Granular fertilizer cooling device

Abstract

The utility model discloses a granular fertilizer cooling device which comprises an air inlet mechanism, a roller mechanism and a feeding mechanism, and the air inlet mechanism and the feeding mechanism are both connected with the roller mechanism. The roller mechanism comprises a cooling barrel, a first supporting assembly, a second supporting assembly and a power rotating assembly, the cooling barrel is supported on the ground through the first supporting assembly and the second supporting assembly and is obliquely arranged, and the higher end of the cooling barrel is connected with the feeding mechanism; the end head of the lower end of the cooling cylinder body is connected with the air inlet mechanism; the periphery of the middle of the cooling cylinder is connected with the power rotating assembly, constant-speed rolling of the cooling cylinder is achieved through the power rotating assembly, a baffle assembly is arranged on the inner wall of the cooling cylinder, and materials are scattered through the baffle assembly to improve the cooling rate. According to the utility model, the cooling requirement of a continuous fertilizer production line can be completely met, and convenience is brought to the production operation of the fertilizer.

Description

Technical Field

[0001] The utility model relates to the field of fertilizer production, in particular to a granular fertilizer cooling device. Background Art

[0002] In the production process of compound fertilizers, in order to reduce the water content in the fertilizer particles, increase the particle strength and facilitate long-term storage, the wet material after granulation needs to be dried at high temperature. Since the temperature of the fertilizer after drying is too high, direct packaging will cause the fertilizer to melt, resulting in sticking into blocks, which is inconvenient to use and store. Therefore, the dried fertilizer will be cooled; Patent No. CN201922423589.7 discloses a cooling machine for the production of organic fertilizer particles, which places the fertilizer particles in a stirring container for stirring operation and uses a cooling fan to blow air to cool them. Although it can achieve the cooling effect of the fertilizer particles, it is necessary to pour out the material in the stirring container after cooling before the next batch of materials can be cooled. It cannot meet the cooling requirements of the continuous fertilizer production line, and it is necessary to improve it. Summary of the invention

[0003] The utility model aims to solve the above problems and provide a granular fertilizer cooling device which has a simple structure and is convenient to use.

[0004] In order to achieve the above purpose, the technical solution of the utility model is:

[0005] A granular fertilizer cooling device comprises an air inlet mechanism, a roller mechanism and a feeding mechanism, wherein the air inlet mechanism and the feeding mechanism are both connected to the roller mechanism; the roller mechanism comprises a cooling cylinder, a first supporting assembly, a second supporting assembly and a power rotating assembly, the cooling cylinder is supported on the ground by the first supporting assembly and the second supporting assembly and the cooling cylinder is arranged in an inclined state, the higher end of the cooling cylinder is connected to the feeding mechanism, and the lower end of the cooling cylinder is connected to the air inlet mechanism; the outer periphery of the middle part of the cooling cylinder is connected to the power rotating assembly and the uniform rolling of the cooling cylinder is achieved through the power rotating assembly, a baffle assembly is arranged on the inner wall of the cooling cylinder and the material is dispersed through the baffle assembly to increase the cooling rate.

[0006] Furthermore, the baffle assembly includes several rows of lifting plate combinations, which are arranged in sequence along the axial direction of the cooling cylinder; each row of lifting plate combinations is composed of several V-shaped lifting plates and several L-shaped lifting plates arranged alternately along the circumferential direction of the cooling cylinder; the V-shaped lifting plates and L-shaped lifting plates in adjacent rows of lifting plate combinations are staggered.

[0007] Furthermore, the vertical cross-section of the V-shaped lifting plate is V-shaped, and the vertical cross-section of the L-shaped lifting plate is L-shaped. One end of the V-shaped lifting plate and the L-shaped lifting plate is fixedly connected to the cooling cylinder and the plane to which the end belongs is consistent with the radial direction of the cooling cylinder. The other end of the V-shaped lifting plate and the L-shaped lifting plate is inclined toward the rotation direction of the cooling cylinder.

[0008] Furthermore, a plurality of push baffles are arranged on the inner wall of one end of the cooling cylinder close to the feeding mechanism. The plurality of push baffles are arranged at equal intervals along the circumferential direction of the cooling cylinder. The push baffles are all arranged in a spiral shape and the bending direction of the push baffles is consistent with the rotation direction of the cooling cylinder.

