A food packaging structure for achieving leak-proof exhaust

Abstract

The present invention relates to the field of packaging structures, and in particular to a catering packaging structure for achieving leak-proof exhaust, comprising exhaust components, including a plastic bowl, a bowl cover arranged on the plastic bowl, a mounting ring arranged on the bowl cover, a cover plate arranged on the mounting ring, a first air vent arranged on the cover plate, a mounting cylinder with an open lower end arranged on the outer side of the mounting ring, and a second air vent arranged on the side wall of the mounting cylinder, wherein the first air vent and the second air vent are staggered; leak-proof components, including a first flow guide component arranged on the cover plate, a second flow guide component arranged on the cover plate, a reflux component arranged on the cover plate, a one-way component arranged on the reflux component, a limit component arranged on the mounting cylinder, and a regulating component arranged on the mounting cylinder. The device of the present invention can prevent leakage while exhausting, can adjust the exhaust speed, and achieve large-opening exhaust.

Description

Technical Field

[0001] The invention relates to the field of packaging structures, in particular to a catering packaging structure capable of achieving leakage-proof exhaust. Background Art

[0002] As the catering industry prospers today, the types of catering are becoming increasingly diverse, and their packaging is also varied. Common types of catering include liquid catering and staple food. Among liquid catering, there are many foods with higher temperatures that need to be delivered. Since this type of food produces a lot of steam, in order to avoid packaging deformation, special packaging bowls or boxes are needed.

[0003] During use, a common method is to punch holes in the lid of the packaging bowl for exhaust. In actual transportation, the holes are small, and the steam accumulates in the bowl, which increases the pressure and is prone to packaging deformation. If the holes are larger, during delivery, multiple packages are placed in an insulated box, which is prone to tilt due to squeezing, causing liquid leakage. Therefore, a catering packaging structure that can be leak-proof and exhaust has become a social need. Summary of the invention

[0004] In view of the above or existing problems in the prior art that it is difficult to achieve a good balance between exhaust and leakage prevention when conveying hot fluids in existing packaging bowls or packaging boxes, the present invention is proposed.

[0005] It is therefore an object of the present invention to provide an electrical component for a rotary transformer.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: comprising an exhaust component, including a plastic bowl, a bowl cover arranged on the plastic bowl, a mounting ring arranged on the bowl cover, a cover plate arranged on the mounting ring, a first air port arranged on the cover plate, a mounting cylinder with an open lower end arranged on the outer side of the mounting ring, and a second air port arranged on the side wall of the mounting cylinder, wherein the first air port and the second air port are staggered; a leakage-proof component, comprising a first flow guide component arranged on the cover plate, a second flow guide component arranged on the cover plate, a reflux component arranged on the cover plate, a one-way component arranged on the reflux component, a limit component arranged on the mounting cylinder, and a regulating component arranged on the mounting cylinder; a blocking component, comprising a guide component arranged on the cover plate and a pushing component arranged in the guide component.

[0007] As a preferred solution of the catering packaging structure for leak-proof exhaust of the present invention, the first flow guide component includes two first arc-shaped plates fixedly connected to the two ends of the first air vent, the front and rear ends of the two first arc-shaped plates are fixedly connected to the second arc-shaped plates, and the side walls of the two first arc-shaped plates are provided with a first inclined surface.

[0008] As a preferred solution of the catering packaging structure for leak-proof exhaust of the present invention, the second flow guide component includes a third curved plate fixedly connected to the cover plate, a blocking block is fixedly connected to the third curved plate, a second inclined surface is provided on the blocking block, a third inclined surface is provided on the right end side wall of the first curved plate, the second inclined surface, the third inclined surface and the cover plate are combined into a liquid storage area, and the second air vent is arranged at an end close to the third curved plate.

[0009] As a preferred solution of the catering packaging structure for leak-proof exhaust of the present invention, the reflux component includes a fourth inclined surface arranged on the cover plate, a plurality of liquid return holes are arranged at the left end of the fourth inclined surface, and reference lines are arranged on the side wall and the inner wall of the plastic bowl.

[0010] As a preferred solution of the leak-proof and vent-proof catering packaging structure of the present invention, the liquid level line corresponding to the reference line is located at the lower side of the liquid return hole when the plastic bowl is placed flat.

[0011] As a preferred solution of the catering packaging structure for realizing leakage-proof exhaust of the present invention, the one-way component includes a circular groove arranged in the liquid return hole, the diameter of the circular groove is larger than the diameter of the liquid return hole, a sealing ball is arranged in the circular groove, an elastic line is fixedly connected in the liquid return hole, and the elastic line is fixedly connected to the sealing ball.

