Heat-insulating, cooling, anti-corrosion and damp-proof device for low-temperature

Abstract

The device comprises a bottom bin and connecting bins, the upper end of the bottom bin is connected with the lower end of the connecting bin on the lowermost side through evenly-distributed first bolts, and evenly-distributed first bolts are connected between every two vertically-adjacent connecting bins in a threaded mode. The upper end of the connecting bin on the uppermost side is also in threaded connection with the lower end of the top bin through uniformly distributed bolts I; the ventilation mechanism comprises a transverse air pipe, a vertical air pipe and an air pipe, and the end, away from the center of the connecting bin, of the transverse air pipe is connected with the inner wall of the adjacent connecting bin through second bolts which are evenly distributed. Ventilation requirements of the low-temperature bins with different capacities are effectively met, and then the heat insulation, cooling, corrosion prevention and humidity prevention performance of the low-temperature bins is effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of grain storage technology, specifically a low-temperature storage insulation, cooling, corrosion prevention and moisture-proof device. Background Technology

[0002] In the process of grain storage, low-temperature warehouses are important grain storage equipment. A low-temperature warehouse is a storage facility that uses refrigeration equipment to control the internal temperature of the warehouse within a specific low-temperature range in order to maintain the quality and safety of stored goods. The heat insulation, cooling, corrosion prevention, and moisture-proof devices of low-temperature warehouses play a key role in ensuring the stability of the internal environment and extending the shelf life of stored goods.

[0003] In the prior art, patent CN220321686U discloses a low-temperature dehumidification and moisture-proof device, including a box body, which includes an insulated box and a storage area. An evaporator is installed in the insulated box and is connected to a compressor. The insulated box is provided with an air inlet and an air outlet that are both connected to the storage area. It also includes a hot air duct connected to the heating end of the compressor, and the hot air duct is connected to a first heat dissipation branch pipe, which is located in the storage area.

[0004] This type of low-temperature dehumidification and moisture-proof device has a fixed ventilation duct specification, which cannot adapt the ventilation mechanism to changes in the capacity of the low-temperature chamber. At the same time, the distribution of the ventilation duct makes it impossible for the gas entering the low-temperature chamber to be sprayed evenly inside the chamber. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a low-temperature chamber heat insulation, cooling, corrosion prevention and moisture prevention device. The ventilation mechanism can be adjusted accordingly according to the change of the low-temperature chamber capacity to effectively meet the ventilation needs of low-temperature chambers of different capacities, thereby effectively ensuring the heat insulation, cooling, corrosion prevention and moisture prevention performance of the low-temperature chamber, and can effectively solve the problems in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a low-temperature chamber insulation, cooling, corrosion prevention and moisture prevention device, including a bottom chamber and a connecting chamber. The upper end of the bottom chamber is connected to the lower end of the lowest connecting chamber by a uniformly distributed bolt. Two vertically adjacent connecting chambers are also threaded together by a uniformly distributed bolt. The upper end of the uppermost connecting chamber is also threaded together with the lower end of the top chamber by a uniformly distributed bolt. It also includes a ventilation mechanism.

[0007] Ventilation mechanism: It includes horizontal air pipes, vertical air pipes, and air pipes. The end of each horizontal air pipe away from the center of the connecting compartment is connected to the inner wall of the adjacent connecting compartment through evenly distributed bolts. The ends of four adjacent horizontal air pipes near the center of the connecting compartment are connected to the middle of the adjacent vertical air pipes. Cavities are provided inside the lower end of the bottom compartment and the upper end of the top compartment. Air pipes are provided at the center of the top wall of the top compartment and the center of the bottom wall of the bottom compartment. All air pipes are connected to the vertically adjacent vertical air pipes. Evenly distributed through holes are provided in the middle of the horizontal air pipes, vertical air pipes, and air pipes. The ventilation mechanism can be adjusted accordingly to the change of the low temperature compartment capacity, effectively meeting the ventilation needs of low temperature compartments of different capacities, thereby effectively ensuring the heat insulation, cooling, corrosion prevention, and moisture prevention performance of the low temperature compartment.

