Multifunctional hydrogeological survey drilling sampling device

Abstract

A multifunctional hydrogeological survey drilling sampling device belongs to the technical field of geological drilling. The device comprises a base, two supporting frames are fixedly connected to the top of the base, threaded rods are fixedly connected to the interiors of the two supporting frames, a mounting frame is jointly connected to the outer walls of the two threaded rods through threads, a hollow drill bit is rotatably connected to the interior of the mounting frame in a penetrating mode, and a sliding groove is formed in the top of the hollow drill bit; a sampling mechanism is arranged on the inner wall of the sliding groove and comprises a sliding block and a sampling box, so that the depths of multiple groups of sampling positions are freely adjusted before sampling. By utilizing the elastic force of a second spring and the pushing force of a sliding rod, the sampling box extrudes the inner wall of a hole, samples, soil and crushed rocks are inserted into the box, and the sliding rod is reversely pushed to reset, so that the depths of a plurality of sampling positions are accurately and freely controlled, and mixing can be avoided due to respective independent storage; therefore, the accuracy can be ensured while the sampling effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of geological drilling, and particularly relates to a multifunctional hydrogeological investigation drilling and sampling device. Background Art

[0002] With the development of science and the needs of production and construction, hydrogeology has been divided into branch disciplines such as regional hydrogeology, groundwater dynamics, hydrogeochemistry, water supply hydrogeology, ore deposit hydrogeology, and hydrogeology for soil improvement. In recent years, the research in hydrogeology has penetrated with that in aspects such as geothermal energy, earthquake, and environmental geology, and several new fields have been formed.

[0003] Hydrogeological detection is to detect the groundwater environment of a certain area or region, so as to master the distribution and law of groundwater and rocks for detection. Through the "two-pronged" strategy of obtaining information on groundwater and rocks, both the quantity and quality of water resources are concerned, and the structure and evolution of the geological environment are also emphasized.

[0004] The drilling and sampling device for multi-layer formations provided by the publication number "CN116718418A" can move up and down freely along the bottom connecting rod and the connecting sleeve to perform sample sampling. As the drilling depth is different, the corresponding debris will be at different heights in the material taking sleeve. Therefore, there is almost no mixing between different materials with a height difference of several centimeters.

[0005] However, the following problems still exist in the implementation of the above device:

[0006] This device collects and samples the soil and rock debris generated by the drill hole through the material taking sleeve. The principle of no mixing is to judge the sampling depth by the order in which the sampled objects enter the material taking sleeve. However, in actual use, since the inside of the material taking sleeve is initially empty, the sampled objects at the beginning have more movable space inside the material taking sleeve. At the same time, due to the large vibration generated during the drilling process, this vibration will mix the sampled objects in the internal space of the material taking sleeve, resulting in the inability to judge the depth position of the sampled objects when they are sampled, leading to inaccurate detection data of the sampled objects and thus affecting the implementation of the investigation work. Summary of the Invention

[0007] The purpose of the present invention is to solve the problems raised in the above background art, and to propose a multifunctional hydrogeological investigation drilling and sampling device.

[0008] To achieve the above object, the present invention adopts the following technical solution: A multifunctional hydrogeological survey drilling and sampling device, including a base, two support frames are fixedly connected to the top of the base, threaded rods are fixedly connected inside both of the two support frames, an installation frame is commonly connected to the outer walls of the two threaded rods through threads, a hollow drill bit is rotatably connected through the interior of the installation frame, and a sliding groove is opened at the top of the hollow drill bit, and a sampling mechanism is arranged on the inner wall of the sliding groove;

[0009] The sampling mechanism includes a sliding block and a sampling box, so as to freely adjust the depth of multiple sampling positions before sampling;

[0010] A knocking mechanism is arranged on the side wall of the sliding block to knock and vibrate the sampling box during sampling;

[0011] A sealing mechanism is arranged on the inner wall of the hollow drill bit to automatically seal the sampling port of the sampling box after sampling is completed.

