Lake water quality detection sampling device

Abstract

The invention discloses a lake water quality detection sampling device which comprises a sampling ship, a floating base is integrally arranged at the bottom of the sampling ship, side protection rubber plates are integrally arranged on the two sides of the sampling ship, a depth-keeping sampling device is installed in the sampling ship, and a maintenance sealing plate is detachably installed on the side, located on the depth-keeping sampling device, of the sampling ship. An inverted-U-shaped supporting frame is fixedly installed on the sampling ship, a remote controller is fixedly installed on the inverted-U-shaped supporting frame, and a receiver electrically connected with the remote controller is installed on the inverted-U-shaped supporting frame in a penetrating mode. The lake water quality sampling device can be used for sampling lake water at the same position and different depths at a time, sampling work at different positions and different depths at a time can also be achieved at a time, the sampling efficiency is improved, accurate sampling of the lake water quality is achieved, the data accuracy is improved, remote control is adopted, and sampling is more convenient and faster.

Description

Technical Field

[0001] The present invention relates to the technical field of lake water quality sampling, and in particular to a lake water quality detection sampling device. Background Art

[0002] Environmental monitoring is to track changes in environmental quality and determine the level of environmental quality by testing the content and emissions of various substances that have an impact on humans and the environment, providing a basis and guarantee for environmental management, pollution control and other work. Simply put, understanding the environmental level and conducting environmental monitoring are the prerequisites for carrying out all environmental work. Environmental monitoring usually includes background investigation, determining plans, optimizing site layout, on-site sampling, sample transportation, experimental analysis, data collection, analysis and synthesis, etc.

[0003] On-site sampling is an important part of environmental monitoring and testing. For example, in lake water environment monitoring, the data source comes from the collected water samples, and the collected water samples come from various points in the lake. The existing method is to use personnel to collect them manually by boat, which is labor-intensive and too time-consuming. A Chinese patent discloses a sampling device for lake water quality testing (authorization announcement number CN106441994B). This patented technology is convenient for collecting water samples from various points in the lake, which brings convenience to lake water quality testing. Although this patent can collect water samples from various points in the lake, it only collects water samples at the same depth in each area, and cannot collect water samples at different depths in the area, resulting in its water sample collection being not comprehensive enough.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention aims to provide a lake water quality detection sampling device.

[0006] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical scheme: a lake water quality detection sampling device, including a sampling boat, a floating base is integrally provided at the bottom of the sampling boat, side protection rubber plates are integrally provided on both sides of the sampling boat, a fixed-depth sampling device is installed in the sampling boat, the fixed-depth sampling device includes a fixed-depth sampling assembly, the fixed-depth sampling assembly includes an outer protective barrel, a sealing cover is detachably installed on the top of the outer protective barrel, a partitioning cross plate is fixedly installed inside the outer protective barrel, a movable extraction assembly is installed on the top of the partitioning cross plate, a lower docking assembly is provided at the bottom of the mobile extraction assembly, three groups of internal tension collection assemblies extending outside the outer protective barrel are detachably provided at the bottom, a hose connected to the lower docking assembly is connected to the top of the internal tension collection assembly through a sealing ring, a removal sealing door is detachably provided on both sides of the outer protective barrel, a maintenance sealing plate is detachably installed on one side of the fixed-depth sampling device on the sampling boat, an inverted U-shaped support frame is fixedly installed on the sampling boat, a remote controller is fixedly installed on the inverted U-shaped support frame, and a receiver electrically connected to the remote controller is installed through the inverted U-shaped support frame.

[0007] Preferably, an inner cavity is provided inside the sampling ship, in which an insulating partition is fixedly installed, a battery is installed on one side of the insulating partition, and a winding drum is rotatably installed in the inner cavity on the other side of the insulating partition, one end of the winding drum is connected to a forward and reverse motor installed in the inner cavity, an encoder is control-connected to the forward and reverse motor, and a cable is wound on the winding drum.

[0008] Preferably, the fixed-depth sampling device includes a storage cavity on one side of the inner cavity, a sealing cover is detachably provided on the top of the storage cavity, a fixed-depth sampling assembly is provided inside the storage cavity, a fixed-depth sampling assembly is detachably connected to a cable through a fixing block on the top, a U-shaped supporting block is provided at the bottom of one end of the cable located in the storage cavity, and binding ropes that are movable and pass through the sealing cover are symmetrically provided on the U-shaped supporting block.

