Fertilizer scattering machine

Abstract

The utility model relates to the technical field of fertilizer scattering equipment, and provides a fertilizer scattering machine, which comprises a material box having a containing space, the containing space is used for containing a fertilizer, and the bottom of the material box is provided with a discharge port; the spiral blade is rotationally arranged in the material box and is used for guiding the fertilizer in the containing space to the discharging opening; the sensor is arranged on the side wall of the material box, located above the discharging port and electrically connected with a start-stop switch of the spiral blade. By means of the technical scheme, the technical problem that in the prior art, a spiral conveying assembly in a material box cannot be started and stopped in time is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of fertilizer spreading equipment technology, and more specifically, to a fertilizer spreading machine. Background Technology

[0002] Fertilizers are substances that provide one or more essential nutrients for plants, improve soil properties, and enhance soil fertility. They are one of the material foundations of agricultural production. They mainly include ammonium phosphate fertilizers, water-soluble fertilizers containing macronutrients, fertilizers containing micronutrients, bio-fertilizers, organic fertilizers, and multi-dimensional concentrated organic fertilizers. Fertilizers commonly used in modern agriculture are usually in granular, powder, or block form, and these fertilizers can be directly applied to the soil for plants to absorb nutrients.

[0003] In existing technologies, solid fertilizer spreaders typically consist of a rotating spreading disc and a feed hopper. Fertilizer in the hopper falls onto the rotating spreading disc under gravity, and the disc uses centrifugal force to propel the fertilizer outwards. To adapt to the large-scale planting of modern agriculture, the size of the feed hopper has become increasingly larger. To ensure that the fertilizer in the hopper can fall smoothly from the discharge port, a screw conveyor assembly is added inside the hopper. This assembly transports fertilizer that is far from the discharge port to the discharge port. However, in actual use, the screw conveyor assembly is usually in a continuous working state and cannot automatically start and stop based on the actual amount of fertilizer remaining in the hopper, resulting in wasted power and increased machine operating costs. Utility Model Content

[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide a fertilizer spreader that solves the technical problem that the screw conveyor assembly in the hopper cannot be started and stopped in a timely manner in the prior art.

[0005] According to one aspect, at least one embodiment of this disclosure provides a fertilizer spreader, comprising:

[0006] The material bin has a holding space for holding fertilizer, and the bottom of the material bin has a discharge port;

[0007] A spiral blade is rotatably disposed inside the hopper, and the spiral blade is used to guide the fertilizer in the holding space to the discharge port;

[0008] A sensor is installed on the side wall of the hopper, located above the discharge port, and is electrically connected to the start / stop switch of the spiral blade.

[0009] For example, in a fertilizer spreader provided in at least one embodiment of this disclosure, the feed hopper further has a guide ramp located within the holding space, and the guide ramp is used to guide the fertilizer in the holding space to the spiral blades.

[0010] For example, in a fertilizer spreader provided in at least one embodiment of this disclosure, there is a first gap between the edge of the spiral blade away from the axis of rotation and the guide inclined surface, the first gap being less than 5 mm.

[0011] For example, in a fertilizer spreader provided in at least one embodiment of this disclosure, the fertilizer spreader further includes:

[0012] A first sliding plate is slidably disposed on the material box. The first sliding plate is configured such that the discharge port is opened or closed after the first sliding plate slides.

[0013] A second sliding plate is slidably disposed on the hopper. The second sliding plate is located below the first sliding plate or above the first sliding plate. The second sliding plate is configured such that the discharge port is fully or partially opened after the second sliding plate slides.

[0014] For example, in a fertilizer spreader provided in at least one embodiment of this disclosure, the fertilizer spreader further includes:

[0015] The mobile frame has a traction unit and a support unit, the support unit having rotating wheels, the material box being disposed on the support unit, and the traction unit being detachably connected to the vehicle powertrain.

[0016] For example, in at least one embodiment of the fertilizer spreader provided in this disclosure, the fertilizer spreader further includes a spreading component, the spreading component comprising:

[0017] A power module is mounted on the mobile frame, and the power module has a power output end;

[0018] A rotating disc is provided at the power output end. The rotating disc is located below the discharge port and is used to receive fertilizer falling from the discharge port.

[0019] Several paddles are provided on the rotating disk, and the paddles are used to push the fertilizer on the rotating disk to rotate with the rotating disk.

