Environment-friendly steel pipe cutting machine capable of preventing chippings from scattering all around

Abstract

The invention discloses an environment-friendly steel pipe cutting machine capable of preventing chippings from scattering all around, and belongs to the technical field of steel pipe cutting machining. The environment-friendly steel pipe cutting machine comprises a rack stably placed above the ground, a first motor is fixedly installed on the upper surface of the rack, and a discharging pipe is rotatably installed on the upper surface of the rack in a penetrating mode; a cutting machine shell is installed on the outer side of the discharging pipe in a lifting mode through an air cylinder, meanwhile, a cutting blade is rotatably installed on the inner side of the discharging pipe, a protection pipe is connected to the upper end of the discharging pipe, a cutter hole is formed in the middle of the protection pipe, sliding blocks are symmetrically arranged in the cutter hole in a sliding mode, and corrugated blocking pieces are arranged on the outer sides of the sliding blocks. And meanwhile, a sealing clamping assembly is further arranged on the protection pipe, and a cleaning assembly used for cleaning residual scraps on the inner wall is further arranged on the inner side of the protection pipe. According to the environment-friendly steel pipe cutting machine capable of preventing the chippings from scattering all around, a cutting area can be effectively covered and protected, the chippings are prevented from splashing and scattering, and the chippings can be conveniently collected after cutting is completed.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe cutting and processing, in particular to an environmentally friendly steel pipe cutting machine capable of preventing debris from scattering. Background Art

[0002] Steel pipes are widely used in many fields such as industrial production and construction, such as oil pipeline laying, building structure construction, and parts processing in machinery manufacturing. During the steel pipe processing, it is often necessary to cut the steel pipe according to the specific application environment. Therefore, an environmentally friendly steel pipe cutting machine is needed to cut the steel pipe.

[0003] The prior art (application number: 202420694014.7, Chinese patent with application date of 2024.04.07) discloses an automatic cutting device with anti-splash function, which relates to the field of steel pipe processing technology, including a leveling bottom plate, a conveyor belt is arranged on the upper side of the leveling bottom plate near the front end, and the four corners of the lower end of the conveyor belt are fixedly connected with seat shock absorbers, the lower end of the output end of the single-arm hydraulic press is fixedly connected with a pressing plate, and the four corners of the lower end of the pressing plate are fixedly connected with a fixed cylinder, and the front and rear ends of the conveyor belt are fixedly connected with a force plate at the corresponding fixed cylinder, and the lower end of the pressing plate is fixedly connected with a pressure piece near the middle of the left and right sides. When it is used, it does not need to be fixed by the staff, and at the same time, it realizes the purpose of automatic pushing, improves the cutting efficiency, and effectively prevents the splashing of waste chips by moving the push-pull plate to the minimum distance that does not affect the cutting disc, and at the same time, it is collected through the waste chip collection box, which reduces the work of later cleaning. It uses the movement of the push-pull plate to block the waste chips, but the push-pull plate uses lateral translation to achieve the opening, resulting in a gap between the two sets of push-pull plates when in use, so that the waste chips will still splash along the cutting direction of the cutting blade, and the waste chips cannot be fully blocked. After the cutting is completed, it is inconvenient to automatically clean and collect the blocked waste chips, and there are certain usage defects. Summary of the invention

[0004] The purpose of the present invention is to provide an environmentally friendly steel pipe cutting machine that prevents debris from scattering, so as to solve the problem raised by the above background technology that the steel pipe cutting machines on the market currently cannot fully block the waste chips, and it is inconvenient to automatically clean and collect the blocked waste chips after cutting is completed.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an environmentally friendly steel pipe cutting machine that prevents debris from scattering, comprising a frame stably placed above the ground, a first motor fixedly mounted on the upper surface of the frame, a discharge pipe rotatably mounted through the upper surface of the frame, a cutting housing mounted on the outer side of the discharge pipe by means of a cylinder, and a cutting blade rotatably mounted on the inner side, a roller rotatably mounted on the outer side of the cutting housing by means of a bracket, a second motor fixedly mounted on the frame, a screw rod fixedly mounted on the output end of the second motor, and a clamping assembly for fixing the steel pipe symmetrically arranged on the outer side of the screw rod; The upper end of the discharge pipe is connected to a protective tube, and a knife hole is opened in the middle of the protective tube, and a slider is symmetrically slidably arranged inside the knife hole, and a corrugated baffle is arranged on the outside of the slider. At the same time, a sealing clamping assembly is also arranged on the protective tube, and a cleaning assembly for cleaning residual waste on the inner wall is also arranged on the inner side of the protective tube.

