Inner blowing device for galvanized steel pipe

Abstract

The invention provides a galvanized steel pipe inner blowing device which comprises a first inclined table, first supporting assemblies are arranged at the two ends of the top of the first inclined table, the two first supporting assemblies are used for supporting a galvanized steel pipe body, and a clamping and positioning assembly is arranged between the two first supporting assemblies. The clamping and positioning assembly is used for conducting multi-point clamping and positioning on the galvanized steel pipe body, and an inner blowing assembly is arranged at the upper end of the supporting table. Before internal blowing, supporting of the two first supporting assemblies on the galvanized steel pipe body is omitted, obstacles are prevented from existing on the supporting faces of the first supporting assemblies, the clamping and positioning assemblies are used for conducting multi-point clamping and positioning on the galvanized steel pipe body, and the galvanized steel pipe body is in the state of being aligned with the internal blowing part; and then the end of the galvanized steel pipe body is shielded and supported through the sealing cover, multi-point supporting of the steel pipe body is achieved, stability of the galvanized steel pipe body is maintained, and active alignment of the galvanized steel pipe body 43 and the inner blowing piece is achieved.

Description

Technical Field

[0001] This invention belongs to the field of internal blowing treatment of galvanized steel pipes, and in particular relates to an internal blowing device for galvanized steel pipes. Background Technology

[0002] During the production of hot-dip galvanized steel pipes, a layer of molten zinc adheres to both the inner and outer surfaces of the pipe after it is drawn from the zinc bath. To control the thickness of the zinc layer and ensure its uniform distribution, excess molten zinc needs to be blown away promptly. During internal blowing, the galvanized steel pipe is fixed, and the internal blowing nozzle moves inside the pipe. However, in existing technology, if obstructions fall onto the support components supporting the galvanized steel pipe, it can cause the pipe to tilt, making it difficult to align the pipe with the internal blowing nozzle. As the nozzle moves inside the pipe, it may come into close contact with one side of the pipe's inner wall, affecting the internal blowing effect. Summary of the Invention

[0003] In view of this, the present invention aims to provide an internal blowing device for galvanized steel pipes to solve the technical problems in the prior art, where when obstacles fall on the support components supporting the galvanized steel pipe body, the galvanized steel pipe will tilt, making it difficult to align the galvanized steel pipe with the internal blowing nozzle. Furthermore, during the movement of the nozzle inside the steel pipe, it will come into close contact with one side of the inner wall of the galvanized steel pipe, affecting the internal blowing effect.

[0004] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0005] An internal blowing device for a galvanized steel pipe includes a first inclined platform. Two first support components are provided at both ends of the top of the first inclined platform. The two first support components support the galvanized steel pipe body. A clamping and positioning component is provided between the two first support components for multi-point clamping and positioning of the galvanized steel pipe body. An internal blowing component is provided at the upper end of the first inclined platform. The internal blowing component includes a second inclined platform. A support platform is fixedly installed on the second inclined platform. A sealing cover is provided on the support platform. The sealing cover is used to seal and shield the end of the galvanized steel pipe body after it has been clamped and positioned by the clamping and positioning component. An internal blowing component is provided inside the sealing cover, penetrating both the sealing cover and the support platform. A linear drive component is also provided on the second inclined platform for linearly driving the internal blowing component, allowing the internal blowing component to move inside the galvanized steel pipe body.

[0006] Furthermore, the first support assembly includes two first cylinders, which are fixedly mounted on the platform of the first tilting stage, and the piston rod ends of the two first cylinders are fixedly connected to first support claws.

[0007] Furthermore, the clamping and positioning assembly includes a positioning platform, which is fixedly connected to the platform of the first inclined platform and located between the two first cylinders. The top of the positioning platform has multiple sliding grooves, and two grippers are slidably arranged in the sliding grooves. The gripping surfaces of the two grippers are arc-shaped surfaces adapted to the surface of the galvanized steel pipe. The two grippers are symmetrically arranged. A support rod is fixedly connected to the inner wall of the sliding groove, and the two grippers are sleeved on the surface of the support rod. A bidirectional cylinder is fixedly installed at the bottom of the positioning platform. The two piston rod ends of the bidirectional cylinder are fixedly connected to linkage frames, and the two linkage frames are respectively fixedly connected to the two grippers inside the sliding groove.

