A safety detector for determination of toxic and harmful components in food

Abstract

This invention provides a safety detector for determining toxic and harmful components in food, belonging to the field of food testing technology. It solves the technical problems of existing detectors, such as low automation and inability to detect multiple harmful components. The device includes a detection chamber with a test tube rotating mechanism in the center, a test tube rack mechanism and a rotating liquid injection mechanism at the top, a spectrometer at the bottom, a moving mechanism on the left side, and a waste container at the bottom. During operation, several extraction mechanisms are installed on the detection chamber. This invention features a clamping, transporting, and flipping extraction mechanism, ensuring stable flow of the extraction mixture into the test tubes, achieving stable transport. It can handle the input, transfer, and output of test tubes, maintaining a clean internal environment. It can determine multiple harmful components, enabling rapid and automatic detection of food, is highly efficient and convenient, automatically replenishes missing test tubes, and has a high degree of automation.

Description

Technical Field

[0001] This utility model belongs to the field of food testing technology, and relates to a safety testing instrument for determining toxic and harmful components, particularly a safety testing instrument for determining toxic and harmful components in food. Background Technology

[0002] Food safety analyzers are used to check the content of toxic and harmful substances and various additives in food. They are mainly used in various foods and agricultural products to detect various toxic and harmful components. The relevant indicator components in the tested food sample and the detection solution undergo a specific reaction under certain conditions, which can generate products of different color depths. These products selectively absorb visible light of different wavelengths, so a spectrometer is often used for detection.

[0003] Currently, food safety testing generally requires professional testing institutions. These institutions are highly specialized and have low levels of automation. General safety testing instruments can only perform single-item tests, but the diversity of toxic and harmful components is high, and single-item tests are insufficient to meet the needs.

[0004] Therefore, we propose a safety detector for determining toxic and harmful components in food. It can clamp, transport, and flip the extraction mechanism, allowing the extraction mixture to flow stably into the test tube, achieving stable transport. It can input, transport, and output test tubes, ensuring a clean internal environment. It can also determine various harmful components according to selection, enabling rapid and automatic detection of food. It is efficient and convenient, and can automatically replenish missing test tubes, exhibiting a high degree of automation. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a safety detector for determining toxic and harmful components in food. The technical problem this invention aims to solve is: how to achieve efficient, stable, and selectable automatic detection of various toxic and harmful components in food.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A safety testing instrument for determining toxic and harmful components in food includes a testing chamber. Inside the testing chamber, a test tube rotating mechanism is located in the center. At the top of the testing chamber, a test tube rack mechanism and a rotary injection mechanism are located. The test tube rack mechanism is situated above and to the right of the test tube rotating mechanism, and the rotary injection mechanism is situated above and to the rear of the test tube rotating mechanism. The rotary injection mechanism is connected to an external multi-port liquid supply tank via a pipe. At the bottom of the testing chamber, a spectrometer is located behind and connected to the test tube rotating mechanism. On the left side of the testing chamber, a moving mechanism is located above and to the left of the test tube rotating mechanism. The moving mechanism, test tube rack mechanism, rotary injection mechanism, and spectrometer are arranged in a circular pattern. A waste container is located at the bottom of the testing chamber. During operation, several extraction mechanisms are installed on the testing chamber.

[0008] The working principle of this utility model is as follows: When determining harmful components in food, the staff performs pretreatment by crushing the food to be tested, placing a certain amount of crushed material into the extraction mechanism, adding a certain amount of extractant into the extraction mechanism, and then performing oscillation extraction. After completion, the extraction mechanism is placed in the detection chamber.

[0009] The target harmful component is then selected, the detection is initiated, the moving mechanism moves and clamps the extraction mechanism, moving it above the test tube rotating mechanism. The extraction mechanism is then rotated, causing it to flip. The internal extract, after filtration, drips into the test tube on the rotating mechanism, completing the extraction. The moving mechanism then rotates the extraction mechanism to prevent internal contamination and transports it from the detection chamber to the waste box for waste recovery. After extraction, the test tube rotating mechanism moves the test tube to the bottom of the rotary injection mechanism. The rotary injection mechanism, based on the selected component, injects the corresponding harmful component's detection solution into the test tube. After mixing and standing for a period, the test tube rotating mechanism moves the test tube to the spectrometer. The spectrometer performs spectral analysis on the test tube to determine the harmful component and its content. After measurement, the test tube rotating mechanism moves the tested test tube and then transports it to the waste box, completing the detection.

