A granulation tower and forming method for zirconium oxide bead production

Abstract

The application discloses a granulating tower for zirconia bead production and a forming method, relates to the technical field of the granulating tower, and comprises a rotating support disc, the lower end of the rotating support disc is provided with a transmission base, the upper end of the transmission base is rotationally installed with a rolling ball mechanism, one side of the transmission base is provided with a mist pipe, and the bottom of the mist pipe is provided with a rubbing granulating mechanism. After zirconia powder is added into the rubbing granulating mechanism, the transmission base drives the rolling ball mechanism to rotate, and synchronously drives the spraying mechanism to rotate, the spraying mechanism uniformly sprays the binder solution in the rotating process, the zirconia powder realizes efficient agglomeration under the synergistic effect of dynamic wetting and rubbing, the uniform distribution and continuous wetting of the liquid are realized, local over-wetting or dry powder accumulation is avoided, the nucleation efficiency of the initial bead core is improved, and meanwhile, the rotating movement of the spraying mechanism enhances the shearing and turning effect on the powder, so that the initial bead core with narrow particle size distribution and high sphericity is formed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of prilling tower, in particular to a prilling tower for zirconia bead production and a forming method. BACKGROUND

[0002] For example, the patent with the patent number CN119869336A and the patent name Energy-saving and environment-friendly spray prilling tower for processing of alumina ceramic material, including the bottom plate, the upper end of the bottom plate is fixedly installed with the mixing barrel, the outer side of the mixing barrel is spirally wound with the heating pipe, the inner cavity of the mixing barrel is provided with the stirring assembly, the rear end of the mixing barrel is provided with the prilling tower box, the lower end of the prilling tower box is fixedly connected with the material collecting hopper, by starting the driving motor, the output end of the driving motor drives the first stirring shaft to rotate, the first stirring shaft rotates to drive the main cone gear to rotate, the main cone gear rotates to drive the transmission cone gear to rotate, and through the cooperation of the from cone gear, the second stirring shaft can be conveniently reversed, and then a plurality of stirring rods can be used to fully stir the materials in the mixing barrel, so that the problem of unqualified spherical particle quality and size caused by uneven mixing of the materials can be avoided.

[0003] The prilling tower has the problems of local over-wetting, uneven agglomeration, wide particle size distribution of the core, and poor sphericity, which leads to unstable quality of the initial bead core, and further affects the subsequent growth process. In addition, during the rolling or rolling growth stage, the bead core usually moves along a fixed trajectory, the movement path is single, uneven friction, uneven powder supply and other phenomena are easy to occur, which leads to uneven thickness of the coating layer, loose internal structure, and many surface burrs, causing adhesion and caking between particles, and part of the particles are damaged due to repeated friction, and the other areas may not be fully coated due to insufficient contact. Therefore, the present application provides a prilling tower for zirconia bead production and a forming method to meet the needs. SUMMARY

[0004] The present application aims to provide a prilling tower for zirconia bead production and a forming method, which can effectively solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a prilling tower for zirconia bead production, comprising a rotating support disc, a transmission base is arranged at the lower end of the rotating support disc, a rolling ball mechanism is rotatably installed at the upper end of the transmission base, a mist pipe is arranged on one side of the transmission base, and a rubbing mechanism is arranged at the bottom of the mist pipe, the rubbing mechanism is located directly above the rolling ball mechanism, a baffle is arranged between the rolling ball mechanism and the rubbing mechanism, the baffle is rotatably installed on one side of the mist pipe, and a spraying mechanism for spraying and prilling zirconia in cooperation with the rubbing mechanism is fixedly installed in the rolling ball mechanism.

[0006] The spray mechanism comprises a central shaft pipe, and a plurality of double-layered conical frames are arranged on the outer surface of the central shaft pipe in equal intervals.

[0007] The granulating mechanism comprises an atomizing cylinder, the atomizing cylinder is installed at the lower end of the mist pipe, the upper end of the atomizing cylinder is provided with a feeding pipe, and the inner wall of the atomizing cylinder is provided with a plurality of multi-layered ring arrayed rubbing sheets.

