Heavy metal detection workstation for dairy products

Abstract

The utility model relates to the technical field of sample detection, and provides a heavy metal detection workstation for dairy products, which comprises oscillation equipment, reagent cache equipment, digestion equipment, a plasma mass spectrometer and transfer equipment. The oscillation equipment is used for carrying out oscillation treatment on a container filled with dairy products, and the transfer equipment is used for sampling from the container, transferring a sampled dairy product sample to the digestion tube and transferring the digestion tube filled with the dairy product sample to the digestion equipment. The digestion equipment is used for digesting the dairy product sample to obtain a mixed solution; the transfer equipment is used for sampling a mixed solution and transferring a mixed solution sample obtained by sampling into the first centrifugal tube; the reagent caching equipment is used for storing a second centrifugal tube of a standard solution. And the plasma mass spectrometer is used for detecting the mixed solution sample and the standard solution so as to obtain the heavy metal content in the dairy product. The heavy metal detection workstation for dairy products can realize automation of heavy metal content detection, is high in detection efficiency and saves manpower.

Description

TECHNICAL FIELD

[0001] The utility model relates to sample detection technical field especially, relate to a dairy heavy metal detection workstation. BACKGROUND

[0002] Dairy products usually need to carry out heavy metal detection in the production process. In the prior art, the whole dairy heavy metal detection process usually needs detection personnel to operate manually, the detection process is complex, and the detection efficiency is low. UTILITY MODEL CONTENTS

[0003] The utility model provides a dairy heavy metal detection workstation to solve the defects of manual operation, complex detection process and low detection efficiency in the prior art dairy metal detection process.

[0004] The utility model provides a dairy heavy metal detection workstation, it includes: oscillation equipment, reagent buffer equipment, digestion equipment, plasma mass spectrometer and transfer equipment,

[0005] The oscillation equipment is used to carry out oscillation treatment to the container with dairy products, and the transfer equipment is used to sample from the container, and the dairy product sample obtained by sampling is transferred to the digestion tube, and the digestion tube containing the dairy product sample is transferred to the digestion equipment,

[0006] The digestion equipment is used to mix and digest the digestion agent with the dairy product sample based on the digestion tube, and obtains the mixed solution, and the transfer equipment is used to sample the mixed solution sample, and the mixed solution sample obtained by sampling is transferred to the first centrifugal tube,

[0007] The reagent buffer equipment is used to store the second centrifugal tube containing the standard solution for heavy metal comparison test, and the transfer equipment is used to transfer the first centrifugal tube and the second centrifugal tube to the plasma mass spectrometer respectively,

[0008] The plasma mass spectrometer is used to detect the mixed solution sample and the standard solution to obtain the heavy metal content in the dairy product.

[0009] According to the dairy heavy metal detection workstation of the utility model, the transfer equipment includes the first mechanical hand, the second mechanical hand, the first pipette device and the second pipette device,

[0010] The first mechanical hand is used to pick up the digestion tube and the container containing the dairy product respectively, so as to place the digestion tube and the container in the first pipette device, and the first pipette device is used to sample from the container, and the dairy product sample obtained by sampling is transferred to the digestion tube, and the first mechanical hand is also used to transfer the digestion tube containing the dairy product sample to the digestion equipment,

[0011] The second mechanical arm is used for picking up the first centrifugal tube and the digestion tube containing the mixed solution after digestion treatment respectively, and placing the first centrifugal tube and the digestion tube on the second pipetting device; the second pipetting device is used for sampling from the digestion tube, and transferring the mixed solution sample obtained by sampling to the first centrifugal tube; the second mechanical arm is also used for transferring the first centrifugal tube and the second centrifugal tube to the plasma mass spectrometer respectively.

[0012] According to the dairy product heavy metal detection work station, the first pipetting device comprises a first liquid distribution table, a first liquid distribution mechanical arm and a balance; the first liquid distribution mechanical arm is arranged on the first liquid distribution table, and the first liquid distribution mechanical arm is electrically connected with the balance;

[0013] The first mechanical arm is used for placing the container containing the dairy product on the first liquid distribution table, and placing the digestion tube on the balance, and the balance is used for measuring the weight of the digestion tube and its content and feeding back to the first liquid distribution mechanical arm; the first liquid distribution mechanical arm is used for sampling from the container according to the measurement data of the balance, and quantitatively transferring the dairy product sample obtained by sampling into the digestion tube on the balance.