[0008] The top of the positioning platform is also provided with multiple auxiliary support components. Each auxiliary support component includes two connecting seats. The top of each of the two connecting seats is fixedly connected to a support column. An auxiliary support seat is sleeved on the surface of each of the two support columns. The top of the auxiliary support seat has an auxiliary support slot. A second support spring is sleeved on the surface of each of the two support columns. The two ends of the second support spring are fixedly connected to the auxiliary support seat and the connecting seat, respectively.

[0009] Furthermore, a connecting frame is fixedly sleeved on the surface of the sealing cover, and a push pin is provided at both ends of the connecting frame. The push pin is inserted into the end of the connecting frame, and a push cover is fixedly sleeved on the surface of the push pin. A first support spring is provided inside the push cover. The two ends of the first support spring are fixedly connected to the push cover and the connecting frame, respectively. The two push pins pass through the support platform and are fixedly connected to the push frame. A second cylinder is fixedly installed between the top of the push frame and the support platform.

[0010] Furthermore, the internal blowing component includes a nozzle, which is disposed inside the sealing cover. The tail end of the nozzle is fixedly connected to an air inlet pipe. The sealing cover is slidably sleeved on the surface of the air inlet pipe. An opening is provided on the support platform, and the air inlet pipe passes through the opening and is connected to an external air source through a pipeline.

[0011] Furthermore, the linear drive assembly includes a slide rail and a first motor. The slide rail is fixedly connected to the platform of the second tilting stage. A slide block is slidably connected to the surface of the slide rail. A movable frame is fixedly connected to the top of the slide block. The movable frame is fixedly sleeved on the surface of the air intake pipe. The first motor is fixedly mounted on the surface of the support platform and located below the opening. A threaded rod is fixedly connected to the output end of the first motor. The movable frame is threadedly connected to the surface of the threaded rod.

[0012] Furthermore, a reflector is fixedly connected to the top of the moving frame, and a laser rangefinder is fixedly installed on the surface of the pushing frame, with the laser rangefinder facing the reflector. A controller is also fixedly installed on the surface of the second tilting platform, and the controller is used to control the rotation speed of the first motor according to the distance between the reflector and the laser rangefinder detected by the laser rangefinder.

[0013] Furthermore, the first inclined platform is further characterized by having a conveying assembly, which includes a first mounting frame located on the left side of the positioning platform, and a plurality of conveying rollers rotatably connected to the first mounting frame.

[0014] Furthermore, a temporary placement assembly is also provided on the first tilting platform. The temporary placement assembly includes a placement frame located on the right side of the positioning platform, and a plurality of second support claws are fixedly connected to the top of the placement frame.

[0015] Furthermore, a transfer assembly is also provided on the first inclined platform. The transfer assembly includes two support plates and a transfer plate. The two support plates are fixedly connected to the platform surface of the first inclined platform and located outside the two first cylinders. A second motor is installed on each of the two support plates. A drive shaft is fixedly installed on the output shaft of the second motor, and a driven shaft is provided on each of the two support plates. The drive shaft and the driven shaft on the same support plate are arranged parallel to each other. The drive shaft and the driven shaft are rotatably connected to the support plate, and a swing arm is installed on each of the drive shaft and the driven shaft. The two swing arms rotate to connect to the bottom of the transfer plate, and three transfer slots are opened at the upper end of each transfer plate.

