Ground surface matrix staged sampling device

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By designing a stage-type sampling device for surface matrix including auger and a sampling cylinder, the problem of insufficient soil samples in the prior art is solved, and more efficient soil collection is achieved.

CN222528981UActive Publication Date: 2025-02-25CHINA GEOLOGICAL SURVEY NATURAL RESOURCES COMPREHENSIVE SURVEY COMMAND CENT

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Patent Information

Application Number: CN202420719680.1
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-04-09
Publication Date: 2025-02-25
Estimated Expiration: 2034-04-09

AI Technical Summary

Technical Problem

In the prior art, when threaded drill bits are used to drill into the soil, the soil in the area where the drill bit is vertically facing downward is discharged to both sides, resulting in the soil being away from the thrust of the threaded drill bit, the amount of soil being sampled is small, and the sample is insufficient.

Method used

A surface matrix stage sampling device is designed, including an auger piece and a sampling cylinder. The auger piece rotates in the vertical direction to break up the soil, and the sampling cylinder collects broken soil samples during the downcoming process.

Benefits of technology

The soil was broken through the auger and the samples were collected using the sampling barrel, which significantly increased the amount of soil samples collected at one time and reduced the difficulty of sampling.

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Abstract

The utility model discloses an earth surface matrix staged sampling device which is provided with a driving handle, a first driving piece and a sampling barrel, a driving cavity is formed in the driving handle, a fixed shaft seat is installed at the bottom of the driving handle, a spiral drilling piece is installed at the bottom of the fixed shaft seat, and a vertical cavity is formed in the spiral drilling piece in the vertical direction. The first driving part drives the spiral drilling part to rotate, a sampling cavity is formed in the sampling barrel, a feeding port is formed in the bottom of the sampling barrel, the top end of the sampling barrel extends into the driving cavity, a second driving part is arranged in the driving cavity, and the second driving part drives the sampling barrel to descend to the bottom of the spiral drilling part so as to collect soil scattered by the spiral drilling part. According to the soil sampling device, the threaded drilling part and the sampling barrel are of a movable connection structure, the threaded drilling part can firstly enter the soil to scatter the soil and then is downwards placed into the sampling barrel, and in the process of pressing the sampling barrel downwards, the scattered soil sample enters the sampling cavity, so that the sampling difficulty is reduced, and the soil sample collected at a time is increased.

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Description

Technical Field

[0001] The utility model relates to the technical field of surface matrix sampling, in particular to a surface matrix stage sampling device. Background Art

[0002] Soil is composed of solid, liquid and gas phases, including minerals, organic matter produced by the decomposition of animal and plant residues, water and air. In order to protect the soil from environmental pollution, and before reclaiming land and implementing agricultural projects, it is necessary to test the soil parameters. Soil sampling is one of the important basic tasks of scientific and technological workers engaged in environmental and ecological research. The accurate and appropriate collection of soil samples is directly related to the accuracy of related research and the reliability of data.

[0003] When conducting a land surface matrix test, it is necessary to sample and test the soil in the soil layer through a sampling device. Usually, the sampling device uses a drill rig to drill the drill into the soil and guide the soil sample into the cavity for removal.

[0004] However, in the prior art, when a threaded drill bit is used to drill into the soil, the soil in the area where the drill bit is vertically facing downward is pushed to both sides so that the threaded drill bit continues to move downward. The soil moves away from the threaded drill bit under the thrust of the threaded drill bit, resulting in a small amount of soil sampled and insufficient soil samples collected at one time. Utility Model Content

[0005] To this end, the utility model provides a surface matrix stage sampling device, which effectively solves the problem in the prior art that when a threaded drill bit is used to drill into the soil, the soil in the area where the drill bit is vertically facing downward is pushed to both sides, and the soil moves away from the threaded drill bit under the thrust of the threaded drill bit, resulting in a small amount of sampled soil and insufficient soil samples collected at one time.

[0006] In order to solve the above technical problems, the utility model specifically provides the following technical solutions: a surface matrix stage sampling device, comprising:

[0007] A driving handle, in which a driving cavity is arranged, a fixed shaft seat is installed at the bottom of the driving handle, a spiral drill is installed at the bottom of the fixed shaft seat, and a vertical cavity is formed on the spiral drill along the vertical direction;

[0008] A first driving member, disposed in the driving cavity, the first driving member drives the auger member to rotate;

[0009] A sampling cylinder is movably arranged in the vertical cavity, a sampling cavity is arranged in the sampling cylinder, and a material inlet is formed at the bottom of the sampling cylinder;

[0010] The top end of the sampling tube extends into the driving cavity, and a second driving member is provided in the driving cavity. The second driving member drives the sampling tube to descend to the bottom of the auger member to collect soil broken up by the auger member.

