Food safety detection equipment

Abstract

The utility model discloses food safety detection equipment. A sample mixing device is provided with a first containing part; the detection device is provided with a second containing part, a third containing part, a first image acquisition device corresponding to the second containing part and a second image acquisition device corresponding to the third containing part; the reagent adding device is used for adding a reagent into the sample container positioned on the first containing part to form a first sample and adding a reagent into the detection container positioned on the second containing part to form a second sample; the extraction mechanism comprises a manipulator and a pipette, and the manipulator is used for driving the pipette to extract a first sample in the sample container and conveying the first sample into the detection container located in the second containing part or the colloidal gold detection card located in the third containing part, or extracting a second sample in the detection container and conveying the second sample into the colloidal gold detection card located in the third containing part; and the colloidal gold is conveyed into the colloidal gold detection card located in the third containing part. The device disclosed by the utility model has the advantages of high automation degree, good soaking and purifying effects, high detection precision and integration of multiple detection means.

Description

TECHNICAL FIELD

[0001] The utility model relates to food safety detection technical field, concretely relates to a food safety detection equipment. BACKGROUND

[0002] With the acceleration of globalization and the continuous extension of food production chain, the complexity of food supply chain is increasing, and food safety problem has become a global challenge, and its severity cannot be underestimated. It is not only directly related to the life safety and health of each consumer, but also closely related to the stability of society and the sustained growth of economy. Under this background, food detection as the key link to ensure food safety, its importance is increasingly prominent, and becomes a strong defense line to protect public health and social peace.

[0003] In the process of food safety detection, it is necessary to systematize and scientifically process a large number of food samples. The core step of this process includes mixing the sample and the soaking liquid in the sample container. In order to ensure that the sample to be tested can be completely and uniformly dissolved in the soaking liquid, the detection personnel usually uses a special stirring rod to stir the mixed system carefully and uniformly, so as to promote the full integration of the sample and the soaking liquid, and lay a solid foundation for the subsequent detection work.

[0004] After completing the full reaction and dissolution of the preset time period, the detection personnel will use the pipette 42 to accurately extract a certain amount of sample from the mixed system, and then carefully drop it into the special detection container. Inside the detection container, the extracted sample will further combine with a series of chemical reagents, which can react with specific components in the sample to form a detection liquid for final analysis. Next, with the help of advanced detection technology and instrument equipment, the detection personnel can monitor and accurately analyze the subtle chemical changes in the detection liquid in real time, so as to accurately evaluate the safety index of the food sample and ensure that every food meets the safety standard.

[0005] As Figure 21As shown, the pipette 42 is a precise liquid handling tool, which generally comprises a body 421, a piston rod 422 mounted in the body, and a tip 423 fitted to the end of the body. The piston rod and the body together form a piston system, which enables the pipette to aspirate and dispense liquid by moving the piston rod. When the top end of the piston rod is pushed, the piston moves downward, thereby expelling the gas in the body and creating a negative pressure. This negative pressure state causes the liquid outside the tip to be sucked into the tip. When the hand is released, the piston rod will return to its original position under the action of the return spring, and the liquid in the tip will be retained in the tip or discharged into other containers as needed. One of the remarkable features of the pipette is that it can accurately control the amount of liquid aspirated by controlling the stroke of the piston rod relative to the body. This control mechanism makes the pipette widely used in scientific research, medicine, biological experiments and other fields, especially in situations where precise measurement of micro-liquid is required. The pipette is usually also provided with an ejection button 424 for the tip 423 to be detached from the end of the body, allowing the user to easily and quickly eject the used tip without the need for additional tools or force, thereby simplifying the replacement process of the tip.

[0006] However, although the existing food safety detection equipment has achieved certain achievements, there are still some technical defects that cannot be ignored:

[0007] (1) The soaking and purification effect is not good, which is the key factor restricting the improvement of detection precision. In the current food safety detection process, soaking and purification are two crucial links. However, the existing soaking method often relies only on simple stirring to promote the mixing of the sample to be tested and the soaking liquid. This single mixing method cannot ensure that the target component is effectively and cleanly separated. On the one hand, although stirring can promote the contact between the sample and the soaking liquid, due to the mixing efficiency and uniformity, many target components may still be wrapped inside the sample or tightly combined with other impurities, making it difficult to be completely released and separated. On the other hand, since the mixed liquid often contains some insoluble components, these components may be extracted by the pipette at the same time as the target component during the stirring process, thereby introducing additional impurity interference, seriously affecting the accuracy of subsequent detection.

[0008] (2) The detection means is single, and it is difficult to cope with the increasingly complex food safety problems. With the vigorous development of food industry and the continuous increase of food types, food safety problems show the trend of increasing complexity and diversification. Each harmful substance needs a specific detection method to accurately identify and quantify. However, the existing food safety detection equipment often has single detection means, and lacks sufficient flexibility and adaptability. In order to complete the comprehensive detection of different types of food, the detection agency often needs to configure multiple detection equipment, which not only greatly increases the detection cost, but also reduces the detection efficiency, making the detection process cumbersome and long. SUMMARY

[0009] The technical problem to be solved by the utility model is to provide a food safety detection equipment with high automation, good soaking and purification effect, high detection precision and multiple detection means.