[0009] Preferably, the mobile extraction assembly includes a supporting horizontal plate fixed in the outer protective barrel and located above the dividing horizontal plate, the supporting horizontal plate is provided with a strip groove, and side plates are located at both ends of the strip groove on the supporting horizontal plate, wherein a motor is installed on the outer wall of one of the side plates, and the output end of the motor is connected to a screw rod rotatably installed on the other side plate, a sliding block is threaded on the screw rod, and a displacement sensor is provided on the sliding block.

[0010] Preferably, a negative pressure suction pump is provided under the supporting cross plate, a connecting column penetrating the strip groove is provided between the negative pressure suction pump and the sliding block, guide blocks are integrally provided on both sides of the connecting column, and sliding grooves matching with the guide blocks are provided on both sides of the inner wall of the strip groove, the suction end of the negative pressure suction pump is connected to a telescopic pipe component, and the bottom end of the telescopic pipe component is connected to the lower docking assembly.

[0011] Preferably, the telescopic pipe component includes an outer sleeve connected to the suction end of the negative pressure suction pump, an inner telescopic tube is movably sleeved inside the outer sleeve, an electric telescopic rod is fixedly mounted on the outer wall of the outer sleeve, the output end of the electric telescopic rod is connected to the inner telescopic tube through a connecting block, and a sealing ring is provided at the connection between the outer sleeve and the inner telescopic tube.

[0012] Preferably, the lower docking assembly includes an upper docking sleeve fixedly connected to the end of the inner telescopic tube and a lower docking joint connected to one end of the hose and fixed on the dividing cross plate, the inner wall of the upper docking sleeve is provided with an array of annular sealing grooves, the lower docking joint is integrally connected with a lower inner sleeve matching the upper docking sleeve, the outer wall of the lower inner sleeve is provided with a sealing rubber ring matching the annular sealing groove, and a sealing ring is provided at the junction of the lower inner sleeve and the lower docking joint.

[0013] Preferably, the internal tension collection component includes a sampling cylinder, an upper conical negative pressure chamber is provided inside the sampling cylinder, the bottom of the upper conical negative pressure chamber is connected to a lower conical air suction bin through a pipeline, a conical rubber sleeve is provided on the lower conical air suction bin, an elastic leak-proof film is provided at the bottom end of the lower conical air suction bin, and a suction hole is provided at the center of the elastic leak-proof film.

[0014] Preferably, a submersible motor is fixedly installed at the tail end of the sampling ship, a spiral blade is connected to the output end of the submersible motor, and a protective ring is provided outside the spiral blade.

[0015] The present invention provides a lake water quality detection sampling device, which has the following beneficial effects: By integrally providing a floating base and a side protective rubber plate at the bottom of the sampling boat, the sampling boat can be effectively protected during driving. The set fixed-depth sampling device can implement sampling work according to the set depth. At the same time, it can sample lake water quality at different depths at the same position at one time, and it can also implement sampling work at different depths at different positions at one time, which increases the efficiency of adoption and realizes accurate sampling of lake water quality. The remote controller provided on the inverted U-shaped support frame cooperates with the receiver to realize remote control of the sampling boat to perform sampling work in the lake. The present invention can have a good protective effect on the sampling boat. At the same time, it can sample lake water quality at different depths at the same position at one time, and it can also implement sampling work at different depths at different positions at one time, which increases the efficiency of adoption and realizes accurate sampling of lake water quality, improves data accuracy, and adopts remote control, making sampling more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a front view of a lake water quality detection sampling device according to an embodiment of the present invention; Figure 2 It is a schematic diagram of the internal structure of a sampling boat in a lake water quality detection sampling device according to an embodiment of the present invention; Figure 3 is an enlarged view of point A in a lake water quality detection sampling device according to an embodiment of the present invention; Figure 4 It is a structural schematic diagram of a fixed-depth sampling component in a lake water quality detection sampling device according to an embodiment of the present invention; Figure 5 It is a structural schematic diagram of a mobile extraction component in a lake water quality detection sampling device according to an embodiment of the present invention; Figure 6 It is a structural schematic diagram of a telescopic pipe component in a lake water quality detection sampling device according to an embodiment of the present invention; Figure 7 It is a structural schematic diagram of a lower docking assembly in a lake water quality detection sampling device according to an embodiment of the present invention; Figure 8 It is a structural schematic diagram of an internal tension acquisition component in a lake water quality detection sampling device according to an embodiment of the present invention.

