A heat-shrinkable tape for external corrosion protection of a bent pipe

Abstract

The utility model discloses a kind of elbow heat shrinkable tape outer anticorrosive devices, it is related to material anticorrosion technical field, including vertical plate, the center of vertical plate is equipped with circular through-hole, elbow passes through circular through-hole and carries out directional movement, the rotary ring is wound on elbow by rotating and heat shrinkable tape storage roller heat shrinkable tape, the both sides of vertical plate are provided with fixed frame and movable frame, the utility model is positioned and limited to elbow by the unique cooperation design of guide roller one and guide roller two, so that heat shrinkable tape is evenly wound on elbow outer wall, in addition movable frame can be flexibly slid along the structure of guide rail, so that user can accurately adjust limit curvature according to elbow of different curvature. Whether it is curvature larger or smaller elbow, stable limiting and even winding can be realized, greatly widen the application range of device, satisfy the production and processing demand of diversification, improve overall practicality and work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of material corrosion protection technology, and in particular to an external corrosion protection device for heat shrinkable tape of bent pipe. Background Technology

[0002] Heat shrinkable tape is a material composed of radiation-crosslinked polyolefin substrate and hot melt adhesive. The substrate, after being crosslinked by electron beam irradiation, possesses a "memory effect," causing it to shrink tightly and wrap around the pipe upon heating. The hot melt adhesive melts upon heating to form a sealing layer. It is mainly used for corrosion protection and repair of welded joints in buried or overhead pipelines, as well as for repairing damaged areas. It features excellent corrosion resistance, good sealing, convenient construction, resistance to chemical corrosion, and impact resistance, effectively protecting pipelines from erosion by soil, moisture, and the external environment, thus extending the pipeline's service life.

[0003] However, in the existing technology, heat shrinkable tape is mostly suitable for straight pipe corrosion protection. When used for bent pipes, due to the special curved surface structure of bent pipes, it is difficult to accurately control the movement speed of the heat shrinkable tape during the winding process. It is easy to have the winding too sparse or too dense, resulting in uneven distribution. This not only affects the integrity of the anti-corrosion layer, but also reduces the protective effect and cannot meet the anti-corrosion requirements of the bent pipe. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing an external anti-corrosion device for heat shrinkable tape of bent pipe.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an external anti-corrosion device for heat shrinkable tape on bent pipes, comprising a vertical plate, a circular opening at the center of the vertical plate, through which the bent pipe passes and moves in a directional manner, and a rotating ring that winds the heat shrinkable tape on the heat shrinkable tape receiving roller onto the bent pipe by rotation, and fixed frames and movable frames provided on both sides of the vertical plate, a guide roller one fixedly connected to the top of the fixed frame, and a guide roller two fixedly connected to the top of the movable frame, the height of the guide roller two exceeding the height of the guide roller one, and the bent pipe being positioned by the two guide rollers one and two guide rollers two.

[0006] Preferably, a base plate is fixedly connected to the bottom end of the upright plate, and a servo motor is fixedly connected to the base plate.

[0007] Preferably, the surface of the upright plate is provided with a plurality of tensioning rollers, which are evenly distributed on the outer periphery of the circular opening.

[0008] Preferably, the output end of the servo motor is fixedly connected to one of the tensioning wheels, and a tensioning belt is driven between the tensioning wheels.

[0009] Preferably, one end of the tensioning wheel passes through the side wall of the vertical plate and is fixedly connected to a drive roller, and the outer side wall of the drive roller overlaps with the outer side wall of the rotating ring.

[0010] Preferably, the surface of the fixed frame is provided with a guide rail, and two guide posts are provided on one side of the movable frame. The movable frame is slidably connected to the guide rail through the guide posts.

[0011] Preferably, a limit baffle is provided at one end of the movable frame, and a handle is fixedly connected to the other side of the movable frame.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, the unique design of guide roller one and guide roller two positions and limits the bend, ensuring that the heat-shrinkable tape is evenly wound around the outer wall of the bend. Furthermore, the movable frame can slide flexibly along the guide rail, allowing users to precisely adjust the limiting curvature according to the different curvatures of the bend. Whether the bend has a large or small curvature, stable limiting and uniform winding can be achieved, greatly expanding the application range of the device, meeting diverse production and processing needs, and improving overall practicality and work efficiency.

