A food heavy metal component detection device

Abstract

This invention discloses a food heavy metal component detection device, belonging to the technical field of food testing equipment. The invention includes a disinfection cabinet, on the top of which is fixedly installed an X-ray fluorescence spectrometer, an electric sliding door, and a sealing cover. The electric sliding door is located between the X-ray fluorescence spectrometer and the sealing cover, with both ends of the electric sliding door communicating with the interior of the X-ray fluorescence spectrometer and the sealing cover, respectively. This invention utilizes a sample transfer mechanism. The sample transfer mechanism places a sample cup on a flat pressure seat, then inserts a round cover for sealing. A steering motor then drives the round cover to compact the powder. Finally, the electric sliding door opens, and the sample transfer mechanism delivers the pre-prepared sample cup into the sample chamber of the X-ray fluorescence spectrometer for detection. This completes the fully automated pretreatment and heavy metal component detection of the sample, integrating multiple processes, reducing working time, eliminating multiple manual operations, and avoiding transportation risks.

Description

Technical Field

[0001] This invention relates to the field of food testing equipment technology, specifically to a food heavy metal component testing device. Background Technology

[0002] The rapid detection method of X-ray fluorescence spectroscopy is suitable for the rapid determination of cadmium, lead, and total arsenic in rice (flour), corn (flour), and wheat (flour). Its main principle is to use a monochromatic focusing energy dispersive X-ray fluorescence spectrometer, which, after high-energy X-ray excitation, obtains the characteristic X-ray fluorescence of cadmium (Cd), lead (Pb), and arsenic (As) in the sample. The intensity of the X-ray fluorescence signal is related to the content of the element to be measured. Based on the change in fluorescence intensity and the built-in standard curve, the content of cadmium (Cd), lead (Pb), and arsenic (As) is automatically calculated for qualitative determination.

[0003] Currently, grain processing manufacturers need to prepare their own testing equipment to carry out testing work in accordance with the relevant methods for the detection of heavy metal components in grains in the "Food Testing Methods". However, in actual application scenarios, the sample preparation work such as crushing and weighing of grain samples and subsequent testing work are carried out independently using equipment such as high-speed crushers, electronic balances and monochromatic focusing energy dispersive X-ray fluorescence spectrometers. Multiple processes are carried out independently, and manual transfer is required. In particular, the compaction of sample powder needs to be manually operated with a sample push rod, which makes it difficult to strictly follow the operating standards in the testing methods, resulting in the test results not matching the actual situation. Therefore, a food heavy metal component detection device is proposed. Summary of the Invention

[0004] The purpose of this invention is to address the problem that current grain processing manufacturers often fail to strictly adhere to the operational standards in testing methods, resulting in measurement results that do not conform to reality. This invention provides a food heavy metal component detection device.

[0005] To achieve the above objectives, the present invention specifically adopts the following technical solution: A food heavy metal component detection device includes a disinfection cabinet. An X-ray fluorescence spectrometer, an electric sliding door, and a sealed cover are fixedly installed on the top of the disinfection cabinet. The electric sliding door is located between the X-ray fluorescence spectrometer and the sealed cover, with both ends of the door communicating with the interior of the X-ray fluorescence spectrometer and the sealed cover, respectively. The sealed cover contains a pulverizing mechanism for rapid sample pulverization and an electronic balance for weighing samples. A feed pipe is provided on one side of the pulverizing mechanism, and a corresponding position to the bottom of the feed pipe is fixedly installed on the top of the sensing end of the electronic balance. A measuring rack is provided, on which a sample cup is placed. A vacuum pump assembly is fixedly installed on one side of the sealed cover, and a vacuum pipe is fixedly installed at the inlet end of the vacuum pump assembly. A three-way valve is fixedly installed on the inner wall of one side of the sealed cover, and the outlet end of the three-way valve is connected to the vacuum pipe. A negative pressure pipe is fixedly installed at one of the inlets of the three-way valve, and the negative pressure pipe extends to the bottom of the sample cup. An intercepting mesh plate is fixedly installed at the bottom of the sample cup. A sample transfer mechanism is provided inside the sealed cover for sending the pre-made sample cup into the X-ray fluorescence spectrometer.

