A laser cleaning permeable membrane device and a cleaning method based on liquid spray assistance

Abstract

The present invention discloses a laser cleaning permeable membrane device and a cleaning method based on liquid spray assistance, comprising a workbench, the upper end of which is equipped with a laser emitting mechanism, a permeable membrane moving and flipping mechanism, a loading and unloading mechanism and a spray assisting mechanism, the laser emitting mechanism comprises a laser emitting assembly, the permeable membrane moving and flipping mechanism can clamp, translate and flip the permeable membrane, the loading and unloading mechanism can cooperate with the permeable membrane moving and flipping mechanism to load and unload the permeable membrane, the spray assisting mechanism comprises a water tank and an air pump, an electric heating plate is fixedly installed inside the water tank, the air outlet end of the air pump is connected to the inside of the water tank through a pipeline, and a nozzle is inserted at the upper end of the water tank. Through the above-mentioned structural setting, the physical and chemical contamination of the membrane layer can be removed with high precision and in all directions, and at the same time, the laser method has high controllability, avoiding the surface damage of the membrane, and solving the chemical contamination problem existing in the existing cleaning technology.

Description

Technical Field

[0001] The invention relates to the field of laser cleaning permeable membrane devices, in particular to a laser cleaning permeable membrane device. Background Art

[0002] Membrane separation technology is widely used in many fields, including water treatment, food industry, biochemical and pharmaceutical industries, due to its advantages of high separation efficiency, convenient operation, compact equipment, no phase change and energy saving. Membrane pollution refers to the solutes or particles contained in the filtrate forming precipitation in the mass transfer boundary layer adjacent to the membrane surface during the membrane filtration process, covering the membrane surface or blocking the membrane pores. As time goes by, the membrane's permeation efficiency decreases. In different membrane application fields, the membrane pollution components are different, mainly divided into physical pollution and chemical pollution, generally organic substances such as particles, macromolecules and biological substances, and the permeable membrane must be cleaned regularly.

[0003] Current cleaning methods include mechanical cleaning, electric field cleaning, pneumatic cleaning, ultrasonic cleaning, and chemical cleaning. Mechanical cleaning has size limitations, is time-consuming, and is prone to surface scratches and damage. Electric field cleaning requires the cleaning solution to be conductive, which has limitations and may also cause solution electrolysis, leading to membrane electroplating. Pneumatic cleaning and ultrasonic cleaning are costly, have limited efficiency, and may cause potential damage to the membrane. Chemical cleaning is the most widely used membrane cleaning method, but there are many types of chemical liquids, and the selection and matching are complex. There is a lot of industrial pollution and it is easy to cause irreversible damage to the membrane.

[0004] In view of the deficiencies in the prior art, the present invention provides a laser cleaning permeable membrane device and a cleaning method based on liquid spray assistance. Summary of the invention

[0005] The purpose of the present application is to provide a laser cleaning permeable membrane device, which is provided with a laser emitting component and a spray auxiliary mechanism. The laser emitting component is used to emit a laser light source to directly irradiate the contaminated permeable membrane. At the same time, in the spray auxiliary mechanism, an air pump draws external gas into a water tank to keep the inside of the water tank in a high-pressure state. The electric heating plate heats the liquid in the water tank into steam droplets and fully mixes them with the gas into a mist. The liquid spray droplets are sprayed onto the surface of the permeable membrane to be processed by a nozzle. The contaminated permeable membrane surface is comprehensively cleaned by the thermodynamic effect induced by the laser and the impact force induced by the collapse of microbubbles. The physical and chemical contamination of the membrane layer can be removed with high precision and in all directions. At the same time, the laser method has high controllability, avoids surface damage to the membrane, and solves the chemical contamination problem existing in the existing cleaning technology.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a laser cleaning permeable membrane device, comprising a workbench, a laser emitting mechanism, a permeable membrane moving and flipping mechanism, a loading and unloading mechanism and a spray auxiliary mechanism are installed on the upper end of the workbench, the laser emitting mechanism comprises a laser emitting assembly, the laser emitting assembly comprises a shell, a laser, a beam expander, a beam shaper, a reflector and a galvanometer are fixedly installed from one end to the other end of the shell, the permeable membrane moving and flipping mechanism is arranged below the laser emitting assembly, the permeable membrane moving and flipping mechanism can clamp, translate and flip the permeable membrane, the loading and unloading mechanism can cooperate with the permeable membrane moving and flipping mechanism to load and unload the permeable membrane, the spray auxiliary mechanism comprises a water tank and an air pump, the water tank and the air pump are both fixedly installed on the upper end of the workbench, an electric heating plate is fixedly installed inside the water tank, the air outlet end of the air pump is connected to the inside of the water tank through a pipeline, a nozzle is inserted through the upper end of the water tank, and one end of the nozzle is arranged on one side of the laser emitting assembly.

