Dipotassium phosphate compound fertilizer production system

Abstract

The invention relates to the field of chemical production, in particular to a dipotassium phosphate compound fertilizer production system which comprises a pulverizer, a stirrer, a granulator, dehumidification equipment, a dryer, a cooler, a coating machine and packaging equipment. And the upper rotating plate is rotationally connected with a dehumidification outer cylinder, a dehumidification inner cylinder is arranged in the dehumidification outer cylinder, a discharging cavity is formed between the dehumidification outer cylinder and the dehumidification inner cylinder, and filtering holes are formed in the dehumidification outer cylinder and the dehumidification inner cylinder. The dehumidifying outer cylinder is rotated to a designated position, a gear ring on the dehumidifying outer cylinder is engaged with a gear, a motor operates to drive the gear to rotate, the gear ring drives the dehumidifying outer cylinder to rotate, and dehumidification is performed through centrifugal force generated by rotation, so that the drying time of the dryer is shortened, and abrasion among fertilizer particles is reduced; the influence on the body health of production personnel due to more dust generated by the compound fertilizer production system in the later period is avoided.

Description

Technical Field

[0001] This invention relates to the field of chemical production, specifically to a dipotassium phosphate compound fertilizer production system. Background Technology

[0002] Compound fertilizer is a type of fertilizer containing multiple nutrients to provide plants with the various nutrients they need for growth. It typically includes nitrogen, phosphorus, potassium, and other trace elements. The advantage of compound fertilizer is that it can provide plants with a variety of nutrients to meet their needs at different growth stages.

[0003] When producing compound fertilizer, it is necessary to prepare a variety of raw materials and mix them evenly according to a certain formula ratio. Then, the mixed raw materials are crushed and put into a rotary drum granulator to produce compound fertilizer granules. The produced granules are then dried and cooled, then screened by a drum screener, and the screened granules are coated. Finally, the produced compound fertilizer is packaged.

[0004] During the granulation and mixing stages, water is typically added to help form granules or uniformly mix different components. In some coastal cities, the high humidity, coupled with the hygroscopic nature of potassium diphosphate, results in high moisture content in the produced granules. Therefore, the granules need to be thoroughly dried by turning them over. However, due to the high moisture content, the dryer cannot completely dry all the granules in a short time, requiring repeated stirring and drying. This prolonged drying time causes the fertilizer granules to collide with each other for an extended period. Since potassium diphosphate compound fertilizer typically does not have high viscosity, this leads to increased granule wear. On one hand, the wear of the compound fertilizer granules reduces the output of the compound fertilizer production system; on the other hand, it increases the dust generated in the later stages of drying, leading to an overall increase in dust production in the potassium diphosphate compound fertilizer production system, which can negatively impact the health of production personnel.

[0005] Therefore, a dipotassium phosphate compound fertilizer production system is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a dipotassium phosphate compound fertilizer production system to solve the problem that the high moisture content of the granules requires the dryer to operate for a long time, which increases the wear between fertilizer granules and reduces the output of the compound fertilizer production system. At the same time, it solves the problem that excessive wear between fertilizer granules leads to an increase in the amount of dust generated by the entire dipotassium phosphate compound fertilizer production system, which affects the health of production personnel.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A potassium diphosphate compound fertilizer production system includes a crusher, a mixer, a granulator, a dehumidifier, a dryer, a cooler, a coating machine, and a packaging machine. The dehumidifier includes a shell with an upper rotating plate rotatably connected to the top of the shell. An outer dehumidifier cylinder is rotatably connected to the upper rotating plate, and an inner dehumidifier cylinder is provided inside the outer dehumidifier cylinder. A discharge chamber is formed between the outer and inner dehumidifier cylinders, and filter holes are provided on both the outer and inner dehumidifier cylinders. A servo motor is installed on the shell, and the output shaft of the servo motor is fixedly installed to the upper rotating plate. A drive assembly is installed on one side of the shell, and a gear ring is fixedly installed at the bottom of the outer dehumidifier cylinder. When the servo motor drives the upper rotating plate to rotate to a specified angle, the gear ring connects to the drive assembly.

[0009] In use, multiple raw materials are crushed by a crusher, then the crushed material is put into a mixer for mixing, and then the mixed material is sent to a granulator for granulation. The wet granules are then dried by a dryer, and finally the dried granules are cooled and packaged. To reduce drying time, the wet granules can be put into the discharge chamber. At this time, the drive component drives the entire dehumidification outer cylinder and dehumidification inner cylinder to rotate, which causes the material in the discharge chamber to generate centrifugal force. Because the dehumidification outer cylinder has multiple filter holes, the liquid in the discharge chamber will diffuse outward due to centrifugal force, thus drying the wet material. It should be noted that the pore diameter of the filter holes is smaller than the diameter of the granules, which allows some unqualified granules to be discharged and also allows the material in the discharge chamber to be discharged quickly.

