Drilling sampling device for water conservancy and environmental geological survey

Abstract

The present invention discloses a drilling sampling device for water conservancy and environmental geological survey, comprising a bracket, a fixed cylinder fixed on one side of the bracket, a plurality of sampling cylinders nested in sequence arranged in the fixed cylinder, a rotating rod connected to the center of the innermost sampling cylinder, the rotating rod connected to the bracket through a lifting rod, and a motor connected to the top of the rotating rod. Compared with the prior art, the present invention innovates in multi-layer nesting design, fully automated operation, leakage prevention, multifunctional design, etc., to meet the continuously improved demand for the accuracy and comprehensiveness of survey data.

Description

Technical Field

[0001] The invention relates to the technical field of geological sample collection, in particular to a drilling sampling device used for water conservancy and environmental geological survey. Background Art

[0002] Geological exploration is an important activity to understand underground structures, rock properties, underground resource distribution, etc. In geological exploration, drilling sampling devices are a common way to obtain samples of underground rock formations.

[0003] Many existing geological exploration drilling devices use single-layer sampling tubes, which limits the ability to obtain multi-layer depth samples in one hole, which may result in the loss of important geological information in deep layers during the exploration process. Some geological exploration devices still require manual operation, resulting in a lack of accuracy and efficiency in the collection process. Manual collection is easily restricted for operations in deep layers or complex geological conditions. Some existing sampling devices may have leakage problems during the sampling process, which may result in the loss of samples.

[0004] Therefore, it is necessary to provide a drilling sampling device for water conservancy and environmental geological survey to solve the problems raised in the above background technology. Summary of the invention

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a drilling sampling device for water conservancy and environmental geological survey, comprising a bracket, a fixed cylinder is fixed on one side of the bracket, a plurality of sampling cylinders nested in sequence are arranged in the fixed cylinder, a rotating rod is connected to the center of the innermost sampling cylinder, the rotating rod is connected to the bracket through a lifting rod, and a motor is connected above the rotating rod.

[0006] Furthermore, preferably, a hollow drill is provided at the lower end of each sampling tube.

[0007] Further, as a preference, the bottom of the rotating rod penetrates to below the innermost sampling tube, and a center drill is fixed to the bottom of the rotating rod.

[0008] Further, as a preference, the rotating rod is a hollow drill rod, the upper end of which can be connected to a water pump.

[0009] Furthermore, preferably, the sampling tube is a hollow double-layer structure consisting of an outer tube and an inner tube, a plurality of vertical through grooves are opened on the side wall of the outer tube, and a vertical scraper is arranged in each of the through grooves.

[0010] Further, as a preference, a plurality of connecting ribs are provided in the gap between the outer cylinder and the inner cylinder corresponding to each scraper blade, one end of the connecting rib is fixed to the back side of the corresponding scraper blade, and the other end is rotatably connected to the side wall of the inner cylinder through a rotating shaft.

[0011] Further, as a preference, one side of the connecting rib away from the scraper penetrates to the inner wall of the inner tube, and the side is an inclined surface.

[0012] Further, preferably, a plurality of protrusions are distributed on the outer side surface and the inclined surface of the scraper.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The device uses multiple sampling tubes for layer-by-layer sampling, realizing the function of collecting samples layer by layer, enabling geological surveyors to obtain more comprehensive stratigraphic information from different depths, improving the accuracy and pertinence of sampling.

[0015] Through the design of the multi-layer drill bit structure, as the outer collection tube is separated, the diameter of the multi-layer drill bit structure gradually decreases, ensuring that the opening of the multi-layer drill bit structure fits closely with the outer wall of the corresponding collection tube, avoiding the problem of the scraper being unable to effectively contact the rock formation due to the opening being too large, and improving the efficiency and quality of sampling.

[0016] The bottom of the rotating rod is connected to a water pump, which can remove groundwater before sampling. This helps prevent the sample from containing too much water, reduces the risk of leakage, and ensures dryness and stability during the sampling process.

[0017] The design of the scraper and connecting ribs ensures the airtightness during the sampling and lifting process to prevent sample leakage. The configuration of the connecting ribs enables the scraper to scrape samples at a specific position, ensuring the accuracy and precision of sampling.