[0007] Preferably, the permeable membrane moving and flipping mechanism includes a translation component and a flipping component, the translation component includes a chassis, two worm gears, two first slide rails, a transmission member and a sliding plate, a plurality of sleeves are fixedly installed on the upper end of the chassis, the two worm gears are installed on the upper end of the chassis for parallel rotation through the sleeves, two second motors are also fixedly installed on the upper end of the chassis, the output ends of the two second motors are respectively fixedly connected to the two worm gears, the two first slide rails are respectively fixedly installed above the two worm gears through the sleeves, the transmission member includes two sliding rods, a fixed plate, a connecting shaft, a worm wheel, a gear and two second slide rails, the two sliding rods slide respectively The fixing plate is fixedly mounted between the two sliding rods, the connecting shaft is rotatably mounted on the fixing plate through a bearing, the worm wheel is fixedly mounted on the lower end of the connecting shaft, and the worm wheel is meshed with the two worms, the gear is fixedly mounted on the upper end of the connecting shaft, the two second sliding rails are fixedly mounted on the upper ends of the two sliding rods in parallel, the sliding plate is slidably mounted between the two second sliding rails, a central opening is provided in the middle of the sliding plate, a tooth groove is provided on one side of the central opening, the gear is meshed with the tooth groove, the flip assembly is mounted on the upper end of the sliding plate, and the flip assembly can clamp and flip the permeable membrane.

[0008] Preferably, the sizes of the threads on the two worms are the same, and the directions of the threads on the two worms are opposite.

[0009] Preferably, the flip assembly includes a first vertical plate, a flip frame and a first motor, the first vertical plate is fixedly installed on the upper end of the sliding plate, the flip frame is rotatably installed on the top of the first vertical plate, the first motor is fixedly installed on the top of the first vertical plate, and the output end of the first motor is fixedly connected to one end of the flip frame.

[0010] Preferably, a plurality of sliders are slidably mounted on the inner wall of the flip frame, the upper and lower ends of both ends of the flip frame are provided with grooves, a rotating block is rotatably mounted in the middle of the groove, and a convex column is fixedly mounted on the upper end of one of the rotating blocks.

[0011] Preferably, the loading and unloading mechanism includes a second vertical plate and a loading and unloading frame, the second vertical plate is fixedly installed on the upper end of the workbench, the loading and unloading frame is rotatably installed on the top of the second vertical plate, a material cavity is provided inside the loading and unloading frame, one end of the material cavity is connected to the outside, and connecting ports are provided on both sides of the loading and unloading frame.

[0012] Preferably, the position of the communication port corresponds to the position of the flip frame, the width of the communication port is the same as the thickness of the flip frame, and the width of the material cavity is the same as the width of the flip frame opening.

[0013] Preferably, notches are provided at the upper ends of both ends of the connecting port, and the positions of the two notches correspond to the positions of the two rotating blocks. A fixed inclined plate is fixedly installed in the notch, and a first flip inclined plate is installed at one end of the fixed inclined plate through a first torsion spring hinge, and a second flip inclined plate is installed at the other end of the fixed inclined plate through a second torsion spring hinge.

[0014] Preferably, the laser emitting mechanism also includes a ball screw, a lifting plate and a turntable, the ball screw is fixedly mounted on the upper end of the workbench, the lifting plate is fixedly connected to the screw slider of the ball screw, the laser emitting assembly is fixedly mounted on the lifting plate, and the turntable is fixedly mounted on one end of the screw rod of the ball screw.

