Collapsible preservation containers for controlled atmosphere storage of lychees
By designing a foldable lychee preservation container, the problem of wasted space in traditional containers was solved, achieving efficient space utilization and reduced transportation costs, thus ensuring the preservation effect of lychees.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HAINAN JINLONGWANG AGRI DEV CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-06-30
AI Technical Summary
The fixed structure of traditional lychee preservation containers takes up a lot of space when returning empty or in storage, which increases transportation costs. They also occupy too much space when stored in cold storage, which affects logistics efficiency.
A foldable preservation container was designed, which adopts a structure including a lid, body, telescopic components and connecting blocks. The container is foldable by screw rods and limiting blocks. Combined with the support and fixation of telescopic rods and springs, it reduces space occupation. A gas mixing device provides preservation gas to prevent damage to lychees.
It improves space utilization, reduces transportation and storage costs, minimizes damage to lychees during transportation, and enhances logistics efficiency and preservation.
Smart Images
Figure CN224428393U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fresh-keeping storage boxes, and in particular to a foldable fresh-keeping container for modified atmosphere storage of lychees. Background Technology
[0002] Lychee, a typical climacteric fruit, has a thin peel and abundant juice, making it susceptible to mechanical damage and microbial infection, leading to rot. Furthermore, the lychee peel contains abundant polyphenol oxidase and peroxidase, key enzymes for peel browning. Browning begins when the peel loses about 50% of its water content, resulting in a loss rate as high as 30-40% during storage and transportation. Traditional preservation containers mostly use fixed structures, making them unsuitable for diverse storage and transportation scenarios from production areas to sales terminals. With the development of cold chain logistics systems, new requirements have been placed on preservation containers for high space utilization and ease of multimodal transport.
[0003] Currently, two main types of containers are used for the storage and transportation of lychees: one is injection-molded plastic crates, which are stacked using a snap-fit structure and have ice packs placed inside for cooling; the other is fixed preservation boxes with a metal frame and PE inner liner, equipped with simple ventilation holes. However, these traditional containers have a problem affecting logistics efficiency: the fixed structure occupies too much space when returning empty or during warehousing, leading to an increase in transportation costs of over 40%. When stored in cold storage, the empty box occupies 3-4 times the area of the folded box. This space waste makes container transportation account for as much as 25% of cold chain logistics costs, restricting the long-distance sales radius of fresh agricultural products such as lychees. Therefore, a foldable preservation container for controlled atmosphere storage of lychees is proposed to solve the above problems. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a foldable preservation container for modified atmosphere storage of lychees, aiming to improve the problem that the fixed structure occupies too much space when returning empty or in storage, resulting in an increase in transportation costs of more than 40%, and that when stored in cold storage, the empty box occupies 3-4 times the area of the folded state.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a foldable preservation container for modified atmosphere storage of lychees, including a lid, a box body slidably connected to the lower surface of the lid, an air inlet and an air outlet symmetrically arranged inside the box body, a connecting block one and a connecting block two fixedly connected to one side of the outer wall of the box body, a lead screw rotatably connected to the inner walls of the connecting block one and the connecting block two, a limit block threadedly connected to the outer wall of the lead screw, and a telescopic component provided inside the box body;
[0006] The telescopic assembly includes a second tension tube, a first telescopic rod, and a second telescopic rod. The outer wall of the second tension tube is fixedly connected to the inside of the box. One end of the first telescopic rod is fixedly connected to the inner wall of the box. One end of the second telescopic rod is fixedly connected to the inner wall of the box. The outer wall of the first telescopic rod is slidably connected to the inside of the second telescopic rod. A first telescopic spring is installed inside the second telescopic rod. The other end of the first telescopic rod is fixedly connected to one end of the first telescopic spring. The first tension tube is installed inside the box cover.
[0007] Furthermore, a sealing block is fixedly connected inside the box cover, and the outer wall of the sealing block is slidably connected to the inner wall of the box.
[0008] Furthermore, a connecting frame is fixedly connected inside the box, and a placement box is fixedly connected to one side of the outer wall of the connecting frame.
[0009] Furthermore, a protective cover is slidably connected inside the connecting frame, a placement plate is slidably connected to the lower surface of the protective cover, and the outer wall of the placement plate is slidably connected inside the connecting frame.
[0010] Furthermore, a second fixing block is fixedly connected to the other side of the outer wall of the connecting frame, and a first fixing block is fixedly connected to one side of the outer wall of the second fixing block.
[0011] Furthermore, a connecting rod is fixedly connected to one side of the outer wall of the fixing block, and a telescopic spring is provided on the outer wall of the connecting rod.
[0012] Furthermore, one end of the telescopic spring is fixedly connected to the connecting block three, and the outer wall of the connecting rod is slidably connected inside the connecting block three.
[0013] Furthermore, the connecting block three is fixedly connected inside the box, and the other end of the telescopic spring two is fixedly connected to the outer wall of the fixing block one.