[0010] In order to solve the above technical problem, the technical scheme provided by the utility model is a food safety detection equipment, which at least comprises:

[0011] The sample mixing device is provided with a plurality of first holding parts for accommodating sample containers;

[0012] The detection device is provided with a plurality of second holding parts for accommodating detection containers, at least one third holding part for accommodating colloidal gold detection cards, at least one first image acquisition device matched with the second holding part for acquiring the second sample image in the detection container, and a second image acquisition device matched with the third holding part for acquiring the colloidal gold detection card image;

[0013] The reagent adding device corresponding to the first holding part of the sample mixing device and the second holding part of the detection device is used for adding reagents to the sample container for storing the sample to be tested in the first holding part to form a first sample, and adding reagents to the detection container for storing the extraction liquid in the second holding part to form a second sample;

[0014] The extraction mechanism comprises a mechanical hand and a pipette gun installed at the free end of the mechanical hand. The mechanical hand is used to drive the pipette gun to extract the first sample in the sample container in the first holding part, transport the extraction liquid to the detection container in the second holding part or the colloidal gold detection card in the third holding part, and drive the pipette gun to extract the second sample in the second holding part, and transport the extraction liquid to the colloidal gold detection card in the third holding part;

[0015] The first holding part, the second holding part and the third holding part are located in the stroke range of the free end of the mechanical hand.

[0016] The food safety detection equipment has the following beneficial effects compared with the prior art:

[0017] (1) The food safety detection equipment has the following beneficial effects compared with the prior art: The sample mixing device is provided with a plurality of first containing portions for containing sample containers; the detection device is provided with a plurality of second containing portions for containing detection containers, at least one third containing portion for containing a colloidal gold detection card, at least one first image acquisition device matched with the second containing portion for acquiring an image of a detection liquid located in the detection container, and a second image acquisition device matched with the third containing portion for acquiring an image of the colloidal gold detection card. With such a structure design, the detection device is equipped with multiple containing portions, which can detect the detection liquid in the traditional detection container through the first image acquisition device, and can detect the colloidal gold detection card added with the extraction liquid through the second image acquisition device, so that the detection method is diversified, different types of colloidal gold detection cards and chemical reagents can be flexibly replaced, accurate detection of multiple harmful substances is realized, various complex detection requirements are fully met, and the flexibility and adaptability of the food safety detection equipment are significantly improved. The extraction mechanism includes a mechanical hand and a pipette gun installed at the free end of the mechanical hand, the mechanical hand is used for driving the pipette gun to extract the first sample located in the sample container of the first containing portion, and transport the extraction liquid into the detection container located in the second containing portion or the colloidal gold detection card located in the third containing portion, and extract the second sample located in the detection container of the second containing portion, and transport the extraction liquid into the colloidal gold detection card of the third containing portion. The cooperation of the mechanical hand and the pipette gun realizes the rapid and accurate extraction and transmission of the extraction liquid, which not only reduces the sample processing time, but also avoids the pollution or loss of the sample in the transmission process, and ensures the accuracy of the detection result.

[0018] The food safety detection equipment has the first feeding mechanism of the detection device, which comprises a first rotating disc, a first fixed plate, a first driving mechanism, a moving plate, a chute and a second driving mechanism, and can load different colloidal gold detection cards, such as enrofloxacin detection cards, nitenpyram detection cards and aflatoxin detection cards, on the first rotating disc, so that the accurate detection of various harmful substances is realized, the application range is greatly widened, and the complex and changeable food safety detection scene is met.

[0019] The food safety detection equipment has the first feeding mechanism of the detection device, which comprises a first rotating disc, a first fixed plate, a first driving mechanism, a moving plate, a chute and a second driving mechanism, and can load different colloidal gold detection cards, such as enrofloxacin detection cards, nitenpyram detection cards and aflatoxin detection cards, on the first rotating disc, so that the accurate detection of various harmful substances is realized, the application range is greatly widened, and the complex and changeable food safety detection scene is met.

[0020] (4) The food safety detection equipment has at least one first vibrating device matched with the groove three-phase and at least one first weighing device matched with the groove three-phase, which are installed on the first mounting plate. The second mounting plate is provided with at least one second vibrating device matched with the groove five-phase and at least one second weighing device matched with the groove five-phase. The first weighing device and the second weighing device can accurately measure and monitor the quality of the reagent added in the detection container and the sample container, ensure the accuracy and repeatability of the experimental conditions, and improve the reliability of the detection result. The application of the first vibrating device and the second vibrating device can fully mix the substances in the detection container and the sample container, effectively break the interface between the substances, promote the uniform distribution between the components, improve the purification effect, and improve the detection accuracy.

[0021] The centrifugal mechanism includes a rotating frame and a seventh driving mechanism for driving the rotating frame to rotate, and the rotating frame is provided with a plurality of fourth containing parts for containing sample containers around the rotating center axis. The centrifugal force generated by high-speed rotation can further promote the uniform mixing of the sample to be tested and the reagent, and help to separate the unnecessary impurities or precipitates. On the one hand, it helps to form a specific physical state and purity of the mixture, and on the other hand, the centrifugal process also helps to improve the uniformity of the first sample, which is beneficial to improve the subsequent purification effect. The second conveying mechanism is used for transferring the sample container between the sample mixing device and the centrifugal mechanism. The existence of the second conveying mechanism realizes the automatic transfer of the sample container between the sample mixing device and the centrifugal mechanism, reduces the intervention of manual operation, and improves the automation degree of the whole detection process. This automation not only improves the work efficiency, but also reduces the possibility of human error, and ensures the accuracy and consistency of the detection result. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a whole structure schematic view of a food safety detection equipment embodiment of the utility model;

[0023] Figure 2 It is another angle schematic view of a whole structure of a food safety detection equipment embodiment of the utility model;

[0024] Figure 3 It is a detection device structure schematic view of a food safety detection equipment embodiment of the utility model;

[0025] Figure 4 It is a first rotating disc structure schematic view of a food safety detection equipment embodiment of the utility model;

[0026] Figure 5 It is a first fixed plate structure schematic view of a food safety detection equipment embodiment of the utility model;

[0027] Figure 6 It is the mobile plate, the chute and the dismounting mechanism installation structure schematic view of a kind of food safety detection equipment embodiment of the utility model;

