A sampling device for soil and groundwater pollution monitoring

Abstract

The present application discloses a sampling device for soil and groundwater pollution monitoring, which relates to the field of water sampling, and includes a top plate fixedly mounted on the top of a bottom plate through two side plates, and also includes a mounting plate arranged between the two side plates through a lifting mechanism and realizing longitudinal sliding, the lifting mechanism includes a driving wheel and a driven wheel respectively fixedly mounted on the top of two screws and driven by a belt, and soil taking components are arranged on the top and bottom of the mounting plate, and the soil taking components include an auger movably mounted on the top of the inner cavity of the sampling tube, and a water taking component is fixedly arranged at the bottom of the auger. In summary, the water inlet hole 2 of the device is blocked by a sleeve to prevent a large amount of soil from entering the sampling cavity during drilling, which interferes with the water quality monitoring data and improves the accuracy of the monitoring numerical control, and at the same time, the card block is connected to the water inlet hole 1 to prevent soil from being blocked in the water inlet hole 1 during drilling, and to prevent the water inlet hole 1 from being blocked when collecting groundwater, so that groundwater cannot enter the sampling cavity.

Description

Technical Field

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

[0002] With the rapid development of social economy and the continuous improvement of urbanization level, environmental pollution has become increasingly serious, seriously damaging the ecosystem and affecting the quality of life and health of human beings. In the process of redevelopment of contaminated sites, in order to prevent and control ecological accidents and construction safety accidents caused by soil and groundwater pollution, a comprehensive and accurate site investigation is very important.

[0003] For example, the patent with the patent authorization announcement number CN217586395U discloses a soil and groundwater sampling and detection device, which still has the following deficiencies in actual use:

[0004] The telescopic driving column of the above-mentioned device moves downward, driving the sampling structure to move downward. The conical head at the end of the sampling structure extends into the ground to drill a hole. The water collection port is always in an open state. When the conical head drills into a moist place in the stratum, the mud produced during drilling may be blocked in the water collection port, blocking the water collection port and making it impossible to collect groundwater. Summary of the invention

[0005] In order to improve the problem that the water collection port is blocked by mud and groundwater cannot be collected, the present application provides a sampling device for soil and groundwater pollution monitoring.

[0006] The present application provides a sampling device for soil and groundwater pollution monitoring, which adopts the following technical solution:

[0007] A sampling device for soil and groundwater pollution monitoring, comprising a top plate fixedly mounted on the top of a bottom plate through two side plates, and a mounting plate arranged between the two side plates through a lifting mechanism and realizing longitudinal sliding, the lifting mechanism comprising a driving wheel and a driven wheel respectively fixedly mounted on the top of two lead screws and driven by a belt, a soil sampling assembly is arranged on the top and bottom of the mounting plate, and the soil sampling assembly comprises an auger movably mounted on the top of the inner cavity of a sampling tube;

[0008] A water intake assembly is fixedly arranged at the bottom of the auger, and the water intake assembly includes a sleeve rotatably mounted on the surface of the drill body, and the drill body is fixedly mounted at the center of the bottom end of the auger, and the sleeve and the surface of the drill body are respectively provided with a plurality of mutually corresponding water inlet holes 1 and 2, and a plurality of the water inlet holes 2 are connected to the sampling chamber, and a plurality of chute grooves 2 are arranged on the surface of the drill body, and a plurality of blocks are slidably mounted in the chute grooves 2, and the shape of the water inlet hole 1 matches that of the block;

[0009] A floating plate for triggering a switch is fixedly connected to the top of the sampling cavity opened in the center of the drill body through a connecting rope, and an electromagnet is rotatably installed on the top of the cavity opened in the drill body, and the electromagnet realizes magnetic attraction with the sleeve when power is turned on.

[0010] By adopting the above technical scheme, by setting the cooperation between the lifting mechanism and the soil sampling component, the driving motor 2 works to drive the auger to rotate. Under the drive of the lifting mechanism, the auger moves downward when rotating, and the soil enters the sampling tube along the rotation of the auger. The uppermost soil is located at the upper end of the sampling tube, and goes downward in sequence to obtain underground soil at different depths. When groundwater is not collected, the water inlet hole 2 is blocked by the sleeve to avoid a large amount of soil entering the sampling chamber when water is collected, which interferes with the water quality monitoring data and improves the accuracy of the monitoring data. At the same time, the card block is connected to the water inlet hole 1 to avoid soil blocking the water inlet hole 1 when drilling, and to avoid the water inlet hole 1 being blocked so that groundwater cannot enter the sampling chamber.

