A combination can

Abstract

The application relates to a combination tank, comprising a tank body, a main containing bin arranged in the tank body, and an openable injection inlet arranged in the main containing bin; a bottom cover connected to one end of the tank body away from the injection inlet; a secondary containing bin arranged at one end of the tank body away from the injection inlet; and a containing unit arranged on the bottom cover, fixedly connected with the bottom cover, contained in the secondary containing bin, and used for containing powder. The secondary containing bin arranged at one end of the tank body away from the injection inlet and the detachable containing unit fixedly connected with the bottom cover realize independent storage and quick replacement of the powder, effectively avoid cross contamination of the liquid and the powder, and can flexibly mix the two according to requirements during use, so as to meet the mixing requirements of different tastes and different dosages. The bottom cover and the containing unit are fixed, so that displacement is avoided under working conditions such as transportation, vibration, inversion or jolt, misrelease and blockage are avoided, the powder is not damp or leaked, and the convenience and safety of the user in loading and unloading the containing unit are improved.

Description

Technical Field

[0001] This application relates to the field of food packaging, and more particularly to a combination can. Background Technology

[0002] Most common cold-brew tea and powdered beverage containers on the market use a pre-filled cap with powder that is released through a piercing or ruptured membrane structure. While this "piercing membrane" design allows the powder to be poured into the main compartment when the cap is opened, it has the following drawbacks:

[0003] Poor sealing and moisture-proof properties, relying solely on simple pressing or bonding during assembly, often fail to completely prevent moisture from back-permeating the main compartment. Once moisture enters the powder compartment, the powder becomes damp and clumps, affecting dissolution and shortening the product's shelf life.

[0004] The traditional membrane-based dispensing method is inconvenient for powder collection and proportioning. It can only release all the powder at once, making it impossible to accurately control the dosage per use. Furthermore, it cannot flexibly adjust the dosage in different drinking scenarios. After the operation, the powder container often becomes loose, which is not conducive to secondary use or multiple preparations.

[0005] Powder compartments are prone to scattering and contamination. Powder is freely piled up in the bottom cover or bottle cap compartment. Users need to completely open the entire compartment each time they use it. Powder is easy to spill and is also easily contaminated by dust or impurities in the air during the opening process. Utility Model Content

[0006] The purpose of this application is to overcome the problems mentioned above, such as poor sealing and moisture protection of powder, inconvenience in powder handling and proportioning, and easy scattering and contamination of powder storage.

[0007] According to one aspect of this application, a combination tank is provided, comprising:

[0008] The tank body has a main receiving chamber inside, and the main receiving chamber has an openable injection port;

[0009] A bottom cover is attached to the end of the tank body opposite to the injection port;

[0010] A secondary containment chamber is provided at the end of the tank opposite to the injection port;

[0011] The bottom cover is provided with a receiving unit, which is fixedly connected to the bottom cover and is housed in the secondary receiving compartment for containing powder.

[0012] Preferably, the receiving unit is integrally formed with the bottom cover by injection molding or a snap-fit ​​structure.

[0013] Preferably, the containing unit includes a containing cavity and an open end, the open end being disposed toward the main containing chamber, and a sealing film or tear strip being provided at the opening for sealing the powder.

[0014] Preferably, the sealing film is made of aluminum foil composite film or puncture-resistant material, and is broken by pressing or rotating during use to release the powder into the main receiving compartment.

[0015] Preferably, an annular limiting rib or guide groove is provided between the inner wall of the secondary storage compartment and the outer wall of the storage unit to prevent the storage unit from shaking during use.

[0016] Preferably, the injection port is provided with a sealing cap, which is connected to the tank body by a threaded connection, a snap-fit ​​connection, or a flip-top structure.

[0017] Preferably, an anti-opening identification structure is provided between the bottom cover and the tank body, including: a fracture ring disposed on the outer edge of the bottom cover, the fracture ring breaking during the initial opening process and being irreparable, serving as an opening warning indicator; or,

[0018] A color-changing recognition layer, which undergoes an irreversible color change upon exposure to air or after being torn, is used to indicate the open state; or...

