Device for preparing zinc powder through atomization method

Abstract

The utility model relates to the technical field of zinc powder production, in particular to a device for preparing zinc powder by an atomization method. According to the technical scheme, the atomization device comprises a bottom plate, an atomization shell, a shell and a barrel frame, the upper surface of the bottom plate is provided with the atomization shell and the shell through supporting legs, the atomization shell and the shell are communicated with each other, a material pipe is arranged on the atomization shell in a communicated mode, a shaft pipe is arranged on the barrel frame in a communicated mode, the shaft pipe is rotationally arranged on the shell through a driving assembly, and the driving assembly is arranged on the barrel frame. And the outer wall of the cylinder frame is coated with filter cloth. Through cooperation of the structures and the rotatable design of the filtering structure, airflow to be filtered is in uniform contact with the filtering structure, meanwhile, solid particles can be prevented from being retained on the filtering structure under the centrifugal effect, and the separation efficiency of zinc powder is improved.

Description

Technical Field

[0001] This utility model relates to the field of zinc powder production technology, and in particular to an apparatus for preparing zinc powder by atomization. Background Technology

[0002] Zinc powder is a metal powder widely used in many fields. One of its preparation methods is to heat the metallic zinc through gas atomization, and then use a high-speed airflow to disperse the molten zinc into fine particles.

[0003] In current airflow atomization of zinc powder, the zinc powder moves at high speed with the airflow. During the separation of the airflow and zinc powder, the zinc powder easily clogs the filter structure, requiring personnel to clean the filter structure regularly, resulting in low separation efficiency of zinc powder.

[0004] To address this problem, we propose an apparatus for preparing zinc powder using an atomization method. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing an apparatus for preparing zinc powder by atomization.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an apparatus for preparing zinc powder by atomization, comprising a base plate, an atomizing shell, a shell, and a cylindrical frame. The atomizing shell and the shell are respectively provided on the upper surface of the base plate via support legs. The atomizing shell and the shell are interconnected. A material pipe is connected to the atomizing shell. A shaft tube is connected to the cylindrical frame. The shaft tube is rotatably mounted on the shell via a drive assembly. The outer wall of the cylindrical frame is covered with a filter cloth.

[0007] Preferably, a temperature sensor is provided inside the opening of the atomizing shell.

[0008] Preferably, the bottom end of the shell is provided with a discharge port, the bottom opening of the discharge port is provided with a collecting hopper, and the bottom opening of the collecting hopper is threaded with a cap.

[0009] Preferably, the cylindrical frame is located at the upper inner end of the housing, and the housing has a base hole adapted to the shaft tube, with the shaft tube rotatably mounted on the base hole.

[0010] Preferably, the drive assembly consists of a gear ring, a motor, and a base plate, with the gear ring disposed on the outer wall of the shaft tube.

[0011] Preferably, the substrate is disposed on the upper surface of the housing, the motor is disposed on the substrate, and the output end of the motor is provided with a gear, which is meshed with the gear ring.

[0012] Preferably, the atomizing shell is designed in a trumpet shape, and the trumpet opening of the atomizing shell is fixed to the outer wall of the shell.

[0013] Preferably, the lower surface of the base plate is provided with four support seats, and the four support seats are arranged in a rectangular array on the lower surface of the base plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] In the process of using the atomization method to prepare zinc powder, the molten zinc can be introduced into the atomization shell through the feed pipe. At this time, the atomization shell is connected to a strong external airflow, which is an inert gas that has been cooled and pressurized.

[0016] The airflow passes through the tubular end of the atomizing shell at near-sonic speed. During this process, the high-speed airflow disperses the molten zinc falling from the feed tube into fine particles, completing the atomization of zinc. The atomized zinc powder enters the trumpet end of the atomizing shell under the entrainment of the airflow, thereby reducing the pressure and slowing down the airflow before it enters the shell.

[0017] At this time, the motor drives the cylinder frame to rotate through the drive component. The airflow passes through the filter cloth and is discharged into the external recycling pipeline through the shaft tube. The zinc powder is obstructed and remains on the surface of the filter cloth. Under the centrifugal force of the rotating cylinder frame, the zinc powder is thrown away from the filter cloth. The zinc powder that falls into the shell finally gathers into the collection hopper under the action of gravity. Personnel can open the cover periodically to collect the zinc powder.