[0011] Preferably, the drill body is fixedly installed at the bottom of the auger, a circular ring is fixedly connected to the surface of the drill body, an annular groove matching the shape of the circular ring is opened on the inner wall of the sleeve, the circular ring is located in the annular groove and rotates, and the inner wall of the sleeve abuts against the surface of the drill body.

[0012] By adopting the above technical solution, the sleeve is rotatably installed on the surface of the drill body under the cooperation of the circular ring and the annular groove, and the inner wall of the sleeve abuts against the drill surface, avoiding the generation of virtual position and preventing the sleeve from shaking when rotating.

[0013] Preferably, a filter screen can be detachably installed on the outer sides of the second inner cavities of the plurality of water inlet holes.

[0014] By adopting the above technical solution, when the sleeve rotates to correspond to water inlet hole one and water inlet hole two, groundwater enters the sampling chamber through water inlet hole one and water inlet hole two. By setting a filter screen on the outside of the inner cavity of water inlet hole two, impurities and particles in the water can be filtered out, thereby avoiding interference with water quality monitoring data and improving the accuracy of monitoring numerical control.

[0015] Preferably, a spring is fixedly connected to the inner side of the clamping block, and the inner end of the spring is fixedly connected to the inner side of the second inner cavity of the sliding groove.

[0016] By adopting the above technical solution, when the groundwater drilling holes are not collected, the sleeve is rotated to a plurality of water inlet holes corresponding to the card blocks, and then the plurality of card blocks are correspondingly connected to the plurality of water inlet holes to prevent soil from being stuck in the water inlet holes. Then, when collecting, the soil enters the sampling cavity to avoid interference with the water quality monitoring data and improve the accuracy of the monitoring numerical control.

[0017] Preferably, the switch is embedded in the top of the sampling cavity, and the bottom of the switch is flush with the top of the sampling cavity.

[0018] By adopting the above technical solution, since the switch is flush with the top of the sampling chamber, the floating plate can accurately trigger the switch when it floats up as the water level rises. This design reduces the problem of inaccurate triggering caused by position deviation.

[0019] Preferably, a cavity 2 is opened at the bottom of the inner cavity of the auger, and a motor 3 is fixedly installed at the bottom of the inner cavity of the cavity 2, whose output shaft movably passes through the side walls of the auger and the drill body and is fixedly connected to the center of the top of the electromagnet.

[0020] By adopting the above technical solution, motor three drives the electromagnet to rotate, and the electromagnet is energized to achieve magnetic attraction with the sleeve, thereby driving the sleeve to rotate on the surface of the drill body, thereby realizing the opening and closing of water inlet hole one and water inlet hole two.

[0021] Preferably, a thread groove is provided at the center of the bottom of the drill body, a drain port connected to the sampling cavity is provided at the top of the thread groove cavity, and a cover is threadedly connected to the inner surface of the thread groove.

[0022] By adopting the above technical solution, the collected groundwater can be discharged from the drain outlet by unscrewing the cover.

[0023] Preferably, a slide groove 1 is opened on the inner side of the two side plates, the two lead screws are rotatably installed between the top and bottom of the inner cavity of the two slide grooves 1, the surfaces of the two lead screws are threadedly connected with sliders, the two sliders are respectively located in the two slide grooves 1 and realize longitudinal sliding, the mounting plate is fixedly connected between the two sliders, and the top of the top plate is fixedly connected to a motor 1 whose output shaft movably passes through the side wall of the top plate and is fixedly connected to the top center of the driving wheel.

[0024] By adopting the above technical solution, the motor drives the active wheel to rotate, and the driven wheel is driven to rotate synchronously under the transmission of the belt, which indirectly drives the two lead screws to rotate, and then the sliders threaded on the two lead screws move downward synchronously, then the mounting plate fixedly connected between the two sliders moves downward, and the soil sampling assembly fixedly mounted on the mounting plate moves downward. When the auger rotates, it moves downward, and the soil enters the sampling barrel along the rotation of the auger. The uppermost soil is located at the upper end of the sampling barrel, and moves downward in sequence to obtain underground soil at different depths.

