A Fresh Sweet Corn Harvesting and Cleaning System Based on Flexible Wave Bands

Abstract

This application provides a fresh corn harvesting and cleaning system based on a flexible undulating belt, including a conveyor belt, a drive device for driving the conveyor belt, baffles, an excitation rotor, and an air-inducing device. The system uses an asymmetric excitation rotor to periodically lift the conveyor belt, forcing the corn ears to become unstable and slightly roll forward, thus creating a gap between the corn ears and the baffles. At this time, the air-inducing device releases a flexible pulsed airflow into this gap, blowing up impurities such as husks that were originally compacted in the triangular dead zone and at the bottom of the ears into a suspended state, which are then discharged from the machine under negative pressure by a suction fan. This system eliminates the cleaning dead zones of traditional rigid baffles, achieving low-damage flexible protection of the ears while significantly improving impurity removal efficiency.

Description

Technical Field

[0001] This application belongs to the technical field of corn conveying devices, and particularly relates to a fresh corn harvesting and cleaning system based on a flexible undulating belt. Background Technology

[0002] Due to its rich nutritional value and good taste, the market demand for fresh sweet corn has continued to grow in recent years. Mechanized harvesting of fresh sweet corn has extremely strict requirements on damage rate and impurity content, requiring a kernel breakage rate of ≤2% and a cleaning impurity rate of ≤1.5%. However, the optimal harvesting window for fresh sweet corn is only 3-5 days. If it is not harvested in a timely and efficient manner, its sugar will quickly convert into starch, losing its fresh commercial value. Therefore, achieving efficient, low-damage, and low-impurity mechanized harvesting is an urgent need for the development of the fresh sweet corn industry. Current fresh sweet corn harvesting and cleaning processes still face the following technical problems: Most existing ear conveyor belts use fully enclosed solid baffles. However, in actual field operations, flat, broken leaves and slender stalks, once falling into the closed triangular dead zone between the back of the solid baffle and the conveyor belt, are repeatedly crushed and stuck together by the heavy ears above. Impurities in these triangular dead zones are difficult to remove by a single airflow, ultimately resulting in the overall impurity content failing to meet the standard. In severe cases, it can even lead to impurity accumulation and conveyor belt jamming. Summary of the Invention

[0003] Purpose of the invention: This application discloses a fresh corn harvesting and cleaning system based on a flexible undulating belt. The cleaning system can drive the conveyor to move in the direction of the conveyor belt by vibrating the rotor to lift the conveyor belt, so that the conveyor and the baffle are separated to form a gap. The high-pressure air source can blow away debris and impurities such as husks at the bottom of the ears in the triangular area formed by the conveyor, the baffle and the conveyor belt.

[0004] This application discloses a fresh corn harvesting and cleaning system based on a flexible undulating belt, including a conveyor belt and a drive device for driving the conveyor belt, and further including: A baffle, one end of which is connected to the upper surface of the conveyor belt; A vibrating rotor is disposed below the lower surface of the conveyor belt. The vibrating rotor is used to lift the conveyor belt and drive the conveyed material to form a gap between the conveyor and the baffle. An air-blowing device is used to output airflow to blow away debris in the gap between the conveyor and the baffle.

[0005] Preferably, the vibrating rotor is a cam structure, and when the vibrating rotor rotates and lifts the conveyor belt to the highest point, the contact point between the vibrating rotor and the conveyor belt is located between the baffle and the conveyed material.

[0006] Preferably, it also includes a constraint plate, which is disposed on the front side of the excitation rotor along the direction of conveyor belt movement, and the constraint plate is used to limit the lifting height of the conveyor belt below the constraint plate.

[0007] Preferably, when the vibrating rotor lifts the conveyor belt to its highest point, the height of the contact point between the vibrating rotor and the conveyor belt relative to the horizontal plane is not less than the height of the contact point between the constraint plate and the conveyor belt relative to the horizontal plane.

