Corn heat-insulation fresh-keeping box

By designing a corn insulation and fresh-keeping box, the drive components in the box allow air to enter the ice pack cavity, the air conditioner diffuses, and maintains a low-temperature environment, the problem of rapid sugar conversion caused by the action of oxidoreductase in corn during long-distance transportation is solved, and the corn is prevented from spoiling.

CN119160526AInactive Publication Date: 2024-12-20TENGZHOU JINTAI FOOD CO LTD
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Patent Information

Application Number
CN202411440227.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-15
Publication Date
2024-12-20
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Corn produced in the south has poor sugar content and nutritional quality, while the quality of production in the north is better. However, due to the short production season and concentrated market time, long-distance transportation is limited by fresh preservation technology, the corn has rapid sugar content due to the action of oxidoreductase during transportation. Convert, lose the original flavor.

Method used

A corn insulation fresh-keeping box is designed, including a box, a fresh-keeping chamber, a sealed cover, an outer shell, an inner shell, a middle cylinder, an ice pack cavity, a breathable hole and a driving component, and the axial direction of the piston in the breathing chamber Reciprocating movement allows air to enter the ice pack chamber through the breathable holes, and the air conditioning is diffused, maintaining a low-temperature environment and preventing corn from deteriorating.

Benefits of technology

During transportation, the piston is driven into the ice pack chamber by vibration and shaking, and the air is diffused, maintaining a low-temperature environment in the freshener box to prevent corn from deteriorating. It is suitable for heat insulation and freshness for long-distance transportation.

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Abstract

The invention discloses a corn heat-insulation fresh-keeping box, and relates to the technical field of low-temperature storage, the corn heat-insulation fresh-keeping box comprises a box body, a fresh-keeping cavity with a top opening is formed in the box body, a sealing cover body is detachably mounted at the opening of the fresh-keeping cavity, and the box body comprises an outer shell and an inner shell; and an equal-distance gap is formed between the outer shell and the inner shell, a hollow heat insulation cavity is formed between the outer shell and the inner shell, a middle cylinder is vertically and fixedly assembled in the center of the interior of the fresh-keeping cavity, and a grid plate is fixedly arranged in the middle cylinder. In the transportation process, the piston axially reciprocates in the lower breathing cavity under the vibration and shaking of the corn heat-insulating fresh-keeping box, so that air in the fresh-keeping cavity enters the upper ice bag cavity through the air holes to be in contact with an ice bag, then the air is discharged into the fresh-keeping box through the air holes, cold air in the upper ice bag cavity is diffused towards the periphery, and the cold air in the lower ice bag cavity is discharged into the fresh-keeping box through the air holes. And therefore, the fresh-keeping box is in a low-temperature environment, and the fresh corn cobs are prevented from going bad in the transportation process.
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Description

Technical Field

[0001] The invention relates to the technical field of low-temperature storage, in particular to a heat-insulating fresh-keeping box for corn. Background Art

[0002] However, due to regional climate restrictions, the sugar content and nutritional quality of corn produced in the south are poor, while the quality of corn produced in the north is better, but due to the short production season and concentrated time to market, the contradiction between supply and demand is prominent. Long-distance transportation is limited by preservation technology, and the sugar in fruit corn kernels will quickly convert into carbon dioxide and water under the action of oxidoreductase, losing its original flavor. Summary of the invention

[0003] The object of the present invention is to provide a corn insulation and fresh-keeping box to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme: The present invention provides a corn insulation and fresh-keeping box, which is characterized in that it includes a box body, a fresh-keeping cavity with an open top formed inside the box body, and a sealing cover body is detachably installed at the open part of the fresh-keeping cavity, the box body includes an outer shell and an inner shell, and an equidistant gap is provided between the outer shell and the inner shell to form a hollow insulation cavity, a middle cylinder is vertically fixedly installed at the center position inside the fresh-keeping cavity, a grid plate is fixedly arranged inside the middle cylinder, the grid plate divides the middle cylinder into an upper ice bag cavity and a lower breathing cavity, air holes are evenly arranged on the middle cylinder outside the upper ice bag cavity, a piston is slidably arranged in the lower breathing cavity, and the piston is connected to a driving component for driving its axial reciprocating motion.

