Sampling device for underground water pollution monitoring

Abstract

The invention relates to the technical field of water body monitoring sampling, in particular to a sampling device for underground water pollution monitoring, which comprises a bottom plate, a fixing frame is fixed on the upper surface of the bottom plate, a support plate is arranged in the fixing frame, a sampling mechanism is mounted at the bottom of the support plate, and two sides of the support plate penetrate through and extend into two sides of the fixing frame. A through hole is formed in the position, corresponding to the sampling mechanism, in the bottom plate, two first lead screws are symmetrically connected into the two sides of the supporting plate in a penetrating mode, and first through grooves are formed in the positions, corresponding to the first lead screws, of the inner side of the fixing frame. Layered sampling is conducted on soil in a monitoring area through the sampling mechanism, so that detection research is facilitated, pollution is traced through cooperation with a water body in the hollow sampling barrel, water body pollution is treated more efficiently, a drill bit is matched to conduct multi-angle fixing on the bottom plate, the sampling position of the sampling mechanism is controlled, and the sampling accuracy is improved. Meanwhile, the moving frequency of the bottom plate is reduced, and the overall working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water body monitoring sampling, in particular to a sampling device for groundwater pollution monitoring. BACKGROUND

[0002] In the process of contaminated site redevelopment, comprehensive and accurate site investigation is very important to prevent and control ecological accidents and construction safety accidents caused by soil and groundwater pollution; For example, the prior art with publication number CN119309850AD discloses a sampling device for soil and groundwater pollution monitoring. The second water inlet hole is blocked by a sleeve to prevent a large amount of soil from entering the sampling cavity during drilling, thereby avoiding interference with water quality monitoring data and improving the accuracy of monitoring data. Meanwhile, the clamping block is clamped in the first water inlet hole to prevent soil from blocking the first water inlet hole during drilling, thereby preventing the first water inlet hole from being blocked when collecting groundwater, so that the groundwater cannot enter the sampling cavity. However, the device cannot form multiple sampling effects when sampling the soil in the monitoring area, making it difficult to trace the pollution and unable to fix the bottom plate at any angle as required. In view of the above technical defects, a solution is proposed. SUMMARY

[0003] The present application aims to solve the problem that the prior art sampling device for groundwater pollution monitoring cannot form multiple sampling effects when sampling the soil in the monitoring area, making it difficult to trace the pollution and unable to fix the bottom plate at any angle as required. Therefore, a sampling device for groundwater pollution monitoring is proposed.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a sampling device for groundwater pollution monitoring, comprising a bottom plate, a fixed frame is fixed on the upper surface of the bottom plate, a support plate is arranged in the fixed frame, a sampling mechanism is installed at the bottom of the support plate, and the two sides of the support plate extend into the inside of the two sides of the fixed frame, a through hole is formed in the inside of the bottom plate corresponding to the position of the sampling mechanism, two first lead screws are symmetrically connected in the inside of the two sides of the support plate, a first through slot is formed in the inside of the fixed frame corresponding to the position of the first lead screw, a second pulley is fixed at the top end of the first lead screw, two second pulleys are rotatably connected by a second belt, and a second motor is fixed at the top end of one of the second pulleys and extends into the outside of the fixed frame.

[0005] Further, the sampling mechanism comprises a first motor fixed to the upper surface of the support plate, a transmission end of the first motor penetrating and extending to the bottom of the support plate and fixed with a sleeve, a plurality of sleeves fixed equidistantly at the bottom end of the sleeve, a second worm gear rotatably connected to the inside top end of the sleeve, a second worm fixed at the rear end of the second worm gear and rotatably connected to the inside of the sleeve, a second knob fixed at one side of the second worm and penetrating and extending to the outside of the sleeve, a second screw rod fixed at the bottom of the second worm gear, an axle sleeve fixed to the inside of the sleeve and sleeved at the bottom outer layer of the second screw rod, two screw sleeves sleeved at the outer layer of the second screw rod, two fixed blocks fixed symmetrically at the outer layer of both sides of the screw sleeve and the axle sleeve, a connecting rod rotatably connected to one side of the fixed block, a movable plate rotatably connected to one side of the connecting rod, and a side sampling box fixed to one side of the movable plate.

