Heat supply device of grain dryer

Abstract

The utility model discloses a heat supply device of a grain dryer, which comprises a rack and four first bearing seats mounted on two sides of the top end of the rack, a driven shaft is rotatably mounted between the two first bearing seats in the same Y-axis direction, driving wheels are fixed at two ends of the surface of the driven shaft, a charging bucket is mounted on the upper surfaces of the four driving wheels, and the charging bucket is mounted on the top end of the rack. A belt driving unit used for driving one of the driven shafts to rotate is installed at the bottom of the rack, a bracket is installed on one side of the top end of the rack, and an air heating module used for blowing hot air into the material tank is installed at the top end of the bracket. According to the utility model, the rotation of the charging bucket and the wind heat module are simultaneously driven by one motor, so that unnecessary electric power waste is reduced, and the driving mode of one motor means that the total energy consumption of the system can be reduced under the same working condition, so that the overall energy utilization efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of grain drying, in particular to a heating device of a grain dryer. Background Art

[0002] The air-heating device of the grain dryer is crucial in the grain drying process. Its main function is to provide stable and uniform hot air to ensure proper control of the temperature and humidity of the grain when drying. The air-heating device achieves effective drying of the grain by sucking the outside air into the system and heating it before delivering it to the dryer. First, the fan of the air-heating device is responsible for introducing the outside air and sending it to the heater. The heater can choose different methods such as electric heating, gas heating or steam heating as needed to heat the air to the set temperature. Then, the hot air is evenly distributed around the grain through the air duct to promote the evaporation and drying of moisture. During the whole process, moisture will be carried away with the flow of hot air, so an exhaust port needs to be set to discharge moisture in time to prevent it from flowing back into the drying environment. However, when this type of device is used in conjunction with a grain dryer, the blower heating device and the grain dryer's material tank each require a motor to drive the operation. The two motors working at the same time means that more electricity is required in the grain drying process. Especially when processing large quantities of grain, the energy consumption problem will become particularly prominent. During operation and maintenance, the operator also needs to monitor the operating status of multiple motors at the same time, which increases the difficulty of dryer management and the probability of error. Utility Model Content

[0003] The purpose of the utility model is to provide a heating device for a grain dryer, in which a belt drive unit and a driving wheel drive a material tank to rotate to turn the grain material, and a part of the rotational power of the belt drive unit is transmitted to the wind heating module through a spline telescopic shaft and a pulley speed-increasing transmission structure, so that the wind heating module actively blows hot air toward the inside of the material tank, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present utility model provides the following technical solutions: A heating device for a grain dryer, comprising a frame and four bearing seats I installed on both sides of the top of the frame. A driven shaft is rotatably installed between two of the bearing seats I in the same Y-axis direction. Driving wheels are fixed at both ends of the surface of the driven shaft. A material tank is installed on the upper surfaces of the four driving wheels. A belt drive unit for driving one of the driven shafts to rotate is installed at the bottom of the frame. A bracket is installed on one side of the top of the frame, and a wind-heat module for blowing hot air into the interior of the material tank is installed at the top of the bracket. A spline telescopic shaft is rotatably installed on one side of the bottom of the frame. One end of the spline telescopic shaft is connected to the output end of the belt drive unit, and the other end of the spline telescopic shaft is installed with a pulley speed increasing transmission structure for maintaining power connection with the input end of the wind-heat module. A PLC controller is installed on one side of the surface of the frame, and the output end of the PLC controller is electrically connected to the input ends of the belt drive unit and the wind-heat module.

[0005] Preferably, a tank support frame is fixed on one side of the top of the frame. Openings are provided at both ends of the material tank. The material tank is rotatably connected to the tank support frame. A manhole concentric with the material tank is installed on the outer wall of one side of the tank support frame.

[0006] Preferably, the belt drive unit consists of a motor and a belt transmission structure. The motor is installed at the bottom of the frame, and the belt transmission structure is used to connect one of the driving wheels and the output end of the belt drive unit.