[0005] Furthermore, the driving assembly includes a bottom shell fixedly assembled on the bottom of the box body, and an active cavity is formed inside the bottom shell. The driving assembly also includes a movable plate vertically slidably arranged in the active cavity, the center of the movable plate has a circular through hole, a counterweight plate is arranged in the circular through hole, elastic ropes are evenly arranged along the circumferential direction between the outer circumferential surface of the counterweight plate and the inner wall of the central through hole, a first return spring is evenly arranged between the bottom surface of the movable plate and the bottom of the active cavity, the bottom of the piston is coaxially connected with a connecting shaft, the bottom end of the connecting shaft passes through the bottom wall of the box body, extends into the active cavity and is fixedly connected to the movable plate through a connecting rod.

[0006] Furthermore, inelastic ropes are evenly arranged between the outer circumferential surface of the counterweight plate and the inner wall of the central through hole along the circumferential direction, and the inelastic ropes are initially in a relaxed state.

[0007] Furthermore, a through hole adapted to the middle cylinder is provided at the center of the sealing cover body, the top end of the middle cylinder passes through the through hole and is threadedly connected with a sealing cover, a contact surface that contacts the bottom surface of the sealing cover body is provided on the outer side of the middle cylinder, a first sealing gasket is provided between the contact surface and the sealing cover body, and a second sealing gasket is provided between the sealing cover body and the top of the side wall of the box body.

[0008] Furthermore, a plurality of air permeable cavities with a cylindrical cross-section are formed between the outer shell and the inner shell of the side wall of the box body, wherein a protruding first arc portion is formed on the outer shell at the position of the air permeable cavity, and a protruding second arc portion is formed on the inner shell at the position of the air permeable cavity, first air ports are evenly arranged on both sides of the first arc portion, and second air ports are evenly arranged on both sides of the second arc portion, and a blocking member is assembled inside the air permeable cavity, wherein the blocking member includes arc-shaped plates symmetrically arranged on both sides of the air permeable cavity and tightly attached to the inner wall of the air permeable cavity, and a driving shaft for driving a pair of arc-shaped plates to rotate around the central axis of the air permeable cavity, and the arc-shaped plates can block the first air port and the second air port under the drive of the driving shaft.

[0009] Furthermore, elastic telescopic parts are fixedly installed at the two corresponding arc-shaped plates on the outer side of the driving shaft, the fixed end of the elastic telescopic part is fixedly connected to the driving shaft, and the telescopic end of the elastic telescopic part is fixedly connected to the corresponding arc-shaped plate.

[0010] Furthermore, the elastic telescopic part includes a fixed plate fixedly connected to the driving shaft, a telescopic cavity is arranged in the fixed plate, a telescopic plate is slidably arranged in the telescopic cavity, the side of the telescopic plate away from the driving shaft is fixedly connected to the arc-shaped plate, a second return spring is arranged between the side of the telescopic plate close to the driving shaft and the side of the telescopic cavity, a counterweight frame is slidably arranged on the outer side of the fixed plate, connecting holes are symmetrically arranged on the fixed plate on the side of the telescopic cavity close to the driving shaft, a connecting rope is arranged in the connecting hole, and two ends of the connecting rope are respectively fixedly connected to the telescopic plate and the counterweight frame; the corn insulation and fresh-keeping box also includes a driving device for driving the driving shaft to rotate.

[0011] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects: During the transportation process, the present invention can vibrate and shake the corn insulation fresh-keeping box, causing the piston to move axially back and forth in the lower breathing chamber, thereby allowing the air in the fresh-keeping chamber to enter the upper ice bag chamber through the air vents and contact the ice bag, and then be discharged into the fresh-keeping box through the air vents, so that the cold air in the upper ice bag chamber diffuses toward the periphery, so that the fresh-keeping box is in a low-temperature environment, thereby preventing the fresh corn cobs from deteriorating during transportation.