[0014] 2. In this invention, by coating the outside of the heat-shrinkable tape with an anti-corrosion coating, after being wrapped around the surface of the bend, it can shrink rapidly after heat treatment, tightly and firmly adhering to the bend, forming a tight sealing barrier. This not only effectively isolates external corrosive substances, moisture, etc., but also prevents the bend from being corroded by external environmental factors, significantly extending the service life of the bend and ensuring its stable operation under complex working conditions. Attached Figure Description

[0015] Figure 1 This utility model provides a three-dimensional structural diagram of an external anti-corrosion device for heat-shrinkable pipe bending tape;

[0016] Figure 2 This utility model provides a schematic diagram of the other side of the upright plate of an external anti-corrosion device for a heat-shrinkable tube for bending pipes.

[0017] Figure 3 This utility model provides a schematic diagram of the fixed frame and movable frame structure of the external anti-corrosion device for heat shrinkable tape of bent pipe;

[0018] Figure 4 This utility model presents a simplified schematic diagram illustrating the principle of a heat-shrinkable tape external anti-corrosion device for bends with different curvatures, designed for limiting bends.

[0019] Legend: 1. Vertical plate; 2. Rotary ring; 3. Heat shrinkable tape storage roller; 4. Drive roller; 5. Fixed frame; 6. Movable frame; 7. Servo motor; 8. Tensioning wheel; 9. Tensioning belt; 10. Circular opening; 11. Guide roller one; 12. Guide roller two; 13. Handle; 14. Limiting baffle; 15. Guide rail. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: As Figure 1-4 As shown, this utility model provides an external anti-corrosion device for heat shrinkable tape on bent pipes, including a vertical plate 1. A rotating ring 2 is rotatably connected to the side wall of the vertical plate 1. A heat shrinkable tape receiving roller 3 is fixedly connected to the outer side wall of the rotating ring 2. Heat shrinkable tape is wound around the outer side wall of the heat shrinkable tape receiving roller 3. The outer side of the heat shrinkable tape is coated with an anti-corrosion coating. A circular opening 10 is provided at the center of the vertical plate 1. The bent pipe passes through the circular opening 10 and moves in a directional manner. The rotating ring 2 winds the heat shrinkable tape on the heat shrinkable tape receiving roller 3 onto the bent pipe by rotating. Fixed frames 5 and movable frames 6 are provided on both sides of the vertical plate 1. A guide roller 11 is fixedly connected to the top of the fixed frame 5. A guide roller 22 is fixedly connected to the top of the movable frame 6. The height of the guide roller 22 exceeds the height of the guide roller 11. The bent pipe is positioned by the two guide rollers 11 and the two guide rollers 22.

[0023] The specific setup and function of this embodiment are described below. A layer of heat shrinkable tape is wrapped around the outer surface of the bend, and a protective coating is applied to the outer surface of the heat shrinkable tape to effectively achieve anti-corrosion effect. After the heat shrinkable tape is wrapped around the bend, it is heated to a certain temperature, causing the heat shrinkable tape to shrink and become firmly attached to the outer surface of the bend, thereby forming a sealing effect on the bend. In order to completely wrap the heat shrinkable tape around the bend, the bend needs to be moved forward while rotating the rotating ring 2. Fixed frames 5 and movable frames 6 are set on both sides of the upright plate 1, and guide roller 11 and guide roller 22 are respectively mounted on the fixed frame 5 and the movable frame 6. The upper surface of guide roller 11 contacts the bend, and the lower surface of guide roller 22 contacts the bend. The bend is limited by the two guide rollers 11 and guide roller 22. At this time, the bend can be rotated around the arc trajectory by hand. At this time, the winding position of the bend is always at the center of the circular opening 10, so that the heat shrinkable tape is evenly wrapped around the bend.

[0024] Example 2: Figure 2 and Figure 3 As shown, a base plate is fixedly connected to the bottom end of the upright plate 1, and a servo motor 7 is fixedly connected to the base plate. Several tensioning rollers 8 are provided on the surface of the upright plate 1, evenly distributed around the outer periphery of the circular opening 10. The output end of the servo motor 7 is fixedly connected to one of the tensioning rollers 8, and a tensioning belt 9 is connected between the tensioning rollers 8. One end of the tensioning roller 8 passes through the side wall of the upright plate 1 and is fixedly connected to a drive roller 4. The outer side wall of the drive roller 4 overlaps with the outer side wall of the rotating ring 2. A guide rail 15 is provided on the surface of the fixed frame 5, and two guide posts are provided on one side of the movable frame 6. The movable frame 6 is slidably connected to the guide rail 15 via the guide posts. A limit baffle 14 is provided at one end of the movable frame 6, and a handle 13 is fixedly connected to the other side of the movable frame 6.

