Geological drill soil sampler

Abstract

The utility model discloses a geological drilling earth taking device, including the earth taking pipe, by a plurality of petal arc pipe piece splicing and form the earth taking cavity that passes through up and down in the middle part, the upper end of every arc pipe piece all is provided with the upper thread connecting piece, and all upper thread connecting pieces splicing form the upper thread joint, the lower end of every arc pipe piece all is provided with the lower thread connecting piece, and all lower thread connecting pieces splicing form the lower thread joint, the upper thread joint is adapted to screw joint to have the connector, and the connector is opened to have the exhaust hole of the lower end and earth taking cavity intercommunication along the axis, and the upper end of exhaust hole and the transverse hole that opens on the connector are intercommunication, the lower thread joint is adapted to screw joint to have the earth taking drill bit of the lower part for the taper structure, and the earth taking drill bit has the earth drilling cavity coaxial intercommunication with earth taking cavity. The utility model has the advantages of not only can ensure that the earth sample is stably drilled to the connecting drilling machine, but also is convenient to separate and take out the internal earth sample, avoids sampling inconvenience, earth sample damage, and greatly improves the work efficiency of earth drilling sampling.

Description

Technical Field

[0001] This utility model relates to the field of geological exploration technology, and in particular to a geological drilling soil sampler. Background Technology

[0002] Geological drilling sampling refers to the process of collecting samples from geological bodies according to certain requirements during geological exploration, and then analyzing and studying these samples. The purpose is to provide necessary data or information for solving geological, mineral, and engineering problems through the analysis and study of the samples.

[0003] To address the inconvenience of pressing down for soil sampling, existing geological drilling soil samplers, such as the "Geological Sampling Device for Coalfield Geological Exploration" disclosed in patent number CN202320434930.2, feature a two-part sampling cylinder that can be easily assembled and disassembled. However, relying solely on a clamping mechanism at the top to secure the two halves makes them prone to separation at the lower ends during pressing down, resulting in poor overall stability. Furthermore, the closed structure at the top of the sampling cylinder compresses air inside during pressing down, creating resistance and hindering soil sampling. Additionally, the connection between the top of the two halves and the drilling machine's drive rod is complex, making assembly, disassembly, and manufacturing difficult, thus hindering widespread adoption and application. Summary of the Invention

[0004] The purpose of this utility model is to provide a geological drilling soil sampler to address the shortcomings of existing technologies.

[0005] To achieve the above objectives, the present invention can adopt the following technical solution:

[0006] The geological drilling soil sampler of this utility model includes a soil sample tube, which is composed of several arc-shaped tube segments spliced ​​together, forming a soil sample cavity that runs vertically through the middle. Each arc-shaped tube segment has an upper threaded connecting piece extending upwards at its upper end, and all the upper threaded connecting pieces are spliced ​​together to form an upper threaded joint. Each arc-shaped tube segment has a lower threaded connecting piece extending downwards at its lower end, and all the lower threaded connecting pieces are spliced ​​together to form a lower threaded joint. A connector for mounting on the working end of a drilling rig is adapted to be screwed onto the upper threaded joint. The connector has an vent hole along its axis, the lower end of which communicates with the soil sample cavity. The upper end of the vent hole communicates with a horizontal hole opened horizontally on the connector. A soil sampler bit with a tapered lower structure is adapted to be screwed onto the lower threaded joint. The soil sampler bit has a drilling cavity coaxially connected to the soil sample cavity.

[0007] Furthermore, the diameter of the drilling chamber is consistent with the diameter of the soil sampling chamber, ensuring that the soil sample can smoothly enter the soil sampling chamber during drilling and sampling.

[0008] Furthermore, the splicing edges of two adjacent arc-shaped tube segments are provided with positioning protrusions and positioning slots that are adapted for insertion, which can accurately position the splicing of adjacent arc-shaped tube segments and improve the splicing strength of adjacent arc-shaped tube segments.

[0009] Furthermore, to make the connection more stable, the upper threaded connector, which is spliced ​​from the upper threaded connecting pieces, has a first annular groove along its circumference. The connector head has a plurality of first threaded through holes evenly spaced along its circumference. Each first threaded through hole is screwed with a first positioning screw that fits and is fixed in the first annular groove. The lower threaded connector, which is spliced ​​from the lower threaded connecting pieces, has a second annular groove along its circumference. The soil sampling drill head has a plurality of second threaded through holes evenly spaced along its circumference. Each second threaded through hole is screwed with a second positioning screw that fits and is fixed in the second annular groove.

