Adjustable organic fertilizer spreader

Abstract

The present application relates to the technical field of agricultural equipment, and discloses an adjustable organic fertilizer spreading machine, which comprises an organic fertilizer box serving as a storage box body of liquid organic fertilizer, a transfer disc symmetrically and movably arranged at a position below the rear side of the organic fertilizer box and serving as a transfer area of the fertilizer, and a suction mechanism connected with the transfer disc and used for sucking the internal fertilizer and conveying the same to the transfer disc. The device supports two modes of horizontal spreading and vertical spreading, one-key switching, servo motor driving gear and rack system, closed-loop control of the transfer disc rotation, quick switching of the spreading mechanism between horizontal distribution and vertical directional fertilization, horizontal spreading adaptation to field uniform fertilization, and adjustable covering width of 3-15 meters. The present application has the characteristics of strong practicability and strong flexible adaptability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of agricultural equipment, in particular to an adjustable organic fertilizer spreading machine. BACKGROUND

[0002] The conventional liquid organic fertilizer spreading machine mainly takes fixed spray bar and simple detachable spray bar as the core structure, and its operation logic is that the fertilizer is delivered to the spray bar by a liquid pump and sprayed through fixed nozzles or a small number of adjustable spray heads. Typical designs include: fixed spray bar type spreading machine: an integrated metal spray bar is adopted, the distance between spray heads is fixed (such as 1.5-2.0 meters), and the coverage width is limited by the length of the spray bar (usually 3-10 meters). Such equipment has simple structure but poor flexibility, and cannot adapt to different field sizes and terrain conditions; segmented spray bar spreading machine: the spray bar is connected by multiple detachable segments through flanges or clamps, and the spreading width is adjusted by increasing or decreasing the number of segments. Although this type of equipment supports width adjustment, the disassembly process relies on bolt fastening or buckle locking, and each adjustment requires stopping and disassembling, which takes a long time, and the sealing relies on the accuracy of manual operation, which is easy to leak due to vibration or aging; hose type spreading machine: multiple independent spray heads are connected by a hose, and spreading is completed by dragging the hose. This design has high flexibility, but the hose is easy to entangle and wear, and the flow distribution is uneven (the end pressure loss reaches 20%-30%). The above-mentioned conventional equipment has low modularity, low adjustment efficiency and poor sealing reliability, which cannot meet the needs of modern precision agriculture for spreading efficiency and flexibility.

[0003] Taking an existing suspension type fertilizer spreader as an example, its spreading width is fixed at 5 meters, and if a larger area needs to be covered, an expansion module needs to be additionally installed, but the expansion process requires stopping and disassembling the original parts, which takes more than 30 minutes. At the same time, when switching between horizontal and vertical modes, the device relies on manual adjustment of the angle of the spray head, which is tedious and difficult to ensure accuracy. Such problems are particularly prominent in large-scale agriculture, resulting in low operation efficiency, increased labor costs, and possible uneven fertilization affecting crop growth.

[0004] In summary, the conventional organic fertilizer spreading machine has obvious shortcomings in flexibility, sealing and operation convenience, and cannot meet the needs of modern agriculture for efficient and precise fertilization. The present application solves the above technical problems by the innovative structure of multi-section detachable single segment design and installation, and sealing when connected and disconnected, providing a better solution for organic fertilizer application. SUMMARY

[0005] The present application aims to provide an adjustable organic fertilizer spreading machine to solve the problems in the background art.

[0006] In order to solve the above technical problems, the present application provides the following technical scheme: an adjustable organic fertilizer spreading machine, comprising:

[0007] The organic fertilizer tank is used as a storage tank for liquid organic fertilizer.

[0008] The transfer disc is symmetrically movably arranged at a position below the rear side of the organic fertilizer tank and is used as a transfer area for the fertilizer.

[0009] The suction mechanism is connected to the transfer disc, sucks the internal fertilizer, and delivers the fertilizer to the transfer disc.

[0010] The multi-section type spreading mechanism is composed of a plurality of detachable spreading single sections, is arranged at one side of the transfer disc, and realizes linear adjustment of the spreading width through series combination of the detachable spreading single sections.

[0011] The angle adjusting mechanism is correspondingly arranged with the transfer disc, so that the spreading mechanism is switched between the horizontal spreading position and the vertical storage position.

[0012] The stirring mechanism is arranged at a central position in the organic fertilizer tank and stirs the liquid organic fertilizer.

[0013] The residual amount monitoring mechanism monitors the residual amount of the organic fertilizer in the organic fertilizer tank in real time and is electrically connected with the suction mechanism, so that the suction mechanism is automatically closed when the liquid level is lower than a threshold value.

[0014] According to the above technical solution, the transfer disc comprises:

[0015] The hollow guide ring is fixedly installed at a position below the side wall of the organic fertilizer tank at one end and is fixedly installed with an outer edge guide ring at the other end, and the side wall is uniformly distributed with hollow heat dissipation openings.

[0016] The movable disc body is in a whole cylindrical shape, is movably installed at the end of the hollow guide ring, is limited by the outer edge guide ring, is internally provided with a flow-through channel, and is fixedly installed with a communication pipe one at one end of the flow-through channel and is provided with a controllable sealing port one at the other end, and is communicated with the spreading single section.

[0017] According to the above technical solution, the suction mechanism comprises:

[0018] The communication pipe two is arranged through the side wall of the organic fertilizer tank, is communicated to the inside of the organic fertilizer tank at one end, and is movably connected with the communication pipe one at the other end through a movable head.

[0019] The corrosion-resistant diaphragm pump is fixedly arranged at the side wall of the organic fertilizer tank and is arranged on the communication pipe two to suck and deliver the organic fertilizer.

[0020] The filter screen is magnetically installed in the embedded groove of the inner wall of the organic fertilizer tank through a magnet one, is arranged at the end of the communication pipe two, filters the passing organic fertilizer, and is arranged in flush with the inner wall surface of the organic fertilizer tank.

[0021] According to the above technical solution, the spreading single section comprises:

[0022] The through-flowing cylinder is hollow and cylindrical, and the organic fertilizer is stored and circulated in the through-flowing cylinder.

[0023] The spraying head is fixedly arranged at the central position of the lower end of the through-flowing cylinder, and uniformly sprays the organic fertilizer.

[0024] The one-way feeding head is arranged at the head of the through-flowing cylinder, and feeds the organic fertilizer in one direction.

