A food contact material residue detection pretreatment method and device

Abstract

The invention relates to a method and device for detecting and treating residues of food contact materials, and belongs to the technical field of residue detection. The method and device for detecting and treating residues of food contact materials include a crushing box, a cover plate is arranged on the top of the crushing box, an equal amount feed box is arranged on the bottom of the crushing box, a plurality of extraction cylinders are arranged below the equal amount feed box, a plurality of second feed holes are opened at the bottom of the crushing box, a plurality of first feed holes are opened at the bottom of the equal amount feed box, which are respectively located directly above the extraction cylinders, a central rotating shaft is arranged for rotation at the center of the crushing box, and a driving mechanism for driving the central rotating shaft to rotate is arranged on the upper side of the cover plate. In the invention, when the central crushing blade rotates, the planetary crushing blade can also rotate while revolving around the central crushing blade, so that the central crushing blade and the planetary crushing blade can crush the food contact material, improve the ink extraction effect on the surface of the food contact material, and make the detection result more accurate.

Description

Technical Field

[0001] The invention belongs to the technical field of residue detection, and in particular relates to a food contact material residue detection pretreatment method and device. Background Art

[0002] As products that come into direct contact with food, the sanitation and safety of food contact materials are closely related to people's health. Novelty, aesthetics and branding are the new features of food contact materials, which make printing inks more and more widely used on them. However, the organic substances that may be contained in printing inks are divided into: benzene, alcohols, esters, aldehydes, ketones, etc. After these organic substances enter the human body, mild poisoning can cause dizziness, headache, nausea, vomiting, staggering gait, mild consciousness disorder and eye and upper respiratory tract irritation symptoms. In severe cases, coma, convulsions, decreased blood pressure and respiratory and circulatory failure may occur. Therefore, residual detection of food contact materials is very important.

[0003] For example, in a Chinese invention patent with announcement number CN108663445B and titled "An analytical method for determining the residues of multiple pollutants in an acidic simulated immersion solution of food contact materials", microwave-assisted dispersed liquid-liquid microextraction is used to pre-treat the acidic simulated immersion solution of food contact material products, 44 standard solutions of phthalate esters, disperse dyes and fluorescent whitening agents are prepared to draw a standard curve, and ultra-high performance liquid chromatography-high resolution mass spectrometry is used for analysis to perform high-throughput determination of phthalates, fluorescent whitening agents and disperse dyes in food contact material products. Although the above scheme can extract the ink in the food contact material products, the extraction effect is not good, making the residue detection inaccurate. In order to improve the extraction effect, a pretreatment method and device for detecting residues in food contact materials are now needed. Summary of the invention

[0004] The purpose of the present invention is to provide a method and device for detecting and treating food contact material residues with a simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A food contact material residue detection pretreatment device comprises a crushing box, a cover plate is provided on the top of the crushing box, feeding cylinders are provided on both sides of the crushing box, an equal amount discharge box is provided at the bottom of the crushing box, a plurality of extraction cylinders are provided below the equal amount discharge box, a plurality of second discharge holes connected with the equal amount discharge box are provided at the bottom of the crushing box, a plurality of first discharge holes respectively located directly above the extraction cylinders are provided at the bottom of the equal amount discharge box, a central rotating shaft is provided for rotation inside the crushing box, a driving mechanism for driving the central rotating shaft to rotate is provided on the upper side of the cover plate, a central crushing assembly is provided on the central rotating shaft, a plurality of planetary crushing assemblies are provided on the circumference of the central rotating shaft, a transmission rod is movably sleeved at the lower end of the central rotating shaft which penetrates the crushing box and the equal amount discharge box and extends to below the equal amount discharge box, and a stirring mechanism for stirring the inner sides of the plurality of extraction cylinders is provided on the transmission rod.

[0007] As a further optimization scheme of the present invention, the driving mechanism includes a servo motor fixedly arranged on the upper side of the cover plate, a driving gear fixedly arranged on the output end of the servo motor, and a driven gear fixedly sleeved on the upper end of the central rotating shaft is meshed on one side of the driving gear.

[0008] As a further optimization scheme of the present invention, the central crushing assembly includes a central ring fixed on the central rotating shaft by screws, a plurality of central crushing blades are equidistantly arranged on the outer circumference of the central ring, an arc sweeping rod sliding with the bottom of the crushing box is equidistantly arranged on the lower end circumference of the central rotating shaft, and an observation window is arranged on the front side of the crushing box.

[0009] As a further optimization scheme of the present invention, the planetary crushing assembly includes an upper fixing ring fixedly sleeved on the upper end of the central rotating shaft by screws, a plurality of upper fixing rods are equidistantly arranged on the outer circumference of the upper fixing ring, a lower fixing ring is fixedly sleeved on the lower end of the central rotating shaft by screws, a plurality of lower fixing rods are equidistantly arranged on the outer circumference of the lower fixing ring, a rotating rod is rotatably sleeved between the upper fixing rod and the lower fixing rod located on the same vertical line, a plurality of planetary rings are fixedly arranged on the rotating rod by screws, a plurality of planetary crushing blades are equidistantly arranged on the circumference of the plurality of planetary rings, planetary gears are fixedly arranged on the upper ends of the plurality of rotating rods, and a gear ring meshing with a plurality of planetary gears at the same time is fixedly arranged on the lower surface of the cover plate.

[0010] As a further optimization scheme of the present invention, the central rotating shaft adopts a hollow rod, and the outer side of the central rotating shaft is provided with a mounting ring located inside the crushing box by means of screws, and the outer side of the mounting ring is provided with a plurality of nozzles connected with the interior of the central rotating shaft, and the upper end of the central rotating shaft is rotatably provided with an adapter fixedly connected to the upper side of the cover plate, and the upper side of the adapter is provided with a water inlet pipe connected with the interior of the central rotating shaft.

