A stirring fertilizer distributor for mixed bacterial agents

Abstract

This invention relates to a mixing and spreading fertilizer machine for mixing microbial agents, comprising a traveling device, a mixing tank, a microbial agent spraying device, a driving device, and a spreading device. The mixing tank is mounted on the traveling device and has a discharge port. The microbial agent spraying device includes a spray pipe, a power unit, and a storage tank. The power unit connects the storage tank and the spray pipe via pipes, specifically a suction pipe and a delivery pipe. The spray pipe extends into the mixing tank. The driving device is also mounted on the traveling device and is connected to the mixing tank for driving its rotation. The spreading device is also mounted on the traveling device and includes a spreading disc located below the discharge port. In this embodiment, the traveling device is a tracked device. This invention completely solves the problem of traditional fertilizer spreaders being unable to simultaneously add and mix microbial agents, enabling the mechanization of the combined application of organic fertilizer and microbial agents, greatly improving fertilization efficiency, microbial agent utilization rate, and operational quality.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery and equipment technology, and in particular to a mixing and spreading fertilizer machine for mixing microbial agents. Background Technology

[0002] With the promotion of ecological agriculture, organic fertilizer is receiving increasing attention. As an important agricultural resource, organic fertilizer plays a vital role in improving soil fertility, promoting crop growth, and reducing the use of chemical fertilizers. my country's current consumption of organic fertilizer is around 40 million tons (pure nutrients), accounting for 59.5% of the total resource of 67.198 million tons. Therefore, research on organic fertilizer application equipment is particularly important. Existing research indicates that mixing manure with microbial agents can effectively reduce the amount of chemical fertilizer used. Compared with applying manure alone, mixing microbial agents with manure increases the content of organic matter, total nitrogen, and total phosphorus in the soil to varying degrees. However, there are no machines on the market that can effectively mix fertilizers. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a mixing and spreading fertilizer machine for mixing microbial agents, which can uniformly mix organic fertilizer and microbial agents, enabling the combined application of organic fertilizer and microbial agents, and has the advantage of high mixing efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A mixing fertilizer spreader for mixing microbial agents, comprising: Walking device; A mixing tank, which is mounted on the traveling device, has a discharge port; A microbial agent spraying device, comprising a spray pipe, a power unit, and a storage tank, wherein the power unit is connected to the storage tank and the spray pipe via a pipeline, and the spray pipe extends into the mixing tank; A drive device is also mounted on the traveling device, and the drive device is connected to the mixing tank in a transmission manner to drive the mixing tank to rotate; And a spreading device, which is also mounted on the traveling device, the spreading device including a fertilizer spreading disc located below the discharge port.

[0005] In one possible implementation, the interior of the mixing tank is provided with spiral blades.

[0006] In one possible implementation, the fertilizer mixer further includes a feeding device, which comprises: A movable support frame, which is hinged to the walking device; The hopper is hinged to the movable support, the side of the hopper is open to form a shovel opening, and the top of the hopper is provided with a discharge port on the side near the mixing tank. The device includes a hydraulic telescopic assembly, a hydraulic cylinder fixedly mounted on the walking device, and an end of a telescopic shaft connected to the movable bracket. The telescopic shaft drives the hopper to tilt upwards to the discharge port of the mixing tank via the movable bracket.

[0007] In one possible implementation, the walking device is a tracked device.

[0008] In one possible implementation, the outer edge of the nozzle is provided with a plurality of spray nozzles.

[0009] In one possible implementation, the spray nozzle is connected to an anti-clogging component, the anti-clogging component comprising: The pipe body is connected to the spray nozzle, and the outer edge of the pipe body has multiple through holes; And an anti-clogging cap, which is placed over the end of the pipe body.

[0010] In one possible implementation, the anti-clogging cap has a brim, and the brim has a spraying gap with the outer edge of the nozzle.

[0011] In one possible implementation, the spraying gap is 1 mm.

[0012] In one possible embodiment, a bearing seat is provided at one end of the nozzle, the bearing seat is fixedly installed inside the mixing tank, the nozzle is coaxially arranged with the mixing tank, and the nozzle is rotatably connected to the mixing tank through the bearing seat.

