Multifunctional hydrogeological survey drilling sampling device

Abstract

The invention discloses a multifunctional hydrogeological survey drilling sampling device, and relates to the technical field of hydrogeological sampling devices. The device comprises a vehicle body mechanism and a drilling sampling mechanism, the vehicle body mechanism is provided with a rotating telescopic rod, the drilling sampling mechanism comprises a rack, the rack is provided with a first driving mechanism, the first driving mechanism is in transmission connection with a drilling sampling rod, a drilling head is arranged at the end of the drilling sampling rod, and a sampling cavity is formed in the drilling sampling rod; the end part of the drilling head is provided with a sampling port communicated with the sampling chamber, the sampling chamber is provided with a switch ball for sealing the sampling port, the drilling sampling rod is provided with a second driving mechanism for driving the switch ball to rotate, the switch ball is provided with a first through hole communicated with the sampling port and the sampling chamber, and a piston is arranged in the sampling chamber. The multifunctional hydrogeological survey drilling sampling device has the beneficial effects of drill hole protection, good sample quality and small survey result error in a mode of sampling immediately without taking a drill rod after drilling.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogeological sampling devices, and in particular to a multifunctional hydrogeological survey drilling sampling device. Background Art

[0002] Hydrogeology is a branch of geology, referring to the various changes and movements of groundwater in nature. It mainly studies the distribution and formation of groundwater, the physical properties and chemical composition of groundwater, groundwater resources and their rational use, the adverse effects of groundwater on engineering construction and mining and their prevention and control, etc. Groundwater is an important research object of hydrogeology, so sampling and analysis of groundwater is also an important means of investigation.

[0003] The existing hydrogeological borehole sampling device generally drills a hole first, removes the drill rod after drilling to a specified depth, and then inserts a pumping pipe into the borehole to extract groundwater at a specified depth. The sampling effect of this borehole is not good because the soil or sand dug out when the drill rod is removed easily hinders the insertion of the pumping pipe, and after the drill rod is removed, water sources at different depths after drilling are easily mixed together, resulting in a large deviation between the actual sample and the expected sample, which is easy to cause errors in the survey results.

[0004] Therefore, the prior art needs to be improved. Summary of the invention

[0005] The technical problem to be solved by the present invention is that drilling sampling is prone to clogging and the sample quality is poor. The purpose is to provide a multifunctional hydrogeological survey drilling sampling device, which adopts the corresponding technical scheme and takes samples immediately after drilling without removing the drill rod. It has the beneficial effects of protecting the borehole, improving the sample quality and reducing the error of the survey result.

[0006] The present invention is achieved through the following technical solutions: A multifunctional hydrogeological survey drilling sampling device, comprising a body mechanism and a drilling sampling mechanism, The body mechanism is provided with a rotating telescopic rod, the drilling sampling mechanism includes a frame rotatably connected to the rotating telescopic rod, the frame is provided with a first driving mechanism, and the first driving mechanism is drivingly connected to the drilling sampling rod. A drilling probe is provided at the end of the drilling sampling rod, a sampling chamber is provided inside the drilling sampling rod, a sampling port connected to the sampling chamber is provided at the end of the drilling probe, a switch ball is provided in the sampling chamber to seal the sampling port, the drilling sampling rod is provided with a second driving mechanism for driving the switch ball to rotate, the switch ball is provided with a first through hole connecting the sampling port and the sampling chamber, a piston is provided in the sampling chamber, the piston divides the sampling chamber into an upper chamber and a lower chamber, the air pressure in the upper chamber is less than the air pressure in the lower chamber, and the air pressure in the lower chamber is less than the water pressure.

[0007] Furthermore, in the present invention, the second driving mechanism includes a stepping motor, and rotating shafts are fixedly provided on both sides of the switch ball, the rotating shafts are rotationally connected to the side walls of the sampling chamber, and the rotating shafts are transmission-connected to the stepping motor.

[0008] Furthermore, in the present invention, the stepper motor is provided with a first transmission wheel, the rotating shaft is provided with a second transmission wheel, and the second transmission wheel and the first transmission wheel are provided with a toothed belt transmission.

[0009] Furthermore, in the present invention, a telescopic chamber communicating with the first through hole is provided inside the switch ball, the telescopic chamber is provided with a plug and a spring for pushing the plug outward, and the plug is provided with a second through hole.