[0025] The controllable sealing port two is arranged at the tail of the spraying single section, and has the same structure and similar function as the controllable sealing port one.

[0026] According to the technical scheme, the elastic sealing member comprises:

[0027] The tail connecting block is fixedly arranged at the tail of the through-flowing cylinder, and a connecting groove is arranged at the end away from the through-flowing cylinder.

[0028] The edge guide rod is movably arranged at the edge of the tail connecting block, and one end of the edge guide rod extends into the through-flowing cylinder and is fixedly arranged with a hollow sealing ball.

[0029] The fixed ring is movably arranged in the edge movable groove in the through-flowing cylinder, and is fixedly arranged on the edge guide rod.

[0030] The first telescopic spring is arranged outside the edge guide rod and at the end of the fixed ring away from the through-flowing cylinder.

[0031] The trigger mechanism comprises:

[0032] The abutting rod is fixedly arranged at the other end of the edge guide rod, and the end of the abutting rod is flush with the end of the tail connecting block.

[0033] The abutting groove is arranged on the one-way feeding head, and is arranged corresponding to the abutting rod and has a shorter groove depth than the length of the abutting rod.

[0034] According to the technical scheme, the elastic sealing member further comprises:

[0035] The positioning block is arranged at the central position in the through-flowing cylinder.

[0036] The positioning rods are circumferentially and uniformly distributed on the side wall of the positioning block, and the ends of the positioning rods are fixedly arranged on the inner wall of the through-flowing cylinder.

[0037] The movable plug is movably arranged in the middle of the positioning block and is fixedly connected with the hollow sealing ball at one end;

[0038] The telescopic spring two is sleeved outside the movable plug and is abutted with the positioning block at one end and is abutted with the hollow sealing ball at the other end.

[0039] According to the above technical scheme, the multi-point locking piece comprises:

[0040] The angle locking block is movably installed in the placement groove of the peripheral wall of the tail connecting block;

[0041] The angle locking rod is fixedly arranged at the central position of the angle locking block, one end of the angle locking rod penetrates through the inner wall of the tail connecting block and is one-to-one corresponding with the angle locking groove of the side wall of the one-way feeding head, a quick inclined plug-in surface is arranged at the end of the angle locking rod, which is used for quick plug-in of the one-way feeding head, and the other end of the angle locking rod is fixedly installed with a connecting rope;

[0042] The switch control ring is rotatably sleeved in the inner recess of the outer wall of the tail connecting block, and the inner wall is fixedly connected with the end of the connecting rope;

[0043] The telescopic spring three is sleeved outside the outer wall of the angle locking rod and is arranged at one end of the angle locking block adjacent to the switch control ring.

[0044] According to the above technical scheme, the angle adjusting mechanism comprises:

[0045] The servo motor one is fixedly installed on the outer wall of the organic fertilizer box;

[0046] The gear is fixedly installed on the output end of the servo motor one;

[0047] The annular rack is fixedly installed on the side wall of the transfer disc, and the gear and the annular rack are meshingly connected.

[0048] According to the above technical scheme, the stirring mechanism comprises:

[0049] The servo motor two is fixedly installed at the central position of the upper end of the organic fertilizer box;

[0050] The central stirring shaft is movably installed in the organic fertilizer box and is fixedly connected with the output end of the servo motor two through the coupling at the top;

[0051] The back-bending stirring rod is uniformly fixed on the side wall of the central stirring shaft through bolts and is linearly arranged along the axial direction of the central stirring shaft.

[0052] According to the above technical scheme, the residual amount monitoring mechanism comprises:

[0053] The vertical rod is fixedly installed in the organic fertilizer box;

[0054] The floating plate is movably sleeved on the stand;

[0055] The piezoresistive liquid level sensor is inlaidly installed on the floating plate and feeds back the liquid level height to the display screen of the cab in real time;

[0056] The magnet two is inlaidly installed on the floating plate;

[0057] The reed tube is inlaidly installed at the top position of the inner wall of the organic fertilizer tank;

[0058] The buzzer alarm is fixedly installed at the top position of the outer wall of the organic fertilizer tank and is electrically connected with the reed tube through wires.

[0059] Compared with the prior art, the application has the beneficial effects that:

[0060] (1) efficient spreading and precise control: the built-in flow meter monitors the fertilizer flow in real time, and the central controller is linked to the suction pump to adjust the output power through frequency conversion, so as to ensure that the fertilizer amount per unit area is constant, realize dynamic regulation of the flow, accurately monitor the liquid level in the organic fertilizer tank through the piezoresistive sensor and the floating plate system, avoid idle loss, monitor the liquid level in real time, trigger the buzzer alarm at low liquid level and link to close the suction pump, prevent equipment damage, save energy, the excess monitoring mechanism is linked to the suction mechanism to realize low liquid level alarm and automatic shutdown protection, avoid idle damage to the equipment and reduce maintenance cost;

[0061] (2) multi-mode spreading: supporting horizontal spreading and vertical spreading, one-key switching, servo motor driving gear rack system, closed-loop control of rotating disc, realizing quick switching of the spreading mechanism between horizontal distribution and vertical directional fertilization, horizontal spreading is suitable for field uniform fertilization, the coverage width is adjustable from 3-15 meters, and vertical spreading is suitable for fruit tree ring fertilization and high stalk crop topdressing, covering the middle and lower parts of the stem, reducing the number of leaf topdressing operations, and having strong scene adaptability;

[0062] (3) flexible adaptation demand: detachable single section design, realizing linear adjustment of the spreading width (3-15 meters) through series combination, adapting to different crop row spacing and field requirements, and realizing "installation connection and disconnection sealing" through the cooperation of the elastic sealing element (double spring driving centering system) and the multi-point locking element, reducing manual operation time and improving operation continuity;

[0063] (4) quick maintenance: the multi-point locking element adopts a wedge-shaped self-locking structure, and the installation and disassembly of the spreading single section can be completed by one hand, the time consumption is ≤30 seconds / unit, the maintenance efficiency is significantly improved, the filter screen 34 is supported to be disassembled and assembled without tools, the cleaning period is prolonged from 2 hours of the traditional fixed filter screen to 8 hours, the frequency of manual intervention is reduced, the 0.5mm-3mm aperture can be quickly replaced, and different types of organic fertilizers with different solid contents are adapted;

