Water curtain cooling type intelligent laser welding machine and method based on smoke poisoning prevention

Abstract

The invention discloses a water curtain cooling type intelligent laser welding machine and method based on smoke poisoning prevention, and relates to the technical field of intelligent laser welding machines, the water curtain cooling type intelligent laser welding machine comprises a base, a welding mechanism is arranged in front of the base, and a Y-axis mechanism and an X-axis mechanism are arranged above the base and used for clamping and moving a machined part; a water curtain mechanism is arranged in front of the welding mechanism and used for generating a water curtain on the outer side of laser, smoke is prevented from being blocked, the water curtain mechanism comprises a circulating water curtain unit and a pressure unit, a closed water curtain is formed around a laser welding point through the circulating water curtain unit of the water curtain mechanism, and diffusion of high-temperature smoke can be effectively blocked. Purified water sprayed by the spray head forms a continuously flowing water curtain in the water collecting box, so that smoke dust can be cooled, the rising speed of the smoke dust can be reduced, part of metal particles can be settled in water, overflow of harmful smoke dust is greatly reduced, and the risk that an operator inhales the metal smoke dust is remarkably reduced.

Description

Technical Field

[0001] This invention relates to the field of intelligent laser welding machine technology, specifically to a water curtain-cooled intelligent laser welding machine and method for preventing fume poisoning. Background Technology

[0002] Laser welding machines, also known as laser welding machines or laser welding machines, are machines used for laser welding in material processing. Laser welding uses high-energy laser pulses to locally heat a small area of ​​the material. The energy of the laser radiation diffuses into the interior of the material through heat conduction, melting the material to form a specific molten pool.

[0003] According to the patent titled "An Intelligent Integrated Laser Welding Machine" (patent publication number: CN119501275A, patent publication date: 2025-02-25), it includes: a welding machine body, a welding platform located on the welding machine body, a strip platform disposed around the welding platform and flush with the surface of the welding platform, two sets of fixed points mirror-displayed on the strip platform and respectively located on both sides of the welding platform, two sets of voltage stabilizing components respectively disposed on the two sets of fixed points, a suction mechanism disposed on one of the sets of voltage stabilizing components, and a grinding section disposed on the strip platform and connected to one of the sets of fixed points. This design integrates workpiece placement, fixing, and subsequent grinding processing into one unit, improving the diversity of effects, making the operation and processing process more convenient, effectively improving the actual user experience, and employing automated control in multiple areas, improving intelligence and the accuracy of various tasks during processing, and optimizing the overall processing effect.

[0004] Based on the aforementioned existing technologies, current water-curtain cooled intelligent laser welding machines and methods for preventing fume poisoning still have the following problems: laser welding fumes are extremely hot, rise rapidly, and contain a large number of nanoscale metal particles, which are easily inhaled and penetrate deep into the alveoli, causing metal fume fever. Traditional ventilation cannot completely prevent this most harmful part of the fume from spreading to the working area. Therefore, this invention provides a water-curtain cooled intelligent laser welding machine and method for preventing fume poisoning. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a water-curtain-cooled intelligent laser welding machine and method for preventing fume poisoning. It solves the problem that laser welding fumes are extremely hot, rise rapidly, and contain a large number of nanoscale metal particles, making them easily inhaled and penetrating deep into the alveoli, leading to metal fume fever. Traditional ventilation systems cannot completely prevent this most harmful part of the fume from spreading to the work area.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a water-curtain-cooled intelligent laser welding machine and method for preventing fume poisoning, comprising a base, a welding mechanism disposed in front of the base, a Y-axis mechanism and an X-axis mechanism disposed above the base for clamping and moving the workpiece, and a water curtain mechanism disposed in front of the welding mechanism for generating a water curtain outside the laser to prevent the fume from being blocked. The water curtain mechanism includes: The circulating water curtain unit is located in front of the welding mechanism and includes a ring box and a water collection box. Several nozzles are installed in a circular array at the bottom of the water collection box. An inlet pipe is fixedly installed on one side of the ring box, and an outlet pipe is fixedly installed on one side of the water collection box. A circulating filter assembly is provided at one end of the inlet pipe and the outlet pipe for filtering and circulating pure water. Pure water is sprayed out through the nozzles and enters the interior of the water collection box to form a water curtain, thus preventing the smoke from being blocked. The pressure unit is located on the front side of the ring box and the water collection box, and is used to ensure that the water collection box is in close contact with the surface of the workpiece.

