Movable grain drying device and emergency drying method

Abstract

The invention discloses a movable drying device and a grain emergency drying method, and belongs to the field of grain drying. The drying device comprises a vehicle body, a drying tower base, a precleaner and a hot blast stove are arranged on the upper surface of the vehicle body, the drying tower base is located in the middle of the upper surface of the vehicle body, the precleaner is arranged on one side of the drying tower base, and the hot blast stove is arranged on the other side of the drying tower base. The tail end of the drying tower is rotatably arranged on the drying tower base, elevators are arranged on the two sides of the drying tower, temporary storage hoppers are arranged on the two sides of the elevators and rotatably fixed to the vehicle body, one end of the air duct is connected with the drying tower, and the other end of the air duct is connected with the hot blast stove and the air cooler. Modularized and light design is carried out, the drying tower is structurally designed in a folding mode, vertical unfolding is carried out in the production process, toppling and lying are carried out in the walking process, state switching is automatically carried out through a hydraulic device, and large-scale drying and rapid movement can be taken into account in combination with an efficient drying method.

Description

Technical Field

[0001] The present invention relates to the field of grain drying, and in particular to a movable grain drying device and an emergency drying method. Background Art

[0002] China is a major grain-producing country, but there is still insufficient capacity in grain drying in production areas, especially in emergency rescue drying operations. During the concentrated grain harvest period, large-scale continuous rainfall weather processes frequently occur. Grain crops germinate and mildew due to the inability to be dried in time, which not only affects the income of farmers, but also poses challenges to grain supply and quality safety. It is extremely urgent to develop mobile drying equipment as an emergency supplement to fixed grain drying equipment.

[0003] The existing mobile dryers have insufficient emergency rescue drying capacity, which is mainly reflected in the following three aspects: First, the structural design is unreasonable, with problems such as being too large or too small in volume and difficult to quickly transfer over long distances; second, the heat source energy recovery is insufficient and the drying process is lacking, resulting in problems such as high drying energy consumption and poor drying quality; third, the time-consuming for loading and unloading materials is serious and the temporary storage space is insufficient, resulting in problems such as weak operation ability. Summary of the Invention

[0004] To solve the deficiencies in the prior art, the present invention provides a movable grain drying device and an emergency drying method, which solve the problems of difficult long-distance rapid transfer, high drying energy consumption, and weak operation ability of existing mobile dryers.

[0005] The first aspect of the present invention provides a movable grain drying device, including: a vehicle body, an initial cleaning sieve, a drying tower, a drying tower base, a hot blast stove, a temporary storage hopper, a hoist, a cooling fan, and an air duct; the upper surface of the vehicle body is provided with a drying tower base, an initial cleaning sieve, and a hot blast stove. The drying tower base is located in the middle of the upper surface of the vehicle body. An initial cleaning sieve is arranged on one side of the drying tower base, which is used for the first impurity removal of materials. A hot blast stove is arranged on the other side of the drying tower base. A cooling fan is arranged at one end of the drying tower base, which is used for cooling the materials and dehumidifying again. The end of the drying tower is rotatably arranged on the drying tower base. Hoists are arranged on both sides of the drying tower, and temporary storage hoppers are arranged on both sides of the hoists. The temporary storage hoppers are rotatably fixed on the vehicle body. One end of the air duct is connected to the drying tower, and the other end is respectively connected to the hot blast stove and the cooling fan for gas transmission; the drying tower includes: a top component, a top flattening component, a first-stage high-temperature dehumidification area, a second-stage medium-temperature drying area, a third-stage air-cooling temperature-returning area, and a housing; the first-stage high-temperature dehumidification area, the second-stage medium-temperature drying area, and the third-stage air-cooling temperature-returning area are arranged in the housing from top to bottom; the top component is arranged at the top of the drying tower, and a top flattening component is arranged on the top component.

[0006] According to the described mobile drying device for grains, the vehicle body includes: a front support frame of the vehicle, a vehicle head, a chassis seat, and wheels; the vehicle head is fixedly arranged at the front end of the vehicle body, the front support frame of the vehicle is vertically arranged at the front end of the vehicle head for supporting the drying tower, the chassis seat is horizontally arranged at the rear end of the vehicle head, and wheels are arranged below the chassis seat; a hydraulic rod is also fixedly installed on the upper surface of the vehicle body for controlling the rotation of the drying tower; one end of the hydraulic rod is arranged on the upper surface of the chassis seat of the vehicle body and near the position of the vehicle head, and the other end of the hydraulic rod is arranged at the middle position of the drying tower.

[0007] According to the described mobile drying device for grains, the first high-temperature dehumidification zone includes an air outlet component and a hot air component of the first high-temperature dehumidification zone arranged up and down, as well as the internal space enclosed by the air outlet component and the hot air component of the first high-temperature dehumidification zone; the second medium-temperature drying zone includes an air outlet component and a hot air component of the second medium-temperature drying zone arranged up and down, as well as the internal space enclosed by the air outlet component and the hot air component of the second medium-temperature drying zone; the third air-cooling and temperature-returning zone includes an air inlet component of the third air-cooling and temperature-returning zone and the internal space enclosed by the air inlet component of the third air-cooling and temperature-returning zone and the top of the drying tower base; a first grain discharging cylinder is arranged below the hot air component of the first high-temperature dehumidification zone, and a second grain discharging cylinder is arranged below the hot air component of the second medium-temperature drying zone.

[0008] According to the described mobile drying device for grains, the elevator includes: a feeding elevator and a discharging elevator; the discharging port of the feeding elevator is equipped with a decontamination motor for secondary decontamination of materials; a feeding elevator motor is arranged at the top of the feeding elevator for lifting materials, and a feeding elevator guardrail is arranged outside the feeding elevator; a discharging elevator motor is arranged at the top of the discharging elevator.

[0009] According to the described mobile drying device for grains, the top component includes: a suction fan, a top cover, and a pipeline; the pipeline is connected to the feeding elevator, the top cover is arranged below the pipeline and is in communication with the pipeline, and a suction fan is arranged on the pipeline; the top flattening component includes: a motor and a material flattening device, the motor is installed above the exact middle of the top cover, the motor shaft passes through the pipeline and extends into the interior of the top cover, the material flattening device is arranged below the top cover and is connected to the motor shaft, the bottom of the top cover is in contact with the material flattening device, and the material flattening device is a uniformly distributed sheet-shaped rotating body.

[0010] According to the described mobile drying device for grains, the hot air components in the first-stage high-temperature dehumidification area and the second-stage medium-temperature drying area both include: a triangular box, a movable material distribution plate, a cylinder, and a frame; the movable material distribution plate and the triangular box are installed at equal intervals at the bottom of the frame. A first discharge hole is opened on the movable material distribution plate, and corresponding second discharge holes are opened at the upper and lower ends of the frame. One end of the movable material distribution plate is connected to the cylinder and can perform reciprocating movements in the horizontal direction to control the falling of materials; the middle of the triangular box is hollowed out, and a first ventilation hole is provided on the top surface. A corresponding second ventilation hole is opened on the frame. The side end of the triangular box is connected to the air duct to convey the gas input from the air duct into the drying tower.

[0011] According to the described mobile drying device for grains, the drying tower base includes: a support, a grain discharging component, a base hopper, and a conveyor belt; the support is fixedly connected to the vehicle body by bolts to support the drying tower; the grain discharging component is located at the top of the drying tower base, the base hopper is located directly below the grain discharging component, the conveyor belt is located at the outlet of the base hopper, the conveyor belt can rotate forward and backward, and both ends of the conveyor belt are arranged below the material inlets of the inlet elevator and the outlet elevator.

[0012] According to the described mobile drying device for grains, the hot blast stove includes: a combustion chamber, a heat exchanger, a combustion chamber air duct, a combustion chamber air damper, a hot air damper, an operation panel, and a burner fan; the combustion chamber is arranged at the central position inside the hot blast stove, and a heat exchanger area is arranged around the combustion chamber. There are gaps on the front and rear sides of the heat exchanger area, and a heat exchanger is arranged inside the heat exchanger area. The combustion chamber air duct includes: a first-stage combustion chamber air duct, a second-stage combustion chamber air duct, and a third-stage combustion chamber air duct. The first-stage combustion chamber air duct is the front gap of the heat exchanger area, the third-stage combustion chamber air duct is the rear gap of the heat exchanger area, and the second-stage combustion chamber air duct is arranged circumferentially between the combustion chamber and the heat exchanger area; the combustion chamber, the combustion chamber air duct, and the heat exchanger are wrapped by the hot blast stove housing; the combustion chamber air damper is arranged at the bottom of the hot blast stove housing close to the drying tower side and is connected to the third-stage combustion chamber air duct. The hot air damper is arranged at the top of the hot blast stove housing far from the drying tower, the burner fan is connected to the first-stage combustion chamber air duct, and an operation panel is arranged on the outer side wall of the hot blast stove housing.

