An aluminum electrolysis feeder jet repair equipment based on cold spraying technology

Abstract

The application discloses a kind of based on cold spraying technology's aluminum electrolysis discharger jet repair equipment, it is related to the field of spray gun, including positioning device, the spray gun of positioning device execution end is equipped, and the powder supply device of output end is connected spray gun input end by pipeline, spray gun includes the first laval nozzle of positioning device execution end is equipped, and the feed laval nozzle of first laval nozzle input end is equipped, feed laval nozzle input end is connected with the powder supply device output end;It further includes the acceleration airflow supply component of the outer wall of feed laval nozzle is sleeved and output end extends to the inside of first laval nozzle;It further includes two negative pressure recovery pipes symmetrically arranged on the outer wall of first laval nozzle, and the turnover cover plate component arranged on the outer wall of first laval nozzle.The core advantage of the present application is reflected in the efficient stability of spraying process and the rapid switching of powder raw materials.

Description

A spray repair device for aluminum electrolysis feeders based on cold spraying technology Technical Field

[0001] This invention mainly relates to the technical field of spray guns, specifically a spray repair device for aluminum electrolysis feeders based on cold spraying technology. Background Technology

[0002] Cold spraying, as a solid particle deposition technology, can effectively avoid material oxidation, phase transformation and thermal stress because its spraying temperature is much lower than the melting point of powder. It is particularly suitable for the repair of heat-sensitive workpieces such as aluminum electrolytic feeders.

[0003] However, existing cold spray repair equipment still has significant shortcomings when applied to such complex working conditions. Firstly, to address the repair needs of different parts of the feeder, multiple functional powders such as NiAl, Ni-based superalloys, and cermets are often required. Existing powder feeding systems are mostly single-hopper systems or have cumbersome powder changing processes, failing to achieve rapid and precise switching between multiple materials and easily causing powder cross-contamination, severely affecting the interface quality and performance of multi-layer coatings. Secondly, undeposited rebound powder during spraying causes raw material waste and environmental pollution, and existing equipment lacks efficient integrated waste recycling and pipeline self-cleaning functions. Within the technical framework of existing spraying devices, the comprehensive challenges of multi-material switching and conveying, as well as closed-loop pipeline cleaning, have not yet been systematically solved.

[0004] In summary, existing technologies are insufficient to meet the demands for efficient, high-quality, and high-material-utilization online repair of aluminum electrolysis feeders. Therefore, there is an urgent need to develop a cold spray repair device. This device must be capable of: rapidly and pollution-free switching between various repair powders to adapt to composite coating processes; and enabling immediate recycling of spraying waste and thorough self-cleaning of pipelines during powder changes, thus forming a closed-loop management system for raw materials. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a spray repair device for aluminum electrolysis feeders based on cold spraying technology, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a spray repair device for an aluminum electrolysis feeder based on cold spraying technology, comprising a positioning device, a spray gun disposed at the execution end of the positioning device, and a powder supply device whose output end is connected to the input end of the spray gun via a pipe. The spray gun includes a first Laval nozzle disposed at the execution end of the positioning device and a feeding Laval nozzle disposed at the input end of the first Laval nozzle, the input end of the feeding Laval nozzle being connected to the output end of the powder supply device; it also includes an accelerating airflow supply component sleeved on the outer wall of the feeding Laval nozzle and whose output end extends into the first Laval nozzle; it further includes two negative pressure recovery pipes symmetrically disposed on the outer wall of the first Laval nozzle, and a flip-top cover component disposed on the outer wall of the first Laval nozzle; the flip-top cover component is close to the output end of the first Laval nozzle, and the flip-top cover component is used to connect the output end of the first Laval nozzle with the input end of the negative pressure recovery pipe after closing the first Laval nozzle.

[0007] Preferably, the accelerating airflow supply component includes a flow-splitting ring sleeved on the outer wall of the first Laval nozzle, multiple first air source pipes connected to the flow-splitting ring at their output ends, multiple straight pipes connected to the flow-splitting ring at their input ends and arranged in a ring array, and a second Laval pipe connected at one end to the straight pipes and extending into the first Laval nozzle at the other end. In this preferred embodiment, multiple surrounding Laval pipes are used to uniformly inject high-speed airflow, thereby enhancing the kinetic energy of the powder.