[0007] Preferably, an exhaust pipe is installed through the right side of the water collection box, and the end of the exhaust pipe away from the water collection box is connected to an external exhaust fan to discharge the smoke trapped by the water curtain. A rubber pad is fixedly installed at the bottom of the water collection box, and the rubber pad is located between the water collection box and the workpiece to prevent smoke from flowing out from the bottom of the water collection box.

[0008] Preferably, the circulating filtration assembly includes a water tank fixedly installed on the top of the base. A first water pump is provided at the front end of the water tank, and the output end of the first water pump is fixedly connected to the inlet pipe. A second water pump is provided at the rear end of the water tank, and the input end of the second water pump is fixedly connected to the outlet pipe. This allows the purified water sprayed from the nozzle to be collected and circulated into the interior of the water tank through a water collection box, thus enabling the recycling of purified water. A bracket is fixedly installed inside the water tank, and a filter plate is slidably inserted into the bracket. The filter plate penetrates the top plate of the water tank and is inserted into the bracket, thereby filtering the circulating water inside the water tank.

[0009] Preferably, the pressure unit includes a mounting block fixedly installed on the front side of the ring box, a connecting block fixedly installed on the front side of the water collection box, a sliding column slidably installed inside the mounting block, and the bottom end of the sliding column is fixedly connected to the connecting block. A spring is installed on the surface of the sliding column, and the spring is located between the mounting block and the connecting block. A limit groove is formed on one side of the sliding column, and a limit block is fixedly installed on the top of the mounting block. One end of the limit block slides inside the limit groove to limit the movement of the sliding column.

[0010] Preferably, the welding mechanism includes a fixed seat fixedly installed on the front side of the base, and a sliding seat slidably installed on the front side of the fixed seat via a track seat. A first motor is fixedly installed on the top of the fixed seat, and a lead screw fixedly installed at the output end of the first motor rotates inside the fixed seat and is threadedly installed inside the sliding seat. A laser machine is fixedly installed on the front side of the sliding seat, and a ring box is fixedly installed on the surface of the laser machine.

[0011] Preferably, the Y-axis mechanism includes a set of track blocks fixedly installed above the base, and a support frame is slidably installed on the surface of the track blocks. Two support plates are fixedly installed on the top of the sliding blocks through the support frame. A fixing block is fixedly installed inside the base, and the lower plate of the support frame is threadedly rotatably installed on the surface of the Y-axis lead screw. A third motor is fixedly installed inside the base, and the output end of the third motor is fixedly connected to the Y-axis lead screw.

[0012] Preferably, the X-axis mechanism includes a mounting frame fixedly installed above the base, and a clamping seat is slidably installed on the front side of the inner side of the mounting frame via a track. An X-axis lead screw is rotatably installed inside the mounting frame, and the X-axis lead screw rotates within the internal thread of the clamping seat. A second motor is fixedly installed on one side of the mounting frame, and the output end of the second motor is fixedly connected to one end of the X-axis lead screw.

[0013] This invention also discloses an operation method for a water curtain-cooled intelligent laser welding machine based on preventing fume poisoning, comprising the following steps: S1: First, the workpiece is clamped and moved left and right by the X-axis mechanism, and moved back and forth by the Y-axis mechanism to adjust the welding position of the workpiece. S2: Next, the welding mechanism drives the water curtain mechanism to move down, and the water collection box is pressed down on the processing part by the pressure unit. The circulating filter component puts the pure water inside into the ring box through the water inlet pipe and sprays it out through the nozzle. The sprayed water enters the water collection box for collection, thus creating a water curtain. S3: Then, the water sprayed from the nozzle enters the inside of the water collection box and flows back into the inside of the circulating filter assembly through the water outlet pipe for filtration and circulation.