[0010] The dehumidifier outer cylinder has multiple lower rotating plates installed at its bottom. Multiple holes for the outer cylinder to rotate are provided on the lower rotating plates. Conical baffles are installed on the lower rotating plates and are fitted onto the multiple dehumidifier outer cylinders. The conical baffles are located below the filter holes of the outer cylinders and above the gear ring. Both the lower rotating plates and the conical baffles have annular drainage grooves located on one side of the outer cylinders. The drainage grooves on the rotating plates are larger than those on the conical baffles. Multiple annularly arranged baffles are installed on a fixed pipe between the rotating plates and the conical baffles. An arc-shaped connecting plate is fixedly installed between adjacent baffles and slides within the housing. A fixed plate is fixedly installed within the housing and is rotatably connected to the lower rotating plates.

[0011] By setting up three dehumidifying outer cylinders, one is used for feeding while the other two are used for spin-drying and discharging, allowing for uninterrupted production of granular materials during dehumidification. This ensures that the materials added to the production line do not interfere with the system's efficiency. Multiple dehumidifying outer cylinders rotate around the center of the upper rotating plate via upper and lower rotating plates. Because gear rings are installed on the dehumidifying outer cylinders and need to connect to the drive assembly, and because the outer cylinders discharge liquid, it is necessary to isolate the gear rings to prevent liquid splashing onto the gears and interfering with the normal operation of the equipment. Baffles and arc-shaped connecting plates separate the outer dehumidifier cylinders, preventing the liquid generated by the high-speed rotation of the outer dehumidifier cylinders from interfering with adjacent outer dehumidifier cylinders. Because the lower rotating plate and the conical baffle are both equipped with annular drainage channels, the generated liquid can flow out through the drainage channels, avoiding secondary pollution of the particles in the storage chamber. At the same time, the conical baffle can also better guide the splashed liquid into the drainage channels. By increasing the number of dehumidifier cylinders and drainage channels, the dehumidification efficiency is guaranteed, the drying time is reduced, and the excessive dust generated in the subsequent production process of the compound fertilizer production system is reduced, ensuring the dust content in the production workshop.

[0012] The drive assembly includes a motor, gears, and a gearbox. The motor is fixedly mounted on the fixed plate, and the gear is fixedly mounted on the output shaft of the motor. When the dehumidifying outer cylinder rotates to a designated position, the gear meshes with the gear ring. A gearbox is installed between the lower rotating plate and the conical partition plate. A reduction gear set is installed inside the gearbox, and the reduction gear set meshes with multiple gear rings.

[0013] During production, a servo motor drives the upper rotating plate to rotate, which in turn drives multiple dehumidifying outer cylinders to rotate, moving them to their respective positions. Since there are three dehumidifying outer cylinders, the servo motor rotates 120° each time. When a dehumidifying outer cylinder reaches its designated position, the gear ring installed on it meshes with the gear, and the motor drives the gear to rotate. The rotating gear, through the meshing gear ring, drives one of the dehumidifying outer cylinders to rotate. The centrifugal force generated by the rotation dehumidifies the cylinders. Simultaneously, because all three dehumidifying outer cylinders are connected by a reduction gear set, the rotation of one cylinder drives the other two to rotate as well. This rotation ensures that the material is evenly fed into the discharge chamber, guaranteeing uniform distribution of the granules. At the same time, the rotation of the other dehumidifying outer cylinder during discharge allows the granules accumulated in the discharge chamber to detach quickly. By reducing the humidity of the granules, the operating time of the dryer is reduced, minimizing wear between fertilizer granules and preventing excessive dust generation in the later stages of the compound fertilizer production system, which could negatively impact the health of production personnel.

[0014] A plurality of evenly spaced partition plates are fixedly installed between the outer dehumidifying cylinder and the inner dehumidifying cylinder, and the length of the partition plates is consistent with the height of the outer dehumidifying cylinder and the inner dehumidifying cylinder.