[0008] Preferably, the system further includes a flow distribution component, which comprises an electrically controlled valve and a flow sensor mounted on the straight pipe; the electrically controlled valve and the flow sensor are sequentially arranged along the airflow direction. In this preferred embodiment, an independent branch monitoring and adjustment structure is adopted to ensure uniform airflow and a stable spraying process.

[0009] Preferably, the flip-top cover component includes a bearing seat disposed on the outer wall of the first Laval nozzle, a rotating rod rotatably connected to the bearing seat, a cover connected to the rotating rod via an extension plate, and a micro motor disposed on the outer wall of the negative pressure recovery pipe for driving the rotating rod to rotate; the cover has multiple sealing protrusions inside. In this preferred embodiment, the motor automatically flips and closes, and the sealing protrusions ensure a seal during cleaning mode.

[0010] Preferably, the device further includes an electromagnetic fixing assembly disposed on the outer wall of the cover. The electromagnetic fixing assembly includes an iron protrusion disposed on the outer wall of the cover and an electromagnetic block disposed on the outer wall of the first Laval nozzle, corresponding to the position of the iron protrusion. In this preferred embodiment, electromagnetic attraction provides a strong locking force, resisting airflow and ensuring the effectiveness of the self-cleaning process.

[0011] Preferably, the powder supply device includes a base plate, a supply pipe and a pressing and selecting component fixed on the base plate, a plurality of positioning pipes sequentially disposed on the outer wall of the supply pipe and communicating with the supply pipe, a quantitative supply component with its output end extending into the positioning pipe, and an elastic support component disposed on the outer wall of the positioning pipe; the elastic support component is used to elastically support the quantitative supply component, and the inlet of the supply pipe is connected to a second air source pipe, and the outlet is connected to a supply Laval nozzle through a pipe. In this preferred embodiment, the modular multi-bin design allows for rapid switching between different repair materials, improving efficiency.

[0012] Preferably, the quantitative feeding component includes a feeding pipe whose outer wall is slidably connected to the inner wall of the positioning tube, a support frame disposed at the top of the feeding pipe, a drive motor disposed at the top of the support frame, a detection shaft disposed at the actuating end of the drive motor and extending into the feeding pipe, and a conveying auger disposed at the end of the detection shaft; it also includes a first gear disposed on the outer wall of the detection shaft, an encoder disposed on the outer wall of the feeding pipe, and a second gear disposed at the detection end of the encoder and meshing with the first gear; and a powder raw material pipe whose outlet is connected to the feeding pipe. In this preferred embodiment, the auger feeding combined with encoder feedback achieves high-precision control of the powder feeding amount.

[0013] Preferably, the elastic support component includes multiple elongated through holes in the positioning tube, multiple extension blocks on the outer wall of the feeding tube, the extension blocks penetrating the elongated through holes; it also includes a first limiting plate on the outer wall of the feeding tube, a second limiting plate on the outer wall of the positioning tube, and a spring sleeved on the outer wall of the positioning tube and located between the first and second limiting plates; the pressing selection component includes a first linear module on the base plate, an L-shaped rod on the actuating end of the first linear module, and an electric cylinder on the top of the L-shaped rod with its actuating end penetrating the L-shaped rod. In this preferred embodiment, the spring reset and the electric cylinder pressing cooperate to achieve automated material selection and powder changing.

[0014] Preferably, the positioning device includes an outer wall spraying positioning component, a horizontal plate disposed at the execution end of the outer wall spraying positioning component, and an inner wall spraying positioning component disposed at the top of the horizontal plate. The outer wall spraying positioning component includes a turntable, a power motor located on one side of the turntable for driving the turntable to rotate, a second linear module disposed on the turntable, a movable frame disposed at the execution end of the second linear module, and a telescopic cylinder disposed at the top of the movable frame with its execution end penetrating through the movable frame. The execution end of the telescopic cylinder is connected to the bottom of the horizontal plate. In this preferred embodiment, the turntable's rotation and linear adjustment achieve precise spraying of the outer wall curved surface.