[0013] According to the described mobile drying device for grains, the hot blast stove further includes: a hot blast stove housing, a hot air blower, and a chimney hot air blower; the hot air blower is located at the top of the hot blast stove housing and is connected to the hot air damper. The chimney hot air blower is located on one side of the top of the hot blast stove housing and is connected to the combustion chamber air damper.

[0014] According to the described movable grain drying device, the air duct includes: a first-stage high-temperature dehumidifying air duct, a second-stage medium-temperature drying air duct, and a third-stage air-cooling temperature-returning air duct; the upper end of the first-stage high-temperature dehumidifying air duct is connected to the hot air assembly in the first-stage high-temperature dehumidifying area, and the lower end is connected to the chimney hot air fan of the hot air furnace; the upper end of the second-stage medium-temperature drying air duct is connected to the hot air assembly in the second-stage medium-temperature drying area, and the lower end is connected to the hot air fan of the hot air furnace; the upper end of the third-stage air-cooling temperature-returning air duct is connected to the air inlet assembly in the third-stage air-cooling temperature-returning area, and the lower end is connected to the cold air fan.

[0015] According to the described movable grain drying device, a soft spiral feeding assembly is arranged at the top of the initial cleaning sieve. The soft spiral feeding assembly is connected to one end of a hose, and the other end of the hose is placed in the temporary storage hopper. An output port is arranged at the bottom of the initial cleaning sieve, and the output port is connected to the feeding elevator.

[0016] According to the described movable grain drying device, the drying device further includes: a segmented variable temperature control system; the segmented variable temperature control system is used for collecting the whole machine information and logical control, including: a first-stage high-temperature dehumidifying area high-level material level indicator, a first-stage high-temperature dehumidifying area low-level material level indicator, and a first-stage high-temperature dehumidifying area temperature and humidity sensor arranged in the first-stage high-temperature dehumidifying area, and the first-stage high-temperature dehumidifying area high-level material level indicator is arranged above the first-stage high-temperature dehumidifying area low-level material level indicator; a first-stage high-temperature dehumidifying area inlet temperature sensor arranged in the first-stage high-temperature dehumidifying air duct; a second-stage medium-temperature drying area high-level material level indicator, a second-stage medium-temperature drying area low-level material level indicator, and a second-stage medium-temperature drying area temperature and humidity sensor arranged in the second-stage medium-temperature drying area, and the second-stage medium-temperature drying area high-level material level indicator is arranged above the second-stage medium-temperature drying area low-level material level indicator; a second-stage medium-temperature drying area inlet temperature sensor arranged in the second-stage medium-temperature drying air duct; a third-stage air-cooling temperature-returning area high-level material level indicator, a third-stage air-cooling temperature-returning area low-level material level indicator, and a third-stage air-cooling temperature-returning area temperature and humidity sensor arranged in the third-stage air-cooling temperature-returning area, and the third-stage air-cooling temperature-returning area high-level material level indicator is arranged above the third-stage air-cooling temperature-returning area low-level material level indicator; a base hopper material level indicator arranged at the outlet of the base hopper.

[0017] Another aspect of the present invention also provides a method for emergency grain drying, based on the described movable grain drying device, including the following steps:

[0018] Fast heating-up dehumidifying and drying method: The first discharging cylinder is closed, the material falling channel is closed, the material to be dried is lifted to the drying tower by the feeding elevator, and the dried material is evenly dropped into the first-stage high-temperature dehumidifying area through the flattening assembly at the top of the tower, and it is judged whether the stock and humidity of the material to be dried in the first-stage high-temperature dehumidifying area reach the threshold; if the stock and humidity reach the threshold, the material to be dried is discharged into the second-stage medium-temperature drying area, otherwise the above operation is continued;

[0019] Slow-speed medium-temperature quality-keeping drying method: the material falls into the second-stage medium-temperature drying area, and the second-row grain air cylinder is closed, and it is determined whether the inventory and temperature and humidity of the material in the second-stage medium-temperature drying area reach the threshold; if the inventory and temperature and humidity reach the threshold, the material is discharged into the third-stage air-cooling and temperature-returning area, otherwise the above operation is continued;

[0020] High-speed air cooling and reheating drying method: the material falls into the three-stage air cooling and reheating zone, and the grain discharge component is closed, and it is judged whether the stock and temperature and humidity of the material in the three-stage air cooling and reheating zone reach the threshold; if the stock and temperature and humidity reach the threshold, the material is discharged into the base bucket, otherwise the above operation is continued;

[0021] Abnormal or normal material output method: The material falls into the base bucket and falls onto the conveyor belt through the bottom outlet. At this time, it is determined whether the material on the conveyor belt is abnormal;

[0022] If the material on the conveyor belt is abnormal, the entire conveyor belt will be turned to transport the material to the temporary storage hopper on one side of the feed elevator to achieve cyclic drying of the material;

[0023] If there is no abnormality in the material on the conveyor belt, the material will be transported to the temporary storage hopper on one side of the discharge elevator through the conveyor belt for storage;

[0024] After the feed elevator has lifted all the materials to be dried, the timed drying and discharging program is started to discharge the remaining materials in the drying tower one by one for drying.

[0025] According to the emergency grain drying method, the rapid heating and dehumidification drying method further comprises the following steps:

[0026] The material continuously enters a high-temperature dehumidification zone from the top of the drying tower, and determines whether the material to be dried triggers a high-level material level device in the high-temperature dehumidification zone;

[0027] If the material to be dried does not trigger the high-level material level indicator in the high-temperature dehumidification zone, the feed elevator will continue to transport the material to be dried to the drying tower;

[0028] If the material to be dried triggers the high-level device of the high-temperature dehumidification zone, the feed elevator stops feeding, and the high-temperature dehumidification zone is full at this time;

[0029] The chimney hot air blower starts working, and the temperature of the gas in a high-temperature dehumidification zone inlet temperature sensor is used to detect the temperature of the gas in a high-temperature dehumidification duct. When the temperature reaches the threshold, the airflow reaching the wind pressure threshold is blown into the hot air component of a high-temperature dehumidification zone to start high-temperature dehumidification and drying of the material. The temperature and humidity sensor of a high-temperature dehumidification zone is used to determine whether the humidity of the material to be dried reaches the threshold.

[0030] If the humidity of the material to be dried does not reach the threshold, the air flow continues to be delivered to the hot air component of a high-temperature dehumidification zone through the chimney hot air blower;

[0031] If the humidity of the material to be dried reaches the threshold value, the first grain discharging cylinder is opened to discharge the grain, and the material is discharged into the second-stage medium-temperature drying area;

[0032] Judge whether the material to be dried triggers the low-level material level sensor in the first-stage high-temperature dehumidification area;

[0033] If the dried material does not trigger the low-level material level sensor in the first-stage high-temperature dehumidification area, continue to keep the first grain discharging cylinder open and discharge the material into the second-stage medium-temperature drying area;

[0034] If the dried material triggers the low-level material level sensor in the first-stage high-temperature dehumidification area, stop discharging the grain and repeat the above steps.

[0035] According to the described method for emergency drying of grains, the slow-speed medium-temperature quality-preserving drying method further includes the following steps:

[0036] The hot air blower starts to work, and the temperature of the gas in the second-stage medium-temperature drying air duct is detected by the inlet temperature sensor in the second-stage medium-temperature drying area. When the temperature reaches the threshold value, the air flow reaching the air pressure threshold value is blown into the hot air component in the second-stage medium-temperature drying area, and the medium-temperature quality-preserving drying of the material is started, and the temperature and humidity of the material are judged by the temperature and humidity sensor in the second-stage medium-temperature drying area whether they reach the threshold value;

[0037] If the temperature and humidity of the material do not reach the threshold value, continue to convey the air flow to the hot air component in the second-stage medium-temperature drying area through the hot air blower;

[0038] If the temperature and humidity of the material reach the threshold value, the hot air blower stops working;

[0039] Judge whether the material to be dried triggers the high-level material level sensor in the second-stage medium-temperature drying area;

[0040] The material continuously falls from the first grain discharging cylinder. If the material triggers the high-level material level sensor in the second-stage medium-temperature drying area, at this time, the second-stage medium-temperature drying area is in a full-bin state, and the second grain discharging cylinder is opened to discharge the grain;

[0041] If the material does not trigger the high-level material level sensor in the second-stage medium-temperature drying area, continue to keep the second grain discharging cylinder closed;

[0042] Judge whether the material to be dried triggers the low-level material level sensor in the second-stage medium-temperature drying area;

[0043] If the material does not trigger the low-level material level sensor in the second-stage medium-temperature drying area, continue to keep the second grain discharging cylinder open and discharge the material into the third-stage air-cooling temperature-returning area;

[0044] If the material triggers the low-level material level sensor in the second-stage medium-temperature drying area, stop discharging the grain and repeat the above steps.

