Specimen collecting device for hydrogeological test
By designing a hydrogeological test specimen collection device with fixed filter plates, limiting bodies and annular filters, the problems of drill bits being vulnerable to damage, low sampling efficiency and underwater ecological damage in the prior art are solved, and efficient, stable and safe underwater soil collection are achieved.
Patent Information
- Application Number
- CN202510403889.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2025-06-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing underwater soil sampling device is prone to damage to the drill bit due to encountering gravels during the drilling process, the sampling efficiency is low, and it is easy to damage the underwater ecology. The fourth electric telescopic rod has low stability.
A specimen collection device for hydrogeological testing was designed, using a main body plate with a cylindrical structure, with a drilling sampling mechanism inside, including a fixed filter plate, a limiting body, an electric telescopic rod and a balance mechanism. Through an annular filter and a flexible structure, the drill bit is ensured to be in full contact with the soil, prevent impurities from contacting, and improve stability.
It improves drilling efficiency, reduces damage to the bottom ecology, enhances the stability and safety of the device, and ensures the accuracy of the sample.
Smart Images
Figure CN120121345A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of geological specimen collection, and particularly to a specimen collection device for hydrogeological testing. Background Art
[0002] Hydrogeological test sampling generally refers to the sample collection activities carried out during hydrogeological surveys to obtain information such as the material composition, physical properties, and chemical properties of groundwater, soil, or other media. The acquisition of these samples is crucial for understanding the operation of the groundwater system, evaluating water quality, conducting pollution monitoring and remediation, and supporting water resource management decisions. Existing underwater soil sampling devices include a support main body that is dropped to a designated position. Inside the support main body, a drill bit is driven by a motor to drill into the soil, and a receiving groove is opened inside the drill bit to collect samples during the drilling process.
[0003] Since there are many stones mixed in the underwater soil, during the process of the motor driving the drill bit to drill, the drill bit is prone to drill into the stones. When encountering a large stone blockage, in order to ensure the accuracy of the samples in the receiving groove, workers need to lift the device to the water surface, clean the samples in the receiving groove, and then re-sample, resulting in very low sampling efficiency. During the process of the drill bit drilling into the soil, fixed impurities or some organisms in the water are prone to come into contact with the rotating fourth electric telescopic rod, causing damage to the underwater ecology, and the fourth electric telescopic rod is prone to be damaged, with low stability. Summary of the Invention
[0004] The purpose of the present invention is to solve the deficiencies in the background art and propose a specimen collection device for hydrogeological testing.
[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a specimen collection device for hydrogeological testing, including a main body plate with a cylindrical structure. Inside the main body plate, there is a drilling and sampling mechanism for collecting underwater soil. The drilling and sampling mechanism includes a through hole opened at the upper end of the main body plate. Inside the through hole of the main body plate, a first fixed body is rotatably arranged. At the lower end of the first fixed body, a first empty groove is opened. At the upper end of the first empty groove of the first fixed body, a first electric telescopic rod is fixedly connected. The telescopic end of the first electric telescopic rod is fixedly connected with a fixed filter plate. The side surface of the fixed filter plate is fixedly connected with a first limiting body by bolts. At the upper end of the first fixed body, a connecting rope is fixedly connected. A one-way valve is arranged through the upper end of the first fixed body. At the upper end of the main body plate, there is a balance mechanism for attitude adjustment during the falling process of the device. On the side surface of the main body plate, a fixing mechanism for fixing the device is fixedly connected.
[0006] Preferably, the fixed filter plate is a filter screen structure. A receiving groove is formed at the lower end of the first limiting body. The side surface of the first limiting body is slidably matched with the first empty groove. Four second empty grooves are formed at the upper end of the first limiting body and are equally angularly distributed.
