Low-temperature granary and ventilation method thereof

Abstract

The invention belongs to the technical field of storage buildings, and particularly relates to a low-temperature grain storage barn and a ventilation method thereof. The end part of the bin body is fixedly connected with a plurality of groups of supporting columns; the bottom of the supporting column is fixedly connected with a foundation; the inner side wall of the bin body is fixedly connected with a pair of fixing frames; a ventilation pipe is fixedly connected to the middle of the fixing frame; one end of the ventilation pipe penetrates through the side wall of the bin body; the air box is fixedly connected to the end of the ventilation pipe, and then the air is filtered by the air filter, enters the air box and is conveyed into the bin body through the ventilation pipe, so that the air is conveyed to all places in the bin body through the ventilation pipe, moisture and temperature in the bin body are taken away through air flowing, and heat is discharged from the top of the bin body. By improving the air flowability in the granary body, the temperature in the granary body is effectively reduced, and meanwhile, the moisture of the grains is taken away, so that the storage time of the grains is prolonged, and the problems that the quality and nutritional value of the grains are reduced, and mildew and germination occur are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of storage buildings, in particular to a low-temperature grain storage bin and a ventilation method thereof. Background Art

[0002] Grain is the foundation of the country, and the country stores a large amount of grain every year. In recent years, my country has promoted food conservation actions, promoted green grain storage technology, achieved performance upgrades in grain storage functions, and further improved the quality and freshness levels.

[0003] In the current existing technology, low-temperature warehouses are important facilities for maintaining the freshness and quality of grain. By controlling the temperature and humidity inside the warehouse, the freshness and taste of grain can be maintained for a long period of time, thereby increasing storage time and nutritional value.

[0004] After the grain is stored in the silo, the newly harvested, unripe, sprouted, and high-moisture grains have a high respiration intensity and generate more heat through respiration, which leads to a higher temperature inside the silo, thereby increasing the activity of microorganisms in the grain, thereby accelerating the metabolism of the grain, causing the quality and nutritional value of the grain to decline, and causing problems such as mildew and sprouting. Therefore, in order to solve the above problems, a low-temperature grain storage silo and a ventilation method thereof are proposed. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background technology, the present invention proposes a low-temperature grain storage bin and a ventilation method thereof.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a low-temperature grain storage silo and its ventilation method described in the present invention include a silo body; a plurality of groups of support columns are fixedly connected to the end of the silo body; the bottom of the support column is fixedly connected to the foundation; a pair of fixing frames are fixedly connected to the inner wall of the silo body; a ventilation pipe is fixedly connected to the middle of the fixing frame; one end of the ventilation pipe passes through the side wall of the silo body; a bellows is fixedly connected to the end of the ventilation pipe; a first fixing plate is fixedly connected to the inner wall of the bellows; two pairs of threaded rods are fixedly connected to the side wall of the first fixing plate; an air filter is detachably installed on the side wall of the first fixing plate; a pressure block is sleeved on the middle of the threaded rod; a fan is fixedly connected to the inner wall of the bellows; a mask is detachably installed on the side wall of the bellows.

[0007] Preferably, the side wall of the bellows is provided with a first filter hole; the inner wall of the bellows is fixedly connected to a first sealing block; the inner wall of the first sealing block is slidably connected to an activated carbon filter; the side wall of the bellows is fixedly connected to a plurality of groups of studs; the side walls of the studs are threadedly connected to nuts; the side wall of the activated carbon filter is fixedly connected to a first handle; and the side wall of the activated carbon filter is provided with two pairs of fixing holes.

[0008] Preferably, a second filter hole is opened on the side wall of the bellows; a second sealing block is fixedly connected to the inner wall of the bellows; a sodium hydroxide filter is slidably connected to the inner wall of the second sealing block; and a second handle is fixedly connected to the side wall of the sodium hydroxide filter.

[0009] Preferably, a second fixing plate is fixedly connected to the inner wall of the bellows; a plurality of through holes are provided in the middle of the second fixing plate; a semiconductor refrigeration plate is fixedly connected to the top of the second fixing plate; and the semiconductor refrigeration plate is arranged in an array.

[0010] Preferably, a stop bar is fixedly connected to the inner wall of the bellows; a filter frame is threadedly connected to the inner wall of the bellows; and a gauze is fixedly connected to the middle of the filter frame.

[0011] Preferably, the side wall of the bellows is provided with an inspection hole; and a transparent sealing plate is detachably installed on the side wall of the bellows.