[0045] According to the described method for emergency drying of grains, the high-speed air-cooling and temperature-returning drying method further includes the following steps:

[0046] The cold air blower starts to work, blowing normal-temperature cold air into the air inlet assembly of the three-stage air-cooling and temperature-returning zone, and starts to quickly air-cool and temperature-return the material for drying. The temperature and humidity sensor in the three-stage air-cooling and temperature-returning zone is used to judge whether the temperature and humidity of the material reach the threshold value;

[0047] If the temperature and humidity of the material do not reach the threshold value, continue to convey normal-temperature cold air to the air inlet assembly of the three-stage air-cooling and temperature-returning zone through the cold air blower;

[0048] If the temperature and humidity of the material reach the threshold value, the cold air blower stops working;

[0049] Judge whether the material to be dried triggers the high-level material level detector in the three-stage air-cooling and temperature-returning zone;

[0050] The material continuously falls from the second grain discharging cylinder. If the material triggers the high-level material level detector in the three-stage air-cooling and temperature-returning zone, at this time, the three-stage air-cooling and temperature-returning zone is in a full bin state, and the grain discharging assembly is opened for grain discharging;

[0051] If the material does not trigger the high-level material level detector in the three-stage air-cooling and temperature-returning zone, it closes and repeats the above steps.

[0052] Compared with the prior art, the beneficial effects of the present invention at least include:

[0053] (1), This application is designed modularly and portably. The drying tower is designed in a foldable structure. It is vertically unfolded during production and lies flat when moving. The state switching is automatically carried out by a hydraulic device. Combined with an efficient drying method, it can take into account large-scale drying and rapid movement;

[0054] (2), This application has a dual-channel design for the hot blast stove air duct. High-energy hot air is introduced into the first-stage dehumidification zone to quickly raise the temperature of the material and quickly dehydrate it; medium-temperature hot air is introduced into the second-stage drying zone to re-dry the material at medium temperature and reduce the moisture content; at the same time, outdoor normal-temperature gas is introduced into the third-stage temperature-returning zone to cool and air-dry the material and dehydrate it again; overall, it realizes a drying method of rapid temperature rise and dehumidification, slow-speed medium-temperature quality preservation, and high-speed air-cooling and temperature-returning, improving the drying process level while reducing energy consumption.

[0055] (3), This application has a dual-channel symmetric design for the elevator to achieve synchronous feeding and discharging; the material temporary storage hopper is designed with an enlarged capacity, greatly improving the material throughput capacity;

[0056] (4) First, efficiently utilize the high-temperature gas in the combustion chamber of the hot blast stove to mix with the introduced normal-temperature air to form high-temperature gas, which enters the first-stage high-temperature dehumidification area to rapidly heat and dehumidify the material. Secondly, the medium-temperature gas heated by the hot blast stove enters the second-stage medium-temperature drying area to conduct secondary dehumidification and drying of the material. Finally, introduce normal-temperature air into the third-stage air-cooling and temperature-returning area to conduct tertiary air drying and dehumidification of the material. Through the organic combination of the three-stage hot and cold gases, a rapid dehydration method of high-temperature dehumidification, medium-temperature drying, and normal-temperature cooling and air drying is formed, and a segmented variable-temperature control technology is supported to ensure the smooth realization of the emergency drying process. Description of the Drawings

[0057] Figure 1 is the side view of the mobile drying device of the present application in the traveling state;

[0058] Figure 2 is the side view of the mobile drying device of the present application in the preparation state;

[0059] Figure 3 is the side view of the mobile drying device of the present application in the production state;

[0060] Figure 4 is the rear view of the mobile drying device of the present application in the traveling state;

[0061] Figure 5 is the rear view of the mobile drying device of the present application in the preparation state;

[0062] Figure 6 is the rear view of the mobile drying device of the present application in the production state;

[0063] Figure 7 is the front view of the drying tower of the present application;

[0064] Figure 8 is the front view of the base of the drying tower of the present application;

[0065] Figure 9 is the hot air component diagram of the present application;

[0066] Figure 10 is the energy conversion diagram of the hot blast stove of the present application;

[0067] Figure 11 is the sensor layout and air flow direction diagram of the drying tower of the present application;

[0068] Figure 12 is the flow chart of the drying method of the present application;

[0069] Figure 13 is the flow chart of the rapid temperature rise and dehumidification method of the present application;

[0070] Figure 14 is the flow chart of the slow-speed medium-temperature quality preservation method of the present application;

[0071] Figure 15 It is the flow chart of the high-speed air-cooling and temperature-returning method of this application;

[0072] In the figure: 1. Vehicle body; 11. Front vehicle support; 12. Vehicle head; 13. Chassis seat; 14. Wheels;

[0073] 2. Hydraulic rod;

[0074] 3. Initial cleaning sieve; 31. Soft spiral feeding component; 32. Hose;

[0075] 4. Drying tower;

[0076] 41. Drying tower base; 411. Support; 412. Grain discharging component; 413. Base hopper; 414. Conveyor belt;

[0077] 42. Top component; 421. Air suction fan; 422. Top cover; 423. Pipeline;

[0078] 43. Top leveling component; 431. Motor; 432. Material leveler; 433. Motor shaft;

[0079] 44. Air outlet component for the first-stage high-temperature dehumidification area;

[0080] 45. Hot air component for the first-stage high-temperature dehumidification area; 451. Triangular box; 452. Movable baffle; 453. Cylinder; 454. Frame;

[0081] 455. First grain discharging cylinder; 477. Second grain discharging cylinder;

[0082] 46. Air outlet component for the second-stage medium-temperature drying area;

[0083] 47. Hot air component for the second-stage medium-temperature drying area;

[0084] 48. Air inlet component for the third-stage air-cooling and temperature-returning area;

[0085] 49. Shell;

[0086] 5. Hot blast stove; 51. Hot blast stove shell; 52. Combustion chamber; 53. Heat exchanger; 54. Hot air blower; 55. Chimney hot air blower; 56. Combustion chamber air duct; 57. Combustion chamber air damper; 58. Hot air damper; 59. Operation panel; 510. Combustion head blower;

[0087] 6. Temporary storage hopper; 61. Fence board;

[0088] 7. Elevator; 71. Inlet elevator; 711. Inlet elevator guardrail; 712. Inlet elevator motor; 72. Outlet elevator; 721. Outlet elevator motor;

[0089] 8. Cooling fan;

[0090] 9. Air duct; 91. First-stage high-temperature dehumidifying air duct; 92. Second-stage medium-temperature drying air duct; 93. Third-stage air-cooling temperature-returning air duct;

[0091] 101. High-level material level indicator in the first-stage high-temperature dehumidifying area; 102. Low-level material level indicator in the first-stage high-temperature dehumidifying area; 103. Inlet temperature sensor in the first-stage high-temperature dehumidifying area; 104. Temperature and humidity sensor in the first-stage high-temperature dehumidifying area; 105. High-level material level indicator in the second-stage medium-temperature drying area; 106. Low-level material level indicator in the second-stage medium-temperature drying area; 107. Inlet temperature sensor in the second-stage medium-temperature drying area; 108. Temperature and humidity sensor in the second-stage medium-temperature drying area; 109. High-level material level indicator in the third-stage air-cooling temperature-returning area; 1010. Low-level material level indicator in the third-stage air-cooling temperature-returning area; 1011. Temperature and humidity sensor in the third-stage air-cooling temperature-returning area; 1012. Base hopper material level indicator. Detailed implementation manner

[0092] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described in this application are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the spirit of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0093] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "front", "rear", "inner", "outer", "right", "left", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0094] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0095] Define the horizontal direction as the direction from the head to the tail of the vehicle, and the vertical direction as the direction perpendicular to the surface of the vehicle body.

[0096] The present invention solves the problems of the existing mobile dryer, such as difficult long-distance rapid transfer, high drying energy consumption, and weak operation ability, and can be used as an emergency supplement for fixed grain drying equipment.

[0097] The present invention organically combines high-temperature gas, combustion gas and normal-temperature cold air of the hot blast stove, and is equipped with a segmented variable-temperature control technology to form an emergency drying process of high-temperature dehumidification, medium-temperature drying and air-cooled temperature recovery.

[0098] Embodiment 1:

[0099] Please refer to Figure 1-11 , this embodiment provides a movable drying device for grains, including: vehicle body 1, primary cleaner 3, drying tower 4, drying tower base 41, hot blast stove 5, temporary storage hopper 6, elevator 7, cooling fan 8 and air duct 9.

[0100] On the upper surface of the vehicle body 1, there are arranged a drying tower base 41, a primary cleaner 3 and a hot blast stove 5. The drying tower base 41 is located at the middle position of the upper surface of the vehicle body 1. The primary cleaner 3 is arranged on one side of the drying tower base 41, and the hot blast stove 5 is arranged on the other side of the drying tower base 41. One end of the drying tower base 41 is provided with a cooling fan 8. The end of the drying tower 4 is rotatably arranged on the drying tower base 41. There are elevators 7 on both sides of the drying tower 4, and temporary storage hoppers 6 are arranged on both sides of the elevators 7. The temporary storage hoppers 6 are rotatably fixed on the vehicle body 1. One end of the air duct 9 is connected to the drying tower 4, and the other end is respectively connected to the hot blast stove 5 and the cooling fan 8 for gas transmission; the drying tower base 41, the primary cleaner 3 and the hot blast stove 5 are connected to the vehicle body 1 by bolts.