[0007] Preferably, first motors are respectively fixedly connected to the upper end of the first limiting body at positions corresponding to the four second empty grooves. Transmission shafts of the four first motors are respectively fixedly connected with fourth electric telescopic rods in the second empty grooves. The side surfaces of the four fourth electric telescopic rods are respectively rotatably matched with the second empty grooves. The lower ends of the four fourth electric telescopic rods are respectively fixedly connected with first pressure sensors. The lower ends of the four first pressure sensors are respectively fixedly connected with drill bits.
[0008] Preferably, a cavity communicating with the receiving groove is formed inside the main body plate. A second motor is fixedly connected above the cavity of the main body plate. A gear is fixedly connected to the transmission shaft end of the second motor in the cavity. An annular rack meshing with the gear is fixedly connected to the side surface of the first fixing body.
[0009] Preferably, a first annular groove is formed at the lower end of the first fixing body. Four second electric telescopic rods are fixedly connected in the first annular groove and are equally angularly distributed. The telescopic ends of the four second electric telescopic rods are fixedly connected with a first fixing ring. The side surface of the first fixing ring is slidably matched with the first annular groove. An annular filter screen is fixedly connected to the lower end of the first fixing ring. The lower end of the annular filter screen is rotatably connected with a second fixing ring. A second annular groove is formed at the lower end of the second fixing ring. A second fixing body is fixedly connected in the second annular groove. The second fixing body is a flexible structure.
[0010] Preferably, a plurality of limiting grooves are formed at the lower end of the second fixing body and are equally angularly distributed. Second pressure sensors are respectively fixedly connected in the plurality of limiting grooves. Springs are respectively fixedly connected to the lower ends of the plurality of second pressure sensors. Top blocks are respectively fixedly connected to the lower ends of the plurality of springs. The side surfaces of the plurality of top blocks are respectively slidably matched with the limiting grooves.
[0011] Preferably, the fixing mechanism includes four hinge blocks fixedly connected to the side surface of the main body plate. Third fixing bodies are respectively rotatably connected to the outer side surfaces of the four hinge blocks. The four third fixing bodies are respectively L-shaped structures. A plurality of symmetrically distributed fixing claws are respectively arranged at the lower ends of the four third fixing bodies.
[0012] Preferably, third empty slots are respectively formed at the lower ends of the four third fixing bodies, third electric telescopic rods are respectively and fixedly connected in the four third empty slots, the telescopic ends of the four third electric telescopic rods are respectively fixedly connected with fixed claws, a level meter is fixedly connected to the upper end of the main body plate, and the level meter is connected to the controller and the four third electric telescopic rods through electric wires.
[0013] Compared with the prior art, the present invention has the following beneficial effects: The four second electric telescopic rods drive the first fixing ring to move downward, and the first fixing ring drives the second fixing ring to move downward through the annular filter screen. When the second pressure sensor detects that the top block contacts the underwater soil, the second electric telescopic rod stops extending. Since the second fixing body is a flexible structure, under the detection of several second pressure sensors, it can be ensured that the lower end of the second fixing body is in full contact with the uneven underwater soil. At this time, the annular filter screen completely covers the sampling area to be drilled, preventing fish, shrimps and some fixed impurities from contacting the fourth electric telescopic rod during the process of drilling and sampling soil, improving the safety of the device and reducing the damage to the underwater ecosystem. By completely drilling the sampling area with the four drill bits, it is possible to prevent drilling into hard objects during the process of drilling and sampling soil, improving the drilling efficiency. At this time, when the second motor is started, the first electric telescopic rod is extended at the same time. The first electric telescopic rod drives the first limiting body to rotate and move downward at the same time. At this time, the drill bit at the lower end of the first limiting body can drill the soil. Since the fixed filter plate is a filter screen structure, the water in the accommodating groove is discharged through the fixed filter plate and then discharged from the device through the one-way valve, while the taken sample is retained in the accommodating groove. Description of the Drawings