[0016] Compared with existing technologies, the internal blowing device for galvanized steel pipes described in this invention has the following advantages:

[0017] Before internal blowing, this invention eliminates the support of the two first support components on the galvanized steel pipe body to avoid obstructions on the support surface of the first support components. A clamping and positioning component is used to clamp and position the galvanized steel pipe body at multiple points, aligning it with the internal blowing component. Then, a sealing cover provides support to the ends of the galvanized steel pipe body, achieving multi-point support and maintaining its stability. This allows for active alignment of the galvanized steel pipe body 43 with the internal blowing component, aligning the center point of the port of the galvanized steel pipe body 43 with the internal blowing component. A linear drive component then linearly drives the internal blowing component, allowing it to move inside the galvanized steel pipe body and perform internal blowing. This helps maintain a uniform distance between the outlet of the internal blowing component and the inner wall of the galvanized steel pipe body, reducing the impact on the internal blowing effect. Attached Figure Description

[0018] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0019] Figure 1 This is a schematic diagram of the first overall structure of an internal blowing device for a galvanized steel pipe according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the first tilting platform, conveying assembly, clamping and positioning assembly, transfer assembly and temporary placement assembly of the internal blowing device for galvanized steel pipe according to an embodiment of the present invention;

[0021] Figure 3 for Figure 2 Enlarged view of section A in the middle;

[0022] Figure 4 This is a schematic diagram of the transfer assembly of an internal blowing device for a galvanized steel pipe according to an embodiment of the present invention;

[0023] Figure 5 This is a partial structural schematic diagram of the transfer component of an internal blowing device for a galvanized steel pipe according to an embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram of the clamping and positioning assembly of an internal blowing device for a galvanized steel pipe according to an embodiment of the present invention;

[0025] Figure 7 This is a first structural schematic diagram of the linear drive assembly, sealing cover, and support platform of the internal blowing device for a galvanized steel pipe according to an embodiment of the present invention.

[0026] Figure 8 This is a second structural schematic diagram of the linear drive assembly, sealing cover, and support platform of the internal blowing device for a galvanized steel pipe according to an embodiment of the present invention;

[0027] Figure 9 for Figure 8 Enlarged view of section B;

[0028] Figure 10 This is a cross-sectional view of the sealing cover and nozzle of an internal blowing device for a galvanized steel pipe according to an embodiment of the present invention.

[0029] Figure 11 This is a schematic diagram of the nozzle structure of an internal blowing device for a galvanized steel pipe according to an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1-First tilting platform; 2-Second tilting platform; 3-Support platform; 4-Sealing cover; 401-Socket; 5-First cylinder; 6-First support claw; 7-Positioning platform; 8-Slide groove; 9-Grip claw; 10-Support rod; 11-Double-actuated cylinder; 12-Linkage frame; 13-Connecting seat; 14-Support column; 15-Auxiliary support seat; 16-Second support spring; 17-First mounting frame; 18-Conveying roller; 19-Placement frame; 20-Second support claw; 21-Support plate; 22-Transfer plate; 2201-Transfer groove; 23-Second motor; 24-Drive shaft; 25-Driven motor 26-Shaft; 27-Connecting frame; 28-Push pin; 29-Push cover; 30-First support spring; 31-Push frame; 32-Second cylinder; 33-Nozzle; 3301-Outer cover; 3302-Inner guide body; 3303-Connecting rod; 3304-Air passage; 3305-Air jet nozzle; 34-Inlet pipe; 35-Port; 36-Slide rail; 37-First motor; 38-Slide seat; 3801-Moving frame; 39-Threaded rod; 40-Laser rangefinder sensor; 41-Reflector; 42-Controller; 43-Galvanized steel pipe body; 44-Drive motor. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0033] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] like Figures 1 to 11 As shown, in one embodiment, an internal blowing device for a galvanized steel pipe includes a first inclined platform 1. Both ends of the top of the first inclined platform 1 are provided with first support components. The two first support components are used to support the galvanized steel pipe body 43. A clamping and positioning component is provided between the two first support components. The clamping and positioning component is used to clamp and position the galvanized steel pipe body 43 at multiple points. An internal blowing component is provided at the upper end of the first inclined platform (1). The internal blowing component includes a second inclined platform 2. A support platform 3 is fixedly installed on the second inclined platform 2. A sealing cover 4 is provided on the support platform 3. The sealing cover 4 is used to seal and block the end of the galvanized steel pipe body 43 after it is clamped and positioned by the clamping and positioning component. An internal blowing component is provided inside the sealing cover 4. The internal blowing component passes through the sealing cover 4 and the support platform 3. A linear drive component is also provided on the second inclined platform 2. The linear drive component is used to drive the internal blowing component linearly. The internal blowing component moves inside the galvanized steel pipe body 43 and performs internal blowing inside the galvanized steel pipe body 43 after it is clamped and positioned by the clamping and positioning component.

