An on-line screening device for aluminum powder

Abstract

The utility model discloses a kind of aluminum powder online screening devices in the technical field of chemical equipment, comprising: fixed support, fixedly arranged on ground;Movable support, is located at the top of fixed support;Screening machine body, fixedly arranged in movable support, to screen aluminum powder with movable support vibration;Wherein, the top of screening machine body is equipped with feed inlet, bottom is equipped with first discharge port, side is equipped with second discharge port, feed inlet is located below aluminum powder atomization production line outlet, below first discharge port and second discharge port are equipped with valve, two valves are fixedly arranged on fixed support;Between feed inlet and aluminum powder atomization production line outlet, between first discharge port and corresponding valve, and between second discharge port and corresponding valve are all equipped with flexible connection. The flexible connection of the feed inlet of the device directly couples aluminum powder atomization production line outlet, allows aluminum powder to directly enter screening device from atomization process, supports aluminum powder online continuous screening.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically to an online aluminum powder screening device. Background Technology

[0002] Aluminum powder, as an important metallic powder material, is widely used in aerospace, 3D printing, powder metallurgy, chemical catalysts, electronic pastes, and other fields. Different applications have strict requirements on the particle size distribution of aluminum powder, therefore, sieving is an indispensable and critical process in aluminum powder production.

[0003] Currently, aluminum powder is mostly produced industrially using gas atomization or water atomization processes. However, the screening process and atomization production line are generally separated, meaning that the atomized aluminum powder must first be cooled and packaged before being manually or mechanically transported to independent screening equipment for further processing. This traditional process is intermittent, inefficient, and cannot achieve continuous production. It involves many intermediate steps, requiring additional packaging, storage, unpacking, and feeding operations, significantly increasing labor costs and equipment footprint. Furthermore, material loss is high, and oxidation or contamination can easily occur during transport.

[0004] To address these issues, an online aluminum powder screening device is provided. Utility Model Content

[0005] The purpose of this invention is to provide an online aluminum powder screening device, which solves the problems of continuous production failure, high labor costs, and large material losses caused by the separation of the traditional aluminum powder screening process from the atomization production line.

[0006] This utility model achieves the above objectives through the following technical solutions: An online aluminum powder screening device includes: A fixed bracket is installed on the ground. A movable support is located on top of the fixed support; The sieve body is fixedly installed inside the movable support so as to sieve aluminum powder as the movable support vibrates. The sieve body has a feed inlet at the top, a first discharge outlet at the bottom, and a second discharge outlet on the side. The feed inlet is located below the discharge outlet of the aluminum powder atomization production line. Valves are provided below both the first and second discharge outlets, and both valves are fixedly mounted on a fixed bracket. Flexible connections are provided between the feed inlet and the discharge outlet of the aluminum powder atomization production line, between the first discharge outlet and the corresponding valve, and between the second discharge outlet and the corresponding valve.

[0007] As a further optimization of this utility model, the movable bracket includes a mounting ring and a plurality of springs fixedly disposed circumferentially at the bottom of the mounting ring, the bottom end of the springs being fixedly disposed at the top of the fixed bracket; a vibration motor is provided on both sides of the mounting ring.

[0008] As a further optimization of this utility model, it also includes multiple annular suction hoods disposed on the periphery of each flexible connection. The annular suction hoods are fixedly mounted on a fixed bracket by means of a support plate. The inner wall of the annular suction hoods is provided with multiple suction holes evenly distributed in the circumferential direction. One side of the annular suction hoods is provided with a suction interface for connecting to an external dust removal system.

[0009] As a further optimization of this utility model, the annular suction hood is further provided with an electrostatic elimination unit for eliminating static electricity on the surface of the flexible connection; the electrostatic elimination unit includes a rotating cylinder rotatably disposed on the inner wall of the annular suction hood, multiple sets of electrostatic elimination brushes fixedly disposed on the inner wall of the rotating cylinder, and a driving unit for driving the rotating cylinder to rotate circumferentially along the flexible connection, wherein the bristles of the electrostatic elimination brushes abut against the surface of the flexible connection.

[0010] As a further optimization of this utility model, the flexible connection is configured as an antistatic connection with conductivity.

[0011] As a further optimization of this utility model, the annular suction hood is also provided with multiple sets of actuating units evenly distributed along the periphery of the flexible connection. The actuating units are used to periodically actuate the flexible connection to prevent material accumulation and blockage. The actuating unit includes a bearing seat fixed on the inner wall of the annular suction hood, a sector gear rotatably mounted on the bearing seat, and an actuating rod fixed on the sector gear. A reset torsion spring is provided on the rotating shaft of the sector gear.

