Modified atmosphere fresh-keeping storage box for vegetable packaging

Abstract

The invention discloses a modified atmosphere fresh-keeping storage box for vegetable packaging, and relates to the technical field of modified atmosphere fresh-keeping storage boxes. The device comprises a box body, four sets of storage chambers are attached to the interior of the box body, and gas saving assemblies are arranged on one sides of the four sets of storage chambers. A hydraulic rod drives a bearing plate to vertically move upwards along the inner wall of the box body, so that a storage chamber and a fixing block vertically move upwards along with the storage chamber, at the moment, the volume of the lower portion of the storage chamber is gradually increased, and protective gas in the storage chamber is introduced into the lower portion of the storage chamber through a separation net; the problem that a large amount of protective gas is lost when vegetables are taken is effectively avoided, the effect of storing the protective gas when the vegetables are taken can be achieved, meanwhile, the use cost of the storage box is reduced, the number of times of filling the protective gas is reduced, and the situation that the carbon dioxide concentration is too high when the vegetables are taken to cause harm to taking personnel is also avoided; and therefore, the safety coefficient of the storage box is improved.

Description

Technical Field

[0001] The invention relates to the technical field of controlled atmosphere fresh-keeping storage boxes, and in particular to a controlled atmosphere fresh-keeping storage box for vegetable packaging. Background Art

[0002] A controlled atmosphere storage box is a device used to extend the shelf life of food, fruits and vegetables and other products. It slows down the spoilage and deterioration of food by adjusting the gas composition in the storage environment. Controlled atmosphere preservation technology is a technology that focuses on controlling the concentration of gases such as oxygen and carbon dioxide in the storage environment. In this way, it affects the growth of bacteria, fungi and other microorganisms, thereby delaying the aging and spoilage of food. Among traditional preservation methods, refrigeration is the most common method. However, refrigeration can only slow down the biochemical reaction rate of food by lowering the temperature and cannot effectively control the gas exchange of food. Controlled atmosphere preservation technology adjusts the gas composition in the box, changes the oxygen, carbon dioxide and moisture content around the food, thereby affecting the metabolism of food, reducing respiration and keeping it fresh. In the controlled atmosphere storage box, the oxygen concentration usually decreases and the carbon dioxide concentration increases, further inhibiting the activity of microorganisms and enzymes, which can effectively extend the shelf life of food.

[0003] A Chinese patent (publication number: CN220721825U) discloses a controlled atmosphere fresh-keeping storage box for vegetable packaging. This device utilizes a lifting mechanism to raise six carrying plates from the box when removing vegetables from the box. This facilitates access to the vegetables, including those stored at the bottom, effectively improving the convenience of the controlled atmosphere storage box. Multiple ventilation holes in the carrying plates ensure ventilation at the bottom of the vegetables placed on the plates, effectively preventing the vegetables stored at the bottom from being cut off from the air and affecting their freshness, thereby ensuring the freshness of the box. However, during the process of removing vegetables from this controlled atmosphere storage box, a large amount of protective gas can escape from the box, resulting in insufficient protective gas remaining after the vegetables are removed. This fails to reduce protective gas consumption, reduces the number of uses of the device, and poses a safety hazard to the operator during removal. Summary of the Invention

[0004] The purpose of the present invention is to solve the above problems and provide a controlled atmosphere fresh-keeping storage box for vegetable packaging.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: A controlled atmosphere storage box for vegetable packaging, comprising a box body, four groups of storage chambers being fitted inside the box body, one side of each of the four groups of storage chambers being provided with an air-saving assembly, the air-saving assembly comprising a fixed block, an air inlet, an air inlet groove, an adjusting block, a connecting pipe, a limiting block, a spring, and a limiting plate, the fixed block being fixedly connected to the storage chamber, the air inlet being fixedly connected to the storage chamber, the limiting block being fixedly connected to the fixed block, one end of the spring being fixedly connected to the limiting block, the other end of the spring being fixedly connected to the adjusting block, the connecting pipe being fixedly connected to the adjusting block, and the limiting plate being fitted with the adjusting block; An inflation assembly is provided inside the storage chamber, and the inflation assembly includes an air inlet nozzle, a one-way air valve 1, an air supply pipe, a one-way air valve 2, a one-way air valve 3, an air storage box, a fixing plate, an air outlet and an exhaust hole.

