A granulation apparatus for large particle fertilizers

Abstract

The application discloses a kind of large particle fertilizer granulating equipment, it is related to the technical field of granulator, and its technical solution main point is: including granulating box and moving device, the inside middle part of granulating box is equipped with first plate body.In the present application, the raw materials are transported into the first hole on one side through the second hole, so that the raw materials form fertilizer particles; the pressure is applied to the first hole on the other side through the third hole, so that the fertilizer particles fall into the moving device; the second plate body is driven to rotate by the first driving motor, so that the second hole and the third hole can repeatedly change position and alternately work on the first hole on both sides of the first plate body, while the heating device dries the fertilizer particles during the falling process, solves the problem that the powder spraying effect of the fertilizer particles is not good due to the shielding of the scraper in the existing device, the fertilizer particles far from the powder spraying tube can be sprayed with less powder, and the problem of particle adhesion still exists.

Description

Technical Field

[0001] This invention relates to the field of granulator technology, and more specifically, to a granulation device for large-particle fertilizer. Background Technology

[0002] Microbial fertilizers, also known as bio-fertilizers, inoculants, or microbial fertilizers, are a type of fertilizer product that uses the life activities of microorganisms as its core to enable crops to obtain specific fertilizer effects. The main production method of microbial fertilizers is to mix raw materials with water or nutrient solution in a certain proportion to form a paste, and then use a granulator to granulate, dry, and screen the paste raw materials to form finished microbial fertilizer granules.

[0003] Existing granulators primarily granulate fertilizers through the interaction of scrapers and granulation plates. However, the paste-like raw materials have a certain degree of stickiness, causing some material to adhere to the scraper. This results in an uneven bottom plate of the scraper, leading to uneven granulation and affecting the quality of the finished fertilizer. Furthermore, during the granulation process, powder is often sprayed onto the surface of the scraped granules to prevent sticking. However, this powder spraying mainly occurs from top to bottom, causing the powder to accumulate on the top of the fertilizer granules, further affecting their uniformity and resulting in unevenly sized finished fertilizers.

[0004] Chinese patent CN116139776B discloses a microbial large-particle fertilizer granulation device, including a support leg. A granulation cylinder is fixedly connected to the top of the support leg. A feeding screw is rotatably connected to the middle of the left side wall of the inner cavity of the granulation cylinder. A granulation plate is fixedly connected to the right side of the inner cavity of the granulation cylinder. A fixing shaft is fixedly connected to the middle of the right end face of the feeding screw. An arc-shaped groove is formed inside the granulation cylinder, above the granulation plate. A spring is fixedly connected to the middle of the bottom surface of the arc-shaped groove, and a magnetic ball is fixedly connected to the top of the spring. A fixing rod is fixedly connected to the right end face of the granulation plate, outside the fixing shaft. An elastic strip is fixedly connected to the outer surface of the fixing rod. This invention utilizes the feeding screw to drive the rotation of the fixing shaft and the scraper, causing the scraper to rub against the elastic strip during rotation. The elastic strip can only pass through the gap between the scraper and the granulation plate, thus achieving the cleaning effect of the scraper using the elastic strip.

[0005] However, in the existing technology, the spraying pipe is not very effective at spraying fertilizer granules due to the obstruction of the scraper. Fertilizer granules far from the spraying pipe can only be sprayed with less powder, and there is still a problem of granules sticking together.

[0006] Therefore, the present invention aims to provide a large-particle fertilizer granulation device to solve the aforementioned problems. Summary of the Invention

[0007] The purpose of this invention is to provide a large-particle fertilizer granulation device to solve the problem that the existing device has poor powder spraying effect on fertilizer granules due to the obstruction of the scraper by the powder spraying pipe, and the fertilizer granules far from the powder spraying pipe can be sprayed with less powder, and the granules still stick together.

