A pipeline and pipe fitting surface cleaning device

Abstract

The present invention discloses a pipeline pipe fitting surface cleaning device, belonging to the field of pipeline cleaning. A pipeline pipe fitting surface cleaning device includes an outer arc plate with a downward opening, and also includes: an arc groove, arranged at the lower end of the outer arc plate, wherein an inner arc plate cocentric with the outer arc plate is slidably connected in the arc groove, the inner arc plate is semicircular, and arc sliding holes are arranged on both sides of the lower end of the inner arc plate, and arc inner tubes are slidably connected in the two arc sliding holes; two parallel arc outer tubes are arranged on the inner wall of the inner arc plate, wherein the two arc outer tubes are respectively fixedly connected and communicated with one end of the two arc inner tubes, the lower end outer walls of the two arc outer tubes are provided with a first brush distributed in an arc shape, and the lower end outer wall of the outer arc plate is provided with a second brush distributed in an arc shape; the present invention can automatically complete the cleaning work of the outer wall of the pipeline pipe fitting, and the cleaning efficiency and quality are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline cleaning, and in particular to a pipeline pipe fitting surface cleaning device. Background Art

[0002] A pipeline is a device connected by pipes, pipe connectors and valves for conveying gas, liquid or fluid with solid particles. Usually, the fluid is pressurized by blowers, compressors, pumps and boilers, and then flows from the high-pressure part of the pipeline to the low-pressure part. The fluid can also be conveyed by its own pressure or gravity. Some pipelines are directly exposed to the air, and dust is likely to accumulate on the surface of the pipeline after a long time.

[0003] At present, when cleaning the dust on the outer wall of the pipeline, most of the time, cleaning tools are used manually to clean the surface. When the pipeline is long and the diameter is large, the efficiency of manual cleaning is greatly reduced. In addition, some dust is easy to clump after being accumulated for a long time, and it is difficult to clean it with simple cleaning, which further affects the cleaning efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the cleaning of the outer wall of the pipeline in the prior art is not efficient enough, and to propose a pipeline and pipe fitting surface cleaning device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A pipeline pipe surface cleaning device comprises an outer arc plate opening downward, and also comprises: an arc groove arranged at the lower end of the outer arc plate, wherein an inner arc plate cocentric with the outer arc plate is slidably connected in the arc groove, the inner arc plate is semicircular, arc sliding holes are arranged on both sides of the lower end of the inner arc plate, and arc inner tubes are slidably connected in two of the arc sliding holes; two parallel arc outer tubes are arranged on the inner wall of the inner arc plate, wherein the two arc outer tubes are respectively fixedly connected and communicated with one end of the two arc inner tubes, the lower end outer walls of the two arc outer tubes are provided with a first brush distributed in an arc shape, the lower end outer wall of the outer arc plate is provided with a second brush distributed in an arc shape, and the two arc sliding holes are provided with an ejection component for driving the arc inner tube to slide.

[0007] In order to automatically sleeve the arc-shaped outer tube onto the outer wall of the pipe, preferably, the ejection assembly includes storage tanks fixedly mounted on both sides of the upper end of the outer arc-shaped plate, and the two arc-shaped inner tubes are elastically connected to the inner tops of the two arc-shaped sliding holes by elastic ropes, wherein both sides of the upper end of the inner arc-shaped plate are provided with air intake pipes connected to the arc-shaped sliding holes, and the two air intake pipes are respectively fixedly connected and connected to the two storage tanks by a first connecting pipe, an opening and closing valve is fixedly mounted on the first connecting pipe, and the outer walls of the two arc-shaped outer tubes are provided with a plurality of evenly distributed air nozzles.

[0008] In order to facilitate the linear movement of the outer arc plate, preferably, rubber rollers are rotatably mounted on both sides of the lower end of the outer arc plate through a rotating rod, and the outer walls of the four rubber rollers are provided with anti-slip grooves.