[0008] Furthermore, a control box is installed on the right side of the bottom compartment. Inside the control box is a control switch group. The input terminal of the control switch group is electrically connected to an external power source to control various electrical appliances.

[0009] Furthermore, the ventilation mechanism also includes connecting rings and annular grooves. The annular grooves are respectively set at the upper and lower ends of the vertical air pipes and at the ends of the two air pipes near the connecting chamber. Connecting rings are inserted between two vertically adjacent annular grooves. Semicircular grooves are set at the right end of the upper surface of the bottom chamber, the left end of the lower surface of the top chamber, the right end of the upper surface of the connecting chamber, and the left end of the lower surface of the connecting chamber. Semicircular ribs are fixedly connected to the left end of the upper surface of the bottom chamber, the right end of the lower surface of the top chamber, the left end of the upper surface of the connecting chamber, and the right end of the lower surface of the connecting chamber. The outer surfaces of the semicircular ribs are inserted into the interior of the vertically adjacent semicircular grooves to improve the sealing of the connection between the bottom chamber, the connecting chamber, and the top chamber, and at the same time realize the connection of the vertical ventilation channels.

[0010] Furthermore, the ventilation mechanism also includes a molecular sieve, a return air pipe, and an arc-shaped return air pipe. The molecular sieve is respectively disposed on the inner wall of the horizontal air pipe, the vertical air pipe, and the air pipe. The interior of the connecting chamber is provided with uniformly distributed return air pipes. The middle part of each return air pipe is connected to the end of the radially adjacent horizontal air pipe away from the center of the connecting chamber. The two vertically adjacent return air pipes are interconnected. The interior of the upper and lower cavities is provided with four uniformly distributed arc-shaped return air pipes. The upper end of the upper cavity is provided with air chamber one, and the lower end of the lower cavity is provided with air chamber two. The upper ends of the four arc-shaped return air pipes on the upper side are connected to air chamber one, and the lower ends of the four arc-shaped return air pipes on the lower side are connected to air chamber two. The end of the arc-shaped return air pipe near the connecting chamber is connected to the corresponding end of the vertically adjacent return air pipe, so as to realize the return of gas when it reaches the bottom chamber.

[0011] Furthermore, a cooling fan is installed at the upper end of the first air chamber. The input end of the cooling fan is electrically connected to the output end of the control switch group. A protective cover is installed at the upper end of the top chamber. The center of the outer arc surface of the protective cover is provided with evenly distributed air holes. The upper end of the top chamber is provided with evenly distributed round holes to provide driving force for ventilation of the low temperature chamber.

[0012] Furthermore, PS extruded insulation boards are provided on the upper wall of the bottom compartment, the interior wall of the connecting compartment, and the lower wall of the top compartment near the vertical air pipe. Polyurethane insulation boards are provided on the outer arc surface of the PS extruded insulation boards away from the center of the connecting compartment. The middle part of the return air pipe and the end of the arc-shaped return air pipe near the connecting compartment are located between the polyurethane insulation board and the PS extruded insulation board, thereby improving the heat insulation, cooling, corrosion prevention, and moisture prevention performance of the low-temperature compartment.

[0013] Furthermore, the top hopper is equipped with a feed pipe at its upper end, and the bottom hopper is equipped with a discharge pipe at its lower end. The discharge pipe is equipped with an electric valve at its lower end. The input end of the electric valve is electrically connected to the output end of the control switch group, providing a channel for the grain to enter and exit, and controlling the grain discharge.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This low-temperature warehouse insulation, cooling, corrosion prevention and moisture-proof device has the following advantages:

[0015] While expanding the capacity of cryogenic chambers by stacking connecting chambers, the overlapping of return air pipes enables the ventilation mechanism to adapt to cryogenic chambers of different capacities, effectively achieving all-round ventilation for cryogenic chambers of different capacities and effectively improving the cooling, corrosion prevention and moisture-proof performance of cryogenic chambers. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the internal structure of this utility model;

[0018] Figure 3 This is an enlarged structural diagram of point A in this utility model;

[0019] Figure 4 This is a schematic diagram of the ventilation channel of this utility model;

[0020] Figure 5 This is a cross-sectional view of the upper side of the present invention;

[0021] Figure 6 This is a cross-sectional view of the connecting compartment of this utility model.

