Nitrogen atomization equipment for aluminum powder production

Abstract

The utility model relates to nitrogen atomizing equipment for aluminum powder production, which comprises an atomizing chamber, a nitrogen atomizing nozzle and a receiving hopper, and is technically characterized in that a motor is fixed at the top of the atomizing chamber, and a cone pulley which is wide in top and narrow in bottom and is connected with the output end of the motor is arranged in the atomizing chamber; the center line of the nitrogen atomizing nozzle is parallel to the horizontal plane, a nozzle opening points to the middle of the cone pulley, the vertical plane where the center line of the cone pulley is located coincides with the vertical plane where the center line of the nitrogen atomizing nozzle is located, a support is arranged on the side wall, opposite to the side wall where the nitrogen atomizing nozzle is located, in the atomizing chamber, and a brush making contact with the cone pulley is arranged on the support. A dust overflowing opening is fixed to the top of the atomizing chamber, a backflow pipe inclining downwards is arranged on the lower portion of the side wall of the atomizing chamber, the outer end of the backflow pipe is communicated with the outer end of the dust overflowing opening through an external pipeline, a pressure reducing valve is arranged on the external pipeline, and a horizontal spiral conveyor communicated with the lower end of the material receiving hopper is fixed to the bottom of the atomizing chamber. According to the equipment, bonded powder is cleaned in time, waste is avoided, and collection of the powder is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of metal powder preparation technology, specifically to a nitrogen atomization device for aluminum powder production. Background Technology

[0002] In the production of aluminum powder, molten aluminum is first atomized by nitrogen gas to form small droplets, and then the small droplets form metal powder during flight.

[0003] For example, CN 215468100 U discloses a nitrogen atomization device for aluminum powder production, which includes a base, a column fixedly installed on the top left of the base, an atomization chamber fixedly installed on the top of the column, a molten pool fixedly installed on the top right of the base, a pressure reducing valve installed on the top left of the atomization chamber, an outlet pipe screwed to the top of the pressure reducing valve, a discharge port opened on the bottom right of the inner cavity of the atomization chamber, an aluminum powder collection box fixedly installed at the bottom of the atomization chamber corresponding to the discharge port, an oscillation mechanism installed on the inner left of the atomization chamber, and an aluminum powder atomizing component installed on the right of the atomization chamber, the aluminum powder atomizing component including a cylindrical tube, a siphon tube, a nozzle, and an inlet pipe. This device allows nitrogen to fully contact the molten aluminum, aiming to improve the atomization rate of the molten aluminum and facilitate the collection of aluminum powder. However, the following problems still exist: the oscillation mechanism drives the rectangular plate to oscillate, so that the aluminum powder in contact with the rectangular plate falls under the action of oscillation. However, some material may stick to the rectangular plate under the impact of nitrogen. After a long time, the adhesive layer becomes thick, which is not conducive to the splashing of powder and the collection of powder. Utility Model Content

[0004] The purpose of this invention is to provide a nitrogen atomization device for aluminum powder production that has a reasonable structure and reliable operation, which solves the above-mentioned problems, cleans up adhering powder in a timely manner, avoids waste, and facilitates powder collection.

[0005] The technical solution of this utility model is:

[0006] A nitrogen atomization device for aluminum powder production includes an atomization chamber, a nitrogen atomizing nozzle located on the upper side wall of the atomization chamber, and a receiving hopper located at the bottom of the atomization chamber. The key technical features are: a motor is fixed to the top of the atomization chamber; a conical wheel (wider at the top and narrower at the bottom) connected to the output end of the motor is located inside the atomization chamber; the centerline of the nitrogen atomizing nozzle is parallel to the horizontal plane and the nozzle points towards the center of the conical wheel; the vertical plane containing the centerline of the conical wheel coincides with the vertical plane containing the centerline of the nitrogen atomizing nozzle; a support is provided on the side wall of the atomization chamber opposite to the side wall containing the nitrogen atomizing nozzle; a brush in contact with the conical wheel is provided on the support; a dust overflow port is fixed to the top of the atomization chamber; a downwardly inclined return pipe is provided on the lower part of the side wall of the atomization chamber; the outer end of the return pipe is connected to the outer end of the dust overflow port via an external pipeline; a pressure reducing valve is provided on the external pipeline; and a horizontal screw conveyor connected to the lower end of the receiving hopper is fixed to the bottom of the atomization chamber.