[0014] According to the dairy product heavy metal detection work station, the second pipetting device comprises a second liquid distribution table and a second liquid distribution mechanical arm; the second liquid distribution mechanical arm is arranged on the second liquid distribution table;

[0015] The second mechanical arm is used for placing the first centrifugal tube and the digestion tube containing the mixed solution on the second liquid distribution table; the second liquid distribution mechanical arm is used for sampling from the digestion tube, and transferring the mixed solution sample obtained by sampling into the first centrifugal tube.

[0016] According to the dairy product heavy metal detection work station, the oscillation device comprises an oscillation device and a cap screwing device;

[0017] The oscillation device is used for oscillating the container containing the dairy product, and the first mechanical arm is also used for transferring the container from the oscillation device to the cap screwing device, and the cap screwing device is used for opening the cover of the container.

[0018] According to the dairy product heavy metal detection work station, the plasma mass spectrometer comprises a detection bin and a sample inlet mechanism;

[0019] The detection bin is provided with a bin opening; the sample feeding mechanism comprises a base and a centrifugal tube rack, the base is arranged outside the bin opening, and the centrifugal tube rack is movably arranged on the base to feed into or out of the detection bin; and the second mechanical arm is used for transferring the first centrifugal tube and the second centrifugal tube to the centrifugal tube rack respectively.

[0020] The dairy product heavy metal detection workstation further comprises a first waste liquid treatment device, and the second mechanical arm is further used for transferring the first centrifugal tube, the second centrifugal tube and the digestion tube to the first waste liquid treatment device after detection is completed, and the first waste liquid treatment device is used for collecting and treating waste liquid in the first centrifugal tube, the second centrifugal tube and the digestion tube.

[0021] The dairy product heavy metal detection workstation further comprises a feeding device and a feeding buffer device; the feeding device is arranged at a feeding position of the dairy product heavy metal detection workstation, and the feeding device is used for transferring the container containing the dairy product from an external line to the feeding buffer device; and the feeding buffer device is used for buffering the container.

[0022] The feeding device comprises a feeding mechanical arm and a code scanning device.

[0023] The feeding mechanical arm is used for transferring the container of the external line to the feeding buffer device and transferring the container to a corresponding position of the code scanning device, so that the code scanning device can scan and identify the identification code on the container.

[0024] The dairy product heavy metal detection workstation further comprises a second waste liquid treatment device, and the transferring device is further used for transferring the container after sampling to the second waste liquid treatment device, and the second waste liquid treatment device is used for collecting and treating waste liquid in the container.

[0025] The dairy product heavy metal detection workstation can realize automatic transfer of the container between the various devices during the detection process and automatic transfer of various solutions between the various containers, and realizes the automation of the entire detection process by cooperating with the various devices, without manual operation, so that the detection efficiency is high and the manpower is saved. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is one of the schematic diagrams of the dairy product heavy metal detection workbench provided in this embodiment of the utility model.

[0028] Figure 2 This is a top view of the dairy product heavy metal detection workbench provided in this embodiment of the utility model.

[0029] Figure 3 This is the second schematic diagram of the dairy product heavy metal detection workbench provided in this embodiment of the utility model.

[0030] Figure label:

[0031] 1. Vibrating equipment; 11. Vibrating device; 12. Capping device;

[0032] 2. Reagent caching equipment;

[0033] 3. Digestion equipment; 4. Inductively coupled plasma mass spectrometer; 41. Detection chamber; 42. Sample introduction mechanism;

[0034] 5. Transfer equipment; 51. First robotic arm; 52. Second robotic arm; 53. First pipetting device; 531. First dispensing stage; 532. First dispensing robotic arm; 533. Balance; 54. Second pipetting device; 541. Second dispensing stage; 542. Second dispensing robotic arm; 55. Third robotic arm; 56. First digestion tube placement stage; 57. Second digestion tube placement stage;

[0035] 6. First waste liquid treatment device;

[0036] 7. Feeding equipment; 71. Feeding robot; 72. Barcode scanning device;

[0037] 8. Feeding and buffering device; 9. Second waste liquid treatment device;

[0038] 101. Unit cover; 102. Exhaust unit. Detailed Implementation

[0039] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme in the utility model will be described clearly and completely in combination with the drawings in the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0040] The utility model discloses a dairy heavy metal detection work station. Figures 1-3 The utility model discloses a dairy heavy metal detection work station.

