Seamless steel tube cleaning device and cleaning method

Abstract

The invention discloses a seamless steel pipe cleaning device and method, and particularly relates to the technical field of cleaning equipment.The seamless steel pipe cleaning device comprises a base, a steel pipe bracket, a support, a reduction gearbox, a nesting sleeve, a lead screw, a nut sleeve, a fixing sleeve, a supporting arm, a brush, a runner structure and a communicating structure; and the communicating structure is used for enabling the through hole in the lowermost support arm to be communicated with the flow channel structure and enabling the flushing hole in the lowermost support arm to be disconnected from the through state of the flow channel structure. According to the cleaning device, when the brush rotates to the bottommost portion, the communicating structure enables the through hole in the bottommost supporting arm to communicate with the flow channel structure, the communicating state of the flushing hole in the supporting arm and the flow channel structure is disconnected, and therefore cleaning liquid can impact cleaning liquid accumulated on the bottom wall of an inner cavity of the seamless steel pipe through the through hole; the cleaning fluid can be washed away and away from the brush, and the brush is prevented from being affected by the cleaning fluid and bearing large resistance.

Description

Technical Field

[0001] The present invention belongs to the technical field of cleaning equipment, and particularly relates to a seamless steel pipe cleaning device and a cleaning method. Background Art

[0002] A seamless steel pipe is a steel pipe formed by piercing a whole round steel bar, without welds on its surface, and is called a seamless steel pipe. According to the production method, seamless steel pipes can be divided into hot-rolled seamless steel pipes, cold-rolled seamless steel pipes, cold-drawn seamless steel pipes, extruded seamless steel pipes, pipe jacking, etc. According to the cross-sectional shape, seamless steel pipes are divided into two types: circular and special-shaped. Special-shaped pipes have various complex shapes such as square, oval, triangular, hexagonal, melon seed-shaped, star-shaped, and finned pipes. The maximum diameter reaches 900 mm, and the minimum diameter is 4 mm. According to different uses, there are thick-walled seamless steel pipes and thin-walled seamless steel pipes. Seamless steel pipes are mainly used as oil geological drilling pipes, cracking pipes for petrochemical industry, boiler pipes, bearing pipes, and high-precision structural steel pipes for automobiles, tractors, and aviation.

[0003] During the long-term idle process of seamless steel pipes, foreign matters will accumulate on the inner wall of the steel pipes. Especially for seamless steel pipes with larger diameters, it is easier to accumulate foreign matters. In this way, when the seamless steel pipes are reused, it is necessary to clean the foreign matters on the inner wall of the steel pipes, that is, it is necessary to use cleaning equipment to clean the foreign matters on the inner wall of the seamless steel pipes.

[0004] After retrieval, a seamless steel pipe inner wall cleaning control device is disclosed in the Chinese utility model patent publication No. CN220329507U. In this technical solution, two brushes are driven by a motor to rotate, and then the inner wall of the seamless steel pipe is cleaned. However, there are still certain defects in this technical solution: during cleaning, water spraying and rinsing are usually accompanied. When rinsing, the water sprayed out will accumulate on the bottom wall of the inner cavity of the seamless steel pipe. In this way, when the brush is cleaning the bottom wall of the inner cavity of the seamless steel pipe, the brush will be resisted by the accumulated water, resulting in the bending of the brush, which will affect the cleaning effect of the brush on the bottom wall of the inner cavity of the seamless steel pipe. And as the rinsing progresses, although part of the water flows out from both ends of the seamless steel pipe, due to the large diameter and long length of the seamless steel pipe, the water accumulated on the bottom wall of the inner cavity of the seamless steel pipe cannot flow smoothly, which will lead to an increasing resistance of the brush, and even a significant decrease in the cleaning effect of the brush. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the above-mentioned disadvantages of the prior art and provide a seamless steel pipe cleaning device and a cleaning method.

[0006] The technical solution adopted to solve the above technical problem is: a seamless steel pipe cleaning device, including a base and a steel pipe bracket provided on the base, and further including: A support fixedly connected to one end of the base, a speed reducer is installed on the support, a nested part is installed in the shaft hole of the speed reducer, a lead screw is coaxially passed through the nested part, the lead screw is key-connected to the nested part, and a nut sleeve is fixedly embedded in the support, and the nut sleeve is threadedly sleeved on the lead screw; A fixed sleeve coaxially and fixedly sleeved on one end of the lead screw, a plurality of support arms are fixedly connected to the periphery of the fixed sleeve, a brush is fixedly connected to one end of the support arm away from the fixed sleeve, a flow channel structure is provided on the fixed sleeve and the lead screw together, a flushing hole communicating with the flow channel structure is opened on the wall surface of the support arm, and a through hole communicating with the flow channel structure is opened on another wall surface of the support arm; A communication structure provided on the support arm, the communication structure is used to make the through hole on the lowermost support arm communicate with the flow channel structure, and make the flushing hole on this support arm disconnect from the communication state of the flow channel structure.

