Food plastic packaging box with good protection performance

Abstract

The utility model relates to food plastic packing box technical field, especially for a kind of food plastic packing box with good protective performance, including protective shell, the upper part of the outer surface of protective shell is provided with support plate, the upper end of protective shell and support plate is provided with back type sealing groove, the upper end of two back type sealing grooves is commonly provided with sealing mechanism, the upper end middle part of sealing mechanism is provided with visual window, the upper end of sealing mechanism is provided with handle.The utility model discloses a kind of food plastic packing box with good protective performance, by cover, protective shell, support plate, back type sealing pad, back type sealing groove and other components, realize box body tightly sealed, effectively isolate outside air and moisture, substantially reduce the risk of food damp, deterioration, by the heat preservation shell in protective shell, water pipe, sealing plug, sealing cover and other components, create stable temperature environment for the food in box to avoid outside temperature radical change leading to food deterioration.

Description

Technical Field

[0001] This utility model relates to the field of food plastic packaging box technology, and in particular to a food plastic packaging box with good protective performance. Background Technology

[0002] In the food packaging industry, plastic packaging has long held an important position due to its lightweight, moisture-proof, and corrosion-resistant properties. However, with the development of the times, consumers are paying increasing attention to food safety and quality, and the shortcomings of traditional food plastic packaging boxes in terms of protective performance are gradually being exposed. Common packaging boxes have poor sealing performance, relying only on simple snap-fit ​​or single-layer film seals. External dust and impurities can easily penetrate, leading to food contamination. They also cannot effectively isolate air and moisture, accelerating food moisture absorption and spoilage, greatly shortening shelf life. In terms of temperature control, ordinary plastic packaging boxes cannot cope with complex environments. When the external temperature fluctuates greatly, the food inside the box is easily affected. High temperatures cause food spoilage, while low temperatures lead to a deterioration in taste. Even if some have insulation designs, they rely on a single material, making it impossible to flexibly adjust the temperature, and maintenance is inconvenient. Therefore, we have launched a new food plastic packaging box with excellent protective performance. Utility Model Content

[0003] The main objective of this invention is to provide a food plastic packaging box with good protective performance, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A food plastic packaging box with good protective performance includes a protective shell. A support plate is provided on the upper part of the outer surface of the protective shell. Both the protective shell and the support plate have a U-shaped sealing groove at their upper ends. A sealing mechanism is provided at the upper end of the two U-shaped sealing grooves. A viewing window is provided in the middle of the upper end of the sealing mechanism. A handle is provided at the upper end of the sealing mechanism. Placement plates are provided on the lower left and lower right sides of the inner surface of the protective shell. A food divider is provided at the upper end of both placement plates.

[0006] Preferably, the sealing mechanism includes a fixed base and a cover plate. The lower end of the cover plate is provided with two U-shaped sealing gaskets. An insert block is fixedly installed at the middle of the front end of the cover plate via a connecting block. A limit hole is provided at the middle of the right end of the insert block. A slot is provided at the upper left end of the fixed base. A pull rod is movably installed at the middle of the right end of the fixed base. A guide plate is fixedly installed at the left end of the pull rod. The guide plate is movably installed inside the right side of the fixed base via an inner groove. A limit rod is fixedly installed at the middle of the left end of the guide plate. A spring is movably sleeved on the outer surface of the pull rod.

[0007] Preferably, the left and right portions of the outer surface of the spring are fixedly connected to the guide plate and the inner right side of the fixing seat, respectively.

[0008] By adopting the above technical solution, the guide plate provides stable elastic support, ensuring that the guide plate is always subjected to uniform elastic force during movement, and avoiding guide deviation due to uneven force.

[0009] Preferably, the insert is movably inserted into the interior of the slot.

[0010] By adopting the above technical solution, the cooperation between the plug and the slot can play a preliminary positioning role in the relative position of the two components, and realize the rapid assembly and disassembly of the two components.

