Soil sample preparation device

Abstract

The utility model relates to the technical field of soil sample preparation, and discloses a soil sample preparation device, which comprises an upper frame and a lower frame which are mutually inserted, and a divider arranged in the upper frame and the lower frame, the upper frame and the lower frame are both of a cylindrical structure, the divider comprises four divider cylinders, the cross sections of the four divider cylinders are fan-shaped, and the upper frame and the lower frame are arranged in the upper frame and the lower frame. And the four separating cylinders can be spliced into a cylinder structure. According to the soil sample separation device, after the soil sample is turned over, the separation condition of the soil sample can be directly observed, and the non-uniform separation condition caused by operation errors is avoided, so that the effect of equally dividing the soil can be realized, and the soil separation accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of soil sample preparation, in particular to a soil sample preparation device. Background Art

[0002] The National Soil Environment Monitoring Network's Technical Regulations on Soil Sample Preparation, Circulation and Storage clearly states in its regulations on discarding and packaging: "After the samples are mixed, they should be discarded and packaged using the four-part method according to different work purposes, and the original sample preparation record form should be filled in in a timely manner."

[0003] The patent with the announcement number CN220120496U discloses a four-partitioning extractor for preparing soil samples. When in use, the original soil is put into the upper frame, shaken to mix, and flattened. Then the extractor is inserted into the upper frame, and the lower frame is inserted on the upper frame. The upper frame, the extractor and the lower frame are fastened and turned upside down together. A part of the soil sample in the upper frame enters the sampler, and a part flows into the lower frame through the hollow part at the bottom of the extractor that is not blocked by the bottom plate. The sample in the extractor is poured into the upper frame, and then poured into the sample bag, and then the soil sample in the lower frame is poured into the sample bag to complete the soil extraction. Due to the overturning during the operation, if the extractor is not tightly combined with the upper frame during the overturning process, uneven separation is likely to occur, and the soil sample is divided into two parts after the overturning, and the result of soil separation cannot be observed intuitively.

[0004] In view of this, how to change the current situation that soil separation cannot be observed intuitively and uneven separation is prone to occur has become a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] The utility model aims to provide a soil sample preparation device to overcome the above-mentioned shortcomings.

[0006] In order to achieve the above purpose, the technical solution of the utility model is:

[0007] A soil sample preparation device comprises an upper frame and a lower frame which are plugged into each other, and a separator arranged inside the upper frame and the lower frame, wherein the upper frame and the lower frame are both cylindrical structures, and the separator comprises four separation cylinders, the cross sections of the four separation cylinders are fan-shaped, and the four separation cylinders can be assembled into a cylindrical structure.

[0008] Furthermore, the bottom surface of the separation cylinder is provided with a first positioning groove and a second positioning groove in a fan-shaped shape, the first positioning groove and the second positioning groove are coaxially arranged, the first positioning groove is located on a side of the second positioning groove close to its axis, and a first blind hole is arranged on the outer ring wall of the first positioning groove;

[0009] The extractor further includes a connecting component, which includes a bottom plate, and a first convex portion and a second convex portion respectively extending upward from the middle and the edge of the bottom plate. The first convex portion and the second convex portion respectively correspond to and match with the first positioning groove and the second positioning groove one by one. A plurality of second blind holes are arranged on the outer side wall of the first convex portion. A positioning pin is slidably connected in the second blind hole, and the plurality of positioning pins are detachably connected to the plurality of first blind holes.

[0010] Further, the extractor further includes an elastic member arranged in the second blind hole. Two ends of the elastic member are respectively connected to the end wall of the second blind hole and one end of the positioning pin. The elastic member is used for driving the other end of the positioning pin to protrude from the second blind hole.

[0011] Further, the extractor further includes:

[0012] A third positioning groove arranged on the bottom surface of the extraction cylinder. The third positioning groove is coaxially arranged with the second positioning groove and is located on the periphery of the second positioning groove;

[0013] An extraction magnet fixedly connected to the other end of the positioning pin; and

[0014] An annular magnet detachably connected to the third positioning groove and fixedly connected to the inner bottom of the outer frame. The annular magnet is arranged opposite to the extraction magnet, and the magnetic poles of the opposite surfaces are the same. The repulsive force between the annular magnet and the extraction magnet can overcome the elastic force of the elastic member so that the extraction magnet and the positioning pin are embedded in the second blind hole.