[0008] The outer surface of the rubbing sheet is provided with a plurality of rib protrusions arranged in equal intervals, and the rubbing sheet is in the shape of an arc triangle; a plurality of leakage holes are formed in one side of the outer surface of the rubbing sheet.

[0009] The double-layered conical frame is arranged on the outer surface of the rubbing sheet, and the rubbing block is in contact with the surface of the rubbing sheet.

[0010] The outer surface of the central shaft pipe and between the two double-layered conical frames is provided with a spray ring, and the outer surface of the spray ring is provided with a spiral sheet in the shape of an inverted conical spiral.

[0011] The rolling ball mechanism comprises a wave rolling assembly, and the wave rolling assembly comprises a sleeve rod and an outer cylinder; the outer surface of the sleeve rod is provided with a conical hopper disc in the shape of a funnel.

[0012] The outer surface of the conical hopper disc is provided with a wave sheet in the shape of a wave ring; the wave sheet is fixedly installed on the inner wall of the outer cylinder; the outer cylinder is rotatably arranged on the upper end of the rotating support disc; the sleeve rod is connected with the transmission end in the transmission base; and the central shaft pipe is fixedly installed in the sleeve rod.

[0013] The rolling ball mechanism comprises a spiral rolling assembly, and the spiral rolling assembly comprises a connecting shaft and a cylinder; the outer surface of the connecting shaft is provided with a conical disc; the conical disc is fixedly installed on the inner wall of the cylinder; the cylinder is rotatably arranged on the upper end of the rotating support disc; the outer surface of the conical disc is provided with spiral ribs arranged in a spiral manner; the connecting shaft is connected with the transmission end in the transmission base; and the central shaft pipe is fixedly installed in the connecting shaft.

[0014] The rolling ball mechanism comprises an inclined rolling assembly, and the inclined rolling assembly comprises a pushing sheet, a cover cylinder and a shaft rod; an inclined disc is arranged between the outer surface of the shaft rod and the inner wall of the cover cylinder; the inclined disc is arranged at an inclined angle; the bottom wall of the inclined disc is provided with a plurality of protrusions arranged in a ring array; the pushing sheet is fixedly installed on the upper end of the rotating support disc and is in contact with the protrusions; the cover cylinder is rotatably arranged on the upper end of the rotating support disc; the shaft rod is connected with the transmission end in the transmission base; and the central shaft pipe is fixedly installed in the shaft rod.

[0015] The application also provides a forming method for producing zirconia beads.

[0016] Step one, the zirconia powder is added to the granulating mechanism, the transmission base drives the ball mechanism to rotate, and the spraying mechanism is synchronously rotated, the spraying mechanism sprays the binder solution into the granulating mechanism during rotation, the zirconia powder is wetted and kneaded, the powder is aggregated and the initial bead core is formed, the formed bead core gradually falls into the ball mechanism under the action of gravity and the rotation of the spraying mechanism;

[0017] Step two, the bead core falling into the ball mechanism continuously rotates under the combined action of centrifugal force and rolling friction, and continuously adsorbs the surrounding scattered zirconia powder to form spherical beads.

[0018] In summary, the technical effects and advantages of the present application are:

[0019] 1. In the present application, the zirconia powder is added to the granulating mechanism, the transmission base drives the ball mechanism to rotate, and the spraying mechanism is synchronously rotated, the spraying mechanism uniformly sprays the binder solution during rotation, the zirconia powder is efficiently aggregated under the synergistic action of dynamic wetting and kneading, the uniform distribution and continuous wetting of the liquid are achieved, local over-wetting or dry powder accumulation is avoided, the nucleation efficiency of the initial bead core is improved, and the rotation of the spraying mechanism enhances the shearing and turning effect on the powder, forming an initial bead core with narrow particle size distribution and high sphericity.

