Screening device for purifying aluminum oxide granulation powder

Abstract

The utility model relates to the field of aluminum oxide ceramic production equipment, in particular to a screening device for purifying aluminum oxide granulation powder, which comprises a support, a screening box rotationally arranged at the upper end of the support and rotationally connected with the support, a rotating mechanism arranged on the support and connected with the screening box, and dust collection hoses arranged at the two ends and the lower end of the screening box. A negative pressure dust collector connected with the dust collection hoses is arranged on the support, an air inlet window is arranged at the upper end of the screening box and connected with an air filtering unit, a first driving mechanism is arranged in the screening box and connected with a screening net cylinder, the end of the screening net cylinder is rotationally and hermetically connected with a feeding pipe, and the feeding pipe extends out of the screening box. A spiral blade is rotationally arranged in the feeding pipe, a mounting base is arranged outside the screening box, and a positive and negative rotation motor connected with the spiral blade is arranged on the mounting base. The device has the advantages of automatically discharging particles with larger particle sizes and being not easy to block.

Description

Technical Field

[0001] This utility model relates to the field of alumina ceramic production equipment, and in particular to a sieving device for purifying alumina granulated powder. Background Technology

[0002] Alumina granulated powder is a raw material for the production of alumina ceramics. It is suitable for dry pressing or static pressing of alumina ceramic products. The preparation methods of alumina granulated powder include general granulation, pressure granulation, spray granulation, and freeze drying. Among the above production methods, spray granulation is suitable for large-scale industrial production. After the alumina granulated powder is produced, it needs to be screened for purification to ensure uniform particle size. The common screening method is to use a vibrating screen, but vibrating screens are prone to clogging after a period of use and need to be disassembled and cleaned. Therefore, it is particularly necessary to develop a screening device for the purification of alumina granulated powder that is not prone to clogging. Summary of the Invention

[0003] The purpose of this invention is to provide a sieving device for purifying alumina granulated powder, which has the advantage of not being easily blocked during the sieving process.

[0004] The technical solution adopted is as follows:

[0005] A sieving device for purifying alumina granulated powder includes a support frame, a sieving box rotatably mounted on the upper end of the support frame, the sieving box being rotatably connected to the support frame, a rotating mechanism connected to the sieving box on the support frame, suction hoses at both ends and the lower end of the sieving box, a negative pressure vacuum cleaner connected to each suction hose on the support frame, an air inlet window at the upper end of the sieving box, an air filter unit connected to the air inlet window, a first drive mechanism inside the sieving box, a sieving screen cylinder connected to the first drive mechanism, a brush corresponding to the side of the sieving screen cylinder inside the sieving box, a feed pipe rotatably and sealed to the end of the sieving screen cylinder, the feed pipe extending to the outside of the sieving box, a spiral blade rotatably mounted inside the feed pipe, a mounting base outside the sieving box, and a forward and reverse rotating motor connected to the spiral blade on the mounting base.

[0006] Preferably, the outer end of the feed pipe is connected to a T-shaped pipe, and both the upper and lower ends of the T-shaped pipe are connected to valves. The upper valve is connected to a hopper, and the lower valve is connected to a waste bin.

[0007] Preferably, the valve is an electric ball valve.

[0008] Preferably, the rotating mechanism includes a steering motor and a driven gear, the driven gear being fixedly mounted on the screening box, and the steering motor being connected to a drive gear meshing with the driven gear.

[0009] Preferably, the lower end of the screening box is arc-shaped.

[0010] Preferably, the support is provided with a positioning mechanism, which includes a limiting tube. The limiting tube is fixedly installed at the lower end of the screening box. A telescopic mechanism extends vertically from the lower end of the support. When the feed pipe is in a horizontal state, the limiting tube and the telescopic mechanism extend coaxially.

