A fresh-mixed beverage bottle cap

Abstract

This utility model discloses a fresh-mixed beverage bottle cap, comprising an upper cap, a middle cap, and a lower cap. The upper cap includes a top cap and an anti-theft ring connected below the top cap. The inner wall of the top cap has internal threads that mate with the middle cap. The anti-theft ring is fitted around the middle cap, with one part connected to the top cap via a point connection and the other part connected to the top cap via a pull strip. The two sides of the pull strip are respectively connected to the top cap and the anti-theft ring via point connections. The lower cap is inserted into the beverage bottle and screwed onto the bottle neck. The middle cap is inserted into the lower cap, and the upper cap is screwed onto the middle cap, sealing the top of the middle cap to form a cavity for storing honey. Through the cooperation of a guide post and a guide groove, the middle cap moves downward within the lower cap, puncturing the bottom of the lower cap, allowing the honey in the cavity to flow into the beverage bottle through the puncture. The upper, middle, and lower caps employ a multi-stage sealing system. Through a precision sealing structure, the pre-treated honey meets the colony count requirements, with a residual crystal nucleus content of ≤2%, preventing damage to the seal due to crystal expansion during storage.

Description

Technical Field

[0001] This utility model belongs to the field of beverage packaging and filling technology, specifically relating to a fresh-mixed beverage bottle cap. Background Technology

[0002] As a natural functional food, honey's core advantages stem from its multiple natural preservative properties: First, its chemical antibacterial mechanism, containing glucose oxidase (catalyzing the production of hydrogen peroxide from glucose, with a concentration of 50-100 ppm), low pH (3.2-4.5), and high osmotic pressure (water activity Aw≤0.6, high-concentration sugar solution of 60% or more), can inhibit more than 99% of common pathogenic bacteria; Second, its bioactive components, rich in amylase (≥8.3 DU), phenolic acids (such as caffeic acid and ferulic acid, with a total content of 50-200 μg / g), and trace elements, endow it with antioxidant and intestinal regulating functions.

[0003] However, when honey is diluted with water at the usual beverage ratio (1:4-1:10), the water activity of the system surges to 0.85-0.92, exceeding the microbial growth threshold (Aw ≥ 0.88 for yeast, Aw ≥ 0.80 for mold). Studies have shown that within 4 hours of dilution, the total bacterial count rapidly increases from <100 CFU / mL to 10 CFU / mL. The main contributing factors include: the attenuation of natural antibacterial factor concentrations (hydrogen peroxide concentration drops below 10 ppm after dilution, reducing antibacterial efficacy by 70%); and weakened low pH buffering capacity (pH fluctuates above 4.5 when fruit juice or other ingredients are added, significantly enhancing microbial metabolic activity). At room temperature, honey mixed with water can only be stored for 1-2 days. Diluting honey disrupts the osmotic pressure created by its high sugar concentration, weakening its antibacterial effect. Moreover, room temperature environments are conducive to the growth and reproduction of microorganisms. Bacteria, molds and other microorganisms carried in the water will grow rapidly in the honey water solution, causing the solution to deteriorate, develop off-flavors, fermentation and other phenomena. This is also the difficulty in preparing honey water beverages.

[0004] Freshly prepared honey drinks, stored separately from water, are prepared only when needed. This method solves the problem of honey spoilage and preserves the natural flavor of the honey. Their fresh taste and healthy quality are increasingly popular. However, because honey contains yeast, fermentation can occur in high summer temperatures, causing the honey to expand and potentially leak during storage.

[0005] In addition, honey has a unique property: it crystallizes when refrigerated or when the temperature drops in northern winters. Crystallized honey becomes viscous and has poor fluidity. If the cap of the bottle for storing honey is not large enough, water in the bottle will be blocked from entering the cap cavity and coming into contact with the honey, making it difficult for the honey to dissolve in water to form a beverage.

[0006] Therefore, honey beverages stored separately differ from regular separate beverages and have their own unique characteristics. Honey can ferment during high-temperature transportation, and without a strong seal, leakage is likely to occur during storage. If moisture enters the storage cavity, the honey will spoil within a short period. At the same time, it is also necessary to ensure that water and honey can be easily mixed before consumption, which places high demands on the design of the bottle cap and the beverage filling process.

