Cold storage turnover box for agricultural products

Abstract

The invention relates to the technical field of agricultural products, in particular to an agricultural product cold storage turnover box which comprises a storage assembly, a sealing assembly is arranged at the upper end of the storage assembly, an air storage part is arranged on one side of the storage assembly, and a purification assembly and a phase change cold storage plate are arranged in the storage assembly. A communicating assembly, a ventilation assembly and a second elastic circulation assembly are arranged at the lower end in the storage assembly, the ventilation assembly comprises a first elastic circulation component, a limiting component is arranged at the lower end of the first elastic circulation component, and a balancing weight is fixedly connected to one end of the first elastic circulation component. Through the arrangement of the storage assembly, the sealing assembly, the phase change cold storage plate, the ventilation assembly and the second elastic circulation assembly, cold storage circulation can be achieved, meanwhile, internal gas circulation and internal and external gas circulation of the cold storage circulation box are achieved, manual regular ventilation is not needed, and through the arrangement of a non-electric mechanism, the energy consumption is reduced. Gas can be conveyed during acceleration and deceleration operation of a vehicle and bumping of the vehicle, and the use energy consumption of the cold storage turnover box is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of agricultural product technology, and in particular to a cold storage turnover box for agricultural products. Background Technology

[0002] Cold storage turnover boxes are insulated containers used for cold chain transportation. They are mainly used for agricultural products, fresh food, medicine and other items that require low-temperature preservation. Cold storage turnover boxes can maintain a low-temperature environment inside the box for a long time to ensure that the products do not deteriorate or spoil during transportation. For example, strawberries are a common agricultural product and are often transported by cold storage turnover boxes over short distances.

[0003] For example, Chinese Patent Publication No. CN220181432U discloses a turnover box for transporting agricultural products, which relates to the field of agricultural product transportation technology. Addressing the problem that existing turnover boxes for transporting and storing agricultural products are not conducive to ventilation, easily leading to the rotting of vegetables and fruits and the inability to retain moisture, resulting in excessive water loss and spoilage, thus rendering them inedible and wasteful, the following solution is proposed: The turnover box includes a sealing cover at the top, a support component at the bottom of the inner wall, a refrigeration mechanism on one side of the outer wall, and a ventilation mechanism on the top.

[0004] The aforementioned agricultural product turnover boxes achieve refrigerated transportation of agricultural products by installing semiconductor cooling devices inside the boxes. For example, when strawberry planting bases are harvesting and transporting strawberries, they are usually stacked in storage boxes. However, planting bases are usually located in suburban or rural areas with poor road conditions and bumpy transportation. Installing semiconductor cooling devices on agricultural product turnover boxes not only significantly increases the use and maintenance costs of the turnover boxes, but the vibration environment can also easily cause the semiconductor cooling devices to fail, resulting in uncontrolled temperature inside the turnover box, increasing the risk of strawberry spoilage, and thus leading to high logistics loss costs in strawberry turnover transportation. Summary of the Invention

[0005] The purpose of this invention is to solve the problems of high cost and easy internal temperature runaway leading to damage to agricultural products in the existing cold storage turnover boxes, and to propose a cold storage turnover box for agricultural products.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an agricultural product cold storage turnover box, including a storage component, a sealing component is provided at the upper end of the storage component, a gas storage section is provided on one side of the storage component, a purification component and a phase change cold storage plate are provided inside the storage component, and a connecting component, a ventilation component and a second flexible flow component are provided at the lower end of the storage component, and two sets of the ventilation component and the second flexible flow component are provided at intervals. The storage component includes a base plate, with an insulation shell fixedly connected to the upper end of the base plate. Both the base plate and the insulation shell are made of insulation material. L-shaped limiting strips are fixedly connected to the four corners inside the insulation shell. A placement frame is fixedly connected between the four sets of L-shaped limiting strips. The ventilation component includes a first elastic flow component that penetrates the lower end of the placement frame. A limiting component is provided at the lower end of the first elastic flow component, and the limiting component penetrates the base plate. A counterweight is fixedly connected to one end of the first elastic flow component.

[0007] Preferably, the purification component and the phase change cold storage plate are provided in two sets. The two sets of purification components and phase change cold storage plates are staggered on the four sides inside the storage component. The phase change cold storage plate is slidably engaged between the two sets of L-shaped limiting strips. Multiple sets of placement frames are stacked inside the placement frame. Handle holes are provided on both sides of the placement frame. A moving part is provided at the lower end of the bottom plate, and four sets of moving parts are spaced apart.

[0008] Preferably, the connecting component includes a connecting pipe fixedly connected to the upper end of the base plate. Multiple sets of connecting holes are opened on the outer surface of the connecting pipe near the lower end. An L-shaped air outlet pipe and a fixed pipe are fixedly connected through the outer surface of the connecting pipe, and four sets of L-shaped air outlet pipes are arranged in a ring at intervals. Multiple sets of L-shaped air outlet pipes are movably connected to multiple sets of placement frames. Multiple sets of air outlet holes are opened on the outer surface of the four sets of L-shaped air outlet pipes. Multiple sets of air outlet holes face the center of the placement frame. The other end of the fixed pipe is connected to the air outlet end of the air storage unit. An electric valve is fixedly installed on the end of the fixed pipe near the connecting pipe.