[0012] As a preferred solution of the catering packaging structure for leak-proof exhaust of the present invention, the limiting component includes an extension block fixedly connected to the side wall of the mounting ring, the extension block is provided with an arc edge, the mounting tube is fixedly connected to an elastic block cooperating with the extension block, and the inner wall of the mounting tube is provided with a sealing ring cooperating with the first arc plate.

[0013] As a preferred solution of the catering packaging structure for leak-proof exhaust of the present invention, the regulating component includes a mounting groove arranged in the mounting cylinder, an arc-shaped sealing block cooperating with the second air permeable port is arranged in the mounting groove, a connecting rod is fixedly connected to the arc-shaped sealing block, a circular opening is arranged on the mounting cylinder, a cylinder is passed through the circular opening and is sealed and rotatably connected thereto, the connecting rod is fixedly connected to the cylinder, and a shift block is fixedly connected to the cylinder.

[0014] As a preferred solution of the leak-proof and vent-proof catering packaging structure of the present invention, the guide assembly includes a drainage plate arranged on the mounting tube, a cavity is arranged in the drainage plate, and liquid inlets are arranged at the upper and lower ends of the cavity.

[0015] As a preferred solution of the catering packaging structure for leak-proof and exhaust-proof of the present invention, the pushing component includes an extension groove arranged on the inner wall of the cavity, and water-absorbing and expanding cotton is provided in the extension groove and the installation groove. A rotating block that cooperates with the water-absorbing and expanding cotton is fixedly connected to the cylinder, and a plurality of liquid inlet holes are provided on the side wall of the installation groove.

[0016] The catering packaging structure of the present invention has the beneficial effects of achieving leak-proof exhaust: exhaust can be achieved by setting the first air hole and the second air hole, and the size of the second air hole can be controlled, thereby controlling the exhaust speed, thereby preventing hot steam from accumulating in the plastic bowl and causing deformation of the plastic bowl. At the same time, by setting a leak-proof component, leakage of liquid in the plastic bowl can be prevented during the transportation process, and even if the plastic bowl topples over, leakage can be prevented. In the case of a large opening, the second air hole can be closed in time when leakage occurs, and leakage of liquid can be completely avoided, thereby solving the problem that it is difficult to strike a good balance between exhaust and leak-proofing when transporting hotter fluids in existing packaging bowls or packaging boxes, and achieving the effect of preventing liquid or fluid leakage during exhaust, adjustable exhaust speed, and the second air hole can be set larger. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 Schematic diagram of the external structure of a catering packaging structure for achieving leak-proof exhaust.

[0019] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of .

[0020] Figure 3 A schematic diagram of the cross-sectional structure of the leak-proof components of a catering packaging structure for achieving leak-proof exhaust.

[0021] Figure 4 A schematic diagram of the cross-sectional structure of a bowl cover for a catering packaging structure that is leak-proof and vented.

[0022] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at B.

[0023] Figure 6 A schematic cross-sectional view of the barrier component of a catering packaging structure for achieving leak-proof and vented food.

[0024] Figure 7A schematic diagram of the cross-sectional structure of the installation tube of a catering packaging structure for achieving leak-proof exhaust.

