Spectrophotometer with positioning function

Abstract

The utility model relates to the technical field of photometers, and discloses a spectrophotometer with a positioning function, which comprises a photometer body, the surface of the photometer body is hinged with a camera obscura cover, according to the spectrophotometer with the positioning function, the right side of a chute is an inclined surface, so that an elastic sheet I is forced to be pressed downwards to push a sliding block to move, and the elastic sheet I is pressed downwards to push the sliding block to move; when the sliding block slides towards the left side along the sliding groove, a limiting block penetrates through a notch to enter a limiting cavity, a second spring pushes a second elastic piece, the second elastic piece tensions a vertical rod, the vertical rod tensions the limiting block, the limiting block is kept in the limiting cavity all the time, and the sliding block is prevented from loosening; the tubular cuvettes can be stably fixed to the inner side of the circular plate through the four sets of arc-shaped positioning blocks, the two sets of tubular cuvettes can be positioned through the two sets of positioning mechanisms, fixing is firm, and meanwhile comparison is more convenient when light rays penetrate through the cuvettes.

Description

Technical Field

[0001] The utility model relates to the technical field of photometers, in particular to a spectrophotometer with a positioning function. Background Art

[0002] A spectrophotometer is an instrument used to measure the intensity or wavelength of light. It usually consists of a light source, a sample chamber, a grating or prism, and a light scattering detector. It works by breaking light into its component wavelengths and then measuring the intensity of each wavelength. This instrument is widely used in chemistry, biology, environmental science, and other fields to analyze chemicals in a sample or understand its optical properties.

[0003] When using a spectrophotometer, the solution needs to be poured into a cuvette, and then the cuvette is placed inside the spectrophotometer for detection. However, most spectrophotometers use a circular groove inside for inserting the cuvette, but using cuvettes of different models is not only inconvenient to position, but also easy to tip over. Utility Model Content

[0004] The purpose of the utility model is to provide a spectrophotometer with a positioning function to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a spectrophotometer with a positioning function, comprising a photometer body, a dark box cover is hinged on the surface of the photometer body, and a positioning mechanism is arranged inside the photometer body, and the positioning mechanism comprises:

[0006] A lifting plate, the lifting plate is slidably connected to the inner wall of the photometer body, a circular plate is penetrated and fixedly connected to the surface of the lifting plate, when in use, the solution to be measured is poured into the tubular cuvette, the cuvette is inserted into the inner side of the circular plate, the top surface of the circular plate is penetrated by an insertion rod, and the top surface of the insertion rod is fixedly connected to a pressing plate;

[0007] A slide groove, wherein the slide groove is opened on the top surface of the circular plate, a slider is slidably connected to the inner side of the slide groove, and an arc-shaped positioning block is fixedly connected to one end of the slider close to the center of the circular plate. Since the right side of the slide groove is an inclined surface, the elastic sheet 1 is forced to be pressed downward and then push the slider to move, and an elastic sheet 1 is fixedly connected to one end of the slider away from the arc-shaped positioning block. When the pressing plate is pressed downward, the pressing plate will push the insertion rod to be inserted into the circular plate, and the edge of the pressing plate will press the elastic sheet 1.

[0008] Preferably, a limiting cavity is provided on the bottom surface of the slider, and when the slider slides to the left along the slide groove, the limiting block will pass through the notch and enter the limiting cavity. A notch is provided at the bottom of one end of the limiting cavity close to the arc-shaped positioning block.

[0009] Preferably, a support rod penetrates and is fixedly connected to the right side of the slider, and the support rod is slidably connected to the slider.

[0010] Preferably, a groove is formed on the bottom surface of the circular plate, and a second elastic sheet is fixedly connected to the inner side of the groove.

[0011] Preferably, a spring 1 is fixedly connected to the right side of the sliding block, a spring 2 is fixedly connected to the top surface of the elastic sheet 2, and the top surface of the spring 2 is fixedly connected to the inner side of the groove.

[0012] Preferably, the top surface of the elastic sheet 2 is fixedly connected with a vertical rod, and the top surface of the vertical rod is fixedly connected with a limiting block. When the slider slides to the left along the slide groove, the spring 2 pushes the elastic sheet 2, so that the elastic sheet 2 tightens the vertical rod.

