Liquid manure spreader

Abstract

The present application relates to the technical field of fertilizer spreading vehicle, and discloses a liquid fertilizer spreading vehicle, which comprises a hollow tank body, a filling pipe arranged at the front end of the tank body and used for filling liquid fertilizer, a recessed discharge port arranged at the inner bottom of the rear side of the tank body, a discharge pipe connected with the discharge port through a shunt passage and extending to the rear part of the tank body and used for fertilizer application, and a slag discharge pipe connected with an impurity collecting container, and a wave erosion prevention assembly comprising a plate group structure distributed along the axis of the hollow tank body at intervals, wherein the liquid at the bottom of the tank body is forced to be sucked to the top for spraying through the closed-loop fluid design of the circulating anti-deposition system, so that a continuous vortex stirring is formed, the movable baffle of the wave erosion prevention assembly converts the liquid impact kinetic energy into directional washing pressure, the deposition area at the top of the tank body is precisely hit, the liquid stratification and deposition adhesion are eliminated by the double systems in cooperation, the fertilizer concentration is ensured to be uniform and stable during the fertilizer application, and the uneven absorption of crops is avoided.

Description

Technical Field

[0001] This invention relates to the field of fertilizer spreading vehicle technology, specifically a liquid fertilizer spreading vehicle. Background Technology

[0002] Liquid fertilizer spreaders are key pieces of equipment in modern agriculture for the efficient application of liquid organic fertilizers, inorganic fertilizers, and the return of livestock and poultry manure to the fields. Their core function is to use a pumping system to deliver liquid fertilizer from the tank to the nozzles, evenly spreading it onto the surface of the farmland or into the deeper soil layers to achieve the dual goals of nutrient supply and soil improvement. These devices are widely used in field crops, pastures, orchards, and compared to traditional solid fertilizer application methods, they offer advantages such as higher operational efficiency, reduced labor costs, and improved fertilizer utilization.

[0003] However, liquid fertilizer spreaders still face significant technical bottlenecks in practical applications. One of the core issues is that liquid fertilizer is prone to particle sedimentation during transportation and application due to stagnation or uneven flow. Livestock manure, biogas slurry, and other raw materials often contain incompletely dissolved organic matter, suspended particles, and heavy metal impurities. Without effective anti-sedimentation measures, sediment will gradually accumulate at the bottom of the tank, affecting liquid flow and the uniformity of fertilization. Furthermore, long-term sediment buildup can clog pipes and nozzles, increasing equipment maintenance frequency and failure rate.

[0004] Another core issue lies in the insufficient dynamic control of liquid distribution by existing application devices. Traditional equipment relies heavily on mechanical stirring or manual periodic tank cleaning, making it difficult to maintain the uniformity of liquid composition. Especially during vehicle movement, liquid sloshing exacerbates particle stratification, leading to localized areas of excessively high or low concentrations in the sprayed area, directly impacting crop absorption. Although some devices attempt to alleviate the problem by adding stirring motors or optimizing tank structure, these solutions often increase energy consumption, structural complexity, and maintenance costs, and are difficult to adapt to complex terrain and long-term operation requirements.

[0005] The limitations of existing technologies highlight the room for improvement in the prevention of sedimentation and uniform fertilization of liquid fertilizer spreaders. How to achieve dynamic circulation and stable distribution of liquid through the synergistic effect of structural design and power transmission has become a key direction for improving equipment performance. Summary of the Invention

[0006] The purpose of this invention is to provide a liquid fertilizer application vehicle to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a liquid fertilizer spreading vehicle, comprising:

[0008] Hollow tank:

[0009] It is equipped with a filling tube at the front end for injecting liquid fertilizer;

[0010] A recessed discharge port is located on the inner bottom of the rear side, which is connected via a distribution path:

[0011] The discharge pipe extends to the rear of the vehicle for fertilization operations;

[0012] The slag discharge pipe leads to the impurity collection container;

[0013] Anti-wave scour components:

[0014] The plate assembly structure, which is spaced along the axis of the hollow tank, includes a circular positioning plate and movable baffles symmetrically arranged on both sides of the circular positioning plate, for suppressing liquid sloshing and directional flushing of sediment in the hollow tank.

[0015] Multi-layer filtration module:

[0016] It can be detachably installed at the top inlet of the recessed discharge port to intercept suspended solid impurities;

[0017] Circulating anti-sedimentation system:

[0018] It includes an arc-shaped conveying pipe connecting the bottom and top of the hollow tank and a top spraying device, forming a closed-loop flow path;

[0019] Three-section folding application mechanism:

[0020] It includes a central fixed rod fixed to the rear of the vehicle body, folding wing rods symmetrically hinged to its two sides, spray nozzles evenly distributed on the side walls of the folding wing rods, and an angle adjustment device for driving the unfolding angle.

[0021] The top of the central fixing rod is provided with an inverted triangular support frame, the two sides of which match the guide rail structure on the upper surface of the folding wing rod, forming a rigid support in the stored state.

[0022] According to the above technical solution, the circular positioning plate of the anti-wave scouring component is fixedly connected to the inner wall of the hollow tank.

[0023] The movable baffle is dynamically connected to the circular positioning plate through the following structure:

[0024] The central connecting rod runs through the central groove of the two plates, restricting lateral displacement.

[0025] The edge connecting rod group is distributed in a circumferential array, including a top small-diameter rod, a middle transition rod, and a bottom large-diameter rod with increasing hole diameter from top to bottom;

[0026] Each connecting rod is equipped with a compression spring at both ends, forming an elastic reset mechanism for the movable baffle;

[0027] Hydraulic dampers are evenly distributed between the circular positioning plate and the movable baffle.

[0028] According to the above technical solution, the circular positioning plate is provided with:

[0029] A multi-layered inclined scouring hole group, distributed along the height direction, including:

[0030] The top flushing hole is angled towards the near end of the inner wall of the hollow tank.

[0031] The bottom flushing hole is angled towards the far end of the inner wall of the hollow tank.

[0032] The central gradient hole has an angle that changes continuously from top to bottom.

[0033] The pressure conversion channel has an inlet end connected to the cavity of the arc-shaped piston seat assembly, and an outlet end branched to a multi-layer inclined flushing hole assembly, with a base block installed inside.

[0034] The pressure conversion mechanism connects to a movable baffle via a piston rod that passes through a circular positioning plate, forming a dynamic pressure transmission path.