[0014] This invention provides a water-curtain cooled intelligent laser welding machine and method for preventing fume poisoning. Compared with the prior art, it has the following advantages: 1. This intelligent laser welding machine and method based on water curtain cooling to prevent fume poisoning forms a closed water curtain around the laser welding point through the circulating water curtain unit of the water curtain mechanism, which can effectively block the diffusion of high-temperature fumes. The pure water sprayed from the nozzle forms a continuously flowing water curtain in the water collection box, which not only cools the fumes and reduces their rising speed, but also causes some metal particles to settle in the water, greatly reducing the leakage of harmful fumes, thereby significantly reducing the risk of operators inhaling metal fumes.

[0015] 2. This intelligent laser welding machine and method based on water curtain cooling to prevent fume poisoning utilizes a rubber pad at the bottom of the water collection box that fits tightly against the surface of the workpiece. Combined with an external exhaust fan connected to the exhaust pipe, this creates a localized negative pressure environment, ensuring effective collection and directional discharge of welding fumes. The water curtain, while blocking fumes, also provides suction, achieving source control and orderly emission of dust, solving the problem that traditional ventilation methods cannot completely capture nanoscale dust. 3. This intelligent laser welding machine and method based on water curtain cooling to prevent flue gas poisoning includes a circulating filtration component comprising a water tank, a filter plate, and a first and a second water pump, enabling the recycling and purification of cooling water. Water sprayed from the nozzles is collected in a collection box and then returned to the water tank through an outlet pipe. After impurities are removed by the filter plate, the water can be supplied back to the inlet pipe, saving water resources, maintaining a clean water curtain, and ensuring long-term stable operation. Attached Figure Description

[0016] Figure 1 This is a right-side perspective view of the present invention. Figure 2 This is a bottom-view perspective view of the three-dimensional structure of the present invention; Figure 3 This is a right-side perspective view of the water curtain mechanism of the present invention. Figure 4 This is a rear-view perspective structural diagram of the water curtain mechanism of the present invention. Figure 5 This is a partial three-dimensional structural diagram of the water curtain mechanism of the present invention.

[0017] In the diagram: 1. Base; 2. Water curtain mechanism; 21. Circulating water curtain unit; 211. Ring box; 212. Nozzle; 213. Inlet pipe; 214. Water collection box; 215. Outlet pipe; 216. Rubber pad; 217. Exhaust pipe; 22. Pressure unit; 221. Mounting block; 222. Sliding column; 223. Connecting block; 224. Spring; 225. Limiting groove; 226. Limiting block; 3. Welding mechanism; 31. Fixed seat; 32. Track seat; 33. 34. Sliding seat; 35. Laser machine; 4. First motor; 4. Y-axis mechanism; 41. Track block; 42. Sliding block; 43. Support frame; 44. Support plate; 45. Fixing block; 46. Y-axis lead screw; 47. Third motor; 5. X-axis mechanism; 51. Mounting frame; 52. Clamping seat; 53. X-axis lead screw; 54. Second motor; 6. Circulating filter assembly; 61. Water tank; 62. Insert bracket; 63. Filter plate; 64. First water pump; 65. Second water pump. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-5 The present invention provides a technical solution: The intelligent laser welding machine and method based on water curtain cooling to prevent fume poisoning includes a base 1, a welding mechanism 3 in front of the base 1, and a Y-axis mechanism 4 and an X-axis mechanism 5 above the base 1 for clamping and moving the workpiece. A water curtain mechanism 2 is located in front of the welding mechanism 3 to generate a water curtain outside the laser to prevent the fume from being blocked. The water curtain mechanism 2 includes: The circulating water curtain unit 21 is located in front of the welding mechanism 3 and includes a ring box 211 and a water collection box 214. Several nozzles 212 are installed in a circular array at the bottom of the water collection box 214. An inlet pipe 213 is fixedly installed on one side of the ring box 211, and an outlet pipe 215 is fixedly installed on one side of the water collection box 214. A circulating filter assembly 6 is provided at one end of the inlet pipe 213 and the outlet pipe 215 for filtering and circulating pure water. Pure water is sprayed out through the nozzles 212 and enters the interior of the water collection box 214 to form a water curtain, thus preventing the blockage of flue gas. Pressure unit 22 is disposed on the front side of ring box 211 and water collection box 214, and is used to make water collection box 214 in close contact with the surface of the workpiece.