[0011] As a further optimization scheme of the present invention, a card slot located inside the central rotating shaft is formed at the upper end of the transmission rod, and an annular groove located below the card slot is formed at the upper end of the transmission rod, and a card connection component intermittently matched with the card slot and the annular groove is provided on the outer side of the central rotating shaft, and an equal amount of material discharge block is rotatably provided on the inner side of the equal amount of material discharge box, and a plurality of material discharge grooves respectively matched with the first material discharge hole and the second material discharge hole are vertically penetrated through the circumference of the equal amount of material discharge block, and a transmission component matched with the transmission rod is provided on the inner side of the equal amount of material discharge block, and a plurality of material discharge barrels respectively matched with the first material discharge hole are provided on the lower side of the equal amount of material discharge box.

[0012] As a further optimization scheme of the present invention, the clamping assembly includes a fixed cylinder fixedly arranged on the outside of the central rotating shaft, a clamping spring is arranged on the inner side of the fixed cylinder, and a clamping rod is fixedly arranged at one end of the clamping spring, which slides through the fixed cylinder and the central rotating shaft and extends to the inside of the central rotating shaft.

[0013] As a further optimization scheme of the present invention, the transmission assembly includes a flat key fixedly arranged on the outside of a transmission rod, a transmission block is fixedly arranged on the inner side of the equal-amount material discharge block, one end of the transmission block is provided with a transmission groove cooperating with the flat key, a plurality of support rods are fixedly arranged on the outside of the crushing box, and a base is commonly provided at the bottom of the plurality of support rods, the lower end of the transmission rod passes through the center of the base, an electric telescopic rod is provided on the lower side of the base, and a connecting plate rotatably connected to the lower end of the transmission rod is provided on the output end of the electric telescopic rod, a plurality of lower liquid cylinders are provided on the lower side of the base, a bottom plate is provided on the upper side of the base, a plurality of positioning grooves cooperating with the extraction cylinder are provided on the upper side of the bottom plate, and lower liquid holes respectively connected with the lower liquid cylinders are provided at the bottoms of the plurality of positioning grooves, and the plurality of extraction cylinders include an outer cylinder and an inner cylinder arranged inside and outside, the inner cylinder is provided with a plurality of water leakage holes, and the bottom of the outer cylinder is provided with a liquid outlet hole cooperating with the lower liquid hole.

[0014] As a further optimization scheme of the present invention, the stirring mechanism includes a locating bearing sleeved on a transmission rod, a plurality of locating rods are equidistantly arranged on the outer circumference of the locating bearing, a stirring shaft is rotatably arranged at one end of the plurality of locating rods, a plurality of stirring rods are arranged at the lower end of the stirring shaft, a transmission gear is fixedly sleeved on the upper end of the plurality of stirring shafts, a convex rod is fixedly arranged on the outer side of the transmission rod, a central gear is vertically slidably arranged on the transmission rod, which is slidably connected to the convex rod and meshes with the plurality of transmission gears at the same time, an adjusting cylinder is fixedly arranged on the upper side of the locating bearing, and an adjusting knob cooperating with the transmission rod is arranged on the adjusting cylinder.

[0015] A food contact material residue detection pretreatment method comprises the following steps:

[0016] S1: First, pour the food contact material into the crushing box through the feed barrel, and drive the central shaft to rotate through the driving mechanism. When the central shaft rotates, the upper fixed ring, the lower fixed ring, the upper fixed rod and the lower fixed rod are driven to rotate, so that the rotating rod revolves around the central shaft, and the planetary gear on the upper end of the rotating rod is meshed with the gear ring on the lower surface of the cover plate, so that the rotating rod can rotate while revolving, and the multiple planetary crushing blades on the rotating rod can also rotate while revolving, so that the multiple planetary crushing blades and the central crushing blade rotate in opposite directions, so that the food contact material is crushed into food contact material particles;

[0017] S2: After the crushing is completed, the electric telescopic rod drives the connecting plate to rise and fall, so that the transmission rod can be lowered, so that the slot at the upper end of the transmission rod slides into the clamping rod on the central shaft, so that one end of the clamping rod is inserted into the slot, and when the central shaft rotates, the transmission rod can be driven to rotate. When the transmission rod rotates, the transmission block and the equal amount of feeding block are driven to rotate through the flat key. When the feeding trough on the equal amount of feeding block is connected with the second feeding hole, the food contact material particles inside the crushing box fall into the inside of the feeding trough. When the feeding trough is filled with food contact material particles, the equal amount of feeding block continues to rotate. When the feeding trough is connected with the first feeding hole, the food contact material particles in the feeding trough can be discharged through the feeding barrel, and then the equal amount of food contact material particles fall into the inside of the extraction barrel;

[0018] S3: When an equal amount of food contact material particles falls into the inner cylinder, an ink extractant is injected into the inner cylinder through a syringe, and then the adjusting knob is turned to cancel the positioning of the positioning bearing from the transmission rod, so that the positioning bearing and the central gear are lowered together, so that a plurality of stirring shafts and stirring rods outside the positioning bearing can fall into the inside of the extraction cylinder, and then the transmission rod is driven to rotate by the central shaft, the transmission rod drives the central gear to rotate, and the central gear drives the multiple transmission gears outside to rotate, so that the multiple stirring shafts and stirring rods can be driven to stir in different extraction cylinders respectively;

[0019] S4: Finally, the valve on the lower liquid cylinder is opened, so that the extract inside the inner cylinder can be discharged through the water leakage hole, the liquid outlet hole and the lower liquid hole, and then the extract is discharged through the lower liquid cylinder, and the ink residue is detected by pouring the extract into the high performance liquid chromatograph.

[0020] The beneficial effects of the present invention are:

[0021] 1. In the present invention, through the central crushing blade and the planetary crushing blade, when the central crushing blade rotates, the planetary crushing blade can also rotate while revolving around the central crushing blade, so that the central crushing blade and the planetary crushing blade can crush the food contact material, improve the ink extraction effect on the surface of the food contact material, and make the detection result more accurate. In addition, the central crushing blade and the planetary crushing blade rotate in opposite directions, which can further improve the crushing effect of the food contact material, make the ink extraction on the surface of the food contact material more thorough, and improve the detection accuracy.