[0006] Furthermore, the pulverizing mechanism includes a high-speed pulverizer base disposed inside the sealed housing. A first interactive door adapted to the high-speed pulverizer base is slidably installed on one side of the sealed housing. A pulverizing dish is placed on the top of the high-speed pulverizer base, and a cover is placed on the top of the pulverizing dish. A sieve plate seat is fixedly installed on one side of the pulverizing dish. A clearance groove is opened on one side of the top of the high-speed pulverizer base, and the sieve plate seat is located inside the clearance groove. A standard sieve plate is slidably installed inside the sieve plate seat. The feed pipe is fixedly installed at one end of the sieve plate seat. A cutter holder is rotatably installed inside the pulverizing dish, and the bottom end of the cutter holder extends to the bottom of the pulverizing dish. A power cutter shaft adapted to the cutter holder is driven and installed on the top of the high-speed pulverizer base.

[0007] Furthermore, a pneumatic lifting platform is fixedly installed inside the sealed cover, and the high-speed crusher base is fixedly installed on the top of the movable end of the pneumatic lifting platform. An exhaust valve is fixedly installed on one side of the fixed end of the pneumatic lifting platform, and an exhaust pipe is fixedly installed on one end of the exhaust valve. One end of the exhaust pipe extends to the outside of the sealed cover and is connected to the air outlet of the air pump group.

[0008] Furthermore, a stabilizing frame is fixedly installed inside the sealing cover, and a stabilizing ring is fixedly installed at the top of the stabilizing frame. The stabilizing ring is sleeved on the high-speed crusher base, and multiple evenly distributed elastic pads are fixedly installed on the inner wall of the stabilizing ring.

[0009] Furthermore, a flexible lifting rod is fixedly installed on the top of the cover.

[0010] Furthermore, the sample transfer mechanism includes a horizontal linear module fixedly installed on the inner wall of the sealed cover, a vertical linear module fixedly installed on one side of the movable end of the horizontal linear module, a movable frame fixedly installed on one side of the movable end of the vertical linear module, a telescopic arm fixedly installed on the top of the movable frame, an assembly frame fixedly installed at the telescopic end of the telescopic arm horizontally facing the electric sliding door, and clamping arms adapted to the sample cup rotatably installed on both sides of the assembly frame, and a control motor assembly fixedly installed on one side of the assembly frame, the output end of the control motor assembly being drivenly connected to the clamping arm.

[0011] Furthermore, a gearbox is fixedly installed at the bottom of the assembly frame, and a steering motor is fixedly installed at the top of the gearbox. The output end of the steering motor is driven and connected to the input end of the gearbox. An adsorption tube is rotatably installed at the bottom of the assembly frame, and the output end of the gearbox is driven and connected to the adsorption tube. A pressure dividing tube is fixedly installed on one side of the assembly frame. One end of the pressure dividing tube is connected to the adsorption tube, and the other end of the pressure dividing tube is connected to the other air inlet of the three-way air valve. A push-pull groove and a flat pressure seat are fixedly installed inside the sealing cover. A storage cylinder is slidably installed inside the push-pull groove. Multiple round cover plates that are compatible with the sample cup are stacked inside the storage cylinder. The flat pressure seat is compatible with the sample cup.

[0012] Furthermore, a sliding frame is fixedly installed on one side of the storage tube, and the sliding frame is slidably installed inside the push-pull groove. A first interaction hole and a second interaction hole are opened on one side of the sealing cover. The electronic balance is fixedly installed inside the first interaction hole. One end of the sliding frame extends into the inside of the second interaction hole and is fixedly installed with a magnetic pull plate. A second interaction door is provided on one side of the sealing cover.

[0013] The beneficial effects of this invention are as follows: 1. This invention, by setting up a sample transfer mechanism, places the sample cup on a flat pressure seat, then places a round cover on top of the sample cup to seal it. Then, a steering motor drives the round cover to rotate until the top of the powder is flattened and the powder is compacted. Finally, the electric sliding door opens, and the sample transfer mechanism sends the pre-made sample cup into the sample chamber of the X-ray fluorescence spectrometer for detection, completing the fully automatic pretreatment of the sample and the detection of heavy metal components. Multiple processes are integrated, reducing working time, eliminating many manual operations, and avoiding transfer risks. 2. This invention, through the setting of a pulverizing mechanism, allows the first interactive door to be opened and the pulverizing dish and cap to be removed. The sample cup is placed on the measuring rack, the cap is opened and placed into the pulverizing dish, and then the pulverizing dish and cap are placed back on the high-speed pulverizer base, so that the bottom end of the blade holder is connected to the power blade shaft. At this time, one end of the feed tube is connected to the sample cup. Then the first interactive door is closed, and the high-speed pulverizer base is driven by the power blade shaft to start rotating at high speed, pulverizing the sample for a specified time, thereby achieving rapid pulverization of the sample. The pulverizing dish and the high-speed pulverizer base are separable, which makes it convenient to remove the pulverizing dish and cap that came into contact with the sample for cleaning after the batch of samples has been tested. 3. By setting up a pneumatic lifting platform, the air pump group pumps gas into the pneumatic lifting platform during the high-speed crushing process, causing the pneumatic lifting platform to lift the high-speed crusher base. This allows the elastic lifting rod at the top of the cover to contact the inner wall of the sealing cover, making the cover, crushing dish, and high-speed crusher base fit more tightly while providing elastic support in both directions. This significantly reduces the noise and transmitted vibration generated during the operation of the high-speed crusher base. The stabilizing ring can always contain the lateral vibration of the high-speed crusher base, reducing vibration in the horizontal direction. Attached Figure Description