[0008] Preferably, a number of baffles are equidistantly arranged on the upper surface of the conveyor belt, and at least one set of vibrating rotors are arranged below the lower surface of the conveyor belt. During the process of any baffle moving from the bottom end of the conveyor belt to the top end of the conveyor belt, it is lifted to the highest point by at least one set of vibrating rotors.

[0009] Preferably, the gas inrush device includes a gas inrush cylinder and a gas source. The gas inrush cylinder is connected to the main gas pipe through a branch pipe, and the main gas pipe is connected to the gas source. A branch valve for controlling the on / off state of the branch pipe is installed in the branch pipe, and a main pulse valve is provided at the connection between the main gas pipe and the branch pipe. The air inlet cylinder is set on one or both sides of the vibrating rotor along the direction of the conveyor belt movement, with the air outlet of the air inlet cylinder facing the contact point with the conveyor belt when the vibrating rotor rotates and lifts the conveyor belt.

[0010] Preferably, the air outlet of the air vent continuously outputs airflow, and when the target vibrating rotor is in the lifting conveyor belt stage, the airflow output towards the air outlet of the air vent towards the target vibrating rotor increases.

[0011] Preferably, the conveyor belt is provided with perforated through holes; the baffle is composed of several comb teeth arranged side by side, with gaps between adjacent comb teeth, and the horizontal cross-sectional area of ​​the comb teeth gradually decreases from the end near the conveyor belt to the end far from the conveyor belt.

[0012] Preferably, the end of the baffle away from the conveyor belt is inclined in the direction of the conveyor belt's movement.

[0013] Preferably, the conveyor belt is provided with an outer shell, and the outer shell is provided with a suction fan, which is used to collect the debris blown away by the air surge device.

[0014] Beneficial effects: First, an excitation rotor is arranged below the lower surface of the conveyor belt. During the conveying process, when the excitation cam lifts the conveyor belt upward, the rising edge of the cam group of the excitation rotor gradually contacts and lifts the flexible conveyor belt. When the excitation rotor rotates and lifts the conveyor belt to the highest point, the contact point between the excitation rotor and the conveyor belt is located between the baffle and the conveyed object. The height of the contact point between the excitation rotor and the conveyor belt relative to the horizontal plane is not less than the height of the contact point between the constraint plate and the conveyor belt relative to the horizontal plane. At this time, under the action of the excitation rotor, the conveyed object will move forward away from the baffle due to the combined effect of inertia and gravity, creating a gap in the triangular area formed by the conveyed object, the baffle, and the conveyor belt. Under the impact of the high-pressure airflow, the debris can be efficiently removed.

[0015] Secondly, under the action of the vibrating rotor, the conveyor belt oscillates, which helps the debris in the triangular area formed by the conveyed material, the baffle, and the conveyor belt to detach from the baffle and the conveyor belt, thereby improving the detachment efficiency of the debris in the triangular area.

[0016] Third, both the conveyor belt and the baffles are equipped with gaps or through holes for high-pressure airflow to pass through. The air vent can be set below the conveyor belt, and the airflow direction can more efficiently drive the debris away from the conveyor belt and the baffles, and further suck it out by the suction fan and discharge it outside the machine, thereby improving the cleaning efficiency and reducing the impurity content.

[0017] Fourth, the end of the baffle away from the conveyor belt is inclined in the direction of the conveyor belt movement, which can prevent the conveyed material from being directly impacted by the baffle when it rolls back. In addition, the thickness of each comb tooth inside the baffle gradually decreases from bottom to top. The variable stiffness design of each comb tooth not only ensures the strength of the comb tooth, but the thinner structure at the top can also avoid collision damage during rebound. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a fresh corn harvesting and cleaning system based on a flexible undulating band according to this application.

[0020] Figure 2 This is a schematic diagram of the working principle of the excitation rotor of a fresh corn harvesting and cleaning system based on a flexible undulating band, as described in this application.