[0008] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a large-particle fertilizer granulation device, comprising a granulation box and a moving device, wherein a first plate is provided in the middle of the inner side of the granulation box, the edge of the first plate is fixedly connected to the inner side wall of the granulation box, and the first plate is parallel to the bottom of the granulation box, the first plate is provided with a plurality of first holes penetrating the top wall thickness, a first drive motor is provided in the top of the inner side of the granulation box, a first rod is provided at the movable end of the first drive motor, the first rod is perpendicular to the first plate, a second plate is provided at the end of the first rod away from the first drive motor, the second plate is parallel to the first plate, a plurality of second holes and third holes are respectively provided at the bottom of the second plate, the plurality of second holes and third holes are symmetrically arranged on both sides of the bottom of the second plate, and a feeding chamber is provided in one inner side wall of the granulation box. The outer wall of the feeding chamber is provided with a first pump body. The input end of the first pump body is connected to the inner side of the feeding chamber. The output end of the first pump body is connected to a first pipe. The end of the first pipe body away from the first pump body passes through the top wall thickness of the second plate and is connected to a second hole. The inner wall of the granulation box away from the feeding chamber is provided with a pressurizing device. A second pipe body is provided on one side of the pressurizing device. The end of the second pipe body away from the pressurizing device passes through the top wall thickness of the second plate and is connected to a third hole. The inner wall of the granulation box is provided with a plurality of heating devices, and the plurality of heating devices are all located at the bottom of the first plate. The two ends of the moving device pass through the wall thickness of the two side walls near the bottom of the granulation box and are located on the outside of the granulation box. The outer wall of the granulation box is provided with a control processing system and a power supply device. The first drive motor, the first pump body and the pressurizing device are all connected to the control processing system.

[0009] By adopting the above technical solution, the granulation box facilitates the provision of an environment for manufacturing fertilizer granules; the moving device facilitates the transportation of the manufactured fertilizer granules outside the granulation box for collection and transfer; the first plate and its first hole facilitate the formation of fertilizer granules from the raw material; the first drive motor and the first rod facilitate the rotation of the second plate, thereby changing the position of the second and third holes; the second hole facilitates the extrusion of raw material into the first hole on one side; the third hole facilitates the application of pressure to the first hole on the other side, causing the fertilizer granules in the first hole on the other side to detach from the first hole and fall into the moving device; the feeding chamber, the first pump, and the first pipe facilitate the continuous supply of raw material to the second hole, enabling continuous production of fertilizer granules; the pressurizing device and the second pipe facilitate the continuous application of pressure to the third hole; the heating device facilitates the drying of the fertilizer granules during the detachment process; the control and processing system facilitates automated control of the entire device; and the power supply device facilitates the provision of power to the entire device.

[0010] The invention is further configured such that: the moving device includes a third plate, three first baffles, several second rods, and a rocking device; the three first baffles surround the edge of the third plate, and one edge of the third plate is an opening; the two ends of the third plate penetrate the side wall thickness of the granulation box and are parallel to the first plate; one end of the several second rods is hinged at intervals to the outer side wall of the third plate, and the other end of the several second rods is hinged at intervals to the ground; and each of the outer side walls of the several second rods near the ground is provided with a limiting block.

[0011] By adopting the above technical solution, the third plate facilitates the temporary placement of fallen fertilizer granules; the three first baffles help prevent fertilizer granules from splashing and wasting raw materials; the second rod provides support for the third plate; the shaking device facilitates the horizontal shaking of the third plate, thereby moving the raw materials towards the opening for unified collection; and the limiting block limits the shaking angle of the third plate, thereby preventing the collapse of the third plate.

[0012] The present invention is further configured such that: the shaking device includes a fourth plate, a second drive motor and a counterweight, the fourth plate is disposed between two parallel first baffles and above the middle of the third plate, the second drive motor is disposed at the top of the fourth plate, and the counterweight is disposed at the output end of the fourth plate.

[0013] By adopting the above technical solution, the fourth plate facilitates the fixing of the second drive motor above the middle of the third plate, thereby making the shaking more stable; the second drive motor facilitates the rotation of the counterweight; and the rotation of the counterweight facilitates the shaking of the third plate according to the change of the center of gravity of the counterweight.

[0014] The present invention is further configured such that: the third plate is a mesh plate, and a ventilation device is provided at the bottom inner side of the granulation box, with the output end of the ventilation device located at the bottom of the third plate.

[0015] By adopting the above technical solution, the third plate is set as a mesh plate, which makes it easier to reduce the contact area between the third plate and the fertilizer particles, thereby reducing the adhesion between the third plate and the fertilizer particles, and making it easier for the ventilation device to act on the fertilizer particles; the ventilation device facilitates the air drying process on the fertilizer particles, and further reduces the adhesion between the fertilizer particles and the third plate.

[0016] The present invention is further configured such that: a plurality of limiting plates are provided at intervals on the top of the third plate, the plurality of limiting plates are parallel to the edge of the opening, the cross-section of the limiting plate is triangular, the side of the limiting plate near the opening is a vertical surface, and the side of the limiting plate away from the opening is an inclined surface.