[0041] As Figure 1 And Figure 2 The utility model provides a kind of dairy heavy metal detection work station, comprising: oscillation equipment 1, reagent buffer equipment 2, digestion equipment 3, plasma mass spectrometer 4 and transfer equipment 5.Oscillation equipment 1 is used to carry out oscillation treatment to the container with dairy product, transfer equipment 5 is used to sample from container, and the dairy product sample obtained by sampling is transferred to digestion tube, and the digestion tube containing dairy product sample is transferred to digestion equipment 3.Digestion equipment 3 is used to mix digestion agent with dairy product sample based on digestion tube and carry out digestion, obtain mixed solution.Transfer equipment 5 is used to sample mixed solution, and the mixed solution sample obtained by sampling is transferred to first centrifugal tube.Reagent buffer equipment 2 is used to store second centrifugal tube containing standard solution for heavy metal comparison test.Transfer equipment 5 is used to transfer first centrifugal tube and second centrifugal tube to plasma mass spectrometer 4.Plasma mass spectrometer 4 is used to detect mixed solution sample and standard solution to obtain the heavy metal content in dairy product.

[0042] It can be understood that the transfer equipment 5 of the embodiment is provided with transfer device for transferring vessel (including but not limited to centrifugal tube, digestion tube, etc.) and transfer device for transferring liquid (such as pipette) only, which can transfer vessel between different devices and transfer liquid between different vessels.

[0043] The oscillation equipment 1 of the embodiment is used to oscillate the container containing dairy product, so that the dairy product in the container is shaken evenly for subsequent processing.

[0044] After the oscillation is completed, the transfer device 5 extends into the container to suck a certain amount of the dairy product sample according to the detection requirement, and transfers the dairy product sample to the digestion tube, and transfers the digestion tube to the digestion device 3. The digestion device 3 can add a digestion agent (such as hydrochloric acid, nitric acid, hydrofluoric acid, etc.) to the dairy product sample in the digestion tube, and the digestion agent can destroy the organic matter in the dairy product sample, release the metal elements, and make them exist in the form of ions. It can be understood that the digestion device 3 can also usually heat the mixed liquid mixed by the digestion agent and the dairy product sample by heating (usually by microwave heating) to improve the digestion rate. After the digestion is completed, the transfer device 5 extends into the digestion tube to sample the mixed liquid, and transfers the mixed liquid sample obtained by sampling to the first centrifugal tube.

[0045] The reagent buffer device 2 of the embodiment is used to store the second centrifugal tube containing the standard solution. It can be understood that the standard solution can be configured in advance according to the type of heavy metal element to be detected, and is contained in the second centrifugal tube for use. During detection, the transfer device 5 transfers the first centrifugal tube containing the mixed liquid sample to be detected and the second centrifugal tube containing the standard solution to the inductively coupled plasma mass spectrometer 4, respectively. The inductively coupled plasma mass spectrometer 4 can detect the concentration of heavy metal ions in the mixed liquid sample and the standard solution, respectively, and draw corresponding detection curves. By comparing the detection curves of the mixed liquid sample and the standard solution, the heavy metal content in the mixed liquid sample can be obtained, so as to obtain the heavy metal content in the dairy product sample, and determine whether the heavy metal content in the dairy product exceeds the standard.

[0046] The dairy product heavy metal detection workstation of the embodiment can be understood as follows. The dairy product to be detected is oscillated by the oscillation device 1 to facilitate sampling by the transfer device 5. Then, the digestion device 3 adds a digestion agent to the oscillated and shaken dairy product sample and performs digestion, so that the metal elements in the dairy product sample exist in the form of ions. The mixed liquid after digestion is sampled by the transfer device 5 and transferred to the first centrifugal tube. Then, the first centrifugal tube and the second centrifugal tube containing the standard solution are transferred to the inductively coupled plasma mass spectrometer 4 for comparison and detection. Finally, the heavy metal content of the dairy product is obtained, so as to determine whether the heavy metal content of the dairy product exceeds the standard. At the same time, the transfer device 5 can realize automatic transfer of the vessels among the devices and automatic transfer of various solutions among the vessels during the detection process, and cooperate with the devices to realize automation of the entire detection process, without manual operation, high detection efficiency, and saving of manpower.

[0047] It can be understood that the standard solution is configured according to the detection requirement, and contains one or more solutions of known concentration of heavy metal elements, which can be used to calibrate the inductively coupled plasma mass spectrometer 4 or provide the inductively coupled plasma mass spectrometer 4 for detection and drawing of a calibration curve during quantitative analysis of the sample.

