Full-automatic dipping coating equipment for high temperature protective coating of prebaked anode for aluminum

Abstract

The application discloses a kind of full-automatic dipping coating equipment for high-temperature protective coating of prebaked anode for aluminum, including single shear type lifting platform, dipping box, anode bottom palm baffle, single shear type lifting platform is fixedly installed on assembly workshop ground, single shear type lifting platform is fixedly installed dipping box on, overflow groove is equipped in the inside of dipping box, emptying valve is equipped in the bottom of dipping box;Compressed air interface is provided on the bottom side of dipping box, and the blowing pipeline is communicated with the inside of dipping box;Anode bottom palm baffle is at the bottom in the dipping box, and anode bottom palm baffle can move up and down on the dipping box;Slurry interface is provided above the dipping box.The application can cooperate with assembly workshop catenary system, and anode coating operation can be completed online, without manual intervention throughout, without additional work site.Anode full-automatic dipping coating does not need additional supporting dust collection system, and no coating waste is generated in the processing process.

Description

Technical Field

[0001] This invention relates to the field of aluminum electrolysis technology, and in particular to a fully automated impregnation and coating equipment for high-temperature protective coatings for prebaked anodes of aluminum. Background Technology

[0002] High-temperature protective coatings for prebaked anodes in aluminum electrolysis are used to prevent oxidation and resist high-temperature electrolyte corrosion of the anodes during the electrolytic aluminum production process. The application of these coatings can slow down anode wear in the cell, extend anode lifespan, reduce carbon slag formation in the electrolytic cell, improve the current efficiency of the electrolytic cell, and reduce and purify electrolytic flue gas emissions, bringing significant benefits to electrolytic aluminum production in multiple aspects. Several research groups both domestically and internationally have studied these coatings and proposed various formulations and preparation processes, achieving good results in their application.

[0003] The coating process that matches the preparation of coatings has also developed rapidly, from single spraying to layer spraying, and then to two-phase independent spraying. The spraying construction method has also changed from manual spraying to automatic spraying. With the development of industrial automation and intelligent technology, the application of automatic spraying lines has become more and more widespread. However, during the spraying process, a large number of paint droplets will be suspended in the area around the sprayed object. According to the requirements of the operation safety specifications, additional dust collection equipment is required. The working environment is relatively harsh, and the power consumption is high, resulting in a large amount of waste. Summary of the Invention

[0004] The purpose of this invention is to provide a fully automatic impregnation and coating equipment for high-temperature protective coatings for prebaked anodes of aluminum. It has the advantages of good coating effect and no need for external ventilation and dust collection equipment, and avoids the disadvantages of existing spraying methods such as dust generation and large waste in the coating process.

[0005] This invention is implemented as follows: A fully automatic impregnation and coating equipment for prebaked anode high-temperature protective coatings for aluminum includes a single-scissor lifting platform, an impregnation tank, and an anode bottom baffle. The single-scissor lifting platform is fixedly installed on the assembly workshop floor. The impregnation tank is fixedly installed on the single-scissor lifting platform. An overflow trough is provided inside the impregnation tank, and a drain valve is provided at the bottom of the impregnation tank, connected to a discharge pipe at the bottom of the overflow trough. A compressed air interface is provided on the side of the bottom of the impregnation tank, connected to a spray pipe, which is connected to the interior of the impregnation tank. The anode bottom baffle is located at the bottom of the impregnation tank. Spring telescopic rods are provided at the four corners of the upper part of the impregnation tank, with the bottom of the spring telescopic rods connected to the corresponding corners of the anode bottom baffle. The anode bottom baffle can move up and down within the impregnation tank. A slurry interface is provided above the impregnation tank.

[0006] The blowing pipeline is located at the bottom of the impregnation tank. There is one or more nozzles on the blowing pipeline, which are evenly distributed on the bottom of the impregnation tank. The nozzles are horizontally positioned and equipped with one-way valves.

[0007] The jetting pipeline is arranged horizontally, and its height from the bottom of the inner wall of the impregnation tank is no more than 100mm.

[0008] Thanks to the above technical solutions, this invention can be integrated with the overhead conveyor system in the assembly workshop to complete the anodizing process online, requiring no manual intervention or additional work area. The fully automated anodizing immersion coating requires no additional dust collection system, and no paint waste is generated during the process. Attached Figure Description

[0009] Appendix Figure 1 This is a schematic diagram of the equipment structure of the present invention;

[0010] Appendix Figure 2 This is a schematic front view of the equipment structure of the present invention;

[0011] Appendix Figure 3 This is a schematic side view of the equipment structure of the present invention;

[0012] Appendix Figure 4 This is a top view illustrating the structure of the equipment of the present invention.

