Industrial spherical particle preparation device

Abstract

The utility model discloses an industrial spherical particle preparation device, which is used for spherical particle preparation in the field of chemical industry and comprises a granulation unit and a spheroidizing unit, the spheroidizing unit further comprises a first-stage spheroidizing machine, a second-stage spheroidizing machine, a third-stage spheroidizing machine, a fourth-stage spheroidizing machine, a fourth-stage spheroidizing machine and a fifth-stage spheroidizing machine, the disc surface of the first rotary disc is provided with a first disc surface chamfer of a boss and a first table surface height, and is used for breaking granulated long particles into short particles; the second-stage spheroidizing machine provides power through bearing transmission and is provided with a gully-shaped second rotating disc surface, and the second rotating disc surface is provided with a second disc surface chamfer with a boss and a second table surface height and is used for neatening the short particles; and the third-stage spheroidizing machine provides power through bearing transmission and is provided with a gully-shaped third rotating disc face, and the third rotating disc face is provided with a third disc face chamfer with a boss and a third table face height and is used for spheroidizing and polishing the neat short particles. According to the utility model, the yield of spherical particle products for industrial application is higher, and the particle size distribution of particles is more uniform.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of chemical industry, especially relates to a spherical particle preparation device used in industry. BACKGROUND

[0002] Spherical particles are a kind of particles with regular geometric shape, which have smooth surface, small gap, good fluidity, uniform distribution, compact stacking, high packing coefficient and are widely used in pharmaceutical field, chemical field, environmental protection field and food field etc. The spherical particles involved in the patent refer to the spherical particles applied in chemical field, such as drying agent, catalyst particles etc. The preparation methods of spherical particles in industry mainly include spray drying, rotary molding, oil molding, spouted molding and melt molding etc.

[0003] The rotary molding method is adopted, for example, Chinese patent application CN115784816A relates to the field of catalyst preparation technology, and particularly relates to a rotary granulation spherical catalyst, which comprises boron powder, polyvinylidene fluoride, solvent, small particle agglomerated boron, microcrystalline cellulose, PBT, GAP, sodium carboxymethyl cellulose, toluene diisocyanate and toluene. The agglomerated boron particles obtained have good particle size dispersion, good morphology and high bulk density. The prepared agglomerated boron is a spherical particle. The preparation process of the agglomerated boron catalyst by the rotary granulation method mainly includes four steps, namely premixing, extrusion, rounding and drying (solidification). The extrusion and rounding processes are the most important two links in the entire granulation process. The single screw extruder is used for extruding the boron-containing premixed material in the extrusion process. After the material is extruded into a dense strip through the hole plate, the rounding process is carried out. Whether the strip can be rounded depends on the stress size of the strip and the viscoelasticity of the binder. On the one hand, it requires that the stress size of the strip in the rounding process should be appropriate. If the stress is too large, the small cylindrical body will be deformed too much and scattered into small particles, so that the agglomerated boron particles cannot be obtained. If the stress is too small, the small cylindrical body cannot produce sufficient deformation. On the other hand, the binder also requires a certain brittleness. Otherwise, the small cylindrical body is not easy to break and round.

[0004] The above-mentioned existing spherical particle preparation device is used for granulation, and the appearance of the prepared spherical particles has diversity and is not uniform.

[0005] Therefore, an industrial spherical particle preparation device with high product yield and more uniform particle size distribution is needed.

[0006] The information disclosed in this BACKGROUND section is only intended to increase an understanding of the general context of the present utility model and is not to be taken in any way as an acknowledgment or any form of suggestion that this information forms prior art that is already widely known in the art. CONTENT OF THE UTILITY MODEL

[0007] The utility model discloses a purpose lies in providing a kind of industrial spherical particle preparation device, by being set as multistage to throw round unit, and using different level's throwing round machine respectively to carry out long particle fracture into short particle, short particle regularity and particle spheroidization and polishing etc.

