Large superfine alpha aluminum oxide production equipment

Abstract

The utility model discloses large-scale superfine alpha alumina production equipment which comprises a mill cylinder, two ends of the mill cylinder are respectively arranged on a support through a bearing seat, the mill cylinder is connected with a power mechanism, two groups of mill doors are arranged on the mill cylinder, each group of mill doors are positioned on the same axis, and the two groups of mill doors are arranged on the same axis. The two groups of grinding doors are arranged at intervals along the circumference by 180 degrees, each group of grinding doors at least comprises two independent grinding doors, the independent grinding doors in the two groups of grinding doors are arranged in a staggered manner, a dust removal cover is arranged outside the grinding machine barrel, and a material inlet and a material outlet are formed in the dust removal cover relative to each grinding door; and the upper end of a connecting cover placed on a grinding top platform above the grinding machine barrel communicates with a feeding hose and a feeding dust removal opening, and the lower end of the connecting cover can stretch into the grinding door to achieve discharging. The automatic feeding and discharging device is high in yield, changes feeding and discharging modes, is high in automation degree, reduces manual operation, adopts a dustproof cover for integral sealing, and improves the field environment.

Description

Technical Field

[0001] This utility model relates to an alumina powder production technology, and in particular to a large-scale ultrafine α-alumina production equipment. Background Technology

[0002] Alpha alumina needs to be ground to below 2 micrometers for the production of high-end products such as precision ceramics. Traditional ultrafine grinding mills are small, intermittent mills. Small intermittent mills have low output, require manual feeding and unloading, have low automation, low operating efficiency, and a poor working environment. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a large-scale ultrafine α-alumina production equipment that is reasonably designed, has high production efficiency and improves the on-site environment.

[0004] The technical solution of this utility model is:

[0005] A large-scale ultrafine α-alumina production equipment includes a mill cylinder. Both ends of the mill cylinder are mounted on supports via bearing seats. The mill cylinder is connected to a power mechanism and is rotatable. Two sets of mill doors are provided on the mill cylinder, each set located on the same axis. The two sets of mill doors are spaced 180° apart along the circumference. Each set of mill doors contains at least two independent mill doors, which are staggered. A dust collector is fitted outside the mill cylinder. The inner annular holes at both ends of the dust collector are slidably sealed to the mill cylinder. An inlet / outlet is provided on the dust collector relative to each mill door.

[0006] A connecting cover is placed on the grinding top platform above the mill cylinder. The upper end of the connecting cover is connected to the feeding hose and the feeding dust removal port, respectively. The lower end of the connecting cover can extend into the mill door to feed material into the mill cylinder.

[0007] Furthermore, an arc-shaped plate is provided on the connecting cover, the arc-shaped plate having the same curvature as the mill cylinder, the arc-shaped plate both supporting the connecting cover and sealing the mill door.

[0008] Furthermore, the upper part of the dust removal hood is provided with at least one dust removal port.

[0009] Furthermore, the power mechanism includes a large gear ring, a drive gear, and a main motor. The main motor is connected to the drive shaft through a reducer and a coupling. The drive gear is mounted on the drive shaft and meshes with the large gear ring mounted on the mill cylinder, thereby driving the mill cylinder to rotate.

[0010] Furthermore, the main motor is connected to the auxiliary motor to increase the driving force.

[0011] The beneficial effects of this utility model are:

[0012] 1. This utility model has high output, changes the loading and unloading method, has a high degree of automation, reduces manual operation, and uses a dust cover for overall sealing, improving the on-site environment.

[0013] 2. The lower part of the special connecting cover of this utility model has the same size as the inner opening size of the mill door, which allows the special connecting cover to be inserted into the mill door. The upper part of the special connecting cover is provided with an arc plate, which has the same curvature as the large intermittent mill. The arc plate can support the special connecting cover and seal the mill door at the same time.

[0014] 3. This utility model has multiple grinding gates arranged in a 180° opposite direction, with the relative positions of the grinding gates staggered. When there are 7 grinding gates in a large intermittent mill, there are 4 grinding gates in a certain direction. After rotating 180°, there are 3 grinding gates. This design facilitates loading and unloading.

[0015] 4. This utility model has a reasonable design, high production efficiency, and improves the on-site environment. It is easy to promote and has good economic and social benefits. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a large-scale ultrafine α-alumina production equipment;

[0017] Figure 2 for Figure 1 The diagram shown is a side view of a large-scale ultrafine α-alumina production equipment.

[0018] Figure 3 for Figure 2 The diagram shows a large-scale ultrafine α-alumina production equipment without a power mechanism. Detailed Implementation

[0019] Example: See Figure 1 -- Figure 2 In the diagram, 1-connecting cover, 2-large gear ring, 3-bearing seat, 4-coupling, 5-reducer, 6-main motor, 7-auxiliary motor, 8-drive gear, 9-mill cylinder, 10-mill door, 11-dust hood, 12-support, 13-feeding dust removal port, 14-feeding hose, 15-mill top platform, 16-arc plate, 17-dust removal port.

