A storage preservation device for long-term storage of food and methods of use thereof

Abstract

The application provides a storage and preservation device for long-term storage of food and a use method thereof, relates to the technical field of food preservation, and comprises a basin body, a box cover and a containing cavity. The storage and preservation device for long-term storage of food has the effects of low energy consumption and long-time sealed preservation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of food preservation, and in particular to a storage and preservation device for long-term storage of food and a method of use thereof. BACKGROUND

[0002] Nowadays, with the development of agriculture and transportation industry and the improvement of the quality of life of residents, people pay more and more attention to the quality of food. Fresh food materials become the first choice for residents' dining due to their enjoyment value and nutritional value. However, in remote and sparsely populated areas or offshore living areas, it is difficult to buy fresh food materials due to geographical conditions, and in most cases, fresh food materials need to be purchased once and preserved for a long time by preservation equipment. The current long-term preservation method is mainly low-temperature preservation, such as refrigerator or freezer refrigeration preservation, light sterilization and disinfection preservation as the main preservation method, but both methods have defects: such as energy consumption, power supply is required, not suitable for powerless use scenarios, and using refrigerator or freezer, or ultraviolet disinfection or using sealed preservation box to store food materials and then ultraviolet disinfection, because the sealing performance will decay seriously with time, causing air leakage, which can easily cause food materials to lose water, such as vegetables and fruits losing about 5% water will appear wilting, and some vegetables and fruits will also affect their own taste, crispness and color because of water loss, resulting in poor preservation effect, short preservation time and inconvenient use.

[0003] In addition, if the preservation box is sealed with food materials and the low-temperature or high-temperature environment changes, the gas in the box will also expand and contract with heat, causing air leakage, resulting in poor preservation effect of food materials.

[0004] Therefore, in view of the above problems, a storage and preservation device and method for long-term storage of food are proposed to solve the technical problems of long-term, low-energy and multi-scenario preservation of food materials. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a storage and preservation device for long-term storage of food and a method of use thereof to improve the above problems.

[0006] The first aspect, the embodiment of the present application provides a storage and preservation device for long-term storage of food, the storage and preservation device for long-term storage of food comprises a basin body, a box cover and a containing cavity, wherein: the box cover is covered on the basin body to form the containing cavity; the basin body comprises a bottom basin, a folding ring, a top basin and a basin mouth ring; the folding ring is connected between the bottom basin and the top basin, and is used for folding and storing the basin body; the basin mouth ring is connected on the top basin, and the basin body is detachably connected with the box cover through the basin mouth ring; the basin mouth ring is provided with a head basin mouth edge, a tail basin mouth edge and two long edge basin mouth edges; the head basin mouth edge is provided with a basin mouth biting insertion slot, the tail basin mouth edge is provided with a basin mouth biting clamping slot, and the two long edge basin mouth edges are provided with biting sliding grooves; the box cover comprises a cover plate body, a gas filling nozzle and a gas discharging nozzle; the gas filling nozzle and the gas discharging nozzle are arranged on the cover plate body; the gas filling nozzle penetrates through the cover plate body in the thickness direction of the cover plate body, is used for filling nitrogen into the containing cavity, and adjusts the air pressure in the containing cavity; the gas discharging nozzle penetrates through the cover plate body in the thickness direction of the cover plate body, is used for discharging the gas in the containing cavity out of the containing cavity, and adjusts the air pressure in the containing cavity; the cover plate body is provided with a head cover plate edge, a tail cover plate edge and two long edge cover plate edges; the head cover plate edge is provided with a cover plate biting insertion plate matched with the basin mouth biting insertion slot, the tail cover plate edge is provided with a cover plate biting clamping block matched with the basin mouth biting clamping slot, and the two long edge cover plate edges are respectively provided with biting sliding strips matched with the two biting sliding grooves; when the storage and preservation device for long-term storage of food is in a covering condition, the box cover is covered on the basin body, the air pressure in the containing cavity is lower than or equal to the external air pressure, the biting sliding strips are inserted in the biting sliding grooves, the cover plate biting insertion plate is inserted in the basin mouth biting insertion slot, and the cover plate biting clamping block is inserted in the basin mouth biting clamping slot; when the storage and preservation device for long-term storage of food is in a sealing condition, the box cover is covered on the basin body, the air pressure in the containing cavity is greater than the external air pressure, the biting sliding strips are sealingly engaged with the biting sliding grooves, the cover plate biting insertion plate is sealingly engaged with the basin mouth biting insertion slot, and the cover plate biting clamping block is sealingly engaged with the basin mouth biting clamping slot.

[0007] Furthermore, the bite slide includes a vertical sealing plug plate and a horizontal sealing plug plate, one side of the vertical sealing plug plate is vertically connected to the cover plate body, and the other side is vertically connected to the horizontal sealing plug plate; the horizontal sealing plug plate is arranged in parallel with the cover plate body, and one side of the horizontal sealing plug plate protrudes from the vertical sealing plug plate toward the direction of the cover plate body; the bite slide includes a first supporting slot plate, a vertical sealing slot plate and a horizontal sealing slot plate, the first supporting slot plate is arranged horizontally, and one side of the first supporting slot plate is connected to the basin ring, and the other side is connected to one side of the vertical sealing slot plate, and the other side of the vertical sealing slot plate is connected to the horizontal The sealing groove plate is connected, the horizontal sealing groove plate is parallel to the first supporting groove plate, and one side of the horizontal sealing groove plate protrudes from the vertical sealing groove plate toward the direction of the basin ring; when the storage and preservation device for long-term storage of food is in a sealed working condition, the box cover is closed on the basin body, the air pressure in the accommodating cavity is greater than the external air pressure, the horizontal sealing plug plate is connected to the first supporting groove plate to form a first sealing surface; the horizontal sealing plug plate is connected to the vertical sealing groove plate to form a second sealing surface; the horizontal sealing groove plate is connected to the vertical sealing plug plate to form a third sealing surface, and the horizontal sealing groove plate is connected to the cover plate body to form a fourth sealing surface.

[0008] Furthermore, the cover plate engaging plug includes a guide block, which is connected to the top of one end of the cover plate body and is used to guide the cover plate engaging plug to be inserted into the basin mouth engaging slot.

[0009] The basin mouth engagement slot includes a second supporting slot plate, a first horizontal slot plate and a first vertical slot plate. One side of the second supporting slot plate is vertically connected to the end face of the basin mouth ring, and the other side is connected to one side of the first horizontal slot plate. The other side of the first horizontal slot plate is connected to the first vertical slot plate. The second supporting slot plate is arranged parallel to the first vertical slot plate.

[0010] When the storage and preservation device for long-term storage of food is in a sealed condition, the box lid is closed on the basin body, the air pressure in the accommodating cavity is greater than the external air pressure, the first vertical groove plate is connected to the cover plate body to form a fifth sealing surface; the first horizontal groove plate is connected to the guide block to form a sixth sealing surface.

