Dairy heavy metal detection workstation

Abstract

This invention relates to the field of sample testing technology, and provides a dairy product heavy metal detection workstation, comprising: a shaking device, a reagent buffer device, a digestion device, an inductively coupled plasma mass spectrometer (ICP-MS), and a transfer device. The shaking device is used to shake the container containing the dairy product. The transfer device is used to sample from the container, transfer the sampled dairy product to a digestion tube, and transfer the digestion tube containing the dairy product sample to the digestion device. The digestion device is used to digest the dairy product sample to obtain a mixture. The transfer device is used to sample the mixture and transfer the sampled mixture to a first centrifuge tube. The reagent buffer device is used to store a second centrifuge tube containing standard solutions. The ICP-MS is used to detect the mixture sample and the standard solutions to obtain the heavy metal content in the dairy product. This dairy product heavy metal detection workstation of the present invention can automate the detection of heavy metal content, has high detection efficiency, and saves manpower.

Description

Technical Field

[0001] This invention relates to the field of sample testing technology, and in particular to a workstation for detecting heavy metals in dairy products. Background Technology

[0002] Heavy metal testing is typically required during the production of dairy products. Currently, the entire heavy metal testing process for dairy products usually requires manual operation by testing personnel, resulting in a complex process and low efficiency. Summary of the Invention

[0003] This invention provides a dairy product heavy metal detection workstation to solve the shortcomings of existing technologies in dairy product metal detection processes, which require manual operation, have complex processes, and have low detection efficiency.

[0004] This invention provides a workstation for heavy metal detection in dairy products, comprising: 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 to oscillate the container containing dairy products, and the transfer device is used to take a sample from the container, transfer the sampled dairy product sample to a digestion tube, and transfer the digestion tube containing the dairy product sample to the digestion device. The digestion device is used to mix the digestion agent with the dairy product sample based on the digestion tube and digest the sample to obtain a mixture; the transfer device is used to sample the mixture and transfer the sampled mixture to a first centrifuge tube. The reagent buffer device is used to store the second centrifuge tube containing the standard solution for heavy metal comparison testing, and the transfer device is used to transfer the first centrifuge tube and the second centrifuge tube to the plasma mass spectrometer, respectively. The plasma mass spectrometer is used to detect the mixed liquid sample and the standard solution to obtain the heavy metal content in the dairy product.

[0005] According to the dairy product heavy metal detection workstation of the present invention, the transfer device includes a first robotic arm, a second robotic arm, a first pipetting device, and a second pipetting device; The first robotic arm is used to pick up the digestion tube and the container containing the dairy product respectively, and place the digestion tube and the container in the first pipetting device; the first pipetting device is used to take a sample from the container and transfer the sampled dairy product sample to the digestion tube; the first robotic arm is also used to transfer the digestion tube containing the dairy product sample to the digestion device; The second robotic arm is used to pick up the first centrifuge tube and the digestion tube containing the digested mixture, and place the first centrifuge tube and the digestion tube into the second pipetting device; the second pipetting device is used to take a sample from the digestion tube and transfer the sampled mixture sample to the first centrifuge tube; the second robotic arm is also used to transfer the first centrifuge tube and the second centrifuge tube to the plasma mass spectrometer, respectively.

[0006] According to the dairy product heavy metal detection workstation of the present invention, the first liquid transfer device includes a first liquid dispensing stage, a first liquid dispensing manipulator and a balance; the first liquid dispensing manipulator is disposed on the first liquid dispensing stage and is electrically connected to the balance. The first robotic arm is used to place the container containing the dairy product on the first dispensing platform and place the digestion tube on the balance. The balance is used to measure the weight of the digestion tube and its contents and provide feedback to the first dispensing robotic arm. The first dispensing robotic arm is used to take a sample from the container based on the measurement data of the balance and quantitatively transfer the sampled dairy product sample to the digestion tube on the balance.

