Ultraviolet visible light photometer adaptable to different cuvettes

Abstract

The utility model discloses an ultraviolet and visible light photometer adaptive to different cuvettes. The ultraviolet and visible light photometer is provided with an inserting seat and a plurality of cuvette mounting units, the cuvette mounting unit comprises a bottom slot formed in the inserting seat, the side wall of the bottom slot is step-shaped, and the length and the width of the bottom slot are gradually increased from bottom to top; the bearing bottom can be adjusted up and down relative to the inserting seat; the reset structure is used for driving the bearing bottom to reset upwards; the side limiting assembly comprises two side limiting structures which are oppositely arranged, and the side limiting structures are adjustable in the horizontal direction relative to the inserting base; the linkage structure is connected with the bearing bottom and the side limiting structure; when the bearing bottom moves downwards, the linkage structure drives the two side limiting structures to get close to each other. The photometer can automatically adapt to cuvettes with different specifications and well fix the cuvettes with different specifications, so that the stability of the cuvettes during detection can be effectively ensured, and the accuracy of a detection analysis result is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of photometer, especially ultraviolet visible photometer of different cuvette can be adapted. BACKGROUND

[0002] The spectrophotometer is a kind of analytical instrument widely used at present, mainly by light source, monochromator, sample chamber, detector, signal processor and display and storage system composition.The determination principle of spectrophotometer is to use the selective absorption characteristics of matter to light, with relatively pure monochromatic light as incident light, the absorption of matter to light is determined, so as to determine the content of substance in solution, with the advantages of high sensitivity, wide measurement range.

[0003] The spectrophotometer in prior art has certain requirements to the size of cuvette, otherwise the cuvette cannot be fixed on the object holder, the stability of cuvette is affected when detecting in sample chamber, and further the detection analysis result will be affected. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problems that provide ultraviolet visible photometer of different cuvette can be adapted to solve one or more technical problems existing in prior art, at least provide a beneficial choice or create conditions.

[0005] The utility model solves the technical problems of the solution scheme:

[0006] Ultraviolet visible photometer of different cuvette can be adapted, is equipped with insert seat and a plurality of cuvette installation units;The cuvette installation unit includes:

[0007] Bottom slot, the bottom slot is arranged in the insert seat, the sidewall of the bottom slot is in the form of echelon, the length and width of the bottom slot gradually increase from bottom to top;

[0008] Support bottom, the support bottom is adjustable up and down relative to the insert seat;

[0009] Reset structure, the reset structure is used to drive the support bottom to reset upwards;

[0010] Side limiting assembly, the side limiting assembly includes two oppositely arranged side limiting structures, the side limiting structure is arranged above the bottom slot, and the side limiting structure is adjustable along the horizontal direction relative to the insert seat;

[0011] Linkage structure, the linkage structure is connected with the support bottom and the side limiting structure;When the support bottom moves downward, the linkage structure drives two side limiting structures to approach each other.

[0012] As a further improvement to the above technical solution, the linkage structure includes:

[0013] The first rack moves up and down with the support bottom;

[0014] A gear component, which is rotatably connected to the insertion seat and meshes with the first rack;

[0015] The second rack is provided in two, and the two second racks are symmetrical about the center of the gear component. The second racks mesh with the gear component. The two second racks are respectively fixed relative to the two side limiting structures.

[0016] When the first rack moves downward, it drives the two second racks to move closer to each other through the gear component.

[0017] As a further improvement to the above technical solution, the first rack is disposed below the bottom of the support.

[0018] As a further improvement to the above technical solution, the first rack is a bendable and deformable component.

[0019] As a further improvement to the above technical solution, it also includes a guide channel group, which includes a first straight guide channel, a first curved channel, and a second straight guide channel arranged and connected in sequence; the first straight guide channel extends vertically, and the second straight guide channel extends horizontally.

[0020] The first rack passes through the first straight guide channel, the first curved channel, and the second straight guide channel in sequence, and the first rack meshes with the first gear in the first curved channel.

[0021] As a further improvement to the above technical solution, the gear component includes a first gear and a second gear fixed to each other, the diameter of the first gear is smaller than the diameter of the second gear, the first gear meshes with the first rack, and the second gear meshes with the second rack.