[0011] Further,

[0012] The auger element includes a spiral strip and a mounting post connected to the upper end of the spiral strip;

[0013] At least half of the spiral surface of the spiral strip is fitted and connected to the bottom of the mounting column, and a hollow cavity is formed in the mounting column. The hollow cavity and the cavity formed between the central axis of the spiral strip and the inner wall of the spiral strip are combined to form the vertical cavity;

[0014] Wherein, the mounting column passes through the fixed shaft seat.

[0015] Further,

[0016] The first driving member includes a first driving motor disposed in the driving cavity and a driving gear disposed at an output end of the first driving motor;

[0017] A transmission gear is arranged at the top end of the mounting column, the bottom end of the transmission gear abuts against the fixed shaft seat, and the transmission gear meshes with the driving gear.

[0018] Further,

[0019] The second driving member comprises a second driving motor disposed in the driving cavity and a threaded column disposed at an output end of the second driving motor;

[0020] The inner wall of the top end of the sampling tube is provided with an internal thread, and the internal thread cooperates with the threaded column.

[0021] Further,

[0022] The sampling tube is provided with a pointed tip.

[0023] Further,

[0024] The outer wall of the sampling tube is provided with a limiting groove along the vertical direction, and the fixed shaft seat is provided with a protrusion, and the protrusion is slidably arranged in the limiting groove.

[0025] Compared with the prior art, the utility model has the following beneficial effects:

[0026] In the utility model, the threaded drill and the sampling tube are two movably connected structures. The threaded drill can first enter the soil to break up the soil, and then be placed downward into the sampling tube. In the process of pressing down the sampling tube, the broken up soil sample enters the sampling cavity naturally, which greatly reduces the difficulty of sampling and increases the soil samples collected at one time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0028] Figure 1 A schematic diagram of the structure of a surface matrix stage sampling device provided by an embodiment of the utility model;

[0029] Figure 2 A schematic diagram of the structure of a sampling tube moving downward for sampling in a surface matrix stage sampling device provided by an embodiment of the utility model;

[0030] Figure 3 It is a schematic diagram of the structure of the auger and the sampling tube in the embodiment of the utility model;

[0031] Figure 4 It is a structural schematic diagram of the sampling tube in the embodiment of the utility model;

[0032] Figure 5 It is a schematic diagram of the structure of the spiral strip in the embodiment of the utility model.

[0033] The numbers in the figure represent the following:

[0034] 1-driving handle; 2-first driving member; 3-driving chamber; 4-fixed shaft seat; 5-auger member; 6-vertical chamber; 7-sampling tube; 8-sampling chamber; 9-second driving member; 10-feeding port; 11-tip; 12-limiting groove; 13-bump;

[0035] 21-driving gear; 22-transmission gear;

[0036] 51- spiral strip; 52- mounting column;

[0037] 91-Threaded post. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] like Figure 1 and Figure 2 , Figure 4 As shown, the utility model provides a surface matrix stage sampling device, which includes a driving handle 1, a first driving member 2, an auger member 5 and a sampling tube 7.

[0040] A driving cavity 3 is provided in the driving handle 1 . A fixed shaft seat 4 is installed at the bottom of the driving handle 1 . A spiral drill member 5 is installed at the bottom of the fixed shaft seat 4 . The spiral drill member 5 forms a vertical cavity 6 along the vertical direction.

[0041] The first driving member 2 is disposed in the driving chamber 3 , and the first driving member 2 drives the auger member 5 to rotate.

[0042] The sampling tube 7 is movably disposed in the vertical cavity 6 . A sampling cavity 8 is disposed in the sampling tube 7 . A material inlet 10 is formed at the bottom of the sampling tube 7 .

[0043] The top end of the sampling tube 7 extends into the driving chamber 3 , and a second driving member 9 is provided in the driving chamber 3 . The second driving member 9 drives the sampling tube 7 to descend to the bottom of the auger member 5 to collect the soil dispersed by the auger member 5 .