[0009] In order to improve the effect of pipeline cleaning, preferably, the upper end of the inner arc plate is fixedly connected with an arc-shaped rack, and the upper end of the outer arc plate is provided with a slide groove corresponding to the arc-shaped rack, wherein a linear rack meshing with the arc-shaped rack is slidably connected in the slide groove, and the upper end of the outer arc plate is provided with a reciprocating mechanism for driving the linear rack to move left and right.

[0010] In order to drive the linear rack to swing back and forth, preferably, the reciprocating mechanism includes two vertical plates fixedly connected to the upper ends of the outer arc-shaped plate, and a reciprocating screw is rotatably connected between the two vertical plates, wherein a reciprocating slide plate matching with the reciprocating slide plate is threadedly connected to the outer wall of the reciprocating screw, and the lower end of the reciprocating slide plate is fixedly connected to the linear rack, and a driving source for driving the reciprocating screw to rotate continuously is provided on the outer arc-shaped plate.

[0011] In order to drive the reciprocating screw to rotate, preferably, the driving source includes a driving motor fixedly mounted on the upper end of the outer arc plate, and the driving motor is connected to the reciprocating screw via two meshing gears.

[0012] In order to automatically drive the rubber roller to rotate, preferably, both ends of the reciprocating screw are fixedly connected with extension shafts, and the two extension shafts are respectively connected to two coaxial rotating rods through chain transmission.

[0013] In order to automatically pressurize the storage tank, preferably, a telescopic airbag is fixedly installed between the reciprocating slide plate and the two vertical plates, and an intake pipe and an exhaust pipe are fixedly installed on the two telescopic airbags, wherein a one-way valve is fixedly installed in the intake pipe and the exhaust pipe, and the exhaust pipe is fixedly connected and communicated with the input end of the storage tank through a second connecting pipe.

[0014] In order to facilitate taking the entire device, preferably, handles are fixedly installed on both the front and rear sides of the outer arc-shaped plate, and rubber sleeves are sleeved on the outer walls of the two handles.

[0015] In order to ensure the quality of cleaning the pipeline by the arc-shaped outer tube, further, the diameters of the two arc-shaped outer tubes are the same, and the cross-sections of the two arc-shaped outer tubes are both semicircular.

[0016] Compared with the prior art, the present invention provides a pipeline and pipe fitting surface cleaning device, which has the following beneficial effects:

[0017] 1. The pipeline surface cleaning device places the inner arc plate on the upper end of the pipeline and opens the valves on the two first connecting pipes. The two arc outer pipes will automatically wrap around the outer wall of the pipeline. At this time, the gas in the arc sliding hole will finally be sprayed from the air nozzle to the outer wall of the pipeline, thereby automatically blowing off the outer wall of the pipeline. Then, the inner arc plate is linearly moved along the outer wall of the pipeline to complete the automatic cleaning of the pipeline.

[0018] 2. The pipe fitting surface cleaning device drives the reciprocating screw to rotate through a driving motor. The reciprocating screw drives the linear rack to move back and forth through a reciprocating slide, thereby driving the arc-shaped outer tube to swing back and forth on the outer wall of the pipe, thereby improving the quality and efficiency of the first brush and the air nozzle in cleaning dust.

[0019] 3. The pipeline and pipe surface cleaning device will intermittently stretch and compress the telescopic airbag through a reciprocating slide plate. When the telescopic airbag is compressed, the telescopic airbag will transport the internal air to the storage tank through the exhaust pipe and the second connecting pipe, thereby automatically pressurizing the storage tank. There is no need to manually inflate the storage tank, which is more convenient to use.

