Plastic-lined steel pipe heating and curing device

Abstract

The utility model discloses a plastic-lined steel pipe heating and curing device which comprises a working table, a first limiting plate and a second limiting plate are arranged on the working table, a plurality of electric heating wires are evenly connected to the first limiting plate and the second limiting plate, and a supporting plate and a push plate connected with a second hydraulic rod mechanism are arranged on the working table. The steel pipe can be limited through the first limiting plate and the second limiting plate, the stability of the position of the steel pipe is guaranteed, the temperature of the first limiting plate and the second limiting plate can be increased through the multiple electric heating wires, then the steel pipe is heated through heat transfer, workers do not need to continuously work on one side, the labor amount is reduced, operation is convenient, and safety and reliability are achieved. Time and labor are saved, and working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of plastic-lined steel pipes, and in particular relates to a heating and curing device for plastic-lined steel pipes. Background Technology

[0002] Plastic-lined steel pipes use galvanized seamless steel pipes or welded steel pipes as the base pipe. After removing the weld beads from the inner wall, food-grade polyethylene (PE) pipe with the same inner diameter as the steel pipe is inserted. Finally, it is pressurized and heated for a certain period of time to form the pipe. It is widely used in hot and cold water supply systems in various buildings. In the current manufacturing process, the steel pipe is generally placed on a roller, and then the polyethylene pipe is inserted into the steel pipe. As the steel pipe rotates, workers need to use a flame to evenly and continuously heat the steel pipe from one side. This operation is cumbersome, time-consuming, and labor-intensive. The working environment temperature is high, and workers become quite tired after working for a period of time, reducing production efficiency. Utility Model Content

[0003] To address the above problems, this utility model provides a heating and curing device for plastic-lined steel pipes.

[0004] This utility model is implemented as follows: A heating and curing device for plastic-lined steel pipes includes a workbench. A support block is horizontally fixed at the middle of one side of the upper end of the workbench to support a first limiting plate and ensure the stability of the first limiting plate's position. A fan-shaped annular first limiting plate is horizontally fixed at the upper end of the support block to support the steel pipe. First frame plates are vertically and symmetrically fixed at the upper end of the workbench on both sides of the support block. Multiple first hydraulic rod mechanisms are horizontally and evenly fixed at the upper part of the first frame plate near the support block. The ends of the first hydraulic rod mechanisms are fixedly equipped with fan-shaped annular... The second limiting plate moves horizontally under the action of the first hydraulic rod mechanism. Both the first and second limiting plates are metal plates, corresponding in position and identical in size. They constrain the steel pipe, ensuring its stability. Multiple heating wires are evenly connected to both the first and second limiting plates, uniformly heating them and thus heating the steel pipe through heat transfer.

[0005] A second support plate is vertically fixed at the center of the other side of the upper end of the workbench. The second support plate is perpendicular to the first support plate. A second hydraulic rod mechanism is horizontally fixed at the center of the side of the second support plate closest to the first support plate. A push plate is vertically fixed at the end of the second hydraulic rod mechanism. The push plate reciprocates horizontally under the action of the second hydraulic rod mechanism. A fan-shaped support plate is horizontally arranged below the push plate to support the polyethylene pipe. One end of the support plate is close to the end of the first limiting plate to facilitate the end of the polyethylene pipe to approach the end of the steel pipe. Multiple support rods are vertically and evenly fixed between the support plate and the workbench to ensure the stability of the support plate position. The curvature of the steel pipe inside the first and second limiting plates is the same as the curvature of the support plate. The position of the support plate corresponds to the lower end of the steel pipe. The lowest point of the upper surface of the support plate is at the same level as the lowest point of the inner wall of the steel pipe, ensuring that the position of the polyethylene pipe on the support plate corresponds to that of the steel pipe, ensuring that the polyethylene pipe smoothly enters the steel pipe under the action of the push plate.

[0006] Preferably, a baffle is vertically fixed on the upper part of the workbench on the side away from the second frame plate to block the end of the steel pipe. The baffle is set parallel to the second frame plate, and the distance between the baffle and the second limiting plate is 5cm to 8cm to place the flange at the end of the steel pipe.

