Intelligent cleaning air quantity and screen mesh cooperative adjusting device controlled by seed harvesting machine

Abstract

The invention discloses an intelligent cleaning air quantity and screen mesh cooperative adjusting device controlled by a seed harvesting machine, and relates to the field of agricultural machinery. An intelligent cleaning air volume and screen mesh cooperative adjusting device controlled by a seed harvesting machine comprises a cleaning box and further comprises a screen mesh plate arranged in the cleaning box, and one side of the screen mesh plate is rotationally connected with the cleaning box through a rotating shaft; a feeding port of the cleaning box is formed in the side, close to the rotating shaft, of the upper end of the cleaning box. An air blowing opening is formed in the side, away from the rotating shaft, of the cleaning box. The air volume and the inclination angle of the screen plate are dynamically and cooperatively adjusted along with the humidity of the seeds, the cleaning time of the high-humidity seeds can be prolonged, impurities can be separated more sufficiently, the low-humidity seeds can also adapt to a reasonable process, the situation of incomplete cleaning or excessive cleaning is reduced, the quality of the cleaned seeds is guaranteed, and the probability of impurity residues and seed damage is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of agricultural machinery, and in particular relates to an intelligent cleaning air volume and screen coordinated adjustment device controlled by a seed harvesting machine. Background Art

[0002] In agricultural production, the seed cleaning process after harvest plays a key role in seed quality and subsequent planting benefits. With the acceleration of the mechanization process of modern agriculture, the cleaning function of seed harvesting machinery has attracted much attention.

[0003] The cleaning systems of traditional seed harvesters mostly have fixed settings for core parameters such as air volume and screen tilt angle. However, in actual operations, factors such as seed moisture, impurity content, and variety characteristics vary significantly. For example, seed moisture fluctuates greatly in different harvest seasons, and the physical properties (such as particle size and weight) of different crop seeds also vary. Fixed parameters cannot adapt to diverse working conditions, and problems such as incomplete cleaning (high impurity residues) or excessive cleaning (seed damage and yield loss) are prone to occur, making it difficult to ensure the stability of seed quality.

[0004] The ideal state of seed cleaning is: according to the real-time state of the seeds (humidity, impurities, etc.), the optimal air volume and screen inclination angle are dynamically matched. High-humidity seeds require a longer cleaning time and adapted wind force to ensure sufficient separation of impurities; low-humidity seeds must be transported efficiently to avoid ineffective operations. However, in the existing technology, most equipment has not established a dynamic association mechanism between seed state and cleaning parameters, and cannot accurately respond to different working conditions, which restricts the quality and efficiency improvement of post-harvest seed processing. In view of this, the present invention is specially proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an intelligent cleaning air volume and screen coordinated adjustment device for seed harvesting machinery control that can overcome the above problems or at least partially solve the above problems.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: an intelligent cleaning air volume and screen coordinated adjustment device controlled by a seed harvester, including a cleaning box, and also including: a screen plate, which is arranged in the cleaning box, and one side of the screen plate is rotatably connected to the cleaning box through a rotating shaft; the feed port of the cleaning box is opened on the side of the upper end close to the rotating shaft; the cleaning box is provided with an air outlet on the side away from the rotating shaft; an air duct is fixedly connected to the air outlet of the cleaning box; a variable speed fan is fixedly connected to the air duct through a bracket; an air cylinder is fixedly connected to the side wall of the cleaning box at an angle A position close to the rotating shaft; a piston rod with a piston is slidably connected in the air cylinder, and one end of the piston rod extends into the air cylinder and is connected to the screen plate; a transmission component for guiding part of the gas blown out of the air cylinder into the air cylinder is installed in the cleaning box, and the air outlet diameter of the air cylinder is smaller than the air inlet diameter; the lower side of the interior of the cleaning box is separated by a seed bin and an impurity bin by a partition, and a discharge port is provided on the side of the seed bin and the impurity bin away from each other, and a sealing plug is installed at the discharge port, and the cleaning box is located above the screen plate and is provided with a large impurity discharge port on the side close to the rotating shaft.