[0012] Furthermore, the sampling mechanism includes a sliding rod, and through grooves are opened through the inner wall of the sliding rod, two inclined blocks are slidably connected to the inner wall of the through grooves, limiting rods are fixedly connected to the ends of the two inclined blocks, a first spring is commonly fixedly connected to the opposite sides of the two limiting rods, a clamping groove is opened on the side wall of the sliding block facing the sliding rod, a second spring is fixedly connected to the side of the sliding block away from the sliding rod, the side wall of the sampling box is fixedly connected to the end of the second spring away from the sliding block, a pressing rod is slidably connected to the inner wall of the sliding rod, and a third spring is fixedly connected to the end of the pressing rod located inside the sliding rod away from the pressing rod, the third spring is fixedly connected inside the sliding rod, a limiting groove is opened on the outer wall of the pressing rod, and the inner wall of the limiting groove corresponds to the inner wall of the through groove, and an uneven groove is opened on the side wall of the sampling box.

[0013] Furthermore, the outer wall of the sliding rod is slidably connected to the inner wall of the sliding groove, the end of the inclined block away from the limiting rod is slidably connected to the inner wall of the limiting groove, the inclined surface at the end of the inclined block corresponds to the inclined surface of the inner wall of the limiting groove, the outer wall of the limiting rod is slidably connected to the inner wall of the clamping groove, and the side wall of the sliding block away from the second spring is slidably connected to the outer wall of the sliding rod.

[0014] Furthermore, the knocking mechanism includes a fixed rod, and a guide rod is slidably connected to one end of the fixed rod away from the sliding block. A knocking block is fixedly connected to the end of the guide rod away from the fixed rod. An inner groove is formed inside the knocking block, and two clamping blocks are slidably connected to the inner wall of the inner groove. A fourth spring is fixedly connected between the two clamping blocks. A fifth spring is fixedly connected to the side of the knocking block facing the guide rod, and the end of the fifth spring away from the knocking block is fixedly connected to the end of the fixed rod.

[0015] Furthermore, the outer wall of the fixed rod is slidably connected to the inner wall of the concave-convex groove, and the inclined surface of the outer wall of the clamping block corresponds to the inner wall of the concave-convex groove.

[0016] Furthermore, the sealing mechanism includes a fixed ring, and a fixed block is fixedly connected to the side wall of the fixed ring. Sixth springs are fixedly connected to both sides of the fixed block. Sealing wall plates are fixedly connected to the ends of the two sixth springs away from the fixed block. Oblique openings are formed at the ends of the two sealing wall plates close to each other.

[0017] Furthermore, a through opening is formed through the inner wall of the hollow drill bit. The side of the fixed ring away from the fixed block is fixedly connected to the outer wall of the fixed ring. The outer wall of the sealing wall plate is slidably connected to the inner wall of the hollow drill bit. The side wall of the sampling box is slidably connected to the inner wall of the through opening. The sampling port of the sampling box corresponds to the side wall of the oblique opening.

[0018] Furthermore, a first gear is fixedly connected to the outer wall of the hollow drill bit. A rotating shaft is rotatably connected to the top of the mounting frame, and a second gear is fixedly connected to the outer wall of the rotating shaft. The inner wall of the teeth of the second gear is meshed with the inner wall of the teeth of the first gear. The support frame and the rotating shaft are driven by the belt transmission assembly.

[0019] Furthermore, a motor is fixedly installed on the top of the mounting frame, and a third gear is fixedly connected to the output shaft of the motor. The inner wall of the teeth of the third gear is meshed with the inner wall of the teeth of the first gear. A conveying blade is fixedly connected to the outer wall of the hollow drill bit.

[0020] Compared with the prior art, the above solution has the following beneficial effects:

[0021] 1. The elastic force of the second spring and the thrust of the sliding rod can squeeze the inner wall of the hole by the sampling box, so that the sampling box is inserted into the inner wall of the hole. At this time, part of the soil and broken rocks will enter the inside of the sampling box. Then, by pushing the sliding rod reversely to reset and slide along the inner wall of the sliding groove, and then the sampling box will follow the sliding block to reset and move, thus completing the sampling work at multiple specified positions at one time, achieving precise free control of the depth of multiple sampling positions, and the separate independent storage can avoid mixing, thereby improving the sampling effect and ensuring the accuracy rate at the same time.