[0014] Figure 1 This is a first-view three-dimensional structural diagram of the present invention; Figure 2 This is a two-dimensional structural diagram of the present invention from a second perspective; Figure 3 This is a schematic diagram of the internal three-dimensional structure of the sealing cover of the present invention; Figure 4 This is a three-dimensional structural diagram of the crushing mechanism of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the pulverizing dish of the present invention; Figure 6 This is a three-dimensional structural diagram of the high-speed pulverizer base of the present invention; Figure 7 This is a three-dimensional structural diagram of the pneumatic lifting platform of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the electronic balance and sample cup of the present invention. Figure 9 This is a schematic diagram of the internal three-dimensional structure of the sample cup of the present invention; Figure 10 This is a three-dimensional structural diagram of the sample transfer mechanism of the present invention; Figure 11 This is a three-dimensional structural diagram of the clamping arm and the adsorption tube of the present invention. Figure 12 This is a schematic diagram of the internal three-dimensional structure of the storage tube of the present invention; Figure reference numerals: 1. Disinfection cabinet; 101. First interactive door; 102. First interactive hole; 103. Second interactive hole; 104. Second interactive door; 2. X-ray fluorescence spectrometer; 3. Electric sliding door; 4. Sealing cover; 5. High-speed pulverizer base; 501. Clearing groove; 6. Pulverizing dish; 7. Cover; 8. Sieve plate base; 9. Standard sieve plate; 10. Feeding pipe; 11. Knife holder; 12. Powered knife shaft; 13. Electronic balance; 14. Measuring rack; 15. Sample cup; 1501. Interceptor plate; 16. Vacuum pump set; 17. Vacuum pipe; 18. Three-way valve. 19. Valve; 20. Negative pressure pipe; 21. Horizontal linear module; 22. Vertical linear module; 23. Moving frame; 24. Telescopic arm; 25. Assembly frame; 26. Clamping arm; 27. Control motor assembly; 28. Gearbox; 29. ​​Steering motor; 30. Adsorption pipe; 31. Pressure dividing pipe; 32. Storage cylinder; 33. Round cover; 34. Sliding frame; 35. Magnetic pull-out plate; 36. Pneumatic lifting platform; 37. Exhaust valve; 38. Exhaust pipe; 39. Elastic lifting rod; 40. Stabilizing frame; 41. Stabilizing ring; 42. Elastic pad; 43. Push-pull groove; 44. Flat pressure seat. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0017] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0018] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention 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 limiting the present invention.

[0019] like Figures 1 to 12 As shown, a food heavy metal component detection device includes a disinfection cabinet 1, such as... Figure 1 , Figure 2 , Figure 3 As shown, specifically, an X-ray fluorescence spectrometer 2, an electric sliding door 3, and a sealed cover 4 are fixedly installed on the top of the disinfection cabinet 1. The electric sliding door 3 is located between the X-ray fluorescence spectrometer 2 and the sealed cover 4. Both ends of the electric sliding door 3 are connected to the interior of the X-ray fluorescence spectrometer 2 and the sealed cover 4, respectively. The interior of the sealed cover 4 is equipped with a pulverizing mechanism for rapid sample pulverization and an electronic balance 13 for weighing samples. Figure 4 , Figure 5 , Figure 6 As shown, the crushing mechanism includes a high-speed crusher base 5 disposed inside a sealed cover 4. A first interactive door 101 adapted to the high-speed crusher base 5 is slidably installed on one side of the sealed cover 4. A crushing dish 6 is placed on the top of the high-speed crusher base 5, and a cover 7 is placed on the top of the crushing dish 6. A sieve plate seat 8 is fixedly installed on one side of the crushing dish 6. A clearance groove 501 is opened on one side of the top of the high-speed crusher base 5. The sieve plate seat 8 is located inside the clearance groove 501. A standard sieve plate 9 is slidably installed inside the sieve plate seat 8. A feed pipe 10 is fixedly installed at one end of the sieve plate seat 8. A knife holder 11 is rotatably installed inside the crushing dish 6. The bottom end of the knife holder 11 extends to the bottom of the crushing dish 6. A power cutter shaft 12 adapted to the knife holder 11 is driven and installed on the top of the high-speed crusher base 5.