[0006] Furthermore, the air inlet nozzle is fixedly connected to the storage chamber, the air storage box is fixedly connected to the box body, the fixed plate is fixedly connected to the storage chamber, the air outlet is fixedly connected to the fixed plate, the air outlet is fixedly connected to the one-way air valve 1, the one-way air valve 1 is fixedly connected to the fixed plate, the one-way air valve 2 is fixedly connected to the fixed plate, the air supply pipe is fixedly connected to the one-way air valve 2, the air supply pipe is slidably plugged into the fixed plate, the one-way air valve 3 is fixedly connected to the fixed plate, the exhaust hole is fixedly connected to the box body, and the exhaust hole is communicated with the one-way air valve 3.

[0007] Furthermore, a plurality of groups of hydraulic rods are fixedly installed inside the box body, and the output ends of the plurality of groups of hydraulic rods are fixedly connected to a receiving plate, and the receiving plate is fixedly connected to the storage chamber.

[0008] Furthermore, a partition net is fixedly installed inside the storage chamber, and the partition net is fixedly connected to the fixing plate.

[0009] Furthermore, an air intake pipe is fixedly installed inside the box, the air intake pipe is in contact with the surface of the fixing block, the fixing block is fixedly connected to the inside with a limiting ring, and the limiting ring is slidably plugged into the connecting pipe.

[0010] Furthermore, a partition plate 1 is fixedly installed inside the box body, a partition plate 2 is fixedly installed on the upper surface of the partition plate 1, and the partition plate 2 is in contact with the surface of the storage chamber.

[0011] Furthermore, a hinge is fixedly installed on one side of the box body, a box cover is fixedly installed on one side of the hinge, and a handle is fixedly installed on one side of the box cover.

[0012] Furthermore, an inflation button is fixedly mounted on the surface of the box cover, a one-way valve switch is fixedly mounted on the surface of the box cover, and an air pressure display screen is fixedly mounted on the surface of the box cover.

[0013] Furthermore, a handle is fixedly mounted on one side of the box, and universal wheels are fixedly mounted on the lower surface of the box.

[0014] Furthermore, a cover plate is rotatably connected to the upper surface of the storage chamber, and a second handle is fixedly mounted on the upper surface of the cover plate.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention drives the receiving plate to move vertically upward along the inner wall of the box body through a hydraulic rod, so that the storage chamber and the fixed block move vertically upward with the storage chamber. At this time, the volume below the storage chamber gradually increases, and the protective gas inside the storage chamber passes into the bottom of the storage chamber through the partition net, so that the air pressure inside the storage chamber gradually decreases. When the air inlet groove moves to the air inlet pipe, the outside air passes into the fixed block through the air inlet pipe. At this time, the air pressure below the adjusting block is much greater than that above the adjusting block, so that the adjusting block and the connecting pipe move vertically upward, causing the spring to stretch. When the adjusting block moves to the air inlet, the outside air passes into the storage chamber through the air inlet, so that the air pressure in the storage chamber gradually becomes the same as the external atmospheric pressure. Since the protective gas is in a low-temperature state at this time, and the protective gas used is carbon dioxide, and the external air is at room temperature, the protective gas The gas density is greater than that of air, so that the protective gas is in the area below the storage chamber, and the temperature difference causes the external air and the protective gas to be stratified, so that the interior of the storage chamber is basically air. After the cover is opened by handle 2, the vegetables inside the storage chamber can be taken out. After the vegetables are taken out, the storage chamber moves back to its original position, and the air in the storage chamber is discharged to the outside along with a small amount of protective gas, and the remaining protective gas returns to the storage chamber. The setting of the air-saving component effectively avoids the problem of large-scale loss of protective gas when taking vegetables, and can achieve the effect of storing protective gas when taking. At the same time, it reduces the use cost of the storage box, reduces the number of times the protective gas is charged, and avoids the harm to the person taking the vegetables due to excessive carbon dioxide concentration during taking, thereby improving the safety factor of the storage box.

