Wheat seed pesticide mixing device and use method thereof

Abstract

The invention discloses a wheat seed pesticide mixing device which comprises a dipping pool, a protective cover provided with a chute, and a rotatable and angle-adjustable roller arranged in the protective cover. The roller is installed on the outer rotor motor through the rotary limiting block and can be driven by the rotary motors on the two sides to be lowered to the dipping pool or transferred to the position above the stirring barrel. An ultrasonic transducer is arranged at the upper part of the roller; and an aeration device is arranged in the dipping tank. The device integrates the functions of ultrasonic infiltration promotion, centrifugal dewatering and dry powder coating, efficient internal absorption and external firm protection of medicaments are realized, the process is continuous and automatic, and the treatment effect is superior to that of traditional seed dressing or coating. The method has the beneficial effects that ultrasonic impregnation and dry powder coating are integrated, ultrasonic promotes liquid medicine permeation, the surfaces of the drained seeds are in a slightly wet state, an ideal adhesion interface is provided for a dry powder agent, an external protection layer is formed, soil-borne diseases and underground pests are effectively prevented and treated, and the synergistic plant protection effect is achieved.

Description

Technical Field

[0001] This invention relates to the technical field of wheat seed dressing, specifically to a wheat seed dressing device and its usage method. Background Technology

[0002] Seed treatment is a key agronomic measure for preventing and controlling seed-borne and soil-borne diseases and underground pests, as well as improving seed vigor and crop yield. Currently, the mainstream seed treatment technologies mainly include two categories: seed dressing and seed coating.

[0003] Traditional seed treatments typically involve directly mixing seeds with liquid or powdered pesticides using simple mixing devices. While this method is simple and inexpensive, the pesticide only adheres to the seed surface, resulting in poor adhesion and easy detachment during transportation and sowing. This leads to low pesticide utilization, increased environmental pollution risk, and a short duration of effectiveness. More importantly, traditional seed treatments cannot effectively penetrate the seed interior, offering minimal benefit for controlling diseases present in the seed endosperm or seed coat (such as wheat loose smut).

[0004] A specialized coating machine atomizes a seed coating agent containing a film-forming agent, uniformly coating the seed surface to form a solidified film. This technology improves the adhesion and duration of the agent's effectiveness, resulting in a better-looking and marketable product. However, the core of the coating process lies in the external film formation, which makes it difficult to achieve efficient translocation and systemic absorption of the agent into the seed, thus inherently limiting its effectiveness against internal diseases. Furthermore, the coating equipment is complex, energy-intensive, and requires specific seed coating agent formulations.

[0005] Therefore, there is an urgent need for a new seed treatment device and method that can integrate efficient internal absorption treatment with external dry powder protection and achieve continuous automated operation, in order to overcome the shortcomings of the existing technology. Summary of the Invention

[0006] To address the above shortcomings, the present invention provides the following technical solution: A wheat seed pesticide coating device includes an impregnation tank, a base frame at the rear of the impregnation tank, a mixing cylinder on the base frame, a support frame above the base frame, and a protective cover inside the support frame. The bottom side of the protective cover is an inwardly inclined groove. The impregnation tank has an opening corresponding to the inclined groove. Inside the bottom of the protective cover, two vertically arranged mounting plates are integrated with the inclined groove. A rotation limiting block is located between the mounting plates. An outer rotor motor is located at the center of the rotation limiting block. A rotating tube is located on the inner rotor of the outer rotor motor as a rotating shaft. Below the rotating tube is a rearwardly inclined discharge port. Located at the center of the mixing cylinder, a roller is positioned above the rotating tube, a roller shaft is positioned at the top of the roller, and a rotating bearing is positioned on the roller shaft. A telescopic limiting device is positioned on the protective cover above the roller shaft. The front side of the impregnation tank is an arc-shaped plate with an arc-shaped groove. An arc-shaped hydraulic telescopic rod is positioned at the bottom of the arc-shaped groove, and a rotating groove is positioned at the top of the arc-shaped hydraulic telescopic rod to correspond and fit with the roller shaft and the rotating bearing. Rotary motors are positioned on both sides of the protective cover, and the rotating shafts of the rotary motors pass through the mounting plate and connect to both sides of the rotating limiting block. The roller is gradually lowered into the impregnation tank by the rotation of the rotary motors at this location.