[0064] (5) Wide application scenarios: single section spreading is connected through a quick interface, and the spreading width is linearly adjustable, which is suitable for different farmland scales and crop needs. The horizontal spreading mode is suitable for large-area fertilization of crops such as wheat and corn, with uniform coverage and high efficiency. The vertical spreading mode is suitable for directional fertilization of fruit tree roots, reducing fertilizer loss and promoting crop absorption. The vertical spraying covers the middle and lower parts of the stems, reducing the number of leaf surface topdressing operations, saving manpower and time, and the three-dimensional fertilization is suitable for fruit tree ring fertilization and greenhouse vegetable topdressing, reducing soil pollution and improving crop growth environment. BRIEF DESCRIPTION OF DRAWINGS

[0065] The accompanying drawings are included to provide a further understanding of the application, and constitute a part of the specification, illustrate the application, and are used to explain the application together with the embodiments of the application, and do not constitute a limitation on the application. In the drawings:

[0066] Figure 1 is a first perspective view of the application;

[0067] Figure 2 is a second perspective view of the application;

[0068] Figure 3 is a third perspective view of the application;

[0069] Figure 4 is a fourth perspective view of the application;

[0070] Figure 5 is a first partial perspective view of the application;

[0071] Figure 6 is a second partial perspective view of the application;

[0072] Figure 7 is a third partial perspective view of the application;

[0073] Figure 8 is a fourth partial perspective view of the application;

[0074] Figure 9 is a fifth partial perspective view of the application;

[0075] Figure 10 is a sixth partial perspective view of the application;

[0076] Figure 11 is an enlarged view of A in the application Figure 10

[0077] ​In the figure: 1-organic fertilizer box, 11-embedded groove, 2-transit disc, 21-hollow guide ring, 211-outer edge guide ring, 212-hollow heat dissipation port, 22-movable disc body, 23-communication pipe one, 3-suction mechanism, 31-communication pipe two, 32-movable head, 33-corrosion-resistant diaphragm pump, 34-filter screen, 35-magnet one, 4-spreading single section, 41-flowing cylinder, 411-spherical sealing groove, 412-edge movable groove, 413-flow meter, 42-spreading spray head, 421-solenoid valve, 43-one-way feeding head, 431-one-way valve, 432-connection groove, 433-angle locking groove, 44-elastic sealing piece, 441-tail connecting block, 442-edge guide rod, 443-hollow sealing ball, 444-fixing ring, 445-elastic spring one, 446-positioning block, 447-positioning rod, 448-movable bolt, 449-elastic spring two, 45-triggering mechanism, 451-butting rod, 452-butting groove, 5-angle adjusting mechanism, 51-servo motor one, 52-gear, 53-annular rack, 6-stirring mechanism, 61-servo motor two, 62-central stirring shaft, 63-back-bending stirring rod, 7-amount monitoring mechanism, 71-stand rod, 72-floating plate, 73-pressure resistance type liquid level sensor, 74-magnet two, 75-reed, 76-buzzing alarm, 8-multipoint locking piece, 81-angle locking block, 82-angle locking rod, 821-quickly tilting plug-in surface, 83-connection rope, 84-switch control ring, 85-elastic spring three. DETAILED DESCRIPTION

[0078] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0079] Please refer to Figures 1-11 The present application provides a technical solution: an adjustable organic fertilizer spreading machine, comprising:

[0080] The organic fertilizer box 1 is used as a storage box for liquid organic fertilizer.

[0081] The transit disc 2 is symmetrically movably arranged at the lower position behind the organic fertilizer box 1, and is used as a transit area for the fertilizer.

[0082] The suction mechanism 3 is connected with the transit disc 2, and is used for sucking the internal fertilizer and conveying it to the transit disc 2.

[0083] The multi-section spreading mechanism is composed of a plurality of detachable spreading single sections 4, is arranged on one side of the transfer disc 2, and realizes linear adjustment of the spreading width through series combination of the detachable spreading single sections 4.

[0084] The angle adjusting mechanism 5 is arranged in correspondence with the transfer disc 2, so that the spreading mechanism is switched between the horizontal spreading position and the vertical storage position.

[0085] The stirring mechanism 6 is arranged at a central position in the organic fertilizer tank 1 and stirs the liquid organic fertilizer.

[0086] The residual amount monitoring mechanism 7 monitors the residual amount of the organic fertilizer in the organic fertilizer tank 1 in real time and is electrically connected with the suction mechanism 3, so that the suction mechanism 3 is automatically turned off when the liquid level is lower than a threshold value.

[0087] The device is an intelligent agricultural equipment designed for efficient spreading of liquid organic fertilizer. The organic fertilizer tank 1 stores liquid organic fertilizer. The bottom of the organic fertilizer tank 1 is provided with industrial universal wheels (such as rubber solid tires) with a brake function, which are suitable for various terrains such as mud and slopes. When a tractor is used for traction, zero steering resistance is realized, the moving energy consumption is reduced, a conical feed bin is arranged at the top, and a vibration auxiliary device (optional) is used to ensure that high-viscosity liquid fertilizer is fed without residue. The sealing cover is provided with a silica gel sealing ring to prevent volatilization (to avoid ammonia gas escaping) and rain and dust. The organic fertilizer tank 1 is made of polyethylene (PE) or glass fiber reinforced plastic (FRP), and the internal flow channel is polished to reduce fertilizer adhesion. The transfer disc 2 is symmetrically and movably arranged below the rear of the organic fertilizer tank 1 and serves as a temporary storage and distribution hub for the fertilizer. The transfer disc 2 cooperates with the suction mechanism 3 to dynamically distribute the flow to adapt to different spreading requirements. The suction mechanism 3 adjusts the suction power according to the residual amount monitoring data to avoid idling. The stirring mechanism 6 periodically rotates forward and backward to prevent the organic fertilizer from stratifying and depositing, especially for high-viscosity liquids. The device has multiple mode spreading operation modes, including a horizontal spreading mode and a vertical spreading mode. The spreading mechanism is switched between the horizontal spreading position and the vertical storage position through the angle adjusting mechanism 5. The vertical storage position can save space for field movement and can also be used for vertical spreading. In the horizontal spreading mode, the spreading single sections 4 are connected in series, and the spray head is selected to be a rotatable type to support wide (3-15 meters) continuous adjustment and adapt to strip planting of field crops. After one-key switching, the spreading mechanism is changed from horizontal to vertical, and three-dimensional fertilization of the leaves and roots of crops such as corn and sugarcane is realized through vertical spraying. The vertical spraying can cover the middle and lower parts of the stems of crops (traditional equipment can only spray the ground), reducing the number of leaf fertilization operations and being suitable for fruit tree ring fertilization, corn fertilization and other scenes.

