Ventilation device and ventilation method for wet rice warehouse

By designing open boxes, windshields, rotary rods, rubber capsules and other components in the wet rice storage warehousing, the problems of low ventilation efficiency and difficulty in sealing are solved, and more efficient ventilation and humidity control are achieved.

CN119156983AInactive Publication Date: 2024-12-20GAOAN RUIQIAN RICE IND CO LTD
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Patent Information

Application Number
CN202411229375.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-03
Publication Date
2024-12-20
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The ventilation device of the existing wet rice storage silo is inefficient in ventilation and cannot be effectively sealed, causing external air to enter the storage silo and increase humidity.

Method used

A ventilation device including an open box, a windshield plate, a rotary rod, a transverse plate, a fan blade, a rubber capsule and an intake pipe was designed. By starting the hair dryer, the windshield is used to increase the wind force, and the fan blade is rotated. and rubber capsules to seal the gaps, and staff can push the shutters and connecting plates to seal them.

Benefits of technology

It improves the air volume and ventilation efficiency in the wet rice storage warehousing, and effectively prevents external gas from entering, reducing the humidity in the storage warehousing.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of ventilation for wet rice storage bins, and discloses a ventilation device and a ventilation method for a wet rice storage bin. Comprising a wet rice storage bin, machine boxes are fixedly connected to the front surface and the rear surface of the wet rice storage bin, the machine boxes communicate with the wet rice storage bin, and air blowers are fixedly connected to the interiors of the machine boxes. According to the air blower, the opening box is arranged in the air blower, part of air blown out by the air blower can enter the opening box, the air baffle can block the air blown out by the air blower, the resistance of the air of the air blower can be increased, and the rotating rod can rotate under the influence of the opening box and the air baffle, and when the rotating rod rotates, the transverse plate can drive the fixing rod and the fan blades to rotate; the fan blades can ventilate the upper portion of the wet rice storage bin, the air blowers can ventilate the two sides of the wet rice storage bin, and the fan blades are matched with the air blowers so that the air volume in the wet rice storage bin can be increased.
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Description

Technical Field

[0001] The invention relates to the technical field of ventilation for wet rice storage bins, and in particular to a ventilation device and a ventilation method for wet rice storage bins. Background Art

[0002] Special buildings for storing grain. Mainly including warehouses, cargo yards (or drying yards) and facilities for metering, transportation, stacking, cleaning, loading and unloading, ventilation, drying, etc. and equipped with instruments for measuring, sampling, inspection and testing. Special buildings for storing grain. Since the moisture content of harvested rice is too high, it is very difficult to store. If it is not dried in time, the rice will become moldy. Therefore, ventilation devices are needed to ventilate and dry the grain in the wet rice storage bin;

[0003] When the ventilation device for the wet rice storage bin is in use, a hair dryer is usually used to ventilate the wet rice storage bin, which results in insufficient ventilation of the wet rice storage bin, affecting the ventilation effect of the grain in the wet rice storage bin. At the same time, when the ventilation device for the wet rice storage bin is in use, the ventilation device cannot be blocked, resulting in outside air easily entering the interior of the wet rice storage bin, increasing the humidity in the wet rice storage bin. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a ventilation device and a ventilation method for a wet rice storage bin, wherein a hair dryer is started to blow wind into the interior of the wet rice storage bin, and a portion of the wind blown out by the hair dryer is allowed to enter the interior of the open box by utilizing the opening on the side surface of the open box, and a wind shield plate is used to block the wind blown out by the hair dryer, so that the wind resistance of the hair dryer can be increased, and a rotating rod can be rotated by utilizing the influence of the open box and the wind shield plate, and when the rotating rod is rotating, the cross plate can drive the fixed rod and the fan blades to rotate, so that the fan blades can ventilate the upper part of the wet rice storage bin, and the blowing wind The machine can ventilate both sides of the wet rice storage bin, so that the fan blades cooperate with the hair dryer to increase the air volume in the wet rice storage bin. When the wet rice storage bin is ventilated, the staff can hold the handshake to push the connecting plate upwards, and when the connecting plate moves, it can drive the shield plate to move, so that the shield plate can utilize the sliding of the slider and the slide plate to move the shield plate to the surface of the machine box to fit and correspond, and the connecting plate can be fixed by screwing the bolts, so that the wet rice storage bin 1 can be fully sealed when it is not ventilated, etc., which solves the problems of low ventilation efficiency and inconvenient sealing of the ventilation device.

