Light measuring mechanism and chemiluminescence detector

Abstract

The light measuring mechanism comprises a base, a light measuring disc, a clamping assembly and an optical detection assembly, the base is provided with a detection chamber, and a light measuring position is arranged in the detection chamber; the light measuring disc is rotatably installed in the detection chamber, the light measuring disc is provided with a plurality of placing holes distributed in the circumferential direction of the light measuring disc, and the placing holes are used for placing reaction cups, so that when the light measuring disc rotates, the plurality of reaction cups pass through the light measuring positions in sequence; the clamping assembly is arranged in the detection chamber and located at the light measuring position, and the clamping assembly is used for clamping a reaction cup located at the light measuring position; the optical detection assembly is arranged on the seat body and corresponds to the light measuring position, the reaction cup is clamped through the clamping assembly, so that when the reaction cup rotates to the light measuring position, the actual stopping position of the reaction cup is the same as the preset position, the accuracy and consistency of the stopping state of the light measuring position of the reaction cup are guaranteed, and therefore instrument performance parameters are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of biological sample analysis and detection, in particular to a photometric mechanism and a chemiluminescence detector. Background Art

[0002] Chemiluminescence detector combines highly sensitive chemiluminescence measurement technology with highly specific immune response. It is used for the detection and analysis of various antigens, antibodies, hormones and drugs. It is the latest immunoassay technology developed after radioimmunoassay, enzyme immunoassay and fluorescence immunoassay.

[0003] Patent CN220357081U discloses a sample luminescence detection system that can be used for chemiluminescence immunoassay, comprising a drive assembly and a measuring disc housing assembly; the measuring disc housing assembly comprises a measuring disc and a accommodating space; the drive assembly is used to drive the measuring disc to rotate horizontally around its own axis; a plurality of cup placement holes are evenly distributed in the circumferential direction on the upper side surface of the measuring disc; the side walls of the accommodating space are respectively provided with a cup placement / disposal position for placing and removing reaction cups from the cup placement holes, a photometric position for detecting the amount of light in the reaction cup, a waste liquid aspiration position for aspirating waste liquid from the reaction cup, and a substrate filling pipeline for adding luminescent substrate to the reaction cup; the photometric position and the waste liquid aspiration position are respectively located on both sides of the cup placement / disposal position.

[0004] In the above-mentioned prior art, a cup placement hole is provided on the side of the measuring disc for placing a reaction cup. Since the diameter of the cup placement hole is slightly larger than the diameter of the reaction cup, there is a gap between the cup placement hole and the reaction cup. When the measuring disc drives the reaction cup to rotate to the photometric position, the actual stopping position of the reaction cup deviates from the preset position by a certain amount, resulting in inconsistent photometric values and affecting the performance parameters of the instrument. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned technical deficiencies and propose a photometric mechanism to solve the technical problem in the prior art that a cup placement hole is provided on the side of a measuring disc for placing a reaction cup, and because the diameter of the cup placement hole is slightly larger than the diameter of the reaction cup, there is a gap between the cup placement hole and the reaction cup. When the measuring disc drives the reaction cup to rotate to the photometric position, the actual stopping position of the reaction cup deviates from the preset position, resulting in inconsistent photometric values and affecting the performance parameters of the instrument.

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

[0007] The utility model provides a light measuring mechanism, comprising:

[0008] The base body is provided with a detection chamber, wherein a light measuring position is provided in the detection chamber;

[0009] A measuring disc is rotatably mounted in the detection chamber, the measuring disc being provided with a plurality of placement holes distributed along its circumference, the placement holes being used for receiving reaction cups, so that when the measuring disc rotates, the plurality of reaction cups pass through the measuring position in sequence;

[0010] a clamping assembly, disposed in the detection chamber and located at the photometric position, the clamping assembly being used to clamp the cuvette located at the photometric position; and

[0011] The optical detection component is arranged on the base and corresponds to the light measuring position.

[0012] In some embodiments, the clamping assembly includes two clamping blocks, which are located on opposite sides of the light measuring position along a first direction, wherein at least one of the clamping blocks is movably arranged along the first direction to have a movable stroke toward the light measuring position, so that during the movable stroke, the two clamping blocks clamp the reaction cup.

[0013] In some embodiments, the two clamping blocks include a first clamping block and a second clamping block, the first clamping block is fixedly mounted on the side wall of the detection chamber and is located outside the photometric position, and the second clamping block is slidably mounted on the inside of the photometric position along the first direction.

