Laser cleaning equipment

Abstract

The present invention discloses a laser cleaning device, including a laser cleaning machine, and also including: a cleaning head, wherein the cleaning head is connected to the laser cleaning machine through an optical fiber; a connecting tube, which is installed on the side of the cleaning head, and an angle-adjustable irradiation tube is installed on the end of the connecting tube, wherein a reflector seat for reflecting laser is installed in the irradiation tube, and the laser cleaning machine emits laser into the reflector seat in the irradiation tube through the optical fiber; a hollow motor is installed on the side of the cleaning head, and is used to rotate and adjust the connecting tube. The present invention uses the coordination between structures to inflate the irradiation tube with air by using the jet assembly during the laser irradiation cleaning process, so that the irradiation tube blows out air, thereby greatly reducing the smoke or soot generated by the laser irradiation from entering the irradiation tube to cause pollution to the reflector seat, thereby effectively extending the service life of the reflector seat, extending the cleaning cycle, and further improving the work efficiency.

Description

Technical Field

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

[0002] Laser cleaning technology refers to the process of using high-energy laser beams to irradiate the surface of the workpiece, causing the dirt, rust or coating on the surface to evaporate or peel off instantly, thereby achieving a clean cleaning process. It has the characteristics of no grinding, no contact, no heat effect and is suitable for objects of various materials. It is currently considered to be the most reliable and effective solution.

[0003] For example, Chinese patent publication number CN107185916B discloses a laser cleaning system for cleaning the inner wall of a pipeline. The invention can complete cleaning work at a large angle, and is flexible and convenient to operate, thereby effectively solving the laser cleaning work of the inner wall of a pipeline.

[0004] However, the device does not clean the smoke and fumes generated during laser cleaning, and since it cleans the inside of the pipe, the spatial environment is relatively closed and narrow. Therefore, if the smoke and dust generated are not cleaned, it will accelerate the contamination of the laser cleaning head and reflector and other devices, thereby shortening the cleaning cycle of the reflector and laser cleaning head, and then reducing the overall laser cleaning efficiency. Summary of the invention

[0005] The object of the present invention is to provide a laser cleaning device to solve at least one technical problem existing in the above-mentioned prior art.

[0006] To achieve the above object, the present invention provides the following technical solution: a laser cleaning device, including a laser cleaning machine, and further comprising:

[0007] A cleaning head, wherein the cleaning head is connected to the laser cleaning machine via an optical fiber;

[0008] A connecting tube is installed on the side of the cleaning head, and an angle-adjustable irradiation tube is installed at the end of the connecting tube. A reflector seat for reflecting laser light is installed in the irradiation tube. The laser cleaning machine emits laser light to the reflector seat in the irradiation tube through an optical fiber.

[0009] A hollow motor, mounted on the side of the cleaning head, is used to rotate and adjust the connecting cylinder;

[0010] The mobile platform can move forward and backward along the axial direction of the pipeline, and the cleaning head is installed on the mobile platform through a connecting column;

[0011] The jet assembly is used to inflate air into the irradiation tube and blow the air out of the irradiation tube.

[0012] Preferably, the jet assembly includes a circular air box fixed on the top of the cleaning head, the circular air box is connected to the irradiation tube through an air outlet pipe, a rotating tube is fixed to the inner wall of the circular air box, and a rotatable rotating box is installed on the rotating tube, and the rotating tube and the circular air box are eccentrically arranged, the rotating tube is connected to the rotating box, and the end of the rotating tube extending out of the circular air box is connected to an air intake assembly that can provide clean air, a piston block is slidably installed on the inner wall of the rotating box, a push rod is slidably installed through the side wall of the rotating box, and the push rod also penetrates the piston block and is fixedly connected to the piston block, rollers are installed at both ends of the push rod, and the rollers are in contact with the inner wall of the circular air box, and the outer walls on both sides of the rotating box are provided with air outlet holes that can exhaust air one-way into the circular air box, and a one-way valve that allows air to be sucked into the rotating box in one direction is installed in the rotating tube.

