A steel pipe surface treatment device

Abstract

This invention discloses a steel pipe surface treatment device, relating to the field of steel pipe surface cleaning technology. Its key features include a processing table, a sliding assembly mounted on the top of the processing table, a rotary drive component mounted on the sliding end of the sliding assembly, a rotating component mounted on the output end of the rotary drive component, a cleaning debris collection component mounted on the rotating end of the rotating component, a rotating shaft mounted on one end of the rotating component, and multiple cleaning components spirally spaced on the outer wall of the rotating shaft. A secondary extension component is provided on the inner side of each cleaning component. Each cleaning component includes a first extension arm slidably mounted on the outer wall of the rotating shaft, and a central rotating rod rotatably mounted at the axis of the rotating shaft. The technical advantage is that centrifugal force is used to centrifugally throw out the first and second extension arms, achieving matching with the inner diameter of the cleaned pipe wall. The secondary extension design expands its applicability, allowing for cleaning of the inner walls of steel pipes with different inner diameters.

Description

Technical Field

[0001] This invention relates to the field of steel pipe surface cleaning technology, specifically to a steel pipe surface treatment device. Background Technology

[0002] Steel pipe production, as an important part of modern manufacturing, demonstrates a high degree of technological integration and exquisite craftsmanship. Starting with material selection, high-quality steel billets undergo strict quality inspection before entering the production line. Under advanced hot rolling or cold rolling processes, the steel billets are shaped into preliminary tubular forms. Subsequently, through precise sizing, straightening, and cutting processes, each steel pipe is given accurate dimensions and a perfect appearance.

[0003] After the steel billet is formed, there will be some oxide layer and particulate matter on the outer and inner walls of the steel pipe. These oxide layer and particulate matter will form protrusions on the outer and inner walls of the steel pipe. During the subsequent galvanizing process, the inner and outer wall surfaces of the steel pipe need to be cleaned to ensure the smoothness of the inner and outer walls of the steel pipe.

[0004] During the cleaning process of the inner wall of steel pipes, in order to ensure that the cleaning brush can better adhere to the inner wall of the steel pipe, it is necessary to equip the cleaning brush with cleaning brushes of various inner diameters to clean the inner walls of steel pipes of different diameters. At the same time, the oxide layer and particulate debris after cleaning will remain on the inner wall of the steel pipe, and workers need to further remove the oxide layer and particulate debris before the subsequent galvanizing process can be carried out, which reduces the production speed of galvanized steel pipes. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a steel pipe surface treatment device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a steel pipe surface treatment device, comprising a processing table, a sliding assembly installed at the top of the processing table, a rotary drive component installed at the sliding end of the sliding assembly, a rotary component installed at the output end of the rotary drive component, a cleaning debris collection component provided at the rotating end of the rotary component, a rotating shaft installed at one end of the rotary component, a plurality of cleaning components spirally spaced on the outer wall of the rotating shaft, and a secondary extension component provided on the inner side of the cleaning components;

[0007] The cleaning component includes a first extension arm slidably disposed on the outer wall of a rotating shaft. A pivot rod is rotatably mounted at the axis of the rotating shaft. A torsion spring is sleeved at both ends of the outer wall of the pivot rod. A guide slide rod is fixed at one end of each side of the first extension arm. A preliminary winding and unwinding pull rope is wound around the outer wall of the pivot rod at the corresponding position of the first extension arm. The movable end of the preliminary winding and unwinding pull rope is fixedly connected to the first extension arm.

[0008] The secondary extension component includes a second extension arm slidably disposed inside the first extension arm. Utilizing the design of the first and second extension arms, centrifugal force can be used during the rotational cleaning process to centrifugally throw out the first and second extension arms, achieving matching with the inner diameter of the cleaning tube wall. The secondary extension design enhances its applicability. A retractable lever is rotatably installed at the inner end of the first extension arm. A torsion spring is sleeved on one end of the outer wall of the retractable lever. A secondary retractable pull rope is wound around the middle of the outer wall of the retractable lever. The movable end of the secondary retractable pull rope is fixedly connected to the second extension arm. Guide slide rods are fixed to one end of both sides of the second extension arm. A cleaning brush head is installed at one end of the second extension arm.