[0015] Preferably, the inner wall spraying positioning component includes a shaft rotatably connected to the top of the horizontal plate at its bottom, a mounting block disposed at the top of the shaft, a worm gear sleeved on the outer wall of the shaft, a stepper motor disposed on the horizontal plate, and a worm located at the actuating end of the stepper motor and meshing with the worm gear; the mounting block is connected to the first Laval nozzle. In this preferred embodiment, the worm gear drives rotation, self-locking and stabilizing, achieving uniform circumferential spraying of the inner cavity.

[0016] In summary, the present invention has the following main beneficial effects:

[0017] The present invention provides an aluminum electrolysis feeder spray repair device based on cold spraying technology, which proposes a highly integrated and intelligent comprehensive solution to address the process challenges of feeders being easily damaged in high-temperature, corrosive and erosion environments, and the need for frequent and precise switching of multiple functional powders for repair.

[0018] The core advantages of this equipment lie in its highly efficient and stable spraying process and precise and flexible material management. Firstly, the spray gun employs a multi-path, surrounding second Laval tube structure, uniformly injecting high-speed, accelerated airflow into the main nozzle. Combined with an independently monitored and controlled flow distribution component, this ensures an extremely stable flow field, providing a reliable power foundation for obtaining a coating with high bonding strength and uniform thickness. Secondly, addressing the needs of multi-layer composite repair, the powder supply device adopts a modular multi-bin design. Each bin is equipped with a precision metering powder delivery unit consisting of an auger and encoder. Coupled with a fully automatic downward selection and reset mechanism, this achieves second-level rapid switching between different materials and high-precision quantitative delivery, eliminating cross-contamination and significantly improving repair efficiency and material consistency under complex processes.

[0019] In addition, the equipment integrates a closed-loop management function of real-time waste recycling and pipeline self-cleaning. During spraying, the symmetrically arranged negative pressure recovery pipes can collect rebounded powder in real time; when changing powder, the flip-up cover plate seals the nozzle under the drive of the motor and electromagnetic locking device, so that the residual powder is completely extracted by the negative pressure system under the action of continuous airflow, realizing automated cleaning of the pipeline.

[0020] Meanwhile, the positioning device is divided into outer and inner wall spraying modules. Through circumferential scanning driven by a turntable, linear adjustment, and worm gear, it achieves comprehensive and stable coverage of the inner and outer curved surfaces and complex parts of the workpiece. Attached Figure Description

[0021] Figure 1 is an isometric view of the overall structure of the repair device of the present invention;

[0022] Figure 2 is an exploded view of the overall structure of the repair device of the present invention;

[0023] Figure 3 is an exploded view of the spray gun structure of the present invention;

[0024] Figure 4 is an enlarged view of the structure at point A in Figure 3 of this invention;

[0025] Figure 5 is an exploded view of the positioning device structure of the present invention;

[0026] Figure 6 is an exploded view of the powder supply device of the present invention.

[0027] Figure 7 is a top view of the overall structure of the repair device of the present invention;

[0028] Figure 8 is a cross-sectional view of the overall structure of the repair device of the present invention;

[0029] Figure 9 is an enlarged view of the structure at point B in Figure 8 of this invention;

[0030] Figure 10 is an enlarged view of the structure at point C in Figure 8 of this invention.

[0031] Figure Descriptions: 10. Positioning device; 11. Pipe outer wall spraying positioning component; 111. Turntable; 112. Power motor; 113. Second linear module; 114. Moving frame; 115. Telescopic cylinder; 12. Horizontal plate; 13. Pipe inner wall spraying positioning component; 131. Shaft; 132. Mounting block; 133. Worm gear; 134. Stepper motor; 135. Worm; 20. Spray gun; 21. First Laval nozzle; 22. Feeding Laval nozzle; 23. Accelerating airflow supply component; 231. Diverter ring; 232. First air source pipe; 233. Straight pipe; 234. Second Laval pipe; 24. Negative pressure recovery pipe; 25. Flip cover component; 251. Bearing seat; 252. Rotating rod; 253. Extension plate; 254. Cover; 2541. Sealing protrusion; 255. Micro motor; 2 56. Electromagnetic fixing assembly; 2561. Iron protrusion; 2562. Electromagnetic block; 26. Flow distribution component; 261. Electrically controlled valve; 262. Flow sensor; 30. Powder supply device; 31. Base plate; 32. Feeding pipe; 33. Pressing and selecting component; 331. First linear module; 332. L-shaped rod; 333. Electric cylinder; 34. Positioning pipe; 35. Quantitative feeding component; 351. Feeding pipe; 352. Support frame; 353. Drive motor; 354. Detection shaft; 355. Conveying auger; 356. First gear; 357. Encoder; 358. Second gear; 359. Powder raw material pipe; 36. Elastic support component; 361. Long through hole; 362. Extension block; 363. First limiting plate; 364. Second limiting plate; 365. Spring; 37. Second air source pipe. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0033] The embodiments of the present invention will now be described.

