Granulation tower for zirconium oxide bead production and forming method

Abstract

The invention discloses a granulation tower for zirconia bead production and a forming method, and relates to the technical field of granulation towers, the granulation tower comprises a rotary supporting disc, a transmission base is arranged at the lower end of the rotary supporting disc, a rolling ball mechanism is rotatably mounted at the upper end of the transmission base, and a mist pipe is arranged on one side of the transmission base; and a particle rubbing mechanism is arranged at the bottom of the mist pipe. After zirconium oxide powder is added into the particle rubbing mechanism, the transmission base drives the rolling ball mechanism to rotate and synchronously drives the spraying mechanism to rotate, and the spraying mechanism uniformly sprays a binder solution in the rotating process, so that efficient agglomeration of the zirconium oxide powder is realized under the synergistic effect of dynamic wetting and rubbing, and uniform distribution and continuous wetting of liquid are realized; local overwetting or dry powder accumulation is avoided, the nucleation efficiency of the initial pearl nucleus is improved, meanwhile, the shearing and turning effects on the powder are enhanced through the rotating motion of the spraying mechanism, and the initial pearl nucleus narrow in particle size distribution and high in sphericity degree is formed.

Description

Technical Field

[0001] The present invention relates to the technical field of granulation towers, in particular to a granulation tower and a molding method for producing zirconium oxide beads. Background Art

[0002] For example, the announcement number is CN119869336A, and the patent name is an energy-saving and environmentally friendly spray granulation tower for processing alumina ceramic materials, including a base plate, a mixing barrel fixedly installed on the upper end of the base plate, a heating tube spirally wound on the outer side of the mixing barrel, a stirring assembly provided in the inner cavity of the mixing barrel, a granulation tower box provided at the rear end of the mixing barrel, and a collecting hopper fixedly connected to the lower end of the granulation tower box. By starting the drive motor, the output end of the drive motor will drive the first stirring shaft to rotate, and the rotation of the first stirring shaft will drive the main cone wheel to rotate, and the rotation of the main cone wheel will drive the transmission cone wheel to rotate, and then through the cooperation of the slave cone wheel, the second stirring shaft can be easily rotated in the opposite direction, and then multiple sets of stirring rods can be realized to fully stir the material in the mixing barrel, which can avoid the problem of substandard quality and size of spherical particles formed due to uneven mixing of the materials.

[0003] During use, the above-mentioned granulation tower often adopts spray drying or static wetting method for initial nucleation, which has problems such as local over-wetting, uneven agglomeration, wide particle size distribution of beads and poor sphericity, resulting in unstable quality of the initial beads formed, which in turn affects the subsequent growth process. In addition, in the rounding or rolling growth stage, the beads usually move along a fixed trajectory with a single movement path, which is prone to uneven friction and uneven powder supply, resulting in uneven coating layer thickness, loose internal structure, and many surface burrs, causing adhesion and agglomeration between particles. At the same time, some areas are damaged due to repeated friction, while other areas may be insufficiently coated due to insufficient contact. Therefore, the present application provides a granulation tower and forming method for zirconia bead production to meet the needs. Summary of the Invention

[0004] The purpose of this application is to provide a granulation tower and molding method for the production of zirconia beads, which can effectively solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present application provides the following technical solutions: a granulation tower for producing zirconia beads, comprising a rotating support plate, a transmission base provided at the lower end of the rotating support plate, a ball rolling mechanism rotatably mounted on the upper end of the transmission base, a mist pipe provided on one side of the transmission base, and a granulation mechanism provided at the bottom of the mist pipe, the granulation mechanism being located directly above the ball rolling mechanism, a baffle provided between the ball rolling mechanism and the granulation mechanism, and the baffle being rotatably mounted on one side of the mist pipe, a spray mechanism fixedly mounted inside the ball rolling mechanism for cooperating with the granulation mechanism to spray granulate zirconia; The spray mechanism includes a central axis tube, and a plurality of double-layer conical frames distributed at equal intervals are provided on the upper portion of the outer surface of the central axis tube, a plurality of leakage grooves distributed in a circular array are opened inside the double-layer conical frames, and a plurality of rubbing blocks distributed in a circular array are provided inside the double-layer conical frames.

