Chemical fertilizer granulation equipment

Abstract

The utility model discloses chemical fertilizer granulation equipment which comprises a conveying device, a first cutting assembly and a second cutting assembly are arranged on the conveying device, the cutting directions of the first cutting assembly and the second cutting assembly are perpendicular to each other, and the conveying device comprises a mounting frame and a conveying belt; the first cutting assembly comprises a first driving unit, a first cutting plate is arranged at the output end of the first driving unit, and a plurality of first cutters are arranged on the first cutting plate; and the second cutting assembly comprises a second driving unit, a second cutting plate is arranged at the output end of the second driving unit, and a plurality of second cutting plates are arranged on the second cutting plate. According to the utility model, mixed slurry is cut and granulated through the first cutter and the second cutter which are perpendicular to each other, and granulation is carried out without a high tower, so that the occupied area, the construction cost and the production cost of the fertilizer granulation equipment are reduced.

Description

Technical Field

[0001] The utility model belongs to the field of fertilizer production, and specifically relates to fertilizer granulation equipment. Background Art

[0002] Fertilizer granulation technology is a key link in the fertilizer production process. It can heat and melt single-element fertilizers through certain technical means to prepare composite or mixed fertilizers with various contents. Traditional fertilizer granulation usually adopts tower high tower granulation. The equipment mixes and melts the single-element raw materials at a certain temperature through extraction, and then sprays them into the high tower through a nozzle. The mixed slurry falls from the top of the tower. The raw material particles are gradually cooled and formed during the descent by gravity and the airflow in the tower to form the required granular fertilizer. However, due to its structure and working principle, the traditional tower granulator requires a large space to arrange the tower body and related auxiliary equipment. The raw materials need to be extracted to the corresponding height, melted, and sprayed so that the particles can be cooled and formed at the bottom of the tower. Due to the cooling requirements, the overall height of the tower body is basically hundreds of meters. The whole set of equipment occupies a large area and has a high construction cost. In addition, during operation, due to the height of the granulation tower and the need to lift the materials, the operation and maintenance costs are extremely high and the risk is relatively high.

[0003] The main principle of high tower production is to use the principle of rapid crystallization after urea is melted, heat the ammonium phosphate, measure the urine and potassium slurry, and then spray it into the high tower through the nozzle to produce compound fertilizer particles. There are certain restrictions on the content of urea and ammonium phosphate in the formula. If the urea content is low and the content of other materials is high, the slurry will be viscous and have poor fluidity. It will be difficult for the granulation nozzle to spray out particles, resulting in difficulty in granulation. If the urea content is too high, the slurry will be too thin, which will affect the particle size.

[0004] In the prior art, for example, the patent document with publication number CN219722807U discloses a high tower granulator for compound fertilizer production, which granulates compound fertilizer raw materials through a high tower body. However, the high tower body occupies a large area and has a high construction cost; and during operation, the operation and maintenance costs are high because the granulation tower height and materials need to be lifted.

[0005] Therefore, a low-cost, high-utilization fertilizer granulation equipment is urgently needed to solve the above problems. Summary of the invention

[0006] In view of the problems in the prior art, the utility model proposes a fertilizer granulation equipment, which cuts the mixed slurry into granules by a first cutter and a second cutter that are perpendicular to each other, and does not need to be granulated by a high tower equipment, thereby reducing the floor space, construction cost and production cost of the fertilizer granulation equipment. In addition, there are few restrictions on the fertilizer formula, and the viscosity of the formula slurry can be controlled by adjusting the flow rate and the cutter speed to form granules.