[0020] For example, in a fertilizer spreader provided in at least one embodiment of this disclosure, the spreading component further includes:

[0021] A baffle is provided on the movable frame, the baffle is located on one side of the rotating disk, and the baffle is used to prevent fertilizer on the rotating disk from flying into the area below the movable frame.

[0022] For example, in a fertilizer spreader provided in at least one embodiment of this disclosure, the top of the feed hopper has a feed inlet, and the fertilizer spreader further includes:

[0023] A screen is provided at the feed inlet to prevent materials with larger particle sizes from entering the holding space.

[0024] For example, in a fertilizer spreader provided in at least one embodiment of this disclosure, the feed box is assembled by bolts.

[0025] For example, in a fertilizer spreader provided in at least one embodiment of this disclosure, the spiral blades and the screen are all bolted to the feed box.

[0026] The beneficial effects of the embodiments disclosed herein are as follows:

[0027] In this disclosure, the spiral blades automatically start and stop based on the remaining fertilizer in the hopper, effectively avoiding unnecessary power consumption. Actual tests show that compared to traditional continuously operating spiral conveyor components, this technology reduces power consumption by 30%-50%, significantly lowering operating costs and improving energy efficiency. Sensor control prevents continuous operation of the spiral blades, reducing wear and fatigue and extending the service life of the blades and related components such as the drive unit. Simultaneously, the rational start-stop control reduces the probability of equipment failure due to prolonged continuous operation, decreasing maintenance costs and downtime, and improving equipment reliability and stability. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0029] Figure 1 This is a structural schematic diagram of the first angle (hidden screen) of this disclosure;

[0030] Figure 2 This is a schematic cross-sectional view of the structure disclosed herein;

[0031] Figure 3 This is a structural schematic diagram from a second perspective of the present disclosure;

[0032] Figure 4 This is a structural schematic diagram from a third perspective of the present disclosure;

[0033] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle;

[0034] Figure 6 This is a structural diagram from the fourth perspective of the present disclosure;

[0035] Figure 7 A bottom view of the entire disclosure;

[0036] Figure 8 for Figure 7 Schematic diagram of cross-section at point AA;

[0037] In the diagram: 100, material bin; 110, space; 111, discharge port; 200, spiral blade; 300, sensor; 120, guide ramp; 121, first gap; 400, first sliding plate; 500, second sliding plate; 600, moving frame; 610, traction unit; 620, support unit; 621, rotating wheel; 700, scattering assembly; 710, power module; 720, rotating disk; 730, lever; 740, baffle; 112, feed port; 800, screen. Detailed Implementation

[0038] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0039] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0040] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0041] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0043] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] like Figures 1-2 The diagram illustrates a fertilizer spreader according to one embodiment of this disclosure. The fertilizer spreader mainly consists of a hopper 100, a spiral blade 200, a sensor 300, and a spreading disc. The hopper 100 serves as a fertilizer storage container, having an internal holding space 110 for holding various solid fertilizers, such as granular ammonium phosphate fertilizers and powdered water-soluble fertilizers containing macroelements. A discharge port 111 is located at the bottom of the hopper 100, through which the fertilizer enters the subsequent spreading stage. The spiral blade 200 is installed inside the hopper 100, and its rotation axis is typically arranged along the longitudinal central axis of the hopper 100, ensuring coverage of a large area of ​​the holding space 110 and effectively guiding the fertilizer to the discharge port 111. The sensor 300 is fixed to the side wall of the hopper 100, positioned above the discharge port 111, and is electrically connected to the start / stop switch of the spiral blade 200, monitoring the fertilizer status inside the hopper 100 in real time and controlling the operation of the spiral blade 200. The spreading disc is located below the discharge port 111 of the material box 100. The centrifugal force generated by its rotation will evenly spread the fertilizer falling from the discharge port 111 onto the soil.

[0045] The feed hopper 100 is made of high-strength, corrosion-resistant material to adapt to the chemical properties of different fertilizers, prevent corrosion, and ensure the service life of the feed hopper 100. Its shape is typically designed as a trapezoid or inverted cone, wider at the top and narrower at the bottom. This shape facilitates the natural sliding of fertilizer under gravity, reducing fertilizer accumulation and residue within the feed hopper 100. Simultaneously, to enhance the structural strength of the feed hopper 100, multiple reinforcing ribs are installed on its outer wall, especially at the bottom and corners, to withstand the weight of the fertilizer and the impact during transportation.

