Damage-free plastic pipeline sealing connection device

Abstract

The utility model discloses a non-damage plastic pipeline sealing connection device which comprises a first pipeline and a second pipeline, and a first flange and a second flange are arranged at the ends, close to each other, of the first pipeline and the second pipeline respectively. According to the utility model, one end of the first pipeline and one end of the second pipeline are respectively fixed between the outer supporting ring and the inner supporting ring which are respectively arranged at one end of the first flange and one end of the second flange, and are sealed and fixed through the sealing ring; the outer supporting ring can be gradually extruded, so that the outer supporting ring and the inner supporting ring are firmly attached to the pipeline, the contact area with the plastic pipeline is increased, the first flange and the second flange are connected with the plastic pipeline more tightly, and the leakage problem is avoided; and finally, the first flange and the second flange are connected through the flange connecting bolt, so that non-damage sealing connection of the plastic pipeline can be completed, the structure is simple, and operation is convenient and labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic pipelines, in particular to a non-damaging plastic pipeline sealing connection device. Background Technique

[0002] Among non-metallic pipelines, plastic pipes are the most widely used. There are many types of plastic pipes, which are divided into two major categories: thermoplastic plastic pipes and thermosetting plastic pipes. Those belonging to thermoplastics include polyvinyl chloride pipes, polyethylene pipes, polypropylene pipes, polyoxymethylene pipes, etc.; those belonging to thermosetting include phenolic plastic pipes, etc. The main advantages of plastic pipes are good corrosion resistance, light weight, convenient molding, easy processing, and the disadvantages are low strength and poor heat resistance.

[0003] The existing technologies have the following problems:

[0004] After a large number of searches, it is found that the Chinese patent publication number: CN211259990U discloses a plastic pipeline connection device, including a first pipeline, a second pipeline and a sealing mechanism. A first connection head is sleeved on one side of the first pipeline close to the second pipeline, and a second connection head is sleeved on one side of the second pipeline close to the first pipeline. Sealing pipes communicating with each other are installed on opposite sides of the first connection head and the second connection head. The number of the sealing mechanisms is two and they are symmetrically arranged on the upper and lower sides of the sealing pipes. Through the mutual cooperation of the positioning plate, positioning shell, threaded rod, handle, sealing plate, rolling bearing, annular plate, anti-corrosion layer, buffer layer, compression-resistant layer and anti-cracking layer, the stability of the connection between the two pipelines is greatly improved, the strength of the annular plate is improved, the phenomenon of fracture and leakage is avoided, and at the same time the annular plate has a certain elasticity, avoiding damage to the connection device caused by thermal expansion and contraction, and improving the service life of the connection device, bringing great convenience to users.

[0005] However, the above patent still has problems in actual use. More obviously, when connecting plastic pipelines, the contact area between the first connection head and the second connection and the plastic pipeline is small, which affects the stability of the connection between the first connection head and the second connection and the plastic pipeline, and there is a risk that the first connection head and the second connection are easily separated from the plastic pipeline.

[0006] Therefore, we propose a non-damaging plastic pipeline sealing connection device to solve the above drawbacks. Content of the Utility Model

[0007] The purpose of the utility model is to provide a non-damaging plastic pipeline sealing connection device to solve the deficiencies existing in the prior art.

[0008] To achieve the above object, the utility model adopts the following technical solutions: A non-destructive plastic pipe sealing connection device, including a first pipe and a second pipe. One end of the first pipe and the second pipe close to each other are respectively provided with a first flange and a second flange. On the surfaces of the first flange and the second flange away from each other, an outer support ring and an inner support ring are provided. A fitting groove is provided between the outer support ring and the inner support ring. One end of the first pipe and the second pipe close to each other fits with the fitting groove. Sealing rings are installed on the outer wall of the inner support ring and the inner wall of the outer support ring, and the sealing rings are used in cooperation with the first pipe and the second pipe. The outer wall of the outer support ring is a slope. A fixing collar is threadedly connected to the outside of the outer support ring, and anti-slip strips are integrally arranged on the outer wall of the fixing collar. The first flange and the second flange are connected by flange connection bolts.

