Grain production site drying and storage integrated warehouse and operation method

Abstract

The application discloses a kind of grain production site dry storage integrated warehouse and operating method, its structure includes cylinder type warehouse, ventilation system and material system.The outer wall of cylinder type warehouse is provided with a layer of radiation refrigeration material;The ventilation system includes ventilation cage, ventilation cage includes vertical pipe and cross pipe, vertical pipe is arranged inside cylinder type warehouse, ventilation hole is evenly opened on the pipe wall of vertical pipe, one end of cross pipe is connected with vertical pipe, the other end of cross pipe is arranged outside cylinder type warehouse, and is connected with cylinder type warehouse by support rod;The material system includes material cone plate, and material cone plate is fixedly connected with ventilation cage, and is connected with cone bottom by support rod.The application has reasonable structure, solves the problem of central grain preferential discharge when circulating in and out, can avoid the influence of adverse environment such as rainfall, effectively reduces the temperature rise in the warehouse caused by solar radiation, and precipitation is efficient, easy to operate, energy saving and environmental protection.

Description

Technical Field

[0001] This invention belongs to the field of drying and storage, and particularly relates to an integrated dry storage warehouse for grain production areas and its operation method. Background Technology

[0002] Grain has a high moisture content at harvest. If it is not dried in time or is transported and stored directly without drying, it will mold and deteriorate, causing grain loss and economic losses, and even food safety incidents. Traditional coal-fired grain drying methods face the challenge of being "unsuitable for organic processing," while most rural grain storage facilities are rudimentary, leading to a decline in the quality of stored grain in most areas. Furthermore, the safe moisture content for grain storage is usually lower than that required for processing, resulting in pre-storage drying and dehydration followed by post-processing conditioning and water addition, increasing energy consumption and costs, and reducing the quality of processed grain. Simultaneously, it is difficult to sell at the appropriate time, resulting in low storage efficiency. In addition, grain drying and storage facilities require a certain amount of land, making land use a significant issue. Therefore, it is necessary to develop and promote new, applicable, green, energy-saving, and land-saving grain drying and storage technologies and equipment, and to adopt grain storage technologies that match the quality of subsequent processing.

[0003] Existing technology discloses a heated grain drying equipment (201720204110.9), including a grain elevator and a drying device. The drying device includes a cylindrical drying chamber, ventilation pipes, air distribution columns, a fan, a belt conveyor, and a support frame. The cylindrical drying chamber has a conical upper cover and an inverted conical lower cover. This invention can achieve electrically heated grain drying, avoiding the environmental pollution problems caused by traditional coal-fired drying. However, it suffers from problems such as complex ventilation pipe structure, easy material stagnation during discharge, and lack of effective heat insulation measures for the silo. Existing patents disclose an intelligent grain storage silo combining natural and mechanical ventilation (202110474519.3). Its structure includes a grain storage silo, a mechanical ventilation system, a grain self-circulation system, and an intelligent control system. Its mechanical ventilation system includes several diffuser chambers with uniform air distribution pipes, and the silo wall is equipped with a rainproof and heat-insulating cover. It proposes an intelligent ventilation system that adjusts the ventilation system according to the external temperature and humidity and the grain condition inside the silo, achieving green ventilation and moisture reduction for grain storage. However, it also suffers from problems such as complex diffuser chamber structure and material stagnation during the circulating material flow. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an integrated dry storage silo for grain production and its operation method, which solves the problems of material stagnation in the silo's circulating feed-in / out section, susceptibility of the silo to external environmental influences, and mismatch between storage quality and processing requirements.

[0005] The present invention adopts the following technical solution.

[0006] A grain-producing area dry storage silo includes a cylindrical silo, a ventilation system, and a material equalization system. The cylindrical silo includes a conical top, a silo body, and a conical bottom, with the top and bottom connected to both ends of the silo body. The outer wall of the cylindrical silo is provided with a layer of radiant cooling material. The ventilation system includes a ventilation cage, which includes vertical pipes and horizontal pipes. The vertical pipes are located inside the cylindrical silo, and ventilation holes are evenly distributed on the walls of the vertical pipes. One end of the horizontal pipe is connected to the vertical pipe, and the other end of the horizontal pipe is located outside the cylindrical silo and connected to the cylindrical silo via a support rod. The material equalization system includes a material equalization cone plate, which is fixedly connected to the ventilation cage and connected to the cone bottom via a support rod.