[0007] Through the above technical solution, the cleaning liquid can be flushed to the inner cavity wall of the seamless steel pipe by the communication structure, and then through the rotation of the brush, the inner wall of the seamless steel pipe can be effectively cleaned. In addition, when the brush rotates to the lowermost position, the communication structure makes the through hole on the lowermost support arm communicate with the flow channel structure, and makes the flushing hole on this support arm disconnect from the communication state of the flow channel structure, so that the cleaning liquid can impact the cleaning liquid accumulated on the bottom wall of the inner cavity of the seamless steel pipe through the through hole, so that the cleaning liquid can be washed away and away from the brush, avoiding the brush being affected by the cleaning liquid and being subjected to greater resistance, resulting in a decline in the cleaning effect. In addition, only when the support arm rotates to the lowermost position, the flushing effect of the cleaning liquid is triggered, avoiding the waste of the cleaning liquid.

[0008] Further, the flow channel structure includes a water inlet hole opened in the lead screw, a rotary joint is installed at the orifice of the water inlet hole, a water outlet hole communicating with the water inlet hole is opened on the periphery of one end of the lead screw, a communication cavity communicating with the water outlet hole is opened in the fixed sleeve, a transition hole communicating with the communication cavity is opened in the support arm, and the transition hole is in a through state with the flushing hole and the through hole.

[0009] Through the above technical solution, an external water pump is connected to the water inlet hole through a pipeline, so that the cleaning liquid can enter the water outlet hole through the water inlet hole, and then enter the flushing hole or the through hole through the water outlet hole, the communication cavity and the transition hole in sequence. When sprayed out from the flushing hole, the cleaning liquid can flush the cleaning process of the brush, thereby improving the cleaning efficiency of the inner cavity wall of the seamless steel pipe. When the support arm rotates to the lowermost position, the cleaning liquid will be sprayed out from the through hole, so that the cleaning liquid has a scouring or impact effect on the cleaning liquid accumulated on the bottom wall of the inner cavity of the seamless steel pipe, so that the accumulated cleaning liquid can flow and move away from the brush.

[0010] Further, the connecting structure includes a rotating sleeve rotatably fitted inside the support arm. The rotating sleeve is coaxial with the transition hole, and a communication hole is formed at one end of the rotating sleeve facing the fixed sleeve. The communication hole communicates with the transition hole. A conversion port communicating with the communication hole is formed on the periphery of the rotating sleeve. The conversion port is used in cooperation with the flushing hole and the through hole. The support arm is provided with a rotating unit for driving the rotating sleeve to rotate.

[0011] Through the above technical solution, the rotating sleeve is driven to rotate by the rotating unit, so that the conversion port on the rotating sleeve can alternately communicate with the flushing hole and the through hole, thereby realizing the flushing of the inner cavity wall of the seamless steel pipe and the scouring of the cleaning liquid accumulated on the bottom wall of the inner cavity of the seamless steel pipe.

[0012] Further, the rotating unit includes a sliding rod slidably penetrating the support arm horizontally. A rack portion is formed on the sliding rod. A gear portion meshing with the rack portion is formed on the periphery of the rotating sleeve. An annular frame is rotatably sleeved on the periphery of the lead screw coaxially. A guide rod is fixedly connected to the end face of the annular frame. The guide rod slidably penetrates the support. A ball is rotatably fitted at one end of the sliding rod protruding out of the support arm. An arc-shaped protrusion is fixedly connected to the end face of the annular frame. The ball is used in cooperation with the arc-shaped protrusion.

[0013] Through the above technical solution, when the lead screw moves, the annular frame is driven to move horizontally synchronously. At the same time, the lead screw is in a rotating state, so that the fixed sleeve and the support arm rotate. During the rotation process, the ball on the support arm will roll into contact with the arc-shaped protrusion. When rolling into contact, the arc-shaped protrusion generates a squeezing force on the ball, so that the ball drives the sliding rod to move, and then the rack portion on the sliding rod and the gear portion on the rotating sleeve are in meshing transmission, thereby driving the rotating sleeve to rotate. In addition, the rotation of the rotating sleeve is related to the rotation position of the support arm, that is, only when the support arm rotates in the most downward direction, the ball will contact the arc-shaped protrusion, and then the rotating sleeve rotates, without the need to additionally set control elements.