[0035] According to the above technical solution, the pressure conversion mechanism is independently disposed in the upper part of the circular positioning plate, including:

[0036] Arc-shaped piston seat assembly is evenly distributed circumferentially along the upper part of the circular positioning plate;

[0037] The piston rod passes through and is movably mounted on the arc-shaped piston seat assembly, with both ends fixed to the side walls of the movable baffles on both sides;

[0038] The linkage cable is connected at the beginning to the middle of the piston rod, the middle section is wound around and fixed to the corner wheel inside the tank, and the end is connected to the force-bearing end of the piston head.

[0039] The return spring is sleeved on the outside of the linkage cable, with one end abutting the piston head and the other end fixed to the base block.

[0040] According to the above technical solution, the multi-layer filtering module includes:

[0041] Ring-shaped magnetic base with embedded neodymium iron boron permanent magnet array;

[0042] Coarse and fine filters are stacked and inserted into an annular magnetic base, with the mesh size of the fine filter being 1 / 2 to 1 / 3 that of the coarse filter.

[0043] A silicone sealing ring is pressed between the annular magnetic base and the recessed discharge port to form a radial seal.

[0044] According to the above technical solution, the angle adjustment device includes:

[0045] Guide slide, fixed to the side wall of the central fixed rod;

[0046] The ring rack is fixed at one end to the side wall of the folding wing rod, and movably mounted on the guide slide at the other end.

[0047] The drive motor has a transmission gear on its output shaft that meshes with a ring rack.

[0048] According to the above technical solution, the circulating anti-sedimentation system further includes:

[0049] A screw conveyor pump is installed at the inlet end of the arc-shaped conveying pipeline;

[0050] A conical suction head is located at the bottom of the hollow tank and connected to the inlet end of the arc-shaped delivery pipe.

[0051] The top spraying device is an annular multi-hole spray pipe, with the spray holes tilted towards the central axis of the hollow tank.

[0052] According to the above technical solution, the guide slide includes:

[0053] The stainless steel main frame has a T-shaped guide groove inside, which is set to correspond to the T-shaped guide block on the back of the ring rack;

[0054] Polytetrafluoroethylene wear-resistant bushing, embedded in the inner wall of the T-shaped guide groove;

[0055] The tooth surface of the annular rack is provided with a molybdenum disulfide solid lubricant layer.

[0056] According to the above technical solution, the recessed discharge port is a double-curvature anti-clogging structure, comprising:

[0057] The upper vortex guide section has an inclined arc-shaped profile to guide the liquid to form a swirling flow.

[0058] The lower impurity accumulation section is tapered and has a wear-resistant layer on the inner wall to accelerate the movement of sediment towards the slag discharge port.

[0059] The discharge pipe and the slag discharge pipe are located in sections with different curvatures:

[0060] The discharge pipe inlet is located in the widest region of the vortex guide section;

[0061] The slag discharge pipe inlet is located in the lower middle part of the impurity accumulation section, and the inlet direction forms an acute tangential angle with the conical surface.

[0062] According to the above technical solution, the inverted triangular support frame includes:

[0063] The support body has adjustment grooves on both sides of the beveled edge;

[0064] The ceramic-coated roller assembly is installed in the adjustment groove via adjusting bolts;

[0065] The end of the folding wing rod is provided with an overlapping protrusion;

[0066] When the folding wing bar is fully retracted:

[0067] The two folding wing rods and the central fixed rod form an isosceles triangular stable structure;

[0068] The slot at the end of the overlapping protrusion engages and locks with the protrusion.

[0069] The ceramic-coated roller assembly and the wear-resistant guide rail at the bottom of the folding wing rod form a support and limiting contact surface.

[0070] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0071] (1) Multi-level synergistic anti-sedimentation to ensure fertilizer uniformity: Through the closed-loop fluid design of the circulating anti-sedimentation system, the high-concentration liquid at the bottom of the tank is forced to be drawn to the top for spraying, forming a continuous vortex. The active baffle of the anti-wave flushing component converts the liquid impact kinetic energy into directional flushing pressure, accurately hitting the impurity sedimentation area at the top of the tank. The dual system works together to eliminate liquid stratification and sediment adhesion, ensuring that the fertilizer concentration is uniform and stable during fertilization and avoiding uneven crop absorption.

[0072] (2) Dynamic self-cleaning mechanism to reduce the risk of blockage: The pressure conversion mechanism innovatively utilizes the natural energy of liquid sloshing during transportation: When the movable baffle is impacted and displaced, the linkage pulls the piston head to open the flushing channel, and the multi-layer inclined flushing hole group automatically sprays and cleans the tank wall and tank bottom. No external power intervention is required throughout the process, and sediment stripping is completed simultaneously during transportation, reducing the probability of blockage in the discharge system from the source.

[0073] (3) Intelligent impurity separation reduces the frequency of filter maintenance: The double curvature structure of the concave discharge port induces swirling flow through the upper vortex guide section, so that impurities naturally settle to the lower impurity aggregation section. The multi-layer filter module uses a magnetic base to adsorb metal impurities, and with the coarse / fine double mesh, it physically intercepts particles of different sizes. The graded filtration strategy greatly extends the effective working time of the filter and increases the cleaning cycle to more than twice that of the traditional design.

[0074] (4) The folding mechanism combines rigidity and flexibility to improve equipment life: When the inverted triangular support frame is in the storage state, the ceramic roller group and the wear-resistant guide rail form a rolling support surface, which completely eliminates the sliding friction wear of the folding joint; the interlocking structure of the overlapping protrusion and the locking protrusion disperses the vibration load to the rigid frame of the central fixed rod. During operation, the combination of the annular rack of the angle adjustment device and the low friction bushing ensures that the wing rod unfolds smoothly under full load conditions.

[0075] (5) Energy consumption optimization design to achieve green operation: The energy recovery mechanism of the anti-wave flushing component converts the ineffective kinetic energy of liquid impact into effective flushing power; the spiral conveying pump of the circulating anti-sedimentation system only needs to maintain low speed operation to achieve micro-circulation of liquid in the tank.

