Ball mill for producing nanometer aluminum oxide sol

Abstract

The utility model relates to the technical field of nano aluminum oxide production, in particular to a ball mill for nano aluminum oxide sol production, which comprises a support, a barrel rotatably arranged at the upper end of the support, a grinding body filled in the barrel, an inlet and an outlet respectively arranged at two ends of the barrel, an outer gear ring arranged on the side face of the barrel, and a driving mechanism arranged on the support. The driving mechanism comprises a driving gear meshed with the outer gear ring, a pool with the upper end open is arranged on a support at the lower end of the barrel, a water pump is arranged in the pool, and a water supply unit connected with the pool is arranged on the support. The lower end of the barrel body is in contact with cooling water in a water pool, and the side wall of the barrel body is coated with the cooling water along with rotation of the barrel body, so that the barrel body is cooled.

Description

Technical Field

[0001] The utility model relates to the technical field of nano-alumina production, in particular to a ball mill for producing nano-alumina sol. Background Art

[0002] Nano alumina sol is an aluminum sol used in the inorganic fiber and refractory industry. The process of producing nano alumina sol includes: adding powdered aluminum salt to an appropriate amount of solvent, stirring until dissolved, and then adding alkaline substances such as ammonia water, sodium hydroxide, etc. to cause hydrolysis reaction to generate aluminum hydroxide colloid; and powdered aluminum salt needs to be processed by grinding equipment. Commonly used grinding equipment includes ball mill. The working principle of the ball mill is to load a certain number of steel balls into its cylinder as grinding media, and use the movement of the steel balls in the cylinder to crush the materials in the cylinder. However, heat is easily generated during the grinding process. The accumulation of heat is likely to cause equipment failure. Therefore, it is particularly necessary to develop a ball mill for the production of nano alumina sol that can perform autonomous cooling. Summary of the invention

[0003] The utility model aims to provide a ball mill for producing nano-alumina sol, which has the advantage of autonomous temperature reduction.

[0004] The technical solutions adopted are as follows:

[0005] A ball mill for producing nano-alumina sol comprises a bracket, a cylinder is rotatably arranged on the upper end of the bracket, a grinding body is filled in the cylinder, an inlet and an outlet are respectively arranged at both ends of the cylinder, an outer gear ring is arranged on the side of the cylinder, a driving mechanism is arranged on the bracket, the driving mechanism comprises a driving gear meshing with the outer gear ring, a water pool with an upper end opening is arranged on the bracket at the lower end of the cylinder, a water pump is arranged in the water pool, and a water supply unit connected to the water pool is arranged on the bracket.

[0006] Preferably, two annular baffles are arranged on the side of the cylinder, and the water pool is arranged between the two annular baffles.

[0007] Preferably, a plurality of water storage bodies are evenly arranged on the side of the cylinder, the water storage body comprises a mesh tube filled with a sponge, a compression spring is arranged outside the sponge, and the compression spring is connected to a counterweight block.

[0008] Preferably, the bracket is provided with a plurality of cooling fans facing the cylinder.

[0009] Preferably, a liquid level detection device is provided in the water pool.

[0010] Compared with the prior art, the beneficial effects are:

[0011] 1. The lower end of the cylinder of the utility model contacts the cooling water sprayed by the water pump. As the cylinder rotates, the cooling water is applied to the side wall of the cylinder to cool the cylinder. The water supply unit is used to supply water to the water pool to keep the liquid level in the water pool stable.

[0012] 2. The water storage body of the utility model absorbs the water in the pool into the sponge. As the cylinder rotates until the counterweight block reaches the upper end of the compression spring, the counterweight block presses down the sponge under the action of gravity to squeeze out the water in the sponge, so that the water wets the cylinder, realizing the cooling of the cylinder, and the cooling fan accelerates the cooling of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional structural schematic diagram of a ball mill for producing nano-alumina sol in the utility model.

[0014] Figure 2 This is a rear view structural schematic diagram of a ball mill for producing nano-alumina sol in the utility model.

[0015] Figure 3 This is a right view structural schematic diagram of a ball mill for producing nano-alumina sol in the utility model.

[0016] Figure 4 This is a schematic cross-sectional structure diagram of a water storage body of a ball mill for producing nano-alumina sol in the utility model.

[0017] In the figure: 1. bracket, 2. cylinder, 3. inlet, 4. outlet, 5. outer gear ring, 6. driving mechanism, 61. driving gear, 7. water tank, 8. water supply unit, 9. annular baffle, 10. water storage body, 101. mesh tube, 102. sponge, 103. compression spring, 104. counterweight, 11. cooling fan, 12. water pump. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with specific embodiments. Figures 1 to 4 As shown:

[0019] Embodiment 1: A ball mill for producing nano-alumina sol, comprising a support 1, a cylinder 2 is rotatably provided on the upper end of the support 1, the cylinder 2 is filled with grinding bodies, an inlet 3 and an outlet 4 are respectively provided at both ends of the cylinder 2, the inlet 3 and the outlet 4 are respectively used for adding raw materials and outputting powder, an outer gear ring 5 is provided on the side of the cylinder 2, a driving mechanism 6 is provided on the support 1, the driving mechanism 6 comprises a driving gear 61 meshing with the outer gear ring 5, the driving gear 61 drives the outer gear ring 5 to rotate, thereby driving the cylinder 2 to rotate,

[0020] As the cylinder 2 rotates, the grinding body grinds the alumina ceramic filled into the cylinder 2. A water pool 7 with an upper end opening is provided on the bracket 1 at the lower end of the cylinder 2. A water supply unit 8 connected to the water pool 7 is provided on the bracket 1. A water pump 12 is provided in the water pool 7. The lower end of the cylinder 2 is wetted by contact with the water sprayed by the water pump 12. As the cylinder 2 rotates, the cooling water is applied to the side wall of the cylinder 2 to cool the cylinder 2. The water supply unit 8 is used to supply water to the water pool 7, thereby keeping the liquid level in the water pool 7 stable.

