A hydrogeological detection sampler

Abstract

The present invention relates to the technical field related to geological detection, and specifically to a hydrogeological detection sampler, comprising a mounting frame and a receiving frame fixedly mounted on the mounting frame, the receiving frame being fixedly connected to a water pumping pipe, a pumping device being arranged in the water pumping pipe, and also comprising a water intake structure mounted at the bottom of the water pumping pipe, the water intake structure being communicated with the inner side of the water pumping pipe; a collection component mounted outside the water pumping pipe, a threaded pusher mounted on the pumping pipe and connected to the water intake structure; a linkage member respectively connecting the threaded pusher and the collection component. The present invention controls the pumping device to reciprocate for pumping, changes the collection position of the collection component under the transmission of the linkage member, and controls the threaded pusher to work through the transmission when performing water pressure work, so as to adjust the water intake depth of the water intake structure, so that water of different depths can be collected separately, so as to improve the accuracy of water quality detection data of different depths.

Description

Technical Field

[0001] The invention relates to the technical field related to geological detection, and in particular to a hydrogeological detection sampler. Background Art

[0002] Hydrogeology refers to the various changes and movements of groundwater in nature. It mainly studies the distribution and formation of groundwater, the physical properties and chemical composition of groundwater, groundwater resources and their rational use, the adverse effects of groundwater on engineering construction and mining and their prevention and control, etc. Hydrogeological exploration is an in-depth investigation of hydrological resources in a specific area after the distribution of groundwater has been ascertained by a census, serving a specific purpose, such as an investigation of water supply hydrology in the area from the perspective of residents' health.

[0003] Traditional water source detection usually uses manual sampling or samplers. When using a sampler for sampling, in order to collect water samples at different depths, the sampling section of the existing sampler is usually equipped with a telescopic device. However, water samples at different depths cannot be automatically collected separately, resulting in the possibility of water samples at different depths being mixed together, causing errors in the water sample detection data. Summary of the invention

[0004] The purpose of the present invention is to provide a hydrogeological detection sampler to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A hydrogeological detection sampler comprises a mounting frame and a receiving frame fixedly mounted on the mounting frame, a water pumping pipe is fixedly connected to the receiving frame, and a pumping device is arranged in the water pumping pipe.

[0007] It also includes a water intake structure installed at the bottom of the water pumping pipe, and the water intake structure is communicated with the inner side of the water pumping pipe;

[0008] A collection component is installed outside the water pumping pipe and communicated with the inner side of the water pumping pipe.

[0009] A threaded pusher, installed on the water pumping pipe and connected to the water intake structure;

[0010] The linkage parts are respectively connected to the threaded pushing parts and the collecting components. When the pumping device performs the water pressure work, the water intake depth of the water intake structure is adjusted. The pumping device performs the water pumping action to control the collection position of the collecting component to change.

[0011] The hydrogeological detection sampler as described above: a water pumping end and a water outlet end are respectively arranged at the bottom of the water pumping pipe, and a one-way valve is arranged in each of the water pumping end and the water outlet end.

[0012] The hydrogeological detection sampler as described above: the pumping device comprises a piston that slides in a sealed manner with the inner wall of the water pumping pipe, a movable shaft is arranged along the axial direction of the piston, and a tooth plate is formed on the end of the movable shaft away from the piston;

[0013] It also includes a cylinder fixedly mounted on the mounting frame, wherein the movable end of the cylinder is fixedly connected to the movable shaft.

[0014] The hydrogeological detection sampler as described above: the threaded pusher includes a screw rod rotatably mounted on the water pumping pipe, the screw rod is arranged in a direction parallel to the axis of the water pumping pipe, and a threaded sleeve is threadedly connected to the screw rod.

[0015] The hydrogeological detection sampler as described above: the water intake structure includes a plug-in tube and an internal tube, one end of the plug-in tube is detachably connected to the bottom of the water pumping end and is arranged along the axial direction of the water pumping end, the internal tube is slidably arranged in the plug-in tube, and the end of the internal tube away from the plug-in tube is connected to the threaded sleeve through a connecting ring.

