A portable soil pollutant monitoring device capable of collecting pollutants at different depths

Abstract

The present invention relates to the field of soil collection, and specifically relates to a portable soil pollutant monitoring device capable of collecting soil at different depths. It includes a base and a turntable. The turntable is rotatably arranged at the center of the top of the base. It also includes a drilling mechanism and a sampling mechanism arranged on the turntable. There are two first through holes on the turntable. The drilling mechanism includes a rotating pipe that can move along the axis direction of the turntable. The rotating pipe is slidably arranged in the corresponding first through hole. A threaded rod is rotatably arranged at the center of the rotating pipe. The sampling mechanism includes a sampling cylinder that can move along the axis direction of the turntable. The sampling cylinder is slidably arranged in the corresponding first through hole. A plurality of material extraction holes are equidistantly arranged along the axis direction of the sampling cylinder. A sampling pipe for extracting soil is slidably arranged in the material extraction hole. There is a second through hole on the base. Through the cooperation of the sampling pipe and the sampling cylinder, independent sampling of soil at different depths can be carried out. Through the cooperation of the turntable and the rotating pipe, the damaged ground can be restored.

Description

Technical Field

[0001] The present invention relates to the field of soil collection, and more particularly to a portable soil pollutant monitoring device capable of collecting soil at different depths. Background Art

[0002] Soil collection refers to the process of taking a representative part of the soil from the field, the field, the culture or the cultivation unit; the soil sample obtained by sampling is properly processed to prepare an analytical sample, and finally the test sample taken for analysis and determination is only a few grams or even a fraction of a gram, and the analysis result should represent all the soil. Therefore, it is necessary to correctly collect the soil at different depths. Otherwise, even if the analysis process is accurate, it is useless, and even leads to wrong conclusions, bringing unnecessary losses to production or scientific research.

[0003] Chinese Patent Application CN214667801U discloses a portable soil collection device, which includes a soil sampling drill main body, and also includes a soil sampling drill tool and a drill working frame. The impact block of the soil sampling drill tool is located in the impact head of the soil sampling drill main body. The drill working frame includes a first support part and a main body placement part slidably connected longitudinally in the first support part, and the soil sampling drill main body is arranged on the main body placement part.

[0004] In this application, when sampling soil at different depths, the soil in the upper layer will contaminate the soil in the lower layer, resulting in insufficient purity of the obtained soil, which will affect the test results, and during the drilling process, the ground is damaged. Summary of the Invention

[0005] In view of the problems existing in the prior art, a portable soil pollutant monitoring device capable of collecting soil at different depths is provided. Through the cooperation between the sampling cylinder and the sampling pipe, separate sampling of soil at different depths is realized, and through the cooperation of the turntable, the rotating pipe and the threaded rod, the ground is repaired, thereby avoiding damage to the ground.

[0006] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows:

[0007] A portable soil pollutant monitoring device capable of collecting soil at different depths includes a base and a turntable. The turntable is rotatably arranged at the center of the top of the base, and further includes a drilling mechanism and a sampling mechanism arranged on the turntable;

[0008] Two first through holes symmetrically distributed along its axis are arranged at the top edge of the turntable. The drilling mechanism and the sampling mechanism are respectively located above the corresponding first through holes;

[0009] The drilling mechanism includes a rotating pipe that can move along the axis direction of the turntable. The rotating pipe is slidably arranged in the corresponding first through hole. A threaded rod is rotatably arranged at the center of the rotating pipe. The bottom of the threaded rod is conical and extends out of the rotating pipe;

[0010] The sampling mechanism includes a sampling cylinder that can move along the axis of the turntable, and the sampling cylinder is slidably arranged in the corresponding first through-hole;

[0011] The sampling barrel is provided with a plurality of sampling holes equidistantly along the axis direction. The sampling holes are arranged along the circumference direction of the sampling barrel and the sampling holes in the same horizontal plane are symmetrical with respect to the axis center of the sampling barrel. A sampling tube for extracting soil is slidably provided in the sampling hole.

[0012] The rotating tube has the same diameter as the sampling tube, a second through hole is provided on the base, the first through hole and the second through hole have the same diameter, and the distance from the first through hole to the center of the rotating disk is the same as the distance from the second through hole to the center of the base.

[0013] Preferably, the sampling tube includes a material storage barrel and a material taking head;

[0014] The material taking head is cylindrical in shape, the inner diameter of the material taking head is the same as the inner diameter of the material storage barrel, the outer diameter of the material taking head is the same as the outer diameter of the material storage barrel, one end of the material taking head is fixedly connected to one end of the opening of the material storage barrel, and the material storage barrel is slidably arranged in the corresponding material taking hole;

[0015] A sealing assembly for cutting off soil blocks is also provided in the feeding head. The sealing assembly includes two arc-shaped sealing plates that can move toward and contact each other along the diameter direction of the feeding head. The facing ends of the arc-shaped sealing plates are triangular in shape. Two mounting grooves for placing the arc-shaped sealing plates are provided at one end of the feeding head close to the storage barrel. The two mounting grooves are mirrored relative to the axis of the feeding head. Each mounting groove is also provided with a first rectangular notch for avoiding the arc-shaped sealing plate. The first rectangular notch is connected to the inside of the feeding head.

[0016] Preferably, the blocking assembly further includes a support column, a connecting column, a spring, a limit cover, a contact plate, a first gear, a slide bar, a second gear, a first bearing, a first screw rod and a connecting rod;

[0017] There are two support columns, one end of which is fixed on the inner wall of the bottom of the storage barrel, and the two support columns are symmetrically arranged relative to the center of the sampling tube;

[0018] A first circular hole is provided at the center of one end of each support column away from the inner wall of the bottom of the storage barrel, and two first sliding grooves are provided on the inner wall of the first circular hole, and the two first sliding grooves are mirror-imaged and arranged corresponding to the center of the first circular hole;

[0019] There are two connecting columns. The two connecting columns are slidably arranged in the corresponding first round holes. On the outer wall of one end of each connecting column, first sliders corresponding to the first sliding grooves are symmetrically arranged. The first sliders are slidably arranged in the corresponding first sliding grooves. On the outer wall of the connecting column, a plurality of first round teeth are arranged along the length direction. In the first round holes of the corresponding support columns, second rectangular notches for the movement of the first round teeth are arranged. The first round teeth of the two connecting columns are away from each other;

[0020] There are two springs. The springs are placed in the corresponding first round holes. The two ends of each spring respectively abut against the corresponding connecting column and the inner wall of the bottom of the first round hole;

[0021] There are two limit caps. The two limit caps are respectively arranged at one end of the corresponding support column away from the connecting column. At the center of each limit cap, a movement hole for the movement of the first round teeth and the connecting column is arranged;

[0022] The diameter of the abutting disc is the same as the inner diameter of the material storage barrel. The abutting disc is fixedly connected to one end of the connecting column away from the support column;

[0023] At one end of the inner wall of the material storage barrel close to the support column, two third rectangular notches are arranged. The two third rectangular notches are symmetrically arranged with respect to the axis direction of the material storage barrel and the two third rectangular notches are close to the corresponding first round teeth. There are two first gears. The two first gears are respectively rotatably arranged in the third rectangular notches of the material storage barrel. The first gears are respectively meshed with the first round teeth of the corresponding connecting column;

