Soil micro-fine particle sampling device for geological exploration

Abstract

A soil micro-fine particle sampling device for geological exploration comprises a bottom plate, movable supporting mechanisms, a sampling mechanism and a screening mechanism, the movable supporting mechanisms are arranged at the four corners of the side wall of the bottom plate, the sampling mechanism is arranged at the front end of the top face of the bottom plate, and the screening mechanism is arranged at the rear end of the top face of the bottom plate and horizontally slides along the bottom plate; the movable supporting mechanism comprises supporting legs, moving wheels, first sliding blocks, connecting rods and a supporting seat, the supporting legs are fixedly arranged on the side wall of the bottom plate, the moving wheels are fixedly arranged at the bottom ends of the supporting legs, the first sliding blocks are inserted into the supporting legs and vertically slide along the supporting legs, and the two ends of the first sliding blocks penetrate through the supporting legs and are fixedly connected with the two connecting rods; the supporting base is fixedly arranged at the bottom ends of the two connecting rods. According to the soil micro-fine particle sampling device for geological exploration provided by the utility model, the supporting seat is put down to support the device through the cooperative use of the supporting seat, the first sliding block and the connecting rod, so that the device is prevented from shifting under the action of external force, meanwhile, the moving wheels are protected, and the stability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of geological exploration, and more specifically, to a soil fine particle sampling device for geological exploration. Background Art

[0002] Geological exploration can be broadly understood as geological work. It is an investigation and research work on the geological conditions such as rocks, stratigraphic structures, minerals, groundwater, landforms, etc. in a certain area using geological exploration methods such as surveying and mapping, geophysical exploration, geochemical prospecting, drilling, pit exploration, sampling testing, and geological remote sensing based on the needs of economic construction, national defense construction, and scientific and technological development.

[0003] The patent with authorization announcement number CN213274910U discloses an integrated rock and soil sampling and screening device, including a frame, a sampling component, a vibration component and a crushing component. The drive motor is connected to the output end of the cylinder, the spiral auger is connected to the output end of the motor, the pipeline is opened on one side of the cover, the vibration box is connected to the frame, and the crushing component includes a first crushing roller and a second crushing roller, the first crushing roller and the second crushing roller are rotatably connected below the feed port, the feed port is opened above the vibration box, the vibration motor is fixedly arranged below the vibration box, the first screen and the second screen are arranged in the vibration box, and finally the screened soil samples of different particle sizes are collected through the collection box, which improves the problem that the soil samples cannot be classified and screened during the sampling process. However, this patent relies only on the roller support device body, which is prone to deviation under the action of external force and has poor stability. Utility Model Content

[0004] The utility model aims to provide a soil fine particle sampling device for geological exploration in order to prevent the device from deflecting under the action of external force.

[0005] A soil fine particle sampling device for geological exploration includes a base plate, a movable support mechanism, a sampling mechanism, and a screening mechanism. The movable support mechanism is arranged at the four corners of the base plate side wall, the sampling mechanism is arranged at the front end of the base plate top surface, and the screening mechanism is arranged at the rear end of the base plate top surface and slides horizontally along the base plate.

[0006] The mobile support mechanism includes a support leg, a moving wheel, a first slider, a connecting rod and a support seat. The support leg is fixedly set on the side wall of the base plate, the moving wheel is fixedly set at the bottom end of the support leg, the first slider is inserted into the inside of the support leg and slides vertically along the support leg, the two ends of the first slider pass through the support leg and are fixedly connected to the two connecting rods, and the support seat is fixedly set at the bottom end of the two connecting rods.

[0007] Furthermore, the mobile support mechanism also includes a first threaded rod, which is inserted into the support leg and rotatably connected to the support leg. The first slider is sleeved on the first threaded rod and slides vertically along the support leg through the first threaded rod.

[0008] Furthermore, an insert tube is fixedly provided at the top of the support leg, the insert tube is communicated with the inside of the support leg, the top of the first threaded rod passes through the insert tube and is fixedly provided with a rotating handle for rotating the first threaded rod.

[0009] Furthermore, a locking screw for locking the rotary handle is inserted into the side wall of the insertion tube.