[0007] The utility model is implemented as follows: a fertilizer granulation device comprises a transport device, on which a first cutting assembly and a second cutting assembly are sequentially arranged, the cutting directions of the first cutting assembly and the second cutting assembly are perpendicular to each other, the transport device comprises a mounting frame and a transport belt rotating around the mounting frame, and is used to transport a mixed slurry;

[0008] The first cutting assembly includes a symmetrically arranged first driving unit, an output end of the first driving unit is provided with a first cutting plate, a plurality of first cutting knives are provided on the first cutting plate, and the plurality of first cutting knives are evenly spaced and arranged along the transport direction of the transport device; the first cutting assembly is used for performing initial cutting on the mixed slurry and cutting the mixed slurry into strips.

[0009] The second cutting assembly includes a symmetrically arranged second driving unit, an output end of the second driving unit is provided with a second cutting plate, a plurality of second cutting knives are arranged on the second cutting plate, and the plurality of second cutting knives are evenly spaced and arranged in a direction perpendicular to the arrangement direction of the first cutting knives. The second cutting knives are used to perform secondary processing on the mixed slurry, cut the mixed slurry into granules, and thus achieve a granulation effect.

[0010] The mixed slurry is cut by the first cutting component and the second cutting component, thereby achieving the technical effect of realizing fertilizer granulation without the need for high-tower equipment, reducing the floor space, construction cost and maintenance cost of the fertilizer high-tower granulation equipment. In addition, the symmetrically arranged first drive unit / second drive unit can provide a more balanced power output, reduce equipment wear and uneven material cutting caused by uneven driving force, and also help improve the stability of the equipment and reduce vibration during high-speed operation, thereby improving cutting accuracy; at the same time, multiple first cutters / second cutters can act on the mixed slurry at the same time, improving cutting speed and production efficiency.

[0011] It should be noted that the present invention is not suitable for one-time granulation molding using a grid cutter. The temperature of the molten mixed slurry that has just entered the conveyor belt is relatively high, and the degree of solidification is low. It is not suitable for direct cutting of small shapes and volumes, and it is difficult to shape. Therefore, the present invention is specifically designed to first cut the mixed slurry in the initial solidification state into strips. During transportation, the mixed slurry is further cooled and solidified, and then cut into granules, thereby improving the granulation effect of the molding granulation process.

[0012] Preferably, it also includes a strong cooling device installed on the mounting frame, and the first cutting assembly, the second cutting assembly and the strong cooling device are arranged in sequence along the transport direction of the transport device; the strong cooling device is thermally connected to the conveyor belt and is used to cool the fertilizer on the conveyor belt. The strong cooling device and the first cutting assembly and the second cutting assembly are arranged in sequence along the transport direction of the transport device, ensuring that the fertilizer enters the cooling process immediately after cutting, achieving continuous cooling, improving production efficiency, and evenly cooling the mixed slurry on the conveyor belt to avoid local overheating or uneven cooling, thereby ensuring the fertilizer granulation effect and quality; at the same time, the strong cooling device can also reduce the temperature of the conveyor belt, extending the service life of the conveyor belt and the fertilizer granulation rate.

[0013] Preferably, a first scraper assembly is provided at the beginning of the transport device, the first scraper assembly includes a feed scraper, first mounting plates are symmetrically arranged at both ends of the feed scraper, each of the first mounting plates is provided with a rotatably connected adjusting screw, and the adjusting screw is screwed to the feed scraper. The height of the feed scraper can be adjusted by the adjusting screw, so that the mixed slurry on the conveyor belt forms different thicknesses, so that the fertilizer granulation equipment can produce fertilizer granules of different specifications, thereby improving the compatibility of the fertilizer granulation equipment.

[0014] Specifically, the blade of the feed scraper gradually increases from bottom to top, forming an inclined transition surface. The inclined transition surface helps the mixed slurry to be smoothly transported on the conveyor belt, preventing the mixed slurry from being disconnected when the feed scraper is at a low height; at the same time, it can also effectively prevent the mixed slurry from overflowing from the top of the feed scraper, causing the thickness of the mixed slurry to change, avoiding uneven fertilizer particle size, and improving the reliability of the feed scraper.