[0015] Preferably, the present invention also provides a cleaning method based on liquid spray assistance, the method comprising the following steps:

[0016] Place the permeable membrane in the flip frame, and clamp the permeable membrane by using the slider and the rotating block;

[0017] The laser beam generated by the laser enters the beam shaper after being expanded by the beam expander. The laser emitted by the beam shaper enters the reflector and then reflects into the galvanometer. It is focused on the surface of the permeable membrane for cleaning by the galvanometer. At the same time, the air pump is started to draw external gas into the water tank to keep the inside of the water tank in a high pressure state. The electric heating plate heats the liquid in the water tank into steam droplets and fully mixes them with the gas into mist. The liquid spray droplets are sprayed onto the surface of the permeable membrane to be processed by the nozzle.

[0018] The two second motors are started synchronously to drive the two worms to rotate, driving the sliding plate to translate in two vertical directions, so that the entire permeable membrane is irradiated and cleaned by laser and spray, and then the first motor is started to drive the flip frame to rotate 180 degrees, so as to clean the other side of the permeable membrane in an all-round way;

[0019] After both sides of the permeable membrane are repeatedly cleaned three times, the flip frame is moved into the loading and unloading frame, the permeable membrane to be cleaned is placed in the loading and unloading frame in advance, the first motor is driven to drive the flip frame to flip, the cleaned permeable membrane falls into the loading and unloading frame, and the permeable membrane to be cleaned falls into the flip frame, completing the loading and unloading.

[0020] In summary, the technical effects and advantages of the present invention are as follows:

[0021] 1. In the present invention, a laser emitting component and a spray auxiliary mechanism are provided. The laser emitting component is used to emit a laser light source to directly irradiate the contaminated permeable membrane. At the same time, in the spray auxiliary mechanism, an air pump draws external gas into a water tank to keep the inside of the water tank in a high-pressure state. The electric heating plate heats the liquid in the water tank into steam droplets and fully mixes them with the gas into a mist. The liquid spray droplets are sprayed onto the surface of the permeable membrane to be processed by the nozzle. The thermodynamic effect induced by the laser and the impact force induced by the collapse of microbubbles are used to comprehensively clean the surface of the contaminated permeable membrane. The physical and chemical contamination of the membrane layer can be removed with high precision and in all directions. At the same time, the laser method has high controllability, which avoids surface damage to the membrane and solves the chemical contamination problem existing in the existing cleaning technology.

[0022] 2. In the present invention, the permeable membrane moving and flipping mechanism includes a translation component and a flipping component. The translation component includes two worms and a transmission member. The transmission member includes a worm wheel, a gear and a sliding plate. The worm wheel is meshed with the two worms. The two worms rotate in the same direction to drive the worm wheel to rotate. The worm wheel is coaxially connected to the gear, which drives the gear to rotate and thus drives the sliding plate to translate. The two worms rotate in opposite directions to drive the worm wheel to translate, and the direction of translation is perpendicular to the above-mentioned translation direction. The two actions cooperate with each other to drive the flipping component above the sliding plate to move freely within a specific range. The flipping component can clamp and flip the permeable membrane. In conjunction with the translation component, the permeable membrane can be translated and flipped, which is convenient for all-round cleaning of both sides of the permeable membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the cross-section structure of the spray assist mechanism of the present invention;

[0026] Figure 3It is a structural schematic diagram of the permeable membrane moving and flipping mechanism of the present invention;

[0027] Figure 4 For the present invention Figure 3 The enlarged view of point A in the middle;

[0028] Figure 5 It is a structural schematic diagram of the transmission member of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the loading and unloading mechanism of the present invention;

[0030] Figure 7 For the present invention Figure 6 The enlarged view of point B in the middle;

[0031] Figure 8 It is a structural schematic diagram of the laser emitting mechanism of the present invention.

