An autoclave automatic opening and closing cleaning system for preparing silicon-carbon negative electrode material and a use method thereof

Abstract

The application provides a high-pressure kettle automatic opening and closing cleaning system for preparing silicon-carbon negative electrode materials and a use method, and relates to the field of high-pressure kettles. The explosion-proof robot workstation of the high-pressure kettle automatic opening and closing cleaning system for preparing silicon-carbon negative electrode materials is provided with a quick-change device; the quick-change device is connected with an automatic tightening device, a kettle cover transfer tool or a high-pressure water jet wall climbing cleaning robot; a water supply main pipe of a high-pressure water circulating unit is communicated with the high-pressure water jet wall climbing cleaning robot, and a waste water recovery branch pipe is communicated with the high-pressure water jet wall climbing cleaning robot and an explosion-proof sewage discharge valve at the bottom of the high-pressure kettle; a general control unit is signal connected with the explosion-proof robot workstation, the automatic tightening device, the kettle cover transfer tool, the high-pressure water jet wall climbing cleaning robot and the high-pressure water circulating unit. The high-pressure kettle automatic opening and closing cleaning system for preparing silicon-carbon negative electrode materials solves the technical problems of high safety risk of intermittent high-pressure kettles, unstable product quality and low production efficiency in the prior art.

Description

Technical Field

[0001] This application relates to the field of high-pressure reactors, and more specifically, to an automatic opening and closing cleaning system and method for using a high-pressure reactor for preparing silicon-carbon anode materials. Background Technology

[0002] The core equipment for silicon-carbon anode preparation is an intermittent high-pressure reactor. The reactor is kept at a high temperature of 280-420℃ and a high pressure of 1-5MPa for a long time. It also involves flammable and explosive organic solvents and hydrogen, making it a high-risk environment. Furthermore, each production cycle requires key operations such as opening the reactor, discharging the material, and closing the reactor, which are the core links in its industrialization.

[0003] Currently, pilot and mass production lines are still mainly operated manually, which is not adapted to high-risk working conditions and residue cleaning requirements, and has many shortcomings: High safety risks: The flange of the high pressure vessel requires dozens of bolts to be fastened. Manual disassembly and tightening are time-consuming and labor-intensive, and uneven pre-tightening force can easily lead to leakage of the sealing surface, causing combustion and explosion accidents and threatening personal safety.

[0004] Unstable product quality: Hard silicon-carbon residues remaining in the reactor can lead to blind spots and lack of cleanliness standards during manual cleaning, which can easily cause contamination and scrapping of the next batch of products, affecting batch consistency.

[0005] Low production efficiency: Manual operation takes 1-2 hours, becoming a bottleneck in production, reducing the turnover rate of the autoclave, and restricting the production line capacity. Summary of the Invention

[0006] The purpose of this invention is to provide an automatic opening and closing cleaning system and method for preparing silicon-carbon anode materials in a high-pressure reactor, in order to alleviate the technical problems of high safety risks, unstable product quality and low production efficiency of intermittent high-pressure reactors in the prior art.

[0007] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: In a first aspect, the automatic opening and closing cleaning system for preparing silicon-carbon anode materials provided by the present invention includes an explosion-proof robot workstation, an automatic tightening device, a lid transfer fixture, a high-pressure water jet wall-climbing cleaning robot, a high-pressure water circulation unit, and a central control unit. The explosion-proof robot workstation is used to be fixed to the base next to the autoclave, and a quick-change device is provided at the end. The automatic tightening device, the vessel lid transfer fixture, and the high-pressure water jet wall-climbing cleaning robot all include a docking structure, and the quick-change device docks with the docking structure of the automatic tightening device, the vessel lid transfer fixture, or the high-pressure water jet wall-climbing cleaning robot. The high-pressure water circulation unit includes a main water supply pipe and a wastewater recovery branch pipe. The main water supply pipe is connected to the inlet of the high-pressure water jet wall-climbing cleaning robot, and the wastewater recovery branch pipe is connected to the outlet of the high-pressure water jet wall-climbing cleaning robot and the explosion-proof drain valve at the bottom of the autoclave. The central control unit is signal-connected to the explosion-proof robot workstation, the automatic tightening device, the vessel lid transfer fixture, the high-pressure water jet wall-climbing cleaning robot, and the high-pressure water circulation unit.

[0008] Furthermore, the quick-change device includes a robot end female plate and an actuator docking male plate. The robot end female plate is installed at the end of the explosion-proof robot workstation. The actuator docking male plate is detachably connected to the robot end female plate and docks with the docking structure of the automatic tightening device, the vessel lid transfer fixture, or the high-pressure water jet wall-climbing cleaning robot.

[0009] Furthermore, the robot end female plate has a built-in pneumatic locking cylinder, a conical positioning pin, and an explosion-proof signal docking terminal; the actuator docking male plate includes a telescopic locking tongue, a positioning countersunk hole, and an explosion-proof signal docking port; The tapered positioning pin is inserted into the positioning countersunk hole, the pneumatic locking cylinder cooperates with the telescopic locking tongue, and the explosion-proof signal docking terminal is inserted into the explosion-proof signal docking port.

[0010] Furthermore, both the main water supply pipe and the wastewater recovery branch pipe are equipped with explosion-proof electromagnetic reversing valves.

[0011] Furthermore, the automatic tightening device includes a frame and a plurality of retractable tightening shafts mounted on the frame; The frame is provided with the docking structure and has a mounting slot; The plurality of tightening shafts are evenly spaced along the circumference of the mounting groove, and each tightening shaft is embedded in the mounting groove radially along the frame.

[0012] Furthermore, the tightening shaft incorporates a torque sensor and an angle encoder.

[0013] Furthermore, the tightening shaft includes an explosion-proof servo motor, a planetary reduction module, a spline transmission rod, an elastic buffer spring, a sliding guide bearing nest, and an end sleeve; The output shaft of the explosion-proof servo motor is connected to the input end of the planetary reduction module, and the output end of the planetary reduction module is connected to the rear end of the spline transmission rod. The front end of the spline drive rod is fixedly connected to the end sleeve; The sliding guide bearing is nested and embedded inside the annular mounting groove of the frame, and the spline drive rod passes through the inner hole of the sliding guide bearing nest, and the spline drive rod is slidably connected to the sliding guide bearing nest. The elastic buffer spring is sleeved on the outside of the spline transmission rod. One end of the elastic buffer spring abuts against the end face of the sliding guide bearing, and the other end of the elastic buffer spring abuts against the end face of the planetary reduction module housing or the shoulder of the spline transmission rod. The spline drive rod, together with the explosion-proof servo motor, planetary reduction module, elastic buffer spring and end sleeve, is slidably mounted in the annular mounting groove of the frame via a sliding guide bearing as an integral component. The end sleeve has a hexagonal countersunk hole on its end face. The inner wall of the hexagonal countersunk hole has anti-slip serrations, and the hexagonal countersunk hole is used to match the head contour of the high pressure vessel flange fastening bolt.