[0015] The isolation plate divides the discharge chamber into multiple areas, preventing the compound fertilizer granules from moving within the chamber when the dehumidifying outer cylinder rotates at high speed. This prevents collisions and wear on the compound fertilizer granules. Simultaneously, the rotating dehumidifying outer cylinder ensures the compound fertilizer granules fall evenly into the discharge chamber during feeding, preventing the isolation plate from affecting normal feeding. This maintains the stability of the rotating dehumidifying outer cylinder, avoids wear on the compound fertilizer granules during rotation, prevents a decrease in yield, and ensures the output of the compound fertilizer production system.

[0016] The jet assembly includes an air pump, a transmission belt, a cylinder, and an air inlet pipe. The air pump is fixedly mounted on the fixed plate. A transmission belt is installed between the input shaft of the air pump and the output shaft of the motor. A circular hole is opened on the fixed plate. A cylinder is fixedly mounted on the circular hole. An air inlet pipe is installed between the cylinder and the air pump. The filter hole on the dehumidifying inner cylinder is funnel-shaped, with the smaller end facing the discharge chamber.

[0017] The operation of the dehumidifying outer cylinder requires the rotation of the motor output shaft, which in turn drives the air pump via a transmission belt. The air pump draws external gas into the cylinder. When the dehumidifying outer cylinder rotates to a designated position, the dehumidifying inner cylinder connects with the outer cylinder, allowing gas to enter the inner cylinder through the outer cylinder. Because the discharge chamber is located between the outer and inner cylinders, the gas can only be discharged through the discharge chamber. The airflow pushes the moisture near the inner cylinder outwards, and the centrifugal force generated by the rotation of the outer cylinder can drain most of the moisture in the discharge chamber. At the same time, because the gas enters from the end with the larger aperture and exits from the end with the smaller aperture, the flow rate of the discharged gas increases. This increased flow rate indirectly improves the dehumidification effect of the outer cylinder. By reducing the humidity of the particles, the drying efficiency of the dryer is improved, the wear between fertilizer particles is reduced, and the output of the compound fertilizer production system is guaranteed. At the same time, it avoids the increase of dust generated in the later stages of the compound fertilizer production system, which could affect the health of the production personnel.

[0018] It should be noted that the air pump's inlet pipe is equipped with a filter cartridge to prevent moisture from entering and interfering with the dehumidification efficiency of the dehumidification device. Furthermore, the inlet pipe can be installed inside the dryer, allowing the heat generated by the dryer to heat the compound fertilizer granules in the discharge chamber. This ensures that the dehumidified granules can quickly heat up upon entering the dryer, indirectly improving the drying efficiency of the drying equipment and guaranteeing the output of the compound fertilizer production system. Simultaneously, it avoids excessive dust generated later in the compound fertilizer production system, which could negatively impact the health of production personnel.

[0019] A support frame is fixedly installed on the housing, and an electric telescopic rod is installed on the support frame. A push column is rotatably connected to the movable end of the electric telescopic rod. A circular plate is fixedly installed on the push column, and a ring-shaped connecting rod is fixedly installed on the push column. A pressure plate is fixedly installed on the end of the connecting rod away from the push column. The pressure plate and the circular plate are located on the same horizontal plane. When the push column descends, the circular plate slides inside the dehumidifying inner cylinder, and the pressure plate slides inside the discharge chamber.

[0020] After the dehumidifying outer cylinder rotates to the designated position, the movable end of the electric telescopic rod pushes the push column downward. The downward-moving push column drives the circular plate and the pressure plate downward through the connecting rod. The downward-moving pressure plate flattens the compound fertilizer granules in the discharge chamber, preventing them from shaking during the rotation of the dehumidifying outer cylinder and affecting the stability of the equipment. At the same time, because centrifugal force causes the granules to move outward, they collide with the inner wall of the dehumidifying outer cylinder. The downward pressure of the pressure plate prevents the compound fertilizer granules from shaking, reducing wear between fertilizer granules and ensuring the output of the compound fertilizer production system. At the same time, it avoids the increase of dust generated in the later stages of the compound fertilizer production system, which could affect the health of production personnel.

[0021] Meanwhile, when there is insufficient particulate matter in the discharge chamber, the gas will be discharged directly through the filter holes and cannot pass through the discharge chamber for cleaning. Therefore, it is necessary to use a circular plate to descend to a designated position to reduce the internal space of the dehumidification cylinder, so that the gas cannot be discharged through the filter holes above, ensuring the airtightness of the dehumidification cylinder and indirectly improving the dehumidification efficiency of the dehumidification cylinder.