[0007] Furthermore, the material equalization cone plate includes a material equalization inclined plate and a material equalization cone bottom. The material equalization inclined plate is disposed on the material equalization cone bottom. The material equalization cone plate includes two forms: a spiral material equalization cone plate and an umbrella-type material equalization cone plate.

[0008] Furthermore, the integrated dry storage warehouse at the grain production site also includes a grain circulation system, which includes a hoist, a grain outlet tee, a grain inlet tee, and a grain inlet pipe flange.

[0009] The feed tee is connected to the discharge port of the elevator via a feed pipe flange, and the other end of the feed tee is connected to the cone top via a cone top flange.

[0010] One end of the grain outlet tee is connected to the bottom of the cone via a cone-bottom flange, and the other end is connected to the feed inlet of the elevator via a flange.

[0011] Furthermore, the integrated dry storage warehouse for grain production also includes a control system, which includes an intelligent control cabinet, a temperature and humidity sensor, and a moisture sensor.

[0012] The intelligent control cabinet is installed on the outer wall of the cylindrical silo and is connected to the temperature and humidity sensors and the moisture sensor.

[0013] Furthermore, the integrated dry storage warehouse for grain production also includes a support frame, which comprises horizontal channel steel and vertical channel steel, and the horizontal channel steel and vertical channel steel are connected to the outer surface of the warehouse.

[0014] Furthermore, the ventilation system also includes a fan and a dehumidifying fan. The fan is connected to the horizontal pipe at one end of the outer side of the silo, and the dehumidifying fan is installed on the grain inlet chute of the grain inlet tee.

[0015] Furthermore, the silo also includes a manhole, which is located on the top of the cone, and the manhole and the top of the cone are an integrated structure.

[0016] A method for operating an integrated dry storage warehouse for grain at the production site includes the following steps:

[0017] Step 1: Process the raw materials by removing impurities;

[0018] Step 2: Send the material obtained in Step 1 into the integrated silo and measure the moisture content using a moisture sensor;

[0019] Step 3: Based on the moisture content obtained in Step 2, determine the safe storage period of the material, and in conjunction with the external environmental conditions, turn on the ventilation system to ventilate and reduce moisture, and use the transfer process in conjunction with it.

[0020] Step 4: Stop routine ventilation when the moisture content of the material obtained in Step 3 drops to the target moisture content;

[0021] Step 5: When the moisture content of the material obtained in Step 4 increases due to environmental conditions or the ambient temperature is lower than the grain pile temperature, ventilate to reduce moisture or lower temperature under set conditions; when the moisture content drops to the target moisture content, or the grain pile temperature drops to a certain temperature, stop ventilation; when the moisture content decreases due to environmental conditions, ventilate to condition under set conditions, and stop ventilation when the moisture content reaches the target moisture content.

[0022] Step 6: Depending on the intended use, the materials obtained in Step 5 will be processed differently. If they are to be stored in a grain depot, they will be ventilated under suitable conditions to reduce the moisture content to the local safe storage moisture content before being released from the depot. If they are to be stored in a processing enterprise, they can be released directly from the depot.

[0023] Furthermore, the relationship between the safe storage period of the material and its moisture content and temperature in step 3 is as follows:

[0024] ,

[0025] Where t is the safe storage period in days; x is the temperature in °C; y is the moisture content in %; and a, b, c, and d are parameters.

[0026] Furthermore, the conditions for ventilation or stopping ventilation in step 5 are as follows:

[0027] When the moisture content of the material increases by 1 percentage point due to environmental conditions, the ventilation system is turned on to reduce the moisture when the absolute humidity of the outside atmosphere is lower than the absolute humidity of the air in the grain pile inside the warehouse. Ventilation is stopped when the moisture content drops to the target moisture content.

[0028] When the outside air temperature is 8°C or more lower than the grain pile temperature, ventilation should be carried out to cool down the warehouse, provided that the relative humidity of the outside air is greater than or equal to the atmospheric equilibrium relative humidity corresponding to a 1 percentage point decrease in the target moisture content and less than or equal to the relative humidity of the air inside the grain pile. When the outside air temperature is less than 4°C lower than the grain pile temperature, ventilation should be stopped.

