Two-channel iodine element automatic detector

Abstract

The utility model discloses a double-channel iodine element automatic detector. The double-channel iodine element automatic detector comprises a base, a double-channel colorimetric mechanism, a stirring and uniform mixing mechanism, a sample placing mechanism, a material injection mechanism, a cuvette and a shell, the base, the two-channel colorimetric mechanism, the stirring and uniform mixing mechanism, the sample placing mechanism and the injection mechanism are all arranged in the instrument shell, the cuvettes are placed on the sample placing mechanism, the sample placing mechanism is arranged on the base, and one end of a hose of the injection mechanism is vertically aligned with the corresponding cuvette; the two-channel colorimetric mechanism comprises a blue light emitter, a photosensitive sensor and a mounting seat and is used for a colorimetric detection assembly, the stirring and uniform mixing mechanism is arranged below the cuvette so as to uniformly mix a sample and a detection reagent in the cuvette, the two-channel colorimetric mechanism is arranged below the sample placing mechanism, and the cuvette is located between the two-channel colorimetric mechanism. According to the detector, the detection efficiency of a traditional single-channel detector is greatly improved through the dual-channel design.

Description

Technical Field

[0001] The utility model relates to the technical field of iodine element detection, and more specifically, to a dual-channel iodine element automatic detector. Background Art

[0002] Iodine detectors are widely used to detect iodine content in urine, blood, water, salt, soil, milk and vegetables. For different samples to be tested, different reagents usually need to be added for reaction when using colorimetry. The iodine content of the sample to be tested is determined by the time it takes for the reaction to change color. Colorimetric testing requires manual operation by staff, and the process is complicated. The accuracy of visual colorimetry is low, and manual data recording is required to calculate the results, which is prone to errors caused by human factors.

[0003] At present, the existing iodine element detector can only detect one sample at a time during the detection process, with low detection efficiency and long detection time. In addition, it is difficult to determine whether the detection system is working normally during the detection process. Usually, a full sample test is required before a judgment can be made based on all sample data.

[0004] Therefore, in order to solve the above problems, there is an urgent need for a dual-channel iodine element automatic detector with high detection efficiency and the ability to timely judge the working condition of the monitoring system. Utility Model Content

[0005] The purpose of the present invention is to provide a dual-channel iodine element automatic detector. The dual-channel iodine element automatic detector provided by the present invention has the advantages of high detection efficiency, and solves the problems of low detection efficiency, long detection time and inability to timely check the working condition of the equipment during the detection process of existing iodine element detectors.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A dual-channel iodine element automatic detector, comprising: a base, a dual-channel colorimetric mechanism, a stirring and mixing mechanism, a sample placement mechanism, a material injection mechanism, a cuvette, and a housing;

[0008] The base, dual-channel colorimetric mechanism, stirring and mixing mechanism, sample placement mechanism, and injection mechanism are all arranged in the housing, the cuvette is placed on the sample placement mechanism, the sample placement mechanism is arranged on the base, and the end of the injection mechanism hose is aligned with the corresponding cuvette in the upper and lower directions;

[0009] The dual-channel colorimetric mechanism includes a blue light emitter, a photosensor, and a mounting base for performing colorimetric detection on cuvettes at different stations. The stirring and mixing mechanism is arranged below the cuvette to mix the sample and multiple detection reagents in the cuvette. The dual-channel colorimetric mechanism is arranged below the sample placement mechanism, and the cuvette is located between the dual-channel colorimetric mechanisms.

[0010] Preferably, the dual-channel colorimetric mechanism comprises a pair of blue light emitters, a pair of photosensors and a mounting base;

[0011] The blue light emitter and the photosensor are both arranged on the mounting base. In the dual-channel colorimetric mechanism, the paired blue light emitters synchronously emit two beams of light paths at different points, and the paired photosensors are respectively arranged corresponding to the two beams of light paths. The cuvette can be located between the blue light emitter and the photosensor.

[0012] Preferably, the dual-channel colorimetric mechanism is provided with a first detection station and a second detection station corresponding to the two light paths, the stirring and mixing mechanism is provided at the bottom of the second detection station, and the cuvette can pass through the second detection station and the first detection station in sequence.

[0013] Preferably, the stirring and mixing mechanism is provided at the bottom of the second detection station, and a stirring rod of the stirring and mixing mechanism can contact the bottom of the cuvette.