[0022] An annular filter screen is provided on the side of the fixed plate near the motor. A first liquid storage box covering the annular filter screen is fixedly installed at the bottom of the fixed plate. Two symmetrically arranged arc-shaped grooves are provided on the side of the fixed plate near the motor. When the rotating block rotates to a set position, the arc-shaped grooves coincide with the drain grooves. A second liquid storage box covering the arc-shaped grooves is fixedly installed at the bottom of the fixed plate. A connecting pipe connects the first liquid storage box and the second liquid storage box.

[0023] The compound fertilizer granules entering the discharge chamber can be drained through the bottom annular filter screen, allowing the drained liquid to enter the first storage box below. The conical baffle allows the liquid discharged from the dehumidification outer cylinder to flow smoothly into the arc-shaped groove. At the same time, because the arc-shaped groove and the discharge groove overlap, the liquid can enter the second storage box. The liquid is drained away through the first and second storage boxes, preventing the generated moisture from interfering with the normal dehumidification of the dehumidification device and ensuring the output of the potassium diphosphate compound fertilizer production system.

[0024] The shell has a crescent-shaped feed inlet, a feed hopper is fixedly installed on the feed inlet, and a conical discharge hopper is installed at the bottom of the fixed plate. The conical discharge hopper is installed on the side away from the feed hopper and the cylinder.

[0025] The crescent-shaped feed inlet allows the upper rotating plate to drive multiple dehumidifying outer cylinders to rotate. The upper rotating plate can block the feed inlet, allowing the conveyor belt to continuously transport compound fertilizer granules into the feed hopper. At this time, the feed inlet is blocked and cannot discharge material, ensuring the stability of the equipment operation. At the same time, the crescent-shaped feed inlet can maximize the feeding speed of the discharge chamber, indirectly ensuring that the output of the compound fertilizer production system is not affected.

[0026] Magnets are installed on both the circular plate and the pressure plate. An annular groove is provided on the fixing block. An annular rubber ring is fixedly installed in the annular groove. An iron ring is fixedly installed in the rubber ring. A sealing groove that mates with the annular rubber ring is provided at the bottom of the dehumidifying inner cylinder.

[0027] Because magnets are installed on both the circular plate and the pressure plate, a magnetic force is generated on them after they enter the outer and inner dehumidification cylinders. This magnetic force causes the iron ring inside the rubber ring to enter the sealing groove, making the rubber ring press against the sealing groove, ensuring the seal between the circular cylinder and the inner dehumidification cylinder, and improving dehumidification efficiency. At the same time, when the circular plate and the pressure plate leave the outer and inner dehumidification cylinders, the iron ring will return to its original position, reducing wear between fertilizer particles and preventing the compound fertilizer production system from generating more dust in the later stages, which could affect the health of production personnel.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] 1. The feed hopper feeds the compound fertilizer granules to be dehumidified into the discharge chamber. The servo motor drives the upper rotating plate to rotate, which in turn drives the three dehumidifying outer cylinders to rotate, moving them to their respective positions. When one of the dehumidifying outer cylinders rotates to the designated position, the gear ring installed on it meshes with the gear. The motor runs, driving the gear to rotate. The rotating gear, through the meshing gear ring, drives the dehumidifying outer cylinder to rotate. The centrifugal force generated by the rotation dehumidifies, reducing the drying time of the dryer, reducing wear between fertilizer granules, ensuring the output of the compound fertilizer production system, and at the same time avoiding the increase of dust generated in the later stages of the compound fertilizer production system, reducing the impact on the health of production personnel.

[0030] 2. The operation of the dehumidifying outer cylinder requires the rotation of the motor output shaft, which in turn drives the air pump via a transmission belt. The air pump draws external gas into the cylinder. When the dehumidifying outer cylinder rotates to a designated position, the dehumidifying inner cylinder connects with the outer cylinder, allowing gas to enter the inner cylinder through the outer cylinder. Since the discharge chamber is located between the outer and inner cylinders, the gas can only be discharged through the discharge chamber. The airflow pushes the moisture near the inner cylinder outwards, allowing the centrifugal force generated by the rotation of the outer cylinder to drain most of the moisture from the discharge chamber. Applying positive pressure assists the dehumidifying outer cylinder in dehumidification, improving drying efficiency, reducing wear between fertilizer particles, increasing the yield, ensuring the output of the compound fertilizer production system, and reducing dust generated during the compound fertilizer production process.