[0009] Preferably, the first elastic flow component includes a second one-way tube that is rotatably connected to the lower end of the placement frame. The lower end of the second one-way tube is fixedly connected to an installation tube, and the gas flow direction of the second one-way tube is from the inside of the installation tube to the outside. A circular hole is opened at one end of the installation tube near the counterweight. A third one-way tube is fixedly connected to one end of the installation tube, and the gas flow direction of the third one-way tube is from the outside to the inside of the installation tube. The counterweight is fixedly connected to the other end of the installation tube. A first spring is fixedly connected to the inner wall of the end of the installation tube near the counterweight. A first fixing block is fixedly connected to one end of the first spring. A first piston is fixedly connected to one end of the first fixing block. A first ball is rolled on the outer surface of the first fixing block, and multiple sets of the first ball are arranged in a circular array. The outer surfaces of the first piston and the multiple sets of the first ball are in contact with the inner wall of the installation tube.

[0010] Preferably, the limiting component includes a fourth one-way pipe fixedly connected to the lower end of the mounting pipe. The fourth one-way pipe achieves one-way flow function through a check valve, and the gas flow direction of the fourth one-way pipe is from the outside to the inside of the mounting pipe. A rotating ring is fixedly connected to the outer surface of the fourth one-way pipe. An embedding groove is opened at the lower end of the rotating ring, and four sets of embedding grooves are arranged in a circular array. Four sets of spring buckles are slidably engaged at the upper end of the base plate. The four sets of spring buckles are respectively embedded in the four sets of embedding grooves, and the contact surface between the spring buckles and the embedding grooves is an arc surface.

[0011] Preferably, a T-shaped connecting rod is fixedly connected to the inside of the fourth unidirectional tube near the lower edge, and a cleaning brush is fixedly connected to the lower end of the T-shaped connecting rod. Two sets of mounting grooves and movable grooves are opened at the lower end of the base plate. A mounting frame is fixedly connected to the inner wall of the movable groove, and an ePTFE membrane is fixedly connected to the inner side of the mounting frame. The T-shaped connecting rod is rotatably connected to the mounting frame through it, and the upper surface of the cleaning brush is in contact with the lower surface of the ePTFE membrane.

[0012] Preferably, the purification component includes a support block fixedly connected to the upper end of the base plate, a storage container and a moisture-absorbing plate slidably engaged between the two sets of L-shaped limiting strips, an ethylene absorbent placed inside the storage container, dense fine pores opened on the outer surface of the storage container, and the moisture-absorbing plate disposed between the storage container and the inner wall of the insulation shell, multiple sets of flow holes opened on one side of the storage container, and the side of the storage container facing the placement frame is wavy, and multiple sets of through holes opened on the side of the placement frame near the storage container.

[0013] Preferably, the sealing assembly includes a sealing cap that contacts the upper end of the insulation shell and an embedded block that is fixedly connected to the upper end of the sealing cap. The sealing cap and the insulation shell are detachably connected by a snap fastener. A gas sensor and two sets of abutments are fixedly connected at intervals inside the sealing cap. Both sets of abutments are in contact with the side of the placement frame. A first one-way tube is provided through one side of the sealing cap, and one end of the first one-way tube is connected to the inside of the sealing cap. The first one-way tube allows gas inside the insulation shell to be discharged. A fitting groove is provided at the bottom of the base plate for the embedded block to fit into, and the height of the fitting groove is less than the height of the embedded block.

[0014] Preferably, the movable component includes a threaded post fixedly connected inside the mounting groove, a threaded sleeve threadedly connected to the outer surface of the threaded post, and the threaded sleeve engaging with the mounting groove, with a roller fixedly connected to the lower end of the threaded sleeve.

[0015] Preferably, the second elastic flow assembly includes a fixed cylinder detachably and fixedly connected to the upper end of the base plate and a fifth one-way pipe that is fixedly connected to the outer surface of the fixed cylinder. The flow direction of the fifth one-way pipe is from the outside of the fifth one-way pipe to the inside of the fixed cylinder. A circular hole is opened near the lower end of the outer surface of the fixed cylinder. A connecting bend is fixedly connected through the fifth one-way pipe and the fixed cylinder. An electric valve is fixedly installed on the connecting bend. A second spring and an electric telescopic rod are fixedly connected at intervals at the upper end of the base plate. The second spring and the electric telescopic rod are both located inside the fixed cylinder. A second fixed block is fixedly connected to the upper end of the second spring. The upper end of the electric telescopic rod contacts the center of the lower end of the second fixed block. Multiple sets of second balls are rolledly connected to the outer surface of the second fixed block. A second piston is fixedly connected to the upper end of the second fixed block. The outer surfaces of the second piston and the multiple sets of second balls are in contact with the inner wall of the fixed cylinder. A sixth one-way pipe is fixedly connected through the upper end of the fixed cylinder and the placement frame. The flow direction of the sixth one-way pipe is from the inside of the fixed cylinder to the inside of the placement frame.

