Aluminum melt purification powder spraying vehicle

Abstract

The invention relates to an aluminum melt purification powder spraying vehicle in the technical field of smelting equipment. The aluminum melt purification powder spraying vehicle comprises a transfer trolley, a powder storage tank and a powder spraying assembly, the transfer trolley is a trackless flat car and is used for driving the powder storage tank and the powder spraying assembly to move, the powder spraying assembly comprises a telescopic rotating mechanism and a powder spraying pipe, and the powder spraying pipe is connected with a powder outlet pipe of the powder storage tank; the powder storage tank is fixed on the transfer trolley; the telescopic rotating mechanism is connected with the powder spraying pipe and used for driving the powder spraying pipe to horizontally move and rotate, the powder spraying pipe does not need to be manually rotated, the labor intensity is reduced, meanwhile, the requirements for reducing the opening degree and reducing the heat loss of the furnace when the powder spraying pipe enters and exits from the furnace door can be met, and the requirement for the refining agent spraying uniformity is met. The transfer trolley can drive equipment to flexibly move in a smelting workshop, lifting is convenient, the requirement for the manufacturing and installing process is low, and cost is low; the powder spraying pipe can stretch, swing and rotate; the service life is long, the manual labor intensity is low, and the working efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of smelting equipment, and particularly relates to an aluminum melt purification powder spraying vehicle. BACKGROUND

[0002] In the aluminum alloy casting industry, in order to obtain high-quality aluminum liquid, high-temperature aluminum liquid must be subjected to slag removal and degassing process treatment, in which the gas is mainly hydrogen, and the impurities are mainly oxidized slag, alkali metals, etc. The slag removal and degassing process of molten aluminum is realized by sending granular or powdery refining agent into a smelting furnace or a holding furnace through an inert gas as a carrier. Specifically, a powder spraying device is generally used to deliver the refining agent, which is then introduced into the smelting furnace through the rotating shaft of a stirring device, while the rotor stirs the aluminum liquid. Alternatively, powder pipes are arranged at different positions to blow the refining agent into the furnace, so that the refining agent is fully mixed with the aluminum liquid. Due to the harsh environment of the production site, there is high temperature and dust, and the above-mentioned methods have the following problems: (1) The powder spraying device needs to be laid with a special guide rail or the equipment needs to be installed with a track to reciprocate at a fixed position in the smelting workshop, which is complicated to install and inconvenient to operate. (2) The existing equipment uses a servo motor to drive a screw rod to cooperate with a linear guide rail for lifting control, which has high requirements for processing and manufacturing and installation process, and relatively high cost. (3) The powder spraying pipe needs to rotate during use, and the existing technology is a manual rotary type, which is heavy and inconvenient to operate. (4) The contact part of the powder spraying pipe with the aluminum liquid is easily damaged at high temperature, and it is invalid after 2-3 furnace times, so it needs to be replaced frequently and has a short service life. The labor intensity of workers is high during work, which is not conducive to manual operation and seriously affects the production efficiency. Therefore, there is an urgent need for an aluminum melt purification powder spraying vehicle to solve the above technical problems. SUMMARY

[0003] The present application aims at the deficiencies in the prior art, and provides an aluminum melt purification powder spraying vehicle, which comprises a transfer trolley and a powder storage tank and a powder spraying assembly arranged on the transfer trolley. The transfer trolley is a trackless flat car for driving the powder storage tank and the powder spraying assembly to move. The trackless flat car does not need to be laid with a special track, and the transfer trolley can drive the powder storage tank and the powder spraying pipe to move flexibly in the smelting workshop, which is simple and efficient to operate. The powder spraying assembly comprises a telescopic rotating mechanism and a powder spraying pipe, and the powder spraying pipe is connected with the powder outlet pipe of the powder storage tank. The powder storage tank is fixed on the transfer trolley. The telescopic rotating mechanism is connected with the powder spraying pipe for driving the powder spraying pipe to move horizontally and rotate by itself, without the need for manual rotation of the powder spraying pipe, which reduces the labor intensity and improves the work efficiency. At the same time, it can meet the requirement of reducing the opening degree of the furnace door when the powder spraying pipe enters and exits the furnace door, reduce the heat loss of the furnace, and the powder spraying pipe can extend and retract in the furnace to meet the requirement of uniformity of the refining agent spraying.