[0020] In this embodiment, an exhaust pipe 217 is installed through the right side of the water collection box 214, and the end of the exhaust pipe 217 away from the water collection box 214 is connected to an external exhaust fan to discharge the smoke sealed by the water curtain. A rubber pad 216 is fixedly installed at the bottom of the water collection box 214. The rubber pad 216 is located between the water collection box 214 and the workpiece to prevent smoke from flowing out from the bottom of the water collection box 214.

[0021] An exhaust pipe 217 is installed on the right side of the water collection box 214 to connect to an external exhaust fan, which can actively extract the flue gas sealed by the water curtain; a rubber pad 216 is set at the bottom of the water collection box 214 to make it fit more tightly with the surface of the workpiece, effectively preventing the flue gas from escaping from the bottom and enhancing the smoke and dust sealing and collection effect.

[0022] In this embodiment, the circulating filtration assembly 6 includes a water tank 61 fixedly installed on the top of the base 1. A first water pump 64 is provided at the front end of the water tank 61, and the output end of the first water pump 64 is fixedly connected to the inlet pipe 213. A second water pump 65 is provided at the rear end of the water tank 61, and the input end of the second water pump 65 is fixedly connected to the outlet pipe 215. This is used to collect the pure water sprayed from the nozzle 212 through the water collection box 214 and circulate it into the interior of the water tank 61, so as to realize the recycling of pure water. A bracket 62 is fixedly installed inside the water tank 61. A filter plate 63 is slidably inserted into the bracket 62, and the filter plate 63 penetrates the top plate of the water tank 61 and is inserted into the interior of the bracket 62, so as to filter the circulating water inside the water tank 61.

[0023] The first water pump 64 and the second water pump 65 are model Y90L-4. They are electrically connected to an external power supply and can be turned on and off via a human-operated control panel. Together with the water tank 61, the bracket 62, the filter plate 63, and the first water pump 64 and the second water pump 65, they form a complete water circulation and filtration system, realizing the recycling, filtration, and reuse of the water sprayed from the nozzle 212. This is both environmentally friendly and energy-saving, and ensures the continuous clean operation of the water curtain.

[0024] In this embodiment, the pressure unit 22 includes a mounting block 221 fixedly installed on the front side of the ring box 211, a connecting block 223 fixedly installed on the front side of the water collection box 214, a sliding column 222 slidably installed inside the mounting block 221, and the bottom end of the sliding column 222 is fixedly connected to the connecting block 223. A spring 224 is installed on the surface of the sliding column 222, and the spring 224 is located between the mounting block 221 and the connecting block 223. A limiting groove 225 is opened on one side of the sliding column 222, and a limiting block 226 is fixedly installed on the top of the mounting block 221. One end of the limiting block 226 slides inside the limiting groove 225 to limit the movement of the sliding column 222.

[0025] Through the cooperation of mounting block 221, sliding column 222, spring 224, and limiting groove 225 and limiting block 226, the water collection box 214 can adaptively press and tighten according to the undulations of the workpiece surface, maintain sealing, and avoid rigid contact that could damage the workpiece.

[0026] In this embodiment, the welding mechanism 3 includes a fixed seat 31 fixedly installed on the front side of the base 1, and a sliding seat 33 is slidably installed on the front side of the fixed seat 31 via a track seat 32. A first motor 35 is fixedly installed on the top of the fixed seat 31, and a lead screw fixedly installed at the output end of the first motor 35 rotates inside the fixed seat 31 and is threadedly installed inside the sliding seat 33. A laser machine 34 is fixedly installed on the front side of the sliding seat 33, and a ring box 211 is fixedly installed on the surface of the laser machine 34.

[0027] The first motor 35, model KV3SF-8521F-WR, is electrically connected to an external power supply and is operated by personnel through a control panel. Through the fixed base 31, track base 32, sliding base 33, first motor 35, and screw drive mechanism, the laser machine 34 is moved vertically with precision, driving the water curtain mechanism 2 to press down synchronously, ensuring that welding and sealing are carried out simultaneously.

