Light-proof anti-oxidation type capsanthin storage structure

Abstract

The utility model discloses a light-proof anti-oxidation type capsanthin storage structure, which belongs to the technical field of capsanthin storage and comprises a storage bottle body, a light-proof anti-oxidation layer, a light-proof anti-oxidation layer and a light-proof anti-oxidation layer. The heat preservation box body is nested outside the storage bottle body, a positioning groove is formed in the surface of the top of the heat preservation box body, and a positioning convex block matched with the positioning groove is arranged at the corresponding position of the bottom of the heat preservation box body; the heat preservation box body is composed of a polyurethane foaming layer, the thickness of the polyurethane foaming layer is 30-50 mm, a black light-proof cloth lining layer is attached to the inner surface of the heat preservation box body, the outer surface of the heat preservation box body is coated with a sunscreen coating layer, and the thickness of the sunscreen coating layer is 5-10 mm. According to the paprika red pigment packaging box, photothermal induced pigment degradation is inhibited through the synergistic effect of the composite light-proof material and the heat insulation layer, meanwhile, the mechanical stacking design is optimized to improve the transportation stability, and the paprika red pigment packaging box is mainly suitable for long-acting light-proof, anti-oxidation storage and large-scale logistics scenes of paprika red pigment in the industries of food and cosmetics.

Description

TECHNICAL FIELD

[0001] The utility model relates to a capsicum red pigment storage technical field more specifically, the utility model relates to a kind of light-protecting antioxidant type capsicum red pigment storage structure. BACKGROUND

[0002] Capsicum red pigment is widely used in food, cosmetics and pharmaceutical field as natural food pigment due to its bright color, safety and other characteristics.However, the pigment molecule structure contains polyene conjugated system, which is extremely sensitive to light, heat and oxygen, and is prone to photo-oxidative degradation and thermal isomerization reaction, resulting in color value decrease and quality deterioration.The traditional storage method faces the following technical bottlenecks:

[0003] Insufficient light-shielding performance: ordinary glass or transparent plastic container has high transmittance, and the penetration of ultraviolet and visible light leads to accelerated decomposition of the pigment.The existing light-shielding paint mainly uses single-layer aluminum foil, which is easy to fall off due to mechanical friction, and it is difficult to achieve the requirement of deep light-shielding with transmittance <1%.

[0004] Poor thermal stability: the conventional foam box has a thermal conductivity coefficient >0.035 W / (m·K), and the internal temperature rises rapidly in high temperature environment (>30℃), which cannot meet the requirement of maintaining temperature below 5℃ for long-term storage of capsicum red pigment.

[0005] Defects in structural design: the separation design of storage container and insulation box leads to poor stacking stability, and the multiple layers are prone to tilt and slide;the insufficient sealing of the box leads to the penetration of external oxygen, which reacts with the pigment.

[0006] High maintenance cost: the traditional cold chain storage relies on dry ice or electric refrigeration, and the dry ice sublimation needs to be replenished frequently, while the electric equipment has high energy consumption and poor portability, which is difficult to adapt to small and medium-sized storage scenarios. SUMMARY

[0007] An object of the present utility model is to solve at least the above problems and / or defects, and to provide at least the advantages to be explained later.

[0008] The utility model aims at providing a light-protecting antioxidant type capsicum red pigment storage structure, which solves the problems of pigment oxidative degradation and low transportation stability caused by insufficient light-shielding performance, poor thermal stability and stacking structure defects in the prior art, and inhibits the light-heat-induced degradation of the pigment through the synergistic effect of composite light-shielding material and thermal insulation layer, while optimizing the mechanical stacking design to improve the transportation stability, mainly suitable for long-term light-shielding, antioxidant storage and large-scale logistics scenarios of capsicum red pigment in food and cosmetic industry.

[0009] In order to achieve the purpose and other advantages according to the utility model, a light-protecting antioxidant type capsicum red pigment storage structure is provided, which comprises:

[0010] A storage bottle body is provided with an opening at the top;

[0011] A heat preservation box body is nested outside the storage bottle body, the top surface of the heat preservation box body is provided with a positioning groove, and the bottom corresponds to the position provided with a positioning protrusion matched with the positioning groove; the heat preservation box body is composed of a polyurethane foaming layer, the thickness of the polyurethane foaming layer is 30-50 mm, the inner surface of the heat preservation box body is pasted with a black light-proof cloth lining layer, and the outer surface is coated with a sunscreen paint layer, and the thickness of the sunscreen paint layer is 5-10 mm.