[0010] The advantages of this invention lie in the fact that the soil sampling pipe, composed of multi-lobed arc-shaped segments, combined with connectors and a soil sampling drill bit screwed to the upper and lower ends of the pipe, not only ensures the stability of the pipe and the stability of the drilling rig in obtaining soil samples, but also facilitates the separation and extraction of the internal soil sample, avoiding the inconvenience and damage to the soil sample caused by pressing down on one end of the pipe. In addition, the vent holes and horizontal holes on the connectors form an venting channel connected to the soil sampling chamber, allowing the air in the chamber to be quickly expelled with the compression of the soil sample during drilling and sampling, preventing the air in the chamber from creating resistance to the soil sample, ensuring that the soil sample can smoothly enter the chamber, and greatly improving the efficiency of drilling and sampling. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 yes Figure 1 Enlarged view of section A.

[0013] Figure 3 yes Figure 1 Enlarged view of section B in the middle.

[0014] Figure 4 This is a schematic diagram of the splicing of two adjacent arc-shaped tube segments. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figure 1-4 As shown, the geological drilling soil sampler of this utility model includes a cylindrical soil sampler tube 1, which is formed by sequentially splicing 2 to 3 arc-shaped tube segments 1.1 along the circumference, forming a soil sampler cavity 1.2 that runs vertically through the middle; each arc-shaped tube segment 1.1 has an upper threaded connecting piece 1.3 extending upward from its upper end, and all the upper threaded connecting pieces 1.3 are spliced ​​together to form an upper threaded joint; each arc-shaped tube segment 1.1 has a lower threaded connecting piece 1.4 extending downward from its lower end, and all the lower threaded connecting pieces 1.4 are spliced ​​together to form a lower threaded joint.

[0017] A connector 2 is screwed onto the threaded joint formed by splicing threaded connecting pieces 1.3. The tightening direction of connector 2 should be consistent with the rotation direction of the drilling rig to prevent connector 2 from loosening and falling off during operation. This allows connector 2 to be easily connected and installed on the working end of the drilling rig, enabling the drilling rig to drive it for soil sampling. In addition, a vent hole 3 is provided along the axis on connector 2, with its lower end communicating with the soil sampling chamber 1.2. The upper end of the vent hole 3 is connected to a horizontal hole 4 opened on connector 2, forming an exhaust channel for venting gas from the soil sampling chamber 1.2.

[0018] A soil sampling drill bit 5 is screwed onto a threaded joint formed by splicing threaded connecting pieces 1.4. Similarly, the tightening direction of the soil sampling drill bit 5 should be consistent with the rotation direction of the drilling machine to prevent the soil sampling drill bit 5 from loosening and falling off during operation. In addition, the upper part of the soil sampling drill bit 5 is a cylindrical structure with the same outer diameter as the soil sampling pipe 1, and the lower part is a conical structure with the outer diameter gradually decreasing from top to bottom. The inner side of the soil sampling drill bit 5 has a drilling chamber 6 that is coaxially connected with the soil sampling chamber 1.2, and the diameter of the drilling chamber 6 is consistent with the diameter of the soil sampling chamber 1.2 to ensure that the soil sample can smoothly enter the soil sampling chamber 1.2 during soil sampling.

[0019] Furthermore, to ensure that adjacent two arc-shaped segments 1.1 can be precisely spliced ​​together, positioning protrusions 7 and positioning slots 8 (such as...) should be provided on the splicing edges of adjacent two arc-shaped segments 1.1. Figure 4 As shown, a positioning protrusion 7 is provided on the splicing edge of the right arc-shaped tube segment 1.1, and a positioning slot 8 that is adapted to and inserted into the positioning protrusion 7 is provided on the splicing edge of the left arc-shaped tube segment 1.1, so as to accurately position the splicing of the two adjacent arc-shaped tube segments 1.1, avoid splicing misalignment, and at the same time improve the splicing strength of the adjacent arc-shaped tube segments 1.1 and enhance stability.

