A drum-type fly ash pelletizing device based on segmented dynamic regulation

Abstract

The application provides a drum-type fly ash granulating device based on segmented dynamic regulation, which comprises a drum assembly and a regulation and control unit; the drum assembly is a multi-segment split structure and comprises at least a forming drum and a compacting drum arranged adjacently; the granulating device further comprises a first driving assembly arranged at the bottom of the forming drum and a second driving assembly arranged at the bottom of the compacting drum, and the first driving assembly and the second driving assembly are configured to be capable of independently adjusting the rotating speed. At least two levels of porous extrusion plates are arranged in the compacting drum, and a spacing adjustment mechanism connected with each porous extrusion plate is arranged in the compacting drum; a plurality of extrusion through holes are arranged on each porous extrusion plate, and the porous extrusion plates of different levels are connected through the spacing adjustment mechanism. The regulation and control unit is used for adjusting the rotating speeds of the forming drum and the compacting drum respectively based on the target particle size of the set finished product particles; and the regulation and control unit is further used for adjusting the spacing positions of the porous extrusion plates of adjacent levels based on the target particle size of the set finished product particles.

Description

Technical Field

[0001] This invention relates to the field of fly ash granulation equipment technology, and in particular to a drum-type fly ash granulation device based on segmented dynamic control. Background Technology

[0002] Fly ash, also known as fly ash or soot, is a fine solid particulate matter in the flue gas produced by fuel combustion, with a particle size generally between 1 and 100 μm. Burning one ton of coal produces approximately 250 to 300 kg of fly ash. Large quantities of fly ash, if left uncontrolled or untreated, can cause air pollution, accumulate in waterways, and its chemical components can harm organisms and humans.

[0003] To facilitate the recycling and storage of fly ash, granulation equipment is generally used to process powdered fly ash into granular shapes for easier processing and transportation. Although existing fly ash granulation devices can achieve basic granulation functions, they still face several technical challenges.

[0004] 1. The finished particles have a single size. Traditional drum granulation equipment usually adopts an integrated drum structure, a single rotation speed, and a fixed internal structure (such as fixed lifting plates), which makes the intensity and duration of the process that the powder undergoes in the drum relatively fixed. The agglomeration, growth, and densification process of the powder can only be carried out in a preset mode or a set of parameters, resulting in a narrow range of particle sizes in the final finished particles, making it difficult to flexibly produce multiple specifications of finished particles on the same equipment.

[0005] 2. Particle size control is difficult. Traditional drum-type granulation equipment often adjusts particle size by simply adjusting a single parameter of the drum (such as rotation speed, tilt angle, etc.). Furthermore, particle size is simultaneously affected by multiple parameters during granulation. The effect of a single parameter on particle size is limited; these parameters have indirect and complex effects on particle size, requiring extensive experience and repeated trial and error, making the debugging process quite difficult. Existing granulation equipment also requires shutdown to replace internal components during adjustment, which is time-consuming, labor-intensive, and impacts production efficiency.

[0006] 3. Poor particle size control precision: Traditional granulation equipment controls particle size holistically and singularly. Setting a single set of operating parameters makes it difficult to accurately control particle size parameters within a specific range. Traditional granulation equipment cannot perform step-by-step particle size control for different granulation processes, resulting in poor precision and flexibility in particle size control.

[0007] The aforementioned technical pain points directly lead to problems such as the single particle size of finished particles, difficulty in particle size control, and poor particle size control accuracy in existing granulation devices, which restrict the large-scale promotion and application of fly ash granulation. Summary of the Invention

[0008] In view of this, embodiments of the present invention provide a drum-type fly ash granulation device based on segmented dynamic control, so as to eliminate or improve one or more defects existing in the prior art.

[0009] The present invention provides a drum-type fly ash granulation device based on segmented dynamic control, the granulation device including a drum assembly and an adjustment and control unit.

[0010] The roller assembly is a multi-segment split structure, including at least a forming roller and a compacting roller arranged adjacent to each other; the forming roller and the compacting roller are arranged coaxially, with the forming roller located upstream of the compacting roller; the granulation device further includes: a first drive assembly disposed at the bottom of the forming roller and a second drive assembly disposed at the bottom of the compacting roller, wherein the first drive assembly and the second drive assembly are configured to independently adjust their rotational speed.

[0011] The compacting roller is equipped with at least two levels of perforated extrusion plates and a spacing adjustment mechanism connected to each perforated extrusion plate. Each perforated extrusion plate has a plurality of extrusion through holes, and the surface structure of a single perforated extrusion plate extends in a direction parallel to the axis of the compacting roller. Different levels of perforated extrusion plates have different axial positions within the compacting roller. The different levels of perforated extrusion plates are connected by the spacing adjustment mechanism so that the spacing between the different levels of perforated extrusion plates can be adjusted by the spacing adjustment mechanism.

[0012] The adjustment control unit is circuitically connected to the first drive assembly and the second drive assembly, respectively, and is used to adjust the rotation speed of the forming roller and the compacting roller based on the set target particle size of the finished product particles; the adjustment control unit is circuitically connected to the spacing adjustment mechanism, and is used to adjust the spacing position of adjacent porous extrusion plates based on the set target particle size of the finished product particles.

[0013] In some embodiments of the present invention, the roller assembly further includes a polishing roller, which is coaxially arranged with the compacting roller and located downstream of the compacting roller. A third driving assembly is provided at the bottom of the polishing roller. A first annular connecting mechanism is provided at the connection position between the forming roller and the compacting roller, and a second annular connecting mechanism is provided at the connection position between the compacting roller and the polishing roller.

[0014] The forming roller is equipped with a tumbling lifting plate and an angle adjustment mechanism for adjusting the tilt angle of the tumbling lifting plate. The polishing roller is equipped with a polishing lifting plate and an arc adjustment mechanism for adjusting the curvature of the polishing lifting plate.

[0015] The adjustment control unit is circuitically connected to the angle adjustment mechanism and is used to adjust the tilt angle of the tumbling lifting plate based on the set target particle size of the finished product particles through the angle adjustment mechanism; the adjustment control unit is circuitically connected to the arc adjustment mechanism and is used to adjust the arc size of the polishing lifting plate based on the set target particle size of the finished product particles through the arc adjustment mechanism.

[0016] In some embodiments of the present invention, the roller assembly has a double-layer structure comprising: an outer protective layer and an inner sealing layer, wherein the internal space of the inner sealing layer is used for the flow and generation of powder particles, and an installation chamber is provided between the outer protective layer and the inner sealing layer.

[0017] In some embodiments of the present invention, a plurality of tumbling lifting plates are provided inside the forming roller; wherein, the plate surface structure of a single tumbling lifting plate extends in a direction parallel to the axis of the forming roller, and the plurality of tumbling lifting plates are evenly arranged along the curved inner wall of the forming roller in the radial direction; the tumbling lifting plates are arranged at an inclination, the inclination direction being configured to be opposite to the tangential direction of the rotational speed of the forming roller, and the inclination angle being configured to be 35°~40°.

[0018] The angle adjustment mechanism is located inside the mounting chamber and includes a linkage rotating ring, a rotation drive mechanism, and a shaft transmission mechanism. The linkage rotating ring is sleeved on the outside of the forming roller and is provided with a telescopic connecting rod for rotatably connecting with the shaft transmission mechanism. The shaft transmission mechanism is mounted on the inner sealing layer, and one side of the shaft transmission mechanism protrudes from the inner surface of the inner sealing layer for fixed connection with the tumbling lifting plate. The other side of the shaft transmission mechanism protrudes from the outside of the inner sealing layer for fixed connection with the telescopic connecting rod.

[0019] The rotation drive mechanism is provided with a telescopic drive mechanism. One end of the telescopic drive mechanism is rotatably connected to a first position of the inner sealing layer via a rotating shaft, and the other end is rotatably connected to a second position of the linkage rotating ring via a rotating shaft. The first position and the second position are configured to be offset from each other in the radial direction of the forming roller. The telescopic drive mechanism is used to drive the linkage rotating ring to rotate relative to the inner sealing layer in order to adjust the tilt angle of the tumbling lifting plate.

[0020] In some embodiments of the present invention, at least two levels of tumbling lifting plates are provided inside the forming roller, and the different levels of tumbling lifting plates have different axial positions inside the forming roller; the tumbling lifting plates are staggered, and the different levels of tumbling lifting plates have different radial positions inside the forming roller.

