Soil pollution monitoring device

Abstract

The invention belongs to the technical field of soil monitoring, and particularly relates to a soil pollution monitoring device which comprises a supporting frame. An ejector rod is arranged on the support frame; the bottom end of the ejector rod is fixedly connected with a drill rod; a sampling opening is formed in one side of the top of the ejector rod; a sampling barrel is arranged in an inner cavity of the ejector rod and an inner cavity of the drill rod in a sliding manner; the sampling barrel can be taken out from the sampling opening; the bottom end of the drill rod is fixedly connected with a drill bit; the driving assembly pushes the sampling barrel to slide downwards along the inner cavities of the ejector rod and the drill rod, the sampling barrel descends into the drill bit, the bottom of the drill bit is pushed to be opened, the sampling barrel is inserted into soil at the bottom of the sampling hole, and the periphery of the bottom of the sampling barrel cuts the soil, so that a cylindrical soil sample column is formed in the sampling barrel; the sampling barrel is taken out through the sampling opening of the ejector rod and is replaced by a new sampling barrel; therefore, complete columnar soil samples of different soil layers can be collected, and the pollution distribution and diffusion condition of soil can be conveniently detected.

Description

Technical Field

[0001] The invention belongs to the technical field of soil monitoring, in particular to a soil pollution monitoring device. Background Art

[0002] Soil pollution monitoring is one of the important contents of environmental monitoring. It is mainly used to find out the background value, monitor, forecast and control the soil environmental quality. The results of soil pollution monitoring are of great significance for understanding the soil quality status, implementing soil pollution control and prevention methods and quality management.

[0003] A patent application with publication number CN111198109A discloses a multi-layer soil sampler for soil monitoring, including a pressing plate, a limiting plate, a handle, a soil sampling device, an adjusting device and a pushing device, wherein the limiting plates are symmetrically installed on the outer side of the pressing plate, the limiting plates are located on the front and rear sides of the pressing plate, a handle is installed on the upper end of the pressing plate, and a rectangular groove is arranged inside the pressing plate; the invention can solve the problem that when existing equipment samples soil with a harder texture, it is impossible to sample and collect soil of different depths in one sampling operation, thereby increasing the sampling work steps, manpower and material resources, and reducing the sampling work efficiency. At the same time, it is impossible to collect soil with a harder texture, thereby reducing the utilization rate of the equipment, and in the process of recycling the collected soil, it cannot be separated from the soil layer, and the phenomenon of mixing of soil of different depths is easy to occur, thereby reducing the accuracy of soil collection.

[0004] When detecting soil pollution, the accuracy of soil sample collection directly affects the accuracy of the test results; although the above-mentioned soil sampler can collect soil from different soil layers, since the collected soil will be crushed before being taken out, the soil pollution will be evenly mixed and dispersed, which reduces the accuracy of detecting the distribution and diffusion of soil pollution.

[0005] To this end, the present invention provides a soil pollution monitoring device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a soil pollution monitoring device described in the present invention comprises a support frame; a mandrel is arranged on the support frame; the mandrel can be raised and lowered on the support frame; a drill rod is fixedly connected to the bottom end of the mandrel; a plurality of drill rods can be connected end to end; an inner cavity is provided inside the mandrel and inside the drill rod; a sampling port is provided on one side of the top of the mandrel; a sampling barrel is slidably arranged in the inner cavity of the mandrel and the drill rod; a driving assembly is arranged on the top of the sampling barrel, and the driving assembly is used to drive the sampling barrel to rise and fall; the sampling barrel can be taken out from the sampling port The sampling tube is taken out from the drill hole; a drill bit is fixedly connected to the bottom end of the drill rod, and the bottom end of the drill bit can be opened and closed; the driving component pushes the sampling tube to slide downward along the inner cavity of the mandrel and the drill rod, and the sampling tube descends into the inside of the drill bit, and the bottom of the drill bit is pushed open, so that the sampling tube moves to the bottom of the drill bit, and the sampling tube is inserted into the soil at the bottom of the sampling hole. The outer periphery of the bottom of the sampling tube cuts the soil, so that a cylindrical soil sample column is formed inside the sampling tube; the sampling tube is taken out through the sampling port of the mandrel, and a new sampling tube is replaced; thereby, complete columnar soil samples of different soil layers can be collected, which is convenient for detecting the pollution distribution and diffusion of the soil.

