A ball mill for preparing a prilling fertilizer

Abstract

This utility model discloses a ball mill for preparing fertilizer by spraying granulation, relating to the field of ball mills for fertilizer preparation. The ball mill includes a base, a support plate fixedly mounted on the base, a cooling box disposed between two support plates, and a cylinder disposed within the cooling box cavity. Rotating cylinders are fixedly connected to both ends of the cylinder, and these rotating cylinders rotate with the support plates. A cooling chamber is formed between the cylinder and the cooling box, and the cooling chamber is connected to a cooling source via a pipe. The ball mill drives the cylinder to rotate via a power unit. The rotation of the cylinder drives a fan to rotate rapidly via a drive gear, a driven gear, and a rotating rod. The fan generates forced airflow, drawing cooled air into the cooling chamber from the outlet of the cooling box. The airflow flows along the outer surface of the cylinder within the cooling chamber, effectively absorbing and carrying away the heat generated by friction during the grinding process, thus cooling the cylinder.

Description

Technical Field

[0001] This utility model relates to the field of ball mill technology for fertilizer preparation, specifically a ball mill for spray granulation fertilizer preparation. Background Technology

[0002] In the fertilizer preparation process, many fertilizer raw materials (especially minerals) are in the form of lumps or coarse particles in their natural state, which cannot be directly used for subsequent reactions or mixing. Ball mills are needed to grind these raw materials into fine powder in order to improve their reactivity and uniformity.

[0003] In the prior art, a utility model patent with Chinese patent publication number CN202320280809.9 discloses a ball mill structure for concrete material processing. The device mainly includes a base and a ball mill body mounted on it. Two sets of support seats are symmetrically arranged on both sides of the base to support the ball mill body. One end of the ball mill body has a rotatable feed pipe, and the outer wall of the discharge pipe at the other end is connected to the base via another set of support columns to ensure the stability of the equipment during operation. A drive mechanism is also configured above the base to drive the entire ball mill body to rotate and complete the grinding operation. The device has a cleaning mechanism on top of the two sets of support seats, including a mounting frame with an electric telescopic rod installed at the center of its bottom for adjusting the height of the cleaning components. A diversion pipe is connected below the mounting frame, with multiple nozzles evenly arranged at the bottom of the diversion pipe to spray cleaning fluid to remove residual materials. Several adjusting rods are also provided on the mounting seats on both sides of the diversion pipe, with cleaning brushes at their bottom ends. These brushes can automatically clean the outer wall of the ball mill body under the drive of the electric telescopic rod, improving equipment maintenance efficiency.

[0004] However, in practical applications, this ball mill has significant functional limitations: the intense friction during the grinding process generates a large amount of heat, causing the internal temperature of the ball mill to rise continuously, which may lead to material agglomeration, adhesion to the walls, and even affect grinding efficiency and product quality. The device is not equipped with an effective internal cooling system and lacks a heat dissipation design for the cylinder, relying solely on natural cooling from the outside air, resulting in poor cooling performance.

[0005] To address the shortcomings of existing technologies, this invention provides a ball mill for preparing spray-granulated fertilizer, thereby solving the aforementioned problems. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a ball mill for preparing spray granulation fertilizer, which solves the problem that the ball mill is not equipped with an effective internal cooling system and lacks heat dissipation design for the cylinder, relying solely on natural cooling from the outside air, resulting in poor cooling effect.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a ball mill for preparing spray granulation fertilizer, comprising a base, a support plate fixedly installed on the base, a cooling box disposed between two support plates, and a cylinder disposed in the inner cavity of the cooling box. Both ends of the cylinder are fixedly connected to rotating cylinders, and the rotating cylinders rotate with the support plates. A cooling cavity is formed between the cylinder and the cooling box. The cooling cavity is connected to a cooling source through a pipe. A blowing unit is disposed inside the cooling cavity. The blowing unit is used to drive air through the pipe to blow the cold air from the cooling source onto the surface of the cylinder.

[0008] The blower unit includes: a drive gear, which is fixedly connected to the surface of the barrel;

[0009] The driven gear meshes with the driving gear;

[0010] The rotating rod is fixedly connected to the driven gear;

[0011] The fan is fixedly connected to the rotating rod.