[0088] Specifically, the transfer disc 2 includes:

[0089] The hollow guide ring 21 is fixedly installed at the lower side of the side wall of the organic fertilizer box 1, and the outer edge guide ring 211 is fixedly installed at the other end. The side wall is uniformly provided with the hollow heat dissipation port 212.

[0090] The movable disc body 22 is in the shape of a cylinder, is movably installed at the end of the hollow guide ring 21, is limited by the outer edge guide ring 211, and is internally provided with a flow channel. One end of the flow channel is fixedly provided with the communication pipe one 23, and the other end is provided with a controllable sealing port one and is communicated with the spreading single section 4.

[0091] The hollow guide ring 21 is fixedly installed at the lower side of the side wall of the organic fertilizer box 1, is connected to the movable disc body 22, provides a guide function, ensures that the movable disc body 22 is stable during operation, and simultaneously realizes effective heat dissipation through the uniformly distributed hollow heat dissipation port 212, prevents overheating of the equipment, and reduces the overall weight through the hollow design, increases the stability of the structure, and ensures stable operation in different working environments. The movable disc body 22 is in the shape of a cylinder, is movably installed at the end of the hollow guide ring 21, is limited by the outer edge guide ring 211, prevents deviation from the track, and is internally provided with a flow channel. One end of the flow channel is connected to the communication pipe one 23, the communication pipe one 23 is fixedly installed at one end of the flow channel of the movable disc body 22, is responsible for conveying liquid fertilizer from the organic fertilizer box 1 to the transfer disc 2, the other end is provided with a controllable sealing port one and is communicated with the spreading single section 4. Under the driving of the suction mechanism 3, the liquid fertilizer is conveyed to the spreading single section 4 through the flow channel, realizes precise spreading, the flexibility of the movable disc body 22 enables it to adapt to different working requirements, adjusts the spreading angle and width, the controllable sealing port one is located at the other end of the movable disc body 22 and is communicated with the spreading single section 4, is responsible for controlling the output of the liquid fertilizer, and can realize the use effect of being connected when installed and being sealed when disconnected.

[0092] Specifically, the suction mechanism 3 comprises:

[0093] The communication pipe two 31 is arranged through the side wall of the organic fertilizer box 1, is communicated to the inside of the organic fertilizer box 1 at one end, and is movably connected to the communication pipe one 23 at the other end through the movable head 32.

[0094] The corrosion-resistant diaphragm pump 33 is fixedly arranged on the side wall of the organic fertilizer box 1 and arranged on the communication pipe two 31, and is responsible for extracting and conveying the organic fertilizer.

[0095] The filter screen 34 is magnetically installed in the embedded groove 11 of the inner wall of the organic fertilizer box 1 through the magnet one 35, is arranged at the end of the communication pipe two 31, filters the flowing organic fertilizer, and the outer wall surface of the filter screen 34 is flushly arranged with the inner wall surface of the organic fertilizer box 1.

[0096] The communication pipe two 31 penetrates the side wall of the organic fertilizer tank 1, one end of which is deep into the inside of the tank (close to the bottom to avoid suction residue), and the other end is dynamically connected with the communication pipe one 23 of the transfer disc 2 through the movable head 32. The corrosion-resistant diaphragm pump 33 is selected from a pneumatic or electric diaphragm pump, which is suitable for high-viscosity liquids (such as organic fertilizers containing solid particles) and is linked with the liquid level monitoring mechanism 7. The pump speed is automatically adjusted (frequency conversion control) according to the liquid level. When the liquid level is low, the pump runs at a low frequency to prevent idling. When the liquid level is sufficient, the pump runs at full speed. The filter screen 34 is attracted to the embedded groove 11 in the inner wall of the organic fertilizer tank 1 by the magnet one 35. The embedded groove has the same depth as the thickness of the filter screen, ensuring that the screen surface is flush with the inner wall of the tank to avoid the formation of accumulated material dead angles. The filter screen 34 can be quickly replaced with different pore sizes (such as 0.5mm fine filtration or 3mm coarse filtration) to adapt to different types of organic fertilizers with different solid contents. At the same time, the magnetically attracted filter screen supports tool-free disassembly and assembly, and the cleaning cycle is extended from 2 hours for traditional fixed filter screens to 8 hours, reducing the frequency of manual intervention.

[0097] Specifically, the scattering single section 4 includes:

[0098] The flow-through cylinder 41 is a hollow cylinder that flows through the cylinder and stores organic fertilizer. A flow meter 413 is arranged at the central position of the flow-through cylinder 41.

[0099] The scattering nozzle 42 is fixedly arranged at the lower end of the flow-through cylinder 41 to uniformly scatter the organic fertilizer. An electromagnetic valve 421 is arranged at the front end to control the opening and closing.

[0100] The one-way feeding head 43 is arranged at the head of the flow-through cylinder 41 to feed the organic fertilizer in one direction. A one-way valve 431 is embedded and installed at the end to allow fluid to flow in only one direction.

[0101] The controllable sealing port two is arranged at the tail of the scattering single section 4 and has the same structure and similar function as the controllable sealing port one. It includes an elastic sealing element 44 and a triggering mechanism 45. Under normal circumstances, the elastic sealing element 44 is kept closed by the pre-tightening force. When the adjacent scattering single section 4 is connected, the triggering mechanism 45 is driven by mechanical extrusion to displace the elastic sealing element 44, realizing the through connection of the flow passage.

[0102] The through-cylinder 41 is designed in a hollow cylindrical shape (diameter 80-100 mm, length 1-2 m), the inner wall is polished to Ra≤0.8 μm to reduce flow resistance and fertilizer residue, the flow meter 413 is selected from an electromagnetic flow meter or an ultrasonic flow meter, the electromagnetic or ultrasonic flow meter has no moving parts and is less affected by high-viscosity or solid-particle-containing organic fertilizer, has better long-term stability than a traditional mechanical flow meter (such as a turbine flow meter), can monitor in real time and upload data to a central controller through a wireless module, and can regulate the flow by linking a corrosion-resistant diaphragm pump 33, the spraying head 42 is selected from a model with a rotatable spray core, the horizontal mode is set to a wide-angle atomizing spray head suitable for field uniform distribution, and the vertical mode is replaced with a narrow-gap straight jet spray head for directional fertilization of high-stalk crops, the one-way feeding head 43 only allows liquid to flow from upstream through the through-cylinder 41 into the unit to prevent reverse flow when multiple sections are connected in series, each spraying section 4 is equipped with a dedicated electromagnetic valve 421 at the front end of the spraying head 42, supports independent on-off instruction receiving and execution, adopts a distributed control architecture, each electromagnetic valve is connected to the central controller through a CAN bus or a wireless communication module, supports single-section independent operation or grouped control, when the working area needs to be partially closed (such as encountering a fertilized area, an obstacle, or a sensitive crop), the central controller sends a closing instruction to the target section, and the electromagnetic valve 421 cuts off the flow passage within 0.2 seconds to achieve precise spraying, and each spraying section 4 is an independent control unit, avoiding the "one-size-fits-all" problem of traditional centralized valve control and significantly improving flexibility.

