A multi-stage scar scrapper for longitudinal weld of steel pipe

Abstract

The utility model discloses a kind of steel pipe longitudinal weld multi-stage scar removal equipment, belong to steel pipe scar removal technical field, including roller conveyor, the top of the roller conveyor is fixedly connected with support frame, clamping assembly is provided on the roller conveyor, scar removal assembly is provided on the support frame, the scar removal assembly includes first threaded rod, first mounting bracket, first scraper, second threaded rod, second mounting plate, second scraper, third threaded rod, third mounting plate and third scraper, the top of the support frame is connected with the outer wall of first threaded rod with screw thread, the bottom of the first threaded rod is rotatably connected with the top of first mounting bracket. By setting scar removal assembly, realize the removal of scar on steel pipe, scar removal assembly can remove the defect on steel pipe in ladder type, avoid single processing incomplete or excessive cutting, while removing scar in ladder type, can reduce scraper consumption, prolong core component service life.

Description

Technical Field

[0001] This invention relates to the field of steel pipe descaling, and in particular to a multi-stage descaling device for longitudinal weld seams of steel pipes. Background Technology

[0002] In critical industries such as oil, natural gas, and chemicals, steel pipes serve as core components for transporting fluids and bearing pressure. The quality of their welds directly determines the safety, sealing performance, and service life of the pipeline system. During the welding process, defects such as weld scars and burrs often occur in the weld area, affecting the strength, sealing, and appearance of the steel pipe. Currently, post-weld treatment of steel pipes mainly includes grinding, polishing, and scraping. With increasing industrial demands, the requirements for the quality of steel pipe welds are becoming increasingly stringent, highlighting the problems of low efficiency and poor effectiveness of traditional treatment methods. In recent years, automated weld treatment equipment has gradually become a research hotspot, but existing equipment still has shortcomings in areas such as scraping depth control and multi-stage treatment.

[0003] However, current industry technologies for treating longitudinal weld defects in steel pipes are mainly divided into three categories: manual grinding, single-stage mechanical scraping, and laser polishing. However, all of them have significant technical bottlenecks and cannot meet the demands of high-quality, high-efficiency, low-cost, and low-loss industrial production. Manual grinding is inefficient, relies on experience for quality, and has poor consistency. Although single-stage scraping machines are initially automated, they are prone to incomplete scraping or over-cutting due to the lack of graded adjustment, and additional polishing is required. Laser polishing has high precision but is costly, slow, and has strict environmental requirements, making it difficult to popularize. Therefore, a new type of equipment is needed that can remove weld scars in a step-by-step manner, precisely control the cutting amount, and reduce losses to meet the needs of high-quality, large-scale production. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a multi-stage scraping device for longitudinal weld seams of steel pipes. This addresses the problems of low efficiency and inconsistent quality in manual grinding, inaccurate scraping depth control and easy over-cutting in single-stage scraping machines, and the high cost of laser polishing equipment, which is unsuitable for large-scale production. The system includes a roller conveyor, with a support frame fixedly connected to its top. A clamping assembly is mounted on the roller conveyor, and a scraping assembly is mounted on the support frame. The scraping assembly includes a first threaded rod, a first mounting bracket, a first scraper, a second threaded rod, a second mounting plate, a second scraper, a third threaded rod, a third mounting plate, and a third scraper. The top of the support frame is threadedly connected to the outer wall of the first threaded rod. The bottom of the first threaded rod is rotatably connected to the top of the first mounting bracket. The bottom of the first mounting bracket is detachably connected to the top of the first scraper. The first mounting bracket is threadedly connected to the outer wall of the second threaded rod. The bottom end of the second threaded rod is rotatably connected to the top of the second mounting plate. The bottom of the second mounting plate is detachably connected to the top of the second scraper. The second mounting plate is threadedly connected to the outer surface of the third threaded rod. The bottom end of the third threaded rod is rotatably connected to the top of the third mounting plate. The bottom of the third mounting plate is detachably connected to the top of the third scraper.

[0005] A first limiting rod is fixedly connected to the top of the first mounting bracket, and the first limiting rod is slidably connected to the support frame. A second limiting rod is fixedly connected to the top of the second mounting plate, and the second limiting rod is slidably connected to the support frame. A third limiting rod is fixedly connected to the top of the third mounting plate, and the third limiting rod is slidably connected to the support frame. By setting the first limiting rod, the second limiting rod, and the third limiting rod, the first mounting bracket, the second mounting plate, and the third mounting plate are limited, preventing them from shaking during movement and use, thereby avoiding affecting the effect of the first scraper, the second scraper, and the third scraper on scraping the steel pipe.