[0014] Furthermore, the vessel lid transfer fixture includes a ring-shaped clamp-type lifting body, an adjustable slide rail system, a wedge-shaped clamping claw, an arc-shaped anti-slip pad, an explosion-proof electromagnetic locking assembly, a reset spring, and a displacement detection sensor; The inner side of the ring-shaped clamp-type lifting device is fixedly connected to the adjustable slide rail system, and the wedge-shaped clamping claw is slidably connected to the adjustable slide rail system and fixed by locking bolts; The arc-shaped anti-slip pad is fixedly connected to the wedge-shaped clamping claw for fitting against the outer wall of the kettle lid; the explosion-proof electromagnetic locking assembly is fixedly connected to the main body of the annular clamp-type lifting device, and its locking end is connected to the wedge-shaped clamping claw in a transmission connection. The two ends of the reset spring are respectively connected to the main body of the annular clamp-type lifting device and the hook of the wedge-shaped clamping claw; the displacement detection sensor is fixedly installed at the end of the adjustable slide system, and its detection surface is set opposite to the wedge-shaped clamping claw.

[0015] Furthermore, the high-pressure water jet wall-climbing cleaning robot includes a three-axis explosion-proof robotic arm and a self-rotating fan-shaped high-pressure nozzle. The three-axis explosion-proof robotic arm is used to fix itself to the inner wall of the reactor, and the self-rotating fan-shaped high-pressure nozzle is installed at the end of the three-axis explosion-proof robotic arm.

[0016] Secondly, the method of using the automatic opening and closing cleaning system for preparing silicon-carbon anode materials as described in any one of claims 1-9 of the present invention includes: Automatic reactor opening: After the main control unit confirms that the pressure inside the reactor has been released to atmospheric pressure and the temperature is lower than the set temperature, it starts the explosion-proof robot workstation. The explosion-proof robot workstation connects to the automatic tightening device to loosen and untie the bolts on the reactor lid in a diagonal sequence. Kettle lid transfer: The explosion-proof robot workstation connects to the kettle lid transfer fixture to transfer the kettle lid; Automatic cleaning inside the vessel: The explosion-proof robot workstation connects to the high-pressure water jet wall-climbing cleaning robot, which is then moved into the vessel and scans and cleans according to a preset path. Visual inspection and closed-loop cleaning: The camera of the high-pressure water jet wall-climbing cleaning robot captures real-time images, and the cleanliness is compared with the preset images. The cleaning is repeated until the cleanliness reaches the preset value, and then the high-pressure water circulation unit is activated to discharge wastewater. Automatic vessel closure: The explosion-proof robot workstation connects to the high-pressure water jet wall-climbing cleaning robot, which is then moved out of the vessel; the explosion-proof robot workstation connects to the vessel lid transfer fixture, which places the vessel lid onto the reactor; the explosion-proof robot workstation connects to the automatic tightening device, which pre-tightens and tightens the bolts on the reactor lid in a diagonal, crisscrossing sequence.

[0017] Based on the above technical solutions, the technical effects achievable by this invention can be analyzed as follows: This invention provides an automatic opening and closing cleaning system for a high-pressure reactor used in the preparation of silicon-carbon anode materials. The system includes an explosion-proof robot workstation, an automatic tightening device, a reactor lid transfer fixture, a high-pressure water jet wall-climbing cleaning robot, a high-pressure water circulation unit, and a central control unit. The explosion-proof robot workstation is fixed to a base next to the high-pressure reactor and has a quick-change device at its end. The automatic tightening device, reactor lid transfer fixture, and high-pressure water jet wall-climbing cleaning robot all include docking structures. The quick-change device docks with the docking structures of the automatic tightening device, reactor lid transfer fixture, or high-pressure water jet wall-climbing cleaning robot. The high-pressure water circulation unit includes a main water supply pipe and a wastewater recovery branch pipe. The main water supply pipe is connected to the inlet of the high-pressure water jet wall-climbing cleaning robot, and the wastewater recovery branch pipe is connected to the outlet of the high-pressure water jet wall-climbing cleaning robot and the explosion-proof drain valve at the bottom of the high-pressure reactor. The central control unit is signal-connected to the explosion-proof robot workstation, the automatic tightening device, the reactor lid transfer fixture, the high-pressure water jet wall-climbing cleaning robot, and the high-pressure water circulation unit.

[0018] An automated opening and closing cleaning system for a high-pressure reactor used in the preparation of silicon-carbon anode materials includes an explosion-proof robot workstation, an automatic tightening device, a reactor lid transfer fixture, a high-pressure water jet wall-climbing cleaning robot, and a high-pressure water circulation unit. All components are connected to a central control unit, enabling fully automated closed-loop operation of the high-pressure reactor. This system is suitable for the high-temperature, high-pressure, flammable, and explosive conditions involved in silicon-carbon anode production, ensuring production safety, product quality, and efficiency. The explosion-proof robot workstation is fixed to a concrete base next to the high-pressure reactor and has a quick-change device at its end. This device can switch between various actuators, such as the automatic tightening device, the reactor lid transfer fixture, and the high-pressure water jet wall-climbing cleaning robot. The automatic tightening device, the reactor lid transfer fixture, and the high-pressure water jet wall-climbing cleaning robot all have docking structures at their tails. The parameters of these docking structures are standardized and uniformly set throughout the system, matching the quick-change device without requiring manual calibration or wiring, achieving seamless connection between all operational steps. The main water supply pipe of the high-pressure water circulation unit is connected to the inlet of the high-pressure water jet wall-climbing cleaning robot. The wastewater recovery branch pipes are connected to the outlet of the high-pressure water jet wall-climbing cleaning robot and the explosion-proof drain valve at the bottom of the autoclave, respectively. The central control unit can control the high-pressure water circulation unit to input or discharge high-pressure water into the high-pressure water jet wall-climbing cleaning robot, collecting flammable and explosive waste liquids in a completely closed manner, preventing the leakage of volatile media, and achieving closed discharge of cleaning wastewater. The central control unit is electrically connected to all subsystems to achieve full-process collaborative control, key data acquisition and traceability, forming an unmanned continuous cycle operation mechanism for autoclave opening, transfer, cleaning, inspection and closing.

[0019] In an automatic opening and closing cleaning system for a high-pressure reactor used for preparing silicon-carbon anode materials, the quick-change device of the explosion-proof robot workstation can be connected to an automatic tightening device. This device controls the automatic tightening device to tighten or loosen the bolts on the reactor lid, enabling unmanned operation and avoiding reliance on manual labor. It also ensures that the reactor lid bolts are tightened evenly, preventing leaks caused by uneven bolt tightening.

[0020] A quick-change device for an explosion-proof robot workstation in an automatic opening and closing cleaning system for preparing silicon-carbon anode materials can be docked with a high-pressure water jet wall-climbing cleaning robot to achieve standardized cleaning and quantifiable cleanliness.

