Packaging material pollutant rapid treatment and detection device

Abstract

The utility model discloses a packaging material pollutant rapid treatment and detection device, which comprises a migration mechanism, a liquid inlet mechanism and a detection mechanism, the migration mechanism comprises a plurality of migration pools, a heating device and a heat exchange mechanism, the heating device and the heat exchange mechanism are arranged on the migration pools, and the plurality of migration pools are communicated with the detection mechanism through the liquid inlet mechanism; the device further comprises a flushing mechanism, the flushing mechanism comprises a cleaning liquid storage box, and the cleaning liquid storage box is detachably connected with the migration pool through a cleaning pipe. According to the utility model, the structure of the existing migration mechanism is improved, and migration liquid is heated and cooled by utilizing the arranged heating device and heat exchange mechanism, so that the migration speed and the treatment efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of food safety, in particular to a device for quickly processing and detecting pollutants in packaging materials. Background Art

[0002] In recent years, due to frequent problems with food packaging safety, people have paid more attention to the safety of food packaging. Most food packaging is made of paper and plastic materials. Because it is in direct contact with food, it may produce harmful substances and contaminate food under long-term light and temperature conditions. The advantage of paper packaging is good ductility and less harm to the environment; the advantage of plastic packaging is greater elasticity and strong plasticity, so these two packaging materials are widely used in food packaging. However, in order to make the packaging look more beautiful and more durable, many merchants will add various additives to the packaging, which will cause the packaging materials to contaminate food and pose a threat to people's health.

[0003] At present, my country has formulated corresponding regulations to restrict the amount of harmful substances added to food packaging. At the same time, it has formulated standard specifications for the detection of harmful substances in food packaging, including heavy metals such as chromium, cadmium, arsenic, lead, fluorescent dyes, polychlorinated biphenyls, phenols, formaldehyde, soluble organic matter, volatiles, styrene, vinyl chloride and other indicators, to ensure the safety of the food packaging industry. Before testing, the harmful substances on the food packaging need to be migrated into the food simulation liquid to form the test liquid, and then the content of the harmful substances is detected by the testing agency. The commonly used migration method is immersion, and finally the immersion liquid is taken for testing. This common immersion migration method has low migration efficiency, low quality, and unstable test results. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a packaging material pollutant rapid processing and detection device.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A device for rapid processing and detection of packaging material pollutants comprises a migration mechanism, a liquid inlet mechanism and a detection mechanism. The migration mechanism comprises a plurality of migration pools, and a heating device and a heat exchange mechanism arranged on the migration pools. The plurality of migration pools are connected to the detection mechanism via the liquid inlet mechanism. The device also comprises a flushing mechanism, which comprises a cleaning liquid storage box, and the cleaning liquid storage box is detachably connected to the migration pool via a cleaning pipe.

[0007] Preferably, the migration pool includes a bottom plate, a migration groove with a top passing therethrough is provided on the bottom plate, a cover plate is provided at the top port of the migration groove, and the cover plate and the bottom plate are connected by bolts, and a sealing gasket is arranged at the contact portion between the migration groove and the cover plate.

[0008] Preferably, the cover plate is provided with a liquid injection pipe and an exhaust pipe, the exhaust pipe is provided with a pressure-stabilizing valve, and the liquid injection pipe is provided with a valve.

[0009] Preferably, the heat exchange mechanism comprises a medium circulation loop that simultaneously passes through a plurality of migration tanks, the medium circulation loop is provided with a circulation pump and a medium injection port, and a heat dissipation device is provided at a portion of the medium circulation loop that is located outside the migration tank.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. The utility model improves the structure of the existing migration mechanism, and utilizes the provided heating device and heat exchange mechanism to heat and cool the migration liquid, thereby improving the migration speed, quality and processing efficiency.

[0012] 2. The multiple migration pools can be used in combination to simultaneously migrate harmful substances on various food contact materials and products into corresponding food simulation solutions to form different test solutions, thereby improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the migration pool of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the heat exchange mechanism of the utility model;

[0016] Figure 4 It is a structural schematic diagram of the liquid inlet mechanism of the utility model;

[0017] Figure 5 It is a structural diagram of the detection mechanism.