[0020] 4. The surface cleaning device for pipeline fittings closes the valve in the first connecting pipe, and the elastic rope automatically pulls the arc-shaped inner pipe to be automatically stored in the arc-shaped sliding hole, and the arc-shaped outer pipe also automatically stops wrapping the pipe. At this time, the inner arc plate can be removed from the pipe, which makes the operation of the staff simpler and more labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the axonometric structure of a pipeline and pipe fitting surface cleaning device proposed by the present invention from a first perspective;

[0022] Figure 2 This is a schematic diagram of the axonometric structure from a second perspective of a pipeline and pipe fitting surface cleaning device proposed by the present invention;

[0023] Figure 3 This is a schematic diagram of a front view cutaway structure of a pipeline and pipe fitting surface cleaning device proposed by the present invention;

[0024] Figure 4 A pipeline and pipe fitting surface cleaning device proposed by the present invention Figure 3 Enlarged view of part A;

[0025] Figure 5 A pipeline and pipe fitting surface cleaning device proposed by the present invention Figure 1 Enlarged view of part B;

[0026] Figure 6 This is a schematic diagram of the axonometric structure of an inner arc plate of a pipeline and pipe fitting surface cleaning device proposed by the present invention;

[0027] Figure 7 This is a schematic diagram of the cross-sectional structure of an arc-shaped inner tube and an arc-shaped outer tube of a pipeline and pipe fitting surface cleaning device proposed by the present invention.

[0028] In the figure: 1. outer arc plate; 2. inner arc plate; 3. arc-shaped sliding hole; 4. arc-shaped inner tube; 5. arc-shaped outer tube; 6. elastic rope; 7. first brush; 8. air intake pipe; 9. storage tank; 10. first connecting pipe; 11. second brush; 12. vertical plate; 13. reciprocating screw; 14. driving motor; 15. gear; 16. telescopic airbag; 17. exhaust pipe; 18. intake pipe; 19. second connecting pipe; 20. reciprocating slide plate; 21. linear rack; 22. slide groove; 23. arc-shaped teeth; 24. rotating rod; 25. rubber roller; 26. extension shaft; 27. chain drive; 28. handle; 29. ​​arc-shaped groove; 30. air nozzle. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] Embodiment 1:

[0032] Reference Figure 1-Figure 7 A pipe fitting surface cleaning device includes an outer arc plate 1 with a downward opening, and also includes: an arc groove 29, which is arranged at the lower end of the outer arc plate 1, wherein an inner arc plate 2 cocentric with the outer arc plate 1 is slidably connected in the arc groove 29, the inner arc plate 2 is semicircular, and arc sliding holes 3 are arranged on both sides of the lower end of the inner arc plate 2, and arc inner tubes 4 are slidably connected in the two arc sliding holes 3; the outlet of the arc sliding hole 3 is also provided with a stop block to prevent the arc inner tube 4 from completely exiting the arc sliding hole 3, in order to ensure sealing, the outer wall of the arc-shaped inner tube 4 is also provided with a sealing ring, two parallel arc-shaped outer tubes 5 are arranged on the inner wall of the inner arc-shaped plate 2, wherein the two arc-shaped outer tubes 5 are respectively fixedly connected and communicated with one end of the two arc-shaped inner tubes 4, the lower end outer walls of the two arc-shaped outer tubes 5 are provided with arc-shaped first brushes 7, the lower end outer wall of the outer arc-shaped plate 1 is provided with arc-shaped second brushes 11, and the two arc-shaped sliding holes 3 are provided with ejection components for driving the arc-shaped inner tubes 4 to slide.

[0033] When in use, the inner arc plate 2 is placed on the upper end of the horizontally placed pipe, and the arc inner tube 4 in the arc sliding hole 3 is pushed outward by the ejection component until the ends of the two arc inner tubes 4 are pressed against each other, which can drive the two arc outer tubes 5 to move synchronously and form a circle, and the two arc outer tubes 5 are just completely wrapped around the outer wall of the pipe. At this time, the gas in the arc sliding hole 3 will finally be sprayed from the air nozzle 30 to the outer wall of the pipe, thereby automatically blowing off the outer wall of the pipe. At this time, the inner arc plate 2 is pushed to move linearly along the pipe, and the arc outer tube 5 can clean the outer wall of the pipe through the first brush 7, and the second brush 11 on the inner wall of the inner arc plate 2 will also clean the outer wall of the pipe synchronously, and the air nozzle 30 will blow off the dust on the outer wall of the pipe, so that the cleaning work of the pipe can be automatically completed with high cleaning efficiency.

