A fertilizer granule cooling device for fertilizer production

Abstract

The application relates to a fertilizer particle cooling device for fertilizer production, which comprises a conveyor for conveying the granular fertilizer, a feeding hopper for feeding on both ends of the conveyor, and a guide frame for discharging on both ends of the conveyor, a discharge port for discharging is formed in the feeding hopper, an adjusting unit is slidably arranged on the discharge port, a cooling bin is arranged on the conveyor, and a cooling unit is arranged on the cooling bin; two material distribution mechanisms are oppositely arranged in the cooling bin, the material distribution mechanism comprises a fixed plate arranged above the inner wall of the cooling bin, the size of the discharge port can be flexibly adjusted through the adjusting unit, so that the flow of the fertilizer particles falling from the feeding hopper to the conveyor is kept balanced, the fertilizer particles can be dispersed through the material distribution mechanism, gaps are formed among the fertilizer particles, the contact area of the fertilizer particles and the cooling gas is increased, and the cooling effect is improved.

Description

Technical Field

[0001] This application relates to the field of granular fertilizer cooling technology, and in particular to a fertilizer granule cooling device for fertilizer production. Background Technology

[0002] In the fertilizer production industry, after drying and screening, fertilizer granules need to be cooled, which is crucial for subsequent coating and packaging processes. Currently, cooling conveyors are used in the fertilizer granule cooling process. These devices use conveyor belts to slowly transport the fertilizer granules and cool them during the transport process, thereby improving production efficiency.

[0003] However, when using a cooling conveyor to cool fertilizer granules, the distribution of fertilizer granules above the conveyor belt is not uniform, and a large number of fertilizer granules will accumulate together. This accumulation phenomenon results in close contact between fertilizer granules, forming a relatively dense structure. The fertilizer granules in the inner layer are wrapped by the outer layer granules, reducing the contact area with the external cooling medium such as air.

[0004] Specifically, the cooling effect of fertilizer granules mainly depends on the heat exchange between the fertilizer granules and the cooling medium. When fertilizer granules are piled up, the inner layer of fertilizer granules cannot fully contact the cooling medium, resulting in a slow cooling speed and poor cooling effect. Although the outer layer of fertilizer granules can exchange heat with the cooling medium more quickly, the insufficient cooling of the inner layer of granules leads to uneven cooling of the fertilizer granules as a whole, thereby reducing production efficiency and having a certain impact on fertilizer quality.

[0005] To address the aforementioned issues, a fertilizer granule cooling device for fertilizer production is now designed. Utility Model Content

[0006] This application provides a fertilizer granule cooling device for fertilizer production to solve the problem in related technologies where, when using a cooling conveyor to cool fertilizer granules, the distribution of fertilizer granules above the conveyor belt is not uniform, and the inner layer of fertilizer granules is wrapped by the outer layer of granules, resulting in a reduced contact area with the external cooling medium, such as air.

[0007] In a first aspect, a fertilizer granule cooling device for fertilizer production is provided, comprising:

[0008] A conveyor for conveying granular fertilizer is provided at both ends of the conveyor, which is equipped with a feeding hopper for feeding and a guide frame for discharging. The feeding hopper is provided with a discharge port for discharging, and an adjustment unit is slidably provided on the discharge port for adjusting the size of the discharge port.

[0009] The conveyor is equipped with a cooling chamber, and the cooling chamber is equipped with a cooling unit, which is used to cool the conveyed fertilizer.

[0010] The cooling chamber has two material distribution mechanisms arranged opposite each other. Each material distribution mechanism includes a fixed plate set above the inner wall of the cooling chamber. The bottom of the fixed plate is provided with multiple material distribution strips, which are distributed along the length of the fixed plate and are used to disperse fertilizer particles on the conveyor to form gaps.

[0011] In some embodiments, the conveyor includes multiple frames arranged in a straight line, with two side plates movably disposed between the tops of the multiple frames, and two drive rollers rotatably disposed between the two side plates. The two drive rollers are driven by a conveyor belt, the two ends of which are in contact with the side walls of the side plates. A drive motor and a reducer are disposed at the bottom of one side of the frame, the output shaft of the drive motor is connected to the input shaft of the reducer, and a gear is disposed at one end of the output shaft of the reducer and one end of the drive roller. The two gears are driven by a rack and pinion.