[0046] The discharge port 111 is located at the center of the bottom of the feed hopper 100 or at one of its longitudinal ends. Its shape is circular or square, and its size is adjusted according to the working efficiency of the spreader and the size of the fertilizer particles. When the discharge port 111 is located at the center of the bottom of the feed hopper 100, the spiral blades 200 feed material into the discharge port 111 in a double-stage, counter-clockwise manner. When the discharge port 111 is located at one of the longitudinal ends of the bottom of the feed hopper 100, the spiral blades 200 feed material into the discharge port 111 in the same spiral direction. For example, for larger fertilizer particles, the diameter or side length of the discharge port 111 is relatively large to ensure that the fertilizer can pass through smoothly and avoid blockage. The edges of the discharge port 111 are usually smoothed to prevent the fertilizer from getting stuck or damaged during the discharge process.

[0047] The spiral blades 200 are made of wear-resistant metal materials, such as stainless steel or manganese steel, to withstand the friction and wear of the fertilizer. The blades are in a continuous spiral shape, with the pitch and diameter adapted to the size of the hopper 100 and the flowability of the fertilizer. The spiral blades 200 are fixed to the rotating shaft by welding or bolting, and the two ends of the rotating shaft are installed in bearing seats on the side wall of the hopper 100 to ensure rotational stability. The spiral blades 200 are driven by an electric motor or a hydraulic motor. The electric motor drive is simple in structure and low in cost, suitable for small spreaders; the hydraulic motor drive has the advantages of high torque and wide speed range, and is often used in large spreaders. The drive unit is connected to the rotating shaft through a coupling or chain drive, transmitting power to the spiral blades 200 to rotate them within the hopper 100.

[0048] Sensor 300 is selected from either an ultrasonic sensor 300 or a photoelectric sensor 300. The ultrasonic sensor 300 detects the height of fertilizer inside the hopper 100 by emitting and receiving ultrasonic signals. Its working principle is based on calculating the distance by measuring the time difference between the ultrasonic wave traveling through the air, encountering the fertilizer surface, and reflecting back, thus obtaining fertilizer height information. The photoelectric sensor 300 utilizes the principle of light reflection or obstruction. When the fertilizer height changes, the reflection or obstruction of light changes, and the sensor 300 determines the fertilizer height based on these changes in light. Both types of sensors 300 feature fast response speed and high accuracy, meeting the requirements for real-time monitoring of fertilizer height.

[0049] Sensor 300 is installed on the side wall of hopper 100, positioned above discharge port 111, to ensure accurate monitoring of fertilizer height changes above discharge port 111. Before installation, sensor 300 needs to be calibrated. The detection threshold of sensor 300 is set according to the dimensions of hopper 100 and the expected range of fertilizer height changes. For example, when the fertilizer height is below a certain set value, sensor 300 sends a signal to trigger the spiral blades 200 to start; when the fertilizer height is above another set value, sensor 300 sends a signal to stop the spiral blades 200 from operating.

[0050] In actual use, fertilizer is pre-filled into the holding space 110 of the material bin 100. At the initial start-up of the spreader, if there is sufficient fertilizer in the material bin 100, and the fertilizer height above the discharge port 111 is higher than the upper limit threshold set by the sensor 300, the sensor 300 does not send a signal to start the spiral blades 200, and the spiral blades 200 remain stationary. The fertilizer falls naturally through the discharge port 111 onto the spreading disc under its own gravity. The spreading disc rotates at high speed under power, using centrifugal force to evenly spread the fertilizer onto the soil. As the spreading process continues, the fertilizer in the material bin 100 gradually decreases. When the fertilizer height above the discharge port 111 drops to the lower limit threshold set by the sensor 300, the sensor 300 detects this change and sends a signal to the start / stop switch of the spiral blades 200 via electrical connection, starting the spiral blades 200. Driven by the drive unit, the spiral blades 200 begin to rotate, pushing the fertilizer in the holding space 110, which is far from the discharge port 111, along the spiral trajectory towards the discharge port 111, ensuring a continuous supply of fertilizer and maintaining the continuity of the spreading operation. When fertilizer is added and the fertilizer level in the hopper 100 rises again to the upper limit threshold set by the sensor 300, the sensor 300 sends a signal again to control the start / stop switch of the spiral blades 200, causing the spiral blades 200 to stop working. At this time, the fertilizer can then fall naturally to the spreading plate by gravity for spreading, avoiding unnecessary operation of the spiral blades 200 and saving power.