[0022] As a further improvement to the above technical solution, the sidewall of the bottom slot is provided with a first soft layer, which is used to contact the cuvette.

[0023] As a further improvement to the above technical solution, a second soft layer is fixed to one end of each of the two side limiting structures facing each other, and the second soft layer is used to contact the cuvette.

[0024] As a further improvement to the above technical solution, the bottom of the support is provided with a third soft layer, which is used to support the bottom of the cuvette.

[0025] As a further improvement to the above technical solution, multiple cuvette mounting units are provided, and the multiple cuvette mounting units are arranged at intervals along the front-back direction.

[0026] The beneficial effects of this invention are as follows: When the operator inserts the cuvette into the holder, the bottom of the cuvette will first contact the bottom of the support. Because the sidewalls of the bottom slot are stepped, the slot can accommodate cuvettes of different sizes. After the cuvette is inserted into the appropriate position, the sidewall of the bottom slot will abut against the sidewall of the cuvette, thus limiting the lower end of the cuvette. Through a linkage structure, as the bottom of the support descends, the linkage structure drives the two side limiting structures to move closer together, thereby limiting other positions of the cuvette and completing the fixation of the cuvette. The photometer of this solution can automatically adapt to cuvettes of different sizes and fix them well, thus effectively ensuring the stability of the cuvette during testing and ensuring the accuracy of the test analysis results.

[0027] After the cuvette is removed, the reset structure will drive the bottom support and side limiting structure to reset.

[0028] This invention relates to the field of photometer technology. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0031] Figure 2 This is a cross-sectional structural diagram of the main structures such as the insertion base in an embodiment of this utility model.

[0032] In the figure, 100 is the photometer body; 200 is the insertion base; 210 is the guide channel assembly; 211 is the second straight guide channel; 212 is the first curved channel; 213 is the first straight guide channel; 310 is the bottom slot; 320 is the bottom support; 330 is the reset structure; 340 is the side limiting assembly; 341 is the side limiting structure; 350 is the linkage structure; 351 is the first rack; 352 is the second rack; 353 is the gear component; 354 ​​is the second gear; and 355 is the first gear. Detailed Implementation

[0033] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this invention can be combined interactively without contradicting each other.

[0034] Reference Figure 1 and Figure 2 It is an ultraviolet-visible photometer that can be adapted to different cuvettes, including the photometer body 100, the insertion base 200 and the cuvette mounting unit.

[0035] The photometer body 100 is provided with a colorimetric chamber, in which the insertion base 200 and the cuvette mounting unit are both disposed. A cover is provided at the opening of the colorimetric chamber, and the cover is hinged to the photometer body 100.

[0036] Specifically, in this embodiment, the insertion base 200 is slidably connected to the photometer body 100 in the front-to-back direction to achieve adjustable position of the insertion base 200. The insertion base 200 is driven by a linear drive structure, and those skilled in the art can select the specific model of the linear drive structure according to actual needs. The insertion base 200 has a light-transmitting hole for light to pass through. The light-transmitting hole extends through the insertion base 200 in the left-to-right direction.

[0037] Specifically, in this embodiment, the number of cuvette mounting units is set to multiple, and the multiple cuvette units are arranged in the front-to-back direction.

[0038] The cuvette mounting unit includes: a bottom slot 310, a bottom support 320, a reset structure 330, a side limiting component 340, and a linkage structure 350.

[0039] The bottom slot 310 is provided in the insertion base 200. The bottom slot 310 includes multiple cuvette slots. The cuvette slots are set as square slot structures. The multiple cuvette slots are arranged in the vertical direction. From bottom to top, the length and width of the cuvette slots gradually increase to accommodate cuvettes of different sizes, so that the side wall of the bottom slot 310 has a stepped structure.

[0040] When the cuvette is inserted, it will eventually be inserted into the cuvette slot with the same length and width as the cuvette. The lower end of the cuvette is restricted by the cuvette slot, and the bottom slot 310 can be used to initially fix the cuvette.

