Grain drying device
By combining the design of the screw rod and the screw stirring blades with the hot air chamber and the hot air pipe, the problem of uneven grain drying is solved, achieving efficient and uniform grain drying, and reducing energy waste and environmental pollution.
Patent Information
- Application Number
- CN202511841108.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-01-20
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In existing technologies, natural sun drying occupies a large area and has low drying efficiency. The stirring equipment has poor stirring and disturbance effects, resulting in uneven grain drying and problems such as over-drying of grain at the bottom and high moisture content of grain at the top in vertical drying towers.
Design a grain drying device that uses a spiral rod and spiral stirring blades rotating in opposite directions, combined with a hot air chamber and hot air pipes, to achieve a flow circulation in which the center of the grain rises and the periphery falls. At the same time, the grain is heated evenly through the hot air chamber and hot air pipes. Insulation materials are used to reduce heat loss, and dehumidification and dust filtration devices are set up to improve drying efficiency and uniformity.
It improves the uniformity and efficiency of grain drying, avoids situations where some grains are too dry or too wet, saves energy and is environmentally friendly, and reduces energy waste and environmental pollution.
Smart Images
Figure CN121363852A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the field of grain processing device, and particularly relates to a grain drying device. BACKGROUND
[0002] Many grains need to be dried before being stored, such as common rice, wheat and corn. The grains with high moisture content will be mildewed, germinated, damaged by insects and heated during storage, which results in short storage time, quality decline and even complete loss. The current drying methods include natural airing, stirring drying equipment and vertical drying tower. However, the natural airing method has a large occupation area and low drying efficiency, and is difficult to deal with large quantities of harvested grains. The stirring equipment has poor stirring effect on the grains, and the grains in the central position are difficult to be uniformly heated, which results in uneven drying of the grains in the equipment. The vertical drying tower also has the problem of uneven drying of the grains, i.e., the bottom layer of grains is over-dried and the top layer of grains still has high moisture content. SUMMARY
[0003] The present application aims to provide a grain drying device to solve the technical problems of the natural airing method, i.e., large occupation area, low drying efficiency, difficulty in dealing with large quantities of harvested grains, poor stirring effect on the grains, difficulty in uniformly heating the grains in the central position, uneven drying of the grains in the equipment and uneven drying of the grains in the vertical drying tower.
[0004] To achieve the above-mentioned purpose, the specific technical scheme of the present application is as follows. A grain drying device, comprising a stirring tank body, a stirring cavity body arranged in the middle of the stirring tank body, a feeding port arranged on the top of the stirring tank body and communicated with the stirring cavity body, a discharging port arranged on the bottom of the stirring cavity body and extended to the outside of the stirring tank body, a motor arranged on the top of the stirring tank body, a screw rod arranged in the stirring cavity body and extended to the position of the discharging port, a plurality of screw stirring blades arranged on the two sides of the screw rod and extended to the position of the inner wall of the stirring cavity body, a plurality of air vents arranged on the periphery of a hot air cavity body arranged outside the stirring cavity body in the stirring tank body and communicated with the stirring cavity body, a fan arranged on one side of the stirring tank body, a heater arranged at the air inlet of the fan, and a pipeline arranged between the air outlet of the fan and the hot air cavity body.
[0005] Further, the stirring tank body is provided with a hot air outlet communicated with the stirring cavity body, a filter screen arranged opposite to the hot air outlet in the stirring tank body, and a pneumatic valve arranged on the feeding port.
[0006] Further, the stirring tank body is provided with a heat preservation cavity body arranged outside the hot air cavity body.
[0007] Further, the heat preservation cavity is filled with a heat preservation material; the heat preservation material includes one or more of pearl wool, rock wool or cast polyurethane.
[0008] Further, the hot air cavity inner wall extends into the stirring cavity and is provided with a plurality of hot air pipes; the hot air pipes are provided with a plurality of air vents.
[0009] Further, the upper and lower adjacent two spiral stirring blades are arranged on the upper and lower sides of the hot air pipes.
[0010] Further, a dust filter box is arranged on one side of the stirring tank; an air inlet of the dust filter box is communicated with an air outlet of the stirring tank through a pipeline.
