An agricultural self-propelled boom sprayer

Abstract

The application relates to the technical field of agricultural plant protection mechanical equipment, and discloses a self-propelled spray boom sprayer for agriculture, which comprises an operation table. The self-propelled spray boom sprayer for agriculture is provided with a stable liquid medicine filtering structure formed by a blocking prevention mechanism. When a pump body extracts liquid medicine in an outer box, the liquid medicine first flows through a filter plate in a filter cylinder. Large-volume impurities such as pesticide agglomerates and fertilizer residues mixed in the liquid medicine are efficiently intercepted on the left side of the filter plate, so that the impurities are completely prevented from entering the pump body, an output pipe and a spraying nozzle. A linkage mechanism and an elastic reset assembly of the blocking prevention mechanism are matched to form a filter screen cleaning structure which does not need additional power. When a stirring shaft rotates, a straight rod at the bottom and a wedge-shaped block are synchronously driven to make clockwise circular motion. The inclined surface of the wedge-shaped block periodically extrudes a connecting rod, drives a sliding rod and a push rod to push into the filter hole of the filter plate, and the push rod is accurately embedded in the filter hole to directly push out stubborn impurities embedded in the hole.

Description

Technical Field

[0001] This invention relates to the field of agricultural plant protection machinery and equipment technology, specifically to a self-propelled boom sprayer for agricultural use. Background Technology

[0002] Self-propelled boom sprayers are core equipment for modern agricultural plant protection operations. With their advantages of autonomous movement, wide-area spraying, and high operating efficiency, they are widely used in the prevention and control of pests and diseases and the application of foliar fertilizers to field crops.

[0003] A search revealed Chinese Patent Publication No. CN217249859U, which discloses a self-propelled boom spraying device, including a base plate. This invention solves the problems of existing self-propelled boom spraying devices, such as the inconvenience of spraying according to the different heights of crops, and the inability to quickly mix water and pesticides when the pesticide is dissolved in water, reducing the efficiency of pesticide dissolution and making them unsuitable for use. The existing technical solutions have the following drawbacks: Firstly, the device lacks a dedicated fine filtration structure for the pesticide solution. The pesticide residue, undissolved pesticide particles, and water impurities generated after the pesticide and water are mixed cannot be effectively intercepted. These impurities are directly transported to the nozzle with the pesticide solution. During long-term continuous operation, the continuous accumulation of impurities easily causes nozzle blockage, leading to problems such as nozzle atomization failure, partial spray interruption, and uneven pesticide distribution. This not only leads to missed spraying and uneven pesticide efficacy in farmland, but also requires frequent shutdowns for manual disassembly and cleaning of the nozzles, severely disrupting the plant protection operation process and greatly reducing the continuity of field operations and overall efficiency. On the other hand, the lack of a dedicated cleaning and anti-adhesion structure on the outside of the filter structure means that the negative pressure suction generated by the pipeline during pesticide delivery will cause a large number of impurities to adhere strongly to the filter screen surface, resulting in filter screen pore blockage and reduced flow area. After the filter screen is blocked, it directly leads to increased resistance to pesticide delivery and reduced delivery flow, which not only affects the stability of the spray pressure of the whole machine, causing quality problems such as insufficient spraying amount and uneven droplets, but also continuously exacerbates the risk of nozzle blockage, forming a vicious cycle. The equipment has poor operating stability and a high failure rate, which greatly increases the workload of later maintenance. Therefore, a self-propelled boom sprayer for agriculture is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a self-propelled boom sprayer for agriculture, which has the advantages of having a liquid filtration structure and a matching filter cleaning structure, thus solving the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the aforementioned purpose of having a liquid filtration structure and a matching filter cleaning structure, the present invention provides the following technical solution: an agricultural self-propelled boom sprayer, comprising an operating platform, a shock-absorbing seat fixedly installed at the bottom of the operating platform, a movable wheel fixedly installed at the bottom of the shock-absorbing seat, an outer casing fixedly installed at the top of the operating platform, a stirring assembly extending to its inner side provided at the top of the outer casing, a spraying assembly provided on the top right side of the operating platform, an infusion assembly connected to the spraying assembly provided at the top of the operating platform, an inlet pipe extending to its top fixedly installed on the inner top wall of the outer casing, a linkage mechanism provided at the bottom of the stirring assembly, and an anti-clogging mechanism provided at one end of the infusion assembly extending to the inner side of the outer casing;

[0008] The stirring assembly includes a motor frame, which is fixedly installed on the top of the outer casing. A motor is fixedly installed on the inner side of the motor frame. A stirring shaft extending to the inner side of the outer casing is fixedly installed at the output shaft of the motor. Stirring blades are fixedly installed on the outer side of the stirring shaft.