[0013] Preferably, the initial position of the limit block is located in a notch formed at the bottom end of the limit cavity, and when the slider slides to the left along the slide groove, the limit block passes through the notch and enters the limit cavity.

[0014] Compared with the prior art, the utility model provides a spectrophotometer with a positioning function, which has the following beneficial effects:

[0015] The spectrophotometer with a positioning function has an inclined surface on the right side of the slide slot, which forces the elastic sheet 1 to be pressed downward to push the slider to move, and the slider pushes the arc-shaped positioning block to position the tubular cuvette. When the slider slides to the left along the slide slot, the limit block passes through the notch and enters the limit cavity, and the spring 2 pushes the elastic sheet 2 to make the elastic sheet 2 tighten the vertical rod, forcing the vertical rod to tighten the limit block, so that the limit block is always kept in the limit cavity to prevent the slider from loosening. The tubular cuvette can be stably fixed on the inner side of the circular plate through four groups of arc-shaped positioning blocks, and the two groups of positioning mechanisms can position the two groups of tubular cuvettes, which are firmly fixed and more convenient for comparison when light passes through. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the photometer body of the utility model;

[0018] Figure 3 This is a schematic cross-sectional view of the positioning mechanism of the utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the slider of the utility model.

[0020] In the figure: 1. photometer body; 2. positioning mechanism; 21. lifting plate; 22. round plate; 23. plug rod; 24. pressing plate; 25. slide groove; 26. slider; 27. elastic sheet 1; 28. arc-shaped positioning block; 29. ​​limiting cavity; 210. notch; 211. support rod; 212. spring 1; 213. vertical rod; 214. limiting block; 215. spring 2; 216. groove; 217. elastic sheet 2; 3. dark box cover. DETAILED DESCRIPTION

[0021] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: a spectrophotometer with a positioning function, including a photometer body 1, a dark box cover 3 is hinged on the surface of the photometer body 1, and a positioning mechanism 2 is arranged inside the photometer body 1, and the positioning mechanism 2 includes: a lifting plate 21, a circular plate 22, an insertion rod 23, a pressing plate 24, a slide groove 25, a slider 26, an elastic sheet 27, an arc-shaped positioning block 28, a limiting cavity 29, a notch 210, a support rod 211, a spring 212, a vertical rod 213, a limiting block 214, a spring 215, a groove 216, and an elastic sheet 217.

[0022] The lifting plate 21 is slidably connected to the inner wall of the photometer body 1, and a circular plate 22 is penetrated and fixedly connected to the surface of the lifting plate 21. When in use, the solution to be measured is poured into the tubular cuvette, and the cuvette is inserted into the inner side of the circular plate 22. The top surface of the circular plate 22 is penetrated by an insertion rod 23, and the top surface of the insertion rod 23 is fixedly connected to a pressing plate 24. A chute 25 is provided on the top surface of the circular plate 22, and a slider 26 is slidably connected to the inner side of the chute 25. The slider 26 is close to the circular plate 22. An arc-shaped positioning block 28 is fixedly connected to one end of the center. Since the right side of the slide groove 25 is an inclined surface, the elastic sheet 27 is forced to be pressed downward to push the slider 26 to move, and the slider 26 will push the arc-shaped positioning block 28 to position the tubular cuvette. The end of the slider 26 away from the arc-shaped positioning block 28 is fixedly connected to an elastic sheet 27, which presses the pressing plate 24 downward. The pressing plate 24 will push the insertion rod 23 to insert into the circular plate 22, and the edge of the pressing plate 24 will press the elastic sheet 27. The bottom surface of the slider 26 is provided with a limit cavity 29. When the slider 26 slides to the left along the slide groove 25, the limit block 214 will pass through the notch 210 and enter the limit cavity 29, and the second spring 215 will push the second elastic piece 217, so that the second elastic piece 217 tightens the vertical rod 213, forcing the vertical rod 213 to tighten the limit block 214, so that the limit block 214 is always kept in the limit cavity 29. The limit cavity 29 is provided with a notch 210 at the bottom of one end near the arc-shaped positioning block 28. The right side of the slider 26 is penetrated and fixedly connected with a support rod 211, and the support rod 211 is slidably connected to the slider 26. The bottom surface of the circular plate 22 is provided with a groove 216, and the inner side of the groove 216 is fixedly connected with the second elastic piece 217. The right side of the slider 26 is fixedly connected with the first spring 212, and the top surface of the second elastic piece 217 is fixedly connected with the second spring 215, and the top surface of the second spring 215 is fixedly connected with the inner side of the groove 216. The top surface of the second elastic piece 217 is fixedly connected with the vertical rod 213, and the top surface of the vertical rod 213 is fixedly connected with the limiting block 214. When the slider 26 slides to the left along the slide groove 25, the limiting block 214 passes through the notch 210 and enters the limiting cavity 29, and the second spring 215 pushes the second elastic piece 217, so that the second elastic piece 217 tightens the vertical rod 213. The initial position of the limiting block 214 is located in the notch 210 opened at the bottom end of the limiting cavity 29.

