Nucleopore membrane assembly and spontaneous modified atmosphere packaging device

Abstract

The application discloses a nuclear pore membrane assembly which comprises a nuclear pore membrane assembly body, the nuclear pore membrane assembly body comprising a ring-shaped supporting member A, a nuclear pore membrane device, a nail and a nut; an outwardly protruding edge is arranged on one end of the supporting member A along the circumferential direction; a nail fixing part A is arranged on the edge, a through hole is formed on the nail fixing part A, the through hole being capable of allowing a nail body to pass through and capable of blocking a nail cap; the nail is provided with a thread, and the nut is matched with the nail; a supporting part A for placing the nuclear pore membrane device is arranged on the inner ring of the supporting member A; and the nuclear pore membrane device is detachably installed in the space surrounded by the inner ring wall of the edge end of the supporting member A and the supporting part. The application further discloses a spontaneous type modified atmosphere fresh-keeping and living-keeping device based on the nuclear pore membrane assembly. The application realizes firm and simple installation of the nuclear pore membrane device in a thick material box represented by a foam box.

Description

Technical Field

[0001] This invention belongs to the field of food preservation and liveliness maintenance, specifically relating to a nuclear pore membrane assembly and a self-generating modified atmosphere preservation and liveliness maintenance device. Background Technology

[0002] During use, the gas concentration inside the food storage box needs to be adjusted to reduce or control the respiration intensity of the fresh produce, thereby extending the shelf life or freshness of the produce.

[0003] Nuclear pore membranes are thin film materials with special pore sizes and shapes. They utilize the powerful penetrating force generated by the acceleration of atomic nuclei in high-energy accelerators, combined with cutting-edge chemical technology, to create dense, uniformly sized, or otherwise porous PET films. As a high-precision microporous material, nuclear pore membranes have been applied in various fields related to people's lives, including medical, pharmaceutical, environmental protection, food chemical, cell detection membranes, and analysis, especially in gas filtration (such as nuclear pore membrane masks and anti-smog window screens) and food preservation. When used in food preservation, their function is to control the respiration, air permeability, moisture permeability, waterproofing, and microbial entry of fruits, vegetables, and aquatic products through micropore parameters. Nuclear pore membranes can regulate the oxygen, carbon dioxide, and moisture content around the preserved product, thereby reducing or controlling the respiration intensity of the preserved product and blocking dust, thus maintaining the quality of the preserved product, reducing losses, and extending the storage and shelf life.

[0004] Existing technology discloses an invention patent with application number 202121937272.6 and patent title "A Weld-Free Ventilation Device for a Food Storage Box". This patent discloses a detachable mother component, a daughter component, and a ventilation device (i.e., a nucleopore membrane device) installed between the mother component and the daughter component. The mother component and the food storage box can be pre-molded as a single unit, facilitating the assembly and disassembly of the daughter component; or it can be applied to boxes with thick, highly elastic materials such as foam boxes, with pre-reserved ventilation openings, and connected to the pre-reserved openings through an interference fit. However, pre-molding as a single unit brings difficulties to the manufacturing of the box; relying solely on an interference fit may cause the nucleopore membrane to detach from the box, and the processing precision requirements for the pre-reserved openings are high.

[0005] Foam boxes are commonly used transport containers for live seafood, fruits, and vegetables. A key challenge is how to achieve a robust and easy installation of the nucleopore membrane preservation device within these thick-material boxes, typically foam boxes. Furthermore, live seafood and fresh fruits and vegetables in environments with significant temperature differences will produce small water droplets inside the box due to respiration. Additionally, some boxes for fruits, vegetables, or live seafood may have a cooling source inside, which can lead to condensation under large temperature variations. When this moisture accumulates to a certain amount, it will slide down the box walls, potentially adhering to the nucleopore membrane and affecting the device's ability to regulate the respiration of fruits, vegetables, and live seafood. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention designs a nuclear pore membrane assembly and a self-generating modified atmosphere preservation device. The nuclear pore membrane assembly of this invention is suitable for thick-material boxes, such as foam boxes, and achieves a robust and easy installation of the nuclear pore membrane assembly.