[0012] Preferably, wherein the light-proof and antioxidant type capsicum red pigment storage structure further comprises:

[0013] A screw cap assembly is connected with the opening through a trapezoidal thread, an annular groove is opened in the inner wall of the screw cap assembly, and a silica gel sealing ring is embedded in the annular groove;

[0014] A nitrogen buffer cavity is arranged at the bottom of the storage bottle body, and is communicated with the storage cavity located above through a pressure regulating valve, and is communicated with an external gas source through a one-way inflation valve.

[0015] Preferably, wherein the depth of the positioning groove is 5 mm, the inclination angle of the inner wall of the positioning groove is 15°, the height of the positioning protrusion is 4.8 mm, and the outer diameter of the positioning protrusion is smaller than the inner diameter of the positioning groove by 0.5 mm.

[0016] Preferably, wherein the axial section of the silica gel sealing ring is trapezoidal, the bottom surface of the silica gel sealing ring is in contact with the bottom surface of the annular groove, and the top surface of the silica gel sealing ring is in interference fit with the end surface of the opening.

[0017] Preferably, wherein the light-proof and antioxidant type capsicum red pigment storage structure further comprises:

[0018] A clamping groove is arranged in the inner wall of the heat preservation box body;

[0019] A detachable ice block is detachably clamped in the clamping groove, the detachable ice block is a metal shell filled with a phase change material, and the outer surface of the detachable ice block is provided with a clamping buckle structure matched with the clamping groove.

[0020] Preferably, wherein the black light-proof cloth lining layer is connected with the inner wall of the heat preservation box body through a magic tape, and the surface roughness Ra of the black light-proof cloth lining layer is ≤3.2 μm.

[0021] Preferably, wherein the middle part of the bottle body of the storage bottle body is provided with an embedded installation groove, a temperature label is fixed in the installation groove through epoxy resin glue, and the surface of the temperature label is flush with the outer wall of the storage bottle body.

[0022] The utility model discloses at least the following beneficial effects:

[0023] Firstly, the light-proof and oxidation-resistant capsicum red pigment storage structure of the utility model inhibits the pigment degradation induced by light and heat through the synergistic effect of the composite light-proof material and the heat insulation layer, and simultaneously optimizes the mechanical stacking design to improve the transportation stability.

[0024] Secondly, the light-proof and oxidation-resistant capsicum red pigment storage structure of the utility model forms multi-stage sealing through the cooperation of the silica gel sealing ring (compression rate 20%) and the trapezoidal thread, and the sealing property is improved compared with the conventional threaded cap sealing property; the nitrogen buffer cavity dynamically balances the positive pressure in the bottle through the pressure regulating valve, when the pressure in the storage cavity decreases due to temperature fluctuation, the buffer cavity automatically releases nitrogen to supplement, the one-way inflation valve supports the external gas source to quickly supplement nitrogen, and the secondary oxygen pollution caused by frequent opening of the cap is avoided.

[0025] Thirdly, the light-proof and oxidation-resistant capsicum red pigment storage structure of the utility model allows the self-adaptive adjustment of the slight position deviation during stacking through the precise dimensional tolerance of the positioning groove and the positioning block, simultaneously, the 15° inclined inner wall guides the positioning block to quickly align, the time-consuming of manual alignment is reduced, the interlayer friction force is enhanced, and the vibration working condition requirement of the heavy logistics equipment is met.

[0026] Fourthly, the light-proof and oxidation-resistant capsicum red pigment storage structure of the utility model generates radial expansion force when the silica gel sealing ring with trapezoidal section is screwed, and the radial expansion force and the interference amount of the bottle opening end surface jointly form the axial and radial double sealing interfaces.

[0027] Fifthly, the light-proof and oxidation-resistant capsicum red pigment storage structure of the utility model maintains the low-temperature environment in the heat preservation box through the detachable ice block, the metal shell of the detachable ice block accelerates the cold release, the phase change material maintains the temperature in the box to be less than or equal to 5 DEG C for 72 hours, the temperature control time length is improved by 50% compared with the traditional ice bag, the guide rail clamping structure supports the ice block to be disassembled manually, and the operation is convenient.

[0028] Sixthly, the light-proof and oxidation-resistant capsicum red pigment storage structure of the utility model realizes the quick replacement of the light-proof cloth through the magic tape connection, the light-proof cloth is convenient to clean or replace when damaged, the operation and maintenance cost is reduced, the rough surface with Ra≤3.2 μm further reduces the light transmittance through the diffuse reflection, and the secondary light pollution caused by the mirror surface reflection is avoided.