[0034] Furthermore, rubber rollers 25 are rotatably installed on both sides of the lower end of the outer arc plate 1 through a rotating rod 24, and the outer walls of the four rubber rollers 25 are provided with anti-slip grooves. Through the provided rubber rollers 25, the staff can directly push the outer arc plate 1, and the outer arc plate 1 can be moved linearly on the outer wall of the pipe through the rubber rollers 25, and the anti-slip grooves on the rubber rollers 25 can prevent the outer arc plate 1 from sliding off the pipe.

[0035] Furthermore, handles 28 are fixedly installed on both the front and rear sides of the outer arc-shaped plate 1, and rubber sleeves are sleeved on the outer walls of the two handles 28, so it is more labor-saving and convenient to use the handles 28 to take the entire device.

[0036] Furthermore, the two arc-shaped outer tubes 5 have the same diameter and semicircular cross-sections, so that the two arc-shaped outer tubes 5 can completely wrap the outer wall of the pipeline when fully unfolded, preventing the outer wall of the pipeline from having areas that cannot be cleaned.

[0037] Embodiment 2:

[0038] Reference Figure 1-Figure 4 as well as Figure 6-Figure 7 , which is basically the same as Example 1, and further discloses a specific implementation scheme of the ejection assembly.

[0039] The ejection assembly includes storage tanks 9 fixedly mounted on both sides of the upper end of the outer arc plate 1, and the two arc inner tubes 4 are elastically connected to the inner tops of the two arc sliding holes 3 by elastic ropes 6, wherein both sides of the upper end of the inner arc plate 2 are provided with air intake pipes 8 connected to the arc sliding holes 3, and the two air intake pipes 8 are fixedly connected and connected to the two storage tanks 9 respectively by first connecting pipes 10, and an opening and closing valve is fixedly mounted on the first connecting pipe 10, and the outer walls of the two arc outer tubes 5 are provided with a plurality of evenly distributed air nozzles 30.

[0040] By opening the valves on the two first connecting pipes 10, the gas in the two storage tanks 9 will be transported to the two arc-shaped sliding holes 3 through the first connecting pipes 10, and the high-pressure gas will push the arc-shaped inner tube 4 in the arc-shaped sliding hole 3 outward until the ends of the two arc-shaped inner tubes 4 are pressed against each other, thereby driving the two arc-shaped outer tubes 5 to move synchronously and form a circle, and the two arc-shaped outer tubes 5 are just completely wrapped around the outer wall of the pipeline. At this time, the gas in the arc-shaped sliding hole 3 will finally be sprayed from the gas nozzle 30 to the outer wall of the pipeline, thereby automatically blowing away the outer wall of the pipeline.

[0041] Furthermore, the storage tank 9 can also store cleaning liquid, and the storage tank 9 can be pressurized by an air pump, so that the air nozzle 30 can spray the cleaning liquid, thereby cleaning some more stubborn pipe stains.

[0042] Embodiment 3:

[0043] Reference Figure 1-Figure 5 , which is basically the same as Example 2, and further, a specific implementation plan for improving the pipeline cleaning effect is specifically added.

[0044] An arc-shaped rack 23 is fixedly connected to the upper end of the inner arc plate 2, and a slide groove 22 corresponding to the arc-shaped rack 23 is provided at the upper end of the outer arc plate 1, wherein a linear rack 21 meshing with the arc-shaped rack 23 is slidably connected in the slide groove 22, and a reciprocating mechanism for driving the linear rack 21 to move left and right is provided at the upper end of the outer arc plate 1.