[0004] Preferably, the telescopic rotation mechanism includes a housing, a telescopic arm, a telescopic motor, a tilting motor, gear one, gear two, gear three, and a rack; the housing has an inlet and an outlet at both ends along its length; the telescopic arm is slidably connected to the housing; the powder spraying pipe is rotatably mounted on the telescopic arm via bearings; the telescopic arm and the powder spraying pipe extend from the outlet and inlet respectively; the powder spraying pipe can rotate on the telescopic arm along its central axis; the tilting motor is fixed on the telescopic arm located outside the outlet; the output shaft of the tilting motor is connected to gear one; gear two is fixed on the powder spraying pipe extending out of the outlet; gear one meshes with gear two; the powder spraying pipe is connected to a powder storage tank via a connecting hose; the powder spraying pipe and the connecting hose are connected via a rotary joint; the rack is fixed on the telescopic arm; gear three meshes with the rack; gear three is connected to the telescopic motor; the housing of the telescopic motor is fixedly connected to the housing; both the telescopic motor and the tilting motor can rotate in both directions. Specifically, the telescopic motor drives gear three to rotate in both directions. Gear three drives the rack and pinion to move the powder spraying pipe and telescopic arm along the length of the outer shell, enabling them to extend and retract within the shell. The tilting motor drives gear one to rotate, and gear one drives gear two to rotate the powder spraying pipe (e.g., allowing for a 180-degree tilting motion). This configuration allows for a reduced opening when the powder spraying pipe enters or exits the furnace door, minimizing furnace heat loss. Simultaneously, the telescopic movement of the powder spraying pipe within the furnace improves the uniformity of refining agent spraying.

[0005] Preferably, the connecting hose is a flexible transparent hose with steel wire reinforcement. The outer shell is provided with a flexible motion cable chain and a guide groove that cooperates with the flexible motion cable chain. The connecting hose is set on the flexible motion cable chain. When the powder spraying pipe extends or retracts, the connecting hose moves synchronously with the flexible motion cable chain, which can prevent the connecting hose from falling to the ground, effectively protect the connecting hose, and avoid problems such as wear and tear and unsightly appearance.

[0006] Preferably, the telescopic rotation mechanism further includes multiple sets of guide components. These guide components are used to limit and guide the telescopic arm. The multiple sets of guide components are disposed within the housing and evenly distributed along the length of the housing. Each guide component includes a cooperating upper guide wheel and a lower guide wheel, which roll in contact with the upper and lower surfaces of the telescopic arm, respectively. The centers of both the upper and lower guide wheels are rotatably connected to a rotating shaft via bearings, with one end of the rotating shaft fixed to the inner wall of the housing. When the telescopic arm drives the powder spraying pipe to move horizontally along the length of the housing, the upper and lower guide wheels limit the telescopic arm, preventing the powder spraying pipe from shifting during movement and improving the stability of the powder spraying pipe during extension and retraction.

[0007] Preferably, the powder spraying pipe includes a horizontal pipe and an inclined pipe. The inclined pipe is located at the powder spraying end of the powder spraying pipe and is detachably connected to the horizontal pipe via a connecting flange. The angle formed between the inclined pipe and the horizontal pipe is an obtuse angle. The horizontal pipe is a metal pipe, and the inclined pipe is a high-temperature resistant metal pipe or a graphite pipe. The connection between the horizontal pipe and the inclined pipe is sealed with a soft graphite gasket. Only the inclined pipe extends into the furnace and comes into contact with the high-temperature molten aluminum. The inclined pipe and the horizontal pipe are easy to disassemble, and the inclined pipe is both high-temperature resistant and has a certain strength, increasing its service life and reducing the frequency of inclined pipe replacement.

[0008] Preferably, the powder spraying assembly is mounted on the transfer trolley in a height-adjustable manner via a lifting assembly, the lifting assembly being used to adjust the height of the powder spraying assembly.

