Sowing device

Abstract

The invention provides a sowing device which comprises a feeding port, an auger, a material sowing bin, a discharging port and a material dispersing device, a material stirring rod is arranged in the material sowing bin and is driven by a motor to do circular motion, the material dispersing device comprises an evenly-distributing device, the evenly-distributing device is arranged on the material stirring rod and comprises a fixing part and a plurality of evenly-distributing plates, the fixing part is annular, and the evenly-distributing plates are arranged on the fixing part; the inner diameter shape of the uniform distribution device is matched with the outer diameter shape of the material stirring rod, and the uniform distribution device rotates along with the material stirring rod and is used for scattering the materials conveyed from the auger to the material scattering bin in the falling process so as to change the distribution condition of the materials; the sowing disc is arranged at the bottom end of the material stirring rod and rotates along with the material stirring rod, a plurality of hemispherical protrusions are arranged on the surface of the sowing disc, and the sowing disc is used for ejecting the materials falling onto the sowing disc so as to change the distribution condition of the materials on the sowing disc again and throwing the materials out to a target sowing area through centrifugal force. According to the sowing device, the motion trail of the falling materials can be changed, and the sowing uniformity is improved.

Description

Technical Field

[0001] The present application relates to the field of intelligent agricultural technology, and in particular, to a spreading device. Background Art

[0002] In modern agricultural production, the spreader is a key device for spreading agricultural materials, and its performance directly affects agricultural production efficiency and crop growth quality. The spreading device in the relevant technology has certain technical limitations: when the material enters the spreading bin through the conveying mechanism, the material often has uneven distribution during the spreading process due to the inertia formed during the conveying process and the free fall motion under the action of gravity. This unevenness may cause differences in crop growth, thereby affecting the overall yield.

[0003] Therefore, proposing a spreading device that can effectively improve spreading uniformity has become an urgent problem to be solved. Summary of the invention

[0004] The present application provides a spreading device that can disperse and eject materials transmitted from an auger, and improve the uniformity of material spreading by changing the movement trajectory of the material multiple times.

[0005] In a first aspect, a spreading device is provided, which includes a material inlet, an auger, a material spreading bin, a material outlet, and a material dispersing device. A material stirring rod is arranged in the material spreading bin, and the material stirring rod performs a circular motion under the drive of a motor at the top of the material spreading bin. The material dispersing device includes:

[0006] The averaging device is arranged on the material stirring rod, and includes a fixed part connected to the material stirring rod and a plurality of averaging plates distributed around the fixed part. The fixed part is annular, and the inner diameter of the fixed part matches the outer diameter of the material stirring rod. The averaging device rotates with the material stirring rod, and is used to break up the material transmitted from the auger to the material spreading bin during the falling process, so as to change the distribution of the material;

[0007] The spreading disc is arranged at the bottom end of the material stirring rod. As the material stirring rod rotates, a plurality of hemispherical protrusions are arranged on the surface of the spreading disc, which are used to eject the material falling to the spreading disc to change the distribution of the material in the spreading disc again, and throw the material to the target spreading area through centrifugal force.

[0008] In the above-mentioned spreading device, by arranging an equalizing device and a spreading plate on the material stirring rod in the material spreading bin, the movement trajectory of the falling material can be changed multiple times. By striking the material in the falling process with the equalizing device, the falling trajectory of the material can be changed, the direct distribution of the material can be changed, and the excessive concentration of the falling in some positions can be avoided; the hemispherical protrusions arranged on the spreading plate can make the material that has been dispersed by the equalizing device collide and eject again in the spreading plate, generating more movement trajectories, thereby further increasing the uniformity of the material distribution when it is thrown out by the spreading plate.

[0009] In combination with the first aspect, in certain implementations of the first aspect, the height range in which the equalizing device is arranged on the material stirring rod includes below the discharge port of the auger to above the discharge port of the spreading device.

[0010] Through the above implementation method, the height at which the equalizing device is set can be adjusted according to different work requirements and material types, so that the equalizing device can adapt to diverse material characteristics.

