A visible light spectrophotometer

Abstract

This utility model discloses a visible light spectrophotometer, including a photometer body and a detection frame. A sliding groove is formed on the inner side of the detection frame, with openings at both ends located on the left and right sidewalls of the frame. Two limiting rods are slidably connected to the inner side of the sliding groove. A screw is threadedly connected to the center of the top of the detection frame, with the bottom end of the screw located between the two limiting rods. This utility model makes the detection frame detachable. During installation, it is simply placed into the detection groove, and then the screw is turned downwards, pushing the two limiting rods outwards from the sliding groove to fix the detection frame. This significantly improves assembly and disassembly efficiency, facilitates deep cleaning and maintenance of the precision structures such as the internal sliding groove and positioning groove of the detection frame, avoids cross-contamination, and ensures the accuracy of long-term detection data.

Description

Technical Field

[0001] This utility model relates to the field of spectral detection technology, specifically a visible light spectrophotometer. Background Technology

[0002] Visible light spectrophotometers belong to the field of spectroscopic analysis instruments. They are quantitative analysis devices based on the absorption characteristics of substances to visible light of specific wavelengths. By measuring the absorbance of sample solutions in the wavelength range of 400-760nm, they can determine the concentration, purity, and molecular structure of target substances. This technology is widely used in the analysis of material composition in fields such as biomedicine, environmental monitoring, food safety, and materials science.

[0003] Most existing visible light spectrophotometers use a fixed structure for their detection racks, which makes disassembly difficult and makes it hard to thoroughly clean the inside of the rack and the cuvette positioning slots. Long-term use can lead to the accumulation of samples or contaminants, affecting detection accuracy. In addition, the traditional method of fixing cuvettes relies on a single limiting structure, which can cause the cuvettes to shift or even fall off during the detection process due to mechanical vibration or operational errors, resulting in unstable measurement results. Furthermore, disassembling the rack requires removing the cuvettes one by one, which is cumbersome and poses safety hazards, thus limiting experimental efficiency and equipment reliability. Utility Model Content

[0004] The purpose of this invention is to provide a visible light spectrophotometer that solves the problems mentioned in the background art, such as the difficulty in disassembling and cleaning existing visible light spectrophotometers, the inconvenience of cleaning, and the reliance on a single limiting structure for fixing, which makes the cuvettes prone to displacement or even falling off due to mechanical vibration or operational errors during the detection process.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a visible light spectrophotometer, comprising a spectrophotometer body and a detection frame, wherein a sliding groove is provided on the inner side of the detection frame, and the openings at both ends of the sliding groove are respectively located on the left and right sidewall surfaces of the detection frame; two limiting rods are slidably connected to the inner side of the sliding groove; a screw is threadedly connected to the center of the top of the detection frame, and the bottom end of the screw is located between the two limiting rods.

[0006] In this technical solution, when installing the testing frame, simply place it into the testing slot, then turn the screw to move it downwards, pushing the two limit rods outwards from the slide groove, thereby fixing the testing frame in place. This significantly improves assembly and disassembly efficiency, facilitates deep cleaning and maintenance of the precision structures such as the internal slide groove and positioning slot of the testing frame, avoids cross-contamination, and ensures the accuracy of long-term testing data.

[0007] Preferably, the top of the testing frame has four positioning slots, a cuvette is inserted into the inner side of the positioning slot, and the inner sidewall of the positioning slot has a telescopic groove, which is connected to the sliding groove.

[0008] Preferably, a stop block is fixedly connected to the outer wall of the limiting rod, and the stop block is located inside the telescopic groove and slidably connected to the telescopic groove.

[0009] Preferably, the left and right inner walls of the detection groove of the photometer body are provided with limiting grooves, and the limiting grooves and the limiting rod are at the same height.

[0010] Preferably, a locking block is fixedly connected to the bottom horizontal surface of the detection slot of the photometer body, and a corresponding locking slot is fixedly connected to the bottom of the detection frame.

[0011] Preferably, a spring is fixedly connected between the limiting rod and the inner wall of the slide groove, and one end of the limiting rod located inside the slide groove contacts the bottom of the screw.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model makes the testing frame detachable. During installation, simply place it into the testing slot, then turn the screw to move it downwards, pushing the two limit rods to move outwards from the slide groove, thereby fixing the testing frame. This significantly improves the efficiency of disassembly and assembly, facilitates deep cleaning and maintenance of the precision structures such as the slide groove and positioning slot inside the testing frame, avoids cross-contamination, and ensures the accuracy of long-term testing data.

[0014] 2. This utility model features a telescopic groove on one side of the positioning groove. When the limiting rod extends, the abutment on its side wall also moves accordingly. After the cuvette is inserted, the screw is rotated in the opposite direction to move the limiting rod and the abutment back, thereby clamping the cuvette. This not only effectively prevents the cuvette from shifting due to vibration or tilting during the testing process, but also eliminates the need to remove the cuvette separately when disassembling the testing frame. The entire unit can be removed directly, significantly reducing operational complexity and the risk of sample spillage, and improving the safety and stability of the testing process. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is an overall view of the present invention;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the positioning groove and telescopic groove of this utility model.

[0019] In the diagram: 1. Photometer body; 101. Detection groove; 2. Limiting groove; 3. Locking block; 4. Detection frame; 401. Positioning groove; 402. Telescopic groove; 403. Slide groove; 5. Limiting rod; 501. Abutment block; 6. Spring; 7. Screw; 8. Locking groove; 9. Cuvette. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description will further elaborate on them in conjunction with specific embodiments.