[0014] Further, a limit ring is fixedly sleeved on the sliding rod. A first spring is wound around the sliding rod. The two ends of the elastic force direction of the first spring elastically abut against the support arm and the limit ring respectively.

[0015] Through the above technical solution, an elastic abutting force is generated on the limit ring by the first spring, thereby endowing the limit ring and the sliding rod with the potential energy to move away from the support arm.

[0016] Further, a rubber scraping ring is fixedly sleeved on the periphery of the annular frame.

[0017] Through the above technical solution, the outer diameter dimension of the rubber scraping ring matches the inner diameter dimension of the seamless steel pipe, so that when the lead screw generates a horizontal movement, the rubber scraping ring can enter the inner cavity of the seamless steel pipe and scrape the water on the part of the inner cavity wall of the seamless steel pipe after flushing, scraping off the cleaning liquid on the inner cavity wall of the seamless steel pipe and reducing the risk of corrosion.

[0018] Further, a spray pipe is installed at the orifice of the through hole. A connecting part is fixedly connected to the end of the spray pipe. A through cavity communicating with the spray pipe is opened in the connecting part. A piston block is slidably clamped and installed in the through cavity. A connecting pipe is fixedly connected to the end face of the piston block. The connecting pipe includes two straight pipes connected end to end. One of the straight pipes is fixedly connected to the piston block and slidably passes through the connecting part. The other straight pipe is fixedly connected to the end of the flushing pipe in a penetrating manner. Flushing grooves are opened on the wall surface of the flushing pipe. A through hole communicating with the connecting pipe is opened on the end face of the piston block.

[0019] Through the above technical solution, when the cleaning liquid enters the through hole and then enters the through cavity of the connecting part through the through hole and the spray pipe in sequence, the cleaning liquid will enter the connecting pipe through the through hole of the piston block, then enter the flushing pipe, and be sprayed out from the flushing grooves, realizing the effect of flushing and driving away the cleaning liquid accumulated on the bottom wall of the inner cavity of the seamless steel pipe. In addition, as a large amount of cleaning liquid enters the through cavity, the cleaning liquid in the through cavity cannot flow into the connecting pipe from the through hole in time, so that the cleaning liquid in the through cavity generates a thrust on the piston block, causing the piston block to move in the direction of the connecting pipe. Furthermore, when the support arm gradually rotates from bottom to top, the cleaning liquid sprayed out from the flushing grooves still flushes the bottom wall of the inner cavity of the seamless steel pipe for a certain period of time, thereby extending the flushing time of the bottom wall of the inner cavity of the seamless steel pipe to a certain extent.

[0020] Further, the sliding direction of the piston block in the through cavity is perpendicular to the axial direction of the lead screw.

[0021] Through the above technical solution, the stroke of the piston block moving along the radial direction of the lead screw is larger, thereby further extending the flushing time of the bottom wall of the inner cavity of the seamless steel pipe.

[0022] Further, a second spring is wound around a straight pipe of the connecting pipe located in the through cavity. The second spring elastically abuts against the piston block and imparts potential energy to the piston block to move in the direction away from the connecting pipe.

[0023] Through the above technical solution, an elastic abutting force is generated on the piston block by the second spring, so that when the support arm rotates upward, the piston block can be driven to quickly reset.

[0024] A method for cleaning a seamless steel pipe, which is applied to the cleaning device as described above, includes: Place the seamless steel pipe on the steel pipe bracket for positioning. The motor drives the reduction box to rotate, causing the nested part to drive the screw rod to rotate, and then the brush rotates. At the same time, the screw rod is threadedly engaged with the nut sleeve, causing the screw rod to move axially, and the brush extends into the inner cavity of the seamless steel pipe. The brush rotates to clean the inner cavity wall of the seamless steel pipe. At the same time, the water pump transports the cleaning liquid to the flow channel structure and sprays it out through the flushing holes, so that the cleaning liquid and the brush cooperate to clean the inner cavity wall of the seamless steel pipe; When the brush rotates to the lowest position, the communication structure acts, causing the through holes on the arm at the lowest position to communicate with the flow channel structure. At the same time, the communication state between the flushing holes on this arm and the flow channel structure is disconnected, so that the cleaning liquid is sprayed out through the through holes, thereby generating an impact effect on the cleaning liquid accumulated on the bottom wall of the inner cavity of the seamless steel pipe, causing the accumulated cleaning liquid to flow forward in the translation direction of the brush and reducing the accumulation amount of the cleaning liquid at the brush.

