Multi-tube rotary air inlet system of rotary kiln

Abstract

The utility model belongs to the field of rotary kiln coating equipment, and provides a rotary kiln multi-pipe rotary air inlet system which comprises a rotary furnace, a main air inlet pipe and rotary joints, a plurality of air inlet branch pipes are arranged on the inner wall of the rotary furnace and connected with the main air inlet pipe through the rotary joints, and the rotary joints comprise vacuum rotary joints and air supply rotary joints. The air inlet branch pipe is connected with the main air inlet pipe through the steel wire hose, the steel wire hose is connected with the air inlet branch pipe through the air supply rotary joint, and the air supply rotary joint and the steel wire hose are both arranged in the vacuum rotary joint. According to the utility model, the steel wire hose is matched with the air supply rotary joint and the vacuum rotary joint, and under the automatic control of the proportional valve group and the controller, the concentration of a coating material in the rotary furnace is concentrated at a required position, so that the powder material and the coating material are ensured to be in full contact, and meanwhile, dead angles are avoided; the powder material coating quality and efficiency are improved, the powder material coating time is shortened, mutual friction damage between particles is relieved or prevented, and meanwhile the problem that rotation of the rotary furnace is affected by the arrangement of the multiple air inlet branch pipes is solved.

Description

Technical Field

[0001] The utility model relates to the field of rotary kiln covering equipment, in particular to a multi-tube rotating air intake system of a rotary kiln. Background Art

[0002] As the application fields of nanomaterial metal powder become more and more extensive, the requirements for materials are also getting higher and higher, and the demand is also growing. Conventional nanomaterials are produced by atomization cooling, but for materials that need to be coated specially, it is impossible to achieve production in one go. The powder material and the coating material need to be coated again in a specific environment, resulting in low production efficiency, high energy consumption, and poor coating quality. In addition, during the long coating process, mutual friction and damage occur between the particles, causing the coating material on the surface of the powder material to fall off unevenly, affecting the use of the powder material. The existing coating equipment all places the powder material in a straight drum, and then passes the coating material straight in and out, resulting in long coating time, low efficiency, and poor coating quality. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and to provide a multi-tube rotary air intake system for a rotary kiln that improves the efficiency and quality of powder materials, reduces coating time, increases the contact area of ​​powder materials to be coated, avoids multiple pipes interfering with the rotation of the rotary kiln, and can automatically control the air intake to ensure coating efficiency.

[0004] The technical solution of the utility model is: a multi-tube rotary air intake system for a rotary kiln, comprising a rotary kiln, a main air intake pipe and a rotary joint, a plurality of air intake branch pipes are arranged on the inner wall of the rotary kiln, the air intake branch pipes are connected to the main air intake pipe through a rotary joint, the rotary joint comprises a vacuum rotary joint and an air supply rotary joint, the air intake branch pipes are connected to the main air intake pipe through a steel wire hose, the steel wire hose is connected to the air intake branch pipe through the air supply rotary joint, and the air supply rotary joint and the steel wire hose are both arranged in the vacuum rotary joint.

[0005] The advantage of the present invention is that, through the mutual cooperation of the steel wire hose, the air supply rotary joint and the vacuum rotary joint, it can ensure that the environment inside the rotary kiln is not affected, and can ensure that the rotation of the rotary kiln is not affected by multiple air intake pipes. The air intake of each air intake pipe can be controlled, and the coating material and the gas enter the rotary kiln together, and the air intake concentration in the rotary kiln can be concentrated at the required position, so that the powder material to be coated and the coating material are fully contacted, reducing the coating time and the time of mutual friction between the particles, and ensuring the coating quality of the material.

[0006] Furthermore, the steel hose is connected to the main air intake pipe via a connecting pipe, which is fixedly connected to the main air intake pipe via a thread or integrally formed, thereby improving the connection convenience of the steel hose and facilitating disassembly, maintenance, and replacement of the steel hose.

[0007] Furthermore, a proportional valve group is provided on the connecting pipe. The proportional valve group is controlled by a controller to adjust the air intake volume of each air intake branch. The proportional valve group is controlled by the controller to adjust the air intake volume of each air intake branch, ensuring that the air concentration is concentrated in the location inside the rotary kiln, thereby improving the coating effect of the powder material.

[0008] Furthermore, the air supply rotary joint is a linear air supply rotary joint and an L-shaped air supply rotary joint. Preferably, the L-shaped air supply rotary joint can improve the rotation effect of the steel wire hose.

[0009] Furthermore, both ends of the steel hose are provided with air supply swivel joints, and the length of the steel hose is not less than 20 cm. Preferably, the length of the steel hose is 50-200 cm; more preferably, the length of the steel hose is 80 cm, which ensures the rotational flexibility of the steel hose and also prevents the steel hose from becoming tangled due to rotation due to being too long.

