A geological soil sampling and testing device for mineral exploration

Abstract

The present invention relates to the technical field of soil sampling and detection, and particularly relates to a geological soil sampling and detection device for mineral exploration, which includes a conveying mechanism, an isolation cylinder, a compaction mechanism and a sampling mechanism; the conveying mechanism is connected to the drill bit; the isolation cylinder is arranged on the outer circle of the drill bit; the compaction mechanism is arranged on the inner wall of the isolation cylinder; the sampling mechanism is rotatably installed on the outer wall of the isolation cylinder; by conveying the soil drilled by the drill bit into the interior of the isolation cylinder, air pressure is applied to the upper part of the inner circle of the isolation cylinder by pressing the soil into the waste cavity during the conveying process, so that the soil drilled by the drill bit moves upward to the interior of the isolation cylinder to prevent the drilled soil from reaching the outside of the isolation cylinder. The isolation cylinder will compact the hole wall, and after compaction, the sampling mechanism samples the soil on the hole wall to avoid the loosening and mixing of the soil during the soil sampling process; it solves the problem that when conducting mineral exploration, for relatively hard soil, a drill bit is required for drilling treatment, resulting in the mixing of soils at different depths.

Description

Technical Field

[0001] The present invention relates to the technical field of soil sampling and detection, and particularly to a geological soil sampling and detection device for mineral exploration. Background Art

[0002] Soil sampling and detection equipment is an important device used in fields such as mineral exploration, agriculture, and engineering construction. Currently, soil sampling is mainly divided into manual sampling and mechanical sampling. For shallow or relatively soft soil, a screw drill, hollow tube drill, shovel, etc. are usually used for sampling. For deep soil or mineral exploration, a hydraulic or pneumatic sampler is usually used for sampling.

[0003] When used for mineral exploration, it is usually necessary to sample deep soil and analyze the mineral distribution in the soil profile. For hard soil, an electric drill is usually used for sampling. However, during the drilling process of the drill bit, the collected soil will be mixed, causing the soil at different depth positions to be mixed, so that the mineral distribution in the soil at different depths cannot be accurately detected and analyzed. The prior art has proposed good solutions to this problem. For example, a sampling device for geological and mineral exploration with the patent publication number CN115791269B; through the design of an arc-shaped sampling plate and a guiding groove, after the drill bit drills to the required depth, sampling is carried out on the hole wall of the drilled hole. When sampling, the arc-shaped sampling plate extends out to scrape the soil on the hole wall, and the soil is pushed into the sampling bin through the soil scraping mechanism. Through the cooperation of the arc-shaped sampling bin and the soil scraping mechanism, the damage to the soil structure is reduced, and the soil at different depths is collected in layers. Finally, the sampling bin filled with samples is automatically removed from the rotating cylinder by the material taking mechanism for immediate detection, improving the efficiency.

[0004] Although the prior art has solved the problem that the soil at different depth positions will be mixed during the drilling process of the drill bit, there are still the following problems: When sampling the hole wall formed during the drilling process of the drill bit, since part of the upper soil will be driven to the lower layer during the drilling process of the drill bit, and at the same time, the lower soil will be pushed upward, when the hole wall is formed, the soil brought down from the upper layer by the drill bit will be distributed on the hole walls at different heights due to the vibration and extrusion generated during the drilling process, and the soil pushed from the lower layer to the upper layer will also be pressed on the hole walls at different heights, resulting in still some deviation in the sampling results when sampling the hole wall.

[0005] In view of the above situation, in order to overcome the above technical problems, the present invention designs a geological soil sampling and detection device for mineral exploration. Summary of the Invention

[0006] The present invention provides a geological soil sampling and testing device for mineral exploration, which solves the problem that when exploring minerals, for relatively hard soil, a drill bit is required to drill holes, resulting in the mixing of soils at different depths. By setting an isolation cylinder and a conveying mechanism, the soil drilled by the drill bit is conveyed into the isolation cylinder, and during the conveying process, the soil is pressed into the waste cavity to apply air pressure above the inner circle of the isolation cylinder, so that the soil drilled by the drill bit moves upward inside the isolation cylinder to prevent the drilled soil from reaching the outside of the isolation cylinder. Moreover, the isolation cylinder will compact the hole wall under the compaction effect generated by the drilling vibration force and the eccentric pressure of the counterweight ball. After compaction, the sampling mechanism samples the soil on the hole wall to avoid loosening and mixing during the soil sampling process, thereby improving the accuracy of the sampling result detection.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A geological soil sampling and testing device for mineral exploration, including a support frame and a drill bit, further including a conveying mechanism, an isolation cylinder, a compaction mechanism and a sampling mechanism; the conveying mechanism is connected to the drill bit; the isolation cylinder is arranged on the outer circle of the drill bit, and when the conveying mechanism rotates, it drives the drill bit to rotate to convey the soil from the lower part of the inner circle of the isolation cylinder to the upper position; the compaction mechanism is arranged on the inner wall of the isolation cylinder. During the upward movement of the soil under the action of the conveying mechanism, the gas in the isolation cylinder is squeezed upward and then forms a swirl, and together with the vibration force generated by drilling the soil, the isolation cylinder squeezes the soil at its outer wall. The gas forming the swirl in the compaction mechanism is discharged from the lower part of the isolation cylinder in an obliquely upward direction to push the soil upward above the center of the isolation cylinder; the sampling mechanism is rotatably installed on the outer wall of the isolation cylinder, and when the sampling mechanism rotates, it digs the soil at the outer wall position of the isolation cylinder into the inner wall of the isolation cylinder.

