Raman spectrum analyzer

By using magnets to fix the protective round frame and detection contacts in the Raman spectroscopic analyzer, laser diffusion is avoided, and the influence of external light sources is reduced through the oil storage round frame and circular cover plate of opaque material, the problems of laser diffusion and external light sources in the prior art are solved, and the accuracy and practicality of measurement are improved.

CN222896091UActive Publication Date: 2025-05-23HUBEI GRAIN OIL & FOOD QUALITY SUPERVISION & TESTING CENT +1
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Patent Information

Application Number
CN202421323793.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-11
Publication Date
2025-05-23
Estimated Expiration
2034-06-11

AI Technical Summary

Technical Problem

The existing Raman spectroscopy analyzers lack protection devices during the detection process, which leads to laser diffusion, misreading peripheral substance information, and poor adaptability of transparent containers, which are susceptible to external light sources, resulting in measurement results deviations and errors.

Method used

A protective disassembly structure including N-pole ring magnet and S-pole ring magnet was designed to fix the protective circular frame and detection contacts through the magnet to avoid laser diffusion; at the same time, an opaque oil storage circular frame and circular cover plate are used to reduce the influence of external light sources, and the practicality of the analyzer is improved through auxiliary base structure and disassembly structure.

Benefits of technology

It effectively avoids laser diffusion, reduces misreading results, improves measurement accuracy and practicality, and enhances the linkage performance and functionality of the analyzer.

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Abstract

The utility model relates to a Raman spectrum analyzer, which belongs to the technical field of Raman spectrum analyzers, and comprises an analyzer body, the top of the analyzer body is provided with a detection contact, and the detection contact is composed of a laser, a sample collection lens, a front light path assembly, a spectrometer coupling lens and the like; a protective dismounting structure is arranged at the top of the analyzer body and outside the detection contact, and exposed parts of the protective round frame and the detection contact can be mounted through an N-pole annular magnet and an S-pole annular magnet, so that the situation that a result is inaccurate due to the fact that laser emitted by the detection contact is diffused and peripheral liquid information is read in can be avoided; meanwhile, under the action of the oil storage round frame, the transparent round plate at the bottom can be matched with laser emitted by the detection contact for detection, and the whole oil storage round frame and the round cover plate are made of non-transparent materials, so that the influence of an external light source on the rapeseed oil is reduced in the detection process of the rapeseed oil.
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Description

Technical Field

[0001] The utility model relates to the field of Raman spectrum analyzers, and particularly to a Raman spectrum analyzer. Background Art

[0002] Raman spectrometers are mainly used in scientific research institutes, physical and chemical laboratories of colleges and universities, biological and medical fields, and other optical fields to study the determination and confirmation of material components. Raman spectrometers can form different spectra for different substances in liquids under the irradiation of lasers. Therefore, in the detection and analysis of rapeseed oil, Raman spectrometers can be used as detection and analysis instruments.

[0003] After checking the publication (announcement) number: CN219104735U, a portable Raman spectrometer is disclosed. This technology discloses "including an analyzer, a detection head and two connecting blocks, the top of the analyzer is fixedly connected to the bottom of the detection head, and the sides of the two connecting blocks close to each other are fixedly connected to the surface of the detection head. The utility model sets the analyzer, the detection head, the connecting block, the auxiliary assembly, the auxiliary box, the movable block and the box cover for coordinated use. By pushing the control rod and the adjustment block forward, the adjustment block drives the surface of the slider to squeeze the inner wall of the slide groove, and the slide groove drives the rotating rod to rotate around the rotating column. At this time, the rotating rod leaves the initial position and merges the movable block with the connecting block, thereby solving the problem that most Raman spectrometers in the prior art lack protective devices, so the radiation emitted by the detection head of the Raman spectrometer when analyzing the substance will cause harm to the human body, thereby reducing the practicality of the Raman spectrometer";

[0004] In the above-mentioned comparative documents, in actual use, when the Raman spectrometer emits laser to irradiate the rapeseed oil sample and collect information, there is no structure to concentrate the light source, which causes the emitted laser to diffuse very easily. At this time, it is easy to collect the surrounding material information incorrectly, which leads to deviation in the results. In addition, rapeseed oil is often placed in a separate transparent container for auxiliary measurement. Since the transparent container has poor compatibility with the detection contact of the Raman spectrometer, it is very easy to be affected by the external light source during the detection process, which leads to errors in the measurement results.