[0011] Compared to existing technologies, the advantages are:

[0012] This invention conveys alumina granulated powder from the feed pipe into a screening cylinder. The rotating screening cylinder throws out the alumina granulated powder with the correct particle size into the screening box. During the rotation of the screening cylinder, a brush removes the alumina granulated powder stuck in the cylinder to prevent clogging. Subsequently, a negative pressure vacuum cleaner sucks the alumina granulated powder with the correct particle size into the vacuum cleaner. When a certain amount of alumina granulated powder with a larger particle size accumulates in the screening cylinder, the screening box is rotated 90 degrees until the feed pipe is vertical. This discharges the unqualified alumina granulated powder from the feed pipe and opens the corresponding valve to transport it to the waste bin. Compared with traditional screening and purification methods, this invention has the advantages of automatically discharging larger particles and being less prone to clogging. Attached Figure Description

[0013] Figure 1 This is a front three-dimensional structural diagram of a sieving device for purifying alumina granulated powder according to this utility model.

[0014] Figure 2 yes Figure 1 A schematic diagram of the structure at point A in the middle.

[0015] Figure 3 yes Figure 1 A schematic diagram of the structure at point B.

[0016] Figure 4 This is a three-dimensional structural diagram of the rear side of a sieving device for purifying alumina granulated powder according to this utility model.

[0017] Figure 5 This is a side view schematic diagram of a sieving device for purifying alumina granulated powder according to this utility model.

[0018] In the diagram: 1. Support frame; 2. Screening box; 3. Support tube; 4. Steering motor; 5. Driven gear; 6. Drive gear; 7. Vacuum hose; 8. Negative pressure vacuum cleaner; 9. Air filter unit; 10. First drive mechanism; 11. Screening cylinder; 12. Brush; 13. Feed pipe; 14. T-pipe; 15. Valve; 16. Waste bin; 17. Hopper; 18. Spiral blade; 20. Forward and reverse motor; 21. Limiting tube; 22. Telescopic mechanism. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments, such as... Figures 1 to 5As shown:

[0020] Example 1: A sieving device for purifying alumina granulated powder includes a support 1, a sieving box 2 rotatably mounted on the upper end of the support 1, the sieving box 2 being rotatably connected to the support 1, support pipes 3 horizontally mounted at both ends of the sieving box 2, the support pipes 3 being rotatably connected to the support 1, a rotating mechanism connected to the sieving box 2 on the support 1, the rotating mechanism controlling the rotation of the sieving box 2 on the upper end of the support 1, suction hoses 7 mounted at both ends and the lower end of the sieving box 2, the suction hoses 7 at both ends of the sieving box 2 being connected to the support pipes 3 on the same side, and a negative pressure vacuum cleaner 8 mounted on the support 1 connected to each suction hose 7, the negative pressure vacuum cleaner 8 sucking the alumina granulated powder in the sieving box 2 into the negative pressure vacuum cleaner 8 for storage.

[0021] The screening box 2 is provided with an air inlet window at the top, and the air inlet window is connected to an air filter unit 9. The air filter unit 9 is existing technology and will not be described in detail here. The screening box 2 is provided with a first drive mechanism 10. The first drive mechanism 10 is provided with a drive shaft. The drive shaft extends into the screening box 2 and is connected to a screening screen cylinder 11. The screening box 2 is provided with a brush 12 corresponding to the side of the screening screen cylinder 11. During the rotation of the screening screen cylinder 11, the brush 12 cleans the side of the screening screen cylinder 11 to prevent the screening screen cylinder 11 from being blocked by alumina granulation powder.

[0022] The end of the screening cylinder 11 is rotatably sealed with a feed pipe 13, which extends to the outside of the screening box 2. A spiral blade 18 is rotatably installed inside the feed pipe 13. A mounting base is provided outside the screening box 2, and a forward and reverse motor 20 connected to the spiral blade 18 is provided on the mounting base. The forward and reverse motor 20 controls the forward and reverse rotation of the spiral blade 18, thereby controlling the feeding or discharging of material through the feed pipe 13.

