CN215795268U

CN215795268U - Strawberry packaging box with fresh-keeping function

Info

Publication number: CN215795268U
Application number: CN202122439612.9U
Authority: CN
Inventors: 袁卫明
Original assignee: Suzhou Polytechnic Institute of Agriculture
Current assignee: Suzhou Polytechnic Institute of Agriculture
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2022-02-11
Anticipated expiration: 2031-10-11

Abstract

The utility model discloses a strawberry packaging box with a fresh-keeping function, which comprises a box body and a box cover detachably connected with the box body, wherein a placing plate is detachably connected in the box body, and a moisture absorption plate is arranged between the placing plate and the box body; two side edges of any opposite edges of the box body are respectively provided with an air interchanger; a locking device is arranged in the box cover and is detachably connected with the box body; the locking device comprises a locking hole arranged at the top end of the box cover, and a locking bolt with a wedge-shaped bottom end is in threaded connection in the locking hole; through holes perpendicular to the side edge of the box body are formed in the periphery of the bottom end of the locking hole at equal intervals in the circumferential direction, and locking assemblies are arranged in the through holes; the bottom of the locking bolt abuts against the end of the locking assembly. By arranging the sealed environment and the gas replacement technology, the fresh-keeping period of the strawberries is greatly prolonged, the probability of mechanical damage of the strawberries is reduced, the contact between the strawberries and water vapor is reduced, and the storage and transportation cost of the strawberries is reduced.

Description

Strawberry packaging box with fresh-keeping function

Technical Field

The utility model relates to the technical field of food packaging, in particular to a strawberry packaging box with a fresh-keeping function.

Background

The strawberry is heart-shaped in appearance, delicious, red and tender, juicy in pulp and rich in nutritive value, and is praised as 'fruit queen'. Strawberries belong to berry fruits and vegetables, and the pulp of strawberries is soft and can be quickly rotten after being collided or wetted; meanwhile, the strawberries are fresh subtropical fruits, the preservation period is short, the production area is concentrated, mechanical damage and microorganism infection are easy to occur in the transportation and storage processes after the strawberries are picked, the fruits are softened and rotted quickly, most strawberries are rotted and deteriorated and cannot be eaten until the strawberries are sold, the shelf life of the strawberries is seriously influenced, and the loss of merchants is large. Meanwhile, consumers are easy to cause discomfort due to the fact that the strawberries are not fresh.

Traditional strawberry packing carton generally is the duroplasts packing carton, and easy and duroplasts box body of strawberry and take place the extrusion and warp between the adjacent strawberry, cause the damage of strawberry epidermis, shorten the strawberry and guarantee quality fresh-keeping period, can't solve fresh-keeping and the antibacterial problem of strawberry in transportation and storage effectively. The existing high-end strawberry packaging box has the effects of single-fruit isolation, fixed heat preservation and the like, but is high in cost, and meanwhile, the deterioration speed of strawberries cannot be reduced, so that the transportation and storage difficulty of strawberries is high. Therefore, a strawberry packaging box with low cost and good preservation effect is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a strawberry packaging box with a fresh-keeping function, and aims to solve the problems in the prior art.

In order to achieve the purpose, the utility model provides the following scheme: the utility model provides a strawberry packaging box with a fresh-keeping function, which comprises

The box body is used for containing strawberries; a placing plate is detachably connected in the box body, and a moisture absorption plate is arranged between the placing plate and the box body; two side edges of any opposite edges of the box body are respectively provided with an air interchanger, and the air interchangers are communicated with an inner cavity of the box body;

the box cover is detachably connected with the top end of the box body;

the locking device comprises a locking hole formed in the top end of the box cover, and a locking bolt with a wedge-shaped bottom end is in threaded connection in the locking hole; through holes perpendicular to the side edge of the box body are formed in the periphery of the bottom end of the locking hole at equal intervals in the circumferential direction, and locking assemblies are arranged in the through holes; the bottom end of the locking bolt abuts against the end of the locking assembly.

Preferably, the two ventilation devices are arranged symmetrically with respect to the center of the box body.

Preferably, the ventilation device comprises a ventilation hole formed in the side wall of the box body, the ventilation hole is located at one end of the inner cavity of the box body, a sealing plate is detachably connected to the end, facing the outer end of the box body, of the sealing plate, a ventilation connecting rod is fixedly connected to the end, facing the outer side of the box body, of the ventilation connecting rod, a jacking component is arranged at the tail end of the ventilation connecting rod, and the jacking component is arranged in the ventilation hole.

