Granulation device

Abstract

The invention belongs to the technical field of chemical equipment, and particularly relates to a granulation device which comprises a rack assembly, a driving assembly, a supporting assembly, a stator assembly and a rotary drum assembly, and the driving assembly, the supporting assembly, the stator assembly and the rotary drum assembly are installed on the rack assembly. The driving assembly is connected to one end of the drum assembly and used for driving the drum assembly to rotate, the supporting assembly is connected to the other end of the drum assembly, the stator assembly is sleeved with the drum assembly and used for throwing out slurry discharged by the stator assembly to form particles, and the drum assembly is rotationally connected with the supporting assembly. The end, close to the supporting assembly, of the stator assembly is rotationally connected with the drum assembly. According to the granulation device provided by the invention, the connection relation between the rotary drum assembly and the supporting assembly is redesigned in the overall structure, and the supporting mode is transferred from inside to outside, so that the long-standing problem of material leakage is solved, the equipment maintenance frequency is remarkably reduced, the damage risk caused by material leakage is avoided, and meanwhile, the operation safety is improved.

Description

Technical Field

[0001] This application belongs to the field of chemical equipment, and more specifically, relates to a granulation device. Background Technology

[0002] In the field of compound fertilizer production, steel strip granulation technology is an important granulation process with advantages such as uniform granulation, high particle strength, and high production efficiency. Its working principle is as follows: high-temperature, high-viscosity compound fertilizer slurry enters the stator through the slurry channel distribution holes, and then the centrifugal force generated by the rotation of the outer rotating drum assembly throws the slurry out, forming droplets that fall onto the running steel strip. Finally, the granulation process is completed after cooling and demolding.

[0003] In traditional structures, the outer rotating drum assembly is driven by a motor-reducer-sprocket transmission system, with the tail end supported and positioned by a stator support. Since the stator is fixed while the outer rotating drum assembly rotates, the support uses a dynamic-static ring friction seal structure. Due to the high temperature, high viscosity, and strong corrosiveness of the compound fertilizer slurry, coupled with frequent steam purging, the dynamic-static ring sealing surfaces wear down rapidly and fail, leading to material leakage in the granulation equipment. This causes frequent misalignment and even tearing of the steel belt, and the leaked high-temperature slurry also poses safety risks. Summary of the Invention

[0004] The purpose of this application is to provide a granulation device to solve the problem of material leakage caused by poor lifespan of the sealing structure in the prior art.

[0005] To achieve the above objectives, the technical solution adopted in this application embodiment is as follows: a granulation apparatus is provided, including a frame assembly, a drive assembly, a support assembly, a stator assembly, and a rotary drum assembly mounted on the frame assembly. The stator assembly has a channel for feeding slurry. The drive assembly is connected to one end of the rotary drum assembly and is used to drive the rotary drum assembly to rotate. The support assembly is connected to the other end of the rotary drum assembly. The rotary drum assembly is sleeved on the stator assembly and is used to throw out the slurry discharged from the stator assembly to form granules. The rotary drum assembly is rotatably connected to the support assembly, and the end of the stator assembly near the support assembly is rotatably connected to the rotary drum assembly.

[0006] Optionally, the support assembly includes a bearing, the inner side of which is connected to the rotating drum assembly.

[0007] Optionally, the support assembly further includes a bushing and a bearing outer sleeve, the bushing being disposed between the inner side of the bearing and the rotating drum assembly, and the bearing outer sleeve being connected to the outer side of the bearing.

[0008] Optionally, the support assembly further includes a bearing positioning sleeve fitted onto the outside of the bushing, the inside of the bushing being connected to the rotating cylinder assembly, and the outside of the bushing being provided with a positioning part for positioning the bearing, one side of the bearing abutting against the positioning part, and the other side of the bearing abutting against the bearing positioning sleeve.

[0009] Optionally, the support assembly further includes a first cover and a second cover for fixing the bearing, the first cover and the second cover being respectively disposed on opposite sides of the bearing, and both the first cover and the second cover being connected to the bearing outer sleeve.

[0010] Optionally, the support assembly further includes a retaining ring and a cover plate. The retaining ring is sleeved on the outside of the bearing positioning sleeve and abuts against the second pressure cap. The cover plate abuts against the other side of the retaining ring and is connected to the bearing outer sleeve and the second pressure cap.