[0022] 2. Reset and slide through the elastic force of the inner groove, and drive the clamping block to knock on the inner wall of the concave-convex groove through the elastic force of the fifth spring, which will cause the sampling box to vibrate multiple times during the movement. By vibrating the sampling box, micro-cracks will be generated on the contact surface between the soil and the core and the sampling box, improving the sampling integrity rate of the sampling box for the sampled object, thus retaining the original characteristics of the sampled object. At the same time, through vibration, the situation that the sampling box is stuck when encountering a hard interlayer during sampling can be avoided, improving the usability of the device for sampling.

[0023] 3. Automatically seal the sampling box after sampling to prevent the sampled object inside it from contacting air during the sampling process, resulting in irreversible changes in physical, chemical, and biological properties, and causing the subsequent detection data to be distorted. Through the sealing treatment, the original characteristics of the sample can be retained to the greatest extent, providing a reliable basis for hydrogeological research, environmental monitoring, and resource exploration. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure proposed by the present invention;

[0025] Figure 2 It is a schematic diagram of the internal structure of the hollow drill bit proposed by the present invention;

[0026] Figure 3 It is a schematic diagram of the structural transmission of the sliding block and the pressure rod proposed by the present invention;

[0027] Figure 4 It is a schematic diagram of the internal structure of the sliding rod proposed by the present invention;

[0028] Figure 5 It is a schematic diagram of the structural connection between the sliding block and the sampling box proposed by the present invention;

[0029] Figure 6 It is a schematic diagram of the structural connection between the fixed rod and the fourth spring proposed by the present invention;

[0030] Figure 7 It is a schematic diagram of the structural connection between the sliding rod and the first spring proposed by the present invention.

[0031] The reference signs in the drawings are: 1, base; 2, support frame; 3, threaded rod; 4, mounting frame; 5, hollow drill bit; 6, sliding groove; 7, sampling mechanism; 8, knocking mechanism; 9, sealing mechanism; 10, through port; 11, first gear; 12, rotating shaft; 13, second gear; 14, belt drive assembly; 15, motor; 16, third gear; 17, conveying blade; 701, sliding rod; 702, through groove; 703, inclined block; 704, limiting rod; 705, first spring; 706, sliding block; 707, clamping groove; 708, second spring; 709, sampling box; 710, pressing rod; 711, third spring; 712, limiting groove; 713, concave-convex groove; 801, fixed rod; 802, guide rod; 803, knocking block; 804, inner groove; 805, clamping block; 806, fourth spring; 807, fifth spring; 901, fixed ring; 902, fixed block; 903, sixth spring; 904, sealing wall plate; 905, inclined surface. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top surface", "bottom surface", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated position or element must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish an entity or operation from another entity or operation, and do not require or imply any actual relationship, sequence or relative importance between these entities or operations.

[0034] Embodiment 1, please refer to Figures 1-5, a multifunctional hydrogeological survey drilling and sampling device, including a base 1. Two support frames 2 are fixedly connected to the top of the base 1. Threaded rods 3 are fixedly connected to the inside of the two support frames 2. An installation frame 4 is commonly connected to the outer walls of the two threaded rods 3 through threads. A hollow drill bit 5 is rotatably connected through the inside of the installation frame 4. A sliding groove 6 is opened at the top of the hollow drill bit 5. A sampling mechanism 7 is arranged on the inner wall of the sliding groove 6. A through port 10 is penetrated and opened on the inner wall of the hollow drill bit 5. A first gear 11 is fixedly connected to the outer wall of the hollow drill bit 5. A rotating shaft 12 is rotatably connected to the top of the installation frame 4. A second gear 13 is fixedly connected to the outer wall of the rotating shaft 12. A motor 15 is fixedly installed on the top of the installation frame 4. An output shaft of the motor 15 is fixedly connected to a third gear 16. The inner wall of the teeth of the third gear 16 is matched and meshed with the inner wall of the teeth of the first gear 11. A conveying blade 17 is fixedly connected to the outer wall of the hollow drill bit 5;

