Sampling device with impurity removal function for water quality detection

Abstract

The utility model discloses a sampling device with an impurity removal function for water quality detection, and relates to the technical field of water quality detection. The sampling device with the impurity removal function for water quality detection comprises a sampling pipe, a water suction pump is slidably connected to the sampling pipe, a collecting mechanism is arranged on the sampling pipe, a moving device is arranged in the sampling pipe, the sampling pipe is fixedly connected with a shell through a water pipe, the collecting mechanism comprises a water blocking plate, and the water blocking plate is slidably connected with the inner wall of the shell. A filter plate is slidably connected to the inner wall of the shell, and a cleaning assembly is arranged above the filter plate. According to the sampling device with the impurity removal function for water quality detection, through the collection mechanism, collected water can be effectively filtered, and meanwhile, after enough water is collected, the device can prevent water flow from entering through a water blocking plate, so that a water suction pump cannot normally discharge water, and the water suction pump automatically stops working; and the effect of avoiding water resource waste is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water quality detection, in particular to a sampling device with impurity removal function for water quality detection. Background Art

[0002] Sampling devices with impurity removal for water quality testing are devices used to collect water samples and remove impurities. They are widely used in the field of water quality monitoring and analysis to obtain accurate and representative water samples and ensure that the samples are not interfered with by foreign substances.

[0003] A sampling device with a dewatering function for water quality testing disclosed in publication number CN217466341U comprises a bottom plate, a filter cartridge located on one side of the top of the bottom plate, and a water pump located on the side of the top of the bottom plate away from the filter cartridge, the bottom plate comprising a mounting block arranged on one side of the top of the bottom plate, a support plate is arranged at the bottom end of the outer side of the filter cartridge, a plurality of support rods are arranged on the outer side of the bottom of the support plate, a drain port is arranged at the bottom of the filter cartridge, a liquid outlet is arranged at the bottom of the outer side of the filter cartridge, and a card block is arranged at the middle position of the inner wall of the filter cartridge. The above application document prevents debris from entering the interior of the water pump through the filter head, thereby achieving a better dewatering effect, but the water pumping cannot be stopped in time, which may result in more troublesome subsequent processing work and easily waste water resources. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a sampling device with an impurity removal function for water quality testing, which solves the problems raised in the above background technology. To achieve the above purpose, the utility model is implemented through the following technical scheme: a sampling device with an impurity removal function for water quality testing, including a sampling tube, a water suction pump is slidably connected to the sampling tube, a collecting mechanism is arranged inside the water suction pump, a moving device is arranged inside the sampling tube, the sampling tube is fixedly connected to a shell through a water pipe, the interior of the shell is connected to the interior of the sampling tube through the interior of the water pipe, the collecting mechanism includes a water blocking plate, the water blocking plate is slidably connected to the inner wall of the shell, the water blocking plate is fixedly connected to an L-shaped rod, a trapezoidal block is slidably connected to the inner wall of the L-shaped rod, the trapezoidal block is elastically connected to the L-shaped rod through spring 2, and the lower outer wall of the L-shaped rod is fixedly connected to the water blocking plate. A spring three is fixedly connected thereto, a placing plate is slidably connected to the inner wall of the shell, a spring four is fixedly connected to the lower part of the placing plate, the spring four is fixedly connected to the bottom inner wall of the shell, the placing plate is movably connected to a water tank, a bayonet is provided on the outer wall of the water tank, a movable plate is slidably connected to the inner wall of the water tank, a fixed plate is fixedly connected to the inner wall of the water tank, a fixed block is fixedly connected to the inner wall of the water tank, a spring five is fixedly connected above the fixed block, one end of the spring five away from the fixed block is fixedly connected to the lower part of the movable plate, a filter plate is slidably connected to the inner wall of the shell, a control strip is fixedly connected to the lower part of the filter plate, and a cleaning component is arranged above the filter plate.

[0005] Preferably, through holes at different vertical positions are provided above the fixed plate and the movable plate, and the outer wall material of the fixed plate and the movable plate is silicone. By setting the through holes at different vertical positions, it is ensured that when the fixed plate contacts the movable plate, the upper part of the shell is in a closed state, and when the fixed plate is separated from the movable plate, the upper part of the shell is in an open and closed state. By setting the outer wall material of the fixed plate and the movable plate, it is ensured that the fixed plate contacts the movable plate and reaches a closed state, thereby ensuring that the expected effect can be achieved.