[0034] Referring specifically to Figures 1, 2, 3, 4, 7, 8, and 9, in a preferred embodiment of the present invention, an aluminum electrolysis feeder spray repair device based on cold spraying technology includes a positioning device 10, a spray gun 20 disposed at the execution end of the positioning device 10, and a powder supply device 30 whose output end is connected to the input end of the spray gun 20 via a pipe. The spray gun 20 includes a first Laval nozzle 21 disposed at the execution end of the positioning device 10, and a feeding Laval nozzle 22 disposed at the input end of the first Laval nozzle 21. The input end of the feeding Laval nozzle 22 is connected to the output end of the powder supply device 30. It also includes an accelerating airflow supply component 23 sleeved on the outer wall of the feeding Laval nozzle 22 and with its output end extending into the first Laval nozzle 21; it also includes two negative pressure recovery pipes 24 symmetrically arranged on the outer wall of the first Laval nozzle 21, and a flip-top cover component 25 arranged on the outer wall of the first Laval nozzle 21; the flip-top cover component 25 is close to the output end of the first Laval nozzle 21, and the flip-top cover component 25 is used to connect the output end of the first Laval nozzle 21 with the input end of the negative pressure recovery pipe 24 after closing the first Laval nozzle 21; the accelerating airflow supply component 23 includes a component sleeved on the outer wall of the first Laval nozzle 21. The system includes a flow distribution ring 231, an output end connected to multiple first air source pipes 232 of the flow distribution ring 231, an input end connected to the flow distribution ring 231 and arranged in a ring array of multiple straight pipes 233, and a second Laval pipe 234 connected at one end to the straight pipes 233 and extending at the other end into the first Laval nozzle 21. It also includes a flow distribution component 26, which includes an electrically controlled valve 261 and a flow sensor 262 mounted on the straight pipes 233. The electrically controlled valve 261 and the flow sensor 262 are sequentially arranged along the airflow direction. The flip-top cover component 25 includes components mounted on the first Laval nozzle 21. The outer wall has a bearing seat 251, a rotating rod 252 rotatably connected to the bearing seat 251, a cover 254 connected to the rotating rod 252 via an extension plate 253, and a micro motor 255 located on the outer wall of the negative pressure recovery pipe 24 for driving the rotating rod 252 to rotate; the cover 254 has multiple sealing protrusions 2541 inside, and also includes an electromagnetic fixing assembly 256 located on the outer wall of the cover 254. The electromagnetic fixing assembly 256 includes an iron protrusion 2561 located on the outer wall of the cover 254, and an electromagnetic block 2562 located on the outer wall of the first Laval nozzle 21 and corresponding to the position of the iron protrusion 2561.

[0035] It should be noted that, in this preferred embodiment, the core function of the aluminum electrolysis feeder is to accurately and reliably add production raw materials to the electrolytic cell, including alumina, fluoride salts, and crushed electrolytes, etc.

[0036] The ambient temperature around the electrolytic cell is high, and the temperature of the melt inside the cell is close to 1000℃. The end of the aluminum electrolytic feeder tube is close to or extends into the high-temperature area, and is subjected to continuous heat radiation and periodic thermal shock, which can easily cause damage.

[0037] Hydrogen fluoride gas is generated during the production process, which reacts with water to form hydrofluoric acid, causing severe chemical corrosion to metal parts.

[0038] The material powder conveyed by the feeder has high hardness and sharp edges, which causes erosion and wear on the inner wall of the aluminum electrolysis feeder tube under the drive of high-speed airflow.