[0006] (II) Technical solution

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising a wet rice storage bin, wherein the front surface and the rear surface of the wet rice storage bin are both fixedly connected with an organic box, and the organic box is communicated with the wet rice storage bin, and the interior of the organic box is fixedly connected with a hair dryer;

[0008] The inner top wall of the wet rice storage bin is movably connected to a rotating rod through a bearing, and cross plates are fixedly connected on both sides of the rotating rod. The side surface of the cross plate is fixedly connected to a wind shield plate, and the side surface of the wind shield plate is fixedly connected to an open box. The lower surface of the cross plate is fixedly connected to a fixed rod, and the side surface of the fixed rod is surrounded by fan blades.

[0009] Preferably, a dustproof net is fixedly connected to the front surface of the machine box, and slide plates are fixedly connected to both sides of the machine box.

[0010] Preferably, the front surface of the skateboard is slidably connected to a slider, the front surface of the slider is fixedly connected to a shield plate, the lower surface of the shield plate is fixedly connected to a connecting plate, and the lower surface of the connecting plate is fixedly connected to a handshake.

[0011] Preferably, the internal thread of the connecting plate is connected with a bolt, and the bolt is threadedly connected to the wet rice storage bin.

[0012] Preferably, the inner wall of the wet rice storage bin is provided with a rubber bag, and the side surface of the rubber bag is provided with a rubber pad.

[0013] Preferably, an air intake pipe is fixedly connected to the side surface of the rubber bag, an end of the air intake pipe away from the rubber bag is fixedly connected to a chimeric tube, and a plug is chimerically connected inside the chimeric tube.

[0014] Preferably, a first metal plate is fixedly connected to both sides of the plug, a connecting rod is fixedly connected to the rear surface of the first metal plate, and a second metal plate is fixedly connected to both sides of the mosaic tube, and the second metal plate is mosaic-connected to the connecting rod.

[0015] Preferably, a side surface of the wet rice storage bin is movably connected to a bin door via a shaft rod, and a handle is fixedly connected to the side surface of the bin door.

[0016] Preferably, a clamping plate is fixedly connected to the front surface of the bin door, a threaded rod is threadedly connected to the inner thread of the clamping plate, and the threaded rod is threadedly connected to the wet rice storage bin, and a rotating plate is fixedly connected to one end of the threaded rod away from the wet rice storage bin.

[0017] A ventilation method for a wet rice storage bin comprises the following steps:

[0018] S1, connecting the hair dryer to an external power source, starting the hair dryer to blow air into the wet rice storage bin, using the opening on the side surface of the open box so that part of the wind from the hair dryer can enter the inside of the open box, and using the wind shield to generate resistance to the wind from the hair dryer, so that the rotating rod can be rotated by the influence of the open box and the wind shield, and when the rotating rod is rotating, the cross plate can drive the fixed rod and the fan blade to rotate, so that the fan blade cooperates with the hair dryer to increase the air volume in the wet rice storage bin;

[0019] S2. When the warehouse door and the wet rice storage bin are combined, the air inlet pipe is used to input the outside air into the rubber bag, so that the rubber bag can expand. When the rubber bag expands, the rubber bag can drive the rubber pad to seal the gap between the warehouse door and the wet rice storage bin, thereby preventing the outside air from entering the wet rice storage bin and increasing the moisture in the wet rice storage bin;

[0020] S3. When the wet rice storage bin is ventilated, the staff can hold the handle to push the shield upward to fit the surface of the machine box, and tighten the bolts to fix the connecting plate, so that the wet rice storage bin can be fully closed when it is not ventilated.

