Rotary drying device for fused magnesia production

Abstract

The utility model discloses a rotary drying device for fused magnesite production, which relates to the technical field of drying devices and comprises a barrel, an air supply pipe is fixedly arranged at the center of the barrel, a rotating pipe is rotatably arranged on the outer side of the air supply pipe, a plurality of pairs of branch pipes are fixedly arranged on the outer wall surface of the rotating pipe, and a shifting plate is fixedly mounted on each branch pipe. The stirring plate is connected to the inner wall face of the cylinder in an abutting mode, the stirring plate is of a hollow structure and communicates with the branch pipe, a plurality of air outlet holes are formed in the side wall of the stirring plate, an opening is formed in the air supply pipe, and the opening faces the lower portion of the cylinder and deviates towards one side of the rotating direction of the rotating pipe. According to the drying device, after the branch pipe is driven by the rotating pipe to move to the opening, drying air in the air supply pipe can enter the branch pipe through the opening, and the purpose that the drying air is discharged only when the stirring plate makes contact with raw materials on one side of the lower portion of the barrel is achieved; part of drying air is prevented from being directly discharged without being in contact with the raw materials.

Description

Technical Field

[0001] The utility model relates to the technical field of drying devices, in particular to a rotary drying device for producing fused magnesia. Background Art

[0002] Fused magnesia is a general term for the products of magnesia raw materials such as magnesia ore that have been sintered by high-temperature treatment. Magnesia sintered from natural magnesia ore by high-temperature equipment such as vertical kilns and rotary kilns in a single calcination or two-step calcination process is called sintered magnesia; magnesia is one of the most important raw materials for refractory materials and is used to manufacture various magnesia bricks, magnesia-alumina bricks, ramming materials, furnace fillers, etc. Those containing more impurities are used to pave the bottom of steelmaking furnaces, etc.; when preparing fused magnesia, the raw materials need to be dried by a drying device;

[0003] For example, in the utility model patent with the announcement number CN220018003U, a drying device for producing fused magnesia is disclosed, comprising a bottom plate, a pair of columns are fixedly mounted on the bottom plate, a pair of rotating drums are rotatably mounted on the opposite side walls of the pair of columns, a drying drum is fixedly mounted between the pair of rotating drums, and a plurality of copying plates are arranged in a circular array along the circumferential inner wall of the drying drum; a drying box is fixedly mounted on the columns on one side, an air inlet pipe is fixedly connected to the exhaust end of the drying box, the other end of the air inlet pipe passes through the columns and the rotating drum and is connected to one side of the drying drum, an air outlet pipe is connected to the other side of the drying drum, the other end of the air outlet pipe passes through the rotating drum and the columns and is connected to the outside, and the rotating drum is rotatably mounted on the air inlet pipe and the air outlet pipe;

[0004] However, during drying, part of the drying air of the utility model cannot contact the raw materials and is directly discharged through the exhaust port, which reduces the drying efficiency, increases the energy consumption, and has a poor use effect. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a rotary drying device for producing fused magnesia to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the utility model is implemented through the following technical scheme: a rotary drying device for producing fused magnesia sand, comprising a cylinder, an air supply pipe is fixedly arranged at the center of the cylinder, a rotating pipe is rotatably arranged on the outer side of the air supply pipe, a plurality of pairs of branch pipes are fixedly arranged on the outer wall of the rotating pipe, a paddle plate is fixedly installed on each of the branch pipes, the paddle plate abuts against the inner wall surface of the cylinder, the paddle plate is a hollow structure and is connected to the branch pipe, a plurality of air outlet holes are provided on the side wall of the paddle plate, an opening is provided on the air supply pipe, the opening faces the bottom of the cylinder and is offset to one side of the rotation direction of the rotating pipe, when the rotating pipe drives the branch pipe to rotate to the bottom of the cylinder, the gas in the air supply pipe can enter the branch pipe through the opening, one end of the air supply pipe extends to the outside of the cylinder and is connected to a heater and a blower through a pipeline, a feed port is provided on one side of the cylinder, a discharge port is provided at the bottom of the other side of the cylinder, and the rotating pipe is connected to a driving assembly.