[0014] In some embodiments, the side of the first clamping block facing the light measuring position is a first clamping side, and the middle portion of the first clamping side is recessed to form an arc-shaped notch, and the arc-shaped notch is used to adapt to the reaction cup, so that during the movable stroke, the second clamping block is used to press the reaction cup tightly into the arc-shaped notch.

[0015] In some embodiments, the clamping assembly also includes a mounting seat, which is arranged in the detection chamber and located on the inner side of the light measuring position. The mounting seat is provided with a slide groove extending along the first direction, and the second clamping block is adapted to the slide groove, and the second clamping block is slidably installed in the slide groove.

[0016] In some embodiments, the clamping assembly also includes an elastic member, which is arranged in the slide groove, and the two ends of the elastic member are respectively connected to the second clamping block and the bottom of the slide groove, so that the second clamping block is elastically telescopically arranged along the first direction.

[0017] In some embodiments, a side of the second clamping block facing the light measuring position is a second clamping side, and opposite ends of the second clamping side are gradually inclined in a direction away from the light measuring position.

[0018] In some embodiments, the light measuring mechanism further includes a driving mechanism, a driving end of the driving mechanism is connected to the light measuring optical disc, and the driving mechanism is used to drive the light measuring optical disc to rotate.

[0019] In some embodiments, the light measuring mechanism further includes a heating device, which is disposed in the detection chamber and is used to heat the reaction cup in the detection chamber.

[0020] In addition, the present invention also provides a chemiluminescence detector, which includes the photometric mechanism described in the above technical solution.

[0021] Compared with the prior art, the photometric mechanism provided by the present invention has a base body provided with a detection chamber, a photometric position provided in the detection chamber; the photometric disc is rotatably installed in the detection chamber, the photometric disc is provided with a plurality of placement holes distributed along its circumference, the placement holes are used for placing reaction cups, so that when the photometric disc rotates, a plurality of reaction cups pass through the photometric position in sequence; the clamping assembly is provided in the detection chamber and located at the photometric position, the clamping assembly is used to clamp the reaction cup located at the photometric position; the optical detection assembly is provided on the base body and is arranged corresponding to the photometric position. When in use, the reaction cup with the sample and reagent added is placed on the incubation plate After the incubation is completed, the reaction cup to be tested is grabbed and placed into the placement hole by the gripper, and then the measuring disc rotates the reaction cup to the photometric position. The clamping assembly is started to clamp and fix the reaction cup at the photometric position so that the reaction cup remains in a stable state. Finally, the optical detection assembly detects the reaction. After the detection is completed, the clamping assembly releases the reaction cup to proceed with the detection of the next reaction cup. The clamping assembly clamps the reaction cup so that when the reaction cup rotates to the photometric position, the actual stop position of the reaction cup is the same as the preset position, ensuring the accuracy and consistency of the stop state of the reaction cup at the photometric position, thereby ensuring the performance parameters of the instrument.

[0022] The above description is only an overview of the technical solution of the present invention. In order to enable a clearer understanding of the technical means of the present invention and to implement it according to the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. The specific implementation methods of the present invention are given in detail in the following embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of an embodiment of a light measuring mechanism provided by the present utility model;

[0024] Figure 2 yes Figure 1 A partial cross-sectional view of the middle light metering mechanism;

[0025] Figure 3 yes Figure 2 A partial enlarged view of the middle metering mechanism;

[0026] Figure 4 yes Figure 1 A three-dimensional schematic diagram of the clamping assembly;

[0027] Figure 5 yes Figure 4 A three-dimensional schematic diagram of the first clamping block.

[0028] Description of reference numerals:

[0029] 1-base, 11-base, 12-cover, 121-first mounting protrusion, 122-second mounting protrusion;

[0030] 2-Measure the optical disc;

[0031] 3-clamping assembly, 31-first clamping block, 311-first clamping side, 312-arc-shaped notch, 32-second clamping block, 33-mounting seat, 34-elastic member;

[0032] 4- Optical detection component;

[0033] 5- driving mechanism;

[0034] 6- Heating device;

[0035] 200-cup. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0037] In order to solve the technical problem in the prior art that a cup placement hole is provided on the side of the measuring disc for placing a reaction cup, and since the diameter of the cup placement hole is slightly larger than the diameter of the reaction cup, there is a gap between the cup placement hole and the reaction cup. When the measuring disc drives the reaction cup to rotate to the photometric position, there is a certain deviation between the actual stopping position of the reaction cup and the preset position, resulting in inconsistent photometric values and affecting the performance parameters of the instrument, the utility model provides a photometric mechanism that can ensure the accuracy and consistency of the stop state of the reaction cup at the photometric position, thereby ensuring the performance parameters of the instrument.