[0045] During the cleaning of the outer wall of the pipe, the reciprocating mechanism can drive the linear rack 21 to move back and forth, and the linear rack 21 will drive the inner arc plate 2 to swing back and forth through the arc rack 23, thereby driving the arc outer tube 5 to swing back and forth on the outer wall of the pipe, thereby improving the quality and efficiency of the first brush 7 and the air nozzle 30 in cleaning dust.

[0046] Embodiment 4:

[0047] Reference Figure 1-Figure 5 , which is basically the same as Example 3, and further discloses a specific implementation scheme of the reciprocating mechanism.

[0048] The reciprocating mechanism includes two vertical plates 12 fixedly connected to the upper end of the outer arc plate 1, and a reciprocating screw 13 is rotatably connected between the two vertical plates 12, wherein a reciprocating slide plate 20 cooperating with the reciprocating screw 13 is threadedly connected to the outer wall of the reciprocating screw 13. When the reciprocating screw 13 rotates, the reciprocating slide plate 20 can slide back and forth along the outer wall of the reciprocating screw 13. The lower end of the reciprocating slide plate 20 is fixedly connected to a linear rack 21, and a driving source for driving the reciprocating screw 13 to rotate continuously is provided on the outer arc plate 1; the driving source includes a driving motor 14 fixedly installed on the upper end of the outer arc plate 1, and the driving motor 14 is connected to the reciprocating screw 13 by two meshing gears 15.

[0049] During the cleaning of the outer wall of the pipeline, the driving motor 14 is started. The driving motor 14 can drive the reciprocating screw 13 to rotate through two meshing gears 15. The reciprocating screw 13 will drive the linear rack 21 to move back and forth through the reciprocating slide plate 20. The linear rack 21 will drive the inner arc plate 2 to swing back and forth through the arc rack 23, thereby driving the arc outer tube 5 to swing back and forth on the outer wall of the pipeline, thereby improving the quality and efficiency of the first brush 7 and the air nozzle 30 in cleaning dust.

[0050] Furthermore, both ends of the reciprocating screw 13 are fixedly connected with extension shafts 26, and the two extension shafts 26 are respectively connected to two coaxial rotating rods 24 through chain transmissions 27. When the reciprocating screw 13 rotates, the reciprocating screw 13 can drive the extension shafts 26 to rotate synchronously, and the extension shafts 26 will drive the rotating rods 24 and the rubber rollers 25 to rotate through the chain transmission 27. The rubber rollers 25 can drive the outer arc plate 1 and the inner arc plate 2 to slide linearly along the outer wall of the pipe, so that the entire device does not need to be pushed manually, and the degree of automation of the entire device is greatly improved.

[0051] Embodiment 5:

[0052] Reference Figure 1-Figure 3 as well as Figure 5 , which is basically the same as Example 4, and further discloses a specific implementation scheme for automatically pressurizing the storage tank 9.

[0053] A telescopic airbag 16 is fixedly installed between the reciprocating slide plate 20 and the two vertical plates 12. The telescopic airbag 16 can be stretched and compressed. An intake pipe 18 and an exhaust pipe 17 are fixedly installed on the two telescopic airbags 16. A one-way valve is fixedly installed in the intake pipe 18 and the exhaust pipe 17. The exhaust pipe 17 is fixedly connected and communicated with the input end of the storage tank 9 through a second connecting pipe 19.

[0054] When the reciprocating slide plate 20 slides back and forth, the reciprocating slide plate 20 will intermittently stretch and compress the telescopic airbag 16. When the telescopic airbag 16 is compressed, the telescopic airbag 16 will transport the internal air to the storage tank 9 through the exhaust pipe 17 and the second connecting pipe 19, thereby automatically pressurizing the storage tank 9. There is no need to manually inflate the storage tank 9, which is more convenient to use and can also maintain sufficient pressure for the compressed gas in the storage tank 9. When the telescopic airbag 16 is stretched, the telescopic airbag 16 will absorb outside air through the intake pipe 18.

