Steel lining polytetrafluoroethylene mould pressing pipeline

Abstract

The utility model discloses a steel lining Teflon mould pressing pipeline, which belongs to the technical field of pipelines, and comprises a steel pipe, a Teflon pipe positioned in the steel pipe and flanges fixed at the end parts of the steel pipe, the two ends of the steel pipe are sleeved with protective covers, the inner diameter of the outer end parts of the protective covers is larger than the outer diameter of the flanges, and the two ends of the steel pipe are provided with internal thread pipes in a threaded manner; a limiting groove is formed in the outer side of the inner threaded pipe in the circumferential direction, and the inner end of the protective cover is located in the limiting groove. The protective cover is arranged at the end of the steel pipe, movement of the protective cover is controlled through the inner threaded pipe, the end face of the protective cover protrudes out of the end of the polytetrafluoroethylene pipe, and end protection can be carried out in the polytetrafluoroethylene pipe transporting and carrying process; and bolts and nuts at the joints can be protected through the protective covers, so that later maintenance and disassembly are facilitated, and the practicability is higher.

Description

Technical Field

[0001] The utility model relates to a steel-lined tetrafluoroethylene pipe, in particular to a steel-lined tetrafluoroethylene molded pipe, belonging to the technical field of pipes. Background Technique

[0002] In the prior art, a steel-lined tetrafluoroethylene molded pipe is disclosed in the utility model with the application number 202222016281.2. In order to solve the problem that when the steel-lined tetrafluoroethylene pipe is subjected to strong external collision or internal liquid pressure impact, it is difficult for the steel-lined tetrafluoroethylene pipe to effectively compensate for the external collision pressure and the internal liquid impact pressure, resulting in damage and leakage of the steel-lined tetrafluoroethylene pipe. Through the mutual cooperation among the buffer groove, the fixed pipe, the first spring, the fixed rod, the second spring and the limiting plate, when the molded tetrafluoroethylene pipe and the steel pipe are subjected to strong external or excessive internal liquid impact pressure, under the double buffering of the first spring and the second spring in cooperation with the steel pipe and the molded tetrafluoroethylene pipe, the collision pressure generated outside or inside the steel-lined tetrafluoroethylene molded pipe can be effectively compensated, thereby avoiding damage and leakage problems between the molded tetrafluoroethylene pipe and the steel pipe.

[0003] There are still deficiencies in the similar applications as above:

[0004] The end of the tetrafluoroethylene pipe protrudes outside the steel pipe. During transportation or handling, it is easy to cause wear on the end face of the tetrafluoroethylene pipe, affecting the use effect. In addition, although protection is provided on the circumferential surface of the steel pipe, there are gaps between the protection components, and the protection is not comprehensive;

[0005] Therefore, a steel-lined tetrafluoroethylene molded pipe is designed to optimize the above problems. Content of the Utility Model

[0006] The main purpose of the utility model is to provide a steel-lined tetrafluoroethylene molded pipe. By providing a protective cover at the end of the steel pipe and controlling the movement of the protective cover through an internally threaded pipe, the end face of the protective cover protrudes beyond the end of the tetrafluoroethylene pipe, which can protect the end during the transportation and handling of the tetrafluoroethylene pipe. In addition, after two groups of tetrafluoroethylene pipes are connected, the bolts and nuts at the connection can be protected by the protective cover for later maintenance and disassembly, with higher practicability. By providing a protective component composed of two groups of rubber rings, grooves, rollers and metal rings at both ends of the steel pipe, and the protective component surrounds the outer circumferential surface of the steel pipe, the protection is more comprehensive.

[0007] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0008] A steel-lined PTFE molded pipe, comprising a steel pipe, a PTFE pipe located inside the steel pipe, and a flange fixed to the end of the steel pipe. Protective covers are sleeved at both ends of the steel pipe. The inner diameter of the outer end of the protective cover is larger than the outer diameter of the flange. Inner threaded pipes are installed at both ends of the steel pipe by threading. A limiting groove is circumferentially formed on the outer side of the inner threaded pipe. The inner end of the protective cover is located inside the limiting groove, and the protective cover is rotatably connected to the inner threaded pipe. External threads matching the inner threaded pipes are provided at both ends of the steel pipe, and protective components are provided at both ends of the steel pipe.

[0009] Preferably: Anti-slip lines are evenly provided on the outer sides of the inner threaded pipes, and insertion holes are formed on the outer sides of the inner threaded pipes.