[0010] The test tube rack mechanism moves to add a new test tube to the test tube rotating mechanism.

[0011] The detection chamber has an clearance hole and a test tube discharge hole at the center of the bottom. The test tube discharge hole is located to the right of the clearance hole. The bottom of the detection chamber has a waste hole and an electric push rod. The telescopic end of the electric push rod has a support plate. The top left side of the detection chamber has a mounting bracket. The front of the top of the detection chamber has a discharge hole, the position of which matches the position of the electric push rod. The top of the detection chamber has an operation screen, which is electrically connected to the spectrometer, the test tube rotation mechanism, the moving mechanism, the test tube rack mechanism, and the rotary liquid injection mechanism.

[0012] With the above structure, the clearance hole facilitates the installation of the motor, the test tube discharge hole outputs the test tubes that have completed the test, the waste hole facilitates the output of the extraction mechanism that has completed extraction, the telescopic end of the electric push rod one drives the support plate to move upward, the support plate is used to support the extraction mechanism, and it is convenient to place the extraction mechanism. After the operator places the extraction mechanism, the telescopic end of the electric push rod one drives the support plate and the extraction mechanism on it to move downward, returning to the initial position. The mounting bracket is used to install the test tube rack mechanism, the operation screen facilitates visual operation, and the discharge hole facilitates the placement of the extraction mechanism for the selection of harmful components.

[0013] The test tube rotation mechanism includes a fixed base and a drive motor. The drive motor is fixed at the bottom center of the detection box, and the fixed base is fixed at the bottom center of the detection box. A detection hole is opened on the outer side of the fixed base, and a test tube holder is rotatably mounted inside the fixed base. The output shaft of the drive motor is connected to the test tube holder. The test tube holder has several circumferentially distributed test tube grooves, and several circumferentially distributed detection ports are opened inside the test tube holder. The number and position of the detection ports match the test tube grooves, and the detection ports are all located on the outer side of the corresponding test tube grooves. The detection ports are connected to the inside of the corresponding test tube grooves, and when the test tube holder rotates, the detection ports are connected to the detection holes in sequence.

[0014] With the above structure, the output shaft of the drive motor drives the test tube holder to rotate on the fixed base, thereby causing several test tube slots on it to move. When the test tube holder rotates, several test tube slots rotate in sequence to the position facing the detection hole, and several corresponding detection ports are connected to the detection hole in sequence to facilitate detection.

[0015] The rotary injection mechanism includes a rotary seat and a second drive motor. The second drive motor is fixed on the mounting frame, and a drive gear is fixed below the output shaft of the second drive motor. The rotary seat is rotatably mounted on the mounting frame, and a driven gear is fixed on the outer side of the rotary seat. Both the driven gear and the drive gear are located below the mounting frame, and the driven gear meshes with the drive gear. An electric push rod is provided at the middle of the upper end of the rotary seat, and a top plate is fixed on the telescopic end of the electric push rod. Several quantitative injection guns are provided on the rotary seat, and a control plate is provided at the upper end of each quantitative injection gun. The quantitative injection guns are connected to an external multi-port liquid supply tank through pipes.

[0016] Using the above structure, the output shaft of the second drive motor drives the drive gear to move, the drive gear drives the driven gear to move, the driven gear drives the rotating seat to move, and the rotating seat drives several quantitative injection guns on it to move, so that the quantitative injection gun corresponding to the harmful component to be measured moves to the top of the test tube. Then, the telescopic end of the second electric push rod extends and drives the top plate to move upward. The top plate drives the control plate at the corresponding position to move upward. The movement of the control plate controls the quantitative injection gun to inject liquid. The external multi-channel liquid supply tank supplies liquid. After injecting the quantitative test liquid, the telescopic end of the second electric push rod returns to the initial position, completing the liquid injection.