[0011] Furthermore, the basin mouth engagement slot includes a second horizontal slot plate and a third support slot plate, one side of the third support slot plate is pre-connected to the basin mouth ring, and the other side is connected to one side of the second horizontal slot plate, and the other side of the second horizontal slot plate protrudes from the third support plate and is arranged toward the side away from the direction of the accommodating cavity.

[0012] The cover plate occlusion block includes vertical sealing block and horizontal sealing block, one side of the vertical sealing block is connected with the cover plate body, and the other side is connected with the horizontal sealing block.

[0013] When the storage fresh-keeping device for long-term storage of food is in a sealed working condition, the box cover is closed on the basin body, the air pressure in the accommodating cavity is greater than the external air pressure, the horizontal sealing block is connected with the second horizontal groove plate to form a seventh sealing surface, the horizontal sealing block is connected with the third support groove plate to form an eighth sealing surface, and the second horizontal groove plate is connected with the vertical sealing block to form a ninth sealing surface.

[0014] Preferably, the tail cover plate edge is provided with a pressing buckle, the tail basin opening edge is provided with a buckle joint matched with the pressing buckle, and the pressing buckle is matched with the buckle joint to seal the accommodating cavity.

[0015] Preferably, the long-side basin opening edge is provided with a first limiting plate, and the first limiting plate is arranged below the occlusion sliding groove to limit the movement of the long-side cover plate edge to the direction of the top basin.

[0016] Preferably, the long-side basin opening edge is provided with a reinforcing rib, one end of the reinforcing rib is connected with the long-side basin opening edge, and the other end is connected with the first support groove plate.

[0017] Preferably, the head cover plate edge is provided with a second limiting plate, and the second limiting plate is arranged above the cover plate occlusion block to limit the movement of the head basin opening edge away from the direction of the top basin.

[0018] Preferably, the air inlet is provided with a first one-way valve, the first one-way valve is in a conductive direction from the outside of the box cover to the inside of the box cover, the air outlet is provided with a second one-way valve, and the second one-way valve is in a conductive direction from the inside of the box cover to the outside of the box cover.

[0019] Preferably, the box cover includes a pressure gauge, and the pressure gauge is arranged on the cover plate body to show the gas pressure in the accommodating cavity.

[0020] Preferably, one side of the horizontal sealing block connected with the first support groove plate is provided with a first sealing strip, one side of the horizontal sealing block connected with the vertical sealing groove plate is provided with a second sealing strip, one side of the vertical sealing block connected with the horizontal sealing groove plate is provided with a third sealing strip, and one side of the cover plate body connected with the horizontal sealing groove plate is provided with a fourth sealing strip.

[0021] Preferably, the top basin, the bottom basin and the cover plate body are all made of light-transmitting material.

[0022] Preferably, the guide block is a triangular prism structure, the guide block has an inclined surface, and the cover plate engages with the insertion plate through the inclined surface and is inserted into the basin opening engagement slot.

[0023] Preferably, the box cover has a negative ion releasing device, the negative ion releasing device is arranged on the cover plate body and located on the inside of the box cover of the cover plate body.

[0024] The storage and preservation device for long-term storage of food provided by the present application, when in use, the bottom basin should be pulled first, the folding ring is unfolded to separate the bottom basin from the top basin, and the preservation product required is placed in the containing cavity; the box cover is closed on the basin body. The process of closing the box cover on the basin body includes: first, the two engagement sliding strips of the box cover are pushed into the two engagement sliding grooves of the basin body along the length direction, in this process, the cover plate engagement insertion plate is inserted into the basin opening engagement insertion slot, and finally the cover plate engagement clamping block is inserted into the basin opening engagement clamping slot for complete closing. After the box cover is closed on the bottom basin, the inflation nozzle and the deflation nozzle are opened, nitrogen is filled into the containing cavity through the inflation nozzle, the nitrogen is used to press the air in the containing cavity, and the air is discharged from the containing cavity; after a period of time of filling nitrogen, the deflation nozzle is sealed, nitrogen is continuously filled into the containing cavity through the inflation nozzle, and after sufficient nitrogen is filled, the gas pressure in the containing cavity is greater than the external gas pressure, resulting in a force in the opposite direction between the box cover and the basin body, which will cause the engagement sliding groove on the long side basin opening edge and the engagement sliding strip on the long side cover plate edge to be sealed engagement; it will also cause the cover plate engagement insertion plate on the head cover plate edge and the basin opening engagement insertion slot on the head basin opening edge to be sealed engagement; it will also cause the cover plate engagement clamping block on the tail cover plate edge and the basin opening engagement clamping slot on the tail basin opening edge to be sealed engagement, thus causing the engagement sliding strip and the engagement sliding groove to cooperate to achieve a sealing effect, the cover plate engagement insertion plate and the basin opening engagement insertion slot to cooperate to achieve a sealing effect, and the cover plate engagement clamping block and the basin opening engagement clamping slot to cooperate to achieve a sealing effect, so that the storage and preservation device for long-term storage of food provided by the present application finally achieves a sealing effect.

[0025] The storage and preservation device for long-term storage of food provided by the present application has a sealing effect and nitrogen is filled into the containing cavity, so that the preservation product placed in the containing cavity is isolated from oxygen, achieving a preservation effect, and the high gas pressure in the containing cavity can cause a force in the opposite direction between the box cover and the basin body, making the cooperation between the box cover and the basin body more compact, the gas pressure difference between the inside of the containing cavity and the outside increases, and the engagement between the multiple components of the box cover and the multiple components of the basin body is tighter, the gap between the components is smaller, and a sealing effect is achieved. In addition, the storage and preservation device for long-term storage of food can be placed in a low-temperature environment for preservation, so that the preservation product can be preserved for a long time.

[0026] In the second aspect, the application further provides a method for using the storage and preservation device for long-term storage of food, which is suitable for the storage and preservation device for long-term storage of food described in the above technical solution, and comprises the following steps: pulling the bottom basin, unfolding the folding ring, and separating the bottom basin from the top basin; placing the desired preservation product into the containing cavity; closing the box cover on the basin body; inserting the two occlusion sliding strips of the box cover into the two occlusion sliding grooves of the basin body, respectively; inserting the occlusion insertion plate of the cover plate into the occlusion insertion groove of the basin mouth; inserting the occlusion clamping block of the cover plate into the occlusion clamping groove of the basin mouth; opening the air inlet and the air outlet, and filling nitrogen into the containing cavity through the air inlet; closing the air outlet, continuously filling nitrogen into the containing cavity through the air inlet, and then closing the air inlet; and placing the storage and preservation device for long-term storage of food in a low-temperature environment for preservation.

[0027] The method for using the storage and preservation device for long-term storage of food provided by the application has the same effect as the storage and preservation device for long-term storage of food provided by the first aspect of the application, and therefore the description thereof is omitted here.