[0029] When the moisture content decreases by 0.5 percentage points due to environmental conditions, ventilation is used to condition the grain pile inside the warehouse, provided that the absolute humidity of the outside atmosphere is higher than that of the grain pile inside the warehouse. Ventilation is stopped when the moisture content reaches the target moisture content.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The material equalization system adopted solves the problem that when the existing equipment circulates grain in and out, the grain in the center of the warehouse has a fast discharge speed and the grain near the warehouse wall has a slow discharge speed or even stops, thus avoiding uneven moisture in individual grain layers due to uneven discharge and eliminating the dangerous factors of grain storage in the warehouse; (2) The fish scale hole warehouse wall is multifunctional, serving as both an air outlet for the grain pile and a rainproof function. Together with the warehouse body's radiant cooling material, it reduces the problem of temperature rise in the warehouse caused by solar radiation; (3) The intelligent control system can automatically ventilate and adjust the warehouse based on the safe storage period of grains with different moisture contents and the "tiered precipitation temperature control and humidification" process, achieving green intelligent precipitation, short-term safe storage (generally not exceeding 6 months), and maintaining the grain moisture content in line with processing requirements. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the integrated dry storage warehouse structure at the grain production site of the present invention;

[0032] Figure 2 This is a schematic diagram of the ventilation cage for the integrated dry storage warehouse at the grain production site of the present invention;

[0033] Figure 3 This is a schematic diagram of the fish-scale hole arrangement of the integrated dry storage warehouse at the grain production site according to the present invention;

[0034] Figure 4 This is a schematic diagram of the uniform feed cone plate of the integrated dry storage warehouse for grain production areas of the present invention;

[0035] Figure 5 This is a process flow diagram of the method of the present invention;

[0036] In the diagram: 1. Cone top, 2. Manhole, 3. Silo body, 4. Ventilation cage, 5. Fish scale holes, 6. Horizontal channel steel, 7. Fan, 8. Vertical channel steel, 9. Cone bottom, 10. Cone bottom flange, 11. Grain outlet tee, 12. Elevator, 13. Intelligent control cabinet, 14. Grain inlet tee, 15. Cone top flange, 16. Grain inlet pipe flange, 17. Exhaust fan, 18. Material distribution cone plate, 19. Material distribution inclined plate, 20. Material distribution cone bottom. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this invention. The embodiments described in this application are merely some embodiments of this invention, and not all embodiments. Based on the spirit of this invention, other embodiments obtained by those skilled in the art without creative effort are all within the protection scope of this invention.

[0038] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0039] like Figures 1-4 As shown, the present invention provides an integrated dry storage silo for grain production, comprising a cylindrical silo, a ventilation system, a material equalization system, a grain circulation system, a support frame, and a control system.

[0040] The cylindrical silo includes a cone top 1, a manhole 2, a silo body 3, a cone bottom 9, a cone bottom flange 10, and a cone top flange 15. The outer wall of the cylindrical silo is coated with a layer of radiative cooling material. The cone top 1 and the cone bottom 9 are fixedly connected to the upper and lower ends of the silo body 3. The manhole 2 is located on the cone top 1, and the manhole 2 and the cone top 1 are an integrated structure.

[0041] The storage body 3 is equipped with fish-scale holes 5, which can be arranged in two forms: parallel and staggered. The conical bottom 9 is equipped with fish-scale holes 5 or other types of holes, and the holes do not leak grain.

[0042] The ventilation system includes a ventilation cage 4, a blower 7, and a dehumidifying blower 17. The ventilation cage 4 is T-shaped, comprising a vertical pipe and a horizontal pipe. The vertical pipe is installed inside the silo, with its central axis coinciding with the central axis of the silo body 3. One end of the horizontal pipe is connected to the vertical pipe, and the other end is located outside the silo and connected to the blower 7, which is also connected to the silo via a support rod. The dehumidifying blower 17 is installed on the grain inlet chute of the grain inlet tee 14 to assist in removing moisture from the grain pile.

[0043] The preferred diameter of the horizontal pipe in the ventilation cage 4 is 200-500mm, the diameter of the vertical pipe is 300-1500mm, and the length H0 is 1000-2500mm. The distance H1 between the centerline of the horizontal pipe and the bottom of the vertical pipe accounts for 10%-50% of the total length H0 of the vertical pipe.

[0044] Ventilation holes (circular holes, elongated holes, or bridge-shaped holes) are evenly opened on the vertical pipe wall of the ventilation cage 4, arranged in parallel or staggered positions, so that the holes do not leak grain, and the opening rate is 25%-35%.

[0045] Fan 7 can be a centrifugal fan, an axial fan, or, if necessary, a pneumatic heat-generating fan (which provides both ventilation and heating).