[0020] 2. In the present application, the initial bead core falling into the ball mechanism is continuously rotated, is affected by the centrifugal force and the rolling friction, and presents a periodic tumbling motion in the cavity, in this process, the bead core continuously adsorbs the surrounding free-flowing zirconia powder, and realizes uniform coating and compaction layer by layer through repeated rolling, effectively promoting the close arrangement between particles, improving the structural density and mechanical strength of the beads, at the same time, the dynamic rolling process avoids the adhesion and irregular aggregation between particles, ensuring that the final beads have good sphericity and uniform particle size distribution.

[0021] 3. In the present application, the geometric shape difference and inclined installation method of the conical hopper disc and the wave sheet, the rolling path of the bead core on the surface of the two presents high nonlinearity and unpredictability, complex motion trajectory, breaking the regularity of particle motion in the traditional rounding process, avoiding the problems of local excessive friction or uneven coating; at the same time, irregular collision and tumbling help to trim the particle shape, improve the sphericity, and promote the densification of the internal structure, enhance the uniformity and stability of the bead core growth. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the accompanying drawings in the following description only only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without creative labor.

[0023] Figure 1 It is a first perspective view of the prilling tower;

[0024] Figure 2 It is a second perspective view of the prilling tower;

[0025] Figure 3 It is a third perspective view of the prilling tower;

[0026] Figure 4 It is a fourth perspective view of the prilling tower;

[0027] Figure 5 It is a first perspective view of the prilling tower;

[0028] Figure 6 It is a second perspective view of the prilling tower;

[0029] Figure 7 It is a perspective view of the rubbing mechanism;

[0030] Figure 8 It is a perspective view of the rubbing mechanism;

[0031] Figure 9 It is a perspective view of the spraying mechanism;

[0032] Figure 10 It is a perspective view of the double-layer cone frame;

[0033] Figure 11 It is a perspective view of the double-layer cone frame;

[0034] Figure 12 It is a perspective view of the spiral sheet;

[0035] Figure 13 It is a perspective view of the inclined rolling assembly;

[0036] Figure 14 It is a perspective view of the inclined rolling assembly;

[0037] Figure 15 It is a perspective view of the wave rolling assembly;

[0038] Figure 16 A perspective view of the connection structure of the wave rolling assembly;

[0039] Figure 17 A perspective view of the connection structure of the spiral rolling assembly;

[0040] Figure 18 A perspective view of the connection structure of the spiral rolling assembly.

[0041] In the figure: 1, transmission base; 2, baffle; 3, rotating support disc; 4, rolling ball mechanism; 41, wave rolling assembly; 411, outer cylinder; 412, sleeve rod; 413, conical disc; 414, wave sheet; 42, spiral rolling assembly; 421, cylinder; 422, conical disc; 423, spiral rib; 424, connecting shaft; 43, inclined rolling assembly; 431, cover cylinder; 432, shaft rod; 433, inclined disc; 434, actuating sheet; 435, protrusion; 5, rubbing mechanism; 51, atomizing cylinder; 52, feeding pipe; 53, rubbing sheet; 54, rib protrusion; 55, leakage hole; 6, mist pipe; 7, spraying mechanism; 71, central shaft pipe; 72, spiral sheet; 73, spraying ring; 74, double-layer conical frame; 75, leakage groove; 76, rubbing block. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0043] Embodiment one, refer to Figures 1 to 18 The granulation tower for zirconia bead production shown in the figure comprises a rotating support disc 3, the lower end of the rotating support disc 3 is provided with a transmission base 1, the upper end of the transmission base 1 is rotatably installed with a rolling ball mechanism 4, one side of the transmission base 1 is provided with a mist pipe 6, and the bottom of the mist pipe 6 is provided with a rubbing mechanism 5, the rubbing mechanism 5 is located directly above the rolling ball mechanism 4, a baffle 2 is arranged between the rolling ball mechanism 4 and the rubbing mechanism 5, and the baffle 2 is rotatably installed on one side of the mist pipe 6, and the inside of the rolling ball mechanism 4 is fixedly installed with a spraying mechanism 7 cooperating with the rubbing mechanism 5 to spray and granulate the zirconia;