[0007] Furthermore, the transmission component includes an air collecting hood and an air supply pipe. The air collecting hood is fixedly connected to the lower end of one side inside the air cylinder. The air inlet of the air collecting hood faces the variable speed fan, and the two ends of the air supply pipe are respectively connected to the air outlet of the air collecting hood and the air inlet of the air cylinder.

[0008] In order to facilitate better separation between seeds and impurities, further, one end of the piston rod extending out of the air cylinder is fixedly connected to a support, and a rotating shaft is rotatably connected to the support. A plurality of paddle plates are fixedly connected to the rotating shaft at equal intervals in a circle, and the plurality of paddle plates are intermittently abutted against the lower surface of the screen plate respectively. An air jet pipe is fixedly connected to the air outlet of the air cylinder, and the air jet port of the air jet pipe faces the paddle plate.

[0009] In order to facilitate automatic detection of the moisture content of the seeds, further, a feed funnel is fixedly connected to the feed port of the cleaning box, a moisture detector is fixedly connected to the feed funnel, and a detection end of the moisture detector extends into the feed funnel.

[0010] In order to facilitate the orderly entry of seeds into the sorting box, further, a rotating rod is rotatably connected to a position near the discharge port in the feed funnel, and a plurality of blades are fixedly connected to the rotating rod at equal intervals in a circle. A first motor is fixedly connected to one side of the feed funnel, and the output end of the first motor is fixedly connected to the end adjacent to the rotating rod.

[0011] In order to facilitate the centralized collection of impurities, a feeding port is further provided on one side of the cleaning box close to the impurity bin, and the large impurity discharge port on the cleaning box is fixedly connected to the feeding port through a conveying pipe.

[0012] In order to prevent some impurities from accumulating in the delivery pipe, a guide plate is further fixedly connected to a position inside the delivery pipe near the outlet.

[0013] In order to prevent impurities from drifting into the seed bin due to air flow disturbance during the cleaning process and ensure the purity of the seeds, a conical filter cover is fixedly connected to the lower end of the inner part of the impurity bin, a second motor is fixedly connected to the bottom of the cleaning box, and the output end of the second motor is fixedly connected to a drive shaft. One end of the drive shaft extending upward into the impurity bin is fixedly connected to the conical filter cover, and an air intake pipe is fixedly connected to the bottom of the cleaning box near the second motor. A plurality of air intake heads are equidistantly connected to the air intake pipe, which extends into the impurity bin and is located inside the conical filter cover. The air outlet of the air intake pipe is connected to the air inlet of the wind tube through a connecting air pipe.

[0014] In order to facilitate the discharge of impurities more conveniently, further, a plurality of rotating plates are fixedly connected to the conical filter cover at equal intervals in a circle, and the impurity bin is designed to be cylindrical, and the side of the rotating plate away from the conical filter cover slides against the inner wall of the impurity bin.

[0015] In order to facilitate observation of the storage amount of seeds and impurities in the seed bin and the impurity bin so as to discharge them in time, further, the cleaning box is provided with observation ports near the seed bin and the impurity bin, and a transparent plate is fixedly connected to the observation ports.

[0016] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: the present invention dynamically coordinates the air volume and the inclination angle of the screen plate with the seed humidity, so that high-humidity seeds can extend the cleaning time and separate impurities more fully. Low-humidity seeds can also adapt to reasonable processes, reducing incomplete or excessive cleaning, ensuring the quality of seeds after cleaning, and reducing the probability of impurity residues and seed damage.

[0017] Intelligently adjust parameters based on seed moisture, eliminating the need for frequent manual intervention. High humidity ensures effective seed cleaning, while low humidity accelerates seed collection. This adapts to the cleaning needs of seeds at varying moisture levels, improving efficiency during seed harvesting and cleaning, and reducing idling and ineffective operation time.

[0018] The device can cope with the cleaning scenarios of seeds with different humidity levels, broadening the scope of application of the equipment. Whether it is the changes in humidity during the harvest season or the differences in humidity between different varieties of seeds, it can adapt through its own adjustment mechanism, thereby improving the adaptability and practicality of seed harvesting machinery under complex working conditions.