[0046] The material distribution system includes a material distribution cone plate 18 and a cone base 9. The material distribution cone plate 18 includes a material distribution inclined plate 19 and a material distribution cone base 20. The material distribution cone plate 18 and the cone base 9 are used in conjunction. The material distribution cone plate 18 is fixedly connected to the ventilation cage 4 and is connected to the cone base 9 through a support rod.

[0047] The preferred material distribution cone plate 18 has two types: spiral and umbrella. The minimum distance L1 between the bottom edge of the cone and the cone bottom 9 in the horizontal direction is 1 / 4 to 1 / 2 of the distance L0 between the outer wall of the ventilation cage 4 vertical pipe and the silo body 3 in the direction perpendicular to the central axis of the vertical pipe.

[0048] The preferred spiral-shaped material-equalizing cone plate has a material-equalizing inclined plate 19 at a 45° angle to the horizontal plane. The material-equalizing inclined plate 19 is disposed on the material-equalizing cone bottom 20, and together with the 45° angle cone bottom 9 and the 45° angle material-equalizing cone bottom 20, they constitute a material-equalizing system. The umbrella-shaped material-equalizing cone plate is a folded cone plate welded from multiple plates, and the angle between the cone containing its maximum bottom edge and the horizontal plane is 45°.

[0049] The grain circulation system includes an elevator 12, a discharge tee 11, an inlet tee 14, and an inlet pipe flange 16. The inlet tee 14 has an exhaust fan 17 installed in its inlet chute. One end of the inlet tee 14 is connected to the discharge port of the elevator 12 via the inlet pipe flange 16, and the other end is connected to the cone top 1 via the cone top flange 15. One end of the discharge tee 11 is connected to the cone bottom 9 via the cone bottom flange 10, and the other end is connected to the inlet of the elevator 12 via a flange.

[0050] The support includes horizontal channel steel 6 and vertical channel steel 8, which are fixedly connected to the outer surface of the silo body 3 to support the cylindrical silo.

[0051] The control system includes an intelligent control cabinet 13, temperature and humidity sensors, and moisture sensors. Several temperature and humidity sensors and moisture sensors are installed inside the silo body 3 to monitor the temperature and humidity of the gas in the grain pile and the moisture content of the grain. One temperature and humidity sensor is installed inside the upper conical top 1 of the silo to monitor the temperature and humidity of the air layer inside the silo. Another temperature and humidity sensor is installed near the outer side of the conical top 1 of the silo to monitor the temperature and humidity of the surrounding atmosphere. The intelligent control cabinet 13 is mounted on the outer wall of the silo and connected to the temperature and humidity sensors and moisture sensors.

[0052] The intelligent control process is mainly based on the safe storage period of grains with different moisture contents and the "tiered precipitation temperature control and moisture retention" process, combined with external environmental conditions and the condition of the grain in the warehouse, to achieve automatic ventilation and storage control.

[0053] The operational method for achieving dry storage of grain using the aforementioned integrated dry storage warehouse at the grain production site includes the following steps:

[0054] Step 1: Process the raw materials by removing impurities;

[0055] Step 2: Send the material obtained in Step 1 into the integrated silo and measure the moisture content using a moisture sensor;

[0056] Step 3: Based on the moisture content obtained in Step 2, determine the safe storage period of the material, and in conjunction with the external environmental conditions, turn on the ventilation system to ventilate and reduce moisture, and use the transfer process in conjunction with it.

[0057] Step 4: When the moisture content of the material obtained in Step 3 drops to the target moisture content (2-3 percentage points higher than the local safe storage moisture content), stop routine ventilation;

[0058] Step 5: When the moisture content of the material obtained in Step 4 increases due to environmental conditions or the ambient temperature is lower than the grain pile temperature, ventilate to reduce moisture or lower the temperature under suitable conditions; stop ventilation when the moisture content drops to the target moisture content or the grain pile temperature drops to a certain temperature. When the moisture content decreases due to environmental conditions, ventilate to condition the material under suitable conditions; stop ventilation when the moisture content reaches the target moisture content.

[0059] Step 6: Depending on the intended use, the materials obtained in Step 5 will be processed differently. If they are to be stored in a grain depot, they will be ventilated under suitable conditions to reduce the moisture content to the local safe storage moisture content before being released from the depot. If they are to be stored in a processing enterprise, they can be released directly from the depot.

