A micron-level solid ceramic powder spray granulator

Abstract

This application relates to the field of atomizer equipment technology and discloses a micron-level solid ceramic powder spray granulator, including a base support, a drying tower body fixedly installed at the top of the base support, an output pipe fixedly installed at the bottom of the drying tower body, a mounting bracket provided at the top of the drying tower body, and an atomizer fixedly installed inside the mounting bracket. In this micron-level solid ceramic powder spray granulator, regarding the atomizer and its structure, when the atomizer is not in operation, as gas leaks from the inner cavity of the inner flow tube, the elastic force of the second elastic element forces the linkage assembly to move downwards, and applies pressure again to the side of the elastic ring, causing it to deform upwards and drive the outer flow tube upwards to squeeze the third elastic element. Simultaneously, the outer surface of the inner flow tube and the inner wall of the outer flow tube come into contact with each other to squeeze out the liquid material stored therein.

Description

Technical Field

[0001] This application relates to the field of atomizer equipment technology, and in particular to a micron-level solid ceramic powder spray granulator. Background Technology

[0002] Spray granulation is a material granulation technology that disperses liquid materials into a mist of microparticles and then instantly evaporates the solvent to form spherical particles. Compared with other granulation processes, spray granulation has the characteristics of high sphericity and good particle size uniformity. It has now become the mainstream technology for the preparation of catalysts, pharmaceuticals and ceramic powders. Especially in the field of ceramic powder preparation, it effectively solves the problem of component sedimentation in other granulation processes.

[0003] In spray granulation technology, the atomizer is one of the important components. However, existing spray granulators are not always in operation and require periodic shutdowns for maintenance. Due to the high viscosity of liquid materials, a small amount of liquid material remains in the flow gap of the atomizer and is difficult to drain. This easily leads to scaling and blockage on the inner wall of the flow gap, which greatly affects the granulation efficiency, stability and reliability of the material.

[0004] Therefore, there is an urgent need for an atomizer component for spray granulation machines to solve the defects of existing atomizers in actual use. Summary of the Invention

[0005] This application proposes a micron-level solid ceramic powder spray granulator, which effectively avoids clogging caused by liquid material remaining in the atomizer, thus achieving higher spray granulation efficiency. This addresses the problems of existing spray granulators, which are not continuously operating and require periodic shutdowns for maintenance, and where the high viscosity of liquid materials causes a small amount of liquid material to remain in the flow gap of the atomizer, making it difficult to drain and easily leading to scaling and clogging on the inner wall of the flow gap.

[0006] To achieve the above objectives, this application adopts the following technical solution: a micron-level solid ceramic powder spray granulator, comprising a base support, a drying tower body for spray granulation of liquid materials is fixedly installed at the top of the base support, an output pipe extending to the bottom of the inner cavity of the drying tower body is fixedly installed at the bottom of the drying tower body, and the other end of the output pipe is connected to a cyclone separator, so that the spherical particles prepared by the drying tower body can be sorted by the cyclone separator; a mounting bracket is provided at the top of the drying tower body, and an atomizer for atomizing liquid materials is fixedly installed inside the mounting bracket, with its bottom end extending to the top of the inner cavity of the drying tower body;

[0007] The atomizer includes a positioning plate fixedly mounted on a mounting bracket. An inner flow tube for high-speed gas flow is fixedly mounted at the bottom of the positioning plate. A linkage assembly is movably sleeved on the top of the outer surface of the inner flow tube. A hollow shaft extending to the top of the positioning plate is movably sleeved inside the linkage assembly. The top of the hollow shaft is connected to a high-pressure gas pump, and high-pressure gas can be delivered to the inner cavity of the inner flow tube through the hollow shaft. A second elastic element is movably sleeved in the middle of the outer surface of the hollow shaft to form a transmission connection between the linkage assembly and the positioning plate. The bottom of the outer surface of the hollow shaft is in frictional contact with the inner wall of the inner flow tube. Therefore, when a large amount of gas is suddenly injected into the inner cavity of the inner flow tube through the hollow shaft, the bottom of the inner flow tube cannot flow in time and will back-press the hollow shaft, forcing it to move upward to compress the second elastic element.

[0008] The outer surface of the inner flow tube is provided with three sets of connecting rods arranged in a ring array. An outer flow tube is movably sleeved at the bottom of the outer surface of the inner flow tube through the connecting rods. A gap is formed between the inner wall of the outer flow tube and the outer surface of the inner flow tube to allow liquid material to flow. A third elastic element is provided on the outer surface of the connecting rod to form a transmission connection between the outer flow tube and the inner flow tube. The top of the inner wall of the outer flow tube is provided with an elastic ring with a ring-shaped cross-section that contacts the bottom of the outer surface of the linkage kit. An input pipe is fixedly installed on one side of the outer surface of the outer flow tube, which connects to its inner cavity. The other end of the input pipe extends to the top of the base bracket and is connected to the liquid material conveying system. The liquid material can then be conveyed to the atomizer for atomization through the input pipe.