[0019] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the attached figure:

[0021] Figure 1 It is a front view schematic diagram of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the present invention;

[0023] Figure 3 For the present invention Figure 3 Schematic diagram of the structure of part A;

[0024] Figure 4 For the present invention Figure 3 Schematic diagram of the structure of part B;

[0025] Figure 5 Schematic diagram of the internal structure of the feed funnel in the present invention;

[0026] Figure 6 It is a schematic diagram of the structure between the first motor, the rotating rod and the blade in the present invention.

[0027] In the figure: 1. sorting box; 101. partition; 102. seed bin; 103. impurity bin; 104. sealing plug; 106. transparent plate; 107. feed pipe; 108. guide plate; 2. feed funnel; 201. first motor; 202. rotating rod; 203. blade; 204. moisture detector; 3. screen plate; 301. rotating shaft; 4. air duct; 401. bracket; 402. variable speed fan; 5. air collecting hood; 501. air pipe; 502. air cylinder; 503. piston rod; 505. support; 506. rotating shaft; 507. paddle; 508. air jet; 6. conical filter cover; 601. drive shaft; 602. second motor; 603. suction pipe; 604. connecting air pipe; 605. rotating plate. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0029] Example 1:

[0030] Reference Figures 1-6The intelligent cleaning air volume and screen coordinated adjustment device controlled by the seed harvesting machinery includes a cleaning box 1, and also includes: a screen plate 3, which is arranged in the cleaning box 1, and one side of the screen plate 3 is rotatably connected to the cleaning box 1 through a rotating shaft 301; the feeding port of the cleaning box 1 is opened on the side of the upper end close to the rotating shaft 301; the cleaning box 1 is provided with an air outlet on the side away from the rotating shaft 301; the air cylinder 4 is fixedly connected to the air outlet of the cleaning box 1; the variable speed fan 402 is fixedly connected to the air cylinder 4 through the bracket 401; the air cylinder 502 is fixedly connected to the side wall of the cleaning box 1 close to the rotating shaft 301; the piston rod 5 with a piston 03, is slidably connected in the air cylinder 502, and one end of the piston rod 503 extends into the air cylinder 502 and is connected to the screen plate 3; the conveying component used to guide part of the gas blown out of the wind tube 4 into the air cylinder 502 is installed in the cleaning box 1, and the air outlet diameter of the air cylinder 502 is smaller than the air inlet diameter; the lower side of the interior of the cleaning box 1 is separated by a partition 101 with a seed bin 102 and an impurity bin 103, and the seed bin 102 and the impurity bin 103 are both provided with a discharge port on the side away from each other, and a sealing plug 104 is installed at the discharge port, and the cleaning box 1 is located above the screen plate 3 and is close to the side of the rotating shaft 301 and is provided with a large impurity discharge port.

[0031] The transmission component includes an air collecting hood 5 and an air supply pipe 501. The air collecting hood 5 is fixedly connected to the lower end of one side inside the air cylinder 502. The air inlet of the air collecting hood 5 faces the variable speed fan 402. The two ends of the air supply pipe 501 are respectively connected to the air outlet of the air collecting hood 5 and the air inlet of the air cylinder 502.

[0032] When it is necessary to clean the harvested seeds for impurities, the staff first pours the seeds into the cleaning box 1 at a uniform speed through the feed port at the upper end of the cleaning box 1 close to the rotating shaft 301, and falls on the screen plate 3. Before pouring the seeds, the humidity of the seeds is first tested, and then the variable speed fan 402 is started according to the humidity of the seeds, and air is sent to the cleaning box 1 through the wind tube 4 at a corresponding speed. When the gas contacts the seeds, the seeds can be cleaned of impurities, and the impurities will be separated from the seeds by the action of the airflow. Large impurities are discharged through the large impurity discharge port of the cleaning box 1 located above the screen plate 3 and close to the rotating shaft 301. Small impurities will pass through the filter holes of the screen plate 3 and fall into the impurity bin 103. The cleaned seeds will flow along the inclined screen plate 3 and fall into the seed bin 102. The seeds or impurities can be discharged later through the sealing plug 104 of the discharge port.