[0055] When the present pipeline and pipe fitting surface cleaning device is used, the inner arc plate 2 is placed on the upper end of the horizontally placed pipeline, and the valves on the two first connecting pipes 10 are opened. The gas in the two storage tanks 9 will be transported to the two arc-shaped sliding holes 3 through the first connecting pipes 10, and the high-pressure gas will push the arc-shaped inner tube 4 in the arc-shaped sliding hole 3 outward until the ends of the two arc-shaped inner tubes 4 are pressed against each other, which can drive the two arc-shaped outer tubes 5 to move synchronously and form a circle, and the two arc-shaped outer tubes 5 are just completely wrapped around the outer wall of the pipeline. At this time, the gas in the arc-shaped sliding hole 3 will finally be sprayed from the gas nozzle 30 to the outer wall of the pipeline, thereby automatically cleaning the outer wall of the pipeline. During the soot blowing operation, the driving motor 14 is started, and the driving motor 14 will drive the extension shaft 26 to rotate through the two meshing gears 15, and the extension shaft 26 will drive the rotating rod 24 and the rubber roller 25 to rotate through the chain drive 27, and the rubber roller 25 can drive the outer arc plate 1 and the inner arc plate 2 to slide linearly along the outer wall of the pipeline, thereby driving the arc outer tube 5 to slide synchronously, and the arc outer tube 5 can clean the outer wall of the pipeline through the first brush 7, and the second brush 11 on the inner wall of the inner arc plate 2 will also clean the outer wall of the pipeline synchronously, and the air nozzle 30 will blow off the dust on the outer wall of the pipeline, so that the cleaning work of the pipeline can be automatically completed with high cleaning efficiency.

[0056] During the rotation of the extension shaft 26, the reciprocating screw 13 will also rotate synchronously. The reciprocating screw 13 will drive the linear rack 21 to move back and forth left and right through the reciprocating slide 20, and the linear rack 21 will drive the inner arc plate 2 to swing back and forth through the arc rack 23, thereby driving the arc outer tube 5 to swing back and forth on the outer wall of the pipeline, which can improve the quality and efficiency of the first brush 7 and the air nozzle 30 to clean the dust. In addition, when the reciprocating slide 20 slides back and forth, the reciprocating slide 20 will intermittently stretch and compress the telescopic airbag 16. When the telescopic airbag 16 is compressed, the telescopic airbag 16 will transport the internal air to the storage tank 9 through the exhaust pipe 17 and the second connecting pipe 19, thereby automatically filling the storage tank 9. The compressed air in the storage tank 9 is kept at a sufficient pressure without the need to manually inflate the storage tank 9, which is more convenient to use. When the telescopic airbag 16 is stretched, the telescopic airbag 16 absorbs outside air through the suction pipe 18. When the cleaning is completed, the valve in the first connecting pipe 10 is closed, and the compressed air in the storage tank 9 no longer enters the arc-shaped sliding hole 3. The compressed air in the arc-shaped inner tube 4 will become less and less. At this time, the elastic rope 6 will automatically pull the arc-shaped inner tube 4 to automatically store it in the arc-shaped sliding hole 3, and the arc-shaped outer tube 5 will also automatically stop wrapping the pipeline. At this time, the inner arc plate 2 can be removed from the pipeline, which can make the operation of the staff simpler and more labor-saving.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pipe fitting surface cleaning device, comprising an outer arc-shaped plate (1) with an opening facing downward, characterized in that: Also includes: The arc groove (29) is arranged at the lower end of the outer arc plate (1). The arc groove (29) is slidably connected to an inner arc plate (2) which is cocentric with the outer arc plate (1); the inner arc plate (2) is semicircular; arc sliding holes (3) are provided on both sides of the lower end of the inner arc plate (2); and arc inner tubes (4) are slidably connected to the two arc sliding holes (3); Two parallel arc-shaped outer tubes (5) are both arranged on the inner wall of the inner arc-shaped plate (2). The two arc-shaped outer tubes (5) are respectively fixedly connected to and communicated with one end of the two arc-shaped inner tubes (4); the lower end outer walls of the two arc-shaped outer tubes (5) are each provided with an arc-shaped first brush (7); the lower end outer wall of the outer arc-shaped plate (1) is provided with an arc-shaped second brush (11); and the two arc-shaped sliding holes (3) are each provided with an ejection assembly for driving the arc-shaped inner tubes (4) to slide; The ejection assembly comprises: storage tanks (9) fixedly mounted on both sides of the upper end of the outer arc plate (1); the two arc inner tubes (4) are elastically connected to the inner tops of the two arc sliding holes (3) via elastic ropes (6); wherein both sides of the upper end of the inner arc plate (2) are provided with air intake pipes (8) connected to the arc sliding holes (3); the two air intake pipes (8) are respectively fixedly connected and connected to the two storage tanks (9) via first connecting pipes (10); an opening and closing valve is fixedly mounted on the first connecting pipe (10); and the outer walls of the two arc outer tubes (5) are provided with a plurality of evenly distributed air nozzles (30).