[0006] Further, the inside of the second screw rod is provided with a hollow sampling cylinder, two one-way flaps rotatably connected symmetrically at both sides of the bottom of the hollow sampling cylinder, the bottom of the hollow sampling cylinder penetrating and extending to the outside of the sleeve, a fixed disc fixed to the bottom inner layer of the sleeve, two clamping blocks symmetrically slidably connected at both sides of the inside of the fixed disc, and a rotating disc rotatably connected to the upper surface of the fixed disc, a sliding block fixed to the upper surface of the clamping block and penetrating and extending to the outside of the rotating disc, and an arc-shaped sliding groove formed at the inside of the rotating disc corresponding to the position of the sliding block.

[0007] Further, holes are formed at the inside of the rotating disc and the fixed disc corresponding to the position of the hollow sampling cylinder, a clamping groove is formed at the bottom of the hollow sampling cylinder corresponding to the position of the clamping block, a push piece is fixed to the outside of the rotating disc and penetrates and extends to the outside of the sleeve, and a second through groove is formed at the outer layer of the sleeve corresponding to the position of the push piece.

[0008] Further, first rotation shafts are rotatably connected symmetrically at the front and rear ends of the inside of the bottom plate, two first worm gears are symmetrically sleeved at the outer layer of both sides of the first rotation shaft, a first worm wheel is arranged at the front end of the first worm gear, a first belt pulley is fixed to one side of the first rotation shaft and penetrates and extends to the outside of the bottom plate, a first belt is rotatably connected between the two first belt pulleys, and a first knob is fixed to one side of one of the first belt pulleys.

[0009] Further, a fixed rod penetrates and extends to the outside of the bottom plate and is fixed at the bottom of the first worm wheel, a lifting rod is sleeved at the bottom outer layer of the fixed rod, a drill bit is fixed to the bottom of the lifting rod, a second rotation shaft is rotatably connected to the inside bottom layer of the lifting rod, a first bevel gear is sleeved at the outer layer of the second rotation shaft, a third knob is fixed to one side of the second rotation shaft and penetrates and extends to the outside of the lifting rod, a second bevel gear is arranged above the first bevel gear, a third screw rod is fixed to the upper surface of the second bevel gear, and the top end of the third screw rod penetrates and extends to the inside of the fixed rod.