[0011] Further, a dehumidifying device is arranged on one side of the stirring tank; an air outlet of the dust filter box is communicated with an air inlet of the dehumidifying device through a pipeline; an air outlet of the dehumidifying device is communicated with an air inlet of the heater through a pipeline.
[0012] The grain drying device has the following advantages: when the grain in the stirring cavity is dried, the air heated by the heater is blown into the hot air cavity by the fan and enters the stirring tank through the air vents to dry the grain; meanwhile, the spiral rod and the spiral stirring blade arranged in the stirring cavity of the stirring tank are driven by the motor, the spiral directions of the spiral rod and the spiral stirring blade are opposite, when the grain at the center position of the stirring cavity is lifted upward by the rotation of the spiral rod driven by the motor, the spiral stirring blade at the edge position of the stirring cavity pushes the grain downward, so that the grain in the stirring cavity forms a flow circulation of upward movement at the center position and downward movement at the periphery position, the stirring effect of the grain is increased, all the grain in the stirring cavity moves, the hot air entering through the air vents is evenly dried, the situation that some grain is too dry and some grain has high humidity is avoided, and the uniformity and efficiency of the grain drying are improved; in order to further improve the uniformity and efficiency of the grain drying, a plurality of hot air pipes with air vents are arranged in the stirring cavity by extending the inner wall of the hot air cavity into the stirring cavity, so that the grain at the center position of the stirring cavity is simultaneously dried by the hot air pipes and the air vents arranged thereon while the stirring grain is dried through the air vents arranged on the stirring cavity wall, the uniformity and efficiency of the grain drying are further improved. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the fan and heater installation structure of the present application; Figure 3 It is a schematic diagram of the internal structure section of the present application; Figure 4For the invention Figure 3 A region amplification schematic diagram in the present application Figure 5 For the invention Figure 3 B region amplification schematic diagram in the present application The figure mark description: 1, agitator jar body; 2, stirring cavity; 3, feed inlet; 4, discharge port; 5, motor; 6, screw rod; 7, spiral stirring blade; 8, hot air cavity; 9, air vent; 10, fan; 11, heater; 12, hot air outlet; 13, filter screen; 14, pneumatic valve; 15, heat preservation cavity; 16, hot air pipe; 17, dust filter box; 18, dehumidification device. DETAILED DESCRIPTION
[0014] In order to better understand the purpose, structure and function of the present application, the present application will be further described in detail below in combination with the drawings.
[0015] As Figures 1-5 shown, the present application is a kind of grain drying device, including agitator jar body 1;Agitator jar body 1 in the middle part is provided with stirring cavity 2;Agitator jar body 1 top is provided with feed inlet 3 and stirring cavity 2 communication;Stirring cavity 2 bottom extends to the outside of agitator jar body 1 and is provided with discharge port 4;Agitator jar body 1 top is provided with motor 5;Motor 5 extends to the stirring cavity 2 inside and is provided with screw rod 6 and extends to the position of discharge port 4;Screw rod 6 both sides are oppositely provided with multiple groups of spiral stirring blade 7 and its spiral direction is opposite and extends to the position of stirring cavity 2 inner wall;Agitator jar body 1 in stirring cavity 2 outside is provided with hot air cavity 8;Hot air cavity 8 periphery is provided with multiple air vents 9 and stirring cavity 2 communication;Agitator jar body 1 one side is provided with fan 10;Fan 10 air inlet position is provided with heater 11;Fan 10 air outlet extends to agitator jar body 1 inside and is communicated with hot air cavity 8 through pipeline.
