Push-pull type soil sampler

Abstract

The utility model relates to a push-pull type soil sampler which comprises an outer pipe inserted into soil, a sampling barrel with a downward opening and inserted into the outer pipe, and a sampling rod fixedly connected to the top surface of the sampling barrel. According to the soil sampler, firstly, the outer pipe is inserted into the soil, so that the sampled soil is separated from other soil, then the sampling rod is pushed to drive the sampling barrel to be inserted into the outer pipe, so that the soil in the outer pipe enters the sampling barrel, and then the sampling rod is pulled upwards to drive the sampling barrel to be pulled out of the outer barrel. A supporting effect is achieved through the arrangement of the outer pipe, soil collapse is prevented, and therefore soil of different depths can be sampled; through the arrangement of the outer middle pipe, the length of the outer pipe can be increased conveniently, and therefore a deep drilled hole is protected; and through the arrangement of the first rod section and the plurality of second rod sections, the sampling barrel can be conveniently lengthened, so that the sampling barrel can be driven to extend to deeper underground, and deeper soil can be sampled.

Description

Technical Field

[0001] The utility model relates to the field of sampling, in particular to the technical field of soil sampling, and specifically refers to a push-pull type soil sampler. Background Art

[0002] The collection of soil samples is the foundation of soil science research and geological exploration, and provides a material basis for the determination of the physical and chemical properties of soil samples. There are many methods for soil sampling. In the prior art, drill pipe sampling is generally used. When the drill pipe is drilled into the ground, the soil forms a soil column in the drill pipe. The entire soil column is taken out for analysis. However, when the sampling depth is large, the drill pipe length is also required to be large. At the same time, after drilling to a certain depth, the borehole will collapse, making it impossible to accurately sample soil at different depths. Utility Model Content

[0003] The utility model aims at the deficiencies of the prior art and provides a push-pull type soil sampler, which supports the drill hole and prevents the drill hole from collapsing, thereby ensuring the sampling of soils at different depths.

[0004] The utility model is realized through the following technical scheme: a push-pull type soil sampler comprises an outer tube inserted into the soil, a sampling tube with an opening downwardly inserted into the outer tube, and a sampling rod fixedly connected to the top surface of the sampling tube.

[0005] When the utility model is in use, the outer tube is first inserted into the soil, so that the sampled soil is separated from other soils, and then the sampling rod is pushed to drive the sampling tube to be inserted into the outer tube, so that the soil in the outer tube enters the sampling tube, and then the sampling rod is pulled upward to drive the sampling tube to be pulled out of the outer tube, so as to obtain a soil sample of a predetermined depth. The outer tube plays a supporting role and prevents soil collapse, so as to sample soil at different depths.

[0006] Preferably, the outer tube includes an outer top tube, an outer bottom tube, and an outer middle tube located between the outer top tube and the outer bottom tube, the top surface of the outer middle tube is provided with an annular threaded hole, the bottom surface of the outer middle tube is provided with a threaded ring threadedly connected to the threaded hole, the top surface of the outer bottom tube is also provided with the threaded hole, and the bottom surface of the outer top tube is also provided with the threaded ring.

[0007] When this preferred solution is in use, the provision of the outer middle tube facilitates the length of the outer tube to be increased, thereby protecting very deep drill holes.

[0008] Preferably, drilling cones evenly arranged along the circumference of the outer bottom tube are fixedly connected to the bottom surface of the outer bottom tube.

[0009] The arrangement of this preferred solution facilitates the downward movement of the outer bottom tube.

[0010] Preferably, a symmetrically arranged pressing plate is fixedly connected to the circumferential surface of the outer top pipe.

[0011] The preferred solution provides a pressing plate, which makes it easier for workers to drive the outer pipe into the ground by pressing down the pressing plate.

[0012] Preferably, the sampling rod includes a first rod segment fixedly connected to the sampling tube, and a plurality of second rod segments connected in sequence along the height direction, a blind hole is provided on the top surface of the second rod segment, a threaded column threadedly connected to the blind hole is provided on the bottom surface of the second rod segment, and the blind hole is also provided on the top surface of the first rod segment.

[0013] This preferred solution facilitates lengthening of the sampling tube by providing the first rod segment and a plurality of second rod segments, thereby being able to drive the sampling tube to extend deeper underground, thereby being able to sample deeper soil.

[0014] Preferably, a guide ring is fixedly connected to the opening of the sampling tube, and the inner circumferential surface of the guide ring is an annular conical surface extending outwardly.

[0015] In this preferred solution, by providing a guide ring, a channel inclined upward and inward is formed at the opening of the sampling tube, thereby facilitating soil sampling.

[0016] Preferably, a push plate is further provided in the sampling tube, and an iron wire extending to the top of the sampling tube is fixedly connected to the top surface of the push plate.

[0017] When the preferred solution is in use, the iron wire is pushed to drive the push plate to move downward, thereby taking the soil in the sampling tube out of the sampling tube.