[0009] Preferably, the linkage mechanism includes a right-angle rod, with a right-angle rod fixedly installed at one bottom end of the stirring shaft and a wedge block fixedly installed at the other end of the right-angle rod.

[0010] Preferably, the spray assembly includes an outer box, which is fixedly installed on the top right side of the operating table. A servo motor is fixedly installed on the inner bottom wall of the outer box. A threaded rod that is rotatably connected to the inner top wall of the outer box is fixedly installed at the output shaft of the servo motor. A threaded block is threadedly connected to the outer side of the threaded rod. A lifting frame that penetrates the outer box and extends to its right side is fixedly installed on the right side of the threaded block. A support base is fixedly installed on the top of the lifting frame. A spray pipe that extends to its rear side is movably installed on the front side of the support base. A spray nozzle that extends to its right side is movably installed on the right side of the inner wall of the spray pipe.

[0011] Preferably, the infusion assembly includes a pump body, the pump body is fixedly installed on the top of the operating table between the outer casing and the outer box, the input end of the pump body is fixedly installed with an input pipe extending to the inside of the outer casing, the output end of the pump body is fixedly installed with an output pipe, the output pipe extends to the inside of the support base and is movably connected to the nozzle.

[0012] Preferably, the anti-clogging mechanism includes a filter cartridge. The filter cartridge is movably installed on the outer side of the inner end of the input pipe. A filter plate is movably installed on the left side of the inner wall of the filter cartridge. A support cylinder is fixedly installed on the inner side of the filter plate. A slide rod extending to the inner side of the filter cartridge is slidably installed on the left side of the support cylinder. A perforated plate is fixedly installed on the right side of the slide rod. A push rod located on the right side of the filter plate is fixedly installed on the left side of the perforated plate. A connecting rod is fixedly installed on the left side of the slide rod. A rectangular box is fixedly installed on the front side of the filter cartridge. A crossbar extending to the left side of the rectangular box and fixedly connected to the connecting rod is slidably installed on the inner side of the rectangular box. A rectangular plate slidably connected to the inner side of the rectangular box is fixedly installed on the right side of the crossbar. A return spring fixedly connected to the left side of the inner wall of the rectangular box and sleeved on the outside of the crossbar is fixedly installed on the left side of the rectangular plate. The connecting rod is located directly to the right of the wedge block.

[0013] Preferably, the filter plate has filter holes on its inner side, the push rod is located to the right of the filter holes, and the diameter of the push rod is smaller than the diameter of the filter holes.

[0014] Preferably, the front end of the left side of the wedge block is designed to be inclined, and the front side of the wedge block is designed to have an arc-shaped chamfer.

[0015] Preferably, the number of stirring blades is three and they are evenly distributed from top to bottom, and the inner top wall of the outer casing is provided with a circular hole that matches the stirring shaft.

[0016] Preferably, the inner wall of the outer box has strip-shaped holes on both the front and rear sides that are adapted to the lifting frame, and the inner side of the support base has mounting holes that are adapted to the nozzle.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides a self-propelled boom sprayer for agriculture, which has the following beneficial effects:

[0019] 1. This self-propelled boom sprayer for agriculture features a stable liquid filtration structure built through an anti-clogging mechanism. When the pump draws liquid from the outer casing, the liquid first flows through the filter plate inside the filter cartridge. Large impurities such as pesticide clumps and fertilizer residue mixed in the liquid are efficiently intercepted on the left side of the filter plate, completely preventing impurities from entering the pump, output pipe, and spray nozzle with the liquid. This eliminates the problems of pipe blockage and uneven liquid output from the nozzle from the source, ensuring smooth liquid delivery throughout the spraying operation and preventing localized interruptions in spraying.