[0017] By adopting the above technical solution, the limiting plate facilitates the unidirectional movement of fertilizer granules during shaking, allowing them to enter the collection box from the opening.

[0018] The present invention is further configured such that the sum of the number of the second hole and the third hole is equal to the number of the first hole, and the second hole and the third hole correspond one-to-one with the position of the first hole.

[0019] The present invention is further configured such that: a plurality of electrically operated telescopic rods are vertically arranged on the inner bottom of the granulation box.

[0020] By adopting the above technical solution, the extension and retraction of several electric telescopic rods can be used to strike the bottom of the third plate, causing the third plate to shake vertically, thereby further reducing the adhesion between fertilizer particles and the third plate.

[0021] The present invention is further configured such that a collection box is provided on the side of the fourth plate near the opening.

[0022] By adopting the above technical solution, the fertilizer granules can be easily collected using the collection box.

[0023] The present invention is further configured such that: the outer wall of the granulation box is provided with a feeding port, and the feeding port is connected in communication with the feeding chamber.

[0024] By adopting the above technical solution, it is easy to continuously add raw materials into the feeding chamber through the feeding port.

[0025] In summary, the present invention has the following beneficial effects:

[0026] 1. In this invention, raw materials are conveyed into the first hole on one side through the second hole, forming fertilizer granules; pressure is applied into the first hole on the other side through the third hole, causing the fertilizer granules to fall into the moving device; the second plate is rotated by the first drive motor, so that the second and third holes can repeatedly change positions to alternately work on the first holes on both sides of the first plate. At the same time, the heating device dries the fertilizer granules during the falling process, solving the problem that the powder spraying pipe in the existing device does not have a good powder spraying effect on the fertilizer granules due to the obstruction of the scraper, and the fertilizer granules far from the powder spraying pipe can be sprayed with less powder, and the particles still stick together.

[0027] 2. In this invention, the third plate is horizontally rocked by a rocking device on the third plate, and the fertilizer granules are dried by a ventilation device below the third plate, thereby reducing the adhesion between the third plate and the fertilizer granules. The fertilizer granules can move unidirectionally toward the opening and enter the collection box for collection by the action of the limiting plate and the rocking device. At the same time, the third plate is shaken vertically by the impact of the electric telescopic rod, thereby further reducing the adhesion between the fertilizer granules and the third plate. Attached Figure Description

[0028] Figure 1 This is an internal structural diagram of a large-particle fertilizer granulation device according to an embodiment of the present invention;

[0029] Figure 2 This is a top view of the second plate in a large-particle fertilizer granulation device according to an embodiment of the present invention;

[0030] Figure 3 This is a structural diagram of a moving device in a large-particle fertilizer granulation equipment according to an embodiment of the present invention;

[0031] Figure 4 This is a cross-sectional view of the second plate in a large-particle fertilizer granulation device according to an embodiment of the present invention;

[0032] Figure 5 This is a top view of the bottom of the granulation box in a large-particle fertilizer granulation device according to an embodiment of the present invention.

[0033] In the diagram: 1. Granulation box; 2. Moving device; 201. Third plate; 202. First baffle; 203. Second rod; 204. Shaking device; 2041. Fourth plate; 2042. Second drive motor; 2043. Counterweight; 3. First plate; 4. First hole; 5. First drive motor; 6. First rod; 7. Second plate; 8. Second hole; 9. Third hole; 10. Feeding chamber; 11. First pump; 12. First pipe; 13. Pressurizing device; 14. Second pipe; 15. Heating device; 16. Control and processing system; 17. Power supply device; 18. Limiting block; 19. Limiting plate; 20. Electric telescopic rod; 21. Collection box; 22. Feeding port; 23. Opening; 24. Ventilation device. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-5 The present invention will be described in further detail below.

