Crushing device for boehmite micro powder processing

Abstract

The utility model discloses a crushing device for boehmite micro powder processing, which belongs to the technical field of boehmite processing devices, and comprises a fixed frame, a first roller, a second roller, a negative pressure machine, a first filter screen, a second filter screen and two groups of driving mechanisms, the first roller and the second roller are both hinged on the fixed frame; by keeping the second roller to rotate at a low speed and the first roller to rotate at a high speed, large boehmite blocks enter the second roller and are crushed into small boehmite blocks by large metal balls, and negative pressure generated by the negative pressure machine is transmitted into the second roller from the first roller; the first filter screen and the second filter screen are arranged, so that small boehmite blocks meeting the screening requirement of the first filter screen enter the first roller, the small boehmite blocks enter the first roller and are crushed into boehmite micro powder by small metal balls, the second filter screen prevents the micro powder from entering the negative pressure machine, the boehmite crushing operation is continuously carried out, and the boehmite crushing processing efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of boehmite processing devices, and particularly relates to a crushing device for boehmite fine powder processing. Background Art

[0002] Boehmite has been widely used in the fields of ceramic materials, composite materials, surface protective layer materials, optical materials, catalysts and carrier materials, semiconductor materials, coatings, etc. due to its unique chemical, optical, and mechanical properties. The main processing procedures of boehmite include raw material pulping, slurry treatment, crystal form conversion, post-treatment, drying, air flow dispersion, and packaging.

[0003] Currently, when a ball mill is used for crushing and processing, large metal balls need to be put in for low-speed crushing of large pieces of boehmite, and small metal balls need to be put in for high-speed crushing of small pieces of boehmite. Two grinding procedures are required, resulting in low efficiency of boehmite crushing and processing. Content of the Utility Model

[0004] The purpose of the utility model is to provide a crushing device for boehmite fine powder processing in order to solve the above-mentioned existing problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: A crushing device for boehmite fine powder processing, which includes a fixed frame, a first roller, a second roller, a negative pressure machine, a first filter screen, a second filter screen, and two groups of driving mechanisms. The first roller and the second roller are both hinged to the fixed frame. The feed pipe of the first roller is connected to the discharge pipe of the second roller. The first filter screen and the second filter screen are respectively installed in the feed pipe and the discharge pipe of the first roller. The negative pressure machine is installed on the discharge pipe of the first roller. The two groups of driving mechanisms are both installed on the fixed frame, and the two groups of driving mechanisms are respectively connected to and drive the first roller and the second roller.

[0006] As a further description of the above technical scheme:

[0007] The rotation speed of the first roller is higher than that of the second roller.

[0008] As a further description of the above technical scheme:

[0009] The mesh number of the first filter screen is smaller than that of the second filter screen.

[0010] As a further description of the above technical scheme:

[0011] The first roller and the second roller are both connected to the fixed frame through a plurality of bearings.

[0012] As a further description of the above technical scheme:

[0013] Discharge openings are provided on both the first roller and the second roller.

[0014] As a further description of the above technical solution:

[0015] The drive mechanism includes a drive motor, a drive gear and an annular rack. The drive motor is fixedly installed on the fixed frame. The annular rack is sleeved on the first roller and / or the second roller. The drive gear is installed on the output end of the drive motor, and the drive gear meshes with the annular rack.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present utility model are as follows:

[0017] 1. In the present utility model, by keeping the second roller rotating at a low speed and the first roller rotating at a high speed, large pieces of boehmite enter the second roller and are broken into small pieces of boehmite by large metal balls. The negative pressure generated by the negative pressure machine is transmitted from the first roller to the inside of the second roller, so that the small pieces of boehmite that meet the screening of the first filter screen enter the first roller. The small pieces of boehmite enter the first roller and are crushed into boehmite fine powder by small metal balls. The second filter screen prevents the fine powder from entering the negative pressure machine, making the crushing operation of boehmite continuous and greatly improving the crushing and processing efficiency of boehmite.

[0018] 2. In the present utility model, the drive motor rotates to drive the drive gear to rotate, and the drive gear rotates to drive the annular rack to operate, thereby driving the first roller or the second roller to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic view of the overall structure of a crushing device for boehmite fine powder processing Figure I .

[0020] Figure 2 is a schematic view of the overall structure of a crushing device for boehmite fine powder processing Figure II .

[0021] Figure 3 is a cross-sectional view of a crushing device for boehmite fine powder processing.