[0006] The particle rolling mechanism includes an atomizing cylinder, which is installed at the lower end of the mist pipe. A feed pipe is provided at the upper end of the atomizing cylinder, and a plurality of multi-layered rolling pieces distributed in a ring array are provided on the inner wall of the atomizing cylinder.

[0007] The outer surface of the rubbing sheet is provided with a plurality of ribs distributed at equal intervals, and the rubbing sheet is in an arc-shaped triangle shape, and a plurality of leakage holes are opened on one side of the outer surface of the rubbing sheet.

[0008] The double-layer cone frame is supported on the outer surface of the rubbing sheet, and the rubbing block is in contact with the surface of the rubbing sheet.

[0009] A spray ring is provided on the outer surface of the central axis tube and located between the two double-layer cone frames, and a spiral sheet is provided on the outer surface of the spray ring. The spiral sheet is in the shape of an inverted cone spiral.

[0010] The ball rolling mechanism includes a wave rolling assembly, which includes a sleeve rod and an outer cylinder. The outer surface of the sleeve rod is provided with a cone bucket plate, and the cone bucket plate is funnel-shaped.

[0011] Among them, the outer surface of the cone bucket plate is provided with a wave plate, and the wave plate is in the shape of a wave ring. The wave plate is fixedly installed on the inner wall of the outer cylinder, and the outer cylinder is rotatably placed on the upper end of the rotating support plate. The sleeve rod is connected to the transmission end inside the transmission base, and the central axis tube is fixedly installed inside the sleeve rod.

[0012] Among them, the ball rolling mechanism includes a spiral tumbling assembly, which includes a connecting shaft and a cylinder. A cone disk is provided on the outer surface of the connecting shaft, and the cone disk is fixedly installed on the inner wall of the cylinder. The cylinder is rotatably placed on the upper end of the rotating support disk. The outer surface of the cone disk is provided with spiral ribs distributed in a spiral pattern. The connecting shaft is connected to the transmission end inside the transmission base, and the central axis tube is fixedly installed inside the connecting shaft.

[0013] Among them, the rolling ball mechanism includes a tilting and rolling assembly, which includes a toggle plate, a cover tube and a shaft rod. An inclined plate is arranged between the outer surface of the shaft rod and the inner wall of the cover tube, and the inclined plate is placed at an inclined angle. The bottom wall of the inclined plate is provided with a number of protrusions distributed in a circular array. The toggle plate is fixedly installed on the upper end of the rotating support plate, and the toggle plate is in contact with the protrusions. The cover tube is rotatably placed on the upper end of the rotating support plate. The shaft rod is connected to the transmission end inside the transmission base, and the central axis tube is fixedly installed inside the shaft rod.

[0014] The present invention also provides a molding method for producing zirconia beads. The specific molding method of zirconia beads is as follows: Step 1: Add zirconium oxide powder to the granulating mechanism. The transmission base drives the ball rolling mechanism to rotate, and at the same time drives the spray mechanism to rotate synchronously. The spray mechanism sprays the binder solution into the granulating mechanism during the rotation process to wet and knead the zirconium oxide powder, causing the powder to agglomerate and form initial bead nuclei. The formed bead nuclei gradually fall into the ball rolling mechanism under the action of gravity and the rotation of the spray mechanism. Step 2: The bead core falls into the rolling ball mechanism and continues to rotate. Under the combined action of centrifugal force and rolling friction, it continuously absorbs the scattered zirconium oxide powder around it to form spherical beads.

[0015] In summary, the technical effects and advantages of the present invention are as follows: 1. After the zirconium oxide powder is added to the granulation mechanism, the transmission base drives the ball rolling mechanism to rotate and simultaneously drives the spray mechanism to rotate. The spray mechanism evenly sprays the binder solution during the rotation process, so that the zirconium oxide powder is efficiently agglomerated under the synergistic effect of dynamic wetting and kneading, resulting in uniform distribution and continuous wetting of the liquid, avoiding local over-wetting or dry powder accumulation, and improving the nucleation efficiency of the initial bead nucleus. At the same time, the rotation of the spray mechanism enhances the shearing and tumbling effects on the powder, forming initial bead nuclei with narrow particle size distribution and high sphericity. 2. In the present invention, the initial bead core that falls into the rolling ball mechanism is subjected to the combined influence of centrifugal force and rolling friction under the action of continuous rotation, and exhibits periodic rolling motion in the cavity. During this process, the bead core continuously absorbs the free-flowing zirconia powder around it, and realizes uniform coating and compaction layer by layer through repeated rolling, which effectively promotes the close arrangement between particles and improves the structural density and mechanical strength of the beads. At the same time, the dynamic rolling process avoids adhesion and irregular aggregation between particles, ensuring that the final beads have good sphericity and uniform particle size distribution.