[0024] At one end of the material storage barrel close to the material taking head, two second sliding grooves are symmetrically arranged. There are two sliding bars. The sliding bars are slidably arranged in the corresponding second sliding grooves. Along the length direction of the sliding bars, a plurality of second round teeth are arranged. The second round teeth are respectively meshed with the corresponding first gears. On one side of the sliding bar away from the second round teeth, third round teeth are arranged along the length direction. On the second sliding groove, a first rectangular cut for the sliding of the third round teeth is arranged;

[0025] At one end of the material taking head close to the material storage barrel, a third sliding groove corresponding to the shape of the second sliding groove is arranged. The second sliding groove and the third sliding groove are communicated with each other;

[0026] In each installation groove, two second gears are arranged. The two second gears are rotatably arranged on one side of the installation groove close to the third round teeth and the two second gears are arranged on both sides of the corresponding sliding bar along the length direction. The two second gears are respectively meshed with the third round teeth of the corresponding sliding bar;

[0027] On one side of each installation groove away from the second gear, two first bearings are arranged. The first bearings are coaxially arranged with the corresponding second gears;

[0028] There are multiple first screw rods, one end of each first screw rod is fixedly connected to the center of the corresponding second gear, and one end of each first screw rod away from the second gear is fixedly arranged in the corresponding first bearing, and the threads of the first screw rods located in the same mounting groove have opposite directions;

[0029] A second slider is provided on each first screw rod, and the second slider is threadedly connected to the first screw rod. One end of each second slider away from the storage barrel is fixedly connected to the corresponding arc-shaped sealing plate through a connecting rod.

[0030] Preferably, the outer wall of the storage barrel is provided with a strip-shaped notch, the strip-shaped notch extends along the length direction of the storage barrel and passes through the storage barrel, and a fourth sliding groove is provided on the inner wall of one side of the strip-shaped notch along the length direction;

[0031] A pushing plate is also provided at the end of the friction plate away from the support column. The pushing plate has the same diameter as the friction plate. The outer walls on both sides of the pushing plate close to the strip-shaped notch are provided with protruding rods corresponding to the width of the strip-shaped notch. Each protruding rod is provided with a third slider corresponding to the fourth slide groove, and the third slider of the protruding rod can be slidably set in the corresponding fourth slide groove.

[0032] Preferably, a rotating rod is provided at one end of each extending rod away from the pushing plate, and the rotating rod has the same shape as the strip-shaped gap. One end of the rotating rod is hinged to the end of the extending rod away from the pushing plate. A first magnet is provided at the center of the end of the rotating rod away from the extending rod, and a second magnet is provided at the center of the end of the strip-shaped gap away from the pushing plate. The first magnet and the second magnet are magnetically attracted to each other.

[0033] Preferably, each rotating rod is provided with a triangular groove, and the triangular groove is provided on a side of the rotating rod away from the center of the material storage barrel.

[0034] Preferably, a pushing component for pushing the sampling tube to move is further provided in the sampling cylinder;

[0035] The pushing assembly includes a blocking cover, a rotating rod and a knob;

[0036] The blocking cover is arranged on the top of the sampling tube, and a third through-hole is arranged at the center of the blocking cover;

[0037] The rotating rod is rotatably disposed at the center of the sampling barrel and is coaxially disposed with the sampling barrel, and one end of the rotating rod away from the inner wall of the bottom of the sampling barrel is rotatably disposed in the third through hole;

[0038] The rotating rod is provided with a plurality of third gears along the length direction, the center of the third gear is in the same horizontal plane as the center of the material taking hole, and a plurality of tooth grooves are provided on the outer wall of one side of the storage barrel along the length direction, the tooth grooves facing the center of the sampling tube, and the third gears are respectively engaged with the tooth grooves of the storage barrel slidably arranged in the material taking hole;

[0039] The knob is rotatably arranged at the center of the top of the sealing cover, and the knob is fixedly connected to one end of the rotating rod away from the inner wall of the bottom of the sampling cylinder.

[0040] Preferably, a limiting block is arranged on the outer wall of one end of the storage cylinder away from the material taking head, and a plurality of guide plates are also arranged in the sampling cylinder. Arc-shaped guiding ends for placing the storage barrel are arranged at both ends of the top of the guide plate. The storage barrel is slidably arranged in the corresponding arc-shaped guiding ends, and a fourth rectangular notch for avoiding the limiting block is arranged on each arc-shaped guiding end.

[0041] Preferably, two driving mechanisms for driving the sampling cylinder and the rotating pipe to move are also arranged on the turntable;

[0042] Each driving mechanism includes a slide rail, a fourth slider, a second lead screw, a first rotary driver and a fixing ring;

[0043] The slide rail is arranged vertically on the turntable;

[0044] The fourth slider is slidably arranged on the slide rail, and a threaded hole is arranged in the fourth slider along the length direction of the slide rail;

[0045] Both ends of the second lead screw are rotatably arranged at both ends of the slide rail respectively, and the second lead screw is threadedly connected to the fourth slider;

[0046] The first rotary driver is arranged vertically at one end of the slide rail away from the turntable, and the output shaft of the first rotary driver passes through the slide rail and is fixedly connected to one end of the second lead screw away from the turntable;

[0047] A rectangular protruding end extending outwards is arranged on the outer periphery of the fixing ring. The rectangular protruding end is fixedly connected to one end of the fourth slider perpendicular to the length direction of the slide rail, and a fourth through hole for placing the sampling cylinder and the rotating pipe is arranged at the center of the fixing ring.

[0048] Preferably, the drilling mechanism further includes a soil storage tank and a second rotary driver;

[0049] A funnel-shaped discharge port is arranged at the bottom of the soil storage tank, and the top of the rotating pipe is fixedly arranged in the discharge port at the bottom of the soil storage tank;

[0050] The second rotary driver is arranged at the center of the top of the soil storage tank, and one end of the spiral rod away from the turntable extends into the interior of the soil storage tank through the discharge port and is fixedly connected to the output shaft of the second rotary driver.

[0051] The beneficial effects of the present application compared with the prior art are:

[0052] 1. In this application, a turntable and a rotating pipe that can move along the axis of the turntable are used. A threaded rod is rotatably arranged at the center of the rotating pipe. The bottom of the threaded rod is conical and extends out of the rotating pipe. Holes are drilled through the threaded rod, and the excavated soil blocks are collected and stored for subsequent backfilling. Through a sampling cylinder that can move along the axis of the turntable, a plurality of material extraction holes are equidistantly arranged along the axis of the sampling cylinder. The material extraction holes are arranged along the circumferential direction of the sampling cylinder, and the material extraction holes on the same horizontal plane are centrosymmetric with respect to the axis center of the sampling cylinder. Sampling pipes for extracting soil are slidably arranged in the material extraction holes. Sampling pipes for extracting soil are slidably arranged in all the material extraction holes. By arranging sampling pipes at different heights of the sampling cylinder, the sampling cylinder extends into the holes excavated by the rotating pipe to sample different depths. And the sampling pipes do not affect each other, which can ensure the purity of the soil and avoid the mixing of soils at different depths, thus making the test results different.