[0035] The sampling mechanism 7 includes a sliding block 706 and a sampling box 709 to freely adjust the depth of multiple sampling positions before sampling;

[0036] Furthermore, the sampling mechanism 7 includes a sliding rod 701. A through groove 702 is penetrated and opened on the inner wall of the sliding rod 701. Two inclined blocks 703 are slidably connected to the inner wall of the through groove 702. Limiting rods 704 are fixedly connected to the ends of the two inclined blocks 703. A first spring 705 is fixedly connected to the relative sides of the two limiting rods 704. A clamping groove 707 is opened on the side wall of the sliding block 706 facing the sliding rod 701. A second spring 708 is fixedly connected to the side of the sliding block 706 away from the sliding rod 701. The side wall of the sampling box 709 is fixedly connected to the end of the second spring 708 away from the sliding block 706. A pressing rod 710 is slidably connected to the inner wall of the sliding rod 701. A third spring 711 is fixedly connected to the end of the pressing rod 710 located inside the sliding rod 701 and away from the pressing rod 710. The third spring 711 is fixedly connected to the inside of the sliding rod 701. A limiting groove 712 is opened on the outer wall of the pressing rod 710. The inner wall of the limiting groove 712 corresponds to the inner wall of the through groove 702. An uneven groove 713 is opened on the side wall of the sampling box 709;

[0037] More specifically, before conducting hydrogeological sampling, first slide the sampling box 709 out along the inner wall of the through-hole 10 by pushing the sliding rod 701. Then, by pressing the pressing rod 710, the pressing rod 710 slides into the interior of the sliding rod 701. During this process, the third spring 711 will be compressed. While the pressing rod 710 is sliding, it will squeeze the inclined surface of the inclined block 703 through the inclined surface of the limiting groove 712. After that, the two inclined blocks 703 will move in opposite directions. At the same time, the inclined block 703 will drive the limiting rod 704 to move synchronously, compressing the first spring 705. When the sliding of the pressing rod 710 is completed, at this time, the two limiting rods 704 will fit together. Then, the sliding block 706 can be placed on the outer wall position of the limiting rod 704 through the card slot 707. At the same time, the sliding block 706 can be controlled to slide along the outer wall of the limiting rod 704 through the card slot 707 to the designated position, so as to control the height of the sampling box 709 inside the hollow drill bit 5 and thus control the depth of subsequent sampling. At the same time, multiple groups of sliding blocks 706 can be installed corresponding to multiple designated positions;

[0038] When conducting hydrogeological sampling, first place the device in the sampling area, then fix the base 1 on the ground, and then perform the sampling work through the drive motor 15. Then, the output shaft of the motor 15 will drive the third gear 16 to rotate. Next, the third gear 16 will drive the hollow drill bit 5 to rotate synchronously through the first gear 11. At the same time, the first gear 11 will drive the second gears 13 on both sides to rotate. Then, the rotating shaft 12 will rotate synchronously with the second gear 13. After that, the rotating shaft 12 will drive the threaded rod 3 to rotate through the belt drive assembly 14. When the threaded rod 3 rotates, it will drive the mounting frame 4 to descend. At this time, the mounting frame 4 will drive the hollow drill bit 5 to move downward. After that, when the bottom of the hollow drill bit 5 touches the ground, the ground can be drilled through the rotation of the hollow drill bit 5. At the same time, the soil and rocks generated by drilling will be transported upward to the ground through the conveying blades 17;