[0025] Preferably, the top of the mounting plate is fixedly connected with a motor 2 whose output shaft movably passes through the side wall of the mounting plate and is fixedly connected to the top of the auger.

[0026] By adopting the above technical solution, the set motor 2 can drive the auger to rotate.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. By rotating the installation sleeve on the surface of the drill body, when drilling, the water inlet hole 2 opened on the surface of the drill body is blocked by the sleeve, so as to avoid a large amount of soil entering the sampling chamber during drilling and interfering with the water quality monitoring data, thereby improving the accuracy of the monitoring numerical control. At the same time, the card block is connected to the water inlet hole 1 to avoid soil blocking the water inlet hole 1 during drilling, and to avoid the water inlet hole 1 being blocked when collecting groundwater, so that the groundwater cannot enter the sampling chamber.

[0029] 2. When it is necessary to sample groundwater, the drive motor three works, driving the electromagnet to rotate clockwise. When the electromagnet is energized, it generates magnetic attraction with the electromagnet, and then the sleeve rotates a certain angle clockwise on the surface of the drill body, so that the block slides out of the water inlet hole one, and rotates until a number of water inlet holes one correspond to a number of water inlet holes two. The groundwater enters the sampling cavity through the water inlet holes one and two. As the water level in the sampling cavity rises, the floating plate also moves up until the top of the floating plate abuts against the top of the sampling cavity, and then the switch is triggered. The switch controls the motor three to rotate counterclockwise at the same angle as above, and rotates until a number of blocks correspond to a number of water inlet holes one. Under the action of the spring, the blocks rebound and are connected to the water inlet holes one, thus completing the collection of groundwater. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of this application;

[0031] Figure 2 This is a schematic diagram of the lifting mechanism structure of this application;

[0032] Figure 3 This is a schematic diagram of the soil extraction component structure of this application;

[0033] Figure 4 This is an inverted schematic diagram of the water intake assembly structure of the present application;

[0034] Figure 5 It is a front view of the cross-sectional structure of the water intake component of the present application;

[0035] Figure 6 This is a schematic diagram of the structural decomposition of the water intake component of this application.

[0036] Reference numerals: 1, bottom plate; 2, supporting legs; 3, side plate; 4, top plate;

[0037] 5. Lifting mechanism; 51. Lead screw; 52. Rotating shaft 1; 53. Sliding groove 1; 54. Driving wheel; 55. Belt; 56. Driven wheel; 57. Motor 1; 58. Sliding block; 59. Cavity 3; 510. Rotating shaft 2;

[0038] 6. Mounting plate;

[0039] 7. Soil sampling assembly; 71. Auger; 72. Sampling tube; 73. Motor 2;

[0040] 8. Water collection assembly; 81. Drill body; 82. Water inlet hole 2; 83. Sampling chamber; 84. Connecting rope; 85. Floating plate; 86. Drain port; 87. Cover; 88. Switch; 89. Electromagnet; 810. Cavity 1; 811. Ring; 812. Sleeve; 813. Annular groove; 814. Water inlet hole 1; 815. Cavity 2; 816. Threaded groove; 817. Slideway 2; 818. Motor 3; 819. Spring; 820. Rotating rod; 821. Filter; 822. Block;

[0041] 9. Through hole three. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1-Figure 6 This application is described in further detail.

[0043] The embodiment of the present application discloses a sampling device for monitoring soil and groundwater pollution.

[0044] Reference Figure 1 , Figure 2 A sampling device for soil and groundwater pollution monitoring includes a top plate 4 fixedly mounted on the top of a bottom plate 1 through two side plates 3, the two side plates 3 are symmetrically fixedly mounted on the left and right sides of the top of the bottom plate 1, the top plate 4 is fixedly mounted on the top of the two side plates 3, and support legs 2 are fixedly mounted at the four corners of the bottom of the bottom plate 1. A lifting mechanism 5 is arranged in the two side plates 3 and the top plate 4, and the lifting mechanism 5 includes a driving wheel 54 and a driven wheel 56 respectively fixedly mounted on the top of two lead screws 51;