[0013] The markings in the diagram are: 1—Single scissor lifting platform; 2—Immersion tank; 3—Overflow tank; 4—Drain valve; 5—Compressed air interface; 6—Pulse jetting pipeline; 7—Slurry interface; 8—Anode bottom baffle; 9—Spring telescopic rod. Detailed Implementation

[0014] An embodiment of the present invention: A fully automatic impregnation and coating equipment for prebaked anode high-temperature protective coating of aluminum includes a single-scissor lifting platform 1, an impregnation tank 2, and an anode bottom baffle 8. The single-scissor lifting platform 1 is fixedly installed on the assembly workshop floor. The impregnation tank 2 is fixedly installed on the single-scissor lifting platform 1. An overflow trough 3 is provided inside the impregnation tank 2. An air vent valve 4 is provided at the bottom of the impregnation tank 2, and the air vent valve 4 is connected to the discharge pipe at the bottom of the overflow trough 3. A compressed air interface 5 is provided on the bottom side of the impregnation tank 2, and the compressed air interface 5 is connected to a spray pipe 6. The spray pipe 6 is located at... At the bottom of the impregnation tank 2, there is one or more nozzles on the spray pipe 6, which are evenly distributed on the bottom of the impregnation tank 2. The nozzles are horizontally arranged and equipped with one-way valves. The spray pipe 6 is arranged horizontally and the height from the bottom of the inner wall of the impregnation tank 2 is no more than 100mm. The anode bottom baffle 8 is located at the bottom of the impregnation tank 2. Spring telescopic rods 9 are provided at the four corners of the upper part of the impregnation tank 2. The bottom of the spring telescopic rods 9 is connected to the corresponding corner of the anode bottom baffle 8. The anode bottom baffle 8 can move up and down in the impregnation tank 2. A slurry interface 7 is provided above the impregnation tank 2.

[0015] The start and stop of the single scissor lifting platform 1 is interlocked with the anode positioning signal on the overhead conveyor system. When the overhead conveyor system sends the positioning signal, the single scissor lifting platform 1 moves upward until it reaches the highest position, which ensures that the anode to be sprayed is completely immersed in the paint slurry in the impregnation tank 2.

[0016] The slurry interface 7 is softly connected to the external slurry pumping system to ensure that the immersion coating equipment can move up and down without obstruction. The slurry interface 7 is equipped with a corresponding liquid level switch, which is interlocked with the slurry pumping system to control the start and stop of the slurry pump.

[0017] Compressed air interface 5 is flexibly connected to an external compressed air pipeline. Air is sent into the jetting pipeline 6 through compressed air interface 5. The jetting pipeline 6 delivers air into the impregnation tank 2 through the nozzle, ensuring that the slurry is continuously jetted and flows when there is slurry in the impregnation tank 2. The one-way valves installed at each nozzle can prevent the slurry from flowing back.

[0018] The spring telescopic rod 9 is used to control the raising and lowering of the anode bottom plate baffle 8. When the immersion coating equipment rises, the anode bottom plate baffle 8 first contacts the anode bottom plate to be coated on the overhead conveyor system. Then the immersion coating equipment continues to rise. At this time, the anode bottom plate baffle 8 moves downward while the spring telescopic rod 9 is in a stretched state until the anode completes the entire coating process. During this process, the anode bottom plate baffle 8 is closely attached to the anode bottom plate to prevent the slurry from adhering to the anode bottom plate.

[0019] First, the anode positioning signal of the overhead conveyor system is issued, and the single-scissor lifting platform 1 moves upward. The entire equipment begins to move upward, and the anode bottom baffle 8 first contacts the anode bottom. The spring telescopic rods 9, which are connected to the anode bottom baffle 8 and the four corners of the impregnation tank 2, begin to extend, and the equipment continues to move upward. The anode enters the coating slurry in the impregnation tank 2, and the anode impregnation coating begins. The equipment moves upward until the anode to be coated is completely submerged in the coating slurry. At this time, any excess slurry in the impregnation tank 2 flows back to the external slurry pumping system through the overflow tank 3. The impregnation coating is then completed. The single-scissor lifting platform 1 begins to move downwards, and the entire impregnation and coating equipment begins to descend. At this time, the spring telescopic rod 9 begins to retract, and the anode bottom baffle 8 is tightly attached to the anode bottom. The equipment continues to descend. When the anode is completely separated from the slurry, the anode bottom baffle 8 gradually disengages from the anode bottom, and the spring telescopic rod 9 retracts to its final position. The equipment continues to descend until it resets. A reset signal for the impregnation and coating equipment is issued, the upper stop of the overhead conveyor system is released, and the impregnation and coating anode continues to move forward. The entire automatic impregnation and coating operation is completed. The process repeats until the next anode is in place. Throughout the process, the compressed air interface 5 and the blowing pipeline 6 are connected to the external compressed air network and operate continuously. The slurry interface 7 is connected to the external slurry pumping system. When the impregnation and coating equipment resets, the slurry pump is started and stopped by the level switch set on the slurry interface 7, thereby replenishing the slurry in the impregnation tank 2.