[0010] Furthermore, the sampling mechanism includes a vertical frame, a first telescopic rod, a horizontal plate, a mounting frame, a first motor, a sampling tube and a pushing assembly. The vertical frame is fixedly arranged at the front end of the top of the base plate, the two first telescopic rods are fixedly arranged at the top end of the inner wall of the vertical frame, the horizontal plate is fixedly arranged at the output ends of the two first telescopic rods and slides vertically along the vertical frame through the first telescopic rods, the mounting frame is fixedly arranged at the bottom end of the horizontal plate, the first motor is fixedly arranged inside the mounting frame, the top end of the sampling tube passes through the bottom surface of the mounting frame and is fixedly connected to the output shaft of the first motor, and the pushing assembly is arranged inside the sampling tube.

[0011] Furthermore, the pushing assembly includes a second telescopic rod and a push plate. The second telescopic rod is fixedly arranged at the top of the inner wall of the sampling tube. The push plate is fixedly arranged at the output end of the second telescopic rod and slides vertically along the sampling tube through the second telescopic rod.

[0012] Furthermore, the screening mechanism includes a base, a second slider, a vibrator, a screening box, a first screening plate and a second screening plate. The two second sliders are fixedly arranged on the bottom surface of the base, and a slide groove is provided at the rear end of the top surface of the bottom plate. The second slider is inserted into the slide groove and slides horizontally along the slide groove. The vibrator is fixedly arranged on the top surface of the base, and the screening box is fixedly arranged at the output end of the vibrator. A feed port is fixedly arranged on the top of the screening box, and the feed port is connected with the interior of the screening box. The first screening plate and the second screening plate are fixed vertically and side by side inside the screening box. A discharge port is fixedly arranged on the side wall of the screening box, and all three discharge ports are connected with the interior of the screening box.

[0013] Furthermore, the screening mechanism also includes a second threaded rod and a second motor. The second threaded rod is inserted into the slide groove and is rotatably connected to the base plate. The second slider is sleeved on the second threaded rod and slides horizontally along the slide groove through the second threaded rod. A groove is opened inside the base plate. The second motor is fixedly arranged inside the groove. One end of the second threaded rod passes through the groove and is fixedly connected to the output shaft of the second motor.

[0014] Furthermore, springs for stabilizing the screening box are fixedly provided at the four corners of the bottom surface of the screening box, and the bottom ends of the springs are fixedly connected to the top surface of the base.

[0015] Furthermore, a handrail is fixedly provided on the side wall of the bottom plate to facilitate pushing the device.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] ① The soil fine particle sampling device for geological exploration provided by the utility model is provided with a support seat. The first slider and the connecting rod are used in conjunction to lower the support seat to support the device, thereby preventing the device from deflecting under the action of external force, while protecting the moving wheels and improving the stability of the device.

[0018] ② The soil fine particle sampling device for geological exploration provided by the utility model is provided with an insert tube and a locking screw. The insert tube and the locking screw are used in conjunction with each other to lock and fix the rotary handle, thereby improving the stability of the device.

[0019] ③ The soil fine particle sampling device for geological exploration provided by the utility model is provided with a base, and the base and the second slider are used in conjunction to move the screening box under the sampling tube, which is convenient for collecting samples and improves the screening efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 The utility model is a schematic diagram of the overall structure of the soil fine particle sampling device for geological exploration.

[0022] Figure 2 It is a schematic diagram of the specific structure of the mobile support mechanism in the utility model.

[0023] Figure 3 It is a schematic diagram of the specific structure of the sampling mechanism in the utility model.

[0024] Figure 4 It is a schematic diagram of the specific structure of the screening mechanism in the present utility model.

[0025] In the figure: 1. Base plate; 2. Support legs; 3. Moving wheels; 4. First slider; 5. Connecting rod; 6. Support seat; 7. First threaded rod; 8. Insert cylinder; 9. Rotary handle; 10. Locking screw; 11. Vertical frame; 12. First telescopic rod; 13. Horizontal plate; 14. Mounting frame; 15. First motor; 16. Sampling cylinder; 17. Second telescopic rod; 18. Push plate; 19. Base; 20. Second slider; 21. Vibrator; 22. Screening box; 23. First screening plate; 24. Second screening plate; 25. Chute; 26. Feed port; 27. Discharge port; 28. Second threaded rod; 29. ​​Second motor; 30. Groove; 31. Spring; 32. Handrail. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 making creative efforts are within the scope of protection of the present invention.