[0012] Preferably, one of the rotating cylinders is rotatably connected to a feed hopper, and the feed hopper is fixedly connected to a support plate; the other rotating cylinder is rotatably connected to the support plate; and one end of the rotating cylinder is connected to a power unit.

[0013] Preferably, the power unit includes a motor, which is fixedly connected to the base;

[0014] The second synchronous pulley is fixedly connected to the output shaft of the motor;

[0015] The timing belt is rotatably connected to the second timing pulley;

[0016] The first synchronous pulley is rotatably connected to the synchronous belt, and the first synchronous pulley is fixedly connected to the surface of the rotating cylinder.

[0017] Preferably, the cooling source includes: a refrigeration box, which is fixedly connected to the refrigeration box;

[0018] An air inlet pipe is connected to the air outlet of the refrigeration unit, and the air inlet pipe is connected to the cooling chamber;

[0019] The exhaust pipe is connected to the air inlet of the refrigeration box and to the cooling chamber.

[0020] Preferably, one end of the air intake pipe that passes through the cooling box is connected to an annular pipe disposed in the cooling chamber, and the annular pipe surrounds the surface of the barrel, and the interior of the annular pipe is connected to jet nozzles arranged at equal intervals.

[0021] Preferably, a discharge cylinder is fixedly connected to the bottom of the barrel, and a rotating plate is fixedly connected to the outer surface of the discharge cylinder, the rotating plate being rotatably connected to the cooling box.

[0022] The technical effects and advantages of this utility model are as follows:

[0023] This ball mill for spray granulation fertilizer preparation uses a power unit to drive the barrel to rotate. The rotation of the barrel drives the rotating rod to rotate at high speed via the drive gear and driven gear, which in turn drives the fan to rotate rapidly. The fan generates forced airflow, which draws cooled air into the cooling chamber from the outlet of the cooling box. The airflow flows along the outer surface of the barrel in the cooling chamber, effectively absorbing and carrying away the heat generated by friction during the grinding process, thus cooling the barrel. The heated air, driven by the airflow, is guided from the other end of the cooling chamber through the exhaust pipe into the cooling box, where it undergoes forced cooling, rapidly cooling it into low-temperature gas, completing the entire heat dissipation cycle. This eliminates the need for an additional independent fan, achieving dynamic heat dissipation of the barrel surface and preventing material agglomeration, wall adhesion, or equipment overheating damage caused by excessive temperature. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0027] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0028] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A;

[0029] Figure 5 This is a cross-sectional structural diagram of the present invention.

[0030] In the diagram: 1. Base; 2. Support plate; 3. Cooling box; 4. Machine barrel; 5. Rotating cylinder; 6. Feed hopper; 7. Power unit; 71. First synchronous pulley; 72. Synchronous belt; 73. Second synchronous pulley; 74. Motor; 8. Drive gear; 9. Driven gear; 10. Rotating rod; 11. Fan; 12. Discharge cylinder; 13. Rotating plate; 14. Annular pipe; 141. Jet nozzle; 15. Air inlet pipe; 16. Refrigeration box; 17. Exhaust pipe. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] This embodiment discloses a ball mill for preparing spray-granulated fertilizer, according to the attached... Figure 1 To be continued Figure 5 As shown, it includes a base 1, two support plates 2 are fixedly installed on the top of the base 1, a cooling box 3 is fixedly installed between the two support plates 2, a machine cylinder 4 is provided on the inner cavity of the cooling box 3, and rotating cylinders 5 are fixedly installed at both ends of the machine cylinder 4. The two rotating cylinders 5 are rotatably connected to the two support plates 2 respectively. A cooling cavity is formed between the cooling box 3 and the machine cylinder 4. The cooling cavity is connected to a cooling source through a pipe.