[0013] Preferably, the air intake assembly comprises an L-shaped elbow fixed on the top of both sides of the cleaning head, the bottom ends of the two L-shaped elbows are both equipped with an air intake pipe, and the two air intake pipes face the direction of the irradiation tube, and the opposite ends of the two L-shaped elbows are slidably mounted with a switching pipe, and the bottom end of the rotating pipe is connected to the switching pipe through a flexible pipe that can only be bent;

[0014] The air intake assembly also includes a filter assembly installed in the L-shaped elbow for filtering air;

[0015] The air intake assembly also includes a switching assembly, which is used to connect the two L-shaped elbows to the switching pipe alternately.

[0016] Preferably, the switching assembly comprises an elastic telescopic rod rotatably mounted on the top of the cleaning head, and the telescopic end of the elastic telescopic rod is rotatably connected to the switching tube, and the tops of both sides of the switching tube are provided with connecting ports, and the opposite ends of the two L-shaped curved tubes are provided with connecting channels inside, and when the switching tube moves and extends into the L-shaped curved tube on one side, the connecting port on the same side will be staggered with the connecting channel, and the connecting channel on the other side will be connected with the connecting port;

[0017] The filter assembly includes a filter plate rotatably installed at the bend of the L-shaped elbow, and a torsion spring is installed at the connection between the filter plate and the L-shaped elbow. A block for blocking the filter plate is fixed to the inner wall of the L-shaped elbow, and a rotatable cleaning brush is installed on the inner wall of the L-shaped elbow below the filter plate.

[0018] Preferably, a detachable material storage cover is installed at the bottom of the connection between the L-shaped elbow and the air intake pipe, and the material storage cover is lower than the inner wall of the air intake pipe.

[0019] Preferably, the air intake assembly includes an air intake pipe connected to the rotating pipe, and the air intake pipe is connected to an external air purifier.

[0020] Preferably, a guide block is installed on the inner wall of the irradiation tube to guide the air and make the air spray out from the irradiation tube at an angle.

[0021] Preferably, a driving motor for driving the rotating box to rotate is installed on the top of the circular air box.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] Through the coordination between structures, during the laser irradiation cleaning process, the present invention utilizes the jet assembly to inflate the irradiation tube, causing the irradiation tube to blow out air, thereby greatly reducing the pollution of the reflector seat caused by smoke or dust generated by the laser irradiation entering the irradiation tube, thereby effectively extending the service life of the reflector seat, extending the cleaning cycle, and further improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view of the present invention;

[0025] Figure 2 It is a front cross-sectional view of the present invention;

[0026] Figure 3 For the present invention Figure 2 Sectional view along AA;

[0027] Figure 4 This is the front view of the present invention after removing the pipeline;

[0028] Figure 5 For the present invention Figure 4 Sectional view along BB;

[0029] Figure 6 For the present invention Figure 5 Cutaway stereogram of perspective;

[0030] Figure 7 A top view of the present invention;

[0031] Figure 8 For the present invention Figure 4 Cross-sectional view and partial enlarged view of the middle edge CC.

[0032] In the figure: 1. laser cleaning machine; 2. optical fiber; 3. cleaning head; 4. connecting column; 5. moving platform; 6. pipeline; 7. hollow motor; 8. irradiation tube; 9. reflector seat; 10. connecting tube; 11. circular air box; 12. rotating box; 13. piston block; 14. push rod; 15. rotating tube; 16. outlet pipe; 17. L-shaped elbow; 18. suction pipe; 19. storage cover; 20. filter plate; 21. block; 22. cleaning brush; 23. connecting channel; 24. switching tube; 25. connecting port; 26. elastic telescopic rod; 27. guide block. 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] Embodiment 1;

[0035] See also Figures 1 to 8 The present invention provides a technical solution: a laser cleaning device, including a laser cleaning machine 1, and also including:

[0036] A cleaning head 3, the cleaning head 3 is connected to the laser cleaning machine 1 via an optical fiber 2;

[0037] The connecting tube 10 is installed on the side of the cleaning head 3, and an angle-adjustable irradiation tube 8 is installed at the end of the connecting tube 10. A reflector seat 9 for reflecting laser light is installed in the irradiation tube 8. The laser cleaning machine 1 emits laser light to the reflector seat 9 in the irradiation tube 8 through the optical fiber 2.