[0005] In order to solve the above problems, this application proposes a Raman spectrometer. Summary of the invention

[0006] The utility model aims at the technical problems existing in the prior art and provides a Raman spectrometer.

[0007] The technical solution of the present invention to solve the above technical problems is as follows: a Raman spectrometer, comprising an analyzer body,

[0008] A detection contact is provided on the top of the analyzer body;

[0009] A protective disassembly structure is provided on the top of the analyzer body, outside the detection contact;

[0010] An auxiliary base structure is provided at the bottom of the analyzer body;

[0011] The protective disassembly and assembly structure includes an annular groove, which is opened on the top of the analyzer body. An N-pole annular magnet is fixedly connected to the inner wall of the annular groove. A circular clamping hole is opened on the inner wall of the N-pole annular magnet. An S-pole annular magnet is fixedly arranged on the top of the N-pole annular magnet. A protective circular frame is fixedly connected to the top of the outer surface of the S-pole annular magnet. A circular clamping block is fixedly connected to the bottom of the outer surface of the S-pole annular magnet. The circular clamping block can be clamped into the inner wall of the circular clamping hole.

[0012] A first annular groove is provided on the top of the outer surface of the protective circular frame, a first annular clamping block is clamped on the inner wall of the first annular groove, an oil storage circular frame is fixedly connected to the top of the outer surface of the first annular clamping block, and a transparent circular plate is fixedly connected to the bottom of the inner wall of the oil storage circular frame. The oil storage circular frame and the protective circular frame can be fixed by arranging the first annular clamping block and the first annular groove.

[0013] A second annular groove is provided on the top of the outer surface of the oil storage circular frame, a second annular clamping block is clamped on the inner wall of the second annular groove, and a circular cover plate is fixedly connected to the top of the second annular clamping block. By setting the second annular clamping block and the second annular groove, the circular cover plate and the oil storage circular frame can be fixed.

[0014] The outer surface of the protective circular frame is symmetrically fixedly connected with a rectangular block, the inner wall of the rectangular block is provided with a rectangular groove, a fixing rod is fixedly connected between the top and bottom of the inner wall of the rectangular groove, the outer surface of the fixing rod is slidably connected with a rectangular slider, the outer surface of the fixing rod is sleeved with a reset spring, by arranging the fixing rod and the rectangular slider, the rectangular slider can slide on the outer surface of the fixing rod, and then cooperate with the reset spring to be reset.

[0015] A U-shaped frame is fixedly connected to one side of the outer surface of the rectangular slider, a rotating rod is rotatably connected between the two sides of the inner wall of the U-shaped frame, a rotating round block is fixedly connected to the outer surface of the rotating rod, and a torsion spring is sleeved on the outer surface of the rotating rod. By arranging the rotating rod and the torsion spring, the rotating rod and the rotating round block can be reset after rotation.

[0016] An operating panel is fixedly connected to the outer surface of the rotating circular block, an oblique circular clamping rod is fixedly connected to the bottom of the outer surface of the operating panel, an oblique circular clamping hole is provided on one side of the outer surface of the rectangular block below the rectangular groove, and the oblique circular clamping rod can be rotatably clamped into the inner wall of the oblique circular clamping hole. By providing the oblique circular clamping hole and the oblique circular clamping rod, the operating panel can be auxiliary fixed.

[0017] The auxiliary base structure includes a rectangular card block, which is fixedly connected to the bottom of the outer surface of the analyzer body; the outer surface of the rectangular card block is clamped with a rectangular card frame; the outer surface of the rectangular card frame is fixedly connected to a bottom plate; by arranging the rectangular card block and the rectangular card frame, the bottom plate and the analyzer body can be fixed.