[0021] The central control unit is connected to the explosion-proof robot workstation, automatic tightening device, vessel lid transfer fixture, high-pressure water jet wall-climbing cleaning robot, and high-pressure water circulation unit via signal connection. This integration of the various units enables fully automated linkage throughout the process, reducing auxiliary time and achieving unmanned continuous cycle operation. Furthermore, the central control unit can record key data, forming a traceability chain, and enabling one-click operation and remote monitoring.

[0022] Enhanced Safety: This system is an integrated system designed for the high-risk working conditions of high-pressure autoclaves for silicon-carbon anodes. The explosion-proof robotic workstation enables fully unmanned operation, freeing personnel from high-risk environments and reducing casualties. Precise bolt tightening control prevents leakage at the sealing surface, manages the risk of combustion and explosion, and is specifically adapted to high-temperature, high-pressure, flammable and explosive working conditions, significantly improving the stability of equipment operation. It solves the industry pain point that existing general-purpose automated equipment cannot adapt to the high-risk working conditions of high-pressure autoclaves for lithium-ion battery silicon-carbon anodes.

[0023] Product quality standardization: The high-pressure water jet wall-climbing cleaning robot, combined with a preset path, achieves thorough cleaning without dead angles. The closed-loop inspection mechanism ensures that the cleanliness is standardized and meets the standards, eliminating the drawbacks of manual cleaning, ensuring batch consistency of products, and preventing residue contamination and scrapping. It is also suitable for cleaning the silicon-carbon anode containing silicon-carbon residue, further improving the stability of product quality.

[0024] Improved production efficiency: The coordinated operation of various subsystems enables fully automated and continuous operation of the entire process of "opening the vessel - transferring - cleaning - inspection - closing the vessel", reducing the manual assistance time of 1-2 hours to within 20 minutes. The linkage of multiple vessels further increases production capacity, improves the turnover rate of high pressure vessels, realizes unmanned continuous cycle operation, and reduces production costs.

[0025] Data is traceable and highly controllable: The central control unit collects key data, binds it to production batches, and stores it in the MES system to form a complete traceability chain; one-click operation and remote monitoring enable unified management and control of each subsystem, improve the ability to manage large-scale production, and meet the audit requirements of high-end customers.

[0026] Highly adaptable and with great potential for widespread application: The parameters are expressed in a range format, making it compatible with high-pressure reactors of different specifications without requiring major modifications to the main equipment; The components are mature, easy to maintain, and cost-controllable, making it widely applicable to pilot and mass production lines of silicon-carbon anodes, balancing practicality and protection range, resulting in significant economic and safety benefits. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of an automatic opening and closing cleaning system for a high-pressure reactor used in the preparation of silicon-carbon anode materials, provided in an embodiment of this application; Figure 2 A schematic diagram of a quick-change device in an automatic opening and closing cleaning system for preparing silicon-carbon anode materials, provided in an embodiment of this application; Figure 3This is a schematic diagram of an automatic tightening device in an automatic opening and closing cleaning system for preparing silicon-carbon anode materials, provided in an embodiment of this application.

[0029] icon: 1-High-pressure autoclave; 2-Explosion-proof robot workstation; 21-Robot end female plate; 22-Actuator docking male plate; 23-Pneumatic locking cylinder; 24-Telescopic locking tongue; 25-Conical positioning pin; 26-Positioning countersunk hole; 27-Explosion-proof signal docking terminal; 28-Dock flange; 3-Autoclave lid transfer fixture; 4-Automatic tightening device; 41-Frame; 42-Mounting slot; 43-Tightening shaft; 5-High-pressure water jet wall-climbing cleaning robot; 6-Master control unit. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] See Figures 1 to 3The present invention provides an automatic opening and closing cleaning system for a high-pressure reactor used in the preparation of silicon-carbon anode materials. The system includes an explosion-proof robot workstation 2, an automatic tightening device 4, a reactor lid transfer fixture 3, a high-pressure water jet wall-climbing cleaning robot 5, a high-pressure water circulation unit, and a central control unit 6. The explosion-proof robot workstation 2 is fixed to a base beside the high-pressure reactor 1 and has a quick-change device at its end. The automatic tightening device 4, the reactor lid transfer fixture 3, and the high-pressure water jet wall-climbing cleaning robot 5 all include docking structures. The quick-change device connects to the automatic tightening device 4 and the reactor lid. The docking structure of the transfer fixture 3 or the high-pressure water jet wall-climbing cleaning robot 5 is connected; the high-pressure water circulation unit includes a main water supply pipe and a wastewater recovery branch pipe. The main water supply pipe is connected to the inlet of the high-pressure water jet wall-climbing cleaning robot 5, and the wastewater recovery branch pipe is connected to the outlet of the high-pressure water jet wall-climbing cleaning robot 5 and the explosion-proof drain valve at the bottom of the pressure vessel 1; the main control unit 6 is connected to the explosion-proof robot workstation 2, the automatic tightening device 4, the vessel cover transfer fixture 3, the high-pressure water jet wall-climbing cleaning robot 5 and the high-pressure water circulation unit.

[0034] In an automated opening and closing cleaning system for a high-pressure reactor used in the preparation of silicon-carbon anode materials, an explosion-proof robot workstation 2, an automatic tightening device 4, a reactor lid transfer fixture 3, a high-pressure water jet wall-climbing cleaning robot 5, and a high-pressure water circulation unit are all connected to a central control unit 6. This enables fully automated, closed-loop operation of the high-pressure reactor 1, adapting to the high-temperature, high-pressure, flammable, and explosive conditions of silicon-carbon anode production, ensuring production safety, product quality, and production efficiency. The explosion-proof robot workstation 2 is fixed to a concrete base next to the high-pressure reactor 1 and has a quick-change device at its end. This device can switch between various actuators, such as the automatic tightening device 4, the reactor lid transfer fixture 3, and the high-pressure water jet wall-climbing cleaning robot 5. The automatic tightening device 4, the reactor lid transfer fixture 3, and the high-pressure water jet wall-climbing cleaning robot 5 all have docking structures at their tails. The parameters of these docking structures are standardized and uniformly set throughout the system, matching the quick-change devices without requiring manual calibration or wiring, achieving seamless connection between all operational steps. The main water supply pipe of the high-pressure water circulation unit is connected to the inlet of the high-pressure water jet climbing cleaning robot 5. The wastewater recovery branch pipes are connected to the outlet of the high-pressure water jet climbing cleaning robot 5 and the explosion-proof drain valve at the bottom of the autoclave 1, respectively. The central control unit 6 can control the high-pressure water circulation unit to input or discharge high-pressure water into the high-pressure water jet climbing cleaning robot 5, collecting flammable and explosive waste liquids in a completely closed manner, preventing the leakage of volatile media, and achieving closed discharge of cleaning wastewater. The central control unit 6 is electrically connected to all subsystems to achieve full-process collaborative control, key data acquisition and traceability, forming an unmanned continuous cycle operation mechanism for autoclave opening, transfer, cleaning, inspection and autoclave closing.