[0037] Before internal blowing, the support of the two first support components on the galvanized steel pipe body 43 is removed to avoid obstructions on the support surface of the first support components. The clamping and positioning components are used to clamp and position the galvanized steel pipe body 43 at multiple points, so that the galvanized steel pipe body 43 is aligned with the internal blowing component. Then, the end of the galvanized steel pipe body 43 is shielded and supported by the sealing cover 4, so as to achieve multi-point support for the galvanized steel pipe body 43, maintain the stability of the galvanized steel pipe body 43, and achieve active alignment between the galvanized steel pipe body 43 and the internal blowing component, so that the center point of the port of the galvanized steel pipe body 43 is aligned with the internal blowing component. Then, the internal blowing component is linearly driven by the linear drive component. The internal blowing component moves inside the galvanized steel pipe body 43 and performs internal blowing inside the galvanized steel pipe body 43 after being clamped and positioned by the clamping and positioning components. This helps to maintain a uniform distance between the various positions of the air outlet of the internal blowing component and the inner wall of the galvanized steel pipe body 43, and reduces the impact on the internal blowing effect.

[0038] Specifically, the first support assembly includes two first cylinders 5, which are fixedly mounted on the platform of the first tilting stage 1, and the piston rod ends of the two first cylinders 5 are fixedly connected to first support claws 6.

[0039] The clamping and positioning assembly includes a positioning platform 7, which is fixedly connected to the platform of the first inclined platform 1 and located between the two first cylinders 5. The top of the positioning platform 7 has multiple sliding grooves 8, and two grippers 9 are slidably arranged within each groove 8. The gripping surfaces of the two grippers 9 are arc-shaped surfaces adapted to the surface of the galvanized steel pipe body 43. The two grippers 9 are symmetrically arranged. A support rod 10 is fixedly connected to the inner wall of the sliding groove 8, and the two grippers 9 are sleeved on the surface of the support rod 10. A bidirectional cylinder 11 is fixedly installed at the bottom of the positioning platform 7, and the ends of the two piston rods of the bidirectional cylinder 11 are... Each is fixedly connected with a linkage frame 12, and the two linkage frames 12 are respectively fixedly connected to the two grippers 9 inside the slide groove 8; the top of the positioning table 7 is also provided with multiple auxiliary support components, including two connecting seats 13, the top of the two connecting seats 13 is fixedly connected to a support column 14, the surface of the two support columns 14 is sleeved with an auxiliary support seat 15, the top of the auxiliary support seat 15 has an auxiliary support slot, the surface of the two support columns 14 is sleeved with a second support spring 16, and the two ends of the second support spring 16 are respectively fixedly connected to the auxiliary support seat 15 and the connecting seat 13.

[0040] Before positioning and clamping, the galvanized steel pipe body 43 is located on the first support claw 6, in the auxiliary support groove of the auxiliary support seat 15, and between the two claws 9 in the slide groove 8, which supports the galvanized steel pipe body 43.

[0041] During the positioning and clamping process, the first two first cylinders 5 pull the first support claws 6 to release the support of the galvanized steel pipe body 43, so that the galvanized steel pipe body 43 will be completely located in the auxiliary support groove. Then, the two-way cylinders 11 simultaneously pull the two linkage frames 12 to move towards each other. The two linkage frames 12 simultaneously drive the claws 9 on both sides to move towards each other, clamping and positioning the galvanized steel pipe body 43. The claws 9 at multiple positions will tighten the galvanized steel pipe body 43, realizing multi-point clamping and positioning of the galvanized steel pipe body 43. During the clamping process, the auxiliary support seat 15 can elastically yield under the support of the second support spring 16, which on the one hand avoids obstructing the positioning of the galvanized steel pipe body 43, and on the other hand can always provide support for the galvanized steel pipe body 43, preventing the galvanized steel pipe body 43 from slipping.