[0007] According to the dairy product heavy metal detection workstation of the present invention, the second liquid transfer device includes a second dispensing stage and a second dispensing robot; the second dispensing robot is disposed on the second dispensing stage; The second robotic arm is used to place the first centrifuge tube and the digestion tube containing the mixture on the second dispensing stage; the second dispensing robotic arm is used to take a sample from the digestion tube and transfer the sampled mixture sample to the first centrifuge tube.

[0008] According to the dairy product heavy metal detection workstation of the present invention, the oscillation device includes: an oscillation device and a capping device; The oscillation device is used to oscillate the container containing dairy products, and the first robotic arm is also used to transfer the container from the oscillation device to the capping device, which is used to open the lid of the container.

[0009] According to the dairy product heavy metal detection workstation of the present invention, the plasma mass spectrometer includes a detection chamber and a sample introduction mechanism; The detection chamber is provided with a chamber opening; the sample injection mechanism includes a base and a centrifuge tube rack, the base is located outside the chamber opening, and the centrifuge tube rack is movably disposed on the base to enter and exit the detection chamber; the second robotic arm is used to transfer the first centrifuge tube and the second centrifuge tube to the centrifuge tube rack respectively.

[0010] The dairy product heavy metal testing workstation according to the present invention further includes a first waste liquid treatment device, and the second robotic arm is further used to transfer the first centrifuge tube, the second centrifuge tube and the digestion tube to the first waste liquid treatment device after the testing is completed. The first waste liquid treatment device is used to collect and treat the waste liquid in the first centrifuge tube, the second centrifuge tube and the digestion tube.

[0011] The dairy product heavy metal detection workstation according to the present invention further includes a feeding device and a feeding buffer device; the feeding device is disposed at the feeding position of the dairy product heavy metal detection workstation, the feeding device is used to transfer the container containing the dairy product from the external line to the feeding buffer device, and the feeding buffer device is used to buffer the container.

[0012] According to the dairy product heavy metal detection workstation of the present invention, the feeding equipment includes: a feeding robot and a barcode scanning device; The loading robot is used to transfer the container of the external line to the loading buffer device and to the corresponding position of the scanning device so that the identification code on the container can be scanned and identified by the scanning device.

[0013] The dairy product heavy metal testing workstation according to the present invention further includes a second waste liquid treatment device, wherein the transfer device is further used to transfer the sampled container to the second waste liquid treatment device, and the second waste liquid treatment device is used to collect and treat the waste liquid in the container.

[0014] This invention relates to a dairy product heavy metal detection workstation. The workstation uses a shaking device to agitate the dairy product to be tested, facilitating sample collection via a transfer device. A digestion device then adds a digesting agent to the agitated sample and digests it, ensuring that the metal elements in the sample exist in ionic form. The digested mixture is then sampled and transferred to a first centrifuge tube. The first centrifuge tube and a second centrifuge tube containing a standard solution are then transferred to an inductively coupled plasma mass spectrometer (ICP-MS) for comparative analysis. This process ultimately yields the heavy metal content of the dairy product, allowing for the determination of whether the heavy metal content exceeds the standard. Simultaneously, the transfer device enables automatic transfer of containers and solutions between different devices during the detection process, automating the entire testing process without manual operation, resulting in high efficiency and reduced labor costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this invention 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 invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is one of the schematic diagrams of the dairy product heavy metal detection workbench provided in the embodiments of the present invention.

[0017] Figure 2 This is a top view of the dairy product heavy metal detection workbench provided in an embodiment of the present invention.

[0018] Figure 3 This is the second schematic diagram of the dairy product heavy metal detection workbench provided in the embodiment of the present invention.

[0019] Figure label: 1. Vibrating equipment; 11. Vibrating device; 12. Capping device; 2. Reagent caching equipment; 3. Digestion equipment; 4. Inductively coupled plasma mass spectrometer; 41. Detection chamber; 42. Sample introduction mechanism; 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; 6. First waste liquid treatment device; 7. Feeding equipment; 71. Feeding robot; 72. Barcode scanning device; 8. Feeding and buffering device; 9. Second waste liquid treatment device; 101. Unit cover; 102. Exhaust unit. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0021] The following is combined with Figures 1-3 The present invention describes a dairy product heavy metal detection workstation.