[0016] The hydrogeological detection sampler as described above: the collection component includes a placement table rotatably installed on the side end of the water pumping pipe, a tray is sleeved on the rotating shaft of the placement table, a strip groove is formed on the tray, and a plurality of sampling tubes are arranged equidistantly in the radial direction on the placement table, and the sampling tubes are detachably connected to the placement table.

[0017] The hydrogeological detection sampler as described above: the linkage member includes a first transmission shaft rotatably mounted on the mounting frame, and the first transmission shaft is symmetrically provided with a first gear meshing with the toothed plate; and also includes intermittent transmission members arranged on both sides of the first transmission shaft.

[0018] The hydrogeological detection sampler as described above: the intermittent transmission component includes a second transmission shaft rotatably mounted on the mounting frame, a ratchet is fixedly connected to the second transmission shaft, the ratchet is meshed with a second gear fixedly mounted on the first transmission shaft, the second transmission shaft is connected to a third transmission shaft rotatably mounted on the water pumping pipe through a bevel gear set, and the third transmission shaft is connected to the screw rod through a first belt.

[0019] As the hydrogeological detection sampler as described above: a fourth transmission shaft is rotatably installed on the water pumping pipe, the fourth transmission shaft is connected to the third transmission shaft through a second belt, a turntable is fixedly arranged on the fourth transmission shaft, and a convex column which rotatably cooperates with the strip groove is arranged at an eccentric position of the turntable.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: by controlling the pumping device to perform reciprocating pumping work to adjust the pressure in the water pumping pipe, the water intake structure performs the water intake work, and the water pumped in the water pumping pipe is transported to the collection component, wherein when the pumping device performs the water pumping action, the collection position of the collection component is changed through the transmission, and when the water pressure work is performed, the threaded pushing member is controlled by the transmission to adjust the water intake depth of the water intake structure, so that water at different depths can be collected separately, so as to improve the accuracy of water quality detection data at different depths. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the hydrogeological detection sampler.

[0022] Figure 2 This is a schematic diagram of the structure of the hydrogeological detection sampler from another angle.

[0023] Figure 3 This is a schematic diagram of the structure of the receiving frame and water pumping pipe in the hydrogeological detection sampler.

[0024] Figure 4 This is a schematic diagram of the structure of the threaded pusher in the hydrogeological detection sampler.

[0025] Figure 5 This is a schematic diagram of the structure of the pumping device in the hydrogeological detection sampler.

[0026] Figure 6 This is a structural schematic diagram of the water intake structure and threaded pusher in the hydrogeological detection sampler.

[0027] Figure 7 This is a structural schematic diagram of the gap transmission parts and collection components in the hydrogeological detection sampler.

[0028] Figure 8 This is a structural schematic diagram of the gap transmission parts and collection components in the hydrogeological detection sampler from another angle.

[0029] Fig. 9 This is a schematic diagram of the structure of the linkage components in the hydrogeological detection sampler.

[0030] In the figure: 1. mounting frame; 2. cylinder; 3. receiving frame; 4. water pumping pipe; 401. water pumping end; 402. water outlet end; 5. piston; 6. movable shaft; 7. plug-in pipe; 8. built-in pipe; 9. outlet pipe; 10. screw rod; 11. threaded sleeve; 12. connecting ring; 13. placing table; 14. sampling tube; 15. toothed plate; 16. first transmission shaft; 17. ratchet; 18. second gear; 19. bevel gear set; 20. second transmission shaft; 21. third transmission shaft; 22. fourth transmission shaft; 23. turntable; 2301. boss; 24. first gear; 25. tray; 26. first belt; 27. second belt. DETAILED DESCRIPTION

[0031] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0032] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0033] In addition, in order to better illustrate the present application, numerous specific details are provided in the specific embodiments below. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, and elements well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0034] See also Figure 1 to Figure 9 In an embodiment of the present invention, a hydrogeological detection sampler includes a mounting frame 1, a receiving frame 3, a water pumping pipe 4, a pumping device, a water intake structure, a collection component, a threaded pusher, and a linkage member.