[0007] Furthermore, according to the National Food Safety Standard (GB 14963-2011), there are clear regulations on key indicators for honey, including total bacterial count, coliform bacteria, mold, and yeast. The total bacterial count limit for honey must be ≤1000 CFU / g. Although honey's high osmotic pressure and acidic environment (pH 3.2-4.5) have natural antibacterial properties, improper hygiene control during production (such as contamination of the honey source or insufficient equipment cleaning) can still lead to excessive total bacterial count. The national standard for liquid honey beverages requires a total bacterial count not exceeding 100 CFU / mL. Therefore, ensuring that the bacterial count of the beverage after mixing honey and water meets the standard has become a challenge for the bottling and preservation of honey beverages. Summary of the Invention

[0008] To overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a fresh-mixed beverage bottle cap with good sealing effect, which meets the bacterial count requirements of honey water beverage through a precision sealing structure.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] A fresh-mixed beverage bottle cap, characterized in that it comprises an upper cap, a middle cap, and a lower cap;

[0011] The upper cover includes a top cover and an anti-theft ring connected below the top cover. The inner wall of the top cover is provided with an internal thread that mates with the middle cover. The anti-theft ring is fitted in the middle of the middle cover. One part of the anti-theft ring is connected to the top cover by a point, and the other part is connected to the top cover by a pull strip. The two sides of the pull strip are connected to the top cover and the anti-theft ring by points, respectively.

[0012] The middle cover is a through-type cylindrical structure formed by connecting an upper cylinder and a lower cylinder with different diameters. The upper cylinder has a larger diameter than the lower cylinder, and the lower cylinder has a straight cylindrical structure. The upper cylinder has an external thread near the top for connecting with the upper cover. Two guide posts are symmetrically arranged on the outside of the upper cylinder. The lower cylinder has a piercing part near the bottom for breaking the bottom of the lower cover. The piercing part adopts a symmetrical triangular prism structure, and there are openings between the piercing parts that communicate with the inside of the middle cover.

[0013] The lower cover is a cylindrical structure with an open top, consisting of an outer cylinder and an inner cylinder nested together. The top of the inner cylinder is connected to the outer cylinder, with a gap between them. The inner wall of the outer cylinder has threads for connecting to the beverage bottle. Two spiral guide grooves are symmetrically arranged on the upper side wall of the outer cylinder. When the middle cover is inserted into the lower cover, the two guide posts are located in the two guide grooves respectively. The bottom of the inner cylinder has an indentation for easy breaking. The indentation adopts a structure of two semicircles and a middle division, with a depth of 1 / 3 of the material thickness. A tearable limiting ring is connected to the top of the lower cover.

[0014] The lower cap is inserted into the beverage bottle and screwed onto the bottle opening. The middle cap is inserted into the lower cap, and the upper cap is screwed onto the middle cap to seal the top of the middle cap, forming a cavity for storing honey. The middle cap moves downward in the lower cap through the cooperation of the guide post and the guide groove. The piercing part punctures the bottom of the lower cap, and the honey in the cavity flows into the beverage bottle through the puncture.

[0015] Preferably, the other part of the anti-theft ring is connected to the top cover by two pull strips, and a limit block is provided at the lower part of the top cover between the connection points of the two pull strips. After the top cover is opened, the limit block prevents the top cover from falling down.

[0016] Preferably, a limiting protrusion is provided near the end of the guide groove, and the guide post is restricted in position by the limiting protrusion after moving along the guide groove to the end.

[0017] Preferably, the upper cylinder is provided with an upper retaining ring that limits the top of the limiting ring and a lower retaining ring that limits the top of the inner cylinder of the lower cover.

[0018] Preferably, the inner wall of the limiting ring is provided with an inclined sliding groove to facilitate the sliding of the two guide posts of the middle cover into the guide groove of the lower cover.

[0019] Preferably, the lower side of the limiting ring is connected to the lower cover point, the limiting ring has a tear-proof opening, and a handle is connected to the limiting ring near the tear-proof opening.

[0020] Preferably, the top inner part of the upper cover is provided with a sealing ring that fits into the top of the middle cover during assembly.

[0021] Preferably, the lower cylinder is provided with a sealing ring on its exterior for sealing with the lower cover.

[0022] Preferably, the outer side of the upper cylinder of the middle cover is provided with two sealing protrusions that seal with the limiting ring.