[0022] like Figure 1 and Figure 2 As shown, this invention provides a workstation for detecting heavy metals in dairy products, comprising: an oscillation device 1, a reagent buffer device 2, a digestion device 3, an inductively coupled plasma mass spectrometer 4, and a transfer device 5. The oscillation device 1 is used to oscillate containers containing dairy products. The transfer device 5 is used to sample from the containers, transfer the sampled dairy product to a digestion tube, and then transfer the digestion tube containing the dairy product sample to the digestion device 3. The digestion device 3 is used to mix the digesting agent with the dairy product sample in the digestion tube and perform digestion to obtain a mixture. The transfer device 5 is used to sample the mixture and transfer the sampled mixture to a first centrifuge tube. The reagent buffer device 2 is used to store a second centrifuge tube containing a standard solution for heavy metal comparison testing. The transfer device 5 is used to transfer the first and second centrifuge tubes to the inductively coupled plasma mass spectrometer 4, respectively. The inductively coupled plasma mass spectrometer 4 is used to detect the mixture sample and the standard solution to obtain the heavy metal content in the dairy products.

[0023] It is understood that the transfer device 5 in this embodiment is equipped with both a transfer device for transferring containers (including but not limited to centrifuge tubes, digestion tubes, etc.) and a transfer device for transferring liquids only (such as pipettes), so that it can transfer containers between different devices and transfer liquids between different containers.

[0024] The oscillation device 1 in this embodiment is used to oscillate a container holding dairy products, so that the dairy products in the container are shaken evenly for subsequent processing.

[0025] After shaking, transfer device 5 is inserted into the container to extract a certain amount of dairy product sample according to the testing requirements, and transfers the dairy product sample to a digestion tube, which is then transferred to digestion device 3. Digestion device 3 can add a digesting agent (such as hydrochloric acid, nitric acid, hydrofluoric acid, etc.) to the dairy product sample in the digestion tube. The digesting agent can destroy the organic matter in the dairy product sample, release metal elements, and make them exist in ionic form. Understandably, digestion device 3 can also heat the mixture of digesting agent and dairy product sample (usually using microwave heating) to improve the digestion rate. After digestion, transfer device 5 is inserted into the digestion tube to sample the mixture, and the sampled mixture is transferred to the first centrifuge tube.

[0026] In this embodiment, the reagent buffer device 2 is used to store the second centrifuge tube containing the standard solution. It is understood that the standard solution can be prepared in advance according to the type of heavy metal element to be detected and stored in the second centrifuge tube for use. During detection, the transfer device 5 transfers the first centrifuge tube containing the mixed sample to be tested and the second centrifuge tube containing the standard solution to the plasma mass spectrometer 4, respectively. The plasma mass spectrometer 4 can detect the heavy metal ion concentrations in the mixed sample and the standard solution, and plot corresponding detection curves. By comparing the detection curves of the mixed sample and the standard solution, the heavy metal content in the mixed sample can be obtained, thereby determining the heavy metal content in the dairy product sample and whether the heavy metal content in the dairy product exceeds the standard.

[0027] The dairy product heavy metal detection workstation of this invention uses an oscillation device 1 to agitate and mix the dairy product to be tested, which is then sampled by a transfer device 5. Next, a digestion device 3 adds a digesting agent to the agitated dairy product sample and digests it, ensuring that the metal elements in the sample exist in ionic form. The digested mixture is then sampled by the transfer device 5 and transferred to a first centrifuge tube. The first centrifuge tube and a second centrifuge tube containing a standard solution are then transferred to an inductively coupled plasma mass spectrometer 4 for comparison and detection, ultimately obtaining the heavy metal content of the dairy product to determine whether the heavy metal content exceeds the standard. Simultaneously, the transfer device 5 enables automatic transfer of containers and solutions between different devices during the detection process, automating the entire detection process without manual operation, resulting in high detection efficiency and saving manpower.