[0011] Optionally, the stator assembly includes a stator and a stator end cap, the stator end cap being connected to the stator and used to block the channel.

[0012] Optionally, a positioning and rotating structure is formed between the side of the stator end cover away from the stator and the rotary drum assembly.

[0013] Optionally, the rotary drum assembly includes a rotary drum, a rotary drum pressure plate connected to the end of the rotary drum, and a positioning sleeve connected to the rotary drum pressure plate facing the stator side. The positioning rotation structure includes the positioning sleeve and a positioning protrusion located on the stator end cover. The positioning protrusion extends into the positioning sleeve and is used to rotate relative to the positioning sleeve.

[0014] Optionally, the diameter of the stator assembly on the side closer to the support assembly is larger than the diameter at the center of the stator assembly, and / or the diameter of the stator assembly on the side closer to the drive assembly is larger than the diameter at the center of the stator assembly.

[0015] The granulation apparatus provided in this application has at least the following beneficial effects: Compared with the prior art, the granulation apparatus provided in this application, by connecting the support assembly to the other end of the rotating drum assembly, allows the rotating drum assembly and the support assembly to be directly rotatably connected, and allows the stator assembly to form a rotatable connection with the rotating drum assembly at the end close to the support assembly. This fundamentally changes the structural design of traditional granulation apparatuses, transferring the support point from the fixed component to the rotating component (i.e., the rotating drum assembly), keeping the support assembly away from the highly corrosive slurry environment, and eliminating the sealing failure problem caused by high temperature, high viscosity, and highly corrosive working conditions in traditional dynamic and static ring sealing structures. The design of the rotating drum assembly sleeved on the stator assembly not only optimizes the slurry distribution and ejection process, but its fully enclosed structure also effectively prevents the risk of slurry leakage from the tail end. By redesigning the connection between the rotating drum assembly and the support assembly, the overall structure shifts the support method from the inside to the outside, achieving physical isolation between the support structure and the corrosive slurry. This not only solves the long-standing problem of material leakage but also significantly reduces the frequency of equipment maintenance, avoids the risk of steel belt misalignment and damage caused by material leakage, and improves operational safety, providing a reliable guarantee for continuous and stable production. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the granulation apparatus provided in the embodiments of this application; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a schematic diagram of the support components used in the embodiments of this application; Figure 4 This is a schematic diagram of the rotating drum assembly used in the embodiments of this application; Figure 5 for Figure 4 A magnified view of a section at point B in the middle; Figure 6 A schematic diagram of the stator assembly used in the embodiments of this application. Figure 1 ; Figure 7 for Figure 6 A magnified view of a section at point C; Figure 8 A schematic diagram of the stator assembly used in the embodiments of this application. Figure 2 ; Figure 9 for Figure 8 A magnified view of a section at point D.

[0018] The following are the labeling elements in the figure: 10. Drive assembly; 11. Motor components; 111. Motor; 112. Reducer; 12. Transmission components; 121. Transmission sprocket; 122. Transmission support; 20. Support assembly; 21. Bearing; 22. Bushing; 221. Positioning part; 23. Bearing outer sleeve; 24. Bearing positioning sleeve; 251. First pressure cover; 252. Second pressure cover; 253. Limiting protrusion; 26. Retaining ring; 27. Cover plate; 271. Handle; 30. Stator assembly; 31. Stator; 32. Stator end cap; 321. Positioning protrusion; 33. Channel; 331. Slurry channel; 332. Insulation channel; 333. Distribution hole; 34. Screw plug assembly; 341. First bolt; 342. Second bolt; 35. Feeder; 351. Feeding space; 352. Feeding hole; 40. Rotary drum assembly; 41. Rotary drum; 411. Discharge hole; 42. Rotary drum pressure plate; 43. Positioning sleeve; 50. Rack assembly; 60. Steel strip assembly. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0020] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0021] It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] The various specific technical features and embodiments described in the detailed implementation can be combined in any suitable manner without contradiction. For example, different implementation methods can be formed by combining different specific technical features / implementations / implementation methods. In order to avoid unnecessary repetition, the various possible combinations of the various specific technical features / implementations / implementation methods in this application will not be described separately.