[0011] Preferably, the limiting rod is movably engaged inside the limiting hole by a pull rod, a guide plate, and a spring.

[0012] By adopting the above technical solution, the movement of the limit rod can be manually controlled by the pull rod, and the guide plate can provide precise guidance for the movement of the limit rod, ensuring that the limit rod always inserts into or disengages from the limit hole along the correct trajectory.

[0013] Preferably, the protective shell includes an insulation shell, the lower middle part of which is provided with a drain hole and an annular sealing groove, the drain hole is sealed with a plug, the lower end of the plug is fixedly installed with a sealing cover, the upper end of the sealing cover is provided with an annular sealing gasket, and the lower right part of the insulation shell is inserted and fixedly installed with a water inlet pipe, the upper end of the water inlet pipe is sealed with a sealing plug.

[0014] By adopting the above technical solutions: the heat insulation shell can effectively reduce the heat exchange between the inside and outside of the shell, providing a stable temperature environment for the equipment or medium inside the shell. The drainage hole facilitates the drainage of the water inside the heat insulation shell when needed. The annular sealing groove cooperates with the annular sealing gasket on the sealing cover to improve the sealing performance at the drainage hole. The sealing plug can achieve sealing when the water inlet pipe is not in use, preventing heat loss from the shell or the entry of external pollutants.

[0015] Preferably, the interior of the water inlet pipe is connected to the interior of the insulation shell, and the sealing cap is sealed and snapped into the interior of the drain hole and the annular sealing groove by a plug and a sealing cap.

[0016] By adopting the above technical solution, the key to realizing the function of the water inlet pipe is to connect the water inlet pipe to the inside of the insulation shell, ensuring that the injected insulation medium can smoothly enter the inside of the insulation shell.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By placing the cover plate over the protective shell and the support plate, the U-shaped sealing gasket at the lower end of the cover plate is embedded in the U-shaped sealing groove, initially blocking external dust and impurities from entering the box and forming a basic sealing barrier. Then, the cover plate is pushed to insert the insert block into the slot of the fixing seat, completing the precise positioning of the cover plate and the fixing seat, avoiding the cover plate shifting during the sealing process and affecting the sealing effect. When the insert block is inserted, it squeezes the limiting rod, which drives the guide plate to move to the right and compress the spring. When the limiting hole is aligned with the limiting rod, the spring returns to its original position and pushes the guide plate, so that the limiting rod is locked into the limiting hole, and the cover plate is stably fixed, achieving a tight seal of the box body, effectively isolating external air and moisture, and reducing the risk of food getting damp and spoiling.

[0019] 2. The insulating shell within the protective outer casing automatically reduces heat exchange between the inside and outside of the casing, creating a stable temperature environment for the food inside and preventing spoilage due to drastic changes in external temperature. When enhanced heat preservation or cold preservation is needed, open the sealing plug at the top of the water inlet pipe and inject hot water (for heat preservation) or cold water (for cold preservation) into the insulating shell through the water inlet pipe. After injection, tighten the sealing plug to prevent heat or cold loss from the shell and to prevent external dust from entering through the water inlet pipe and contaminating the food. If condensation occurs inside the insulating shell or the temperature control medium needs to be replaced, open the sealing cover to disengage the plug from the drain hole to quickly drain the internal liquid. After draining, reset the plug and allow the annular sealing gasket to fit into the annular sealing groove to quickly restore the sealing and heat preservation effect of the insulating shell. The entire temperature control and maintenance process is simple to operate, providing flexible temperature control support for food storage in different scenarios and improving the practicality of the packaging box. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a food plastic packaging box with good protective performance according to this utility model;

[0021] Figure 2 This is a schematic cross-sectional view of the overall structure of a food plastic packaging box with good protective performance according to this utility model;

[0022] Figure 3 This is a schematic diagram of the overall structure of the sealing mechanism of a food plastic packaging box with good protective performance according to this utility model;

[0023] Figure 4 This is a schematic diagram of the overall structure of the protective shell of a food plastic packaging box with good protective performance according to this utility model.

