Marking point pressing device for thin-layer silica gel plate

Abstract

The utility model discloses a marking point pressing device for a thin-layer silica gel plate, which comprises an upper clamping part and a lower clamping part, one end of the upper clamping part is rotatably connected with one end of the lower clamping part, the top of the lower clamping part is provided with a fixed clamping groove, the bottom of the upper clamping part is provided with a line-shaped bulge, and the line-shaped bulge is in the shape of a horizontal straight line. The position of the line-shaped protrusion corresponds to the position of the fixing clamping groove, and the line-shaped protrusion is located over the fixing clamping groove. According to the utility model, the lower clamping part is provided with the fixed clamping groove for clamping and fixing the thin-layer silica gel plate, calibration is not needed, the upper clamping part is provided with the line-shaped bulge and the plurality of uniformly-distributed hemispherical convex points, and the upper clamping part is pressed downwards, so that scribing and point pressing are carried out on the thin-layer silica gel plate, and sample application operation is facilitated. The sample application device is simple and convenient in structural design, good in stability, convenient to operate, capable of improving sample application efficiency and beneficial to follow-up thin-layer chromatography plate running.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical analysis, in particular to a scribing and spotting device for a thin-layer silica gel plate. Background Art

[0002] Requirements for sample spotting during the thin-layer chromatography operation process: The position of the sample spot should be 1 - 1.5 cm away from the bottom edge; the diameter of the sample spot is less than 2 - 3 mm; when there are multiple sample spots, the interval is 1 cm and they are on the same straight line. The utility model patent with the application number 202122496340.6 and the name of a projection device for thin-layer chromatography discloses a projection device for thin-layer chromatography, which includes a support frame and a projection mechanism. The projection mechanism includes a lamp tube part and a lens barrel part. The lens barrel part is a columnar body with openings at both ends. A condenser lens assembly is installed inside the lens barrel part. A projection pattern is provided on the condenser lens assembly, or a transparent projection negative is provided between the condenser lens assembly and the light source assembly, and a projection pattern is provided on the projection negative. The spotting auxiliary lines can be projected by using the projection pattern. However, this technical solution has a complex structure, a high cost, and requires calibration operation for the thin-layer silica gel plate during use, and is prone to failure. Therefore, a scribing and spotting device for a thin-layer silica gel plate with a simple structure and easy operation is needed. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a scribing and spotting device for a thin-layer silica gel plate.

[0004] According to one aspect of the utility model, a scribing and spotting device for a thin-layer silica gel plate is provided, which includes an upper clamping part and a lower clamping part. One end of the upper clamping part is rotatably connected to one end of the lower clamping part. A fixed clamping groove is provided at the top of the lower clamping part, and a line-shaped protrusion is provided at the bottom of the upper clamping part. The line-shaped protrusion is in the shape of a horizontal straight line, and the position of the line-shaped protrusion corresponds to the position of the fixed clamping groove, and the line-shaped protrusion is directly above the fixed clamping groove.

[0005] In some embodiments, the depth of the fixed clamping groove matches the thickness of the thin-layer silica gel plate.

[0006] In some embodiments, the width of the fixed clamping groove matches the width or length of the thin-layer silica gel plate.

[0007] In some embodiments, the length of the line-shaped protrusion is the same as the width of the fixed clamping groove.

[0008] In some embodiments, a plurality of hemispherical convex points are provided on the line-shaped protrusion.

[0009] In some embodiments, the plurality of hemispherical convex points are evenly distributed on the line-shaped protrusion, and the distance between adjacent two hemispherical convex points is 1 cm.

[0010] In some embodiments, the distance between the hemispherical bump at the head end and the top end of the linear bump is 1 cm.

[0011] In some embodiments, the distance between the hemispherical bump at the tail end and the end of the linear bump is 1 cm.

[0012] In some embodiments, the diameter of the hemispherical bump is 2 - 3 mm.

[0013] The beneficial effects of the present utility model: The present utility model is provided with a fixed card slot in the lower clamping part for clamping and fixing the thin-layer silica gel plate without the need for calibration. The upper clamping part is provided with a linear bump and a plurality of evenly distributed hemispherical bumps. By pressing down the upper clamping part, scribing and pressing points are performed on the thin-layer silica gel plate, facilitating the spotting operation. The structure design of the present utility model is simple, has good stability, is easy to operate, improves the spotting efficiency, and is beneficial for subsequent thin-layer chromatography plate running. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural view of a scribing and pressing point device for a thin-layer silica gel plate of the present utility model.

[0015] Figure 2 It is a top view of the upper clamping part of a scribing and pressing point device for a thin-layer silica gel plate of the present utility model.