[0045] A slide groove 53 is provided at the center of the inner side of each of the two side plates 3, and a rotating shaft 52 is fixedly installed at the center of both ends of the lead screw 51. The two rotating shafts 52 are rotatably installed at the top and bottom centers of the inner cavity of the slide groove 53 respectively. A cavity 3 59 is provided inside the top plate 4, and a rotating shaft 2 510 is fixedly connected to the bottom center of the driving wheel 54 and the driven wheel 56. One end of the rotating shaft 2 510 away from the driving wheel 54 and the driven wheel 56 movably penetrates the side walls of the top plate 4 and the side plate 3 and is fixedly connected to the center of the top of the rotating shaft 1 52. The driving wheel 54 is connected to the driven wheel 56 through a belt 55. A motor 1 57 is fixedly installed at the top of the top plate 4 at a position corresponding to the driving wheel 54. The output shaft of the motor 1 57 movably penetrates the side walls of the top plate 4 and is fixedly connected to the center of the top of the driving wheel 54. Two sliders 58 are respectively threadedly connected to the surfaces of the two lead screws 51, and the two sliders 58 are symmetrically arranged. The left and right sides of the mounting plate 6 are respectively fixedly connected to the inner sides of the two sliders 58;

[0046] The soil sampling assembly 7 is fixedly mounted on the top and bottom of the mounting plate 6. The soil sampling assembly 7 includes an auger 71 movably mounted on the top of the inner cavity of the sampling barrel 72. The auger 71 is located in the middle of the inner cavity of the sampling barrel 72. The top of the auger 71 movably penetrates the side wall of the sampling barrel 72 and is flush with the top of the sampling barrel 72. A through hole 1 is penetrated on the right side of the top of the surface of the auger 71, and a through hole 2 is penetrated at a position corresponding to the through hole 1 on the surface of the sampling barrel 72. One end of the bolt passes through the through hole 2 and is threadedly connected to the through hole 1 with a nut, and the nut is screwed until it cannot be screwed. A through hole 3 9 larger than the diameter of the sampling barrel 72 is opened on the top of the base plate 1. The motor 2 73 is fixedly mounted on the top of the mounting plate 6 at a position corresponding to the auger 71. The output shaft of the motor 2 73 movably penetrates the side wall of the mounting plate 6 and is fixedly connected to the center of the top of the auger 71.

[0047] Start motor 1 57 and motor 2 73 through the control panel. Motor 1 57 drives the driving wheel 54 fixedly connected to its output shaft to rotate clockwise. The driving wheel 54 and the driven wheel 56 are driven by the belt 55, and then the driving wheel 54 and the driven wheel 56 rotate synchronously clockwise. The two lead screws 51 fixedly connected to the driving wheel 54 and the driven wheel 56 through the rotating shaft 2 510 rotate clockwise synchronously. The slider 58 threadedly connected to the two lead screws 51 slides down in the slide groove 1 53, and the mounting plate 6 fixedly connected between the two sliders 58 slides down. At the same time, motor 2 73 also drives the auger 71 to rotate. The auger 71 moves downward when rotating, and the soil rotates along the auger 71 into the sampling tube 72. The uppermost soil is located at the upper end of the sampling tube 72, and the soil of different soil layers is sequentially downward.

[0048] Reference Figure 4-Figure 6 The water intake assembly 8 is fixedly arranged at the center of the bottom end of the auger 71. The water intake assembly 8 includes a sleeve 812 rotatably mounted on the surface of the drill body 81. The drill body 81 is fixedly mounted at the center of the bottom end of the auger 71. The ring 811 is fixedly sleeved at the center of the surface of the drill body 81. An annular groove 813 matching the shape of the ring 811 is provided at the center of the inner surface of the sleeve 812. The sleeve 812 is rotatably mounted in the annular groove 813 through the ring 811 and rotatably sleeved on the surface of the drill body 81. A plurality of water inlet holes 82 are provided on the surface of the drill body 81. , a plurality of water inlet holes 814 are provided on the surface of the sleeve 812, the number of the water inlet holes 814 and the water inlet holes 82 is the same and they are arranged in a circular array, and the plurality of water inlet holes 814 correspond to the plurality of water inlet holes 82 one by one, and the inner surfaces of the plurality of water inlet holes 82 can be detachably installed with filter screens 821, and the filter screens 821 can be installed in the water inlet holes 82 in a snap-on installation manner, and the snap-on portion of the filter screen 821 is aligned with the snap-on groove on the inner surface of the water inlet holes 82, and then pressed hard to make the snap-on and the snap-on groove tightly combined;