[0006] Preferably, a driving gear is fixedly installed on the output end of the first motor, and a transmission gear is fixedly installed on the outer side of the lower end of the discharge pipe, and the driving gear and the transmission gear are meshed and connected, and the steel pipe passes through the protective tube above the discharge pipe.

[0007] Preferably, the clamping assembly includes an adjustment seat symmetrically threadedly connected to the outside of the screw rod, and the threads at both ends of the screw rod have opposite rotation directions, and the two adjustment seats are driven to move away from and closer to each other during the rotation of the screw rod.

[0008] Preferably, a column structure is provided at the upper end of the adjustment seat, and a positioning piece is evenly and elastically rotatably connected to the outer side of one end of the column structure close to the protective tube, and the cross-section of the positioning piece is L-shaped. At the same time, the end of the positioning piece close to the column is fitted to the end of the steel pipe, and during the rotation of the positioning piece, the end away from the column is fitted to the inner wall of the end of the steel pipe.

[0009] Preferably, the inner wall of the positioning piece is bonded with a conveying airbag made of elastic material, and an air tube is connected to the conveying airbag, and the end of the air tube faces the inner side of the steel pipe, and the conveying airbag is stretched during the rotation of multiple positioning pieces, and the conveying airbag is squeezed during the resetting rotation of multiple positioning pieces.

[0010] Preferably, an inclined portion is provided on the outer side of the slider, and the roller is fitted against the outer side of the inclined portion of the slider during the downward movement to push the slider to move, and the slider is slidably connected to the knife hole, and the lower end of the knife hole is lower than the lower end position of the steel pipe, and the corrugated baffle connected to the outer side of the slider is fitted against the inner wall of the knife hole, and the cutting blade and the knife hole are gap-matched, and the position of the roller is lower than the lower end position of the cutting blade, and the distance between the outermost ends of the inclined portions of the two sliders is greater than the outer diameter of the protective tube.

[0011] Preferably, the sealing clamping assembly includes a liquid storage bag fixedly installed between the slider and the fixed plate arranged at the lower part of the protective tube, and the inner walls at both ends of the protective tube are embedded with sealing liquid bags fixedly installed, and the sealing liquid bag and the liquid storage bag are connected by a pipeline, and during the downward movement of the slider, part of the liquid in the liquid storage bag is transported to the sealing liquid bag through the pipeline, and at the same time, the inner ring wall of the sealing liquid bag is inflated and fits the steel pipe.

[0012] Preferably, the cleaning assembly includes a guide column fixedly mounted on the outer side of the slider, and the guide column is located on the inner side of the protection tube, and the guide column and the protection tube are arranged flush, and a cleaning scraper is arranged through the outer side of the guide column.

[0013] Preferably, the cleaning blade is arranged in a circular ring structure, and two cleaning blades are symmetrically arranged about the protective tube, and the outer wall of the cleaning blade is in contact with the inner wall of the protective tube. At the same time, a ball is embedded in the outer wall of the cleaning blade, and a spiral guide groove is opened on the inner wall of the protective tube, and the ball rolls along the guide groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the environmentally friendly steel pipe cutting machine that prevents debris from scattering can achieve effective covering and protection of the cutting area, prevent debris from splashing and scattering, and can conveniently collect the debris after cutting is completed. The specific contents are as follows; 1. An adjusting seat and a positioning piece are provided. The second motor drives the screw rod to rotate, which can drive the two adjusting seats closer to each other, so that the positioning piece can be inserted into both ends of the steel pipe. At the same time, the outer end of the positioning piece will contact the end of the steel pipe and rotate elastically, so that the end of the positioning piece located on the inner side of the pipe body can expand and fit the inner wall of the pipe, thereby clamping and fixing the pipe, which is convenient for subsequent cutting operations.