[0016] Compared with existing technologies, the advantages of this invention are: 1. This invention, through the arrangement of storage components, sealing components, phase change cold storage plates, ventilation components, and a second flexible flow component, can maintain the temperature inside the insulation shell within a suitable range, thereby enabling cold storage turnover. During the transportation of agricultural products, it realizes gas circulation inside the cold storage turnover box and gas flow between the inside and outside. The internal gas circulation can improve the temperature uniformity inside the insulation shell, avoiding the spoilage of some agricultural products due to temperature differences. At the same time as the internal gas circulation, some outside air can be introduced into the insulation shell, which can continuously reduce the carbon dioxide content inside the insulation shell, thereby meeting the breathing needs of agricultural products without the need for manual periodic ventilation. In addition, the ventilation component and the second flexible flow component are both non-electric mechanisms, which can transport gas through the reciprocating movement of the first piston during vehicle acceleration and deceleration and vehicle bumps, without the need for a refrigeration mechanism and fan, effectively reducing the energy consumption of the cold storage turnover box. 2. By setting up the first one-way pipe, the gas storage section and the connecting component, the present invention can enable the preservation gas to quickly fill the interior of the insulation shell after the phase change cold storage plate fails, which can delay the ripening and spoilage of agricultural products, extend the transportable time, and thus reduce the losses caused by the failure of the phase change cold storage plate during transportation. 3. The present invention, through the setting of the ventilation component, enables the angle of the mounting pipe to be adaptively adjusted by the inertial effect generated by the counterweight when the vehicle is moving, and the mounting bracket can be cleaned during the adjustment process. No manual adjustment or electric equipment is required, thus avoiding the possibility of errors caused by manual adjustment and damage to electronic equipment. 4. By incorporating a connecting component and a second elastic flow component, this invention enables the air above the bottom plate to be drawn into the fixed cylinder and mixed with compressed air through the vibration of the second piston and the second fixed block when the vehicle is stationary. This low-temperature mixed gas is then introduced into the placement frame, allowing for continuous circulation of gas within the turnover box even when the vehicle is stationary. This reduces temperature differences and also maintains the respiration of agricultural products through the release of the compressor. 5. The present invention improves the convenience of moving the cold storage turnover box in small quantities by using detachable threaded sleeves and rollers. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an agricultural product cold storage turnover box proposed in this invention; Figure 2 This is a schematic diagram of the storage components, purification components, phase change cold storage plate, and communication components of an agricultural product cold storage turnover box proposed in this invention; Figure 3 This is a schematic diagram of the L-shaped limiting strip, purification components, and phase change cold storage plate structure of an agricultural product cold storage turnover box proposed in this invention. Figure 4 This is a schematic diagram of the purification component structure of an agricultural product cold storage turnover box proposed in this invention; Figure 5 This is a cross-sectional view of the overall structure of an agricultural product cold storage turnover box proposed in this invention; Figure 6 This is a cross-sectional view of the enclosed component structure of an agricultural product cold storage turnover box proposed in this invention; Figure 7 This is a schematic diagram of the connecting component, the ventilation component, and the second flexible flow component of an agricultural product cold storage turnover box proposed in this invention; Figure 8 This is a cross-sectional view of the first elastic flow component structure of an agricultural product cold storage turnover box proposed in this invention; Figure 9 This is a schematic diagram of the limiting component structure of an agricultural product cold storage turnover box proposed in this invention; Figure 10 For the present invention Figure 9 Enlarged detail image of point A in the middle; Figure 11 This is a schematic diagram showing the disassembled structure of the mounting groove, spring buckle, and rotating ring of an agricultural product cold storage turnover box proposed in this invention; Figure 12 This is a cross-sectional view of the second elastic flow component structure of an agricultural product cold storage turnover box proposed in this invention; Figure 13 This is a schematic diagram showing the disassembled structure of the moving component of an agricultural product cold storage turnover box proposed in this invention.

[0018] In the diagram: 1. Storage component; 11. Base plate; 12. Insulation shell; 13. L-shaped limiting strip; 14. Placement frame; 141. Through hole; 15. Moving part; 151. Threaded post; 152. Threaded sleeve; 153. Roller; 16. Placement frame; 17. Mounting slot; 18. Spring buckle; 19. Movable slot; 2. Sealing component; 21. Sealing cover; 22. Embedded block; 23. Backing plate; 24. Gas sensor; 25. First one-way pipe; 3. Gas storage section; 4. Purification component; 41. Support block; 42. Storage container; 43. Moisture-absorbing plate; 44. Flow hole; 5. Phase change cold storage plate; 6. Connecting component; 61. Connecting pipe; 62. L-shaped gas outlet pipe; 63. Gas outlet; 64. Fixed pipe; 7. Ventilation. Components; 71. First elastic flow component; 711. Second one-way tube; 712. Mounting tube; 713. Third one-way tube; 714. First spring; 715. First fixing block; 716. First piston; 717. First ball bearing; 72. Limiting component; 721. Fourth one-way tube; 722. Rotating ring; 723. Embedded groove; 724. T-shaped connecting rod; 725. Cleaning brush; 726. Mounting bracket; 727. ePTFE membrane; 73. Counterweight; 8. Second elastic flow component; 81. Fixing cylinder; 82. Fifth one-way tube; 83. Connecting bend; 84. Second spring; 85. Electric telescopic rod; 86. Second fixing block; 87. Second piston; 88. Second ball bearing; 89. Sixth one-way tube. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] like Figures 1-13 As shown, an agricultural product cold storage turnover box includes a storage component 1, a sealing component 2 at the upper end of the storage component 1, a gas storage section 3 on one side of the storage component 1, a purification component 4 and a phase change cold storage plate 5 inside the storage component 1, and a connecting component 6, a ventilation component 7 and a second flexible flow component 8 at the lower end of the storage component 1. The ventilation component 7 and the second flexible flow component 8 are each arranged in two sets at intervals. The sealing component 2 is used to seal the upper end of the storage component 1, the storage component 1 is used for cold storage and heat preservation, the purification component 4 is used to absorb ethylene, the phase change cold storage plate 5 is used to absorb heat to maintain low temperature, and the ventilation component 7 and the second flexible flow component 8 are both used to promote gas circulation inside the storage component 1. It should be noted that storing compressed gas and compressed preservation gas in the gas storage section 3 and controlling the release of the two gases separately is a known prior art, and those skilled in the art are capable of conceiving the specific structure. The storage component 1 includes a base plate 11, with an insulation shell 12 fixedly connected to the upper end of the base plate 11. Both the base plate 11 and the insulation shell 12 are made of insulation material. L-shaped limiting strips 13 are fixedly connected to the four corners inside the insulation shell 12. A placement frame 14 is fixedly connected between the four sets of L-shaped limiting strips 13. The ventilation component 7 includes a first elastic flow component 71 that passes through the lower end of the placement frame 14. A limiting component 72 is provided at the lower end of the first elastic flow component 71, and the limiting component 72 passes through the base plate 11. A counterweight block 73 is fixedly connected to one end of the first elastic flow component 71. The first elastic flow component 71 can promote the flow of gas by utilizing the inertia of the turnover box in the direction of travel during transportation.