[0014] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a sectional view of the overall structure of the present invention; Figure 3 is a sectional view of a partial structure of the present invention; Figure 4 is the present invention Figure 2 enlarged view of part A; Figure 5 is the present invention Figure 2 enlarged view of part B; Figure 6 is the present invention Figure 2 enlarged view of part C; Figure 7 is the present invention Figure 3 enlarged view of part D; Figure 8 is the present invention Figure 3 enlarged view of part E; Figure 9 is the present invention Figure 3Enlarged view at F
[0015] 1. Main body plate; 2. Balancing mechanism; 3. Drilling and sampling mechanism; 4. Fixing mechanism; 5. Connecting rope; 31. First fixing body; 32. First empty slot; 33. First electric telescopic rod; 34. First annular slot; 35. Second electric telescopic rod; 36. Fixed filter plate; 37. First limiting body; 38. First motor; 39. Annular filter screen; 310. Second empty slot; 311. Fourth electric telescopic rod; 312. Accommodating groove; 313. Second motor; 314. Cavity; 315. Gear; 316. Annular rack; 317. First fixing ring; 318. Through hole; 319. Drill bit; 320. First pressure sensor; 321. Second fixing ring; 322. Second annular slot; 323. Second fixing body; 324. Limiting slot; 325. Second pressure sensor; 326. Spring; 327. Top block; 328. Check valve; 41. Hinge block; 42. Third fixing body; 43. Fixing claw; 44. Third empty slot; 45. Third electric telescopic rod; 46. Level gauge. Detailed implementation mode
[0016] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations.
[0017] Please refer to Figures 1 - 9 , a specimen collection device for hydrogeological testing, including a main body plate 1 with a cylindrical structure, and a drilling and sampling mechanism 3 for collecting underwater soil is arranged inside the main body plate 1.
[0018] In this embodiment, the drilling and sampling mechanism 3 includes a through hole 318 opened at the upper end of the main body plate 1. A first fixing body 31 is rotatably arranged in the through hole 318 of the main body plate 1. A first empty slot 32 is opened at the lower end of the first fixing body 31. A first electric telescopic rod 33 is fixedly connected to the upper end of the first empty slot 32 of the first fixing body 31. A fixed filter plate 36 is fixedly connected to the telescopic end of the first electric telescopic rod 33. The side surface of the fixed filter plate 36 is fixedly connected with a first limiting body 37 by bolts. A connecting rope 5 is fixedly connected to the upper end of the first fixing body 31. A check valve 328 is arranged through the upper end of the first fixing body 31. A balancing mechanism 2 for attitude adjustment is arranged at the upper end of the main body plate 1 during the falling process of the device.
[0019] The fixed filter plate 36 is a filter screen structure. An accommodating groove 312 is opened at the lower end of the first limiting body 37. The side surface of the first limiting body 37 is slidably matched with the first empty slot 32. Four equally angularly distributed second empty slots 310 are opened at the upper end of the first limiting body 37.
[0020] At the upper ends of the first limit bodies 37, first motors 38 are fixedly connected respectively at positions corresponding to the four second empty slots 310. At the transmission shaft ends of the four first motors 38, fourth electric telescopic rods 311 are fixedly connected respectively in the second empty slots 310. The sides of the four fourth electric telescopic rods 311 are rotatably matched with the second empty slots 310. At the lower ends of the four fourth electric telescopic rods 311, first pressure sensors 320 are fixedly connected respectively. At the lower ends of the four first pressure sensors 320, drill bits 319 are fixedly connected respectively.
[0021] A cavity 314 communicating with the accommodation groove 312 is formed inside the main body plate 1. Above the cavity 314, a second motor 313 is fixedly connected to the main body plate 1. At the transmission shaft end of the second motor 313, a gear 315 is fixedly connected inside the cavity 314. On the side of the first fixing body 31, an annular rack 316 meshing with the gear 315 is fixedly connected.