[0012] Multiple auxiliary rollers are arranged vertically between the two side plates. The upper auxiliary rollers contact the upper part of the inner wall of the conveyor belt, and the lower auxiliary rollers contact the bottom of the conveyor belt.

[0013] In some embodiments, the end of the guide frame away from the conveyor is inclined downward, the guide frame has a U-shaped channel for guiding fertilizer granules to slide downward, a guide plate is provided at one end of the U-shaped channel near the conveyor belt, and the other end of the guide plate is in contact with the conveyor belt.

[0014] In some embodiments, the feeding hopper is located at the top of one end of the conveyor, the inside of the feeding hopper has a cavity for containing fertilizer granules, the top of the feeding hopper is open, the discharge port is located on the side of the feeding hopper close to the conveyor, and the bottom of the feeding hopper has a slope for guiding the granular fertilizer in the cavity to the discharge port.

[0015] The inclined surface of the feeding hopper is provided with a support column.

[0016] In some embodiments, the adjusting unit includes a baffle inserted into the discharge port. Both the discharge port and the baffle are rectangular, and the lengths of the baffle, the discharge port, and the conveyor belt are the same. An installation strip is provided on the baffle, and two electric push rods are arranged opposite each other at the bottom of the installation strip. The electric push rods are used to drive the baffle and the installation strip to rise and fall. The bottom of the electric push rods is connected to the side wall of the feeding hopper through a fixing block.

[0017] In some embodiments, the cooling chamber includes a side baffle disposed above the side plate, the side baffle having a plurality of exhaust holes, and a cover plate disposed between the top ends of two side baffles;

[0018] The fixing plate is located at the bottom of the cover plate.

[0019] In some embodiments, the cooling unit includes a plurality of blowers embedded in a cover plate, a cylinder is provided at the air inlet of the blower, a filter screen is provided inside the cylinder, an air inlet pipe is connected to the top of the cylinder, a main pipe is connected between the tops of the plurality of air inlet pipes, and the main pipe is connected to an external air supply pipe.

[0020] This application provides a fertilizer granule cooling device for fertilizer production. The size of the discharge port can be flexibly adjusted by the adjustment unit, thereby controlling the flow rate of fertilizer granules falling from the feeding hopper onto the conveyor to maintain a balanced flow, so that the fertilizer granules fall evenly onto the conveyor and are spread out, ensuring the uniformity and controllability of fertilizer granule conveying.

[0021] The material distribution mechanism disperses the fertilizer granules on the conveyor, creating gaps between them. This increases the contact area between the fertilizer granules and the cooling gas, allowing for more thorough heat exchange between the cooling gas and the fertilizer granules, thus improving the cooling effect and ensuring uniform cooling of the fertilizer granules. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A three-dimensional structural illustration provided for an embodiment of this application. Figure 1 ;

[0024] Figure 2 A front sectional view provided for an embodiment of this application;

[0025] Figure 3 A three-dimensional structural illustration provided for an embodiment of this application. Figure 2 ;

[0026] Figure 4 A three-dimensional structural illustration provided for an embodiment of this application. Figure 3 ;

[0027] Figure 5 A three-dimensional structural schematic diagram of the connection structure between the cooling chamber and the material distribution mechanism, provided for embodiments of this application;

[0028] Figure 6 This is a three-dimensional structural diagram of the connection structure between the adjustment unit and the feeding hopper provided in the embodiments of this application.

[0029] In the diagram: 1. Conveyor; 2. Feed hopper; 3. Guide frame; 4. Adjustment unit; 5. Cooling chamber; 6. Cooling unit; 7. Material distribution mechanism; 11. Frame; 12. Side plate; 13. Drive roller; 14. Conveyor belt; 15. Gear; 16. Auxiliary roller; 21. Discharge port; 31. U-shaped channel; 32. Guide plate; 41. Baffle; 42. Mounting strip; 43. Electric push rod; 51. Side baffle; 52. Cover plate; 61. Blower; 62. Cylinder; 63. Filter screen; 64. Air inlet pipe; 65. Main pipe; 71. Fixing plate; 72. Material distribution strip. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] This application provides a fertilizer granule cooling device for fertilizer production, which can solve the problem in related technologies where, when using a cooling conveyor to cool fertilizer granules, the distribution of fertilizer granules above the conveyor belt is not uniform, and the fertilizer granules in the inner layer are wrapped by the outer layer granules, reducing the contact area with the external cooling medium such as air.

