Ball mill for producing white corundum micro powder

Abstract

The utility model discloses a ball mill for producing white corundum micro powder, which comprises a cooling structure, the cooling structure is arranged on a roller and a support and comprises fins, an air suction cover, an arc-shaped cover and an exhaust fan, a plurality of fins which are distributed at equal intervals are welded on the outer side of the roller, the air suction cover is welded on the support, a through hole is formed in the bottom of the arc-shaped cover, and the exhaust fan is arranged in the through hole. The rotary drum is arranged in the air suction hood and connected with a top inlet of the air suction hood through a flange, the exhaust fan is arranged at a bottom outlet of the air suction hood through a flange, two ends of the rotary drum are connected with feeding pipes, and the feeding pipes at two ends are rotationally arranged on the support through bearing seats; according to the ball mill, the fins are arranged outside the roller, so that the heat dissipation area of the roller can be increased, the exhaust fan is arranged, air in the air suction cover and the arc-shaped cover can be completely discharged along with heat dissipated by the roller and the fins, the interiors of the air suction cover and the arc-shaped cover are in a negative pressure state, and therefore external air is sucked into the arc-shaped cover through negative pressure; and an air duct is formed, so that the roller is cooled.

Description

Technical Field

[0001] This utility model relates to the field of white fused alumina powder production technology, specifically a ball mill for white fused alumina powder production. Background Technology

[0002] White fused alumina powder is widely used in many industrial fields such as abrasives, refractory materials, and ceramics due to its high hardness and good wear resistance. In the production process of white fused alumina powder, the ball mill is an extremely important piece of equipment. Its function is to finely grind the white fused alumina raw material to obtain a powder product that meets specific particle size requirements.

[0003] White fused alumina powder may generate a lot of heat during ball milling, causing the temperature of the ball mill drum to rise. Prolonged operation of the ball mill at high temperatures will exacerbate the wear of the drum, reduce its service life and performance. Existing ball mills have simple structures and lack cooling functions for the drum.

[0004] Therefore, we have designed a ball mill for the production of white fused alumina micro powder to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of the existing technology by providing a ball mill for the production of white fused alumina micro powder, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a ball mill for producing white fused alumina micro powder, comprising a cooling structure, wherein the cooling structure is disposed on a drum and a support, and includes fins, a suction hood, an arc-shaped hood, and an exhaust fan. Multiple fins with equal spacing are welded to the outer side of the drum. The suction hood is welded to the support. The bottom of the arc-shaped hood has a through hole and is connected to the top inlet of the suction hood via a flange. The exhaust fan is installed at the bottom outlet of the suction hood via a flange. Feed pipes are connected to both ends of the drum, and the feed pipes at both ends are rotatably mounted on the support via bearing seats. The arc-shaped hood covers the lower half of the drum, and all fins are located inside the arc-shaped hood. A drive structure for driving the drum to rotate is provided on the support, and a support structure for assisting in material discharge is provided at the bottom of the support.

[0007] As a preferred technical solution of this utility model, the drive structure includes a gear ring, a motor, a gearbox, and a gear. The gear ring is welded to the left outer side of the drum. The motor and the gearbox are both installed on the left side of the bracket. The output shaft of the motor is connected to the input shaft of the gearbox. The gear is installed on the output shaft of the gearbox and meshes with the gear ring.

[0008] As a preferred technical solution of this utility model, the support structure includes a base frame, support columns and a hydraulic cylinder. The top right side of the base frame is rotatably mounted on the bottom right side of the bracket via a hinge. Two support columns are fixed on the top left side of the base frame. The top of the support columns supports the bottom left side of the bracket, and the roller on the bracket is in a horizontal state. Both ends of the hydraulic cylinder are rotatably connected to the bottom left side of the bracket and the top left side of the base frame via hinges.

[0009] As a preferred embodiment of this utility model, a discharge port is provided on the outer right side of the roller, and a detachable baffle is installed on the discharge port by bolts.

[0010] As a preferred technical solution of this utility model, a temperature sensor is installed on the arc-shaped cover. The temperature sensor is a non-contact infrared temperature sensor, and the detection end of the temperature sensor faces the outer wall of the roller.

[0011] As a preferred embodiment of this utility model, a control cabinet for controlling the operation of the control device is provided next to the bracket.

[0012] As a preferred embodiment of this invention, a pressure sensor is provided at the top of the support column.

[0013] Compared with the prior art, this utility model provides a ball mill for producing white fused alumina micro powder, which has the following beneficial effects:

[0014] This ball mill for producing white fused alumina micro powder increases the heat dissipation area of ​​the drum by installing fins on the outside of the drum. By installing an exhaust fan, all the air inside the suction hood and the arc-shaped hood, along with the heat dissipated by the drum and fins, can be discharged. This creates a negative pressure state inside the suction hood and the arc-shaped hood, thereby drawing outside air into the arc-shaped hood through the negative pressure, forming an air duct, and achieving cooling of the drum to reduce the impact of temperature on the ball mill drum. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the cooling structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the driving structure of this utility model;

[0018] Figure 4 This is a schematic diagram showing the installation position of the temperature sensor of this utility model.