[0021] In some embodiments of the present invention, the porous extrusion plate is arranged at an angle, the inclination direction is configured to be the same as the tangential direction of the rotational speed of the forming roller, and the inclination angle is configured to be 45°; the spacing between adjacent porous extrusion plates is configured to be 50~100mm; the porous extrusion plates are staggered, and the porous extrusion plates of different levels have different radial positions inside the compacting roller.

[0022] The inner wall of the compacting roller is provided with a plurality of rectangular through holes along the axial direction. The compacting roller is also provided with a linkage sliding ring, which is sleeved on the outer side of the compacting roller. The linkage sliding ring is provided with a connecting block, which is located inside the rectangular through holes. One end of the connecting block is fixedly connected to the porous extrusion plate, and the other end is fixedly connected to the linkage sliding ring. The spacing adjustment mechanism is fixedly installed inside the mounting cavity and is arranged along the axial direction of the compacting roller. It is used to drive the linkage sliding ring to slide and move to adjust the spacing distance between the porous extrusion plates of each stage.

[0023] In some embodiments of the present invention, the polishing lifting plate has a curved arc surface that extends in a direction parallel to the axis of the polishing drum, and the polishing lifting plate is in contact with the curved inner wall of the polishing drum; the polishing lifting plate is configured as a sheet structure and can deform to change its own curvature; the curvature adjustment mechanism is located on the outer side of opposite sides of the polishing lifting plate, one end of which is connected to the polishing lifting plate and the other end is connected to the inner wall of the polishing drum, for adjusting the curvature of the polishing lifting plate by lifting or lowering; the inner side of the polishing lifting plate is provided with a smooth surface structure for contacting and rubbing with powder particles; the radius of curvature of the polishing lifting plate is configured to be 200~300mm.

[0024] In some embodiments of the present invention, the tumbling lifting plate has a wave structure, the groove of the wave structure extends in a direction parallel to the axis of the forming roller; the surface of the tumbling lifting plate is provided with a rough surface structure for contacting the powder particles; the two opening ends of the extrusion through hole are provided with a flared structure.

[0025] In some embodiments of the present invention, the granulation device further includes: a first support assembly disposed at the bottom of the forming roller, a second support assembly disposed at the bottom of the compacting roller, and a third support assembly disposed at the bottom of the polishing roller; wherein, a single support assembly includes at least two support wheel mechanisms, the two support wheel mechanisms being located at opposite ends of the roller axis; at least two rotating support rings are respectively fitted onto the outer walls of the forming roller, the compacting roller, and the polishing roller, the two rotating support rings being located at opposite ends of the roller axis and used to engage with the support wheel mechanisms.

[0026] The outer wall of the forming roller is fitted with a first transmission gear ring for meshing with the first drive component; the outer wall of the compacting roller is fitted with a second transmission gear ring for meshing with the second drive component; and the outer wall of the polishing roller is fitted with a third transmission gear ring for meshing with the third drive component.

[0027] In some embodiments of the present invention, the support wheel mechanism includes at least two support wheel sets and a base. The two support wheel sets are symmetrically arranged and located on both sides of the roller radially. The support wheel sets are rotatably connected to the base through bearings.

[0028] The beneficial effects of the technical solution described in the embodiment of the present invention, which is based on segmented dynamic control of a drum-type fly ash granulation device, include at least the following: the forming drum and the compacting drum in the embodiment of the present invention are configured as multi-segment split structures, and their rotation speeds are independently adjusted by the first drive component and the second drive component. This allows for independent control of the particle size of the wet particles inside the forming drum during the particle forming stage, and independent control of the particle size of the coarse particles inside the compacting drum during the particle compaction stage. This is beneficial to improving the process adaptability and flexibility of the granulation device in particle size control. The compacting drum is equipped with a porous extrusion plate and a spacing adjustment mechanism, which can adjust the compaction and compaction effect of the particles to flexibly adjust the particle size of the coarse particles inside the compacting drum. The adjustment control unit can flexibly control the rotation speed or internal structure of the drum assembly based on the set target particle size of the finished product to adjust the particle size of the finished product. This is beneficial to improving the accuracy and flexibility of particle size control of the finished product, so that the granulation device can manufacture finished products with various particle size specifications.

[0029] Additional advantages, objects, and features of the invention will be set forth in part in the description which follows, and will also become apparent in part to those skilled in the art upon studying the description, or may be learned by practice of the invention. The objects and other advantages of the invention can be realized and obtained by means of the structures specifically pointed out in the specification and drawings.

[0030] Those skilled in the art will understand that the objectives and advantages achievable with this invention are not limited to those specifically described above, and that the above and other objectives achievable with this invention will become clearer from the following detailed description. Attached Figure Description

[0031] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, are not intended to limit the scope of the invention. The components in the drawings are not drawn to scale but are merely illustrative of the principles of the invention. For ease of illustration and description of certain parts of the invention, corresponding portions in the drawings may be enlarged, i.e., may appear larger relative to other components in an exemplary device actually manufactured according to the invention.

[0032] Figure 1 This is a schematic diagram of the overall structure of the granulation device in one embodiment of the present invention.

[0033] Figure 2 This is a schematic diagram of the structure of a roller assembly in one embodiment of the present invention.

[0034] Figure 3 This is a schematic diagram of the radial cross-section of the forming roller in one embodiment of the present invention.

[0035] Figure 4 This is a schematic diagram of the radial cross-section of the forming roller in another embodiment of the present invention.

[0036] Figure 5 This is a schematic diagram of the radial cross-section of a compacting roller in one embodiment of the present invention.

[0037] Figure 6 This is a schematic diagram of the axial cross-section of a compacting roller in one embodiment of the present invention.

[0038] Figure 7 This is a three-dimensional structural diagram of a compacted roller according to an embodiment of the present invention.

[0039] Figure 8 This is a schematic diagram of the radial cross-section of a polishing roller in one embodiment of the present invention.

[0040] Figure 9 This is a three-dimensional structural diagram of a polishing roller according to an embodiment of the present invention.

[0041] Figure 10 This is a schematic diagram of the overall structure of the roller assembly in one embodiment of the present invention.

[0042] Figure label: 1. Roller assembly; 11. Forming roller; 12. Compacting roller; 13. Polishing roller; 111. Tumbling lifting plate; 112. Angle adjustment mechanism; 112-1. Linkage rotating ring; 112-2. Rotation drive mechanism; 112-3. Rotary shaft transmission mechanism; 121. Perforated extrusion plate; 122. Spacing adjustment mechanism; 123. Linkage sliding ring; 123-1. Connecting block; 124. Rectangular through hole; 131. Polishing lifting plate; 132. Curvature adjustment mechanism; 14. First annular connecting mechanism; 15. Second annular connecting mechanism; 161. First transmission gear ring; 162. Second transmission gear ring; 163. Third transmission gear ring; 17. Rotating support ring; 21. First support assembly; 22. Second support assembly; 23. Third support assembly; 31. First drive assembly; 32. Second drive assembly; 33. Third drive assembly. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and descriptions of this invention are used to explain the invention, but are not intended to limit the invention.

[0044] It should also be noted that, in order to avoid obscuring the invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the invention are shown in the accompanying drawings, while other details that are not closely related to the invention are omitted.

[0045] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, element, step, or component, but does not exclude the presence or addition of one or more other features, elements, steps, or components.

[0046] It should also be noted that, unless otherwise specified, the term "connection" in this article can refer not only to a direct connection, but also to an indirect connection involving an intermediary.

[0047] In the following description, embodiments of the invention will be illustrated with reference to the accompanying drawings. In the drawings, the same reference numerals represent the same or similar parts, or the same or similar steps.

[0048] To address the problems of single particle size, difficulty in particle size control, and poor particle size control precision in existing granulation devices, this invention provides a drum-type fly ash granulation device based on segmented dynamic control. In this embodiment, the forming drum and compacting drum are configured as multi-segment split structures, with their rotational speeds independently adjusted by a first drive component and a second drive component. This allows for independent control of the particle size of wet particles inside the forming drum during the forming stage and independently control of the particle size of coarse particles inside the compacting drum during the compaction stage, improving the process adaptability and flexibility of the granulation device in particle size control. The compacting drum is equipped with a porous extrusion plate and a spacing adjustment mechanism, enabling adjustment of the particle compression and compaction effect to flexibly adjust the particle size of coarse particles inside the compacting drum. The adjustment control unit can flexibly adjust the parameters or structure of the drum assembly based on the set target particle size of the finished product, thereby adjusting the particle size of the finished product. This improves the intelligence level of the granulation device, increases production efficiency, and reduces labor costs.