[0023] The present invention has the following beneficial effects:

[0024] The anti-theft ring is connected to the top cap via two pull strips (with a breaking strength of 8-12N). After opening the top cap and screwing it on, it is suspended on one side of the anti-theft ring via the pull strips, complying with the EU's "No Disposal of Bottle Caps" plastic reduction directive (EN 13432). Actual testing shows that the pull strip connection can withstand 10 opening and closing cycles without breaking, avoiding the plastic waste caused by traditional bottle cap separation and disposal, and reducing plastic consumption by approximately 0.5g per bottle cap.

[0025] The upper inner top is equipped with a sealing ring that fits into the top of the middle cover during assembly; the lower cylinder has a sealing ring on its exterior that seals against the lower cover; the middle cover's stepped cavity upper and lower cylinders are connected to form a through-type cylindrical structure, with the upper cylinder having a larger diameter than the lower cylinder, and the lower cylinder having a straight cylindrical structure. The upper cylinder of the middle cover has two sealing ridges on its exterior that seal against the limiting ring. A multi-stage sealing system is used between the upper, middle, and lower covers. Through precise sealing structure control, the pre-treated honey meets the colony count requirements, and the honey supersaturation is controlled within the range of 1.2-1.5, with a crystallization nucleus residue of ≤2% (compared to ≥5% in traditional structures), preventing damage to the seal due to crystallization expansion during storage. Actual measurements show that after 6 months of storage, the honey crystallization rate is ≤5%, while the crystallization rate using traditional methods is ≥20%.

[0026] When unopened, the sealing ring of the lower cylinder of the middle cap forms a liquid-tight seal with the inner cylinder of the lower cap (leakage rate ≤0.01mL / min), completely isolating the honey from the drinking water in the bottle and preventing microbial growth due to osmotic pressure imbalance before mixing. The honey storage chamber has a volume of 50±2mL, matching the 1:9 golden mixing ratio of common beverage bottles (400-500mL), ensuring the optimal antibacterial effect of the honey concentration when mixed.

[0027] The guide groove's end limiting protrusion forms a 90° mechanical barb. After the middle cover descends to its position, the guide post is engaged and locked, improving the feel of rotating the middle cover and preventing it from spinning back. Compared to traditional snap-fit ​​structures, this utility model's integrated guide groove and guide post slide design reduces independent parts, lowers mold complexity by 30%, and increases the injection molding pass rate to 98%.

[0028] The sealing ridge of the middle cover and the inclined groove of the limiting ring are co-molded in the mold, integrating multiple layers of sealing into one, reducing the independent assembly process of the sealing ring, and improving material utilization by 25%. The connection between the lower side of the limiting ring and the lower cover is easy to tear.

[0029] The top cap sealing ring has a compression rate of 20% and can withstand internal pressure fluctuations of ±0.2MPa (pressure differences caused by altitude changes during transportation), avoiding micro-leakage caused by pressure changes in traditional single sealing rings. The lower cylinder lip seal (45° lip edge) of the middle cap forms a dynamic seal when filled under 0.1MPa positive pressure, and actual tests show zero leakage during honey filling.

[0030] The piercing part of the middle cover adopts a symmetrical triangular prism design (30° tip), which works in conjunction with the annular indentation of the lower cover to achieve simultaneous piercing on both sides. The piercing diameter is ≥8mm and the edges are neat. The residual connection area of ​​the sealing piece (the broken part at the bottom of the inner cylinder) is ≥30%, which prevents the sealing piece from falling off and blocking the opening when shaken.

[0031] The 45° inclined groove on the inner wall of the limiting ring guides the guide post to automatically align with the guide groove, allowing a radial installation error of ±2mm. Combined with the axial limiting of the upper and lower retaining rings (tolerance ±0.5mm), this increases the assembly qualification rate of the middle cap from 85% in traditional structures to 99.2%. During filling, the coaxiality between the middle cap axis and the lower cap is ≤0.3mm, ensuring that the puncture part vertically punctures the indentation and avoids seal failure caused by tilting. Attached Figure Description

[0032] Figure 1a This is a schematic diagram of the overall structure of this utility model;

[0033] Figure 1b This is a cross-sectional view of the beverage bottle of this utility model;

[0034] Figure 1c This is a schematic diagram of the limiting ring in this utility model;

[0035] Figure 1d This is a schematic diagram of the bottle cap in the open state of this utility model;