[0103] Specifically, the elastic sealing member 44 includes:

[0104] The tail connecting block 441 is fixedly installed at the tail of the through-cylinder 41, a connecting groove 432 is formed at the end away from the through-cylinder 41, and the one-way feeding head 43 is fixedly arranged in the connecting groove 432 through the multi-point locking member 8;

[0105] The edge guide rod 442 is movably arranged at the edge of the tail connecting block 441, one end extends into the through-cylinder 41 and is fixedly installed with the hollow sealing ball 443, and the hollow sealing ball 443 is fittedly installed in the spherical sealing groove 411 in the through-cylinder 41;

[0106] The fixed ring 444 is movably installed in the edge movable groove 412 in the through-cylinder 41 and is fixedly sleeved on the edge guide rod 442;

[0107] The first telescopic spring 445 is sleeved on the outside of the edge guide rod 442 and is arranged at one end of the fixed ring 444 adjacent to the through-cylinder 41, and when the first telescopic spring 445 is compressed, the hollow sealing ball 443 is triggered to be separated from the spherical sealing groove 411;

[0108] The trigger mechanism 45 includes:

[0109] The docking rod 451 is fixedly installed at the other end of the edge guide rod 442, and the end is arranged flush with the end of the tail connecting block 441;

[0110] The docking groove 452 is arranged on the one-way feeding head 43, and the groove depth is shorter than the length of the docking rod 451;

[0111] The tail connecting block 441 is fixed to the tail of the flow-through cylinder 41 by bolts or welding, and serves as the base of the sealing assembly. The connecting groove 432 at the end of the tail connecting block 441 provides a precise insertion space for the one-way feeding head 43, ensuring centration. The edge guide rod 442 and the tail connecting block 441 are connected by a linear bearing or a graphite lubricating sleeve, ensuring low friction in axial movement. The end of the edge guide rod 442 is hard connected with the hollow sealing ball 443 by threads, preventing loosening. When the adjacent spraying single section approaches, the docking rod 451 is pressed to push the edge guide rod 442 to move axially until the hollow sealing ball 443 completely leaves the spherical sealing groove 411. The groove depth is 2-3 mm shorter than the docking rod 451, ensuring that mechanical interference occurs after the two sections are connected in place, forcing the compression of the extension spring 445, forming a stable open state. The docking rod 451 is inserted into the docking groove 452, and mechanical interference forces the docking rod to retract, pushing the edge guide rod 442 to move inward. The extension spring 445 is compressed to the limit, the hollow sealing ball 443 is separated from the spherical sealing groove 411, the flow channel is connected, and the multi-point locking piece 8 is locked to prevent accidental separation caused by vibration. When there is no external force, the extension spring 445 returns to its original position, and the hollow sealing ball 443 is pushed into the spherical sealing groove 411, forming a ring-shaped linear seal. The reverse pressure of the fluid further compresses the sealing ball, forming a double-sealing guarantee;

[0112] Specifically, the elastic sealing piece 44 further comprises:

[0113] The positioning block 446 is arranged at a central position in the flow-through cylinder 41;

[0114] The positioning rod 447 is uniformly distributed on the side wall of the positioning block 446, and the end is fixedly installed on the inner wall of the flow-through cylinder 41;

[0115] The movable bolt 448 is movably arranged at the middle position of the positioning block 446, and one end is fixedly connected with the hollow sealing ball 443;

[0116] The extension spring 449 is sleeved outside the movable bolt 448, one end abuts against the positioning block 446, and the other end abuts against the hollow sealing ball 443;

[0117] To improve the axial positioning accuracy and anti-offload capacity of the sealing assembly, the newly added positioning block 446, positioning rod 447, movable bolt 448 and telescopic spring two 449 constitute a double-spring-driven centering system, which further optimizes the motion trajectory of the hollow sealing ball 443 and the sealing stability. The cooperative working mechanism is as follows: in the sealing state, the telescopic spring one 445 (main spring) and the telescopic spring two 449 (auxiliary spring) simultaneously exert a pre-tightening force, which is transmitted to the hollow sealing ball 443 through the movable bolt 448. The low stiffness characteristic of the telescopic spring two 449 makes the initial compression force of the ball gentle, avoiding overload wear of the sealing surface. The high stiffness of the telescopic spring one 445 provides final rigid support, ensuring high-pressure sealing. In the triggering process, when the abutting rod 451 of the trigger mechanism 45 is pressed, the telescopic spring two 449 (with smaller spring force) is compressed first, the movable bolt 448 drives the hollow sealing ball 443 to move slightly (about 2mm), and the sealing pressure is initially released. Continue to apply pressure, the telescopic spring one 445 is compressed, the hollow sealing ball 443 quickly leaves the spherical sealing groove 411, and the flow channel is completely connected. The stiffness difference of the double springs makes the opening process complete in two stages, reducing the operating impact force and prolonging the service life of the mechanism. After the external force is removed, the spring one and the spring two cooperate to push the movable bolt 448 back to its original position. The telescopic spring one 445 dominates the rapid reset (high stiffness), ensuring that the hollow sealing ball 443 quickly returns to its original position. The flexible pre-tightening force of the telescopic spring two 449 assists in adjusting the attitude of the hollow sealing ball 443, avoiding hard collision between the ball and the sealing groove. This enhanced elastic sealing element realizes the balance of high-precision sealing, low operating force and long service life through the double-spring gradient pre-tightening and centering positioning system, and is especially suitable for large-flow and high-pressure liquid organic fertilizer spraying scenes, providing a core guarantee for the reliable operation of the modular spraying mechanism.