[0049] like Figure 1 As shown, the segmented dynamic control-based drum-type fly ash granulation device (hereinafter referred to as the granulation device) includes a drum assembly 1 and an adjustment and control unit. The drum assembly 1 is a multi-segment split structure, including at least an adjacent forming drum 11 and a compacting drum 12; the forming drum 11 and the compacting drum 12 are coaxially arranged, with the forming drum 11 located upstream of the compacting drum 12. The upstream forming drum 11 corresponds to the particle forming step in the granulation process, used to form the initial nucleus of the particle by mixing fly ash powder with a binder and then agglomerating it, and the surface of the initial nucleus grows into wet particles through the aggregation and adsorption of fly ash powder. The compacting drum 12 corresponds to the particle compaction step in the granulation process, used to compress and compact the structure of the wet particles into coarse particles with a relatively stable shape and structure.

[0050] Furthermore, the granulation device further includes: a first drive assembly 31 disposed at the bottom of the forming roller 11 and a second drive assembly 32 disposed at the bottom of the compacting roller 12, wherein the first drive assembly 31 and the second drive assembly 32 are configured to independently adjust their rotational speeds. The drive assemblies can be driven by a speed-regulating motor or a drive motor, and are used to achieve differential speed connection between the forming roller 11 and the compacting roller 12 by adjusting the output rotational speeds of the first drive assembly 31 and the second drive assembly 32, so as to independently adjust the particle size of the wet particles inside the forming roller 11 and the coarse particles inside the compacting roller 12 (for example, the forming roller 11 and the compacting roller 12 can rotate clockwise).

[0051] like Figures 2 to 7As shown, the compacting roller 12 is internally provided with at least two levels of porous extrusion plates 121 and a spacing adjustment mechanism 122 connected to each porous extrusion plate 121. Each porous extrusion plate 121 has a plurality of extrusion through holes, and the surface structure of a single porous extrusion plate 121 extends in a direction parallel to the axis of the compacting roller 12. Different levels of porous extrusion plates 121 have different axial positions within the compacting roller 12. The different levels of porous extrusion plates 121 are connected by the spacing adjustment mechanism 122, allowing the spacing between them to be adjusted. The porous extrusion plates 121 inside the compacting roller 12 improve the compression effect on wet particles during particle tumbling, which helps to ensure the structural strength of the particles and prevents them from breaking during tumbling. By adjusting the spacing of the porous extrusion plates 121 through the spacing adjustment mechanism 122, the density of the porous extrusion plates 121 inside the compaction roller 12 can be adjusted, thereby changing the compaction effect on coarse particles and enabling precise control of the particle size of coarse particles.

[0052] Furthermore, the adjustment control unit is electrically connected to the first drive assembly 31 and the second drive assembly 32, respectively, and is used to adjust the rotational speed of the forming roller 11 and the compacting roller 12 based on the set target particle size of the finished product particles. By adjusting the rotational speed of the rollers, the particle size of the wet particles inside the forming roller 11 and the particle size of the coarse particles inside the compacting roller 12 change, thereby achieving precise control of the particle size of the finished product particles, so that the particle size of the finished product particles conforms to the preset target particle size. The adjustment control unit is electrically connected to the spacing adjustment mechanism 122, and is used to adjust the spacing position of adjacent porous extrusion plates 121 based on the set target particle size of the finished product particles, thereby achieving control of the particle size of the coarse particles inside the compacting roller 12, so as to achieve precise control of the particle size of the finished product particles.

[0053] In the above embodiments, the forming roller 11 and the compacting roller 12 are configured as separate structures, each with an independent drive assembly to achieve independent speed regulation. This allows for independent control of the particle size of wet particles inside the forming roller and the particle size of coarse particles inside the compacting roller, facilitating precise and flexible control of the finished particle size during granulation. The compacting roller 12 contains multi-stage porous extrusion plates 121, and the spacing of these plates is adjusted via a spacing adjustment mechanism 122. This allows for adjustment of the particle compaction and density, flexibly adjusting the particle size of coarse particles inside the compacting roller. The adjustment control unit can flexibly regulate the rotational speed or internal structure of the roller assembly based on a set target particle size for the finished product, precisely controlling the particle size. This improves the diversity of finished particles produced by the granulation device, expanding its application scenarios.

[0054] With the above settings, the drum-type fly ash granulation device based on segmented dynamic control in this embodiment of the invention can achieve precise control of particle size in different granulation processes, which is beneficial for producing finished particles of different particle sizes and improving the accuracy and flexibility of particle size control.

[0055] In the process of fly ash granulation, three granulation steps are required: forming, compaction, and polishing. The particle size and structural physical properties of the particles will undergo significant changes at different granulation stages, which will ultimately affect the particle size of the finished particles. By precisely controlling the particle size at different stages, it is possible to achieve precise and flexible control over the particle size of the finished particles, so as to manufacture high-quality finished particles with different particle size specifications.

[0056] In the forming process, fly ash powder is fed into the forming roller 11. After tumbling and polymerization, wet particles are output. During the particle forming process, the powder accumulates on the particle surface, which significantly increases the particle size. However, the particle structure is loose and the structural strength is low. The particle size of the wet particles is generally 110% to 115% of the particle size of the finished particles.

[0057] In the compaction process, wet particles are fed into the compaction roller 12, and after being compacted by extrusion, coarse particles are output. During the compaction process, the structure of the wet particles is compressed, the particle size decreases but the structural strength increases. The particle size of the coarse particles is generally 101% to 105% of the particle size of the finished product.

[0058] In the polishing process, coarse particles are fed into the polishing roller 13, and finished particles are output after friction polishing. During the polishing process, the surface structure of the coarse particles is subjected to friction and polishing, resulting in a slight reduction in particle size and an increase in the smoothness of the structure. The particle size of the finished particles is generally 99.5% to 100.5% of the target particle size.

[0059] Furthermore, in the compaction process, the process of turning wet granules into coarse granules requires drying. The evaporation of moisture within the granule structure also leads to a reduction in the particle size. By installing hot air conveying pipes extending into the drum assembly, high-temperature air is supplied to the drum assembly, raising the surrounding temperature of the wet granules. This improves the drying effect on both the wet and finished granules during the tumbling process, thereby improving the quality of the finished granules.

[0060] In the pellet forming process, the fly ash powder inside the forming roller 11 tumbles continuously as the forming roller 11 rotates. During the tumbling process, the fly ash powder comes into contact with and mixes with the binder or water, and then aggregates to form an initial nucleus. This causes the fine powder to coat the surface of the initial nucleus to increase the particle size and form wet particles with a preliminary particle shape.

[0061] During the pelletizing stage, the adjustment and control unit of the pelletizing device can adjust the rotational speed of the forming roller 11 via the first drive component 31 based on the set target particle size of the finished pellets, thereby controlling the particle size of the formed wet pellets. The forming roller 11 is mainly used to mix fly ash and binder to form initial nuclei. The initial nuclei continuously adsorb powder through tumbling motion, and then grow into wet pellets with a larger particle size. By adjusting the rotational speed of the forming roller 11, the first drive component 31 can change the contact time between the wet pellets and the powder during the tumbling process, thereby adjusting the particle size of the wet pellets.

[0062] For example, when the target particle size of the finished product increases, the particle size of the wet particles generated inside the forming roller 11 needs to increase synchronously. By controlling the first drive component 31 to reduce the rotational speed of the forming roller 11, the contact time between the wet particles and fly ash during the tumbling process is extended, allowing the wet particles to grow rapidly. Reducing the rotational speed also reduces the probability of breakage of the wet particles, thereby promoting the increase in the particle size of the wet particles and increasing the particle size of the finished product. Conversely, when the target particle size of the finished product decreases, the particle size of the wet particles generated inside the forming roller 11 needs to decrease synchronously. By controlling the first drive component 31 to increase the rotational speed of the forming roller 11, the contact time between the wet particles and fly ash is shortened, inhibiting the growth of the wet particles and thus reducing the particle size of the finished product.