[0010] Therefore, by adopting the technical scheme, the present application has the following beneficial effects: In the present application, when sampling, the sleeve is driven to rotate by the first motor, and the soil in the monitoring area is drilled by the soil breaking piece. During the continuous drilling process, the water in the monitoring area extrudes the one-way flap into the hollow sampling cylinder, thereby forming a sampling effect. At the same time, rotating the second knob drives the first lead screw to rotate by cooperating with the second worm gear and the second worm. The rotation of the first lead screw drives the screw sleeve to move, and the movement of the screw sleeve drives the connecting rod to swing, thereby driving the movable plate to extend, and then driving the side sampling box to embed into the soil in the monitoring area. At this time, the side sampling box is scraped against the soil in the monitoring area by the rotation of the sleeve, thereby forming stratified sampling, and the soil in the monitoring area is well separated to avoid mixing and causing subsequent detection inconvenience. The water in the hollow sampling cylinder is used for pollution tracing, and the two sampling methods are used in combination to more efficiently control water pollution. In the present application, the first rotating shaft is driven to rotate by the first knob cooperating with the first belt and the first belt pulley, and then the fixed rod is driven to rotate by cooperating with the first worm gear and the first worm, and the lifting rod is driven to rotate by the rotation of the fixed rod, and then the drill bit is drilled into the soil in the monitoring area, thereby fixing the bottom plate. The third rotating shaft is driven to rotate by rotating the third knob, and the third lead screw is driven to rotate by cooperating with the first bevel gear and the second bevel gear, and the third lead screw is driven to rotate by cooperating with the fixed plate to form a lifting effect. The angle of the support surface of the bottom plate is adjusted by rotating the third knob at different positions, so that the bottom plate can be placed stably even in uneven areas. At the same time, if sampling is needed at different positions in a certain area, the bottom plate needs to be moved multiple times, which is relatively inconvenient. The sampling position of the sampling mechanism is controlled by rotating the third knob to tilt the bottom plate, thereby reducing the number of times the bottom plate is moved and improving the overall work efficiency. In summary, the present application uses the sampling mechanism to stratify the soil in the monitoring area, thereby facilitating detection research, and then tracing the pollution by cooperating with the water in the hollow sampling cylinder, thereby more efficiently controlling water pollution. The drill bit is used to fix the bottom plate at multiple angles to control the sampling position of the sampling mechanism, while reducing the number of times the bottom plate is moved and improving the overall work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the structure inside the fixing frame of the present application; Figure 3 It is a schematic diagram of the structure of the sampling mechanism of the present application; Figure 4Structure diagram of the bottom of the sleeve of the application; Figure 5 Combined view of the rotating disc and the fixed disc of the application; Figure 6 Structure diagram of the bottom of the hollow sampling cylinder of the application; Figure 7 Structure diagram of the inside of the bottom plate of the application; Figure 8 Structure diagram of the inside of the lifting cylinder of the application.

[0012] Reference signs: 1, bottom plate; 2, through hole; 3, lifting rod; 4, first knob; 5, first belt; 6, first belt pulley; 7, sampling mechanism; 8, support plate; 9, fixed frame; 10, first motor; 11, second motor; 12, first screw rod; 13, first through slot; 14, sleeve; 15, soil breaking piece; 16, second belt pulley; 17, second knob; 18, second belt; 19, first worm; 20, first rotating shaft; 21, first worm wheel; 22, fixed rod; 23, drill bit; 24, second worm wheel; 25, second worm; 26, screw sleeve; 27, second screw rod; 28, connecting rod; 29, shaft sleeve; 30, hollow sampling cylinder; 31, side sampling box; 32, movable plate; 33, clamping groove; 34, third screw rod; 35, second rotating shaft; 36, first bevel gear; 37, second bevel gear; 38, second through slot; 39, push piece; 40, arc-shaped sliding groove; 41, rotating disc; 42, sliding block; 43, fixed disc; 44, clamping block; 45, third knob; 46, fixed block; 47, hole slot; 48, one-way flap. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application. EMBODIMENT

[0014] The sampling device for monitoring underground water pollution in the prior art has the problem that most of the sampling devices have single sampling mode, the soil in the monitoring area is easily mixed together, it is inconvenient to conduct targeted research and detection, and it is difficult to trace the pollution.

