Micro aluminum powder screening device with air blowing mechanism

Abstract

The utility model discloses a fine aluminum powder screening device with a blowing mechanism, which comprises a screening box, the top of the screening box is provided with a feed inlet, three screens with the same structure are arranged in the screening box, and the three screens are sequentially called a first screen, a second screen and a third screen from top to bottom; a first discharging plate is obliquely arranged below the first screen, a first discharging port is formed in the bottom of the first discharging plate, a second discharging plate is obliquely arranged below the second screen, a second discharging port is formed in the bottom of the second discharging plate, a third discharging plate is obliquely arranged below the third screen, and a third discharging port is formed in the bottom of the third discharging plate. The first discharging port and the second discharging port are formed in the side wall of the screening box, and the third discharging port and the fourth discharging port are formed in the bottom of the screening box. Air blowing mechanisms are arranged above the three screens; the device can perform multi-stage screening on the granularity of the aluminum powder by controlling the wind power of the air blowing mechanism, so that the aluminum powder with various granularity sizes is obtained.

Description

TECHNICAL FIELD

[0001] The utility model relates to aluminum powder screening equipment technical field, especially a kind of micro-fine aluminum powder screening device with blowing mechanism. BACKGROUND

[0002] Aluminum powder is an important metal powder material, and is widely used in the fields of aviation, automobile, wire and cable, metallurgy, paint, fireproof material and chemical industry. At present, the preparation process of aluminum powder mostly adopts atomization method, that is, first melt aluminum ingot and keep warm, then deliver to atomization chamber, and atomize and granulate by inert mixed gas sprayed by gas atomization nozzle. However, it is difficult to accurately control the particle size of aluminum powder by atomization method, so there will be a large particle size span, which cannot be directly used as raw material and needs to be screened. The conventional vibrating screening device has large strength and is easy to damage aluminum powder, causing oxidation reaction of aluminum powder and affecting the production quality of aluminum powder. SUMMARY

[0003] The utility model aims at providing a kind of micro-fine aluminum powder screening device with blowing mechanism, which can screen the particle size of aluminum powder by controlling the wind power of blowing mechanism, and obtain aluminum powder with multiple particle sizes through multi-stage sorting.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a kind of micro-fine aluminum powder screening device with blowing mechanism, comprising a screening box, a feed inlet is arranged on the top of the screening box, three structurally identical screens are arranged in the screening box, the three screens are sequentially called first screen, second screen and third screen from top to bottom, the top of the first screen is below the feed inlet, the bottom of the first screen is provided with a first discharge port, the top of the second screen is below the first discharge port, the bottom of the second screen is provided with a second discharge port, the top of the third screen is below the second discharge port, the bottom of the third screen is provided with a fourth discharge port; a first discharge plate is arranged obliquely below the first screen, the bottom of the first discharge plate is provided with a first discharge port, a second discharge plate is arranged obliquely below the second screen, the bottom of the second discharge plate is provided with a second discharge port, a third discharge plate is arranged obliquely below the third screen, the bottom of the third discharge plate is provided with a third discharge port, the first discharge port and the second discharge port are arranged on the side wall of the screening box, and the third discharge port and the fourth discharge port are arranged on the bottom of the screening box; blowing mechanism is arranged above the three screens.

[0005] Optionally, the blowing mechanism comprises a blowing pipeline, two ends of the blowing pipeline are provided with fixing plates, the fixing plates are fixedly connected to the two sides of the screen, an air outlet is arranged on the side of the blowing pipeline close to the screen, an air inlet branch pipe is communicated with the side of the blowing pipeline away from the screen, an air inlet main pipe is arranged on the outside of the screening box, and the air inlet branch pipe is communicated with the air inlet main pipe.

[0006] Optionally, the inclination degrees of the first screen, the second screen and the third screen gradually increase.

[0007] Optionally, a vibration mechanism is arranged between the screen corresponding to each other and the discharge plate.

[0008] Optionally, the vibration mechanism comprises a mounting frame, a driving motor is fixedly connected to the mounting frame, an eccentric wheel is arranged at an output end of the driving motor, a vibration plate is vertically and slidably connected to the mounting frame, a driving plate is arranged on a side of the vibration plate close to the driving motor, and a bottom of the driving plate is attached to a top of the eccentric wheel.