[0009] Furthermore, the first supporting assembly includes a first fixed seat, a first roller seat, a first roller, and a first positioning ring; the first fixed seat is fixedly connected to the ground, and two first roller seats are fixedly connected to the top of the first fixed seat and are rotatably connected to the first roller through the first roller seat; the first positioning ring is fixedly sleeved on the outside of the cooling cylinder and the first positioning ring is arranged close to the feeding mechanism, the axial direction of the first positioning ring is consistent with the axial direction of the first roller, and both sides of the bottom end of the first positioning ring are respectively placed on the two first rollers and abut against the outer peripheral surface of the first roller under the action of gravity of the cooling cylinder.

[0010] Furthermore, the second supporting assembly includes a second fixed seat, a second roller seat, a second roller, a second positioning ring, a positioning seat, and a positioning wheel; the second fixed seat is fixedly connected to the ground and the top height of the second fixed seat is lower than the top height of the first fixed seat, two second roller seats are fixedly connected to the top of the second fixed seat and are rotatably connected to the second roller through the second roller seat; the second positioning ring is fixedly sleeved on the outside of the cooling cylinder and the second positioning ring is arranged close to the air inlet mechanism, the axial direction of the second positioning ring is consistent with the axial direction of the second roller, and the two sides of the bottom end of the second positioning ring are respectively placed on the two second rollers and abut against the outer peripheral surface of the second roller under the action of gravity of the cooling cylinder; positioning seats are provided on both axial sides of the second positioning ring, the positioning seat is fixedly connected to the top of the second fixed seat, and the positioning wheel is rotatably connected to the positioning seat, the axial direction of the positioning wheel is perpendicular to the ground, and the outer peripheral surfaces of the two positioning wheels are respectively abutted against the bottom end side walls on both sides of the axial direction of the second positioning ring.

[0011] Furthermore, the power rotating assembly includes a third fixed seat, a power motor, a reducer, a power gear, and a driven gear ring; the third fixed seat is fixedly connected to the ground, the power motor and the reducer are both fixedly connected to the third fixed seat, and the power motor is connected to the power gear through the reducer; the inner wall of the driven gear ring is fixedly sleeved on the outside of the cooling cylinder, and the teeth on the outer periphery of the driven gear ring are meshed with the power gear.

[0012] Furthermore, the first support assembly, the second support assembly, and the power rotating assembly all include a protective cover, which is sleeved on the outside of the first positioning ring or the second positioning ring or the driven gear ring, and the bottom end of the protective cover is fixedly connected to the first fixed seat or the second fixed seat or the third fixed seat.

[0013] Furthermore, the feeding mechanism includes a feeding shell, one end of the feeding shell is a sealing structure, the other end of the feeding shell is connected with one axial end of the cooling cylinder and the feeding shell and the cooling cylinder are rotatably connected, the top of the feeding shell is provided with an exhaust port connected with the inside of the feeding shell, the inside of the feeding shell is provided with a channel shell, the channel shell is arranged in an inclined shape, the top of the channel shell extends out of the outside of the feeding shell to form a feeding port, the bottom end of the channel shell is provided with a wind shield, the top end of the wind shield is connected with the top side pin shaft of the bottom end of the channel shell.

[0014] Furthermore, the air inlet mechanism includes a unloading shell and an air inlet shell, one end of the unloading shell is connected with one axial end of the cooling cylinder, a unloading port is provided at the bottom end of the unloading shell, the other end of the unloading shell is connected with one axial end of the air inlet shell, and an air inlet is provided at the other axial end of the air inlet shell and is connected with an external air duct through the air inlet; several layers of filter screens are provided in the air inlet shell, and the outer edges of the filter screens are fixedly connected to the inner wall of the air inlet shell; several layers of filter screens are arranged at equal intervals along the axial direction of the air inlet shell and the grid density of the filter screens gradually increases along the flow direction of the airflow in the air inlet shell.