[0060] The impurity content of the material obtained in step 1 is ≤2%;

[0061] The relationship between the safe storage period of the selected materials in step 3 and the moisture content and temperature is as follows:

[0062] ,

[0063] Where t is the safe storage period (days); x is the temperature (°C); y is the moisture content (%); a, b, c, and d are parameters, which are fixed parameters of the equation and are determined by the relationship between the safe storage period and the temperature and moisture content. Taking corn and rice as examples, their parameters are 7.91, 1.27E6, 6.87, 2.35 and 2.90, 2.72E4, 2.11, 0.54, respectively.

[0064] In step 4, the safe storage moisture content of the materials, taking corn and rice as examples, is generally 13%~14% for corn and 13.5%~14.5% for rice.

[0065] The ventilation or cessation conditions involved in step 5 are as follows: When the moisture content of the material increases by 1 percentage point due to environmental conditions, the ventilation system is activated to reduce moisture, provided that the absolute humidity of the outside atmosphere is lower than the absolute humidity of the air inside the grain pile. Ventilation is stopped when the moisture content drops to the target moisture content. When the outside air temperature is 8°C or higher below the grain pile temperature, ventilation is activated to cool the material, provided that the relative humidity of the outside atmosphere is greater than or equal to the atmospheric equilibrium relative humidity corresponding to a 1 percentage point decrease in the target moisture content and less than or equal to the relative humidity of the air inside the grain pile. Ventilation is stopped when the outside air temperature is less than 4°C below the grain pile temperature. When the moisture content decreases by 0.5 percentage points due to environmental conditions, ventilation is activated to condition the material, provided that the absolute humidity of the outside atmosphere is higher than the absolute humidity of the air inside the grain pile. Ventilation is stopped when the moisture content reaches the target moisture content.

[0066] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The material equalization system adopted solves the problem that when the existing equipment circulates grain in and out, the grain in the center of the warehouse has a fast discharge speed and the grain near the warehouse wall has a slow discharge speed or even stops, thus avoiding uneven moisture in individual grain layers due to uneven discharge and eliminating the dangerous factors of grain storage in the warehouse; (2) The fish scale hole warehouse wall is multifunctional, serving as both an air outlet for the grain pile and a rainproof function. Together with the warehouse body's radiant cooling material, it reduces the problem of temperature rise in the warehouse caused by solar radiation; (3) The intelligent control system can automatically ventilate and adjust the warehouse based on the safe storage period of grains with different moisture contents and the "tiered precipitation temperature control and humidification" process, achieving green intelligent precipitation, short-term safe storage (generally not exceeding 6 months), and maintaining the grain moisture content in line with processing requirements.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. A grain-producing area dry storage integrated silo, comprising a silo, a ventilation system, and a material distribution system, characterized in that: The cylindrical silo includes a cone top (1), a silo body (3) and a cone bottom (9), with the cone top (1) and cone bottom (9) connected to both ends of the silo body (3), and a layer of radiant cooling material is provided on the outer wall of the cylindrical silo. The ventilation system includes a ventilation cage (4), which includes a vertical pipe and a horizontal pipe. The vertical pipe is set inside the cylindrical silo, and ventilation holes are evenly opened on the wall of the vertical pipe. One end of the horizontal pipe is connected to the vertical pipe, and the other end of the horizontal pipe is set outside the cylindrical silo and connected to the cylindrical silo by a support rod. The material distribution system includes a material distribution cone plate (18), which is fixedly connected to the ventilation cage (4) and connected to the cone bottom (9) through a support rod; The material equalization cone plate (18) includes a material equalization inclined plate (19) and a material equalization cone bottom (20). The material equalization inclined plate (19) is set on the material equalization cone bottom (20). The material equalization cone plate (18) includes two forms: a spiral material equalization cone plate and an umbrella material equalization cone plate. The minimum distance L1 of the bottom edge of the material equalization cone plate (18) from the cone bottom (9) in the horizontal direction is 1 / 4 to 1 / 2 of the distance L0 of the outer wall of the ventilation cage (4) vertical pipe from the silo body (3) in the direction perpendicular to the central axis of the vertical pipe. The spiral material equalization cone plate has a material equalization inclined plate (19) at a 45° angle to the horizontal plane. The material equalization inclined plate (19) is set on the bottom (20) of the material equalization cone, and together with the cone bottom (9) at a 45° angle and the material equalization cone bottom (20) at a 45° angle, they form a material equalization system. The umbrella-shaped material equalization cone plate is a folded cone plate welded from multiple plates. The cone at which the maximum bottom edge is located has an angle of 45° with the horizontal plane.