[0020] In this embodiment, as Figure 3 , Figure 4 As shown, one end of the feed tube 10 is vertically downward and engages with the sample cup 15, while the other end is obliquely downward and connects with the sieve plate seat 8, so that the residual sample powder remains inside the feed tube 10 and does not leak from the bottom.

[0021] More specifically, before conducting heavy metal testing on food, the X-ray fluorescence spectrometer 2 is powered on, preheated, and automatically calibrated. A pulverizing mechanism is then set up to open the first interactive door 101 and remove the pulverizing dish 6 and the cap 7. The sample cup 15 is placed on the measuring rack 14, the cap 7 is opened and placed into the pulverizing dish 6, and then the pulverizing dish 6 and the cap 7 are placed back on the high-speed pulverizer base 5, so that the bottom end of the blade holder 11 aligns with the power blade shaft 12. At this time, one end of the feed pipe 10 aligns with the sample cup 15. Then, the first interactive door 101 is closed, and the high-speed pulverizer base 5 is driven by the power blade shaft 12 to rotate at high speed, pulverizing the sample for a specified time to achieve rapid sample pulverization. The detachable structure of the pulverizing dish 6 and the high-speed pulverizer base 5 facilitates the separate removal and cleaning of the pulverizing dish 6 and the cap 7 after the batch of samples has been tested.

[0022] like Figure 4 , Figure 7 As shown, specifically, a pneumatic lifting platform 35 is fixedly installed inside the sealing cover 4, and a high-speed pulverizer base 5 is fixedly installed on the top of the movable end of the pneumatic lifting platform 35. An exhaust valve 36 is fixedly installed on one side of the fixed end of the pneumatic lifting platform 35, and an exhaust pipe 37 is fixedly installed on one end of the exhaust valve 36. One end of the exhaust pipe 37 extends to the outside of the sealing cover 4 and is connected to the exhaust end of the air pump group 16. A stabilizing frame 39 is fixedly installed inside the sealing cover 4, and a stabilizing ring 40 is fixedly installed on the top of the stabilizing frame 39. The stabilizing ring 40 is sleeved on the high-speed pulverizer base 5, and multiple evenly distributed elastic pads 41 are fixedly installed on the inner wall of the stabilizing ring 40. An elastic lifting rod 38 is fixedly installed on the top of the cover 7.

[0023] In this embodiment, the elastic lifting rod 38 is fixedly connected to the cover 7 via an elastic element.

[0024] More specifically, by setting up a pneumatic lifting platform 35, during the high-speed crushing process, the vacuum pump group 16 pumps gas into the pneumatic lifting platform 35 through the exhaust pipe 37, causing the pneumatic lifting platform 35 to be compressed and extended upward, thereby driving the high-speed crusher base 5 to rise upward, so that the elastic lifting rod 38 at the top of the cover 7 contacts the top inner wall of the sealing cover 4, making the cover 7, crushing dish 6, and high-speed crusher base 5 fit more tightly, while allowing the high-speed crusher base 5 to be elastically supported in both the upper and lower directions, thereby greatly reducing the noise and transmitted vibration generated when the high-speed crusher base 5 is operating, and the stabilizing ring 40 can always restrain the lateral vibration of the high-speed crusher base 5, and reduce vibration in the horizontal direction.