[0023] Based on the above embodiment, when in use, the solution to be measured is poured into the tubular cuvette, the cuvette is inserted into the inner side of the circular plate 22, and then the pressing plate 24 is pressed downward, the pressing plate 24 will push the insertion rod 23 to be inserted into the circular plate 22, and the edge of the pressing plate 24 will press the elastic sheet 1 27. Since the right side of the slide groove 25 is an inclined surface, the elastic sheet 1 27 is forced to be pressed downward and then push the slider 26 to move, and the slider 26 will push the arc-shaped positioning block 28 to position the tubular cuvette, and when the slider 26 slides to the left along the slide groove 25, it will make The limit block 214 passes through the notch 210 and enters the limit cavity 29, and the spring 215 pushes the elastic sheet 217, so that the elastic sheet 217 tightens the vertical rod 213, forcing the vertical rod 213 to tighten the limit block 214, so that the limit block 214 is always kept in the limit cavity 29 to prevent the slider 26 from loosening. The four groups of arc-shaped positioning blocks 28 can make the tubular cuvette be stably fixed on the inner side of the circular plate 22, and the two groups of positioning mechanisms 2 can position the two groups of tubular cuvettes, which are firmly fixed and more convenient for comparison when light passes through.

[0024] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A spectrophotometer with a positioning function, comprising a photometer body (1), a dark box cover (3) being hinged on the surface of the photometer body (1), characterized in that: A positioning mechanism (2) is provided inside the photometer body (1), and the positioning mechanism (2) comprises: A lifting plate (21), the lifting plate (21) being slidably connected to the inner wall of the photometer body (1), a circular plate (22) passing through and fixedly connected to the surface of the lifting plate (21), an insertion rod (23) passing through the top surface of the circular plate (22), and a pressing plate (24) being fixedly connected to the top surface of the insertion rod (23); A slide groove (25), wherein the slide groove (25) is provided on the top surface of the circular plate (22), a slider (26) is slidably connected to the inner side of the slide groove (25), an end of the slider (26) close to the center of the circular plate (22) is fixedly connected to an arc-shaped positioning block (28), and an end of the slider (26) away from the arc-shaped positioning block (28) is fixedly connected to an elastic sheet (27).

2. The spectrophotometer with positioning function according to claim 1, characterized in that: The bottom surface of the sliding block (26) is provided with a limiting cavity (29), and the bottom of one end of the limiting cavity (29) close to the arc-shaped positioning block (28) is provided with a notch (210).

3. The spectrophotometer with positioning function according to claim 1, characterized in that: A support rod (211) passes through and is fixedly connected to the right side of the slider (26), and the support rod (211) is slidably connected to the slider (26).

4. The spectrophotometer with positioning function according to claim 1, characterized in that: The bottom surface of the circular plate (22) is provided with a groove (216), and the inner side of the groove (216) is fixedly connected with a second elastic sheet (217).

5. The spectrophotometer with positioning function according to claim 4, characterized in that: The right side of the slider (26) is fixedly connected to a spring 1 (212), the top surface of the elastic sheet 2 (217) is fixedly connected to a spring 2 (215), and the top surface of the spring 2 (215) is fixedly connected to the inner side of the groove (216).

6. The spectrophotometer with positioning function according to claim 4, characterized in that: The top surface of the second elastic piece (217) is fixedly connected to a vertical rod (213), and the top surface of the vertical rod (213) is fixedly connected to a limiting block (214).

7. The spectrophotometer with positioning function according to claim 6, characterized in that: The initial position of the limiting block (214) is located in a notch (210) formed at the bottom end of the limiting cavity (29).

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