[0018] In the figure: 1. Sampling boat; 2. Floating base; 3. Side protective rubber plate; 4. Fixed depth sampling device; 5. Maintenance sealing plate; 6. Inverted U-shaped support frame; 7. Remote controller; 8. Receiver; 9. Insulating partition; 10. Battery; 11. Winding drum; 12. Forward and reverse motor; 13. Cable; 14. Storage cavity; 15. Fixed depth sampling assembly; 16. Fixed block; 17. U-shaped support block; 18. Binding rope; 19. External protective barrel; 20. Sealing cover; 21. Partition horizontal plate; 22. Mobile extraction assembly; 23. Lower docking assembly; 24. Internal tension collection assembly; 25. Sealing ring; 26. Remove the sealing door; 27. Support horizontal plate; 28. Side plate; 2 9. Motor; 30. Screw; 31. Sliding block; 32. Displacement sensor; 33. Negative pressure suction pump; 34. Slide; 35. Guide block; 36. Telescopic pipe component; 37. Outer sleeve; 38. Inner telescopic tube; 39. Electric telescopic rod; 40. Connecting block; 41. Sealing ring 1; 42. Upper docking sleeve; 43. Annular sealing groove; 44. Lower docking joint; 45. Lower inner sleeve; 46. Sealing ring 2; 47. Sealing rubber ring; 48. Sampling tube; 49. Upper conical negative pressure chamber; 50. Pipeline; 51. Lower conical suction chamber; 52. Conical rubber sleeve; 53. Elastic leak-proof film; 54. Submersible motor; 55. Spiral blade; 56. Protective ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0020] See also Figure 1-8The present invention provides a lake water quality detection sampling device, including a sampling boat 1, a floating base 2 is integrally provided at the bottom of the sampling boat 1, and side protection rubber plates 3 are integrally provided on both sides of the sampling boat 1. By integrally providing the floating base 2 and the side protection rubber plates 3 at the bottom of the sampling boat 1, the sampling boat 1 can be effectively protected during the driving process. A fixed-depth sampling device 4 is installed in the sampling boat 1, and the fixed-depth sampling device 4 includes a fixed-depth sampling component 15. The fixed-depth sampling component 15 includes an outer protective barrel 19, and a sealing cover 20 is detachably installed on the top of the outer protective barrel 19. A partitioning transverse plate 21 is fixedly installed inside the outer protective barrel 19, and a movable extraction component 22 is installed on the top of the partitioning transverse plate 21. A lower docking component 23 is provided at the bottom of the movable extraction component 22. The bottom of the outer protective barrel 19 is detachably provided with three groups of internal tension collection components 24 extending outside the outer protective barrel 19, and the top of the internal tension collection component 24 is connected to a hose connected to the lower docking component 23 through a sealing ring 25. The outer protective barrel 1 9 is detachably provided with a removal sealing door 26 on both sides, and the mobile extraction component 22 arranged in the outer protective barrel 19 can be used to apply negative pressure to the three groups of internal tension collection components 24 respectively, so as to realize sampling work at different depths and different positions. The removal sealing door 26 is arranged to facilitate the removal of the internal tension collection component 24 after the adoption is completed. A maintenance sealing plate 5 is detachably installed on one side of the fixed depth sampling device 4 on the sampling boat 1. At the same time, the lake water quality at different depths at the same position can be sampled at one time, and the sampling work at different positions and depths can be realized at one time, which increases the efficiency of adoption and realizes accurate sampling of lake water quality. An inverted U-shaped support frame 6 is fixedly installed on the sampling boat 1, and a remote controller 7 is fixedly installed on the inverted U-shaped support frame 6. A receiver 8 electrically connected to the remote controller 7 is installed through the inverted U-shaped support frame 6. The remote controller 7 arranged on the inverted U-shaped support frame 6 cooperates with the receiver 8 to realize remote control of the sampling boat 1 to perform sampling work in the lake.