[0007] In the aforementioned nitrogen atomization equipment for aluminum powder production, the return pipe is located below the brush, and guide plates are fixed on the side walls on both sides. The guide plates are located above and in contact with the return pipe, and the lower end of the guide plates extends towards the upper part of the middle of the receiving hopper.

[0008] The aforementioned nitrogen atomization equipment for aluminum powder production comprises an external pipe consisting of an inverted U-shaped pipe connected to the dust overflow port and a flexible pipe connected to the other end of the inverted U-shaped pipe. The other end of the flexible pipe is fixedly connected to the outer end of the return pipe. A vibration motor is fixed on the pipe section of the return pipe located outside the atomization chamber. The side wall of the atomization chamber is provided with a through hole and a sealing ring corresponding to the return pipe.

[0009] In the aforementioned nitrogen atomization equipment for aluminum powder production, the conical wheel is a hollow wheel, and a connecting rib group is provided between the inner side wall of the hollow wheel and the output shaft of the motor.

[0010] The beneficial effects of this utility model are:

[0011] 1. During operation, the cone wheel catches the atomized material sprayed from the nitrogen atomizing nozzle. The atomized material dries in the atomization chamber to form aluminum powder that falls down. The aluminum powder adhering to the cone wheel will also be scraped off by the brush when it rotates to the brush position, thus achieving the purpose of timely cleaning of the cone wheel and avoiding waste of aluminum powder. The aluminum powder falls into the receiving hopper under the combined action of the cone wheel and the brush for collection.

[0012] 2. The powder overflowing from the dust outlet falls into the receiving hopper through the external pipeline and return pipe, realizing the collection of overflow dust. The setting of the vibration motor is conducive to the downward movement of the powder.

[0013] 3. The aluminum powder received in the receiving hopper is transported to the outside of the atomization chamber by a horizontal screw conveyor, realizing the external delivery of aluminum powder. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 yes Figure 1 The right view.

[0016] In the diagram: 1. Nitrogen atomizing nozzle, 2. Atomizing chamber, 3. Conical wheel, 4. Connecting rib assembly, 5. Motor, 6. Dust overflow port, 7. Inverted U-shaped pipe, 8. Pressure reducing valve, 9. Flexible pipe, 10. Support, 11. Vibrating motor, 12. Brush, 13. Sealing ring, 14. Return pipe, 15. Guide plate, 16. Receiving hopper, 17. Horizontal screw conveyor. Detailed Implementation

[0017] The present invention will be described in detail with reference to the accompanying drawings.

[0018] like Figure 1 , Figure 2 As shown, the nitrogen atomization equipment for aluminum powder production includes an atomization chamber 2, a nitrogen atomization nozzle 1 located on the upper side wall of the atomization chamber 2, and a receiving hopper 16 located at the bottom of the atomization chamber 2.

[0019] In this embodiment, a motor 5 is fixed to the top of the atomizing chamber 2. Inside the atomizing chamber 2, a conical wheel 3, wider at the top and narrower at the bottom, is connected to the output end of the motor 5. The centerline of the nitrogen atomizing nozzle 1 is parallel to the horizontal plane, and the nozzle points towards the middle of the conical wheel 3. The vertical plane containing the centerline of the conical wheel 3 coincides with the vertical plane containing the centerline of the nitrogen atomizing nozzle 1. In this embodiment, the conical wheel 3 is a hollow wheel, and a connecting rib group 4 is provided between the inner wall of the hollow wheel and the output shaft of the motor 5.