[0015] 2. A slider and a corrugated baffle are provided. As the cutting blade moves downward, the roller will push the slider to slide along the knife hole, so that the corrugated baffle is folded, thereby ensuring that the cutting blade can smoothly cut into the inside of the protective tube to cut the steel pipe, and the corrugated baffle can block and protect the debris generated during the cutting process.

[0016] 3. A liquid storage bag and a sealing liquid bag are provided. As the slider slides, it can squeeze the liquid storage bag, so that part of the liquid in the liquid storage bag enters the sealing liquid bag through the pipeline, so that the sealing liquid bag expands and fits to the outer wall clamped on the steel pipe, thereby realizing secondary positioning of the steel pipe.

[0017] 4. A cleaning scraper is provided. As the slider slides, the slider can drive the cleaning scraper to rotate synchronously through the guide column. At this time, the ball embedded on the outside of the cleaning scraper will slide along the guide groove, so that the cleaning scraper will be away from the knife hole during the rotation process. When the slider is reset after the cutting is completed, the cleaning scraper will rotate and slide synchronously to reset, thereby realizing automatic cleaning of debris attached to the inner wall of the protective tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a rear view structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the installation structure of the discharge pipe of the present invention; Figure 4 This is a schematic diagram of the installation structure of the protection tube of the present invention; Figure 5 This is a schematic diagram of the installation structure of the positioning member of the present invention; Figure 6 For the present invention Figure 5 The enlarged structural diagram at A in the middle; Figure 7 This is a schematic diagram of the connection structure between the adjustment seat and the positioning member of the present invention; Figure 8 This is a schematic diagram of the side cross-sectional structure of the protection tube of the present invention; Fig. 9 This is a schematic diagram of the connection structure between the slider and the cleaning blade of the present invention; Fig.10 It is a schematic diagram of the installation structure of the corrugated baffle of the present invention.

[0019] In the figure: 1. frame; 2. first motor; 3. driving gear; 4. discharge pipe; 5. transmission gear; 6. protection tube; 601, guide groove; 7. cutting housing; 8. cutting blade; 9. roller; 10. second motor; 11. screw rod; 12. adjustment seat; 13. positioning piece; 14. conveying air bag; 15. air pipe; 16. knife hole; 17. slider; 18. corrugated baffle; 19. liquid storage capsule; 20. sealing liquid capsule; 21. guide column; 22. cleaning scraper; 23. ball bearing. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figure 1-Figure 8As shown, the existing steel pipe cutting machine is inconvenient to clamp the pipe quickly and stably during use, resulting in limited subsequent cutting accuracy. In order to solve this technical problem, the present embodiment discloses the following technical content; an environmentally friendly steel pipe cutting machine that prevents debris from scattering, comprising a frame 1 stably placed above the ground, a first motor 2 is fixedly mounted on the upper surface of the frame 1, and a discharge pipe 4 is rotatably mounted through the upper surface of the frame 1, and a cutting machine housing 7 is installed on the outer side of the discharge pipe 4 through a cylinder lifting, and a cutting blade 8 is rotatably mounted on the inner side, and a roller 9 is rotatably mounted on the outer side of the cutting machine housing 7 through a bracket, and a second motor 10 is also fixedly mounted on the frame 1, and a screw rod 11 is fixedly mounted on the output end of the second motor 10, and a clamping assembly for fixing the steel pipe is symmetrically arranged on the outer side of the screw rod 11; The upper end of the discharge pipe 4 is connected to a protection tube 6, and a knife hole 16 is opened in the middle of the protection tube 6, and a slider 17 is symmetrically slidably arranged inside the knife hole 16, and a corrugated baffle 18 is arranged on the outer side of the slider 17, and a sealing clamping assembly is also arranged on the protection tube 6.

[0022] A driving gear 3 is fixedly mounted on the output end of the first motor 2 , and a transmission gear 5 is fixedly mounted on the outer side of the lower end of the discharge pipe 4 , and the driving gear 3 and the transmission gear 5 are meshed and connected, and a steel pipe passes through a protective tube 6 above the discharge pipe 4 .