[0015] Compared with the prior art, the utility model has the following advantages and positive effects:

[0016] When the utility model performs a feed particle cooling operation, the fertilizer particles on the production line are allowed to enter the cooling cylinder through the feeding mechanism, and the cooling cylinder drives the fertilizer particles to rotate under the action of the first supporting assembly, the second supporting assembly and the power rotating assembly. During the rotation, the fertilizer particles move toward the other end of the cooling cylinder along the inclined direction of the cooling cylinder, and finally flow out from the discharge port at the end of the cooling cylinder. During the movement of the fertilizer particles, the air inlet mechanism sends cold air into the cooling cylinder, and the cold air contacts the fertilizer particles to achieve the cooling effect of the fertilizer particles. The whole process can continuously transport the fertilizer particles into the cooling cylinder without any interruption of the processing procedure, and can fully meet the cooling and cooling requirements of the continuous fertilizer production line, bringing convenience to the production operation of the fertilizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a cross-sectional structural diagram of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the feeding mechanism;

[0021] Figure 4 It is a structural schematic diagram of the push baffle;

[0022] Figure 5 It is a structural schematic diagram of the lifting plate assembly;

[0023] Figure 6 is a structural schematic diagram of a first supporting assembly;

[0024] Figure 7 is a structural schematic diagram of a second supporting assembly;

[0025] Figure 8 It is a schematic diagram of the structure of the power rotating assembly;

[0026] Fig. 9 It is a structural schematic diagram of the air inlet mechanism. DETAILED DESCRIPTION

[0027] 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, any modifications, equivalent replacements, improvements, etc., should be included in the protection scope of the utility model.

[0028] like Figures 1 to 9As shown, this embodiment discloses a granular fertilizer cooling device, including an air inlet mechanism 3, a drum mechanism, and a feeding mechanism 2, wherein the air inlet mechanism 3 and the feeding mechanism 2 are connected to the drum mechanism; the drum mechanism includes a cooling cylinder 1, a first supporting assembly 4, a second supporting assembly 5, and a power rotating assembly 6, the cooling cylinder 1 is supported on the ground by the first supporting assembly 4 and the second supporting assembly 5, and the cooling cylinder 1 is arranged in an inclined shape, the higher end of the cooling cylinder 1 is connected to the feeding mechanism 2, and the lower end of the cooling cylinder 1 is connected to the air inlet mechanism 3; the outer periphery of the middle part of the cooling cylinder 1 is connected to the power rotating assembly 6, and the uniform rolling of the cooling cylinder 1 is achieved through the power rotating assembly 6, and a baffle assembly 7 is arranged on the inner wall of the cooling cylinder 1, and the baffle assembly 7 is used to break up the material to increase the cooling rate.

[0029] The feeding mechanism 2 includes a feeding shell 21, one end of which is a blocking structure, the other end of the feeding shell 21 is connected to an axial end of the cooling cylinder 1 and the feeding shell 21 is rotatably connected to the cooling cylinder 1, and the top of the feeding shell 21 is provided with an exhaust port 211 connected to the inside of the feeding shell 21, and the inside of the feeding shell 21 is provided with a channel shell 22, the channel shell 22 is arranged in an inclined shape, and the top end of the channel shell 22 extends out of the outside of the feeding shell 21 to form a feeding port 221, and the bottom end of the channel shell 22 is provided with a windshield plate 222, and the top end of the windshield plate 222 is connected to the top side pin shaft of the bottom end of the channel shell 22.

[0030] During the feeding operation, the material is fed in from the feed port and enters the cooling cylinder through the channel shell, and the airflow entering from the air inlet mechanism is cooled down by contact with the fertilizer particles and then discharged from the exhaust port at the top of the feed shell; the wind shield can prevent the airflow from flowing out of the channel shell and affecting the smooth inflow of the material.

[0031] The first supporting assembly 4 includes a first fixed seat 41, a first roller seat 42, a first roller 43, and a first positioning ring 44; the first fixed seat 41 is fixedly connected to the ground, and two first roller seats 42 are fixedly connected to the top of the first fixed seat 41 and the first roller 43 is rotatably connected through the first roller seat 42; the first positioning ring 44 is fixedly sleeved on the outside of the cooling cylinder 1 and the first positioning ring 44 is arranged close to the feeding mechanism 2, the axial direction of the first positioning ring 44 is consistent with the axial direction of the first roller 43, and the two sides of the bottom end of the first positioning ring 44 are respectively placed on the two first rollers 43 and abut against the outer peripheral surface of the first roller 43 under the action of gravity of the cooling cylinder 1.

