Electric rapid grain discharging device of grain drying machine and intelligent control method

Abstract

The invention relates to the technical field of grain drying equipment, in particular to an electric rapid grain discharging device of a grain dryer and an intelligent control method, and the electric rapid grain discharging device comprises a grain storage bin, a grain distributing assembly, a conveying assembly and an intelligent regulation and control unit. The grain distributing assembly achieves flexible grain discharging through a rotating disc and an adjusting ring, the conveying assembly adopts a conveying belt with protruding strips to prevent grain from sliding, and the intelligent regulation and control unit combines multi-sensor data and a fuzzy logic algorithm to dynamically adjust the grain discharging speed and flow. Through structure optimization and intelligent control, the grain discharging efficiency, stability and adaptability are remarkably improved, the problems of unstable flow and low intelligent degree in the prior art are solved, and reliable technical support is provided for modernized agricultural production.

Description

Technical Field

[0001] The present invention belongs to the technical field of agricultural machinery automation and intelligent control technology, and specifically relates to an electric fast grain releasing device for a grain dryer and an intelligent control method. Background Art

[0002] After harvesting, grain needs to be dried before being stored in a centralized manner to remove moisture from the grain and ensure its storage time and quality.

[0003] Grain drying equipment is an existing device that mostly uses a humidity meter to detect grain moisture and activates the power components to automatically release grain when the set value is reached, thereby reducing manual intervention and improving production efficiency. In addition, some devices place mechanical components outside the box, which reduces mechanical wear and improves reliability. However, existing technologies often rely on a single humidity detection as a trigger condition and lack the ability to dynamically adjust the grain release speed and flow rate. In actual application, flow instability or blockage may occur. At the same time, its control method is relatively simple and its level of intelligence is limited, making it difficult to flexibly adjust the grain release rhythm according to actual production needs.

[0004] The multifunctional rice drying and storage system can perform multiple functions, including cleaning, drying, short-term mildew prevention, storage, storage, and rapid distribution. The system components are versatile, compact, and cost-effective. However, the design of the rice release process remains relatively traditional, relying primarily on electric gates and conveying devices for release, without intelligent flow control or rapid response mechanisms. This can result in low rice release efficiency during large-scale continuous operations, and overall production progress can be easily affected by human intervention or improper equipment coordination.

[0005] The above issues demonstrate that existing automatic grain-discharging devices for grain dryers have limitations in terms of rapid grain-discharging capabilities, intelligent control capabilities, and adaptability to complex operating conditions. Therefore, the present invention provides an electric rapid grain-discharging device and intelligent control method for a grain dryer, aiming to achieve high efficiency, stability, and intelligent grain-discharging processes, thereby meeting the higher demands of precision and automation in modern agricultural production. Summary of the Invention

[0006] To address the shortcomings of existing grain dryer discharge devices in terms of rapid grain discharge capability and intelligent control, the present invention provides an electric rapid grain discharge device and intelligent control method for a grain dryer. By optimizing the structural design and incorporating an adaptive control algorithm, this device significantly improves grain discharge efficiency and stability, and enables dynamic regulation of the grain discharge flow rate.

[0007] In order to solve the above problems, the technical solution adopted by the present invention is:

[0008] The electric rapid grain discharge device of the grain dryer includes a grain storage bin, a grain distribution component, a conveying component, and an intelligent control unit. The bottom of the grain storage bin is provided with multiple through-holes for discharging grain, and a grain distribution component is installed below each of the grain distribution holes. The grain distribution component includes a rotating disk and a driving mechanism. The center of the rotating disk is fixedly connected to the output shaft of the driving mechanism, and a number of diversion holes are evenly distributed on the surface of the rotating disk. The conveying component includes a conveyor belt arranged below the grain distribution component, with a driving wheel and a driven wheel installed at both ends of the conveyor belt, and the driving wheel is driven by a motor. The intelligent control unit includes a data acquisition module, a calculation module, and an execution module. The data acquisition module is used to detect the grain height and humidity in the grain storage bin and the grain flow on the conveyor belt in real time. The calculation module calculates the optimal values ​​of the grain discharge speed and flow based on the detection data. The execution module adjusts the speed of the driving mechanism and the speed of the conveyor belt according to the calculation results.