[0021] In one embodiment, please refer to the attached manual. Figure 2As shown, the interior of the sampling ship 1 is provided with an inner cavity, in which an insulating partition 9 is fixedly installed, a battery 10 is installed on one side of the insulating partition 9, and a winding drum 11 is rotatably installed in the inner cavity on the other side of the insulating partition 9, one end of the winding drum 11 is connected to a forward and reverse motor 12 installed in the inner cavity, an encoder is controlled and connected to the forward and reverse motor 12, a cable 13 is wound on the winding drum 11, and the fixed depth sampling device 4 includes a storage cavity 14 on one side of the inner cavity, a sealing cover is detachably provided on the top of the storage cavity 14, a fixed depth sampling assembly 15 is provided inside the storage cavity 14, a fixed depth sampling assembly 15 is provided on the top of the fixed depth sampling assembly 15, a fixing block 16 is provided which is detachably connected to the cable 13, a U-shaped support block 17 is provided at the bottom of one end of the cable 13 located in the storage cavity 14, and a binding rope 18 that is movable and passes through the sealing cover is symmetrically provided on the U-shaped support block 17. The rotation of the winding drum 11 is controlled by the forward and reverse motor 12, and the encoder can know the number of revolutions of the forward and reverse motor 12, thereby calculating the length of the cable 13 lowered, and then knowing the sampling depth, thereby realizing the sampling work of the fixed-depth sampling component 15 at different depths. The U-shaped support block 17 provides support for the cable 13, and the binding rope 18 can fix the U-shaped support block 17.

[0022] In one embodiment, please refer to the attached manual. Figure 5 As shown, the mobile extraction component 22 includes a supporting cross plate 27 fixed in the outer protective barrel 19 and located above the dividing cross plate 21, a strip groove is opened on the supporting cross plate 27, and side plates 28 are located at both ends of the strip groove on the supporting cross plate 27, a motor 29 is installed on the outer wall of one of the side plates 28, and the output end of the motor 29 is connected to a screw rod 30 rotatably installed on the other side plate 28, a sliding block 31 is threadedly provided on the screw rod 30, and a displacement sensor 32 is provided on the sliding block 31, and a negative pressure suction pump 33 is provided below the supporting cross plate 27, and a connecting column passing through the strip groove is provided between the negative pressure suction pump 33 and the sliding block 31, and guide blocks 35 are integrally provided on both sides of the connecting column, and slide grooves 34 matching with the guide blocks 35 are provided on both sides of the inner wall of the strip groove, and the suction end of the negative pressure suction pump 33 is connected to a telescopic pipe component 36, and the bottom end of the telescopic pipe component 36 is connected to the lower docking component 23. The motor 29 is provided to drive the screw rod 30 to rotate, so that the sliding block 31 moves, so that the connecting column drives the negative pressure suction pump 33 and the telescopic pipe component 36 connected thereto to move. Since the three groups of sampling cylinders 48 are arranged at equal intervals, the distance moved by the displacement sensor 32 controller can realize its docking movement with each sampling cylinder 48.

[0023] In one embodiment, please refer to the attached manual. Figure 6As shown, the telescopic pipe component 36 includes an outer sleeve 37 connected to the suction end of the negative pressure suction pump 33, an inner telescopic tube 38 is movably sleeved in the outer sleeve 37, an electric telescopic rod 39 is fixedly installed on the outer wall of the outer sleeve 37, the output end of the electric telescopic rod 39 is connected to the inner telescopic tube 38 through a connecting block 40, and a sealing ring 41 is provided at the connection between the outer sleeve 37 and the inner telescopic tube 38. The electric telescopic rod 39 is provided to push one end of the inner telescopic tube 38 to extend out of the outer sleeve 37, so as to achieve the docking work between the lower inner sleeve 45 and the lower docking joint 44 in the lower docking assembly 23.

[0024] In one embodiment, please refer to the attached manual. Figure 7 As shown, the lower docking assembly 23 includes an upper docking sleeve 42 fixedly connected to the end of the inner telescopic tube 38 and a lower docking joint 44 connected to one end of the hose and fixed on the dividing horizontal plate 21. The inner wall of the upper docking sleeve 42 is provided with an array of annular sealing grooves 43, and the lower docking joint 44 is integrally connected with a lower inner sleeve 45 matching the upper docking sleeve 42. The outer wall of the lower inner sleeve 45 is provided with a sealing rubber ring 47 matching the annular sealing groove 43, and a sealing ring 46 is provided at the intersection of the lower inner sleeve 45 and the lower docking joint 44. The lower inner sleeve 45 is provided with a docking work with the lower docking joint 44, so that the sealing rubber ring 47 matches the annular sealing groove 43, so as to achieve a sealing effect at the docking point, and will not affect the separation work of the lower inner sleeve 45 and the lower docking joint 44.

