Preset pest killing device for crop pest control

Abstract

The invention relates to the technical field of pest control, and discloses a preset pest killing device for crop pest control, which comprises a the top of the base is fixedly connected with a pesticide box, the top of the base is rotatably connected with a turntable seat, the top of the turntable seat is fixedly connected with an adjusting mechanism, and the pesticide box is communicated with a hose; a pressurizing mechanism is installed on the outer wall of the adjusting mechanism, a flow guide mechanism is arranged in the adjusting mechanism, a small pump machine is arranged in the pesticide box and used for pumping pesticide to a hose, the fixing frame is fixedly connected to the top of the base, and the spraying requirements of crops with different heights can be met by driving a telescopic inner rod to ascend and descend through a hydraulic telescopic rod; the problem that manual pesticide spraying is difficult in the later period of long-stalked crops is solved, crop leaves are turned over through air blown out of the air blower, and pesticide liquid can be sprayed to the backs of the leaves which are difficult to touch by traditional spraying.

Description

Technical Field

[0001] This invention relates to the field of pest control technology, specifically to a pre-set insecticidal device for controlling crop diseases and pests. Background Technology

[0002] In the prevention and control of crop diseases and pests, pre-installed insecticidal devices refer to automated or semi-automated insecticidal equipment that is installed in advance in agricultural environments such as fields, greenhouses, or orchards to monitor and control pests. These devices can usually apply pesticides accurately and kill pests effectively, and can intervene when pests occur, thereby improving the efficiency of prevention and control.

[0003] Patent CN216821433U discloses a pre-set insecticidal device for controlling crop diseases and pests, including a chassis. A support rod is connected to the top of the chassis, and a pesticide tank is located on one side of the support rod. A pump box is located below the pesticide tank, and a water pump is bolted inside the pump box. One end of the water pump is connected to a suction pipe, and the other end is fitted with a delivery pipe. A connecting hole is provided on the outside of the delivery pipe. This patent uses a chassis and support rod combined into a rod-shaped device, which occupies a small area and facilitates the support of other components. When the water pump is started, pesticide solution is drawn from the pesticide tank through the suction pipe and supplied to the support frame through the delivery pipe. The support frame is interconnected with a spray ring. The pesticide solution is sprayed through the spray ring and nozzles. The spray ring is circular, allowing for area-specific spraying and increasing the spraying area. The pump box is located outside the water pump to prevent corrosion from pesticide solution, sunlight, rain, etc.

[0004] However, the aforementioned devices are difficult to spray on crops of different heights, which means that manual spraying is still required in the later stages of tall crop growth. Therefore, a pre-set insecticidal device for the prevention and control of crop diseases and pests is proposed to solve the above-mentioned problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a pre-set insecticidal device for the prevention and control of crop diseases and pests, in order to address the shortcomings of the prior art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a pre-set insecticidal device for the prevention and control of crop diseases and pests, comprising a base; a medicine tank is fixedly connected to the top of the base; a turntable is rotatably connected to the top of the base; an adjustment mechanism is fixedly connected to the top of the turntable; the medicine tank is connected to a flexible tube; a pressure mechanism is installed on the outer wall of the adjustment mechanism; a flow guiding mechanism is provided inside the adjustment mechanism; a small pump is provided inside the medicine tank for pumping the pesticide to the flexible tube; the adjustment mechanism includes: a fixed frame, a motor, a gear, a telescopic outer rod, and a liquid... The system includes a telescopic rod, an inner telescopic rod, a mounting bracket, an air duct, a blower, and a nozzle. The mounting bracket is fixedly connected to the top of the base. The motor is fixedly connected to the inner wall of the mounting bracket. A gear is fixedly connected to the output end of the motor. The outer telescopic rod is fixedly connected to the top of the turntable base. The hydraulic telescopic rod is fixedly connected to the bottom of the inner wall of the inner telescopic rod. The inner telescopic rod is slidably connected to the inner wall of the outer telescopic rod. The mounting bracket is fixedly connected to the outer wall of the inner telescopic rod. The air duct is fixedly connected to the inner wall of the mounting bracket. The blower is fixedly connected to the inner wall of the mounting bracket. The nozzle is fixedly connected to... The top of the telescopic inner rod is fixedly connected to the output end of the hydraulic telescopic rod on both sides of the duct. The blower outlet is fixedly connected to the side of the duct near the mounting frame. The nozzle is connected to the hose. There are two medicine tanks, each containing a different pesticide. The nozzles on both sides of the duct are connected to different medicine tanks. After the device is deployed, different types of insecticides are added to the two medicine tanks respectively. When the device reaches the operating conditions, it starts operating. The hydraulic telescopic rod begins to extend and retract rhythmically, driving the telescopic inner rod to move up and down. The motor starts to drive the gears. As the wheel rotates, the gears rotate, driving the turntable to rotate. Then, the motor reverses and drives the turntable back. The rotation of the turntable drives the telescopic outer rod to rotate. At the same time, the blower starts, mixing the different liquids sprayed from each nozzle and spraying them out in conjunction with the rotating turntable to fully cover the crops within the device's working range. The hydraulic telescopic rod drives the telescopic inner rod to rise and fall, which can meet the spraying needs of crops of different heights and solve the problem of difficult manual spraying of tall crops in the later stages. The air blown by the blower turns the crop leaves over, allowing the liquid to be sprayed onto the back of the leaves, which is difficult to reach with traditional sprayers.

