Concave-convex embedded plastic-lined composite steel pipe

Abstract

The utility model discloses a concave-convex embedded plastic-lined composite steel pipe, which relates to the technical field of composite steel pipes and comprises a steel pipe body. The connecting mechanism is arranged on the steel pipe body and comprises a plurality of plastic-lined clamping grooves and a plurality of plastic-lined clamping strips, the plastic-lined clamping grooves are formed in the inner wall of the steel pipe body at equal intervals, and each plastic-lined clamping strip is arranged in the corresponding plastic-lined clamping groove in a clamped mode; the butt joint mechanism is arranged on the steel pipe body and used for butt joint between pipes, the butt joint mechanism comprises a butt joint concave head and a butt joint convex head, and the butt joint concave head is fixedly connected to one end of the steel pipe body. According to the concave-convex embedded plastic-lined composite steel pipe, through the use of the connecting mechanism, the plastic lining can flow into the plastic lining clamping grooves in a molten state, and the plastic lining clamping strips are formed after cooling, so that the inner plastic lining layer is stably and tightly combined with the steel pipe body, a gap between the inner plastic lining layer and the steel pipe body in the use process is avoided, the use effect is guaranteed, and the service life of the steel pipe is prolonged. The structure is simple and use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of composite steel pipe technology, specifically a concave-convex interlocking plastic-lined composite steel pipe. Background Technology

[0002] Plastic-lined composite steel pipe is a composite pipe that combines carbon steel pipe and plastic-lined pipe into one through thermal expansion or cold drawing and diameter reduction processes. It has the characteristics of both the outer carbon steel pipe and the inner plastic-lined pipe, which greatly improves the performance of the pipe.

[0003] The authorized publication number "CN220770379U" describes "a plastic-lined composite steel pipe, comprising a steel pipe and a plastic-lined pipe, wherein the steel pipe is sleeved on the outside of the plastic-lined pipe, the outlet end of the plastic-lined pipe extends to the outside of the steel pipe and is fixedly connected to a sealing gasket, a passive sleeve is fixedly connected to the side of the sealing gasket away from the plastic-lined pipe, and an active tension sleeve located at the top of the passive sleeve is fixedly connected to the side of the sealing gasket away from the plastic-lined pipe, the ends of the passive sleeve and the active tension sleeve away from the plastic-lined pipe are connected to each other, and a sealing groove is formed on the inner wall of the inlet of the plastic-lined pipe. This utility model, through the sealing gasket, can tightly connect the two steel pipes with the cooperation of the connecting sleeve, and at the same time can prevent the outlet end of the plastic-lined pipe from falling off the inner wall of the steel pipe; while with the cooperation of the passive sleeve and the guide groove, and the active tension sleeve and the sealing groove, an outward expansion force can be applied to the other end of the plastic-lined pipe, thereby reducing the possibility of the inlet end of the plastic-lined pipe falling off the inner wall of the steel pipe."

[0004] The aforementioned patent allows for a tight connection between two steel pipes via a sealing gasket and a connecting sleeve, preventing the outlet end of the plastic-lined pipe from detaching from the inner wall of the steel pipe. Furthermore, the combination of a passive sleeve and guide groove, along with an active tension sleeve and sealing groove, applies an outward expansion force to the other end of the plastic-lined pipe, reducing the likelihood of the inlet end detaching from the inner wall of the steel pipe. However, during use, the connection between the internal plastic lining and the steel pipe body is achieved solely through heating, which cannot guarantee stability during operation. Utility Model Content

[0005] This utility model provides a concave-convex interlocking plastic-lined composite steel pipe. Through the use of the connecting mechanism, the plastic lining can flow into the plastic lining slot in a molten state. After cooling, it forms a plastic lining strip, which makes the inner plastic lining layer stably and tightly bonded to the steel pipe body, avoiding gaps between the two during use, ensuring the performance. In addition, the structure is simple and easy to use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a concave-convex interlocking plastic-lined composite steel pipe, comprising:

[0007] Steel pipe body;

[0008] A connecting mechanism, disposed on the steel pipe body, includes multiple plastic-lined slots and multiple plastic-lined strips. The multiple plastic-lined slots are equidistantly spaced on the inner wall of the steel pipe body, and each plastic-lined strip is engaged within each plastic-lined slot; and

[0009] The docking mechanism is located on the steel pipe body and is used for docking between pipes.

[0010] Furthermore, the docking mechanism includes a docking concave head and a docking convex head, wherein the docking concave head is fixedly connected to one end of the steel pipe body, and the docking convex head is fixedly connected to the other end of the steel pipe body.

[0011] Furthermore, it also includes a protective mechanism, installed on the steel pipe body, for the use of the pipe material. The protective mechanism includes:

[0012] The inner lining component is located within the steel pipe body; and

[0013] The outer protective component is located on the outer surface of the steel pipe body.

[0014] Furthermore, the inner lining component is an inner plastic lining layer, which is fixedly connected to the steel pipe body, and multiple plastic lining clips are fixedly connected to the outer surface of the inner plastic lining layer.

[0015] Furthermore, the outer protective component is a galvanized layer, the inner wall of which is wrapped around the outer surface of the steel pipe body, and both ends of the galvanized layer are fixedly connected to the mating protrusion and the mating concave head, respectively.

