Soil sampling device

Abstract

The utility model discloses a soil sampling device which comprises a drilling rod and a drill bit detachably arranged at one end of the drilling rod, the drilling rod is of a hollow structure, and a sampling rod is movably arranged in the drilling rod; one end of the sampling rod close to the drill is connected with a sampling barrel; the drill bit is of an inverted-cone-shaped structure and is divided into a drill body and a drill tip along the middle portion. One side, adjacent to the drill tip, of the drill body is respectively provided with a non-return ring, and the two non-return rings are symmetrically arranged relative to the center of the drill bit; the drill tip is connected with the sampling barrel. The utility model has the beneficial effects that the drilling rod and the sampling rod are arranged to sample deep soil while drilling; a non-return ring is arranged to prevent the drilling rod and the sampling rod from rotating relatively during drilling, so that the drilling efficiency is improved; the first threaded blade obliquely arranged on the peripheral wall of the sampling barrel and the sampling groove formed in the lower portion of the first threaded blade facilitate collection of soil into the sampling barrel.

Description

Technical Field

[0001] The utility model belongs to the field of environmental detection technology equipment, and in particular relates to a soil sampling device. Background Art

[0002] Soil sampling is an indispensable task in soil science research, agricultural production and environmental monitoring. Traditional soil sampling methods usually include manual digging, drilling or using mechanical samplers. However, these methods have some obvious defects, especially in sampling efficiency and sample quality.

[0003] Traditional soil drilling machines, such as drills and soil auger, are able to penetrate deep into the soil, but they are often only used to form soil sample holes, and cannot take samples while drilling the soil. This means that after the drilling is completed, other tools or methods are needed to remove the soil sample from the hole. Such a process is not only inefficient, but also may cause contamination or structural damage to the soil sample due to multiple operations.

[0004] In addition, although some existing samplers claim to be able to drill soil and sample at the same time, their designs are often complex, cumbersome to operate, and have high maintenance costs, which limits the application of these samplers in field or large-scale sampling work.

[0005] Therefore, developing a soil sampling device that can sample while drilling the soil and has a simple structure, easy operation, and low maintenance cost has important practical significance and application value for improving the efficiency of soil sampling and sample quality.

[0006] Based on the above background, we propose a soil sampling device. Utility Model Content

[0007] The utility model aims to provide a soil sampling device.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A soil sampling device comprises a drilling rod and a drill bit detachably arranged at one end of the drilling rod, wherein the drilling rod is a hollow structure and a sampling rod is movably arranged inside the drilling rod; the sampling rod is connected to a sampling tube at one end close to the drill bit; the drill bit is an inverted cone structure and is divided along a part thereof to form a drill body and a drill tip; a check ring is respectively arranged on one side of the drill body adjacent to the drill tip, and the two check rings are symmetrically arranged about the center of the drill bit; the check ring comprises two semicircular arc-shaped parts, and the thickness of the arc-shaped parts changes from thin to thick to form a low-position transition part and a high-position abutment part, and the two check rings abut against each other through the high-position abutment part; the drill tip is connected to the sampling tube.

[0010] Preferably, a first threaded blade is disposed on the peripheral wall of the sampling tube, and the outer edge of the first threaded blade is inclined downward.

[0011] Preferably, a peripheral wall of the sampling tube is provided with sampling grooves along the lower portion of the first threaded blade, and the sampling grooves are staggered at 180°.

[0012] Preferably, the drill bit is threadedly connected to one end of the drilling rod.

[0013] Preferably, the sampling rod is a screw rod and is connected to the inner thread of the drilling rod.

[0014] Preferably, a second threaded blade is disposed on the outside of the drilling rod.

[0015] Preferably, the other end of the drilling rod and the sampling rod is respectively provided with a rotating handle.

[0016] The beneficial effects of the utility model are as follows: deep soil is sampled while drilling by arranging the drilling rod and the sampling rod; the setting of the check ring prevents the drilling rod and the sampling rod from rotating relative to each other during drilling, thereby improving the drilling efficiency; the first threaded blade inclined on the peripheral wall of the sampling tube and the sampling groove arranged at the lower part thereof facilitate the collection of soil into the sampling tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a soil sampling device of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the drill bit of the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the drill body of the utility model when viewed from above.