[0009] Preferably, the grain distribution assembly also includes an adjusting ring, which is sleeved on the outside of the rotating disk and is relatively fixed to the rotating disk through a threaded connection. A window corresponding to the diversion hole of the rotating disk is opened on the adjusting ring, and the size of the window can be adjusted by rotating the adjusting ring, thereby changing the amount of grain released each time.

[0010] Preferably, the driving mechanism includes a stepper motor and a reducer, the output shaft of the stepper motor is connected to the input end of the reducer through a coupling, the output end of the reducer is fixedly connected to the center position of the rotating disk, and the reducer housing is fixed to the bottom of the grain storage bin by bolts.

[0011] Preferably, a plurality of raised strips are provided on the surface of the conveyor belt, and the raised strips are evenly distributed along the length direction of the conveyor belt. A trough for accommodating grain is formed between two adjacent raised strips. The depth of the trough can be adjusted by replacing raised strips of different heights (three gears of 5mm / 10mm / 15mm are optional).

[0012] Preferably, the intelligent control unit also includes a feedback module, which is installed at the end of the conveyor belt and is used to detect the actual output grain flow and compare it with the target value calculated by the operation module. When the deviation between the two exceeds the set threshold, the feedback module sends a signal to the operation module, and the operation module recalculates and adjusts the speed of the driving mechanism and the conveyor belt.

[0013] Preferably, the data acquisition module includes a laser ranging sensor, a humidity sensor and a photoelectric counter. The laser ranging sensor is installed on the top of the grain storage bin to detect changes in grain height; the humidity sensor is installed on the side wall of the grain storage bin to monitor grain humidity in real time; the photoelectric counter is installed above the conveyor belt to count the amount of grain on the conveyor belt per unit time.

[0014] Preferably, the operation module adopts an adaptive algorithm based on fuzzy logic, and its core formula is:

[0015] Vr =αH+βW-γF

[0016] Among them, V r represents the target speed of the rotating disk, H represents the grain height in the grain storage bin, W represents the grain humidity, F represents the current grain flow on the conveyor belt, α, β, and γ are weight coefficients, and the weight coefficients are optimized online by the gradient descent method. The initial values ​​are set to α = 0.6 ± 0.1, β = 0.3 ± 0.1, and γ = 0.1 ± 0.05.

[0017] Preferably, the execution module includes two independent controllers, the first controller is used to control the speed of the stepper motor, and the second controller is used to adjust the operating frequency of the conveyor belt motor. The two controllers realize data exchange through the CAN bus communication protocol, adopting the CAN 2.0B protocol, and the communication rate is set to 250kbit / s.

[0018] Preferably, the intelligent control unit also includes a display panel, which is installed on the outside of the grain storage bin and is used to display parameters such as grain height, humidity, conveyor belt flow, and rotating disk speed in the grain storage bin in real time, and supports manual input of target flow values.

[0019] The intelligent control method of the electric fast grain-discharging device of the grain dryer comprises the following steps:

[0020] 1. The data acquisition module detects the grain height and humidity in the grain storage bin and the grain flow on the conveyor belt in real time, and transmits the data to the calculation module;

[0021] 2. The calculation module calculates the target rotation speed of the rotary disk and the target speed of the conveyor belt based on the received data and the adaptive algorithm;

[0022] 3. The execution module adjusts the operating parameters of the stepper motor and conveyor belt motor according to the output results of the calculation module;

[0023] 4. The feedback module detects the actual grain output flow and compares it with the target value. When the deviation exceeds the set threshold, the calculation module is triggered to recalculate and adjust the operating parameters;

[0024] 5. The display panel updates various parameters in real time and allows operators to manually adjust the target flow value according to actual needs.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] Through a segmented design, the grain-discharging process is divided into three independent but interconnected stages: storage, distribution, and transportation. Each stage can be independently repaired or replaced. After 100 hours of continuous operation, the segmented structure has reduced average maintenance time from 45 minutes for traditional structures to 12 minutes, significantly reducing the overall failure rate of the device. Furthermore, the introduction of an adjustment ring allows for flexible adjustment of the grain-discharging amount based on actual needs, meeting the requirements of different scenarios.

[0027] The introduction of an intelligent control unit solves the problem of traditional devices relying on a single trigger condition. By integrating multi-sensor data and using fuzzy logic algorithms, it enables dynamic regulation of grain release speed and flow rate. This design not only improves the stability and accuracy of the grain release process but also automatically adjusts operating parameters based on changes in grain moisture and storage height, eliminating the inefficiency caused by human intervention.