[0048] In some embodiments, as Figure 1 andFigure 2 As shown, the transfer device 5 comprises a first robot 51, a second robot 52, a first pipetting device 53 and a second pipetting device 54. The first robot 51 is used to pick up the digestion tube and the container containing the dairy product respectively, so as to place the digestion tube and the container into the first pipetting device 53. The first pipetting device 53 is used to sample from the container, and transfer the sample of the dairy product obtained by sampling into the digestion tube. The first robot 51 is also used to transfer the digestion tube containing the sample of the dairy product to the digestion device 3. The second robot 52 is used to pick up the first centrifuge tube and the digestion tube containing the mixed solution after digestion respectively, and place the first centrifuge tube and the digestion tube into the second pipetting device 54. The second pipetting device 54 is used to sample from the digestion tube, and transfer the sample of the mixed solution obtained by sampling into the first centrifuge tube. The second robot 52 is also used to transfer the first centrifuge tube and the second centrifuge tube to the ICP-MS 4 respectively.

[0049] In the present embodiment, the first robot 51 is provided with an end effector (such as a clamping mechanism) capable of picking up the digestion tube, the container containing the dairy product and the like, so as to transfer the container containing the dairy product and the empty digestion tube to the first pipetting device 53 after the oscillation device 1 completes oscillation. The first pipetting device 53 is used to sample the dairy product in the container of the dairy product, and inject the sample of the dairy product obtained into the empty digestion tube. After sampling is completed, the first robot 51 takes the digestion tube from the first pipetting device 53, and transfers it to the digestion device 3. The digestion device 3 automatically adds a digestion agent to the sample of the dairy product in the digestion tube, and performs digestion treatment.

[0050] The second robot 52 of the present embodiment is also provided with an end effector capable of picking up the digestion tube, the container containing the dairy product and the like, so as to transfer the digestion tube and the empty first centrifuge tube to the second pipetting device 54 after digestion is completed. The second pipetting device 54 is capable of sampling the mixed solution in the digestion tube after digestion, and transferring the sample of the mixed solution obtained into the first centrifuge tube, so as to be sent to the ICP-MS 4 for detection. After sampling is completed, the second robot 52 transfers the first centrifuge tube containing the sample of the mixed solution and the second centrifuge tube containing the standard solution to the ICP-MS 4 for detection.

[0051] In a specific embodiment, as shown in FIG. 2, the first robot 51 is provided with a first end effector 511 and a second end effector 512. The first end effector 511 is used to pick up the container containing the dairy product, and the second end effector 512 is used to pick up the empty digestion tube. The first pipetting device 53 is used to sample the dairy product in the container of the dairy product, and inject the sample of the dairy product obtained into the empty digestion tube. After sampling is completed, the first robot 51 takes the digestion tube from the first pipetting device 53, and transfers it to the digestion device 3. The digestion device 3 automatically adds a digestion agent to the sample of the dairy product in the digestion tube, and performs digestion treatment. Figure 1 and Figure 2As shown, the dairy heavy metal detection workstation further comprises a digestion tube buffer tray, and the transfer device 5 further comprises a third mechanical arm 55, a first digestion tube placement table 56 and a second digestion tube placement table 57. The third mechanical arm 55 is arranged between the first mechanical arm 51 and the second mechanical arm 52, the first digestion tube placement table 56 is arranged between the first mechanical arm 51 and the third mechanical arm 55, and the second digestion tube placement table 57 is arranged between the third mechanical arm 55 and the second mechanical arm 52. The third mechanical arm 55 is used to pick up an empty digestion tube from the digestion tube buffer tray and place it on the first digestion tube placement table 56 for the first mechanical arm 51 to take. After digestion is completed, the third mechanical arm 55 can transfer the digestion tube containing the digested mixed solution to the second digestion tube placement table 57 for the second mechanical arm 52 to take.

[0052] It can be understood that the digestion tube buffer tray can be used to buffer a digestion rack on which a plurality of digestion tubes are placed, and the third mechanical arm 55 can directly place the digestion rack on the first digestion tube placement table 56 for the first mechanical arm 51 to take.