[0015] More preferably, the first scraper assembly and the first cutting assembly are separated by a distance along the transport direction that can accommodate at least one of the strong cooling devices, and are set as a pre-cooling station. A pre-cooling device is provided under the conveyor belt corresponding to the pre-cooling station, and the structure of the pre-cooling device is the same as that of the strong cooling device.

[0016] More preferably, a weak cooling device is further provided between the pre-cooling device and the strong cooling device, and the temperatures of the pre-cooling device, the weak cooling device and the strong cooling device are successively reduced, and the structure of the weak cooling device is the same as that of the pre-cooling device. The purpose of this design is that the temperature of the mixed slurry just entering the transportation is relatively high, and it is not suitable to be rapidly cooled in pursuit of rapid solidification, which easily forms a bottom layer of the mixed slurry that has been solidified while the upper layer is still in a molten state. Therefore, the present invention comprehensively considers the cooling hardness requirements of each station, and then combines the cooling and solidification rules of the material to design the arrangement and temperature of multiple cooling devices to ensure the granulation effect of the present invention.

[0017] Preferably, a second scraper assembly is provided at the end of the transport device, and the second scraper assembly includes a discharging scraper with an adjustable inclination angle, and the blade of the discharging scraper abuts against the conveyor belt, which can effectively prevent the fertilizer particles from sticking to the conveyor belt and reduce waste. At the same time, the discharging scraper with an adjustable inclination angle can adjust the pressure between the blade and the conveyor belt, so that the discharging scraper can adapt to different types of fertilizer particles, thereby improving the compatibility of the discharging scraper.

[0018] Preferably, the first cutting assembly and the second cutting assembly further include a plurality of guide assemblies, the guide assemblies including a guide seat and a guide rod slidably connected to the guide seat, the upper end of the guide rod being connected to the first cutting board or the second cutting board. The guide assemblies are used to guide the first cutting board / the second cutting board when the first driving unit / the second driving unit drives the first cutting board / the second cutting board to move up and down, so as to prevent the first cutting board / the second cutting board from getting stuck during movement, thereby improving the smoothness of the movement of the first cutting board / the second cutting board.

[0019] Specifically, the output ends of the first drive unit and the second drive unit are both provided with floating joints, and the floating ends of the floating joints are connected to the first cutting board or the second cutting board. The floating joints allow a margin of movement between the output end of the first drive unit / the second drive unit and the first cutting board / the second cutting board, thereby preventing the first cutting board / the second cutting board from getting stuck during the movement due to an error between the movement direction of the output end of the first drive unit / the second drive unit and the guide direction of the guide assembly, thereby improving the smoothness of the movement of the first cutting board / the second cutting board.

[0020] Preferably, the first cutting board is symmetrically provided with first pressure strips adapted to the plurality of the first cutting knives, and the first pressure strips press the first cutting knives; the second cutting board is symmetrically provided with second pressure strips adapted to the plurality of the second cutting knives, and the second pressure strips press the second pressure strips. The first pressure strip / second pressure strip makes it easier to install and remove the first cutting knives / second cutting knives, and they can be quickly replaced by simply loosening the pressure strip, so that non-professionals can also easily maintain the first cutting knives / second cutting knives, thereby improving the efficiency of later maintenance.

[0021] Preferably, the conveyor belt is made of a metal material that is resistant to high temperatures and has good thermal conductivity. The conveyor belt made of a high temperature resistant metal material can prevent the molten mixed slurry from damaging the conveyor belt, and also prevent the first cutter and the second cutter from damaging the conveyor belt when cutting the mixed slurry, thereby increasing the service life of the conveyor belt.