[0028] Furthermore, the raised strips on the conveyor belt surface effectively prevent grain from slipping or accumulating during transport, ensuring a continuous grain delivery process. The addition of a feedback module further enhances the system's adaptive capabilities. When actual flow rates deviate from target values, the system can quickly respond and adjust its operating status, ensuring overall operational efficiency.

[0029] To sum up, the present invention significantly improves the performance of the grain dryer's grain discharge device through the combination of structural optimization and intelligent control means, solves the problems of unstable flow, low intelligence and poor adaptability existing in the existing technology, and provides reliable technical support for modern agricultural production. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of the electric fast grain releasing device of the grain dryer of the present invention;

[0031] Figure 2 This is a partial enlarged view of the grain distribution component;

[0032] Figure 3 It is a structural diagram of the conveying component.

[0033] Figure 4 This is a block diagram of the working principle of the intelligent control unit;

[0034] Figure 5 Schematic diagram of the diversion hole and window.

[0035] The accompanying drawings are numbered as follows:

[0036] 1. Grain storage bin; 2. Grain discharge port; 3. Rotating disk; 4. Driving mechanism; 5. Adjusting ring; 6. Diverter hole; 7. Conveyor belt; 8. Driving wheel; 9. Driven wheel; 10. Raised strip; 16. Window. DETAILED DESCRIPTION

[0037] The present invention provides an electric fast grain feeding device and intelligent control method for a grain dryer. Figures 1 to 5 The following is a detailed description of the specific embodiments of the present invention with reference to the accompanying drawings.

[0038] like Figure 1 As shown, the device includes a grain storage bin 1, a grain distribution component, a conveying component and an intelligent control unit. The grain storage bin 1 is the main part of the overall structure. A plurality of through-going grain discharge ports 2 are provided at the bottom thereof, and a grain distribution component is installed below each grain discharge port 2. The core components of the grain distribution component are a rotating disk 3 and a driving mechanism 4. The center position of the rotating disk 3 is fixedly connected to the output shaft of the driving mechanism 4, and a plurality of diversion holes 6 are evenly distributed on the surface of the rotating disk 3. The grain distribution component also includes an adjusting ring 5, which is sleeved on the outside of the rotating disk 3 and is relatively fixed to the rotating disk 3 by a threaded connection. A window 16 corresponding to the diversion hole 6 of the rotating disk 3 is provided on the adjusting ring 5. The size of the window 16 can be adjusted by rotating the adjusting ring 5, thereby changing the amount of grain discharged each time. The conveying component is arranged below the grain distribution component and includes a conveyor belt 7, a driving wheel 8 and a driven wheel 9. The driving wheel 8 and the driven wheel 9 are respectively installed at both ends of the conveyor belt 7. The driving wheel 8 is driven by a motor. The conveyor belt 7 is equipped with several raised strips 10, evenly distributed along its length. Between adjacent strips 10, a trough for accommodating grain is formed. The depth and width of the trough are adjustable to accommodate different types of grain. The intelligent control unit includes a data acquisition module, a calculation module, an execution module, a feedback module, and a display panel. These modules are connected by signal lines and work in coordination.

[0039] During the actual assembly process, a laser rangefinder sensor is installed on the top of grain storage bin 1 to detect changes in the grain height within the bin. A humidity sensor is installed on the sidewall of the bin to monitor the grain moisture in real time. A photoelectric counter is installed above conveyor belt 7 to count the amount of grain on conveyor belt 7 per unit time. These sensors together form the data acquisition module, which transmits the collected data to the calculation module. The calculation module uses an adaptive algorithm based on fuzzy logic, whose core formula is:

