CN217006419U - Soil sampling device suitable for nuclear magnetic resonance - Google Patents

Abstract

The utility model discloses a soil sampling device suitable for nuclear magnetic resonance, which comprises a pressurizing support, wherein a fixing ring is connected to the center of the top of the pressurizing support, the fixing ring is provided with internal threads, the fixing ring is matched and connected with a central rod with external threads, the lower part of the central rod is connected with a cylindrical compaction block, the upper part of the central rod is connected with a cross rod, a lower thin-wall soil sampler is placed at the bottom of the pressurizing support, the central shafts of the lower thin-wall soil sampler and the cylindrical compaction block are positioned on the same straight line, an upper thin-wall soil sampler is matched and connected to the lower thin-wall soil sampler, and the device further comprises a cylindrical mold matched with the nuclear magnetic resonance and matched with the lower thin-wall soil sampler. The method is convenient to operate, can accurately control the thickness of the soil layer, is convenient to control the requirement to manufacture different soil layer distributions, improves the precision, further can avoid the mould from being broken due to direct pressing into the mould, reduces the loss, and is convenient to manufacture the cylindrical soil sample suitable for nuclear magnetic resonance.

Description

Soil sampling device suitable for nuclear magnetic resonance

Technical Field

The utility model relates to a soil sampling instrument, in particular to a soil sampling device suitable for nuclear magnetic resonance.

Background

At present, thin-wall soil sampler has been gradually popularized, and the thin-wall soil sampler mainly comprises four types: open, free piston, fixed piston, and hydraulic. As is well known, the factors influencing the quality of the soil sample are many, and the structure of the soil sampler and the sampling operation process greatly influence the quality of the soil sample. If the operation of the soil sampling process is unreasonable, high-quality soil samples cannot be taken out even if the specifications, technical parameters and other aspects of the soil sampler meet the requirements. To take out a soil sample with less disturbance, the soil sampler is selected correctly. The open soil sampler is simple in structure and convenient to operate, the soil sampler consists of a sampling head and a thin-walled tube, the main structure is a one-way ball valve, and the ball valve part is usually blocked by sludge or sanded due to residue at the bottom of a hole, so that the sampling is mainly performed by friction of the tube wall, and a soil sample is often moved and falls off easily. The free piston type soil sampler has the same structure as a fixed type soil sampler except that no piston rod extends to the ground surface to be connected with the fixed part, the operation is simple, but after the soil sample is pressed in, the position of the piston cannot be accurately grasped, and when the soil sampler is pressed in, the piston is driven by the free piston type soil sampler to move downwards, so that the soil sample in the pipe can be extruded. The fixed piston type thin-wall soil sampler overcomes the defect that an open type soil sampler is easy to drop samples, has high sampling rate and good sampling quality, but when in sampling, the soil sampling pipe is pressed into the soil through the drill rod, and because the piston is fixed, vacuum is generated between the piston and the soil sample, the soil sampling rate is ensured, but the operation is troublesome. The hydraulic thin-wall soil sampler is suitable for deep sampling, obviously has more trouble operation to the more convenient soil sample in laboratory, has great limitation, and from the structure, the design is very reasonable, but its structure is more complicated, and the installation is dismantled also more trouble.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a soil sampling device suitable for nuclear magnetic resonance, which overcomes the defects in the prior art, is convenient to operate, can accurately control the thickness of soil layers, is convenient to control different soil layer distributions required to be manufactured, improves the precision, further can avoid the phenomenon that the mould is broken when being directly pressed into the mould, reduces the loss, and is convenient to manufacture a cylindrical soil sample suitable for nuclear magnetic resonance.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a soil sampling device suitable for nuclear magnetic resonance, includes the pressurization support, pressurization support top center is connected with the retainer plate, the retainer plate is provided with the internal thread, just the retainer plate is connected with the well core rod cooperation of outband screw thread, well core rod's sub-unit connection has cylinder compaction piece, well core rod's upper portion is connected with the horizontal pole, thin wall geotome has been placed down to the bottom of pressurization support, thin wall geotome and the center pin of cylinder compaction piece are located same straight line down, the cooperation is connected with thin wall geotome down on the thin wall geotome, still include with the cylinder mould that matches of using with nuclear magnetic resonance with thin wall geotome down.

Furthermore, the cylindrical compaction block is provided with a directional hole, and the lower part of the central rod is in fit connection with the directional hole.