[0009] Preferably, the surface of the drill bit is provided with guiding threads; the conveying mechanism includes a driving motor, a guiding screw, a connecting bearing and a waste cavity; the driving motor is connected to the support frame; the guiding screw is connected to the driving motor; the connecting bearing is connected between the guiding screw and the isolation cylinder; the waste cavity is opened in the isolation cylinder.

[0010] In the above solution, the soil drilled by the drill bit and the guiding screw is lifted through the threads on its surface during the rotation movement into the soil, and these drilled soils are conveyed into the waste cavity, so as to prevent these wastes from being mixed and compacted onto the hole wall to be sampled during the discharge process. The guiding screw and the isolation cylinder are connected by a connecting bearing, so that the guiding screw and the isolation cylinder can perform synchronous axial movement, and while performing axial movement, the guiding screw can drive the drill bit to perform normal rotational movement.

[0011] Preferably, the material guiding screw includes a driving rod and a sliding rod; the driving rod is connected to the driving motor, and driving sliding teeth are arranged on the outer wall of the driving rod; the sliding rod is sleeved outside the driving rod, and sliding tooth grooves meshing with the driving sliding teeth are formed on the inner wall of the sliding rod, and conveying threads are arranged on the outer wall of the sliding rod, and the sliding rod is rotationally installed in the isolation cylinder through a connecting bearing; a pressing spring is connected between the isolation cylinder and the support frame.

[0012] In the above solution, through the cooperation between the driving sliding teeth and the sliding tooth grooves, the rotational force of the driving rod can be transmitted to the sliding rod, so that the sliding rod can smoothly drive the drill bit to rotate. At the same time, the driving sliding teeth and the sliding tooth grooves can perform axial relative sliding. Under the downward pressure of the pressing spring, the isolation cylinder will move downward, and at this time, the sliding rod will be driven to move downward together. During the movement, through the meshing of the driving sliding teeth and the sliding tooth grooves, it can be ensured that the sliding rod continuously drives the drill bit to rotate and drill.

[0013] Preferably, a downward pressing shovel surface is arranged below the isolation cylinder, and the plane where the bottom of the isolation cylinder is located is lower than the plane where the bottom of the drill bit is located.

[0014] In the above solution, the isolation cylinder can isolate the formed hole wall and the soil discharged outward during the drilling process, so as to avoid the soil discharged by drilling sticking to the hole wall that needs to be sampled. And during the drilling process, the isolation cylinder will highly compress the hole wall formed at its outer wall position with the vibration generated by the drill bit, making the hole wall firmer, thus avoiding the problem of hole collapse. After compacting the soil, it is convenient for subsequent sampling, avoiding the soil being too loose during the sampling process, resulting in the soil collapsing and mixing the soil at different heights. The downward pressing shovel surface below the isolation cylinder can be more easily embedded into the soil, so that it is easier to press downward during the drilling process. And the lower end of the isolation cylinder exceeding the drill bit can ensure that the place where the hole needs to be formed at the position drilled by the drill bit is isolated first during the soil drilling process, thereby ensuring that the drill bit will not mix the soil brought from above into the side wall position during the drilling process.

[0015] Preferably, the compaction mechanism includes a swirl groove opening, a deflection groove, an air curtain groove and a counterweight ball; the swirl groove opening is formed at the top of the waste cavity; the deflection groove is formed on the outer ring of the swirl groove opening; the air curtain groove is formed at the lower part of the deflection groove, and the bottom section of the air curtain groove is a hook-shaped structure facing upward; the counterweight ball is rotationally installed in the deflection groove.

