A galvanized pipe washing device

Abstract

This invention relates to the field of galvanized pipe processing technology and discloses a galvanized pipe washing device, including a washing tank, a feeding mechanism, a transport mechanism, a draining platform, a transfer mechanism, and a discharging mechanism. The washing tank is located between the feeding mechanism and the draining platform. An inclined plate is provided on the draining platform. The pipe is transported from the feeding mechanism to the washing tank via the transport mechanism and then transported onto the inclined plate. A gantry is provided at both ends of the draining platform. An alignment internal blowing mechanism and an alignment rotating drive mechanism are respectively provided at the two gantry. The alignment internal blowing mechanism and the alignment rotating drive mechanism synchronously clamp the pipe. A truss is provided on the gantry, and a movable external blowing mechanism is provided on the truss. The transfer mechanism transfers the pipe on the inclined plate to the discharging mechanism. This invention forms an automated collaborative operation system, effectively solving the problems of low automation, incomplete cleaning, and low efficiency in traditional galvanized pipe washing, and realizing continuous processing.

Description

Technical Field

[0001] This invention relates to the field of galvanized pipe processing technology, specifically to a galvanized pipe water washing device. Background Technology

[0002] In the galvanized pipe production process, the pretreatment process is a crucial step in ensuring galvanizing quality. Its core objective is to remove oxide scale, rust, oil, and impurities from the pipe surface, laying the foundation for the uniform adhesion and firm bonding of the subsequent galvanized layer. This process typically involves multiple steps. First, acid pickling removes the oxide layer and rust from the pipe surface. Then, alkaline washing neutralizes the acid pickling residue and removes oil. Following this, a water washing stage is performed, using clean water to rinse away any remaining acid, alkaline solutions, and reactive impurities from the pipe surface. In some production scenarios, passivation treatment is added after water washing to further enhance the corrosion resistance of the galvanized pipe. As an important component of the pretreatment process, the water washing stage directly affects the subsequent passivation effect and the final galvanizing quality. The thoroughness and efficiency of its cleaning are critical to the overall capacity of the galvanized pipe production line.

[0003] Currently, most small and medium-sized galvanized pipe manufacturers still use traditional semi-automatic operation modes in the water washing process. The core equipment is ordinary cement or steel water tanks. During operation, multiple galvanized pipes to be cleaned are transported in batches to the water tank using overhead cranes or special lifting tools. Cleaning is achieved through simple soaking. The specific operation process is as follows: first, the pipes to be washed are neatly stacked on the lifting tool by hand. The overhead crane is then used to lift the lifting tool and pipes into the water tank together. After soaking for a preset time, the pipes are lifted out by the overhead crane and transferred to a designated area to drain the water, completing a single water washing operation.

[0004] However, this traditional water washing method has significant drawbacks and can no longer meet the demands of modern galvanized pipe production for efficient and continuous operation. These drawbacks are mainly reflected in the following aspects:

[0005] 1. Inability to achieve automated continuous operation: The entire water washing process relies excessively on the coordinated operation of manual labor and cranes. From stacking pipes, hoisting them into the pool, soaking and timing, to hoisting them out and draining, each step requires manual intervention. Moreover, the connection between each link depends on manual judgment. It is impossible to form an automated production line connection with the preceding pickling and alkaline washing processes and the subsequent passivation and galvanizing processes. This results in obvious breaks in the production process, making it difficult to adapt to large-scale, continuous production rhythms and resulting in low processing efficiency.

[0006] 2. Unstable pipe positioning and cleaning effect: During hoisting, pipes are prone to displacement due to shaking or collision of the hoisting equipment, resulting in a decrease in the neatness of stacking. Some pipes may overlap or tilt, and after entering the water tank, they cannot fully contact the water, creating cleaning blind spots. At the same time, the water in ordinary water tanks has poor flow, and the concentration of impurities in the water increases after long-term use, gradually reducing the cleaning effect. Regular water replacement is required, which not only increases water consumption but also causes production interruptions due to water replacement, further affecting operational efficiency.

[0007] 3. Poor inter-process transfer connection: After washing, the pipes need to be hoisted to an independent area to drain and cannot be directly transferred to the next process. Moreover, the draining process relies on natural dripping, which takes a long time and requires additional space and manpower to supervise, resulting in increased inter-process transfer time, extended overall production cycle, and further restricting the capacity release of the entire production line. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to overcome the above-mentioned difficulties and provide a galvanized pipe washing device.

[0009] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: a galvanized pipe washing device, including a washing tank, a feeding mechanism, a transport mechanism, a draining platform, a transfer mechanism, and a discharging mechanism. The feeding mechanism and the discharging mechanism both include a frame, on which multiple conveying rollers are provided. The washing tank is located between the feeding mechanism and the draining platform. An inclined plate is provided on the draining platform. The pipe is transported from the feeding mechanism to the washing tank by the transport mechanism, and then transported to the inclined plate. A gantry is provided at both ends of the draining platform. An alignment internal blowing mechanism and an alignment rotation drive mechanism are respectively provided at the two gantry. The alignment internal blowing mechanism and the alignment rotation drive mechanism synchronously clamp the pipe. The alignment internal blowing mechanism blows the inner wall of the pipe, and the alignment rotation drive mechanism drives the pipe to rotate. A truss is provided on the gantry, and a movable external blowing mechanism is provided on the truss. The movable external blowing mechanism blows the outer wall of the pipe. The transfer mechanism transfers the pipe on the inclined plate to the discharging mechanism.

[0010] As an improvement: the transport mechanism includes a drive mechanism, a fixed frame, a lifting frame, a chain conveyor belt and a hydraulic cylinder. The fixed frame is located in the cleaning tank. One end of the lifting frame is hinged to the end of the fixed frame, and the other end extends into the frame of the feeding mechanism and is lower than the top surface of the conveyor roller. The hydraulic cylinder drives the lifting frame to rotate, and the drive mechanism drives the chain conveyor belt to move on the fixed frame and the lifting frame.

[0011] As an improvement: a water circulator is provided outside the cleaning tank. The input and output ends of the water circulator are respectively provided with an inlet pipe and an outlet pipe. The ends of the inlet pipe and the outlet pipe extend into the inside of the cleaning tank and are located at opposite corners of the cleaning tank.

[0012] As an improvement: another output end of the water circulator is provided with a pressurized water pipe, which is provided with multiple sets of branch pipes. The branch pipes extend into the cleaning tank and are provided with pressurized nozzles at their ends. Sensors are provided on the walls of the cleaning tank, and each set of branch pipes is provided with a solenoid valve controlled by the sensor.