[0053] 2. In this application, through a mud block extrusion contact disk, the contact disk drives the connecting column to move. The first gear teeth of the two connecting columns are respectively engaged with the corresponding first gears. The connecting column drives the corresponding first gear to move. The first gear is respectively engaged with the second gear teeth of the corresponding slide bar. The first gear drives the corresponding slide bar to move. The third gear teeth of the slide bar are respectively engaged with the two second gears to drive the second gears to rotate. The rotation of the second gears drives the second sliders to move along the length direction of the first lead screw, so as to move the two arc-shaped sealing plates closer to each other to block and cut the mud blocks entering the storage bucket. The material extraction head is

[0054] 3. In this application, through the cooperation of a rotating rod and a knob, the sampling pipes can be simultaneously extended from the material extraction cylinder to achieve sampling at different positions. And after sampling is completed, by rotating the knob, the sampling pipes can be recovered, which is convenient for pulling out the sampling cylinder from the ground.

[0055] 4. By arranging a strip-shaped notch on the outer wall of the storage bucket, a pushing disk is also arranged at one end of the contact disk away from the support column. On both outer walls of the pushing disk close to the strip-shaped notch, extending rods corresponding to the width of the strip-shaped notch are arranged. A rotating rod is arranged at one end of each extending rod away from the pushing disk. The rotating rod has the same shape as the strip-shaped notch. One end of the rotating rod is hinged to one end of the extending rod away from the pushing disk. Through the arrangement of the rotating rod, it is convenient for the staff to push the pushing disk to take out the excavated soil from the storage bucket. Through the mutual attraction of the first magnet and the second magnet, the strip-shaped notch is blocked to prevent the soil from moving out of the strip-shaped notch. A triangular groove is arranged on each rotating rod to facilitate the staff to lift the rotating rod. Description of the Drawings

[0056] Figure 1 is a three-dimensional view of this application;

[0057] Figure 2It is a front view of the present application;

[0058] Figure 3 This application Figure 2 Plane cross-sectional view along AA direction;

[0059] Figure 4 is a bottom view of the present application;

[0060] Figure 5 It is a three-dimensional diagram of the sampling tube of the present application;

[0061] Figure 6 It is a three-dimensional exploded view of the sampling tube of the present application;

[0062] Figure 7 It is the front view of this application;

[0063] Figure 8 This application Figure 7 Plane cross-sectional view along direction BB;

[0064] Figure 9 It is a three-dimensional diagram of the storage barrel of the present application;

[0065] Figure 10 It is a three-dimensional diagram of the plugging assembly and the pusher tray of the present application;

[0066] Figure 11 This is a three-dimensional diagram of the support column, connecting column, spring, limit cover and contact plate of the present application;

[0067] Figure 12 It is a three-dimensional diagram of the push assembly and sampling tube of the present application;

[0068] Figure 13 It is a three-dimensional diagram of the driving mechanism of the present application;

[0069] The numbers in the figure are:

[0070] 1-base; 1a-second through-hole;

[0071] 2-turntable; 2a-first perforation;

[0072] 3-drilling mechanism; 3a-rotating tube; 3b-threaded rod; 3c-soil storage tank; 3c1-discharge port; 3d-second rotary drive;

[0073] 4-sampling mechanism; 4a-sampling tube; 4a1-material taking hole; 4a2-guide plate; 4a3-arc-shaped guide end; 4a4-fourth rectangular notch;

[0074] 5 - Sampling tube; 5a - Stock bucket; 5a1 - Third rectangular notch; 5a2 - Second chute; 5a21 - First rectangular cutout; 5a3 - Strip notch; 5a31 - Second magnet; 5a4 - Fourth chute; 5a5 - Tooth groove; 5a6 - Limit block; 5b - Sampling head; 5b1 - Mounting groove; 5b2 - First rectangular notch; 5b3 - Third chute;

[0075] 6 - Sealing assembly; 6a - Arc-shaped sealing plate; 6b - Support column; 6b1 - First round hole; 6b2 - First chute; 6b3 - Second rectangular notch; 6c - Connecting column; 6c1 - First slider; 6c2 - First round of teeth; 6d - Spring; 6e - Limit cover; 6e1 - Moving hole; 6f - Contact plate; 6g - First gear; 6h - Slide bar; 6h1 - Second round of teeth; 6h2 - Third round of teeth; 6i - Second gear; 6j - First bearing; 6k - First lead screw; 6k1 - Second slider; 6l - Connecting rod;

[0076] 7 - Pushing plate; 7a - Extension rod; 7b - Third slider; 7c - Rotating rod; 7d - First magnet; 7e - Triangular groove;

[0077] 8 - Pushing component; 8a - Sealing cover; 8a1 - Third perforation; 8b - Rotating rod; 8b1 - Third gear; 8c - Knob;

[0078] 9 - Driving mechanism; 9a - Slide rail; 9b - Fourth slider; 9b1 - Threaded hole; 9c - Second lead screw; 9d - First rotary driver; 9e - Fixed ring; 9e1 - Rectangular extension end; 9e2 - Fourth perforation. Detailed implementation mode

[0079] To further understand the features, technical means, and specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation modes.

[0080] See Figures 1 to 13 As shown, a portable soil pollutant monitoring device for collecting at different depths includes a base 1 and a turntable 2. The turntable 2 is rotatably arranged at the center of the top of the base 1, and further includes a drilling mechanism 3 and a sampling mechanism 4 arranged on the turntable 2;

[0081] Two first perforations 2a symmetrically distributed along its axis are provided at the top edge of the turntable 2. The drilling mechanism and the sampling mechanism 4 are respectively located above the corresponding first perforations 2a;

[0082] The drilling mechanism includes a rotating tube 3a that can move along the axis direction of the turntable 2. The rotating tube 3a is slidably arranged in the corresponding first perforation 2a. A threaded rod 3b is rotatably arranged at the center of the rotating tube 3a. The bottom of the threaded rod 3b is conical and extends out of the rotating tube 3a;

[0083] The sampling mechanism 4 includes a sampling cylinder 4a that can move along the axis of the turntable 2. The sampling cylinder 4a is slidably arranged in the corresponding first through-hole 2a.

[0084] The sampling barrel 4a is provided with a plurality of sampling holes 4a1 equidistantly along the axial direction. The sampling holes 4a1 are arranged along the circumference of the sampling barrel 4a and the sampling holes 4a1 on the same horizontal plane are symmetrical with respect to the axis of the sampling barrel 4a. A sampling tube 5 for extracting soil is slidably provided in the sampling hole 4a1.

[0085] The rotating tube 3a has the same diameter as the sampling tube 4a. A second through-hole 1a is provided on the base 1. The first through-hole 2a has the same diameter as the second through-hole 1a. The distance from the first through-hole 2a to the center of the rotating disk 2 is the same as the distance from the second through-hole 1a to the center of the base 1.