[0009] Preferably, a plurality of sealing rings are provided, and the plurality of sealing rings are equidistantly distributed on the outer wall of the inner support ring and the inner wall of the outer support ring.

[0010] Preferably, the thickness of one end of the outer support ring close to the first flange is greater than that of the other end.

[0011] Preferably, a channel is provided on the surface of the inner support ring, and the diameter of the channel is smaller than the diameter of the inner support ring.

[0012] Preferably, the diameter of the inner support ring is smaller than the diameter of the outer support ring, and the diameter of the outer support ring is smaller than the diameter of the fixing collar.

[0013] Preferably, a plurality of anti-slip strips are provided, and the plurality of anti-slip strips are annularly arrayed on the outer wall of the fixing collar.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. In the utility model, by setting the first flange and the second flange, an outer support ring and an inner support ring are integrally arranged at one end of each of the first flange and the second flange. By fixing one end of the first pipe and the second pipe between the outer support ring and the inner support ring respectively arranged at one end of the first flange and the second flange, and sealing and fixing them through the sealing ring. Since the outer wall of the outer support ring is a slope, when the fixing collar is threadedly connected to the outer support ring, the outer support ring can be gradually extruded, so that the outer support ring and the inner support ring are firmly attached to the pipe, increasing the contact area with the plastic pipe, making the connection between the first flange and the second flange and the plastic pipe tighter, avoiding the problem of leakage. Finally, the first flange and the second flange are connected by flange connection bolts to complete the non-destructive sealing connection of the plastic pipe, and the structure is simple, and the operation is convenient and labor-saving.

[0016] 2. In the present utility model, by providing anti-slip strips, when rotating the fixed collar, the frictional force between the hands of the staff and the fixed collar can be effectively increased, avoiding the phenomenon of hand slipping, which is beneficial for operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a cross-sectional view of a non-damaging plastic pipe sealing connection device proposed by the present utility model;

[0019] Figure 2 It is a schematic external structure diagram of a non-damaging plastic pipe sealing connection device proposed by the present utility model;

[0020] Figure 3 It is a three-dimensional view of the first flange, outer support ring, inner support ring, sealing ring, channel and fixed collar.

[0021] Legend Explanation:

[0022] 100. First pipe; 200. Second pipe; 300. First flange; 400. Second flange; 500. Outer support ring; 600. Inner support ring; 700. Sealing ring; 800. Channel; 900. Fixed collar; 910. Anti-slip strip; 1000. Flange connection bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0024] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance; in addition, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] Please refer to Figures 1 - 3, A non-destructive plastic pipe sealing connection device, including a first pipe 100 and a second pipe 200. One end of the first pipe 100 and the second pipe 200 close to each other are respectively provided with a first flange 300 and a second flange 400. On the surface of the side of the first flange 300 and the second flange 400 away from each other, an outer support ring 500 and an inner support ring 600 are provided. A fitting groove is arranged between the outer support ring 500 and the inner support ring 600. One end of the first pipe 100 and the second pipe 200 close to each other fits into the fitting groove. Sealing rings 700 are installed on the outer wall of the inner support ring 600 and the inner wall of the outer support ring 500, and the sealing rings 700 are used in cooperation with the first pipe 100 and the second pipe 200. The outer wall of the outer support ring 500 is an inclined surface. A fixing collar 900 is threadedly connected to the outside of the outer support ring 500, and anti-slip strips 910 are integrally arranged on the outer wall of the fixing collar 900. The first flange 300 and the second flange 400 are connected by flange connection bolts 1000. One end of the first flange 300 and the second flange 400 are integrally provided with an outer support ring 500 and an inner support ring 600. By fixing one end of the first pipe 100 and the second pipe 200 respectively in the fitting groove between the outer support ring 500 and the inner support ring 600 respectively arranged at one end of the first flange 300 and the second flange 400, and sealing and fixing through the sealing ring 700. Since the outer wall of the outer support ring 500 is an inclined surface, when the fixing collar 900 is threadedly connected to the outer support ring 500, the outer support ring 500 can be gradually extruded, so that the outer support ring 500 and the inner support ring 600 are firmly attached to the pipe, increasing the contact area with the plastic pipe, making the connection between the first flange 300 and the second flange 400 and the plastic pipe more tight, avoiding the problem of leakage. Finally, the first flange 300 and the second flange 400 are connected by the flange connection bolts 1000 to complete the non-destructive sealing connection of the plastic pipe. And the structure is simple, the operation is convenient and labor-saving. Secondly, the anti-slip strips 910 can effectively increase the friction between the staff's hand and the fixing collar 900 when rotating the fixing collar 900, avoiding the phenomenon of hand slipping, which is beneficial to the operation.