[0010] Furthermore, the main air inlet pipe is sealedly connected to a mixing tank via a pipeline. The provision of the mixing tank facilitates the full mixing of the coating material and the carrier gas, thus ensuring the uniformity of the coating material supply.

[0011] Furthermore, vacuum rotary joints are provided at both ends of the rotary kiln to ensure that the rotary kiln can rotate under the drive of the driving device and that its internal environment is not damaged.

[0012] Furthermore, the rotary kiln is a sandwich structure, and a dispersion plate is provided on the inner wall of the rotary kiln, and a plurality of air inlet holes are provided on the dispersion plate.

[0013] Furthermore, at least three air inlet branch pipes are provided, and the air inlet branch pipes are circumferentially distributed in the interlayer structure of the rotary kiln and connected to the dispersion plate.

[0014] The utility model has the following characteristics: through the mutual cooperation of the steel wire hose and the air supply rotary joint and the vacuum rotary joint, and under the automatic control of the proportional valve group and the controller, the concentration of the coating material in the rotary kiln is concentrated at the required position, ensuring full contact between the powder material and the coating material, while avoiding the existence of dead angles, improving the coating quality and efficiency of the powder material, reducing the time used for powder material coating, reducing or preventing mutual friction damage between particles, and also avoiding the problem of the setting of multiple air inlet pipes affecting the rotation of the rotary kiln.

[0015] The detailed structure of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 - is a schematic diagram of the structure of this utility model;

[0017] Figure 2 - is another structural schematic diagram of the utility model;

[0018] 1-rotary kiln, 2-air inlet pipe, 3-vacuum rotary joint, 4-bracket, 5-steel hose, 6-main air inlet pipe, 7-mixing tank, 8-pipeline, 9-proportional valve group, 10-linear air supply rotary joint, 11-L-type air supply rotary joint. DETAILED DESCRIPTION

[0019] As shown in the accompanying drawings, a multi-tube rotary air intake system for a rotary kiln furnace comprises a rotary kiln 1, a main air intake pipe 6, and a rotary joint. The rotary kiln 1 is supported at both ends by brackets 4 and bearings, ensuring rotation driven by a drive motor. Several branch air intake pipes 2 are installed on the inner wall of the rotary kiln 1. These branch air intake pipes 2 are connected to the main air intake pipe 6 via rotary joints. These rotary joints include a vacuum rotary joint 3 and an air supply rotary joint. The branch air intake pipes 2 are connected to the main air intake pipe 6 via steel hoses 5, which are connected to the branch air intake pipe 2 via the air supply rotary joint. Both the air supply rotary joint and the steel hoses 5 are disposed within the vacuum rotary joint 3. Preferably, the steel hoses 5 are connected to the main air intake pipe 6 via connecting pipes, which are fixedly connected to the main air intake pipe 6 via threads or integrally formed. This improves the ease of connection of the steel hoses 5 and facilitates their removal, inspection, and replacement. More preferably, the connecting pipes are provided with proportional valve groups 9, which are controlled by a controller to adjust the air intake volume of each branch air intake pipe 2. The proportional valve group 9 is controlled by the controller to adjust the air intake of the air intake branch pipe 2 to ensure that the air intake concentration inside the rotary kiln 1 is concentrated, thereby improving the coating effect of the powder material.

[0020] In this embodiment, vacuum rotary joints 3 are installed at both ends of the rotary kiln 1 to ensure that the rotary kiln 1 can rotate under the drive of the drive device and protect its internal environment. Preferably, the rotary kiln 1 has a sandwich structure, and the inner wall of the rotary kiln 1 is provided with a dispersion plate, which is provided with a plurality of air inlet holes. More preferably, at least three air inlet manifolds 2 are provided, preferably 3-10 air inlet manifolds 2 are provided, and more preferably, in this embodiment, three air inlet manifolds 2 are provided. The air inlet manifolds 2 are distributed circumferentially within the sandwich structure of the rotary kiln 1 and are connected to the dispersion plate.

[0021] The utility model can ensure that the environment inside the rotary kiln 1 is not affected and that the rotation of the rotary kiln 1 is not affected by multiple air inlet pipes 2 through the mutual cooperation of the steel wire hose 5, the air supply rotary joint and the vacuum rotary joint 3. It can control the air intake of each air inlet pipe 2, so that the coating material and the gas enter the rotary kiln 1 together, and the air intake concentration in the rotary kiln 1 can be concentrated at the required position, so that the powder material to be coated and the coating material are fully contacted, the coating time and the time of mutual friction between the particles are reduced, and the coating quality of the material is guaranteed.

[0022] In the embodiment, the air supply rotary joint is a linear air supply rotary joint 10, which ensures the rotation and sealing performance of the air supply rotary joint.