[0013] In one possible implementation, a guide trough is provided below the discharge port. The guide trough is funnel-shaped, wider at the top and narrower at the bottom, to guide the material from the discharge port into the fertilizer spreading disc.

[0014] The present invention has the following advantages due to the adoption of the above technical solutions: During operation, the walking device carries the entire machine to the organic fertilizer pile. The drive unit starts and rotates the mixing tank at a constant speed. During the rotation of the mixing tank, the decomposed organic fertilizer is added into the tank, and the organic fertilizer tumbles continuously as the tank rotates. Subsequently, the microbial agent spraying device is activated. The power unit pumps the microbial agent powder from the storage tank through a pipeline to the spray nozzle, where it is dispersed into the mixing tank. Due to the continuous rotation of the mixing tank, the mixture of microbial agent and organic fertilizer is repeatedly tumbled, thrown, and mixed within the tank, ensuring full contact between the microbial agent and the organic fertilizer. After the mixture meets the requirements, it is discharged from the outlet of the mixing tank and spread evenly onto the field using a fertilizer spreading disc driven to rotate at high speed, utilizing centrifugal force. Compared with existing technologies, this invention completely solves the problem that traditional fertilizer spreaders cannot simultaneously add and mix microbial agents, enabling the mechanization of the combined application of organic fertilizer and microbial agents, greatly improving fertilization efficiency, microbial agent utilization rate, and operational quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the specific structure of the mixing fertilizer spreader according to one embodiment of the present invention; Figure 2 This is an illustration of the side structure of a mixing fertilizer spreader according to one embodiment of the present invention; Figure 3 This is a schematic diagram of the specific structure of the microbial agent spraying device in one embodiment of the present invention; Figure 4 This is a schematic diagram of the specific structure of the anti-clogging component in one embodiment of the present invention; Figure label: 1. Storage tank; 2. Reducer; 3. Hydraulic motor; 4. Power component; 5. Walking device; 6. Mixing tank; 7. Microbial agent spraying device; 8. Guide chute; 9. Spraying device; 10. Hopper; 11. Material extraction pipe; 12. Movable support; 13. Feeding pipe; 14. Hydraulic telescopic assembly; 15. Drive motor; 16. Bearing seat; 17. Spray pipe; 18. Flange; 19. Anti-clogging component; 20. Pipe body; 21. Anti-clogging cap; 22. Through hole. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention are described clearly and completely below. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0017] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," "third," "fourth," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0018] With the promotion of ecological agriculture, organic fertilizer is receiving increasing attention. As an important agricultural resource, existing research shows that mixing manure with microbial agents can effectively reduce the amount of chemical fertilizer used. Compared with applying manure alone, the organic matter, total nitrogen, and total phosphorus content in the soil are all increased to varying degrees when microbial agents are mixed with manure. However, there is no machinery on the market that can effectively mix fertilizers. To address the above technical problems, this invention provides a mixing and spreading fertilizer machine for mixing microbial agents. It can uniformly mix organic fertilizer and microbial agents, achieving the combined application of organic fertilizer and microbial agents, and has the advantage of high mixing efficiency. The technical solution of this invention will be described in detail below with specific examples.

[0019] Reference Figure 1 as well as Figure 2 As shown, the present invention relates to a mixing and spreading fertilizer machine for mixing microbial agents, comprising a traveling device 5, a mixing tank 6, a microbial agent spraying device 7, a driving device, and a spreading device 9. The mixing tank 6 is mounted on the traveling device 5 and has a discharge port. The microbial agent spraying device 7 includes a spray pipe 17, a power unit 4, and a storage tank 1. The power unit 4 connects the storage tank 1 and the spray pipe 17 via pipes, specifically a suction pipe 11 and a delivery pipe 13. The spray pipe 17 extends into the mixing tank 6. The driving device is also mounted on the traveling device 5 and is connected to the mixing tank 6 to drive its rotation. The spreading device 9 is also mounted on the traveling device 5 and includes a spreading disc located below the discharge port. In this embodiment, the traveling device 5 is specifically a tracked device.

