Sampler for environmental geology

Abstract

A sampler for environmental geology relates to the technical field of geological exploration equipment and comprises a support, a ground breaking drill, a drilling power source, a pile frame, an electric capstan, an electromagnetic chuck and an electromagnetic controller, the pile frame is provided with the drilling power source capable of vertically moving along the pile frame, and the drilling power source can drive the ground breaking drill to drill downwards. The soil breaking drill is a hollow pipe with a cutting edge, a sampling drill with threads is detachably arranged in a pipe body of the soil breaking drill, the sampling drill is a downward hollow sharp pipe with an opening, a sample container tightly attached to the inner wall of the sampling drill is arranged in the sampling drill, and the sampling drill is provided with a magnetic adsorption plate. A cable part of the electromagnetic chuck is wound on the electric capstan and is connected with the electromagnetic controller, and the electric capstan can drive the magnetic adsorption head to vertically move into the ground breaking drill to be in contact with the adsorption plate; according to the sampling device, excessive compression of the soil sample can be avoided, the accuracy of the sampling result is ensured, the sampling equipment can continuously and automatically drill and collect the soil sample, and the automation degree is high.

Description

Technical Field

[0001] The invention relates to the technical field of geological prospecting equipment, and in particular to a sampler for environmental geology. Background Art

[0002] The common environmental geological sampling process currently includes the use of hollow drill bits and drill rods to drill and sample the soil. This method mainly involves: after drilling to the sampling depth, a sampling tube is lowered into the hollow part to sample the soil. Compared with the conventional sampling method of a conical thread drill bit, the hollow drill bit sampling can avoid the contact between underground samples and the ground environment as much as possible, reduce the possibility of pollutants in the soil being oxidized by air and deteriorated, effectively improve the accuracy of the sampling results, and make this sampling method widely used.

[0003] However, during the sampling process of this method, the width of the drill rod is relatively limited, and the lowered sampling tube usually needs to directly pressurize the soil sample, and then take it out together after pressing the soil sample into the sampling tube. In this process, it will be difficult to avoid excessive compression of the sample, especially when sampling in areas with low soil moisture content and fine soil particles. The fluidity of particles in such soil layers is often significantly higher than that of soil layers with higher moisture content. After the particles between different soil layers are compressed downward by the sampling tube, they are more likely to mix with each other, causing pollutants in different soil layers to mix, affecting the accuracy of the test results. In addition, the capacity of the sampling tube itself is also limited. For sampling requirements at a greater depth, it is often necessary to lower the sampling tube multiple times for sampling. Such repeated operations make the labor cost high. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a sampler for environmental geology, which can continuously sample soil samples without excessively compressing the soil, thereby ensuring the sampling effect and efficiency.

[0005] In order to solve at least one of the above technical problems, the technical solution provided by the present invention is: A sampler for environmental geology, comprising a support, a soil-breaking drill, a drilling power source, a pile frame, an electric winch, an electromagnetic suction cup, an electromagnetic controller, and a central controller, wherein: The pile frame is vertically arranged on the bracket, and a drilling power source capable of vertically moving along the pile frame is arranged on the pile frame, and a ground-breaking drill with a cutting edge vertically pointing downward is arranged on the drilling power source, and the drilling power source can drive the ground-breaking drill to drill downward; The earth-breaking drill is a hollow tube with a cutting edge at the bottom, the cutting edge points to the inside of the earth-breaking drill, and a sampling drill is detachably coaxially arranged inside the tube body; The sampling drill is a tube body with an opening at the top, a hollow interior and a downward pointed end at the bottom, and a spiral upward sampling thread is arranged on the outer surface thereof, and a sample container is arranged inside the sampling drill; The sample container includes two parts, the lower part of which is the same shape as the sampling drill and can be closely attached to the inner wall of the sampling drill, and the upper part is a horizontally arranged adsorption plate made of magnetic material, which is separated from the lower part and connected to the lower part through multiple groups of vertical support rods; The electric winch and the electromagnetic controller are both arranged on the bracket, the electromagnetic suction cup includes a cable part and a magnetic suction head that provides electromagnetic force, the cable part of the electromagnetic suction cup is wound around the electric winch and connected to the electromagnetic controller, and the electric winch can drive the magnetic suction head to move vertically to the inside of the earth-breaking drill and contact the suction plate; The central controller is arranged on the bracket and is electrically connected with the drilling power source, the pile frame, the electric winch and the electromagnetic controller respectively.