[0022] 2. In the present invention, the transmission rod is driven to descend by the electric telescopic rod, so that the annular groove and the clamping groove at the upper end of the transmission rod can slide down, so that the clamping rod on the inner side of the annular groove is clamped into the inner side of the clamping groove. Since the clamping groove fixes the clamping rod on one side of the transmission rod, the transmission rod and the central rotating shaft can be connected together. When the central rotating shaft rotates, the transmission rod can be driven to rotate, and the transmission block can be driven to rotate through the flat key on the outer side of the transmission rod, so that the equal-amount discharge block can rotate on the inner side of the equal-amount discharge box. When the discharge trough on the equal-amount discharge block is connected and matched with the second discharge hole, the material particles at the bottom of the crushing box can be poured into the inside of the discharge trough, so that the material particles fill each discharge trough at the same time, and then the transmission rod is driven to rotate by the central rotating shaft, so that the equal-amount discharge block and the discharge trough can rotate on the inner side of the equal-amount discharge box. When the material trough is rotated to be connected with the first discharge hole, the discharge trough and the second discharge hole are staggered and closed, so that equal amounts of material particles inside the multiple discharge troughs can fall from the first discharge hole at the same time, so that equal amounts of material particles fall into the interior of the extraction cylinder through the discharge cylinder, so that equal amounts of material particles are mixed with the extracting liquid inside the extraction cylinder, and at the same time, by turning the adjusting knob to rotate the multiple positioning rods, the stirring shafts and stirring rods at one end of the multiple positioning rods are lowered and slide into the interior of the extraction cylinder. When the transmission rod rotates, it can drive the central gear to rotate, and then drive the transmission gears at one end of the multiple positioning rods to rotate, so that the stirring shafts and stirring rods are stirred inside the extraction cylinder, so that the material particles and the extracting liquid are mixed more evenly, the ink extraction efficiency on the surface of the material particles is improved, the extraction is more sufficient, and the accuracy of the detection is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 is a schematic diagram of a first internal overall structure of the present invention;

[0025] Figure 3 is a second internal overall structure schematic diagram of the present invention;

[0026] Figure 4 is a third internal overall structure schematic diagram of the present invention;

[0027] Figure 5 is a fourth internal overall structure schematic diagram of the present invention;

[0028] Figure 6 is a fifth internal overall structure schematic diagram of the present invention;

[0029] Figure 7 The present invention Figure 2 Enlarged view of point A in the middle;

[0030] Figure 8 The present invention Figure 2 Enlarged view of point B in the middle;

[0031] Fig. 9 The present invention Figure 3 Enlarged view of point C in the middle;

[0032] Fig.10 The present invention Figure 3 Enlarged view of point D in the middle;

[0033] Fig.11 The present invention Figure 4 Enlarged view of point E in the middle;

[0034] Fig.12 The present invention Figure 5 Enlarged view of point F in the middle;

[0035] Fig.13 The present invention Figure 5 Enlarged view of the M in the middle;

[0036] Fig.14 The present invention Figure 5 Enlarged view of point N in the middle;

[0037] Fig.15 The present invention Figure 6 Enlarged view of S in the middle;

[0038] Fig.16 It is a schematic diagram of the overall structure of the transmission rod of the present invention;

[0039] Fig.17 It is a schematic diagram of the overall structure of the equal amount of material blocks of the present invention.

[0040] In the figure: 1. crushing box; 2. cover plate; 3. driving mechanism; 301. servo motor; 302. driving gear; 303. driven gear; 4. equal amount feeding box; 5. stirring mechanism; 501. positioning bearing; 502. positioning rod; 503. transmission gear; 504. stirring shaft; 505. stirring rod; 506. central gear; 507. adjusting cylinder; 508. adjusting knob; 6. transmission rod; 601. convex rod; 7. base; 8. bottom plate; 9. positioning groove; 10. extraction cylinder; 1001. outer cylinder; 1002. inner cylinder; 1003. water leakage hole; 1004. liquid outlet hole; 11. feeding cylinder; 12. support rod; 13. feeding cylinder; 14. water inlet pipe; 15. adapter; 16. observation window; 17. equal amount feeding block; 1701. transmission block; 170 2. Transmission slot; 18. Feeding slot; 19. First feeding hole; 20. Center crushing assembly; 2001. Center ring; 2002. Center crushing blade; 21. Planetary crushing assembly; 2101. Rotating rod; 2102. Planetary ring; 2103. Planetary crushing blade; 2104. Planetary gear; 2105. Gear ring; 22. Second feeding hole; 23. Center rotating shaft; 24. Lower liquid hole; 25. Lower liquid cylinder; 26. Electric telescopic rod; 27. Connecting plate; 28. Flat key; 29. ​​Annular groove; 30. Snap-on assembly; 3001. Fixed cylinder; 3002. Snap-on spring; 3003. Snap-on rod; 31. Snap-on slot; 32. Upper fixed ring; 33. Upper fixed rod; 34. Mounting ring; 35. Spray nozzle; 36. Lower fixed ring; 37. Lower fixed rod; 38. Arc sweeping rod. DETAILED DESCRIPTION