[0086] The staff base 1 is placed on the land to be sampled, and the position of the turntable 2 is adjusted so that the first through-hole 2a corresponding to the rotating tube 3a corresponds to the second through-hole 1a of the base 1, and then the rotating tube 3a is adjusted to move toward the second through-hole 1a. When the rotating tube 3a contacts the ground, the spiral rod rotates, thereby transporting the soil block upward. The bottom of the threaded rod 3b is conical in shape, which is convenient for drilling. After the hole is drilled in the ground, the rotating tube 3a is adjusted to move away from the ground, and then the turntable 2 is adjusted so that the first through-hole 2a corresponding to the sampling barrel 4a corresponds to the second through-hole 1a of the base 1, and then the sampling barrel 4a is adjusted to move toward the ground. When the sampling barrel 4a penetrates into the drilled hole, the sampling barrel 4a is equidistantly provided with a plurality of sampling holes 4a1 along the axial direction, and the sampling holes 4a1 are arranged along the circumferential direction of the sampling barrel 4a and The sampling holes 4a1 on the same horizontal plane are symmetrical with respect to the axis center of the sampling tube 4a, and a sampling tube 5 for extracting soil is slidingly provided in the sampling hole 4a1; the sampling tube 5 is adjusted, and the sampling tube 5 moves in a direction away from the sampling tube 4a and is inserted into the soil on the inner wall of the hole, so that the soil at different depths is taken out, and the soil between different heights does not interfere with each other, and the soil at each height is sampled twice, which ensures the weight of the sampling and avoids the problems of too few samples and easy mixing between samples. After taking out the soil, the sampling tube 5 retracts into the sampling tube 4a, and then the staff adjusts the sampling tube 4a to move away from the ground. When the sampling tube 4a moves out of the hole, the turntable 2 is adjusted to move the rotating tube 3a to the top of the hole, and then the threaded rod 3b rotates in the opposite direction to send the excavated soil back into the hole to avoid damage to the ground.

[0087] See also Figures 5 to 10 As shown, the sampling tube 5 includes a material storage barrel 5a and a material taking head 5b;

[0088] The material taking head 5b is cylindrical in shape, and the inner diameter of the material taking head 5b is the same as the inner diameter of the material storage barrel 5a, and the outer diameter of the material taking head 5b is the same as the outer diameter of the material storage barrel 5a. One end of the material taking head 5b is fixedly connected to the open end of the material storage barrel 5a, and the material storage barrel 5a is slidably arranged in the corresponding material taking hole 4a1;

[0089] A sealing component 6 for cutting off soil blocks is also provided in the feeding head 5b. The sealing component 6 includes two arc-shaped sealing plates 6a that can move toward and contact each other along the diameter direction of the feeding head 5b. The facing ends of the arc-shaped sealing plates 6a are triangular in shape. Two mounting grooves 5b1 for placing the arc-shaped sealing plates 6a are provided at one end of the feeding head 5b close to the storage barrel 5a. The two mounting grooves 5b1 are mirror-imaged relative to the axis of the feeding head 5b. Each mounting groove 5b1 is also provided with a first rectangular notch 5b2 for avoiding the arc-shaped sealing plate 6a. The first rectangular notch 5b2 is connected to the interior of the feeding head 5b.

[0090] When the feeding head 5b is inserted into the soil block, the soil enters the storage barrel 5a. When the soil in the storage barrel 5a reaches a certain amount, a sealing component 6 for cutting off the soil block is also provided in the feeding head 5b. The sealing component 6 includes two arc-shaped sealing plates 6a that can move toward and contact each other along the diameter direction of the feeding head 5b. The soil block is cut and sealed by the two arc-shaped sealing plates 6a, so that the soil block can be taken out more completely. It should be noted that the opposite ends in this article are the ends close to each other.

[0091] See also Figures 8 to 11 As shown, the blocking assembly 6 further includes a support column 6b, a connecting column 6c, a spring 6d, a limit cover 6e, an abutment plate 6f, a first gear 6g, a slide bar 6h, a second gear 6i, a first bearing 6j, a first screw rod 6k and a connecting rod 6l;

[0092] There are two support columns 6b, one end of which is fixedly mounted on the bottom inner wall of the storage barrel 5a, and the two support columns 6b are symmetrically arranged relative to the center of the sampling tube 4a;

[0093] A first circular hole 6b1 is provided at the center of one end of each support column 6b away from the inner wall of the bottom of the storage barrel 5a. Two first chutes 6b2 are provided on the inner wall of the first circular hole 6b1. The two first chutes 6b2 are mirror-imaged and arranged corresponding to the center of the first circular hole 6b1.

[0094] There are two connecting columns 6c. The two connecting columns 6c are slidably arranged in the corresponding first round holes 6b1. On the outer wall at one end of the connecting column 6c, first sliding blocks 6c1 corresponding to the first sliding grooves 6b2 are symmetrically arranged. The first sliding blocks 6c1 are slidably arranged in the corresponding first sliding grooves 6b2. A plurality of first round teeth 6c2 are arranged on the outer wall of the connecting column 6c along the length direction. In the first round holes 6b1 of the corresponding support columns 6b, second rectangular notches 6b3 for the first round teeth 6c2 to move are arranged. The first round teeth 6c2 of the two connecting columns 6c are away from each other;

[0095] There are two springs 6d. The springs 6d are placed in the corresponding first round holes 6b1. The two ends of the springs 6d respectively abut against the corresponding connecting column 6c and the inner wall of the bottom of the first round hole 6b1;

[0096] There are two limit covers 6e. The two limit covers 6e are respectively arranged at one end of the corresponding support column 6b away from the connecting column 6c. At the center of each limit cover 6e, a moving hole 6e1 for the first round teeth 6c2 and the connecting column 6c to move is arranged;

[0097] The diameter of the abutting disc 6f is the same as the inner diameter of the storage barrel 5a. The abutting disc 6f is fixedly connected to one end of the connecting column 6c away from the support column 6b;

[0098] At one end of the inner wall of the storage barrel 5a close to the support column 6b, two third rectangular notches 5a1 are arranged. The two third rectangular notches 5a1 are symmetrically arranged with respect to the axis direction of the storage barrel 5a and the two third rectangular notches 5a1 are close to the corresponding first round teeth 6c2. There are two first gears 6g. The two first gears 6g are respectively rotatably arranged in the third rectangular notches 5a1 of the storage barrel 5a. The first gears 6g are respectively meshed with the first round teeth 6c2 of the corresponding connecting column 6c;

[0099] At one end of the storage barrel 5a close to the material taking head 5b, two second sliding grooves 5a2 are symmetrically arranged. There are two sliding bars 6h. The sliding bars 6h are slidably arranged in the corresponding second sliding grooves 5a2. A plurality of second round teeth 6h1 are arranged on the sliding bars 6h along the length direction. The second round teeth 6h1 are respectively meshed with the corresponding first gears 6g. On one side of the sliding bar 6h away from the second round teeth 6h1, third round teeth 6h2 are arranged along the length direction. On the second sliding groove 5a2, a first rectangular cut 5a21 for the third round teeth 6h2 to slide is arranged;

[0100] At one end of the material taking head 5b close to the storage barrel 5a, a third sliding groove 5b3 corresponding to the shape of the second sliding groove 5a2 is arranged. The second sliding groove 5a2 and the third sliding groove 5b3 are communicated with each other;

[0101] Two second gears 6i are arranged in each installation groove 5b1. The two second gears 6i are rotatably arranged on one side of the installation groove 5b1 close to the third tooth 6h2, and the two second gears 6i are arranged on both sides of the corresponding slide bar 6h along the length direction. The two second gears 6i are respectively meshed with the third teeth 6h2 of the corresponding slide bar 6h;

[0102] Two first bearings 6j are arranged on one side of each installation groove 5b1 away from the second gear 6i. The first bearings 6j are coaxially arranged with the corresponding second gears 6i;

[0103] There are multiple first lead screws 6k. One end of the first lead screw 6k is fixedly connected to the center of the corresponding second gear 6i. The end of the first lead screw 6k away from the second gear 6i is fixedly arranged in the corresponding first bearing 6j. The thread directions of the first lead screws 6k in the same installation groove 5b1 are opposite;

[0104] A second slider 6k1 is arranged on each first lead screw 6k. The second slider 6k1 is threadedly connected to the first lead screw 6k. One end of each second slider 6k1 away from the storage barrel 5a is fixedly connected to the corresponding arc-shaped sealing plate 6a through a connecting rod 6l.