[0016] 3. Due to the geometric differences and inclined installation methods of the conical bucket and the wavy plate in the present invention, the rolling path of the bead nucleus on the surfaces of the two is highly nonlinear and unpredictable. The complex motion trajectory breaks the regularity of particle movement in the traditional rolling process and avoids the problems of local excessive friction or uneven coating. At the same time, the irregular collision and rolling help to trim the particle shape, improve the sphericity, promote the densification of the internal structure, and enhance the uniformity and stability of the bead nucleus growth. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the granulation tower from the first perspective; Figure 2 This is a schematic diagram of the three-dimensional structure of the granulation tower from the second perspective; Figure 3 This is a schematic diagram of the three-dimensional structure of the granulation tower from a third perspective; Figure 4 This is a schematic diagram of the granulation tower's three-dimensional structure from the fourth perspective; Figure 5 This is a schematic diagram of the partial first-person perspective three-dimensional connection structure of the granulation tower; Figure 6 It is a schematic diagram of the partial second-view three-dimensional connection structure of the granulation tower; Figure 7 It is a cross-sectional view of the three-dimensional connection structure of the pelletizing mechanism; Figure 8 Schematic diagram of the three-dimensional connection structure of the rubbing film; Figure 9 Schematic diagram of the three-dimensional connection structure of the spray mechanism; Figure 10 Schematic diagram of the three-dimensional connection structure of the double-layer cone frame; Figure 11 It is a cross-sectional view of the three-dimensional connection structure of the double-layer cone frame; Figure 12 Schematic diagram of the three-dimensional connection structure of the spiral sheet; Figure 13 It is a schematic diagram of the three-dimensional connection structure of the tilt and roll assembly; Figure 14 It is a cross-sectional view of the three-dimensional connection structure of the tilting and rolling assembly; Figure 15 It is a schematic diagram of the three-dimensional connection structure of the wave rolling component; Figure 16 It is a cross-sectional view of the three-dimensional connection structure of the wave rolling assembly; Figure 17 It is a schematic diagram of the three-dimensional connection structure of the spiral tumbling component; Figure 18 It is a cross-sectional view of the three-dimensional connection structure of the spiral tumbling component.

[0019] In the figure: 1. Transmission base; 2. Baffle; 3. Rotating support plate; 4. Ball rolling mechanism; 41. Wave tumbling assembly; 411. Outer cylinder; 412. Sleeve rod; 413. Cone bucket plate; 414. Wave plate; 42. Spiral tumbling assembly; 421. Cylinder; 422. Cone plate; 423. Spiral rib; 424. Connecting shaft; 43. Inclined tumbling assembly; 431. Cover cylinder; 432. Shaft; 433. Inclined plate; 434. Paddle plate; 435. Bump; 5. Particle rubbing mechanism; 51. Atomizing cylinder; 52. Feeding pipe; 53. Rubbing plate; 54. Rib protrusion; 55. Leakage hole; 6. Mist pipe; 7. Spray mechanism; 71. Middle axis tube; 72. Spiral plate; 73. Spray ring; 74. Double-layer cone frame; 75. Leakage trough; 76. Rubbing block. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1, Reference Figures 1 to 18 The granulation tower for producing zirconia beads shown in the figure includes a rotating support plate 3, a transmission base 1 is provided at the lower end of the rotating support plate 3, a ball rolling mechanism 4 is rotatably mounted on the upper end of the transmission base 1, a mist pipe 6 is provided on one side of the transmission base 1, and a granulation mechanism 5 is provided at the bottom of the mist pipe 6. The granulation mechanism 5 is located directly above the ball rolling mechanism 4, a baffle 2 is provided between the ball rolling mechanism 4 and the granulation mechanism 5, and the baffle 2 is rotatably mounted on one side of the mist pipe 6, and a spray mechanism 7 is fixedly mounted inside the ball rolling mechanism 4, which cooperates with the granulation mechanism 5 to spray and granulate zirconia; It is worth noting that zirconium oxide powder is first added to the granulating mechanism 5, and the transmission base 1 drives the ball rolling mechanism 4 to rotate, while driving the spray mechanism 7 to rotate synchronously. During the rotation process, the spray mechanism 7 sprays the binder solution into the granulating mechanism 5 to wet and knead the zirconium oxide powder, causing the powder to agglomerate and form initial bead nuclei. The formed bead nuclei gradually fall into the ball rolling mechanism 4 under the action of gravity and the rotation of the spray mechanism 7; Among them, after the zirconium oxide powder is added to the rubbing mechanism 5, the transmission base 1 drives the rolling ball mechanism 4 to rotate, and synchronously drives the spray mechanism 7 to rotate. The spray mechanism evenly sprays the binder solution during the rotation process, so that the zirconium oxide powder can achieve efficient agglomeration under the synergistic effect of dynamic wetting and kneading, so that the liquid is evenly distributed and continuously wetting, avoiding local over-wetting or dry powder accumulation, and improving the nucleation efficiency of the initial bead nucleus. At the same time, the rotational motion of the spray mechanism 7 enhances the shearing and flipping effect on the powder, forming initial bead nuclei with narrow particle size distribution and high sphericity.