[0028] Understandably, the standard solution is a solution containing one or more heavy metal elements of known concentration, prepared according to the detection requirements. It can be used to calibrate the plasma mass spectrometer 4 or to be used by the plasma mass spectrometer 4 to detect and plot calibration curves during the quantitative analysis of samples.

[0029] In some embodiments, such as Figure 1 and Figure 2As shown, the transfer device 5 includes a first robotic arm 51, a second robotic arm 52, a first pipetting device 53, and a second pipetting device 54. The first robotic arm 51 is used to pick up a digestion tube and a container containing dairy products, respectively, and place them in the first pipetting device 53. The first pipetting device 53 is used to take a sample from the container and transfer the sampled dairy product to the digestion tube. The first robotic arm 51 is also used to transfer the digestion tube containing the dairy product sample to the digestion device 3. The second robotic arm 52 is used to pick up a first centrifuge tube and a digestion tube containing the digested mixture, respectively, and place them in the second pipetting device 54. The second pipetting device 54 is used to take a sample from the digestion tube and transfer the sampled mixture to the first centrifuge tube. The second robotic arm 52 is also used to transfer the first centrifuge tube and the second centrifuge tube to the plasma mass spectrometer 4, respectively.

[0030] In this embodiment, the first robotic arm 51 is equipped with an end effector (such as a clamping mechanism) capable of picking up and dissolving tubes, containers containing dairy products, and other vessels. After the oscillation device 1 completes oscillation, the robotic arm 51 transfers the container containing dairy products and the empty digestion tube to the first pipetting device 53. The first pipetting device 53 is used to insert into the container of dairy products to sample the dairy products and inject the obtained dairy product sample into the empty digestion tube. After sampling is completed, the first robotic arm 51 removes the digestion tube from the first pipetting device 53 and transfers it to the digestion device 3. The digestion device 3 automatically adds a digesting agent to the dairy product sample in the digestion tube and performs digestion treatment.

[0031] In this embodiment, the second robotic arm 52 is also equipped with an end effector capable of picking up digestion tubes, containers containing dairy products, and other vessels. This allows it to transfer the digestion tube and the empty first centrifuge tube to the second pipetting device 54 after digestion. The second pipetting device 54 can extend into the digestion tube to sample the digested mixture and transfer the sampled mixture to the first centrifuge tube for analysis in the plasma mass spectrometer 4. After sampling, the second robotic arm 52 transfers the first centrifuge tube containing the mixed sample and the second centrifuge tube containing the standard solution to the plasma mass spectrometer 4 for analysis.

[0032] In one specific embodiment, such as Figure 1 and Figure 2As shown, the dairy product heavy metal testing workstation also includes a digestion tube buffer tray, and the transfer device 5 includes a third robotic arm 55, a first digestion tube placement platform 56, and a second digestion tube placement platform 57. The third robotic arm 55 is positioned between the first robotic arm 51 and the second robotic arm 52, the first digestion tube placement platform 56 is positioned between the first robotic arm 51 and the third robotic arm 55, and the second digestion tube placement platform 57 is positioned between the third robotic arm 55 and the second robotic arm 52. The third robotic arm 55 is used to pick up empty digestion tubes from the digestion tube buffer tray and place them on the first digestion tube placement platform 56 for the first robotic arm 51 to use. After digestion, the third robotic arm 55 can transfer the digestion tube containing the digested mixture to the second digestion tube placement platform 57 for the second robotic arm 52 to use.

[0033] Understandably, the digestion tube buffer tray can be used to buffer the digestion rack, which holds multiple digestion tubes. The third robotic arm 55 can directly place the digestion rack on the first digestion tube placement platform 56 so that the first robotic arm 51 can retrieve it.

