A high-efficiency rust removal device and method for vertical shot blasting of a steel pipe

Abstract

The application discloses a kind of vertical steel tube shot blasting high-efficiency derusting device and method, it is related to steel tube rust removal technical field;And the both ends of the processing box are provided with mouth and the mouth is equipped with protective curtain, the outer wall of the processing box is provided with rack, the end of the rack is rotationally provided with conveying roller, the end of the rack is close to the end of processing box and is located inside the processing box It is equipped with driving roller, the driving roller is inclined as a whole, the middle end of the processing box is fixedly installed with outer cover, the outer cover is installed with thrower, the output of the thrower is vertically opposite pipe fitting;In the application, inclined driving roller is matched with liftable down pressure roller, height is adjusted quickly by air cylinder to adapt to different pipe diameters, and adjusting screw is used to fine-tune and compensate roundness error of steel pipe, without stopping production, it is widely applicable, and production efficiency is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of steel pipe rust removal technology, specifically to a high-efficiency vertical shot blasting rust removal device and method for steel pipes. Background Technology

[0002] In the production of insulated steel pipes, rust removal is a key preliminary process to ensure product quality and improve efficiency. Currently, shot blasting machines are commonly used to remove rust from steel pipes. Currently, traditional equipment uses V-shaped rollers for conveying steel pipes, allowing the pipes to rotate during feeding to improve the thoroughness of rust removal. However, with traditional V-shaped roller conveying, the steel pipes need to be matched with the V-groove. When changing to different pipe diameters, it is usually necessary to change the rollers or use adjustable-pitch V-shaped seats, which requires stopping the machine for adjustment, reducing efficiency. Furthermore, the pipes are only supported by the lower V-groove without being clamped from above, making high-speed or thin-walled pipes prone to jumping, slipping, and deviation. Meanwhile, in traditional shot blasting machines, the shot falls directly into the bottom hopper, causing impurities to mix with the shot, resulting in high screening pressure and affecting the stability of the conveying process. To address the aforementioned problems, the inventors have proposed a high-efficiency vertical shot blasting device and method for removing rust from steel pipes. Summary of the Invention

[0003] To address the aforementioned problems, the present invention aims to provide a high-efficiency vertical shot blasting rust removal device and method for steel pipes.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: a high-efficiency shot blasting rust removal device, comprising a treatment box, with openings at both ends of the treatment box and protective curtains installed on the openings; a frame is provided on the outer wall of the treatment box; a conveying roller is rotatably mounted at the end of the frame; drive rollers are installed on the frame near the end of the treatment box and inside the treatment box; the drive rollers are inclined at an angle of 5°–15°; an outer cover is fixedly installed at the bottom of the middle end inside the treatment box; a shot blaster is installed inside the outer cover; the output end of the shot blaster is vertically aligned with the pipe fitting; and a protective filter is provided inside the treatment box at the location of the outer cover. The middle plate and the protective concentration plate are inclined. A recycling hopper is provided at the bottom of the inclined end of the protective concentration plate. A mounting frame is movably inserted into the top of the recycling hopper and a screen is provided in the mounting frame. A spiral conveyor blade is rotatably provided at the bottom of the recycling hopper. The spiral conveyor blade is driven by an external servo motor. A horizontally arranged connecting plate is installed at the top of the processing box. Three equally spaced downward pressure rollers are provided at the bottom of the connecting plate. A vertically arranged partition is fixed in the processing box. A protective curtain is provided on the partition. A brush plate is rotatably arranged above another space in the processing box through the partition.

[0005] Preferably, a bucket elevator is installed on the outside of the processing box. The bottom of the bucket elevator is connected to the output port of the recovery bucket, and a shot separator is installed at the top output port of the bucket elevator. The shot separator is connected to the input end of the shot blaster. The shot blaster, the spiral recovery bucket, the bucket elevator, and the shot separator form a closed loop linkage to ensure a continuous and stable supply of shot.

[0006] Preferably, the ends of the drive roller 13 are connected by a transmission component, and the ends of the conveying roller and the drive roller 13 are both driven by a servo motor. The servo motors of the conveying roller and the drive roller 13 can be mounted on the frame.