[0016] 2. The present invention introduces protective gas stored in the gas storage box into the interior of the storage chamber via an air inlet nozzle. A plurality of air valves, including one-way valves 1, 2, and 3, are opened by one-way valve switches. Since the density of air is lower than that of the protective gas, the air is located above the storage chamber and gradually enters the next group of storage chambers through one-way valves 1 and 2. The air in the last group of storage chambers is discharged out of the box through an exhaust hole, resulting in a higher protective gas content in the previous group of storage chambers than in the next group. After all four groups of storage chambers are filled to the target concentration, the one-way valve switches are closed by closing each group of air valves. The provision of this inflation assembly effectively avoids the problem of different oxygen requirements for different types of vegetables, thereby achieving the desired effect of preserving different types of vegetables. It also improves the functionality and application range of the storage box. Since fruits and vegetables have different freezing points, when the temperature inside the storage box is below its freezing point, the DC electric field provided within the storage box generates resonant small molecules, which prevents moisture in the fruits and vegetables from freezing, thereby achieving the effect of preserving the fruits and vegetables while preventing frost from forming on their surfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This invention Figure 1 Rear view schematic diagram of the overall structure; Figure 3 This invention Figure 1 Schematic diagram of the internal structure viewed from above; Figure 4 This invention Figure 3 Side view of the partial structure; Figure 5 This invention Figure 4 Left view structural diagram; Figure 6 This invention Figure 5 Schematic diagram of the right-side cross-section structure; Figure 7 This invention Figure 6 A in the middle is an enlarged structural diagram; Figure 8 This invention Figure 5 Schematic diagram of the internal gas pipeline structure viewed from above.

[0018] Reference numerals: 1, box body; 11, universal wheel; 12, inflation button; 13, one-way valve switch; 14, air pressure display screen; 15, box cover; 16, grip; 17, handle 1; 18, hinge; 19, handle 2; 110, cover plate; 111, partition 1; 2, inflation assembly; 21, exhaust hole; 22, air outlet; 23, air storage box; 24, air inlet nozzle; 25, partition 2; 26, one-way valve 1; 27. Air pipe; 28. One-way air valve 2; 29. ​​One-way air valve 3; 3. Throttle assembly; 31. Air intake pipe; 32. Hydraulic rod; 33. Adapter plate; 34. Partition; 35. Storage chamber; 36. Fixing plate; 37. Fixing block; 38. Air inlet; 39. Air intake groove; 310. Adjusting block; 311. Connecting pipe; 312. Limit block; 313. Spring; 314. Limiting ring; 315. Limiting plate. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0020] Example 1, as Figures 1-8 As shown, a controlled atmosphere storage box for vegetable packaging includes a box body 1, four groups of storage chambers 35 are attached to the interior of the box body 1, and a gas-saving component 3 is provided on one side of each of the four groups of storage chambers 35. The gas-saving component 3 includes a fixed block 37, an air inlet 38, an air inlet groove 39, an adjusting block 310, a connecting pipe 311, a limiting block 312, a spring 313 and a limiting plate 315. The fixed block 37 is fixedly connected to the storage chamber 35, the air inlet 38 is fixedly connected to the storage chamber 35, the limiting block 312 is fixedly connected to the fixed block 37, one end of the spring 313 is fixedly connected to the limiting block 312, the other end of the spring 313 is fixedly connected to the adjusting block 310, the connecting pipe 311 is fixedly connected to the adjusting block 310, and the limiting plate 315 is attached to the adjusting block 310; An inflation assembly 2 is provided inside the storage chamber 35, and the inflation assembly 2 includes an air inlet nozzle 24, a one-way air valve 1 26, an air supply pipe 27, a one-way air valve 28, a one-way air valve 3 29, an air storage box 23, a fixing plate 36, an air outlet 22 and an exhaust hole 21.