[0006] Preferably, the moving device includes a threaded rod, which is rotatably connected to the outer wall of the sampling tube, and a control block is threadedly connected to the threaded rod, and the control block is fixedly connected to the outer wall of the water suction pump. A baffle is slidably connected to the inner wall of the sampling tube, and an inclined groove is provided on the inner wall of the sampling tube. A spring 1 is fixedly connected to the inner wall of the sampling tube, and the spring 1 is fixedly connected to the baffle. A push plate is fixedly connected to the inner wall of the sampling tube. By rotating the threaded rod, the control block drives the water suction pump to move up and down, and the push plate drives the baffle when the water suction pump moves, so that the baffle moves inside the inclined groove, so that the baffle of the sampling tube close to the water suction pump is in an open state, and the other baffles are in a closed state, thereby ensuring that the water sucked by the water suction pump can enter the shell through the sampling tube, thereby completing the water extraction operation.

[0007] Preferably, the shape of the inclined groove is a groove that is vertical in the middle and inclined toward the inside of the sampling tube at the top and bottom. By setting the shape of the inclined groove, it is ensured that the baffle can move in the direction close to the inside of the sampling tube after moving upward and downward, so as to move to a position in a vertical plane different from the push plate, so that when the push plate moves to a certain position, the baffle can be separated from the control of the push plate and reset under the drive of spring 1.

[0008] Preferably, the cleaning component includes a motor, which is fixedly connected to the outer wall of the shell, and the output shaft of the motor is fixedly connected to a rotating rod, which passes through the inner wall of the shell and is rotatably connected to the inner wall of the shell, and the rotating rod is fixedly connected to a scraper. The motor is operated by turning on the power of the equipment, and the rotating rod is driven to rotate by the output shaft of the motor, so that the rotating rod drives the scraper to rotate during the rotation process, so that the scraper scrapes off impurities above the filter plate during the rotation process, thereby preventing the impurities from clogging the filter plate, thereby preventing the removed water from passing through the filter plate.

[0009] Preferably, the outer wall material of the scraper is rubber, and the scraper is in contact with the upper outer wall of the filter plate. By setting the material of the outer wall of the scraper, it is ensured that the scraper has the effect of scraping off impurities. By setting the contact between the scraper and the outer wall of the filter plate, it is ensured that the scraper can achieve the cleaning effect of the filter plate during movement.

[0010] The utility model provides a sampling device with impurity removal function for water quality detection.

[0011] Beneficial effects:

[0012] (1) The utility model provides a collecting mechanism to filter the sucked water through a filter plate, and drives the water tank downward by the gravity of the water. At the same time, the water tank is engaged with the L-shaped rod through the combined action of the spring 1, the trapezoidal block and the bayonet, so that after the water tank moves downward, the water blocking plate can be driven downward by the L-shaped rod, thereby blocking the water pipe, causing the water suction pump to stop working under the action of air pressure, thereby achieving the effect of an automatic closing device.

[0013] (2) The utility model sets a moving device and rotates the threaded rod so that the control block drives the water suction pump to move up and down, and drives the push plate to push the baffle when the water suction pump moves, so that the baffle moves inside the inclined groove, so that the baffle near the position of the sampling tube close to the water suction pump is in an open state, and the other baffles are in a closed state, thereby ensuring that the water sucked by the water suction pump can enter the shell through the sampling tube, thereby completing the water extraction operation.

[0014] (3) The utility model provides a cleaning component, turns on the power of the equipment to start the motor, and drives the rotating rod to rotate through the output shaft of the motor, so that the rotating rod drives the scraper to rotate during the rotation process, so that the scraper scrapes off the impurities above the filter plate during the rotation process, thereby preventing the impurities from clogging the filter plate, so that the water being taken out cannot pass through the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional appearance structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the sampling tube of the utility model;

[0017] Figure 3 For this utility model Figure 2 Schematic diagram of the structure of A;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the shell of the utility model;

[0019] Figure 5 For this utility model Figure 4 Schematic diagram of the structure of B.

