A cuvette holder

Abstract

This invention provides a cuvette holder, comprising a base, a first optical fiber assembly, a second optical fiber assembly, a slider, and an elastic guide assembly. The base has an opening at the top, and the first and second optical fiber assemblies are positioned opposite each other on either side of the mounting cavity and are both fixed to the base. Detection light can be transmitted between the first and second optical fiber assemblies. The slider is positioned within the mounting cavity via the elastic guide assembly and can slide within it. The slider has a light-transmitting hole through which the detection light between the first and second optical fiber assemblies can pass. A first clamping part is provided on one side of the slider, and a second clamping part is provided on the side wall of the mounting cavity opposite to the first clamping part, forming a clamping space for the cuvette. This holder is easy to assemble and replace, highly corrosion-resistant, and compatible with various sizes of cuvettes or test tubes.

Description

Technical Field

[0001] This utility model relates to the field of spectral analysis technology, and in particular to a cuvette holder. Background Technology

[0002] A cuvette is an instrument used for spectral analysis, primarily for measuring optical density, determining solution concentration, substance content, and comparing colors. During analysis, the cuvette contains the solution to be analyzed, and a holder is needed to allow light of a specific wavelength to pass through the cuvette for measurement. Existing technology, such as the utility model patent with authorization publication number CN214668525U, discloses a cuvette holder device. This device uses four mounting plates to fix the cuvette inside a holder base. The space enclosed by the four mounting plates can only accommodate one size of cuvette or test tube. For cuvettes of different shapes, the mounting plates need to be replaced to fix the cuvette, resulting in poor compatibility. Furthermore, during assembly and replacement, the four mounting plates need to be repeatedly disassembled and reassembled to install and remove the cuvette, which is inconvenient for frequent testing. In addition, existing holders are mostly made of stainless steel. During actual testing, when the cuvette is placed or removed, the solution inside may spill out and adhere to the holder, easily causing corrosion and affecting its lifespan.

[0003] Therefore, there is an urgent need to provide a new type of cuvette holder. Utility Model Content

[0004] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the prior art, this utility model provides a cuvette holder.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a cuvette holder, including a base, a first optical fiber assembly, a second optical fiber assembly, a slider, and an elastic guide assembly. The base has a mounting cavity with an upper opening. The first and second optical fiber assemblies are arranged opposite each other on both sides of the mounting cavity and are both fixed to the base. Detection light can be transmitted between the first and second optical fiber assemblies. The slider is set in the mounting cavity through the elastic guide assembly and can slide within the mounting cavity. The slider has a light-transmitting hole through which the detection light between the first and second optical fiber assemblies can pass. A first clamping part is provided on one side of the slider, and a second clamping part is provided on the side wall of the mounting cavity opposite to the first clamping part. A clamping space for the cuvette is formed between the first and second clamping parts. The size of the cuvette clamping space can be changed by sliding the slider, thereby adapting to cuvettes or test tubes of different sizes. The clamping force is provided by a spring, ensuring stable clamping and convenient and quick clamping.

[0006] Furthermore, to better accommodate cuvettes of different sizes, the first clamping part is provided with a vertical first V-groove, and the second clamping part is provided with a vertical second V-groove, with the first and second V-grooves facing each other. The cuvette is clamped between the first and second V-grooves. The V-grooves on both sides can be used to clamp and fix cuvettes of different sizes and shapes, including but not limited to circular, elliptical, flat tube, and polygonal tube shapes.

[0007] To facilitate the insertion of the cuvette between the first V-groove and the second V-groove, the slider at the top of the first V-groove is provided with an inclined first guide surface, and the base at the top of the second V-groove is provided with an inclined second guide surface. Guided by the first and second guide surfaces, the cuvette can be quickly inserted between the first and second clamping parts.

[0008] Furthermore, the elastic guide assembly is at least one set, including a guide post and a spring. The guide post passes through the slider and its two ends are respectively connected to the inner wall of the mounting cavity. In order to achieve the connection, a first positioning hole is provided on one side wall of the mounting cavity and a second positioning hole is provided on the other side wall. The two ends of the guide post are fixed in the positioning holes on both sides, and the spring is sleeved on the end of the guide post away from the cuvette.

[0009] Furthermore, the base includes a base plate and a seat body, and the mounting cavity is disposed inside the seat body.