[0018] This invention, through the rotatable design of the filter structure, ensures uniform contact between the airflow to be filtered and the filter structure. At the same time, under centrifugal action, it can prevent solid particles from being retained on the filter structure, thereby improving the separation efficiency of zinc powder. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic cross-sectional view of the shell structure of this utility model;

[0021] Figure 3 This is a cross-sectional view of the atomizing shell of this utility model;

[0022] Figure 4 This is a schematic diagram of the drive component structure of this utility model.

[0023] Figure label:

[0024] 1. Support base; 2. Base plate; 3. Support leg; 4. Temperature sensor; 5. Material tube; 6. Atomizing shell; 7. Shell; 8. Gear ring; 9. Shaft tube; 10. Motor; 11. Base plate; 12. Cylinder frame; 13. Filter cloth; 14. Converging hopper; 15. Cover. Detailed Implementation

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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] Example 1

[0027] like Figures 1-4 As shown, the present invention proposes an apparatus for preparing zinc powder by atomization, comprising a base plate 2, an atomizing shell 6, a shell 7, and a cylinder frame 12. The upper surface of the base plate 2 is provided with the atomizing shell 6 and the shell 7 respectively via support legs 3. The atomizing shell 6 and the shell 7 are interconnected. A material pipe 5 is connected to the atomizing shell 6. A shaft tube 9 is connected to the cylinder frame 12. The shaft tube 9 is rotatably mounted on the shell 7 via a drive assembly. The outer wall of the cylinder frame 12 is covered with a filter cloth 13.

[0028] Based on Example 1:

[0029] In the process of using the atomization method to prepare zinc powder, the molten zinc can be introduced into the atomization shell 6 through the feed pipe 5. At this time, the atomization shell 6 is connected to a strong external airflow, which is an inert gas that has been cooled and pressurized.

[0030] The airflow passes through the tubular end of the atomizing shell 6 at near-sonic speed. When the high-speed airflow impacts the molten metal flow, the airflow applies a shear force to the metal. This shear force overcomes the surface tension of the metal, causing the metal flow to be broken into many small droplets. The metal droplets are further broken under the impact of the airflow, forming even smaller particles. Due to the temperature difference with the surrounding environment, they will cool and solidify rapidly. The high-speed airflow disperses the molten zinc falling from the feed pipe 5 into fine particles to complete the atomization of zinc. The atomized zinc powder enters the trumpet end of the atomizing shell 6 under the entrainment of the airflow, thereby reducing the pressure and slowing down the airflow before it enters the shell 7.

[0031] At this time, the motor 10 drives the cylinder frame 12 to rotate through the drive assembly. The airflow passes through the filter cloth 13 and is discharged into the external recovery pipeline through the shaft tube 9. The zinc powder is obstructed and remains on the surface of the filter cloth 13. Under the centrifugal force of the rotating cylinder frame 12, the zinc powder is thrown away from the filter cloth 13. The zinc powder that falls into the housing 7 finally gathers into the collection hopper 14 under the action of gravity. Personnel can periodically open the cover 15 to collect the zinc powder.

[0032] Example 2

[0033] like Figures 1-4 As shown, the apparatus for preparing zinc powder by atomization proposed in this utility model, compared with Embodiment 1, further includes: a temperature sensor 4 installed inside the opening end of the atomizing shell 6. During gas atomization, the particle cooling rate is very fast, which helps to maintain the fine size and sphericity of the powder. The cooling rate can be controlled by adjusting the gas temperature and flow rate. The temperature sensor 4 can detect the temperature of the high-speed gas flow before it comes into contact with molten zinc, thus facilitating the adjustment of the gas flow temperature by personnel.