[0021] Compared with the prior art, the present invention provides a ventilation device and a ventilation method for a wet rice storage bin, which have the following beneficial effects:

[0022] 1. The present invention starts the hair dryer so that it can blow wind into the interior of the wet rice storage bin, and utilizes the opening on the side surface of the open box so that part of the wind blown out by the hair dryer can enter the interior of the open box, and the wind shield can block the wind blown out by the hair dryer, so that it can increase the wind resistance of the hair dryer, and the rotating rod can rotate by utilizing the influence of the open box and the wind shield. When the rotating rod rotates, the cross plate can drive the fixed rod and the fan blades to rotate, so that the fan blades can ventilate the top of the wet rice storage bin, and the hair dryer can ventilate both sides of the wet rice storage bin, so that the fan blades cooperate with the hair dryer to increase the air volume in the wet rice storage bin.

[0023] 2. In the present invention, after the wet rice storage bin is ventilated, the staff can hold the handshake to push the connecting plate upwards. When the connecting plate moves, it can drive the shield plate to move, so that the shield plate can utilize the sliding of the slider and the slide plate to move the shield plate to the surface of the machine box to fit and correspond. The connecting plate can be fixed by screwing the bolts, so that the wet rice storage bin 1 can be fully closed when it is not ventilated.

[0024] 3. The present invention utilizes an air intake pipe to input external air into the interior of the rubber bag, so that the rubber bag can expand, and the plug is embedded in the interior of the embedded pipe to block the air intake pipe. When the plug is connected to the embedded pipe, the connecting rod can penetrate the interior of the second metal plate, so that the plug is more firmly connected to the embedded pipe. When the rubber bag expands, the rubber bag can drive the rubber pad to seal the gap between the warehouse door and the wet rice storage bin, thereby preventing external air from entering the interior of the wet rice storage bin and increasing the moisture in the wet rice storage bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the shield structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the internal structure of the wet rice storage bin of the present invention from a side view;

[0028] Figure 4 for Figure 3 Schematic diagram of the structure at A in the middle;

[0029] Figure 5 It is a schematic diagram of the rotating rod structure of the present invention;

[0030] Figure 6 It is a schematic diagram of the card board structure of the present invention.

[0031] Among them: 1. wet rice storage bin; 2. baffle; 3. machine box; 4. bin door; 5. handle; 6. card plate; 7. plug; 8. threaded rod; 9. rotating plate; 10. rubber bag; 11. rubber pad; 12. air inlet pipe; 13. second metal plate; 14. connecting rod; 15. mosaic tube; 16. first metal plate; 17. open box; 18. fixing rod; 19. fan blade; 20. wind deflector; 21. rotating rod; 22. horizontal plate; 23. handshake; 24. bolt; 25. connecting plate; 26. slider; 27. hair dryer; 28. skateboard. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1:

[0034] See also Figure 1-6A ventilation device for a wet rice storage bin comprises a wet rice storage bin 1, the front surface and the rear surface of the wet rice storage bin 1 are fixedly connected with an organic box 3, and the organic box 3 is communicated with the wet rice storage bin 1, a blower 27 is fixedly connected inside the organic box 3, a rotating rod 21 is movably connected to the inner top wall of the wet rice storage bin 1 through a bearing, a transverse plate 22 is fixedly connected to both sides of the rotating rod 21, a wind shield 20 is fixedly connected to the side surface of the transverse plate 22, an open box 17 is fixedly connected to the side surface of the wind shield 20, a fixed rod 18 is fixedly connected to the lower surface of the transverse plate 22, and a fan blade 19 surrounds the side surface of the fixed rod 18. When the device is ventilated, the blower 27 is connected to an external power supply to start the blowing. The fan 27 can blow wind into the interior of the wet rice storage bin 1. By utilizing the opening on the side surface of the open box 17, part of the wind blown out by the blower 27 can enter the interior of the open box 17. The wind shield 20 can block the wind blown out by the blower 27, so that it can increase the wind resistance of the blower 27. The rotating rod 21 can rotate by utilizing the influence of the open box 17 and the wind shield 20. When the rotating rod 21 rotates, the cross plate 22 can drive the fixed rod 18 and the fan blades 19 to rotate, so that the fan blades 19 can ventilate the top of the wet rice storage bin 1, and the blower 27 can ventilate both sides of the wet rice storage bin 1, so that the fan blades 19 cooperate with the blower 27 to increase the air volume in the wet rice storage bin 1.