[0006] One embodiment of the present invention is that a sample collector is also provided on the bracket. The sample collector is located between the earth-breaking drill and the electric winch, and includes a supporting part and an electric turntable part. The supporting part is connected to the bracket, and the rotating shaft of the electric turntable part is arranged on the supporting part. The electric turntable part is vertically penetrated by a plurality of groups of collecting tubes with an inner diameter not less than an outer diameter of the sample container around the rotating shaft. The collecting tubes can be rotated to just above the earth-breaking drill, and above each group of collecting tubes there is a corresponding group of magnetic suction rings supported on the sample collector, and at least one group of non-continuous diameter variable structures that can cooperate with the adsorption plate is arranged on the magnetic suction ring, and the through hole in the middle of the magnetic suction ring is larger than the diameter of the magnetic adsorption head; the magnetic suction ring is electrically connected to the electromagnetic controller, and the sample collection is electrically connected to the central controller.

[0007] One implementation mode of the present invention is that the drilling power source is an internal hollow and sealed container, the earth-breaking drill penetrates the upper and lower sides of the drilling power source and is arranged in the drilling power source, and is supported for rotation by bearings, a drill gear is sleeved on a part of the surface of the earth-breaking drill in the drilling power source, a power motor is arranged outside the drilling power source, and the output end of the power motor penetrates into the interior of the drilling power source and is connected to a transmission gear that cooperates with the drill gear.

[0008] An implementation manner of the present invention is that the bottom of the sampling drill is coplanar with the cutting edge.

[0009] An implementation manner of the present invention is that the sampling thread is in contact with the inner wall of the earth-breaking drill.

[0010] An implementation manner of the present invention is that the sampling drill is provided with a fixing head between the sampling threads on the outer surface thereof, and the surface of the earth-breaking drill is provided with a fixing screw which cooperates with the fixing head for fixing.

[0011] An implementation manner of the present invention is that the top opening of the sampling drill is a support opening with at least one discontinuous reduction in diameter.

[0012] Furthermore, when the sample holder is located in the sampling drill, the sample inlet at the top of the lower part of the sample holder is not higher than the support opening.

[0013] Furthermore, the opening edge of the sample holding inlet is inclined obliquely inwards.

[0014] An implementation manner of the present invention is that a concave adsorption groove is provided on the top surface of the adsorption plate, and the adsorption groove can cooperate with the magnetic adsorption head.

[0015] The technical effects of the present invention are: 1. The sampling process of the present invention is mainly carried out in the soil layer, which can avoid exposing the samples to the ground environment as much as possible and reduce the possibility of oxidation and deterioration of the samples.

[0016] 2. The sampling device of the present invention does not need to collect soil samples by applying downward pressure to the sampling tube, thereby avoiding excessive compression of the soil sample during sampling and ensuring the accuracy of the sampling results.

[0017] 3. The sampling equipment in the present invention can continuously and automatically drill and collect soil samples, with a high degree of automation, effectively saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is an overall schematic diagram of the present invention; Figure 2 It is a schematic diagram of the internal structure of the earth-breaking drill in the present invention; Figure 3 is an axonometric schematic diagram of the sampling drill in the present invention; Figure 4 It is an axonometric schematic diagram of the sample holder in the present invention; Figure 5 It is a schematic diagram of the internal structure of the drilling power source in the present invention; Figure 6 It is an axonometric schematic diagram of the electric turntable portion of the sample collector in the present invention; Figure 7 It is a schematic diagram of the internal structure of the sample collector in the present invention; In the figure, 1-bracket, 2-earth-breaking drill, 21-cutting edge, 22-drilling gear, 3-drilling power source, 31-power motor, 32-transmission gear, 33-bearing, 4-pile frame, 5-sample collector, 51-magnetic suction ring, 52-collection tube, 53-support part, 54-electric turntable part, 6-electric winch, 7-electromagnetic suction cup, 71-magnetic adsorption head, 8-sampling drill, 81-sampling thread, 82-fixing head, 83-support port, 84-fixing screw, 9-sample container, 91-sample inlet, 92-adsorption plate, 93-adsorption slot, 10-electromagnetic controller, 11-central controller. DETAILED DESCRIPTION