[0008] Preferably, the drive assembly comprises a cylinder arranged at the top of the sampling cylinder; the outer wall of the cylinder is slidably matched with the inner cavity of the push rod and the drill rod; the inner cavity of the push rod and the drill rod are fixedly connected with a rack on the side away from the sampling port; a notch is provided on the side of the cylinder close to the rack; a pair of No. 1 gears are rotatably installed inside the notch of the cylinder; the two No. 1 gears are meshed with the rack; a U-shaped frame is fixedly connected to the inner bottom surface of the cylinder; a rotating rod is rotatably installed in the middle of the U-shaped frame; the outer ring of the rotating rod and the rotating ring of the No. 1 gear The outer rings of the shafts are all fixedly connected with synchronous wheels; the outer rings of the multiple synchronous wheels are sleeved with synchronous belts; the inner bottom surface of the cylinder is fixedly connected with motor No. 1; the output shaft of motor No. 1 and the end of the rotating rod are both fixedly connected with bevel gears; the two bevel gears are meshed with each other; a guide wheel is rotatably installed on the top of the U-shaped frame; the outer ring of the guide wheel is slidably matched with the outer ring of the synchronous belt; gear No. 1 rotates in the groove of the cylinder, and gear No. 1 is meshed with the rack, driving the cylinder to rise and fall in the inner cavity of the push rod and the drill rod; thereby driving the sampling tube to rise and fall in the inner cavity of the push rod and the drill rod.

[0009] Preferably, the top of the drill rod and the top inner ring of the drill bit are both fixed with a convex ring; a plurality of positioning convex plates are fixed around the top of the convex ring; the bottom inner ring of the drill rod and the bottom inner ring of the push rod are both provided with annular grooves matching the convex ring; a positioning groove matching the positioning convex plate is provided around the top of the annular groove; the rack inside the drill rod can be accurately docked; thereby facilitating the lifting and lowering of the sampling barrel and improving the stability and smoothness of the movement of the sampling barrel.

[0010] Preferably, a swivel seat is rotatably installed on the top of the support frame; a spline groove is opened in the middle of the swivel seat; a spline column is slidably installed inside the spline groove; the top outer ring of the swivel seat is fixedly connected to a gear ring; a No. 2 motor is fixedly connected to one side of the top of the support frame; the output shaft of the No. 2 motor is fixedly connected to the No. 2 gear; the No. 2 gear is meshed with the gear ring; a vertical slide is fixedly connected to one side of the support frame; a screw rod is rotatably installed in the middle of the vertical slide; a slide plate is slidably installed inside the vertical slide; the top surface of the slide plate is fixedly connected to the bottom end of the spline column; the screw rod is threadedly matched with the slide plate; a No. 3 motor is fixedly connected to the top of the vertical slide; the output shaft of the No. 3 motor is fixedly connected to the top of the screw rod; the bottom of the spline column is rotatably connected to the slide plate, and the bottom of the spline column passes through the slide plate; the bottom end of the spline column is bolted to the top end of the push rod.

[0011] Preferably, the outer ring of the drill rod and the outer ring of the drill bit are both fixed with spiral blades; the spiral blades transport the soil in the sampling hole upward out of the sampling hole, thereby reducing the crushed soil in the sampling hole, reducing the impact of the crushed soil on sampling, and then improving the accuracy of sampling with the sampling tube.

[0012] Preferably, a rotating plate is rotatably mounted on the bottom end of the cylinder; fixed inserts are fixedly connected to both sides of the bottom surface of the rotating plate; the two fixed inserts are respectively located on both sides of the sampling port; slots matching the fixed inserts are opened on both sides of the top of the sampling cylinder; a No. 4 motor is fixedly connected to the inner bottom surface of the cylinder; the output shaft of the No. 4 motor is fixedly connected to the rotating plate; the No. 4 motor drives the rotating plate to rotate, and drives the sampling cylinder to rotate, so that the sampling cylinder is rotated and inserted into the soil at the bottom of the sampling hole; thereby reducing the resistance encountered by the sampling cylinder during sampling and improving the sampling efficiency of the sampling cylinder.

[0013] Preferably, a plurality of guide strips are fixedly connected around the inner cavity of the push rod and the drill rod; a plurality of guide grooves are opened around the outer ring of the cylinder body; the guide grooves are slidably matched with the guide strips; thereby effectively improving the stability of the movement of the sampling cylinder, and then reducing the possibility of the soil sample column collected inside the sampling cylinder falling off.

[0014] Preferably, the inner ring of the sampling barrel is fixedly connected with a plurality of spiral convex strips; the bottom of the sampling barrel is fixedly connected with a plurality of inclined convex teeth; the inclined convex teeth are provided to improve the effect of the sampling barrel rotating and cutting the soil, and improve the sampling effect of the sampling barrel; the spiral convex strips are provided to increase the friction resistance between the soil sample column inside the sampling barrel and the inner wall of the sampling barrel, reduce the slipping of the soil sample column, and improve the integrity of the soil sample column.