[0031] Third, all three dehumidifying outer cylinders are connected by a reduction gear set, so when one rotates, it can drive the other two to rotate. This rotation allows the material to be fed evenly into the discharge chamber, ensuring that the granules are evenly distributed within the discharge chamber. At the same time, the rotation of the other dehumidifying outer cylinder during discharge allows the granules accumulated in the discharge chamber to be quickly released, enabling the equipment to operate stably and continuously. This indirectly improves the operating efficiency of the dryer, reduces wear between fertilizer granules, ensures the output of the compound fertilizer production system, and reduces the dust generated in the later stages of the compound fertilizer production system, ensuring that the health of production personnel is not affected. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0033] Figure 2 This is a schematic diagram of the top structure of the dehumidification device in this invention;

[0034] Figure 3 This is a schematic diagram of the internal structure of the shell in this invention;

[0035] Figure 4 This is an enlarged structural schematic diagram of the dehumidification outer cylinder in this invention;

[0036] Figure 5 This is a schematic diagram of the bottom structure of the shell in this invention;

[0037] Figure 6 This is an enlarged structural schematic diagram of the conical partition in this invention;

[0038] Figure 7 This is a schematic diagram of the gearbox structure in this invention;

[0039] Figure 8 This is a schematic diagram showing the location and shape of the feed inlet in this invention;

[0040] Figure 9This is an enlarged structural schematic diagram of the rubber ring in this invention.

[0041] In the diagram: 1. Shell; 2. Servo motor; 3. Feed hopper; 4. Support frame; 5. Electric telescopic rod; 6. Push column; 7. Connecting rod; 8. Pressure plate; 9. Circular plate; 12. Gear; 13. Motor; 14. Upper rotating plate; 15. Dehumidifying outer cylinder; 16. Dehumidifying inner cylinder; 17. Isolation plate; 18. Conical discharge hopper; 19. Feed inlet; 20. Rubber ring; 21. Baffle; 22. Arc-shaped connecting plate; 23. Drainage trough; 24. Second liquid storage box; 25. Air pump; 26. Transmission belt; 27. Conical partition; 28. Lower rotating plate; 29. ​​Fixing plate; 30. Gear ring; 31. Air inlet pipe; 32. First liquid storage box; 33. Annular filter screen; 34. Cylinder; 35. Gearbox. Detailed Implementation

[0042] Please see Figures 1 to 9 This invention provides a dipotassium phosphate compound fertilizer production system, the technical solution of which is as follows:

[0043] Please see Figure 1 , Figure 2 , Figure 8 The conveyor belt continuously transports compound fertilizer granules into the feed hopper 3. When the dehumidifying outer cylinder 15 rotates to the designated position, the upper rotating plate 14 opens the feed port 19, allowing the compound fertilizer granules in the feed hopper 3 to enter the discharge chamber formed between the dehumidifying outer cylinder 15 and the dehumidifying inner cylinder 16. After filling, the servo motor 2 drives the upper rotating plate 14 to rotate, causing the three dehumidifying outer cylinders 15 to rotate accordingly. After dehumidification, the dehumidifying outer cylinder 15 rotates to the discharge point, and after discharge, the dehumidifying outer cylinder 15 rotates to the feed point for feeding. By setting three dehumidifying outer cylinders 15, dehumidification can be carried out continuously.

[0044] Please see Figure 1 , Figure 2 After the dehumidifying outer cylinder 15 rotates to the designated position, the movable end of the electric telescopic rod 5 pushes the push column 6 downward. The downward-moving push column 6 drives the circular plate 9 and the pressure plate 8 downward through the connecting rod 7. The downward-moving pressure plate 8 flattens the compound fertilizer granules in the discharge chamber, preventing the dehumidifying outer cylinder 15 from shaking during rotation and affecting the stability of the equipment. The downward pressure of the pressure plate 8 can prevent the compound fertilizer granules from shaking, reduce the wear between fertilizer granules, and avoid the increase of dust generated in the later stage of the compound fertilizer production system, which may affect the health of production personnel.

[0045] Please see Figure 1 , Figure 2 , Figure 9Because magnets are installed on both the circular plate 9 and the pressure plate 8, a magnetic force is generated on them after they enter the dehumidification outer cylinder 15 and the dehumidification inner cylinder 16. This causes the iron ring inside the rubber ring 20 to enter the sealing groove due to the magnetic force, so that the rubber ring 20 abuts against the sealing groove, ensuring the sealing between the circular cylinder 34 and the dehumidification inner cylinder 16, improving the dehumidification efficiency, reducing the wear between fertilizer particles, and avoiding the increase of dust generated in the later stage of the compound fertilizer production system, which may affect the health of production personnel.