[0014] This utility model has the following beneficial effects:
[0015] 1. In this utility model, when telescopic folding is required, the first and second telescopic tubes can support telescopic folding, thereby reducing space usage. The first and second telescopic rods are internally supported and fixed. The first telescopic rod compresses and tightens the first telescopic spring inside the second telescopic rod. By rotating the screw, the limiting block inside the first and second connecting blocks is tightened and fixed, which can reduce the placement space, improve the space utilization rate, and thus improve the practicality of the device.
[0016] 2. In this utility model, lychees are placed on top of the placement plate and covered with a protective cover to prevent them from being shaken out during transportation. A connecting frame is used to fix the protective cover and the placement plate. Ice packs can be placed inside the placement box. The connecting frame is connected by a fixing block two. The telescopic spring two on the fixing block one is used to buffer the shaking that occurs during transportation. The connecting block three is fixed inside the box, and the connecting rod slides inside the connecting block three to prevent internal collisions that could damage the lychees and cause them to spoil, thus improving the practicality of the device. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the foldable preservation container for modified atmosphere storage of lychees proposed in this utility model.
[0018] Figure 2 This is a schematic diagram of the air outlet portion of the foldable preservation container for modified atmosphere storage of lychees proposed in this utility model.
[0019] Figure 3 This is a schematic diagram of the two-section structure of the telescopic rod of the foldable preservation container for modified atmosphere storage of lychees proposed in this utility model.
[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the foldable preservation container for modified atmosphere storage of lychees proposed in this utility model.
[0021] Figure 5 This is a schematic diagram of the three-section structure of the connecting block of the foldable preservation container for modified atmosphere storage of lychees proposed in this utility model.
[0022] Figure 6 for Figure 5 Enlarged view of point A in the image.
[0023] Legend:
[0024] 1. Box lid; 2. Tension tube one; 3. Air inlet; 4. Box body; 5. Limiting block; 6. Connecting block one; 7. Lead screw; 8. Tension tube two; 9. Connecting block two; 10. Sealing block; 11. Telescopic rod one; 12. Telescopic rod two; 13. Air outlet; 14. Protective cover; 15. Telescopic spring one; 16. Connecting frame; 17. Placement box; 18. Placement plate; 19. Connecting block three; 20. Connecting rod; 21. Telescopic spring two; 22. Fixing block one; 23. Fixing block two. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Reference Figures 1-3 This utility model provides an embodiment of a foldable preservation container for modified atmosphere storage of lychees, including a lid 1. The lid 1 serves to connect to the stretching tube 2, providing a basic sealing frame for the entire container. A box body 4 is slidably connected to the lower surface of the lid 1. The box body 4 provides a space for placing lychees and for modified atmosphere storage. The box body 4 has an air inlet 3 and an air outlet 13 symmetrically arranged on the left and right sides. The required proportion of preservation gas mixed by a gas mixing device is injected into the box body 4 through the air inlet 3. A connecting block 6 and a connecting block 9 are fixedly connected to one side of the outer wall of the box body 4. The connecting block 6 and the connecting block 9 cooperate with the screw rod 7 and the limiting block 5. The screw rod 7 is turned and fixed by the limiting block 5 to fix the length of the box body 4. The screw rod 7 is rotatably connected to the inner wall of the connecting block 6 and the connecting block 9. The limiting block 5 is threadedly connected to the outer wall of the screw rod 7. A telescopic component is provided inside the box body 4.
[0027] The telescopic assembly includes a second tension tube 8, a first telescopic rod 11, and a second telescopic rod 12. The outer wall of the second tension tube 8 is fixedly connected to the inside of the housing 4. The first tension tube 11 and the second tension tube 8 are made of relatively soft materials, allowing for stretching and compression. One end of the first telescopic rod 11 is fixedly connected to the inner wall of the housing 4, and one end of the second telescopic rod 12 is fixedly connected to the inner wall of the housing 4. The outer wall of the first telescopic rod 11 is slidably connected to the inside of the second telescopic rod 12. The first telescopic rod 11 and the second telescopic rod 12 provide certain support and fixation inside the housing 4. The part is equipped with a telescopic spring 15, which has a certain elastic restoring force. The other end of the telescopic rod 11 is fixedly connected to one end of the telescopic spring 15. The inside of the box cover 1 is equipped with a tension tube 2, and a sealing block 10 is fixedly connected inside the box cover 1. The sealing block 10 cooperates with the box cover 1 and the box body 4 to form a certain sealed space inside. The outer wall of the sealing block 10 is slidably connected to the inner wall of the box body 4. By stretching the tension tube 2 and the tension tube 8, placement plates 18 of different lengths can be placed inside.