[0007] Preferably, a fixing plate is provided on the lower surface of the connecting plate near each lower pressure roller. The fixing plate is generally inverted U-shaped. The two ends of the lower pressure roller are rotatably mounted on the fixing plate through bearings. A first cylinder is fixedly mounted on the upper surface of the outer wall of the processing box near the connecting plate, and the output end of the first cylinder is coaxially fixedly mounted on the connecting plate. An adjusting screw is rotatably mounted on the middle end of the upper surface of the fixing plate. The top of the adjusting screw is threaded into the fixing plate and penetrates the processing box. An adjusting wheel is fixedly mounted on the top of the adjusting screw. Vertically positioned limiting rods are fixedly mounted on both ends of the connecting plate, and the tops of the limiting rods penetrate the processing box.

[0008] Preferably, a soft brush is provided on the lower surface of the brush plate, and a bracket with the same shape as the fixed plate is provided above the brush plate. The brush plate is rotatably mounted on the bracket, and a drive motor is mounted on the brush plate. The output end of the drive motor is coaxially fixedly connected to the brush plate. A second cylinder is fixedly mounted on the top of the processing box, and the output end of the second motor is coaxially fixedly mounted on the bracket. A collection frame is installed inside the processing box below the brush plate.

[0009] Preferably, movable rods are fixedly installed at both ends of the mounting frame, and the movable rods pass through the processing box. A movable plate is fixedly installed at the outer end of the movable rod located in the processing box. A rectangular groove is opened on the movable plate, and two diagonally arranged arc-shaped grooves are opened on the rectangular groove. A Y-shaped push block is rotatably installed in the rectangular groove, and the end of the push block abuts against the side wall of the rectangular groove. A rotating shaft is fixedly installed at the middle end of the push block. A support plate is fixedly installed on the outer wall of the processing box near the rotating shaft, and the rotating shaft is rotatably inserted into the support plate. A drive motor is fixedly installed on the support plate, and the output end of the drive motor is coaxially fixedly installed on the rotating shaft.

[0010] Preferably, both the conveying roller and the drive roller are coated with rubber.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this invention, an inclined drive roller is used in combination with a liftable lower pressure roller. The height can be quickly adjusted by a cylinder to adapt to different pipe diameters. The adjustment screw is used to finely adjust and compensate for the roundness error of the steel pipe. There is no need to stop the machine to change parts. It has a wide range of applications and effectively improves production efficiency. 2. This device uses inclined drive rollers to achieve synchronous conveying and rotation of pipes, and works in conjunction with the radial pressing and limiting of the lower pressure rollers to form a two-way constraint, ensuring smooth pipe operation, reducing and eliminating problems such as deviation, slippage, and jumping, ensuring uniform rust removal, and is suitable for processing various pipe diameters and thin-walled pipes. 3. An automatic brush cleaning mechanism is added to this invention. After shot blasting, the cylinder drives the brush to rotate at high speed against the pipe, automatically cleaning the surface of residual rust residue and fine impurities. The residue falls into the collection box and is collected, improving the cleanliness of the pipe surface, reducing the amount of manual cleaning, and keeping the working environment clean. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the support structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the processing box of the present invention; Figure 4 This is a schematic diagram of the outer casing structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a schematic diagram of the connecting plate structure of the present invention; Figure 7 This is a schematic diagram of the support structure of the present invention.

[0014] In the diagram: 1. Processing box; 11. Frame; 12. Conveyor roller; 13. Drive roller; 14. Transmission component; 2. Outer cover; 21. Shot blaster; 211. Protective concentrator plate; 22. Recovery hopper; 23. Spiral conveyor blade; 24. Mounting frame; 25. Screen; 26. Movable rod; 27. Movable plate; 28. Rectangular groove; 29. ​​Arc groove; 3. Push block; 31. Rotating shaft; 4. Connecting plate; 41. First cylinder; 42. Fixed plate; 43. Lower pressure roller; 44. Adjusting screw; 5. Brush plate; 51. Support; 52. Second cylinder; 53. Collection frame; 54. Partition plate. Detailed Implementation