[0009] A fan blade is fixedly installed at one end of the rotating shaft, and a conical surface is opened at one end of the outer wall of the rotating shaft. During the rotation of the rotating shaft, wind force is generated from the fan blade to blow the cleaned debris to one side, thereby achieving timely treatment of the cleaned pipe wall.

[0010] Preferably, the sliding assembly includes a sliding base mounted on the top of the processing table, a sliding motor mounted on one end of the sliding base, a lead screw rotatably mounted on the inner center of the sliding base, guide rods symmetrically mounted on the inner side of the sliding base and on both sides of the lead screw, the outer walls of the two guide rods together slidingly mounting the sliding base, the lead screw being threadedly connected to the sliding base, and one end of the lead screw being fixedly connected to the output end of the sliding motor.

[0011] Preferably, the rotary drive component includes a rotary motor mounted on one side of the top of the slide base, a drive pulley mounted on the output end of the rotary motor, a rotary support base mounted at the center of the top of the slide base, a rotary rod rotatably mounted on the inner side of the rotary support base, a driven pulley mounted on the outer wall of the rotary rod at a position corresponding to the rotary support base, a belt sleeved on the outer walls of the driven pulley and the drive pulley, and a rotary shaft fixedly mounted at one end of the rotary rod. The rotation of the rotary rod provides centrifugal force, thereby achieving the cleaning of the inner wall of the steel pipe body.

[0012] Preferably, the two ends of the torsion spring are fixedly connected to the rotating shaft and the central rotating rod, respectively. The rotating shaft has a winding hole for use with the initial winding and unwinding of the rope, and the rotating shaft also has a guide groove for use with the guide slide rod.

[0013] Preferably, the two ends of the second torsion spring are fixedly connected to the retracting and extending rod and the first extension arm, respectively, and the inner side of the first extension arm is provided with a second guide groove that works in conjunction with the second guide slide rod.

[0014] Preferably, both the first and second extension arms are arc-shaped, designed to slide outwards in coordination with centrifugal force.

[0015] Preferably, the cleaning debris collection component includes a fixed turntable installed on one side of the outer wall of the rotating rod, a sliding pressure plate slidably sleeved on the outer wall of the rotating shaft, a plurality of cleaning debris collection inlets on one side of the sliding pressure plate, and a debris collection net bag provided on the other side of the sliding pressure plate at the location corresponding to the cleaning debris collection inlets. A pressure spring is sleeved on the outer wall of the rotating rod between the fixed turntable and the sliding pressure plate.

[0016] Preferably, the two ends of the pressure spring are fixedly connected to the fixed turntable and the sliding pressure plate, respectively, to tightly fit the sliding pressure plate with one end of the steel pipe body, thereby preventing debris from falling off.

[0017] Compared with the prior art, the present invention provides a steel pipe surface treatment device, which has the following beneficial effects:

[0018] 1. By setting up cleaning components and secondary extension components, the first and second extension arms are centrifugally thrown out using centrifugal force, achieving matching with the inner diameter of the cleaning pipe wall. The secondary extension design improves its applicability and can achieve cleaning of the inner wall of steel pipes with different inner diameters.

[0019] 2. By setting fan blades, the airflow generated at the fan blades blows the cleaned debris to one side, achieving timely treatment of the cleaned pipe wall and preventing excessive debris residue inside the pipe wall. The conical design reduces the obstruction of the generated airflow and better guides the airflow towards the pipe wall, thus smoothly blowing the debris to one side of the steel pipe body. In addition, the first and second extension arms generate rotational airflow, which can effectively disperse the cleaned oxide layer and particulate matter, further improving the efficiency of blowing out the oxide layer and particulate matter.

[0020] 3. By setting up a cleaning debris collection component and utilizing the elastic force of the pressure spring, it can be ensured that the sliding pressure plate can always be tightly attached to one end of the steel pipe body during the small-range back-and-forth sliding process, preventing debris from falling off, and the debris collection net can be used to collect the debris during the rotation process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the other side of the structure of the present invention;

[0023] Figure 3 This is a first sectional view of the rotating shaft in this invention;

[0024] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5 This is a schematic diagram of the transverse cross-sectional structure of the rotating shaft in this invention;

[0026] Figure 6 This is a second sectional view of the rotating shaft in this invention;

[0027] Figure 7 This is a cross-sectional view of the first extension arm in this invention;

[0028] Figure 8 This is a schematic diagram of the longitudinal cross-sectional structure of the rotating shaft in this invention.