[0042] Specifically, a conveying assembly is also provided on the first tilting platform 1. The conveying assembly includes a first mounting frame 17, which is located on the left side of the positioning platform 7. Multiple conveying rollers 18 are rotatably connected to the first mounting frame 17. The conveying power of the conveying rollers 18 can be provided by a drive motor 44 mounted on the first mounting frame 17, which is a conventional driving method and is existing technology.

[0043] The first tilting platform 1 is also equipped with a temporary placement assembly, which includes a placement frame 19. The placement frame 19 is located on the right side of the positioning platform 7. Multiple second support claws 20 are fixedly connected to the top of the placement frame 19. The top of the first support claw 6 and the second support claw 20 both have support slots. The second support claws 20 on the placement frame 19 are used to temporarily support the galvanized steel pipe body 43 that has been blown inside, and the support slots provide limiting support for the galvanized steel pipe body 43.

[0044] The first inclined platform 1 is also equipped with a transfer assembly, which includes two support plates 21 and a transfer plate 22. The two support plates 21 are fixedly connected to the platform surface of the first inclined platform 1 and are located outside the two first cylinders 5. A second motor 23 is mounted on each of the two support plates 21. A drive shaft 24 is fixedly mounted on the output shaft of the second motor 23, and a driven shaft 25 is mounted on each of the two support plates 21. The drive shaft 24 and the driven shaft 25 on the same support plate 21 are arranged parallel to each other and are rotatably connected to the support plate 21. A swing arm 26 is mounted on the drive shaft 24 and the driven shaft 25, and the two swing arms 26 are respectively rotated to connect to the bottom of the transfer plate 22. The upper end of the transfer plate 22 is provided with three transfer grooves 2201. The second motor 23 drives the drive shaft 24 to move as follows: Figure 5 When the first direction a is rotated, the drive shaft 24 will drive the swing arm 26 to swing. The swing arm 26 will drive the transfer plate 22 to move upward first and then move horizontally and downward, thereby lifting the galvanized steel pipe body 43 and moving it horizontally to the next designated position.

[0045] The galvanized steel pipe 43, once galvanized, is pulled and conveyed by a traction conveyor above the zinc pot to the conveying assembly. The conveyor rollers 18 then transport the galvanized steel pipe 43 to the transfer location, which is as follows: Figure 1 Position 43 of the galvanized steel pipe at the middle conveyor assembly;

[0046] The second motor 23 drives the drive shaft 24 to rotate, the drive shaft 24 drives the swing arm 26 to swing, the swing arm 26 drives the transfer plate 22 to move, and the galvanized steel pipe 43 on the second support claw 20 is removed through the transfer groove 2201 of the transfer plate 22. The galvanized steel pipe 43 that has been blown internally on the first support claw 6 is lifted and placed on the second support claw 20. The galvanized steel pipe 43 on the conveying component is lifted and placed on the first support claw 6, thus realizing the transfer of the galvanized steel pipe 43.

[0047] Specifically, a connecting frame 27 is fixedly sleeved on the surface of the sealing cover 4. Both ends of the connecting frame 27 are provided with push pins 28, which are inserted into the ends of the connecting frame 27. A push cover 29 is fixedly sleeved on the surface of the push pins 28. A first support spring 30 is provided inside the push cover 29, with both ends of the first support spring 30 fixedly connected to the push cover 29 and the connecting frame 27, respectively. The two push pins 28 pass through the support platform 3 and are fixedly connected to a push frame 31. A second cylinder 32 is fixedly installed between the top of the push frame 31 and the support platform 3. After the galvanized steel pipe body 43 is clamped at multiple points, the second cylinder 32 pulls the push frame 31, causing it to approach the support platform 3. The push frame 31 then pushes the connecting frame 27 through the push pins 28. The connecting frame 27 causes the opening of the sealing cover 4 to fit over the end of the galvanized steel pipe body 43 until it is tightly closed, thus achieving sealing and support of the end of the galvanized steel pipe body 43.