[0015] Further, a sliding groove is arranged on the outer ring wall of the first positioning groove. The sliding groove is provided with an inclined surface, and the inclined surface inclines from bottom to top in a direction close to the axis of the second positioning groove. The extraction magnet is selectively slidably connected to the sliding groove.

[0016] Further, a plurality of wedge-shaped protrusions are arranged on the connecting component. The wedge-shaped protrusions correspond to and match with the sliding grooves one by one.

[0017] Further, a first handle and a second handle are respectively fixedly connected to the outer side walls of the upper frame and the lower frame.

[0018] Further, the elastic member is a compression spring.

[0019] The utility model has at least the following advantages compared with the prior art:

[0020] In use, put the undisturbed soil into the upper frame, shake it evenly and level it. Then, insert the four sampling cylinders upside down into the upper frame, and then insert the lower frame into the upper frame. Fasten the upper frame, sampling cylinders and lower frame, and turn them over at the same time. The soil sample in the upper frame is divided into four parts and enters the four sampling cylinders respectively. By observing whether the heights of the soil samples in the four sampling cylinders are the same, if they are not the same, repeat the above operations. If the heights are the same, pour the soil in the two diagonal sampling cylinders into the sample bag, and then pour the soil samples in the remaining two sampling cylinders into another sample bag to complete the sampling of the soil.

[0021] After the turnover of the utility model is completed, the separation situation of the soil sample can be directly observed, avoiding the occurrence of uneven separation caused by operation errors, so as to achieve the effect of equal division of the soil and improve the accuracy of soil sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 is an exploded view of the soil sample preparation device of the present utility model;

[0024] Figure 2 is an assembly schematic diagram of the sampling cylinder and the connecting component;

[0025] Figure 3 is a structural schematic diagram of the sampling cylinder;

[0026] Figure 4 is a cross-sectional view of the sampling cylinder;

[0027] Figure 5 is an overall structural schematic diagram of the soil sample preparation device of the present utility model;

[0028] Figure 6 is a cross-sectional view of the soil sample preparation device of the present utility model.

[0029] Reference numerals: 1, upper frame; 2, first handle; 3, lower frame; 4, second handle; 5, sampling cylinder; 6, first positioning groove; 7, first blind hole; 8, sliding cutting groove; 9, second positioning groove; 10, third positioning groove; 11, bottom plate; 12, first convex part; 13, second blind hole; 14, positioning pin; 15, elastic member; 16, sampling magnet; 17, second convex part; 18, annular magnet; 19, wedge-shaped convexity. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0031] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Referring to Figure 1-6 , the present utility model provides a soil sample preparation device, which includes an upper frame 1 and a lower frame 3 that are inserted into each other, and a sampler disposed inside the upper frame 1 and the lower frame 3. Both the upper frame 1 and the lower frame 3 are cylindrical structures. The sampler includes four sampling cylinders 5. The cross-sections of these four sampling cylinders 5 are fan-shaped, and the openings of the sampling cylinders 5 face upward and can be assembled into a cylindrical structure.

[0033] During use, the undisturbed soil is placed into the upper frame 1, shaken and mixed evenly and then leveled. Subsequently, the four sampling cylinders 5 are inserted upside down into the upper frame 1, and then the lower frame 3 is inserted into the upper frame 1. The upper frame 1, the sampling cylinders 5 and the lower frame 3 are fastened and turned over at the same time. The soil sample in the upper frame 1 is divided into four parts and enters the four sampling cylinders 5 respectively. By observing whether the heights of the soil samples in the four sampling cylinders 5 are the same, if they are not the same, the above operations are repeated. If the heights are the same, the soil in the two diagonal sampling cylinders 5 is poured into the sample bag, and then the soil samples in the remaining two sampling cylinders 5 are poured into another sample bag to complete the sampling of the soil.

[0034] After the turnover of the present utility model, the separation situation of the soil sample can be directly observed, avoiding the occurrence of uneven separation caused by operation errors, so as to achieve the effect of equal division of the soil and improve the accuracy of soil sampling.

[0035] For the convenience of operating the upper frame 1 and the lower frame 3, a first handle 2 and a second handle 4 are respectively fixedly connected to the outer side walls of the upper frame 1 and the lower frame 3.