[0038] A hollow motor 7 is installed on the side of the cleaning head 3 and is used to rotate and adjust the connecting cylinder 10;

[0039] The mobile platform 5 can move forward and backward along the axial direction of the pipeline 6, and the cleaning head 3 is installed on the mobile platform 5 through the connecting column 4;

[0040] The air injection assembly is used to inflate air into the irradiation tube 8 and blow the air out of the irradiation tube 8.

[0041] When the laser cleaning device is in use, the cleaning head 3 is moved into the pipe 6 by using the mobile platform 5, and then the laser cleaning machine 1 is started. The laser cleaning machine 1 emits laser light into the reflector seat 9 in the irradiation tube 8 through the optical fiber 2. Under the reflection of the reflector seat 9, the laser light is tiltedly emitted from the irradiation tube 8 and irradiated into the pipe 6, and the inner wall of the pipe 6 is cleaned in coordination with the movement of the mobile platform 5.

[0042] The angle of the laser reflection can be adjusted by adjusting the angle of the irradiation tube 8 to adapt to pipes of different diameters or specifications. At the same time, the connecting tube 10 can be rotated and adjusted by the hollow motor 7 to perform 360-degree all-round cleaning of the inner wall of the pipe 6, greatly improving the work efficiency.

[0043] It is worth noting that during the laser irradiation cleaning process, the jet assembly inflates the irradiation tube 8, causing the irradiation tube 8 to blow air outward, thereby greatly reducing the smoke or dust generated by the laser irradiation from entering the irradiation tube 8 and causing pollution to the reflector seat 9, thereby effectively extending the service life of the reflector seat 9, extending the cleaning cycle, and further improving work efficiency.

[0044] In one of the more preferred embodiments, the jet assembly includes a circular air box 11 fixed to the top of the cleaning head 3, the circular air box 11 is connected to the irradiation tube 8 through an air outlet pipe 16, a rotating tube 15 is fixed to the inner wall of the circular air box 11, and a rotatable rotating box 12 is installed on the rotating tube 15, and the rotating tube 15 is eccentrically arranged with the circular air box 11, the rotating tube 15 is connected with the rotating box 12, and the end of the rotating tube 15 extending out of the circular air box 11 is connected to the air inlet that can provide clean air. The components are connected, a piston block 13 is slidably installed on the inner wall of the rotating box 12, a push rod 14 is slidably installed on the side wall of the rotating box 12, and the push rod 14 also penetrates the piston block 13 and is fixedly connected to the piston block 13, rollers are installed at both ends of the push rod 14, and the rollers are in contact with the inner wall of the circular air box 11, and the outer walls on both sides of the rotating box 12 are provided with air outlets that can exhaust one-way into the circular air box 11, and a one-way valve that allows air to be sucked into the rotating box 12 in one direction is installed in the rotating tube 15.

[0045] When using the jet assembly, refer to Figure 2-3 , the rotating box 12 is driven to rotate through the external structure, which can be driven by a motor or the like. When the rotating box 12 rotates, the piston block 13 drives the push rod 14 to rotate. Since the rotating tube 15 and the circular air box 11 are eccentrically arranged, the push rod 14 will roll and contact with the inner wall of the circular air box 11 through the roller on it while rotating. At the same time, the push rod 14 drives the piston block 13 to slide back and forth in the rotating box 12, and under the change of internal air pressure, clean air is sucked in through the air intake assembly connected to the rotating tube 15, and then discharged into the circular air box 11 from the air outlet hole on the outer wall of the rotating box 12. The air in the rotating box 12 then enters the irradiation tube 8 from the air outlet pipe 16, completing the entire jetting process to achieve the above-mentioned purpose;

[0046] It is worth mentioning that the piston block 13 can continuously inflate the rotating box 12 during its reciprocating movement, which can ensure the air intake in the rotating box 12, thereby ensuring that the irradiation tube 8 can continuously eject air, further reducing the amount of smoke and dust entering, and the inner diameter of the air outlet pipe 16 can be set to be smaller, so that the rotating box 12 can always maintain a relatively high pressure state, so that the air flow rate entering the irradiation tube 8 will be faster, and then the air flow rate ejected from the irradiation tube 8 will be faster, blowing away the smoke and dust generated by laser irradiation.