[0022] In the diagram: 1. Bottom compartment, 2. Connecting compartment, 3. Top compartment, 4. Ventilation mechanism, 41. Horizontal air pipe, 42. Vertical air pipe, 43. Air pipe, 44. Molecular sieve, 45. Return air pipe, 46. Arc-shaped return air pipe, 47. Connecting ring, 48. Annular groove, 5. Refrigeration fan, 6. Cavity, 7. Protective cover, 8. Electric valve, 9. Control box, 10. Control switch group, 11. PS extruded insulation board, 12. Polyurethane insulation board, 13. Semi-circular groove, 14. Semi-circular rib. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-6 This embodiment provides a technical solution: a low-temperature chamber heat insulation, cooling, corrosion prevention and moisture prevention device, including a bottom chamber 1 and a connecting chamber 2. The upper end of the bottom chamber 1 is connected to the lower end of the bottom connecting chamber 2 by a uniformly distributed bolt. The two vertically adjacent connecting chambers 2 are also threaded together by a uniformly distributed bolt. The upper end of the top connecting chamber 2 is also threaded together with the lower end of the top chamber 3 by a uniformly distributed bolt. A control box 9 is provided on the right side of the bottom chamber 1. The control box 9 is equipped with a control switch group 10. The input end of the control switch group 10 is electrically connected to an external power supply. It also includes a ventilation mechanism 4.

