Granulation equipment and working method thereof

Abstract

The invention relates to granulation equipment and a working method thereof.The granulation equipment comprises a feeding device, a mixing device, a pelletizing device and a discharging device which are sequentially arranged in the direction from feeding to discharging, the pelletizing device structurally comprises an outer cover, a first cooling opening is formed in the end face of the outer cover, a mounting hole is further formed in the end face of the outer cover, and a second cooling opening is formed in the end face of the outer cover; a pelletizing die is installed in the installation hole in a matched mode, a rotating shaft is rotatably installed in the outer cover, one end of the rotating shaft is connected with the output end of the pelletizing motor, a cutter is installed at the other end of the rotating shaft in a matched mode, and the cutter and the pelletizing die are arranged correspondingly. By arranging the pelletizing device, particles can be cooled and solidified in the outer cover, a drying section does not need to be additionally arranged, the space utilization rate of equipment is effectively increased, and the production continuity is improved; meanwhile, the particle curing process is efficient and rapid, energy consumption can be effectively reduced, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of granulating equipment, in particular to a granulating equipment and a working method thereof. BACKGROUND

[0002] The granulating equipment is mainly used for processing powder, block or molten material into particles of specific shape, and is widely applied in chemical industry, pharmacy, fertilizer, food, ceramics, plastics and other industries, and has the effects of improving material fluidity, controlling dissolution rate and reducing dust flying.

[0003] In the prior art, the granulating equipment adopts a long water tank circulating water cooling mode to cool the particles; specifically, after the particles are cut by the cutting device, the particles are transmitted by the long-distance conveying belt and are cooled by the staged spraying device along the path, so that the particles are hardened to obtain finished particles. However, this cooling mode depends on continuous water circulation and long production line layout, and the cooling section often occupies more than 40% of the total production line length, resulting in low space utilization and restricting large-scale production; at the same time, the water circulation system and the refrigeration unit operate in linkage, and the energy consumption cost is high. SUMMARY

[0004] Therefore, it is necessary to provide a granulating equipment and a working method thereof in view of the problems of low space utilization caused by long production line, high energy consumption leading to increased production cost and the need for additional drying section when the granulating equipment in the prior art cools the particles.

[0005] The technical scheme adopted by the present application is as follows: A granulating equipment comprises a feeding device, a mixing device, a cutting device and a discharging device arranged in sequence from the feeding direction to the discharging direction, wherein the structure of the cutting device comprises an outer cover, a first cooling port is formed on the end face of the outer cover, a mounting hole is also formed on the end face of the outer cover, a cutting die is fitted and mounted in the mounting hole, a rotating shaft is rotatably mounted in the inner part of the outer cover, one end of the rotating shaft is connected with the output end of a cutting motor, a cutter is fitted and mounted on the other end of the rotating shaft, and the cutter is arranged correspondingly to the cutting die. The cutting motor drives the rotating shaft to rotate, the cutter is driven to rotate by the rotating shaft, and the rotating cutter cuts the material entering the inner part of the outer cover through the cutting die, so as to form particles.

[0006] As a further improvement of the above technical scheme: The outer cover is in the shape of U, arch or funnel.

[0007] The first cooling port is connected with the cold gas outlet of an external cooling system through a cooling pipe.

[0008] A valve is fitted and mounted on the cooling pipe.

[0009] The first cooling port is matchedly installed with a radiator.

[0010] An arc-shaped plate is matchedly installed below the first cooling port, and a plurality of slots are formed on the end surface of the arc-shaped plate.

[0011] A plurality of second cooling ports are also formed on the end surface of the outer cover, and a single second cooling port is connected with a water mist spraying outlet of the atomizing system through a water mist spraying pipe, so that water mist is introduced into the inner part of the outer cover through the second cooling port.

[0012] The pelletizing die comprises a grinding plate, and a plurality of stepped holes are formed on the end surface of the grinding plate.

[0013] The cutter comprises a cutter holder, and a plurality of cutter shank shafts are uniformly and circumferentially spaced apart on the outer side wall surface of the cutter holder, and a cutter blade is matchedly installed on a single cutter shank shaft.

[0014] A working method using the above pelletizing equipment comprises the following steps: S1. The feeding device delivers the premixed raw material to the inside of the mixing device, and the mixing device is used for mixing and kneading to form a mixture; S2. The mixture is introduced into the inner part of the outer cover through the pelletizing die under the extrusion of the mixing device; Meanwhile, the pelletizing motor drives the cutter to rotate through the rotating shaft; S3. The rotating cutter cuts the mixture introduced into the inner part of the outer cover through the pelletizing die, so as to form particles; Meanwhile, cooling gas is introduced into the inner part of the outer cover through the first cooling port, so that the particles are cooled and solidified; S4. The particles cooled and solidified are discharged through the discharging device.