[0032] In the figure: 1, workbench; 2, laser emitting mechanism; 201, ball screw; 202, lifting plate; 203, laser emitting assembly; 204, turntable; 3, permeable membrane moving and flipping mechanism; 301, chassis; 302, worm; 303, first slide rail; 304, sliding rod; 305, fixed plate; 306, connecting shaft; 307, worm gear; 308, gear; 309, second slide rail; 310, sliding plate; 311, center opening; 312, first vertical plate; 313, flip Frame; 314, first motor; 315, slider; 316, groove; 317, rotating block; 318, boss; 319, second motor; 4, loading and unloading mechanism; 401, second vertical plate; 402, loading and unloading frame; 403, material cavity; 404, connecting port; 405, notch; 406, fixed inclined plate; 407, first flip inclined plate; 408, second flip inclined plate; 5, spray auxiliary mechanism; 501, water tank; 502, air pump; 503, electric heating plate; 504, nozzle. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1: Reference Figure 1 and Figure 2The laser cleaning permeable membrane device shown in the figure comprises a workbench 1, wherein a laser emitting mechanism 2, a permeable membrane moving and flipping mechanism 3, a loading and unloading mechanism 4 and a spray auxiliary mechanism 5 are installed on the upper end of the workbench 1, wherein the laser emitting mechanism 2 comprises a laser emitting assembly 203, wherein the laser emitting assembly 203 comprises a shell, wherein a laser, a beam expander, a beam shaper, a reflector and a galvanometer are fixedly installed in sequence from one end to the other end of the shell, wherein the permeable membrane moving and flipping mechanism 3 is arranged below the laser emitting assembly 203, wherein the loading and unloading mechanism 4 The spray auxiliary mechanism 5 can cooperate with the permeable membrane moving and flipping mechanism 3 to load and unload the permeable membrane. The spray auxiliary mechanism 5 includes a water tank 501 and an air pump 502. The water tank 501 and the air pump 502 are fixedly installed on the upper end of the workbench 1. The lower end of the water tank 501 is fixedly installed with an electric heating plate 503. The air outlet end of the air pump 502 is connected to the inside of the water tank 501 through a pipeline. A nozzle 504 is inserted at the upper end of the water tank 501. One end of the nozzle 504 is set on one side of the laser emitting component 203. The permeable membrane moving and flipping mechanism 3 The permeable membrane can be clamped. The laser beam generated by the laser enters the beam shaper after being expanded by the beam expander. The laser emitted by the beam shaper enters the reflector and then reflects into the galvanometer. It is focused on the surface of the permeable membrane for cleaning by the galvanometer. At the same time, the air pump 502 is started to extract external gas into the water tank 501, so that the inside of the water tank 501 is kept in a high pressure state. The electric heating plate 503 heats the liquid in the water tank 501 into steam droplets and fully mixes with the gas into mist. The liquid spray droplets are sprayed onto the surface of the permeable membrane to be processed by the nozzle 504. The permeable membrane moves The flipping mechanism 3 can also translate and flip the permeable membrane, so that all places on both sides of the entire permeable membrane can be cleaned by laser and spray irradiation. This method uses a laser light source to directly irradiate the contaminated permeable membrane, and at the same time sprays liquid spray on the irradiated surface. The thermodynamic effect induced by the laser and the impact force induced by the collapse of microbubbles are used to comprehensively clean the surface of the contaminated permeable membrane. The physical and chemical contamination of the membrane layer can be removed in an all-round manner with high precision. At the same time, the laser method has high controllability, which avoids surface damage to the membrane and solves the chemical contamination problem existing in existing cleaning technologies.

[0035] Embodiment 2 is different from the above embodiment in that Figure 3-Figure 5As shown, the permeable membrane moving and flipping mechanism 3 includes a translation component and a flipping component, the translation component includes a chassis 301, two worms 302, two first slide rails 303, a transmission member and a sliding plate 310, a plurality of sleeves are fixedly installed on the upper end of the chassis 301, the two worms 302 are mounted on the upper end of the chassis 301 through the sleeves for parallel rotation, the upper end of the chassis 301 is also fixedly installed with two second motors 319, the output ends of the two second motors 319 are respectively fixedly connected to the two worms 302, the two first slide rails 303 are respectively fixedly installed above the two worms 302 through the sleeves, The transmission member includes two sliding rods 304, a fixed plate 305, a connecting shaft 306, a worm wheel 307, a gear 308 and two second slide rails 309. The two sliding rods 304 are slidably mounted on the two first slide rails 303 respectively. The fixed plate 305 is fixedly mounted between the two sliding rods 304. The connecting shaft 306 is rotatably mounted on the fixed plate 305 through a bearing. The worm wheel 307 is fixedly mounted on the lower end of the connecting shaft 306, and the worm wheel 307 is meshed with the two worms 302. The gear 308 is fixedly mounted on the upper end of the connecting shaft 306. The two second slide rails 309 are fixedly mounted in parallel. At the upper ends of the two sliding rods 304, the sliding plate 310 is slidably installed between the two second slide rails 309. A central opening 311 is provided in the middle of the sliding plate 310. A tooth groove is provided on one side of the central opening 311. The gear 308 is meshed with the tooth groove. The sizes of the threads on the two worms 302 are the same, and the directions of the threads on the two worms 302 are opposite. The two second motors 319 are used to drive the two worms 302 to rotate in the same direction, which can drive the worm wheel 307 to rotate. The worm wheel 307 drives the gear 308 to rotate. The gear 308 acts on the sliding plate 310 to drive the sliding plate 310 to move along the second slide rail 309. The two second motors 319 are used to drive the two worms 302 to rotate in opposite directions, and the worm wheel 307 does not rotate but translates along the first slide rail 303, driving the transmission member to translate along the first slide rail 303. By changing the rotation direction of the two second motors 319, the sliding plate 310 can be controlled to move in two mutually perpendicular directions, thereby driving each position of the permeable membrane to be under the laser emitting component 203, and cleaning the permeable membrane in all directions. The flip component is installed on the upper end of the sliding plate 310, and the flip component can clamp and flip the permeable membrane, drive the permeable membrane to flip, and clean both sides of the permeable membrane.