[0016] In the above solution, when the soil is conveyed to the waste cavity by the soil conveying mechanism, since the soil will gradually accumulate on the conveying thread on the outer wall of the sliding rod to form a sealing effect, the air in the waste cavity will be squeezed at this time, so that the air forms a swirling flow and is discharged to the deflection groove from the swirling groove opening. The counterweight ball in the deflection groove will further improve the compaction effect of the isolation cylinder on the hole wall under the action of the vibration force and the swirling air thrust; the gas entering the air curtain groove through the deflection groove will change the outflow direction under the hook-shaped structure at its bottom, thereby forming an obliquely rising air flow to push the soil drilled by the drill bit to move upward, preventing the drilled soil from reaching outside the isolation cylinder.

[0017] Preferably, the sampling mechanism includes a sampling rotating groove, a sampling arc shovel and an isolation sealing plate; the sampling rotating groove is opened on the side wall of the isolation cylinder; the sampling arc shovel is rotatably installed in the sampling rotating groove; the isolation sealing plate is rotatably connected to the sampling arc shovel, and the outer wall curvature radius of the isolation sealing plate is equal to the radius of the isolation cylinder.

[0018] In the above solution, when drilling to a depth where sampling can be carried out, rotate the sampling arc shovel. The sampling arc shovel rotates out from the side wall of the isolation cylinder to sample the soil on the hole wall. After rotating 180 degrees, the soil that has not been mixed at the position of the outer wall of the isolation cylinder will be dug into the space between the sampling arc shovel and the isolation sealing plate.

[0019] Preferably, the isolation sealing plate includes a plate body, a rotating shaft and a torsion spring; the plate body is rotatably inserted at the opening position of the sampling arc shovel; the rotating shaft is connected between the plate body and the sampling rotating groove, and an adsorption iron block is arranged at the upper part of the rotating shaft; the torsion spring is connected between the rotating shaft and the sampling rotating groove; an adsorption magnet is arranged at the upper end of the sampling arc shovel.

[0020] In the above solution, when the sampling arc shovel rotates out from the sampling rotating groove, due to the restriction of the torsion spring, the isolation sealing plate will not rotate, and the sampling arc shovel will shovel the soil at the hole wall position. When it rotates to the position where the sampling arc shovel and the isolation sealing plate form a closed state again, the sampling process will be completed. And during the shoveling process, since the soil has been compacted during the previous drilling process, it can be ensured that under the support of the outer wall of the isolation cylinder, the hole wall will not collapse due to shoveling. And since the sampling arc shovel rotates on a fixed horizontal plane, the shoveling process will not cause mixing between soils at different depths; after sampling, the adsorption iron block and the adsorption magnet will generate an adsorption effect, so that the sampling arc shovel and the isolation sealing plate will maintain the same rotation action. At this time, when the sampling arc shovel is rotated back into the sampling rotating groove, the isolation sealing plate will rotate together. At this time, the isolation sealing plate and the sampling arc shovel will tightly hold the sampled soil and place the soil inside the inner wall of the isolation cylinder, and it will not be affected during the subsequent drill lifting process, thus ensuring that the soils at different depth positions of the sampled soil will not be mixed.

[0021] Preferably, the adsorption iron block and the adsorption magnet block are arranged at an interval of 180 degrees, and the adsorption force between the adsorption iron block and the adsorption magnet block is greater than the torsion force of the torsion spring.

[0022] In the above solution, the adsorption iron block and the adsorption magnet block are arranged at an interval of 180 degrees, which can ensure that after the sampling arc shovel rotates to form a closed space with the isolation sealing plate during the sampling process, the adsorption between the adsorption iron block and the adsorption magnet block will occur, avoiding the situation that the sampling space is not in a fully closed and compacted state, resulting in the loosening or exposure of the sampled soil during the subsequent process of lifting the drill, and thus causing the mixing of the soil at different depth positions of the sampled soil.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. Compared with the existing soil sampling equipment for mineral exploration, the present invention is provided with an isolation cylinder outside the drill bit and a conveying mechanism. During the drilling process, the soil will be conveyed into the waste cavity in the isolation cylinder, thereby avoiding the problem of soil mixing at different depth positions of the sampled soil caused by the soil drilled during the drilling process reaching the outer wall of the isolation cylinder. And the isolation cylinder will compact the formed hole wall under the drilling vibration during the drilling process, so that the subsequent soil sampling process will not collapse, and further ensure that the soil at different depth positions of the sampled soil will not be mixed, making the subsequent detection results more accurate and reliable.

[0025] 2. The present invention is provided with a compaction mechanism. When the conveying mechanism conveys the soil into the waste cavity, the soil will gradually accumulate and form a sealing effect, so that the air in the waste cavity is squeezed. When passing through the swirl groove opening, the air flow will form a swirl, and at this time, the counterweight ball will rotate in the isolation cylinder. Combining with the vibration force during drilling will further strengthen the compaction effect of the isolation cylinder on the hole wall. And after the air flow swirls downward and is ejected through the hook-shaped structure of the air curtain groove, it will blow the soil drilled by the drill bit towards the waste cavity position, thereby avoiding the drilled soil from reaching outside the isolation cylinder, and further ensuring that the soil at different depth positions of the soil sampled at the hole wall position will not be mixed.