[0021] The purification component 4 and the phase change cold storage plate 5 are each provided in two sets. The two sets of purification components 4 and phase change cold storage plates 5 are arranged alternately on the four sides inside the storage component 1. The phase change cold storage plate 5 is slidably engaged between the two sets of L-shaped limiting strips 13. Multiple sets of placement frames 16 are stacked inside the placement frame 14. Handle holes are opened on both sides of the placement frame 16. The bottom of the base plate 11 is provided with a moving part 15, and four sets of moving parts 15 are arranged at intervals. The agricultural products (strawberries) and protective pads can be placed inside the placement frame 16 to complete the storage. The moving part 15 can be used to move the turnover box when it is being transported. The placement frame 16 can be taken out by pulling it upward.

[0022] The connecting component 6 includes a connecting pipe 61 fixedly connected to the upper end of the base plate 11. Multiple sets of connecting holes are opened on the outer surface of the connecting pipe 61 near the lower end. An L-shaped vent pipe 62 and a fixed pipe 64 are fixedly connected through the outer surface of the connecting pipe 61. Four sets of L-shaped vent pipes 62 are arranged in a ring at intervals. Multiple sets of L-shaped vent pipes 62 are movably connected to multiple sets of placement frames 16. Multiple sets of vent holes 63 are opened on the outer surface of the four sets of L-shaped vent pipes 62. Multiple sets of vent holes 63 face the center of the placement frame 16. The other end of the fixed pipe 64 is connected to the vent end of the gas storage section 3. An electric valve is fixedly installed on the end of the fixed pipe 64 near the connecting pipe 61. The gas inside the gas storage section 3 can enter the interior of the connecting pipe 61 through the fixed pipe 64. The electric valve can control whether the gas flows. Then, some gas is discharged from the connecting hole, and other gas can be quickly distributed to the inside of the multiple sets of placement frames 16 through the L-shaped vent pipes 62 and multiple sets of vent holes 63.

[0023] The first elastic flow component 71 includes a second one-way tube 711 that is rotatably connected through the lower end of the placement frame 14. A mounting tube 712 is fixedly connected to the lower end of the second one-way tube 711, and the gas flow direction of the second one-way tube 711 is from the inside to the outside of the mounting tube 712. A circular hole is opened at one end of the mounting tube 712 near the counterweight 73. A third one-way tube 713 is fixedly connected to one end of the mounting tube 712, and the gas flow direction of the third one-way tube 713 is from the outside to the inside of the mounting tube 712. The counterweight 73 is fixedly connected to the other end of the mounting tube 712, and a first spring 7 is fixedly connected to the inner wall of the end of the mounting tube 712 near the counterweight 73. 14. A first fixing block 715 is fixedly connected to one end of the first spring 714, and a first piston 716 is fixedly connected to one end of the first fixing block 715. A first ball bearing 717 is rolledly connected to the outer surface of the first fixing block 715, and multiple sets of the first ball bearing 717 are arranged in a ring array. The outer surfaces of the first piston 716 and the multiple sets of first ball bearing 717 are in contact with the inner wall of the mounting tube 712. The counterweight 73 is used to increase the weight of one end of the mounting tube 712. When the turnover box is transported in the vehicle, when the vehicle brakes or accelerates, the counterweight 73 will drive the mounting tube 712 to rotate under the action of inertia, so that the length direction of the mounting tube 712 is consistent with the direction of travel.