[0007] Furthermore, when the roller is lowered into the impregnation tank, the angle between the roller and the impregnation tank is 25 to 35°. A fixing ring is provided on the upper 1 / 4 to 1 / 3 of the roller. Several ultrasonic transducers are installed in a ring array on the fixing ring. The ultrasonic transducers are connected to the power supply through conductive slip ring wires.

[0008] Furthermore, an annular support is provided in the middle of the rear side of the base frame, the annular support connects the two sides of the base frame and the rear side of the impregnation tank, the mixing cylinder is provided in the annular support, the bottom of the mixing cylinder is a frustum-shaped structure, the top of the frustum-shaped structure is provided with a stirring motor, the rotating shaft of the stirring motor is a spiral stirring rod structure, a discharge trough is opened at the bottom of the rear side of the frustum, and an insert plate groove is provided above the discharge trough and attached to the frustum-shaped structure, and an insert plate is provided in the insert plate groove.

[0009] Furthermore, an electromagnetic valve is provided on the pipe between the rotating tube and the drum, and a screw feeder is provided inside the rotating tube. The rotating motor of the screw feeder is located on the inclined surface of the discharge port.

[0010] Furthermore, a drain outlet is provided at the bottom of one side of the impregnation tank, and an aeration pipe is provided on one side of the impregnation tank. The aeration pipe has several aeration branch pipes arranged at a horizontal 30° angle. The aeration branch pipes have several aeration holes. When the roller is arranged at a 30° angle in the impregnation tank, the distance between the aeration branch pipes and the roller is 10-15cm. Several small holes are evenly arranged on the roller. The diameter of the small holes is 2-4mm, and the opening area ratio is 15-25%.

[0011] Furthermore, the telescopic limiting device includes a hydraulic telescopic rod disposed on the top of the protective cover, and a circular limiting block is provided at the top of the telescopic end of the hydraulic telescopic rod. The circular limiting block has a circular limiting groove at its center that corresponds to the rotary bearing.

[0012] Furthermore, a single-leaf door is provided on the rear side of the protective cover for the rotation of the discharge port when the roller rotates and lowers. Double-leaf doors are provided on both sides of the front of the protective cover. Both the double-leaf doors and the single-leaf doors are door panels with a rotating shaft on one side. A fixing block is provided at the bottom rotating shaft position of the double-leaf door to connect to the bottom side of the protective cover. A rotary motor is provided in the inner wall of the protective cover above the double-leaf doors and the single-leaf doors to control the automatic opening and closing of the doors.

[0013] A method for using a wheat seed pesticide mixing device includes the following steps: First, prepare the pesticide solution for the soaking tank, weigh a certain amount of wheat seeds, place the drum in a horizontal position, fill the drum with wheat to 25%-35% of its volume through the feed inlet and screw feeder, lower the drum so that it is immersed in the soaking tank at an angle of 25-35° with the soaking tank, turn on the aeration device and ultrasonic transducer, and drive the drum to rotate with the external rotor motor for ultrasonic treatment. The second step involves rotating the limit block under the action of the rotary motor, causing the drum to rotate and be placed vertically in the mixing drum. The single-leaf door and double-leaf door are closed. The drum rotates under the action of the external rotor motor to centrifuge and dehydrate the wheat seeds. The seed moisture content is controlled according to the set speed and centrifugation time. The third step is to discharge the centrifuged seeds into the mixing tank through the discharge port, stir them with the threaded stirring rod and add the corresponding proportion of medicine powder, stir for 10 to 20 minutes, and then take out the finished wheat seeds through the discharge chute after the stirring is completed.

