A scalable atomic fluorescence spectrometer optical path calibration device

Abstract

This utility model relates to the field of analytical instrument technology and discloses a retractable atomic fluorescence spectrophotometer optical path calibration device, including a spectrophotometer body. A connector is provided on the side wall of the spectrophotometer body, and a rotating stage is rotatably connected to the upper surface of the connector. A clamping assembly is provided inside the rotating stage, and an adjustment assembly is provided inside the spectrophotometer body. The adjustment assembly includes an electric slide rail, whose side wall is fixedly connected to the inside of the spectrophotometer body. A slider is slidably connected to the side wall of the electric slide rail, and a connecting frame is fixedly connected to the side wall of the slider. A rotating shaft is rotatably connected inside the connecting frame. In this utility model, during optical path calibration, a motor drives a worm gear transmission to rotate the rotating shaft to adjust the reflector angle. Simultaneously, the electric slide rail drives the slider to move the reflector horizontally, achieving coordinated adjustment of position and angle. This solves the problems of low calibration accuracy and low efficiency caused by inconvenient adjustment of optical components.

Description

Technical Field

[0001] This utility model relates to the field of analytical instrument technology, and in particular to a retractable atomic fluorescence spectrometer optical path calibration device. Background Technology

[0002] In the field of atomic fluorescence spectrometry, atomic fluorescence spectrophotometers achieve precise quantitative analysis of trace elements by detecting the fluorescence intensity produced after element atoms are excited. The calibration accuracy of the optical path system directly determines the accuracy and reliability of the detection results. Changes in the optical path caused by optical element positional offsets, angular deviations, and environmental factors can affect the transmission efficiency of excitation light and fluorescence signals, thereby reducing detection sensitivity and stability.

[0003] Currently, the optical path calibration of traditional atomic fluorescence spectrometers mainly relies on manual adjustment mechanisms, such as screw-down knobs controlling lens displacement and dials adjusting mirror angles. Their working principle involves operators using experience and signals from optical scales or detectors to manually adjust the position and angle of each optical element, gradually bringing the optical path to an ideal state. In addition, some automated calibration devices use fixed guide rails and stepper motors to achieve linear displacement calibration of optical elements, but angle adjustment still requires manual fine-tuning.

[0004] Because the position adjustment and angle adjustment of optical components are independent and lack a coordinated calibration mechanism, the calibration process is cumbersome and inefficient. For example, manual adjustment requires repeated attempts to adjust multiple parameters, with a single calibration taking tens of minutes. Although automated devices can achieve displacement calibration, their angle fine-tuning accuracy is insufficient to meet the requirements of high-precision detection. Ultimately, this results in low optical path calibration accuracy, which cannot effectively guarantee the instrument's detection accuracy and limits the application effectiveness of atomic fluorescence spectrophotometers in trace analysis. To address these issues, a scalable atomic fluorescence spectrophotometer optical path calibration device is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a retractable atomic fluorescence spectrometer optical path calibration device, which aims to improve the problems of low calibration accuracy and low efficiency caused by the inconvenience of adjusting the position and angle of optical components in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A retractable atomic fluorescence spectrometer optical path calibration device includes a spectrometer body, a connector provided on the side wall of the spectrometer body, a rotating stage rotatably connected to the upper surface of the connector, a clamping assembly provided inside the rotating stage, and an adjustment assembly provided inside the spectrometer body. The adjustment assembly includes an electric slide rail, the side wall of which is fixedly connected to the inside of the photometer body. A slider is slidably connected to the side wall of the electric slide rail, and a connecting frame is fixedly connected to the side wall of the slider. A rotating shaft is rotatably connected inside the connecting frame, a worm gear is fixedly connected to the side wall of the rotating shaft, a worm is rotatably connected inside the connecting frame, a motor is fixedly connected to the bottom of the connecting frame, a rotating rod is fixedly connected to the side wall of the rotating shaft, and a reflector is provided on the side wall of the rotating rod.

[0007] As a further description of the above technical solution: The clamping assembly includes a clamping plate, and multiple sleeves are fixedly connected inside the rotary table. The sidewall of the clamping plate is slidably connected inside the sleeves, and a sampler is provided on the upper surface of the connector.