[0009] Preferably, the lifting assembly is a scissor lift platform, which includes a mounting base and a lifting platform. The transfer trolley is provided with a mounting slot, and the mounting base is fixed in the mounting slot. A bellows-style protective cover is provided between the mounting base and the lifting platform. A cooling fan is provided on the lifting platform to dissipate heat from the bellows-style protective cover. A vertical low-position limit post and a displacement sensor can also be provided on the mounting base. The scissor lift platform, in conjunction with the displacement sensor, can be stopped at the desired position at any time.

[0010] While meeting actual functional requirements, scissor lift platforms are relatively economical in price. They mainly use scissor supports and hydraulic cylinders to drive the lifting platform, eliminating the need for high-precision servo motors, lead screws, and linear guides. This allows for effective lifting control. In addition, the addition of a bellows-style protective cover made of high-temperature resistant and flame-retardant material and a cooling fan for exhaust cooling can effectively protect the equipment from the adverse effects of high-temperature radiation and dust.

[0011] Preferably, the powder spraying assembly is connected to the lifting platform via a slewing bearing. The slewing bearing has a toothed ring that meshes with a worm gear. The worm gear is connected to a stepper motor, which drives the slewing bearing to rotate the powder spraying assembly.

[0012] A stepper motor drives a worm gear to rotate, which in turn drives a slewing bearing to rotate a telescopic rotating mechanism, enabling it to perform 90-degree reciprocating rotational motion.

[0013] Preferably, the transfer trolley is equipped with a second mounting slot, and the powder storage tank is installed in the second mounting slot. A distribution plate is installed inside the powder outlet pipe of the powder storage tank. The distribution plate controls the powder output of the powder outlet pipe. The distribution plate is connected to a variable frequency motor, and the powder outlet pipe is connected to an air inlet pipe. Inert gas is introduced through the air inlet pipe to deliver the material in the powder outlet pipe. Specifically, a variable frequency motor drives the distribution plate to rotate, bringing the granular or powdered refining agent from the powder storage tank into the outlet pipe. Inert compressed gas at a certain pressure is introduced through the air inlet pipe to transport the refining agent in the outlet pipe to the refining furnace through a powder spraying pipe. The variable frequency drive controls the speed of the variable frequency motor, and the speed of the variable frequency motor controls the output amount.

[0014] Preferably, the tires of the trackless flatcar are solid tires with steel metal wheels coated with polyurethane wear-resistant rubber, and the transfer trolley is equipped with a battery pack and an openable maintenance door.

[0015] This invention also includes other components that enable the aluminum melt purification powder spraying vehicle to function normally, such as control components for telescopic motors, tilting motors, stepper motors, and variable frequency motors; control components for transfer trolleys; control components for displacement sensors; control components for cooling fans; and control components for scissor lift platforms. These are all conventional technologies and equipment in the field. Furthermore, devices or components not limited in this invention, such as trackless flatcars, racks, displacement sensors, slewing bearings, guide wheels, material distribution trays, battery packs, worm gears, cooling fans, scissor lift platforms, and flexible motion cable chains, all employ conventional technologies and equipment in the field.

[0016] Working Principle: A trackless flatcar controls the movement of the equipment between the charging station and each furnace. A scissor lift platform controls the equipment's lifting; a stepper motor drives a slewing bearing to control the equipment's swing; a telescopic motor controls the extension and retraction of the powder spraying pipe and telescopic arm along the length of the outer casing; a tilting motor controls the rotation of the powder spraying pipe; an accordion-style protective cover and a cooling fan provide ventilation and cooling, effectively protecting the equipment from the adverse effects of high-temperature radiation and dust; the connecting hose moves synchronously with a flexible motion cable chain, preventing the connecting hose from touching the ground, effectively protecting the connecting hose, and is both aesthetically pleasing and practical.

