A nitrogen purification device for atomized aluminum powder production

Abstract

This utility model relates to the field of nitrogen purification technology, specifically to a nitrogen purification device for the production of atomized aluminum powder. It includes a purification chamber with an inlet pipe connected to one end and an outlet pipe connected to the other end. A vertically arranged filter screen is installed inside the purification chamber. An air jet branch pipe is located on the side of the filter screen near the outlet pipe, rotatably connected to the purification chamber. One end of the air jet branch pipe extends outside the purification chamber and connects to a main air jet pipe. Several nozzles facing the filter screen are installed on the air jet branch pipe. A lead screw is rotatably connected inside the purification chamber, with a slider threaded onto the lead screw. A telescopic rod is provided between the slider and the corresponding air jet branch pipe. A dust discharge pipe is connected to the bottom surface of the purification chamber. This utility model, by setting the lead screw, slider, and telescopic rod to drive the air jet branch pipe to reciprocate, allows the nozzles to spray high-pressure nitrogen in an oscillating manner, thereby expanding the coverage area of ​​the nozzles and reducing dead zones in the filter screen cleaning process.

Description

Technical Field

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

[0002] In the production of atomized aluminum powder, high-purity nitrogen is the key protective gas to prevent the oxidation of aluminum powder. In existing technologies, nitrogen purification devices mostly use fixed filter screens to intercept aluminum powder particles. However, aluminum powder easily accumulates on the surface of the filter screen, forming clumps, which leads to increased airflow resistance and decreased filtration efficiency. A backflushing system is usually used to clean the filter screen. However, the nozzle position of the backflushing system is not adjustable, resulting in cleaning dead zones. In particular, the cleaning effect is poor for highly adhesive fine aluminum powder. Therefore, there are still shortcomings and deficiencies in the existing technology. Utility Model Content

[0003] This invention provides a nitrogen purification device for the production of atomized aluminum powder to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a nitrogen purification device for the production of atomized aluminum powder, including a purification box, one end of which is connected to an air inlet pipe and a first air valve is installed on the air inlet pipe, the other end of which is connected to an air outlet pipe and a second air valve is installed on the air outlet pipe, a vertically arranged filter screen is provided inside the purification box, and a number of spaced-apart jet branch pipes parallel to the filter screen are provided on the side of the filter screen near the air outlet pipe, the jet branch pipes are rotatably connected to the purification box, one end of the jet branch pipe extends to the outside of the purification box and is connected to a jet main pipe, the jet branch pipes and the jet main pipe are connected by a rotary joint, and a number of nozzles facing the filter screen are installed on the jet branch pipes.

[0005] Inside the purification chamber, a lead screw perpendicular to the jet branch pipe is rotatably connected. One end of the lead screw extends outside the purification chamber and is connected to a stepper motor. A slider corresponding to the jet branch pipe is threaded onto the lead screw. A telescopic rod is provided between the slider and the corresponding jet branch pipe. One end of the telescopic rod is hinged to the slider, and the other end of the telescopic rod is fixedly connected to the corresponding jet branch pipe. A dust exhaust pipe is connected to the bottom surface of the purification chamber. The dust exhaust pipe is located on the side of the filter screen near the air inlet pipe, and a third air valve is installed on the dust exhaust pipe.

[0006] Preferably, mounting plates are provided at the four corners of one side of the filter screen. The mounting plates are fixedly connected to the purification box. Springs are fixedly connected to the side of the mounting plates near the filter screen. A mounting frame is fixedly connected between the four springs. The filter screen is fixedly connected inside the mounting frame. A dustproof strip brush is fixedly connected to the outer ring of the mounting frame. A knocking component is provided on one side of the mounting frame.

[0007] Preferably, the striking assembly includes cams fixedly connected to both ends of the jet manifold.

[0008] Preferably, a guide rod parallel to the lead screw is fixedly connected inside the purification box, and a slider is sleeved on the guide rod and slidably connected to the guide rod.

[0009] Preferably, an inspection door is provided on the side wall of the purification box, and a handle is fixedly connected to the inspection door.