[0020] The components include: a drilling rod 10 , a drill bit 12 , a sampling rod 14 , a sampling tube 16 , a drill body 18 , a drill tip 20 , a check ring 22 , a first threaded blade 24 , a sampling groove 26 , a second threaded blade 28 , and a rotating handle 30 . DETAILED DESCRIPTION

[0021] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0022] like Figures 1 to 3As shown, a soil sampling device of the utility model comprises a drilling rod 10 and a drill bit 12 detachably arranged at one end of the drilling rod 10, the drilling rod 10 is a hollow structure, and a sampling rod 14 is movably arranged therein; the sampling rod 14 is connected to a sampling barrel 16 at one end close to the drill bit 12; the drill bit 12 is an inverted cone structure, and is divided along a portion thereof to form a drill body 18 and a drill tip 20; a check ring 22 is respectively arranged on one side of the drill body 18 adjacent to the drill tip 20, and the two check rings 22 are symmetrically arranged about the center of the drill bit 12; the check ring 22 comprises two semicircular arc-shaped pieces, and the thickness of the arc-shaped pieces changes from thin to thick to form a low-position transition portion and a high-position abutment portion, and the two check rings 22 abut against each other through the high-position abutment portion; the drill tip 20 is connected to the sampling barrel 16, and the sampling barrel 16 passes through the drill body 18 and is movably arranged therein; a second threaded blade 28 is arranged on the outside of the drilling rod 10. During implementation, the drill bit 12 is inserted into the soil and rotated clockwise, and the threaded blade is screwed into the soil; at this time, the two check rings 22 between the drill body 18 and the drill tip 20 are relatively stressed and abut against each other through the high-position abutment portion, so that the drill body 18 and the drill tip 20 will not rotate relative to each other, thereby improving the drilling efficiency; when drilling to the specified depth, the drilling rod 10 is stopped and the sampling rod 14 is started to be rotated for sampling; at this time, the sampling rod 14 is rotated counterclockwise, the two check rings 22 rotate relative to each other from the low-position transition portion, and are relatively lifted along the thickness direction of the arc-shaped member, the drill tip 20 extends toward the soil depth direction, and the sampling tube 16 samples the soil.

[0023] Furthermore, the peripheral wall of the sampling barrel 16 is provided with a first thread blade 24, and the outer edge of the first thread blade 24 is inclined downward. The peripheral wall of the sampling barrel 16 is provided with a sampling groove 26 along the lower part of the first thread blade 24, and the sampling groove 26 is arranged in a 180° spiral staggered manner. The inclined first thread blade 24 facilitates drilling the soil while squeezing the soil into the sampling barrel 16 through the sampling groove 26 along the inclined direction; the sampling groove 26 is arranged in a 180° staggered manner to ensure the strength of the barrel of the sampling barrel.

[0024] The drill bit 12 is threadedly connected to one end of the drilling rod 10. The sampling rod 14 is a screw rod and is threadedly connected to the inner side of the drilling rod 10. The other ends of the drilling rod 10 and the sampling rod 14 are respectively provided with a rotating handle 30.

[0025] When the device is working, the drill bit 12 is inserted into the soil and rotated clockwise, and the threaded blade is screwed into the soil; when the drilling reaches the specified depth, the sampling rod 14 is rotated to take samples; the drill tip 20 extends toward the depth direction of the soil, and the inclined first threaded blade 24 facilitates drilling the soil, while squeezing the soil into the sampling tube 16 through the sampling groove 26 along the inclined direction; after sampling, the drilling rod 10 is pulled out, the sampling tube 16 is disassembled, and the soil sample is preserved.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A soil sampling device, comprising a drilling rod and a drill bit detachably arranged at one end of the drilling rod, characterized in that: The drilling rod is a hollow structure, and a sampling rod is movably arranged inside it; the sampling rod is connected to a sampling tube at one end close to the drill bit; the drill bit is an inverted cone structure, and is divided along a part thereof to form a drill body and a drill tip; a check ring is respectively arranged on one side of the drill body adjacent to the drill tip, and the two check rings are symmetrically arranged about the center of the drill bit; the check ring includes two semicircular arc-shaped parts, and the thickness of the arc-shaped parts changes from thin to thick to form a low-position transition part and a high-position abutment part, and the two check rings are abutted through the high-position abutment part; the drill tip is connected to the sampling tube.

2. A soil sampling device according to claim 1, characterized in that: A first thread blade is disposed on the peripheral wall of the sampling tube, and the outer edge of the first thread blade is tilted downward.

3. A soil sampling device according to claim 2, characterized in that: The peripheral wall of the sampling tube is provided with sampling grooves along the lower part of the first threaded blade, and the sampling grooves are staggered at 180 degrees.

4. A soil sampling device according to claim 1, characterized in that: The drill bit is threadedly connected to one end of the drilling rod.

5. A soil sampling device according to claim 1, characterized in that: The sampling rod is a screw rod and is connected with the inner thread of the drilling rod.

6. A soil sampling device according to claim 1, characterized in that: A second thread blade is arranged on the outside of the drilling rod.

7. A soil sampling device according to claim 1, characterized in that: The other end of the drilling rod and the sampling rod is respectively provided with a rotating handle.

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