Hydraulic ring geological drilling sampling device and working method thereof

Abstract

The invention relates to a hydraulic ring geological drilling sampling device and a working method thereof. The hydraulic ring geological drilling sampling device comprises a barrel with an opening in the top end, a partition plate is mounted in the barrel, a water pump is mounted on the partition plate, a drainage cavity is formed in the position, located below the partition plate, in the barrel, and a water suction pipe is mounted at the position, located in the drainage cavity, of the bottom end of the water pump. A drain pipe is mounted at the top of the water pump; collection of underground water at different depths in different sampling holes is completed through the device, a drainage space is formed through expansion of a first annular air bag and a second annular air bag, mixed underground water in the depths can be discharged conveniently, and then a sampling space is formed through expansion of a third annular air bag and cooperation with the first annular air bag. The sampling space is used for storing and sampling the seeped underground water, so that the underground water in the sampling space is sampled, the sampling water at different depths is not influenced by the underground water at other depths during sampling, and the sampling accuracy is further ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogeological, engineering geological and environmental geological surveys, and in particular to a hydrogeological drilling sampling device and a working method thereof. Background Technique

[0002] Hydrogeological, engineering geological and environmental geology is the abbreviation of hydrogeology, engineering geology and environmental geology, which is mainly a geological work for investigating and evaluating the geological conditions of underground water resources, engineering construction and natural environment.

[0003] When conducting hydrogeological drilling sampling, during the drilling operation, groundwater at different depths is collected through a sampling device. At this time, groundwater at different depths is mixed in the sampling hole, thus affecting the subsequent test results. At the same time, during the sampling process, after each sampling is completed, the device needs to be removed from the sampling hole for sample storage, which greatly reduces the sampling efficiency. Summary of the Invention

[0004] The problem solved by the present invention is to provide a hydrogeological drilling sampling device and a working method thereof, which solve the technical problems that during hydrogeological drilling sampling, during the drilling operation, groundwater at different depths is collected through a sampling device. At this time, groundwater at different depths is mixed in the sampling hole, thus affecting the subsequent test results. At the same time, during the sampling process, after each sampling is completed, the device needs to be removed from the sampling hole for sample storage, which greatly reduces the sampling efficiency.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A hydrogeological drilling sampling device includes a cylinder with an open top. A partition is installed inside the cylinder, and a water pump is installed on the partition. The lower part of the cylinder inside and below the partition is set as a drainage cavity. The bottom end of the water pump is installed with a suction pipe in the drainage cavity, and the top end of the water pump is installed with a drainage pipe. First, second and third annular air bags are sequentially installed on the outside of the cylinder from top to bottom. A plurality of water tanks communicating with the drainage cavity are opened on the outside of the cylinder, and the bottom side of the water tank is flush with the top side of the second annular air bag. The space between the first annular air bag, the second annular air bag, the cylinder and the inner wall of the sampling hole is set as a drainage space, and the space between the first annular air bag, the third annular air bag, the cylinder and the inner wall of the sampling hole is set as a sampling space. A sampling mechanism is arranged on the outside of the cylinder and in the sampling space.

[0007] Preferably, an air pipe is installed inside the cylinder, and the top end of the air pipe is connected to an air pump. The air pipe is connected to an air pressure cylinder through a connecting pipe.

[0008] Preferably, the air pipe is communicated with the first annular airbag through a first control valve and a first connecting pipe, the air pipe is communicated with the second annular airbag through a second control valve and a second connecting pipe, and the air pipe is communicated with the third annular airbag through a third control valve and a third connecting pipe.

[0009] Preferably, the sampling mechanism includes a bottom ring and a limiting ring installed on the outer side of the cylinder body, and the bottom ring and the limiting ring are located between the second annular airbag and the third annular airbag. A plurality of limiting holes for placing sampling bottles are formed in the limiting ring.

[0010] Preferably, a plurality of first installation grooves are formed at equal angles on the outer side of the top of the cylinder body. A plurality of second installation grooves are formed on the outer side of the cylinder body and between the first annular airbag and the limiting ring. An air cylinder is installed in the first installation groove, and the telescopic end of the air cylinder is located in the second installation groove and connected to the lifting ring.

[0011] Preferably, a rotating ring is rotatably installed on the outer side of the lifting ring through a bearing, and a sampling port is formed in the rotating ring. A sealing gasket is arranged on the bottom side of the rotating ring.

[0012] Preferably, a ring gear is installed on the top side of the lifting ring, a motor is installed on the bottom side of the rotating ring, a rotating gear is installed at the output end of the motor, and the rotating gear meshes with the ring gear.