[0023] Please refer to this as well. Figures 1 to 9 This application provides a granulation apparatus, which includes a frame assembly 50, a drive assembly 10, a support assembly 20, a stator assembly 30, and a rotary drum assembly 40. The drive assembly 10, support assembly 20, stator assembly 30, and rotary drum assembly 40 are mounted on the frame assembly 50. The drive assembly 10 is connected to one end of the rotary drum assembly 40 and is used to drive the rotary drum assembly 40 to rotate. The support assembly 20 is connected to the other end of the rotary drum assembly 40. The stator assembly 30 has a channel 33 through which slurry enters and exits the stator assembly 30. The rotary drum assembly 40 is sleeved on the stator assembly 30 and is rotatably connected to the support assembly 20. The end of the stator assembly 30 closest to the support assembly 20 is rotatably connected to the rotary drum assembly 40.

[0024] In practical applications, the rotary drum assembly 40 rotates under the drive of the drive assembly 10. The slurry discharged from the stator assembly 30 comes into contact with the rotary drum assembly 40 and is thrown out by the rotating assembly 40. The thrown-out slurry forms granules after cooling. This design, by connecting the support assembly 20 to the other end of the rotary drum assembly 40, allows the rotary drum assembly 40 and the support assembly 20 to be directly rotatably connected, and allows the end of the stator assembly 30 close to the support assembly 20 to form a rotatable connection with the rotary drum assembly 40. This fundamentally changes the structural design of traditional granulation devices, transferring the support point from the fixed component to the rotating component (i.e., the rotary drum assembly 40). This keeps the support assembly 20 away from the highly corrosive slurry environment, eliminating the sealing failure problem caused by high temperature, high viscosity, and highly corrosive conditions in traditional dynamic and static ring sealing structures. The design of the rotary drum assembly 40 sleeved on the stator assembly 30 not only optimizes the slurry distribution and throwing process, but its fully enclosed structure also effectively prevents the risk of slurry leakage from the tail end. By redesigning the connection between the rotating drum assembly 40 and the support assembly 20, the overall structure shifts the support method from the inside to the outside, achieving physical isolation between the support structure and the corrosive slurry. This not only solves the long-standing problem of material leakage but also significantly reduces the frequency of equipment maintenance, avoids the risk of steel belt misalignment and damage caused by material leakage, and improves operational safety, providing a reliable guarantee for continuous and stable production.

[0025] As one of the optional implementation methods in this embodiment, please refer to Figure 2 and Figure 3 The support assembly 20 includes a bearing 21, the inner side of which is connected to the rotating drum assembly 40. Thus, the support assembly 20 is connected to the rotatable rotating drum assembly 40 by the bearing 21 of the support assembly 20. The rotating drum assembly 40 can rotate relative to the support assembly 20. Compared with the design of connecting the stator and the support assembly 20 in the prior art, this embodiment avoids direct contact support between the support assembly 20 and the stator assembly 30, and avoids the support assembly 20 being corroded by the slurry, which would affect its service life. It can ensure that the equipment maintenance cost is reduced under the premise that the stator assembly 30 is used normally.

[0026] Furthermore, as an optional implementation of this embodiment, the support assembly 20 also includes a bushing 22 and a bearing outer sleeve 23. The bushing 22 is disposed between the inner side of the bearing 21 and the rotating drum assembly 40, and the bearing outer sleeve 23 is connected to the outer side of the bearing 21. The bushing 22 bears the radial load when the rotating drum assembly 40 rotates, preventing wear caused by direct contact between the bearing 21 and the rotating drum assembly 40, thus making the connection between the bearing 21 and the rotating drum assembly 40 more reliable and stable. The bearing outer sleeve 23 disposed on the outer side of the bearing 21 can cooperate with other components of the support assembly 20 to protect the bearing 21 and improve the reliability of the bearing 21.