[0035] A dustproof net is fixedly connected to the front surface of the machine box 3, and the dustproof net makes it convenient for the hair dryer 27 to extract external air. Slide plates 28 are fixedly connected to both sides of the machine box 3. A slider 26 is slidably connected to the front surface of the slider 28. A shield plate 2 is fixedly connected to the front surface of the slider 26. A connecting plate 25 is fixedly connected to the lower surface of the shield plate 2. A handshake 23 is fixedly connected to the lower surface of the connecting plate 25. The internal thread of the connecting plate 25 is connected to a bolt 24, and the bolt 24 is threadedly connected to the wet rice storage bin 1. When the wet rice storage bin 1 is ventilated, the staff can hold the handshake 23 to push the connecting plate 25 upwards. When the connecting plate 25 moves, the shield plate 2 can be driven to move, so that the shield plate 2 can be moved to the surface of the machine box 3 to fit correspondingly by sliding the slider 26 and the slide plate 28. The connecting plate 25 can be fixed by screwing the bolt 24, so that the wet rice storage bin 1 can be fully closed when it is not ventilated.

[0036] The inner wall of the wet rice storage bin 1 is provided with a rubber bag 10, and the side surface of the rubber bag 10 is provided with a rubber pad 11. The side surface of the rubber bag 10 is fixedly connected with an air inlet pipe 12, and the end of the air inlet pipe 12 away from the rubber bag 10 is fixedly connected with a chimeric pipe 15, and the inside of the chimeric pipe 15 is chimerically connected with a plug 7, and both sides of the plug 7 are fixedly connected with a first metal plate 16, and the rear surface of the first metal plate 16 is fixedly connected with a connecting rod 14, and both sides of the chimeric pipe 15 are fixedly connected with a second metal plate 13, and the second metal plate 13 is chimerically connected with the connecting rod 14, and the activity of the bin door 4 is utilized to make it possible to connect with the wet rice storage bin. 1, the outside air is input into the rubber bag 10 by the air inlet pipe 12, so that the rubber bag 10 can expand, and the plug 7 is embedded in the embedded pipe 15 to block the air inlet pipe 12. When the plug 7 is connected to the embedded pipe 15, the connecting rod 14 can penetrate the inside of the second metal plate 13, so that the plug 7 is more firmly connected to the embedded pipe 15. When the rubber bag 10 expands, the rubber bag 10 can drive the rubber pad 11 to seal the gap between the warehouse door 4 and the wet rice storage bin 1, so as to prevent the outside air from entering the inside of the wet rice storage bin 1 and increasing the moisture in the wet rice storage bin 1.

[0037] The side surface of the wet rice storage bin 1 is movably connected with a bin door 4 through an axle rod, and a handle 5 is fixedly connected to the side surface of the bin door 4, and a clamping plate 6 is fixedly connected to the front surface of the bin door 4. The internal thread of the clamping plate 6 is connected with a threaded rod 8, and the threaded rod 8 is threadedly connected to the wet rice storage bin 1, and a rotating plate 9 is fixedly connected to one end of the threaded rod 8 away from the wet rice storage bin 1. When the bin door 4 is combined with the wet rice storage bin 1, the bin door 4 can drive the clamping plate 6 to move, so that the clamping plate 6 can fit with the rear surface of the wet rice storage bin 1, and the rotating plate 9 is rotated to drive the threaded rod 8 to rotate, and the threaded rod 8 can be continuously rotated to be threadedly connected with the rear surface of the wet rice storage bin 1 to fix the bin door 4.