[0041] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0042] Example 1: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8As shown, a food contact material residue detection pretreatment device comprises a crushing box 1, a front side of the crushing box 1 is provided with an observation window 16, a top of the crushing box 1 is provided with a cover plate 2, the cover plate 2 and the top of the crushing box 1 are connected by a plurality of bolts, feeding cylinders 13 are provided on both sides of the crushing box 1, the feeding cylinders 13 are arranged obliquely, so as to facilitate sliding the food contact material products into the crushing box 1, a plurality of extraction cylinders 10 are provided below the crushing box 1, ink extractants such as toluene, xylene, acetone, butanol or ethyl acetate are injected into the extraction cylinders 10 by syringes, a plurality of second discharge holes 22 are provided at the bottom of the crushing box 1, an equal amount discharge box 4 is provided at the bottom of the crushing box 1, the upper side of the equal amount discharge box 4 is connected with the crushing box 1 through the second discharge hole 22, and the equal amount discharge box 4 can collect crushed material particles, a central rotating shaft 23 is provided at the center of the crushing box 1, and arc sweeping rods sliding with the bottom of the crushing box 1 are equidistantly provided on the circumference of the lower end of the central rotating shaft 23 38. The center of the arc sweeping rod 38 is set as an arc structure. The arc structure facilitates pushing the food contact material particles at the bottom of the crushing box 1 to the inside of the second discharge hole 22 to avoid residual food contact material particles at the bottom of the crushing box 1. The upper side of the cover plate 2 is provided with a driving mechanism 3 for driving the central rotating shaft 23 to rotate. The driving mechanism 3 includes a servo motor 301 fixedly arranged on the upper side of the cover plate 2. The output end of the servo motor 301 is fixedly provided with a driving gear 302. One side of the driving gear 302 is meshed with a driven gear 303 fixedly sleeved on the upper end of the central rotating shaft 23. When in use, the servo motor 301 drives the driving gear 302 to rotate, so that the driven gear 303 can be rotated, and then the central rotating shaft 23 is driven to rotate, so that the central rotating shaft 23 drives the arc sweeping rod 38 at its bottom to rotate, so that the material particles at the bottom of the inner side of the crushing box 1 are pushed to the inside of the second discharge hole 22, and finally the crushed food contact material is discharged through the second discharge hole 22, thereby improving the discharge efficiency.

[0043] like Figure 5 , Fig.12 As shown, a central crushing assembly 20 is arranged on the central rotating shaft 23, and the central crushing assembly 20 includes a central ring 2001 fixedly mounted on the central rotating shaft 23 by screws, and a plurality of central crushing blades 2002 are equidistantly arranged on the outer circumference of the central ring 2001. When in use, when the central rotating shaft 23 rotates, the plurality of central crushing blades 2002 are driven to rotate, so that the food contact materials inside the crushing box 1 are crushed, thereby improving the crushing effect of the food contact materials, and facilitating the subsequent extraction of the ink.

[0044] like Figure 2 , Figure 5 , Figure 8 , Fig.12As shown, a plurality of planetary crushing assemblies 21 are arranged on the circumference of the central rotating shaft 23, and the planetary crushing assemblies 21 include an upper fixing ring 32 fixedly sleeved on the upper end of the central rotating shaft 23 by screws, and a plurality of upper fixing rods 33 are equidistantly arranged on the outer circumference of the upper fixing ring 32, and a lower fixing ring 36 is fixedly sleeved on the lower end of the central rotating shaft 23 by screws, and a plurality of lower fixing rods 37 are equidistantly arranged on the outer circumference of the lower fixing ring 36, and a rotating rod 2101 is rotatably sleeved between the upper fixing rod 33 and the lower fixing rod 37 on the same vertical line, and a plurality of planetary rings 2102 are fixedly arranged on the rotating rod 2101 by screws, and a plurality of planetary crushing blades 2103 are equidistantly arranged on the circumference of the plurality of planetary rings 2102, and a plurality of planetary gears 2104 are fixedly arranged on the upper ends of the plurality of rotating rods 2101, and a plurality of planetary gears 2104 are fixedly arranged on the lower surface of the cover plate 2 When the meshing gear ring 2105 is in use, when the central rotating shaft 23 rotates, the upper fixed ring 32 and the lower fixed ring 36 are driven to rotate, so that the upper fixed rod 33 and the lower fixed rod 37 are rotated, and the rotating rod 2101 between the upper fixed rod 33 and the lower fixed rod 37 is driven to rotate, so that the rotating rod 2101 revolves around the central rotating shaft 23. When revolving, since the planetary gear 2104 at the upper end of the rotating rod 2101 is meshed with the gear ring 2105 on the lower surface of the cover plate 2, the rotating rod 2101 can rotate while revolving, so that the multiple planetary crushing blades 2103 on the rotating rod 2101 can rotate while revolving, so that the multiple planetary crushing blades 2103 and the central crushing blade 2002 rotate in opposite directions, so that the food contact material can be crushed more thoroughly, the subsequent extraction can be more sufficient, and the accuracy of the detection is improved.

[0045] like Figure 2 , Figure 5 , Figure 8 , Fig.12As shown, the central rotating shaft 23 adopts a hollow rod, and a mounting ring 34 located inside the crushing box 1 is arranged on the outer side of the central rotating shaft 23 through screws, and a plurality of nozzles 35 connected with the inner part of the central rotating shaft 23 are arranged on the outer side of the mounting ring 34. The upper end of the central rotating shaft 23 is rotatably provided with an adapter 15 fixedly connected to the upper side of the cover plate 2, and the upper side of the adapter 15 is provided with a water inlet pipe 14 connected with the inner part of the central rotating shaft 23. One end of the water inlet pipe 14 is connected with a water pump (not shown in the figure). After the food contact material product is crushed and discharged, it is discharged through the water pump. Clean water is pumped into the interior of the water inlet pipe 14, and then the clean water can be pumped into the interior of the central shaft 23 through the water inlet pipe 14, and finally sprayed out through the multiple nozzles 35 on the side wall of the central shaft 23, so that the interior of the crushing box 1 is cleaned. In the cleaning process, the central shaft 23 is driven to rotate by the servo motor 301, so that the multiple nozzles 35 on the outer side of the central shaft 23 can be rotated to spray water for cleaning, thereby improving the cleaning effect and efficiency, shortening the cleaning time, facilitating the next inspection of other food contact material products, and improving the practicality of the device.