[0007] Preferably, the pressurizing mechanism includes: a mounting plate, a push plate, and a pressurizing cylinder. The mounting plate is fixedly connected to the outer wall of the telescopic inner rod, the push plate is fixedly connected to the bottom of the mounting plate, and the pressurizing cylinder is fixedly connected to the inner wall of the medicine tank. The pressurizing mechanism also includes: a threaded rod, a stirring paddle, a bearing ring, and a mounting ring. The threaded rod is fixedly connected to the bottom of the push plate, the bearing ring is fixedly connected to the top of the medicine tank, the mounting ring is rotatably connected to the inner wall of the bearing ring, and the stirring paddle is fixedly connected to the bottom of the mounting ring. The top of the pressurizing cylinder is fixedly connected to the bottom of the push plate. The inner wall of the mounting ring has a threaded groove. During the lifting and lowering of the telescopic inner rod, the lowering of the telescopic inner rod will drive the mounting ring... The installation plate moves downwards, causing the push plate to move downwards as well. The push plate then pushes the pressurizing air cylinder to compress air, increasing the air pressure inside the tank. This, combined with the pump inside the tank, forces the liquid pesticide through the hose to the nozzle. By increasing the air pressure inside the tank, the flow rate and atomization effect of the pesticide sprayed from the nozzle are effectively improved, as well as the subsequent mixing effect. During the downward movement of the push plate, the threaded rod also moves downwards. The downward movement of the threaded rod drives the installation ring to rotate through the threaded grooves on its surface. The rotation of the installation ring drives the stirring paddle to rotate, agitating the pesticide. This prevents undissolved particles or concentrated pesticide from settling, which would lead to uneven distribution of the effective ingredients in the spray solution. Otherwise, the pesticide would form high-concentration spots during spraying, scorching the leaves and causing crop deformities and wilting.

[0008] Preferably, the flow guiding mechanism includes: a diffuser, a fixed base, a guide plate, a second gear, a third gear, and a bidirectional rack. The diffuser is fixedly connected to the side of the duct away from the blower. The fixed base is fixedly connected to the outer surface of the diffuser. The guide plate is rotatably connected to the inner wall of the diffuser. The second gear is fixedly connected to the side of the guide plate near the fixed base. The bidirectional rack is slidably connected to the surface of the fixed base. The third gear meshes with the bidirectional rack. The flow guiding mechanism also includes: a connector, a fan blade, and a mixing impeller. The connector is fixedly connected to the inner wall of the duct. The mixing impeller is rotatably connected to the inner wall of the connector. The third gear is driven by a servo motor fixed externally to the fixed base. The fan blade is fixedly connected to the side of the mixing impeller near the blower. When the blower works with the nozzles for spraying, gear three is driven by a servo motor outside the fixed base to rotate. The rotation of gear three drives the bidirectional rack that meshes with it to move. The movement of the bidirectional rack drives gear two that meshes with it to rotate. The rotation of gear two drives the guide plate to rotate, guiding and fine-tuning the sprayed mist to further expand the accuracy and coverage of the mist spraying. The airflow blown by the blower also drives the fan blades to rotate. The rotation of the fan blades drives the mixing paddle to rotate. The rotation of the mixing paddle mixes the different agents sprayed from the two nozzles. By mixing agents with different mechanisms of action, multiple pests can be controlled at the same time. It can also delay the development of pesticide resistance in pests. The use of agents with different mechanisms of action makes it difficult for pests to develop resistance to multiple components at the same time.