[0009] Then, when the hollow shaft moves upward and drives the linkage assembly to move upward, the linkage assembly will release the lateral pressure on the elastic ring, and under the elastic force of the third elastic element, it will force the outer flow pipe to move downward to open the gap formed between the inner flow pipe and the outer flow pipe for hydraulic material to flow.

[0010] When the hollow shaft stops supplying gas into the inner cavity of the inner flow tube, as the gas in the inner cavity of the inner flow tube is lost, the elastic force of the second elastic element forces the linkage assembly to move downward, and applies pressure to the side of the elastic ring again, causing it to deform upward and drive the outer flow tube to move upward to squeeze the third elastic element. At the same time, the outer surface of the inner flow tube and the inner wall of the outer flow tube are brought into contact with each other to squeeze out the liquid material stored therein, so as to effectively prevent scaling and blockage.

[0011] Furthermore, initially, the unit gas volume delivered to the inner cavity of the inner flow tube through the hollow shaft is greater than the unit gas flow volume of the bottom through hole of the inner flow tube, thereby ensuring that the gas in the inner cavity of the inner flow tube will gradually increase and force the hollow shaft to move upward. Then, as the linkage assembly moves to the highest position, the unit gas volume delivered to the inner cavity of the inner flow tube by the hollow shaft is equal to the unit gas flow volume of the bottom through hole of the inner flow tube to maintain the pressure balance in its inner cavity.

[0012] Furthermore, a first elastic element is movably sleeved at the bottom of the outer surface of the hollow shaft to form a transmission connection between the linkage assembly and the hollow shaft. The elasticity of the first elastic element can be used to effectively buffer the oscillation impact on the atomizer during the process of the hollow shaft delivering gas into the inner cavity of the inner flow tube.

[0013] Furthermore, the elastic strength of the second elastic element is greater than the sum of the elastic strengths of the elastic ring and the third elastic element, thereby ensuring that, under the elastic force of the second elastic element, pressure can be applied to the side of the elastic ring and deformed, thereby forcing the external flow pipe to move upward and compress the third elastic element.

[0014] Furthermore, the bottom of the outer surface of the inner flow pipe is provided with a conical structure, and the inner wall of the outer flow pipe is provided with a matching conical structure, thereby ensuring that the high-speed airflow in the inner flow pipe and the liquid material in the outer flow pipe can collide and impact to atomize the liquid material.

[0015] The beneficial effects of this invention are as follows:

[0016] This application provides a micron-level solid ceramic powder spray granulator. Regarding the atomizer and its structure, when the atomizer is activated, the linkage assembly releases the lateral pressure on the elastic ring. Under the elastic force of the third elastic element, the outer flow pipe is forced to move downwards to open the gap between the inner and outer flow pipes for hydraulic material flow. When the atomizer is not activated, as gas leaks from the inner cavity of the inner flow pipe, the linkage assembly is forced to move downwards under the elastic force of the second elastic element, applying pressure to the side of the elastic ring again. This causes the ring to deform upwards, pulling the outer flow pipe upwards to squeeze the third elastic element. Simultaneously, the outer surface of the inner flow pipe and the inner wall of the outer flow pipe come into contact, squeezing out any remaining liquid material to prevent scaling and blockage. This effectively improves the stability and reliability of the atomizer during operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the atomizer of the present invention;

[0020] Figure 3 This is a front view of the atomizer structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the internal flow tube of the present invention;

[0022] Figure 5 This is a schematic diagram of the linkage kit of the present invention;

[0023] Figure 6 This is a schematic diagram of the external flow tube of the present invention.

[0024] In the diagram: 1-Base bracket, 2-Drying tower body, 3-Output pipe, 4-Mounting bracket, 5-Atomizer, 6-Positioning plate, 7-Inner flow pipe, 8-Linkage kit, 9-Hollow shaft, 10-First elastic element, 11-Second elastic element, 12-Outer flow pipe, 13-Elastic ring, 14-Connecting rod, 15-Third elastic element, 16-Input pipe. Detailed Implementation

[0025] 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.