[0022] The bead core that falls into the rolling ball mechanism 4 rotates continuously with it. Under the combined action of centrifugal force and rolling friction, it continuously absorbs the scattered zirconium oxide powder around it and grows evenly layer by layer. Through repeated rolling and compaction, the bead core gradually densifies and finally forms spherical beads with a compact structure and uniform particle size.

[0023] Among them, the initial bead core that falls into the rolling ball mechanism 4 is affected by the combined influence of centrifugal force and rolling friction under the action of continuous rotation, and presents periodic rolling motion in the cavity. During this process, the bead core continuously absorbs the free-flowing zirconia powder around it, and realizes uniform coating and compaction layer by layer through repeated rolling, which effectively promotes the close arrangement between particles and improves the structural density and mechanical strength of the beads. At the same time, the dynamic rolling process avoids adhesion and irregular aggregation between particles, ensuring that the final beads have good sphericity and uniform particle size distribution.

[0024] The particle rolling mechanism 5 includes an atomizing cylinder 51, which is installed at the lower end of the mist pipe 6. A feeding pipe 52 is provided at the upper end of the atomizing cylinder 51, and a plurality of multi-layered rolling blades 53 distributed in an annular array are provided on the inner wall of the atomizing cylinder 51.

[0025] The outer surface of the rubbing sheet 53 is provided with a plurality of ribs 54 distributed at equal intervals, and the rubbing sheet 53 is in an arc-shaped triangle shape. A plurality of leakage holes 55 are opened on one side of the outer surface of the rubbing sheet 53.

[0026] Among them, the zirconium oxide powder first falls into the atomizing tube 51 through the feeding tube 52, and then the powder falls onto the surface of the rubbing sheet 53. Figure 8 As shown in the shape, after the powder falls onto the surface of the rubbing sheet 53, the spray mechanism 7 sprays the binder solution onto the powder on the surface of the rubbing sheet 53. The atomized binder solution soaks the zirconium oxide powder, and the spray mechanism 7 rotates and contacts the surface of the rubbing sheet 53 to form bead nuclei. Some of the bead nuclei fall through the leak holes 55 to the upper part of the next layer of the rubbing sheet 53 and are continuously kneaded to make the bead nuclei compact. The ribs 54 are used to prevent the bead nuclei from falling directly into the interior of the rolling ball mechanism 4.