[0017] The test tube rack mechanism includes a test tube rack, which is fixed to the inner top right side of the testing box. An electric push rod three is fixed to one side of the test tube rack. The telescopic end of the electric push rod three extends into the interior of the test tube rack. A push plate is fixed to the telescopic end of the electric push rod three. The push plate is slidably disposed inside the test tube rack. A fixing frame is fixed to the other side of the test tube rack. An electric lead screw is provided on the inner side of the fixing frame. An electric gripper two is provided on the lead screw slide of the electric lead screw. The electric gripper two is directly opposite the test tube rack.

[0018] Using the above structure, staff regularly replenish test tubes to the test tube rack. When replenishing test tubes to the test tube holder, the telescopic end of the electric push rod three extends to push the push plate. The push plate pushes several test tubes to slide on the test tube rack, pushing out the test tube at the front. At this time, the electric gripper two is facing the test tube rack, and the test tube at the front slides from the test tube rack into the two grippers of the electric gripper two. Then, the electric gripper two holds the test tube at the front and moves under the drive of the electric screw to the test tube holder above the test tube slot to be replenished, and places the test tube at the front in the corresponding test tube slot.

[0019] The moving mechanism includes an arc-shaped slide rail, which is fixed inside the left side of the detection box. A rotating rod is slidably mounted on the arc-shaped slide rail, and an electric gripper is rotatably mounted on the rotating rod. A drive motor is mounted at the end of the electric gripper. A drive motor is fixed below the arc-shaped slide rail, and the output shaft of the drive motor is connected to the rotating rod in a transmission manner.

[0020] Using the above structure, the output shaft of drive motor three drives the rotating rod to slide on the arc-shaped slide rail. The rotating rod drives electric gripper one to move. When the test begins, electric gripper one moves to the top of the support plate. After the support plate returns to its initial position, electric gripper one clamps the extraction mechanism on it and moves the extraction mechanism to the top of a test tube slot in the test tube holder. Then, the output shaft of drive motor four drives electric gripper one to flip, thereby causing the extraction mechanism to flip, so that the extracted liquid in the extraction mechanism flows into the test tube at the corresponding position.

[0021] The extraction mechanism includes an extraction cup and a filter funnel. The filter funnel is fitted over the upper end of the extraction cup. Both the upper end of the extraction cup and the lower end of the filter funnel are fitted with rims. Filter paper is provided inside the filter funnel.

[0022] Using the above structure, when determining harmful components in food, the staff places the crushed food particles to be extracted into the extraction cup, then adds a certain amount of extractant to the extraction cup, and after shaking and extraction, places the filter funnel over the top of the extraction cup. The upper end of the extraction cup and the lower end of the filter funnel are in contact with the sleeve edge, which facilitates clamping and flipping. During flipping, the extraction mixture flows from the filter funnel into the test tube at the corresponding position, and the filter paper is used to filter the extraction mixture.

[0023] Compared with existing technologies, this safety detector for determining toxic and harmful components in food has the following advantages:

[0024] 1. The extraction mechanism is placed in the detection box and, in conjunction with the moving mechanism, clamps, transports, and flips the extraction mechanism, so that the extraction mixture in the extraction mechanism flows steadily into the test tube, achieving stable transport.

[0025] 2. Several test tubes are rotated and transported by the test tube rotating mechanism. In conjunction with the detection box, the input, transfer and output of test tubes are realized, ensuring the cleanliness of the internal environment. In conjunction with the rotating liquid dispensing mechanism, various harmful components can be determined according to the selection.

[0026] 3. The test tube is transported via a rotating mechanism and used in conjunction with a spectrometer for rapid detection, which is efficient and convenient.

[0027] 4. The test tube rack mechanism works in conjunction with the test tube rotation mechanism to automatically replenish missing test tubes, resulting in a high degree of automation. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of this utility model.

[0029] Figure 2 This is a partially cutaway schematic diagram of this utility model.

[0030] Figure 3 This is a three-dimensional structural diagram of the testing box in this utility model.

[0031] Figure 4 This is a partial cross-sectional view of the testing box in this utility model.

[0032] Figure 5 This is a schematic diagram of the test tube rotation mechanism in this utility model.

[0033] Figure 6 This is a schematic diagram of the rotating liquid injection mechanism in this utility model.

[0034] Figure 7 This is a schematic diagram of the test tube rack mechanism in this utility model.

[0035] Figure 8This is a schematic diagram of the moving mechanism in this utility model.

[0036] Figure 9 This is a schematic diagram of the extraction mechanism in this utility model.