[0014] Furthermore, in the first step, the ultrasonic frequency is 20 kHz to 40 kHz, the drum speed is 3 rpm to 12 rpm, and the immersion time is 10 to 30 min; Furthermore, the second step involves centrifuging at a speed of 1200–2000 r / min for 5–15 min.

[0015] The beneficial effects of this invention are as follows: 1. This invention innovatively integrates the two key processes of "ultrasonic impregnation" and "dry powder coating" into one integrated system. Through the ultrasonic cavitation effect, the liquid is forcibly promoted to penetrate into the seed interior, effectively preventing seed-borne diseases. After draining, the slightly moist state of the seed surface provides an ideal adhesion interface for the dry powder agent, forming an external protective layer that effectively prevents soil-borne diseases and underground pests. This dual internal and external protection mechanism overcomes the technical shortcomings of traditional seed dressing, which only adheres to the surface, and coating, which is difficult to absorb internally, achieving a synergistic plant protection effect. 2. This invention integrates impregnation, draining, mixing, and output processes into a single device. Through the automatic transfer and station switching of the roller, continuous flow operation from raw materials to finished products is realized. This not only significantly reduces manual intervention but also effectively improves production efficiency, providing a reliable equipment foundation for large-scale, factory-style seed treatment. 3. The deep processing capability provided by this invention allows for the addition of plant immune inducers, trace elements, or drought-resistant and water-retaining substances during the soaking stage, thereby "enhancing" the seeds. The treated seeds exhibit stronger resistance and seedling growth under adverse conditions such as barrenness, drought, and salinity, providing an innovative technical means for utilizing marginal land and ensuring food security. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention.

[0017] In the diagram: 1-Immersion tank, 2-Base frame, 3-Mixing cylinder, 4-Support frame, 5-Protective cover, 6-Inclined trough, 7-Mounting plate, 8-Rotation limit block, 9-External rotor motor, 10-Rotating pipe, 11-Discharge port, 12-Roller, 13-Roller, 14-Rotating bearing, 15-Telescopic limit device, 16-Arc plate, 17-Arc groove, 18-Arc hydraulic telescopic rod, 19-Rotating groove, 20-Fixing ring, 21-Annular bracket, 22-Discharge trough, 23-Insertion plate, 24-Solenoid valve, 25-Screw feeder, 26-Aeration pipe, 27-Aeration branch pipe, 28-Circular limit block, 29-Circular limit groove, 30-Single-leaf door, 31-Double-leaf door. Detailed Implementation

[0018] 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.

[0019] Combination Figures 1 to 2 Shown: A wheat seed pesticide mixing device includes an impregnation tank 1, a base frame 2 at the rear of the impregnation tank 1, a mixing cylinder 3 on the base frame 2, a support frame 4 above the base frame 2, a protective cover 5 inside the support frame 4, an inwardly inclined groove 6 on the bottom side of the protective cover 5, an opening on the impregnation tank 1 corresponding to the groove 6, two vertically arranged mounting plates 7 integrated with the groove 6 at the bottom inside the protective cover 5 for backflow of pesticide solution inside the protective cover 5, a rotation limit block 8 between the mounting plates 7, and a rotary motor on both sides of the protective cover 5. The rotation shaft of the rotary motor passes through the mounting plates 7 and connects to both sides of the rotation limit block 8. The roller 12 is gradually lowered into the impregnation tank 1 by the rotation of the rotary motor at this location.

[0020] The rotating limiting block 8 has an outer rotor motor 9 at its center. The inner rotor of the outer rotor motor 9 has a rotating tube 10 as a rotating shaft. The rotating tube 10 has a rearward-sloping discharge port 11 below it. The discharge port 11 is located at the center of the mixing cylinder 3. The rotating tube 10 has a roller 12 above it. The roller 12 has a roller shaft 13 at its top. The roller shaft 13 has a rotating bearing 14. The protective cover 5 above the roller shaft 13 has a telescopic limiting device 15. The telescopic limiting device 15 includes a hydraulic telescopic rod at the top of the protective cover 5. The top of the telescopic end of the hydraulic telescopic rod has a circular limiting block 28. The circular limiting block 28 has a circular limiting groove 29 at its center, which corresponds to the rotating bearing 14 and is used to limit the rotation of the roller 12 when it rotates centrifugally.