[0015] 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] like Figure 1-7 As shown, this invention provides a high-efficiency vertical shot blasting rust removal device for steel pipes, including a treatment box 1. The treatment box 1 has openings at both ends, and protective curtains are installed on the openings. A frame 11 is installed on the outer wall of the treatment box 1. A conveying roller 12 is rotatably mounted at the end of the frame 11. Drive rollers 13 are installed on the frame 11 near the end of the treatment box 1 and inside the treatment box 1. The drive rollers 13 are inclined at an angle of 5°–15°. An outer cover 2 is fixedly installed at the bottom of the middle end inside the treatment box 1. A shot blaster 21 is installed inside the outer cover 2. The output end of the shot blaster 21 is vertically aligned with the pipe, and the shot blasting direction of the shot blaster 21 forms a 90° angle with the direction of travel of the steel pipe. A [missing information - likely a device or equipment] is installed inside the treatment box 1 at the location of the outer cover 2. The protective concentrator 211 is inclined, and a recycling hopper 22 is provided at the bottom of the inclined end of the protective concentrator 211. A mounting frame 24 is movably inserted into the top of the recycling hopper 22, and a screen 25 is provided inside the mounting frame 24. A spiral conveyor blade 23 is rotatably provided at the bottom of the recycling hopper 22. The spiral conveyor blade 23 is driven by an external servo motor. A horizontally arranged connecting plate 4 is installed at the top of the processing box 1. Three equally spaced lower pressure rollers 43 are provided at the bottom of the connecting plate 4. A vertically arranged partition 54 is fixed inside the processing box 1. A protective curtain is provided on the partition 54. A brush plate 5 is rotatably arranged above another space inside the processing box 1 through the partition 54.

[0017] A bucket elevator is installed on the outside of the processing box 1. The bottom of the bucket elevator is connected to the output port of the recovery bucket 22. A shot separator is installed at the top output port of the bucket elevator. The shot separator is connected to the input end of the shot blaster 21. The shot blaster 21, the spiral recovery bucket 22, the bucket elevator and the shot separator form a closed loop linkage to ensure a continuous and stable supply of shot.

[0018] The ends of the drive roller 13 are connected by a transmission component 14. The transmission component 14 can be driven by a sprocket and chain, or by a toothed synchronous pulley and synchronous belt. The ends of the conveyor roller 12 and the drive roller 13 are driven by a servo motor. The servo motors of the conveyor roller 12 and the drive roller 13 can be mounted on the frame 11.

[0019] By adopting the above technical solution, it is ensured that the drive rollers 13 rotate together.

[0020] A fixing plate 42 is provided on the lower surface of the connecting plate 4 near each lower pressure roller 43. The fixing plate 42 is in the shape of an inverted U. The two ends of the lower pressure roller 43 are rotatably mounted on the fixing plate 42 through bearings. A first cylinder 41 is fixedly mounted on the upper surface of the outer wall of the processing box 1 near the connecting plate 4, and the output end of the first cylinder 41 is coaxially fixed on the connecting plate 4.

[0021] By adopting the above technical solution, when encountering steel pipes with larger or smaller diameters, the first cylinder 41 can drive the lower pressure roller 43 to complete the adaptation adjustment, so as to adapt to steel pipes with different diameters.

[0022] An adjusting screw 44 is rotatably installed at the middle end of the upper surface of the fixing plate 42. The top of the adjusting screw 44 is threaded into the fixing plate 42 and passes through the processing box 1. An adjusting wheel is fixedly installed at the top of the adjusting screw 44. Vertically installed limiting rods are fixedly installed at both ends of the connecting plate 4, and the top of the limiting rods passes through the processing box 1.

[0023] By adopting the above technical solution, the fixed plate 42 can be vertically adjusted by the separately set adjustment screw 44. In this way, the single roller fine adjustment function can compensate for the roundness error of the steel pipe and ensure that the lower pressure roller 43 is in uniform contact with the steel pipe, avoiding local slippage or deformation.