[0027] Furthermore, as an optional embodiment of this invention, the support assembly 20 further includes a bearing positioning sleeve 24 fitted onto the outside of the bushing 22. The inner side of the bushing 22 is connected to the rotating drum assembly 40, and a positioning part 221 for positioning the bearing 21 is provided on the outer side of the bushing 22. One side of the bearing 21 abuts against the positioning part 221, and the other side of the bearing 21 abuts against the bearing positioning sleeve 24. The positioning and assembly of the bearing 21 is achieved by using the bearing positioning sleeve 24 and the positioning part 221 on the outer side of the bushing 22, which is beneficial for the installation of the bearing 21. At the same time, under the limitation of the positioning part 221 and the bearing positioning sleeve 24, the inner side of the bearing 21 can stabilize the position of the bearing 21 during the rotation of the rotating drum assembly 40, preventing the bearing 21 from shifting.

[0028] Specifically, the positioning part 221 on the outer side of the bushing 22 can be a positioning protrusion. The positioning protrusion cooperates with the bearing positioning sleeve 24 sleeved on the outer side of the bushing 22 to clamp on both sides of the bearing 21, so as to realize the positioning and installation of the bearing 21 and prevent the bearing 21 from shifting during use.

[0029] Of course, in other embodiments, the positioning part 221 can be a positioning groove provided on the outside of the bushing 22.

[0030] Furthermore, as one of the optional implementation methods of this embodiment, please continue to refer to... Figure 2 and Figure 3 The support assembly 20 also includes a first cover 251 and a second cover 252 for fixing the bearing 21. The first cover 251 and the second cover 252 are respectively disposed on opposite sides of the bearing 21, and both the first cover 251 and the second cover 252 are connected to the bearing outer sleeve 23. In this way, through the cooperation of the first cover 251, the second cover 252 and the bearing outer sleeve 23, a protective structure is formed on the outside of the bearing 21, which confines the bearing 21 in the protective structure.

[0031] Specifically, the first cover 251 and the second cover 252 can be connected to the bearing sleeve 23 by bolts. The first cover 251 and the second cover 252 are provided with a limiting protrusion 253 on the side facing the bearing 21. The two limiting protrusions 253 respectively abut against the outer side of the bearing 21 and cooperate with the positioning part 221 on the outer side of the bushing 22 to limit the bearing 21.

[0032] Furthermore, as an optional implementation of this embodiment, the support assembly 20 also includes a fixing ring 26 and a cover plate 27. The fixing ring 26 is sleeved on the outside of the bearing positioning sleeve 24 and abuts against the second pressure cover 252. The cover plate 27 abuts against the other side of the fixing ring 26 and is connected to the bearing outer sleeve 23 and the second pressure cover 252. Thus, through the cooperation of the cover plate 27, the fixing ring 26, the bearing outer sleeve 23, the first pressure cover 251 and the second pressure cover 252, a more complete bearing 21 limiting and protection structure is formed. On the one hand, this structure restricts the displacement of the bearing 21 and improves the reliability of the bearing 21. On the other hand, it plays a protective role for the bearing 21 and ensures that the bearing 21 can remain stable during operation.

[0033] Furthermore, as one of the optional implementations of this embodiment, the support component 20 also includes a handle 271, which is connected to the cover plate 27. During maintenance, the handle 271 can facilitate the disassembly and retrieval of the support component.

[0034] As one of the optional implementation methods in this embodiment, please refer to Figures 6 to 9 The stator assembly 30 includes a stator 31 and a stator end cover 32. The stator end cover 32 is connected to the stator 31 and is used to block the channel 33. By using the stator end cover 32 to block one end of the channel 33, the slurry is prevented from leaking from the end of the stator 31 and contacting the support assembly 20, which effectively improves the service life of the support assembly 20.

[0035] Specifically, the stator 31 can be a long cylindrical structure, and the channel 33 can penetrate the stator 31. The slurry can enter the stator 31 through the channel 33 near the end of the drive assembly 10. The stator end cap 32 is connected to the end of the stator 31 near the support assembly 20. The stator end cap 32 can be connected to the stator 31 through a screw plug component 34 to block the channel 33. Specifically, the screw plug component 34 includes a first bolt 341 and a second bolt 342. The first bolt 341 is connected to the channel 33 and blocks the channel 33. The second bolt 342 passes through the stator end cap 32 and is connected to the first bolt 341, thereby realizing the installation and fixation of the stator end cap 32 and the blocking of the channel 33.