[0015] Preferably, an air hole is opened at the top of the inner cavity of the sampling tube; a transverse hole is opened at the top of the air hole; both ends of the transverse hole pass through the outer wall of the sampling tube; a telescopic column is fixedly connected to the middle of the top surface of the air hole; a rubber diaphragm is fixedly connected to the bottom of the telescopic column; the rubber diaphragm can cover the bottom of the air hole; a spring is provided on the outer ring of the telescopic column; a sealed environment is formed between the top of the soil sample column and the top of the sampling tube, so that the soil sample column is firmly adsorbed on the inside of the sampling tube, thereby further reducing the possibility of the soil sample column detaching from the sampling tube.

[0016] Preferably, a plurality of conical plates are hinged around the bottom of the drill bit; a torsion spring is provided on the outer ring of the rotating shaft of the conical plate; the plurality of conical plates can form the bottom cone of the drill bit; an arc-shaped strip is fixedly connected to the top of the inner ring of the conical plate; the bottom of the sampling tube contacts the arc-shaped strip, pushing the arc-shaped strip and the conical plate to rotate and unfold outward, thereby opening the bottom of the drill bit, so that the sampling tube can pass through the drill bit for sampling.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. A soil pollution monitoring device described in the present invention comprises a support frame, a mandrel, a drill rod, a sampling port, a sampling barrel and a drill bit; the mandrel rotates on the support frame and moves downward at the same time, driving the drill rod and the drill bit to rotate and descend, and drilling a sampling hole in the soil; the driving component pushes the sampling barrel to slide downward along the inner cavity of the mandrel and the drill rod, and the sampling barrel descends to the inside of the drill bit, and the bottom of the drill bit is pushed open, so that the sampling barrel moves to the bottom of the drill bit, and the sampling barrel is inserted into the soil at the bottom of the sampling hole. The outer periphery of the bottom of the sampling barrel cuts the soil, so that a cylindrical soil sample column is formed inside the sampling barrel; the sampling barrel is taken out through the sampling port of the mandrel and replaced with a new sampling barrel; thereby, complete columnar soil samples of different soil layers can be collected, which is convenient for detecting the pollution distribution and diffusion of the soil.

[0019] 2. A soil pollution monitoring device described in the present invention comprises an air hole, a transverse hole, a telescopic column, a rubber diaphragm and a spring; when the sampling tube is inserted into the soil at the bottom of the sampling hole and a cylindrical soil sample column is formed inside the sampling tube, the air between the top of the soil sample column and the top of the sampling tube is squeezed, and the compressed air pushes the rubber diaphragm inside the air hole upward, so that the telescopic column shrinks in length, the spring is compressed, and the air is discharged through the air hole and the transverse hole; thereafter, the spring is reset, pushing the rubber diaphragm to cover and seal the bottom of the air hole, so that a sealed environment is formed between the top of the soil sample column and the top of the sampling tube, so that the soil sample column is firmly adsorbed inside the sampling tube, thereby further reducing the possibility of the soil sample column detaching from the sampling tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 is an exploded view of the present invention;

[0023] Figure 3 is a stereoscopic diagram of the ejector rod in the present invention;

[0024] Figure 4 is a stereoscopic diagram of a drill rod in the present invention;

[0025] Figure 5 It is a stereoscopic diagram of the sampling tube and the cylinder body in the present invention;

[0026] Figure 6 It is an exploded view of the sampling tube and the cylinder body in the present invention;

[0027] Figure 7 It is a bottom structural diagram of the cylinder in the present invention;

[0028] Figure 8 It is the internal structure diagram of the cylinder in the present invention;

[0029] Fig. 9 It is an internal exploded view of the cylinder in the present invention;

[0030] Fig.10 is a cross-sectional view of the sampling tube of the present invention;

[0031] Fig.11 is a stereogram of a drill bit in the present invention;

[0032] Fig.12 is a cross-sectional view of the drill bit of the present invention;