[0025] Through the above technical solution, when the brush rotates to the lowest position, the communication structure causes the through holes on the lowest arm to communicate with the flow channel structure, and disconnects the communication state between the flushing holes on this arm and the flow channel structure. Then, the cleaning liquid can impact the cleaning liquid accumulated on the bottom wall of the inner cavity of the seamless steel pipe through the through holes, so that the cleaning liquid can be washed away and away from the brush, avoiding the brush being affected by the cleaning liquid and suffering from a large resistance, resulting in a decline in the cleaning effect. In addition, only when the arm rotates to the lowest position, the effect of washing away the cleaning liquid is triggered, avoiding the waste of the cleaning liquid.

[0026] The beneficial effects of the present invention are as follows: In the present invention, the communication structure enables the cleaning liquid to wash the inner cavity wall of the seamless steel pipe, and then through the rotation of the brush, the inner wall of the seamless steel pipe can be effectively cleaned. In addition, when the brush rotates to the lowest position, the communication structure causes the through holes on the lowest arm to communicate with the flow channel structure, and disconnects the communication state between the flushing holes on this arm and the flow channel structure. Then, the cleaning liquid can impact the cleaning liquid accumulated on the bottom wall of the inner cavity of the seamless steel pipe through the through holes, so that the cleaning liquid can be washed away and away from the brush, avoiding the brush being affected by the cleaning liquid and suffering from a large resistance, resulting in a decline in the cleaning effect. In addition, only when the arm rotates to the lowest position, the effect of washing away the cleaning liquid is triggered, avoiding the waste of the cleaning liquid; In the present invention, when the screw rod moves, it synchronously drives the annular frame to move horizontally, and at the same time, the screw rod is in a rotating state, so that the fixed sleeve and the support arm rotate. During the rotation process, the ball on the support arm will roll with the arc-shaped protrusion. During the rolling contact, the arc-shaped protrusion generates an extrusion force on the ball, so that the ball drives the sliding rod to move, and then the rack part on the sliding rod and the gear part on the rotating sleeve generate meshing transmission, so that the rotating sleeve can be driven to rotate. In addition, the rotation of the rotating sleeve is related to the rotation position of the support arm, that is, only when the support arm rotates in the most downward direction, the ball will come into contact with the arc-shaped protrusion, and then the rotating sleeve will rotate, without the need to set an additional control element; In the present invention, when the cleaning liquid enters the through hole, and then enters the through cavity of the connecting part through the through hole and the nozzle in turn, the cleaning liquid will enter the connecting pipe through the through hole of the piston block, and then enter the flushing pipe, and be sprayed out from the flushing trough, so as to achieve the effect of flushing and driving away the cleaning liquid accumulated on the bottom wall of the inner cavity of the seamless steel pipe. In addition, as a large amount of cleaning liquid enters the through cavity, the cleaning liquid in the through cavity cannot flow into the connecting pipe from the through hole in time, so that the cleaning liquid in the through cavity generates a thrust on the piston block, so that the piston block moves toward the connecting pipe, and then when the support arm gradually rotates from bottom to top, the cleaning liquid sprayed from the flushing trough still keeps flushing the bottom wall of the inner cavity of the seamless steel pipe for a certain period of time, thereby achieving to a certain extent the extension of the flushing time of the bottom wall of the inner cavity of the seamless steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a seamless steel pipe cleaning device in the present invention; Figure 2 yes Figure 1 A schematic diagram of the positional relationship from another perspective; Figure 3 It is a schematic diagram of the positional relationship of the annular frame, the fixing sleeve and the supporting arm after being assembled in the present invention; Figure 4 yes Figure 3 A schematic diagram of the positional relationship from another perspective; Figure 5 yes Figure 4 A magnified schematic diagram of the local structure at point A; Figure 6 It is a schematic diagram of the positional relationship among the fixed sleeve, the support arm and the brush after being assembled in the present invention; Figure 7 yes Figure 6 Schematic diagram of the positional relationship after the middle part of the structure is cut open; Figure 8 yes Figure 6 A schematic diagram of the positional relationship from another perspective; Figure 9 yes Figure 8 Schematic diagram of the explosion decomposition of the structure; Figure 10 is Figure 9 An enlarged schematic view of the local structure at position B in Figure 11 A schematic diagram showing the positional relationship after the connection pipe, connection part, and spray pipe in the present invention are assembled; Figure 12 is Figure 11 A schematic diagram showing the positional relationship after the structure in is sectioned; Figure 13 A schematic diagram of the structure of the fixing sleeve in the present invention; Figure 14 is Figure 13 A schematic diagram showing the positional relationship after the structure in is sectioned; Figure 15 A schematic diagram of the structure of the rotating sleeve in the present invention.