[0028] Other features and advantages of the application will be set forth in the following description, and in part will become apparent from the description, or can be learned by practice of the application. The objects and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

[0029] In order to make the above-mentioned objects, features and advantages of the application more apparent, the following preferred embodiments are specifically described, and the accompanying drawings are referred to, and the detailed description is as follows. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the specific embodiments of the application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0031] Figure 1 A perspective view of the storage and preservation device for long-term storage of food provided by the first embodiment of the application;

[0032] Figure 2 Another perspective view of the storage and preservation device for long-term storage of food provided by the first embodiment of the application;

[0033] Figure 3 A structural schematic view of the storage and preservation device for long-term storage of food provided by the first embodiment of the application;

[0034] Figure 4 A structural schematic view of the storage and preservation device for long-term storage of food provided by the first embodiment of the application; Figure 3The storage fresh-keeping device for long-term storage of food is shown in a cross-sectional view along A-A;

[0035] Figure 5 The storage fresh-keeping device for long-term storage of food is shown in a cross-sectional view along A-A; Figure 4 The storage fresh-keeping device for long-term storage of food is shown in a cross-sectional view along A-A;

[0036] Figure 6 The storage fresh-keeping device for long-term storage of food is shown in a cross-sectional view along A-A; Figure 5 The storage fresh-keeping device for long-term storage of food is shown in a cross-sectional view along A-A;

[0037] Figure 7 The storage fresh-keeping device for long-term storage of food is shown in a cross-sectional view along A-A;

[0038] Figure 8 The storage fresh-keeping device for long-term storage of food is shown in a cross-sectional view along A-A; Figure 7 The storage fresh-keeping device for long-term storage of food is shown in a cross-sectional view along A-A;

[0039] Figure 9 The storage fresh-keeping device for long-term storage of food is shown in a cross-sectional view along A-A; Figure 8 The storage fresh-keeping device for long-term storage of food is shown in a cross-sectional view along A-A;

[0040] Figure 10 The storage fresh-keeping device for long-term storage of food is shown in a cross-sectional view along A-A; Figure 8 The storage fresh-keeping device for long-term storage of food is shown in a cross-sectional view along A-A;

[0041] Figure 11 The storage fresh-keeping device for long-term storage of food is shown in a cross-sectional view along A-A; Figure 10 The storage fresh-keeping device for long-term storage of food is shown in a cross-sectional view along A-A;

[0042] Illustration: 1-bowl; 2-box cover; 3-3 containing cavity; 11-bottom bowl; 12-folding ring; 13-top bowl; 14-bowl ring; 141-bowl mouth engagement slot; 142-bowl mouth engagement card slot; 143-bite sliding groove; 144-dog joint; 145-first limit plate; 146-stiffening rib; 1411-second support groove plate; 1412-first horizontal groove plate; 1413-first vertical groove plate; 1421-second horizontal groove plate; 1422-third support groove plate; 1431-first support groove plate; 1432-vertical sealing groove plate; 1433-horizontal sealing groove plate; 21-cover plate body; 22-inflation nozzle; 23-deflation nozzle; 24-pressure gauge; 211-cover plate engagement insert plate; 212-cover plate engagement card block; 213-bite sliding strip; 214-pressing buckle; 215-second limit plate; 2111-guide block; 2121-vertical sealing card block; 2122-horizontal sealing card block; 2131-vertical sealing insert plate; 2132-horizontal sealing insert plate. DETAILED DESCRIPTION

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0044] Example 1

[0045] In order to facilitate understanding of this embodiment, a storage and preservation device for long-term storage of food disclosed in an embodiment of the present invention is first introduced in detail.

[0046] Figure 1 A three-dimensional structural diagram of a storage and preservation device for long-term food storage provided in Example 1 of the present invention; Figure 2 Another three-dimensional structural diagram of the storage and preservation device for long-term storage of food provided in the first embodiment of the present invention; Figure 3 This is a schematic structural diagram of a storage and preservation device for long-term food storage provided in Example 1 of the present invention; Figure 4 for Figure 3 The storage and preservation device for long-term storage of food is shown in a cross-sectional view along the AA plane; Figure 5 for Figure 4 The storage and preservation device for long-term storage of food is shown in an enlarged view at B; Figure 6 for Figure 5 Another schematic diagram of a storage and preservation device for long-term storage of food is shown;

[0047] Figure 7 This is another structural diagram of the storage and preservation device for long-term storage of food provided in the first embodiment;

[0048] Figure 8 for Figure 7 The storage and preservation device for long-term storage of food is shown in a cross-sectional view along the CC plane; Figure 9 for Figure 8 The storage and preservation device for long-term storage of food is shown in an enlarged view at D; Figure 10 for Figure 8 The storage and preservation device for long-term storage of food is shown in an enlarged view at E; Figure 11 for Figure 10 Shown is another schematic diagram of a storage and preservation device for long-term storage of food.

[0049] See also Figures 1-11 The structural diagram of the storage and preservation device for long-term storage of food is shown. The present invention provides a storage and preservation device for long-term storage of food, which includes a basin body 1, a box cover 2 and an accommodating cavity 3.

[0050] The box cover 2 is covered on the basin body 1 to form a containing cavity 3 for containing fresh-keeping products.

[0051] The box cover 2 can be a flat plate structure or a raised structure. A groove is arranged on the box cover 2, and a groove body of the groove faces the basin body 1, so as to increase the containing space of the containing cavity 3.

[0052] The basin body 1 comprises a bottom basin 11, a folding ring 12, a top basin 13 and a basin mouth ring 14. The folding ring 12 is connected between the bottom basin 11 and the top basin 13, and is used for folding and storing the basin body 1.

[0053] Specifically, the folding ring 12 is made of a material with a certain elasticity, such as rubber material or high polymer composite material. The folding ring 12 is sealingly arranged with the bottom basin 11 and the top basin 13, such as sealingly bonded, so as to ensure the sealing performance of the storage and fresh-keeping device for long-term storage of food provided in the embodiment.

[0054] In addition, the bottom basin 11 and the top basin 13 can be made of soft rubber material or food-grade plastic, such as polylactic acid, polypropylene, polycarbonate, polyethylene terephthalate, etc.

[0055] The top of the folding ring 12 is connected to the top basin 13, the bottom of the folding ring 12 is connected to the bottom basin 11, and the folding ring 12 is bent to nest the bottom basin 11 in the top basin 13.

[0056] It should be noted that the size of the bottom basin 11 is smaller than the size of the top basin 13, so that the bottom basin 11 can be nested in the top basin 13 when the storage and fresh-keeping device for long-term storage of food is in the storage state. When the folding ring 12 is in the unfolded state, the bottom basin 11, the folding ring 12 and the top basin 13 are arranged from bottom to top.

[0057] The basin mouth ring 14 is connected to the top basin 13, and the basin body 1 is detachably connected to the box cover 2 through the basin mouth ring 14.

[0058] One end of the basin mouth ring 14 is connected to the top of the top basin 13, and the other end is detachably connected to the box cover 2, such as snap connection. In this embodiment, the top opening of the basin body 1 is rectangular, the plane of the box cover 2 is rectangular, and the plane size of the box cover 2 corresponds to the opening size of the basin body 1, so that the box cover 2 can be covered on the opening of the basin body 1.