[0036] Embodiment 3 is different from the above embodiments in that Figure 6 and Figure 7As shown, the flip assembly includes a first vertical plate 312, a flip frame 313 and a first motor 314. The first vertical plate 312 is fixedly installed on the upper end of the sliding plate 310, and the flip frame 313 is rotatably installed on the top of the first vertical plate 312. The first motor 314 is fixedly installed on the top of the first vertical plate 312. The output end of the first motor 314 is fixedly connected to one end of the flip frame 313. Driving the first motor 314 to drive the flip frame 313 to rotate can drive the permeable membrane to flip.

[0037] A plurality of sliders 315 are slidably mounted on the inner wall of the flip frame 313. Grooves 316 are provided at the upper and lower ends of both ends of the flip frame 313. A rotating block 317 is rotatably mounted in the middle of the groove 316. A convex column 318 is fixedly mounted on the upper end of one of the rotating blocks 317. The permeable membrane is placed in the frame opening of the flip frame 313. The sliders 315 carry the permeable membrane. The gravity of the permeable membrane acts on the sliders 315, driving it to drop to the lowest position. The rotating block 317 is driven to rotate by the convex column 318, so that one end of the rotating block 317 moves out of the position of the groove 316. The rotating block 317 cooperates with the slider 315 to clamp the permeable membrane.

[0038] The loading and unloading mechanism 4 includes a second vertical plate 401 and a loading and unloading frame 402. The second vertical plate 401 is fixedly installed on the upper end of the workbench 1. The loading and unloading frame 402 is rotatably installed on the top of the second vertical plate 401. A material cavity 403 is arranged inside the loading and unloading frame 402. One end of the material cavity 403 is connected to the outside. Both sides of the loading and unloading frame 402 are provided with a connecting port 404. The position of the connecting port 404 corresponds to the position of the flip frame 313. The width of the connecting port 404 is the same as the width of the flip frame 313. The thickness of the rotating frame 313 is the same, and the width of the material cavity 403 is the same as the width of the frame opening of the flip frame 313. After the permeable membrane is cleaned, the flip frame 313 is moved from the connecting port 404 into the loading and unloading frame 402, and the permeable membrane to be cleaned is placed in the loading and unloading frame 402 in advance. The first motor 314 is driven to drive the flip frame 313 to flip, and the cleaned permeable membrane falls into the loading and unloading frame 402, and the permeable membrane to be cleaned falls into the flip frame 313. The loading and unloading can be completed quickly, thereby improving the efficiency of continuous cleaning of the permeable membrane.