[0033] The cooling source consists of an annular pipe 14, a jet nozzle 141, an air inlet pipe 15, a cooling box 16, and an exhaust pipe 17. The cooling box 16 is fixedly installed on the base 1. The air outlet of the cooling box 16 is connected to the air inlet pipe 15. The air inlet pipe 15 is fixedly connected to the cooling box 3. One end of the air inlet pipe 15 passes through the cooling box 3 and is connected to the annular pipe 14. The annular pipe 14 is wrapped around the outer periphery of the barrel 4. The annular pipe 14 is connected to the air nozzles 141 arranged at equal intervals. The air inlet of the cooling box 16 is connected to the exhaust pipe 17. The other end of the exhaust pipe 17 is connected to the cooling chamber.

[0034] The interior of the refrigeration box 16 is equipped with a refrigeration system and a refrigeration chamber. The air inlet of the refrigeration chamber is connected to the exhaust pipe 17, and the air outlet of the refrigeration chamber is connected to the air inlet pipe 15. The refrigeration system is installed inside the refrigeration chamber so that the refrigeration system cools the air blown in from the exhaust pipe 17 and then cools the air entering the air inlet pipe 15 from the air outlet.

[0035] A blower unit is installed inside the cooling chamber. The blower unit consists of a drive gear 8, a driven gear 9, a rotating rod 10, and a fan 11. Multiple drive gears 8 are fixedly installed on both sides of the barrel 4. The surface of the drive gear 8 meshes with the driven gear 9. The rotating rod 10 is fixedly installed inside the driven gear 9. The fan 11 is fixedly installed at one end of the rotating rod 10, and the surface of the rotating rod 10 is rotatably connected to a connecting plate. The top of the connecting plate is fixedly connected to the inner wall of the cooling box 3. The fan 11 on the side closer to the annular tube 14 rotates to blow air, while the fan 11 on the other side rotates to draw air.

[0036] One of the rotating cylinders 5 is rotatably connected to a feed hopper 6, and the surface of the feed hopper 6 is fixedly mounted on a support plate 2. The other rotating cylinder 5 is connected to a power unit 7 through one end of the support plate 2. The power unit 7 consists of a first synchronous pulley 71, a synchronous belt 72, a second synchronous pulley 73, and a motor 74. The motor 74 is fixedly mounted on the base 1. The output shaft of the motor 74 is fixedly mounted on the second synchronous pulley 73. The surface of the second synchronous pulley 73 is rotatably connected to the synchronous belt 72. The other side of the synchronous belt 72 is rotatably connected to the first synchronous pulley 71, and the first synchronous pulley 71 is fixedly mounted on the surface of the rotating cylinder 5.

[0037] A discharge cylinder 12 is fixedly installed at the center of the machine barrel 4, and a rotating plate 13 is fixedly installed on the surface of the discharge cylinder 12, and the rotating plate 13 is rotatably connected to the cooling box 3.

[0038] Example 1: This example uses the cooling pair of barrel 4 as an example, combined with the attached... Figure 1 Detailed description of the working process: The working process is as follows: Start the motor 74, which drives the second synchronous pulley 73 connected to its output shaft to rotate. The second synchronous pulley 73 transmits power to the first synchronous pulley 71 through the synchronous belt 72, thereby driving the rotating cylinder 5 and the machine cylinder 4 connected to it to rotate synchronously, realizing the grinding motion required for ball milling.

[0039] At the same time, the rotation of the barrel 4 drives the drive gear 8 to rotate together. The drive gear 8 meshes with the driven gear 9, transmitting the rotational power to the driven gear 9. The driven gear 9 drives the rotating rod 10 to rotate at high speed, thereby driving the fan 11 installed at its end to rotate rapidly.

[0040] After the fan 11 rotates, it generates a forced airflow, which draws the outside air into the cooling chamber through the air intake pipe 15. The airflow flows along the outer surface of the barrel 4 in the cooling chamber, effectively absorbing and carrying away the heat generated by friction during the grinding process, thereby cooling the barrel.

[0041] After absorbing heat, the hot air is propelled by the airflow and enters the exhaust pipe 17 from the other end of the cooling chamber, and is finally discharged outside the equipment, completing the entire heat dissipation cycle;

[0042] This structure, through the linkage of the barrel 4, the driving gear 8, and the driven gear 9 with the fan 11, forms a passive but continuously effective air-cooling system. It eliminates the need for an additional independent fan, achieving dynamic heat dissipation on the surface of the barrel 4 and preventing material from clumping, sticking to the wall, or overheating damage to the equipment due to excessive temperature.