[0040] V r =αH+βW-γF

[0041] Among them, V rrepresents the target rotation speed of the rotating disk, H represents the grain height in the grain storage bin, W represents the grain moisture, and F represents the current grain flow rate on the conveyor belt. α, β, and γ are weight coefficients, which are optimized online using the gradient descent method. The initial values ​​of the weight coefficients are set to α = 0.6 ± 0.1, β = 0.3 ± 0.1, and γ = 0.1 ± 0.05. The fuzzy set for height H is defined as (low, medium, high), corresponding to the domain [0, 5 m]. The fuzzy set for moisture W is defined as (dry, moderate, wet), corresponding to the domain [12%, 25%]. The calculation module calculates the target rotation speed of the rotating disk 3 and the target speed of the conveyor belt 7 based on the received data and sends the results to the execution module. The execution module consists of two independent controllers: the first controller controls the speed of the stepper motor, and the second controller adjusts the operating frequency of the conveyor belt 7 motor. The two controllers exchange data via the CAN bus communication protocol, using CAN 2.0B, with a communication rate set to 250 kbit / s. The feedback module, mounted at the end of conveyor belt 7, detects the actual grain flow rate and compares it with the target value calculated by the calculation module. If the absolute value of the flow rate deviation exceeds 15% and lasts for 30 seconds or longer, the feedback module sends a signal to the calculation module, which recalculates and adjusts the speed of drive mechanism 4 and conveyor belt 7. A display panel, mounted on the outside of grain storage silo 1, displays parameters such as grain height and humidity within silo 1, conveyor belt 7 flow rate, and rotating disk 3 speed in real time. It also supports manual input of target flow rates.

[0042] After experiments (samples: wheat, corn, and rice, three types of staple food, 30 repeated tests each), the weight coefficient optimization is based on the following:

[0043]

[0044] The initial value settings of α=0.6±0.1, β=0.3±0.1, and γ=0.1±0.05 can cover more than 90% of working conditions. After online optimization using the gradient descent method, the system response time is ≤1.2s, and the flow control accuracy reaches ±5% (GB / T26887-2011 standard).

[0045] like Figure 2 As shown, the partial enlarged view of the grain distribution component shows in detail the structural design of the rotating disk 3, the adjustment ring 5 and the diverter hole 6. The number and size of the diverter holes 6 evenly distributed on the surface of the rotating disk 3 can be customized according to actual needs to meet the requirements of different grain types and grain release amounts. The adjustment ring 5 is connected to the rotating disk 3 by a threaded connection. When the adjustment ring 5 is rotated, the overlapping area between the window 16 and the diverter hole 6 changes, thereby achieving flexible adjustment of the grain release amount each time. The design of the adjustment ring 5 enables the operator to manually adjust the grain release amount according to the grain type or actual needs, thereby improving the adaptability of the device.

[0046] Figure 3A schematic diagram of the conveyor assembly is shown, highlighting the design features of the conveyor belt 7 and its raised strips 10. The raised strips 10 are evenly distributed along the length of the conveyor belt 7, and the depth and width of the troughs formed between adjacent raised strips 10 can be adjusted by adjusting the height and spacing of the strips 10. This design effectively prevents grain from slipping or accumulating during conveyance, ensuring a continuous and stable grain discharge process.

[0047] Figure 4 The following is a block diagram of the working principle of the intelligent control unit, which describes the connection relationship between the data acquisition module, calculation module, execution module and feedback module. The data acquisition module collects data on the grain height, humidity and grain flow on the conveyor belt 7 in real time through a laser range sensor, a humidity sensor and a photoelectric counter, and transmits the data to the calculation module. The calculation module calculates the target rotation speed of the rotating disk 3 and the target speed of the conveyor belt 7 based on the received data and an adaptive algorithm, and sends the results to the execution module. The execution module adjusts the operating parameters of the stepper motor and the conveyor belt 7 motor respectively according to the output results of the calculation module. The feedback module detects the actual output grain flow and compares it with the target value calculated by the calculation module. When the deviation exceeds the set threshold, the calculation module is triggered to recalculate and adjust the operating parameters.

[0048] Figure 5 This is a schematic diagram of the standalone structure of the adjustment ring 5, illustrating the principle of adjusting the size of the window 16 and its interaction with the rotating disk 3. The adjustment ring 5 is threadedly connected to the rotating disk 3. Rotating the adjustment ring 5 changes the overlapping area between the window 16 and the diverter hole 6, thereby enabling flexible adjustment of the grain discharge amount. The design of the adjustment ring 5 allows the operator to manually adjust the grain discharge amount based on the grain type or actual needs, further improving the adaptability of the device.

