Atomizing equipment for producing aluminum powder

Abstract

The application discloses an atomization equipment for aluminum powder production and relates to the technical field of aluminum powder atomization.The atomization equipment comprises an atomization tank, a tundish arranged on the top of the atomization tank and a nozzle arranged on the inner top of the atomization tank, two groups of elastic collecting components are symmetrically arranged in the atomization tank, the installation positions of the two groups of elastic collecting components are located directly below the nozzle, and the elastic collecting components can swing up and down closely to the inner wall of the atomization tank.The application is provided with a tension and pressure sensor arranged between the elastic collecting plate and the sticking rod, can collect the airflow deformation difference and stress data of the double-sided plate in real time, can accurately determine the airflow pressure, flow, centring property and stability of the nozzle, can perform self-checking and online monitoring during the whole process, can identify the nozzle blockage, airflow deflection, air source fluctuation and other faults in advance, can avoid quality problems such as uneven atomization, powder particle size deviation and agglomeration from the source, and can greatly improve the qualified rate and quality stability of finished products.

Description

Technical Field

[0001] This invention relates to the field of aluminum powder atomization technology, and more specifically to an atomization device for aluminum powder production. Background Technology

[0002] Gas atomization is currently the mainstream process for industrial production of fine aluminum powder. Its principle involves breaking molten aluminum into tiny droplets by high-pressure inert gas. These droplets rapidly cool and solidify within a sealed atomization chamber to form aluminum powder, which is then collected and sieved. Existing aluminum powder atomization equipment typically has a fixed collection plate inside the atomization chamber to capture suspended aluminum mist and retain fine aluminum powder.

[0003] Currently, traditional atomizing equipment sprays directly from the bottom of the device. The cone-shaped aluminum mist emitted from the atomizing nozzles has a large number of collection blind spots, and ultrafine aluminum powder easily escapes with the airflow, resulting in a low overall aluminum powder recovery rate. At the same time, the fine aluminum powder has strong electrostatic adsorption and adhesion, and long-term accumulation of powder on the fixed plate surface can easily cause caking. It can only be cleaned manually by stopping the machine and blowing it out, which seriously affects the continuity of production, has high manual maintenance costs, and opening the cover to clean the powder can easily cause secondary dust, posing a dust explosion safety hazard.

[0004] Meanwhile, existing equipment lacks online self-inspection capabilities for nozzle airflow, making it impossible to identify abnormal operating conditions such as air source pressure fluctuations, unstable flow, airflow deviation, and nozzle blockage in real time. Once the air source becomes disordered, it will directly lead to uneven atomization and breakage of aluminum liquid, large particle size dispersion of aluminum powder, and powder agglomeration, which can easily produce batches of defective products, resulting in poor production stability and difficulty in controlling the quality of finished products.

[0005] Furthermore, the existing equipment lacks a targeted emergency flow stabilization structure. When the gas source suddenly becomes unstable, the equipment has no buffer or fault tolerance mechanism and can only be shut down in an emergency. This not only interrupts production but also causes a large amount of material waste and safety risks due to the spread of turbulent flow within the warehouse, leaving staff with insufficient time to react and handle the situation. Summary of the Invention

[0006] The purpose of this invention is to provide an atomization device for aluminum powder production in order to solve the above problems.

[0007] To achieve the above objectives, the present invention specifically adopts the following technical solution: An atomizing device for aluminum powder production includes an atomizing tank, an intermediate liner disposed at the top of the atomizing tank, and a nozzle disposed at the top inside the atomizing tank. Two sets of elastic collection components are symmetrically arranged inside the atomizing tank. The two sets of elastic collection components are installed directly below the nozzle. The elastic collection components can swing up and down close to the inner wall of the atomizing tank. During the swinging process, the elastic collection components can switch between a flat state and a wavy deformation state. This not only enables the interception and collection of aluminum mist and the automatic peeling of aluminum powder from the plate surface, but also allows for online detection of the airflow status at the nozzle outlet by means of the deformation force generated by the airflow impact.

