Packaging box for modified atmosphere preservation of Shanbei mutton

Abstract

The utility model relates to packing box technical field, concretely for a kind of packing box for northern Shaanxi mutton modified atmosphere fresh-keeping, including box body and box cover, the both sides of the box cover are equipped with multiple exhaust holes, gas selective permeation membrane is arranged in the exhaust hole, the inner wall side of the box body is fixedly connected with baffle, the baffle separates box body into first placement cavity, second placement cavity, multiple gas generating components are arranged in the first placement cavity, second placement cavity. In the utility model, through the cooperation setting of multiple gas generating components and multiple exhaust holes, the oxygen-enriched air with lighter density that is replaced in the bottom of box body will rise, and is preferentially discharged through exhaust hole, this structure utilizes gas density difference, creates a " first light gas (oxygen-enriched air), after leaving " physical process, reduces the initial loss, so that the effect of modified atmosphere fresh-keeping is better.

Description

Technical Field

[0001] This utility model relates to the field of packaging box technology, and in particular to a packaging box for modified atmosphere preservation of Shaanxi mutton. Background Technology

[0002] Shaanbei mutton is a specialty of northern Shaanxi Province, with Hengshan mutton being particularly famous. The Shaanbei white cashmere goats raised locally are one of the three major cashmere goat breeds in China, characterized as a "dual-purpose" breed for both cashmere and meat. This breed is slaughtered at a young age and has good aging processes, resulting in mutton with excellent volatile fatty acid content, vitamin B2 content, and fat melting point. Nowadays, fresh meat is packaged in boxes, with the top of the box sealed with plastic film to achieve airtightness. It is then transported to supermarkets under refrigeration. This prevents the fresh meat from spoiling and becoming infected by contact with outside air and bacteria.

[0003] A food packaging box for preserving fresh meat, with authorized publication number CN218617637U, includes a packaging box body, corrugated grooves, a water-absorbing mechanism, and an opening mechanism. A water collection chamber is located at the bottom of the packaging box body, with multiple uprights inside and a tray above them. Fresh meat is placed on the tray. Multiple corrugated grooves are arranged side-by-side on the inner wall of the packaging box. An opening mechanism is located on the top edge of the packaging box, enabling quick opening for sealing. A water-absorbing mechanism is located within the water collection chamber to remove blood and water. This eliminates the need to dry the surface of the fresh meat, allowing for direct packaging and sealing without prolonged waiting time. Furthermore, the removal of blood and water after packaging ensures the quality of the fresh meat while minimizing the amount of blood and water inside the packaging box.

[0004] Regarding the aforementioned technologies, the existing packaging boxes have the following drawbacks: ordinary tray packaging has poor sealing performance and cannot effectively block oxygen, resulting in a short shelf life; although vacuum packaging can isolate oxygen, the strong physical compression can damage the mutton muscle fibers and cause juice loss, leading to a poor taste and shape after thawing. Therefore, this utility model provides a packaging box for modified atmosphere preservation of Shaanxi mutton. Utility Model Content

[0005] The purpose of this application is to provide a packaging box for modified atmosphere preservation of Shaanxi mutton, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a packaging box for modified atmosphere preservation of Shaanxi mutton, comprising a box body and a box lid, wherein multiple vent holes are provided on both sides of the box lid, and a gas selective permeation membrane is provided in the vent holes; a partition is fixedly connected to the inner wall side of the box body, and the partition divides the box body into a first placement cavity and a second placement cavity, wherein multiple gas generating components are provided in both the first placement cavity and the second placement cavity.

[0007] Preferably, the gas generating assembly includes a placement frame fixedly connected to the inner wall side of the box, a communicating gas guide tube fixedly connected to the bottom of the placement frame, a gas generating agent pack disposed inside the placement frame, and an easy-tear film for sealing the gas generating agent pack on the outside of the gas generating agent pack.

[0008] Preferably, both the first placement cavity and the second placement cavity are provided with four stable clamping components.

[0009] Preferably, the stabilizing clamping assembly includes a fixing frame fixedly connected to the inner wall side of the box, a groove is provided on the outer side of the fixing frame, a sliding block is slidably connected to the inner wall side of the groove, a pressing plate is fixedly connected to the outer side of the sliding block, and a rubber pad is laid on the outer side of the pressing plate.

[0010] Preferably, a screw is rotatably connected to the inner wall side of the groove, a rotating cylinder is threadedly connected to the outer side of the screw, a deflection ring is fixedly connected to the outer side of the rotating cylinder, and a slot adapted to the deflection ring is opened on the inner side of the sliding block.

[0011] Preferably, a limiting ring is fixedly connected to the outer side of the deflection ring, a guide groove adapted to the limiting ring is opened on the inner wall side of the slot, and multiple vent pipes are provided through the inner side of the partition.

[0012] In summary, the technical effects and advantages of this utility model are as follows: In this invention, by coordinating multiple gas generating components with multiple exhaust ports, the lighter, oxygen-enriched air that is displaced at the bottom of the box rises and is preferentially discharged through the exhaust ports. This structure utilizes the gas density difference to create a system where "lighter gas (oxygen-enriched air) is discharged first, followed by [other gas]". The physical process of "reducing" The initial loss makes modified atmosphere preservation more effective. Attached Figure Description

[0013] 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 based on these drawings without creative effort.