[0035] In an automatic opening and closing cleaning system for a high-pressure reactor used for preparing silicon-carbon anode materials, the quick-change device of the explosion-proof robot workstation 2 can be connected to the automatic tightening device 4 to control the automatic tightening device 4 to tighten or loosen the bolts on the reactor lid, thereby achieving unmanned operation and avoiding reliance on manual labor; ensuring that the reactor lid bolts are tightened evenly, and avoiding the problem of easy leakage caused by uneven bolt tightening.

[0036] In an automatic opening and closing cleaning system for preparing silicon-carbon anode materials, the quick-change device of the explosion-proof robot workstation 2 can be docked with the high-pressure water jet wall-climbing cleaning robot 5 to achieve standardized cleaning and quantifiable cleanliness.

[0037] The central control unit 6 is connected to the explosion-proof robot workstation 2, the automatic tightening device 4, the vessel lid transfer fixture 3, the high-pressure water jet wall-climbing cleaning robot 5, and the high-pressure water circulation unit via signal connection. This enables the integration of each unit, achieving fully automated linkage throughout the process, shortening auxiliary time, and realizing unmanned continuous cycle operation. Furthermore, the central control unit 6 can record key data, forming a traceability chain, and enabling one-click operation and remote monitoring.

[0038] Enhanced safety: This system is an integrated system designed for the high-risk working conditions of the silicon-carbon anode high-pressure autoclave 1. The explosion-proof robot workstation 2 achieves full-process unmanned operation, freeing personnel from high-risk environments and reducing casualties; precise control of bolt tightening avoids leakage at the sealing surface, manages the risk of combustion and explosion, and is specially adapted to high-temperature, high-pressure, flammable and explosive working conditions, significantly improving the stability of equipment operation; it solves the industry pain point that existing general automation equipment cannot be adapted to the high-risk working conditions of the lithium battery silicon-carbon anode high-pressure autoclave 1.

[0039] Product quality standardization: The high-pressure water jet wall-climbing cleaning robot 5, combined with a preset path, achieves thorough cleaning without dead angles. The closed-loop inspection mechanism ensures that the cleanliness is standardized and meets the standards, eliminating the drawbacks of manual cleaning, ensuring batch consistency of products, and preventing residue contamination and scrapping. It is also suitable for cleaning the silicon-carbon anode containing silicon-carbon residue, further improving the stability of product quality.

[0040] Improved production efficiency: The coordinated operation of various subsystems enables fully automated and continuous operation of the entire process of "opening the vessel - transferring - cleaning - inspection - closing the vessel", reducing the manual assistance time of 1-2 hours to within 20 minutes. The linkage of multiple vessels further increases production capacity, improves the turnover rate of the high-pressure vessel, realizes unmanned continuous cycle operation, and reduces production costs.

[0041] Data is traceable and highly controllable: The central control unit 6 collects key data, binds it to production batches, and stores it in the MES system to form a complete traceability chain; one-click operation and remote monitoring enable unified management and control of each subsystem, improve the ability to manage large-scale production, and meet the audit requirements of high-end customers.

[0042] Highly adaptable and with great promotional value: The parameters are expressed in a range format, which can be adapted to different specifications of high pressure vessels1 without major modifications to the main equipment; the components are mature, easy to maintain, and cost-controllable, and can be widely used in pilot and mass production lines of silicon-carbon anodes, taking into account both practicality and protection range, with significant economic and safety benefits.

[0043] The structure of the explosion-proof robot workstation 2 is described in detail below: In the optional solution provided by the embodiments of the present invention, the quick-change device includes a robot end female plate 21 and an actuator docking male plate 22. The robot end female plate 21 is installed at the end of the explosion-proof robot workstation 2. The actuator docking male plate 22 is detachably connected to the robot end female plate 21 and docks with the docking structure of the automatic tightening device 4, the lid transfer fixture 3 or the high-pressure water jet climbing cleaning robot 5.

[0044] Specifically, the explosion-proof robot workstation 2 is a positive pressure and intrinsically safe composite explosion-proof six-axis industrial robot with a load capacity of no less than 200kg, preferably 240kg. It has chemical explosion-proof certification and is suitable for the high-temperature, high-pressure, flammable and explosive high-risk environment of silicon-carbon anode production. The quick-change device is an explosion-proof pneumatic locking quick-change disc structure, which is sealed with pressure-resistant and explosion-proof aluminum alloy. It consists of a robot end female disc 21 and an actuator docking male disc 22. The robot end female disc 21 is installed at the end of the explosion-proof robot workstation 2. The actuator docking male disc 22 docks with the docking structure of the automatic tightening device 4, the vessel lid transfer fixture 3, or the high-pressure water jet wall-climbing cleaning robot 5. The robot end female disc 21 can dock with the actuator docking male disc to achieve fully automatic actuator disassembly and switching without manual intervention for calibration, wiring, and disassembly. This ensures coordinated operation of all operational links and achieves stable unmanned operation 24 / 7.

[0045] The explosion-proof robot workstation 2 has a load capacity of no less than 240kg. The end effector quick-change device is designed to be explosion-proof and can quickly switch actuators without manual intervention, ensuring coordinated connection of each operation link.

[0046] In the optional solution provided by the embodiments of the present invention, the robot end female plate has a built-in pneumatic locking cylinder 23, a conical positioning pin 25 and an explosion-proof signal docking terminal 27; the actuator docking male plate 22 includes a telescopic locking tongue 24, a positioning countersunk hole 26 and an explosion-proof signal docking port; the conical positioning pin 25 is inserted into the positioning countersunk hole 26, the pneumatic locking cylinder 23 cooperates with the telescopic locking tongue 24, and the explosion-proof signal docking terminal 27 is inserted into the explosion-proof signal docking port.

[0047] Specifically, the robot end mother plate has a built-in pneumatic locking cylinder 23, a conical positioning pin 25, an explosion-proof signal docking terminal 27, and an electromagnetic unlocking induction module. It achieves quick assembly and disassembly through mechanical coaxial positioning and pneumatic locking, and can switch between various operating actuators. The automatic tightening device 4, the vessel lid transfer tooling 3, or the tail of the high-pressure water jet wall-climbing cleaning robot 5 all integrate standardized docking flanges 28, positioning countersunk holes 26, and explosion-proof signal docking ports of the same specification. The dimensions of the docking flange 28, the positioning hole positions, and the electrical interface parameters are uniformly standardized throughout the entire process, matching the structure of the robot end mother plate in the quick-change device one by one. It achieves non-destructive adaptation through automatic locking by mechanical positioning and automatic handshake of electrical signals, without the need for manual calibration, wiring, or disassembly, thus achieving seamless connection of each operation link.