[0032] Please see Figures 1-3 A fertilizer granule cooling device for fertilizer production includes: a conveyor 1 for conveying granular fertilizer, with a feeding hopper 2 for feeding and a guide frame 3 for discharging at both ends of the conveyor 1; a discharge port 21 for discharging the fertilizer, with an adjusting unit 4 slidably disposed on the discharge port 21 for adjusting the size of the discharge port 21; a cooling chamber 5 on the conveyor 1, with a cooling unit 6 on the cooling chamber 5 for cooling the conveyed fertilizer; and two material distribution mechanisms 7 arranged opposite each other inside the cooling chamber 5. Each material distribution mechanism 7 includes a fixed plate 71 disposed above the inner wall of the cooling chamber 5, with multiple material distribution strips 72 disposed at the bottom of the fixed plate 71. The multiple material distribution strips 72 are distributed along the length of the fixed plate 71 and are used to disperse the fertilizer granules on the conveyor 1 to form gaps.

[0033] Fertilizer granules are fed into the feeding hopper 2, and the regulating unit 4 adjusts the size of the discharge port 21. The flow rate of fertilizer granules falling from the feeding hopper 2 onto the conveyor 1 is kept balanced. The fertilizer granules are evenly spread on the conveyor 1, and the conveyor 1 is started to transport the fertilizer.

[0034] Fertilizer granules enter the cooling chamber 5 along with the conveyor belt 14. The cooling unit 6 cools the fertilizer granules on the conveyor belt 14. At the same time, as the fertilizer granules move on the conveyor belt 14, the dividing bar 72 disperses the fertilizer granules, creating gaps between them, increasing the contact area between the fertilizer granules and the cooling gas, and improving the cooling effect.

[0035] After cooling and dispersion, the fertilizer granules are conveyed to the guide frame 3 by the conveyor belt 14, and the fertilizer granules flow out through the guide frame 3, completing the feeding process.

[0036] The size of the discharge port 21 can be flexibly adjusted by the adjustment unit 4, thereby controlling the flow rate of fertilizer particles falling from the feeding hopper 2 onto the conveyor 1 to maintain a balanced flow, so that the fertilizer particles fall evenly onto the conveyor 1 and are spread out, ensuring the uniformity and controllability of the fertilizer particle conveying.

[0037] The material distribution mechanism 7 disperses the fertilizer particles on the conveyor 1, creating gaps between the fertilizer particles and increasing the contact area between the fertilizer particles and the cooling gas. This allows the cooling gas to exchange heat more fully with the fertilizer particles, improving the cooling effect and ensuring that the fertilizer particles are cooled evenly.

[0038] like Figure 3 and Figure 4 As shown, in one embodiment, the conveyor 1 includes a plurality of frames 11 arranged in a straight line. Two side plates 12 are movably disposed between the tops of the plurality of frames 11. Two drive rollers 13 are rotatably disposed between the two side plates 12. The two drive rollers 13 are driven by a conveyor belt 14. The two ends of the conveyor belt 14 are in contact with the side walls of the side plates 12. A drive motor and a reducer are disposed at the bottom of one side of the frame 11. The output shaft of the drive motor is connected to the input shaft of the reducer. A gear 15 is disposed at one end of the output shaft of the reducer and one end of the drive roller 13. The two gears 15 are driven by a rack and pinion. A plurality of auxiliary rollers 16 are disposed between the two side plates 12, with the upper auxiliary rollers 16 contacting the upper inner wall of the conveyor belt 14 and the lower auxiliary rollers 16 contacting the bottom of the conveyor belt 14.

[0039] When the drive motor starts, its output shaft transmits power to the input shaft of the reducer. After the reducer reduces speed and increases torque, the output shaft of the reducer starts to rotate. The rotation of the output shaft of the reducer will drive the gear 15 connected to it to rotate, which in turn drives the gear 15 at one end of the drive roller 13 to rotate through the rack, ultimately causing the drive roller 13 to rotate.

[0040] When the drive roller 13 rotates, the conveyor belt 14 moves accordingly. The two ends of the conveyor belt 14 are in contact with the side wall of the side plate 12, which ensures the stability of the conveyor belt 14 during operation and prevents fertilizer particles from falling out of the gap between the conveyor belt 14 and the side plate 12.