[0033] When the humidity of the seeds is high, the speed of the variable-speed fan 402 is increased. On the one hand, more air flows toward the screen plate 3, thereby enhancing the separation effect of impurities and seeds. On the other hand, the gas collecting hood 5 collects more gas and sends it into the air cylinder 502 through the air pipe 501. Since the diameter of the air inlet of the air cylinder 502 is larger than the diameter of the air outlet, the increased wind speed causes the air pressure in the air cylinder 502 to rise, and the piston rod 503 with a piston is pushed by the air pressure, thereby lifting the screen plate 3 to a higher height and reducing the inclination angle of the screen plate 3. After the inclination angle is reduced, the flow speed of the seeds on the screen plate 3 slows down, prolonging the contact time with the gas, thereby improving the adequacy of the impurities removed.

[0034] When the seed humidity is low, the speed of the variable speed fan 402 is reduced, and the air pressure in the air cylinder 502 is reduced accordingly. The piston rod 503 drives the screen plate 3 to fall back to a certain height, increasing the inclination angle of the screen plate 3, accelerating the falling speed of the seeds into the seed bin 102, and improving the cleaning efficiency.

[0035] By dynamically coordinating the air volume and the inclination angle of the screen plate 3 according to the seed humidity, high-humidity seeds can extend the cleaning time and separate impurities more fully. Low-humidity seeds can also adapt to a reasonable process, reducing incomplete or excessive cleaning, ensuring the quality of seeds after cleaning, and reducing the probability of impurity residue and seed damage.

[0036] Intelligently adjust parameters based on seed moisture, eliminating the need for frequent manual intervention. High humidity ensures effective seed cleaning, while low humidity accelerates seed collection. This adapts to the cleaning needs of seeds at varying moisture levels, improving efficiency during seed harvesting and cleaning, and reducing idling and ineffective operation time.

[0037] The device can cope with the cleaning scenarios of seeds with different humidity levels, broadening the scope of application of the equipment. Whether it is the changes in humidity during the harvest season or the differences in humidity between different varieties of seeds, it can adapt through its own adjustment mechanism, thereby improving the adaptability and practicality of seed harvesting machinery under complex working conditions.

[0038] Example 2:

[0039] Reference Figures 1-6 The intelligent cleaning air volume and screen coordinated adjustment device controlled by the seed harvesting machinery is basically the same as that of Example 1. Furthermore, one end of the piston rod 503 extending out of the air cylinder 502 is fixedly connected to a support 505, and a rotating shaft 506 is rotatably connected to the support 505. A plurality of paddle plates 507 are fixedly connected to the rotating shaft 506 at equal intervals in a circle. The plurality of paddle plates 507 are intermittently abutted against the lower surface of the screen plate 3 respectively. An air jet pipe 508 is fixedly connected to the air outlet of the air cylinder 502, and the air jet port of the air jet pipe 508 faces the paddle plate 507.

[0040] When the seeds are cleaned by the airflow on the screen plate 3, although the static tilt adjustment of the screen plate 3 can change the flow rate, impurities and seeds are easily adhered due to relative stillness. The paddle plate 507 drives the screen plate 3 to shake periodically, which can break this static state. On the one hand, it allows the seeds and impurities to roll and displace on the screen plate 3, increasing the chance of separation from each other. On the other hand, it allows the airflow to penetrate the seed layer more fully, light impurities are carried away more thoroughly by the wind, and heavy impurities are separated from the seed surface due to shaking, which greatly improves the purity of the seeds after cleaning and reduces impurity residues.

[0041] The moisture content and impurity types (such as straw debris and soil lumps) of the harvested seeds vary greatly. When the static screen is faced with moist and sticky seeds, it is easy for the screen to become blocked and unevenly cleaned. The shaking of the screen plate 3 can actively shake off the adhered seeds and stuck impurities to avoid clogging of the screen holes and ensure a smooth and continuous cleaning process. At the same time, the dynamic screening force generated by the shaking can adapt to the separation of impurities of different shapes and weights. Whether it is fine and light impurities or heavy and bulky impurities, they can be separated more accurately to adapt to various harvesting scenarios.