[0008] Furthermore, the elastic collection assembly includes a swing frame hinged inside the atomizing can, a telescopic rod suspended at the bottom of the swing frame, a stick hinged to the telescopic end of the telescopic rod, an elastic collection plate between the stick and the swing frame, and a tension / compression sensor between the elastic collection plate and the stick. The sensor is used to collect in real time the deformation force generated by the impact of the airflow from the nozzle on the elastic collection plate. A lifting drive is installed on the outside of the atomizing can, and the telescopic end of the lifting drive passes through the atomizing can and is connected to the bottom of the stick. A powder discharge port is opened in the middle of the swing frame.

[0009] Furthermore, the bottom of the elastic collecting plate is provided with elastic ribs, which are wavy when not under force.

[0010] Furthermore, the swing frame and the elastic collection plate are in close contact with the inner wall of the atomizing can.

[0011] Furthermore, the top surface of the adhesive rod is angled downwards.

[0012] Furthermore, the interior of the swing frame is provided with a storage groove. One end of the elastic collecting plate is fixedly connected to the stick, and the other end is provided with a straight plate. The straight plate is inserted into the storage groove. A return spring is provided between the straight plate and the inner wall of the storage groove. The elastic force of the return spring is greater than the elastic force of the elastic collecting plate. An insertion hole is provided inside the straight plate. A locking device is fixedly installed at the bottom of the swing frame. The telescopic end of the locking device can pass through the insertion hole.

[0013] Furthermore, the storage slot is inclined, which allows for a smooth transition at the connection between the elastic collection plate and the swing frame.

[0014] Furthermore, a control and judgment module is provided on the outside of the atomizing can. The control and judgment module presets the qualified deformation range of the airflow and the maximum allowable difference in deformation between the two sets of elastic collection plates. It compares the real-time data collected by the sensor with the preset parameters to complete the compliance judgment of the nozzle airflow rate, airflow pressure, airflow alignment and airflow stability.

[0015] Furthermore, the surface of the elastic collecting plate is coated with an antistatic and wear-resistant coating, which, combined with elastic deformation, can quickly peel off the aluminum powder adhering to the surface, avoiding safety hazards caused by the accumulation of aluminum powder.

[0016] The beneficial effects of this invention are as follows: 1. This invention, by setting tension and pressure sensors between the elastic collecting plate and the stick, collects the airflow deformation difference and force data on both sides of the plate in real time. It can accurately determine the nozzle airflow pressure, flow rate, alignment and stability. The self-test upon startup and online monitoring throughout the process can identify faults such as nozzle blockage, airflow deviation, and air source fluctuation in advance, avoiding quality problems such as uneven atomization, powder particle size deviation, and agglomeration from the source, and greatly improving the finished product qualification rate and quality stability.

[0017] 2. This invention utilizes a pre-fabricated wave-shaped base with elastic ribs, combined with a lifting drive, telescopic rod, and rod-attaching linkage structure, to achieve dynamic switching between low-level wave-shaped mist collection and high-level straight-plate powder falling. The wave shape increases the aluminum mist contact area, comprehensively enveloping the conical mist flow, eliminating collection blind spots, and improving aluminum powder recovery rate; the flat, inclined shape utilizes the plate's tilt angle and deformation rebound vibration to achieve automatic sliding and complete peeling of aluminum powder, eliminating the need for manual shutdown for cleaning, significantly improving production continuity, and reducing operation and maintenance costs.

[0018] 3. The present invention uses two sets of elastic collection components symmetrically arranged, and the relative position of the nozzle changes dynamically in real time during the swing process. This can adapt to the entire process of mist diffusion, balance the airflow field in the chamber, eliminate the vortex dead zone and local aluminum mist enrichment problem of traditional fixed structure, make the aluminum droplet cooling and solidification more uniform, and significantly improve the sphericity and particle size consistency of the powder.