[0048] The internal blowing component includes a nozzle 33, which is disposed inside the sealing cover 4. An air inlet pipe 34 is fixedly connected to the tail end of the nozzle 33. The sealing cover 4 is slidably fitted onto the surface of the air inlet pipe 34. A through-hole 35 is provided on the support platform 3, through which the air inlet pipe 34 passes and is connected to an external air source via a pipeline. A sleeve interface 401 is provided at the end of the sealing cover 4, through which the sealing cover 4 is sleeved with the air inlet pipe 34. The air inlet pipe 34 blows compressed gas into the inner ring of the galvanized steel pipe body 43 through the nozzle 33, achieving air blowing and leveling of the inner ring of the galvanized steel pipe body 43. The galvanized steel pipe body 43 is tilted and supported. This air blowing and leveling of the inner ring of the galvanized steel pipe body 43 allows molten zinc to flow out from the inner ring of the galvanized steel pipe body 43, and causes the zinc nodules at the tail end of the galvanized steel pipe body 43 to drip down, achieving the purpose of galvanizing material recovery and improving product quality.

[0049] The linear drive assembly includes a slide rail 36 and a first motor 37. The slide rail 36 is fixedly connected to the platform of the second tilting stage 2. A slide block 38 is slidably connected to the surface of the slide rail 36. A movable frame 3801 is fixedly connected to the top of the slide block 38 and is fixedly sleeved on the surface of the air inlet pipe 34. The first motor 37 is fixedly mounted on the surface of the support platform 3 and located below the opening 35. A threaded rod 39 is fixedly connected to the output end of the first motor 37, and the movable frame 3801 is threadedly connected to the surface of the threaded rod 39. After the sealing cover 4 seals and blocks the port of the galvanized steel pipe body 43, the first motor 37 drives the threaded rod 39 to rotate. The threaded rod 39 drives the movable frame 3801 to move, and the movable frame 3801 drives the air inlet pipe 34 to move, moving the nozzle 33 inside the galvanized steel pipe body 43. This achieves the goal of keeping the galvanized steel pipe body 43 stationary while the nozzle 33 moves inside, thus blowing and scraping the galvanized layer on the inner ring of the galvanized steel pipe body 43.

[0050] During the process of pushing the sealing cover 4, the sealing cover 4 will dock with the port of the galvanized steel pipe body 43. The first support spring 30 will provide buffer during the initial docking process to reduce the force of rigid collision. Then, the push pin 28 will drive the push cover 29 to gradually compress the first support spring 30 and gradually press against the connecting frame 27, thereby indirectly pressing the sealing cover 4 against the port of the galvanized steel pipe body 43.

[0051] To ensure airtightness, a sealing ring can be installed inside the opening of the sealing cover 4, which is beneficial for the effective sealing of the joint between the sealing cover 4 and the galvanized steel pipe body 43. A sealing ring can also be installed at the sleeve interface 401 between the sealing cover 4 and the air inlet pipe 34, which is beneficial for the sealing cover 4 and the air inlet pipe 34 to maintain a seal through sleeve contact.

[0052] Specifically, the nozzle 33 includes an outer cover 3301 and an inner guide body 3302. The inner guide body 3302 is fixed to the outer cover 3301 by a connecting rod 3303. An air passage 3304 and an annular jet nozzle 3305 are formed between the inner guide body 3302 and the outer cover 3301. The outer cover 3301 is connected to the air inlet pipe 34. After the compressed gas enters the outer cover 3301, it will be discharged from the jet nozzle 3305 through the air passage 3304 to blow and scrape the inner wall of the galvanized steel pipe body 43.