[0028] Figure 7 It is the chute structure schematic view of a kind of food safety detection equipment embodiment of the utility model;

[0029] Figure 8 It is the mobile plate structure schematic view of a kind of food safety detection equipment embodiment of the utility model;

[0030] Figure 9 It is the structure schematic view of the side wall of a kind of food safety detection equipment embodiment of the utility model that box removes part;

[0031] Figure 10 It is the installation structure schematic view of the first mounting plate and the second carousel of a kind of food safety detection equipment embodiment of the utility model;

[0032] Figure 11 It is the structure schematic view of the extraction mechanism of a kind of food safety detection equipment embodiment of the utility model;

[0033] Figure 12 It is the installation structure schematic view of the mechanical hand and the pipette of a kind of food safety detection equipment embodiment of the utility model;

[0034] Figure 13 It is the structure schematic view of the first dog of a kind of food safety detection equipment embodiment of the utility model;

[0035] Figure 14 It is the sample mixing device structure schematic view of a kind of food safety detection equipment embodiment of the utility model;

[0036] Figure 15 It is the third feed mechanism and box installation structure schematic view of a kind of food safety detection equipment embodiment of the utility model;

[0037] Figure 16 It is the fourth carousel structure schematic view of a kind of food safety detection equipment embodiment of the utility model;

[0038] Figure 17 It is the second fixed plate structure schematic view of a kind of food safety detection equipment embodiment of the utility model;

[0039] Figure 18 It is the first material pipe structure schematic view of a kind of food safety detection equipment embodiment of the utility model;

[0040] Figure 19A third turntable structure schematic view of a food safety detection equipment embodiment of the utility model;

[0041] Figure 20 A centrifugal mechanism structure schematic view of a food safety detection equipment embodiment of the utility model;

[0042] Figure 21 The structure schematic view of prior art pipette.

[0043] Mark explanation:

[0044] 1-sample mixing device;11-first holding part;111-fifth slot hole;12-third turntable;13-sixth drive mechanism;

[0045] 2-detection device;21-first image acquisition device;22-second image acquisition device;23-first feeding mechanism;231-first turntable;2311-first material box;2312-first slot hole;232-first fixed plate;2321-first groove;2322-first support;233-first drive mechanism;234-moving plate;2341-second slot hole;2342-stop block;235-slideway;2351-third holding part;23511-positioning slot;2352-sliding part;2353-bottom wall;2354-side wall;2355-clearance slot;2356-first channel;2357-falling opening;236-second drive mechanism;24-unsealing mechanism;241-mounting frame;242-unsealing knife;243-ninth drive mechanism;25-second turntable;251-third slot hole;252-second holding part;26-third drive mechanism;

[0046] 3-reagent adding device;

[0047] 4-extraction mechanism;41-robot;411-mounting seat;412-sliding plate;4121-first positioning sensor;413-fourth drive mechanism;414-first clamping jaw;4141-mounting part;4142-first positioning part;4143-first pressing part;4144-second pressing part;415-fifth drive mechanism;42-pipette;421-body;422-piston rod;423-suction head;424-eject button;43-second feeding mechanism;431-fourth turntable;4311-second material box;4312-seventh slot hole;432-second fixed plate;433-tenth drive mechanism;434-first material pipe;4341-feeding port;4342-discharging port;435-first positioning mechanism;4351-first positioning plate;4352-eleventh drive mechanism;436-second material pipe;4361-second groove;437-second positioning mechanism;4371-second positioning plate;4372-twelfth drive mechanism;44-first conveying mechanism;

[0048] 5-Centrifugal mechanism; 51-Rotating frame; 511-Fourth holding section; 512-First positioning pad; 513-Positioning screw; 514-Second positioning pad; 52-Seventh drive mechanism; 53-Third positioning mechanism; 531-Electromagnet; 532-Thirteenth drive mechanism;

[0049] 6-Second transport mechanism;

[0050] 7-Box body; 71-First mounting plate; 711-First vibration device; 712-First weighing device; 713-Slot four; 72-Second mounting plate; 721-Second vibration device; 722-Second weighing device; 73-Frame; 74-Side plate; 75-Container window; 76-Third mounting plate; 77-Sampling window;

[0051] 8-Third feeding mechanism; 81-Material box; 811-Second channel; 8111-Slot six; 8112-Baffle; 82-Eighth drive mechanism;

[0052] 9-Colloidal Gold Detection Card;

[0053] 101 - Sampling facility. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0055] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0057] This embodiment provides a food safety testing device, such as... Figures 1-2As shown, the device includes at least a sample mixing device 1, a detection device 2, a reagent adding device 3, and an extraction mechanism 4. The embodiment shown integrates multiple functional modules such as sample mixing, detection, reagent adding, and extraction, realizing a fully automated process from sample processing to result output. This not only improves detection efficiency but also reduces errors and interventions from manual operation, ensuring the accuracy and reliability of the detection results.

[0058] The sample mixing device is provided with several first holding sections 11 for accommodating sample containers; the detection device is provided with several second holding sections 252 for accommodating detection containers, at least one third holding section 2351 for accommodating colloidal gold test cards 9, at least one first image acquisition device 21 matched with the second holding section for acquiring images of the detection liquid located in the detection container, and a second image acquisition device 22 matched with the third holding section for acquiring images of the colloidal gold test cards. With this structural design, the detection device is equipped with multiple holding sections, which can detect the detection liquid in a traditional detection container using the first image acquisition device, or detect the colloidal gold test card with added extract using the second image acquisition device. The detection methods are diversified. By flexibly changing different types of colloidal gold test cards and chemical reagents, the accurate detection of a variety of harmful substances can be achieved, thereby fully meeting various complex and ever-changing detection needs and significantly improving the flexibility and adaptability of food safety testing equipment.

