Soybean and corn composite pesticide spraying device

Abstract

The utility model relates to the technical field of agricultural pesticide spraying, and discloses a soybean and corn composite pesticide spraying device, which comprises a movable bearing part configured as a supporting and moving device; the corn pesticide applying part is arranged on the movable bearing part, and the corn pesticide applying part is configured to spray pesticide liquid to corn crops; the soybean pesticide application part is arranged on the movable bearing part, and the soybean pesticide application part is configured to spray pesticide liquid to soybean crops; the direction adjusting part is connected with the corn pesticide applying part and the soybean pesticide applying part, and the direction adjusting part is configured to adjust the pesticide spraying direction; the backflow part is connected with the corn pesticide application part and the soybean pesticide application part, and the backflow part is configured to enable part of the pesticide liquid output by the liquid pump to flow back and drive an impeller arranged in the backflow part to rotate so as to stir the pesticide liquid. Through the design of composite pesticide spraying and intelligent regulation and control, pesticide spraying is accurate and efficient, pesticide liquid is saved and utilized, and then high efficiency, economical efficiency and environment friendliness of the whole pesticide spraying operation are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural pesticide spraying technical field, specifically, relate to a kind of soybean corn composite pesticide spraying device. BACKGROUND

[0002] In the agricultural production of soybean and corn composite planting, pesticide spraying is an important link to ensure the healthy growth of crops. The basic operation requirement is to effectively control diseases and pests through pesticide spraying. The existing pesticide spraying device usually includes a mobile carrying unit, a pesticide storage unit, a pumping unit and a spraying unit, which can meet the pesticide spraying demand of single crop or general scene to some extent.

[0003] However, the existing pesticide spraying device still has obvious deficiencies when dealing with the composite planting mode of soybean and corn with high and low collocation and different plant types. On the one hand, most of the devices lack special pesticide spraying systems for different crops, and only store general pesticides in a single pesticide tank, which cannot store special pesticides and adjust the spraying parameters according to the growth characteristics and pest rules of soybean and corn, respectively, resulting in either the pesticide not covering the lower canopy when spraying corn or the pesticide drifting to the corn plants when spraying soybean, which not only affects the spraying effect but also causes pesticide waste. On the other hand, the spraying direction is often fixed or inconvenient to adjust, making it difficult to adapt to the crop canopy structure, affecting the effective adhesion and coverage of the pesticide on the leaf surface. In addition, the pesticide in the tank is prone to sedimentation, causing clogging of the spray head or uneven spraying concentration, affecting the continuity of the operation. At the same time, the system has low intelligence, cannot automatically adjust the pesticide spraying parameters according to the crop type and height, and causes low operation efficiency and increased labor cost.

[0004] Therefore, how to realize the integrated design of special pesticide spraying, flexible adjustment, anti-clogging and intelligent control for composite planting mode in the pesticide spraying device not only ensures the efficient and accurate spraying effect, but also improves the utilization efficiency of pesticide and the automation level of operation, which has become a technical problem to be solved in the field. UTILITY MODEL CONTENTS

[0005] In view of the above problems, the utility model provides a soybean corn composite pesticide spraying device to solve the problems of inaccurate pesticide application, uneven canopy coverage due to inconvenient adjustment of spraying direction, clogging of spray head due to easy sedimentation of pesticide, low operation efficiency and resource waste caused by unstable concentration.

[0006] The utility model provides a soybean corn composite pesticide spraying device, comprising:

[0007] A mobile carrying part is configured to support and move the device.

[0008] A corn pesticide application part is arranged on the mobile carrier part, and is configured to spray pesticide to a corn crop.

[0009] A soybean pesticide application part is arranged on the mobile carrier part, and is configured to spray pesticide to a soybean crop.

[0010] An orientation adjustment part is connected to the corn pesticide application part and the soybean pesticide application part respectively, and is configured to adjust the spraying direction.

[0011] A reflux part is connected to the corn pesticide application part and the soybean pesticide application part respectively, and is configured to reflux part of the pesticide output by the liquid pump.

[0012] Further, the mobile carrier part comprises:

[0013] A walking wheel is configured to move the device.

[0014] A lifting support frame is connected to the walking wheel, and is configured to adjust the height of the device.

[0015] An installation platform is arranged on the lifting support frame, and is configured to support the pesticide application part.

[0016] A moving handle is arranged on one side of the installation platform, and is configured to operate the pushing device.

[0017] Further, the corn pesticide application part comprises:

[0018] A corn pesticide tank is provided with a corn pesticide inlet, and is configured to store corn pesticide.

[0019] A corn liquid pump is connected to the corn pesticide tank, and is configured to pump the pesticide.

[0020] A corn liquid delivery pipe is connected to the corn liquid pump, and is configured to deliver the pesticide.

[0021] A corn spray rod assembly is connected to the corn liquid pump, and is configured to deliver the pesticide.

[0022] A corn spray head is arranged at the output end of the corn spray rod assembly, and is configured to atomize and spray the pesticide.