[0007] Preferably, the spline telescopic shaft includes a bearing seat II fixed at the bottom of the frame, an inner spline shaft rotatably installed inside the bearing seat II, and an outer spline shaft installed at one end inside the inner spline shaft. One end of the inner spline shaft is connected to the output end of the motor.

[0008] Preferably, the wind-heat module includes an air duct fixed at the top of the bracket, a return air box installed on the outer wall of one side of the air duct, and a fan impeller unit rotatably installed inside the air duct. Electric heating tubes are installed inside the return air box. The input ends of the electric heating tubes are electrically connected to the output end of the PLC controller. The fan impeller unit maintains power transmission with the outer spline shaft through the pulley speed increasing transmission structure.

[0009] Preferably, the pulley speed increasing transmission structure includes a driven pulley fixed at one end of the central axis of the electric heating tube and a driving pulley installed at one end of the outer spline shaft. The diameter of the driving pulley is larger than that of the driven pulley.

[0010] Preferably, the bottom end of the bracket is slidably matched with the top of the frame, and a screw manual linear module for driving the bracket and the wind-heat module to slide horizontally is installed on one side of the top of the frame.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: The heating device of the grain dryer is provided with structures such as a belt drive unit, a pulley speed-increasing transmission structure, and a spline telescopic shaft that cooperate with each other. By using one motor to drive the rotation of the material tank and the air-heat module simultaneously, unnecessary power waste is reduced. The driving method of one motor means that under the same working conditions, the total energy consumption of the system can be reduced, thereby improving the overall energy utilization efficiency, reducing production costs, and the driving of a single motor ensures the running synchronization between the air-heat module and the material tank. This synchronization enables hot air to more effectively wrap the grain, promoting the uniform evaporation of moisture and avoiding the decline in grain quality caused by uneven drying. At the same time, when the rotation speed of the material tank matches the operation of the air-heat module, the drying efficiency can be significantly improved, ensuring that each batch of grain can be fully dried. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the front view structural schematic diagram of the utility model;

[0013] Figure 2 is the three-dimensional structural schematic of the utility model Figure 1 ;

[0014] Figure 3 is the three-dimensional structural schematic of the utility model Figure 2 ;

[0015] Figure 4 is the three-dimensional structural schematic of the utility model Figure 3 ;

[0016] Figure 5 is the three-dimensional structural schematic diagram of the utility model after the material tank is removed;

[0017] Figure 6 is the three-dimensional structural schematic diagram of the air-heat module of the utility model.

[0018] In the figure: 1, frame; 101, tank support; 102, manhole; 2, bearing seat one; 3, driven shaft; 4, driving wheel; 5, material tank; 6, spline telescopic shaft; 601, bearing seat two; 602, internal spline shaft; 603, external spline shaft; 7, belt drive unit; 8, pulley speed-increasing transmission structure; 9, PLC controller; 10, screw manual linear module; 11, bracket; 12, air-heat module; 1201, air duct; 1202, single fan impeller; 1203, return air box; 1204, electric heating tube. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-6 , an embodiment provided by the present utility model: A heating device for a grain dryer, including a frame 1 and four bearing seats one 2 installed on both sides of the top of the frame 1. A driven shaft 3 is rotatably installed between two bearing seats one 2 in the same Y-axis direction. Driving wheels 4 are fixed at both ends of the surface of the driven shaft 3. A material tank 5 is installed on the upper surfaces of the four driving wheels 4. The four driving wheels 4 jointly support the material tank 5 and drive it to rotate.

[0021] A belt drive unit 7 for driving one of the driven shafts 3 to rotate is installed at the bottom of the frame 1. A bracket 11 is installed on one side of the top of the frame 1, and a hot air module 12 for blowing hot air into the interior of the material tank 5 is installed at the top of the bracket 11. A spline telescopic shaft 6 is rotatably installed on one side of the bottom of the frame 1. One end of the spline telescopic shaft 6 is connected to the output end of the belt drive unit 7, and a belt pulley speed increasing transmission structure 8 for maintaining power connection with the input end of the hot air module 12 is installed at the other end of the spline telescopic shaft 6. A PLC controller 9 is installed on one side of the surface of the frame 1. The output end of the PLC controller 9 is electrically connected to the input ends of the belt drive unit 7 and the hot air module 12;