[0008] As a further description of the above technical solution: A rubber pad is fixedly connected to one side of the clamping plate, and a sliding rod is fixedly connected to the other side of the clamping plate.

[0009] As a further description of the above technical solution: The slide bar sidewall is slidably connected inside the sleeve, and a limit block is fixedly connected to the slide bar sidewall.

[0010] As a further description of the above technical solution: The side wall of the limiting block is slidably connected to the outside of the sleeve, and the side wall of the slide rod is fitted with a spring.

[0011] As a further description of the above technical solution: One end of the spring is fixedly connected to the side wall of the clamping plate, and the other end of the spring is fixedly connected to the inside of the sleeve.

[0012] As a further description of the above technical solution: The worm gear sidewall is rotatably connected inside the connecting frame, and the rotating rod sidewall is rotatably connected to the sidewall of the connecting frame.

[0013] As a further description of the above technical solution: The worm gear meshes with the worm wheel, and the motor output end is connected to the worm gear.

[0014] This utility model has the following beneficial effects: 1. In this utility model, during optical path calibration, the motor drives the worm gear to rotate, which in turn drives the rotating shaft to rotate via the worm wheel transmission, thereby adjusting the angle of the rotating rod and the reflector. At the same time, the electric slide rail drives the slider to slide, which in turn drives the connecting frame and the reflector to move horizontally, thereby realizing optical path calibration. This solves the problem of low calibration accuracy and low efficiency caused by the inconvenience of adjusting the position and angle of optical components. The above technical solution improves the accuracy and efficiency of optical path calibration.

[0015] 2. In this utility model, the sampling tube is placed inside the sleeve, the clamping plate is squeezed to make it slide along the sleeve, the sliding rod is pushed to compress the spring, the spring force clamps the test tube through the clamping plate and the rubber pad, the rubber pad is anti-slip, the sliding rod and the sleeve restrict the movement of the clamping plate, the limiting block anti-slip rod is dislodged, when the test tube is replaced, the spring adaptively adjusts the clamping force, the rotating table can rotate to adjust the angle of the test tube, adapting to the sampling needs of different positions of the sampler, solving the problem that the traditional support structure is fixed and difficult to adapt to sampling tubes of different sizes, and improving the versatility of sampling tube fixing through the above technical solution. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of a retractable atomic fluorescence spectrometer optical path calibration device proposed in this utility model; Figure 2 This is a schematic diagram of the internal structure of a retractable atomic fluorescence spectrometer optical path calibration device proposed in this utility model. Figure 3 This is a schematic diagram of the internal structure of the connecting frame of a retractable atomic fluorescence spectrometer optical path calibration device proposed in this utility model. Figure 4 This is a schematic diagram of the connector structure of a retractable atomic fluorescence spectrometer optical path calibration device proposed in this utility model; Figure 5 This is a schematic diagram of the internal structure of the sleeve of a retractable atomic fluorescence spectrometer optical path calibration device proposed in this utility model.