[0013] As an improvement: Both the alignment internal blowing mechanism and the alignment rotary drive mechanism include an alignment mechanism, which includes a transverse moving platform and a hydraulic cylinder two. A guide plate is provided on the gantry. The hydraulic cylinder two drives the transverse moving platform to move along the pipe axis below the guide plate. The alignment internal blowing mechanism and the alignment rotary drive mechanism are respectively provided with multiple sealing cones and multiple exhaust cones. Spring one and spring two are respectively provided on the rear side of the sealing cone and the exhaust cone. Multiple stepped platforms are provided on the front side of the transverse moving platform. Spring one is connected to the stepped platform. A blocking rod is provided on the transverse moving platform.

[0014] As an improvement: a splined shaft is provided on the rear side of the sealing cone, a positioning ring is provided rotatably inside the transverse platform, the inner side of the positioning ring is provided with a spline groove that mates with the splined shaft, the alignment inner blowing mechanism is provided with an air pipe that connects to an external compressed air pipeline, multiple hoses are provided on the air pipe, the end of the hose is provided with a rotating connector, the rotating connector is rotatably connected to the rear end of the splined shaft, and the sealing cone and the inner through hole of the splined shaft are connected to the hoses.

[0015] As an improvement: a second splined shaft is provided on the rear side of the exhaust cone, a second positioning ring is provided rotatably inside the transverse stage, the inner side of the second positioning ring is provided with a spline groove that mates with the second splined shaft, the alignment drive mechanism is provided with a power box, the power box is provided with a drive mechanism, the drive mechanism includes a second motor and multiple drive sprockets, the second motor drives the multiple drive sprockets to rotate in the power box through a chain transmission structure, the inner side of the drive sprockets is provided with a spline groove that mates with the second splined shaft.

[0016] As an improvement: the mobile external spraying mechanism includes a mobile vehicle that travels on a truss, a riser connected to an external compressed air pipeline is suspended below the mobile vehicle, a horizontal pipe is connected to the lower end of the riser, and multiple sets of pressurized nozzles are provided on the horizontal pipe.

[0017] The beneficial effects of this invention compared to existing technologies are as follows: This invention integrates the entire process of feeding, transportation, cleaning, draining, blowing, transfer, and discharging into an automated collaborative operation system. This effectively solves the problems of low automation, incomplete cleaning, and low efficiency in traditional galvanized pipe washing, achieving continuous processing. While ensuring cleaning quality, it significantly improves production efficiency and provides reliable equipment support for the automation upgrade of galvanized pipe pretreatment processes. Specifically:

[0018] 1. The feeding mechanism realizes the orderly feeding of pipes through conveyor rollers and limit baffles. The transportation mechanism is driven by chain conveyor belt and hydraulic cylinder to complete the smooth transfer of pipes between the feeding end, washing pool and dewatering platform. The transfer mechanism is connected with the discharge mechanism to form a production line operation without human intervention, which completely changes the traditional intermittent production mode that relies on cranes and significantly improves processing efficiency.

[0019] 2. The cleaning tank uses a water circulator to achieve water circulation filtration and precise high-pressure rinsing to remove stubborn impurities from the pipe surface; the alignment inner spraying mechanism at the dewatering platform, together with the sealing cone and high-pressure airflow, sprays the inner wall of the pipe without dead angles; the alignment drive mechanism drives the pipe to rotate at a uniform speed; the moving outer spraying mechanism moves along the truss and sprays the outer wall of the pipe in all directions. The internal and external coordination ensures the cleaning effect and avoids the subsequent galvanizing quality being affected by incomplete cleaning.

[0020] 3. The alignment mechanism uses a spring and frustum structure to achieve elastic clamping and precise positioning of pipes with different inner diameters and lengths, preventing the pipes from shifting or being damaged during rotation; the conveyor belt baffle and the sensor-controlled solenoid valve in the cleaning tank of the transport mechanism ensure precise coordination of the actions of each link, adapting to the processing needs of various specifications of galvanized pipes and reducing equipment replacement and debugging costs. Attached Figure Description

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

[0022] Figure 2 This is a cross-sectional view of the present invention.

[0023] Figure 3 This is a schematic diagram of the cleaning tank of the present invention.

[0024] Figure 4 This is a cross-sectional view of the cleaning tank of the present invention.

[0025] Figure 5 This is a schematic diagram of the transportation mechanism of the present invention.

[0026] Figure 6 This is an exploded view of the transportation mechanism of the present invention.

[0027] Figure 7 This is a cross-sectional view of the transportation mechanism of the present invention.

[0028] Figure 8 This is a schematic diagram of the structure of the drain platform of the present invention.

[0029] Figure 9 This is an exploded view of the drain platform of the present invention.

[0030] Figure 10 This is a schematic diagram of the alignment internal spraying mechanism and alignment rotary drive mechanism of the present invention.

[0031] Figure 11 This is a schematic diagram of the internal spraying mechanism of the present invention.

[0032] Figure 12 This is an exploded view of the in-position spraying mechanism of the present invention.

[0033] Figure 13 This is a cross-sectional view of the in-position blowing mechanism of the present invention.

[0034] Figure 14 This is a schematic diagram of the alignment and rotation mechanism of the present invention.

[0035] Figure 15 This is an exploded view of the alignment and rotation mechanism of the present invention.

[0036] Figure 16 This is a schematic diagram of the main structure of the alignment and rotation mechanism of the present invention.

[0037] Figure 17 This is a schematic diagram of the structure of the movable external jet blowing mechanism of the present invention.

[0038] As shown in the figure: 1. Feeding mechanism; 2. Washing tank; 3. Transport mechanism; 4. Draining platform; 5. Alignment internal spraying mechanism; 6. Alignment rotary drive mechanism; 7. Moving external spraying mechanism; 8. Transfer mechanism; 9. Discharge mechanism; 11. Frame; 12. Conveyor roller; 13. Limiting baffle; 21. Water circulator; 22. Water inlet pipe; 23. Water outlet pipe; 24. Pressurized water pipe; 241. Branch pipe; 242. Pressurized nozzle; 25. Mounting frame; 26. Sensor; 27. Water inlet tank; 31. Drive mechanism; 311. Motor 1; 312. Gearbox; 313. Drive shaft; 314. Drive roller; 32. Fixed frame; 321. Horizontal section; 322. Climbing section; 323. Inclined section; 33. Lifting frame; 331. Liquid collection hood; 34. Chain conveyor belt; 341. Baffle; 35. Hydraulic cylinder 1; 36. Support plate; 37. Guide roller; 41. Inclined platform; 42. Liquid collection tank; 43. Inclined plate; 44. Gantry; 45. Truss; 46. Guide plate; 51. Sealing cone; 511. Splined shaft 1; 512. Spring 1; 52. Transverse platform; 521. Stepped platform; 522. Blocking bar; 523. Vertical pole; 53. Hydraulic cylinder 2; 54. Air pipe; 541. Hose; 5 42. Rotary connector; 55. Positioning swivel ring one; 61. Exhaust cone; 611. Splined shaft two; 612. Spring two; 62. Power box; 63. Rotary drive mechanism; 631. Motor two; 632. Gear one; 633. Gear two; 634. Sprocket assembly; 635. Drive sprocket; 64. Positioning swivel ring two; 71. Moving carriage; 72. Vertical pipe; 73. Horizontal pipe; 74. Pressurized nozzle. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings.