[0022] Beneficial effects of the utility model:

[0023] The utility model provides a fertilizer granulating device, which cuts a mixed slurry into granules by a first cutter and a second cutter perpendicular to each other, and does not need to be granulated by a high tower device, thereby greatly reducing the footprint of the device, allowing production to be carried out in a smaller space, and is easier to install and deploy in different production environments; at the same time, since there is no need to build a high tower, the production cost and maintenance cost of the fertilizer granulating device are greatly reduced, thereby reducing the cost of the fertilizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall schematic diagram of the fertilizer granulation equipment of the utility model;

[0025] Figure 2 It is a schematic diagram of the transport device of the fertilizer granulation equipment of the utility model;

[0026] Figure 3 This is a schematic diagram of the first cutting component of the fertilizer granulation equipment of the utility model;

[0027] Figure 4 This is a schematic diagram of the second cutting assembly of the fertilizer granulation equipment of the utility model;

[0028] Figure 5 The first scraper assembly of the fertilizer granulation equipment of the utility model is intended;

[0029] Figure 6 for Figure 3 An enlarged schematic diagram of point a;

[0030] Figure 7 for Figure 5 An enlarged schematic diagram of point b;

[0031] Figure 8 for Figure 2 Enlarged schematic diagram of point c.

[0032] Reference numerals:

[0033] 1. Transport device; 2. First cutting assembly; 3. Second cutting assembly; 4. Strong cooling device; 5. Pre-cooling device; 6. Weak cooling device; 11. Mounting frame; 12. Transport belt; 13. First scraper assembly; 14. Second scraper assembly; 21. First driving unit; 22. First cutting plate; 23. First cutter; 24. First pressure strip; 25. Guide assembly; 26. Floating joint; 31. Second driving unit; 32. Second cutting plate; 33. Second cutter; 34. Second pressure strip; 131. Feed scraper; 132. First mounting plate; 133. Adjusting screw; 141. Discharge scraper; 251. Guide rod; 252. Guide seat; 1311. Transition surface. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] like Figure 1-Figure 8 As shown, a fertilizer granulation device comprises a transport device 1, on which a first cutting assembly 2 and a second cutting assembly 3 are sequentially arranged, and the cutting directions of the first cutting assembly 2 and the second cutting assembly 3 are perpendicular to each other. The transport device 1 comprises a mounting frame 11 and a transport belt 12 rotating around the mounting frame 11, and is used to transport a mixed slurry in a molten state;

[0036] In this embodiment, a strong cooling device 4 is also included which is installed on the mounting frame 11. The first cutting assembly 2, the second cutting assembly 3 and the strong cooling device 4 are arranged in sequence along the transport direction of the transport device 1; the strong cooling device 4 is thermally connected to the transport belt 12, and is used to cool the fertilizer on the transport belt 12. The strong cooling device 4 and the first cutting assembly 2 and the second cutting assembly 3 are arranged in sequence along the transport direction of the transport device 1, ensuring that the fertilizer enters the cooling process immediately after cutting, achieving continuous cooling, improving production efficiency, and making the mixed slurry evenly cooled on the transport belt 12, avoiding local overheating or uneven cooling, and ensuring the fertilizer granulation effect and quality; at the same time, the strong cooling device 4 can also reduce the temperature of the transport belt 12, extending the service life of the transport belt 12 and the fertilizer granulation rate.

[0037] In this embodiment, the first scraper assembly 13 is provided at the beginning of the transport device 1, and the first scraper assembly 13 includes a feed scraper 131, and first mounting plates 132 are symmetrically arranged at both ends of the feed scraper 131. Each of the first mounting plates 132 is provided with a rotatably connected adjusting screw 133, and the adjusting screw 133 is screwed to the feed scraper 131. The height of the feed scraper 131 can be adjusted by the adjusting screw 133, so that the mixed slurry on the conveyor belt 12 forms different thicknesses, thereby improving the ability of the fertilizer granulation equipment to produce fertilizer granules of different specifications and improving the compatibility of the fertilizer granulation equipment.