[0009] The present invention, by adopting the above technical solution, can bring the following beneficial effects: 1. This pre-set insecticidal device for the prevention and control of crop diseases and pests can meet the spraying needs of crops of different heights by driving the telescopic inner rod to rise and fall through the hydraulic telescopic rod, solving the problem of difficulty in manual spraying of tall crops in the later stage. The air blown out by the blower turns the crop leaves over, and can also make the liquid sprayed to the back of the leaves that are difficult to reach by traditional sprayers.

[0010] 2. This pre-set insecticidal device for crop pest and disease control can effectively increase the flow rate and atomization effect of the sprayed agent by increasing the air pressure in the tank, and also improve the subsequent mixing effect. The stirring paddle rotates to agitate the agent, preventing undissolved particles or concentrated agents from settling and causing uneven distribution of effective ingredients in the spray solution. This would result in high-concentration spots of the agent during spraying, which could burn the leaves and cause crop deformities and wilting.

[0011] 3. This pre-set insecticidal device for crop pest and disease control guides and fine-tunes the sprayed pesticide mist through the rotation of the guide plate, further expanding the accuracy and coverage of the pesticide mist spraying. The mixing slurry rotates to mix the different agents sprayed from the two nozzles. Mixing agents with different mechanisms of action can control multiple pests at the same time and can also delay the development of pesticide resistance in pests. The use of agents with different mechanisms of action makes it difficult for pests to develop resistance to multiple components at the same time. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the regulating mechanism of the present invention; Figure 3 This is a cross-sectional view of the telescopic outer rod structure of the present invention; Figure 4 This is a partially enlarged view of the adjustment mechanism of the present invention; Figure 5 This is a schematic diagram of the pressurization mechanism of the present invention; Figure 6 This is an enlarged view of the threaded rod structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of the structure at point A in the middle; Figure 8 This is a partial cross-sectional view of the flow guiding mechanism of the present invention; Figure 9 This is a partial cross-sectional view of the flow guiding mechanism of the present invention.

[0013] In the diagram: 1. Base; 2. Medicine box; 3. Turntable seat; 4. Adjustment mechanism; 401. Fixing frame; 402. Motor; 403. Gear 1; 404. Telescopic outer rod; 405. Hydraulic telescopic rod; 406. Telescopic inner rod; 407. Mounting frame; 408. Air duct; 409. Blower; 410. Nozzle; 5. Hose; 6. Pressurization mechanism; 601. Mounting plate; 602. Push plate; 603. Pressurization cylinder; 604. Threaded rod; 605. Agitator; 606. Bearing ring; 607. Mounting ring; 7. Flow guiding mechanism; 701. Diffuser; 702. Fixing seat; 703. Guide plate; 704. Gear 2; 705. Gear 3; 706. Bidirectional rack; 707. Connector; 708. Fan blade; 709. Mixing impeller. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Please see Figures 1-9One embodiment of the present invention is: a pre-set insecticidal device for the prevention and control of crop diseases and pests, including a base 1, a medicine tank 2 fixedly connected to the top of the base 1, a turntable seat 3 rotatably connected to the top of the base 1, an adjustment mechanism 4 fixedly connected to the top of the turntable seat 3, a hose 5 connected to the medicine tank 2, a pressurizing mechanism 6 installed on the outer wall of the adjustment mechanism 4, a flow guiding mechanism 7 provided inside the adjustment mechanism 4, and a small pump provided inside the medicine tank 2 for pumping the pesticide to the hose 5. The adjustment mechanism 4 includes: a fixed frame 401, a motor 402, a gear 403, a telescopic outer rod 404, a hydraulic telescopic rod 405, a telescopic inner rod 406, a mounting frame 407, an air duct 408, a blower 409, and a nozzle 410. The fixed frame 401 is fixedly connected to the top of the base 1, the motor 402 is fixedly connected to the inner wall of the fixed frame 401, the gear 403 is fixedly connected to the output end of the motor 402, the telescopic outer rod 404 is fixedly connected to the top of the turntable seat 3, and the hydraulic telescopic rod 405... The inner wall of the telescopic inner rod 406 is fixedly connected to the bottom. The telescopic inner rod 406 is slidably connected to the inner wall of the telescopic outer rod 404. The mounting frame 407 is fixedly connected to the outer wall of the telescopic inner rod 406. The air duct 408 is fixedly connected to the inner wall of the mounting frame 407. The blower 409 is fixedly connected to the inner wall of the mounting frame 407. The nozzle 410 is fixedly connected to the inner walls of both sides of the air duct 408. The top of the telescopic inner rod 406 is fixedly connected to the output end of the hydraulic telescopic rod 405. The air outlet of the blower 409 is fixedly connected to the side of the air duct 408 near the mounting frame 407. The nozzle 410 is connected to the hose 5. There are two medicine tanks 2, and the two medicine tanks 2 are filled with different medicines. The nozzles 410 on both sides of the air duct 408 are connected to different medicine tanks 2, which can meet the spraying needs of crops of different heights and solve the problem of difficult manual spraying of tall crops in the later stage. The air blown by the blower 409 turns the crop leaves and can also spray the medicine to the back of the leaves that are difficult to reach by traditional sprayers.