[0039] The upper ends of both ends of the connecting port 404 are provided with notches 405, and the positions of the two notches 405 correspond to the positions of the two rotating blocks 317. A fixed inclined plate 406 is fixedly installed in the notch 405, and one end of the fixed inclined plate 406 is installed with a first flip inclined plate 407 through a first torsion spring hinge, and the first torsion spring hinge is installed on the outer side of the fixed inclined plate 406, so that the first flip inclined plate 407 can only flip outward, and the other end of the fixed inclined plate 406 is installed with a second flip inclined plate 408 through a second torsion spring hinge, and the second torsion spring hinge is installed on the inner side of the fixed inclined plate 406, so that the second flip inclined plate 408 can only flip inward. When the flip frame 313 is outside the loading and unloading frame 402, the state of the rotating block 317 is as follows Figure 4 As shown, when the flip frame 313 moves into the loading and unloading frame 402, the convex column 318 acts on the first flip inclined plate 407 and the fixed inclined plate 406, driving the rotating block 317 to rotate into the groove 316, and then the convex column 318 pushes the second flip inclined plate 408 to flip inward. When the flip frame 313 moves to the inside of the loading and unloading frame 402, the osmotic membrane is released from the clamping state. After the flip frame 313 is flipped, the osmotic membrane falls onto the loading and unloading frame 402 under the action of gravity, and the new osmotic membrane to be cleaned is The membrane falls into the flip frame 313. When the flip frame 313 moves toward the outside of the loading and unloading frame 402, the boss 318 acts on the second flip inclined plate 408 and the fixed inclined plate 406, driving the rotating block 317 to rotate out of the groove 316. Then the boss 318 pushes the first flip inclined plate 407 to flip outward. When the flip frame 313 moves out of the loading and unloading frame 402, the permeable membrane is in a clamped state. The opening and releasing of the clamping state of the permeable membrane can be controlled without manual operation, which is convenient for loading and unloading.

[0040] Embodiment 4 is different from the above embodiments in that Figure 8 As shown, the laser emitting mechanism 2 also includes a ball screw 201, a lifting plate 202 and a turntable 204. The ball screw 201 is fixedly installed on the upper end of the workbench 1, the lifting plate 202 is fixedly connected to the screw slider of the ball screw 201, the laser emitting assembly 203 is fixedly installed on the lifting plate 202, and the turntable 204 is fixedly installed on one end of the screw of the ball screw 201. By rotating the turntable 204 to drive the screw of the ball screw 201 to rotate, the lifting plate 202 can be driven to rise and fall, thereby driving the laser emitting assembly 203 to rise and fall, so as to facilitate the adjustment of the laser irradiation intensity and effect.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser cleaning permeable membrane device, comprising a workbench, characterized in that: The upper end of the workbench is equipped with a laser emitting mechanism, a permeable membrane moving and flipping mechanism, a loading and unloading mechanism and a spray auxiliary mechanism, the laser emitting mechanism includes a laser emitting assembly, the laser emitting assembly includes a shell, a laser, a beam expander, a beam shaper, a reflector and a galvanometer are fixedly installed from one end to the other end of the shell, the permeable membrane moving and flipping mechanism is arranged below the laser emitting assembly, the permeable membrane moving and flipping mechanism can clamp, translate and flip the permeable membrane, the loading and unloading mechanism can cooperate with the permeable membrane moving and flipping mechanism to load and unload the permeable membrane, the spray auxiliary mechanism includes a water tank and an air pump, the water tank and the air pump are both fixedly installed on the upper end of the workbench, an electric heating plate is fixedly installed inside the water tank, the air outlet end of the air pump is connected with the inside of the water tank through a pipeline, a nozzle is inserted through the upper end of the water tank, and one end of the nozzle is arranged on one side of the laser emitting assembly; The permeable membrane moving and flipping mechanism includes a translation component and a flipping component. The translation component includes a chassis, two worms, two first slide rails, a transmission member and a sliding plate. A plurality of sleeves are fixedly installed on the upper end of the chassis. The two worms are installed on the upper end of the chassis through the sleeves for parallel rotation. Two second motors are also fixedly installed on the upper end of the chassis. The output ends of the two second motors are respectively fixedly connected to the two worms. The two first slide rails are respectively fixedly installed above the two worms through the sleeves. The transmission member includes two sliding rods, a fixed plate, a connecting shaft, a worm wheel, a gear and two second slide rails. The two sliding rods are respectively slidably installed Installed on two first slide rails, the fixed plate is fixedly installed between two sliding rods, the connecting shaft is rotatably installed on the fixed plate through a bearing, the worm wheel is fixedly installed on the lower end of the connecting shaft, and the worm wheel is meshed with two worms, the gear is fixedly installed on the upper end of the connecting shaft, the two second slide rails are fixedly installed in parallel on the upper ends of the two sliding rods, the sliding plate is slidably installed between the two second slide rails, a central opening is provided in the middle of the sliding plate, a tooth groove is provided on one side of the central opening, the gear is meshed with the tooth groove, the flip assembly is installed on the upper end of the sliding plate, and the flip assembly can clamp and flip the permeable membrane.