[0038] Specifically, the blade of the feed scraper 131 gradually increases from bottom to top, forming an inclined transition surface 1311. The inclined transition surface 1311 helps the mixed slurry to be smoothly transported on the conveyor belt 12, and prevents the mixed slurry from being disconnected when the feed scraper 131 is at a low height; at the same time, it can also effectively prevent the mixed slurry from overflowing from the top of the feed scraper 131, causing the thickness of the mixed slurry to change, avoiding uneven fertilizer particle size, and improving the reliability of the feed scraper 131.

[0039] In this embodiment, a second scraper assembly 14 is provided at the end of the transport device 1, and the second scraper assembly 14 includes a discharging scraper 141 with an adjustable inclination angle. The blade of the discharging scraper 141 abuts against the conveyor belt 12, which can effectively prevent the fertilizer particles from sticking to the conveyor belt 12 and reduce waste. At the same time, the discharging scraper 141 with an adjustable inclination angle can adjust the pressure between the blade and the conveyor belt 12, so that the discharging scraper 141 can adapt to different types of fertilizer particles, thereby improving the compatibility of the discharging scraper 141.

[0040] The first cutting component 2 includes a symmetrically arranged first driving unit 21, and a first cutting plate 22 is provided at the output end of the first driving unit 21. A plurality of first cutting knives 23 are provided on the first cutting plate 22, and the plurality of first cutting knives 23 are evenly spaced along the transport direction of the transport device 1; the first cutting component 2 is used for performing initial cutting on the mixed slurry and cutting the mixed slurry into strips.

[0041] The second cutting assembly 3 includes a symmetrically arranged second driving unit 31, a second cutting plate 32 is provided at the output end of the second driving unit 31, a plurality of second cutters 33 are provided on the second cutting plate 32, and the plurality of second cutters 33 are evenly spaced and arranged in a direction perpendicular to the arrangement direction of the first cutters 23. The second cutters 33 are used to perform secondary processing on the mixed slurry, cut the mixed slurry into granules, and thus achieve a granulation effect.

[0042] The mixed slurry is cut by the first cutting component 2 and the second cutting component 3, thereby achieving the technical effect of realizing fertilizer granulation without the need for high tower equipment, reducing the floor space, construction cost and maintenance cost of the fertilizer granulation equipment. In addition, the symmetrically arranged first drive unit 21 / second drive unit 31 can provide a more balanced power output, reduce equipment wear and uneven material cutting caused by uneven driving force, and also help improve the stability of the equipment, reduce vibration during high-speed operation, thereby improving cutting accuracy; at the same time, multiple first cutters 23 / second cutters 33 can act on the mixed slurry at the same time, improving the cutting speed and production efficiency.

[0043] In this embodiment, the first driving unit 21 and the second driving unit 31 are both cylinders.

[0044] In this embodiment, the first cutting assembly 2 and the second cutting assembly 3 further include a plurality of guide assemblies 25, the guide assemblies 25 including a guide seat 252 and a guide rod 251 slidably connected to the guide seat 252, and the upper end of the guide rod 251 is connected to the first cutting plate 22 or the second cutting plate 32. The guide assemblies 25 are used to guide the first cutting plate 22 / the second cutting plate 32 when the first driving unit 21 / the second driving unit 31 drives the first cutting plate 22 / the second cutting plate 32 to move up and down, so as to prevent the first cutting plate 22 / the second cutting plate 32 from getting stuck when moving, thereby improving the smoothness of the first cutting plate 22 / the second cutting plate 32 when moving.

[0045] Specifically, the output ends of the first drive unit 21 and the second drive unit 31 are both provided with a floating joint 26, and the floating end of the floating joint 26 is connected to the first cutting plate 22 or the second cutting plate 32. The floating joint 26 allows a margin of movement between the output end of the first drive unit 21 / the second drive unit 31 and the first cutting plate 22 / the second cutting plate 32, thereby preventing the first cutting plate 22 / the second cutting plate 32 from getting stuck during the movement due to an error between the movement direction of the output end of the first drive unit 21 / the second drive unit 31 and the guide direction of the guide assembly 25, thereby improving the smoothness of the movement of the first cutting plate 22 / the second cutting plate 32.