[0010] Furthermore, in the present invention, the plug is configured in a hemispherical shape.

[0011] Furthermore, in the present invention, the diameter of the plug is the same as the diameter of the sampling port.

[0012] Furthermore, in the present invention, a slide groove is provided on the side wall of the telescopic chamber, and a slider inserted into the slide groove is provided on the side of the plug.

[0013] Furthermore, in the present invention, the sampling port is provided with a sealing ring contacting the switch ball, and a lubricating layer is provided on the surface of the switch ball.

[0014] Furthermore, in the present invention, the drilling sampling rod is provided with a sampling hole communicating with the sampling chamber.

[0015] Furthermore, in the present invention, the above-mentioned vehicle body mechanism is provided with wheels for walking.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects: In the present invention, the multifunctional hydrogeological survey drilling sampling device mainly consists of a body mechanism and a drilling sampling mechanism. The body mechanism is used for movement, and the drilling sampling mechanism is used for drilling and sampling. It has rich functions and better use effect. During drilling, the first driving mechanism drives the drilling sampling rod to drill downward. After drilling to the specified depth, the second driving mechanism drives the switch ball to rotate. After the switch ball rotates, the sampling port and the lower chamber are connected. Since the water pressure is greater than the air pressure of the lower chamber, and the air pressure of the lower chamber is greater than the air pressure of the upper chamber, the piston will gradually move up, and then the water will enter the lower chamber to complete the sampling work. After the sampling is completed, the second driving mechanism drives the switch ball to rotate in the opposite direction. After the switch ball rotates, the connection state between the sampling port and the lower chamber is disconnected. Finally, the drilling sampling rod is taken out from the borehole to complete the drilling sampling work. After drilling, sampling can be done without taking out the drill rod, which avoids the collapse and blockage of the borehole, and also avoids the mixing of different water samples, protects the borehole, and the sample quality is better, and then the survey results are more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative work. In the drawings: Figure 1 A schematic diagram of a multifunctional hydrogeological survey drilling sampling device of the present invention; Figure 2 A side schematic diagram of a multifunctional hydrogeological survey drilling sampling device of the present invention; Figure 3 is a schematic diagram of a drilling sampling rod of the present invention; Figure 4 for Figure 3 The enlarged cross-sectional diagram at A in the middle; Figure 5 This is a schematic diagram of the switch ball of the present invention before sampling; Figure 6 This is a schematic diagram of the switch ball after sampling of the present invention.

[0018] Markings and corresponding parts names in the accompanying drawings: 1-body mechanism, 101-rotating telescopic rod, 2-drilling sampling mechanism, 201-frame, 202-first driving mechanism, 3-drilling sampling rod, 301-drilling head, 302-sampling chamber, 3021-upper chamber, 3022-lower chamber, 303-sampling port, 4-switch ball, 401-first through hole, 402-telescopic chamber, 403-spring, 404-top, 405-second through hole, 406-rotating shaft, 4061-second transmission wheel, 5-second driving mechanism, 501-first transmission wheel, 6-piston. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the embodiments and drawings. The schematic implementation mode of the present invention and its description are only used to explain the present invention and are not intended to limit the present invention. The following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that similar numbers and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, and it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0021] Example, combined with Figure 1-Figure 6 As shown, a multifunctional hydrogeological survey drilling sampling device according to an embodiment of the present invention is shown, and the specific structure is described as follows.

[0022] In this embodiment, the multifunctional hydrogeological survey drilling and sampling device mainly includes two parts: a body mechanism 1 and a drilling and sampling mechanism 2. The body mechanism 1 is used to realize the movement of the multifunctional hydrogeological survey drilling and sampling device, and the drilling and sampling mechanism 2 is used to realize the drilling and sampling of the multifunctional hydrogeological survey drilling and sampling device. It has diverse functions and is more widely used.