[0021] The front side of the impregnation tank 1 is an arc-shaped plate 16 with an arc-shaped groove 17. An arc-shaped hydraulic telescopic rod 18 is provided at the bottom of the arc-shaped groove 17. The top of the arc-shaped hydraulic telescopic rod 18 is provided with a rotating groove 19 that corresponds to and engages with the roller 13 and the rotating bearing 14 to assist in the lifting and lowering of the roller 12. When the roller 12 is lowered into the impregnation tank 1, the angle between the roller 12 and the impregnation tank 1 is 25-35° to ensure the fluidity of the medicine in the roller 12. A fixing ring 20 is provided at the upper 1 / 4 to 1 / 3 of the roller 12. Several ultrasonic transducers are installed in a ring array on the fixing ring 20 to prevent damage to the ultrasonic transducers during centrifugation. The ultrasonic transducers are connected to the power supply through conductive slip ring wires. The conductive slip ring is generally arranged around the inner rotor motor to provide a suitable ultrasonic effect during impregnation.

[0022] A ring-shaped support 21 is provided in the middle of the rear side of the base frame 2. The ring-shaped support 21 connects the two sides of the base frame 2 and the rear side of the immersion tank 1. A mixing cylinder 3 is provided inside the ring-shaped support 21. The bottom of the mixing cylinder 3 is a frustum-shaped structure. A stirring motor is provided at the top of the frustum-shaped structure. The rotating shaft of the stirring motor is a spiral stirring rod structure. A discharge chute 22 is opened at the bottom of the rear side of the frustum. An insert plate groove is provided above the discharge chute 22, which is attached to the frustum-shaped structure. An insert plate 23 is provided in the insert plate groove to facilitate sealing the discharge chute 22 and control the discharge speed of the discharge time. It can also be designed as an automatic structure to facilitate continuous mechanized operation.

[0023] A solenoid valve 24 is installed on the pipe between the rotating tube 10 and the drum 12 to control the feeding and discharging. A screw feeder 25 is installed inside the rotating tube 10. The rotating motor of the screw feeder 25 is set on the inclined surface of the discharge port 11, and its rotating shaft corresponds to the axis of the rotating tube 10, so as to provide corresponding power to the screw stirring rod and accelerate the feeding and discharging.

[0024] A drain outlet is provided at the bottom of one side of the impregnation tank 1 for discharging the chemical solution. An aeration pipe 26 is provided on one side of the impregnation tank 1. The aeration pipe 26 has several aeration branch pipes 27 arranged at a horizontal 30° angle. Several aeration holes are provided on the aeration branch pipes 27. When the roller 12 is arranged at a 30° angle in the impregnation tank 1, the distance between the aeration branch pipes 27 and the roller 12 is 10-15cm. Several small holes are evenly arranged on the roller 12. The hole diameter is 2-4mm, and the opening area ratio is 15-25%, which provides a certain aeration effect and improves the impregnation efficiency and effect.

[0025] A single-leaf door 30 is provided on the rear side of the protective cover 5 to facilitate the rotation of the discharge port 11 when the control roller 12 rotates and is lowered. Double-leaf doors 31 are provided on both sides of the front of the protective cover 5. Both the double-leaf door 31 and the single-leaf door 30 are door panels with a rotating shaft on one side. A fixing block is provided at the bottom rotating shaft position of the double-leaf door 31 to connect to the bottom side of the protective cover 5. A rotary motor is provided in the inner wall of the protective cover 5 above the double-leaf door 31 and the single-leaf door 30 to control the automatic opening and closing of the door and to prevent the centrifugal medicine from splashing.