[0059] The box cover 2 can be made of edible plastic or glass.

[0060] The basin mouth ring 14 can be made of a material with high rigidity and strength, such as metal material, alloy material, glass material, or hard plastic material.

[0061] The basin mouth ring 14 is provided with a head basin mouth edge, a tail basin mouth edge and two long side basin mouth edges.

[0062] The top opening of the basin body 1 is rectangular, the horizontal section of the basin mouth ring 14 can be rectangular, the head basin mouth edge and the tail basin mouth edge are arranged in parallel, and the head basin mouth edge and the tail basin mouth edge are both short edges of the basin mouth ring 14 with a rectangular horizontal section.

[0063] The two long edge basin mouth edges are arranged in parallel and have the same size, and the two long edge basin mouth edges are long edges of the basin mouth ring 14 with a rectangular horizontal section.

[0064] The head basin mouth edge can be connected with the tail basin mouth edge through the two long edge basin mouth edges arranged in parallel. The head basin mouth edge is provided with a basin mouth engagement slot 141, the tail basin mouth edge is provided with a basin mouth engagement clamping groove 142, and the two long edge basin mouth edges are both provided with an engagement sliding groove 143; the two basin mouth engagement sliding grooves 143 are arranged in parallel, and the two basin mouth engagement sliding grooves 143 are oppositely arranged; and the basin mouth engagement clamping groove 142 and the basin mouth engagement slot 141 are both arranged towards the direction of the basin mouth of the basin body 1.

[0065] The box cover 2 comprises a cover plate body 21, an inflation nozzle 22 and a deflation nozzle 23; the inflation nozzle 22 and the deflation nozzle 23 are both arranged on the cover plate body 21; the inflation nozzle 22 penetrates the cover plate body 21 in the thickness direction of the cover plate body 21, is used for inflating nitrogen into the containing cavity 3, and adjusts the air pressure in the containing cavity 3.

[0066] The deflation nozzle 23 penetrates the cover plate body 21 in the thickness direction of the cover plate body 21, is used for discharging the gas in the containing cavity 3 from the containing cavity 3, and adjusts the air pressure in the containing cavity 3.

[0067] The inflation nozzle 22 and the deflation nozzle 23 are both provided with valves; the inflated gas can be nitrogen, inert gas or the like, and the fresh-keeping products such as vegetables and fruits are prevented from contacting oxygen or carbon dioxide, so as to avoid oxidation corruption, photosynthesis reaction, respiration reaction and the like.

[0068] The cover plate body 21 is provided with a head cover plate edge, a tail cover plate edge and two long edge cover plate edges.

[0069] The head cover plate edge is provided with a cover plate engagement insertion plate 211 matched with the basin mouth engagement slot 141, the tail cover plate edge is provided with a cover plate engagement clamping block 211 matched with the basin mouth engagement clamping groove 142, and the two long edge cover plate edges are respectively provided with engagement sliding strips 213 matched with the two engagement sliding grooves 143.

[0070] When the storage fresh-keeping device for long-term storage of food is in the closed working condition, the box cover 2 is closed on the basin body 1, the air pressure in the containing cavity 3 is lower than or equal to the external air pressure, the engagement sliding strips 213 are inserted into the engagement sliding grooves 143, the cover plate engagement insertion plate 211 is inserted into the basin mouth engagement slot 141, and the cover plate engagement clamping block 211 is inserted into the basin mouth engagement clamping groove 142.

[0071] When the storage and preservation device for long-term storage of food is in a sealed working condition, the box cover 2 is closed on the basin body 1, the air pressure in the containing cavity 3 is greater than the air pressure outside, the occlusion sliding bar 213 and the occlusion sliding groove 143 are sealed, so that the occlusion sliding bar 213 and the occlusion sliding groove 143 are sealed; the cover plate occlusion insertion plate 211 and the basin mouth occlusion insertion slot 141 are sealed, so that the cover plate occlusion insertion plate 211 and the basin mouth occlusion insertion slot 141 are sealed; the cover plate occlusion clamping block 211 and the basin mouth occlusion clamping slot 142 are sealed, so that the cover plate occlusion clamping block 211 and the basin mouth occlusion clamping slot 142 are sealed.

[0072] When the air pressure in the containing cavity 3 is greater than the air pressure outside, the greater the pressure difference between the inside and the outside, the greater the reaction force between the basin body 1 and the box cover 2, and the greater the occlusion force between the occlusion sliding bar 213 and the occlusion sliding groove 143, the cover plate occlusion insertion plate 211 and the basin mouth occlusion insertion slot 141, and the cover plate occlusion clamping block 211 and the basin mouth occlusion clamping slot 142, the tighter the occlusion, the smaller the fit clearance, and the sealing effect is achieved.

[0073] It should be noted that the storage and preservation device for long-term storage of food in the sealed working condition of the first embodiment should be understood as being filled with non-oxygen or carbon dioxide gas, such as nitrogen, into the containing cavity 3 based on the closing condition, so that the air pressure in the containing cavity 3 is greater than the air pressure outside. At this time, the cover plate and the basin body 1 have opposite movement trends under the condition of greater air pressure in the containing cavity 3, so that the occlusion sliding bar 213 and the occlusion sliding groove 143 are pressed against each other, the fit clearance between the occlusion sliding bar 213 and the occlusion sliding groove 143 is reduced, and the occlusion sliding bar 213 and the occlusion sliding groove 143 are sealed, so that the occlusion sliding bar 213 and the occlusion sliding groove 143 achieve the sealing effect. Similarly, the cover plate occlusion insertion plate 211 and the basin mouth occlusion insertion slot 141 are pressed against each other, the fit clearance between the cover plate occlusion insertion plate 211 and the basin mouth occlusion insertion slot 141 is reduced, and the cover plate occlusion insertion plate 211 and the basin mouth occlusion insertion slot 141 are sealed, so that the cover plate occlusion insertion plate 211 and the basin mouth occlusion insertion slot 141 achieve the sealing effect; the cover plate occlusion clamping block 211 and the basin mouth occlusion clamping slot 142 are pressed against each other, the fit clearance between the cover plate occlusion clamping block 211 and the basin mouth occlusion clamping slot 142 is reduced, and the cover plate occlusion clamping block 211 and the basin mouth occlusion clamping slot 142 are sealed, so that the cover plate occlusion clamping block 211 and the basin mouth occlusion clamping slot 142 achieve the sealing effect. Therefore, the box cover 2 and the basin body 1 achieve the sealing effect.