[0029] Seventhly, the light-proof and oxidation-resistant capsicum red pigment storage structure of the utility model protects the temperature label from external collision damage through the embedded installation groove, and the label is designed to be flush to avoid scratching and falling off during transportation.

[0030] Other advantages, objects and features of the utility model will be embodied partly through the following description, and will be understood by the person skilled in the art through the research and practice of the utility model. DRAWINGS

[0031] Fig. 1 is a structure schematic view of the light-proof and oxidation-resistant type capsicum red pigment storage structure of one embodiment of the utility model, and

[0032] Fig. 2 is a structure schematic view of the detachable ice rack in the light-proof and oxidation-resistant type capsicum red pigment storage structure of one embodiment of the utility model, and

[0033] Reference signs: 1: storage bottle body, 2: heat preservation box body, 200: positioning groove, 210: positioning convex block, 220: sunscreen coating layer, 3: screw cap assembly, 4: nitrogen buffer cavity, 5: storage cavity, 6: pressure regulating valve, 7: one-way inflation valve, 8: detachable ice rack, 800: buckle structure, 9: temperature label. DETAILED DESCRIPTION

[0034] The utility model will be further explained in detail in combination with the drawings, so that the person skilled in the art can implement according to the description of the specification.

[0035] It should be understood that the terms such as "have", "contain" and "include" used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0036] It should be noted that in the description of the utility model, the orientation or positional relationship indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0037] It should be noted that the control method in the following technical solution is a conventional method unless otherwise specified, and the device structure can be obtained from commercial channels unless otherwise specified.

[0038] For example, Figs. 1-2 The utility model provides a kind of light-proof and oxidation-resistant type capsicum red pigment storage structure, comprising:

[0039] Storage bottle body 1, its top is equipped with opening;

[0040] A heat preservation box 2 is nested outside the storage bottle body 1, a positioning groove 200 is arranged on the top surface of the heat preservation box 2, and a positioning protrusion 210 matched with the positioning groove 200 is arranged at the corresponding position of the bottom; the heat preservation box 2 is composed of a polyurethane foaming layer, the thickness of the polyurethane foaming layer is 30-50 mm, a black light-proof cloth lining layer is attached to the inner surface of the heat preservation box 2, and a sunscreen coating layer 220 is coated on the outer surface, and the thickness of the sunscreen coating layer 220 is 5-10 mm.

[0041] In the above technical scheme, the polyurethane foaming layer is a closed-cell foam material generated by the reaction of isocyanate and polyol, the density is 40-60 kg / m³, and the closed-cell rate is greater than or equal to 90%; the black light-proof cloth lining layer is made of a terylene base cloth coated with a carbon black coating layer, the thickness is 0.5-1 mm, and the visible light reflectivity is less than 5%; the sunscreen coating layer 220 takes acrylic resin as a base material, adds nano titanium dioxide (particle size 20-50 nm) and an ultraviolet absorber (benzotriazole), and the solid content is greater than or equal to 65%. The storage bottle body 1 is formed by injection molding, the inner layer is black PET (transmittance less than 1%), and the outer layer is an aluminum foil composite film (102) which forms a double-layer structure through hot pressing adhesion (temperature 180 DEG C, pressure 0.8 MPa). The polyurethane foaming layer of the heat preservation box 2 is formed by mold casting, the foaming density is 45 kg / m³, the flash is cut off after curing, and the thickness tolerance is ensured to be ±1 mm. The black light-proof cloth lining layer is connected and attached to the inner wall of the heat preservation box 2 through a magic tape. The sunscreen coating layer 220 is sprayed by high-pressure airless spraying (pressure 25 MPa), is coated on the outer wall of the heat preservation box 2 twice, and is dried for 2 hours, and the total thickness is 8 mm.

[0042] The positioning groove 200 is processed to the top of the heat preservation box 2 through CNC milling, the groove depth is 5 mm, the inner wall is inclined at an angle of 15 DEG, and the surface roughness is Ra 3.2 mu m. The positioning protrusion 210 is made of a polyurethane foaming block of the same material as the heat preservation box 2, the protrusion height is 4.8 mm, and the outer diameter is smaller than the inner diameter of the groove by 0.5 mm.

[0043] The light-proof and heat insulation principle is as follows: when light is incident on the sunscreen coating layer 220, nano titanium dioxide blocks ultraviolet rays (wavelength 200-400 nm) through scattering and absorption, and the remaining visible light is absorbed by the black light-proof cloth lining layer, and the transmittance is reduced to less than 1%. The closed-cell structure of the polyurethane foaming layer inhibits heat convection, and the temperature difference between the inside and outside of the box reaches 35 DEG C at an ambient temperature of 40 DEG C.