[0017] This invention offers the following advantages: No dedicated tracks are required; the trackless flatcar allows for flexible movement of the powder storage tank and powder spraying pipe within the smelting workshop. The connecting hose between the powder spraying pipe and the powder storage tank moves synchronously with the flexible motion cable chain, preventing the connecting hose from touching the ground, effectively protecting it, and avoiding wear and unsightly issues. Lifting and lowering are convenient, with low manufacturing and installation requirements and costs. The powder spraying pipe can extend, swing, and rotate, meeting the requirement of reduced furnace door opening when entering and exiting, minimizing furnace heat loss. Simultaneously, the extension and retraction of the spraying pipe within the furnace ensures uniform refining agent spraying. The equipment has a long service life, and the tilting pipe requires less frequent replacement. This reduces manual labor intensity and improves work efficiency. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the aluminum melt purification and powder spraying vehicle in an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the transfer trolley; Figure 3 for Figure 1 Schematic diagram of a scissor lift platform; Figure 4 for Figure 1 Schematic diagram of the structure at the slewing bearing; Figure 5 for Figure 4 Top view; Figure 6 for Figure 1 Schematic diagram of the structure at the powder spraying pipe; Figure 7 for Figure 6 A bottom view; Figure 8 for Figure 1 A schematic diagram of the structure at the junction of the powder spraying pipe and the flexible motion cable chain; Figure 9 for Figure 6 A three-dimensional image; Figure 10 for Figure 1 A schematic diagram of the structure of the medium-sized powder storage tank.

[0020] In the diagram: 1. Transfer trolley; 2. Powder storage tank; 3. Guide trough; 4. Bellows-style protective cover; 5. Outer shell; 6. Inclined pipe; 7. Mounting slot two; 8. Mounting slot one; 9. Battery pack; 10. Maintenance door; 11. Cooling fan; 12. Lifting platform; 13. Mounting base; 14. Horizontal pipe; 15. Low-position limit post; 16. Flexible motion cable chain; 17. Variable frequency motor; 18. Air inlet pipe; 19. Powder outlet pipe; 20. Tilting motor; 21. Worm gear; 22. Transition flange; 23. Slewing bearing; 24. Stepper motor; 25. Connecting flange two; 26. Connecting flange one; 27. Telescopic arm; 28. Rack; 29. ​​Upper guide wheel; 30. Telescopic motor; 31. Lower guide wheel; 32. Connecting hose. Detailed Implementation

[0021] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely illustrative and is not intended to limit the scope of the invention. Any modifications, equivalent substitutions, or improvements made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the scope of protection of the present invention.

[0022] Example 1 like Figures 1-5 As shown in Figures 7 and 10, the present invention provides an aluminum melt purification powder spraying vehicle, including a transfer trolley 1 and a powder storage tank 2 and a powder spraying assembly mounted on the transfer trolley 1; the transfer trolley 1 is a trackless flatcar used to move the powder storage tank 2 and the powder spraying assembly. The trackless flatcar eliminates the need for laying special tracks, and the transfer trolley 1 can move the powder storage tank 2 and the powder spraying pipe flexibly in the smelting workshop, making the operation simple and efficient. The powder spraying assembly includes a telescopic rotating mechanism and a powder spraying pipe. The powder spraying pipe is connected to the powder outlet pipe 19 of the powder storage tank 2. The powder storage tank 2 is fixed on the transfer trolley 1. The telescopic rotating mechanism is connected to the powder spraying pipe and is used to drive the powder spraying pipe to move horizontally and rotate. There is no need to manually rotate the powder spraying pipe, which reduces labor intensity and improves work efficiency. At the same time, it can meet the requirement of reducing the opening of the powder spraying pipe when entering and exiting the furnace door, thus reducing the heat loss of the furnace. Meanwhile, the telescopic movement of the powder spraying pipe in the furnace meets the requirement of uniformity of refining agent spraying.