[0020] A support 10 is provided on the side wall of the atomizing chamber 2 opposite to the side wall where the nitrogen atomizing nozzle 1 is located. A brush 12 that contacts the conical wheel 3 is provided on the support 10. A dust overflow port 6 is fixed at the top of the atomizing chamber 2. A downwardly inclined return pipe 14 is provided on the lower part of the side wall of the atomizing chamber 2. The outer end of the return pipe 14 is connected to the outer end of the dust overflow port 6 by an external pipeline. A pressure reducing valve 8 is provided on the external pipeline. In this embodiment, the return pipe 14 is located below the brush 12, and guide plates 15 are fixed on the side walls on both sides. The guide plates 15 are located above and in contact with the return pipe 14. The guide plates 15 are located below the brush 12, and the lower end of the guide plates 15 extends towards the upper part of the middle of the receiving hopper 16. The external pipe is composed of an inverted U-shaped pipe 7 connected to the dust overflow port 6 and a flexible pipe 9 connected to the other end of the inverted U-shaped pipe 7. The other end of the flexible pipe 9 is fixedly connected to the outer end of the return pipe 14. A vibration motor 11 is fixed on the pipe section of the return pipe 14 located outside the atomization chamber 2. The side wall of the atomization chamber 2 is provided with a through hole and a sealing ring 13 corresponding to the return pipe 14.

[0021] The bottom of the atomizing chamber 2 is fixed with a horizontal screw conveyor 17 that communicates with the lower end of the receiving hopper 16.

[0022] Working principle:

[0023] The nitrogen atomizing nozzle 1 operates on the same principle as the "aluminum powder atomizing component" in the background art. The nitrogen atomizing nozzle 1 continuously sprays atomized material into the atomizing chamber 2. The conical wheel 3 inside the atomizing chamber 2 intercepts the atomized material, which dries to form aluminum powder that falls down. The aluminum powder adhering to the conical wheel 3 is also scraped off by the brush 12 when the wheel rotates to the brush position. Under the combined action of the conical wheel 3 and the brush 12, the aluminum powder falls into the receiving hopper 16. The horizontal screw conveyor 17 promptly discharges the powder from the receiving hopper 16 outside the atomizing chamber 2.

[0024] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this patent.

Claims

1. A nitrogen gas atomization equipment for producing aluminum powder, comprising an atomization chamber, a nitrogen gas atomization nozzle arranged on the upper portion of the sidewall of the atomization chamber, and a receiving hopper arranged at the bottom of the atomization chamber, characterized in that: The motor is fixed on the top of the atomization chamber, a taper wheel with wide top and narrow bottom is arranged inside the atomization chamber and connected with the output end of the motor, the center line of the nitrogen atomization nozzle is parallel to the horizontal plane and the nozzle points to the middle part of the taper wheel, the vertical plane where the center line of the taper wheel is located coincides with the vertical plane where the center line of the nitrogen atomization nozzle is located, a support is arranged on the side wall of the atomization chamber opposite to the side wall where the nitrogen atomization nozzle is arranged, a brush is arranged on the support and in contact with the taper wheel, an overflow port is fixed on the top of the atomization chamber, a backflow pipe is arranged on the lower part of the side wall of the atomization chamber and inclined downward, the outer end of the backflow pipe is communicated with the outer end of the overflow port by an external connecting pipe, a pressure reducing valve is arranged on the external connecting pipe, a horizontal screw conveyor is fixed on the bottom of the atomization chamber and communicated with the lower end of the receiving hopper.

2. The nitrogen gas atomizing apparatus for aluminum powder production according to claim 1, characterized by: The backflow pipe is located below the brush and fixed with a flow guide inclined plate on the side walls on both sides, the flow guide inclined plate is located above the backflow pipe and in contact with the backflow pipe, the flow guide inclined plate is located below the brush, and the lower end of the flow guide inclined plate extends above the middle part of the receiving hopper.

3. The nitrogen gas atomizing apparatus for aluminum powder production according to claim 1, characterized by: The external connecting pipe is composed of an inverted U-shaped pipe connected with the overflow port and a flexible pipe connected with the other end of the inverted U-shaped pipe, the other end of the flexible pipe is connected with and fixed on the outer end of the backflow pipe, a vibration motor is fixed on the pipe segment outside the atomization chamber, and the side wall of the atomization chamber is provided with a through hole and a sealing ring corresponding to the backflow pipe.

4. The nitrogen gas atomizing apparatus for aluminum powder production according to claim 1, characterized by: The taper wheel is a hollow wheel, and a connecting rib group is arranged between the inner side wall of the hollow wheel and the output shaft of the motor.

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