[0028] Reference Figure 2 , Figure 4 , Figure 5 and Figure 6Inside the box 4, a connecting frame 16 is fixedly connected. A placement box 17 is fixedly connected to one side of the outer wall of the connecting frame 16. The placement box 17 holds ice packs. A protective cover 14 is slidably connected inside the connecting frame 16 to prevent the lychees from being shaken out during transport. A placement plate 18 is slidably connected to the lower surface of the protective cover 14 to hold the lychees. The outer wall of the placement plate 18 is slidably connected to the inside of the connecting frame 16. A fixing block 23 is fixedly connected to the other side of the outer wall of the connecting frame 16. The fixing block 23 is fixed to one side of its outer wall. A fixing block 22 is connected, and a connecting rod 20 is fixedly connected to one side of the outer wall of the fixing block 22. A telescopic spring 21 is provided on the outer wall of the connecting rod 20. The telescopic spring 21 has a certain elastic restoring force to buffer the shaking that occurs during transportation. One end of the telescopic spring 21 is fixedly connected to a connecting block 3 19. The outer wall of the connecting rod 20 is slidably connected to the inside of the connecting block 3 19 to prevent internal collisions that could cause damage to the lychees and lead to spoilage. The connecting block 3 19 is fixedly connected to the inside of the box 4, and the other end of the telescopic spring 21 is fixedly connected to the outer wall of the fixing block 22.
[0029] Working principle: When using a collapsible modified atmosphere storage container for lychees to preserve them, place the lychees on top of the placement plate 18. Covering with the protective cover 14 prevents the lychees from being shaken out during transport. The connecting frame 16 secures the protective cover 14 and the placement plate 18. Ice packs can be placed inside the placement box 17. The connecting frame 16 is connected by a fixing block 23. The telescopic spring 21 on the fixing block 22 cushions the shaking that occurs during transport. The connecting block 3 19 is fixed inside the box 4, and the connecting rod 20 slides inside the connecting block 3 19 to prevent internal collisions that could cause the lychees to fall out. When branches are wounded or spoiled, a gas mixing device mixes the required proportion of preservative gas and fills the box 4 through the air inlet 3. The sealing block 10 under the lid 1 is tightly connected to the inner wall of the box 4 to achieve a sealing effect. When internal ventilation is required, the gas is released from the air outlet 13. When extension and folding are required, the extension tube 2 and extension tube 8 can support extension and folding. The extension spring 15 inside the extension rod 12 is squeezed and tightened by the extension rod 11. By rotating the screw 7, the limiting block 5 is tightened and fixed inside the connecting block 6 and connecting block 9, which can reduce the placement space.
[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A foldable fresh-keeping container for modified atmosphere storage of litchi, comprising a box cover (1), characterized in that: The box cover (1) is slidably connected to the box body (4). The box body (4) is symmetrically provided with an air inlet (3) and an air outlet (13) on the left and right sides. A connecting block one (6) and a connecting block two (9) are fixedly connected to one side of the outer wall of the box body (4). A screw rod (7) is rotatably connected to the inner wall of the connecting block one (6) and the connecting block two (9). A limit block (5) is threadedly connected to the outer wall of the screw rod (7). A telescopic component is provided inside the box body (4). The telescopic assembly includes a second tension tube (8), a first telescopic rod (11), and a second telescopic rod (12). The outer wall of the second tension tube (8) is fixedly connected to the inside of the box (4). One end of the first telescopic rod (11) is fixedly connected to the inner wall of the box (4). One end of the second telescopic rod (12) is fixedly connected to the inner wall of the box (4). The outer wall of the first telescopic rod (11) is slidably connected to the inside of the second telescopic rod (12). A first telescopic spring (15) is provided inside the second telescopic rod (12). The other end of the first telescopic rod (11) is fixedly connected to one end of the first telescopic spring (15). The inside of the box cover (1) is provided with a first tension tube (2).
2. The foldable preservation container for controlled atmosphere storage of lychees according to claim 1, characterized in that: A sealing block (10) is fixedly connected inside the box cover (1), and the outer wall of the sealing block (10) is slidably connected to the inner wall of the box body (4).
3. The foldable preservation container for controlled atmosphere storage of lychees according to claim 2, characterized in that: The box (4) is fixedly connected to a connecting frame (16), and a placement box (17) is fixedly connected to one side of the outer wall of the connecting frame (16).
4. The foldable preservation container for controlled atmosphere storage of lychees according to claim 3, characterized in that: The connecting frame (16) is slidably connected to a protective cover (14), and a placement plate (18) is slidably connected to the lower surface of the protective cover (14). The outer wall of the placement plate (18) is slidably connected to the inside of the connecting frame (16).
5. The foldable preservation container for controlled atmosphere storage of lychees according to claim 4, characterized in that: A fixing block two (23) is fixedly connected to the other side of the outer wall of the connecting frame (16), and a fixing block one (22) is fixedly connected to one side of the outer wall of the fixing block two (23).
6. The foldable preservation container for controlled atmosphere storage of lychees according to claim 5, characterized in that: A connecting rod (20) is fixedly connected to one side of the outer wall of the fixing block (22), and a telescopic spring (21) is provided on the outer wall of the connecting rod (20).
7. The foldable preservation container for controlled atmosphere storage of lychees according to claim 6, characterized in that: One end of the telescopic spring 2 (21) is fixedly connected to the connecting block 3 (19), and the outer wall of the connecting rod (20) is slidably connected to the inside of the connecting block 3 (19).
8. The foldable preservation container for controlled atmosphere storage of lychees according to claim 7, characterized in that: The connecting block three (19) is fixedly connected inside the box (4), and the other end of the telescopic spring two (21) is fixedly connected to the outer wall of the fixing block one (22).