[0036] Figure 2a This is a perspective view of the upper cover of this utility model;

[0037] Figure 2b This is a top view of the upper cover in this utility model;

[0038] Figure 2c This is a cross-sectional view of the upper cover in this utility model;

[0039] Figure 3a This is a perspective view of the middle cover in this utility model;

[0040] Figure 3b This is a front view of the middle cover in this utility model;

[0041] Figure 3c This is a cross-sectional view of the middle cover in this utility model;

[0042] Figure 4a This is a perspective view of the lower cover of this utility model;

[0043] Figure 4b This is a bottom view of the lower cover in this utility model;

[0044] Figure 4c for Figure 4a A magnified view of a section at point A in the middle;

[0045] Figure 5 The following is a flowchart of the filling process for the fresh-mixed beverage bottle cap of this utility model:

[0046] In the diagram: 1-Top cover, 2-Middle cover, 3-Lower cover, 4-Bottle mouth, 5-Limiting ring, 101-Top cover, 102-Anti-theft ring, 103-Limiting block, 104-Pull strip, 105-Sealing ring, 201-Upper retaining ring, 202-Lower retaining ring, 203-Sealing ridge, 204-Guide post, 205-Piercing part, 206-Opening, 301-Guide groove, 302-Beveled slide groove, 303-Break, 304-Handle, 305-Limiting ridge, 306-Indentation. Detailed Implementation

[0047] The present invention will be further described in detail below with reference to specific embodiments, but this is not intended to limit the present invention.

[0048] like Figures 1a-1d As shown, the present invention relates to a fresh-mixed beverage bottle cap, which includes an upper cap 1, a middle cap 2, and a lower cap 3.

[0049] like Figures 2a-2c As shown, the upper cover 1 includes a top cover 101 and an anti-theft ring 102 connected below the top cover 101. The inner wall of the top cover 101 is provided with an internal thread that mates with the middle cover 2. The anti-theft ring 102 is fitted in the middle of the middle cover. When the upper cover 1 moves up and down by rotating the thread, the anti-theft ring rotates on the middle cover. Part of the anti-theft ring 102 is connected to the top cover 101 by a point, and the other part is connected to the top cover 101 by a pull strip 104. The two sides of the pull strip 104 are respectively connected to the top cover 101 and the anti-theft ring 102 by points. When the upper cover 1 moves up, the connection point with the anti-theft ring is disconnected. At the same time, the pull strip is pulled so that the connection points between the two sides of the pull strip 104 and the top cover 101 and the anti-theft ring are disconnected. At this time, the top cover and the middle cover are separated, and the top cover is connected to the anti-theft ring by the pull strip. The top cover is suspended on one side of the anti-theft ring to prevent the top cover from being completely separated from the bottle cap. The pull bar 104 adopts a gradient reinforcing rib design, with the cross-sectional area near the top cover end being 30% larger than that of the anti-theft ring end, ensuring that the breakage sequence is controllable.

[0050] like Figure 2a and Figure 1d As shown, the gradient pull strip 104 adopts a cross-sectional area gradient design (the top cover end is 30% larger than the anti-theft ring end). Utilizing the stress concentration principle in materials mechanics, the pull strip breaks preferentially at a preset position (the anti-theft ring connection point), ensuring that when the top cover 101 is opened, only the point connection with the anti-theft ring 102 is broken, while the pull strip itself remains connected. This design avoids the problem of the top cover completely detaching after the traditional anti-theft ring breaks. The pull strip forms a flexible connection, allowing the top cover to be suspended with the anti-theft ring as a fulcrum, combining anti-theft functionality with ease of use.

[0051] In another optimized design, the other part of the anti-theft ring 102 is connected to the top cover 101 via two pull strips 104. A limiting block 103 is provided at the lower part of the top cover 101 between the connection points of the two pull strips 104. After the top cover 101 is opened, it is locked onto the anti-theft ring by the limiting block 103, preventing the top cover from flipping down and avoiding the top cover from shaking on one side of the bottle cap, which would affect the drinking experience. The limiting block 103 adopts a wedge-shaped boss structure, and its inclined surface forms a 15° self-locking angle with the upper edge of the anti-theft ring. When the top cover is folded at an angle exceeding 120°, the bottom surface of the limiting block forms a surface contact and locks with the anti-theft ring.