[0011] In some implementations, the dividing plate is a straight plate or a curved plate.

[0012] In the above implementation, the straight-plate averaging plate can be used in the spreading scene of materials that are relatively easy to break up, and is more suitable for processing granular materials with good fluidity. The manufacturing and maintenance costs of the straight-plate averaging plate are low, and it is suitable for large-scale applications. For materials that are easy to agglomerate and have poor fluidity, an arc-shaped averaging plate can be set. The arc-shaped averaging plate can have a stronger shear force, and can better break up the clumped materials during the rotation process, thereby improving the uniformity of spreading.

[0013] In some implementations, the dividing plate has a bent portion.

[0014] In the above implementation, the dividing plate provided with the bent portion can produce more dispersion angles, so that the material is subjected to multi-directional forces during the spreading process, avoiding material accumulation or uneven distribution, thereby further improving the distribution uniformity of the material.

[0015] In some implementations, the equalizing device further includes a baffle and / or a side plate, and the baffle and / or the side plate are provided with openings.

[0016] In the above implementation, the equalizing device provided with baffles and / or side plates can make the material have more ejection directions to change its movement trajectory, and under the action of centrifugal force, it is thrown out of the equalizing device through the openings provided on the baffles and / or side plates.

[0017] In some implementations, the equalizing device is disposed on the material stirring rod by being set or integrally formed.

[0018] In the above implementation, the set setting method can facilitate the change of the setting position of the equalizing device to adapt to different materials or working environments, and is easier to maintain and replace; the one-piece molding setting method can improve the stability and durability of the equalizing device.

[0019] In some implementations, the spreading plate includes a fixing member and a chassis. The fixing member is disposed at the center of the chassis and is used to connect the material stirring rod; and a hemispherical protrusion is disposed on the chassis.

[0020] In the above implementation, the spreading plate is connected through the material stirring rod, so that the spreading plate can rotate with the material stirring rod during operation to generate centrifugal force. The hemispherical protrusions arranged on the chassis can generate ejection at multiple angles through the spherical surface, further changing the movement trajectory of the material, and finally the material is thrown out by the centrifugal force of the spreading plate.

[0021] In some implementations, a plurality of guide plates are disposed on the bottom plate of the spreading disc to further enhance the collision of the material when the spreading disc rotates to throw the material out of the spreading disc.

[0022] In the above implementation, the provision of the guide plate helps to limit the movement range of the material, so that it generates more movement tracks in the spreading plate, thereby further increasing the uniformity of material distribution.

[0023] In some implementations, the guide plates have a variety of length specifications, and the guide plates of different length specifications are arranged at intervals.

[0024] In the above implementation, guide plates of different lengths are arranged at intervals, which can better adapt to the characteristics of different materials, optimize the movement trajectory and distribution of materials, guide materials to form diverse movement paths, avoid concentrated accumulation of materials, enhance the collision effect between materials, and improve the ejection efficiency and uniformity of material distribution.

[0025] In some implementations, the distribution density of the hemispherical protrusions on the chassis gradually decreases from the inside to the outside.

[0026] In some implementations, the diameter of the hemispherical protrusion gradually decreases from the inside to the outside.

[0027] By setting the hemispherical protrusions in the above two implementation methods, the material can collide more with the central area where the material is easy to fall, so that the material is ejected in more directions, thereby promoting a more uniform distribution of the material spread on the ground.

[0028] In some implementations, the hemispherical protrusion is disposed in the central area of ​​the spreading disc.

[0029] In the above implementation, a hemispherical protrusion is set in the central area where materials may be concentrated to make the materials more likely to collide, while no hemispherical protrusion is set in the peripheral area where materials may collide less. This can make the setting of the spreading plate simpler without affecting the function of the spreading plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of a spreading device provided in an embodiment of the present application.

[0031] Figure 2 It is a cross-sectional view of a spreading device including a material dispersing device provided in an embodiment of the present application.