[0008] To achieve the above object, according to the first aspect of the utility model, the utility model provides a kind of industrial spherical particle preparation device, for the spherical particle preparation in chemical industry field, including granulating unit and throw round unit, throw round unit further includes: first throwing round machine, it is powered by bearing transmission and has the first rotating disc disc surface of gully shape, the first rotating disc disc surface has the first disc surface chamfer of boss and first mesa height, for long particle after granulating is fractured into short particle;Second throwing round machine, it is powered by bearing transmission and has the second rotating disc disc surface of gully shape, the second rotating disc disc surface has the second disc surface chamfer of boss and second mesa height, for short particle is regular;Third throwing round machine, it is powered by bearing transmission and has the third rotating disc disc surface of gully shape, the third rotating disc disc surface has the third disc surface chamfer of boss and third mesa height, for short particle after regular is spheroidized and polished.

[0009] Further, in the above technical solution, the first throwing round machine, the second throwing round machine and the third throwing round machine are in a communication state and can be arranged in a staggered manner.

[0010] Further, in the above technical solution, the first disc surface chamfer can be less than 120°; the first mesa height can be 5-6mm. The second disc surface chamfer can be less than 130°; the second mesa height can be 3-4mm. The third disc surface chamfer can be less than 150°; the third mesa height can be 1-2mm.

[0011] Further, in the above technical solution, the first throwing round machine can be adjusted by the first fan; the rotating frequency of the first rotating disc can be 30-50HZ, the rotating speed can be 400-600r / min, and the running time can be 1-5min. The second throwing round machine can be adjusted by the second fan; the rotating frequency of the second rotating disc can be 20-35HZ, the rotating speed can be 400-600r / min, and the running time can be 3-15min. The third throwing round machine can be adjusted by the third fan; the rotating frequency of the third rotating disc can be 10-20HZ, the rotating speed can be 200-400r / min, and the running time can be 3-20min.

[0012] Further, in the above technical solution, the first throwing round machine, the second throwing round machine and the third throwing round machine can be provided with a guide baffle, which can be symmetrically arranged on the surface of the rotating disc and located at the inner edge of the throwing round machine, to provide uniformly distributed materials for the rotating disc disc surface.

[0013] Further, the first, second and third tumbling machines can be combined into two or split into three or more.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] 1) The present application is suitable for preparing materials with certain stickiness and brittleness in the chemical industry; by setting the tumbling unit into multiple stages and using different tumbling machines for processes such as cutting long particles into short particles, sizing short particles, and shaping and polishing particles, the yield of spherical particle products for industrial applications can be higher, and the particle size distribution is more uniform.

[0016] 2) The spherical particle preparation device of the present application can use different tumbling machines to design different disc surfaces, from cutting long particles to sizing short particles to shaping particles, to achieve high sphericity of spherical particles and high product yield. Tests have shown that the particle size range of spherical particles is 0.1-2.0mm, the yield of spherical particles with a particle size distribution of ±0.1mm can reach more than 90%, the sphericity of spherical particles can reach more than 80%, and the wear index is less than 0.5%, which can meet the use requirements of various spherical particles.

[0017] 3) The present application can effectively reduce the friction of materials on the edge of the disc and the wall due to the action of centrifugal force by designing baffle plates in the multi-stage tumbling machine, and can fully utilize the various disc surfaces of the disc to achieve the purposes of breaking, sizing and tumbling.

[0018] 4) By adjusting the process parameters of the multi-stage tumbling machine, especially the reasonable matching of the rotation speed of the disc and the amount of air introduced, the present application can achieve the best molding effect, higher sphericity, lower wear index, and higher product yield.

[0019] 5) The high-low staggered arrangement of the multi-stage tumbling machine is conducive to the rational use of space and the realization of continuous production.

[0020] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application and can be implemented based on the content of the specification, at the same time, in order to make the above and other purposes, technical features and advantages of the present application more easy to understand, one or more preferred embodiments are listed as follows, and the details are described as follows with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the left view (perspective view showing the third tumbling machine) of the tumbling unit in the industrial spherical particle preparation device of the present application.

[0022] Figure 2 is the front view of the throwing circle unit in the industrial spherical particle preparation device (perspective shows the three-stage throwing circle machine).

[0023] Figure 3 is the plan view of the throwing circle unit in the industrial spherical particle preparation device (shows the three-stage throwing circle machine).

[0024] Figure 4 is the disc surface schematic diagram of the throwing circle machine.

[0025] Figure 5 is Figure 4 is the structure schematic diagram of each boss.