[0023] Further, combined with Figure 1 and Figure 2As shown, the body mechanism 1 is provided with wheels for walking at the bottom, and the power mechanism of the body mechanism 1 (such as a motor for a vehicle) drives the wheels to rotate, so as to realize the movement of the body mechanism 1. The body mechanism 1 is provided with two rotating telescopic rods 101, and the top of the rotating telescopic rods 101 is rotatably connected to the drilling sampling mechanism 2. Figure 1 As shown, the telescopic rod 101 is rotated and retracted, and the drilling sampling mechanism 2 is placed on the top of the body mechanism 1; when drilling is required, Figure 2 As shown, the telescopic rod 101 is rotated to extend, and the drilling sampling mechanism 2 is moved to the front of the vehicle body mechanism 1 and maintained in a vertical state to facilitate downward drilling.

[0024] In some implementations of this embodiment, Figure 1 and Figure 2 As shown, the drilling sampling mechanism 2 includes a frame 201, which is a long metal shell, and the frame 201 is connected to the rotating telescopic rod 101, and the frame 201 provides an installation position for other parts. The first driving mechanism 202 adopts the motor and reducer of the prior art, and the first driving mechanism 202 is installed on the top of the frame 201. The drilling sampling rod 3 is connected to the output shaft of the motor and the reducer. After the drilling sampling rod 3 is driven, it drills downward to perform drilling work.

[0025] Further, combined with Figure 2 , Figure 3 and Figure 4 As shown, a drilling head 301 is installed at the bottom of the drilling sampling rod 3 to play a role in drilling. A sampling chamber 302 is provided inside the drilling sampling rod 3, and the sampling chamber 302 is used to collect hydrogeological samples. A sampling port 303 is provided at the bottom end surface of the drilling head 301, and the sampling port 303 is connected to the sampling chamber 302, and the diameter of the sampling port 303 is smaller than the diameter of the sampling chamber 302.

[0026] In some implementations of this embodiment, Figure 4 As shown, the switch ball 4 is installed inside the sampling chamber 302, and a circular groove for supporting the switch ball 4 is provided at the top of the sampling port 303. Rotating shafts 406 are fixedly installed on both sides of the switch ball 4. The rotating shafts 406 are inserted into the side walls of the sampling chamber 302, and both the rotating shafts 406 and the switch ball 4 can rotate.

[0027] Furthermore, a second driving mechanism 5 (preferably a stepping motor) is fixedly installed in the sampling chamber 302, a first transmission wheel 501 is installed on the main shaft of the second driving mechanism 5, a second transmission wheel 4061 is installed on the rotating shaft 406, the second transmission wheel 4061 and the first transmission wheel 501 are connected by a toothed belt, and the second driving mechanism 5 drives the switch ball 4 to rotate forward or reverse (reverse).

[0028] In some implementations of this embodiment, Figure 3 and Figure 4 As shown, a piston 6 is installed inside the sampling chamber 302, and the piston 6 divides the sampling chamber 302 into an upper chamber 3021 and a lower chamber 3022. Sampling holes are provided on the side wall of the sampling chamber 302, one sampling hole is located at the top of the sampling chamber 302, and the other sampling hole is located at the bottom of the sampling chamber 302. When no sampling is performed, the sampling holes are blocked by a stopcock, and the air pressure of the upper chamber 3021 and the lower chamber 3022 can also be adjusted through the sampling holes.

[0029] Further, combined with Figure 4 and Figure 5 As shown, in order to remove the dirt in the sampling port 303 during sampling, a plug 404 is installed in the switch ball 4, a telescopic chamber 402 is provided in the switch ball 4, the telescopic chamber 402 is connected to the first through hole 401 at the top, and the plug 404 is installed inside the telescopic chamber 402. In addition, a spring 403 is also installed in the telescopic chamber 402, the top end of the spring 403 is pressed against the top wall of the telescopic chamber 402, and the bottom end of the spring 403 is pressed against the top of the plug 404, and the compressed plug 404 can be pushed outwards, and after being pushed, Figure 5 As shown, the top head 404 protrudes from the bottom of the switch ball 4 and is inserted into the sampling port 303 to push out the soil in the sampling port 303 .

[0030] It should be noted that a slide groove is provided on the inner wall of the telescopic chamber 402, and sliders are installed on both sides of the top head 404. The sliders are inserted into the slide groove and can slide up and down along the slide groove. Figure 5 As shown in , the slider slides to the lowest point of the slide slot. Figure 6 As shown, at this time, the slider slides to the highest point of the slide groove, and the slider and the slide groove cooperate to limit the travel of the head 404.