[0074] It should be noted that in the long-term storage of food storage preservation device provided in the first embodiment of the present application, the sealing bite should be understood as including the bite connection relationship between the two connecting pieces, and the sealing surface is formed between the two connecting pieces due to the large bite force and the small gap between the bite surfaces, so as to achieve the sealing effect. In this embodiment, the bite sliding bar 213 is sealed and engaged with the bite sliding groove 143, so that the bite sliding bar 213 is sealed and engaged with the bite sliding groove 143. At the same time, due to the large bite force and the small gap between the bite surfaces, the bite sliding bar 213 is sealed with the bite sliding groove 143. The cover plate bite plug plate 211 is sealed and engaged with the pot mouth bite slot 141, and the cover plate bite plug plate 211 is sealed and engaged with the pot mouth bite slot 141. At the same time, due to the large bite force and the small gap between the bite surfaces, the cover plate bite plug plate 211 is sealed with the pot mouth bite slot 141. The cover plate bite block 211 is sealed and engaged with the pot mouth bite slot 142, and the cover plate bite block 211 is sealed and engaged with the pot mouth bite slot 142. At the same time, when the bite force is large, the gap between the bite surfaces is small, so that the cover plate bite block 211 is sealed with the pot mouth bite slot 142.

[0075] It is worth mentioning that the bite surfaces of the bite sliding bar 213 and the bite sliding groove 143, the bite surfaces of the cover plate bite plug plate 211 and the pot mouth bite slot 141, and the bite surfaces of the cover plate bite block 211 and the pot mouth bite slot 142 are all provided with a silica gel sealing layer, which is used to further reduce the gap between the surfaces and enhance the sealing performance.

[0076] The storage and preservation device for long-term storage of food provided by the embodiment one of the present application, in use, the bottom basin 11 should be pulled first, the folding ring 12 is unfolded to separate the bottom basin 11 from the top basin 13, and the preservation product required is placed into the containing cavity 3; the box cover 2 is covered on the basin body 1. The process of covering the box cover 2 on the basin body 1 includes: the two occlusion slide strips 213 of the box cover 2 are required to be pushed into the two occlusion slide grooves 143 of the basin body 1 along the length direction respectively, in the process, the cover plate occlusion plug plate 211 is inserted into the basin mouth occlusion plug groove 141, and finally the cover plate occlusion clamping block 211 is inserted into the basin mouth occlusion clamping groove 142 for complete covering. After the box cover 2 is covered on the bottom basin 11, the air inlet nozzle 22 and the air outlet nozzle 23 are opened, nitrogen is filled into the containing cavity 3 through the air inlet nozzle 22, the air in the containing cavity 3 is extruded by the nitrogen, and the air is discharged from the containing cavity 3; after the nitrogen is filled for a period of time, the air outlet nozzle 23 is sealed, nitrogen is continuously filled into the containing cavity 3 through the air inlet nozzle 22, and after sufficient nitrogen is filled, the gas pressure in the containing cavity 3 is greater than the external gas pressure, resulting in the opposite force between the box cover 2 and the basin body 1, the force will cause the occlusion slide groove 143 of the long side basin mouth edge and the occlusion slide strip 213 of the long side cover plate edge to be sealed and occluded; the cover plate occlusion plug plate 211 of the head cover plate edge and the basin mouth occlusion plug groove 141 of the head basin mouth edge will also be sealed and occluded; the cover plate occlusion clamping block 211 of the tail cover plate edge and the basin mouth occlusion clamping groove 142 of the tail basin mouth edge will also be sealed and occluded, so as to cause the occlusion slide strip 213 and the occlusion slide groove 143 to be matched to achieve the sealing effect, the cover plate occlusion plug plate 211 and the basin mouth occlusion plug groove 141 are matched to achieve the sealing effect, and the cover plate occlusion clamping block 211 and the basin mouth occlusion clamping groove 142 are matched to achieve the sealing effect, so that the storage and preservation device for long-term storage of food provided by the present application finally achieves the sealing effect.

[0077] The occlusion slide strip 213 includes a vertical sealing plug plate 2131 and a horizontal sealing plug plate 2132, one side of the vertical sealing plug plate 2131 is connected vertically on the cover plate body 21, and the other side is connected vertically with the horizontal sealing plug plate 2132; the horizontal sealing plug plate 2132 is arranged in parallel with the cover plate body 21, and one side of the horizontal sealing plug plate 2132 protrudes vertically from the sealing plug plate 2131 towards the direction where the cover plate body 21 is located;

[0078] The occlusion slide groove 143 includes a first support groove plate 1431, a vertical sealing groove plate 1432 and a horizontal sealing groove plate 1433, the first support groove plate 1431 is arranged horizontally, one side of the first support groove plate 1431 is connected with the basin mouth ring 14, and the other side is connected with one side of the vertical sealing groove plate 1432, the other side of the vertical sealing groove plate 1432 is connected with the horizontal sealing groove plate 1433, the horizontal sealing groove plate 1433 is parallel with the first support groove plate 1431, and one side of the horizontal sealing groove plate 1433 protrudes vertically from the sealing groove plate 1432 towards the direction where the basin mouth ring 14 is located;

[0079] When the storage and preservation device for long-term storage of food is in a sealed working condition, the box cover 2 is covered on the basin body 1, the air pressure in the accommodating cavity 3 is greater than the air pressure outside, the horizontal sealing insert plate 2132 is connected with the first supporting groove plate 1431 to form a first sealing surface; the horizontal sealing insert plate 2132 is connected with the vertical sealing groove plate 1432 to form a second sealing surface; the horizontal sealing groove plate 1433 is connected with the vertical sealing insert plate 2131 to form a third sealing surface, and the horizontal sealing groove plate 1433 is connected with the cover plate body 21 to form a fourth sealing surface.

[0080] The connection relationship between the occlusion sliding strip 213 and the occlusion sliding groove 143 includes sliding connection and occlusion relationship. The sliding relationship is reflected in that the occlusion sliding strip 213 is inserted into the occlusion sliding groove 143 in a sliding manner. After complete insertion, after the accommodating cavity 3 is filled with nitrogen gas, due to the increase of the air pressure in the accommodating cavity 3, the internal pressure of the storage and preservation device for long-term storage of food provided in the embodiment and the external pressure exist air pressure difference, so that the occlusion sliding strip 213 and the occlusion sliding groove 143 form an occlusion relationship. Because the gap after occlusion is small, the sealing effect is achieved, so the occlusion sliding groove 143 and the occlusion sliding groove 143 form a sealing occlusion. The connecting surfaces formed by the occlusion sliding groove 143 and the occlusion sliding groove 143 are provided with sealing strips. The size of the occlusion sliding strip 213 is equivalent to the size of the groove body of the occlusion sliding groove 143, so that the occlusion sliding strip 213 can be smoothly inserted into the occlusion sliding groove 143.