[0040] Combined with appendix Figure 1 Appendix Figure 2 and attached Figure 8 As shown, a galvanized pipe washing device includes a washing tank 2, a feeding mechanism 1, a conveying mechanism 3, a draining platform 4, a transfer mechanism 8, and a discharging mechanism 9. Both the feeding mechanism 1 and the discharging mechanism 9 include a frame 11 with multiple conveying rollers 12 mounted on it. A limiting baffle 13 is located at the tail of the frame 11. The washing tank 2 is situated between the feeding mechanism 1 and the draining platform 4. An inclined plate 43 is mounted on the draining platform 4. The pipe is conveyed from the feeding mechanism 1 to the washing tank 2 via the conveying mechanism 3, and then onto the inclined plate 43. The draining platform 4 is equipped with a gantry 44 at both ends. The two gantry 44 are respectively equipped with an internal alignment blowing mechanism 5 and an internal alignment rotation mechanism 6. The internal alignment blowing mechanism 5 and the internal alignment rotation mechanism 6 clamp the pipe synchronously. The internal alignment blowing mechanism 5 blows the inner wall of the pipe, and the internal alignment rotation mechanism 6 drives the pipe to rotate. The gantry 44 is equipped with a truss 45, and the truss 45 is equipped with a movable external blowing mechanism 7. The movable external blowing mechanism 7 blows the outer wall of the pipe. The transfer mechanism 8 transfers the pipe on the inclined plate 43 to the discharge mechanism 9.

[0041] This galvanized pipe washing device mainly solves the problems of the inability to achieve continuous cleaning operations, difficulty in pipe transportation and positioning during the continuous cleaning process, incomplete cleaning of the inner and outer walls, low drainage efficiency after cleaning, and poor connection between various processes. Through the coordinated action of the feeding mechanism 1, the transportation mechanism 3, the cleaning tank 2, the draining platform 4, and the supporting spraying mechanism, transfer mechanism 8, and discharge mechanism 9, the device achieves fully automated processing of the pipe from feeding to cleaning, draining, transfer to discharge, ensuring cleaning effect and production efficiency.

[0042] In the specific working process, the pipes are first fed in an orderly manner through the feeding mechanism 1. The frame 11 of the feeding mechanism 1 provides support for the overall structure. Multiple conveying rollers 12 rotate under power drive, smoothly conveying the pipes to be cleaned forward. The limiting baffle 13 at the tail of the frame 11 can prevent the pipes from exceeding the preset position due to inertia during the conveying process, ensuring accurate positioning of the pipes and preparing for the subsequent gripping and conveying by the transport mechanism 3. When the pipes reach the end of the feeding mechanism 1, the transport mechanism 3 starts and smoothly transfers the pipes from the feeding mechanism 1 to the cleaning tank 2. The cleaning tank 2 stores water for cleaning the pipes. The pipes are washed in the cleaning tank 2 to remove impurities, passivation liquid, etc. attached to the surface.

[0043] After cleaning, the pipes are transported by the transport mechanism 3 to the inclined plate 43 of the draining platform 4. The inclined structure of the inclined plate 43 allows the residual water on the surface of the pipes to flow downwards naturally under the action of gravity, achieving initial drainage. The water then rolls freely into the working area of ​​the alignment inner spray mechanism 5 and the alignment rotary drive mechanism 6. The draining platform 4 is provided with an inclined platform 41 at the top and a liquid collection tank 42 at the bottom side of the inclined platform 41. The cleaning tank 2 is provided with a water inlet trough 27 that communicates with the liquid collection tank 42. The water flowing down from the pipes is collected by the inclined platform 41 and the liquid collection tank 42 and then discharged back into the cleaning tank 2 through the water inlet trough 27.

[0044] The alignment inner spraying mechanism 5 and the alignment rotary drive mechanism 6 on the two end gantry 44 of the draining platform 4 start synchronously. The two cooperate to clamp and fix the pipe and make the pipe rise away from the inclined plate 43 and rotate. On the one hand, this ensures the stability of the pipe during the spraying process and avoids the pipe from shifting and affecting the cleaning effect. On the other hand, it is conducive to cooperating with the alignment inner spraying mechanism 5 and the moving outer spraying mechanism 7 to spray the pipe with pressurized air.

[0045] The alignment and rotation mechanism 6 drives the pipe to rotate at a uniform speed, ensuring that both the inner and outer walls of the pipe are evenly contacted by the blowing airflow. Simultaneously, the alignment and internal blowing mechanism 5 sprays pressurized airflow onto the inner wall of the pipe, thoroughly removing residual impurities and moisture. This solves the problem of cleaning the inner wall of the pipe due to its enclosed structure. During the pipe's rotation, the movable external blowing mechanism 7, mounted on the truss 45 of the gantry 44, works synchronously. The movable external blowing mechanism 7 can move along the length of the truss 45, coordinating with the pipe's rotation to perform all-around, pressure-driven blowing on the outer wall of the pipe, further removing impurities and moisture. To remove stubborn impurities and moisture remaining on the outer wall and ensure that the cleaning quality of the inner and outer walls of the pipe meets the process requirements, after the blowing operation is completed, the pipe rolls from the inclined plate 43 onto the transfer mechanism 8. Then the transfer mechanism 8 is started. The transfer mechanism 8 is a conveyor belt with lifting function, which smoothly transfers the processed pipe on the inclined plate 43 to the discharge mechanism 9. The frame 11 and conveyor roller 12 of the discharge mechanism 9 have the same structure as the feeding mechanism 1. The qualified cleaned pipe is transported to the next production stage or storage area by the rotation of the conveyor roller 12, thus completing the entire water washing process of the pipe.

[0046] Combined with appendix Figure 2 Appendix Figure 5 Appendix Figure 6 and attached Figure 7As shown, the transport mechanism 3 includes a drive mechanism 31 and multiple sets of fixed frames 32, lifting frames 33, chain conveyor belts 34, and hydraulic cylinders 35. The fixed frame 32 is divided into a horizontal section 321, a climbing section 322, and a downward inclined section 323. The horizontal section 321 is located at the bottom of the washing pool 2 and is hinged to the lifting frame 33 at one end. The climbing section 322 connects the horizontal section 321 and the downward inclined section 323. The downward inclined section 323 is inclined downward near the draining platform 4. One end of the lifting frame 33 extends into the frame 11 of the feeding mechanism 1, is offset from the conveying roller 12, and is lower than the top surface of the conveying roller 12. The bottom of the lifting frame 33 is provided with a liquid collection hood 331. The bottom of the hydraulic cylinder 35 is hinged to a plate fixed on the ground, and the output end passes through a through hole on the frame 11 and is hinged to the bottom of the lifting frame 33. The drive mechanism 31 drives the chain conveyor belt 34 to move on the fixed frame 32 and the lifting frame 33.

