken away by the water flow, and then it helps to prevent the plankton and impurities from attaching to the surface of the sampling tube 2 again, further improving the accuracy of the water quality monitoring device when collecting water samples, and further improving the reliability of the monitoring data of the water quality monitoring device.

[0044] Reference Figure 4 A storage box 8 is fixedly installed on the inner top wall of the sampling cylinder 2, and a cleaning agent is placed inside the storage box 8. The bottom of the storage box 8 is fixedly connected to an infusion pipe 9. A liquid outlet 11 is opened through the side wall of the sampling cylinder 2. The position of the liquid outlet 11 is lower than that of the storage box 8, and the end of the infusion pipe 9 away from the storage box 8 is connected to the liquid outlet 11. An electromagnetic valve 10 is fixedly installed on the end of the infusion pipe 9 close to the liquid outlet 11, and the electromagnetic valve 10 is electrically connected to the cleanliness detector 12.

[0045] Reference Figure 4 When the cleanliness of the surface of the sampling cylinder 2 is lower than the set value, the cleanliness detector 12 transmits a signal to the solenoid valve 10, the solenoid valve 10 opens, and the cleaning agent inside the storage box 8 flows out from the liquid outlet 11 along the infusion pipe 9, thereby helping to cooperate with the cleaning brush 53 to clean the surface of the sampling cylinder 2, which helps to further improve the cleaning effect of the surface of the sampling cylinder 2, further improves the accuracy of the water quality monitoring device when collecting water samples, and further improves the reliability of the monitoring data of the water quality monitoring device.

[0046] Reference Figure 6The outer wall of the sampling tube 2 is coated with a self-cleaning coating 23. In this embodiment, the self-cleaning coating 23 includes a dense paint film bottom layer 231 and a hydrophobic surface layer 232. The dense paint film bottom layer 231 is coated on the outer wall surface of the sampling tube 2, and the hydrophobic surface layer 232 is coated on the outer layer of the dense paint film bottom layer 231. The hydrophobic surface layer 232 helps to prevent plankton and impurities from adhering to the surface of the sampling tube 2 as much as possible, thereby helping to improve the accuracy of the water quality monitoring device when collecting water samples, and further helping to improve the reliability of the monitoring data of the water quality monitoring device.

[0047] The implementation principle of the embodiment of the present application is: the cleanliness of the surface of the sampling cylinder 2 is monitored in real time by the cleanliness detector 12. When the cleanliness of the surface of the sampling cylinder 2 is lower than the set value, the cleanliness detector 12 transmits a signal to the drive motor 51, and the drive motor 51 operates, driving the rotating frame 52 to rotate, thereby driving the two cleaning brushes 53 to rotate around the sampling cylinder 2, and utilizing the rotation of the two cleaning brushes 53 to remove plankton and impurities attached to the surface of the sampling cylinder 2, thereby helping to improve the accuracy of the water quality monitoring device when collecting water samples, and further helping to improve the reliability of the monitoring data of the water quality monitoring device.

[0048] At the same time, the cleanliness detector 12 transmits a signal to the solenoid valve 10, the solenoid valve 10 opens, and the cleaning agent inside the storage box 8 flows out from the liquid outlet 11 along the infusion pipe 9, thereby helping to cooperate with the cleaning brush 53 to clean the surface of the sampling tube 2, which helps to further improve the cleaning effect of the surface of the sampling tube 2, further improves the accuracy of the water quality monitoring device when collecting water samples, and further improves the reliability of the monitoring data of the water quality monitoring device.

[0049] When the drive motor 51 is running, the stirring paddle 6 rotates synchronously driven by the output shaft of the drive motor 51, so that the stirring paddle 6 stirs the water body while rotating and generates water flow in the process of stirring. The generated water flow flows toward the cleaning brush 53 under the guidance of the guide tube 7, thereby helping to use the water flow to carry away plankton and impurities that have fallen from the surface of the sampling tube 2, and then helping to prevent the plankton and impurities from adhering to the surface of the sampling tube 2 again, further improving the accuracy of the water quality monitoring device when collecting water samples, and further improving the reliability of the monitoring data of the water quality monitoring device.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A water quality monitoring device with automatic cleaning function, characterized in that: The invention comprises a floating body (1), on which a sampling device body and a lifting mechanism for driving the sampling device body to be lifted and lowered are arranged, the sampling device body comprises a sampling cylinder (2), inside of which a water quality sensor (3) and a sample collection component (4) are arranged, the sample collection component (4) is used to collect water samples, and the sampling cylinder (2) is provided with a cleaning component (5) for automatically cleaning the surface of the sampling cylinder (2).