[0024] The limiting component 72 includes a fourth one-way pipe 721 fixedly connected to the lower end of the mounting pipe 712. The fourth one-way pipe 721 achieves one-way flow function through a shut-off check valve. It should be noted that the switching between one-way flow and bi-directional shut-off of the fourth one-way pipe 721 section through the shut-off check valve is a known prior art, and those skilled in the art can conceive of the specific structure. Furthermore, the gas flow direction of the fourth one-way pipe 721 is from the outside to the inside of the mounting pipe 712, and the outer surface of the fourth one-way pipe 721... A rotating ring 722 is fixedly connected. The lower end of the rotating ring 722 is provided with an embedding groove 723, and four sets of embedding grooves 723 are arranged in a circular array. Four sets of spring clips 18 are slidably engaged at the upper end of the base plate 11. The four sets of spring clips 18 are respectively embedded in the four sets of embedding grooves 723, and the contact surface between the spring clips 18 and the embedding grooves 723 is an arc surface. The position of the rotating ring 722 can be restricted by the four sets of spring clips 18, thereby preventing the disorderly rotation of the fourth one-way tube 721 and the mounting tube 712.

[0025] A T-shaped connecting rod 724 is fixedly connected to the lower edge of the fourth one-way tube 721. A cleaning brush 725 is fixedly connected to the lower end of the T-shaped connecting rod 724. Two sets of mounting slots 17 and movable slots 19 are opened at the lower end of the base plate 11. A mounting frame 726 is fixedly connected to the inner wall of the movable slot 19. An ePTFE membrane 727 is fixedly connected to the inner side of the mounting frame 726. The T-shaped connecting rod 724 is rotatably connected to the mounting frame 726. The upper surface of the cleaning brush 725 is in contact with the lower surface of the ePTFE membrane 727. When the mounting tube 712 rotates, the cleaning brush 725 can also rotate through the fourth one-way tube 721 and the T-shaped connecting rod 724, so that the cleaning brush 725 can lightly sweep on the lower surface of the mounting frame 726.

[0026] The purification component 4 includes a support block 41 fixedly connected to the upper end of the base plate 11. A storage container 42 and a moisture-absorbing plate 43 are slidably engaged between two sets of L-shaped limiting strips 13. An ethylene absorbent is placed inside the storage container 42. Dense fine pores are opened on the outer surface of the storage container 42. The moisture-absorbing plate 43 is set between the storage container 42 and the inner wall of the insulation shell 12. Multiple sets of flow holes 44 are opened on one side of the storage container 42. The side of the storage container 42 facing the placement frame 14 is set in a wave shape. Multiple sets of through holes 141 are opened on the side of the placement frame 14 near the storage container 42. The wave shape design can increase the contact area between the gas and the storage container 42. The gas discharged from the through holes 141 can contact the moisture-absorbing plate 43 through the flow holes 44.

[0027] The sealing component 2 includes a sealing cover 21 that is in contact with the upper end of the insulation shell 12 and an embedded block 22 that is fixedly connected to the upper end of the sealing cover 21. The sealing cover 21 and the insulation shell 12 are detachably connected by a snap fastener. A gas sensor 24 and two sets of abutment plates 23 are fixedly connected at intervals on the inner side of the sealing cover 21. Both sets of abutment plates 23 are in contact with the side of the placement frame 16. A first one-way tube 25 is provided through one side of the sealing cover 21, and one end of the first one-way tube 25 is connected to the inside of the sealing cover 21. The first one-way tube 25 allows the gas inside the insulation shell 12 to be discharged. The bottom of the base plate 11 has a fitting groove for the embedded block 22 to fit into, and the height of the fitting groove is less than the height of the embedded block 22. With the setting of the embedded block 22 and the fitting groove, it is easy to stack multiple sets of turnover boxes, and there is a gap between the base plate 11 and the sealing cover 21 when stacking.

[0028] The movable component 15 includes a threaded post 151 fixedly connected inside the mounting groove 17. A threaded sleeve 152 is threadedly connected to the outer surface of the threaded post 151, and the threaded sleeve 152 is engaged with the mounting groove 17. A roller 153 is fixedly connected to the lower end of the threaded sleeve 152.

[0029] The second elastic flow assembly 8 includes a fixed cylinder 81 detachably and fixedly connected to the upper end of the base plate 11, and a fifth one-way pipe 82 that penetrates and is fixedly connected to the outer surface of the fixed cylinder 81. The flow direction of the fifth one-way pipe 82 is from the outside of the fifth one-way pipe 82 to the inside of the fixed cylinder 81. A circular hole is opened near the lower end of the outer surface of the fixed cylinder 81. A connecting bend 83 is fixedly connected between the fifth one-way pipe 82 and the fixed pipe 64. An electric valve is fixedly installed on both the connecting bend 83 and the fixed pipe 64. A second spring 84 and an electric telescopic rod 85 are fixedly connected at intervals at the upper end of the base plate 11. The second spring 84 and the electric telescopic rod 85 are both located inside the fixed cylinder 81. A second fixing block 86 is fixedly connected to the upper end of the second spring 84, and the upper end of the electric telescopic rod 85 is connected to the center of the lower end of the second fixing block 86. The outer surface of the second fixed block 86 is connected to multiple sets of second balls 88. The upper end of the second fixed block 86 is fixedly connected to a second piston 87, and the outer surfaces of the second piston 87 and the multiple sets of second balls 88 are in contact with the inner wall of the fixed cylinder 81. The upper end of the fixed cylinder 81 is fixedly connected to the placement frame 14 through a sixth one-way tube 89, and the flow direction of the sixth one-way tube 89 is from the inside of the fixed cylinder 81 to the inside of the placement frame 14. The second balls 88 are used to reduce friction when the second fixed block 86 moves. When the turnover box vibrates, under the elastic force of the second spring 84, the second piston 87 and the second balls 88 will vibrate up and down, thereby drawing air from the fifth one-way tube 82 into the fixed cylinder 81 and delivering it to the inside of the placement frame 14 through the sixth one-way tube 89, thereby realizing the circulation of gas.