[0006] The clamping assembly includes an extension rod, a conveyor belt, an electromagnet, and a telescopic mechanism. The extension rod is slidably connected to the top of the roller conveyor, and the top end of the extension rod is fixedly connected to the bottom of the conveyor belt. An electromagnet is installed on the conveyor belt. By setting up the clamping assembly, stable transmission of the steel pipe can be achieved.

[0007] The telescopic mechanism includes a fourth threaded rod and a top plate. The fourth threaded rod is threadedly connected to an ear plate provided on the outer wall of the roller conveyor. The outer wall of the conveyor belt is fixedly connected to one end of the top plate. The bottom of the top plate fits against the top of the fourth threaded rod. By setting the fourth threaded rod and the top plate, the height of the conveyor belt can be adjusted, thereby allowing the clamping assembly to adapt to different steel pipes.

[0008] A positioning tube is fixedly connected to the bottom of the top plate. The inner wall of the positioning tube is in contact with the outer wall of the top end of the fourth threaded rod. By setting the positioning tube, the positioning of the top plate and the fourth threaded rod is realized, so as to facilitate the fourth threaded rod to push the top plate.

[0009] A stabilizing plate is fixedly connected to the inner wall of the support of the conveyor belt. The bottom of the stabilizing plate is in contact with the inner wall of the conveyor belt. By setting the stabilizing plate, the stability of the steel pipe is achieved, and the steel pipe is prevented from shaking when the conveyor belt and electromagnet are transported, thereby avoiding affecting the removal of the steel pipe scars.

[0010] A collection box is fixedly connected to the bottom of the roller conveyor. A cooling fan is installed on the outer wall of the collection box, and a filter plate is installed on the inner wall of the collection box. By setting up the collection box, filter plate, and cooling fan, the removed impurities can be collected, thereby preventing impurities from scattering into the outside world and affecting the surrounding environment.

[0011] In summary, by setting up a scraping component, scars on steel pipes can be removed. The scraping component can remove defects on steel pipes in a step-by-step manner, avoiding incomplete processing or excessive cutting in a single operation. At the same time, the step-by-step removal of scars can reduce scraper wear and extend the service life of core components.

[0012] By setting up clamping components, stable transmission of steel pipes is achieved, thereby preventing the steel pipes from shifting during transmission. This ensures precise positioning of the weld seam, guarantees the accuracy of the scraping process, and prevents wear or decreased precision of equipment components due to uneven stress over a long period of time. This also suppresses transmission vibration and improves the stability of equipment operation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a multi-stage scraping device for longitudinal weld seams of steel pipes according to the present invention; Figure 2 This is a schematic diagram of a support frame and related parts for a multi-stage scraping device for longitudinal weld seams of steel pipes according to the present invention. Figure 3 This is a schematic diagram of the first mounting frame and related parts of a multi-stage scraping device for longitudinal weld seams of steel pipes according to the present invention; Figure 4 This is a schematic diagram of the conveyor belt and related parts of a multi-stage scraping device for longitudinal weld seams of steel pipes according to the present invention; Figure 5 This is a schematic diagram of the extension rod and related parts of a multi-stage scraping device for longitudinal weld seams of steel pipes according to the present invention.