[0022] A tank support 101 is fixed on one side of the top of the frame 1. Openings are provided at both ends of the material tank 5. The material tank 5 is rotatably connected to the tank support 101. A manhole 102 concentric with the material tank 5 is installed on the outer wall of one side of the tank support 101. During feeding and discharging, the staff can open the manhole 102 to keep one end of the material tank 5 in an open state at all times to facilitate the entry and exit of materials; the tank support 101 is used to assist the material tank 5 in rotating and ensure the rotation stability of the material tank 5;

[0023] The belt drive unit 7 consists of a motor and a belt drive structure. The motor is installed at the bottom of the frame 1, and the belt drive structure is used to connect one of the driving wheels 4 and the output end of the belt drive unit 7;

[0024] The spline telescopic shaft 6 includes a bearing seat 601 fixed at the bottom of the frame 1, an inner spline shaft 602 rotatably installed inside the bearing seat 601, and an outer spline shaft 603 installed at one end inside the inner spline shaft 602, one end of the inner spline shaft 602 is interconnected with the output end of the motor, and the wind heating module 12 includes an air duct 1201 fixed at the top of the bracket 11, a circular bellows 1203 installed on the outer wall of one side of the air duct 1201, and a fan impeller monomer 1202 rotatably installed inside the air duct 1201, an electric heating tube 1204 is installed inside the circular bellows 1203, the input end of the electric heating tube 1204 is electrically connected to the output end of the PLC controller 9, and the fan impeller monomer 1202 maintains power transmission with the outer spline shaft 603 through a pulley speed-increasing transmission structure 8;

[0025] The motor in the belt drive unit 7 sequentially drives the inner spline shaft 602 and the outer spline shaft 603 to rotate, and the rotational power of the outer spline shaft 603 is transmitted to the fan impeller monomer 1202 through the pulley speed-increasing transmission structure 8. When the electric heating tube 1204 actively heats the air in the electric heating tube 1204, the speed-increasingly rotating fan impeller monomer 1202 actively blows the hot air into the material tank 5 to achieve the purpose of drying the material.

[0026] The pulley speed-increasing transmission structure 8 includes a driven pulley fixed to one end of the central axis of the electric heating tube 1204 and a driving pulley installed at one end of the external spline shaft 603. The diameter of the driving pulley is larger than that of the driven pulley. The advantage of the pulley speed-increasing transmission structure 8 is that it can increase the output speed. By selecting a suitable pulley combination, the low speed of the belt drive unit 7 can be effectively converted into a higher output speed, so that the fan impeller monomer 1202 can blow air quickly.

[0027] The bottom end of the bracket 11 slides with the top of the frame 1. A screw manual linear module 10 is installed on one side of the top of the frame 1 for driving the bracket 11 and the wind heating module 12 to slide horizontally. The staff can manually operate the screw manual linear module 10 to drive the bracket 11 and the wind heating module 12 to move horizontally through the screw manual linear module 10 to change the distance between the wind heating module 12 and the end of the material tank 5. During this process, the outer spline shaft 603 slides relatively inside the inner spline shaft 602 and still maintains a state of power connection.

[0028] When the embodiment of the present application is in use, the staff first puts the grain material to be dried into the material tank 5, and then the staff turns on the belt drive unit 7 through the PLC controller 9 to work. In this process, the speed of the motor in the belt drive unit 7 is controlled by the PLC controller 9, and a part of the rotational power of the belt drive unit 7 is transmitted to one of the driven shafts 3. Because the driving wheel 4 and the material tank 5 are in contact with each other, the driven shaft 3 and the driving wheel 4 cause the material tank to start rotating. This rotational motion causes the grain material to be continuously turned over inside the material tank 5, ensuring that the hot air generated by the wind heating module 12 can evenly contact the grain, thereby improving the drying efficiency. At the same time, another part of the rotational power of the belt drive unit 7 is transmitted to the spline telescopic shaft 6, and the spline telescopic shaft 6 uses the belt The pulley speed-increasing transmission structure 8 transmits power to the wind-heating module 12. The wind-heating module 12 actively inhales external air and heats the air through its own heating device. The hot air is then sent into the interior of the material tank 5 and directly contacts the grain. During the drying process, the flow of hot air takes away the moisture in the grain. During this process, the spline telescopic shaft 6 connects the pulley speed-increasing transmission structure 8, the belt drive unit 7 and the wind-heating module 12, so that dynamic synchronization can be achieved between them. Both the rotation speed of the material tank 5 and the conveying speed of the hot air can be adjusted in real time through the PLC controller 9 to keep the device in the best drying state. After the set drying process is completed, the PLC controller 9 will stop the operation of the belt drive unit 7 and cut off the power supply to each component.