[0033] In the figure: 1, support frame; 2, top rod; 3, drill rod; 4, sampling port; 5, sampling tube; 6, drill bit; 7, tube body; 8, rack; 9, gear No. 1; 10, U-shaped frame; 11, rotating rod; 12, synchronous wheel; 13, synchronous belt; 14, motor No. 1; 15, bevel gear; 16, guide wheel; 17, convex ring; 18, positioning convex plate; 19, ring groove; 20, positioning groove; 21, rotating seat; 22, spline groove; 23, spline column; 24, gear ring; 25. Motor No. 2; 26. Gear No. 2; 27. Vertical slide; 28. Screw; 29. ​​Slide plate; 30. Motor No. 3; 31. Spiral blade; 32. Fixed insert; 33. Slot; 34. Guide strip; 35. Guide groove; 36. Spiral convex strip; 37. Air hole; 38. Horizontal hole; 39. Telescopic column; 40. Rubber diaphragm; 41. Spring; 42. Conical plate; 43. Arc strip; 44. Turn plate; 45. Motor No. 4; 46. Inclined convex tooth. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0035] like Figures 1 to 3 As shown, a soil pollution monitoring device according to an embodiment of the present invention comprises a support frame 1; a mandrel 2 is arranged on the support frame 1; the mandrel 2 can be raised and lowered on the support frame 1; a drill rod 3 is fixedly connected to the bottom end of the mandrel 2; a plurality of the drill rods 3 can be connected end to end; an inner cavity is provided inside the mandrel 2 and inside the drill rod 3; a sampling port 4 is provided on one side of the top of the mandrel 2; a sampling barrel 5 is slidably arranged in the inner cavity of the mandrel 2 and the drill rod 3; a driving assembly is arranged on the top of the sampling barrel 5, and the driving assembly is used to drive the sampling barrel 5 to rise and fall; the sampling barrel 5 can be taken out from the sampling port 4; a drill bit 6 is fixedly connected to the bottom end of the drill rod 3, and the bottom end of the drill bit 6 can be opened and closed;

[0036] During operation, the support frame 1 is placed on the soil surface to be sampled, the drill rod 3 is connected and fixed to the bottom end of the mandrel 2, the drill bit 6 is installed to the bottom end of the drill rod 3, and the mandrel 2 rotates on the support frame 1 and moves downward at the same time, driving the drill rod 3 and the drill bit 6 to rotate and descend, and drilling a sampling hole in the soil; at the same time, according to the required sampling depth, a new drill rod 3 is installed to the bottom end of the mandrel 2 to increase the depth of the sampling hole; when the required depth is reached, the mandrel 2 is lifted to a certain height, driving the drill rod 3 and the drill bit 6 to rise, so that the bottom of the drill bit 6 is separated from the bottom of the sampling hole, so that the bottom of the drill bit 6 can be opened; the driving component pushes the sampling tube 5 along The inner cavities of the push rod 2 and the drill rod 3 slide downward, and the sampling tube 5 descends into the interior of the drill bit 6, pushing the bottom of the drill bit 6 open, so that the sampling tube 5 moves to the bottom of the drill bit 6, and the sampling tube 5 is inserted into the soil at the bottom of the sampling hole. The outer circumference of the bottom of the sampling tube 5 cuts the soil, so that a cylindrical soil sample column is formed inside the sampling tube 5; then, the driving assembly drives the sampling tube 5 to slide upward along the inner cavities of the push rod 2 and the drill rod 3, and the sampling tube 5 is taken out through the sampling port 4 of the push rod 2, and a new sampling tube 5 is replaced; thereby, complete columnar soil samples of different soil layers can be collected, which is convenient for detecting the distribution and diffusion of soil pollution.

[0037] like Figures 3 to 9As shown, the driving assembly includes a barrel 7 arranged at the top of the sampling barrel 5; the outer wall of the barrel 7 is slidably matched with the inner cavity of the mandrel 2 and the drill rod 3; the inner cavity of the mandrel 2 and the drill rod 3 is fixedly connected with a rack 8 on one side away from the sampling port 4; a notch is provided on the side of the barrel 7 close to the rack 8; a pair of No. 1 gears 9 are rotatably installed inside the notch of the barrel 7; the two No. 1 gears 9 are meshed with the rack 8; a U-shaped frame 10 is fixedly connected to the inner bottom surface of the barrel 7; the U-shaped frame 10 A rotating rod 11 is rotatably installed in the middle part; the outer ring of the rotating rod 11 and the outer ring of the rotating shaft of the No. 1 gear 9 are fixedly connected with a synchronous wheel 12; the outer rings of the multiple synchronous wheels 12 are sleeved with a synchronous belt 13; the inner bottom surface of the cylinder 7 is fixedly connected with a No. 1 motor 14; the output shaft of the No. 1 motor 14 and the end of the rotating rod 11 are fixedly connected with a bevel gear 15; the two bevel gears 15 are meshed with each other; a guide wheel 16 is rotatably installed on the top of the U-shaped frame 10; the outer ring of the guide wheel 16 is slidably matched with the outer ring of the synchronous belt 13;

[0038] During operation, the outer ring of the synchronous belt 13 is squeezed by the guide wheel 16, so that the synchronous belt 13 can be firmly engaged with the synchronous wheel 12; when the sampling tube 5 is lifted and lowered in the inner cavity of the top rod 2 and the drill rod 3, the No. 1 motor 14 drives the bevel gear 15 to rotate, and through the coordinated transmission of the two bevel gears 15, the rotating rod 11 is driven to rotate, and the synchronous wheel 12 is driven to rotate, and through the transmission of the synchronous belt 13, multiple synchronous wheels 12 are driven to rotate, and the No. 1 gear 9 is driven to rotate in the groove of the cylinder 7. The No. 1 gear 9 is engaged with the rack 8, driving the cylinder 7 to be lifted and lowered in the inner cavity of the top rod 2 and the drill rod 3; thereby driving the sampling tube 5 to be lifted and lowered in the inner cavity of the top rod 2 and the drill rod 3.