Preferably, the ejection assembly comprises a ventilation sliding plate fixedly connected with the tail end of the ventilation connecting rod, and the ventilation sliding plate is connected with the ventilation hole in a sliding manner; a ventilation support plate is arranged between the sealing plate and the ventilation sliding plate, the ventilation connecting rod penetrates through the ventilation support plate and is in sliding connection with the ventilation support plate, and the ventilation support plate is fixedly connected with the inner wall of the ventilation hole; a first spring is fixedly connected between the ventilation supporting plate and the ventilation sliding plate, and the first spring is sleeved on the ventilation connecting rod; the ventilation sliding plate and the ventilation supporting plate are both provided with a plurality of communicating holes in a penetrating way.

Preferably, the sealing plate comprises a plate body, one end of the plate body facing the ventilation hole is fixedly connected with a sealing lug, and the sealing lug is matched with the ventilation hole; the outer rigid coupling of sealed lug has first sealing ring, the lateral wall of box body set up with the first seal groove of first sealing ring looks adaptation, the bottom rigid coupling of first seal groove has first sealing washer.

Preferably, the locking assembly comprises a locking push block abutted against the bottom end of the locking bolt, and one end of the locking push block, which is far away from the locking bolt, is fixedly connected with a locking connecting rod; the tail end of the locking connecting rod is fixedly connected with a locking inserting plate; a locking groove matched with the locking inserting plate is formed in the side wall of the box body, and the locking inserting plate is inserted into the locking groove; and the locking connecting rod is provided with a rebound assembly.

Preferably, the rebound assembly comprises a rebound hole arranged in parallel with the locking hole, two ends of the rebound hole are respectively communicated with the locking hole, and the locking connecting rod penetrates through the rebound hole; the rebound hole is connected with a rebound sheet in a sliding manner, and the locking connecting rod penetrates through the rebound sheet and is fixedly connected with the same; a second spring is fixedly connected between the rebound sheet and one end of the rebound hole facing the locking inserting plate; the second spring is sleeved on the locking connecting rod.

Preferably, a sealing gasket is fixedly connected to the bottom end of the locking groove, and the sealing gasket abuts against the locking insertion plate.

Preferably, a second sealing ring is fixedly connected to the top end of the box body, and a second sealing groove matched with the second sealing ring is formed in the bottom end of the box cover; and a second sealing ring is fixedly connected to the bottom end of the second sealing groove.

The utility model discloses the following technical effects: the utility model discloses a strawberry packaging box with a fresh-keeping function, wherein a sealed environment is formed in the box body through a locking assembly arranged in the box cover, and filling gas in the box body is replaced through two air interchangers, so that the oxidation respiration speed of strawberries in the box body is reduced, and the fresh-keeping period of the strawberries is prolonged; the board is placed in the box body to the setting, fixes the strawberry in the box body, prevents that the mechanical damage is caused in the transportation between the strawberry or strawberry and box body collision, places and sets up the hydroscopic plate between board and the box body inner chamber, absorbs the aqueous vapor that the strawberry gived off, prevents that the strawberry surface from being stained with water and corruption with higher speed, has prolonged the fresh-keeping period of strawberry greatly. By arranging the sealed environment and the gas replacement technology, the fresh-keeping period of the strawberries is greatly prolonged, the probability of mechanical damage of the strawberries is reduced, the contact between the strawberries and water vapor is reduced, and the storage and transportation cost of the strawberries is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a three-dimensional view of a strawberry package box with a fresh keeping function according to the present invention;

FIG. 2 is a three-dimensional view of a cassette of the present invention;

FIG. 3 is a schematic structural diagram of the cartridge of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is a schematic view of the lid of the present invention;

FIG. 6 is a schematic view of the locking device of the present invention;

wherein, 1, a box body; 2. a box cover; 3. a moisture absorption plate; 4. a ventilation device; 5. locking the hole; 6. a locking bolt; 7. a through hole; 8. a locking assembly; 9. placing the plate; 11. a second seal ring; 12. a second seal groove; 13. a second seal ring; 41 a ventilation hole; 42. a sealing plate; 43. a ventilation connecting rod; 44. ejecting the assembly; 421. a plate body; 422. sealing the bump; 423. a first seal ring; 424. a first seal groove; 425. a first seal ring; 441. a ventilation sliding plate; 442. a ventilation support plate; 443. a first spring; 444. a communicating hole; 81. locking the push block; 82. a locking link; 83. locking the plugboard; 84. a locking groove; 85. a rebound assembly; 86. sealing gaskets; 851. a rebound hole; 852. returning the elastic sheet; 853. a second spring; 91. a placement groove; 92. a vent hole; 93. a handle; 94. filler material