[0032] The second supporting assembly 5 comprises a second fixed seat 51, a second roller seat 52, a second roller 53, a second positioning ring 54, a positioning seat 55, and a positioning wheel 56; the second fixed seat 51 is fixedly connected to the ground and the top height of the second fixed seat 51 is lower than the top height of the first fixed seat 41, the top of the second fixed seat 51 is fixedly connected to two second roller seats 52 and is rotatably connected to the second roller 53 through the second roller seat 52; the second positioning ring 54 is fixedly sleeved on the outside of the cooling cylinder 1 and the second positioning ring 54 is arranged close to the air inlet mechanism 3, and the second positioning ring The axial direction of 54 is consistent with the axial direction of the second roller 53. The two sides of the bottom end of the second positioning ring 54 are respectively placed on the two second rollers 53 and abut against the outer peripheral surfaces of the second rollers 53 under the action of the gravity of the cooling cylinder 1; the second positioning ring 54 is provided with positioning seats 55 on both axial sides, the positioning seats 55 are fixedly connected to the top of the second fixed seat 51, and a positioning wheel 56 is rotatably connected to the positioning seat 55. The axial direction of the positioning wheel 56 is perpendicular to the ground, and the outer peripheral surfaces of the two positioning wheels 56 abut against the bottom end side walls of the second positioning ring 54 on both axial sides.

[0033] The first supporting assembly and the second supporting assembly support the cooling cylinder through rollers and reduce friction for the rotation of the cooling cylinder.

[0034] The power rotating assembly 6 includes a third fixed seat 61, a power motor 62, a reducer 63, a power gear 64, and a driven ring gear 65; the third fixed seat 61 is fixedly connected to the ground, the power motor 62 and the reducer 63 are both fixedly connected to the third fixed seat 61, and the power motor 62 is transmission-connected to the power gear 64 via the reducer 63; the inner wall of the driven ring gear 65 is fixedly sleeved on the outer side of the cooling cylinder 1, and the teeth on the outer periphery of the driven ring gear 65 are meshed and connected with the power gear 64.

[0035] The power motor drives the power gear to rotate, so that the power gear drives the driven gear ring and the cooling cylinder to rotate.

[0036] The first support assembly 4, the second support assembly 5, and the power rotation assembly 6 all include a protective cover 9 for preventing dust and impurities from affecting the normal operation of the positioning ring and the driven gear ring 65. The protective cover 9 is mounted on the outside of the first positioning ring 44 or the second positioning ring 54 or the driven gear ring 65, and the bottom end of the protective cover 9 is fixedly connected to the first fixed seat 41 or the second fixed seat 51 or the third fixed seat 61.

[0037] The baffle assembly 7 includes a plurality of rows of lifting plate combinations, which are arranged in sequence along the axial direction of the cooling cylinder 1; each row of lifting plate combinations is composed of a plurality of V-shaped lifting plates 71 and a plurality of L-shaped lifting plates 72 arranged alternately along the circumferential direction of the cooling cylinder 1, and the staggered arrangement can be a V-shaped lifting plate and an L-shaped lifting plate staggered in sequence, or two V-shaped lifting plates and two L-shaped lifting plates staggered in sequence; the V-shaped lifting plates 71 and L-shaped lifting plates 72 in adjacent rows of lifting plate combinations are all staggered.

[0038] A plurality of push baffles 8 are arranged on the inner wall of one end of the cooling cylinder 1 close to the feeding mechanism 2. The push baffles 8 are arranged at equal intervals along the circumferential direction of the cooling cylinder 1. The push baffles 8 are all arranged in a spiral shape and the bending direction of the push baffles 8 is consistent with the rotation direction of the cooling cylinder 1.

[0039] After the material is fed into the feeding mechanism, the spiral structure of the push baffle can give the material a driving force as it rotates with the cooling cylinder, and quickly feed the material into the cooling cylinder with V-shaped lifting plates and L-shaped lifting plates, avoiding the accumulation of material at the port position of the cooling cylinder and affecting the entry of subsequent materials.

[0040] The vertical cross-section of the V-shaped lifting plate 71 is V-shaped, and the vertical cross-section of the L-shaped lifting plate 72 is L-shaped. One end of the V-shaped lifting plate 71 and the L-shaped lifting plate 72 is fixedly connected to the cooling cylinder 1 and the plane to which the end belongs is consistent with the radial direction of the cooling cylinder 1. The other end of the V-shaped lifting plate 71 and the L-shaped lifting plate 72 is inclined toward the rotation direction of the cooling cylinder 1.