[0076] (6) Modular maintenance system to reduce usage costs: The magnetic base and dual filter screen of the multi-layer filter module adopt a split plug-in structure, which can be quickly disassembled for cleaning or replacement; the arc-shaped piston seat of the pressure conversion mechanism is independently encapsulated, and the positioning plate does not need to be disassembled during maintenance; the anti-wear bushing and ring rack of the guide slide adopt standardized dimensions, which can support partial replacement rather than overall scrapping. Attached Figure Description

[0077] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0078] Figure 1 This is a first perspective view of the present invention;

[0079] Figure 2 This is a second perspective view of the present invention;

[0080] Figure 3 This is a third perspective view of the present invention;

[0081] Figure 4 This is a fourth perspective schematic diagram of the present invention;

[0082] Figure 5 This is the fifth perspective schematic diagram of the present invention;

[0083] Figure 6 This is a first partial three-dimensional schematic diagram of the present invention;

[0084] Figure 7 This is a second partial perspective view of the present invention;

[0085] Figure 8 This is a third partial perspective view of the present invention;

[0086] Figure 9 This is a fourth partial perspective view of the present invention;

[0087] Figure 10 This is a fifth partial perspective view of the present invention;

[0088] Figure 11 This is a sixth partial perspective view of the present invention;

[0089] Figure 12 This is a third-dimensional schematic diagram of the seventh part of the present invention;

[0090] Figure 13 This is the eighth partial perspective view of the present invention;

[0091] Figure 14 This is a third-dimensional schematic diagram of the ninth part of the present invention;

[0092] Figure 15 This is a three-dimensional schematic diagram of the tenth part of the present invention;

[0093] Figure 16 This is the present invention. Figure 8 Enlarged view of point A in the middle;

[0094] In the diagram: 1-Hollow tank body, 101-Filling pipe, 102-Recessed discharge port, 102a-Upper vortex guide section, 102b-Lower impurity accumulation section, 103-Discharge pipe, 104-Slag discharge pipe, 2-Anti-wave scouring assembly, 201-Circular positioning plate, 202-Modible baffle, 203-Central connecting rod, 204-Edge connecting rod assembly, 2041-Top small-diameter rod, 2042-Intermediate transition rod, 2043-Bottom large-diameter rod 205-Multi-layer inclined flushing hole group, 2051-Top layer flushing hole, 2052-Bottom layer flushing hole, 2053-Intermediate gradient hole, 206-Base block, 207-Pressure conversion mechanism, 2070-Arc-shaped piston seat group, 2071-Piston rod, 2072-Return spring, 2073-Linkage cable, 2074-Corner wheel, 2075-Piston head, 208-Compression spring, 209-Hydraulic damper, 3-Multi-layer filter module, 3 01- Annular magnetic base, 302- Coarse filter screen, 303- Fine filter screen, 304- Silicone sealing ring, 305- Neodymium iron boron permanent magnet, 4- Circulating anti-sedimentation system, 401- Arc-shaped conveying pipe, 402- Top spraying device, 403- Spiral conveying pump, 404- Conical suction head, 5- Three-section folding application mechanism, 501- Central fixing rod, 502- Folding wing rod, 5021- Wear-resistant guide rail, 5022- Overlapping protrusion. 503-Spray nozzle, 504-Angle adjustment device, 5041-Guide slide, 5041a-Stainless steel main frame, 5041b-PTFE anti-wear bushing, 5042-Ring rack, 5042a-T-shaped guide block, 5042b-Molybdenum disulfide solid lubricating layer, 5043-Drive motor, 5044-Transmission gear, 505-Inverted triangular support bracket, 5051-Bracket body, 5052-Ceramic coated roller assembly. Detailed Implementation

[0095] 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.

[0096] Please see Figure 1-16 The present invention provides a technical solution: a liquid fertilizer application vehicle, comprising:

[0097] Hollow tank 1:

[0098] The front end is equipped with an injection pipe 101 for injecting liquid fertilizer;

[0099] A recessed discharge port 102 is provided on the inner bottom of the rear side, which is connected through a diversion channel:

[0100] The discharge pipe 103 extends to the rear of the vehicle body for fertilization operations;

[0101] Slag discharge pipe 104 leads to the impurity collection container;

[0102] Anti-wave scour component 2:

[0103] The plate assembly structure distributed at intervals along the axis of the hollow tank 1 includes a circular positioning plate 201 and movable baffles 202 symmetrically arranged on both sides of the circular positioning plate 201, which are used to suppress liquid sloshing and directional flushing of sediment in the hollow tank 1.

[0104] Multi-layer filter module 3:

[0105] It can be detachably installed at the top inlet of the recessed discharge port 102 to intercept suspended solid impurities;

[0106] Circulating anti-sedimentation system 4:

[0107] The curved conveying pipe 401 connecting the bottom and top of the hollow tank 1 and the top spraying device 402 form a closed-loop flow path.

[0108] Three-section folding application mechanism 5:

[0109] It includes a central fixed rod 501 fixed to the rear of the vehicle body, folding wing rods 502 symmetrically hinged to both sides of the rod, spray nozzles 503 evenly distributed on the side walls of the folding wing rods 502, and an angle adjustment device 504 for driving the unfolding angle.

[0110] The top of the central fixing rod 501 is provided with an inverted triangular support bracket 505, the two sides of which are matched with the guide rail structure on the upper surface of the folding wing rod 502 to form a rigid support in the storage state.

[0111] Specifically, the circular positioning plate 201 of the anti-wave scouring assembly 2 is fixedly connected to the inner wall of the hollow tank 1;

[0112] The movable baffle 202 is dynamically connected to the circular positioning plate 201 through the following structure:

[0113] The central connecting rod 203 passes through the central groove of the two plates to limit lateral displacement.

[0114] The edge connecting rod group 204 is distributed in a circumferential array, including a top small diameter rod 2041, a middle transition rod 2042, and a bottom large diameter rod 2043 with increasing aperture from top to bottom;

[0115] Each connecting rod is equipped with a compression spring 208 at both ends, forming an elastic reset mechanism for the movable baffle 202;

[0116] Hydraulic dampers 209 are evenly distributed between the circular positioning plate 201 and the movable baffle 202;