[0020] For example, during operation, the walking device 5 carries the entire machine to the organic fertilizer pile. The drive device starts and drives the mixing tank 6 to rotate at a constant speed. During the rotation of the mixing tank 6, the decomposed organic fertilizer is put into the mixing tank 6, and the organic fertilizer is continuously tumbled as the tank rotates. Subsequently, the microbial agent spraying device 7 is started, and the power unit 4 pumps the microbial agent powder in the storage tank 1 through the pipeline to the spray pipe 17. The microbial agent is scattered into the mixing tank 6 through the spray pipe 17. As the mixing tank 6 continues to rotate, the mixture of microbial agent and organic fertilizer is repeatedly tumbled, thrown, and mixed in the tank, so that the microbial agent can fully contact the organic fertilizer. After the mixing meets the requirements, the mixture is discharged from the outlet of the mixing tank 6 and spread evenly on the field by a fertilizer spreading disc driven to rotate at high speed using centrifugal force.

[0021] Compared with existing technologies, this invention completely solves the problem that traditional fertilizer spreaders cannot simultaneously add and mix microbial agents, enabling the combined application of organic fertilizer and microbial agents to be mechanized, greatly improving fertilization efficiency, microbial agent utilization rate and work quality.

[0022] Specifically, in this embodiment, a reducer 2 is connected to the end of the mixing tank 6, and a hydraulic motor 3 is connected to the input end of the reducer 2. The hydraulic motor 3 is a bidirectional output hydraulic motor 3, which can output power in either forward or reverse direction according to the operation requirements. After being reduced in speed and increased in torque by the reducer 2, it drives the organic fertilizer mixing tank 6 to rotate. In addition, the power component 4 of the microbial agent spraying device 7 is specifically a centrifugal fan.

[0023] In one embodiment, more preferably, in order to further optimize the mixing uniformity of the mixing tank 6, a spiral blade is provided inside the mixing tank 6.

[0024] It should be noted that during operation, the drive device drives the mixing tank 6 to rotate forward, and the spiral blades rotate together with the tank, generating axial thrust and radial tumbling action on the organic fertilizer entering the tank. On the one hand, the spiral blades continuously push the material at the inlet into the tank, preventing material accumulation at the inlet. On the other hand, the blades lift the material along the tank wall and then drop it, causing the organic fertilizer in the mixing tank 6 to be repeatedly dispersed and reorganized. Simultaneously, the microbial agent spraying device 7 works in sync, spraying microbial agent into the mixing tank 6 to mix with the organic fertilizer being continuously tumbled by the spiral blades, achieving three-dimensional uniform mixing and significantly shortening the mixing time. After mixing is completed, the drive device is controlled to reverse, and the spiral blades rotate in the opposite direction, pushing the mixture from the inside of the tank axially towards the outlet, achieving forced discharge. Compared with existing technologies, manual discharge is not required, and the discharge is clean and thorough, reducing material residue. The spiral blade design allows the mixing tank 6 to have both mixing and discharge functions. During operation, simply controlling the drive device to switch between forward and reverse rotation allows for flexible adjustment of the mixing and discharge states. This structure greatly improves the practicality and work efficiency of the invention.

[0025] In one embodiment, more preferably, the fertilizer mixer further includes a feeding device, which comprises a movable support 12, a hopper 10, and a hydraulic telescopic assembly 14. The movable support 12 is hinged to the traveling device 5, and the hopper 10 is hinged to the movable support 12. The side of the hopper 10 is open to form a shoveling opening, and the top of the hopper 10 is also open to form a pouring opening. A hydraulic cylinder is fixedly mounted on the traveling device 5, and the end of the telescopic shaft is connected to the movable support 12. The telescopic shaft drives the hopper 10 to tilt upwards to the discharge port of the mixing tank 6 via the movable support 12.