[0016] Working principle: After the device is deployed, different types of insecticides are added to the two pesticide tanks 2. When the device reaches the operating conditions, it starts operating. The hydraulic telescopic rod 405 starts to extend and retract regularly, driving the inner telescopic rod 406 to move up and down. The motor 402 starts and drives the gear 403 to rotate. The rotation of the gear 403 drives the turntable 3 to rotate 90 degrees. Then the motor 402 reverses and drives the turntable 3 to rotate back. The rotation of the turntable 3 drives the outer telescopic rod 404 to rotate. At the same time, the blower 409 starts and sprays the different pesticides sprayed from the nozzles 410 together with the rotating turntable 3 to fully cover the crops within the working range of the device. The hydraulic telescopic rod 405 drives the inner telescopic rod 406 to rise and fall, which can meet the spraying needs of crops of different heights and solve the problem of difficult manual spraying of tall crops in the later stages. The air blown by the blower 409 turns the crop leaves and can also spray the pesticide to the back of the leaves that are difficult to reach by traditional sprayers.

[0017] Please see Figures 1-9Based on the above embodiments, in another embodiment of the present invention, the pressurizing mechanism 6 includes: a mounting plate 601, a push plate 602, and a pressurizing cylinder 603. The mounting plate 601 is fixedly connected to the outer wall of the telescopic inner rod 406, the push plate 602 is fixedly connected to the bottom of the mounting plate 601, and the pressurizing cylinder 603 is fixedly connected to the inner wall of the medicine tank 2. The pressurizing mechanism 6 also includes: a threaded rod 604, a stirring paddle 605, a bearing ring 606, and a mounting ring 607. The threaded rod 604 is fixedly connected to the bottom of the push plate 602, the bearing ring 606 is fixedly connected to the top of the medicine tank 2, and the mounting ring 607 is rotatably connected to the bottom of the push plate 602. The agitator 605 is fixedly connected to the bottom of the mounting ring 607 and the top of the pressurizing cylinder 603 is fixedly connected to the bottom of the push plate 602. The inner wall of the mounting ring 607 is provided with a threaded groove. By increasing the air pressure in the medicine tank 2, the flow rate of the sprayed agent by the nozzle 410 and the atomization effect of the agent can be effectively improved, and the subsequent mixing effect can also be improved. By rotating the agitator 605, the agent is stirred to prevent undissolved particles or concentrated agents from settling, which would cause uneven distribution of effective ingredients in the spray liquid, resulting in high-concentration spots of the agent during spraying, which would burn the leaves and cause the crops to become deformed and withered.