[0009] Optionally, a buffer pad is arranged on the top and the bottom of the vibration plate.

[0010] Optionally, a plurality of material blocking plates are arranged in the feeding port in a staggered manner.

[0011] The fine aluminum powder screening device with the blowing mechanism has the following advantages:

[0012] (1) The meshes of the three screens are sequentially increased, the blowing structure is used to control the wind power, the aluminum powder with small particle size falls on the discharge plate below after passing through the screen, and the aluminum powder with large particle size continues to roll down and is screened again through the subsequent screen, the screening method is soft and will not damage the aluminum powder, the production quality of the aluminum powder is ensured, and the multi-stage screening can accurately separate the aluminum powder with different particle sizes.

[0013] (2) As the screening is gradually performed, the aluminum powder becomes less and less, the inclination degree of the screen is increased, the rolling speed of the aluminum powder is accelerated, and the screening efficiency is improved.

[0014] (3) The vibration mechanism can provide slight vibration to the screen and the discharge plate, the speed of the aluminum powder discharging and discharging is accelerated, and the production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the utility model.

[0016] Figure 2 is a schematic view of the blowing mechanism.

[0017] Figure 3 is Figure 1 an enlarged schematic view of part A in figure 1.

[0018] Figure 4 is a schematic view of the vibration mechanism. DETAILED DESCRIPTION

[0019] The utility model will be further described below in combination with the drawings.

[0020] For example, Figures 1-4As shown, a fine aluminum powder screening device with blowing mechanism 16, including screening box 1, the top of screening box 1 is provided with feed inlet 2, a plurality of baffles 3 are arranged in feed inlet 2, baffles 3 can slow down the falling of aluminum powder, avoid a large amount of aluminum powder accumulated at feed inlet 2, affect the normal operation of the screening device. Three screening meshes with the same structure are arranged in screening box 1, the three screening meshes are called first screening mesh 4, second screening mesh 5 and third screening mesh 6 from top to bottom, the top of first screening mesh 4 is below feed inlet 2, the bottom of first screening mesh 4 is provided with first discharge port 7, the top of second screening mesh 5 is below first discharge port 7, the bottom of second screening mesh 5 is provided with second discharge port 8, the top of third screening mesh 6 is below second discharge port 8, the bottom of third screening mesh 6 is provided with fourth discharge port 15. The mesh size of first screening mesh 4, second screening mesh 5 and third screening mesh 6 increases in turn, the particle size of aluminum powder is screened in multiple stages from small to large, the inclination of first screening mesh 4, second screening mesh 5 and third screening mesh 6 gradually increases, as the screening gradually proceeds, the aluminum powder on the lower screening mesh will gradually decrease, by increasing the inclination of the screening mesh, the rolling speed of the aluminum powder can be accelerated, the screening efficiency is improved.

[0021] The first discharge plate 9 is arranged below the first screening mesh 4, the bottom of the first discharge plate 9 is provided with the first discharge port 10, the second discharge plate 11 is arranged below the second screening mesh 5, the bottom of the second discharge plate 11 is provided with the second discharge port 12, the third discharge plate 13 is arranged below the third screening mesh 6, the bottom of the third discharge plate 13 is provided with the third discharge port 14, the first discharge port 10 and the second discharge port 12 are arranged on the side wall of the screening box 1, the third discharge port 14 and the fourth discharge port 15 are arranged on the bottom of the screening box 1, the particle size of the aluminum powder of the first discharge port 10, the second discharge port 12, the third discharge port 14 and the fourth discharge port 15 gradually increases.

[0022] The blowing mechanism 16 is arranged above the three screening meshes, the blowing mechanism 16 includes blowing pipe 17, the two ends of the blowing pipe 17 are provided with fixed plates 18, the fixed plates 18 are fixedly connected on the two sides of the screening mesh, the side of the blowing pipe 17 close to the screening mesh is provided with air outlet 19, the side of the blowing pipe 17 away from the screening mesh is communicated with air inlet branch pipe 20, the outside of the screening box 1 is provided with air inlet main pipe 21, the air inlet branch pipe 20 is communicated with the air inlet main pipe 21, the electromagnetic valve is installed in the air inlet branch pipe 20, the size of the wind power can be controlled. The wind power of the blowing mechanism 16 on the first screening mesh 4, the second screening mesh 5 and the third screening mesh 6 increases in turn, the air outlet 19 blows the falling aluminum powder, the aluminum powder with small particle size is blown to the screening mesh, the aluminum powder with small particle size passes through the screening mesh and falls on the discharge plate and is discharged from the screening box 1, the aluminum powder with large particle size which is not blown by the wind will continue to roll down along the screening mesh and be screened subsequently.