[0025] In one embodiment, please refer to the attached manual. Figure 8 As shown, the internal tension collection assembly 24 includes a sampling tube 48, an upper conical negative pressure chamber 49 is provided inside the sampling tube 48, the bottom of the upper conical negative pressure chamber 49 is connected to a lower conical air suction chamber 51 through a pipe 50, a conical rubber sleeve 52 is provided on the lower conical air suction chamber 51, an elastic leakproof film 53 is provided at the bottom end of the lower conical air suction chamber 51, and a suction hole is provided at the center of the elastic leakproof film 53. The suction force generated by the negative pressure suction pump 33 enters the upper conical negative pressure chamber 49 in the sampling tube 48, and because the diameter of the pipe 50 is small, the lower conical air suction chamber 51 is conical, which can generate a large suction force, so that water is sucked into the lower conical air suction chamber 51 through the suction hole at the center of the elastic leakproof film 53, and due to the tension at the elastic leakproof film 53, the water will not leak out after being sucked.

[0026] In one embodiment, please refer to the attached manual. Figure 1 As shown, a submersible motor 54 is fixedly installed at the tail end of the sampling ship 1, and a spiral blade 55 is connected to the output end of the submersible motor 54. A protective ring 56 is arranged outside the spiral blade 55. The submersible motor 54 drives the spiral blade 55 to rotate, so that the sampling ship 1 can be moved, and the protective ring 56 can protect the spiral blade 55.

[0027] In actual application, by integrally providing a floating base 2 and a side protective rubber plate 3 at the bottom of the sampling boat 1, the sampling boat 1 can be effectively protected during driving. The fixed depth sampling device 4 can realize sampling according to the set depth. The mobile extraction component 22 arranged in the outer protective barrel 19 can respectively apply negative pressure to the three groups of internal tension collection components 24 to realize sampling at different depths and different positions. The removal sealing door 26 is provided to facilitate the removal of the internal tension collection component 24 after the adoption is completed. The lake water quality at different depths at the same position can be sampled at one time, and the sampling work at different depths at different positions can be realized at one time, which increases the efficiency of adoption and realizes the accurate sampling of lake water quality. The remote controller 7 arranged on the inverted U-shaped support frame 6 cooperates with the receiver 8 to realize remote control of the sampling boat 1 to perform sampling in the lake. The present invention can have a good protective effect on the sampling boat 1. At the same time, the lake water quality at different depths at the same position can be sampled at one time, and the sampling work at different depths at different positions can be realized at one time, which increases the efficiency of adoption, realizes the accurate sampling of lake water quality, improves the accuracy of data, and adopts remote control, so that sampling is more convenient and quick.

[0028] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A lake water quality detection sampling device, characterized in that: The sampling vessel (1) comprises a sampling vessel (1), wherein a floating base (2) is integrally provided at the bottom of the sampling vessel (1), side protective rubber plates (3) are integrally provided at both sides of the sampling vessel (1), a fixed-depth sampling device (4) is installed in the sampling vessel (1), the fixed-depth sampling device (4) comprises a fixed-depth sampling assembly (15), the fixed-depth sampling assembly (15) comprises an outer protective barrel (19), a sealing cover (20) is detachably installed on the top of the outer protective barrel (19), a partitioning transverse plate (21) is fixedly installed inside the outer protective barrel (19), a mobile extraction assembly (22) is installed on the top of the partitioning transverse plate (21), a lower docking assembly (23) is provided at the bottom of the mobile extraction assembly (22), and the outer protective barrel (19) is provided with a sealing cover (20) which is detachably installed on the top of the outer protective barrel (19). The bottom of the protective barrel (19) is detachably provided with three groups of internal tension collection components (24) extending outside the protective barrel (19); the top of the internal tension collection component (24) is connected to a hose connected to the lower docking component (23) through a sealing ring (25); both sides of the outer protective barrel (19) are detachably provided with a removal sealing door (26); a maintenance sealing plate (5) is detachably installed on one side of the fixed depth sampling device (4) on the sampling ship (1); an inverted U-shaped support frame (6) is fixedly installed on the sampling ship (1); a remote controller (7) is fixedly installed on the inverted U-shaped support frame (6); and a receiver (8) electrically connected to the remote controller (7) is installed through the inverted U-shaped support frame (6).