[0027] like Figure 1 As shown, a soil fine particle sampling device for geological exploration includes a base plate 1, a movable support mechanism, a sampling mechanism and a screening mechanism. The movable support mechanism is arranged at the four corners of the side wall of the base plate 1, the sampling mechanism is arranged at the front end of the top surface of the base plate 1, and the screening mechanism is arranged at the rear end of the top surface of the base plate 1 and slides horizontally along the base plate 1. Specifically, the base plate 1 is arranged at the four corners of the side wall of the base plate 1, the sampling mechanism is arranged at the front end of the top surface of the base plate 1, and the screening mechanism is arranged at the rear end of the top surface of the base plate 1, and the screening mechanism slides horizontally along the base plate 1.

[0028] like Figure 2 As shown, the movable support mechanism includes a support leg 2, a movable wheel 3, a first slider 4, a connecting rod 5 and a support seat 6. The support leg 2 is fixedly arranged on the side wall of the base plate 1, the movable wheel 3 is fixedly arranged at the bottom end of the support leg 2, the first slider 4 is inserted into the inside of the support leg 2 and slides vertically along the support leg 2, the two ends of the first slider 4 pass through the support leg 2 and are fixedly connected to the two connecting rods 5, and the support seat 6 is fixedly arranged at the bottom end of the two connecting rods 5. Specifically, the side wall of the base plate 1 is welded with the support leg 2, the bottom end of the support leg 2 is welded with the movable wheel 3, the first slider 4 is inserted into the inside of the support leg 2 and slides vertically along the support leg 2, the two ends of the first slider 4 pass through the support leg 2 and are welded to the two connecting rods 5, and the support seat 6 is welded to the bottom end of the two connecting rods 5.

[0029] In the present invention, by setting a support seat 6, the first slider 4 and the connecting rod 5 are used in conjunction to lower the support seat 6 to support the device, preventing the device from shifting under the action of external force, while protecting the moving wheel 3 and improving the stability of the device.

[0030] The mobile support mechanism also includes a first threaded rod 7, which is inserted into the inside of the leg 2 and is rotatably connected to the leg 2. The first slider 4 is sleeved on the first threaded rod 7 and slides vertically along the leg 2 through the first threaded rod 7. Specifically, the first threaded rod 7 is inserted into the inside of the leg 2 and is rotatably connected to the leg 2. A through hole is opened on the first slider 4. The first slider 4 is sleeved on the first threaded rod 7 through the through hole and slides vertically along the leg 2 through the first threaded rod 7.

[0031] An insert tube 8 is fixedly provided at the top of the leg 2, and the insert tube 8 is communicated with the inside of the leg 2. The top of the first threaded rod 7 passes through the insert tube 8 and is fixedly provided with a handle 9 for rotating the first threaded rod 7. Specifically, an insert tube 8 is welded to the top of the leg 2, and the insert tube 8 is communicated with the inside of the leg 2. The top of the first threaded rod 7 passes through the insert tube 8 and is welded with a handle 9 for rotating the first threaded rod 7.

[0032] A locking screw 10 for locking the handle 9 is inserted into the side wall of the insert tube 8. Specifically, screw holes are opened at both ends of the side wall of the insert tube 8. The two locking screws 10 respectively pass through the screw holes on the side wall of the insert tube 8 and one end of the screws 10 is inserted into the inside of the insert tube 8 and contacts the handle 9.

[0033] In the present invention, an insert cylinder 8 and a locking screw 10 are provided, and the insert cylinder 8 and the locking screw 10 are used in conjunction with each other to lock and fix the rotary handle 9, thereby improving the stability of the device.