[0041] When the cooling cylinder rotates, the V-shaped lifting plate and the L-shaped lifting plate can drive the fertilizer particles to rotate to the top of the cooling cylinder and then fall down under the action of gravity, thereby increasing the contact area between the fertilizer particles and the airflow in the cooling cylinder and improving the cooling rate of the fertilizer particles. At the same time, by adopting two shapes of lifting plates, the situation of blind spots in lifting when a single-shaped lifting plate is used for lifting can be avoided, thereby improving the use effect of the utility model.

[0042] The air inlet mechanism 3 includes a discharge shell 31 and an air inlet shell 32. One end of the discharge shell 31 is connected to one axial end of the cooling cylinder 1. A discharge port 311 is provided at the bottom end of the discharge shell 31. The other end of the discharge shell 31 is connected to one axial end of the air inlet shell 32. The other axial end of the air inlet shell 32 is provided with an air inlet 321 and is connected to the external air duct through the air inlet 321. Several layers of filter screens 33 are provided in the air inlet shell 32, and the outer edges of the filter screens 33 are fixedly connected to the inner wall of the air inlet shell 32. Several layers of filter screens 33 are arranged at equal intervals along the axial direction of the air inlet shell 32, and the mesh density of the filter screens 33 gradually increases along the flow direction of the airflow in the air inlet shell 32.

[0043] After the fertilizer particles flow along the cooling cylinder into the discharge shell, they flow out from the discharge port at the bottom of the discharge shell; the airflow in the external air duct is filtered through the multi-layer filter screen and then sent into the cooling cylinder for cooling; in industrial production, the external air duct can be the dust removal wind or other wind sources in the factory, which can remove impurities in the airflow after being filtered through the multi-layer filter screen, thus avoiding the impurities from entering the cooling cylinder and affecting the production quality of the fertilizer particles; the utility model can utilize dust removal wind and other wind sources to achieve the cooling and cooling effect of the fertilizer particles through the design of the air inlet mechanism, realizes the resource utilization of dust removal wind and other wind sources, reduces the production cost of fertilizer production operations, and further improves the use effect of the utility model.

[0044] When the utility model performs a feed particle cooling operation, the fertilizer particles on the production line are allowed to enter the cooling cylinder through the feeding mechanism, and the cooling cylinder drives the fertilizer particles to rotate under the action of the first supporting assembly, the second supporting assembly and the power rotating assembly. During the rotation, the fertilizer particles move toward the other end of the cooling cylinder along the inclined direction of the cooling cylinder, and finally flow out from the discharge port at the end of the cooling cylinder. During the movement of the fertilizer particles, the air inlet mechanism sends cold air into the cooling cylinder, and the cold air contacts the fertilizer particles to achieve the cooling effect of the fertilizer particles. The whole process can continuously transport the fertilizer particles into the cooling cylinder without any interruption of the processing procedure, and can fully meet the cooling and cooling requirements of the continuous fertilizer production line, bringing convenience to the production operation of the fertilizer.

Claims

1. A granular fertilizer cooling device, comprising an air inlet mechanism, a drum mechanism, and a feeding mechanism, wherein the air inlet mechanism and the feeding mechanism are both connected to the drum mechanism; characterized in that: The drum mechanism includes a cooling cylinder, a first supporting assembly, a second supporting assembly, and a power rotating assembly. The cooling cylinder is supported on the ground by the first supporting assembly and the second supporting assembly and is arranged in an inclined shape. The higher end of the cooling cylinder is connected to the feeding mechanism, and the lower end of the cooling cylinder is connected to the air inlet mechanism. The outer periphery of the middle part of the cooling cylinder is connected to the power rotating assembly and the cooling cylinder is rolled at a uniform speed through the power rotating assembly. A baffle assembly is arranged on the inner wall of the cooling cylinder and the material is dispersed through the baffle assembly to increase the cooling rate.

2. The granular fertilizer cooling device according to claim 1, characterized in that: The baffle assembly includes several rows of lifting plate assemblies, which are arranged in sequence along the axial direction of the cooling cylinder; each row of lifting plate assemblies is composed of several V-shaped lifting plates and several L-shaped lifting plates arranged alternately along the circumferential direction of the cooling cylinder; the V-shaped lifting plates and L-shaped lifting plates in adjacent rows of lifting plate assemblies are staggered.