[0019] Microporous sealing tape leaves a visible marking layer after removal.

[0020] Preferably, the tank body has a columnar, elliptical columnar, or polygonal columnar structure.

[0021] Preferably, the can body is provided with a detachable portable hanging ring or buckle structure on the outside.

[0022] Preferably, a sealing ring or sealing gasket is provided between the bottom cover and the tank body.

[0023] This application offers the following advantages: By setting a secondary containment compartment and a detachable containment unit fixedly connected to the bottom cover at the end of the can body away from the injection port, independent storage and rapid replacement of the powder are achieved. The isolation design between the main and secondary containment compartments effectively avoids cross-contamination between the liquid and powder, while allowing for flexible mixing as needed to meet different flavor and dosage requirements. The fixed bottom cover and containment unit ensure that they are not easily displaced during transportation, vibration, inversion, or bumps, preventing accidental release and blockage. The powder will not become damp or leak, and the convenience and safety of loading and unloading the containment unit are also improved. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the appearance of the combined tank according to one embodiment of this application;

[0026] Figure 2 This is an exploded view of the combined tank according to one embodiment of this application;

[0027] Figure 3 This is a schematic diagram of the external appearance of the tank according to one embodiment of this application;

[0028] Figure 4 for Figure 3 Cross-sectional view at point AA;

[0029] Figure 5 This is a schematic diagram of the appearance of the bottom cover according to one embodiment of this application.

[0030] Explanation of reference numerals: 100, combined tank; 10, sealing cover; 20, tank body; 21, secondary containment chamber; 22, inlet; 23, main containment chamber; 30, bottom cover; 31, containment unit; 32, containment cavity. Detailed Implementation

[0031] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0033] Please refer to Figure 1 - Figure 5One embodiment of this application provides a combined container 100, including: a container body 20, a main receiving chamber 23 inside the container body 20, the main receiving chamber 23 having an openable injection port 22; a bottom cover 30 connected to one end of the container body 20 away from the injection port 22; a secondary receiving chamber 21 provided at one end of the container body 20 away from the injection port 22; and a receiving unit 31 provided on the bottom cover 30, the receiving unit 31 being fixedly connected to the bottom cover 30 and received within the secondary receiving chamber 21 for receiving powder.

[0034] In this embodiment, it should be noted that by setting the main storage compartment 23 and the secondary storage compartment 21 completely independently, the separate storage of liquids or granules and powders is successfully achieved. The main compartment is equipped with an openable inlet 22, which makes it convenient for users to fill soup, beverages, sauces, etc. in one go or in batches; while the detachable storage unit 31 in the secondary compartment is specifically responsible for storing powders (such as seasonings, powdered sugar, spices, etc.). The two do not interfere with each other and can be mixed as needed when used, which not only improves the freshness of food but also effectively avoids cross-contamination.

[0035] The container unit 31 and the bottom cover 30 are tightly connected via threaded locking, snap-fit, or sealing rings to ensure that the powder will not leak or become damp during transportation, vibration, or inversion. Meanwhile, the entire combination container 100 is made of food-grade materials that meet FDA and EU standards; it is non-toxic, odorless, and corrosion-resistant, and can be repeatedly washed and reused, balancing hygiene and durability. The transparent or labeled design of the container unit 31 makes remaining powder easily visible, further enhancing the user experience.

[0036] The technical solution of this embodiment achieves independent storage and rapid replacement of powder by setting a secondary containment chamber 21 at the end of the tank 20 away from the injection port 22 and a detachable containment unit 31 fixedly connected to the bottom cover 30. The isolation design of the main containment chamber 23 and the secondary containment chamber 21 effectively avoids cross-contamination between liquid and powder, and allows for flexible mixing as needed to meet the needs of different flavors and dosages. The bottom cover 30 and the containment unit 31 are fixed to ensure that they are not easily displaced during transportation, vibration, inversion, or bumps, avoiding accidental release and blockage. The powder will not get damp or leak, and the convenience and safety of loading and unloading the containment unit 31 are also improved.