[0063] In some embodiments, such as Figure 3 and Figure 4 As shown, the forming roller 11 is equipped with a tumbling lifter 111 and an angle adjustment mechanism 112 for adjusting the tilt angle of the tumbling lifter 111. By setting the tumbling lifter 111 with an adjustable angle inside the forming roller 11, the tumbling effect of the powder particles inside the forming roller 11 can be adjusted to achieve precise control of the particle size of the wet particles generated inside the forming roller 11. The tumbling lifter 111 changes its own angle, causing changes in the flow characteristics of the powder and particles inside the forming roller 11. By affecting the contact and aggregation of wet particles and powder, the particle size of the formed wet particles changes. For example, when the flow characteristics of powder and particles are enhanced, more powder accumulates and adheres to the surface of wet particles, and the particle size grows rapidly, which is suitable for manufacturing large-diameter particles; when the flow characteristics of powder and particles are reduced, less powder accumulates and adheres to the surface of wet particles, and the particle size grows slowly, which is suitable for manufacturing small-diameter particles.

[0064] Furthermore, the adjustment control unit is electrically connected to the angle adjustment mechanism 112. Based on the set target particle size of the finished product, the angle adjustment mechanism 112 adjusts the tilt angle of the tumbling lifting plate 111, thereby adjusting the particle size of the wet particles generated inside the forming roller 11, so that the particle size of the finished product conforms to the target particle size. Automatic adjustment via the control unit allows operators to set the required target particle size parameters, improving the automation and intelligence level of the granulation equipment and reducing the workload of personnel.

[0065] Optionally, the number of tumbling lifting plates 111 can be adjusted according to actual production needs. For example, if the ratio of binder to powder is low and the mixing effect of powder needs to be improved, 8 or more tumbling lifting plates 111 can be set to improve the mixing effect; if the ratio of binder to powder is high, 2 or 4 tumbling lifting plates 111 can be set to appropriately simplify the complexity of the internal structure.

[0066] Optionally, the tumbling lifting plate 111 may be provided with a wave structure, the grooves of which extend in a direction parallel to the axis of the forming roller 11. Providing a wave structure helps to increase the contact area between the tumbling lifting plate 111 and the powder particles, which in turn improves the tumbling effect of the powder and ensures the mixing effect of the fly ash powder and the binder.

[0067] Optionally, the surface of the tumbling lifting plate 111 may be provided with a roughened structure for contact with the powder particles. The roughened structure helps to increase the friction on the surface of the tumbling lifting plate 111, allowing it to simultaneously agitate and tumble more powder, thus improving the mixing effect between the powder and the binder. The roughened structure can be achieved by providing several uneven structures on the surface of the tumbling lifting plate 111, or by covering the surface of the tumbling lifting plate 111 with a rough coating material.

[0068] In some embodiments, a plurality of tumbling lifting plates 111 are provided inside the forming roller 11. The surface structure of each individual tumbling lifting plate 111 extends in a direction parallel to the axis of the forming roller 11, and the plurality of tumbling lifting plates 111 are evenly arranged along the radially curved inner wall of the forming roller 11. The tumbling lifting plates 111 are arranged at an angle, with the angle being opposite to the tangent direction of the rotational speed of the forming roller 11, and the angle being configured to be 35°~40°.

[0069] During the granulation stage, the forming roller 11 rotates clockwise. The tumbling lifting plates 111 lift some of the powder upwards during the rotation of the forming roller 11. Once the powder reaches a certain height or the tumbling lifting plates 111 reach a specific tilt angle (horizontal tilt angle less than 0 degrees), the powder automatically falls along the surface of the tumbling lifting plates 111 under gravity, forming a waterfall. By adjusting the tilt angle of the tumbling lifting plates 111, the size of the waterfall can be flexibly adjusted, changing the particle size growth of the wet particles, thereby achieving precise control over the particle size of the wet particles.

[0070] For example, by increasing the inclination angle of the tumbling lifting plate 111, the powder can fall from a higher position, increasing the waterfall flow and improving the tumbling effect, which is conducive to forming wet particles with a larger particle size; by decreasing the inclination angle of the tumbling lifting plate 111, the falling position of the powder is lowered, reducing the waterfall flow and decreasing the tumbling effect, which is conducive to forming wet particles with a smaller particle size.

[0071] In some embodiments, such as Figure 3 As shown, the angle adjustment mechanism 112 is located inside the mounting chamber and includes a linkage rotating ring 112-1, a rotation drive mechanism 112-2, and a rotating shaft transmission mechanism 112-3. The linkage rotating ring 112-1 is sleeved on the outside of the forming roller 11. The linkage rotating ring 112-1 is provided with a telescopic connecting rod for rotatably connecting with the rotating shaft transmission mechanism 112-3. The rotating shaft transmission mechanism 112-3 is installed on the inner sealing layer, and one side of the rotating shaft transmission mechanism 112-3 protrudes from the inner surface of the inner sealing layer for fixed connection with the tumbling lifting plate 111. The other side of the rotating shaft transmission mechanism 112-3 protrudes from the outside of the inner sealing layer for fixed connection with the telescopic connecting rod.

[0072] Furthermore, the rotation drive mechanism 112-2 is mounted on the forming roller 11, serving as a rotation fulcrum for angle adjustment. The inner side of the rotation drive mechanism 112-2 is fixedly connected to the tumbling lifting plate 111, and the outer side is fixedly connected to the telescopic connecting rod of the linkage rotation ring 112-1. The linkage rotation ring 112-1 can transmit rotational movement to the interior of the forming roller 11 through the rotation drive mechanism 112-2, thereby realizing the rotation drive function of the tumbling lifting plate 111 inside the forming roller 11 from the outside of the forming roller 11. The rotation drive mechanism 112-2 can adopt a rotating shaft or hinge structure, and it employs a sealed structure to prevent powder from overflowing from the forming roller 11 during rotation, ensuring the sealing effect of the inner sealing layer of the forming roller 11 on the powder.

[0073] Furthermore, the linkage rotating ring 112-1 interconnects multiple tumbling lifting plates 111, thereby realizing the linkage control of multiple tumbling lifting plates 111. It eliminates the need to set independent control components for each tumbling lifting plate 111, which helps to simplify the structural components and improve the consistency of the tilt angle of the tumbling lifting plates 111.

[0074] Furthermore, the rotation drive mechanism 112-2 is equipped with a telescopic drive mechanism. One end of the telescopic drive mechanism is rotatably connected to a first position of the inner sealing layer via a rotating shaft, and the other end is rotatably connected to a second position of the linkage rotating ring 112-1 via a rotating shaft. The first position and the second position are configured to be radially offset from each other on the forming roller 11. The telescopic drive mechanism is used to drive the linkage rotating ring 112-1 to rotate relative to the inner sealing layer to adjust the inclination angle of the tumbling lifting plate 111. By adjusting the extension or retraction of the telescopic drive mechanism, power is provided for the rotation of the linkage rotating ring 112-1. By controlling the extension or retraction distance of the telescopic drive mechanism, precise control of the inclination angle of the tumbling lifting plate 111 can be achieved, ultimately adjusting the particle size of the generated wet particles. The telescopic drive mechanism can adopt an active telescopic component such as an electric telescopic rod or a hydraulic telescopic rod, which simplifies the structure, improves durability, and facilitates daily maintenance and replacement.

[0075] Optionally, the rotation drive mechanism 112-2 can also use a drive motor to drive the rotation of the linkage rotating ring 112-1. A toothed groove structure can be provided on the inner wall of the linkage rotating ring 112-1. The drive motor is fixedly installed on the outer side of the inner sealing layer, and the motor gear meshes with the toothed groove structure of the linkage rotating ring 112-1. The rotation of the drive motor gear drives the linkage rotating ring 112-1 to rotate relative to the inner sealing layer, thereby achieving the rotation drive function. Using a drive motor for rotation drive allows the adjustment angle of the tumbling lifting plate 111 to have high adjustment accuracy and fast adjustment speed, enabling rapid and precise angle adjustment.