[0014] Preferably, the sample placement mechanism includes a turntable and a driving member, the driving member is fixedly arranged on the base, the turntable is rotatably connected to the output shaft of the driving member, and the turntable is provided with a plurality of accommodating holes for placing the cuvette, and the plurality of accommodating holes are evenly distributed along the circumference of the turntable.

[0015] Preferably, a fan-shaped cover plate is rotatably provided on the turntable.

[0016] Preferably, the injection mechanism includes a reagent kit, a peristaltic pump and an injection hose, one end of the injection hose is connected to the corresponding reagent bottle in the reagent kit, the other end of the injection hose is perpendicular to the cuvette and the other end of the injection hose is above the cuvette, and the peristaltic pump is provided on the injection hose to drive the reagent to flow in the injection hose.

[0017] Preferably, the injection mechanism further includes a guide member, which is arranged above the sample placement mechanism. The guide member is provided with a plurality of guide holes, and one end of the injection hose is passed through the guide holes to inject material into the cuvette.

[0018] The beneficial effects of the utility model are:

[0019] The utility model provides a dual-channel iodine element automatic detector, which, through the setting of a dual-channel colorimetric mechanism, can synchronously perform blue light colorimetric detection on a cuvette transported to the dual-channel colorimetric mechanism by two blue light emitters and a photosensor during the detection process, thereby avoiding the problem of low detection efficiency in traditional detectors that can only detect one sample at a time. The setting of the dual-channel colorimetric mechanism enables the detector to have the ability of dual-light source synchronous detection, greatly improving the efficiency of sample iodine element detection and reducing the labor intensity of users. In addition, the setting of the dual light source enables the dual-channel iodine element automatic detector to judge the working condition of the detector according to the difference between the detection data obtained by the two blue light detection channels before detection, and to promptly discover, repair and replace problematic parts. Furthermore, the dual-channel setting also enables the detector to switch to single-channel mode for detection when one of the detection channels is damaged, thereby providing a certain guarantee for timely detection of samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the utility model dual-channel iodine element automatic detector;

[0021] Figure 2 This is a structural diagram of the dual-channel colorimetric mechanism of the dual-channel iodine element automatic detector of the utility model;

[0022] Figure 3 This is the overall diagram of the utility model dual-channel iodine element automatic detector;

[0023] Figure 4 The utility model is a structural schematic diagram of the stirring and mixing mechanism of the dual-channel iodine element automatic detector.

[0024] Description of reference numerals:

[0025] 1. Shell;

[0026] 2. Sample placement mechanism; 21. Turntable; 211. Accommodation hole; 22. Driving member; 23. Fan-shaped cover plate;

[0027] 3. Base;

[0028] 4. Injection mechanism; 41. Injection hose; 42. Peristaltic pump;

[0029] 5. Dual-channel colorimetric mechanism; 51. Mounting base; 53. Blue light emitter; 54. Photosensor; 6. Cuvette; 7. Guide; 8. Stirring and mixing mechanism; 81. Stirring rod. DETAILED DESCRIPTION

[0030] The following description sets forth many specific details to facilitate a thorough understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific implementations disclosed below.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0033] like Figure 1-Figure 3 As shown, a dual-channel iodine element automatic detector includes: a base 3, a dual-channel colorimetric mechanism 5, a stirring and mixing mechanism 8, a sample placement mechanism 2, an injection mechanism 4, a cuvette 6 and a shell 1; the base 3, the dual-channel colorimetric mechanism 5, the stirring and mixing mechanism 8, the sample placement mechanism 2, and the injection mechanism 4 are all arranged in the shell 1, the cuvette 6 is placed on the sample placement mechanism 2, the sample placement mechanism 2 is arranged on the base 3, and the end of the injection mechanism 4 is aligned with the corresponding cuvette 6 up and down; the dual-channel colorimetric mechanism 5 includes a blue light emitter 53, a photosensor 54 and a mounting seat 51 for performing colorimetric detection on the cuvette 6 at different workstations. The stirring and mixing mechanism 8 is arranged below the cuvette 6 to mix the sample and detection reagent in the cuvette 6, the dual-channel colorimetric mechanism 5 is arranged below the sample placement mechanism 2 and the cuvette 6 is located between the dual-channel colorimetric mechanism 5.