[0028] In this embodiment, the Y-axis mechanism 4 includes a set of track blocks 41 fixedly installed above the base 1, and a support frame 43 is slidably installed on the surface of the track blocks 41. Two support plates 44 are fixedly installed on the top of the sliding block 42 through the support frame 43. A fixing block 45 is fixedly installed inside the base 1. The lower plate of the support frame 43 is threadedly rotatably installed on the surface of the Y-axis lead screw 46. A third motor 47 is fixedly installed inside the base 1, and the output end of the third motor 47 is fixedly connected to the Y-axis lead screw 46.

[0029] The third motor 47, model EDSMT-2T110-020A, is electrically connected to an external power supply and is operated by a human-controlled control panel. Driven by the track block 41, support frame 43, Y-axis lead screw 46 and the third motor 47, it enables smooth movement of the workpiece in the forward and backward directions, facilitating adjustment of the welding position and improving processing flexibility and accuracy.

[0030] In this embodiment, the X-axis mechanism 5 includes a mounting frame 51 fixedly mounted on the base 1, and a clamping seat 52 is slidably mounted on the front side of the inner side of the mounting frame 51 via a track. An X-axis lead screw 53 is rotatably mounted inside the mounting frame 51, and the X-axis lead screw 53 rotates within the clamping seat 52. A second motor 54 is fixedly mounted on one side of the mounting frame 51, and the output end of the second motor 54 is fixedly connected to one end of the X-axis lead screw 53.

[0031] The second motor 54, model KV3SF-8521F-WR, is electrically connected to an external power supply and can be started and stopped by a human operator control panel. Driven by the mounting frame 51, clamping seat 52, X-axis lead screw 53 and the second motor 54, it can clamp and move the workpiece in the left and right directions. It works in conjunction with the Y-axis mechanism 4 to complete welding positioning at any position in the plane.

[0032] The operation method of a water curtain-cooled intelligent laser welding machine for preventing fume poisoning is characterized by the following steps: S1: First, 52 clamps the workpiece, 54 drives 53 to rotate, 53 drives the two 52 to move, so that the workpiece moves left and right, and the third motor 47 drives 46 to rotate, 46 drives 43 to move back and forth, so that the workpiece moves back and forth and the welding position of the workpiece is adjusted. S2: Next, 35 operates to rotate the lead screw, causing 33 and 34 to move down, and also causing 2 to move down. 214 presses down on the workpiece. 223 drives 224 to move up and squeeze 224. 64 operates to allow the pure water inside 61 to enter the interior of 211 through 213 and be sprayed out through 212. The sprayed water enters the interior of 214 for collection, creating a water curtain. S3: Then, the water sprayed out by 212 enters the interior of 214 and flows back into the interior of 6 through 215 for filtration and circulation.

[0033] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water-curtain cooled intelligent laser welding machine for preventing fume poisoning, comprising a base, a welding mechanism disposed in front of the base, and a Y-axis mechanism and an X-axis mechanism disposed above the base for clamping and moving the workpiece, characterized in that: A water curtain mechanism is provided in front of the welding mechanism to generate a water curtain outside the laser, preventing the smoke from being blocked. The water curtain mechanism includes: The circulating water curtain unit is located in front of the welding mechanism and includes a ring box and a water collection box. Several nozzles are installed in a circular array at the bottom of the water collection box. An inlet pipe is fixedly installed on one side of the ring box, and an outlet pipe is fixedly installed on one side of the water collection box. A circulating filter assembly is provided at one end of the inlet pipe and the outlet pipe for filtering and circulating pure water. Pure water is sprayed out through the nozzles and enters the interior of the water collection box to form a water curtain, thus preventing the smoke from being blocked. The pressure unit is located on the front side of the ring box and the water collection box, and is used to ensure that the water collection box is in close contact with the surface of the workpiece.

2. The intelligent laser welding machine based on water curtain cooling to prevent fume poisoning as described in claim 1, characterized in that: An exhaust pipe is installed through the right side of the water collection box, and the end of the exhaust pipe away from the water collection box is connected to an external exhaust fan to discharge the smoke trapped by the water curtain. A rubber pad is fixedly installed at the bottom of the water collection box, and the rubber pad is located between the water collection box and the workpiece to prevent smoke from flowing out from the bottom of the water collection box.