[0021] Figure 3 This is a schematic diagram of the conveyor belt structure of a fresh corn harvesting and cleaning system based on a flexible undulating belt, as described in this application.

[0022] Figure 4 This is a schematic diagram of the baffle structure of a fresh corn harvesting and cleaning system based on a flexible undulating band, as described in this application.

[0023] Figure 5 This is a schematic diagram of the excitation rotor, support roller, and constraint plate structure of a fresh corn harvesting and cleaning system based on a flexible undulating band according to this application.

[0024] Figure 6 This is a schematic diagram of the air-inducing device structure of a fresh corn harvesting and cleaning system based on a flexible undulating band, as described in this application.

[0025] Figure 7This is a schematic diagram of the air vent structure of a fresh corn harvesting and cleaning system based on a flexible undulating band, as described in this application.

[0026] Figure 8 This is a force analysis diagram of the conveyor material in a fresh corn harvesting and cleaning system based on a flexible undulating band, as described in this application, when it is not lifted.

[0027] Figure 9 This is a force analysis diagram of the conveyed material being lifted by an excited rotor in a fresh corn harvesting and cleaning system based on a flexible undulating band, according to this application.

[0028] Explanation of the attached drawing numbers: 1. Scavenging fan; 2. Outer casing; 3. Support frame; 4. Conveyor belt; 5. Baffle; 6. Vibrating rotor; 7. Air inlet cylinder; 8. Air source; 9. Constraint plate; 10. Conveyed material; 11. Drive unit; 12. Branch pipe; 13. Main air pipe; 14. Branch valve; 15. Main pulse valve; 16. Hollowed-out through hole; 17. Comb teeth; 18. Support roller shaft. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] It should be noted that the designations [first], [second], [third], [fourth], etc., used in this application do not represent any order, quantity, or importance; they are merely used to distinguish different parts. The directional designations [up], [down], [left], [right], etc., used in this application are only for reference to the accompanying drawings. Therefore, the designations, directional designations, and positional relationship designations used are for the purpose of explaining and understanding this application, and not for limiting this application. In the drawings, structurally similar units are represented by the same reference numerals.

[0031] Studies have shown that in the cleaning process after harvesting sweet corn, most existing ear conveyor belts use fully enclosed solid baffles. However, in actual field operations, flat, broken leaves and slender stalks, once they fall into the closed triangular dead zone formed between the back of the solid baffle and the conveyor belt, are repeatedly crushed and stuck together by the heavy ears above. These impurities are difficult to remove by a single airflow, ultimately resulting in the overall impurity content failing to meet standards. In severe cases, it can even lead to impurity accumulation and conveyor belt jamming. Furthermore, the ambient humidity during the sweet corn cleaning process is generally high. Moist, loose leaves and broken stalks often have strong adsorption and mechanical binding forces with the ear surface, resulting in low debris removal efficiency.

[0032] Therefore, based on the aforementioned shortcomings and problems, this application provides a fresh corn harvesting and cleaning system based on a flexible undulating band, such as... Figure 1 As shown, it includes a conveyor belt 4, a drive device 11 for driving the conveyor belt 4, a baffle 5, an excitation rotor 6, and an air inrush device.

[0033] In this embodiment, the conveying material 10 is a fresh corn cob.

[0034] In this embodiment, the conveyor belt 4 is a flexible belt, which can effectively absorb impact and also has sufficient shape retention. The conveyor belt 4 is provided with perforated through holes 16, such as... Figure 3 As shown, considering that the diameter of fresh corn ears of different varieties is usually distributed between 30 and 55 mm, the size of the perforated hole 16 is slightly smaller than the minimum diameter of the ear. Generally, the size of the perforated hole 16 is selected as 20-30 mm to ensure that the corn does not fall in.