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Referring to fig. 1-3, the utility model provides a strawberry packaging box with a fresh-keeping function, which comprises a box body 1, wherein the box body 1 is used for containing strawberries; a placing plate 9 is detachably connected in the box body 1, and a moisture absorption plate 3 is arranged between the placing plate 9 and the box body 1; two side edges of any opposite edges of the box body 1 are respectively provided with an air interchanger 4, and the air interchangers 4 are communicated with the inner cavity of the box body 1;

the box cover 2 is detachably connected with the top end of the box body 1; a locking device is arranged in the box cover 2 and is detachably connected with the box body 1;

the locking device comprises a locking hole 5 arranged at the top end of the box cover 2, and a locking bolt 6 with a wedge-shaped bottom end is connected in the locking hole 5 in a threaded manner; through holes 7 vertical to the side edge of the box body 1 are formed in the periphery of the bottom end of the locking hole 5 at equal intervals in the circumferential direction, and locking assemblies 8 are arranged in the through holes 7; the bottom of the locking bolt 6 abuts the end of the locking assembly 8.

According to the utility model, a sealed environment is formed in the box body 1 through the locking assembly 8 arranged in the box cover 2, and the filling gas in the box body 1 is replaced through the two air interchangers 4, so that the oxidation respiration speed of the strawberries in the box body 1 is reduced, and the fresh-keeping period of the strawberries is prolonged; set up in box body 1 and place board 9, fix the strawberry in the box body 1, prevent that it causes mechanical damage to place between the strawberry or the strawberry collides with 1 of box body between the transportation, place and set up moisture absorption plate 3 between board 9 and the 1 inner chamber of box body, absorb the aqueous vapor that the strawberry gived off, prevent that the strawberry surface is stained with water and is rotten with higher speed, prolonged the fresh-keeping period of strawberry greatly.

Furthermore, a placing groove 91 for placing strawberries is formed in the placing plate 9, flexible and breathable filler 94 is arranged in the placing groove 91, and gaps are filled with the filler 94 after the strawberries are placed in the placing groove 91, so that mechanical damage caused by rolling collision of the strawberries is prevented, and the fresh-keeping period of the strawberries is prolonged; a plurality of vent holes 92 are formed in the placing plate 9 in a penetrating manner, so that the permeability of the placing plate 9 is increased, the contact area between the moisture emitted by the strawberries and the moisture absorption plate 3 is increased, and the strawberries are prevented from being rotten due to condensation of moisture on the strawberries; in order to facilitate the whole taking-out of the placing plate 9, handles 93 are symmetrically arranged on two sides of the placing plate 9.

Furthermore, the fresh-keeping gas is a mixed gas with the volume ratio of 80% of nitrogen, 8% of oxygen and 12% of carbon dioxide, so that the oxygen content is reduced, the content of inert gases such as nitrogen, carbon dioxide and the like is improved, the aerobic respiration effect of the strawberries is reduced, and the fresh-keeping period of the strawberries is prolonged.

In a further optimized scheme, the two air interchangers 4 are arranged in a central symmetry mode relative to the box body 1. The two air interchangers 4 do not distinguish an inlet and an outlet, are symmetrically arranged about the center of the box body 1, are convenient to connect and do not need to be distinguished; meanwhile, the ventilation device 4 is arranged at one side of the side wall of the box body 1 and does not interfere with the locking component 8.