[0081] Further, after the accommodating cavity 3 is filled with nitrogen, the internal air pressure increases, the box cover 2 and the basin body 1 are forced to separate, the box cover 2 and the basin body 1 move reversely, the cover plate body 21 moves upward, and the vertical sealing plug plate 2131 and the horizontal sealing plug plate 2132 connected with the cover plate body 21 move upward. At this time, the upward movement of the cover plate body 21 is limited by the horizontal sealing groove plate 1433, the horizontal sealing groove plate 1433 is connected with the cover plate body 21 and presses the cover plate body 21, forming a fourth sealing surface to achieve a sealing effect; the upward movement of the horizontal sealing plug plate 2132 is limited by the first supporting groove plate 1431, the first supporting groove plate 1431 is connected with the horizontal sealing plug plate 2132 and presses the horizontal sealing plug plate 2132, forming a first sealing surface to achieve a sealing effect. At the same time, because the cover plate body 21 moves away from the basin body 1, the long-side cover plate edge moves back to the direction away from the long-side basin opening edge, and the long-side basin opening edge expands outward due to the increase of the air pressure in the accommodating cavity 3 and moves away from the box cover 2, causing the relative movement between the horizontal sealing plug plate 2132 and the vertical sealing groove plate 1432 and between the vertical sealing plug plate 2131 and the horizontal sealing groove plate 1433, the mutual pressing connection between the horizontal sealing plug plate 2132 and the vertical sealing groove plate 1432 forms a second sealing surface to achieve a sealing effect, and the mutual pressing connection between the vertical sealing plug plate 2131 and the horizontal sealing groove plate 1433 forms a third sealing surface to achieve a sealing effect, thereby realizing the sealing of the occlusion sliding strip 213 and the occlusion sliding groove 143.

[0082] Optionally, the cover plate occlusion plug plate 211 comprises a guide block 2111 connected to the top of one end of the cover plate body 21, for guiding the insertion of the cover plate occlusion plug plate 211 into the basin opening occlusion plug groove 141.

[0083] The basin opening occlusion plug groove 141 comprises a second supporting groove plate 1411, a first horizontal groove plate 1412 and a first vertical groove plate 1413, one side of the second supporting groove plate 1411 is connected to the end face of the basin opening ring 14 perpendicularly, the other side is connected with one side of the first horizontal groove plate 1412, the other side of the first horizontal groove plate 1412 is connected with the first vertical groove plate 1413, and the second supporting groove plate 1411 and the first vertical groove plate 1413 are arranged in parallel.

[0084] When the storage and preservation device for long-term storage of food is in a sealed working condition, the box cover 2 is covered on the basin body 1, the air pressure in the accommodating cavity 3 is greater than the external air pressure, the first vertical groove plate 1413 is connected with the cover plate body 21 to form a fifth sealing surface; the first horizontal groove plate 1412 is connected with the guide block 2111 to form a sixth sealing surface, and the side of the first horizontal groove plate 1412 connected with the guide block 2111 has a sealing strip to enhance the sealing effect.

[0085] After the nitrogen gas is filled in the accommodating cavity 3, the internal air pressure increases, the box cover 2 and the basin body 1 are forced to be separated, the box cover 2 and the basin body 1 move reversely, the cover plate body 21 is bulged upward, the first vertical groove plate 1413 limits the upward movement of the cover plate body 21, and the fifth sealing surface is formed by the mutual extrusion of the two, so that the sealing effect is achieved. At the same time, because the cover plate body 21 moves away from the basin body 1, the head cover plate edge moves back in a direction away from the head basin mouth edge, and the head basin mouth edge moves away from the box cover 2 due to the increase of the air pressure in the accommodating cavity 3, so that the guide block 2111 of the head cover plate edge and the first vertical groove plate 1413 of the head basin mouth edge move towards each other, are extruded and engaged, and the sealing effect is achieved.

[0086] Optionally, the basin mouth engagement clamping groove 142 comprises a second horizontal groove plate 1421 and a third support groove plate 1422, one side of the third support groove plate 1422 is connected with the basin mouth ring 14, the other side is connected with one side of the second horizontal groove plate 1421, the other side of the second horizontal groove plate 1421 protrudes a third support plate and is arranged on the side away from the accommodating cavity 3.

[0087] The cover plate engagement clamping block 211 comprises a vertical sealing clamping block 2121 and a horizontal sealing clamping block 2122, one side of the vertical sealing clamping block 2121 is connected with the cover plate body 21, and the other side is connected with the horizontal sealing clamping block 2122.

[0088] When the storage and preservation device for long-term storage of food is in a sealed working condition, the box cover 2 is covered on the basin body 1, the air pressure in the accommodating cavity 3 is greater than the external air pressure, the horizontal sealing clamping block 2122 is connected with the second horizontal groove plate 1421 to form a seventh sealing surface, the side of the horizontal sealing clamping block 2122 connected with the second horizontal groove plate 1421 can be provided with a sealing strip to enhance the sealing effect, the horizontal sealing clamping block 2122 is connected with the third support groove plate 1422 to form an eighth sealing surface, the side of the horizontal sealing clamping block 2122 connected with the second support groove plate 1411 can be provided with a sealing strip to enhance the sealing effect, and the second horizontal groove plate 1421 is connected with the vertical sealing clamping block 2121 to form a ninth sealing surface. The side of the second horizontal groove plate 1421 connected with the vertical sealing clamping block 2121 can be provided with a sealing strip to enhance the sealing effect.

[0089] Optionally, the tail cover plate edge is provided with a pressing buckle 214, the tail basin mouth edge is provided with a buckle joint 144 matched with the pressing buckle 214, the pressing buckle 214 is matched with the buckle joint 144, and the accommodating cavity 3 is sealed. The pressing buckle 214 and the buckle joint 144 are in a detachable connection form.

[0090] It should be noted that the long side basin opening edge is provided with a first limiting plate 145, which is arranged below the occlusion sliding groove 143 and is used to limit the movement of the long side cover plate edge towards the direction of the top basin 13, specifically, to limit the downward movement of the occlusion sliding strip 213. The first limiting plate 145 can also support the occlusion sliding strip 213 or the cover plate body 21.

[0091] Optionally, the long side basin opening edge is provided with a reinforcing rib 146, one end of which is connected with the long side basin opening edge, and the other end is connected with the first supporting groove plate 1431.

[0092] In one embodiment of the present application, the reinforcing rib 146 is used to prevent the first supporting groove plate 1431 from being deformed due to pressure, thereby affecting the sealing effect.

[0093] It should be noted that the head cover plate edge is provided with a second limiting plate 215, which is arranged above the cover plate occlusion insertion plate 211 and is used to limit the movement of the head basin opening edge away from the direction of the top basin 13.

[0094] In one embodiment of the present application, the second limiting plate 215 can limit the upward movement of the first vertical groove plate 1413 of the head basin opening edge after being deformed due to the extrusion of the cover plate body 21, so as to ensure the sealing effect.

[0095] Optionally, the inflation nozzle 22 is provided with a first one-way valve, and the inflation direction of the first one-way valve is from the outside of the box cover 2 to the inside of the box cover 2. The deflation nozzle 23 is provided with a second one-way valve, and the inflation direction of the second one-way valve is from the inside of the box cover 2 to the outside of the box cover 2.

[0096] It is worth mentioning that the box cover 2 comprises a pressure gauge 24, which is arranged on the cover plate body 21 and is used to show the gas pressure in the containing cavity 3.

[0097] The pressure gauge 24 comprises a gas pressure sensor, which is arranged on the cover plate body 21 and faces the containing cavity 3, and is used to detect the gas pressure in the containing cavity 3. After the pressure gauge 24 reads the data of the gas pressure sensor, the gas pressure value is shown.