[0039] When repairing the discharge port of the feeder:

[0040] Base layer: a material with high bonding strength and good thermal compatibility with the substrate, such as NiAl; Intermediate layer: a layer resistant to high-temperature oxidation and corrosion, such as Ni-based high-temperature alloys; Top layer: ultra-high-temperature ceramics or cermets;

[0041] For repairing the inner wall of the feeder: a wear-resistant layer and an anti-corrosion layer are used;

[0042] Therefore, cold spraying repair of aluminum electrolysis feeders requires different powder materials, and the powder materials need to be changed frequently during the repair process;

[0043] The repair device is set up at the online repair station. When the aluminum electrolytic feeder needs to be repaired, the gantry crane moves the aluminum electrolytic feeder to the online repair station, and the positioning device 10 moves the spray gun 20 to the part to be repaired in order to repair the unloading end or inner wall of the aluminum electrolytic feeder.

[0044] During repair, the powder supply device 30 delivers a quantitative amount of powder material to the first Laval nozzle 21 via airflow. The accelerated airflow supply component 23 supplies accelerated airflow to the first Laval nozzle 21. The accelerated airflow drives the powder material to move and is accelerated again by the first Laval nozzle 21 before being ejected. The powder material adheres to the part of the aluminum electrolytic feeder to be repaired, thereby achieving repair.

[0045] During the repair process, negative pressure suction is performed through the negative pressure recovery pipe 24 connected to the negative pressure system to recover the powder raw materials that failed to adhere and rebounded.

[0046] When changing raw materials, the flip cover component 25 flips up, closes the first Laval nozzle 21, and connects the output end of the first Laval nozzle 21 with the input end of the negative pressure recovery pipe 24. The pressing selection component 33 stops working, and the air source system connected to the second air source pipe 37 continues to supply airflow. The powder raw materials remaining in the feeding pipe 32, the feeding Laval nozzle 22 and the first Laval nozzle 21 are discharged through the negative pressure recovery pipe 24 to complete self-cleaning. After self-cleaning, the pressing selection component 33 presses down the quantitative feeding component 35 corresponding to the required powder raw materials to complete the replacement of powder raw materials.

[0047] Furthermore, when the accelerated airflow supply component 23 is working, the inert gas supply system connected to the first gas source pipe 232 supplies inert gas with a set flow rate and a set temperature. The airflow enters the first Laval nozzle 21 after passing through the first gas source pipe 232, the split ring 231, the straight pipe 233 and the second Laval pipe 234. The second Laval pipe 234 can accelerate the airflow.

[0048] During the process of accelerating the airflow supply, the controller receives the flow information values ​​measured by multiple flow sensors 262, analyzes them, and triggers the electronic control valve 261 to keep the flow information values ​​within the set range, so as to ensure that the output flow difference of multiple second Laval nozzles 234 is within the set range and improve the airflow stability in the first Laval nozzle 21.

[0049] Furthermore, when the flip cover component 25 is working, the micro motor 255 drives the rotating rod 252 to rotate, the rotating rod 252 drives the cover 254 to rotate and seal the end of the first Laval nozzle 21. At the same time, the electromagnetic block 2562 generates magnetic force after being energized, and the magnetic force connects the iron protrusion 2561 to increase the stability of the cover 254 after sealing.

[0050] After the cap 254 is sealed, the sealing protrusion 2541 seals the gap between the two negative pressure recovery pipes 24. After the cap 254 is sealed, the airflow discharged from the first Laval nozzle 21 enters the interior of the cap 254, and the negative pressure recovery pipe 24 sucks the interior of the cap 254 to achieve the recovery of powder raw materials during self-cleaning.