[0047] Combined with appendix Figure 6 and attached Figure 7 As shown, the drive mechanism 31 includes a motor 311, a gearbox 312, and a drive shaft 313. The output end of the motor 311 is connected to the input end of the gearbox 312, and the output end of the gearbox 312 is connected to the drive shaft 313. The drive shaft 313 passes through multiple fixed frames 32 and a drive roller 314 for driving the chain conveyor belt 34 to rotate is provided inside the fixed frame 32. Both the fixed frame 32 and the lifting frame 33 are provided with a support plate 36 and a guide roller 37. A baffle 341 is provided on the outer surface of the chain conveyor belt 34.

[0048] The transport mechanism 3 mainly solves the problems of poor connection between the feeding mechanism 1, the washing pool 2 and the draining platform 4, the easy dripping of residual liquid during the transport of pipes, which contaminates the equipment and the ground, and the easy deviation or jamming of pipes between different transport sections. Through the coordinated action of the drive mechanism 31, the fixed frame 32, the lifting frame 33, the chain conveyor belt 34 and the hydraulic cylinder 35, the pipes are transported smoothly, accurately and without dripping from the feeding mechanism to the washing pool and then to the draining platform, while ensuring the stability and efficiency of the transport process.

[0049] In the initial state of operation, one end of the lifting frame 33 extends into the frame 11 of the feeding mechanism 1, and is offset from and lower than the top surface of the conveying roller 12 to avoid motion interference with the conveying roller 12 of the feeding mechanism and to avoid affecting the normal conveying of pipes by the feeding mechanism. When the conveying roller 12 of the feeding mechanism 1 delivers the pipe to be cleaned to the designated position, the hydraulic cylinder 35 is activated. Its bottom is hinged to the plate fixed on the ground, and its output end passes through the through hole on the frame 11 and drives the lifting frame 33 to rotate upward around the hinge point with the horizontal section 321 of the fixed frame 32. The lifting frame 33 is gradually raised until the top surface of the chain conveyor belt 34 on the frame is higher than the top surface of the conveying roller 12 of the feeding mechanism 1. At this time, the pipe is stably supported on the chain conveyor belt 34.

[0050] Subsequently, the drive mechanism 31 starts working, the motor 311 starts, and its output end transmits power to the gearbox 312. The gearbox 312 reduces the power and increases the torque before transmitting it to the drive shaft 313. The drive shaft 313 rotates and drives the drive roller 314 to rotate synchronously. The drive roller 314 drives the chain conveyor belt 34 to move on the fixed frame 32 and the lifting frame 33. During this process, the support plate 36 set on the fixed frame 32 and the lifting frame 33 provides stable support for the chain conveyor belt 34, avoiding excessive deformation of the chain conveyor belt 34 due to the weight of the pipe. At the same time, the baffle 341 on the outer surface of the chain conveyor belt 34 can limit the pipe, preventing the pipe from sliding or deviating during the conveying process due to the movement of the chain conveyor belt 34 or the tilt of the conveying section, thus ensuring the accuracy of the pipe conveying position.

[0051] After the pipe moves with the chain conveyor belt 34 to the junction of the lifting frame 33 and the horizontal section 321 of the fixed frame 32, it continues to move along the horizontal section 321 of the fixed frame 32. The horizontal section 321 is located at the bottom of the cleaning tank 2. During this process, the pipe is completely immersed in the water of the cleaning tank 2 to complete the washing. After the washing is completed, the pipe moves upward with the chain conveyor belt 34 along the climbing section 322 of the fixed frame 32, leaving the water of the cleaning tank 2. Then it enters the downward inclined section 323. The downward inclined section 323 is inclined downward near the draining platform 4. Under the limit of the baffle 341 and the drive of the chain conveyor belt 34, the pipe moves smoothly along the downward inclined section 323 and is finally transported to the inclined plate 43 of the draining platform 4, completing a complete pipe transport operation. After the pipe is transported to the horizontal section 321, the output end of the hydraulic cylinder 35 retracts, driving the lifting frame 33 to rotate downward and reset, returning to the initial position below the top surface of the conveying roller 12, waiting for the next batch of pipes to be transported.

[0052] Combined with appendix Figure 3 and attached Figure 4 As shown, a water circulator 21 is provided outside the cleaning pool 2. The input and output ends of the water circulator 21 are respectively provided with an inlet pipe 22 and an outlet pipe 23. The ends of the inlet pipe 22 and the outlet pipe 23 extend into the inside of the cleaning pool 2 and are located at opposite corners of the cleaning pool 2.

[0053] Combined with appendix Figure 3 and attached Figure 4 As shown, the other output end of the water circulator 21 is provided with a pressurized water pipe 24, and the pressurized water pipe 24 is provided with multiple sets of branch pipes 241. The branch pipes 241 extend into the cleaning tank 2 and are provided with pressurized nozzles 242 at their ends. Multiple mounting brackets 25 are provided on the wall of the cleaning tank 2. Each mounting bracket 25 is provided with a sensor 26. Each set of branch pipes 241 is provided with a solenoid valve controlled by the sensor 26.

[0054] The improved cleaning tank 2 mainly solves the problems of poor water flow, low cleaning efficiency, serious water waste, and inability to accurately adjust the flushing pressure according to the cleaning needs of pipes in traditional cleaning tanks. Through the coordinated action of water circulator 21, pressurized water pipe 24, sensor 26 and solenoid valve, the cleaning water is recycled. At the same time, high-pressure flushing is accurately provided according to the location of the pipes, which improves the cleaning effect of pipes, reduces water consumption, and ensures high efficiency and energy saving in the cleaning process.

[0055] In the specific working process, the cleaning tank 2 initially stores a sufficient amount of water for cleaning the pipes. When the transport mechanism 3 transports the pipes to be cleaned to the horizontal section 321 of the fixed frame 32 (located at the bottom of the cleaning tank 2), the pipes begin to be immersed in the water for washing. The input end of the external water circulator 21 of the cleaning tank 2 draws water from the cleaning tank 2 through the inlet pipe 22 and re-injects it into the cleaning tank 2 through the outlet pipe 23. The inlet pipe 22 and the outlet pipe 23 are located diagonally opposite each other in the cleaning tank 2. This diagonal layout can promote the formation of convection circulation of the water in the cleaning tank 2, avoid the accumulation of impurities at the bottom of the tank due to long-term stagnation, and ensure that the water in the tank always maintains a uniform cleanliness. At the same time, the water circulator 21 can filter the drawn water to remove impurities. The filtered water is then transported back to the cleaning tank 2 through the outlet pipe 23, realizing the recycling of the cleaning water, reducing the continuous injection of fresh water resources, and reducing water consumption.