[0041] The upper auxiliary roller 16 provides support for the upper surface of the conveyor belt 14, preventing it from sagging and deforming due to gravity when carrying fertilizer granules, thus ensuring the fertilizer granules are transported smoothly on the conveyor belt 14. The lower auxiliary roller 16 contacts the bottom of the conveyor belt 14, providing support for its lower surface, keeping the conveyor belt 14 taut during operation, reducing swaying and deviation, and improving the stability and reliability of the conveying process.

[0042] like Figure 1 and Figure 2 As shown, in this embodiment, the end of the guide frame 3 away from the conveyor 1 is inclined downward. The guide frame 3 has a U-shaped channel 31 for guiding fertilizer particles to slide downward. A guide plate 32 is provided at one end of the U-shaped channel 31 near the conveyor belt 14. The other end of the guide plate 32 is in contact with the conveyor belt 14.

[0043] When fertilizer granules are conveyed to the guide frame 3 by the conveyor belt 14 of the conveyor 1, the fertilizer granules on the conveyor belt 14 will smoothly transition from the conveyor belt 14 to the U-shaped channel 31 of the guide frame 3 because the guide plate 32 is in contact with the conveyor belt 14. The guide plate 32 plays the role of connecting the conveyor belt 14 and the guide frame 3, and avoids the fertilizer granules from spilling or accumulating at the junction of the two.

[0044] The end of the guide frame 3 away from the conveyor 1 is inclined downward. After the fertilizer particles enter the U-shaped channel 31, they will slide downward along the inclined U-shaped channel 31 under their own gravity. The U-shaped channel 31 can restrict the sliding direction of the fertilizer particles, prevent them from falling to both sides, and ensure that the fertilizer particles can slide down in a concentrated and orderly manner.

[0045] like Figure 4 and Figure 6 As shown, in one embodiment, the feeding hopper 2 is located at the top of one end of the conveyor 1. The inside of the feeding hopper 2 has a cavity for containing fertilizer granules. The top of the feeding hopper 2 is open. The discharge port 21 is located on the side of the feeding hopper 2 near the conveyor 1. The bottom of the feeding hopper 2 has an inclined surface for guiding the granular fertilizer in the cavity to the discharge port 21. A support column is provided on the inclined surface of the feeding hopper 2.

[0046] The feeding hopper 2 is located at the top of one end of the conveyor 1. Its internal cavity is used to hold the fertilizer granules to be cooled. The top opening of the feeding hopper 2 facilitates the entry of fertilizer granules into the feeding hopper 2.

[0047] The inclined surface at the bottom of the feeding hopper 2 utilizes the principle of gravity, allowing fertilizer particles to slide automatically along the inclined surface towards the discharge port 21 on the side closer to the conveyor 1, thus achieving automatic guidance of the fertilizer.

[0048] The support pillars installed on the inclined surface of the feeding hopper 2 provide additional support for the feeding hopper 2 and enhance the stability of the feeding hopper 2 structure.

[0049] like Figure 4 and Figure 6 As shown, in one embodiment, the adjusting unit 4 includes a baffle 41 inserted into the discharge port 21. Both the discharge port 21 and the baffle 41 are rectangular, and the lengths of the baffle 41, the discharge port 21, and the conveyor belt 14 are the same. An mounting strip 42 is provided on the baffle 41, and two electric push rods 43 are arranged opposite each other at the bottom of the mounting strip 42. The electric push rods 43 are used to drive the baffle 41 and the mounting strip 42 to rise and fall. The bottom of the electric push rods 43 is connected to the side wall of the feeding hopper 2 through a fixing block.

[0050] The baffle 41 is inserted into the discharge port 21. At this time, the discharge port 21 is in a certain initial opening state. Under the action of gravity, the fertilizer particles slide from the inclined surface at the bottom of the feeding hopper 2 to the discharge port 21 and fall onto the conveyor belt 14 through this opening.

[0051] The bottom of the electric push rod 43 is connected to the side wall of the feeding hopper 2 through a fixing block, providing it with stable support.