[0020] In the figure: 1. sampling tube; 2. water suction pump; 3. collecting mechanism; 4. moving device; 5. water pipe; 6. shell; 31. water blocking plate; 32. L-shaped rod; 33. trapezoidal block; 34. spring two; 35. spring three; 36. placement plate; 37. spring four; 38. water storage tank; 39. bayonet; 310. moving plate; 311. fixed plate; 312. fixed block; 313. spring five; 314. filter plate; 316. cleaning assembly; 317. control strip; 41. threaded rod; 42. control block; 43. baffle; 44. inclined slot; 45. spring one; 46. push plate; 3161. motor; 3162. rotating rod; 3163. scraper. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Embodiment 1

[0023] See also Figure 1-5A sampling device with impurity removal function for water quality detection includes a sampling tube 1, a water suction pump 2 is slidably connected to the sampling tube 1, a water outlet is opened at one end of the water suction pump 2 close to the sampling tube 1, and the outer wall of the water suction pump 2 and the part outside the water outlet are in contact with the sampling tube 1, and the position of the water outlet and the arrangement of the outside being in contact with the sampling tube 1 ensure that the water sucked by the water suction pump 2 can enter the sampling tube 1 through the through hole opened on the sampling tube 1 to achieve the sampling effect, a collecting mechanism 3 is arranged inside the water suction pump 2, a moving device 4 is arranged inside the sampling tube 1, the sampling tube 1 is fixedly connected to a shell 6 through a water pipe 5, the interior of the shell 6 is communicated with the interior of the sampling tube 1 through the interior of the water pipe 5, and the collecting mechanism 3 includes a water blocking plate 31, and the water blocking plate 31 is connected to the inner wall of the shell 6. The water blocking plate 31 is fixedly connected with an L-shaped rod 32, and a trapezoidal block 33 is slidably connected on the inner wall of the L-shaped rod 32. The trapezoidal block 33 is elastically connected to the L-shaped rod 32 through a spring 2 34, and a spring 35 is fixedly connected to the outer wall below the L-shaped rod 32. A placement plate 36 is slidably connected to the inner wall of the shell 6, and a spring 4 37 is fixedly connected to the lower part of the placement plate 36. The spring 4 37 is fixedly connected to the bottom inner wall of the shell 6, and the placement plate 36 is movably connected to a water storage tank 38. A bayonet 39 is provided on the outer wall of the water storage tank 38, and a movable plate 310 is slidably connected to the inner wall of the water storage tank 38. A fixed plate 311 is fixedly connected to the inner wall of the water storage tank 38, and through holes in different vertical positions are provided above the fixed plate 311 and the movable plate 310, and The outer wall material of the fixed plate 311 and the movable plate 310 is made of silicone. By setting the through holes in different vertical positions, it is ensured that when the fixed plate 311 contacts the movable plate 310, the upper part of the shell 6 is in a closed state. When the fixed plate 311 is separated from the movable plate 310, the upper part of the shell 6 is in an open and closed state. By setting the outer wall material of the fixed plate 311 and the movable plate 310, it is ensured that the fixed plate 311 and the movable plate 310 can reach a closed state after contacting, thereby ensuring that the expected effect can be achieved. A fixed block 312 is fixedly connected to the inner wall of the water tank 38, and a spring 5 313 ​​is fixedly connected to the upper part of the fixed block 312. The end of the spring 5 313 ​​away from the fixed block 312 is fixedly connected to the lower part of the movable plate 310, and slides on the inner wall of the shell 6 A filter plate 314 is connected, and a control strip 317 is fixedly connected to the bottom of the filter plate 314. Through the setting of the control strip 317, when there is no water or less water in the water tank 38, the control strip 317 can contact the movable plate 310, so that the movable plate 310 moves downward, thereby ensuring that the water can smoothly enter the water tank 38 through the through holes opened on the movable plate 310 and the fixed plate 311, so as to achieve the effect of collecting water and completing sampling. A cleaning component 316 is arranged above the filter plate 314, and the absorbed water is filtered through the filter plate 314, and the water tank 38 is driven downward by the gravity of the water. At the same time, the water tank 38 is engaged with the L-shaped rod 32 through the joint action of the spring 1 45, the trapezoidal block 33 and the bayonet 39.As a result, after the water storage tank 38 moves downward, the water blocking plate 31 can be driven downward by the L-shaped rod 32, thereby blocking the water pipe 5, so that the water suction pump 2 stops working under the action of air pressure, achieving the effect of the automatic closing device.

