A partition type discharge uniformity detection device and detection method

Abstract

A device for detecting the uniformity of material discharge in a partitioned manner includes a frame, a discharge hopper fixedly mounted on the upper end of the frame, a bearing seat mounted below the discharge hopper, a hollow shaft fixedly mounted on the bearing seat, and a grid wheel rotatably mounted on the hollow shaft. The grid wheel has baffles at both ends, with multiple radial grid plates arranged between the baffles. An elongated discharge hole is formed in the wall of the hollow shaft. An airflow device is fixedly mounted at one end of the hollow shaft. A turntable is rotatably mounted below the outlet end of the hollow shaft. Multiple weighing sensors are fixedly mounted along the circumference of the turntable, and trays are fixedly pressed onto the weighing sensors. A reduction motor is fixedly mounted on the frame, and a driving bevel gear is fixedly connected to the output shaft of the reduction motor. A first driven bevel gear is fixedly connected to the end of the grid wheel, and a second driven bevel gear is located on the circumference of the turntable. Both the first and second driven bevel gears mesh with the driving bevel gear. This device can detect the uniformity of material discharge in a spreading device.

Description

Technical Field

[0001] This invention relates to the field of modern agricultural machinery and equipment testing technology, specifically to a device and method adapted for detecting the uniformity of solid material distribution in crop seeding, fertilization, and other processes, belonging to the field of modern agricultural technology. Background Technology

[0002] In agricultural production, the entire crop growth cycle includes basic steps such as sowing, fertilization, and harvesting. Early cultivation relied heavily on traditional manual labor. However, with the gradual popularization of mechanization and the emergence of intelligent agriculture, mechanized production is gradually replacing manual labor. In the application of solid materials such as seed broadcasting and granular pesticides, application machinery offers far greater precision in controlling the quantity than manual operation. However, the uniformity of the output cannot be accurately measured with current technology. Equipment and methods for detecting the uniformity of material discharge from application machinery still exist, and the uniformity of material output from application machinery cannot achieve the desired effect through mechanical structure or program settings alone. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned problems in material discharge and to provide a device and method for detecting the uniformity of material discharge in a partitioned manner.

[0004] To achieve the objective of this invention, the following technical solution is adopted: A partitioned material discharge uniformity detection device includes a frame, a discharge hopper fixedly installed at the upper end of the frame, a shaft seat installed below the discharge hopper, a hollow shaft fixedly installed on the shaft seat, and a grid wheel rotatably installed on the hollow shaft. The grid wheel has baffles at both the front and rear, and multiple radial grid plates are arranged between the front and rear baffles. The multiple radial grid plates are evenly distributed on the circumference, dividing the grid wheel into multiple identical grids. The bottom end of the grid plate contacts and engages with the hollow shaft. The grid wheel is located below the discharge hopper. An elongated discharge hole is opened on the wall of the hollow shaft, and both ends of the grid plate... Located within the length of the feeding elongated hole, which is offset from the top of the hollow shaft, an airflow device is fixedly installed at one end of the hollow shaft, and the other end of the hollow shaft is the outlet, which is open. A turntable is rotatably installed below the outlet end, and multiple weighing sensors are fixedly installed on the circumference of the turntable. A tray is fixedly pressed on the weighing sensor, and multiple trays are located on a circumference. A geared motor is fixedly installed on the frame, and a driving bevel gear is fixedly connected to the output shaft of the geared motor. A first driven bevel gear is fixedly connected to the end of the grid wheel, and a second driven bevel gear is on the circumference of the turntable. Both the first and second driven bevel gears mesh with the driving bevel gear.

[0005] Furthermore, the airflow device is a high-pressure fan or a high-pressure air source.

[0006] Furthermore, the hollow shaft has a downward-curved outlet end.

[0007] Furthermore, the top of the curved section is provided with multiple air holes.

[0008] Furthermore, the tray has a flexible pad at the bottom.

[0009] A method for detecting the uniformity of material discharge in a partitioned manner, using the aforementioned partitioned material discharge uniformity detection device, includes the following steps: S1: Place the seeding equipment on top of the platform; S2: Start the speed-regulating motor to make it rotate at a constant speed, and the active bevel gear drives the turntable and the grid wheel to rotate; S3: Start feeding, start the airflow device, the material discharged by the spreading equipment falls into the grid corresponding to the feeding hopper through the discharge hopper. No material accumulates in the discharge hopper. The grid wheel continues to rotate. Within the range of rotation angle less than 45 degrees, the bottom of the grid is connected to the feeding elongated hole, and the material falls into the hollow shaft through the feeding elongated hole. S4: The airflow from the airflow device blows the material into the tray, and the weighing sensor obtains the weight of the material entering the tray based on the change in the weight of the tray. S5: The grid wheel and turntable rotate continuously, causing the material in the adjacent grids to be discharged into the adjacent trays; S6: The uniformity of material discharge is obtained by measuring the weight difference of the materials in each tray.