[0049] The number of the second chutes 817 is the same as the number of the second water inlet holes 82 and are arranged in a circular array. The second chutes 817 are opened at the same height as the second water inlet holes 82 on the surface of the drill body 81. The block 822 with a trapezoidal shape is slidably installed in the second chutes 817. A spring 819 is fixedly connected to the center of the square side of the trapezoidal block 822. One end of the spring 819 away from the block 822 is fixedly connected to the center of the side of the inner cavity of the second chutes 817 away from the block 822. The sampling cavity 83 connected with the second water inlet holes 82 is opened in the center of the drill body 81. A connecting rope 84 is fixedly connected to the center of the top of the inner cavity of the sampling cavity 83. The bottom end of the connecting rope 84 is fixedly connected to a floating plate 85. The floating plate 85 is adapted to the shape of the sampling cavity 83. An installation cavity is opened at the top of the inner cavity of the sampling cavity 83. A switch 88 whose bottom is flush with the top of the inner cavity of the sampling cavity 83 is fixedly installed at the top of the inner cavity of the installation cavity.

[0050] A cavity 1 810 is provided inside the drill body 81, and an electromagnet 89 is located at the bottom of the inner cavity of the cavity 1 810. A rotating rod 820 is fixedly installed at the center of the top of the electromagnet 89. The rotating rod 820 is rotatably installed at the center of the top of the inner cavity of the cavity 1 810. A cavity 2 815 is provided at the center of the bottom of the inner cavity of the auger 71. A motor 3 818 is fixedly installed at the top of the inner cavity of the cavity 2 815. The output shaft of the motor 3 818 movably passes through the side walls of the auger 71 and the drill body 81 and is fixedly connected to the center of the top of the rotating rod 820.

[0051] A drain port 86 connected to the sampling chamber 83 is provided at the center of the bottom of the drill body 81. A threaded groove 816 connected to the drain port 86 is provided at the outer circle of the drain port 86 at the bottom of the drill body 81. A thread matching the shape of the threaded groove 816 is provided on one side of the surface of the cover 87. The cover 87 is connected to the threaded groove 816 through the provided thread.

[0052] When the auger 71 is drilling a hole in the ground, the motor three 818 is started through the control panel, and the motor three 818 drives the electromagnet 89 fixedly connected to its output shaft to rotate clockwise. When the electromagnet 89 is energized, it realizes magnetic attraction with the sleeve 812, and then the electromagnet 89 drives the sleeve 812 to rotate clockwise. When the sleeve 812 rotates to the point where the plurality of water inlet holes 1 814 correspond to the plurality of clamping blocks 822, the clamping blocks 822 rebound under the action of the spring 819 and are clamped in the water inlet holes 1 814, and the plurality of water inlet holes 2 82 do not correspond to the plurality of water inlet holes 1 814, and then the water inlet holes 2 82 are blocked by the sleeve 812. When drilling a hole, the soil generated during drilling cannot enter the sampling chamber 83 through the water inlet holes 2 82, thereby avoiding interference with the water quality monitoring data and improving the accuracy of the monitoring data.

[0053] At the same time, the water inlet hole 814 is blocked by the block 822 to prevent a large amount of mud generated during drilling from being left in the water inlet hole 814, and the water inlet hole 814 is blocked to prevent the groundwater from entering the sampling chamber 83 during subsequent groundwater collection;

[0054] When the specified depth is reached and it is necessary to collect groundwater at that depth for monitoring, the motor 3 818 is started again through the control panel. The motor 3 818 drives the electromagnet 89 to rotate counterclockwise at the same angle as above. Similarly, the sleeve 812 rotates counterclockwise at the same angle. When rotating, the inclined surface of the block 822 connected to the water inlet hole 1 814 is subjected to force. Through the decomposition of the force, it can be known that the block 822 is subjected to a force in the direction of the chute 2 817. Under the action of the force, the block 822 slides out of the water inlet hole 1 814 and slides into the chute 2 817. When the rotation is completed, a number of water inlet holes 1 814 correspond to a number of water inlet holes 2 82, and the groundwater enters the sampling chamber 83 from the number of water inlet holes 1 814 and the water inlet holes 2 82.