[0048] The quick-change device relies on a built-in low-power explosion-proof cylinder to drive the telescopic locking tongue 24 to complete mechanical locking and unlocking. It works with the conical positioning pin 25 to eliminate assembly deviations and achieve high-precision coaxial limit. Simultaneously, it completes electrical handshake communication through the explosion-proof signal terminal. The actuator disassembly and switching are completed automatically without manual intervention for calibration, wiring and disassembly. This ensures coordinated operation of all operating links and achieves stable, unmanned operation around the clock.

[0049] The structure of the high-pressure water circulation unit is described in detail below: In the optional solution provided by the embodiments of the present invention, both the main water supply pipe and the wastewater recovery branch pipe are equipped with explosion-proof electromagnetic reversing valves.

[0050] Specifically, the high-pressure water circulation unit is equipped with a double-layer pressure-resistant sealed pipeline. The main water supply pipe is connected to the water inlet of the cleaning robot through an explosion-proof stainless steel corrugated pipe. The wastewater recovery branch pipe is connected to the drain outlet of the cleaning robot and the explosion-proof drain valve at the bottom of the autoclave 1 through an organic solvent-resistant fluororubber sealing hose. Explosion-proof electromagnetic reversing valves are independently installed in the middle sections of the main water supply pipe and the wastewater recovery branch pipe. The linkage logic is as follows: after the central control unit 6 issues a cleaning command, the solenoid valve on the water supply side is simultaneously turned on and the drain solenoid valve is simultaneously opened. The water supply valve is cut off instantly when the cleaning operation ends, and the drain valve is closed after a 3-second delay. The wastewater is diverted by relying on the sealed negative pressure of the pipeline. The flammable and explosive waste liquid is collected in a sealed manner throughout the process, preventing the leakage of volatile media and achieving sealed discharge of cleaning wastewater. The central control unit 6 is electrically connected to all subsystems to realize full-process collaborative control, key data collection and traceability, forming an unmanned continuous cycle operation mechanism of "opening the autoclave-transferring-cleaning-inspection-closing the autoclave". The high-pressure water supply and wastewater recovery unit is integrated into a sealed explosion-proof cabinet. The high-pressure water pump is vertically fixed on a vibration-damping base at the bottom of the cabinet and is an explosion-proof booster pump. The filter is arranged in two stages. The first stage coarse filter is horizontally mounted on the front end of the high-pressure water pump inlet pipe and connected to an external industrial pure water source to intercept large particulate impurities. The second stage precision filter is coaxially installed on the rear end of the high-pressure water pump outlet pipe, adjacent to the high-pressure water output branch pipe, to filter micron-sized solid debris and prevent residue from wearing the nozzle and clogging the pipe. The entire water circuit is laid out with pressure-resistant and explosion-proof seamless metal pipes, which can stably provide high-pressure water at the preset pressure. It works with the rear sealed return pipe to complete the closed-loop wastewater recovery. The sealed wastewater recovery meets environmental protection requirements. The water pressure is adjusted in real time by the water pump frequency converter module, and the outlet water pressure can be flexibly adjusted according to the cleaning needs to adapt to the cleaning needs of different specifications of high pressure vessels.

[0051] The high-pressure water circulation unit allows for flexible adjustment of water pressure.

[0052] The structure of the automatic tightening device 4 is described in detail below: In the optional solution provided by the embodiments of the present invention, the automatic tightening device 4 includes a frame 41 and a plurality of retractable tightening shafts 43 mounted on the frame 41; the frame 41 is provided with a docking structure and a mounting groove 42; the plurality of tightening shafts 43 are evenly spaced along the circumference of the mounting groove 42, and each tightening shaft 43 is embedded in the mounting groove 42 along the radial direction of the frame 41.

[0053] Specifically, the frame 41 is used to dock with the quick changer, and the end face of the frame 41 is provided with an annular mounting groove 42, which integrates multiple circumferentially arranged telescopic tightening shafts 43; usually no less than 12, preferably 24.

[0054] The tightening shaft 43 is used to complete the installation and removal of bolts on the vessel lid; multiple tightening shafts 43 are provided, which can adopt diagonal step-by-step loosening and multi-gradient tightening procedures, and can be alarmed in case of abnormality. The tightening torque can be preset and recorded according to the vessel type and specifications.

[0055] In the optional solution provided by the embodiments of the present invention, the tightening shaft 43 has a built-in torque sensor and angle encoder.

[0056] Specifically, the tightening shaft 43 has a built-in high-precision torque sensor and angle encoder, which can provide real-time feedback on tightening data and abnormal alarms, ensuring uniform pre-tightening force and adapting to the high-pressure sealing requirements of the autoclave 1. The torque can be flexibly preset according to the autoclave specifications.

[0057] In the optional embodiment of the present invention, the tightening shaft 43 includes an explosion-proof servo motor, a planetary reduction module, a spline drive rod, an elastic buffer spring, a sliding guide bearing nest, and an end sleeve; the output shaft of the explosion-proof servo motor is drivenly connected to the input end of the planetary reduction module, and the output end of the planetary reduction module is drivenly connected to the rear end of the spline drive rod; the front end of the spline drive rod is fixedly connected to the end sleeve; the sliding guide bearing nest is embedded inside the annular mounting groove 42 of the frame 41, the spline drive rod passes through the inner hole of the sliding guide bearing nest, and the spline drive rod and the sliding guide bearing nest are slidably connected; the spring... A spring is sleeved on the outside of the spline drive rod. One end of the spring abuts against the end face of the sliding guide bearing, and the other end abuts against the end face of the planetary reducer module or the shoulder of the spline drive rod. The spline drive rod, together with the explosion-proof servo motor, the planetary reducer module, the spring, and the end sleeve, is slidably mounted in the annular mounting groove 42 of the frame 41 via the sliding guide bearing. The end sleeve has a hexagonal countersunk hole on its end face. The inner wall of the hexagonal countersunk hole has anti-slip teeth, and the hexagonal countersunk hole is used to match the head contour of the flange fastening bolt of the autoclave 1.

[0058] Specifically, the retractable tightening shaft 43 includes an explosion-proof servo motor, a planetary reduction module, a spline transmission rod, an elastic buffer spring, and a sliding guide bearing. The tightening shaft 43 is radially embedded inside the annular mounting groove 42 of the frame 41. It achieves radial sliding extension and retraction by relying on the sliding guide bearing. The elastic buffer spring compensates for flange bolt installation deviations and eliminates assembly jamming problems. The explosion-proof servo motor, in conjunction with the planetary reduction module, outputs rotational power to drive the spline transmission rod to rotate synchronously and complete bolt disassembly and assembly. The end sleeve adopts a hexagonal countersunk hole structure with anti-slip teeth on the inner wall, and its specifications match the flange fastening bolts of the high-pressure reactor 1 one by one.

[0059] The automatic tightening device 4 can be adapted to different specifications of high pressure vessels 1.

