Grain bin environment temperature and humidity adjusting system and adjusting method thereof

Abstract

A kind of granary environment temperature and humidity regulating system and its regulating method, it is related to the technical field of storage grain environment regulation, regulating system includes storage granary, its inside is equipped with grain turning device, outside is equipped with the temperature and humidity regulating device communicated with it;Grain turning device includes grain turning cylinder, its inside is equipped with the spiral twisted leaf that can transport bottom grain upward;Temperature and humidity regulating device includes the regulating box that can receive the air in the inside of storage granary, and directly input dry dry air or dry hot air to the inside of lower portion of grain turning cylinder, cooperate the action of grain turning device, in the process of grain upward transportation, complete drying and dehumidification work or cooling work, to ensure dehumidification or cooling effect, that is, ensure that the humidity of storage grain environment, can also regulate the temperature of storage grain environment, finally significantly improve the regulating effect of temperature and humidity of regulating system.

Description

Technical Field

[0001] This invention relates to the field of grain storage environment regulation technology, specifically to a grain warehouse environment temperature and humidity regulation system and its regulation method. Background Technology

[0002] In grain storage, the humidity and temperature inside the grain warehouse are key indicators affecting the quality of stored grain. For example, patent application number 201710239337.1 in the patent database discloses an intelligent grain warehouse temperature and humidity detection and control device and method. It uses six evenly distributed heat-conducting boxes to dry the grain, and a stirring motor is set up to stir the grain inside the warehouse to improve the drying speed and uniformity. However, on the one hand, due to the limitations of the grain itself, it is difficult to drive the stirring blades to rotate by the motor. The stirring setting of the grain does not conform to conventional design and will be difficult to implement. On the other hand, although heating and drying the grain through the heat-conducting boxes can reduce the humidity of the storage environment to a certain extent, it ignores the impact of the storage environment temperature on the quality of stored grain, resulting in certain limitations in its temperature and humidity detection and regulation.

[0003] For example, the patent application with application number 201810132354.X in the patent database discloses a multi-functional temperature and humidity control device for grain silos. This device uses external cooling equipment and internal return air ducts, internal air supply ducts, and grain pile air ducts connected to it. It regulates the temperature and humidity of the internal environment of the grain silo by controlling the opening and closing of the internal return air valve, internal air supply valve, and grain pile air duct valve. However, when ventilating from the bottom of the grain to the surface of the grain, or from the surface of the grain to the bottom of the grain, the density of the grain itself, especially when the grain silo is high, makes it difficult for the gas to penetrate the grain to regulate the temperature and humidity. Even if the gas can penetrate the grain, it flows along the fixed air gaps that exist in the grain pile itself, making it difficult to guarantee the uniformity of the overall temperature and humidity regulation of the grain pile. Summary of the Invention

[0004] To address the technical problems existing in the background art, the present invention provides a grain warehouse environment temperature and humidity control system and its control method.

[0005] The technical solution of this invention is as follows:

[0006] The present invention first provides a grain storage environment temperature and humidity control system, including a grain storage device and a temperature and humidity control device located outside and connected to it. The grain storage device can complete the grain storage work, and the temperature and humidity control device can be used to control the temperature and humidity of the grain storage environment inside the grain storage device.

[0007] Firstly, regarding the structure of the grain storage device, it includes a grain storage bin and a sealed bin cover at the top of the grain storage bin. Grain can be stored in the grain storage bin. The inside of the grain storage bin is also equipped with a temperature and humidity sensor that can detect the temperature and humidity of the grain storage environment.

[0008] Based on the above structure, as one of the core technical concepts of this invention, the grain storage silo is also equipped with a grain turning device that can work in conjunction with the temperature and humidity control device. Specifically, the grain turning device includes a cylindrical grain turning cylinder vertically located in the middle of the grain storage silo, with a grain outlet and a grain inlet respectively opened on the outer sides of the upper and lower ends of the grain turning cylinder. The grain turning device also includes a spiral blade vertically located inside the grain turning cylinder, with its lower end extending out of the bottom of the grain storage silo and connected to a drive motor. The action of the drive motor can drive the spiral blade to rotate, thereby continuously turning the grain at the bottom of the grain storage silo upwards. In conjunction with the action of the temperature and humidity control device, it can ensure the uniformity and consistency of temperature and humidity control. Even if the grain silo is relatively high, the drive motor can still easily drive the spiral blade to rotate, ensuring that the grain turning work can be carried out smoothly.