[0039] When the hollow drill bit 5 drills to the specified depth, the driving of the third gear 16 is stopped at this time, and then the hollow drill bit 5 stops rotating and descending. At this time, the sliding rod 701 is pushed to slide along the inner wall of the sliding groove 6. Then, the sliding rod 701 drives the sliding block 706 to move synchronously. Then, the sliding block 706 drives the sampling box 709 to move synchronously through the second spring 708. After that, the sampling box 709 moves outward along the inner wall of the through port 10. Then, the sampling port of the sampling box 709 presses against and fits the inner wall of the hole. Through the elastic force of the second spring 708 and the thrust of the sliding rod 701, the sampling box 709 can be pressed against the inner wall of the hole, so that the sampling box 709 is inserted into the inner part of the inner wall of the hole. At this time, part of the soil and broken rocks will enter the inside of the sampling box 709. After that, the sliding rod 701 is pushed reversely to slide back along the inner wall of the sliding groove 6. At the same time, the sliding block 706 will move along with the sliding rod 701. Then, the sampling box 709 will move back along with the sliding block 706 through the second spring 708, so that the sampling box 709 after sampling is completed slides along the inner wall of the through port 10 into the inside of the hollow drill bit 5, thus completing the sampling work at multiple specified positions at one time, and realizing the precise free control of the depth of multiple sampling positions.

[0040] Embodiment 2. Please refer to Figures 5-6 , on the basis of Embodiment 1, in this embodiment, a knocking mechanism 8 is provided on the side wall of the sliding block 706 to knock and vibrate the sampling box 709 during sampling;

[0041] Furthermore, the knocking mechanism 8 includes a fixing rod 801. One end of the fixing rod 801 away from the sliding block 706 is slidably connected to a guiding rod 802. One end of the guiding rod 802 away from the fixing rod 801 is fixedly connected to a knocking block 803. An inner groove 804 is formed inside the knocking block 803. Two clamping blocks 805 are slidably connected to the inner wall of the inner groove 804. A fourth spring 806 is fixedly connected between the two clamping blocks 805. One side of the knocking block 803 facing the guiding rod 802 is fixedly connected to a fifth spring 807. One end of the fifth spring 807 away from the knocking block 803 is fixedly connected to the end of the fixing rod 801. The outer wall of the fixing rod 801 is slidably connected to the inner wall of the concave-convex groove 713. The outer wall inclined surface of the clamping block 805 corresponds to the inner wall of the concave-convex groove 713;

[0042] More specifically, during sampling, when the sliding block 706 drives the sampling box 709 to move through the second spring 708, and then during the process of the sampling box 709 being inserted into the inner wall of the hole, the sampling box 709 will encounter a certain resistance. At the same time, the sliding block 706 will drive the fixed rod 801 to move, causing the fixed rod 801 to slide along the inner wall of the concave-convex groove 713. At the same time, the fixed rod 801 will squeeze the knocking block 803 through the fifth spring 807. Then, the knocking block 803 will be blocked by the clamping block 805 on the inner wall of the concave-convex groove 713. After that, the continuous process of the sliding block 706 driving the fixed rod 801 will compress the second spring 708. Then, when the second spring 708 is compressed to a certain extent, at this time, the knocking block 803 will receive a greater thrust, and at the same time, the force exerted by the inner wall of the concave-convex groove 713 on the inclined surface of the clamping block 805 will become larger and larger, causing the two clamping blocks 805 to slide towards the inner wall of the inner groove 804. When the two clamping blocks 805 completely slide into the inner part of the inner groove 804, at this time, the knocking block 803 is no longer blocked by the convex block on the inner wall of the concave-convex groove 713. Then, the elastic force of the fifth spring 807 will be quickly released, thereby driving the knocking block 803 to move to the inner wall of the next groove inside the concave-convex groove 713;

[0043] During this process, the two clamping blocks 805 are no longer squeezed, and then they will perform a reset sliding through the elastic force of the inner groove 804. By using the elastic force of the fifth spring 807 to drive the clamping blocks 805 to knock on the inner wall of the concave-convex groove 713, the sampling box 709 will vibrate multiple times during the movement. By vibrating the sampling box 709, micro-cracks will be generated on the contact surface between the soil and core and the sampling box 709, improving the sampling integrity rate of the sampling box 709 for the sampled object.