[0101] Please refer to Figure 1 , the vehicle body 1 is a movable carrier, and the vehicle body 1 includes: front vehicle support frame 11, vehicle head 12, chassis seat 13, wheels 14.

[0102] The vehicle head 12 is fixedly arranged at the front end of the vehicle body 1. The front vehicle support frame 11 is vertically arranged at the front end of the vehicle head 12 for supporting the drying tower 4. The chassis seat 13 is horizontally arranged at the rear end of the vehicle head 12, and the wheels 14 are arranged below the chassis seat 13.

[0103] Please refer to Figure 1 or Figure 2 , the drying device further includes: hydraulic rod 2; one end of the hydraulic rod 2 is arranged on the upper surface of the vehicle body of the chassis seat 13 and close to the position of the vehicle head 12, and the other end of the hydraulic rod 2 is arranged at the middle position of the drying tower 4; the hydraulic rod 2 is a telescopic device, and the hydraulic rod 2 is the power output mechanism for the rotation of the drying tower 4, used to control the rotation of the drying tower 4. The hydraulic rod 2 is connected to the vehicle body 1 and the drying tower 4 by pin shafts.

[0104] Please refer to Figure 6, a soft spiral feeding component 31 is arranged at the top of the primary cleaning sieve 3. The soft spiral feeding component 31 is connected to one end of a hose 32, and the other end of the hose 32 is placed in a temporary storage hopper 6. An output port is arranged at the bottom of the primary cleaning sieve 3, and the output port is connected to a feeding elevator 71; the soft spiral feeding component 31 sucks materials from the temporary storage hopper 6 on one side of the feeding elevator 71 through the hose 32, and at the same time sends the sucked materials into the primary cleaning sieve 3 for cleaning. The cleaned materials are conveyed to the feeding elevator 71 through the output port at the bottom of the primary cleaning sieve 3. The primary cleaning sieve 3 is used for the first impurity removal of materials, mainly removing large impurities and dust, and its structure is a cylindrical primary cleaning sieve or a combined cleaning sieve.

[0105] Please refer to Figure 2 and Figure 3 , on the side of the drying tower base 41 far away from the vehicle head 12 is connected to the end of the drying tower 4 through a pin shaft, which can be adjusted arbitrarily at 0° to 90° in the horizontal and vertical directions; the drying device includes a traveling state, a preparation state and a production state; when the drying tower 4 is in a horizontal position, it is in the traveling state; when the included angle between the drying tower and the horizontal direction is 0° to 90°, it is in the preparation state; when the drying tower 4 is in a vertical position, it is in the production state; when the drying device is in the traveling state, the drying tower 4 is supported by the front vehicle support frame 11, the drying tower base 41 and the hydraulic rod 2 together; when the drying tower 4 is in the preparation state and the production state, the drying tower 4 is supported by the drying tower base 41 and the hydraulic rod 2 together.

[0106] Please refer to Figure 7 , the drying tower 4 includes: a top component 42, a top flattening component 43, a first-stage high-temperature dehumidification area, a second-stage medium-temperature drying area, a third-stage air-cooling temperature-returning area and a housing 49;

[0107] The first-stage high-temperature dehumidification area, the second-stage medium-temperature drying area and the third-stage air-cooling temperature-returning area are arranged in the housing 49 from top to bottom. The first-stage high-temperature dehumidification area includes a first-stage high-temperature dehumidification area air outlet component 44 and a first-stage high-temperature dehumidification area hot air component 45 arranged up and down, and the internal space surrounded by the first-stage high-temperature dehumidification area air outlet component 44 and the first-stage high-temperature dehumidification area hot air component 45; the second-stage medium-temperature drying area includes a second-stage medium-temperature drying area air outlet component 46 and a second-stage medium-temperature drying area hot air component 47 arranged up and down, and the internal space surrounded by the second-stage medium-temperature drying area air outlet component 46 and the second-stage medium-temperature drying area hot air component 47; the third-stage air-cooling temperature-returning area includes a third-stage air-cooling temperature-returning area air inlet component 48 and the internal space surrounded by the third-stage air-cooling temperature-returning area air inlet component 48 and the top of the drying tower base 41.

[0108] Please refer to Figure 11, a hot air component 45 in the first high-temperature dehumidification zone is used to quickly heat up, dehumidify and dry the materials in the first high-temperature dehumidification zone. An air outlet component 44 in the first high-temperature dehumidification zone is used to discharge the gas in the first high-temperature dehumidification zone. A hot air component 47 in the second medium-temperature drying zone is used to slowly dry the materials in the second medium-temperature drying zone at a medium temperature to ensure quality. An air outlet component 46 in the second medium-temperature drying zone is used to discharge the gas in the second medium-temperature drying zone. An air inlet component 48 in the third air-cooling and temperature-returning zone is used to quickly dry the materials in the third air-cooling and temperature-returning zone by air-cooling. A grain discharging component 412 is used to discharge the gas in the third air-cooling and temperature-returning zone.

[0109] The top component 42 is arranged on the top of the drying tower 4, and a top flattening component 43 is arranged on the top component 42.

[0110] Please refer to Figure 6 , the top component 42 includes: a suction fan 421, a top cover 422 and a pipeline 423; the pipeline 423 is connected to the feeding elevator 71. The top cover 422 is arranged below the pipeline 423 and is in communication with the pipeline 423. A suction fan 421 is arranged on the pipeline 423, and the suction fan 421 is used to remove the bran of the materials entering from the feeding elevator 71.

[0111] The top flattening component 43 includes: a motor 431 and a material flattening device 432. The motor 431 is installed on the upper part of the exact middle of the top cover 422. The motor shaft 433 passes through the pipeline 423 and extends into the interior of the top cover 422. The material flattening device 432 is arranged below the top cover 422 and is connected to the motor shaft 433. The bottom of the top cover 422 is attached to the material flattening device 432. The material flattening device 432 is a uniformly distributed sheet-shaped rotating body of a certain length. The material flattening device 432 makes a circular rotational motion driven by the motor shaft 433, and is used to evenly scatter the materials entering the drying tower 4.

[0112] Please refer to Figure 6 , a first grain discharging cylinder 455 is arranged below the hot air component 45 in the first high-temperature dehumidification zone, and is used to discharge the materials to be dried in the first high-temperature dehumidification zone to the second medium-temperature drying zone; a second grain discharging cylinder 477 is arranged below the hot air component 47 in the second medium-temperature drying zone, and is used to discharge the materials to be dried in the second medium-temperature drying zone into the base hopper 413 of the second medium-temperature drying zone.

[0113] Please refer to Figure 9, both the hot air assembly 45 in the high-temperature dehumidification zone and the hot air assembly 47 in the medium-temperature drying zone of the second stage include: a triangular box 451, a movable material distribution plate 452, a cylinder 453, and a frame 454; the movable material distribution plate 452 and the triangular box 451 are installed at equal intervals at the bottom of the frame 454. A first discharge hole is formed on the movable material distribution plate 452, and a second discharge hole corresponding to the first discharge hole is formed at the upper and lower ends of the frame 454. One end of the movable material distribution plate 452 is connected to the cylinder 453 and can perform reciprocating movements in the horizontal direction to control the falling of materials; the middle of the triangular box 451 is hollowed out, and a first air permeation hole is formed on the top surface. A corresponding second air permeation hole is formed on the frame 454. The side end of the triangular box 451 is connected to the air duct 9 to convey the gas input from the air duct 9 into the drying tower 4.

[0114] The air outlet assembly 44 in the high-temperature dehumidification zone of the first stage includes: a second triangular box and a second frame; first air outlet holes are formed on both side ends of the second triangular box, and corresponding second air outlet holes are formed on the second frame and the side wall of the drying tower 4 to discharge the gas in the drying tower 4.

[0115] The air outlet assembly 46 in the medium-temperature drying zone of the second stage includes: a third triangular box, a fixed material distribution plate, and a third frame; third air outlet holes are formed on both side ends of the third triangular box, and corresponding fourth air outlet holes are formed on the third frame and the side wall of the drying tower 4 to discharge the gas in the drying tower 4. A first discharge hole is formed on the fixed material distribution plate, and a corresponding second discharge hole is formed on the third frame.

[0116] The air inlet assembly 48 in the air-cooling and temperature-returning zone of the third stage includes: a fourth triangular box and a fourth frame; first exhaust holes are formed at the bottom of both sides of the fourth triangular box, and corresponding second exhaust holes are formed on the fourth frame. The side end of the fourth triangular box is connected to the air duct 9 to convey the gas input from the air duct 9 into the drying tower 4.

[0117] Please refer to Figure 8 , the drying tower base 41 includes: a bracket 411, a grain discharging assembly 412, a base hopper 413, and a conveyor belt 414. The drying tower base 41 is used to provide support for the drying tower 4 and discharge grains.