[0035] For details, please refer to Figure 1 , Figure 5 , Figure 7 , Figure 8 ,include;

[0036] The mounting frame 1 and the receiving frame 3 fixedly mounted on the mounting frame 1, the receiving frame 3 is fixedly connected with a water pumping pipe 4, and the water pumping pipe 4 is provided with a pumping device.

[0037] It also includes a water intake structure installed at the bottom of the water pumping pipe 4, and the water intake structure is communicated with the inner side of the water pumping pipe 4;

[0038] The collection component is installed outside the water pumping pipe 4 and communicated with the inner side of the water pumping pipe 4.

[0039] A threaded pusher, installed on the water pumping pipe 4 and connected to the water intake structure;

[0040] The linkage parts are respectively connected to the threaded pushing parts and the collecting components. When the pumping device performs the water pressure work, the water intake depth of the water intake structure is adjusted. The pumping device performs the water pumping action to control the collection position of the collecting component to change.

[0041] In detail, in the present invention, the hydrogeological detection sampler described in the present invention is adopted. When in use, the pumping device is controlled to perform reciprocating pumping work to adjust the pressure in the water pumping pipe 4, so that the water intake structure performs the water intake work, and the water extracted in the water pumping pipe 4 is transported to the collection component. When the pumping device performs the water pumping action, the collection position of the collection component is changed through the transmission. When the water pressure work is performed, the threaded pushing member is controlled by the transmission to adjust the water intake depth of the water intake structure, so that water at different depths can be collected separately to improve the accuracy of water quality detection data at different depths.

[0042] Preferably, a pumping end 401 and a water outlet end 402 are respectively provided at the bottom of the pumping pipe 4, and a first one-way valve and a second one-way valve are respectively provided in the pumping end 401 and the water outlet end 402, wherein when the pumping device performs the pumping action, the pressure in the pumping pipe 4 decreases, so that the spring on the pumping end 401 is stretched, and the ball valve moves toward the pumping pipe 4 close to one end of the pumping pipe 4, so that the water obtained by the water intake structure enters the pumping pipe 4 through the first one-way valve, and when the pumping device stops working and performs the extrusion work, the water in the pumping end 401 cannot flow into the water intake structure through the first one-way valve. At the same time, when the pumping device performs the extrusion work, the pressure in the pumping pipe 4 increases, so that the water in the pumping pipe 4 flows to the collection component through the second one-way valve, so as to realize the acquisition and collection of water sources when the pumping device performs the pumping action.

[0043] See also Figure 5 The pumping device includes a piston 5 that is sealed and slidable with the inner wall of the water pumping pipe 4, a movable shaft 6 is arranged along the axial direction of the piston 5, and a tooth plate 15 is formed on the end of the movable shaft 6 away from the piston 5;

[0044] It also includes a cylinder 2 fixedly mounted on the mounting frame 1 , and a movable end of the cylinder 2 is fixedly connected to the movable shaft 6 .

[0045] When the water pumping pipe 4 is moved above the water surface, the cylinder 2 is controlled to work. When the cylinder rod of the cylinder 2 contracts, it drives the movable shaft 6 to move upward relative to the water pumping pipe 4, so that the pressure in the water pumping pipe 4 is reduced, and the water is transported to the water pumping pipe 4 through the water intake structure. At this time, the cylinder rod of the cylinder 2 is controlled to extend, and the movable shaft 6 drives the piston 5 to move downward. The piston 5 squeezes the water in the water pumping pipe 4, so that the water in the water pumping pipe 4 is transported to the collection component through the outlet pipe 9 to realize the sampling of the water source.

[0046] The piston 5 is made of rubber material to prevent the piston 5 from being corroded during long-term use, thereby contaminating the collected water, and to prevent leakage during the process of pumping and pressing water through the pumping pipe 5.

[0047] See also Figure 4 , Figure 5 The threaded pusher includes a screw rod 10 rotatably mounted on the water pumping pipe 4 . The screw rod 10 is arranged in a direction parallel to the axis of the water pumping pipe 4 . A threaded sleeve 11 is threadedly connected to the screw rod 10 .