[0025] like Figure 1 , Figure 8As shown, specifically, a measuring frame 14 corresponding to the bottom of the feeding tube 10 is fixedly installed on the top of the sensing end of the electronic balance 13. A sample cup 15 is placed on the measuring frame 14. A vacuum pump assembly 16 is fixedly installed on one side of the sealed cover 4. A vacuum pipe 17 is fixedly installed on the air inlet end of the vacuum pump assembly 16. A three-way valve 18 is fixedly installed on the inner wall of one side of the sealed cover 4. The air outlet end of the three-way valve 18 is connected to the vacuum pipe 17. A negative pressure pipe 19 is fixedly installed on one of the air inlets of the three-way valve 18. The negative pressure pipe 19 extends to the bottom of the sample cup 15. Figure 9 As shown, a screen plate 1501 is fixedly installed at the bottom of the sample cup 15.

[0026] More specifically, by setting up the vacuum pump group 16, after the sample is crushed, the pneumatic lifting platform 35 exhausts air through the exhaust valve 36, the high-speed crusher base 5 descends, and the bottom end of the feeding pipe 10 reconnects with the sample cup 15. Then, the vacuum pump group 16 sequentially extracts air through the vacuum pipe 17, the three-way valve 18, the negative pressure pipe 19, and the intercepting mesh plate 1501, creating a negative pressure inside the sample cup 15. This draws the sample powder from the crushing dish 6 into the sample cup 15. The powder is then sieved through the standard sieve plate 9 and gradually accumulates in the sample cup 15. The electronic balance 13 monitors the weight change of the sample cup 15 in real time. When the weight approaches the threshold, the vacuum pump group 16 stops operating, completing the automatic feeding and weighing of the sample.

[0027] The sealed housing 4 is equipped with a sample transfer mechanism for feeding the pre-fabricated sample cup 15 into the X-ray fluorescence spectrometer 2, such as... Figure 3 , Figure 10 , Figure 11As shown, specifically, the sample transfer mechanism includes a horizontal linear module 20 fixedly installed on the inner wall of the sealed housing 4. A vertical linear module 21 is fixedly installed on one side of the movable end of the horizontal linear module 20. A movable frame 22 is fixedly installed on one side of the movable end of the vertical linear module 21. A telescopic arm 23 is fixedly installed on the top of the movable frame 22. The telescopic end of the telescopic arm 23 is horizontally oriented towards the electric sliding door 3 and is fixedly installed with an assembly frame 24. Clamping arms 25 adapted to the sample cup 15 are rotatably installed on both sides of the assembly frame 24. A control motor assembly 26 is fixedly installed on one side of the assembly frame 24. The output end of the control motor assembly 26 is drivenly connected to the clamping arm 25. A gearbox 27 is fixedly installed at the bottom of the assembly frame 24, and a steering motor 28 is fixedly installed at the top of the gearbox 27. The output end of the steering motor 28 is driven and connected to the input end of the gearbox 27. An adsorption tube 29 is rotatably installed at the bottom of the assembly frame 24, and the output end of the gearbox 27 is driven and connected to the adsorption tube 29. A pressure dividing tube 30 is fixedly installed on one side of the assembly frame 24. One end of the pressure dividing tube 30 is connected to the adsorption tube 29, and the other end of the pressure dividing tube 30 is connected to the other air inlet of the three-way air valve 18. A push-pull groove 42 and a flat pressure seat 43 are fixedly installed inside the sealing cover 4. A storage cylinder 31 is slidably installed inside the push-pull groove 42. Figure 12 As shown, the inside of the storage tube 31 contains multiple round lids 32 that are compatible with the sample cup 15, and the flat pressure seat 43 is compatible with the sample cup 15.

[0028] In this embodiment, both the horizontal linear module 20 and the vertical linear module 21 can be common linear actuators in the prior art, such as linear motor modules. The electromagnetic force of the motor stator drives the moving part, which is the active end, to move linearly. Alternatively, mechanisms such as screw thread sleeves, belts and pulleys, chains and sprockets, and self-propelled carriages can be used to control the linear movement of the drive end through threaded guidance or meshing. In addition to electrical energy, components such as cylinders and hydraulic rods can also be used as power sources. The horizontal linear module 20 and the vertical linear module 21 in this embodiment can adopt technical solutions including but not limited to the above, depending on the actual situation. The control motor group 26 is a pair of servo motors with a self-locking structure, which are precisely controlled by an encoder.