[0029] In the diagram: 1. Machining table;

[0030] 2. Sliding table; 21. Sliding motor; 22. Sliding table; 23. Lead screw; 24. Guide rod;

[0031] 3. Rotary motor; 31. Rotary support base; 32. Rotating rod; 33. Driving pulley; 34. Driven pulley; 35. Belt;

[0032] 4. Fixed turntable; 41. Sliding pressure plate; 42. Cleaning debris collection inlet; 43. Debris collection mesh bag; 44. Pressure spring;

[0033] 5. Rotating shaft; 51. Fan blade; 52. Conical surface;

[0034] 6. First extension arm; 61. Second extension arm; 62. Cleaning brush head; 63. Axis rotating rod; 631. Torsion spring one; 64. Initial rope retraction / release; 65. Retraction / release rotating rod; 651. Torsion spring two; 66. Secondary rope retraction / release; 67. Cable retraction / release hole; 68. Guide slide rod one; 681. Guide groove one; 69. Guide slide rod two; 691. Guide groove two;

[0035] 7. Steel pipe body. Detailed Implementation

[0036] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0037] Please see Figure 1-8 This invention provides a technical solution for a steel pipe surface treatment device:

[0038] Example 1: A steel pipe surface treatment device includes a processing table 1. A sliding assembly is installed at the top of the processing table 1. A rotary drive component is installed at the sliding end of the sliding assembly. A rotary component is installed at the output end of the rotary drive component. A cleaning debris collection component is provided at the rotating end of the rotary component. A rotating shaft 5 is installed at one end of the rotating component. Multiple cleaning components are spirally spaced on the outer wall of the rotating shaft 5. A secondary extension component is provided on the inner side of the cleaning components.

[0039] The cleaning component includes a first extension arm 6 slidably disposed on the outer wall of the rotating shaft 5. A pivot rod 63 is rotatably mounted at the axis of the rotating shaft 5. Torsion springs 631 are sleeved on both ends of the outer wall of the pivot rod 63. Guide slide rods 68 are fixed at one end of each side of the first extension arm 6. A preliminary retractable pull rope 64 is wound around the outer wall of the pivot rod 63 at the corresponding position of the first extension arm 6. The movable end of the preliminary retractable pull rope 64 is fixedly connected to the first extension arm 6.

[0040] The secondary extension component includes a second extension arm 61 slidably disposed inside the first extension arm 6. Utilizing the design of the first extension arm 6 and the second extension arm 61, centrifugal force can be used during the rotational cleaning process to centrifugally throw out the first extension arm 6 and the second extension arm 61, achieving matching with the inner diameter of the cleaning tube wall. The secondary extension design enhances its applicability. A retractable lever 65 is rotatably installed at the inner end of the first extension arm 6. A torsion spring 651 is sleeved on one end of the outer wall of the retractable lever 65. A secondary retractable pull rope 66 is wound around the middle of the outer wall of the retractable lever 65. The movable end of the secondary retractable pull rope 66 is fixedly connected to the second extension arm 61. Guide slide rods 69 are fixed at one end of both sides of the second extension arm 61. A cleaning brush head 62 is installed at one end of the second extension arm 61.

[0041] A fan blade 51 is fixedly installed at one end of the rotating shaft 5. A conical surface 52 is opened at one end of the outer wall of the rotating shaft 5. During the rotation of the rotating shaft 5, the fan blade 51 generates wind force to blow the cleaned debris to one side, so as to realize the timely treatment of the cleaned pipe wall and prevent too much debris from remaining in the pipe wall. The design of the conical surface 52 can reduce the obstruction of the generated wind force and better guide the wind force to the pipe wall, so as to smoothly blow the debris to one side of the steel pipe body 7. The sliding assembly includes a sliding table 2 installed at the top of the processing table 1. A sliding motor 21 is installed at one end of the sliding table 2. A lead screw 23 is rotatably installed in the middle of the inner side of the sliding table 2. Guide rods 24 are symmetrically installed on the inner side of the sliding table 2 and on both sides of the lead screw 23. A sliding table 22 is slidably installed on the outer wall of the two guide rods 24. The lead screw 23 is threadedly connected to the sliding table 22. One end of the lead screw 23 is fixedly connected to the output end of the sliding motor 21.