[0026] Specifically, there are two movable support brackets 12, symmetrically arranged on both sides of the hopper 10, and two hydraulic telescopic components 14 are also provided accordingly. The movable support bracket 12 includes a main rod, one end of which is integrally connected to a crossbar, which is fixedly connected to the side of the hopper 10. The other end of the main rod is integrally connected to two connecting rods, one of which is hinged to the traveling device 5, and the other is connected to the telescopic shaft. When the hydraulic cylinder is retracted, the crossbar is horizontally positioned, the hopper 10's shoveling opening faces forward, and the hopper 10 is in a shoveling state. Operating the traveling device 5 forward will drive the hopper 10 to shovel material forward. After shoveling, the hydraulic cylinder is driven, the telescopic shaft extends forward, and the movable support bracket 12 drives the hopper 10 to flip upward. During the flipping process, the discharge opening gradually flips and aligns with the discharge port of the mixing tank 6. At this time, the material in the hopper 10 will gradually pour into the mixing tank 6, thus completing the feeding process, after which mixing can begin. Subsequently, the hydraulic cylinder retracts, the movable support bracket 12 and the hopper 10 return to their original positions, ready for the next round of shoveling. The feeding device is fully integrated into the walking device 5, eliminating the need for an additional excavator or wheelbarrow. A single person can operate the entire process of shoveling, lifting, and dumping, reducing the cost of auxiliary equipment and the intensity of manual labor.

[0027] Reference Figure 3 as well as Figure 4 As shown, in one embodiment, the overall structure of the nozzle 17 is further refined, and multiple spray nozzles are provided on the outer edge of the nozzle 17. The spray nozzles are connected to an anti-clogging component 19, which includes a pipe body 20 and an anti-clogging cap 21. The pipe body 20 is connected to the spray nozzles, and multiple through holes 22 are opened on the outer edge of the pipe body 20. The anti-clogging cap 21 is placed on the end of the pipe body 20.

[0028] It should be noted that the tube body 20 is connected to the spray nozzle. The bacterial agent gas powder flow first enters the tube body 20 from the spray nozzle, and then sprays outward from the multiple through holes 22 opened on the outer edge of the tube body 20. At the same time, the end of the tube body 20 is covered by the anti-clogging cap 21, which forces the bacterial agent and airflow to be sprayed out only from the gap between the brim of the anti-clogging cap 21 and the tube body 20.

[0029] During the rotation and mixing of organic fertilizer in the mixing tank 6, a large amount of dust, debris, and moist particles are generated. These substances are easily splashed and can penetrate the spray nozzle, causing blockage. In this embodiment, the anti-blocking cap 21 covers and blocks the direct impact of external materials. The cooperation between the brim of the anti-blocking cap 21 and the pipe body 20 forms a barrier. Even if a small amount of dust enters the brim area, the continuously blowing airflow can blow it away, preventing accumulation and blockage. Through the structural design of the anti-blocking component 19, the microbial agent spraying device 7 of the present invention can still maintain a stable spraying effect during long-term continuous operation, thereby ensuring the continuity of the uniform mixing process of the microbial agent, reducing the frequency of maintenance, and improving the overall working efficiency of the machine.

[0030] In this embodiment, it is preferable that the anti-clogging cap 21 has a brim, and the brim and the outer edge of the nozzle 17 have a spraying gap.

[0031] It should be noted that after the microbial agent is sprayed from the through-hole 22 or the end of the pipe body 20, the airflow and powder are finally sprayed out from the annular gap formed by the cap and the outer edge of the nozzle 17. Because the spray gap is a narrow annular channel, the airflow accelerates here, forming a high-speed air curtain, and the microbial agent powder is then sprayed into the mixing tank 6 at high speed and evenly. Simultaneously, the cap extends to cover the outer edge of the nozzle 17, forming a physical barrier against external splashing materials. Fertilizer particles that directly collide with the cap are deflected by the cap and cannot enter the gap. Even if fine dust accumulates near the gap, the high-speed airflow can disperse it, achieving self-cleaning and anti-clogging. Therefore, this spray gap design ensures smooth and even spraying of the microbial agent while completely preventing the potential for clogging under complex operating conditions within the mixing tank 6, ensuring the long-term stability and mixing quality of the microbial agent spraying. In this embodiment, the spray gap is specifically 1 mm.