2. A lake water quality detection sampling device according to claim 1, characterized in that: An inner cavity is provided inside the sampling vessel (1), an insulating partition (9) is fixedly installed in the inner cavity, a storage battery (10) is installed on one side of the insulating partition (9), a winding drum (11) is rotatably installed in the inner cavity on the other side of the insulating partition (9), one end of the winding drum (11) is connected to a forward and reverse motor (12) installed in the inner cavity, an encoder is control-connected to the forward and reverse motor (12), and a cable (13) is wound on the winding drum (11).

3. A lake water quality detection sampling device according to claim 2, characterized in that: The fixed-depth sampling device (4) comprises a storage cavity (14) on one side of the inner cavity, a sealing cover is detachably provided on the top of the storage cavity (14), a fixed-depth sampling assembly (15) is provided inside the storage cavity (14), a fixed-depth sampling assembly (15) is detachably connected to the cable (13) via a fixing block (16) is provided on the top of the fixed-depth sampling assembly (15), a U-shaped support block (17) is provided at the bottom of one end of the cable (13) located in the storage cavity (14), and a binding rope (18) that is movable and passes through the sealing cover is symmetrically provided on the U-shaped support block (17).

4. A lake water quality detection sampling device according to claim 3, characterized in that: The mobile extraction assembly (22) comprises a supporting transverse plate (27) fixed in the outer protective barrel (19) and located above the partition transverse plate (21), the supporting transverse plate (27) being provided with a strip groove, and side plates (28) located at both ends of the strip groove on the supporting transverse plate (27), wherein a motor (29) is mounted on the outer wall of one of the side plates (28), the output end of the motor (29) being connected to a screw rod (30) rotatably mounted on the other side plate (28), a sliding block (31) being threadedly provided on the screw rod (30), and a displacement sensor (32) being provided on the sliding block (31).

5. A lake water quality detection sampling device according to claim 4, characterized in that: A negative pressure suction pump (33) is provided below the supporting horizontal plate (27); a connecting column penetrating the strip groove is provided between the negative pressure suction pump (33) and the sliding block (31); guide blocks (35) are integrally provided on both sides of the connecting column; sliding grooves (34) matching with the guide blocks (35) are provided on both sides of the inner wall of the strip groove; a suction end of the negative pressure suction pump (33) is connected to a telescopic pipe component (36); and the bottom end of the telescopic pipe component (36) is connected to the lower docking assembly (23).

6. A lake water quality detection sampling device according to claim 5, characterized in that: The telescopic pipe component (36) comprises an outer sleeve (37) connected to the suction end of the negative pressure suction pump (33), an inner telescopic tube (38) is movably sleeved inside the outer sleeve (37), an electric telescopic rod (39) is fixedly mounted on the outer wall of the outer sleeve (37), an output end of the electric telescopic rod (39) is connected to the inner telescopic tube (38) via a connecting block (40), and a sealing ring (41) is provided at the connection between the outer sleeve (37) and the inner telescopic tube (38).

7. A lake water quality detection sampling device according to claim 6, characterized in that: The lower docking assembly (23) comprises an upper docking sleeve (42) fixedly connected to the end of the inner telescopic tube (38) and a lower docking joint (44) connected to one end of the hose and fixed on the partitioning cross plate (21); the inner wall of the upper docking sleeve (42) is provided with a plurality of annular sealing grooves (43); the lower docking joint (44) is integrally connected with a lower inner sleeve (45) matching the upper docking sleeve (42); the outer wall of the lower inner sleeve (45) is provided with a sealing rubber ring (47) matching the annular sealing groove (43); and a second sealing ring (46) is provided at the junction of the lower inner sleeve (45) and the lower docking joint (44).

8. A lake water quality detection sampling device according to claim 7, characterized in that: The internal tension collection component (24) comprises a sampling tube (48), an upper conical negative pressure chamber (49) is provided inside the sampling tube (48), the bottom of the upper conical negative pressure chamber (49) is connected to a lower conical air suction chamber (51) via a pipe (50), a conical rubber sleeve (52) is provided on the lower conical air suction chamber (51), an elastic leak-proof film (53) is provided at the bottom end of the lower conical air suction chamber (51), and a suction hole is provided at the center of the elastic leak-proof film (53).

9. A lake water quality detection sampling device according to claim 8, characterized in that: A submersible motor (54) is fixedly mounted at the tail end of the sampling ship (1); a spiral blade (55) is connected to the output end of the submersible motor (54); and a protective ring (56) is provided outside the spiral blade (55).

Images