[0025] In the figure: 100, exhaust component; 101, plastic bowl; 102, bowl cover; 103, installation ring; 104, cover plate; 105, first air vent; 106, installation tube; 107, second air vent; 200, leak-proof component; 201, first flow guide component; 201a, first arc plate; 201b, second arc plate; 201c, first inclined plane; 202, second flow guide component; 202a, third arc plate; 202b, blocking block; 202c, second inclined plane; 202d, third inclined plane; 202e, liquid storage area; 203, reflux component; 203a, fourth inclined plane; 203b, liquid return hole; 203c, reference line; 204, one-way Assembly; 204a, circular groove; 204b, sealing ball; 204c, elastic line; 205, limit assembly; 205a, extension block; 205b, arc edge; 205c, elastic block; 205d, sealing ring; 206, regulating assembly; 206a, mounting groove; 206b, arc-shaped sealing block; 206c, connecting rod; 206d, circular mouth; 206e, cylinder; 206f, dial block; 300, blocking component; 301, guiding assembly; 301a, drainage plate; 301b, cavity; 301c, liquid inlet; 302, pushing assembly; 302a, extension groove; 302b, water-absorbing and expanding cotton; 302c, rotating block; 302d, liquid inlet hole. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] Example 1, reference Figure 1 to Figure 7, which is the first embodiment of the present invention, and provides a food packaging structure for achieving leak-proof exhaust, which can achieve the effect of preventing liquid from leaking out during the exhaust process, and includes an exhaust component 100, including a plastic bowl 101, a bowl cover 102 arranged on the plastic bowl 101, a mounting ring 103 arranged on the bowl cover 102, a cover plate 104 arranged on the mounting ring 103, a first air permeable port 105 arranged on the cover plate 104, an installation tube 106 with an open lower end arranged outside the installation ring 103, a second air permeable port 107 arranged on the side wall of the installation tube 106, a first air permeable port 105 arranged on the cover plate 104, a first air permeable port 106 arranged on the side wall of the installation tube 106, and a second air permeable port 107 arranged on the side wall of the first air permeable port 105. The air port 105 and the second air port 107 are staggered, and the leakage-proof component 200 includes a first flow guide component 201 arranged on the cover plate 104, a second flow guide component 202 arranged on the cover plate 104, a return flow component 203 arranged on the cover plate 104, a one-way component 204 arranged on the return flow component 203, a limit component 205 arranged on the mounting tube 106, and a regulating component 206 arranged on the mounting tube 106; the blocking component 300 includes a guiding component 301 arranged on the cover plate 104, and a pushing component 302 arranged in the guiding component 301.

[0028] Specifically, a sealing ring is provided between the plastic bowl 101 and the bowl cover 102, and the bowl cover 102 and the plastic bowl 101 can be engaged with each other to achieve the limitation between the plastic bowl 101 and the bowl cover 102. This is the prior art and will not be elaborated here. The first air port 105 and the second air port 107 are staggered so that when liquid is splashed, it will not be directly sprayed out from the first air port 105. The second air port 107 is provided on the right side wall of the mounting tube 106.

[0029] Furthermore, the first flow guide component 201 includes two first curved plates 201a fixedly connected at both ends of the first air vent 105, the front and rear ends of the two first curved plates 201a are fixedly connected to the second curved plates 201b, and the side walls of the two first curved plates 201a are provided with first inclined surfaces 201c; the second flow guide component 202 includes a third curved plate 202a fixedly connected to the cover plate 104, the third curved plate 202a is fixedly connected to a blocking block 202b, the blocking block 202b is provided with a second inclined surface 202c, the side wall of the first curved plate 201a at the right end is provided with a third inclined surface 202d, the second inclined surface 202c, the third inclined surface 202d, and the cover plate 104 are combined into a liquid storage area 202e, and the second air vent 107 is arranged at one end close to the third curved plate 202a.

[0030] Among them, a first inclined surface 201c is set on the first curved plate 201a, so that when the liquid falls on the first curved plate 201a, it can automatically slide back into the plastic bowl 101. The second inclined surface 202c, the third inclined surface 202d, and the cover plate 104 are combined into a liquid storage area 202e to store the liquid so that the liquid can slowly flow back into the plastic bowl 101. The blocking block 202b here is also curved, and the outer wall is against the inner wall of the third curved plate 202a.

[0031] Preferably, the reflux component 203 includes a fourth inclined surface 203a disposed on the cover plate 104, a plurality of liquid return holes 203b are disposed at the left end of the fourth inclined surface 203a, and reference lines 203c are disposed on the side wall and the inner wall of the plastic bowl 101; the liquid level line corresponding to the liquid volume of the reference line 203c is located at the lower side of the liquid return hole 203b when the plastic bowl 101 is placed flat; the one-way component 204 includes a circular groove 204a disposed in the liquid return hole 203b, the diameter of the circular groove 204a is larger than the diameter of the liquid return hole 203b, and the circular groove 204a is larger than the diameter of the liquid return hole 203b. A sealing ball 204b is provided in the groove 204a, and an elastic line 204c is fixedly connected in the return liquid hole 203b, and the elastic line 204c is fixedly connected to the sealing ball 204b; the limiting component 205 includes an extension block 205a fixedly connected to the side wall of the mounting ring 103, and an arc edge 205b is provided on the extension block 205a, and an elastic block 205c cooperating with the extension block 205a is fixedly connected to the mounting tube 106, and a sealing ring 205d cooperating with the first arc plate 201a is provided on the inner wall of the mounting tube 106.