[0028] Reference numerals: 1, base; 2, steel pipe bracket; 3, seamless steel pipe; 4, annular frame; 5, support; 6, motor; 7, guide rod; 8, lead screw; 9, reduction gearbox; 10, nut sleeve; 11, support arm; 12, brush; 13, fixing sleeve; 14, rubber scraping ring; 15, nesting; 16, flushing hole; 17, spray pipe; 18, connection pipe; 19, flushing pipe; 20, connection part; 21, arc-shaped protruding part; 22, ball; 23, sliding rod; 24, first spring; 25, limiting ring; 26, flushing groove; 27, rotating sleeve; 28, through hole; 29, transition hole; 30, connection cavity; 31, conversion port; 32, connection hole; 33, gear part; 34, rack part; 35, piston block; 36, second spring; 37, installation cavity. Detailed implementation manners

[0029] In order to make the objectives, technical solutions, and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] As shown in Figures 1 - 15As shown in the figure, this embodiment provides a seamless steel pipe cleaning device, including a base 1. On both sides of the base 1 in the length direction, steel pipe brackets 2 are welded. The upper part of the steel pipe bracket 2 is in a V-shaped structure. The V-shaped structures of the two steel pipe brackets 2 are used to place the seamless steel pipe 3. After the seamless steel pipe 3 is placed on the two steel pipe brackets 2, the upper surface of the seamless steel pipe 3 can be pressed by structures such as a cylinder, so that the seamless steel pipe 3 remains stable during the cleaning process. At one end of the base 1 in the length direction, a support 5 is welded. A reduction gearbox 9 is installed on the support 5 by means of screws. A motor 6 is installed on the reduction gearbox 9. The motor shaft of the motor 6 is used to drive the input shaft of the reduction gearbox 9 to rotate. A nested sleeve 15 is fixedly installed in the shaft hole of the output shaft of the reduction gearbox 9. A lead screw 8 is coaxially inserted through the nested sleeve 15. The lead screw 8 is key-connected to the nested sleeve 15. A nut sleeve 10 is fixedly embedded in the support 5. The nut sleeve 10 is threadedly sleeved on the lead screw 8. When the output shaft of the reduction gearbox 9 rotates, it will drive the nested sleeve 15 to rotate. The inner hole wall of the nested sleeve 15 is key-connected to the periphery of the lead screw 8. In this way, when the nested sleeve 15 rotates, it drives the lead screw 8 to rotate, and at the same time, the lead screw 8 can also translate along its own axial direction; One end of the lead screw 8 facing the steel pipe bracket 2 is coaxially and fixedly sleeved with a fixed sleeve 13. A plurality of support arms 11 are fixedly connected to the periphery of the fixed sleeve 13. One end of the support arm 11 far from the fixed sleeve 13 is fixedly connected with a brush 12. The other end of the lead screw 8 is coaxially provided with a water inlet hole in the form of a blind hole. A rotary joint (the rotary joint is a common structure in the prior art and will not be described in detail here) is installed at the orifice of the water inlet hole. The rotary joint is connected to an external water pump through a pipeline. The water pump transports the cleaning liquid into the rotary joint, and then the rotary joint transports it into the water inlet hole. A plurality of water outlet holes are provided on the periphery of the lead screw 8 at the end where the fixed sleeve 13 is provided. The water outlet holes penetrate the water inlet hole. A communication cavity 30 communicating with the water outlet holes is opened in the fixed sleeve 13. A transition hole 29 communicating with the communication cavity 30 is opened in the support arm 11. In addition, a flushing hole 16 communicating with the transition hole 29 is opened on the wall surface of the support arm 11 (the side wall surface corresponding to the radial direction of the lead screw 8), and a through hole 28 communicating with the transition hole 29 is opened on the other wall surface of the support arm 11 (the wall surface facing the outside of the axial direction of the lead screw 8). The transition hole 29 is in a through state with the flushing hole 16 and the through hole 28; An installation cavity 37 is opened in the support arm 11. A rotatable rotating sleeve 27 is embedded in the installation cavity 37. The rotating sleeve 27 is coaxial with the transition hole 29, and a communication hole 32 is opened at one end of the rotating sleeve 27 facing the fixed sleeve 13. The communication hole 32 communicates with the transition hole 29. A conversion port 31 communicating with the communication hole 32 is opened on the periphery of the rotating sleeve 27. The conversion port 31 is used in cooperation with the flushing hole 16 and the through hole 28; A sliding rod 23 is horizontally slidably penetrated through the support arm 11. Further, the longitudinal section of the sliding rod 23 is rectangular. The sliding rod 23 is provided with a rack portion 34. A gear portion 33 meshing with the rack portion 34 is provided on the periphery of the rotating sleeve 27. An annular frame 4 is coaxially rotatably sleeved on the periphery of the lead screw 8. A guide rod 7 is fixedly connected to the end face of the annular frame 4. The guide rod 7 is slidably penetrated through the support 5. A ball 22 is rotatably embedded at one end of the sliding rod 23 passing through the support arm 11. An arc-shaped protrusion 21 is fixedly connected to the end face of the annular frame 4. The ball 22 is used in cooperation with the arc-shaped protrusion 21. When the ball 22 rolls from the end face of the annular frame 4 to the surface of the arc-shaped protrusion 21, the ball 22 will be squeezed by the surface of the arc-shaped protrusion 21, so that the ball 22 drives the sliding rod 23 to move away from the annular frame 4, and then the rack portion 34 on the sliding rod 23 meshes with the gear portion 33 on the rotating sleeve 27 to generate meshing transmission, and then the rotating sleeve 27 can be driven to rotate. When the rotating sleeve 27 rotates, the conversion port 31 will generate a position conversion, so that the conversion port 31 can alternately communicate with the flushing hole 16 and the through hole 28. A limiting ring 25 is fixedly sleeved on the sliding rod 23. A first spring 24 is wound around the sliding rod 23. The two ends of the elastic force direction of the first spring 24 elastically abut against the support arm 11 and the limiting ring 25 respectively. In addition, a rubber scraping ring 14 is fixedly sleeved on the periphery of the annular frame 4. The outer diameter dimension of the rubber scraping ring 14 matches the inner diameter dimension of the seamless steel pipe 3; A spray pipe 17 is installed at the opening of the through hole 28. A connecting portion 20 is fixedly connected to the end of the spray pipe 17. A through cavity communicating with the spray pipe 17 is opened in the connecting portion 20. A piston block 35 is slidably clamped and installed in the through cavity. A connecting pipe 18 is fixedly connected to the end face of the piston block 35. The connecting pipe 18 includes two straight pipes connected end to end. One of the straight pipes is fixedly connected to the piston block 35 and slidably passes through the connecting portion 20. The other straight pipe is fixedly connected to the end of the flushing pipe 19 through the connecting portion 20 away from the connecting portion 20. Flushing grooves 26 are formed on the wall surface of the flushing pipe 19. A through hole communicating with the connecting pipe 18 is opened on the end face of the piston block 35. The sliding direction of the piston block 35 in the through cavity is perpendicular to the axial direction of the lead screw 8. A second spring 36 is wound around one of the straight pipes of the connecting pipe 18 located in the through cavity. The second spring 36 elastically abuts against the piston block 35 and gives the piston block 35 the potential energy to move away from the connecting pipe 18.