[0020] 2. This self-propelled boom sprayer for agriculture, through the cooperation of a linkage mechanism and an anti-clogging mechanism with an elastic reset component, constructs a matching filter cleaning structure that requires no additional power. When the stirring shaft rotates, it drives the right-angle rod and wedge block at the bottom to make clockwise circular motions in sync. The inclined surface of the wedge block periodically squeezes the connecting rod, driving the sliding rod and push rod to push into the filter holes of the filter plate. The push rod precisely embeds into the filter holes and directly pushes out the stubborn impurities embedded in the holes. After each pushing action is completed, the reset spring drives all components to automatically reset. The entire process does not require manual disassembly and cleaning of the filter plate, which greatly extends the continuous service life of the filter and reduces the maintenance difficulty during field operations. Attached Figure Description

[0021] Figure 1 This is a three-dimensional view of the structure of the present invention;

[0022] Figure 2 This is a right-side perspective view of the structure of the present invention;

[0023] Figure 3 This is a right-side exploded perspective view of the spray assembly of the present invention.

[0024] Figure 4 This is a cross-sectional perspective view of the stirring assembly of the present invention;

[0025] Figure 5 This is a sectional perspective view of the linkage mechanism of the present invention;

[0026] Figure 6 This is a sectional perspective view of the anti-blocking mechanism of the present invention;

[0027] Figure 7 This is a partial sectional perspective view of the anti-blocking mechanism of the present invention;

[0028] Figure 8 This is a partial sectional perspective view of the internal structure of the rectangular box of the present invention.

[0029] In the diagram: 1. Control panel; 2. Shock absorber seat; 3. Casters; 4. Outer casing; 5. Stirring assembly; 51. Motor frame; 52. Motor; 53. Stirring shaft; 54. Stirring blades; 6. Linkage mechanism; 61. Right-angle rod; 62. Wedge block; 7. Spray assembly; 71. Outer box; 72. Servo motor; 73. Threaded rod; 74. Threaded block; 75. Lifting frame; 76. Support seat; 77. Spray pipe; 78. Spray nozzle; 8. Infusion assembly; 81. Pump body; 82. Input pipe; 83. Output pipe; 9. Anti-clogging mechanism; 901. Filter cartridge; 902. Filter plate; 903. Support cylinder; 904. Slide rod; 905. Hollow plate; 906. Push rod; 907. Connecting rod; 908. Rectangular box; 909. Crossbar; 910. Rectangular plate; 911. Return spring; 10. Inlet pipe. Detailed Implementation

[0030] 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.

[0031] Please see Figure 1-8 The present invention provides a technical solution: an agricultural self-propelled boom sprayer, including an operating platform 1, a shock-absorbing seat 2 fixedly installed at the bottom of the operating platform 1, a moving wheel 3 fixedly installed at the bottom of the shock-absorbing seat 2, an outer box 4 fixedly installed at the top of the operating platform 1, a stirring assembly 5 extending to its inner side provided at the top of the outer box 4, a spraying assembly 7 provided on the top right side of the operating platform 1, a liquid delivery assembly 8 connected to the spraying assembly 7 provided at the top of the operating platform 1, a liquid inlet pipe 10 extending to its top fixedly installed on the inner top wall of the outer box 4, a linkage mechanism 6 provided at the bottom of the stirring assembly 5, and one end of the liquid delivery assembly 8 extending to the inner side of the outer box 4 and provided with an anti-clogging mechanism 9.

[0032] The control panel 1 serves as the core operating platform for the entire machine, providing a stable installation and positioning foundation for all functional components. Operators can complete all field operations such as machine movement control and spray parameter adjustment on this platform, ensuring convenient operation of the entire machine. The shock-absorbing seat 2 is fixed to the bottom of the control panel 1, which can buffer the severe vibration transmitted from the uneven ridge surface in the field, preventing the vibration from being directly transmitted to the outer box 4 and precision transmission components, reducing the problems of component loosening and pesticide spillage, and greatly improving the stability of the entire machine in the field. The moving wheels 3 are installed at the bottom of the shock-absorbing seat 2, which are suitable for the soft and muddy ridge road conditions in the farmland, supporting the entire machine to move flexibly between different plots in the field, and can complete cross-regional plant protection operations autonomously without additional traction equipment. The outer box 4 serves as the storage and mixing chamber for the pesticide solution, providing installation space for the mixing component 5, linkage mechanism 6, and anti-clogging mechanism 9, and receiving the pesticide and water mixture injected from the liquid inlet pipe 10, providing a homogeneous and stable pesticide solution reserve for subsequent spraying operations.