[0032] It should be noted that the setting of the fourth inclined surface 203a can make the liquid in the liquid storage interval 202e flow to the liquid return hole 203b, thereby avoiding the accumulation of liquid in the liquid storage interval 202e. The pulling force provided by the elastic line 204c here is equal to the gravity of the sealing ball 204b, so that as long as there is liquid in the liquid return hole 203b, the sealing ball 204b can move slightly downward. At this time, the liquid can flow from the gap between the sealing ball 204b and the inner wall of the circular groove 204a to the plastic bowl 101. The inner wall of the sealing ring 205d here is inclined, and the inclined edge cooperates with the first arc plate 201a, thereby avoiding the accumulation of liquid on the side wall of the sealing ring 205d.

[0033] When in use, firstly, fill the plastic bowl 101 with liquid. When filling, refer to the reference line 203c and do not exceed the reference line 203c. The inner and outer walls are both provided with the reference line 203c for easy observation. After the liquid is filled into the plastic bowl 101, cover the bowl cover 102. At this time, a passage is formed between the first air vent 105, the gap between the mounting cylinder 106 and the cover plate 104, and the second air vent 107 to exhaust the liquid in the plastic bowl 101. At this time, the elastic block 205c cooperates with the extension block 205a to limit the mounting cylinder 106, and the sealing ring 205d is provided to seal between the mounting cylinder 106 and the mounting ring 103. The arc edge 205 b is set to avoid the phenomenon of getting stuck when the elastic block 205c and the extension block 205a cooperate. During transportation, when the plastic bowl 101 is placed flat, that is, the mouth of the plastic bowl 101 is facing upward, if it is bumped and liquid splashes, the splashed liquid flies out from the first air vent 105. Since the first air vent 105 is misaligned with the second air vent 107, the liquid flying out of the first air vent 105 is blocked by the installation cylinder 106 and will not leak out of the installation cylinder 106. When the plastic bowl 101 is tilted, there are multiple situations. First, the plastic bowl 101 tilts toward the first air vent 105, that is, the mouth of the plastic bowl 101 is facing left. At this time, the liquid flows along the first air vent 105. 05 outflow, because the first air vent 105 and the second air vent 107 are misaligned, and the second air vent 107 is arranged on the right side wall of the mounting tube 106, the liquid is concentrated in the plastic bowl 101, the liquid storage area 202e, the mounting tube 106 and the cover plate 104, and the second air vent 107 here is arranged in the middle of the right end of the mounting tube 106, so that the liquid will not flow into the second air vent 107, and then will not cause the outflow of liquid (which can also be a fluid), and at this time, the liquid pushes the sealing ball 204b to move from the circular groove 204a direction, so that the sealing ball 204b presses against the liquid return hole 203b, so that the liquid in the plastic bowl 101 cannot enter into through the liquid return hole 203b In the liquid storage area 202e, when the bowl is put back in the right position, that is, when the mouth of the plastic bowl 101 faces upward, a part of the liquid will flow out through the first vent 105, and the other part of the liquid will move along the second inclined surface 202c and the third inclined surface 202d to the liquid storage area 202e, and then enter the liquid return hole 203b after being guided by the fourth inclined surface 203a. At this time, the weight of the liquid causes the sealing ball 204b to move downward. Since the diameter of the circular groove 204a is larger than the diameter of the liquid return hole 203b, the downward movement of the sealing ball 204b will generate a gap with the inner wall of the circular groove 204a. At this time, the liquid will flow back into the plastic bowl 101 from the gap, and will not cause liquid leakage;

[0034] When the plastic bowl 101 is tilted toward the second air vent 107, that is, when the mouth of the plastic bowl 101 faces right, since the liquid level line corresponding to the reference line 203c is at the lower side of the liquid return hole 203b when the plastic bowl 101 is laid flat, it will not touch the first air vent 105 at all, nor will it flood the liquid return hole 203b, so there will be no leakage. When the mouth of the plastic bowl 101 faces backward (the same applies when it faces forward), part of the liquid is blocked by the cover plate 104, and the other part of the liquid enters the space between the mounting tube 106 and the cover plate 104 through the first air vent 105, but still cannot touch the second air vent 107, and still will not cause liquid leakage. When laid flat, it flows toward the liquid return hole 203b along the second inclined surface 202c, the third inclined surface 202d and the fourth inclined surface 203a, and finally returns to the plastic bowl 101.

[0035] In summary, by providing the leak-proof component 200, while achieving liquid exhaust, liquid leakage will not occur regardless of whether the plastic bowl 101 is laid flat or tilted. On the one hand, deformation of the plastic bowl 101 due to air pressure is prevented, and on the other hand, liquid leakage due to tilting during transportation is prevented.