[0034] like Figure 3 As shown, the sampling mechanism includes a vertical frame 11, a first telescopic rod 12, a horizontal plate 13, a mounting frame 14, a first motor 15, a sampling barrel 16 and a pushing assembly. The vertical frame 11 is fixedly arranged at the front end of the top of the bottom plate 1, the two first telescopic rods 12 are fixedly arranged at the top of the inner wall of the vertical frame 11, the horizontal plate 13 is fixedly arranged at the output end of the two first telescopic rods 12 and slides vertically along the vertical frame 11 through the first telescopic rod 12, the mounting frame 14 is fixedly arranged at the bottom end of the horizontal plate 13, the first motor 15 is fixedly arranged inside the mounting frame 14, and the top of the sampling barrel 16 passes through the bottom surface of the mounting frame 14 and is fixed to the output shaft of the first motor 15 Fixed connection, the pushing component is arranged inside the sampling barrel 16, specifically, the vertical frame 11 is welded to the top front end of the bottom plate 1, and the two first telescopic rods 12 are fixed to the top end of the inner wall of the vertical rod through the base, the horizontal plate 13 is welded to the output ends of the two first telescopic rods 12, and slides vertically along the vertical frame 11 through the first threaded rod 7, the mounting frame 14 is welded to the bottom end of the horizontal plate 13, and the first motor 15 is fixed to the inside of the mounting frame 14 through the motor seat. The top end of the sampling barrel 16 passes through the bottom surface of the mounting frame 14 and is fixed to the output shaft of the first motor 15, and a pushing component is provided inside the sampling barrel 16.

[0035] The pushing assembly includes a second telescopic rod 17 and a push plate 18. The second telescopic rod 17 is fixedly arranged at the top end of the inner wall of the sampling tube 16. The push plate 18 is fixedly arranged at the output end of the second telescopic rod 17 and slides vertically along the sampling tube 16 through the second telescopic rod 17. Specifically, the second telescopic rod 17 is fixed to the top end of the inner wall of the sampling tube 16 through the base, and the push plate 18 is welded to the output end of the second telescopic rod 17, and slides vertically along the sampling tube 16 through the second telescopic rod 17.

[0036] like Figure 4As shown, the screening mechanism includes a base 19, a second slider 20, a vibrator 21, a screening box 22, a first screening plate 23 and a second screening plate 24. The two second sliders 20 are fixedly arranged on the bottom surface of the base 19. A chute 25 is provided at the rear end of the top surface of the bottom plate 1. The second slider 20 is inserted into the chute 25 and slides horizontally along the chute 25. The vibrator 21 is fixedly arranged on the top surface of the base 19. The screening box 22 is fixedly arranged at the output end of the vibrator 21. A feed port 26 is fixedly provided at the top of the screening box 22. The feed port 26 is connected to the inside of the screening box 22. The first screening plate 23 and the second screening plate 24 are fixedly arranged vertically and side by side in the inside of the screening box 22. A discharge port 27 is fixedly provided on the side wall of the screening box 22. The three discharge ports 27 are all connected to the inside of the screening box 22. The connection is specifically manifested as two second sliders 20 welded to the bottom surface of the bottom plate 1, and a slide groove 25 is opened at the rear end of the top surface of the bottom plate 1. The second slider 20 is inserted into the inside of the slide groove 25 and slides horizontally along the slide groove 25. The vibrator 21 is fixed to the top surface of the base 19 through the base, and the screening box 22 is welded to the output end of the vibrator 21. The top of the screening box 22 is welded with a feed port 26, and the feed port 26 is connected to the inside of the screening box 22. The first screening plate 23 and the second screening plate 24 are vertically arranged in parallel inside the screening box 22. The first screening plate 23 is welded to the upper part of the screening box 22, and the second screening plate 24 is welded to the lower part of the screening box 22. The side wall of the screening box 22 is welded with a discharge port 27, and the three discharge ports 27 are all connected to the inside of the screening box 22.

[0037] The screening mechanism also includes a second threaded rod 28 and a second motor 29. The second threaded rod 28 is inserted into the interior of the slide groove 25 and is rotatably connected to the bottom plate 1. The second slider 20 is sleeved on the second threaded rod 28 and slides horizontally along the slide groove 25 through the second threaded rod 28. A groove 30 is opened inside the bottom plate 1, and the second motor 29 is fixed inside the groove 30. Preferably, the second motor 29 has a self-locking function, one end of the second threaded rod 28 passes through the groove 30 and is fixedly connected to the output shaft of the second motor 29. Specifically, the second threaded rod 28 is inserted into the interior of the slide groove 25 and is rotatably connected to the bottom plate 1. A through hole is opened on the second slider 20, and the second slider 20 is sleeved on the second threaded rod 28 through the through hole and slides horizontally along the slide groove 25 through the second threaded rod 28. A groove 30 is opened inside the bottom plate 1, and the second motor 29 is fixed inside the groove 30 through the motor seat. One end of the second threaded rod 28 passes through the groove 30 and is fixedly connected to the output shaft of the second motor 29.