[0052] When the size of the discharge port 21 needs to be adjusted to control the flow rate of fertilizer granules, the electric push rod 43 starts working. The telescopic rod of the electric push rod 43 extends and retracts, thereby driving the mounting strip 42 to rise and fall. Since the baffle 41 is connected to the mounting strip 42, the baffle 41 will rise and fall together with the mounting strip 42. When the baffle 41 rises, the opening of the discharge port 21 increases, and more fertilizer granules can fall; when the baffle 41 falls, the opening of the discharge port 21 decreases, and the number of fertilizer granules falling decreases.

[0053] like Figure 1 and Figure 2 As shown, in one embodiment, the cooling chamber 5 includes a side baffle 51 disposed above the side plate 12, the side baffle 51 having a plurality of exhaust holes, and a cover plate 52 disposed between the top ends of two side baffles 51.

[0054] The fixing plate 71 is disposed at the bottom of the cover plate 52. One fixing plate 71 is disposed at the middle of the bottom of the cover plate 52, and the other fixing plate 71 is disposed at the bottom of the cover plate 52 near the feeding hopper 2.

[0055] Side baffles 51 are positioned above the side plate 12 of the conveyor 1. The tops of the two side baffles 51 are connected by a cover plate 52, thereby forming a relatively enclosed cooling chamber 5 space that encloses the fertilizer granules transported on the conveyor belt 14, providing an independent environment for the cooling process.

[0056] Cooling unit 6 blows cooling gas into cooling chamber 5. The cooling gas exchanges heat with the fertilizer particles, and its temperature rises after absorbing the heat from the fertilizer particles. The hot gas is discharged from cooling chamber 5 through exhaust port, so that a certain air flow and temperature gradient are maintained in cooling chamber 5, which is conducive to continuous cooling of fertilizer particles.

[0057] One of them is in the middle of the bottom of the cover plate 52, and the other is at one end near the feeding hopper 2. When the fertilizer particles enter the cooling chamber 5 with the conveyor belt 14, the material distribution bar 72 on the fixed plate 71 near the feeding hopper 2 first disperses the fertilizer particles that have just entered the cooling chamber 5, so that a certain gap is formed between the fertilizer particles, increasing the contact area with the cooling gas.

[0058] As the conveyor belt 14 continues to transport the fertilizer particles, the distribution strips 72 on the fixed plate 71 located at the bottom center of the cover plate 52 disperse the fertilizer particles again, further enhancing the dispersion effect and ensuring that the fertilizer particles can fully contact the cooling gas throughout the cooling process, thereby improving the cooling efficiency.

[0059] like Figure 1 , Figure 2 and Figure 3 As shown, in one embodiment, the cooling unit 6 includes a plurality of blowers 61 embedded in a cover plate 52. A cylinder 62 is provided at the air inlet of each blower 61, and a filter screen 63 is provided inside the cylinder 62. An air inlet pipe 64 is connected to the top of the cylinder 62, and a main pipe 65 is connected between the tops of the plurality of air inlet pipes 64. The main pipe 65 is connected to an external air supply pipe. The main pipe 65 extends outside the production workshop to exchange with external gas or to connect with a refrigeration unit to supply cold air.

[0060] External gas enters through the main pipe 65 and is distributed to each cylinder 62 through the air inlet pipe 64. The filter screen 63 installed inside the cylinder 62 filters the incoming gas, blocking dust, impurities and other particulate matter in the air, preventing these impurities from entering the blower 61 and causing wear or damage to the blower 61. It also prevents impurities from entering the cooling chamber 5 and contaminating the fertilizer particles.

[0061] After filtration, the gas enters the blower 61, which accelerates the gas and blows it into the cooling chamber 5. The cooling gas exchanges heat with the fertilizer particles in the cooling chamber 5, absorbing the heat from the fertilizer particles and lowering their temperature to achieve the purpose of cooling.

[0062] The main pipe 65 extends outside the production workshop. On the one hand, it can exchange with the external gas to ensure a continuous supply of fresh air to the cooling unit 6, providing sufficient cooling medium for the cooling process. On the other hand, the main pipe 65 can also be connected to the refrigeration mechanism, which delivers cold air to the main pipe 65, and then into the cooling chamber 5 through each air inlet pipe 64 and the blower 61, further improving the cooling effect and meeting the production scenarios with high requirements for the cooling temperature of fertilizer granules.