[0037] Optionally, the receiving unit 31 is integrated with the bottom cover 30 via injection molding or a snap-fit ​​structure. In this embodiment, the receiving unit 31 is optionally integrated with the bottom cover 30 via injection molding or a snap-fit ​​structure, thereby eliminating additional assembly steps and improving production efficiency and structural strength. The integrated structure makes the sealing connection between the receiving unit 31 and the bottom cover 30 more reliable, eliminating the need for additional sealing rings or latches, further reducing the risk of leakage. Through the injection molding process, the receiving unit 31 and the bottom cover 30 can be molded from the same food-grade material in one piece, ensuring material consistency and a tight fit of the contact surfaces; the snap-fit ​​structure provides a controllable elastic fit, allowing the receiving unit 31 to be disassembled when needed, balancing sealing performance and maintainability. This integrated design not only simplifies the mold and assembly process but also enhances the durability and sealing performance of the combined tank 100 under extreme conditions such as vibration and drops.

[0038] Optionally, the receiving unit 31 includes a receiving cavity 32 and an open end, with the open end facing the main receiving compartment 23. A sealing film or tear strip is provided at the opening for sealing the powder. In this embodiment, the receiving unit 31 within the secondary receiving compartment 21 consists of a receiving cavity 32 and an open end facing the main receiving compartment 23. A sealing film or tear strip is provided at the open end for sealing the powder during transportation and storage. This sealing film / tear strip not only effectively blocks moisture and air, preventing the powder from becoming damp or oxidized, but also allows for instantaneous release of the powder by tearing or peeling the sealing film upon initial use, ensuring thorough mixing with the liquid or particles in the main compartment. The sealing film material can be food-grade aluminum foil composite film or multi-layer co-extruded plastic film, combining barrier properties with easy-tear properties. The tear strip can be designed with a pre-fracture structure, ensuring that the user can tear it open with only a small amount of force, avoiding splashing or contamination of the contents. This design ensures the safety of the powder seal while also improving the ease of opening and user experience.

[0039] Optionally, the sealing film is made of aluminum foil composite film or puncture-resistant material. During use, the film is broken by pressing or rotating, releasing the powder into the main receiving compartment 23. In this embodiment, the sealing film is made of aluminum foil composite film or food-grade puncture-resistant material to balance excellent gas barrier properties with ease of opening. The sealing film adheres tightly to the opening of the receiving unit 31, effectively isolating moisture, oxygen, and microorganisms during transportation and storage, ensuring the powder's dryness and freshness. During use, the user can apply directional force to the sealing film using the pressing protrusion or rotating mechanism on the bottom cover 30, causing the film to break or puncture at a predetermined position, instantly releasing the powder into the main receiving compartment 23 for thorough mixing with liquids or particles, without the need for additional tools. This breaking method ensures both ease and safety in opening the package, while avoiding the risk of film fragments falling into the food, thus improving the overall user experience and food hygiene.

[0040] Optionally, an annular limiting rib or guide groove is provided between the inner wall of the secondary receiving compartment 21 and the outer wall of the receiving unit 31 to prevent the receiving unit 31 from shaking during use. In this embodiment, the annular limiting rib or guide groove added between the inner wall of the secondary receiving compartment 21 and the outer wall of the receiving unit 31 can achieve precise positioning during installation, ensuring that the receiving unit 31 is firmly in place without shaking. These limiting ribs can be designed as multiple equally spaced convex rings or an integrated spiral guide groove, which can provide radial support for the receiving unit 31 and restrict its displacement axially. With this structure, the powder receiving unit 31 can remain stable during vibration, tilting, or transportation of the combined tank 100, avoiding fatigue, loosening, or leakage of the seals due to shaking. At the same time, the guide groove design facilitates the insertion or rotation locking of the receiving unit 31 in a specific direction, improving assembly efficiency and ensuring a clear removal path for the user during disassembly. This structure requires no additional parts and can achieve stable positioning and guiding functions by molding in one step or simultaneously molding the bottom cover during injection molding. This simplifies the component structure and reduces manufacturing costs.