[0029] More specifically, by setting up a sample transfer mechanism, the pneumatic lifting platform 35 drives the high-speed pulverizer base 5 to rise again, disengaging from the sample cup 15. A set of clamping arms 25, driven by the horizontal linear module 20 and the vertical linear module 21, moves to above the sample cup 15. Then, the control motor unit 26 drives the clamping arms 25 to rotate and descend, clamping and fixing the sample cup 15 and lifting it a short distance, causing the bottom of the sample cup 15 to detach from the metering frame 14. Then, the sample transfer mechanism places the sample cup 15 on the flat pressure seat 43, retracts the clamping arms 25, and moves them back to above the receiving cylinder 31. At this time, the assembly frame 24 descends, causing the bottom of the adsorption tube 29 to contact the round cover plate 32. The three-way air valve 18 switches the passage, and the suction pump unit 16 adsorbs the uppermost round cover plate 32 through the pressure dividing tube 30 and the adsorption tube 29. The sample transfer... The transport mechanism places the round cover plate 32 on top of the sample cup 15 to seal it. Then, the steering motor 28 drives the adsorption tube 29 through the gearbox 27 to rotate the round cover plate 32 until the top of the powder is flattened, thus compacting the powder. Finally, the electric sliding door 3 opens, and the sample transport mechanism sends the pre-made sample cup 15 into the sample chamber of the X-ray fluorescence spectrometer 2 for detection. High-energy X-rays are excited inside the sample chamber, causing the heavy metal components such as cadmium and lead in the powder in the sample cup 15 to produce characteristic X-ray fluorescence. The fluorescence intensity is strongly correlated with the content. Based on the fluorescence intensity and the weight of the powder, the content of heavy metal components is automatically calculated for qualitative determination. This completes the fully automated pretreatment and heavy metal component detection of the sample. The integration of multiple processes reduces working time, eliminates many manual operations, and avoids transport risks.

[0030] like Figure 2 , Figure 3 , Figure 12 As shown, specifically, a sliding frame 33 is fixedly installed on one side of the storage tube 31, and the sliding frame 33 is slidably installed inside the push-pull groove 42. A first interaction hole 102 and a second interaction hole 103 are opened on one side of the sealing cover 4. The electronic balance 13 is fixedly installed inside the first interaction hole 102. One end of the sliding frame 33 extends into the interior of the second interaction hole 103 and is fixedly installed with a magnetic pull plate 34. A second interaction door 104 is provided on one side of the sealing cover 4.

[0031] More specifically, by setting the second interactive hole 103, after the detection is completed, the flip cover of the X-ray fluorescence spectrometer 2 is opened, the sample cup 15 is taken out, the high-speed pulverizer base 5 is raised again, and then the second interactive door 104 is opened and a new sample cup 15 is put in for secondary detection. When the initial test, retest and blank test of all samples of the same batch in the pulverizer 6 are completed, the first interactive door 101 is opened, the pulverizer 6 and the cap 7 are taken out in sequence for cleaning, and then all samples of this round of testing are poured into the processing box, all sample cups 15 are cleaned, and then multiple cleaned parts are sent to the disinfection cabinet 1 for rapid cleaning and drying. At the same time, the magnetic pull plate 34 and the sliding frame 33 are pulled out from the second interactive hole 103 to replenish the round cover plate 32 in the storage cylinder 31 so that the detection equipment can be quickly restarted.