[0012] The blocking component of the present invention can release the blocking of the first air port and the second air port when the corn is transported by a transport vehicle with a refrigerated vehicle box, so that the cold air in the refrigerated vehicle box can enter the fresh-keeping cavity, thereby keeping the corn in a low-temperature environment; when the corn is transported by a conventional transport vehicle, the first air port and the second air port are blocked to weaken the heat exchange between the cold air in the fresh-keeping cavity and the outside world, thereby maintaining a low-temperature environment in the fresh-keeping cavity (that is, the cold temperature of the fresh-keeping cavity is maintained by the ice bag).

[0013] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the top view of the structure of the present invention; Figure 3 yes Figure 2 AA structural diagram; Figure 4 It is a front view structural schematic diagram of the present invention; Figure 5 yes Figure 4 BB structural diagram; Figure 6 yes Figure 5 Schematic diagram of the local structure at A; Figure 7 It is a schematic diagram of the structure of the driving component of the present invention.

[0016] In the figure: 1-box body; 11-fresh-keeping cavity; 12-outer shell; 121-first arc portion; 122-first air port; 13-inner shell; 131-second arc portion; 132-second air port; 14-hollow heat-insulating cavity; 15-sealed cover; 151-through hole; 16-blocking cover; 17-ventilation cavity; 2-middle cylinder; 21-upper ice bag cavity; 22-lower breathing cavity; 23-ventilation hole; 24-piston; 3-grid plate; 4-drive assembly; 41 - bottom shell; 42 - movable cavity; 43 - movable plate; 431 - circular through hole; 44 - counterweight plate; 45 - elastic rope; 46 - first return spring; 47 - connecting shaft; 48 - inelastic rope; 5 - blocking member; 51 - arc plate; 52 - driving shaft; 53 - elastic telescopic member; 531 - fixed plate; 532 - telescopic cavity; 533 - telescopic plate; 534 - second return spring; 535 - communicating hole; 54 - counterweight frame; 55 - connecting rope. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0018] See also Figure 1-Figure 7 The present invention provides a corn insulation fresh-keeping box, comprising a box body 1, wherein a fresh-keeping cavity 11 with an open top is formed inside the box body 1, and a sealing cover 15 is detachably installed at the open portion of the fresh-keeping cavity 11, Figure 3 and 5 As shown, the box body 1 includes an outer shell 12 and an inner shell 13, and there is an equidistant gap between the outer shell 12 and the inner shell 13 to form a hollow insulation cavity 14. A middle cylinder 2 is vertically fixedly installed at the center position inside the fresh-keeping cavity 11, and a grid plate 3 is fixedly arranged in the middle cylinder 2. The grid plate 3 divides the middle cylinder 2 into an upper ice bag cavity 21 and a lower breathing cavity 22. Air holes 23 are evenly arranged on the middle cylinder 2 outside the upper ice bag cavity 21, and a piston 24 is slidably arranged in the lower breathing cavity 22. The piston 24 is connected to a driving component 4 for driving its axial reciprocating motion.

[0019] When in use, after stacking the harvested fresh corn cobs in the fresh-keeping chamber 11, place the ice bag in the upper ice bag chamber 21 of the middle tube 2 and cover it with the sealing cover 15, and then the fresh-keeping box can be placed on a transport vehicle for transportation. During transportation, the hollow insulation chamber 14 formed between the outer shell 12 and the inner shell 13 can play a role of insulation and heat preservation, thereby reducing the heat exchange between the cold air in the fresh-keeping chamber 11 and the outside air. During transportation, the driving component 4 can drive the piston 24 to move axially back and forth in the lower breathing chamber 22, so that the air in the fresh-keeping chamber 11 enters the upper ice bag chamber 21 through the air vent 23 and contacts the ice bag, and then is discharged into the fresh-keeping box through the air vent 23, so that the cold air in the upper ice bag chamber 21 diffuses toward the periphery, so that the fresh-keeping box is in a low-temperature environment, thereby preventing the fresh corn cobs from deteriorating during transportation.