[0037] In the diagram: 1. Detection box; 2. Waste box; 3. Moving mechanism; 4. Test tube rotating mechanism; 5. Test tube rack mechanism; 6. Spectrometer; 7. Rotary dispensing mechanism; 8. Control panel; 9. Discharge hole; 10. Mounting bracket; 11. Test tube discharge hole; 12. Waste hole; 13. Electric push rod 1; 14. Test tube holder; 15. Detection hole; 16. Drive motor 1; 17. Quantitative dispensing gun; 18. Control panel; 19. Top plate; 20. Electric push rod II; 21. Rotating seat; 22. Drive motor II; 23. Drive gear; 24. Driven gear; 25. Electric push rod III; 26. Push plate; 27. Test tube rack; 28. Electric lead screw; 29. ​​Fixing frame; 30. Arc-shaped slide rail; 31. Drive motor III; 32. Rotating rod; 33. Electric gripper I; 34. Drive motor IV; 35. Extraction cup; 36. Filter funnel; 37. Electric gripper II. Detailed Implementation

[0038] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0039] like Figures 1-9 As shown, this safety testing instrument for determining toxic and harmful components in food includes a testing chamber 1. A test tube rotating mechanism 4 is located in the middle of the interior of the testing chamber 1. A test tube rack mechanism 5 and a rotary injection mechanism 7 are located at the top of the interior of the testing chamber 1. The test tube rack mechanism 5 is located above and to the right of the test tube rotating mechanism 4, and the rotary injection mechanism 7 is located above and to the rear of the test tube rotating mechanism 4. The rotary injection mechanism 7 is connected to an external multi-port liquid supply tank via a pipe. A spectrometer 6 is located at the bottom of the interior of the testing chamber 1, behind and connected to the test tube rotating mechanism 4. A moving mechanism 3 is located on the left side of the interior of the testing chamber 1, above and to the left of the test tube rotating mechanism 4. The positions of the moving mechanism 3, the test tube rack mechanism 5, the rotary injection mechanism 7, and the spectrometer 6 are arranged in a circular pattern. A waste container 2 is located below the testing chamber 1. During operation, the testing chamber 1 is equipped with several extraction mechanisms.

[0040] In this embodiment, when determining harmful components in food, the staff performs pretreatment by crushing the food to be tested, placing a certain amount of the crushed material into the extraction mechanism, adding a certain amount of extractant into the extraction mechanism, and then performing oscillation extraction. After completion, the extraction mechanism is placed in the detection chamber 1.

[0041] Then, the harmful component to be measured is selected, the detection is started, the moving mechanism 3 moves and clamps the extraction mechanism, moves the extraction mechanism above the test tube rotating mechanism 4, and then rotates the extraction mechanism to flip it over. The internal extract liquid is filtered and drips into the test tube on the test tube rotating mechanism 4 to complete the extraction. Then, the moving mechanism 3 drives the extraction mechanism to flip to avoid contamination of the inside, and transports the extraction mechanism from the detection box 1 to the waste box 2 to complete the waste recycling. After the extraction is completed, the test tube rotating mechanism 4 drives the test tube on it to rotate and move to the bottom of the rotary injection mechanism 7. The rotary injection mechanism 7 moves according to the selection to inject the detection liquid of the corresponding harmful component into the test tube. After mixing, it is left to stand for a period of time. Then, the test tube rotating mechanism 4 drives the test tube to be tested to the spectrometer 6. The spectrometer 6 performs spectral analysis on the test tube to be tested to determine the harmful component and its content. After the measurement is completed, the test tube rotating mechanism 4 drives the tested test tube to move, and then the test tube is transported to the waste box 2 to complete the detection.

[0042] The test tube rack mechanism 5 moves to add a new test tube to the test tube rotating mechanism 4.

[0043] The bottom center of the test chamber 1 is provided with a clearance hole and a test tube discharge hole 11. The test tube discharge hole 11 is located to the right of the clearance hole. The bottom of the test chamber 1 is provided with a waste hole 12 and an electric push rod 13. The telescopic end of the electric push rod 13 is provided with a support plate. The top left side of the test chamber 1 is fixed with a mounting bracket 10. The front side of the upper end of the test chamber 1 is provided with a discharge hole 9. The position of the discharge hole 9 matches the position of the electric push rod 13. The upper end of the test chamber 1 is provided with an operation screen 8. The operation screen 8 is electrically connected to the spectrometer 6, the test tube rotation mechanism 4, the moving mechanism 3, the test tube rack mechanism 5, and the rotating liquid injection mechanism 7.