[0046] In this embodiment, the first cutting plate 22 is symmetrically provided with first pressure strips 24 adapted to the plurality of first cutting knives 23, and the first pressure strips 24 press the first cutting knives 23; the second cutting plate 32 is symmetrically provided with second pressure strips 34 adapted to the plurality of second cutting knives 33, and the second pressure strips 34 press the second pressure strips 34. The first pressure strips 24 / second pressure strips 34 make the installation and removal of the first cutting knives 23 / second cutting knives 33 more convenient, and they can be quickly replaced by simply loosening the pressure strips, so that non-professionals can also easily maintain the first cutting knives 23 / second cutting knives 33, thereby improving the efficiency of later maintenance.

[0047] It should be noted that the present invention is not suitable for one-time granulation molding using a grid cutter. The temperature of the molten mixed slurry that has just entered the conveyor belt 12 is relatively high, and the degree of solidification is low. It is not suitable for direct cutting of a small shape and volume, and it is difficult to shape. Therefore, the present invention is specifically designed to first cut the mixed slurry in the initial solidification state into strips. During transportation, the mixed slurry is further cooled and solidified, and then cut into granules, thereby improving the granulation effect of the molding granulation process.

[0048] In this embodiment, the first scraper assembly 13 and the first cutting assembly 2 are separated by a distance along the transport direction that can accommodate at least one of the strong cooling devices 4, and are set as a pre-cooling station. A pre-cooling device 5 is provided under the conveyor belt corresponding to the pre-cooling station, and the structure of the pre-cooling device 5 is the same as that of the strong cooling device 4.

[0049] More preferably, a weak cooling device 6 is further provided between the pre-cooling device 5 and the strong cooling device 4, and the temperatures of the pre-cooling device 5, the weak cooling device 6 and the strong cooling device 4 are successively reduced, and the structure of the weak cooling device 6 is the same as that of the pre-cooling device 5. The effect of this design is that the temperature of the mixed slurry just entering the transportation is relatively high, and it is not suitable to be rapidly cooled in pursuit of rapid solidification, which easily forms a bottom layer of the mixed slurry that has been solidified while the upper layer is still in a molten state. Therefore, the present invention comprehensively considers the cooling hardness requirements of each station, and then designs the arrangement and temperature of multiple cooling devices in combination with the cooling and solidification rules of the material to ensure the granulation effect of the present invention.

[0050] In this embodiment, the conveyor belt 12 is made of a high temperature resistant metal material with good thermal conductivity. The conveyor belt 12 made of a high temperature resistant metal material can prevent the molten mixed slurry from damaging the conveyor belt 12, and also prevent the first cutter 23 and the second cutter 33 from damaging the conveyor belt 12 when cutting the mixed slurry, thereby increasing the service life of the conveyor belt 12.

[0051] In this embodiment, a support plate is further provided inside the mounting frame 11, and the support plate abuts against the conveyor belt 12 to prevent the conveyor belt 12 from sinking downward under the action of the first cutter 23 and the second cutter 33, thereby ensuring the cutting effect of the first cutter 23 and the second cutter 33 and improving the reliability of the conveyor belt 12.

[0052] In this embodiment, the working process of the fertilizer granulation equipment is as follows: the conveyor belt 12 transports the molten mixed slurry from the starting end of the conveying device 1 to the end. During the transportation process, the feed scraper 131 scrapes the mixed slurry to a set thickness, and then the first cutting component 2 cuts the mixed slurry into strips; the second cutting component 3 cuts the strip-shaped mixed slurry into granules; then the granular mixed slurry passes through the strong cooling device 4 to be cooled and formed; finally, the second scraper component 14 scrapes the fertilizer particles on the conveyor belt 12 to complete the discharge of the fertilizer particles.