[0060] The structure of the vessel lid transfer fixture 3 is described in detail below: In the optional embodiment of the present invention, the vessel lid transfer fixture includes an annular clamp-type lifting device body, an adjustable slide system, a wedge-shaped clamping claw, an arc-shaped anti-slip pad, an explosion-proof electromagnetic locking assembly, a reset spring, and a displacement detection sensor. The inner side of the annular clamp-type lifting device body is fixedly connected to the adjustable slide system, and the wedge-shaped clamping claw is slidably connected to the adjustable slide system and fixed by a locking bolt. The arc-shaped anti-slip pad is fixedly connected to the wedge-shaped clamping claw and is used to fit against the outer wall of the vessel lid. The explosion-proof electromagnetic locking assembly is fixedly connected to the annular clamp-type lifting device body, and its locking end is drivenly connected to the wedge-shaped clamping claw. The two ends of the reset spring are respectively connected to the hooks of the annular clamp-type lifting device body and the wedge-shaped clamping claw. The displacement detection sensor is fixedly installed at the end of the adjustable slide system, and its detection surface is opposite to the wedge-shaped clamping claw.

[0061] Specifically, the vessel lid transfer fixture is a specialized lifting device with a self-locking mechanism. The entire lifting device is made of explosion-proof high-strength cast aluminum and features a ring-shaped clamp-type structure. The top integrates a standardized docking flange 28 and an explosion-proof signal socket for docking with the quick-change device at the end of the explosion-proof robot workstation 2. The self-locking mechanism incorporates symmetrically arranged explosion-proof electromagnetic locking components, wedge-shaped clamping claws, a reset spring, and a displacement detection sensor. The wedge-shaped clamping claws are evenly distributed along the circumference of the ring-shaped clamp-type lifting device. An adjustable sliding groove system is provided inside the ring-shaped clamp-type lifting device, and the wedge-shaped clamping claws are installed within this system. The adjustable sliding groove system is equipped with a locking mechanism. The bolts and scales, through adjusting the radial sliding distance of the wedge-shaped clamping claws and cooperating with the arc-shaped anti-slip pads, are compatible with various high-pressure reactor lids with different outer diameters and thicknesses, achieving multi-specification compatible gripping. During gripping, after the displacement sensor detects that the wedge-shaped clamping claws are in place, the explosion-proof electromagnetic locking component locks and limits the position, and the reset spring counteracts the vibration offset, achieving mechanical and electrical dual self-locking to prevent detachment. Moreover, the top connecting flange 28, electrical socket and quick-change device interface parameters are uniformly matched, which can quickly complete the tooling switch, ensure the coordinated connection of the transfer link and the opening and closing links of the reactor, and improve the efficiency of unmanned continuous operation.

[0062] The self-locking mechanism of the vessel lid transfer fixture prevents the vessel lid from slipping off.

[0063] The following is a detailed description of the structure of the high-pressure water jet wall-climbing cleaning robot 5: In the optional solution provided by the embodiments of the present invention, the high-pressure water jet wall-climbing cleaning robot 5 includes a three-axis explosion-proof robotic arm and a self-rotating fan-shaped high-pressure nozzle. The three-axis explosion-proof robotic arm is used to fix to the inner wall of the reactor, and the self-rotating fan-shaped high-pressure nozzle is installed at the end of the three-axis explosion-proof robotic arm.

[0064] Specifically, the high-pressure water jet wall-climbing cleaning robot 5 is a compact cleaning robot. It is based on an explosion-proof climbing robot body and is customized and integrated to address the morphology of the inner wall of the silicon-carbon negative electrode high-pressure reactor 1 and its flammable and explosive working conditions. The whole machine is equipped with a lightweight three-axis explosion-proof robotic arm, a self-rotating fan-shaped high-pressure nozzle, and a high-definition explosion-proof camera with a built-in dustproof and explosion-proof shell. The robot body has built-in magnetic walking tracks and a vacuum adsorption dual-mode fixing base. The tracks are made of wear-resistant silicon carbide rubber to prevent scratching the passivated inner wall of the high-pressure reactor 1. The three-axis explosion-proof robotic arm has a built-in harmonic reducer, which can realize multi-dimensional adjustment of pitch, rotation, and swing angle. The self-rotating fan-shaped high-pressure nozzle has a built-in eddy current pressure regulating valve core and staggered opening. The jet micro-orifice design balances the impact of high-pressure jets with the uniformity of water flow. A high-definition explosion-proof camera with built-in explosion-proof supplementary lighting and an anti-fog, hydrophobic coating isolates the vessel from moisture and volatile organic solvents, making it suitable for confined spaces. It can be magnetically attached to any position on the vessel's inner wall via its bottom base. The robotic arm can flexibly adjust its angle to achieve thorough cleaning of the vessel's inner wall, flange gaps, and bottom sedimentation tank. The high-pressure water unit provides high-pressure water at a pressure of at least 800 bar, preferably 1000 bar. This high-pressure water flow can strip away hardened silicon-carbon residue, meeting the cleaning needs for materials containing silicon-carbon residue. Wastewater is diverted and recycled through a closed pipeline, ensuring a closed discharge and balancing cleaning effectiveness with corrosion protection of the vessel's inner wall.

[0065] The high-pressure water jet wall-climbing cleaning robot 5 operates at a pressure of 1000 bar. A camera transmits images in real time, and image recognition enables a closed-loop system of cleaning, inspection, and rewashing, making it suitable for cleaning applications containing silicon-carbon residues. The high-pressure water jet wall-climbing cleaning robot 5 can be adapted to high-pressure reactors of different specifications.

[0066] The structure of the main control unit 6 is described in detail below: In the optional solutions provided in this embodiment of the invention, the main control unit 6 adopts an explosion-proof PLC controller, such as the Siemens S7-1500 series explosion-proof model, and establishes Profinet industrial Ethernet communication with the controller of the explosion-proof robot workstation 2. It stores multiple sets of differentiated autoclave process formulas, supports one-click start / stop and remote visual monitoring via human-machine interface, and collects key production data such as bolt tightening torque, shaft angle parameters, cleaning water pressure, autoclave cleanliness, and equipment fault codes in real time. It binds a unique production batch code and stores it in the workshop MES system to build a full-link production data traceability ledger. It periodically self-checks the electrical, air pressure, and water pressure conditions of each subsystem and the temperature and pressure parameters inside the autoclave. In case of abnormal conditions, it immediately cuts off power and stops the machine and issues audible and visual alarms to avoid the risk of high-risk operation. It coordinates and schedules all subsystems to work together to achieve unmanned continuous cycle operation of the entire line.

[0067] The main control unit 6 adopts a PLC controller, communicates with the robot via PROFINET, and has human-machine interface, self-test and alarm functions. Key data can be bound to the production batch and stored in the MES system to realize full-process data traceability and collaborative scheduling of various subsystems.