[0026] 3. The present invention is provided with a sampling mechanism to sample on the hole wall compacted by the isolation cylinder. Since the soil at different depth positions at the hole wall position is not mixed, the detection result after sampling will be more accurate. And the sampling arc shovel rotates on a fixed horizontal plane, so the shoveling process will not cause mixing between the soils at different depths. After sampling, the isolation sealing plate and the sampling arc shovel will keep the sampled soil tightly pressed and place the soil on the inner wall of the isolation cylinder, and it will not be affected during the subsequent process of lifting the drill, thus ensuring that the soil at different depth positions of the sampled soil will not be mixed. Description of the Drawings

[0027] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 It is the overall structure diagram of the present invention;

[0029] Figure 2 It is the schematic diagram of the internal structure of the present invention;

[0030] Figure 3 It is the sectional view of the isolation cylinder of the present invention;

[0031] Figure 4 It is Figure 3 the enlarged view of the structure at position A in

[0032] Figure 5 It is Figure 3 the enlarged view of the structure at position B in

[0033] Figure 6 It is the overall sectional view of the present invention;

[0034] Figure 7 It is Figure 6 the enlarged view of the structure at position C in

[0035] Figure 8 It is the schematic diagram of the sampling mechanism structure of the present invention;

[0036] Figure 9 It is the sectional view of the sampling mechanism of the present invention;

[0037] Figure 10 It is the schematic diagram of the sampling arc shovel in the rotated-out state of the present invention;

[0038] In the figure: 1. Support frame; 2. Drill bit; 21. Feeding thread; 3. Conveying mechanism; 31. Driving motor; 32. Feeding screw; 321. Driving rod; 3211. Driving sliding tooth; 322. Sliding rod; 3221. Sliding tooth groove; 3222. Conveying thread; 33. Connecting bearing; 34. Waste cavity; 4. Isolation cylinder; 41. Pressing spring; 42. Pressing shovel surface; 5. Compacting mechanism; 51. Swirl groove opening; 52. Deflection groove; 53. Air curtain groove; 54. Counterweight ball; 6. Sampling mechanism; 61. Sampling rotating groove; 62. Sampling arc shovel; 621. Adsorption magnet; 63. Isolation sealing plate; 631. Plate body; 632. Rotating shaft; 6321. Adsorption iron block; 633. Torsion spring. Specific Embodiments

[0039] To better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings of the specification and specific implementation manners.

[0040] Please refer to Figures 1 to 8 , the present invention provides a geological soil sampling and testing device for mineral exploration, and the technical solution is as follows:

[0041] As a specific implementation manner of the present invention, referring to Figure 1 , Figure 2 and Figure 3 , a geological soil sampling and testing device for mineral exploration includes a support frame 1 and a drill bit 2, and also includes a conveying mechanism 3, an isolation cylinder 4, a compaction mechanism 5 and a sampling mechanism 6; the conveying mechanism 3 is connected to the drill bit 2; the isolation cylinder 4 is arranged on the outer circle of the drill bit 2, and when the conveying mechanism 3 rotates, it drives the drill bit 2 to rotate to convey the soil from the lower part of the inner circle of the isolation cylinder 4 to the upper position; the compaction mechanism 5 is arranged on the inner wall of the isolation cylinder 4, and when the soil moves upward under the action of the conveying mechanism 3, the gas in the isolation cylinder 4 is squeezed upward and then forms a swirling flow, and the swirling flow cooperates with the soil drilling to generate a vibration force, so that the isolation cylinder 4 squeezes the soil at its outer wall, and the gas forming the swirling flow in the compaction mechanism 5 is discharged from the lower part of the isolation cylinder 4 in an obliquely upward direction to push the soil above the center of the isolation cylinder 4; the sampling mechanism 6 is rotatably installed on the outer wall of the isolation cylinder 4, and when the sampling mechanism 6 rotates, it digs the soil at the outer wall position of the isolation cylinder 4 into the wall of the isolation cylinder 4.