[0021] The principle of the controlled atmosphere fresh-keeping storage box is to slow down the respiration of food and reduce spoilage and loss by adjusting and controlling the gas composition in the packaging box. When taking out the vegetables from the controlled atmosphere fresh-keeping storage box, the receiving plate 33 is driven by the hydraulic rod 32 to move vertically upward along the inner wall of the box body 1, so that the storage chamber 35 and the fixed block 37 move vertically upward along with the storage chamber 35. At this time, the volume below the storage chamber 35 gradually increases, and the protective gas inside the storage chamber 35 is passed into the bottom of the storage chamber 35 through the partition 34, so that the internal air pressure of the storage chamber 35 gradually decreases. When the air inlet groove 39 moves When it reaches the air inlet pipe 31, the outside air enters the fixed block 37 through the air inlet pipe 31. At this time, the air pressure below the regulating block 310 is much greater than that above the regulating block 310, causing the regulating block 310 and the connecting pipe 311 to move vertically upward, causing the spring 313 to stretch. When the regulating block 310 moves to the air inlet 38, the outside air enters the storage chamber 35 through the air inlet 38, causing the air pressure in the storage chamber 35 to gradually become the same as the external atmospheric pressure. Since the protective gas is in a low-temperature state at this time, and the protective gas used is carbon dioxide, and the external air is at room temperature, the density of the protective gas is large. The protective gas is in the area below the storage chamber 35, so that the external air and the protective gas are stratified by the temperature difference, so that the interior of the storage chamber 35 is basically air. After the cover 110 is opened by the handle 19, the vegetables in the storage chamber 35 can be taken out. After the vegetables are taken out, the cover 110 is closed, and the receiving plate 33 and the storage chamber 35 are driven to return to their original positions by the hydraulic rod 32. At this time, the volume of the area below the storage chamber 35 gradually decreases, so that the air pressure in the storage chamber 35 gradually increases. At this time, the air pressure in the storage chamber 35 is greater than the atmospheric pressure, so that the regulating block 3 10 and the connecting pipe 311 move vertically upward. When the adjusting block 310 is separated from the surface of the limiting plate 315, the internal gas of the storage chamber 35 is discharged to the outside of the box through the fixing block 37 and the air inlet pipe 31. Since the air inlet 38 is arranged above the side of the storage chamber 35, the air above the storage chamber 35 is gradually discharged to the outside of the box, and the protective gas is at the bottom of the storage chamber 35. When the air pressure in the storage chamber 35 is the same as the atmospheric pressure, the adjusting block 310 is re-fitted with the surface of the limiting plate 315, so that the internal gas of the storage chamber 35 no longer circulates with the external air, thereby exhausting the air introduced into the storage chamber 35.

[0022] Example 2, as Figure 4 、 Figure 8As shown, on the basis of the above embodiment, it also includes: the air inlet nozzle 24 is fixedly connected to the storage chamber 35, the air storage box 23 is fixedly connected to the box body 1, the fixing plate 36 is fixedly connected to the storage chamber 35, the air outlet 22 is fixedly connected to the fixing plate 36, the air outlet 22 is fixedly connected to the one-way air valve 1 26, the one-way air valve 1 26 is fixedly connected to the fixing plate 36, the one-way air valve 28 is fixedly connected to the fixing plate 36, the air supply pipe 27 is fixedly connected to the one-way air valve 28, the air supply pipe 27 is slidably plugged into the fixing plate 36, the one-way air valve 3 29 is fixedly connected to the fixing plate 36, the exhaust hole 21 is fixedly connected to the box body 1, the exhaust hole 21 is communicated with the one-way air valve 3 29, the protective gas stored in the air storage box 23 is passed into the interior of the storage chamber 35 through the air inlet nozzle 24, the one-way air valve 1 26 and the one-way air valve 28 are opened by the one-way valve switch 13. Multiple groups of air valves, such as valve 28 and one-way air valve 3 29, have a lower air density than the protective gas and are located above the storage chamber 35. The air gradually flows into the next group of storage chambers 35 through one-way air valve 1 26 and one-way air valve 2 28. The air in the last group of storage chambers 35 is discharged outside the box through the exhaust hole 21, so that the protective gas content in the previous group of storage chambers 35 is higher than that in the next group. After the four groups of storage chambers 35 are all filled to the target content, the one-way valve switch 13 is used to close each group of air valves, thereby achieving a stepped distribution of the protective gas concentration. Since fruits and vegetables have different freezing points, when the temperature inside the storage box is lower than its own freezing point, the DC electric field set inside the storage box generates resonant small molecules, which prevents the moisture in the fruits and vegetables from freezing, thereby achieving the effect of preserving the fruits and vegetables while preventing frost from forming on their surfaces.