[0035] In this embodiment, one end of the baffle 5 is connected to the upper surface of the conveyor belt 4, such as... Figure 4 As shown, the baffle 5 does not adopt a fully enclosed solid structure, but rather a comb-like structure composed of multiple comb teeth 17 arranged side by side. Each comb tooth adopts a variable stiffness design, meaning that the horizontal cross-sectional area of ​​each comb tooth gradually decreases from the end closer to the conveyor belt to the end farther away from the conveyor belt. The root cross-sectional area where the comb tooth 17 connects to the conveyor belt 4 is larger, providing sufficient bending stiffness to withstand the thrust of the ears and ensure normal uphill conveying. The thinner structure at the top also avoids collision damage during rebound. Considering the ear size of different varieties of sweet corn, the spacing between adjacent comb teeth 17 is 5~18mm, and the tooth height of a single comb tooth 17 is 45~60mm.

[0036] Furthermore, the baffle 5 can be a curved C-shaped structure. This increases the space and distance between the baffle 5 and the sweet corn, reducing the compression of flat leaves and thin, broken stalks in the confined space. It also prevents the corn ears from being directly impacted by the baffle when they roll back. The comb teeth 17 are made of a flexible material to prevent damage to the sweet corn ears from impact. The flexible material can be polyurethane or similar materials.

[0037] In this embodiment, a vibrating rotor 6 and a support roller shaft 18 are arranged inside the conveyor belt 4, such as... Figure 5As shown, the vibrating rotor 6 is a cam structure. The width of each cam structure is greater than the diameter of the perforated through-hole 16 on the conveyor belt 4, preventing the cam structure from embedding into the perforated through-hole 16 during the lifting process. When the vibrating rotor 6 rotates, it can lift the conveyor belt 4. When the vibrating rotor 6 rotates and lifts the conveyor belt 4 to the highest point, the contact point between the vibrating rotor 6 and the conveyor belt 4 is located between the baffle 5 and the corn cob. The height of the contact point between the vibrating rotor and the conveyor belt relative to the horizontal plane is not less than the height of the contact point between the constraint plate and the conveyor belt relative to the horizontal plane. Under the agitation of the vibrating rotor, the corn cob, under the combined action of inertia and gravity, will move forward away from the baffle. At this time, a gap is formed between the baffle 5 and the corn cob, creating a gap in the triangular area formed by the corn cob, baffle, and conveyor belt. Under the action of high-pressure airflow, debris can be efficiently removed. Under the action of the vibrating rotor 6, the conveyor belt 4 vibrates, which is conducive to the removal of debris from the baffle and conveyor belt within the triangular area formed by the conveyed material, baffle, and conveyor belt, thus improving the removal efficiency of debris within the triangular area. The base circle radius of the cam structure of the excitation rotor 6 is 35-45 mm, the maximum radius is 55-65 mm, the lift is 10-20 mm, the axial length of a single cam structure is 40-50 mm, and multiple cam structures can be selected and set coaxially at intervals.

[0038] The support roller shaft 18 set in the middle of the conveyor belt 4 is used to fit closely to the lower surface of the conveyor belt 4 or to maintain a gap of 2 to 5 mm, in order to prevent the conveyor belt 4 from sinking excessively, but does not restrict its upward deformation.

[0039] The constraint plate 9 set on the upper surface of the conveyor belt 4 is also like Figure 5 As shown, the constraint plate 9 is positioned in front of or on both sides of the vibrating rotor 6 along the direction of movement of the conveyor belt 4. The constraint plate 9 is used to limit the lifting height of the conveyor belt 4 below the constraint plate 9. The constraint plate 9 prevents the conveyor belt 4 from deforming upwards as a whole without forming an individual slope when multiple vibrating rotors 6 lift it simultaneously, thus preventing the corn ears from turning forward as expected under gravity. With the constraint plate 9, the conveyor belt does not move upwards as a whole but rather protrudes locally. When the vibrating rotor 6 lifts the conveyor belt 4 to its highest point, the height of the contact point between the vibrating rotor and the conveyor belt relative to the horizontal plane is not less than the height of the contact point between the constraint plate and the conveyor belt relative to the horizontal plane. That is, the bulging slope of the conveyor belt 4 under the lifting action of the vibrating rotor 6 is greater than the inclination slope of the conveyor belt 4, allowing the corn ears to roll forward under gravity.