[0030] In this invention, when multiple sets of cold storage turnover boxes need to be transported, the multiple sets of cold storage turnover boxes are stacked layer by layer, so that the embedded block 22 and the fitting groove are fitted one by one. This can prevent the cold storage turnover boxes from sliding due to vibration during transportation, thereby reducing unnecessary losses. During transportation, the two sets of phase change cold storage plates 5 can absorb the heat inside the insulation shell 12, and can maintain the temperature inside the insulation shell 12 within a suitable range. As hot air rises and cold air sinks, some cold air will accumulate at the position between the lower end of the placement frame 14 and the upper end of the bottom plate 11. When transporting agricultural products (strawberries) from the planting base, the poor road conditions cause vehicles to frequently accelerate and decelerate, resulting in significant vibrations. During these accelerations and decelerations, the first piston 716 and the first fixed block 715 slide along the mounting tube 712 due to inertia. The spring force of the first spring 714 amplifies the amplitude. When the first piston 716 approaches the counterweight 73, cold air above the base plate 11 can enter the mounting tube 712 through the third one-way pipe 713, while a small amount of external gas can also pass through. The mixed gas enters the mounting tube 712 through the ePTFE membrane 727 and the fourth one-way tube 721. It then enters the inner side of the placement frame 14 through the second one-way tube 711 and gradually diffuses among the multiple placement frames 16. As the mixed gas enters the inner side of the placement frame 14, the gas inside the original placement frame 14 contains ethylene and carbon dioxide produced by the respiration of agricultural products (strawberries). This gas passes through the through hole 141 and comes into contact with the moisture-absorbing plate 43 and the storage container 42. The ethylene absorbent and the moisture-absorbing plate 43 absorb the ethylene and moisture contained in the gas, thereby reducing the moisture content of agricultural products (strawberries). To mitigate the risk of spoilage during strawberry transportation, some of the gas inside the placement frame 14 can be discharged from the insulation shell 12 through the first one-way pipe 25. Similarly, the vertical vibration of the second piston 87 and the second ball bearing 88 promotes gas circulation when the vehicle is bumpy. Through the arrangement of the storage component 1, the sealing component 2, the ventilation component 7, and the second flexible flow component 8, gas circulation inside the cold storage turnover box and gas flow between the inside and outside are achieved during the transportation of agricultural products (strawberries). The internal gas circulation can improve the temperature uniformity inside the insulation shell 12, avoiding the spoilage of some agricultural products (strawberries) due to temperature differences. At the same time as the internal gas circulation, some outside air can be introduced into the insulation shell 12, which can continuously reduce the carbon dioxide content inside the insulation shell 12, thereby meeting the breathing needs of agricultural products (strawberries) without the need for manual periodic ventilation. In addition, the ventilation component 7 and the second flexible flow component 8 are both non-electric mechanisms, which can transport gas through the reciprocating movement of the first piston 716 during acceleration and deceleration operations and when the vehicle is bumpy, without the need for a refrigeration mechanism and fan, effectively reducing the energy consumption of the cold storage turnover box. The gas sensor 24 can detect the temperature inside the insulation shell 12. When the temperature rises abnormally, it indicates that the phase change cold storage plate 5 has failed. At this time, the gas storage unit 3 quickly inputs the fresh-keeping gas into the connecting pipe 61 through the fixed pipe 64. At this time, the end of the fixed pipe 64 is opened and the two sets of connecting bends 83 are closed, so that the fresh-keeping gas can quickly fill the interior of the insulation shell 12. Excess gas can be discharged from the interior of the insulation shell 12 through the first one-way pipe 25. Then the fourth one-way pipe 721 is cut off in both directions to prevent external gas from entering. This can delay the ripening and spoilage of agricultural products (strawberries), extend the transportable time, and reduce the losses caused by the failure of the phase change cold storage plate 5 during transportation. Due to the different transport vehicles, the stacking direction of the turnover boxes will vary depending on whether they are stacked horizontally or vertically. When the stacking direction of the turnover boxes changes, the length direction of the mounting tube 712 is perpendicular to the direction of travel. During the transportation process, when the vehicle accelerates or decelerates, the counterweight 73 will generate a torque due to inertia, thereby driving the mounting tube 712 to rotate. This causes the rotating ring 722 to compress the spring clip 18 until the mounting tube 712 rotates 90 degrees, at which point the length direction of the mounting tube 712 is aligned with the direction of travel. Subsequently, the spring clip 18 will re-embed into the embedding groove 723 and limit the rotation ring 722. When the first elastic flow component 71 is in normal working order, it promotes the flow of gas. When the mounting tube 712 rotates, it will drive the fourth one-way tube 721 to rotate as well, so that the cleaning brush 725 can lightly sweep the lower surface of the mounting frame 726, thus cleaning the mounting frame 726. Through the setting of the ventilation component 7, the angle of the mounting tube 712 can be adaptively adjusted by the inertia generated by the counterweight 73 when the vehicle is moving. During the adjustment process, the mounting frame 726 can be cleaned without manual adjustment or the setting of electric equipment, thus avoiding the possibility of errors caused by manual adjustment and damage to electronic equipment. When the transport vehicle stops for any reason, the electric valve closes the end of the fixed pipe 64 connected to the connecting pipe 61. Then, compressed air is slowly delivered into the fixed pipe 64 through the air storage section 3. At this time, the air can enter the fixed cylinder 81 through the connecting bend 83. At the same time, the electric telescopic rod 85 intermittently extends and retracts to push the second fixed block 86. Since the electric telescopic rod 85 is only in contact with the second fixed block 86, the second piston 87 and the second fixed block 86 will vibrate up and down under the elastic force of the second spring 84 after the electric telescopic rod 85 retracts. This can draw the air above the bottom plate 11 into the fixed cylinder 81 and mix it with the compressed air. Then, the mixed gas can enter the placement frame 14 through the sixth one-way pipe 89. Since the air temperature above the bottom plate 11 is low, the temperature of the compressed air is also decreasing when it is delivered in the fixed pipe 64 and the connecting bend 83. By mixing the gas, the temperature of the gas entering the placement frame 14 can be quickly reduced. This allows for continuous circulation of gas inside the turnover box when the vehicle is stationary. This reduces the temperature difference and also maintains the respiration of the agricultural products (strawberries) through the release of the compressor. When a small number of cold storage turnover boxes need to be moved, the threaded sleeve 152 and roller 153 are installed on the threaded post 151 of a group of turnover boxes. Then, the remaining turnover boxes are stacked on top of the turnover box, and the turnover box is pushed to move multiple groups of turnover boxes synchronously. No additional conveying equipment is required. The setting of multiple sets of embedding blocks 22 and fitting grooves reduces the possibility of sliding and tipping when pushing and moving.