[0036] Example 2, reference Figure 2 to Figure 7 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a regulating component 206 of a catering packaging structure for realizing leak-proof exhaust, and solves the problem of how to control the exhaust speed. It includes a regulating component 206, including a mounting groove 206a arranged in the mounting cylinder 106, an arc-shaped sealing block 206b cooperating with the second air permeable port 107 is arranged in the mounting groove 206a, a connecting rod 206c is fixedly connected to the arc-shaped sealing block 206b, a circular opening 206d is arranged on the mounting cylinder 106, a cylinder 206e passes through the circular opening 206d and is sealed and rotatably connected, the connecting rod 206c is fixedly connected to the cylinder 206e, and a shifting block 206f is fixedly connected to the cylinder 206e.

[0037] Specifically, the cross section of the mounting groove 206a is L-shaped, the arc-shaped sealing block 206b can close the second air vent 107, and the shifting block 206f protrudes to the upper side of the mounting tube 106, thereby facilitating the shifting of the shifting block 206f and the shifting of the cylinder 206e.

[0038] During use, when it is necessary to control the exhaust speed to prevent the liquid from cooling down quickly, it is only necessary to turn the block 206f to rotate the cylinder 206e, thereby driving the connecting rod 206c to rotate, so that the arc-shaped sealing block 206b moves, and the opening size of the first air vent 105 is adjusted to achieve control of the exhaust efficiency.

[0039] In summary, by setting the regulating component 206, the size of the second air vent 107 can be controlled, so that the exhaust speed can be adjusted. Different exhaust speeds can be adjusted according to different liquids to avoid the liquid from cooling down quickly, thereby increasing its scope of use.

[0040] Example 3, reference Figure 1 to Figure 7 , which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides a blocking component 300 of a catering packaging structure for realizing leak-proof exhaust, and solves the problem of how to ensure that leakage can be prevented when the second air vent 107 is wide open. Its guiding component 301 includes a drainage plate 301a arranged on the mounting tube 106, and a cavity 301b is arranged in the drainage plate 301a. The upper and lower ends of the cavity 301b are provided with liquid inlets 301c. The pushing component 302 includes an extension groove 302a arranged on the inner wall of the cavity 301b, and water-absorbing and expanding cotton 302b is provided in the extension groove 302a and the mounting groove 206a. A rotating block 302c that cooperates with the water-absorbing and expanding cotton 302b is fixedly connected to the cylinder 206e, and a plurality of liquid inlet holes 302d are provided on the side wall of the mounting groove 206a.

[0041] Specifically, the water-absorbing and swelling cotton 302b can expand and generate thrust after absorbing water. The expansion force here is sufficient (the material and volume are selected according to the required thrust, and the ability to push the shift block 206f is taken as the standard here, and is not limited here), ensuring that the shift block 206f can be pushed to move. The water-absorbing and swelling cotton 302b here absorbs water and expands according to the existing technology, which will not be elaborated here, and all the materials used above are non-toxic materials, which are guaranteed not to affect the health of the user.

[0042] When in use, first, the second air vent 107 is opened, and the shifting block 206f squeezes the water-absorbing and expanding cotton 302b, and the arc-shaped sealing block 206b does not enter the second air vent 107. The second air vent 107 has a larger opening, which is convenient for ventilation. When the mouth of the plastic bowl 101 faces backward, liquid is likely to flow out. In this process, when the liquid is about to approach the second air vent 107, the liquid will soak into the water-absorbing and expanding cotton 302b, causing the water-absorbing and expanding cotton 302b to expand, thereby Providing thrust, pushing the rotating block 302c to deflect, pushing the cylinder 206e to deflect, thereby deflecting the connecting rod 206c, driving the arc-shaped sealing block 206b to move into the second air vent 107, achieving the closure of the second air vent 107 to prevent liquid from flowing out. Similarly, when the mouth of the plastic bowl 101 faces forward, the water-absorbing and expandable cotton 302b in the installation groove 206a is similarly configured to push the arc-shaped sealing block 206b from different directions to ensure that no liquid leakage occurs.