[0024] A soft brush is provided on the lower surface of the brush plate 5. A bracket 51 with the same shape as the fixed plate 42 is provided above the brush plate 5. The brush plate 5 is rotatably mounted on the bracket 51. A drive motor is installed on the brush plate 5, and the output end of the drive motor is coaxially fixedly connected to the brush plate 5. A second cylinder 52 is fixedly installed on the top of the processing box 1, and the output end of the second motor is coaxially fixedly mounted on the bracket 51. A collection frame 53 is installed inside the processing box 1 below the brush plate 5.

[0025] By adopting the above technical solution, the second cylinder 52 directly controls the brush plate 5 to move down and contact the steel pipe to be shot blasted and rusted. The drive motor on the brush plate 5 will directly drive the brush plate 5 to rotate. At this time, the brush plate 5 will directly clean the residue remaining on the surface of the steel pipe and clean it into the collection box 53 below, so that it can be collected and transported by the staff in a unified manner.

[0026] Movable rods 26 are fixedly installed at both ends of the mounting frame 24, and the movable rods 26 penetrate the processing box 1. A movable plate 27 is fixedly installed at one end of the movable rod 26 outside the processing box 1. A rectangular groove 28 is opened on the movable plate 27, and two diagonally arranged arc grooves 29 are opened on the rectangular groove 28. A Y-shaped push block 3 is rotatably installed inside the rectangular groove 28, and the end of the push block 3 abuts against the side wall of the rectangular groove 28.

[0027] By adopting the above technical solution, the pusher block 3 can drive the movable plate 27 to rotate back and forth repeatedly, thereby causing the movable plate 27 to drive the mounting frame 24 and the screen 25 to shake, thus completing the screening operation.

[0028] A rotating shaft 31 is fixedly installed at the middle end of the push block 3. A support plate is fixedly installed on the outer wall of the processing box 1 near the rotating shaft 31, and the rotating shaft 31 is rotatably inserted into the support plate. A drive motor is fixedly installed on the support plate, and the output end of the drive motor is coaxially fixed on the rotating shaft 31.

[0029] By adopting the above technical solution, the drive motor can directly control the rotation of the rotating shaft 31, thereby driving the top push block 3 to rotate rapidly, which is convenient for the staff to operate.

[0030] Both the conveyor roller 12 and the drive roller 13 are coated with rubber.

[0031] By adopting the above technical solutions, the roller surface is coated with anti-slip structures such as polyurethane / rubber to improve friction.