[0007] Preferably, the driving assembly includes a motor, which is fixed on the outer wall of the cylinder. One end of the rotating tube extends to the outside of the cylinder and is fixedly provided with a driven pulley. The driving end of the motor is fixedly installed with a driving pulley, and a belt drive is used between the driving pulley and the driven pulley.

[0008] Preferably, a feed hopper is fixedly arranged on the outer side of the feed port, and a discharge hopper is fixedly arranged on the outer side of the discharge port.

[0009] Preferably, a plurality of exhaust ports are provided above the cylinder.

[0010] Preferably, the angle between each pair of branch pipes is 180 degrees, and two pairs of branch pipes adjacent to each other along the axis of the rotating pipe are perpendicular to each other.

[0011] Beneficial Effects

[0012] The utility model provides a rotary drying device for producing fused magnesia, which has the following beneficial effects: the device drives a paddle to paddle the raw materials in a cylinder body by rotating a rotating tube, thereby realizing tumbling of the raw materials; dry air can be sprayed out through the air outlet holes on the paddle plate when the raw materials are paddled, so that the dry air is in full contact with the raw materials; after the branch pipe is driven by the rotating tube to move to the opening, the dry air in the air supply pipe can enter the branch pipe through the opening, so that the dry air is discharged only when the paddle contacts the raw materials on one side below the cylinder body, thereby preventing part of the dry air from being directly discharged without contacting the raw materials, thereby improving the utilization rate of the dry air, reducing energy consumption, and improving the drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the main internal structure diagram of the utility model;

[0014] Figure 2 for Figure 1Sectional view of AA in the middle;

[0015] Figure 3 for Figure 1 A partial enlarged view of B.

[0016] In the figure: 1. Cylinder; 2. Air supply pipe; 3. Rotating pipe; 4. Branch pipe; 5. Paddle plate; 6. Air outlet; 7. Opening; 8. Pipe; 9. Heater; 10. Blower; 11. Driven pulley; 12. Motor; 13. Driving pulley; 14. Feed port; 15. Feed hopper; 16. Discharge port; 17. Discharge hopper; 18. Exhaust port. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0018] See also Figure 1-3 The utility model provides a technical solution: a rotary drying device for producing fused magnesia, comprising a cylinder 1, an air supply pipe 2 is fixedly arranged at the center of the cylinder 1, a rotating pipe 3 is rotatably arranged on the outer side of the air supply pipe 2, a plurality of pairs of branch pipes 4 are fixedly arranged on the outer wall of the rotating pipe 3, a paddle plate 5 is fixedly installed on each branch pipe 4, the paddle plate 5 abuts against the inner wall of the cylinder 1, the paddle plate 5 is a hollow structure and is connected to the branch pipe 4, a plurality of air outlet holes 6 are opened on the side wall of the paddle plate 5, an opening 7 is opened on the air supply pipe 2, the opening 7 faces the bottom of the cylinder 1 and deviates to one side of the rotation direction of the rotating pipe 3. When the rotating pipe 3 drives the branch pipe 4 to rotate to the bottom of the cylinder 1, the gas in the air supply pipe 2 can enter the branch pipe 4 through the opening 7, one end of the air supply pipe 2 extends to the outside of the cylinder 1 and is connected to a heater 9 and a blower 10 through a pipeline 8, a feed port 14 is opened on one side of the cylinder 1, a discharge port 16 is opened at the bottom of the other side of the cylinder 1, and the rotating pipe 3 is connected to a driving component.

[0019] As an embodiment of the utility model, the driving assembly includes a motor 12, which is fixed on the outer wall of the cylinder 1. One end of the rotating tube 3 extends to the outside of the cylinder 1 and is fixedly provided with a driven pulley 11. The driving end of the motor 12 is fixedly installed with a driving pulley 13, and a belt transmission is used between the driving pulley 13 and the driven pulley 11.

[0020] As an embodiment of the present utility model, a feed hopper 15 is fixedly disposed outside the feed port 14 , and a discharge hopper 17 is fixedly disposed outside the discharge port 16 .