[0032] Figure 3 A schematic diagram of an equal distribution device is provided for an embodiment of the present application.

[0033] Figure 4 A schematic diagram of a spreading plate provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be limiting of the present application. As used in the specification and appended claims of the present application, the singular expressions "a", "an", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication in the context.

[0035] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0036] In the description of this specification, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] In the description of this specification, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] The present application provides a spreading device, which can fully break up materials and promote the uniformity of material spreading.

[0039] The technical solution in the present application will be described below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

[0040] Figure 1 It is a schematic diagram of a spreading device provided in an embodiment of the present application.

[0041] Figure 1 It is a schematic diagram of a spreading device 100 provided in an embodiment of the present application. The spreading device 100 mainly includes a material inlet 110 , an auger 120 , a material spreading bin 130 , and a material outlet 140 .

[0042] When the sowing device 100 is working, seeds or other materials are first thrown into the material port 110. Then, the materials are transported by the auger 120. The auger 120 is responsible for continuously transporting the materials to the material sowing bin 130. After the materials enter the material sowing bin 130, due to the self-weight of the materials, the materials will fall to the discharge port 140 located at the bottom of the material sowing bin 130.

[0043] During the operation of the above-mentioned spreading device, the material may accumulate to a certain extent during the transportation of the auger 120. In addition, when the material falls from the material spreading bin 130, the falling of the material is not blocked or adjusted in any way, but only relies on the deadweight of the material, resulting in randomness in the landing position and speed of the material. This may cause the material to be concentrated in certain areas, or some areas may be less covered with materials, resulting in uneven spreading and affecting the growth of crops and sowing effects.

[0044] In order to solve the above problems, the embodiment of the present application provides a material dispersing device 200 for improving the spreading uniformity of the spreader. The material dispersing device 200 includes an equalizing device 210 and a spreading plate 220, which is intended to optimize the distribution of the material and ensure that the material can be evenly spread to a predetermined area, thereby improving the sowing effect.

[0045] The material dispersing device 200 is specifically described as follows: Figures 2 to 4 As shown. Figure 2 Shown is a cross-sectional view of a spreading device including a material dispersing device 200 provided in an embodiment of the present application.

[0046] In some embodiments, a motor 150 is provided on the top of the material spreading bin 130, the motor 150 is connected to a material stirring rod 131, the material stirring rod 131 is provided throughout the material spreading bin 130, and an equalizing device 210 is provided on the material stirring rod 131. When the motor 150 is in working state, the material stirring rod 131 can be driven to perform circular motion, and the equalizing device 210 on the material stirring rod 131 can be driven to perform circular motion together, so as to beat and throw out the material freely falling from the discharge port of the auger 120, change the falling trajectory of the material, and thus optimize the distribution of the material.

[0047] In this way, the equalizing device 210 can effectively change the distribution of the material after it falls, promote the material to be evenly distributed in the spreading bin 130, and avoid the material falling too concentratedly in some positions, so as to improve the uniformity of spreading and improve the spreading effect.

[0048] In some embodiments, the equalizing device 210 can be mounted on the material stirring rod 131 and can be tightened by screws or other means so that it can be fastened to the material stirring rod 131 .

[0049] In the above embodiment, the height of the equalizing device 210 can be adjusted to meet different work requirements and material types, thereby achieving adaptation to diverse material properties.

[0050] In some examples, the height adjustment range of the averaging device 210 is generally located in the area below the auger 120 and above the top of the discharge port 140, ensuring that it plays a key regulating role in the falling path of the material.

[0051] In other examples, the equalizing device 210 may also be integrally formed with the material stirring rod 131 .

[0052] This design simplifies the structure of the device, reduces assembly steps, and improves the stability and durability of the device.

[0053] In some embodiments, the spreading plate 220 is disposed in the discharge port 140 and connected to the bottom of the material stirring rod 131, so as to rebound the material after being dispersed by the equalizing device 210. By rebounding the material falling on the surface of the spreading plate 220 to change its distribution and movement direction again, the material spread on the ground can be evenly distributed.