[0032] In summary: Sample pulverization: After powering on the X-ray fluorescence spectrometer 2, preheating and automatic calibration are initiated. By setting the pulverization mechanism, the first interactive door 101 is opened, and the pulverizing dish 6 and the cap 7 are removed. The sample cup 15 is placed on the measuring rack 14, the cap 7 is opened and placed into the pulverizing dish 6, and then the pulverizing dish 6 and the cap 7 are placed back on the high-speed pulverizer base 5, so that the bottom end of the blade holder 11 is connected to the power blade shaft 12. At this time, one end of the feed tube 10 is connected to the sample cup 15. Then the first interactive door 101 is closed, and the high-speed pulverizer base 5 drives the blade holder 11 to start rotating at high speed through the power blade shaft 12, pulverizing the sample for a specified time to achieve rapid sample pulverization. Sample weighing: After the sample is crushed, the pneumatic lifting platform 35 exhausts air through the exhaust valve 36, the high-speed crusher base 5 descends, and the bottom end of the feeding pipe 10 reconnects with the sample cup 15. Then, the vacuum pump group 16 sequentially draws air through the vacuum pipe 17, the three-way valve 18, the negative pressure pipe 19, and the intercepting screen plate 1501, creating a negative pressure inside the sample cup 15. This draws the sample powder from the crushing dish 6 into the sample cup 15. The powder is then sieved by the standard sieve plate 9 and gradually accumulates in the sample cup 15. The electronic balance 13 monitors the weight change of the sample cup 15 in real time. When the weight approaches the threshold, the vacuum pump group 16 stops operating, completing the automatic feeding and weighing of the sample. Sample sealing: The pneumatic lifting platform 35 lifts the high-speed pulverizer base 5 again, disengaging it from the sample cup 15. A set of clamping arms 25, driven by the horizontal linear module 20 and the vertical linear module 21, moves above the sample cup 15. Then, the control motor 26 drives the clamping arms 25 to rotate and descend, clamping and fixing the sample cup 15 and lifting it a short distance, causing the bottom of the sample cup 15 to detach from the metering frame 14. The sample transfer mechanism then places the sample cup 15 on the flat pressure seat 43, and the clamping arms... 25 is retracted and moved back to above the storage cylinder 31. At this time, the assembly frame 24 descends, so that the bottom end of the adsorption tube 29 contacts the round cover plate 32. The three-way air valve 18 switches the passage, and the air pump group 16 adsorbs the uppermost round cover plate 32 through the pressure dividing tube 30 and the adsorption tube 29. The sample transfer mechanism puts the round cover plate 32 into the top of the sample cup 15 for sealing. Then the steering motor 28 drives the adsorption tube 29 through the gearbox 27 to start rotating the round cover plate 32 until the top of the powder is flattened, thereby compacting the powder. During testing, the electric sliding door 3 opens, and the sample transfer mechanism delivers the pre-made sample cup 15 into the sample chamber of the X-ray fluorescence spectrometer 2 for detection. High-energy X-rays are excited inside the sample chamber, causing heavy metal components such as cadmium and lead in the powder in the sample cup 15 to produce characteristic X-ray fluorescence. The fluorescence intensity is strongly correlated with the content. Based on the fluorescence intensity and the weight of the powder, the content of heavy metal components is automatically calculated for qualitative determination. After testing: Open the flip cover of the X-ray fluorescence spectrometer 2, take out the sample cup 15, raise the high-speed pulverizer base 5 again, then open the second interactive door 104 and put in a new sample cup 15 for secondary testing. After the initial test, retest and blank test of all samples of the same batch in the pulverizer 6 are completed, open the first interactive door 101, take out the pulverizer 6 and the cap 7 in sequence for cleaning, pour all the samples tested in this round into the processing box, clean all the sample cups 15, and then send the multiple cleaned parts into the disinfection cabinet 1 for rapid cleaning and drying. At the same time, pull out the magnetic pull plate 34 and the sliding frame 33 from the second interactive hole 103 to replenish the round cover plate 32 in the storage cylinder 31 so that the testing equipment can be quickly restarted.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A food heavy metal component detection device, characterized in that, The system includes a disinfection cabinet (1), on which an X-ray fluorescence spectrometer (2), an electric sliding door (3), and a sealed cover (4) are fixedly installed. The electric sliding door (3) is located between the X-ray fluorescence spectrometer (2) and the sealed cover (4). The two ends of the electric sliding door (3) are respectively connected to the interior of the X-ray fluorescence spectrometer (2) and the sealed cover (4). The interior of the sealed cover (4) is provided with a crushing mechanism for rapidly crushing samples and an electronic balance (13) for weighing samples. A feeding pipe (10) is provided on one side of the crushing mechanism. A measuring frame (14) corresponding to the bottom end of the feeding pipe (10) is fixedly installed on the top of the sensing end of the electronic balance (13). The measuring frame (14) is used to place... A sample cup (15) is provided. A vacuum pump assembly (16) is fixedly installed on one side of the sealing cover (4). A vacuum pipe (17) is fixedly installed at the air inlet end of the vacuum pump assembly (16). A three-way valve (18) is fixedly installed on the inner wall of one side of the sealing cover (4). The air outlet end of the three-way valve (18) is connected to the vacuum pipe (17). A negative pressure pipe (19) is fixedly installed at one of the air inlets of the three-way valve (18). The negative pressure pipe (19) extends to the bottom of the sample cup (15). An intercepting mesh plate (1501) is fixedly installed at the bottom of the sample cup (15). A sample transfer mechanism for sending the pre-made sample cup (15) into the X-ray fluorescence spectrometer (2) is provided inside the sealing cover (4).