[0019] Reference numerals in the attached drawings: 1. Fin; 2. Suction hood; 3. Arc-shaped hood; 4. Exhaust fan; 5. Roller; 6. Support; 7. Gear ring; 8. Motor; 9. Gearbox; 10. Gear; 11. Base frame; 12. Support column; 13. Hydraulic cylinder; 14. Baffle; 15. Temperature sensor. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1: Please refer to Figures 1-4 In this embodiment, the ball mill for producing white fused alumina micro powder mainly consists of core components such as a cooling structure and a drive structure. The cooling structure is installed on the drum 5 and the support 6. Multiple fins 1 with equal spacing are welded to the outside of the drum 5. The fins 1 can increase the heat dissipation area of ​​the drum 5. The suction hood 2 is welded to the support 6. The bottom of the arc-shaped cover 3 has a through hole and is connected to the top inlet of the suction hood 2 through a flange. The exhaust fan 4 is installed at the bottom outlet of the suction hood 2 through a flange. The two ends of the drum 5 are connected to the feed pipes and are rotatably mounted on the support 6 through bearing seats. The arc-shaped cover 3 covers the lower half of the drum 5, and all the fins 1 are located inside the arc-shaped cover 3. The edge of the fin does not contact the outer wall of the roller 5 to avoid affecting the rotation of the roller 5. The distance between the inner wall of the arc-shaped cover 3 and the outer wall of the roller 5 is slightly larger than the width of the fin 1. Outside air can enter the interior of the arc-shaped cover 3 through the gap between the arc-shaped cover 3 and the roller 5. At the same time, when the air enters, it can pass through the gap between two adjacent fins 1. When the exhaust fan 4 is working, it will exhaust all the air in the arc-shaped cover 3 and the suction cover along with the heat emitted by the roller 5 and the fins 1, so that the interior of the arc-shaped cover 3 and the suction cover 2 is in a negative pressure state, so that outside air can enter the arc-shaped cover 3 under the action of negative pressure, forming an air duct, and realizing the air cooling of the roller 5.

[0022] In terms of the drive structure, the gear ring 7 is welded to the outer left side of the drum 5. The motor 8 and the gearbox 9 are installed on the left side of the bracket 6. The output shaft of the motor 8 is connected to the input shaft of the gearbox 9. The gear 10 is installed on the output shaft of the gearbox 9 and meshes with the gear ring 7. After the motor 8 starts, it reduces speed and increases torque through the gearbox 9, which drives the gear 10 to rotate, thereby causing the gear ring 7 to drive the drum 5 to rotate.

[0023] Example 2: This example optimizes the discharge function of the device based on Example 1. A support structure for assisting discharge is provided at the bottom of the bracket 6. In this support structure, the top right side of the base frame 11 is hinged and mounted on the bottom right side of the bracket 6. Two support columns 12 are fixed to the top left side of the base frame 11, with the tops of the support columns 12 supporting the bottom left side of the bracket 6, ensuring the roller 5 on the bracket 6 is horizontal. The two ends of the hydraulic cylinder 13 are hinged and rotatably connected to the bottom left side of the bracket 6 and the top left side of the base frame 11, respectively. The hydraulic cylinder 13 is connected to an external hydraulic control system. A discharge port is provided on the outer right side of the roller 5, and a removable baffle 14 is bolted to the discharge port. During ball milling, the baffle 14 prevents material and grinding media from leaking from the discharge port. A control cabinet is installed next to the support 6. The control cabinet can control the operation of the motor 8 and the hydraulic cylinder 13. When discharging material, the baffle 14 on the discharge port is removed and the discharge port is set downward. Then, the hydraulic cylinder 13 is extended by controlling the control cabinet, which can lift the left side of the support 6 and tilt the roller 5 at a certain angle so that the material in the roller 5 can slide towards the discharge port under the action of gravity. A pressure sensor is installed on the top of the support column 12, which can play a limit protection role. When it is necessary to reset the support 6, the hydraulic cylinder 13 is shortened by controlling the control cabinet, so that the support 6 rotates back. When the support 6 presses on the support column 12, the pressure sensor will sense the pressure and transmit the pressure signal to the control cabinet. The control cabinet controls the hydraulic cylinder 13 to stop working to avoid the hydraulic cylinder 13 from contracting too much.

[0024] Example 3: Based on Example 1, this example further optimizes the roller 5 by installing multiple liners arranged in a circular array on the inner wall of the roller 5. When the roller 5 rotates, the liners can increase the lifting height and falling kinetic energy of the grinding media, thereby enhancing the impact and grinding effect on the material and improving the grinding efficiency.