[0023] The clamping assembly includes an adjustment seat 12 symmetrically threadedly connected to the outside of the screw rod 11, and the threads at both ends of the screw rod 11 are screwed in opposite directions. During the rotation of the screw rod 11, the two adjustment seats 12 are driven to move away from and approach each other.

[0024] A column structure is provided at the upper end of the adjustment seat 12, and a positioning piece 13 is evenly and elastically rotatably connected to the outer side of one end of the column structure close to the protective tube 6, and the cross-section of the positioning piece 13 is L-shaped. At the same time, the end of the positioning piece 13 close to the column is fitted to the end of the steel pipe, and during the rotation of the positioning piece 13, the end away from the column is fitted to the inner wall of the end of the steel pipe.

[0025] An inclined portion is provided on the outer side of the slider 17, and the roller 9 is fitted against the outer side of the inclined portion of the slider 17 during the downward movement to push the slider 17 to move, and the slider 17 is slidably connected to the knife hole 16, and the lower end of the knife hole 16 is lower than the lower end position of the steel pipe, and the corrugated baffle 18 connected to the outer side of the slider 17 is fitted against the inner wall of the knife hole 16, and the cutting blade 8 and the knife hole 16 are gap-fitted, and the position of the roller 9 is lower than the lower end position of the cutting blade 8, and the distance between the outermost ends of the inclined portions of the two sliders 17 is greater than the outer diameter of the protective tube 6.

[0026] The sealing clamping assembly includes a liquid storage bag 19 fixedly installed between the slider 17 and the fixed plate arranged at the lower part of the protective tube 6, and the inner walls at both ends of the protective tube 6 are embedded with sealing liquid bags 20 fixedly installed, and the sealing liquid bag 20 and the liquid storage bag 19 are connected by a pipeline, and during the downward movement of the slider 17, part of the liquid in the liquid storage bag 19 is transported to the sealing liquid bag 20 through the pipeline, and at the same time, the inner ring wall of the sealing liquid bag 20 is inflated and fits the steel pipe.

[0027] By adopting the above technical solution, when it is necessary to fix the pipeline, the first motor 2 is controlled to drive the driving gear 3 to rotate, so that the driving gear 3 drives the transmission gear 5 through the meshing action, so that the discharge pipe 4 drives the protective tube 6 to rotate. At this time, the pipeline is inserted into the inner side of the protective tube 6, and the protective tube 6 is subsequently controlled to rotate and adjust, so as to achieve the adjustment of the cutting angle of the steel pipe. When the steel pipe is inserted into the inner side of the protective tube 6, the second motor 10 is started, so that the screw rod 11 drives the two adjustment seats 12 to approach each other. At this time, the end of the positioning member 13 will be inserted into the inner side of the end of the steel pipe. As the adjustment seat 12 continues to move, the end of the positioning member 13 located on the outside of the steel pipe will contact the steel pipe port, thereby pushing the positioning member 13 to rotate elastically. At this time, the end of the positioning member 13 located on the inner side of the steel pipe will expand, and the expanded positioning member 13 is tightly It sticks to the inner wall of the steel pipe, thereby clamping and fixing the steel pipe. Subsequently, the control cylinder drives the cutting machine housing 7 to move downward. At this time, the roller 9 will first contact the slider 17, thereby driving the slider 17 to slide along the knife hole 16 to achieve the folding of the corrugated baffle 18. At this time, it can be ensured that part of the knife hole 16 is exposed for the cutting blade 8 to cut down. At this time, the protective tube 6 and the corrugated baffle 18 can block the cutting debris. At the same time, the slider 17 will squeeze the liquid storage capsule 19 during the sliding process, so that part of the liquid in the liquid storage capsule 19 enters the sealing liquid capsule 20 through the pipeline. At this time, the sealing liquid capsule 20 will expand and deform, and then the inner ring wall of the sealing liquid capsule 20 will stick to the outer wall of the steel pipe to achieve further clamping of the steel pipe. As the slider 17 continues to move downward, the sealing liquid capsule 20 will continue to expand and deform laterally to improve the sealing effect and ensure the cutting accuracy.