[0012] Preferably, a first sealing gasket is fixedly connected to the side wall of the bellows; and a second sealing gasket is fixedly connected to the side wall of the first fixing plate.

[0013] A ventilation method for a low-temperature grain storage bin, characterized in that the method is applicable to a low-temperature grain storage bin in claim 1, comprising the following steps:

[0014] S1: remove impurities from the grain and transport it to the interior of the silo through a conveying device;

[0015] S2: When transporting grain, place temperature monitoring devices on the bottom, middle and top layers inside the silo to monitor the temperature;

[0016] S3: When the temperature is detected to be too high, the device is started to transport air into the warehouse through the ventilation pipe;

[0017] S4: Reduce the moisture content of the transported air through the filtering device so that the air can absorb the moisture in the grain after entering the silo;

[0018] S5: The temperature of the air is lowered by semiconductor refrigeration sheets, so that the air can quickly absorb heat and lower the temperature inside the warehouse after entering the warehouse.

[0019] Beneficial effects of the present invention:

[0020] The present invention provides a low-temperature grain storage silo and a ventilation method thereof, which effectively reduces the temperature inside the silo by improving the air flowability inside the silo, and takes away the moisture of the grain, thereby increasing the storage time of the grain, reducing the decline in the quality and nutritional value of the grain, and reducing the problems of mildew and germination. The moisture in the air is related to the weather. On rainy days, the moisture in the air is sucked into the bellows, causing the grain inside the silo to become damp.

[0021] The present invention provides a low-temperature grain storage bin and a ventilation method thereof. An activated carbon filter is set up. Since activated carbon is placed inside the activated carbon filter, when air passes through the activated carbon filter, the activated carbon absorbs moisture in the air and then reduces the humidity of the air, thereby reducing the humidity of the air inside the body, thereby preventing grain from getting damp and germinating. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 is a flow chart of the method of the present invention;

[0024] Figure 2 It is a stereogram in the present invention;

[0025] Figure 3 is a cross-sectional view of the warehouse body in the present invention;

[0026] Figure 4 is a three-dimensional diagram of the bellows of the present invention;

[0027] Figure 5 is a cross-sectional view of the bellows of the present invention;

[0028] Figure 6 is a stereogram of the first filter hole and the second filter hole in the present invention;

[0029] Figure 7 is a three-dimensional diagram of the first sealing block and the second sealing block in the present invention;

[0030] Figure 8 It is a three-dimensional diagram of the semiconductor refrigeration sheet in the present invention.

[0031] Legend:

[0032] 1. Warehouse body; 11. Support column; 12. Foundation; 13. Fixed frame; 14. Ventilation duct; 15. Bellows; 16. First fixed plate; 17. Threaded rod; 18. Press block; 19. Air filter; 111. Fan; 112. Mask; 2. First filter hole; 21. First sealing block; 22. Activated carbon filter; 23. First handle; 24. Stud; 25. Nut; 3. Second filter hole; 31. Second sealing block; 32. Sodium hydroxide filter; 33. Second handle; 4. Second fixed plate; 41. Through hole; 42. Semiconductor refrigeration plate; 5. Baffle; 51. Filter frame; 52. Gauze; 6. Inspection hole; 61. Transparent sealing plate; 7. First sealing gasket; 71. Second sealing gasket. DETAILED DESCRIPTION

[0033] 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.

[0034] Specific examples are given below.