[0044] Stacking stability: when stacking, the positioning protrusion 210 of the lower heat preservation box 2 is embedded in the positioning groove 200 of the upper heat preservation box 2, the 0.5 mm gap allows ±2 DEG horizontal deflection self-adaptive adjustment, and the 15 DEG inclined surface guides rapid alignment. The positioning protrusion 210 is elastically deformed (compression amount 0.2 mm) after being pressed, and the transportation vibration is offset through friction.

[0045] Final effect: light transmittance test (GB / T 2410): 0.8% (wavelength 550 nm); thermal insulation performance (GB / T 10295): thermal conductivity 0.023 W / (m·K); stacking test (GB / T 4857.3): 5 layers of stacking (total weight 500 kg) without sliding at 15° inclination.

[0046] In another technical solution, the light-proof antioxidant type capsicum red pigment storage structure further comprises:

[0047] A screw cap assembly 3 is connected to the opening through a trapezoidal thread, an inner wall of the screw cap assembly 3 is provided with an annular groove, and a silica gel sealing ring is embedded in the annular groove;

[0048] A nitrogen buffer cavity 4 is arranged at the bottom of the storage bottle body 1, and communicates with the storage cavity 5 located above the nitrogen buffer cavity 4 through a pressure regulating valve 6. The nitrogen buffer cavity 4 communicates with an external gas source through a one-way inflation valve 7.

[0049] In the above technical solution, the screw cap assembly 3 is injection molded by PP material, and the annular groove (width 2 mm, depth 1.8 mm) in the inner wall is formed by a sliding block core mold. The pitch of the trapezoidal thread is 3 mm, the tooth type angle is 30°, the thread height is 1.5 mm, and the lead angle is 5°. The silica gel sealing ring (hardness 50 Shore A) is embedded in the groove after being pre-compressed by 20%, and the interference amount is 0.4 mm. The bottom of the storage bottle body 1 is reserved for the nitrogen buffer cavity 4 (diameter 60 mm, height 30 mm), the volume of the nitrogen buffer cavity 4 is 30% of the storage cavity 5, a porous ceramic diffusion plate (pore size 50 μm) is arranged in the nitrogen buffer cavity 4, and a pressure regulating valve 6 (opening pressure difference 0.5 kPa) is arranged between the nitrogen buffer cavity 4 and the storage cavity 5. The one-way inflation valve 7 (spring force 1.5 N) is welded to the bottom of the storage bottle body 1, and is connected to an external nitrogen source (purity ≥ 99.99%).

[0050] The sealing process: when the screw cap assembly 3 is tightened, the lead angle of the trapezoidal thread generates an axial locking force (about 15 N·m), and the silica gel sealing ring is extruded to expand radially to fill the gap between the opening and the storage bottle body.

[0051] The nitrogen filling process operation: first, the storage bottle body 1 is vacuumized to-90 kPa to remove more than 99% of the initial oxygen; nitrogen is filled to normal pressure, and the vacuum-nitrogen filling cycle is repeated 3 times to ensure that the residual oxygen is less than 0.1%; nitrogen is filled to 5-10 kPa positive pressure, and then the screw cap is immediately tightened to lock the gas by using the silica gel sealing ring (compression rate 20%).

[0052] Nitrogen dynamic balance: When the storage cavity 5 causes the pressure to drop due to temperature reduction, the pressure regulating valve 6 is automatically opened, and the nitrogen in the buffer cavity 4 is slowly released through the porous ceramic plate to maintain a positive pressure of 5-10 kPa. When external air is supplied, nitrogen is injected into the nitrogen buffer chamber 4 at a rate of 5 L / min through the one-way valve (7).

[0053] The conjugated double bonds in capsicum red pigment are prone to oxidation reaction with oxygen, resulting in fading and degradation of active ingredients. Filling nitrogen can replace the air (oxygen content is reduced to <0.1%) in the storage bottle body 1, eliminating the gas phase environment of the oxidation reaction from the source.

[0054] Final effect: residual oxygen content (GB / T 6285): 0.08%; sealing test (ASTM D3078): leakage rate 0.008 mL / (m²·d); air supply efficiency: complete pressure recovery to 8 kPa within 30 seconds.