[0059] The reagent adding device is correspondingly arranged with the first holding section 11 of the sample mixing device 1 and the second holding section 252 of the detection device 2. It is used to add reagents to the sample container located on the first holding section for storing the sample to be tested to form a first sample, and to add reagents to the detection container located on the second holding section for storing the extract to form a second sample. The extraction mechanism includes a robotic arm 41 and a pipette 42 installed on the free end of the robotic arm. The robotic arm is used to drive the pipette to extract the first sample located in the sample container of the first holding section 11 and transport the extract to the detection container located in the second holding section or the colloidal gold detection card located in the third holding section, and to extract the second sample located in the second holding section and transport the extract to the colloidal gold detection card located in the third holding section. The first holding section, the second holding section, and the third holding section are located within the stroke range of the free end of the robotic arm. The cooperation of the robotic arm and the pipette enables rapid and accurate extraction and transfer of the extract, which not only reduces the sample processing time, but also avoids the contamination or loss of the sample during the transfer process and ensures the accuracy of the detection results.

[0060] like Figure 3As shown, the testing device 2 includes a first feeding mechanism 23 for loading and supplying colloidal gold test cards. The first feeding mechanism includes a first turntable 231, a first fixed plate 232, a first driving mechanism 233, a moving plate 234, a slide 235, and a second driving mechanism 236.

[0061] like Figure 4 As shown, the first turntable 231 is provided with a plurality of first material boxes 2311 at intervals along the circumference for holding colloidal gold test cards, and slots 2312 corresponding to each of the first material boxes for receiving the colloidal gold test cards as they fall one by one. Different colloidal gold test cards, such as enrofloxacin test cards, thiamethoxam test cards, and aflatoxin test cards, can be loaded into different first material boxes on the first turntable, enabling accurate detection of a variety of harmful substances, greatly expanding its application range and meeting the needs of complex and ever-changing food safety testing scenarios.

[0062] like Figure 5 As shown, the first fixing plate 232 is located below the first turntable 231 and is provided with a groove 2321 extending inward from the edge and matching the slot. The bottom of the first fixing plate is provided with a plurality of first brackets 2322 for installation.

[0063] In this embodiment, the first fixing plate 232 is fixedly connected to the first mounting plate 71 through the first bracket 2322.

[0064] The output end of the first drive mechanism 233 is fixedly connected to the first turntable and is used to drive the first turntable to rotate relative to the first fixed plate.

[0065] like Figure 3 , Figure 6 and Figure 8 As shown, the movable plate 234 is adapted to the groove 2321, and the end away from the rotation center axis of the first turntable 231 is provided with a slot 2341 for accommodating the passage of the colloidal gold test card.

[0066] like Figure 7 As shown, the slide 235 is installed below the movable plate. A third holding portion 2351 is provided at one end of the slide 235 away from the rotation center axis of the first turntable, and a sliding portion 2352 matching the bottom of the second slot is provided at the top of the other end. The movable plate has a first state where the second slot is located within the first groove and is connected to the first slot, and a second state where the second slot is located outside the first groove, offset from the first slot, and connected to the third holding portion. The output end of the second drive mechanism 236 is fixedly connected to the movable plate, and the second drive mechanism is used to drive the movable plate to switch between the first and second states.

[0067] When the moving plate switches from the second state to the first state, the second drive mechanism drives the moving plate to move along the third holding part towards the first slot until the second slot connects with the first slot. The colloidal gold test card passes through the first slot and enters the second slot, and its bottom contacts the sliding part.

[0068] When the moving plate switches from the first state to the second state, the second drive mechanism drives the moving plate to move along slot one towards the third holding part. Through slot two, the colloidal gold test card slides along the sliding part until slot two connects with the third holding part, and the colloidal gold test card passes through slot two into the third holding part. This achieves the sequential and orderly supply of colloidal gold test cards, not only avoiding waste and confusion of test cards but also greatly improving detection efficiency and accuracy.

[0069] like Figure 7 As shown, in this embodiment, the chute 235 includes a bottom wall 2353 and side walls 2354 extending upward from the two sides of the bottom. The top of the two side walls at the end of the chute away from the third holding part extends inward to form a gap groove 2355 and a sliding part 2352. A first channel 2356 is formed between the sliding part and the bottom wall, which is connected to the third holding part and is used to accommodate the passage of the colloidal gold test card. A drop hole 2357 is provided at one end of the sliding part on the bottom wall.

[0070] like Figure 8 As shown, in this embodiment, the movable plate protrudes downward at the edge of the slot 2341 away from the rotation center axis of the first turntable to form a stop 2342 that matches the gap slot 2355.

[0071] When the moving plate switches from the second state to the first state, the second drive mechanism drives the moving plate to move along the third holding part towards the slot one, and through the stop block, the colloidal gold detection card located in the third holding part slides along the first channel and passes through the drop hole.

[0072] Considering that colloidal gold test strips are typically individually sealed in thin film to maintain their sensitivity and accuracy, efficient and accurate unsealing of each test strip is crucial during use. For example... Figure 3 and Figure 6As shown, the detection device 2 also includes a desealing mechanism 24, which includes a mounting bracket 241 with its free end extending above the third holding section, a desealing blade 242 mounted on the free end of the mounting bracket, and a ninth driving mechanism 243. The desealing blade has a sixth state where the blade tip is above the third holding section, and a seventh state where the blade tip extends into the third holding section and abuts against the colloidal gold test card. The ninth driving mechanism is used to drive the desealing blade to switch between the sixth and seventh states. The embodiment shown in this utility model fully considers the characteristic that colloidal gold test cards are usually individually sealed with thin films to maintain their sensitivity and accuracy. Therefore, efficient and accurate desealing of each test card is particularly important during use. The desealing mechanism of this embodiment is designed to solve this problem. On the one hand, by driving the desealing blade to switch between the sixth and seventh states through the ninth driving mechanism, automatic desealing of the colloidal gold test card is realized, which greatly improves the detection efficiency; on the other hand, through the automatic and accurate desealing process, the integrity and cleanliness of the colloidal gold test card before use are ensured, thereby guaranteeing the accuracy of the detection results.