[0068] The present invention provides a method for using an automatic opening and closing cleaning system for a high-pressure reactor used in the preparation of silicon-carbon anode materials, comprising the following steps: Automatic reactor opening: After the main control unit 6 confirms that the pressure inside the reactor has been reduced to atmospheric pressure and the temperature is lower than the set temperature, it starts the explosion-proof robot workstation 2. The explosion-proof robot workstation 2 connects to the automatic tightening device 4 to loosen and untie the bolts on the reactor lid in a diagonal sequence.

[0069] After the main control unit 6 confirms that the reaction is over, the pressure inside the vessel is released to atmospheric pressure (0MPa), and the temperature is <40℃, it starts the explosion-proof robot workstation 2, replaces the automatic tightening device 4, and loosens the bolts in a diagonal sequence, providing real-time data feedback and alarms for any abnormalities to ensure safe operation.

[0070] Kettle lid transfer: Explosion-proof robot workstation 2 connects to kettle lid transfer fixture 3 to transfer the kettle lid.

[0071] After the bolts are removed, the explosion-proof robot workstation 2 quickly switches to the vessel lid transfer fixture 3. The vessel lid transfer fixture 3 grabs the vessel lid and transfers it to a special bracket, seamlessly connecting with the vessel opening process and improving the efficiency of unmanned continuous operation.

[0072] Automatic cleaning inside the vessel: The explosion-proof robot workstation 2 connects to the high-pressure water jet wall-climbing cleaning robot 5, and moves the high-pressure water jet wall-climbing cleaning robot 5 into the vessel. The high-pressure water jet wall-climbing cleaning robot 5 scans and cleans according to the preset path.

[0073] The explosion-proof robot workstation 2 switches to the high-pressure water jet wall-climbing cleaning robot 5, which is then hoisted into the vessel and fixed in place. The robot scans and cleans along a preset path, with the camera transmitting images back in real time. The central control unit 6 monitors the cleaning progress synchronously, achieving coordinated operation with the transfer process.

[0074] Visual inspection and closed-loop cleaning: The camera of the high-pressure water jet wall-climbing cleaning robot 5 captures real-time images, and the cleanliness is compared with the preset images. The cleaning is repeated until the cleanliness reaches the preset value, and then the high-pressure water circulation unit starts to discharge wastewater.

[0075] After cleaning, the camera captures key areas, the image recognition compares the cleanliness, and any residue is automatically rewashed until it meets the standards. Wastewater is discharged in a closed loop, forming a cleaning-inspection-rewashing closed-loop mechanism to ensure product quality.

[0076] Automatic vessel closure: The explosion-proof robot workstation 2 connects to the high-pressure water jet wall-climbing cleaning robot 5, which moves the high-pressure water jet wall-climbing cleaning robot 5 out of the vessel; the explosion-proof robot workstation 2 connects to the vessel lid transfer fixture 3, which places the vessel lid on the reactor; the explosion-proof robot workstation 2 connects to the automatic tightening device 4, which pre-tightens and tightens the bolts on the reactor lid in a diagonal, crisscrossing sequence.

[0077] Take out the high-pressure water jet wall-climbing cleaning robot 5, lift the lid transfer fixture 3 back into place, replace it with the automatic tightening device 4 to pre-tighten and tighten the bolts diagonally and with multi-gradient torque. The torque can be preset according to the type of the vessel, preferably 1800 N·m. The data is uploaded to the MES system in real time, forming a closed loop with the cleaning and opening process to ensure unmanned continuous operation.

[0078] The following is an example illustrating the application of an automatic opening and closing cleaning system for a high-pressure reactor used in the preparation of silicon-carbon anode materials: Example 1: 5m pilot line for silicon-carbon anode 3 Applications of high-pressure reactors.

[0079] Application scenario: A lithium battery company's silicon-carbon anode pilot line, 5m³ 316L stainless steel high-pressure reactor, reaction temperature 350℃, pressure 3MPa, involving flammable and explosive media, requiring unmanned operation, improved quality and efficiency, and adaptability to high-risk working conditions.

[0080] Implementation process: The system adopted in this solution is equipped with a KUKA 240kg explosion-proof robot, 24 tightening shafts 43, a 1000bar compact cleaning robot, and a Siemens S7-1500 PLC for overall control. The high-pressure water unit is linked with the sewage valve to achieve closed discharge of wastewater. All subsystems are coordinated and linked through the overall control unit 6 to achieve unmanned continuous cycle operation.

[0081] Operation process: The operator starts the system with one button. After the system passes the self-inspection, the bolts are disassembled in 90 seconds and the cleaning is completed in 8 minutes. There is no manual intervention throughout the process. The bolt tightening torque is 1800 N·m. The data is uploaded to the MES system. All links are seamlessly connected to form a complete closed loop.

[0082] Operational results: No abnormalities were observed during 72 hours of continuous operation. There was no residue inside the reactor, and the cleanliness was 100%. The turnover rate of the high-pressure reactor was increased by 70%. Data is traceable, and safety risks are eliminated. This fully demonstrates that this system is not a simple splicing of existing equipment, but a customized collaborative system for the high-risk working conditions of silicon-carbon anodes.

[0083] Example 2: Multi-reactor linkage application in silicon-carbon anode mass production line.

[0084] Application scenario: A large lithium battery company's mass production line has 3 high-pressure reactors of 5m³ each. The reactors need to be linked together to reduce manpower and increase efficiency, while ensuring continuity and quality control, and adapting to the needs of large-scale production.

[0085] Implementation process: Two explosion-proof robots are configured, and three reactors share one high-pressure water unit. The central control unit 6 supports multi-reactor process switching, remote monitoring and fault alarm. The operation process of each reactor is coordinated and scheduled through the central control unit 6 to realize unmanned continuous cycle operation of multiple reactors, further improving production efficiency.

[0086] Operational results: The cycle time for each reactor is ≤20 minutes, the product qualification rate is increased to 99.5%, labor costs are reduced by 80%, annual production capacity is increased by 65%, there are no safety accidents, and the data is traceable. It fully meets the high-risk working conditions, quality control and efficiency requirements of large-scale silicon-carbon anode production, highlighting the collaborative innovation advantages of this system.

[0087] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0088] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automatic opening and closing cleaning system for a high-pressure reactor used in the preparation of silicon-carbon anode materials, characterized in that, include: Explosion-proof robot workstation, automatic tightening device, kettle lid transfer fixture, high-pressure water jet wall-climbing cleaning robot, high-pressure water circulation unit and central control unit; The explosion-proof robot workstation is used to be fixed to the base next to the autoclave, and a quick-change device is provided at the end. The automatic tightening device, the vessel lid transfer fixture, and the high-pressure water jet wall-climbing cleaning robot all include a docking structure, and the quick-change device docks with the docking structure of the automatic tightening device, the vessel lid transfer fixture, or the high-pressure water jet wall-climbing cleaning robot. The high-pressure water circulation unit includes a main water supply pipe and a wastewater recovery branch pipe. The main water supply pipe is connected to the inlet of the high-pressure water jet wall-climbing cleaning robot, and the wastewater recovery branch pipe is connected to the outlet of the high-pressure water jet wall-climbing cleaning robot and the explosion-proof drain valve at the bottom of the autoclave. The central control unit is signal-connected to the explosion-proof robot workstation, the automatic tightening device, the vessel lid transfer fixture, the high-pressure water jet wall-climbing cleaning robot, and the high-pressure water circulation unit.