[0034] In this embodiment, the dual-channel iodine automatic detector is provided with a dual-channel colorimetric mechanism 5, so that two blue light detection channels are provided below the cuvette 6 and the sample placement mechanism 2 of the detector to synchronously perform blue light colorimetric detection on the cuvette 6 transported to the dual-channel colorimetric mechanism 5, avoiding the problem that traditional detectors can only detect one sample at a time and the transport mechanism and the stirring mechanism need to be on standby during detection, greatly improving the efficiency of iodine detection and reducing the labor intensity of users. In addition, the stirring and mixing mechanism 8 and one end of the hose of the injection mechanism 4 in the dual-channel iodine automatic detector are at the same workstation as the No. 2 detection position in the dual-channel colorimetric mechanism 5, so that the sample in the detector can immediately undergo a colorimetric reaction to detect the iodine content in the sample after being stirred and mixed with the reagent, greatly shortening the time required for the detection process. Furthermore, the setting of the dual-channel colorimetric mechanism 5 also enables the detector to judge the working condition of the detector based on the difference between the detection data obtained by the two blue light detection channels before detection, and to promptly discover, repair and replace problematic parts. Furthermore, the dual-channel setting also enables the detector to switch to single-channel mode for detection when any of the detection channels is damaged, providing a certain guarantee for timely detection of samples.

[0035] See also Figure 1 The dual-channel blue light spectrometer assembly includes a mounting base 51, a pair of blue light emitters 53, and a pair of photosensors 54. The blue light emitters 53 and photosensors 54 are both mounted on the mounting base 51, and the cuvette 6 can be positioned between the blue light emitters 53 and photosensors 54. The mounting base 51 is provided with a first detection station and a second detection station corresponding to the two light paths. The stirring and mixing assembly is located at the bottom of the second detection station, and the cuvette 6 can pass through the second and first detection stations in sequence. The stirring and mixing mechanism 8 is located at the bottom of the second detection station, and the stirring rod 81 of the stirring and mixing mechanism 8 can contact the cuvette 6.

[0036] like Figure 4 As shown, in one embodiment, the dual-channel colorimetric mechanism 5 forms two detection channels in the detector, and the stirring and mixing mechanism 8 is disposed at the bottom of the second detection station. This allows the stirring and mixing station of the detector to overlap with the second detection station. During use of the detector, when the reaction reagent in the reagent bottle enters the cuvette 6, the sample and reagent can be stirred and mixed at both stations and detected at the second detection station. The second detection station and the first detection station are disposed one after another along the rotation direction of the turntable 21.

[0037] Furthermore, the injection mechanism 4 includes a reagent kit, a peristaltic pump 42, and an injection hose 41. One end of the injection hose 41 is connected to the corresponding reagent bottle in the reagent kit, and the other end of the hose is perpendicular to the top of the cuvette 6. The injection hose 41 is provided with a peristaltic pump 42 to drive the reagent to flow within the injection hose 41. The injection mechanism 4 also includes a guide member 7, which is provided above the sample placement mechanism 2. The guide member 7 has a plurality of guide holes, through which one end of the injection hose 41 is passed to inject the material into the cuvette 6.

[0038] In a preferred embodiment, the guide member 7 and the injection hose 41 are both arranged above the second detection station, so that the second detection station of the detector can realize multiple functions of injection, stirring and mixing, and detection. Therefore, during the use of the detector, the first sample to be tested is rotated to the second detection station, and after the detection reagent is injected and stirred and mixed evenly at the second detection station, the turntable 21 is rotated to rotate the cuvette 6 to the first detection station for colorimetric reaction; at this time, the second sample to be tested is rotated to the second detection station, and after the detection reagent is injected and stirred and mixed evenly at the second detection station, the colorimetric reaction is carried out at the second detection station. After the reaction of the No. 1 and No. 2 samples to be tested is completed through blue light detection, the turntable 21 is rotated again to rotate the third sample to the second detection station, and the above steps are repeated to sequentially realize the iodine element detection of the sample in the cuvette 6 on the turntable 21.