[0018] The beneficial effects of the utility model are as follows: first, the outer tube is inserted into the soil, thereby separating the sampled soil from other soils, and then the sampling rod is pushed to drive the sampling tube to be inserted into the outer tube, so that the soil in the outer tube enters the sampling tube, and then the sampling rod is pulled upward to drive the sampling tube to be pulled out of the outer tube, so as to obtain a soil sample of a predetermined depth. The setting of the outer tube plays a supporting role and prevents soil collapse, so as to sample soil at different depths; the setting of the outer middle tube facilitates the increase in the length of the outer tube, so as to protect very deep boreholes; the setting of the first rod section and a plurality of second rod sections facilitates the lengthening of the sampling tube, so as to drive the sampling tube to extend to a deeper underground, so as to sample deeper soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a perspective schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the main view of the outer middle tube;

[0021] Figure 3 Schematic diagram of the top view of the outer middle tube;

[0022] Figure 4 is a top view schematic diagram of the outer bottom tube;

[0023] Figure 5 is a perspective schematic diagram of a sampling tube;

[0024] As shown in the figure:

[0025] 1. Outer bottom tube, 2. Outer middle tube, 3. Outer top tube, 4. Pressing plate, 5. Sampling tube, 6. Guide ring, 7. Pushing plate, 8. Iron wire, 9. First rod section, 10. Second rod section, 11. Blind hole, 12. Drilling cone, 13. Threaded ring. DETAILED DESCRIPTION

[0026] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0027] See attached Figure 1-5 The utility model is a push-pull type soil sampler, comprising an outer tube inserted into the soil, a sampling tube 5 with an opening downwardly inserted into the outer tube, and a sampling rod fixedly connected to the top surface of the sampling tube 5.

[0028] The outer tube includes an outer top tube 3, an outer bottom tube 1, and an outer middle tube 2 located between the outer top tube 3 and the outer bottom tube 1. An annular threaded hole is opened on the top surface of the outer middle tube 2, and a threaded ring 13 threadedly connected to the threaded hole is provided on the bottom surface of the outer middle tube 2. The threaded hole is also opened on the top surface of the outer bottom tube 1, and the threaded ring 13 is also provided on the bottom surface of the outer top tube 3. The bottom surface of the outer bottom tube 1 is fixedly connected with drilling cones 12 evenly arranged along its circumference, and the circumferential surface of the outer top tube 3 is also fixedly connected with symmetrically arranged pressing plates 4.

[0029] The sampling rod includes a first rod segment 9 fixedly connected to the sampling tube 5, and a plurality of second rod segments 10 connected in sequence along the height direction. A blind hole 11 is provided on the top surface of the second rod segment 10, and a thread is provided in the blind hole 11. A threaded column threadedly connected to the blind hole 11 is provided on the bottom surface of the second rod segment 10. The blind hole 11 is also provided on the top surface of the first rod segment 9.

[0030] A guide ring 6 is also fixedly connected to the opening of the sampling tube 5, and the inner circumferential surface of the guide ring 6 is an annular cone surface extending outwardly. A push plate 7 is also provided in the sampling tube 5, and a wire 8 extending to the top of the sampling tube 5 is fixedly connected to the top surface of the push plate 7.

[0031] When the utility model is in use, firstly, the number of outer middle tubes 2 required is determined according to the sampling depth, and then the outer bottom tube 1, the outer middle tube 2, and the outer top tube 3 are connected in sequence, and then the pressing plate 4 is pressed or rotated to drive the outer bottom tube 1 to be inserted into the soil, thereby separating the sampled soil from other soils, and then the sampling rod is pushed to drive the sampling tube 5 to be inserted into the outer tube, so that the soil in the outer tube enters the sampling tube 5, and then the sampling rod is pulled upward to drive the sampling tube 5 to be pulled out of the outer tube, and then the iron wire 8 is driven to move downward to drive the pushing plate 7 to take the soil in the sampling tube 5 out of the sampling tube 5. As the sampling depth increases, the second rod section 10 is continuously added to deepen the extension depth of the sampling tube 5, so as to obtain a deeper soil sample.

[0032] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A push-pull soil sampler, characterized in that: It comprises an outer tube inserted into the soil, a sampling tube (5) with an opening inserted downward into the outer tube, and a sampling rod fixedly connected to the top surface of the sampling tube (5); The outer tube comprises an outer top tube (3), an outer bottom tube (1), and an outer middle tube (2) located between the outer top tube (3) and the outer bottom tube (1); an annular threaded hole is provided on the top surface of the outer middle tube (2); a threaded ring (13) is provided on the bottom surface of the outer middle tube (2) and is threadedly connected in the threaded hole; the threaded hole is also provided on the top surface of the outer bottom tube (1); and the threaded ring (13) is also provided on the bottom surface of the outer top tube (3); The sampling rod comprises a first rod section (9) fixedly connected to the sampling tube (5), and a plurality of second rod sections (10) connected in sequence along the height direction, a blind hole (11) is provided on the top surface of the second rod section (10), a thread is provided in the blind hole (11), a threaded column is provided on the bottom surface of the second rod section (10) and is threadedly connected to the blind hole (11), and the blind hole (11) is also provided on the top surface of the first rod section (9); A guide ring (6) is also fixedly connected to the opening of the sampling tube (5), and the inner circumferential surface of the guide ring (6) is an annular conical surface extending outwardly in an inclined manner.

2. The push-pull soil sampler according to claim 1, characterized in that: The bottom surface of the outer bottom tube (1) is fixedly connected with drilling cones (12) which are evenly arranged along its circumference.

3. The push-pull soil sampler according to claim 1, characterized in that: A symmetrically arranged pressing plate (4) is also fixedly connected to the circumferential surface of the outer top pipe (3).

4. The push-pull soil sampler according to claim 1, characterized in that: A push plate (7) is also provided in the sampling tube (5), and an iron wire (8) extending to the top of the sampling tube (5) is fixedly connected to the top surface of the push plate (7).

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