[0016] In combination Figures 1-5As shown, in use, the grain to be dried is passed into the stirring cavity 2 in the stirring tank body 1 through the feed port 3, and then the heater 11, the fan 10 and the motor 5 are started. The fan 10 blows the air heated by the heater 11 into the hot air cavity 8 and into the stirring tank body 1 through the ventilation hole 9 to perform the drying operation on the grain. At the same time, the motor 5 drives the spiral rod 6 and the spiral stirring blade 7 provided in the stirring cavity 2 in the stirring tank body 1 to rotate synchronously. The spiral direction of the spiral rod 6 is opposite to that of the spiral stirring blade 7. When the motor 5 drives the spiral rod 6 to rotate to lift the grain at the center position of the stirring cavity 2 upward, the spiral stirring blade 7 at the edge position of the inner wall of the stirring cavity 2 pushes the grain downward, so that the grain in the stirring cavity 2 forms a flow circulation of upward at the center position and downward at the periphery, increases the stirring effect on the grain, and makes all the grain in the stirring cavity 2 move, so that the hot air passed through the ventilation hole 9 can uniformly dry the grain, avoiding the situation that some grain is too dry and some grain has high humidity, improving the uniformity and efficiency of grain drying. After the drying is completed, the motor 5 is reversed to make the spiral rod 6 push the grain at the center position of the stirring cavity 2 downward and discharge the stirring tank body 1 through the discharge port 4, increasing the discharge efficiency and avoiding the situation that some grain remains in the stirring cavity 2.
[0017] As shown in Figure 4 , Figure 5 , the stirring tank body 1 is provided with a heat preservation cavity 15 outside the hot air cavity 8, and the heat preservation cavity 15 is filled with heat preservation materials. The heat preservation materials include one or more of pearl wool, rock wool or cast polyurethane. When the air heated by the heater 11 is passed into the hot air cavity 8 through the fan 10 and heated to the grain in the stirring cavity 2 through the ventilation hole 9, the heat preservation cavity 15 filled with heat preservation materials is used to heat insulate the inside of the whole stirring tank body 1, avoiding the rapid escape of heat into the air, causing the temperature in the hot air cavity 8 and the stirring cavity 2 in the stirring tank body 1 to drop rapidly. In order to maintain sufficient temperature and drying effect on the grain, the power of the heater 11 and the fan 10 needs to be increased, resulting in a large amount of unnecessary heat loss and waste of energy.
[0018] As shown in Figure 5As shown, the inner wall of the hot air cavity 8 extends into the stirring cavity 2 and is provided with a plurality of hot air pipes 16; the hot air pipes 16 are provided with a plurality of air vents 9, and the upper and lower adjacent two spiral stirring blades 7 are arranged on the upper and lower sides of the hot air pipes 16. The spiral stirring blades 7 arranged on the upper and lower sides of the hot air pipes 16 ensure that the spiral stirring blades 7 do not contact and collide with the hot air pipes 16 while rotating, thereby preventing damage to the equipment. When the motor 5 drives the screw rod 6 and the spiral stirring blades 7 to stir the grains and the hot air in the hot air cavity 8 is introduced into the stirring cavity 2 through the air vents 9 to dry the grains, the hot air in the hot air cavity 8 is simultaneously introduced into the stirring cavity 2 through the hot air pipes 16 and the air vents 9 arranged thereon to dry the grains in the inner part and the central part of the stirring cavity 2, thereby further increasing the uniformity of the grain drying and the efficiency of the drying work.
[0019] As shown in Figure 1 , Figure 4 , the stirring tank body 1 is provided with a hot air outlet 12 communicating with the stirring cavity 2 at the top; the filter screen 13 is arranged in the stirring tank body 1 opposite the hot air outlet 12; the pneumatic valve 14 is arranged on the feed inlet 3. After the grains to be dried are introduced into the stirring cavity 2 through the feed inlet 3, the pneumatic valve 14 is started to close the feed inlet 3, preventing the gas in the stirring cavity 2 from being discharged from the feed inlet 3. During the drying process of the grains, the hot air introduced into the stirring cavity 2 through the air vents of the hot air cavity 8 is changed into wet hot air carrying the moisture in the grains after drying the grains, and then discharged from the stirring cavity 2 and the stirring tank body 1 through the hot air outlet 12. When the wet hot air is discharged through the hot air outlet 12, the filter screen 13 filters the wet hot air to prevent the grains from being discharged with the wet hot air, thereby preventing the waste of grains and the pollution of the external environment.