[0012] As a further optimization of this utility model, the top of the rotating drum is fixedly provided with an arc-shaped rack that meshes with the sector gear.

[0013] The beneficial effects of this utility model are as follows: 1. The flexible connection of this utility model realizes the flexible connection between the screening machine body and the upstream and downstream equipment, effectively isolating vibration transmission. The flexible connection of the feed inlet is directly coupled to the feed outlet of the aluminum powder atomization production line, allowing aluminum powder to directly enter the screening device from the atomization process. It supports online continuous screening of aluminum powder, solving the problems of continuous production failure, high labor costs, and large material loss caused by the separation of the traditional aluminum powder screening process and the atomization production line. It realizes the integrated continuous production of atomization and screening, shortens the process flow, and reduces the risk of oxidation and pollution in intermediate links.

[0014] 2. This utility model integrates a ring-shaped suction hood, an electrostatic elimination unit, and a toggle unit on the periphery of the flexible connection to achieve the functions of preventing dust escape, eliminating static electricity, and preventing material accumulation and blockage, ensuring continuous and stable powder feeding and improving the safety of device operation. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the sieve body structure of this utility model; Figure 3 This is a schematic diagram of the fixed bracket and movable bracket structure of this utility model; Figure 4 This is a three-dimensional schematic diagram of the overall structure of the annular suction hood of this utility model; Figure 5 This is a top view of the overall structure of the annular suction hood of this utility model; Figure 6 This is a schematic diagram of the static elimination unit and the toggle unit of this utility model.

[0016] In the picture: 1. Fixed bracket; 2. Movable bracket; 201. Mounting ring; 202. Spring; 203. Vibrating motor; 3. Screening machine body; 301. Feed inlet; 302. First discharge outlet; 303. Second discharge outlet; 304. Valve; 305. Flexible connection; 4. Annular suction hood; 401. Suction hole; 402. Suction interface; 5. Static elimination unit; 501. Rotary drum; 502. Drive unit; 503. Static elimination brush; 504. Arc rack; 6. Actuating unit; 601. Sector gear; 602. Actuating rod; 603. Bearing seat. Detailed Implementation

[0017] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0018] Example 1 To address the issues of discontinuous production, high labor costs, and significant material loss caused by the separation of the traditional aluminum powder screening process from the atomization production line, please refer to [link / reference needed]. Figures 1-3 The present invention provides an online aluminum powder screening device, comprising: Fixed bracket 1 is fixedly installed on the ground; The movable bracket 2 is located on top of the fixed bracket 1; The screening machine body 3 is fixedly installed inside the movable support 2 so as to screen aluminum powder as the movable support 2 vibrates. The sieve body 3 has a feed inlet 301 at the top, a first discharge outlet 302 at the bottom, and a second discharge outlet 303 on the side. The feed inlet 301 is located below the discharge port of the aluminum powder atomization production line. Valves 304 are provided below both the first discharge outlet 302 and the second discharge outlet 303. Both valves 304 are fixedly mounted on the fixed bracket 1. Flexible connections 305 are provided between the feed inlet 301 and the discharge port of the aluminum powder atomization production line, between the first discharge outlet 302 and the corresponding valve 304, and between the second discharge outlet 303 and the corresponding valve 304.

[0019] The fixed bracket 1 consists of four support legs and an upper annular plate. The support legs are 1200mm high and the annular plate is 1250mm in diameter.

[0020] The movable support 2 includes a mounting ring 201 and multiple springs 202 fixedly disposed circumferentially at the bottom of the mounting ring 201. The bottom end of the springs 202 is fixedly disposed at the top of the fixed support 1. Vibration motors 203 are provided on both sides of the mounting ring 201.

[0021] In use, aluminum powder enters the screen body 3 from the atomization production line feed port through the feed inlet 301. The vibration motor 203 starts, driving the mounting ring 201 to vibrate at high frequency under the support of the spring 202, which in turn drives the screen body 3 to vibrate synchronously up, down and left and right. Fine powder that meets the mesh size requirements passes through the screen and is discharged from the first discharge port 302 at the bottom. It then enters the packaging bag through the flexible connection 305 and the valve 304. Coarse powder that does not meet the mesh size requirements is discharged from the second discharge port 303 on the side and also enters the corresponding packaging bag through the corresponding flexible connection 305 and the valve 304.