[0023] The input end of the corn liquid delivery pipe is provided with a corn pesticide anti-blocking filter cap, which is configured to filter solid impurities in the pesticide.

[0024] Further, the soybean pesticide application part comprises:

[0025] The soybean medicine liquid tank is provided with a soybean medicine liquid inlet, and is configured to store medicine liquid for soybeans.

[0026] The soybean liquid pump is connected with the soybean medicine liquid tank, and is configured to pump the medicine liquid.

[0027] The soybean liquid pump is connected with the soybean medicine liquid tank, and is configured to pump the medicine liquid.

[0028] The soybean liquid pump is connected with the soybean medicine liquid tank, and is configured to pump the medicine liquid.

[0029] The soybean liquid pump is connected with the soybean medicine liquid tank, and is configured to pump the medicine liquid.

[0030] The input end of the soybean liquid pipe is provided with a soybean medicine liquid anti-blocking filter cap, which is configured to filter solid impurities in the medicine liquid.

[0031] Further, the orientation adjusting part comprises:

[0032] The horizontal rotation mechanism is connected with the corn spray rod assembly and the soybean spray rod assembly respectively, and is configured to adjust the horizontal direction of the spray rod.

[0033] The pitch adjusting mechanism is connected with the corn spray rod assembly and the soybean spray rod assembly respectively, and is configured to adjust the vertical direction of the spray rod.

[0034] Further, the backflow part comprises:

[0035] The backflow branch pipe is connected at one end to the outlet end of the corresponding liquid pump, and at the other end to the bottom of the corresponding medicine liquid tank.

[0036] The rotary impeller is arranged in the bottom of the medicine liquid tank and connected with the backflow branch pipe, and is configured to rotate and stir the medicine liquid under the impact of the backflow medicine liquid.

[0037] Further, the spray frame is arranged on the mobile bearing part, and is configured to support the corn spray rod assembly and the soybean spray rod assembly.

[0038] Further, the control cabinet is arranged on one side of the spray frame, and is configured to independently control the spray parameters of the corn pesticide application part and the soybean pesticide application part, and automatically adjust the lifting height of the mobile bearing part according to the height of the crops.

[0039] Further, the control cabinet is further configured to automatically identify and switch to the corresponding spray mode according to the type of crops.

[0040] Compared with existing technologies, the beneficial effects of this utility model are as follows: By setting up a mobile support unit, the problem of stable movement on gravel and dirt roads in the field is solved, and the operating height can be adjusted in real time according to the differences in plant height at different growth stages of corn and soybeans, providing a stable mechanical foundation for subsequent precise spraying and significantly improving the adaptability and operational accuracy of the device in mixed planting scenarios. Secondly, in the design of the application unit, the separate corn application unit and soybean application unit realize the separate storage, delivery, and application of special pesticide solutions for the two crops, ensuring the targeting of pesticide selection and the independence of application concentration, thus guaranteeing the spraying effect from the source. In addition, the orientation adjustment unit, through the cooperation of the horizontal rotation mechanism and the pitch adjustment mechanism, realizes multi-dimensional flexible adjustment of the spray boom direction, enabling the nozzle to accurately aim at the crop canopy, which not only improves the effective adhesion rate of the pesticide solution but also avoids pesticide drift and waste caused by improper spraying direction. The reflux section guides a portion of the pesticide solution back to the pesticide tank via a reflux branch pipe, driving the impeller to rotate and achieving continuous agitation of the pesticide solution. This effectively prevents sedimentation and stratification, as well as nozzle clogging, ensuring uniform spray concentration and continuous operation. Finally, the control cabinet automatically identifies and switches spray modes based on crop type, and automatically adjusts the device's height according to crop height, achieving intelligent and precise spraying operations and significantly reducing operational complexity and labor costs. Actual operation shows that through the synergistic effect of the above units, this device has achieved significant technological advancements: the discrete spraying system improves the control efficacy against target pests and diseases in both crops by approximately 25%; the directional adjustable spray bar increases the canopy coverage of the pesticide solution by approximately 30%; the reflux agitation mechanism reduces nozzle clogging by over 90% and ensures stable pesticide concentration; and the intelligent control system saves approximately 15% to 20% of pesticide solution and improves operational efficiency by approximately 40%. This solution, through the integrated design of combined spraying and intelligent control, effectively controls pesticide and labor costs while improving spraying effectiveness. It can be seen that this application has achieved a full-process optimized design from mobile support, dedicated spraying, direction adjustment, anti-clogging and mixing to intelligent control. It not only significantly improves the spraying effect and operation quality in the compound planting mode, but also reduces operating costs through pesticide saving and efficiency improvement, making spraying operations more precise, efficient and economical. Attached Figure Description

[0041] Figure 1 A schematic diagram of the overall structure of a soybean and corn combined spraying device provided in an embodiment of this utility model;

[0042] Figure 2 A schematic diagram of the orientation adjustment part of a soybean and corn combined spraying device provided in an embodiment of this utility model;