[0026] Main figure mark explanation:

[0027] A-material;

[0028] 1-first throwing circle machine, 11-first rotating disc, 12-first transmission channel, 2-second throwing circle machine, 21-second rotating disc, 22-second transmission channel, 3-third throwing circle machine, 31-third rotating disc, 32-third transmission channel, 4-bearing, 5-guiding flow baffle, 6-boss. DETAILED DESCRIPTION

[0029] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of protection of the present application is not limited by the specific embodiments.

[0030] Unless otherwise specifically stated, the term "comprises" or variations such as "comprising" or "comprises" throughout the specification and claims, is not intended to exclude other elements or other components. It is to be understood that the term "comprises" or "comprising" does not exclude the presence of other elements or additional components.

[0031] In this document, spatially relative terms, such as "below", "beneath", "lower", "above", "upper", "upward", "upwards", "down", "downward", "downwards", "vertical", "horizontal", and the like, can be used to describe the relationship between one element or feature and another element or feature as illustrated in the drawings. It will be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation, in addition to the orientations depicted in the figures. For example, if a device is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of below and above. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. The terms "first", "second", "third", etc. do not necessarily indicate any ordinal, chronological or other sequence unless expressly stated to do so.

[0032] In this document, the terms "first", "second", etc. are used to distinguish two different elements or parts, and are not used to limit a specific position or relative relationship. In other words, in some embodiments, the terms "first", "second", etc. can also be interchanged with each other.

[0033] The utility model provides a kind of industrial spherical particle preparation device, for the spherical particle preparation (such as desiccant particle, catalyst particle etc.) in chemical industry, including granulating unit and throwing round unit.In granulating process, now the material of uniform mixture is put into granulating unit, and the particle of moderate length is prepared according to the spherical particle particle size requirement, after transmission to the throwing round unit of multiple levels, after multiple fracture and throwing round, form spherical particle.Granulating unit can use any kind of granulating equipment, for example, swing granulator, high-speed shearing granulator, various mode extruder etc.

[0034] As Figures 1-3 Shown, throwing round unit can include 2~5 levels of throwing round machine, preferably 3 levels, each level can realize different function and purpose.When using three levels, throwing round unit includes one level throwing round machine 1, two level throwing round machine 2 and three level throwing round machine 3.One level throwing round machine 1 is powered by bearing 4 transmission and has gully-shaped first rotary disc 11 disc surface, and first rotary disc disc surface has the first disc surface chamfer of boss 6 (chamfer is represented by alpha, refer to Figure 5 ) And first mesa height (mesa height is represented by H, refer to Figure 5 ), for breaking long particle after granulating into short particle.Two level throwing round machine 2 is powered by bearing transmission and has gully-shaped second rotary disc 21 disc surface, and second rotary disc disc surface has the second disc surface chamfer of boss and second mesa height, for regularizing short particle.Three level throwing round machine 3 is powered by bearing transmission and has gully-shaped third rotary disc 31 disc surface, and third rotary disc disc surface has the third disc surface chamfer of boss and third mesa height, for making spherical and polishing short particle after regularizing.

[0035] The utility model discloses a kind of industrial spherical particle preparation device, for the spherical particle preparation (such as desiccant particle, catalyst particle etc.) in chemical industry, including granulating unit and throwing round unit.In granulating process, now the material of uniform mixture is put into granulating unit, and the particle of moderate length is prepared according to the spherical particle particle size requirement, after transmission to the throwing round unit of multiple levels, after multiple fracture and throwing round, form spherical particle.Granulating unit can use any kind of granulating equipment, for example, swing granulator, high-speed shearing granulator, various mode extruder etc.

[0036] Further as Figures 1-3As shown, the first-level rounding machine 1, the second-level rounding machine 2 and the third-level rounding machine 3 are in a communication state and are arranged in a staggered manner from high to low. Specifically, the rounding unit of the utility model is a combined equipment in which three rounding machines are arranged in a staggered manner from high to low. The staggered arrangement from high to low is beneficial to the rational use of space and the realization of continuous production. The rounding unit arranged in three levels is three independent rounding machines connected in sequence, and the size of each rounding machine can be adjusted according to the processing amount.