[0015] As Figures 1-6As shown, a sampling device for groundwater pollution monitoring, including the bottom plate 1, the upper surface of the bottom plate 1 is fixed with the fixed frame 9, the inside of the fixed frame 9 is provided with the supporting plate 8, the bottom of the supporting plate 8 is installed with the sampling mechanism 7, the sampling mechanism 7 includes the first motor 10 fixed on the upper surface of the supporting plate 8, the transmission end of the first motor 10 penetrates and extends to the bottom of the supporting plate 8 and is fixed with the sleeve 14, the bottom end of the sleeve 14 is equidistantly fixed with several sleeves 14, and the inside top end of the sleeve 14 is rotatably connected with the second worm 24, the rear end of the second worm 24 is rotatably connected with the second worm 25 in the inside of the sleeve 14, and the side of the second worm 25 penetrates and extends to the outside of the sleeve 14 and is fixed with the second knob 17; The bottom of the second worm 24 is fixed with the second lead screw 27, the inside of the second lead screw 27 is a hollow structure, the hollow sampling cylinder 30 is accommodated through the second lead screw 27, so as to facilitate sampling of the soil in the monitoring area, the bottom of the second lead screw 27 is sleeved with the shaft sleeve 29 fixed in the inside of the sleeve 14, the outside of the second lead screw 27 is sleeved with two screw sleeves 26, the outside of the two screw sleeves 26 is symmetrically fixed with two fixed blocks 46 on both sides, one side of the fixed block 46 is rotatably connected with the connecting rod 28, the same side of the connecting rod 28 is rotatably connected with the movable plate 32 on one side, the movable plate 32 is fixed with the side sampling box 31 on one side, the sleeve 14 is provided with a notch at a position corresponding to the movable plate 32, when the movable plate 32 is stretched, the notch is stretched out of the sleeve 14, and then the side sampling box 31 is embedded in the soil of the monitoring area; The inside of the second lead screw 27 is provided with the hollow sampling cylinder 30, the bottom of the hollow sampling cylinder 30 is rotatably connected with two one-way flaps 48 on both sides, the bottom of the hollow sampling cylinder 30 is flush with the bottom of the soil breaking piece 15, when the soil is broken by the soil breaking piece 15, the hollow sampling cylinder 30 simultaneously forms a sampling effect on the soil of the monitoring area, the bottom of the hollow sampling cylinder 30 penetrates and extends to the outside of the sleeve 14, the bottom of the sleeve 14 is fixed with the fixed disc 43, the inside of the fixed disc 43 is symmetrically slidably connected with two clamping blocks 44 on both sides, and the upper surface of the fixed disc 43 is rotatably connected with the rotating disc 41, the upper surface of the clamping block 44 is fixed with the sliding block 42 penetrating and extending to the outside of the rotating disc 41, and the inside of the rotating disc 41 is provided with an arc-shaped sliding groove 40 at a position corresponding to the sliding block 42; The rotating disc 41 and the fixed disc 43 are provided with a hole groove 47 corresponding to the position of the hollow sampling cylinder 30, and the bottom of the hollow sampling cylinder 30 is provided with a clamping groove 33 corresponding to the position of the clamping block 44. The clamping block 44 and the clamping groove 33 are matched with each other to form a clamping fixing effect on the hollow sampling cylinder 30, so that the hollow sampling cylinder 30 is convenient to disassemble. When the sampling in the hollow sampling cylinder 30 is completed, the clamping state between the clamping groove 33 and the clamping block 44 is released, and then the hollow sampling cylinder 30 is convenient to take out. The soil in the monitoring area in the hollow sampling cylinder 30 can be taken out. The rotating disc 41 is fixed with a push piece 39 penetrating and extending to the outside of the sleeve 14. The sleeve 14 is provided with a second through groove 38 corresponding to the position of the push piece 39. The support plate 8 penetrates and extends to the inside of the fixed frame 9, and the bottom plate 1 is provided with a through hole 2 corresponding to the position of the sampling mechanism 7. The inside of the support plate 8 is symmetrically provided with two first lead screws 12 penetrating and connecting. The inside of the fixed frame 9 is provided with a first through groove 13 corresponding to the position of the first lead screw 12. The top end of the first lead screw 12 is fixed with a second belt pulley 16. The two second belt pulleys 16 are rotationally connected by a second belt 18. The top end of one of the second belt pulleys 16 penetrates and extends to the outside of the fixed frame 9 and is fixed with a second motor 11.