[0024] In the diagram: 1. Protective outer shell; 10. Insulation shell; 11. Drain hole; 12. Block; 13. Sealing cap; 14. Annular sealing gasket; 15. Annular sealing groove; 16. Water inlet pipe; 17. Sealing plug; 2. Support plate; 3. U-shaped sealing groove; 4. Sealing mechanism; 40. Fixing base; 41. Cover plate; 42. U-shaped sealing gasket; 43. Insert block; 44. Limiting hole; 45. Slot; 46. Pull rod; 47. Guide plate; 48. Limiting rod; 49. Spring; 5. Viewing window; 6. Handle; 7. Placement plate; 8. Food partition. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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.

[0028] Please see Figure 1-4 This utility model provides a technical solution:

[0029] A food plastic packaging box with good protective performance includes a protective shell 1. A support plate 2 is provided on the upper part of the outer surface of the protective shell 1. Both the protective shell 1 and the support plate 2 are provided with a U-shaped sealing groove 3 at their upper ends. A sealing mechanism 4 is provided at the upper end of the two U-shaped sealing grooves 3. A viewing window 5 is provided in the middle of the upper end of the sealing mechanism 4. A handle 6 is provided at the upper end of the sealing mechanism 4. Placement plates 7 are provided on the lower left and lower right sides of the inner surface of the protective shell 1. A food partition 8 is provided at the upper end of both placement plates 7.

[0030] In this embodiment, the sealing mechanism 4 includes a fixed base 40 and a cover plate 41. Two U-shaped sealing gaskets 42 are provided at the lower end of the cover plate 41. An insert block 43 is fixedly installed at the middle of the front end of the cover plate 41 through a connecting block. A limiting hole 44 is provided at the middle of the right end of the insert block 43. A slot 45 is provided at the upper left end of the fixed base 40. A pull rod 46 is movably installed at the middle of the right end of the fixed base 40. A guide plate 47 is fixedly installed at the left end of the pull rod 46. The guide plate 47 is movably installed on the right side inside the fixed base 40 through an inner groove. A limiting rod 48 is fixedly installed at the middle of the left end of the guide plate 47. A spring 49 is movably sleeved on the outer surface of the pull rod 46. The left and right parts of the outer surface of the spring 49 are fixedly connected to the guide plate 47 and the right side inside the fixed base 40, respectively. The insert block 43 is movably inserted into the inside of the slot 45. The limiting rod 48 is movably engaged in the inside of the limiting hole 44 through the pull rod 46, the guide plate 47, and the spring 49.

[0031] Through the above scheme: when the box needs to be sealed, firstly, the cover plate 41 is closed in the corresponding position. At this time, the two U-shaped sealing gaskets 42 at the lower end of the cover plate 41 achieve a seal between the cover plate 41 and the box. Then, the cover plate 41 is pushed so that the insert 43, which is fixedly installed at the middle of the front end of the cover plate 41 through the connecting block, is movably inserted into the slot 45 set at the upper left of the fixed seat 40. The cooperation between the insert 43 and the slot 45 not only achieves the initial positioning of the cover plate 41 and the fixed seat 40, but also, during the process of inserting the insert 43 into the slot 45, the insert 43 will squeeze the limiting rod 48, causing the limiting rod 48 to drive the guide plate 47 to move to the right. When the guide plate 47 moves, it will compress the spring 49. When the right end of the insert 43... When the limiting hole 44 in the middle moves to the position aligned with the limiting rod 48, the compressed spring 49 generates a restoring force, pushing the guide plate 47 to move to the left. The guide plate 47 then drives the limiting rod 48 to engage with the limiting hole 44 through the cooperation of the pull rod 46, the guide plate 47, and the spring 49, thus completing the limiting and fixing of the insert 43, thereby stably fixing the cover plate 41 to the box body and achieving a tight seal of the box body. If it is necessary to open the packaging box, simply pull the pull rod 46. The pull rod 46 drives the guide plate 47 to move to the right. The guide plate 47 drives the limiting rod 48 to disengage from the limiting hole 44, while compressing the spring 49. At this time, the insert 43 can be pulled out from the slot 45, thereby opening the cover plate 41.