[0043] Example 2: This example uses the cooling pair of barrel 4 as an example, combined with the attached... Figure 1 Detailed Workflow: The workflow is as follows: After absorbing heat through the barrel 4, the high-temperature air is guided through the exhaust pipe 17 into the refrigeration chamber 16. Inside the refrigeration chamber, the built-in refrigeration system, such as a compressor or semiconductor cooling device, forces the incoming hot air to cool rapidly into a low-temperature gas.

[0044] The cooled air enters the intake pipe 15 from the outlet of the refrigeration box 16, forming a closed-loop air duct. The cold air enters the annular pipe 14 again through the intake pipe 15, and after being evenly distributed inside the annular pipe 14, it is directionally ejected from multiple jet nozzles 141 arranged around its perimeter, directly acting on the outer surface of the barrel 4 to cool the barrel 4.

[0045] This multi-point, circumferential cold air blowing method significantly enhances the contact area and heat exchange efficiency between the airflow and the surface of the barrel 4, achieving rapid and uniform cooling of the barrel 4 and effectively avoiding local overheating problems.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ball mill for preparing spray-granulated fertilizer, comprising a base (1), a support plate (2) fixedly mounted on the base (1), a cooling box (3) disposed between two support plates (2), and a mill cylinder (4) disposed within the inner cavity of the cooling box (3), characterized in that: Both ends of the barrel (4) are fixedly connected to rotating cylinders (5), and the rotating cylinders (5) rotate with the support plate (2). A cooling chamber is formed between the barrel (4) and the cooling box (3). The cooling chamber is connected to a cooling source through a pipe. A blowing unit is provided inside the cooling chamber. The blowing unit is used to drive air through the pipe to blow the cold air on the cooling source to the surface of the barrel (4). The blowing unit includes: a drive gear (8), which is fixedly connected to the surface of the barrel (4); The driven gear (9) meshes with the driving gear (8); The rotating rod (10) is fixedly connected to the driven gear (9); The fan (11) is fixedly connected to the rotating rod (10).

2. The ball mill for preparing spray-granulated fertilizer according to claim 1, characterized in that, One of the rotating cylinders (5) is rotatably connected to a feed hopper (6), and the feed hopper (6) is fixedly connected to a support plate (2). The other rotating cylinder (5) is rotatably connected to the support plate (2), and one end of the rotating cylinder (5) is connected to a power unit (7).

3. The ball mill for preparing spray-granulated fertilizer according to claim 2, characterized in that, The power unit (7) includes: a motor (74), which is fixedly connected to the base (1); The second synchronous pulley (73) is fixedly connected to the output shaft of the motor (74); The timing belt (72) is rotatably connected to the second timing pulley (73); The first synchronous pulley (71) is rotatably connected to the synchronous belt (72), and the first synchronous pulley (71) is fixedly connected to the surface of the rotating cylinder (5).

4. The ball mill for preparing spray-granulated fertilizer according to claim 1, characterized in that, The cooling source includes: a refrigeration box (16), which is fixedly connected to the refrigeration box (16); An air inlet pipe (15) is connected to the air outlet of the refrigeration box (16), and the air inlet pipe (15) is connected to the cooling chamber; The exhaust pipe (17) is connected to the air inlet of the refrigeration box (16) and the exhaust pipe (17) is connected to the cooling chamber.

5. The ball mill for preparing spray-granulated fertilizer according to claim 4, characterized in that, The intake pipe (15) passes through the cooling box (3) and is connected to an annular pipe (14) disposed in the cooling chamber. The annular pipe (14) surrounds the surface of the barrel (4). The interior of the annular pipe (14) is connected to jet nozzles (141) arranged at equal intervals.

6. The ball mill for preparing spray-granulated fertilizer according to claim 1, characterized in that, The bottom of the barrel (4) is fixedly connected to a discharge cylinder (12), and a rotating plate (13) is fixedly connected to the outer surface of the discharge cylinder (12). The rotating plate (13) is rotatably connected to the cooling box (3).

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