[0056] As the pipe moves along the chain conveyor belt 34 on the horizontal section 321 at the bottom of the cleaning tank 2, the sensor 26 on the mounting bracket 25 on the tank wall of the cleaning tank 2 detects the position of the pipe in real time. When the sensor 26 detects that the pipe has moved to the position of the pressurized nozzle 242 of the corresponding branch pipe 241, it immediately sends an opening signal to the solenoid valve on the branch pipe 241. After receiving the signal, the solenoid valve opens quickly, and the pressurized water pipe 24 at the other output end of the water circulator 21 delivers the pressurized clean water to the corresponding branch pipe 241. Then, pressurized water is sprayed onto the surface of the pipe through the pressurized nozzle 242. The pressurized water can powerfully wash away solid impurities, oil stains and other impurities attached to the surface of the pipe, making up for the problem of insufficient cleaning power of simple soaking and washing, and ensuring that the surface of the pipe is initially thoroughly cleaned.

[0057] When sensor 26 detects that the pipe has left the cleaning area corresponding to branch pipe 241, it immediately sends a shut-off signal to the solenoid valve. The solenoid valve closes, and branch pipe 241 stops spraying water, avoiding the problem of water pressure dispersion and reduction caused by multiple branch pipes 241 spraying water simultaneously. As the pipe continues to move along the horizontal section 321 driven by the chain conveyor belt 34, the sensors 26 and branch pipes 241 at different positions repeat the above "detection-opening-spraying-closing" process in sequence, realizing full-process, precise high-pressure rinsing of the pipe surface. During the entire cleaning process, the water circulator 21 continuously circulates and filters water through the inlet pipe 22 and outlet pipe 23 to maintain the cleanliness of the water in the cleaning tank 2. At the same time, precise high-pressure rinsing is achieved through the cooperation of the pressurized water pipe 24, sensor 26, and solenoid valve. Finally, while ensuring the initial cleaning effect of the pipe, efficient use of water resources and energy saving are achieved, laying a good foundation for subsequent dewatering and blowing processes.

[0058] Combined with appendix Figure 10 Appendix Figure 11 Appendix Figure 12 and attached Figure 15 As shown, both the alignment internal blowing mechanism 5 and the alignment rotary drive mechanism 6 include an alignment mechanism. The alignment mechanism includes a transverse moving platform 52 and a hydraulic cylinder 53. A guide plate 46 is provided on the gantry 44, and a vertical rod 523 is provided on the transverse moving platform 52. The output end of the hydraulic cylinder 53 is connected to the vertical rod 523. The hydraulic cylinder 53 drives the transverse moving platform 52 to move along the pipe axis below the guide plate 46 through the vertical rod 523. The alignment internal blowing mechanism 5 and the alignment rotary drive mechanism 6 are respectively provided with multiple sealing cones 51 and multiple exhaust cones 61. Spring 512 and spring 612 are respectively provided on the rear side of the sealing cones 51 and the exhaust cones 61. Multiple stepped platforms 521 are provided on the front side of the transverse moving platform 52. Spring 512 is connected to the stepped platform 521. A blocking rod 522 is provided on the transverse moving platform 52.

[0059] The improved alignment mechanism mainly solves the problems of low pipe clamping and alignment accuracy, inability to adapt to different specifications of pipes, and easy axial displacement or loosening of pipes during spraying and rotation in the traditional alignment method. Through the coordinated action of the transverse stage 52, hydraulic cylinder 2 53, guide plate 46 and spring assembly (spring 1 512, spring 2 612), it achieves accurate axial alignment and stable clamping of pipes by the alignment inner spraying mechanism 5 and the alignment rotation mechanism 6. At the same time, it adapts to the processing requirements of pipes of different lengths, ensuring the stable and efficient operation of subsequent inner wall spraying and pipe rotation.

[0060] In the specific working process, after the pipe is transported by the transport mechanism 3 to the inclined plate 43 of the draining platform 4, the pipe rolls down on the inclined plate 43 until it is blocked by the blocking rod 522. After the pipe completes the initial draining on the inclined plate 43, the alignment mechanism starts. The guide plate 46 on the gantry 44 provides a stable moving guide foundation for the transverse platform 52. The hydraulic cylinder 53 serves as the power source, and its output end is connected to the upright rod 523 on the transverse platform 52. After starting, the upright rod 523 pushes the transverse platform 52 to move along the pipe axis below the guide plate 46. At this time, the transverse platform 52 of the alignment internal spraying mechanism 5 drives multiple sealing cones 51 to move towards one end of the pipe, while the transverse platform 52 of the alignment rotary drive mechanism 6 drives multiple exhaust cones 61 to move towards the other end of the pipe, realizing bidirectional synchronous alignment and ensuring that both ends of the pipe can be precisely connected with the sealing cones 51 and the exhaust cones 61 at the same time.

[0061] During the process of the sealing cone 51 and the exhaust cone 61 approaching the pipe port, if there is a slight axial position deviation in the pipe, the conical structure of the sealing cone 51 and the exhaust cone 61 can act as a guide, guiding the pipe to automatically adjust to the correct alignment position. The multiple sealing cones 51 have different lengths at their initial positions, with the sealing cone 51 closest to the transfer mechanism 8 having the longest extension. That is, the distance between the sealing cone 51 and the exhaust cone 61 closest to the transfer mechanism 8 is smaller than the distance between the sealing cone 51 and the exhaust cone 61 furthest away. Figure 11 In the middle, the sealing cone 51 near the transfer mechanism 8 is located at the thickest step 521 of the transverse platform 52. When the sealing cone 51 at this location is inserted into the inner wall of one end of the pipe and the exhaust cone 61 is inserted into the inner wall of the other end of the pipe and fits tightly, the other sealing cones 51 and exhaust cones 61 are not fit tightly. The farthest sealing cones 51 and exhaust cones 61 are not inserted into the pipe. As the transverse platform 52 continues to move, the sealing cones 51 and exhaust cones 61 are inserted into the pipe in sequence in the direction away from the transfer mechanism 8 and fit tightly. The spring 1 512 on the back side of the sealing cone 51 and the spring 2 612 on the back side of the exhaust cone 61 will be compressed and produce elastic deformation.

[0062] During the process of multiple sets of sealing cones 51 and venting cones 61 clamping multiple pipes sequentially, the pipes on the front side are clamped and limited at both ends by the sealing cones 51 and venting cones 61. Specifically, the sealing cones 51 shift during this process, ultimately causing the pipe's axis to coincide with the axis of the sealing cones 51 and the pipe to leave the inclined plate 43. This prevents the pipe from rubbing against the inclined plate 43 during rotation and damaging the galvanized layer. Simultaneously, the movement of the pipes on the front side pushes the movement of the adjacent pipes on the rear side, until the last pipe. Combined with the positioning effect of the cones on the pipes, this ultimately allows the clamping... There is a certain gap between adjacent pipes after clamping to avoid friction between adjacent pipes during rotation, which could damage the galvanized layer. When multiple pipes are clamped together, if the difference between the width of the clamped pipes and the width of the multiple pipes after clamping is greater than the diameter of the pipes, the sealing cone 51 and the exhaust cone 61 on the last side will be misaligned with the pipes. If multiple sets of sealing cones 51 and exhaust cones 61 are used to clamp simultaneously, the sealing cones 51 and exhaust cones 61 on the rear side will not be able to be inserted into the pipes. This situation can be avoided by clamping multiple sets of sealing cones 51 and exhaust cones 61 in stages.