[0009] As another core technical concept of this invention, the temperature and humidity regulating device includes a regulating box, which has a condensing chamber and a heating chamber inside. The condensing chamber and heating chamber are respectively equipped with a condenser and a heater. The temperature and humidity regulating device also includes a return air duct connected to the condensing chamber and a supply air duct connected to the heating chamber. An air pump is installed on the return air duct and / or the supply air duct. The air pump enables airflow to be transported along the direction of "return air duct - condensing chamber - heating chamber - supply air duct," completing condensation and dehumidification in the condensing chamber and heating the dry, cold air in the heating chamber. Based on this structure, an air chamber is provided at the upper end of the grain turning drum. The temperature and humidity regulating device includes components vertically arranged outside the grain turning drum, with their upper and lower ends respectively connected to the air chamber and the lower part of the grain turning drum. The air supply pipe is connected to the air chamber, and the return air pipe is connected to the upper part of the grain storage device. The air inside the grain storage silo can flow from the return air pipe to the condensation chamber, where water vapor is condensed and removed. Subsequently, the dry, cold air can be heated by the heater and returned to the grain storage device through the air supply pipe, ensuring the dehumidification effect. The air chamber and air supply pipe allow the dry, hot air to be directly transported from the bottom to the top of the grain turning drum, and the transport operation is carried out simultaneously with the spiral conveying of the grain, further improving the drying and dehumidification effect of the grain. After the dehumidification work is completed, the temperature inside the grain storage silo can be lowered by turning off the heater, thus ensuring the humidity of the grain storage environment and regulating the temperature of the grain storage environment, significantly improving the temperature and humidity regulation effect.

[0010] In a preferred embodiment of the present invention, to ensure that the dry hot or cold air from the air supply pipe can flow smoothly into the grain turning drum through the air guide pipe, the grain turning drum includes a circular top plate at the top. A columnar air cylinder with an open top is vertically arranged on the upper side of the top plate. The upper end of the air guide pipe is connected to the air cylinder. An air inlet is opened in the middle of the sealed cover. The air supply pipe is connected to the air inlet. A columnar insert with an open bottom is vertically arranged on the lower side of the middle of the sealed cover corresponding to the air inlet. The upper end of the air cylinder is inserted and fixed to the lower end of the insert. Based on this structure, after the grain turning device and the air guide pipe are installed, only the sealed cover needs to be closed to realize the construction of the circulating air path. Even if the grain storage silo is used a second or more times, only the sealed cover needs to be opened and closed. There is no need to disassemble and reassemble other structures, which further improves the practicality of the adjustment system.

[0011] As described above, in a preferred embodiment of the grain storage environment temperature and humidity control system, in order to ensure that the grain on the outer ring of the bottom of the grain storage silo can also be effectively turned over by the grain turning device, thereby ensuring the adequacy of grain dehumidification, the bottom of the grain storage silo is a funnel shape with the lower end closed, and the grain turning cylinder is vertically arranged at the bottom of the funnel.

[0012] As a further preferred embodiment, in order to further ensure the turning effect of the grain and prevent the turned grain from being concentrated only around the perimeter of the grain turning drum, the lower outer ring of the grain turning drum is also provided with an umbrella-shaped guide skirt.

[0013] Preferably, to prevent the setting of the guide skirt from affecting the flow of grain above it and thus ensuring the uniformity of grain turning, the angle of inclination of the guide skirt relative to the horizontal plane is 18-25°, and the outer diameter is 1 / 3-1 / 2 of the inner diameter of the grain storage silo.

[0014] In the grain storage environment temperature and humidity control system described above, in order to ensure the effective operation of the grain turning device and the temperature and humidity control device, and thus ensure the drying and dehumidification effect of the grain under the action of hot air, the air guide pipe has at least three pipes arranged in a circular array around the outer ring of the grain turning cylinder.

[0015] To prevent interference between the condenser's condensation operation in the condenser chamber and the heater's heating operation in the heater chamber, and to ensure the condenser's dehumidification effect and the heater's heating effect, a heat insulation plate is provided between the condenser chamber and the heater chamber, and the heat insulation plate has an opening connecting the condenser chamber and the heater chamber.