[0044] In this embodiment, the clearance hole facilitates the installation of the motor, the test tube discharge hole 11 outputs the test tubes that have completed the test, the waste hole 12 facilitates the output of the extraction mechanism that has completed the extraction, the telescopic end of the electric push rod 13 drives the support plate to move upward, the support plate is used to support the extraction mechanism, and it is convenient to place the extraction mechanism. After the operator places the extraction mechanism, the telescopic end of the electric push rod 13 drives the support plate and the extraction mechanism on it to move downward, returning to the initial position. The mounting bracket 10 is used to install the test tube rack mechanism 5, the operation screen 8 facilitates visual operation, and the discharge hole 9 facilitates the placement of the extraction mechanism for the selection of harmful components.

[0045] The test tube rotation mechanism 4 includes a fixed base and a drive motor 16. The drive motor 16 is fixed at the middle position below the test box 1, and the fixed base is fixed at the middle position of the bottom inside the test box 1. A test hole 15 is opened on the outside of the fixed base, and a test tube seat 14 is rotatably installed inside the fixed base. The output shaft of the drive motor 16 is connected to the test tube seat 14 for transmission. The test tube seat 14 is provided with several circumferentially distributed test tube grooves, and several circumferentially distributed test ports are opened inside the test tube seat 14. The number and position of the test ports match the test tube grooves, and the test ports are all located on the outside of the corresponding test tube grooves. The test ports are connected to the inside of the corresponding test tube grooves, and when the test tube seat 14 rotates, the test ports are connected to the test hole 15 in sequence.

[0046] In this embodiment, the output shaft of the drive motor 16 drives the test tube holder 14 to rotate on the fixed base, thereby driving the movement of several test tube slots on it. When the test tube holder 14 rotates, several test tube slots rotate in sequence to the position facing the detection hole 15, and several detection ports at corresponding positions are connected to the detection hole 15 in sequence to facilitate detection.

[0047] The rotary injection mechanism 7 includes a rotary seat 21 and a second drive motor 22. The second drive motor 22 is fixed on the mounting frame 10. A drive gear 23 is fixed below the output shaft of the second drive motor 22. The rotary seat 21 is rotatably mounted on the mounting frame 10. A driven gear 24 is fixed on the outer side of the rotary seat 21. Both the driven gear 24 and the drive gear 23 are located below the mounting frame 10. The driven gear 24 meshes with the drive gear 23. An electric push rod 20 is provided at the middle of the upper end of the rotary seat 21. A top plate 19 is fixed on the telescopic end of the electric push rod 20. Several quantitative injection guns 17 are evenly distributed around the circumference on the rotary seat 21. A control plate 18 is provided at the upper end of each quantitative injection gun 17. Several quantitative injection guns 17 are connected to an external multi-channel liquid supply tank through pipes.

[0048] In this embodiment, the output shaft of the second drive motor 22 drives the drive gear 23 to move, the drive gear 23 drives the driven gear 24 to move, the driven gear 24 drives the rotating seat 21 to move, and the rotating seat 21 drives several quantitative injection guns 17 on it to move, so that the quantitative injection gun 17 corresponding to the harmful component to be measured moves above the test tube. Then, the telescopic end of the second electric push rod 20 extends and drives the top plate 19 to move upward. The top plate 19 drives the control plate 18 at the corresponding position to move upward. The control plate 18 moves to control the quantitative injection gun 17 to inject liquid. The external multi-channel liquid supply tank supplies liquid. After injecting a quantitative amount of test liquid, the telescopic end of the second electric push rod 20 returns to the initial position, completing the liquid injection.

[0049] The test tube rack mechanism 5 includes a test tube rack 27, which is fixed to the right side of the top inside the test box 1. An electric push rod 25 is fixed to one side of the test tube rack 27. The telescopic end of the electric push rod 25 extends into the test tube rack 27. A push plate 26 is fixed to the telescopic end of the electric push rod 25. The push plate 26 is slidably disposed inside the test tube rack 27. A fixing frame 29 is fixed to the other side of the test tube rack 27. An electric lead screw 28 is provided on the inner side of the fixing frame 29. An electric gripper 37 is provided on the lead screw slide of the electric lead screw 28. The electric gripper 37 is directly opposite the test tube rack 27.