[0032] In this embodiment, the installation structure of the nozzle 17 is further refined. One end of the nozzle 17 is provided with a bearing seat 16, which is fixedly installed inside the mixing tank 6. The nozzle 17 and the mixing tank 6 are coaxially arranged, and the nozzle 17 is rotatably connected to the mixing tank 6 through the bearing seat 16. The other end of the nozzle 17 is sealed to the pipeline through a flange 18.

[0033] During installation, the bearing housing 16 is fixedly installed inside the mixing tank 6, and the spray pipe 17 is coaxially arranged with the mixing tank 6. The spray pipe 17 is rotatably connected to the mixing tank 6 through the bearing housing 16, meaning that the outer ring of the bearing rotates with the tank body, while the inner ring of the bearing is fixed to the spray pipe 17. This ensures that when the mixing tank 6 is rotated by the drive device, the spray pipe 17 remains stationary. During the material mixing process, the spray pipe 17 and its spray nozzles maintain a constant direction, ensuring that the microbial agent is always sprayed onto a specific area inside the tank. Combined with the continuous agitation of the material, uniform coverage is achieved.

[0034] In one embodiment, the overall structure of the spreading device 9 is further refined. The fertilizer spreading disc is a commonly used agricultural fertilizer spreading device, specifically including a base, a fertilizer spreading disc, a drive motor 15, and a baffle plate. The base is fixedly mounted on the walking device 5, and the fertilizer spreading disc is rotatably connected to the base. The baffle plate surrounds the fertilizer spreading disc and is fixedly mounted on the base, with the notch formed by the baffle plate creating a fertilizer spreading window. In this embodiment, a guide trough is provided below the discharge port. The guide trough is funnel-shaped, wider at the top and narrower at the bottom, to guide the material from the discharge port into the fertilizer spreading disc.

[0035] This invention also provides a specific application scenario: At the start of the operation, the operator activates the tracked walking device 5 and drives the entire machine into the organic fertilizer pile in the hilly area. Then, the loading operation begins. The hydraulic telescopic component 14 is retracted, and the telescopic shaft retracts, causing the movable support 12 to swing downwards around the hinge point. The hopper 10 then descends to the ground, with the open shovel opening on the side of the hopper 10 close to the ground and aligned with the fertilizer pile. The walking device 5 is then slowly moved forward, and the hopper 10 uses its forward thrust to shovel the decomposed organic fertilizer into the hopper 10. After shoveling, the hydraulic telescopic component 14 is extended, and the telescopic shaft pushes the movable support 12 upwards, lifting the hopper 10. During this process, the hopper 10 maintains its shovel opening facing upwards due to its hinged connection with the movable support 12. When the movable support 12 reaches the predetermined height, the open discharge port at the top of the hopper 10 aligns with the outlet of the mixing tank 6. The organic fertilizer in the hopper 10 is poured into the mixing tank 6 under gravity through the discharge port. The hydraulic telescopic component 14 then retracts and resets, preparing for the next shoveling cycle. Repeat the above feeding process until the material in the mixing tank 6 reaches the required capacity; After feeding is completed, the drive unit is started, and the hydraulic motor 3 drives the mixing tank 6 to rotate forward through the reducer 2. The spiral blades inside the mixing tank 6 rotate synchronously with the mixing tank 6, continuously pushing the incoming organic fertilizer into the tank and breaking up the mixed materials. At the same time, the microbial agent spraying device 7 starts working, the centrifugal fan starts, and the biological microbial agent powder is drawn from the storage tank 1 through the pipeline to form an air-powder mixed flow. It is then transported through the pipeline to the spray pipe 17. The air-powder mixed flow enters the anti-clogging component 19 tube 20 from the spray port, and is sprayed out from the multiple through holes 22 on the outer edge of the tube 20 and the end. Finally, it is sprayed out at high speed at the spray gap formed between the brim of the anti-clogging cap 21 and the outer edge of the spray pipe 17. This tiny 1mm gap ensures the smooth passage of the microbial agent powder and simultaneously uses the high-speed airflow to form an air curtain to prevent the intrusion of external organic fertilizer dust or damp particles, achieving anti-clogging and self-cleaning. The microbial agent is evenly sprayed from multiple nozzles onto the surface of the tumbling organic fertilizer. Because one end of the spray nozzle 17 is coaxially connected to the mixing tank 6 via a bearing seat 16, the spray nozzle 17 remains stationary while the mixing tank 6 rotates, maintaining a constant spray direction. This allows the microbial agent to be continuously and stably dispersed onto the material at various locations within the mixing tank 6. Under the combined action of continuous tumbling by the spiral blades and multi-point spraying of the microbial agent, the organic fertilizer and microbial agent are repeatedly mixed, achieving a highly uniform state in a short time. After the mixing process is completed, the control drive device switches to reverse, the mixing tank 6 rotates in the opposite direction, and the mixed material is discharged from the outlet. The falling material is received and gathered by the guide chute, slides down the inclined side wall to the bottom narrow opening, and finally falls stably into the central area of ​​the fertilizer spreading disc with a concentrated landing point. The fertilizer spreading disc rotates at high speed under the drive of the drive motor 15, and the mixed material falling into the center of the disc is evenly spread to the soil surface in the field under the action of centrifugal force. During the fertilizer spreading process, the tracked walking device 5 can maintain a slow and uniform speed. With its large ground contact area and strong adhesion track mechanism, it can walk stably on slopes, potholes or soft ground to achieve continuous fertilizer spreading operation. This operation is completed by the operator through an integrated control handle. No additional auxiliary equipment such as excavators or wheelbarrows is required. A single person can complete the integrated operation from feeding, mixing, spraying and spreading of microbial agents, which greatly improves the mechanization level and work efficiency of the combined application of organic fertilizer and microbial agents in hilly and mountainous areas.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mixing and spreading fertilizer machine for mixing microbial agents, characterized in that, include: Walking device; A mixing tank, which is mounted on the traveling device, has a discharge port; A microbial agent spraying device, comprising a spray pipe, a power unit, and a storage tank, wherein the power unit is connected to the storage tank and the spray pipe via a pipeline, and the spray pipe extends into the mixing tank; A drive device is also mounted on the traveling device, and the drive device is connected to the mixing tank in a transmission manner to drive the mixing tank to rotate; And a spreading device, which is also mounted on the traveling device, the spreading device including a fertilizer spreading disc located below the discharge port.