[0016] To prevent the airflow in the grain storage silo from carrying grain into the return air duct, a barrier net is installed inside the end of the return air duct that connects to the grain storage device to block the grain.

[0017] The present invention also provides an adjustment method based on the above-described adjustment system. The adjustment system further includes a control device communicatively connected to the temperature and humidity adjustment device, the grain turning device, and the temperature and humidity sensor. The control device can control the operation of the temperature and humidity adjustment device, the grain turning device, and the temperature and humidity sensor. The adjustment method specifically includes the following steps:

[0018] S1. Temperature and humidity detection;

[0019] The temperature and humidity sensor works to transmit the measured temperature and humidity information of the grain storage silo to the control device.

[0020] S2. Regulation of the internal environment of grain storage warehouses;

[0021] The control device controls the operation of the grain turning device and the temperature and humidity regulating device based on the received temperature and humidity information, specifically in the following three situations:

[0022] A. If the temperature information is greater than or equal to the preset temperature threshold and the humidity information is less than the preset humidity threshold, the grain turning device, air pump and condenser will run for the first preset time.

[0023] B. If the humidity information is greater than or equal to the preset humidity threshold, regardless of the temperature information value, after the grain turning device, air pump, condenser and heater have been running for a second preset time, only the heater will be turned off, and the grain turning device, air pump and condenser will continue to run for a third preset time.

[0024] C. If both the temperature and humidity information are less than the preset temperature and humidity thresholds, the grain turning device and the temperature and humidity control device will not work.

[0025] In the above-described adjustment method, to ensure the quality of stored grain, the temperature threshold is 10-15℃ and the humidity threshold is 50%-70%RH.

[0026] The beneficial effects of this invention are as follows:

[0027] 1) The drive motor can rotate the spiral blades, which can continuously turn the grain at the bottom of the grain storage silo upwards. In conjunction with the operation of the temperature and humidity control device, the uniformity and consistency of temperature and humidity control can be ensured. Even if the grain silo is relatively high, the drive motor can still easily drive the spiral blades to rotate, ensuring that the grain turning work can be carried out smoothly.

[0028] 2) The air inside the grain storage silo can flow from the return air duct to the condensation chamber, and the water vapor is condensed and removed under the action of the condensation chamber. Then, the dry cold air can be heated by the heater and returned to the grain storage device from the supply air duct, thereby ensuring the dehumidification effect.

[0029] 3) The design of the air chamber and air guide pipe allows dry hot air to be directly transported from the bottom to the top of the grain turning drum, and the transport operation is carried out simultaneously with the spiral transport of the grain, which further improves the drying and dehumidification effect of the grain.

[0030] 4) After the dehumidification work is completed, the temperature inside the grain storage silo can be reduced by turning off the heater and using cold air. This ensures both the humidity of the grain storage environment and the temperature of the grain storage environment, significantly improving the temperature and humidity control effect. Attached Figure Description

[0031] The solutions and advantages of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention.

[0032] In the attached diagram:

[0033] Figure 1 This is a schematic diagram of the adjustment system in the embodiment;

[0034] Figure 2 This is a schematic diagram of the internal structure of the grain storage device in the embodiment;

[0035] Figure 3 This is a schematic diagram of the grain turning device in the embodiment;

[0036] Figure 4 This is a cross-sectional view of the grain turning device in the embodiment;

[0037] Figure 5 This is a schematic diagram of the internal structure of the adjustment mechanism in the embodiment;

[0038] The components represented by the various reference numerals in the diagram are:

[0039] 1. Grain storage device; 11. Grain storage bin; 12. Sealed bin cover; 2. Support frame; 3. Temperature and humidity control device; 31. Control mechanism; 311. Control box; 312. Condensation chamber; 313. Heating chamber; 314. Insulation plate; 315. Condenser; 316. Heater; 32. Air supply duct; 33. Return air duct; 34. Air pump; 35. Air guide pipe; 36. Barrier net; 4. Grain turning device; 41. Grain turning cylinder; 42. Spiral blade; 43. Drive motor; 44. Material guide skirt; 45. Air cylinder. Detailed Implementation

[0040] Exemplary embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings.