[0105] When the material-taking head 5b contacts the soil, as the material-taking head 5b continues to penetrate, the soil will enter the storage bucket 5a along with the material-taking head 5b. As the soil continuously enters, the soil will squeeze the contact disk 6f, and the contact disk 6f will be squeezed and move towards the direction close to the bottom of the storage bucket 5a. The contact disk 6f is fixedly connected to one end of the connecting column 6c away from the support column 6b. On the outer wall of one end of the connecting column 6c, first sliders 6c1 corresponding to the first sliding grooves 6b2 are symmetrically arranged. The first sliders 6c1 are slidably arranged in the corresponding first sliding grooves 6b2, which can improve the sliding stability of the connecting column 6c and ensure that the connecting column 6c can move along a fixed direction. As the connecting column 6c moves, the connecting column 6c squeezes the spring 6d. A plurality of first round teeth 6c2 are arranged on the outer wall of the connecting column 6c along the length direction. The first round teeth 6c2 of the two connecting columns 6c are away from each other. The mounting holes on the limit cover 6e can ensure that the connecting column 6c will not be ejected out of the first round hole 6b1 of the support column 6b by the spring 6d. On the inner wall of the storage bucket 5a near one end of the support column 6b, two third rectangular notches 5a1 are arranged. There are two first gears 6g, and the two first gears 6g are respectively rotatably arranged in the third rectangular notches 5a1 of the storage bucket 5a. The first gears 6g are respectively meshed with the first round teeth 6c2 of the corresponding connecting columns 6c. On one end of the storage bucket 5a near the material-taking head 5b, two second sliding grooves 5a2 are symmetrically arranged. There are two sliding bars 6h, and the sliding bars 6h are slidably arranged in the corresponding second sliding grooves 5a2. A plurality of second round teeth 6h1 are arranged on the sliding bars 6h along the length direction. The second round teeth 6h1 are respectively meshed with the corresponding first gears 6g. As the connecting column 6c moves, the first round teeth 6c2 on the connecting column 6c drive the corresponding first gears 6g to rotate. The first gears 6g are meshed with the second round teeth 6h1 on the sliding bars 6h, thereby pushing the sliding bars 6h to slide along the second sliding grooves 5a2. On one end of the material-taking head 5b near the storage bucket 5a, a third sliding groove 5b3 corresponding to the shape of the second sliding groove 5a2 is arranged. The second sliding groove 5a2 and the third sliding groove 5b3 are communicated with each other. The third sliding groove 5b3 can provide a sliding space for the sliding bar 6h. On one side of the sliding bar 6h away from the second round teeth 6h1, third round teeth 6h2 are arranged along the length direction. In each mounting groove 5b1, there are two second gears 6i. The two second gears 6i are rotatably arranged on one side of the mounting groove 5b1 close to the third round teeth 6h2 and the two second gears 6i are arranged on both sides of the corresponding sliding bar 6h along the length direction. The two second gears 6i are respectively meshed with the third round teeth 6h2 of the corresponding sliding bar 6h. Through the sliding of the sliding bar 6h, the second gears 6i meshed with it are driven to rotate. The two second gears 6i rotate in opposite directions, thereby driving the corresponding first lead screws 6k to rotate. The thread directions of the first lead screws 6k located in the same mounting groove 5b1 are opposite, thereby driving the second sliders 6k1 located in the same mounting hole to move along the same direction.One end of each second slider 6k1 away from the storage bucket 5a is fixedly connected to the corresponding arc-shaped sealing plate 6a through a connecting rod 6l, so that the arc-shaped sealing plates 6a approach each other, thereby cutting and sealing the soil blocks, so that the storage bucket 5a contains soil blocks with a fixed volume to be detected, avoiding the problem that the soil blocks cannot be pulled out due to direct insertion, and improving the integrity of the soil blocks.

[0106] See Figures 8 to 10 As shown, a strip-shaped notch 5a3 is provided on the outer wall of the storage bucket 5a. The strip-shaped notch 5a3 extends along the length direction of the storage bucket 5a and penetrates the storage bucket 5a. A fourth chute 5a4 is provided on the inner wall of one side of the strip-shaped notch 5a3 along the length direction;

[0107] One end of the contact plate 6f away from the support column 6b is further provided with a push plate 7. The push plate 7 has the same diameter as the contact plate 6f. The outer walls of both sides of the push plate 7 close to the strip-shaped notch 5a3 are provided with protruding rods 7a corresponding to the width of the strip-shaped notch 5a3. A third slider 7b corresponding to the fourth chute 5a4 is provided on each protruding rod 7a. The third slider 7b of the protruding rod 7a is slidably arranged in the corresponding fourth chute 5a4.

[0108] When the material is taken out, as the sampling tube 4a is moved out of the ground, due to the particularity of the blocking assembly 6, the soil blocks set in the storage barrel 5a cannot be easily taken out. A pushing plate 7 is further provided at the end of the friction plate 6f away from the support column 6b. The pushing plate 7 has the same diameter as the friction plate 6f. The outer wall of the storage barrel 5a is provided with a strip notch 5a3. The strip notch 5a3 extends along the length direction of the storage barrel 5a and the strip notch 5a3 passes through the storage barrel 5a. A fourth slide groove 5a4 is provided on one side inner wall of the strip notch 5a3 along the length direction. Outer walls of both sides of the pushing plate 7 close to the strip notch 5a3 are provided with protruding rods 7a corresponding to the strip notch 5a3. Each protruding rod 7a is provided with a third slider 7b corresponding to the fourth slide groove 5a4. The third slider 7b of the protruding rod 7a can be slidably set in the corresponding fourth slide groove 5a4. The pushing plate 7 moves in the direction away from the contact plate 6f, so that the connecting column 6c not only squeezes the spring 6d, but the connecting column 6c is affected by the elastic force of the spring 6d and moves in the direction away from the support column 6b. The first gear tooth 6c2 on the connecting column 6c drives the first gear 6g to rotate, and the first gear 6g is engaged with the second gear tooth 6h1 of the slide bar 6h, driving the slide bar 6h to move in the direction close to the connecting column 6c. During the movement of the slide bar 6h, the third gear tooth 6h2 drives the second gear 6i to rotate, and the second gear 6i drives the corresponding first screw rod 6k to rotate. Since the thread directions of the first screw rod 6k on the same side are opposite, the second slider 6k1 is driven to move in the direction away from the center of the material taking head 5b, thereby opening the arc-shaped sealing plate 6a. As the pushing plate 7 continues to move, the soil blocks in the storage bucket 5a are pushed out of the storage bucket 5a, making it convenient for the staff to collect them.

[0109] See also Figure 9 and Figure 10 As shown, a rotating rod 7c is provided at one end of each extending rod 7a away from the pushing plate 7. The rotating rod 7c has the same shape as the strip-shaped notch 5a3. One end of the rotating rod 7c is hinged to the end of the extending rod 7a away from the pushing plate 7. A first magnet 7d is provided at the center of the end of the rotating rod 7c away from the extending rod 7a. A second magnet 5a31 is provided at the center of the end of the strip-shaped notch 5a3 away from the pushing plate 7. The first magnet 7d and the second magnet 5a31 are magnetically attracted to each other.