[0042] The rotary drive component includes a rotary motor 3 mounted on one side of the top of the slide base 22. A drive pulley 33 is mounted on the output end of the rotary motor 3. A rotary support 31 is mounted on the middle of the top of the slide base 22. A rotary rod 32 is rotatably mounted on the inner side of the rotary support 31. A driven pulley 34 is mounted on the outer wall of the rotary rod 32 at a position corresponding to the rotary support 31. A belt 35 is fitted on the outer walls of the driven pulley 34 and the drive pulley 33. A rotating shaft 5 is fixedly mounted on one end of the rotary rod 32. The rotation of the rotary rod 32 provides centrifugal force, thereby cleaning the inner wall of the steel pipe body 7. It should be noted that, in order to ensure stability during the rotation process, the size ratio of the rotary support 31 and the rotary rod 32 can be adjusted to meet specific usage requirements.

[0043] In the second embodiment, the two ends of the torsion spring 631 are fixedly connected to the rotating shaft 5 and the axial rotating rod 63, respectively. The rotating shaft 5 has a winding and unwinding hole 67 inside, which is used to cooperate with the initial winding and unwinding of the pull rope 64. The rotating shaft 5 also has a guide groove 681 inside, which is used to cooperate with the guide slide rod 68. The two ends of the torsion spring 651 are fixedly connected to the winding and unwinding rotating rod 65 and the first extension arm 6, respectively. The inner side of the first extension arm 6 has a guide groove 691, which is used to cooperate with the guide slide rod 69. Both the first extension arm 6 and the second extension arm 61 are arc-shaped, which is used to slide outward with centrifugal force. The spiral interval design of the first extension arm 6 can conveniently provide a winding space for the initial winding and unwinding of the pull rope 64.

[0044] In embodiment three, the cleaning debris collection component includes a fixed turntable 4 installed on one side of the outer wall of the rotating rod 32. A sliding pressure plate 41 is slidably sleeved on the outer wall of the rotating shaft 5. Multiple cleaning debris collection inlets 42 are opened on one side of the sliding pressure plate 41. A debris collection net 43 is provided on the other side of the sliding pressure plate 41 at the corresponding position of the cleaning debris collection inlets 42. It should be noted that the size and position of the cleaning debris collection inlets 42 and the debris collection net 43 can be designed and matched according to the actual use environment to ensure better collection of debris. This will not be elaborated here. A pressure spring 44 is sleeved on the outer wall of the rotating rod 32 between the fixed turntable 4 and the sliding pressure plate 41. The two ends of the pressure spring 44 are fixedly connected to the fixed turntable 4 and the sliding pressure plate 41 respectively, which is used to tightly fit the sliding pressure plate 41 with one end of the steel pipe body 7, which can prevent debris from falling and collect debris more fully. It should be noted that a sealing gasket structure is provided at the contact point between the sliding pressure plate 41 and the steel pipe body 7. This will not be elaborated here.