[0022] Legend:

[0023] 1. Fixed frame; 2. First roller; 3. Second roller; 4. Negative pressure machine; 5. First filter screen; 6. Second filter screen; 7. Drive mechanism; 71. Drive motor; 72. Drive gear; 73. Annular rack; 8. Bearing; 9. Discharge opening. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1-3 , the present invention provides a technical solution: a crushing device for the processing of boehmite fine powder, including a fixed frame 1, a first roller 2, a second roller 3, a negative pressure machine 4, a first filter screen 5, a second filter screen 6, and two groups of driving mechanisms 7. The first roller 2 and the second roller 3 are both hinged on the fixed frame 1. The feed pipe of the first roller 2 is butted against the discharge pipe of the second roller 3. The first filter screen 5 and the second filter screen 6 are respectively installed in the feed pipe and the discharge pipe of the first roller 2. The negative pressure machine 4 is installed on the discharge pipe of the first roller 2. The two groups of driving mechanisms 7 are both installed on the fixed frame 1, and the two groups of driving mechanisms 7 are respectively connected to and drive the first roller 2 and the second roller 3;

[0026] The rotation speed of the first roller 2 is higher than that of the second roller 3. The second roller 3 is used for crushing large pieces of boehmite, and the first roller 2 is used for pulverizing small pieces of boehmite;

[0027] The mesh number of the first filter screen 5 is smaller than that of the second filter screen 6, ensuring that small pieces of boehmite can pass through the first filter screen 5 and smoothly enter the first roller 2 from the second roller 3, and at the same time ensuring that the pulverized fine powder will not enter the negative pressure machine 4;

[0028] Both the first roller 2 and the second roller 3 are connected to the fixed frame 1 through a plurality of bearings 8, ensuring the smooth rotation of the first roller 2 and the second roller 3;

[0029] Both the first roller 2 and the second roller 3 are provided with discharge ports 9, facilitating the discharging operation of the materials in the first roller 2 and the second roller 3;

[0030] The driving mechanism 7 includes a driving motor 71, a driving gear 72, and an annular rack 73. The driving motor 71 is fixedly installed on the fixed frame 1. The annular rack 73 is sleeved on the first roller 2 and / or the second roller 3. The driving gear 72 is installed on the output end of the driving motor 71, and the driving gear 72 meshes with the annular rack 73. The rotation of the driving motor 71 drives the rotation of the driving gear 72, and the rotation of the driving gear 72 drives the operation of the annular rack 73, thereby driving the rotation of the first roller 2 or the second roller 3.

[0031] Working principle: First, the driving motor 71 rotates to drive the driving gear 72 to rotate. The rotation of the driving gear 72 drives the annular rack 73 to operate, thereby driving the second roller 3 to rotate. Large metal balls are placed in the second roller 3. Under the support of the bearing 8, the second roller 3 rotates smoothly at a low speed. Secondly, large pieces of boehmite enter the second roller 3 and are broken into small pieces of boehmite by the large metal balls. The negative pressure generated by the negative pressure machine 4 is transmitted from the first roller 2 to the second roller 3, so that the small pieces of boehmite that meet the screening of the first filter screen 5 enter the first roller 2. Then, the driving motor 71 rotates to drive the driving gear 72 to rotate. The rotation of the driving gear 72 drives the annular rack 73 to operate, thereby driving the first roller 2 to rotate. Small metal balls are placed in the first roller 2. Under the support of the bearing 8, the first roller 2 rotates smoothly at a high speed. Finally, the small pieces of boehmite enter the first roller 2 and are crushed into boehmite fine powder by the small metal balls. The second filter screen 6 prevents the fine powder from entering the negative pressure machine 4, making the crushing operation of boehmite continuous, greatly improving the crushing and processing efficiency of boehmite. The finished boehmite fine powder can be discharged from the discharge port 9 of the first roller 2.

[0032] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A pulverizing device for boehmite micropowder processing, characterized in that: The invention comprises a fixed frame (1), a first roller (2), a second roller (3), a negative pressure machine (4), a first filter screen (5), a second filter screen (6) and two sets of driving mechanisms (7), wherein the first roller (2) and the second roller (3) are both hinged on the fixed frame (1), the feed pipe of the first roller (2) is connected to the discharge pipe of the second roller (3), the first filter screen (5) and the second filter screen (6) are respectively installed in the feed pipe and the discharge pipe of the first roller (2), the negative pressure machine (4) is installed on the discharge pipe of the first roller (2), and the two sets of driving mechanisms (7) are both installed on the fixed frame (1), and the two sets of driving mechanisms (7) are respectively connected to and drive the first roller (2) and the second roller (3).

2. A pulverizing device for boehmite micropowder processing according to claim 1, characterized in that: The rotation speed of the first roller (2) is higher than the rotation speed of the second roller (3).

3. A pulverizing device for boehmite micropowder processing according to claim 2, characterized in that: The mesh number of the first filter screen (5) is smaller than the mesh number of the second filter screen (6).

4. A pulverizing device for boehmite micropowder processing according to claim 3, characterized in that: The first roller (2) and the second roller (3) are both connected to the fixed frame (1) via a plurality of bearings (8).

5. A pulverizing device for boehmite micropowder processing according to claim 4, characterized in that: The first roller (2) and the second roller (3) are both provided with a discharge port (9).

6. A pulverizing device for boehmite micropowder processing according to claim 5, characterized in that: The driving mechanism (7) comprises a driving motor (71), a driving gear (72) and an annular rack (73); the driving motor (71) is fixedly mounted on the fixed frame (1); the annular rack (73) is sleeved on the first roller (2) and / or the second roller (3); the driving gear (72) is mounted on the output end of the driving motor (71), and the driving gear (72) is meshed with the annular rack (73).

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