Argillaceous sandstone sampling device

Abstract

The utility model relates to the technical field of soil sampling, and discloses an argillaceous sandstone sampling device which comprises a connecting drill rod, a drill rod screw is arranged in the connecting drill rod, a sampling barrel located on the outer side of the drill rod screw is arranged at the bottom of the connecting drill rod, and a lifting disc nut is arranged on the outer side of the drill rod screw. The sampling device has the advantages that the lifting disc nut and the lifting disc on the outer side of the lifting disc nut are driven by the drill rod screw to move up and down, so that the diameter of the inner wall of the sampling barrel below the lifting disc is increased or decreased, and sampling drill teeth are uniformly arranged at the bottom of the sampling barrel in a surrounding manner; according to the sampling device for the argillaceous sandstone, the sampling drill teeth are arranged at the bottom of the sampling barrel, so that a worker can conveniently take out sampled soil, and disturbance of the device to the argillaceous sandstone is reduced when the sampling barrel samples the argillaceous sandstone through the sampling barrel and the sampling drill teeth at the bottom of the sampling barrel, so that the integrity performance of the sampled argillaceous sandstone is improved, and the worker can conveniently research and detect the sampled soil; and the use comfort of workers is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of soil sampling, and more specifically to a muddy sandstone sampling device. Background Art

[0002] Mudstone is a sedimentary rock composed of quartz, feldspar, mica and other minerals with a particle size between 0.063 and 2 mm, which contains a high proportion of clay particles. Therefore, mudstone has the characteristics of wide particle size distribution, high proportion of clay, diverse colors, weak inter-particle bonding, high porosity, etc. At the same time, mud can be used to detect oil and gas exploration and development, geological disaster assessment, environmental evolution research, etc.; and the sampling devices commonly used in the current engineering survey field cannot take samples in mud-cemented sandstone. The main reasons are as follows: conventional thin-walled samplers have no drill bit at the front end, and cannot be sampled by direct pressure; secondly, the general exploration drill bit has large teeth and large tooth spacing, and direct drilling sampling is likely to damage the sampling of mud-cemented sandstone; thirdly, the friction between the sampling tube and the soil sample is small, and the soil sample cannot be taken out of the borehole. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the utility model provides a muddy sandstone sampling device to solve the problems existing in the above-mentioned background technology.

[0004] The utility model provides the following technical solutions: a muddy sandstone sampling device, comprising a connecting drill rod, a drill rod screw is arranged inside the connecting drill rod, a sampling barrel located outside the drill rod screw is arranged at the bottom of the connecting drill rod, a lifting disk nut is arranged outside the drill rod screw, a lifting disk is arranged outside the lifting disk nut, and sampling drill teeth are evenly arranged around the bottom of the sampling barrel. When the sampling barrel samples muddy sandstone, the disturbance of the device to the muddy sandstone is reduced through the sampling barrel and the sampling drill teeth at the bottom thereof, thereby increasing the complete performance of the sampled muddy sandstone, facilitating the staff to study and detect the sampled soil, and driving the lifting disk nut and the lifting disk outside thereof to move up and down through the drill rod screw, so that the diameter of the inner wall of the sampling barrel below the lifting disk becomes larger or smaller, thereby facilitating the staff to take out the sampled soil and increasing the comfort of use for the staff;

[0005] Furthermore, a rebound device body is provided on the top of the lifting plate, and a rebound device assembly is provided on the other side of the top of the lifting plate. The rebound device body and the rebound device assembly are used in combination to provide elastic support for the lifting plate, thereby preventing the expansion joint from being damaged when the lifting plate and the sampling tube are used in combination for sampling, thereby causing sampling failure.

[0006] Furthermore, the number of the sampling drill teeth is at least forty-eight groups, and the forty-eight groups of sampling drill teeth are evenly distributed around the bottom of the sampling tube. By installing multiple groups of sampling drill teeth at the bottom of the sampling tube, the distance between the sampling drill teeth is reduced, thereby preventing the sampling tube from damaging the mud-cemented sandstone during resampling, thereby increasing the integrity of the sampling tube sampling.

[0007] Furthermore, an expansion joint located on the inner side of the sampling barrel is provided on the outer side of the lifting plate. When the lifting plate nut and the lifting plate on the outer side thereof are driven by the drill rod screw through the expansion joint, the diameter of the inner wall of the sampling barrel below the lifting plate becomes larger or smaller, thereby making it convenient for the staff to take out the sampled soil and increasing the comfort of the staff.

[0008] Furthermore, a compression joint is provided on the outer side of the sampling barrel. By combining the compression joint with the expansion joint, the inner wall diameter of the sampling barrel below the lifting plate can increase or decrease as the drill rod screw moves up and down. At the same time, the compression joint increases the safety of the sampling barrel below the lifting plate and prevents it from being damaged during the change process.

[0009] Compared with the prior art, the beneficial effect of the present invention is that the drill rod screw drives the lifting plate nut and the lifting plate on its outside to move up and down, so that the inner wall diameter of the sampling tube below the lifting plate becomes larger or smaller, thereby facilitating the staff to take out the sampled soil, and through the sampling tube and the sampling drill teeth at the bottom, when the sampling tube samples the mud sandstone, the disturbance of the device to the mud sandstone is reduced, thereby increasing the integrity of the sampled mud sandstone, facilitating the staff to study and detect the sampled soil, and increasing the comfort of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0011] Figure 2 It is an exploded schematic diagram of the overall structure of the utility model.

