Handheld Raman spectrum analyzer

Abstract

The utility model discloses a handheld Raman spectrum analyzer which comprises a handheld Raman spectrum analyzer body, a protective cap and a detection probe fixedly mounted on the inner wall of the protective cap, and an assembly structure is arranged between the handheld Raman spectrum analyzer body and the protective cap. According to the utility model, through the arrangement of the assembly structure, one end of the lead penetrates through the two guide columns, then penetrates through the extension tube and is connected with the wiring end of the detection probe, when an object in water needs to be detected and analyzed, the locking cap is unscrewed to drive the conical spring jacket to loosen the extension tube, so that the extension tube can be pulled out of the guide hole, and the detection probe is fixed. The extension tube is arranged in the guide hole, then the extension tube is locked by the assembly component, so that the detection probe can be placed into water by the elongated extension tube, and objects in the water are detected and analyzed, and meanwhile, during conventional detection, the extension tube can be pushed into the guide hole and locked by the assembly component, so that the overall length of the device can be reduced, and the detection accuracy is improved. And the device is convenient to carry and hold.

Description

Technical Field

[0001] The utility model relates to the technical field of Raman spectrum analyzers, in particular to a handheld Raman spectrum analyzer. Background Art

[0002] Raman spectrometers are primarily used in research institutes, physics and chemistry laboratories at universities, and in the fields of biology and medicine for optical applications such as determining and confirming the composition of substances. They can also be used in criminal investigations and the jewelry industry for drug detection and gemstone identification. These instruments are renowned for their simple structure, ease of operation, rapid, efficient, and accurate measurements, and their low-wavenumber measurement capabilities. Their confocal optical design achieves higher resolution, enabling micro-area detection at the micrometer level on sample surfaces and microscopic image measurement.

[0003] China's authorization announcement number CN103308170B discloses a handheld Raman spectrometer. Currently, Raman spectrometers are limited to use in laboratories. If used in production and life, they must meet the conditions of portability, ease of operation, and safety, because in an environment with complex personnel flow, the harm of laser irradiation to the human body must be considered. The present invention is equipped with a human signal detection device on the same side of the box with the laser lens, and the human signal detection device is connected to the working circuit and the power supply; a handle is provided on the left or right side of the box; a grip sensor is provided on the outer side of the handle, and a trigger button is provided on the bottom or inside of the handle at the fingertips when holding the hand; and the two ends of the hand strap are fixed to the box on the same side of the handle. When the present invention is used on site, the safety factor is increased and the operation is convenient.

[0004] However, this device has the following drawbacks: due to the short laser lens, the laser probe cannot be inserted deep into the water when detecting and analyzing objects in water, which results in certain limitations. To address the above drawbacks, we propose a handheld Raman spectrometer. Utility Model Content

[0005] The purpose of the present invention is to provide a handheld Raman spectrometer to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A handheld Raman spectrometer includes a handheld Raman spectrometer body, a protective cap, and a detection probe fixedly mounted on the inner wall of the protective cap. An assembly structure is provided between the handheld Raman spectrometer body and the protective cap. The assembly structure comprises a wire, an extension tube, an assembly component, and a guide component for guiding the wire.

[0008] The assembly component includes an assembly cylinder fixedly mounted on the upper surface of the handheld Raman spectrometer body, the inner wall of the assembly cylinder is provided with a conical spring jacket, and the surface of the assembly cylinder is threadedly connected with a locking cap;

[0009] The guide assembly comprises a guide hole and a guide groove respectively provided on the inner wall of the handheld Raman spectrometer body. The guide groove and the guide hole are communicated with each other, and one end of the wire is fixedly installed on the inner wall of the guide groove.

[0010] Preferably, two guide posts are fixedly mounted on the inner walls of the guide groove.

[0011] Preferably, the inner wall of the assembly cylinder is provided with a tapered groove adapted to the tapered spring jacket, and the inner diameter of the tapered spring jacket is adapted to the outer diameter of the extension tube.

[0012] Preferably, the surface of the extension tube is provided with an external thread, and the inner wall of the protective cap is provided with an internal thread matching the external thread.

[0013] Preferably, a through hole for the extension tube to pass through is formed at the upper end of the locking cap.

[0014] Preferably, one end of the guide hole is communicated with the interior of the assembly cylinder.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. The utility model provides an assembly structure. After one end of the wire passes through the two guide posts, it passes through the extension tube and is connected to the terminal of the detection probe. When it is necessary to detect and analyze objects in the water, first loosen the locking cap to drive the conical spring sleeve to loosen the extension tube, so that the extension tube can be pulled out of the guide hole. Thereafter, the extension tube is locked by using the assembly component, so that the extended extension tube can be used to place the detection probe into the water and detect and analyze objects in the water. At the same time, during routine detection, the extension tube can be pushed into the guide hole and locked by using the assembly component, thereby reducing the overall length of the device and making it easier to carry and hold the device.

[0017] 2. The utility model provides a guide assembly. When the extension tube enters the guide hole, the two guide posts can be used to separate the wire into two strands, one strand is in the guide hole and the other strand is in the guide groove, thereby guiding the movement trajectory of the wire and avoiding the wire from being entangled in the guide hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the three-dimensional structure proposed for the utility model;

[0019] Figure 2 A schematic diagram of the front cross-section structure proposed for the utility model;

[0020] Figure 3 This is a schematic diagram of the front cross-section structure of the protective cap proposed in the utility model;

[0021] Figure 4 for Figure 2 A in the middle is an enlarged structural diagram;

[0022] Figure 5 This is a schematic diagram of the top-sectional structure proposed for the utility model.