[0016] This utility model provides a concave-convex interlocking plastic-lined composite steel pipe. It has the following beneficial effects:

[0017] (1) The concave-convex interlocking plastic-lined composite steel pipe, through the use of the connecting mechanism, allows the plastic lining to flow into the plastic lining slot in the molten state. After cooling, it forms a plastic lining strip, which makes the inner plastic lining layer stably and tightly bonded to the steel pipe body, avoiding gaps between the two during use, ensuring the effect of use. In addition, the structure is simple and easy to use. Attached Figure Description

[0018] Figure 1 This is an exploded cross-sectional view of the present invention;

[0019] Figure 2 This is a partial sectional view of the present invention;

[0020] Figure 3 This is a first-view perspective perspective view of the present invention;

[0021] Figure 4 This is a second-view perspective perspective view of the present invention.

[0022] In the diagram: 1. Steel pipe body; 2. Plastic-lined slot; 3. Inner plastic lining layer; 4. Plastic-lined strip; 5. Galvanized layer; 6. Butt joint protrusion; 7. Butt joint concave head. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] Please see Figure 1-4 This utility model provides a technical solution: a concave-convex interlocking plastic-lined composite steel pipe, comprising:

[0025] Steel pipe body 1;

[0026] A connecting mechanism, located on the steel pipe body 1, includes multiple plastic-lined slots 2 and multiple plastic-lined strips 4. The multiple plastic-lined slots 2 are equidistantly spaced on the inner wall of the steel pipe body 1, and each plastic-lined strip 4 is engaged within each plastic-lined slot 2.

[0027] The docking mechanism is located on the steel pipe body 1 and is used for docking between pipes.

[0028] In this implementation plan: the steel pipe body 1 can withstand greater external pressure and impact, and multiple plastic-lined slots 2 and multiple plastic-lined strips 4 make the whole tightly connected, ensuring that there are no gaps between them and guaranteeing the performance.

[0029] Specifically, the docking mechanism includes a docking concave head 7 and a docking convex head 6. The docking concave head 7 is fixedly connected to one end of the steel pipe body 1, and the docking convex head 6 is fixedly connected to the other end of the steel pipe body 1.

[0030] In this embodiment, the mating concave head 7 and the mating convex head 6 facilitate the connection between two independent pipes, ensuring the effectiveness of use.

[0031] Specifically, it also includes a protective mechanism, installed on the steel pipe body 1, for the use of the pipe. The protective mechanism includes:

[0032] The inner lining component is located inside the steel pipe body 1; and

[0033] The outer protective component is located on the outer surface of the steel pipe body 1.

[0034] In this embodiment, the inner lining component and the outer protective component work together to form an integral structure.

[0035] Specifically, the inner lining component is an inner plastic layer 3, which is fixedly connected inside the steel pipe body 1, and multiple plastic-lined clips 4 are fixedly connected to the outer surface of the inner plastic layer 3.

[0036] In this embodiment: the inner lining plastic layer 3 is made of polyethylene (PE) or polypropylene (PPR), with a smooth inner wall, corrosion resistance, no scaling, and good hygiene performance.

[0037] Specifically, the outer protective component is a galvanized layer 5, the inner wall of which is wrapped around the outer surface of the steel pipe body 1, and the two ends of the galvanized layer 5 are respectively fixedly connected to the mating protrusion 6 and the mating concave head 7.

[0038] In this embodiment: the zinc plating layer 5 provides high strength and rigidity, and can withstand greater external pressure and impact.

[0039] During use, the protruding head 6 enters the concave head 7 to connect the two independent pipes, ensuring the effectiveness of use. During use, the inner wall of the plastic lining layer 3 is smooth, corrosion-resistant, does not scale, and has good hygiene performance. Multiple plastic lining slots 2 and multiple plastic lining strips 4 ensure that the inner plastic lining layer 3 is tightly bonded to the steel pipe body 1, ensuring that there are no gaps between the two, thus completing the use.

[0040] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A type of interlocking plastic-lined composite steel pipe, characterized in that, include: Steel pipe body (1); A connecting mechanism is provided on the steel pipe body (1). The connecting mechanism includes multiple plastic-lined slots (2) and multiple plastic-lined strips (4). The multiple plastic-lined slots (2) are equidistantly opened on the inner wall of the steel pipe body (1), and each plastic-lined strip (4) is snapped into each plastic-lined slot (2). The docking mechanism is located on the steel pipe body (1) and is used for docking between pipes.

2. The concavo-convex fitting plastic-lined composite steel pipe according to claim 1, characterized by The docking mechanism includes a docking concave head (7) and a docking convex head (6). The docking concave head (7) is fixedly connected to one end of the steel pipe body (1), and the docking convex head (6) is fixedly connected to the other end of the steel pipe body (1).

3. The concavo-convex fitting plastic-lined composite steel pipe according to claim 2, characterized by It also includes a protective mechanism, which is installed on the steel pipe body (1) for the use of the pipe. The protective mechanism includes: The inner lining component is located inside the steel pipe body (1); and The outer protective component is located on the outer surface of the steel pipe body (1).

4. The concavo-convex fitting plastic-lined composite steel pipe according to claim 3, characterized by The inner lining component is an inner plastic layer (3), which is fixedly connected to the steel pipe body (1), and multiple plastic lining clips (4) are fixedly connected to the outer surface of the inner plastic layer (3).

5. The convex-concave fitting plastic-lined composite steel pipe according to claim 4, characterized in that, The outer protective component is a galvanized layer (5). The inner wall of the galvanized layer (5) is wrapped around the outer surface of the steel pipe body (1), and the two ends of the galvanized layer (5) are respectively fixedly connected to the mating protrusion (6) and the mating concave head (7).

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