[0034] In some embodiments, such as Figure 1 and Figure 2 As shown, the first pipetting device 53 includes a first dispensing stage 531, a first dispensing manipulator 532, and a balance 533. The first dispensing manipulator 532 is disposed on the first dispensing stage 531 and is electrically connected to the balance 533. The first manipulator 51 is used to place a container containing dairy products on the first dispensing stage 531 and place a digestion tube on the balance 533. The balance 533 is used to measure the weight of the digestion tube and its contents and provide feedback to the first dispensing manipulator 532. The first dispensing manipulator 532 is used to take a sample from the container based on the measurement data of the balance 533 and quantitatively transfer the sampled dairy product to the digestion tube on the balance 533.

[0035] In this embodiment, before sampling the shaken and mixed dairy product, the first robotic arm 51 places the container containing the dairy product on the first dispensing stage 531 and places the empty digestion tube on the balance 533. After the balance 533 holds the empty digestion tube, it weighs and records the weight of the empty digestion tube so that the weight of the dairy product sample in the digestion tube can be calculated during the subsequent addition of the dairy product sample; alternatively, after the balance 533 holds the empty digestion tube, it resets the detected weight data to zero to achieve tare processing, and the detection reading of the balance 533 can directly reflect the weight of the dairy product sample in the digestion tube during the subsequent addition of the dairy product sample. Next, the end effector of the first dispensing robotic arm 532 can extend into the container to sample the dairy product and transfer the obtained dairy product sample to the digestion tube on the balance 533.

[0036] During the sampling process, the balance 533 can detect the weight of the digestion tube and its contents in real time and feed this weight information back to the first dispensing robot 532. The control system of the first dispensing robot 532 can obtain the weight of the dairy product sample in the digestion tube in real time based on this weight information, and control the first dispensing robot 532 to quantitatively add the sample to the digestion tube according to the sampling weight preset according to the testing requirements. No manual operation is required, and the sampling is more accurate and reliable.

[0037] Specifically, in some embodiments, a first tube cap clamping mechanism is installed on the first dispensing stage 531. Before placing the digestion tube on the balance 533, the first robotic arm 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 tube cap or rubber stopper of the digestion tube. The first robotic arm 51 then unscrews the tube cap or rubber stopper of the digestion tube, and then the first robotic arm 51 places the decapped digestion tube on the balance 533 for sample addition. After digestion is completed, the first tube cap clamping mechanism can also work with the first robotic arm 51 to recap the digestion tube containing the mixed liquid.

[0038] In some embodiments, such as Figure 1 and Figure 2 As shown, the second pipetting device 54 includes a second dispensing stage 541 and a second dispensing manipulator 542. The second dispensing manipulator 542 is disposed on the second dispensing stage 541. The second manipulator 542 is used to place the first centrifuge tube and the digestion tube containing the mixture onto the second dispensing stage 541. The second dispensing manipulator 542 is used to take a sample from the digestion tube and transfer the sampled mixture to the first centrifuge tube.

[0039] In this embodiment, after digestion is completed, the second robotic arm 52 will first place the digestion tube containing the mixture and the empty first centrifuge tube on the second dispensing stage 541. Then, the end effector of the second dispensing robotic arm 542 can extend into the digestion tube to sample the mixture and transfer the obtained dairy product sample to the first centrifuge tube for subsequent detection by the plasma mass spectrometer 4.

[0040] Specifically, in some embodiments, a second tube cap clamping mechanism is installed on the second dispensing platform 541. Before placing the digestion tube on the second dispensing platform 541, the second robotic arm 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 tube cap or rubber stopper of the digestion tube, and cooperates with the second robotic arm 52 to unscrew the tube cap or rubber stopper of the digestion tube, and cooperate with the second robotic arm 52 to recap the digestion tube when necessary in subsequent processes.

[0041] Specifically, in some embodiments, the end effector of the first dispensing robot 532 and the end effector of the second dispensing robot 542 are both pipettes. The pipettes have detachable pipette tips and are capable of aspirating solutions from the tips for liquid transfer. The dairy product heavy metal testing workstation also includes a holder for buffering pipette tips.