[0040] In this embodiment, the working principle by which the excitation rotor 6 can drive the corn ears to flip in a direction away from the baffle 5 is as follows: During the conveying process, the vibrating rotor 6 does not lift the conveyor belt 4, and the conveyor belt 4 tilts upward to convey the corn ears, such as... Figure 8 As shown, the corn ear is supported by the conveyor belt 4. Fn The baffle 5 provides support to the corn ears. Fa The weight of the corn cob itself G as well as G and Fn The included angle α° At this point, the corn ears exert pressure on the conveyor belt 4 and the baffle 5 under the action of gravity, and are transported with the support of the conveyor belt 4 and the baffle 5. The corn ears remain in force balance at this time, satisfying the following conditions: ; When the vibrating rotor 6 begins to lift the conveyor belt 4, as Figure 9 As shown, with the bulge of conveyor belt 4, Fn and Fa The direction slowly tilts forward, while α° As the excitation rotor 6 moves upward, the value gradually decreases, while cosα° gradually increases. Fn Gradually increase. Fn As the vibrating rotor 6 rolls forward, it gradually moves forward, while the component of gravity along the conveyor belt moves in the opposite direction. G∙sinα° As the number of ears gradually decreases, the corn ears will tend to roll forward.

[0041] When the excitation rotor 6 rotates to its highest point, the state of the corn ears is as follows: Figure 2 As shown, due to the gap formed between the corn cob and the baffle 5 by the vibrating rotor 6, the height of the contact point between the vibrating rotor and the conveyor belt relative to the horizontal plane is not less than the height of the contact point between the constraint plate and the conveyor belt relative to the horizontal plane. That is, the bulging slope of the conveyor belt 4 under the lifting action of the vibrating rotor 6 is greater than the inclination slope of the conveyor belt 4. At this time, the corn cob will move forward away from the baffle 5 under the action of the inertia of the vibrating rotor 6 and gravity.

[0042] In this embodiment, to ensure that the vibrating rotor 6 is positioned exactly behind the baffle 5 before reaching its highest point, thus achieving the desired lifting effect, a relationship between the rotational speed of the vibrating rotor 6 and the speed of the conveyor belt 4 was designed, and the spacing between adjacent baffles 5 is [missing information]. L The radius of the farthest point of the excitation rotor 6 is Rmax ; conveyor belt running speed V With the rotational speed of the excitation rotor 6 n A synchronous linkage control system is installed between them, and the numerical relationship between the two satisfies: ; By establishing a synchronous linkage, the front side of the baffle 5 on the conveyor belt 4 abuts against each other when the vibrating rotor 6 rotates to its highest point, eliminating the cumulative error between the rotation of the vibrating rotor 6 and the movement of the conveyor belt 4, and improving the stability of material conveying or sorting.

[0043] In this embodiment, the air-blowing device for blowing out debris from the gap between the conveyor 10 and the baffle 5 includes an air-blowing cylinder 7 and an air source 8, such as... Figure 6 As shown, the air inlet cylinder 7 is connected to the main air pipe 13 via a branch pipe 12. The main air pipe 13 is connected to the air source 8. A branch valve 14 for controlling the on / off state of the branch pipe 12 is installed inside the branch pipe 12. A main pulse valve 15 is installed at the connection between the main air pipe 13 and the branch pipe 12. The air inlet cylinder 7 is located on one or both sides of the vibrating rotor 6 along the direction of movement of the conveyor belt 4. The air outlet of the air inlet cylinder 7 faces the contact point with the conveyor belt 4 when the vibrating rotor 6 rotates and lifts the conveyor belt 4. Both the branch valve 14 and the main pulse valve 15 are connected to the PLC controller.