[0039] Furthermore, the peristaltic pump 42 system can be initialized before the test in the injection mechanism 4. By changing the direction of the peristaltic pump 42 driver to run a small-stroke suction cycle for at least 3 times, the reagent in the cuvette 6 is recovered into the reagent bottle to avoid residues from the previous test, effectively ensuring the stable operation of the peristaltic pump 42, softening the inner tube of the peristaltic pump 42 and mixing the special reagent for urine iodine detection, thereby improving the detection stability of the detector.

[0040] See also Figure 2 The sample placement mechanism 2 includes a turntable 21 and a driver 22. The driver 22 is fixedly mounted on the base 3. The turntable 21 rotates an output shaft connected to the driver 22. The turntable 21 is provided with a plurality of receiving holes 211 for receiving cuvettes 6. The plurality of receiving holes 211 are evenly distributed along the circumference of the turntable 21, such that the spacing between adjacent receiving holes 211 is equal. A fan-shaped cover plate 23 is also rotatably mounted on the turntable 21.

[0041] In this embodiment, the equidistant arrangement of all adjacent receiving holes 211 ensures that the cuvette 6 on the turntable 21 accurately stays at the first and second detection stations as the turntable 21 rotates, avoiding detection errors caused by positional deviations of the cuvette 6. The rotatable fan-shaped cover 23 allows the detector to rotate the fan-shaped cover 23 to place the sample-filled cuvette and observe the conditions within the detector before testing, thereby isolating internal exhaust gas and external dust.

[0042] Furthermore, in a preferred embodiment, the sample placement mechanism 2 is also provided with a reset sensor, and the reset sensor is preferably a photoelectric sensor and a light-shielding baffle. The reset sensor is arranged below the turntable 21, and the light-shielding baffle corresponds to the reset sensor and is arranged below the turntable 21. When the turntable 21 is reset to the original position for starting detection, the light-shielding baffle is facing the photoelectric sensor to ensure that the turntable 21 is reset to the initial original position after each use of the detector.

[0043] In one embodiment, a controller is provided in the housing 1 of the detector, and the controller is electrically connected to the turntable 21, the peristaltic pump 42, the injection mechanism 4 and the dual-channel colorimetric mechanism 5 to control the opening and closing of the turntable 21, the peristaltic pump 42, the injection mechanism 4 and the dual-channel colorimetric mechanism 5. The controller controls the opening and closing of multiple injection hoses 41 by controlling the peristaltic pump 42 corresponding to each injection hose 41 and the opening and closing to adapt to the detection of samples. The dual-channel colorimetric mechanism 5 can detect the data of the color change of the sample to be tested after the reagent is added, and transmit the data to the controller. The controller receives the data sent by the dual-channel colorimetric mechanism 5, and determines the time when the color of the sample to be tested changes after the reagent is added, and compares it with the time when the reagent filling is completed, determines the reaction time of the sample to be tested from the completion of the reagent filling to the color change, and calculates the sample concentration based on the reaction curve of the sample concentration and reaction time.

[0044] Based on the above-mentioned dual-channel iodine element automatic detector, the present invention also provides the use steps and detection process of the dual-channel iodine element automatic detector:

[0045] 1. The turntable 21 of the dual-channel iodine element automatic detector returns to the origin. If the return to the origin is successful, proceed to the next step; if the return to the origin error is prompted, further repair and adjust the detector until the detector returns to the origin successfully and proceed to the next step;

[0046] 2. Initialize the peristaltic pump 42 and run it three times with a small-stroke suction cycle by changing the direction of the peristaltic pump 42 driver to recover the reagent in the pipeline into the reagent bottle;

[0047] 3. The turntable 21 rotates from position 0 (i.e., the residual liquid level when the pipeline is emptied) to the first specimen station. At this time, the cuvette 6 containing the specimen to be tested, No. 1, enters the second testing station.

[0048] 4. Injecting and mixing: inject the special reagent in the urine iodine detection kit into the No. 1 cuvette 6 through the injection mechanism 4, and start stirring and mixing through the stirring and mixing mechanism 8;

[0049] 5. After the injection and stirring of cuvette No. 1 are completed, the turntable 21 rotates one station again, and cuvette No. 1 enters the first detection station and automatically starts detection. At the same time, cuvette No. 2 enters the second detection station as the turntable 21 rotates;

[0050] 6. Inject the special reagent in the urine iodine reagent bottle into the No. 2 cuvette 6, and the equipment automatically performs the same steps as process 4;

[0051] 7. After the special reagent is injected into the No. 2 cuvette 6 and mixed with the sample, the detection and analysis will automatically begin;

[0052] 8. After the No. 1 and No. 2 tests and analyses are completed, go to process 3-7 and automatically start the subsequent tests and analyses in sequence until all the specimens to be tested and the samples to be tested are tested and analyzed;

[0053] 9. After all specimens and samples are tested and analyzed, the standard curve and sample concentration are automatically generated, the equipment automatically recovers the reagents in the system pipeline, and prompts that the test is completed.