[0055] As the water level in the sampling chamber 83 rises, the floating plate 85 floating on the water surface moves up. When the water level rises to the point where the top of the floating plate 85 abuts against the top of the inner cavity of the sampling chamber 83, the floating plate 85 will touch the switch 88. The switch 88 controls the motor three 818, and the motor three 818 then rotates clockwise at the same angle as above. According to the same principle, the water inlet hole two 82 is blocked by the sleeve 812, and the water inlet hole one 814 is blocked by the block 822, thus completing the collection of groundwater. When the groundwater needs to be discharged for monitoring, the cover 87 is unscrewed and the collected groundwater is discharged from the drain outlet 86.

[0056] Motor 1 57, Motor 2 73, Electromagnet 89, Motor 3 818 are all prior art, and their structural principles will not be described in detail. Meanwhile, the device is also provided with a single chip microcomputer, a microprocessor, a control system and other structures, which will not be described in detail because they are not the main technologies. Motor 3 818 is preferably a servo motor.

[0057] The implementation principle of a sampling device for soil and groundwater pollution monitoring in the embodiment of the present application is as follows: before drilling, the motor three 818 is started through the control panel, and the motor three 818 works, driving the electromagnet 89 fixedly connected to its output shaft to rotate clockwise, and the electromagnet 89 realizes magnetic attraction with the sleeve 812 when it is energized, and then the electromagnet 89 drives the sleeve 812 to rotate clockwise, and when the sleeve 812 rotates to the point where a plurality of water inlet holes 1 814 correspond to a plurality of clamping blocks 822, the clamping blocks 822 rebound under the action of the spring 819 and are clamped in the water inlet holes 1 814, and a plurality of water inlet holes 2 82 do not correspond to a plurality of water inlet holes 1 814, and then the water inlet holes 2 82 are blocked by the sleeve 812, and at the same time, the water inlet holes 1 814 are blocked by the clamping blocks 822;

[0058] Then, the motor 1 57 and the motor 2 73 are started through the control panel, the driving wheel 54 and the driven wheel 56 rotate synchronously clockwise, and the two indirect screws 51 rotate synchronously clockwise, and the slider 58 threadedly connected to the two screws 51 slides down in the slide groove 1 53, and the mounting plate 6 fixedly connected between the two sliders 58 slides down. At the same time, the motor 2 73 also drives the auger 71 to rotate, and the auger 71 moves downward when rotating, and the soil rotates along the auger 71 into the sampling tube 72. The uppermost soil is located at the upper end of the sampling tube 72, and the soil of different soil layers is sequentially downward;

[0059] When the specified depth is reached and it is necessary to collect groundwater at that depth for monitoring, the motor 3 818 is started again through the control panel. The motor 3 818 drives the electromagnet 89 to rotate counterclockwise by the same angle as above. Similarly, the sleeve 812 rotates counterclockwise by the same angle. Under the action of force, the block 822 slides out of the water inlet hole 1 814 and slides into the chute 2 817. When the rotation is completed, the water inlet holes 1 814 correspond to the water inlet holes 2 82, and the groundwater enters the sampling chamber 83 from the water inlet holes 1 814 and the water inlet holes 2 82. The water level in the sample chamber 83 rises, and the floating plate 85 floating on the water surface moves up accordingly. When the water level rises to the point where the top of the floating plate 85 abuts against the top of the inner cavity of the sampling chamber 83, the floating plate 85 will touch the switch 88. The switch 88 controls the motor three 818, and then the motor three 818 rotates clockwise at the same angle as above. According to the same principle, the water inlet hole two 82 is blocked by the sleeve 812, and the water inlet hole one 814 is blocked by the block 822, thus completing the collection of groundwater. When the groundwater needs to be discharged for monitoring, the cover 87 is unscrewed, and the collected groundwater is discharged from the drain outlet 86.