[0045] In practical use, this invention serves as a steel pipe surface treatment device. Firstly, it should be noted that this design connects to an external control terminal to achieve remote control. This control method is common in the field and will not be described in detail here. When cleaning the inner wall of the steel pipe body 7, this design utilizes a common hoisting method to hoist the steel pipe body 7. The specific hoisting structure will not be described in detail here. The steel pipe body 7 is hoisted to the rotating shaft 5, so that the rotating shaft 5 is located near the internal axis of the steel pipe body 7. The steel pipe body 7 will exert pressure on the sliding pressure plate 41, causing the sliding pressure plate 41 to slide a certain distance to one side along the rotating shaft 5. At this time, the pressure spring 44 is in a compressed state, and the sliding pressure... The disc 41 is tightly fitted to one end of the steel pipe body 7, further controlling the operation of the rotary motor 3. Utilizing the cooperation of the driving pulley 33, driven pulley 34, and belt 35, it drives the rotating rod 32 and rotating shaft 5 to rotate. When the rotating shaft 5 rotates, under the action of centrifugal force, it throws the first extension arm 6 outward. Using the guide slide rod 68 to slide along the guide groove 681, the first extension arm 6 unfolds outward. Simultaneously, the initial winding and unwinding pull rope 64 pulls the central rotating rod 63 to rotate, gradually unwinding the initial winding and unwinding pull rope 64. The rotation of the central rotating rod 63 rotates the torsion spring 631 to a tightened state. Due to the design of the second extension arm 61, it will also be thrown outward under the action of centrifugal force, thus connecting the cleaning brush head 62 with the steel pipe body 7. The inner wall of the steel pipe body 7 is cleaned during rotation. When the second extension arm 61 is thrown outward, it pulls the retractable lever 65 to rotate and unwinds the secondary retractable rope 66, and also pulls the torsion spring 651 to a tightened state. At this time, due to the cooperation of the second extension arm 61, the range of pipe diameter that can be cleaned is increased. During the rotation cleaning process, the sliding motor 21 is controlled to rotate forward and backward, driving the screw 23 and the slide base 22 to rotate. This causes the slide base 22 to slide back and forth along the outer wall of the guide rod 24 in a small range. At this time, the cleaning brush head 62 also moves back and forth in a small range, expanding the cleaning range. At the same time, it also makes up for the cleaning blank area of ​​the spiral interval design of the first extension arm 6. Due to the elastic force of the pressure spring 44, the sliding pressure plate 41 can always be tightly fitted to one end of the steel pipe body 7 during the small-range back-and-forth sliding process, preventing debris from falling off. While cleaning, cleaning debris from the inner wall of the steel pipe body 7 will also fall onto the inner wall. However, the rotating fan blades 51 generate wind, which flows along the conical surface 52 towards the inner wall of the steel pipe body 7. At this time, the flowing air will blow the cleaned debris towards the sliding pressure plate 41. Simultaneously, during the rotational cleaning of the inside of the steel pipe body 7, due to the arc design of the first extension arm 6 and the second extension arm 61, a wind force can be generated in the direction of rotation. Furthermore, during the inner wall treatment of steel pipe bodies 7 with different inner diameters...The combined dimensions of the first extension arm 6 and the second extension arm 61 will also change. The larger the inner diameter of the steel pipe body 7, the larger the combined area of ​​the first extension arm 6 and the second extension arm 61 will be. This allows for the distribution of airflow in the rotation direction within the steel pipe body 7 of different inner diameters. This airflow in the rotation direction can effectively disperse the cleaned oxide layer and particulate matter. The dispersed oxide layer and particulate matter can then be better blown in by the lateral wind generated by the fan blades 51. During rotation, the debris is collected in multiple debris collection nets 43, improving oxygenation. The system improves the efficiency of cleaning and collecting particulate matter, thereby achieving cleaning of the inner wall of the steel pipe body 7 and debris collection. After cleaning, the rotary motor 3 stops rotating, and the rotating shaft 5 also stops rotating. Under the restoring force of torsion springs 631 and 651, the central rotating rod 63 and the retracting rotating rod 65 rotate, pulling the initial retracting rope 64 and the secondary retracting rope 66 back into place. This also retracts the first extension arm 6 and the second extension arm 61. At this point, the steel pipe body 7 can be lifted away from the rotating shaft 5.