Claims

1. A heating device for a grain dryer, characterized in that: It includes a frame (1) and four bearing seats one (2) installed on both sides at the top of the frame (1). A driven shaft (3) is rotatably installed between two of the bearing seats one (2) in the same Y-axis direction. Driving wheels (4) are fixed at both ends of the surface of the driven shaft (3). A material tank (5) is installed on the upper surfaces of the four driving wheels (4). A belt drive unit (7) for driving one of the driven shafts (3) to rotate is installed at the bottom of the frame (1). A bracket (11) is installed on one side at the top of the frame (1), and a hot air module (12) for blowing hot air into the interior of the material tank (5) is installed at the top of the bracket (11). A spline telescopic shaft (6) is rotatably installed on one side at the bottom of the frame (1). One end of the spline telescopic shaft (6) is connected to the output end of the belt drive unit (7), and a belt pulley speed increasing transmission structure (8) for maintaining power connection with the input end of the hot air module (12) is installed at the other end of the spline telescopic shaft (6). A PLC controller (9) is installed on one side of the surface of the frame (1). The output end of the PLC controller (9) is electrically connected to the input ends of the belt drive unit (7) and the hot air module (12).

2. The heat supply device of a grain dryer according to claim 1, characterized in that: A tank support frame (101) is fixed on one side at the top of the frame (1). Openings are provided at both ends of the material tank (5). The material tank (5) is rotatably connected to the tank support frame (101). A manhole (102) concentric with the material tank (5) is installed on the outer wall of one side of the tank support frame (101).

3. The heat supply device of a grain dryer according to claim 1, characterized in that: The belt drive unit (7) consists of a motor and a belt transmission structure. The motor is installed at the bottom of the frame (1), and the belt transmission structure is used to connect one of the driving wheels (4) and the output end of the belt drive unit (7).

4. The heating device of a grain dryer according to claim 3, characterized in that: The spline telescopic shaft (6) includes a bearing seat two (601) fixed at the bottom of the frame (1), an inner spline shaft (602) rotatably installed inside the bearing seat two (601), and an outer spline shaft (603) installed at one end inside the inner spline shaft (602). One end of the inner spline shaft (602) is connected to the output end of the motor.

5. The heating device of a grain dryer according to claim 4, characterized in that: The hot air module (12) includes an air duct (1201) fixed at the top of the bracket (11), a return air box (1203) installed on the outer wall of one side of the air duct (1201), and a fan impeller unit (1202) rotatably installed inside the air duct (1201). An electric heating tube (1204) is installed inside the return air box (1203). The input end of the electric heating tube (1204) is electrically connected to the output end of the PLC controller (9). The fan impeller unit (1202) maintains power transmission with the outer spline shaft (603) through the belt pulley speed increasing transmission structure (8).

6. The heating device of a grain dryer according to claim 5, characterized in that: The belt pulley speed increasing transmission structure (8) includes a driven belt pulley fixed at one end of the central axis of the electric heating tube (1204) and a driving belt pulley installed at one end of the outer spline shaft (603). The diameter of the driving belt pulley is larger than that of the driven belt pulley.

7. The heating device of a grain dryer according to claim 1, characterized in that: The bottom end of the bracket (11) is in sliding fit with the top end of the frame (1), and a screw manual linear module (10) for driving the bracket (11) and the air-heat module (12) to slide horizontally is installed on one side of the top end of the frame (1).

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