[0023] Example 3, as Figure 3 As shown, on the basis of the above embodiment, it also includes that a plurality of groups of hydraulic rods 32 are fixedly installed inside the box body 1, and the output ends of the plurality of groups of hydraulic rods 32 are fixedly connected to the receiving plates 33, and the receiving plates 33 are fixedly connected to the storage chambers 35. The hydraulic rods 32 drive the receiving plates 33 to move in the vertical direction, so that the vertical height of each group of storage chambers 35 can be controlled.

[0024] Example 4, as Figure 3 As shown, on the basis of the above embodiment, it also includes that a partition net 34 is fixedly installed inside the storage chamber 35, and the partition net 34 is fixedly connected to the fixed plate 36. By setting the partition net 34, it is possible to prevent dust and other impurities inside the storage chamber 35 from following the protective gas into the bottom of the storage chamber 35, thereby avoiding the problem of gradual accumulation below the storage chamber 35 so that the storage chamber 35 cannot completely fall into the interior of the box body 1.

[0025] Example 5, as Figure 3 、 Figure 7As shown, on the basis of the above embodiment, it also includes that an air intake pipe 31 is fixedly installed inside the box body 1, the air intake pipe 31 is fitted with the surface of the fixed block 37, the internal fixed connection of the fixed block 37 is provided with a limiting ring 314, the limiting ring 314 is slidably plugged into the connecting pipe 311, and the connecting pipe 311 is limited by the limiting ring 314, so that the connecting pipe 311 and the adjustment block 310 are more stable when moving vertically, thereby preventing the adjustment block 310 from being unable to move between the two sets of limiting plates 315.

[0026] Example 6: Figure 8 As shown, on the basis of the above embodiment, it also includes that a partition 111 is fixedly installed inside the box body 1, and a partition 25 is fixedly installed on the upper surface of the partition 111. The partition 25 is in contact with the surface of the storage chamber 35. The partition 111 and the partition 2 25 are used to partition each group of storage chambers 35 so that the storage chambers 35 of each group do not affect each other when they are opened and closed.

[0027] Example 7, as Figure 1 、 Figure 2 As shown, on the basis of the above embodiment, it also includes: a hinge 18 is fixedly installed on one side of the box body 1, a box cover 15 is fixedly installed on one side of the hinge 18, a handle 17 is fixedly installed on one side of the box cover 15, an inflation button 12 is fixedly installed on the surface of the box cover 15, a one-way valve switch 13 is fixedly installed on the surface of the box cover 15, an air pressure display screen 14 is fixedly installed on the surface of the box cover 15, a handle 16 is fixedly installed on one side of the box body 1, and a universal wheel 11 is fixedly installed on the lower surface of the box body 1. The inflation button 12, the one-way valve switch 13 and the air pressure display screen 14 are arranged to facilitate the operation of the storage box, and the handle 16 and the universal wheel 11 can facilitate the user to transport the storage box.

[0028] Example eight, as Figure 3 As shown, on the basis of the above embodiment, it also includes that the upper surface of the storage chamber 35 is rotatably connected to the cover plate 110, and the upper surface of the cover plate 110 is fixedly installed with a handle 19. The cover plate 110 can ensure that each group of storage chambers 35 is sealed to prevent the protective gas from escaping when the box cover 15 is opened.