[0018] Figure symbols: 1. Migration mechanism, 11. Migration pool, 110. Bottom plate, 111. Migration groove, 112. Cover plate, 113. Sealing pad, 114. Liquid injection pipe, 115. Exhaust pipe, 12. Heating device, 13. Heat exchange mechanism, 131. Medium circulation loop, 132. Circulation pump, 133. Medium injection port, 134. Heat dissipation device, 2. Liquid inlet mechanism, 21. Multi-way reversing valve, 22. Simulation liquid storage pool, 23. Color development liquid storage pool, 24. Three-way reversing valve, 25. Mixing tank, 26. Flow control valve, 27. Booster pump, 3. Detection mechanism, 31. Degassing tube, 32. Liquid core waveguide tube, 33. Sealed chamber, 34. Vacuum pump, 35. Three-way pipe, 36. Quartz light window, 37. Light-emitting diode, 38. Photoelectric detector, 4. Flushing mechanism, 41. Cleaning liquid storage box, 42. Cleaning pipe. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0020] Example 1

[0021] like Figure 1 The device for rapid processing and detecting contaminants in packaging materials shown in the figure comprises a migration mechanism 1, a liquid inlet mechanism 2 and a detection mechanism 3. The migration mechanism 1 comprises a plurality of migration pools 11, and a heating device 12 and a heat exchange mechanism 13 arranged on the migration pools 11. The plurality of migration pools 11 are connected to the detection mechanism 3 through the liquid inlet mechanism 2.

[0022] It also includes a flushing mechanism 4 , which includes a cleaning liquid storage tank 41 , and the cleaning liquid storage tank 41 is detachably connected to the migration pool 11 through a cleaning pipe 42 .

[0023] In specific implementation, food contact materials and products are placed in the migration pool 11, and food simulation liquid is injected into the migration pool 11 at the same time so that harmful substances on food contact materials and products migrate into the food simulation liquid to form a detection liquid. Then the liquid inlet mechanism 2 injects the detection liquid into the detection mechanism 3 to detect the amount of harmful substances added. In the process of harmful substances migrating into the food simulation liquid, the simulation liquid is heated by the heating device 12 to increase the migration rate. At the same time, the migration quality is ensured by heating, thereby improving the detection efficiency and ensuring the stability of the detection results. After the migration is completed, the detection liquid is quickly cooled by the heat exchange mechanism 13, so that the detection liquid can be injected into the detection mechanism 3 for inspection more quickly, thereby reducing time consumption and indirectly improving the detection efficiency.

[0024] In this embodiment, by using multiple migration pools 11 in combination, harmful substances on multiple food contact materials and products can be simultaneously migrated into corresponding food simulation liquids to form different detection liquids, thereby improving the detection efficiency. Specifically, before injecting the second detection liquid into the detection mechanism 3 for detection, the liquid inlet mechanism 2 is first cleaned by the flushing mechanism 4 to avoid cross contamination. Specifically, the cleaning liquid storage box 41 injects cleaning liquid into the migration pool 11 loaded with the first detection liquid through the cleaning pipe 42. The cleaning liquid is cleaned after passing through the liquid inlet mechanism 2 and the detection mechanism 3. In order to ensure that the cleaning liquid has sufficient pressure to flow into the migration pool 11, a cleaning pump is provided on the cleaning pipe 42.

[0025] The above-mentioned food simulant is the food simulant in the "General Rules for Migration Test of Food Contact Materials and Articles in National Food Safety Standard Food Contact Materials and Articles" GB 31604.1-2023 of the National Standard of the People's Republic of China. Different food contact materials and articles correspond to different food simulants. The migration time is different at different temperatures. The higher the temperature, the shorter the migration time. For details, please refer to the error table of migration test temperature and time in Appendix C.

[0026] like Figure 1 and Figure 4 As shown, the above-mentioned liquid inlet mechanism 2 includes a multi-way reversing valve 21, a simulated liquid storage tank 22, a color developing liquid storage tank 23, a three-way reversing valve 24 and a mixing tank 25. Specifically, multiple migration pools 11 are connected to the multi-way reversing valve 21 one by one through a first connecting pipe, the multi-way reversing valve 21 is connected to the simulated liquid storage tank 22 through a second connecting pipe, the simulated liquid storage tank 22 and the color developing liquid storage tank 23 are connected to the three-way reversing valve 24 one by one through a third connecting pipe, the three-way reversing valve 24 is connected to the mixing tank 25 through a fourth connecting pipe, and the mixing tank 25 is connected to the detection mechanism 3 through a fifth connecting pipe. A flow control valve 26 is provided on the third connecting pipe, a boost pump 27 is provided on the fourth connecting pipe, and a flow path control valve is provided on the fifth connecting pipe.