[0043] Figure 3 A schematic diagram of the internal structure of the liquid tank of a soybean and corn combined spraying device provided in this embodiment of the present invention;

[0044] Figure 4 A schematic diagram of the working process of a soybean and corn combined spraying device provided in this embodiment of the present invention;

[0045] The components are as follows: 110, walking wheels; 120, lifting support frame; 130, installation platform; 140, moving handle; 210, corn liquid tank; 220, corn liquid pump; 230, corn spray boom assembly; 240, corn nozzle; 250, corn liquid inlet; 260, corn infusion pipe; 270, corn liquid anti-clogging filter cap; 310, soybean liquid tank; 320, soybean liquid pump; 330, soybean spray boom assembly; 340, soybean nozzle; 350, soybean liquid inlet; 410, horizontal rotation mechanism; 420, pitch adjustment mechanism; 510, return branch pipe; 520, rotating impeller; 600, spray frame; 700, control cabinet. Detailed Implementation

[0046] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0047] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0048] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0049] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] like Figures 1-3 As shown in some embodiments of this application, a soybean-corn combined spraying device includes: a movable support unit, a corn spraying unit, a soybean spraying unit, an orientation adjustment unit, and a return unit.

[0051] Specifically, the mobile carrier is configured as a support and moving device; the corn spraying unit is mounted on the mobile carrier and is configured to spray pesticide solution onto corn crops; the soybean spraying unit is mounted on the mobile carrier and is configured to spray pesticide solution onto soybean crops; the orientation adjustment unit is connected to the corn spraying unit and the soybean spraying unit and is configured to adjust the spraying direction; the reflux unit is connected to the corn spraying unit and the soybean spraying unit respectively and is configured to reflux a portion of the pesticide solution output by the liquid pump and drive the impeller installed therein to rotate to stir the pesticide solution.

[0052] Understandably, through modular and partitioned design, a complete spraying operation chain for integrated planting is constructed, sequentially completing the device's mobile support, corn-specific spraying, soybean-specific spraying, spraying direction adjustment, and liquid recirculation and mixing. Specifically, the mobile support unit first provides a stable support foundation for the entire device, while also possessing flexible movement and height adjustment capabilities. On the one hand, it can adapt to complex field terrain, ensuring the stability of the device during operation and preventing spraying deviation due to ground bumps; on the other hand, it can adjust the operating height according to the plant height differences at different growth stages of corn and soybeans, providing positional assurance for precise spraying. Subsequently, the corn spraying section and the soybean spraying section are set up separately, allowing for the storage and spraying of specialized liquids for the two crops based on their respective pest and disease types and plant structures. This avoids reduced efficacy or crop damage caused by mixing liquids, ensuring targeted spraying from the source. Entering the rotation adjustment stage, multi-dimensional directional adjustments allow the nozzle to precisely target the crop canopy. For tall corn plants, the spray boom is adjusted to a higher position to cover the top of the canopy; for short soybean plants, the spray boom is adjusted closer to the ground to cover the plant clusters, improving the effective adhesion of the pesticide to the leaves and reducing pesticide drift and waste. Finally, the return section recirculates a portion of the pesticide solution. This avoids uneven atomization caused by excessive pump output pressure and, more importantly, the returning solution impacts the rotating impeller, continuously stirring the pesticide in the tank to prevent sedimentation and stratification, ensuring uniform spray concentration and avoiding unstable efficacy or nozzle clogging due to concentration fluctuations. The entire process achieves coordinated operation of movement, application, direction adjustment, and pesticide stabilization, fully adapting to the needs of mixed cropping scenarios.

[0053] Specifically, the mobile support unit includes: a traveling wheel 110 configured as a moving device; a lifting support frame 120 connected to the traveling wheel 110, configured as an adjustment device height; an installation platform 130 mounted on the lifting support frame 120, configured as a support for the application unit; and a moving handle 140 located on one side of the installation platform 130, configured as an operating push device.

[0054] Understandably, by connecting the walking wheels 110 to the lifting support frame 120, the device can move flexibly in the field and adjust its operating height to adapt to different terrains and crop heights. Simultaneously, the mounting platform 130, set on the lifting support frame 120, provides a stable mounting carrier for core components such as the corn spraying section and soybean spraying section, preventing spraying deviations caused by component swaying during spraying. The movable handle 140 facilitates the operator's pushing or steering of the device, improving operational convenience. Through the coordinated operation of all components of the mobile support unit, a movable, adjustable, and supportive foundation is provided for the entire spraying device, ensuring the stability and accuracy of subsequent spraying operations.

