Light source adjusting device of thin-layer chromatography scanner

Abstract

The utility model discloses a light source adjusting device of a thin-layer chromatography scanner, and relates to the technical field of thin-layer chromatography scanners. The scanner comprises a scanner main body, a scanning table, a circuit board and a halogen tungsten lamp, the circuit board is installed inside the scanner main body, the halogen tungsten lamp is installed on a lamp holder of the circuit board, and a light source mechanism is arranged inside the scanner main body. The first gear drives the worm to rotate, the worm drives the worm gear to rotate, the transmission speed can be further reduced, the worm gear drives the transmission shaft to rotate, the transmission shaft drives the grating to rotate slowly and uniformly through the first rotating shaft, the situation that the grating is difficult to rotate uniformly through manual operation can be avoided, and the purpose of uniform-speed rotation is achieved. The threaded rod rotates to drive the moving block to move, the moving block drives the connecting block to move, and the connecting block drives the focusing lens to move, so that the position of the focusing lens can be adjusted to effectively focus light rays, and the purpose of improving the focusing effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of thin-layer chromatography scanner technology, specifically a light source adjustment device for a thin-layer chromatography scanner. Background Technology

[0002] Thin-layer chromatography (TLC) is a chromatographic technique in which a stationary phase is coated onto a glass or aluminum plate to form a uniform thin layer. The components in the sample move directionally within the thin layer along with the mobile phase. Different components are separated by different forces acting on the stationary / mobile phase. During operation, a TLC scanner allows different wavelengths of light to pass through sequentially by rotating the grating, thus achieving wavelength selection. During scanning, the angle of the grating is changed systematically according to a certain wavelength range and step size, allowing different wavelengths of light to continuously illuminate the sample, thereby obtaining the absorption or fluorescence spectra of the sample at different wavelengths.

[0003] Most existing thin-layer chromatography scanners require manual operation to adjust the rotation of the grating, and manual adjustment is difficult to achieve a slow and uniform speed, which affects the spectral scanning effect. Utility Model Content

[0004] To address the problem that manual rotation adjustment is difficult and slow, thus affecting the spectral scanning effect, the purpose of this invention is to provide a light source adjustment device for a thin-layer chromatography scanner.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a light source adjustment device for a thin-layer chromatography scanner, comprising a scanner body, a scanning stage, a circuit board, and a halogen tungsten lamp. The scanning stage is disposed in the scanning chamber of the scanner body, the circuit board is installed inside the scanner body, and the halogen tungsten lamp is installed on the lamp holder of the circuit board. A light source mechanism is disposed inside the scanner body. The light source mechanism includes a housing, which is installed inside the scanner body. Symmetrically distributed reflectors are installed inside the housing. A grating is disposed inside the housing, located between two reflectors. A focusing lens is slidably disposed inside the housing, located between the grating and the reflectors. A symmetrically distributed first rotating shaft is fixed on the outer side of the grating, and one end of the first rotating shaft is rotatably mounted on the inner wall of the housing. The box body has an internal cavity, through which a drive shaft rotates. The bottom end of the drive shaft is fixedly connected to the first rotating shaft. A worm gear is fixedly sleeved on the outside of the drive shaft, and a worm meshes with the outside of the worm gear. The worm gear drives the worm gear to rotate, which further reduces the transmission speed. The worm gear drives the drive shaft to rotate, and the drive shaft drives the grating to rotate slowly and uniformly through the first rotating shaft. This avoids the difficulty of uniform rotation during manual operation. The bottom of the box body has symmetrically distributed light inlets and outlets. The light inlets are aligned with the halogen tungsten lamp, and the light outlets are used in conjunction with the scanning stage. This facilitates the entry and exit of light into and out of the box body. A right-angle cover is installed on the box body to seal it. A protective door is hinged to the scanner body, and a transparent observation window is provided on the protective door.