[0020] In this embodiment, the manufacturing dimensions of the immersion tank 2 are related to the anode dimensions. The internal clearance length and width of the immersion tank 2 are 100-160mm longer than the length and width of the entire anode assembly, and the internal clearance height of the immersion tank 2 is more than 300mm higher than the required immersion height of the anode coating area.

[0021] The rated load of the single scissor lifting platform 1 exceeds the total weight of the upper immersion device and the coating in the immersion tank. The platform size is not less than the length and width of the immersion tank. The upward stroke ensures that the anode coating area can be completely immersed in the coating.

[0022] The upper edge of the overflow tank 3 is level with the upper edge of the anode coating area to ensure that the coating in the immersion tank can completely immerse the anode coating area.

[0023] The drain valve 4 is installed horizontally, and the installation height ensures that the paint in the impregnation tank 2 is basically emptied.

[0024] The dimensions of the anode bottom baffle 8 are related to the dimensions of the anode. The length and width of the anode bottom baffle 8 are both 80-120mm smaller than the length and width of the entire anode assembly.

[0025] The length of the spring telescopic rod 8 is adjustable, which can ensure that the anode coating area can be completely immersed in the coating, while also ensuring that the anode bottom baffle 8 is not immersed in the coating when unloaded.

Claims

1. A fully automatic impregnation and coating equipment for prebaked anode high-temperature protective coating of aluminum, comprising a single-scissor lifting platform (1), an impregnation tank (2), and an anode bottom baffle (8), characterized in that: A single scissor lift platform (1) is fixedly installed on the floor of the assembly workshop. An impregnation tank (2) is fixedly installed on the single scissor lift platform (1). An overflow trough (3) is provided inside the impregnation tank (2). An air vent valve (4) is provided at the bottom of the impregnation tank (2). The air vent valve (4) is connected to the discharge pipe at the bottom of the overflow trough (3). A compressed air interface (5) is provided on the side of the bottom of the impregnation tank (2). The compressed air interface (5) is connected to the blowing pipe (6). The blowing pipe (6) is connected to the inside of the impregnation tank (2). The anode bottom baffle (8) is located at the bottom of the impregnation tank (2). Spring telescopic rods (9) are provided at the four corners of the upper part of the impregnation tank (2). The bottom of the spring telescopic rods (9) is connected to the corresponding corner of the anode bottom baffle (8). The anode bottom baffle (8) can move up and down in the impregnation tank (2). A slurry interface (7) is provided above the impregnation tank (2). When the anode positioning signal of the catenary system is issued, the single scissor lift platform (1) moves upward, and the entire equipment begins to move upward. The anode bottom baffle (8) first contacts the anode bottom, and the spring telescopic rods (9) connected to the anode bottom baffle (8) and the four corners of the immersion tank (2) begin to stretch. The equipment continues to move upward, and the anode enters the paint slurry in the immersion tank (2). The anode immersion coating begins, and the equipment moves upward until the anode to be coated is completely submerged in the paint slurry. After the immersion coating is completed, the single scissor lift platform (1) begins to move downward, and the entire immersion coating equipment begins to descend. At this time, the spring telescopic rod (9) begins to retract, and the anode bottom baffle (8) adheres tightly to the anode bottom. The equipment continues to descend. When the anode is completely removed from the slurry, the anode bottom baffle (8) gradually separates from the anode bottom, and at the same time, the spring telescopic rod (9) retracts to the position. The equipment continues to descend until it returns to its original position.

2. The fully automatic impregnation and coating equipment for prebaked anode high-temperature protective coating of aluminum according to claim 1, characterized in that: The blowing pipe (6) is located at the bottom of the impregnation tank (2). There is one or more nozzles on the blowing pipe (6) and they are evenly distributed at the bottom of the impregnation tank (2). The nozzles are horizontally set and equipped with one-way valves.

3. The fully automated impregnation and coating equipment for prebaked anode high-temperature protective coating of aluminum according to claim 1 or 2, characterized in that: The jetting pipeline (6) is arranged horizontally, and its height from the bottom of the inner wall of the impregnation tank (2) is no more than 100mm.

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