[0027] Wherein, rubbing film 53 adopts as Figure 8The specific structural design shown can effectively guide the distribution of powder and promote local aggregation. At this time, the spray mechanism 7 sprays the atomized binder solution onto the surface of the wiper 53 during the rotation process, so that the zirconium oxide powder is evenly wetted. The rotation of the spray mechanism 7 forms a dynamic contact with the wiper surface, generating shearing and kneading effects, which promote the rapid agglomeration of the wetted powder and form initial bead nuclei. The formed bead nuclei move forward under the rolling action of the rubbing sheet, and some of those that meet the size standards fall into the next layer of rubbing sheets through the leak holes 55 on the rubbing sheets 53 to continue to be rubbed and coated, achieving step-by-step growth and initial densification. The ribs 54 set in the area of ​​the rubbing sheets 53 play a limiting and screening role, preventing particles that are not fully nucleated or are too small to fall into the rolling ball mechanism 4 below too early, ensuring that only beads with stable structures can enter the subsequent growth stage. The multi-stage rubbing structure is combined with atomization spraying and rubbing to improve the sphericity and initial strength of the bead nuclei.

[0028] The spray mechanism 7 includes a central axis tube 71, and a plurality of double-layer conical frames 74 distributed at equal intervals are provided on the upper portion of the outer surface of the central axis tube 71. A plurality of leakage grooves 75 distributed in a circular array are opened inside the double-layer conical frame 74, and a plurality of rubbing blocks 76 distributed in a circular array are provided inside the double-layer conical frame 74.

[0029] A spray ring 73 is provided on the outer surface of the central axis tube 71 and between the two double-layer cone frames 74 , and a spiral sheet 72 is provided on the outer surface of the spray ring 73 . The spiral sheet 72 is in the shape of an inverted cone spiral.

[0030] It is worth noting that the rotation of the central axis tube 71 drives the spray ring 73 to rotate, and the spray ring 73 is provided with a spray pipe connected to the inside of the mist pipe 6. The binder solution can be sprayed to the zirconium oxide powder in an all-round way through the material pipe and the spray ring 73, and the spiral piece 72 is provided in a Figure 12 The spiral shape shown in FIG. 1 is a spiral shape, and an air duct is provided inside the spiral piece 72 , and the air duct extends to the inside of the mist pipe 6 . The spiral piece 72 sprays air to guide the adhesive solution sprayed by the spray ring 73 to mix with the powder.

[0031] The double-layer cone frame 74 is supported on the outer surface of the rubbing sheet 53 , and the rubbing block 76 is in contact with the surface of the rubbing sheet 53 .

[0032] Among them, as the central axis tube 71 rotates, the double-layer cone frame 74 will be driven to rotate, and the double-layer cone frame 74 is a double-layer structure used to clamp the surface of the rubbing sheet 53. The rotation of the central axis tube 71 will cause the rubbing block 76 to rotate as well, and the rubbing block 76 will come into contact with the rubbing sheet 53. As the rubbing block 76 rotates, the zirconium oxide powder soaked on the surface of the rubbing sheet 53 is rubbed, and the rubbing block 76 is made of rubber material, which promotes the rubbing of the zirconium oxide powder into bead cores, so that the zirconium oxide beads have compact bead cores when they are initially produced.

[0033] The rotation of the central axis tube 71 drives the spray ring 73 to rotate synchronously, so as to realize the all-round spraying of the zirconium oxide powder. The spray ring 73 is provided with a spray pipe inside, which is connected to the mist pipe 6 to ensure that the binder solution can be evenly dispersed and fully wet the powder. The rotation of the central axis tube 71 also drives the movement of the double-layer cone frame 74. The double-layer cone frame 74 adopts a double-layer structure design, which can fit tightly to the surface of the rubbing piece 53. As it rotates, the rubber rubbing block 76 rotates accordingly, constantly kneading the soaked zirconium oxide powder. The unique properties of the rubber material can provide sufficient friction without causing excessive wear on the powder, thereby prompting the zirconium oxide powder to gradually agglomerate to form a compact bead core, and the formation of high-density bead cores is achieved in the initial production stage of the zirconium oxide beads.

[0034] Embodiment 2: This embodiment provides a further technical solution for the wave rolling component 41 in the ball rolling mechanism 4.

[0035] The ball rolling mechanism 4 includes a wave rolling assembly 41 , which includes a sleeve rod 412 and an outer cylinder 411 . A cone hopper 413 is provided on the outer surface of the sleeve rod 412 , and the cone hopper 413 is funnel-shaped.

[0036] The outer surface of the cone hopper plate 413 is provided with a wave plate 414, and the wave plate 414 is in the shape of a wave ring. The wave plate 414 is fixedly mounted on the inner wall of the outer cylinder 411, and the outer cylinder 411 is rotatably placed on the upper end of the rotating support plate 3. The sleeve rod 412 is connected to the transmission end inside the transmission base 1, and the central axis tube 71 is fixedly mounted inside the sleeve rod 412.