[0018] A first plugging hole is formed on the inner wall of the rectangular block, a second plugging hole is formed on the inner wall of the rectangular frame, a round plugging rod is inserted into the inner walls of the first and second plugging holes, one end of the round plugging rod is fixedly connected to a threaded plugging rod, one end of the threaded plugging rod is threadedly connected to a fixing nut, and one end of the round plugging rod away from the threaded plugging rod is fixedly connected to a handle rod. By setting the threaded plugging rod, the handle rod can be fixed to the rectangular block and the rectangular frame.

[0019] The beneficial effects of this utility model are:

[0020] The exposed parts of the protective circular frame and the detection contact can be installed through the N-pole annular magnet and the S-pole annular magnet, thereby preventing the laser emitted by the detection contact from diffusing, thereby preventing the surrounding liquid information from being read in and causing inaccurate results. At the same time, under the action of the oil storage circular frame, the transparent circular plate at the bottom can cooperate with the laser emitted by the detection contact for detection, and the entire oil storage circular frame and the circular cover plate are made of opaque material, thereby reducing the influence of external light sources on the rapeseed oil during the detection process. At the same time, the protective circular frame and the oil storage circular frame can be disassembled and assembled, thereby increasing the overall linkage performance and being equipped with an auxiliary disassembly and replacement structure, thereby increasing the overall functionality;

[0021] Under the action of the rectangular card block and the rectangular card frame, the analyzer body can be snapped onto the bottom plate during detection and data reading, and can be placed vertically on a horizontal plane, thereby effectively avoiding the situation where rapeseed oil leaks from between the oil storage circular frame and the circular cover plate due to tilted placement. By setting a round plug rod, it can cooperate with the first plug hole, the second plug hole and the threaded card rod so that the fixing nut can fix it, and then when carrying it, a handle rod can be provided as a force-applying component for carrying, which is convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0023] Figure 2This is a schematic diagram of the structure of the practical analyzer.

[0024] Figure 3 This is a schematic diagram of the practical oil storage circular frame structure;

[0025] Figure 4 This is a schematic diagram of the practical protective circular frame structure.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Analyzer body; 2. Detection contact;

[0028] 3. Protective disassembly and assembly structure; 31. Annular groove; 32. N-pole annular magnet; 33. Circular clamping hole; 34. Protective circular frame; 35. S-pole annular magnet; 36. Circular clamping block; 37. First annular clamping groove; 38. First annular clamping block; 39. Oil storage circular frame; 310. Transparent circular plate; 311. Second annular clamping groove; 312. Second annular clamping block; 313. Circular cover plate; 314. Rectangular block; 315. Rectangular groove; 316. Fixed rod; 317. Rectangular slider; 318. U-shaped frame; 319. Rotating rod; 320. Rotating circular block; 321. Torsion spring; 322. Operation panel; 323. Oblique circular clamping rod; 324. Reset spring; 325. Oblique circular clamping hole;

[0029] 4. Auxiliary base structure; 41. Rectangular clamping block; 42. Rectangular clamping frame; 43. Bottom plate; 44. First plug hole; 45. Second plug hole; 46. Round plug rod; 47. Handle rod; 48. Threaded clamping rod; 49. Fixing nut. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0031] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0032] In the description of the present application, the term "for example" is used to mean "used as an example, illustration or description". Any embodiment described as "for example" in the present application is not necessarily to be interpreted as being more preferred or advantageous than other embodiments. In order to enable any technician in the field to implement and use the present utility, the following description is given. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present utility can be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid unnecessary details that make the description of the present utility obscure. Therefore, the present utility is not intended to be limited to the embodiments shown, but is consistent with the widest range of principles and features disclosed in the present application.