[0055] In another technical solution, the depth of the positioning groove 200 is 5 mm, the inner wall of the positioning groove 200 has an inclination angle of 15°, the height of the positioning protrusion 210 is 4.8 mm, and the outer diameter of the positioning protrusion 210 is 0.5 mm smaller than the inner diameter of the positioning groove 200.

[0056] In the above technical solution, the inclination angle is the included angle between the inner wall of the positioning groove 200 and the vertical surface, and the normal pressure component of the contact surface is calculated by a trigonometric function. The outer diameter of the positioning protrusion 210 is 0.5 mm smaller than the inner diameter of the positioning groove, i.e. the outer diameter tolerance is 0.5 mm, forming a H7 / g6 fitting level.

[0057] The positioning groove 200 is CNC milled by a 15° taper milling cutter to the top of the heat preservation box body 2 at a feed speed of 500 mm / min, and the cooling liquid is water-based emulsion. The groove depth is 5 mm, the inner wall is inclined at 15°, and the surface roughness is Ra 3.2 μm. The positioning protrusion 210 is injected into a mold (cavity height 4.8 mm) made of the same material as the heat preservation box body 2, and after demolding, the surface is sprayed with a polyurea coating (thickness 0.1 mm) to enhance wear resistance. The height of the protrusion is 4.8 mm, and the outer diameter is 0.5 mm smaller than the inner diameter of the groove. In order to avoid wear when stacking, the surfaces of the positioning groove 200 and the positioning protrusion 210 are hardened and sprayed with polyurea, with a spraying thickness of 5 mm.

[0058] Stacking guidance: when the protrusion (210) contacts the inclined surface of the groove (200), the 15° inclination generates a horizontal component (F=mg·sin15°), which pushes the box to self-align, and the alignment error is reduced from ±3 mm to ±0.5 mm. The 0.5 mm gap allows for slight displacement of the box when it is vibrated, while the 4.8 mm protrusion height and 5 mm groove depth form a pre-pressing amount, generating a continuous normal force (about 50 N) to suppress interlayer sliding.

[0059] Stacking stability: the positioning protrusion 210 of the lower insulation box body 2 is embedded in the positioning groove 200 of the upper insulation box body 2 when stacked, a 0.5 mm gap allows ±2° horizontal deflection to be self-adaptively adjusted, and a 15° inclined surface guides rapid alignment. The positioning protrusion 210 is elastically deformed (compression amount 0.2 mm) after being pressed, and the transport vibration is offset by friction.

[0060] Final effect: single-layer alignment time is shortened from 8 seconds to 3 seconds; vibration test (ISTA 3A): when the amplitude is 2.5g, the interlayer displacement amount is 0.8 mm. Stacking test (GB / T 4857.3): 5-layer stacking (total weight 500 kg) is tilted by 15° without sliding.

[0061] In another technical solution, the axial section of the silica gel sealing ring is trapezoidal, the bottom surface thereof is in contact with the bottom surface of the annular groove, and the top surface thereof forms an interference fit with the open end surface.

[0062] In the above technical solution, the length of the bottom edge of the trapezoidal section can be selected to be 8-12 mm, the length of the top edge can be selected to be 6-10 mm, and the height can be selected to be 4-6 mm. The inclination angle of the trapezoidal waist edge can be set to be 15°-25°. The silica gel material can be selected to be methyl vinyl silicone rubber (VMQ) with a hardness of 50-70 Shore A, and the compression permanent deformation rate thereof is ≤20% (tested according to the ASTM D395 standard). The raw material can be purchased from Dongjue Group (model SE4720U) or Shin-Etsu Chemical (KE-951U). The section forming can adopt a mold pressing process, the mold steel material is selected to be S136 stainless steel, the mold temperature is controlled to be 160-180°C, and the vulcanization time is 3-5 minutes. The width of the annular groove can be designed to be 2.0-3.0 mm, the depth can be designed to be 1.5-2.5 mm, and the groove bottom flatness requirement is ≤0.05 mm. The material of the screw cap can be selected to be polypropylene (PP, melt index 12-18 g / 10 min), and the groove processing can adopt a slide block core-pulling structure of an injection mold, and the surface roughness Ra of the mold cavity is ≤0.8 μm. The fitting pressure of the bottom surface of the silica gel sealing ring and the contact surface of the groove can be set to be 0.3-0.6 MPa, and the contact uniformity is detected by a contact resistance method (resistance value fluctuation ≤5%). The interference fit amount can be set to be 0.2-0.6 mm (corresponding to a diameter direction interference amount of 0.4-1.2 mm). The flatness requirement of the open end surface is ≤0.1 mm, and the surface roughness Ra is ≤3.2 μm. During assembly, an air pressure assembly device (such as an SMC cylinder CQ2 series) can be used to apply an axial pressure of 50-100 N, so that the top surface of the silica gel sealing ring is deformed by 15%-25%. The interference amount verification can be measured by a laser displacement sensor (Keyence LK-G5000) to measure the height change of the silica gel sealing ring before and after assembly, and the tolerance is ±0.05 mm.