[0031] 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 cold storage turnover box for agricultural products, comprising a storage component (1), characterized in that, The storage component (1) is provided with a sealing component (2) at the upper end, a gas storage section (3) is provided on one side of the storage component (1), a purification component (4) and a phase change cold storage plate (5) are provided inside the storage component (1), and a connecting component (6), a ventilation component (7) and a second flexible flow component (8) are provided at the lower end of the storage component (1), and two sets of ventilation component (7) and second flexible flow component (8) are provided at intervals. The storage component (1) includes a base plate (11), and an insulation shell (12) is fixedly connected to the upper end of the base plate (11). Both the base plate (11) and the insulation shell (12) are made of insulation material. L-shaped limiting strips (13) are fixedly connected to the four corners inside the insulation shell (12). A placement frame (14) is fixedly connected between the four sets of L-shaped limiting strips (13). The ventilation component (7) includes a first elastic flow component (71) that passes through the lower end of the placement frame (14). A limiting component (72) is provided at the lower end of the first elastic flow component (71), and the limiting component (72) passes through the base plate (11). A counterweight (73) is fixedly connected to one end of the first elastic flow component (71).

2. The agricultural product cold storage turnover box according to claim 1, characterized in that, The purification component (4) and the phase change cold storage plate (5) are each provided in two sets. The two sets of purification components (4) and phase change cold storage plates (5) are alternately arranged on the four sides inside the storage component (1). The phase change cold storage plate (5) is slidably engaged between the two sets of L-shaped limiting strips (13). Multiple sets of placement frames (16) are stacked inside the placement frame (14). Handle holes are provided on both sides of the placement frame (16). A moving part (15) is provided at the lower end of the bottom plate (11), and four sets of moving parts (15) are arranged at intervals.

3. The agricultural product cold storage turnover box according to claim 2, characterized in that, The connecting component (6) includes a connecting pipe (61) fixedly connected to the upper end of the base plate (11). Multiple sets of connecting holes are opened on the outer surface of the connecting pipe (61) near the lower end. An L-shaped air outlet pipe (62) and a fixed pipe (64) are fixedly connected through the outer surface of the connecting pipe (61). Four sets of L-shaped air outlet pipes (62) are arranged in a ring. Multiple sets of L-shaped air outlet pipes (62) are movably connected to multiple sets of placement frames (16). Multiple sets of air outlet holes (63) are opened on the outer surface of the four sets of L-shaped air outlet pipes (62). Multiple sets of air outlet holes (63) face the center of the placement frame (16). The other end of the fixed pipe (64) is connected to the air outlet end of the gas storage part (3). An electric valve is fixedly installed on the end of the fixed pipe (64) near the connecting pipe (61).

4. The agricultural product cold storage turnover box according to claim 3, characterized in that, The first elastic flow component (71) includes a second one-way tube (711) that is rotatably connected to the lower end of the placement frame (14). A mounting tube (712) is fixedly connected to the lower end of the second one-way tube (711), and the gas flow direction of the second one-way tube (711) is from the inside of the mounting tube (712) to the outside. A round hole is opened at one end of the mounting tube (712) near the counterweight (73). A third one-way tube (713) is fixedly connected to one end of the mounting tube (712), and the gas flow direction of the third one-way tube (713) is from the outside to the inside of the mounting tube (712). The counterweight (73) A first spring (714) is fixedly connected to the other end of the mounting tube (712). A first fixing block (715) is fixedly connected to one end of the mounting tube (712) near the counterweight (73). A first piston (716) is fixedly connected to one end of the first fixing block (715). A first ball bearing (717) is rolled on the outer surface of the first fixing block (715). Multiple sets of the first ball bearing (717) are arranged in a ring array. The outer surfaces of the first piston (716) and the multiple sets of the first ball bearing (717) are in contact with the inner wall of the mounting tube (712).