[0042] Example 3:

[0043] Reference Figures 1-6 The intelligent cleaning air volume and screen coordinated adjustment device controlled by the seed harvesting machinery is basically the same as that of Example 2. Furthermore, a feeding funnel 2 is fixedly connected to the feeding port of the cleaning box 1, and a moisture detector 204 is fixedly connected to the feeding funnel 2. The detection end of the moisture detector 204 extends into the feeding funnel 2. Before the seeds enter the cleaning box 1, the moisture detector 204 uses the detection end extended into the feeding funnel 2 to capture the seed moisture data in real time. There is no need for additional pauses or separate detections. The humidity judgment is naturally completed in the transportation process, which is convenient for subsequent Intelligent adjustment (air volume, inclination angle of screen plate 3, shaking of screen plate 3, etc.) provides precise parameters. For example, when high-humidity seeds have just entered the funnel, the system has obtained data and is preparing to increase the air volume and adjust the inclination angle of the screen, so that the adjustment of the cleaning parameters is more timely and adaptive. This structure integrates moisture measurement into the feeding action to reduce operation breakpoints. Seed transportation and humidity detection are carried out in parallel, which not only shortens the overall cleaning process time, but also reduces the need for manual intervention. Especially during large-scale harvesting, the synergy of continuous feeding + automatic moisture measurement makes the cleaning equipment run more smoothly, which meets the requirements of efficient operations in modern agriculture.

[0044] A rotating rod 202 is rotatably connected to the position near the discharge port in the feed funnel 2, and a plurality of blades 203 are fixedly connected to the rotating rod 202 at equidistant intervals around the circumference. A first motor 201 is fixedly connected to one side of the feed funnel 2, and the output end of the first motor 201 is fixedly connected to the end adjacent to the rotating rod 202. The first motor 201 drives the rotating rod 202, and the blades 203 periodically open and close the discharge port of the feed funnel 2 as it rotates, which can stably control the falling speed and flow of seeds, avoid a large amount of seeds from pouring into the cleaning box 1 at one time, and allow the cleaning system to always operate under a reasonable load to ensure a stable cleaning effect. By adjusting the speed of the first motor 201 according to the cleaning efficiency, seed humidity and other conditions, the rotation frequency of the blades 203 can be flexibly changed to adapt to different cleaning requirements. For example, high-humidity seeds require a longer cleaning time, and the motor speed can be reduced to reduce the amount of material dropped per unit time, match the cleaning rhythm, and improve the cleaning quality.

[0045] Example 4:

[0046] Reference Figures 1-6 The intelligent cleaning air volume and screen coordinated adjustment device controlled by the seed harvesting machinery is basically the same as that of Example 3. Furthermore, a drop-out port is provided on the side of the cleaning box 1 close to the impurity bin 103. The large impurity discharge port on the cleaning box 1 is fixedly connected to the drop-out port through a feed pipe 107. After passing through the discharge port, the large impurities can directly fall into the impurity bin 103 through the feed pipe 107, avoiding manual transportation or additional collection, simplifying the cleaning process, and allowing impurities from different sources (selected impurities, large impurities) to be concentrated in the impurity bin 103, which is convenient for subsequent unified processing and reduces the complexity of operation.

[0047] A guide plate 108 is fixedly connected to the inside of the conveying pipe 107 near the outlet. The guide plate 108 arranged in the conveying pipe 107 can effectively guide large impurities to fall smoothly into the impurity bin 103, avoiding the accumulation, jamming or splashing of impurities at the outlet of the conveying pipe 107, ensuring the smooth flow of impurity transportation path, and at the same time making the impurities fall into the designated area, which is convenient for subsequent unified cleaning and management, and further improving the consistency and orderliness of the cleaning operation.