[0034] The cylindrical frame 12 is located inside the upper part of the housing 7. The housing 7 has a base hole that matches the shaft tube 9. The shaft tube 9 is rotatably mounted on the base hole. The drive assembly consists of a gear ring 8, a motor 10, and a base plate 11. The gear ring 8 is located on the outer wall of the shaft tube 9, the base plate 11 is located on the upper surface of the housing 7, and the motor 10 is located on the base plate 11. The output end of the motor 10 is equipped with a gear. The gear and the gear ring 8 are in a gear-tooth meshing state. The motor 10 drives the gear to rotate. Through the meshing action between the gear and the gear ring 8, the shaft tube 9 is driven to rotate on the housing 7.

[0035] The atomizing shell 6 is designed in the shape of a trumpet. The trumpet opening of the atomizing shell 6 is fixed to the outer wall of the shell 7. The airflow passes through the tubular end of the atomizing shell 6 at a speed close to the speed of sound. The atomized zinc powder enters the trumpet end of the atomizing shell 6 under the entrainment of the airflow, thereby reducing the pressure and slowing down the airflow before it enters the shell 7.

[0036] The lower surface of the base plate 2 is provided with support bases 1. There are four support bases 1 in total, and the positions of the four support bases 1 are distributed in a rectangular array on the lower surface of the base plate 2.

[0037] The bottom of the shell 7 is provided with a discharge port, and a collection hopper 14 is installed at the bottom opening of the discharge port. The bottom opening of the collection hopper 14 is threaded with a cover 15. The zinc powder falling into the shell 7 is finally collected into the collection hopper 14 under the action of gravity. Personnel can periodically open the cover 15 to collect the zinc powder.

[0038] To further improve the quality of the powder, post-processing may be required, such as sieving, annealing, passivation, etc., to remove oversized or undersized particles and reduce impurities in the powder.

[0039] It should be noted that the temperature sensor 4 and motor 10 are existing mature technologies, and their working principles and internal structures are known to those skilled in the art. This utility model only utilizes their functions and does not improve their internal structures. Therefore, it will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0040] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0041] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An apparatus for preparing zinc powder by atomization, comprising a base plate (2), an atomizing shell (6), a housing (7), and a cylinder frame (12), characterized in that: The upper surface of the base plate (2) is provided with the atomizing shell (6) and the housing (7) respectively via the support legs (3). The atomizing shell (6) and the housing (7) are interconnected. The atomizing shell (6) is connected to the material pipe (5). The cylinder frame (12) is connected to the shaft tube (9). The shaft tube (9) is rotatably mounted on the housing (7) via the drive assembly. The outer wall of the cylinder frame (12) is covered with filter cloth (13).

2. The apparatus for preparing zinc powder by atomization according to claim 1, characterized in that: A temperature sensor (4) is provided inside the opening end of the atomizing shell (6).

3. The apparatus for preparing zinc powder by atomization according to claim 1, characterized in that: The bottom end of the housing (7) is provided with a discharge port, and a collection hopper (14) is installed at the bottom opening of the discharge port. The bottom opening of the collection hopper (14) is threaded with a cap (15).

4. The apparatus for preparing zinc powder by atomization according to claim 1, characterized in that: The tube frame (12) is located inside the upper part of the housing (7). The housing (7) has a base hole that is compatible with the shaft tube (9). The shaft tube (9) is rotatably mounted on the base hole.

5. The apparatus for preparing zinc powder by atomization according to claim 1, characterized in that: The drive assembly consists of a gear ring (8), a motor (10), and a base plate (11), with the gear ring (8) disposed on the outer wall of the shaft tube (9).

6. The apparatus for preparing zinc powder by atomization according to claim 5, characterized in that: The substrate (11) is disposed on the upper surface of the housing (7), the motor (10) is disposed on the substrate (11), and the output end of the motor (10) is provided with a gear, which is in a gear meshing state with the gear ring (8).

7. The apparatus for preparing zinc powder by atomization according to claim 1, characterized in that: The atomizing shell (6) is designed in the shape of a trumpet, and the trumpet opening of the atomizing shell (6) is fixed to the outer wall of the shell (7).

8. The apparatus for preparing zinc powder by atomization according to claim 1, characterized in that: The lower surface of the base plate (2) is provided with a support seat (1). There are four support seats (1) in total, and the positions of the four support seats (1) are distributed in a rectangular array on the lower surface of the base plate (2).

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