[0038] Springs 31 for stabilizing the screening box 22 are fixedly provided at the four corners of the bottom surface of the screening box 22, and the bottom end of the spring 31 is fixedly connected to the top surface of the base 19. Specifically, springs 31 are welded at the four corners of the bottom surface of the screening box 22 to stabilize the screening box 22, and the bottom end of the spring 31 is welded to the top surface of the base 19.

[0039] The side wall of the bottom plate 1 is fixedly provided with an armrest 32 for facilitating the pushing of the device. Specifically, the side wall of the bottom plate 1 is welded with an armrest 32 for facilitating the pushing of the device.

[0040] The working principle of the soil fine particle sampling device for geological exploration in this embodiment is:

[0041] The staff moves the device to the designated position through the handrail 32 and the moving wheel 3, turns the handle 9, the first threaded rod 7 rotates with the handle 9, the first slider 4 rotates with the first threaded rod 7 and slides vertically along the support leg 2, the connecting rod 5 moves vertically with the first slider 4, the support seat 6 moves vertically with the connecting rod 5 to the designated position on the ground, tightens the locking screw 10 to lock the handle 9, the first motor 15 rotates the output shaft, the sampling tube 16 rotates with the output shaft, and at the same time the first telescopic rod 12 extends out of the output end, the cross plate 13 slides vertically downward along the inside of the vertical frame 11 with the output end, the mounting frame 14 moves vertically downward with the cross plate 13, and the sampling tube 16 moves vertically downward with the mounting frame 14 to perform sampling. After the sampling is completed, the first telescopic rod 12 retracts to the output end, the cross plate 13 slides vertically upward along the inside of the vertical frame 11 with the output end, the mounting frame 14 moves vertically upward with the cross plate 13, and the sampling tube 16 moves vertically upward with the mounting frame 14, and the second motor 29 rotates the output shaft The output shaft, the second threaded rod 28 rotates with the output shaft, the second slider 20 slides horizontally along the slide groove 25 with the second threaded rod 28, the base 19 moves horizontally with the second slider 20, and the screening box 22 moves horizontally with the base 19 to the bottom end of the sampling cylinder 16. The second telescopic rod 17 extends out of the output end, and the push plate 18 slides vertically along the sampling cylinder 16 with the second telescopic rod 17 to push the sample out of the sampling cylinder 16, and the sample falls into the screening box 22 through the feed port 26. The second motor 29 reverses the output shaft, the second threaded rod 28 rotates with the output shaft, the second slider 20 slides horizontally along the slide groove 25 with the second threaded rod 28, the base 19 moves horizontally with the second slider 20, and the screening box 22 moves horizontally with the base 19 to its original position, the vibrator 21 vibrates, and the screening box 22 performs screening work with the vibrator 21. The sample passes through the first screening plate 23 and the second screening plate 24 to be separated into different particle sizes, and samples of different particle sizes are sieved out respectively through the three discharge ports 27.

[0042] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A soil fine particle sampling device for geological exploration, characterized by: It comprises a bottom plate (1), a movable support mechanism, a sampling mechanism and a screening mechanism, wherein the movable support mechanism is arranged at the four corners of the side wall of the bottom plate (1), the sampling mechanism is arranged at the front end of the top surface of the bottom plate (1), and the screening mechanism is arranged at the rear end of the top surface of the bottom plate (1) and slides horizontally along the bottom plate (1); The movable support mechanism comprises a support leg (2), a movable wheel (3), a first slider (4), a connecting rod (5) and a support seat (6); the support leg (2) is fixedly arranged on the side wall of the base plate (1); the movable wheel (3) is fixedly arranged at the bottom end of the support leg (2); the first slider (4) is inserted into the inside of the support leg (2) and slides vertically along the support leg (2); both ends of the first slider (4) pass through the support leg (2) and are fixedly connected to the two connecting rods (5); and the support seat (6) is fixedly arranged at the bottom ends of the two connecting rods (5).