2. The integrated dry storage warehouse for grain production areas according to claim 1, characterized in that: The integrated dry storage warehouse for grain production sites also includes a grain circulation system, which includes a hoist (12), a grain outlet tee (11), a grain inlet tee (14), and a grain inlet pipe flange (16). The feed tee (14) is connected to the discharge port of the elevator (12) through the feed pipe flange (16), and the other end of the feed tee (14) is connected to the cone top (1) through the cone top flange (15); One end of the grain outlet tee (11) is connected to the cone bottom (9) via the cone bottom flange (10), and the other end is connected to the feed port of the elevator (12) via the flange.

3. The integrated dry storage warehouse for grain production areas according to claim 1, characterized in that: The integrated dry storage warehouse for grain production sites also includes a control system, which includes an intelligent control cabinet (13), a temperature and humidity sensor and a moisture sensor. The intelligent control cabinet (13) is installed on the outer wall of the cylindrical silo and is connected to the temperature and humidity sensor and the moisture sensor.

4. The integrated dry storage warehouse for grain production areas according to claim 1, characterized in that: The integrated dry storage warehouse for grain production sites also includes a support frame, which includes horizontal channel steel (6) and vertical channel steel (8), and the horizontal channel steel (6) and vertical channel steel (8) are connected to the outer surface of the warehouse body (3).

5. The integrated dry storage warehouse for grain production areas according to claim 2, characterized in that: The ventilation system also includes a fan (7) and a dehumidifying fan (17). The fan (7) is connected to one end of the horizontal pipe located outside the silo, and the dehumidifying fan (17) is located on the grain inlet chute of the grain inlet tee (14).

6. The integrated dry storage warehouse for grain production areas according to claim 1, characterized in that: The silo also includes a manhole (2), which is located on the cone top (1). The manhole (2) and the cone top (1) are an integrated structure.

7. The operating method of the integrated grain storage and drying warehouse according to claim 3, characterized in that, Includes the following steps: Step 1: Process the raw materials by removing impurities; Step 2: Send the material obtained in Step 1 into the integrated silo and measure the moisture content using a moisture sensor; Step 3: Based on the moisture content obtained in Step 2, determine the safe storage period of the material, and in conjunction with the external environmental conditions, turn on the ventilation system to ventilate and reduce moisture, and use the transfer process in conjunction with it. Step 4: Stop routine ventilation when the moisture content of the material obtained in Step 3 drops to the target moisture content; Step 5: When the moisture content of the material obtained in Step 4 increases due to environmental conditions or the ambient temperature is lower than the grain pile temperature, ventilate to reduce moisture or lower temperature under set conditions; when the moisture content drops to the target moisture content, or the grain pile temperature drops to a certain temperature, stop ventilation; when the moisture content decreases due to environmental conditions, ventilate to condition under set conditions, and stop ventilation when the moisture content reaches the target moisture content. Step 6: Depending on the intended use, the materials obtained in Step 5 are processed differently. If they are to be stored in a grain depot, they are ventilated under suitable conditions to reduce the moisture content to the local safe storage moisture content before being released from the depot. If they are to be stored in a processing enterprise, they are released directly from the depot.

8. The method of claim 7, wherein the method further comprises: The relationship between the safe storage period of the material and its moisture content and temperature in step 3 is as follows: Where t is the safe storage period in days; x is the temperature in °C; y is the moisture content in %; and a, b, c, and d are parameters.

9. The method for operating an integrated dry storage warehouse for grain at the production site according to claim 7, characterized in that, The conditions for ventilation or stopping ventilation in step 5 are as follows: When the moisture content of the material increases by 1 percentage point due to environmental conditions, the ventilation system is turned on to reduce the moisture when the absolute humidity of the outside atmosphere is lower than the absolute humidity of the air in the grain pile inside the warehouse. Ventilation is stopped when the moisture content drops to the target moisture content. When the outside air temperature is 8°C or more lower than the grain pile temperature, ventilation should be carried out to cool down the warehouse, provided that the relative humidity of the outside air is greater than or equal to the atmospheric equilibrium relative humidity corresponding to a 1 percentage point decrease in the target moisture content and less than or equal to the relative humidity of the air inside the grain pile. When the outside air temperature is less than 4°C lower than the grain pile temperature, ventilation should be stopped. When the moisture content decreases by 0.5 percentage points due to environmental conditions, ventilation is used to condition the grain pile inside the warehouse, provided that the absolute humidity of the outside atmosphere is higher than that of the grain pile inside the warehouse. Ventilation is stopped when the moisture content reaches the target moisture content.

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