Oppositely-combined type sampling tube

Abstract

The utility model relates to the technical field of soil collection, and discloses a folding type sampling tube which comprises a holding part, an outer sleeve and an inner tube, the upper end of the outer sleeve is detachably connected with the holding part, and the lower end of the outer sleeve is detachably connected with a drill bit; the inner pipe comprises a first folding pipe and a second folding pipe, the section of the first folding pipe and the section of the second folding pipe are semicircular, openings of the first folding pipe and the second folding pipe face each other, the first folding pipe and the second folding pipe are connected together through a clamping structure to form a complete pipe body, and the inner pipe is arranged in the outer sleeve in a sleeved mode. The two ends of the inner pipe abut against the holding part and the drill bit respectively. According to the utility model, a traditional integrated internal sampling tube is improved into the separable sampling tube consisting of the first folding tube, the second folding tube and the clamping structure, so that a sample collected in the sampling tube can be conveniently taken out after sampling is finished, the sampling tube can be used for many times, waste is avoided, the cost of the sampling tube is greatly reduced, and the sampling tube is convenient to use. The practicability is realized.

Description

Technical Field

[0001] This utility model relates to the field of soil sampling technology, specifically a combined sampling tube. Background Technology

[0002] To understand soil environmental quality and soil pollution status, sampling tubes are needed to collect soil samples. By analyzing the physical, chemical, and biological characteristics of the soil, a comprehensive assessment of soil quality can be made.

[0003] The current soil sampling process involves driving a drill rod with a sampling tube into the ground using a hydraulic impact drill. The sampling tube is drilled into the ground along with the external drill rod, and the soil is stored in the sampling tube. Then, the tube is pulled out together. However, existing soil sampling tubes are usually designed as a single unit, which requires cutting the sampling tube when the sample is removed. This makes the sampling tube a disposable item, thus increasing the cost of using the sampling tube. Utility Model Content

[0004] The purpose of this invention is to provide a combined sampling tube that facilitates the removal of soil samples and enables the reuse of the sampling tube.

[0005] The technical solution of this utility model is:

[0006] A pairing sampling tube includes a gripping part, an outer tube, and an inner tube. The upper end of the outer tube is detachably connected to the gripping part, and the lower end of the outer tube is detachably connected to a drill bit. The inner tube includes a first pairing tube and a second pairing tube, the first pairing tube and the second pairing tube having a semi-annular cross-section and their openings facing each other. The first pairing tube and the second pairing tube are connected together by a snap-fit ​​structure to form a complete tube body. The inner tube is sleeved inside the outer tube, and both ends of the inner tube abut against the gripping part and the drill bit, respectively.

[0007] Preferably, as a further improvement of the present invention, the engaging structure includes a limiting slot and a limiting block, the limiting slot being formed on the side wall opposite to the first engaging tube and the second engaging tube, and the limiting block being fixed on the side wall opposite to the limiting slot of the second engaging tube.

[0008] Preferably, as a further improvement of this utility model, the engaging structure is in multiple sets, and each set includes two engaging structures. The multiple sets of engaging structures are evenly distributed along the axial direction of the inner tube, and the two engaging structures in each set are symmetrically arranged on the side walls directly opposite the openings of the first engaging tube and the second engaging tube.

[0009] Preferably, as a further improvement of this utility model, a pipe clamp is connected to the outside of the first pair of pipes and the second pair of pipes, the pipe clamp being used to prevent the first pair of pipes and the second pair of pipes from separating during sampling.

[0010] Preferably, as a further improvement of this utility model, the gripping part includes a gripping rod and a connecting rod, the connecting rod is vertically fixed to the bottom of the gripping rod, the connecting rod has a first thread on its circumferential outer wall, the upper inner wall of the outer sleeve has a second thread that matches the first thread, and the outer sleeve is threadedly connected to the connecting rod.

[0011] Preferably, as a further improvement of this utility model, the lower end of the outer wall of the outer sleeve is provided with a third thread, and the drill bit is provided with a fourth thread that matches the third thread, and the outer sleeve is threadedly connected to the drill bit.

[0012] Preferably, as a further improvement of this utility model, a striking handle is connected to the top of the grip rod.

[0013] Preferably, as a further improvement of this utility model, the first pair of pipes and the second pair of pipes are made of polybutene, and the pipe clamps are made of polyvinyl chloride.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The traditional integrated internal sampling tube has been improved into a detachable sampling tube consisting of a first pair of tubes, a second pair of tubes, and a snap-fit ​​structure. This allows the sample collected in the sampling tube to be easily removed after sampling, thus enabling the sampling tube to be used multiple times, avoiding waste, greatly reducing the cost of the sampling tube, and making it practical.