[0035] Example: A granulation device for large-particle fertilizer, such as Figure 1-5As shown, the device includes a granulation box 1 and a moving device 2. A first plate 3 is fixedly installed in the middle of the inner side of the granulation box 1. The edge of the first plate 3 is fixedly connected to the inner wall of the granulation box 1, and the first plate 3 is parallel to the bottom of the granulation box 1. The first plate 3 has 80 first holes 4 that penetrate the top wall thickness. A first drive motor 5 is fixedly installed in the top of the inner side of the granulation box 1. The first drive motor 5 is a stepper motor, and its rotation trajectory is 180° clockwise, then 180° counterclockwise, repeating in sequence. A first... A rod 6 is perpendicular to a first plate 3. A second plate 7 is fixedly installed at the end of the first rod 6 away from the first drive motor 5. The second plate 7 is parallel to the first plate 3. Forty second holes 8 and forty third holes 9 are respectively drilled in the bottom of the second plate 7. The forty second holes 8 and forty third holes 9 are symmetrically arranged on both sides of the bottom of the second plate 7. A feeding chamber 10 is fixedly installed on one inner side wall of the granulation box 1. A first pump body 11 is fixedly installed on the outer side wall of the feeding chamber 10. The input end of the first pump body 11 is connected to the feeding chamber 1. The inner side of the granulation box 1 is connected to the first pump body 11. The output end of the first pump body 11 is connected to the first pipe body 12, which is a corrugated hose. The end of the first pipe body 12 away from the first pump body 11 passes through the top wall thickness of the second plate body 7 and is connected to the second hole 8. A pressurizing device 13 is fixedly installed on the inner side wall of the granulation box 1 away from the feeding chamber 10. A second pipe body 14 is fixedly installed on one side of the pressurizing device 13. The second pipe body 14 is a corrugated hose. The end of the second pipe body 14 away from the pressurizing device 13 passes through the top wall thickness of the second plate body 7 and is connected to the third hole 9. Four heating devices 15 are fixedly installed on the inner side wall of the granulation box 1. If all four heating devices 15 are located at the bottom of the first plate 3, the heating devices 15 are heating wires. The two ends of the moving device 2 pass through the two side walls of the granulation box 1 near the bottom and are placed on the outside of the granulation box 1. The outer side wall of the granulation box 1 is fixedly installed with a control processing system 16 and a power supply device 17. The control processing system 16 is an STM32 microcontroller, and the power supply device 17 is a battery. The first drive motor 5, the first pump body 11, and the pressurizing device 13 are all connected to the control processing system 16.

[0036] In this embodiment, the granulation box 1 provides an environment conducive to the manufacture of fertilizer granules; the moving device 2 facilitates the transport of the manufactured fertilizer granules outside the granulation box 1 for collection and transfer; the first plate 3 and the first hole 4 of the first plate 3 facilitate the formation of fertilizer granules from the raw materials; the first drive motor 5 and the first rod 6 facilitate the rotation of the second plate 7, thereby changing the positions of the second hole 8 and the third hole 9; the second hole 8 facilitates the extrusion of raw materials into the first hole 4 on one side; the third hole 9 facilitates the application of pressure to the first hole 4 on the other side, thereby... On the other side, fertilizer granules in the first hole 4 fall out of the first hole 4 and then fall into the moving device 2; the feeding chamber 10, the first pump body 11 and the first pipe body 12 facilitate the continuous delivery of raw materials to the second hole 8, enabling continuous production of fertilizer granules; the pressurizing device 13 and the second pipe body 14 facilitate the continuous application of pressure to the third hole 9; the heating device 15 facilitates the drying of fertilizer granules during the falling process; the control and processing system 16 facilitates the automated control of the entire device; and the power supply device 17 facilitates the provision of power to the entire device.

[0037] The moving device 2 includes a third plate 201, three first baffles 202, four second rods 203, and a rocking device 204. The three first baffles 202 surround the edge of the third plate 201, and one edge of the third plate 201 is set as an opening 23. The two ends of the third plate 201 penetrate the side wall thickness of the granulation box 1 and are parallel to the first plate 3. One end of the four second rods 203 is hinged at intervals to the outer side wall of the third plate 201, and the other end of the four second rods 203 is hinged at intervals to the ground. Limiting blocks 18 are fixedly installed on the outer side wall of the end of the four second rods 203 near the ground.

[0038] In this embodiment, the third plate 201 facilitates the temporary placement of fallen fertilizer particles; the three first baffles 202 help prevent fertilizer particles from splashing and wasting raw materials; the second rod 203 provides support for the third plate 201; the shaking device 204 facilitates the horizontal shaking of the third plate 201, thereby moving the raw materials towards the opening 23 for unified collection; and the limiting block 18 limits the shaking angle of the third plate 201, thereby preventing the collapse of the third plate 201.