[0037] It is worth noting that when the zirconia bead core falls into the outer cylinder 411, the rotation of the sleeve rod 412 will drive the cone hopper plate 413 to rotate, and the cone hopper plate 413 will drive the wave plate 414 to rotate. The cone hopper plate 413 is set in a funnel shape, and the wave plate 414 is in a wave ring shape. The two are spliced ​​together and installed at an angle inside the outer cylinder 411, so that when the outer cylinder 411 rotates, the bead core first rolls on the surface of the wave plate 414 and then part of it falls into the surface of the cone hopper plate 413 and rolls, making the rolling trajectory of the bead core on the surface of the cone hopper plate 413 and the wave plate 414 unpredictable.

[0038] Among them, when the zirconia bead core falls into the outer cylinder 411, the sleeve rod 412 drives the cone bucket plate 413 and the wave plate 414 to rotate synchronously. The cone bucket plate 413 adopts a funnel-shaped design, and the wave plate 414 is a wave ring structure. After the two are spliced, they are installed obliquely inside the outer cylinder to form a composite curved rolling bed. The bead core first enters the surface of the wave plate, and jumps, rolls and slides between the uneven crests and troughs, generating strong dynamic disturbances. Subsequently, some of the bead cores are gradually transferred to the surface of the cone bucket plate, and move toward the periphery along a spiral trajectory under the guidance of its inclined surface, continuously absorbing the surrounding free powder to achieve layer-by-layer growth.

[0039] Due to the difference in geometric shapes and inclined installation methods between the conical bucket plate 413 and the wavy plate 414, the rolling path of the bead nucleus on the surfaces of the two is highly nonlinear and unpredictable. The complex motion trajectory breaks the regularity of particle movement in the traditional rolling process and avoids the problems of local excessive friction or uneven coating. At the same time, irregular collisions and rolling help to trim the particle shape, improve sphericity, promote the densification of the internal structure, and enhance the uniformity and stability of the bead nucleus growth.

[0040] Embodiment 3: This embodiment provides a further technical solution for the spiral rolling component 42 in the ball rolling mechanism 4.

[0041] The ball rolling mechanism 4 includes a spiral tumbling assembly 42, which includes a connecting shaft 424 and a cylinder 421. The outer surface of the connecting shaft 424 is provided with a cone disk 422, and the cone disk 422 is fixedly mounted on the inner wall of the cylinder 421, and the cylinder 421 is rotatably placed on the upper end of the rotating support disk 3. The outer surface of the cone disk 422 is provided with spiral ribs 423 distributed in a spiral pattern. The connecting shaft 424 is connected to the transmission end inside the transmission base 1, and the central axis tube 71 is fixedly mounted inside the connecting shaft 424.

[0042] It is worth noting that when the bead core falls into the interior of the cylinder 421, the rotation of the connecting shaft 424 will drive the cone disk 422 to rotate. The cone disk 422 is in an inverted cone shape, and the surface of the cone disk 422 is provided with spiral ribs 423. The spiral ribs 423 are spirally distributed on the surface of the cone disk 422, so that the bead core can roll along the route trajectory of the spiral ribs 423 as the cone disk 422 rotates.

[0043] When the bead core falls into the cylinder 421, the connecting shaft 424 drives the inverted conical disk 422 to rotate. The surface of the disk 422 is provided with spiral ribs 423 distributed in a spiral pattern, forming a continuous guide channel. During the rotation process, the bead core moves from the center area of ​​the disk 422 to the periphery under the action of centrifugal force and is effectively guided by the spiral ribs 423, rolling smoothly along the predetermined spiral trajectory. This achieves orderly movement of the bead core and controllable path, avoiding the problems of disordered particle jumping, accumulation or retention in the traditional spheronization process. The inverted cone design combined with the spiral rib 423 structure prolongs the residence time of the bead core in the growth zone, allowing it to continuously and evenly absorb the surrounding zirconium oxide fine powder during the rolling process, achieving layer-by-layer densification growth. The spiral path not only enhances the separation effect between particles and reduces adhesion and agglomeration, but also dynamically modifies the surface of the bead core through moderate friction, thereby improving the sphericity and surface smoothness, and obtaining zirconium oxide beads with a narrow particle size distribution, high roundness, and compact structure.