[0044] Since both the conveyor belt 4 and the baffle 5 are hollow structures, the air vent 7 located below the conveyor belt 4 can blow the debris on the conveyor belt 4 upwards, and the airflow direction can more efficiently drive the debris away from the conveyor belt 4 and the baffle 5.

[0045] In this embodiment, the structure of the air inlet cylinder 7 is as follows: Figure 7 As shown, the nozzle of the air-emerging cylinder 7 is designed as a trumpet shape with an inner diameter of 6 mm and an outer opening of 9 mm, with a diffusion angle of 120°. The high-pressure gas is first accelerated and then diffused through the trumpet-shaped nozzle, initially reducing the concentration of the jet. Subsequently, the airflow reaches the filter screen at the outlet, where it is divided into fine jets and rapidly decelerated and mixed, ultimately forming a flexible airflow with a velocity of 16–20 m / s above the conveyor belt 4. This airflow has almost no impact on the fresh corn ears and can efficiently lift and blow away lightweight impurities such as broken leaves and short stalks from the conveyor belt 4. Furthermore, the filter screen plays a crucial protective role: when the air-emerging cylinder 7 stops spraying air, impurities flying on the conveyor belt 4 are blocked by the filter screen and cannot be sucked back into the air-emerging cylinder cavity, thus completely solving the problem of easy clogging of small-diameter nozzles. The filter screen is fixed with a detachable snap ring or pressure ring, facilitating periodic backflushing cleaning with an air gun.

[0046] The air-inducing device continuously outputs airflow during operation. This continuous upward airflow efficiently removes debris from the conveyor belt and baffles, allowing it to be further sucked out by the suction fan and discharged outside the machine, thus improving cleaning efficiency and reducing impurity content. During the lifting process of the vibrating rotor 6, the air-inducing device sprays high-speed airflow to efficiently blow away debris such as broken leaves and short stems, causing them to float in the space above the conveyor belt 4 and then be sucked out by the suction fan 1. Even heavier debris is blown away from the conveyor belt 4 by the continuously output airflow. An absolute rotary encoder is installed on the vibrating rotor 6 to detect the position and angle of the cam structure. The absolute rotary encoder is connected to the PLC controller. When the encoder detects that the cam is about to reach its highest point, the PLC controller sends a trigger signal to the main pulse valve 15. The main pulse valve 15 accelerates the gas supply, causing the air-inducing cylinder to spray high-speed gas.

[0047] Because there is a physical delay of several milliseconds between the opening of the solenoid valve and the gas filling the pipe and being ejected, the PLC system needs to incorporate "advance angle compensation." This means that the main pulse valve 15 should be opened 20°-30° in advance, just before the cam reaches its highest point. This ensures that the high-pressure airflow reaches the conveyor belt at its highest point, when impurities are at their loosest, thus ensuring effective impurity removal and preventing wasted air.

[0048] In this embodiment, as Figure 1 As shown, a housing 2 is provided outside the conveyor belt 4, and a suction fan 1 is provided in the housing 2. The suction fan 1 is used to collect debris blown away by the air surge device. The housing 2 is supported by a bracket 3 and set in a predetermined position.

[0049] In summary, the arrangement of the vibrating rotor 6, support roller 18, and constraint plate 9 in this fresh corn conveying device creates continuous, uniform, and stable periodic vibration. This creates gaps in the triangular area formed by the corn ears, baffles, and conveyor belt, providing an environment for high-pressure airflow to remove debris. Simultaneously, it allows debris to detach from the corn ears and loosens the debris within the triangular area. This fresh corn harvesting and cleaning system based on a flexible undulating belt can both convey corn ears and efficiently remove debris.

[0050] Although the embodiments of this application are described in detail above, the above embodiments are not intended to limit this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A fresh corn harvesting and cleaning system based on a flexible undulating belt, comprising a conveyor belt (4) and a driving device (11) for driving the conveyor belt (4) to move, characterized in that, Also includes: Baffle (5), one end of which is connected to the upper surface of the conveyor belt (4); Vibrating rotor (6) is disposed below the lower surface of conveyor belt (4). The vibrating rotor (6) is used to lift conveyor belt (4) and drive conveyed material (10) to form a gap between baffle (5). An air-blowing device is used to output airflow to blow away debris in the gap between the conveyor (10) and the baffle (5).