[0033] The stirring assembly 5 includes a motor frame 51. The motor frame 51 is fixedly installed on the top of the outer casing 4. A motor 52 is fixedly installed on the inner side of the motor frame 51. A stirring shaft 53 extending to the inner side of the outer casing 4 is fixedly installed at the output shaft of the motor 52. A stirring blade 54 is fixedly installed on the outer side of the stirring shaft 53.

[0034] There are three stirring blades 54, which are evenly distributed from top to bottom. The inner top wall of the outer box 4 has a round hole that matches the stirring shaft 53.

[0035] The stirring assembly 5 serves as a homogenizing unit for the pesticide solution. Through multiple layers of stirring blades 54, it continuously agitates the solution within the tank, preventing the active pesticide components from settling and separating, ensuring a uniform concentration throughout the process, and guaranteeing consistent dosage to crops in different areas. The motor frame 51 is fixed to the top of the outer casing 4, providing rigid support and positioning for the motor 52, offsetting vibrations generated during motor operation, preventing displacement and wobbling, and ensuring the coaxiality of the stirring shaft 53. The motor 52 provides stable rotational power for stirring the pesticide solution, driving the stirring shaft 53 and stirring blades... The blade 54 rotates continuously at a constant speed, driving the liquid medicine in the box to form a circulating convection, achieving full mixing and homogenization of the liquid medicine. The stirring shaft 53 receives the rotational power of the motor 52 and transmits the power synchronously to the three-layer stirring blades 54 on the outside. At the same time, the shaft section extending from the bottom can directly drive the linkage mechanism 6 to operate, realizing that the power for stirring and unblocking actions is from the same source. The stirring blades 54 rotate synchronously with the stirring shaft 53. The three layers of blades distributed at equal intervals can stir the liquid medicine in different height areas inside the outer box 4, completely breaking the layered sedimentation state of the liquid medicine, so that the concentration of the liquid medicine in the whole box remains uniform.

[0036] The linkage mechanism 6 includes a right-angle rod 61. The right-angle rod 61 is fixedly installed at one end of the bottom of the stirring shaft 53, and a wedge block 62 is fixedly installed at the other end of the right-angle rod 61.

[0037] The front end of the left side of the wedge block 62 is designed with an incline, and the front side of the wedge block 62 has an arc-shaped chamfer design.

[0038] The linkage mechanism 6 relies on the existing rotational power of the stirring shaft 53, without the need for additional independent drive components, to periodically drive the anti-clogging mechanism 9 to complete the filter cleaning action, realizing the linkage and synchronous operation of stirring and cleaning, simplifying the overall power structure. The right-angle rod 61 is fixed at the bottom of the stirring shaft 53 and moves in a circular motion synchronously with the stirring shaft 53, transmitting the rotational power of the stirring shaft 53 to the wedge block 62 at the end, allowing the wedge block 62 to continuously circulate along a fixed circular trajectory. The wedge block 62 rotates synchronously with the right-angle rod 61, and its inclined surface periodically squeezes the connecting rod 907, converting the circular motion into the linear reciprocating motion of the connecting rod 907, providing a stable intermittent pushing power for the filter cleaning action.

[0039] The spray assembly 7 includes an outer box 71. The outer box 71 is fixedly installed on the top right side of the control panel 1. A servo motor 72 is fixedly installed on the inner bottom wall of the outer box 71. A threaded rod 73, which is rotatably connected to the inner top wall of the outer box 71, is fixedly installed at the output shaft of the servo motor 72. A threaded block 74 is threadedly connected to the outer side of the threaded rod 73. A lifting frame 75, which penetrates the outer box 71 and extends to its right side, is fixedly installed on the right side of the threaded block 74. A support base 76 is fixedly installed on the top of the lifting frame 75. A spray pipe 77, which extends to its rear side, is movably installed on the front side of the support base 76. A spray nozzle 78, which extends to its right side, is movably installed on the right side of the inner wall of the spray pipe 77.

[0040] The inner wall of the outer box 71 has strip-shaped holes on both the front and rear sides that are compatible with the lifting frame 75, and the inner side of the support base 76 has mounting holes that are compatible with the nozzle 77.