[0042] As a specific implementation manner of the present invention, referring to Figure 1 , Figure 2 and Figure 3 , the surface of the drill bit 2 is provided with a material guiding thread 21; the conveying mechanism 3 includes a driving motor 31, a material guiding screw 32, a connecting bearing 33 and a waste cavity 34; the driving motor 31 is connected to the support frame 1; the material guiding screw 32 is connected to the driving motor 31; the connecting bearing 33 is connected between the material guiding screw 32 and the isolation cylinder 4; the waste cavity 34 is opened in the isolation cylinder 4. The soil drilled by the drill bit 2 and the material guiding screw 32 during the rotation into the soil is lifted through the threads on its surface, and these drilled soils will be conveyed to the waste cavity 34, so as to prevent these wastes from being mixed and compacted onto the hole wall to be sampled during the discharge process. The material guiding screw 32 and the isolation cylinder 4 are connected through the connecting bearing 33, so that the material guiding screw 32 and the isolation cylinder 4 can perform synchronous axial movement, and while performing the axial movement, the material guiding screw 32 can drive the drill bit 2 to perform normal rotational movement.

[0043] As a specific implementation manner of the present invention, referring to Figure 2 , Figure 3 and Figure 4, the material guiding screw 32 includes a driving rod 321 and a sliding rod 322; the driving rod 321 is connected to the driving motor 31, and driving sliding teeth 3211 are arranged on the outer wall of the driving rod 321; the sliding rod 322 is sleeved outside the driving rod 321, and a sliding tooth groove 3221 meshing with the driving sliding teeth 3211 is formed on the inner wall of the sliding rod 322, and a conveying thread 3222 is arranged on the outer wall of the sliding rod 322. The pitch of the conveying thread 3222 can gradually decrease from bottom to top, so as to ensure that the soil can be gradually accumulated during the conveying process, so that the soil can be compacted, the space of the waste cavity 34 can be fully utilized, and at the same time, the sealing performance can be further improved when the soil is compacted, so as to ensure that the compaction mechanism 5 can work smoothly. The sliding rod 322 is rotatably installed in the isolation cylinder 4 through a connecting bearing 33; a downward pressure spring 41 is connected between the isolation cylinder 4 and the support frame 1. During the drilling process, the support frame 1 is pressed against the ground. After the soil is conveyed to the waste cavity 34 through the drilling effect of the drill bit 2, the isolation cylinder 4 can be automatically pressed downward under the downward pressure of the downward pressure spring 41, and the sliding rod 322 can be driven to move downward together during the downward pressing process. Through the cooperation between the driving sliding teeth 3211 and the sliding tooth groove 3221, the rotational force of the driving rod 321 can be transmitted to the sliding rod 322, so that the sliding rod 322 can smoothly drive the drill bit 2 to rotate. At the same time, the driving sliding teeth 3211 and the sliding tooth groove 3221 can perform axial relative sliding. Under the downward pressure of the downward pressure spring 41, the isolation cylinder 4 will move downward. At this time, the sliding rod 322 will be driven to move downward together. During the movement, the meshing effect of the driving sliding teeth 3211 and the sliding tooth groove 3221 can ensure that the sliding rod 322 continuously drives the drill bit 2 to rotate and drill.

[0044] As a specific implementation manner of the present invention, referring to Figure 2 and Figure 3 , a downward pressure shovel surface 42 is arranged below the isolation cylinder 4, and the plane where the bottom of the isolation cylinder 4 is located is lower than the plane where the bottom of the drill bit 2 is located. The isolation cylinder 4 can isolate the formed hole wall and the soil discharged outward during the drilling process, so as to avoid the soil discharged after being drilled from adhering to the hole wall to be sampled. During the drilling process, the isolation cylinder 4 will highly squeeze the hole wall formed at its outer wall position with the vibration generated by the drilling of the drill bit 2, making the hole wall firmer, so as to avoid the problem of hole collapse. After the soil is compacted, it is convenient for subsequent sampling, and it is avoided that the soil is too loose during the sampling process, resulting in the soil collapsing and mixing the soil at different heights. The downward pressure shovel surface 42 below the isolation cylinder 4 can be more easily embedded into the soil, so that it is easier to press downward during the drilling process, and the lower end of the isolation cylinder 4 exceeding the drill bit 2 can ensure that the place where the hole needs to be formed at the position drilled by the drill bit 2 is isolated first during the soil drilling process, so as to ensure that the drill bit 2 will not mix the soil brought from above into the side wall position during the drilling process.