[0118] In particular, the multi-point locking element 8 comprises:

[0119] An angle locking block 81 movably installed in a placement groove on the peripheral wall of the tail connecting block 441;

[0120] An angle locking rod 82 fixedly arranged at the central position of the angle locking block 81, one end of which penetrates the inner wall of the tail connecting block 441 and corresponds to the angle locking groove 433 on the side wall of the one-way feeding head 43. A quick inclined insertion surface 821 is formed at the end of the angle locking rod 82, which is used for quick insertion of the one-way feeding head 43. The other end of the angle locking rod 82 is fixedly installed with a connecting rope 83.

[0121] A switch control ring 84 rotatably sleeved on the inner recess of the outer wall of the tail connecting block 441, and the inner wall is fixedly connected with the end of the connecting rope 83.

[0122] A telescopic spring three 85 sleeved on the outer wall of the angle locking rod 82 and arranged at one end of the angle locking block 81 adjacent to the switch control ring 84.

[0123] The angle locking block 81 is embedded in the annular placement slot of the tail connecting block 441 wall, and can slide radially along the slot. The number of locking blocks matches the number of locking points of the one-way feeding head 43. Usually, 3-4 locking blocks are arranged to form symmetrical stress at 120° or 90°. In this application, the number of locking blocks is three. The angle locking rod 82 is inserted into the side wall guide hole of the tail connecting block 441. The end is processed with a 15°-30° quick inclined insertion surface 821. The angle locking rod is guided to slide into the angle locking slot 433. The outer surface of the switch control ring 84 is knurled. Gloves can also be held to operate. When the switch control ring 84 is unlocked, the telescopic spring three 85 pushes the angle locking block 81 to retract radially, forcing the angle locking rod 82 to disengage from the angle locking slot 433.

[0124] Specifically, the angle adjusting mechanism 5 comprises:

[0125] The servo motor one 51 is fixedly installed on the outer wall of the organic fertilizer box 1.

[0126] The gear 52 is fixedly installed on the output end of the servo motor one 51.

[0127] The annular rack 53 is fixedly installed on the side wall of the transfer disc 2. The gear 52 and the annular rack 53 are meshingly connected.

[0128] The servo motor 51 receives the instructions of the controller, drives the gear 52 to rotate, and the gear 52 is meshed with the annular rack 53 to drive the transfer disc 2 to rotate around the central axis of the organic fertilizer box 1. The rotation angle is fed back to the controller by the built-in encoder of the servo motor one 51, forming a closed loop control. The operator inputs the target angle through the handheld terminal or the control panel. The servo motor one 51 is driven to the specified position.

[0129] Specifically, the stirring mechanism 6 comprises:

[0130] The servo motor two 61 is fixedly installed on the upper end of the organic fertilizer box 1.

[0131] The central stirring shaft 62 is movably installed in the interior of the organic fertilizer box 1, and is fixedly connected with the output end of the servo motor two 61 through a shaft coupling at the top.

[0132] The back-bending stirring rod 63 is uniformly fixed on the side wall of the central stirring shaft 62 by bolts, and is arranged in a linear array along the axial direction of the central stirring shaft 62.

[0133] The stirring mechanism 6 is one of the core components of the liquid organic fertilizer spreader, responsible for ensuring that the organic fertilizer remains uniformly mixed during storage and transportation, avoiding sedimentation and stratification, thereby ensuring uniformity and effectiveness of the spread. The back-bending stirring rods 63 are evenly distributed along the central stirring shaft 62, with a set of 3-4 rods every 200-300mm. The stirring rods are in a spiral or back-bending shape, ensuring that the liquid generates vortexes during stirring, promoting the mixing of upper and lower layers of liquid and avoiding stratification.

[0134] Specifically, the remaining amount monitoring mechanism 7 includes:

[0135] The vertical rod 71 is fixedly installed in the organic fertilizer tank 1.

[0136] The floating plate 72 is movably sleeved on the vertical rod 71.

[0137] The piezoresistive liquid level sensor 73 is inlaid on the floating plate 72, which feeds back the liquid level height to the cab display screen in real time.

[0138] The magnet 74 is inlaid on the floating plate 72.

[0139] The reed tube 75 is inlaid on the top of the inner wall of the organic fertilizer tank 1.

[0140] The buzzer 76 is fixedly installed on the top of the outer wall of the organic fertilizer tank 1 and is electrically connected to the reed tube 75 through wires.

[0141] The vertical rod 71 is fixedly installed on the inner wall of the organic fertilizer tank 1 and is made of 316 stainless steel with polished surface to reduce sliding friction with the floating plate 72. The floating plate 72 is made of hollow polypropylene filled with closed-cell foam to ensure a buoyancy of ≥5N and is sprayed with polytetrafluoroethylene to resist organic acid corrosion. The floating plate 72 is suspended at a high position, the magnet 74 is close to the reed tube 75, the reed tube 75 is normally closed, and when the liquid level is normal, the magnet 74 is close to the contact to break the circuit and the buzzer 76 does not work. When the liquid level drops to the threshold value, the floating plate 72 descends with the liquid level, the magnet 74 moves away from the reed tube 75, the reed tube 75 returns to the closed state, the circuit is turned on, and the buzzer 76 triggers an alarm. When the liquid level rises, the floating plate 72 floats, the magnet 74 reapproaches the reed tube 75, the reed tube 75 breaks the contact, the circuit is broken, and the buzzer 76 stops alarming.

[0142] Working principle: The device is composed of an organic fertilizer tank, an angle adjusting mechanism, a spreading unit, a stirring mechanism, and a remaining amount monitoring mechanism. Through the coordinated control of electromechanical devices, the device realizes the precise spreading of liquid organic fertilizer. The division of labor of each module is as follows:

[0143] Organic fertilizer tank: stores liquid organic fertilizer and integrates the stirring mechanism to keep the fertilizer uniform.

[0144] Angle adjustment mechanism: controls the rotation of the transfer disc, adjusting the spreading direction.

[0145] Spreading module: connected to the one-way feeding head through the multi-point locking device, responsible for fertilizer spraying.

[0146] Stirring mechanism: prevents organic fertilizer from settling and stratifying, ensuring fluidity.

[0147] Remaining amount monitoring mechanism: real-time monitoring of liquid level and triggering of low liquid level alarm.

[0148] The specific working process of the device is as follows:

[0149] I. Preparation stage

[0150] Check the liquid level: start the remaining amount monitoring mechanism 7, the piezoresistive sensor 73 detects the liquid level in the organic fertilizer tank 1 in real time, and feeds the data to the display screen in the cab, if the liquid level is below the safety threshold (such as 20%), the buzzer 76 starts, prompting the operator to add fertilizer.