[0073] In this embodiment, the second image acquisition device 22 of the detection device 2 is mounted on the mounting bracket 241.

[0074] like Figure 9 As shown, the food safety testing equipment in this embodiment also includes a housing 7, a first mounting plate 71 installed inside the housing 7, and a second mounting plate 72 installed below the first mounting plate.

[0075] like Figure 1 and Figure 10 As shown, the detection device 2 also includes a second turntable 25 located above the first mounting plate, and a third drive mechanism 26 for driving the second turntable to rotate relative to the first mounting plate. The second turntable is provided with a plurality of slots 251 spaced around its rotation center axis. The slots 251 and the first mounting plate form a second holding part 252. The second drive mechanism is installed below the first mounting plate, and its output end passes through the first mounting plate and is fixedly connected to the second turntable.

[0076] The first mounting plate 71 is equipped with at least one first vibration device 711 adapted to the three-phase slot and at least one first weighing device 712 adapted to the three-phase slot. The first weighing device enables precise measurement and monitoring of the mass of the sample and reagent within the sample container. This precision ensures the accuracy and repeatability of the experimental conditions, thereby improving the reliability of the test results. The first vibration device ensures thorough mixing of the sample and reagent within the sample container, effectively breaking down the interfaces between substances, promoting uniform distribution of components, improving purification efficiency, and thus enhancing the accuracy of the detection.

[0077] like Figure 11 andFigure 12 As shown, the robotic arm of the extraction mechanism 4 includes:

[0078] Mounting base 411, the mounting base is located above the third holding part 2351;

[0079] The sliding plate 412 is fixedly connected to the pipette 42 and slidably connected to the mounting base along the moving direction of the pipette piston rod. A plurality of first positioning sensors 4121 are arranged at intervals along the sliding direction of the sliding plate.

[0080] The fourth drive mechanism 413 has its output end fixedly connected to the sliding plate and is used to drive the sliding plate to slide relative to the mounting base, thereby moving the pipette towards the third container.

[0081] First chuck 414, such as Figure 13 As shown, the first claw includes a mounting part 4141 that is slidably connected to the sliding plate. The sliding direction of the mounting part is parallel to the sliding direction of the sliding plate. One side of the mounting part extends outward to form a first positioning part 4142 that is adapted to the first positioning sensor. The other side is provided with a first pressing part 4143 that matches the top of the piston rod of the pipette 42, and a second pressing part 4144 that matches the eject button of the pipette.

[0082] The first claw has:

[0083] The first pressing part releases the top of the pipette piston rod, and the second pressing part releases the third state of the pipette ejection button;

[0084] The first pressing part abuts against the top of the pipette piston rod, and the second pressing part releases the fourth state of the pipette ejection button;

[0085] The first pressing part abuts against the top of the pipette piston rod, and the second pressing part abuts against the fifth state of the pipette eject button;

[0086] The fifth drive mechanism 415 has its output end fixedly connected to the first claw, and is used to drive the first claw to slide relative to the sliding plate, thereby allowing the first claw to switch between the third state, the fourth state and the fifth state.

[0087] like Figure 6 and Figure 10 As shown, in this embodiment, the third holding part 2351 is located above the second turntable 25 and matches the position of the second holding part 232. The third holding part is provided with a relief groove 23511 that matches the pipette tip 42.

[0088] like Figure 1 and Figure 11As shown, the extraction mechanism 4 also includes a second feeding mechanism 43 for loading the pipette tip 42 and a first transport mechanism 44 for transferring the pipette tip from the second feeding mechanism to the pipette. The outlet of the second feeding mechanism 43 and the end of the pipette body 42 are located within the travel range of the free end of the first transport mechanism.

[0089] like Figure 11 As shown, the second feeding mechanism 43 includes a fourth turntable 431, a second fixed plate 432, a tenth driving mechanism 433, a first material pipe 434, and a first positioning mechanism 435.

[0090] like Figure 16 As shown, the fourth turntable is provided with a plurality of second material boxes 4311 at intervals along the circumferential direction for accommodating pipette tips 42, and slots 4312 corresponding to the second material boxes for accommodating the pipette tips falling one by one.

[0091] like Figure 17 As shown, the second fixed plate 432 is located below the fourth turntable and is provided with a slot 8 4321 that matches the slot 7. In this embodiment, a second bracket 4322 is provided at the bottom of the second fixed plate. The output end of the tenth drive mechanism 433 is fixedly connected to the fourth turntable and is used to drive the fourth turntable to rotate relative to the second fixed plate.

[0092] The first material pipe is located below the second fixed plate, such as Figure 18 As shown, the first material pipe is provided with an inlet 4341 and an outlet 4342 that communicate with the slot eight. The first positioning mechanism includes a first positioning plate 4351 that matches the outlet of the first material pipe and an eleventh driving mechanism 4352. The first positioning plate has an eighth state in which one end extends into the outlet and a ninth state located outside the outlet. The eleventh driving mechanism is used to drive the first positioning plate to switch between the eighth state and the ninth state.

[0093] In this embodiment, as Figure 11 As shown, the second feeding mechanism 43 also includes a second material pipe 436 and a second positioning mechanism 437. The second material pipe is connected to the first material pipe and has a groove 4361 on its side wall. The second positioning mechanism includes a second positioning plate 4371 adapted to the groove and a twelfth drive mechanism 4372. The second positioning plate has a tenth state in which one end extends into the groove and an eleventh state in which it is located outside the groove. The twelfth drive mechanism is used to drive the second positioning plate to switch between the tenth and eleventh states.