[0035] See also Figure 1 - Figure 8 The present invention provides a low-temperature grain storage warehouse and a ventilation method thereof, comprising a warehouse body 1; a plurality of support columns 11 are fixedly connected to the end of the warehouse body 1; a foundation 12 is fixedly connected to the bottom of the support column 11; a pair of fixing frames 13 are fixedly connected to the inner side wall of the warehouse body 1; a ventilation pipe 14 is fixedly connected to the middle of the fixing frame 13; one end of the ventilation pipe 14 passes through the side wall of the warehouse body 1; a bellows 15 is fixedly connected to the end of the ventilation pipe 14; a first fixing plate 16 is fixedly connected to the inner side wall of the bellows 15; two pairs of threaded rods 17 are fixedly connected to the side wall of the first fixing plate 16; the first fixing plate 16 has two pairs of threaded rods 17 fixedly connected to the side wall; the first fixing The side wall of the plate 16 is detachably mounted with an air filter 19; the middle of the threaded rod 17 is sleeved with a pressure block 18; the inner wall of the bellows 15 is fixedly connected with a fan 111; the side wall of the bellows 15 is detachably mounted with a mask 112. When working, grain is the foundation of the country. Every year, the country stores a large amount of grain. After the grain is stored in the warehouse body 1, the newly harvested, unripe, sprouted, and high-moisture grains have a large respiration intensity and generate more heat through respiration, which leads to a high temperature inside the granary, and then causes the grain to The activity of microorganisms in the food is enhanced, which accelerates the metabolism of the food, reduces the quality and nutritional value of the food, and causes problems such as mildew and germination. Through the ventilation pipe 14 set inside the warehouse body 1, and the ventilation pipe 14 is evenly distributed inside the warehouse body 1, and a large number of pores are opened on the surface of the ventilation pipe 14, the air is sucked into the bellows 15 through the fan 111. Before the air enters the bellows 15, the mask 112 will perform preliminary filtration on the air, so that larger impurities are blocked by the foundation 12 and cannot enter the bellows 15. Then, the air is filtered by the air filter 19 and enters the bellows 15 and is transported to the warehouse body 1 through the ventilation pipe 14. The air ventilation pipe 14 is transported to various places inside the warehouse body 1, and then the moisture and temperature inside the warehouse body 1 are taken away by the flow of air, and the heat is discharged from the top of the warehouse body 1, thereby forming a cycle. By improving the air flow inside the warehouse body 1, the temperature inside the warehouse body 1 is effectively reduced, and the moisture of the food is taken away at the same time, thereby increasing the storage time of the food, reducing the decline in the quality and nutritional value of the food, and causing problems such as mildew and germination.

[0036] Further, such as Figure 4 - Figure 7As shown, the side wall of the bellows 15 is provided with a first filter hole 2; the inner wall of the bellows 15 is fixedly connected with a first sealing block 21; the inner wall of the first sealing block 21 is slidably connected with an activated carbon filter 22; the side wall of the bellows 15 is fixedly connected with multiple groups of studs 24; the side wall of the studs 24 is threadedly connected with a nut 25; the side wall of the activated carbon filter 22 is fixedly connected with a first handle 23; the side wall of the activated carbon filter 22 is provided with two pairs of fixing holes. During operation, the moisture in the air is related to the weather. On rainy days, the moisture in the air is sucked into the inside of the bellows 15 and enters the grain inside the warehouse body 1, causing it to become damp. Through the set activated carbon filter 22, since activated carbon is placed inside the activated carbon filter 22, when the air passes through the activated carbon filter 22, the activated carbon will absorb the moisture in the air, thereby reducing the humidity of the air, thereby reducing the air humidity inside the body 1, and thus causing the grain to become damp and germinate.

[0037] Further, such as Figure 4 - Figure 7 As shown, the side wall of the bellows 15 is provided with a second filter hole 3; the inner side wall of the bellows 15 is fixedly connected with a second sealing block 31; the inner side wall of the second sealing block 31 is slidably connected with a sodium hydroxide filter 32; the side wall of the sodium hydroxide filter 32 is fixedly connected with a second handle 33. During operation, after the air passes through the activated carbon filter 22 and enters the sodium hydroxide filter 32, there are a large number of pores on the surface of the sodium hydroxide filter 32. When the air enters the interior of the sodium hydroxide filter 32, a desiccant made of sodium hydroxide is placed inside the sodium hydroxide filter 32. After the air passes through the sodium hydroxide filter 32, it absorbs moisture in the air, so that the moisture in the air is further absorbed, thereby effectively increasing the dryness of the air passed into the warehouse body 1. After the dry air is passed into the warehouse body 1, the air can absorb the moisture inside the warehouse body 1, and then the air is discharged by the exhaust device on the top of the warehouse body 1, thereby effectively increasing the dryness of the grain inside the warehouse body 1, thereby increasing the storage time of the grain.

[0038] Further, such as Figure 5 and Figure 8As shown, the inner wall of the bellows 15 is fixedly connected to a second fixing plate 4; a plurality of through holes 41 are provided in the middle of the second fixing plate 4; a semiconductor refrigeration plate 42 is fixedly connected to the top of the second fixing plate 4; the semiconductor refrigeration plate 42 is arranged in an array. When working, when current passes through the semiconductor refrigeration plate 42, electrons flow from the N-type semiconductor to the P-type semiconductor. In this process, the electrons combine with the holes in the semiconductor to release heat, thereby producing a cooling effect on the P-type semiconductor side. On the N-type semiconductor side, the flow of electrons reduces the concentration of holes, which absorb heat, and a temperature difference is formed on both sides of the electric couple, thereby achieving a cooling effect. The semiconductor refrigeration plate 42 is arranged to effectively reduce the air inside the bellows 15, thereby reducing the temperature inside the warehouse body 1, thereby reducing the temperature inside the warehouse body 1, thereby effectively increasing the effect of the equipment on grain storage.