[0015] The present application has the following advantages: The present application has the following advantages:

[0016] The present application also has the following advantages: (1) The present application sets the outer cover in the shape of U, arch or funnel, which can adapt to different production requirements and space layout, improve the universality and production efficiency of the equipment, and ensure the cooling and solidification effect of the particles.

[0017] (2) The present application sets the valve, which can adjust the on-off of the cooling pipe and the flow of the cooling gas in the cooling pipe according to the type and size of the particles, save energy consumption, and improve production efficiency.

[0018] (3) The arc-shaped plate with notches is arranged, so that the cooling gas can be uniformly distributed in the outer cover, and the cooling effect is effectively improved.

[0019] (4) The second cooling port is arranged, so that the water mist cooling mode is used, the water mist is evaporated to absorb heat, the cooling effect inside the outer cover is further improved, the particles are quickly and uniformly solidified, the product quality is improved, and the cooling efficiency is effectively improved through the synergistic effect of the water mist and the cooling gas.

[0020] (5) The plurality of knife handle shafts and the plurality of blades are arranged, so that the cutting range of the cutter is improved, the particles are quickly and uniformly cut, the cutting efficiency is improved, the single blade can be detachably installed on the corresponding knife handle shaft, the single blade is conveniently replaced and maintained, the use cost is reduced, the stable operation of the equipment is ensured, and the granulation quality is ensured.

[0021] (6) The working method can stably form 80-500 mesh filter pressing to meet the needs of different industries for fineness, the material particle size uniformity is good, production problems caused by uneven particle size can be avoided, waste is reduced, comprehensive cost is reduced, production efficiency is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the application.

[0023] Figure 2 It is a structural schematic diagram of the mixing device in the application.

[0024] Figure 3 It is a top view of Figure 2 .

[0025] Figure 4 It is a sectional view of A-A section in Figure 3 .

[0026] Figure 5 It is a structural schematic diagram of the mixing device in the application Figure 1 .

[0027] Figure 6 It is an explosion view of Figure 5 .

[0028] Figure 7 It is a structural schematic diagram of the mixing device in the application Figure 2 .

[0029] Figure 8 It is a structural schematic diagram of the mixing device in the application Figure 3 .

[0030] Figure 9 It is a lateral full sectional view of Figure 8 .

[0031] Figure 10 This is a schematic diagram of the material discharge device in this invention.

[0032] The components include: 1. feeding device; 2. mixing device; 3. pelletizing device; 4. discharging device; 5. mesh; 6. discharging pipe; 201. First motor; 202. Second motor; 203. First transmission mechanism; 204. Second transmission mechanism; 205. Reducer; 206. Mixing assembly; 207. Screw; 208. Feed hopper; 209. Housing; 210. Screen changer; 301. Outer casing; 302. Pelletizing motor; 303. Rotating shaft; 304. Buffer spring; 305. Grinding plate; 306. Stepped hole; 307. Guide slope; 308. Knife holder; 309. Knife handle shaft; 310. Blade; 311. Arc plate; 312. Groove; 313. First cooling port; 314. Second cooling port; 315. Cooling pipe; 316. Water mist spray pipe; 317. Valve; 318. Radiator; 319. Fixing plate; 320. Movable plate; 321. Mounting base; 322. Connecting base; 323. Adjusting shaft; 324. Adjusting handwheel. Detailed Implementation

[0033] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0034] like Figures 1-10 As shown, the pelletizing equipment of this embodiment includes a feeding device 1, a mixing device 2, a pelletizing device 3, and a discharging device 4 arranged sequentially from the feeding direction to the discharging direction. The structure of the pelletizing device 3 is as follows: it includes an outer cover 301, a first cooling port 313 is opened on the end face of the outer cover 301, and a mounting hole is also opened on the end face of the outer cover 301. A pelletizing die is installed in the mounting hole. A rotating shaft 303 is rotatably installed inside the outer cover 301. One end of the rotating shaft 303 is connected to the output end of the pelletizing motor 302, and a cutting tool is installed on the other end of the rotating shaft 303. The cutting tool is arranged correspondingly to the pelletizing die. The pelletizing motor 302 drives the rotating shaft 303 to rotate, and the rotating shaft 303 drives the cutting tool to rotate. The rotating cutting tool cuts the material that enters the outer cover 301 through the pelletizing die, thereby forming pellets. The granulation equipment in this embodiment, by setting up a pelletizing device 3, can cool and solidify the particles inside the outer casing 301. Compared with traditional equipment using water cooling, there is no need to set up an additional drying section, thereby effectively improving the space utilization of the equipment and improving production continuity. At the same time, the particle solidification process is efficient and fast, which can effectively reduce energy consumption and reduce production costs.