[0018] Through the coordinated action of the motor, rotating rod and lifting rod, the collection process is automated, which improves the convenience and accuracy of the operation and reduces the labor burden of geological survey personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of a drilling sampling device used for water conservancy and environmental geological survey;

[0020] Figure 2 It is a schematic diagram of the structure inside the sampling tube;

[0021] Figure 3 It is a schematic diagram of the structure of the scraper closing;

[0022] Figure 4 It is a schematic diagram of the structure with the scraper opened;

[0023] Figure 5 It is a schematic diagram of the structure of the scraper;

[0024] In the figure: 1, bracket; 2, fixed tube; 3, sampling tube; 31, outer tube; 32, inner tube; 4, hollow drill; 5, center drill; 6, rotating rod; 7, lifting rod; 8, motor; 9, scraper; 10, connecting rib; 11, rotating shaft; 12, inclined surface; 13, bump. DETAILED DESCRIPTION

[0025] See also Figure 1 In an embodiment of the present invention, a drilling sampling device for water conservancy and environmental geological survey includes a bracket 1, a fixed tube 2 is fixed on one side of the bracket 1, and a plurality of sampling tubes 3 nested in sequence are arranged in the fixed tube 2, and a rotating rod 6 is connected to the center of the innermost sampling tube 3, and the rotating rod 6 is connected to the bracket 1 through a lifting rod 7, and a motor 8 is connected above the rotating rod 6. By rotating the rotating rod 6 and pressing down the lifting rod 7, the sampling tube 3 can be lowered and drilled into the formation to perform sampling operations. The multi-layer nested design of the sampling tube 3 allows samples to be obtained progressively layer by layer, so that geological survey personnel can obtain more comprehensive formation information from different depths, which is of great significance for analyzing underground structures, rock formation properties, and possible resource distribution.

[0026] In this embodiment, a hollow drill 4 is provided at the lower end of each sampling tube 3. When each sampling tube 3 is nested with each other, the hollow drills 4 of each layer of sampling tubes 3 are sequentially distributed up and down, ensuring that each sampling tube 3 has drilling capability.

[0027] In this embodiment, the bottom of the rotating rod 6 penetrates below the innermost sampling tube 3, and a center drill 5 is fixed to the bottom of the rotating rod 6. The center drill 5 and the hollow drills 4 distributed up and down form a multi-layer drill structure, and as the outer sampling tube 3 is separated, the diameter of the multi-layer drill structure can also be reduced, ensuring that the opening of the multi-layer drill structure fits the outer wall of the corresponding sampling tube 3, so that the scraper 9 can scrape the side wall of the rock formation, and avoiding the scraper 9 being unable to contact the side wall of the rock formation due to the opening being too large.

[0028] In this embodiment, the rotating rod 6 is a hollow drill rod, and its upper end can be connected to a pump. Since the bottom of the rotating rod 6 is at the lowest end, the pump can be used to pump out groundwater when the sampling tube 3 is drilled into the ground, so as to avoid leakage caused by too high water content in the sample.

[0029] See also Figure 2 In this embodiment, the sampling tube 3 is a hollow double-layer structure consisting of an outer tube 31 and an inner tube 32. The side wall of the outer tube 31 is provided with a plurality of vertical through grooves, and a vertical scraper 9 is arranged in each of the through grooves. When the sampling tube 3 rotates, the scraper 9 can scrape the rock samples in the formation so that the samples are accommodated in the gap between the outer tube 31 and the inner tube 32.

[0030] In this embodiment, a plurality of connecting ribs 10 are provided in the gap between the outer cylinder 31 and the inner cylinder 32 corresponding to each scraper 9, one end of the connecting rib 10 is fixed to the back of the corresponding scraper 9, and the other end is rotatably connected to the side wall of the inner cylinder 32 through a rotating shaft 11. By rotating the scraper 9, the scraper 9 can scrape the sample at a specific position, and keep it sealed during the lifting process, thereby ensuring the accuracy of the sample and preventing the sample from leaking during the recovery process.

[0031] See also Figure 3 and Figure 4 In this embodiment, one side of the connecting rib 10 away from the scraper 9 passes through the inner wall of the inner tube 32 , and the side is a slope 12 .

[0032] like Figure 3 As shown, when the outer sampling tube 3 is sleeved in the fixed tube 2, the scraper 9 of the fixed tube 2 cannot rotate and open due to the restriction of the scraper 9, and the end of the scraper 9 of the inner sampling tube 3 can clamp the inclined surface 12 of the outer sampling tube 3, so that the inner sampling tube 3 and the outer sampling tube 3 can transmit torque to each other;

[0033] like Figure 4 As shown, when the outer sampling tube 3 is completely lowered to the outside of the fixed tube 2, the scraper 9 of the outer sampling tube 3 loses its restriction, and the scraper 9 of the outer sampling tube 3 gradually opens during the rotation process to scrape the rock sample at that location, until the inclined surface 12 of the outer sampling tube 3 is tangent to the end of the scraper 9 of the inner sampling tube 3, at which time the inner sampling tube 3 and the outer sampling tube 3 can no longer transmit torque, and the outer sampling tube 3 will stop rotating;