[0041] The spray assembly 7, as the atomization and spraying unit for pesticides, can independently adjust the overall height of the spray boom to adapt to crops of different heights, ensuring that the spray nozzle 78 is always at the optimal spraying height and preventing pesticide drift or crop damage. The outer box 71 is fixed to the top right side of the operating table 1, providing a closed protective space for the servo motor 72, threaded rod 73, and other lifting and transmission components, preventing pesticide droplets and dust from entering the transmission structure and causing rust and jamming. The servo motor 72 provides precise rotational power for adjusting the spray boom height, accurately controlling the forward and reverse rotation and the number of rotations of the threaded rod 73, achieving stepless fine-tuning of the spray boom height to adapt to the plant protection needs of crops at different growth stages. The two ends of the threaded rod 73 are rotatably mounted between the inner walls of the outer box 71, converting the rotational motion of the servo motor 72 into the vertical linear motion of the threaded block 74, providing stable threaded transmission support for the lifting and lowering adjustment of the spray boom. The threaded block 74 is threadedly connected to the threaded rod 73. On the outside, the screw rod 73 rotates and rises vertically in sync, driving the lifting frame 75 to complete the height displacement simultaneously, accurately transmitting the adjustment power for the lifting of the spray boom. The lifting frame 75 passes through the strip-shaped hole in the outer box 71, transmitting the lifting power of the screw block 74 to the support seat 76 at the top, driving the spray pipe 77 and the spray nozzle 78 to complete the overall height adjustment simultaneously. The support seat 76 is fixed to the top of the lifting frame 75, providing a movable installation and positioning carrier for the spray pipe 77, allowing the spray pipe 77 to be finely adjusted on the support seat 76 as needed to adapt to different spray width requirements. The spray pipe 77, as a lateral transport carrier for the liquid, receives the pressurized liquid introduced from the output pipe 83 and evenly distributes the liquid to each spray nozzle 78, ensuring that the inlet pressure of each nozzle remains consistent. The spray nozzle 78 is movably installed on the right side of the spray pipe 77, atomizing the pressurized liquid into uniform fine droplets at high speed, and spraying them evenly on the surface of the stems and leaves of crops to achieve precise pesticide application.

[0042] The infusion assembly 8 includes a pump body 81. The pump body 81 is fixedly installed on the top of the operating table 1 between the outer casing 4 and the outer box 71. An input pipe 82 extending to the inside of the outer casing 4 is fixedly installed at the input end of the pump body 81. An output pipe 83 is fixedly installed at the output end of the pump body 81. The output pipe 83 extends to the inside of the support base 76 and is movably connected to the nozzle 77.

[0043] The infusion assembly 8 serves as the power unit for pressurizing and delivering the liquid medicine. It pressurizes the filtered liquid medicine inside the outer casing 4 and stably delivers it to the spray assembly 7, providing sufficient working pressure for the atomization of the nozzle and ensuring that the droplet size is uniform and meets the standards. The pump body 81 provides suction and pressurization power for the liquid medicine delivery. It draws the filtered liquid medicine inside the outer casing 4 through the input pipe 82, pressurizes it, and pushes it into the spray pipe 77 through the output pipe 83, meeting the atomization pressure requirements of the spray nozzle 78. The input pipe 82 serves as the liquid medicine extraction pipeline at the input end of the pump body 81, extending to the inside of the outer casing 4 to provide an installation carrier for the filter cartridge 901, stably introducing the filtered liquid medicine into the pump body 81. The output pipe 83 serves as the pressurized liquid medicine delivery pipeline at the output end of the pump body 81, extending to the inside of the support base 76, accurately delivering the pressurized liquid medicine into the spray pipe 77, completing the delivery and docking of the liquid medicine to the spraying end.

[0044] The anti-clogging mechanism 9 includes a filter cartridge 901. The filter cartridge 901 is movably mounted on the outer side of the inner end of the input pipe 82 located inside the outer casing 4. A filter plate 902 is movably mounted on the left side of the inner wall of the filter cartridge 901. A support cylinder 903 is fixedly mounted on the inner side of the filter plate 902. A slide rod 904 extending to the inner side of the filter cartridge 901 is slidably mounted on the left side of the support cylinder 903. A perforated plate 905 is fixedly mounted on the right side of the slide rod 904. A push rod 906 located on the right side of the filter plate 902 is fixedly mounted on the left side of the perforated plate 905. The left side of the slide rod 904... A connecting rod 907 is fixedly installed at one end of the filter cartridge 901. A rectangular box 908 is fixedly installed at the front side of the filter cartridge 901. A crossbar 909 extending to the left side and fixedly connected to the connecting rod 907 is slidably installed on the inner side of the rectangular box 908. A rectangular plate 910 slidably connected to the inner side of the rectangular box 908 is fixedly installed at the right end of the crossbar 909. A return spring 911 fixedly connected to the left side of the inner wall of the rectangular box 908 and sleeved on the outside of the crossbar 909 is fixedly installed on the left side of the rectangular plate 910. The connecting rod 907 is located directly to the right of the wedge block 62.