[0017] Legend: 1. Photometer body; 2. Connector; 3. Rotary stage; 4. Electric slide rail; 5. Slider; 6. Connecting frame; 7. Rotating shaft; 8. Worm gear; 9. Worm; 10. Motor; 11. Rotating rod; 12. Reflector; 13. Sleeve; 14. Clamping plate; 15. Rubber pad; 16. Slide rod; 17. Limiting block; 18. Spring; 19. Sampler. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figures 1-3This utility model provides an embodiment of a retractable atomic fluorescence spectrometer optical path calibration device, comprising a spectrometer body 1. The spectrometer body 1 consists of an optical system excitation light source, a monochromator, a detector, a circuit control system, a gas path system, and a mechanical support structure. It is used to provide an optical path transmission channel, signal processing, and overall machine control, and is the core component of atomic fluorescence detection. This is existing technology and will not be described in detail here. A connector 2 is provided on the side wall of the spectrometer body 1. A rotating stage 3 is rotatably connected to the upper surface of the connector 2. The rotating stage 3 adjusts the angle of the sampler 19 by rotating, achieving calibration at different positions. For precise sample collection, the rotating stage 3 is equipped with a clamping assembly, and the photometer body 1 is equipped with an adjustment assembly. The adjustment assembly includes an electric slide rail 4, which provides a linear motion guide for the slider 5. High-precision displacement control is achieved through a drive motor to adjust the horizontal position of the reflector 12. The side wall of the electric slide rail 4 is fixedly connected to the inside of the photometer body 1, and the slider 5 is slidably connected to the side wall of the electric slide rail 4. The slider 5, carrying the connecting frame 6 and the reflector 12 assembly, slides on the electric slide rail 4, converting the power of the drive motor into linear displacement to achieve longitudinal calibration of the optical path. The side wall of the slider 5 is fixedly connected to a connecting frame 6. The connecting frame 6 supports the rotating shaft 7, worm gear 8, and worm 9, ensuring the relative positions of each component are fixed and improving the stability of angle adjustment. The rotating shaft 7 is rotatably connected inside the connecting frame 6, serving as the rotation center of the reflector 12. Angle control is achieved through the transmission via the worm gear 8 and worm 9. The worm gear 8 is fixedly connected to the side wall of the rotating shaft 7, and the worm 9 is rotatably connected inside the connecting frame 6. A motor 10 is fixedly connected to the bottom of the connecting frame 6. The motor 10, in conjunction with the worm 9 and worm gear 8, drives the rotating shaft 7 to achieve angle adjustment, thus controlling the pitch angle of the reflector 12. To ensure the collimation of the optical path, a rotating rod 11 is fixedly connected to the side wall of the rotating shaft 7. The rotating rod 11 connects the rotating shaft 7 and the reflector 12, transmitting the rotational motion to the reflector 12, expanding the adjustment range, and enhancing the flexibility of optical path adjustment. The side wall of the rotating rod 11 is equipped with a reflector 12. The reflector 12 changes the direction of the optical path by adjusting the angle, so that the excitation light or fluorescence signal is accurately focused on the detector, improving the optical signal transmission efficiency. The side wall of the worm gear 8 is rotatably connected to the inside of the connecting frame 6, and the side wall of the rotating rod 11 is rotatably connected to the side wall of the connecting frame 6. The worm 9 meshes with the worm gear 8, and the output end of the motor 10 is connected to the worm 9. Reference Figures 4-5The clamping assembly includes a clamping plate 14. Multiple sleeves 13 are fixedly connected inside the rotating stage 3. The sidewalls of the clamping plate 14 are slidably connected to the inside of the sleeves 13. A sampler 19 is provided on the upper surface of the connector 2. The sampler 19 is used to extract the solution to be tested from the sample container and deliver it to the atomizer. A rubber pad 15 is fixedly connected to one side of the clamping plate 14. The rubber pad 15, in conjunction with the clamping plate 14, provides anti-slip fixation for the sampling tube, thereby increasing contact friction and preventing the sampling tube from slipping or shifting. A sliding rod 16 is fixedly connected to the other side of the clamping plate 14. The sliding rod 16 cooperates with the sleeves 13 to restrict the clamping plate 14. The movement trajectory ensures a uniform distribution of clamping force. The side wall of the slide rod 16 is slidably connected to the inside of the sleeve 13. The side wall of the slide rod 16 is fixedly connected to the limit block 17, which is used to prevent the slide rod 16 from coming out of the sleeve 13. The side wall of the limit block 17 is slidably connected to the outside of the sleeve 13. A spring 18 is sleeved on the side wall of the slide rod 16. The spring 18, together with the clamping plate 14, elastically clamps the sampling tube, thereby adapting to sampling tubes of different outer diameters and achieving the effect of quick replacement and stable fixation. One end of the spring 18 is fixedly connected to the side wall of the clamping plate 14, and the other end of the spring 18 is fixedly connected to the inside of the sleeve 13.