[0052] Two symmetrically distributed pull strips form a stable suspension fulcrum. Combined with a wedge-shaped limiting block (15° self-locking angle on the inclined surface), when the top cap is folded more than 120°, the bottom surface of the limiting block makes surface contact with the upper edge of the anti-theft ring for locking. This structure utilizes a mechanical self-locking principle to lock the top cap in a vertical position, preventing the top cap from sagging due to gravity and interfering with the bottle opening during drinking, thus improving the user experience.

[0053] like Figures 3a-3c As shown, the middle cover 2 is a through cylindrical structure formed by connecting an upper cylinder and a lower cylinder with different diameters. The upper cylinder has a larger diameter than the lower cylinder, and the lower cylinder has a straight cylindrical structure. The upper cylinder has an external thread near the top for connecting with the upper cover 1. Two guide posts 204 are symmetrically arranged at 180° on the outside of the upper cylinder. The lower cylinder 202 has a piercing part 205 near the bottom for breaking open the bottom of the lower cover 3. An opening 206 communicating with the inside of the middle cover is provided between the piercing parts 205.

[0054] like Figures 4a-4c As shown, the lower cover 3 is a cylindrical structure with an open top, consisting of an outer cylinder and an inner cylinder nested together. The top of the inner cylinder is connected to the outer cylinder, with a gap between them. The inner wall of the outer cylinder has threads for connection with the beverage bottle 4. Two spirally ascending guide grooves 301 are symmetrically located on the upper side wall of the outer cylinder. When the middle cover 2 is inserted into the lower cover 3, the two guide posts 204 are located in the two guide grooves 301 respectively. The clearance between the guide posts 204 and the guide grooves 301 is controlled within ±0.05mm to ensure smooth sliding. The guide grooves 301 adopt a variable pitch design (supplementary), with an initial pitch of 8mm / turn and a final pitch of 5mm / turn, achieving fast-then-slow feed control.

[0055] like Figure 4c As shown, a limiting protrusion 305 is provided near the end of the guide groove 301. After the guide post moves along the guide groove to the end, it is restricted in position by the limiting protrusion 305 to prevent the guide post from slipping and rising. The limiting protrusion 305 is provided with an acoustic tactile structure. When the guide post slides over it, it produces an 80dB "click" sound, providing clear operation feedback and improving the user experience when opening the bottle.

[0056] The upper cylinder integrates external threads that mate with the internal threads of the upper cover, along with symmetrical guide posts 204, an upper retaining ring 201, and a double-peak sealing ridge 203. The guide posts and the lower cover guide groove 301 have a ±0.05mm clearance fit to ensure the accuracy of the spiral movement; the double-peak sealing ridge and the inner wall of the limiting ring form a double-line seal, passing a 0.3MPa sealing pressure test to meet the leak-proof requirements under high-pressure transportation environments.

[0057] like Figure 4b As shown, the bottom of the inner cylinder has an indentation 306 for easy breaking. The indentation 306 has a structure of two semicircles separated in the middle, with a depth of 1 / 3 of the material thickness to ensure a neat breaking shape. After the middle cap moves down, the piercing part 205 faces the indentation and breaks the bottom of the lower cap. The opening 206 between the piercing parts 205 allows honey to flow quickly into the bottle. The top of the lower cap 3 is connected to a tearable limiting ring 5. The lower side of the limiting ring 5 is connected to the lower cap 3 at point 3. The limiting ring 5 has a tear-proof break 303. A handle 304 is connected to the limiting ring 5 near the break. By pulling the handle 304, the limiting ring 5 is broken from the break 303, and the lower side of the limiting ring 5 is disconnected from the lower cap 3 at point 3, thus removing the limitation of vertical displacement between the middle cap and the lower cap.

[0058] like Figure 4a As shown, the inner wall of the limiting ring 5 is provided with an inclined sliding groove 302 to facilitate the sliding of the two guide posts 204 of the middle cover 2 into the guide groove 301 of the lower cover 3. During the assembly process, the guide posts 204 of the middle cover can be easily slid into the guide groove through the inclined sliding groove, reducing the assembly alignment error requirements.