[0117] The circular positioning plate 201 is fixedly connected to the inner wall of the hollow tank 1, serving as the reference frame for the entire assembly and providing stable support and guidance for the movable baffle 202. The movable baffle 202 is dynamically connected to the positioning plate 201 via the central connecting rod 203. Its lateral displacement is limited to the sliding groove range of the circular positioning plate 201, allowing only reciprocating motion along the axial direction. When the liquid sloshes due to inertia during vehicle operation, the movable baffle 202 moves with the liquid impact force, dispersing the sloshing energy into local vibrations, thereby reducing the impact of the liquid on the entire tank. The impact force and movement of the movable baffle 202 cause the liquid to flow in a directional direction. Combined with the subsequently designed multi-layer inclined flushing hole group 205, the bottom of the tank is periodically flushed to prevent fertilizer particles or impurities from accumulating. The central connecting rod 203 passes through the groove between the movable baffle 202 and the positioning plate 201, ensuring that the baffle moves only along the axial direction and avoiding structural instability or sealing failure due to lateral displacement. The top small-diameter rod 2041 is sensitive to the high-frequency vibration of liquid sloshing. By limiting the liquid flow velocity through the small diameter, it enhances the suppression of slight sloshing. To achieve optimal sway control, the intermediate transition rod 2042 balances the buffering needs of the top and bottom, accommodating moderate swaying. The large-diameter bottom rod 2043 allows for greater flow, mitigating liquid impact during severe swaying and reducing the risk of sediment buildup at the bottom. The edge connecting rod assembly 204 is distributed in a circumferential array, uniformly distributing the force on the movable baffle 202, preventing localized stress concentration, and improving overall sway resistance. When the liquid swaying stops, the compression spring 208, through preload, pushes the movable baffle 202 back to its initial position, ensuring the component's initial stability. Finally in a standby state, the compression spring 208 absorbs part of the impact energy during the movement of the movable baffle 202, reducing the direct impact of the liquid on the tank and reducing the risk of structural fatigue damage. The hydraulic damper 209 is evenly distributed between the positioning plate 201 and the movable baffle 202. It limits the movement speed of the movable baffle 202 through the viscous resistance of the liquid, avoiding secondary impact or structural vibration caused by excessive movement. It can effectively attenuate the inertial fluctuations in the reciprocating motion of the baffle, so that the liquid sloshing is absorbed smoothly, and prevent the tank from resonating or experiencing local stress overload.

[0118] Through the coordinated operation of the above structures, the anti-wave scouring component 2 achieves the following comprehensive effect:

[0119] Highly efficient wave suppression: Through the dynamic movement of the movable baffle 202 and the layered buffering of the edge connecting rod group 204, the liquid sloshing energy is converted into controllable local vibration, significantly reducing the overall sloshing amplitude of the tank.

[0120] Targeted flushing: The reciprocating motion of the movable baffle 202, combined with the design of the subsequent flushing hole group, can periodically clean the bottom of the tank to prevent blockage or corrosion caused by the accumulation of sediment.

[0121] Structural stability: The cooperation between the central connecting rod 203 and the hydraulic damper 209 ensures that the components maintain stable movement under complex working conditions and extends the service life of the equipment;

[0122] Specifically, the circular positioning plate 201 is provided with:

[0123] A multi-layered inclined scouring hole group 205, distributed along the height direction, includes:

[0124] Top flushing hole 2051, inclined towards the near end of the inner wall of hollow tank 1;

[0125] Bottom flushing hole 2052, inclined towards the far end of the inner wall of hollow tank 1;

[0126] The intermediate gradient hole 2053 has an angle that changes continuously from top to bottom.

[0127] The pressure conversion channel has an inlet end connected to the cavity of the arc-shaped piston seat assembly 2070, and an outlet end branched to the multi-layer inclined flushing hole assembly 205, with a base block 206 installed inside.

[0128] The pressure conversion mechanism 207 connects to the movable baffle 202 through the piston rod 2071 passing through the circular positioning plate 201, forming a dynamic pressure transmission path;

[0129] The top flushing holes 2051 are inclined towards the near end of the tank's top wall. When the liquid flows due to agitation or flushing requirements, these holes guide the liquid to the near end of the top wall, forming a local flushing flow. This removes suspended impurities or light deposits adhering to the near end of the top wall, preventing them from accumulating into stubborn dirt over time. The bottom flushing holes 2052 are inclined towards the far end of the tank's top wall. By guiding the liquid flow to the far end of the top wall, they create a reverse flushing effect, covering the cleaning blind spots at the far end of the top wall and ensuring that impurities in the top arc area are removed. Thorough cleaning is achieved through the continuous change in angle of the intermediate gradient orifice 2053 from top to bottom, forming a transitional flushing path from the near end to the far end. This fills the gap between the top and bottom flushing orifices, ensuring that the area between the near and far ends of the top wall is flushed, avoiding residual impurities caused by insufficient local flushing. The multi-layered inclined flushing orifice group 205 is only set in the upper middle part, eliminating the need for a lower flushing orifice design, which reduces manufacturing complexity and maintenance costs. Furthermore, the lower part can rely on natural fluid flushing, while the bottom area of ​​the tank is flushed by liquid flow and gravity. When the liquid level is high, the sediment will naturally gather at the slag discharge port 104, without the need for additional flushing holes. When the liquid level is high, the system drives the flushing hole group to work by sucking liquid, using liquid kinetic energy to clean the top wall area. At this time, the liquid flow path covers all flushing holes, ensuring efficient cleaning. As the liquid level drops, the flushing hole group is gradually exposed to the air. At this time, the system switches to air flushing mode. Through the dynamic pressure transmission of the pressure conversion mechanism 207, the wave kinetic energy generated by the liquid sloshing in the tank is converted into compressed air, driving the air to be ejected through the flushing hole group, forming airflow disturbance, and removing the trace impurities remaining on the top wall. No additional power consumption is required. It relies entirely on mechanical motion and wave energy to achieve energy-saving operation. The movable baffle 202 of the anti-wave flushing component 2 reciprocates when the liquid sloshes. Through the piston rod 2071, the kinetic energy is transmitted to the pressure conversion channel and converted into compressed air or liquid flow pressure to drive the flushing hole group to work. The entire flushing process does not require an external power source and only relies on the wave energy generated by the liquid sloshing during vehicle movement, which is in line with the green energy-saving concept.

[0130] Specifically, the pressure conversion mechanism 207 is independently disposed in the upper part of the circular positioning plate 201, and includes:

[0131] The arc-shaped piston seat assembly 2070 is evenly distributed circumferentially along the upper part of the circular positioning plate 201;

[0132] Piston rod 2071 passes through and is movably installed in arc-shaped piston seat assembly 2070, with both ends fixed to the side walls of movable baffles 202 on both sides;

[0133] The linkage cable 2073 is connected at the first end to the middle of the piston rod 2071, the middle section is wound around the corner wheel 2074 fixed to the inner wall of the tank, and the end is connected to the force-bearing end of the piston head 2075.