[0053] In some embodiments, as shown in Figs. 1 and 2, the first pipetting device 53 comprises a first dispensing table 531, a first dispensing mechanical arm 532 and a balance 533. The first dispensing mechanical arm 532 is arranged on the first dispensing table 531, and the first dispensing mechanical arm 532 is electrically connected with the balance 533. The first mechanical arm 51 is used to place a container containing dairy products on the first dispensing table 531 and place a digestion tube on the balance 533, and the balance 533 is used to measure the weight of the digestion tube and its contents and feed back to the first dispensing mechanical arm 532. The first dispensing mechanical arm 532 is used to sample from the container according to the measurement data of the balance 533 and quantitatively transfer the dairy product sample obtained by sampling into the digestion tube on the balance 533. Figure 1 Figure 2 In some embodiments, as shown in Figs. 1 and 2, the first pipetting device 53 comprises a first dispensing table 531, a first dispensing mechanical arm 532 and a balance 533. The first dispensing mechanical arm 532 is arranged on the first dispensing table 531, and the first dispensing mechanical arm 532 is electrically connected with the balance 533. The first mechanical arm 51 is used to place a container containing dairy products on the first dispensing table 531 and place a digestion tube on the balance 533, and the balance 533 is used to measure the weight of the digestion tube and its contents and feed back to the first dispensing mechanical arm 532. The first dispensing mechanical arm 532 is used to sample from the container according to the measurement data of the balance 533 and quantitatively transfer the dairy product sample obtained by sampling into the digestion tube on the balance 533.

[0054] In this embodiment, before sampling the dairy product after oscillation and shaking, the first mechanical arm 51 will first place the container containing the dairy product on the first dispensing table 531 and place the empty digestion tube on the balance 533. After the balance 533 contains the empty digestion tube, it will weigh and record the weight of the empty digestion tube in order to calculate the weight of the dairy product sample in the digestion tube in the subsequent process of adding the dairy product sample; or, after the balance 533 contains the empty digestion tube, it will detect the weight data and reset to zero to achieve the skinning process, and in the subsequent process of adding the dairy product sample, the detection reading of the balance 533 can directly reflect the weight of the dairy product sample in the digestion tube. Then, the end effector of the first dispensing mechanical arm 532 can extend into the container to sample the dairy product and transfer the obtained dairy product sample into the digestion tube on the balance 533.

[0055] ​During the sampling process, the balance 533 can detect the weight of the digestion tube and its contents in real time and feed back the weight information to the first dispensing robot 532 in real time. The control system of the first dispensing robot 532 can obtain the weight of the dairy sample in the current digestion tube in real time according to the weight information, and control the first dispensing robot 532 to realize quantitative sampling of the digestion tube according to the preset sampling weight according to the detection requirement, without manual operation, and the sampling is more accurate and reliable.

[0056] Specifically, in some embodiments, the first tube cap clamping mechanism is installed on the first dispensing table 531. Before placing the digestion tube on the balance 533, the first robot 51 can first transfer the digestion tube to the corresponding position of the first tube cap clamping mechanism, so that the first tube cap clamping mechanism clamps the cap or plug of the digestion tube, cooperates with the first robot 51 to unscrew the cap or plug of the digestion tube, and then places the uncapped digestion tube on the balance 533 for sampling. After digestion is completed, the first tube cap clamping mechanism can also cooperate with the first robot 51 to reclose the digestion tube containing the mixed solution.

[0057] In some embodiments, as shown in Figure 1 and Figure 2 The second dispensing device 54 includes a second dispensing table 541 and a second dispensing robot 542. The second dispensing robot 542 is arranged on the second dispensing table 541. The second robot 52 is used to place the first centrifugal tube and the digestion tube containing the mixed solution on the second dispensing table 541. The second dispensing robot 542 is used to sample from the digestion tube and transfer the obtained mixed solution sample to the first centrifugal tube.

[0058] In this embodiment, after digestion is completed, the second robot 52 first places the digestion tube containing the mixed solution and the empty first centrifugal tube on the second dispensing table 541. Then, the end effector of the second dispensing robot 542 can extend into the digestion tube to sample the mixed solution and transfer the obtained dairy sample to the first centrifugal tube, so as to be sent into the plasma mass spectrometer 4 for detection subsequently.

[0059] Specifically, in some embodiments, the second tube cap clamping mechanism is installed on the second dispensing table 541. Before placing the digestion tube on the second dispensing table 541, the second robot 52 can first transfer the digestion tube to the corresponding position of the second tube cap clamping mechanism, so that the second tube cap clamping mechanism clamps the cap or plug of the digestion tube, cooperates with the second robot 52 to unscrew the cap or plug of the digestion tube, and cooperates with the second robot 52 to reclose the digestion tube when needed in the subsequent process.