[0039] Further, such as Figure 5 As shown, the inner wall of the bellows 15 is fixedly connected with a retaining bar 5; the inner wall of the bellows 15 is threadedly connected with a filter frame 51; the middle part of the filter frame 51 is fixedly connected with a gauze 52. When working, the gauze 52 is set, and the diameter of the surface of the gauze 52 is small, so that small insects in the air cannot pass through the gauze 52, thereby reducing the situation of small insects entering the interior of the warehouse body 1, thereby effectively reducing the situation of insect pests inside the warehouse body 1, thereby improving the use effect of the equipment.

[0040] Further, such as Figure 4 - Figure 6 As shown, an inspection hole 6 is provided on the side wall of the bellows 15; a transparent sealing plate 61 is detachably installed on the side wall of the bellows 15. During operation, after the equipment has been running for a period of time, it is necessary to regularly inspect the equipment to ensure that the equipment can continue to operate stably. Through the inspection hole 6 provided on the side wall of the bellows 15, the staff can enter the interior of the warehouse body 1 from the inspection hole 6 to inspect it. Through the transparent sealing plate 61, the staff can see the situation inside the bellows 15 through the transparent sealing plate 61 during inspection, thereby making a preliminary judgment on the situation of the equipment, thereby effectively facilitating the staff to maintain the equipment.

[0041] Further, such as Figure 4 - Figure 6As shown, the side wall of the bellows 15 is fixedly connected to a first sealing gasket 7; the side wall of the first fixed plate 16 is fixedly connected to a second sealing gasket 71. During operation, the first sealing gasket 7 arranged between the transparent sealing plate 61 and the bellows 15 effectively increases the sealing performance between the transparent sealing plate 61 and the bellows 15, so that the staff can intuitively see the internal conditions of the bellows 15, and the inspection hole 6 arranged effectively facilitates the staff to inspect the inside of the warehouse body 1, thereby facilitating the staff to maintain the equipment, and the second sealing gasket 71 arranged between the air filter 19 and the first fixed plate 16 effectively increases the sealing effect between the air filter 19 and the first fixed plate 16, thereby effectively improving the sealing performance of the equipment, thereby reducing the amount of air entering the bellows 15 from the gap between the first fixed plate 16 and the air filter 19, thereby effectively increasing the filtering effect of the air filter 19.

[0042] A ventilation method for a low-temperature grain storage bin, characterized in that the method is applicable to a low-temperature grain storage bin in claims 1-7, and comprises the following steps:

[0043] S1: removing impurities from the grain and transporting it to the interior of the silo (1) through a conveying device;

[0044] S2: When transporting grain, temperature monitoring devices are placed on the bottom layer, middle layer and top layer inside the warehouse (1) to monitor the temperature;

[0045] S3: When it is detected that the temperature is too high, the device is started to transport air into the interior of the warehouse (1) through the ventilation pipe (14);

[0046] S4: reducing the moisture content of the transported air through a filtering device so that the air can absorb moisture from the grain after entering the interior of the silo (1);

[0047] S5: The temperature of the air is lowered by the semiconductor refrigeration sheet 42, so that the air can quickly absorb heat and lower the temperature inside the warehouse body 1 after entering the warehouse body 1.