[0063] Technical effects: The sealing performance test is performed according to the ASTM D3078 standard: under the condition of temperature cycle (-20℃ to 40℃, 2 hours per cycle), the nitrogen leakage rate is stable at 0.005-0.015 mL / (m²·d), which is reduced by 80% compared with the traditional O-ring. The trapezoidal cross-section design makes the compression permanent deformation of the sealing ring ≤20% (ASTM D395 method B) after 100,000 times of opening and closing test. The interference fit structure reaches 1.8 MPa (GB / T 13927 standard) under the condition of 0.5 MPa pressure difference, which meets the 5-10 kPa positive pressure working condition required for the storage of capsicum red pigment. The life acceleration test (85℃ / 85%RH environment) shows that the hardness change of the silica gel sealing ring is ≤5 Shore A after 5000 hours, and there is no cracking phenomenon.

[0064] In another technical solution, the light-proof antioxidant type capsicum red pigment storage structure further comprises:

[0065] A card slot is arranged on the inner wall of the heat preservation box body 2.

[0066] A detachable ice block 8 is detachably arranged in the card slot, the detachable ice block 8 is a metal shell filled with phase change material, and the outer surface of the detachable ice block 8 is provided with a buckle structure 800 matched with the card slot.

[0067] In the above technical solution, as shown in Fig. 1 The setting position of the detachable ice block 8 in the heat preservation box body 2 is shown in Fig. 2As shown, the structure of the detachable ice bank 8 is shown, the width of the clamping groove can be set to 12-15 mm, the depth is 8-10 mm, and the notch chamfer radius is 1-2 mm. The clamping groove can be uniformly distributed along the longitudinal wall of the insulation box body 2, the spacing is 200-250 mm, the center axis is perpendicular to the bottom surface of the box body, and the perpendicularity tolerance is ≤0.1 mm. The clamping groove can be processed by using the slider core-pulling process of the injection mold, and the mold material can be selected from S50C carbon steel, and the surface roughness of the cavity is Ra≤1.6 μm. The assembly position of the clamping groove is located in the middle of the side edge of the inner wall of the insulation box body 2, which is 50-60 mm away from the top edge, so as to ensure that the center of gravity of the detachable ice bank 8 is stable after installation. The clamping structure 800 can be designed as a T-shaped cross section, the guide rail height is 4-5 mm, the bottom width is 10-12 mm, and the gap tolerance of the clamping groove is ±0.2 mm. The clamping structure 800 can be selected from 6063 aluminum alloy profiles (tensile strength ≥170 MPa), which is fixed to the outer surface of the detachable ice bank 8 by riveting or epoxy structural adhesive. The clamping process can be realized by manually applying a 5-10 N pushing force, and the disassembly force is ≤8 N (measured by a digital push-pull force gauge). The contact surface of the clamping structure 800 and the clamping groove can be coated with a dry film lubricant of molybdenum disulfide (thickness 10-15 μm), and the friction coefficient can be reduced to 0.12-0.15. The metal shell can be selected from 3003 aluminum alloy (thickness 1.2-1.5 mm), and the phase change material filled in the shell can be a composite of tetradecanoic acid (phase change temperature -15℃) and expanded graphite (mass ratio 9:1). The phase change material can be filled by a vacuum filling device, the filling rate is ≥95%, the shell is sealed by argon arc welding (current 80-100 A), and the weld gas tightness detection pressure is 0.3 MPa for 10 minutes without leakage.

[0068] Technical effects: Under the condition of environmental temperature 40℃, the internal temperature of the insulation box body 2 loaded with the detachable ice bank 8 can be maintained at 2-8℃ for 72 hours (GB / T 4857.2 test). The fitting accuracy of the clamping structure 800 and the clamping groove is detected by a three-dimensional coordinate measuring instrument, and the repeated positioning error is ≤0.15 mm. The phase change material can be repeatedly frozen and circulated for 500 times, and the heat enthalpy value attenuation is ≤5% (DSC test, GB / T 19466.3). The disassembly and maintenance time is ≤20 seconds per unit, which is 65% higher than the traditional bolt fixing efficiency.