[0041] Specifically, in this embodiment, a first soft layer (not shown in the figure) is fixedly provided on the side wall of the bottom slot 310. By providing the first soft layer, the lower end of the cuvette can be prevented from colliding with the relatively hard insertion base 200, so as to protect the lower end of the cuvette.

[0042] The support base 320 is slidably connected to the insertion base 200 in the vertical direction. The support base 320 is used to support the bottom of the cuvette. The support base 320 has a cross-shaped structure.

[0043] Specifically, in this embodiment, the support bottom 320 is provided with a third soft layer (not shown in the figure), and the third soft layer is fixedly connected to the support bottom 320. By providing the third soft layer, a buffering effect can be achieved, which can prevent the cuvette from colliding with the support bottom 320 and breaking due to excessive speed when the operator places it, and prevent the test liquid from flowing into the photometer, thereby protecting the cuvette and the photometer.

[0044] The reset structure 330 is disposed between the support bottom 320 and the insertion seat 200. Specifically, in this embodiment, the reset structure 330 is configured as a spring. The upper end of the reset structure 330 abuts against the support bottom 320 and the lower end abuts against the insertion seat 200. When the operator places the cuvette, the support bottom 320 moves downward and the reset structure 330 is compressed. The reset structure 330 generates an upward elastic force on the support bottom 320. When the cuvette is removed, the reset structure 330 drives the support bottom 320 to move upward, thereby resetting the support bottom 320.

[0045] The side limiting assembly 340 is disposed above the bottom slot 310. The side limiting assembly 340 includes two side limiting structures 341, which are slidably connected to the insertion base 200 in the left-right direction. The two side limiting structures 341 are arranged opposite to each other. The side limiting structures 341 are used to limit the upper end of the cuvette, and together with the bottom slot 310, they complete the fixation of the cuvette.

[0046] Specifically, in this embodiment, each of the two side limiting structures 341 has a second soft layer (not shown in the figure) fixed to its opposite end face. The second soft layer is used to contact the cuvette. By setting the second soft layer, the side wall of the cuvette can be prevented from directly contacting the relatively hard side limiting structure 341, thereby preventing scratches or damage to the cuvette.

[0047] The linkage structure 350 connects the side limiting structure 341 and the supporting bottom 320, so that the side limiting structure 341 and the supporting bottom 320 are linked. Specifically, in this embodiment, the linkage structure 350 includes: a first rack 351, a gear component 353, and a second rack 352.

[0048] Specifically, in this embodiment, the first rack 351 is disposed below the supporting bottom 320.

[0049] Specifically, in this embodiment, the first rack 351 is configured as a flexible component, and the upper end of the first rack 351 is fixedly connected to the support bottom 320. By configuring the first rack 351 as a flexible component, the first rack 351 can be bent to a horizontal position at its lower end, so that when the first rack 351 moves downward with the support bottom 320, the overall height of the linkage structure 350 can be reduced, thereby reducing the overall height of the photometer.

[0050] The insertion base 200 has a guide channel group 210, which includes a second straight guide channel 211, a first curved channel 212, and a first straight guide channel 213 arranged sequentially. The second straight guide channel 211, the first curved channel 212, and the first straight guide channel 213 are connected in sequence. The first straight guide channel 213 extends vertically, and the second straight guide channel 211 extends horizontally. The meshing point between the first rack 351 and the gear component 353 is located in the first curved channel 212. The first rack 351 enters from the first straight guide track and finally exits from the second straight guide channel 211.

[0051] By guiding the first rack 351 through the guide channel group 210, the situation where the first rack 351 cannot maintain meshing with the gear component 353 when it is deformed can be avoided, thereby ensuring the normal operation of the linkage structure 350.

[0052] Two second racks 352 are provided, and the two second racks 352 are fixedly connected to two side limiting structures 341 by vertically arranged connecting rods, thereby realizing the synchronous movement of the second racks 352 and the side limiting structures 341. The second racks 352 extend horizontally, and the two second racks 352 are symmetrically arranged about the center of the gear component 353, and the second racks 352 mesh with the gear component 353.