[0039] like Figure 3 to Figure 4 As shown, the top of the drill rod 3 and the top inner ring of the drill bit 6 are both fixedly connected with a convex ring 17; a plurality of positioning convex plates 18 are fixedly connected around the top of the convex ring 17; the bottom inner ring of the drill rod 3 and the bottom inner ring of the mandrel 2 are both provided with an annular groove 19 matching the convex ring 17; the top of the annular groove 19 is surrounded by a positioning groove 20 matching the positioning convex plate 18;

[0040] During operation, according to the required sampling depth, multiple drill rods 3 need to be fixed in series; the convex ring 17 at the end of one drill rod 3 is engaged with the annular groove 19 at the end of another drill rod 3, and at the same time, the positioning convex plate 18 is inserted into the inside of the positioning groove 20, and the two drill rods 3 are locked and fixed by multiple bolts. At the same time, the rack 8 inside the drill rod 3 is accurately docked; this is conducive to the lifting and lowering of the sampling tube 5, and improves the stability and smoothness of the movement of the sampling tube 5.

[0041] like Figures 1 to 3As shown, a swivel seat 21 is rotatably installed on the top of the support frame 1; a spline groove 22 is provided in the middle of the swivel seat 21; a spline column 23 is slidably installed inside the spline groove 22; a gear ring 24 is fixedly connected to the top outer ring of the swivel seat 21; a No. 2 motor 25 is fixedly connected to one side of the top of the support frame 1; a No. 2 gear 26 is fixedly connected to the output shaft of the No. 2 motor 25; the No. 2 gear 26 is meshed with the gear ring 24; a vertical slide 27 is fixedly connected to one side of the support frame 1; a screw rod 28 is rotatably installed in the middle of the vertical slide 27; a slide plate 29 is slidably installed inside the vertical slide 27; the top surface of the slide plate 29 is fixedly connected to the bottom end of the spline column 23; the screw rod 28 and the slide plate 29 are threaded Cooperation; a No. 3 motor 30 is fixedly connected to the top of the vertical slide 27; the output shaft of the No. 3 motor 30 is fixedly connected to the top of the screw rod 28; the bottom of the spline column 23 is rotatably connected to the slide plate 29, and the bottom of the spline column 23 passes through the slide plate 29; the bottom end of the spline column 23 is bolted to the top of the push rod 2; when working, the No. 2 motor 25 drives the No. 2 gear 26 to rotate, drives the gear ring 24 and the swivel seat 21 to rotate, drives the spline column 23 to rotate, and drives the push rod 2 to rotate; at the same time, the No. 3 motor 30 drives the screw rod 28 to rotate, drives the slide plate 29 to rotate along the vertical slide 27, and drives the spline column 23 and the push rod 2 to rise and fall along the spline groove 22, thereby realizing the rotation and lifting of the drill rod 3 and the drill bit 6.

[0042] like Figure 1 , Figure 2 , Figure 4 and Fig.11 As shown, the outer ring of the drill rod 3 and the outer ring of the drill bit 6 are both fixedly connected with spiral blades 31; when working, the drill rod 3 and the drill bit 6 rotate and descend, and when drilling a sampling hole in the soil, the spiral blades 31 are driven to transport the soil in the sampling hole upward out of the sampling hole, thereby reducing the crushed soil in the sampling hole, reducing the influence of the crushed soil on sampling, and then improving the sampling accuracy of the sampling tube 5.

[0043] like Figures 5 to 7As shown, a rotating plate 44 is rotatably mounted on the bottom end of the cylinder 7; fixed inserts 32 are fixedly connected to both sides of the bottom surface of the rotating plate 44; two fixed inserts 32 are respectively located on both sides of the sampling port 4; slots 33 matching the fixed inserts 32 are opened on both sides of the top of the sampling tube 5; a No. 4 motor 45 is fixedly connected to the inner bottom surface of the cylinder 7; the output shaft of the No. 4 motor 45 is fixedly connected to the rotating plate 44; the sampling tube 5 is fixedly mounted to the bottom of the cylinder 7 by the matching and fixing of the slot 33 at the top of the sampling tube 5 and the fixed insert 32 at the bottom of the cylinder 7, so that it is convenient for the staff to replace and install the sampling tube 5 from the sampling port 4; when the sampling tube 5 moves to the bottom of the drill bit 6 for soil sampling, the No. 4 motor 45 drives the rotating plate 44 to rotate, drives the sampling tube 5 to rotate, so that the sampling tube 5 is rotated and inserted into the soil at the bottom of the sampling hole; thereby reducing the resistance encountered by the sampling tube 5 during sampling, and improving the sampling efficiency of the sampling tube 5.