[0034] By analogy, after the scraper 9 of the inner sampling tube 3 is freed from the inner wall of the outer sampling tube 3, it can be opened to scrape samples, so that the sampling tube 3 gradually goes deeper from the outside to the inside to scrape rock samples of different depths. The innermost sampling tube 3 is rotatably connected to the rotating rod 6 through ratchets, and the lifting and rotation are directly controlled by the motor 8 and the lifting rod 7.

[0035] See also Figure 5 In this embodiment, a plurality of protrusions 13 are distributed on the outer side surface and the inclined surface 12 of the scraper 9. When the scraper 9 of the inner layer sampling tube 3 and the inclined surface 12 of the outer layer sampling tube 3 are in a fitted state, the inner layer sampling tube 3 and the outer layer sampling tube 3 can transmit torque and axial force to each other; that is, when the scraper 9 of the inner layer sampling tube 3 and the inclined surface 12 of the outer layer sampling tube 3 are separated, the outer layer sampling tube 3 will be stationary in the formation.

[0036] During the specific implementation, the bracket 1 is fixed at the survey position, the motor 8 is started, the sampling tube 3 is rotated by rotating the rotating rod 6, and the sampling tube 3 is controlled to descend by pressing the lifting rod 7, the drill bit is placed in the formation to perform the drilling operation, and the water at the bottom of the rotating rod 6 is pumped away by the water pump;

[0037] When the outer sampling tube 3 is completely lowered to the outside of the fixed tube 2, the scraper 9 of the outer sampling tube 3 gradually opens during the rotation process to scrape the rock sample at that location, until the inclined surface 12 of the outer sampling tube 3 is tangent to the end of the scraper 9 of the inner sampling tube 3, and the outer sampling tube 3 stops rotating;

[0038] By analogy, after the scraper 9 of the inner sampling tube 3 is freed from the restriction of the inner wall of the outer sampling tube 3, it can be opened to scrape samples, so that the sampling tube 3 gradually goes deeper from the outside to the inside to scrape rock samples at different depths;

[0039] After the sampling of each section of the sampling tube 3 is completed, the rotating rod 6 is reversed, and the back of the scraper 9 of the inner sampling tube 3 pushes the back of the inclined surface 12 of the outer sampling tube 3, so that the scraper 9 of the outer sampling tube 3 is closed, and then the lifting rod 7 is lifted to close the scraper 9 of each sampling tube 3 in turn and lift it to the ground.

[0040] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A drilling sampling device for water conservancy and environmental geological survey, comprising a bracket (1), characterized in that: A fixed cylinder (2) is fixed to one side of the support (1), a plurality of sampling cylinders (3) are arranged in sequence in the fixed cylinder (2), a rotating rod (6) is connected to the center of the innermost sampling cylinder (3), the rotating rod (6) is connected to the support (1) via a lifting rod (7), and a motor (8) is connected above the rotating rod (6); The sampling tube (3) is a hollow double-layer structure consisting of an outer tube (31) and an inner tube (32). The side wall of the outer tube (31) is provided with a plurality of vertical through grooves, and a vertical scraper (9) is provided in each of the through grooves. A plurality of connecting ribs (10) are provided in the gap between the outer cylinder (31) and the inner cylinder (32) corresponding to each scraper (9); one end of the connecting rib (10) is fixed to the back of the corresponding scraper (9), and the other end is rotatably connected to the side wall of the inner cylinder (32) via a rotating shaft (11); A side of the connecting rib (10) away from the scraper (9) penetrates the inner wall of the inner cylinder (32), and the side is an inclined surface (12); A plurality of protrusions (13) are distributed on the outer side surface and the inclined surface (12) of the scraper (9).

2. The drilling sampling device for water conservancy and environmental geological survey according to claim 1 is characterized in that: A hollow drill (4) is provided at the lower end of each sampling tube (3).

3. The drilling sampling device for water conservancy and environmental geological survey according to claim 1 is characterized in that: The bottom of the rotating rod (6) penetrates below the innermost sampling tube (3), and a center drill (5) is fixed to the bottom of the rotating rod (6).

4. The drilling sampling device for water conservancy and environmental geological survey according to claim 1 is characterized in that: The rotating rod (6) is a hollow drill rod, the upper end of which can be connected to a water pump.

Images