[0026] like Figure 1As shown, a micron-sized solid ceramic powder spray granulator includes a base support 1. A drying tower 2 for spray granulation of liquid materials is fixedly installed at the top of the base support 1. An output pipe 3 extending to the bottom of the inner cavity of the drying tower 2 is fixedly installed at the bottom of the drying tower 2, and the other end of the output pipe 3 is connected to a cyclone separator. The cyclone separator can then sort the spherical particles prepared by the drying tower 2. A mounting bracket 4 is provided at the top of the drying tower 2, and an atomizer 5 for atomizing liquid materials, extending from the bottom to the top of the inner cavity of the drying tower 2, is fixedly installed inside the mounting bracket 4. Figures 2-4 As shown, the atomizer 5 includes a positioning plate 6 fixedly mounted on a mounting bracket 4. An inner flow tube 7 for high-speed gas flow is fixedly mounted at the bottom of the positioning plate 6. A linkage assembly 8 is movably sleeved on the top of the outer surface of the inner flow tube 7. A hollow shaft 9, extending to the top of the positioning plate 6, is movably sleeved inside the linkage assembly 8. The top of the hollow shaft 9 is connected to a high-pressure air pump, and high-pressure gas can be delivered to the inner cavity of the inner flow tube 7 through the hollow shaft 9. Figure 5 As shown, a second elastic element 11 is movably sleeved in the middle of the outer surface of the hollow shaft 9 to form a transmission connection between the linkage assembly 8 and the positioning plate 6. The bottom of the outer surface of the hollow shaft 9 is in frictional contact with the inner wall of the inner flow tube 7. When a large amount of gas is suddenly injected into the inner cavity of the inner flow tube 7 through the hollow shaft 9, the bottom of the inner flow tube 7 cannot flow in time, so it will reverse the pressure on the hollow shaft 9 and force it to move upward to compress the second elastic element 11.

[0027] like Figure 6 As shown, the outer surface of the inner flow tube 7 is provided with three sets of connecting rods 14 arranged in a ring array. The outer flow tube 12 is movably sleeved at the bottom of the outer surface of the inner flow tube 7 through the connecting rods 14. A gap is formed between the inner wall of the outer flow tube 12 and the outer surface of the inner flow tube 7 to allow liquid material to flow. The outer surface of the connecting rods 14 is provided with a third elastic element 15 to form a transmission connection between the outer flow tube 12 and the inner flow tube 7. The top of the inner wall of the outer flow tube 12 is provided with an elastic ring 13 with a ring-shaped cross-section that contacts the bottom of the outer surface of the linkage kit 8. An input pipe 16 is fixedly installed on one side of the outer surface of the outer flow tube 12 and connects to its inner cavity. The other end of the input pipe 16 extends to the top of the base bracket 1 and is connected to the liquid material conveying system. The liquid material can then be conveyed to the atomizer 5 for atomization through the input pipe 16.

[0028] When the hollow shaft 9 moves upward and drives the linkage assembly 8 to move upward, the linkage assembly 8 will release the lateral pressure on the elastic ring 13, and under the elastic force of the third elastic element 15, it will force the external flow pipe 12 to move downward to open the gap formed between the internal flow pipe 7 and the external flow pipe 12 to allow hydraulic materials to flow.

[0029] When the hollow shaft 9 stops supplying gas into the inner cavity of the inner flow pipe 7, as the gas in the inner cavity of the inner flow pipe 7 is lost, the elastic force of the second elastic element 11 forces the linkage assembly 8 to move downward and applies pressure to the side of the elastic ring 13 again, causing it to deform upward and drive the outer flow pipe 12 to move upward to squeeze the third elastic element 15. At the same time, the outer surface of the inner flow pipe 7 and the inner wall of the outer flow pipe 12 are made to fit together to squeeze out the liquid material stored therein, so as to effectively prevent scaling and blockage.

[0030] In this technical solution, initially, the unit gas volume delivered to the inner cavity of the inner flow tube 7 through the hollow shaft 9 is greater than the unit gas flow volume of the bottom through hole of the inner flow tube 7, thereby ensuring that the gas in the inner cavity of the inner flow tube 7 will gradually increase and force the hollow shaft 9 to move upward. Then, as the linkage assembly 8 moves to the highest position, the unit gas volume delivered to the inner cavity of the inner flow tube 7 by the hollow shaft 9 is equal to the unit gas flow volume of the bottom through hole of the inner flow tube 7 to maintain the pressure balance in its inner cavity.

[0031] The common form of gas flow rate per unit time is Q=Av, where Q is the volumetric flow rate, A is the cross-sectional area of ​​the pipe, and v is the gas velocity. In this invention application, the cross-sectional area of ​​the hollow shaft 9 is fixed. Therefore, the amount of gas transported by the hollow shaft 9 per unit time is based on the gas velocity of the high-pressure air pump connected to the hollow shaft 9.