[0016] 2. By detachably connecting the upper and lower ends of the outer tube to the grip and the drill bit respectively, it is not only easy to remove the inner tube after sampling, but also easy to replace the drill bit, avoiding the problem of the drill bit wearing out during long-term use and thus affecting the sampling effect. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a combined sampling tube according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram showing the connection between the first and second paired tubes in a paired sampling tube according to an embodiment of the present invention.

[0019] Figure 3 This is a three-dimensional schematic diagram of the connection between the upper and lower sampling tubes in a combined sampling tube according to an embodiment of the present invention.

[0020] Figure 4 This is a cross-sectional view of the upper and lower sampling tubes connected in a combined sampling tube according to an embodiment of the present invention.

[0021] Figure 5 This utility model Figure 4 A schematic diagram of the cross-sectional structure at point AA.

[0022] Figure 6 This utility model Figure 4 Schematic diagram of the cross-sectional structure at point BB. Detailed Implementation

[0023] The following is in conjunction with the appendix Figures 1-6 The specific embodiments of this utility model will be described in detail below. In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of a utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] Example

[0026] like Figure 1 and Figure 2 As shown, this utility model embodiment provides a pairing sampling tube, including a gripping part 1, an outer tube 2, and an inner tube; the upper end of the outer tube 2 is detachably connected to the gripping part 1, and the lower end of the outer tube 2 is detachably connected to the drill bit 3; the inner tube includes a first pairing tube 4 and a second pairing tube 5, the cross-sections of the first pairing tube 4 and the second pairing tube 5 are semi-annular, and the openings are directly opposite each other. The first pairing tube 4 and the second pairing tube 5 are connected together by a snap-fit ​​structure to form a complete tube body. The inner tube is sleeved inside the outer tube 2, and the two ends of the inner tube abut against the gripping part 1 and the drill bit 3, respectively.

[0027] In this embodiment, before sampling, the first pair of tubes 4 and the second pair of tubes 5 are connected into a complete tube body by a snap-fit ​​structure and placed inside the outer tube 2. Then, both ends of the outer tube 2 are connected to the gripping part 1 and the drill bit 3, respectively. The gripping part 1 and the drill bit 3 are used to fix the two ends of the inner tube. During sampling, the drill bit 3 and the outer tube 2 are inserted into the soil or bottom mud through the gripping part 1 for sampling. The sample enters the inner tube for storage through the sampling hole provided on the drill bit 3. After sampling, the drill bit 3 is removed from the outer tube 2, the inner tube containing the sample is taken out, and the first pair of tubes 4 and the second pair of tubes 5 are separated by the snap-fit ​​structure. This allows for easy sample removal. Therefore, compared to the traditional integrated internal sampling tube, this invention improves upon it by creating a detachable sampling tube composed of a first pair of tubes 4, a second pair of tubes 5, and a locking structure. This facilitates the removal of the sample collected in the sampling tube after sampling, enabling multiple uses of the sampling tube, avoiding waste, and significantly reducing the cost of the sampling tube. It is practical. Furthermore, since the outer tube 2 and the drill bit 3 are detachably connected, it is not only easy to remove the inner tube after sampling, but also convenient to replace the drill bit 3, avoiding the problem of wear and tear on the drill bit 3 during long-term use, which could affect the sampling effect.

[0028] Specifically, the locking structure includes a limiting slot 41 and a limiting plug 51. The limiting slot 41 is opened on the side wall opposite to the first pair of connecting tubes 4 and the second pair of connecting tubes 5. The limiting plug 51 is fixed on the side wall opposite to the limiting slot 41 of the second pair of connecting tubes 5. The first pair of connecting tubes 4 and the second pair of connecting tubes 5 are connected together by the limiting plug 51 and the limiting slot 41 in a plug-in manner, which can be easily disassembled and assembled.

[0029] Furthermore, in order to ensure the connection strength, multiple sets of locking structures are provided, and each set includes two locking structures. The multiple sets of locking structures are evenly distributed along the axial direction of the inner tube. The two locking structures in each set are symmetrically arranged on the side walls directly opposite the openings of the first pair of locking tubes 4 and the second pair of locking tubes 5.

[0030] Furthermore, to avoid external influences during the sampling process and the possibility of the sample stretching the inner tube, a tube clamp 6 is connected to the outside of the first pair of tubes 4 and the second pair of tubes 5. The tube clamp 6 is detachably fitted and fixed at the connection between the first pair of tubes 4 and the second pair of tubes 51 to prevent the limiting plug 51 from coming out of the limiting slot 41. When removed, the tube clamp 6 can be easily removed.