[0054] Furthermore, in the specific detection and analysis process in steps 8 and 9, during the real-time sampling process, the data change rate is analyzed. During the detection process of the detector, when the concentration of iodine element is higher than 300ug / l during the detection process, the sampling frequency remains unchanged. When the concentration of iodine element is lower than 300ug / l during the detection process, the sampling frequency is modified to an acquisition frequency not higher than 10Hz.

[0055] To ensure the measurement accuracy of the dual-channel iodine element automatic detector, a high-precision constant current source is used to power the blue light emitter 53 to ensure the stability of the light source and the consistency of the light intensity; the photosensor 54 and the light receiving circuit in the controller are also powered by a high-precision reference voltage source, which further reduces the measurement error caused by power supply drift and improves the measurement accuracy and stability.

[0056] Furthermore, to ensure the accuracy of the dual-channel iodine automatic detector's measurement results, experimental data was accumulated and curve fitting was performed on the experimental data according to temperature and concentration. Error curves under different concentration ranges and temperatures were obtained to further correct the measurement results. The following table shows the specific data results obtained from the dual-channel iodine automatic detector when the sample was 148ug / l and the ambient temperature was 30.0℃:

[0057]

[0058] In the table above, test number 1 is 10 samples with a concentration of 148ug / l. At an ambient temperature of 30.0°C, the detection time of the single-channel iodine detector and the dual-channel iodine automatic detector are shown, as well as the detection efficiency difference between the single-channel iodine detector and the dual-channel iodine automatic detector based on the detection time.

[0059] Test No. 2 consists of 20 samples with a concentration of 148ug / l. At an ambient temperature of 30.0°C, the detection time of the single-channel iodine element automatic detector and the dual-channel iodine element automatic detector are respectively measured, and the detection efficiency difference between the single-channel iodine element detector and the dual-channel iodine element automatic detector is obtained based on the detection time.

[0060] Test number 3 consists of 30 samples with a concentration of 148ug / l. At an ambient temperature of 30.0℃, the detection time of the single-channel iodine element automatic detector and the dual-channel iodine element automatic detector are respectively measured, and the detection efficiency difference between the single-channel iodine element detector and the dual-channel iodine element automatic detector is obtained based on the detection time.

[0061] Test No. 4 consists of 40 samples with a concentration of 148ug / l. At an ambient temperature of 30.0°C, the detection time of the single-channel iodine element automatic detector and the dual-channel iodine element automatic detector are respectively measured, and the detection efficiency difference between the single-channel iodine element detector and the dual-channel iodine element automatic detector is obtained based on the detection time.

[0062] Test number 5 consists of 50 samples with a concentration of 148ug / l. At an ambient temperature of 30.0°C, the detection time of the single-channel iodine element automatic detector and the dual-channel iodine element automatic detector are respectively used, and the detection efficiency difference between the single-channel iodine element detector and the dual-channel iodine element automatic detector is obtained based on the detection time.

[0063] It can be seen that under different sample quantities, the detection efficiency of the dual-channel iodine automatic detector is significantly higher than that of the traditional single-channel iodine detector, and its detection efficiency gradually increases with the increase in sample quantity. Further, when designing the structure of the dual-channel iodine automatic detector, in the colorimetric stage of the test: after adding the reagent to the first cuvette 6, stirring is performed, and at least 3-4 seconds of stirring and mixing time is required. The turntable 21 rotates and shifts to the second cuvette 6. After adding the reagent, it also takes at least 3-4 seconds to mix. At the same time, the first cuvette 6 starts colorimetric testing. After the second cuvette 6 is mixed (also the second colorimetric station), the two channels are successively colorimetric tested, the threshold value of the end of the reaction is statistically calculated, and the time parameters of the filling time, stirring time, and the shift time of the turntable 21 are accumulated. Through a large amount of experimental data, it is found that it takes at least 6 seconds to complete the above steps, and the colorimetric test of the solution with extremely high iodine content (800ug / L or above) is 0. The reaction time does not exceed 10 seconds. If the single-point drip stirring is further upgraded and supplemented with a three-channel (point) tester, at least 2 drips, 2 stirrings, and 2 point movements are required before the test. It will take at least 12 seconds to complete the above steps. If the cuvette 6 of the first detection station contains a solution with a very high iodine concentration (800ug / L or above), the reaction time may be less than the time required for the previous dripping time, stirring time, and shifting of the turntable 21. This results in the solution in the first detection station not starting colorimetric detection yet, and the colorimetric reaction of the reagent and the iodine element in the liquid to be tested has been completed. Therefore, relatively speaking, the dual-channel iodine element automatic detector further maximizes the detection efficiency while ensuring detection accuracy.