[0048] The water intake structure includes a plug-in tube 7 and an internal tube 8. One end of the plug-in tube 7 is detachably connected to the bottom of the water pumping end 401 and is arranged along the axial direction of the water pumping end 401. The internal tube 8 is slidably arranged in the plug-in tube 7. The end of the internal tube 8 away from the plug-in tube 7 is connected to the threaded sleeve 11 through a connecting ring 12.

[0049] In detail, when the movable shaft 6 drives the piston 5 to move downward, the water in the water pumping pipe 4 is squeezed into the collection component. At this time, the movable shaft 6 moves to drive the linkage part to work, and the linkage part drives the screw rod 10 to rotate through the transmission. When the screw rod 10 rotates, it drives the threaded sleeve 11 to make a linear motion along the axial direction of the screw rod 10, so that the threaded sleeve 11 moves relative to the water pumping pipe 4, and drives the built-in tube 8 to move synchronously when moving. At this time, the built-in tube 8 moves relative to the plug-in tube 7 to realize the sliding connection between the built-in tube 8 and the plug-in tube 7, and has no effect on the built-in tube 8 and the cylindrical cavity in the plug-in tube 7, thereby changing the depth of the built-in tube 8 inserted underwater, so that water of different depths can be extracted from the water pumping pipe 4.

[0050] See also Figure 7 The collection component includes a placement table 13 rotatably mounted on the side end of the water pumping pipe 4, a tray 25 is sleeved on the rotating shaft of the placement table 13, and a strip groove is formed on the tray 25. A plurality of sampling tubes 14 are arranged equidistantly along the radial direction on the placement table 13, and the sampling tubes 14 are detachably connected to the placement table 13.

[0051] The movable shaft 6 drives the piston 4 to move upwards. When the water is pumped out of the water pumping pipe 4, the movable shaft 6 moves to drive the linkage member to work. The linkage member drives the placement table 13 to rotate through transmission, and the rotation angle is limited, thereby ensuring that when the water is pressurized in the water pumping pipe 4, one of the sampling tubes 14 is always aligned with the outlet tube 9 to complete the water source collection work.

[0052] It should be noted that a hexagonal crimping connection is adopted between the placement table 13 and the sampling tube 14. A hexagonal protrusion is provided on the placement table 13, and a hexagonal groove adapted to the protrusion is provided on the bottom of the sampling tube 14. One hexagonal structure is inserted into another hexagonal structure to realize a detachable connection between the placement table 13 and the sampling tube 14, and the firmness and stability of the connection can be ensured during the connection.

[0053] See also Figure 7 , Figure 8 The linkage member includes a first transmission shaft 16 rotatably mounted on the mounting frame 1, and a first gear 24 meshing with the toothed plate 15 is symmetrically arranged on the first transmission shaft 16;

[0054] It also includes intermittent transmission members arranged on both sides of the first transmission shaft 16 .

[0055] The intermittent transmission member includes a second transmission shaft 20 rotatably mounted on the mounting frame 1, a ratchet 17 fixedly connected to the second transmission shaft 20, the ratchet 17 meshing with a second gear 18 fixedly mounted on the first transmission shaft 16, the second transmission shaft 20 is connected to a third transmission shaft 21 rotatably mounted on the water pumping pipe 4 through a bevel gear set 19, and the third transmission shaft 21 is connected to the screw 10 through a first belt 26.

[0056] A fourth transmission shaft 22 is rotatably mounted on the water pumping pipe 4, and the fourth transmission shaft 22 is connected to the third transmission shaft 21 via a second belt 27. A turntable 23 is fixedly mounted on the fourth transmission shaft 22, and a convex column 2301 rotatably matched with the strip groove is disposed at an eccentric position of the turntable 23.

