CN215178880U - Shallow fluid sampling device - Google Patents
Shallow fluid sampling device Download PDFInfo
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- CN215178880U CN215178880U CN202120667046.4U CN202120667046U CN215178880U CN 215178880 U CN215178880 U CN 215178880U CN 202120667046 U CN202120667046 U CN 202120667046U CN 215178880 U CN215178880 U CN 215178880U
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Abstract
A shallow fluid sampling device comprises a drilling part, a soil sample collecting part and a fluid collecting part; the soil sample collecting part and the fluid collecting part are both arranged in the drilling part; the drilling portion comprises a drill rod and a drill bit; the inner wall of the upper end of the drill bit and the outer wall of the lower end of the drill rod form threaded fit; the drill bit is hollow, and the lower end of the drill bit is conical; the soil sample collecting part comprises an impactor and a soil sample collecting mechanism; the impactor is arranged at the upper end of the soil sample collecting mechanism, and the soil sample collecting mechanism is arranged in the drilling part. The utility model provides high efficiency and the precision of shallow fluid sampling.
Description
Technical Field
The utility model relates to a sampling device, especially a sampling device for gathering shallow fluid belongs to shallow geology sample technical field.
Background
In order to comprehensively understand the geological structure, underground water or underground gas is collected while underground soil samples are collected, and the content and transfer condition of certain elements are determined by analyzing the underground water and the gas; at present, two common collection modes for underground water and gas are provided, one mode is that a hole with a larger diameter is drilled through a shallow drill, then a target layer is separated through clay or cement, and then a detection instrument is put into the hole to collect underground in-situ water or in-situ gas, the method has larger early investment, is inconvenient for arranging the drilled holes in a large area, and has the advantages that the sample mixing is avoided, and the dynamic change of underground fluid can be monitored in real time; the other method is to insert the capillary probe into the soil layer for a certain depth and then collect the in-situ fluid, and the method has the advantages of high sampling efficiency, limited sampling depth and small sample amount, and is not beneficial to analysis; therefore, a sampling device capable of efficiently and accurately acquiring data is needed to ensure the smooth geological exploration operation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's not enough, provide a shallow fluid sampling device, it can guarantee the precision of gathering when guaranteeing high-efficient collection operation.
The problem is solved through following technical scheme:
a shallow fluid sampling device comprises a drilling part, a soil sample collecting part and a fluid collecting part;
the soil sample collecting part and the fluid collecting part are both arranged in the drilling part;
the drilling portion comprises a drill rod and a drill bit; the inner wall of the upper end of the drill bit and the outer wall of the lower end of the drill rod form threaded fit; a second limiting step is arranged at the upper part of the inner wall of the drill rod, and the inner diameter of the inner wall of the drill rod at the upper end of the second limiting step is larger than that of the inner wall of the drill rod at the lower end of the second limiting step; the drill bit is hollow, and the lower end of the drill bit is conical; the inner wall of the drill bit is provided with a first limiting step, and the inner diameter of the inner wall of the drill bit at the upper end of the first limiting step is larger than that of the inner wall of the drill bit at the lower end of the first limiting step;
the soil sample collecting part comprises an impactor and a soil sample collecting mechanism; the impactor is arranged at the upper end of the soil sample collecting mechanism, and the soil sample collecting mechanism is arranged in the drilling part;
the fluid collecting part comprises an air exhaust pipeline, a vacuum pump, an upper self-sealing joint, a central pipe, a lower self-sealing joint, a reducing joint, a fluid inner pipe and a one-way negative pressure filter valve;
the upper end port of the air exhaust pipeline is connected with a vacuum pump, and the inner wall of the lower end of the air exhaust pipeline is in threaded fit connection with the outer wall of the upper end of the upper self-sealing joint; the inner wall of the lower end of the upper self-sealing joint is in threaded fit connection with the outer wall of the upper end of the central tube; the inner wall of the lower end of the central tube and the outer wall of the upper end of the lower self-sealing joint form threaded fit connection; the outer wall of the lower end of the lower self-sealing joint is in threaded fit connection with the inner wall of the upper end of the reducer union; the outer wall of the lower end of the reducing joint is in threaded fit connection with the inner wall of the upper end of the fluid inner pipe; the outer diameter of the fluid inner pipe is smaller than the inner diameter of the inner wall of the lower end of the drill rod; the lower end face of the fluid inner pipe is pressed on the first limiting step; the upper end of the outer wall of the one-way negative pressure filter valve is in threaded fit connection with the lower end of the inner wall of the fluid inner pipe.