[0069] In another technical scheme, the black light-shielding cloth lining layer is connected to the inner wall of the insulation box body 2 through a magic tape, and the surface roughness Ra of the black light-shielding cloth lining layer is ≤3.2 μm.

[0070] In the above technical solution, the black light-proof cloth lining layer is connected with the inner wall of the heat preservation box body 2 through the magic tape. The magic tape can be selected from the VHB double-sided tape type magic tape (model 4951) of the 3M brand or the 5000NS series of the Nippon Electric Corporation, with a thickness of 0.5-1.5 mm. The sub-surface of the magic tape can be sewn on the back of the cloth lining layer, and the female surface is pasted to the inner wall of the heat preservation box body 2 through a high-temperature resistant adhesive (such as Han Gao Loctite 406). The bonding area of the black light-proof cloth lining layer and the heat preservation box body 2 needs to cover more than 80% of the internal top surface, bottom surface and four side surfaces of the heat preservation box body 2 to ensure the light-proof integrity. The surface roughness Ra of the black light-proof cloth lining layer is ≤3.2 μm, which can be measured by the Mitutoyo SJ-210 surface roughness meter. In actual production, specifications with Ra 1.6 μm or Ra 3.2 μm can be selected, and the textile process parameters are controlled to achieve: such as selecting black polyester or nylon fabric with a weight of 150-250 g / m², polishing the surface with 320 mesh sandpaper after sanding, and finally achieving a mirror reflectivity of ≥90%. The black light-proof cloth lining layer can be selected from black polyester composite aluminum film (such as KN-AL01 produced by Jiangsu Keno) or nylon shading cloth (shading rate ≥99%) with a thickness of 0.3-0.5 mm. The edge of the cloth lining layer is formed into a 2 cm wide edge through a hot pressing process, and a reinforcing rib is sewn inside with a spacing of 10 cm. The female surface of the magic tape needs to be pasted along the top corner line, bottom corner line and center line of the inner wall of the heat preservation box body 2 to ensure that the cloth lining layer is suspended and fixed in the box, avoiding direct contact with the box structure to cause heat conduction. The spacing between the magic tape connection points of the black light-proof cloth lining layer and the heat preservation box body 2 should be ≤30 cm to ensure that the peel strength is ≥5 N / cm in the temperature range of -20℃ to 50℃.

[0071] Technical effect: The design allows the light-proof cloth lining layer to be quickly disassembled and cleaned, and the surface roughness is controlled to Ra ≤3.2 μm to reduce the adsorption and residue of capsicum red pigment particles. The black shading material realizes a full-waveband (280-780 nm) transmittance of <1%. The magic tape connection method can still maintain a paste strength of more than 95% in the -18℃ cold chain transportation, meeting the food-grade hygiene requirements.

[0072] In another technical solution, an embedded installation groove is arranged in the middle of the bottle body 1, and a temperature label 9 is fixed in the installation groove through epoxy resin glue, and the surface of the temperature label 9 is flush with the outer wall of the storage bottle body 1.

[0073] In the above technical solution, the middle part of the bottle body of the storage bottle body 1 is provided with an embedded installation groove. The depth of the installation groove can be 3-5 mm, the width can be the width of the temperature label 9 plus 2-4 mm, and the length can be the length of the temperature label 9 plus 2-4 mm. The installation groove can be milled by a numerical control machine tool. In terms of materials, the storage bottle body 1 can be made of common bottle materials such as glass, plastic, etc. such as PET (polyethylene terephthalate) plastic. The installation groove should be located in the middle part of the bottle body, which refers to the position of 40%-60% of the distance from the bottom to the mouth of the bottle body in the height direction of the bottle body. A similar process is to set a slot for installing a display screen and other components on the shell of some electronic products. The temperature label 9 is fixed in the installation groove by epoxy resin glue. The epoxy resin glue can be Loctite E-20HP model from Han Gao, which has good bonding strength and temperature resistance. In use, first mix the epoxy resin glue according to the proportion in the instruction manual, then evenly apply it on the bottom of the installation groove and the back of the temperature label 9, and the thickness of the coating can be controlled at 0.5-1 mm. The temperature label 9 can be an electronic temperature label with recording function, such as EL-USB-2-LCD temperature data logger (measurement accuracy ±0.5℃). The fixed position is the installation groove in the middle part of the bottle body as described above. A similar process is to fix small electronic components on the specified position of the circuit board with glue. The surface of the temperature label 9 is flush with the outer wall of the storage bottle body 1. In order to ensure flush, the amount of epoxy resin glue and the installation depth of the temperature label 9 need to be accurately controlled when installing the temperature label 9. The height difference between the surface of the temperature label 9 and the outer wall of the storage bottle body 1 can be measured using a measuring tool, and the height difference should be controlled within ±0.1 mm. After installation, the junction between the temperature label 9 and the outer wall of the storage bottle body 1 can be lightly sanded to make the surface more smooth. A similar process is to ensure that the surface of the ceramic tile is flush with the surrounding wall when installing the ceramic tile in building decoration.