[0031] And, combined with Figure 4 and Figure 5 As shown, the diameter of the mandrel 404 is the same as the diameter of the sampling port 303, and can push more soil.

[0032] In some implementations of this embodiment, the top 404 is in a hemispherical shape. The advantage is that the hemispherical shape is relatively smooth, such as Figure 5 As shown, when the switch ball 4 rotates, the head 404 can be automatically retracted into the telescopic chamber 402, and the use effect is better.

[0033] In some implementations of this embodiment, Figure 4 As shown, a sealing ring is installed in the circular groove at the top of the sampling port 303, and a lubricating layer is provided on the surface of the switch ball 4, that is, lubricating oil is coated on the surface of the switch ball 4 to achieve a better sealing effect. The lubricating oil reduces the influence of the sealing ring on the rotation of the switch ball 4.

[0034] The working principle of the present invention is as follows: During drilling, the first driving mechanism 202 drives the drilling sampling rod 3 to drill downward. After drilling to the specified depth, the second driving mechanism 5 drives the switch ball 4 to rotate. After the switch ball 4 rotates, the top 404 is aligned with the sampling port 303. The spring 403 drives the top 404 to move downward to push out the soil in the sampling port 303. The sampling port 303 and the lower chamber 3022 are connected through the first through hole 401, the second through hole 405 in the top 404, and the telescopic chamber 402. Since the water pressure is greater than the air pressure of the lower chamber 3022, and the air pressure of the lower chamber 3022 is greater than the air pressure of the upper chamber 3021, the piston 6 will gradually move upward, and then the water will enter the lower chamber 3022 to complete the sampling work. After the sampling is completed, the second driving mechanism 5 drives the switch ball 4 to rotate in the opposite direction. After the switch ball 4 rotates, the top 404 and the sampling port 303 are staggered, disconnecting the connection between the sampling port 303 and the lower chamber 3022. Finally, the drilling sampling rod 3 is taken out from the borehole to complete the drilling sampling work. Sampling can be done without taking out the drill rod after drilling, which avoids the collapse and blockage of the borehole and the mixing of different water samples, protects the borehole, and improves the sample quality, so that the survey results are more accurate.

[0035] In summary, the embodiment of the present invention provides a multifunctional hydrogeological survey drilling sampling device, including a body mechanism 1 and a drilling sampling mechanism 2, the body mechanism 1 is provided with a rotating telescopic rod 101, the drilling sampling mechanism 2 includes a frame 201 rotatably connected to the rotating telescopic rod 101, the frame 201 is provided with a first driving mechanism 202, the first driving mechanism 202 is drivingly connected to a drilling sampling rod 3, the end of the drilling sampling rod 3 is provided with a drilling probe 301, the interior of the drilling sampling rod 3 is provided with a sampling chamber 302, and the end of the drilling probe 301 is provided with The sampling port 303 is connected to the sampling chamber 302, the sampling chamber 302 is provided with a switch ball 4 that seals the sampling port 303, the drilling sampling rod 3 is provided with a second driving mechanism 5 that drives the switch ball 4 to rotate, the switch ball 4 is provided with a first through hole 401 that connects the sampling port 303 and the sampling chamber 302, a piston 6 is provided in the sampling chamber 302, the piston 6 divides the sampling chamber 302 into an upper chamber 3021 and a lower chamber 3022, the air pressure of the upper chamber 3021 is less than the air pressure of the lower chamber 3022, and the air pressure of the lower chamber 3022 is less than the water pressure. The second driving mechanism 5 includes a stepping motor, and rotating shafts 406 are fixedly provided on both sides of the switch ball 4, the rotating shaft 406 is rotatably connected to the side wall of the sampling chamber 302, and the rotating shaft 406 is drivingly connected to the stepping motor. The stepper motor is provided with a first transmission wheel 501, the rotating shaft 406 is provided with a second transmission wheel 4061, and the second transmission wheel 4061 and the first transmission wheel 501 are provided with a toothed belt transmission. The interior of the switch ball 4 is provided with a telescopic chamber 402 connected to the first through hole 401, the telescopic chamber 402 is provided with a head 404 and a spring 403 for pushing the head 404 outward, and the head 404 is provided with a second through hole 405. The head 404 is configured in a hemispherical shape. The diameter of the head 404 is the same as the diameter of the sampling port 303. The side wall of the telescopic chamber 402 is provided with a slide groove, and the side of the head 404 is provided with a slider inserted into the slide groove. The sampling port 303 is provided with a sealing ring contacting the switch ball 4, and a lubricating layer is provided on the surface of the switch ball 4. The drilling sampling rod 3 is provided with a sampling hole connected to the sampling chamber 302. The body mechanism 1 is provided with wheels for walking. Therefore, the multifunctional hydrogeological survey drilling sampling device provided by the embodiment of the present invention has the beneficial effects of protecting the borehole, improving the sample quality, and reducing the error of the survey result.