[0033] Reference Figure 1-2 A Raman spectrometer comprises an analyzer body 1, characterized in that:

[0034] A detection contact 2 is arranged on the top of the analyzer body 1, and the detection contact 2 is composed of components such as a laser, a sample collection lens, a front optical path component and a spectrometer coupling lens;

[0035] A protective disassembly structure 3 is provided on the top of the analyzer body 1 and outside the detection contact 2;

[0036] An auxiliary base structure 4 is provided at the bottom of the analyzer body 1;

[0037] The protective disassembly and assembly structure 3 includes an annular groove 31, which is provided at the top of the analyzer body 1. An N-pole annular magnet 32 ​​is fixedly connected to the inner wall of the annular groove 31. A circular clamping hole 33 is provided on the inner wall of the N-pole annular magnet 32. There are four circular clamping holes 33, which are arranged equidistantly on the outer surface of the N-pole annular magnet 32. An S-pole annular magnet 35 is fixedly provided on the top of the N-pole annular magnet 32. A protective circular frame 34 is fixedly connected to the top of the outer surface of the S-pole annular magnet 35. A circular clamping block 36 is fixedly connected to the bottom of the outer surface of the S-pole annular magnet 35. There are four circular clamping blocks 36, which are arranged equidistantly on the outer surface of the S-pole annular magnet 35. The circular clamping block 36 is made of rubber to prevent the magnetism of the magnet from affecting it. The circular clamping block 36 can be clamped into the inner wall of the circular clamping hole 33.

[0038] The exposed parts of the protective circular frame 34 and the detection contact 2 can be installed through the N-pole annular magnet 32 ​​and the S-pole annular magnet 35, thereby preventing the laser emitted by the detection contact 2 from diffusing and the surrounding liquid information from being read in, resulting in inaccurate results. At the same time, under the action of the oil storage circular frame 39, the transparent circular plate 310 at the bottom can cooperate with the laser emitted by the detection contact 2 for detection, and the entire oil storage circular frame 39 and the circular cover plate 313 are made of opaque material, thereby reducing the influence of external light sources on the rapeseed oil during the detection process. At the same time, the protective circular frame 34 and the oil storage circular frame 39 can be disassembled and assembled, thereby increasing the overall linkage performance and are equipped with an auxiliary disassembly and replacement structure, which increases the overall functionality.

[0039] Reference Figure 3 and Figure 4 A first annular groove 37 is provided at the top of the outer surface of the protective circular frame 34, and a first annular block 38 is clamped on the inner wall of the first annular groove 37. An oil storage circular frame 39 is fixedly connected to the top of the outer surface of the first annular block 38, and a transparent circular plate 310 is fixedly connected to the bottom of the inner wall of the oil storage circular frame 39. The transparent circular plate 310 is made of transparent plastic or transparent glass, which can allow the laser to penetrate and assist in the analysis of the rapeseed oil inside.

[0040] Reference Figure 3 and Figure 4 A second annular groove 311 is provided at the top of the outer surface of the oil storage circular frame 39, a second annular block 312 is clamped on the inner wall of the second annular groove 311, and a circular cover plate 313 is fixedly connected to the top of the second annular block 312 to fix the circular cover plate 313.

[0041] Reference Figure 3 and Figure 4 The outer surface of the protective circular frame 34 is symmetrically fixedly connected with a rectangular block 314, the inner wall of the rectangular block 314 is provided with a rectangular groove 315, a fixing rod 316 is fixedly connected between the top and bottom of the inner wall of the rectangular groove 315, the outer surface of the fixing rod 316 is slidably connected with a rectangular slider 317, the outer surface of the fixing rod 316 is sleeved with a reset spring 324, the two ends of the reset spring 324 are respectively fixedly connected to the rectangular slider 317 and the rectangular groove 315, and the rectangular slider 317 can be reset.

[0042] Reference Figure 3 and Figure 4A U-shaped frame 318 is fixedly connected to one side of the outer surface of the rectangular slider 317, and a rotating rod 319 is rotatably connected between the two sides of the inner wall of the U-shaped frame 318. A rotating round block 320 is fixedly connected to the outer surface of the rotating rod 319. A torsion spring 321 is sleeved on the outer surface of the rotating rod 319. The two ends of the torsion spring 321 are respectively fixedly connected to the rotating round block 320 and the U-shaped frame 318, so that the rotating rod 319 and the rotating round block 320 can be reset.