[0051] The spiral blades 200 automatically start and stop based on the remaining fertilizer in the hopper 100, effectively avoiding unnecessary power consumption. Actual tests show that compared to traditional continuously operating spiral conveyor components, this technology reduces power consumption by 30%-50%, significantly lowering operating costs and improving energy efficiency. Controlled by sensor 300, the spiral blades 200 no longer operate continuously, reducing wear and fatigue and extending the lifespan of the spiral blades 200 and related components such as the drive unit. Simultaneously, this reasonable start-stop control reduces the probability of equipment failure due to prolonged continuous operation, decreasing maintenance costs and downtime, and improving equipment reliability and stability.

[0052] For example Figures 1-2As shown, the hopper 100 also has a guide ramp 120, which is located within the holding space 110. The guide ramp 120 is typically integrally formed from the same material as the hopper 100, or fixed to the inner wall of the hopper 100 by welding, bolting, or other methods. The angle between the ramp and the bottom of the hopper 100 is generally between 30° and 60°, with the specific angle adjusted according to the fertilizer flowability and the size of the hopper 100. The guide ramp 120 extends from the upper part of the hopper 100 to near the spiral blade 200, guiding fertilizer away from the spiral blade 200 into its effective range, thus improving fertilizer conveying efficiency. In actual installation, the two guide ramps 120 are located on either side of the spiral blade 200. The two guide ramps 120 guide the fertilizer in the holding space 110 onto the spiral blade 200, enabling the guide blade to efficiently convey fertilizer to the outlet 111, ensuring fertilizer spreading efficiency.

[0053] The guide slope 120 can not only improve the efficiency of fertilizer flow to the spiral blade 200, thereby improving the continuity of fertilizer spreading; the guide slope 120 and gravity work together to make the fertilizer flow automatically to the spiral blade 200, avoiding the accumulation of fertilizer in the holding space 110.

[0054] For example Figure 8 As shown, a first gap 121, less than 5 mm, exists between the edge of the spiral blade 200 away from the rotation axis and the guide slope 120. The fit between this first gap 121 (less than 5 mm) and the guide slope 120 prevents fertilizer accumulation between the spiral blade 200 and the guide slope 120, reducing equipment vibration and wear caused by fertilizer buildup. The optimal gap range is 4 mm to 5 mm, which prevents fertilizer accumulation without requiring excessively high machining precision, thus reducing manufacturing costs.

[0055] For example Figure 1 As shown, the fertilizer spreader also includes a first sliding plate 400, which is slidably disposed on the material box 100. The first sliding plate 400 is configured to open or close the discharge port 111 after sliding. A second sliding plate 500 is slidably disposed on the material box 100. The second sliding plate 500 is located below the first sliding plate 400 or above the first sliding plate 400. The second sliding plate 500 is configured to fully or partially open the discharge port 111 after sliding.

[0056] The first sliding plate 400 is made of a corrosion-resistant material similar to that of the hopper 100, and its size is slightly larger than the discharge port 111 to completely cover it. The first sliding plate 400 slides via a drive device or manual control, allowing operators to freely control the opening or closing of the discharge port 111. The drive device for the first sliding plate 400 can be an electric push rod or a cylinder, enabling remote or automatic control.

[0057] The second sliding plate 500 is also made of corrosion-resistant material, and its size and shape are adapted to the discharge port 111. When the second sliding plate 500 is below the first sliding plate 400, the discharge port 111 can be partially or fully opened by sliding, changing the effective cross-sectional area of ​​the discharge port 111, thereby controlling the fertilizer discharge speed. When the second sliding plate 500 is above the first sliding plate 400, the working principle is similar; the opening degree of the discharge port 111 is adjusted by sliding to change its relative position to the discharge port 111. The second sliding plate 500 is equipped with scale markings to allow operators to intuitively understand the opening degree of the discharge port 111. It can also be equipped with an electric adjustment device to precisely control the opening degree of the discharge port 111 through the control panel.

[0058] Operators can precisely control the fertilizer output by adjusting the position of the second sliding plate 500 according to different fertilization needs, such as different crops and different planting densities, thus achieving precision fertilization. Then, when the equipment reaches a point where fertilizer application is no longer needed or needs to be added, the discharge port 111 can be directly closed by controlling the first sliding plate 400. The combined adjustment of the first sliding plate 400 and the second sliding plate 500 improves the overall applicability of the device.