[0037] Further as shown in the figure, Figures 1-5 The first-level rounding machine 1 mainly functions to break long particles into short particles. The first-level rounding machine adopts bearing transmission, and the periphery is a smooth cylindrical surface. The disc surface of the first rotating disc 11 is composed of matrix-arranged bosses 6, and the disc surface as a whole is in a gully shape. Since the disc surface of the first rotating disc 11 is used to cut long particles, the chamfer angle α of the disc surface is less than 120°, and the table height h is 5-6 mm. After various raw materials for forming balls are uniformly mixed on a mixing device, the materials are conveyed to the granulating unit by a conveying belt. Different screens are selected according to the size of the prepared spherical particles, and the mixed materials are prepared into particles of different lengths after passing through the screens. The particles are conveyed to the first-level rounding machine 1 and are broken by the disc surface of the first rotating disc 11. In order to prevent the particles from adhering to each other, the first-level rounding machine can adjust the air volume of the first fan (not shown in the figure) according to the amount of the added materials. The rotation frequency of the first rotating disc is preferably 30-50 HZ, the rotation speed is 400-600 r / min, and the running time is 1-5 min. After being broken into particles with lengths close to the diameters, the materials enter the second-level rounding machine through the first conveying channel 21.

[0038] Further as shown in the figure, Figures 1-5 The second-level rounding machine 2 mainly functions to regularize short particles. The second-level rounding machine also adopts bearing transmission, and the periphery is also a smooth cylindrical surface. The disc surface of the second rotating disc 21 is also composed of matrix-arranged bosses 6, and the disc surface as a whole is in a gully shape. Since the disc surface of the second rotating disc 21 is used to regularize short particles, the chamfer angle α of the disc surface is less than 130°, and the table height h is 3-4 mm. In order to prevent the particles from adhering to each other, the second-level rounding machine 2 can adjust the air volume of the second fan (not shown in the figure) according to the amount of the added materials. The rotation frequency of the second rotating disc is preferably 20-35 HZ, the rotation speed is 400-600 r / min, and the running time is 3-15 min. The material particles entering the second-level rounding machine 2 have been formed into spherical shapes after preliminary rounding.

[0039] Further as shown in the figure, Figures 1-5As shown, the main function of the third-stage spheroidizing machine 3 is to spheroidize and polish the particles. The third-stage spheroidizing machine also adopts bearing transmission, and the periphery is also a smooth cylindrical surface. The disc surface of the third disc 31 is also composed of matrix-arranged bosses 6, and the disc surface as a whole is in a gully shape. Since the disc surface of the third disc 31 is used for spheroidization and polishing, the chamfer angle a of the disc surface is less than 150°, and the height h of the table surface is 1-2 mm. In order to prevent the particle skin from being too dry to affect shaping, the third-stage spheroidizing machine 3 can adjust the air volume of the third fan (not shown in the figure) according to the amount of material added. The rotation frequency of the third disc is preferably 10-20HZ, the rotation speed is 200-400r / min, and the running time is 3-20min.

[0040] Further as Figures 1-3 As shown, the first-stage spheroidizing machine 1, the second-stage spheroidizing machine 2 and the third-stage spheroidizing machine 3 are all provided with a flow guide baffle 5, which can be symmetrically arranged on the disc surface and located at the inner edge of the spheroidizing machine, for providing uniformly distributed material for the disc surface of each stage of the spheroidizing machine. During the rotation of the disc, due to the centrifugal effect, the material is thrown to the edge of the disc, and through the arrangement of the flow guide baffle 5, the material can be reflected and distributed at the center of the disc. Finally, the material fully utilizes the disc surface on the spheroidizing machine to achieve the purpose of breaking, regularizing and spheroidizing.

[0041] It should be noted that the three-stage arrangement of the first-stage spheroidizing machine 1, the second-stage spheroidizing machine 2 and the third-stage spheroidizing machine 3 is only an optimal arrangement, and the three stages can also be combined into two stages, or the three stages can be split into more than three stages. As long as the purpose of breaking, regularizing and spheroidizing can be achieved, it is acceptable.

[0042] In the particle preparation process, first, mix the raw materials required for preparing various spherical particles uniformly; then, use the spherical particle preparation equipment of the utility model to form the spherical particles; finally, dry and calcine the obtained formed spherical particles to obtain spherical particle samples. During the mixing process, commonly used mixing equipment can meet the requirements, and the process conditions are slightly different. The mixed material is conveyed to the spherical particle preparation device of the utility model through a conveying device for granulation and spheroidization.

