Dryer for drying agricultural grains

Abstract

The utility model relates to the technical field of crop drying, and discloses a dryer for drying crop grains, which comprises a drying cylinder, a hot-air blower is fixedly mounted at the bottom of the drying cylinder, a hot-air pipe is fixedly mounted at the upper part of the hot-air blower, and the hot-air pipe is fixedly sleeved in an inner cavity of the drying cylinder. First exhaust ports are evenly formed in the middle of the hot air pipe, drying pipes are evenly and fixedly connected to the middle of an inner cavity of the drying cylinder and located on the periphery of the hot air pipe in a sleeving mode, breathable nets are evenly and fixedly installed on the side faces of the drying pipes, a motor is fixedly installed at the top of the drying cylinder, and an output shaft of the motor movably sleeves the top of the inner cavity of the drying cylinder; grain is distributed through the six sets of drying pipes, the contact area between the grain and hot air flow is increased, meanwhile, the grain is driven to be close to an exhaust port in the rotating process of fan blades, moisture in the grain is rapidly evaporated, the drying efficiency is improved, insufficient drying is avoided, and the working efficiency of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of agricultural crop drying technology, and in particular to a dryer for drying agricultural grains. Background Technology

[0002] Grain drying is a crucial step in ensuring food security. It primarily works by reducing the moisture content of grains to inhibit mold, pests, and respiration, thereby extending their shelf life. Traditional methods rely on natural sun-drying, but these are susceptible to weather conditions and suffer from low efficiency and high losses. Modern technology utilizes mechanized drying equipment, such as dryers and drying silos. Scientific drying processes not only reduce post-harvest losses but also improve grain processing performance, providing a reliable guarantee for grain reserves and market circulation.

[0003] In the prior art, when using a dryer to dry grains, hot air is often blown out of the grains by a fan to remove the moisture. However, in traditional drying mechanisms, the contact area between the grains and the hot air is small, which is not conducive to the rapid evaporation of moisture. As a result, the grains do not receive sufficient heat dissipation, leading to a longer drying time and adversely affecting the working efficiency of the device. Therefore, in order to solve the above problems, this utility model proposes a dryer for drying agricultural grains. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a dryer for drying agricultural grains. By setting up six sets of drying tubes to divert the grain, it is beneficial to increase the contact area between the grain and the hot airflow. At the same time, during the rotation of the fan blades, the grain is brought closer to the first exhaust port, so that the moisture in the grain can be quickly evaporated, improving the drying efficiency of the device, avoiding insufficient drying, and effectively improving the working efficiency of the drying mechanism.

[0005] This utility model provides the following technical solution: a dryer for drying agricultural grains, comprising a drying cylinder, a hot air blower fixedly installed at the bottom of the drying cylinder, a hot air pipe fixedly installed at the top of the hot air blower, the hot air pipe being fixedly sleeved in the inner cavity of the drying cylinder, a first exhaust port evenly opened in the middle of the hot air pipe, six drying tubes evenly fixedly sleeved in the middle of the inner cavity of the drying cylinder and around the hot air pipe, a breathable mesh evenly fixedly installed on the side of the drying tubes, a motor fixedly installed at the top of the drying cylinder, the output shaft of the motor being movably sleeved on the top of the inner cavity of the drying cylinder, and a toothed part fixedly sleeved on the output shaft of the motor. The first gear has six gears that mesh evenly on its outer edge. A rotating shaft is fixedly sleeved on the middle of each gear, and the rotating shaft is movably sleeved with the inner cavity of the drying cylinder. Fan blades are fixedly sleeved on the rotating shaft and fit into the inner cavity of the drying tube. Four second exhaust ports are evenly opened on the side of the drying cylinder. The grain is diverted through the six sets of drying tubes to increase the contact area between the grain and the hot airflow. At the same time, the rotation of the fan blades moves the grain closer to the first exhaust port, so that the moisture in the grain evaporates quickly, improving the drying efficiency, avoiding insufficient drying, and improving the working efficiency of the device.

[0006] Preferably, a feed hopper is fixedly installed on the left side of the drying cylinder, a connecting seat is fixedly installed on the right side of the drying cylinder, and a conveying pipe is fixedly installed on the right side of the drying cylinder above the connecting seat. By pouring the grain to be dried into the feed hopper, the grain enters the bottom of the inner cavity of the drying cylinder. Utilizing the inclined design of the upper part of the inner cavity of the drying cylinder, the grain slides into the conveying pipe, which facilitates the transportation of the grain after drying.

[0007] Preferably, a condenser is fixedly installed on the upper part of the connecting seat and below the conveying pipe. Three condensing tubes are evenly fixedly installed on the upper part of the condenser. The middle part of the condensing tubes is fixedly sleeved in the inner cavity of the conveying pipe. When the grain moves in the inner cavity of the conveying pipe, the condenser is activated to make the condensate flow in the condensing tubes. The three sets of condensing tubes located in the inner cavity of the conveying pipe absorb the heat in the grain, so that the residual heat inside the grain after drying is quickly dissipated, which facilitates the grain to quickly return to room temperature.