[0023] In another embodiment, the air supply rotary joint is an L-shaped air supply rotary joint 11. The use of the L-shaped air supply rotary joint 11 can improve the rotation effect of the steel wire hose 5, facilitate the conversion of the lateral rotation force of the steel wire hose 5 into the longitudinal force, improve the rotation flexibility of the steel wire hose 5, and avoid entanglement and knotting.

[0024] In the embodiment, both ends of the steel hose 5 are provided with air supply rotary joints, and the length of the steel hose 5 is not less than 20 cm. Preferably, the length of the steel hose 5 is 50-200 cm; more preferably, in this embodiment, the length of the steel hose 5 is 100 cm, which ensures the rotational flexibility of the steel hose 5 and also prevents the steel hose 5 from becoming tangled due to rotation if it is too long.

[0025] The main air inlet pipe 6 is sealedly connected to the mixing tank 7 through the pipeline 8. The setting of the mixing tank 7 facilitates the coating material and the carrier gas to be fully mixed, thereby ensuring the uniformity of the coating material supply.

[0026] During use of the present invention, the ultrafine powder atomized by the mixing tank 7 and the plasma torch is fully mixed with the carrier gas, and the ultrafine powder, that is, the coating material, is transported to the rotary kiln 1 by the carrier gas and fully mixed with the powder to be coated in the rotary kiln 1. The controller controls the proportional valve group 9, and adjusts the air intake amount of each pipe 8 of the air intake branch 2, so that the ultrafine powder is concentratedly transported to the bottom, middle or upper part of the rotary kiln 1, or concentratedly transported to one of the air intake branches 2. The remaining air intake branches 2 are auxiliary conveying pipes, which ensure that the powder material can fully contact with the ultrafine powder to achieve coating, reduce the coating time of the powder material, and after coating is completed, the powder material is discharged from the other end of the rotary kiln 1 to achieve cyclic large-scale production.

[0027] The utility model makes the concentration of the coating material in the rotary kiln 1 concentrated at the desired position through the mutual cooperation of the steel wire hose 5, the air supply rotary joint and the vacuum rotary joint 3, and under the automatic control of the proportional valve group 9 and the controller, thereby ensuring sufficient contact between the powder material and the coating material, avoiding the existence of dead angles, improving the coating quality and efficiency of the powder material, reducing the time used for powder material coating, reducing or preventing mutual friction damage between particles, and also avoiding the problem that the setting of multiple air inlet pipes 2 affects the rotation of the rotary kiln 1.

[0028] The above is a preferred embodiment of the present invention and the technical principles used therein. For those skilled in the art, any obvious changes such as equivalent transformations, simple replacements, etc. based on the technical solution of the present invention, without departing from the spirit and scope of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A rotary kiln multi-tube rotary air intake system, comprising a rotary kiln, a main air intake pipe, and a rotary joint. A plurality of air intake branch pipes are provided on the inner wall of the rotary kiln, and the air intake branch pipes are connected to the main air intake pipe via a rotary joint. The system is characterized in that: The rotary joint includes a vacuum rotary joint and an air supply rotary joint. The air intake branch pipe is connected to the main air intake pipe through a steel wire hose. The steel wire hose is connected to the air intake branch pipe through the air supply rotary joint. The air supply rotary joint and the steel wire hose are both arranged in the vacuum rotary joint.

2. The multi-tube rotary air intake system for a rotary kiln according to claim 1, characterized in that: The steel wire hose is connected to the main air intake pipe through a connecting pipe, and the connecting pipe is fixedly connected to the main air intake pipe through a thread or is integrally formed.

3. The multi-tube rotary air intake system for a rotary kiln according to claim 2, characterized in that: The connecting pipe is provided with a proportional valve group, which is controlled by a controller to adjust the air intake volume of each air intake branch pipe.

4. The multi-tube rotary air intake system for a rotary kiln according to claim 1, characterized in that: The air supply rotary joint is a linear air supply rotary joint and an L-shaped air supply rotary joint.

5. The multi-tube rotary air intake system for a rotary kiln according to claim 1, characterized in that: Both ends of the steel wire hose are provided with air supply rotary joints, and the length of the steel wire hose is not less than 20 cm.

6. The multi-tube rotary air intake system for a rotary kiln according to claim 1, characterized in that: The main air inlet pipe is sealedly connected to the mixing tank through a pipeline.

7. The multi-tube rotary air intake system for a rotary kiln according to claim 1, characterized in that: Both ends of the rotary kiln are provided with vacuum rotary joints.

8. The multi-tube rotary air intake system for a rotary kiln according to claim 7, characterized in that: The rotary kiln is a sandwich structure, and a dispersion plate is provided on the inner wall of the rotary kiln, and a plurality of air inlet holes are provided on the dispersion plate.

9. The multi-tube rotary air intake system for a rotary kiln according to claim 1, characterized in that: At least three air inlet branch pipes are provided, and the air inlet branch pipes are circumferentially distributed in the interlayer structure of the rotary kiln and connected to the dispersion plate.

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