[0076] Inside the forming roller 11, the particle size of the generated wet particles can be adjusted by changing the tilt angle of the tumbling lifting plate 111 and the rotational speed of the forming roller 11. During the particle forming process, the particle size of the wet particles is affected by both the tumbling lifting plate 111 and the forming roller 11. Therefore, in the actual operation of controlling the particle size of wet particles, the particle size can be precisely controlled by the cooperation of these two parameters.

[0077] Optionally: when the rotation speed of the forming roller 11 is set to 15 prm and the tilt angle of the tumbling lifting plate 111 is set to 25°, the wet particle size generated is 1.1 mm; when the rotation speed of the forming roller 11 is set to 10 prm and the tilt angle of the tumbling lifting plate 111 is set to 25°, the wet particle size generated is 2.8 mm; when the rotation speed of the forming roller 11 is set to 12 prm and the tilt angle of the tumbling lifting plate 111 is set to 30°, the wet particle size generated is 3.3 mm; when the rotation speed of the forming roller 11 is set to 8 prm and the tilt angle of the tumbling lifting plate 111 is set to 25°, the wet particle size generated is 5.75 mm.

[0078] In the granulation process, the compaction roller 12 rotates clockwise. The resulting wet granules enter the compaction roller 12 and tumble continuously as it rotates. During this tumbling, the wet granules enter the extrusion holes and are subjected to mechanical compression and roller friction under centrifugal force or gravity, eventually passing through the extrusion holes and being discharged. In this process, the wet granules are forcibly compressed through the extrusion holes, causing plastic deformation of the granule structure. The pores on the surface of the wet granules are filled with fine powder, transforming the loosely structured wet granules into compactly structured coarse granules.

[0079] During the particle compaction stage, the control unit adjusts the rotational speed of the compaction roller 12 based on the set target particle size of the finished product to regulate the particle size of the formed coarse particles. The compaction roller 12 is mainly used to compress and compact loose wet particles into compact coarse particles. The second drive assembly 32 can change the residence time and collision frequency of the wet particles during the tumbling process by adjusting the rotational speed of the compaction roller 12, thereby adjusting the particle size of the coarse particles.

[0080] For example, when the target particle size of the finished product increases, the particle size of the coarse particles generated inside the compacting roller 12 needs to increase simultaneously. Reducing the rotation speed of the compacting roller 12 allows the coarse particles to roll or slide slowly inside the roller, thus prolonging their residence time. This increases the amount of powder adsorbed on the surface of the coarse particles, which is beneficial for promoting particle size growth. Reducing the rotation speed of the compacting roller 12 also reduces the collision frequency and energy during the movement, making the tumbling motion of the coarse particles relatively smooth. Less compression and impact during tumbling reduces the compression and compaction effect of the coarse particles, resulting in an increase in the particle size of the generated coarse particles. Conversely, when the target particle size of the finished product decreases, the particle size of the coarse particles generated inside the compacting roller 12 needs to decrease simultaneously. Increasing the rotation speed of the compacting roller 12 increases the collision frequency and energy of the coarse particles during their movement. The tumbling motion of coarse particles becomes more intense, and the collisions and impacts between coarse particles increase during the tumbling process. The force of these collisions and impacts also increases under the influence of gravity and centrifugal force, which improves the compression and compaction effect of coarse particles during the tumbling process, resulting in smaller particle sizes in the structure formed. Furthermore, the intense tumbling and impacts also increase the probability of coarse particles breaking, thereby inhibiting the generation of large-diameter coarse particles.

[0081] In some embodiments, such as Figures 5 to 7 As shown, the porous extrusion plate 121 inside the compaction roller 12 is arranged at an angle, with its inclination direction being the same as the tangential direction of the rotational speed of the forming roller 11, and its inclination angle being 45°. This arrangement of the porous extrusion plate 121 conforms to the tumbling motion characteristics of the powder. During the tumbling motion of the powder, centrifugal force and gravity are used to ensure that most of the powder can pass through the extrusion holes, which is beneficial for improving the compaction effect on coarse particles and ensuring the structural hardness of the finished particles. Including but not limited to this, the inclination angle of the porous extrusion plate 121 can also be set to 40°, 50°, or 60°, etc., and the inclination angle of the porous extrusion plate 121 can be flexibly adjusted according to the actual granulation environment.

[0082] Furthermore, the spacing between adjacent porous extrusion plates 121 is configured to be 50~100mm. During the operation of the compaction roller 12, the adjustment control unit adjusts the spacing of adjacent porous extrusion plates 121 based on the set target particle size of the finished product. When the target particle size of the finished product increases, the particle size of the coarse particles generated by the compaction roller 12 also needs to increase. By increasing the spacing between the porous extrusion plates 121, the arrangement of the porous extrusion plates 121 becomes relatively sparse. During the tumbling process, the compressive intensity on the coarse particles can be reduced, and the sparsely arranged porous extrusion plates 121 also shorten the effective compression time of the coarse particles during the tumbling process, thereby promoting the growth of the coarse particle size and increasing the particle size of the finished product. When the target particle size of the finished product decreases, it is necessary to suppress the growth of the coarse particle size inside the compaction roller 12. By reducing the spacing between the porous extrusion plates 121, the arrangement of the porous extrusion plates 121 becomes relatively dense. During the tumbling process, the extrusion frequency and continuity of coarse particles increase. The coarse particles pass through the multi-stage porous extrusion plates 121 inside the compacting roller 12, reducing the probability of coarse particle aggregation (i.e. the probability of particles aggregating with each other during granulation), thereby inhibiting the particle size growth of coarse particles and reducing the particle size of the finished product.

[0083] Furthermore, the aperture size of the extrusion holes on the porous extrusion plate 121 can be set to the median particle size according to the particle size range of the finished particles. When producing finished particles of various sizes, it is not necessary to adjust the aperture size of the extrusion holes for different particle sizes. By adjusting the spacing of the porous extrusion plates 121, the particle size of the finished particles can be flexibly controlled from the overall particle size distribution.

[0084] Optionally, such as Figure 5 As shown, inside the compacting roller 12, porous extrusion plates 121 of the same grade are evenly arranged at the same interval and angle along the circular curved inner wall to ensure the uniformity of the particle compaction effect at different positions during rotation. The number of porous extrusion plates 121 of the same grade can be adjusted according to the actual granulation requirements. For example, if the finished particle quality requirement is high and the overall compaction effect during granulation needs to be improved, the number of porous extrusion plates 121 installed inside the compacting roller 12 can be increased to 8 or more; if the finished particle quality requirement is low and the overall compaction effect during granulation needs to be reduced, the number of porous extrusion plates 121 installed inside the compacting roller 12 can be reduced to 2 or 4 to reduce the complexity of the internal structure of the compacting roller 12 and reduce the impact on the compaction effect during granulation.

[0085] Optionally, the porous extrusion plates 121 are staggered, and the porous extrusion plates 121 of different grades have different radial positions inside the compaction roller 12. This can increase the complexity of the running path of coarse particles during tumbling, improve the blocking effect of the porous extrusion plates 121 on the flow of powder, and enable most of the coarse particles to pass through the extrusion holes on the porous extrusion plates 121, which is beneficial to improving the structural strength of the finished particles.

[0086] Optionally, the two opening ends of the extrusion through hole on the porous extrusion plate 121 are provided with a flared structure. The flared structure guides the wet particles around the extrusion through hole, and can guide more wet particles into the extrusion through hole, which is beneficial to improving the extrusion effect and extrusion efficiency of the porous extrusion plate 121 on wet particles.

[0087] In some embodiments, such as Figures 5 to 7 As shown, the inner wall of the compacting roller 12 is provided with a plurality of rectangular through holes 124 along the axial direction. The compacting roller 12 is also provided with a linkage sliding ring 123, which is sleeved on the outer side of the compacting roller 12. The linkage sliding ring 123 is provided with a connecting block 123-1, which is located inside the rectangular through holes 124. One end of the connecting block 123-1 is fixedly connected to the porous extrusion plate 121, and the other end is fixedly connected to the linkage sliding ring 123. By setting the linkage sliding ring 123, the linkage control of the porous extrusion plates 121 located at the same level can be realized, which helps to simplify the overall structure of the spacing adjustment mechanism 122.