[0041] Example: This example first provides a grain warehouse environment temperature and humidity control system, see [link to example]. Figure 1The system includes a grain storage device 1 and a temperature and humidity control device 3 located on its outside and connected to it. The grain storage device 1 can be used to store grain, and the temperature and humidity control device 3 can be used to regulate the temperature and humidity of the grain storage environment inside the grain storage device 1. The structure of the control system (the above-mentioned grain storage environment temperature and humidity control system) will be described in detail below with reference to the accompanying drawings.

[0042] In this embodiment, the adjustment system also includes a support 2, combined with Figure 2 The grain storage device 1 includes a grain storage bin 11 mounted on a support 2 and a sealed bin cover 12 mounted on the upper end of the grain storage bin 11. Grain can be stored in the grain storage bin 11. The grain storage bin 11 is also equipped with a temperature and humidity sensor that can detect the temperature and humidity of the grain storage environment.

[0043] In this embodiment, as one of the core technical concepts of the present invention, the grain storage bin 11 is also provided with a grain turning device 4 that can work in conjunction with the temperature and humidity regulating device 3, and the grain turning device 4 can complete the turning of the grain inside the grain storage bin 11.

[0044] Combination Figure 3 and Figure 4 The grain turning device 4 includes a cylindrical grain turning cylinder 41 vertically arranged in the middle of the grain storage bin 11. The outer sides of the upper and lower ends of the grain turning cylinder 41 are respectively provided with a grain outlet and a grain inlet. Specifically, the grain turning cylinder 41 includes a circular top plate and a circular bottom plate with opposite upper and lower ends, and a cylindrical cylinder vertically arranged between the top plate and the bottom plate. The upper outer ring of the cylindrical cylinder is provided with a number of fixed ribs arranged circumferentially between it and the top plate, and the upper end of the cylindrical cylinder forms a grain outlet between it and the top plate. The lower outer ring of the cylindrical cylinder is provided with a number of fixed arc plates arranged circumferentially between it and the bottom plate, so that the lower end of the cylindrical cylinder forms a grain inlet between it and the bottom plate, and is fixed to the bottom of the grain storage bin 11 by the bottom plate.

[0045] Furthermore, the grain turning device 4 also includes a spiral blade 42 coaxially and vertically arranged inside the grain turning cylinder 41. The spiral blade 42 includes a main shaft, the upper end of which is rotatably connected to the top plate, and the lower end which extends out of the bottom plate. The end of the main shaft extending out of the bottom plate (i.e., the lower end) extends out of the bottom of the grain storage bin 11 and is connected to a drive motor 43. The part of the main shaft located inside the grain turning cylinder 41 is provided with a spiral blade. The outer diameter of the spiral blade is adapted to the inner diameter of the cylinder. The action of the drive motor 43 can drive the spiral blade 42 to rotate, thereby continuously turning the grain at the bottom of the grain storage bin 11 upwards. When transported to the upper end of the grain turning cylinder 41, it is discharged to all sides under the action of the top plate. In conjunction with the action of the temperature and humidity regulating device 3, the uniformity and consistency of temperature and humidity regulation are ensured. Even if the grain bin is relatively high, the drive motor 43 can still easily drive the spiral blade 42 to rotate, ensuring that the grain turning work can be carried out smoothly.

[0046] As a preferred embodiment of this invention, in order to ensure that the grain on the outer ring of the bottom of the grain storage bin 11 can also be effectively turned over by the grain turning device 4, thereby ensuring the adequacy of grain dehumidification, the bottom of the grain storage bin 11 is a funnel shape (i.e., an inverted frustum shape) with the bottom closed. The grain turning cylinder 41 is vertically fixed to the bottom of the funnel by the bottom plate, and the main shaft extends out of the bottom of the grain storage bin 11.

[0047] As a further preferred embodiment, in order to further ensure the turning effect of the grain and prevent the turned grain from being concentrated only around the grain turning cylinder 41, the lower outer ring of the grain turning cylinder 41 is also provided with an umbrella-shaped guide skirt 44.