[0010] The beneficial effects of this utility model are as follows: (1) This utility model drives the jet branch pipe to reciprocate by setting a lead screw, slider and telescopic rod, so that the nozzle can spray high-pressure nitrogen in an oscillating manner, thereby expanding the coverage of the nozzle and reducing the dead angle of the filter screen; (2) When the jet branch pipe rotates, it can drive the cams at both ends to periodically strike the mounting frame, causing the filter screen to vibrate. Combined with nitrogen spray, it can remove the highly adhesive aluminum powder and improve the dust removal effect of the device. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the internal structure of the present invention in frontal view;

[0013] Figure 3 This is a top view of the internal structure of this utility model.

[0014] Reference numerals: 1. Purification box, 2. Inlet pipe, 3. First air valve, 4. Outlet pipe, 5. Second air valve, 6. Filter screen, 7. Jet branch pipe, 8. Jet main pipe, 9. Rotary joint, 10. Nozzle, 11. Lead screw, 12. Stepper motor, 13. Slider, 14. Telescopic rod, 15. Dust exhaust pipe, 16. Third air valve, 17. Mounting plate, 18. Spring, 19. Mounting frame, 20. Dustproof strip brush, 21. Knocking assembly, 22. Guide rod, 23. Inspection door, 24. Handle. Detailed Implementation

[0015] The present invention will now be further described with reference to the accompanying drawings.

[0016] like Figure 1-3As shown, this utility model provides a nitrogen purification device for the production of atomized aluminum powder, including a purification box 1. One end of the purification box 1 is connected to an air inlet pipe 2, and a first air valve 3 is installed on the air inlet pipe 2. The other end of the purification box 1 is connected to an air outlet pipe 4, and a second air valve 5 is installed on the air outlet pipe 4. A vertically arranged filter screen 6 is provided inside the purification box 1. Several spaced-apart jet branch pipes 7 parallel to the filter screen 6 are provided on the side of the filter screen 6 near the air outlet pipe 4. The jet branch pipes 7 are rotatably connected to the purification box 1. One end of the jet branch pipe 7 extends outside the purification box 1 and is connected to a jet main pipe 8. The jet branch pipes 7 and the jet main pipe 8 are connected by a rotary joint 9. Several nozzles 10 facing the filter screen 6 are installed on the branch pipe 7; a lead screw 11 perpendicular to the jet branch pipe 7 is rotatably connected inside the purification box 1. One end of the lead screw 11 extends to the outside of the purification box 1 and is connected to a stepper motor 12. A slider 13 corresponding to the jet branch pipe 7 is threaded on the lead screw 11. A telescopic rod 14 is provided between the slider 13 and the corresponding jet branch pipe 7. One end of the telescopic rod 14 is hinged to the slider 13, and the other end of the telescopic rod 14 is fixedly connected to the corresponding jet branch pipe 7. A dust discharge pipe 15 is connected to the bottom surface of the purification box 1. The dust discharge pipe 15 is located on the side of the filter screen 6 near the air inlet pipe 2. A third air valve 16 is installed on the dust discharge pipe 15.

[0017] Specifically, when the filter screen 6 is clogged, the first air valve 3 and the second air valve 5 are closed, and the third air valve 16 is opened to introduce pressurized nitrogen into the jet main pipe 8. The pressurized nitrogen passes through the jet main pipe 8, the rotary joint 9, the jet branch pipe 7, and the nozzle 10 in sequence before being shot towards the back of the filter screen 6. At the same time, the stepper motor 12 is started, and the stepper motor 12 drives the lead screw 11 to rotate in both directions. The lead screw 11 drives the slider 13 to reciprocate, causing the telescopic rod 14 to rotate back and forth around the jet branch pipe 7. Since the telescopic rod 14 is fixedly connected to the jet branch pipe 7, while the jet branch pipe 7 is rotatably connected to the jet main pipe 8, the telescopic rod 14 can drive the jet branch pipe 7 to rotate back and forth, causing the jet branch pipe 7 to drive the nozzle 10 to swing back and forth. This expands the coverage area of ​​the nozzle 10 and reduces the dead corners for cleaning the filter screen 6. Finally, the detached aluminum powder enters the separation device with the nitrogen through the dust discharge pipe 15 for recycling.