[0063] The elastic force of spring 512 and spring 612 will tightly press the sealing cone 51 and the exhaust cone 61 against the inner walls of both ends of the pipe, achieving elastic clamping of the pipe. The lengths and elastic coefficients of the multiple springs 512 at different positions are different. The sealing cone 51 closest to the transfer mechanism 8 has the longest extension length and the longest displacement distance after clamping, and the corresponding spring 512 has the greatest compression degree. Therefore, the spring 512 at this location is long and has a small elastic coefficient. Along the direction away from the transfer mechanism 8, the length of spring 512 becomes shorter and the elastic coefficient becomes larger. The same applies to spring 612. This elastic clamping method can ensure the stability of the pipe during subsequent blowing and rotation, avoid damage to the pipe surface caused by rigid clamping, and adapt to pipes with different inner diameter specifications, improving the versatility of the mechanism.

[0064] After the pipe completes the inner wall blowing and rotation operations, the output end of hydraulic cylinder 2 53 retracts, pulling the horizontal moving platform 52 along the guide plate 46 in the opposite direction via the upright rod 523. Multiple sets of sealing cones 51 and exhaust cones 61 sequentially disengage from both ends of the pipe. Spring 1 512 and spring 2 612 reset under the action of elastic restoring force. Hydraulic cylinder 2 53 drives the horizontal moving platform 52 to reset and then move it backward a certain distance, causing the blocking rod 522 to leave the pipe's movement path, thereby causing the pipe to roll onto the transfer mechanism 8. Subsequently, the horizontal moving platform 52 resets again, waiting for the alignment operation of the next pipe. The entire process achieves precise, stable, and flexible alignment of the pipe, providing a reliable guarantee for the inner wall blowing of the alignment inner blowing mechanism 5 and the pipe driving of the alignment rotation mechanism 6.

[0065] Combined with appendix Figure 11 Appendix Figure 12 and attached Figure 13As shown, the sealing cone 51 is covered with a rubber sleeve, and a spline shaft 511 is provided on the rear side of the sealing cone 51. A positioning ring 55 is rotatably provided inside the transverse platform 52. The inner side of the positioning ring 55 is provided with a spline groove that mates with the spline shaft 511. The alignment inner blowing mechanism 5 is provided with an air pipe 54 that connects to an external compressed air pipeline. Multiple hoses 541 are provided on the air pipe 54. The end of the hose 541 is provided with a rotating connector 542. The rotating connector 542 is rotatably connected to the rear end of the spline shaft 511. The through holes on the inner side of the sealing cone 51 and the spline shaft 511 are connected to the hoses 541.

[0066] The improved alignment and internal spraying mechanism 5 mainly solves the problems of easy air leakage when connecting the air pipe and rotating parts, unstable high-pressure airflow delivery, inability to synchronize and coordinate the spraying components and clamping alignment actions in the traditional internal wall spraying mechanism, and difficulty in adapting to the rotation requirements of the pipe. Through the synergistic action of the spline shaft 511, positioning swivel ring 55, rotating connector 542 and hose 541, the high-pressure airflow is stably delivered to the rotating sealing cone 51, while ensuring precise coordination between the spraying action and the alignment and clamping action, thus ensuring efficient and thorough spraying cleaning of the inner wall of the pipe.

[0067] During the actual operation, after the alignment mechanism is activated, the transverse platform 52 of the alignment inner blowing mechanism 5 moves towards one end of the pipe along the guide plate 46 of the gantry 44 under the drive of the hydraulic cylinder 53. At this time, the transverse platform 52 drives the sealing cone 51 to move synchronously towards the pipe end. As the sealing cone 51 moves towards the pipe end and gradually inserts into the inner wall of the pipe, the spline shaft 511 on the rear side of the sealing cone 51 cooperates with the positioning ring 55 rotatably set inside the transverse platform 52. The spline groove on the inner side of the positioning ring 55 forms a sliding connection with the spline shaft 511, which not only ensures that the spline shaft 511 moves stably along the axial direction with the sealing cone 51, but also does not affect the subsequent rotation of the spline shaft 511, providing a structural basis for the sealing cone 51 to rotate synchronously with the pipe during the blowing process.

[0068] When the sealing cone 51 is tightly fitted to the inner wall of one end of the pipe under the action of the alignment mechanism, and the alignment drive mechanism 6 starts to drive the pipe to rotate, the pipe drives the sealing cone 51 to rotate synchronously. The sealing cone 51 then drives the spline shaft 511 to rotate. The spline shaft 511 and the positioning ring 55 cooperate with the spline groove to drive the positioning ring 55 to rotate. The positioning ring 55 provides stable radial support for the spline shaft 511, preventing the spline shaft 511 from shifting when rotating, ensuring that the sealing cone 51 always keeps tightly fitted to the inner wall of the pipe, and preventing high-pressure airflow from leaking from the fitting gap.

[0069] At the same time, the air pipe 54, which connects the internal injection mechanism 5 to the external compressed air pipeline, begins to deliver high-pressure airflow. The high-pressure airflow is diverted through the air pipe 54 to multiple hoses 541. The rotating connector 542 at the end of the hose 541 is rotatably connected to the rear end of the spline shaft 511. This connection method ensures that the high-pressure airflow can stably enter the through hole inside the spline shaft 511, and also allows the spline shaft 511 to rotate freely without damaging the airflow delivery channel due to the torque generated by the rotation.

[0070] High-pressure airflow enters the through-hole of spline shaft 511 through rotating connector 542, and continues forward to the through-hole inside the sealing cone 51. Finally, it is sprayed from the front through-hole of the sealing cone 51 onto the inner wall of the pipe, cleaning residual impurities and moisture with high-pressure jetting. During the jetting process, because the sealing cone 51 rotates synchronously with the pipe, the high-pressure airflow can evenly cover all areas of the inner wall of the pipe, achieving thorough cleaning. Simultaneously, the tight fit between the sealing cone 51 and the inner wall of the pipe prevents… Preventing high-pressure airflow from leaking from the pipe end ensures that the airflow pressure is concentrated on cleaning the inner wall and that the airflow direction is stable, thus improving the blowing efficiency. After the blowing operation on the inner wall of the pipe is completed, the alignment mechanism drives the transverse moving platform 52 to move in the opposite direction, the sealing cone 51 disengages from the inner wall of the pipe, the air pipe 54 stops delivering high-pressure airflow, and the spline shaft 511 resets with the sealing cone 51, waiting for the next blowing operation. The whole process achieves precise coordination between the blowing action and the alignment and rotation actions, ensuring the cleaning effect of the inner wall of the pipe.