[0051] Referring specifically to Figures 1, 2, 6, 7, 8, and 10, in another preferred embodiment of the present invention, the powder supply device 30 includes a base plate 31, a supply pipe 32 fixed to the base plate 31, a pressing and selecting component 33, a plurality of positioning pipes 34 sequentially disposed on the outer wall of the supply pipe 32 and communicating with the supply pipe 32, a quantitative supply component 35 with its output end extending into the positioning pipe 34, and an elastic support component 36 disposed on the outer wall of the positioning pipe 34; the elastic support component 36 is used for elastic support. The metering feeding component 35 includes a feeding pipe 32 with its inlet connected to a second air source pipe 37 and its outlet connected to a feeding Laval nozzle 22 via a pipe. The metering feeding component 35 includes a feeding pipe 351 whose outer wall is slidably connected to the inner wall of the positioning pipe 34; a support frame 352 located at the top of the feeding pipe 351; a drive motor 353 located at the top of the support frame 352; a detection shaft 354 located at the actuating end of the drive motor 353 and extending into the feeding pipe 351; and a conveying auger 355 located at the end of the detection shaft 354. It also includes a first gear 356 disposed on the outer wall of the detection shaft 354, an encoder 357 disposed on the outer wall of the feed tube 351, and a second gear 358 disposed on the detection end of the encoder 357 and meshing with the first gear 356; it also includes a powder raw material tube 359 with an outlet communicating with the feed tube 351, the elastic support member 36 including a plurality of elongated through holes 361 passing through the positioning tube 34, and a plurality of extension blocks 362 disposed on the outer wall of the feed tube 351, the extension blocks 362 passing through the elongated through holes 361; and also includes The first limiting plate 363 is disposed on the outer wall of the feeding tube 351, the second limiting plate 364 is disposed on the outer wall of the positioning tube 34, and the spring 365 is sleeved on the outer wall of the positioning tube 34 and located between the first limiting plate 363 and the second limiting plate 364; the pressing selection component 33 includes a first linear module 331 disposed on the base plate 31, an L-shaped rod 332 disposed on the execution end of the first linear module 331, and an electric cylinder 333 disposed on the top of the L-shaped rod 332 and whose execution end passes through the L-shaped rod 332.

[0052] It should be noted that, in this preferred embodiment, when the powder supply device 30 is working, the pressing selection component 33 presses down the corresponding quantitative feeding component 35, and the unloading end of the quantitative feeding component 35 extends into the feeding pipe 32, so that the raw material can be conveyed. After the pressing selection component 33 cancels the pressing down, the elastic support component 36 drives the unloading pipe 351 to reset.

[0053] Furthermore, when the pressing and selecting component 33 is working, the actuator of the first linear module 331 drives the L-shaped rod 332 and the electric cylinder 333 to move, and the actuator of the electric cylinder 333 extends to press down the quantitative feeding component 35.

[0054] Furthermore, when the quantitative feeding component 35 is working, the powder raw material pipe 359 is connected to the powder raw material storage tank. The bottom of the powder raw material storage tank is higher than the feeding pipe 351. Due to gravity, the powder raw material enters the feeding pipe 351 through the powder raw material pipe 359. During quantitative feeding, the actuator of the drive motor 353 drives the detection shaft 354 and the conveying auger 355 to rotate to add powder raw material. Since the amount of powder raw material conveyed by the conveying auger 355 is fixed in one rotation, when the conveying auger 355 rotates, the first gear 356 drives the detection end of the encoder 357 to rotate through the second gear 358. The controller receives the rotation angle information measured by the encoder 357 and adjusts the output power of the drive motor 353 after analysis to adjust the amount of powder added.

[0055] The bottom of the feeding pipe 351 can also be connected to the base plate through multiple extensions. After the feeding pipe 351 is reset, the base plate can seal the feeding pipe 351.

[0056] Furthermore, when the elastic support component 36 is working, as the feed tube 351 moves up and down within the positioning tube 34, the extension block 362 slides within the long through hole 361, and the spring 365 can provide support force to the first limiting plate 363. Under the action of the support force, the first limiting plate 363 drives the feed tube 351 to move upward.