According to a further optimized scheme, the ventilation device 4 comprises a ventilation hole 41 formed in the side wall of the box body 1, one end, located in the inner cavity of the box body 1, of the ventilation hole 41 is detachably connected with a sealing plate 42, one end, facing the outside of the box body 1, of the sealing plate 42 is fixedly connected with a ventilation connecting rod 43, the tail end of the ventilation connecting rod 43 is fixedly connected with a jacking component 44, and the jacking component 44 is arranged in the ventilation hole 41; the jacking assembly 44 comprises a ventilation sliding plate 441 fixedly connected with the tail end of the ventilation connecting rod 43, and the ventilation sliding plate 441 is in sliding connection with the ventilation hole 41; a ventilation support plate 442 is arranged between the sealing plate 42 and the ventilation sliding plate 441, the ventilation connecting rod 43 penetrates through the ventilation support plate 442 and is in sliding connection with the ventilation support plate 442, and the ventilation support plate 442 is fixedly connected with the inner wall of the ventilation hole 41; a first spring 443 is fixedly connected between the ventilation support plate 442 and the ventilation sliding plate 441, and the first spring 443 is sleeved on the ventilation connecting rod 43; the ventilation sliding plate 441 and the ventilation supporting plate 442 are both provided with a plurality of communicating holes 444 in a penetrating manner. During air exchange, two interfaces of an air exchange packaging machine (not shown in the figure) are respectively inserted into the two air exchange ports to be abutted against the air exchange sliding plate 441, then the air exchange sliding plate 441 is pushed to move towards the inner cavity of the box body 1, the air exchange sliding plate 441 pushes the sealing plate 42 to move towards the inner cavity of the box body 1 through the air exchange connecting rod 43, the sealing plate 42 is separated from the air exchange hole 41, and the inside and the outside of the box body 1 are communicated; two interfaces of the modified atmosphere packaging machine respectively inject gas and exhaust gas, one interface injects the prepared fresh-keeping gas into the box body 1, and the other interface exhausts the air in the box body 1, so that the ventilation effect is achieved. After ventilation is finished, two air ports of the modified atmosphere packaging machine are drawn out from the ventilating hole 41, the first spring 443 pushes the ventilating slide sheet to move outwards to drive the sealing plate 42 to be inserted into the ventilating hole 41 again, the ventilating hole 41 is sealed, the inner cavity of the box body 1 is sealed, the loss of fresh-keeping gas in the box body 1 is prevented, and the fresh-keeping period of the strawberries is prolonged. The communication hole 444 is used for ventilation, gas passes through the ventilation slide plate 441 and the ventilation support plate 442, and the ventilation support plate 442 is used for supporting the ventilation link 43 and providing a basis for the first spring 443 to be fixed and rebound.

In a further optimized scheme, the sealing plate 42 comprises a plate body 421, one end of the plate body 421, which faces the ventilating hole 41, is fixedly connected with a sealing bump 422, and the sealing bump 422 is matched with the ventilating hole 41; a first sealing ring 423 is fixedly connected outside the sealing convex block 422, a first sealing ring 425 matched with the first sealing ring 423 is arranged on the side wall of the box body 1, and a first sealing ring is fixedly connected at the bottom end of the first sealing ring 425. Sealed lug 422 is round platform type lug, the one end diameter that is close to plate body 421 is big and with 41 diameter looks adaptations of scavenge port, the one end diameter of keeping away from plate body 421 is little, be convenient for insert scavenge port 41, increase sealed effect when playing certain guide effect, first sealing ring 423 makes the sealed effect of closing plate 42 better with first sealing washer 425's cooperation, first sealing ring 423 is made for flexible material, prevent that first sealing ring 423 and first sealing washer 425 from colliding with hard, also can improve sealed effect.

According to a further optimized scheme, the locking assembly 8 comprises a locking push block 81 abutted against the bottom end of the locking bolt 6, and one end, far away from the locking bolt 6, of the locking push block 81 is fixedly connected with a locking connecting rod 82; the tail end of the locking connecting rod 82 is fixedly connected with a locking inserting plate 83; a locking groove 84 matched with the locking inserting plate 83 is formed in the side wall of the box body 1, and the locking inserting plate 83 is inserted in the locking groove 84; the locking link 82 is provided with a rebound assembly 85; the rebounding assembly 85 comprises rebounding holes 851 which are arranged in parallel with the locking holes 5, two ends of each rebounding hole 851 are respectively communicated with the locking holes 5, and the locking connecting rod 82 penetrates through the rebounding holes 851; a rebound piece 852 is connected in the rebound hole 851 in a sliding way, and the locking connecting rod 82 penetrates through the rebound piece 852 and is fixedly connected with the same; a second spring 853 is fixedly connected between the rebounding piece 852 and one end of the rebounding hole 851, which faces the locking inserting plate 83; the second spring 853 is fitted over the locking link 82. When the box is used, the box cover 2 is covered on the box body 1, then the locking bolt 6 is screwed, so that the locking bolt 6 moves downwards, when the locking bolt moves downwards, the wedge-shaped surface of the locking bolt 6 presses the locking push block 81 to move towards the direction far away from the locking hole 5, then the locking connecting rod 82 pushes the locking inserting plate 83 to move towards the side wall of the box body 1, and finally the locking inserting plate is inserted into the locking groove 84 to lock the box body 1 and the box cover 2, so that the inner cavity of the box body 1 is isolated from the outside, the fresh-keeping gas and the air are prevented from exchanging, and the fresh-keeping period is prolonged; when the box cover 2 is opened, the locking bolt 6 is reversely screwed to move the locking bolt 6 upwards, so that the extrusion to the locking push block 81 is reduced, the second spring 853 rebounds, the locking connecting rod 82 is pushed to move towards the locking hole 5 through the rebounding piece 852, the locking inserting plate 83 is separated from the locking groove 84, and the box body 1 and the box cover 2 are not clamped any more and can be separated.