[0035] The outer casing 301 is U-shaped, bow-shaped, or funnel-shaped, adaptable to different production needs and spatial layouts, improving equipment versatility, production efficiency, and ensuring effective particle cooling and solidification; for example... Figures 5-6As shown in the drawings, the outer cover 301 is U-shaped, simple in structure and easy to process; as shown in the drawings, Figure 7 As shown in the drawings, the outer cover 301 is an arc-shaped arc, which is convenient and fast for discharging a large amount of materials; as shown in the drawings, Figures 8-9 As shown in the drawings, the outer cover 301 is funnel-shaped, which is beneficial for particle gathering and reducing residues.

[0036] As shown in the drawings, Figures 5-6 As shown in the drawings, the first cooling port 313 is connected with the cold gas outlet of the external cooling system through the cooling pipe 315. The external cooling system can be a refrigeration device such as an industrial refrigerator, which can generate cooling gas. The cooling gas generated by the external cooling system is transported to the inside of the outer cover 301 through the cooling pipe 315.

[0037] As shown in the drawings, Figure 7 As shown in the drawings, the valve 317 is installed on the cooling pipe 315. By setting the valve 317, the on-off of the cooling pipe 315 and the flow of the cooling gas in the cooling pipe 315 can be adjusted according to the type and size of the particles, thereby saving energy consumption and improving production efficiency.

[0038] As shown in the drawings, Figures 8-9 As shown in the drawings, the radiator 318 is installed in the first cooling port 313. The cooling fluid is introduced into the radiator 318, so that the radiator 318 radiates cold to the inside of the outer cover 301, and then the temperature in the inside of the outer cover 301 is reduced to cool the particles.

[0039] As shown in the drawings, Figure 6 As shown in the drawings, the arc-shaped plate 311 is installed below the first cooling port 313. A plurality of grooves 312 are formed on the end surface of the arc-shaped plate 311, which can guide the cooling gas to be uniformly distributed in the outer cover 301, thereby effectively improving the cooling effect.

[0040] As shown in the drawings, Figures 5-6 , Figure 8 As shown in the drawings, a plurality of second cooling ports 314 are formed on the end surface of the outer cover 301. Each second cooling port 314 is connected with the water mist outlet of the atomizing system through the water mist injection pipe 316, so that water mist is introduced into the inside of the outer cover 301 through the second cooling port 314. By setting the second cooling port 314, the water mist cooling method can be used to further improve the cooling effect in the inside of the outer cover 301 by water mist evaporation heat absorption, thereby ensuring the rapid and uniform solidification of the particles and improving the product quality. At the same time, the water mist and the cooling gas can effectively improve the cooling efficiency.

[0041] The cutting die includes the grinding plate 305, and a plurality of stepped holes 306 are formed on the end surface of the grinding plate 305. In this embodiment, the large hole and the small hole of each stepped hole 306 are connected through the guide slope 307. By setting the guide slope 307, the mixture can be conveniently passed, and the mixture can be prevented from being accumulated in the stepped hole 306, thereby reducing the probability of blockage.

[0042] ​The cutter comprises a tool holder 308, a plurality of tool shank shafts 309 are uniformly and circumferentially spaced on the outer side wall surface of the tool holder 308, and a cutter blade 310 is mounted on each tool shank shaft 309. By arranging a plurality of tool shank shafts 309 and a plurality of cutter blades 310, the cutting range of the cutter can be improved, so that the cutting efficiency is improved; in addition, each cutter blade 310 can be detachably mounted on the corresponding tool shank shaft 309, so that the single replacement and maintenance are facilitated, the use cost is reduced, and the stable operation of the equipment and the granulation quality are ensured.

[0043] As shown in Figure 6 , the outer circumferential surface of the rotating shaft 303 is sleeved with a buffer spring 304, and the buffer spring 304 is arranged between the cutter and the inner side wall surface of the outer cover 301; by arranging the buffer spring 304, the rotation stability can be improved when the cutter rotates to cut the particles, the cutting uniformity is ensured, and the granulation quality and the stability of the equipment operation are improved.