[0016] When sampling, the first motor 10 drives the sleeve 14 to rotate, and the second motor 11 drives the first lead screw 12 to rotate by cooperating with the second belt pulley 16 and the second belt 18. The first lead screw 12 drives the support plate 8 to descend, and the support plate 8 drives the sleeve 14 to descend, thereby forming a drilling effect. During drilling, the soil in the monitoring area is collected and sampled by the soil breaking piece 15. When the target depth is reached, the second knob 17 is rotated to drive the second lead screw 27 to rotate by cooperating with the second worm 25 and the second worm wheel 24. The second lead screw 27 drives the screw sleeve 26 to move, and the screw sleeve 26 drives the connecting rod 28 to swing, thereby driving the movable plate 32 to extend. The movable plate 32 drives the side sampling box 31 to embed into the soil in the monitoring area. At this time, the soil in the monitoring area is scraped and sampled by the rotation of the sleeve 14, and a layered effect is formed. At the same time, when the hollow sampling cylinder 30 enters the water body, the one-way flap 48 is opened by the water pressure. When the water body completely enters the inside of the hollow sampling cylinder 30, it cannot be opened again due to the internal pressure, thereby collecting and sampling the water body; After the sampling is completed, the first motor 10 is started to drive the sleeve 14 to rise, the sleeve 14 is raised, the push piece 39 is actuated to drive the rotating disc 41 to rotate, the rotating disc 41 rotates to cooperate with the arc-shaped sliding groove 40 and the sliding block 42 to drive the clamping block 44 to move, and the state between the sleeve 14 and the hollow sampling cylinder 30 is controlled by the movement of the clamping block 44. After the clamping state of the sleeve 14 and the hollow sampling cylinder 30 is released, the hollow sampling cylinder 30 can be removed, and the soil in the monitoring area inside the hollow sampling cylinder 30 can be taken out at the same time as the soil in the monitoring area inside the side sampling box 31 is taken out for detection and analysis, so as to improve the accuracy of detection and analysis. Embodiment

[0017] The embodiment is to solve the problem that the prior art sampling device for groundwater pollution monitoring is difficult to be fixed at a required angle due to different sampling areas, and needs to be moved multiple times for sampling the target area during sampling, which is inconvenient to use.

[0018] As shown in Figures 7-8 the embodiment is a sampling device for groundwater pollution monitoring, and the inside of the bottom plate 1 is symmetrically connected with a first rotating shaft 20 at the front and rear ends, the outside of the two sides of the first rotating shaft 20 is symmetrically sleeved with two first worms 19, the front end of the first worm 19 is provided with a first worm wheel 21, one side of the first rotating shaft 20 penetrates and extends to the outside of the bottom plate 1 and is fixed with a first pulley 6, the first pulley 6 is rotatably connected with a first belt 5 between the two first pulleys 6, one side of one of the first pulleys 6 is fixed with a first knob 4, the bottom of the first worm wheel 21 is fixed with a fixed rod 22 penetrating and extending to the outside of the bottom plate 1, the outside of the bottom end of the fixed rod 22 is sleeved with a lifting rod 3, the bottom of the lifting rod 3 is fixed with a drill bit 23, the inside of the bottom layer of the lifting rod 3 is rotatably connected with a second rotating shaft 35, the outside of the second rotating shaft 35 is sleeved with a first bevel gear 36, one side of the second rotating shaft 35 penetrates and extends to the outside of the lifting rod 3 and is fixed with a third knob 45, the upper side of the first bevel gear 36 is provided with a second bevel gear 37, the upper surface of the second bevel gear 37 is fixed with a third screw rod 34, the top end of the third screw rod 34 penetrates and extends to the inside of the fixed rod 22, the inside of the fixed rod 22 is provided with a matching internal thread at the position corresponding to the third screw rod 34, and the fixed rod 22 is lifted and moved by the rotation of the third screw rod 34; Rotating the first knob 4 matches the first belt 5 with the first pulley 6 to drive the two first rotating shafts 20 to rotate, the first rotating shaft 20 drives the first worm 19 to rotate, the first worm 19 drives the first worm wheel 21 to rotate, the first worm wheel 21 drives the fixed rod 22 to rotate, the fixed rod 22 drives the lifting rod 3 to rotate, the lifting rod 3 drives the drill bit 23 to drill into the soil in the monitoring area, so as to form fixation, after the fixation is completed, rotating the third knob 45 drives the second rotating shaft 35 to rotate, the second rotating shaft 35 matches the first bevel gear 36 with the second bevel gear 37 to drive the third screw rod 34, and the third screw rod 34 drives the fixed rod 22 to ascend and descend, so as to adjust the support angle of the bottom plate 1, and facilitate the control of the subsequent sampling direction and angle.