[0020] Combination Figure 3 and Figure 7 As shown, in a specific embodiment of the present invention, the driving assembly 4 includes a bottom shell 41 fixedly assembled on the bottom of the box body 1, and an active cavity 42 is formed inside the bottom shell 41, and the driving assembly 4 also includes a movable plate 43 vertically slidably arranged in the active cavity 42, and the center of the movable plate 43 has a circular through hole 431, and a counterweight plate 44 is arranged in the circular through hole 431, and elastic ropes 45 are evenly arranged along the circumferential direction between the outer peripheral surface of the counterweight plate 44 and the inner wall of the center through hole 431, and a first return spring 46 is evenly arranged between the bottom surface of the movable plate 43 and the bottom of the active cavity 42, and a connecting shaft 47 is coaxially connected to the bottom of the piston 24, and the bottom end of the connecting shaft 47 passes through the bottom wall of the box body 1, extends into the active cavity 42, and is fixedly connected to the movable plate 43 through a connecting rod.

[0021] Based on the above design, the driving assembly 4 can make the piston 24 axially reciprocate in the lower breathing chamber 22 through the vibration and shaking of the corn insulation fresh-keeping box during transportation.

[0022] Specifically, when encountering bumpy roads during transportation, the corn insulation box vibrates, and the counterweight plate 44 vibrates at this time. The counterweight plate 44 stretches the elastic rope 45 to cause the movable plate 43 to move axially, thereby driving the piston 24 to move axially in the lower breathing chamber 22 through the connecting shaft 47. When the transport vehicle accelerates or turns during transportation, the counterweight plate 44 deviates, and the deviation of the counterweight plate 44 also causes the movable plate 43 to move up and down in the movable chamber 42. While the movable plate 43 moves, the movable plate 43 is connected to the piston 24 through the connecting shaft 47, so that the piston 24 can move up and down synchronously in the lower breathing chamber 22.

[0023] In a specific embodiment of the present invention, non-elastic ropes 48 are evenly arranged along the circumferential direction between the outer circumferential surface of the counterweight plate 44 and the inner wall of the central through hole 535, and the non-elastic ropes 48 are initially in a relaxed state.

[0024] Based on the above design, after the counterweight plate 44 moves downward or deviates a certain distance, the non-elastic rope 48 can be used to limit the counterweight plate 44 from continuing to stretch the elastic rope 45, thereby causing the elastic rope 45 to break.

[0025] In a specific embodiment of the present invention, the center of the sealing cover 15 is provided with a through hole 151 adapted to the middle tube 2, the top of the middle tube 2 passes through the through hole 151 and is threadedly connected with a blocking cover 16, the outer side of the middle tube 2 is provided with a contact surface that contacts the bottom surface of the sealing cover 15, a first sealing gasket (not shown) is provided between the contact surface and the sealing cover 15, and a second sealing gasket (not shown) is provided between the sealing cover 15 and the top of the side wall of the box body 1. Based on the above design, the present invention can squeeze the sealing cover 15 through the blocking cover 16, so that the sealing cover 15 completes the blocking of the open part of the fresh-keeping cavity 11.

[0026] Combination Figure 5 and Figure 6 As shown, in a specific embodiment of the present invention, a plurality of air permeable cavities 17 with a cylindrical cross-section are formed between the outer shell 12 and the inner shell 13 of the side wall of the box body 1, wherein a protruding first arc portion 121 is formed on the outer shell 12 at the position of the air permeable cavity 17, and a protruding second arc portion 131 is formed on the inner shell 13 at the position of the air permeable cavity 17, first air ports 122 are evenly arranged on both sides of the first arc portion 121, and second air ports 132 are evenly arranged on both sides of the second arc portion 131, and a blocking member 5 is assembled inside the air permeable cavity 17, and the blocking member 5 includes arc-shaped plates 51 symmetrically arranged on both sides of the air permeable cavity 17 and tightly attached to the inner wall of the air permeable cavity 17, and a driving shaft 52 for driving a pair of arc-shaped plates 51 to rotate around the central axis of the air permeable cavity 17, and the arc-shaped plates 51 can block the first air port 122 and the second air port 132 under the drive of the driving shaft 52.