[0046] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. A steel pipe surface treatment device, comprising a processing table (1), wherein a sliding assembly is installed at the top of the processing table (1), characterized in that: The sliding end of the sliding component is equipped with a rotary drive component, the output end of the rotary drive component is equipped with a rotary component, the rotating end of the rotary component is provided with a cleaning debris collection component, one end of the rotary component is equipped with a rotating shaft (5), the outer wall of the rotating shaft (5) is provided with a plurality of cleaning components at spiral intervals, and the inner side of the cleaning components is provided with a secondary extension component. The cleaning component includes a first extension arm (6) slidably disposed on the outer wall of the rotating shaft (5). A pivot rod (63) is rotatably mounted at the axis of the rotating shaft (5). A torsion spring (631) is sleeved at both ends of the outer wall of the pivot rod (63). A guide slide rod (68) is fixed at one end of each side of the first extension arm (6). A preliminary winding and unwinding pull rope (64) is wound around the outer wall of the pivot rod (63) at the corresponding position of the first extension arm (6). The movable end of the preliminary winding and unwinding pull rope (64) is fixedly connected to the first extension arm (6). The secondary extension component includes a second extension arm (61) slidably disposed inside the first extension arm (6). With the design of the first extension arm (6) and the second extension arm (61), the first extension arm (6) and the second extension arm (61) can be centrifugally thrown out during the rotation cleaning process by the action of centrifugal force, so as to match the inner diameter of the cleaning tube wall. The secondary extension design improves its applicability. A retractable rotating rod (65) is rotatably installed on the inner end of the first extension arm (6). A torsion spring (651) is sleeved on one end of the outer wall of the retractable rotating rod (65). A secondary retractable pull rope (66) is wound around the middle of the outer wall of the retractable rotating rod (65). The movable end of the secondary retractable pull rope (66) is fixedly connected to the second extension arm (61). A guide slide rod (69) is fixed on one end of both sides of the second extension arm (61). A cleaning brush head (62) is installed on one end of the second extension arm (61). The first extension arm (6) and the second extension arm (61) are both arc-shaped designs, used to slide outwards in coordination with centrifugal force; A fan blade (51) is fixedly installed at one end of the rotating shaft (5), and a conical surface (52) is provided at one end of the outer wall of the rotating shaft (5).

2. The steel pipe surface treatment device according to claim 1, characterized in that: The sliding assembly includes a sliding table (2) mounted on the top of the processing table (1). A sliding motor (21) is mounted on one end of the sliding table (2). A lead screw (23) is rotatably mounted on the inner middle of the sliding table (2). Guide rods (24) are symmetrically mounted on the inner side of the sliding table (2) and on both sides of the lead screw (23). A sliding table (22) is slidably mounted on the outer walls of the two guide rods (24). The lead screw (23) is threadedly connected to the sliding table (22). One end of the lead screw (23) is fixedly connected to the output end of the sliding motor (21).

3. The steel pipe surface treatment device according to claim 1, characterized in that: The rotary drive component includes a rotary motor (3) installed on one side of the top of the slide base (22). The output end of the rotary motor (3) is equipped with a drive pulley (33). A rotary support base (31) is installed at the middle of the top of the slide base (22). A rotary rod (32) is rotatably installed on the inner side of the rotary support base (31). A driven pulley (34) is installed on the outer wall of the rotary rod (32) at a position corresponding to the rotary support base (31). A belt (35) is fitted on the outer walls of the driven pulley (34) and the drive pulley (33). The rotary shaft (5) is fixedly installed at one end of the rotary rod (32).

4. The steel pipe surface treatment device according to claim 1, characterized in that: The two ends of the torsion spring (631) are fixedly connected to the rotating shaft (5) and the axial rotating rod (63) respectively. The rotating shaft (5) has a winding and unwinding threading hole (67) for use with the initial winding and unwinding of the pull rope (64). The rotating shaft (5) also has a guide groove (681) for use with the guide slide rod (68).

5. The steel pipe surface treatment device according to claim 1, characterized in that: The two ends of the second torsion spring (651) are fixedly connected to the retracting and extending rotating rod (65) and the first extension arm (6) respectively. The inner side of the first extension arm (6) is provided with a guide groove (691) that works in conjunction with the guide slide rod (69).

6. The steel pipe surface treatment device according to claim 3, characterized in that: The cleaning debris collection component includes a fixed turntable (4) installed on one side of the outer wall of the rotating rod (32), a sliding pressure plate (41) slidably sleeved on the outer wall of the rotating shaft (5), a plurality of cleaning debris collection inlets (42) are opened on one side of the sliding pressure plate (41), and a debris collection net (43) is provided on the other side of the sliding pressure plate (41) corresponding to the cleaning debris collection inlets (42). A pressure spring (44) is sleeved on the outer wall of the rotating rod (32) between the fixed turntable (4) and the sliding pressure plate (41).

7. The steel pipe surface treatment device according to claim 6, characterized in that: The two ends of the pressure spring (44) are fixedly connected to the fixed turntable (4) and the sliding pressure plate (41) respectively, and are used to tightly fit the sliding pressure plate (41) with one end of the steel pipe body (7).

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