[0044] In the utility model, the threaded drill 5 and the sampling tube 7 are two movably connected structures. The threaded drill 5 can first enter the soil to break up the soil, and then be placed downward into the sampling tube 7. In the process of pressing down the sampling tube 7, the broken soil sample enters the sampling cavity 8 naturally, which greatly reduces the difficulty of sampling and increases the soil samples collected at one time.

[0045] In the present invention, the auger 5 adopts the following preferred embodiments, such as Figure 3 and Figure 5 As shown, the spiral drill component 5 includes a spiral strip 51 and a mounting column 52 connected to the upper end of the spiral strip 51. At least half a circle of the spiral surface of the spiral strip 51 is fitted and connected to the bottom of the mounting column 52. A hollow cavity is formed in the mounting column 52. The hollow cavity and the cavity formed between the central axis of the spiral strip 51 and the inner wall of the spiral strip 51 are combined to form a vertical cavity. The mounting column 52 passes through the fixed shaft seat 4.

[0046] The threaded strip 51 is a single structure, and a vertical cavity is formed inside the threaded strip, through which the sampling tube 7 can pass. That is to say, in the process of drilling into the soil, the soil to be sampled is preliminarily broken up to facilitate the subsequent downward movement of the sampling tube 7 for sampling.

[0047] In the present invention, there is a position difference between the threaded strip 51 and the sampling tube 7, and there is a height difference at the bottom. In this case, the first driving member 2 and the second driving member 9 are driven successively, the threaded strip 51 breaks up the soil below, and the sampling tube 7 moves downward accordingly to sample the broken soil. It is not necessary to wait until the spiral strip 51 completely enters the soil before moving the sampling tube 7 downward. The sampling tube 7 can also move downward during the downward movement of the spiral strip 51. It is only necessary to keep the bottom of the sampling tube 7 higher than the height of the bottom of the spiral strip 51 during the downward movement of the spiral strip 51. When the spiral strip 51 gradually stops moving downward, the sampling tube 7 gradually moves downward to be almost flush with the bottom of the spiral strip 51, and the sampling is completed this time.

[0048] In the prior art, the threaded strip and the column are usually an integrated structure. In this method of rotating downward to drill the soil, the soil is usually moved outward under the rotation centrifugal force of the drill bit, resulting in less soil being sampled. In the utility model, the soil is first broken up by the threaded strip 51, and then the downward pressure sampling method of moving the sampling tube 7 downward is more convenient for soil sampling.

[0049] The first driving member 2 drives the threaded drill member 5 to rotate. The first driving member 2 adopts the following preferred embodiment. The first driving member 2 includes a first driving motor arranged in the driving cavity 3, and a driving gear 21 arranged at the output end of the first driving motor. A transmission gear 22 is arranged at the top of the mounting column 52, and the bottom end part of the transmission gear 22 abuts on the fixed shaft seat 4, and the transmission gear 22 is meshed with the driving gear 21.

[0050] The first driving motor drives the driving gear 21 to rotate, thereby driving the transmission gear 22 to rotate, driving the mounting column 52 to rotate, and the spiral bar 51 follows the rotation. During the rotation of the spiral bar 51, it is vertically pressed downward, and the spiral bar 51 is gradually embedded in the soil, breaking up the soil in the sampling area and gradually moving downward.

[0051] The second driving member 9 can drive the sampling tube 7 to move downward. The second driving member 9 adopts the following preferred embodiment. The second driving member 9 includes a second driving motor arranged in the driving cavity 3 and a threaded column 91 arranged at the output end of the second driving motor. The inner wall of the top end of the sampling tube 7 is provided with an internal thread, and the internal thread cooperates with the threaded column 91.

[0052] The second driving motor drives the threaded column 91 to rotate, and the sampling tube 7 is driven to gradually move downward under the rotation of the threaded column 91 .

[0053] In order to enable the sampling tube 7 to be lifted and lowered when the threaded column 91 rotates, the following design is made in the utility model: a limiting groove 12 is provided on the outer wall of the sampling tube 7 in the vertical direction, and a protrusion 13 is provided on the fixed shaft seat 4. The protrusion 13 is slidably arranged in the limiting groove 12. The protrusion 13 can only slide in the limiting groove 12. Therefore, the sampling tube 7 can only be lifted and lowered but not rotated. Under the rotation of the threaded column 91, the sampling tube 7 can be driven to descend.