[0050] In this embodiment, the staff replenishes test tubes to the test tube rack 27 periodically. When replenishing test tubes to the test tube holder 14, the telescopic end of the electric push rod 25 extends to push the push plate 26. The push plate 26 pushes several test tubes to slide on the test tube rack 27, pushing out the test tube at the front. At this time, the electric gripper 37 is facing the test tube rack 27, and the test tube at the front slides from the test tube rack 27 into the space between the two grippers of the electric gripper 37. Then, the electric gripper 37 holds the test tube at the front and moves to the test tube holder 14 above the test tube slot to be replenished under the drive of the electric screw 28, and places the test tube at the front in the corresponding test tube slot.

[0051] The moving mechanism 3 includes an arc-shaped slide rail 30, which is fixed inside the left side of the detection box 1. A rotating rod 32 is slidably mounted on the arc-shaped slide rail 30. An electric gripper 33 is rotatably mounted on the rotating rod 32. A drive motor 34 is mounted at the end of the electric gripper 33. A drive motor 31 is fixed below the arc-shaped slide rail 30. The output shaft of the drive motor 31 is connected to the rotating rod 32 for transmission.

[0052] In this embodiment, the output shaft of the drive motor 31 drives the rotating rod 32 to slide on the arc-shaped slide rail 30. The rotating rod 32 drives the electric gripper 33 to move. When the test begins, the electric gripper 33 moves to the top of the support plate. After the support plate returns to its initial position, the electric gripper 33 clamps the extraction mechanism on it and moves the extraction mechanism to the top of a test tube slot in the test tube holder 14. Then, the output shaft of the drive motor 34 drives the electric gripper 33 to flip, thereby causing the extraction mechanism to flip and allowing the extracted liquid in the extraction mechanism to flow into the test tube at the corresponding position.

[0053] The extraction mechanism includes an extraction cup 35 and a filter funnel 36. The filter funnel 36 is fitted on the upper end of the extraction cup 35. Both the upper end of the extraction cup 35 and the lower end of the filter funnel 36 are provided with rims. Filter paper is provided inside the filter funnel 36.

[0054] In this embodiment, when determining harmful components in food, the operator places the crushed food particles to be extracted into the extraction cup 35, then adds a measured amount of extractant into the extraction cup 35, and after shaking and extraction, places the filter funnel 36 over the upper end of the extraction cup 35. The upper end of the extraction cup 35 and the lower end of the filter funnel 36 are in contact with the sleeve edge, which facilitates clamping and flipping. During flipping, the extraction mixture flows from the filter funnel 36 into the test tube at the corresponding position, and the filter paper is used to filter the extraction mixture.

[0055] The working principle of this utility model is as follows: When determining the harmful components of food, the staff places the crushed food particles to be extracted into the extraction cup 35, then adds a certain amount of extraction liquid into the extraction cup 35, and after shaking and extraction, the filter funnel 36 is fitted onto the upper end of the extraction cup 35, with the upper end of the extraction cup 35 and the lower end of the filter funnel 36 in contact. The fitted edge is easy to clamp and flip. After completion, the extraction mechanism is placed in the detection box 1.