[0134] The return spring 2072 is sleeved on the outside of the linkage cable 2073, with one end abutting the piston head 2075 and the other end fixed to the base block 206;

[0135] The arc-shaped piston seat assembly 2070 is evenly distributed circumferentially along the upper part of the circular positioning plate 201, serving as a mounting bracket for the piston rod 2071. The piston rod 2071 passes through and is movably mounted on the arc-shaped piston seat assembly 2070, with both ends fixed to the side walls of the movable baffles 202 on both sides. When the liquid sloshes due to vehicle movement, the reciprocating motion of the movable baffles 202 is directly converted into linear displacement within the arc-shaped piston seat assembly 2070 via the piston rod 2071. This displacement is further transmitted to the piston head 2075 via the linkage cable 2073, driving the opening and closing of the pressure conversion channel or pressure distribution, thus forming dynamic pressure regulation. The first end of the linkage cable 2073 is connected to the middle of the piston rod 2071, the middle section is wound around and fixed to the corner wheel 2074 on the inner wall of the tank, and the end is connected to the piston head 2075. At the force-bearing end 75, the corner wheel 2074 changes the winding direction of the linkage cable 2073, converting the linear motion of the piston rod 2071 into the reciprocating motion of the piston head 2075, thus achieving flexible adjustment of the pressure transmission path. When the movable baffle 202 moves due to liquid impact, the linkage cable 2073 efficiently transmits kinetic energy to the piston head 2075, driving the dynamic response of the pressure conversion channel without external energy input. When the liquid sloshing stops, the return spring 2072 pushes the piston head 2075 back to the initial position through preload, ensuring that the pressure conversion mechanism is always in standby mode. The linkage cable 2073 winding around the corner wheel forms a pulley effect, amplifying the lateral displacement of the baffle into the longitudinal stroke of the piston head 2075, achieving the effect of "small displacement and large compression".

[0136] Specifically, the multi-layer filtering module 3 includes:

[0137] The annular magnetic base 301 has an array of embedded neodymium iron boron permanent magnets 305;

[0138] Coarse filter 302 and fine filter 303 are stacked and inserted into the annular magnetic base 301. The mesh size of the fine filter 303 is 1 / 3 to 1 / 5 of that of the coarse filter 302.

[0139] The silicone sealing ring 304 is pressed between the annular magnetic base 301 and the recessed discharge port 102 to form a radial seal.

[0140] The annular magnetic base 301 provides strong magnetic attraction through an embedded array of neodymium iron boron permanent magnets 306, used to fix the coarse filter screen 302 and the fine filter screen 303. The attraction force generated by the array of permanent magnets 306 can firmly hold the filter screen without bolts or other mechanical fasteners, simplifying the installation process. When cleaning or replacing the filter screen, simply remove the magnetic base 301 from the recessed discharge port 102 to directly remove the filter screen without complicated operations. The coarse filter screen 302 acts as the first filtration barrier, intercepting larger particulate impurities (such as gravel, undissolved fertilizer particles, etc.), reducing the load pressure on subsequent filter screens and extending the overall service life. Its mesh design allows liquid to pass through smoothly while effectively blocking hard particles that may damage the equipment. The fine filter screen 303 is superimposed on the coarse filter screen 302. Above 02, the mesh size is significantly smaller than that of the coarse filter, further intercepting tiny suspended impurities (such as fine organic matter, colloidal particles, etc.). Through the layered design, two-stage filtration is achieved, ensuring the purity of the output liquid and preventing impurities from clogging the spraying system or affecting the uniformity of fertilization. The silicone sealing ring 304 is pressed between the annular magnetic base 301 and the recessed discharge port 102. Through elastic deformation, it fills the gap between the two, forming a tightly fitting sealing layer to prevent liquid leakage or impurities from bypassing the filter module and entering the discharge channel. The silicone material has good corrosion resistance and elasticity, and can adapt to the chemical characteristics and temperature changes of liquid fertilizer. It is not easy to age or fail after long-term use. The gradient interception mechanism of the layered filter ensures that suspended impurities in the liquid fertilizer are completely removed, improving the purity of the output liquid fertilizer.

[0141] Specifically, the angle adjustment device 504 includes:

[0142] Guide slide 5041 is fixed to the side wall of central fixed rod 501;

[0143] The annular rack 5042 is fixed at one end to the side wall of the folding wing rod 502, and the other end is movably mounted on the guide slide 5041;

[0144] The drive motor 5043 has a transmission gear 5044 on its output shaft that meshes with the ring rack 5042;

[0145] The angle adjustment device 504, through the coordinated design of gear and rack transmission and guide structure, achieves precise control of the unfolding angle of the folding wing rod 502, thereby flexibly adjusting the working width and coverage of the spreading mechanism. The guide slide 5041 is fixed to the side wall of the central fixed rod 501, providing a stable guide track for the movement of the ring rack 5042. Through the limiting effect of the guide slide 5041, it ensures that the ring rack 5042 moves along the predetermined trajectory during the unfolding or retraction of the folding wing rod 502, avoiding deviation or jamming. One end of 042 is fixed to the side wall of the folding wing rod 502, and the other end is movable on the guide slide 5041, forming a linkage between rotation and linear motion. The axis of the ring rack 5042 and the hinge point of the folding wing rod 502 are set coaxially. The drive motor 5043 serves as the core power source. Through the transmission gear 5044 on the output shaft, it meshes with the ring rack 5042 to convert electrical energy into mechanical energy. Through the gear and rack transmission system, the precise control of the unfolding angle of the folding wing rod 502 is realized, covering various working conditions from fully folded to maximum unfolding.

[0146] Specifically, the circulating anti-sedimentation system 4 also includes:

[0147] A spiral conveying pump 403 is located at the inlet end of the arc-shaped conveying pipe 401;

[0148] A conical suction head 404 is located at the bottom of the hollow tank 1 and is connected to the liquid inlet end of the arc-shaped conveying pipe 401.

[0149] The top spraying device 402 is an annular multi-hole spray pipe with the spray holes tilted towards the central axis of the hollow tank 1.