[0059] For example Figure 1 , Figures 3-4 As shown, the fertilizer spreader also includes a mobile frame 600, which is welded from high-strength steel, such as Q345 steel, to ensure it can withstand the weight of the fertilizer in the hopper 100 and various forces encountered during movement. The traction unit is a robust metal frame structure, its shape and size designed to match common vehicle powertrains (such as tractor traction devices). It is connected to the vehicle powertrain via detachable methods such as bolt connections and pin connections, facilitating installation and disassembly. The traction unit is equipped with adjustment devices, such as a screw adjustment mechanism, which can fine-tune the connection angle between the traction unit and the vehicle powertrain to adapt to different terrains and driving conditions, ensuring the stability of the equipment during movement.

[0060] The support unit is a planar frame structure with a mounting base on top that fits the material bin 100. The material bin 100 is securely fixed to the support unit with bolts. Multiple rotating wheels are evenly distributed below the support unit. These wheels use wear-resistant rubber tires and have internal rolling bearings to reduce rolling friction resistance. The number and size of the rotating wheels are determined based on the size of the material bin 100, the weight of the fertilizer, and the expected moving speed of the equipment. For example, a larger fertilizer spreader might use four larger diameter rotating wheels to provide sufficient support and stability. The rotating wheels can also be equipped with braking devices, such as handbrakes or foot brake systems, to fix the equipment in position and prevent slippage when the equipment stops operating.

[0061] The detachable connection between the mobile frame 600 and the vehicle's powertrain allows the fertilizer spreader to be easily moved between different fertilization areas, improving the equipment's operational flexibility. Whether in small plots of farmland or large planting areas, it can be quickly deployed and withdrawn, saving transportation and operation time.

[0062] For example Figures 4-5 As shown, the fertilizer spreader also includes a spreading assembly 700, which includes a power module 710. The power module 710 is mounted on the mobile frame 600 and can use an engine or an electric motor as a power source. It has a power output end to provide rotational power to the rotating disc 720. If an engine is used, a fuel supply system and an exhaust system are required; if an electric motor is used, a power supply and control circuit must be connected to ensure stable power supply and speed regulation.

[0063] The rotating disc 720 is installed at the power output end, directly below the discharge port 111. It is typically made of metal, such as stainless steel, with a smooth surface to effectively catch the fertilizer falling from the discharge port 111, and rotates at high speed driven by the power module 710. The diameter of the rotating disc 720 can be determined according to the spreading range and fertilizer flow rate; a larger rotating disc 720 can achieve a wider spreading range.

[0064] Multiple paddles 730 are evenly distributed on the rotating disk 720, and are made of the same material as the rotating disk 720 or a more wear-resistant material. The paddles 730 are triangular, trapezoidal, or rectangular in shape, and their length directions are all different radial directions of the rotating disk 720. This allows them to effectively push the fertilizer to rotate with the rotating disk 720 when it rotates, and to use centrifugal force to throw the fertilizer out. The number and distribution density of the paddles 730 are determined according to the characteristics of the fertilizer and the requirements for uniformity of distribution, ensuring that the fertilizer is evenly distributed within a certain area.

[0065] For example, such as Figure 5 , Figure 7As shown, the spreading assembly 700 also includes a baffle 740, which is disposed on the movable frame 600 and located on one side of the rotating disk 720. The baffle 740 is used to prevent fertilizer on the rotating disk 720 from flying into the area below the movable frame 600.

[0066] Made of sturdy metal, such as steel plate, it is mounted on the movable frame 600 and located on one side of the rotating disk 720. A baffle 740 surrounds the rotating disk 720 and has a fertilizer dispensing outlet, allowing fertilizer to be dispensed from a predetermined direction. The baffle 740 is typically positioned on the side of the rotating disk 720 closest to the center of the hopper 100, effectively preventing fertilizer from flying under the movable frame 600.

[0067] For example Figure 6 As shown, the top of the material bin 100 has a feed inlet 112, which facilitates the operator to add fertilizer into the holding space 110. The fertilizer spreader also includes a screen 800, which is woven from stainless steel wire, has good corrosion resistance and high strength, and can withstand the impact force when fertilizer is poured in. The mesh size of the screen 800 is determined according to the average particle size of the fertilizer and the maximum allowable particle size. For example, for general granular fertilizer, the mesh size can be set to 5-10mm to prevent larger particles (such as clumps of fertilizer, debris, etc.) from entering the holding space 110 of the material bin 100.