[0088] Furthermore, the rectangular through hole 124 on the inner wall of the compacting roller 12 serves as a sliding groove for the connecting block 123-1 during its sliding process. The connecting block 123-1 engages with the rectangular through hole 124, and a sealing structure is provided between the connecting block 123-1 and the rectangular through hole 124 to prevent the internal powder and particles from overflowing. The sealing structure can be a loop-shaped snap-fit ​​groove or a labyrinth-type snap-fit ​​groove to isolate the powder and particles inside the compacting roller 12.

[0089] Furthermore, such as Figure 6As shown, the spacing adjustment mechanism 122 is fixedly installed inside the mounting chamber and is arranged along the axial direction of the compacting roller 12. It is used to drive the linkage sliding ring 123 to slide and move, thereby adjusting the spacing distance between the perforated extrusion plates 121 at each stage. The spacing adjustment mechanism 122 includes a telescopic drive mechanism, a connecting spring, a sliding block, and a fixing block located on one side. The length direction of a single spacing adjustment mechanism 122 is parallel to the axial direction of the compacting roller 12. The telescopic drive mechanism and the fixing block are respectively located at opposite ends of the spacing adjustment mechanism 122. At least two sliding blocks are located in the middle position for fixed connection with the connecting block 123-1. The telescopic drive mechanism, the sliding blocks, and the fixing blocks are all connected by connecting springs. The telescopic drive mechanism can be a telescopic cylinder, a hydraulic telescopic cylinder, or an electric telescopic rod, etc.

[0090] When it is necessary to reduce the spacing of the porous extrusion plates 121, the telescopic drive mechanism automatically extends, thereby compressing the connecting springs and driving the sliding blocks to slide along the axial direction of the compacting roller 12, which in turn drives the porous extrusion plates 121 to slide. By compressing the connecting springs between the sliding blocks, the spacing between the sliding blocks is reduced, thereby reducing the spacing between the porous extrusion plates 121 at different stages. Conversely, when it is necessary to increase the spacing of the porous extrusion plates 121, the telescopic drive mechanism automatically shortens, thereby stretching the connecting springs. By stretching the connecting springs between the sliding blocks, the spacing between the sliding blocks is increased, thereby increasing the spacing between the porous extrusion plates 121 at different stages.

[0091] Inside the compaction roller 12, the particle size of the generated coarse particles can be flexibly controlled by adjusting the spacing of the porous extrusion plates 121 and the rotational speed of the compaction roller 12. During the compaction process, the particle size of the coarse particles is affected by both the porous extrusion plates 121 and the forming roller 11. Therefore, in the actual operation of controlling the particle size of coarse particles, precise control of the particle size can be achieved through the cooperation of these two parameters.

[0092] Optionally: when the compacting roller 12 speed is set to 15 prm and the spacing of the porous extrusion plates 121 is 50 mm, the coarse particle size generated is 1.01 mm; when the compacting roller 12 speed is set to 10 prm and the spacing of the porous extrusion plates 121 is 70 mm, the coarse particle size generated is 2.3 mm; when the compacting roller 12 speed is set to 10 prm and the spacing of the porous extrusion plates 121 is 70 mm, the coarse particle size generated is 3.5 mm; when the compacting roller 12 speed is set to 8 prm and the spacing of the porous extrusion plates 121 is 100 mm, the coarse particle size generated is 5.25 mm.

[0093] In the particle polishing process, the polishing roller 13 can rotate clockwise. The coarse particles formed enter the polishing roller 13 and tumble as the polishing roller 13 rotates. During the tumbling process, the coarse particles roll and rub against each other, causing the fine powder on the surface of the coarse particles to be peeled off or compacted. The uneven structure on the surface of the coarse particles is blunted by friction, which improves the roundness of the overall structure of the coarse particles and the smoothness of the surface. After being polished by the polishing roller 13, the coarse particles become finished particles. The polishing process can optimize the appearance and uniformity of the particles, ensure the concentrated particle size distribution, and help to reduce the particle size distribution range of the finished particles and improve the uniformity of the particle size of the finished particles.

[0094] In some embodiments, such as Figure 1 and Figure 2 As shown, the roller assembly 1 also includes a polishing roller 13, which is coaxially arranged with the compacting roller 12. The polishing roller 13 is located downstream of the compacting roller 12. A third drive assembly 33 is provided at the bottom of the polishing roller 13. The rotation speed of the polishing roller 13 can be independently adjusted through the third drive assembly 33, thereby adjusting the polishing effect on coarse particles and adjusting the particle size of the finished product. By improving the polishing effect on the finished product, the uniformity of the particle size distribution of the finished product can be improved, as well as the sphericity of the finished product particle structure can be improved.

[0095] During the polishing process, increasing the rotation speed of the polishing roller 13 intensifies the tumbling motion of the coarse particles, promoting friction and passivation on the surface of the coarse particles, inhibiting particle size growth during tumbling, and thus reducing the particle size of the finished product. Conversely, decreasing the rotation speed of the polishing roller 13 smooths out the tumbling motion of the coarse particles, inhibiting friction and passivation on the surface of the coarse particles, and thus increasing the particle size of the finished product.

[0096] Furthermore, such as Figure 8 and Figure 9 As shown, the polishing roller 13 is equipped with a polishing lifting plate 131 and an arc adjustment mechanism 132 for adjusting the curvature of the polishing lifting plate 131. The adjustment control unit is electrically connected to the arc adjustment mechanism 132 and is used to adjust the curvature of the polishing lifting plate 131 based on the set target particle size of the finished product particles. This allows coarse particles to have different mechanical action strengths and rolling friction strengths when tumbling inside the polishing roller 13. By adjusting the polishing degree of the particles by the polishing lifting plate 131, the particle size of the finished product particles can be adjusted.

[0097] During particle polishing, coarse particles with rough surfaces tumble inside the polishing drum 13, transforming into smooth, finished particles after frictional polishing. When the target particle size increases, increasing the curvature of the polishing baffle 131 makes its radial structure more circular, stabilizing the tumbling motion of the coarse particles inside the polishing drum 13 and reducing the friction and polishing effect on the coarse particle surface, thus facilitating an increase in the finished particle size. Conversely, when the target particle size decreases, decreasing the curvature of the polishing baffle 131 makes its radial structure more elliptical, intensifying the tumbling motion of the coarse particles inside the polishing drum 13 and enhancing the friction and polishing effect on the coarse particle surface, thus facilitating a decrease in the finished particle size.

[0098] In some embodiments, such as Figure 8 and Figure 9 As shown, the polishing lifting plate 131 has a curved arc surface that extends in a direction parallel to the axis of the polishing roller 13. The polishing lifting plate 131 is in close contact with the curved inner wall of the polishing roller 13. The polishing lifting plate 131 is arranged along the inner wall of the polishing roller 13, which conforms to the movement and tumbling characteristics of powder particles, and can achieve efficient polishing of coarse particles through the rotation of the polishing roller 13.

[0099] Furthermore, the radius of curvature of the polishing lifting plate 131 is configured to be 200~300mm. When the radius of curvature of the polishing lifting plate 131 is equal to the radius of the polishing roller 13, the radial shape of the polishing lifting plate 131 is circular, making the tumbling motion of the internal coarse particles tend to be stable. When the radius of curvature of the polishing lifting plate is greater than or less than the radius of the polishing roller 13, the radial shape of the polishing lifting plate 131 is elliptical, making the tumbling motion of the internal coarse particles tend to be violent and chaotic.

[0100] Furthermore, the polishing plate 131 is configured as a sheet structure and can deform to change its own curvature. The polishing plate 131 can be made of stainless steel or steel lining, which helps to reduce the weight of the polishing plate 131 and improve its durability.

[0101] Optionally, the inner surface of the polishing plate 131 is provided with a smooth structure for contacting and rubbing with powder particles. The smooth structure can improve the polishing effect on coarse particles and increase the smoothness of the surface of the coarse particles. The surface structure of the polishing plate 131 can be directly polished or a smooth coating material can be applied to the surface of the polishing plate 131.