[0041] In one specific embodiment, the inlet 22 is equipped with a sealing cap 10, which is connected to the tank body 20 via a threaded connection, a snap-fit ​​connection, or a flip-top structure. In this embodiment, it should be noted that the inlet 22 of the main receiving compartment 23 is equipped with a repeatedly openable and closable sealing cap 10, which can be connected via a threaded connection, a snap-fit ​​connection, or a flip-top structure. When closed, the sealing cap 10 fits tightly against the edge of the inlet 22, and, in conjunction with a food-grade sealing ring or silicone gasket, effectively blocks external air and moisture, preventing leakage and deterioration of liquid or particulate matter within the main compartment. When open, the user only needs to loosen, unfasten, or lift the cap to quickly access the contents of the main compartment, making operation simple. The threaded connection structure provides high sealing reliability and is suitable for high-vibration or high-pressure environments; the snap-fit ​​connection structure balances sealing performance with quick opening and closing, suitable for frequent use scenarios; the flip-top structure, through an integrated hinge design, allows for one-handed opening, improving the user experience.

[0042] In one specific embodiment, an anti-opening identification structure is provided between the bottom cover 30 and the tank body 20, including: a fragile ring disposed on the outer edge of the bottom cover 30, which breaks during the initial opening process and cannot be restored, serving as an opening indication mark; or, a color-changing identification layer, which undergoes an irreversible color change after being exposed to air or torn by force, used to indicate the opening status; or, a microporous sealing sticker, which leaves a visible identification layer after being removed.

[0043] In this embodiment, it should be noted that the anti-opening identification structure not only improves the security of the packaging but also provides users and regulators with an intuitive indication of when the lid has been opened. The fragile breakage ring is located on the outer edge of the bottom cover 30—upon first opening, the breakage ring breaks and separates along a predetermined weak line and cannot be reset, thus producing a clear mechanical "click" sound and visible fracture marks, indicating to the user or inspector that the packaging has been opened once.

[0044] The color-changing identification layer can be applied to the inside of the fracture ring or the mating surface of the bottom cover 30 and the tank body 20. When the sealing structure is exposed to air due to tearing or stress, the chemical components of the identification layer react rapidly with oxygen or moisture, resulting in an irreversible color change (e.g., from the original pale yellow to dark red), clearly indicating the "open" status. Because the color-changing process is irreversible, even if the fragments of the fracture ring are artificially glued together, the original color cannot be restored, thus preventing secondary camouflage.

[0045] The microporous sealing tape consists of a thin film with a microporous structure applied to the contact surface between the bottom cover 30 and the can body 20. When removed, it leaves irregular damaged edges and a visible contrasting background layer (such as the word "VOID" in black on a white background), clearly indicating that it has been opened. This film has sufficient adhesion at room temperature to ensure safe transport, but when attempting to re-apply it, its microporous structure causes a permanent degradation in the adhesive layer's performance, preventing resealing.

[0046] With the above three optional structures, any of the options can provide reliable anti-counterfeiting prompts for the combination can 100, which not only makes it easy for consumers to have a good experience when opening it for the first time, but also facilitates supervision and inspection, ensuring the integrity and safety of food packaging during the circulation process.

[0047] In one specific embodiment, the can body 20 is a cylindrical, elliptical cylindrical, or polygonal prism structure. It should be noted that the cylindrical, elliptical cylindrical, or polygonal prism structure of the can body 20 not only affects the appearance but also plays a significant role in storage performance, grip feel, and stacking stability. The cylindrical can body 20 has a symmetrical and stable structure, suitable for mass production and automated filling, and provides uniform force distribution when rotating the sealing cap 10. The elliptical cylindrical can body 20 maintains a large volume while optimizing the grip feel through flattened sides, facilitating one-handed operation and carrying. The polygonal prism can body 20 enhances anti-rolling performance through its angular design, preventing accidental slippage during transportation or on tables, while the angular faces provide more flat surfaces for labeling or brand display. All three structures can utilize the same secondary storage compartment 21 and bottom cover 30 design; only the outer mold contour needs adjustment to achieve diverse shapes, meeting the functional and aesthetic requirements of different scenarios.