[0059] The lower cap 3 is inserted into the beverage bottle 4 and screwed onto the bottle opening. The middle cap 2 is inserted into the lower cap, and the upper cap 1 is screwed onto the middle cap, sealing the top of the middle cap 2 to form a cavity for storing honey. The middle cap moves downward within the lower cap through the cooperation of the guide post and guide groove. The piercing part 205 punctures the bottom of the lower cap 3, allowing the honey in the cavity to flow into the beverage bottle 4 through the puncture. The piercing part 205 has a triangular pyramidal structure, reducing the rupture pressure to below 2N.

[0060] like Figure 3c As shown, the upper cylinder is provided with an upper retaining ring 201 that limits the top of the limiting ring 5 and a lower retaining ring 202 that limits the top of the inner cylinder of the lower cover. Before the limiting ring 5 is removed, the upper retaining ring 201 is used to position the middle cover and the lower cover vertically. After the limiting ring 5 is removed, the lower retaining ring 202 falls on the top of the inner cylinder of the lower cover to position the middle cover and the lower cover vertically. In addition to the guide groove and guide post, multiple position limits are used to ensure the positional accuracy of the fit between the structures during assembly and use.

[0061] like Figure 2cAs shown, the top inner part of the upper cover 1 is provided with a sealing ring 105 that fits into the top of the middle cover 2 during assembly. The sealing ring 105 on the top inner part of the upper cover fits into the top of the middle cover, forming a static seal at the top to prevent gas leakage from the storage cavity; this achieves a reliable seal between the upper cover and the middle cover 2, preventing failure at the top of the cavity; a sealing ring is provided on the outside of the lower cylinder for sealing with the lower cover 3; two sealing ridges 203 are provided on the outside of the upper cylinder of the middle cover 2 for sealing with the limiting ring 5. The sealing ridges 203 have a double-peak structure, forming a double-line seal with the inner wall of the limiting ring, achieving a sealing pressure of 0.3 MPa.

[0062] like Figure 5 As shown, the filling method of the fresh-mixed beverage bottle cap of this utility model includes the following steps:

[0063] Step 1: Honey Processing (Sterilization, Defoaming, Removal of Crystallization Nuts)

[0064] Pretreatment to dissolve crystallization nuclei: Honey is placed in a stainless steel pretreatment tank equipped with a stirrer. The temperature inside the tank is controlled at 50±2℃, and the mixture is stirred at a speed of 60-80 r / min for 24 hours to fully dissolve the crystallization nuclei in the honey. The temperature is monitored in real time during the stirring process and maintained at a constant temperature through a jacketed water bath circulation system.

[0065] Vacuum degassing: Transfer the pretreated honey to a vacuum degassing machine, set the vacuum level to 0.08-0.09 MPa, maintain the temperature at 50±2℃, and process for 30-40 minutes to remove air bubbles from the honey. Use a scraper to stir during the degassing process to prevent the honey from sticking to the walls.

[0066] Pasteurization: The defoamed honey is fed into a plate sterilizer and sterilized at 65±1℃ for 30 minutes. During the sterilization process, the honey flow rate is controlled at 1-2m / s to ensure uniform sterilization.

[0067] Rapid cooling and sealing: After sterilization, the honey is rapidly cooled through a spiral plate heat exchanger at a rate of 5-10℃ / minute, bringing the temperature down to below 25℃. Then, in an ISO 5 cleanliness level aseptic environment, the honey is sealed in a temporary storage tank using aseptic filling equipment. The inner wall of the temporary storage tank is coated with food-grade polytetrafluoroethylene to prevent honey from adsorbing.

[0068] Step 2: Treatment of the top, middle, and bottom covers (dust removal and sterilization, ensuring a bacterial count of ≤50 CFU / piece).

[0069] Ultrasonic Cleaning: Place the top, middle, and bottom covers into an ultrasonic cleaner. The cleaning solution is deionized water at 50±2℃, with 0.5-1% (mass fraction) of food-grade neutral detergent added. The ultrasonic frequency is 40kHz, and the cleaning time is 5 minutes. During the cleaning process, a circulation pump is used to keep the cleaning solution flowing, improving the cleaning effect.

[0070] Compressed air drying: After cleaning, the lid enters the drying chamber via a conveyor belt and is dried with compressed air that has undergone three-stage filtration (filtration accuracy of 5μm, 1μm, and 0.3μm respectively). The compressed air pressure is 0.4-0.6MPa, and the drying time is 2-3 minutes to ensure that there is no residual moisture on the surface of the lid.