[0029] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A controlled atmosphere fresh-keeping storage box for vegetable packaging, comprising a box body (1), characterized in that: Four groups of storage chambers (35) are bonded to the interior of the box (1), and a throttle assembly (3) is provided on one side of each of the four groups of storage chambers (35). The throttle assembly (3) includes a fixed block (37), an air inlet (38), an air inlet groove (39), an adjustment block (310), a connecting pipe (311), a limit block (312), a spring (313), and a limit plate (315). The fixed block (37) is fixedly connected to the storage chamber (35), the air inlet (38) is fixedly connected to the storage chamber (35), the limit block (312) is fixedly connected to the fixed block (37), one end of the spring (313) is fixedly connected to the limit block (312), the other end of the spring (313) is fixedly connected to the adjustment block (310), the connecting pipe (311) is fixedly connected to the adjustment block (310), and the limit plate (315) is bonded to the adjustment block (310); An inflatable assembly (2) is provided inside the storage chamber (35), and the inflatable assembly (2) includes an air inlet nozzle (24), a one-way air valve (26), an air delivery pipe (27), a one-way air valve (28), a one-way air valve (29), an air storage box (23), a fixing plate (36), an air outlet (22), and an exhaust hole (21).

2. A modified atmosphere fresh-keeping storage box for vegetable packaging according to claim 1, characterized in that: The air inlet nozzle (24) is fixedly connected to the storage chamber (35), the air storage box (23) is fixedly connected to the box body (1), the fixed plate (36) is fixedly connected to the storage chamber (35), the air outlet hole (22) is fixedly connected to the fixed plate (36), the air outlet hole (22) is fixedly connected to the one-way air valve (26), the one-way air valve (26) is fixedly connected to the fixed plate (36), the one-way air valve (28) is fixedly connected to the fixed plate (36), the air supply pipe (27) is fixedly connected to the one-way air valve (28), the air supply pipe (27) is slidably plugged into the fixed plate (36), the one-way air valve (39) is fixedly connected to the fixed plate (36), the exhaust hole (21) is fixedly connected to the box body (1), and the exhaust hole (21) is communicated with the one-way air valve (29).

3. The modified atmosphere fresh-keeping storage box for vegetable packaging according to claim 1, characterized in that: Multiple groups of hydraulic rods (32) are fixedly installed inside the box (1), and the output ends of the multiple groups of hydraulic rods (32) are fixedly connected to a receiving plate (33), and the receiving plate (33) is fixedly connected to the storage chamber (35).

4. The modified atmosphere fresh-keeping storage box for vegetable packaging according to claim 1, characterized in that: A partition net (34) is fixedly installed inside the storage chamber (35), and the partition net (34) is fixedly connected to the fixing plate (36).

5. The modified atmosphere fresh-keeping storage box for vegetable packaging according to claim 1, characterized in that: An air intake pipe (31) is fixedly installed inside the box (1), the air intake pipe (31) is in contact with the surface of the fixing block (37), a limiting ring (314) is fixedly connected inside the fixing block (37), and the limiting ring (314) is slidably plugged into the connecting pipe (311).

6. The modified atmosphere fresh-keeping storage box for vegetable packaging according to claim 1, characterized in that: A partition plate 1 (111) is fixedly installed inside the box body (1), and a partition plate 2 (25) is fixedly installed on the upper surface of the partition plate 1 (111), and the partition plate 2 (25) is in contact with the surface of the storage chamber (35).

7. The modified atmosphere fresh-keeping storage box for vegetable packaging according to claim 1, characterized in that: A hinge (18) is fixedly mounted on one side of the box body (1), a box cover (15) is fixedly mounted on one side of the hinge (18), and a handle (17) is fixedly mounted on one side of the box cover (15).

8. The modified atmosphere fresh-keeping storage box for vegetable packaging according to claim 7, characterized in that: An inflation button (12) is fixedly mounted on the surface of the box cover (15), a one-way valve switch (13) is fixedly mounted on the surface of the box cover (15), and an air pressure display screen (14) is fixedly mounted on the surface of the box cover (15).

9. The modified atmosphere fresh-keeping storage box for vegetable packaging according to claim 1, characterized in that: A handle (16) is fixedly mounted on one side of the box body (1), and a universal wheel (11) is fixedly mounted on the lower surface of the box body (1).

10. The modified atmosphere fresh-keeping storage box for vegetable packaging according to claim 1, characterized in that: The upper surface of the storage chamber (35) is rotatably connected to a cover plate (110), and a second handle (19) is fixedly mounted on the upper surface of the cover plate (110).

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