[0043] Reference Figure 4 An operating plate 322 is fixedly connected to the outer surface of the rotating round block 320, and an anti-skid protrusion is fixedly connected to the top of the outer surface of the operating plate 322 to prevent sliding during operation. An oblique circular clamping rod 323 is fixedly connected to the bottom of the outer surface of the operating plate 322. An oblique circular clamping hole 325 is provided on one side of the outer surface of the rectangular block 314 below the rectangular groove 315. The oblique circular clamping rod 323 can be rotated and clamped into the inner wall of the oblique circular clamping hole 325, so that the operating plate 322 can be at a certain angle to the rectangular block 314 for easy pressing.

[0044] Reference Figure 2 The auxiliary base structure 4 includes a rectangular card block 41, which is fixedly connected to the bottom of the outer surface of the analyzer body 1. The outer surface of the rectangular card block 41 is clamped with a rectangular card frame 42, which can assist in fixing the bottom plate. The bottom of the outer surface of the rectangular card frame 42 is fixedly connected to the bottom plate 43.

[0045] Reference Figure 2 A first insertion hole 44 is formed on the inner wall of the rectangular block 41, and a second insertion hole 45 is formed on the inner wall of the rectangular card frame 42. When the rectangular block 41 is fixed to the rectangular card frame 42, the first insertion hole 44 is aligned with the second insertion hole 45. A round plug rod 46 is inserted into the inner walls of the first plug hole 44 and the second plug hole 45. One end of the round plug rod 46 is fixedly connected to a threaded clamp rod 48. One end of the threaded clamp rod 48 is threadedly connected to a fixing nut 49. The end of the round plug rod 46 away from the threaded clamp rod 48 is fixedly connected to a handle rod 47.

[0046] Working principle:

[0047] The Raman spectrometer first places rapeseed oil on the inner wall of the oil storage circular frame 39, then fixes the second annular block 312 to the second annular groove 311, and the circular cover 313 can be fixed to the oil storage circular frame 39. Then, the first annular block 38 is inserted into the inner wall of the first annular groove 37, so that the oil storage circular frame 39 is fixed to the protective circular frame 34.

[0048] At this time, the circular clamping block 36 is clamped into the inner wall of the circular clamping hole 33, so that the N-pole annular magnet 32 can be fixed to the S-pole annular magnet 35. At this time, the laser emitted by the laser in the detection contact 2 on the analyzer body 1 can be emitted through the sample collection lens under the refraction of the front optical path component, and then can be emitted from the inner wall of the protective circular frame 34 to the inner wall of the oil storage circular frame 39, so as to analyze the rapeseed oil inside;

[0049] When the oil storage circular frame 39 needs to be disassembled and replaced, press the operation board 322 at this time, so that the operation board 322 can drive the rotating rod 319 and the rotating circular block 320 to rotate, causing the torsion spring 321 to deform. At this time, the inclined circular clamping rod 323 can be driven to rotate, and then it can be clamped into the inner wall of the inclined circular clamping hole 325, so that the operation board 322 can form a certain angle with the rectangular block 314 and tilt;

[0050] At the same time as the above movement, the rectangular slider 317 can slide on the outer surface of the fixed rod 316, and then can drive the U-shaped frame 318 to move. When the oil storage circular frame 39 is pulled upward, the protective circular frame 34 will not separate.

[0051] Although the preferred embodiments of the present utility model have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present utility model.

[0052] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model also intends to include these modifications and variations.