[0071] Ozone sterilization: After drying, place the lids into an ozone sterilization chamber. The ozone concentration should be controlled at 0.3-0.5 mg / L, the temperature at 20-25℃, and the sterilization time at 30-40 minutes. Maintain a slight positive pressure (5-10 Pa) inside the chamber during sterilization to prevent external contamination. After sterilization, immediately place the lids into a sterile packaging bag and seal it. Store in an environment with an ISO 7 cleanliness level for no more than 2 hours.

[0072] Step 3: Construction of honey storage chamber and honey filling (sterile environment, heat preservation conditions)

[0073] Cleanroom preparation: Start the cleanroom purification system 2 hours in advance, including three-stage filtration: pre-filter, medium-efficiency filter, and high-efficiency filter. At the same time, turn on the ultraviolet sterilization lamp (wavelength 254nm, irradiation intensity ≥100μW / cm²). 2 Sterilization is carried out. The temperature of the cleanroom is controlled at 20-25℃, the relative humidity is 40-60%, and the cleanliness level is ISO 5.

[0074] Honey preheating and sterilization: Transfer the honey from the temporary storage container to a jacketed, insulated storage tank. Maintain the temperature inside the tank at 45±2℃ using hot water circulation. Turn on the ultraviolet sterilization device inside the storage tank (irradiation time 10 minutes, ultraviolet intensity ≥80μW / cm²). 2 At the same time, the honey delivery pipeline is continuously sterilized by ultraviolet irradiation (the inner wall of the pipeline is smooth and the roughness Ra≤0.8μm).

[0075] Honey storage chamber assembly and filling: On a sterile operating table, the middle cover is nested inside the lower cover, and the middle and lower covers are sealed with a food-grade silicone sealing ring (sealing ring hardness 40-50 Shore A) to form the honey storage chamber. A piston-type quantitative filling machine is used for filling, with a filling accuracy of ±1%. During the filling process, the temperature of the honey storage chamber is maintained at 40-45℃ to prevent honey crystallization due to excessively low temperature. The filling machine needle is made of titanium alloy and is sterilized with 75% ethanol before each filling.

[0076] Step 4: Sealing and assembling the cover (filling with nitrogen and tightening the top cover)

[0077] Nitrogen filling: In a sterile environment, nitrogen with a purity of ≥99.9% is filled into the honey storage cavity filled with honey through a nitrogen filling device. The filling pressure is 0.1 - 0.2 MPa, and the filling time is 5 - 10 seconds, so that the oxygen concentration inside the cavity is ≤1%. A bacterial filter (pore size 0.22μm) is installed at the outlet of the nitrogen filling device to prevent microbial contamination.

[0078] Upper cover tightening: Use a servo capping machine to tighten the upper cover on the honey storage cavity. The capping torque is controlled at 5 - 8 N·m to ensure a tight threaded fit between the upper cover and the honey storage cavity (the thread profile is triangular and the pitch is 1.5 mm). After capping, the sealing performance is tested. Using the pressure decay method, the test pressure is 0.3 MPa, and the pressure holding time is 30 seconds. A pressure drop of ≤5 kPa is considered qualified.

[0079] The fifth step: Assembly of the cap and the bottle body (tightened on the bottle body filled with water)

[0080] Bottle body pretreatment: The bottle body is made of food-grade polypropylene (PP). Before filling, the inner wall is rinsed with high-pressure water (pressure 2 - 3 MPa) for 30 seconds, and then sterilized through an ultraviolet tunnel (irradiation time 10 seconds, ultraviolet intensity ≥150 μW / cm 2 ), and then filled with reverse osmosis-treated drinking water (conductivity ≤10 μS / cm). The filling volume error is ±2%.

[0081] Capping and sealing: Use a capping machine to tighten the assembled cap on the bottle body. The rotational speed of the capping machine is controlled at 100 - 150 r / min, and the capping pressure is 80 - 100 N to ensure complete meshing of the threads between the cap and the bottle body. After capping, an appearance inspection and a random inspection of the sealing performance are carried out. The random inspection ratio is 1%. Using the water bath method (water temperature 30 ± 2°C, pressure 0.5 MPa, pressure holding for 1 minute), no bubble overflow is considered qualified.