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

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0022] See also Figure 1 A sampler for environmental geology includes a bracket 1, a ground-breaking drill 2, a drilling power source 3, a pile frame 4, an electric winch 6, an electromagnetic suction cup 7, an electromagnetic controller 10, and a central controller 11, wherein: The pile frame 4 is vertically arranged on the support 1, and a drilling power source 3 capable of vertically moving along the pile frame 4 is arranged. A ground-breaking drill 2 with a cutting edge vertically downward is arranged on the drilling power source 3, and the drilling power source 3 can drive the ground-breaking drill 2 to drill downward. Referring to the prior art in this field, a motor driving structure is arranged on the pile frame 4 to drive the drilling power source 3 to move in the vertical direction, and the torsional drive required for the ground-breaking drill 2 to drill is provided by the drilling power source 3. Under the coordinated action of the drilling power source 3 and the pile frame 4, the ground-breaking drill 2 can achieve uniform speed drilling toward the soil layer. In this embodiment, Figure 5As shown, the drilling power source 3 is an internal hollow sealed container, the earth-breaking drill 2 passes through the upper and lower sides of the drilling power source 3 and is arranged in the drilling power source 3, and is rotatably supported by a bearing 33. A drill gear 22 is sleeved on a part of the surface of the earth-breaking drill 2 in the drilling power source 3, and a power motor 31 is arranged on the outside of the drilling power source 3. The output end of the power motor 31 penetrates into the interior of the drilling power source 3 and is connected with a transmission gear 32 to cooperate with the drill gear 22, so that the top of the earth-breaking drill 2 is exposed at the top of the drilling power source 3, and the power motor 31 can also provide the torsional force required for drilling.

[0023] In addition, the structure and method of the drilling power source 3 and the pile frame 4 driving the earth-breaking drill 2 can also refer to the contents disclosed in Chinese patent CN214463873U. The difference between the present invention and the reference patent can be summarized as the top of the earth-breaking drill 2 passes through the drilling power source 3 on the basis of the structure shown in the reference patent.

[0024] See also Figure 2 The earth-breaking drill 2 is a hollow tube with a cutting edge 21 at the bottom. Referring to the conventional design of similar drilling tools in the prior art, the cutting edge 21 points to the inside of the earth-breaking drill 2, so that soil is accumulated in the hollow part of the earth-breaking drill 2 during drilling. A sampling drill 8 is detachably coaxially arranged inside the tube body of the earth-breaking drill 2, so that the sampling drill 8 can be taken out of the earth-breaking drill 2. The earth-breaking drill 2 after being taken out can be directly used for conventional drilling and sampling tube sampling the same as in the field, thereby expanding the application scope of the earth-breaking drill 2. In this embodiment, the sampling drill 8 is provided with a fixing head 82 between the sampling threads 81 on its outer surface, and a fixing screw 84 is provided on the surface of the earth-breaking drill 2 to cooperate with the fixing head 82 for fixing. Obviously, the width of the fixing head 82 should be smaller than the tooth pitch of the sampling threads 81. The sampling drill 8 is a tube with an open top, a hollow interior and a downward pointed bottom. A spiral upward sampling thread 81 is provided on its outer surface. The bottom of the sampling drill 8 is in the same horizontal plane as the cutting edge 21, so as to ensure that the drilling inside and outside the earth-breaking drill 2 can be synchronized. The sampling drill 8 is detachably fixed inside the earth-breaking drill 2. When the earth-breaking drill 2 drills, the sampling drill 8 will also drill together. The soil accumulated in the hollow part will be drilled and transported by the sampling drill 8 together with the soil in the hollow part, and transported to the top of the sampling drill 8 along the sampling thread 81. In this embodiment, the sampling thread 81 contacts the inner wall of the earth-breaking drill 2, so that the space between the sampling drill 8 and the earth-breaking drill 2 is maintained at a low level to avoid soil residue here as much as possible.

[0025] See also Figure 2 , Figure 4 The sampling drill 8 is provided with a sample container 9, which includes an upper and a lower part. Figure 3The sampling drill 8 shown has the same shape and can be tightly attached to the inner wall of the sampling drill 8. The upper part is a horizontally arranged adsorption plate 92 made of magnetic material. The adsorption plate 92 is separated from the lower part and connected to the lower part through multiple groups of vertical support rods. The sample container 9 is arranged in the same shape in the sampling drill 8. Its essence can be regarded as a hollow cone with the top opening pointed toward the top. During the drilling process, the sample container 9 will rotate along the sampling drill 8. After the sample soil produced by drilling is transported to the top of the sampling drill 8 along the sampling thread 81, it will fall into the sample container 9 until the sample container 9 is completely filled. At this time, the sample container 9 can be sucked out of the earth-breaking drill 2 by the electromagnetic suction cup 7 adsorbed on the adsorption plate 92.