[0006] Preferably, a symmetrically distributed first fixing plate is fixedly provided at the bottom of the cavity. A threaded rod is rotatably installed on the opposite side of the first fixing plate. A movable block is threadedly fitted on the outer side of the threaded rod. A connecting block is fixedly provided at the bottom of the movable block. The bottom end of the connecting block is connected to the top end of the focusing lens. A first motor is fixedly provided on the outer side of the first fixing plate. The end of the output shaft of the first motor is fixedly connected to one end of the threaded rod. The first motor drives the threaded rod to rotate, which in turn drives the movable block to move within the cavity. The movable block drives the connecting block to move, which in turn drives the focusing lens to move. This allows the position of the focusing lens to be adjusted for effective focusing of light. A guide groove is provided at the bottom of the cavity, and the connecting block is slidably engaged within the guide groove. The guide groove helps to keep the connecting block moving stably.

[0007] Preferably, a second fixing plate is fixedly provided at the bottom of the cavity, one end of the worm gear is rotatably mounted on one side of the second fixing plate, a first gear is fixedly provided at one end of the worm gear, a second gear meshes with the outer side of the first gear, a second rotating shaft is fixedly passed through the middle of the second gear, one end of the second rotating shaft is rotatably mounted on the second fixing plate, the second rotating shaft drives the second gear to rotate, and the second gear drives the first gear, which can reduce the speed output by the second motor. A second motor is fixedly provided on the outer side of the second fixing plate, and the end of the output shaft of the second motor is fixedly connected to one end of the second rotating shaft, so that the second rotating shaft can be rotated by the second motor to provide power.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0009] 1. The first gear drives the worm to rotate, and the worm drives the worm wheel to rotate, which can further reduce the transmission speed. The worm wheel drives the transmission shaft to rotate, and the transmission shaft drives the grating to rotate slowly and uniformly through the first rotating shaft. This can avoid the situation where it is difficult to rotate at a uniform speed when operated manually, thereby achieving the purpose of uniform rotation.

[0010] 2. The moving block moves by rotating the threaded rod, which in turn moves the connecting block, which in turn moves the focusing lens. This allows the position of the focusing lens to be adjusted so that the light can be effectively focused, thereby improving the focusing effect. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a schematic cross-sectional view of the structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the unfolded structure of the light source mechanism of this utility model.

[0015] Figure 4 for Figure 3 Enlarged view of the structure of A in the middle.

[0016] Figure 5 for Figure 3 Enlarged view of the structure of B in the middle.

[0017] Figure 6This is a front view of the cross-sectional structure of the light source mechanism of this utility model.

[0018] In the diagram: 1. Scanner body; 2. Light source mechanism; 21. Housing; 22. Grating; 23. Reflector; 24. Focusing lens; 25. First rotating shaft; 26. Drive shaft; 27. Worm gear; 28. Worm; 29. ​​Cavity; 210. First gear; 211. Second gear; 212. Second rotating shaft; 213. Second motor; 214. Second fixing plate; 215. First fixing plate; 216. Threaded rod; 217. Moving block; 218. Connecting block; 219. Guide groove; 220. First motor; 221. Light inlet; 222. Light outlet; 223. Right-angle cover plate; 3. Circuit board; 4. Halogen tungsten lamp; 5. Protective door; 6. Scanning table. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example: Figure 1-6As shown, this utility model provides a light source adjustment device for a thin-layer chromatography scanner, including a scanner body 1, a scanning stage 6, a circuit board 3, and a halogen tungsten lamp 4. The scanning stage 6 is disposed in the scanning chamber of the scanner body 1. The circuit board 3 is installed inside the scanner body 1. The halogen tungsten lamp 4 is installed on the lamp holder of the circuit board 3. A light source mechanism 2 is disposed inside the scanner body 1. The light source mechanism 2 includes a housing 21, which is installed inside the scanner body 1. Symmetrically distributed reflectors 23 are installed inside the housing 21. A grating 22 is disposed inside the housing 21, located between two reflectors 23. A focusing lens 24 is slidably disposed inside the housing 21, located between the grating 22 and the reflectors 23. A symmetrically distributed first rotating shaft 25 is fixed on the outside of the grating 22. One end of the first rotating shaft 25 is rotatably mounted on the inner wall of the housing 21. An opening is provided inside the housing 21. The bottom of cavity 29 is rotatably connected to a drive shaft 26. The bottom end of the drive shaft 26 is fixedly connected to the first rotating shaft 25. A worm gear 27 is fixedly sleeved on the outside of the drive shaft 26. A worm 28 meshes with the outside of the worm gear 27. The worm gear 28 drives the worm gear 27 to rotate, which can further reduce the transmission speed. The worm gear 27 drives the drive shaft 26 to rotate. The drive shaft 26 drives the grating 22 to rotate slowly and uniformly through the first rotating shaft 25. This can avoid the situation where it is difficult to rotate uniformly when operated manually. The bottom of the box 21 has symmetrically distributed light inlets 221 and light outlets 222. The light inlets 221 are aligned with the halogen tungsten lamp 4. The light outlets 222 are used in conjunction with the scanning stage 6. This can facilitate the entry and exit of light into and out of the box 21. A right-angle cover plate 223 is installed on the box 21 to close the box 21. A protective door 5 is hinged on the scanner body 1. A transparent observation window is provided on the protective door 5.