[0044] It is worth noting that firstly, the zirconia powder is added into the rubbing mechanism 5, the transmission base 1 drives the rolling ball mechanism 4 to rotate, and at the same time drives the spraying mechanism 7 to rotate synchronously, the spraying mechanism 7 sprays the binder solution into the rubbing mechanism 5 during the rotation process, wets and rubs the zirconia powder, promotes the powder to agglomerate and form the initial bead core, and the formed bead core gradually falls into the inside of the rolling ball mechanism 4 under the action of gravity and the rotation of the spraying mechanism 7;

[0045] Wherein, after the zirconia powder is added into the rolling mechanism 5, the transmission base 1 drives the rolling ball mechanism 4 to rotate, and synchronously drives the spraying mechanism 7 to rotate. The spraying mechanism uniformly sprays the binder solution during the rotation process, so that the zirconia powder realizes efficient agglomeration under the synergistic action of dynamic wetting and rubbing, and the uniform distribution and continuous wetting of the liquid are realized, avoiding local over-wetting or dry powder accumulation, improving the nucleation efficiency of the initial bead core, and the rotation of the spraying mechanism 7 enhances the shearing and turning effect on the powder, forming an initial bead core with narrow particle size distribution and high sphericity.

[0046] The bead core falling into the rolling ball mechanism 4 continuously adsorbs the surrounding scattered zirconia powder under the combined action of centrifugal force and rolling friction, and uniformly grows layer by layer. Through repeated rolling and compaction, the bead core gradually densifies, and finally forms a spherical bead with compact structure and uniform particle size.

[0047] Wherein, under the continuous rotation of the initial bead core falling into the rolling ball mechanism 4, the bead core is affected by the centrifugal force and the rolling friction, and presents a periodic tumbling motion in the cavity. In this process, the bead core continuously adsorbs the surrounding free-flowing zirconia powder, and realizes uniform coating and compaction layer by layer through repeated rolling, effectively promoting the close arrangement between particles, improving the structural density and mechanical strength of the bead, and at the same time, the dynamic rolling process avoids the adhesion and irregular aggregation between particles, ensuring that the final bead has good sphericity and uniform particle size distribution.

[0048] The rolling mechanism 5 includes an atomizing cylinder 51, which is installed at the lower end of the mist pipe 6. The upper end of the atomizing cylinder 51 is provided with a feeding pipe 52, and the inner wall of the atomizing cylinder 51 is provided with a plurality of multi-layered rolling sheets 53 arranged in a ring array.

[0049] The outer surface of the rolling sheet 53 is provided with a plurality of rib protrusions 54 arranged at equal intervals, and the rolling sheet 53 is in the shape of an arc triangle. A plurality of leakage holes 55 are formed on one side of the outer surface of the rolling sheet 53.

[0050] Wherein, the zirconia powder first falls into the atomizing cylinder 51 through the feeding pipe 52, and then falls onto the surface of the rolling sheet 53. Due to the design of the rolling sheet 53 in the shape of Figure 8 As shown in the figure, after the powder falls onto the surface of the rolling sheet 53, the spraying mechanism 7 sprays the binder solution onto the powder on the surface of the rolling sheet 53. The atomized binder solution wets the zirconia powder, and the rotation of the spraying mechanism 7 makes the zirconia powder form a bead core by contacting the surface of the rolling sheet 53. Part of the bead core falls onto the upper part of the next layer of rolling sheet 53 for continuous rubbing, so that the bead core is compacted. The rib protrusions 54 are arranged to block the bead core from directly falling into the inside of the rolling ball mechanism 4.

[0051] Wherein, the rolling sheet 53 adopts the shape asFigure 8 The specific structure design shown can effectively guide the powder distribution and promote local aggregation. At this time, the spraying mechanism 7 sprays the atomized binder solution to the surface of the rubbing sheet 53 during rotation, so that the zirconia powder is uniformly wetted. The rotating movement of the spraying mechanism 7 forms dynamic contact with the surface of the rubbing sheet, generating shearing and kneading action, which promotes the rapid agglomeration of the wetted powder and forms the initial bead nucleus;

[0052] The formed bead nucleus moves forward under the rolling action of the rubbing sheet. Part of the size meets the standard and falls through the leakage hole 55 on the rubbing sheet 53 to the next layer of rubbing sheet to continue to be kneaded and coated, realizing step-by-step growth and preliminary densification. The rib protrusion 54 arranged in the area of the rubbing sheet 53 plays a limiting and screening role, preventing insufficiently nucleated or undersized particles from falling prematurely into the rolling ball mechanism 4 below, ensuring that only the bead nucleus with stable structure can enter the subsequent growth stage. The multi-stage rubbing structure combined with atomized spraying and kneading improves the sphericity and initial strength of the bead nucleus.