[0048] Example 5:

[0049] Reference Figures 1-6The intelligent cleaning air volume and screen coordinated adjustment device controlled by the seed harvesting machinery is basically the same as that of Example 4. Furthermore, the lower end of the interior of the impurity bin 103 is fixedly connected to the conical filter cover 6, and the bottom of the cleaning box 1 is fixedly connected to the second motor 602. The output end of the second motor 602 is fixedly connected to the drive shaft 601, and the drive shaft 601 extends upward into the impurity bin 103. One end is fixedly connected to the conical filter cover 6, and the bottom of the cleaning box 1 near the second motor 602 is fixedly connected to the suction pipe 603. A plurality of suction heads are equidistantly connected to the suction pipe 603. The suction heads extend into the impurity bin 103 and are located inside the conical filter cover 6. The air outlet of the suction pipe 603 is connected to the air inlet of the wind tube 4 through the connecting air pipe 604.

[0050] The structural design of the conical filter cover 6, the second motor 602, the suction pipe 603 and the connecting air pipe 604 in the impurity bin 103 drives the conical filter cover 6 to rotate through the second motor 602, and cooperates with the suction pipe 603 and the suction head to form a directional suction field in the impurity bin 103, which can effectively absorb smaller and lighter impurities and prevent them from drifting to the seed bin 102 due to air flow disturbance during the cleaning process, thereby ensuring the purity of the seeds.

[0051] Example 6:

[0052] Reference Figures 1-6 The intelligent cleaning air volume and screen coordinated adjustment device controlled by the seed harvesting machinery is basically the same as that of Example 5. Furthermore, the cleaning box 1 is provided with observation ports near the seed bin 102 and the impurity bin 103, and a transparent plate 106 is fixedly connected to the observation port.

[0053] A plurality of rotating plates 605 are fixedly connected to the conical filter cover 6 at equal intervals around the circumference. The impurity bin 103 is cylindrical in design. The side of the rotating plate 605 away from the conical filter cover 6 slides against the inner wall of the impurity bin 103 .

[0054] The cleaning box 1 is provided with a transparent plate 106, which, combined with the conical filter cover 6 and the rotating plate 605 structure in the impurity bin 103, has dual practical advantages: first, the transparent plate 106 can intuitively present the material accumulation situation in the seed bin 102 and the impurity bin 103, and the operator can grasp the seed and impurity inventory in real time, open the discharge port for cleaning in time, and avoid affecting the cleaning efficiency due to overfilling of materials; second, in the cylindrical impurity bin 103, the rotating plate 605 is with the conical filter cover 6. When impurities need to be discharged, the sealing plug 104 is opened, and the impurities will move to the discharge port driven by the rotating plate 605, thereby facilitating the rapid discharge of impurities from the impurity bin 103.

[0055] The above description is merely a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as above with the preferred embodiment, it is not intended to limit the present invention.

Claims

1. An intelligent cleaning air volume and screen coordinated adjustment device controlled by a seed harvesting machine, comprising a cleaning box (1), characterized in that: Also includes: A screen plate (3) is arranged in the cleaning box (1), and one side of the screen plate (3) is rotatably connected to the cleaning box (1) via a rotating shaft (301); The feed port of the cleaning box (1) is opened on one side of the upper end close to the rotating shaft (301); The cleaning box (1) is provided with an air blowing port on a side away from the rotating shaft (301); An air duct (4) is fixedly connected to the air outlet of the cleaning box (1); A variable speed fan (402) is fixedly connected to the air duct (4) via a bracket (401); An air cylinder (502) is fixedly connected at an angle to a position of the side wall of the cleaning box (1) near the rotating shaft (301); A piston rod (503) having a piston is slidably connected in the air cylinder (502), and one end of the piston rod (503) extending into the air cylinder (502) is connected to the screen plate (3); A conveying assembly for guiding part of the gas blown out of the air cylinder (4) into the air cylinder (502), installed in the cleaning box (1), wherein the diameter of the air outlet of the air cylinder (502) is smaller than the diameter of the air inlet; The lower inner side of the cleaning box (1) is separated into a seed bin (102) and an impurity bin (103) by a partition (101), and a discharge port is provided on the side of the seed bin (102) and the impurity bin (103) away from each other, and a sealing plug (104) is installed at the discharge port. A large impurity discharge port is provided on the side of the cleaning box (1) located above the screen plate (3) and close to the rotating shaft (301).