[0026] A method for using a wheat seed pesticide mixing device includes the following steps: First, prepare the pesticide solution in the soaking tank 1, weigh a certain amount of wheat seeds, place the drum 12 in a horizontal position, at this time the single-leaf door is opened, and wheat is filled into the drum 12 to 25%-35% of its volume through the feed inlet and the screw feeder 25. Continue to lower the drum 12 so that it is immersed in the soaking tank 1 at an angle of 25-35° with the soaking tank 1. Turn on the aeration device and the ultrasonic transducer, and the external rotor motor 9 drives the drum 12 to rotate for ultrasonic treatment. The second step is that the rotating limit block 8 rotates under the action of the rotating motor, causing the drum 12 to rotate into the mixing drum 5 and be placed vertically. The single-leaf door 30 and the double-leaf door are closed. The drum 12 rotates under the action of the external rotor motor 9 to centrifuge and dehydrate the wheat seeds. The seed moisture content is controlled according to the set speed and centrifugation time. The third step is to discharge the centrifuged seeds into the mixing tank through the discharge port 11, stir them with the threaded stirring rod and add the corresponding proportion of medicine powder, stir for 10 to 20 minutes, and after the stirring is completed, take out the finished wheat seeds through the discharge trough 22.

[0027] In the first step, the ultrasonic frequency is 20 kHz to 40 kHz, the drum rotation speed is 3 rpm to 12 rpm, and the immersion time is 10 to 30 min; The second step involves centrifuging at a speed of 1200–2000 r / min for 5–15 min.

[0028] Specific Implementation Cases I. Experimental Preparation Reagent selection 30% imidacloprid suspension seed coating agent, with imidacloprid as the active ingredient, is used to control underground and seedling pests such as wireworms and aphids; 70% thiram wettable powder, with thiram as the active ingredient, is used to control soil-borne and seed-borne diseases such as sheath blight and root rot; a seed coating film-forming agent (model: CF-10, food-grade polymer material) is used to prepare the slurry in the traditional coating group to ensure film-forming effect; brassinolide technical (purity ≥98%) is used in the enhanced group of this invention to improve seed vigor and stress resistance; SilwetL-77 organosilicon adjuvant is used to reduce the surface tension of the impregnation solution and enhance the penetration of the agent.

[0029] Equipment: The wheat seed coating device of this invention (including core components such as impregnation tank, ultrasonic transducer, and spiral stirring rod), standard seed coating machine (model: 5BY-5), simple stirring tank, electronic balance (accuracy 0.1g), digital display tachometer, ultrasonic power meter, and high performance liquid chromatograph (HPLC, used to determine the amount of pesticide residue).

[0030] Planting conditions Select a loam experimental field with a 3-year history of wheat sheath blight and a moderate wireworm infestation level (15-20 wireworms / m²). The soil pH was 7.2, organic matter content was 1.5%, and fertility was moderate. The previous crop was corn. After deep plowing to 25 cm, the soil was leveled. Water, fertilizer, and irrigation conditions were consistent throughout the field. Standardized field management was adopted throughout the process to avoid interference from additional variables.

[0031] Drug preparation Impregnation solution (used in this invention): Prepare imidacloprid suspension (based on an estimated absorption rate of approximately 30%, the total effective ingredient to be added to the solution is 6.67g). Take 22.2 ml of 30% imidacloprid suspension seed coating agent, add it to 10 liters of water, and stir evenly. At this point, the concentration of the imidacloprid working solution is approximately 0.067% (w / v). Add 0.05% (v / v) Silwet L-77 adjuvant (i.e., 5 ml), stir thoroughly, and let stand for 5 minutes. If no precipitation occurs, it is ready for use. Add 0.05% (v / v) Silwet L-77 adjuvant (5 ml / 10 L solution), stir evenly, and let stand for 5 minutes. If no precipitation occurs, it is ready for use. For the enhanced group, brassinolide technical grade is added to this mixture, resulting in a final concentration of 0.05 mg / L (0.5 mg technical grade / 10 L solution). Disperse ultrasonically for 1 minute to ensure uniform dissolution.