[0013] A working method of a hydrogeological drilling sampling device, and the specific operation steps of the working method are as follows:

[0014] Step 1: After drilling is completed by a drilling machine, groundwater sampling is carried out through the device. At this time, the sampling bottle is placed in the limiting hole of the limiting ring, and the bottom of the sampling bottle contacts the bottom ring. The air pump works, and at this time, the air cylinder works to drive the lifting ring to move downward until the bottom side of the rotating ring contacts the top of the sampling bottle to realize the sealing of the sampling bottle. At this time, the sampling port on the rotating ring is located between adjacent limiting holes;

[0015] Step 2: Place the whole device into the sampling hole and support it through the drain pipe and the air pipe. When the device reaches the sampling depth, the first control valve and the second control valve are in the open state at this time, and the air pump works to inflate the first annular airbag and the second annular airbag. The first annular airbag and the second annular airbag expand and contact the inner wall of the sampling hole to form a drainage space. At this time, the first control valve and the second control valve are closed, and the groundwater in the drainage space enters the drainage cavity through the water tank. At the same time, the water pump pumps water to discharge the groundwater in the drainage space and the drainage cavity out of the sampling hole. At this time, the third control valve is opened, and the air pump works to inflate the third annular airbag. The third annular airbag expands and contacts the inner wall of the sampling hole. At this time, a sampling space is set between the first annular airbag, the third annular airbag, the cylinder body and the inner wall of the sampling hole. The air cylinder drives the lifting ring to move upward. At the same time, the motor works to drive the rotating gear to rotate, which cooperates with the engaged ring gear to drive the rotating ring to rotate on the lifting ring, and rotates the sampling port of the rotating ring to correspond to the sampling bottle mouth. The air cylinder drives the lifting ring to move downward, and the lifting ring contacts the top of the sampling bottle again, and one of the sampling bottles corresponds to the sampling port. Water continues to seep into the sampling hole until the water level is higher than the sampling bottle mouth. At this time, the collection work of the sampling bottle is completed. The air pump pumps air, the third annular airbag shrinks, and continues to drain water through the water pump. Then, through the rotation of the rotating ring and the lifting, the sealing of all sampling bottles is completed;

[0016] Step 3: Open the first control valve and the second control valve. The first annular airbag and the second annular airbag shrink, and the whole device continues to move downward. Repeat Step 2 to complete the groundwater sampling work at different depths through different sampling bottles.

[0017] The beneficial effects of the present invention are as follows: The device is used to complete the groundwater collection at different depths in different sampling holes. The expansion of the first annular airbag and the second annular airbag forms a drainage space, which is convenient for discharging the mixed groundwater at this depth. Then, the third annular airbag expands and cooperates with the first annular airbag to form a sampling space. The sampling space is used for storing and sampling the exuded groundwater, and then sampling the groundwater in the sampling space, so as to ensure that when sampling, the sampling water at different depths is not affected by the groundwater at other depths, and thus ensure the accuracy of sampling;

[0018] The motor works to drive the rotating gear to rotate, which cooperates with the engaged ring gear to drive the rotating ring to rotate on the lifting ring. At this time, the position of the sampling port is adjusted. When the sampling port corresponds to one of the sampling bottle mouths, the air cylinder drives the lifting ring to move downward, and the lifting ring contacts the top of the sampling bottle, and one of the sampling bottles corresponds to the sampling port, which is convenient for sampling. When the sampling port is between two sampling bottle mouths, at this time, the lifting ring is used to seal all sampling bottles, so as to automatically sample through different sampling bottles at different depths, greatly improving the sampling efficiency. Description of the Drawings

[0019] Figure 1This is the first overall structural schematic diagram of the present invention;

[0020] Figure 2 This is the side view of the whole of the present invention;

[0021] Figure 3 This is the second overall structural schematic diagram of the present invention;

[0022] Figure 4 This is the sectional view of the present invention.

[0023] Legend:

[0024] 1. Cylinder body; 2. Partition board; 3. Water pump; 4. Drainage cavity; 5. Suction pipe; 6. Drain pipe; 7. First annular airbag; 8. Second annular airbag; 9. Third annular airbag; 10. Drainage space; 11. Sampling space; 12. Water tank; 13. Air pipe; 14. First control valve; 15. First connecting pipe; 16. Second control valve; 17. Second connecting pipe; 18. Third control valve; 19. Third connecting pipe; 20. Bottom ring; 21. Limiting ring; 22. Limiting hole; 23. First installation groove; 24. Pneumatic cylinder; 25. Second installation groove; 26. Lifting ring; 27. Rotating ring; 28. Ring teeth; 29. Motor; 30. Rotating teeth; 31. Sampling port. Detailed implementation manners

[0025] 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0026] The following gives specific embodiments.