[0048] Preferably, to prevent the material guide skirt 44 from affecting the flow of grain above it and thus ensuring the uniformity of grain turning, the angle of inclination of the material guide skirt 44 relative to the horizontal plane is 18-25°, preferably 20°, and the outer diameter is 1 / 3-1 / 2 of the inner diameter of the grain storage bin 11.

[0049] In this embodiment, the temperature and humidity regulating device 3 includes an regulating mechanism 31, which is connected to the grain turning device 4. As another core technical concept of this invention, combined with... Figure 5The regulating mechanism 31 includes a regulating box 311, which contains a condensing chamber 312 and a heating chamber 313. A condenser 315 and a heater 316 are respectively installed in the condensing chamber 312 and the heating chamber 313. The temperature and humidity regulating device 3 also includes a return air duct 33 connected to the condensing chamber 312 and a supply air duct 32 connected to the heating chamber 313. An air pump 34 is installed on the return air duct 33 and / or the supply air duct 32, allowing airflow to travel along the "return air duct 33 - condensing chamber" path. The grain is transported in the direction of "312-heating chamber 313-air supply pipe 32", and condensation and dehumidification are completed in the condensation chamber 312. The heating chamber 313 is used to heat the dry cold air. Based on the structure of the adjustment mechanism 31, an air chamber is reserved at the upper end of the grain turning drum 41. The temperature and humidity adjustment device 3 includes an air guide pipe 35 that is vertically arranged on the outside of the grain turning drum 41 and whose upper and lower ends are respectively connected to the air chamber and the lower part of the grain turning drum. The air supply pipe 32 is connected to the air chamber, and the return air pipe 33 is connected to the upper part of the grain storage device 1.

[0050] Based on the above structure, the air inside the grain storage silo 11 can flow from the return air duct 33 to the condensation chamber 312, and the water vapor is condensed and removed under the action of the condensation chamber 312. Subsequently, the dry cold air can be heated by the heater 316 and returned to the grain storage device 1 through the air supply duct 32 to ensure the dehumidification effect. The setting of the air chamber and the air guide pipe 35 allows the dry hot air to be directly transported from the bottom to the top of the grain turning drum 41, and the transport work is carried out simultaneously with the spiral transport of the grain, which further improves the drying and dehumidification effect of the grain. After the dehumidification work is completed, by turning off the heater 316, the temperature inside the grain storage silo 11 can be reduced by the cold air, which not only ensures the humidity of the grain storage environment, but also regulates the temperature of the grain storage environment, which significantly improves the temperature and humidity regulation effect.

[0051] To prevent interference between the condenser 315 in the condensing chamber 312 and the heater 316 in the heating chamber 313, and to ensure the condensing and dehumidifying effect of the condenser 315 and the heating effect of the heater 316, a heat insulation plate 314 is provided between the condensing chamber 312 and the heating chamber 313. The heat insulation plate 314 has an opening that connects the condensing chamber 312 and the heating chamber 313.

[0052] As a preferred embodiment of this invention, to ensure that the dry hot or cold air from the air supply pipe 32 can flow smoothly from the air guide pipe 35 into the grain turning drum 41, the grain turning drum 41 further includes a columnar air cylinder 45 vertically arranged on the upper side of the top plate with an open top. The air cylinder 45 and the top plate form an air chamber. The upper end of the air guide pipe 35 is connected to the air cylinder 45. An air inlet is provided in the middle of the sealed cover 12, and the air supply pipe 32 is connected to the air inlet. A columnar insert with an open bottom is vertically arranged on the lower side of the middle of the sealed cover 12 corresponding to the position of the air inlet. The upper end of the air cylinder 45 is inserted and fixed to the lower end of the insert. Based on this structure, after the grain turning device 4 and the air guide pipe 35 are installed, only the sealed cover 12 needs to be closed to realize the construction of the circulating air path. Even if the grain storage silo 11 is used a second or more times, only the sealed cover 12 needs to be opened and closed, without the need to disassemble and reassemble other structures, further improving the practicality of the adjustment system.

[0053] As a further preferred embodiment, in order to ensure the effective operation of the grain turning device 4 and the temperature and humidity regulating device 3, and thus ensure the drying and dehumidification effect of the grain under the action of hot air, the air guide pipe 35 is arranged in a circumferential array around the outer ring of the grain turning cylinder 41 with at least three pipes, preferably four pipes.