[0053] like Figure 7As shown, in one embodiment, a reflector 41 is fixedly connected to the top of the moving frame 3801, and a laser rangefinder 40 is fixedly installed on the surface of the pushing frame 31. The laser rangefinder 40 faces the reflector 41. A controller 42 is also fixedly installed on the platform of the second tilting stage 2. The controller 42 is used to control the rotation speed of the first motor 37 according to the distance between the reflector 41 and the laser rangefinder 40 detected by the laser rangefinder 40. The galvanized steel pipe body 43 is inclined, so the galvanizing liquid will converge at the tail end of the galvanized steel pipe body 43, resulting in a relatively thicker galvanized layer. During the process of the linear drive assembly driving the air intake pipe 34 to move and insert into the galvanized steel pipe body 43, when the nozzle 33 of the air intake pipe 34 approaches the bottom end of the galvanized steel pipe body 43, a corresponding distance b will be formed between the laser range sensor 40 and the reflector 41. By storing the detected distance b between the reflector 41 and the laser range sensor 40, the laser range sensor 40 will continuously detect the distance from the reflector 41 to the laser range sensor 40. When the controller 42 receives the distance value detected by the laser range sensor 40 and compares it with the distance b, if it is less than the distance b (preset threshold), the controller will detect the distance. At the same time, the first motor 37 is controlled to reduce its speed, thereby slowing down the movement of the moving frame 3801, and thus slowing down the movement of the air inlet pipe 34 and the nozzle 33. This extends the dwell time of the nozzle 33 at the tail end of the galvanized steel pipe, and slows down the movement speed of the nozzle 33 when it moves to a position near the tail end inside the galvanized steel pipe body 43. This is beneficial for finely blowing away the thicker galvanized layer. Areas with thicker galvanized layers require more blowing time and airflow impact to remove excess zinc liquid. Slowing down the movement speed can extend the dwell time of the nozzle 33 in this area, allowing the high-speed airflow to act on the zinc layer for a sufficient time, thereby more effectively removing excess zinc liquid and avoiding the presence of zinc nodules and zinc spikes at the tail end of the galvanized steel pipe body 43.

[0054] The laser rangefinder 40 emits a laser beam, which is reflected by a reflector 41. The laser rangefinder 40 receives the reflected laser beam and determines the target distance by measuring the time required for the laser to travel to and from the target. This is all existing technology.

[0055] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An internal blowing device for a galvanized steel pipe, comprising a first tilting platform (1), characterized in that: First support components are provided at both ends of the top of the first tilting platform (1). The two first support components are used to support the galvanized steel pipe body (43). A clamping and positioning component is provided between the two first support components. The clamping and positioning component is used to clamp and position the galvanized steel pipe body (43) at multiple points. An internal blowing component is provided at the upper end of the first tilting platform (1). The internal blowing component includes a second tilting platform (2). A support platform (3) is fixedly installed on the second tilting platform (2). A sealing cover (4) is provided on the support platform (3). The sealing cover (4) is used to seal and block the end of the galvanized steel pipe body (43) after it is clamped and positioned by the clamping and positioning component. An internal blowing component is provided inside the sealing cover (4). The internal blowing component penetrates the sealing cover (4) and the support platform (3). A linear drive component is also provided on the second tilting platform (2). The linear drive component is used to drive the internal blowing component linearly. The internal blowing component moves inside the galvanized steel pipe body (43).

2. The internal blowing device for a galvanized steel pipe according to claim 1, characterized in that: The first support assembly includes two first cylinders (5), which are fixedly mounted on the platform of the first tilting stage (1), and the piston rod ends of the two first cylinders (5) are fixedly connected to first support claws (6).

3. The internal blowing device for a galvanized steel pipe according to claim 2, characterized in that: The clamping and positioning assembly includes a positioning platform (7), which is fixedly connected to the platform of the first inclined platform (1) and located between two first cylinders (5). The top of the positioning platform (7) is provided with multiple sliding grooves (8), and two grippers (9) are slidably arranged in the sliding grooves (8). The clamping surfaces of the two grippers (9) are arc-shaped surfaces adapted to the surface of the galvanized steel pipe body (43). The two grippers (9) are symmetrically arranged. A support rod (10) is fixedly connected to the inner wall of the sliding groove (8), and the two grippers (9) are sleeved on the surface of the support rod (10). A two-way cylinder (11) is fixedly installed at the bottom of the positioning platform (7). The two piston rod ends of the two-way cylinder (11) are fixedly connected to a linkage frame (12), and the two linkage frames (12) are respectively fixedly connected to the two grippers (9) inside the sliding groove (8). The top of the positioning platform (7) is also provided with a plurality of auxiliary support components. The auxiliary support components include two connecting seats (13). The top of each of the two connecting seats (13) is fixedly connected to a support column (14). An auxiliary support seat (15) is sleeved on the surface of each of the two support columns (14). The top of the auxiliary support seat (15) has an auxiliary support slot. A second support spring (16) is sleeved on the surface of each of the two support columns (14). The two ends of the second support spring (16) are fixedly connected to the auxiliary support seat (15) and the connecting seat (13) respectively.