[0022] At the lower end of the first fixing body 31, a first annular groove 34 is formed. Inside the first annular groove 34, four second electric telescopic rods 35 are fixedly connected at equal angles. At the telescopic ends of the four second electric telescopic rods 35, a first fixing ring 317 is fixedly connected. The side of the first fixing ring 317 is slidably matched with the first annular groove 34. At the lower end of the first fixing ring 317, an annular filter screen 39 is fixedly connected. At the lower end of the annular filter screen 39, a second fixing ring 321 is rotatably connected. At the lower end of the second fixing ring 321, a second annular groove 322 is formed. Inside the second annular groove 322, a second fixing body 323 is fixedly connected. The second fixing body 323 is of a flexible structure.
[0023] At the lower end of the second fixing body 323, a number of limiting grooves 324 are formed at equal angles. Inside the number of limiting grooves 324, second pressure sensors 325 are fixedly connected respectively. At the lower ends of the number of second pressure sensors 325, springs 326 are fixedly connected respectively. At the lower ends of the number of springs 326, top blocks 327 are fixedly connected respectively. The sides of the number of top blocks 327 are slidably matched with the limiting grooves 324.
[0024] Specifically, the second motor 313 drives the gear 315 to rotate. The gear 315 drives the annular rack 316 to rotate through meshing. The annular rack 316 drives the first fixing body 31 to rotate. At the same time, the first electric telescopic rod 33 is extended. The first electric telescopic rod 33 drives the lower end of the first limit body 37 to move to a position close to the underwater soil. Then the second motor 313 stops rotating. The four first motors 38 are started. At the same time, the four fourth electric telescopic rods 311 are extended. At this time, the drill bit 319 moves downward while rotating, and drills on the edge of the area where sampling is required.
[0025] In this embodiment, a fixing mechanism 4 for fixing the device is fixedly connected to the side surface of the main body plate 1.
[0026] The fixing mechanism 4 includes four hinge blocks 41 fixedly connected to the side surface of the main body plate 1. The outer side surfaces of the four hinge blocks 41 are respectively rotatably connected to third fixing bodies 42. The four third fixing bodies 42 are respectively of an L-shaped structure. A plurality of symmetrically distributed fixing claws 43 are respectively arranged at the lower ends of the four third fixing bodies 42.
[0027] Third empty slots 44 are respectively opened at the lower ends of the four third fixing bodies 42. Third electric telescopic rods 45 are respectively fixedly connected in the four third empty slots 44. The telescopic ends of the four third electric telescopic rods 45 are respectively fixedly connected to the fixing claws 43. A level 46 is fixedly connected to the upper end of the main body plate 1. The level 46 is connected to the controller and the four third electric telescopic rods 45 through wires.
[0028] Specifically, the balance mechanism 2 and the level 46 are connected by wires. During the process of the overall device falling, the balance mechanism 2 controls the main body plate 1 to always maintain a horizontal state. Through this, the four third electric telescopic rods 45 extend. When the device falls to the bottom of the water, driven by gravity, the device has a relatively fast descending speed, driving the four fixing claws 43 to insert into the bottom of the water, thereby firmly fixing the device.
[0029] When in use, clean the receiving groove 312 in the first limiting body 37 to prevent impurities from entering. Then, throw the entire device from the water surface above the predetermined sampling area. At the same time of throwing, at this time, the balance mechanism 2 and the level 46 are connected by wires. During the process of the overall device falling, the balance mechanism 2 controls the main body plate 1 to always maintain a horizontal state. Through this, the four third electric telescopic rods 45 extend. When the device falls to the bottom of the water, driven by gravity, the device has a relatively fast descending speed, driving the four fixing claws 43 to insert into the bottom of the water, thereby firmly fixing the device and preventing the device from shifting during the sampling process, improving the stability of the device.