[0020] A large-scale ultrafine α-alumina production equipment includes a mill cylinder 9. The two ends of the mill cylinder 9 are respectively mounted on the support 12 via bearing seats 3. The mill cylinder 9 is connected to a power mechanism and can rotate. The mill cylinder 9 is provided with two sets of grinding doors, each set of grinding doors is on the same axis, and the two sets of grinding doors are spaced 180° apart along the circumference. Each set of grinding doors contains at least two independent grinding doors 10. The independent grinding doors 10 in the two sets of grinding doors are staggered. A dust collector hood 11 is fitted on the outside of the mill cylinder 9. The inner ring holes of the circular end faces at both ends of the dust collector hood 11 are slidably sealed to the mill cylinder 9. A bracket is provided at the lower end of the dust collector hood 11 to keep the dust collector hood 11 stationary. The dust collector hood 11 is provided with an inlet and outlet port relative to each grinding door.

[0021] A connecting cover 1 is placed on the grinding top platform 15 above the mill cylinder 9. The upper end of the connecting cover 1 is connected to the feeding hose 14 and the feeding dust removal port 13 respectively. The lower end of the connecting cover 1 can extend into the mill door 10 to feed material into the mill cylinder 9.

[0022] Preferred solution: An arc-shaped plate 16 is provided on the connecting cover 1. The arc-shaped plate 16 has the same curvature as the mill cylinder 9. The arc-shaped plate 16 can both support the connecting cover 1 and seal the mill door 10. At least one dust removal port 17 is provided on the upper part of the dust removal cover 11.

[0023] Preferred solution: The power mechanism includes a large gear ring 2, a drive gear 8, and a main motor 6. The main motor 6 is connected to the drive shaft via a reducer 5 and a coupling 4. The drive shaft is equipped with the drive gear 8, which meshes with the large gear ring 2 mounted on the mill cylinder 9, driving the mill cylinder 9 to rotate. If necessary, an auxiliary motor can be added to increase the driving force.

[0024] 1-Connecting cover, 2-Large gear ring, 3-Bearing seat, 4-Coupling, 5-Reducer, 6-Main motor, 7-Auxiliary motor, 8-Drive gear, 9-Mill body, 10-Mill door, 11-Dust hood, 12-Support, 13-Feeding dust removal port, 14-Feeding hose, 15-Mill top platform, 16-Arc plate, 17-Dust removal port.

[0025] During operation, the material burned in the rotary kiln is conveyed to the loading port of the mill top platform 15 via a bucket elevator and air chute. The mill cylinder 9 has multiple mill doors 10, arranged 180° apart, with the relative positions of the doors staggered. For example, when there are seven mill doors, four are in one direction; after rotating 180°, three remain. This design facilitates loading and unloading (of course, more mill doors can be installed in a certain direction, such as five, six, or seven, depending on actual needs, and these are not listed individually). The loading port is located at the opening of its top platform and is connected to the air chute and mill doors by a feeding hose 14. During feeding, the mill doors 10 rotate to the loading port of the mill top platform 15. The operator manually opens the mill door 10. The feeding hose 14 and the feeding dust removal port 13 are in close contact with the mill door 10 through the connecting cover 1. The arc-shaped plate 16 on the connecting cover 1 matches the curvature of the mill cylinder 9. The arc-shaped plate 16 can support the connecting cover 1 and seal the mill door 10. The dust removal hood 11 covers the entire mill cylinder 9. A dust removal port 17 is set at the upper part of the dust removal hood 11, which improves the working environment on site.

[0026] When discharging, the mill door 10 is rotated to the bottom and opened. The material ground inside the mill cylinder 9 is discharged through the mill door 10 and discharged through the inlet and outlet on the dust collector 11, and enters the next process.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications made based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A large-scale ultrafine α-alumina production device, comprising a mill cylinder, wherein both ends of the mill cylinder are respectively mounted on supports via bearing seats, and the mill cylinder is connected to a power mechanism and is capable of rotation, characterized in that: The mill cylinder is provided with two sets of mill doors, each set of mill doors is on the same axis, and the two sets of mill doors are spaced 180° apart around the circumference. Each set of mill doors contains at least two independent mill doors, and the independent mill doors in the two sets of mill doors are staggered. The mill cylinder is fitted with a dust collector hood, and the inner ring holes of the circular end faces at both ends of the dust collector hood are slidably sealed to the mill cylinder. The dust collector hood is provided with an inlet and outlet port relative to each mill door. A connecting cover is placed on the grinding top platform above the mill cylinder. The upper end of the connecting cover is connected to the feeding hose and the feeding dust removal port, respectively. The lower end of the connecting cover can extend into the mill door to feed material into the mill cylinder.

2. The large-scale ultrafine α-alumina production equipment according to claim 1, characterized in that: An arc-shaped plate is provided on the connecting cover. The arc-shaped plate has the same curvature as the mill cylinder. The arc-shaped plate can both support the connecting cover and seal the mill door.

3. The large-scale ultrafine α-alumina production equipment according to claim 1, characterized in that: The dust removal hood is provided with at least one dust removal port on its upper part.

4. The large-scale ultrafine α-alumina production equipment according to claim 1, characterized in that: The power mechanism includes a large gear ring, a drive gear, and a main motor. The main motor is connected to the drive shaft through a reducer and a coupling. The drive gear is mounted on the drive shaft and meshes with the large gear ring mounted on the mill cylinder, thereby driving the mill cylinder to rotate.

5. The large-scale ultrafine α-alumina production equipment according to claim 4, characterized in that: The main motor is connected to the auxiliary motor to increase the driving force.

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