[0118] The bracket 411 is fixedly connected to the vehicle body 1 by bolts to support the drying tower 4; the grain discharging assembly 412 is located at the top of the drying tower base 41, the base hopper 413 is located directly below the grain discharging assembly 412, and the conveyor belt 414 is located at the outlet of the base hopper 413. The conveyor belt 414 can rotate forward and backward, and both ends of the conveyor belt 414 are arranged below the material inlets of the feeding elevator 71 and the discharging elevator 72.

[0119] Please refer to Figure 4 or Figure 5, the temporary storage hopper 6 is used to temporarily store materials and improve the material throughput capacity. There are two temporary storage hoppers 6. The temporary storage hopper 6 close to the initial cleaning sieve 3 is used to temporarily store the materials to be dried, and the other temporary storage hopper 6 is used to temporarily store the materials out of the tower. The two temporary storage hoppers 6 are symmetrically distributed on the left and right sides of the vehicle body 1, and the two temporary storage hoppers 6 are located below the drying tower base 41. One side of the temporary storage hopper 6 is connected to the vehicle body 1 through a pin shaft, and the hydraulic motor can be used to realize the rotation of 0° to 90° in the horizontal and vertical directions. When the temporary storage hopper 6 is in the working state, the temporary storage hopper 6 rotates to the horizontal direction and extends a certain distance outside the wheel 14, and the material opening of the temporary storage hopper 6 faces upward; when the temporary storage hopper 6 is in the retracted state, the temporary storage hopper 6 rotates to the vertical direction and is completely retracted; between the horizontal direction and the vertical direction, it is in the conversion state. In the working state, a fence plate 61 can be added above the material opening according to requirements to expand the material temporary storage capacity.

[0120] Please refer to Figure 7 , the elevator 7 is a bucket elevator. The elevator 7 includes: a feeding elevator 71 and a discharging elevator 72, which work independently without interference, and are vertically symmetrically distributed on the left and right sides of the drying tower 4, and can realize the synchronous feeding and discharging of the drying tower 4 and improve the operation ability. The discharging port of the feeding elevator 71 is equipped with a decontamination motor for secondary decontamination of the materials, mainly removing bran; the top of the feeding elevator 71 is provided with a feeding elevator motor 712 for lifting the materials, and the outside of the feeding elevator 71 is provided with a feeding elevator guardrail 711; the top of the discharging elevator 72 is provided with a discharging elevator motor 721.

[0121] Please refer to Figure 3 , Figure 10 or Figure 11 , the hot blast stove 5 is the heat source of the drying tower 4 and is used to provide hot air flow for the hot air component 45 in the first-stage high-temperature dehumidification area and the hot air component 47 in the second-stage medium-temperature drying area. The hot blast stove 5 includes: a hot blast stove housing 51, a combustion chamber 52, a heat exchanger 53, a hot air blower 54, a chimney hot air blower 55, a combustion chamber air duct 56, a combustion chamber air damper 57, a hot air damper 58, an operation panel 59 and a combustion head blower 510.

[0122] The combustion chamber 52 is arranged at the central position inside the hot blast stove 5, and a heat exchanger area is arranged around the combustion chamber 52. There are gaps on the front and rear sides of the heat exchanger area, and the heat exchanger 53 is arranged in the heat exchanger area. The combustion chamber air duct 56 includes: the first-stage combustion chamber air duct, the second-stage combustion chamber air duct and the third-stage combustion chamber air duct. The first-stage combustion chamber air duct is the front gap of the heat exchanger area, the third-stage combustion chamber air duct is the rear gap of the heat exchanger area, and the second-stage combustion chamber air duct is arranged circumferentially between the combustion chamber 52 and the heat exchanger area; the combustion chamber 52, the combustion chamber air duct 56 and the heat exchanger 53 are wrapped by the hot blast stove housing 51.

[0123] The combustion chamber air damper 57 is located at the bottom of the hot blast stove housing 51 near the drying tower side. The combustion chamber air damper 57 is connected to the third - stage combustion chamber air duct. The hot air damper 58 is arranged at the top of the hot blast stove housing 51 away from the drying tower. The combustion head blower 510 is connected to the first - stage combustion chamber air duct. An operation panel 59 is arranged on the outer side wall of the hot blast stove housing 51.

[0124] The hot air blower 54 is located at the top of the hot blast stove housing 51 and is connected to the hot air damper 58. The chimney hot air blower 55 is located on one side of the top of the hot blast stove housing 51 and is connected to the combustion chamber air damper 57.

[0125] Please refer to Figure 3 or Figure 10 , normal - temperature gas is introduced into the combustion chamber 52 through the combustion head blower 510, becomes high - temperature gas after burning with fuel, and converges into a high - temperature hot - air stream through the chimney hot air blower 55 and is output to the first - stage high - temperature dehumidification area of the drying tower 4. The air volume is regulated by the combustion chamber air damper 57;

[0126] The hot air blower 54 collects the hot air heated by the heat exchanger 53 and outputs it to the second - stage medium - temperature drying area of the drying tower 4. The air volume is regulated by the hot air damper 58.

[0127] The cold air blower 8 is the air source for the third - stage air - cooled temperature - recovery area of the drying tower, providing high - speed normal - temperature air flow with a certain pressure as needed to achieve material cooling and re - dehumidification.

[0128] The air duct 9 is the input pipeline for the gas required by the drying tower 4, used for gas transmission, and realizes the connection between the drying tower 4, the hot blast stove 5, and the cold air blower 8. The air duct 9 includes: the first - stage high - temperature dehumidification air duct 91, the second - stage medium - temperature drying air duct 92, and the third - stage air - cooled temperature - recovery air duct 93.

[0129] The upper end of the first - stage high - temperature dehumidification air duct 91 is connected to the hot - air component 45 in the first - stage high - temperature dehumidification area, and the lower end is connected to the chimney hot air blower 55. The upper end of the second - stage medium - temperature drying air duct 92 is connected to the hot - air component 47 in the second - stage medium - temperature drying area, and the lower end is connected to the hot air blower 54. The upper end of the third - stage air - cooled temperature - recovery air duct 93 is connected to the air - inlet component 48 in the third - stage air - cooled temperature - recovery area, and the lower end is connected to the cold air blower 8. The chimney hot air blower 55, the cold air blower 8, the hot air blower 54

[0130] Please refer to Figure 11 , the drying device further includes: a segmented variable - temperature control system; the segmented variable - temperature control system is used for the whole - machine information collection and logic control, including:

[0131] A first - stage high - temperature dehumidification area high - level material level indicator 101, a first - stage high - temperature dehumidification area low - level material level indicator 102, and a first - stage high - temperature dehumidification area temperature - humidity sensor 104 arranged in the first - stage high - temperature dehumidification area. The first - stage high - temperature dehumidification area high - level material level indicator 101 is arranged above the first - stage high - temperature dehumidification area low - level material level indicator 102;

[0132] A high-temperature dehumidification zone inlet temperature sensor 103 disposed in a section of the high-temperature dehumidification air duct 91;

[0133] A high-level material level indicator 105, a low-level material level indicator 106, and a temperature and humidity sensor 108 in the second-stage medium-temperature drying zone disposed in the second-stage medium-temperature drying zone. The high-level material level indicator 105 in the second-stage medium-temperature drying zone is disposed above the low-level material level indicator 106 in the second-stage medium-temperature drying zone;

[0134] A second-stage medium-temperature drying zone inlet temperature sensor 107 disposed in the second-stage medium-temperature drying air duct 92;

[0135] A high-level material level indicator 109, a low-level material level indicator 1010, and a temperature and humidity sensor 1011 in the third-stage air-cooled temperature recovery zone disposed in the third-stage air-cooled temperature recovery zone. The high-level material level indicator 109 in the third-stage air-cooled temperature recovery zone is disposed above the low-level material level indicator 1010 in the third-stage air-cooled temperature recovery zone;

[0136] A base hopper material level indicator 1012 disposed at the outlet of the base hopper 413.