[0036] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multifunctional hydrogeological survey drilling sampling device, characterized in that: It comprises a body mechanism (1) and a drilling sampling mechanism (2), The body mechanism (1) is provided with a rotating telescopic rod (101), the drilling sampling mechanism (2) comprises a frame (201) rotatably connected to the rotating telescopic rod (101), the frame (201) is provided with a first driving mechanism (202), the first driving mechanism (202) is drivingly connected to the drilling sampling rod (3), The end of the drilling sampling rod (3) is provided with a drilling probe (301), a sampling chamber (302) is provided inside the drilling sampling rod (3), the end of the drilling probe (301) is provided with a sampling port (303) communicating with the sampling chamber (302), the sampling chamber (302) is provided with a switch ball (4) sealing the sampling port (303), and the drilling sampling rod (3) is provided with a second driving mechanism (5) for driving the switch ball (4) to rotate. The switch ball (4) is provided with a first through hole (401) communicating with the sampling port (303) and the sampling chamber (302); a piston (6) is provided in the sampling chamber (302); the piston (6) divides the sampling chamber (302) into an upper chamber (3021) and a lower chamber (3022); the air pressure of the upper chamber (3021) is lower than the air pressure of the lower chamber (3022); and the air pressure of the lower chamber (3022) is lower than the water pressure.

2. The multifunctional hydrogeological survey drilling sampling device according to claim 1 is characterized in that: The second driving mechanism (5) comprises a stepping motor, and rotating shafts (406) are fixedly provided on both sides of the switch ball (4), the rotating shafts (406) are rotatably connected to the side walls of the sampling chamber (302), and the rotating shafts (406) are drivingly connected to the stepping motor.

3. The multifunctional hydrogeological survey drilling sampling device according to claim 2 is characterized in that: The stepper motor is provided with a first transmission wheel (501), the rotating shaft (406) is provided with a second transmission wheel (4061), and the second transmission wheel (4061) and the first transmission wheel (501) are provided with a toothed belt drive.

4. The multifunctional hydrogeological survey drilling sampling device according to claim 1 is characterized in that: The switch ball (4) is provided with a telescopic chamber (402) in communication with the first through hole (401), the telescopic chamber (402) is provided with a pin (404) and a spring (403) for pushing the pin (404) outwards, and the pin (404) is provided with a second through hole (405).

5. The multifunctional hydrogeological survey drilling sampling device according to claim 4 is characterized in that: The top head (404) is configured in a hemispherical shape.

6. The multifunctional hydrogeological survey drilling sampling device according to claim 5 is characterized in that: The diameter of the top head (404) is the same as the diameter of the sampling port (303).

7. The multifunctional hydrogeological survey drilling sampling device according to claim 4 is characterized in that: A sliding groove is provided on the side wall of the telescopic chamber (402), and a sliding block inserted into the sliding groove is provided on the side of the top head (404).

8. The multifunctional hydrogeological survey drilling sampling device according to claim 1 is characterized in that: The sampling port (303) is provided with a sealing ring that contacts the switch ball (4), and a lubricating layer is provided on the surface of the switch ball (4).

9. The multifunctional hydrogeological survey drilling sampling device according to any one of claims 1 to 8, characterized in that: The drilling sampling rod (3) is provided with a sampling hole communicated with the sampling chamber (302).

10. The multifunctional hydrogeological survey drilling sampling device according to any one of claims 1 to 8, characterized in that: The vehicle body structure (1) is provided with wheels for walking.

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