[0044] Embodiment 4: This embodiment provides a further technical solution for the tilting and rolling component 43 in the ball rolling mechanism 4.

[0045] The ball rolling mechanism 4 includes a tilting and rolling component 43, which includes a toggle plate 434, a cover tube 431 and a shaft 432. A tilting plate 433 is arranged between the outer surface of the shaft 432 and the inner wall of the cover tube 431, and the tilting plate 433 is placed at an inclined angle. The bottom wall of the tilting plate 433 is provided with a plurality of protrusions 435 distributed in a circular array. The toggle plate 434 is fixedly installed on the upper end of the rotating support plate 3, and the toggle plate 434 is in contact with the protrusions 435. The cover tube 431 is rotatably placed on the upper end of the rotating support plate 3. The shaft 432 is connected to the transmission end inside the transmission base 1, and the central axis tube 71 is fixedly installed inside the shaft 432.

[0046] It is worth noting that after the column core falls onto the surface of the inclined disk 433, the rotation of the inclined disk 433 will drive the protrusion 435 to rotate, and the paddle piece 434 will contact the protrusion 435. As the inclined disk 433 rotates, the paddle piece 434 can continuously hit the surface of the protrusion 435. By hitting the protrusion 435, the bead core on the surface of the inclined disk 433 will shake slightly, and the inclined angle of the inclined disk 433 is 0 to 5 degrees. As the inclined disk 433 rotates, the accumulated beads can be caused to roll on the surface of the inclined disk 433.

[0047] Among them, after the bead core falls onto the surface of the inclined disk 433, as it rotates, the protrusion 435 fixed on the disk body rotates synchronously and comes into periodic contact with the stationary paddle 434. Every time the protrusion 435 passes the paddle, it is struck. The impact force is transmitted to the entire surface of the inclined disk 433 through the disk body, causing local micro-vibration and causing the bead core attached thereto to shake slightly. The inclined disk 433 is installed at a small angle of 0 to 5 degrees. While ensuring that the bead core moves slowly outward, it avoids excessive rolling or insufficient residence time due to excessive inclination, thus solving the problems of particle accumulation, bridging and uneven movement that are prone to occur during low-inclination rolling. Continuous mechanical tapping induces vibration, loosens the aggregation area, and encourages all beads to fully participate in the rolling and coating process, significantly improving the uniformity of powder distribution. At the same time, repeated tumbling with the assistance of vibration helps to trim the shape of the beads, improve sphericity, and enhance particle density.

[0048] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A granulation tower for producing zirconium oxide beads, comprising a rotating support plate (3), wherein a transmission base (1) is provided at the lower end of the rotating support plate (3), characterized in that: A ball rolling mechanism (4) is rotatably mounted on the upper end of the transmission base (1), a mist pipe (6) is provided on one side of the transmission base (1), and a granulation mechanism (5) is provided at the bottom of the mist pipe (6), the granulation mechanism (5) is located directly above the ball rolling mechanism (4), a baffle (2) is provided between the ball rolling mechanism (4) and the granulation mechanism (5), and the baffle (2) is rotatably mounted on one side of the mist pipe (6), and a spray mechanism (7) is fixedly mounted inside the ball rolling mechanism (4) for cooperating with the granulation mechanism (5) to spray and granulate zirconium oxide; The spray mechanism (7) comprises a central axis tube (71), and a plurality of double-layered conical frames (74) distributed at equal intervals are provided on the upper portion of the outer surface of the central axis tube (71), a plurality of leakage troughs (75) distributed in an annular array are provided inside the double-layered conical frames (74), and a plurality of rubbing blocks (76) distributed in an annular array are provided inside the double-layered conical frames (74).

2. A granulation tower for producing zirconia beads according to claim 1, characterized in that: The particle rolling mechanism (5) comprises an atomizing barrel (51), which is mounted at the lower end of the mist pipe (6). A feed pipe (52) is provided at the upper end of the atomizing barrel (51), and a plurality of multi-layered rolling blades (53) distributed in an annular array are provided on the inner wall of the atomizing barrel (51).