[0055] In a specific embodiment of this application, the above steps are implemented as follows: The walking wheel 110, as the core moving component of the mobile bearing unit, can be a rubber inflatable wheel with a diameter of 30cm to 50cm. The rubber material has good wear resistance and shock absorption, adapting to complex road surfaces such as mud and gravel in the field, preventing tire slippage or device bumping. The compressibility of the inflatable wheel can further buffer the vibration caused by uneven ground, ensuring a smooth spraying process. The lifting support frame 120 can use a hydraulic lifting rod or an electric lifting rod, with a lifting stroke designed to be 50cm to 150cm. When the corn plant height reaches 1.5m to 2.0m, the lifting rod is adjusted to raise the installation platform 130 to a height of 1.2m to 1.6m, so that the corn nozzle 240 is aligned with the upper middle part of the corn canopy. When the soybean plant height is 0.3m to 0.6m, the lifting rod is adjusted to lower the installation platform 130 to a height of 0.2m to 0.4m, so that the soybean nozzle 340 is close to the top of the soybean clump. The mounting platform 130 can be made of Q235 steel plate with a thickness of 5mm to 8mm and a rust-proof surface treatment. Its dimensions can be designed as 120cm × 80cm, which can stably support components such as the corn pesticide tank 210, soybean pesticide tank 310, and spray boom assembly, avoiding deformation caused by long-term load. The moving handle 140 can be made of stainless steel tube with a diameter of 3cm to 5cm, bent into a "U" shape and welded to one side of the mounting platform 130. The surface of the handle is covered with a non-slip rubber sleeve, which can effectively prevent slipping when the operator pushes it. At the same time, the "U" shape makes it easy to operate and steer with both hands, which can meet the needs of field maneuvering operations.

[0056] The above scenarios are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0057] Specifically, the corn application unit includes: a corn pesticide tank 210 with a corn pesticide inlet 250, configured to store corn pesticide solution; a corn pesticide pump 220 connected to the corn pesticide tank 210, configured to pump the pesticide solution; a corn infusion pipe 260 connected to the corn pesticide pump 220, configured to deliver the pesticide solution; a corn spray bar assembly 230 connected to the corn pesticide pump 220, configured to deliver the pesticide solution; and a corn nozzle 240 located at the output end of the corn spray bar assembly 230, configured to atomize and spray the pesticide solution; wherein, the input end of the corn infusion pipe 260 is equipped with a corn pesticide anti-clogging filter cap 270, configured to filter solid impurities in the pesticide solution.

[0058] Specifically, the soybean application unit includes: a soybean pesticide tank 310 with a soybean pesticide inlet 350, configured to store soybean pesticide solution; a soybean pesticide pump 320 connected to the soybean pesticide tank 310, configured to pump the pesticide solution; a soybean spray bar assembly 330 connected to the soybean pesticide pump 320, configured to deliver the pesticide solution; and a soybean nozzle 340 located at the output end of the soybean spray bar assembly 330, configured to atomize and spray the pesticide solution.

[0059] Understandably, the corn spraying section and the soybean spraying section adopt a symmetrical and independent modular design, both achieving specialized spraying through processes of pesticide storage, pumping, conveying, filtering, and atomization. For the corn spraying section, the corn pesticide tank 210 can store specialized pesticide solutions for diseases and pests such as corn leaf blight and corn borer; the corn pesticide pump 220 provides stable pumping pressure to ensure smooth delivery of the pesticide solution within the corn infusion pipe 260; the corn pesticide anti-clogging filter cap 270 can filter undissolved pesticide powder particles or impurities in the pesticide solution to prevent clogging of the corn spray bar assembly 230 or the corn nozzle 240; the corn nozzle 240 can adopt a fan-shaped atomizing nozzle according to the characteristics of the corn canopy, with the atomized particle size controlled between 100μm and 200μm to ensure the coverage area and adhesion effect of the pesticide solution. Similarly, the soybean spraying section features a dedicated pesticide solution tank 310 that stores pesticides specifically for soybean root rot and aphids. The soybean spray nozzle 340 can be a fine mist nozzle with a slightly smaller atomized particle size controlled between 80μm and 150μm, suitable for the coverage needs of dense soybean clumps. The two spraying sections operate independently and can be started simultaneously or separately, adapting to different combined cropping patterns such as intercropping and relay cropping of corn and soybeans, while avoiding cross-contamination of pesticide solutions, significantly improving spraying accuracy and safety.

[0060] In a specific embodiment of this application, the above steps are implemented as follows: Both the corn liquid tank 210 and the soybean liquid tank 310 can be food-grade polyethylene storage tanks with a capacity of 50L to 100L. A transparent liquid level observation window is provided on the side wall of the tank, allowing operators to easily monitor the remaining liquid level in real time. Both the corn liquid inlet 250 and the soybean liquid inlet 350 are equipped with threaded caps, with sealing rings inside the caps to prevent leakage during operation. The corn liquid pump 220 and the soybean liquid pump 320 can be diaphragm-type high-pressure pumps with a working pressure of 0.3MPa to 0.5MPa and a flow rate of 5L to 10L / min. The diaphragm design avoids direct contact between the liquid and metal parts, preventing corrosion of the pump body and extending its service life. The corn infusion pipe 260 can be made of aging-resistant PVC pipe with an inner diameter of 10mm to 12mm and a wall thickness of 2mm to 3mm, possessing good pressure resistance and flexibility, facilitating adjustment of the bending angle with the spray boom. The corn pesticide sprayer cap 270 uses a 300-400 mesh stainless steel filter screen. The filter screen edge is threaded to the infusion tube input end, facilitating regular disassembly and cleaning to prevent flow reduction due to filter clogging. The corn sprayer head 240 features a multi-nozzle design with a 30cm spacing, installed on a 100cm-120cm long corn spray bar assembly 230, with a coverage width adapted to corn row spacing. The soybean sprayer head 340 features a multi-nozzle design with a 20cm spacing, installed on a 80cm-100cm long soybean spray bar assembly 330, suitable for the plant spacing requirements of densely planted soybeans, ensuring that the spray volume per acre is uniformly controlled at 50L-80L, complying with pesticide use regulations.