[0110] In the sampling state, the first magnet 7d and the second magnet 5a31 are magnetically attracted to each other, thereby fixing the rotating rod 7c in the strip-shaped gaps 5a3 at both ends, thereby preventing the soil blocks entering the storage barrel 5a from being contaminated and ensuring the purity of the storage barrel 5a. When the sampling is completed, one end of the rotating rod 7c is hinged to the extending rod 7a, thereby opening the rotating rod 7c and extending the force-bearing length of the pushing tray 7, so that the staff can push the pushing tray 7 more conveniently.

[0111] See also Figure 5, and Figure 6 As shown in and Figure 6 , each rotating rod 7c is provided with a triangular groove 7e, and the triangular groove 7e is arranged on one side of the rotating rod 7c away from the center of the storage barrel 5a.

[0112] By providing the triangular groove 7e on the rotating rod 7c, and the triangular groove 7e is arranged on one side of the rotating rod 7c away from the center of the storage barrel 5a. When the first magnet 7d attracts the second magnet 5a31, the staff can easily pull out the rotating rod 7c by inserting a finger into the triangular groove 7e, avoiding the situation that the rotating rod 7c cannot be removed due to the magnetic attraction between the first magnet 7d and the second magnet 5a31.

[0113] See Figure 10 and Figure 3 As shown in Figure 10 and Figure 3 , a pushing component 8 for pushing the sampling tube 5 to move is further arranged in the sampling cylinder 4a;

[0114] The pushing component 8 includes a sealing cover 8a, a rotating rod 8b and a knob 8c;

[0115] The sealing cover 8a is arranged on the top of the sampling cylinder 4a, and a third through hole 8a1 is arranged at the center of the sealing cover 8a;

[0116] The rotating rod 8b is rotatably arranged at the center of the sampling cylinder 4a and is coaxially arranged with the sampling cylinder 4a. One end of the rotating rod 8b away from the inner wall of the bottom of the sampling cylinder 4a is rotatably arranged in the third through hole 8a1;

[0117] A plurality of third gears 8b1 are arranged along the length direction of the rotating rod 8b. The centers of the third gears 8b1 are at the same horizontal plane as the center of the material taking hole 4a1. A plurality of tooth grooves 5a5 are arranged along the length direction on one outer wall of the storage barrel 5a, and the tooth grooves 5a5 face the center of the sampling cylinder 4a. The third gears 8b1 are respectively meshed with the tooth grooves 5a5 of the storage barrel 5a slidably arranged in the material taking hole 4a1;

[0118] The knob 8c is rotatably arranged at the center of the top of the sealing cover, and the knob 8c is fixedly connected with one end of the rotating rod 8b away from the inner wall of the bottom of the sampling cylinder 4a.

[0119] When the sampling cylinder 4a is inserted into the hole drilled by the screw rod, the staff rotates the knob 8c. The knob 8c drives a plurality of third gears 8b1 to rotate. The centers of the third gears 8b1 are at the same horizontal plane as the center of the material taking hole 4a1. A plurality of tooth grooves 5a5 are arranged along the length direction on one outer wall of the storage barrel 5a, and the tooth grooves 5a5 face the center of the sampling cylinder 4a. The third gears 8b1 are respectively meshed with the corresponding tooth grooves 5a5 of the storage barrel 5a in the material taking hole 4a1, so as to drive a plurality of sampling tubes 5 to move towards the inner wall of the hole, thereby sampling soil blocks at different heights in the hole.

[0120] See Figure 12 、 Figure 3 、 Figure 5 and Figure 6 As shown in Figure 12 , Figure 3 , Figure 5 and Figure 6 , a limiting block 5a6 is provided on the outer wall of one end of the storage cylinder away from the material taking head 5b. A plurality of guide plates 4a2 are also provided in the sampling cylinder 4a. Arc-shaped guiding ends 4a3 for placing the storage barrel 5a are provided at both ends of the top of the guide plate 4a2. The storage barrel 5a is slidably arranged in the corresponding arc-shaped guiding ends 4a3. A fourth rectangular notch 4a4 for avoiding the limiting block 5a6 is provided on each arc-shaped guiding end 4a3.

[0121] By providing a plurality of guide plates 4a2 in the sampling cylinder 4a, arc-shaped guiding ends 4a3 for placing the storage barrel 5a are provided at both ends of the top of the guide plate 4a2. The storage barrel 5a is slidably arranged in the corresponding arc-shaped guiding ends 4a3. A fourth rectangular notch 4a4 for avoiding the limiting block 5a6 is provided on each arc-shaped guiding end 4a3. A limiting block 5a6 is provided on the outer wall of one end of the sampling cylinder 4a away from the material taking head 5b. When the staff rotates the knob 8c, the limiting block 5a6 will contact the inner wall of the sampling cylinder 4a at the limit position, thereby preventing the entire sampling tube 5 from popping out of the sampling cylinder 4a.

[0122] See Figure 12 and Figure 1 As shown in Figure 12 and Figure 1 , two driving mechanisms 9 for driving the movement of the sampling cylinder 4a and the rotating tube 3a are further provided on the turntable 2;

[0123] Each driving mechanism 9 includes a slide rail 9a, a fourth slider 9b, a second lead screw 9c, a first rotary driver 9d and a fixing ring 9e;

[0124] The slide rail 9a is arranged vertically on the turntable 2;

[0125] The fourth slider 9b is slidably arranged on the slide rail 9a, and a threaded hole 9b1 is arranged on the fourth slider 9b along the length direction of the slide rail 9a;

[0126] Both ends of the second lead screw 9c are rotatably arranged at both ends of the slide rail 9a, and the second lead screw 9c is threadedly connected with the fourth slider 9b;

[0127] The first rotary driver 9d is arranged vertically at one end of the slide rail 9a away from the turntable 2, and the output shaft of the first rotary driver 9d passes through the slide rail 9a and is fixedly connected with one end of the second lead screw 9c away from the turntable 2;

[0128] The outer periphery of the fixed ring 9e is provided with a rectangular protruding end 9e1 extending outward. The rectangular protruding end 9e1 is fixedly connected to one end of the fourth slider 9b perpendicular to the length direction of the slide rail 9a. A fourth through hole 9e2 for placing the sampling cylinder 4a and the rotating tube 3a is provided at the center of the fixed ring 9e.

[0129] The first rotation driver drives the second lead screw to rotate. The second lead screw is threadedly connected to the fourth slider. The fourth slider slides along the length direction of the slide rail. The outer periphery of the fixed ring is provided with a rectangular protruding end extending outward. The rectangular protruding end is fixedly connected to one end of the fourth slider perpendicular to the length direction of the slide rail. A fourth through hole for placing the sampling cylinder and the rotating tube is provided at the center of the fixed ring, thereby driving the corresponding sampling cylinder and rotating tube to move up and down.

[0130] See Figure 13 Figure 3 As shown, the drilling mechanism 3 further includes a soil storage tank 3c and a second rotation driver 3d;

[0131] The bottom of the soil storage tank 3c is provided with a funnel-shaped discharge port 3c1. The top of the rotating tube 3a is fixedly arranged inside the discharge port 3c1 at the bottom of the soil storage tank 3c;

[0132] The second rotation driver 3d is arranged at the center of the top of the soil storage tank 3c. One end of the screw rod far from the turntable 2 extends into the soil storage tank 3c through the discharge port 3c1 and is fixedly connected to the output shaft of the second rotation driver 3d.