[0042] In some embodiments, such as Figure 1 and Figure 2 As shown, the oscillation device 1 includes an oscillation device 11 and a capping device 12. The oscillation device 11 is used to oscillate a container containing dairy products, and the first robotic arm 51 is also used to transfer the container from the oscillation device 11 to the capping device 12, which is used to open the lid of the container.

[0043] In this embodiment, after the oscillation device 11 completes the oscillation of the container, the first robotic arm 51 can transfer the container to the capping device 12, which is used to open the container's cap so that the dairy products inside the container can be sampled subsequently.

[0044] In some embodiments, such as Figure 1 and Figure 2 As shown, the plasma mass spectrometer 4 includes a detection chamber 41 and a sample introduction mechanism 42. The detection chamber 41 is provided with a chamber opening. The sample introduction mechanism 42 includes a base and a centrifuge tube rack. The base is located outside the chamber opening, and the centrifuge tube rack is movably mounted on the base to enter and exit the detection chamber 41. A second robotic arm 52 is used to transfer the first centrifuge tube and the second centrifuge tube to the centrifuge tube rack, respectively.

[0045] In this embodiment, a sample introduction mechanism 42 is provided at the opening of the detection chamber 41. The sample introduction mechanism 42 includes a fixed base and a movable centrifuge tube rack. During detection, the second robotic arm 52 can place the first centrifuge tube containing the mixed solution and the second centrifuge tube containing the standard solution on the centrifuge tube rack. The centrifuge tube rack moves to send the first centrifuge tube and the second centrifuge tube into the detection chamber 41. After the detection is completed in the detection chamber 41, the centrifuge tube rack exits the detection chamber 41 for subsequent processing.

[0046] In some embodiments, such as Figure 1 and Figure 2 As shown, the dairy product heavy metal testing workstation also includes a first waste liquid treatment device 6. The second robotic arm 52 is also used to transfer the first centrifuge tube, the second centrifuge tube and the digestion tube to the first waste liquid treatment device 6 after the testing is completed. The first waste liquid treatment device 6 is used to collect and treat the waste liquid in the first centrifuge tube, the second centrifuge tube and the digestion tube.

[0047] In this embodiment, after the test is completed, there is still solution remaining in the first centrifuge tube, the second centrifuge tube, and the digestion tube. The second robotic arm 52 can transfer the first centrifuge tube, the second centrifuge tube, and the digestion tube to the first waste liquid treatment device 6 and pour the residual liquid in the tubes into the first waste liquid treatment device 6 for subsequent centralized treatment and discharge of waste liquid.

[0048] In some embodiments, the dairy product heavy metal testing workstation further includes a buffer tray corresponding to the first centrifuge tube, the second centrifuge tube, and the digestion tube, for buffering the first centrifuge tube, the second centrifuge tube, and the digestion tube after the waste liquid has been poured out, so as to centrally clean and recycle the first centrifuge tube, the second centrifuge tube, and the digestion tube.

[0049] In some embodiments, such as Figure 1 and Figure 2 As shown, the dairy product heavy metal testing workstation also includes a feeding device 7 and a feeding buffer device 8. The feeding device 7 is located at the feeding position of the dairy product heavy metal testing workstation. The feeding device 7 is used to transfer containers containing dairy products from the external line to the feeding buffer device 8, which is used to buffer the containers.

[0050] In this embodiment, the feeding device 7 is used to pick up containers containing dairy products conveyed from the external line and transfer the containers to the feeding buffer device 8, thereby realizing the automatic online loading and buffering of dairy products to be tested, so that the dairy products to be tested can be tested later.

[0051] Specifically, in some embodiments, such as Figure 1 and Figure 2 As shown, the loading device 7 includes a loading robot 71 and a barcode scanning device 72. The loading robot 71 is used to transfer containers from the external production line to the loading buffer device 8 and to the corresponding position of the barcode scanning device 72 so that the barcode scanning device 72 can scan and identify the identification code on the container.