[0039] The rocking device 204 includes a fourth plate 2041, a second drive motor 2042, and a counterweight 2043. The fourth plate 2041 is fixedly installed between two parallel first baffles 202 and placed above the middle of the third plate 201. The second drive motor 2042 is fixedly installed on the top of the fourth plate 2041. The counterweight 2043 is fixedly installed at the output end of the fourth plate 2041 and adopts a 1 / 4 arc structure.

[0040] In this embodiment, the fourth plate 2041 facilitates the fixing of the second drive motor 2042 above the middle of the third plate 201, thereby making the shaking more stable; the second drive motor 2042 facilitates the rotation of the counterweight 2043; the rotation of the counterweight 2043 facilitates the shaking of the third plate 201 according to the change of the center of the counterweight 2043.

[0041] The third plate 201 is a mesh plate. A ventilation device 24 is fixedly installed on the bottom inner side of the granulation box 1. The ventilation device 24 is a fan, and the output end of the ventilation device 24 is located at the bottom of the third plate 201.

[0042] In this embodiment, the third plate 201 is set as a mesh plate, which makes it easier to reduce the contact area between the third plate 201 and the fertilizer particles, thereby reducing the adhesion between the third plate 201 and the fertilizer particles, and making it easier for the ventilation device 24 to act on the fertilizer particles; the ventilation device 24 makes it easier to act on the fertilizer particles for air drying, and further reduces the adhesion between the fertilizer particles and the third plate 201.

[0043] The top of the third plate 201 is fixedly equipped with 12 limiting plates 19 at intervals. The 12 limiting plates 19 are parallel to the edge of the opening 23. The cross-section of the limiting plate 19 is triangular. The side of the limiting plate 19 near the opening 23 is a vertical surface, and the side of the limiting plate 19 away from the opening 23 is an inclined surface.

[0044] In this embodiment, the limiting plate 19 facilitates the unidirectional movement of fertilizer particles during shaking, allowing them to enter the collection box 21 from the opening 23.

[0045] The sum of the number of the second hole 8 and the third hole 9 is equal to the number of the first hole 4, and the second hole 8 and the third hole 9 correspond one-to-one with the position of the first hole 4.

[0046] Four electric telescopic rods 20 are vertically installed on the inner bottom of the granulation box 1.

[0047] In this embodiment, the extension and retraction of several electric telescopic rods 20 facilitates the action on the bottom of the third plate 201, striking the bottom of the third plate 201, thereby causing the third plate 201 to shake in the vertical direction, thereby further reducing the adhesion between fertilizer particles and the third plate 201.

[0048] A collection box 21 is placed on the side of the fourth plate 2041 near the opening 23.

[0049] In this embodiment, the collection box 21 facilitates the collection of the manufactured fertilizer granules.

[0050] A feeding port 22 is cut out on the outer wall of the granulation box 1, and the feeding port 22 is connected to the feeding chamber 10.

[0051] In this embodiment, the feeding port 22 facilitates the continuous addition of raw materials into the feeding chamber 10.

[0052] Working principle: First, the raw material is added into the feeding chamber 10 through the feeding port 22. The second drive motor 2042 is started to run, the heating device 15 is started to heat, and the ventilation device 24 is started to ventilate. Then, the first pump body 11 is started to transport the raw material into the second hole 8. The raw material originally enters the first hole 4 on one side of the first plate 3 through the second hole 8. Then, the first drive motor 5 is started to rotate 180° clockwise according to the preset program, which drives the second plate 7 to rotate, so that the third hole 9 is aligned with the first hole 4 on the side with the raw material. The pressurizing device 13 is controlled to work to apply pressure to the first hole 4 through the third hole 9, so that the fertilizer granules formed in the first hole 4 fall off. At the same time, the rotated second hole 8 transports the raw material into the first hole 4 on the other side. After the work on both sides is completed at the same time, the first drive motor 5 rotates 180° counterclockwise and repeats the process.

[0053] After the fertilizer particles in the first hole 4 fall out, they are dried by the heating device 15 and fall onto the third plate 201. The ventilation device 24 below the third plate 201 dries the fertilizer particles on the third plate 201. At the same time, the second drive motor 2042 drives the counterweight 2043 to rotate, thereby causing the third plate 201 to shake, so that the fertilizer particles move towards the opening 23 and finally enter the collection box 21 for collection.

