KR20230086831A - Sample crushing apparatus for analysis - Google Patents

Abstract

The present invention relates to a sample crushing device for analysis. The sample crushing device for analysis according to the present invention comprises: a lower plate; and an upper plate seated on the lower plate and capable of moving relative to the lower plate, wherein a surface roughness within a certain range is formed on at least one surface of the upper surface of the lower plate or the lower surface of the upper plate, a sample is placed between the upper plate and the lower plate, and the sample is crushed when relative movement occurs between the upper plate and the lower plate. Thus, even thin samples in the shape of leaf can be easily crushed.

Description

Sample crushing device for analysis {SAMPLE CRUSHING APPARATUS FOR ANALYSIS}

The present invention relates to a sample crusher for analysis, and more particularly, to a sample crusher for analysis that can crush leaves or other solid samples into small particles or concentrate them into a liquid phase for analysis. .

In order to analyze a sample in solid form, it is common to crush it into small particles and convert it into a liquid sample suitable for analysis through a process such as separation/concentration.

A bead grinder (ball mill), a lab blender (bag mixer, stomacher), an ultrasonic homogenizer, a screw sample grinder, and the like are known as conventional crushing devices for sample analysis.

Bead grinder (ball mill) mixes the sample with metal beads, puts them in a container, applies motion to the container (by shaking or rotating it), and crushes the sample using friction between the metal beads and the sample in the container. In this case, an additional process of separating the sample and beads after crushing is required.

Lab blender (Bag mixer, stomacher) puts the sample in a bag (bag) and mechanically crushes it using the reciprocating motion of the instrument. It is suitable for relatively large and hard samples, but has the disadvantage that the result is uneven after crushing.

Ultrasonic homogenizer breaks samples using ultrasonic vibration, and requires a separate power supply.

Screw sample grinder performs physical/mechanical crushing using screw threads or blades. There is a sample that is lost because crushing residues may remain on the screw thread, rotor, and blade, and if it is not disposable, cleaning is required and cleaning is not easy.

Therefore, the present invention is to propose a new type of sample crushing device capable of effectively crushing even thin samples such as leaves.

Republic of Korea Patent Publication 10-2012-0135474

Therefore, an object of the present invention is to solve such conventional problems, by placing a sample between the upper and lower plates, and crushing the sample by the surface roughness formed on the plates when the upper and lower plates relatively slide, It is an object of the present invention to provide a sample crushing device for analysis that can easily crush a thin sample in the form of a leaf and can be used as an inexpensive and disposable / on-site device.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

The above object, according to the present invention, the lower plate; and an upper plate seated on the lower plate and capable of relative movement with respect to the lower plate, wherein a surface roughness within a predetermined range is formed on at least one of an upper surface of the lower plate and a lower surface of the upper plate, and a gap between the upper plate and the lower plate is formed. It can be achieved by a sample crushing device for analysis in which a sample is placed on and the sample is crushed when the relative movement between the upper plate and the lower plate is performed.

Here, the sample may be leaves.

Here, a microchannel through which crushed particles move may be formed on an upper surface of the lower plate.

Here, the micro-passages are first micro-passages formed in a pattern in a direction inclined with respect to the sliding movement direction of the upper plate or the lower plate, and crushing moving from each of the first micro-passages by connecting one end of the first micro-passages. A second microchannel for collecting and moving particles may be included.

Here, an outlet through which the crushed particles are discharged to the outside may be formed at one end of the second microchannel.

Here, at least one surface of the upper surface of the lower plate or the lower surface of the upper plate may be partitioned into regions having surface roughness in different value ranges along the sliding movement direction.

Here, on the upper surface of the lower plate, microchannels through which particles crushed in each partitioned area move may be formed.

According to the sample crusher for analysis of the present invention as described above, there is an advantage in that a sample in the form of a thin leaf can be effectively crushed.