[0018] The airflow guiding mechanism 7 includes: a diffuser 701, a fixed base 702, a guide plate 703, a second gear 704, a third gear 705, and a double-sided rack 706. The diffuser 701 is fixedly connected to the side of the duct 408 away from the blower 409. The fixed base 702 is fixedly connected to the outer surface of the diffuser 701. The guide plate 703 is rotatably connected to the inner wall of the diffuser 701. The second gear 704 is fixedly connected to the side of the guide plate 703 near the fixed base 702. The double-sided rack 706 is slidably connected to the surface of the fixed base 702. The third gear 705 meshes with the double-sided rack 706. The airflow guiding mechanism 7 also includes: a connector 707 and a fan. The blade 708, the mixing paddle 709, and the connector 707 are fixedly connected to the inner wall of the duct 408. The mixing paddle 709 is rotatably connected to the inner wall of the connector 707. The gear 3 705 is driven by a servo motor fixed externally to the fixed base 702. The fan blade 708 is fixedly connected to the side of the mixing paddle 709 near the blower 409. It guides and fine-tunes the sprayed pesticide mist to further expand the accuracy and coverage of the pesticide mist spraying. By mixing pesticides with different mechanisms of action, multiple pests can be controlled at the same time. It can also delay the development of pesticide resistance in pests. Mixing pesticides with different mechanisms of action makes it difficult for pests to develop resistance to multiple components at the same time.

[0019] Working principle: During the lifting and lowering of the telescopic inner rod 406, the lowering of the telescopic inner rod 406 will drive the mounting plate 601 to move down. The lowering of the mounting plate 601 will drive the push plate 602 to move down. The lowering of the push plate 602 will push the pressurizing air cylinder 603 to compress air and increase the air pressure in the medicine tank 2. In conjunction with the pump in the medicine tank 2, the liquid medicine will be squeezed through the hose 5 to the nozzle 410. By increasing the air pressure in the medicine tank 2, the flow rate of the sprayed medicine by the nozzle 410 can be effectively improved, as well as the effect of medicine atomization and subsequent mixing. During the lowering of the push plate 602, the threaded rod 604 will also move down. The lowering of the threaded rod 604 will drive the mounting ring 607 to rotate through the threaded groove on the surface of the threaded rod 604. The rotation of the mounting ring 607 will drive the stirring paddle 605 to rotate, which will agitate the medicine and prevent undissolved particles or concentrated medicine from settling, which would cause uneven distribution of effective ingredients in the spray liquid, resulting in high concentration spots of medicine during spraying, which would burn the leaves and cause crop deformity and wilting.

[0020] When the blower 409 works with the nozzle 410 to spray, the gear 3 705 is driven by a servo motor outside the fixed base 702 to start rotating. The rotation of the gear 3 705 drives the bidirectional rack 706 that meshes with it to move. The movement of the bidirectional rack 706 drives the gear 2 704 that meshes with it to rotate. The rotation of the gear 2 704 drives the guide plate 703 to rotate, guiding and fine-tuning the sprayed mist to further expand the accuracy and coverage of the mist spraying. The flowing air blown by the blower 409 also drives the fan blade 708 to rotate. The rotation of the fan blade 708 drives the mixing blade 709 to rotate. The rotation of the mixing blade 709 mixes the different agents sprayed by the nozzles 410 on both sides. By mixing agents with different mechanisms of action, multiple pests can be controlled at the same time, and it can also delay the development of pesticide resistance in pests. The use of agents with different mechanisms of action makes it difficult for pests to develop resistance to multiple components at the same time.

[0021] This invention provides a pre-set insecticidal device for controlling crop diseases and pests. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of the invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technologies.