[0014] Figure 1 This is a first-view axial side view structural diagram of the present invention; Figure 2 This is a schematic diagram of the second-view axial side structure of this utility model; Figure 3 This is a schematic diagram of the structure of the placement frame and the air duct in this utility model; Figure 4 for Figure 2 A magnified structural diagram at point A.

[0015] In the diagram: 1. Box body; 2. Box lid; 3. Vent hole; 4. Partition; 5. Vent pipe; 6. Fixing frame; 7. Placement frame; 8. Gas guide pipe; 9. Gas generator pack; 10. Easy-tear film; 11. Screw; 12. Rotating cylinder; 13. Deflection ring; 14. Sliding block; 15. Squeezing plate; 16. Groove. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Example 1: Reference Figure 1-4The diagram shows a modified atmosphere packaging box for Shaanxi mutton, comprising a box body 1 and a lid 2. The box body 1, as the core load-bearing component, provides a stable space for the Shaanxi mutton and related preservation components, ensuring the integrity of the overall structure. The lid 2 closes the box body 1, achieving a sealed closure and preventing the intrusion of external impurities and microorganisms. Multiple vents 3 are provided on both sides of the lid 2. These vents 3 allow for the timely release of metabolic gases such as carbon dioxide produced by the respiration of the mutton, preventing gas accumulation and abnormal internal pressure. The vents 3 are equipped with a gas-selective permeation membrane. The membrane material has a much higher permeation rate for nitrogen and oxygen than for carbon dioxide. When the internal pressure of the packaging increases, the membrane with the faster permeation rate... and The gas will be preferentially and quickly discharged through the membrane, while preventing a large amount of external oxygen from entering, maintaining a suitable gas atmosphere inside the box. A partition 4 is fixedly connected to the inner wall of the box body 1, dividing the box body 1 into a first placement chamber and a second placement chamber. Its function is to realize the separate placement of mutton and gas generating components, avoiding direct contact between the two and causing contamination. At the same time, it allows the gas generated by the gas generating components to diffuse more evenly to the mutton storage area. Multiple gas generating components are set in both the first and second placement chambers. Multiple components work together to stably and continuously generate the gas required for preservation, ensuring that the gas concentration inside the box is maintained within a reasonable range. The gas generating component includes a placement frame 7 fixedly connected to the inner wall of the box body 1. The placement frame 7 provides a fixed installation position for the gas generating agent pack 9, preventing it from shifting during transportation or handling, and ensuring the stability of gas generation. A connected gas guide pipe 8 is fixedly connected to the bottom of the placement frame 7. The gas guide pipe 8 can directionally export the preservation gas generated by the gas generating agent pack 9, guiding the gas to quickly and evenly distribute to various areas inside the box body 1, improving the preservation effect. The placement frame 7 contains a gas generating agent pack 9, which contains reagents that can generate gases such as nitrogen and carbon dioxide required for modified atmosphere preservation. The outside of the gas generating agent pack 9 is provided with an easy-tear film 10 for sealing the gas generating agent pack 9. When not in use, the easy-tear film 10 can seal the gas generating agent pack 9 to prevent it from reacting with air in advance. When in use, the gas generating agent pack 9 can be removed to allow it to function normally.