In addition, there is also an advantage that it can be used as a disposable / on-site crushing device at low cost.

1 is a perspective view of a sample crushing device for analysis according to an embodiment of the present invention.
Figure 2 is a perspective view of Figure 1;
3 is a view explaining the surface roughness formed on the upper surface of the lower plate.
FIG. 4 is a diagram illustrating the operation of FIG. 1 .
5 shows a modified example of a form in which a microchannel is formed.
Figure 6 shows another variant that can produce fractured particles of various sizes.
FIG. 7 shows a modified example of the shape in which the microchannel is formed in FIG. 6 .

The specific details of the embodiments are included in the detailed description and drawings.

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention belongs. It is provided to completely inform the person who has the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numbers designate like elements throughout the specification.

Hereinafter, the present invention will be described with reference to drawings for explaining a sample crushing apparatus for analysis according to embodiments of the present invention.

1 is a perspective view of a sample crushing device for analysis according to an embodiment of the present invention, FIG. 2 is a perspective view of FIG. 1, FIG. 3 is a view explaining the surface roughness formed on the upper surface of the lower plate, and FIG. It is a diagram showing the operation of 1.

A sample crusher for analysis according to an embodiment of the present invention may be composed of a lower plate 110 and an upper plate 120 seated on the lower plate 110 and relatively moving with the lower plate 110.

Both the lower plate 110 and the upper plate 120 may be formed in the form of a long rectangular plate having a predetermined thickness, and both sides of the lower plate 110 protrude upward in a long straight line to guide the sliding movement of the upper plate 120. A portion 115 may be formed. Both side surfaces of the top plate 120 may come into contact with the guide portion 115 to guide the top plate 120 to slide in both directions.

In this embodiment, the upper plate 120 is configured to slide with respect to the lower plate 110, but the lower plate 110 may be configured to slide with respect to the upper plate 120.

In addition, in this embodiment, the top plate 120 is configured to slide manually, but may be configured to slide by receiving power electrically by a separate driving unit. Although not shown, a handle or the like may be formed on the top plate so that the top plate can be slid and moved by holding by hand.

A surface roughness within a predetermined range may be formed on at least one surface of the upper surface of the lower plate 110 or the lower surface of the upper plate 120 . In this embodiment, the upper surface of the lower plate 110 has a surface roughness within a certain range.

The sample 200 is disposed between the upper plate 120 and the lower plate 110. When the upper plate 120 slides, the sample 200 on the lower plate 110 having a certain surface roughness is the surface of the upper plate 120. The sample 200 may be crushed by compression due to the sliding movement.

The upper plate 120 and the lower plate 110 may be formed of a material having higher strength than the sample 200 and a metal material or a rock material having processability capable of easily generating a constant surface roughness.

At this time, as in (a) of FIG. 3, when the surface roughness is large, the sample 200 having relatively high strength can be easily crushed, and as in (b) of FIG. 3, the surface roughness is small. In the case of relatively less roughness, the sample 200 having relatively low strength may be crushed.

In the present invention, since the sample 200 is disposed between the plate-shaped upper and lower plates 110 and 120, it is easy to crush the sample 200 in the form of a plate, sheet, or film. In particular, it can be easily used for crushing vegetable samples such as leaves 200. Existing methods such as a bead grinder (ball mill) and a lab blender (bag mixer, stomacher) are used to crush various types of solid samples 200, but it is easy to crush a plate-shaped sample 200 such as leaves uniformly. don't However, the sample crushing device according to the present invention can easily crush the plate-shaped sample 200 like leaves.

In addition, as shown in FIG. 3 , the plate-shaped sample 200 can be easily crushed by adjusting the surface roughness according to the type of the sample 200 . Further, according to the strength of the sample 200, the upper plate 120 may be shredded into smaller particles by sliding the upper plate 120 back and forth more times.

Hereinafter, modifications of the above-described embodiment will be described with reference to FIGS. 1 to 4 with reference to FIGS. 5 to 7 .