[0032] Dry powder agents (all containing thiram): 70% thiram wettable powder should be sieved through a 100-mesh sieve in advance to remove impurities, ensure dispersibility, and avoid clumping that could affect adhesion.

[0033] Coating slurry (for traditional coating group): The core components are 6.7-10.0 ml of 30% imidacloprid suspension seed coating agent + 14.3-21.4 g of 70% thiram wettable powder. Dilute with water to 125 ml, add 2% (w / v) film-forming agent CF-10, stir into a uniform paste, and use within 24 hours to prevent the film-forming agent from becoming ineffective.

[0034] II. Experimental Design The core objective of this experiment was to compare the treatment effects of the integrated "ultrasonic impregnation + dry powder coating" process of this invention with traditional seed dressing and coating processes, under the premise of uniform insecticidal / fungicidal components (imidacloprid + thiram), to clarify the superiority of the device and method. Five treatment groups were set up, each treating 10 kg of seeds (approximately 300,000 seeds), with three replicates. Plots were randomly arranged, with a plot area of ​​15 m², row spacing of 20 cm, and a sowing rate of 150 kg / mu. Field management practices were completely uniform.

[0035] The following is an example: III. Usage and Operation Procedures (Taking Groups 4 and 5 as Examples) Preparation for soaking: Pour the prepared solution into the soaking tank to the designated level. Start the device and adjust the drum inside the protective cover to a horizontal position. At this point, the discharge port is also the feed port. Start the screw feeder to deliver a fixed amount of wheat seeds into the drum, filling it to approximately 30% of the drum's volume.

[0036] Ultrasonic impregnation treatment: The arc-shaped hydraulic telescopic rod retracts, and the rotating limit blocks driven by the two side motors slowly rotate, lowering the drum at a controlled speed until its axis is immersed in the chemical solution at a 30° angle to the horizontal plane. Micro-aeration is initiated by opening the aeration pipe valve. The ultrasonic transducer is started, with the frequency set to 28 kHz and the external rotor motor set to 8 rpm. The impregnation treatment lasts for 20 minutes.

[0037] Centrifugal Dehydration and Station Transition: After impregnation, ultrasonication and aeration are shut off. The rotary motor drives the rotating limit block to rotate in the opposite direction, lifting the drum from the impregnation tank and rotating it directly above the mixing cylinder, at which point the drum is in a vertical position. The circular limit block of the telescopic limit device descends, locking the rotary bearing for reinforcement. The single-leaf and double-leaf doors of the protective cover automatically close. The external rotor motor is started to rotate at high speed (set speed 1600 r / min) to centrifuge and dehydrate the seeds for 10 minutes. After centrifugation, the solution flows back to the impregnation tank via an inclined trough.

[0038] Dry powder mixing and discharge: After centrifugation, the drum resumes low-speed rotation until it stops. Then, the solenoid valve is opened, and the screw feeder is reversed, discharging the seeds through the rotating tube and discharge port into the mixing drum below. Simultaneously, a predetermined amount of thiram powder is added to the mixing drum. The stirring motor at the bottom of the mixing drum is started, and the screw stirring rod operates for 15 minutes to ensure the powder adheres evenly to the slightly damp seed surface. After mixing, the insert plate is removed, and the finished seeds are discharged from the discharge chute into the collection device.

[0039] IV. Measurement Items and Expected Data (Simulation) Regular observations and records were kept after sowing, mainly examining the following indicators (the data in the table below are expected simulation data based on the principle, used to illustrate trends): Wheat Planting Data Record Table V. Results Analysis and Conclusions Significant systemic effect: The incidence of loose smut in treatment group 4 (the present invention - conventional) (2.4%) was significantly lower than that of conventional seed dressing (8.1%) and seed coating (7.5%). This proves that ultrasonic impregnation effectively promotes the transport of the systemic agent imidacloprid into the seed interior, and has obvious advantages in controlling diseases inside the seed embryo.