[0054] Through the above implementation, the distribution of the material can be further adjusted to ensure that the material is spread to the predetermined area in a more uniform manner, thereby optimizing the sowing effect.

[0055] Figure 3 A schematic diagram of an equalization device is provided for an embodiment of the present application. Figure 3 As shown, the dividing device 210 is intended to optimize the distribution of the material and ensure uniformity during the spreading process.

[0056] In some embodiments, the equalizing device 210 includes a centrally located fixed portion 211 and an equalizing plate 212. The fixed portion 211 is generally an annular structure, and its inner diameter matches the outer diameter shape and size of the material stirring rod 131.

[0057] Through the above-mentioned implementation, the equalizing device 210 can be sleeved on the material stirring rod 131 .

[0058] In some embodiments, the dividing plates 212 include multiple pieces and are disposed around the fixing portion 211 .

[0059] In the above-mentioned embodiment, providing a plurality of equalizing plates 212 helps to increase the contact area between the material and the equalizing device. When the material stirring rod 131 drives the equalizing device 210 to perform circular motion under the drive of the motor 150, the equalizing plate 212 can rotate around the material stirring rod 131, and hit the material falling into the range of the equalizing device 210, changing its motion trajectory, thereby improving the distribution of the material.

[0060] In some embodiments, the dividing plate 212 may be configured in different shapes.

[0061] In some examples, such as Figure 3 As shown in (a), the dividing plate 212 may be a vertically arranged rectangular straight plate, one end of which is connected to the fixing portion 211 .

[0062] For example, in Figure 3 In (b), the dividing plate 212 may also be provided with a bending portion 2121 .

[0063] In some examples, the dividing plate 212 may also be arc-shaped, and the bending portion 2121 may also be arc-shaped.

[0064] In the above example, when the averaging plate is set as a straight plate, it may be more suitable for the sowing scene of materials that are easily broken up, and performs well when processing granular materials with good fluidity. For example, in an agricultural seeder, a straight averaging plate can evenly spread seeds into the field, ensuring uniformity of seed distribution and sowing efficiency. In addition, the manufacturing and maintenance costs of a straight averaging plate are low, making it suitable for large-scale applications.

[0065] For spreading of materials that are prone to agglomeration or have poor fluidity, a curved equalizer plate design can be used. The curved design can generate stronger shear force, effectively breaking up agglomerated materials and improving the uniformity of spreading. For example, in the spreading of fertilizers or powdered materials, the curved equalizer plate can better overcome the stickiness and agglomeration of the materials and ensure that the materials can be evenly distributed.

[0066] In some examples, the provision of the bending portion further enhances the functionality of the averaging plate. By providing the bending portion on the averaging plate, more scattering angles can be generated, so that the material is subjected to multi-directional forces during the spreading process, avoiding material accumulation or uneven distribution, thereby further improving the uniformity of material distribution.

[0067] It should be understood that the number of the bending portions of the dividing plate 212 is not limited. Figure 3 On the basis of (b), it can also include two or more bending parts, which is not limited in the present application.

[0068] In some embodiments, the evenly distributing device 210 further includes a baffle 213 and a side plate 214 , so as to further improve the spreading uniformity of the evenly distributing device 210 .

[0069] In some examples, such as Figure 3 As shown in (c), the equalizing device 210 includes a baffle 213 and a side plate 214. The equalizing plate 212 is connected to the side plate 214. An opening 215 is provided on the side plate 214 to allow the material to be thrown out from the opening 215.

[0070] In these example cases, after the material enters the equalizing device 210, the material will have at least two movement trajectories: part of the material will be ejected upward due to falling directly onto the baffle 213 of the equalizing device 210, and will return to the material spreading bin 130 to fall again; or, the equalizing device 210 and the material stirring rod 131 will make a circular motion together, and the material will be affected by the centrifugal force generated by the equalizing device and thrown toward the equalizing plate 212 or the side plate 214.