[0044] Example three, please refer to Figures 1-7 , on the basis of Example two, in this example, a sealing mechanism 9 is provided on the inner wall of the hollow drill bit 5 to automatically seal the sampling port of the sampling box 709 after sampling is completed;

[0045] Furthermore, the sealing mechanism 9 includes a fixing ring 901, and a fixing block 902 is fixedly connected to the side wall of the fixing ring 901. Sixth springs 903 are fixedly connected to both sides of the fixing block 902. The ends of the two sixth springs 903 away from the fixing block 902 are fixedly connected to sealing wall plates 904. Oblique openings 905 are provided at the ends of the two sealing wall plates 904 close to each other. The side of the fixing ring 901 away from the fixing block 902 is fixedly connected to the outer wall of the fixing ring 901. The outer wall of the sealing wall plate 904 is slidably connected to the inner wall of the hollow drill bit 5. The side wall of the sampling box 709 is slidably connected to the inner wall of the through port 10. The sampling port of the sampling box 709 corresponds to the side wall of the oblique opening 905;

[0046] More specifically, when conducting hydrogeological sampling, during the process of driving the sliding block 706 to move by the sliding rod 701, the sliding rod 701 will drive the fixed block 902 to move synchronously through the fixed ring 901. Then, the fixed block 902 will drive the ends of the two sixth springs 903 to move, stretching the two sixth springs 903. Then, the force generated by the stretching of the sixth springs 903 will drive the corresponding sealing wall plates 904 to rotate along the inner wall of the hollow drill bit 5, so that the two sealing wall plates 904 move away from each other. When the gap generated between them is larger than the end of the through port 10, at this time, the sealing wall plates 904 no longer limit the sampling box 709, and then the sampling box 709 will perform the sampling work;

[0047] After the sampling box 709 completes sampling, when controlling the sliding rod 701 to drive the sampling box 709 to move back to the inner wall of the hollow drill bit 5, the sliding rod 701 will squeeze the sixth spring 903 through the fixed block 902. After the sixth spring 903 is squeezed, it will drive the corresponding sealing wall plate 904 to rotate back along the inner wall of the hollow drill bit 5, so as to re-seal the through port 10. The elastic force of the second spring 708 will make the sampling box 709 squeeze against the inner wall of the sealing wall plate 904. At the same time, when the two sealing wall plates 904 are combined together, the groove formed by the two inclined ports 905 will catch the sampling port convex angle of the sampling box 709, further ensuring that the sampling box 709 will not slide and shift on the inner wall of the sealing wall plate 904, so as to ensure the sealing of the inside of the sampling box 709. Then, the driving motor 15 rotates in the reverse direction to drive the hollow drill bit 5 to reset, and then the sampling box 709 can be directly taken out by pushing the sliding rod 701 and pressing the pressure rod 710;

[0048] By automatically sealing the sampled sampling box 709, it is avoided that the sampled substances inside it come into contact with air during the sampling process, resulting in irreversible changes in physical, chemical and biological properties, and causing the subsequent test data to be distorted.

[0049] The working principle of the present invention is as follows: Before conducting hydrogeological sampling, first, the sampling box 709 is slid out along the inner wall of the through port 10 by pushing the sliding rod 701. Then, by pressing the pressing rod 710, the pressing rod 710 slides into the interior of the sliding rod 701. During this process, the third spring 711 is compressed. While the pressing rod 710 is sliding, the inclined surface of the pressing rod 710 squeezes the inclined surface of the inclined block 703 through the inclined surface of the limiting groove 712. After that, the two inclined blocks 703 are displaced in opposite directions, and at the same time, the inclined block 703 drives the limiting rod 704 to move synchronously, causing the first spring 705 to be compressed. When the sliding of the pressing rod 710 is completed, at this time, the two limiting rods 704 are in contact with each other. Then, the sliding block 706 can be placed on the outer wall position of the limiting rod 704 through the card slot 707. At the same time, the sliding block 706 can be controlled to slide along the outer wall of the limiting rod 704 through the card slot 707 to a specified position, so as to control the height of the sampling box 709 inside the hollow drill bit 5 and thus control the depth of subsequent sampling. At the same time, by installing multiple groups of sliding blocks 706 corresponding to multiple specified positions, the depth of multiple sampling positions can be accurately and freely controlled;