[0053] The spraying mechanism 7 includes a central shaft pipe 71, and a plurality of double-layered conical frames 74 are arranged on the outer surface of the central shaft pipe 71 in equal intervals. The double-layered conical frames 74 are internally provided with a plurality of leakage grooves 75 arranged in a ring array, and a plurality of rubbing blocks 76 arranged in a ring array.

[0054] A spraying ring 73 is arranged on the outer surface of the central shaft pipe 71 between the two double-layered conical frames 74, and the outer surface of the spraying ring 73 is provided with a spiral blade 72 in the shape of an inverted conical spiral.

[0055] It is worth noting that the rotation of the central shaft pipe 71 will drive the rotation of the spraying ring 73, and the spraying ring 73 is internally provided with a material spraying pipe and a mist pipe 6 connected internally. The material pipe and the spraying ring 73 can fully spray the binder solution to the zirconia powder, and the spiral blade 72 arranged in the shape of a spiral. Figure 12 The internal part of the spiral blade 72 is provided with an air pipe that extends to the inside of the mist pipe 6, and the spiral blade 72 is used to guide the mixture of the binder solution and the powder sprayed by the spraying ring 73.

[0056] The double-layered conical frames 74 are clamped to the outer surface of the rubbing sheet 53, and the rubbing blocks 76 are in contact with the surface of the rubbing sheet 53.

[0057] The rotation of the central shaft pipe 71 will drive the rotation of the double-layered conical frames 74, and the double-layered conical frames 74 are double-layered structures for clamping to the surface of the rubbing sheet 53. The rotation of the central shaft pipe 71 will also drive the rotation of the rubbing blocks 76, which are in contact with the rubbing sheet 53. The rotation of the rubbing blocks 76 kneads the zirconia powder wetted on the surface of the rubbing sheet 53, and the rubbing blocks 76 are made of rubber material, which promotes the kneading of the zirconia powder into a bead nucleus, so that the zirconia bead has a compact bead nucleus in the initial production.

[0058] Wherein, through the rotation of the central shaft tube 71, the spray ring 73 is driven to rotate synchronously, realizing the all-round spraying of the zirconia powder. The spray ring 73 is internally provided with a spray pipe connected with the mist pipe 6, ensuring that the binder solution can be uniformly dispersed and fully wet the powder

[0059] The rotation of the central shaft tube 71 also drives the movement of the double-layer conical frame 74. The double-layer conical frame 74 is designed in a double-layer structure, which can closely fit the surface of the rubbing sheet 53 and rotate with it. The rubber rubbing block 76 rotates with it, continuously rubbing and wetting the zirconia powder. The unique properties of the rubber material can provide sufficient friction without causing excessive wear to the powder, thereby gradually agglomerating the zirconia powder to form a compact bead core. In the initial production stage of the zirconia bead, the formation of a high-density bead core is achieved.

[0060] Embodiment two, the embodiment provides a further technical solution of the wave rolling component 41 in the rolling ball mechanism 4.

[0061] The rolling ball mechanism 4 includes the wave rolling component 41, and the wave rolling component 41 includes a sleeve rod 412 and an outer cylinder 411. The outer surface of the sleeve rod 412 is provided with a conical hopper disc 413, and the conical hopper disc 413 is in the shape of a funnel.