[0024] When in use, the staff first opens the door of the shell 6, and then presses the placement plate 36 downward. When the placement plate 36 moves to the bottom, the staff places the water tank 38 on the placement plate 36 without releasing the placement plate 36, and makes the bayonet 39 be close to one side of the trapezoidal block 33. Then the staff stops pressing the placement plate 36. At this time, the placement plate 36 moves upward under the drive of the spring four 37, and drives the water tank 38 to move upward. When the water tank 38 moves to contact with the trapezoidal block 33, the inclined surface of the trapezoidal block 33 is squeezed by the outer wall of the water tank 38, so the trapezoidal block 33 moves toward the side away from the water tank 38 and squeezes the spring two 34. When the water tank 38 continues to move upward, until the bayonet 39 and the trapezoidal block 33 are in contact with each other, the inclined surface of the trapezoidal block 33 is squeezed by the outer wall of the water tank 38, the trapezoidal block 33 moves toward the side away from the water tank 38 and squeezes the spring two 34. After being in the same horizontal position, the trapezoidal block 33 moves toward the side close to the water tank 38 driven by the spring 2 34, thereby entering the bayonet 39. When the trapezoidal block 33 completely enters the bayonet 39, the upper surface of the water tank 38 just contacts the lower surface of the filter plate 314, and the control strip 317 squeezes the movable plate 310. Therefore, there is a gap between the movable plate 310 and the fixed plate 311 for enough water to enter. At this time, the staff starts the power supply of the equipment, so that the water suction pump 2 starts to absorb water, and moves the water suction pump 2 up and down through the moving device 4, so as to achieve the effect of absorbing water at different heights. When the absorbed water enters the shell 6 through the water pipe 5, the water enters the inner part of the water tank 38 after passing through the filter plate 314 under the action of gravity. When enough water enters the water tank 38, the water tank 38 moves downward under the action of gravity. Since the position of the water tank 38 close to the bayonet 39 is in contact with the right-angled side of the trapezoidal block 33 at this time, the trapezoidal block 33 cannot move toward the side away from the water tank 38. Therefore, the trapezoidal block 33 moves downward with the water tank 38 at this time. At the same time, when the trapezoidal block 33 moves downward, it drives the L-shaped rod 32 to move downward, thereby driving the water blocking plate 31 to move downward through the L-shaped rod 32. At this time, the end of the water pipe 5 close to the shell 6 is blocked by the water blocking plate 31, so the water suction pump 2 cannot discharge water. At this time, the water suction pump 2 cannot absorb water, achieving the effect of automatically stopping the water suction operation. At the same time, after the water tank 38 moves downward, the movable plate 310 is not controlled by the control bar 31 7 is squeezed, at this time, the movable plate 310 moves towards the direction close to the fixed plate 311 under the drive of the spring five 313, so that the movable plate 310 blocks the through hole above the fixed plate 311, at this time, because the fixed plate 311 is in contact with the movable plate 310, the water inside the water tank 38 cannot flow out through the top of the water tank 38, so as to achieve a better preservation effect. When the staff finds that the water suction pump 2 stops absorbing water, the staff opens the door of the shell 6. At this time, the staff manually limits the L-shaped rod 32 and pushes the placement plate 36 upward. Since the water tank 38 moves upward relative to the trapezoidal block 33 at this time, the outer wall of the water tank 38 contacts the inclined surface of the trapezoidal block 33. Therefore, the trapezoidal block 33 moves toward the side away from the water tank 38 at this time.When the outer wall of the water tank 38 is moved to the position below the bayonet 39 and is in the same position as the trapezoidal block 33, the water tank 38 is not limited by the trapezoidal block 33, and the staff can easily take out the water tank 38 to obtain the water body after sampling.

[0025] Embodiment 2

[0026] See also Figure 1-5 On the basis of the first embodiment, the moving device 4 includes a threaded rod 41, the threaded rod 41 is rotatably connected to the outer wall of the sampling tube 1, two protrusions are fixedly connected to the outer wall of the sampling tube 1, the threaded rod 41 is rotatably connected to the outer wall of the sampling tube 1 through the protrusions, the threaded rod 41 is threadedly connected with a control block 42, the control block 42 is fixedly connected to the outer wall of the water suction pump 2, a baffle 43 is slidably connected to the inner wall of the sampling tube 1, and an inclined groove 44 is provided on the inner wall of the sampling tube 1. The shape of the inclined groove 44 is a groove with a vertical middle and an upper and lower part inclined toward the inside of the sampling tube 1. By setting the shape of the inclined groove 44, it is ensured that the baffle 43 can move toward the direction close to the inside of the sampling tube 1 after moving upward and downward, so as to move to a position in a vertical plane different from the push plate 46, thereby When the push plate 46 moves to a certain position, the baffle 43 can be separated from the control of the push plate 46 and reset under the drive of the spring 45. A spring 45 is fixedly connected to the inner wall of the sampling tube 1, and the spring 45 is fixedly connected to the baffle 43. The inner wall of the sampling tube 1 is fixedly connected to a push plate 46. By rotating the threaded rod 41, the control block 42 drives the water suction pump 2 to move up and down, and when the water suction pump 2 moves, the push plate 46 drives the baffle 43 to move inside the inclined groove 44, so that the baffle 43 of the sampling tube 1 close to the water suction pump 2 is in an open state, and the other baffles 43 are in a closed state, thereby ensuring that the water sucked by the water suction pump 2 can enter the shell 6 through the sampling tube 1, thereby completing the water extraction operation.