Furthermore, a fixing groove is formed in the directional hole, a fixing column is arranged on the lower portion of the central rod, and the lower portion of the central rod is connected with the directional hole through the fixing column and the fixing groove in a matched mode.

Furthermore, the upper part of the lower thin-wall soil sampler and the upper part of the upper thin-wall soil sampler are provided with mutually matched clamping grooves.

Further, the inner diameter of the lower thin-wall geotome is the same as that of the cylindrical mold.

Furthermore, scales are marked on the outer side of the cylindrical compaction block.

Compared with the prior art, the utility model has the following beneficial technical effects:

the soil sampler is used for firstly pressing a soil sample into a lower thin-wall soil sampler with a clamping groove, the upper part of the lower thin-wall soil sampler is provided with a detachable upper thin-wall soil sampler with a clamping groove, the finally compacted soil layer can be more precise, and the soil sample is pressed into a cylindrical mold matched with nuclear magnetic resonance through a cylindrical compaction block with a directional hole to obtain a complete soil sample, so that the problem that the soil sample is easily damaged and economic loss is caused when being directly pressed into the mold is avoided.

Furthermore, the cylindrical compaction block is marked with scales, so that the consolidation height of the soil sample of the sample can be more accurately determined, and the density of the sample can be further determined.

Furthermore, the upper thin-wall soil sampler with the clamping groove is matched with the lower thin-wall soil sampler with the clamping groove for use, so that a soil sample is not easy to scatter, the soil amount is controlled, and a soil body is completely pressed into the lower thin-wall soil sampler with the clamping groove.

Furthermore, the inner diameter of a cylindrical die matched with nuclear magnetic resonance is consistent with the diameter of a cylindrical compaction block with a directional hole, so that the prepared soil sample is guaranteed to be more compact, and the test is smoother.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the pressurizing bracket of the present invention.

FIG. 3 is a schematic structural diagram of a cylindrical mold for nuclear magnetic resonance imaging.

FIG. 4 is a schematic view of the structure of the lower thin-wall geotome with the upper clamping groove of the utility model.

FIG. 5 is a schematic view of the structure of the upper thin-wall soil sampler with a lower clamping groove according to the present invention.

FIG. 6 is a schematic view of a cylindrical compact block with directional holes according to the present invention.

In the figure: 1-a pressure bracket; 2, a fixed ring; 3-a central rod; 4-a cross bar; 5, cylindrical compacting blocks; 6, installing a thin-wall soil sampler; 7, setting a thin-wall soil sampler; 8-cylindrical mold.

Detailed Description

The utility model is described in further detail below with reference to the figures and specific examples.

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the utility model described herein are capable of operation in sequences other than those illustrated or described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1 to 6, a soil sampling device suitable for nuclear magnetic resonance comprises a pressurizing support 1, wherein a fixed ring 2 is connected to the center of the top of the pressurizing support 1, the bottom of the pressurizing support 1 is flat, the fixed ring 2 is connected with a threaded central rod 3 in a matching manner, the height of the fixed ring can be freely adjusted, the lower portion of the threaded central rod 3 is provided with a protruding portion matched with a cylindrical compaction block 5 (made of iron) with a directional hole, the upper portion of the threaded central rod is connected with a cross rod 4, the cross rod 4 is conveniently rotated manually to drive the threaded central rod 3 so as to enable the cylindrical compaction block 5 with the directional hole to move downwards to compact a soil sample, a lower thin-wall soil sampler 7 with a clamping groove is placed at the bottom of the pressurizing support 1, the prepared soil sample is added into the lower thin-wall soil sampler 7 with the clamping groove, and the lower thin-wall soil sampler 7 with the clamping groove and the cylindrical compaction block 5 with the directional hole are positioned at the same center, if the soil sample is compacted to a certain height, the upper part of the lower thin-wall soil sampler 7 with the clamping groove is connected with the upper thin-wall soil sampler 6 with the clamping groove, the soil sample is further compacted, the upper thin-wall soil sampler 6 with the clamping groove is taken down after the compaction is finished, and the soil sample in the lower thin-wall soil sampler 7 with the clamping groove is pressed into a cylindrical mold 8 matched with nuclear magnetic resonance.

In the embodiment, scales are marked on the cylindrical compaction block 5 with the directional hole, so that the consolidation height of the soil sample of the test sample can be more accurately determined, and the density of the test sample can be further determined.

