A vertical rotary continuous granulation apparatus

Abstract

This utility model relates to a vertical rotary continuous granulation device in the field of reaction vessel technology, comprising a coating vessel, a reaction vessel, and a cooling vessel. The coating vessel includes a first heating furnace body, a coating inner liner, and a stirring shaft. The first heating furnace body has a cylindrical hollow structure and is fitted onto the surface of the coating inner liner. The stirring shaft is rotatably inserted into the interior of the coating inner liner. The coating vessel is arranged vertically along the axis of the stirring shaft. The reaction vessel includes a second heating furnace and a rotary drum. The second heating furnace has a cylindrical hollow structure and is fitted onto the surface of the rotary drum, with both ends of the rotary drum extending to the outside of the second heating furnace. Both the reaction vessel and the cooling vessel are arranged horizontally along the axis of the rotary drum, which allows the powder to be evenly distributed and stirred within the coating inner liner. Under its own weight, the powder can be compressed against itself, improving the fusion between the powder and the binder, allowing the powder to repeatedly bond, agglomerate, and increase in size, thus improving the granulation quality of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of fluid sensor technology, and in particular to a vertical rotary continuous granulation device. Background Technology

[0002] A continuous granulation reactor is a commonly used industrial device, primarily used to granulate powdered or granular raw materials through physical or chemical processes. Its working principle involves gradually heating the raw materials and mixing them with additives using mechanical and thermal forces to form a mixture with a specific moisture content. Then, the mixture is continuously propelled into the granulation chamber via rotation or vibration, where it undergoes compression, shaping, and solidification processes to ultimately form the desired granules.

[0003] The existing continuous granulation production method involves loading powder into a coating vessel, adding it to the surface of the vessel to make the powder boil (fluidize), then adding a mist binder. Under the protection of a nitrogen atmosphere, the powder mixed with additives is heated and stirred. During the boiling process, the surface tension of the liquid material increases, and the particles agglomerate and stick together to form the particles required by the process. Hot air is then introduced to dry the material, which is then transported to the granulation and drying reactor for further processing.

[0004] However, existing coating reactors are all horizontally positioned, similar to cooling reactors, requiring prolonged stirring inside the reactor to ensure proper mixing and agglomeration of the powder. Therefore, there is an urgent need to develop a vertical rotary continuous granulation equipment to meet practical application requirements. Utility Model Content

[0005] The purpose of this invention is to provide a vertical rotary continuous granulation device to solve the above-mentioned defects.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A vertical rotary continuous granulation device includes a coating vessel, a reaction vessel, and a cooling vessel. The coating vessel, reaction vessel, and cooling vessel are all connected by a spiral conveying mechanism. The coating vessel includes a first heating furnace body, a coating inner liner, and a stirring shaft. The first heating furnace body is a cylindrical hollow structure and is fitted onto the surface of the coating inner liner. The stirring shaft is rotatably inserted into the interior of the coating inner liner. The coating vessel is vertically arranged along the axis of the stirring shaft. The bottom end of the coating inner liner is connected to the reaction vessel via the spiral conveying mechanism. The reaction vessel includes a second heating furnace and a rotary drum. The second heating furnace is a cylindrical hollow structure and is fitted onto the surface of the rotary drum, with both ends of the rotary drum extending to the outside of the second heating furnace. The rotary drum is rotatably arranged inside the second heating furnace. The reaction vessel and the cooling vessel are both horizontally arranged along the axis of the rotary drum.

[0007] In the above description, as a further embodiment, the top of the stirring shaft extends to the outside of the top of the inner liner, and a drive gear is provided at the top of the stirring shaft. The stirring shaft is rotatably disposed inside the inner liner via the drive gear.

[0008] As a further embodiment of the above description, the middle part of the stirring shaft is provided with several outwardly protruding stirring blades. The stirring blades are fan-shaped, and several stirring blades on the same side are arranged in a vertical linear structure. The stirring blades on adjacent sides are arranged in an alternating structure.

[0009] As a further embodiment of the above description, the top edge of the inner liner is provided with an inlet for powder feeding, the bottom of the inner liner is a truncated cone, and the inner liner is connected to the screw conveyor mechanism through the truncated cone. The bottom of the stirring shaft is provided with an outwardly inclined scraper, which abuts against the inner wall of the truncated cone.

[0010] As a further embodiment of the above description, both ends of the rotary drum are provided with a bearing mechanism. The bearing mechanism includes a roller and a bracket. The roller is horizontally rotatably mounted on the top of the bracket, and the bottom of the bracket is fixed on the working plane. The end of the rotary drum rolls against the surface of the roller.