3. A granulation tower for producing zirconia beads according to claim 2, characterized in that: The outer surface of the rubbing sheet (53) is provided with a plurality of rib protrusions (54) distributed at equal intervals, and the rubbing sheet (53) is in an arc-shaped triangle shape. A plurality of leakage holes (55) are opened on one side of the outer surface of the rubbing sheet (53).

4. A granulation tower for producing zirconia beads according to claim 2, characterized in that: The double-layer cone frame (74) is supported on the outer surface of the rubbing sheet (53), and the rubbing block (76) is in contact with the surface of the rubbing sheet (53).

5. A granulation tower for producing zirconia beads according to claim 4, characterized in that: A spray ring (73) is provided on the outer surface of the central axis tube (71) and located between the two double-layer cone frames (74), and a spiral sheet (72) is provided on the outer surface of the spray ring (73), wherein the spiral sheet (72) is in the shape of an inverted cone spiral.

6. The granulation tower for producing zirconia beads according to claim 1, characterized in that: The ball rolling mechanism (4) comprises a wave rolling assembly (41), and the wave rolling assembly (41) comprises a sleeve rod (412) and an outer cylinder (411). The outer surface of the sleeve rod (412) is provided with a cone hopper disc (413), and the cone hopper disc (413) is funnel-shaped.

7. A granulation tower for producing zirconia beads according to claim 6, characterized in that: The outer surface of the cone hopper disc (413) is provided with a wave plate (414), and the wave plate (414) is in the shape of a wave ring. The wave plate (414) is fixedly mounted on the inner wall of the outer cylinder (411), and the outer cylinder (411) is rotatably placed on the upper end of the rotating support disc (3). The sleeve rod (412) is connected to the transmission end inside the transmission base (1), and the central axis tube (71) is fixedly mounted inside the sleeve rod (412).

8. The granulation tower for producing zirconia beads according to claim 1, characterized in that: The ball rolling mechanism (4) includes a spiral tumbling assembly (42), and the spiral tumbling assembly (42) includes a connecting shaft (424) and a cylinder (421). The outer surface of the connecting shaft (424) is provided with a cone disk (422), and the cone disk (422) is fixedly mounted on the inner wall of the cylinder (421). The cylinder (421) is rotatably placed on the upper end of the rotating support disk (3). The outer surface of the cone disk (422) is provided with spiral ribs (423) distributed in a spiral pattern. The connecting shaft (424) is connected to the transmission end inside the transmission base (1), and the central axis tube (71) is fixedly mounted inside the connecting shaft (424).

9. The granulation tower for producing zirconia beads according to claim 1, characterized in that: The ball rolling mechanism (4) includes a tilting and rolling assembly (43), which includes a toggle plate (434), a cover tube (431) and a shaft (432). An inclined disk (433) is provided between the outer surface of the shaft (432) and the inner wall of the cover tube (431), and the inclined disk (433) is placed at an inclined angle. The bottom wall of the inclined disk (433) is provided with a plurality of protrusions (435) distributed in a ring array. The toggle plate (434) is fixedly mounted on the upper end of the rotating support plate (3), and the toggle plate (434) contacts the protrusions (435). The cover tube (431) is rotatably placed on the upper end of the rotating support plate (3). The shaft (432) is connected to the transmission end inside the transmission base (1), and the central axis tube (71) is fixedly mounted inside the shaft (432).

10. A molding method for producing zirconia beads, using the granulation tower for producing zirconia beads according to any one of claims 1 to 9, characterized in that: The specific molding method of zirconia beads is as follows: Step 1: Add zirconium oxide powder into the granulating mechanism (5); the transmission base (1) drives the ball rolling mechanism (4) to rotate, and at the same time drives the spray mechanism (7) to rotate synchronously; the spray mechanism (7) sprays the binder solution into the granulating mechanism (5) during the rotation process, wets and kneads the zirconium oxide powder, promotes the powder to agglomerate and form initial bead nuclei; the formed bead nuclei gradually fall into the ball rolling mechanism (4) under the action of gravity and the rotation of the spray mechanism (7); Step 2: The bead core falls into the rolling ball mechanism (4) and rotates continuously. Under the combined action of centrifugal force and rolling friction, it continuously absorbs the zirconia powder scattered around to form spherical beads.

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