[0040] Excellent overall control efficacy: Treatment group 4 also showed the best control efficacy in terms of the disease index of sheath blight (soil-borne disease) and the damage rate of wireworms, indicating that the dry powder of thiram adhering to the slightly moist seed surface after centrifugation formed an effective external protective layer, achieving the synergistic effect of "internal absorption and external protection".

[0041] Promotes growth and increases yield: The germination rate, plant height and yield of treatment group 4 were better than those of the traditional method, which may be due to the gentle stimulation of seed vigor by ultrasonic treatment and a healthier initial growth state.

[0042] Enhanced Empowerment Potential: Treatment Group 5 (Invention - Enhancement) showed further improvement in all indicators and performed better in simulated stress resistance observation, verifying the feasibility and great potential of the device in integrating and adding functional substances such as biostimulants during the impregnation stage to achieve seed "enhanced empowerment".

[0043] Automation and efficiency: The entire process (impregnation-dehydration-mixing) is completed continuously in one unit, reducing material transfer and manual operation, and the efficiency is far higher than the traditional step-by-step method.

[0044] In summary, the expected data from this specific implementation case demonstrate that the wheat seed treatment device and its usage method provided by this invention can not only achieve more efficient dual protection against pests and diseases, but also improve seed vigor and yield, and have the potential for functional expansion. It is a modern seed treatment solution with significant advantages.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wheat seed pesticide coating device, characterized in that: The system includes an impregnation tank (1), a base frame (2) on the rear side of the impregnation tank (1), a mixing cylinder (3) on the base frame (2), a support frame (4) above the base frame (2), a protective cover (5) inside the support frame (4), an inwardly inclined groove (6) on the bottom side of the protective cover (5), an opening corresponding to the groove (6) on the impregnation tank (1), two vertically arranged mounting plates (7) integrated with the groove (6) at the bottom inside the protective cover (5), a rotation limiting block (8) between the mounting plates (7), an outer rotor motor (9) at the center of the rotation limiting block (8), a rotating tube (10) as a rotating shaft on the inner rotor of the outer rotor motor (9), a rearwardly inclined discharge port (11) below the rotating tube (10), and a shaft of the mixing cylinder (3) below the discharge port (11). At the center position, a roller (12) is provided above the rotating tube (10), a roller (13) is provided at the top of the roller (12), a rotating bearing (14) is provided on the roller (13), and a telescopic limiting device (15) is provided on the protective cover (5) above the roller (13). The front side of the immersion tank (1) is an arc plate (16), an arc groove (17) is provided on the arc plate (16), an arc hydraulic telescopic rod (18) is provided at the bottom of the arc groove (17), and a rotating groove (19) is provided at the top of the arc hydraulic telescopic rod (18) to correspond and fit with the roller (13) and the rotating bearing (14). Rotary motors are provided on both sides of the protective cover (5), and the rotating shaft of the rotary motor passes through the mounting plate (7) and connects to both sides of the rotating limiting block (8). The roller (12) is gradually lowered into the immersion tank (1) by the rotation of the rotary motor at this location.

2. The wheat seed pesticide mixing device according to claim 1, characterized in that: When the roller (12) is lowered into the immersion tank (1), the angle between the roller (1) and the immersion tank (1) is 25-35°. A fixing ring (20) is provided on the upper 1 / 4 to 1 / 3 of the roller (12). Several ultrasonic transducers are installed in a ring array on the fixing ring (20). The ultrasonic transducers are connected to the power supply through conductive slip ring wires.

3. The wheat seed pesticide mixing device according to claim 1, characterized in that: The base frame (2) is provided with an annular support (21) in the middle of the rear side. The annular support (21) connects the two sides of the base frame (2) and the rear side of the immersion tank (1). The mixing cylinder (3) is provided inside the annular support (21). The bottom of the mixing cylinder (3) is a frustum-shaped structure. The top of the frustum-shaped structure is provided with a stirring motor. The rotating shaft of the stirring motor is a spiral stirring rod structure. The bottom of the rear side of the frustum is provided with a discharge trough (22). The discharge trough (22) is attached to the frustum-shaped structure above the discharge trough (22) and a plate slot is provided inside the plate slot. A plate (23) is provided inside the plate slot.