[0010] Preferably: An inner clamping groove is formed on the inner side of the protective cover at one end of the steel pipe, and an outer clamping groove is formed on the outer side of the protective cover at the other end of the steel pipe. The inner clamping groove and the outer clamping groove on the two protective covers are engaged with each other.

[0011] Preferably: Sealing rings are provided on the inner end faces of the inner clamping grooves and the outer end faces of the outer clamping grooves, and the outer sides of the sealing rings are flat surfaces.

[0012] Preferably: The protective component is a rubber ring. The rubber ring is fixed on the circumferential surface of the steel pipe, and the length of the rubber ring is 5-10 cm, and the thickness of the rubber ring is 3-5 cm.

[0013] Preferably: Grooves are formed on the outer sides of the rubber rings, and rollers are evenly and rotatably installed between the two sides of the grooves.

[0014] Preferably: A metal ring is sleeved on the outer side of the rubber ring. The inner side of the metal ring is attached to the outer side of the roller, and the inner side of the metal ring is stuck inside the groove.

[0015] The beneficial effects of the present utility model are as follows:

[0016] For the steel-lined PTFE molded pipe provided by the present utility model, by providing protective covers at the ends of the steel pipe and controlling the movement of the protective covers through the inner threaded pipes, the end faces of the protective covers protrude beyond the ends of the PTFE pipes, which can protect the ends during the transportation and handling of the PTFE pipes. In addition, after the two PTFE pipes are connected, the bolts and nuts at the connection can be protected by the protective covers for later maintenance and disassembly, with higher practicability;

[0017] By providing a protective component composed of two rubber rings, grooves, rollers, and metal rings at both ends of the steel pipe, and the protective component surrounds the outer circumferential surface of the steel pipe, the protection is more comprehensive. Description of the Drawings

[0018] Figure 1 is the front view of the present utility model;

[0019] Figure 2 is the front view sectional view of the present utility model;

[0020] Figure 3 For the utility model Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a pipeline connection state diagram of the utility model.

[0022] In the figure: 1. Steel pipe; 2. PTFE pipe; 3. Flange; 4. Protective cover; 5. Internally threaded pipe; 6. Limiting groove; 7. External thread; 8. Protective component; 9. Internal slot; 10. External slot; 11. Rubber ring; 12. Groove; 13. Roller; 14. Metal ring. DETAILED DESCRIPTION

[0023] In order to make the technical solution of the utility model more clear and specific to those skilled in the art, the utility model is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the utility model are not limited thereto.

[0024] like Figures 1-4 As shown, this embodiment provides a steel-lined polytetrafluoroethylene molded pipe, including a steel pipe 1, a polytetrafluoroethylene tube 2 located inside the steel pipe 1, and a flange 3 fixed at the end of the steel pipe 1, both ends of the steel pipe 1 are provided with a shield 4, the inner diameter of the outer end of the shield 4 is larger than the outer diameter of the flange 3, both ends of the steel pipe 1 are threadedly installed with an internal threaded pipe 5, the outer side of the internal threaded pipe 5 is provided with a limiting groove 6 along the circumferential direction, the inner end of the shield 4 is located inside the limiting groove 6, and the shield 4 is rotatably connected to the internal threaded pipe 5, both ends of the steel pipe 1 are provided with an external thread 7 that matches the internal threaded pipe 5, and both ends of the steel pipe 1 are provided with a protective component 8.

[0025] General working principle: When transporting or carrying the pipeline, since the end of the polyfluoro tube 2 protrudes from the front end of the steel pipe 1, in order to avoid wear on the end of the polyfluoro tube 2, the internal threaded tube 5 can be controlled to rotate toward the end of the steel pipe 1. When the internal threaded tube 5 moves, the protective cover 4 will be driven to move, and the end face of the protective cover 4 will protrude from the end of the polyfluoro tube 2, which can form effective external protection for the end of the polyfluoro tube 2. In addition, after the flange 3 at the end of the steel pipe 1 is connected, the connection can be protected by the protective cover 4.

[0026] In this embodiment, the outer side of the internally threaded tube 5 is uniformly provided with anti-slip grooves, and the outer side of the internally threaded tube 5 is provided with an insertion hole.

[0027] Partial working principle: the anti-slip grooves on the outside of the internal threaded tube 5 can facilitate the manual rotation of the internal threaded tube 5, and the setting of the socket can be used with the help of an auxiliary tool inserted into the inside of the socket to bend the internal threaded tube 5, which is easy to operate.

[0028] In this embodiment, an inner card slot 9 is provided on the inner side of the protective cover 4 at one end of the steel pipe 1, and an outer card slot 10 is provided on the outer side of the protective cover 4 at the other end of the steel pipe 1. The inner card slots 9 and the outer card slots 10 on the two protective covers 4 are engaged with each other.