[0021] Embodiment 2: A ball mill for producing nano-alumina sol, comprising a support 1, a cylinder 2 is rotatably provided on the upper end of the support 1, the cylinder 2 is filled with grinding bodies, an inlet 3 and an outlet 4 are respectively provided at both ends of the cylinder 2, the inlet 3 and the outlet 4 are respectively used for adding raw materials and outputting powder, an outer gear ring 5 is provided on the side of the cylinder 2, and a driving mechanism 6 is provided on the support 1, the driving mechanism 6 includes a driving gear 61 meshing with the outer gear ring 5, the driving gear 61 drives the outer gear ring 5 to rotate, thereby driving the cylinder 2 to rotate,

[0022] As the cylinder 2 rotates, the grinding body grinds the alumina ceramic filled into the cylinder 2. A water pool 7 with an upper end opening is provided on the bracket 1 at the lower end of the cylinder 2. A water supply unit 8 connected to the water pool 7 is provided on the bracket 1. A liquid level detection device is provided in the water pool 7. The liquid level detection device monitors the liquid level, so that the liquid level of the water pool 7 can be regulated by the water supply unit 8. Two annular baffles 9 are provided on the side of the cylinder 2. The water pool 7 is provided between the two annular baffles 9. The annular baffles 9 play a role of blocking water to prevent water from splashing onto the driving gear 61 and the outer gear ring 5.

[0023] A plurality of water storage bodies 10 are evenly arranged on the side of the cylinder 2, and the water storage body 10 includes a mesh tube 101, and the mesh tube 101 is filled with a sponge 102. A compression spring 103 is arranged outside the sponge 102, and the compression spring 103 is connected to a counterweight 104. When the water storage body 10 is at the lower end of the cylinder 2, the water storage body 10 absorbs the water in the pool 7 into the sponge 102. As the cylinder 2 rotates until the counterweight 104 reaches the upper end of the compression spring 103, the counterweight 104 presses down the sponge 102 under the action of gravity, so that the water in the sponge 102 is squeezed out, so that the water wets the cylinder 2, and the cylinder 2 is cooled. A plurality of cooling fans 11 facing the cylinder 2 are arranged on the bracket 1, and the cooling fans 11 accelerate the cooling of the cylinder 2.

[0024] The specific working process is as follows: the alumina ceramic raw material to be crushed is put into the cylinder 2 from the inlet 3, and the driving mechanism 6 drives the cylinder 2 to rotate. During the rotation, the grinding body is used to impact the alumina ceramic raw material to break the alumina ceramic raw material, and heat is generated during the grinding process. The water supply unit 8 is used to supply water to the water pool 7. A water pump 12 is provided in the water pool 7. The lower end of the cylinder 2 is wetted by contact with the water sprayed by the water pump 12. As the cylinder 2 rotates, the cooling water is applied to the side wall of the cylinder 2 to cool the cylinder 2. The water supply unit 8 is used to supply water to the water pool 7 to keep the liquid level in the water pool 7 stable, and the water storage body 10 is used to transfer the water in the water pool 7 to the upper end of the cylinder 2 and discharge it to wet the cylinder 2, and the cooling fan 11 is used to accelerate the cooling of the cylinder 2.

[0025] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A ball mill for producing nano-alumina sol, characterized in that: It includes a bracket, a cylinder is rotatably arranged on the upper end of the bracket, the cylinder is filled with a grinding body, an inlet and an outlet are respectively arranged at both ends of the cylinder, an outer gear ring is arranged on the side of the cylinder, a driving mechanism is arranged on the bracket, the driving mechanism includes a driving gear meshing with the outer gear ring, a water pool with an upper end opening is arranged on the bracket at the lower end of the cylinder, a water pump is arranged in the water pool, and a water supply unit connected to the water pool is arranged on the bracket.

2. A ball mill for producing nano-alumina sol as claimed in claim 1, characterized in that: Two annular baffles are arranged on the side of the cylinder, and the water pool is arranged between the two annular baffles.

3. A ball mill for producing nano-alumina sol according to claim 1, characterized in that: A plurality of water storage bodies are evenly arranged on the side of the cylinder, and the water storage bodies include mesh tubes filled with sponges, and compression springs are arranged outside the sponges, and the compression springs are connected with counterweights.

4. A ball mill for producing nano-alumina sol according to claim 1, characterized in that: The bracket is provided with a plurality of cooling fans facing the barrel.

5. A ball mill for producing nano-alumina sol according to claim 1, characterized in that: A liquid level detection device is arranged in the water pool.

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