[0025] Ventilation mechanism 4 includes horizontal air pipes 41, vertical air pipes 42, and air pipes 43. The ends of the horizontal air pipes 41 furthest from the center of the connecting chamber 2 are connected to the inner walls of adjacent connecting chambers 2 via evenly distributed bolts. The ends of four adjacent horizontal air pipes 41 near the center of the connecting chamber 2 are connected to the middle of adjacent vertical air pipes 42. Cavities 6 are provided inside the lower end of the bottom chamber 1 and the upper end of the top chamber 3. Air pipes 43 are located at the center of the top wall of the top chamber 3 and the center of the bottom wall of the bottom chamber 1, and each air pipe 43 is connected to an adjacent vertical air pipe 42. Evenly distributed through holes are provided in the middle of the horizontal air pipes 41, vertical air pipes 42, and air pipes 43. Ventilation mechanism 4 also includes connecting rings 47 and annular grooves 48, with the annular grooves 48 respectively located in the vertical... Connecting rings 47 are inserted between the upper and lower ends of the air pipe 42 and the ends of the two air pipes 43 near the connecting chamber 2. Semicircular grooves 13 are provided on the right end of the upper surface of the bottom chamber 1, the left end of the lower surface of the top chamber 3, the right end of the upper surface of the connecting chamber 2, and the left end of the lower surface of the connecting chamber 2. Semicircular ribs 14 are fixedly connected to the left end of the upper surface of the bottom chamber 1, the right end of the lower surface of the top chamber 3, the left end of the upper surface of the connecting chamber 2, and the right end of the lower surface of the connecting chamber 2. The outer surface of the semicircular ribs 14 is inserted into the interior of the vertically adjacent semicircular grooves 13. The semicircular grooves 13 and semicircular ribs 14 located on the same plane have the same diameter and coincide in center. The ventilation mechanism 4 also includes a molecular sieve 44, a return air pipe 45, and an arc-shaped return air pipe. Pipes 46 and molecular sieves 44 are respectively installed on the inner walls of the transverse gas pipe 41, vertical gas pipe 42, and gas pipe 43. The molecular sieves 44 ensure smooth gas passage while preventing grain from entering the interior of the transverse gas pipe 41, vertical gas pipe 42, and gas pipe 43 through the through-holes. The interior of the connecting chamber 2 is equipped with evenly distributed return gas pipes 45. The middle of each return gas pipe 45 is connected to the radially adjacent end of the transverse gas pipe 41 furthest from the center of the connecting chamber 2. Two vertically adjacent return gas pipes 45 are interconnected. The interiors of the upper and lower cavities 6 are each equipped with four evenly distributed arc-shaped return gas pipes 46. The upper end of the upper cavity 6 is equipped with air chamber one, and the lower end of the lower cavity 6 is equipped with air chamber two. The upper ends of the four arc-shaped return gas pipes 46 on the upper side are connected to air chamber one, and the lower... The lower ends of the four arc-shaped return air pipes 46 on the side are all connected to the second air chamber. The end of the arc-shaped return air pipe 46 near the connecting chamber 2 is connected to the corresponding end of the vertically adjacent return air pipe 45. A cooling fan 5 is installed at the upper end of the first air chamber. The input end of the cooling fan 5 is electrically connected to the output end of the control switch group 10. A protective cover 7 is installed at the upper end of the top chamber 3. The middle part of the outer arc surface of the protective cover 7 is provided with evenly distributed air holes. The upper end of the top chamber 3 is provided with evenly distributed round holes. According to the required storage capacity, a corresponding number of connecting chambers 2 are selected. Then, the connecting chambers 2 are stacked inside the bottom chamber 1. Then, the top chamber 3 is stacked on top of the upper connecting chambers 2. Bolts are used to achieve a stable connection between two adjacent connecting chambers 2, connecting chambers 2 and bottom chamber 1 and connecting chambers 2 and top chamber 3.Simultaneously, the semi-circular ribs 14 are all inserted into the vertically adjacent semi-circular grooves 13, improving the sealing at the connection points of two adjacent connecting compartments 2, the connection point between connecting compartment 2 and bottom compartment 1, and the connection point between connecting compartment 2 and top compartment 3. At the same time, connecting rings 47 are inserted between two vertically adjacent annular grooves 48 to achieve a seal at the connection points of two adjacent vertical air pipes 42 and the connection point between vertical air pipe 42 and adjacent air pipe 43, preventing grain from entering the vertical air pipe 42 while ensuring gas passes through the upper air pipe 43 and the vertically adjacent vertical air pipes 43. The smooth flow of pipe 42 and the lower air pipe 43, along with the stacking of return air pipe 45 while connecting chamber 2 is stacked, ensures that the return channel meets the return requirements of low-temperature chambers of different capacities. Then, the low-temperature chamber consisting of bottom chamber 1, connecting chamber 2, and top chamber 3, along with other mechanisms, is stably placed in the horizontal working area. After stable placement, grain is injected into the low-temperature chamber through the feed pipe. During grain storage, the control switch group 10 activates the refrigeration fan 5. The refrigeration fan 5 processes external air at low temperature and introduces it into the interior of the air chamber 1. Then, the air flows sequentially through the upper air pipe 43, the adjacent vertical air pipe 42, and the lower air pipe 43. When the gas reaches the vertical air pipe 42, it enters the interior of the horizontal air pipe 41 and then exits through evenly distributed through-holes, introducing fresh air from outside into the cryogenic chamber. The horizontal air pipe 41, vertical air pipe 42, and air pipe 43 achieve all-round ventilation inside the cryogenic chamber. At the same time, the air inside the cryogenic chamber enters the interior of the horizontal air pipe 41 through the through-holes and then flows back into the return air pipe 45. Simultaneously, the vertical air... The flowing gas reaches the second air chamber, then flows upwards through the four lower arc-shaped return air pipes 45, merging with the gas flowing back inside the horizontal air pipe 41. The returning gas then flows back into the first air chamber through the four upper arc-shaped return air pipes 45, and is then discharged through the evenly distributed air holes of the protective cover 7. This achieves efficient gas exchange between the inside and outside of the low-temperature chamber 1, greatly improving its ventilation performance and drawing out moisture and dampness. Simultaneously, the flowing gas accelerates the evaporation of heat from the grain, providing a certain degree of cooling.