2. A pipe fitting surface cleaning device according to claim 1, characterized in that: Rubber rollers (25) are rotatably mounted on both sides of the lower end of the outer arc-shaped plate (1) via a rotating rod (24), and the outer walls of the four rubber rollers (25) are provided with anti-slip grooves.

3. A pipe fitting surface cleaning device according to claim 2, characterized in that: The upper end of the inner arc-shaped plate (2) is fixedly connected with an arc-shaped rack (23), and the upper end of the outer arc-shaped plate (1) is provided with a slide groove (22) corresponding to the arc-shaped rack (23). A linear rack (21) meshingly connected with an arc-shaped rack (23) is slidably connected in the slide groove (22), and a reciprocating mechanism for driving the linear rack (21) to move left and right is provided at the upper end of the outer arc-shaped plate (1).

4. A pipe fitting surface cleaning device according to claim 3, characterized in that: The reciprocating mechanism comprises: Two vertical plates (12) are fixedly connected to the upper ends of the outer arc-shaped plate (1), and a reciprocating screw (13) is rotatably connected between the two vertical plates (12). A reciprocating slide plate (20) is threadedly connected to the outer wall of the reciprocating screw (13), the lower end of the reciprocating slide plate (20) is fixedly connected to a linear rack (21), and a driving source for driving the reciprocating screw (13) to rotate continuously is provided on the outer arc plate (1).

5. A pipe fitting surface cleaning device according to claim 4, characterized in that: The driving source comprises: A drive motor (14) is fixedly mounted on the upper end of the outer arc-shaped plate (1), and the drive motor (14) is connected to the reciprocating screw (13) via two meshing gears (15).

6. A pipe fitting surface cleaning device according to claim 4, characterized in that: Both ends of the reciprocating screw (13) are fixedly connected with an extension shaft (26), and the two extension shafts (26) are respectively connected to two coaxial rotating rods (24) through a chain drive (27).

7. A pipe fitting surface cleaning device according to claim 4, characterized in that: A telescopic airbag (16) is fixedly installed between the reciprocating slide plate (20) and the two vertical plates (12), and an air intake pipe (18) and an air discharge pipe (17) are fixedly installed on the two telescopic airbags (16). Wherein, one-way valves are fixedly installed in the air intake pipe (18) and the air exhaust pipe (17), and the air exhaust pipe (17) is fixedly connected and communicated with the input end of the storage tank (9) via a second connecting pipe (19).

8. A pipe fitting surface cleaning device according to claim 1, characterized in that: Handles (28) are fixedly mounted on both the front and rear sides of the outer arc-shaped plate (1), and rubber sleeves are sleeved on the outer walls of the two handles (28).

9. A pipe fitting surface cleaning device according to claim 1, characterized in that: The two arc-shaped outer tubes (5) have the same diameter, and the cross-sections of the two arc-shaped outer tubes (5) are both semicircular.

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