4. The internal blowing device for a galvanized steel pipe according to claim 1, characterized in that: A connecting frame (27) is fixedly sleeved on the surface of the sealing cover (4). Both ends of the connecting frame (27) are provided with push pins (28). The push pins (28) are inserted into the ends of the connecting frame (27). A push cover (29) is fixedly sleeved on the surface of the push pins (28). A first support spring (30) is provided inside the push cover (29). Both ends of the first support spring (30) are fixedly connected to the push cover (29) and the connecting frame (27) respectively. The two push pins (28) pass through the support platform (3) and are fixedly connected to the push frame (31). A second cylinder (32) is fixedly installed between the top of the push frame (31) and the support platform (3).

5. The internal blowing device for a galvanized steel pipe according to claim 4, characterized in that: The internal blowing component includes a nozzle (33), which is disposed inside the sealing cover (4). The tail end of the nozzle (33) is fixedly connected to an air inlet pipe (34). The sealing cover (4) is slidably sleeved on the surface of the air inlet pipe (34). The support platform (3) has an opening (35). The air inlet pipe (34) passes through the opening (35) and is connected to an external air source through a pipeline.

6. The internal blowing device for a galvanized steel pipe according to claim 5, characterized in that: The linear drive assembly includes a slide rail (36) and a first motor (37). The slide rail (36) is fixedly connected to the table surface of the second tilting platform (2). A slide block (38) is slidably connected to the surface of the slide rail (36). A movable frame (3801) is fixedly connected to the top of the slide block (38). The movable frame (3801) is fixedly sleeved on the surface of the air intake pipe (34). The first motor (37) is fixedly installed on the surface of the support platform (3) and located below the opening (35). A threaded rod (39) is fixedly connected to the output end of the first motor (37). The movable frame (3801) is threadedly connected to the surface of the threaded rod (39).

7. The internal blowing device for a galvanized steel pipe according to claim 6, characterized in that: A reflector plate (41) is fixedly connected to the top of the moving frame (3801), and a laser rangefinder (40) is fixedly installed on the surface of the pushing frame (31). The laser rangefinder (40) faces the reflector plate (41). A controller (42) is also fixedly installed on the platform of the second tilting stage (2). The controller (42) is used to control the rotation speed of the first motor (37) according to the distance between the reflector plate (41) and the laser rangefinder (40) detected by the laser rangefinder (40).

8. The internal blowing device for a galvanized steel pipe according to claim 3, characterized in that: The first tilting platform (1) is also provided with a conveying assembly, which includes a first mounting frame (17), which is located on the left side of the positioning platform (7), and a plurality of conveying rollers (18) are rotatably connected to the first mounting frame (17).

9. The internal blowing device for a galvanized steel pipe according to claim 8, characterized in that: The first tilting platform (1) is also provided with a temporary placement component, which includes a placement rack (19). The placement rack (19) is located on the right side of the positioning platform (7), and a plurality of second support claws (20) are fixedly connected to the top of the placement rack (19).

10. The internal blowing device for a galvanized steel pipe according to claim 9, characterized in that: The first tilting platform (1) is also provided with a transfer assembly, which includes two support plates (21) and a transfer plate (22). The two support plates (21) are fixedly connected to the table surface of the first tilting platform (1) and located outside the two first cylinders (5). A second motor (23) is installed on each of the two support plates (21). A drive shaft (24) is fixedly installed on the output shaft of the second motor (23), and a driven shaft (25) is provided on each of the two support plates (21). The drive shaft (24) and the driven shaft (25) on the same support plate (21) are arranged parallel to each other. The drive shaft (24) and the driven shaft (25) are rotatably connected to the support plate (21). A swing arm (26) is installed on the drive shaft (24) and the driven shaft (25). The two swing arms (26) are rotated to the bottom of the transfer plate (22). The upper end of the transfer plate (22) is provided with three transfer grooves (2201).

Images