[0020] Working principle: When the optical path needs to be calibrated, the motor 10 starts and outputs power to drive the worm 9 to rotate. Through the meshing transmission between the worm 9 and the worm wheel 8, the rotating shaft 7 rotates, which drives the rotating rod 11 and the reflector 12 to adjust the angle. At the same time, the electric slide rail 4 drives the slider 5 to slide along the track, which drives the connecting frame 6 and the reflector 12 to make horizontal displacement. The dual adjustment of angle and position realizes the calibration of the optical path. The sampling tube is placed inside the sleeve 13. The sampling tube presses against the clamping plate 14, causing it to slide along the inside of the sleeve 13. At the same time, the sliding rod 16 slides inside the sleeve 13, compressing the spring 18. The elastic force generated by the spring 18 is used to press the sampling tube against the rubber pad 15 through the clamping plate 14. The rubber pad 15 increases the friction to prevent the tube from slipping. The sliding rod 16 and the sleeve 13 cooperate to limit the movement direction of the clamping plate 14, ensuring uniform clamping force. The limiting block 17 prevents the sliding rod 16 from coming out of the sleeve 13. When it is necessary to change the sampling tube with a different outer diameter, the elastic deformation of the spring 18 can adaptively adjust the clamping force to achieve quick and stable fixation. When the rotating table 3 rotates, the fixed sampling tube can be adjusted at an angle to meet the sampling needs of the sampler 19 at different positions.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A retractable atomic fluorescence spectrophotometer optical path calibration device, comprising a spectrophotometer body (1), characterized in that: A connector (2) is provided on the side wall of the photometer body (1), and a rotating table (3) is rotatably connected to the upper surface of the connector (2). A clamping assembly is provided inside the rotating table (3), and an adjustment assembly is provided inside the photometer body (1). The adjustment assembly includes an electric slide rail (4), the side wall of which is fixedly connected to the inside of the photometer body (1). A slider (5) is slidably connected to the side wall of the electric slide rail (4). A connecting frame (6) is fixedly connected to the side wall of the slider (5). A rotating shaft (7) is rotatably connected inside the connecting frame (6). A worm gear (8) is fixedly connected to the side wall of the rotating shaft (7). A worm (9) is rotatably connected inside the connecting frame (6). A motor (10) is fixedly connected to the bottom of the connecting frame (6). A rotating rod (11) is fixedly connected to the side wall of the rotating shaft (7). A reflector (12) is provided on the side wall of the rotating rod (11).

2. The scalable atomic fluorescence spectrometer optical path calibration device according to claim 1, characterized in that: The clamping assembly includes a clamping plate (14), and a plurality of sleeves (13) are fixedly connected inside the rotating table (3). The side wall of the clamping plate (14) is slidably connected inside the sleeves (13), and a sampler (19) is provided on the upper surface of the connector (2).

3. The retractable atomic fluorescence spectrometer optical path calibration device according to claim 2, characterized in that: A rubber pad (15) is fixedly connected to one side of the clamp (14), and a slide rod (16) is fixedly connected to the other side of the clamp (14).

4. The scalable atomic fluorescence spectrometer optical path calibration device according to claim 3, characterized in that: The slide rod (16) is slidably connected to the inside of the sleeve (13) and the slide rod (16) is fixedly connected to the limit block (17).

5. The retractable atomic fluorescence spectrometer optical path calibration device according to claim 4, characterized in that: The side wall of the limiting block (17) is slidably connected to the outside of the sleeve (13), and the side wall of the slide rod (16) is fitted with a spring (18).

6. The retractable atomic fluorescence spectrometer optical path calibration device according to claim 5, characterized in that: One end of the spring (18) is fixedly connected to the side wall of the clamp (14), and the other end of the spring (18) is fixedly connected to the inside of the sleeve (13).

7. The scalable atomic fluorescence spectrometer optical path calibration device according to claim 1, characterized in that: The worm gear (8) is rotatably connected to the inside of the connecting frame (6) and the rotating rod (11) is rotatably connected to the side wall of the connecting frame (6).

8. The scalable atomic fluorescence spectrometer optical path calibration device according to claim 1, characterized in that: The worm (9) meshes with the worm wheel (8), and the output end of the motor (10) is connected to the worm (9).

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