[0054] Preferably, in order to prevent the airflow in the grain storage silo 11 from carrying the grain into the return air duct 33, the return air duct 33 is provided with a barrier net 36 at the end connected to the grain storage device 1 to block the grain.

[0055] This embodiment also provides an adjustment method. Based on the above-described adjustment system, the adjustment system further includes a control device that is communicatively connected to the temperature and humidity adjustment device 3, the grain turning device 4, and the temperature and humidity sensor. The control device can be a PLC controller, a microcomputer, or other control structure. No specific restrictions are placed on its type here. The operation of the temperature and humidity adjustment device 3, the grain turning device 4, and the temperature and humidity sensor can be controlled through the control device.

[0056] Furthermore, based on the above structure, the adjustment method specifically includes the following steps:

[0057] S1. Temperature and humidity detection;

[0058] The temperature and humidity sensor works to transmit the measured temperature and humidity information of the internal environment of the grain storage silo 11 to the control device.

[0059] S2, Regulation of the internal environment of grain storage silo 11;

[0060] The control device controls the operation of the grain turning device 4 and the temperature and humidity regulating device 3 based on the received temperature and humidity information, specifically in the following three ways:

[0061] A. If the temperature information is greater than or equal to the preset temperature threshold and the humidity information is less than the preset humidity threshold, the grain turning device 4, the air pump 34 and the condenser 315 will run for the first preset time.

[0062] Under these conditions, it indicates that the temperature inside the grain storage bin 11 is relatively high and the humidity meets the storage conditions for grain. At this time, by blowing dry and cold air into the grain turning drum 41, in conjunction with the grain turning action of the grain turning device 4, the cooling work is completed.

[0063] The first preset time is set in advance according to the type of grain stored, and its value is not specifically limited here;

[0064] B. If the humidity information is greater than or equal to the preset humidity threshold, regardless of the temperature information value, after the grain turning device 4, air pump 34, condenser 315 and heater 316 have been running for a second preset time, only heater 316 will be turned off, and the grain turning device 4, air pump 34 and condenser 315 will continue to run for a third preset time.

[0065] Under these conditions, it indicates that the humidity inside the grain storage silo 11 is relatively high. At this time, by blowing dry hot air into the grain turning drum 41 in advance, in conjunction with the grain turning action of the grain turning device 4, the grain drying and dehumidification work is completed. After the second preset time, by blowing dry cold air into the grain turning drum 41 in conjunction with the grain turning action of the grain turning device 4, the cooling work is completed.

[0066] The second and third preset times are preset according to the type of grain stored, and their values ​​are not specifically limited here;

[0067] C. If both the temperature and humidity information are less than the preset temperature and humidity thresholds, then neither the grain turning device 4 nor the temperature and humidity regulating device 3 will work.

[0068] Under these conditions, it is evident that the environment inside the grain storage silo 11 meets the requirements for grain storage.

[0069] As a preferred embodiment of this invention, in order to ensure the quality of stored grain, the temperature threshold is 10-15℃, preferably 12℃, and the humidity threshold is 50%-70%RH, preferably 50%RH, so that the time adjustment system can meet the storage conditions of grain for various purposes.