[0031] The working principle of this embodiment is as follows: Lift the seamless steel pipe 3 and hoist it into the V-shaped structure of two steel pipe brackets 2. Additionally, an external cylinder can be further used to compress the seamless steel pipe 3. Then, start the motor 6. The motor shaft of the motor 6 drives the input shaft of the speed reducer 9 to rotate, thereby causing the output shaft of the speed reducer 9 to rotate, making the nest 15 rotate. When the nest 15 rotates, the lead screw 8 will rotate. When the lead screw 8 rotates, it will drive the fixed sleeve 13 to rotate, causing the support arm 11 to rotate. At the same time, the lead screw 8 is threadedly engaged with the nut sleeve 10. Thus, while the lead screw 8 rotates, it moves in the direction of the seamless steel pipe 3, enabling the brush 12 and the rubber scraping ring 14 to extend into the seamless steel pipe 3. As the lead screw 8 rotates, the brush 12 scrubs the inner cavity wall of the seamless steel pipe 3; Meanwhile, an external water pump transports the cleaning liquid into the rotary joint, and then the rotary joint transports it into the water inlet hole. Then, it successively enters the flushing hole 16 through the water outlet hole, the communication cavity 30, and the transition hole 29. Thus, the cleaning liquid ejected from the flushing hole 16 flushes the inner cavity wall of the seamless steel pipe 3. In cooperation with the scrubbing of the brush 12, the impurities on the inner cavity wall of the seamless steel pipe 3 can be more effectively cleaned. Additionally, when the lead screw 8 moves horizontally, the rubber scraping ring 14 can enter the inner cavity of the seamless steel pipe 3 and scrape the water from the washed part of the inner cavity wall of the seamless steel pipe 3, scraping off the cleaning liquid on the inner cavity wall of the seamless steel pipe 3 and reducing the risk of rust; When the support arm 11 rotates to the lowest position, the corresponding ball 22 of the support arm 11 rolls from the end face of the annular frame 4 to the surface of the arc-shaped protrusion 21 and makes rolling contact with the arc-shaped protrusion 21. During the rolling contact, the arc-shaped protrusion 21 exerts an extrusion force on the ball 22, causing the ball 22 to drive the sliding rod 23 to move. Thus, the rack portion 34 on the sliding rod 23 and the gear portion 33 on the rotating sleeve 27 are engaged in transmission, which can drive the rotating sleeve 27 to rotate, making the conversion port 31 of the rotating sleeve 27 corresponding to the support arm 11 rotate to communicate with the through hole 28. At this time, the flushing hole 16 of the support arm 11 is in a closed state, and the cleaning liquid will enter the through hole 28 from the transition hole 29 and the communication hole 32; When the cleaning liquid enters the through hole 28, and then successively enters the through cavity of the communication part 20 from the through hole 28 and the spray pipe 17, the cleaning liquid will enter the communication pipe 18 through the through hole of the piston block 35, and then enter the flushing pipe 19 and be sprayed out from the flushing water groove 26, achieving the effect of scouring and driving the cleaning liquid accumulated on the inner cavity bottom wall of the seamless steel pipe 3. In addition, as a large amount of cleaning liquid enters the through cavity, the cleaning liquid in the through cavity cannot flow into the communication pipe 18 from the through hole in time, so that the cleaning liquid in the through cavity generates a thrust on the piston block 35, causing the piston block 35 to move in the direction of the communication pipe 18. Furthermore, when the support arm 11 gradually rotates from bottom to top, the piston block 35 gradually moves in the direction of the communication pipe 18 (or the rear side direction of the rotation direction of the support arm 11), so that the cleaning liquid sprayed out from the flushing water groove 26 still scours the inner cavity bottom wall of the seamless steel pipe 3 for a certain period of time. Thus, to a certain extent, the scouring time of the inner cavity bottom wall of the seamless steel pipe 3 is prolonged, and the scouring effect on the accumulated flushing liquid is improved. After the seamless steel pipe 3 is cleaned, the water pump is turned off, and at the same time, the motor 6 rotates in the reverse direction until the brush 12 moves out of the seamless steel pipe 3.