[0150] The circulating anti-sedimentation system 4, through a closed-loop flow path design, combined with the synergistic effect of the spiral conveying pump 403, the conical suction head 404, and the top spraying device 402, achieves continuous agitation and uniform distribution of the liquid inside the hollow tank 1, preventing fertilizer particles from settling and stratifying. The spiral conveying pump 403 is located at the inlet end of the arc-shaped conveying pipe 401, and its spiral propulsion structure efficiently extracts the liquid (including any potentially deposited suspended particles) from the bottom of the hollow tank 1 into the arc-shaped conveying pipe 401. The conical suction head 404 is located at the bottom of the hollow tank 1 and is connected to the inlet end of the arc-shaped conveying pipe 401; its conical structure can expand the suction... The suction range covers a large area at the bottom of the tank. The tapered shape reduces liquid flow resistance and prevents particles from accumulating near the suction port, reducing the risk of blockage and ensuring long-term stable operation of the system. The top spraying device 402 is an annular multi-hole nozzle with the nozzles tilted towards the central axis of the hollow tank 1. The tilted design of the nozzles allows the liquid to be sprayed in a centripetal direction, forming a downward flow from the top to the central axis, which forms a closed-loop circulation path with the liquid sucked from the bottom. The sprayed liquid is fully mixed with the suspension in the upper part of the tank, breaking up local static areas and preventing stratification caused by density differences, thus ensuring the uniformity of liquid composition.

[0151] Specifically, the guide slide 5041 includes:

[0152] The stainless steel main frame 5041a has a T-shaped guide groove inside, which is correspondingly set with the T-shaped guide block 5042a on the back of the annular rack 5042.

[0153] PTFE anti-wear bushing 5041b, embedded in the inner wall of T-shaped guide groove;

[0154] The tooth surface of the annular rack 5042 is provided with a molybdenum disulfide solid lubricating layer 5042b;

[0155] The guide slide 5041, through the coordinated design of the stainless steel main frame 5041a and the polytetrafluoroethylene anti-wear bushing 5041b, combined with the auxiliary effect of the molybdenum disulfide solid lubricating layer 5042b, provides stable guidance and low-friction support for the movement of the ring rack 5042, ensuring the efficient operation of the angle adjustment device 504. The stainless steel main frame 5041a, as the core structure of the guide slide 5041, provides high-strength mechanical support, ensuring that the guide slide 5041 maintains shape stability and resistance to deformation under complex working conditions. The frame has a T-shaped guide groove inside, forming a precise connection with the T-shaped guide block 5042a on the back of the ring rack 5042. In conjunction with this, a polytetrafluoroethylene (PTFE) bushing 5041b is embedded in the inner wall of the T-shaped guide groove. Utilizing its extremely low coefficient of friction, it significantly reduces the contact resistance between the guide block 5042a and the groove wall, thereby reducing energy loss during movement. The PTFE material has excellent wear resistance, which can absorb minor vibrations and impacts between the guide block and the groove wall, extending the service life of the slide and rack. The PTFE bushing is corrosion-resistant and high-temperature resistant, and can meet the long-term operating requirements of liquid fertilizer spreaders in humid and acidic / alkaline environments. The tooth surface of the annular rack 5042 is coated with a molybdenum disulfide solid lubricating layer 5042b, which provides a continuous lubrication effect through its layered crystal structure.

[0156] Specifically, the recessed discharge port 102 is a double-curvature anti-clogging structure, including:

[0157] The upper vortex guide section 102a has an inclined arc-shaped profile to guide the liquid to form a swirling flow.

[0158] The lower impurity accumulation section 102b is tapered and has a wear-resistant layer on its inner wall to accelerate the movement of sediment toward the slag discharge port.

[0159] The discharge pipe 103 and the slag discharge pipe 104 are located in sections with different curvatures.

[0160] The inlet of the discharge pipe 103 is located in the widest region of the vortex guide section 102a;

[0161] The inlet of the slag discharge pipe 104 is located in the lower middle part of the impurity accumulation section 102b, and the inlet direction forms an acute tangential angle with the conical surface;

[0162] The upper vortex guiding section 102a has an arc-shaped profile that tilts towards the central axis, causing the liquid entering the discharge port to form a swirling flow under the action of gravity and guidance. This enhances the fluidity of the liquid and reduces local sedimentation caused by stagnation or low flow rates. The centrifugal force of the swirling flow can push suspended particles outward, preventing them from accumulating at the discharge port inlet and reducing the risk of blockage. The lower impurity accumulation section 102b is a tapered cone that accelerates the liquid flow rate through geometric contraction, forcing sediments (such as undissolved particles and impurities) to slide down the cone surface and concentrate in the inlet area of ​​the slag discharge pipe 104. The inner wall is covered with a wear-resistant layer (such as a ceramic or polymer coating) to reduce wear caused by long-term scouring, extend the structural life, and reduce the probability of impurity adhesion. The discharge pipe 104... The inlet 3 is located in the widest area of ​​the vortex guiding section 102a, where the liquid flow rate is low and the impurity content is low, making it easy to discharge the fertilizer liquid directly into the tank and avoid impurity interference. The wide opening design reduces liquid flow resistance, ensuring smooth discharge during fertilization operations and adapting to high flow rate requirements to supply liquid fertilizer to the nozzles. The inlet of the slag discharge pipe 104 is located in the middle and lower part of the impurity accumulation section 102b, and the inlet direction forms an acute tangential angle with the conical surface. This design utilizes the centrifugal force of the swirling flow to guide the sediment along the conical surface to the slag discharge port, preventing impurities from flowing back into the liquid channel. The acute tangential angle enhances the collection efficiency of impurities, ensuring that undissolved particles and suspended matter are preferentially discharged through the slag discharge pipe 104, reducing contamination of the discharge pipe 103.

[0163] Specifically, the inverted triangular support 505 includes:

[0164] The bracket body 5051 has adjustment grooves on both sides of the inclined side;

[0165] The ceramic-coated roller assembly 5052 is installed in the adjustment groove via adjusting bolts;

[0166] The end of the folding wing rod 502 is provided with an overlapping protrusion 5022;

[0167] When the folding wing bar 502 is fully retracted:

[0168] The two folding wing rods 502 and the central fixed rod 501 form an isosceles triangular stable structure;

[0169] The slot at the end of the overlapping protrusion 5022 engages and locks with the protrusion.