[0046] Embodiment 2: Based on embodiment 1, further improvement is made in that Figure 3 , Figure 4 , Figure 5 , Fig. 9 , Fig.13 , Fig.14 , Fig.16 , Fig.17As shown, a plurality of first discharge holes 19 are provided at the bottom of the equal discharge box 4, and the plurality of first discharge holes 19 and the plurality of second discharge holes 22 are staggered. The plurality of first discharge holes 19 are respectively located directly above the extraction cylinder 10, so as to collect the materials falling from the equal discharge box 4. A transmission rod 6 is movably sleeved on the lower end of the central rotating shaft 23, and the transmission rod 6 passes through the crushing box 1 and the equal discharge box 4 and extends to the bottom of the equal discharge box 4. A clamping groove 31 located inside the central rotating shaft 23 is provided on the upper end of the transmission rod 6, and the clamping groove 31 is provided on one side of the transmission rod 6. An annular groove 29 located below the clamping groove 31 is provided on the upper end of the transmission rod 6, and the annular groove 29 is provided on the circumference of the outer wall of the transmission rod 6. A clamping assembly 30 intermittently matched with the clamping groove 31 and the annular groove 29 is provided on the outer side of the central rotating shaft 23. The clamping assembly 30 includes a fixed cylinder 3001 fixedly arranged on the outer side of the central rotating shaft 23, and a The clamping spring 3002 has a clamping rod 3003 fixedly disposed at one end thereof, which slides through the fixing cylinder 3001 and the central shaft 23 and extends to the inner side of the central shaft 23. The upper and lower sides of one end of the clamping rod 3003 are inclined. When in use, when the central shaft 23 rotates, since one end of the clamping rod 3003 is disposed at the inner side of the annular groove 29 and the annular groove 29 is circularly disposed around the transmission rod 6, when the central shaft 23 rotates, When the central shaft 23 rotates, the transmission rod 6 will not be driven to rotate by the clamping rod 3003. When the transmission rod 6 is pulled down, the clamping slot 31 at the upper end of the transmission rod 6 will slide down, so that the clamping rod 3003 on one side of the central shaft 23 slides into the clamping slot 31 at the upper end of the transmission rod 6. Since the clamping slot 31 is provided on one side of the transmission rod 6, when the central shaft 23 rotates, the clamping rod 3003 and the clamping slot 31 are engaged, so that the transmission rod 6 is driven to rotate together with the central shaft 23.

[0047] like Figure 3 , Figure 4 , Figure 5 , Fig. 9 , Fig.11 , Fig.14 , Fig.16 , Fig.17As shown, an equal amount of material discharge block 17 is rotatably arranged on the inner side of the equal amount material discharge box 4, and a plurality of material discharge grooves 18 respectively matched with the first material discharge hole 19 and the second material discharge hole 22 are vertically penetrated in the circumference of the equal amount material discharge block 17, and a transmission assembly matched with the transmission rod 6 is arranged on the inner side of the equal amount material discharge block 17, and the transmission assembly includes a flat key 28 fixedly arranged on the outer side of the transmission rod 6, and a transmission block 1701 is fixedly arranged on the inner side of the equal amount material discharge block 17, and a transmission groove 1702 matched with the flat key 28 is opened at one end of the transmission block 1701, and the transmission groove 1702 vertically penetrates one side of the transmission block 1701, and a plurality of support rods 12 are fixedly arranged on the outer side of the crushing box 1, and a base 7 is commonly arranged at the bottom of the plurality of support rods 12, and the lower end of the transmission rod 6 penetrates the bottom In the center of the seat 7, a handle (not shown in the figure) is provided at the lower end of the transmission rod 6 to facilitate pulling and lifting the transmission rod 6. An electric telescopic rod 26 is provided on the lower side of the base 7. The output end of the electric telescopic rod 26 is provided with a connecting plate 27 rotatably connected to the lower end of the transmission rod 6. The connecting plate 27 is connected to the lower end of the transmission rod 6 through a bearing. When it is necessary to connect the transmission rod 6 to the central rotating shaft 23, it is only necessary to drive the connecting plate 27 to descend through the electric telescopic rod 26 to make the transmission rod 6 descend, so that the slot 31 at the upper end of the transmission rod 6 slides into the clamping rod 3003 on the central rotating shaft 23, so that one end of the clamping rod 3003 is inserted into the slot 31. When the central rotating shaft 23 rotates, the transmission rod 6 can be driven to rotate.

[0048] like Figure 3 , Figure 5 , Figure 6 , Fig.14 , Fig.15As shown, a plurality of lower liquid cylinders 25 are arranged on the lower side of the base 7, and valves (not shown in the figure) are arranged on the plurality of lower liquid cylinders 25. A bottom plate 8 is arranged on the upper side of the base 7, and a plurality of positioning grooves 9 cooperating with the extraction cylinder 10 are provided on the upper side of the bottom plate 8. The extraction cylinder 10 can be positioned through the positioning grooves 9 to prevent the extraction cylinder 10 from shaking and avoid affecting the stability of the extraction. The bottoms of the plurality of positioning grooves 9 are provided with lower liquid holes 24 respectively connected with the lower liquid cylinder 25. The plurality of extraction cylinders 10 include an outer cylinder 1001 and an inner cylinder 1002 arranged inside and outside, a cavity is arranged between the outer cylinder 1001 and the inner cylinder 1002, a plurality of water leakage holes 1003 are provided on the inner cylinder 1002, and a liquid outlet hole 1004 cooperating with the lower liquid hole 24 is provided at the bottom of the outer cylinder 1001. When in use, the outer cylinder 1001 and the inner cylinder are connected to each other through the outer cylinder 1001. 1002 can make the extraction and separation be carried out separately. When the extraction is completed, the extraction liquid is discharged from the liquid outlet 1004 at the bottom of the outer cylinder 1001 through the several leakage holes 1003 on the inner cylinder 1002. The solid and the liquid can be separated without taking out the extraction cylinder 10, and the extracted material particles and the liquid can be taken out separately to prevent affecting the detection accuracy. A plurality of discharge cylinders 11 are arranged on the lower side of the equal discharge box 4. The plurality of discharge cylinders 11 are respectively matched with the first discharge holes 19. The plurality of discharge cylinders 11 are respectively located directly above the plurality of extraction cylinders 10. After the extraction is completed, the valve on the lower liquid cylinder 25 is opened, so that the extraction liquid on the inner side of the inner cylinder 1002 can be discharged through the leakage holes 1003, the liquid outlet holes 1004 and the lower liquid holes 24, and then the extraction liquid is discharged through the lower liquid cylinder 25.