[0036] Furthermore, as one of the optional embodiments of this application, the channel 33 may include a slurry channel 331 and a heat preservation channel 332. The slurry can enter the stator 31 through the slurry channel 331, and the heat preservation channel 332 is used to introduce a heat preservation medium. The heat preservation channel 332 can be arranged on both sides of the slurry channel 331. The heat preservation medium is used to keep the slurry in the slurry channel 331 warm, control the temperature of the slurry in the slurry channel 331, and keep the slurry at the optimal temperature.

[0037] Specifically, as one of the optional implementation methods of this application, please refer to Figure 8 and Figure 9 The stator assembly 30 also includes a feeder 35, which is connected to the stator 31. A feeding space 351 is formed between the feeder 35 and the stator 31. The slurry channel 331 is connected to the feeding space 351 through a distribution hole 333, allowing the slurry channel 331 to enter the feeding space 351 through the distribution hole 333. The feeder 35 is provided with multiple feeding holes 352. The slurry in the feeding space 351 enters the rotary drum assembly 40 through the feeding holes 352 and is thrown out by the rotation of the rotary drum assembly 40 to form particles. In this way, by utilizing the design of the feeder 35, the slurry pressure and gravity can be used to allow the slurry to enter the rotary drum assembly 40 at a specific speed to form particles.

[0038] Specifically, the material distribution space 351 can be set along the length of the distributor, and the material distribution space 351 can be parallel to the slurry channel 331. The length of the distribution channel 33 is less than that of the slurry channel 331. The number and size of the distribution holes 333 and the material distribution holes 352 can be different. The number of distribution holes 333 is less than that of the material distribution holes 352, and the size of the distribution holes 333 is larger than that of the material distribution holes 352. This design allows the slurry to enter the material distribution space 351 more smoothly. At the same time, because the number of material distribution holes 352 is greater and the size is smaller, the slurry entering the rotary drum assembly 40 can be more uniform.

[0039] In practical applications, the feeder 35 can be detachably connected to the stator 31. Depending on the type of slurry used, a suitable feeder 35 can be selected and installed on the stator 31 to achieve modular design and improve the practicality of the granulation device.

[0040] Furthermore, as one optional implementation method of this embodiment, please refer to... Figure 2 , Figure 5 and Figure 7 A positioning and rotating structure is formed between the side of the stator end cover 32 away from the stator 31 and the rotating drum assembly 40. The positioning and rotating structure realizes the positioning and rotation of the stator assembly 30 and the rotating drum assembly 40, which facilitates the positioning and installation of the rotating drum assembly 40 and the stator assembly 30. At the same time, the relative rotation of the stator assembly 30 and the rotating drum assembly 40 avoids direct contact between the stator assembly 30 and the support assembly 20, so that the support assembly 20 is not affected by the slurry and effectively extends the service life of the support assembly 20.

[0041] Specifically, as one of the optional implementation methods in this embodiment, please continue to refer to... Figure 2 , Figure 5 and Figure 7The rotary drum assembly 40 includes a rotary drum 41, a rotary drum pressure plate 42, and a positioning sleeve 43. The rotary drum pressure plate 42 is connected to the end of the rotary drum 41, and the positioning sleeve 43 is connected to the side of the rotary drum pressure plate 42 facing the stator 31. The positioning and rotating structure includes the positioning sleeve 43 and a positioning protrusion 321 located on the stator end cover 32. The positioning protrusion 321 extends into the positioning sleeve 43 and can rotate relative to the positioning sleeve 43. This design, utilizing the cooperation of the positioning protrusion 321 and the positioning sleeve 43, enables relative rotation between the rotary drum assembly 40 and the positioning assembly, eliminating the problem of slurry corrosion caused by direct contact between the stator assembly and the support assembly in the prior art, and effectively extending the service life of the positioning assembly. On the other hand, since the rotary drum assembly 40 and the stator assembly 30 rotate and rub against each other for a long time, only the positioning sleeve 43 on the rotary drum pressure plate 42 needs to be replaced during equipment maintenance, which can effectively reduce the maintenance cost of the granulation equipment.

[0042] In specific applications, the positioning sleeve 43 can be a copper sleeve, and the positioning protrusion 321 and the positioning sleeve 43 can be in clearance fit. The clearance between the positioning protrusion 321 and the positioning sleeve 43 can be 0.3mm, and the clearance between the end face of the positioning protrusion 321 and the rotating pressure plate can be 2mm. In this way, such a design can facilitate the installation of the positioning protrusion 321 and the positioning sleeve 43, and also allow the two to rotate relative to each other.