[0014] Explanation of reference numerals in the attached figures: 1. Roller conveyor; 2. Support frame; 3. First threaded rod; 4. First mounting frame; 5. First scraper; 6. Second threaded rod; 7. Second mounting plate; 8. Second scraper; 9. Third threaded rod; 10. Third mounting plate; 11. Third scraper; 12. First limiting rod; 13. Second limiting rod; 14. Third limiting rod; 15. Extension rod; 16. Conveyor belt; 17. Electromagnet; 18. Fourth threaded rod; 19. Top plate; 20. Positioning tube; 21. Stabilizing plate; 22. Collection box; 23. Filter plate; 24. Cooling fan. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0016] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the present invention provides a technical solution: a multi-stage scraping device for longitudinal weld seams of steel pipes, including a roller conveyor 1 for conveying steel pipes. A support frame 2 is fixedly connected to the top of the roller conveyor 1, supporting multiple components. A clamping assembly is provided on the roller conveyor 1, and a scraping assembly is provided on the support frame 2. The scraping assembly includes a first threaded rod 3, a first mounting frame 4, a first scraper 5, a second threaded rod 6, a second mounting plate 7, a second scraper 8, a third threaded rod 9, a third mounting plate 10, and a third scraper 11. The top of the support frame 2 is threadedly connected to the outer wall of the first threaded rod 3, and the bottom of the first threaded rod 3 is rotatably connected to the top of the first mounting frame 4. Rotation of the first threaded rod 3 can drive the first mounting frame 4 to move up and down. The bottom of the first mounting frame 4 is detachably connected to the top of the first scraper 5. The first mounting frame 4 is used to install the first scraper 5, and the first scraper 5 is used to scrape weld seams on the steel pipe. The first cleaning process involves threaded connection between the first mounting bracket 4 and the outer wall of the second threaded rod 6, slidable connection between the second threaded rod 6 and the support bracket 2, and rotatable connection between the bottom end of the second threaded rod 6 and the top of the second mounting plate 7. The second threaded rod 6 is used to drive the second mounting plate 7 to move up and down. The bottom of the second mounting plate 7 is detachably connected to the top of the second scraper 8, allowing the second mounting plate 7 to mount the second scraper 8. The second scraper 8 can then perform a second cleaning of the weld scars on the steel pipe. The second mounting plate 7 is then threaded to the outer wall of the third threaded rod 9, slidable connection between the third threaded rod 9 and the support bracket 2 and the second mounting plate 7, and rotatable connection between the bottom end of the third threaded rod 9 and the top of the third mounting plate 10. The third threaded rod 9 is used to enable the third mounting plate 10 to move up and down. The bottom of the third mounting plate 10 is detachably connected to the top of the third scraper 11, allowing the third mounting plate 10 to mount the third scraper 11. The third scraper 11 is then used to perform a third cleaning of the scars on the steel pipe.

[0017] Reference Figure 2 and Figure 3 The top of the first mounting bracket 4 is fixedly connected to a first limiting rod 12, which is slidably connected to the support frame 2. The first limiting rod 12 is used to limit the first mounting bracket 4. The top of the second mounting plate 7 is fixedly connected to a second limiting rod 13, which is slidably connected to the support frame 2. The second limiting rod 13 is used to limit the second mounting plate 7. The top of the third mounting plate 10 is fixedly connected to a third limiting rod 14, which is slidably connected to the support frame 2. The third limiting rod 14 is used to limit the third mounting plate 10.

[0018] Reference Figure 4 and Figure 5The clamping assembly includes an extension rod 15, a conveyor belt 16, an electromagnet 17, and a telescopic mechanism. The extension rod 15 is slidably connected to the top of the roller conveyor 1, and the top end of the extension rod 15 is fixedly connected to the bottom of the conveyor belt 16. The extension rod 15 can limit the movement of the conveyor belt 16 to prevent it from shaking. An electromagnet 17 is installed on the conveyor belt 16, which can attract the steel pipe to ensure the stability of the steel pipe transportation.

[0019] Reference Figure 4 and Figure 5 The telescopic mechanism includes a fourth threaded rod 18 and a top plate 19. The fourth threaded rod 18 is threadedly connected to an ear plate provided on the outer wall of the roller conveyor 1. The fourth threaded rod 18 can reciprocate up and down on the roller conveyor 1. The outer wall of the conveyor belt 16 is fixedly connected to one end of the top plate 19. The bottom of the top plate 19 is in contact with the top of the fourth threaded rod 18. With the cooperation of the top plate 19 and the fourth threaded rod 18, the fourth threaded rod 18 can make the top plate 19 move up and down.

[0020] Reference Figure 5 A positioning tube 20 is fixedly connected to the bottom of the top plate 19. The inner diameter of the positioning tube 20 is the same as the diameter of the fourth threaded rod 18. The inner wall of the positioning tube 20 fits against the outer wall of the top end of the fourth threaded rod 18. The positioning tube 20 can make the positioning of the fourth threaded rod 18 and the top plate 19 more accurate.

[0021] Reference Figure 4 and Figure 5 The inner wall of the support of the conveyor belt 16 is fixedly connected with a stabilizing plate 21. Multiple stabilizing plates 21 are provided and are evenly distributed. The bottom of the stabilizing plate 21 is in contact with the inner wall of the conveyor belt 16. The stabilizing plate 21 can stabilize the conveyor belt 16 and the electromagnet 17, thereby ensuring the stability of the steel pipe transmission.

[0022] Reference Figure 2 A collection box 22 is fixedly connected to the bottom of the roller conveyor 1. The collection box 22 is used to collect the debris removed. A cooling fan 24 is provided on the outer wall of the collection box 22. The cooling fan 24 can generate suction to prevent debris from splashing and at the same time accelerate the airflow to increase the heat dissipation efficiency. A filter plate 23 is provided on the inner wall of the collection box 22. The filter plate 23 is used to protect the cooling fan 24 and prevent debris from damaging the cooling fan 24.