[0056] Then, the harmful component to be measured is selected, and the detection is started. The output shaft of drive motor 31 drives the rotating rod 32 to slide on the arc-shaped slide rail 30. The rotating rod 32 drives the electric gripper 33 to move. When the detection begins, the electric gripper 33 moves above the support plate. After the support plate returns to its initial position, the electric gripper 33 clamps the extraction mechanism on it and moves the extraction mechanism above the test tube rotating mechanism 4. Then, the extraction mechanism is rotated and moved to the test tube slot above one of the test tube slots of the test tube holder 14. Then, the output shaft of drive motor 34 drives the electric gripper 33 to flip, thereby causing the extraction mechanism to flip, so that the extracted liquid in the extraction mechanism flows into the corresponding test tube, completing the extraction work. Then, the moving mechanism 3 drives the extraction mechanism to flip to avoid contamination of the inside and transports the extraction mechanism from the detection box 1 to the waste box 2 to complete the waste recycling. After the extraction is completed, the output shaft of drive motor 16 drives the test tube holder 14 to rotate on the fixed seat, thereby causing the several test tube slots on it to move. The test tube rotating mechanism 4 drives the test tubes on it to rotate and move. Below the rotary injection mechanism 7, the rotary injection mechanism 7, according to the selected movement, drives the output shaft of the drive motor 22 to drive the drive gear 23 to move, the drive gear 23 drives the driven gear 24 to move, the driven gear 24 drives the rotating seat 21 to move, and the rotating seat 21 drives several quantitative injection guns 17 on it to move, so that the quantitative injection gun 17 corresponding to the selected harmful component to be measured moves above the test tube. Then, the telescopic end of the electric push rod 20 extends and drives the top plate 19 to move upward. The top plate 19 drives the control plate 18 at the corresponding position to move upward. The control plate 18 moves to control the quantitative injection gun 17 to inject liquid. The telescopic end of the electric push rod 20 returns to the initial position, completing the injection, so that the detection liquid of the corresponding harmful component is injected into the test tube. After mixing, it is left to stand for a period of time. Then, the test tube rotation mechanism 4 drives the test tube to move to the spectrometer 6. The spectrometer 6 performs spectral analysis on the test tube to determine the harmful component and its content. After the measurement is completed, the test tube rotation mechanism 4 drives the tested test tube to move, and then transports the test tube to the waste box 2 to complete the detection.

[0057] Staff regularly replenish test tubes to the test tube rack 27. When replenishing test tubes to the test tube holder 14, the telescopic end of the electric push rod 25 extends to push the push plate 26. The push plate 26 pushes several test tubes to slide on the test tube rack 27, pushing out the test tube at the front. At this time, the electric gripper 37 is facing the test tube rack 27, and the test tube at the front slides from the test tube rack 27 into the space between the two grippers of the electric gripper 37. Then, the electric gripper 37 holds the test tube at the front and moves to the test tube holder 14 above the test tube slot to be replenished under the drive of the electric screw 28, and places the test tube at the front in the corresponding test tube slot.

[0058] In summary, by placing the extraction mechanism in the detection box 1 and cooperating with the moving mechanism 3 to clamp, transport, and flip the extraction mechanism, the extraction mixture in the extraction mechanism flows stably into the test tube, thus achieving stable transport.

[0059] The test tube rotating mechanism 4 rotates and transports several test tubes, which, in conjunction with the detection box 1, realize the input, transfer and output of test tubes, ensuring the cleanliness of the internal environment. In conjunction with the rotating liquid injection mechanism 7, it can determine a variety of harmful components according to the selection.

[0060] The test tube is transferred by the test tube rotating mechanism 4 and cooperates with the spectrometer 6 for rapid detection, which is efficient and convenient.

[0061] The test tube rack mechanism 5 works in conjunction with the test tube rotating mechanism 4 to automatically replenish missing test tubes, resulting in a high degree of automation.

[0062] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A safety detector for determining toxic and harmful components in food, comprising a detection chamber (1), characterized in that, The test tube rotating mechanism (4) is located in the middle of the test box (1). The test tube rack mechanism (5) and the rotary injection mechanism (7) are located at the top of the test box (1). The test tube rack mechanism (5) is located above the right side of the test tube rotating mechanism (4). The rotary injection mechanism (7) is located above the rear side of the test tube rotating mechanism (4). The rotary injection mechanism (7) is connected to the external multi-channel liquid supply box through a pipe. The spectrometer (6) is located at the bottom of the test box (1). The spectrometer (6) is located behind the test tube rotating mechanism (4) and is connected to the test tube rotating mechanism (4). The moving mechanism (3) is located on the left side of the test box (1). The moving mechanism (3) is located above the left side of the test tube rotating mechanism (4). The positions of the moving mechanism (3), the test tube rack mechanism (5), the rotary injection mechanism (7) and the spectrometer (6) are arranged in a circle. The waste box (2) is located below the test box (1). During operation, the test box (1) is equipped with several extraction mechanisms.

