Raman single-channel probe structure

Abstract

The utility model belongs to the technical field of Raman detection, and particularly relates to a Raman single-channel probe structure which comprises a probe shell, a probe cavity is formed in the probe shell, a probe tube is inserted into one end of the probe cavity, and the probe tube and the probe shell are fixedly arranged through a fixing structure. And a light path valve structure is arranged between one end of the probe tube and the interior of the probe cavity. The Raman probe is used in cooperation with the semiconductor laser and the spectrograph, Raman spectrum measurement application is achieved, samples in solid, liquid or powder shapes can be checked, the Raman probe can guarantee high repeatability of Raman spectrum measurement, the Raman probe is suitable for different samples, flexible switching can be achieved, and the detection accuracy is high. The requirements of laboratory and industrial field detection can be met; the Raman probe adopts the coaxial light path design of transmitting and receiving, so that the plugging consistency and interchangeability of the probe are effectively improved, and good acquisition efficiency and reliability are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of Raman detection, and particularly relates to a Raman single-channel probe structure. 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 composition; they can also be used in criminal investigation and jewelry industry to detect drugs and identify gemstones. The instrument is known for its simple structure, easy operation, fast, efficient and accurate measurement, and low wavenumber measurement capability; it adopts confocal optical path design to obtain higher resolution, and can perform um-level micro-area detection on the sample surface, and can also be used for microscopic image measurement.

[0003] There are still some shortcomings in the existing Raman spectroscopy detection. The existing detection system has relatively simple functions, targets fewer detection products, and has a small scope of use.

[0004] Therefore, it is necessary to invent a Raman single-channel probe structure to solve the above problems. Utility Model Content

[0005] In view of the above problems, the utility model provides a Raman single-channel probe structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a Raman single-channel probe structure, comprising a probe housing, a probe cavity is provided inside the probe housing, a probe tube is plugged into one end of the probe cavity, a fixed structure is used between the probe tube and the probe housing for fixing, an optical path valve structure is provided between one end of the probe tube and the inside of the probe cavity, and a spectral optical path lens group and a laser optical path lens group are provided inside the probe cavity;

[0007] The other end of the probe cavity is fixedly connected with an optical fiber sleeve, and one end of the optical fiber sleeve is fixedly connected with an optical fiber holder, and one end of the optical fiber holder is connected with a laser FC interface and a spectrometer FC interface.

[0008] Furthermore, there are two optical fibers inside the optical fiber sleeve, and the two optical fibers are respectively connected to the laser FC interface and the spectrometer FC interface.

[0009] Furthermore, the fixing structure includes a fixed rotating rod, one end of which is fixedly sleeved with a knob, the other end of which is threadedly connected to the insertion position of the probe tube and the probe cavity, and the end portion is arranged corresponding to the probe tube.

[0010] Furthermore, the optical path valve structure includes a valve column, a valve groove matching the valve column is provided on the surface of the probe cavity, the valve column and the valve groove are rotatably connected, and a through hole matching the probe tube and the probe cavity is provided between the two sides of the valve column.

[0011] Furthermore, one end of the valve column is fixedly connected to a limiting protrusion, a limiting groove matching the limiting protrusion is provided on the surface of the valve groove, and a rotation angle of the limiting protrusion inside the limiting groove is set to 0-180 degrees.

[0012] Technical effects and advantages of the utility model:

[0013] 1. The utility model realizes Raman spectrum measurement application by using Raman probe in combination with semiconductor laser and spectrometer, and can inspect samples in solid, liquid or powder form. The Raman probe can ensure high repeatability of Raman spectrum measurement, and can be flexibly switched between different samples, and can meet the requirements of laboratory and industrial field detection; the Raman probe adopts the design of transmitting and receiving coaxial optical path, which effectively improves the plug-in consistency and interchangeability of the probe, and has good collection efficiency and reliability.

[0014] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 The overall structure schematic diagram of the embodiment of the utility model is shown;

[0017] Figure 2 A partial structural schematic diagram of an embodiment of the utility model is shown;

[0018] Figure 3 The utility model embodiment is shown Figure 2 Enlarged view of part A in the middle;

[0019] Figure 4 The fixing structure and the optical path valve structure schematic diagram of the embodiment of the utility model are shown;

[0020] In the figure: 1. probe housing; 2. probe cavity; 201. spectral optical path lens group; 202. laser optical path lens group; 3. probe tube; 4. optical fiber sleeve; 5. optical fiber holder; 6. laser FC interface; 7. spectrometer FC interface; 8. fixing rotary rod; 9. knob; 10. valve column; 11. valve slot; 12. through hole; 13. limiting protrusion; 14. limiting slot. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides a Raman single-channel probe structure, such as Figure 1-4 As shown, it includes a probe housing 1, a probe cavity 2 is opened inside the probe housing 1, a probe tube 3 is inserted at one end of the probe cavity 2, and a fixed structure is used between the probe tube 3 and the probe housing 1 for fixed arrangement, and the fixed structure includes a fixed rotating rod 8, a knob 9 is fixedly sleeved at one end of the fixed rotating rod 8, and the other end is threadedly connected to the position where the probe tube 3 and the probe cavity 2 are inserted, and the end is arranged corresponding to the probe tube 3, and an optical path valve structure is arranged between one end of the probe tube 3 and the inside of the probe cavity 2, so that The optical path valve structure includes a valve column 10, a valve slot 11 matching the valve column 10 is provided on the surface of the probe cavity 2, the valve column 10 is rotatably connected to the valve slot 11, and a through hole 12 matching the probe tube 3 and the probe cavity 2 is provided between the two sides of the valve column 10, one end of the valve column 10 is fixedly connected to a limiting protrusion 13, a limiting groove 14 matching the limiting protrusion 13 is provided on the surface of the valve slot 11, and the rotation angle of the limiting protrusion 13 inside the limiting groove 14 is set to 0-180 degrees;