[0027] During use, on the basis of Example 1, when the staff needs to adjust the depth of the sampling water body, the staff first places the sampling tube 1 inside the water body to be sampled, and then the staff rotates the threaded rod 41. At this time, the control block 42 moves up and down driven by the threaded rod 41. Since the control block 42 is fixedly connected to the outer wall of the water suction pump 2, the water suction pump 2 can move up and down under the drive of the control block 42. Since the water suction pump 2 is slidably connected to the sampling tube 1, the water suction pump 2 can only move up and down. Therefore, the control block 42 cannot rotate with the rotation of the threaded rod 41 and can only move up and down. At this time, the staff first controls the threaded rod 41 to rotate so that the control block 42 is at the lowest position of the threaded rod 41, and then rotates the threaded rod 41 to move the control block 42 upward. When the water suction pump 2 moves upward, the push plate 46 pushes the baffle 43 to move upward. At this time, if the water suction pump 2 needs to draw water, the staff stops rotating the threaded rod 41 and starts the power supply of the equipment. When the power is started, the water suction pump 2 absorbs water and communicates with the sampling tube 1 through the through hole opened on the water suction pump 2. The through hole opened on the sample tube 1 allows water to enter the interior of the sampling tube 1 to achieve the sampling effect. When it is necessary to continue to move the water suction pump 2, the staff continues to rotate the threaded rod 41. At this time, the push plate 46 continues to move upward under the drive of the water suction pump 2, and continues to push the baffle 43 upward. When the baffle 43 continues to move upward and moves to a position biased toward the interior of the sampling tube 1 through the inclined groove 44, the baffle 43 does not contact the push plate 46 at this time. The baffle 43 automatically resets under the drive of the spring 45, and the push plate 46 continues to move upward , and pushes the next baffle 43, so that the water suction pump 2 can always be connected with the sampling tube 1 during the upward movement, and at the same time other through holes are closed to prevent water from leaking through other through holes of the sampling tube 1. When the water suction pump 2 moves downward, the push plate 46 first drives the baffle 43 to move downward. When the baffle 43 moves to the area below the inclined groove 44, the baffle 43 moves to a position close to the inside of the sampling tube 1. At this time, the push plate 46 and the baffle 43 are not in the same horizontal position, and the baffle 43 is reset under the pull of the spring 45.

[0028] Embodiment 3

[0029] See also Figure 1-5On the basis of the first embodiment, the cleaning assembly 316 includes a motor 3161, the motor 3161 is fixedly connected to the outer wall of the shell 6, the output shaft of the motor 3161 is fixedly connected to a rotating rod 3162, the rotating rod 3162 penetrates the inner wall of the shell 6 and is rotatably connected to the inner wall of the shell 6, the rotating rod 3162 is fixedly connected to a scraper 3163, the outer wall material of the scraper 3163 is rubber, and the scraper 3163 is in contact with the upper outer wall of the filter plate 314, by setting the outer wall material of the scraper 3163, it is ensured that the scraper 3163 has the effect of scraping off impurities, and by setting the outer wall material of the scraper 3163 The setting of 163 contacting the outer wall of the filter plate 314 ensures that the scraper 3163 can clean the filter plate 314 during movement, and the motor 3161 is started by turning on the power of the equipment, and the rotating rod 3162 is driven to rotate by the output shaft of the motor 3161, so that the rotating rod 3162 drives the scraper 3163 to rotate during the rotation, so that the scraper 3163 scrapes off the impurities above the filter plate 314 during the rotation, so as to prevent the impurities from clogging the filter plate 314, thereby making it impossible for the taken out water to pass through the filter plate 314.