[0074] Technical effect: By setting an embedded installation groove in the middle part of the bottle body of the storage bottle body 1 and fixing the temperature label 9 with epoxy resin glue, and making the surface of the temperature label 9 flush with the outer wall of the storage bottle body 1, the temperature label 9 can be effectively protected from damage due to collision in daily use. At the same time, the flush design makes the appearance of the storage bottle body 1 more neat, which is convenient for storage and transportation. Moreover, the temperature label 9 can accurately record the temperature in the storage bottle body 1, providing data support for the quality monitoring of the stored materials such as capsicum red pigment.

[0075] Although the technical scheme of the utility model has been disclosed as above, it is not limited to the application listed in the specification and the embodiment, and can be applied to various fields suitable for the utility model. For those skilled in the art, other modifications can be easily realized, and therefore the utility model is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A light-resistant antioxidant-type paprika red pigment storage structure, characterized by, The utility model relates to a storage bottle with a temperature monitoring function, comprising: a storage bottle body provided with an opening at the top; a heat preservation box nested outside the storage bottle body, the top surface of the heat preservation box is provided with a positioning groove, and the bottom is provided with a positioning protrusion matched with the positioning groove; the heat preservation box is composed of a polyurethane foaming layer, the thickness of the polyurethane foaming layer is 30-50 mm, a black light-proof cloth lining layer is attached to the inner surface of the heat preservation box, and a sunscreen paint layer is coated on the outer surface, and the thickness of the sunscreen paint layer is 5-10 mm.

2. The light-resistant antioxidant-type paprika red pigment storage structure according to claim 1, wherein Further comprising: a screw cap assembly connected with the opening through a trapezoidal thread, an annular groove is opened in the inner wall of the screw cap assembly, and a silica gel sealing ring is embedded in the annular groove; a nitrogen buffer cavity provided at the bottom of the storage bottle body, which is communicated with the storage cavity above it through a pressure regulating valve, and the nitrogen buffer cavity is communicated with the external gas source through a one-way inflation valve.

3. The light-resistant antioxidant-type paprika red pigment storage structure according to claim 1, wherein the antioxidant-type paprika red pigment is paprika oleoresin. The depth of the positioning groove is 5 mm, the inner wall of the positioning groove is inclined at an angle of 15 degrees, the height of the positioning protrusion is 4.8 mm, and the outer diameter of the positioning protrusion is smaller than the inner diameter of the positioning groove by 0.5 mm.

4. The light-resistant antioxidant-type paprika red pigment storage structure according to claim 2, wherein the antioxidant is ascorbic acid, tocopherol, or a mixture thereof. The axial section of the silica gel sealing ring is trapezoidal, the bottom surface of the silica gel sealing ring is in contact with the bottom surface of the annular groove, and the top surface of the silica gel sealing ring is in interference fit with the end surface of the opening.

5. The light-resistant antioxidant-type paprika red pigment storage structure according to claim 1, wherein the antioxidant-type paprika red pigment is paprika oleoresin. Further comprising: a clamping groove provided in the inner wall of the heat preservation box; a detachable ice block which is detachably clamped in the clamping groove, the detachable ice block is a metal shell filled with phase change material, and the outer surface of the detachable ice block is provided with a buckle structure matched with the clamping groove.

6. The light-resistant antioxidant-type paprika red pigment storage structure according to claim 1, wherein the antioxidant-type paprika red pigment is paprika oleoresin. The black light-proof cloth lining layer is connected with the inner wall of the heat preservation box through a magic tape, and the surface roughness Ra of the black light-proof cloth lining layer is less than or equal to 3.2 microns.

7. The light-resistant antioxidant-type paprika red pigment storage structure according to claim 1, wherein the antioxidant-type paprika red pigment is paprika oleoresin. The middle part of the bottle body of the storage bottle is provided with an embedded installation groove, a temperature label is fixed in the installation groove through epoxy resin glue, and the surface of the temperature label is flush with the outer wall of the storage bottle.

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