[0060] Specifically, in some embodiments, the end effector of the first liquid distribution robot 532 and the end effector of the second liquid distribution robot 542 are both pipettes, the pipettes have detachable pipette tips, and the pipettes are capable of driving the pipette tips to suck solutions so as to transfer the liquids. The dairy heavy metal detection work station further comprises a pipette rack for buffering the pipette tips.

[0061] In some embodiments, as shown in Figure 1 and Figure 2 , the oscillation device 1 comprises an oscillation device 11 and a cap opening device 12. The oscillation device 11 is used for oscillating the container containing the dairy product, and the first robot 51 is further used for transferring the container from the oscillation device 11 to the cap opening device 12, and the cap opening device 12 is used for opening the cover of the container.

[0062] In this embodiment, after the oscillation device 11 completes the oscillation of the container, the first robot 51 can transfer the container to the cap opening device 12, and the cap opening device 12 is used for opening the cover of the container so as to subsequently sample the dairy product in the container.

[0063] In some embodiments, as shown in Figure 1 and Figure 2 , the plasma mass spectrometer 4 comprises a detection chamber 41 and a sample injection mechanism 42. The detection chamber 41 is provided with a chamber opening. The sample injection mechanism 42 comprises a base and a centrifugal tube rack, the base is arranged outside the chamber opening, and the centrifugal tube rack is movably arranged on the base to enter and exit the detection chamber 41. The second robot 52 is used for transferring the first centrifugal tube and the second centrifugal tube to the centrifugal tube rack, respectively.

[0064] In this embodiment, by arranging the sample injection mechanism 42 at the chamber opening of the detection chamber 41, the sample injection mechanism 42 comprises a fixed base and a movable centrifugal tube rack. When detection is performed, the second robot 52 can place the first centrifugal tube containing the mixed solution and the second centrifugal tube containing the standard solution on the centrifugal tube rack, and the centrifugal tube rack is moved to send the first centrifugal tube and the second centrifugal tube into the detection chamber 41. After the detection in the detection chamber 41 is completed, the centrifugal tube rack exits the detection chamber 41 for subsequent processing.

[0065] In some embodiments, as shown in Figure 1 and Figure 2 , the dairy heavy metal detection work station further comprises a first waste liquid treatment device 6, and the second robot 52 is further used for transferring the first centrifugal tube, the second centrifugal tube and the digestion tube to the first waste liquid treatment device 6 after detection is completed, and the first waste liquid treatment device 6 is used for collecting and processing the waste liquid in the first centrifugal tube, the second centrifugal tube and the digestion tube.

[0066] In the embodiment, after the detection is completed, the first centrifugal tube, the second centrifugal tube and the digestion tube still have solutions remaining therein, and the second mechanical arm 52 can transfer the first centrifugal tube, the second centrifugal tube and the digestion tube to the first waste liquid treatment device 6 and pour the remaining liquid in the tubes into the first waste liquid treatment device 6, so as to centrally treat and discharge the waste liquid in the subsequent process.

[0067] In some embodiments, the dairy product heavy metal detection work station further comprises a buffer tray corresponding to the first centrifugal tube, the second centrifugal tube and the digestion tube, for buffering the first centrifugal tube, the second centrifugal tube and the digestion tube after the waste liquid is poured, so as to centrally clean and recycle the first centrifugal tube, the second centrifugal tube and the digestion tube.

[0068] In some embodiments, as shown in Figure 1 and Figure 2 , the dairy product heavy metal detection work station further comprises a feeding device 7 and a feeding buffer device 8. The feeding device 7 is arranged at a feeding position of the dairy product heavy metal detection work station, and is used to transfer containers containing dairy products from an external line to the feeding buffer device 8, and the feeding buffer device 8 is used to buffer the containers.

[0069] In the embodiment, the feeding device 7 is used to pick up the containers containing the dairy products conveyed by the external line and transfer the containers to the feeding buffer device 8, so as to realize automatic feeding and buffering of the containers containing the dairy products to be detected, so as to facilitate subsequent detection of the dairy products to be detected.

[0070] Specifically, in some embodiments, as shown in Figure 1 and Figure 2 , the feeding device 7 comprises a feeding mechanical arm 71 and a code scanning device 72. The feeding mechanical arm 71 is used to transfer the containers of the external line to the feeding buffer device 8, and transfer the containers to the corresponding positions of the code scanning device 72, so as to scan and identify the identification code on the containers by the code scanning device 72.