[0038] The utility model provides a chemiluminescence detector, which comprises the photometric mechanism described in the above technical solution.

[0039] See also Figure 1 , Figure 1 Schematic diagram of the structure of the light measuring mechanism in one embodiment of the present invention.

[0040] The utility model provides a photometric mechanism, including a base body 1, a photometric disc 2, a clamping assembly 3 and an optical detection assembly 4. The base body 1 is provided with a detection chamber, and a photometric position is provided in the detection chamber; the photometric disc 2 is rotatably installed in the detection chamber, and the photometric disc 2 is provided with a plurality of placement holes distributed along its circumference, and the placement holes are used for placing reaction cups 200, so that when the photometric disc 2 rotates, multiple reaction cups 200 pass through the photometric position in sequence; the clamping assembly 3 is provided in the detection chamber and located at the photometric position, and the clamping assembly 3 is used to clamp the reaction cup 200 located at the photometric position; the optical detection assembly 4 is provided on the base body 1 and is arranged corresponding to the photometric position.

[0041] In this example, see Figures 1 to 3 The base body 1 is provided with a detection chamber, and a photometric position is provided in the detection chamber; the photometric disc 2 is rotatably installed in the detection chamber, and the photometric disc 2 is provided with a plurality of placement holes distributed along its circumference, and the placement holes are used for placing the reaction cup 200, so that when the photometric disc 2 rotates, multiple reaction cups 200 pass through the photometric position in sequence; the clamping component 3 is provided in the detection chamber and located at the photometric position, and the clamping component 3 is used to clamp the reaction cup 200 located at the photometric position; the optical detection component 4 is provided on the base body 1 and corresponds to the photometric position. When in use, after the incubation of the incubation plate is completed, the reaction cup 200 to be tested is placed by the gripper. 0 is grasped and placed into the placement hole, and then the measuring disc 2 rotates the reaction cup 200 to the photometric position. The clamping assembly 3 is started to clamp and fix the reaction cup 200 at the photometric position, so that the reaction cup 200 remains in a stable state. Finally, the optical detection assembly 4 detects the reaction. After the detection is completed, the clamping assembly 3 releases the reaction cup 200 and the next reaction cup 200 can be detected. The clamping assembly 3 clamps the reaction cup 200, so that when the reaction cup 200 rotates to the photometric position, the actual stop position of the reaction cup 200 is the same as the preset position, ensuring the accuracy and consistency of the stop state of the reaction cup 200 at the photometric position, thereby ensuring the performance parameters of the instrument.

[0042] In this embodiment, the base body 1 is provided with a photometric hole connected to the detection chamber, and the photometric hole corresponds to the photometric position setting. The optical detection component 4 is installed on the outside of the base body 1 and is set corresponding to the photometric hole. The optical detection component 4 is used to measure the luminous object in the reaction cup 200 through the photometric hole.

[0043] It should be noted that the optical detection component 4 is a prior art and will not be described in detail here.

[0044] In an embodiment, the base 1 includes a base 11 and a cover 12, the base 11 is provided with a accommodating cavity with an upper opening, the cover 12 is covered at the opening of the accommodating cavity, the base 11 and the cover 12 together enclose the detection chamber, the photometric hole is provided on the side of the base 11 and is connected to the accommodating cavity, the optical detection component 4 is installed on the side of the base 11 and is arranged corresponding to the photometric hole, the photometric optical disc 2 is rotatably installed on the base 11 along the axis in the vertical direction and is located in the accommodating cavity.

[0045] In one embodiment, see Figures 3 and 4 The clamping assembly 3 includes two clamping blocks, which are located on opposite sides of the photometric position along a first direction, wherein at least one of the clamping blocks is movably arranged along the first direction to have a movable stroke toward the photometric position, so that during the movable stroke, the two clamping blocks clamp the reaction cup 200.