[0045] As a specific embodiment of the present invention, referring to Figure 5 , Figure 6 and Figure 7 , the compaction mechanism 5 includes a swirl slot 51, a deflection slot 52, an air curtain slot 53 and a counterweight ball 54; the swirl slot 51 is opened at the top of the waste chamber 34; the deflection slot 52 is opened on the outer ring of the swirl slot 51; the air curtain slot 53 is opened at the lower part of the deflection slot 52, and the bottom cross-section of the air curtain slot 53 is a hook-shaped structure facing upward; the counterweight ball 54 is rotatably installed in the deflection slot 52. When the soil is conveyed to the waste chamber 34 by the conveying mechanism 3, since the soil will gradually accumulate on the conveying thread 3222 on the outer wall of the sliding rod to form a sealing effect, at this time, the air in the waste chamber 34 will be squeezed, so that the air forms a swirl and is discharged to the deflection slot 52 from the swirl slot 51, and the counterweight ball 54 in the deflection slot 52 will further improve the compaction effect of the isolation cylinder 4 on the hole wall under the action of the vibration force and the swirl air thrust; and the gas entering the air curtain slot 53 through the deflection slot 52 will change the outflow direction under the hook-shaped structure at its bottom, so as to form an obliquely upward air flow, pushing the soil drilled by the drill bit 2 to move upward, preventing the drilled soil from reaching outside the isolation cylinder 4, and a rubber material sealing that allows only one-way opening and closing can be set at the notch position of the air curtain slot 53, so that when the gas does not discharge outward, the soil will not block the notch of the air curtain slot 53, and at the same time, the pressure of the discharged gas can be increased, so that the thrust on the drilled soil can be further increased.

[0046] As a specific embodiment of the present invention, referring to Figure 8 , Figure 9 and Figure 10 , the sampling mechanism 6 includes a sampling rotating slot 61, a sampling arc shovel 62 and an isolation sealing plate 63; the sampling rotating slot 61 is opened on the side wall of the isolation cylinder 4; the sampling arc shovel 62 is rotatably installed in the sampling rotating slot 61; the isolation sealing plate 63 is rotatably connected with the sampling arc shovel 62, and the outer wall curvature radius of the isolation sealing plate 63 is equal to the radius of the isolation cylinder 4. When drilling to a depth where sampling can be carried out, rotate the sampling arc shovel 62, and the sampling arc shovel 62 rotates out from the side wall of the isolation cylinder 4 to sample the soil on the hole wall. After rotating 180 degrees, the soil that has not been mixed at the position of the outer wall of the isolation cylinder 4 will be dug into the space between the sampling arc shovel 62 and the isolation sealing plate 63.

[0047] As a specific embodiment of the present invention, referring to Figure 8 , Figure 9 and Figure 10, the isolation sealing plate 63 includes a plate body 631, a rotating shaft 632 and a torsion spring 633; the plate body 631 is rotatably inserted at the opening position of the sampling arc shovel 62; the rotating shaft 632 is connected between the plate body 631 and the sampling rotating groove 61, and an adsorption iron block 6321 is arranged on the upper part of the rotating shaft 632; the torsion spring 633 is connected between the rotating shaft 632 and the sampling rotating groove 61; an adsorption magnet 621 is arranged at the upper end of the sampling arc shovel 62. When the sampling arc shovel 62 rotates out of the sampling rotating groove 61, due to the limiting effect of the torsion spring 633, the isolation sealing plate 63 will not rotate, and the sampling arc shovel 62 will shovel the soil at the hole wall position. When it rotates to the state where the sampling arc shovel 62 and the isolation sealing plate 63 form a closed state again, the sampling process will be completed. And during shoveling, since the soil has been compacted during the previous drilling process, it can be ensured that under the support of the outer wall of the isolation cylinder 4, the hole wall will not collapse due to shoveling. And since the sampling arc shovel 62 rotates on a fixed horizontal plane, the shoveling process will not cause the soil at different depths to be mixed; after sampling, the adsorption iron block 6321 and the adsorption magnet 621 will generate an adsorption effect, so that the sampling arc shovel 62 and the isolation sealing plate 63 maintain the same rotation action. At this time, when the sampling arc shovel 62 is rotated back into the sampling rotating groove 61 again, the isolation sealing plate 63 will rotate together. At this time, the isolation sealing plate 63 and the sampling arc shovel 62 will firmly hold the sampled soil and place the soil inside the inner wall of the isolation cylinder 4, and it will not be affected during the subsequent process of lifting the drill, so as to ensure that the soil at different depth positions of the sampled soil will not be mixed.

[0048] As a specific implementation manner of the present invention, referring to Figure 8 , Figure 9 and Figure 10 , the adsorption iron block 6321 and the adsorption magnet 621 are arranged at an interval of 180 degrees, and the adsorption force between the adsorption iron block 6321 and the adsorption magnet 621 is greater than the torsion force of the torsion spring 633. The adsorption iron block 6321 and the adsorption magnet 621 are arranged at an interval of 180 degrees, which can ensure that after the sampling arc shovel 62 rotates to form a closed space with the isolation sealing plate 63 during the sampling process, the adsorption between the adsorption iron block 6321 and the adsorption magnet 621 will occur, avoiding the sampling space not being in a fully closed and compact state, resulting in the sampled soil collapsing or being exposed during the subsequent process of lifting the drill, thereby causing the soil at different depth positions of the sampled soil to be mixed.