[0027] Refer to Figures 1 to 4 , a geological drilling and sampling device for hydraulic rings, including a cylinder body 1 with an open top. A partition board 2 is installed inside the cylinder body 1, and a water pump 3 is installed on the partition board 2. The lower part of the cylinder body 1 and below the partition board 2 is set as a drainage cavity 4. The bottom end of the water pump 3 is located in the drainage cavity 4 and is installed with a suction pipe 5, and the top end of the water pump 3 is installed with a drain pipe 6. The first annular airbag 7, the second annular airbag 8, and the third annular airbag 9 are sequentially installed on the outer side of the cylinder body 1 from top to bottom. A plurality of water tanks 12 communicating with the drainage cavity 4 are opened on the outer side of the cylinder body 1, and the bottom side of the water tank 12 is flush with the top side of the second annular airbag 8. The space between the first annular airbag 7, the second annular airbag 8, the cylinder body 1, and the inner wall of the sampling hole is set as a drainage space 10, and the space between the first annular airbag 7, the third annular airbag 9, the cylinder body 1, and the inner wall of the sampling hole is set as a sampling space 11. A sampling mechanism is arranged on the outer side of the cylinder body 1 and within the sampling space 11.

[0028] An air pipe 13 is installed inside the cylinder body 1, and the top end of the air pipe 13 is connected to an air pump. The air pipe 13 is connected to the air pressure cylinder 24 through a connecting pipe. The air pipe 13 is connected to the first annular airbag 7 through a first control valve 14 and a first connecting pipe 15. The air pipe 13 is connected to the second annular airbag 8 through a second control valve 16 and a second connecting pipe 17. The air pipe 13 is connected to the third annular airbag 9 through a third control valve 18 and a third connecting pipe 19. The device is used to collect groundwater at different depths in different sampling holes. The expansion of the first annular airbag 7 and the second annular airbag 8 forms a drainage space 10, which is convenient for discharging the mixed groundwater at this depth. Then, the third annular airbag 9 expands and cooperates with the first annular airbag 7 to form a sampling space 11. The sampling space 11 is used for storing and sampling the exuded groundwater. Then, the groundwater in the sampling space 11 is sampled, so as to ensure that when sampling, the sampling water at different depths is not affected by the groundwater at other depths, and thus ensure the accuracy of sampling.

[0029] The sampling mechanism includes a bottom ring 20 and a limit ring 21 installed outside the cylinder body 1. The bottom ring 20 and the limit ring 21 are located between the second annular airbag 8 and the third annular airbag 9. A number of limit holes 22 for placing sampling bottles are opened on the limit ring 21. A number of first installation grooves 23 are equally angled on the outer side of the top of the cylinder body 1. A number of second installation grooves 25 are opened on the outer side of the cylinder body 1 and between the first annular airbag 7 and the limit ring 21. An air pressure cylinder 24 is installed in the first installation groove 23, and the telescopic end of the air pressure cylinder 24 is located in the second installation groove 25 and connected to a lifting ring 26. A rotating ring 27 is rotatably installed on the outer side of the lifting ring 26 through a bearing, and a sampling port 31 is opened on the rotating ring 27. A sealing gasket is arranged on the bottom side of the rotating ring 27. A ring gear 28 is installed on the top side of the lifting ring 26. A motor 29 is installed on the bottom side of the rotating ring 27. A rotating gear 30 is installed at the output end of the motor 29, and the rotating gear 30 meshes with the ring gear 28. When the motor 29 works, it drives the rotating gear 30 to rotate, which cooperates with the meshing ring gear 28 to drive the rotating ring 27 to rotate on the lifting ring 26. At this time, the position of the sampling port 31 is adjusted. When the sampling port 31 corresponds to one of the sampling bottle mouths, the air pressure cylinder 24 drives the lifting ring 26 to move down, and the lifting ring 26 contacts the top of the sampling bottle, and one of the sampling bottles corresponds to the sampling port 31, which is convenient for sampling. When the sampling port 31 is located between two sampling bottle mouths, at this time, the lifting ring 26 is used to seal all the sampling bottles, so as to automatically sample through different sampling bottles at different depths, greatly improving the sampling efficiency.