[0044] like Figures 3 to 7 As shown, a plurality of guide bars 34 are fixedly connected around the inner cavities of the push rod 2 and the drill rod 3; a plurality of guide grooves 35 are opened around the outer ring of the cylinder body 7; the guide grooves 35 are slidably matched with the guide bars 34; the sliding stability of the cylinder body 7 is improved by the sliding match between the set guide bars 34 and the guide grooves 35 of the outer ring of the cylinder body 7, and at the same time, the plurality of guide bars 34 are slidably matched with the outer wall of the sampling cylinder 5; thereby effectively improving the stability of the movement of the sampling cylinder 5, and then reducing the possibility of the soil sample column collected inside the sampling cylinder 5 falling.

[0045] like Fig.10 As shown, the inner circle of the sampling barrel 5 is fixedly connected with a plurality of spiral convex strips 36; the bottom of the sampling barrel 5 is fixedly connected with a plurality of inclined convex teeth 46; the inclined convex teeth 46 are provided to improve the effect of the sampling barrel 5 in rotating and cutting the soil, and improve the sampling effect of the sampling barrel 5; when the sampling barrel 5 is rotated to collect soil, the spiral convex strips 36 are provided to form spiral patterns on the outer wall of the soil sample column inside the sampling barrel 5, thereby increasing the friction resistance between the soil sample column inside the sampling barrel 5 and the inner wall of the sampling barrel 5, reducing the possibility of the soil sample column slipping, and improving the integrity of the soil sample column.

[0046] like Fig.10As shown, an air hole 37 is provided at the top of the inner cavity of the sampling tube 5; a transverse hole 38 is provided at the top of the air hole 37; both ends of the transverse hole 38 penetrate the outer wall of the sampling tube 5; a telescopic column 39 is fixedly connected to the middle of the top surface of the air hole 37; a rubber diaphragm 40 is fixedly connected to the bottom of the telescopic column 39; the rubber diaphragm 40 can cover the bottom of the air hole 37; a spring 41 is provided on the outer ring of the telescopic column 39; when working, the sampling tube 5 is inserted into the soil at the bottom of the sampling hole, and when a cylindrical soil sample column is formed inside the sampling tube 5, the soil The air between the top of the soil sample column and the top of the sampling tube 5 is squeezed, and the compressed air pushes the rubber diaphragm 40 inside the air hole 37 upward, causing the telescopic column 39 to shrink in length, the spring 41 to compress, and the air to be discharged through the air hole 37 and the transverse hole 38; thereafter, the spring 41 is reset, pushing the rubber diaphragm 40 to cover and seal the bottom of the air hole 37, so that a sealed environment is formed between the top of the soil sample column and the top of the sampling tube 5, so that the soil sample column is firmly adsorbed inside the sampling tube 5, thereby further reducing the possibility of the soil sample column detaching from the sampling tube 5.

[0047] like Figure 11 to Figure 12 As shown, a plurality of conical plates 42 are hinged around the bottom of the drill bit 6; a torsion spring is provided on the outer ring of the rotating shaft of the conical plate 42; a plurality of the conical plates 42 can form the bottom cone of the drill bit 6; an arc strip 43 is fixedly connected to the top of the inner ring of the conical plate 42; when working, the sampling tube 5 slides downward along the inner cavity of the top rod 2 and the drill rod 3, and after the sampling tube 5 enters the interior of the drill bit 6, the bottom of the sampling tube 5 contacts the arc strip 43, pushing the arc strip 43 and the conical plate 42 to rotate outward and unfold, thereby opening the bottom of the drill bit 6, so that the sampling tube 5 can pass through the drill bit 6 for sampling.