[0027] The transportation process of corn is divided into long-distance transportation and short-distance transportation. For long-distance transportation, considering the long transportation time, in order to prevent the corn from deteriorating during transportation and affecting the quality of the corn, a transport vehicle with a refrigerated truck is generally used to transport the corn. When using such a transport vehicle to transport the corn, the staff can move the arc plate 51 in the air permeable cavity 17 through the driving shaft 52, so that the arc plate 51 releases the blockage of the first air port 122 and the second air port 132. In this way, during the transportation process, the cold air in the refrigerated truck can enter the fresh-keeping cavity 11, so that the corn is in a low-temperature environment; As for short-distance transportation, since the transportation time is short, conventional transport vehicles (such transport vehicles do not have refrigeration systems) are generally used to transport corn. At this time, the staff can use the driving shaft 52 to move the arc plate 51 in the air permeable cavity 17, so that the arc plate 51 blocks the first air port 122 and the second air port 132. In this way, during the transportation process, the cold air in the preservation cavity 11 can be weakened to exchange heat with the outside world, so that the low temperature environment in the preservation cavity 11 is maintained (that is, the low temperature in the preservation cavity 11 is maintained by ice bags).

[0028] In a specific embodiment of the present invention, elastic telescopic parts 53 are fixedly installed at the two corresponding arc-shaped plates 51 on the outer side of the driving shaft 52, and the fixed end of the elastic telescopic part 53 is fixedly connected to the driving shaft 52, and the telescopic end of the elastic telescopic part 53 is fixedly connected to the corresponding arc-shaped plate 51.

[0029] Based on the above design, the present invention can make the arc-shaped plate 51 closely attached to the inner wall of the air-permeable cavity 17 through the elastic force of the elastic telescopic member 53 , thereby increasing the blocking effect on the first air port 122 and the second air port 132 .

[0030] In a specific embodiment of the present invention, the elastic telescopic member 53 includes a fixed plate 531 fixedly connected to the drive shaft 52, a telescopic chamber 532 is provided in the fixed plate 531, a telescopic plate 533 is slidably provided in the telescopic chamber 532, the telescopic plate 533 is fixedly connected to the arc plate 51 on the side away from the drive shaft 52, a second return spring 534 is provided between the telescopic plate 533 on the side close to the drive shaft 52 and the telescopic chamber 532, a counterweight frame 54 is slidably provided on the outer side of the fixed plate 531, a connecting hole 535 is symmetrically provided on the fixed plate 531 on the side close to the drive shaft 52 of the telescopic chamber 532, a connecting rope 55 is provided in the connecting hole 535, and the two ends of the connecting rope 55 are respectively fixedly connected to the telescopic plate 533 and the counterweight block, and the corn heat insulation fresh-keeping box includes a driving device (not shown) for driving the drive shaft 52 to rotate, and the driving device can be a motor. The output end of the motor is connected to the top of the drive shaft 52 to drive the rotation of the drive shaft 52.

[0031] Based on the above design, when the transport vehicle with a refrigerated box is used to transport corn, the driving device can be used to drive the driving shaft 52 to rotate continuously. During the rotation of the driving shaft 52, the driving shaft 52 drives the arc plate 51 to rotate continuously through the telescopic plate 533 and the fixed plate 531. In this process, the telescopic plate 533 and the fixed plate 531 can be similar to blades, so that the external cold air quickly enters the fresh-keeping chamber 11, thereby making the fresh-keeping chamber 11 in a low-temperature environment. In this process, the counterweight frame 54 can move away from the driving shaft 52 under the action of centrifugal force, and drive the telescopic plate 533 and the fixed plate 531 to rotate continuously. The plate 533 moves toward the drive shaft 52 in the telescopic cavity 532, thereby keeping the arc plate 51 away from the inner wall of the air permeable cavity 17, avoiding long-term friction that causes wear of the arc plate 51 and affects the blocking of the first air port 122 and the second air port 132; when a conventional transport vehicle is used to transport corn, the arc plate 51 is driven by the driving device to block the first air port 122 and the second air port 132. At this time, under the action of the second return spring 534, the arc plate 51 drives the arc plate 51 to be close to the inner wall of the air permeable cavity 17, thereby improving the blocking effect of the first air port 122 and the second air port 132.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A corn insulation fresh-keeping box, characterized in that: The invention comprises a box body, wherein a fresh-keeping cavity with an open top is formed inside the box body, and a sealing cover body is detachably installed at the open part of the fresh-keeping cavity, wherein the box body comprises an outer shell and an inner shell, and an equidistant gap is provided between the outer shell and the inner shell to form a hollow heat-insulating cavity, a middle cylinder is vertically fixedly installed at the center position inside the fresh-keeping cavity, a grid plate is fixedly provided inside the middle cylinder, and the grid plate divides the middle cylinder into an upper ice bag cavity and a lower breathing cavity, air holes are evenly provided on the middle cylinder outside the upper ice bag cavity, a piston is slidably provided in the lower breathing cavity, and the piston is connected to a driving assembly for driving its axial reciprocating motion.