[0048] Optionally, the canister 20 is equipped with a detachable portable hanging loop or buckle structure on its exterior. In this embodiment, it should be noted that the detachable portable hanging loop or buckle structure on the exterior of the canister 20 provides great convenience for users when going out, traveling, or engaging in outdoor activities. The hanging loop can be made of food-grade stainless steel or engineering plastic and is securely connected to the side wall of the canister 20 via a buckle or hinge. It can be hung on a backpack, belt, or handlebars and can be quickly removed when not in use, without adding extra burden. The buckle structure is integrated into the shoulder or bottom of the canister 20 and uses a flexible clip design to securely hold it on a bag strap, table edge, or storage rack, ensuring that the canister 20 does not easily slip during movement. When not in use, the portable hanging loop / buckle can be folded to fit the contour of the canister 20 without affecting the overall aesthetics; when needed, it can be quickly attached with a single click. Whether for organizing and tidying up the home kitchen, or for outdoor picnics, hiking, and cycling, this detachable and portable design significantly enhances the practicality and flexibility of the Combination Jar 100.

[0049] Optionally, a sealing ring or gasket is provided between the bottom cover 30 and the can body 20. In this embodiment, it should be noted that the sealing ring or gasket between the bottom cover 30 and the can body 20 aims to further enhance the sealing performance of the container, ensuring the safety and freshness of the stored contents. The sealing ring or gasket is typically made of food-grade silicone, rubber, or other high-temperature and corrosion-resistant materials, possessing high elasticity and durability. By precisely matching the contact surfaces of the bottom cover 30 and the can body 20, the sealing ring effectively prevents air, moisture, or other external contaminants from entering the can body 20, avoiding food spoilage or moisture absorption. Furthermore, the sealing ring forms a tight sealing layer upon initial closure, preventing leakage of liquids, particles, or powders, ensuring the integrity of the packaging.

[0050] This sealing design is suitable for foods requiring long-term storage, especially powdered substances such as powders and seasonings that are susceptible to moisture or oxidation, effectively extending their shelf life. During use, the sealing ring or gasket is easy to clean and replace, ensuring sealing performance during repeated use and preventing sealing problems caused by damage or wear. Depending on the specific application, the sealing ring can also be customized according to the size and shape of the container 20 to ensure maximum sealing effect and meet different storage needs.

[0051] In an alternative embodiment, the opening of the receiving unit 31 can be designed with a metering outlet, which, in conjunction with a micro-rotating cap or a toggle mechanism, can automatically control the amount of powder dispensed each time the user takes powder as needed. To prevent liquid or powder from overflowing when not in use, the outlet of the receiving unit 31 can be designed with a sealing device.

[0052] In this embodiment, it should be noted that the opening end of the receiving unit 31 is designed with a quantitative discharge port. Combined with the control structure of a micro-rotating cap or a toggle mechanism, the amount of powder dispensed each time can be automatically controlled according to user needs. The inner diameter and shape of the discharge port are designed to meet certain flow standards. The design of the discharge port not only ensures the smooth flow of material but also controls the amount of powder dispensed each time through precise structural design. Alternatively, the discharge port is equipped with a micro-rotating cap. The rotating cap controls the size of the opening through rotation, thereby precisely adjusting the amount of powder dispensed each time. The structure of the rotating cap can be finely adjusted to adjust the opening of the discharge port, ensuring that the amount of powder dispensed each time is stable and controllable. The rotating cap is made of leak-proof material to ensure that no unnecessary overflow occurs during dispensing. Another optional design is to control the opening and closing of the quantitative discharge port through a toggle mechanism. The toggle mechanism consists of a small toggle and an elastic element. The user releases the required amount of powder by gently toggling the toggle. The elastic element in the toggle mechanism ensures that the amount of powder released each time is the same, thereby achieving precise dispensing.

[0053] To prevent powder or liquid from spilling when not in use, the discharge port of the receiving unit 31 is equipped with a sealing device. The sealing device can be spring-loaded or magnetic, and prevents material leakage by automatically closing or closing the discharge port as needed. The sealing device, through its special design, works in conjunction with the discharge port to ensure that the discharge port remains sealed when not in use.