[0020] As shown in Figure 2 , the stirring tank body 1 is provided with a dust filtering box 17 on one side; the air inlet of the dust filtering box 17 communicates with the hot air outlet 12 of the stirring tank body 1 through a pipeline. The wet hot air discharged from the stirring tank body 1 through the hot air outlet 12 carries a large amount of dust, seed shells, and grain debris contained in the grains. Direct discharge into the air will cause air pollution and affect the working environment of the workers. The wet hot air carrying a large amount of dust is introduced into the dust filtering box 17 through the pipeline, and the wet hot air containing dust is filtered by the dust filtering box 17 to avoid environmental pollution.
[0021] As shown in Figure 2As shown, the stirring tank body 1 is provided with a dehumidifying device 18 on one side; the air outlet of the dust filter box 17 is communicated with the air inlet of the dehumidifying device 18 through a pipeline; the air outlet of the dehumidifying device 18 is communicated with the air inlet of the heater 11 through a pipeline, the wet hot air filtered through the dust filter box 17 is introduced into the dehumidifying device 18, the moisture in the filtered wet hot air is condensed and discharged through the dehumidifying device 18, so that the wet hot air is restored to hot air with a certain temperature, and then the hot air reaches the position of the heater 11, is further heated through the heater 11, and is pressed into the hot air cavity 8 in the stirring tank body 1 by the pressure generated by the fan 10 through the connecting pipeline, and is introduced into the stirring cavity 2 through the ventilation hole 9 to dry the grain, so that the gas circulation is formed, the waste of gas heat is avoided, and the energy saving and environmental protection are better.
[0022] It can be understood that the present application is described by some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to the features and embodiments without departing from the spirit and scope of the present application. In addition, under the guidance of the present application, the features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the present application. Therefore, the present application is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope of protection of the present application.
Claims
1. A grain drying apparatus, characterized by, Including stirring tank body (1);Stirring tank body (1) in the middle part is provided with stirring cavity (2);Stirring tank body (1) top is provided with feed inlet (3) and stirring cavity (2) communication;Stirring cavity (2) bottom extends to the outside of stirring tank body (1) and is provided with discharge port (4);Stirring tank body (1) top is provided with motor (5);Motor (5) extends to the position of screw rod (6) extending to discharge port (4) in stirring cavity (2);Screw rod (6) both sides are oppositely provided with multiple groups of spiral stirring blades (7) extending to the position of the inner wall of stirring cavity (2) in the opposite direction;Stirring tank body (1) is provided with hot air cavity (8) outside stirring cavity (2);Hot air cavity (8) is provided with multiple air vents (9) on the periphery and is communicated with stirring cavity (2);Stirring tank body (1) one side is provided with fan (10);Fan (10) air inlet position is provided with heater (11);Fan (10) outlet is extended to the inside of stirring tank body (1) and is communicated with hot air cavity (8) through pipeline.
2. The grain drying apparatus of claim 1, wherein The stirring tank body (1) top is provided with hot air outlet (12) and stirring cavity (2) communication;Stirring tank body (1) in the position opposite hot air outlet (12) is provided with filter screen (13);Feed inlet (3) is provided with pneumatic valve (14).
3. The grain drying apparatus of claim 1, wherein The stirring tank body (1) is provided with heat preservation cavity (15) outside hot air cavity (8).
4. The grain drying apparatus of claim 3, wherein The heat preservation cavity (15) is filled with heat preservation material;Heat preservation material includes one or more of pearl wool, rock wool or cast polyurethane.
5. The grain drying apparatus of claim 1, wherein, The inner wall of the hot air cavity (8) is provided with a plurality of hot air pipes (16) extending into the stirring cavity (2);Hot air pipe (16) is provided with a plurality of air vents (9).
6. The grain drying apparatus of claim 5, wherein, The upper and lower adjacent two spiral stirring blades (7) are arranged on the upper and lower sides of the hot air pipe (16).
7. The grain drying apparatus of claim 2, wherein The stirring tank body (1) one side is provided with dust filter box (17);Dust filter box (17) air inlet is communicated with the hot air outlet (12) of stirring tank body (1) through pipeline.
8. The grain drying apparatus of claim 7, wherein, The stirring tank body (1) one side is provided with dehumidification device (18);Dust filter box (17) air outlet is communicated with the air inlet of dehumidification device (18) through pipeline;Dehumidification device (18) air outlet is communicated with the air inlet of heater (11) through pipeline.