[0049] like Figure 2 , Figure 3 , Fig.10 , Fig.16As shown, a stirring mechanism 5 for stirring the inner sides of a plurality of extraction tubes 10 is arranged on the transmission rod 6, and the stirring mechanism 5 comprises a positioning bearing 501 sleeved on the transmission rod 6, and the positioning bearing 501 is vertically slidably arranged on the transmission rod 6, and a plurality of positioning rods 502 are equidistantly arranged on the outer circumference of the positioning bearing 501, and a stirring shaft 504 is rotatably arranged at one end of each of the plurality of positioning rods 502, and a plurality of stirring rods 505 are arranged at the lower end of the stirring shaft 504, and a transmission gear 503 is fixedly sleeved on the upper end of the plurality of stirring shafts 504, and a convex rod 601 is vertically arranged on the transmission rod 6, and a central gear 506 which is simultaneously meshed with the plurality of transmission gears 503 is slidably arranged on the convex rod 601, and the upper side of the central gear 506 is fixed to the inner ring of the positioning bearing 501, and the central gear 506 is fixed to the inner ring of the positioning bearing 501 through the central gear 506. The heart gear 506 slides vertically on the convex rod 601 without affecting the circular rotation of the center gear 506. The rotation of the transmission rod 6 can also drive the center gear 506 to rotate. An adjusting cylinder 507 is fixedly provided on the upper side of the outer ring of the positioning bearing 501. The adjusting cylinder 507 is provided with an adjusting knob 508 that cooperates with the transmission rod 6. When the transmission rod 6 drives an equal amount of discharge blocks 17 to rotate, that is, when the food contact material particles inside the crushing box 1 need to be discharged, the plurality of positioning rods 502 are rotated first. When the stirring shaft 504 at one end of the plurality of positioning rods 502 is away from the discharge barrel 11, the positioning bearing 501 is fixed on the transmission rod 6 by rotating the adjusting knob 508, which can prevent the stirring shaft 504 from rotating to the lower side of the discharge barrel 11 and affecting the discharge of the discharge barrel 11.

[0050] When the material particles in the equal amount of discharge box 4 are discharged into the extraction cylinder 10, the adjusting knob 508 is rotated to cancel the positioning of the positioning bearing 501 from the transmission rod 6, and then the outer ring of the positioning bearing 501 is rotated so that the several stirring shafts 504 and stirring rods 505 on the outer ring of the positioning bearing 501 are located above the extraction cylinder 10, and then the positioning bearing 501 and the center gear 506 are lowered together, so that the several stirring shafts 504 and stirring rods 505 on the outside of the positioning bearing 501 can fall into the inside of the extraction cylinder 10, and then the transmission rod 6 is driven to rotate through the central rotating shaft 23, and the transmission rod 6 drives the center gear 506 to rotate, and the center gear 506 drives the multiple transmission gears 503 on the outside to rotate, so that the multiple stirring shafts 504 and stirring rods 505 can be driven to stir in different extraction cylinders 10 respectively, thereby improving the mixing effect of the extractant and material particles inside the extraction cylinder 10, improving the extraction effect of the ink on the surface of the material particles, and improving the accuracy of subsequent detection.

[0051] It should be noted that, in the pretreatment method of the food contact material residue detection pretreatment device, when in use, the food contact material is first poured into the interior of the crushing box 1 through the feed barrel 13, and then the servo motor 301 drives the driving gear 302 to rotate, so that the driven gear 303 can rotate, and then the central rotating shaft 23 can be driven to rotate. When the central rotating shaft 23 rotates, the upper fixed ring 32, the lower fixed ring 36, the upper fixed rod 33 and the lower fixed rod 37 are driven to rotate, so that the rotating rod 2101 revolves around the central rotating shaft 23, and the planetary gear 2104 at the upper end of the rotating rod 2101 is meshed with the toothed ring 2105 on the lower surface of the cover plate 2, so that the rotating rod 2101 can rotate while revolving, so that multiple gears on the rotating rod 2101 can rotate. The planetary crushing blades 2103 can rotate while revolving, so that the multiple planetary crushing blades 2103 and the central crushing blade 2002 rotate in opposite directions, so that the food contact material is crushed into food contact material particles. When the crushing is completed, the electric telescopic rod 26 drives the connecting plate 27 to rise and fall, so that the transmission rod 6 can be lowered, so that the slot 31 at the upper end of the transmission rod 6 slides into the clamping rod 3003 on the central rotating shaft 23, so that one end of the clamping rod 3003 is inserted into the slot 31, and when the central rotating shaft 23 rotates, the transmission rod 6 can be driven to rotate. When the transmission rod 6 rotates, the transmission block 1701 and the equal amount of discharge block 17 are driven to rotate through the flat key 28. When the discharge groove 18 on the equal amount of discharge block 17 is aligned with the first When the two discharge holes 22 are connected, the food contact material particles in the crushing box 1 fall into the discharge trough 18. When the food contact material particles fill the discharge trough 18, the equal discharge block 17 continues to rotate. When the discharge trough 18 is connected with the first discharge hole 19, the food contact material particles in the discharge trough 18 can be discharged through the discharge barrel 11, and then the equal amount of food contact material particles fall into the extraction barrel 10. When the crushing is completed, the electric telescopic rod 26 drives the connecting plate 27 to rise and fall, so that the transmission rod 6 can be lowered, so that the slot 31 at the upper end of the transmission rod 6 slides into the clamping rod 3003 on the central shaft 23, so that one end of the clamping rod 3003 is inserted into the slot 31. When the central rotating shaft 23 rotates, the transmission rod 6 can be driven to rotate. When the transmission rod 6 rotates, the transmission block 1701 and the equal amount of discharge block 17 are driven to rotate through the flat key 28. When the discharge trough 18 on the equal amount of discharge block 17 is connected with the second discharge hole 22, the food contact material particles inside the crushing box 1 fall into the inside of the discharge trough 18. When the food contact material particles fill the discharge trough 18, the equal amount of discharge block 17 continues to rotate. When the discharge trough 18 is connected with the first discharge hole 19, the food contact material particles in the discharge trough 18 can be discharged through the discharge barrel 11, and then the equal amount of food contact material particles fall into the inside of the extraction barrel 10. Finally, the valve on the lower liquid barrel 25 is opened.The extract inside the inner cylinder 1002 can be discharged through the water leakage hole 1003, the liquid outlet hole 1004 and the lower liquid hole 24, and then the extract can be discharged through the lower liquid cylinder 25, and the ink residue can be detected by pouring the extract into the high performance liquid chromatograph.