Claims

1. A pre-set insecticidal device for the prevention and control of crop diseases and pests, comprising a base (1), characterized in that: The base (1) is fixedly connected to the top of the medicine box (2), the base (1) is rotatably connected to the top of the turntable seat (3), the turntable seat (3) is fixedly connected to the top of the adjustment mechanism (4), the medicine box (2) is connected to the hose (5), the adjustment mechanism (4) is installed with a pressurizing mechanism (6) on the outer wall, the adjustment mechanism (4) is provided with a flow guiding mechanism (7) inside, and the medicine box (2) is provided with a small pump for pumping the medicine to the hose (5). The adjustment mechanism (4) includes: a fixed frame (401), a motor (402), a gear (403), a telescopic outer rod (404), a hydraulic telescopic rod (405), a telescopic inner rod (406), a mounting bracket (407), an air duct (408), a blower (409), and a nozzle (410). The fixed frame (401) is fixedly connected to the top of the base (1), the motor (402) is fixedly connected to the inner wall of the fixed frame (401), and the gear (403) is fixedly connected to the output end of the motor (402). The outer rod (404) is fixedly connected to the top of the turntable seat (3), the hydraulic telescopic rod (405) is fixedly connected to the bottom of the inner wall of the telescopic inner rod (406), the telescopic inner rod (406) is slidably connected to the inner wall of the telescopic outer rod (404), the mounting bracket (407) is fixedly connected to the outer wall of the telescopic inner rod (406), the air duct (408) is fixedly connected to the inner wall of the mounting bracket (407), the blower (409) is fixedly connected to the inner wall of the mounting bracket (407), and the nozzle (410) is fixedly connected to the inner walls on both sides of the air duct (408).

2. The pre-set insecticidal device for controlling crop diseases and pests according to claim 1, characterized in that: The top of the telescopic inner rod (406) is fixedly connected to the output end of the hydraulic telescopic rod (405). The air outlet of the blower (409) is fixedly connected to the side of the air duct (408) near the mounting bracket (407). The nozzle (410) is connected to the hose (5). There are two medicine boxes (2), and the two medicine boxes (2) contain different medicines. The nozzles (410) on both sides of the air duct (408) are connected to different medicine boxes (2).

3. The pre-set insecticidal device for controlling crop diseases and pests according to claim 2, characterized in that: The pressurizing mechanism (6) includes: a mounting plate (601), a push plate (602), and a pressurizing cylinder (603). The mounting plate (601) is fixedly connected to the outer wall of the telescopic inner rod (406), the push plate (602) is fixedly connected to the bottom of the mounting plate (601), and the pressurizing cylinder (603) is fixedly connected to the inner wall of the medicine box (2).

4. A pre-set insecticidal device for controlling crop diseases and pests according to claim 3, characterized in that: The pressurizing mechanism (6) further includes: a threaded rod (604), a stirring paddle (605), a bearing ring (606), and a mounting ring (607). The threaded rod (604) is fixedly connected to the bottom of the push plate (602), the bearing ring (606) is fixedly connected to the top of the medicine box (2), the mounting ring (607) is rotatably connected to the inner wall of the bearing ring (606), and the stirring paddle (605) is fixedly connected to the bottom of the mounting ring (607).

5. A pre-set insecticidal device for controlling crop diseases and pests according to claim 4, characterized in that: The top of the pressurized air cylinder (603) is fixedly connected to the bottom of the push plate (602), and the inner wall of the mounting ring (607) is provided with a threaded groove.

6. A pre-set insecticidal device for controlling crop diseases and pests according to claim 5, characterized in that: The flow guiding mechanism (7) includes: a diffuser (701), a fixed seat (702), a guide plate (703), a second gear (704), a third gear (705), and a bidirectional rack (706). The diffuser (701) is fixedly connected to the side of the duct (408) away from the blower (409). The fixed seat (702) is fixedly connected to the outer surface of the diffuser (701). The guide plate (703) is rotatably connected to the inner wall of the diffuser (701). The second gear (704) is fixedly connected to the side of the guide plate (703) near the fixed seat (702). The bidirectional rack (706) is slidably connected to the surface of the fixed seat (702). The third gear (705) meshes with the bidirectional rack (706).

7. A pre-set insecticidal device for controlling crop diseases and pests according to claim 6, characterized in that: The flow guiding mechanism (7) further includes: a connector (707), a fan blade (708), and a mixing blade (709). The connector (707) is fixedly connected to the inner wall of the air duct (408), and the mixing blade (709) is rotatably connected to the inner wall of the connector (707).

8. A pre-set insecticidal device for controlling crop diseases and pests according to claim 7, characterized in that: The gear three (705) is driven by a servo motor fixed externally to the fixed base (702), and the fan blade (708) is fixedly connected to the side of the mixing paddle (709) near the blower (409).

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