[0023] When sieving and purifying alumina granulated powder, the alumina granulated powder is conveyed from the feed pipe 13 into the screening cylinder 11. The first drive mechanism 10 drives the screening cylinder 11 to rotate. The rotating screening cylinder 11 throws out the alumina granulated powder with qualified particle size into the screening box 2. During the rotation of the screening cylinder 11, the brush 12 brushes out the alumina granulated powder stuck in the cylinder to avoid blockage. Then, under the action of the negative pressure vacuum cleaner 8, the alumina granulated powder with suitable particle size is sucked into the negative pressure vacuum cleaner 8. When a certain amount of alumina granulated powder with larger particle size accumulates in the screening cylinder 11, the screening box 2 is controlled to rotate 90 degrees until the feed pipe 13 is in a vertical state, and the spiral blade 18 is reversed to discharge the unqualified alumina granulated powder in the screening cylinder 11 from the feed pipe 13.

[0024] Example 2: A sieving device for purifying alumina granulated powder includes a support 1, a sieving box 2 rotatably mounted on the upper end of the support 1, the sieving box 2 being rotatably connected to the support 1, support pipes 3 being horizontally mounted at both ends of the sieving box 2, the support pipes 3 being rotatably connected to the support 1, the support 1 being provided with a rotating mechanism connected to the sieving box 2, the rotating mechanism including a steering motor 4 and a driven gear 5, the driven gear 5 being fixedly mounted on the sieving box 2, and the steering motor 4 being connected to a drive gear 6 meshing with the driven gear 5.

[0025] The rotating mechanism controls the sieving box 2 to rotate on the upper end of the support 1. Both ends and the lower end of the sieving box 2 are equipped with suction hoses 7. The suction hoses 7 at both ends of the sieving box 2 are connected to the support pipes 3 on the same side. The lower end of the sieving box 2 is arc-shaped, which facilitates the alumina granulation powder to gather towards the center. The support 1 is equipped with a negative pressure vacuum cleaner 8 connected to each suction hose 7. The negative pressure vacuum cleaner 8 sucks the alumina granulation powder in the sieving box 2 into the negative pressure vacuum cleaner 8 for storage.

[0026] The screening box 2 is provided with an air inlet window at the top, and the air inlet window is connected to an air filter unit 9. The air filter unit 9 is existing technology and will not be described in detail here. The screening box 2 is provided with a first drive mechanism 10. The first drive mechanism 10 is provided with a drive shaft. The drive shaft extends into the screening box 2 and is connected to a screening screen cylinder 11. The screening box 2 is provided with a brush 12 corresponding to the side of the screening screen cylinder 11. During the rotation of the screening screen cylinder 11, the brush 12 cleans the side of the screening screen cylinder 11 to prevent the screening screen cylinder 11 from being blocked by alumina granulation powder.

[0027] The end of the screening cylinder 11 is rotatably sealed with a feed pipe 13, which extends to the outside of the screening box 2. The outer end of the feed pipe 13 is connected to a three-way pipe 14, and both the upper and lower ends of the three-way pipe 14 are connected to valves 15. The upper valve 15 is connected to a hopper 17, and the lower valve 15 is connected to a waste bin 16. The valves 15 are electric ball valves.

[0028] A spiral blade 18 is rotatably installed inside the feed pipe 13. A mounting base is installed outside the screening box 2. The mounting base is equipped with a forward and reverse motor 20 connected to the spiral blade 18. The forward and reverse motor 20 controls the forward and reverse rotation of the spiral blade 18, thereby controlling the feeding or discharging of the feed pipe 13. A positioning mechanism is installed on the support 1. The positioning mechanism includes a limiting tube 21, which is fixedly installed at the lower end of the screening box 2. A telescopic mechanism 22 extends vertically from the lower end of the support 1. When the feed pipe 13 is in a horizontal state, the limiting tube 21 and the telescopic mechanism 22 extend coaxially. The positioning mechanism facilitates the positioning of the screening box 2 during screening.