[0052] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A food contact material residue detection pretreatment device, comprising a crushing box (1), characterized in that: The top of the crushing box (1) is provided with a cover plate (2), both sides of the crushing box (1) are provided with feeding cylinders (13), the bottom of the crushing box (1) is provided with an equal amount discharge box (4), a plurality of extraction cylinders (10) are provided below the equal amount discharge box (4), the bottom of the crushing box (1) is provided with a plurality of second discharge holes (22) connected to the equal amount discharge box (4), the bottom of the equal amount discharge box (4) is provided with a plurality of first discharge holes (19) respectively located directly above the extraction cylinders (10), and the inner center of the crushing box (1) is provided with a rotating shaft. A central rotating shaft (23), a driving mechanism (3) for driving the central rotating shaft (23) to rotate is arranged on the upper side of the cover plate (2), a central crushing assembly (20) is arranged on the central rotating shaft (23), a plurality of planetary crushing assemblies (21) are arranged on the circumference of the central rotating shaft (23), a transmission rod (6) is provided on the movable sleeve at the lower end of the central rotating shaft (23) and passes through the crushing box (1) and the equal amount discharge box (4) and extends to the bottom of the equal amount discharge box (4), and a stirring mechanism (5) for stirring the inner sides of the plurality of extraction cylinders (10) is arranged on the transmission rod (6); The upper end of the transmission rod (6) is provided with a slot (31) located inside the central rotating shaft (23), the upper end of the transmission rod (6) is provided with an annular groove (29) located below the slot (31), the outer side of the central rotating shaft (23) is provided with a snap-in assembly (30) intermittently cooperating with the slot (31) and the annular groove (29), the inner side of the equal-volume discharge box (4) is provided with an equal-volume discharge block (17) rotatably arranged, the circumference of the equal-volume discharge block (17) is vertically penetrated with a plurality of discharge grooves (18) respectively cooperating with the first discharge hole (19) and the second discharge hole (22), the inner side of the equal-volume discharge block (17) is provided with a transmission assembly cooperating with the transmission rod (6), and the lower side of the equal-volume discharge box (4) is provided with a plurality of discharge barrels (11) respectively cooperating with the first discharge hole (19); The clamping assembly (30) comprises a fixed cylinder (3001) fixedly arranged on the outside of the central rotating shaft (23); a clamping spring (3002) is arranged on the inside of the fixed cylinder (3001); and a clamping rod (3003) is fixedly arranged at one end of the clamping spring (3002) and slides through the fixed cylinder (3001) and the central rotating shaft (23) and extends to the inside of the central rotating shaft (23); The transmission assembly comprises a flat key (28) fixedly arranged on the outside of a transmission rod (6); a transmission block (1701) is fixedly arranged on the inside of the equal-volume feed block (17); one end of the transmission block (1701) is provided with a transmission groove (1702) that cooperates with the flat key (28); a plurality of support rods (12) are fixedly arranged on the outside of the crushing box (1); a base (7) is commonly arranged at the bottom of the plurality of support rods (12); the lower end of the transmission rod (6) passes through the center of the base (7); an electric telescopic rod (26) is arranged on the lower side of the base (7); and the output end of the electric telescopic rod (26) is provided with a rotationally connected to the lower end of the transmission rod (6). A connecting plate (27) is connected to the base (7), a plurality of lower liquid cylinders (25) are arranged on the lower side of the base (7), a bottom plate (8) is arranged on the upper side of the base (7), a plurality of positioning grooves (9) cooperating with the extraction cylinder (10) are provided on the upper side of the bottom plate (8), a plurality of lower liquid holes (24) respectively connected to the lower liquid cylinders (25) are provided at the bottom of the plurality of positioning grooves (9), the plurality of extraction cylinders (10) include an outer cylinder (1001) and an inner cylinder (1002) arranged inside and outside, a plurality of water leakage holes (1003) are provided on the inner cylinder (1002), and a liquid outlet hole (1004) cooperating with the lower liquid hole (24) is provided at the bottom of the outer cylinder (1001).

2. A food contact material residue detection pretreatment device according to claim 1, characterized in that: The driving mechanism (3) comprises a servo motor (301) fixedly arranged on the upper side of the cover plate (2), a driving gear (302) fixedly arranged on the output end of the servo motor (301), and a driven gear (303) fixedly sleeved on the upper end of the central rotating shaft (23) meshing with one side of the driving gear (302).

3. A food contact material residue detection pretreatment device according to claim 2, characterized in that: The central crushing assembly (20) comprises a central ring (2001) fixedly mounted on a central rotating shaft (23) by means of screws, a plurality of central crushing blades (202) being arranged at equal intervals on the outer circumference of the central ring (2001), arc sweeping rods (38) being arranged at equal intervals on the lower end circumference of the central rotating shaft (23) and being slidable with the bottom of the crushing box (1), and an observation window (16) being arranged on the front side of the crushing box (1).