[0019] 4. When unstable gas supply or turbulent airflow is detected, the locking mechanism unlocks and, in conjunction with the lifting drive, the two plates close together and lock in place, forming a centrally located flexible protective barrier that quickly regulates turbulent flow and suppresses mist diffusion. After closing, the plates rely on their own elasticity to achieve micro-angle adaptive opening and closing. Strong airflow causes pressure release, while weak airflow causes mist accumulation, dynamically stabilizing the atomization process. No emergency shutdown is required, providing ample reaction time for staff to check the gas supply, adjust parameters, and troubleshoot, thus preventing batch defects and sudden safety accidents. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the internal structure of the atomizing can of the present invention; Figure 2 This is a schematic diagram of the elastic collection component of the present invention. Figure 1 ; Figure 3 This is a schematic diagram of the elastic collection component of the present invention. Figure 2 ; Figure 4 This is an exploded view of the elastic collection component structure of the present invention.

[0021] Reference numerals: 1. Atomizing can; 2. Intermediate pack; 3. Nozzle; 4. Elastic collection assembly; 41. Frame; 411. Powder discharge port; 412. Storage slot; 42. Telescopic rod; 43. Sticking rod; 44. Elastic collection plate; 441. Elastic rib; 442. Straight plate section; 443. Insertion hole; 444. Return spring; 45. Locking device; 5. Lifting drive. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0023] Example 1, as Figures 1-4 As shown, an atomizing device for aluminum powder production includes an atomizing tank 1, an intermediate package 2 disposed at the top of the atomizing tank 1, and a nozzle 3 disposed at the top inside the atomizing tank 1. Two sets of elastic collection components 4 are symmetrically arranged inside the atomizing tank 1. The installation positions of the two sets of elastic collection components 4 are located directly below the nozzle 3. The elastic collection components 4 can swing up and down closely against the inner wall of the atomizing tank 1. During the swinging process, the elastic collection components 4 can switch between a flat state and a wave-shaped deformation state, which can not only achieve aluminum mist interception and collection and automatic peeling of aluminum powder from the plate surface, but also complete the online detection of the airflow status of the nozzle 3 by means of the deformation force generated by the airflow impact.

[0024] Equipment self-test mode: After power-on, it first enters the airflow detection mode. The elastic collection component 4 remains stationary. The sensor measures the deformation of the elastic collection component 4 under the impact of airflow and the difference in deformation between the left and right elastic collection components 4 in real time. The control module completes the detection of airflow pressure, flow rate, centering and stability. After the detection is qualified, it automatically switches to the powder collection mode. It can identify problems such as nozzle 3 blockage, airflow deviation and air source failure in advance, effectively avoid the generation of batch defective powder products and ensure uniform particle size and stable quality of products.

[0025] Production Mode: In powder collection mode, the elastic collection component 4 oscillates back and forth at a frequency of 2Hz-5Hz. The lower swing converges to form a concave wave structure, increasing the contact area of ​​aluminum mist, enveloping the conical mist flow, and improving collection efficiency. The upper swing extends and returns to its original position, relying on deformation stress and vibration to achieve automatic peeling of aluminum powder, eliminating the need for manual cleaning. At the same time, the relative position of the elastic collection component 4 plate and the nozzle 3 changes dynamically during the oscillation process, covering the mist diffusion path in all directions and completely eliminating collection blind spots.

[0026] Example 2, based on the above examples, further includes an elastic collection component 4 comprising a swing frame 41 hinged inside the atomizing can 1, a telescopic rod 42 suspended at the bottom of the swing frame 41, a connecting rod 43 hinged to the telescopic end of the telescopic rod 42, an elastic collection plate 44 disposed between the connecting rod 43 and the swing frame 41, a tension / compression sensor disposed between the elastic collection plate 44 and the connecting rod 43, the sensor being used to collect in real time the deformation force generated by the elastic collection plate 44 being impacted by the airflow ejected from the nozzle 3, a lifting drive 5 (which can be a cylinder or a hydraulic cylinder) is installed on the outside of the atomizing can 1, the telescopic end of the lifting drive 5 passing through the atomizing can 1 and connected to the bottom of the connecting rod 43, and a powder discharge port 411 is provided in the middle of the swing frame 41.