[0048] Working principle: Place the support frame 1 on the soil surface to be sampled, connect and fix the drill rod 3 and the bottom end of the mandrel 2, and install the drill bit 6 to the bottom end of the drill rod 3; the No. 2 motor 25 drives the No. 2 gear 26 to rotate, drives the gear ring 24 and the rotating seat 21 to rotate, drives the spline column 23 to rotate, and drives the mandrel 2 to rotate; at the same time, the No. 3 motor 30 drives the screw rod 28 to rotate, drives the slide plate 29 to rotate along the vertical slide 27, drives the spline column 23 and the mandrel 2 to rise and fall along the spline groove 22, and realizes the rotation and lifting of the drill rod 3 and the drill bit 6;

[0049] The mandrel 2 rotates on the support frame 1 and moves downward at the same time, driving the drill rod 3 and the drill bit 6 to rotate and descend, and drilling a sampling hole in the soil; at the same time, according to the required sampling depth, a new drill rod 3 is installed on the bottom end of the mandrel 2 to increase the depth of the sampling hole; at the same time, the spiral blade 31 is driven to transport the soil in the sampling hole upward out of the sampling hole; when the required depth is reached, the mandrel 2 is lifted to a certain height, driving the drill rod 3 and the drill bit 6 to rise, so that the bottom of the drill bit 6 is separated from the bottom of the sampling hole, so that the bottom of the drill bit 6 can be opened;

[0050] The No. 1 motor 14 drives the bevel gear 15 to rotate, and through the cooperation transmission of the two bevel gears 15, drives the rotating rod 11 to rotate, drives the synchronous wheel 12 to rotate, and drives the multiple synchronous wheels 12 to rotate through the transmission of the synchronous belt 13, drives the No. 1 gear 9 to rotate in the notch of the cylinder 7, and the No. 1 gear 9 is meshed with the rack 8, drives the cylinder 7 to move downward in the inner cavity of the top rod 2 and the drill rod 3, and drives the sampling barrel 5 to slide downward along the inner cavity of the top rod 2 and the drill rod 3. After the sampling barrel 5 enters the interior of the drill bit 6, the bottom of the sampling barrel 5 contacts the arc strip 43, pushing the arc strip 43 and the conical plate 42 to rotate outward and unfold, so as to open the bottom of the drill bit 6;

[0051] The fourth motor 45 drives the rotating plate 44 to rotate, and drives the sampling tube 5 to rotate, so that the sampling tube 5 rotates and is inserted into the soil at the bottom of the sampling hole, and a cylindrical soil sample column is formed inside the sampling tube 5; the air between the top of the soil sample column and the top of the sampling tube 5 is squeezed, and the compressed air pushes the rubber diaphragm 40 inside the air hole 37 upward, so that the telescopic column 39 shrinks in length, the spring 41 is compressed, and the air is discharged through the air hole 37 and the transverse hole 38; then, the spring 41 is reset, pushing the rubber diaphragm 40 to cover and seal the bottom of the air hole 37, so that a sealed environment is formed between the top of the soil sample column and the top of the sampling tube 5, so that the soil sample column is firmly adsorbed inside the sampling tube 5, reducing the situation where the soil sample column is separated from the sampling tube 5;

[0052] Afterwards, the sampling tube 5 is controlled to slide upward along the inner cavity of the top rod 2 and the drill rod 3, and the sampling tube 5 is taken out through the sampling port 4 of the top rod 2 and replaced with a new sampling tube 5; thereby, complete columnar soil samples of different soil layers can be collected, which makes it easier to detect the distribution and diffusion of soil pollution.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A soil pollution monitoring device, characterized in that: The invention comprises a support frame (1); a push rod (2) is arranged on the support frame (1); the push rod (2) can be raised and lowered on the support frame (1); a drill rod (3) is fixedly connected to the bottom end of the push rod (2); a plurality of drill rods (3) can be connected end to end; an inner cavity is provided inside the push rod (2) and inside the drill rod (3); a sampling port (4) is provided on one side of the top of the push rod (2); a sampling barrel (5) is slidably arranged in the inner cavity of the push rod (2) and the drill rod (3); a driving component is arranged on the top of the sampling barrel (5), and the driving component is used to drive the sampling barrel (5) to rise and fall; the sampling barrel (5) can be taken out from the sampling port (4); a drill bit (6) is fixedly connected to the bottom end of the drill rod (3), and the bottom end of the drill bit (6) can be opened and closed.

2. A soil pollution monitoring device according to claim 1, characterized in that: The driving assembly comprises a cylinder (7) arranged at the top of the sampling cylinder (5); the outer wall of the cylinder (7) is slidably matched with the inner cavity of the mandrel (2) and the drill rod (3); the inner cavity of the mandrel (2) and the drill rod (3) is fixedly connected with a rack (8) on one side away from the sampling port (4); a notch is provided on the side of the cylinder (7) close to the rack (8); a pair of first gears (9) are rotatably mounted inside the notch of the cylinder (7); the two first gears (9) are meshed with the rack (8); a U-shaped frame (10) is fixedly connected to the inner bottom surface of the cylinder (7); the U-shaped frame (10) A rotating rod (11) is rotatably mounted in the middle of the U-shaped frame (10); the outer ring of the rotating rod (11) and the outer ring of the rotating shaft of the first gear (9) are both fixedly connected with a synchronous wheel (12); the outer rings of the plurality of synchronous wheels (12) are sleeved with a synchronous belt (13); the inner bottom surface of the cylinder (7) is fixedly connected with a first motor (14); the output shaft of the first motor (14) and the end of the rotating rod (11) are both fixedly connected with a bevel gear (15); the two bevel gears (15) are meshed with each other; a guide wheel (16) is rotatably mounted on the top of the U-shaped frame (10); the outer ring of the guide wheel (16) is slidably matched with the outer ring of the synchronous belt (13).