[0068] The screen 800 is installed in a detachable manner at the feed inlet 112. For example, a slot is set on the edge of the feed inlet 112, and a corresponding strip is set on the edge of the screen 800. The screen 800 can be installed by embedding it into the slot, which makes it convenient to clean or replace the screen 800 when it is blocked or damaged.

[0069] For example Figure 1 , Figures 3-6 As shown, the material box is assembled with 100 bolts.

[0070] The material bin 100 is composed of multiple prefabricated panels joined together by bolts. These panels are made of high-strength, corrosion-resistant composite materials, and each panel has matching flanges with evenly distributed bolt holes along its edges. A secure connection between the panels is achieved by passing bolts through the bolt holes and tightening the nuts. Sealing gaskets, such as rubber gaskets, are also installed at the bolted joints to prevent fertilizer leakage. This assembly structure facilitates transportation and installation, and allows for individual replacement of damaged panels.

[0071] For example Figure 1 , Figures 3-6 As shown, the spiral blade 200 and the screen 800 are both bolted to the material box 100.

[0072] The bolted connection between the spiral blades 200 and the screen 800 and the material box 100 allows for convenient and quick disassembly and replacement when the spiral blades 200 wear out or the screen 800 becomes clogged or damaged. This significantly reduces equipment maintenance time and improves equipment utilization. Compared to non-removable connections, maintenance time can be reduced by 30% - 50%, lowering downtime costs.

[0073] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications or substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A fertilizer spreader characterized by, include: The material bin (100) has a holding space (110) for holding fertilizer, and the bottom of the material bin (100) has a discharge port (111). A spiral blade (200) is rotatably disposed inside the hopper (100), and the spiral blade (200) is used to guide the fertilizer in the holding space (110) to the discharge port (111). A sensor (300) is disposed on the side wall of the hopper (100), the sensor (300) is located above the discharge port (111), and the sensor (300) is electrically connected to the start / stop switch of the spiral blade (200).

2. A fertilizer spreader according to claim 1, characterised in that The hopper (100) also has a guide ramp (120) located within the holding space (110) and the guide ramp (120) is used to guide the fertilizer in the holding space (110) to the spiral blade (200).

3. A fertilizer spreader according to claim 2, wherein The edge of the spiral blade (200) and the guide slope (120) have a first gap (121) less than 5 mm.

4. A fertilizer spreader according to claim 1 wherein, The fertilizer spreader also includes: A first sliding plate (400) is slidably disposed on the material box (100). The first sliding plate (400) is configured such that the discharge port (111) is opened or closed after the first sliding plate (400) slides. The second sliding plate (500) is slidably disposed on the material box (100). The second sliding plate (500) is located below the first sliding plate (400) or above the first sliding plate (400). The second sliding plate (500) is configured such that the discharge port (111) is fully or partially opened after the second sliding plate (500) slides.

5. A fertilizer spreader according to claim 1 wherein, The fertilizer spreader also includes: The mobile frame (600) has a traction part (610) and a support part (620), the traction part (610) being detachably connected to the vehicle powertrain, the support part (620) having a rotating wheel (621), and the hopper (100) being disposed on the support part (620).

6. A fertilizer spreader according to claim 5, wherein The fertilizer spreader also includes a spreading component (700), which comprises: A power module (710) is mounted on the movable frame (600), and the power module (710) has a power output end; A rotating disk (720) is provided at the power output end. The rotating disk (720) is located below the discharge port (111). The rotating disk (720) is used to receive fertilizer falling from the discharge port (111). Several paddles (730) are provided on the rotating disk (720). The paddles (730) are used to push the fertilizer on the rotating disk (720) to rotate with the rotating disk (720).

7. A fertilizer spreader according to claim 6, wherein The dispersing assembly (700) also includes: A baffle (740) is provided on the movable frame (600). The baffle (740) is located on one side of the rotating disk (720). The baffle (740) is used to prevent fertilizer on the rotating disk (720) from flying into the area below the movable frame (600).

8. A fertilizer spreader according to claim 1 wherein, The top of the hopper (100) has a feed inlet (112), and the fertilizer spreader also includes: A screen (800) is provided at the feed inlet (112) to prevent materials with larger particle sizes from entering the holding space (110).

9. A fertilizer spreader according to claim 8, wherein, The material box (100) is assembled by bolts.

10. A fertilizer spreader according to claim 9, wherein, The spiral blades (200) and the screen (800) are both bolted to the hopper (100).

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