[0062] The outer surface of the conical hopper disc 413 is provided with a wave sheet 414, and the wave sheet 414 is in the shape of a wave ring. The wave sheet 414 is fixedly installed on the inner wall of the outer cylinder 411, and the outer cylinder 411 is pivotally placed on the upper end of the rotating support disc 3. The sleeve rod 412 is connected with the transmission end inside the transmission base 1, and the central shaft tube 71 is fixedly installed inside the sleeve rod 412.

[0063] 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 rotation of the conical hopper disc 413, and the conical hopper disc 413 will drive the rotation of the wave sheet 414. The conical hopper disc 413 is in the shape of a funnel, and the wave sheet 414 is in the shape of a wave ring. They are spliced together and installed in the outer cylinder 411 in an inclined manner. When the outer cylinder 411 rotates, the bead core first rolls on the surface of the wave sheet 414 and then falls onto the surface of the conical hopper disc 413, so that the trajectory of the bead core rolling on the surfaces of the conical hopper disc 413 and the wave sheet 414 cannot be predicted.

[0064] When the zirconium oxide bead core falls into the outer cylinder 411, the sleeve rod 412 drives the conical disc 413 and the wave sheet 414 to rotate synchronously. The conical disc 413 is designed in a funnel shape, and the wave sheet 414 is in a wave ring structure. After splicing, they are installed obliquely in the inner part of the outer cylinder to form a composite curved rolling bed. The bead core first enters the wave sheet surface and jumps, rolls and slips between the uneven wave peaks and troughs to generate strong dynamic disturbance. Then, part of the bead core gradually shifts to the conical disc surface and moves outward along the spiral track under the guidance of the inclined surface, continuously adsorbs the surrounding free powder, and realizes layer-by-layer growth.

[0065] Due to the geometric shape difference and oblique installation of the conical disc 413 and the wave sheet 414, the rolling path of the bead core on the surfaces of the two presents high nonlinearity and unpredictability, and a complex motion trajectory, which breaks the regularity of particle motion in the traditional rolling process, avoids the problems of local excessive friction or uneven coating; at the same time, irregular collision and rolling help to trim the particle shape, improve the sphericity, and promote the densification of the internal structure, thereby enhancing the uniformity and stability of the bead core growth.

[0066] In this embodiment, a further technical solution of the spiral rolling assembly 42 in the rolling ball mechanism 4 is provided.

[0067] The rolling ball mechanism 4 comprises a spiral rolling assembly 42, and the spiral rolling assembly 42 comprises a connecting shaft 424 and a cylinder 421. The outer surface of the connecting shaft 424 is provided with a conical disc 422, and the conical disc 422 is fixedly installed on the inner wall of the cylinder 421. The cylinder 421 is pivotally arranged on the upper end of the rotating support disc 3. The outer surface of the conical disc 422 is provided with spiral ribs 423 distributed in a spiral manner. The connecting shaft 424 is connected with the transmission end in the transmission base 1, and the central shaft pipe 71 is fixedly installed in the inside of the connecting shaft 424.

[0068] It is worth noting that when the bead core falls into the inside of the cylinder 421, the conical disc 422 will be driven to rotate along with the rotation of the connecting shaft 424. The conical disc 422 is in an inverted conical shape, and the surface of the conical disc 422 is provided with the spiral ribs 423 distributed in a spiral manner. The spiral ribs 423 enable the bead core to roll along the trajectory of the spiral ribs 423 along with the rotation of the conical disc 422.

[0069] When the bead core falls into the inside of the cylinder 421, the connecting shaft 424 drives the inverted conical conical disc 422 to rotate. The surface of the conical disc 422 is provided with the spiral ribs 423 distributed in a spiral manner to form a continuous flow guide channel. In the rotating process, the bead core moves from the central area of the conical disc 422 to the periphery under the action of centrifugal force and is effectively guided by the spiral ribs 423 to roll smoothly along the predetermined spiral track, realizing the ordering and controllability of the bead core motion, and avoiding the problems of disordered jumping, accumulation or stagnation of particles in the traditional rolling process.