[0048] Working principle: Grain is the foundation of a country. Every year, the country stores a large amount of grain. After the grain is stored in the warehouse body 1, the newly harvested, unripe, immature, sprouted, and high-moisture grains have a large respiration intensity and generate more heat through respiration, which leads to a higher temperature inside the granary, thereby enhancing the activity of microorganisms in the grain, thereby accelerating the metabolism of the grain, causing the quality and nutritional value of the grain to decline, and causing problems such as mildew and germination. Through the ventilation pipe 14 set inside the warehouse body 1, and the ventilation pipe 14 is evenly distributed inside the warehouse body 1, and a large number of pores are opened on the surface of the ventilation pipe 14, the air is sucked into the bellows 15 through the fan 111. Before the air enters the bellows 15, the mask 112 will blow the air The air is initially filtered so that larger impurities are blocked by the foundation 12 and cannot enter the interior of the bellows 15. Then, it is filtered by the air filter 19 and enters the interior of the bellows 15 and is transported to the interior of the warehouse body 1 through the ventilation pipe 14. The air ventilation pipe 14 transports the air to various places inside the warehouse body 1. Then, the moisture and temperature inside the warehouse body 1 are taken away by the flow of air, and the heat is discharged from the top of the warehouse body 1, thereby forming a cycle. By improving the air flow inside the warehouse body 1, the temperature inside the warehouse body 1 is effectively reduced, and the moisture of the grain is taken away at the same time, thereby increasing the storage time of the grain, reducing the decline in the quality and nutritional value of the grain, and reducing the problems of mildew and germination. The moisture in the air is related to the weather. On rainy days, the moisture in the air is sucked into the bellows 1. 5, the grain inside the warehouse 1 is damp, and passes through the activated carbon filter 22. Since the activated carbon is placed inside the activated carbon filter 22, when the air passes through the activated carbon filter 22, the activated carbon absorbs the moisture in the air, thereby reducing the humidity of the air, thereby reducing the humidity of the air inside the warehouse 1, so that the grain is damp and germinates. After the air passes through the activated carbon filter 22, it enters the sodium hydroxide filter 32. The surface of the sodium hydroxide filter 32 has a large number of pores. When the air enters the sodium hydroxide filter 32, a desiccant made of sodium hydroxide is placed inside the sodium hydroxide filter 32. After the air passes through the sodium hydroxide filter 32, it absorbs the moisture in the air, so that the moisture in the air is further reduced. step is absorbed, thereby effectively increasing the dryness of the air entering the warehouse body 1. After the dry air is introduced into the warehouse body 1, the air can absorb the moisture inside the warehouse body 1, and then the air is discharged by the exhaust device on the top of the warehouse body 1, thereby effectively increasing the dryness of the grain inside the warehouse body 1, thereby increasing the storage time of the grain. When current passes through the semiconductor refrigeration sheet 42, electrons flow from the N-type semiconductor to the P-type semiconductor. In this process, electrons combine with holes in the semiconductor to release heat, thereby producing a cooling effect on the P-type semiconductor side. On the N-type semiconductor side, the flow of electrons reduces the concentration of holes, which absorbs heat, and a temperature difference is formed on both sides of the galvanic couple, thereby achieving a cooling effect. By setting the semiconductor refrigeration sheet 42,The air inside the bellows 15 is effectively reduced, thereby reducing the temperature inside the warehouse body 1, thereby achieving a reduction in the temperature inside the warehouse body 1, thereby effectively increasing the effect of the equipment on grain storage, through the provision of the gauze 52, and the diameter of the surface of the gauze 52 is small, so that small insects in the air cannot pass through the gauze 52, thereby reducing the situation of small insects entering the warehouse body 1, thereby effectively reducing the situation of insect pests inside the warehouse body 1, thereby improving the use effect of the equipment, after the equipment has been running for a period of time, it is necessary to regularly inspect the equipment to ensure that the equipment can continue to operate stably, through the inspection hole 6 opened on the side wall of the bellows 15, the staff can enter the warehouse body 1 from the inspection hole 6 to inspect it, through the provision of the transparent sealing plate 61, the staff can see the situation inside the bellows 15 through the transparent sealing plate 61 during inspection, thereby making a preliminary judgment on the situation of the equipment, thereby effectively facilitating the staff The maintenance of the equipment by the staff is facilitated by the first sealing gasket 7 set between the transparent sealing plate 61 and the bellows 15, which effectively increases the sealing between the transparent sealing plate 61 and the bellows 15, so that the staff can intuitively see the situation inside the bellows 15, and the inspection hole 6 is effectively provided to facilitate the staff to inspect the inside of the warehouse body 1, thereby facilitating the maintenance of the equipment by the staff, and the second sealing gasket 71 set between the air filter 19 and the first fixed plate 16 effectively increases the sealing effect between the air filter 19 and the first fixed plate 16, thereby effectively improving the sealing of the equipment, thereby reducing the air from the gap between the first fixed plate 16 and the air filter 19 Entering the inside of the bellows 15, thereby effectively increasing the filtering effect of the air filter 19, a ventilation method for a low-temperature grain storage bin, characterized in that: the method is applicable to a low-temperature grain storage bin in claims 1-7, comprising the following steps:,

[0049] S1: remove impurities from the grain and transport it to the interior of the silo 1 through a conveying device;