[0049] Workflow: Fix the support frame 1 on the ground, start the drive motor 31 to drive the drill bit 2 and the material guiding screw 32 to rotate. After the drill bit 2 drills through the soil, the isolation cylinder 4 is under the pressure of the downward pressing spring 41 and drives the drill bit 2 to move downward together. The soil in the isolation cylinder 4 is conveyed to the waste chamber 34 through the material guiding screw 32. The soil entering the waste chamber 34 presses the gas in the waste chamber 34 into the air curtain groove 53, and blows the soil drilled by the drill bit 2 to the material guiding screw 32 through the air curtain groove 53. The isolation cylinder 4 compacts the hole wall position of the drilled hole under the vibration force. When drilling to the set height, rotate the sampling mechanism 6 to store the soil sample into the wall of the isolation cylinder 4.

[0050] Specifically, the support frame 1 is tightly fixed on the ground. At this time, the downward pressure spring 41 will press down the isolation cylinder 4, and the downward pressure shovel surface 42 at the lower end of the isolation cylinder 4 is manually inserted into the soil. The isolation cylinder 4 will drive the drill bit 2 to press down, and the drill bit 2 contacts the ground. Then, the driving motor 31 is started to drive the driving rod 321 to rotate. Through the cooperation between the driving sliding teeth 3211 of the driving rod 321 and the sliding tooth grooves 3221, the rotational force of the driving rod 321 can be transmitted to the sliding rod 322, enabling the sliding rod 322 to smoothly drive the drill bit 2 to rotate. At the same time, the driving sliding teeth 3211 and the sliding tooth grooves 3221 can axially slide relative to each other. Under the downward pressure of the downward pressure spring 41, after the drill bit 2 drills through the soil, the drill bit 2 and the isolation cylinder 4 will move downward together (when the soil is relatively hard, manual downward pressure can be applied in cooperation with the downward pressure spring 41 to ensure the drilling effect). During the movement, through the meshing of the driving sliding teeth 3211 and the sliding tooth grooves 3221, it can be ensured that the sliding rod 322 continuously drives the drill bit 2 to rotate and drill. The drilled soil will be conveyed into the waste chamber 34 under the action of the material guiding threads 21 on the surface of the drill bit 2 and the conveying threads 3222 outside the sliding rod 322. And during the conveying process, the soil will be gradually compacted (that is, the soil distribution becomes gradually denser from bottom to top on the conveying threads 3222), thereby sealing the lower port of the waste chamber 34. At this time, the gas in the waste chamber 34 will be compressed, and the compressed gas enters the deflection groove 52 through the swirl groove opening 51. Under the swirling force of the compressed gas, the counterweight ball 54 will be pushed to rotate. During the drilling process, the isolation cylinder 4 will, under the vibration force generated during drilling, cooperate with the counterweight ball 54 to compact the hole wall formed at the outer wall position of the isolation cylinder 4, making the hole wall not prone to looseness and collapse during subsequent sampling, ensuring that the soil at different depth positions will not be mixed during sampling, and enabling the isolation cylinder 4 to be more smooth during subsequent downward pressure and not bring the upper layer of soil to the lower layer; the gas entering the deflection groove 52 continues to swirl downward and enters the air curtain groove 53. Under the action of the hook-shaped structure at the bottom of the air curtain groove 53, the gas is blown from the lower side of the drill bit 2 towards the sliding rod 322, thereby blowing the soil drilled by the drill bit 2 to the conveying mechanism 3, achieving the purpose of preventing the soil drilled by the drill bit 2 from moving from the inside of the isolation cylinder 4 to the outside of the isolation cylinder 4, and further avoiding the soil sampled by the sampling mechanism 6 from being a mixture of soils at different depth positions;