[0046] In this embodiment, the cover plate 12 is provided with a first mounting protrusion 121 and a second mounting protrusion 122 on one side facing the base 11. The first mounting protrusion 121 and the second mounting protrusion 122 are arranged in a ring shape, and the first mounting protrusion 121 and the second mounting protrusion 122 are arranged spaced from the outside to the inside. The photometric position is located between the first mounting protrusion 121 and the second mounting protrusion 122. One of the two clamping blocks is mounted on the first mounting protrusion 121, and the other is mounted on the second mounting protrusion 122. At least one of the clamping blocks is movable along the first direction. The two clamping blocks can move in a direction close to and away from the photometric position. When moving in the direction close to the photometric position, the two clamping blocks can clamp the cuvette 200 located on the photometric position to fix the cuvette 200. The two clamping blocks complete the positioning of the cuvette 200, so that the actual stopping position of the cuvette 200 is the same as the preset position, thereby ensuring the accuracy and consistency of the stopping state of the cuvette 200 at the photometric position. When the detection of the cuvette 200 is completed, the clamping blocks move in a direction away from the photometric position, release the cuvette 200, and the measuring disk 2 continues to rotate to perform the next detection of the cuvette 200.

[0047] It can be understood that, among the two clamping blocks, one of them can be movably arranged, or both of them can be movably arranged.

[0048] In one embodiment, see Figures 3 to 5 The two clamping blocks include a first clamping block 31 and a second clamping block 32. The first clamping block 31 is fixedly installed on the side wall of the detection chamber and is located outside the photometric position. The second clamping block 32 is slidably installed along the first direction on the inside of the photometric position.

[0049] In this embodiment, the first mounting protrusion 121 constitutes a portion of the side wall of the detection chamber, that is, the first clamping block 31 is fixedly mounted on the first mounting protrusion 121, and the second mounting protrusion 122 is slidably mounted on the second mounting protrusion 122 along the first direction. The first clamping block 31 is fixed and the second clamping block 32 is movably arranged. When the reaction cup 200 rotates to the photometric position, the second clamping block 32 pushes the reaction cup 200 and presses the reaction cup 200 against the first clamping block 31, completing the positioning of the reaction cup 200. With the first clamping block 31 as the positioning reference, it has high positioning accuracy and ensures the consistency of the position of the reaction cup 200.

[0050] In one embodiment, see Figure 5 The side of the first clamping block 31 facing the light measuring position is a first clamping side 311. The middle part of the first clamping side 311 is recessed to form an arc-shaped notch 312. The arc-shaped notch 312 is used to adapt to the reaction cup 200, so that during the movable stroke, the second clamping block 32 is used to press the reaction cup 200 tightly into the arc-shaped notch 312.

[0051] Since the reaction cup 200 is generally cylindrical and its outer circumference is circular, in order to prevent the reaction cup 200 from moving when the second clamping block 32 presses the reaction cup 200 against the first clamping block 31, in this embodiment, an arc-shaped notch 312 is provided in the middle of the first clamping side 311. The arc-shaped notch 312 extends in the vertical direction, and the curvature of the arc-shaped notch 312 is adapted to the reaction cup 200. The second clamping block 32 can just press the reaction cup 200 into the arc-shaped notch 312. The arc-shaped notch 312 can limit the reaction cup 200 to further improve the positioning accuracy.

[0052] In one embodiment, see Figures 3 and 4 The clamping assembly 3 also includes a mounting seat 33, which is arranged in the detection chamber and located on the inner side of the light measuring position. The mounting seat 33 is provided with a slide groove extending along the first direction, and the second clamping block 32 is adapted to the slide groove, and the second clamping block 32 is slidably installed in the slide groove.

[0053] In this embodiment, the mounting seat 33 is installed on the side of the second mounting protrusion 122 facing the first mounting protrusion 121. The mounting seat 33 is provided with a sliding groove with an opening facing the light measuring position. The second clamping block 32 is slidably installed in the sliding groove. The sliding groove can limit the second clamping block 32 so that it can only move along the first direction, thereby ensuring the movement accuracy.

[0054] In this embodiment, a limiting groove is further provided on the lower side of the slide groove, and the limiting groove extends along the first direction. A limiting protrusion is also provided on the lower side of the second clamping block 32, and the limiting protrusion is located in the limiting groove. The travel of the second clamping block 32 is limited by the limiting cooperation between the limiting protrusion and the limiting groove to avoid excessive movement.