[0046] Please see Figure 3 , Figure 4 , Figure 6 When the dehumidifying outer cylinder 15 rotates to the designated position, the gear ring 30 installed on it meshes with the gear 12. The motor 13 runs, driving the gear 12 to rotate. The rotating gear 12 drives one of the dehumidifying outer cylinders 15 to rotate through the meshing gear ring 30. Because the dehumidifying outer cylinder 15 has multiple filter holes, the liquid in the discharge chamber will diffuse outward due to centrifugal force, drying the damp granular material. Since the dehumidifying outer cylinder 15 is equipped with a gear ring 30, and the gear ring 30 needs to be connected to the drive assembly, and the dehumidifying outer cylinder 15 will discharge liquid, it is necessary to isolate the gear ring 30 to prevent liquid from splashing onto the gear 12 and interfering with the normal operation of the equipment. This is achieved through a baffle. The 21 and the arc-shaped connecting plate 22 separate the dehumidifying outer cylinder 15 to prevent the liquid generated by the high-speed rotation of the dehumidifying outer cylinder 15 from interfering with the adjacent dehumidifying outer cylinder 15. Because the lower rotating plate 28 and the conical partition 27 are both provided with annular drainage grooves 23, the generated liquid can flow out through the drainage grooves 23, avoiding secondary pollution of the particles in the storage chamber. At the same time, the conical partition 27 can also better guide the splashed liquid into the drainage grooves 23. Because the arc-shaped groove and the drainage groove 23 overlap, the liquid can enter the second liquid storage box 24. The liquid is drained away through the first liquid storage box 32 and the second liquid storage box 24, avoiding the generated moisture from interfering with the normal dehumidification of the dehumidifying device.

[0047] Please see Figure 3 , Figure 4 , Figure 5 and Figure 7Meanwhile, the operation of the dehumidifying outer cylinder 15 requires the rotation of the output shaft of the motor 13, which in turn drives the air pump 25 through the transmission belt 26 installed on it. The air pump 25's air inlet pipe 31 is equipped with a filter cartridge to prevent moisture from entering and interfering with the dehumidification efficiency of the dehumidifying device. The air inlet pipe 31 can also be installed inside the dryer, where the heat generated by the dryer heats the compound fertilizer granules in the discharge chamber, allowing the dehumidified granules to heat up quickly upon entering the dryer, indirectly improving the drying efficiency of the drying equipment. The air pump 25 draws high-temperature external gas into the cylinder 34. Because when the dehumidifying outer cylinder 15 rotates to a designated position, the dehumidifying inner cylinder 16 will connect with the cylinder 34, allowing gas to enter through the cylinder 34. The gas enters the dehumidifying inner cylinder 16. Because the discharge chamber is located between the dehumidifying outer cylinder 15 and the dehumidifying inner cylinder 16, the gas can only be discharged by passing through the discharge chamber. The flow of the gas pushes the water near the dehumidifying inner cylinder 16 outward, so that the centrifugal force generated by the rotation of the dehumidifying outer cylinder 15 can drain most of the water in the discharge chamber. At the same time, because the gas enters from the end with the larger aperture and blows out from the end with the smaller aperture, the flow rate of the discharged gas will increase. By increasing the flow rate, the dehumidification effect of the dehumidifying outer cylinder 15 is indirectly improved. By reducing the humidity of the particles, the drying efficiency of the dryer is improved, the wear between fertilizer particles is reduced, and the increased dust generated in the later stage of the compound fertilizer production system is avoided, which may affect the health of the production personnel.

[0048] Please see Figure 2 , Figure 5 After dehumidification is complete, the movable end of the electric telescopic rod 5 pushes the push column 6 upward. The upward push column 6 drives the circular plate 9 and the pressure plate 8 back to their original positions through the connecting rod 7. When the circular plate 9 and the pressure plate 8 leave the dehumidification outer cylinder 15 and the dehumidification inner cylinder 16, the iron ring will return to its original position, causing the rubber ring 20 and the iron ring to exit the sealing groove. At this time, the servo motor 2 can normally drive the upper rotating plate 14 to rotate, rotating the dehumidified outer cylinder 15 above the feed inlet 19 for feeding. At the same time, the dehumidification outer cylinder 15, which has just finished feeding, can be loaded again.