[0094] like Figure 10 As shown, the first mounting plate has a slot 713 at the position corresponding to the pipette tip 42, which is adapted to the second holding part.

[0095] likeFigure 14 As shown, the sample mixing device 1 includes at least a third turntable 12 rotatably connected to the second mounting plate, and a sixth drive mechanism 13 for driving the third turntable to rotate relative to the second mounting plate. The third turntable has a plurality of first holding portions 11 spaced around its rotational axis, each matching the position of a slot. Figure 19 As shown, the bottom of the first holding section is provided with a slot 111; the second mounting plate is provided with at least one second vibration device 721 adapted to the slot 111 and at least one second weighing device 722 adapted to the slot 111. The second weighing device can accurately measure and monitor the mass of the extract and added reagents in the testing container, ensuring the accuracy and repeatability of the experimental conditions, thereby improving the reliability of the test results. The second vibration device ensures thorough mixing of the extract and reagents in the sample container, promoting uniform distribution among the components, improving the purification effect, and thus improving the accuracy of the test.

[0096] like Figure 1 and Figure 2 As shown, this embodiment also includes a centrifugation mechanism 5 and a second transport mechanism 6. The centrifugation mechanism includes a rotating frame 51 and a seventh drive mechanism 52 for driving the rotating frame to rotate. The rotating frame is provided with a plurality of fourth holding portions 511 for accommodating sample containers at intervals around its rotation center axis. The centrifugal force generated by high-speed rotation can further promote the uniform mixing of the sample and the soaking solution, and help to separate unwanted impurities or precipitates. On the one hand, it helps the mixture to form a specific physical state and purity; on the other hand, the centrifugation process also helps to improve the homogeneity of the mixture, which is beneficial to improving the subsequent purification effect.

[0097] The second transport mechanism is used to transfer the sample container between the sample mixing device 1 and the centrifugation mechanism 5. The first holding part 11 of the sample mixing device and the fourth holding part 511 of the centrifugation mechanism are located within the travel range of the free end of the second transport mechanism. The existence of the second transport mechanism realizes the automatic transfer of the sample container between the sample mixing device and the centrifugation mechanism, reduces manual intervention, and improves the automation level of the entire detection process. This automation not only improves work efficiency but also reduces the possibility of human error, ensuring the accuracy and consistency of the test results.

[0098] In this embodiment, as Figure 20 As shown, the centrifugal mechanism also includes a third positioning mechanism, which includes an electromagnet 531 located above the rotating frame 51, and a thirteenth driving mechanism 532 whose output end is fixedly connected to the electromagnet for driving the electromagnet to rotate.

[0099] The rotating frame 51 is fixedly connected to a first positioning washer 512 at the position of the rotation center axis. The first positioning washer is provided with a number of positioning screws 513 at intervals around the rotation center axis. The positioning screws are fitted with second positioning washers 514 corresponding to the electromagnets.

[0100] The seventh drive mechanism 52 drives the rotating frame 51 to rotate, thereby causing the sample container located on the fourth holding section 511 to rotate, allowing the sample and reagent to be tested to undergo centrifugation. When the seventh drive mechanism 52 stops working, the rotating frame stops rotating under the action of resistance. At this time, the electromagnet 531 is energized to attract the third positioning pad 514 sleeved on the positioning screw 513, causing the third positioning pad 514 to move away from the first positioning pad 512 and along the positioning screw towards the electromagnet. After the electromagnet attracts the second positioning pad 514, the thirteenth drive mechanism 532 drives the electromagnet to rotate, causing the first positioning pad to rotate through the second positioning pad and the positioning screw, thereby stopping the rotating frame in the preset position.

[0101] like Figure 9 and Figure 14 As shown, the housing 7 in this embodiment includes a frame 73 and several side plates 74 mounted on the frame. The side plates enclose and form a detection area. The sample mixing device 1, the detection device 2, the reagent adding device 3, the extraction mechanism 4, the centrifugation mechanism 5, and the second transport mechanism 6 are installed inside the housing. The housing is provided with a container window 75.

[0102] like Figure 15 As shown, the food safety testing equipment in this embodiment also includes a third feeding mechanism 8, which includes at least:

[0103] Material box 81, the material box is provided with a second channel 811 for accommodating sample containers to pass through in sequence and connected to the container window, the second channel is provided with a slot 8111 and a baffle 8112 adapted to the slot 8111;

[0104] The eighth drive mechanism 82 has its output end fixedly connected to the baffle and is used to drive the baffle to move relative to the slot six.

[0105] In this embodiment, a third mounting plate 76 is also installed inside the box 7, the material box 81 is installed on the third mounting plate, and the second fixing plate 432 is fixedly connected to the third mounting plate 76 through the second bracket 4322.

[0106] The precise control of the baffle effectively prevents external dust or impurities from contaminating the sample container, ensuring its cleanliness before testing and laying a solid foundation for accurate subsequent detection. The seamless cooperation between the eighth drive mechanism and the baffle enables the sample containers to fall sequentially and orderly, avoiding detection errors caused by sample container accumulation or disorder, and improving the accuracy and reliability of the detection.

[0107] like Figure 2 and Figure 9 As shown, a food safety testing device in this embodiment also includes a sampling mechanism 101 for transporting sample containers to the testing area, and the housing 7 is provided with a sampling window 77 adapted to the sampling mechanism 101.