[0071] Combined with appendix Figure 14 Appendix Figure 15 and attached Figure 16 As shown, a second splined shaft 611 is provided on the rear side of the exhaust cone 61. A second positioning ring 64 is rotatably provided inside the transverse stage 52. The inner side of the second positioning ring 64 is provided with a spline groove that mates with the second splined shaft 611. The alignment drive mechanism 6 is provided with a power box 62. The power box 62 is provided with a drive mechanism 63. The drive mechanism 63 includes a second motor 631, a sprocket set 634, and multiple drive sprockets 635. The sprocket set 634 and the multiple drive sprockets 635 are rotatably located inside the power box 62. A first gear 632 is provided at the output end of the second motor 631. A second gear 633 that meshes with the first gear 632 is coaxially connected to one end of the sprocket set 634. The multiple sprockets of the sprocket set 634 are respectively connected to the multiple drive sprockets 635 through chain transmission. The inner side of the drive sprocket 635 is provided with a spline groove that mates with the second splined shaft 611.

[0072] The improved alignment drive mechanism 6 mainly solves the problems of poor compatibility between power transmission and rotating components, difficulty in achieving synchronous rotation of multiple drive components, lack of coordination between rotation and clamping alignment actions, and inability to stably drive the pipe to rotate at a uniform speed in traditional drive mechanisms. Through the synergistic effect of spline shaft 611, positioning ring 64, power box 62 and drive mechanism 63, the power is stably transmitted to the exhaust cone 61, ensuring that multiple exhaust cones 61 synchronously drive the pipe to rotate at a uniform speed. At the same time, it adapts to the axial movement during the clamping alignment process, ensuring the rotational stability and uniformity of the pipe during spray cleaning.

[0073] In the specific working process, after the alignment mechanism is started, the transverse moving platform 52 drives the exhaust cone 61 to move synchronously closer to the pipe port. The groove on the exhaust cone 61 facilitates the outflow of impurities and water in the pipe. As the exhaust cone 61 moves towards the pipe port and gradually inserts into the inner wall of the pipe, the spline shaft 611 on the rear side of the exhaust cone 61 cooperates with the positioning ring 64 rotatably set inside the transverse moving platform 52. The spline groove on the inner side of the positioning ring 64 forms a sliding connection with the spline shaft 611, which not only ensures that the spline shaft 611 moves stably along the axial direction with the exhaust cone 61 to meet the position adjustment requirements during alignment and clamping, but also does not affect the subsequent rotation of the spline shaft 611, providing a structural adaptation basis for the exhaust cone 61 to drive the pipe to rotate.

[0074] When the exhaust cone 61 is tightly fitted to the inner wall of the other end of the pipe under the action of the alignment mechanism, and the sealing cone 51 of the alignment inner blowing mechanism 5 completes the sealing clamping of one end of the pipe, the rotary drive mechanism 63 in the power box 62 starts to work, the second motor 631 starts, and its output end drives the first gear 632 to rotate. The first gear 632 meshes with the second gear 633, which is coaxially connected to one end of the sprocket group 634, and transmits power to the sprocket group 634. The sprocket group 634 transmits power to multiple drive sprockets 635 through the chain. Since the multiple sprockets of the sprocket group 634 and the drive sprockets 635 are transmitted one-to-one, the multiple drive sprockets 635 achieve synchronous rotation.

[0075] The rotational driving force of the exhaust cone 61 drives the entire pipe to rotate at a uniform speed, providing stable rotational conditions for the alignment inner blowing mechanism 5 to perform thorough cleaning of the inner wall of the pipe without dead angles. During the rotation of the pipe, the positioning ring 64 always provides radial support for the spline shaft 611, preventing the spline shaft 611 from shifting due to rotation, ensuring the stability of the fit between the exhaust cone 61 and the inner wall of the pipe, and preventing the pipe from slipping or shifting during rotation.

[0076] After the pipe's inner wall cleaning operation is completed, the motor 631 of the rotary drive mechanism 63 stops working, the drive sprocket 635 stops rotating, and the splined shaft 611 and the exhaust cone 61 also stop rotating. Subsequently, the alignment mechanism drives the transverse stage 52 to move in the opposite direction, and the splined shaft 611 moves axially along the spline groove of the positioning ring 64 with the exhaust cone 61, disengaging from the pipe's inner wall, completing one rotational drive operation. The entire process achieves precise coordination between the rotational drive and the alignment clamping action, ensuring the stability, synchronization, and uniformity of the pipe's rotation, providing reliable power support for the efficient cleaning of the pipe's inner wall.

[0077] Combined with appendix Figure 9 and attached Figure 17 As shown, the mobile external spraying mechanism 7 includes a mobile vehicle 71 that travels on a truss 45. A riser 72 connected to an external compressed air pipeline is suspended below the mobile vehicle 71. A horizontal pipe 73 is connected to the lower end of the riser 72. Multiple sets of pressurized nozzles 74 are provided on the horizontal pipe 73.

[0078] The improved mobile external spraying mechanism 7 mainly solves the problems of incomplete spraying coverage of the outer wall of the pipe due to the fixed setting of the traditional external spraying mechanism, inability to adapt to the cleaning needs of pipes of different lengths, poor spraying flexibility and low cleaning efficiency. Through the coordinated action of the mobile vehicle 71 that travels on the truss 45, the suspended riser 72, the horizontal pipe 73 and multiple sets of pressurized nozzles 74, it achieves full-process, uniform and dead-angle high-pressure spraying of the outer wall of the rotating pipe, ensuring that residual impurities and moisture on the outer wall of the pipe are thoroughly removed, while improving the flexibility and adaptability of the spraying operation.

[0079] In the specific working process, when the alignment drive mechanism 6 drives the pipe to rotate at a uniform speed and the alignment inner spraying mechanism 5 sprays and cleans the inner wall of the pipe, the moving outer spraying mechanism 7 starts simultaneously. The moving vehicle 71 is mounted on the truss 45 and can travel smoothly along the length direction of the truss 45 (i.e., the axial direction of the pipe). Its traveling speed can be adapted and adjusted according to the pipe cleaning requirements and the pipe rotation speed, providing a moving foundation for realizing comprehensive spraying of the outer wall of the pipe. The riser 72 suspended below the moving vehicle 71 is connected to the external compressed air pipeline. The high-pressure airflow delivered by the external compressed air system is stably transmitted through the riser 72 to the horizontal pipe 73 connected at the lower end. The length direction of the horizontal pipe 73 is adapted to the radial direction of the pipe, ensuring that the multiple sets of pressurized nozzles 74 mounted on it can cover different radial positions of the outer wall of the pipe.