[0064] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A dual-channel iodine element automatic detector, characterized in that: The dual-channel iodine element automatic detector comprises: a base, a dual-channel colorimetric mechanism, a stirring and mixing mechanism, a sample placement mechanism, a material injection mechanism, a colorimetric cell, and a housing; The base, dual-channel colorimetric mechanism, stirring and mixing mechanism, sample placement mechanism, and injection mechanism are all arranged in the housing, the cuvette is placed on the sample placement mechanism, the sample placement mechanism is arranged on the base, and one end of the injection mechanism can be aligned with the cuvette in an upper and lower direction; The dual-channel colorimetric mechanism includes a blue light emitter, a photosensor, and a mounting base for performing colorimetric detection on cuvettes at different workstations. The stirring and mixing mechanism is arranged below the cuvette to mix the sample and detection reagent in the cuvette. The dual-channel colorimetric mechanism is arranged below the sample placement mechanism and the cuvette is located between the dual-channel colorimetric mechanisms.

2. The dual-channel iodine element automatic detector according to claim 1, characterized in that: The dual-channel colorimetric mechanism includes a pair of blue light emitters, a pair of photosensors and a mounting seat. The blue light emitter and the photosensor are both arranged on the mounting base. In the dual-channel colorimetric mechanism, the paired blue light emitters synchronously emit two beams of light paths at different points, and the paired photosensors are respectively arranged corresponding to the two beams of light paths. The cuvette can be located between the blue light emitter and the photosensor.

3. The dual-channel iodine element automatic detector according to claim 2, characterized in that: The dual-channel blue light splitter is provided with a first detection station and a second detection station corresponding to the two light paths; the stirring and mixing mechanism is provided at the bottom of the second detection station; and the cuvette can pass through the first detection station and the second detection station in sequence.

4. The dual-channel iodine element automatic detector according to claim 3, characterized in that: The stirring and mixing mechanism is arranged at the bottom of the second detection station, and the stirring rod of the stirring and mixing mechanism can contact the bottom of the cuvette.

5. The dual-channel iodine element automatic detector according to claim 3, characterized in that: The sample placement mechanism includes a turntable and a driving member, the driving member is fixedly arranged on the base, the turntable is rotatably connected to the output shaft of the driving member, and the turntable is provided with a plurality of accommodating holes for placing the cuvettes, and the plurality of accommodating holes are evenly distributed along the circumference of the turntable.

6. The dual-channel iodine element automatic detector according to claim 5, characterized in that: The spacing between the accommodating holes is evenly distributed along the circumference of the rotating disk.

7. The dual-channel iodine element automatic detector according to claim 5, characterized in that: A fan-shaped cover plate is also rotatably provided on the turntable.

8. The dual-channel iodine automatic detector according to any one of claims 1 to 7, characterized in that: The injection mechanism includes a reagent kit, a peristaltic pump and an injection hose. One end of the injection hose is connected to the corresponding reagent bottle in the reagent kit, and the other end of the injection hose is perpendicular to the cuvette and above the cuvette so that the injection hose can inject the reagent in the reagent bottle into the cuvette. The peristaltic pump is provided on the injection hose to drive the reagent to flow in the injection hose.

9. The dual-channel iodine element automatic detector according to claim 8, characterized in that: The injection mechanism further includes a guide member, which is arranged above the sample placement mechanism. The guide member is provided with a plurality of guide holes, and one end of the injection hose is passed through the guide holes to inject material into the cuvette.

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