[0012] Figure 3 This is a cross-sectional view of the sampling drill structure of the utility model.

[0013] Figure 4 It is a schematic diagram of the expansion joint structure of the utility model.

[0014] The accompanying drawings are marked as follows: 1. connecting drill rod; 2. rebound device body; 3. expansion joint; 4. lifting plate; 5. sampling drill teeth; 6. compression joint; 7. sampling tube; 8. drill rod screw; 9. lifting plate nut; 10. rebound device assembly. DETAILED DESCRIPTION

[0015] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The mudstone sandstone sampling device involved in the present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0016] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0017] Embodiment 1

[0018] Reference Figure 1-4 A mud sandstone sampling device, firstly, the sampling drill tooth 5 is installed around the bottom of the sampling tube 7, then the rebound device body 2 and the rebound device assembly 10 are respectively installed on the top of the inner wall of the sampling tube 7, and then the drill rod screw 8 is installed inside the sampling tube 7, and then the lifting plate nut 9 is installed on the outside of the drill rod screw 8, and then the lifting plate 4 is installed on the outside of the lifting plate nut 9, and the other end of the lifting plate 4 is installed on the inner wall of the sampling tube 7, and then the expansion joint 3 is installed above the connection between the lifting plate 4 and the sampling tube 7, and then the compression joint 6 is opened on the outside of the sampling tube 7, and finally the other end of the drill rod screw 8 is installed inside the connecting drill rod 1.

[0019] The working principle of the utility model is as follows: in use, the device is connected to the drill rod 1 by rotating the drill rod 1 through the drilling device, so that the connected drill rod 1 drives the sampling screw 8 to rotate downward. The sampling screw 8 has a limited length. After entering a certain depth, the connected drill rod 1 will be locked so that the sampling screw 8 no longer moves downward. At the same time, the sampling screw 8 rotates downward and drives the lifting plate 4 to move downward through the lifting plate nut 9. The lifting plate 4 moves downward and drives the diameter of the sampling tube 7 below the expansion joint 3 to increase until the diameter of the cylinder below the expansion joint 3 is equal to the diameter of the cylinder above the expansion joint 3. At the same time, the compression joint 6 can be compressed and expanded outward, which is convenient for the diameter of the sampling tube below the expansion joint 3 to increase or decrease. At this point, the device is pushed to the position to be sampled, and then the drilling rig rotating device drives the sampling tube 7 to rotate through the connected drill rod 1, and the entire sampling tube is moved downward through the drilling rig device, and the bottom of the sampling tube is driven by the sampling drill bit 5. The sampling drill teeth 11 begin to rotate and cut the soil. Since the sampling drill bit 5 has small teeth and a small tooth spacing, it will not disturb the mud-cemented sandstone. When the sampling tube 1 is drilled to a certain depth, the sampling is completed. Then the drilling rig device rotates in the opposite direction, and the sampling screw 8 moves upward, driving the lifting plate 4 to move upward. The lifting plate 4 moves upward and drives the diameter of the sampling tube 7 below the expansion joint 3 to become smaller, thereby increasing the direct friction between the sampling tube 7 and the soil sample. Then the entire sampling device is lifted out of the borehole through the drilling rig lifting device. At this point, the sampling is completed; when the sampling tube 7 is taken out, the staff rotates the drill rod screw 8 downward, thereby driving the lifting plate nut 9 and the lifting plate 4 on its outside to move downward, and the inner diameter of the lower part 7 of the lifting plate 4 is expanded, so that the sampled soil inside the lifting plate 4 and the sampling tube 7 can be easily taken out for inspection, which increases the inspection comfort of the staff.

[0020] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A shale sandstone sampling device, comprising a connecting drill rod (1), characterized in that: A drill rod screw (8) is provided inside the connecting drill rod (1), a sampling barrel (7) located outside the drill rod screw (8) is provided at the bottom of the connecting drill rod (1), a lifting disk nut (9) is provided outside the drill rod screw (8), a lifting disk (4) is provided outside the lifting disk nut (9), and sampling drill teeth (5) are evenly arranged around the bottom of the sampling barrel (7).

2. The argillaceous sandstone sampling device according to claim 1, characterized in that: A rebound device body (2) is provided on the top of the lifting plate (4), and a rebound device assembly (10) is provided on the other side of the top of the lifting plate (4).

3. The muddy sandstone sampling device according to claim 1, characterized in that: The number of the sampling drill teeth (5) is at least forty-eight groups, and the forty-eight groups of sampling drill teeth (5) are evenly distributed around the bottom of the sampling tube (7).

4. The argillaceous sandstone sampling device according to claim 2, characterized in that: The outer side of the lifting plate (4) is provided with an expansion joint (3) located on the inner side of the sampling tube (7).

5. The muddy sandstone sampling device according to claim 2, characterized in that: A compression seam (6) is provided on the outer side of the sampling tube (7).

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