[0137] Embodiment 2:

[0138] Please refer to Figure 12-15 , this application also provides a method for emergency drying of grains. The emergency drying method realizes the variable temperature control of materials in sections according to the principles of synchronous control of loading and unloading, efficient drying in sections, and hierarchical utilization of energy. Based on a movable drying device for grains, it includes the following steps:

[0139] S1. Quick heating and dehumidification drying method: The first grain discharging cylinder 455 is closed, the material falling channel is closed, the material to be dried is lifted by the feeding elevator 71 to the drying tower 4, and after being leveled by the top leveling component 43 at the top of the tower, the dried material uniformly falls into the first-stage high-temperature dehumidification zone, and it is judged whether the stock and humidity of the material to be dried in the first-stage high-temperature dehumidification zone reach the threshold;

[0140] S1.1. The material continuously enters the first-stage high-temperature dehumidification zone from the top of the drying tower 4, and it is judged whether the material to be dried triggers the high-level material level indicator 101 in the first-stage high-temperature dehumidification zone;

[0141] S1.1.1. If the material to be dried does not trigger the high-level material level indicator 101 in the first-stage high-temperature dehumidification zone, the feeding elevator 71 continuously conveys the material to be dried to the drying tower 4;

[0142] S1.1.2. If the material to be dried triggers the high-level material level indicator 101 in the first-stage high-temperature dehumidification zone, the feeding elevator 71 stops feeding. At this time, the first-stage high-temperature dehumidification zone is in a full bin state;

[0143] S1.2. The chimney hot air blower 55 starts to work, and the temperature of the gas in the first-stage high-temperature dehumidification air duct 91 is detected by the first-stage high-temperature dehumidification area inlet temperature sensor 103. When the temperature reaches the threshold value, the air flow reaching the wind pressure threshold value is blown into the first-stage high-temperature dehumidification area hot air assembly 45 to start high-temperature dehumidification and drying of the material, and the humidity sensor 104 in the first-stage high-temperature dehumidification area is used to judge whether the humidity of the material to be dried reaches the threshold value;

[0144] S1.2.1. If the humidity of the material to be dried does not reach the threshold value, continue to convey the air flow to the first-stage high-temperature dehumidification area hot air assembly 45 through the chimney hot air blower 55;

[0145] S1.2.2. If the humidity of the material to be dried reaches the threshold value, the first row of grain cylinders 455 is opened to discharge the grain, and the material is discharged to the second-stage medium-temperature drying area;

[0146] S1.3. Judge whether the material to be dried triggers the first-stage high-temperature dehumidification area low-level material positioner 102;

[0147] S1.3.1. If the dried material does not trigger the first-stage high-temperature dehumidification area low-level material positioner 102, continue to keep the first row of grain cylinders 455 open and discharge the material to the second-stage medium-temperature drying area;

[0148] S1.3.2. If the dried material triggers the first-stage high-temperature dehumidification area low-level material positioner 102, stop discharging the grain and repeat the entire step S1;

[0149] S2. Slow-speed medium-temperature quality-preserving drying method: The material falls into the second-stage medium-temperature drying area, and the second row of grain cylinders 477 is closed, and it is judged whether the stock volume and temperature and humidity of the material in the second-stage medium-temperature drying area reach the threshold value;

[0150] S2.1. The hot air blower 54 starts to work, and the temperature of the gas in the second-stage medium-temperature drying air duct 92 is detected by the second-stage medium-temperature drying area inlet temperature sensor 107. When the temperature reaches the threshold value, the air flow reaching the wind pressure threshold value is blown into the second-stage medium-temperature drying area hot air assembly 47 to start medium-temperature quality-preserving drying of the material, and the temperature and humidity sensor 108 in the second-stage medium-temperature drying area is used to judge whether the temperature and humidity of the material reach the threshold value;

[0151] S2.1.1. If the temperature and humidity of the material do not reach the threshold value, continue to convey the air flow to the second-stage medium-temperature drying area hot air assembly 47 through the hot air blower 54;

[0152] S2.1.2. If the temperature and humidity of the material reach the threshold value, the hot air blower 54 stops working;

[0153] S2.2. Judge whether the material to be dried triggers the second-stage medium-temperature drying area high-level material positioner 105;

[0154] S2.2.1. The material continuously falls from the first grain discharging cylinder 455. If the material triggers the high-level material level sensor 105 in the second-stage medium-temperature drying area, at this time, the second-stage medium-temperature drying area is in a full bin state, and the second grain discharging cylinder 477 is opened for grain discharging.

[0155] S2.2.2. If the material does not trigger the high-level material level sensor 105 in the second-stage medium-temperature drying area, then the second grain discharging cylinder 477 remains closed.

[0156] S2.3. Determine whether the material to be dried triggers the low-level material level sensor 106 in the second-stage medium-temperature drying area.

[0157] S2.3.1. If the material does not trigger the low-level material level sensor 106 in the second-stage medium-temperature drying area, then the second grain discharging cylinder 477 remains open, and the material is discharged to the third-stage air-cooling temperature-returning area.

[0158] S2.3.1. If the material triggers the low-level material level sensor 106 in the second-stage medium-temperature drying area, then stop grain discharging and repeat the entire step S2.

[0159] S3. High-speed air-cooling temperature-returning drying method: The material falls into the third-stage air-cooling temperature-returning area, and the grain discharging assembly 412 is closed, and it is judged whether the stock, temperature, and humidity of the material in the third-stage air-cooling temperature-returning area reach the threshold value.

[0160] S3.1. The cold air blower 8 starts to work, blowing normal-temperature cold air into the air inlet assembly 48 of the third-stage air-cooling temperature-returning area, starting to quickly air-cool and temperature-return the material, and judging whether the temperature and humidity of the material reach the threshold value through the temperature and humidity sensor 1011 in the third-stage air-cooling temperature-returning area.

[0161] S3.1.1. If the temperature and humidity of the material do not reach the threshold value, then continue to supply normal-temperature cold air to the air inlet assembly 48 of the third-stage air-cooling temperature-returning area through the cold air blower 8.

[0162] S3.1.2. If the temperature and humidity of the material reach the threshold value, the cold air blower 8 stops working.

[0163] S3.2. Determine whether the material to be dried triggers the high-level material level sensor 109 in the third-stage air-cooling temperature-returning area.

[0164] S3.2.1. The material continuously falls from the second grain discharging cylinder 477. If the material triggers the high-level material level sensor 109 in the third-stage air-cooling temperature-returning area, at this time, the third-stage air-cooling temperature-returning area is in a full bin state, and the grain discharging assembly 412 is opened for grain discharging.

[0165] S3.2.2. If the material does not trigger the high-level material level sensor 109 in the third-stage air-cooling temperature-returning area, then the grain discharging assembly 412 remains closed, and the entire step S3 is repeated.

[0166] S4. Method for abnormal or normal output of materials: The materials fall into the base hopper 413 and then onto the conveyor belt 414 through the bottom outlet. At this time, it is judged whether there is any abnormality in the materials on the conveyor belt 414, such as not being thoroughly dried;

[0167] S4.1. If there is an abnormality in the materials on the conveyor belt 414, the materials will be conveyed along the direction of the entire conveyor belt 414 to the temporary storage hopper 6 on one side of the feeding elevator 71 to realize the cyclic drying of the materials;

[0168] S4.2. If there is no abnormality in the materials on the conveyor belt 414, the materials will be conveyed by the conveyor belt 414 to the temporary storage hopper 6 on one side of the discharging elevator 72 for storage;

[0169] S5. After the feeding elevator 71 finishes lifting all the materials to be dried, start the timed drying and discharging program to gradually discharge and dry the remaining materials in the drying tower 4. Compared with the prior art, the beneficial effects of the present invention at least include:

[0170] (1). Based on the modular and lightweight design principle, the drying tower is designed in a foldable manner in terms of structure. It is vertically unfolded during production and lies flat when moving. The state switching is automatically carried out by a hydraulic device. Combining with an efficient drying method, it can take into account large-scale drying and rapid movement;

[0171] (2). The present application designs a double-passage for the hot blast stove air duct. High-energy hot air is introduced into the first-stage dehumidification area to quickly raise the temperature of the materials and rapidly dehydrate them; medium-temperature hot air is introduced into the second-stage drying area to re-dry the materials at medium temperature and reduce the moisture content; at the same time, outdoor normal-temperature gas is introduced into the third-stage temperature recovery area to cool and air-dry the materials and dehydrate them again; overall, it realizes a drying method of rapid temperature rise and dehumidification, slow-speed medium-temperature quality preservation, and high-speed air-cooling temperature recovery, improving the drying process level while reducing energy consumption. (The cold air is heated air after being burned in the combustion chamber)

[0172] (3). The present application designs the elevator in a double-way symmetric manner to realize synchronous feeding and discharging; the temporary storage hopper for materials is designed with an enlarged capacity, greatly improving the material throughput capacity;

[0173] (4). First, the high-temperature gas in the combustion chamber of the hot blast stove is efficiently utilized and mixed with the introduced normal-temperature air to form high-temperature gas, which enters the first-stage high-temperature dehumidification area to quickly heat and dehumidify the materials; secondly, the medium-temperature gas exchanged and heated by the hot blast stove enters the second-stage medium-temperature drying area to perform secondary dehumidification and drying on the materials; finally, normal-temperature air is introduced into the third-stage air-cooling temperature recovery area to perform three-time air-drying and dehumidification on the materials; through the organic combination of three-stage hot and cold gases, a rapid dehydration method of high-temperature dehumidification, medium-temperature drying, and normal-temperature cooling and air-drying is formed, and a segmented variable-temperature control technology is supported to ensure the smooth realization of the emergency drying process.