[0023] In the figure: 1 handheld Raman spectrometer body, 2 protective cap, 3 detection probe, 4 wire, 5 extension tube, 6 assembly tube, 7 conical spring sleeve, 8 locking cap, 9 guide hole, 10 guide groove, 11 guide column. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0026] Reference Figure 1-5 A handheld Raman spectrometer includes a handheld Raman spectrometer body 1, a protective cap 2, and a detection probe 3 fixedly mounted on the inner wall of the protective cap 2. An assembly structure is provided between the handheld Raman spectrometer body 1 and the protective cap 2. The assembly structure consists of a wire 4, an extension tube 5, an assembly component, and a guide component that can guide the wire 4. The surface of the extension tube 5 is provided with an external thread, and the inner wall of the protective cap 2 is provided with an internal thread that matches the external thread. The inner wall of the protective cap 2 is provided with a waterproof sealing ring. After the internal thread on the inner wall of the protective cap 2 is screwed into the external thread on the surface of the extension tube 5, the protective cap 2 and the extension tube 5 can be assembled into one.

[0027] The assembly component includes an assembly cylinder 6 fixedly mounted on the upper surface of the handheld Raman spectrometer body 1, the inner wall of the assembly cylinder 6 is provided with a conical spring jacket 7, the inner wall of the assembly cylinder 6 is provided with a conical groove adapted to the conical spring jacket 7, the inner diameter of the conical spring jacket 7 is adapted to the outer diameter of the extension tube 5, and the surface of the assembly cylinder 6 is threadedly connected with a locking cap 8, the upper end of the locking cap 8 is provided with a through hole for the extension tube 5 to pass through, the extension tube 5 is inserted into the inner wall of the conical spring jacket 7, and then the conical spring jacket 7 is placed in the assembly cylinder 6, and then tightening the locking cap 8 can drive the conical surface on the conical spring jacket 7 to contact the conical groove, thereby driving the conical spring jacket 7 to contract and clamp the extension tube 5, and then the extension tube 5 can be locked to the inner wall of the assembly cylinder 6.

[0028] The guide assembly includes a guide hole 9 and a guide groove 10 respectively opened on the inner wall of the handheld Raman spectrometer body 1. The guide groove 10 and the guide hole 9 are connected to each other. One end of the guide hole 9 is connected to the interior of the assembly cylinder 6, and one end of the wire 4 is fixedly installed on the inner wall of the guide groove 10. Two guide posts 11 are fixedly installed on the inner wall of the guide groove 10. After one end of the wire 4 passes through the two guide posts 11, it passes through the extension tube 5 and is connected to the terminal of the detection probe 3, so that the detection probe 3 can be electrically connected to the handheld Raman spectrometer body 1 using the wire 4.

[0029] When it is necessary to detect and analyze objects in the water, first loosen the locking cap 8 to drive the conical spring sleeve 7 to loosen the extension tube 5, so that the extension tube 5 can be pulled out of the guide hole 9 and extended. Then, use the assembly component to lock the stretched extension tube 5 in the assembly cylinder 6 to ensure the stability of the extension tube 5. Then, use the stretched extension tube 5 to put the detection probe 3 into the water and detect and analyze objects in the water.

[0030] During routine testing, the extension tube 5 can be pushed into the guide hole 9 and locked using the assembly component, thereby reducing the overall length of the device and making it easier to carry and hold the device. When the extension tube 5 is pushed into the guide hole 9, the two guide columns 11 can be used to divide the wire 4 into two strands, one wire 4 is in the guide hole 9, and the other wire 4 is in the guide groove 10, thereby guiding the movement trajectory of the wire 4 and avoiding the wire 4 from being entangled in the guide hole 9.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A handheld Raman spectrometer, comprising a handheld Raman spectrometer body (1), a protective cap (2), and a detection probe (3) fixedly mounted on the inner wall of the protective cap (2), characterized in that: An assembly structure is provided between the handheld Raman spectrometer body (1) and the protective cap (2), the assembly structure consisting of a wire (4), an extension tube (5), an assembly component, and a guide component capable of guiding the wire (4); The assembly component comprises an assembly cylinder (6) fixedly mounted on the upper surface of a handheld Raman spectrometer body (1); the inner wall of the assembly cylinder (6) is provided with a conical spring jacket (7); and the surface of the assembly cylinder (6) is threadedly connected with a locking cap (8); The guide assembly comprises a guide hole (9) and a guide groove (10) respectively provided on the inner wall of the handheld Raman spectrometer body (1); the guide groove (10) and the guide hole (9) are communicated with each other, and one end of the wire (4) is fixedly mounted on the inner wall of the guide groove (10).

2. A handheld Raman spectrometer according to claim 1, characterized in that: Two guide posts (11) are fixedly mounted on the inner walls of the guide groove (10).

3. The handheld Raman spectrometer according to claim 1, characterized in that: The inner wall of the assembly cylinder (6) is provided with a tapered groove adapted to the tapered spring jacket (7), and the inner diameter of the tapered spring jacket (7) is adapted to the outer diameter of the extension tube (5).

4. The handheld Raman spectrometer according to claim 1, characterized in that: The surface of the extension tube (5) is provided with an external thread, and the inner wall of the protective cap (2) is provided with an internal thread matching the external thread.

5. The handheld Raman spectrometer according to claim 1, characterized in that: The upper end of the locking cap (8) is provided with a through hole for the extension tube (5) to pass through.

6. The handheld Raman spectrometer according to claim 1, characterized in that: One end of the guide hole (9) is communicated with the interior of the assembly cylinder (6).

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