Catering packaging structure capable of achieving leakage prevention and exhaust

Abstract

The invention belongs to the technical field of catering packaging, and particularly relates to a leakproof exhaust catering packaging structure which comprises a shell body, an inner container is arranged in the shell body, a sealing cover is arranged at the top end of the shell body, a lower edge sleeve is arranged at the lower end of the sealing cover, and an upper convex box is arranged at the upper end of the sealing cover. And an air adjusting cavity is formed in the upper convex box. The detachable inner container is installed in the shell body, the sealing cover capable of exhausting air is installed at the top end of the inner container, and the first threaded exhaust channel is installed at the bottom of the sealing cover and combined with the transverse channel, so that the steam exhaust path is effectively prolonged, and the situation that liquid is sprayed out along with airflow is reduced; steam in the inner container is exhausted into the air adjusting cavity in the sealing cover through the multiple sets of first exhaust channels, the position of the blocking plate can be adjusted by rotating the exhaust flow adjusting knob according to the air pressure, and the corresponding number of exhaust holes are unlocked for exhausting.

Description

Technical Field

[0001] This invention relates to the field of food packaging technology, and in particular to a food packaging structure that achieves leak-proof and venting protection. Background Technology

[0002] In today's society, the catering industry is booming, the types of catering are becoming increasingly diverse, and takeaway and delivery services are becoming more and more popular. This has led to a continuous increase in the demand for catering packaging and increasingly higher requirements for its performance. Catering packaging often involves liquid foods, such as hot soup, hot porridge, and dishes with broth. When these foods are packaged, they will generate a lot of steam due to the high temperature. If the packaging cannot release this steam in time, the steam will accumulate inside the packaging container, which will increase the pressure inside the container, thereby deforming the packaging and even causing the packaging to break and the food to leak.

[0003] Most commercially available food packaging uses simple vents on the top of the container to release steam. However, in actual transportation scenarios, whether it's bumpy road transport or the shaking caused by delivery riders moving quickly, the soup inside the container will shake violently due to inertia, making it easy for the liquid to leak from the vents. The leaked liquid will not only soil the surface of the container but also contaminate other packages and may even seep into the outer packaging, resulting in a very poor dining experience for consumers. To address this issue, we propose a leak-proof and venting food packaging structure to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a food packaging structure that prevents leakage and venting, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a catering packaging structure for leak-proof ventilation, comprising an outer shell body, an inner container disposed within the outer shell body, a sealing cap at the top of the outer shell body, a lower edge sleeve at the lower end of the sealing cap, an upper convex box at the upper end of the sealing cap, an air regulating chamber within the upper convex box, an exhaust flow regulating knob rotatably connected to the middle of the upper convex box, a sealing plate installed at the bottom end of the exhaust flow regulating knob, multiple sets of exhaust holes at the side end of the sealing cap, the sealing plate located below the exhaust holes, a base at the bottom center of the air regulating chamber, multiple sets of exhaust channels equally spaced inside the base, a leak-proof component disposed within the base, a connecting component at the lower end of the lower edge sleeve, and an air pressure indicator component at the bottom of the outer shell body.

[0006] As an improved technical solution, multiple sets of exhaust channels are distributed at equal intervals along the axis of the base. Each exhaust channel has an overall threaded design, and a transverse channel is provided at the top of the exhaust channel. The ends of the transverse channels all face the inner wall of the base.

[0007] As an improved technical solution, the leak-proof component includes guide rods fixed on both sides inside the base, and sealing plates are provided on the outside of the two sets of guide rods. Multiple sets of water-permeable holes are opened in the middle of the sealing plates, and moisture-absorbing and expanding cotton is glued to the lower end of the sealing plates.

[0008] As an improved technical solution, the air pressure indicator component includes through holes evenly distributed on the upper part of the outer shell body, multiple sets of elastic air pressure indicator columns evenly installed on the lower part of the outer shell body, and multiple sets of exhaust channels evenly opened on the lower outer edge of the air regulating chamber.

[0009] As an improved technical solution, a sealing strip is installed on the top of the outer shell body, and a groove matching the sealing strip is opened at the bottom of the outer edge of the inner liner container.