3. The intelligent laser welding machine based on water curtain cooling to prevent fume poisoning as described in claim 1, characterized in that: The circulating filtration assembly includes a water tank fixedly installed on the top of the base. A first water pump is provided at the front end of the water tank, and the output end of the first water pump is fixedly connected to the inlet pipe. A second water pump is provided at the rear end of the water tank, and the input end of the second water pump is fixedly connected to the outlet pipe. This allows the purified water sprayed from the nozzle to be collected through the water collection box and circulated back into the interior of the water tank, enabling the reuse of purified water. A bracket is fixedly installed inside the water tank, and a filter plate is slidably inserted into the bracket. The filter plate penetrates the top plate of the water tank and is inserted into the bracket, thereby filtering the circulating water inside the water tank.

4. The intelligent laser welding machine based on water curtain cooling to prevent fume poisoning according to claim 1, characterized in that: The pressure unit includes a mounting block fixedly installed on the front side of the ring box, a connecting block fixedly installed on the front side of the water collection box, a sliding column slidably installed inside the mounting block, and the bottom end of the sliding column is fixedly connected to the connecting block. A spring is installed on the surface of the sliding column, and the spring is located between the mounting block and the connecting block. A limit groove is opened on one side of the sliding column, and a limit block is fixedly installed on the top of the mounting block, with one end of the limit block sliding inside the limit groove to limit the movement of the sliding column.

5. The intelligent laser welding machine based on water curtain cooling to prevent fume poisoning according to claim 1, characterized in that: The welding mechanism includes a fixed seat fixedly installed on the front side of the base, and a sliding seat slidably installed on the front side of the fixed seat via a track seat. A first motor is fixedly installed on the top of the fixed seat, and a lead screw fixedly installed at the output end of the first motor rotates inside the fixed seat and is threadedly installed inside the sliding seat. A laser machine is fixedly installed on the front side of the sliding seat, and a ring box is fixedly installed on the surface of the laser machine.

6. The intelligent laser welding machine based on water curtain cooling to prevent fume poisoning according to claim 1, characterized in that: The Y-axis mechanism includes a set of track blocks fixedly installed above the base, and a support frame is slidably installed on the surface of the track blocks. Two support plates are fixedly installed on the top of the sliding blocks through the support frame. A fixing block is fixedly installed inside the base, and the lower plate of the support frame is threadedly rotatably installed on the surface of the Y-axis lead screw. A third motor is fixedly installed inside the base, and the output end of the third motor is fixedly connected to the Y-axis lead screw.

7. The intelligent laser welding machine based on water curtain cooling to prevent fume poisoning according to claim 1, characterized in that: The X-axis mechanism includes a mounting frame fixedly installed above the base, and a clamping seat is slidably installed on the front side of the inner side of the mounting frame via a track. An X-axis lead screw is rotatably installed inside the mounting frame, and the X-axis lead screw rotates within the internal thread of the clamping seat. A second motor is fixedly installed on one side of the mounting frame, and the output end of the second motor is fixedly connected to one end of the X-axis lead screw.

8. A water-curtain-cooled intelligent laser welding machine for preventing fume poisoning, employing the operating method of the water-curtain-cooled intelligent laser welding machine for preventing fume poisoning as described in any one of claims 1-7, characterized in that: Includes the following steps: S1: First, the workpiece is clamped and moved left and right by the X-axis mechanism, and moved back and forth by the Y-axis mechanism to adjust the welding position of the workpiece. S2: Next, the welding mechanism drives the water curtain mechanism to move down, and the water collection box is pressed down on the processing part by the pressure unit. The circulating filter component puts the pure water inside into the ring box through the water inlet pipe and sprays it out through the nozzle. The sprayed water enters the water collection box for collection, thus creating a water curtain. S3: Then, the water sprayed from the nozzle enters the inside of the water collection box and flows back into the inside of the circulating filter assembly through the water outlet pipe for filtration and circulation.

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