[0057] Specifically, when the movable shaft 6 moves downward, the pressure in the water pump 4 decreases to carry out water extraction. At this time, the tooth plate 15 on the movable shaft 6 meshes with the first gear 24 to realize the counterclockwise rotation of the first transmission shaft 16. When the first transmission shaft 16 rotates, it drives the second gears 18 at both ends to rotate synchronously. The second gear 18 generates a force on the ratchet 17 when rotating, wherein a plurality of slots are arranged along the circumference of the ratchet 17, and a ratchet bar is rotatably installed in the slot. One end of the ratchet bar is abutted with a torsion spring, and the other end of the torsion spring abuts with the inner wall of the slot. The ratchet bars on the two ratchet wheels 17 are oriented in opposite directions. When the first transmission shaft 16 rotates counterclockwise, it can drive one of the ratchet wheels 17 to rotate, and when the first transmission shaft 16 rotates clockwise, it can drive the other ratchet wheel 17 to rotate. The ratchet wheel 17 interacts with the second gear 18 to realize the requirement of gap rotation of the two ratchet wheels 17.

[0058] Among them, when the ratchet 17 rotates clockwise, it drives the second transmission shaft 20 to rotate accordingly. Under the action of the bevel gear set 19, the third transmission shaft 21 is rotated. When the third transmission shaft 21 rotates, it drives the screw 10 to rotate through the first belt 26 to realize the rotation of the screw 10 (at this time, water is pressurized in the water pumping pipe 4). Under the action of the first belt 26, the transmission ratio between the screw 10 and the third transmission shaft 21 is changed, so that when water is pressurized in the water pumping pipe 4, the screw 10 can rotate a certain angle to avoid the position of the built-in tube 8 changing too short, resulting in inaccurate inspection of the water sample taken.

[0059] When the ratchet 17 rotates counterclockwise (water is being drawn from the water pipe 4 at this time), the third transmission shaft 21 is driven to rotate. When the third transmission shaft 21 rotates, the fourth transmission shaft 22 is driven to rotate through the second belt 27. When the fourth transmission shaft 22 rotates, the turntable 23 thereon follows the rotation. After the convex column 2301 on the turntable 23 rotates into the strip groove on the tray 25, the tray 25 is squeezed, causing the tray 25 to rotate, thereby driving the placement table 13 to rotate synchronously to change the position of the sampling tube 14 and prepare for the next water sample collection.

[0060] It should be noted that the number of strip grooves on the tray 25 is the same as the number of sampling tubes 14 on the placement table 13, to ensure that when water is pressurized in the pumping pipe 4, one of the sampling tubes 14 is always aligned with the outlet pipe 9 to complete the water source collection work.