[0026] In this embodiment, the top opening of the sampling drill 8 is a support opening 83 with at least one discontinuous reduction. Since the sample holder 9 has the same shape as the sample holder 9, the sample holder 9 can be placed at the discontinuous reduction of the sampling drill 8, thereby being stably fixed inside the sampling drill 8. When the sample holder 9 is located in the sampling drill 8, the sample inlet 91 at the top of the lower part of the sample holder 9 is not higher than the support opening 83, so as to avoid the sample holder 9 being too high to hinder the soil from entering the sample holder 9. At the same time, the opening edge of the sample inlet 91 is inclined inwardly, which is conducive to the soil reaching the top of the sampling drill 8 falling into the sample holder 9.

[0027] See also Figure 1 The electric winch 6 and the electromagnetic controller 10 are both arranged on the bracket 1. The electromagnetic suction cup 7 includes a cable part and a magnetic adsorption head 71 that provides electromagnetic force. The cable part of the electromagnetic suction cup 7 is wound around the electric winch 6 and connected to the electromagnetic controller 10. Since the top of the earth-breaking drill 2 is exposed at the top of the drilling power source 3, the electric winch 6 can drive the magnetic adsorption head 71 to move vertically to the inside of the earth-breaking drill 2 and contact the adsorption plate 92, wherein an inwardly concave adsorption groove 93 is arranged on the top surface of the adsorption plate 92, and the adsorption groove 93 can cooperate with the magnetic adsorption head 71. The electromagnetic controller 10 can provide the electromagnetic suction cup 7 with the current required to generate a magnetic field, thereby generating a magnetic attraction force, and lifting the sample container 9 out of the earth-breaking drill 2, thereby realizing the collection of samples without excessively squeezing the samples.

[0028] The central controller 11 is arranged on the bracket 1, and is electrically connected to the drilling power source 3, the pile frame 4, the electric winch 6, and the electromagnetic controller 10 respectively, that is, all the equipment in the whole device that needs electric control can be integrated and controlled by the central controller 11, thereby realizing the automatic operation of the device.

[0029] See also Figure 6 , Figure 7In some embodiments, a sample collector 5 is further provided on the bracket 1. The sample collector 5 is located between the earth-breaking drill 2 and the electric winch 6. The sample collector 5 includes a support portion 53 and an electric turntable portion 54. The support portion 53 is connected to the bracket 1. The rotating shaft of the electric turntable portion 54 is arranged on the support portion 53. The electric turntable portion 54 is vertically penetrated around the rotating shaft and has multiple groups of collecting tubes 52 with an inner diameter not less than the outer diameter of the sample container 9. The collecting tubes 52 can be rotated to the top of the earth-breaking drill 2. Above each group of collecting tubes 52, there is a corresponding group of magnetic suction rings 51 supported and arranged on the sample collector 5. The magnetic suction rings 51 are provided with at least one group of discontinuous diameter-changing structures that can cooperate with the adsorption plate 92. The through hole in the middle of the magnetic suction ring 51 is larger than the diameter of the magnetic adsorption head 71. The magnetic suction ring 51 is electrically connected to the electromagnetic controller 10, and the sample collector 5 is electrically connected to the central controller 11. Figure 1 As shown, the electromagnetic suction cup 7 can pass through the through hole of the magnetic suction ring 51 and the collecting tube 52 to extend into the earth-breaking drill 2 and contact the adsorption plate 92. As long as the electric turntable part 54 is controlled to rotate the collecting tube 52 to the top of the earth-breaking drill 2 and align it with the sample holder 9, the sample holder 9 can be sucked into the collecting tube 52 by the electromagnetic suction cup 7, and the adsorption plate 92 can be matched with the magnetic suction ring 51. At this time, the magnetic ring 51 applies a magnetic field, and the electromagnetic suction cup 7 releases the magnetic field, so that the sample holder 9 containing the soil sample can be adsorbed on the magnetic suction ring 51, thereby realizing the transfer of the sample to the sample collector 5. If an empty sample holder 9 is adsorbed on the magnetic suction ring 51 in advance and the electric turntable part 54 is rotated, the empty sample holder 9 can be sent to the sampling drill 8 by the magnetic suction head 71 in the opposite process to realize its arrangement. Repeating the two sets of processes here can realize automated sampling and sample layout.