[0151] Stirring pre-operation: start the stirring mechanism 6, the servo motor drives the central stirring shaft 62 to rotate, the back-bending stirring rod 63 stirs the liquid organic fertilizer, ensuring uniformity, the stirring speed is dynamically adjusted according to the viscosity of the fertilizer: initial low speed (300 rpm) for 5 minutes, then switch to high speed (1200 rpm) to prevent sedimentation and stratification.

[0152] Install the spreading module 4: according to the job requirements, select the spreading width, determine the number of spreading modules 4 in series, insert the spreading modules 4 one by one into the controllable sealing port one of the transfer disc 2, use the multi-point locking device 8 to quickly lock, the insertion guide: the inclined insertion surface 821 contacts the one-way feeding head 43 locking groove, the extension spring three 85 is compressed and shrunk, the locking rod 82 slides into the groove, manual locking: rotate the switch control ring 84, the connecting rope 83 is tightened, the angle locking block 81 is embedded into the wedge-shaped groove, forming a stable connection.

[0153] Angle adjustment calibration: the angle adjustment mechanism 5 drives the transfer disc 2 to rotate to the initial position (default horizontal spreading mode).

[0154] II. Job execution stage

[0155] Suction and delivery: the corrosion-resistant diaphragm pump 33 starts, liquid fertilizer is extracted from the bottom of the organic fertilizer tank 1 through the communication pipe two 31, and after removing impurities through the filter screen 34, it is delivered to the transfer disc 2, the suction flow is dynamically adjusted according to the liquid level: full-speed output when the liquid volume is sufficient, and reduced frequency operation to avoid idling when the liquid level is low.

[0156] Transfer and distribution: the active disc body 22 of the transfer disc 2 receives the fertilizer and distributes it to each spreading unit 4 through the flow channel. The controllable sealing port automatically opens when the spreading unit 4 is connected and restores the sealing state when disconnected.

[0157] Spreading unit operation: the flow meter 413 inside the cylinder 41 monitors the fertilizer flow in real time, and the data is uploaded to the central controller. The linkage suction pump adjusts the output power, and the spreading nozzle 42 uniformly sprays the fertilizer according to the set mode (horizontal atomization or vertical jet).

[0158] Horizontal spreading mode: suitable for uniform fertilization in large fields, with adjustable coverage width of 3-15 meters.

[0159] Vertical spreading mode: targeted fertilization for high-stalk crops, covering the middle and lower parts of the stems.

[0160] Dynamic monitoring and adjustment: the piezoresistive sensor 73 refreshes the liquid level data every 5 seconds and displays it on the cab screen. If the viscosity of the fertilizer increases, the stirring mechanism 6 automatically switches to high-speed mode (1200 rpm) to prevent sedimentation and blockage.

[0161] Three, low liquid level processing stage

[0162] First warning: when the liquid level drops to 10%, the floating plate 72 sinks to an area where the reed switch 75 cannot sense, and the buzzer 76 triggers, prompting "almost empty".

[0163] Second protection: if the liquid level continues to drop to 5%, the remaining amount monitoring mechanism 7 sends a command to the suction mechanism 3 to automatically close the corrosion-resistant diaphragm pump 33 to prevent damage to the equipment.

[0164] Emergency replenishment: the operator pauses the operation, opens the top conical feed bin of the organic fertilizer tank 1, replenishes the fertilizer to a safe liquid level (>20%), starts the stirring mechanism 6 to stir the fertilizer evenly, and continues to run after resetting.

[0165] Four, end of operation stage

[0166] Device reset: turn off the suction mechanism 3 and the stirring mechanism 6, and the angle adjustment mechanism 5 drives the transfer disc 2 to rotate to the initial position (horizontal spreading mode), the spreading nozzle 42 stops spraying, and the electromagnetic valve 421 closes the flow channel.

[0167] Dismantling and cleaning: rotate the switch control ring 84 counterclockwise, release the connecting rope 83, and the telescopic spring three 85 pushes the locking rod 82 out of the locking slot to quickly disassemble the spreading unit 4. Use a high-pressure water gun to flush the organic fertilizer tank 1, stirring rod 63 and spreading unit 4 to prevent residual fertilizer from solidifying or corroding the equipment.

[0168] Maintenance inspection: clean the filter screen 34, check if there is a blockage or wear phenomenon, replace the new screen if necessary, check the hollow sealing ball 443 of the elastic sealing member 44 and the spherical sealing groove 411, and ensure that there is no risk of leakage.