In the shallow fluid sampling device, the soil sample collecting mechanism comprises a hanger, a connecting rod and a soil sample inner tube;
the outer wall of the lower end of the impactor is in threaded fit connection with the inner wall of the upper end of the drill rod; the sitting and hanging device comprises a hollow disc and a sitting and hanging barrel; the inner diameter of the sitting and hanging barrel is equal to the diameter of the inner hole of the hollow disc, and the outer diameter of the sitting and hanging barrel is smaller than the diameter of the circumference of the outer wall of the hollow disc; the upper end of the sitting and hanging barrel is vertically connected to the round hole of the lower end face of the hollow disc; the circumferential diameter of the outer wall of the hollow disc is equal to the inner diameter of the inner wall of the drill rod at the upper end of the second limiting step, and the lower end face of the hollow disc is in contact pressure with the second limiting step; the connecting rod is shaped as a round tube with a thin upper part and a thick lower part; the outer wall of the upper end of the connecting rod is in threaded fit connection with the inner wall of the lower end of the sitting and hanging barrel; the inner tube of the soil sample is cylindrical, and the inner wall of the upper end of the inner tube of the soil sample is in threaded fit connection with the outer wall of the lower end of the connecting rod; the inner diameter of the connecting rod is equal to the inner diameter of the inner wall of the drill bit at the lower end of the first limiting step, and the outer diameter of the soil sample inner tube is smaller than the inner diameter of the inner wall at the lower end of the drill rod; the lower end face of the soil sample inner tube is pressed on the first limiting step.
The shallow fluid sampling device is additionally provided with a sealing part; the sealing part comprises an inflation joint, a sealing air bag, an inflation tube and an inflation piece; the sealing air bag is a spherical hollow air bag, and the central tube vertically penetrates through the spherical center of the sealing air bag; the sealed air bag is provided with an inflation joint which is communicated with the inner periphery and the outer periphery of the sealed air bag; the inflation piece is connected with an air inlet of the inflation connector through an inflation pipe.
In the shallow fluid sampling device, the fluid inner tube is a circular tube made of transparent PC material.
The utility model discloses a soil sample collection part and fluid collection part are used with the cooperation of drilling into the part in turn, have improved the collection work efficiency and the precision of underground soil sample and fluid sample effectively, have ensured the quality of geological exploration operation, have avoided the inefficiency problem with high costs that underground fluid collection method brought in the past.
Drawings
FIG. 1 is a schematic structural view of a soil sample collection part of the present invention;
fig. 2 is a schematic structural view of the fluid collecting part of the present invention.
The list of labels in the figure is: 1. the device comprises a drilling part, 1-1 drill rod, 1-2 drill bits, 1-3 first limiting steps, 1-4 second limiting steps, 2 soil sample collecting part, 2-1 impactor, 2-2 hanger, 2-3 connecting rods, 2-4 soil sample inner tubes, 3 fluid collecting part, 3-1 air exhaust pipeline, 3-2 vacuum pump, 3-3 upper self-sealing joint, 3-4 central tube, 3-5 lower self-sealing joint, 3-6 reducing joint, 3-7 fluid inner tubes, 3-8 one-way negative pressure filter valve, 4 sealing part, 4-1 inflation joint, 4-2 sealing air bag, 4-3 inflation tube and 4-4 inflation piece.
Detailed Description
Referring to fig. 1 and 2, the present invention comprises a drilling portion 1, a soil sample collecting portion 2 and a fluid collecting portion 3; the drilling part 1 is used for drilling underground, so that the soil sample collecting part 2 and the fluid collecting part 3 are arranged on the ground for collection;
the soil sample collecting part 2 and the fluid collecting part 3 are both arranged in the drilling part 1;
the drilling part 1 comprises a drill rod 1-1 and a drill bit 1-2; the inner wall of the upper end of the drill bit 1-2 is in threaded fit with the outer wall of the lower end of the drill rod 1-1; a second limiting step 1-4 is arranged at the upper part of the inner wall of the drill rod 1-1, and the inner diameter of the inner wall of the drill rod 1-1 at the upper end of the second limiting step 1-4 is larger than that of the inner wall of the drill rod 1-1 at the lower end of the second limiting step 1-4; the drill bit 1-2 is hollow, and the lower end of the drill bit 1-2 is conical; the inner wall of the drill bit 1-2 is provided with a first limit step 1-3, and the inner diameter of the inner wall of the drill bit 1-2 at the upper end of the first limit step 1-3 is larger than that of the inner wall of the drill bit 1-2 at the lower end of the first limit step 1-3; the tapered drill bit 1-2 is able to more easily drill into the earth formation.