[0049] In practice, the present invention operates as follows: First, grain from the grain storage bin 1 enters the grain distribution assembly through the grain discharge port 2. The rotating disk 3 in the distribution assembly rotates under the drive mechanism 4, and the grain is evenly distributed onto the conveyor belt 7 through the diversion holes 6. Driven by the driving wheel 8 and the driven wheel 9, the conveyor belt 7 rotates, and the grain is transported along the trough on the surface of the conveyor belt 7 to the next process. During this process, the data acquisition module monitors the grain height and humidity in the grain storage bin 1 and the grain flow on the conveyor belt 7 in real time, and transmits this data to the calculation module. The calculation module uses the received data and an adaptive algorithm to calculate the target rotation speed of the rotating disk 3 and the target speed of the conveyor belt 7, and sends the results to the execution module. Based on the output of the calculation module, the execution module adjusts the operating parameters of the stepper motor and the conveyor belt 7 motor respectively. The feedback module detects the actual grain output flow rate and compares it with the target value calculated by the calculation module. If the deviation exceeds a set threshold, the calculation module is triggered to recalculate and adjust the operating parameters. The display panel updates various parameters in real time and allows the operator to manually adjust the target flow rate according to actual needs.

[0050] Continuous operation tests at a Northeast corn drying base (ambient temperature -15°C to 25°C, humidity 40% to 85%) showed that the target flow rate was 10 tons / hour, and the actual fluctuation range was 9.52 to 10.48 tons / hour (deviation ≤ ±4.8%). Under high-moisture grain (W=23%), the flow rate automatically decreased to 7.2 tons / hour, and no blockage occurred.

[0051] The system response overshoot is less than 6%, meeting the JB / T 10268-2013 grain machinery control standard.

[0052] The present invention utilizes a segmented design concept, dividing the grain-discharging process into three independent but interrelated steps: storage, distribution, and transportation. Each step can be independently repaired or replaced, significantly reducing the overall failure rate of the device. Furthermore, the introduction of an adjustment ring 5 allows for flexible adjustment of the grain-discharging amount based on actual needs, meeting the requirements of various scenarios. The introduction of an intelligent control unit overcomes the problem of traditional devices relying on a single trigger condition. Through multi-sensor data fusion and fuzzy logic algorithms, dynamic regulation of the grain-discharging speed and flow rate is achieved. This design not only improves the stability and accuracy of the grain-discharging process but also automatically adjusts operating parameters based on changes in grain moisture and storage height, avoiding efficiency reductions caused by human intervention. The raised strips 10 on the surface of the conveyor belt 7 effectively prevent grain from slipping or accumulating during transportation, ensuring the continuity of the grain-discharging process. The addition of a feedback module further enhances the system's adaptability. When the actual flow rate deviates from the target value, the system can quickly respond and adjust the operating status, thereby ensuring the efficiency of the overall operation.

[0053] In order to better enable relevant personnel in this technical field to fully understand and implement the present invention, the specific implementation principle of the present invention is supplemented below with reference to a specific application scenario.

[0054] First, when the grain in the grain storage bin 1 enters the grain distribution assembly through the grain discharge port 2, the driving mechanism 4 drives the rotating disk 3 to rotate at a certain speed, and the grain falls from the grain discharge port 2 at the bottom of the grain storage bin 1 into the diversion holes 6 on the surface of the rotating disk 3. The number and size of the diversion holes 6 are customized according to actual needs, and can meet the requirements of uniform distribution of different types of grain. At the same time, the adjustment ring 5 is matched with the rotating disk 3 through a threaded connection, and the overlapping area between the window 16 and the diversion hole 6 can be manually adjusted by rotating the adjustment ring 5, thereby changing the amount of grain released each time. This design allows the operator to flexibly adjust the amount of grain released according to different types of grain or actual production needs, significantly improving the adaptability of the device.

[0055] Next, after passing through the diversion holes 6, the grain is evenly distributed onto the conveyor belt 7, which is driven by the driving pulley 8 and the driven pulley 9. The surface of the conveyor belt 7 is provided with several raised strips 10, evenly distributed along its length. Between adjacent raised strips 10, a trough for accommodating the grain is formed. The depth and width of the trough can be adjusted according to the type of grain, effectively preventing the grain from slipping or accumulating during transportation, ensuring the continuity and stability of the grain discharge process.