[0049] During operation, compound fertilizer granules in the feed hopper 3 continuously enter the discharge chamber formed between the dehumidifying outer cylinder 15 and the dehumidifying inner cylinder 16 through the feed inlet 19. Since the three dehumidifying outer cylinders 15 are connected by a reduction gear set, the rotation of one cylinder drives the other two to rotate. This rotation ensures even feeding into the discharge chamber, guaranteeing uniform distribution of the granules. After filling, the servo motor 2 drives the upper rotating plate 14 to rotate. The rotating upper rotating plate 14 then drives the multiple dehumidifying outer cylinders 15 to rotate, moving them to their corresponding positions. Because there are three... The outer dehumidifier cylinder 15 rotates 120° each time, so the servo motor 2 rotates 120° each time. When the outer dehumidifier cylinder 15 rotates to the designated position, the movable end of the electric telescopic rod 5 pushes the push column 6 downward. The downward-moving push column 6 drives the circular plate 9 and the pressure plate 8 downward through the connecting rod 7. The downward-moving pressure plate 8 flattens the compound fertilizer granules in the discharge chamber to prevent the outer dehumidifier cylinder 15 from shaking during rotation and affecting the stability of the equipment. Since magnets are installed on both the circular plate 9 and the pressure plate 8, a magnetic force is generated on them after they enter the outer dehumidifier cylinder 15 and the inner dehumidifier cylinder 16. This causes the iron ring inside the rubber ring 20 to be affected by the magnetic force. The rubber ring 20 enters the sealing groove, ensuring a seal between the cylinder 34 and the inner dehumidifying cylinder 16. The gear ring 30 installed on it meshes with the gear 12, causing the motor 13 to rotate and drive the gear 12 to rotate. The rotating gear 12, through the meshing gear ring 30, drives one of the outer dehumidifying cylinders 15 to rotate. Dehumidification is achieved through the centrifugal force generated by the rotation. Simultaneously, as the outer dehumidifying cylinder 15 rotates for dehumidification, the output shaft of the motor 13 rotates, driving the air pump 25 via the transmission belt 26 installed on it. The air pump 25 draws external air into the cylinder 34. Because the outer dehumidifying cylinder 15 rotates... When the dehumidifying inner cylinder 16 reaches the designated position, it will connect with the cylinder 34, allowing gas to enter the dehumidifying inner cylinder 16 through the cylinder 34. Because the discharge chamber is located between the dehumidifying outer cylinder 15 and the dehumidifying inner cylinder 16, the gas can only be discharged by passing through the discharge chamber. The flow of the gas pushes the moisture near the dehumidifying inner cylinder 16 outward. Because the gas enters from the end with the larger aperture and blows out from the end with the smaller aperture, the flow rate of the discharged gas will increase. By increasing the flow rate, the dehumidification effect of the dehumidifying outer cylinder 15 is indirectly improved. By reducing the humidity of the particles, the drying efficiency of the dryer is improved, and the wear between fertilizer particles is reduced.

[0050] The specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. A potassium diphosphate compound fertilizer production system, comprising a crusher, a mixer, a granulator, a dehumidifier, a dryer, a cooler, a coating machine, and packaging equipment, characterized in that, The dehumidification device includes a housing (1), an upper rotating plate (14) rotatably connected to the top of the housing (1), an outer dehumidification cylinder (15) rotatably connected to the upper rotating plate (14), an inner dehumidification cylinder (16) provided inside the outer dehumidification cylinder (15), a discharge chamber formed between the outer dehumidification cylinder (15) and the inner dehumidification cylinder (16), and filter holes are provided on both the outer dehumidification cylinder (15) and the inner dehumidification cylinder (16). A servo motor (2) is installed on the housing (1). The output shaft of the servo motor (2) is fixedly installed on the upper rotating plate (14). A drive assembly is installed on one side of the housing (1), and a jet assembly connected to the drive assembly is installed on the housing (1). A gear ring (30) is fixedly installed at the bottom of the dehumidifying outer cylinder (15). When the servo motor (2) drives the upper rotating plate (14) to rotate to a specified angle, the gear ring (30) is connected to the drive assembly, and the drive assembly drives the jet assembly to spray the gas outside the housing (1) into the wet inner cylinder (16).