[0022] Valve 304 is fixed to the fixed bracket 1 and will not shake due to the vibration of the screening machine body 3, ensuring that the packaging bag receives the material stably and avoiding spillage. Valve 304 can control and switch packaging bags at any time. When the packaging bag is full, valve 304 can be closed and a new packaging bag can be replaced. Production can continue without interruption.

[0023] The flexible connection 305 can isolate vibration transmission and adapt to the multi-directional micro-amplitude vibration displacement generated by the screen body 3 during operation, preventing structural fatigue, sealing failure or interface breakage caused by rigid connection. Furthermore, the flexible connection 305 of the feed inlet 301 connects the screen body 3 to the feed outlet of the upstream aluminum powder atomization production line. While achieving vibration isolation, it allows aluminum powder to directly enter the screening device from the atomization process, solving the problems of continuous production failure, high labor costs and large material loss caused by the separation of the traditional aluminum powder screening process and the atomization production line. It realizes integrated continuous production of atomization and screening, shortens the process flow, and reduces the risk of oxidation and pollution in intermediate links.

[0024] To address the issue of dust-laden gas escaping from flexible connector 305, prevent dust from spreading to the surrounding environment, control the risk of combustible dust accumulation, and ensure production safety, such as... Figures 4-5 As shown, it also includes multiple annular suction hoods 4 disposed around each flexible connection 305. The annular suction hoods 4 are fixedly mounted on the fixed bracket 1 by means of a support plate. Multiple suction holes 401 are provided on the inner wall of the annular suction hoods 4 evenly distributed in the circumferential direction to ensure that airflow in all directions can be sucked in. A suction interface 402 for connecting to an external dust removal system is provided on one side of the annular suction hoods 4.

[0025] The annular suction hood 4 captures the escaping dust-laden gas through the suction holes 401 and connects to the external dust removal system through the suction interface 402 to prevent dust from spreading. The annular suction hood 4 forms a collection area outside the flexible connection 305 to immediately suck up the dust-laden gas that escapes due to material permeability, structural deformation, or loose interfaces, preventing aluminum powder dust from spreading to the surrounding environment of the equipment, effectively controlling the risk of flammable dust accumulation, and ensuring production safety.

[0026] Example 2 Based on Example 1, in order to address the problem that aluminum powder easily generates static electricity and adheres to the inner wall of the flexible connector 305, posing a risk of ignition and explosion, such as... Figures 4-6 As shown, the annular suction hood 4 is also equipped with an electrostatic elimination unit 5 for eliminating static electricity on the surface of the flexible connection 305, so as to prevent electrostatic discharge from igniting aluminum powder.

[0027] The static eliminator unit 5 includes a rotating cylinder 501 rotatably mounted on the inner wall of the annular suction hood 4, multiple sets of static eliminator brushes 503 fixedly mounted on the inner wall of the rotating cylinder 501, and a drive unit 502 for driving the rotating cylinder 501 to rotate circumferentially along the flexible connection 305. The bristles of the static eliminator brushes 503 abut against the surface of the flexible connection 305. The flexible connection 305 is designed as a conductive antistatic connection, such as using conductive fiber-reinforced polyurethane material with internally braided stainless steel wire, and grounded through a wire to prevent static electricity accumulation.

[0028] The bristles of the static elimination brush 503 lightly touch the surface of the flexible connector 305, dissipating static electricity through contact. The drive unit 502 drives the rotating drum 501 to slowly rotate around the circumference of the flexible connector 305, ensuring uniform conductivity throughout the circumference. The static elimination unit 5 effectively dissipates the charge accumulated on the surface of the flexible connector 305 due to the high-speed flow, friction, and vibration of aluminum powder, preventing the electrostatic discharge energy from igniting the suspended aluminum powder and eliminating the risk of combustion and explosion.

[0029] Furthermore, the drive unit 502 may adopt a gear transmission system, such as including a gear ring fixedly disposed at the bottom of the rotating drum 501, a gear meshing with the gear ring, and a motor for driving the gear to rotate, the motor being fixedly disposed on the outer wall of the annular suction hood 4.

[0030] Example 3 Based on Examples 1 and 2, in order to prevent aluminum powder from bridging, caking, or localized accumulation on the inner wall of the flexible connector 305 due to electrostatic adsorption, humidity, or prolonged vibration, such as... Figures 4-6 As shown, the annular suction hood 4 is also provided with multiple sets of actuating units 6 evenly distributed along the periphery of the flexible connection 305. The actuating units 6 are used to periodically actuate the flexible connection 305 to prevent material accumulation and blockage, and to prevent aluminum powder from forming rat holes or bridging on the inner wall of the flexible connection 305 due to electrostatic adsorption or humidity adhesion.