[0019] The working process and principle of the application are as follows: Step one: when sampling, start the first motor 10 to drive the sleeve 14 to rotate, and start the second motor 11 to match the second pulley 16 with the second belt 18 to drive the first screw rod 12 to rotate, the first screw rod 12 drives the support plate 8 to descend, the support plate 8 drives the sleeve 14 to descend, thereby forming a drilling effect, in the drilling process, the soil breaking piece 15 collects and samples the soil in the monitoring area, when descending to the target depth, rotating the second knob 17 matches the second worm 25 with the second worm wheel 24 to drive the second screw rod 27 to rotate, the second screw rod 27 drives the screw sleeve 26 to move, the screw sleeve 26 drives the connecting rod 28 to swing, thereby driving the movable plate 32 to extend, the movable plate 32 drives the side sampling box 31 to embed into the soil in the monitoring area, at this time, the rotation of the sleeve 14 scrapes and samples the soil in the monitoring area, and forms a layered effect, at the same time, when the hollow sampling cylinder 30 enters the water body, the one-way flap 48 is opened by the extrusion of the water body, when the water body completely enters the inside of the hollow sampling cylinder 30, it cannot be opened again due to the internal pressure, thereby collecting and sampling the water body; After sampling is completed, start the first motor 10 to drive the sleeve 14 to rise, after the sleeve 14 rises, the push piece 39 drives the rotating disc 41 to rotate, the rotating disc 41 rotates to match the arc-shaped sliding groove 40 with the sliding block 42 to drive the clamping block 44 to move, the clamping block 44 moves to control the state between the sleeve 14 and the hollow sampling cylinder 30, after the clamping state of the sleeve 14 and the hollow sampling cylinder 30 is released, the hollow sampling cylinder 30 can be taken out, then the soil in the monitoring area in the hollow sampling cylinder 30 can be taken out, and the soil in the monitoring area in the side sampling box 31 is detected and analyzed at the same time, so as to improve the accuracy of detection and analysis.

[0020] Step two: rotate the first knob 4 to match the first belt 5 with the first pulley 6 to drive the two first rotating shafts 20 to rotate, the first rotating shaft 20 drives the first worm 19 to rotate, the first worm 19 drives the first worm wheel 21 to rotate, the first worm wheel 21 drives the fixed rod 22 to rotate, the fixed rod 22 drives the lifting rod 3 to rotate, the lifting rod 3 drives the drill bit 23 to drill into the soil inside the monitoring area, so as to form fixation, after the fixation is completed, rotate the third knob 45 to drive the second rotating shaft 35 to rotate, the second rotating shaft 35 cooperates with the first bevel gear 36 and the second bevel gear 37 to drive the third screw rod 34, and the third screw rod 34 drives the fixed rod 22 to ascend and descend, so as to adjust the supporting angle of the bottom plate 1, and facilitate the control of the subsequent sampling direction and angle.

[0021] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A sampling device for groundwater pollution monitoring, comprising a bottom plate, characterized in that: A fixing frame is fixed to the upper surface of the base plate, a support plate is provided inside the fixing frame, a sampling mechanism is installed at the bottom of the support plate, and both sides of the support plate pass through and extend to the inside of both sides of the fixing frame, a through hole is provided in the inside of the base plate at the position corresponding to the sampling mechanism, two first screw rods are symmetrically passed through and connected to the inside of the two sides of the support plate, a first through groove is provided on the inner side of the fixing frame at the position corresponding to the first screw rod, a second pulley is fixed on the top end of the first screw rod, and the two second pulleys are rotatably connected by a second belt, and the top end of one of the second pulleys passes through and extends to the outside of the fixing frame where a second motor is fixed.