[0053] According to the disclosure and teaching of the above specification, the technicians in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of explanation and do not constitute any limitation to the utility model.

Claims

1. A fertilizer granulation device, comprising a transport device, wherein a first cutting assembly and a second cutting assembly are sequentially arranged on the transport device, wherein the cutting directions of the first cutting assembly and the second cutting assembly are perpendicular to each other, and wherein: The transport device comprises a mounting frame and a transport belt rotating around the mounting frame, and is used to transport the mixed slurry; The first cutting assembly comprises a symmetrically arranged first driving unit, an output end of the first driving unit is provided with a first cutting plate, a plurality of first cutting knives are provided on the first cutting plate, and the plurality of first cutting knives are evenly spaced and arranged along the transport direction of the transport device; The second cutting assembly includes a symmetrically arranged second driving unit, an output end of the second driving unit is provided with a second cutting plate, a plurality of second cutting knives are provided on the second cutting plate, and the plurality of second cutting knives are evenly spaced and arranged in a direction perpendicular to the arrangement direction of the first cutting knives.

2. A fertilizer granulation equipment according to claim 1, characterized in that: It also includes a strong cooling device installed on the mounting frame, and the first cutting assembly, the second cutting assembly and the strong cooling device are arranged in sequence along the transport direction of the transport device; the strong cooling device is thermally connected to the conveyor belt and is used to cool the fertilizer on the conveyor belt.

3. A fertilizer granulation equipment according to claim 2, characterized in that: A first scraper assembly is provided at the beginning of the transport device, and the first scraper assembly includes a feed scraper, and first mounting plates are symmetrically arranged at both ends of the feed scraper. Each of the first mounting plates is provided with a rotatably connected adjusting screw, and the adjusting screw is screwed to the feed scraper.

4. A fertilizer granulation equipment according to claim 3, characterized in that: The blade of the feeding scraper gradually increases from bottom to top, forming an inclined transition surface.

5. A fertilizer granulation equipment according to claim 4, characterized in that: The first scraper assembly and the first cutting assembly are separated by a distance along the transport direction that can accommodate at least one of the strong cooling devices, and are set as a pre-cooling station. A pre-cooling device is provided under the conveyor belt corresponding to the pre-cooling station, and the structure of the pre-cooling device is the same as that of the strong cooling device. A weak cooling device is also provided between the pre-cooling device and the strong cooling device, and the temperatures of the pre-cooling device, the weak cooling device and the strong cooling device are reduced in sequence, and the structure of the weak cooling device is the same as that of the pre-cooling device.

6. A fertilizer granulation equipment according to claim 1, characterized in that: A second scraper assembly is provided at the end of the transport device. The second scraper assembly includes a discharging scraper with an adjustable inclination angle. The blade of the discharging scraper abuts against the transport belt.

7. A fertilizer granulation equipment according to claim 1, characterized in that: The first cutting assembly and the second cutting assembly further include a plurality of guide assemblies, wherein the guide assemblies include a guide seat and a guide rod slidably connected to the guide seat, and the upper end of the guide rod is connected to the first cutting plate or the second cutting plate.

8. A fertilizer granulation equipment according to claim 7, characterized in that: The output ends of the first driving unit and the second driving unit are both provided with floating joints, and the floating ends of the floating joints are connected to the first cutting board or the second cutting board.

9. A fertilizer granulation equipment according to claim 1, characterized in that: The first cutting board is symmetrically provided with first pressure strips adapted to the plurality of the first cutting knives, and the first pressure strips press the first cutting knives; the second cutting board is symmetrically provided with second pressure strips adapted to the plurality of the second cutting knives, and the second pressure strips press the second pressure strips.

10. A fertilizer granulation equipment according to claim 1, characterized in that: The conveyor belt is made of high temperature resistant material.

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