2. The soil fine particle sampling device for geological exploration according to claim 1, characterized in that: The mobile support mechanism further comprises a first threaded rod (7), the first threaded rod (7) being inserted into the support leg (2) and being rotatably connected to the support leg (2), and the first slider (4) being sleeved on the first threaded rod (7) and vertically sliding along the support leg (2) via the first threaded rod (7).

3. The soil fine particle sampling device for geological exploration according to claim 2, characterized in that: The top of the support leg (2) is fixedly provided with an insert cylinder (8), the insert cylinder (8) is communicated with the interior of the support leg (2), the top of the first threaded rod (7) passes through the insert cylinder (8) and is fixedly provided with a rotary handle (9) for rotating the first threaded rod (7).

4. The soil fine particle sampling device for geological exploration according to claim 3, characterized in that: A locking screw (10) for locking the rotary handle (9) is inserted into the side wall of the inserting cylinder (8).

5. The soil fine particle sampling device for geological exploration according to claim 1, characterized in that: The sampling mechanism comprises a vertical frame (11), a first telescopic rod (12), a horizontal plate (13), a mounting frame (14), a first motor (15), a sampling barrel (16) and a pushing assembly, wherein the vertical frame (11) is fixedly arranged at the front end of the top of the bottom plate (1), the two first telescopic rods (12) are fixedly arranged at the top end of the inner wall of the vertical frame (11), the horizontal plate (13) is fixedly arranged at the output ends of the two first telescopic rods (12) and vertically slides along the vertical frame (11) through the first telescopic rods (12), the mounting frame (14) is fixedly arranged at the bottom end of the horizontal plate (13), the first motor (15) is fixedly arranged inside the mounting frame (14), the top end of the sampling barrel (16) passes through the bottom surface of the mounting frame (14) and is fixedly connected to the output shaft of the first motor (15), and the pushing assembly is arranged inside the sampling barrel (16).

6. The soil fine particle sampling device for geological exploration according to claim 5, characterized in that: The pushing assembly includes a second telescopic rod (17) and a push plate (18), wherein the second telescopic rod (17) is fixedly arranged at the top end of the inner wall of the sampling cylinder (16), and the push plate (18) is fixedly arranged at the output end of the second telescopic rod (17) and slides vertically along the sampling cylinder (16) through the second telescopic rod (17).

7. The soil fine particle sampling device for geological exploration according to claim 1, characterized in that: The screening mechanism comprises a base (19), a second slider (20), a vibrator (21), a screening box (22), a first screening plate (23) and a second screening plate (24), wherein the two second sliders (20) are fixedly arranged on the bottom surface of the base (19), a chute (25) is provided at the rear end of the top surface of the bottom plate (1), the second slider (20) is inserted into the chute (25) and slides horizontally along the chute (25), and the vibrator (21) is fixedly arranged on the top surface of the base (19). The screening box (22) is fixedly arranged at the output end of the vibrator (21), a feed port (26) is fixedly arranged at the top of the screening box (22), and the feed port (26) is communicated with the interior of the screening box (22). The first screening plate (23) and the second screening plate (24) are fixedly arranged vertically and side by side inside the screening box (22), and a discharge port (27) is fixedly arranged on the side wall of the screening box (22), and the three discharge ports (27) are all communicated with the interior of the screening box (22).

8. The soil fine particle sampling device for geological exploration according to claim 7, characterized in that: The screening mechanism further includes a second threaded rod (28) and a second motor (29), wherein the second threaded rod (28) is inserted into the chute (25) and is rotatably connected to the base plate (1), the second slider (20) is sleeved on the second threaded rod (28) and slides horizontally along the chute (25) through the second threaded rod (28), a groove (30) is provided inside the base plate (1), the second motor (29) is fixedly arranged inside the groove (30), one end of the second threaded rod (28) passes through the groove (30) and is fixedly connected to the output shaft of the second motor (29).

9. The soil fine particle sampling device for geological exploration according to claim 7, characterized in that: Springs (31) for stabilizing the screening box (22) are fixedly provided at the four corners of the bottom surface of the screening box (22), and the bottom end of the spring (31) is fixedly connected to the top surface of the base (19).

10. The soil fine particle sampling device for geological exploration according to claim 1, characterized in that: The side wall of the bottom plate (1) is fixedly provided with an armrest (32) for facilitating the pushing of the device.

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