[0055] In one embodiment, see Figures 3 and 4 The clamping assembly 3 also includes an elastic member 34, which is arranged in the slide groove, and the two ends of the elastic member 34 are respectively connected to the second clamping block 32 and the bottom of the slide groove, so that the second clamping block 32 is elastically telescopically arranged along the first direction.

[0056] There is no limitation on the form of driving the second clamping block 32 to move. A driver may be provided, and the driver is connected to the second clamping block 32 to drive its movement, or the second clamping block 32 may be elastically movable by elastic force. In this embodiment, an elastic member 34 is provided between the end of the second clamping block 32 away from the photometric position and the bottom of the slide slot. The elastic member 34 can drive the second clamping block 32 to move toward the photometric position. In the initial state, the first clamping block 31 and the second clamping block 32 are in a state of contact with each other. The spacing between the two is smaller than the diameter of the reaction cup 200. When the measuring disc 2 drives the reaction to rotate to the light measuring position, the reaction cup 200 abuts against the first clamping block 31 and the second clamping block 32. Driven by the measuring disc 2, the second clamping block 32 is pushed away from the light measuring position, compressing the elastic member 34, thereby clamping the reaction cup 200 through the elastic force of the elastic member 34. When the reaction cup 200 rotates out of the light measuring position, the second clamping block 32 returns to its initial position under the drive of the elastic member 34.

[0057] In one embodiment, see Figure 4 The side of the second clamping block 32 facing the light measuring position is a second clamping side, and the opposite ends of the second clamping side are gradually inclined in a direction away from the light measuring position.

[0058] In this embodiment, since the elastic member 34 can only drive the second clamping block 32 to move toward the photometric position, and movement away from the photometric position can only be achieved by the reaction cup 200 pushing the second clamping block 32, and the reaction cup 200 enters between the first clamping block 31 and the second clamping block 32 from the side surfaces of the first clamping block 31 and the second clamping block 32, in order to prevent the reaction cup 200 from abutting and getting stuck on the side surfaces of the second clamping block 32 when entering between the first clamping block 31 and the second clamping block 32, the opposite ends of the second clamping side are gradually inclined in a direction away from the photometric position, that is, chamfers are provided between the second clamping side and the two adjacent side surfaces. This configuration makes the gap between the first clamping block 31 and the second clamping block 32 have a bell-shaped configuration, allowing the reaction cup 200 to smoothly enter between the first clamping block 31 and the second clamping block 32.

[0059] In one embodiment, see Figure 1 The light measuring mechanism further includes a driving mechanism 5, a driving end of the driving mechanism 5 is connected to the light measuring disc 2, and the driving mechanism 5 is used to drive the light measuring disc 2 to rotate.

[0060] In this embodiment, the driving mechanism 5 includes a rotating shaft, two synchronous pulleys, a synchronous belt and a driving motor. The rotating shaft is mounted on the base 11 in a vertical direction, and the upper end of the rotating shaft extends into the accommodating cavity and is fixedly connected to the measuring optical disc 2. One of the synchronous pulleys is fixedly connected to the rotating shaft, and the other synchronous pulley is mounted on the base 11 in a vertical direction. The synchronous belt connects the two synchronous pulleys, and the main shaft of the driving motor is connected to the synchronous pulley, thereby driving the measuring optical disc 2 to rotate through the driving motor.

[0061] In one embodiment, see Figure 1 The photometric mechanism further includes a heating device 6 , which is disposed in the detection chamber and is used to heat the cuvette 200 in the detection chamber.

[0062] In this embodiment, since the sample needs to be kept within a specific temperature range during detection, a heating device 6 is further provided in the detection chamber. The heating device 6 can heat the reaction cup 200 in the detection chamber to ensure the temperature of the sample.

[0063] Specifically, the heating device 6 includes a heating plate, a temperature sensor and a temperature control switch. The heating plate is arranged on the base 11 and is located at the bottom of the detection chamber. The temperature sensor is arranged in the detection chamber. The temperature sensor is used to detect the temperature in the detection chamber. The temperature control switch is electrically connected to the heating plate and the temperature sensor respectively. The temperature control switch is used to control the operation of the heating plate according to the temperature in the detection chamber.

[0064] In this embodiment, the optical measuring plate 2 has an anti-collision code tooth optical coupler and a reset optical coupler, and the anti-collision code tooth optical coupler and the reset optical coupler are used to monitor the step loss and initial reset of the optical measuring plate 2.