3. A soil pollution monitoring device according to claim 1, characterized in that: The top of the drill rod (3) and the top inner ring of the drill bit (6) are both fixedly connected with a convex ring (17); a plurality of positioning convex plates (18) are fixedly connected around the top of the convex ring (17); the bottom inner ring of the drill rod (3) and the bottom inner ring of the push rod (2) are both provided with an annular groove (19) matching the convex ring (17); and a positioning groove (20) matching the positioning convex plate (18) is provided around the top of the annular groove (19).

4. A soil pollution monitoring device according to claim 1, characterized in that: A rotating seat (21) is rotatably mounted on the top of the support frame (1); a spline groove (22) is provided in the middle of the rotating seat (21); a spline column (23) is slidably mounted inside the spline groove (22); a gear ring (24) is fixedly connected to the top outer ring of the rotating seat (21); a No. 2 motor (25) is fixedly connected to one side of the top of the support frame (1); a No. 2 gear (26) is fixedly connected to the output shaft of the No. 2 motor (25); the No. 2 gear (26) is meshed with the gear ring (24); a vertical slide (27) is fixedly connected to one side of the support frame (1); the vertical slide A screw rod (28) is rotatably installed in the middle of the vertical slide (27); a slide plate (29) is slidably installed inside the vertical slide (27); the screw rod (28) and the slide plate (29) are threadedly matched; a No. 3 motor (30) is fixedly connected to the top of the vertical slide (27); the output shaft of the No. 3 motor (30) is fixedly connected to the top of the screw rod (28); the bottom of the spline column (23) is rotatably connected to the slide plate (29), and the bottom of the spline column (23) passes through the slide plate (29); the bottom end of the spline column (23) is bolted to the top end of the push rod (2).

5. A soil pollution monitoring device according to claim 1, characterized in that: The outer ring of the drill rod (3) and the outer ring of the drill bit (6) are both fixedly connected with spiral blades (31).

6. A soil pollution monitoring device according to claim 2, characterized in that: A rotating plate (44) is rotatably mounted on the bottom end of the cylinder (7); fixed inserts (32) are fixedly connected to both sides of the bottom surface of the rotating plate (44); the two fixed inserts (32) are respectively located on both sides of the sampling port (4); slots (33) matching the fixed inserts (32) are provided on both sides of the top of the sampling tube (5); a No. 4 motor (45) is fixedly connected to the inner bottom surface of the cylinder (7); and the output shaft of the No. 4 motor (45) is fixedly connected to the rotating plate (44).

7. A soil pollution monitoring device according to claim 2, characterized in that: A plurality of guide strips (34) are fixedly connected around the inner cavities of the push rod (2) and the drill rod (3); a plurality of guide grooves (35) are provided around the outer ring of the cylinder body (7); the guide grooves (35) are slidably matched with the guide strips (34); and the guide strips (34) are slidably matched with the outer wall of the sampling cylinder (5).

8. A soil pollution monitoring device according to claim 1, characterized in that: The inner ring of the sampling tube (5) is fixedly connected with a plurality of spiral convex strips (36); the bottom of the sampling tube (5) is fixedly connected with a plurality of inclined convex teeth (46).

9. A soil pollution monitoring device according to claim 8, characterized in that: An air hole (37) is provided at the top of the inner cavity of the sampling tube (5); a transverse hole (38) is provided at the top of the air hole (37); both ends of the transverse hole (38) pass through the outer wall of the sampling tube (5); a telescopic column (39) is fixedly connected to the middle of the top surface of the air hole (37); a rubber diaphragm (40) is fixedly connected to the bottom of the telescopic column (39); the rubber diaphragm (40) can cover the bottom of the air hole (37); and a spring (41) is provided on the outer ring of the telescopic column (39).

10. A soil pollution monitoring device according to claim 9, characterized in that: A plurality of conical plates (42) are hinged around the bottom of the drill bit (6); a torsion spring is arranged on the outer ring of the rotating shaft of the conical plate (42); the plurality of conical plates (42) can form a bottom cone of the drill bit (6); and an arc strip (43) is fixedly connected to the top of the inner ring of the conical plate (42).

Images