[0025] Example 4: This example adds a temperature monitoring function to Example 1. A temperature sensor 15 is installed on the arc-shaped cover 3. The temperature sensor 15 is a non-contact infrared temperature sensor with its detection end facing the outer wall of the drum 5. The temperature sensor 15 can monitor the temperature of the drum 5 in real time and transmit the temperature data to the control cabinet. The control cabinet determines whether the temperature of the drum 5 is too high based on the received temperature data. If the temperature is too high, it can automatically control the exhaust fan 4 to increase its speed to enhance the heat dissipation effect. If the temperature is normal, it maintains the current speed of the exhaust fan 4, realizing intelligent monitoring and control of the ball mill temperature and ensuring the stable operation of the ball mill.

[0026] Operating Procedure: When using this ball mill for producing white fused alumina micro powder, the white fused alumina raw material to be ball-milled and the grinding media are added into the drum 5 through the feed pipes at both ends of the drum 5. After feeding, the motor 8 is started through the control cabinet. The motor 8 drives the gear 10 to rotate through the reduction gearbox 9. The gear 10 meshes with the gear ring 7, thereby driving the drum 5 to start rotating and ball-milling the white fused alumina raw material inside the drum 5. During the ball milling process, the exhaust fan 4 is started through the control cabinet to exhaust all the air in the arc-shaped cover 3 and the suction cover, along with the heat emitted by the drum 5 and the fins 1, so that the inside of the arc-shaped cover 3 and the suction cover 2 is kept in a cool and dry environment. The negative pressure state allows outside air to enter the arc-shaped cover 3 under negative pressure, forming an air duct to cool the drum 5. When the ball mill reaches the predetermined time or the raw material reaches the required fineness, the motor 8 is stopped by the control cabinet, causing the drum 5 to stop rotating. Then, the baffle 14 on the right discharge port of the drum 5 is removed. At the same time, the hydraulic cylinder 13 is extended by the control cabinet, causing the drum 5 to tilt at a certain angle so that the white corundum powder can slide towards the discharge port under the action of gravity. After the discharge is completed, the hydraulic cylinder 13 is shortened by the control cabinet, causing the drum 5 to return to the horizontal state. Finally, the baffle 14 is reinstalled back at the discharge port.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A ball mill for producing white fused alumina micro powder, comprising a cooling structure, characterized in that: The cooling structure is set on the drum (5) and the support (6), and includes fins (1), suction hood (2), arc-shaped cover (3) and exhaust fan (4). Multiple fins (1) with equal spacing are welded on the outside of the drum (5). The suction hood (2) is welded on the support (6). The bottom of the arc-shaped cover (3) has a through hole and is connected to the top inlet of the suction hood (2) through a flange. The exhaust fan (4) is installed at the bottom outlet of the suction hood (2) through a flange. Both ends of the drum (5) are connected to feed pipes, and the feed pipes at both ends are rotatably installed on the support (6) through bearing seats. The arc-shaped cover (3) covers the lower half of the drum (5). All fins (1) are located inside the arc-shaped cover (3). The support (6) is provided with a drive structure for driving the drum (5) to rotate. The bottom of the support (6) is provided with a support structure for assisting in material discharge.

2. The ball mill for producing white fused alumina micro powder according to claim 1, characterized in that: The drive structure includes a gear ring (7), a motor (8), a gearbox (9), and a gear (10). The gear ring (7) is welded to the left outer side of the drum (5). The motor (8) and the gearbox (9) are both installed on the left side of the bracket (6). The output shaft of the motor (8) is connected to the input shaft of the gearbox (9). The gear (10) is installed on the output shaft of the gearbox (9) and meshes with the gear ring (7).

3. The ball mill for producing white fused alumina micro powder according to claim 1, characterized in that: The support structure includes a base frame (11), support columns (12) and a hydraulic cylinder (13). The top right side of the base frame (11) is hinged and mounted on the bottom right side of the bracket (6). Two support columns (12) are fixed to the top left side of the base frame (11). The top of the support columns (12) is supported on the bottom left side of the bracket (6) and the roller (5) on the bracket (6) is in a horizontal state. Both ends of the hydraulic cylinder (13) are hinged and rotatably connected to the bottom left side of the bracket (6) and the top left side of the base frame (11).

4. The ball mill for producing white fused alumina micro powder according to claim 1, characterized in that: The right outer side of the roller (5) is provided with a discharge port, and a detachable baffle (14) is installed on the discharge port by bolts.

5. The ball mill for producing white fused alumina micro powder according to claim 1, characterized in that: A temperature sensor (15) is installed on the arc-shaped cover (3). The temperature sensor (15) is a non-contact infrared temperature sensor, and the detection end of the temperature sensor (15) faces the outer wall of the roller (5).

6. The ball mill for producing white fused alumina micro powder according to claim 1, characterized in that: A control cabinet for controlling the operation of the device is provided next to the bracket (6).

7. A ball mill for producing white fused alumina micro powder according to claim 3, characterized in that: A pressure sensor is provided on the top of the support column (12).

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