[0169] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0170] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will still be able to modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An adjustable organic fertilizer spreader characterized in that: The utility model relates to an organic fertilizer box (1) is used as the storage tank of liquid organic fertilizer, a transfer disc (2) is symmetrically movably arranged at the lower side of the rear side of the organic fertilizer box (1) and is used as the transfer area of fertilizer, a suction mechanism (3) is connected with the transfer disc (2) and is used for sucking the internal fertilizer and conveying to the transfer disc (2), a multi-section type scattering mechanism is composed of a plurality of detachable scattering single sections (4) and is arranged at one side of the transfer disc (2), the linear adjustment of scattering width is realized through the series combination of the detachable scattering single section (4), an angle adjusting mechanism (5) is arranged corresponding to the transfer disc (2) and is used for switching the scattering mechanism between the horizontal scattering position and the vertical storage position, a stirring mechanism (6) is arranged at the central position in the organic fertilizer box (1) and is used for stirring the liquid organic fertilizer, a residual amount monitoring mechanism (7) is used for monitoring the residual amount of the organic fertilizer in the organic fertilizer box (1) and is electrically connected with the suction mechanism (3, and the suction mechanism (3) is automatically closed when the liquid level is lower than the threshold value. The scattering single section (4) comprises a flow-through cylinder (41) which is hollow and is used for storing and flowing the organic fertilizer, a flowmeter (413) is arranged at the central position of the flow-through cylinder (41), a scattering nozzle (42) is fixedly arranged at the central position of the lower end of the flow-through cylinder (41) and is used for uniformly scattering the organic fertilizer, an electromagnetic valve (421) is arranged at the front end of the scattering nozzle (42) and is used for opening and closing control, a one-way feeding head (43) is arranged at the head of the flow-through cylinder (41) and is used for one-way feeding of the organic fertilizer, a one-way valve (431) is embeddedly arranged at the tail end of the one-way feeding head (43) and is used for allowing the fluid to flow in only in one direction, a controllable sealing port two is arranged at the tail of the scattering single section (4) and has the same structure as the controllable sealing port one, comprising an elastic sealing element (44) and a trigger mechanism (45), the elastic sealing element (44) is kept closed under the normal state, when the adjacent scattering single sections (4) are connected, the trigger mechanism (45) is driven by mechanical extrusion to displace the elastic sealing element (44) and realizes the through connection of the flow channel. The elastic sealing element (44) comprises a tail connecting block (441) which is fixedly arranged at the tail of the flow-through cylinder (41), a connecting groove (432) is arranged at the end of the tail connecting block (441) away from the flow-through cylinder (41), the one-way feeding head (43) is fixedly arranged in the connecting groove (432) through a multi-point locking element (8), an edge guide rod (442) is movably arranged at the edge of the tail connecting block (441), one end of the edge guide rod (442) extends into the flow-through cylinder (41) and is fixedly arranged with a hollow sealing ball (443), and the hollow sealing ball (443) is fittedly arranged in a spherical sealing groove (411) in the flow-through cylinder (41), a fixed ring (444) is movably arranged in an edge movable groove (412) in the flow-through cylinder (41) and is fixedly arranged on the edge guide rod (442), a telescopic spring one (445) is arranged outside the edge guide rod (442) and is arranged at one end of the fixed ring (444) away from the flow-through cylinder (41), and the hollow sealing ball (443) is triggered to be separated from the spherical sealing groove (411) when the telescopic spring one (445) is compressed. The trigger mechanism (45) comprises ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The butt joint rod (451) is fixedly installed at the other end of the edge guide rod (442), and the end is flush with the end of the tail connecting block (441); The butt joint groove (452) is arranged on the one-way feeding head (43), and the groove depth is shorter than the length of the butt joint rod (451); The elastic sealing element (44) further comprises: The positioning block (446) is arranged at the central position in the through cylinder (41); The positioning rod (447) is uniformly distributed on the side wall of the positioning block (446), and the end is fixedly installed on the inner wall of the through cylinder (41); The movable bolt (448) is movably arranged at the middle position of the positioning block (446), and one end is fixedly connected with the hollow sealing ball (443); The telescopic spring two (449) is sleeved outside the movable bolt (448), one end abuts against the positioning block (446), and the other end abuts against the hollow sealing ball (443).

2. The adjustable organic fertilizer spreader according to claim 1, characterized in that: The transfer disc (2) comprises: The hollow guide ring (21) is fixedly installed at the lower position of the side wall of the organic fertilizer box (1), and the other end is fixedly installed with the outer edge guide ring (211), and the side wall is uniformly distributed with the hollow heat dissipation port (212); The movable disc body (22) is cylindrically shaped, movably installed at the end of the hollow guide ring (21), and the movable disc body (22) is limited by the outer edge guide ring (211), and the inside is provided with a flow channel, one end of the flow channel is fixedly installed with a communication pipe one (23), and the other end is provided with a controllable sealing port one, and is communicated with the spraying single section (4).

3. The adjustable organic fertilizer spreader according to claim 1, wherein: The suction mechanism (3) comprises: The communication pipe two (31) is arranged through the side wall of the organic fertilizer box (1), one end is communicated to the inside of the organic fertilizer box (1), and the other end is movably connected with the communication pipe one (23) through the movable head (32); The corrosion-resistant diaphragm pump (33) is fixedly arranged on the side wall of the organic fertilizer box (1), arranged on the communication pipe two (31), and used for pumping and conveying the organic fertilizer; The filter screen (34) is magnetically installed in the embedded groove (11) of the inner wall of the organic fertilizer box (1) through the magnet one (35), arranged at the end of the communication pipe two (31), and used for filtering the flowing organic fertilizer, and the outer wall surface of the filter screen (34) is flush with the inner wall surface of the organic fertilizer box (1).

4. The adjustable organic fertilizer spreader of claim 1, wherein: The multi-point locking element (8) comprises: The angle locking block (81) is movably installed in the placement groove of the peripheral wall of the tail connecting block (441); The angle locking rod (82) is fixedly arranged at the central position of the angle locking block (81), one end penetrates the inner wall of the tail connecting block (441), and is one-to-one corresponding with the angle locking groove (433) of the side wall of the one-way feeding head (43), the end of the angle locking rod (82) is provided with a quick inclined insertion surface (821), which is used for quick insertion of the one-way feeding head (43), and the other end of the angle locking rod (82) is fixedly installed with a connecting rope (83); The switch control ring (84) is rotatably sleeved in the inner recess of the outer wall of the tail connecting block (441), and the inner wall is fixedly connected with the end of the connecting rope (83); The telescopic spring three (85) is sleeved outside the outer wall of the angle locking rod (82) and arranged at one end of the adjacent switch control ring (84) of the angle locking block (81).

5. The adjustable organic fertilizer spreader according to claim 1, wherein: The angle adjusting mechanism (5) comprises: The servo motor one (51) is fixedly installed on the outer wall of the organic fertilizer box (1); The gear (52) is fixedly installed on the output end of the servo motor one (51); The annular rack (53) is fixedly installed on the side wall of the middle transfer disc (2), and the gear (52) and the annular rack (53) are meshed and connected.

6. The adjustable organic fertilizer spreader of claim 1, wherein: The stirring mechanism (6) comprises: The servo motor two (61) is fixedly installed on the central position of the upper end of the organic fertilizer box (1); The central stirring shaft (62) is movably installed in the organic fertilizer box (1), and the top is fixedly connected with the output end of the servo motor two (61) through a shaft coupling; The back-bending stirring rod (63) is uniformly fixed on the side wall of the central stirring shaft (62) through bolts and is arranged in a linear array along the axial direction of the central stirring shaft (62).

7. The adjustable organic fertilizer spreader of claim 1, wherein: The residual amount monitoring mechanism (7) comprises: The vertical rod (71) is fixedly installed in the organic fertilizer box (1); The floating plate (72) is movably sleeved on the vertical rod (71); The piezoresistive liquid level sensor (73) is inlaidly installed on the floating plate (72) and feeds back the liquid level height to the cab display screen in real time; The magnet two (74) is inlaidly installed on the floating plate (72); The reed tube (75) is inlaidly installed on the top position of the inner wall of the organic fertilizer box (1); The buzzer alarm (76) is fixedly installed on the top position of the outer wall of the organic fertilizer box (1) and is electrically connected with the reed tube (75) through wires.

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