2. The intelligent cleaning air volume and screen coordinated adjustment device controlled by a seed harvester according to claim 1 is characterized in that: The transmission assembly includes an air collecting hood (5) and an air supply pipe (501), wherein the air collecting hood (5) is fixedly connected to the lower end of one side inside the air cylinder (502), the air inlet of the air collecting hood (5) faces the variable speed fan (402), and the two ends of the air supply pipe (501) are respectively connected to the air outlet of the air collecting hood (5) and the air inlet of the air cylinder (502).

3. The intelligent cleaning air volume and screen coordinated adjustment device controlled by a seed harvester according to claim 2 is characterized in that: One end of the piston rod (503) extending out of the air cylinder (502) is fixedly connected to a support (505), and a rotating shaft (506) is rotatably connected to the support (505). A plurality of paddle plates (507) are fixedly connected to the rotating shaft (506) at equal intervals in a circle, and the plurality of paddle plates (507) are respectively intermittently abutted against the lower surface of the screen plate (3). An air jet pipe (508) is fixedly connected to the air outlet of the air cylinder (502), and the air jet port of the air jet pipe (508) faces the paddle plate (507).

4. The intelligent cleaning air volume and screen coordinated adjustment device controlled by a seed harvester according to claim 1, characterized in that: A feeding funnel (2) is fixedly connected to the feeding port of the cleaning box (1), a moisture detector (204) is fixedly connected to the feeding funnel (2), and a detection end of the moisture detector (204) extends into the feeding funnel (2).

5. The intelligent cleaning air volume and screen coordinated adjustment device controlled by a seed harvester according to claim 4 is characterized in that: A rotating rod (202) is rotatably connected to a position near the discharge port in the feed funnel (2), and a plurality of blades (203) are fixedly connected to the rotating rod (202) at equidistant intervals in a circle. A first motor (201) is fixedly connected to one side of the feed funnel (2), and an output end of the first motor (201) is fixedly connected to an end adjacent to the rotating rod (202).

6. The intelligent cleaning air volume and screen coordinated adjustment device controlled by a seed harvester according to claim 1, characterized in that: A material discharge port is provided on one side of the cleaning box (1) close to the impurity bin (103), and a large impurity discharge port on the cleaning box (1) is fixedly connected to the material discharge port via a material delivery pipe (107).

7. The intelligent cleaning air volume and screen coordinated adjustment device controlled by a seed harvester according to claim 6, characterized in that: A guide plate (108) is fixedly connected to a position near the outlet inside the conveying pipe (107).

8. The intelligent cleaning air volume and screen coordinated adjustment device controlled by a seed harvester according to claim 1, characterized in that: The lower end of the interior of the impurity bin (103) is fixedly connected to a conical filter cover (6); the bottom of the cleaning box (1) is fixedly connected to a second motor (602); the output end of the second motor (602) is fixedly connected to a drive shaft (601); one end of the drive shaft (601) extends upward into the impurity bin (103) and is fixedly connected to the conical filter cover (6); the bottom of the cleaning box (1) near the second motor (602) is fixedly connected to an air intake pipe (603); a plurality of air intake heads are equidistantly connected to the air intake pipe (603); the air intake heads extend into the impurity bin (103) and are located inside the conical filter cover (6); the air outlet of the air intake pipe (603) is connected to the air inlet of the air duct (4) via a connecting air pipe (604).

9. The intelligent cleaning air volume and screen coordinated adjustment device controlled by a seed harvester according to claim 8, characterized in that: The cleaning box (1) is provided with observation ports at positions close to the seed bin (102) and the impurity bin (103), and a transparent plate (106) is fixedly connected to the observation ports.

10. The intelligent cleaning air volume and screen coordinated adjustment device controlled by the seed harvester according to claim 9 is characterized in that The conical filter cover (6) is fixedly connected with a plurality of rotating plates (605) at equal intervals in a circle. The impurity bin (103) is designed to be cylindrical. The side of the rotating plate (605) away from the conical filter cover (6) slides against the inner wall of the impurity bin (103).

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