Claims

1. A grain storage environment temperature and humidity control system, characterized in that, It includes a grain storage device (1) and a temperature and humidity control device (3) located on its outside and connected to it; The grain storage device (1) includes a grain storage bin (11) and a sealed bin cover (12) at its upper end. The grain storage bin (11) is equipped with a temperature and humidity sensor and a grain turning device (4) that can work in conjunction with the temperature and humidity regulating device (3). The grain turning device (4) includes a cylindrical grain turning cylinder (41) vertically arranged in the middle of the grain storage bin (11), and the outer sides of the upper and lower ends of the grain turning cylinder (41) are respectively provided with a grain outlet and a grain inlet. The grain turning device (4) also includes a spiral blade (42) vertically arranged in the grain turning cylinder (41), the lower end of which extends out of the bottom of the grain storage bin (11) and is connected to a drive motor (43). The temperature and humidity control device (3) includes a control box (311), which has a condensing chamber (312) and a heating chamber (313) inside. The condensing chamber (312) and the heating chamber (313) are respectively equipped with a condenser (315) and a heater (316). The temperature and humidity control device (3) also includes a return air pipe (33) connected to the condensing chamber (312) and a supply air pipe (32) connected to the heating chamber (313). An air pump (34) is provided on the return air pipe (33) and / or the supply air pipe (32). The upper end of the grain turning drum (41) is provided with an air chamber. The temperature and humidity regulating device (3) also includes an air guide pipe (35) which is vertically arranged on the outside of the grain turning drum (41) and whose upper and lower ends are respectively connected to the air chamber and the lower part of the grain turning drum (41). The grain turning cylinder (41) also includes a columnar air cylinder (45) vertically arranged on the upper side of the top plate and open at the upper end. The air cylinder (45) and the top plate form an air chamber. The upper end of the air guide pipe (35) is connected to the air cylinder (45). An air inlet is opened in the middle of the sealed cover (12). The air supply pipe (32) is connected to the air inlet. A columnar insert with an open lower end is vertically arranged on the lower side of the middle of the sealed cover (12) corresponding to the position of the air inlet. The upper end of the air cylinder (45) is inserted and fixed to the lower end of the insert. After the grain turning device (4) and the air guide pipe (35) are installed, the sealed cover (12) only needs to be closed to realize the construction of the circulating air path. The air supply pipe (32) is connected to the air chamber, and the return air pipe (33) is connected to the upper part of the grain storage device (1). Dry hot air can be directly transported from the lower part of the grain turning drum (41) to the upper part, and the transport work is carried out simultaneously with the spiral transport work of the grain.

2. The grain storage environment temperature and humidity control system according to claim 1, characterized in that, The bottom of the grain storage silo (11) is funnel-shaped.

3. The grain storage environment temperature and humidity control system according to claim 2, characterized in that, The lower outer ring of the grain turning drum (41) is also provided with an umbrella-shaped material guiding skirt (44).

4. The grain storage environment temperature and humidity control system according to claim 3, characterized in that, The angle of inclination of the guide skirt (44) relative to the horizontal plane is 18-25°, and its outer diameter is 1 / 3-1 / 2 of the inner diameter of the grain storage silo (11).

5. A grain storage environment temperature and humidity control system according to claim 1, characterized in that, The air guide pipe (35) has at least three pipes arranged in a circular array around the outer ring of the grain hopper (41).

6. The grain storage environment temperature and humidity control system according to claim 1, characterized in that, A heat insulation plate (314) is provided between the condensing chamber (312) and the heating chamber (313), and the heat insulation plate (314) has an opening that connects the condensing chamber (312) and the heating chamber (313).

7. The grain storage environment temperature and humidity control system and method according to claim 1, characterized in that, The return air duct (33) is connected to the grain storage device (1) at one end, and a barrier net (36) is provided inside to block the grain.

8. A method for regulating temperature and humidity in a grain storage environment, based on any one of claims 1-7, characterized in that, The adjustment system also includes a control device that is communicatively connected to the temperature and humidity adjustment device (3), the grain turning device (4), and the temperature and humidity sensor. The adjustment method specifically includes the following steps: S1. Temperature and humidity detection; The temperature and humidity sensor works to transmit the measured temperature and humidity information of the internal environment of the grain storage silo (11) to the control device; S2, Regulation of the internal environment of the grain storage warehouse (11); The control device controls the operation of the grain turning device (4) and the temperature and humidity regulating device (3) based on the received temperature and humidity information, specifically in the following three situations: A. If the temperature information is greater than or equal to the preset temperature threshold and the humidity information is less than the preset humidity threshold, then the grain turning device (4), the air pump (34) and the condenser (315) will run for the first preset time. B. If the humidity information is greater than or equal to the preset humidity threshold, regardless of the temperature information value, the grain turning device (4), air pump (34), condenser (315) and heater (316) will run together for a second preset time, and then only the heater (316) will be turned off. The grain turning device (4), air pump (34) and condenser (315) will continue to run for a third preset time. C. If both the temperature and humidity information are less than the preset temperature and humidity thresholds, then the grain turning device (4) and the temperature and humidity regulating device (3) will not work.

9. The adjustment method according to claim 8, characterized in that, The temperature threshold is 10-15℃, and the humidity threshold is 50%-70%RH.

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