[0038] Embodiment 2:

[0039] A ventilation method for a wet rice storage bin comprises the following steps:

[0040] S1, connect the hair dryer 27 to the external power supply, start the hair dryer 27 to blow air into the wet rice storage bin 1, use the opening on the side surface of the open box 17 to allow part of the wind from the hair dryer 27 to enter the inside of the open box 17, and use the wind shield 20 to generate resistance to the wind from the hair dryer 27, so that the rotating rod 21 can rotate using the influence of the open box 17 and the wind shield 20, when the rotating rod 21 is rotating, the cross plate 22 can drive the fixed rod 18 and the fan blade 19 to rotate, so that the fan blade 19 cooperates with the hair dryer 27 to increase the air volume in the wet rice storage bin 1;

[0041] S2, when the door 4 and the wet rice storage bin 1 are combined, the air inlet pipe 12 is used to input the outside air into the rubber bag 10, so that the rubber bag 10 can expand. When the rubber bag 10 expands, the rubber bag 10 can drive the rubber pad 11 to seal the gap between the door 4 and the wet rice storage bin 1, so as to prevent the outside air from entering the wet rice storage bin 1 and increasing the moisture in the wet rice storage bin 1;

[0042] S3. When the wet rice storage bin 1 is ventilated, the staff can hold the handle 23 to push the shield 2 upward to fit the surface of the machine box 3, and screw the bolt 24 to fix the connecting plate 25, so that the wet rice storage bin 1 can be fully closed when it is not ventilated.

[0043] When in use, start the hair dryer 27 so that it can blow wind into the interior of the wet rice storage bin 1, utilize the opening on the side surface of the open box 17 so that part of the wind blown out by the hair dryer 27 can enter the interior of the open box 17, and the wind shield 20 can block the wind blown out by the hair dryer 27, so that it can increase the wind resistance of the hair dryer 27, and the rotating rod 21 can rotate by utilizing the influence of the open box 17 and the wind shield 20. When the rotating rod 21 is rotating, the cross plate 22 can drive the fixed rod 18 and the fan blade 19 to rotate, so that the fan blade 19 can ventilate the top of the wet rice storage bin 1, and the hair dryer 27 can ventilate both sides of the wet rice storage bin 1. When the wet rice storage bin 1 is ventilated, the warehouse door 4 can be combined with the wet rice storage bin, and the warehouse door 4 can drive the card plate 6 to move so that the card plate 6 can fit with the rear surface of the wet rice storage bin 1. The rotating plate 9 is rotated so that it can drive the threaded rod 8 to rotate, and the threaded rod 8 can be continuously rotated to fit with the threaded rod 8 on the rear surface of the wet rice storage bin 1. The connection is used to fix the warehouse door 4, and the external air is input into the rubber bag 10 by using the air inlet pipe 12, so that the rubber bag 10 can expand, and the plug 7 is embedded in the embedded tube 15 to block the air inlet pipe 12. When the plug 7 is connected to the embedded tube 15, the connecting rod 14 can penetrate the inside of the second metal plate 13, so that the plug 7 is more firmly connected to the embedded tube 15. When the rubber bag 10 expands, the rubber bag 10 can drive the rubber pad 11 to seal the gap between the warehouse door 4 and the wet rice storage bin 1. The staff can hold the handshake 23 to push the connecting plate 25 upward. When the connecting plate 25 moves, it can drive the baffle 2 to move, so that the baffle 2 can use the sliding block 26 and the sliding plate 28 to slide the baffle 2 to move the baffle 2 to the surface of the machine box 3 to fit accordingly. The bolt 24 can be turned to fix the connecting plate 25, so that the wet rice storage bin 1 can be fully closed when it is not ventilated.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ventilation device for a wet rice storage bin, comprising a wet rice storage bin (1), Features: The front surface and the rear surface of the wet rice storage bin (1) are both fixedly connected to an engine box (3), and the engine box (3) is in communication with the wet rice storage bin (1), and a hair dryer (27) is fixedly connected inside the engine box (3); The inner top wall of the wet rice storage bin (1) is movably connected to a rotating rod (21) via a bearing, and both sides of the rotating rod (21) are fixedly connected to horizontal plates (22), and the side surface of the horizontal plate (22) is fixedly connected to a windshield (20), and the side surface of the windshield (20) is fixedly connected to an open box (17), and the lower surface of the horizontal plate (22) is fixedly connected to a fixed rod (18), and the side surface of the fixed rod (18) is surrounded by fan blades (19).