[0044] As shown in Figure 9 , the cutting motor 302 is arranged outside the outer cover 301, the bottom of the cutting motor 302 is fixed with a movable plate 320, the lower portion of the movable plate 320 is arranged with a fixed plate 319, and the end surface of the fixed plate 319 is provided with an avoiding groove for the extension of a connecting seat 322; a plurality of mounting seats 321 are fixed on the bottom of the fixed plate 319, the fixed plate 319 is mounted with an adjusting shaft 323 through the mounting seat 321, the outer circumferential surface of the adjusting shaft 323 is provided with an external thread, one end of the adjusting shaft 323 is provided with an adjusting hand wheel 324, and the other end of the adjusting shaft 323 is connected with the connecting seat 322; by rotating the adjusting hand wheel 324 to adjust the adjusting shaft 323, the adjusting shaft 323 moves linearly along the horizontal direction relative to the fixed plate 319 under the action of the external thread, the connecting seat 322 slides in the avoiding groove, so that the movable plate 320 is driven by the connecting seat 322 to move linearly along the horizontal direction, and then the cutting motor 302 is driven to move linearly along the horizontal direction to approach or away from the outer cover 301; The cutting motor 302 moving along the horizontal direction drives the cutter to move linearly along the horizontal direction to approach or away from the grinding plate 305 through the rotating shaft 303, so that the linear distance between the cutter and the grinding plate 305 can be adjusted, and then the effective gap between the two can be adjusted to match the cutting requirements of different materials, ensure the cutting accuracy, and improve the particle quality; at the same time, the gap change caused by the wear of the cutter can be compensated, and the service life of the grinding plate 305 and the cutter is prolonged; in addition, the adjusting operation can be realized by rotating the adjusting hand wheel 324, which is convenient and fast.

[0045] In the embodiment, the feeding device 1 adopts a lifting machine for material conveying.

[0046] In the embodiment, the mixing device 2 adopts a banbury mixer, and the structure of the mixing device 2 is as follows: a box body 209 is provided, a stirring assembly 206 and a screw rod 207 are rotatably arranged in the box body 209, the stirring assembly 206 is connected with the output end of a first motor 201 through a first transmission mechanism 203, and the screw rod 207 is connected with the output end of a second motor 202 through a second transmission mechanism 204; the first motor 201 drives the stirring assembly 206 to rotate, so that the materials in the box body 209 are mixed; the second motor 202 drives the screw rod 207 to rotate, so that the materials in the box body 209 are mixed and conveyed; in addition, a speed reducer 205 is cooperatively arranged between the screw rod 207 and the second transmission mechanism 204, which is used for finely controlling the rotating speed of the screw rod 207, so as to effectively control the discharging speed of the mixed materials.

[0047] In the embodiment, the stirring assembly 206 includes a plurality of stirring shafts, a plurality of helical stirring blades are cooperatively arranged on the outer circumferential surface of each stirring shaft, the stirring shafts rotate to drive the stirring blades to rotate, and then the materials are stirred.

[0048] In the embodiment, the first transmission mechanism 203 and the second transmission mechanism 204 both adopt a chain transmission mode.

[0049] A feeding hole is formed in the top wall surface of the box body 209, and a feeding hopper 208 is cooperatively arranged at the feeding hole, so as to facilitate the feeding of the materials conveyed by the elevator; a discharging hole is formed in the side wall surface of the box body 209, and a filter screen is cooperatively arranged at the discharging hole, so as to filter the mixed materials and ensure the uniformity thereof; in order to ensure the filtering effect of the filter screen, the filter screen is rapidly replaced by a screen changer 210 at a certain frequency; in addition, a flange plate is arranged at the tail portion of the box body 209, and the flange plate is connected with the grinding plate 305, so that the discharging hole faces the grinding plate 305, and then the mixed materials are conveyed from the box body 209 to the outer cover 301 through the screw rod 207.

[0050] The discharging device 4 adopts a vibrating screen, at least one discharging pipe 6 is cooperatively arranged at the bottom of the conveying end surface of the vibrating screen, and a mesh 5 is formed in the conveying end surface of the vibrating screen corresponding to the feeding inlet of each discharging pipe 6.

[0051] In the embodiment, the bottom of the outer cover 301 is provided with an opening, which serves as a discharging port, and the particles formed by the cutter are dropped onto the conveying end surface of the vibrating screen through the opening.