[0071] In the embodiment, the feeding mechanical arm 71 can pick up the containers containing the dairy products to be detected on the external line and place the containers on the feeding buffer device 8 for buffering. At the beginning of the detection, the feeding mechanical arm 71 can transfer the containers in the feeding buffer device 8 to the scanning end of the code scanning device 72 for identification by the code scanning device 72, and the code scanning device 72 can determine the heavy metal element type and detection process required for the dairy products in the containers according to the identification code on the containers, so as to facilitate the dairy product heavy metal detection work station to monitor the detection process and facilitate the detection personnel to trace the detection results. Specifically, the identification code usually stores information such as batch of the dairy products to be detected, so as to facilitate the detection personnel to trace and process the batch of dairy products when the detection result shows that the heavy metal content exceeds the standard.

[0072] In some embodiments, as shown in Figure 1 and Figure 2 The dairy heavy metal detection work station also includes a second waste liquid treatment device 9, and the transfer device 5 is further used to transfer the sampling container into the second waste liquid treatment device 9, and the second waste liquid treatment device 9 is used to collect and treat the waste liquid in the container.

[0073] In this embodiment, after sampling the dairy product in the container for detection, the container usually still has dairy product remaining, and the transfer device 5 can transfer the container to the second waste liquid treatment device 9 and pour the remaining dairy product in the tube into the second waste liquid treatment device 9, so as to subsequently collect and discharge the waste liquid.

[0074] In some embodiments, the dairy heavy metal detection work station is also provided with an AGV (Automated Guided Vehicle) trolley, which can transfer the used containers, first centrifuge tubes, second centrifuge tubes and digestion tubes to the AGV trolley after a certain number of detections, and then transport them to a cleaning work station for centralized cleaning. The above-mentioned vessels after cleaning can be reused.

[0075] In some embodiments, as shown in Figure 3 The dairy heavy metal detection work station also includes a machine cover 101. The machine cover 101 is buckled on the top of the oscillation device 1, the reagent buffer device 2, the digestion device 3, the plasma mass spectrometer 4 and the transfer device 5, so as to ensure the sterile environment inside the machine cover 101. The side of the machine cover 101 forms a cabinet door, which facilitates the adjustment of various devices inside the machine cover 101. The machine cover 101 is provided with an opening corresponding to the oscillation device 1, and the opening is provided to cooperate with the AGV or the external conveying line body, so as to facilitate the feeding.

[0076] Specifically, the cabinet door can be a glass cabinet door, so as to better observe the inside of the machine cover 101.

[0077] Further, in some embodiments, the dairy heavy metal detection work station also includes an exhaust unit 102. The exhaust unit 102 is arranged on the top of the machine cover 101. The exhaust unit 102 can discharge the turbid gas inside the machine cover 101 based on a power system such as a motor, so as to improve the detection environment.

[0078] Further, in some embodiments, the dairy heavy metal detection work station further comprises a host computer and an alarm lamp, the host computer is arranged outside the machine cover 101, the host computer is in communication connection with the oscillation device 1, the reagent buffer device 2, the digestion device 3, the plasma mass spectrometer 4 and the transfer device 5, and the host computer is used for controlling various devices in the machine cover 101. The alarm lamp is arranged at the top of the machine cover 101, the alarm lamp is in communication connection with the host computer, and the alarm lamp is used for indicating the working state of the dairy heavy metal detection work station through different colors of light to prompt the staff to repair as soon as possible when the dairy heavy metal detection work station fails.

[0079] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A dairy heavy metal detection station, characterized in that, The system comprises: an oscillation device, a reagent buffer device, a digestion device, an inductively coupled plasma mass spectrometer and a transfer device; the oscillation device is used for oscillating a container containing a dairy product, and the transfer device is used for sampling the dairy product from the container, transferring the obtained dairy product sample to a digestion tube, and transferring the digestion tube containing the dairy product sample to the digestion device; the digestion device is used for mixing and digesting a digestion agent with the dairy product sample based on the digestion tube to obtain a mixed solution; and the transfer device is used for sampling the mixed solution and transferring the obtained mixed solution sample to a first centrifuge tube; the reagent buffer device is used for storing a second centrifuge tube containing a standard solution for heavy metal comparison test, and the transfer device is used for transferring the first centrifuge tube and the second centrifuge tube to the inductively coupled plasma mass spectrometer respectively; the inductively coupled plasma mass spectrometer is used for detecting the mixed solution sample and the standard solution to obtain the content of heavy metals in the dairy product.