[0010] As an improved technical solution, multiple sets of bottom support plates are cast at equal intervals on the bottom of the inner wall of the outer shell, multiple sets of side frame plates are installed at equal intervals on the inner wall of the outer shell, a positioning sleeve is installed at the center of the inner wall of the outer shell, and a positioning post is installed at the center of the bottom of the inner liner container.

[0011] As an improved technical solution, the connecting assembly includes a threaded sleeve fixed to the outside of the outer shell body. The inner wall of the lower edge sleeve is provided with an internal thread, and a positioning ring is fixed at the top of the internal thread. The lower edge sleeve is threadedly connected to the threaded sleeve through the internal thread.

[0012] As an improved technical solution, four sets of anti-slip convex plates are installed at equal intervals on the bottom of the outer shell body, and multiple sets of convex strips are installed at equal intervals on the outer wall of the lower edge sleeve.

[0013] As an improved technical solution, the bottom of the inner wall of the sealing cap is designed to be inclined, and the inclined surface is coated with a food-grade hydrophobic coating.

[0014] As an improved technical solution, the outer wall of the sealing plate is fully fitted with the inner wall of the base.

[0015] After adopting the above technical solution, the beneficial effects of the present invention are:

[0016] I. This invention features a detachable inner container installed within the outer shell, with a ventable sealing cap at the top and a threaded venting channel combined with a transverse channel at the bottom of the sealing cap. This effectively extends the steam discharge path, reduces liquid ejection with the airflow, and allows steam from the inner container to be discharged into the regulating chamber on the sealing cap through multiple venting channels. The position of the sealing plate can be adjusted by rotating the venting flow adjustment knob according to the air pressure, unlocking a corresponding number of venting holes for venting. A leak-proof component prevents excessive liquid leakage from the inner container while ensuring smooth airflow. A pressure indicator component allows users to sense the internal pressure of the packaging via a flexible pressure indicator column, informing users and merchants whether the seal is intact and the pressure level, dynamically adjusting the venting flow adjustment knob.

[0017] II. This invention, through multi-stage venting, dynamic sealing, and pressure indication, achieves zero liquid leakage while efficiently venting steam, making it suitable for various scenarios such as food delivery and transportation, and significantly improving the user experience. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a partial structural diagram of the present invention;

[0020] Figure 3 This is a bottom view of the sealing cap structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the internal structure of the sealing cap of the present invention;

[0022] Figure 5 This is a schematic diagram of the unfolded structure of the outer shell and inner container of the present invention;

[0023] Figure 6 For the present invention Figure 5 A schematic diagram of the structure viewed from below;

[0024] Figure 7 For the present invention Figure 2 A magnified structural diagram at point A;

[0025] Figure 8 For the present invention Figure 2 A magnified structural diagram at point B.

[0026] In the diagram: 1. Outer shell; 2. Inner container; 3. Sealing cap; 4. Lower edge sleeve; 5. Upper convex box; 6. Air regulating chamber; 7. Threaded sleeve; 8. Internal thread; 9. Positioning ring; 10. Raised strip; 11. Bottom support plate; 12. Side frame plate; 13. Positioning sleeve; 14. Positioning post; 15. Base; 16. Exhaust channel one; 17. Exhaust flow adjustment knob; 18. Sealing plate; 19. Exhaust hole; 20. Exhaust channel two; 21. Through hole; 22. Elastic air pressure indicator post; 23. Guide rod; 24. Sealing plate; 25. Water permeable hole; 26. Moisture-absorbing expansion cotton. Detailed Implementation

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] This invention provides a technical solution: such as Figures 1 to 8 As shown in this embodiment, a catering packaging structure for leak-proof ventilation includes an outer shell body 1, an inner container 2 inside the outer shell body 1, a sealing cap 3 at the top of the outer shell body 1, a lower edge sleeve 4 at the bottom of the sealing cap 3, an upper convex box 5 at the top of the sealing cap 3, an air regulating chamber 6 inside the upper convex box 5, an exhaust flow regulating knob 17 rotatably connected to the middle of the upper convex box 5, a sealing plate 18 installed at the bottom of the exhaust flow regulating knob 17, multiple sets of exhaust holes 19 on the side of the sealing cap 3, the sealing plate 18 located below the exhaust holes 19, a base 15 at the bottom center of the air regulating chamber 6, multiple sets of exhaust channels 16 evenly spaced inside the base 15, a leak-proof component inside the base 15, a connecting component at the bottom of the lower edge sleeve 4, and a pressure indicator component at the bottom of the outer shell body 1.