[0061] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0062] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains 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 hydrogeological detection sampler, comprising a mounting frame and a receiving frame fixedly mounted on the mounting frame, the receiving frame being fixedly connected to a water pumping pipe, the water pumping pipe being provided with a pumping device, characterized in that ； It also includes a water intake structure installed at the bottom of the water pumping pipe, and the water intake structure is communicated with the inner side of the water pumping pipe; A collection component is installed outside the water pumping pipe and communicated with the inner side of the water pumping pipe. A threaded pusher, installed on the water pumping pipe and connected to the water intake structure; A linkage member is respectively connected to the threaded push member and the collection component, and when the pumping device performs water pressure work, the water intake depth of the water intake structure is adjusted, and the pumping device performs the water pumping action to control the collection position of the collection component to change; The bottom of the water pumping pipe is respectively provided with a water pumping end and a water outlet end, and both the water pumping end and the water outlet end are provided with a one-way valve; The pumping device comprises a piston which is sealed and slidable with the inner wall of the water pumping pipe, a movable shaft is arranged along the axial direction of the piston, and a tooth plate is formed on one end of the movable shaft away from the piston; It also includes a cylinder fixedly mounted on the mounting frame, wherein the movable end of the cylinder is fixedly connected to the movable shaft; The threaded pusher comprises a screw rod rotatably mounted on the water pumping pipe, the screw rod is arranged in a direction parallel to the axis of the water pumping pipe, and a threaded sleeve is threadedly connected to the screw rod; The collection assembly comprises a placing table rotatably mounted on the side end of the water pumping pipe, a tray is sleeved on the rotating shaft of the placing table, a strip groove is formed on the tray, a plurality of sampling tubes are arranged equidistantly in the radial direction on the placing table, and the sampling tubes are detachably connected to the placing table; The linkage member comprises a first transmission shaft rotatably mounted on the mounting frame, and the first transmission shaft is symmetrically provided with a first gear meshing with the toothed plate; It also includes intermittent transmission members arranged on both sides of the first transmission shaft; The intermittent transmission member comprises a second transmission shaft 1 and a second transmission shaft 2 rotatably mounted on the mounting frame, a ratchet 1 and a ratchet 2 are respectively fixedly connected to the second transmission shaft 1 and the second transmission shaft 2, and the ratchet 1 and the ratchet 2 are respectively meshed with a second gear 1 and a second gear 2 fixedly mounted on the first transmission shaft, The ratchet teeth on the first ratchet and the second ratchet are oriented in opposite directions; The second transmission shaft 1 and the second transmission shaft 2 are connected to the third transmission shaft 1 and the third transmission shaft 2 rotatably mounted on the water pumping pipe through the bevel gear set 1 and the bevel gear set 2 respectively, and the third transmission shaft 1 is connected to the screw rod through the first belt; a fourth transmission shaft is rotatably mounted on the water pumping pipe, and the fourth transmission shaft is connected to the third transmission shaft 2 through the second belt; a rotating disk is fixedly arranged on the fourth transmission shaft, and a convex column rotatably matched with the strip groove is arranged at the eccentric position of the rotating disk; The water intake structure includes a plug-in pipe and a built-in pipe, one end of the plug-in pipe is detachably connected to the bottom of the water pumping end and is arranged along the axial direction of the water pumping end; The built-in tube is slidably arranged in the plug-in tube, and one end of the built-in tube away from the plug-in tube is connected to the threaded sleeve through a connecting ring; When working, the water pumping pipe is moved above the water surface, the cylinder rod of the control cylinder is contracted to drive the movable shaft to move upward relative to the water pumping pipe, and the water is transported into the water pumping pipe through the water intake structure. At this time, the cylinder rod of the control cylinder is extended, and the piston squeezes the water in the water pumping pipe, so that the water in the water pumping pipe is transported to the collection component through the outlet pipe; When the movable shaft drives the piston to move downward, the water in the water pumping pipe is squeezed into the collection component. At this time, the movable shaft moves to drive the linkage part to work. The linkage part drives the screw rod to rotate through the transmission. When the screw rod rotates, it drives the threaded sleeve to move linearly along the axial direction of the screw rod, so that the threaded sleeve moves relative to the water pumping pipe, and drives the built-in pipe to move synchronously during the movement, thereby changing the depth of the built-in pipe inserted into the water, so as to realize the extraction of water at different depths in the water pumping pipe. At the same time, when the movable shaft moves downward, the toothed plate on the movable shaft meshes with the first gear, and the first transmission shaft rotates counterclockwise to drive the second gear 1 and the second gear 2 at both ends to rotate synchronously. When the second gear 1 rotates, it exerts a force on the ratchet wheel 1, driving the ratchet wheel 1 to rotate. When the first transmission shaft rotates clockwise, it drives the ratchet wheel 2 to rotate. When the ratchet wheel 1 rotates clockwise, it drives the second transmission shaft 1 to rotate accordingly, and drives the third transmission shaft 1 to rotate under the action of the bevel gear set 1. When the third transmission shaft 1 rotates, the screw rod is driven to rotate through the first belt, so that the transmission ratio between the screw rod and the third transmission shaft 1 changes, so that when the water is pressed in the water pumping pipe, the screw rod can rotate a certain angle to avoid the distance of the built-in pipe position change being too short, which is conducive to sampling and detection; When the ratchet wheel 2 rotates counterclockwise, it drives the third transmission shaft 2 to rotate. When the third transmission shaft 2 rotates, the fourth transmission shaft is driven to rotate through the second belt. When the fourth transmission shaft rotates, the turntable thereon follows the rotation. After the convex column on the turntable rotates into the strip groove on the tray, it squeezes the tray, causing the tray to rotate, thereby driving the placement table to rotate synchronously to change the position of the sampling tube and prepare for the next water sample collection.

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