[0027] The bottom of the elastic collection plate 44 is provided with an elastic rib 441, which is wavy when not under force. When the sticking rod 43 is brought close to the swing frame 41, the elastic collection plate 44 can stably become wavy. The swing frame 41 and the elastic collection plate 44 are in close contact with the inner wall of the atomizing can 1 to ensure sealing. The top surface of the sticking rod 43 is set at an angle downward to prevent aluminum powder from accumulating on the surface of the sticking rod 43 and to more effectively clean the inner wall of the atomizing can 1.

[0028] A control and judgment module is set on the outside of the atomizing can 1. The control and judgment module presets the qualified deformation range of the airflow and the maximum allowable difference in deformation of the two sets of elastic collection plates 44. It compares the real-time data collected by the sensor with the preset parameters to complete the compliance judgment of the airflow rate, airflow pressure, airflow alignment and airflow stability of the nozzle 3.

[0029] The surface of the elastic collection plate 44 is coated with an anti-static and wear-resistant coating. Combined with its elastic deformation, it can quickly peel off the aluminum powder adhering to the surface, avoiding the safety hazards caused by the accumulation of aluminum powder.

[0030] Production mode: The lowest position of the elastic collecting plate 44 is wavy. During the collection process, the lifting drive 5 is controlled to move. The lifting drive 5 drives the sticking rod 43 to move vertically upward along the atomizing tank 1. The sticking rod 43 drives the swing frame 41 to swing upward through the elastic collecting plate 44 and the telescopic rod 42. The telescopic rod 42 provides rigid transmission. The sticking rod 43 moves away from the swing frame 41. The sticking rod 43 stretches the elastic collecting plate 44. The elastic collecting plate 44 changes from wavy to straight. The straight plate is in an inclined state, and the aluminum powder on it is easier to fall into the storage space below the atomizing tank 1 through the powder discharge port 411. The straight plate also collects aluminum powder stably. When the lifting drive 5 drives the sticking rod 43 to descend, the elastic collecting plate 44 becomes wavy again. Some of the aluminum powder stuck to the straight plate is automatically peeled off by the deformation stress and vibration of the elastic collecting plate 44.

[0031] In embodiment three, based on the above embodiments, the following is also included: the interior of the swing frame 41 is provided with a storage groove 412; one end of the elastic collecting plate 44 is fixedly connected to the stick 43, and the other end is provided with a straight plate part 442, which is inserted into the storage groove 412; a return spring 444 is provided between the straight plate part 442 and the inner wall of the storage groove 412; the elastic force of the return spring 444 is greater than the elastic force of the elastic collecting plate 44; an insertion hole 443 is provided inside the straight plate part 442; and a locking device 45 (which can be a cylinder or a hydraulic cylinder) is fixedly installed at the bottom of the swing frame 41; the telescopic end of the locking device 45 can pass through the insertion hole 443.

[0032] The storage slot 412 is inclined, which allows for a smooth transition at the connection between the elastic collection plate 44 and the swing frame 41.

[0033] During production, when the equipment detects faults such as airflow fluctuations, abnormal pressure, or airflow deviation, an emergency protection mechanism is immediately triggered: the telescopic end of the locking device 45 is pulled out of the insertion hole 443, the lifting drive 5 drives the sticking rod 43 to rise, and the elastic collecting plate 44 first becomes a straight plate, which is the highest position of production swing. Then the sticking rod 43 continues to move upward, and two-thirds of the straight plate part 442 is pulled out of the collection slot 412. At this time, the two sets of elastic collecting plates 44 approach the nozzle 3, close together and lock upward, stopping the reciprocating swing and forming a central flexible protective barrier to regulate the turbulent airflow in the chamber. The closed elastic collecting plate 44 has the ability to adapt to elasticity. When the airflow impact force is large, it automatically slightly expands and depressurizes; when the airflow impact force is small, it automatically tightens and concentrates mist, dynamically adapting to unstable airflow conditions, continuously stabilizing the atomization environment, avoiding poor powder quality, material loss, and safety hazards, and allowing sufficient processing time for staff to inspect the air source and adjust equipment parameters. After the fault is eliminated and the airflow parameters are restored to the standard, the equipment automatically unlocks, the elastic collecting plate 44 resets, and normal production conditions are restored.