[0047] In one of the more preferred embodiments, the air intake assembly includes an L-shaped elbow 17 fixed to the top of both sides of the cleaning head 3, and the bottom ends of the two L-shaped elbows 17 are both equipped with an air intake pipe 18, and the two air intake pipes 18 face the direction of the irradiation tube 8, and the opposite ends of the two L-shaped elbows 17 are slidably mounted with a switching pipe 24, and the bottom end of the rotating tube 15 is connected to the switching pipe 24 through a flexible hose that can only be bent;

[0048] The air intake assembly also includes a filter assembly installed in the L-shaped elbow 17 for filtering the air;

[0049] The air intake assembly further includes a switching assembly for connecting the two L-shaped elbows 17 to the switching pipe 24 alternately.

[0050] When operating the air intake assembly, please refer to Figure 5 First, under the action of the switching assembly, the switching tube 24 is driven to slide in the two L-shaped elbows 17 and communicate with one of the L-shaped elbows 17. At this time, while the rotating box 12 rotates, the rotating tube 15 will inhale air through the connected L-shaped elbow 17, and the air is inhaled from the air intake pipe 18. After the impurities in the air are filtered out by the filter assembly, the clean air is inhaled into the rotating box 12, completing the air intake process;

[0051] It is worth noting that the use of a flexible hose that can only be bent to connect the rotating tube 15 and the switching tube 24 can ensure that the two can remain in a closed connection when the switching tube 24 moves. A metal bellows or the like can be used.

[0052] Moreover, since the air inlet of the air intake pipe 18 is facing the direction of the irradiation tube 8, the air intake pipe 18 can suck in the air in the pipe 6 and the mixed gas such as the generated smoke and dust, and filter it through the filter component. The purpose of such air intake is to reduce the smoke and dust filled in the pipe 6, especially when the diameter is relatively small, or one end of the pipe 6 is sealed and the air is difficult to circulate, the air intake of the air intake pipe 18 can form an internal air circulation effect in the pipe 6. On the one hand, the air jet from the irradiation tube 8 can reduce the falling of smoke and dust, and on the other hand, the air intake of the air intake pipe 18 and the filtering of the internal filter component can reduce the amount of smoke and dust in the pipe 6. In summary, the influence of smoke and dust on the reflector seat 9 in the irradiation tube 8 is further reduced.

[0053] In one of the more preferred embodiments, the switching assembly includes an elastic telescopic rod 26 rotatably mounted on the top of the cleaning head 3, and the telescopic end of the elastic telescopic rod 26 is rotatably connected to the switching tube 24, and connecting ports 25 are provided on the tops of both sides of the switching tube 24, and connecting channels 23 are provided inside the opposite ends of the two L-shaped elbows 17. When the switching tube 24 moves and extends into the L-shaped elbow 17 on one side, the connecting port 25 on the same side will be staggered with the connecting channel 23, and the connecting channel 23 on the other side will be connected with the connecting port 25;

[0054] The filter assembly includes a filter plate 20 rotatably mounted at the bend of the L-shaped elbow 17, and a torsion spring is installed at the connection between the filter plate 20 and the L-shaped elbow 17. A block 21 for blocking the filter plate 20 is fixed to the inner wall of the L-shaped elbow 17, and a rotatable cleaning brush 22 is installed on the inner wall of the L-shaped elbow 17 below the filter plate 20.

[0055] For details, please refer to Figure 5-8 ,The specific operation method of switching components is as follows;

[0056] In the initial state, under the elastic force of the elastic telescopic rod 26, the switching tube 24 moves to one side and is inserted into the L-shaped curved tube 17 on one side. At this time, the connecting port 25 and the connecting channel 23 in the switching tube 24 on the same side are staggered, while the connecting channel 23 on the other side is connected to the connecting port 25. Figure 5 , that is, whichever direction the switch tube 24 moves, the L-shaped bend tube 17 on that side will be closed, and the L-shaped bend tube 17 in the opposite direction will be connected;

[0057] Then when the rotating tube 15 inhales, air is sucked from the suction pipe 18, and then filtered by the filter plate 20 before passing through the rotating tube 15 into the rotating box 12;