[0045] The filter plate 902 has filter holes on its inner side, and the push rod 906 is located on the right side of the filter holes. The diameter of the push rod 906 is smaller than the diameter of the filter holes.

[0046] The anti-clogging mechanism 9, acting as a fine filtration and automatic unclogging unit for the pesticide solution, intercepts pesticide clumps and impurity particles mixed in the solution. Simultaneously, relying on a linkage mechanism, it automatically unclogs the filter holes, preventing pipe and nozzle blockages at the source and ensuring smooth spraying throughout the operation. The filter cartridge 901 is movably installed at the outer end of the inlet pipe 82, providing a sealed mounting cavity for all filtration and unclogging components such as the filter plate 902 and slide bar 904. This ensures that all pesticide solution must pass through the filter plate 902 before entering the inlet pipe 82. The filter plate 902 has evenly distributed filter holes on its inner side, precisely intercepting clumps of impurities larger than the filter holes, achieving fine filtration of the pesticide solution and preventing large particles from entering subsequent processes. When a blockage occurs in the pipeline, the support cylinder 903 is fixed inside the filter plate 902, providing sliding guide support for the slide rod 904 and limiting its linear motion trajectory to prevent lateral deviation during its pushing process. The slide rod 904 is slidably mounted inside the support cylinder 903, receiving the pushing power transmitted by the connecting rod 907, which drives the perforated plate 905 and the push rod 906 to complete a synchronous linear reciprocating motion, accurately transmitting the power for the unblocking action. The perforated plate 905 is fixed to the right side of the slide rod 904, and its surface has liquid passage holes, which do not obstruct the normal flow of the liquid while driving the push rod 906 to complete the pushing action synchronously, ensuring that the flow of the liquid and the unblocking action are coordinated. Without interference, the push rod 906, with a diameter smaller than the filter hole diameter of the filter plate 902, can precisely embed itself inside the filter hole when moving synchronously with the perforated plate 905, directly pushing out stubborn impurities embedded in the gaps of the filter hole and thoroughly clearing the blocked filter hole. The connecting rod 907 is located directly to the right of the wedge block 62, receiving the squeezing force of the wedge block 62 and synchronously transmitting the power to the slide rod 904, realizing the power docking between the linkage mechanism 6 and the anti-blocking mechanism 9. The rectangular box 908 is fixed on the front side of the filter cylinder 901, providing a closed installation space for the crossbar 909, the rectangular plate 910 and the return spring 911, providing a stable installation carrier for the elastic return structure. The crossbar 909 is slidably installed. Inside the rectangular box 908, both ends are fixedly connected to the connecting rod 907 and the rectangular plate 910 respectively, synchronously transmitting the power of the connecting rod 907 to the rectangular plate 910 to ensure smooth power transmission for the reset action. The rectangular plate 910 is slidably installed inside the rectangular box 908, providing positioning support for the right end of the reset spring 911. It moves synchronously with the crossbar 909, compressing the reset spring 911 to complete energy storage. The reset spring 911 is sleeved on the outside of the crossbar 909, with both ends fixedly connected to the inner wall of the rectangular box 908 and the rectangular plate 910 respectively. After the wedge block 62 disengages from the connecting rod 907, it releases the stored energy to drive all the unblocking components to automatically reset, completing one complete unblocking cycle.

[0047] The liquid inlet pipe 10 is fixed to the inner top wall of the outer box 4 and extends upward to the top of the outer box 4. It serves as a channel for adding pesticides and clean water. Operators can directly add and prepare pesticide solutions into the outer box 4 through this pipe without having to frequently open the lid.