[0029] By installing a removable inner container 2 inside the outer shell 1, and installing a ventable sealing cap 3 at the top of the inner container 2, and installing a threaded venting channel 16 combined with a transverse channel at the bottom of the sealing cap 3, the steam discharge path is effectively extended, reducing the amount of liquid ejected with the airflow. This allows the steam inside the inner container 2 to be discharged into the gas regulating chamber 6 on the sealing cap 3 through multiple sets of venting channels 16. The position of the sealing plate 18 can be adjusted by rotating the venting flow adjustment knob 17 according to the air pressure, unlocking the corresponding number of venting holes 19 for venting. The leak-proof component prevents a large amount of liquid from seeping out of the inner container 2 and ensures that the airflow can be discharged smoothly. The air pressure indicator component allows the user to sense the internal pressure of the packaging through the elastic air pressure indicator column 22, indicating to the user and merchant whether the seal is intact and the pressure level, and dynamically adjusting the rotation of the venting flow adjustment knob 17.

[0030] In other embodiments, multiple sets of exhaust channels 16 are distributed at equal intervals along the axis of the base 15. The exhaust channels 16 are generally designed in a threaded shape, and a transverse channel is provided at the top of the exhaust channels 16. The ends of the transverse channels all face the inner wall of the base 15.

[0031] By designing the exhaust channel 16 as a spiral shape, the spiral structure increases the resistance to steam flow. At the same time, it makes it difficult for the liquid in the inner container 2 to completely pass through the interior of the exhaust channel 16 through splashing. The transverse channel guides the steam to diffuse towards the inner wall of the base 15, avoiding direct spraying. This significantly reduces the probability of liquid being discharged with the steam, while ensuring exhaust efficiency.

[0032] In other embodiments, the leak-proof component includes guide rods 23 fixed on both sides inside the base 15, and a sealing plate 24 is provided on the outside of the two sets of guide rods 23. Multiple sets of water-permeable holes 25 are opened in the middle of the sealing plate 24, and moisture-absorbing and expanding cotton 26 is glued to the lower end of the sealing plate 24.

[0033] By installing a liftable sealing plate 24 inside the base 15, when the liquid in the inner container 2 is subjected to significant agitation, a large amount of liquid rises into the base 15 through the exhaust channel 16. The liquid then falls along the surface of the sealing plate 24 into the water permeable holes 25, where the moisture-absorbing and expanding cotton 26 at the bottom of the water permeable holes 25 absorbs the liquid. Once the moisture-absorbing and expanding cotton 26 has absorbed a sufficient amount of liquid, it expands, thereby pushing the sealing plate 24 upwards along the two sets of water permeable holes 25. This allows the sealing plate 24 to rise to the openings of the multiple exhaust channels 16 on the base 15, sealing the openings of the multiple exhaust channels 16 and preventing further liquid leakage.

[0034] In other embodiments, the air pressure indicator component includes through holes 21 evenly spaced on the upper part of the outer shell body 1, multiple sets of elastic air pressure indicator columns 22 evenly spaced on the lower part of the outer shell body 1, and multiple sets of exhaust channels 20 evenly spaced on the outer edge of the lower end of the air regulating chamber 6.

[0035] By installing multiple sets of elastic air pressure indicator columns 22 at the bottom of the outer shell body 1, when the steam pressure in the air regulating chamber 6 is too high, the steam in the air regulating chamber 6 can be transmitted out of the air regulating chamber 6 through multiple sets of exhaust channels 20, and the outer shell body 1 can absorb the steam into the interior through multiple sets of through holes 21. When the gas pressure in the outer shell body 1 is too high, the elastic air pressure indicator column 22 can be extended outward and protruded after being subjected to air pressure, so as to prompt the shop owner or user to vent the gas in time by adjusting the exhaust flow regulating knob 17.

[0036] In other embodiments, a sealing strip is installed on the top of the outer shell body 1, and a groove matching the sealing strip is opened at the bottom of the outer edge of the inner container 2;

[0037] The sealing strip increases the airtightness between the outer shell 1 and the inner container 2, allowing the gas discharged from the exhaust channel 20 to smoothly enter the multiple through holes 21 on the outer shell 1, and also ensuring the tightness of the connection between the outer shell 1 and the inner container 2.