[0056] During this process, the data acquisition module monitors the grain height and humidity within grain storage bin 1, as well as the grain flow on conveyor belt 7, in real time. A laser rangefinder, mounted on the top of grain storage bin 1, detects changes in grain height. A humidity sensor, mounted on the sidewall of grain storage bin 1, monitors grain humidity in real time. A photoelectric counter, mounted above conveyor belt 7, counts the amount of grain on conveyor belt 7 per unit time. These sensors transmit the collected data to the calculation module, which employs an adaptive algorithm based on fuzzy logic. Its core formula is:

[0057] V r =αH+βW-γF

[0058] Among them, V r represents the target rotational speed of the rotating disk, H represents the grain height in the grain storage bin, W represents the grain moisture, and F represents the current grain flow rate on the conveyor belt. α, β, and γ are weight coefficients, which are optimized online using the gradient descent method, with initial values ​​set to α = 0.6 ± 0.1, β = 0.3 ± 0.1, and γ = 0.1 ± 0.05. The computation module calculates the target rotational speed of the rotating disk 3 and the target speed of the conveyor belt 7 based on the received data and sends the results to the execution module. The delay from parameter change to execution of the adjustment is less than 0.5 seconds.

[0059] The execution module includes two independent controllers, the first controller is used to control the speed of the stepper motor, and the second controller is used to adjust the operating frequency of the conveyor belt 7 motor. The two controllers realize data interaction through the CAN bus communication protocol, and adjust the operating parameters of the drive mechanism 4 and the conveyor belt 7 motor respectively. The feedback module is installed at the end of the conveyor belt 7, and is used to detect the actual output grain flow and compare it with the target value calculated by the operation module. When the deviation between the two exceeds the set threshold, the feedback module sends a signal to the operation module, and the operation module recalculates and adjusts the speed of the drive mechanism 4 and the conveyor belt 7. The display panel is installed on the outside of the grain storage bin 1, and is used to display parameters such as grain height, humidity, conveyor belt 7 flow and rotating disk 3 speed in the grain storage bin 1 in real time, and supports the operator to manually adjust the target flow value according to actual needs.

[0060] In addition, the design of the adjustment ring 5 allows the overlapping area of ​​the window 16 and the diverter hole 6 to change when the adjustment ring 5 is rotated, and each rotation of 1° corresponds to a 0.8% change in the window area. The introduction of this mechanical structure not only enables flexible adjustment of the amount of grain released each time, but also significantly improves the applicability of the device in different scenarios. For example, when processing high-humidity grains, the amount of grain released each time can be reduced by reducing the area of ​​the window 16, thereby avoiding clogging problems caused by excessive humidity. When processing dry grains, the area of ​​the window 16 can be appropriately increased to improve the efficiency of grain release; when processing corn with a moisture content greater than 18%, the window area is adjusted to 40% of the diverter hole area. Compared with the unadjusted state (window area 100%), the clogging incidence rate is reduced from 32% to 5%.

[0061] Finally, the intelligent control unit dynamically adjusts the grain release speed and flow rate through multi-sensor data fusion and fuzzy logic algorithms. If the grain level in silo 1 drops, the humidity changes, or the flow rate on conveyor belt 7 fluctuates, the system automatically adjusts operating parameters based on real-time data to ensure the stability and accuracy of the grain release process. Furthermore, the inclusion of a feedback module further enhances the system's adaptive capabilities. If the actual flow rate deviates from the target value, the system quickly responds and adjusts its operating status, ensuring overall operational efficiency.

[0062] In summary, the present invention significantly improves the performance of the grain dryer's grain discharge device by optimizing the structural design and introducing intelligent control means, solves the problems of unstable flow, low intelligence and poor adaptability existing in the prior art, and provides reliable technical support for modern agricultural production.

[0063] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An electric fast grain releasing device for a grain dryer, comprising a grain storage bin (1), characterized in that: The bottom of the grain storage bin (1) is provided with a plurality of through grain discharge ports (2), and a grain distribution assembly is installed below each grain discharge port (2), the grain distribution assembly comprising a rotating disk (3) and a driving mechanism (4), the center position of the rotating disk (3) is fixedly connected to the output shaft of the driving mechanism (4), and a plurality of diversion holes (6) are evenly distributed on the surface of the rotating disk (3); A conveying assembly is provided below the grain distribution assembly, and the conveying assembly comprises a conveying belt (7), a driving wheel (8) and a driven wheel (9). The driving wheel (8) and the driven wheel (9) are respectively installed at both ends of the conveying belt (7), and the driving wheel (8) is driven by a motor. The intelligent control unit includes a data acquisition module, a calculation module, an execution module and a feedback module. The data acquisition module is used to detect the height and humidity of grain in the grain storage bin (1) and the grain flow on the conveyor belt (7). The calculation module calculates the optimal value of the grain release speed and flow based on the detection data. The execution module adjusts the rotation speed of the driving mechanism (4) and the speed of the conveyor belt (7) based on the calculation result. The feedback module is used to detect the actual output grain flow and compare it with the target value.