[0052] In this embodiment, the loading robot 71 can pick up containers containing dairy products to be tested from the external production line and place them on the loading buffer device 8 for buffering. At the start of testing, the loading robot 71 can transfer the containers from the loading buffer device 8 to the scanning end of the barcode scanner 72 for identification. The barcode scanner 72 can determine the types of heavy metal elements to be tested and the testing process based on the identification code on the container. This allows the dairy product heavy metal testing workstation to monitor the testing process and facilitates the traceability of test results by testing personnel. Specifically, the identification code typically stores information such as the batch number of the dairy products to be tested, so that testing personnel can trace and handle the batch of dairy products when the test results show that the heavy metal content exceeds the standard.

[0053] In some embodiments, such as Figure 1 and Figure 2 As shown, the dairy product heavy metal testing workstation also includes a second waste liquid treatment device 9. The transfer device 5 is also used to transfer the sampled container to the second waste liquid treatment device 9, which is used to collect and treat the waste liquid in the container.

[0054] In this embodiment, after sampling the dairy products to be tested in the container, there are usually still dairy products remaining in the container. The transfer device 5 can transfer the container to the second waste liquid treatment device 9 and pour the remaining dairy products in the tube into the second waste liquid treatment device 9 so that the waste liquid can be centrally treated and discharged in the future.

[0055] In some embodiments, the dairy product heavy metal detection workstation is also equipped with an AGV (Automated Guided Vehicle). After a certain number of tests, the used containers, the first centrifuge tube, the second centrifuge tube, and the digestion tube can be transferred to the AGV and transported by the AGV to the cleaning workstation for centralized cleaning. The cleaned containers can then be reused.

[0056] In some embodiments, such as Figure 3 As shown, the dairy product heavy metal testing workstation also includes a housing 101. The housing 101 is fastened to the top of the shaking device 1, reagent buffer device 2, digestion device 3, plasma mass spectrometer 4, and transfer device 5 to ensure a sterile environment inside the housing 101. A cabinet door is formed on the side of the housing 101, facilitating adjustment of the various devices inside. An opening is provided in the housing 101 corresponding to the position of the shaking device 1, allowing for easy connection with an AGV or external conveyor line for material loading.

[0057] Specifically, the cabinet door can be a glass door to allow for better observation of the interior of the hood 101.

[0058] Furthermore, in some embodiments, the dairy product heavy metal testing workstation also includes an exhaust unit 102. The exhaust unit 102 is located on top of the hood 101. This exhaust unit 102 can exhaust stale air inside the hood 101 using a power system such as a motor, thereby improving the testing environment.

[0059] Furthermore, in some embodiments, the dairy product heavy metal detection workstation also includes a host computer and an alarm light. The host computer is located on the outside of the housing 101 and is communicatively connected to the oscillation device 1, reagent buffer device 2, digestion device 3, plasma mass spectrometer 4, and transfer device 5. The host computer is used to control the various devices inside the housing 101. The alarm light is located on the top of the housing 101 and is communicatively connected to the host computer. The alarm light is used to indicate the working status of the dairy product heavy metal detection workstation through different colored lights, so as to prompt the staff to carry out maintenance as soon as possible when the dairy product heavy metal detection workstation malfunctions.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heavy metal detection workstation for dairy products, characterized in that, include: Shaking equipment, reagent buffer equipment, digestion equipment, plasma mass spectrometer, and transfer equipment; The oscillation device is used to oscillate the container containing dairy products, and the transfer device is used to take a sample from the container, transfer the sampled dairy product sample to a digestion tube, and transfer the digestion tube containing the dairy product sample to the digestion device. The digestion device is used to mix the digestion agent with the dairy product sample based on the digestion tube and digest the sample to obtain a mixture; the transfer device is used to sample the mixture and transfer the sampled mixture to a first centrifuge tube. The reagent buffer device is used to store the second centrifuge tube containing the standard solution for heavy metal comparison testing, and the transfer device is used to transfer the first centrifuge tube and the second centrifuge tube to the plasma mass spectrometer, respectively. The plasma mass spectrometer is used to detect the mixed liquid sample and the standard solution to obtain the heavy metal content in the dairy product.