[0028] Embodiment 2: The technical content disclosed in this embodiment is a further improvement made on the basis of the above-mentioned embodiment 1. The existing steel pipe cutting machine is inconvenient to automatically clean and collect the generated debris after cutting. In order to further solve this technical problem, this embodiment discloses the following technical content, such as Figure 8-Figure 10 As shown; a cleaning component for cleaning residual debris on the inner wall is also provided on the inner side of the protective tube 6; a conveying airbag 14 made of elastic material is bonded to the inner wall of the positioning member 13, and an air pipe 15 is connected to the conveying airbag 14, and the end of the air pipe 15 faces the inner side of the steel pipe, and the conveying airbag 14 is stretched during the rotation of multiple positioning members 13, and the conveying airbag 14 is squeezed during the reset rotation of multiple positioning members 13.

[0029] The cleaning component includes a guide column 21 fixedly installed on the outside of the slider 17, and the guide column 21 is located on the inner side of the protective tube 6, and the guide column 21 and the protective tube 6 are arranged flush, and a cleaning blade 22 is arranged through the outer side of the guide column 21; the cleaning blade 22 is arranged in a circular ring structure, and two cleaning blades 22 are symmetrically arranged about the protective tube 6, and the outer wall of the cleaning blade 22 is attached to the inner wall of the protective tube 6, and at the same time, the outer wall of the cleaning blade 22 is embedded with a ball 23, and the inner wall of the protective tube 6 is provided with a spiral guide groove 601, and the ball 23 rolls along the guide groove 601.

[0030] By adopting the above technical solution, as the cutting blade 8 moves downward, the slider 17 will slide along the knife hole 16, and at the same time, the slider 17 will drive the cleaning blade 22 to rotate synchronously through the guide column 21. At this time, the ball 23 installed on the outer wall of the cleaning blade 22 rolls along the guide groove 601, thereby driving the cleaning blade 22 to slide along the guide column 21 and the protective tube 6. When the cutting is completed, as the cutting blade 8 moves upward, the slider 17 will gradually reset, so that the cleaning blade 22 is reset synchronously. At this time, the cleaning blade 22 can automatically clean the debris remaining on the inner wall of the protective tube 6, and discharge and collect it through the discharge pipe 4. When the positioning member 13 rotates and resets, it can squeeze the stretched conveying airbag 14, so that the air inhaled by the conveying airbag 14 can be blown to the inside of the steel pipe through the air pipe 15, so that the debris on the inside of the steel pipe is discharged through the cutting seam, thereby achieving sufficient cleaning and collection of the cutting debris.

[0031] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An environmentally friendly steel pipe cutting machine that prevents debris from scattering, comprising a frame (1) stably placed above the ground, a first motor (2) fixedly mounted on the upper surface of the frame (1), a discharge pipe (4) rotatably mounted through the upper surface of the frame (1), a cutting housing (7) mounted on the outer side of the discharge pipe (4) by means of a cylinder, and a cutting blade (8) rotatably mounted on the inner side, characterized in that: A roller (9) is rotatably mounted on the outer side of the cutting machine housing (7) via a bracket, and a second motor (10) is fixedly mounted on the frame (1), and a screw rod (11) is fixedly mounted on the output end of the second motor (10), and a clamping assembly for fixing the steel pipe is symmetrically arranged on the outer side of the screw rod (11); The upper end of the discharge pipe (4) is connected to a protective pipe (6), a knife hole (16) is provided in the middle of the protective pipe (6), a slider (17) is symmetrically slidably provided inside the knife hole (16), and a corrugated baffle (18) is provided on the outer side of the slider (17), a sealing clamping component is also provided on the protective pipe (6), and a cleaning component for cleaning residual waste on the inner wall of the protective pipe (6) is also provided on the inner side of the protective pipe (6).