[0010] Furthermore, to facilitate the installation of the optical fiber assembly, the base is also provided with a first optical fiber mounting hole and a second optical fiber mounting hole, which are used to install the first optical fiber assembly and the second optical fiber assembly, respectively.

[0011] Specifically, the first optical fiber assembly includes a first SMA interface, a first lens bracket, and a first lens group. The first lens bracket is installed in a first optical fiber mounting hole and has a through hole inside. The first SMA interface is installed in the through hole at the outer end of the first lens bracket located on the base, and the first lens group is installed in the through hole at the inner end of the first lens bracket located on the base. The second optical fiber assembly includes a second SMA interface, a second lens bracket, and a second lens group. The second lens bracket is installed in a second optical fiber mounting hole and has a through hole inside. The second SMA interface is installed in the through hole at the outer end of the second lens bracket located on the base, and the second lens group is installed in the through hole at the inner end of the second lens bracket located on the base. Both the first SMA interface and the second SMA interface are used to mate with an SMA905 connector. The SMA905 connector contains an optical fiber, and the light source is transmitted through the optical fiber.

[0012] Furthermore, to enhance the corrosion resistance of the bracket, both the base and the slider are made of PTFE material. PTFE material has very high corrosion resistance, so even if the solution is spilled during use, it will not affect the bracket.

[0013] The beneficial effects of this utility model are as follows: The cuvette holder provided by this utility model can adjust the size of the cuvette clamping space through the cooperation of the slider and the elastic guide component, and the V-groove design of the clamping part can be used to accommodate cuvettes or test tubes of different specifications; the clamping force is provided by the spring, which ensures the stability of the clamping while making the assembly and replacement faster and easier; the use of PTFE material improves the corrosion resistance of the holder. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a three-dimensional structural diagram of the cuvette holder according to Embodiment 1 of this utility model.

[0016] Figure 2 yes Figure 1 Top view.

[0017] Figure 3 yes Figure 2 A magnified view of a portion of the image.

[0018] Figure 4 yes Figure 2 A schematic diagram of the cross-sectional structure of AA.

[0019] Figure 5 This is a structural schematic diagram of the base in Embodiment 1.

[0020] Figure 6 This is a schematic diagram of the slider in Embodiment 1.

[0021] Figure 7 This is a three-dimensional structural diagram of the cuvette holder in Example 2.

[0022] Figure 8 This is a schematic diagram of the base structure in Embodiment 2.

[0023] Figure 9 This is a schematic diagram of the slider in Embodiment 2.

[0024] In the diagram: 1. Base; 1.1. Base plate; 1.2. Seat body; 1.3. Mounting cavity; 1.4. First fiber optic mounting hole; 1.5. Second fiber optic mounting hole; 1.6. Second guide surface; 1.7. Second V-groove; 1.8. Second positioning hole; 1.9. First positioning hole; 2. First SMA interface; 3. First lens bracket; 4. Second SMA interface; 5. Second lens bracket; 6. Cuvette; 7. Slider; 7.1. First guide surface; 7.2. First V-groove; 7.3. Guide hole; 7.4. Light transmission hole; 8. Spring; 9. Guide post; 10. First lens group; 11. Second lens group. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention. Therefore, they only show the components, orientations, and references (e.g., up, down, left, right, etc.) relevant to the present invention and are intended only to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0026] Example 1:

[0027] like Figures 1-6 As shown, this utility model discloses a cuvette 6 support, comprising a base 1, a first optical fiber assembly, a second optical fiber assembly, a slider 7, and an elastic guide assembly. The base 1 includes a base plate 1.1 and a seat body 1.2, which are preferably integrally formed to simplify the mechanism. To facilitate connection and fixation of the support to other mechanisms, connection holes are provided at the four corners of the base plate 1.1. The mounting cavity 1.3 is located inside the seat body 1.2 and is a rectangular cavity with an open top. To improve the corrosion resistance of the support, both the base 1 and the slider 7 are made of PTFE material. The first and second optical fiber assemblies are arranged opposite each other on both sides of the mounting cavity 1.3 and are both fixed to the base 1. The first and second optical fiber assemblies can transmit detection light between them. The slider 7 is positioned within the mounting cavity 1.3 via the elastic guide assembly and can slide within the mounting cavity 1.3. Figure 3As shown, the elastic guiding assembly consists of at least one set, including a guide post 9 and a spring 8. The guide post 9 passes through the slider 7, and its two ends are connected to the inner wall of the mounting cavity 1.3. To achieve this connection, a first positioning hole 1.9 is provided on one side wall of the mounting cavity 1.3, and a second positioning hole 1.8 is provided on the other side wall. The two ends of the guide post 9 are fixed in the positioning holes on both sides. The spring 8 is sleeved on the end of the guide post 9 away from the cuvette 6. In this embodiment, there are four sets of elastic guiding assemblies, distributed around the light-transmitting hole 7.4. Therefore, there are four first positioning holes 1.9 and four second positioning holes 1.8. The guide post 9 guides the slider 7 to slide and, in conjunction with the spring 8, provides clamping force. The four sets of elastic guiding assemblies are evenly distributed on the outer periphery, providing a balanced clamping force. A first clamping part is provided on one side of the slider 7, and a second clamping part is provided on the side wall of the mounting cavity 1.3 opposite to the first clamping part. The first clamping part and the second clamping part form a clamping space for the cuvette 6. The size of the clamping space for the cuvette 6 can be changed by sliding the slider 7, thus adapting it to different sizes of cuvettes 6 or test tubes; for example... Figure 6 As shown, in order to detect the passage of the light source, the slider 7 is also provided with a light-transmitting hole 7.4; in order to match the elastic guide assembly, the slider 7 around the light-transmitting hole 7.4 is provided with four guide holes 7.3. The light-transmitting hole 7.4 can pass through the detection light between the first optical fiber assembly and the second optical fiber assembly; the guide holes 7.3 are used to pass through the guide post 9, and the guide post 9 can slide within the guide holes 7.3.

[0028] like Figure 5 and Figure 6 As shown, to better accommodate cuvettes 6 of different sizes, the first clamping part has a vertical first V-groove 7.2, and the second clamping part has a vertical second V-groove 1.7, with the first V-groove 7.2 and the second V-groove 1.7 facing each other. The cuvette 6 is clamped between the first V-groove 7.2 and the second V-groove 1.7. The V-grooves on both sides allow for the clamping and fixing of cuvettes 6 of different sizes and shapes, including but not limited to circular, elliptical, flat tube, and polygonal tube shapes. To facilitate the insertion of the cuvette 6 between the first V-groove 7.2 and the second V-groove 1.7, the slider 7 at the top of the first V-groove 7.2 has an inclined first guide surface 7.1, and the base 1.2 at the top of the second V-groove 1.7 has an inclined second guide surface 1.6. Guided by the first guide surface 7.1 and the second guide surface 1.6, the cuvette 6 can be quickly inserted between the first clamping part and the second clamping part.

[0029] like Figure 4 and Figure 5As shown, to facilitate the installation of fiber optic components, the base 1.2 is also provided with a first fiber optic mounting hole 1.4 and a second fiber optic mounting hole 1.5, which are used to install the first fiber optic component and the second fiber optic component, respectively. The first fiber optic component includes a first SMA interface 2, a first lens bracket 3, and a first lens group 10. The first lens bracket 3 is installed in the first fiber optic mounting hole 1.4, and the first lens bracket 3 has a through hole inside. The first SMA interface 2 is installed in the through hole at the outer end of the first lens bracket 3 located on the base 1, and the first lens group 10 is installed in the through hole at the inner end of the first lens bracket 3 located on the base 1. The second fiber optic component includes a second SMA interface 4, a second lens bracket 5, and a second lens group 11. The second lens bracket 5 is installed in the second fiber optic mounting hole 1.5, and the second lens bracket 5 has a through hole inside. The second SMA interface 4 is installed in the through hole at the outer end of the second lens bracket 5 located on the base 1, and the second lens group 11 is installed in the through hole at the inner end of the second lens bracket 5 located on the base 1. Both the first SMA interface 2 and the second SMA interface 4 are used to mate with the SMA905 connector, which contains an optical fiber through which the light source is transmitted. In this embodiment, the first lens bracket 3 and the first optical fiber mounting hole 1.4, and the second lens bracket 5 and the second optical fiber mounting hole 1.5 are all connected by threaded connections.