[0034] 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. An atomizing device for aluminum powder production, comprising an atomizing tank (1), an intermediate package (2) disposed at the top of the atomizing tank (1), and a nozzle (3) disposed at the top inside the atomizing tank (1), characterized in that, The atomizing can (1) is symmetrically equipped with two sets of elastic collection components (4). The two sets of elastic collection components (4) are installed directly below the nozzle (3). The elastic collection components (4) can swing up and down close to the inner wall of the atomizing can (1). During the swinging process, the elastic collection components (4) can switch between a flat state and a wave-shaped deformation state. It can not only intercept and collect aluminum mist and automatically peel off aluminum powder from the plate, but also use the deformation force generated by the airflow impact to complete the online detection of the airflow status of the nozzle (3).

2. The atomizing equipment for aluminum powder production according to claim 1, characterized in that, The elastic collection component (4) includes a swing frame (41) hinged inside the atomizing can (1). A telescopic rod (42) is suspended at the bottom of the swing frame (41). A stick (43) is hinged to the telescopic end of the telescopic rod (42). An elastic collection plate (44) is provided between the stick (43) and the swing frame (41). A tension and pressure sensor is provided between the elastic collection plate (44) and the stick (43). The sensor is used to collect the deformation force generated by the elastic collection plate (44) under the impact of the airflow ejected from the nozzle (3) in real time. A lifting drive (5) is installed on the outside of the atomizing can (1). The telescopic end of the lifting drive (5) passes through the atomizing can (1) and is connected to the bottom of the stick (43). A powder discharge port (411) is opened in the middle of the swing frame (41).

3. The atomizing equipment for aluminum powder production according to claim 2, characterized in that, The bottom of the elastic collecting plate (44) is provided with an elastic rib (441), which is wavy when not under force.

4. The atomizing equipment for aluminum powder production according to claim 3, characterized in that, The swing frame (41) and the elastic collection plate (44) are closely attached to the inner wall of the atomizing tank (1).

5. The atomizing equipment for aluminum powder production according to claim 4, characterized in that, The top surface of the stick (43) is set diagonally downward.

6. The atomizing equipment for aluminum powder production according to claim 5, characterized in that, The inside of the swing frame (41) is provided with a storage groove (412). One end of the elastic collecting plate (44) is fixedly connected to the stick (43), and the other end is provided with a straight plate part (442). The straight plate part (442) is inserted into the storage groove (412). A return spring (444) is provided between the straight plate part (442) and the inner wall of the storage groove (412). The elastic force of the return spring (444) is greater than the elastic force of the elastic collecting plate (44). The inside of the straight plate part (442) is provided with an insertion hole (443). A locking device (45) is fixedly installed at the bottom of the swing frame (41). The telescopic end of the locking device (45) can pass through the insertion hole (443).

7. The atomizing equipment for aluminum powder production according to claim 6, characterized in that, The storage slot (412) is inclined, and the storage slot (412) allows for a smooth transition at the connection between the elastic collection plate (44) and the swing frame (41).

8. The atomizing equipment for aluminum powder production according to claim 7, characterized in that, The atomizing can (1) is provided with a control and judgment module on its outer side. The control and judgment module presets the qualified deformation range of the airflow and the maximum allowable difference in deformation of the two sets of elastic collection plates (44). It compares the real-time data collected by the sensor with the preset parameters to complete the compliance judgment of the airflow flow rate, airflow pressure, airflow alignment and airflow stability of the nozzle (3).

9. An atomizing device for aluminum powder production according to any one of claims 2-8, characterized in that, The surface of the elastic collecting plate (44) is sprayed with an antistatic and wear-resistant coating. With the help of elastic deformation, it can quickly peel off the aluminum powder attached to the surface, avoiding the safety hazards caused by the accumulation of aluminum powder.

Images