4. A food contact material residue detection pretreatment device according to claim 3, characterized in that: The planetary crushing assembly (21) comprises an upper fixing ring (32) fixedly sleeved on the upper end of a central rotating shaft (23) by means of screws, a plurality of upper fixing rods (33) being equidistantly arranged on the outer circumference of the upper fixing ring (32), a lower fixing ring (36) being fixedly sleeved on the lower end of the central rotating shaft (23) by means of screws, a plurality of lower fixing rods (37) being equidistantly arranged on the outer circumference of the lower fixing ring (36), a rotating rod (2101) being rotatably sleeved between the upper fixing rod (33) and the lower fixing rod (37) being located on the same vertical line, a plurality of planetary rings (2102) being fixedly arranged on the rotating rod (2101) by means of screws, a plurality of planetary crushing blades (2103) being equidistantly arranged on the circumference of the plurality of planetary rings (2102), a plurality of planetary gears (2104) being fixedly arranged on the upper ends of the plurality of rotating rods (2101), and a gear ring (2105) being simultaneously meshed with the plurality of planetary gears (2104) being fixedly arranged on the lower surface of the cover plate (2).

5. A food contact material residue detection pretreatment device according to claim 4, characterized in that: The central rotating shaft (23) is a hollow rod. A mounting ring (34) located inside the crushing box (1) is arranged on the outside of the central rotating shaft (23) by means of screws. A plurality of nozzles (35) communicating with the inside of the central rotating shaft (23) are arranged on the outside of the mounting ring (34). An adapter (15) fixedly connected to the upper side of the cover plate (2) is rotatably arranged on the upper end of the central rotating shaft (23). A water inlet pipe (14) communicating with the inside of the central rotating shaft (23) is arranged on the upper side of the adapter (15).

6. A food contact material residue detection pretreatment device according to claim 1, characterized in that: The stirring mechanism (5) comprises a positioning bearing (501) sleeved on a transmission rod (6); a plurality of positioning rods (502) are equidistantly arranged on the outer circumference of the positioning bearing (501); a stirring shaft (504) is rotatably arranged at one end of each of the positioning rods (502); a plurality of stirring rods (505) are arranged at the lower end of the stirring shaft (504); a transmission gear (503) is fixedly sleeved on the upper end of each of the stirring shafts (504); a convex rod (601) is fixedly arranged on the outer side of the transmission rod (6); a central gear (506) is vertically slidably arranged on the transmission rod (6) and is slidably connected to the convex rod (601) and meshes with the plurality of transmission gears (503); an adjusting cylinder (507) is fixedly arranged on the upper side of the positioning bearing (501); and an adjusting knob (508) is arranged on the adjusting cylinder (507) and cooperates with the transmission rod (6).

7. A pretreatment method based on the food contact material residue detection pretreatment device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1: First, pour the food contact material into the interior of the crushing box (1) through the feeding barrel (13), and drive the central rotating shaft (23) to rotate through the driving mechanism (3). When the central rotating shaft (23) rotates, the upper fixing ring (32), the lower fixing ring (36), the upper fixing rod (33) and the lower fixing rod (37) are driven to rotate, so that the rotating rod (2101) revolves around the central rotating shaft (23), and the planetary gear (2104) at the upper end of the rotating rod (2101) is meshed with the gear ring (2105) on the lower surface of the cover plate (2), so that the rotating rod (2101) rotates while revolving, and the multiple planetary crushing blades (2103) on the rotating rod (2101) rotate while revolving, so that the multiple planetary crushing blades (2103) and the central crushing blade (2002) rotate in opposite directions, so that the food contact material is crushed into food contact material particles; S2: After the crushing is completed, the connecting plate (27) is driven to rise and fall by the electric telescopic rod (26), so that the transmission rod (6) is lowered, so that the clamping groove (31) at the upper end of the transmission rod (6) slides into the clamping rod (3003) on the central rotating shaft (23). When the central rotating shaft (23) rotates, the transmission rod (6) is driven to rotate. When the transmission rod (6) rotates, the transmission block (1701) and the equal-volume discharge block (17) are driven to rotate through the flat key (28). When the discharge groove (18) on the equal-volume discharge block (17) and the equal-volume discharge block (17) are connected, the transmission rod (6) is driven to rotate. When the second discharge hole (22) is in communication with each other, the food contact material particles in the crushing box (1) fall into the discharge trough (18). When the discharge trough (18) is filled with the food contact material particles, the equal discharge block (17) continues to rotate. When the discharge trough (18) is in communication with the first discharge hole (19), the food contact material particles in the discharge trough (18) are discharged through the discharge barrel (11), thereby causing the equal amount of food contact material particles to fall into the extraction barrel (10). S3: When an equal amount of food contact material particles falls into the inner cylinder (1002), an ink extractant is injected into the inner cylinder (1002) through a syringe, and then the adjusting knob (508) is turned to cancel the positioning of the positioning bearing (501) from the transmission rod (6), so that the positioning bearing (501) and the center gear (506) descend together, so that the plurality of stirring shafts (504) and stirring rods (505) outside the positioning bearing (501) fall into the interior of the extraction cylinder (10), and then the transmission rod (6) is driven to rotate through the central rotating shaft (23), the transmission rod (6) drives the center gear (506) to rotate, and the center gear (506) drives the plurality of transmission gears (503) on the outside to rotate, thereby driving the plurality of stirring shafts (504) and stirring rods (505) to stir inside different extraction cylinders (10) respectively; S4: Finally, the valve on the lower liquid cylinder (25) is opened, so that the extract inside the inner cylinder (1002) is discharged through the water leakage hole (1003), the liquid outlet hole (1004) and the lower liquid hole (24), and then the extract is discharged through the lower liquid cylinder (25), and the ink residue is detected by pouring the extract into a high performance liquid chromatograph.

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