[0011] As a further embodiment of the above description, one end of the rotary drum is provided with a drive mechanism, which includes a chain and a drive motor. The end of the rotary drum near the drive mechanism is provided with a first sprocket, and the output end of the drive motor is provided with a second sprocket. The chain has a structure with the ends connected, one side of the chain is wrapped around the surface of the first sprocket, and the other side of the chain is wrapped around the second sprocket at the output end of the drive motor. The drive motor and the rotary drum are connected by a chain for transmission.

[0012] As a further embodiment of the above description, both the first heating furnace and the second heating furnace body are composed of an outer shell, a heat insulation layer and a heating element. The heat insulation layer covers the inner wall of the outer shell, and the side of the heat insulation layer near the inner liner and the rotating drum is provided with an inwardly recessed heat source cavity. The heating element is disposed inside the heat source cavity to heat the inner liner and the rotating drum.

[0013] As a further solution described above, the insulation layer is made of a cotton layer of aluminum silicate fiber, and the heating element is made of a resistance band.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: By adopting a vertical structure to set the coating vessel on one side of the reaction vessel, and by setting the top and bottom of the coating vessel with a screw conveyor mechanism, the powder and the agglomerated semi-finished material are conveyed by the screw conveyor mechanism. During the powder stirring process, the powder can accumulate in the vertical structure of the coating vessel. Under the action of its own weight, the powder falls evenly into the inside of the coating vessel. On the one hand, the powder is evenly distributed and stirred in the coating vessel. On the other hand, the powder can be squeezed together under its own weight, which improves the fusion between the powder and the binder, so that the powder can be repeatedly bonded, agglomerated and enlarged, and the granulation quality of the equipment is improved. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a vertical rotary continuous granulation device described in this embodiment; Figure 2 for Figure 1 A partially enlarged schematic diagram of structure A in the middle; Figure 3 for Figure 1 A partially enlarged schematic diagram of structure B in the middle; Figure 4 This is a schematic diagram of the internal structure of a vertical rotary continuous granulation device as described in this embodiment; Figure 5 for Figure 4 A partially enlarged schematic diagram of the middle structure C; Figure 6 for Figure 4 A partially enlarged schematic diagram of structure D in the middle; Figure 7 This is a schematic diagram of the structure of the stirring shaft in a vertical rotary continuous granulation device described in this embodiment; In the diagram: 1-Reaction vessel, 11-Second heating furnace, 12-Rotating drum, 121-Guide vane, 13-First sprocket, 2-Coating vessel, 3-Coating vessel, 31-First heating furnace body, 32-Coating inner liner, 321-Inlet pipe, 322-Frustum section, 33-Stirring shaft, 331-Stirring blade, 332-Scraper, 333-Drive gear, 4-Screw conveyor mechanism, 5-Bearing mechanism, 51-Roller, 52-Support, 6-Drive mechanism, 61-Chain, 62-Drive motor. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] For this embodiment, please refer to Figures 1-7The specific implementation of this vertical rotary continuous granulation equipment includes a reaction vessel 1, a cooling vessel 2, and a coating vessel 3. A spiral conveying mechanism 4 connects the reaction vessel 1, the cooling vessel 2, and the coating vessel 3. The reaction vessel 1 includes a second heating furnace 11 and a rotary drum 12. The second heating furnace 11 has a cylindrical hollow structure and is fitted onto the surface of the rotary drum 12, with both ends of the rotary drum 12 extending to the outside of the second heating furnace 11. The rotary drum 12 is rotatably mounted on the second heating furnace 11. Inside, both the reaction vessel 1 and the cooling vessel 2 are arranged horizontally along the axis of the rotating drum 12. The coating vessel 3 includes a first heating furnace body 31, a coating inner liner 32, and a stirring shaft 33. The first heating furnace body 31 is a cylindrical hollow structure and is fitted onto the surface of the coating inner liner 32. The stirring shaft 33 is rotatably inserted into the inside of the coating inner liner 32. The coating vessel 3 is arranged vertically along the axis of the stirring shaft 33. The bottom end of the coating inner liner 32 is connected to the reaction vessel 1 through a spiral conveying mechanism 4.