[0026] Specifically: PS extruded polystyrene insulation board 11 is installed on the upper wall of the bottom chamber 1, the interior wall of the connecting chamber 2, and the lower wall of the top chamber 3 near the vertical air pipe 42. Polyurethane insulation board 12 is installed on the outer arc surface of the PS extruded polystyrene insulation board 11 away from the center of the connecting chamber 2. (The upper wall of the bottom chamber 1, the interior wall of the connecting chamber 2, and the lower wall of the top chamber 3 form an installation cavity, with polyurethane insulation board 12 and PS extruded polystyrene insulation board 11 arranged sequentially from the outside to the inside. The installation cavity at the upper wall of the bottom chamber 1 is not connected to the cavity 6 of the bottom chamber 1, and the installation cavity at the lower wall of the top chamber 3 is not connected to the cavity 6 of the top chamber 3.) The middle part of the return air pipe 45 and the end of the arc-shaped return air pipe 46 near the connecting chamber 2 are located between the polyurethane insulation board 12 and the PS extruded polystyrene insulation board 11. The PS extruded polystyrene insulation board 11 is a… This rigid foam insulation material, made primarily of polystyrene resin through continuous extrusion foaming, possesses a fine and uniform surface and a closed-cell honeycomb structure. This gives it high compressive strength, lightweight properties, non-absorbency, air tightness, wear resistance, and degradation resistance. It also exhibits excellent thermal insulation performance, forming a vacuum layer to effectively inhibit heat conduction. While ensuring the structural strength of the low-temperature warehouse, it enhances the warehouse's thermal insulation, corrosion resistance, and moisture-proof performance. Furthermore, the polyurethane insulation board 12 features low thermal conductivity, excellent thermal insulation performance, moisture and water resistance, fire resistance, flame retardancy, high temperature resistance, strong deformation resistance, and long service life. It further enhances the thermal insulation and moisture-proof performance of the low-temperature warehouse while ensuring its structural strength, reducing the impact of external environmental factors on stored grains and thus improving the warehouse's corrosion resistance.

[0027] The top hopper 3 is equipped with a feed pipe at its upper end, and the bottom hopper 1 is equipped with a discharge pipe at its lower end. An electric valve 8 is installed at the lower end of the discharge pipe. The input end of the electric valve 8 is electrically connected to the output end of the control switch group 10. When grain needs to be discharged, the electric valve 8 is operated by the control switch group 10. The electric valve 8 is opened, and the grain is moved out from the discharge pipe.