2. The safety detector for determining toxic and harmful components in food according to claim 1, characterized in that, The test box (1) has an avoidance hole and a test tube discharge hole (11) at the middle of the bottom. The test tube discharge hole (11) is located to the right of the avoidance hole. The test box (1) has a waste hole (12) and an electric push rod (13) at the bottom. The electric push rod (13) has a support plate at its telescopic end. The test box (1) has a mounting bracket (10) fixed on the left side of the top. The test box (1) has a discharge hole (9) at the front of the top. The position of the discharge hole (9) matches the position of the electric push rod (13). The test box (1) has an operation screen (8) at the top. The operation screen (8) is electrically connected to the spectrometer (6), the test tube rotation mechanism (4), the moving mechanism (3), the test tube rack mechanism (5), and the rotating liquid injection mechanism (7).

3. A safety detector for determining toxic and harmful components in food according to claim 2, characterized in that, The test tube rotating mechanism (4) includes a fixed base and a drive motor (16). The drive motor (16) is fixed at the middle position below the test box (1). The fixed base is fixed at the middle position of the bottom inside the test box (1). A test hole (15) is opened on the outside of the fixed base. A test tube seat (14) is rotatably provided inside the fixed base. The output shaft of the drive motor (16) is connected to the test tube seat (14) for transmission. A number of test tube grooves are evenly distributed around the circumference on the test tube seat (14). A number of test ports are evenly distributed around the circumference inside the test tube seat (14). The number and position of the test ports match the test tube grooves. The test ports are all located on the outside of the corresponding test tube grooves. The test ports are connected to the inside of the corresponding test tube grooves. When the test tube seat (14) rotates, the test ports are connected to the test holes (15) in sequence.

4. A safety detector for determining toxic and harmful components in food according to claim 3, characterized in that, The rotary injection mechanism (7) includes a rotary seat (21) and a second drive motor (22). The second drive motor (22) is fixed on the mounting frame (10). A drive gear (23) is fixed below the output shaft of the second drive motor (22). The rotary seat (21) is rotatably mounted on the mounting frame (10). A driven gear (24) is fixed on the outer side of the rotary seat (21). Both the driven gear (24) and the drive gear (23) are located below the mounting frame (10). The driven gear (24) meshes with the drive gear (23). An electric push rod (20) is provided at the middle position of the upper end of the rotary seat (21). A top plate (19) is fixed on the telescopic end of the electric push rod (20). Several quantitative injection guns (17) are evenly distributed around the circumference on the rotary seat (21). A control plate (18) is provided at the upper end of each quantitative injection gun (17). Several quantitative injection guns (17) are connected to an external multi-channel liquid supply tank through pipes.

5. A safety detector for determining toxic and harmful components in food according to claim 4, characterized in that, The test tube rack mechanism (5) includes a test tube rack (27), which is fixed to the right side of the top of the test box (1). An electric push rod three (25) is fixed on one side of the test tube rack (27). The telescopic end of the electric push rod three (25) extends into the test tube rack (27). A push plate (26) is fixed on the telescopic end of the electric push rod three (25). The push plate (26) is slidably disposed inside the test tube rack (27). A fixing frame (29) is fixed on the other side of the test tube rack (27). An electric lead screw (28) is provided on the inner side of the fixing frame (29). An electric gripper two (37) is provided on the lead screw slide of the electric lead screw (28). The electric gripper two (37) is facing the test tube rack (27).

6. A safety detector for determining toxic and harmful components in food according to claim 5, characterized in that, The moving mechanism (3) includes an arc-shaped slide rail (30), which is fixed inside the left side of the detection box (1). A rotating rod (32) is slidably mounted on the arc-shaped slide rail (30). An electric gripper (33) is rotatably mounted on the rotating rod (32). A drive motor (34) is mounted at the end of the electric gripper (33). A drive motor (31) is fixed below the arc-shaped slide rail (30). The output shaft of the drive motor (31) is connected to the rotating rod (32) in a transmission connection.

7. A safety detector for determining toxic and harmful components in food according to claim 6, characterized in that, The extraction mechanism includes an extraction cup (35) and a filter funnel (36). The filter funnel (36) is fitted on the upper end of the extraction cup (35). Both the upper end of the extraction cup (35) and the lower end of the filter funnel (36) are provided with a rim. Filter paper is provided inside the filter funnel (36).

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