2. The automatic opening and closing cleaning system for the high-pressure reactor used in the preparation of silicon-carbon anode materials according to claim 1, characterized in that, The quick-change device includes a robot end female plate and an actuator docking male plate. The robot end female plate is installed at the end of the explosion-proof robot workstation. The actuator docking male plate is detachably connected to the robot end female plate and docks with the automatic tightening device, the vessel lid transfer fixture, or the docking structure of the high-pressure water jet wall-climbing cleaning robot.

3. The automatic opening and closing cleaning system for the high-pressure reactor used in the preparation of silicon-carbon anode materials according to claim 2, characterized in that, The robot end female plate has a built-in pneumatic locking cylinder, a conical positioning pin, and an explosion-proof signal docking terminal; the actuator docking male plate includes a telescopic locking tongue, a positioning countersunk hole, and an explosion-proof signal docking port; The tapered positioning pin is inserted into the positioning countersunk hole, the pneumatic locking cylinder cooperates with the telescopic locking tongue, and the explosion-proof signal docking terminal is inserted into the explosion-proof signal docking port.

4. The automatic opening and closing cleaning system for the high-pressure reactor used in the preparation of silicon-carbon anode materials according to claim 1, characterized in that, Both the main water supply pipe and the wastewater recovery branch pipe are equipped with explosion-proof electromagnetic reversing valves.

5. The automatic opening and closing cleaning system for the high-pressure reactor used in the preparation of silicon-carbon anode materials according to claim 1, characterized in that, The automatic tightening device includes a frame and a plurality of retractable tightening shafts mounted on the frame; The frame is provided with the docking structure and has a mounting slot; The plurality of tightening shafts are evenly spaced along the circumference of the mounting groove, and each tightening shaft is embedded in the mounting groove radially along the frame.

6. The automatic opening and closing cleaning system for the high-pressure reactor used in the preparation of silicon-carbon anode materials according to claim 5, characterized in that, The tightening shaft has a built-in torque sensor and angle encoder.

7. The automatic opening and closing cleaning system for the high-pressure reactor used in the preparation of silicon-carbon anode materials according to claim 5, characterized in that, The tightening shaft includes an explosion-proof servo motor, a planetary reduction module, a spline transmission rod, an elastic buffer spring, a sliding guide bearing nest, and an end sleeve; The output shaft of the explosion-proof servo motor is connected to the input end of the planetary reduction module, and the output end of the planetary reduction module is connected to the rear end of the spline transmission rod. The front end of the spline drive rod is fixedly connected to the end sleeve; The sliding guide bearing is nested and embedded inside the annular mounting groove of the frame, and the spline drive rod passes through the inner hole of the sliding guide bearing nest, and the spline drive rod is slidably connected to the sliding guide bearing nest. The elastic buffer spring is sleeved on the outside of the spline transmission rod. One end of the elastic buffer spring abuts against the end face of the sliding guide bearing, and the other end of the elastic buffer spring abuts against the end face of the planetary reduction module housing or the shoulder of the spline transmission rod. The spline drive rod, together with the explosion-proof servo motor, planetary reduction module, elastic buffer spring and end sleeve, is slidably mounted in the annular mounting groove of the frame via a sliding guide bearing as an integral component. The end sleeve has a hexagonal countersunk hole on its end face. The inner wall of the hexagonal countersunk hole has anti-slip serrations, and the hexagonal countersunk hole is used to match the head contour of the high pressure vessel flange fastening bolt.

8. The automatic opening and closing cleaning system for the high-pressure reactor used in the preparation of silicon-carbon anode materials according to claim 1, characterized in that, The kettle lid transfer fixture includes a ring-shaped clamp-type lifting body, an adjustable slide rail system, a wedge-shaped clamping claw, an arc-shaped anti-slip pad, an explosion-proof electromagnetic locking assembly, a reset spring, and a displacement detection sensor. The inner side of the ring-shaped clamp-type lifting device is fixedly connected to the adjustable slide rail system, and the wedge-shaped clamping claw is slidably connected to the adjustable slide rail system and fixed by locking bolts; The arc-shaped anti-slip pad is fixedly connected to the wedge-shaped clamping claw for fitting against the outer wall of the kettle lid; the explosion-proof electromagnetic locking assembly is fixedly connected to the main body of the annular clamp-type lifting device, and its locking end is connected to the wedge-shaped clamping claw in a transmission connection. The two ends of the reset spring are respectively connected to the main body of the annular clamp-type lifting device and the hook of the wedge-shaped clamping claw; the displacement detection sensor is fixedly installed at the end of the adjustable slide system, and its detection surface is set opposite to the wedge-shaped clamping claw.

9. The automatic opening and closing cleaning system for the high-pressure reactor used in the preparation of silicon-carbon anode materials according to claim 1, characterized in that, The high-pressure water jet wall-climbing cleaning robot includes a three-axis explosion-proof robotic arm and a self-rotating fan-shaped high-pressure nozzle. The three-axis explosion-proof robotic arm is used to fix itself to the inner wall of the reactor, and the self-rotating fan-shaped high-pressure nozzle is installed at the end of the three-axis explosion-proof robotic arm.

10. A method of using the automatic opening and closing cleaning system for a high-pressure reactor used in the preparation of silicon-carbon anode materials as described in any one of claims 1-9, characterized in that, include: Automatic reactor opening: After the main control unit confirms that the pressure inside the reactor has been released to atmospheric pressure and the temperature is lower than the set temperature, it starts the explosion-proof robot workstation. The explosion-proof robot workstation connects to the automatic tightening device to loosen and untie the bolts on the reactor lid in a diagonal sequence. Kettle lid transfer: The explosion-proof robot workstation connects to the kettle lid transfer fixture to transfer the kettle lid; Automatic cleaning inside the vessel: The explosion-proof robot workstation connects to the high-pressure water jet wall-climbing cleaning robot, which is then moved into the vessel and scans and cleans according to a preset path. Visual inspection and closed-loop cleaning: The camera of the high-pressure water jet wall-climbing cleaning robot captures real-time images, and the cleanliness is compared with the preset images. The cleaning is repeated until the cleanliness reaches the preset value, and then the high-pressure water circulation unit is activated to discharge wastewater. Automatic vessel closure: The explosion-proof robot workstation connects to the high-pressure water jet wall-climbing cleaning robot, which is then moved out of the vessel; the explosion-proof robot workstation connects to the vessel lid transfer fixture, which places the vessel lid onto the reactor; the explosion-proof robot workstation connects to the automatic tightening device, which pre-tightens and tightens the bolts on the reactor lid in a diagonal, crisscrossing sequence.

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