[0030] After the main board 1 is fixed by four third fixing bodies 42, the four second electric telescopic rods 35 are simultaneously extended. The four second electric telescopic rods 35 drive the first fixing ring 317 to move downward. The first fixing ring 317 drives the second fixing ring 321 to move downward through the annular filter screen 39. When the second pressure sensor 325 detects that the top block 327 contacts the underwater soil, the second electric telescopic rod 35 stops extending. Since the second fixing body 323 is a flexible structure, under the detection of a plurality of second pressure sensors 325, it can be ensured that the lower end of the second fixing body 323 is in full contact with the uneven underwater soil. At this time, the annular filter screen 39 completely covers the sampling area that needs to be drilled, preventing fish, shrimps and some fixed impurities from contacting the fourth electric telescopic rod 311 during the process of drilling and sampling soil, improving the safety of the device and reducing the damage to the underwater ecosystem.
[0031] When the annular filter screen 39 completely covers the sampling area, the second motor 313 is started at this time. The second motor 313 drives the gear 315 to rotate. The gear 315 meshes with and drives the annular rack 316 to rotate. The annular rack 316 drives the first fixing body 31 to rotate. At the same time, the first electric telescopic rod 33 is extended. The first electric telescopic rod 33 drives the lower end of the first limiting body 37 to move to a position close to the bottom soil. After that, the second motor 313 stops rotating, and the four first motors 38 are started. At the same time, the four fourth electric telescopic rods 311 are extended. At this time, the drill bit 319 moves downward while rotating, and drills on the side of the area to be sampled. During the drilling, the first pressure sensor 320 can detect whether there are stones blocking. When the drilling is completed, the second motor 313 drives the four drill bits 319 to rotate to another position and continue drilling until the side of the sampling area is completely drilled. Then, the four fourth electric telescopic rods 311 contract, driving the drill bit 319 to move to a position close to the first limiting body 37. By completely drilling the side of the sampling area with the four drill bits 319, it is possible to prevent drilling into hard objects during the process of drilling and taking soil samples, and improve the drilling efficiency. At this time, when the second motor 313 is started, the first electric telescopic rod 33 is extended. The first electric telescopic rod 33 drives the first limiting body 37 to rotate and move downward at the same time. At this time, the drill bit 319 at the lower end of the first limiting body 37 can drill the soil. Since the fixed filter plate 36 is a filter screen structure, the water in the receiving groove 312 is discharged through the fixed filter plate 36 and then discharged from the device through the one-way valve 328, while the taken sample is retained in the receiving groove 312. When the drilling is completed, the four third electric telescopic rods 45 are contracted at this time. The third electric telescopic rods 45 drive the fixed claws 43 to separate from the soil. Then, people pull the device up through the connecting rope 5. During the rising process of the device, since the receiving groove 312 in the first limiting body 37 communicates with the outside through the filter holes of the fixed filter plate 36 and the one-way valve 328, the one-way valve 328 can prevent water from flowing into the receiving groove 312 at this time, thereby preventing the sample in the receiving groove 312 from overflowing under the impact of water flow during the rising process. Moreover, the bottom end of the sample in the receiving groove 312 does not have a sample function, only plays a sealing function for the overall sampling, ensuring that the inside of the sample does not come into contact with water flow and providing the accuracy of taking out the sample.
[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.
Claims
1. A specimen collection device for hydrogeological testing, comprising a main body plate (1) of a cylindrical structure, characterized in that: A drilling sampling mechanism (3) for collecting underwater soil is arranged on the inner side of the main body plate (1), the drilling sampling mechanism (3) comprising a through hole (318) provided at the upper end of the main body plate (1), a first fixed body (31) being rotatably arranged in the through hole (318) of the main body plate (1), a first empty slot (32) being provided at the lower end of the first fixed body (31), a first electric telescopic rod (33) being fixedly connected to the upper end of the first empty slot (32) of the first fixed body (31), and the first electric telescopic rod (33) being rotatably arranged in the through hole (318) of the main body plate (1). The telescopic end of the main body plate (3) is fixedly connected to a fixed filter plate (36), the side of the fixed filter plate (36) is fixedly connected to a first limiter (37) via bolts, the upper end of the first fixed body (31) is fixedly connected to a connecting rope (5), the upper end of the first fixed body (31) is penetrated by a one-way valve (328), the upper end of the main body plate (1) is provided with a balancing mechanism (2) for adjusting the posture of the device during the falling process, and the side of the main body plate (1) is fixedly connected to a fixing mechanism (4) for fixing the device.