[0032] In this embodiment, the protective outer shell 1 includes an insulation shell 10. A drain hole 11 and an annular sealing groove 15 are provided in the middle of the lower end of the insulation shell 10. A plug 12 is sealed and snapped into the inside of the drain hole 11. A sealing cover 13 is fixedly installed at the lower end of the plug 12. An annular sealing gasket 14 is provided at the upper end of the sealing cover 13. A water inlet pipe 16 is inserted and fixedly installed in the lower right part of the insulation shell 10. A sealing plug 17 is sealed and snapped into the upper end of the water inlet pipe 16. The inside of the water inlet pipe 16 is connected to the inside of the insulation shell 10. The sealing cover 13 is sealed and snapped into the inside of the drain hole 11 and the annular sealing groove 15 through the plug 12 and the sealing cover 13.

[0033] Through the above solution: During use, the heat-insulating shell 10 in the protective outer shell 1 can effectively reduce heat exchange between the inside and outside of the shell, providing a stable temperature environment for the food inside. When the outside temperature is too high or too low, it can prevent the food inside from spoiling due to drastic temperature changes, which is especially suitable for storing food that needs to be kept warm or cold. When it is necessary to inject heat-insulating medium into the heat-insulating shell 10, hot water is used for heat preservation and cold water is used for cold preservation, the sealing plug 17 at the upper end of the water inlet pipe 16 can be opened. Since the inside of the water inlet pipe 16 is connected to the inside of the heat-insulating shell 10, the heat-insulating medium or cleaning liquid can smoothly enter the inside of the heat-insulating shell 10 through the water inlet pipe 16 to keep the food warm. After the injection or cleaning is completed, the sealing plug 17 is resealed and clipped onto the upper end of the water inlet pipe 16 to prevent heat or cold from entering the heat-insulating shell 10. The liquid is dissipated through the water inlet pipe 16, which also prevents external dust and impurities from entering the insulation shell 10 and contaminating the food. When drainage is required, the sealing cover 13 can be opened. Since the sealing cover 13 is sealed and snapped into the drain hole 11 by the plug 12, and the upper end of the sealing cover 13 is provided with an annular sealing gasket 14, the annular sealing gasket 14 cooperates with the annular sealing groove 15 provided in the middle of the lower end of the insulation shell 10 to achieve a seal. After the sealing cover 13 is opened, the plug 12 is disengaged from the drain hole 11, and the liquid in the shell can be smoothly discharged through the drain hole 11. After drainage is completed, the plug 12 is re-snapped into the drain hole 11, and the annular sealing gasket 14 is tightly fitted with the annular sealing groove 15 to achieve a seal of the drain hole 11, ensuring the heat preservation effect of the insulation shell 10 and improving the protective performance and practicality of the packaging box.