[0023] The telescopic rotation mechanism includes a housing 5, a telescopic arm 27, a telescopic motor 30, a tilting motor 20, gear one, gear two, gear three, and a rack 28. The housing 5 has an inlet and an outlet at both ends along its length. The telescopic arm 27 is slidably connected to the housing 5. The powder spraying pipe is rotatably mounted on the telescopic arm 27 via bearings. The telescopic arm 27 and the powder spraying pipe extend from the outlet and inlet respectively. The powder spraying pipe can rotate along its central axis on the telescopic arm 27. The tilting motor 20 is fixed to the telescopic arm 27 located outside the outlet. The output shaft of the flip motor 20 is connected to gear one, gear two is fixed on the powder spraying pipe extending out of the outlet, gear one meshes with gear two, the powder spraying pipe is connected to the powder storage tank 2 through the connecting hose 32, and the powder spraying pipe and the connecting hose 32 are connected by a rotary joint; the rack 28 is fixed on the telescopic arm 27, gear three meshes with the rack 28, gear three is connected to the telescopic motor 30, the housing of the telescopic motor 30 is fixedly connected to the outer shell 5, and both the telescopic motor 30 and the flip motor 20 can rotate in both directions; The telescopic motor 30 drives gear three to rotate in both directions. Gear three drives rack 28 to move the powder spraying pipe and telescopic arm 27 along the length of the outer shell 5, realizing their extension and retraction within the outer shell 5. The flipping motor 20 drives gear one to rotate, and gear one drives gear two to rotate the powder spraying pipe (e.g., it can perform a 180-degree flipping motion). This setting can meet the requirement of reducing the opening of the powder spraying pipe when entering and exiting the furnace door, reducing furnace heat loss, and at the same time, the extension and retraction movement of the powder spraying pipe within the furnace improves the uniformity of refining agent spraying.

[0024] The powder spraying pipe includes a horizontal pipe 14 and an inclined pipe 6. The inclined pipe 6 is located at the powder spraying end of the powder spraying pipe. The inclined pipe 6 is detachably connected to the horizontal pipe 14 via a connecting flange 26. The included angle between the inclined pipe 6 and the horizontal pipe 14 is an obtuse angle. The horizontal pipe 14 is a metal pipe (made of high-temperature resistant stainless steel 310S), and the inclined pipe 6 is made of high-temperature resistant metal pipe or graphite pipe. The connection between the horizontal pipe 14 and the inclined pipe 6 is sealed with a soft graphite gasket. Only the inclined pipe 6 extends into the furnace and comes into contact with the high-temperature molten aluminum. The inclined pipe 6 and the horizontal pipe 14 are easy to disassemble, and the inclined pipe 6 is both high-temperature resistant and has a certain strength, increasing its service life and reducing the frequency of replacement.

[0025] The powder coating assembly is mounted on the transfer trolley 1 via a scissor lift platform, which is used to adjust the height of the powder coating assembly. The scissor lift platform includes a mounting base 13 and a lifting platform 12. The transfer trolley 1 is provided with a mounting groove 8. The mounting base 13 is fixed in the mounting groove 8. A bellows-type protective cover 4 is provided between the mounting base 13 and the lifting platform 12. A cooling fan 11 is provided on the lifting platform 12. The cooling fan 11 is used to dissipate heat inside the bellows-type protective cover 4.

[0026] While meeting actual functional requirements, scissor lift platforms are relatively economical in price. They mainly use scissor supports and hydraulic cylinders to drive the lifting platform 12, eliminating the need for high-precision servo motors, lead screws, and linear guides. This effectively controls lifting and lowering. In addition, the high-temperature resistant and flame-retardant bellows-style protective cover 4 and cooling fan 11 provide ventilation and cooling, effectively protecting the equipment from the adverse effects of high-temperature radiation and dust.

[0027] The transfer trolley 1 is equipped with an installation slot 2 7, and the powder storage tank 2 is installed in the installation slot 2 7. A distribution plate is installed in the powder outlet pipe 19 of the powder storage tank 2. The distribution plate controls the powder output of the powder outlet pipe 19. The distribution plate is connected to a variable frequency motor 17, and the powder outlet pipe 19 is connected to an air inlet pipe 18. Inert gas is introduced through the air inlet pipe 18 to deliver the material in the powder outlet pipe 19. Specifically, the variable frequency motor 17 drives the distribution plate to rotate, bringing the granular or powdered refining agent in the powder storage tank 2 into the outlet pipe. Inert compressed gas at a certain pressure is introduced through the air inlet pipe 18 to transport the refining agent in the outlet pipe to the refining furnace through a powder spraying pipe. The variable frequency drive controls the speed of the variable frequency motor 17, and the speed of the variable frequency motor 17 controls the output amount.

[0028] The tires of the trackless flatcar are solid tires with steel metal wheels and an external polyurethane wear-resistant rubber coating. The transfer trolley 1 is equipped with a battery pack 9 and an openable maintenance door 10.