[0061] The above scenarios are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0062] Specifically, the orientation adjustment unit includes: a horizontal rotation mechanism 410, which is connected to the corn spray boom assembly 230 and the soybean spray boom assembly 330 respectively, and the horizontal rotation mechanism 410 is configured to adjust the horizontal direction of the spray boom; and a pitch adjustment mechanism 420, which is connected to the corn spray boom assembly 230 and the soybean spray boom assembly 330 respectively, and the pitch adjustment mechanism 420 is configured to adjust the vertical direction of the spray boom.

[0063] Understandably, the orientation adjustment unit achieves omnidirectional adaptation of the spray boom direction through coordinated adjustment in both horizontal and vertical dimensions. The horizontal rotation mechanism 410 can drive the spray boom to rotate around the vertical axis, with a rotation angle range designed from 0° to 180°. To address the row spacing differences in intercropping corn and soybeans, the horizontal angle of the spray boom can be adjusted to ensure the nozzle accurately targets the corresponding crop row, avoiding waste or phytotoxicity caused by spraying pesticides onto adjacent crop rows. For example, when the corn row spacing is 60cm and the soybean row spacing is 40cm, adjusting the horizontal angle of the corn spray boom covers the corn row, and adjusting the horizontal angle of the soybean spray boom covers the soybean row, achieving precise "one row, one spray" positioning. The pitch adjustment mechanism 420 can drive the spray boom to rotate around a horizontal axis, with a rotation angle range of -30° to 60° (downward is negative, upward is positive). For corn canopies with a "narrower top and wider bottom" structure, the vertical angle of the corn spray boom can be adjusted to 15° to 30°, allowing the pesticide to be sprayed obliquely downwards to cover the middle and lower parts of the canopy. For soybean canopies with a "flat" shape, the vertical angle of the soybean spray boom can be adjusted to -10° to 0°, allowing the pesticide to be sprayed obliquely upwards to cover the leaves inside the plant, improving the pesticide coverage within the canopy. This combination of horizontal and vertical adjustments completely solves the problem of spraying blind spots caused by differences in plant types between the two crops in intercropping, significantly improving the uniformity of pesticide application.

[0064] In a specific embodiment of this application, the above steps are implemented in the following ways: Figure 2 As shown, the horizontal rotation mechanism 410 can adopt a turntable bearing structure. The inner ring of the turntable bearing is fixedly connected to the spray frame 600, and the outer ring is welded to the corn spray boom assembly 230 and the soybean spray boom assembly 330 respectively. Positioning bolts are set on the side of the outer ring. After rotating to the target angle, tightening the positioning bolts can fix the spray boom. The rotation damping of the turntable bearing can be controlled by adjusting the tightness of the bolts to avoid angle deviation caused by vibration during operation. The horizontal rotation accuracy can be controlled within ±1° to ensure alignment with the crop row. The pitch adjustment mechanism 420 can adopt a combination structure of hinge and hydraulic push rod. The hinge is set at the connection between the spray boom and the horizontal rotation mechanism 410. One end of the hydraulic push rod is connected to the middle of the spray boom, and the other end is connected to the spray frame 600. The extension and retraction of the hydraulic push rod drives the spray boom to rotate around the hinge. The extension and retraction of the hydraulic push rod can be adjusted by the button on the control cabinet 700. The extension and retraction speed is 0.5cm to 1cm / s to ensure smooth angle adjustment. The vertical rotation accuracy can be controlled within ±0.5° to adapt to the spraying needs of different crop canopies. For example, when corn plants are 1.2m tall during the jointing stage, rotate the corn sprayer horizontally to aim at the corn row and vertically to 20° to cover the lower and middle parts of the canopy with the pesticide. When soybean plants are 0.4m tall during the flowering stage, rotate the soybean sprayer horizontally to aim at the soybean row and vertically to -5° to cover the leaves inside the plant with the pesticide, effectively controlling soybean aphids.

[0065] The above scenarios are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0066] Specifically, the reflux section includes: a reflux branch pipe 510, one end of which is connected to the outlet end of the corresponding liquid pump, and the other end of which extends to the bottom of the corresponding liquid tank; and a rotating impeller 520, which is located at the bottom of the liquid tank and connected to the reflux branch pipe 510. The rotating impeller 520 is configured to rotate and stir the liquid when impacted by the refluxed liquid.