[0098] In one embodiment of the present application, the gas pressure gauge is a rechargeable instrument. The operator can control the volume of nitrogen gas filled into the containing cavity 3 according to the pressure gauge 24, and can also regularly read the value of the pressure gauge 24 to judge whether the gas leakage of the storage and preservation device for long-term storage of food provided in one embodiment of the present application exists.

[0099] Optionally, a first sealing strip is arranged on the side of the horizontal sealing plug-in plate 2132 connected with the first supporting groove plate 1431; a second sealing strip is arranged on the side of the horizontal sealing plug-in plate 2132 connected with the vertical sealing groove plate 1432; a third sealing strip is arranged on the side of the vertical sealing plug-in plate 2131 connected with the horizontal sealing groove plate 1433, and a fourth sealing strip is arranged on the side of the horizontal sealing groove plate 1433 connected with the cover plate body 21.

[0100] The first sealing strip, the second sealing strip, the third sealing strip and the fourth sealing strip are all made of a material with high elasticity, such as silica gel, for further sealing the connecting surface or the occlusal surface.

[0101] In some embodiments, the top basin 13, the bottom basin 11 and the cover plate body 21 are all made of a light-transmitting material, such as transparent plastic, for use in a scenario of sterilizing the food by ultraviolet rays.

[0102] In the storage and fresh-keeping device for long-term storage of food provided in Embodiment One of the present application, the guide block 2111 is a triangular prism structure, and the guide block 2111 has an inclined surface, and the cover plate occlusal plug-in plate 211 is inserted into the basin mouth occlusal plug-in groove 141 through the inclined surface.

[0103] Specifically, the cross section of the guide block 2111 can be a right triangle, the inclined surface of the guide block 2111 is used to lift the first vertical groove plate 1413, so that the cover plate occlusal plug-in plate 211 can be smoothly inserted into the basin mouth occlusal plug-in groove 141; one of the planes of the guide block 2111 is connected with the cover plate body 21, and the other plane is in abutment with the first horizontal groove plate 1412, limiting the cover plate occlusal plug-in plate 211 from sliding out of the basin mouth occlusal plug-in groove 141, and in addition, the other plane of the guide block 2111 is in abutment with the first horizontal groove plate 1412 to form a sixth sealing surface.

[0104] Optionally, the box cover 2 is provided with a negative ion releasing device, which can be a negative ion material particle plate, and the negative ion releasing device is arranged on the cover plate body 21 and located on the inner side of the cover plate body 21 of the box cover 2, and is arranged to face the direction of the bottom basin 11 and release negative ions into the containing cavity 3. The negative ions released by the negative ion releasing device can combine with the oxygen not exhausted in the containing cavity 3 and play a role in purifying the air. In a relatively closed space such as a cabin, the negative ion releasing device of the box cover 2 of the storage and fresh-keeping device for long-term storage of food provided in Embodiment One of the present application can also be used to release negative ions and purify the air in the closed space.

[0105] Embodiment Two

[0106] The application embodiment two provides a use method of the storage fresh-keeping device for long-term storage of food, which is suitable for the storage fresh-keeping device for long-term storage of food provided in the above-mentioned application embodiment one, and includes the following steps: pulling the bottom basin 11, unfolding the folding ring 12, and separating the bottom basin 11 from the top basin 13; placing the required fresh-keeping product into the containing cavity 3; covering the box cover 2 on the basin body 1; respectively inserting the two occlusion sliding strips 213 of the box cover 2 into the two occlusion sliding grooves 143 of the basin body 1, inserting the cover plate occlusion plug plate 211 into the basin mouth occlusion plug slot 141, and inserting the cover plate occlusion clamping block 211 into the basin mouth occlusion clamping slot 142; opening the air inlet nozzle 22 and the air outlet nozzle 23, and filling nitrogen into the containing cavity 3 through the air inlet nozzle 22; closing the air outlet nozzle 23, continuously filling nitrogen into the containing cavity 3 through the air inlet nozzle 22, and then closing the air inlet nozzle 22; and placing the storage fresh-keeping device for long-term storage of food in a low-temperature environment for preservation.

[0107] In addition, in the description of the application embodiments, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, and can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0108] In the description of the application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0109] Finally, it should be noted that: the above embodiments are only specific embodiments of the application, which are used to illustrate the technical solutions of the application, and are not limiting, the protection scope of the application is not limited thereto, although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand: any person skilled in the art within the technical range disclosed by the application, still can modify or easily think of the change of the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical scheme deviate from the spirit and scope of the technical scheme of the application embodiments, and all should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A storage and preservation device for long-term storage of food, characterized in that: It includes a basin body, a box cover and a receiving cavity, wherein: The box cover is covered on the basin body to form the accommodating cavity; The basin body includes a bottom basin, a folding ring, a top basin and a basin mouth ring; The bottom of the folding ring is connected between the bottom basin and the top basin, and is used to fold and store the basin body; The basin mouth ring is connected to the top basin, and the basin body is detachably connected to the box cover through the basin mouth ring; The basin opening ring is provided with a head basin opening edge, a tail basin opening edge and two long side basin opening edges; The head basin edge is provided with a basin edge bite slot, the tail basin edge is provided with a basin edge bite slot, and the two long side basin edges are provided with bite slide grooves; The engaging groove includes a first supporting groove plate, a vertical sealing groove plate and a horizontal sealing groove plate. The first supporting groove plate is horizontally arranged, and one side of the first supporting groove plate is connected to the basin ring, and the other side is connected to one side of the vertical sealing groove plate. The other side of the vertical sealing groove plate is connected to the horizontal sealing groove plate. The horizontal sealing groove plate is parallel to the first supporting groove plate, and one side of the horizontal sealing groove plate protrudes from the vertical sealing groove plate toward the direction of the basin ring. The basin mouth engaging slot includes a second horizontal slot plate and a third supporting slot plate. One side of the third supporting slot plate is pre-connected to the basin mouth ring, and the other side is connected to one side of the second horizontal slot plate. The other side of the second horizontal slot plate protrudes from the third supporting slot plate and is arranged toward a side away from the direction where the accommodating cavity is located. The box cover includes a cover body, an inflation nozzle, and a deflation nozzle; The inflation nozzle and the deflation nozzle are both arranged on the cover body; The inflation nozzle penetrates the cover body in the thickness direction of the cover body and is used to fill nitrogen into the accommodating cavity to increase the air pressure in the accommodating cavity; The air release nozzle penetrates the cover body in the thickness direction of the cover body, and is used to discharge the gas in the accommodating cavity out of the accommodating cavity to reduce the air pressure in the accommodating cavity; The cover plate body is provided with a head cover plate edge, a tail cover plate edge and two long side cover plate edges; The edge of the head cover plate is provided with a cover plate bite plug matching the basin mouth bite slot, the edge of the tail cover plate is provided with a cover plate bite block matching the basin mouth bite slot, and the edges of the two long side cover plates are respectively provided with bite slides matching the two bite slide grooves; The engaging slide includes a vertical sealing plate and a horizontal sealing plate. One side of the vertical sealing plate is vertically connected to the cover body, and the other side is vertically connected to the horizontal sealing plate. The horizontal sealing plate is arranged parallel to the cover body, and one side of the horizontal sealing plate protrudes from the vertical sealing plate toward the direction of the cover body. When the storage and preservation device for long-term food storage is in the closed state, the box cover is closed on the basin body, the air pressure in the accommodating cavity is lower than or equal to the external air pressure, the engaging slide is inserted into the engaging slide groove, the cover plate engaging insert is inserted into the basin mouth engaging slot, and the cover plate engaging clamp is inserted into the basin mouth engaging slot; When the storage and preservation device for long-term storage of food is in a sealed working condition, the box lid is closed on the basin body, the air pressure in the accommodating cavity is greater than the external air pressure, the bite slide is sealingly engaged with the bite groove, so that the bite slide is sealed with the bite groove; the cover plate bite plug is sealingly engaged with the basin mouth bite slot, so that the cover plate bite plug is sealed with the basin mouth bite slot; the cover plate bite block is sealingly engaged with the basin mouth bite slot, so that the cover plate bite block is sealed with the basin mouth bite slot.