[0058] Although the smoke and dust and other impurities filtered on the surface of the filter plate 20 can be cleaned by the rotation of the cleaning brush 22, long-term filtration will still cause the filter holes on the filter plate 20 to become clogged, thereby reducing the air flow of the filter plate 20. At this time, a certain negative pressure will be generated in the space between the L-shaped elbow 17 and the switching tube 24, so that the filter plate 20 overcomes the torsion force of the torsion spring and rotates. For details, please refer to Figure 5The filter plate 20 on the left side, when the filter plate 20 is blocked by the stopper 21, the filter plate 20 stops rotating, and then as the filter holes on it are further blocked, the negative pressure in the L-shaped elbow 17 is further enhanced, and the switching tube 24 starts to move toward the filter plate 20 under the action of the negative pressure. At the same time, the switching tube 24 drives the elastic telescopic rod 26 to swing. When the elastic telescopic rod 26 passes the minimum compression state, under the action of its elastic force, the switching tube 24 continues to move to the other side, so that the originally connected connecting channel 23 and the connecting port 25 are staggered with each other, and it can be known from the above content that the switching between the two L-shaped elbows 17 is completed;

[0059] After switching, the filter plate 20 loses the effect of negative pressure and returns to its original position under the torsion force of the torsion spring. When it rotates to a horizontal state again, the limited impact at the root can help to shake off the impurities thereon. When rotating, it will collide with the cleaning brush 22, which can further improve the cleaning effect of filtering impurities. Moreover, under the rotation of the cleaning brush 22, the filter plate 20 will jump, so that the filter plate 20 can be deeply cleaned after switching so as to be used for filtering after the next switching.

[0060] In this way, the two L-shaped elbows 17 can be automatically switched by the filtering blockage of the filter plate 20, thereby ensuring continuous air suction of the air suction pipe 18.

[0061] It is worth noting that the inner diameter between the connecting channel 23 and the communicating port 25 can be set according to actual conditions to minimize the impact on negative pressure generated in the L-shaped elbow 17.

[0062] In one of the more preferred embodiments, a detachable material storage cover 19 is installed at the bottom of the connection between the L-shaped elbow 17 and the air intake pipe 18, and the material storage cover 19 is lower than the inner wall of the air intake pipe 18.

[0063] As can be seen from the above content, the cleaning brush 22 in the L-shaped elbow 17 after switching deeply cleans the filter plate 20, and since the suction pipe 18 no longer sucks air at this time, the impurities and dust dropped by the cleaning will fall into the storage cover 19 below for collection, and the storage cover 19 is set lower than the inner wall of the suction pipe 18, which can be seen in FIG. Figure 6 In this way, the suction pipe 18 will not affect the dust in the storage cover 19 when sucking air.

[0064] Embodiment 2 is basically the same as Embodiment 1, except that a second implementation of the air intake assembly is provided;

[0065] In one of the more preferred embodiments, the air intake assembly includes an air intake pipe connected to the rotating tube 15, and the air intake pipe is connected to an external air purifier.

[0066] When the rotating tube 15 inhales air, air can be directly inhaled through the intake pipe connected thereto, and the inhaled air is purified by the purification effect of the external air purifier. This embodiment is more suitable for use in a pipe 6 with a larger diameter, that is, a pipe 6 with easy air circulation.

[0067] In one of the more preferred embodiments, a guide block 27 is installed on the inner wall of the irradiation tube 8 to guide the air and make the air spray out from the irradiation tube 8 at an angle.

[0068] For details, please refer to Figure 2 By setting the guide block 27, the air entering the irradiation tube 8 from the outlet pipe 16 can be guided, and the air can be sprayed out from the irradiation tube 8 at an angle. The purpose of this is to facilitate the blowing of the generated smoke and smoke to a distance, and to reduce the amount of smoke remaining in the distance as much as possible, thereby further reducing the impact of smoke on the equipment in the irradiation tube 8.

[0069] In one of the more preferred embodiments, a driving motor for driving the rotating box 12 to rotate is installed on the top of the circular air box 11.