[0032] Working principle: During use, the steel pipes to be shot-blasted are placed on the conveyor roller 12 and drive roller 13. Due to the inclined setting of the drive roller 13, when it rotates actively, the friction between the rubber coating on the drive roller 13 and the pipe is decomposed into two components: an axial component and a circumferential component. The axial component pushes the pipe forward, while the circumferential component causes the pipe to rotate around its own axis. At this time, the steel pipe on the drive roller 13 is being conveyed and rotating on its own. Meanwhile, the lower pressure roller 43 above the processing box 1 provides radial clamping force, ensuring sufficient friction between the steel pipe and the lower pressure roller 43 to prevent slippage, and also restraining the steel pipe to prevent jumping or deviation. Simultaneously, the vertical height adjustment of the connecting plate 4 can be controlled by starting the first cylinder 41. In this way, the connecting plate 4 will directly control the vertical height adjustment of the lower pressure roller 43 set below. When encountering steel pipes with larger or smaller diameters, the lower pressure roller 43 can be directly driven by the first cylinder 41 to complete the adaptation adjustment, so that it can adapt to steel pipes of different diameters. In addition, the fixed plate 42 can be vertically adjusted by the separately set adjustment screw 44. In this way, the single roller fine adjustment function can compensate for the roundness error of the steel pipe, ensure that the lower pressure roller 43 and the steel pipe are in uniform contact, and avoid local slippage or deformation. Through the above operation, the adjustment operation can be completed quickly without excessive complex adjustment, adapting to pipes of different diameters. At the same time, the shot blaster 21 inside the outer casing 2 is activated. The shot blaster 21 will discharge steel shot through the output end. The shot blasting direction of the shot blaster 21 is at a 90° angle with the direction of travel of the steel pipe. The axial angle is precisely adjusted to prevent the accumulation of shot. The horizontally corresponding arrangement achieves full cross-section coverage of the shot blasting zone, ensuring that the rust removal effect fully meets the standards. After the steel shot is discharged, when it falls again from above, the secondary rebound shot will directly hit the surface of the steel pipe again, completing the secondary shot blasting rust removal operation and improving the efficiency of shot blasting rust removal. As the steel pipe is conveyed forward, the steel pipe will move to the bottom of the brush plate 5. The second cylinder 52 directly controls the brush plate 5 to move down and contact the steel pipe to be shot blasted. The drive motor set on the brush plate 5 will directly drive the brush plate 5 to rotate. At this time, the brush plate 5 will directly clean the residue remaining on the surface of the steel pipe and clean it into the collection box 53 below, which is convenient for subsequent staff to collect and transport directly. When the shot blasting machine 21 is in operation, the steel shot falls downwards and is collected into the recovery hopper 22 by the inclined protective concentrator plate 211. A screen 25 is installed at the upper end of the recovery hopper 22, and a movable plate 27 is installed outside the screen 25. The drive motor below the movable plate 27 drives the rotating shaft 31 to rotate. The push block 3 fixedly installed at the top of the rotating shaft 31 rotates. One end of the push block 3 will first abut against the side wall of the rectangular groove 28. At this time, the movable plate 27 will be driven to move towards the side in contact with the rectangular groove 28. After the end of the push block 3 moves into the arc groove 29, the other end of the push block 3 will abut against the other end of the rectangular groove 28. Upon contact, the movable plate 27 is pushed back and forth. The movable plate 27 will repeatedly move back and forth, and the movable plate 27 will drive the mounting frame 24 to move through the movable rod 26. This will cause the screen 25 inside the mounting frame 24 to shake, screening the steel shot in the screen 25 that has fallen. Larger impurities will be screened. The steel shot will be sent into the bucket elevator along the bottom spiral conveyor blade 23, and then sent into the shot blaster 21 after being finely screened by the shot separator. This ensures a continuous and stable supply of shot. Through the above operations, the initial separation of shot and impurities is achieved in advance, reducing the pressure on the subsequent screening system, improving the purity of shot recovery, and ensuring the overall practicality of the device.

[0033] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A high-efficiency vertical shot blasting rust removal device for steel pipes, comprising a treatment box (1), characterized in that: The processing box (1) has openings at both ends, and protective curtains are installed on the openings. A frame (11) is installed on the outer wall of the processing box (1). A conveying roller (12) is rotatably installed at the end of the frame (11). A drive roller (13) is installed on the frame (11) near the end of the processing box (1) and inside the processing box (1). The drive roller (13) is inclined as a whole, and the inclination angle is 5°–15°. An outer cover (2) is fixedly installed at the bottom of the middle end inside the processing box (1). A shot blaster (21) is installed inside the outer cover (2). The output end of the shot blaster (21) is vertically facing the pipe. A protective concentrator plate (211) is installed inside the processing box (1) at the outer cover (2), and the protective concentrator plate (211) is inclined. A recycling hopper (22) is provided at the bottom of the inclined end of the protective concentrator plate (211). A mounting frame (24) is movably inserted into the top of the recycling hopper (22), and a screen (25) is provided inside the mounting frame (24). A spiral conveyor blade (23) is rotatably provided at the bottom of the recycling hopper (22). The spiral conveyor blade (23) is driven by an external servo motor. A horizontally arranged connecting plate (4) is installed at the top of the processing box (1). Three equally spaced downward pressure rollers (43) are provided at the bottom of the connecting plate (4). A vertically arranged partition (54) is fixed inside the processing box (1). A protective curtain is provided on the partition (54). A brush plate (5) is rotatably arranged above another space inside the processing box (1) through the partition (54).

2. The high-efficiency vertical shot blasting rust removal device for steel pipes as described in claim 1, characterized in that, A bucket elevator is installed on the outside of the processing box (1). The bottom of the bucket elevator is connected to the output port of the recovery bucket (22). A shot separator is installed at the top output port of the bucket elevator. The shot separator is connected to the input end of the shot blaster (21).