[0008] Preferably, the bottom of the conveying pipe is provided with a discharge port located to the right of the condenser, and six support rods are evenly fixedly installed at the bottom of the drying cylinder and the connecting seat. The cooled grain can avoid the oxidation reaction of starch and fat, ensuring the quality and taste of the grain. The grain is then discharged through the discharge port, which is beneficial for the subsequent storage and processing of the grain.

[0009] Compared with the prior art, the advantages of this utility model are as follows:

[0010] 1. The motor drives the transmission mechanism, causing the fan blades to rotate and lift the grain at the bottom of the drying cylinder upwards. The grain enters the drying tube cavity, and a hot air fan introduces hot air into the pipe. The hot air is discharged through the first exhaust port and dries the grain through the breathable mesh. Six sets of drying tubes are used to distribute the grain, increasing the contact area between the grain and the hot air. At the same time, the rotation of the fan blades moves the grain closer to the first exhaust port, allowing the moisture in the grain to evaporate quickly, improving drying efficiency, avoiding insufficient drying of the grain, and improving the working efficiency of the drying mechanism.

[0011] 2. As the grain moves through the inner cavity of the conveying pipe, the condensate flows through the condenser tubes. The three sets of condenser tubes located in the inner cavity of the conveying pipe absorb the heat from the grain, allowing the residual heat inside the grain to dissipate quickly after drying. This helps the grain to return to room temperature quickly, preventing the grain from absorbing moisture again due to excessive temperature and avoiding oxidation of starch and fat in the grain. This ensures the quality and taste of the grain. The cooled grain is discharged through the outlet, facilitating subsequent storage and processing. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the cross-sectional structure of the drying cylinder of this utility model;

[0014] Figure 3 This is a schematic diagram of the internal structure of the drying cylinder of this utility model;

[0015] Figure 4 This is a schematic diagram of the material conveying structure of this utility model;

[0016] Figure 5 This is a schematic diagram of the cross-sectional structure of the material conveying pipe of this utility model.

[0017] In the diagram: 1. Drying cylinder; 2. Hot air blower; 3. Pipeline; 4. First exhaust port; 5. Drying tube; 6. Ventilation mesh; 7. Motor; 8. Gear 1; 9. Gear 2; 10. Rotating shaft; 11. Fan blade; 12. Second exhaust port; 13. Feed hopper; 14. Connecting seat; 15. Conveying pipe; 16. Condenser; 17. Condensing tube; 18. Discharge port; 19. Support rod. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-5 A grain dryer includes a drying cylinder 1, a hot air blower 2 fixedly installed at the bottom of the drying cylinder 1, a hot air pipe 3 fixedly installed on the upper part of the hot air blower 2, the hot air pipe 3 fixedly sleeved in the inner cavity of the drying cylinder 1, a first exhaust port 4 evenly opened in the middle of the hot air pipe 3, six drying pipes 5 evenly fixedly sleeved in the middle of the inner cavity of the drying cylinder 1 and around the hot air pipe 3, and a permeable mesh 6 evenly fixedly installed on the side of the drying pipe 5, a motor 7 fixedly installed at the top of the drying cylinder 1, the output shaft of the motor 7 movably sleeved at the top of the inner cavity of the drying cylinder 1, a gear 8 fixedly sleeved on the output shaft of the motor 7, six gears 9 evenly meshing on the outer edge of the gear 8, a rotating shaft 10 fixedly sleeved in the middle of the gear 9, the rotating shaft 10 movably sleeved in the inner cavity of the drying cylinder 1, a fan blade 11 fixedly sleeved on the rotating shaft 10, the fan blade 11 fitting into the inner cavity of the drying pipe 5, and a second exhaust port 12 evenly opened on the side of the drying cylinder 1. There are four air inlets 12. The motor 7 drives the gear 8 to rotate. The gear 8 meshes with the gear 9 to rotate the rotating shaft 10, which in turn drives the fan blades 11 to rotate. During the rotation of the fan blades 11, the grain at the bottom of the drying cylinder 1 is carried upward and enters the drying tube 5. At the same time, the hot air blower 2 is turned on to introduce hot air into the pipe 3. The hot air is discharged through the first exhaust port 4 and dries the grain through the breathable net 6. The grain is divided by six sets of drying tubes 5 to increase the contact area between the grain and the hot air. At the same time, the rotation of the fan blades 11 carries the grain closer to the first exhaust port 4, so that the moisture in the grain is evaporated quickly, which helps to improve the drying efficiency of the device and avoid insufficient drying of the grain. The working efficiency of the drying mechanism is improved. The steam generated during drying is discharged from the drying cylinder 1 through the second exhaust port 12. The dried grain enters the upper part of the drying cylinder 1 and slides out through the inclined design of the upper part of the drying cylinder 1.