[0071] After the material is thrown onto the balancing plate 212 or the side plate 214, the material will be ejected and two movement trajectories will appear: the first is that part of the material will be thrown into the opening 215 on the side plate 214, and then leave the balancing device 210 and fall into the spreading plate 220 in the discharge port 140; the other is thrown out again under the action of centrifugal force and continues to move in the balancing device 210, repeating the above ejection process until it enters the opening 215 on the side plate 214 and leaves the balancing device 210.

[0072] In some embodiments, as shown in (d) of FIG. 3 , the baffle 213 may also be configured as a funnel-shaped structure that gradually contracts from top to bottom, wherein the bottom opening is lower than the top, and an equalizing plate 212 is disposed between the bottom and the fixing portion 211. The baffle 213 with an inclined angle can cause the material to be ejected on the baffle 213. When the material falls to the bottom, due to the circular motion of the equalizing device 210, the equalizing plate 212 can further hit the material, causing the movement trajectory to change, thereby promoting uniform distribution of the material.

[0073] In this way, the distribution of materials is more even and the sowing effect is more precise, which improves the sowing efficiency and agricultural production benefits.

[0074] In some embodiments, the maximum diameter of the dividing plate 212 is slightly smaller than the inner wall diameter of the material spreading bin 130 .

[0075] Such a design enables the falling materials to fall completely into the rotation range of the equalizing device 210, thereby effectively beating the materials during their falling process, causing the materials to be ejected, and further optimizing the distribution of the materials.

[0076] Figure 4 A schematic diagram of a spreading plate provided in an embodiment of the present application.

[0077] like Figure 4 As shown, the spreading disc 220 is intended to further optimize and spread the material dropped from the evenly distributing device 210 .

[0078] In some embodiments, the spreading plate 220 is composed of a fixing member 221 and a bottom plate 222. The spreading plate 220 is disposed at the bottom of the material stirring rod 131 through the fixing member 221 to ensure that it can operate stably and cooperate with other components during operation.

[0079] In some embodiments, a plurality of guide plates 223 and a plurality of hemispherical protrusions 224 are provided on the chassis 222. When the material flows into the spreading plate 220, the presence of the guide plates 223 and the hemispherical protrusions 224 causes the material to collide and eject in the spreading plate 220 to change its distribution.

[0080] According to the above embodiment, the uneven distribution of materials caused by gravity factors that may be concentrated in a fixed area can be effectively avoided, so that the materials can be spread more evenly on the ground after being ejected. In addition, the setting of the guide plate 223 helps to limit the movement range of the materials, so that they have more movement tracks in the spreading plate, thereby further increasing the uniformity of material distribution.

[0081] In the above embodiment, the hemispherical protrusions 224 can enable the material to rebound in more directions when colliding, thereby helping the material to be ejected and moved more efficiently in the spreading disc.

[0082] In some embodiments, the guide plate 223 disposed on the bottom plate 222 may have two or more length specifications.

[0083] For example, when the guide plates 223 have two or more length specifications, the guide plates 223 of different length specifications may be arranged at intervals.

[0084] In the above embodiment, guide plates of different lengths are arranged at intervals, which can better adapt to the characteristics of different materials, optimize the movement trajectory and distribution of materials, guide materials to form diverse movement paths, avoid concentrated accumulation of materials, enhance the collision effect between materials, and improve the ejection efficiency and uniformity of material distribution.

[0085] In some examples, the distribution density and diameter of the plurality of hemispherical protrusions 224 may be different, and the specific distribution method is adjusted according to the material type and the spreading requirements.

[0086] For example, for the central portion of the spreading plate 220 where materials are easy to fall, the distribution density of the hemispherical protrusions 224 is higher than that of the hemispherical protrusions 224 in the peripheral area, or the diameter of the hemispherical protrusions 224 in the central portion is larger than that of the hemispherical protrusions 224 in the peripheral area.