[0048] During use, move the entire machine to the edge of the farmland. Inject the prepared pesticide and water mixture into the outer casing 4 through the inlet pipe 10. Ensure all pipe connections are secure and leak-free. Based on the height of the crops to be sprayed, pre-set the lifting height parameters of the spraying assembly 7. Start the motor 52 of the stirring assembly 5. The motor 52 is stably supported by the motor frame 51, driving the stirring shaft 53 and the three equidistantly distributed stirring blades 54 to rotate synchronously, continuously agitating the mixed pesticide solution inside the outer casing 4. This prevents the pesticide's active ingredients from settling and stratifying, maintaining a uniform concentration throughout the process and avoiding excessive differences in concentration between the upper and lower layers. The stirring shaft 53... While rotating, the right-angle rod 61 of the bottom linkage mechanism 6 rotates in a circular motion. The wedge-shaped block 62 at the end of the right-angle rod 61 rotates synchronously. The inclined surface of the wedge-shaped block 62 periodically presses the connecting rod 907, pushing the slide rod 904 to slide to the left within the support cylinder 903. This causes the push rod 906 to precisely embed into the filter holes of the filter plate 902, directly pushing out the impurities embedded in the filter holes. When the wedge-shaped block 62 disengages from the connecting rod 907, the return spring 911 pushes the rectangular plate 910, the crossbar 909, and all linkage components to automatically reset, completing one automatic filter cleaning action. This action is repeated during the stirring process, and the filter plate 902 does not require manual disassembly and cleaning throughout the entire process. The servo motor 72 of the spray assembly 7 is activated. The servo motor 72 drives the threaded rod 73 to rotate, which in turn drives the threaded block 74 to move the lifting frame 75 up and down along the strip-shaped hole of the outer box 71. The overall height of the support base 76, spray pipe 77, and spray nozzle 78 is adjusted as needed to ensure that the spray height is perfectly matched to the current crop height, avoiding the problem of the spray bar scratching the crop if it is too low or causing the pesticide to drift and be wasted if it is too high. The pump body 81 of the infusion assembly 8 is activated. The pesticide solution inside the outer box 4 first passes through the filter cartridge 901 and filter plate 902 of the anti-clogging mechanism 9 to complete fine filtration, completely intercepting the clumps and impurities in the pesticide solution. The filtered pesticide solution enters the pump body 81 through the input pipe 82, and then passes through... The output pipe 83 delivers the pesticide to the inside of the spray pipe 77, and finally it is evenly atomized and sprayed out from the spray nozzle 78. The operator controls the whole machine to slowly move along the rows of the farmland to complete the plant protection spraying operation of the entire farmland. After a single spraying operation is completed, clean water is injected into the outer box 4, and the whole machine is started to run idle for 5 to 10 minutes to thoroughly clean the outer box 4, all pipes and the inside of the spray nozzle 78 to prevent the residual pesticide from drying and clumping and clogging the pipes. The filter cartridge 901 is removed from the input pipe 82 regularly to clean the impurities accumulated inside. The atomization status of the spray nozzle 78 is checked. After confirming that there are no abnormalities in all parts, it can be stored away for the next operation.

[0049] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0050] In summary, this self-propelled boom sprayer for agriculture uses the control panel 1 as the operating platform for the entire machine, integrating functions such as liquid mixing, automatic unclogging and filtration, and adjustable boom height. Relying on the bottom shock-absorbing base 2 and the moving wheels 3, it can adapt to complex field road conditions. It solves the industry pain points of traditional boom sprayers, such as easy sedimentation and stratification of liquid, easy clogging of the filter screen, and inability to adapt the boom height to crops with different plant heights. It can be widely used for field plant protection spraying operations of various crops such as wheat, corn, fruits and vegetables, and significantly improves the efficiency of farmland plant protection operations and the uniformity of liquid spraying.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An agricultural self-propelled boom sprayer, comprising an operating platform (1), a shock-absorbing seat (2) fixedly installed at the bottom of the operating platform (1), and casters (3) fixedly installed at the bottom of the shock-absorbing seat (2), an outer casing (4) fixedly installed at the top of the operating platform (1), a stirring assembly (5) extending to its inner side being provided at the top of the outer casing (4), a spraying assembly (7) being provided on the right side of the top of the operating platform (1), a liquid delivery assembly (8) connected to the spraying assembly (7) being provided at the top of the operating platform (1), and a liquid inlet pipe (10) extending to its top being fixedly installed on the inner top wall of the outer casing (4), characterized in that: The bottom of the stirring assembly (5) is provided with a linkage mechanism (6), and one end of the infusion assembly (8) extends to the inside of the outer box (4) and is provided with an anti-blocking mechanism (9). The stirring assembly (5) includes a motor frame (51), the motor frame (51) is fixedly installed on the top of the outer casing (4), a motor (52) is fixedly installed on the inner side of the motor frame (51), a stirring shaft (53) extending to the inner side of the outer casing (4) is fixedly installed at the output shaft of the motor (52), and stirring blades (54) are fixedly installed on the outer side of the stirring shaft (53).