[0028] The working principle of the low-temperature storage insulation, cooling, corrosion prevention, and moisture-proof device provided by this utility model is as follows: During operation, personnel select the corresponding number of connecting compartments 2 according to the required storage capacity, and then stack the connecting compartments 2 inside the bottom compartment 1. Then, the top compartment 3 is stacked on top of the upper connecting compartments 2. Bolts are used to achieve stable connections between adjacent connecting compartments 2, and between connecting compartments 2 and the bottom compartment 1 and connecting compartments 2 and the top compartment 3. Simultaneously, the semi-circular ribs 14 are inserted into the vertically adjacent semi-circular grooves 13, improving the sealing and horizontal tear resistance at the connection points between adjacent connecting compartments 2, between connecting compartments 2 and the bottom compartment 1, and between connecting compartments 2 and the top compartment 3. At the same time, connecting rings 47 are inserted between two vertically adjacent annular grooves 48 to connect two adjacent vertical air pipes 42. The sealing between the connections and between the vertical air pipes 42 and adjacent air pipes 43, as well as the enhancement of the horizontal force at the connections, prevent grain from entering the vertical air pipes 42. Simultaneously, it ensures the smooth flow of gas through the upper air pipe 43, the adjacent vertical air pipes 42, and the lower air pipe 43. While the connecting chambers 2 are stacked, the return air pipes 45 are also stacked, ensuring that the return channel meets the return requirements of low-temperature chambers of different capacities. Then, the low-temperature chamber consisting of the bottom chamber 1, connecting chamber 2, and top chamber 3, along with other mechanisms, are stably placed in the horizontal working area. After stable placement, personnel inject grain into the low-temperature chamber through the feed pipe. During grain storage, the control switch group 10 activates the refrigeration fan 5, which introduces chilled external air into the air chamber 1. Inside, the air flows sequentially through the upper air pipe 43, the adjacent vertical air pipe 42, and the lower air pipe 43. When the gas reaches the vertical air pipe 42, it enters the interior of the horizontal air pipe 41 and then exits through evenly distributed through-holes (the diameter of the through-holes is smaller than the size of the grain), introducing fresh air from outside into the low-temperature chamber. The horizontal air pipe 41, vertical air pipe 42, and air pipe 43 achieve all-round ventilation inside the low-temperature chamber. At the same time, the air inside the low-temperature chamber enters the interior of the horizontal air pipe 41 through the through-holes and then flows back into the interior of the return air pipe 45. Simultaneously, the vertically flowing gas reaches the second air chamber and then flows upward through the four lower arc-shaped return air pipes 45, merging with the gas flowing back into the horizontal air pipe 41. The returning gas then flows through the upper... The four arc-shaped return air pipes 45 return the air to the interior of the air chamber 1, and then discharge it through the evenly distributed air holes of the protective cover 7, realizing efficient exchange of gases inside and outside the low-temperature chamber 1, greatly improving the ventilation performance of the low-temperature chamber, drawing out the moisture and dampness inside the low-temperature chamber, and at the same time accelerating the evaporation of heat from the grain with the flowing gas, thus playing a certain role in cooling. The PS extruded insulation board 11 is a rigid foam insulation material made of polystyrene resin as the main raw material and formed by continuous extrusion foaming. It has a fine and uniform surface and a closed-cell honeycomb structure, giving it high compressive strength, lightweight properties, non-absorbency, air impermeability, wear resistance, and degradation resistance. At the same time, it has excellent thermal insulation performance and can form a vacuum layer to effectively inhibit heat conduction, ensuring the supporting strength of the low-temperature chamber.To improve the thermal insulation, corrosion resistance, and moisture-proof performance of the low-temperature storage warehouse, polyurethane insulation board 12 is used. This board possesses characteristics such as low thermal conductivity, excellent thermal insulation performance, moisture and water resistance, fire resistance, flame retardancy, high temperature resistance, strong deformation resistance, and long service life. While ensuring the structural strength of the low-temperature storage warehouse, it further enhances its thermal insulation and moisture-proof performance, reducing the impact of external environmental factors on the stored grain and thus improving the warehouse's corrosion resistance. When grain discharge is required, the electric valve 8 is activated via the control switch group 10, opening the valve and allowing the grain to be discharged from the discharge pipe.

[0029] It is worth noting that the refrigeration fan 5 disclosed in the above embodiments can be a DL-15 type air cooler, and the control switch group 10 is provided with control buttons that correspond one-to-one with the refrigeration fan 5 and the electric valve 8 and control their switching.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A low-temperature chamber insulation, cooling, corrosion prevention, and moisture-proof device, comprising a bottom chamber (1) and a connecting chamber (2), wherein the upper end of the bottom chamber (1) is connected to the lower end of the lowest connecting chamber (2) by uniformly distributed bolts, and two vertically adjacent connecting chambers (2) are also threadedly connected by uniformly distributed bolts, and the upper end of the uppermost connecting chamber (2) is also threadedly connected to the lower end of the top chamber (3) by uniformly distributed bolts, characterized in that: It also includes ventilation mechanisms (4); Ventilation mechanism (4): It includes a horizontal air pipe (41), a vertical air pipe (42) and an air pipe (43). The end of the horizontal air pipe (41) away from the center of the connecting chamber (2) is connected to the inner wall of the adjacent connecting chamber (2) by a uniformly distributed bolt. The end of the four horizontally adjacent air pipes (41) near the center of the connecting chamber (2) is connected to the middle of the adjacent vertical air pipe (42). The lower end of the bottom chamber (1) and the upper end of the top chamber (3) are provided with cavities (6). The center of the top wall of the top chamber (3) and the center of the bottom wall of the bottom chamber (1) are provided with air pipes (43). The air pipes (43) are connected to the vertically adjacent vertical air pipes (42). The middle of the horizontal air pipe (41), the vertical air pipe (42) and the air pipe (43) are provided with uniformly distributed through holes.