[0050] When conducting hydrogeological sampling, during the process of driving the sliding block 706 to move by the sliding rod 701, the sliding rod 701 drives the fixed block 902 to move synchronously through the fixing ring 901. Then, the fixed block 902 drives the ends of the two sixth springs 903 to move, causing the two sixth springs 903 to be stretched. Then, the force generated by the stretching of the sixth spring 903 drives the corresponding sealing wall plate 904 to rotate along the inner wall of the hollow drill bit 5, so that the two sealing wall plates 904 move away from each other. When the gap generated between them is greater than the end of the through port 10, at this time, the sealing wall plate 904 no longer limits the sampling box 709, and then the sampling box 709 will carry out the sampling work;

[0051] After the sampling box 709 has completed sampling, when controlling the sliding rod 701 to drive the sampling box 709 to move back to the inner wall of the hollow drill bit 5, the sliding rod 701 squeezes the sixth spring 903 through the fixed block 902. After the sixth spring 903 is squeezed, it drives the corresponding sealing wall plate 904 to rotate back along the inner wall of the hollow drill bit 5, so as to re-seal the through port 10. The elastic force of the second spring 708 causes the sampling box 709 to be pressed against the inner wall of the sealing wall plate 904. At the same time, when the two sealing wall plates 904 are combined together, the groove formed by the two inclined openings 905 will catch the sampling port convex angle of the sampling box 709, further ensuring that the sampling box 709 will not slide and shift on the inner wall of the sealing wall plate 904, thereby ensuring the sealing performance inside the sampling box 709. After that, the driving motor 15 rotates in the reverse direction to drive the hollow drill bit 5 to return. Then, the sampling box 709 can be directly taken out by pushing the sliding rod 701 and pressing the pressing rod 710.

[0052] It should be noted that the devices in this application are all common devices in the market and can be selected according to needs during specific use. Moreover, the circuit connection relationships of the devices all belong to simple series and parallel connection circuits, and there are no innovation points in the circuit connection part, which can be relatively easily achieved by those skilled in the art and belong to the prior art, so no further elaboration will be made.

[0053] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims.

Claims

1. A multifunctional hydrogeological survey drilling and sampling device, comprising a base (1), characterized in that: Two support frames (2) are fixedly connected to the top of the base (1). Threaded rods (3) are fixedly connected to the inside of the two support frames (2). An installation frame (4) is commonly connected to the outer walls of the two threaded rods (3) by threads. A hollow drill bit (5) is rotatably connected through the inside of the installation frame (4). A sliding groove (6) is provided at the top of the hollow drill bit (5). A sampling mechanism (7) is provided on the inner wall of the sliding groove (6). The sampling mechanism (7) includes a sliding block (706) and a sampling box (709) to freely adjust the depth of multiple sampling positions before sampling. A knocking mechanism (8) is provided on the side wall of the sliding block (706) to knock and vibrate the sampling box (709). A sealing mechanism (9) is provided on the inner wall of the hollow drill bit (5) to automatically seal the sampling port of the sampling box (709) after sampling is completed.

2. The multifunctional hydrogeological survey drilling and sampling device according to claim 1, characterized in that, The sampling mechanism (7) includes a sliding rod (701). A through groove (702) is penetrated and opened on the inner wall of the sliding rod (701). Two inclined blocks (703) are slidably connected to the inner wall of the through groove (702). Limiting rods (704) are fixedly connected to the ends of the two inclined blocks (703). A first spring (705) is fixedly connected to the opposite sides of the two limiting rods (704). A clamping groove (707) is opened on the side wall of the sliding block (706) facing the sliding rod (701). A second spring (708) is fixedly connected to the side of the sliding block (706) away from the sliding rod (701). The side wall of the sampling box (709) is fixedly connected to the end of the second spring (708) away from the sliding block (706). A pressing rod (710) is slidably connected to the inner wall of the sliding rod (701). A third spring (711) is fixedly connected to the end of the pressing rod (710) located inside the sliding rod (701). The end of the third spring (711) away from the pressing rod (710) is fixedly connected to the inside of the sliding rod (701). A limiting groove (712) is opened on the outer wall of the pressing rod (710), and the inner wall of the limiting groove (712) corresponds to the inner wall of the through groove (702). An uneven groove (713) is opened on the side wall of the sampling box (709).