2. The storage and preservation device for long-term storage of food according to claim 1, characterized in that: When the storage and preservation device for long-term storage of food is in a sealed condition, the box lid is closed on the basin body, the air pressure in the accommodating cavity is greater than the external air pressure, the horizontal sealing plug plate is connected to the first supporting groove plate to form a first sealing surface; the horizontal sealing plug plate is connected to the vertical sealing groove plate to form a second sealing surface; the horizontal sealing groove plate is connected to the vertical sealing plug plate to form a third sealing surface, and the horizontal sealing groove plate is connected to the cover plate body to form a fourth sealing surface.

3. The storage and preservation device for long-term storage of food according to claim 1, characterized in that: The cover plate engaging plug includes a guide block connected to the top of one end of the cover plate body, and is used to guide the cover plate engaging plug to be inserted into the basin mouth engaging slot; The basin mouth engaging slot includes a second supporting slot plate, a first horizontal slot plate and a first vertical slot plate, one side of the second supporting slot plate is vertically connected to the end surface of the basin mouth ring, and the other side is connected to one side of the first horizontal slot plate, the other side of the first horizontal slot plate is connected to the first vertical slot plate, and the second supporting slot plate is arranged parallel to the first vertical slot plate; When the storage and preservation device for long-term storage of food is in a sealed condition, the box lid is closed on the basin body, the air pressure in the accommodating cavity is greater than the external air pressure, the first vertical groove plate is connected to the cover plate body to form a fifth sealing surface; the first horizontal groove plate is connected to the guide block to form a sixth sealing surface.

4. The storage and preservation device for long-term storage of food according to claim 1, characterized in that: The cover plate engaging block includes a vertical sealing block and a horizontal sealing block, one side of the vertical sealing block is connected to the cover plate body, and the other side is connected to the horizontal sealing block; When the storage and preservation device for long-term storage of food is in a sealed condition, the box lid is closed on the basin body, the air pressure in the accommodating cavity is greater than the external air pressure, the horizontal sealing block is connected to the second horizontal groove plate to form a seventh sealing surface; the horizontal sealing block is connected to the third support groove plate to form an eighth sealing surface; the second horizontal groove plate is connected to the vertical sealing block to form a ninth sealing surface.

5. The storage and preservation device for long-term storage of food according to claim 1, characterized in that: The edge of the tail cover plate is provided with a press buckle, and the edge of the tail basin mouth is provided with a buckle joint matching the press buckle. The press buckle cooperates with the buckle joint to seal the accommodating cavity.

6. The storage and preservation device for long-term storage of food according to claim 1, characterized in that: A first limiting plate is provided on the edge of the long side basin mouth, and the first limiting plate is arranged below the bite slide groove, and is used to limit the edge of the long side cover plate from moving toward the direction of the top basin.

7. The storage and preservation device for long-term storage of food according to claim 2, characterized in that: A reinforcing rib is provided on the edge of the long side basin mouth, one end of the reinforcing rib is connected to the edge of the long side basin mouth, and the other end is connected to the first supporting groove plate.

8. The storage and preservation device for long-term food storage according to claim 1, characterized in that: The edge of the head cover is provided with a second limiting plate, which is arranged above the cover bite plug plate and is used to limit the edge of the head basin mouth from moving in a direction away from the top basin.

9. The storage and preservation device for long-term food storage according to claim 1, characterized in that: The inflation nozzle is provided with a first one-way valve, and the conduction direction of the first one-way valve is from the outside of the box cover to the inside of the box cover. The deflation nozzle is provided with a second one-way valve, and the conduction direction of the second one-way valve is from the inside of the box cover to the outside of the box cover.

10. The storage and preservation device for long-term food storage according to claim 1, characterized in that: The box cover includes a pressure gauge, which is arranged on the cover body and is used to display the gas pressure in the accommodating cavity.

11. The storage and preservation device for long-term storage of food according to claim 2, characterized in that: A first sealing strip is provided on the side of the horizontal sealing plug plate connected to the first supporting groove plate; a second sealing strip is provided on the side of the horizontal sealing plug plate connected to the vertical sealing groove plate; a third sealing strip is provided on the side of the vertical sealing plug plate connected to the horizontal sealing groove plate, and a fourth sealing strip is provided on the side of the cover plate body connected to the horizontal sealing groove plate.

12. The storage and preservation device for long-term food storage according to claim 1, characterized in that: The top basin, the bottom basin and the cover body are all made of light-transmitting materials.

13. The storage and preservation device for long-term food storage according to claim 3, characterized in that: The guide block is a triangular prism structure, and the guide block has an inclined surface, and the cover plate engaging plug is inserted into the basin mouth engaging slot through the inclined surface.

14. The storage and preservation device for long-term food storage according to claim 1, characterized in that: The box cover is provided with a negative ion releasing device, which is arranged on the cover body and located on the inner side of the cover body.

15. A method for using the storage and preservation device for long-term food storage according to any one of claims 1 to 14, characterized in that: The following steps are involved: S1: Pull the bottom basin and unfold the folding ring to separate the bottom basin from the top basin; S2: Place the desired fresh food into the storage cavity; S3: Close the box cover on the basin body: fully insert the two engaging slides of the box cover into the two engaging slide grooves of the basin body, insert the cover plate engaging insert into the basin mouth engaging slot, and insert the cover plate engaging block into the basin mouth engaging slot; S4: opening the inflation nozzle and the deflation nozzle, and filling nitrogen into the accommodating cavity through the inflation nozzle; S5: closing the deflation nozzle, continuously filling nitrogen into the accommodating cavity through the inflation nozzle, and then closing the inflation nozzle; S6: The storage and preservation device for long-term food storage is placed in a low-temperature environment.

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