[0029] Example 2 like Figures 1-7 As shown in Figure 10, the difference between this embodiment and Embodiment 1 is that the telescopic rotation mechanism further includes multiple sets of guide components. These guide components are used to limit and guide the telescopic arm 27. The multiple sets of guide components are disposed within the housing 5 and evenly distributed along the length of the housing 5. Each guide component includes a cooperating upper guide wheel 29 and a lower guide wheel 31. The upper guide wheel 29 and the lower guide wheel 31 are in rolling contact with the upper and lower surfaces of the telescopic arm 27, respectively. The centers of both the upper guide wheel 29 and the lower guide wheel 31 are rotatably connected to a rotating shaft via bearings. One end of the rotating shaft is fixed to the inner wall of the housing 5. When the telescopic arm 27 drives the powder spraying pipe to move horizontally along the length of the housing 5, the upper guide wheel 29 and the lower guide wheel 31 limit the telescopic arm 27, preventing the powder spraying pipe from deviating during movement and improving the stability of the powder spraying pipe during telescopic movement.

[0030] Example 3 like Figures 1-7 As shown in Figure 10, the difference between this embodiment and Embodiment 1 is that the mounting base 13 is equipped with a vertical low-position limit post 15 and a displacement sensor. With the displacement sensor, the scissor lift platform can be stopped at the desired position at any time during lifting.

[0031] Example 4 like Figures 1-10As shown, the difference between this embodiment and embodiment 1 is that the connecting hose 32 is a flexible transparent hose with steel wire, and the outer shell 5 is provided with a flexible motion drag chain 16 and a guide groove 3 that cooperates with the flexible motion drag chain 16. The connecting hose 32 is set on the flexible motion drag chain 16. When the powder spraying pipe extends or retracts, the connecting hose 32 moves synchronously with the flexible motion drag chain 16, which can prevent the connecting hose 32 from falling to the ground, effectively protect the connecting hose 32, and avoid wear and unsightly problems.

[0032] Example 5 like Figures 1-5 As shown in Figures 7 and 10, the difference between this embodiment and Embodiment 1 is that the powder spraying assembly is connected to the lifting platform 12 via a slewing bearing 23. The bottom of the slewing bearing 23 is connected to the lifting platform 12 via a transition flange 22, and the top of the slewing bearing 23 is connected to the outer shell 5 of the powder spraying assembly via a connecting flange 25. The toothed ring of the slewing bearing 23 is engaged with a worm gear 21, and the worm gear 21 is connected to a stepper motor 24. The stepper motor 24 is used to drive the slewing bearing 23 to rotate the powder spraying assembly.

[0033] Stepper motor 24 drives worm gear 21 to rotate, and worm gear 21 drives slewing bearing 23 to rotate telescopic rotating mechanism, which can perform 90-degree reciprocating rotation.

[0034] In the above embodiments, a refining agent is sprayed into the furnace in front of the furnace using an aluminum melt purification powder spraying vehicle in conjunction with manual assistance, so that the aluminum liquid can be effectively refined. Through pre-furnace refining, oxides and inclusions can be removed, and the impurity content in the metal can be reduced, thereby improving the purity and quality of the aluminum material. In the embodiments, the transfer trolley is equipped with a controller, and the telescopic motor, tilting motor, stepper motor, frequency conversion motor, transfer trolley, displacement sensor, cooling fan, scissor lift platform, etc. are all connected to the controller (PLC). The operation is controlled by the controller. The lifting, rotation, telescopic, and self-rotation of the powder spraying pipe are all controlled by the PLC programming, which can realize the execution of various refining actions of the powder spraying pipe in furnaces of different specifications. Moreover, the above components all adopt conventional equipment and methods in the field, without modification, and can be used with reference to the instruction manual.

[0035] The embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An aluminum melt purification powder spraying cart, comprising a transfer trolley and a powder storage tank and powder spraying assembly mounted on the transfer trolley; characterized in that: The transfer trolley is a trackless flatcar used to move the powder storage tank and powder spraying assembly. The powder spraying assembly includes a telescopic rotation mechanism and a powder spraying pipe. The powder spraying pipe is connected to the powder outlet pipe of the powder storage tank. The powder storage tank is fixed on a transfer trolley. The telescopic rotation mechanism is connected to the powder spraying pipe and is used to drive the powder spraying pipe to move horizontally and rotate.