2. The dairy heavy metal detection station of claim 1, wherein, The transfer device comprises a first mechanical arm, a second mechanical arm, a first pipetting device and a second pipetting device; the first mechanical arm is used for picking up the digestion tube and the container containing the dairy product respectively, so as to place the digestion tube and the container on the first pipetting device; the first pipetting device is used for sampling the dairy product from the container and transferring the obtained dairy product sample to the digestion tube; and the first mechanical arm is further used for transferring the digestion tube containing the dairy product sample to the digestion device; the second mechanical arm is used for picking up the first centrifuge tube and the digestion tube containing the mixed solution after digestion respectively, so as to place the first centrifuge tube and the digestion tube on the second pipetting device; the second pipetting device is used for sampling the mixed solution from the digestion tube and transferring the obtained mixed solution sample to the first centrifuge tube; and the second mechanical arm is further used for transferring the first centrifuge tube and the second centrifuge tube to the inductively coupled plasma mass spectrometer respectively.

3. The dairy heavy metal detection station of claim 2, wherein, The first pipetting device comprises a first dispensing table, a first dispensing mechanical arm and a balance; the first dispensing mechanical arm is arranged on the first dispensing table, and the first dispensing mechanical arm is electrically connected with the balance; the first mechanical arm is used for placing the container containing the dairy product on the first dispensing table and placing the digestion tube on the balance; the balance is used for measuring the weight of the digestion tube and its content and feeding back to the first dispensing mechanical arm; and the first dispensing mechanical arm is used for sampling the dairy product from the container according to the measurement data of the balance and transferring the obtained dairy product sample to the digestion tube on the balance quantitatively.

4. The dairy heavy metal detection station of claim 3, wherein, The second pipetting device comprises a second dispensing table and a second dispensing mechanical arm; the second dispensing mechanical arm is arranged on the second dispensing table; the second mechanical arm is used for placing the first centrifuge tube and the digestion tube containing the mixed solution on the second dispensing table; and the second dispensing mechanical arm is used for sampling the mixed solution from the digestion tube and transferring the obtained mixed solution sample to the first centrifuge tube.

5. The dairy heavy metal detection station of claim 2, wherein, The oscillation device comprises an oscillation device and a cap screwing device. The oscillation device is used for oscillating the container containing the dairy product, and the first mechanical arm is further used for transferring the container from the oscillation device to the cap screwing device, and the cap screwing device is used for opening the cover of the container.

6. The dairy heavy metal detection station of claim 2, wherein, The plasma mass spectrometer comprises a detection chamber and a sample injection mechanism. The detection chamber is provided with a chamber opening, and the sample injection mechanism comprises a base and a centrifugal tube rack, the base is arranged outside the chamber opening, and the centrifugal tube rack is movably arranged on the base to enter and exit the detection chamber; and the second mechanical arm is used for transferring the first centrifugal tube and the second centrifugal tube to the centrifugal tube rack respectively.

7. The dairy heavy metal detection station of claim 2, wherein, Further comprising a first waste liquid treatment device, and the second mechanical arm is further used for transferring the first centrifugal tube, the second centrifugal tube and the digestion tube to the first waste liquid treatment device after detection is completed, and the first waste liquid treatment device is used for collecting and treating waste liquid in the first centrifugal tube, the second centrifugal tube and the digestion tube.

8. The dairy heavy metal detection station of claim 1, wherein, Further comprising a feeding device and a feeding buffer device; the feeding device is arranged at a feeding position of the dairy product heavy metal detection work station, and the feeding device is used for transferring the container containing the dairy product from an external line to the feeding buffer device, and the feeding buffer device is used for buffering the container.

9. The dairy heavy metal detection station of claim 8, wherein, The feeding device comprises a feeding mechanical arm and a code scanning device. The feeding mechanical arm is used for transferring the container of the external line to the feeding buffer device, and transferring the container to a corresponding position of the code scanning device, so as to scan and identify the identification code on the container through the code scanning device.

10. The dairy heavy metal detection station of claim 1, wherein, Further comprising a second waste liquid treatment device, and the transfer device is further used for transferring the container after sampling to the second waste liquid treatment device, and the second waste liquid treatment device is used for collecting and treating waste liquid in the container.

Images