[0133] By providing a funnel-shaped discharge port 3c1 at the bottom of the soil storage tank 3c at the top of the rotating tube 3a, the top of the rotating tube 3a is fixedly arranged inside the discharge port 3c1 at the bottom of the soil storage tank 3c; the second rotation driver 3d is arranged at the center of the top of the soil storage tank 3c. One end of the screw rod far from the turntable 2 extends into the soil storage tank 3c through the discharge port 3c1 and is fixedly connected to the output shaft of the second rotation driver 3d. The second rotation driver 3d drives the screw rod to rotate, and the soil blocks driven to move upward by the screw rod enter the soil storage tank 3c for storage. Subsequently, the sampling cylinder 4a samples. After sampling is completed, the second rotation driver 3d drives the screw rod to rotate in the opposite direction, conveying the soil blocks in the soil storage tank 3c to the ground and blocking the sampling holes, thereby ensuring the integrity of the ground.

[0134] The above embodiments only represent one or several implementation manners of the present invention. The description is relatively specific and detailed, but it cannot be understood as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A portable soil pollutant monitoring device capable of collecting at different depths, comprising a base (1) and a turntable (2), the turntable (2) being rotatably arranged at the center of the top of the base (1), characterized in that, It further includes a drilling mechanism (3) and a sampling mechanism (4) provided on the turntable (2); Two first through holes (2a) symmetrically distributed along the axis are provided at the top edge of the turntable (2), and the drilling mechanism (3) and the sampling mechanism (4) are respectively located above the corresponding first through holes (2a); The drilling mechanism (3) includes a rotating pipe (3a) that can move along the axis direction of the turntable (2). The rotating pipe (3a) is slidably arranged in the corresponding first through hole (2a). A threaded rod (3b) is rotatably arranged at the center of the rotating pipe (3a). The bottom of the threaded rod (3b) is conical and extends out of the rotating pipe (3a); The sampling mechanism (4) includes a sampling cylinder (4a) that can move along the axis direction of the turntable (2). The sampling cylinder (4a) is slidably arranged in the corresponding first through hole (2a); A plurality of material taking holes (4a1) are equidistantly arranged along the axis direction of the sampling cylinder (4a). The material taking holes (4a1) are arranged along the circumferential direction of the sampling cylinder (4a), and the material taking holes (4a1) on the same horizontal plane are centrosymmetric with respect to the axis center of the sampling cylinder (4a). A sampling pipe (5) for extracting soil is slidably arranged in the material taking holes (4a1); The rotating pipe (3a) has the same diameter as the sampling cylinder (4a). A second through hole (1a) is provided on the base (1). The first through hole (2a) has the same diameter as the second through hole (1a), and the distance from the first through hole (2a) to the center of the turntable (2) is the same as the distance from the second through hole (1a) to the center of the base (1); The sampling pipe (5) includes a storage barrel (5a) and a material taking head (5b); The material taking head (5b) is cylindrical. The inner diameter of the material taking head (5b) is the same as the inner diameter of the storage barrel (5a). The outer diameter of the material taking head (5b) is the same as the outer diameter of the storage barrel (5a). One end of the material taking head (5b) is fixedly connected to the open end of the storage barrel (5a). The storage barrel (5a) is slidably arranged in the corresponding material taking hole (4a1); A blocking component (6) for cutting soil blocks is further provided in the material taking head (5b). The blocking component (6) includes two arc-shaped blocking plates (6a) that can move towards each other and contact along the diameter direction of the material taking head (5b). The opposite ends of the arc-shaped blocking plates (6a) are triangular. Two installation grooves (5b1) for placing the arc-shaped blocking plates (6a) are provided at one end of the material taking head (5b) close to the storage barrel (5a). The two installation grooves (5b1) are arranged mirror-symmetrically with respect to the axis of the material taking head (5b). A first rectangular notch (5b2) for avoiding the arc-shaped blocking plates (6a) is further provided in each installation groove (5b1). The first rectangular notch (5b2) communicates with the inside of the material taking head (5b); A pushing component (8) for pushing the sampling pipe (5) to move is further provided in the sampling cylinder (4a); The pushing component (8) includes a blocking cover (8a), a rotating rod (8b), and a knob (8c); The blocking cover (8a) is arranged at the top of the sampling cylinder (4a). A third through hole (8a1) is provided at the center of the blocking cover (8a); The rotating rod (8b) is rotatably arranged at the center of the sampling cylinder (4a) and is coaxially arranged with the sampling cylinder (4a). An end of the rotating rod (8b) away from the bottom inner wall of the sampling cylinder (4a) is rotatably arranged in the third through hole (8a1); The rotating rod (8b) is provided with a plurality of third gears (8b1) along the length direction, the center of the third gears (8b1) and the center of the material taking hole (4a1) are in the same horizontal plane, and the outer wall of one side of the material storage barrel (5a) is provided with a plurality of tooth grooves (5a5) along the length direction, the tooth grooves (5a5) are oriented toward the center of the sampling tube (4a), and the third gears (8b1) are respectively engaged with the tooth grooves (5a5) of the material storage barrel (5a) slidably provided in the material taking hole (4a1); The knob (8c) is rotatably arranged at the center of the top of the sealing cover, and the knob (8c) is fixedly connected to an end of the rotating rod (8b) away from the bottom inner wall of the sampling tube (4a); A limiting block (5a6) is provided on the outer wall of one end of the material storage barrel away from the material taking head (5b), and a plurality of guide plates (4a2) are further provided in the sampling barrel (4a). Arc-shaped guide ends (4a3) for placing the material storage barrel (5a) are provided at both ends of the top of the guide plates (4a2). The material storage barrel (5a) is slidably arranged in the corresponding arc-shaped guide ends (4a3), and each arc-shaped guide end (4a3) is further provided with a fourth rectangular notch (4a4) for avoiding the limiting block (5a6).