[0021] A visible light spectrophotometer, see [link to relevant documentation] Figures 1 to 3 The device includes a photometer body 1 and a detection frame 4. A sliding groove 403 is provided on the inner side of the detection frame 4, with openings at both ends of the groove 403 located on the left and right sidewalls of the detection frame 4. Two limiting rods 5 are slidably connected to the inner side of the sliding groove 403. Limiting grooves 2 are provided on the left and right inner sidewalls of the detection slot 101 of the photometer body 1. The limiting grooves 2 and the limiting rods 5 are at the same height. A screw 7 is threadedly connected to the center of the top of the detection frame 4, with the bottom end of the screw 7 located between the two limiting rods 5. During installation, the detection frame 4 is placed into the detection slot 101, at which point the limiting grooves 2 align with the sliding groove 403. Then, the screw 7 is rotated, moving downwards and pushing the two limiting rods 5 to the sides, thus inserting them into the limiting grooves 2 on both sides, keeping the detection frame 4 fixed. It can also be removed for cleaning and maintenance at any time, making it highly practical.

[0022] Specifically, such as Figure 1 and Figure 3 As shown, the top of the testing frame 4 has four positioning slots 401. A cuvette 9 is inserted into the inner side of the positioning slot 401, and a telescopic groove 402 is formed on the inner side wall of the positioning slot 401. The telescopic groove 402 communicates with the sliding groove 403. A stop block 501 is fixedly connected to the outer side wall of the limiting rod 5. The stop block 501 is located inside the telescopic groove 402 and is slidably connected to the telescopic groove 402. The cuvette 9 can be inserted into the positioning slot 401. The stop block 501 will resist the movement when in the initial position. The opening of the positioning groove 401 is blocked. The positioning groove 401 will only be released after the test frame 4 is placed into the test groove 101 and fixed by the limiting rod 5. At this time, the abutment block 501 will retract into the telescopic groove 402. After the cuvette 9 is inserted, the screw 7 is rotated to make the limiting rod 5 and the abutment block 501 retract slightly. The abutment block 501 will then contact the cuvette 9 and hold it in place, preventing the cuvette 9 from falling when the test groove 101 needs to be disassembled after the test is completed, thus improving stability.

[0023] It is worth noting that, such as Figure 2As shown, a locking block 3 is fixedly connected to the bottom horizontal surface of the detection slot 101 of the photometer body 1, and a corresponding locking slot 8 is fixedly connected to the bottom of the detection frame 4. When the detection frame 4 is placed into the detection slot 101, the locking slot 8 is aligned with the locking block 3 before being placed in, which can ensure that the detection frame 4 will not slide left or right, making it convenient for the subsequent insertion of the limiting rod 5 into the limiting slot 2.

[0024] It is worth noting that, such as Figure 2 As shown, a spring 6 is fixedly connected between the limiting rod 5 and the inner wall of the slide 403. One end of the limiting rod 5 located inside the slide 403 contacts the bottom of the screw 7. When the limiting rod 5 is pushed by the screw 7, the spring 6 is in a compressed state. After the screw 7 releases the push on the limiting rod 5, the elastic potential energy of the spring 6 is released, pushing the limiting rod 5 back into the slide 403 and releasing the detection frame 4.

[0025] It should be noted that the light source of the visible light spectrophotometer emits composite white light, which is then dispersed by a monochromator to form monochromatic light of a specific wavelength. This beam passes horizontally through the cuvette 9 containing the sample. The light-absorbing substances in the sample absorb the specific wavelength of light according to the Lambert-Beer law, resulting in a decrease in the intensity of the transmitted light. The detector measures the ratio of the incident light intensity to the transmitted light intensity and converts it into an absorbance value. During the detection process, the reference liquid and the sample liquid are measured alternately through a dual-beam system or a single beam. Finally, the instrument automatically calculates and displays the sample concentration or purity data. This utility model mainly focuses on the fixation of the cuvette 9 and the disassembly and assembly of the detection frame 4. It does not modify the light source emitting component or other internal equipment. These are not the technical solutions that need to be protected in this utility model. Therefore, its specific equipment structure and working principle will not be described in detail.

[0026] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0027] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A visible light spectrophotometer, comprising a spectrophotometer body (1) and a detection frame (4), characterized in that: The inner side of the testing frame (4) is provided with a sliding groove (403). The two ends of the sliding groove (403) are respectively located on the left and right sidewall surfaces of the testing frame (4). Two limiting rods (5) are slidably connected to the inner side of the sliding groove (403). A screw (7) is threadedly connected to the center of the top of the testing frame (4). The bottom end of the screw (7) is located between the two limiting rods (5).

2. The visible light spectrophotometer according to claim 1, characterized in that: The top of the testing frame (4) is provided with four positioning slots (401), a cuvette (9) is inserted into the inner side of the positioning slot (401), and a telescopic slot (402) is provided on the inner side wall of the positioning slot (401), which is connected to the sliding groove (403).

3. A visible light spectrophotometer according to claim 1, characterized in that: The outer wall of the limiting rod (5) is fixedly connected to a stop block (501), which is located inside the telescopic groove (402) and is slidably connected to the telescopic groove (402).

4. A visible light spectrophotometer according to claim 1, characterized in that: Limiting grooves (2) are provided on the left and right inner walls of the detection groove (101) of the photometer body (1), and the limiting grooves (2) and the limiting rod (5) are at the same height.

5. A visible light spectrophotometer according to claim 1, characterized in that: A locking block (3) is fixedly connected to the bottom horizontal surface of the detection slot (101) of the photometer body (1), and a corresponding locking slot (8) is fixedly connected to the bottom of the detection frame (4).

6. A visible light spectrophotometer according to claim 1, characterized in that: A spring (6) is fixedly connected between the limiting rod (5) and the inner wall of the slide (403), and one end of the limiting rod (5) located inside the slide (403) contacts the bottom of the screw (7).

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