Claims

1. A fresh-mixed beverage bottle cap, characterized in that: It includes an upper cover (1), a middle cover (2), and a lower cover (3); The upper cover (1) includes a top cover (101) and an anti-theft ring (102) connected below the top cover (101). The inner wall of the top cover (101) is provided with an internal thread that mates with the middle cover (2). The anti-theft ring (102) is fitted in the middle of the middle cover. One part of the anti-theft ring (102) is connected to the top cover (101) by a point, and the other part is connected to the top cover (101) by a pull strip (104). The two sides of the pull strip (104) are connected to the top cover (101) and the anti-theft ring (102) by points, respectively. The middle cover (2) is a through cylindrical structure formed by connecting an upper cylinder and a lower cylinder with different diameters. The upper cylinder has a larger diameter than the lower cylinder. The lower cylinder is a straight cylinder structure. The upper cylinder has an external thread near the top for connecting with the upper cover (1). The upper cylinder has two guide posts (204) symmetrically arranged at 180° on the outside. The lower cylinder (202) has a piercing part (205) near the bottom for breaking the bottom of the lower cover (3). The piercing part (205) adopts a symmetrical triangular prism structure. The piercing parts (205) have an opening (206) between them that communicates with the inside of the middle cover. The lower cover (3) is a cylindrical structure with an open top, consisting of an outer cylinder and an inner cylinder nested together. The top of the inner cylinder is connected to the outer cylinder and there is a gap between them. The inner wall of the outer cylinder is provided with a thread for connecting to the beverage bottle (4). Two spirally rising guide grooves (301) are symmetrically provided on the upper side wall of the outer cylinder. When the middle cover (2) is inserted into the lower cover (3), the two guide posts (204) are located in the two guide grooves (301) respectively. The bottom of the inner cylinder is provided with an indentation (306) that is easy to break open. The indentation (306) adopts a structure of two semicircles and a middle split, and the depth is 1 / 3 of the material thickness. The top of the lower cover (3) is connected with a tearable limiting ring (5). The lower cover (3) is inserted into the beverage bottle (4) and screwed onto the bottle mouth. The middle cover (2) is inserted into the lower cover and the upper cover (1) is screwed onto the middle cover to seal the top of the middle cover (2) and form a cavity for storing honey. The middle cover moves downward in the lower cover through the cooperation of the guide post and the guide groove. The piercing part (205) punctures the bottom of the lower cover (3) and the honey in the cavity flows into the beverage bottle (4) through the puncture.

2. The fresh-mixed beverage bottle cap as described in claim 1, characterized in that: The other part of the anti-theft ring (102) is connected to the top cover (101) by two pull strips (104). A limit block (103) is set at the lower part of the top cover (101) between the connection points of the two pull strips (104). After the top cover (101) is opened, the limit block (103) prevents the top cover from flipping down.

3. The fresh-mixed beverage bottle cap as described in claim 1, characterized in that: A limiting protrusion (305) is provided near the end of the guide groove (301). After the guide post moves along the guide groove to the end, it is restricted in position by the limiting protrusion (305).

4. The fresh-mixed beverage bottle cap as described in claim 2 or 3, characterized in that: The upper cylinder is provided with an upper retaining ring (201) that limits the top of the limiting ring (5) and a lower retaining ring (202) that limits the top of the inner cylinder of the lower cover.

5. The fresh-mixed beverage bottle cap as described in claim 4, characterized in that: The inner wall of the limiting ring (5) is provided with an inclined sliding groove (302) to facilitate the two guide posts (204) of the middle cover (2) to slide into the guide groove (301) of the lower cover (3).

6. The fresh-mixed beverage bottle cap as described in claim 4, characterized in that: The lower side of the limiting ring (5) is connected to the lower cover (3). The limiting ring (5) has a tear-proof opening (303) and a handle (304) is connected to the limiting ring (5) near the tear-proof opening.

7. The fresh-mixed beverage bottle cap as described in claim 6, characterized in that: The top of the upper cover (1) is provided with a sealing ring (105) that fits into the top of the middle cover (2) during assembly.

8. The fresh-mixed beverage bottle cap as described in claim 6, characterized in that: The lower cylinder is provided with a sealing ring on its exterior for sealing with the lower cover (3).

9. The fresh-mixed beverage bottle cap as described in claim 6, characterized in that: The upper cylinder of the middle cover (2) is provided with two sealing protrusions (203) that seal with the limiting ring (5).

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