[0023] Working principle: like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, this multi-stage scraping device for longitudinal weld seams of steel pipes operates by first adjusting the first scraper 5, the second scraper 8, and the third scraper 11 by rotating the first threaded rod 3, based on the size of the steel pipe. Next, the second threaded rod 6 moves the second mounting plate 7 and the third mounting plate 10, adjusting the second scraper 8 and the third scraper 11. Finally, the third threaded rod 9 adjusts the third mounting plate 10, adjusting the third scraper 11. After the scrapers are adjusted, the steel pipe is placed on the roller conveyor 1, which then transports the pipe. During transport, the conveyor belt 16 moves synchronously with the roller conveyor 1, and the electromagnet 17 on the conveyor belt 16 attracts and fixes the steel pipe, ensuring stable transport. After continuous transport, the weld scars on the steel pipe are removed by the first scraper 5, the second scraper 8, and the third scraper 11, ensuring the pipe's usability.

[0024] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A multi-stage scraping device for longitudinal weld seams of steel pipes, comprising a roller conveyor (1), characterized in that: A support frame (2) is fixedly connected to the top of the roller conveyor (1). A clamping assembly is provided on the roller conveyor (1), and a scraping assembly is provided on the support frame (2). The scraping assembly includes a first threaded rod (3), a first mounting frame (4), a first scraper (5), a second threaded rod (6), a second mounting plate (7), a second scraper (8), a third threaded rod (9), a third mounting plate (10), and a third scraper (11). The top of the support frame (2) is threadedly connected to the outer wall of the first threaded rod (3), and the bottom of the first threaded rod (3) is rotatably connected to the top of the first mounting frame (4). The bottom of the first mounting bracket (4) is detachably connected to the top of the first scraper (5). The first mounting bracket (4) is threaded to the outer wall of the second threaded rod (6). The bottom end of the second threaded rod (6) is rotatably connected to the top of the second mounting plate (7). The bottom of the second mounting plate (7) is detachably connected to the top of the second scraper (8). The second mounting plate (7) is threaded to the outer surface of the third threaded rod (9). The bottom end of the third threaded rod (9) is rotatably connected to the top of the third mounting plate (10). The bottom of the third mounting plate (10) is detachably connected to the top of the third scraper (11).

2. The multi-stage scraping device for longitudinal weld seams of steel pipes according to claim 1, characterized in that: The top of the first mounting bracket (4) is fixedly connected to a first limiting rod (12), which is slidably connected to the support frame (2). The top of the second mounting plate (7) is fixedly connected to a second limiting rod (13), which is slidably connected to the support frame (2). The top of the third mounting plate (10) is fixedly connected to a third limiting rod (14), which is slidably connected to the support frame (2).

3. The multi-stage scraping device for longitudinal weld seams of steel pipes according to claim 1, characterized in that: The clamping assembly includes an extension rod (15), a conveyor belt (16), an electromagnet (17), and a telescopic mechanism. The extension rod (15) is slidably connected to the top of the roller conveyor (1), and the top end of the extension rod (15) is fixedly connected to the bottom of the conveyor belt (16). An electromagnet (17) is provided on the conveyor belt (16).

4. The multi-stage scraping device for longitudinal weld seams of steel pipes according to claim 3, characterized in that: The telescopic mechanism includes a fourth threaded rod (18) and a top plate (19). The fourth threaded rod (18) is threadedly connected to the ear plate provided on the outer wall of the roller conveyor (1). The outer wall of the conveyor belt (16) is fixedly connected to one end of the top plate (19). The bottom of the top plate (19) is in contact with the top of the fourth threaded rod (18).

5. The multi-stage scraping device for longitudinal weld seams of steel pipes according to claim 4, characterized in that: The bottom of the top plate (19) is fixedly connected to a positioning tube (20), and the inner wall of the positioning tube (20) is in contact with the outer wall of the top end of the fourth threaded rod (18).

6. The multi-stage scraping device for longitudinal weld seams of steel pipes according to claim 3, characterized in that: A stabilizing plate (21) is fixedly connected to the inner wall of the support of the conveyor belt (16), and the bottom of the stabilizing plate (21) is in contact with the inner wall of the conveyor belt (16).

7. The multi-stage scraping device for longitudinal weld seams of steel pipes according to claim 1, characterized in that: The bottom of the roller conveyor (1) is fixedly connected to a collection box (22), the outer wall of the collection box (22) is provided with a heat dissipation fan (24), and the inner wall of the collection box (22) is provided with a filter plate (23).

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