[0063] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0064] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0065] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A fertilizer granule cooling device for fertilizer production, characterized in that, include: A conveyor (1) is used to transport granular fertilizer. At both ends of the conveyor (1) are a feeding hopper (2) for feeding and a guide frame (3) for discharging. The feeding hopper (2) is provided with a discharge port (21) for discharging. An adjustment unit (4) is slidably provided on the discharge port (21). The adjustment unit (4) is used to adjust the size of the discharge port (21). The conveyor (1) is provided with a cooling chamber (5), and the cooling chamber (5) is provided with a cooling unit (6), which is used to cool the conveyed fertilizer granules; The cooling chamber (5) has two material distribution mechanisms (7) arranged opposite each other. The material distribution mechanism (7) includes a fixed plate (71) arranged above the inner wall of the cooling chamber (5). The bottom of the fixed plate (71) is provided with multiple material distribution strips (72). The multiple material distribution strips (72) are distributed along the length of the fixed plate (71) and are used to disperse the fertilizer particles on the conveyor (1) to form gaps.

2. The fertilizer granule cooling equipment for fertilizer production as described in claim 1, characterized in that: The conveyor (1) includes multiple frames (11) arranged in a straight line. Two side plates (12) are movably arranged between the tops of the multiple frames (11). Two drive rollers (13) are rotatably arranged between the two side plates (12). The two drive rollers (13) are driven by a conveyor belt (14). The two ends of the conveyor belt (14) are attached to the side walls of the side plates (12). A drive motor and a reducer are provided at the bottom of one side of the frame (11). The output shaft of the drive motor is connected to the input shaft of the reducer. A gear (15) is provided at one end of the output shaft of the reducer and one end of the drive roller (13). The two gears (15) are driven by a rack and pinion. A plurality of auxiliary rollers (16) are arranged between the two side plates (12), with the upper auxiliary roller (16) contacting the upper part of the inner wall of the conveyor belt (14) and the lower auxiliary roller (16) contacting the bottom of the conveyor belt (14).

3. The fertilizer granule cooling equipment for fertilizer production as described in claim 1, characterized in that: The guide frame (3) is inclined downward at one end away from the conveyor (1). The guide frame (3) has a U-shaped channel (31) for guiding fertilizer particles to slide downward. A guide plate (32) is provided at one end of the U-shaped channel (31) near the conveyor belt (14). The other end of the guide plate (32) is in contact with the conveyor belt (14).

4. The fertilizer granule cooling equipment for fertilizer production as described in claim 1, characterized in that: The feeding hopper (2) is located at the top of one end of the conveyor (1). The inside of the feeding hopper (2) has a cavity for containing fertilizer granules. The top of the feeding hopper (2) is open. The discharge port (21) is located on the side of the feeding hopper (2) close to the conveyor (1). The bottom of the feeding hopper (2) has a slope for guiding the granular fertilizer in the cavity to the discharge port (21). The inclined surface of the feeding hopper (2) is provided with a support column.

5. The fertilizer granule cooling equipment for fertilizer production as described in claim 1, characterized in that: The adjustment unit (4) includes a baffle (41) inserted into the discharge port (21). The discharge port (21) and the baffle (41) are both rectangular, and the length of the baffle (41), the length of the discharge port (21), and the length of the conveyor belt (14) are all the same. An installation strip (42) is provided on the baffle (41). Two electric push rods (43) are provided opposite to each other at the bottom of the installation strip (42). The electric push rods (43) are used to drive the baffle (41) and the installation strip (42) to rise and fall. The bottom of the electric push rods (43) is connected to the side wall of the feeding hopper (2) through a fixing block.

6. The fertilizer granule cooling equipment for fertilizer production as described in claim 2, characterized in that: The cooling chamber (5) includes a side baffle (51) disposed above the side plate (12), and the side baffle (51) is provided with a plurality of exhaust holes, and a cover plate (52) is provided between the top ends of the two side baffles (51). The fixing plate (71) is located at the bottom of the cover plate (52).

7. The fertilizer granule cooling equipment for fertilizer production as described in claim 6, characterized in that: The cooling unit (6) includes multiple blowers (61) embedded in the cover plate (52). A cylinder (62) is provided at the air inlet of the blower (61). A filter screen (63) is provided inside the cylinder (62). An air inlet pipe (64) is connected to the top of the cylinder (62). A main pipe (65) is connected between the tops of the multiple air inlet pipes (64). The main pipe (65) is connected to an external air supply pipe.

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