[0007] The details are as follows: One of the objectives of this invention is to disclose a nuclear pore membrane assembly, which includes a nuclear pore membrane assembly body, wherein the nuclear pore membrane assembly body includes an annular support A, a nuclear pore membrane device, a through pin, and a nut; One end of the support member A has an outwardly protruding edge along its circumference; the edge is provided with a through-pin fixing part A, and the through-pin fixing part A has a through hole that allows the body of the through-pin to pass through and can block the head of the through-pin. The through-pin has threads on its body, and the nut is adapted to fit the through-pin; The support member A has a support part A inside the ring for placing the nuclear pore membrane device; the nuclear pore membrane device can be detachably installed in the space enclosed by the inner ring wall of the edge end of the support member A and the support part.

[0008] Preferably, the nuclear pore membrane device includes a mother component and a daughter component, the daughter component being detachably mounted on the mother component. Both the mother component and the daughter component are provided with vent holes, and a nuclear pore membrane is installed between the daughter component and the mother component. For details, please refer to the invention patent with application number 202121937272.6 and patent title "A Weld-Free Ventilation Device for a Food Storage Box".

[0009] The aforementioned nucleopore membrane assembly is suitable for thick-material boxes, such as foam boxes. Taking a foam box as an example, the specific usage method is as follows: An opening matching the size of the nucleopore membrane assembly is pre-drilled on the food storage box, preferably with an interference fit between the opening and the assembly; the nucleopore membrane device is installed on support A, then, holding the edge of the assembly body, it is inserted into the opening from the outside of the box, with the edge obstructing the opening; at this point, a through-hole pin is inserted through the through-hole of the pin fixing part A, piercing the foam box, and then a nut is installed from inside the box onto the through-hole pin to secure it, thus achieving a firm installation of the nucleopore membrane assembly.

[0010] Furthermore, the edge of the support member A is provided with a limiting protrusion corresponding to the nuclear pore membrane device. The limiting protrusion can prevent the snap-fit ​​nuclear pore membrane device from falling off the support member A, making the structure more robust. Preferably, there are several limiting protrusions, which are evenly arranged circumferentially along the inner annular wall of the edge end.

[0011] Furthermore, the nuclear pore membrane device is installed in the space enclosed by the inner ring wall of the edge end of the support member A and the support portion by an interference fit.

[0012] Furthermore, the pin fixing part A is preferably provided in two parts, with through holes symmetrically arranged on it; two pins are provided accordingly.

[0013] Furthermore, when the nucleopore membrane module is installed in the pre-reserved opening on the box, its end furthest from the edge can extend out of the box wall and into the inner cavity of the box. Live aquatic products and fresh fruits and vegetables, due to respiration in environments with large temperature differences, will produce small water droplets inside the box; and some fruit and vegetable or live aquatic product boxes may have a cold source inside, which can lead to condensation under large temperature differences. When these two sources of moisture accumulate to a certain amount, they will slide down the box wall, and this sliding moisture may adhere to the nucleopore membrane, affecting the nucleopore membrane device's function of regulating the respiration of fruits, vegetables, and live aquatic products. When the nucleopore membrane module is installed on the side wall of the box, the part extending out of the pre-reserved opening forms a "waterproof eaves," effectively preventing condensation from falling onto the nucleopore membrane.

[0014] Furthermore, the nuclear pore membrane assembly also includes a waterproof component; the waterproof component has a perforated section and can be detachably installed onto a pre-reserved opening in the housing. As mentioned earlier, while the "waterproof eaves" of the nuclear pore membrane assembly extending into the housing can also provide waterproofing, they are not suitable for fruits and leafy vegetables with delicate skins, such as cherries, strawberries, blueberries, spinach, and toon, as they may cause damage. The waterproof component solves this problem. The waterproof component is installed from inside the housing into the pre-reserved opening, therefore both the waterproof component and the nuclear pore membrane assembly body need to be adapted to the housing wall, requiring that the waterproof component and the nuclear pore membrane assembly body can be installed simultaneously into the pre-reserved opening. The waterproof component, located inside the housing, prevents condensation from contacting the nuclear pore membrane. The perforated section on the waterproof component does not affect the breathability of the nuclear pore membrane. Preferably, the waterproof component is connected to the pre-reserved opening with an interference fit.