[0023] Corresponding screen and discharge plate between the setting has a vibrating mechanism, the vibrating mechanism includes mounting frame 22, mounting frame 22 is fixedly connected with drive motor 23, the output end of drive motor 23 is provided with eccentric wheel 24, mounting frame 22 is also vertically slidingly connected with vibration plate 25, the top and bottom of vibration plate 25 are provided with buffer pad 26, vibration plate 25 is close to the side of drive motor 23 and is provided with drive plate 27, the bottom of drive plate 27 and the top of eccentric wheel 24 are pasted.Drive motor 23 drives eccentric wheel 24 to rotate, when the nearest end of eccentric wheel 24 contacts drive plate 27, the bottom end of vibration plate 25 contacts discharge plate, when the farthest end of eccentric wheel 24 contacts drive plate 27, the top end of vibration plate 25 contacts screen, in this way, vibration plate 25 can impact up and down between screen and discharge plate, to cause slight vibration, can accelerate the speed of aluminum powder discharging and discharging, improve the efficiency of screening.

[0024] The above-described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.

Claims

1. A microfine aluminum powder screening device having a blowing mechanism, characterized by: The screening box is provided with a feeding port at the top, three structurally identical screens are obliquely arranged in the screening box, the three screens are sequentially called a first screen, a second screen and a third screen from top to bottom, the top of the first screen is below the feeding port, the bottom of the first screen is provided with a first discharge port, the top of the second screen is below the first discharge port, the bottom of the second screen is provided with a second discharge port, the top of the third screen is below the second discharge port, and the bottom of the third screen is provided with a fourth discharge port; a first discharge plate is obliquely arranged below the first screen, the bottom of the first discharge plate is provided with a first discharge port, a second discharge plate is obliquely arranged below the second screen, the bottom of the second discharge plate is provided with a second discharge port, a third discharge plate is obliquely arranged below the third screen, the bottom of the third discharge plate is provided with a third discharge port, the first discharge port and the second discharge port are arranged on the side wall of the screening box, and the third discharge port and the fourth discharge port are arranged on the bottom of the screening box; the upper portions of the three screens are provided with air blowing mechanisms.

2. The fine aluminum powder screening apparatus having a blowing mechanism according to claim 1, characterized by: The air blowing mechanism comprises an air blowing pipeline, two ends of the air blowing pipeline are provided with fixing plates, the fixing plates are fixedly connected to the two sides of the screen, one side of the air blowing pipeline close to the screen is provided with an air outlet, the side of the air blowing pipeline away from the screen is communicated with an air inlet branch pipe, the outside of the screening box is provided with an air inlet main pipe, and the air inlet branch pipe is communicated with the air inlet main pipe.

3. The fine aluminum powder screening apparatus having a blowing mechanism according to claim 1, wherein: The inclination degrees of the first screen, the second screen and the third screen gradually increase.

4. The fine aluminum powder screening apparatus having a blowing mechanism according to claim 1, wherein: Vibration mechanisms are arranged between the corresponding screens and the discharge plates.

5. The fine aluminum powder screening apparatus having a blowing mechanism according to claim 4, wherein: The vibration mechanism comprises a mounting frame, a driving motor is fixedly connected to the mounting frame, an eccentric wheel is arranged at the output end of the driving motor, a vibration plate is vertically and slidably connected to the mounting frame, a driving plate is arranged on the side of the vibration plate close to the driving motor, and the bottom of the driving plate is attached to the top of the eccentric wheel.

6. The fine aluminum powder screening apparatus having a blowing mechanism according to claim 5, wherein: The top and the bottom of the vibration plate are provided with buffer pads.

7. The fine aluminum powder screening apparatus having a blowing mechanism according to claim 1, wherein: A plurality of material blocking plates are arranged in the feeding port in a staggered manner.

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