5. The agricultural product cold storage turnover box according to claim 4, characterized in that, The limiting component (72) includes a fourth one-way pipe (721) fixedly connected to the lower end of the mounting pipe (712). The fourth one-way pipe (721) realizes the one-way flow function through the shut-off check valve, and the gas flow direction of the fourth one-way pipe (721) is from the outside to the inside of the mounting pipe (712). A rotating ring (722) is fixedly connected to the outer surface of the fourth one-way pipe (721). An embedding groove (723) is opened at the lower end of the rotating ring (722), and four sets of embedding grooves (723) are arranged in a ring array. Four sets of spring buckles (18) are slidably engaged at the upper end of the base plate (11). The four sets of spring buckles (18) are respectively embedded in the inner side of the four sets of embedding grooves (723), and the contact surface between the spring buckles (18) and the embedding grooves (723) is an arc surface.

6. The agricultural product cold storage turnover box according to claim 5, characterized in that, The fourth unidirectional tube (721) is fixedly connected to a T-shaped connecting rod (724) near the lower edge. A cleaning brush (725) is fixedly connected to the lower end of the T-shaped connecting rod (724). The bottom plate (11) has two sets of mounting grooves (17) and movable grooves (19) at the lower end. A mounting bracket (726) is fixedly connected to the inner wall of the movable groove (19). An ePTFE membrane (727) is fixedly connected to the inner side of the mounting bracket (726). The T-shaped connecting rod (724) and the mounting bracket (726) are rotatably connected through each other. The upper surface of the cleaning brush (725) is in contact with the lower surface of the ePTFE membrane (727).

7. The agricultural product cold storage turnover box according to claim 1, characterized in that, The purification component (4) includes a support block (41) fixedly connected to the upper end of the base plate (11), a storage container (42) and a moisture-absorbing plate (43) are slidably engaged between the two sets of L-shaped limiting strips (13), an ethylene absorbent is placed inside the storage container (42), a dense fine hole is opened on the outer surface of the storage container (42), and the moisture-absorbing plate (43) is set between the storage container (42) and the inner wall of the heat insulation shell (12). Multiple sets of flow holes (44) are opened on one side of the storage container (42), and the side of the storage container (42) facing the placement frame (14) is set as wavy. Multiple sets of through holes (141) are opened on the side of the placement frame (14) close to the storage container (42).

8. The agricultural product cold storage turnover box according to claim 2, characterized in that, The sealing component (2) includes a sealing cover (21) that is in contact with the upper end of the insulation shell (12) and an embedded block (22) that is fixedly connected to the upper end of the sealing cover (21). The sealing cover (21) and the insulation shell (12) are detachably connected by a buckle. A gas sensor (24) and two sets of abutments (23) are fixedly connected at intervals on the inner side of the sealing cover (21). Both sets of abutments (23) are in contact with the side of the placement frame (16). A first one-way tube (25) is provided through one side of the sealing cover (21), and one end of the first one-way tube (25) is connected to the inside of the sealing cover (21). The first one-way tube (25) allows the gas inside the insulation shell (12) to be discharged. The bottom of the base plate (11) is provided with a fitting groove for the embedded block (22) to fit into, and the height of the fitting groove is less than the height of the embedded block (22).

9. The agricultural product cold storage turnover box according to claim 2, characterized in that, The moving part (15) includes a threaded post (151) fixedly connected inside the mounting groove (17), a threaded sleeve (152) is threadedly connected to the outer surface of the threaded post (151), and the threaded sleeve (152) is engaged with the mounting groove (17). A roller (153) is fixedly connected to the lower end of the threaded sleeve (152).

10. A cold storage turnover box for agricultural products according to claim 3, characterized in that, The second elastic flow assembly (8) includes a fixed cylinder (81) detachably fixedly connected to the upper end of the base plate (11) and a fifth one-way pipe (82) that penetrates and is fixedly connected to the outer surface of the fixed cylinder (81). The flow direction of the fifth one-way pipe (82) is from the outside of the fifth one-way pipe (82) to the inside of the fixed cylinder (81). A round hole is opened near the lower end of the outer surface of the fixed cylinder (81). A connecting bend (83) is fixedly connected between the fifth one-way pipe (82) and the fixed pipe (64). An electric valve is fixedly installed on the connecting bend (83). A second spring (84) and an electric telescopic rod (85) are fixedly connected at intervals at the upper end of the base plate (11). The second spring (84) and the electric telescopic rod (85) are fixedly connected at intervals. All are set inside the fixed cylinder (81). The upper end of the second spring (84) is fixedly connected to the second fixed block (86), and the upper end of the electric telescopic rod (85) is in contact with the center of the lower end of the second fixed block (86). Multiple sets of second balls (88) are rolled on the outer surface of the second fixed block (86). The upper end of the second fixed block (86) is fixedly connected to the second piston (87), and the outer surfaces of the second piston (87) and multiple sets of second balls (88) are in contact with the inner wall of the fixed cylinder (81). The upper end of the fixed cylinder (81) is fixedly connected to the placement frame (14) through a sixth one-way tube (89), and the flow direction of the sixth one-way tube (89) is from the inside of the fixed cylinder (81) to the inside of the placement frame (14).

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