The soil sample collecting part 2 comprises an impactor 2-1 and a soil sample collecting mechanism; the impactor 2-1 is arranged at the upper end of the soil sample collecting mechanism, and the soil sample collecting mechanism is arranged in the drilling part 1; the impactor 2-1 applies downward axial impact forces of a certain frequency, which are transmitted to the drill bit 1-2 through the drill rod 1-1, thereby causing the drill bit 1-2 to drill deep into the ground.
The fluid collecting part 3 comprises an air exhaust pipeline 3-1, a vacuum pump 3-2, an upper self-sealing joint 3-3, a central pipe 3-4, a lower self-sealing joint 3-5, a reducer union 3-6, a fluid inner pipe 3-7 and a one-way negative pressure filter valve 3-8;
the upper end port of the air exhaust pipeline 3-1 is connected with a vacuum pump 3-2, and the inner wall of the lower end of the air exhaust pipeline 3-1 is in threaded fit connection with the outer wall of the upper end of the upper self-sealing joint 3-3; the inner wall of the lower end of the upper self-sealing joint 3-3 is in threaded fit connection with the outer wall of the upper end of the central tube 3-4; the inner wall of the lower end of the central tube 3-4 is in threaded fit connection with the outer wall of the upper end of the lower self-sealing joint 3-5; the outer wall of the lower end of the lower self-sealing joint 3-5 is in threaded fit connection with the inner wall of the upper end of the reducer union 3-6; the outer wall of the lower end of the reducing joint 3-6 is in threaded fit connection with the inner wall of the upper end of the fluid inner pipe 3-7; the outer diameter of the fluid inner pipe 3-7 is smaller than the inner diameter of the inner wall of the lower end of the drill rod 1-1; the lower end face of the fluid inner pipe 3-7 is pressed on the first limiting step 1-3; the upper end of the outer wall of the one-way negative pressure filter valve 3-8 is in threaded fit connection with the lower end of the inner wall of the fluid inner pipe 3-7; by starting the vacuum pump 3-2, negative pressure is generated in the fluid inner tube 3-7, and the fluid at the bottom end is sucked into the fluid inner tube 3-7, so that the purpose of collecting a fluid sample is achieved.
The soil sample collecting mechanism comprises a sitting hanger 2-2, a connecting rod 2-3 and a soil sample inner tube 2-4;
the outer wall of the lower end of the impactor 2-1 is in threaded fit connection with the inner wall of the upper end of the drill rod 1-1; the sitting and hanging device 2-2 comprises a hollow disc and a sitting and hanging barrel; the inner diameter of the sitting and hanging barrel is equal to the diameter of the inner hole of the hollow disc, and the outer diameter of the sitting and hanging barrel is smaller than the diameter of the circumference of the outer wall of the hollow disc; the upper end of the sitting and hanging barrel is vertically connected to the round hole of the lower end face of the hollow disc; the circumferential diameter of the outer wall of the hollow disc is equal to the inner diameter of the inner wall of the drill rod 1-1 at the upper end of the second limiting step 1-4, and the lower end face of the hollow disc is in contact pressure with the second limiting step 1-4; the connecting rod 2-3 is a round tube with a thin upper part and a thick lower part; the outer wall of the upper end of the connecting rod 2-3 is in threaded fit connection with the inner wall of the lower end of the sitting and hanging barrel; the soil sample inner tube 2-4 is cylindrical, and the inner wall of the upper end of the soil sample inner tube 2-4 is in threaded fit connection with the outer wall of the lower end of the connecting rod 2-3; the inner diameter of the connecting rod 2-3 is equal to the inner diameter of the inner wall of the drill bit 1-2 at the lower end of the first limiting step 1-3, and the outer diameter of the soil sample inner tube 2-4 is smaller than the inner diameter of the inner wall at the lower end of the drill rod 1-1; the lower end face of the soil sample inner tube 2-4 is pressed on the first limiting step 1-3; after the soil sample enters the soil sample inner tube 2-4, the whole soil sample collecting mechanism can be lifted out of the ground only by lifting the sitting hanger 2-2, so that the operation steps are greatly simplified.