5 shows a modification of the form in which the microchannel is formed, FIG. 6 shows another modification that can generate crushed particles of various sizes, and FIG. 7 shows a modification of the form in which the microchannel is formed in FIG. show

As shown in FIG. 5 , a microchannel 113 through which crushed particles move may be formed on an upper surface of the lower plate 110 . The micro-passage 113 connects the first micro-passage 111 formed in a pattern in a direction inclined with respect to the sliding movement direction of the upper plate 120 or the lower plate 110 and one end of the first micro-passage 111. It may be formed as a second microchannel 112 extending long along the sliding movement direction. Particles crushed at each position of the first micro-channel 111 are pushed to one side of the first micro-channel 111 arranged in an inclined direction when the upper plate 120 slides, and each of the first micro-channels 111 moves. Crushed particles pushed to one end of the passage 111 may be collected in the second micro passage 112 and moved in a sliding movement direction. An outlet 114 may be formed at one end of the second microchannel 112 to discharge crushed particles that have passed through the lower plate 110 to the outside. Accordingly, by disposing a beaker or the like under the outlet 114, the crushed or crushed sample 200, which has been changed into a liquid state, can be easily collected and subsequently analyzed.

In addition, as shown in FIG. 6, regions having constant surface roughness may be partitioned along the sliding direction, and each region may have different surface roughness. For example, as shown, the upper surface of the lower plate 110 is divided into three areas, each having a high roughness area (upper area in the drawing), an area having medium roughness (middle area in the drawing), and a low roughness area. It is possible to crush the sample 200 in different sizes in each region by forming a region (lower region in the drawing) having

In addition, as shown in FIG. 7 , microchannels 113 through which particles crushed in each region of FIG. 6 move may be formed on the upper surface of the lower plate 110 . The microchannels formed in each region may be formed in the form of the first microchannel 111 and the second microchannel 112 described above, and a lower plate 110 is provided at one end of each second microchannel 111. An outlet 114 may be formed therethrough. Therefore, particles crushed to different sizes in each region can be collected and collected at once through each outlet 114 .

The scope of the present invention is not limited to the above-described embodiments, but may be implemented in various forms of embodiments within the scope of the appended claims. Anyone with ordinary knowledge in the art to which the invention pertains without departing from the subject matter of the invention claimed in the claims is considered to be within the scope of the claims of the present invention to various extents that can be modified.

110: lower plate
111: first microchannel
112: second microchannel
113: micro flow path
114: outlet
120: top plate
200: sample, leaves

Claims (7)

lower plate; and
An upper plate seated on the lower plate and capable of relative movement with the lower plate,
A surface roughness within a certain range is formed on at least one surface of the upper surface of the lower plate or the lower surface of the upper plate,
A sample crushing device for analysis in which a sample is placed between the upper plate and the lower plate, and the sample is crushed when the relative movement between the upper plate and the lower plate is performed. According to claim 1,
The sample is a sample crushing device for analysis of leaves. According to claim 1,
A sample crushing device for analysis in which a microchannel through which crushed particles move is formed on the upper surface of the lower plate. According to claim 3,
The micro-channels connect the first micro-channels formed in a pattern in a direction inclined with respect to the sliding direction of the upper or lower plate and one end of the first micro-channels so that the crushed particles moving from each of the first micro-channels A sample crushing device for analysis comprising a second microchannel for collecting and moving a sample. According to claim 4,
A sample crushing device for analysis, wherein an outlet is formed at one end of the second microchannel to discharge crushed particles to the outside through a lower plate. According to claim 1,
At least one surface of the upper surface of the lower plate or the lower surface of the upper plate is partitioned into regions having surface roughness of different value ranges along the sliding movement direction. According to claim 6,
A sample crushing device for analysis in which microchannels through which particles crushed in each partitioned area move are formed on the upper surface of the lower plate.

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