[0043] In specific applications, the rotating drum 41 can be a long cylindrical structure, which is sleeved on the outside of the stator assembly 30 and can rotate relative to the stator assembly 30. The rotating drum 41 is provided with multiple throwing holes 411 for throwing out the slurry, which is then cooled to form granules.

[0044] As one of the optional implementation methods in this embodiment, please refer to Figure 6 and Figure 8 The diameter of the stator assembly 30 on the side closer to the support assembly 20 is larger than the diameter at the middle position of the stator assembly 30, so that the stator assembly 30 forms a stepped structure on the side closer to the support assembly 20.

[0045] As one of the optional implementations of this embodiment, the diameter of the stator assembly 30 on the side closer to the drive assembly 10 is larger than the diameter of the middle position of the stator assembly 30, so that the stator assembly 30 forms a stepped structure on the side closer to the drive assembly 10.

[0046] The stepped structure design on both sides of the stator assembly 30 can limit the flow of slurry discharged from the stator assembly 30 towards the support assembly 20 and the drive assembly 10 to a certain extent, thereby improving the utilization rate of the slurry and preventing the slurry from affecting the relative rotation of the stator assembly 30 and the rotary drum assembly 40.

[0047] As one of the optional implementation methods in this embodiment, please refer to Figure 1The drive assembly 10 includes a motor component 11 and a transmission component 12. The transmission component 12 is connected to the motor component 11 and the rotating drum assembly 40 and is used to transmit the power of the motor component 11 to the rotating drum assembly 40 so as to cause the rotating drum assembly 40 to rotate.

[0048] Specifically, the motor component 11 includes a motor 111 and a reducer 112. The reducer 112 is connected to the drive shaft of the motor 111, amplifying the torque of the motor 111 and transmitting it to the transmission component 12.

[0049] Specifically, the transmission component 12 includes a transmission sprocket 121 and a transmission support 122. The transmission sprocket 121 is connected to the transmission shaft of the reducer 112 and transmits power to the transmission support 122. The transmission support 122 is connected to the rotating drum assembly 40, thereby driving the rotating drum assembly 40 to rotate.

[0050] Furthermore, the transmission support 122 includes a support housing and a transmission bearing. The transmission bearing is installed inside the support housing, and the outer side of the transmission bearing is fixedly connected to the support housing. The specific fixing structure and method can be referred to the bearing 21 in the aforementioned embodiment, and will not be repeated here. The inner side of the transmission bearing is connected to the rotating drum assembly 40.

[0051] As one of the optional implementation methods in this embodiment, please refer to Figure 1 The granulation device also includes a steel belt assembly 60. The steel belt assembly 60, drive assembly 10, support assembly 20, stator assembly 30 and rotary drum assembly 40 can be mounted on the frame assembly 50. The frame assembly 50 is used to fix and coordinate the various functional components.

[0052] The granulation apparatus provided in this application fundamentally changes the structural design of traditional granulation apparatuses by connecting the support assembly 20 to the other end of the rotating drum assembly 40, allowing the rotating drum assembly 40 to be directly rotatably connected to the support assembly 20, and allowing the stator assembly 30 to be rotatably connected to the rotating drum assembly 40 at the end close to the support assembly 20. This transfers the support point from the fixed component to the rotating component (i.e., the rotating drum assembly 40), keeping the support assembly 20 away from the highly corrosive slurry environment and eliminating the sealing failure problem caused by high temperature, high viscosity, and highly corrosive conditions in traditional dynamic and static ring sealing structures. The design of the rotating drum assembly 40 sleeved on the stator assembly 30 not only optimizes the slurry distribution and ejection process, but its fully enclosed structure also effectively prevents the risk of slurry leakage from the tail end.

[0053] By redesigning the connection between the rotating drum assembly 40 and the support assembly 20, the overall structure shifts the support method from the inside to the outside, achieving physical isolation between the support structure and the corrosive slurry. This not only solves the long-standing problem of material leakage but also significantly reduces the frequency of equipment maintenance, avoids the risk of steel belt misalignment and damage caused by material leakage, and improves operational safety, providing a reliable guarantee for continuous and stable production.