[0032] The above is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A seamless steel pipe cleaning device, comprising a base (1) and a steel pipe bracket (2) provided on the base (1), characterized in that, Further comprising: A support (5) fixedly connected to one end of the base (1), a speed reducer (9) is installed on the support (5), a nested sleeve (15) is installed in the shaft hole of the speed reducer (9), a lead screw (8) is coaxially passed through the nested sleeve (15), the lead screw (8) is key-connected to the nested sleeve (15), a nut sleeve (10) is fixedly embedded in the support (5), and the nut sleeve (10) is threadedly sleeved on the lead screw (8); A fixed sleeve (13) coaxially and fixedly sleeved on one end of the lead screw (8), a plurality of support arms (11) are fixedly connected to the periphery of the fixed sleeve (13), a brush (12) is fixedly connected to the end of the support arm (11) away from the fixed sleeve (13), a flow channel structure is provided in the fixed sleeve (13) and the lead screw (8), a flushing hole (16) communicating with the flow channel structure is opened on the wall surface of the support arm (11), and a through hole (28) communicating with the flow channel structure is opened on another wall surface of the support arm (11); A communication structure provided on the support arm (11), the communication structure is used to make the through hole (28) on the lowermost support arm (11) communicate with the flow channel structure, and disconnect the communication state of the flushing hole (16) on this support arm (11) from the flow channel structure.

2. The seamless steel pipe cleaning device according to claim 1, characterized in that, The flow channel structure includes a water inlet hole opened in the lead screw (8), a rotary joint is installed at the orifice of the water inlet hole, a water outlet hole communicating with the water inlet hole is opened on the periphery of one end of the lead screw (8), a communication cavity (30) communicating with the water outlet hole is opened in the fixed sleeve (13), a transition hole (29) communicating with the communication cavity (30) is opened in the support arm (11), and the transition hole (29) is in a through state with the flushing hole (16) and the through hole (28).