2. A specimen collection device for hydrogeological testing according to claim 1, characterized in that: The fixed filter plate (36) is a filter screen structure; a receiving groove (312) is provided at the lower end of the first limiting body (37); a side surface of the first limiting body (37) is slidably matched with the first empty groove (32); and four second empty grooves (310) are respectively provided at the upper end of the first limiting body (37) and are distributed at equal angles.
3. A specimen collection device for hydrogeological testing according to claim 2, characterized in that: The upper end of the first limiting body (37) is respectively fixedly connected to a first motor (38) at a position corresponding to the four second empty slots (310); the transmission shaft ends of the four first motors (38) are respectively fixedly connected to fourth electric telescopic rods (311) in the second empty slots (310); the side surfaces of the four fourth electric telescopic rods (311) are respectively rotatably matched with the second empty slots (310); the lower ends of the four fourth electric telescopic rods (311) are respectively fixedly connected to a first pressure sensor (320); and the lower ends of the four first pressure sensors (320) are respectively fixedly connected to a drill bit (319).
4. A specimen collection device for hydrogeological testing according to claim 1, characterized in that: A cavity (314) communicating with the accommodating groove (312) is provided on the inner side of the main body plate (1); a second motor (313) is fixedly connected to the main body plate (1) above the cavity (314); a gear (315) is fixedly connected to the transmission shaft end of the second motor (313) in the cavity (314); and an annular rack (316) meshing with the gear (315) is fixedly connected to the side surface of the first fixed body (31).
5. The sample collection device for hydrogeological testing according to claim 1, characterized in that: A first annular groove (34) is provided at the lower end of the first fixed body (31), four second electric telescopic rods (35) with equal angles are fixedly connected in the first annular groove (34), the telescopic ends of the four second electric telescopic rods (35) are fixedly connected to a first fixed ring (317), the side surface of the first fixed ring (317) is slidably matched with the first annular groove (34), an annular filter screen (39) is fixedly connected to the lower end of the first fixed ring (317), the lower end of the annular filter screen (39) is rotatably connected to a second fixed ring (321), a second annular groove (322) is provided at the lower end of the second fixed ring (321), a second fixed body (323) is fixedly connected in the second annular groove (322), and the second fixed body (323) is a flexible structure.
6. A specimen collection device for hydrogeological testing according to claim 5, characterized in that: The lower end of the second fixed body (323) is provided with a plurality of limit grooves (324) with equal angles, a plurality of the limit grooves (324) are respectively fixedly connected with second pressure sensors (325), a plurality of the lower ends of the second pressure sensors (325) are respectively fixedly connected with springs (326), a plurality of the lower ends of the springs (326) are respectively fixedly connected with top blocks (327), and the side surfaces of the plurality of top blocks (327) are respectively slidably matched with the limit grooves (324).
7. The sample collection device for hydrogeological testing according to claim 1, characterized in that: The fixing mechanism (4) comprises four hinge blocks (41) fixedly connected to the side of the main body plate (1), the outer side surfaces of the four hinge blocks (41) are rotatably connected to third fixing bodies (42), the four third fixing bodies (42) are respectively L-shaped structures, and the lower ends of the four third fixing bodies (42) are respectively provided with a plurality of symmetrically distributed fixing claws (43).
8. A specimen collection device for hydrogeological testing according to claim 7, characterized in that: The lower ends of the four third fixed bodies (42) are respectively provided with third empty slots (44), and third electric telescopic rods (45) are respectively fixedly connected in the four third empty slots (44), and the telescopic ends of the four third electric telescopic rods (45) are respectively fixedly connected to the fixed claws (43), and the upper end of the main body plate (1) is fixedly connected to a level meter (46), and the level meter (46) is connected to the controller and the four third electric telescopic rods (45) through electric wires.