[0030] In summary, the use of the present invention is: according to Figure 1 The structure shown arranges equipment in the sampling area, and the central controller 11 controls the soil-breaking drill 2 with the sampling drill 8 and the sample container 9 to drill the soil. The soil in the drilling process will be concentrated in the middle of the soil-breaking drill 2, and will be transported to the top of the sampling drill 8 by the sampling thread 81 on the sampling drill 8, and then fall into the sample container 9 for collection. The drilling will be stopped after drilling to a certain depth. The depth should be the depth at which the sample container 9 is basically filled with soil samples. The relationship between the drilling depth and the amount of soil filled in the sample container 9 can be obtained by experiments, and then based on the existing technology in the field, it is input into the central controller 11 and the drilling process is controlled by an algorithm; Then, the central controller 11 controls the sample collector 5 to rotate the empty magnetic attraction ring 51 to face the sampling drill 8 in the earth-breaking drill 2, and then the electric winch 6 releases the line, and places the magnetic attraction head 71 to cooperate with the adsorption groove 93 on the top of the sample container 9. At this time, the electromagnetic controller 10 controls the magnetic attraction head 71 to generate magnetic attraction, and the electric winch 6 takes up the line, so as to pull the sample container 9 containing the soil sample into the collection tube 52, and make the adsorption plate 92 cooperate with the empty magnetic attraction ring 51. Then, the electromagnetic controller 10 controls the magnetic attraction ring 51 here to generate attraction, and controls the magnetic attraction head 71 to release the attraction, that is, the sample container 9 containing the soil sample is adsorbed on the magnetic attraction ring 51; After the magnetic adsorption head 71 is pulled away from the sample collector 5 by the electric winch 6, the sample collector 5 can rotate under the control of the central controller 11, and another set of magnetic adsorption rings 51 with empty sample containers 9 adsorbed in advance are rotated to the top of the sampling drill 8 in the earth-breaking drill 2, and the magnetic adsorption head 71 is used to deliver the empty sample container 9 to the sampling drill 8 by the opposite operation of extracting the sample. After the magnetic adsorption head 71 is retracted by the electric winch 6, a round of sampling and sample distribution is completed; On this basis, the earth-breaking drill 2 is restarted to drill the soil, and the above-mentioned sampling and sample distribution operations are repeated until the sampling range requirements are met, thereby realizing automatic sampling of the soil.

[0031] It can be seen that in the sampling process of the present invention, the extraction of samples is carried out in the soil by the sampling drill 8 and the sample container 9, which can avoid exposing the samples to the ground environment as much as possible. At the same time, the sampling device collects samples by transporting the drilled soil samples to the sample container 9, thereby avoiding excessive compression of the soil samples during sampling. The aforementioned continuous automatic drilling and sampling processes of the sampling equipment can be programmed and implemented in the central controller 11, which proves that the present invention has a high degree of automation and effectively saves labor costs while ensuring the accuracy of the sampling results.

[0032] In the description of the present invention, it should be pointed out that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and should not be understood as a limitation on the present invention.