2. The portable soil pollutant monitoring device with the ability to collect pollutants at different depths according to claim 1, wherein, The blocking assembly (6) further includes a support column (6b), a connecting column (6c), a spring (6d), a limit cover (6e), a contact plate (6f), a first gear (6g), a slide bar (6h), a second gear (6i), a first bearing (6j), a first screw rod (6k) and a connecting rod (6l); There are two support columns (6b), one end of the support column (6b) is fixedly arranged on the inner wall of the bottom of the storage barrel (5a), and the two support columns (6b) are symmetrically arranged relative to the center of the sampling tube (4a); A first circular hole (6b1) is provided at the center of one end of each support column (6b) away from the inner wall of the bottom of the storage barrel (5a); two first sliding grooves (6b2) are provided on the inner wall of the first circular hole (6b1); the two first sliding grooves (6b2) are mirror-imaged and arranged corresponding to the center of the first circular hole (6b1); There are two connecting columns (6c), and the two connecting columns (6c) are slidably arranged in the corresponding first circular holes (6b1). The outer wall of one end of the connecting column (6c) is symmetrically provided with a first sliding block (6c1) corresponding to the first sliding groove (6b2). The first sliding block (6c1) is slidably arranged in the corresponding first sliding groove (6b2). The outer wall of the connecting column (6c) is provided with a plurality of first gear teeth (6c2) along the length direction. A second rectangular notch (6b3) for the first gear teeth (6c2) to move is provided in the first circular hole (6b1) of the corresponding supporting column (6b). The first gear teeth (6c2) of the two connecting columns (6c) are away from each other. There are two springs (6d), which are placed in the corresponding first round holes (6b1). The two ends of the springs (6d) respectively abut against the corresponding connecting columns (6c) and the inner wall of the bottom of the first round holes (6b1). There are two limiting covers (6e), which are respectively arranged at one end of the corresponding support columns (6b) away from the connecting columns (6c). A moving hole (6e1) for the movement of the first round teeth (6c2) and the connecting columns (6c) is arranged at the center of each limiting cover (6e). The diameter of the abutting disc (6f) is the same as the inner diameter of the material storage barrel (5a). The abutting disc (6f) is fixedly connected to one end of the connecting column (6c) away from the support column (6b). Two third rectangular notches (5a1) are arranged at one end of the inner wall of the material storage barrel (5a) close to the support column (6b). The two third rectangular notches (5a1) are symmetrically arranged with respect to the axial direction of the material storage barrel (5a) and the two third rectangular notches (5a1) are close to the corresponding first round teeth (6c2). There are two first gears (6g), which are respectively rotatably arranged in the third rectangular notches (5a1) of the material storage barrel (5a). The first gears (6g) are respectively meshed with the first round teeth (6c2) of the corresponding connecting columns (6c). Two second chutes (5a2) are symmetrically arranged at one end of the material storage barrel (5a) close to the material taking head (5b). There are two sliding strips (6h), which are slidably arranged in the corresponding second chutes (5a2). A plurality of second round teeth (6h1) are arranged along the length direction of the sliding strips (6h). The second round teeth (6h1) are respectively meshed with the corresponding first gears (6g). A third round tooth (6h2) is arranged along the length direction on one side of the sliding strip (6h) away from the second round teeth (6h1). A first rectangular incision (5a21) for the sliding of the third round tooth (6h2) is arranged on the second chute (5a2). One end of the material taking head (5b) close to the material storage barrel (5a) is provided with a third chute (5b3) corresponding to the shape of the second chute (5a2). The second chute (5a2) and the third chute (5b3) are communicated with each other. Two second gears (6i) are arranged in each mounting groove (5b1). The two second gears (6i) are rotatably arranged on one side of the mounting groove (5b1) close to the third round tooth (6h2) and the two second gears (6i) are arranged on both sides of the corresponding sliding strip (6h) along the length direction. The two second gears (6i) are respectively meshed with the third round tooth (6h2) of the corresponding sliding strip (6h). Two first bearings (6j) are arranged on one side of each mounting groove (5b1) away from the second gear (6i). The first bearings (6j) are coaxially arranged with the corresponding second gears (6i). There are a plurality of first lead screws (6k). One end of the first lead screw (6k) is fixedly connected to the center of the corresponding second gear (6i). The end of the first lead screw (6k) away from the second gear (6i) is fixedly arranged in the corresponding first bearing (6j). The thread directions of the first lead screws (6k) located in the same mounting groove (5b1) are opposite. Each first screw rod (6k) is provided with a second slider (6k1), the second slider (6k1) being threadedly connected to the first screw rod (6k), and one end of each second slider (6k1) away from the material storage barrel (5a) is fixedly connected to the corresponding arc-shaped blocking plate (6a) via a connecting rod (6l).

3. The portable soil pollutant monitoring device capable of collecting pollutants at different depths according to claim 2, characterized in that, The outer wall of the material storage barrel (5a) is provided with a strip-shaped notch (5a3), the strip-shaped notch (5a3) extends along the length direction of the material storage barrel (5a) and the strip-shaped notch (5a3) passes through the material storage barrel (5a), and a fourth sliding groove (5a4) is provided on the inner wall of one side of the strip-shaped notch (5a3) along the length direction; A pushing plate (7) is further provided at one end of the contact plate (6f) away from the support column (6b). The pushing plate (7) has the same diameter as the contact plate (6f). Outer walls on both sides of the pushing plate (7) close to the strip-shaped notch (5a3) are provided with extension rods (7a) corresponding to the width of the strip-shaped notch (5a3). Each extension rod (7a) is provided with a third slider (7b) corresponding to the fourth slide groove (5a4). The third slider (7b) of the extension rod (7a) is slidably provided in the corresponding fourth slide groove (5a4).

4. The portable soil pollutant monitoring device capable of collecting pollutants at different depths according to claim 3, characterized in that, A rotating rod (7c) is provided at one end of each extending rod (7a) away from the pushing disc (7), the rotating rod (7c) having the same shape as the strip-shaped notch (5a3), one end of the rotating rod (7c) being hinged to one end of the extending rod (7a) away from the pushing disc (7), a first magnet (7d) is provided at the center of one end of the rotating rod (7c) away from the extending rod (7a), a second magnet (5a31) is provided at the center of one end of the strip-shaped notch (5a3) away from the pushing disc (7), and the first magnet (7d) and the second magnet (5a31) are magnetically attracted to each other.

5. The portable soil pollutant monitoring device according to claim 4, which is characterized in that, Each rotating rod (7c) is provided with a triangular groove (7e), and the triangular groove (7e) is provided on a side of the rotating rod (7c) away from the center of the material storage barrel (5a).

6. The portable soil pollutant monitoring device with the ability to collect pollutants at different depths according to claim 1, characterized in that, The turntable (2) is also provided with two driving mechanisms (9) for driving the sampling cylinder (4a) and the rotating tube (3a) to move respectively; Each driving mechanism (9) includes a slide rail (9a), a fourth slider (9b), a second screw rod (9c), a first rotary driver (9d) and a fixing ring (9e); The slide rail (9a) is arranged on the turntable (2) in a vertical state; The fourth slider (9b) is slidably arranged on the slide rail (9a), and the fourth slider (9b) is provided with a threaded hole (9b1) along the length direction of the slide rail (9a); The two ends of the second screw rod (9c) are rotatably arranged at the two ends of the slide rail (9a), and the second screw rod (9c) is threadedly connected to the fourth slider (9b); The first rotary driver (9d) is vertically arranged at one end of the slide rail (9a) away from the turntable (2), and the output shaft of the first rotary driver (9d) passes through the slide rail (9a) and is fixedly connected to one end of the second screw rod (9c) away from the turntable (2); The outer periphery of the fixed ring (9e) is provided with a rectangular protruding end (9e1) extending outward. The rectangular protruding end (9e1) is fixedly connected to one end of the fourth slider (9b) perpendicular to the length direction of the slide rail (9a). A fourth through hole (9e2) for placing the sampling cylinder (4a) and the rotating pipe (3a) is provided at the center of the fixed ring (9e).

7. The portable soil pollutant monitoring device capable of collecting pollutants at different depths according to claim 1, wherein The drilling mechanism (3) further includes a soil storage tank (3c) and a second rotating driver (3d); A funnel-shaped discharge port (3c1) is provided at the bottom of the soil storage tank (3c). The top of the rotating pipe (3a) is fixedly arranged inside the discharge port (3c1) at the bottom of the soil storage tank (3c); The second rotating driver (3d) is arranged at the center of the top of the soil storage tank (3c). One end of the screw rod away from the turntable (2) extends into the soil storage tank (3c) through the discharge port (3c1) and is fixedly connected to the output shaft of the second rotating driver (3d).

Images