2. A laser cleaning permeable membrane device according to claim 1, characterized in that: The sizes of the threads on the two worms are the same, and the directions of the threads on the two worms are opposite.

3. A laser cleaning permeable membrane device according to claim 1, characterized in that: The flip assembly includes a first vertical plate, a flip frame and a first motor. The first vertical plate is fixedly installed on the upper end of the sliding plate, the flip frame is rotatably installed on the top of the first vertical plate, the first motor is fixedly installed on the top of the first vertical plate, and the output end of the first motor is fixedly connected to one end of the flip frame.

4. A laser cleaning permeable membrane device according to claim 3, characterized in that: A plurality of slide blocks are slidably mounted on the inner wall of the flip frame. The upper and lower ends of both ends of the flip frame are provided with grooves. A rotating block is rotatably mounted in the middle of the groove. A convex column is fixedly mounted on the upper end of one of the rotating blocks.

5. A laser cleaning permeable membrane device according to claim 4, characterized in that: The loading and unloading mechanism includes a second vertical plate and a loading and unloading frame. The second vertical plate is fixedly installed on the upper end of the workbench. The loading and unloading frame is rotatably installed on the top of the second vertical plate. A material cavity is provided inside the loading and unloading frame. One end of the material cavity is connected to the outside. Connecting ports are provided on both sides of the loading and unloading frame.

6. A laser cleaning permeable membrane device according to claim 5, characterized in that: The position of the communication port corresponds to the position of the flip frame, the width of the communication port is the same as the thickness of the flip frame, and the width of the material cavity is the same as the width of the flip frame opening.

7. The laser cleaning permeable membrane device according to claim 5, characterized in that: The upper ends of both ends of the connecting port are provided with notches, and the positions of the two notches correspond to the positions of the two rotating blocks. A fixed inclined plate is fixedly installed in the notch, and one end of the fixed inclined plate is installed with a first flip inclined plate through a first torsion spring hinge, and the other end of the fixed inclined plate is installed with a second flip inclined plate through a second torsion spring hinge.

8. The laser cleaning permeable membrane device according to claim 4, characterized in that: The laser emitting mechanism also includes a ball screw, a lifting plate and a turntable. The ball screw is fixedly installed on the upper end of the workbench, the lifting plate is fixedly connected to the screw slider of the ball screw, the laser emitting assembly is fixedly installed on the lifting plate, and the turntable is fixedly installed on one end of the screw rod of the ball screw.

9. A method for cleaning a permeable membrane using a laser cleaning device according to any one of claims 4 to 8, characterized in that: The steps include: Place the permeable membrane in the flip frame, and clamp the permeable membrane by using the slider and the rotating block; The laser beam generated by the laser enters the beam shaper after being expanded by the beam expander. The laser emitted by the beam shaper enters the reflector and then reflects into the galvanometer. It is focused on the surface of the permeable membrane for cleaning by the galvanometer. At the same time, the air pump is started to draw external gas into the water tank to keep the inside of the water tank in a high pressure state. The electric heating plate heats the liquid in the water tank into steam droplets and fully mixes them with the gas into mist. The liquid spray droplets are sprayed onto the surface of the permeable membrane to be processed by the nozzle. The two second motors are started synchronously to drive the two worms to rotate, driving the sliding plate to translate in two vertical directions, so that the entire permeable membrane is irradiated and cleaned by laser and spray, and then the first motor is started to drive the flip frame to rotate 180 degrees, so as to clean the other side of the permeable membrane in an all-round way; After both sides of the permeable membrane are repeatedly cleaned three times, the flip frame is moved into the loading and unloading frame, the permeable membrane to be cleaned is placed in the loading and unloading frame in advance, the first motor is driven to drive the flip frame to flip, the cleaned permeable membrane falls into the loading and unloading frame, and the permeable membrane to be cleaned falls into the flip frame, completing the loading and unloading.

Images