2. The corn insulation fresh-keeping box according to claim 1, characterized in that: The driving assembly includes a bottom shell fixedly assembled on the bottom of the box body, and an active cavity is formed inside the bottom shell. The driving assembly also includes an active plate vertically slidably arranged in the active cavity, the center of the active plate has a circular through hole, a counterweight plate is arranged in the circular through hole, elastic ropes are evenly arranged along the circumferential direction between the outer circumferential surface of the counterweight plate and the inner wall of the central through hole, a first return spring is evenly arranged between the bottom surface of the active plate and the bottom of the active cavity, a connecting shaft is coaxially connected to the bottom of the piston, the bottom end of the connecting shaft passes through the bottom wall of the box body, extends into the active cavity and is fixedly connected to the active plate through a connecting rod.

3. The corn insulation fresh-keeping box according to claim 1, characterized in that: Inelastic ropes are evenly arranged between the outer circumferential surface of the counterweight plate and the inner wall of the central through hole along the circumferential direction, and the inelastic ropes are initially in a relaxed state.

4. The corn insulation fresh-keeping box according to claim 3, characterized in that: A through hole adapted to the middle cylinder is provided at the center of the sealing cover body, the top end of the middle cylinder passes through the through hole and is threadedly connected with a blocking cover, a contact surface that contacts the bottom surface of the sealing cover body is provided on the outer side of the middle cylinder, a first sealing gasket is provided between the contact surface and the sealing cover body, and a second sealing gasket is provided between the sealing cover body and the top of the side wall of the box body.

5. The corn insulation fresh-keeping box according to claim 3, characterized in that: A plurality of air permeable cavities with a cylindrical cross-section are formed between the outer shell and the inner shell of the side wall of the box body, wherein a protruding first arc portion is formed on the outer shell at the position of the air permeable cavity, and a protruding second arc portion is formed on the inner shell at the position of the air permeable cavity, first air ports are evenly arranged on both sides of the first arc portion, and second air ports are evenly arranged on both sides of the second arc portion, and a blocking member is assembled inside the air permeable cavity, the blocking member includes arc-shaped plates symmetrically arranged on both sides of the air permeable cavity and tightly attached to the inner wall of the air permeable cavity, and a driving shaft for driving a pair of arc-shaped plates to rotate around the central axis of the air permeable cavity, and the arc-shaped plates can block the first air port and the second air port under the drive of the driving shaft.

6. The corn insulation fresh-keeping box according to claim 5, characterized in that: Elastic telescopic parts are fixedly installed at the two corresponding arc-shaped plates outside the driving shaft, the fixed end of the elastic telescopic part is fixedly connected to the driving shaft, and the telescopic end of the elastic telescopic part is fixedly connected to the corresponding arc-shaped plate.

7. The corn insulation fresh-keeping box according to claim 6, characterized in that: The elastic telescopic part includes a fixed plate fixedly connected to the driving shaft, a telescopic cavity is arranged in the fixed plate, a telescopic plate is slidably arranged in the telescopic cavity, the side of the telescopic plate away from the driving shaft is fixedly connected to the arc-shaped plate, a second return spring is arranged between the side of the telescopic plate close to the driving shaft and the side of the telescopic cavity, a counterweight frame is slidably arranged on the outer side of the fixed plate, connecting holes are symmetrically arranged on the fixed plate on the side of the telescopic cavity close to the driving shaft, a connecting rope is arranged in the connecting hole, and both ends of the connecting rope are respectively fixedly connected to the telescopic plate and the counterweight frame; the corn insulation and fresh-keeping box also includes a driving device for driving the driving shaft to rotate.