2. The low-temperature warehouse insulation, cooling, corrosion prevention, and moisture-proof device according to claim 1, characterized in that: A control box (9) is provided on the right side of the bottom compartment (1). A control switch group (10) is provided inside the control box (9). The input terminal of the control switch group (10) is electrically connected to an external power source.

3. The low-temperature warehouse insulation, cooling, corrosion prevention, and moisture-proof device according to claim 1, characterized in that: The ventilation mechanism (4) also includes a connecting ring (47) and an annular groove (48). The annular groove (48) is respectively set at the upper and lower ends of the vertical air pipe (42) and at the end of the two air pipes (43) near the connecting chamber (2). A connecting ring (47) is inserted between two vertically adjacent annular grooves (48). A semi-circular groove (13) is set at the right end of the upper surface of the bottom chamber (1), the left end of the lower surface of the top chamber (3), the right end of the upper surface of the connecting chamber (2), and the left end of the lower surface of the connecting chamber (2). A semi-circular rib (14) is fixedly connected to the left end of the upper surface of the bottom chamber (1), the right end of the lower surface of the top chamber (3), the left end of the upper surface of the connecting chamber (2), and the right end of the lower surface of the connecting chamber (2). The outer surface of the semi-circular rib (14) is inserted into the interior of the vertically adjacent semi-circular groove (13).

4. The low-temperature warehouse insulation, cooling, corrosion prevention, and moisture-proof device according to claim 2, characterized in that: The ventilation mechanism (4) further includes a molecular sieve (44), a return air pipe (45), and an arc-shaped return air pipe (46). The molecular sieve (44) is respectively disposed on the inner wall of the horizontal air pipe (41), the vertical air pipe (42), and the air pipe (43). The interior of the connecting chamber (2) is provided with uniformly distributed return air pipes (45). The middle part of each return air pipe (45) is connected to the end of the radially adjacent horizontal air pipe (41) away from the center of the connecting chamber (2). The two vertically adjacent return air pipes (45) are mutually... The upper and lower cavities (6) are connected, and four evenly distributed arc-shaped return air pipes (46) are provided inside each cavity. The upper cavity (6) has a first air chamber at the top and a second air chamber at the bottom. The upper ends of the four arc-shaped return air pipes (46) on the upper side are connected to the first air chamber, and the lower ends of the four arc-shaped return air pipes (46) on the lower side are connected to the second air chamber. The end of the arc-shaped return air pipe (46) near the connecting chamber (2) is connected to the corresponding end of the vertically adjacent return air pipe (45).

5. The low-temperature warehouse insulation, cooling, corrosion prevention, and moisture-proof device according to claim 4, characterized in that: A cooling fan (5) is provided at the upper end of the air chamber 1. The input end of the cooling fan (5) is electrically connected to the output end of the control switch group (10). A protective cover (7) is provided at the upper end of the top chamber (3). A uniformly distributed air hole is provided in the middle of the outer arc surface of the protective cover (7). A uniformly distributed round hole is provided at the upper end of the top chamber (3).

6. The low-temperature warehouse insulation, cooling, corrosion prevention, and moisture-proof device according to claim 4, characterized in that: PS extruded insulation board (11) is provided on the upper end of the wall of the bottom chamber (1), the inside of the wall of the connecting chamber (2), and the lower end of the wall of the top chamber (3) near the vertical air pipe (42). Polyurethane insulation board (12) is provided on the outer arc surface of the PS extruded insulation board (11) away from the center of the connecting chamber (2). The middle part of the return air pipe (45) and the end of the arc-shaped return air pipe (46) near the connecting chamber (2) are located between the polyurethane insulation board (12) and the PS extruded insulation board (11).

7. The low-temperature warehouse insulation, cooling, corrosion prevention, and moisture-proof device according to claim 2, characterized in that: The top chamber (3) is provided with a feed pipe at its upper end, and the bottom chamber (1) is provided with a discharge pipe at its lower end. An electric valve (8) is provided at the lower end of the discharge pipe. The input end of the electric valve (8) is electrically connected to the output end of the control switch group (10).

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