[0007] Preferably, the central angles of the first limiting plate and the second limiting plate are both 120°, and the first limiting plate and the second limiting plate form a cylindrical structure that fully covers the steel pipe, thereby increasing the heating area of ​​the steel pipe and improving the heating rate.

[0008] Preferably, the first limiting plate and the second limiting plate are made of zinc-aluminum alloy, which has high strength, good thermal conductivity, and is economical and practical.

[0009] The beneficial effects of this utility model are: it can limit the steel pipe by the first limiting plate and the second limiting plate to ensure the stability of the steel pipe position, and it can increase the temperature of the first limiting plate and the second limiting plate by multiple electric heating wires, thereby heating the steel pipe through heat transfer. It eliminates the need for workers to work continuously on one side, reduces labor intensity, is easy to operate, safe and reliable, saves time and effort, and improves work efficiency. Attached Figure Description

[0010] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0011] Figure 2 This is a schematic diagram showing the positional structure of the first and second limiting plates.

[0012] Figure 3 This is a schematic diagram of the connection structure between the pallet and the polyethylene pipe.

[0013] In the diagram: 1. Workbench; 2. Support block; 3. First limiting plate; 4. First support plate; 5. First hydraulic rod mechanism; 6. Second limiting plate; 7. Electric heating wire; 8. Second support plate; 9. Second hydraulic rod mechanism; 10. Push plate; 11. Support plate; 12. Support rod; 13. Baffle; 14. Steel pipe; 15. Polyethylene pipe. Detailed Implementation

[0014] To better understand the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, further illustrates this utility model.

[0015] like Figure 1-3The device for heating and curing plastic-lined steel pipes shown includes a workbench 1. A support block 2 is horizontally fixed at the middle of one side of the upper end of the workbench 1 to support a first limiting plate 3 and ensure the stability of the position of the first limiting plate 3. A fan-shaped first limiting plate 3 is horizontally fixed at the upper end of the support block 2 to support the steel pipe 14. First frame plates 4 are vertically and symmetrically fixed at the upper ends of the workbench 1 on both sides of the support block 2. Multiple first hydraulic rod mechanisms 5 are horizontally and evenly fixed at the upper part of the first frame plate 4 near the support block 2. A fan-shaped second limiting plate 6 is fixed at the end of the first hydraulic rod mechanism 5. The second limiting plate 6 moves horizontally under the action of the first hydraulic rod mechanism 5. The first limiting plate 3 and the second limiting plate 6 are made of zinc-aluminum alloy, which has high strength, good thermal conductivity, and is economical and practical. The first limiting plate 3 and the second limiting plate 6 are positioned correspondingly and are the same size. The first limiting plate 3 and the second limiting plate 6 limit the steel pipe 14 to ensure the stability of the position of the steel pipe 14. The central angle of the first limiting plate 3 and the second limiting plate 6 is 120°. The first limiting plate 3 and the second limiting plate 6 form a cylindrical structure to fully cover the steel pipe 14, thereby increasing the heating area of ​​the steel pipe 14 and improving the heating rate. Multiple electric heating wires 7 are evenly connected to both the first limiting plate 3 and the second limiting plate 6. These wires heat the first limiting plate 3 and the second limiting plate 6, uniformly increasing their temperature, and thus heating the steel pipe 14 through heat transfer. A second support plate 8 is vertically fixed at the center of the other side of the upper end of the workbench 1. The second support plate 8 is perpendicular to the first support plate 4. A second hydraulic rod mechanism 9 is horizontally fixed at the center of the second support plate 8 near the first support plate 4. A push plate 10 is vertically fixed at the end of the second hydraulic rod mechanism 9. The push plate 10 reciprocates horizontally under the action of the second hydraulic rod mechanism 9. Below the push plate 10, a horizontal... A fan-shaped support plate 11 supports the polyethylene pipe 15. One end of the support plate 11 is close to the end of the first limiting plate 3, which facilitates the end of the polyethylene pipe 15 to approach the end of the steel pipe 14. Multiple support rods 12 are vertically and evenly fixed between the support plate 11 and the workbench 1 to ensure the stability of the position of the support plate 11. The curvature of the steel pipe 14 inside the first limiting plate 3 and the second limiting plate 6 is the same as the curvature of the support plate 11. The position of the lower end of the support plate 11 corresponds to that of the steel pipe 14. The lowest point of the upper surface of the support plate 11 is at the same level as the lowest point of the inner wall of the steel pipe 14, ensuring that the position of the polyethylene pipe 15 on the support plate 11 corresponds to that of the steel pipe 14, and ensuring that the polyethylene pipe 15 smoothly enters the steel pipe 14 under the action of the push plate 10.