[0010] Furthermore, by adjusting the motor speed to regulate the sampling rate, the coefficient of variation of uniformity under different sampling rates was statistically compared.

[0011] The positive and beneficial technical effects of this invention are as follows: This device can detect the uniformity of material feeding in the spreading equipment, which will be described in detail with reference to specific implementation methods. Attached Figure Description

[0012] Figure 1 This is one of the overall schematic diagrams of the present invention.

[0013] Figure 2 welding wire Figure 1 Enlarged view of part of the image.

[0014] Figure 3 This is a schematic diagram of a hollow shaft.

[0015] Figure 4 This is the second overall schematic diagram of the present invention.

[0016] Figure 5 This is a schematic diagram of a grille wheel. Detailed Implementation

[0017] To more fully explain the implementation of the present invention, implementation examples are provided. These implementation examples are merely illustrative of the present invention and do not limit the scope of the present invention.

[0018] The labels in the attached diagram are as follows: 1: Frame; 2: Discharge hopper; 3: Hollow shaft; 301: Discharge elongated hole; 4: Grille wheel; 5: Grille plate; 6: First driven bevel gear; 7: Driven bevel gear; 8: Gear motor; 9: Turntable; 10: Tray; 11: Second driven bevel gear; 12: Bending section; 13: Shaft seat; 14: Baffle; 15: High-speed fan.

[0019] As shown in the attached diagram, a partitioned material discharge uniformity testing device includes a frame 1, which can also be called a platform. A discharge hopper 2 is fixedly installed on the upper end of the frame. The discharge hopper does not store material but serves as a guide channel from the discharge of the spreading equipment to the grid wheel. A bearing seat 13 is installed below the discharge hopper, and a hollow shaft 3 is fixedly installed on the bearing seat. A grid wheel 4 is rotatably installed on the hollow shaft. The grid wheel has baffles 14 at both the front and rear. Multiple radial grid plates 5 are arranged between the front and rear baffles. The multiple radial grid plates are evenly distributed on the circumference. The grid wheel is divided into multiple identical grids. The bottom end of the grid plate 5 contacts and engages with the hollow shaft, ensuring that material does not flow between adjacent grids. The grid wheel is located below the discharge hopper 2. An elongated discharge hole 301 is provided on the wall of the hollow shaft. Both ends of the grid plate are within the length of the discharge hole, which is offset from the top of the hollow shaft. This ensures that all material entering the grid is discharged into the hollow shaft through the discharge hole. An airflow device, such as a high-pressure fan or a high-pressure air source, is fixedly installed at one end of the hollow shaft. In this embodiment, a high-pressure fan is used as the airflow device. The other end of the hollow shaft is the outlet, which is an opening. The outlet end of the hollow shaft has a downward-curved section 12. Multiple air holes are provided at the top of the curved section, allowing high-pressure airflow to flow out from the top when it reaches the curved section. The material falls due to gravity, ensuring that it is not disturbed by the airflow during its descent and reliably lands in the tray. A turntable is rotatably mounted below the outlet end. Multiple load cells are fixedly mounted along the circumference of the turntable. These load cells can be wirelessly transmitted and are commercially available. Trays 10 are fixedly pressed onto the load cells, with multiple trays located on a circumference. A geared motor 8 is fixedly mounted on the frame. A driving bevel gear 7 is fixedly connected to the output shaft of the geared motor. A first driven bevel gear 6 is fixedly connected to the end of the grid wheel, and a second driven bevel gear 11 is located on the circumference of the turntable. Both the first and second driven bevel gears mesh with the driving bevel gear. By adjusting the transmission ratio of the driving bevel gear, the first driven bevel gear, and the second driven bevel gear, during the rotation of the grid wheel and turntable, the material in adjacent grids is discharged into the hollow shaft and then blown into adjacent trays by the airflow. A flexible pad is placed at the bottom of each tray to prevent errors caused by material splashing.