[0038] In other embodiments, multiple sets of bottom support plates 11 are cast at equal intervals on the bottom of the inner wall of the outer shell body 1, multiple sets of side frame plates 12 are installed at equal intervals on the inner wall of the outer shell body 1, a positioning sleeve 13 is installed at the center of the inner wall of the outer shell body 1, and a positioning post 14 is installed at the center of the bottom of the inner liner container 2.

[0039] When the inner container 2 is placed inside the outer shell 1, the positioning pin 14 at the bottom of the inner container 2 can be inserted into the positioning sleeve 13 at the bottom of the outer shell 1, and multiple sets of bottom support plates 11 can form bottom support for the inner container 2, and multiple sets of side support plates 12 can form lateral support for the inner container 2. This can ensure the stability of the inner container 2 inside the outer shell 1, and at the same time prevent a large amount of heat from the inner container 2 from being transferred to the outer shell 1, thus preventing the user from being burned by high temperature when picking up the outer shell 1.

[0040] In other embodiments, the connecting assembly includes a threaded sleeve 7 fixed to the outside of the housing body 1, an internal thread 8 is provided on the inner wall of the lower end of the lower edge sleeve 4, a positioning ring 9 is fixed at the top of the internal thread 8, and the lower edge sleeve 4 is threadedly connected to the threaded sleeve 7 through the internal thread 8.

[0041] By screwing the threaded sleeve 7 into the internal thread 8, the sealing cover 3 and the outer shell body 1 can be quickly locked and disassembled. The positioning ring 9 limits the screwing depth, ensuring a tight connection between the outer shell body 1 and the sealing cover 3. This not only improves the ease of assembly and avoids deformation of the sealing structure due to excessive tightening, but also enhances the sealing strength of the connection and prevents the sealing cover 3 from being accidentally opened during transportation.

[0042] In other embodiments, four sets of anti-slip convex plates are installed at equal intervals on the bottom of the outer shell body 1, and multiple sets of convex strips 10 are installed at equal intervals on the outer wall of the lower edge sleeve 4;

[0043] This design allows the outer shell 1 to increase the friction between its bottom and the outside world through the anti-slip convex plate, thereby preventing the outer shell 1 from sliding accidentally during use. The lower edge sleeve 4 increases the friction with the hand through the convex strip 10, making it easier to rotate the lower edge sleeve 4.

[0044] In other embodiments, the bottom of the inner wall of the sealing cap 3 is designed to be inclined, and the inclined surface is coated with a food-grade hydrophobic coating.

[0045] This design prevents liquid from adhering to the bottom of the inner wall of the sealing cap 3 for a long time when it splashes into the inner container 2 or when a lot of condensate forms. It also guides the liquid back into the inner container 2.

[0046] In other embodiments, the outer wall of the sealing plate 24 is fully fitted with the inner wall of the base 15;

[0047] With this design, when the moisture-absorbing and expanding cotton 26 absorbs water and expands, it can move upward along the two sets of guide rods 23 to the limit through the water-permeable holes 25, allowing the sealing plate 24 to move to the outlet of the multiple sets of exhaust channels 16 on the base 15, forming a seal at the multiple sets of exhaust channels 16 to prevent liquid from continuing to leak.

[0048] This invention provides a food packaging structure that achieves leak-proof and venting protection, the specific working principle of which is as follows:

[0049] Place the inner container 2 inside the outer body 1, then put the food into the inner container 2, and then put the sealing cap 3 on the top of the inner container 2. By rotating the sealing cap 3, the sealing cap 3 is tightly connected to the threaded sleeve 7 on the outside of the outer body 1 through the internal thread 8. When the steam generated by the food in the inner container 2 is released upward through the multiple sets of exhaust channels 16 on the sealing cap 3 and enters the horizontal channel, the spiral path causes the liquid to adhere to the channel wall due to centrifugal force, allowing only the gas to be released. The steam is further released outward through the exhaust hole 19 on the upper sealing cap 3. The opening and closing degree of the sealing plate 18 is controlled by the exhaust flow adjustment knob 17 to adjust the exhaust speed. When the internal pressure is too high, the elastic air pressure indicator column 22 expands and bulges outward, prompting the user to manually rotate the exhaust flow adjustment knob 17 to increase the exhaust volume.