[0070] And the inverted cone design combined with the spiral rib 423 structure, prolongs the residence time of the bead core in the growth zone, so that it continues to adsorb the surrounding zirconia fine powder during rolling, realizes the layer-by-layer densification growth, and the spiral path not only enhances the separation effect between particles, reduces the adhesion and aggregation, but also dynamically shapes the surface of the bead core through moderate friction, improves the sphericity and surface finish, and obtains zirconia beads with narrow particle size distribution, high roundness and compact structure.

[0071] In this embodiment, further technical solutions of the inclined rolling assembly 43 in the rolling ball mechanism 4 are provided.

[0072] The rolling ball mechanism 4 comprises an inclined rolling assembly 43, the inclined rolling assembly 43 comprises a poking piece 434, a cover cylinder 431 and a shaft rod 432, an inclined disc 433 is arranged between the outer surface of the shaft rod 432 and the inner wall of the cover cylinder 431, and the inclined disc 433 is placed at an inclined angle, the bottom wall of the inclined disc 433 is provided with a plurality of convex blocks 435 arranged in a ring array, the poking piece 434 is fixedly installed at the upper end of the rotating support disc 3 and is in contact with the convex blocks 435, the cover cylinder 431 is rotatably placed at the upper end of the rotating support disc 3, the shaft rod 432 is connected with the transmission end inside the transmission base 1, and the middle shaft pipe 71 is fixedly installed inside the shaft rod 432.

[0073] It is worth noting that after the column core falls onto the surface of the inclined disc 433, the convex blocks 435 will be rotated along with the rotation of the inclined disc 433, and the poking piece 434 is in contact with the convex blocks 435, so that the poking piece 434 can continuously hit the surface of the convex blocks 435 along with the rotation of the inclined disc 433, and the column core on the surface of the inclined disc 433 is slightly shaken by knocking the convex blocks 435, and the inclined disc 433 is placed at an angle of 0 to 5 degrees, so that the accumulated beads can roll on the surface of the inclined disc 433 along with the rotation of the inclined disc 433.

[0074] Wherein, after the bead core falls onto the surface of the inclined disc 433, the convex blocks 435 fixed on the disc body rotate synchronously along with the rotation of the inclined disc 433, and periodically contact the stationary poking piece 434, and the convex blocks 435 will be knocked once every time they pass through the poking piece, and the impact force is conducted to the entire surface of the inclined disc 433 through the disc body, causing local micro-vibration and causing the bead core attached thereto to slightly shake, and the inclined disc 433 is installed at a small angle of 0~5 degrees, which ensures the slow outward movement of the bead core and avoids the problem of too large inclination angle leading to too fast rolling or insufficient residence time, solving the problems of particle accumulation, bridging and uneven movement in the low-inclination-angle rolling process;

[0075] By inducing vibration through continuous mechanical knocking, loosening the gathered area, prompting all the beads to fully participate in the rolling and coating process, significantly improving the uniformity of powder distribution, at the same time, the repeated tumbling under the assistance of vibration helps to modify the shape of the beads, improve the sphericity, and enhance the particle density.

[0076] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A granulation tower for zirconium oxide bead production, comprising a rotating support disc (3), the lower end of which is provided with a transmission base (1), characterized in that: The upper end of the transmission base (1) is rotatably installed with a rolling ball mechanism (4), one side of the transmission base (1) is provided with a mist pipe (6), and the bottom of the mist pipe (6) is provided with a rubbing particle mechanism (5), the rubbing particle mechanism (5) is located directly above the rolling ball mechanism (4), a baffle (2) is arranged between the rolling ball mechanism (4) and the rubbing particle mechanism (5), and the baffle (2) is rotatably installed on one side of the mist pipe (6), a spraying mechanism (7) for spraying and granulating zirconia in cooperation with the rubbing particle mechanism (5) is fixedly installed in the rolling ball mechanism (4). The spraying mechanism (7) comprises a central shaft pipe (71), a plurality of double-layer conical frames (74) are arranged on the outer surface of the central shaft pipe (71) in equal intervals, a plurality of leakage grooves (75) are arranged in the double-layer conical frame (74) in annular array, and a plurality of rubbing blocks (76) are arranged in the double-layer conical frame (74) in annular array. The rubbing particle mechanism (5) comprises an atomizing cylinder (51), the atomizing cylinder (51) is installed at the lower end of the mist pipe (6), the upper end of the atomizing cylinder (51) is provided with a feeding pipe (52), and the inner wall of the atomizing cylinder (51) is provided with a plurality of rubbing sheets (53) arranged in multiple layers in annular array. The outer surface of the rubbing sheet (53) is provided with a plurality of rib protrusions (54) arranged at equal intervals, and the rubbing sheet (53) is in the shape of an arc triangle, a plurality of leakage holes (55) are arranged on one side of the outer surface of the rubbing sheet (53). The double-layer conical frame (74) is arranged 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). A spraying ring (73) is arranged on the outer surface of the central shaft pipe (71) between the two double-layer conical frames (74), and a spiral sheet (72) is arranged on the outer surface of the spraying ring (73), and the spiral sheet (72) is in the shape of an inverted conical spiral.