[0018] In some embodiments, mounting plates 17 are provided at the four corners of one side of the filter screen 6. The mounting plates 17 are fixedly connected to the purification box 1. Springs 18 are fixedly connected to the side of the mounting plates 17 near the filter screen 6. A mounting frame 19 is fixedly connected between the four springs 18. The filter screen 6 is fixedly connected inside the mounting frame 19. A dustproof brush 20 is fixedly connected to the outer ring of the mounting frame 19. The dustproof brush 20 fits against the inner wall of the purification box 1 to prevent aluminum powder from passing through the gap between the mounting frame 19 and the inner wall of the purification box 1. A striking component 21 is provided on one side of the mounting frame 19. The striking component 21 includes cams fixedly connected to both ends of the jet pipe 7. Specifically, in use, when the jet pipe 7 reciprocates, the jet pipe 7 can drive the cams to reciprocate, causing the cams to periodically strike the mounting frame 19, causing the filter screen 6 to vibrate. Combined with nitrogen injection, this can remove highly adhesive aluminum powder and improve the dust removal effect of the device.

[0019] In some embodiments, a guide rod 22 parallel to the lead screw 11 is fixedly connected inside the purification box 1. The slider 13 is sleeved on the guide rod 22 and slidably connected to the guide rod 22. The guide rod 22 plays a guiding role, which can ensure that the slider 13 can reciprocate stably along the lead screw 11 and improve the stability of the device.

[0020] In some embodiments, an inspection door 23 is provided on the side wall of the purification box 1, and a handle 24 is fixedly connected to the inspection door 23, so that the inside of the purification box 1 can be easily inspected through the inspection door 23.

[0021] The above embodiments can be combined with each other.

[0022] The above embodiments are not intended to limit the shape, material, structure, etc. of this utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A nitrogen purification device for the production of atomized aluminum powder, comprising a purification chamber, one end of which is connected to an inlet pipe and a first air valve is installed on the inlet pipe; the other end of which is connected to an outlet pipe and a second air valve is installed on the outlet pipe; and a vertically arranged filter screen is provided inside the purification chamber, characterized in that: The filter screen is provided with several spaced-apart jet branch pipes that are parallel to the filter screen on the side near the air outlet pipe. The jet branch pipes are rotatably connected to the purification box. One end of the jet branch pipe extends to the outside of the purification box and is connected to the jet main pipe. The jet branch pipes and the jet main pipe are connected by a rotary joint. Several nozzles facing the filter screen are installed on the jet branch pipes. Inside the purification chamber, there is a lead screw that is rotatably connected to the jet branch pipe. One end of the lead screw extends to the outside of the purification chamber and is connected to a stepper motor. A slider corresponding to the jet branch pipe is threaded onto the lead screw. A telescopic rod is provided between the slider and the corresponding jet branch pipe. One end of the telescopic rod is hinged to the slider, and the other end of the telescopic rod is fixedly connected to the corresponding jet branch pipe. A dust exhaust pipe is connected to the bottom of the purification chamber. The dust exhaust pipe is located on the side of the filter screen near the air inlet pipe, and a third air valve is installed on the dust exhaust pipe.

2. The nitrogen purification device for atomized aluminum powder production according to claim 1, characterized in that: Mounting plates are provided at the four corners of one side of the filter screen. The mounting plates are fixedly connected to the purification box. Springs are fixedly connected to the side of the mounting plate near the filter screen. A mounting frame is fixedly connected between the four springs. The filter screen is fixedly connected inside the mounting frame. A dustproof strip brush is fixedly connected to the outer ring of the mounting frame. A knocking component is provided on one side of the mounting frame.

3. The nitrogen purification device for atomized aluminum powder production according to claim 2, characterized in that: The striking assembly includes cams fixedly connected to both ends of the jet manifold.

4. The nitrogen purification device for atomized aluminum powder production according to claim 1, characterized in that: The purification chamber is fixedly connected to a guide rod parallel to the lead screw, and the slider is sleeved on the guide rod and slidably connected to the guide rod.

5. A nitrogen purification device for the production of atomized aluminum powder according to claim 1, characterized in that: The purification chamber has an inspection door on its side wall, and a handle is fixedly connected to the inspection door.

Images