[0036] Preferably, a fan-shaped first positioning groove 6 and a second positioning groove 9 are arranged on the bottom surface of the sampling cylinder 5. The first positioning groove 6 and the second positioning groove 9 are coaxially arranged. The first positioning groove 6 is located on the side of the second positioning groove 9 close to the axis, and a first blind hole 7 is arranged on its outer ring wall.

[0037] The extractor further includes a connection component, which includes a bottom plate 11, and a first convex portion 12 and a second convex portion 17 respectively extending upward from the middle and the edge of the bottom plate 11. The first convex portion 12 and the second convex portion 17 respectively correspond to and match the first positioning groove 6 and the second positioning groove 9 one by one. A plurality of second blind holes 13 are arranged on the outer side wall of the first convex portion 12, and positioning pins 14 are slidably connected in the second blind holes 13, and these positioning pins 14 are detachably connected to a plurality of first blind holes 7.

[0038] In the present utility model, a first blind hole 7 is evenly arranged in the first positioning groove 6 of each extraction cylinder 5, and four second blind holes 13 are arranged on the first convex portion 12. When the positioning pin 14 is embedded in the first blind hole 7, the effect of connecting the extraction cylinder 5 and the connection component together can be achieved, and then the extraction cylinders 5 can be formed into a whole, which is convenient for the operation process.

[0039] Preferably, the extractor further includes an elastic member 15 arranged in the second blind hole 13. The elastic member 15 is preferably a compression spring, and two ends of the elastic member 15 are respectively connected to the end wall of the second blind hole 13 and one end of the positioning pin 14, and are used to drive the other end of the positioning pin 14 to protrude from the second blind hole 13.

[0040] Optionally, a sliding groove 8 is arranged on the outer ring wall of the first positioning groove 6. The sliding groove 8 is provided with an inclined surface, and the inclined surface is inclined from bottom to top in a direction close to the axis of the second positioning groove 9. The extraction magnet 16 is selectively slidably connected to the sliding groove 8.

[0041] Preferably, the extractor further includes the following structure: a third positioning groove 10 is arranged on the bottom surface of the extraction cylinder 5. The third positioning groove 10 is coaxially arranged with the second positioning groove 9 and is located on its periphery; the other end of the positioning pin 14 is fixedly connected with an extraction magnet 16; an annular magnet 18 is detachably connected to the third positioning groove 10, and the annular magnet 18 is fixedly connected to the inner bottom of the outer frame. The annular magnet 18 and the extraction magnet 16 are arranged oppositely, and the magnetic poles of the opposite surfaces are the same. The repulsive force between the annular magnet 18 and the extraction magnet 16 can overcome the elastic force of the elastic member 15 so that the extraction magnet 16 and the positioning pin 14 are embedded in the second blind hole 13.

[0042] Optionally, a plurality of wedge-shaped protrusions 19 are arranged on the connection component, and these wedge-shaped protrusions 19 correspond to and match the sliding grooves 8 one by one.

[0043] The working principle of the present utility model:

[0044] Before use, the four dispensing tubes 5 are turned upside down and assembled into a cylindrical structure, and the four dispensing tubes 5 are connected by using a connecting assembly, so that the first protrusion 12 and the second protrusion 17 are respectively opposite to the first positioning groove 6 and the second positioning groove 9, so that the inclined surface of the sliding groove 8 is opposite to the dispensing magnet 16, and the connecting assembly and the four dispensing tubes 5 are further brought close to each other, and the dispensing magnet 16 slides relative to the sliding groove 8, which can drive the elastic member 15 to be compressed, and the dispensing magnet 16 and the positioning are further embedded in the second blind hole 13, and the wedge-shaped protrusion 19 slides relative to the sliding groove 8. When the second blind hole 13 is opposite to the first blind hole 7, the other end of the positioning pin 14 is embedded in the first blind hole 7 under the action of the elastic member 15 to realize the connection process of the four dispensing tubes 5.

[0045] Put the original soil into the upper frame 1, shake to mix and flatten it, then insert the four separation tubes 5 into the upper frame 1 upside down, and then insert the lower frame 3 on the upper frame 1, fasten the upper frame 1, the separation tube 5 and the lower frame 3, at this time the annular magnet 18 is embedded in the third positioning groove 10, at this time the upper frame 1, the separator and the lower frame 3 are turned over at the same time, the soil sample in the upper frame 1 is divided into four parts and enters the four separation tubes 5 and the sampler respectively, by observing whether the heights of the soil samples in the four separation tubes 5 are the same, if not, repeat the above operation, if the heights are the same, pour the soil in the two diagonal separation tubes 5 into the sample bag, and then pour the soil samples in the remaining two separation tubes 5 into another sample bag to complete the soil separation.