[0015] Furthermore, the aforementioned waterproof components can be improved as follows: The waterproof component includes a waterproof sheet and an annular support member B; the waterproof sheet has a hollowed-out portion; one end of the support member B has an outwardly protruding edge along its circumference; the inner part of the ring of the support member B is provided with a support portion B for placing the waterproof sheet; the waterproof sheet is detachably installed in the space enclosed by the inner ring wall of the edge end of the support member B and the support portion B.

[0016] Furthermore, the aforementioned waterproof components can be improved as follows: The waterproof component is equipped with a through-hole fixing part B, which is adapted to accommodate the through-hole of the through-hole. After the nuclear pore membrane assembly body is installed in the reserved opening, the nut is not installed first. The waterproof component is installed in the reserved opening from inside the housing, allowing the through-hole of the through-hole fixing part B to pass through, and then the nut is used to fix the through-hole. This arrangement makes the installation of the waterproof component more stable, further reinforces the nuclear pore membrane assembly body, and positions the through-hole, preventing the through-hole from moving within the drilled hole and causing instability that could damage the housing, thus helping to maintain the housing's airtightness.

[0017] The second objective of this invention is to provide a self-generating modified atmosphere preservation and live preservation device based on the above-mentioned nuclear pore membrane assembly, which includes a housing with one or more reserved openings on the housing, and the above-mentioned nuclear pore membrane assembly can be detachably installed on the reserved openings.

[0018] The above-mentioned nuclear pore membrane module is applied to the preservation box, which is suitable for the preservation and keeping fresh fruits and vegetables such as cherries, strawberries, and blueberries, as well as aquatic products such as hairy crabs, swimming crabs, oysters, crayfish, and king crabs.

[0019] Furthermore, the box body is made of foam material.

[0020] The beneficial effects of this invention are as follows: This invention enables the robust and convenient installation of the nucleopore membrane device in thick-material boxes, such as foam boxes, effectively preventing the nucleopore membrane assembly from detaching. Furthermore, the inclusion of a "waterproof eave" or waterproof components effectively prevents condensation from falling onto the nucleopore membrane. When installed in a preservation box, the nucleopore membrane assembly can maintain the quality of live aquatic products and fresh fruits and vegetables, reduce losses, extend storage and shelf life, and improve the survival rate of live aquatic products by regulating their respiration. Attached Figure Description

[0021] Figure 1 This is a top view of the nuclear pore membrane assembly in Example 1; Figure 2 This is a bottom view of the nuclear pore membrane assembly in Example 1; Figure 3 This is a schematic front cross-sectional view of the nuclear pore membrane assembly in Example 1; Figure 4 This is a cross-sectional view of the nuclear pore membrane assembly installed in the housing in Example 1; Figure 5 This is a front view schematic diagram of the nuclear pore membrane assembly body in Example 2; Figure 6 This is a schematic front cross-sectional view of the nuclear pore membrane assembly body in Example 2; Figure 7 This is a top view of the waterproof component in Example 2; Figure 8 This is a schematic front cross-sectional view of the waterproof component in Example 2; Figure 9 This is a cross-sectional view of the nuclear pore membrane assembly installed in the housing in Example 2; Figure 10 This is a top view of the waterproof component in Example 3; Figure 11 This is a schematic diagram of the spontaneous modified atmosphere preservation and live preservation device in Example 4; In the picture: 1. Nuclear pore membrane assembly body; 1-1. Support A; 1-1-1. Through-pin fixing part A; 1-1-2. Support A; 1-1-3. Limiting protrusion; 1-2. Nuclear pore membrane device; 1-2-1. Female part; 1-2-2. Female part; 1-3. Through-pin; 1-4. Nut; 2. Waterproof components; 2-1. Support component B; 2-1-1. Through-nail fixing part B; 2-1-2. Support component B; 2-2. Waterproof membrane; 3. Box body. Detailed Implementation