[0070] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0071] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser cleaning device, comprising a laser cleaning machine (1), characterized in that: Also includes: A cleaning head (3), wherein the cleaning head (3) is connected to the laser cleaning machine (1) via an optical fiber (2); A connecting tube (10) is mounted on the side of the cleaning head (3), and an angle-adjustable irradiation tube (8) is mounted on the end of the connecting tube (10). A reflector seat (9) for reflecting laser light is mounted inside the irradiation tube (8). The laser cleaning machine (1) emits laser light onto the reflector seat (9) inside the irradiation tube (8) through an optical fiber (2); A hollow motor (7) mounted on the side of the cleaning head (3) and used for rotating and adjusting the connecting cylinder (10); The mobile platform (5) is movable forward and backward along the axial direction of the pipeline (6), and the cleaning head (3) is mounted on the mobile platform (5) via a connecting column (4); An air injection assembly, used for inflating air into the irradiation tube (8) and blowing the air out from the irradiation tube (8); The jet assembly comprises a circular air box (11) fixed on the top of the cleaning head (3); the circular air box (11) is connected to the irradiation tube (8) via an air outlet pipe (16); a rotating tube (15) is fixed to the inner wall of the circular air box (11); a rotatable rotating box (12) is mounted on the rotating tube (15); the rotating tube (15) and the circular air box (11) are eccentrically arranged; the rotating tube (15) is connected to the rotating box (12); and the end of the rotating tube (15) extending out of the circular air box (11) is connected to an air intake assembly capable of providing clean air. A piston block (13) is slidably mounted on the inner wall of the rotating box (12), a push rod (14) is slidably mounted on the side wall of the rotating box (12), and the push rod (14) also penetrates the piston block (13) and is fixedly connected to the piston block (13), rollers are mounted on both ends of the push rod (14), and the rollers are in contact with and abut against the inner wall of the circular air box (11), the outer walls on both sides of the rotating box (12) are provided with air outlet holes that can exhaust air one-way into the circular air box (11), and a one-way valve that allows air to be sucked into the rotating box (12) one-way is installed in the rotating tube (15).

2. The laser cleaning device according to claim 1, characterized in that: The air intake assembly comprises an L-shaped curved pipe (17) fixed to the top of both sides of the cleaning head (3), the bottom ends of the two L-shaped curved pipes (17) are both equipped with an air suction pipe (18), and the two air suction pipes (18) face the direction of the irradiation tube (8), and the opposite ends of the two L-shaped curved pipes (17) are slidably mounted with a switching pipe (24), and the bottom end of the rotating pipe (15) is connected to the switching pipe (24) through a flexible pipe that can only be bent; The air intake assembly further comprises a filter assembly installed in the L-shaped elbow (17) for filtering air; The air intake assembly also includes a switching assembly, which is used to enable the two L-shaped bent pipes (17) to be alternately connected to the switching pipe (24).

3. The laser cleaning device according to claim 2, characterized in that: The switching assembly comprises an elastic telescopic rod (26) rotatably mounted on the top of the cleaning head (3), and the telescopic end of the elastic telescopic rod (26) is rotatably connected to the switching tube (24), and the tops of both sides of the switching tube (24) are provided with connecting ports (25), and the opposite ends of the two L-shaped curved tubes (17) are provided with connecting channels (23) inside, and when the switching tube (24) moves and extends into the L-shaped curved tube (17) on one side, the connecting port (25) on the same side will be offset from the connecting channel (23), while the connecting channel (23) on the other side is connected to the connecting port (25); The filter assembly comprises a filter plate (20) rotatably mounted at the bend of an L-shaped curved pipe (17), a torsion spring being mounted at the connection between the filter plate (20) and the L-shaped curved pipe (17), a stopper (21) being fixed to the inner wall of the L-shaped curved pipe (17) for blocking the filter plate (20), and a rotatable cleaning brush (22) being mounted on the inner wall of the L-shaped curved pipe (17) below the filter plate (20).

4. The laser cleaning device according to claim 3, characterized in that: A detachable material storage cover (19) is installed at the bottom of the connection between the L-shaped curved pipe (17) and the air intake pipe (18), and the material storage cover (19) is lower than the inner wall of the air intake pipe (18).

5. The laser cleaning device according to claim 1, characterized in that: The air intake assembly comprises an air intake pipe connected to the rotating pipe (15), and the air intake pipe is connected to an external air purifier.

6. The laser cleaning device according to any one of claims 1 to 5, characterized in that: A guide block (27) is installed on the inner wall of the irradiation tube (8) for guiding the air and causing the air to be ejected obliquely from the irradiation tube (8).

7. The laser cleaning device according to claim 1, characterized in that: A driving motor for driving the rotating box (12) to rotate is installed on the top of the circular air box (11).

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