[0170] The ceramic-coated roller assembly 5052 and the wear-resistant guide rail 5021 at the bottom of the folding wing rod 502 form a support and limiting contact surface;

[0171] The inverted triangular support frame 505, through the coordinated design of the support body, ceramic-coated roller assembly, and locking structure, provides stable support, dynamic guidance, and limiting functions for the deployment and retraction of the folding wing rod 502, ensuring the reliability and safety of the application mechanism during operation and transportation. The support body 5051 adopts an inverted triangular design with adjustment grooves on both sides to form a rigid frame, providing a stable support base for the bottom of the folding wing rod 502. The ceramic-coated roller assembly 5052 is installed in the adjustment groove by adjusting bolts, forming a sliding contact surface with the wear-resistant guide rail 5021 at the bottom of the folding wing rod 502, providing smooth guidance when the folding wing rod is deployed or retracted, reducing the risk of jamming. The ceramic coating on the roller surface has high hardness and low friction. The friction coefficient is reduced, decreasing the contact resistance with the guide rails and resisting corrosion and wear from liquid fertilizers, thus extending service life. When the folding wing rod 502 is fully retracted, the two wing rods and the central fixed rod 501 form an isosceles triangle. Geometric self-locking is achieved through the inverted triangular configuration of the bracket body 5051, eliminating the risk of shaking during transportation or non-operation. The slots and bosses at the ends of the overlapping protrusions 5022 interlock to form a mechanical lock, ensuring that the folding wing rods will not be accidentally unfolded due to external forces or vibrations during retraction, thus improving equipment safety. The wear-resistant guide rail 5021 is embedded in the bottom of the folding wing rod 502, forming a hard contact surface with the roller assembly 5052, providing stable limiting support during the movement of the folding wing rod 502, preventing deviation or excessive swaying.

[0172] The working process of this device is as follows:

[0173] 1. Preparation Phase

[0174] Equipment inspection and filling

[0175] Check the sealing of the hollow tank 1 and confirm that there is no blockage or leakage in the filling pipe 101, discharge pipe 103, and slag discharge pipe 104.

[0176] Liquid fertilizer is injected into the hollow tank 1 through the filling pipe 101. The anti-surge scouring component 2 is activated: the movable baffle 202 is linked with the positioning plate 201 through the central connecting rod 203 to suppress the sloshing of the liquid during the filling process and prevent initial sedimentation.

[0177] 2. Application phase

[0178] Liquid delivery and filtration purification

[0179] Function of the filtering module:

[0180] The liquid fertilizer passes through the coarse filter 302 of the multi-layer filtration module 3 to intercept large particulate impurities, and the fine filter 303 further intercepts tiny suspended impurities.

[0181] Synergistic effect of anti-wave scour component 2:

[0182] The reciprocating motion of the movable baffle 202 drives the multi-layer inclined flushing hole group 205 through the pressure conversion mechanism 207. The top flushing hole 2051 cleans impurities near the top wall of the tank, the bottom flushing hole 2052 cleans impurities far from the top wall, and the middle gradient hole 2053 covers the transition area, forming a directional flushing flow to prevent the adsorption of impurity particles.

[0183] Circulation and anti-sedimentation and dynamic adjustment

[0184] Circulation system operation:

[0185] The screw conveyor pump 403 starts and draws liquid from the bottom of the tank through the conical suction head 404, and then transports it to the top spraying device 402 through the arc-shaped conveying pipe 401.

[0186] The annular multi-hole nozzle 402 sprays liquid at an angle toward the central axis, forming a centripetal spiral flow, breaking up local static areas and maintaining liquid uniformity.

[0187] The anti-wave scour component 2 continues to function:

[0188] The movable baffle 202 moves back and forth continuously with the liquid sloshing as the vehicle moves. Through the layered buffering of the edge connecting rod group 204 and the damping control of the hydraulic damper 209, the liquid fluctuation is suppressed and the application stability is ensured.

[0189] Application mechanism deployment and operation

[0190] Angle adjustment device 504 is activated: drive motor 5043 drives transmission gear 5044 to rotate, and through the linkage of ring rack 5042 and guide slide 5041, drives folding wing rod 502 to unfold to the horizontal.

[0191] Liquid discharge and uniform application:

[0192] The inlet of the discharge pipe 103 is located in the widest area of ​​the vortex guide section 102a, through which the cleaning liquid is discharged.

[0193] The liquid is evenly sprayed onto the target area through the spray nozzle 503 at the end of the folding wing rod 502, forming a mulch fertilization.

[0194] 3. Impurity handling and work completion

[0195] Impurity separation and slag removal

[0196] Function of recessed discharge port 102:

[0197] Undissolved particles and metallic impurities are concentrated at the inlet of the slag discharge pipe 104 through the impurity aggregation section 102b of the recessed discharge port 102.

[0198] Distribution organization collection

[0199] After the operation is completed, the drive motor 5043 reverses and the folding wing rod 502 is stored along the adjustment groove of the inverted triangular support frame 505.

[0200] The slots of the overlapping protrusion 5022 engage and lock with the protrusion, forming a stable isosceles triangle structure to ensure the mechanism is stable after storage.

[0201] Dynamic stability guarantee:

[0202] The ceramic-coated roller assembly 5052 of the inverted triangular support 505 works in conjunction with the wear-resistant guide rail 5021 to ensure stable operation of the mechanism during storage.

[0203] Equipment cleaning and maintenance

[0204] Clean the coarse / fine filter screens 302 / 303 of the multi-layer filter module 3 to remove residual impurities.

[0205] Maintenance of anti-surge assembly 2: Check the elastic reset mechanism (compression spring 208) and hydraulic damper 209 of the movable baffle 202 to ensure that they function properly before the next operation.

[0206] 4. Transportation and Transfer

[0207] Shut down the power system

[0208] Turn off the screw conveyor pump 403, drive motor 5043 and hydraulic damper 209, and disconnect the power supply to the equipment.

[0209] Transportation preparation

[0210] Confirm that the locking structure of the inverted triangular support 505 completely secures the folding wing rod 502 to prevent it from shaking during transportation.

[0211] Check that the discharge pipe 103 and the slag discharge pipe 104 are closed to prevent liquid leakage.

[0212] Transfer to the next work site

[0213] Secure the device to the transport vehicle and proceed to the next work area, repeating the above process.

[0214] 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 process, method, article, or apparatus.