[0022] The principles and features of the present invention are described below with reference to examples. The examples are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0023] Example 1 A nuclear pore membrane assembly, such as Figures 1-4 As shown, it includes a nuclear pore membrane assembly body 1, which includes an annular support A 1-1, a nuclear pore membrane device 1-2, a through pin 1-3, and a nut 1-4; One end of the support member A1-1 has an outwardly protruding edge along its circumference; two through-pin fixing parts A1-1-1 are symmetrically arranged on the edge, and the through-pin fixing parts A1-1-1 have through holes that allow the nail body of the through-pin 1-3 to pass through and can block the nail head, and the two through holes are symmetrically arranged. There are two through pins 1-3, each with a thread, and the nuts 1-4 are adapted to fit the threads on the through pins 1-3; The inner ring portion of the support member A1-1 is provided with a support part A1-1-2 for placing the nuclear pore membrane device 1-2; the edge end of the support member A1-1 is provided with limiting protrusions 1-1-3 corresponding to the nuclear pore membrane device 1-2; there are four limiting protrusions 1-1-3, which are evenly arranged circumferentially along the inner ring wall of the edge end of the support member A1-1; the nuclear pore membrane device 1-2 is interference-fitted into the space enclosed by the inner ring wall of the edge end of the support member A1-1 and the support part A1-1-2. The nuclear pore membrane device 1-2 includes a mother component 1-2-1 and a daughter component 1-2-2. The daughter component 1-2-2 is detachably installed on the mother component 1-2-1. Both the mother component 1-2-1 and the daughter component 1-2-2 are provided with vent holes. A nuclear pore membrane is installed between the daughter component 1-2-1 and the mother component 1-2-2. When the nuclear pore membrane assembly body 1 is installed in the reserved opening on the box 3, the end away from the edge can extend out of the box wall.

[0024] Taking its application in a foam box as an example, the above-mentioned nuclear pore membrane assembly is used as follows: An opening matching the size of the nuclear pore membrane assembly is pre-drilled on the box 3; the nuclear pore membrane device 1-2 is installed on the support A 1-1; holding the edge of the nuclear pore membrane assembly body 1, it is inserted into the opening from the outside of the box 3, with the edge blocking the opening; at this time, the through-hole pin 1-3 is inserted through the through-hole of the through-hole pin fixing part A 1-1-1, piercing the foam box; then, the nut 1-4 is installed from inside the box 3 onto the through-hole pin 1-3, fixing it to the box wall, thus achieving a secure installation of the nuclear pore membrane assembly. After installation, the nuclear pore membrane assembly body 1 extends out of the box wall and into the inner cavity of the box 3, which can prevent condensation.

[0025] Example 2 A nuclear pore membrane assembly, such as Figures 5-9 As shown, it includes a nuclear pore membrane assembly body 1 and a waterproof component 2; The nuclear pore membrane assembly body 1 is described in accordance with Embodiment 1. The difference between Embodiment 1 and Embodiment 1 is that when the nuclear pore membrane assembly body 1 is installed in the reserved opening on the box 3, the end of it away from the edge is located in the reserved opening, does not protrude from the box wall, and leaves space. The waterproof component 2 includes an annular support component B 2-1 and a waterproof membrane 2-2; The waterproof membrane 2-2 has a perforated section. One end of the support member B 2-1 has an outwardly protruding edge along its circumference; two through-pin fixing parts B 2-1-1 are symmetrically arranged along the edge, and the through-pin fixing parts B 2-1-1 correspond to the through-pin fixing parts A 1-1-1 on the nuclear pore membrane assembly body 1 and are adapted to the through-pin 1-3 to open through holes. The inner part of the support member B 2-1 is provided with a support part B 2-1-2 for placing the waterproof membrane 2-2; the waterproof membrane 2-2 is interference-fitted into the space enclosed by the inner ring wall of the edge end of the support member B 2-1 and the support part B 2-1-2.