[0054] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A granulation device for large-particle fertilizer, characterized in that, The device includes a granulation box (1) and a moving device (2). A first plate (3) is provided in the middle of the inner side of the granulation box (1). The edge of the first plate (3) is fixedly connected to the inner wall of the granulation box (1), and the first plate (3) is parallel to the bottom of the granulation box (1). The first plate (3) has several first holes (4) penetrating the top wall thickness. A first drive motor (5) is provided at the top inner side of the granulation box (1). A first rod (6) is provided at the movable end of the first drive motor (5). The first rod (6) and the first plate (3) are mutually... Vertically, a second plate (7) is provided at the end of the first rod (6) away from the first drive motor (5). The second plate (7) is parallel to the first plate (3). The bottom of the second plate (7) is provided with a plurality of second holes (8) and third holes (9). The plurality of second holes (8) and third holes (9) are symmetrically arranged on both sides of the bottom of the second plate (7). A feeding chamber (10) is provided on one inner side wall of the granulation box (1). A first pump body (11) is provided on the outer side wall of the feeding chamber (10). The input end of the first pump body (11) is connected to the inner side of the feeding chamber (10). The output end of the first pump body (11) is connected to the first pipe body (12). The end of the first pipe body (12) away from the first pump body (11) passes through the top wall thickness of the second plate (7) and is connected to the second hole (8). The inner wall of the granulation box (1) away from the feeding chamber (10) is provided with a pressurizing device (13). The side of the pressurizing device (13) is provided with a second pipe body (14). The end of the second pipe body (14) away from the pressurizing device (13) passes through the top wall thickness of the second plate (7) and is connected to the second hole (8). The third hole (9) is connected through. The inner side wall of the granulation box (1) is provided with several heating devices (15), and the several heating devices (15) are all located at the bottom of the first plate (3). The two ends of the moving device (2) pass through the two side walls of the granulation box (1) near the bottom and are located on the outside of the granulation box (1). The outer side wall of the granulation box (1) is provided with a control processing system (16) and a power supply device (17). The first drive motor (5), the first pump body (11) and the pressurizing device (13) are all connected to the control processing system (16).

2. The large-particle fertilizer granulation equipment according to claim 1, characterized in that, The moving device (2) includes a third plate (201), three first baffles (202), several second rods (203), and a rocking device (204). The three first baffles (202) surround the edge of the third plate (201), and one edge of the third plate (201) is set as an opening (23). The two ends of the third plate (201) penetrate the side wall thickness of the granulation box (1) and are parallel to the first plate (3). One end of several second rods (203) is hinged at intervals to the outer side wall of the third plate (201), and the other end of several second rods (203) is hinged at intervals to the ground. Each of the outer side walls of the several second rods (203) near the ground is provided with a limiting block (18).

3. The granulation equipment for large-particle fertilizer according to claim 2, characterized in that, The shaking device (204) includes a fourth plate (2041), a second drive motor (2042), and a counterweight (2043). The fourth plate (2041) is located between two parallel first baffles (202) and above the middle of the third plate (201). The second drive motor (2042) is located at the top of the fourth plate (2041), and the counterweight (2043) is located at the output end of the second drive motor (2042).

4. The granulation equipment for large-particle fertilizer according to claim 2, characterized in that, The third plate (201) is a mesh plate, and the inner bottom of the granulation box (1) is provided with a ventilation device (24), the output end of which is located at the bottom of the third plate (201).

5. The granulation equipment for large-particle fertilizer according to claim 2, characterized in that, The top of the third plate (201) is provided with a plurality of limiting plates (19) spaced apart. The plurality of limiting plates (19) are parallel to the edge of the opening (23). The cross-section of the limiting plate (19) is triangular. The side of the limiting plate (19) near the opening (23) is a vertical surface, and the side of the limiting plate (19) away from the opening (23) is an inclined surface.

6. The granulation equipment for large-particle fertilizer according to claim 1, characterized in that, The sum of the number of the second hole (8) and the third hole (9) is equal to the number of the first hole (4), and the second hole (8) and the third hole (9) correspond one-to-one with the position of the first hole (4).

7. The granulation equipment for large-particle fertilizer according to claim 1, characterized in that, Several electric telescopic rods (20) are vertically arranged on the inner bottom of the granulation box (1).

8. The granulation equipment for large-particle fertilizer according to claim 3, characterized in that, The fourth plate (2041) has a collection box (21) on the side near the opening (23).

9. The granulation equipment for large-particle fertilizer according to claim 1, characterized in that, The outer wall of the granulation box (1) is provided with a feeding port (22), which is connected to the feeding chamber (10).

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