In a further optimized scheme, a sealing gasket 86 is fixedly connected to the bottom end of the locking groove 84, and the sealing gasket 86 abuts against the locking insertion plate 83. The sealing gasket 86 is made of a flexible material, so that the locking insertion plate 83 and the locking groove 84 can be prevented from being rigidly collided, and the sealing effect is improved.

According to the further optimized scheme, the top end of the box body 1 is fixedly connected with a second sealing ring 11, and the bottom end of the box cover 2 is provided with a second sealing groove 12 matched with the second sealing ring 11; a second sealing ring 13 is fixedly connected to the bottom end of the second sealing groove 12. The cooperation of first sealing ring 423 and first sealing washer 425 makes the sealed effect of closing plate 42 better, and first sealing ring 423 is made for flexible material, prevents that first sealing ring 423 and first sealing washer 425 from colliding with hard, also can improve sealed effect.

The using method comprises the following steps:

selecting a planting area with normal fruit development and less plant diseases and insect pests for harvesting; and grading according to strawberry variety, size, shape, maturity and freshness.

Placing the graded strawberries into a placing groove 91 of a placing plate 9, and filling gaps between the strawberries and the placing groove 91 with filling materials 94 to prevent the strawberries from moving and colliding in the placing groove 91; then, a moisture absorption plate 3 is padded in the box body 1, then the placing plate 9 is placed on the top surface of the moisture absorption plate 3, then the box cover 2 is covered on the box body 1, and the second sealing ring 11 is inserted into the second sealing groove 12 and abuts against the second sealing ring 13; the locking bolt 6 is screwed to insert the locking insert 83 into the locking groove 84 and abut against the sealing gasket 86, thereby sealing and locking the box body 1 and the box cover 2.

Placing the preservation box filled with the strawberries into a preservation warehouse for precooling, wherein the time between harvesting operation and precooling operation is not more than 6 hours; the precooling temperature is set to be 4 ℃ and the humidity is 85% -90%, and the temperature of the strawberry cores is reduced to the temperature of the fresh-keeping warehouse during precooling; cleaning and sterilizing the fresh-keeping warehouse before fresh keeping, and starting the machine for cooling the strawberries in advance for 40-48 h before warehousing.

Placing the precooled strawberries on a photoelectric tracking split charging line according to the divided grades, enabling the fresh-keeping boxes filled with the strawberries to sequentially pass through an ozone sterilization tunnel, an automatic box arranging machine, a modified atmosphere packaging machine and a weighing and labeling all-in-one machine, wherein the modified atmosphere packaging machine replaces air in the box body 1 into fresh-keeping gas through air interchangers 4 on two sides of the box body 1, and then weighing and labeling are carried out, so that the whole packaging process is completed.

The packaged packaging boxes are orderly stacked in a packaging box with air holes and placed in a preservation warehouse for preservation or placed in a transport vehicle for transportation, wherein the storage temperature of the preservation warehouse and the storage temperature of the transport vehicle are 0-4 ℃.

By arranging the sealed environment and the gas replacement technology, the fresh-keeping period of the strawberries is greatly prolonged, the probability of mechanical damage of the strawberries is reduced, the contact between the strawberries and water vapor is reduced, and the storage and transportation cost of the strawberries is reduced.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above embodiments are only for describing the preferred mode of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims

1. The utility model provides a strawberry packaging box with fresh-keeping function which characterized in that: comprises that

The box body (1), the box body (1) is used for containing strawberries; a placing plate (9) is detachably connected in the box body (1), and a moisture absorption plate (3) is arranged between the placing plate (9) and the box body (1); two side edges of any opposite edges of the box body (1) are respectively provided with an air interchanger (4), and the air interchangers (4) are communicated with an inner cavity of the box body (1);

the box cover (2) is detachably connected with the top end of the box body (1);

the locking device comprises a locking hole (5) formed in the top end of the box cover (2), and a locking bolt (6) with a wedge-shaped bottom end is connected with the locking hole (5) in a threaded manner; through holes (7) perpendicular to the side edge of the box body (1) are formed in the periphery of the bottom end of the locking hole (5) at equal intervals in the circumferential direction, and locking assemblies (8) are arranged in the through holes (7); the bottom end of the locking bolt (6) is abutted against the end part of the locking assembly (8).