[0019] Example 2: Reference Figure 1-4Based on the same concept as Embodiment 1 above, this embodiment further proposes that four stabilizing clamping components are provided in both the first and second placement cavities. These four components correspond to the front, back, left, and right directions of the placement cavity, respectively, and are used to stably clamp the items within the placement cavity from different directions. Through the synergistic force of multiple directions, the items are fixed in the center of the placement cavity, effectively preventing shaking or displacement during handling and movement. The stabilizing clamping component includes a fixing frame 6 fixedly connected to the inner wall of the box 1, and can also resist the reaction force generated during clamping through its own structural strength, preventing overall deformation of the component. A groove 16 is provided on its outer side, providing precise sliding for the sliding block 14. The guide space ensures that the sliding block 14 can only move in the direction of approaching or moving away from the object, avoiding deviation and jamming; the sliding block 14 is slidably connected to the inner wall of the groove 16, and the sliding block 14 can move smoothly along the groove 16 to drive the squeezing plate 15 to approach or move away from the object, realizing the switching of clamping and releasing; the squeezing plate 15 is fixedly connected to the outer side of the sliding block 14, and the squeezing plate 15 directly contacts the object to achieve clamping. Its plate-like structure can increase the contact area with the object, so that the clamping force is applied more evenly to the surface of the object; a rubber pad is laid on the outer side of the squeezing plate 15, which can increase friction and further improve clamping stability. At the same time, the flexibility of the rubber material can prevent scratches on the surface of the object during squeezing. Damage such as indentations; a screw 11 is rotatably connected to the inner wall of the groove 16. As the core component for power transmission, the screw 11's rotation drives the rotating cylinder 12 to move axially through a threaded engagement. The threaded structure has a self-locking function, which can maintain a stable position after clamping and prevent the rotating cylinder 12 from moving on its own. The rotating cylinder 12 is threadedly connected to the outer side of the screw 11. Under the threaded force of the screw 11, the rotating cylinder 12 moves smoothly axially and drives the deflection ring 13 to move synchronously, realizing the longitudinal transmission of power. The deflection ring 13 is fixedly connected to the outer side of the rotating cylinder 12. The deflection ring 13 converts its axial movement into the radial movement of the sliding block 14 by engaging with the inclined surface of the slot hole of the sliding block 14, thus completing the operation. The sliding block 14 has a slot on its inner side that matches the deflection ring 13. The slot provides ample space for the movement of the deflection ring 13, and the power is transmitted through the tight fit between the inner wall of the slot and the deflection ring 13, ensuring the high efficiency of the motion conversion. A limit ring is fixedly connected to the outer side of the deflection ring 13. The limit ring cooperates with the guide groove on the inner wall of the slot to effectively prevent the deflection ring 13 from separating from the sliding block 14 during the movement, ensuring the integrity of the component structure. A guide groove is provided on the side of the inner wall of the slot that matches the limit ring. The guide groove provides a precise movement path for the limit ring and restricts its radial displacement, ensuring that the deflection ring 13 can only move along the axial direction, avoiding the impact of radial offset on the motion conversion accuracy.Multiple vent pipes 5 are installed through the inner side of the partition 4. These vent pipes 5 allow for gas flow between the first and second placement chambers. When the temperature or pressure in the two chambers changes, they can quickly balance the pressure, preventing the chamber doors from being difficult to open or the component operation from being obstructed due to pressure differences.

[0020] The working principle of this utility model is as follows: Fresh meat is placed in the first and second placement chambers. Dragging the rotating cylinder 12 causes it to rotate, which in turn drives the sliding block 14 and the extrusion plate 15 downwards via the deflection ring 13, clamping and fixing the fresh meat. The easy-tear film 10 is then torn open, allowing the gas generator packet 9 to come into contact with the air inside the box 1 through its porous outer packaging material (usually a special paper or non-woven fabric). The main components of the gas generator are typically iron powder and vitamin C, which react with oxygen and water in the air to release carbon dioxide. Because its density is greater than air, it will naturally sink and slowly diffuse into the meat storage space below through the air duct 8. Meanwhile, the lighter, oxygen-rich air that is replaced at the bottom of the box 1 will rise and be preferentially expelled through the exhaust port 3. This structure utilizes the gas density difference to create a system where "lighter air (oxygen-rich air) is expelled first, followed by [other air]". The physical process of "reducing" The initial loss.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A packaging box for modified atmosphere packaging of Shaanxi mutton, comprising a box body (1) and a box lid (2), characterized in that: Multiple vent holes (3) are provided on both sides of the box cover (2). A gas selective permeation membrane is provided in the vent hole (3). A partition (4) is fixedly connected to the inner wall side of the box body (1). The partition (4) divides the box body (1) into a first placement cavity and a second placement cavity. Multiple gas generating components are provided in both the first placement cavity and the second placement cavity.

2. The packaging box for modified atmosphere packaging of Shaanxi mutton according to claim 1, characterized in that: The gas generating assembly includes a placement frame (7) fixedly connected to the inner wall side of the box (1), a gas guide tube (8) fixedly connected to the bottom of the placement frame (7), a gas generating agent pack (9) is provided inside the placement frame (7), and an easy-tear film (10) for sealing the gas generating agent pack (9) is provided on the outside of the gas generating agent pack (9).

3. A packaging box for modified atmosphere packaging of Shaanxi mutton according to claim 2, characterized in that: Both the first and second placement cavities are equipped with four stabilizing clamping components.

4. A packaging box for modified atmosphere packaging of Shaanxi mutton according to claim 3, characterized in that: The stabilizing clamping assembly includes a fixed frame (6) fixedly connected to the inner wall side of the box body (1). A groove (16) is provided on the outer side of the fixed frame (6). A sliding block (14) is slidably connected to the inner wall side of the groove (16). An extrusion plate (15) is fixedly connected to the outer side of the sliding block (14). A rubber pad is laid on the outer side of the extrusion plate (15).

5. A packaging box for modified atmosphere packaging of Shaanxi mutton according to claim 4, characterized in that: The inner wall of the groove (16) is rotatably connected to a screw (11), and the outer side of the screw (11) is threadedly connected to a rotating cylinder (12). The outer side of the rotating cylinder (12) is fixedly connected to a deflection ring (13), and the inner side of the sliding block (14) is provided with a slot that matches the deflection ring (13).

6. A packaging box for modified atmosphere packaging of Shaanxi mutton according to claim 5, characterized in that: A limiting ring is fixedly connected to the outer side of the deflection ring (13), and a guide groove adapted to the limiting ring is opened on the inner side of the slot hole. Multiple vent pipes (5) are provided through the inner side of the partition plate (4).

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