[0027] like Figure 1 and Figure 5 As shown, the above-mentioned detection mechanism 3 is the detection mechanism disclosed in the applicant's prior application No. 2024208701418, specifically, it includes a degassing tube 31 and a liquid core waveguide tube 32, the liquid core waveguide tube 32 runs through the degassing tube 31, and a sealed cavity 33 is formed between the liquid core waveguide tube 32, the sealed cavity 33 is connected to a vacuum pump 34 through an exhaust pipe, and both ends of the liquid core waveguide tube 32 are provided with a three-way tube 35, one end of the three-way tube 35 is used as a port for light to pass through, and is sealed by a quartz light window 36, and the other end is used as a port for the detection liquid to pass through, near the two ends of the liquid core waveguide tube A light emitting diode 37 and a photodetector 38 are arranged at the positions thereof, a three-way tube 35 is located at one end of a quartz light window 36, and optical fibers are arranged through flanges in a direction away from the liquid core waveguide 1, a collimator is provided at the end of the optical fiber, and the quartz light window 36, the light emitting diode 37, the photodetector 38, the optical fiber, the collimator and the liquid core waveguide 1 are all in the same straight line to constitute the above-mentioned detection structure 3; one of the three-way tubes 35 is connected to a drain pipe at a port for allowing detection liquid to pass through, and the other three-way tube 35 is connected to a fifth connecting tube at a port for allowing detection liquid to pass through.

[0028] As a preferred solution of the above embodiment, when heating the food simulating liquid, considering the problem that the food simulating liquid is easy to volatilize, further, as Figure 2As shown, the migration pool 11 includes a base plate 110, and a migration groove 111 with a top passing therethrough is provided on the base plate 110. A cover plate 112 is provided at the top port of the migration groove 111, and the cover plate 112 is connected to the base plate 110 by bolts. A sealing gasket 113 is arranged at the contact portion between the migration groove 111 and the cover plate 112, thereby achieving sealing of the migration groove 111, wherein an injection pipe 114 and an exhaust pipe 115 are provided on the cover plate 112, and a pressure-stabilizing valve is provided on the exhaust pipe 115. The injection pipe 114 is used to inject cleaning liquid in the cleaning liquid storage tank 41, and a valve is provided on it.

[0029] As a preferred solution of the above embodiment, Figure 1 and Figure 3 As shown, the heat exchange mechanism 13 includes a medium circulation loop 131 that simultaneously passes through multiple migration tanks 11. The medium circulation loop 131 is provided with a circulation pump 132 and a medium injection port 133. The portion of the medium circulation loop 131 located outside the migration tank 111 is provided with a heat dissipation device 134. The heat dissipation device 134 can be a heat sink, a heat dissipation fan or a refrigeration device.

[0030] Of course, the present invention may have many other implementation modes. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A device for rapid processing and detection of packaging material contaminants, comprising a migration mechanism (1), a liquid inlet mechanism (2) and a detection mechanism (3), characterized in that: The migration mechanism (1) comprises a plurality of migration pools (11), and a heating device (12) and a heat exchange mechanism (13) arranged on the migration pools (11); the plurality of migration pools (11) are connected to a detection mechanism (3) via a liquid inlet mechanism (2); It also comprises a flushing mechanism (4), wherein the flushing mechanism (4) comprises a cleaning liquid storage tank (41), and the cleaning liquid storage tank (41) is detachably connected to the migration tank (11) via a cleaning pipe (42).

2. The packaging material contaminant rapid processing and detection device according to claim 1 is characterized in that: The migration pool (11) comprises a bottom plate (110), the bottom plate (110) is provided with a migration groove (111) with a top through-going thereon, a cover plate (112) is provided at the top port of the migration groove (111), and the cover plate (112) and the bottom plate (110) are connected by bolts, and a sealing gasket (113) is arranged at the contact portion between the migration groove (111) and the cover plate (112).

3. The packaging material contaminant rapid processing and detection device according to claim 2 is characterized in that: The cover plate (112) is provided with a liquid injection pipe (114) and an exhaust pipe (115); the exhaust pipe (115) is provided with a pressure stabilizing valve, and the liquid injection pipe (114) is provided with a valve.

4. The packaging material contaminant rapid processing and detection device according to claim 1, characterized in that: The heat exchange mechanism (13) comprises a medium circulation loop (131) that simultaneously passes through a plurality of the migration tanks (11); the medium circulation loop (131) is provided with a circulation pump (132) and a medium injection port (133); and a heat dissipation device (134) is provided at a portion of the medium circulation loop (131) located outside the migration tank (111).

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