2. The electric fast grain releasing device for grain dryer according to claim 1, characterized in that: The grain distribution assembly further comprises an adjusting ring (5), the adjusting ring (5) being sleeved on the outside of the rotating disk (3) and being fixed relative to the rotating disk (3) by a threaded connection, the adjusting ring (5) being provided with a window (16) corresponding to the diverter hole (6) of the rotating disk (3), the size of the window (16) being adjustable by rotating the adjusting ring (5), the outer side of the adjusting ring (5) being provided with a scale mark, each scale mark corresponding to a 10% change in the area of ​​the window (16).

3. The electric fast grain releasing device for grain dryer according to claim 1, characterized in that: The driving mechanism (4) includes a stepper motor and a reducer, the stepper motor output shaft is connected to the reducer input end via a coupling, the reducer output end is fixedly connected to the center position of the rotating disk (3), and the reducer housing is fixed to the bottom of the grain storage bin (1) via bolts.

4. The electric fast grain releasing device for grain dryer according to claim 1, characterized in that: The surface of the conveyor belt (7) is provided with a plurality of raised strips (10), which are evenly distributed along the length direction of the conveyor belt (7). A trough for accommodating grain is formed between two adjacent raised strips (10), and the depth of the trough can be adjusted by replacing raised strips of different heights (three gears of 5mm / 10mm / 15mm are optional).

5. The electric fast grain releasing device for grain dryer according to claim 1, characterized in that: The data acquisition module comprises a laser distance sensor, a humidity sensor and a photoelectric counter. The laser distance sensor is installed on the top of the grain storage bin (1) and is used to detect changes in the height of grain. The humidity sensor is installed on the side wall of the grain storage bin (1) and is used to monitor the humidity of grain in real time. The photoelectric counter is installed above the conveyor belt (7) and is used to count the amount of grain on the conveyor belt (7) within a unit time.

6. The electric fast grain releasing device for grain dryer according to claim 1, characterized in that: The operation module adopts an adaptive algorithm based on fuzzy logic, and its core formula is: V r =αH+βW-γF Among them, V r represents the target speed of the rotating disk, H represents the grain height in the grain storage bin, W represents the grain humidity, F represents the current grain flow on the conveyor belt, α, β, and γ are weight coefficients, and the weight coefficients are optimized online by the gradient descent method. The initial values ​​are set to α = 0.6 ± 0.1, β = 0.3 ± 0.1, and γ = 0.1 ± 0.

05.

7. The electric fast grain releasing device for grain dryer according to claim 1, characterized in that: The execution module includes two independent controllers, the first controller is used to control the rotation speed of the stepper motor, and the second controller is used to adjust the operating frequency of the conveyor belt (7) motor. The two controllers realize data exchange through the CAN bus communication protocol, adopting the CAN 2.0B protocol, and the communication rate is set to 250kbit / s.

8. The electric fast grain releasing device for grain dryer according to claim 1, characterized in that: The intelligent control unit further comprises a display panel, which is installed outside the grain storage bin (1) and is used to display in real time the grain height, humidity, flow rate of the conveyor belt (7) and rotation speed parameters of the rotating disk (3) in the grain storage bin (1), and supports manual input of a target flow value.

9. An intelligent control method for an electric rapid grain-discharging device of a grain dryer, characterized in that: The steps include: S1, the data acquisition module detects the grain height and humidity in the grain storage bin (1) and the grain flow on the conveyor belt (7) in real time, and transmits the data to the calculation module; S2, the calculation module calculates the target rotation speed of the rotating disk (3) and the target speed of the conveyor belt (7) based on the received data and the adaptive algorithm; S3, the execution module adjusts the operating parameters of the stepper motor and the conveyor belt (7) motor respectively according to the output results of the operation module; S4. The feedback module detects the actual output grain flow and compares it with the target value, sets the threshold to ±5%, and triggers the calculation module to recalculate and adjust the operating parameters when the grain height H is dynamically adjusted to ±4% to ±7%; S5. The display panel updates various parameters in real time and allows the operator to manually adjust the target flow value according to actual needs. When the detected humidity W is greater than 20%, the target flow value is reduced by 15% to 30%.

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