[0030] When in use, on the basis of Example 1, when the power of the device is turned on, the motor 3161 is started, and the output shaft of the motor 3161 rotates, and the rotating rod 3162 is driven to rotate through the output shaft of the motor 3161. At this time, the rotating rod 3162 rotates, thereby driving the scraper 3163 to rotate through the rotating rod 3162. Therefore, the scraper 3163 rotates on the filter plate 314 at this time, thereby scraping off impurities attached to the filter plate 314, and preventing the sampled water from being unable to pass through the filter plate 314 and falling into the water storage tank 38 due to the large number of impurities attached to the filter plate 314.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sampling device with impurity removal function for water quality detection, comprising a sampling tube (1), characterized in that: The sampling tube (1) is slidably connected to a water suction pump (2), a collecting mechanism (3) is arranged inside the water suction pump (2), a moving device (4) is arranged inside the sampling tube (1), the sampling tube (1) is fixedly connected to a shell (6) via a water pipe (5), and the interior of the shell (6) is connected to the interior of the sampling tube (1) via the interior of the water pipe (5); The collecting mechanism (3) comprises a water blocking plate (31), the water blocking plate (31) is slidably connected to the inner wall of the shell (6), the water blocking plate (31) is fixedly connected to an L-shaped rod (32), a trapezoidal block (33) is slidably connected to the inner wall of the L-shaped rod (32), the trapezoidal block (33) is elastically connected to the L-shaped rod (32) through a second spring (34), a third spring (35) is fixedly connected to the lower outer wall of the L-shaped rod (32), a placement plate (36) is slidably connected to the inner wall of the shell (6), a fourth spring (37) is fixedly connected to the lower inner wall of the placement plate (36), the fourth spring (37) is fixedly connected to the bottom inner wall of the shell (6), the placement plate (36) is movably connected to a water storage tank (38), and the A bayonet (39) is provided on the outer wall of the water storage tank (38); a movable plate (310) is slidably connected to the inner wall of the water storage tank (38); a fixed plate (311) is fixedly connected to the inner wall of the water storage tank (38); a fixed block (312) is fixedly connected to the inner wall of the water storage tank (38); a spring five (313) is fixedly connected above the fixed block (312); one end of the spring five (313) away from the fixed block (312) is fixedly connected below the movable plate (310); a filter plate (314) is slidably connected to the inner wall of the shell (6); a control strip (317) is fixedly connected below the filter plate (314); and a cleaning assembly (316) is provided above the filter plate (314).

2. A sampling device with impurity removal function for water quality detection according to claim 1, characterized in that: Through holes at different vertical positions are provided above the fixed plate (311) and the movable plate (310), and the outer walls of the fixed plate (311) and the movable plate (310) are made of silica gel.

3. A sampling device with impurity removal function for water quality detection according to claim 2, characterized in that: The moving device (4) comprises a threaded rod (41), the threaded rod (41) is rotatably connected to the outer wall of the sampling tube (1), the threaded rod (41) is threadedly connected to a control block (42), the control block (42) is fixedly connected to the outer wall of the water suction pump (2), a baffle (43) is slidably connected to the inner wall of the sampling tube (1), an inclined groove (44) is provided on the inner wall of the sampling tube (1), a spring 1 (45) is fixedly connected to the inner wall of the sampling tube (1), the spring 1 (45) is fixedly connected to the baffle (43), and a push plate (46) is fixedly connected to the inner wall of the sampling tube (1).

4. A sampling device with impurity removal function for water quality detection according to claim 3, characterized in that: The shape of the inclined groove (44) is a groove with a vertical center and an upper and lower part inclined toward the inside of the sampling tube (1).

5. A sampling device with impurity removal function for water quality detection according to claim 4, characterized in that: The cleaning assembly (316) comprises a motor (3161), wherein the motor (3161) is fixedly connected to the outer wall of the shell (6), the output shaft of the motor (3161) is fixedly connected to a rotating rod (3162), the rotating rod (3162) passes through the inner wall of the shell (6) and is rotatably connected to the inner wall of the shell (6), and the rotating rod (3162) is fixedly connected to a scraper (3163).

6. A sampling device with impurity removal function for water quality detection according to claim 5, characterized in that: The outer wall of the scraper (3163) is made of rubber, and the scraper (3163) is in contact with the upper outer wall of the filter plate (314).

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