3. The high-efficiency vertical shot blasting rust removal device for steel pipes as described in claim 2, characterized in that, The ends of the drive roller (13) are connected by a transmission component (14), and the ends of the conveying roller (12) and the drive roller (13) are both driven by a servo motor.

4. The high-efficiency vertical shot blasting rust removal device for steel pipes as described in claim 3, characterized in that, A fixing plate (42) is provided on the lower surface of the connecting plate 4 near each lower roller 43. The fixing plate (42) is in the shape of an inverted U. The two ends of the lower roller (43) are rotatably mounted on the fixing plate (42) through bearings. A first cylinder (41) is fixedly mounted on the upper surface of the outer wall of the processing box (1) near the connecting plate (4), and the output end of the first cylinder (41) is coaxially fixed on the connecting plate (4).

5. The high-efficiency vertical shot blasting rust removal device for steel pipes as described in claim 4, characterized in that, An adjusting screw (44) is rotatably provided at the middle end of the upper surface of the fixing plate (42). The top of the adjusting screw (44) is threaded into the fixing plate (42) and passes through the processing box (1). An adjusting wheel is fixedly provided at the top of the adjusting screw (44). Vertically arranged limiting rods are fixedly provided at both ends of the connecting plate (4) and the top of the limiting rods passes through the processing box (1).

6. The high-efficiency vertical shot blasting rust removal device for steel pipes as described in claim 5, characterized in that, A soft brush is provided on the lower surface of the brush plate (5). A bracket (51) with the same shape as the fixed plate (42) is provided above the brush plate (5). The brush plate (5) is rotatably mounted on the bracket (51). A drive motor is installed on the brush plate (5), and the output end of the drive motor is coaxially fixedly connected to the brush plate (5). A second cylinder (52) is fixedly installed on the top of the processing box (1), and the output end of the second motor is coaxially fixedly mounted on the bracket (51). A collection frame (53) is installed inside the processing box (1) below the brush plate (5).

7. The high-efficiency vertical shot blasting rust removal device for steel pipes as described in claim 6, characterized in that, Movable rods (26) are fixedly installed at both ends of the mounting frame (24), and the movable rods (26) penetrate the processing box (1). A movable plate (27) is fixedly installed at one end of the movable rod (26) outside the processing box (1). A rectangular groove (28) is opened on the movable plate (27). Two diagonally arranged arc grooves (29) are opened on the rectangular groove (28). A Y-shaped push block (3) is rotatably arranged inside the rectangular groove (28), and the end of the push block (3) abuts against the side wall of the rectangular groove (28).

8. The high-efficiency vertical shot blasting rust removal device for steel pipes as described in claim 7, characterized in that, The middle end of the push block (3) is fixedly provided with a rotating shaft (31). The outer wall of the processing box (1) is fixedly provided with a support plate near the rotating shaft (31), and the rotating shaft (31) is rotatably inserted on the support plate. The support plate is fixedly provided with a drive motor, and the output end of the drive motor is coaxially fixed on the rotating shaft (31).

9. The high-efficiency vertical shot blasting rust removal device for steel pipes as described in claim 8, characterized in that, Both the conveying roller (12) and the drive roller (13) are coated with rubber.

10. The method of using the high-efficiency vertical shot blasting rust removal device for steel pipes as described in claims 1-9 includes the following steps: S1. Adjust the equipment according to the diameter and roundness parameters of the steel pipe. Adjust the height of the lower pressure roller with the first cylinder to match the pipe specifications, and then use the adjusting screw to finely adjust and compensate for the roundness error. S2. Place the steel pipe on the conveying roller and the drive roller, start the drive roller, and rely on the component force of friction to drive the steel pipe to move forward and rotate, and cooperate with the radial clamping force of the lower pressure roller to constrain the pipe. S3. After rust removal, the pipe is transported to the bottom of the brush plate. The second cylinder lowers the brush to fit the pipe. The motor is started to drive the brush to rotate at high speed, cleaning the residual residue and impurities on the surface. The waste falls into the collection box for centralized collection.

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