3. The seamless steel pipe cleaning device according to claim 2, characterized in that, The communication structure includes a rotating sleeve (27) rotatably embedded in the support arm (11), the rotating sleeve (27) is coaxial with the transition hole (29), and a communication hole (32) is opened at one end of the rotating sleeve (27) facing the fixed sleeve (13), the communication hole (32) communicates with the transition hole (29), a conversion port (31) communicating with the communication hole (32) is opened on the periphery of the rotating sleeve (27), the conversion port (31) is used in cooperation with the flushing hole (16) and the through hole (28), and the support arm (11) is provided with a rotating unit for driving the rotating sleeve (27) to rotate.

4. A seamless steel pipe cleaning device according to claim 3, characterized in that, The rotating unit includes a sliding rod (23) horizontally slidably passing through the support arm (11), a rack portion (34) is opened on the sliding rod (23), a gear portion (33) meshing with the rack portion (34) is opened on the periphery of the rotating sleeve (27), a ring-shaped frame (4) is coaxially rotatably sleeved on the periphery of the lead screw (8), a guide rod (7) is fixedly connected to the end face of the ring-shaped frame (4), the guide rod (7) slidably passes through the support (5), a ball (22) is rotatably embedded at the end of the sliding rod (23) passing through the support arm (11), an arc-shaped protrusion (21) is fixedly connected to the end face of the ring-shaped frame (4), and the ball (22) is used in cooperation with the arc-shaped protrusion (21).

5. A seamless steel pipe cleaning device according to claim 4, characterized in that, The sliding rod (23) is fixedly sleeved with a limit ring (25). The sliding rod (23) is wound with a first spring (24). The two ends of the elastic force direction of the first spring (24) elastically abut against the support arm (11) and the limit ring (25) respectively.

6. A seamless steel pipe cleaning device according to claim 4, characterized in that, A rubber scraping ring (14) is fixedly sleeved on the periphery of the annular frame (4).

7. A seamless steel pipe cleaning device according to claim 1, characterized in that, A spray pipe (17) is installed at the mouth of the through hole (28). A connecting part (20) is fixedly connected to the end of the spray pipe (17). A through cavity communicating with the spray pipe (17) is opened in the connecting part (20). A piston block (35) is slidably engaged and installed in the through cavity. A connecting pipe (18) is fixedly connected to the end face of the piston block (35). The connecting pipe (18) includes two straight pipes communicating end to end. One of the straight pipes is fixedly connected to the piston block (35) and slidably passes through the connecting part (20). The other straight pipe is fixedly connected with a flushing pipe (19) at the end far away from the connecting part (20). Flushing grooves (26) are opened on the wall surface of the flushing pipe (19). A through hole communicating with the connecting pipe (18) is opened on the end face of the piston block (35).

8. A seamless steel pipe cleaning device according to claim 7, characterized in that, The sliding direction of the piston block (35) in the through cavity is perpendicular to the axial direction of the lead screw (8).

9. A seamless steel pipe cleaning device according to claim 7, characterized in that, A second spring (36) is wound on one of the straight pipes of the connecting pipe (18) located in the through cavity. The second spring (36) elastically abuts against the piston block (35) and imparts potential energy to the piston block (35) to move in a direction away from the connecting pipe (18).

10. A seamless steel pipe cleaning method, applied to the cleaning device described in any one of claims 1 to 9, characterized in that, Including: Place the seamless steel pipe (3) on the steel pipe bracket (2) for positioning. The motor (6) drives the reduction box (9) to rotate, so that the nest (15) drives the lead screw (8) to rotate, and then the brush (12) rotates. At the same time, the lead screw (8) is threadedly engaged with the nut sleeve (10), so that the lead screw (8) generates an axial movement, and the brush (12) extends into the inner cavity of the seamless steel pipe (3). The brush (12) rotates to clean the inner cavity wall of the seamless steel pipe (3). At the same time, the water pump conveys the cleaning liquid to the flow channel structure and sprays it out from the flushing holes (16), so that the cleaning liquid and the brush (12) cooperate to clean the inner cavity wall of the seamless steel pipe (3); When the brush (12) rotates to the lowest position, the communication structure acts, so that the through hole (28) on the support arm (11) at the lowest position communicates with the flow channel structure. At the same time, the through state of the flushing hole (16) on this support arm (11) and the flow channel structure is disconnected, so that the cleaning liquid is sprayed out from the through hole (28), thereby generating an impact effect on the cleaning liquid accumulated on the bottom wall of the inner cavity of the seamless steel pipe (3), so that the accumulated cleaning liquid flows forward in the translation direction of the brush (12), reducing the accumulation amount of the cleaning liquid at the brush (12).

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