[0051] After the isolation cylinder 4 and the drill bit 2 reach the designated depth, rotate the sampling arc shovel 62 to take a sample. Rotate 180 degrees so that the adsorption magnet block 621 and the adsorption iron block 6321 on the isolation sealing plate 63 adsorb each other. At this time, rotate the sampling arc shovel 62 by 180 degrees. The sampling arc shovel 62 will drive the isolation sealing plate 63 to rotate together, and the sampled soil is clamped between the sampling arc shovel 62 and the isolation sealing plate 63. Since the sampling arc shovel 62 rotates on a fixed horizontal plane, the shoveling process will not cause mixing between soils at different depths, and during the subsequent process of lifting the drill, it will not affect the sampled soil. After completing the drill lifting work, just rotate the isolation sealing plate 63 to take out the soil completely.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A geological soil sampling and testing device for mineral exploration, comprising a support frame (1) and a drill bit (2), characterized in that: It also includes a conveying mechanism (3), an isolation cylinder (4), a compaction mechanism (5) and a sampling mechanism (6); the conveying mechanism (3) is connected to the drill bit (2); the isolation cylinder (4) is arranged on the outer ring of the drill bit (2), and when the conveying mechanism (3) rotates, it drives the drill bit (2) to rotate to convey the soil from the lower part of the inner ring of the isolation cylinder (4) to the upper position; the compaction mechanism (5) is arranged on the inner wall of the isolation cylinder (4), and when the soil moves upward under the action of the conveying mechanism (3), the gas in the isolation cylinder (4) is squeezed upward to form a swirling flow, which cooperates with the soil drilling to generate a vibration force, so that the isolation cylinder (4) squeezes the soil at its outer wall, and the gas forming the swirling flow in the compaction mechanism (5) is discharged from the lower part of the isolation cylinder (4) towards the center and above of the isolation cylinder (4) to push the soil; the sampling mechanism (6) is rotatably installed on the outer wall of the isolation cylinder (4), and when the sampling mechanism (6) rotates, it digs the soil at the outer wall position of the isolation cylinder (4) into the wall of the isolation cylinder (4). The sampling mechanism (6) includes a sampling rotating groove (61), a sampling arc shovel (62) and an isolation sealing plate (63); the sampling rotating groove (61) is opened on the side wall of the isolation cylinder (4); the sampling arc shovel (62) is rotatably installed in the sampling rotating groove (61); the isolation sealing plate (63) is rotatably connected to the sampling arc shovel (62), and the curvature radius of the outer wall of the isolation sealing plate (63) is equal to the radius of the isolation cylinder (4). The isolation sealing plate (63) includes a plate body (631), a rotating shaft (632) and a torsion spring (633); the plate body (631) is rotatably inserted at the opening position of the sampling arc shovel (62); the rotating shaft (632) is connected between the plate body (631) and the sampling rotating groove (61), and an adsorption iron block (6321) is arranged at the upper part of the rotating shaft (632); the torsion spring (633) is connected between the rotating shaft (632) and the sampling rotating groove (61); an adsorption magnetic block (621) is arranged at the upper end of the sampling arc shovel (62). The adsorption iron block (6321) and the adsorption magnetic block (621) are arranged at an interval of 180 degrees when not sampling, and the adsorption force between the adsorption iron block (6321) and the adsorption magnetic block (621) is greater than the torsion force of the torsion spring (633). When the sampling arc shovel (62) rotates out of the sampling rotating groove (61), due to the limiting effect of the torsion spring (633), the isolation sealing plate (63) will not rotate, and when it rotates to the sampling arc shovel (62) and the isolation sealing plate (63) form a closed state again, the sampling process will be completed.

2. The geological soil sampling and testing equipment for mineral exploration according to claim 1, characterized in that: Guide threads (21) are arranged on the surface of the drill bit (2); the conveying mechanism (3) includes a driving motor (31), a guide screw (32), a connecting bearing (33) and a waste cavity (34); the driving motor (31) is connected to the support frame (1); the guide screw (32) is connected to the driving motor (31); the connecting bearing (33) is connected between the guide screw (32) and the isolation cylinder (4); the waste cavity (34) is opened in the isolation cylinder (4).

3. The geological soil sampling and detection equipment for mineral exploration according to claim 2, wherein: The material guiding screw rod (32) includes a driving rod (321) and a sliding rod (322); the driving rod (321) is connected to the driving motor (31), and driving sliding teeth (3211) are arranged on the outer wall of the driving rod (321); the sliding rod (322) is sleeved outside the driving rod (321), a sliding tooth groove (3221) meshing with the driving sliding teeth (3211) is formed on the inner wall of the sliding rod (322), a conveying thread (3222) is arranged on the outer wall of the sliding rod (322), and the sliding rod (322) is rotatably installed in the isolation cylinder (4) through a connecting bearing (33); a pressing spring (41) is connected between the isolation cylinder (4) and the support frame (1).

4. The geological soil sampling and testing equipment for mineral exploration according to claim 3, characterized in that: A pressing shovel surface (42) is arranged below the isolation cylinder (4), and the plane where the bottom of the isolation cylinder (4) is located is lower than the plane where the bottom of the drill bit (2) is located.

5. The geological soil sampling and detection equipment for mineral exploration according to claim 2, wherein: The compaction mechanism (5) includes a swirl groove opening (51), a deflection groove (52), an air curtain groove (53) and a counterweight ball (54); the swirl groove opening (51) is formed at the top of the waste cavity (34); the deflection groove (52) is formed on the outer ring of the swirl groove opening (51); the air curtain groove (53) is formed at the lower part of the deflection groove (52), and the bottom section of the air curtain groove (53) is in a hook-shaped structure facing upward; the counterweight ball (54) is rotatably installed in the deflection groove (52).

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