[0050] S2: When conveying grain, place the temperature monitoring device on the bottom layer, middle layer and top layer inside the silo 1 to monitor the temperature;

[0051] S3: When the temperature is detected to be too high, the device is started to deliver air to the interior of the warehouse body 1 through the ventilation pipe 14;

[0052] S4: reducing the moisture content of the transported air through a filtering device so that the air can absorb the moisture in the grain after entering the interior of the silo 1;

[0053] S5: The temperature of the air is lowered by the semiconductor refrigeration sheet 42, so that the air can quickly absorb heat and lower the temperature inside the warehouse body 1 after entering the warehouse body 1.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A low-temperature grain storage bin, comprising a bin body (1); characterized in that: The end of the warehouse body (1) is fixedly connected to a plurality of support columns (11); the bottom of the support column (11) is fixedly connected to a foundation (12); the inner wall of the warehouse body (1) is fixedly connected to a pair of fixing frames (13); a ventilation pipe (14) is fixedly connected to the middle of the fixing frame (13); one end of the ventilation pipe (14) passes through the side wall of the warehouse body (1); the end of the ventilation pipe (14) is fixedly connected to a bellows (15); the inner wall of the bellows (15) is fixedly connected to a first fixing plate (16); the side wall of the first fixing plate (16) is fixedly connected to two pairs of threaded rods (17); an air filter (19) is detachably mounted on the side wall of the first fixing plate (16); a pressing block (18) is sleeved on the middle of the threaded rod (17); a fan (111) is fixedly connected to the inner wall of the bellows (15); and a mask (112) is detachably mounted on the side wall of the bellows (15).

2. A low temperature grain storage bin according to claim 1, characterized in that: The side wall of the bellows (15) is provided with a first filter hole (2); the inner side wall of the bellows (15) is fixedly connected with a first sealing block (21); the inner side wall of the first sealing block (21) is slidably connected with an activated carbon filter (22); the side wall of the bellows (15) is fixedly connected with a plurality of groups of studs (24); the side walls of the studs (24) are threadedly connected with nuts (25); the side wall of the activated carbon filter (22) is fixedly connected with a first handle (23); the side wall of the activated carbon filter (22) is provided with two pairs of fixing holes.

3. A low temperature grain storage bin according to claim 1, characterized in that: The side wall of the bellows (15) is provided with a second filter hole (3); the inner wall of the bellows (15) is fixedly connected to a second sealing block (31); the inner wall of the second sealing block (31) is slidably connected to a sodium hydroxide filter (32); and the side wall of the sodium hydroxide filter (32) is fixedly connected to a second handle (33).

4. A low temperature grain storage bin according to claim 1, characterized in that: A second fixing plate (4) is fixedly connected to the inner wall of the bellows (15); a plurality of through holes (41) are provided in the middle of the second fixing plate (4); a semiconductor cooling plate (42) is fixedly connected to the top of the second fixing plate (4); the semiconductor cooling plate (42) is arranged in an array.

5. A low temperature grain storage bin according to claim 1, characterized in that: The inner wall of the wind box (15) is fixedly connected with a stop bar (5); the inner wall of the wind box (15) is threadedly connected with a filter frame (51); and a gauze net (52) is fixedly connected to the middle of the filter frame (51).

6. A low temperature grain storage bin according to claim 1, characterized in that: The side wall of the bellows (15) is provided with an inspection hole (6); and the side wall of the bellows (15) is detachably provided with a transparent sealing plate (61).

7. A low-temperature grain storage bin according to claim 1, characterized in that: A first sealing gasket (7) is fixedly connected to the side wall of the bellows (15); and a second sealing gasket (71) is fixedly connected to the side wall of the first fixing plate (16).

8. A ventilation method for a low-temperature grain storage bin, characterized in that: The method is applicable to a low-temperature grain storage bin in claims 1-7, comprising the following steps: S1: removing impurities from the grain and transporting it to the interior of the silo (1) through a conveying device; S2: When transporting grain, temperature monitoring devices are placed on the bottom layer, middle layer and top layer inside the warehouse (1) to monitor the temperature; S3: When it is detected that the temperature is too high, the device is started to transport air into the interior of the warehouse (1) through the ventilation pipe (14); S4: reducing the moisture content of the transported air through a filtering device so that the air can absorb moisture from the grain after entering the interior of the bin (1); S5: The temperature of the air is lowered by using the semiconductor refrigeration sheet (42), so that after the air enters the interior of the warehouse body (1), it can quickly absorb heat to lower the temperature inside.

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