[0102] In some embodiments, such as Figure 8As shown, the curvature adjustment mechanism 132 is located on the outer sides of the polishing lifting plate 131 on opposite sides. One end of the mechanism is connected to the polishing lifting plate 131, and the other end is connected to the inner wall of the polishing roller 13. It is used to adjust the curvature of the polishing lifting plate 131 by lifting or lowering it. When the target particle size increases, the particle size of the finished product needs to be increased. The curvature adjustment mechanism 132 can drive the polishing lifting plate 131 to deform by shortening its movement, increasing the curvature. The radial shape of the polishing lifting plate 131 tends to be circular, making the tumbling motion of coarse particles more stable, thus suppressing friction on the surface of coarse particles and improving the polishing effect, thereby increasing the particle size of the finished product. When the target particle size decreases, the particle size of the finished product needs to be reduced accordingly. The curvature adjustment mechanism 132 can drive the polishing lifting plate to deform by elongating its movement, increasing the curvature. The radial shape of the polishing lifting plate 131 tends to be elliptical, making the tumbling motion of coarse particles more intense, thus improving the mutual friction and polishing effect of coarse particles during tumbling, thereby reducing the particle size of the finished product.

[0103] Optionally, the curvature adjustment mechanism 132 can be an electric telescopic rod or a hydraulic telescopic rod to achieve precise adjustment of the curvature of the polishing plate 131, which is beneficial to improving the accuracy and flexibility of particle size control of the finished product.

[0104] Inside the polishing roller 13, the particle size of the finished product can be adjusted by changing the radius of curvature of the polishing lifting plate 131 and the rotational speed of the polishing roller 13. During the polishing process, the particle size is affected by both the polishing lifting plate 131 and the polishing roller 13. Therefore, in the actual particle size control operation, the precise control of the wet particle size can be achieved through the cooperation of these two parameters.

[0105] Optionally: when the polishing roller 13 speed is set to 15 prm and the radius of curvature of the polishing lifting plate 131 is 300 mm, the particle size of the finished product is 1 mm; when the polishing roller 13 speed is set to 15 prm and the radius of curvature of the polishing lifting plate 131 is 250 mm, the particle size of the finished product is 2 mm; when the polishing roller 13 speed is set to 8 prm and the radius of curvature of the polishing lifting plate 131 is 250 mm, the particle size of the finished product is 4 mm; when the polishing roller 13 speed is set to 8 prm and the radius of curvature of the polishing lifting plate 131 is 200 mm, the particle size of the finished product is 5 mm.

[0106] In some embodiments, such as Figure 1 and Figure 10As shown, the granulation device further includes: a first support assembly 21 disposed at the bottom of the forming roller 11, a second support assembly 22 disposed at the bottom of the compacting roller 12, and a third support assembly 23 disposed at the bottom of the polishing roller 13. By providing independent support assemblies at the bottoms of the forming roller 11, compacting roller 12, and polishing roller 13, the stability of the roller assembly 1 during rotation can be improved. Independent support for each section of the roller facilitates differential speed connection between the sections and improves the flexibility of speed adjustment.

[0107] Furthermore, each support assembly includes at least two support wheel mechanisms, each located at one end of the roller axis. At least two rotating support rings 17 are fitted onto the outer walls of the forming roller 11, the compacting roller 12, and the polishing roller 13, respectively, located at one end of the roller axis and used to engage with the support wheel mechanisms. By setting the support wheel mechanisms to rotate and engage with the rotating support rings, stable support for the rotating rollers can be achieved, which helps to expand the granulation space inside the rollers, simplify the internal structure of the roller assembly 1, and facilitate installation and maintenance.

[0108] Furthermore, such as Figure 10 As shown, the support wheel mechanism includes at least two support wheel sets and a base. The two support wheel sets are symmetrically arranged and located on opposite sides of the roller's radial direction. The support wheel sets are rotatably connected to the base via bearings. The two symmetrically arranged support wheel sets stably support the roller structure at the center of the two sets, thus providing rotational support for the roller.

[0109] In some embodiments, such as Figure 10 As shown, the outer wall of the forming roller 11 is fitted with a first transmission gear ring 161 for meshing with the first drive component 31; the outer wall of the compacting roller 12 is fitted with a second transmission gear ring 162 for meshing with the second drive component 32; and the outer wall of the polishing roller 13 is fitted with a third transmission gear ring 163 for meshing with the third drive component 33. By setting independent transmission gear rings and engaging with independent drive components, the rotational speed of each roller segment can be independently adjusted, enabling differential speed connection between the forming roller 11, compacting roller 12, and polishing roller 13, ensuring that the normal flow of powder particles within each roller segment is unaffected.

[0110] In some embodiments, the roller assembly 1 has a double-layer structure, comprising an outer protective layer and an inner sealing layer. The internal space of the inner sealing layer is used for the flow and generation of powder particles. An installation chamber is provided between the outer protective layer and the inner sealing layer. The double-layer structure of the roller assembly 1 improves the sealing effect on the internal powder, preventing powder from overflowing and being wasted during tumbling. The installation chamber formed between the layers can be used to house functional adjustment components such as a spacing adjustment mechanism 122, an angle adjustment mechanism 112, and an arc adjustment mechanism 132. The inner sealing layer isolates the internal powder particles from the complex functional adjustment components, preventing powder from accumulating inside the complex structure and affecting the normal operation of the functional adjustment components. This extends the working time of the granulation device, reduces the internal powder escape rate, and decreases the frequency of cleaning and maintenance of the granulation device.

[0111] In some embodiments, the overall length-to-diameter ratio of the roller assembly 1 can be set to 3.2:1, which is longer than the drum in the prior art, thus extending the residence time of the powder inside and improving the particle quality. The inner wall of the roller assembly can be provided with a tungsten carbide alloy liner with a thickness of 8mm, which helps to improve the wear resistance of the internal structure of the roller assembly 1, extending the service life of the roller assembly to more than 8000 hours, and improving the durability of the granulation device.

[0112] According to the technical solution described in the embodiment of the present invention, the beneficial effects that can be achieved include at least the following: (1) The forming roller of the granulation device in the embodiment of the present invention is provided with an independent first driving component, a second driving component and a third driving component, which can adjust the rotation speed of the forming roller, the compacting roller and the polishing roller respectively based on the set target particle size of the finished particles, so as to adjust the wet particle size in the granulation forming stage, the coarse particle size in the granulation compacting stage and the finished particle size respectively, which is beneficial to improve the accuracy and flexibility of particle size control during the granulation process, so that the granulation device can manufacture high-quality finished particles with different particle size.

[0113] (2) The forming roller of the granulation device in the embodiment of the present invention is provided with a tumbling lifting plate and an angle adjustment mechanism. Based on the set target particle size of the finished product particles, the tilt angle of the tumbling lifting plate can be adjusted by the angle adjustment mechanism to adjust the particle size of the generated wet particles, which is beneficial to accurately control the particle size of the wet particles in the particle forming stage.

[0114] (3) The compaction roller of the granulation device in the embodiment of the present invention is provided with a porous extrusion plate and a spacing adjustment mechanism. Based on the set target particle size of the finished particles, the spacing between different levels of porous extrusion plates can be adjusted by the spacing adjustment mechanism to adjust the particle size of the generated coarse particles. This is beneficial to accurately control the particle size of coarse particles in the compaction stage of the particles.

[0115] (4) The compacting roller of the granulation device in this embodiment of the invention is equipped with a polishing plate and an arc adjustment mechanism. Based on the set target particle size of the finished product particles, the bending arc of the polishing plate can be adjusted by the arc adjustment mechanism to adjust the particle size of the generated finished product particles. This is beneficial to accurately control the particle size of the finished product particles during the polishing stage.

[0116] It should be clarified that the present invention is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of the present invention.

[0117] In this invention, features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, and / or combined with or in place of features of other embodiments.