[0030] Example 2:

[0031] like Figures 7-9 As shown, the difference between this embodiment and Embodiment 1 lies in the number of elastic guide components. This embodiment has two sets of elastic guide components, which are respectively arranged on both sides of the light-transmitting hole 7.4 along the movement direction of the slider 7. Reducing the number of elastic guide components can reduce the frictional resistance during movement, thereby making the movement of the slider 7 smoother. Since there are two sets of elastic guide components, there are two corresponding first positioning holes 1.9 and second positioning holes 1.8 on the base 1; and there are also two guide holes 7.3 on the slider 7.

[0032] Working principle:

[0033] When testing is required, first pour the solution to be tested into cuvette 6. Then, push slider 7 in the opposite direction of spring 8 to insert cuvette 6 between the first V-groove 7.2 and the second V-groove 1.7. Release slider 7 and then clamp cuvette 6 in place by spring 8.

[0034] The light source is connected via an optical fiber. The light source used for detection is connected to the optical fiber at one end, passes through a lens group on one side, and then shines onto cuvette 6. After passing through the solution inside cuvette 6, some of the light is absorbed inside the light source, while some of the light passes through the other end of cuvette 6. After being adjusted by the lens group at the other end, the light is received by the optical fiber at the other end and transmitted to the spectrometer. The composition and characteristics of the liquid inside cuvette 6 are analyzed and determined.

[0035] After the test is completed, simply pull the cuvette 6 out from between the first V-groove 7.2 and the second V-groove 1.7 of the holder. No disassembly of any parts is required. When replacing the cuvette 6 with a new solution, simply insert it directly without disassembling any parts. The operation is simple, quick, easy to assemble and easy to replace.

[0036] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A cuvette holder characterized in that: The device includes a base, a first optical fiber assembly, a second optical fiber assembly, a slider, and an elastic guide assembly. The base has a mounting cavity with an upper opening. The first and second optical fiber assemblies are arranged opposite each other on both sides of the mounting cavity and are fixed to the base. Detection light can be transmitted between the first and second optical fiber assemblies. The slider is set in the mounting cavity through the elastic guide assembly and can slide within the cavity. The slider has a light-transmitting hole through which the detection light between the first and second optical fiber assemblies can pass. A first clamping part is provided on one side of the slider, and a second clamping part is provided on the side wall of the mounting cavity opposite to the first clamping part. The first and second clamping parts form a clamping space for the cuvette.

2. The cuvette holder of claim 1, wherein: The first clamping part is provided with a vertical first V-shaped groove, and the second clamping part is provided with a vertical second V-shaped groove, and the first V-shaped groove and the second V-shaped groove are arranged opposite each other, and the cuvette is clamped between the first V-shaped groove and the second V-shaped groove.

3. The cuvette holder of claim 2, wherein: The slider at the top of the first V-groove is provided with an inclined first guide surface, and the base at the top of the second V-groove is provided with an inclined second guide surface.

4. The cuvette holder of claim 1, wherein: The elastic guide assembly is at least one set, including a guide post and a spring. The guide post passes through the slider and its two ends are respectively connected to the inner wall of the mounting cavity. The spring is sleeved on the end of the guide post away from the cuvette.

5. The cuvette holder of claim 1, wherein: The base includes a base plate and a seat body, and the mounting cavity is located inside the seat body.

6. The cuvette holder of claim 5, wherein: The base is also provided with a first optical fiber mounting hole and a second optical fiber mounting hole, which are used to install the first optical fiber assembly and the second optical fiber assembly, respectively.

7. The cuvette holder of claim 6, wherein: The first optical fiber assembly includes a first SMA interface, a first lens bracket, and a first lens group. The first lens bracket is installed in a first optical fiber mounting hole and has a through hole inside. The first SMA interface is installed in the through hole at the outer end of the first lens bracket located on the base, and the first lens group is installed in the through hole at the inner end of the first lens bracket located on the base. The first SMA interface is used to mate with an SMA905 connector. The second optical fiber assembly includes a second SMA interface, a second lens bracket, and a second lens group. The second lens bracket is installed in a second optical fiber mounting hole and has a through hole inside. The second SMA interface is installed in the through hole at the outer end of the second lens bracket located on the base, and the second lens group is installed in the through hole at the inner end of the second lens bracket located on the base. The second SMA interface is also used to mate with an SMA905 connector.

8. The cuvette holder of claim 1, wherein: The base is made of PTFE material.

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