[0108] In summary, the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 food safety testing device, characterized in that, At least including: The sample mixing device (1) is provided with a plurality of first holding parts (11) for accommodating sample containers. The detection device (2) is provided with a plurality of second holding parts (252) for accommodating the detection container, at least one third holding part (2351) for accommodating the colloidal gold detection card, at least one first image acquisition device (21) matched with the second holding part for acquiring images of the second sample located in the detection container, and a second image acquisition device (22) matched with the third holding part for acquiring images of the colloidal gold detection card. A reagent adding device (3) is provided corresponding to the first holding part (11) of the sample mixing device (1) and the second holding part (252) of the detection device (2), for adding reagents to the sample container located on the first holding part for storing the sample to be tested to form a first sample, and adding reagents to the detection container located on the second holding part for storing the extract to form a second sample; Extraction mechanism (4), the extraction mechanism includes a robotic arm (41) and a pipette (42) installed at the free end of the robotic arm. The robotic arm is used to drive the pipette to extract the first sample located in the sample container in the first holding part (11), and transport the extract to the detection container located in the second holding part or the colloidal gold detection card located in the third holding part, and to drive the pipette to extract the second sample located in the second holding part, and transport the extract to the colloidal gold detection card located in the third holding part; The first holding part, the second holding part, and the third holding part are located within the travel range of the free end of the robot arm.

2. A food safety testing device according to claim 1, characterized in that: The detection device (2) includes a first feeding mechanism (23) for loading and supplying colloidal gold test cards, the first feeding mechanism comprising: The first turntable (231) is provided with a plurality of first material boxes (2311) for accommodating colloidal gold test cards at intervals along the circumferential direction, and a slot (2312) corresponding to each of the first material boxes for accommodating the colloidal gold test cards falling one by one. The first fixing plate (232) is located below the first turntable and is provided with a groove (2321) extending inward from the edge and matching the slot. The first drive mechanism (233) has its output end fixedly connected to the first turntable and is used to drive the first turntable to rotate relative to the first fixed plate.

3. A food safety testing device according to claim 2, characterized in that: The first feeding mechanism (23) also includes: The movable plate (234) is adapted to the groove, and the end of the movable plate away from the rotation center axis of the first turntable is provided with a slot (2341) for accommodating the passage of the colloidal gold test card. The slide (235) is installed below the movable plate. The third holding part (2351) is provided at one end of the slide away from the rotation center axis of the first turntable, and the sliding part (2352) matching the bottom of the second slot is provided at the top of the other end. The movable plate has a first state in which the second slot is located inside the first groove and is connected to the first slot, and a second state in which the second slot is located outside the first groove and is misaligned with the first slot, and is connected to the third holding part. The second drive mechanism (236) is fixedly connected to the movable plate at its output end. The second drive mechanism is used to drive the movable plate to switch between the first state and the second state. The movable plate switches from the second state to the first state. The second driving mechanism drives the movable plate to move along the third holding part towards the first slot until the second slot is connected to the first slot. The colloidal gold test card passes through the first slot and enters the second slot, and its bottom contacts the sliding part. The moving plate switches from the first state to the second state. The second driving mechanism drives the moving plate to move along the first slot towards the third holding part. The colloidal gold detection card slides along the sliding part through the second slot until the second slot is connected to the third holding part. The colloidal gold detection card passes through the second slot and enters the third holding part.

4. A food safety testing device according to claim 3, characterized in that: The chute (235) includes a bottom wall (2353) and side walls (2354) extending upward from the two sides of the bottom. The top of the two side walls at the end of the chute away from the third holding part extends inward to form a gap groove (2355) and the sliding part (2352). A first channel (2356) is formed between the sliding part and the bottom wall, which is connected to the third holding part and is used to accommodate the passage of the colloidal gold test card. The bottom wall is provided with a drop hole (2357) at one end of the sliding part. The movable plate protrudes downward at the edge of the slot two (2341) away from the rotation center axis of the first turntable to form a stop (2342) that matches the gap slot. The moving plate switches from the second state to the first state. The second driving mechanism drives the moving plate to move along the third holding part towards the slot one. The stop block drives the colloidal gold detection card located in the third holding part to slide along the first channel and pass through the drop hole.

5. A food safety testing device according to claim 4, characterized in that: The detection device (2) further includes a desealing mechanism (24), which includes a mounting bracket (241) with its free end extending above the third holding part, a desealing knife (242) mounted on the free end of the mounting bracket, and a ninth driving mechanism (243). The desealing knife has a sixth state in which the tip of the knife is located above the third holding part, and a seventh state in which the tip of the knife extends into the third holding part and abuts against the colloidal gold detection card. The ninth driving mechanism is used to drive the desealing knife to switch between the sixth state and the seventh state.

6. A food safety testing device according to any one of claims 3-5, characterized in that: It also includes a first mounting plate (71); the detection device (2) includes a second turntable (25) located above the first mounting plate, and a third drive mechanism (26) for driving the second turntable to rotate relative to the first mounting plate. The second turntable is provided with a plurality of slots (251) spaced around its rotation center axis. The slots and the first mounting plate form the second holding part (252). The second drive mechanism is installed below the first mounting plate, and its output end passes through the first mounting plate and is fixedly connected to the second turntable. The first mounting plate (71) is equipped with at least one first vibration device (711) adapted to the three phases of the slot and at least one first weighing device (712) adapted to the three phases of the slot.