2. The prilling tower for zirconium oxide bead production according to claim 1, characterized in that: The rolling ball mechanism (4) comprises a wave rolling assembly (41), the wave rolling assembly (41) comprises a sleeve rod (412) and an outer cylinder (411), and the outer surface of the sleeve rod (412) is provided with a conical hopper disc (413) in the shape of a funnel.

3. A prilling tower for zirconium oxide bead production according to claim 2, characterized in that: The outer surface of the conical hopper disc (413) is provided with a wave sheet (414) in the shape of a wave ring, the wave sheet (414) is fixedly installed on the inner wall of the outer cylinder (411), the outer cylinder (411) is rotatably arranged on the upper end of the rotating support disc (3), the sleeve rod (412) is connected with a transmission end in the transmission base (1), and the central shaft pipe (71) is fixedly installed in the sleeve rod (412).

4. The prilling tower for zirconium oxide bead production according to claim 1, characterized in that: The rolling ball mechanism (4) comprises a spiral rolling assembly (42), the outer surface of the connecting shaft (424) is provided with a cone disc (422), the cone disc (422) is fixedly installed on the inner wall of the cylinder (421), the cylinder (421) is swingingly arranged on the upper end of the rotating support disc (3), the outer surface of the cone disc (422) is provided with spiral ribs (423) arranged in a spiral manner, the connecting shaft (424) is connected with the transmission end inside the transmission base (1), and the middle shaft pipe (71) is fixedly installed inside the connecting shaft (424).

5. The prilling tower for zirconium oxide bead production according to claim 1, characterized in that: The rolling ball mechanism (4) comprises an inclined rolling assembly (43), the outer surface of the shaft rod (432) and the inner wall of the cover cylinder (431) are provided with an inclined disc (433), the inclined disc (433) is arranged at an inclined angle, the bottom wall of the inclined disc (433) is provided with a plurality of convex blocks (435) arranged in an annular array, the actuating piece (434) is fixedly installed on the upper end of the rotating support disc (3) and is in contact with the convex blocks (435), the cover cylinder (431) is swingingly arranged on the upper end of the rotating support disc (3), the shaft rod (432) is connected with the transmission end inside the transmission base (1), and the middle shaft pipe (71) is fixedly installed inside the shaft rod (432).

6. A molding method for zirconia bead production using the granulation tower for zirconia bead production according to any one of claims 1 to 5, characterized by, The specific forming method of the zirconia beads is as follows: Step one, the zirconia powder is added into the rubbing mechanism (5), the transmission base (1) drives the rolling ball mechanism (4) to rotate, and the spraying mechanism (7) is synchronously rotated, the spraying mechanism (7) sprays the binder solution into the rubbing mechanism (5) during the rotation process, the zirconia powder is wetted and rubbed, the powder is aggregated and the initial bead core is formed, the formed bead core gradually falls into the rolling ball mechanism (4) under the action of gravity and the rotation of the spraying mechanism (7); Step two, the bead core falling into the rolling ball mechanism (4) continuously rotates, under the combined action of centrifugal force and rolling friction, the bead core continuously adsorbs the surrounding scattered zirconia powder to form spherical beads.

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