[0054] Elastic sealing strip: The sealing device includes an elastic sealing strip or sealing membrane that fits tightly against the edge of the discharge port, isolating it from the material inside the receiving unit 31. The sealing strip is designed to ensure that powder spillage is effectively prevented from occurring even under varying temperatures or pressures.

[0055] Magnetic Sealing Mechanism: In another implementation, the sealing device employs a magnetic mechanism. The magnetic door engages with the discharge port, automatically sealing it through magnetic force to prevent material leakage. When the user needs to collect powder, the magnetic door can be easily opened to complete the discharge. This magnetic mechanism boasts highly efficient sealing performance and maintains its sealing effect even under frequent use.

[0056] The technical solution implemented in this embodiment combines a quantitative dispensing port, a micro-rotating cap, or a control structure with an actuating mechanism to ensure precise powder dispensing and effectively prevent leakage. Through the design of the sealing device, the receiving unit 31 can achieve a perfect seal when not in use, preventing liquid or powder spillage. Furthermore, the different sealing schemes provided in this embodiment (elastic sealing strip and magnetic sealing mechanism) can be selected according to user needs and specific applications to achieve the optimal implementation. The combined design of the micro-rotating cap, actuating mechanism, and quantitative dispensing port ensures precise powder dispensing each time it is used, avoiding over- or under-dispensing and meeting user needs. The design of the sealing device (elastic sealing strip or magnetic sealing mechanism) effectively prevents powder or liquid leakage when not in use. Whether through the tight fit of the elastic sealing strip or the efficient sealing of the magnetic mechanism, the sealing and safety of the receiving unit 31 in the non-use state are ensured.

[0057] The embodiments described above are merely examples of several implementations of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the scope of protection of this application.

Claims

1. A combination tank, characterized in that, include: The tank body has a main receiving chamber inside, and the main receiving chamber has an openable injection port; A bottom cover is attached to the end of the tank body opposite to the injection port; A secondary containment chamber is provided at the end of the tank opposite to the injection port; The bottom cover is provided with a receiving unit, which is fixedly connected to the bottom cover and is housed in the secondary receiving compartment for containing powder.

2. The combined tank according to claim 1, characterized in that, The receiving unit is integrated with the bottom cover through injection molding or a snap-fit ​​structure.

3. The combined tank according to claim 2, characterized in that, The containing unit includes a containing cavity and an open end, the open end being positioned toward the main containing chamber, and a sealing film or tear strip being provided at the opening for sealing the powder.

4. The combined tank according to claim 3, characterized in that, The sealing film is made of aluminum foil composite film or puncture-resistant material. During use, the sealing film is broken by pressing or rotating, thereby releasing the powder into the main receiving compartment.

5. The combined tank according to claim 4, characterized in that, An annular limiting rib or guide groove is provided between the inner wall of the secondary storage compartment and the outer wall of the storage unit to prevent the storage unit from shaking during use.

6. The combined tank according to claim 1, characterized in that, The injection port is equipped with a sealing cap, which is connected to the tank body by a threaded connection, a snap-fit ​​connection, or a flip-top structure.

7. The combined tank according to claim 1, characterized in that, An anti-opening identification structure is provided between the bottom cover and the tank body, including: a fracture ring disposed on the outer edge of the bottom cover, the fracture ring breaking during the initial opening process and being irreparable, serving as an opening warning indicator; or... A color-changing recognition layer, which undergoes an irreversible color change upon exposure to air or after being torn, is used to indicate the open state; or... Microporous sealing tape leaves a visible marking layer after removal.

8. The combined tank according to claim 1, characterized in that, The tank body has an elliptical cylindrical or polygonal prism structure.

9. The combined tank according to claim 1, characterized in that, The tank body is equipped with a detachable portable hanging ring or buckle structure on the outside.

10. The combined tank according to claim 1, characterized in that, A sealing ring or sealing gasket is provided between the bottom cover and the tank body.

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