3. The multifunctional hydrogeological survey drilling and sampling device according to claim 2, wherein, The outer wall of the sliding rod (701) is slidably connected to the inner wall of the sliding groove (6). The end of the inclined block (703) away from the limiting rod (704) is slidably connected to the inner wall of the limiting groove (712). The inclined surface at the end of the inclined block (703) corresponds to the inclined surface of the inner wall of the limiting groove (712). The outer wall of the limiting rod (704) is slidably connected to the inner wall of the clamping groove (707). The side wall of the sliding block (706) away from the second spring (708) is slidably connected to the outer wall of the sliding rod (701).

4. A multifunctional hydrogeological investigation drilling and sampling device according to claim 3, characterized in that, The knocking mechanism (8) includes a fixed rod (801), and a guide rod (802) is slidably connected to one end of the fixed rod (801) away from the sliding block (706). One end of the guide rod (802) away from the fixed rod (801) is fixedly connected to a knocking block (803), and an inner groove (804) is formed inside the knocking block (803). Two clamping blocks (805) are slidably connected to the inner wall of the inner groove (804). A fourth spring (806) is fixedly connected between the two clamping blocks (805). A fifth spring (807) is fixedly connected to the side of the knocking block (803) facing the guide rod (802), and one end of the fifth spring (807) away from the knocking block (803) is fixedly connected to the end of the fixed rod (801).

5. A multifunctional hydrogeological investigation drilling and sampling device according to claim 4, characterized in that, The outer wall of the fixed rod (801) is slidably connected to the inner wall of the concave-convex groove (713), and the inclined surface of the outer wall of the clamping block (805) corresponds to the inner wall of the concave-convex groove (713).

6. The multifunctional hydrogeological survey drilling and sampling device according to claim 5, characterized in that, The sealing mechanism (9) includes a fixed ring (901), and a fixed block (902) is fixedly connected to the side wall of the fixed ring (901). Sixth springs (903) are fixedly connected to both sides of the fixed block (902). One end of each of the two sixth springs (903) away from the fixed block (902) is fixedly connected to a sealing wall plate (904), and inclined openings (905) are formed at one ends of the two sealing wall plates (904) close to each other.

7. A multifunctional hydrogeological survey drilling and sampling device according to claim 6, characterized in that, A through opening (10) is formed through the inner wall of the hollow drill bit (5). The side of the fixed ring (901) away from the fixed block (902) is fixedly connected to the outer wall of the fixed ring (901). The outer wall of the sealing wall plate (904) is slidably connected to the inner wall of the hollow drill bit (5). The side wall of the sampling box (709) is slidably connected to the inner wall of the through opening (10), and the sampling port of the sampling box (709) corresponds to the side wall of the inclined opening (905).

8. A multifunctional hydrogeological survey drilling and sampling device according to claim 7, characterized in that, A first gear (11) is fixedly connected to the outer wall of the hollow drill bit (5). A rotating shaft (12) is rotatably connected to the top of the mounting frame (4), and a second gear (13) is fixedly connected to the outer wall of the rotating shaft (12). The inner wall of the teeth of the second gear (13) is meshed with the inner wall of the teeth of the first gear (11). The support frame (2) and the rotating shaft (12) are driven by the belt transmission assembly (14).

9. A multifunctional hydrogeological survey drilling and sampling device according to claim 8, characterized in that, A motor (15) is fixedly installed on the top of the mounting frame (4), and an output shaft of the motor (15) is fixedly connected to a third gear (16). The inner wall of the teeth of the third gear (16) is meshed with the inner wall of the teeth of the first gear (11). A conveying blade (17) is fixedly connected to the outer wall of the hollow drill bit (5).

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