[0021] A first fixed plate 215 symmetrically distributed is fixedly provided at the bottom of the cavity 29. A threaded rod 216 is rotatably installed on the opposite side of the first fixed plate 215. A moving block 217 is threadedly sleeved on the outer side of the threaded rod 216. A connecting block 218 is fixedly provided at the bottom of the moving block 217. The bottom end of the connecting block 218 is connected to the top end of the focusing lens 24. A first motor 220 is fixedly provided on the outer side of the first fixed plate 215. The end of the output shaft of the first motor 220 is fixedly connected to one end of the threaded rod 216. The first motor 220 drives the threaded rod 216 to rotate. The threaded rod 216 drives the moving block 217 to move within the cavity 29. The moving block 217 drives the connecting block 218 to move. The connecting block 218 drives the focusing lens 24 to move. This allows the position of the focusing lens 24 to be adjusted for effective focusing of light. A guide groove 219 is provided at the bottom of the cavity 29. The connecting block 218 is slidably locked in the guide groove 219. The guide groove 219 keeps the moving of the connecting block 218 stable.

[0022] A second fixed plate 214 is fixedly provided at the bottom of the cavity 29. One end of the worm gear 28 is rotatably mounted on one side of the second fixed plate 214. A first gear 210 is fixedly provided at one end of the worm gear 28. A second gear 211 meshes with the outer side of the first gear 210. A second rotating shaft 212 is fixedly passed through the middle of the second gear 211. One end of the second rotating shaft 212 is rotatably mounted on the second fixed plate 214. The second rotating shaft 212 drives the second gear 211 to rotate. The second gear 211 drives the first gear 210. This can reduce the speed output by the second motor 213. The second motor 213 is fixedly provided on the outer side of the second fixed plate 214. The end of the output shaft of the second motor 213 is fixedly connected to one end of the second rotating shaft 212. The second motor 213 can provide power to rotate the second rotating shaft 212.

[0023] Working principle: First, open the protective door 5 and place the prepared thin plate on the scanning stage 6. Then, turn on the halogen lamp 4. The halogen lamp 4 emits light, which enters the box 21 through the light inlet 221. The light shines on the reflector 23, which refracts the light so that it shines horizontally on the grating 22. The grating 22 decomposes the composite light into monochromatic light. The monochromatic light passes through the slit of the grating 22 and diverges. The light is focused by the focusing lens 24 and then shines on the reflector 23. The reflector 23 refracts the light and emits it from the light outlet 222. The light shines on the thin plate on the scanning stage 6. The material on the thin plate absorbs the visible light and observes it through the observation window of the protective door 5.

[0024] When the angle of the grating 22 needs to be adjusted, the second motor 213 is started. The end of the output shaft of the second motor 213 drives the second rotating shaft 212 to rotate. The second rotating shaft 212 drives the second gear 211 to rotate. The second gear 211 drives the first gear 210, which reduces the speed output by the second motor 213. The first gear 210 drives the worm 28 to rotate. The worm 28 drives the worm wheel 27 to rotate, which further reduces the transmission speed. The worm wheel 27 drives the transmission shaft 26 to rotate. The transmission shaft 26 drives the grating 22 to rotate slowly and uniformly through the first rotating shaft 25. The angle between the grating 22's scribe line direction and the incident light... The change causes light of different wavelengths to disperse in the horizontal direction according to a certain rule. The photodetector of the scanner body 1 receives and analyzes light of different wavelengths at different positions in the horizontal direction. This allows the grating 22 to rotate at a constant speed. At the same time, the first motor 220 is started. The first motor 220 drives the threaded rod 216 to rotate. The threaded rod 216 drives the moving block 217 to move in the cavity 29. The moving block 217 drives the connecting block 218 to move in the guide groove 219. The connecting block 218 drives the focusing lens 24 to move. This allows the position of the focusing lens 24 to be adjusted so as to effectively focus the light.