[0020] A method for detecting the uniformity of material discharge in a partitioned manner, using the aforementioned partitioned material discharge uniformity detection device, includes the following steps: S1: Place the seeding equipment on top of the platform; S2: Start the speed-regulating motor to make it rotate at a constant speed, and the active bevel gear drives the turntable and the grid wheel to rotate; S3: Start feeding, start the airflow device, the material discharged by the spreading equipment falls into the grid corresponding to the feeding hopper through the discharge hopper. No material accumulates in the discharge hopper. The grid wheel continues to rotate. Within the range of rotation angle less than 45 degrees, the bottom of the grid is connected to the feeding elongated hole, and the material falls into the hollow shaft through the feeding elongated hole. S4: The airflow from the airflow device blows the material into the tray, and the weighing sensor obtains the weight of the material entering the tray based on the change in the weight of the tray. S5: The grid wheel and turntable rotate continuously, causing the material in the adjacent grids to be discharged into the adjacent trays; S6: By statistically analyzing the weight differences of materials in each pallet, the uniformity of material distribution is obtained, and the coefficient of variation (CV) of uniformity is calculated. The CV is: CV (%) = (Standard Deviation / Mean) × 100%

[0021] The sampling rate was adjusted by regulating the motor speed, and the coefficient of variation of uniformity under different sampling rates was statistically compared.

[0022] After a detailed description of the embodiments of the present invention, those skilled in the art will clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent applications. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the scope of the technical solution of the present invention, and the present invention is not limited to the embodiments of the examples given in the specification.

Claims

1. A partitioned material discharge uniformity detection device, comprising a frame, characterized in that: A discharge hopper is fixedly installed at the upper end of the frame, and a bearing seat is installed below the discharge hopper. A hollow shaft is fixedly installed on the bearing seat, and a grid wheel is rotatably installed on the hollow shaft. The grid wheel has baffles at both the front and rear, and multiple radial grid plates are arranged between the front and rear baffles. The multiple radial grid plates are evenly distributed on the circumference, and the bottom end of the grid plate contacts and engages with the hollow shaft. The grid wheel is located below the discharge hopper, and an elongated discharge hole is opened on the wall of the hollow shaft. The two ends of the grid plate are located within the length of the discharge hole, which is offset from the top of the hollow shaft. An airflow device is fixedly installed at one end of the hollow shaft, and the other end of the hollow shaft is the outlet. The outlet end is open, and a turntable is rotatably installed below the outlet end. Multiple weighing sensors are fixedly installed on the circumference of the turntable, and a tray is fixedly pressed on the weighing sensor. The multiple trays are located on a circumference. A geared motor is fixedly installed on the frame, and a driving bevel gear is fixedly connected to the output shaft of the geared motor. A first driven bevel gear is fixedly connected to the end of the grid wheel, and the turntable is a second driven bevel gear. Both the first and second driven bevel gears mesh with the driving bevel gear.

2. The partition-type material discharge uniformity detection device according to claim 1, characterized in that: The airflow device is a high-pressure fan or a high-pressure air source.

3. The partition-type material discharge uniformity detection device according to claim 1, characterized in that: The hollow shaft has a downward-curved outlet end.

4. The partition-type material discharge uniformity detection device according to claim 3, characterized in that: The top of the curved section has multiple air holes.

5. The partition-type material discharge uniformity detection device according to claim 1, characterized in that: The tray has a flexible pad at the bottom.

6. A method for detecting the uniformity of material discharge in a partitioned manner, using the partitioned material discharge uniformity detection device as described in claim 1, characterized in that: Includes the following steps: S1: Place the seeding equipment on top of the platform; S2: Start the speed-regulating motor to make it rotate at a constant speed, and the active bevel gear drives the turntable and the grid wheel to rotate; S3: Start feeding, start the airflow device, the material discharged by the spreading equipment falls into the grid corresponding to the feeding hopper through the discharge hopper. No material accumulates in the discharge hopper. The grid wheel continues to rotate. Within the range of rotation angle less than 45 degrees, the bottom of the grid is connected to the feeding elongated hole, and the material falls into the hollow shaft through the feeding elongated hole. S4: The airflow from the airflow device blows the material into the tray, and the weighing sensor obtains the weight of the material entering the tray based on the change in the weight of the tray. S5: The grid wheel and turntable rotate continuously, causing the material in the adjacent grids to be discharged into the adjacent trays; S6: The uniformity of material discharge is obtained by measuring the weight difference of the materials in each tray.

7. The method for detecting the uniformity of material discharge in a partitioned manner according to claim 6, characterized in that: The sampling rate was adjusted by regulating the motor speed, and the coefficient of variation of uniformity under different sampling rates was statistically compared.

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