[0031] Specifically, the gripping part includes a gripping rod 11 and a connecting rod 12. The connecting rod 12 is vertically fixed to the bottom of the gripping rod 11. A first thread is provided on the circumferential outer wall of the connecting rod 12. A second thread matching the first thread is provided on the upper inner wall of the outer sleeve 2. The outer sleeve 2 is threadedly connected to the connecting rod 12.

[0032] The outer wall of the lower end of the outer sleeve 2 is provided with a third thread, and the drill bit 3 is provided with a fourth thread that matches the third thread. The outer sleeve 2 is threadedly connected to the drill bit 3.

[0033] Furthermore, in order to enable deep sampling, a striking handle 7 is connected to the top of the grip 11. During sampling, the striking handle 7 is struck with an impact hammer to insert the sampling tube into deeper soil or sediment.

[0034] Among them, the first pair of tubes 4 and the second pair of tubes 5 are made of polybutene, and the tube clamp 6 is made of polyvinyl chloride. They have good bending strength and impact toughness. While ensuring strength, the sampling tubes can be used multiple times to avoid waste.

[0035] In another embodiment of this utility model, such as Figures 3 to 6 As shown, to enable length adjustment of the sampling tube for sampling at greater depths, several tenons 81 are provided at the lower part of the upper sampling tube, and several mortises 82 matching the tenons 81 are provided at the upper part of the lower sampling tube. To lock and prevent the tenons 81 from disengaging from the mortises 82, locking grooves 83 are provided at the bottom of each mortise 82. When the sampling depth is greater, the lower tenons 81 of the upper sampling tube are inserted into the upper mortises 82 of the lower sampling tube. After insertion to the predetermined depth, the interface is rotated clockwise, gradually locking the sampling tube inside through the locking grooves 83. This extends the sampling tube, facilitating sampling at greater depths. After rotating to the appropriate tightness, gently pull the sampling tube to ensure it is firmly fixed in the interface. If the sampling tube easily slips out, it needs to be rotated and tightened again until the tube is completely fixed. For disassembly, simply rotate the locking structure counterclockwise to loosen the interface and pull out the sampling tube for easy maintenance and replacement.

[0036] The above-disclosed embodiments are merely preferred embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A clamshell sampling tube, characterized by, The utility model relates to a drill rod, which comprises: a holding part (1); an outer sleeve (2) with its upper end detachably connected to the holding part (1), and its lower end used for detachable connection with a drill bit (3); an inner tube comprising a first split tube (4) and a second split tube (5), the cross section of the first split tube (4) and the second split tube (5) being semicircular, and the openings being arranged opposite to each other, the first split tube (4) and the second split tube (5) being connected together through a clamping structure to form a complete tube body, the inner tube being sleeved in the outer sleeve (2), and the two ends of the inner tube being respectively abutted against the holding part (1) and the drill bit (3).

2. The hinged sampling tube of claim 1, wherein, The clamping structure comprises a limiting slot (41) and a limiting block (51), the limiting slot (41) being formed on the side wall of the first split tube (4) and the second split tube (5) opposite to each other, and the limiting block (51) being fixed on the side wall of the second split tube (5) opposite to the limiting slot (41).

3. The hinged sampling tube of claim 2, wherein, The clamping structure has multiple groups, each group comprising two clamping structures, and the multiple groups of clamping structures being uniformly arranged along the axial direction of the inner tube, and the two clamping structures in each group being symmetrically arranged on the side walls opposite to the openings of the first split tube (4) and the second split tube (5).

4. The hinged sampling tube of claim 3, wherein, The outer side of the first split tube (4) and the second split tube (5) is connected with a tube clamp (6), and the tube clamp (6) is used for preventing the first split tube (4) and the second split tube (5) from being separated during sampling.

5. The hinged sampling tube of claim 1, wherein, The holding part comprises a holding rod (11) and a connecting rod (12), the connecting rod (12) being vertically fixed to the bottom of the holding rod (11), a first thread being arranged on the circumferential outer wall of the connecting rod (12), a second thread being arranged on the inner wall of the upper end of the outer sleeve (2) and matching the first thread, and the outer sleeve (2) being threadedly connected with the connecting rod (12).

6. The hinged sampling tube of claim 5, wherein, A third thread is arranged on the outer wall of the lower end of the outer sleeve (2), a fourth thread being formed on the drill bit (3) and matching the third thread, and the outer sleeve (2) being threadedly connected with the drill bit (3).

7. The hinged sampling tube of claim 5, wherein, A beating handle (7) is connected to the top of the holding rod (11).

8. The hinged sampling tube of claim 4, wherein, The material of the first split tube (4) and the second split tube (5) is polybutylene, and the material of the tube clamp (6) is polyvinyl chloride.

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