[0033] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the embodiments of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A sampler for environmental geology, characterized in that: It comprises a bracket (1), a ground-breaking drill (2), a drilling power source (3), a pile frame (4), an electric winch (6), an electromagnetic suction cup (7), an electromagnetic controller (10), and a central controller (11), wherein: The pile frame (4) is vertically arranged on the support (1), and a drilling power source (3) capable of vertically moving along the pile frame (4) is arranged on the pile frame (4). A soil-breaking drill (2) with a cutting edge facing vertically downward is arranged on the drilling power source (3), and the drilling power source (3) can drive the soil-breaking drill (2) to drill downward; The earth-breaking drill (2) is a hollow tube with a cutting edge (21) at the bottom, the cutting edge (21) points to the inside of the earth-breaking drill (2), and a sampling drill (8) is detachably coaxially arranged inside the tube body; The sampling drill (8) is a tube body with an open top, a hollow interior and a downward pointed tip at the bottom, and a spiral upward sampling thread (81) is provided on the outer surface thereof. A sample container (9) is provided inside the sampling drill (8); The sample container (9) comprises an upper and lower part, wherein the lower part has the same shape as the sampling drill (8) and can be closely attached to the inner wall of the sampling drill (8), and the upper part is a horizontally arranged adsorption plate (92) made of a magnetic material, the adsorption plate (92) is separated from the lower part and connected to the lower part via a plurality of groups of vertical support rods; The electric winch (6) and the electromagnetic controller (10) are both arranged on the bracket (1); the electromagnetic suction cup (7) comprises a cable portion and a magnetic suction head (71) for providing electromagnetic force; the cable portion of the electromagnetic suction cup (7) is wound around the electric winch (6) and connected to the electromagnetic controller (10); and the electric winch (6) can drive the magnetic suction head (71) to move vertically into the interior of the earth-breaking drill (2) and contact the suction plate (92); The central controller (11) is arranged on the bracket (1), and is electrically connected to the drilling power source (3), the pile frame (4), the electric winch (6), and the electromagnetic controller (10) respectively.

2. The environmental geology sampler according to claim 1, characterized in that: The support (1) is also provided with a sample collector (5), which is located between the earth-breaking drill (2) and the electric winch (6), and comprises a support portion (53) and an electric turntable portion (54), wherein the support portion (53) is connected to the support (1), and a rotating shaft of the electric turntable portion (54) is arranged on the support portion (53), and the electric turntable portion (54) is vertically penetrated around the rotating shaft and provided with a plurality of collection tubes (52) whose inner diameter is not less than the outer diameter of the sample container (9), and the collection tubes (53) are connected to the earth-breaking drill (2) and the electric winch (6), and the sample collector (55) is provided with a plurality of collection tubes (52) whose inner diameter is not less than the outer diameter of the sample container (9). 2) capable of rotating to the top of the earth-breaking drill (2); each group of collection tubes (52) is provided with a group of magnetic rings (51) supported on the sample collector (5); the magnetic rings (51) are provided with at least one group of discontinuous diameter-changing structures capable of cooperating with the adsorption plate (92); the through hole in the middle of the magnetic rings (51) is larger than the diameter of the magnetic adsorption head (71); the magnetic rings (51) are electrically connected to the electromagnetic controller (10); and the sample collector (5) is electrically connected to the central controller (11).

3. The environmental geological sampler according to claim 1, characterized in that: The drilling power source (3) is an internal hollow sealed container. The earth-breaking drill (2) penetrates the upper and lower sides of the drilling power source (3) and is arranged in the drilling power source (3). The earth-breaking drill (2) is rotatably supported by a bearing (33). A drill gear (22) is sleeved on a part of the surface of the earth-breaking drill (2) in the drilling power source (3). A power motor (31) is arranged outside the drilling power source (3). The output end of the power motor (31) penetrates into the interior of the drilling power source (3) and is connected to a transmission gear (32) that cooperates with the drill gear (22).

4. The environmental geological sampler according to claim 1, characterized in that: The bottom of the sampling drill (8) is coplanar with the cutting edge (21).

5. The environmental geological sampler according to claim 1, characterized in that: The sampling thread (81) contacts the inner wall of the earth-breaking drill (2).

6. The environmental geological sampler according to claim 1, characterized in that: The sampling drill (8) is provided with a fixing head (82) between the sampling threads (81) on its outer surface, and the surface of the earth-breaking drill (2) is provided with a fixing screw (84) which cooperates with the fixing head (82) to fix.

7. The environmental geological sampler according to claim 1, characterized in that: The top opening of the sampling drill (8) is a support opening (83) having at least one discontinuous reduced diameter portion.

8. The environmental geological sampler according to claim 7, characterized in that: When the sample container (9) is located in the sampling drill (8), the sample inlet (91) at the top of the lower part of the sample container (9) is not higher than the support opening (83).

9. The environmental geological sampler according to claim 8, characterized in that: The opening edge of the sample holding inlet (91) is inclined obliquely inwards.

10. The environmental geological sampler according to claim 1, characterized in that: The top surface of the adsorption plate (92) is provided with an inwardly concave adsorption groove (93), and the adsorption groove (93) can cooperate with the magnetic adsorption head (71).

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