[0029] Local working principle: After the two protective covers 4 are engaged with each other, the outer card slot 10 is stuck outside the inner card slot 9, increasing the contact area between the two protective covers 4 and improving the protection effect.

[0030] In this embodiment, sealing rings are provided on the inner end surface of the inner card slot 9 and the outer end surface of the outer card slot 10, and the outer side surfaces of the sealing rings are all flat.

[0031] Local working principle: After the two protective covers 4 are engaged with each other, the sealing rings will be squeezed, improving the sealing performance during use.

[0032] In this embodiment, the protective component 8 is a rubber ring 11. The rubber ring 11 is fixed on the circumferential surface of the steel pipe 1, and the length of the rubber ring 11 is 5 - 10 cm, and the thickness of the rubber ring 11 is 3 - 5 cm.

[0033] Local working principle: Through the setting of the rubber ring 11, it can deform when subjected to an external impact force, effectively buffering and protecting, and the protection of the rubber ring 11 is more comprehensive.

[0034] In this embodiment, a groove 12 is provided on the outer side of the rubber ring 11, and a roller 13 is evenly and rotatably installed between the two sides of the groove 12.

[0035] Local working principle: When an impact object hits, it will contact the roller 13. The rotation of the roller 13 will guide the impact object to the outside to unload the force.

[0036] In this embodiment, a metal ring 14 is sleeved on the outer side of the rubber ring 11. The inner side of the metal ring 14 is attached to the outer side of the roller 13, and the inner side of the metal ring 14 is stuck inside the groove 12.

[0037] Local working principle: The setting of the metal ring 14 can rotate outside the steel pipe 1 and has a smooth surface, improving the force unloading effect when being hit.

[0038] The above is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the scope disclosed by the present utility model, according to the technical solution and its concept of the present utility model, makes equivalent substitutions or changes, all belong to the protection scope of the present utility model.

Claims

1. A steel-lined PTFE molded pipe, comprising a steel pipe (1), a PTFE pipe (2) located inside the steel pipe (1), and a flange (3) fixed to the end of the steel pipe (1), characterized in that: Both ends of the steel pipe (1) are sleeved with protective covers (4). The inner diameter of the outer end of the protective cover (4) is larger than the outer diameter of the flange (3). Both ends of the steel pipe (1) are threadedly installed with internal threaded pipes (5). A limiting groove (6) is circumferentially formed on the outer side of the internal threaded pipe (5). The inner end of the protective cover (4) is located inside the limiting groove (6), and the protective cover (4) is rotatably connected to the internal threaded pipe (5). External threads (7) matching the internal threaded pipes (5) are formed at both ends of the steel pipe (1). Protective components (8) are provided at both ends of the steel pipe (1).

2. The steel-lined PTFE molded pipe according to claim 1, wherein: Anti-slip patterns are evenly provided on the outer sides of the internal threaded pipes (5), and insertion holes are formed on the outer sides of the internal threaded pipes (5).

3. A steel-lined tetrafluoroethylene molded pipe according to claim 1, characterized in that: An internal clamping groove (9) is formed on the inner side of the protective cover (4) at one end of the steel pipe (1), and an external clamping groove (10) is formed on the outer side of the protective cover (4) at the other end of the steel pipe (1). The internal clamping grooves (9) and the external clamping grooves (10) on the two protective covers (4) are clamped with each other.

4. A steel-lined tetrafluoroethylene molded pipe according to claim 3, characterized in that: Sealing rings are provided on the inner end faces of the internal clamping grooves (9) and the outer end faces of the external clamping grooves (10), and the outer sides of the sealing rings are flat surfaces.

5. A steel-lined PTFE molded pipe according to any one of claims 1-4, characterized in that: The protective component (8) is a rubber ring (11). The rubber ring (11) is fixed on the circumferential surface of the steel pipe (1). The length of the rubber ring (11) is 5 - 10 cm, and the thickness of the rubber ring (11) is 3 - 5 cm.

6. The steel-lined PTFE molded pipe according to claim 5, wherein: A groove (12) is formed on the outer side of the rubber ring (11), and rollers (13) are evenly and rotatably installed between both sides of the groove (12).

7. A steel-lined PTFE molded pipe according to claim 6, characterized in that: A metal ring (14) is sleeved on the outer side of the rubber ring (11). The inner side of the metal ring (14) is attached to the outer side of the roller (13), and the inner side of the metal ring (14) is stuck inside the groove (12).

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