2. The aluminum melt purification and powder spraying vehicle according to claim 1, characterized in that: The telescopic rotating mechanism includes a housing, a telescopic arm, a telescopic motor, a tilting motor, gear one, gear two, gear three, and a rack. The housing has an inlet and an outlet at both ends along its length. The telescopic arm is slidably connected to the housing. The powder spraying pipe is rotatably mounted on the telescopic arm via bearings. Both ends of the telescopic arm and the powder spraying pipe extend from the outlet and inlet, respectively. The tilting motor is fixed to the telescopic arm located outside the outlet. The output shaft of the tilting motor is connected to gear one. Gear two is fixed to the powder spraying pipe extending from the outlet. Gear one meshes with gear two. The powder spraying pipe is connected to a powder storage tank via a connecting hose. The powder spraying pipe and the connecting hose are connected via a rotary joint. The rack is fixed to the telescopic arm. Gear three meshes with the rack and is connected to the telescopic motor. The housing of the telescopic motor is fixedly connected to the housing. The telescopic motor drives gear three to rotate in both directions. Gear three drives the rack to move the powder spraying pipe and telescopic arm back and forth along the length of the outer shell. The flipping motor drives gear one to rotate. Gear one drives gear two to rotate the powder spraying pipe.

3. The aluminum melt purification and powder spraying vehicle according to claim 2, characterized in that: The connecting hose is a flexible transparent hose with steel wire. The outer shell is provided with a flexible motion drag chain and a guide groove that cooperates with the flexible motion drag chain. The connecting hose is set on the flexible motion drag chain, which is used to drive the connecting hose to move synchronously when the powder spraying pipe extends or retracts.

4. The aluminum melt purification and powder spraying vehicle according to claim 2, characterized in that: The telescopic rotation mechanism also includes multiple sets of guide components, which are used to limit and guide the telescopic arm. The multiple sets of guide components are arranged inside the housing and evenly distributed along the length of the housing. Each guide component includes an upper guide wheel and a lower guide wheel that cooperate with each other. The upper guide wheel and the lower guide wheel make rolling contact with the upper surface and the lower surface of the telescopic arm, respectively.

5. The aluminum melt purification and powder spraying vehicle according to claim 1, characterized in that: The powder spraying pipe includes a horizontal pipe and an inclined pipe. The horizontal pipe is a metal pipe, and the inclined pipe is a high-temperature resistant metal pipe. The inclined pipe is located at the powder spraying end of the powder spraying pipe and is detachably connected to the horizontal pipe through a connecting flange.

6. The aluminum melt purification and powder spraying vehicle according to claim 1, characterized in that: The powder spraying assembly is mounted on the transfer trolley in a height-adjustable manner via a lifting assembly, which is used to adjust the height of the powder spraying assembly.

7. The aluminum melt purification and powder spraying vehicle according to claim 6, characterized in that: The lifting assembly is a scissor lift platform, which includes a mounting base and a lifting platform. The transfer trolley is provided with a mounting slot, and the mounting base is fixed in the mounting slot. An accordion-style protective cover is provided between the mounting base and the lifting platform. A cooling fan is provided on the lifting platform to dissipate heat from the inside of the accordion-style protective cover.

8. The aluminum melt purification powder spraying vehicle according to claim 7, characterized in that: The powder spraying assembly is connected to the lifting platform via a slewing bearing. The slewing bearing has a toothed ring meshing with a worm gear, which is connected to a stepper motor. The stepper motor drives the slewing bearing to rotate the powder spraying assembly.

9. The aluminum melt purification and powder spraying vehicle according to claim 1, characterized in that: The powder storage tank has a distribution plate inside the powder outlet pipe. The distribution plate is used to control the powder output of the powder outlet pipe. The distribution plate is connected to a variable frequency motor. The powder outlet pipe is connected to an air inlet pipe. The air inlet pipe introduces inert gas to send the material out of the powder outlet pipe.

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