[0057] Referring specifically to Figures 1, 2, 5, 7, and 8, in another preferred embodiment of the present invention, the positioning device 10 includes a pipe outer wall spraying positioning component 11, a horizontal plate 12 disposed at the execution end of the pipe outer wall spraying positioning component 11, and a pipe inner wall spraying positioning component 13 disposed at the top of the horizontal plate 12; the pipe outer wall spraying positioning component 11 includes a turntable 111, a power motor 112 located on one side of the turntable 111 and used to drive the turntable 111 to rotate, a second linear module 113 disposed on the turntable 111, a moving frame 114 disposed at the execution end of the second linear module 113, and A telescopic cylinder 115 is located on the top of the movable frame 114 and its actuating end passes through the movable frame 114; the actuating end of the telescopic cylinder 115 is connected to the bottom of the horizontal plate 12; the inner wall spraying positioning component 13 includes a shaft 131 rotatably connected to the top of the horizontal plate 12 at its bottom, a mounting block 132 located on the top of the shaft 131, a worm gear 133 sleeved on the outer wall of the shaft 131, a stepper motor 134 located on the horizontal plate 12, and a worm 135 located at the actuating end of the stepper motor 134 and meshing with the worm gear 133; the mounting block 132 is connected to the first Laval nozzle 21.

[0058] It should be noted that, in this preferred embodiment, when the outer wall of the tube is sprayed and positioned, the power motor 112 drives the turntable 111 to rotate, thereby driving the spray gun 20 to move around the outer wall of the aluminum electrolytic feeder tube. The second linear module 113 drives the spray gun 20 to move, thereby adjusting the distance between the spray gun 20 and the outer wall of the aluminum electrolytic feeder tube. The telescopic cylinder 115 can drive the spray gun 20 to rise and fall.

[0059] Furthermore, the aluminum electrolysis feeder tube moves under the drive of the gantry crane until the spray gun 20 is located at the center of the aluminum electrolysis feeder tube.

[0060] When the inner wall spraying positioning component 13 is working, the stepper motor 134 drives the worm gear 135 to rotate. The worm gear 135 drives the shaft 131 to rotate through the worm wheel 133, thereby driving the mounting block 132 and the spray gun 20 to rotate. The telescopic cylinder 115 can drive the spray gun 20 to rise and fall, so as to position the spray gun 20 when spraying the inner wall of the aluminum electrolysis feeder tube.

[0061] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A spray repair device for an aluminum electrolytic feeder based on cold spraying technology, comprising a positioning device (10), a spray gun (20) disposed at the execution end of the positioning device (10), and a powder supply device (30) whose output end is connected to the input end of the spray gun (20) via a pipe, characterized in that, The spray gun (20) includes a first Laval nozzle (21) disposed at the actuating end of the positioning device (10), and a feeding Laval nozzle (22) disposed at the input end of the first Laval nozzle (21), the input end of the feeding Laval nozzle (22) being connected to the output end of the powder supply device (30); it also includes an accelerating airflow supply component (23) sleeved on the outer wall of the feeding Laval nozzle (22) and whose output end extends into the first Laval nozzle (21); and it also includes components symmetrically disposed on the first Laval nozzle (21). The first Laval nozzle (21) has two negative pressure recovery pipes (24) on its outer wall, and a flip-top cover component (25) on its outer wall. The flip-top cover component (25) is located near the output end of the first Laval nozzle (21), and is used to connect the output end of the first Laval nozzle (21) with the input end of the negative pressure recovery pipes (24) after closing the first Laval nozzle (21). The accelerating airflow supply component (23) includes a sleeve fitted on the first Laval nozzle (21). 1) A flow divider ring (231) on the outer wall, with an output end connected to a plurality of first air source pipes (232) of the flow divider ring (231), an input end connected to the flow divider ring (231) and a plurality of straight pipes (233) arranged in a ring array, and a second Laval pipe (234) with one end connected to the straight pipe (233) and the other end extending into the first Laval nozzle (21); the powder supply device (30) includes a base plate (31), a feed pipe (32) fixed on the base plate (31) and a downward pressure Select component (33), a plurality of positioning tubes (34) arranged sequentially on the outer wall of the feeding tube (32) and connected to the feeding tube (32), a quantitative feeding component (35) with the output end extending into the positioning tube (34), and an elastic support component (36) arranged on the outer wall of the positioning tube (34); the elastic support component (36) is used to elastically support the quantitative feeding component (35), the inlet of the feeding tube (32) is connected to the second air source tube (37), and the outlet is connected to the feeding Laval nozzle (22) through a pipe.

2. The aluminum electrolysis feeder spray repair equipment based on cold spraying technology according to claim 1, characterized in that, It also includes a flow distribution component (26), which includes an electrically controlled valve (261) and a flow sensor (262) disposed on the straight pipe (233); the electrically controlled valve (261) and the flow sensor (262) are arranged sequentially along the airflow direction.