[0031] The actuating unit 6 includes a bearing seat 603 fixedly mounted on the inner wall of the annular suction hood 4, a sector gear 601 rotatably mounted on the bearing seat 603, and an actuating lever 602 fixedly mounted on the sector gear 601. A return torsion spring is provided on the rotating shaft of the sector gear 601. An arc-shaped rack 504 that meshes with the sector gear 601 is fixedly mounted on the top of the rotating cylinder 501.

[0032] When the drum 501 rotates, the arc-shaped rack 504 rotates to mesh with the sector gear 601, driving the sector gear 601 to rotate, which in turn drives the actuating rod 602 to rotate, actuating the flexible connection 305. When the arc-shaped rack 504 separates from the sector gear 601, the actuating rod 602 is reset under the action of the return torsion spring. As the drum 501 rotates, multiple actuating units 6 actuate different positions on the periphery of the flexible connection 305 to prevent powder bridging or blockage. The periodic mechanical disturbance by the actuating units 6 prevents aluminum powder from bridging, caking, or local accumulation on the inner wall of the flexible connection 305 due to electrostatic adsorption, humidity, or long-term vibration, avoiding the formation of rat holes or blockage of the channel, and ensuring continuous and stable powder feeding.

[0033] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. An online aluminum powder screening device, characterized in that, include: Fixed bracket (1) is fixedly installed on the ground; The movable bracket (2) is located on top of the fixed bracket (1); The sieve body (3) is fixedly installed inside the movable support (2) so as to sieve aluminum powder as the movable support (2) vibrates; The screen body (3) has a feed inlet (301) at the top, a first discharge outlet (302) at the bottom, and a second discharge outlet (303) on the side. The feed inlet (301) is located below the discharge outlet of the aluminum powder atomization production line. Valves (304) are provided below the first discharge outlet (302) and the second discharge outlet (303). Both valves (304) are fixedly mounted on the fixed bracket (1). Flexible connections (305) are provided between the feed inlet (301) and the discharge port of the aluminum powder atomization production line, between the first discharge port (302) and the corresponding valve (304), and between the second discharge port (303) and the corresponding valve (304).

2. The online aluminum powder screening device according to claim 1, characterized in that, The movable bracket (2) includes a mounting ring (201) and a plurality of springs (202) fixedly disposed circumferentially at the bottom of the mounting ring (201), the bottom end of the springs (202) being fixedly disposed at the top of the fixed bracket (1); Vibration motors (203) are provided on both sides of the mounting ring (201).

3. The online aluminum powder screening device according to claim 1, characterized in that, It also includes multiple annular suction hoods (4) disposed around each flexible connection (305), the annular suction hoods (4) being fixedly mounted on the fixed bracket (1) by means of a support plate; The inner wall of the annular suction hood (4) is provided with a plurality of suction holes (401) evenly distributed in the circumferential direction, and one side of the annular suction hood (4) is provided with a suction interface (402) for connecting to an external dust removal system.

4. The online aluminum powder screening device according to claim 3, characterized in that, The annular suction hood (4) is also provided with an electrostatic elimination unit (5) for eliminating static electricity on the surface of the flexible connector (305). The static elimination unit (5) includes a rotating cylinder (501) rotatably mounted on the inner wall of the annular suction hood (4), multiple sets of static elimination brushes (503) fixed on the inner wall of the rotating cylinder (501), and a drive unit (502) for driving the rotating cylinder (501) to rotate circumferentially along the flexible connection (305). The bristles of the static elimination brushes (503) abut against the surface of the flexible connection (305).

5. The online aluminum powder screening device according to claim 1, characterized in that, The flexible connection (305) is configured as an antistatic connection with conductivity.

6. The online aluminum powder screening device according to claim 4, characterized in that, The annular suction hood (4) is also provided with multiple sets of actuating units (6) evenly distributed along the periphery of the flexible connector (305). The actuating units (6) are used to periodically actuate the flexible connector (305) to prevent material accumulation and blockage. The actuation unit (6) includes a bearing seat (603) fixed on the inner wall of the annular suction hood (4), a sector gear (601) rotatably mounted on the bearing seat (603), and an actuation rod (602) fixed on the sector gear (601). A reset torsion spring is provided on the rotating shaft of the sector gear (601).

7. The online aluminum powder screening device according to claim 6, characterized in that, The top of the rotating drum (501) is fixedly provided with an arc-shaped rack (504) that meshes with the sector gear (601).

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