In order to avoid the influence of air leakage on the negative pressure in the fluid inner tubes 3-7, a sealing part 4 is additionally arranged; the sealing part 4 comprises an inflation connector 4-1, a sealing air bag 4-2, an inflation tube 4-3 and an inflation piece 4-4; the sealed air bag 4-2 is a spherical hollow air bag, and the central tube 3-4 vertically penetrates through the spherical center of the sealed air bag 4-2; the sealed air bag 4-2 is provided with an inflation connector 4-1, and the inflation connector 4-1 is communicated with the inner periphery and the outer periphery of the sealed air bag 4-2; the inflation piece 4-4 is connected with an air inlet of the inflation joint 4-1 through an inflation tube 4-3; after the fluid collecting part 3 is arranged, the inflating part 4-4 is started to inflate the sealing air bag 4-2, so that the sealing air bag 4-2 plugs the cavity of the drill rod 1-1, and the air tightness of the drill rod is greatly improved.
The fluid inner pipe 3-7 is a round pipe made of transparent PC materials, and the transparent fluid inner pipe 3-7 can help workers to visually observe the fluid condition inside the fluid inner pipe.
The sampling device comprises the following operation steps:
arranging a soil sample collecting part 2 into a drilling part 1, starting an impactor 2-1, applying axial impact force with a certain frequency to a drill rod 1-1 downwards by the impactor 2-1, enabling a drill bit 1-2 below the drill rod 1-1 to drill downwards, enabling a soil sample on a drilling path of the drill bit 1-2 to enter a soil sample collecting mechanism, and after the drill bit 1-2 reaches a specified depth, lifting the whole soil sample collecting mechanism out of the drill rod 1-1 through a hanger 2-2; after the soil sample collecting mechanism is lifted out, the fluid collecting part 3 needs to be placed in the drilling part 1; after the fluid collecting part 3 and the sealing part 4 are assembled, the fluid collecting part is placed into the drilling part 1, and the sealing air bag 4-2 is inflated through the inflating part 4-4, so that the sealing air bag 4-2 is expanded until the sealing air bag 4-2 blocks the annular space at the upper end of the drill rod 1-1; then starting the vacuum pump 3-2 to enable the interior of the fluid inner tube 3-7 to form a vacuum state, so that the fluid enters the fluid inner tube 3-7, and after the fluid is collected, hanging out the fluid collecting part 3 and the sealing part 4; and then the soil sample collection part 2 is placed into the drilling part 1, the downward deep excavation sampling is continued, after the soil sample collection of the next layer of geology is finished, the fluid collection part 3 and the sealing part 4 are placed again for fluid sampling, until the soil samples and the fluid samples of all the target geological layers are completely collected, the collection part in the drilling part 1 is lifted out, and then the drilling part 1 is lifted out.
Claims (4)
1. A shallow fluid sampling device, characterized by: comprises a drilling part (1), a soil sample collecting part (2) and a fluid collecting part (3);
the soil sample collecting part (2) and the fluid collecting part (3) are both arranged in the drilling part (1);
the drilling part (1) comprises a drill rod (1-1) and a drill bit (1-2); the inner wall of the upper end of the drill bit (1-2) is in threaded fit with the outer wall of the lower end of the drill rod (1-1); a second limiting step (1-4) is arranged at the upper part of the inner wall of the drill rod (1-1), and the inner diameter of the inner wall of the drill rod (1-1) at the upper end of the second limiting step (1-4) is larger than that of the inner wall of the drill rod (1-1) at the lower end of the second limiting step (1-4); the drill bit (1-2) is hollow, and the lower end of the drill bit (1-2) is conical; the inner wall of the drill bit (1-2) is provided with a first limiting step (1-3), and the inner diameter of the inner wall of the drill bit (1-2) at the upper end of the first limiting step (1-3) is larger than that of the inner wall of the drill bit (1-2) at the lower end of the first limiting step (1-3);
the soil sample collecting part (2) comprises an impactor (2-1) and a soil sample collecting mechanism; the impactor (2-1) is arranged at the upper end of the soil sample collecting mechanism, and the soil sample collecting mechanism is arranged in the drilling part (1);
the fluid collection part (3) comprises an air extraction pipeline (3-1), a vacuum pump (3-2), an upper self-sealing joint (3-3), a central pipe (3-4), a lower self-sealing joint (3-5), a reducing joint (3-6), a fluid inner pipe (3-7) and a one-way negative pressure filter valve (3-8);
the upper end port of the air exhaust pipeline (3-1) is connected with a vacuum pump (3-2), and the inner wall of the lower end of the air exhaust pipeline (3-1) is in threaded fit connection with the outer wall of the upper end of the upper self-sealing joint (3-3); the inner wall of the lower end of the upper self-sealing joint (3-3) is in threaded fit connection with the outer wall of the upper end of the central tube (3-4); the inner wall of the lower end of the central tube (3-4) is in threaded fit connection with the outer wall of the upper end of the lower self-sealing joint (3-5); the outer wall of the lower end of the lower self-sealing joint (3-5) is in threaded fit connection with the inner wall of the upper end of the reducer union (3-6); the outer wall of the lower end of the reducing joint (3-6) is in threaded fit connection with the inner wall of the upper end of the fluid inner pipe (3-7); the outer diameter of the fluid inner pipe (3-7) is smaller than the inner diameter of the inner wall of the lower end of the drill rod (1-1); the lower end face of the fluid inner pipe (3-7) is pressed on the first limiting step (1-3); the upper end of the outer wall of the one-way negative pressure filter valve (3-8) is in threaded fit connection with the lower end of the inner wall of the fluid inner pipe (3-7).