[0046] It should be noted that after the annular magnet 18 is embedded in the third positioning groove 10, the annular magnet 18 and the separation magnet 16 are arranged opposite to each other, and a mutual repulsive force is formed between the annular magnet 18 and the separation magnet 16, which can overcome the elastic force of the elastic member 15, so that the separation magnet 16 and the positioning pin 14 are embedded in the second blind hole 13 again. At this time, the connection between the connecting assembly and the separation tube 5 can be released, and the single separation tube 5 can be taken out from the outer frame to achieve the effect of exporting the soil sample.

[0047] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A soil sample preparation device, comprising an upper frame (1) and a lower frame (3) plugged into each other, and a separator arranged inside the upper frame (1) and the lower frame (3), wherein the upper frame (1) and the lower frame (3) are both cylindrical structures, characterized in that: The extractor comprises four extracting cylinders (5), the cross sections of the four extracting cylinders (5) are fan-shaped, and the four extracting cylinders (5) can be assembled into a cylindrical structure.

2. The soil sample preparation device according to claim 1, characterized in that: The bottom surface of the separation cylinder (5) is provided with a first positioning groove (6) and a second positioning groove (9) in a fan-shaped shape, the first positioning groove (6) and the second positioning groove (9) are coaxially arranged, the first positioning groove (6) is located on a side of the second positioning groove (9) close to its axis, and a first blind hole (7) is arranged on the outer ring wall of the first positioning groove (6); The extractor further comprises a connection assembly, which comprises a bottom plate (11), and a first protrusion (12) and a second protrusion (17) respectively extending upward from the middle and edge of the bottom plate (11), wherein the first protrusion (12) and the second protrusion (17) respectively correspond to the first positioning groove (6) and the second positioning groove (9), and the outer wall of the first protrusion (12) is provided with a plurality of second blind holes (13), and the second blind holes (13) are slidably connected with positioning pins (14), and the plurality of positioning pins (14) are detachably connected with the plurality of first blind holes (7).

3. The soil sample preparation device according to claim 2, characterized in that: The dispenser further comprises an elastic member (15) arranged in the second blind hole (13), the two ends of the elastic member (15) being respectively connected to the end wall of the second blind hole (13) and one end of the positioning pin (14), and the elastic member (15) being used to drive the other end of the positioning pin (14) to protrude out of the second blind hole (13).

4. The soil sample preparation device according to claim 3, characterized in that: The extractor also includes: A third positioning groove (10) is arranged on the bottom surface of the separation tube (5), wherein the third positioning groove (10) is arranged coaxially with the second positioning groove (9) and is located on the peripheral side of the second positioning groove (9); a dispensing magnet (16) fixedly connected to the other end of the positioning pin (14); and An annular magnet (18) is detachably connected to the third positioning groove (10) and fixedly connected to the inner bottom of the outer frame. The annular magnet (18) is arranged opposite to the separation magnet (16), and the magnetic poles of the opposite surfaces are the same. The repulsive force between the annular magnet (18) and the separation magnet (16) can overcome the elastic force of the elastic member (15), so that the separation magnet (16) and the positioning pin (14) are embedded in the second blind hole (13).

5. The soil sample preparation device according to claim 4, characterized in that: A sliding groove (8) is arranged on the outer ring wall of the first positioning groove (6), and the sliding groove (8) is arranged with an inclined surface, and the inclined surface is inclined from bottom to top toward the axis direction of the second positioning groove (9), and the separation magnet (16) is selectively slidably connected with the sliding groove (8).

6. The soil sample preparation device according to claim 5, characterized in that: The connection assembly is provided with a plurality of wedge-shaped protrusions (19), and the wedge-shaped protrusions (19) are matched with the sliding grooves (8) in a one-to-one correspondence.

7. The soil sample preparation device according to claim 6, characterized in that: The outer side walls of the upper frame (1) and the lower frame (3) are respectively fixedly connected with a first handle (2) and a second handle (4).

8. The soil sample preparation device according to claim 7, characterized in that: The elastic member (15) is a compression spring.

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