[0087] In this case, the material can collide more with the central area where the material is likely to fall, so that the material is ejected in more directions, promoting a more uniform distribution of the material spread on the ground.

[0088] In some embodiments, the hemispherical protrusion 224 on the spreading disc 220 is only located at the center of the spreading disc.

[0089] In this case, a hemispherical protrusion 224 is provided in the central area where materials may be concentrated to make the materials more likely to collide, while a hemispherical protrusion 224 is not provided in the peripheral area where materials may collide less. This can make the arrangement of the spreading plate 220 simpler without affecting the above-mentioned functions of the spreading plate 220.

[0090] In some embodiments, when the balancing device 210 includes a baffle 213 , after the material falls into the spreading plate 220 , due to the catapulting effect of the hemispherical protrusions 224 on the spreading plate 220 , the material will be bounced up and hit the lower bottom surface of the baffle 213 of the balancing device 210 again.

[0091] During this process, the materials are ejected and disrupted again until they are finally thrown out of the spreading plate 220 and leave the discharge port 140, completing the spreading operation. In this way, the spreading plate 220 can effectively enhance the movement trajectory of the materials and make the materials more evenly distributed in the spreading area, thereby ensuring the stability and accuracy of the sowing effect.

[0092] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems and devices described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0093] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0094] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A spreading device, characterized in that: The spreading device includes a material inlet, an auger, a material spreading bin, a material outlet and a material dispersing device. A material stirring rod is arranged in the material spreading bin. The material stirring rod performs circular motion under the drive of the motor at the top of the material spreading bin. The material dispersing device includes: An averaging device, which is arranged on the material stirring rod and includes a fixed portion connected to the material stirring rod and a plurality of averaging plates distributed around the fixed portion, wherein the fixed portion is annular, and the inner diameter of the fixed portion matches the outer diameter of the material stirring rod. The averaging device rotates with the material stirring rod and is used to break up the material transmitted from the auger to the material spreading bin during the falling process to change the distribution of the material; A spreading plate is arranged at the bottom end of the material stirring rod and rotates with the material stirring rod. A plurality of hemispherical protrusions are arranged on the surface of the spreading plate, which are used to eject the material dropped onto the spreading plate to change the distribution of the material on the spreading plate again, and throw the material to the target spreading area through centrifugal force.

2. The spreading device according to claim 1, characterized in that The height range in which the equalizing device is arranged on the material stirring rod includes from below the discharge port of the auger to above the discharge port of the spreading device.

3. The spreading device according to claim 2, characterized in that The dividing plate is a straight plate or an arc-shaped plate.

4. The spreading device according to claim 3, characterized in that The dividing plate has a bending portion.

5. The spreading device according to any one of claims 1 to 4, characterized in that The equal distribution device further comprises a baffle and / or a side plate, and the baffle and / or the side plate are provided with openings.

6. The spreading device according to any one of claims 1 to 4, characterized in that The equalizing device is arranged on the material stirring rod in the form of a sleeve or an integrally formed one.

7. The spreading device according to claim 1, characterized in that The spreading plate includes a fixing part and a chassis. The fixing part is arranged at the center of the chassis and is used to connect the material stirring rod; the hemispherical protrusion is arranged on the chassis.

8. The spreading device according to claim 7, characterized in that A plurality of guide plates are arranged on the bottom plate of the spreading plate, so as to further enhance the collision of the material in the process of throwing the material out of the spreading plate when the spreading plate rotates.

9. The spreading device according to claim 8, characterized in that The guide plates have a variety of length specifications, and the guide plates of different length specifications are arranged at intervals.

10. A spreading device according to any one of claims 7 to 9, characterized in that The distribution density of the hemispherical protrusions on the chassis gradually decreases from the inside to the outside.

11. A spreading device according to any one of claims 7 to 9, characterized in that The diameter of the hemispherical protrusion on the chassis gradually decreases from the inside to the outside.

12. A spreading device according to any one of claims 7 to 9, characterized in that The hemispherical protrusion is arranged in the central area of ​​the spreading disc.

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