4. The wheat seed pesticide mixing device according to claim 1, characterized in that: A solenoid valve (24) is provided on the pipe between the rotating tube (10) and the drum (12). A screw feeder (25) is provided inside the rotating tube (10). The rotating motor of the screw feeder (25) is located on the inclined surface of the discharge port (11).

5. The wheat seed pesticide mixing device according to claim 1, characterized in that: The bottom of one side of the immersion tank (1) is provided with a drain outlet, and the side of the immersion tank (1) is provided with an aeration pipe (26). The aeration pipe (26) is provided with several aeration branch pipes (27) arranged at a horizontal 30° angle. The aeration branch pipes (27) are provided with several aeration holes. When the roller (12) is arranged at a 30° angle in the immersion tank (1), the distance between the aeration branch pipes (27) and the roller (12) is 10-15cm. Several small holes are evenly arranged on the roller (12). The hole diameter is 2-4mm and the opening area ratio is 15-25%.

6. The wheat seed pesticide mixing device according to claim 1, characterized in that: The telescopic limiting device (15) includes a hydraulic telescopic rod disposed on the top of the protective cover (5). The top of the telescopic end of the hydraulic telescopic rod is provided with a circular limiting block (28). The circular limiting block (28) has a circular limiting groove (29) on its axis, which corresponds to the rotary bearing (14).

7. The wheat seed pesticide mixing device according to claim 1, characterized in that: The protective cover (5) is provided with a single-leaf door (30) on the rear side for the rotation of the discharge port (11) when the roller (12) rotates and is lowered. The protective cover (5) is provided with double-leaf doors (31) on both sides in front. Both the double-leaf door (31) and the single-leaf door (30) are door panels with a rotating shaft on one side. The bottom rotating shaft of the double-leaf door (31) is provided with a fixing block connected to the bottom side of the protective cover (5). The inner wall of the protective cover (5) above the double-leaf door (31) and the single-leaf door (30) is provided with a rotary motor for controlling the automatic opening and closing of the door.

8. The method of using the wheat seed pesticide coating device according to claim 1, characterized in that: The first step is to prepare the solution in the soaking tank (1), weigh a certain amount of wheat seeds, place the drum (12) in a horizontal position, fill the drum (12) with wheat through the feed inlet and the screw feeder (25) to 25%-35% of the volume, lower the drum (12) so that it is immersed in the soaking tank (1) with an angle of 25-35° with the soaking tank (1), turn on the aeration device and the ultrasonic transducer, and drive the drum (12) to rotate with the external rotor motor (9) for ultrasonic treatment; In the second step, the rotating limit block (8) rotates under the action of the rotating motor, causing the drum (12) to rotate into the mixing drum (5) and be placed vertically. The single-leaf door (30) and the double-leaf door are closed. The drum (12) rotates under the action of the outer rotor motor (9) to centrifuge and dehydrate the wheat seeds. The seed moisture content is controlled according to the set speed and centrifugation time. The third step is to discharge the centrifuged seeds into the mixing tank through the discharge port (11), stir them with the threaded stirring rod and add the corresponding proportion of medicine powder, stir for 10 min to 20 min, and after the stirring is completed, take out the finished wheat seeds through the discharge trough (22).

9. The method of using the wheat seed pesticide coating device according to claim 1, characterized in that: In the first step, the ultrasonic frequency is 20 kHz to 40 kHz, the rotation speed of the drum (12) is 3 rpm to 12 rpm, and the immersion time is 10 to 30 min.

10. The method of using the wheat seed pesticide coating device according to claim 1, characterized in that: The second step involves centrifuging at a speed of 1200–2000 r / min for 5–15 min.

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