2. A sampling device for groundwater pollution monitoring according to claim 1, characterized in that: The sampling mechanism includes a first motor fixed on the upper surface of the support plate, a transmission end of the first motor passes through and extends to the bottom of the support plate where a sleeve is fixed, a plurality of sleeves are fixed at equal distances on the bottom end of the sleeve, and the inner top end of the sleeve is rotatably connected to a second worm gear, a rear end of the second worm gear is provided with a second worm screw rotatably connected to the inside of the sleeve, one side of the second worm screw passes through and extends to the outside of the sleeve where a second knob is fixed, and a second screw is fixed to the bottom of the second worm gear.

3. The sampling device for groundwater pollution monitoring according to claim 2, characterized in that: The bottom outer layer of the second screw rod is sleeved with a shaft sleeve fixed inside the sleeve, and the outer layer of the second screw rod is sleeved with two threaded sleeves. Two fixed blocks are symmetrically fixed on both sides of the threaded sleeve and the outer layer of the shaft sleeve. One side of the fixed block is rotatably connected to a connecting rod, and one side of the connecting rod on the same side is rotatably connected to a movable plate, and a side sampling box is fixed to one side of the movable plate.

4. The sampling device for groundwater pollution monitoring according to claim 2, characterized in that: A hollow sampling cylinder is provided inside the second screw rod, the bottom of the hollow sampling cylinder passes through and extends to the outside of the sleeve, and two one-way flaps are symmetrically connected to the bottom of the hollow sampling cylinder for rotation. A fixed disk is fixed to the inner layer of the bottom of the sleeve, and two clamping blocks are symmetrically connected to the inside of the fixed disk for sliding movement, and the upper surface of the fixed disk is rotatably connected to the rotating disk, and a slider that passes through and extends to the outside of the rotating disk is fixed on the upper surface of the clamping block, and an arc-shaped sliding groove is provided inside the rotating disk at the position corresponding to the slider.

5. The sampling device for groundwater pollution monitoring according to claim 4, characterized in that: The rotating disk and the fixed disk are both provided with holes at positions corresponding to the hollow sampling cylinder, the bottom of the hollow sampling cylinder is provided with a slot at a position corresponding to the block, the outer side of the rotating disk is fixed with a paddle that passes through and extends to the outside of the sleeve, and the outer layer of the sleeve is provided with a second through slot at the position corresponding to the paddle.

6. The sampling device for groundwater pollution monitoring according to claim 1, characterized in that: The front and rear ends of the interior of the base plate are symmetrically connected to the first rotating shaft, and two first worms are symmetrically sleeved on the outer layers of both sides of the first rotating shaft. A first worm wheel is provided at the front end of the first worm, and one side of the first rotating shaft passes through and extends to the outside of the base plate where a first pulley is fixed. A first belt is rotatably connected between the two first pulleys, and a first knob is fixed to one side of one of the first pulleys.

7. A sampling device for groundwater pollution monitoring according to claim 6, characterized in that: A fixing rod is fixed to the bottom of the first worm gear and passes through and extends to the outside of the base plate. A lifting rod is sleeved on the outer layer of the bottom end of the fixing rod. A drill bit is fixed to the bottom of the lifting rod, and the inner bottom layer of the lifting rod is rotatably connected to the second rotating shaft. The outer layer of the second rotating shaft is sleeved on the first bevel gear, and one side of the second rotating shaft passes through and extends to the outside of the lifting rod to be fixed with a third knob. A second bevel gear is provided above the first bevel gear, and a third screw rod is fixed on the upper surface of the second bevel gear, and the top end of the third screw rod passes through and extends to the inside of the fixing rod.

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