2. The superficial fluid sampling device of claim 1 wherein: the soil sample collecting mechanism comprises a sitting hanger (2-2), a connecting rod (2-3) and a soil sample inner tube (2-4);
the outer wall of the lower end of the impactor (2-1) is in threaded fit connection with the inner wall of the upper end of the drill rod (1-1); the sitting and hanging device (2-2) comprises a hollow disc and a sitting and hanging barrel; the inner diameter of the sitting and hanging barrel is equal to the diameter of the inner hole of the hollow disc, and the outer diameter of the sitting and hanging barrel is smaller than the diameter of the circumference of the outer wall of the hollow disc; the upper end of the sitting and hanging barrel is vertically connected to the round hole of the lower end face of the hollow disc; the circumferential diameter of the outer wall of the hollow disc is equal to the inner diameter of the inner wall of the drill rod (1-1) at the upper end of the second limiting step (1-4), and the lower end face of the hollow disc is pressed on the second limiting step (1-4); the connecting rod (2-3) is in a circular tube with a thin upper part and a thick lower part; the outer wall of the upper end of the connecting rod (2-3) is in threaded fit connection with the inner wall of the lower end of the sitting and hanging barrel; the soil sample inner tube (2-4) is cylindrical, and the inner wall of the upper end of the soil sample inner tube (2-4) is in threaded fit connection with the outer wall of the lower end of the connecting rod (2-3); the inner diameter of the connecting rod (2-3) is equal to the inner diameter of the inner wall of the drill bit (1-2) at the lower end of the first limiting step (1-3), and the outer diameter of the soil sample inner tube (2-4) is smaller than the inner diameter of the inner wall at the lower end of the drill rod (1-1); the lower end face of the soil sample inner tube (2-4) is pressed on the first limiting step (1-3).
3. The superficial fluid sampling device of claim 2, wherein: a sealing part (4) is additionally arranged; the sealing part (4) comprises an inflation connector (4-1), a sealing air bag (4-2), an inflation tube (4-3) and an inflation piece (4-4); the sealing air bag (4-2) is a spherical hollow air bag, and the central tube (3-4) vertically penetrates through the spherical center of the sealing air bag (4-2); the sealed air bag (4-2) is provided with an inflation connector (4-1), and the inflation connector (4-1) is communicated with the inner periphery and the outer periphery of the sealed air bag (4-2); the inflation piece (4-4) is connected with the air inlet of the inflation joint (4-1) through an inflation tube (4-3).
4. The superficial fluid sampling device of claim 3 wherein: the fluid inner pipe (3-7) is a round pipe made of transparent PC materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120667046.4U CN215178880U (en) | 2021-03-30 | 2021-03-30 | Shallow fluid sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120667046.4U CN215178880U (en) | 2021-03-30 | 2021-03-30 | Shallow fluid sampling device |
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| Publication Number | Publication Date |
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| CN215178880U true CN215178880U (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120667046.4U Active CN215178880U (en) | 2021-03-30 | 2021-03-30 | Shallow fluid sampling device |
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| CN (1) | CN215178880U (en) |
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2021
- 2021-03-30 CN CN202120667046.4U patent/CN215178880U/en active Active
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