[0032] In this technical solution, a first elastic element 10 is movably sleeved on the bottom of the outer surface of the hollow shaft 9 to form a transmission connection between the linkage assembly 8 and the hollow shaft 9. The elasticity of the first elastic element 10 can be used to effectively buffer the oscillation impact caused to the atomizer by the hollow shaft 9 during the process of conveying gas into the inner cavity of the inner flow tube 7.

[0033] Meanwhile, the gas flow rate per unit time at the bottom through hole of the inner flow pipe 7 is controlled by the gas pressure inside. As can be seen from the setting of the first elastic element 10, the gas pressure inside the inner flow pipe 7 is in a relatively constant state. Therefore, the unit gas flow rate at the bottom through hole of the inner flow pipe 7 is determined.

[0034] In this technical solution, the elastic strength of the second elastic element 11 is greater than the sum of the elastic strengths of the elastic ring 13 and the third elastic element 15. This ensures that, under the elastic force of the second elastic element 11, during the process of driving the linkage assembly 8 to move downward, pressure can be applied to the side of the elastic ring 13 and deform it, thereby forcing the external flow pipe 12 to move upward and compress the third elastic element 15.

[0035] like Figure 2As shown, in this technical solution, the bottom of the outer surface of the inner flow pipe 7 is set as a conical structure, and the inner wall of the outer flow pipe 12 is set as a matching conical structure, thereby ensuring that the high-speed airflow of the inner flow pipe 7 and the liquid material in the outer flow pipe 12 can collide and impact to atomize the liquid material.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A micron-sized solid ceramic powder spray granulator, comprising a base support (1), a drying tower (2) fixedly mounted on the top of the base support (1), an output pipe (3) extending to the bottom of the inner cavity of the drying tower (2) fixedly mounted on the bottom of the drying tower (2), a mounting bracket (4) provided on the top of the drying tower (2), and an atomizer (5) extending to the top of the inner cavity of the drying tower (2) fixedly mounted inside the mounting bracket (4), characterized in that: The atomizer (5) includes a positioning plate (6) fixedly mounted on a mounting bracket (4). An inner flow tube (7) is fixedly mounted at the bottom of the positioning plate (6), and a linkage kit (8) is movably sleeved on the top of the outer surface of the inner flow tube (7). A hollow shaft (9) extending to the top of the positioning plate (6) is movably sleeved inside the linkage kit (8). A second elastic element (11) is movably sleeved in the middle of the outer surface of the hollow shaft (9) to form a transmission connection between the linkage kit (8) and the positioning plate (6). The bottom of the outer surface of the hollow shaft (9) is in frictional contact with the inner wall of the inner flow tube (7). The outer surface of the inner flow tube (7) is provided with a connecting rod (14), and an outer flow tube (12) is movably sleeved at the bottom of the outer surface of the inner flow tube (7) through the connecting rod (14). A third elastic element (15) is provided on the outer surface of the connecting rod (14) to form a transmission connection between the outer flow tube (12) and the inner flow tube (7). The top of the inner wall of the outer flow tube (12) is provided with an elastic ring (13) with a cross-section in the shape of an annular structure that contacts the bottom of the outer surface of the linkage kit (8). An input pipe (16) communicating with its inner cavity is fixedly installed on one side of the outer surface of the outer flow tube (12). The other end of the input pipe (16) extends to the top of the base bracket (1) and is connected to the liquid material conveying system.

2. The micron-level solid ceramic powder spray granulator according to claim 1, characterized in that, Initially, the amount of gas supplied by the hollow shaft (9) to the inner cavity of the inner flow tube (7) is greater than the amount of gas supplied by the bottom through hole of the inner flow tube (7). Then, as the linkage assembly (8) moves to the highest position, the amount of gas supplied by the hollow shaft (9) to the inner cavity of the inner flow tube (7) becomes equal to the amount of gas supplied by the bottom through hole of the inner flow tube (7).

3. The micron-level solid ceramic powder spray granulator according to claim 2, characterized in that, The bottom of the outer surface of the hollow shaft (9) is movably sleeved with a first elastic element (10) to form a transmission connection between the linkage assembly (8) and the hollow shaft (9).

4. The micron-level solid ceramic powder spray granulator according to claim 3, characterized in that, The elastic strength of the second elastic element (11) is greater than the sum of the elastic strengths of the elastic ring (13) and the third elastic element (15).

5. The micron-level solid ceramic powder spray granulator according to claim 4, characterized in that, The bottom of the outer surface of the inner flow tube (7) is set as a conical structure, while the inner wall of the outer flow tube (12) is set as a conical structure that matches it.

Images