[0054] Based on the applicant's production line producing 10,000 tons of compound fertilizer annually, the granulation device in this embodiment, compared to existing granulation devices, suffers from material leakage of approximately 5 tons per year. This embodiment solves the material leakage problem, saving 15,000 yuan in leakage costs annually. The granulation device also saves approximately 12,000 yuan in maintenance costs and 40,000 yuan in damage and repair costs for the steel belt assembly, totaling 31,000 yuan. The cost-effectiveness, safety improvements, and stable production line operation brought about by this embodiment are all effects that existing technologies cannot achieve.

[0055] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A granulation apparatus, characterized in that, The device includes a frame assembly (50), a drive assembly (10), a support assembly (20), a stator assembly (30), and a rotary drum assembly (40) mounted on the frame assembly (50). The stator assembly (30) has a channel (33) for feeding slurry. The drive assembly (10) is connected to one end of the rotary drum assembly (40) and is used to drive the rotary drum assembly (40) to rotate. The support assembly (20) is connected to the other end of the rotary drum assembly (40). The rotary drum assembly (40) is sleeved on the stator assembly (30) and is used to throw out the slurry discharged from the stator assembly (30) to form particles. The rotary drum assembly (40) is rotatably connected to the support assembly (20). The end of the stator assembly (30) near the support assembly (20) is rotatably connected to the rotary drum assembly (40).

2. The granulation apparatus as described in claim 1, characterized in that, The support assembly (20) includes a bearing (21), the inner side of which is connected to the rotating drum assembly (40).

3. The granulation apparatus as described in claim 2, characterized in that, The support assembly (20) also includes a bushing (22) and a bearing sleeve (23). The bushing (22) is disposed between the inner side of the bearing (21) and the rotating drum assembly (40), and the bearing sleeve (23) is connected to the outer side of the bearing (21).

4. The granulation apparatus as described in claim 3, characterized in that, The support assembly (20) further includes a bearing positioning sleeve (24) sleeved on the outside of the bushing (22). The inner side of the bushing (22) is connected to the rotating drum assembly (40). The outer side of the bushing (22) is provided with a positioning part (221) for positioning the bearing (21). One side of the bearing (21) abuts against the positioning part (221), and the other side of the bearing (21) abuts against the bearing positioning sleeve (24).

5. The granulation apparatus as described in claim 4, characterized in that, The support assembly (20) further includes a first cover (251) and a second cover (252) for fixing the bearing (21). The first cover (251) and the second cover (252) are respectively disposed on opposite sides of the bearing (21), and both the first cover (251) and the second cover (252) are connected to the bearing outer sleeve (23).

6. The granulation apparatus as described in claim 5, characterized in that, The support assembly (20) further includes a retaining ring (26) and a cover plate (27). The retaining ring (26) is sleeved on the outside of the bearing positioning sleeve (24) and abuts against the second pressure cover (252). The cover plate (27) abuts against the other side of the retaining ring (26) and is connected to the bearing outer sleeve (23) and the second pressure cover (252).

7. The granulation apparatus according to any one of claims 1 to 6, characterized in that, The stator assembly (30) includes a stator (31) and a stator end cap (32), the stator end cap (32) being connected to the stator (31) and used to block the channel (33).

8. The granulation apparatus as described in claim 7, characterized in that, A positioning and rotating structure is formed between the side of the stator end cover (32) facing away from the stator (31) and the rotary drum assembly (40).

9. The granulation apparatus as described in claim 8, characterized in that, The rotary drum assembly (40) includes a rotary drum (41), a rotary drum pressure plate (42) connected to the end of the rotary drum (41), and a positioning sleeve (43) connected to the rotary drum pressure plate (42) facing the stator (31). The positioning rotation structure includes the positioning sleeve (43) and a positioning protrusion (321) located on the stator end cover (32). The positioning protrusion (321) extends into the positioning sleeve (43) and is used to rotate relative to the positioning sleeve (43).

10. The granulation apparatus according to any one of claims 1 to 6, characterized in that, The diameter of the stator assembly (30) on the side closer to the support assembly (20) is greater than the diameter at the center of the stator assembly (30), and / or the diameter of the stator assembly (30) on the side closer to the drive assembly (10) is greater than the diameter at the center of the stator assembly (30).

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