7. A food safety testing device according to claim 6, characterized in that: The robotic arm (41) includes at least: Mounting base (411), which is located above the third holding part (2351); A sliding plate (412) is fixedly connected to the pipette (42) and slidably connected to the mounting base along the moving direction of the pipette piston rod. The sliding plate is provided with a plurality of first positioning sensors (4121) at intervals along its sliding direction. The fourth driving mechanism (413) has its output end fixedly connected to the sliding plate and is used to drive the sliding plate to slide relative to the mounting base, thereby driving the pipette to move towards the third holding part; The first claw (414) includes a mounting part (4141) that is slidably connected to the sliding plate. The sliding direction of the mounting part is parallel to the sliding direction of the sliding plate. One side of the mounting part extends outward to form a first positioning part (4142) that is adapted to the first positioning sensor. The other side is provided with a first pressing part (4143) that matches the top of the piston rod of the pipette (42) and a second pressing part (4144) that matches the eject button of the pipette. The first claw has: The first pressing part releases the top of the pipette piston rod, and the second pressing part releases the third state of the pipette ejection button; The first pressing part abuts against the top of the pipette piston rod, and the second pressing part releases the fourth state of the pipette ejection button; The first pressing part abuts against the top of the pipette piston rod, and the second pressing part abuts against the fifth state of the pipette eject button; The fifth driving mechanism (415) has its output end fixedly connected to the first claw, and is used to drive the first claw to slide relative to the sliding plate, thereby allowing the first claw to switch between the third, fourth, and fifth states. The third holding part (2351) is located above the second turntable (25) and matches the position of the second holding part. The third holding part is provided with a relief groove (23511) that matches the pipette tip (42).

8. A food safety testing device according to claim 7, characterized in that: The extraction mechanism (4) further includes a second feeding mechanism (43) for loading the pipette tip (42) and a first transport mechanism (44) for transferring the pipette tip from the second feeding mechanism to the pipette, wherein the outlet of the second feeding mechanism (43) and the end of the pipette body (42) are within the travel range of the free end of the first transport mechanism.

9. A food safety testing device according to claim 8, characterized in that: The second feeding mechanism (43) includes: The fourth turntable (431) is provided with a plurality of second material boxes (4311) for accommodating the pipette (42) tips at intervals along the circumferential direction, and slots (4312) corresponding to the second material boxes for accommodating the pipette (42) tips falling one by one. The second fixing plate (432) is located below the fourth turntable and is provided with a slot eight (4321) that matches the slot seven. The tenth drive mechanism (433) has its output end fixedly connected to the fourth turntable and is used to drive the fourth turntable to rotate relative to the second fixed plate. The first material pipe (434) is provided with an inlet (4341) and an outlet (4342) that are connected to the slot eight. A first positioning mechanism (435) includes a first positioning plate (4351) that matches the outlet of the first material pipe, and an eleventh driving mechanism (4352). The first positioning plate has an eighth state in which one end extends into the outlet, and a ninth state located outside the outlet. The eleventh driving mechanism is used to drive the first positioning plate to switch between the eighth state and the ninth state.

10. A food safety testing device according to claim 9, characterized in that: The second feeding mechanism (43) also includes: The second material pipe (436) is connected to the first material pipe and has a groove (4361) on its side wall. The second positioning mechanism (437) includes a second positioning plate (4371) adapted to the second groove and a twelfth driving mechanism (4372). The second positioning plate has a tenth state in which one end extends into the second groove and an eleventh state located outside the second groove. The twelfth driving mechanism is used to drive the second positioning plate to switch between the tenth state and the eleventh state.

11. A food safety testing device according to any one of claims 7-10, characterized in that: It also includes a second mounting plate (72) located below the first mounting plate (71), and the first mounting plate is provided with a slot (713) at the position corresponding to the pipette tip (42) to match the second holding part. The sample mixing device (1) includes at least a third turntable (12) rotatably connected to the second mounting plate, and a sixth drive mechanism (13) for driving the third turntable to rotate relative to the second mounting plate. The third turntable is provided with a plurality of first holding portions (11) that match the positions of the slots four around its rotation center axis. The bottom of the first holding portion is provided with slot five (111). The second mounting plate is provided with at least one second vibration device (721) adapted to the slot five phases and at least one second weighing device (722) adapted to the slot five phases.

12. A food safety testing device according to any one of claims 1-5 or 7-10, characterized in that: It also includes a centrifugation mechanism (5) and a second transport mechanism (6). The centrifugation mechanism includes a rotating frame (51) and a seventh drive mechanism (52) for driving the rotating frame to rotate. The rotating frame is provided with a plurality of fourth holding parts (511) for accommodating sample containers at intervals around its rotation center axis. The second transport mechanism is used to transfer sample containers between the sample mixing device (1) and the centrifugation mechanism (5). The first holding part (11) of the sample mixing device and the fourth holding part (511) of the centrifugation mechanism are located within the travel range of the free end of the second transport mechanism.

13. A food safety testing device according to claim 12, characterized in that: The centrifugal mechanism (5) also includes a third positioning mechanism (53), which includes an electromagnet (531) located above the rotating frame (51) and a thirteenth driving mechanism (532) whose output end is fixedly connected to the electromagnet for driving the electromagnet to rotate. The rotating frame (51) is fixedly connected to a first positioning pad (512) at the position of the rotation center axis. The first positioning pad is provided with a plurality of positioning screws (513) at intervals around the rotation center axis. The positioning screws are fitted with a second positioning pad (514) corresponding to the electromagnet.

14. A food safety testing device according to claim 13, characterized in that: It also includes a housing (7) and a third feeding mechanism (8) for loading and supplying sample containers. The housing includes a frame (73) and several side plates (74) mounted on the frame. The side plates enclose a detection area. The sample mixing device (1), detection device (2), reagent adding device (3), extraction mechanism (4), centrifugation mechanism (5) and second transport mechanism (6) are installed in the housing. The housing is provided with a container window (75). The third feeding mechanism (8) includes at least: Material box (81), the material box is provided with a second channel (811) for accommodating sample containers to pass through in sequence and connected to the container window, the second channel is provided with a slot six (8111) and a baffle (8112) adapted to the slot six. The eighth drive mechanism (82) is fixedly connected to the baffle and is used to drive the baffle to move relative to the slot six.

Images