[0016] A baffle 13 is vertically fixed on the upper end of the workbench 1 on the side away from the second frame plate 8 to block the end of the steel pipe 14. The baffle 13 is set parallel to the second frame plate 8, and the distance between the baffle 13 and the second limiting plate 6 is 6.5cm, so as to place the flange at the end of the steel pipe 14.

[0017] The second limiting plate 6 moves to both sides under the action of the first hydraulic rod mechanism 5, placing the steel pipe 14 stably on the first limiting plate 3, so that one end of the steel pipe 14 abuts against the baffle 13. The second limiting plate 6 moves towards the steel pipe 14 under the action of the first hydraulic rod mechanism 5 until it is tightly abutting against the steel pipe 14, placing the polyethylene pipe 15 stably on the support plate 11. The push plate 10 pushes the polyethylene pipe 15 smoothly into the steel pipe 14 under the action of the second hydraulic rod mechanism 9. The electric heating wire 7 is activated to heat the first limiting plate 3 and the second limiting plate 6, thereby heating the steel pipe 14 through heat transfer, so that the polyethylene pipe 15 is tightly and reliably bonded to the inner wall of the steel pipe 14.

[0018] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A plastic-lined steel pipe heating and curing apparatus comprising a work table, characterized in that, The middle position of the upper end of the workbench is horizontally fixedly provided with a support block, the upper end of the support block is horizontally fixedly provided with a first limiting plate in the shape of a sector, the upper end of the workbench on both sides of the support block is vertically and symmetrically fixedly provided with a first frame plate, a plurality of first hydraulic rod mechanisms are uniformly fixedly arranged on the upper part of the first frame plate on the side close to the support block, the end of the first hydraulic rod mechanism is fixedly provided with a second limiting plate in the shape of a sector, the first limiting plate and the second limiting plate are metal plates, the first limiting plate and the second limiting plate are in corresponding positions and have the same size, a plurality of electric heating wires are uniformly connected to the first limiting plate and the second limiting plate, The middle position of the upper end of the workbench on the other side is vertically fixedly provided with a second frame plate, the second frame plate is vertically arranged with the first frame plate, the second hydraulic rod mechanism is fixedly arranged on the middle position of the side close to the first frame plate of the second frame plate, the end of the second hydraulic rod mechanism is vertically fixedly provided with a push plate, the push plate is horizontally arranged below the push plate, one end of the push plate is close to the end of the first limiting plate, a plurality of supporting rods are vertically and uniformly fixedly arranged between the push plate and the workbench, the curvature of the steel pipe in the first limiting plate and the second limiting plate is the same as the curvature of the push plate, the position of the push plate and the lower end of the steel pipe is corresponding, the lowest part of the upper end surface of the push plate and the lowest part of the inner wall of the steel pipe are in the same horizontal plane.

2. A plastic-lined steel pipe heating and curing apparatus according to claim 1, wherein The upper end of the workbench on the side away from the second frame plate is vertically fixedly provided with a baffle, the baffle is arranged in parallel with the second frame plate, the distance between the baffle and the second limiting plate is 5cm-8cm.

3. A plastic-lined steel pipe heating and curing apparatus according to claim 1, wherein The central angle of the first limiting plate and the second limiting plate is 120°.

4. A plastic-lined steel pipe heating and curing apparatus according to claim 1, wherein The material of the first limiting plate and the second limiting plate is zinc-aluminum alloy.

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