2. The strawberry packaging box with preservation function according to claim 1, characterized in that: the two air interchangers (4) are arranged in a central symmetry mode relative to the box body (1).

3. The strawberry packaging box with preservation function according to claim 1, characterized in that: breather (4) is including seting up breather hole (41) of box body (1) lateral wall, breather hole (41) are located the one end of box body (1) inner chamber can be dismantled and be connected with closing plate (42), closing plate (42) orientation the outer one end rigid coupling of box body (1) has ventilation connecting rod (43), the end of ventilation connecting rod (43) is provided with and backs down subassembly (44), it establishes to back down subassembly (44) in breather hole (41).

4. The strawberry packaging box with preservation function of claim 3, wherein: the ejection assembly (44) comprises a ventilation sliding plate (441) fixedly connected with the tail end of the ventilation connecting rod (43), and the ventilation sliding plate (441) is in sliding connection with the ventilation hole (41); a ventilation support plate (442) is arranged between the sealing plate (42) and the ventilation sliding plate (441), the ventilation connecting rod (43) penetrates through the ventilation support plate (442) and is in sliding connection with the ventilation support plate (442), and the ventilation support plate (442) is fixedly connected with the inner wall of the ventilation hole (41); a first spring (443) is fixedly connected between the ventilation support plate (442) and the ventilation sliding plate (441), and the first spring (443) is sleeved on the ventilation connecting rod (43); the ventilation sliding plate (441) and the ventilation supporting plate (442) are both provided with a plurality of communicating holes (444) in a penetrating way.

5. The strawberry packaging box with preservation function of claim 4, wherein: the sealing plate (42) comprises a plate body (421), one end, facing the ventilating hole (41), of the plate body (421) is fixedly connected with a sealing lug (422), and the sealing lug (422) is matched with the ventilating hole (41); the outer rigid coupling of sealed lug (422) has first sealing ring (423), the lateral wall of box body (1) seted up with first sealing ring (423) looks adaptation first seal groove (424), the bottom rigid coupling of first seal groove (424) has first sealing washer (425).

6. The strawberry packaging box with preservation function according to claim 1, characterized in that: the locking assembly (8) comprises a locking push block (81) abutted against the bottom end of the locking bolt (6), and one end, far away from the locking bolt (6), of the locking push block (81) is fixedly connected with a locking connecting rod (82); the tail end of the locking connecting rod (82) is fixedly connected with a locking inserting plate (83); a locking groove (84) matched with the locking inserting plate (83) is formed in the side wall of the box body (1), and the locking inserting plate (83) is inserted into the locking groove (84); and a rebound assembly (85) is arranged on the locking connecting rod (82).

7. The strawberry packaging box with preservation function of claim 6, wherein: the rebounding assembly (85) comprises rebounding holes (851) which are arranged in parallel with the locking hole (5), two ends of each rebounding hole (851) are respectively communicated with the locking hole (5), and the locking connecting rod (82) penetrates through the rebounding holes (851); a rebound sheet (852) is connected in the rebound hole (851) in a sliding manner, and the locking connecting rod (82) penetrates through the rebound sheet (852) and is fixedly connected with the same; a second spring (853) is fixedly connected between the rebounding piece (852) and one end of the rebounding hole (851) facing the locking inserting plate (83); the second spring (853) is sleeved on the locking connecting rod (82).

8. The strawberry packaging box with preservation function of claim 7, wherein: and a sealing gasket (86) is fixedly connected to the bottom end of the locking groove (84), and the sealing gasket (86) is abutted against the locking inserting plate (83).

9. The strawberry packaging box with preservation function of claim 7, wherein: a second sealing ring (11) is fixedly connected to the top end of the box body (1), and a second sealing groove (12) matched with the second sealing ring (11) is formed in the bottom end of the box cover (2); and a second sealing ring (13) is fixedly connected to the bottom end of the second sealing groove (12).