[0174] 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 them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications or equivalent replacements can still be made to the specific embodiments of the present invention, and any modification or equivalent replacement that does 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 portable grain drying device, comprising: The vehicle body (1), the primary cleaning screen (3), the drying tower (4), the drying tower base (41), the hot air furnace (5), the temporary storage hopper (6), the elevator (7), the cooling fan (8) and the air duct (9); the characteristics are: The upper surface of the vehicle body (1) is provided with a drying tower base (41), a primary cleaning screen (3) and a hot air furnace (5). The drying tower base (41) is located in the middle of the upper surface of the vehicle body (1). The primary cleaning screen (3) is provided on one side of the drying tower base (41). The primary cleaning screen (3) is used for removing impurities from the material for the first time. The hot air furnace (5) is provided on the other side of the drying tower base (41). A cold air blower (8) is provided at one end of the drying tower base (41). The cold air blower (8) is used for cooling and dehumidifying the material again. The end of the drying tower (4) is rotatably arranged on the drying tower base (41). The drying tower (4) is provided with an elevator (7) on both sides. Temporary storage hoppers (6) are provided on both sides of the elevator (7). The temporary storage hoppers (6) are rotatably fixed on the vehicle body (1). One end of the air duct (9) is connected to the drying tower (4), and the other end is respectively connected to the hot air furnace (5) and the cold air blower (8) for gas transmission. The drying tower (4) comprises: a top component (42), a top flattening component (43), a first high-temperature dehumidification zone, a second medium-temperature drying zone, a third air-cooling and temperature-returning zone, and a shell (49); The first high-temperature dehumidification zone, the second medium-temperature drying zone, and the third air-cooling temperature return zone are arranged from top to bottom in the housing (49); The top component (42) is arranged on the top of the drying tower (4), and a top flattening component (43) is arranged on the top component (42).

2. A portable grain drying device according to claim 1, characterized in that: The vehicle body (1) comprises: a front support frame (11), a front end (12), a chassis seat (13), and wheels (14); A front end of the vehicle body (1) is fixedly provided with a vehicle head (12), a front vehicle support frame (11) is vertically provided at the front end of the vehicle head (12) for supporting the drying tower (4), a chassis seat (13) is horizontally provided at the rear end of the vehicle head (12), and wheels (14) are provided below the chassis seat (13); A hydraulic rod (2) is also fixed on the upper surface of the vehicle body (1) for controlling the rotation of the drying tower (4); one end of the hydraulic rod (2) is arranged on the upper surface of the vehicle body (1) of the chassis seat (13) and close to the vehicle head (12), and the other end of the hydraulic rod (2) is arranged at the middle position of the drying tower (4).

3. The movable grain drying device according to claim 1, characterized in that: The high-temperature dehumidification zone comprises a high-temperature dehumidification zone air outlet component (44) and a high-temperature dehumidification zone hot air component (45) arranged above and below, and an internal space enclosed by the high-temperature dehumidification zone air outlet component (44) and the high-temperature dehumidification zone hot air component (45); The second-stage medium-temperature drying zone comprises a second-stage medium-temperature drying zone air outlet component (46) and a second-stage medium-temperature drying zone hot air component (47) arranged above and below, and an internal space enclosed by the second-stage medium-temperature drying zone air outlet component (46) and the second-stage medium-temperature drying zone hot air component (47); The three-stage air cooling and reheating zone comprises a three-stage air cooling and reheating zone air inlet assembly (48) and an internal space enclosed by the three-stage air cooling and reheating zone air inlet assembly (48) and the top of the drying tower base (41); A first row of grain air cylinders (455) is arranged below the first-stage high-temperature dehumidification zone hot air assembly (45), and a second row of grain air cylinders (477) is arranged below the second-stage medium-temperature drying zone hot air assembly (47).

4. The movable grain drying device according to claim 1, characterized in that: The elevator (7) comprises: an inlet elevator (71) and an outlet elevator (72); The discharge port of the feed elevator (71) includes a de-impurity motor (431) for secondary de-impurity of the material; a feed elevator motor (712) is provided on the top of the feed elevator (71) for lifting the material, and a feed elevator guardrail (711) is provided on the outside of the feed elevator (71); A discharge elevator motor (721) is arranged on the top of the discharge elevator (72).

5. A movable grain drying device according to claim 4, characterized in that: The top assembly (42) comprises: a suction fan (421), a top cover (422) and a pipeline (423); the pipeline (423) is connected to the feed elevator (71), the top cover (422) is arranged below the pipeline (423) and is in communication with the pipeline (423), and the suction fan (421) is arranged on the pipeline (423); The top leveling assembly (43) comprises: a motor (431) and a material leveler (432); the motor (431) is mounted on the upper part in the middle of the top cover (422); the motor shaft (433) passes through the pipe (423) and extends into the interior of the top cover (422); the material leveler (432) is arranged below the top cover (422) and is connected to the motor shaft (433); the bottom of the top cover (422) is fitted with the material leveler (432); and the material leveler (432) is a uniformly distributed sheet-shaped rotating body.

6. The movable grain drying device according to claim 3, characterized in that: The first-stage high-temperature dehumidification zone hot air component (45) and the second-stage medium-temperature drying zone hot air component (47) both include: a triangular box (451), a movable material distribution plate (452), a cylinder (453) and a frame (454); The movable material dividing plate (452) and the triangular box (451) are installed at equal intervals at the bottom of the frame (454); a discharge hole 1 is provided on the movable material dividing plate (452); and discharge holes 2 corresponding to the discharge hole 1 are provided at the upper and lower ends of the frame (454); one end of the movable material dividing plate (452) is connected to the cylinder (453) to realize horizontal reciprocating motion, so as to control the falling of materials; the triangular box (451) is hollowed out in the middle, and a ventilation hole 1 is provided on the top surface; and a corresponding ventilation hole 2 is provided on the frame (454); and the side end of the triangular box (451) is connected to the air duct (9) to transport the gas input from the air duct (9) to the drying tower (4).

7. The movable grain drying device according to claim 4, characterized in that: The drying tower base (41) comprises: a bracket (411), a grain discharge assembly (412), a base bucket (413) and a conveyor belt (414); The bracket (411) is fixedly connected to the vehicle body (1) by bolts and is used to support the drying tower (4); the grain discharge assembly (412) is located at the top of the drying tower base (41); the base bucket (413) is located directly below the grain discharge assembly (412); the conveyor belt (414) is located at the outlet of the base bucket (413); the conveyor belt (414) can rotate forward and reversely; and both ends of the conveyor belt (414) are arranged below the material ports of the feeding elevator (71) and the discharging elevator (72).

8. The movable grain drying device according to claim 1, characterized in that: The hot air stove (5) comprises: a combustion chamber (52), a heat exchanger (53), a combustion chamber air duct (56), a combustion chamber damper (57), a hot air damper (58), an operation panel (59) and a combustion head blower (510); A combustion chamber (52) is arranged at the center of the hot blast furnace (5), a heat exchanger area is arranged outside the combustion chamber (52), notches are arranged at the front and rear sides of the heat exchanger area, a heat exchanger (53) is arranged in the heat exchanger area, and the combustion chamber air duct (56) comprises: a first section of the combustion chamber air duct, a second section of the combustion chamber air duct and a third section of the combustion chamber air duct, the first section of the combustion chamber air duct is the front notch of the heat exchanger area, the third section of the combustion chamber air duct is the rear notch of the heat exchanger area, and the second section of the combustion chamber air duct is arranged between the combustion chamber (52) and the heat exchanger area in a circumferential direction; the combustion chamber (52), the combustion chamber air duct (56) and the heat exchanger (53) are wrapped by the hot blast furnace shell (51); The combustion chamber damper (57) is arranged at the bottom of the hot blast furnace shell (51) close to the drying tower (4), the combustion chamber damper (57) is connected to the third section of the combustion chamber air duct, the hot blast damper (58) is arranged at the top of the hot blast furnace shell (51) away from the drying tower (4), the combustion head fan (510) is connected to the first section of the combustion chamber air duct, and the outer side wall of the hot blast furnace shell (51) is provided with an operation panel (59).

9. The movable grain drying device according to claim 8, characterized in that: The hot blast furnace (5) further comprises: a hot blast furnace housing (51), a hot blast blower (54) and a chimney hot blast blower (55); The hot air blower (54) is located at the top of the hot air stove shell (51) and is connected to the hot air damper (58). The chimney hot air blower (55) is located at one side of the top of the hot air stove shell (51) and is connected to the combustion chamber damper (57).

10. The movable grain drying device according to claim 9, characterized in that: The air duct (9) comprises: a first section of high-temperature dehumidification air duct (91), a second section of medium-temperature drying air duct (92), and a third section of air-cooling and temperature-returning air duct (93); A section of high-temperature dehumidification air duct (91) is connected at its upper end to a section of high-temperature dehumidification zone hot air assembly (45), and at its lower end to a chimney hot air blower (55) of a hot air furnace (5); The upper end of the second-stage medium-temperature drying air duct (92) is connected to the second-stage medium-temperature drying zone hot air component (47), and the lower end is connected to the hot air blower (54) of the hot air furnace (5); The upper end of the three-section air-cooling and temperature-returning air duct (93) is connected to the three-section air-cooling and temperature-returning zone air inlet assembly (48), and the lower end is connected to the air cooler (8).