[0030] A working method of a hydrogeological drilling sampling device, and the specific operation steps of the working method are as follows:

[0031] Step 1: After drilling is completed by a drilling machine, groundwater sampling is carried out through the device. At this time, the sampling bottle is placed in the limiting hole 22 of the limiting ring 21, and the bottom of the sampling bottle contacts the bottom ring 20. The air pump works, and at this time, the air cylinder 24 works to drive the lifting ring 26 to move downward until the bottom side of the rotating ring 27 contacts the top of the sampling bottle to achieve the sealing of the sampling bottle. At this time, the sampling port 31 on the rotating ring 27 is located between adjacent limiting holes 22;

[0032] Step 2: The whole device is placed into the sampling hole and supported by the drain pipe 6 and the air pipe 13. When the device reaches the sampling depth, the first control valve 14 and the second control valve 16 are in the open state. The air pump works to inflate the first annular airbag 7 and the second annular airbag 8. The first annular airbag 7 and the second annular airbag 8 expand and contact the inner wall of the sampling hole to form a drainage space 10. At this time, the first control valve 14 and the second control valve 16 are closed. The groundwater in the drainage space 10 enters the drainage cavity 4 through the water tank 12. At the same time, the water pump 3 pumps water to drain the groundwater in the drainage space 10 and the drainage cavity 4 out of the sampling hole. At this time, the third control valve 18 is opened, and the air pump works to inflate the third annular airbag 9. The third annular airbag 9 expands and contacts the inner wall of the sampling hole. At this time, a sampling space 11 is set between the first annular airbag 7, the third annular airbag 9, the cylinder body 1 and the inner wall of the sampling hole. The air cylinder 24 drives the lifting ring 26 to move upward, and at the same time, the motor 29 works to drive the rotating gear 30 to rotate, which cooperates with the meshing ring gear 28 to drive the rotating ring 27 to rotate on the lifting ring 26, and rotate the sampling port 31 of the rotating ring 27 to correspond to the sampling bottle mouth. The air cylinder 24 drives the lifting ring 26 to move downward, and the lifting ring 26 contacts the top of the sampling bottle again, and one of the sampling bottles corresponds to the sampling port 31. Water continues to seep into the sampling hole until the water level is higher than the sampling bottle mouth. At this time, the collection work of the sampling bottle is completed. The air pump pumps air, the third annular airbag 9 contracts, and the water is continuously drained through the water pump 3, and then the sealing of all sampling bottles is completed through the rotation and lifting of the rotating ring 27;

[0033] Step 3: Open the first control valve 14 and the second control valve 16. The first annular airbag 7 and the second annular airbag 8 contract, and the whole device continues to move downward. Repeat Step 2 to complete the groundwater sampling work at different depths through different sampling bottles.

[0034] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A hydrogeological drilling sampling device, characterized in that It includes a cylinder body (1) with an open top. A partition plate (2) is installed inside the cylinder body (1), and a water pump (3) is installed on the partition plate (2). The interior of the cylinder body (1) and below the partition plate (2) is set as a drainage chamber (4). The bottom end of the water pump (3) is located in the drainage chamber (4) and is installed with a suction pipe (5). The top end of the water pump (3) is installed with a drainage pipe (6). On the outer side of the cylinder body (1), a first annular airbag (7), a second annular airbag (8), and a third annular airbag (9) are installed in sequence from top to bottom. A plurality of water troughs (12) communicating with the drainage chamber (4) are opened on the outer side of the cylinder body (1), and the bottom side of the water trough (12) is flush with the top side of the second annular airbag (8). The space between the first annular airbag (7), the second annular airbag (8), the cylinder body (1), and the inner wall of the sampling hole is set as a drainage space (10). The space between the first annular airbag (7), the third annular airbag (9), the cylinder body (1), and the inner wall of the sampling hole is set as a sampling space (11). A sampling mechanism is arranged on the outer side of the cylinder body (1) and within the sampling space (11).

2. The hydrogeological, engineering geological and environmental geological drilling and sampling device according to claim 1, characterized in that, An air pipe (13) is installed inside the cylinder body (1), and the top end of the air pipe (13) is connected to an air pump. The air pipe (13) is connected to a pneumatic cylinder (24) through a connecting pipe.

3. A hydrogeological and environmental geological drilling and sampling device according to claim 2, characterized in that, The air pipe (13) is communicated with the first annular airbag (7) through a first control valve (14) and a first connecting pipe (15). The air pipe (13) is communicated with the second annular airbag (8) through a second control valve (16) and a second connecting pipe (17). The air pipe (13) is communicated with the third annular airbag (9) through a third control valve (18) and a third connecting pipe (19).