2. The environmentally friendly steel pipe cutting machine for preventing debris from scattering according to claim 1, characterized in that: A driving gear (3) is fixedly mounted on the output end of the first motor (2), and a transmission gear (5) is fixedly mounted on the outer side of the lower end of the discharge pipe (4), and the driving gear (3) and the transmission gear (5) are meshedly connected, while a steel pipe passes through a protective pipe (6) above the discharge pipe (4).

3. The environmentally friendly steel pipe cutting machine for preventing debris from scattering according to claim 1, characterized in that: The clamping assembly comprises an adjustment seat (12) symmetrically threadedly connected to the outside of the screw rod (11), wherein the threads at both ends of the screw rod (11) are threaded in opposite directions, and the screw rod (11) drives the two adjustment seats (12) to move away from and towards each other during rotation.

4. The environmentally friendly steel pipe cutting machine for preventing debris from scattering according to claim 3 is characterized by: The upper end of the adjustment seat (12) is provided with a column structure, and the outer side of one end of the column structure close to the protection tube (6) is evenly and elastically connected to a positioning piece (13), and the cross-section of the positioning piece (13) is arranged in an L-shape, and at the same time, the end of the positioning piece (13) close to the column is fitted to the end of the steel pipe, and during the rotation of the positioning piece (13), the end of the positioning piece (13) away from the column is fitted to the inner wall of the end of the steel pipe.

5. The environmentally friendly steel pipe cutting machine for preventing debris from scattering according to claim 4, characterized in that: The inner wall of the positioning member (13) is bonded with a conveying airbag (14) made of elastic material, and an air tube (15) is connected to the conveying airbag (14), and the end of the air tube (15) faces the inner side of the steel pipe, and the conveying airbag (14) is stretched during the rotation of the plurality of positioning members (13), and the conveying airbag (14) is squeezed during the reset rotation of the plurality of positioning members (13).

6. The environmentally friendly steel pipe cutting machine for preventing debris from scattering according to claim 1, characterized in that: The outer side of the slider (17) is provided with an inclined portion, and the roller (9) is fitted to the outer side of the inclined portion of the slider (17) during the downward movement to push the slider (17) to move, and the slider (17) is slidably connected to the knife hole (16), and the lower end of the knife hole (16) is lower than the lower end of the steel pipe, the corrugated baffle (18) connected to the outer side of the slider (17) is fitted to the inner wall of the knife hole (16), and the cutting blade (8) and the knife hole (16) are clearance-matched, and the position of the roller (9) is lower than the lower end of the cutting blade (8), and the distance between the outermost ends of the inclined portions of the two sliders (17) is greater than the outer diameter of the protective tube (6).

7. The environmentally friendly steel pipe cutting machine for preventing debris from scattering according to claim 1, characterized in that: The sealing clamping assembly comprises a liquid storage capsule (19) fixedly mounted between the slider (17) and a fixed plate arranged at the bottom of the protection tube (6), and sealing liquid capsules (20) are embedded and fixedly mounted on the inner walls at both ends of the protection tube (6), and the sealing liquid capsule (20) and the liquid storage capsule (19) are connected by a pipeline, and when the slider (17) moves downward, part of the liquid in the liquid storage capsule (19) is transported to the sealing liquid capsule (20) through the pipeline, and at the same time, the inner ring wall of the sealing liquid capsule (20) is inflated and fits the steel pipe.

8. The environmentally friendly steel pipe cutting machine for preventing debris from scattering according to claim 1, characterized in that: The cleaning assembly comprises a guide column (21) fixedly mounted on the outside of the slider (17), the guide column (21) being located on the inside of the protection tube (6), the guide column (21) and the protection tube (6) being arranged flush, and a cleaning scraper (22) penetrating the outside of the guide column (21).

9. The environmentally friendly steel pipe cutting machine for preventing debris from scattering according to claim 8, characterized in that: The cleaning scraper (22) is arranged in a circular ring structure, and two cleaning scrapers (22) are symmetrically arranged with respect to the protective tube (6), and the outer wall of the cleaning scraper (22) is in contact with the inner wall of the protective tube (6), and a ball (23) is embedded in the outer wall of the cleaning scraper (22), and the inner wall of the protective tube (6) is provided with a spiral guide groove (601), and the ball (23) rolls along the guide groove (601).

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