[0052] By using the above granulating equipment, the embodiment provides a working method, which includes the following steps: S1. The feeding device 1 delivers the premixed raw materials to the inside of the mixing device 2, and the mixing device 2 is used for mixing and forming the mixture; in the embodiment, a premixing device can be arranged at the feeding inlet of the feeding device 1, and the premixing device can be a mixer or other device capable of mixing raw materials, so that the premixing device can further improve the uniformity of the mixture; S2. The mixture is extruded by the mixing device 2 and enters the inside of the outer cover 301 through the pelletizing die; at the same time, the pelletizing motor 302 drives the cutter to rotate through the rotating shaft 303; S3. The rotating cutter cuts the mixture entering the inside of the outer cover 301 through the pelletizing die, so as to form the particles; at the same time, the cooling gas is introduced into the inside of the outer cover 301 through the first cooling port 313, and the cooling water mist is introduced into the inside of the outer cover 301 through the second cooling port 314, so as to cool and solidify the particles; The pelletizing device 3 of the embodiment can stably form 150-300 mesh particles to meet the needs of different industries for particle fineness, and the particle size uniformity is good, which can avoid production problems caused by uneven particles, reduce waste, reduce the comprehensive cost, and effectively improve the production benefit; S4. The cooled and solidified particles are discharged through the discharging device 4; the discharging device 4 of the embodiment can realize the recovery of different mesh particle products by arranging a plurality of mesh holes 5 with different diameters and corresponding different discharging pipes 6, and can also screen out unqualified particles, further improving the particle quality.

[0053] The above description is an explanation of the application, not a limitation of the application, and the scope of the application is defined in the claims. Any modification within the protection scope of the application can be made.

Claims

1. A granulation equipment, characterized in that: The device includes a feeding device (1), a mixing device (2), a pelletizing device (3), and a discharging device (4) arranged sequentially from the feeding direction to the discharging direction. The structure of the pelletizing device (3) is as follows: it includes an outer cover (301), a first cooling port (313) is provided on the end face of the outer cover (301), and an installation hole is also provided on the end face of the outer cover (301). A pelletizing mold is installed in the installation hole. A rotating shaft (303) is rotatably installed inside the outer cover (301). One end of the rotating shaft (303) is connected to the output end of the pelletizing motor (302), and a cutting tool is installed on the other end of the rotating shaft (303). The cutting tool is arranged correspondingly to the pelletizing mold. The pelletizing motor (302) drives the rotating shaft (303) to rotate, and the rotating shaft (303) drives the cutting tool to rotate. The rotating cutting tool cuts the material that enters the outer cover (301) through the pelletizing mold, thereby forming pellets.

2. The granulation equipment as described in claim 1, characterized in that: The outer cover (301) is U-shaped, bow-shaped, or funnel-shaped.

3. The granulation equipment as described in claim 1, characterized in that: The first cooling port (313) is connected to the cold air outlet of the external cooling system through a cooling pipe (315).

4. The granulation equipment as described in claim 3, characterized in that: A valve (317) is installed on the cooling pipe (315).

5. The granulation equipment as described in claim 1, characterized in that: A radiator (318) is installed inside the first cooling port (313).

6. The granulation equipment as described in claim 1, characterized in that: An arc-shaped plate (311) is installed below the first cooling port (313), and several slots (312) are opened on the end face of the arc-shaped plate (311).

7. The granulation equipment as described in claim 1, characterized in that: Several second cooling ports (314) are also provided on the end face of the outer cover (301). Each second cooling port (314) is connected to the water mist outlet of the atomization system through a water mist spray pipe (316), so that water mist is introduced into the interior of the outer cover (301) through the second cooling port (314).

8. The granulation equipment as described in claim 1, characterized in that: The pelletizing die includes a grinding plate (305), and several stepped holes (306) are formed on the end face of the grinding plate (305).

9. The granulation equipment as described in claim 1, characterized in that: The cutting tool includes a tool holder (308), and several tool holder shafts (309) are evenly spaced along the outer side of the tool holder (308). A cutting blade (310) is fitted on each tool holder shaft (309).

10. A method of operating the granulation equipment as described in claim 1, characterized in that: Includes the following steps: S1. The feeding device (1) transports the premixed raw materials to the interior of the mixing device (2), and the mixing device (2) mixes the materials to form a mixture. S2. The mixture is extruded by the mixing device (2) and enters the outer cover (301) through the pelletizing die; Meanwhile, the pelletizing motor (302) drives the cutter to rotate via the rotating shaft (303); S3. The rotating blade cuts the mixture that enters the outer casing (301) through the pelletizing die, thereby forming pellets; At the same time, cooling gas is introduced into the outer casing (301) through the first cooling port (313), thereby causing the particles to cool and solidify; S4. The cooled and solidified granules are discharged through the discharge device (4).

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