2. The potassium diphosphate compound fertilizer production system according to claim 1, characterized in that: The dehumidifying outer cylinder (15) has three sections and a lower rotating plate (28) is installed at the bottom. The lower rotating plate (28) has multiple holes for the dehumidifying outer cylinder (15) to rotate. A conical baffle (27) is installed on the lower rotating plate (28). The conical baffle (27) is fitted onto the multiple dehumidifying outer cylinders (15). The conical baffle (27) is located below the filter holes of the dehumidifying outer cylinder (15) and above the gear ring (30). Both the lower rotating plate (28) and the conical baffle (27) have annularly arranged drainage grooves (23). The drain trough (23) is located on one side of the dehumidifying outer cylinder (15), and the drain trough (23) on the rotating plate is larger than the drain trough (23) on the conical partition (27). A plurality of baffles (21) arranged in a ring are installed between the rotating plate and the conical partition (27), and an arc-shaped connecting plate (22) is fixedly installed between two adjacent baffles (21). The arc-shaped connecting plate (22) slides in the housing (1). A fixing plate (29) is fixedly installed in the housing (1), and the fixing plate (29) is rotatably connected to the lower rotating plate (28).

3. The potassium diphosphate compound fertilizer production system according to claim 2, characterized in that: The drive assembly includes a motor (13), a gear (12), and a gearbox (35). The motor (13) is fixedly mounted on the fixed plate (29). The output shaft of the motor (13) is fixedly mounted with the gear (12). When the dehumidifying outer cylinder (15) rotates to a designated position, the gear (12) meshes with the gear ring. The gearbox (35) is installed between the lower rotating plate (28) and the conical partition (27). A reduction gear set is installed inside the gearbox (35). The reduction gear set meshes with multiple gear rings.

4. The potassium diphosphate compound fertilizer production system according to claim 3, characterized in that: The jet assembly includes an air pump (25), a transmission belt (26), a cylinder (34), and an air inlet pipe (31). The air pump (25) is fixedly installed on the fixed plate (29). The transmission belt (26) is installed between the input shaft of the air pump (25) and the output shaft of the motor (13). A circular hole is opened on the fixed plate (29). A cylinder (34) is fixedly installed on the circular hole. An air inlet pipe (31) is installed between the cylinder (34) and the air pump (25). The filter hole on the dehumidifying inner cylinder (16) is funnel-shaped, and the end with the smaller diameter hole faces the discharge chamber.

5. The potassium diphosphate compound fertilizer production system according to claim 1, characterized in that: A plurality of evenly arranged isolation plates (17) are fixedly installed between the dehumidifying outer cylinder (15) and the dehumidifying inner cylinder (16), and the length of the isolation plates (17) is consistent with the height of the dehumidifying outer cylinder (15) and the dehumidifying inner cylinder (16).

6. The potassium diphosphate compound fertilizer production system according to claim 5, characterized in that: A support frame (4) is fixedly installed on the housing (1). An electric telescopic rod (5) is installed on the support frame (4). A push column (6) is rotatably connected to the movable end of the electric telescopic rod (5). A circular plate (9) is fixedly installed on the push column (6). A ring-shaped connecting rod (7) is fixedly installed on the push column (6). A pressure plate (8) is fixedly installed at the end of the connecting rod (7) away from the push column (6). The pressure plate (8) and the circular plate (9) are located on the same horizontal plane. When the push column (6) descends, the circular plate (9) slides inside the dehumidifying inner cylinder (16), and the pressure plate (8) slides inside the discharge chamber.

7. A potassium diphosphate compound fertilizer production system according to claim 2, characterized in that: The fixed plate (29) has an annular filter screen (33) on the side near the motor (13). The bottom end of the fixed plate (29) is fixedly installed with a first liquid storage box (32) covering the annular filter screen (33). The fixed plate (29) has two symmetrically arranged arc-shaped grooves on the side near the motor (13). When the rotating block rotates to a set position, the arc-shaped grooves coincide with the drain groove (23). The bottom of the fixed plate (29) is fixedly installed with a second liquid storage box (24) covering the arc-shaped grooves. A connecting pipe connects the first liquid storage box (32) and the second liquid storage box (24).

8. A potassium diphosphate compound fertilizer production system according to claim 4, characterized in that: The housing (1) has a crescent-shaped feed inlet (19), a feed hopper (3) is fixedly installed on the feed inlet (19), and a conical discharge hopper (18) is installed at the bottom of the fixing plate (29). The conical discharge hopper (18) is installed on the side away from the feed hopper (3) and the cylinder (34).

9. A potassium diphosphate compound fertilizer production system according to claim 6, characterized in that: Magnets are installed on both the circular plate (9) and the pressure plate (8). An annular groove is provided on the fixing block. An annular rubber ring (20) is fixedly installed in the annular groove. An iron ring is fixedly installed in the rubber ring (20). A sealing groove that cooperates with the annular rubber ring (20) is provided at the bottom of the dehumidifying inner cylinder (16).

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