3. The granular fertilizer cooling device according to claim 2, characterized in that: The vertical cross-section of the V-shaped lifting plate is V-shaped, and the vertical cross-section of the L-shaped lifting plate is L-shaped. One end of the V-shaped lifting plate and the L-shaped lifting plate is fixedly connected to the cooling cylinder and the plane to which the end belongs is consistent with the radial direction of the cooling cylinder. The other end of the V-shaped lifting plate and the L-shaped lifting plate is inclined toward the rotation direction of the cooling cylinder.

4. The granular fertilizer cooling device according to claim 3, characterized in that: The inner wall of one end of the cooling cylinder close to the feeding mechanism is provided with a plurality of push baffles, which are arranged at equal intervals along the circumferential direction of the cooling cylinder. The push baffles are all arranged in a spiral shape and the bending direction of the push baffles is consistent with the rotation direction of the cooling cylinder.

5. The granular fertilizer cooling device according to claim 4, characterized in that: The first supporting assembly includes a first fixed seat, a first roller seat, a first roller, and a first positioning ring; the first fixed seat is fixedly connected to the ground, two first roller seats are fixedly connected to the top of the first fixed seat and the first roller is rotatably connected to the first roller through the first roller seat; the first positioning ring is fixedly sleeved on the outside of the cooling cylinder and the first positioning ring is arranged close to the feeding mechanism, the axial direction of the first positioning ring is consistent with the axial direction of the first roller, and both sides of the bottom end of the first positioning ring are respectively placed on the two first rollers and abut against the outer peripheral surface of the first roller under the action of the gravity of the cooling cylinder.

6. The granular fertilizer cooling device according to claim 5, characterized in that: The cam is secured to the bottom of the second support frame, and the cam is secured to the bottom of the second support frame, and the cam is secured to the bottom of the second support frame with an axial direction extending from the bottom of the second support frame to the bottom of the second support frame.

7. The granular fertilizer cooling device according to claim 6, characterized in that: The power rotating assembly includes a third fixed seat, a power motor, a reducer, a power gear, and a driven gear ring; The third fixed seat is fixedly connected to the ground, the power motor and the reducer are fixedly connected to the third fixed seat, the power motor is connected to the power gear through the reducer; the inner wall of the driven gear ring is fixedly sleeved on the outside of the cooling cylinder, and the teeth on the outer periphery of the driven gear ring are meshed with the power gear.

8. The granular fertilizer cooling device according to claim 7, characterized in that: The first support assembly, the second support assembly and the power rotating assembly all include a protective cover, which is sleeved on the outside of the first positioning ring or the second positioning ring or the driven gear ring, and the bottom end of the protective cover is fixedly connected to the first fixing seat or the second fixing seat or the third fixing seat.

9. The granular fertilizer cooling device according to claim 8, characterized in that: The feeding mechanism includes a feeding shell, one end of which is a blocking structure, the other end of which is connected to an axial end of the cooling cylinder and the feeding shell is rotatably connected to the cooling cylinder, the top of the feeding shell is provided with an exhaust port connected to the inside of the feeding shell, the inside of the feeding shell is provided with a channel shell, the channel shell is arranged in an inclined shape, the top of the channel shell extends out of the outside of the feeding shell to form a feeding port, the bottom of the channel shell is provided with a wind shield, the top of the wind shield is connected to the top side pin shaft of the bottom end of the channel shell.

10. The granular fertilizer cooling device according to claim 9, characterized in that: The air inlet mechanism includes a discharge shell and an air inlet shell. One end of the discharge shell is connected with one axial end of the cooling cylinder. A discharge port is arranged at the bottom end of the discharge shell. The other end of the discharge shell is connected with one axial end of the air inlet shell. An air inlet is arranged at the other axial end of the air inlet shell and is connected with an external air duct through the air inlet. Several layers of filter screens are arranged in the air inlet shell, and the outer edges of the filter screens are fixedly connected with the inner wall of the air inlet shell. Several layers of filter screens are arranged at equal intervals along the axial direction of the air inlet shell and the mesh density of the filter screens gradually increases along the flow direction of the airflow in the air inlet shell.

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