[0020] A feed hopper 13 is fixedly installed on the left side of the drying cylinder 1. Grains to be dried are poured into the feed hopper 13, allowing the grains to enter the bottom of the inner cavity of the drying cylinder 1. A connecting seat 14 is fixedly installed on the right side of the drying cylinder 1. A conveying pipe 15 is fixedly installed on the right side of the drying cylinder 1 above the connecting seat 14. A condenser 16 is fixedly installed on the upper part of the connecting seat 14 and below the conveying pipe 15. Three condensing tubes 17 are evenly fixedly installed on the upper part of the condenser 16. The middle part of the condensing tube 17 is fixedly sleeved in the inner cavity of the conveying pipe 15. An outlet 18 is opened at the bottom of the conveying pipe 15 and to the right of the condenser 16. Six support rods 19 are evenly fixedly installed at the bottom of cylinder 1 and connecting seat 14. When the grain moves in the inner cavity of conveying pipe 15, condenser 16 is activated to make the condensate flow in condenser tube 17. The three sets of condenser tubes 17 located in the inner cavity of conveying pipe 15 absorb the heat in the grain, so that the residual heat inside the grain can be quickly dissipated after drying, which facilitates the grain to quickly return to room temperature, prevents the grain temperature from being too high and causing secondary moisture absorption, and avoids the oxidation reaction of starch and fat in the grain, thereby ensuring the quality and taste of the grain and facilitating the subsequent storage and processing of the grain. The cooled grain is discharged through discharge port 18.

[0021] Working principle: Grains to be dried are poured into the feed hopper 13, allowing them to enter the bottom of the drying cylinder 1. The motor 7 drives the gear 8 to rotate, and the meshing of gear 8 and gear 9 causes the rotating shaft 10 to rotate, thereby driving the fan blades 11 to rotate. During the rotation of the fan blades 11, the grains at the bottom of the drying cylinder 1 are carried upwards and enter the drying tube 5. At the same time, the hot air blower 2 is turned on to introduce hot air into the pipe 3. The hot air is discharged through the first exhaust port 4 and dries the grains through the breathable mesh 6. The steam generated during drying is discharged from the drying cylinder 1 through the second exhaust port 12. The dried grains enter the upper part of the drying cylinder 1. Due to the inclined design of the upper part of the drying cylinder 1, the grains slide into the conveying pipe 15. As the grains move in the conveying pipe 15, the condenser 16 is activated, causing the condensate to flow in the condensing pipe 17. The three sets of condensing pipes 17 located in the conveying pipe 15 absorb the heat from the grains. The cooled grains are discharged through the discharge port 18.

Claims

1. A dryer for drying agricultural grains, comprising a drying drum (1), characterized in that: A hot air blower (2) is fixedly installed at the bottom of the drying cylinder (1). A hot air pipe (3) is fixedly installed on the upper part of the hot air blower (2). The hot air pipe (3) is fixedly sleeved in the inner cavity of the drying cylinder (1). A first exhaust port (4) is evenly opened in the middle of the hot air pipe (3). A drying pipe (5) is evenly fixedly sleeved in the middle of the inner cavity of the drying cylinder (1) and around the hot air pipe (3). There are six drying pipes (5). A breathable mesh (6) is evenly fixedly installed on the side of the drying pipe (5). A motor (7) is fixedly installed on the top of the drying cylinder (1). The output shaft of the motor (7) is movably sleeved. At the top of the inner cavity of the drying cylinder (1), a gear 1 (8) is fixedly sleeved on the output shaft of the motor (7). Gear 2 (9) is uniformly meshed on the outer side of the gear 1 (8). There are six gear 2 (9). A rotating shaft (10) is fixedly sleeved in the middle of the gear 2 (9). The rotating shaft (10) is movably sleeved with the inner cavity of the drying cylinder (1). A fan blade (11) is fixedly sleeved on the rotating shaft (10). The fan blade (11) fits into the inner cavity of the drying tube (5). A second exhaust port (12) is uniformly opened on the side of the drying cylinder (1). There are four second exhaust ports (12).

2. The dryer for drying agricultural grains according to claim 1, characterized in that: A feed hopper (13) is fixedly installed on the left side of the drying cylinder (1), a connecting seat (14) is fixedly installed on the right side of the drying cylinder (1), and a conveying pipe (15) is fixedly installed on the right side of the drying cylinder (1) and above the connecting seat (14).

3. A grain drying machine according to claim 2, characterized in that: A condenser (16) is fixedly installed on the upper part of the connecting seat (14) and below the conveying pipe (15). A condenser tube (17) is evenly fixedly installed on the upper part of the condenser (16). There are three condenser tubes (17), and the middle part of the condenser tube (17) is fixedly sleeved in the inner cavity of the conveying pipe (15).

4. A grain drying machine according to claim 3, characterized in that: The bottom of the conveying pipe (15) and the right side of the condenser (16) are provided with a discharge port (18). The bottom of the drying cylinder (1) and the connecting seat (14) are uniformly fixed with support rods (19), and there are six support rods (19).

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