2. A water quality monitoring device with automatic cleaning function according to claim 1, characterized in that: The cleaning assembly (5) comprises a driving motor (51), a rotating frame (52) and a cleaning brush (53); the driving motor (51) is arranged in the sampling cylinder (2), and the output shaft of the driving motor (51) extends through the sampling cylinder (2); the rotating frame (52) is arranged on the output shaft of the driving motor (51); and the cleaning brush (53) is rotatably arranged on the rotating frame (52) and contacts the surface of the sampling cylinder (2).

3. A water quality monitoring device with automatic cleaning function according to claim 2, characterized in that: The output shaft of the driving motor (51) is provided with a stirring paddle (6) and a guide tube (7), wherein the stirring paddle (6) is used to stir the water body and generate a water flow, and the guide tube (7) is located on the circumferential periphery of the stirring paddle (6) and is used to direct the flow direction of the water flow.

4. The water quality monitoring device with automatic cleaning function according to claim 2, characterized in that: A storage box (8) for storing a cleaning agent is arranged inside the sampling cylinder (2); a liquid infusion pipeline (9) is fixedly connected to the storage box (8); a solenoid valve (10) is arranged on the liquid infusion pipeline (9); a liquid outlet (11) is arranged on the side wall of the sampling cylinder (2); the position of the liquid outlet (11) is lower than the position of the storage box (8), and the liquid outlet (11) is connected to an end of the liquid infusion pipeline (9) away from the storage box (8).

5. A water quality monitoring device with automatic cleaning function according to claim 4, characterized in that: A cleanliness detector (12) for detecting the cleanliness of the surface of the sampling cylinder (2) is arranged inside the sampling cylinder (2), and the driving motor (51) and the solenoid valve (10) are both electrically connected to the cleanliness detector (12).

6. The water quality monitoring device with automatic cleaning function according to claim 1, characterized in that: The lifting mechanism comprises a lifting guide rod (13), the lifting guide rod (13) is arranged on the floating body (1) through and is slidably connected to the floating body (1), a lifting frame (14) is fixedly arranged on a section of the lifting guide rod (13) below the floating body (1), the sampling cylinder (2) is arranged on the lifting frame (14), and the lifting mechanism also comprises a lifting component (15), the lifting component (15) is arranged on the floating body (1) and is used to drive the lifting guide rod (13) to be lifted and lowered.

7. A water quality monitoring device with automatic cleaning function according to claim 6, characterized in that: The lifting assembly (15) comprises a motor (151), a transmission gear (152) and a transmission rack (153); the motor (151) is arranged on the floating body (1); the transmission gear (152) is arranged at the output end of the motor (151); a mounting groove (131) is arranged on the lifting guide rod (13) along its axial direction; the transmission rack (153) is arranged in the mounting groove (131), and the transmission rack (153) is meshed with the transmission gear (152).

8. The water quality monitoring device with automatic cleaning function according to claim 1, characterized in that: A water inlet (16) is arranged on the side wall of the sampling tube (2), a water storage hopper (17) is arranged inside the sampling tube (2), the water quality sensor (3) is arranged on the inner wall of the water storage hopper (17), the water storage hopper (17) is provided with a water inlet pipe (18) connected with the water inlet (16), and the water inlet pipe (18) is provided with a pipe valve (19).

9. A water quality monitoring device with automatic cleaning function according to claim 8, characterized in that: The sample collection assembly (4) comprises a rotating motor (41), a rotating seat (42), an electric push rod (43) and a plurality of sample collection bottles (44); the rotating motor (41) is arranged on the inner bottom wall of the sampling tube (2); the rotating seat (42) is arranged on the output shaft of the rotating motor (41); a plurality of placement grooves (20) are arranged on the rotating seat (42); the sample collection bottles (44) are movably placed in the placement grooves (20); the sample collection bottles (44) comprise a bottle body (441) and a rubber bottle stopper ( 442), the rubber bottle stopper (442) is snap-fitted at the bottle mouth of the bottle body (441), and the rubber bottle stopper (442) is provided with a socket (21) for inserting the bottom of the water storage bucket (17), the electric push rod (43) is arranged on the inner bottom wall of the sampling cylinder (2) and is located below the bottom of the water storage bucket (17), and the rotating seat (42) is provided with a through hole (22) connected to the placement groove (20), and the through hole (22) is used for inserting the output end of the electric push rod (43).

10. The water quality monitoring device with automatic cleaning function according to claim 1, characterized in that: A self-cleaning coating (23) is provided on the outer wall of the sampling tube (2), and the self-cleaning coating (23) comprises a dense paint film bottom layer (231) and a hydrophobic surface layer (232), wherein the dense paint film bottom layer (231) is provided on the outer wall surface of the sampling tube (2), and the hydrophobic surface layer (232) is provided on the outer layer of the dense paint film bottom layer (231).

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