[0043] The spherical particle preparation device has the advantages that under the premise that the used material has certain viscosity and brittleness, different disc surfaces can be designed by using the multi-stage tumbling machine, from the cutting of long particles, the regularizing of short particles to the shaping of particles, the spherical degree of the spherical particles is high, and the product yield is high. The test proves that the particle size range of the spherical particles is 0.1-2.0 mm, the yield of the spherical particles with a particle size distribution of ±0.1 mm can reach more than 90%, the spherical degree of the spherical particles can reach more than 80%, the wear index is less than 0.5%, various use requirements of the spherical particles can be met; the baffle is designed in the multi-stage tumbling machine, the material can be effectively reduced due to the friction on the edge of the rotating disc and the wall under the action of centrifugal force, each disc surface of the rotating disc can be fully utilized to realize the purposes of breaking, regularizing and tumbling; the multi-stage tumbling machine is adjusted by adjusting the process parameters, especially the reasonable matching of the rotating speed of the rotating disc and the air volume, the best molding effect can be achieved, the spherical degree is higher, the wear index is lower, and the product yield is higher; the high and low staggered arrangement of the multi-stage tumbling machine is beneficial to the reasonable use of space and realizes the continuous production.

[0044] The foregoing description of specific exemplary embodiments of the present application is intended to be illustrative only and is not intended to limit the present application to the precise forms described. Many modifications and variations are possible in light of the above teachings without departing from the spirit or essential characteristics of the present application. The exemplary embodiments were chosen and described in order to explain the principles of the present application and its practical application and to allow others skilled in the art to understand the present application for various exemplary embodiments with various modifications as are suited to the particular use contemplated. Any simple modifications, equivalent changes, and modifications based on the exemplary embodiments described above should fall within the scope of the present application.

Claims

1. An industrial spherical particle production apparatus characterized by comprising: The application discloses a spherical particle preparation device for chemical industry, which comprises a granulating unit and a rounding unit. The first rounding machine is powered by bearing transmission and has a gully-shaped first rotary disc disc face with a convex first disc face chamfer and a first mesa height for breaking long particles into short particles. The second rounding machine is powered by bearing transmission and has a gully-shaped second rotary disc disc face with a convex second disc face chamfer and a second mesa height for regularizing the short particles. The third rounding machine is powered by bearing transmission and has a gully-shaped third rotary disc disc face with a convex third disc face chamfer and a third mesa height for spheroidizing and polishing the regularized short particles.

2. The apparatus for producing industrial spherical particles according to claim 1, wherein The first, second and third rounding machines are in communication and are arranged in a staggered manner.

3. The apparatus for producing industrial spherical particles according to claim 1, wherein The first disc face chamfer is less than 120°, and the first mesa height is 5-6 mm.

4. The apparatus for producing industrial spherical particles according to claim 1, wherein The second disc face chamfer is less than 130°, and the second mesa height is 3-4 mm.

5. The apparatus for producing industrial spherical particles according to claim 1, wherein The third disc face chamfer is less than 150°, and the third mesa height is 1-2 mm.

6. The apparatus of claim 3, wherein the apparatus is configured to produce industrial spherical particles having a diameter of 0.1 to 10 mm. The first rounding machine is adjusted by a first air blower, the rotation frequency of the first rotary disc is 30-50 HZ, the rotation speed is 400-600 r / min, and the running time is 1-5 min.

7. The apparatus of claim 4, wherein the apparatus is configured to produce industrial spherical particles having a diameter of 0.1 to 10 mm. The second rounding machine is adjusted by a second air blower, the rotation frequency of the second rotary disc is 20-35 HZ, the rotation speed is 400-600 r / min, and the running time is 3-15 min.

8. The apparatus for producing industrial spherical particles according to claim 5, wherein The third rounding machine is adjusted by a third air blower, the rotation frequency of the third rotary disc is 10-20 HZ, the rotation speed is 200-400 r / min, and the running time is 3-20 min.

9. The apparatus of claim 1, wherein, The first, second and third rounding machines are provided with flow guide flaps which are symmetrically arranged on the rotary disc surface and located at the inner edge of the rounding machine, and are used for providing the rotary disc disc face with uniformly distributed materials.

10. The apparatus of claim 1, wherein, The first, second and third rounding machines can be combined into two stages or split into more than three stages.

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