[0023] The other end of the probe cavity 2 is fixedly connected to an optical fiber sleeve 4, and one end of the optical fiber sleeve 4 is fixedly connected to an optical fiber holder 5, one end of the optical fiber holder 5 is connected to a laser FC interface 6 and a spectrometer FC interface 7, and there are two optical fibers inside the optical fiber sleeve 4, and the two optical fibers are respectively connected to the laser FC interface 6 and the spectrometer FC interface 7; a spectral optical path lens group 201 and a laser optical path lens group 202 are arranged inside the probe cavity 2, wherein the spectral optical path lens group 201 and the laser optical path lens group 202 are respectively connected to the spectrometer FC interface 7 and the laser FC interface 6 through two optical fibers, for receiving optical path signals emitted by the spectrometer and the laser.

[0024] By using the Raman probe in conjunction with a semiconductor laser and a spectrometer, Raman spectroscopy measurement applications can be realized. Samples in solid, liquid or powder form can be inspected. The Raman probe can ensure high repeatability of Raman spectroscopy measurement and is suitable for flexible switching between different samples, meeting the requirements of laboratory and industrial field testing. The Raman probe adopts a coaxial optical path design for transmission and reception, which effectively improves the plug-in consistency and interchangeability of the probe, and has good collection efficiency and reliability.

[0025] Working principle of this utility model:

[0026] Refer to the instruction manual Figure 1-4 When installing the probe tube 3, insert the probe tube 3 into one end of the probe cavity 2, and then tighten the knob 9 so that the fixed rotary rod 8 tightens and fixes the probe tube 3. When it is necessary to switch the connection between the probe cavity 2 and the probe tube 3, the valve column 10 is rotated 90 degrees so that the two ends of the through hole 12 opened on the surface of the valve column 10 are connected to the probe cavity 2 and the probe tube 3 respectively, thereby forming a connected channel. By using the Raman probe in conjunction with a semiconductor laser and a spectrometer, the Raman spectrum measurement application is realized, and samples in the form of solid, liquid or powder can be inspected. The Raman probe can ensure high repeatability of Raman spectrum measurement, is suitable for flexible switching between different samples, and can meet the requirements of laboratory and industrial field detection; the Raman probe adopts a transmitting and receiving coaxial optical path design, which effectively improves the plug-in consistency and interchangeability of the probe, and has good collection efficiency and reliability.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A Raman single-channel probe structure, comprising a probe housing (1), characterized in that: A probe cavity (2) is provided inside the probe housing (1); a probe tube (3) is plugged into one end of the probe cavity (2); a fixed structure is used between the probe tube (3) and the probe housing (1); an optical path valve structure is provided between one end of the probe tube (3) and the inside of the probe cavity (2); and a spectral optical path lens group (201) and a laser optical path lens group (202) are provided inside the probe cavity (2); The other end of the probe cavity (2) is fixedly connected to an optical fiber sleeve (4), and one end of the optical fiber sleeve (4) is fixedly connected to an optical fiber holder (5), and one end of the optical fiber holder (5) is connected to a laser FC interface (6) and a spectrometer FC interface (7).

2. The Raman single-channel probe structure according to claim 1, characterized in that: There are two optical fibers inside the optical fiber sleeve (4), and the two optical fibers are respectively connected to the laser FC interface (6) and the spectrometer FC interface (7).

3. The Raman single-channel probe structure according to claim 1, characterized in that: The fixing structure comprises a fixed rotating rod (8), one end of which is fixedly sleeved with a knob (9), the other end of which is threadedly connected to a position where the probe tube (3) and the probe cavity (2) are plugged in, and the end portion is arranged corresponding to the probe tube (3).

4. The Raman single-channel probe structure according to claim 1, characterized in that: The optical path valve structure comprises a valve column (10), a valve slot (11) matching the valve column (10) is provided on the surface of the probe cavity (2), the valve column (10) and the valve slot (11) are rotatably connected, and a through hole (12) matching between the probe tube (3) and the probe cavity (2) is provided between two sides of the valve column (10).

5. The Raman single-channel probe structure according to claim 4, characterized in that: One end of the valve column (10) is fixedly connected to a limiting protrusion (13); a limiting groove (14) matching the limiting protrusion (13) is provided on the surface of the valve groove (11); and the rotation angle of the limiting protrusion (13) inside the limiting groove (14) is set to 0-180 degrees.

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