2. The fertilizer spreader according to claim 1, characterized in that, The mixing tank is equipped with spiral blades inside.

3. The fertilizer spreader according to claim 1, characterized in that, It also includes a feeding device, which comprises: A movable support frame, which is hinged to the walking device; The hopper is hinged to the movable support, the side of the hopper is open to form a shovel opening, and the top of the hopper is provided with a discharge port on the side near the mixing tank. The device includes a hydraulic telescopic assembly, a hydraulic cylinder fixedly mounted on the walking device, and an end of a telescopic shaft connected to the movable bracket. The telescopic shaft drives the hopper to tilt upwards to the discharge port of the mixing tank via the movable bracket.

4. The fertilizer spreader according to claim 1, characterized in that, The walking device is a tracked device.

5. The fertilizer spreader according to claim 1, characterized in that, The outer edge of the nozzle is provided with multiple spray nozzles.

6. The fertilizer spreader according to claim 5, characterized in that, The spray nozzle is connected to an anti-clogging component, which includes: The pipe body is connected to the spray nozzle, and the outer edge of the pipe body has multiple through holes; And an anti-clogging cap, which is placed over the end of the pipe body.

7. The fertilizer spreader according to claim 6, characterized in that, The anti-clogging cap has a brim, and the brim has a spraying gap with the outer edge of the nozzle.

8. The fertilizer spreader according to claim 7, characterized in that, The spraying interval is 1 mm.

9. The mixing fertilizer spreader according to any one of claims 5-8, characterized in that, One end of the nozzle is provided with a bearing seat, which is fixedly installed inside the mixing tank. The nozzle and the mixing tank are coaxially arranged, and the nozzle is rotatably connected to the mixing tank through the bearing seat.

10. The fertilizer spreader according to claim 1, characterized in that, A guide trough is provided below the discharge port. The guide trough is funnel-shaped, wider at the top and narrower at the bottom, to guide the material from the discharge port into the fertilizer spreading disc.

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