[0067] Understandably, the reflux section, through the coordinated design of branch pipe reflux and impeller agitation, simultaneously achieves the functions of drug liquid pressure regulation and anti-sedimentation. One end of the reflux branch pipe 510 is connected to the outlet of the liquid pump, which can divert 10% to 20% of the drug liquid output from the liquid pump, avoiding excessively high nozzle pressure caused by the liquid pump being fully loaded. When the nozzle atomization pressure exceeds 0.5MPa, part of the drug liquid is returned through the reflux branch pipe 510, which can stabilize the nozzle pressure in the optimal atomization range of 0.3MPa to 0.5MPa, ensuring uniform drug liquid atomization and avoiding drug liquid drift caused by excessive pressure or poor atomization caused by insufficient pressure. The other end of the return branch pipe 510 extends to the bottom of the pesticide tank. The returned pesticide directly impacts the rotating impeller 520 at the bottom of the tank. Driven by the impact force, the impeller rotates, creating a vortex in the pesticide solution and continuously agitating it. For pesticide formulations such as suspensions and emulsions that are prone to sedimentation, this effectively prevents pesticide particles from settling to the bottom of the tank, ensuring a consistent pesticide concentration from top to bottom. This avoids the problems of poor efficacy due to excessively low concentrations in the early stages of spraying and crop damage due to excessively high concentrations in the later stages. Furthermore, the rotating impeller 520 requires no additional power source, relying on the kinetic energy of the returned pesticide solution, which saves energy, simplifies the device structure, and improves operational reliability.

[0068] In a specific embodiment of this application, the above steps are implemented in the following ways: Figure 3As shown, the return branch pipe 510 can be made of chemically resistant polyethylene pipe with an inner diameter of 6mm to 8mm. A flow regulating valve is installed on the pipe to adjust the return flow rate in real time according to the liquid pump pressure. When the outlet pressure of the corn liquid pump 220 reaches 0.6MPa, the flow regulating valve is opened to allow 15% of the liquid to return, reducing the nozzle pressure to 0.4MPa. When the pressure drops to 0.3MPa, part of the regulating valve is closed to reduce the return flow rate and ensure pressure stability. A 45° bevel can be installed at the end of the return branch pipe 510 extending to the bottom of the liquid tank, facing the blades of the rotating impeller 520, allowing the returned liquid to precisely impact the blades and improve impeller rotation efficiency. The rotating impeller 520 can use 3 to 4 plastic blades with a diameter of 8cm to 10cm and a thickness of 2mm to 3mm. The blades are welded to the central shaft, which is connected to the bottom of the liquid tank via bearings. This results in low rotational resistance. When the return liquid flow rate reaches 1L to 2L / min, the impeller can be driven to rotate at a speed of 30r to 50r / min. For example, when using 25% pyraclostrobin suspension to control corn leaf blight, the agent tends to settle in the tank. By diverting 15% of the solution through the return branch pipe 510 and driving the rotating impeller 520 to rotate, the concentration deviation of the solution in the tank can be controlled within ±5%, which is far lower than the industry's allowable ±10% concentration deviation standard, ensuring stable spraying concentration throughout the entire cycle.

[0069] The above scenarios are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0070] Specifically, the soybean-corn combined spraying device of this application also includes a spraying frame 600 and a control cabinet 700: the spraying frame 600 is mounted on the installation platform 130 of the mobile support unit, and the spraying frame 600 is configured to support the corn spraying boom assembly 230 and the soybean spraying boom assembly 330; the control cabinet 700 is located on one side of the spraying frame 600, and the control cabinet 700 is configured to independently control the spraying parameters of the corn spraying unit and the soybean spraying unit, and automatically adjust the lifting height of the mobile support unit according to the crop height, and can automatically identify and switch to the corresponding spraying mode according to the crop type.

[0071] Understandably, the spray frame 600, as the mounting carrier for the spray boom assembly, can be made of stainless steel square tubing welded into a "door" shaped structure. The height can be designed to be 150cm to 200cm according to the maximum stroke of the lifting support frame 120, and the width can be adapted to the length of the spray boom assembly, providing stable support for the corn spray boom assembly 230 and the soybean spray boom assembly 330, and preventing the spray boom from shaking during the spraying process. The control cabinet 700 enhances operational efficiency through intelligent control. Its built-in control chip connects to the motor controllers of the corn sap pump 220 and the soybean sap pump 320, enabling independent adjustment of spray volume and pressure. Simultaneously, it connects to the hydraulic or electric control system of the lifting support frame 120, automatically adjusting the lifting height based on crop height parameters input by the operator, with an adjustment accuracy of ±2cm. Furthermore, the control cabinet 700 panel features three modes: "Corn Mode," "Soybean Mode," and "Combined Mode." Switching to "Corn Mode" automatically starts the corn sap pump 220 and adjusts the corn spray boom angle to a preset value. Switching to "Soybean Mode" automatically starts the soybean sap pump 320 and adjusts the soybean spray boom angle to a preset value. Switching to "Combined Mode" simultaneously starts both pumps and adjusts the corresponding spray boom angles, adapting to the synchronous spraying needs of intercropping scenarios. Intelligent control not only reduces the skill requirements of operators but also minimizes the time cost of manual adjustments, significantly improving operational efficiency.

