Shading device suitable for Raman detection

Abstract

The utility model provides a shading device suitable for Raman detection. The shading device comprises a folding assembly, a shading film and a plurality of locking assemblies, the folding assembly can be used for folding, storing or opening the shading film; the shading film sleeves the outer surface of the folding assembly and is used for shading an object under the laser microscope; the locking assembly is used for fixing the folding assembly in the unfolded state or the folded state. According to the utility model, the design is reasonable, the shading operation of an experimental article is adjusted through the foldable shading film, the interference of a white-light illuminating lamp is reduced, and the situation that the illuminating lamp in an instrument room needs to be turned off every time Raman detection is carried out is avoided. Meanwhile, the shading film can be detached, replaced and cleaned, and the situation that dust falls seriously after long-time use, and Raman detection data of an object sample are interfered is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of analytical instruments, in particular to a light-shielding device applicable to Raman detection. Background Art

[0002] A laser microconfocal Raman spectrometer consists of six parts: a laser light source, a sample device, a filter, a monochromator, a microscope system, and a detector. Its operation process is to use a laser light source to generate laser with a specific wavelength to excite a sample, so as to generate Raman scattering. After passing through a series of optical path components, it reaches the detector, and the Raman spectrum is obtained through computer processing.

[0003] In the prior art, during the Raman scattering detection process, cosmic rays and white light illumination lamps have a great influence on the Raman spectrum. During the actual test, the staff needs to turn off the illumination in the instrument room and use a low-power desktop table lamp for illumination. And this operation needs to be repeated in each experiment. The staff walks back and forth, which is rather cumbersome and not convenient for other operation behaviors that require illumination except for the desktop position. Summary of the Utility Model

[0004] In view of the above-mentioned disadvantages of the prior art, the purpose of the utility model is to provide a light-shielding device applicable to Raman detection, including: a folding assembly, a light-shielding film, and several locking assemblies;

[0005] The folding assembly can be used to fold and store or open the light-shielding film; the light-shielding film is sleeved on the outer surface of the folding assembly to shield the object sample under the external laser microscope;

[0006] The locking assembly is used to fix the folding assembly in two states: open or folded.

[0007] Preferably, the folding assembly includes a mounting plate, several telescopic rods, and a bottom frame;

[0008] A mounting hole is provided in the middle of the mounting plate, and the external laser microscope can pass through the mounting hole. The bottom frame is located below the mounting plate. The upper end of the telescopic rod is connected to the lower surface of the mounting plate, and the lower end of the telescopic rod is detachably connected to the bottom frame. When the telescopic rod extends, its length can make the bottom frame contact the lower surface of the external laser microscope. When the telescopic rod contracts, its length can make the bottom frame higher than the objective turret of the external laser microscope.

[0009] Preferably, the mounting plate is of a square structure and extends downward in the middle to form a boss with a flange around the bottom. The bottom area of the boss is smaller than the upper surface area of the mounting plate. The telescopic rods are at least 4, and the telescopic rods are several nested tubes.

[0010] Preferably, a plurality of connecting members matching the positions of the telescopic rods are provided on the inner side wall of the light-shielding film, and a circular hole is provided in the middle of the connecting members.

[0011] Preferably, openings are provided at the corners of the upper and lower ends of the light-shielding film, and an elastic band is provided at the upper end of the light-shielding film to adjust the tightness of the opening at the upper end of the light-shielding film.

[0012] Preferably, a plurality of second connecting members are provided at both ends of the light-shielding film for fixing the light-shielding film to the mounting plate and the bottom frame respectively. A plurality of concave holes matching the second connecting members are provided at both ends of the light-shielding film, and a plurality of lock holes matching the second connecting members are provided at the flange of the mounting plate and the upper surface of the bottom frame.

[0013] Preferably, the locking assembly includes a vertical rod connected to the side wall of the bottom frame, and a clamping block is connected to both ends of the vertical rod. Slots matching the clamping blocks are provided at the top of the mounting plate and the bottom end of the microscope device.

[0014] Preferably, handles are respectively connected to two opposite side walls of the bottom frame.