[0026] Taking the application in a foam box as an example, the above-mentioned nuclear pore membrane assembly is used as follows: After installing the nuclear pore membrane assembly body 1 into the reserved opening on the box 3 according to the method in Example 1, do not install the nuts 1-4 first. Hold the edge of the support member B 2-1 of the waterproof part 2 and insert the support member B 2-1 into the reserved opening from the inner cavity of the box 3 and make the through nail 1-3 pass through the through hole of the through nail fixing part B 2-1-1. Then fix the through nail 1-3 with the nuts 1-4.

[0027] Example 3 A nuclear pore membrane assembly, such as Figure 10 As shown, referring to Embodiment 2, the difference from Embodiment 2 is that the support member B 2-1 of the waterproof component 2 does not have a through-nail fixing part B 2-1-1.

[0028] Taking its application in foam boxes as an example, when using it, first install the core pore membrane assembly body 1 onto the reserved opening on the box 3, and then connect the waterproof component 2 to the reserved opening through an interference fit from the inner cavity of the box 3.

[0029] Example 4 A self-contained modified atmosphere storage and preservation device, such as Figure 11 As shown, it includes a box 3 made of foam material; the box 3 has reserved openings on all four side walls; a nuclear pore membrane assembly as described in Example 1 is installed on each reserved opening, which includes a nuclear pore membrane assembly body 1.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A nuclear pore membrane assembly, characterized in that, The nuclear pore membrane assembly body (1) includes an annular support A (1-1), a nuclear pore membrane device (1-2), a through pin (1-3), and a nut (1-4). One end of the support member A (1-1) has an outwardly protruding edge along its circumference; the edge is provided with a through-pin fixing part A (1-1-1), and the through-pin fixing part A (1-1-1) has a through hole that allows the body of the through-pin (1-3) to pass through and can block the nail head. The through pin (1-3) is threaded, and the nut (1-4) is adapted to the through pin (1-3). The inner ring of the support member A (1-1) is provided with a support part A (1-1-2) for placing the nuclear pore membrane device (1-2); the nuclear pore membrane device (1-2) is detachably installed in the space enclosed by the inner ring wall of the edge end of the support member A (1-1) and the support part A (1-1-2); The nuclear pore membrane assembly body (1) is installed in the reserved opening on the box (3); The nuclear pore membrane assembly also includes a waterproof component (2); the waterproof component (2) is provided with a hollow part, and the waterproof component (2) can be detachably installed on the reserved opening on the box body (3); The waterproof component (2) includes an annular support component B (2-1) and a waterproof membrane (2-2). The waterproof membrane (2-2) has a perforated section. One end of the support member B (2-1) has an outwardly protruding edge along its circumference; the inner ring of the support member B (2-1) is provided with a support part B (2-1-2) for placing the waterproof membrane (2-2); the waterproof membrane (2-2) is detachably installed in the space enclosed by the inner ring wall of the edge end of the support member B (2-1) and the support part B (2-1-2); The waterproof component (2) is provided with a through-hole fixing part B (2-1-1), and the through-hole fixing part B (2-1-1) is adapted to the through-hole (1-3).

2. The nuclear pore membrane assembly according to claim 1, characterized in that, The edge end of the support member A (1-1) is provided with a limiting protrusion (1-1-3) corresponding to the nuclear pore membrane device (1-2).

3. A self-generating modified atmosphere preservation and live food preservation device, characterized in that, Includes a housing (3), on which one or more reserved openings are provided, and the nuclear pore membrane assembly as described in claim 1 or 2 can be detachably installed on the reserved openings.

4. The self-generating modified atmosphere preservation and live food preservation device according to claim 3, characterized in that, The box (3) is made of foam material.

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