[0029] The specific working process is as follows: When sieving and purifying alumina granulated powder, the corresponding valve 15 is opened to transport the alumina granulated powder in the hopper 17 from the feed pipe 13 to the screening cylinder 11. At the same time, the forward and reverse motor 20 is started to drive the spiral blades 18 to rotate, transporting the alumina granulated powder in the feed pipe 13 to the screening cylinder 11. The first drive mechanism 10 is started to drive the screening cylinder 11 to rotate. The rotating screening cylinder 11 throws out the alumina granulated powder with qualified particle size into the screening box 2. During the rotation of the screening cylinder 11... The brush 12 brushes out the alumina granulation powder stuck in the screen cylinder to avoid clogging. Then, under the action of the negative pressure vacuum cleaner 8, the alumina granulation powder with the appropriate particle size is sucked into the negative pressure vacuum cleaner 8. When a certain amount of alumina granulation powder with a larger particle size accumulates in the screening screen cylinder 11, the screening box 2 is controlled to rotate 90 degrees until the feed pipe 13 is in a vertical state. The spiral blade 18 is reversed to discharge the unqualified alumina granulation powder in the screening screen cylinder 11 from the feed pipe 13, and the corresponding valve 15 is opened to transport the alumina granulation powder with a larger particle size to the waste bin 16.

[0030] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A sieving device for purifying alumina granulated powder, characterized in that: Includes a support frame (1), a sieving box (2) rotatably mounted on the upper end of the support frame (1), the sieving box (2) rotatably connected to the support frame (1), the support frame (1) is provided with a rotating mechanism connected to the sieving box (2), the two ends and the lower end of the sieving box (2) are provided with suction hoses (7), the support frame (1) is provided with a negative pressure vacuum cleaner (8) connected to each suction hose (7), the upper end of the sieving box (2) is provided with an air inlet window, the air inlet window is connected to an air filter unit (9), and the sieving box (2) is provided with a first drive inside. The mechanism (10) is connected to the screening cylinder (11) and the screening box (2) is provided with a brush (12) corresponding to the side of the screening cylinder (11). The end of the screening cylinder (11) is rotatably sealed with a feed pipe (13). The feed pipe (13) extends to the outside of the screening box (2). The feed pipe (13) is rotatably provided with a spiral blade (18). The outside of the screening box (2) is provided with a mounting base. The mounting base is provided with a forward and reverse motor (20) connected to the spiral blade (18).

2. The sieving device for purifying alumina granulated powder as described in claim 1, characterized in that: The feed pipe (13) is connected to a three-way pipe (14) at its outer end. Both the upper and lower ends of the three-way pipe (14) are connected to valves (15). The upper valve (15) is connected to a hopper (17), and the lower valve (15) is connected to a waste bin (16).

3. The sieving device for purifying alumina granulated powder as described in claim 2, characterized in that: The valve (15) is an electric ball valve.

4. The sieving device for purifying alumina granulated powder as described in claim 1, characterized in that: The rotating mechanism includes a steering motor (4) and a driven gear (5). The driven gear (5) is fixedly mounted on the screening box (2), and the steering motor (4) is connected to a drive gear (6) meshing with the driven gear (5).

5. The sieving device for purifying alumina granulated powder as described in claim 1, characterized in that: The lower end of the screening box (2) is arc-shaped.

6. The sieving device for purifying alumina granulated powder as described in claim 1, characterized in that: The bracket (1) is provided with a positioning mechanism, which includes a limiting tube (21). The limiting tube (21) is fixedly installed at the lower end of the screening box (2). The lower end of the bracket (1) has a telescopic mechanism (22) extending vertically. When the feed pipe (13) is in a horizontal state, the limiting tube (21) and the telescopic mechanism (22) extend coaxially.

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