2. The food heavy metal component detection device according to claim 1, characterized in that, The pulverizing mechanism includes a high-speed pulverizer base (5) disposed inside the sealed cover (4). A first interactive door (101) adapted to the high-speed pulverizer base (5) is slidably installed on one side of the sealed cover (4). A pulverizing dish (6) is placed on the top of the high-speed pulverizer base (5). A cover (7) is placed on the top of the pulverizing dish (6). A sieve plate seat (8) is fixedly installed on one side of the pulverizing dish (6). A clearance groove (5) is opened on one side of the top of the high-speed pulverizer base (5). 01), the sieve plate seat (8) is located inside the relief groove (501), a standard sieve plate (9) is slidably installed inside the sieve plate seat (8), the feed pipe (10) is fixedly installed at one end of the sieve plate seat (8), a knife holder (11) is rotatably installed inside the pulverizing dish (6), the bottom end of the knife holder (11) extends to the bottom of the pulverizing dish (6), and a power cutter shaft (12) adapted to the knife holder (11) is driven and installed on the top of the high-speed pulverizer seat (5).

3. The food heavy metal component detection device according to claim 2, characterized in that, A pneumatic lifting platform (35) is fixedly installed inside the sealed cover (4). The high-speed crusher base (5) is fixedly installed on the top of the movable end of the pneumatic lifting platform (35). An exhaust valve (36) is fixedly installed on one side of the fixed end of the pneumatic lifting platform (35). An exhaust pipe (37) is fixedly installed on one end of the exhaust valve (36). One end of the exhaust pipe (37) extends to the outside of the sealed cover (4) and is connected to the air outlet of the air pump group (16).

4. The food heavy metal component detection device according to claim 2, characterized in that, A stabilizing frame (39) is fixedly installed inside the sealing cover (4). A stabilizing ring (40) is fixedly installed at the top of the stabilizing frame (39). The stabilizing ring (40) is sleeved on the high-speed crusher base (5). Multiple evenly distributed elastic pads (41) are fixedly installed on the inner wall of the stabilizing ring (40).

5. The food heavy metal component detection device according to claim 2, characterized in that, An elastic lifting rod (38) is fixedly installed on the top of the cover (7).

6. The food heavy metal component detection device according to claim 1, characterized in that, The sample transfer mechanism includes a horizontal linear module (20) fixedly installed on the inner wall of the sealed cover (4). A vertical linear module (21) is fixedly installed on one side of the movable end of the horizontal linear module (20). A movable frame (22) is fixedly installed on one side of the movable end of the vertical linear module (21). A telescopic arm (23) is fixedly installed on the top of the movable frame (22). The telescopic end of the telescopic arm (23) is horizontally facing the electric sliding door (3) and is fixedly installed with an assembly frame (24). Clamping arms (25) adapted to the sample cup (15) are rotatably installed on both sides of the assembly frame (24). A control motor group (26) is fixedly installed on one side of the assembly frame (24). The output end of the control motor group (26) is drivenly connected to the clamping arm (25).

7. The food heavy metal component detection device according to claim 6, characterized in that, A gearbox (27) is fixedly installed at the bottom of the assembly frame (24), and a steering motor (28) is fixedly installed at the top of the gearbox (27). The output end of the steering motor (28) is drivenly connected to the input end of the gearbox (27). An adsorption tube (29) is rotatably installed at the bottom of the assembly frame (24), and the output end of the gearbox (27) is drivenly connected to the adsorption tube (29). A pressure dividing tube (30) is fixedly installed on one side of the assembly frame (24). One end of the tube is connected to the adsorption tube (29), and the other end of the pressure dividing tube (30) is connected to the other air inlet of the three-way valve (18). The sealing cover (4) is fixedly installed with a push-pull groove (42) and a flat pressure seat (43). The push-pull groove (42) is slidably installed with a storage tube (31). The storage tube (31) has multiple round cover pieces (32) that are compatible with the sample cup (15) stacked inside. The flat pressure seat (43) is compatible with the sample cup (15).

8. The food heavy metal component detection device according to claim 7, characterized in that, A sliding frame (33) is fixedly installed on one side of the storage tube (31). The sliding frame (33) is slidably installed inside the push-pull groove (42). A first interactive hole (102) and a second interactive hole (103) are opened on one side of the sealing cover (4). The electronic balance (13) is fixedly installed inside the first interactive hole (102). One end of the sliding frame (33) extends into the interior of the second interactive hole (103) and is fixedly installed with a magnetic pull plate (34). A second interactive door (104) is provided on one side of the sealing cover (4).

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