[0080] Multiple sets of pressurized nozzles 74 are evenly distributed on the horizontal pipe 73, and the nozzles are all aimed at the outer wall of the pipe. When the high-pressure airflow enters the horizontal pipe 73, it will spray high-pressure airflow onto the outer wall of the pipe simultaneously through the multiple sets of pressurized nozzles 74, forming a multi-directional and dense spraying area. This can quickly flush away residual impurities on the outer wall of the pipe and blow away the moisture attached to the outer wall. During the spraying process, the pipe rotates at a constant speed under the drive of the positioning and rotating mechanism 6. Combined with the slow movement of the moving vehicle 71 along the truss 45, the high-pressure airflow sprayed by the pressurized nozzles 74 can cover every area of ​​the outer wall of the pipe in a spiral trajectory, completely solving the problem of cleaning dead corners in traditional fixed spraying and ensuring the uniformity of the cleaning of the outer wall of the pipe.

[0081] The above structure serves as the basic structure for the cleaning method. Improvements can be made to this structure and materials. For example, the cleaning tank 2 can be used as an acid washing tank and an alkaline washing tank, and the draining platform 4 can be used as a water tank. In this case, the water inlet trough 27 can be sealed, and the air jet structure of the internal spraying mechanism 5 and the movable external spraying mechanism 7 can be changed to a water spraying structure. Corrosion-resistant materials can be used. Based on the above improved equipment, the improved acid washing device, alkaline washing device, and water washing device can be arranged according to the process flow to form an automatic treatment for pipe galvanizing pretreatment, which greatly improves the production efficiency of pipe pretreatment.

[0082] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A galvanized pipe washing device, comprising a washing tank (2), characterized in that: It also includes a feeding mechanism (1), a transport mechanism (3), a draining platform (4), a transfer mechanism (8), and a discharging mechanism (9). Both the feeding mechanism (1) and the discharging mechanism (9) include a frame (11). Multiple conveying rollers (12) are provided on the frame (11). The washing tank (2) is located between the feeding mechanism (1) and the draining platform (4). An inclined plate (43) is provided on the draining platform (4). The pipe is transported from the feeding mechanism (1) to the washing tank (2) through the transport mechanism (3), and then transported to the inclined plate (43). The draining platform (4) is equipped with a gate (44) at both ends. Two gantry (44) are respectively equipped with an internal spraying mechanism (5) and an internal rotation drive mechanism (6). The internal spraying mechanism (5) and the internal rotation drive mechanism (6) clamp the pipe at the same time. The internal spraying mechanism (5) sprays the inner wall of the pipe. The internal rotation drive mechanism (6) drives the pipe to rotate. A truss (45) is provided on the gantry (44). A movable external spraying mechanism (7) is provided on the truss (45). The movable external spraying mechanism (7) sprays the outer wall of the pipe. The transfer mechanism (8) transfers the pipe on the inclined plate (43) to the discharge mechanism (9). The alignment internal blowing mechanism (5) and the alignment rotary drive mechanism (6) both include an alignment mechanism, which includes a transverse moving platform (52) and a hydraulic cylinder (53). A guide plate (46) is provided on the gantry (44). The hydraulic cylinder (53) drives the transverse moving platform (52) to move along the pipe axis below the guide plate (46). The alignment internal blowing mechanism (5) and the alignment rotary drive mechanism (6) are respectively provided with multiple sealing cones (51) and multiple exhaust cones (61). Spring 1 (512) and spring 2 (612) are respectively provided on the rear side of the sealing cone (51) and the exhaust cone (61). Multiple stepped platforms (521) are provided on the front side of the transverse moving platform (52). Spring 1 (512) is connected to the stepped platform (521). A blocking rod (522) is provided on the transverse moving platform (52). The sealing cone (51) is provided with a spline shaft (511) on the rear side. The transverse platform (52) is provided with a positioning ring (55) that rotates inside. The positioning ring (55) is provided with a spline groove that mates with the spline shaft (511) on the inner side. The alignment inner blowing mechanism (5) is provided with an air pipe (54) that connects to an external compressed air pipeline. Multiple hoses (541) are provided on the air pipe (54). The end of the hose (541) is provided with a rotating connector (542). The rotating connector (542) is rotatably connected to the rear end of the spline shaft (511). The sealing cone (51) and the inner through hole of the spline shaft (511) are connected to the hose (541).

2. The galvanized pipe washing device according to claim 1, characterized in that: The transport mechanism (3) includes a drive mechanism (31), a fixed frame (32), a lifting frame (33), a chain conveyor belt (34), and a hydraulic cylinder (35). The fixed frame (32) is partially located in the cleaning tank (2). One end of the lifting frame (33) is hinged to the end of the fixed frame (32), and the other end extends into the frame (11) of the feeding mechanism (1) and is lower than the top surface of the conveyor roller (12). The hydraulic cylinder (35) drives the lifting frame (33) to rotate, and the drive mechanism (31) drives the chain conveyor belt (34) to move on the fixed frame (32) and the lifting frame (33).

3. The galvanized pipe washing device according to claim 1, characterized in that: The cleaning tank (2) is equipped with a water circulator (21) on the outside. The input and output ends of the water circulator (21) are respectively equipped with an inlet pipe (22) and an outlet pipe (23). The ends of the inlet pipe (22) and the outlet pipe (23) extend into the inside of the cleaning tank (2) and are located at opposite corners of the cleaning tank (2).

4. A galvanized pipe washing device according to claim 3, characterized in that: The other output end of the water circulator (21) is provided with a pressurized water pipe (24), and multiple sets of branch pipes (241) are provided on the pressurized water pipe (24). The branch pipes (241) extend into the cleaning tank (2) and are provided with pressurized nozzles (242) at their ends. Sensors (26) are provided on the wall of the cleaning tank (2), and each set of branch pipes (241) is provided with a solenoid valve controlled by the sensor (26).

5. A galvanized pipe washing device according to claim 1, characterized in that: The exhaust cone (61) is provided with a spline shaft two (611) on the rear side. The transverse platform (52) is provided with a positioning ring two (64) that rotates inside. The positioning ring two (64) is provided with a spline groove that mates with the spline shaft two (611) on the inner side. The alignment drive mechanism (6) is provided with a power box (62). The power box (62) is provided with a drive mechanism (63). The drive mechanism (63) includes a motor two (631) and multiple drive sprockets (635). The motor two (631) drives the multiple drive sprockets (635) to rotate inside the power box (62) through a chain transmission structure. The drive sprockets (635) are provided with a spline groove that mates with the spline shaft two (611) on the inner side.

6. A galvanized pipe washing device according to claim 1, characterized in that: The mobile external spraying mechanism (7) includes a mobile vehicle (71) that travels on a truss (45), a riser (72) connected to an external compressed air pipeline is suspended below the mobile vehicle (71), a horizontal pipe (73) is connected to the lower end of the riser (72), and multiple sets of pressurized nozzles (74) are provided on the horizontal pipe (73).

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