In this embodiment, the inner diameter of the cylindrical mold 8 matched with the nuclear magnetic resonance is consistent with the diameter of the cylindrical compaction block 5 with the directional hole, so that the prepared soil sample is ensured to be more compact, and the test is smoother.

In this embodiment, the upper thin-wall soil sampler 6 with the clamping groove is matched with the lower thin-wall soil sampler 7 with the clamping groove for use, so that a soil sample is not easy to scatter, the soil amount is controlled, and a soil body is completely pressed into the lower thin-wall soil sampler 7 with the clamping groove.

Before the device is used, a soil sample with calibrated water content is required to be prepared, then a proper soil layer consolidation height is selected according to different requirements of different tests on soil sample layering, the mass of a required soil body is calculated, a lower thin-wall soil sampler 7 with a clamping groove is placed at the bottom of a pressurizing bracket 1, the measured soil body is poured into the lower thin-wall soil sampler 7 with the clamping groove, a cylindrical compaction block 5 with a directional hole is placed in the lower thin-wall soil sampler 7 with the clamping groove, a threaded central rod 3 is rotated downwards to reach a certain height, the lower thin-wall soil sampler 7 and the cylindrical compaction block 5 with the directional hole are positioned on the same central point and continue to rotate downwards, the cylindrical compaction block 5 with the directional hole is enabled to downwards compact the soil body to an appointed scale line, the cylindrical compaction block 5 with the directional hole is taken out, the operation is repeated, and when the last layer of soil body is reached, an upper thin-wall soil sampler 6 with a clamping groove is required to be installed on the lower thin-wall soil sampler 7 with the clamping groove, then adding the final soil amount, compacting by using a cylindrical compaction block 5 with a directional hole, taking down an upper thin-wall soil sampler 6 with a clamping groove to obtain a full soil sample in a lower thin-wall soil sampler 7 with a clamping groove, placing a cylindrical mold 8 matched with the nuclear magnetic resonance at the bottom of a pressurizing bracket 1, placing the lower thin-wall soil sampler 7 with the clamping groove and full of the soil sample right above the cylindrical mold 8 matched with the nuclear magnetic resonance to align, pressing all the soil in the lower thin-wall soil sampler 7 with the clamping groove into the cylindrical mold 8 matched with the nuclear magnetic resonance by using the cylindrical compaction block 5 with the directional hole, and manually cutting the soil sample to meet the specific requirements of a nuclear magnetic resonance device.

Finally, it should be noted that: although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that various changes, modifications and equivalents can be made to the embodiments of the utility model without departing from the scope of the utility model as set forth in the claims.

Claims (6)

1. A soil sampling device suitable for nuclear magnetic resonance is characterized by comprising a pressurizing bracket (1), the center of the top of the pressurizing bracket (1) is connected with a fixed ring (2), the fixed ring (2) is provided with an internal thread, the fixed ring (2) is matched and connected with a central rod (3) with external threads, the lower part of the central rod (3) is connected with a cylindrical compaction block (5), the upper part of the central rod (3) is connected with a cross rod (4), the bottom of the pressurizing bracket (1) is provided with a lower thin-wall geotome (7), the lower thin-wall geotome (7) and the central shaft of the cylindrical compaction block (5) are positioned on the same straight line, the lower thin-wall geotome (7) is connected with an upper thin-wall geotome (6) in a matching way, and the lower thin-wall geotome (7) is matched with a cylindrical die (8) matched with nuclear magnetic resonance.

2. The device for taking a soil sample suitable for nuclear magnetic resonance according to claim 1, characterized in that the cylindrical compacted block (5) is provided with an orientation hole, and the lower part of the central rod (3) is in fit connection with the orientation hole.

3. The soil sampling device suitable for nuclear magnetic resonance as claimed in claim 2, wherein the orientation hole is provided with a fixing groove therein, the lower portion of the central rod (3) is provided with a fixing column, and the lower portion of the central rod (3) is connected with the orientation hole through the fixing column and the fixing groove in a matching manner.

4. The soil sampling device suitable for nuclear magnetic resonance as claimed in claim 1, wherein the upper part of the lower thin-wall soil sampler (7) and the upper part of the upper thin-wall soil sampler (6) are provided with mutually matched clamping grooves.

5. The soil sampling device suitable for NMR of claim 1, wherein the lower thin-walled sampler (7) has the same inner diameter as the cylindrical mold (8).

6. The soil sampling device suitable for NMR of claim 1, wherein the outside of the cylindrical compacted block (5) is marked with scales.

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