[0018] By adopting a vertical structure for the coating vessel 3, which is set on one side of the reactor, and a screw conveyor 4 is set at the top and bottom of the coating vessel 3, the powder and the agglomerated semi-finished material are conveyed by the screw conveyor 4. During the powder mixing process, the powder can accumulate in the vertically structured coating inner liner 32. Under its own weight, the powder falls evenly inside the coating inner liner 32. On the one hand, the powder is evenly distributed and mixed in the coating inner liner 32. On the other hand, the powder can be squeezed together under its own weight, which improves the fusion between the powder and the binder, allowing the powder to be repeatedly bonded, agglomerated and enlarged, thus improving the granulation quality of the equipment. Furthermore, such as Figure 7 As shown, the stirring shaft 33 has several outwardly protruding stirring blades 331 in the middle. The stirring blades 331 have a fan-shaped structure. Several stirring blades 331 on the same side are arranged in a vertical linear structure. The stirring blades 331 on adjacent sides are arranged in an alternating structure. The stirring blades 331 can form agglomeration areas of different heights in the reactor 1. The powder can be fully stirred and agglomerated in agglomeration areas at different heights. At the same time, the alternating structure of the stirring blades 331 on adjacent sides can facilitate the movement of powder in agglomeration areas at different heights, so that the powder can be repeatedly bonded and agglomerated to become larger.

[0019] Furthermore, such as Figure 6As shown, the top edge of the inner liner 32 is provided with an inlet port 321 for powder feeding. The bottom end of the inner liner 32 is a truncated cone 322. The inner liner 32 is connected to the screw conveyor mechanism 4 through the truncated cone 322. The bottom of the stirring shaft 33 is provided with an outwardly inclined scraper 332. The scraper 332 abuts against the inner wall of the truncated cone 322. The agglomerated powder in this equipment is more thoroughly mixed than the agglomerated powder in the coating kettle 3 of the existing granulation equipment. Therefore, a large pressure will be formed at the bottom of the vertical structure inner liner 32, which may make it difficult for the agglomerated powder to be discharged. Therefore, the outwardly inclined scraper 332 at the bottom of the stirring shaft 33 can continuously scrape the inner wall of the truncated cone 322, so that the agglomerated powder is less likely to stick to the bottom of the truncated cone 322.

[0020] Specifically, such as Figure 5 As shown, the top end of the stirring shaft 33 extends to the outside of the top end of the inner liner 32. The top end of the stirring shaft 33 is provided with a drive gear 333. The stirring shaft 33 is rotatably disposed inside the inner liner 32 via the drive gear 333.

[0021] Specifically, such as Figure 3 As shown, both ends of the rotary drum 12 are provided with a bearing mechanism 5. The bearing mechanism 5 includes a roller 51 and a bracket 52. The roller 51 is horizontally rotatably mounted on the top of the bracket 52, and the bottom of the bracket 52 is fixed on the working plane. The end of the rotary drum 12 rolls against the ground surface of the roller 51.

[0022] Specifically, such as Figure 2 As shown, a drive mechanism 6 is provided at one end of the rotary drum 12. The drive mechanism 6 includes a chain 61 and a drive motor 62. A first sprocket 13 is provided at the end of the rotary drum 12 near the drive mechanism 6. A second sprocket is provided at the output end of the drive motor 62. The chain 61 has a structure with the ends connected. One side of the chain 61 is wrapped around the surface of the first sprocket 13, and the other side of the chain 61 is wrapped around the second sprocket at the output end of the drive motor 62. The drive motor 62 and the rotary drum 12 are connected by the chain 61.

[0023] Preferably, both the second heating furnace 11 and the first heating furnace body 31 are composed of an outer shell, a heat insulation layer, and a heating element (not shown). The heat insulation layer covers the inner wall of the outer shell, and a recessed heat source cavity is provided on the side of the heat insulation layer near the inner liner 32 and the rotating drum 12. The heating element (not shown) is disposed inside the heat source cavity to heat the inner liner 32 and the rotating drum 12. The heat insulation layer is composed of a cotton layer of aluminosilicate fiber, and the heating element is composed of a resistance band. Aluminosilicate fiber is a new type of lightweight and energy-saving refractory material. It is a cotton-like inorganic fiber made by melting fused silica at a high temperature of 2100℃ and then processing it using high-speed centrifugation or blowing methods. Alumina silicate fiber has advantages such as high temperature resistance, good thermal stability, low thermal conductivity, small heat capacity, good resistance to mechanical vibration, small thermal expansion, and good thermal insulation performance. When mixed with cotton layers for weaving or knitting, it can be made into thermal insulation layers such as alumina silicate fiber boards, alumina silicate fiber felts, alumina silicate fiber ropes, and alumina silicate fiber blankets. It effectively retains the heat of the heating element on the surface of the inner liner 32 and the rotating drum 12, so that the inner liner 32 and the rotating drum 12 can continuously obtain heat for heating.