[0043] In summary, by setting the blocking component 300, when the second air hole 107 is set larger for convenient ventilation, if the plastic bowl 101 falls over, the liquid in the plastic bowl 101 will soak into the water-absorbing and swelling cotton 302b, causing the water-absorbing and swelling cotton 302b to expand and push the arc-shaped sealing block 206b through transmission to close the second air hole 107, thereby avoiding liquid leakage even in the case of a large opening.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A food packaging structure that achieves leak-proof exhaust, characterized in that: include, An exhaust component (100) comprises a plastic bowl (101), a bowl cover (102) arranged on the plastic bowl (101), a mounting ring (103) arranged on the bowl cover (102), a cover plate (104) arranged on the mounting ring (103), a first air vent (105) arranged on the cover plate (104), a mounting tube (106) with an open lower end arranged outside the mounting ring (103), and a second air vent (107) arranged on a side wall of the mounting tube (106), wherein the first air vent (105) and the second air vent (107) are arranged in an offset manner; The anti-leakage component (200) comprises a first flow guide component (201) arranged on the cover plate (104), the first flow guide component (201) comprising two first curved plates (201a) fixedly connected to two ends of the first air vent (105), the front and rear ends of the two first curved plates (201a) being fixedly connected to second curved plates (201b), and the side walls of the two first curved plates (201a) being provided with first inclined surfaces (201c); a second flow guide component (202) disposed on the cover plate (104), the second flow guide component (202) comprising a third curved plate (202a) fixedly connected to the cover plate (104), a blocking block (202b) fixedly connected to the third curved plate (202a), a second inclined surface (202c) being provided on the blocking block (202b), a third inclined surface (202d) being provided on the right side wall of the first curved plate (201a), the second inclined surface (202c), the third inclined surface (202d) and the cover plate (104) being combined to form a liquid storage area (202e), and the second air vent (107) being provided at one end close to the third curved plate (202a); a reflux component (203) disposed on the cover plate (104), the reflux component (203) comprising a fourth inclined surface (203a) disposed on the cover plate (104), a plurality of liquid return holes (203b) being provided at the left end of the fourth inclined surface (203a), and reference lines (203c) being provided on the side wall and the inner wall of the plastic bowl (101); a one-way component (204) arranged on the reflux component (203), the one-way component (204) comprising a circular groove (204a) arranged in the liquid return hole (203b), the diameter of the circular groove (204a) being larger than the diameter of the liquid return hole (203b), a sealing ball (204b) being arranged in the circular groove (204a), an elastic line (204c) being fixedly connected in the liquid return hole (203b), the elastic line (204c) being fixedly connected to the sealing ball (204b), and a liquid level line corresponding to the amount of liquid in the reference line (203c) being located at the lower side of the liquid return hole (203b) when the plastic bowl (101) is placed flat; a limiting assembly (205) disposed on the mounting tube (106), the limiting assembly (205) comprising an extension block (205a) fixedly connected to a side wall of the mounting ring (103), the extension block (205a) being provided with an arc edge (205b), an elastic block (205c) matched with the extension block (205a) being fixedly connected to the mounting tube (106), and a sealing ring (205d) matched with the first arc plate (201a) being provided on the inner wall of the mounting tube (106); and a regulating component (206) arranged on the mounting tube (106), the regulating component (206) comprising a mounting groove (206a) arranged in the mounting tube (106), an arc-shaped sealing block (206b) cooperating with the second air permeable port (107) being arranged in the mounting groove (206a), a connecting rod (206c) being fixedly connected to the arc-shaped sealing block (206b), a circular opening (206d) being arranged on the mounting tube (106), a cylinder (206e) penetrating through the circular opening (206d) and being sealingly rotatably connected thereto, the connecting rod (206c) being fixedly connected to the cylinder (206e), and a shifting block (206f) being fixedly connected to the cylinder (206e); The blocking component (300) comprises a guiding component (301) arranged on the cover plate (104) and a pushing component (302) arranged inside the guiding component (301).

2. The food packaging structure for achieving leak-proof exhaust as claimed in claim 1, characterized in that: The guide assembly (301) comprises a drainage disc (301a) arranged on the mounting tube (106), a cavity (301b) being provided in the drainage disc (301a), and liquid inlets (301c) being provided at the upper and lower ends of the cavity (301b).

3. The food packaging structure for achieving leak-proof exhaust as claimed in claim 2, characterized in that: The pushing component (302) comprises an extension groove (302a) arranged on the inner wall of the cavity (301b), water-absorbing and swelling cotton (302b) are both arranged in the extension groove (302a) and the installation groove (206a), a rotating block (302c) cooperating with the water-absorbing and swelling cotton (302b) is fixedly connected to the cylinder (206e), and a plurality of liquid inlet holes (302d) are arranged on the side wall of the installation groove (206a).

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