11. The movable grain drying device according to claim 4, characterized in that: A soft spiral feeding assembly (31) is arranged on the top of the primary cleaning screen (3), the soft spiral feeding assembly (31) is connected to one end of a hose (32), the other end of the hose (32) is placed in a temporary storage hopper (6), and an output port is arranged at the bottom of the primary cleaning screen (3), the output port is connected to a feed elevator (71).

12. A portable grain drying device according to any one of claims 1 to 11, characterized in that: The drying device further includes: a segmented temperature-changing control system; the segmented temperature-changing control system is used for whole machine information collection and logic control, including: A high-temperature dehumidification zone high-level device (101), a high-temperature dehumidification zone low-level device (102), and a high-temperature dehumidification zone temperature and humidity sensor (104) are arranged in a high-temperature dehumidification zone, wherein the high-temperature dehumidification zone high-level device (101) is arranged above the low-temperature dehumidification zone low-level device (102); A high-temperature dehumidification zone inlet temperature sensor (103) disposed in a high-temperature dehumidification air duct (91); A second-stage medium-temperature drying zone high-level material level device (105), a second-stage medium-temperature drying zone low-level material level device (106) and a second-stage medium-temperature drying zone temperature and humidity sensor (108) are arranged in the second-stage medium-temperature drying zone, wherein the second-stage medium-temperature drying zone high-level material level device (105) is arranged above the second-stage medium-temperature drying zone low-level material level device (106); A second-stage medium-temperature drying zone inlet temperature sensor (107) disposed in the second-stage medium-temperature drying air duct (92); A three-stage air-cooling reheating zone high-level material indicator (109), a three-stage air-cooling reheating zone low-level material indicator (1010) and a three-stage air-cooling reheating zone temperature and humidity sensor (1011) are arranged in the three-stage air-cooling reheating zone, wherein the three-stage air-cooling reheating zone high-level material indicator (109) is arranged above the three-stage air-cooling reheating zone low-level material indicator (1010); A base bucket material level indicator (1012) is arranged at the outlet of the base bucket (413).

13. A grain emergency drying method, characterized in that: A movable grain drying device according to any one of claims 1 to 12 comprises the following steps: Rapid heating, dehumidifying and drying method: the first grain discharge cylinder (455) is closed, the material falling channel is closed, the material to be dried is lifted to the drying tower (4) by the feed elevator (71), and the dried material is evenly dropped into a first high-temperature dehumidification zone through the flattening component (43) at the top of the tower, and it is judged whether the stock and humidity of the material to be dried in the first high-temperature dehumidification zone reach a threshold value; if the stock and humidity reach the threshold value, the material to be dried is discharged into the second medium-temperature drying zone, otherwise the above operation is continued; Slow-speed medium-temperature quality-keeping drying method: the material falls into the second-stage medium-temperature drying zone, and the second-row grain air cylinder (477) is closed, and it is determined whether the stock and temperature and humidity of the material in the second-stage medium-temperature drying zone reach a threshold value; if the stock and temperature and humidity reach the threshold value, the material is discharged into the third-stage air-cooling and temperature-returning zone, otherwise the above operation is continued; High-speed air cooling and reheating drying method: the material falls into the three-stage air cooling and reheating zone, and the grain discharge component (412) is closed, and it is determined whether the stock and temperature and humidity of the material in the three-stage air cooling and reheating zone reach the threshold value; if the stock and temperature and humidity reach the threshold value, the material is discharged into the base bucket (413), otherwise the above operation is continued; Abnormal or normal material output method: the material falls into the base bucket (413), and falls on the conveyor belt (414) through the bottom outlet. At this time, it is determined whether the material on the conveyor belt (414) is abnormal; If the material on the conveyor belt (414) is abnormal, the material is transported to the temporary storage hopper (6) on one side of the feed elevator (71) along the entire conveyor belt (414) to achieve cyclic drying of the material; If there is no abnormality in the material on the conveyor belt (414), the material is transported by the conveyor belt (414) to a temporary storage hopper (6) on one side of the discharge elevator (72) for storage; After the feed elevator (71) has lifted all the materials to be dried, the timing drying and discharging program is started to discharge the remaining materials in the drying tower (4) one by one for drying.

14. A grain emergency drying method according to claim 13, characterized in that: The rapid heating, dehumidifying and drying method further comprises the following steps: The material continuously enters a high-temperature dehumidification zone from the top of the drying tower (4), and determines whether the material to be dried triggers a high-level material indicator (101) in the high-temperature dehumidification zone; If the material to be dried does not trigger the high-level material indicator (101) of the high-temperature dehumidification zone, the feed elevator (71) continues to transport the material to be dried to the drying tower (4); If the material to be dried triggers the high-level material indicator (101) of the first high-temperature dehumidification zone, the feed elevator (71) stops feeding, and the first high-temperature dehumidification zone is now in a full warehouse state; The chimney hot air blower (55) starts to work, and detects the temperature of the gas in a section of the high-temperature dehumidification zone inlet temperature sensor (103). When the temperature reaches a threshold value, the airflow reaching the wind pressure threshold value is blown into a section of the high-temperature dehumidification zone hot air component (45), and the material is started to be dehumidified and dried at high temperature. The section of the high-temperature dehumidification zone temperature and humidity sensor (104) is used to determine whether the humidity of the material to be dried reaches the threshold value. If the humidity of the material to be dried does not reach the threshold, the air flow continues to be delivered to a hot air component (45) in a high-temperature dehumidification zone through the chimney hot air blower (55); If the humidity of the material to be dried reaches the threshold, the first grain discharge cylinder (455) is opened to discharge the grain to the second stage medium temperature drying area; Determine whether the material to be dried triggers a low-level material level indicator (102) in a high-temperature dehumidification zone; If the drying material does not trigger the low level device (102) of the first high-temperature dehumidification zone, the first grain discharge cylinder (455) continues to be opened to discharge the material to the second medium-temperature drying zone; If the drying material triggers a low-level material level device (102) in a high-temperature dehumidification zone, the grain discharge is stopped and the above steps are repeated.

15. A grain emergency drying method according to claim 13, characterized in that: The slow medium temperature quality preservation drying method also includes the following steps: The hot air blower (54) starts to work, and the temperature of the gas in the second-stage medium-temperature drying air duct (92) is detected by the second-stage medium-temperature drying zone inlet temperature sensor (107). When the temperature reaches a threshold value, the airflow reaching the wind pressure threshold value is blown into the second-stage medium-temperature drying zone hot air component (47), and the medium-temperature quality-preserving drying of the material is started. The temperature and humidity sensor (108) of the second-stage medium-temperature drying zone is used to determine whether the temperature and humidity of the material have reached the threshold value. If the temperature and humidity of the material do not reach the threshold value, the hot air blower (54) continues to deliver air to the hot air component (47) of the second-stage medium-temperature drying zone; If the temperature and humidity of the material reaches the threshold, the hot air blower (54) stops working; Determine whether the material to be dried triggers the high-level material indicator (105) of the second-stage medium-temperature drying zone; The material continuously falls from the first grain discharge cylinder (455). If the material triggers the high level device (105) of the second-stage medium-temperature drying zone, the second-stage medium-temperature drying zone is in a full warehouse state, and the second grain discharge cylinder (477) is opened to discharge the grain. If the material does not trigger the high level indicator (105) of the second-stage medium-temperature drying zone, the second-row grain gas cylinder (477) continues to be closed; Determine whether the material to be dried triggers the low level indicator (106) of the second-stage medium-temperature drying zone; If the material does not trigger the low level indicator (106) of the second-stage medium-temperature drying zone, the second-row grain gas cylinder (477) continues to be opened to discharge the material to the third-stage air-cooling and temperature-returning zone; If the material triggers the low level indicator (106) of the second-stage medium-temperature drying zone, the grain discharge is stopped and the above steps are repeated.

16. A grain emergency drying method according to claim 13, characterized in that: The high-speed air cooling and temperature-returning drying method further comprises the following steps: The air cooler (8) starts to work, blowing cold air at room temperature into the three-stage air cooling and temperature return zone air inlet assembly (48), starting to quickly cool and temperature return the material for drying, and judging whether the temperature and humidity of the material have reached a threshold value through the three-stage air cooling and temperature return zone temperature and humidity sensor (1011); If the temperature and humidity of the material do not reach the threshold value, the cold air at normal temperature continues to be delivered to the air inlet assembly (48) of the three-stage air cooling and temperature return zone through the cold air blower (8); If the temperature and humidity of the material reaches a threshold value, the cooling fan (8) stops working; Determine whether the material to be dried triggers the high-level material level indicator (109) of the three-stage air cooling and temperature return zone; The material continuously falls from the second grain discharge cylinder (477). If the material triggers the high level device (109) of the three-stage air cooling and temperature return zone, the three-stage air cooling and temperature return zone is in a full warehouse state, and the grain discharge component (412) is opened to discharge the grain; If the material does not trigger the high-level material indicator (109) of the three-stage air-cooling and temperature-returning zone, the grain discharge component (412) continues to be closed and the above steps are repeated.

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