[0015] As described above, a light-shielding device applicable to Raman detection disclosed by the present utility model has the following beneficial effects: The present utility model is reasonably designed. The light-shielding of experimental articles is realized through a foldable light-shielding film, the interference of white light illumination lamps is reduced, and it is avoided that the illumination lamps in the instrument room must be turned off every time Raman detection is carried out. At the same time, the light-shielding film can also be disassembled, replaced and cleaned to avoid serious dust accumulation after long-term use and interference with experimental data detection.

[0016] Therefore, the present utility model effectively overcomes various disadvantages in the prior art and has high industrial utilization value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It shows a perspective view of the light-shielding device applicable to Raman detection of the present utility model.

[0018] Figure 2 It shows a perspective view of the folding assembly of the light-shielding device applicable to Raman detection of the present utility model.

[0019] Figure 3 It shows a perspective view of the mounting plate of the light-shielding device applicable to Raman detection of the present utility model.

[0020] Figure 4 It shows a three-dimensional cross-sectional view of the light-shielding film of the light-shielding device applicable to Raman detection of the present utility model.

[0021] Figure 5 It shows the light-shielding device applicable to Raman detection of the present utility model Figure 1Enlarged view of part A

[0022] Figure 6 Shown is a perspective view of the locking assembly of the light-shielding device applicable to Raman detection in the present utility model

[0023] Element number description

[0024] 10. Folding assembly; 11. Light-shielding film; 12. Locking assembly

[0025] 101. Mounting plate; 102. Telescopic rod; 103. Bottom frame

[0026] 110. Protrusion; 111. Round hole; 112. Concave hole; 113. Lock hole; 114. Second connecting piece

[0027] 120. Vertical rod; 121. Clamping block

[0028] 1030. Handle Detailed implementation manners

[0029] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification

[0030] Please refer to Figures 1 to 6 Note that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope that the technical content disclosed by the present utility model can cover. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration, and are not used to limit the scope for the implementation of the present utility model. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope for the implementation of the present utility model

[0031] Such as Figures 1 - 6As shown in the figure, the utility model provides a light-shielding device applicable to Raman detection, which includes a folding assembly 10, a light-shielding film 11 and a plurality of locking assemblies 12; the folding assembly 10 can be used to fold and store or open the light-shielding film 11; the light-shielding film 11 is mainly made of materials such as polyethylene, polypropylene, and polyester, and has the function of blocking light. The light-shielding film 11 is sleeved on the outer surface of the folding assembly 10 to block light from an object sample under an external laser microscope; the locking assembly 12 is used to fix the folding assembly 10 in two states of being opened or folded. In the initial stage of preparing materials for the experiment, the folding assembly 10 is in a folded state and fixed in shape by the locking assembly 12, so that the light-shielding film 11 is also in a folded and contracted state. At this time, the object sample is not blocked from light, which is convenient for placing the object sample on the microscope platform; before starting the detection, pull the folding assembly 10 to cancel the locking of the folding assembly 10 by the locking assembly 12. The folding assembly 10 drives the light-shielding film 11 to open and cover the object under the microscope. When the folding assembly 10 touches the bottom of the microscope device, it is fixed again by the locking assembly 12 to reduce the interference of the white light illumination lamp on the Raman spectrum detection.

[0032] In one embodiment, please refer to Figures 1 - 3 , the folding assembly 10 includes a mounting plate 101, a plurality of telescopic rods 102, and a bottom frame 103; a mounting hole is provided in the middle of the mounting plate 101, and an external laser microscope can pass through the mounting hole and be connected to the mounting plate 101. The connection position between the mounting plate 101 and the microscope device should be higher than the height of the objective turret, which is convenient for placing the object sample and manually operating to adjust the objective magnification. The bottom frame 103 is located below the mounting plate 101. The upper end of the telescopic rod 102 is connected to the lower surface of the mounting plate 101, and the lower end of the telescopic rod 102 is detachably connected to the bottom frame 103. When the telescopic rod 102 extends, its length can make the bottom frame 103 contact the lower surface of the external laser microscope. When the telescopic rod 102 contracts, its length can make the bottom frame 103 higher than the objective turret of the external laser microscope. The distance between the mounting plate 101 and the bottom frame 103 is controlled by the telescopic function of the telescopic rod 102. The mounting plate 101 is a square structure and extends downward in the middle to form a boss with a flange around the bottom. The bottom area of the boss is smaller than the upper surface area of the mounting plate 101. There are at least 4 telescopic rods 102, and four of the telescopic rods 102 are respectively distributed at the four corners of the mounting plate 101 and the bottom frame 103, which is convenient for improving the stability of the bottom frame 103 during lifting. At the same time, the spatial position of the light-shielding film 11 is also controlled to be larger than the space formed by the four telescopic rods 102 to avoid accidentally touching the detected item under the microscope. The telescopic rod 102 is a plurality of nested sleeves.