3. The aluminum electrolysis feeder spray repair equipment based on cold spraying technology according to claim 1, characterized in that, The flip cover component (25) includes a bearing seat (251) disposed on the outer wall of the first Laval nozzle (21), a rotating rod (252) rotatably connected to the bearing seat (251), a cover (254) connected to the rotating rod (252) via an extension plate (253), and a micro motor (255) disposed on the outer wall of the negative pressure recovery pipe (24) for driving the rotating rod (252) to rotate; the cover (254) is provided with a plurality of sealing protrusions (2541).

4. The aluminum electrolysis feeder spray repair equipment based on cold spraying technology according to claim 3, characterized in that, It also includes an electromagnetic fixing assembly (256) disposed on the outer wall of the cover (254), the electromagnetic fixing assembly (256) including an iron protrusion (2561) disposed on the outer wall of the cover (254), and an electromagnetic block (2562) disposed on the outer wall of the first Laval nozzle (21) and located at the position corresponding to the iron protrusion (2561).

5. The aluminum electrolysis feeder spray repair equipment based on cold spraying technology according to claim 1, characterized in that, The quantitative feeding component (35) includes a feeding pipe (351) whose outer wall is slidably connected to the inner wall of the positioning pipe (34), a support frame (352) located at the top of the feeding pipe (351), a drive motor (353) located at the top of the support frame (352), a detection shaft (354) located at the execution end of the drive motor (353) and extending into the feeding pipe (351), and a conveying auger (355) located at the end of the detection shaft (354); it also includes a first gear (356) located on the outer wall of the detection shaft (354), an encoder (357) located on the outer wall of the feeding pipe (351), and a second gear (358) located at the detection end of the encoder (357) and meshing with the first gear (356); it also includes a powder raw material pipe (359) whose outlet is connected to the feeding pipe (351).

6. The aluminum electrolysis feeder spray repair equipment based on cold spraying technology according to claim 5, characterized in that, The elastic support component (36) includes multiple elongated through holes (361) passing through the positioning tube (34), multiple extension blocks (362) on the outer wall of the feeding tube (351), the extension blocks (362) passing through the elongated through holes (361); it also includes a first limiting plate (363) on the outer wall of the feeding tube (351), a second limiting plate (364) on the outer wall of the positioning tube (34), and a spring (365) sleeved on the outer wall of the positioning tube (34) and located between the first limiting plate (363) and the second limiting plate (364); the pressing selection component (33) includes a first linear module (331) on the base plate (31), an L-shaped rod (332) on the execution end of the first linear module (331), and an electric cylinder (333) on the top of the L-shaped rod (332) and whose execution end passes through the L-shaped rod (332).

7. The aluminum electrolysis feeder spray repair equipment based on cold spraying technology according to claim 1, characterized in that, The positioning device (10) includes a pipe outer wall spraying positioning component (11), a horizontal plate (12) disposed at the execution end of the pipe outer wall spraying positioning component (11), and a pipe inner wall spraying positioning component (13) disposed at the top of the horizontal plate (12); the pipe outer wall spraying positioning component (11) includes a turntable (111), a power motor (112) located on one side of the turntable (111) and used to drive the turntable (111) to rotate, a second linear module (113) disposed on the turntable (111), a moving frame (114) disposed at the execution end of the second linear module (113), and a telescopic cylinder (115) disposed at the top of the moving frame (114) and whose execution end passes through the moving frame (114); the execution end of the telescopic cylinder (115) is connected to the bottom of the horizontal plate (12).

8. The aluminum electrolysis feeder spray repair equipment based on cold spraying technology according to claim 7, characterized in that, The inner wall spraying positioning component (13) includes a shaft (131) rotatably connected to the top of the horizontal plate (12) at its bottom, a mounting block (132) located at the top of the shaft (131), a worm gear (133) sleeved on the outer wall of the shaft (131), a stepper motor (134) located on the horizontal plate (12), and a worm (135) located at the actuating end of the stepper motor (134) and meshing with the worm gear (133); the mounting block (132) is connected to the first Laval nozzle (21).

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