[0065] It should be noted that the anti-collision code tooth optical coupler and the reset optical coupler are existing technologies and are not described in detail here.

[0066] In order to better understand the present invention, the following Figures 1 to 5 The technical solution of the utility model is described in detail:

[0067] When in use, the heating device 6 is powered on and starts working, so that the ambient temperature in the detection chamber reaches the ambient temperature required for the test reaction. After the reaction cup 200 with the sample and reagent is incubated on the incubation plate, the gripper is controlled to grab the reaction cup 200 to be tested and place it in the placement hole of the test plate 2.

[0068] The driving mechanism 5 drives the measuring disc 2 to rotate, thereby driving the reaction cup 200 to rotate. When the measuring disc 2 rotates the reaction cup 200 to the light measuring position, the reaction cup 200 pushes the second clamping block 32 to move away from the light measuring position. The elastic member 34 is compressed, and the reaction cup 200 is located between the second clamping block 32 and the first clamping block 31. Under the action of the elastic force of the elastic member 34, the reaction cup 200 is pressed tightly into the arc-shaped notch 312. Under the action of the second clamping block 32 and the first clamping block 31, the reaction cup 200 is kept in a stable state close to the outside. The driving mechanism 5 stops working, and the optical detection assembly 4 measures the luminous object in the reaction cup 200. After the detection is completed, the driving mechanism 5 is started again to drive the reaction cup 200 to rotate out of the second clamping block 32 and the first clamping block 31, thereby completing the detection of the sample in the reaction cup 200.

[0069] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A light measuring mechanism, characterized in that: include: The base body is provided with a detection chamber, wherein a light measuring position is provided in the detection chamber; A measuring disc is rotatably mounted in the detection chamber, the measuring disc being provided with a plurality of placement holes distributed along its circumference, the placement holes being used for receiving reaction cups, so that when the measuring disc rotates, the plurality of reaction cups pass through the measuring position in sequence; a clamping assembly, disposed in the detection chamber and located at the photometric position, the clamping assembly being used to clamp the cuvette located at the photometric position; and The optical detection component is arranged on the base and corresponds to the light measuring position.

2. The light measuring mechanism according to claim 1, wherein: The clamping assembly includes two clamping blocks, which are located on opposite sides of the light measuring position along a first direction, wherein at least one of the clamping blocks is movably arranged along the first direction to have a movable stroke toward the light measuring position, so that during the movable stroke, the two clamping blocks clamp the reaction cup.

3. The light measuring mechanism according to claim 2, wherein: The two clamping blocks include a first clamping block and a second clamping block. The first clamping block is fixedly installed on the side wall of the detection chamber and is located outside the photometric position. The second clamping block is slidably installed along the first direction on the inside of the photometric position.

4. The light measuring mechanism according to claim 3, wherein: The side of the first clamping block facing the photometric position is the first clamping side, and the middle part of the first clamping side is recessed to form an arc-shaped notch, and the arc-shaped notch is used to adapt to the reaction cup, so that during the movable stroke, the second clamping block is used to press the reaction cup tightly into the arc-shaped notch.

5. The light measuring mechanism according to claim 3, wherein: The clamping assembly also includes a mounting seat, which is arranged in the detection chamber and located on the inner side of the light measuring position. The mounting seat is provided with a slide groove extending along the first direction. The second clamping block is adapted to the slide groove, and the second clamping block is slidably installed in the slide groove.

6. The light measuring mechanism according to claim 5, characterized in that: The clamping assembly further includes an elastic member, which is disposed in the slide groove, and two ends of the elastic member are respectively connected to the second clamping block and the bottom of the slide groove, so that the second clamping block is elastically extended and retracted along the first direction.

7. The light measuring mechanism according to claim 6, wherein: The side of the second clamping block facing the light measuring position is a second clamping side, and two opposite ends of the second clamping side are gradually inclined in a direction away from the light measuring position.

8. The light measuring mechanism according to claim 1, wherein: The light measuring mechanism further comprises a driving mechanism, a driving end of which is connected to the light measuring optical disc, and the driving mechanism is used to drive the light measuring optical disc to rotate.

9. The light measuring mechanism according to claim 1, wherein: The photometry mechanism further includes a heating device, which is disposed in the detection chamber and is used to heat the reaction cup in the detection chamber.

10. A chemiluminescence detector, characterized in that: The chemiluminescence detector comprises the photometric mechanism according to any one of claims 1 to 9.

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