Claims

1. A Raman spectrometer, comprising an analyzer body (1), characterized in that: A detection contact (2) is provided on the top of the analyzer body (1); A protective disassembly structure (3) is provided on the top of the analyzer body (1) and outside the detection contact (2); An auxiliary base structure (4) is provided at the bottom of the analyzer body (1); The protective disassembly and assembly structure (3) comprises an annular groove (31), wherein the annular groove (31) is provided at the top of the analyzer body (1), an N-pole annular magnet (32) is fixedly connected to the inner wall of the annular groove (31), a circular clamping hole (33) is provided on the inner wall of the N-pole annular magnet (32), an S-pole annular magnet (35) is fixedly arranged on the top of the N-pole annular magnet (32), a protective circular frame (34) is fixedly connected to the top of the outer surface of the S-pole annular magnet (35), and a circular clamping block (36) is fixedly connected to the bottom of the outer surface of the S-pole annular magnet (35), and the circular clamping block (36) can be clamped into the inner wall of the circular clamping hole (33).

2. The Raman spectrometer according to claim 1, characterized in that: A first annular clamping groove (37) is provided at the top of the outer surface of the protective circular frame (34); a first annular clamping block (38) is clamped on the inner wall of the first annular clamping groove (37); an oil storage circular frame (39) is fixedly connected to the top of the outer surface of the first annular clamping block (38); and a transparent circular plate (310) is fixedly connected to the bottom of the inner wall of the oil storage circular frame (39).

3. The Raman spectrometer according to claim 2, characterized in that: A second annular clamping groove (311) is provided at the top of the outer surface of the oil storage circular frame (39); a second annular clamping block (312) is clamped on the inner wall of the second annular clamping groove (311); and a circular cover plate (313) is fixedly connected to the top of the second annular clamping block (312).

4. The Raman spectrometer according to claim 1, characterized in that: A rectangular block (314) is symmetrically fixedly connected to the outer surface of the protective circular frame (34), a rectangular groove (315) is opened on the inner wall of the rectangular block (314), a fixing rod (316) is fixedly connected between the top and bottom of the inner wall of the rectangular groove (315), a rectangular slider (317) is slidably connected to the outer surface of the fixing rod (316), and a reset spring (324) is sleeved on the outer surface of the fixing rod (316).

5. The Raman spectrometer according to claim 4, characterized in that: A U-shaped frame (318) is fixedly connected to one side of the outer surface of the rectangular sliding block (317); a rotating rod (319) is rotatably connected between the two sides of the inner wall of the U-shaped frame (318); a rotating round block (320) is fixedly connected to the outer surface of the rotating rod (319); a torsion spring (321) is sleeved on the outer surface of the rotating rod (319); and two ends of the torsion spring (321) are respectively fixedly connected to the rotating round block (320) and the U-shaped frame (318).

6. The Raman spectrometer according to claim 5, characterized in that: An operating plate (322) is fixedly connected to the outer surface of the rotating circular block (320), an anti-slip protrusion is fixedly connected to the top of the outer surface of the operating plate (322), an oblique circular clamping rod (323) is fixedly connected to the bottom of the outer surface of the operating plate (322), and an oblique circular clamping hole (325) is provided on one side of the outer surface of the rectangular block (314) below the rectangular groove (315), and the oblique circular clamping rod (323) can be rotatably clamped into the inner wall of the oblique circular clamping hole (325).

7. The Raman spectrometer according to claim 1, characterized in that: The auxiliary base structure (4) comprises a rectangular card block (41), wherein the rectangular card block (41) is fixedly connected to the bottom of the outer surface of the analyzer body (1); the outer surface of the rectangular card block (41) is clamped with a rectangular card frame (42), and the outer surface bottom of the rectangular card frame (42) is fixedly connected to a bottom plate (43).

8. The Raman spectrometer according to claim 7, characterized in that: The inner wall of the rectangular block (41) is provided with a first insertion hole (44), the inner wall of the rectangular frame (42) is provided with a second insertion hole (45), the inner walls of the first insertion hole (44) and the second insertion hole (45) are provided with round insertion rods (46), one end of the round insertion rod (46) is fixedly connected to a threaded clamping rod (48), one end of the threaded clamping rod (48) is threadedly connected to a fixing nut (49), and one end of the round insertion rod (46) away from the threaded clamping rod (48) is fixedly connected to a handle rod (47).

Citation Information

Patent Citations

  • Portable Raman spectrum analyzer

    CN219104735U