[0053] The two second racks 352 are arranged symmetrically about the center of the gear component 353, so that when the gear component 353 rotates, the two second racks 352 will move in opposite directions, thereby causing the two side limiting structures 341 to move closer or further apart. Furthermore, since both the first rack 351 and the second rack 352 mesh with the gear component 353, the gear component 353 can achieve the effect that the first rack 351 moves up and down, causing the second rack 352 to move left and right, thus creating a linkage between the support bottom 320 and the side limiting structures 341. During the process of inserting the cuvette into the insertion base 200, the support bottom 320 moves downwards, and the two side limiting structures 341 move closer together, thereby fixing the cuvette.

[0054] The gear component 353 is rotatably connected to the insertion base 200. Specifically, in this embodiment, the gear component 353 includes a second gear 354 and a first gear 355, which are fixedly connected so that they can rotate synchronously. The diameter of the first gear 355 is smaller than that of the second gear 354. The first gear 355 meshes with the first rack 351, and the second gear 354 meshes with the second rack 352. By meshing the smaller first gear 355 with the first rack 351 and the larger second gear 354 with the second rack 352, an acceleration effect can be achieved. The distance traveled by the second rack 352 is longer than that of the first rack 351, thereby reducing the overall height of the bottom slot 310.

[0055] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A UV-Vis spectrophotometer adaptable to different cuvettes, characterized in that: The device includes a placement base and several cuvette mounting units. Each cuvette mounting unit comprises: a bottom slot disposed on the placement base, the bottom slot having a stepped sidewall, and the length and width of the bottom slot gradually increasing from bottom to top; a supporting bottom, the supporting bottom being vertically adjustable relative to the placement base; a reset structure for driving the supporting bottom to reset upwards; a side limiting assembly including two opposing side limiting structures disposed above the bottom slot, the side limiting structures being horizontally adjustable relative to the placement base; and a linkage structure connecting the supporting bottom and the side limiting structures. When the supporting bottom moves downwards, the linkage structure causes the two side limiting structures to move closer together.

2. The ultraviolet-visible spectrophotometer according to claim 1, characterized in that: The linkage structure includes: a first rack, which moves up and down with the bottom of the support; a gear component, which is rotatably connected to the insertion seat and meshes with the first rack; two second racks, which are symmetrical about the center of the gear component and mesh with the gear component; the two second racks are respectively fixed relative to the two side limiting structures; when the first rack moves downward, it drives the two second racks to move closer to each other through the gear component.

3. The ultraviolet-visible spectrophotometer according to claim 2, characterized in that: The first rack is positioned below the bottom of the support.

4. The ultraviolet-visible spectrophotometer according to claim 3, characterized in that: The first rack is a bendable and deformable component.

5. The ultraviolet-visible spectrophotometer according to claim 4, characterized in that: It also includes a guide channel group, which includes a first straight guide channel, a first curved channel, and a second straight guide channel that are arranged and connected in sequence; the first straight guide channel extends vertically, and the second straight guide channel extends horizontally; the first rack passes through the first straight guide channel, the first curved channel, and the second straight guide channel in sequence, and the first rack meshes with the first gear in the first curved channel.

6. The ultraviolet-visible spectrophotometer according to claim 2, characterized in that: The gear assembly includes a first gear and a second gear fixed to each other. The diameter of the first gear is smaller than the diameter of the second gear. The first gear meshes with the first rack, and the second gear meshes with the second rack.

7. The ultraviolet-visible spectrophotometer according to claim 1, characterized in that: The sidewall of the bottom slot is provided with a first soft layer, which is used to contact the cuvette.

8. The ultraviolet-visible spectrophotometer according to claim 1, characterized in that: Each of the two side limiting structures has a second soft layer fixed at one end facing each other, and the second soft layer is used to contact the cuvette.

9. The ultraviolet-visible spectrophotometer according to claim 1, characterized in that: The bottom of the support is provided with a third soft layer, which is used to support the bottom of the cuvette.

10. The ultraviolet-visible spectrophotometer according to claim 1, characterized in that: The cuvette mounting unit is provided in multiple ways, and the multiple cuvette mounting units are arranged at intervals along the front-to-back direction.

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