[0020] Furthermore, to make the connection between connector 2 and soil sampling pipe 1 more secure, such as... Figure 2As shown, the threaded connector, assembled from threaded connecting pieces 1.3, has a first annular groove 9 circumferentially formed. Simultaneously, multiple first threaded through holes 10 are evenly spaced circumferentially on the connector 2. Each first threaded through hole 10 is threaded with a first positioning screw 11, its inner end fitted and fixed within the first annular groove 9. The first threaded through hole 10 is a stepped hole, ensuring that the first positioning screw 11 can be concealed within it when screwed in, avoiding interference with soil sampling. Furthermore, under the centripetal pressure applied by the first positioning screw 11, the upper end of the arc-shaped tube 1.1 is further secured within the connector 2 during soil sampling. To further solidify the connection between the soil sampling drill bit 5 and the soil sampling tube 1, as follows... Figure 3 As shown, the threaded connector, which is spliced ​​from the threaded connecting piece 1.4, has a second annular groove 12 circumferentially provided. At the same time, multiple second threaded through holes 13 are evenly spaced circumferentially on the soil sampling drill bit 5. Each second threaded through hole 13 is screwed with a second positioning screw 14 whose inner end is adapted to be fixed in the second annular groove 12. The second threaded through hole 13 is a stepped hole, which ensures that the second positioning screw 14 can be hidden in the second threaded through hole 13 when screwed in, so as to avoid affecting the soil sampling. Furthermore, under the centripetal pressure applied by the second positioning screw 14, it can further ensure that the lower end of the arc-shaped tube 1.1 is stable in the soil sampling drill bit 5 during soil sampling.

[0021] In use, simply splice several arc-shaped segments 1.1 together to form a soil sampling pipe 1. Then, attach a screw-connector 2 to the upper end of the soil sampling pipe 1 and attach a screw-connected soil sampling drill bit 5 to its lower end. Further fix the connector 2 and the soil sampling drill bit 5 with the first positioning screw 11 and the second positioning screw 14. After that, it can be easily connected and installed on the working end of the drilling rig for drilling and soil sampling, ensuring the stability of the soil sampling pipe 1 and ensuring stable soil sampling.

[0022] After the soil sampling is completed, the connector 2 and the soil sampling drill bit 5 can be removed, and then the several arc-shaped tube segments 1.1 can be separated to easily remove the soil sample inside. This avoids the inconvenience and damage to the soil sample caused by pressing down on one end of the soil sampling tube 1. In addition, the vent hole 3 and the horizontal hole 4 opened on the connector 2 can also allow the air in the soil sampling chamber 1.2 to be quickly discharged with the compression of the soil sample during soil sampling, avoiding the air in the soil sampling chamber 1.2 from forming resistance to the soil sample, ensuring that the soil sample can enter the soil sampling chamber 1.2 smoothly, and greatly improving the efficiency of soil sampling.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

Claims

1. A geological drilling sampler, characterized in that: The system includes a soil sampling pipe, which is composed of several arc-shaped segments joined together, forming a vertically penetrating soil sampling cavity in its middle. Each arc-shaped segment has an upwardly extending upper threaded connecting piece at its upper end, and all the upper threaded connecting pieces are joined together to form an upper threaded joint. Each arc-shaped segment also has a downwardly extending lower threaded connecting piece at its lower end, and all the lower threaded connecting pieces are joined together to form a lower threaded joint. The upper threaded joint is fitted with a connector for installation on the working end of a drilling rig. The connector has an vent hole along its axis, the lower end of which communicates with the soil sampling cavity. The upper end of the vent hole communicates with a horizontal hole on the connector. The lower threaded joint is fitted with a soil sampling drill bit with a tapered lower section, and the drill bit has a drilling cavity coaxially connected to the soil sampling cavity.

2. The geological drilling sampler according to claim 1, characterized in that: The diameter of the drilling chamber is the same as the diameter of the soil sampling chamber.

3. The geological drilling sampler according to claim 1, characterized in that: The splicing edges of two adjacent arc-shaped tube segments are provided with positioning protrusions and positioning slots for fitting and insertion.

4. The geological drilling sampler according to claim 1, characterized in that: The threaded connector, which is spliced ​​from the threaded connecting pieces, has a first annular groove along its circumference. The connector head has a plurality of first threaded through holes evenly spaced along its circumference. Each first threaded through hole is screwed with a first positioning screw that is adapted to be fixed in the first annular groove.

5. The geological drilling sampler according to claim 1, characterized in that: The threaded connector, which is spliced ​​from the threaded connecting pieces, has a second annular groove along its circumference. The soil sampling drill bit has multiple second threaded through holes evenly spaced along its circumference. Each second threaded through hole is screwed with a second positioning screw that is adapted to be fixed in the second annular groove.

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