[0021] As an embodiment of the present utility model, a plurality of exhaust ports 18 are provided above the cylinder 1 .

[0022] As an embodiment of the utility model, the angle between each pair of branch pipes 4 is 180 degrees, and two pairs of branch pipes 4 adjacent to each other along the axis direction of the rotating tube 3 are perpendicular to each other.

[0023] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and a suitable controller should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control.

[0024] The working principle and use process of the utility model are as follows: when in use, the raw materials enter the cylinder 1 through the feed hopper 15, and the dry air can be generated by starting the blower 10 and the heater 9. The dry air enters the air supply pipe 2 through the pipe 8, and the rotating tube 3 can be rotated by starting the motor 12. The rotating tube 3 is rotated to drive the paddle 5 to paddle the raw materials in the cylinder 1, so as to realize the tumbling of the raw materials in the cylinder 1. When the rotating tube 3 drives the branch pipe 4 to move to the opening 7, the dry air in the air supply pipe 2 can enter the branch pipe 4 through the opening 7, and then be discharged into the raw materials through the air outlet 6 on the paddle 5, so that the dry air is discharged only when the paddle 5 contacts the raw materials on the lower side of the cylinder 1, so as to avoid that part of the dry air is directly discharged without contacting the raw materials; the gas with moisture can be discharged through the exhaust port 18; the paddle 5 is installed at an angle, and the raw materials can be paddled toward the discharge port 16 by the paddle 5, and finally the raw materials are discharged through the discharge port 16 and the discharge hopper 17.

[0025] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary drying device for producing fused magnesia, characterized in that: The invention comprises a cylinder (1), wherein an air supply pipe (2) is fixedly arranged at the center of the cylinder (1), a rotating pipe (3) is rotatably arranged outside the air supply pipe (2), a plurality of pairs of branch pipes (4) are fixedly arranged on the outer wall surface of the rotating pipe (3), a paddle plate (5) is fixedly installed on each branch pipe (4), the paddle plate (5) is in contact with the inner wall surface of the cylinder (1), the paddle plate (5) is a hollow structure and is connected to the branch pipe (4), a plurality of air outlet holes (6) are provided on the side wall of the paddle plate (5), an opening (7) is provided on the air supply pipe (2), and the opening (7) faces The rotating tube (3) is offset to the bottom of the cylinder (1) and to one side of the rotation direction of the rotating tube (3). When the rotating tube (3) drives the branch tube (4) to rotate to the bottom of the cylinder (1), the gas in the air supply pipe (2) can enter the branch tube (4) through the opening (7). One end of the air supply pipe (2) extends to the outside of the cylinder (1) and is connected to a heater (9) and a blower (10) through a pipeline (8). A feed inlet (14) is provided on one side of the cylinder (1), and a discharge outlet (16) is provided at the bottom of the other side of the cylinder (1). The rotating tube (3) is connected to a drive assembly.

2. A rotary drying device for producing fused magnesia according to claim 1, characterized in that: The driving assembly comprises a motor (12), the motor (12) being fixed on the outer wall surface of the cylinder (1), one end of the rotating tube (3) extending to the outside of the cylinder (1) being fixedly provided with a driven pulley (11), a driving pulley (13) being fixedly installed on the driving end of the motor (12), and a belt transmission is used between the driving pulley (13) and the driven pulley (11).

3. A rotary drying device for producing fused magnesia according to claim 1, characterized in that: A feed hopper (15) is fixedly arranged on the outside of the feed port (14), and a discharge hopper (17) is fixedly arranged on the outside of the discharge port (16).

4. A rotary drying device for producing fused magnesia according to claim 1, characterized in that: A plurality of exhaust ports (18) are provided above the cylinder (1).

5. A rotary drying device for producing fused magnesia according to claim 1, characterized in that: The included angle between each pair of branch pipes (4) is 180 degrees, and two pairs of branch pipes (4) adjacent to each other along the axis direction of the rotating pipe (3) are perpendicular to each other.

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