[0025] The overall effect of this embodiment is that, in order to meet the requirements of bending tubes with different curvatures for winding heat shrinkable tape, guide roller 11 is fixedly connected to both sides of the upright plate 1 through the fixing frame 5, and guide roller 212 is slidably connected to both sides of the upright plate 1 through the movable frame 6. Since the height difference between guide roller 11 and guide roller 212 is always a fixed value, by changing the horizontal distance between guide roller 11 and guide roller 212, the curvature of guide roller 11 and guide roller 212 for matching and limiting can be adjusted so that it can meet the limiting requirements of different sizes and meet the requirements of heat shrinkable tape winding processing operation.

[0026] The device's operation and working principle are as follows: The bent tube passes through the circular opening 10 of the upright plate 1 and is positioned by guide roller 11 on the fixed frame 5 and guide roller 22 on the movable frame 6. Guide roller 22 is higher than guide roller 11, and the two guide rollers limit the bent tube. The bent tube is manually pushed forward to rotate around an arc trajectory, ensuring that the winding position is at the center of the circular opening 10. The rotating ring 2 rotates, driving the heat shrinkable tape receiving roller 3 to wrap the heat shrinkable tape with an anti-corrosion coating on the bent tube. After wrapping, it is heated to shrink and seal the heat shrinkable tape firmly on the outer surface of the bent tube. The servo motor 7 at the bottom of the upright plate 1 drives the drive roller 4 through the tension wheel 8 and tension belt 9. The drive roller 4 overlaps with the rotating ring 2 to make it rotate. The movable frame 6 is slidably connected to the guide rail 15 on the fixed frame 5 through the guide column. The horizontal distance between guide roller 11 and guide roller 22 can be adjusted to change the curvature of their matching and limiting, so as to meet the winding requirements of bent tubes with different curvatures.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model 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 utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A heat-shrinkable tape external anti-corrosion device for bent pipes, comprising a vertical plate (1), characterized in that: A rotating ring (2) is rotatably connected to the side wall of the upright plate (1). A heat shrinkable tape receiving roller (3) is fixedly connected to the outer side wall of the rotating ring (2). A heat shrinkable tape is wound around the outer side wall of the heat shrinkable tape receiving roller (3). The outer side of the heat shrinkable tape is coated with an anti-corrosion coating. A circular opening (10) is provided at the center of the upright plate (1). The bent tube passes through the circular opening (10) and moves in a directional manner. The rotating ring (2) winds the heat shrinkable tape on the heat shrinkable tape receiving roller (3) onto the bent tube by rotating. A fixed frame (5) and a movable frame (6) are provided on both sides of the upright plate (1). A guide roller one (11) is fixedly connected to the top of the fixed frame (5). A guide roller two (12) is fixedly connected to the top of the movable frame (6). The height of the guide roller two (12) exceeds the height of the guide roller one (11). The bent tube is positioned by the two guide rollers one (11) and the two guide rollers two (12).

2. The external corrosion protection device for heat-shrinkable tape of bent pipe according to claim 1, characterized in that: The bottom end of the upright plate (1) is fixedly connected to a base plate, and a servo motor (7) is fixedly connected to the base plate.

3. The external corrosion protection device for heat-shrinkable tape on bent pipes according to claim 2, characterized in that: The surface of the upright plate (1) is provided with a plurality of tensioning wheels (8), which are evenly distributed on the outer periphery of the circular opening (10).

4. The external corrosion protection device for heat-shrinkable tape on a bent pipe according to claim 3, characterized in that: The output end of the servo motor (7) is fixedly connected to one of the tensioning wheels (8), and a tensioning belt (9) is connected between the tensioning wheels (8).

5. The external corrosion protection device for heat-shrinkable tape on a bent pipe according to claim 4, characterized in that: One end of the tensioning wheel (8) passes through the side wall of the vertical plate (1) and is fixedly connected to the drive roller (4). The outer side wall of the drive roller (4) overlaps with the outer side wall of the rotating ring (2).

6. The external corrosion protection device for heat-shrinkable tape on a bent pipe according to claim 1, characterized in that: The fixed frame (5) is provided with a guide rail (15) on its surface, and two guide posts are provided on one side of the movable frame (6). The movable frame (6) is slidably connected to the guide rail (15) through the guide posts.

7. The external corrosion protection device for heat-shrinkable tape on bent pipes according to claim 1, characterized in that: One end of the movable frame (6) is provided with a limit baffle (14), and the other side of the movable frame (6) is fixedly connected with a handle (13).

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