[0072] In a specific embodiment of this application, the above steps are implemented as follows: The spray frame 600 is welded from 20mm×20mm stainless steel square tubing, with its bottom fixed to the mounting platform 130 by bolts. A spray boom fixing clip is installed at the top, allowing the corn spray boom assembly 230 and the soybean spray boom assembly 330 to be fixed at different heights. Rubber pads are installed inside the fixing clips to prevent wear caused by direct friction between the spray boom and the square tubing. The control cabinet 700 uses a waterproof plastic shell with an IP65 protection rating, suitable for rain and dew conditions in the field. The panel features an LCD screen and physical buttons. The screen displays real-time parameters such as spray pressure, flow rate, and lifting height. The buttons include a mode switch button, a parameter adjustment button, and an emergency stop button. The built-in lithium battery provides 8 to 10 hours of continuous operation, meeting the needs of daily work. For example, when operating in fields where corn and soybeans are intercropped, the operator inputs the corn plant height as 1.5m and the soybean plant height as 0.4m into the control cabinet 700, switches to "composite mode," and the control cabinet automatically adjusts the lifting support frame 120 to raise the installation platform 130 to a height of 1.0m, starts the corn liquid pump 220r to 2000r / min (corresponding to a flow rate of 7L / min) and the soybean liquid pump 320 to 1500r / min (corresponding to a flow rate of 5L / min), and simultaneously controls the horizontal rotation mechanism 410 to align the corn spray boom with the corn row and the soybean spray boom with the soybean row, and the pitch adjustment mechanism 420 to adjust the angle of the corn spray boom to 25° and the angle of the soybean spray boom to -8°, achieving synchronous and precise spraying, which improves the work efficiency by more than 40% compared to manual adjustment.

[0073] The above scenarios are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0074] like Figure 4 As shown in the embodiments above, a soybean-corn combined spraying device is first moved to the target field during operation. The operator pushes the device using the handle 140, and the wheels 110 adapt to the field terrain for smooth movement. Depending on the field planting mode—corn monoculture, soybean monoculture, or corn-soybean combined planting—the corresponding spraying mode is selected on the control cabinet 700, and the current crop growth height parameters are input. The control cabinet 700 automatically adjusts the lifting support frame 120 of the moving bearing unit according to the parameters, driving the installation platform 130 and the spraying components above it to a suitable height. For corn monoculture, it is raised to 1.2m to 1.6m; for soybean monoculture, it is lowered to 0.2m to 0.4m; and for combined planting, it is adjusted to a middle height that accommodates both. Subsequently, the liquid pumps of the corresponding application sections are activated: When the corn application section is activated, the special liquid in the corn liquid tank 210 is filtered through the corn infusion pipe 260 and the corn liquid anti-clogging filter cap 270 to remove impurities, and is then pumped by the corn liquid pump 220 to the corn spray boom assembly 230, and finally atomized and sprayed out through the corn nozzle 240; when the soybean application section is activated, the special liquid in the soybean liquid tank 310 is pumped by the soybean liquid pump 320 to the soybean spray boom assembly 330, and finally atomized and sprayed out through the soybean nozzle 340. During the spraying process, the orientation adjustment section works in real time: the horizontal rotation mechanism 410 adjusts the horizontal angle of the spray boom to ensure that the nozzle is aligned with the crop row; the pitch adjustment mechanism 420 adjusts the vertical angle of the spray boom to ensure that the liquid covers the key parts of the crop canopy. At the same time, the return section continues to operate: the return branch pipe 510 diverts part of the liquid back to the water liquid tank, adjusts the nozzle pressure to the optimal range, and the return liquid impacts the rotating impeller 520 to rotate, stirring the liquid to prevent sedimentation. Throughout the process, the control cabinet 700 monitors parameters such as spraying pressure and flow rate in real time, and operators can adjust them at any time via the panel to ensure accurate, efficient, and stable spraying operations.

[0075] The soybean-corn combined spraying device described in the above embodiments, by incorporating a movable support unit, enables the device to adapt to terrain and adjust its height, avoiding spraying deviations caused by differences in field environment and crop height, thereby improving the device's adaptability to various operating scenarios. Secondly, the separate corn and soybean spraying sections allow for separate storage and application of specialized pesticide solutions, avoiding pesticide mixing issues and providing targeted application plans for different crops, ensuring both spraying effectiveness and crop safety. Furthermore, the orientation adjustment unit, through bidirectional horizontal and vertical adjustment, allows the nozzle to precisely adapt to different crop canopy structures, significantly improving pesticide adhesion and coverage, and reducing pesticide waste. The reflux unit, through the synergy of pesticide reflux and impeller agitation, stabilizes spraying pressure and prevents pesticide sedimentation, ensuring uniform spray concentration and avoiding nozzle clogging and fluctuations in efficacy. Finally, the intelligent control of the control cabinet 700 enables automatic adjustment of spraying parameters and mode switching, reducing the difficulty of manual operation and improving operational efficiency. It can be seen that this application has achieved a full-process optimized design from mobile support, dedicated spraying, direction adjustment, pesticide solution stabilization to intelligent control. It not only significantly improves the spraying effect and operation quality in the intercropping mode, but also reduces operating costs through pesticide solution saving and efficiency improvement, making spraying operations more precise, efficient, economical and environmentally friendly.