2. The dairy heavy metal detection station of claim 1, wherein, The transfer device includes a first robotic arm, a second robotic arm, a first pipetting device, and a second pipetting device; The first robotic arm is used to pick up the digestion tube and the container containing the dairy product respectively, and place the digestion tube and the container in the first pipetting device; the first pipetting device is used to take a sample from the container and transfer the sampled dairy product sample to the digestion tube; the first robotic arm is also used to transfer the digestion tube containing the dairy product sample to the digestion device; The second robotic arm is used to pick up the first centrifuge tube and the digestion tube containing the digested mixture, and place the first centrifuge tube and the digestion tube into the second pipetting device; the second pipetting device is used to take a sample from the digestion tube and transfer the sampled mixture sample to the first centrifuge tube; the second robotic arm is also used to transfer the first centrifuge tube and the second centrifuge tube to the plasma mass spectrometer, respectively.

3. The dairy heavy metal detection station of claim 2, wherein, The first pipetting device includes a first dispensing stage, a first dispensing manipulator, and a balance; the first dispensing manipulator is disposed on the first dispensing stage and is electrically connected to the balance; The first robotic arm is used to place the container containing the dairy product on the first dispensing platform and place the digestion tube on the balance. The balance is used to measure the weight of the digestion tube and its contents and provide feedback to the first dispensing robotic arm. The first dispensing robotic arm is used to take a sample from the container based on the measurement data of the balance and quantitatively transfer the sampled dairy product sample to the digestion tube on the balance.

4. The dairy heavy metal detection station of claim 3, wherein, The second pipetting device includes a second dispensing stage and a second dispensing manipulator; the second dispensing manipulator is disposed on the second dispensing stage; The second robotic arm is used to place the first centrifuge tube and the digestion tube containing the mixture on the second dispensing stage; the second dispensing robotic arm is used to take a sample from the digestion tube and transfer the sampled mixture sample to the first centrifuge tube.

5. The dairy heavy metal detection station of claim 2, wherein, The oscillation device includes: an oscillation unit and a capping device; The oscillation device is used to oscillate the container containing dairy products, and the first robotic arm is also used to transfer the container from the oscillation device to the capping device, which is used to open the lid of the container.

6. The dairy heavy metal detection station of claim 2, wherein, The plasma mass spectrometer includes a detection chamber and a sample introduction mechanism; The detection chamber is provided with a chamber opening; the sample injection mechanism includes a base and a centrifuge tube rack, the base is located outside the chamber opening, and the centrifuge tube rack is movably disposed on the base to enter and exit the detection chamber; the second robotic arm is used to transfer the first centrifuge tube and the second centrifuge tube to the centrifuge tube rack respectively.

7. The dairy heavy metal detection station of claim 2, wherein, It also includes a first waste liquid treatment device, and the second robotic arm is also used to transfer the first centrifuge tube, the second centrifuge tube and the digestion tube to the first waste liquid treatment device after the test is completed. The first waste liquid treatment device is used to collect and treat the waste liquid in the first centrifuge tube, the second centrifuge tube and the digestion tube.

8. The dairy heavy metal detection station of claim 1, wherein, It also includes a feeding device and a feeding buffer device; the feeding device is located at the feeding position of the dairy product heavy metal detection workstation, and the feeding device is used to transfer the container containing the dairy product from the external line to the feeding buffer device, and the feeding buffer device is used to buffer the container.

9. The dairy heavy metal detection station of claim 8, wherein, The feeding equipment includes: a feeding robot and a barcode scanning device; The loading robot is used to transfer the container of the external line to the loading buffer device and to the corresponding position of the scanning device so that the identification code on the container can be scanned and identified by the scanning device.

10. The dairy heavy metal detection station of claim 1, wherein, It also includes a second waste liquid treatment device, and the transfer device is further used to transfer the sampled container to the second waste liquid treatment device, which is used to collect and treat the waste liquid in the container.

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