[0054] In order to reduce the resistance encountered by the sampling tube 7 during the downward movement, a pointed tip 11 is provided at the bottom end of the sampling tube 7 .

[0055] In summary, the main implementation process of the utility model is:

[0056] Grip the driving handle 1 tightly so that the threaded strip 51 is vertically downward facing the sampling area;

[0057] The corresponding button of the driving handle 1 is started, and the first driving motor is driven to drive the driving gear 21 to rotate, thereby driving the transmission gear 22 to rotate, driving the mounting column 52 to rotate, and the spiral bar 51 follows the rotation. During the rotation of the spiral bar 51, it is vertically pressed down, and the spiral bar 51 is gradually embedded in the soil, breaking up the soil in the sampling area and gradually moving downward;

[0058] After a period of time, the second driving motor drives the threaded column 91 to rotate, and the sampling tube 7 is driven to gradually move downward under the rotation of the threaded column 91. In the process of pressing down the sampling tube 7, the scattered soil sample enters the sampling cavity 8 to achieve soil sampling;

[0059] After the sampling is completed, the second drive motor can be driven in reverse to drive the sampling tube 7 to gradually reset. During the resetting process, the first drive motor is driven in reverse to drive the spiral strip 51 to discharge the soil. During the removal process, the bottom of the spiral strip 51 is in a rotating and stirring state, which can cause the re-dispersed soil to block the soil sample in the sampling chamber 8 from falling from the feed port 10.

[0060] When the spiral strip 51 is taken out, the whole structure is tilted to prevent part of the soil sample from falling from the feed opening 10 .

[0061] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A surface matrix stage sampling device, characterized in that: have: A driving handle (1) is provided with a driving cavity (3) therein, a fixed shaft seat (4) is installed at the bottom of the driving handle (1), a spiral drill member (5) is installed at the bottom of the fixed shaft seat (4), and a vertical cavity (6) is formed on the spiral drill member (5) along the vertical direction; A first driving member (2) is disposed in the driving chamber (3), wherein the first driving member (2) drives the auger member (5) to rotate; A sampling cylinder (7) is movably arranged in the vertical cavity (6), a sampling cavity (8) is arranged in the sampling cylinder (7), and a material inlet (10) is formed at the bottom of the sampling cylinder (7); The top end of the sampling tube (7) extends into the driving chamber (3), and a second driving member (9) is provided in the driving chamber (3). The second driving member (9) drives the sampling tube (7) to descend to the bottom of the auger member (5) to collect soil dispersed by the auger member (5).

2. The surface matrix stage sampling device according to claim 1, characterized in that: The auger element (5) comprises a spiral strip (51) and a mounting post (52) connected to the upper end of the spiral strip (51); At least half of the spiral surface of the spiral strip (51) is fitted and connected to the bottom of the mounting column (52), and a hollow cavity is formed in the mounting column (52). The hollow cavity and the cavity formed between the central axis of the spiral strip (51) and the inner wall of the spiral strip (51) are combined to form the vertical cavity (6); Wherein, the mounting column (52) passes through the fixed shaft seat (4).

3. The surface matrix stage sampling device according to claim 2, characterized in that: The first driving member (2) comprises a first driving motor arranged in the driving cavity (3) and a driving gear (21) arranged at an output end of the first driving motor; A transmission gear (22) is arranged at the top end of the mounting column (52), the bottom end portion of the transmission gear (22) abuts against the fixed shaft seat (4), and the transmission gear (22) meshes with the driving gear (21).

4. The surface matrix stage sampling device according to claim 3, characterized in that: The second driving member (9) comprises a second driving motor arranged in the driving cavity (3) and a threaded column (91) arranged at an output end of the second driving motor; The inner wall of the top end of the sampling tube (7) is provided with an internal thread, and the internal thread cooperates with the threaded column (91).

5. The surface matrix stage sampling device according to claim 4, characterized in that: The sampling tube (7) is provided with a pointed head (11).

6. The surface matrix stage sampling device according to claim 4, characterized in that: The outer wall of the sampling tube (7) is provided with a limiting groove (12) in the vertical direction, and the fixed shaft seat (4) is provided with a protrusion (13), and the protrusion (13) is slidably arranged in the limiting groove (12).