[0033] In one embodiment, please refer to Figure 4The inner wall of the shading film 11 is provided with a plurality of connectors 110 that match the position of the telescopic rod 102. The connectors 110 are connected to the shading film 11 at a vertical angle, and the material used can be a cloth with strong toughness. A circular hole 111 is provided in the middle of the connector 110. The aperture of the circular hole 111 is larger than the diameter of the telescopic rod 102, so that the telescopic rod 102 can pass through the circular hole 111 in the middle of the connector 110 to connect with the shading film 11. Openings are provided at the corners of the upper and lower ends of the shading film 11, so that the upper and lower ends of the shading film 11 can be bent conveniently, so that the side edges of the two ends of the shading film 11 can fit with the flange of the mounting plate 101 and the upper surface of the bottom frame 103, so as to facilitate fixation. An elastic band is provided at the upper end of the shading film 11 to adjust the tightness of the opening at the upper end of the shading film 11, so that the upper end of the shading film 11 clamps the side of the boss of the mounting plate 101 to assist in fixation. A plurality of second connecting members 114 are provided at both ends of the shading film 11, which are used to fix the shading film 11 to the mounting plate 101 and the bottom frame 103, respectively. A plurality of concave holes 112 matching the second connecting members 114 are provided at both ends of the shading film 11, and a plurality of locking holes 113 matching the second connecting members 114 are provided on the upper surfaces of the mounting plate 101 and the bottom frame 103. The second connecting member 114 is preferably a bolt, and the bolt is passed through the concave hole 112 and connected to the locking hole 113 to fix the shading film 11 and the folding assembly 10, thereby realizing the installation of the shading film 11 and facilitating disassembly and cleaning.

[0034] In one embodiment, please refer to Figures 5 - 6 The locking assembly 12 includes a vertical rod 120 connected to the side wall of the bottom frame 103, and a clamping block 121 is connected to both ends of the vertical rod 120. The clamping block 121 is a cylindrical structure and has an elastic fastening ring on the outer surface of the middle part. The top of the mounting plate 101 and the bottom of the microscope device are both provided with a clamping groove matching the clamping block 121. The clamping groove is a cylindrical cavity and has an outer ring groove slightly larger than the aperture of the clamping groove in the middle. When the folding assembly 10 is in the folded state, the clamping block 121 at the upper end of the vertical rod 120 is inserted into the top clamping groove of the mounting plate 101 to fix the mounting plate 101 and the bottom frame 103. When in use, the bottom frame 103 is pulled downward to disengage the block 121 at the upper end of the vertical rod 120 from the slot of the mounting plate 101, thereby canceling the fixation of the bottom frame 103. When the bottom frame 103 is lowered to the bottom of the microscope, the block 121 at the lower end of the vertical rod 120 is aligned with the slot at the bottom of the microscope device and inserted, thereby fixing the bottom frame 103 to the bottom of the microscope, thereby fixing the folding assembly 10 in the open state. The locking assembly 12 has a two-way locking function, and the fixing function is realized by plugging and unplugging operations, which is convenient for operation.

[0035] In one embodiment, please refer to Figures 1 - 2 The side walls at both ends of the bottom frame 103 are connected with handles 1030 for driving the bottom frame 103 to move up and down.