[0025] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A thin layer chromatography scanner light source adjustment device, comprising a scanner main body (1), a scanning table (6), a circuit board (3) and a halogen tungsten lamp (4), characterized in that: The scanning table (6) is arranged in the scanning chamber of the scanner main body (1), the circuit board (3) is arranged in the interior of the scanner main body (1), the halogen tungsten lamp (4) is arranged on the lamp holder of the circuit board (3), and the interior of the scanner main body (1) is provided with the light source mechanism (2). The light source mechanism (2) comprises a box body (21), the box body (21) is arranged in the scanner main body (1), the box body (21) is internally provided with symmetrically distributed reflecting mirrors (23), the box body (21) is internally provided with a grating (22), the grating (22) is located between the two reflecting mirrors (23), the box body (21) is internally provided with a focusing lens (24), the focusing lens (24) is located between the grating (22) and the reflecting mirror (23), the outer side of the grating (22) is fixedly provided with symmetrically distributed first rotating shafts (25), one end of the first rotating shaft (25) is rotatably arranged on the inner wall of the box body (21), the box body (21) is internally provided with a cavity (29), the bottom of the cavity (29) is rotatably penetrated by a transmission shaft (26), the bottom end of the transmission shaft (26) is fixedly connected with the first rotating shaft (25), the outer side of the transmission shaft (26) is fixedly sleeved with a worm wheel (27), and the outer side of the worm wheel (27) is meshed with a worm (28).

2. A thin layer chromatography scanner light source adjustment device as claimed in claim 1, characterized in that The bottom of the cavity (29) is fixedly provided with symmetrically distributed first fixed plates (215), the opposite side of the first fixed plate (215) is rotatably arranged with a threaded rod (216), the outer side of the threaded rod (216) is threadedly sleeved with a moving block (217), the bottom of the moving block (217) is fixedly provided with a connecting block (218), the bottom end of the connecting block (218) is fixedly connected with the top end of the focusing lens (24), the outer side of the first fixed plate (215) is fixedly provided with a first motor (220), and the end of the output shaft of the first motor (220) is fixedly connected with one end of the threaded rod (216).

3. A thin layer chromatography scanner light source adjustment device as defined in claim 1, wherein, The bottom of the cavity (29) is fixedly provided with a second fixed plate (214), one end of the worm (28) is rotatably arranged on one side of the second fixed plate (214), one end of the worm (28) is fixedly provided with a first gear (210), the outer side of the first gear (210) is meshed with a second gear (211), the middle part of the second gear (211) is fixedly penetrated by a second rotating shaft (212), and one end of the second rotating shaft (212) is rotatably arranged on the second fixed plate (214).

4. A thin layer chromatography scanner light source adjustment device as defined in claim 1, wherein, The bottom of the box body (21) is provided with symmetrically distributed light inlet openings (221) and light outlet openings (222), the light inlet openings (221) are aligned with the halogen tungsten lamp (4), and the light outlet openings (222) are used in cooperation with the scanning table (6).

5. A thin layer chromatography scanner light source adjustment device as claimed in claim 3, wherein, The outer side of the second fixed plate (214) is fixedly provided with a second motor (213), and the end of the output shaft of the second motor (213) is fixedly connected with one end of the second rotating shaft (212).

6. A thin layer chromatography scanner light source adjustment device as defined in claim 2, wherein, The bottom of the cavity (29) is provided with a guide groove (219), and the connecting block (218) is slidingly clamped in the guide groove (219).

7. A thin layer chromatography scanner light source adjustment device as defined in claim 1, wherein, A right-angle cover plate (223) is mounted on the box body (21).

8. A thin layer chromatography scanner light source adjustment device as defined in claim 1, wherein, The scanner main body (1) is hingedly provided with a protection door (5).

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