[0215] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A liquid fertilizer spreading vehicle, characterized in that, include: Hollow tank (1): The front end is equipped with an injection pipe (101) for injecting liquid fertilizer; A recessed discharge port (102) is provided on the inner bottom of the rear side, which is connected through a diversion channel: The discharge pipe (103) extends to the rear of the vehicle body for fertilization operations; Slag discharge pipe (104) leads to impurity collection container; Anti-wave scouring components (2): The plate group structure distributed at intervals along the axis of the hollow tank (1) includes a circular positioning plate (201) and movable baffles (202) symmetrically arranged on both sides of the circular positioning plate (201), which are used to suppress liquid sloshing and directional flushing of sediment in the hollow tank (1); Multi-layer filter module (3): It can be detachably installed at the top inlet of the recessed discharge port (102) to intercept suspended solid impurities; Circulating anti-sedimentation system (4): The system includes an arc-shaped conveying pipe (401) connecting the bottom and top of the hollow tank (1) and a top spraying device (402), forming a closed-loop flow path. Three-section folding application mechanism (5): It includes a central fixed rod (501) fixed to the rear of the vehicle body, folding wing rods (502) symmetrically hinged to both sides of the rod, spray nozzles (503) evenly distributed on the side walls of the folding wing rods (502), and an angle adjustment device (504) for driving the unfolding angle. The top of the central fixed rod (501) is provided with an inverted triangular support bracket (505), whose two sides are matched with the guide rail structure on the upper surface of the folding wing rod (502) to form a rigid support in the storage state. The circular positioning plate (201) of the anti-wave scouring component (2) is fixedly connected to the inner wall of the hollow tank (1); The movable baffle (202) is dynamically connected to the circular positioning plate (201) through the following structure: The central connecting rod (203) passes through the central groove of the two plates to limit lateral displacement; The edge connecting rod group (204) is distributed in a circumferential array, including a top small-diameter rod (2041), an intermediate transition rod (2042), and a bottom large-diameter rod (2043) with increasing aperture from top to bottom. Each connecting rod is provided with a compression spring (208) at both ends, forming an elastic reset mechanism for the movable baffle (202); Hydraulic dampers (209) are evenly distributed between the circular positioning plate (201) and the movable baffle (202); The circular positioning plate (201) is provided with: A multi-layered inclined scouring hole group (205), distributed along the height direction, includes: Top flushing hole (2051) is inclined towards the near end of the inner wall of the hollow tank (1); Bottom flushing hole (2052) is inclined towards the far end of the inner wall of the hollow tank (1); The intermediate gradient hole (2053) has an angle that changes continuously from top to bottom. The pressure conversion channel has an inlet end connected to the cavity of the arc-shaped piston seat assembly (2070) and an outlet end branched to connect to the multi-layer inclined flushing hole assembly (205), with a base block (206) inside. The pressure conversion mechanism (207) connects to the movable baffle (202) through the piston rod (2071) passing through the circular positioning plate (201) to form a dynamic pressure transmission path; The pressure conversion mechanism (207) is independently disposed in the upper part of the circular positioning plate (201), and includes: The arc-shaped piston seat assembly (2070) is evenly distributed circumferentially along the upper part of the circular positioning plate (201); The piston rod (2071) passes through and is movably installed in the arc-shaped piston seat assembly (2070), and its two ends are fixed to the side walls of the movable baffles (202) on both sides; The first end of the linkage cable (2073) is connected to the middle of the piston rod (2071), the middle section is wound around the corner wheel (2074) fixed to the inner wall of the tank, and the end is connected to the force-bearing end of the piston head (2075); The return spring (2072) is sleeved on the outside of the linkage cable (2073), with one end abutting the piston head (2075) and the other end fixed to the base block (206).

2. The liquid fertilizer spreading vehicle according to claim 1, characterized in that: The multi-layer filtration module (3) includes: A ring-shaped magnetic base (301) with an embedded array of neodymium iron boron permanent magnets (305); A coarse filter (302) and a fine filter (303) are stacked and inserted into an annular magnetic base (301). The mesh size of the fine filter (303) is 1 / 3 to 1 / 5 of that of the coarse filter (302). A silicone sealing ring (304) is pressed between the annular magnetic base (301) and the recessed discharge port (102) to form a radial seal.

3. A liquid fertilizer spreading vehicle according to claim 1, characterized in that: The angle adjustment device (504) includes: The guide slide (5041) is fixed to the side wall of the central fixed rod (501); The ring rack (5042) is fixed at one end to the side wall of the folding wing rod (502) and movably mounted on the guide slide (5041) at the other end; The drive motor (5043) has a transmission gear (5044) on its output shaft that meshes with a ring rack (5042).

4. A liquid fertilizer spreading vehicle according to claim 1, characterized in that: The circulating anti-sedimentation system (4) also includes: A spiral conveying pump (403) is installed at the inlet end of the arc-shaped conveying pipe (401); A conical suction head (404) is located at the bottom of the hollow tank (1) and connected to the inlet end of the arc-shaped conveying pipe (401); The top spraying device (402) is an annular multi-hole spray pipe with the spray holes tilted towards the central axis of the hollow tank (1).

5. A liquid fertilizer spreading vehicle according to claim 3, characterized in that: The guide slide (5041) includes: The stainless steel main frame (5041a) has a T-shaped guide groove inside, which is correspondingly set with the T-shaped guide block (5042a) on the back of the annular rack (5042); Polytetrafluoroethylene anti-wear bushing (5041b) is embedded in the inner wall of the T-shaped guide groove; The tooth surface of the annular rack (5042) is provided with a molybdenum disulfide solid lubricant layer (5042b).

6. A liquid fertilizer spreading vehicle according to claim 1, characterized in that: The recessed discharge port (102) is a double-curvature anti-clogging structure, including: The upper vortex guide section (102a) has an inclined arc profile to guide the liquid to form a swirling flow. The lower impurity accumulation section (102b) is tapered and has a wear-resistant layer on its inner wall to accelerate the movement of sediment toward the slag discharge port. The discharge pipe (103) and the slag discharge pipe (104) are located in sections with different curvatures: The inlet of the discharge pipe (103) is located in the widest region of the vortex guide section (102a); The inlet of the slag discharge pipe (104) is located in the lower middle part of the impurity accumulation section (102b), and the inlet direction forms an acute tangential angle with the conical surface.

7. A liquid fertilizer spreading vehicle according to claim 1, characterized in that: The inverted triangular support (505) includes: The bracket body (5051) has adjustment grooves on both sides of the inclined side; The ceramic-coated roller assembly (5052) is installed in the adjustment groove via adjusting bolts; The end of the folding wing rod (502) is provided with an overlapping protrusion (5022); When the folding wing rod (502) is fully retracted: The two folding wing rods (502) and the central fixed rod (501) form an isosceles triangular stable structure; The slot at the end of the overlapping protrusion (5022) engages and locks with the protrusion; The ceramic-coated roller assembly (5052) and the wear-resistant guide rail (5021) at the bottom of the folding wing rod (502) form a support and limiting contact surface.

Images