4. A hydrogeological and engineering geological drilling and sampling device according to claim 3, characterized in that, The sampling mechanism includes a bottom ring (20) and a limit ring (21) installed on the outer side of the cylinder body (1), and the bottom ring (20) and the limit ring (21) are located between the second annular airbag (8) and the third annular airbag (9). A plurality of limit holes (22) for placing sampling bottles are opened on the limit ring (21).

5. The hydrogeological, engineering geological and environmental geological drilling and sampling device according to claim 4, characterized in that, A plurality of first installation grooves (23) are opened on the outer side of the top of the cylinder body (1) at equal angles. A plurality of second installation grooves (25) are opened on the outer side of the cylinder body (1) and between the first annular airbag (7) and the limit ring (21). A pneumatic cylinder (24) is installed in the first installation groove (23), and the telescopic end of the pneumatic cylinder (24) is located in the second installation groove (25) and is connected to a lifting ring (26).

6. The hydrogeological, engineering geological and environmental geological drilling and sampling device according to claim 5, characterized in that, A rotating ring (27) is rotatably installed on the outer side of the lifting ring (26) through a bearing, and a sampling port (31) is opened on the rotating ring (27). A sealing gasket is arranged on the bottom side of the rotating ring (27).

7. The hydrogeological, engineering geological and environmental geological drilling and sampling device according to claim 6, characterized in that, A ring gear (28) is installed on the top side of the lifting ring (26). A motor (29) is installed on the bottom side of the rotating ring (27). A rotating gear (30) is installed at the output end of the motor (29), and the rotating gear (30) meshes with the ring gear (28).

8. The working method of a hydrogeological, engineering geological and environmental geological drilling and sampling device according to claim 7, characterized in that, The specific operation steps of this working method are as follows: Step 1: After drilling is completed by a drilling machine, groundwater sampling is carried out through the device. At this time, the sampling bottle is placed in the limiting hole (22) of the limiting ring (21), and the bottom of the sampling bottle contacts the bottom ring (20). The air pump works, and at this time, the air cylinder (24) works to drive the lifting ring (26) to move downward until the bottom side of the rotating ring (27) contacts the top of the sampling bottle, realizing the sealing of the sampling bottle. At this time, the sampling port (31) on the rotating ring (27) is located between adjacent limiting holes (22). Step 2: The whole device is placed into the sampling hole and supported by the drain pipe (6) and the air pipe (13). When the device reaches the sampling depth, the first control valve (14) and the second control valve (16) are in the open state. The air pump works to inflate the first annular airbag (7) and the second annular airbag (8). The first annular airbag (7) and the second annular airbag (8) expand and contact the inner wall of the sampling hole to form a drainage space (10). At this time, the first control valve (14) and the second control valve (16) are closed. The groundwater in the drainage space (10) enters the drainage cavity (4) through the water tank (12). At the same time, the water pump (3) pumps water to discharge the groundwater in the drainage space (10) and the drainage cavity (4) out of the sampling hole. At this time, the third control valve (18) is opened, and the air pump works to inflate the third annular airbag (9). The third annular airbag (9) expands and contacts the inner wall of the sampling hole. At this time, a sampling space (11) is set between the first annular airbag (7), the third annular airbag (9), the cylinder body (1) and the inner wall of the sampling hole. The air cylinder (24) drives the lifting ring (26) to move upward. At the same time, the motor (29) works to drive the rotating gear (30) to rotate, which cooperates with the meshing ring gear (28) to drive the rotating ring (27) to rotate on the lifting ring (26), rotating the sampling port (31) of the rotating ring (27) to correspond to the sampling bottle mouth. The air cylinder (24) drives the lifting ring (26) to move downward, and the lifting ring (26) contacts the top of the sampling bottle again, and one of the sampling bottles corresponds to the sampling port (31). Water continues to seep into the sampling hole until the water level is higher than the sampling bottle mouth. At this time, the collection work of the sampling bottle is completed. The air pump pumps air, the third annular airbag (9) contracts, and the water is continuously drained through the water pump (3). Then, the sealing of all sampling bottles is completed through the rotation and lifting of the rotating ring (27). Step 3: Open the first control valve (14) and the second control valve (16). The first annular airbag (7) and the second annular airbag (8) contract. The whole device continues to move downward. Repeat Step 2 to complete the groundwater sampling work at different depths through different sampling bottles.

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