2. The fresh corn harvesting and cleaning system based on a flexible undulating band according to claim 1, characterized in that, The excitation rotor (6) is a cam structure. When the excitation rotor (6) rotates and lifts the conveyor belt (4) to the highest point, the contact point between the excitation rotor (6) and the conveyor belt (4) is located between the baffle (5) and the conveyed object (10).

3. The fresh corn harvesting and cleaning system based on a flexible undulating band according to claim 2, characterized in that, It also includes a constraint plate (9), which is disposed in front of the excitation rotor (6) along the direction of movement of the conveyor belt (4). The constraint plate (9) is used to limit the lifting height of the conveyor belt (4) below the constraint plate (9).

4. The fresh corn harvesting and cleaning system based on a flexible undulating band according to claim 3, characterized in that, When the vibrating rotor (6) lifts the conveyor belt (4) to the highest point, the height of the contact point between the vibrating rotor (6) and the conveyor belt (4) relative to the horizontal plane is not less than the height of the contact point between the constraint plate (9) and the conveyor belt (4) relative to the horizontal plane.

5. A fresh corn harvesting and cleaning system based on a flexible undulating band according to claim 2, characterized in that, Several baffles (5) are equidistantly arranged on the upper surface of the conveyor belt (4), and at least one set of vibrating rotors (6) are arranged below the lower surface of the conveyor belt (4). Any baffle (5) is lifted to the highest point by at least one set of vibrating rotors (6) during its movement from the bottom end of the conveyor belt (4) to the top end of the conveyor belt (4).

6. The fresh corn harvesting and cleaning system based on a flexible undulating band according to claim 1, characterized in that, The gas-inducing device includes a gas cylinder (7) and a gas source (8). The gas cylinder (7) is connected to the main gas pipe (13) through a branch pipe (12). The main gas pipe (13) is connected to the gas source (8). A branch valve (14) for controlling the on / off state of the branch pipe (12) is installed inside the branch pipe (12). A main pulse valve (15) is provided at the connection between the main gas pipe (13) and the branch pipe (12). The air inlet cylinder (7) is set on one or both sides of the vibrating rotor (6) along the direction of movement of the conveyor belt (4). The air outlet of the air inlet cylinder (7) is facing the contact point with the conveyor belt (4) when the vibrating rotor (6) rotates and lifts the conveyor belt (4).

7. A fresh corn harvesting and cleaning system based on a flexible undulating band according to claim 6, characterized in that, The air outlet of the air vent (7) continuously outputs airflow. When the conveyor belt (4) is in the lifting stage of the vibrating rotor (6), the airflow output from the air outlet of the air vent (7) toward the target vibrating rotor (6) increases.

8. A fresh corn harvesting and cleaning system based on a flexible undulating band according to claim 6, characterized in that, The conveyor belt (4) is provided with a hollow through hole (16); the baffle (5) is composed of several comb teeth (17) arranged side by side, with gaps between adjacent comb teeth (17), and the horizontal cross-sectional area of ​​the comb teeth (17) gradually decreases from the end near the conveyor belt (4) to the end far away from the conveyor belt (4).

9. A fresh corn harvesting and cleaning system based on a flexible undulating band according to claim 6, characterized in that, The baffle (5) is inclined in the direction of movement of the conveyor belt (4) at the end away from the conveyor belt (4).

10. A fresh corn harvesting and cleaning system based on a flexible undulating band according to claim 1, characterized in that, The conveyor belt (4) is provided with a shell (2), and the shell (2) is provided with a suction fan (1). The suction fan (1) is used to collect the debris blown away by the air surging device and discharge it outside the machine.

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