[0024] The working process of a vertical rotary continuous granulation equipment: Powder is fed into the spiral conveyor 4 at the top of the coating vessel 3 and into the feed inlet 321 at the top of the inner liner 32. The powder can form agglomeration areas of different heights in the inner liner 32 through the stirring blades 331. The powder can be fully stirred and agglomerated in the agglomeration areas at different heights. At the same time, the staggered structure of the stirring blades 331 on adjacent sides can facilitate the movement of powder in agglomeration areas at different heights, so that the powder can be repeatedly agglomerated and agglomerated to become larger. The agglomerated powder is then conveyed into the rotary drum 12 inside the reactor 1 by the spiral conveyor 4 at the bottom of the reactor 3. The rotary drum 12 is then rotated and heated by the second heating furnace 11, so that the agglomerated powder is continuously stirred and mixed in the rotary drum 12 and moves towards the cooling reactor 2 under the action of the guide vanes 121. Finally, the agglomerated powder after reaction and drying can be formed into granular material in the rotary drum 12, and then transported and cooled into the cooling kettle 2 by the screw conveyor mechanism 4.

[0025] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A vertical rotary continuous granulation apparatus, characterized by: It includes a coating vessel, a reaction vessel, and a cooling vessel, all connected by a spiral conveyor mechanism. The coating vessel includes a first heating furnace body, a coating inner liner, and a stirring shaft. The first heating furnace body is a cylindrical hollow structure and is sleeved on the surface of the coating inner liner. The stirring shaft is rotatably inserted into the inside of the coating inner liner. The coating vessel is arranged in a vertical structure along the axis of the stirring shaft. The bottom end of the coating inner liner is connected to the reaction vessel through a spiral conveying mechanism. The reaction vessel includes a second heating furnace and a rotary drum. The second heating furnace is a cylindrical hollow structure. The second heating furnace is sleeved on the surface of the rotary drum, and both ends of the rotary drum extend to the outside of the second heating furnace. The rotary drum is rotatably arranged inside the second heating furnace. Both the reaction vessel and the cooling vessel are arranged in a horizontal structure along the axis of the rotary drum.

2. A vertical rotary continuous granulation apparatus according to claim 1, characterized in that: The top end of the stirring shaft extends to the outside of the top end of the inner liner, and a drive gear is provided at the top end of the stirring shaft. The stirring shaft is rotatably disposed inside the inner liner via the drive gear.

3. A vertical rotary continuous granulation apparatus according to claim 1, wherein: The stirring shaft has several outwardly protruding stirring blades in the middle. The stirring blades are fan-shaped. Several stirring blades on the same side are arranged in a vertical linear structure, while the stirring blades on adjacent sides are arranged in an alternating structure.

4. A vertical rotary continuous granulation apparatus according to claim 1, wherein: The top edge of the inner liner is provided with an inlet for powder feeding. The bottom of the inner liner is a truncated cone. The inner liner is connected to the screw conveyor mechanism through the truncated cone. The bottom of the stirring shaft is provided with an outwardly inclined scraper, which abuts against the inner wall of the truncated cone.

5. A vertical rotary continuous granulation apparatus according to claim 1, wherein: Both ends of the rotary drum are provided with a bearing mechanism, which includes a roller and a bracket. The roller is horizontally rotatably mounted on the top of the bracket, and the bottom of the bracket is fixed on the working plane. The end of the rotary drum rolls into contact with the surface of the roller.

6. A vertical rotary continuous granulation device according to claim 5, characterized in that: One end of the rotary drum is provided with a drive mechanism, which includes a chain and a drive motor. The end of the rotary drum near the drive mechanism is provided with a first sprocket, and the output end of the drive motor is provided with a second sprocket. The chain has a structure where the ends are connected. One side of the chain is wrapped around the surface of the first sprocket, and the other side of the chain is wrapped around the second sprocket at the output end of the drive motor. The drive motor and the rotary drum are connected by a chain for transmission.

7. A vertical rotary continuous granulation apparatus according to any one of claims 1 to 6, characterized in that: Both the first and second heating furnaces are composed of an outer shell, a heat insulation layer, and a heating element. The heat insulation layer covers the inner wall of the outer shell, and the side of the heat insulation layer near the inner liner and the rotating drum has an inwardly recessed heat source cavity. The heating element is located inside the heat source cavity to heat the inner liner and the rotating drum.

8. A vertical rotary continuous granulation apparatus according to claim 7, wherein: The heat insulation layer is composed of a cotton layer made of aluminum silicate fiber, and the heating element is composed of a resistance band.

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