2. The agricultural self-propelled boom sprayer according to claim 1, characterized in that: The linkage mechanism (6) includes a right-angle rod (61), with the right-angle rod (61) fixedly installed at one end of the bottom of the stirring shaft (53), and a wedge block (62) fixedly installed at the other end of the right-angle rod (61).

3. The agricultural self-propelled boom sprayer according to claim 1, characterized in that: The spray assembly (7) includes an outer box (71). The outer box (71) is fixedly installed on the top right side of the operating table (1). A servo motor (72) is fixedly installed on the inner bottom wall of the outer box (71). A threaded rod (73) that is rotatably connected to the inner top wall of the outer box (71) is fixedly installed at the output shaft of the servo motor (72). A threaded block (74) is threadedly connected to the outer side of the threaded rod (73). A lifting frame (75) that penetrates the outer box (71) and extends to its right side is fixedly installed on the right side of the threaded block (74). A support base (76) is fixedly installed on the top of the lifting frame (75). A spray pipe (77) that extends to its rear side is movably installed on the front side of the support base (76). A spray nozzle (78) that extends to its right side is movably installed on the right side of the inner wall of the spray pipe (77).

4. An agricultural self-propelled boom sprayer according to claim 3, characterized in that: The infusion assembly (8) includes a pump body (81). The pump body (81) is fixedly installed on the top of the operating table (1) between the outer box (4) and the outer casing (71). The input end of the pump body (81) is fixedly installed with an input pipe (82) extending to the inside of the outer box (4). The output end of the pump body (81) is fixedly installed with an output pipe (83). The output pipe (83) extends to the inside of the support base (76) and is movably connected to the nozzle (77).

5. An agricultural self-propelled boom sprayer according to claim 2 or 4, characterized in that: The anti-clogging mechanism (9) includes a filter cartridge (901). The filter cartridge (901) is movably installed on the outer side of the inner end of the input pipe (82) located inside the outer casing (4). A filter plate (902) is movably installed on the left side of the inner wall of the filter cartridge (901). A support cylinder (903) is fixedly installed on the inner side of the filter plate (902). A slide rod (904) extending to the inner side of the filter cartridge (901) is slidably installed on the left side of the support cylinder (903). A perforated plate (905) is fixedly installed on the right side of the slide rod (904). A push rod (906) located on the right side of the filter plate (902) is fixedly installed on the left side of the perforated plate (905). The slide rod (906) A connecting rod (907) is fixedly installed on the left side of the filter cartridge (904). A rectangular box (908) is fixedly installed on the front side of the filter cartridge (901). A crossbar (909) extending to the left side and fixedly connected to the connecting rod (907) is slidably installed on the inner side of the rectangular box (908). A rectangular plate (910) slidably connected to the inner side of the rectangular box (908) is fixedly installed on the right side of the crossbar (909). A return spring (911) fixedly connected to the left side of the inner wall of the rectangular box (908) and sleeved on the outside of the crossbar (909) is fixedly installed on the left side of the rectangular plate (910). The connecting rod (907) is located directly to the right of the wedge block (62).

6. An agricultural self-propelled boom sprayer according to claim 5, characterized in that: The filter plate (902) has filter holes on its inner side, and the push rod (906) is located on the right side of the filter holes. The diameter of the push rod (906) is smaller than the diameter of the filter holes.

7. An agricultural self-propelled boom sprayer according to claim 1, characterized in that: The front end of the left side of the wedge block (62) is designed to be inclined, and the front side of the wedge block (62) is designed to have an arc-shaped chamfer.

8. An agricultural self-propelled boom sprayer according to claim 1, characterized in that: The number of stirring blades (54) is three and they are evenly distributed from top to bottom. The inner top wall of the outer box (4) is provided with a round hole that matches the stirring shaft (53).

9. An agricultural self-propelled boom sprayer according to claim 3, characterized in that: The inner wall of the outer box (71) has strip-shaped holes on both the front and rear sides that are compatible with the lifting frame (75), and the inner side of the support base (76) has mounting holes that are compatible with the nozzle (77).

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