[0034] It should be noted that this utility model is a food plastic packaging box with good protective performance. During use, food dividers 8 are first placed on two placement plates 7 inside the protective shell 1 to separate the internal space for categorized food storage, preventing squeezing and cross-contamination of odors, and improving cleanliness and practicality. Then, the food is categorized and placed into the separated space, followed by sealing. The sealing mechanism 4 is lifted, and the cover plate 41 is placed on the protective shell 1 and the support plate 2, allowing the U-shaped sealing gasket 42 at the lower end of the cover plate 41 to embed into the U-shaped sealing groove 3, initially sealing against impurities. The cover plate 41 is pushed so that the insert block 43 is inserted into the slot 45 of the fixing seat 40 for positioning. The insert block 43 presses against the limiting rod 48, causing the guide plate 47 to move to the right and compress the spring 49. When the limiting hole 44 aligns with the limiting rod 48, the spring 49 returns to its original position, pushing the guide plate 47 so that the limiting rod 48 is engaged in the limiting hole 44, completing a tight seal. Extended shelf life of food; after sealing, food can be viewed through the viewing window 5 without opening the lid; handle 6 facilitates carrying; during use, the insulated shell 10 maintains a stable internal temperature; when enhanced insulation or cold preservation is needed, open the sealing plug 17 and inject hot water through the water inlet pipe 16, then tighten the sealing plug 17 to prevent heat loss and contamination; when there is condensation inside the shell or the medium needs to be changed, open the sealing cover 13 to allow the plug 12 to disengage from the drain hole 11 to drain water, then reset the plug 12 and make the annular sealing gasket 14 fit into the annular sealing groove 15 to ensure the insulation effect; when taking out food, pull the lever 46 to move the guide plate 47 to the right, causing the limiting rod 48 to disengage from the limiting hole 44, and pull out the insert 43 to open the cover plate 41. The operation is convenient, and the components work together to achieve functions such as classified storage, convenient sealing, and efficient temperature control, ensuring food hygiene and safety and improving protection and practicality.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A food plastic packaging box with good protective performance, comprising a protective outer shell (1), characterized in that: The protective shell (1) has a support plate (2) on the upper part of its outer surface. Both the protective shell (1) and the support plate (2) have a spiral sealing groove (3) at their upper ends. The upper ends of the two spiral sealing grooves (3) are provided with a sealing mechanism (4). The upper middle part of the sealing mechanism (4) has a viewing window (5). The upper end of the sealing mechanism (4) has a handle (6). The lower left and lower right sides of the inner surface of the protective shell (1) are provided with a placement plate (7). The upper ends of the two placement plates (7) are provided with a food partition (8). The sealing mechanism (4) includes a fixed seat (40) and a cover plate (41). The lower end of the cover plate (41) is provided with two U-shaped sealing gaskets (42). The front middle of the cover plate (41) is fixedly installed with a plug (43) through a connecting block. The middle right end of the plug (43) is provided with a limit hole (44). The upper left end of the fixed seat (40) is provided with a slot (45). The middle right end of the fixed seat (40) is movably installed with a pull rod (46). The left end of the pull rod (46) is fixedly installed with a guide plate (47). The guide plate (47) is movably installed on the right side inside the fixed seat (40) through an inner groove. The middle left end of the guide plate (47) is fixedly installed with a limit rod (48). The outer surface of the pull rod (46) is movably sleeved with a spring (49).

2. The food plastic packaging box with good protective performance according to claim 1, characterized in that: The left and right sides of the outer surface of the spring (49) are respectively fixedly connected to the guide plate (47) and the inner right side of the fixing seat (40).

3. A food plastic packaging box with good protective performance according to claim 1, characterized in that: The insert (43) is movably inserted into the slot (45).

4. A food plastic packaging box with good protective performance according to claim 1, characterized in that: The limiting rod (48) is movably engaged inside the limiting hole (44) by a pull rod (46), a guide plate (47) and a spring (49).

5. A food plastic packaging box with good protective performance according to claim 1, characterized in that: The protective shell (1) includes an insulation shell (10). The lower middle part of the insulation shell (10) is provided with a drain hole (11) and an annular sealing groove (15). The drain hole (11) is sealed with a plug (12). The lower end of the plug (12) is fixedly installed with a sealing cover (13). The upper end of the sealing cover (13) is provided with an annular sealing gasket (14). The lower right part of the insulation shell (10) is inserted and fixedly installed with a water inlet pipe (16). The upper end of the water inlet pipe (16) is sealed with a sealing plug (17).

6. A food plastic packaging box with good protective performance according to claim 5, characterized in that: The interior of the water inlet pipe (16) is connected to the interior of the insulation shell (10), and the sealing cover (13) is sealed and snapped into the interior of the drain hole (11) and the annular sealing groove (15) by the plug (12) and the sealing cover (13).

Images