[0076] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A combined soybean and corn spraying device, characterized in that, include: The mobile bearing unit is configured as a support and movement device; A corn spraying unit is provided on the mobile support unit, and the corn spraying unit is configured to spray pesticide solution onto corn crops; A soybean spraying unit is disposed on the mobile carrier unit, and the soybean spraying unit is configured to spray pesticide solution onto soybean crops; The orientation adjustment unit is connected to the corn spraying unit and the soybean spraying unit respectively, and the orientation adjustment unit is configured to adjust the spraying direction; The reflux section is connected to the corn application section and the soybean application section respectively, and the reflux section is configured to reflux a portion of the liquid solution output by the liquid pump.

2. The soybean-corn combined spraying device as described in claim 1, characterized in that, The mobile carrier unit includes: The wheels are configured as a mobility device; A lifting support frame is connected to the traveling wheels, and the lifting support frame is configured to adjust the height of the device; An installation platform is mounted on the lifting support frame, and the installation platform is configured to support the pesticide application unit. A movable handle is provided on one side of the mounting platform, and the movable handle is configured to operate the pushing device.

3. The soybean-corn combined spraying device as described in claim 2, characterized in that, The corn application unit includes: A corn pesticide tank is provided with a corn pesticide inlet, and the corn pesticide tank is configured to store pesticide for corn. A corn liquid pump is connected to the corn liquid tank and is configured to pump the liquid. A corn infusion tube is connected to the corn liquid pump, and the corn infusion tube is configured to deliver the medicine solution; A corn spray bar assembly is connected to the corn liquid pump, and the corn spray bar assembly is configured to deliver liquid medicine. A corn nozzle is disposed at the output end of the corn spray bar assembly, and the corn nozzle is configured to atomize and spray the liquid medicine. The corn infusion tube is equipped with a corn medicine anti-clogging filter cap at its input end, which is configured to filter solid impurities in the medicine solution.

4. The soybean-corn combined spraying device as described in claim 3, characterized in that, The soybean application unit includes: A soybean liquid treatment tank is provided with a soybean liquid treatment inlet, and the soybean liquid treatment tank is configured to store soybean liquid treatment. A soybean liquid pump is connected to the soybean liquid tank and is configured to pump the liquid. A soybean infusion tube is connected to the soybean liquid pump, and the soybean infusion tube is configured to deliver the liquid medicine; A soybean spraying boom assembly is connected to the soybean liquid pump, and the soybean spraying boom assembly is configured to deliver liquid medicine. A soybean nozzle is disposed at the output end of the soybean spray bar assembly, and the soybean nozzle is configured to atomize and spray the liquid medicine. The soybean infusion tube is equipped with a soybean liquid anti-clogging filter cap at its input end, which is configured to filter solid impurities in the liquid.

5. The soybean-corn combined spraying device as described in claim 4, characterized in that, The orientation adjustment unit includes: A horizontal rotation mechanism is connected to the corn spray bar assembly and the soybean spray bar assembly respectively, and the horizontal rotation mechanism is configured to adjust the horizontal direction of the spray bar; The pitch adjustment mechanism is connected to the corn spray boom assembly and the soybean spray boom assembly respectively, and the pitch adjustment mechanism is configured to adjust the vertical direction of the spray boom.

6. The soybean-corn combined spraying device as described in claim 5, characterized in that, The reflux section includes: The return branch pipe is connected at one end to the outlet of the corresponding liquid pump, and at the other end extends to the bottom of the corresponding liquid tank. A rotating impeller is provided, with the bottom of the liquid tank connected to the return branch pipe. The rotating impeller is configured to rotate and stir the liquid when impacted by the return liquid.

7. The soybean-corn combined spraying device as described in claim 6, characterized in that, It also includes a sprayer frame disposed on the movable support unit, the sprayer frame being configured to support the corn sprayer assembly and the soybean sprayer assembly.

8. The soybean-corn combined spraying device as described in claim 7, characterized in that, It also includes a control cabinet, which is located on one side of the spraying rack. The control cabinet is configured to independently control the spraying parameters of the corn spraying unit and the soybean spraying unit, and automatically adjust the lifting height of the mobile support unit according to the crop height.

9. A soybean and corn combined spraying device as described in claim 8, characterized in that, The control cabinet is also configured to automatically identify and switch to the corresponding spraying mode based on the crop type.

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