[0036] The specific use process of the present utility model is as follows: After the experimental articles are fixed on the microscope, by pulling down the folding assembly 10, the locking assembly 12 releases the locking of the folding assembly 10, causing the folding assembly 10 to open, driving the light-shielding film 11 to cover and shield the experimental articles. When the folding assembly 10 touches the bottom end of the microscope, the locking assembly 12 is used again to lock the folding assembly 10, thereby completing the light-shielding operation. Reversing the above steps can remove the light-shielding effect.

[0037] In summary, the light-shielding device applicable to Raman detection of the present utility model is reasonably designed. The light-shielding operation of the experimental articles is adjusted through the foldable light-shielding film 11, reducing the interference of the white light illumination lamp and avoiding the necessity of turning off the illumination lamp in the instrument room every time Raman detection is performed. At the same time, the light-shielding film 11 can be disassembled, replaced and cleaned to avoid serious dust accumulation after long-term use and interference with the Raman detection data of the object sample.

[0038] Therefore, the present utility model effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0039] The above embodiments are only illustrative of the principles and effects of the present utility model, and are not used to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A light-shielding device applicable to Raman detection, characterized in that Comprising: a folding assembly (10), a light-shielding film (11), and a plurality of locking assemblies (12); The folding assembly (10) can be used to fold and store or open the light-shielding film (11); The light-shielding film (11) is sleeved on the outer surface of the folding assembly (10) for shielding an object sample under an external laser microscope; The locking assembly (12) is used to fix the folding assembly (10) in two states of being opened or folded.

2. The light-shielding device applicable to Raman detection according to claim 1, wherein: The folding assembly (10) includes a mounting plate (101), a plurality of telescopic rods (102), and a bottom frame (103); A mounting hole is provided in the middle of the mounting plate (101), and the external laser microscope can pass through the mounting hole. The bottom frame (103) is located below the mounting plate (101). The upper end of the telescopic rod (102) is connected to the lower surface of the mounting plate (101), and the lower end of the telescopic rod (102) is detachably connected to the bottom frame (103). When the telescopic rod (102) extends, its length can make the bottom frame (103) contact the lower surface of the external laser microscope. When the telescopic rod (102) contracts, its length can make the bottom frame (103) higher than the objective turret of the external laser microscope.

3. The light-shielding device applicable to Raman detection according to claim 2, wherein: The mounting plate (101) is of a square structure and extends downward in the middle to form a boss with a flange around the bottom. The bottom area of the boss is smaller than the upper surface area of the mounting plate (101). The telescopic rods (102) are at least 4 in number, and the telescopic rods (102) are a plurality of nested tubes.

4. The light-shielding device applicable to Raman detection according to claim 2, wherein: A plurality of connectors (110) matching the positions of the telescopic rods (102) are provided on the inner side wall of the light-shielding film (11), and a round hole (111) is provided in the middle of the connector (110).

5. The light-shielding device applicable to Raman detection according to claim 2, characterized in that: Openings are provided at the corners of the upper and lower ends of the light-shielding film (11), and an elastic band is provided at the upper end of the light-shielding film (11) for adjusting the tightness of the opening at the upper end of the light-shielding film (11).

6. The light-shielding device applicable to Raman detection according to claim 2, wherein: A plurality of second connectors (114) are provided at both ends of the light-shielding film (11) for respectively fixing the light-shielding film (11) to the mounting plate (101) and the bottom frame (103). A plurality of concave holes (112) matching the second connectors (114) are provided at both ends of the light-shielding film (11). Locking holes (113) matching the second connectors (114) are provided on the flange of the mounting plate (101) and the upper surface of the bottom frame (103).

7. The light-shielding device applicable to Raman detection according to claim 2, characterized in that: The locking assembly (12) includes a vertical rod (120) connected to the side wall of the bottom frame (103). Blocks (121) are connected to both ends of the vertical rod (120). Slots matching the blocks (121) are provided at the top of the mounting plate (101) and the bottom end of the microscope device.

8. The light-shielding device applicable to Raman detection according to claim 2, wherein: Handles (1030) are respectively connected to two opposite side walls of the bottom frame (103).

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