[0016] Figure 3 It is a top view of the lower clamping part of a scribing and pressing point device for a thin-layer silica gel plate of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following further elaborates on the present utility model in conjunction with the embodiments.

[0018] Reference Figures 1 to 3 , the present utility model provides a scribing and pressing point device for a thin-layer silica gel plate, which includes an upper clamping part 1 and a lower clamping part 2. One end of the upper clamping part 1 is rotatably connected to one end of the lower clamping part 2. The top of the lower clamping part 2 is provided with a fixed card slot 21, and the bottom of the upper clamping part 1 is provided with a linear bump 11. The linear bump 11 is in the shape of a horizontal straight line. The position of the linear bump 11 corresponds to the position of the fixed card slot 21 and is directly above the fixed card slot 21.

[0019] The depth of the fixed card slot 21 matches the thickness of the thin-layer silica gel plate, and the width matches the width or length of the thin-layer silica gel plate. The length of the linear bump 11 is the same as the width of the fixed card slot 21.

[0020] The linear protrusion 11 is provided with a plurality of hemispherical bumps 12 evenly distributed thereon. The diameter of the hemispherical bumps is 2-3 mm. The distance between two adjacent hemispherical bumps 12 is 1 cm. The distance between the hemispherical bump 12 at the first end and the top end of the linear protrusion 11 is 1 cm. The distance between the hemispherical bump 12 at the tail end and the end of the linear protrusion 11 is 1 cm.

[0021] When the utility model is in use, the upper clamping part 1 is opened, and the thin-layer silica gel plate is clamped in the fixed card slot 21 of the lower clamping part, so that the top end of the thin-layer silica gel plate extends out of the fixed card slot 21 by 1 cm or 2 cm. Then the upper clamping part 1 is closed. The linear protrusion 11 and the plurality of hemispherical bumps 12 are in contact with the silica gel surface of the thin-layer silica gel plate, and are pressed on its surface to form scribed lines and corresponding multiple dot-like depressions. The diameter of these dot-like depressions is 2-3 mm, the distance from the edge of the thin-layer silica gel plate is 1 cm, and the distance between two adjacent dot-like depressions is 1 cm, which fully meets the requirements of thin-layer chromatography sample application, and the scribing and dot pressing operations on the thin-layer silica gel plate are completed. Then the upper clamping part 1 is opened, and the thin-layer silica gel plate is taken out from the fixed card slot 21. Just use a sampler to directly apply samples in the multiple dot-like depressions.

[0022] The above are only some embodiments of the utility model. For those of ordinary skill in the art, without departing from the inventive concept of the utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the utility model.

Claims

1. A scribing and dotting device for a thin-layer silica gel plate, characterized in that, It includes an upper clamping part and a lower clamping part. One end of the upper clamping part is rotatably connected to one end of the lower clamping part. A fixed clamping groove is provided at the top of the lower clamping part, and a strip-like protrusion is provided at the bottom of the upper clamping part. The strip-like protrusion is in the shape of a horizontal straight line, and the position of the strip-like protrusion corresponds to the position of the fixed clamping groove, and the strip-like protrusion is directly above the fixed clamping groove.

2. The scribing and dotting device for a thin-layer silica gel plate according to claim 1, wherein The depth of the fixed clamping groove matches the thickness of the thin-layer silica gel plate.

3. A scribing and dotting device for a thin-layer silica gel plate according to claim 1, characterized in that, The width of the fixed clamping groove matches the width or length of the thin-layer silica gel plate.

4. A scribing and dotting device for a thin-layer silica gel plate according to claim 1, characterized in that, The length of the strip-like protrusion is the same as the width of the fixed clamping groove.

5. A scribing and dotting device for a thin-layer silica gel plate according to claim 4, characterized in that, A plurality of hemispherical bumps are provided on the strip-like protrusion.

6. The scribing and dotting device for a thin-layer silica gel plate according to claim 5, wherein, The plurality of hemispherical bumps are evenly distributed on the strip-like protrusion, and the distance between two adjacent hemispherical bumps is 1 cm.

7. A scribing and spotting device for a thin-layer silica gel plate according to claim 5, characterized in that, The distance between the hemispherical bump at the head end and the top end of the strip-like protrusion is 1 cm.

8. A scribing and spotting device for a thin-layer silica gel plate according to claim 6, characterized in that, The distance between the hemispherical bump at the tail end and the end of the strip-like protrusion is 1 cm.

9. A scribing and dotting device for a thin-layer silica gel plate according to claim 5, characterized in that, The diameter of the hemispherical bump is 2-3 mm.

Images