[0050] The electrical components mentioned in this article are all electrically connected to an external main controller and industrial power supply, and the main controller can be a conventional known device such as a computer that provides control.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A catering packaging structure for achieving leak-proof and venting protection, comprising an outer shell body (1), characterized in that: The outer shell (1) contains an inner container (2). A sealing cap (3) is provided at the top of the outer shell (1). A lower edge sleeve (4) is provided at the lower end of the sealing cap (3). An upper convex box (5) is provided at the upper end of the sealing cap (3). An air regulating chamber (6) is opened inside the upper convex box (5). An exhaust flow regulating knob (17) is rotatably connected to the middle of the upper convex box (5). A sealing plate (1) is installed at the bottom of the exhaust flow regulating knob (17). 8) The sealing cover (3) has multiple sets of exhaust holes (19) on its side. The sealing plate (18) is located at the lower end of the exhaust holes (19). The air regulating chamber (6) has a base (15) at the bottom center. Multiple sets of exhaust channels (16) are opened at equal intervals inside the base (15). The base (15) has a leak-proof component. The lower edge sleeve (4) has a connecting component at its lower end. The outer shell body (1) has a pressure indicator component at its bottom end.

2. The catering packaging structure for achieving leak-proof and venting protection according to claim 1, characterized in that: Multiple sets of exhaust channels (16) are distributed at equal intervals along the axis of the base (15). The exhaust channels (16) are designed in a threaded shape, and a transverse channel is provided at the top of the exhaust channels (16). The ends of the transverse channels all face the inner wall of the base (15).

3. The catering packaging structure for achieving leak-proof and venting protection according to claim 1, characterized in that: The leak-proof component includes guide rods (23) fixed inside both sides of the base (15), and sealing plates (24) are provided on the outside of the two sets of guide rods (23). Multiple sets of water-permeable holes (25) are opened in the middle of the sealing plate (24), and moisture-absorbing and expanding cotton (26) is glued to the lower end of the sealing plate (24).

4. The catering packaging structure for achieving leak-proof and venting protection according to claim 1, characterized in that: The air pressure indicator component includes through holes (21) evenly spaced on the upper part of the outer shell body (1), multiple sets of elastic air pressure indicator columns (22) evenly spaced on the lower part of the outer shell body (1), and multiple sets of exhaust channels (20) evenly spaced on the lower outer edge of the air regulating chamber (6).

5. A catering packaging structure for achieving leak-proof and venting protection according to claim 1, characterized in that: The outer shell body (1) is fitted with a sealing strip on the top, and the inner container (2) has a groove at the bottom of the outer edge that matches the sealing strip.

6. A food packaging structure for preventing leakage and venting according to claim 2, characterized in that: The bottom of the inner wall of the outer shell (1) is cast with multiple sets of bottom support plates (11) at equal intervals. The inner wall of the outer shell (1) is installed with multiple sets of side frame plates (12) at equal intervals. The center of the inner wall of the outer shell (1) is installed with a positioning sleeve (13). The center of the bottom of the inner container (2) is installed with a positioning column (14).

7. A food packaging structure for achieving leak-proof and venting protection according to claim 1, characterized in that: The connecting assembly includes a threaded sleeve (7) fixed to the outside of the outer shell body (1), and an internal thread (8) is provided on the inner wall of the lower end of the lower edge sleeve (4). A positioning ring (9) is fixed at the top of the internal thread (8), and the lower edge sleeve (4) is threadedly connected to the threaded sleeve (7) through the internal thread (8).

8. A food packaging structure for preventing leakage and venting according to claim 1, characterized in that: The bottom of the outer shell body (1) is equipped with four sets of anti-slip convex plates at equal intervals, and the outer wall of the lower edge sleeve (4) is equipped with multiple sets of convex strips (10) at equal intervals.

9. A food packaging structure for preventing leakage and venting according to claim 1, characterized in that: The bottom of the inner wall of the sealing cap (3) is designed to be inclined, and the inclined surface is coated with a food-grade hydrophobic coating.

10. A catering packaging structure for achieving leak-proof and venting protection according to claim 3, characterized in that: The outer wall of the sealing plate (24) is fully fitted with the inner wall of the base (15).

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