[0060] The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A sampling device for monitoring soil and groundwater pollution, comprising a top plate (4) fixedly mounted on the top of a bottom plate (1) via two side plates (3), characterized in that: It also includes a mounting plate (6) which is arranged between the two side plates (3) through a lifting mechanism (5) and can slide longitudinally, the lifting mechanism (5) including a driving wheel (54) and a driven wheel (56) which are respectively fixedly mounted on the top of two lead screws (51) and driven by a belt (55), and a soil sampling assembly (7) is provided on the top and bottom of the mounting plate (6), and the soil sampling assembly (7) includes an auger (71) which is movably mounted on the top of the inner cavity of the sampling tube (72); A water intake assembly (8) is fixedly provided at the bottom of the auger (71), and the water intake assembly (8) comprises a sleeve (812) rotatably mounted on the surface of the drill body (81), and the drill body (81) is fixedly mounted at the center of the bottom end of the auger (71), and the sleeve (812) and the surface of the drill body (81) are respectively provided with a plurality of mutually corresponding water inlet holes 1 (814) and water inlet holes 2 (82), and a plurality of the water inlet holes 2 (82) are all connected to the sampling chamber (83), and a plurality of slide grooves 2 (817) are provided on the surface of the drill body (81), and a clamping block (822) is slidably mounted in a plurality of the slide grooves 2 (817), and the shapes of the water inlet holes 1 (814) and the clamping block (822) are adapted to each other; A floating plate (85) for triggering a switch (88) is fixedly connected to the top of the inner cavity of a sampling cavity (83) opened in the center of the drill body (81) via a connecting rope (84); an electromagnet (89) is rotatably mounted on the top of the inner cavity of a cavity 1 (810) opened in the drill body (81); the electromagnet (89) realizes magnetic attraction with the sleeve (812) when power is supplied; The drill body (81) is fixedly mounted on the bottom of the auger (71); a circular ring (811) is fixedly connected to the surface of the drill body (81); an annular groove (813) matching the shape of the circular ring (811) is formed on the inner wall of the sleeve (812); the circular ring (811) is located in the annular groove (813) and is rotatable; the inner wall of the sleeve (812) is in contact with the surface of the drill body (81); and filter screens (821) are detachably mounted on the outer sides of the inner cavities of the plurality of water inlet holes (82).

2. A sampling device for soil and groundwater pollution monitoring according to claim 1, characterized in that: A spring (819) is fixedly connected to the inner side of the clamping block (822), the inner end of which is fixedly connected to the inner side of the inner cavity of the second slide groove (817).

3. A sampling device for soil and groundwater pollution monitoring according to claim 1, characterized in that: The switch (88) is embedded in the top of the inner cavity of the sampling cavity (83), and the bottom of the switch (88) is flush with the top of the sampling cavity (83).

4. A sampling device for soil and groundwater pollution monitoring according to claim 1, characterized in that: A second cavity (815) is provided at the bottom of the inner cavity of the auger (71), and a third motor (818) is fixedly installed at the bottom of the inner cavity of the second cavity (815), the output shaft of which movably passes through the side walls of the auger (71) and the drill body (81) and is fixedly connected to the top center of the electromagnet (89).

5. A sampling device for soil and groundwater pollution monitoring according to claim 4, characterized in that: A thread groove (816) is provided at the center of the bottom of the drill body (81), a drainage port (86) communicating with the sampling chamber (83) is provided at the top of the thread groove (816), and a cover (87) is connected to the inner thread of the thread groove (816).

6. A sampling device for soil and groundwater pollution monitoring according to claim 5, characterized in that: A slide groove (53) is provided on the inner side of the two side plates (3), and the two lead screws (51) are rotatably mounted between the top and bottom of the inner cavity of the two slide grooves (53). The surfaces of the two lead screws (51) are threadedly connected with sliders (58), and the two sliders (58) are respectively located in the two slide grooves (53) and can slide longitudinally. The mounting plate (6) is fixedly connected between the two sliders (58), and the top of the top plate (4) is fixedly connected to a motor (57) whose output shaft movably passes through the side wall of the top plate (4) and is fixedly connected to the top center of the driving wheel (54).

7. A sampling device for soil and groundwater pollution monitoring according to claim 6, characterized in that: A second motor (73) is fixedly connected to the top of the mounting plate (6) and has an output shaft that movably penetrates the side wall of the mounting plate (6) and is fixedly connected to the top of the auger (71).

Images