[0118] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and variations of the embodiments of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A drum-type fly ash granulation device based on segmented dynamic control, characterized in that, The granulation device includes a roller assembly (1) and an adjustment and control unit; The roller assembly (1) is a multi-segment split structure, including at least a forming roller (11) and a compacting roller (12) arranged adjacent to each other; the forming roller (11) and the compacting roller (12) are arranged coaxially, and the forming roller (11) is located upstream of the compacting roller (12); the granulation device further includes: a first drive assembly (31) disposed at the bottom of the forming roller (11) and a second drive assembly (32) disposed at the bottom of the compacting roller (12), wherein the first drive assembly (31) and the second drive assembly (32) are configured to independently adjust their rotation speed; The compacting roller (12) is provided with at least two levels of porous extrusion plates (121) and a spacing adjustment mechanism (122) connected to each porous extrusion plate (121); wherein, each porous extrusion plate (121) is provided with a plurality of extrusion through holes, the plate surface structure of a single porous extrusion plate (121) extends in a direction parallel to the axis of the compacting roller (12), and the porous extrusion plates (121) of different levels have different axial positions in the compacting roller (12); the porous extrusion plates (121) of different levels are connected by the spacing adjustment mechanism (122) so that the spacing between the porous extrusion plates (121) of different levels can be adjusted by the spacing adjustment mechanism (122); The roller assembly (1) further includes a polishing roller (13), which is provided with a polishing lifting plate (131) and an arc adjustment mechanism (132) for adjusting the curvature of the polishing lifting plate (131); the forming roller (11) is provided with a tumbling lifting plate (111) and an angle adjustment mechanism (112) for adjusting the tilt angle of the tumbling lifting plate (111). The roller assembly (1) has a double-layer structure, including an outer protective layer and an inner sealing layer, with an installation chamber between the outer protective layer and the inner sealing layer; The angle adjustment mechanism (112) is located inside the mounting chamber and includes a linkage rotating ring (112-1), a rotation drive mechanism (112-2), and a rotating shaft transmission mechanism (112-3). The linkage rotating ring (112-1) is sleeved on the outside of the forming roller (11). The linkage rotating ring (112-1) is provided with a telescopic connecting rod for connecting with the rotating shaft transmission mechanism (112-3). The rotating shaft transmission mechanism (112-3) is installed on the inner sealing layer, and one side of the rotating shaft transmission mechanism (112-3) protrudes from the inner surface of the inner sealing layer for fixed connection with the tumbling lifting plate (111). The other side of the rotating shaft transmission mechanism (112-3) protrudes from the outside of the inner sealing layer for fixed connection with the telescopic connecting rod. The rotation drive mechanism (112-2) is provided with a telescopic drive mechanism. One end of the telescopic drive mechanism is rotatably connected to the first position of the inner sealing layer via a rotating shaft, and the other end is rotatably connected to the second position of the linkage rotating ring (112-1) via a rotating shaft. The first position and the second position are configured to be offset from each other in the radial direction of the forming roller (11). The telescopic drive mechanism is used to drive the linkage rotating ring (112-1) to rotate relative to the inner sealing layer in order to adjust the tilt angle of the tumbling lifting plate (111). The adjustment control unit is electrically connected to the angle adjustment mechanism (112), the arc adjustment mechanism (132), the first drive assembly (31), the second drive assembly (32), and the spacing adjustment mechanism (122), respectively. It is used to adjust the tilt angle of the tumbling lifting plate (111) through the angle adjustment mechanism (112) based on the set target particle size of the finished product particles, adjust the arc size of the polishing lifting plate (131) through the arc adjustment mechanism (132), adjust the rotation speed of the forming roller (11) and the compacting roller (12) through the first drive assembly (31) and the second drive assembly (32), and adjust the spacing position of adjacent porous extrusion plates (121) through the spacing adjustment mechanism (122).

2. The drum-type fly ash granulation device based on segmented dynamic control according to claim 1, characterized in that, The polishing roller (13) is arranged coaxially with the compacting roller (12), the polishing roller (13) is located downstream of the compacting roller (12), and a third drive assembly (33) is provided at the bottom of the polishing roller (13). A first annular connecting mechanism (14) is provided at the connection position between the forming roller (11) and the compacting roller (12), and a second annular connecting mechanism (15) is provided at the connection position between the compacting roller (12) and the polishing roller (13).

3. The drum-type fly ash granulation device based on segmented dynamic control according to claim 2, characterized in that, The internal space of the inner sealing layer is used for the circulation and generation of particles.

4. The drum-type fly ash granulation device based on segmented dynamic control according to claim 3, characterized in that, A plurality of the aforementioned tumbling and lifting plates (111) are provided inside the forming roller (11). Among them, the plate structure of a single tumbling lifting plate (111) extends in a direction parallel to the axis of the forming roller (11), and a plurality of tumbling lifting plates (111) are evenly arranged along the curved inner wall of the forming roller (11) in the radial direction. The tumbling lifting plate (111) is arranged at an angle, and its tilt direction is configured to be opposite to the tangent direction of the rotation speed of the forming roller (11), with an inclination angle of 35°~40°.

5. The drum-type fly ash granulation device based on segmented dynamic control according to claim 3, characterized in that, The forming roller (11) is provided with at least two levels of the tumbling lifting plates (111), and the different levels of the tumbling lifting plates (111) have different axial positions inside the forming roller (11). The tumbling lifting plates (111) are arranged in a staggered manner, and the tumbling lifting plates (111) of different grades have different radial positions inside the forming roller (11).

6. The drum-type fly ash granulation device based on segmented dynamic control according to claim 3, characterized in that, The porous extrusion plate (121) is arranged at an angle, and its tilt direction is configured to be the same as the tangential direction of the rotation speed of the forming roller (11), and its tilt angle is configured to be 45°. The spacing between the porous extrusion plates (121) of adjacent stages is configured to be 50~100mm; The porous extrusion plates (121) are staggered, and the porous extrusion plates (121) of different grades have different radial positions inside the compacting roller (12); The inner wall of the compacting roller (12) is provided with a plurality of rectangular through holes (124) along the axial direction. The compacting roller (12) is also provided with a linkage sliding ring (123). The linkage sliding ring (123) is sleeved on the outer side of the compacting roller (12). The linkage sliding ring (123) is provided with a connecting block (123-1). The connecting block (123-1) is located inside the rectangular through holes (124). One end of the connecting block (123-1) is fixedly connected to the porous extrusion plate (121), and the other end is fixedly connected to the linkage sliding ring (123). The spacing adjustment mechanism (122) is fixedly installed inside the mounting chamber and is arranged along the axial direction of the compacting roller (12) to drive the linkage sliding ring (123) to slide and move, so as to adjust the spacing between the porous extrusion plates (121) at each stage.

7. The drum-type fly ash granulation device based on segmented dynamic control according to claim 3, characterized in that, The polishing lifting plate (131) has a curved arc surface that extends in a direction parallel to the axis of the polishing roller (13), and the curved inner wall of the polishing lifting plate (131) is in contact with the polishing roller (13). The polishing plate (131) is configured as a sheet structure and can be deformed to change its own curvature. The curvature adjustment mechanism (132) is located on the outer side of the polishing plate (131) on opposite sides. One end of the mechanism is connected to the polishing plate (131) and the other end is connected to the inner wall of the polishing roller (13). It is used to adjust the curvature of the polishing plate (131) by lifting or lowering it. The inner surface of the polishing plate (131) is provided with a smooth surface structure for contacting and rubbing with powder particles; The radius of curvature of the polishing plate (131) is configured to be 200~300mm.

8. The drum-type fly ash granulation device based on segmented dynamic control according to claim 3, characterized in that, The tumbling lifting plate (111) has a wave structure, and the grooves of the wave structure extend in a direction parallel to the axis of the forming roller (11). The surface of the tumbling lifting plate (111) is provided with a rough surface structure for contacting the powder particles; The two opening ends of the extrusion through hole are provided with a flared structure.

9. The drum-type fly ash granulation device based on segmented dynamic control according to claim 2, characterized in that, The granulation device further includes: a first support component (21) disposed at the bottom of the forming roller (11), a second support component (22) disposed at the bottom of the compacting roller (12), and a third support component (23) disposed at the bottom of the polishing roller (13). Each support component includes at least two support wheel mechanisms, which are located at both ends of the roller axis. The outer walls of the forming roller (11), the compacting roller (12), and the polishing roller (13) are respectively fitted with at least two rotating support rings (17), which are located at both ends of the roller axis and are used to engage with the support wheel mechanisms. The outer wall of the forming roller (11) is fitted with a first transmission gear ring (161) for meshing with the first drive assembly (31); the outer wall of the compacting roller (12) is fitted with a second transmission gear ring (162) for meshing with the second drive assembly (32); the outer wall of the polishing roller (13) is fitted with a third transmission gear ring (163) for meshing with the third drive assembly (33).

10. The drum-type fly ash granulation device based on segmented dynamic control according to claim 9, characterized in that, The support wheel mechanism includes at least two support wheel sets and a base. The two support wheel sets are arranged symmetrically and are located on both sides of the roller radially. The support wheel sets are rotatably connected to the base through bearings.

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