2. A ventilation device for wet rice storage bin according to claim 1, Features: A dustproof net is fixedly connected to the front surface of the machine box (3), and slide plates (28) are fixedly connected to both sides of the machine box (3).

3. A ventilation device for wet rice storage bin according to claim 2, Features: The front surface of the slide plate (28) is slidably connected to a slider (26), the front surface of the slider (26) is fixedly connected to a shield plate (2), the lower surface of the shield plate (2) is fixedly connected to a connecting plate (25), and the lower surface of the connecting plate (25) is fixedly connected to a handshake (23).

4. A ventilation device for wet rice storage bin according to claim 3, Features: The inner thread of the connecting plate (25) is connected with a bolt (24), and the bolt (24) is threadedly connected to the wet rice storage bin (1).

5. A ventilation device for wet rice storage bin according to claim 1, Features: The inner wall of the wet rice storage bin (1) is provided with a rubber bag (10), and the side surface of the rubber bag (10) is provided with a rubber pad (11).

6. A ventilation device for wet rice storage bin according to claim 5, Features: An air intake pipe (12) is fixedly connected to the side surface of the rubber bag (10), an end of the air intake pipe (12) away from the rubber bag (10) is fixedly connected to a chimeric pipe (15), and a plug (7) is chimerically connected inside the chimeric pipe (15).

7. A ventilation device for wet rice storage bin according to claim 6, Features: The plug (7) is fixedly connected to a first metal plate (16) on both sides, a connecting rod (14) is fixedly connected to the rear surface of the first metal plate (16), and the chimeric tube (15) is fixedly connected to a second metal plate (13) on both sides, and the second metal plate (13) is chimerically connected to the connecting rod (14).

8. A ventilation device for wet rice storage bin according to claim 1, Features: The side surface of the wet rice storage bin (1) is movably connected to a bin door (4) via a shaft rod, and the side surface of the bin door (4) is fixedly connected to a handle (5).

9. A ventilation device for wet rice storage bin according to claim 8, Features: A clamping plate (6) is fixedly connected to the front surface of the bin door (4), a threaded rod (8) is internally threadedly connected to the clamping plate (6), and the threaded rod (8) is threadedly connected to the wet rice storage bin (1), and a rotating plate (9) is fixedly connected to one end of the threaded rod (8) away from the wet rice storage bin (1).

10. A ventilation method for a wet rice storage bin according to any one of claims 1 to 9, It is characterized in that The following steps are involved: S1, connecting the hair dryer (27) to an external power source, starting the hair dryer (27) to blow air into the wet rice storage bin (1), utilizing the opening of the side surface of the open box (17) so that part of the wind from the hair dryer (27) can enter the inside of the open box (17), and utilizing the wind shield (20) to generate resistance to the wind of the hair dryer (27), so that the rotating rod (21) can be rotated by utilizing the influence of the open box (17) and the wind shield (20), and when the rotating rod (21) is rotating, the cross plate (22) can drive the fixed rod (18) and the fan blade (19) to rotate, so that the fan blade (19) cooperates with the hair dryer (27) to increase the air volume in the wet rice storage bin (1); S2, when the warehouse door (4) is combined with the wet rice storage bin (1), external air is input into the rubber bag (10) by using the air inlet pipe (12), so that the rubber bag (10) can expand. When the rubber bag (10) expands, the rubber bag (10) can drive the rubber pad (11) to seal the gap between the warehouse door (4) and the wet rice storage bin (1), thereby preventing external air from entering the wet rice storage bin (1) and increasing the moisture in the wet rice storage bin (1); S3. When the wet rice storage bin (1) is ventilated, the staff can hold the handle (23) to push the shield (2) upwards to fit the surface of the machine box (3), and screw the bolt (24) to fix the connecting plate (25), so that the wet rice storage bin (1) can be fully closed when the wet rice storage bin (1) is not ventilated.