[0026] In this implementation: There are multiple sealing rings 700, and the multiple sealing rings 700 are equidistantly distributed on the outer wall of the inner support ring 600 and the inner wall of the outer support ring 500.

[0027] Specifically, it improves the sealing performance between plastic pipes and makes the connection tighter.

[0028] In this implementation: The thickness of one end of the outer support ring 500 close to the first flange 300 is greater than that of the other end.

[0029] Specifically, it enables the fixing collar 900 to gradually exert a force on the outer support ring 500, so that the outer support ring 500 and the inner support ring 600 can be tightly attached to the plastic pipe.

[0030] In this embodiment: A channel 800 is provided on the surface of the inner support ring 600, and the diameter of the channel 800 is smaller than the diameter of the inner support ring 600.

[0031] Specifically, it is convenient for water flow, materials, etc. to pass through smoothly, and the connected plastic pipe can be used normally.

[0032] In this embodiment: The diameter of the inner support ring 600 is smaller than the diameter of the outer support ring 500, and the diameter of the outer support ring 500 is smaller than the diameter of the fixed collar 900.

[0033] Specifically, one end of the plastic pipe can fit into the fitting groove between the inner support ring 600 and the outer support ring 500, making the connection tighter.

[0034] In this embodiment: There are multiple anti-slip strips 910, and the multiple anti-slip strips 910 are annularly and arrayedly distributed on the outer wall of the fixed collar 900.

[0035] Specifically, it increases the friction force and is convenient for exerting force during rotation.

[0036] Working principle: During use, outer support rings 500 and inner support rings 600 are integrally provided at one end of the first flange 300 and the second flange 400 respectively. By fixing one end of the first pipe 100 and the second pipe 200 in the fitting grooves between the outer support ring 500 and the inner support ring 600 provided at one end of the first flange 300 and the second flange 400 respectively, and sealing and fixing with the sealing ring 700. Since the outer wall of the outer support ring 500 is a slope, when the fixed collar 900 is threadedly connected to the outer support ring 500, the outer support ring 500 can be gradually extruded, so that the outer support ring 500 and the inner support ring 600 are firmly attached to the pipe, increasing the contact area with the plastic pipe. The connection between the first flange 300 and the second flange 400 and the plastic pipe is tighter, avoiding the problem of leakage. Finally, the first flange 300 and the second flange 400 are connected by the flange connection bolt 1000 to complete the non-destructive sealed connection of the plastic pipe. Moreover, the structure is simple, the operation is convenient and labor-saving. Secondly, the anti-slip strips 910 can effectively increase the friction force between the staff's hand and the fixed collar 900 when rotating the fixed collar 900, avoiding the phenomenon of hand slipping, which is beneficial for the operation.

[0037] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent replacements or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A non-destructive plastic pipe sealing connection device, comprising a first pipe (100) and a second pipe (200), characterized in that: The first pipe (100) and the second pipe (200) are respectively provided with a first flange (300) and a second flange (400) at their ends close to each other, and an outer support ring (500) and an inner support ring (600) are provided on their surfaces at their sides away from each other, and a fitting groove is provided between the outer support ring (500) and the inner support ring (600), and the ends of the first pipe (100) and the second pipe (200) close to each other fit in the fitting groove, and the inner support ring (600) is provided between the outer support ring (500) and the inner support ring (600). The outer wall of the outer support ring (500) and the inner wall of the outer support ring (500) are both installed with a sealing ring (700), and the sealing ring (700) is used in conjunction with the first pipe (100) and the second pipe (200), the outer wall of the outer support ring (500) is an inclined surface, the outer side of the outer support ring (500) is threadedly connected to a fixing ring (900), and the outer wall of the fixing ring (900) is integrally provided with an anti-slip strip (910), and the first flange (300) and the second flange (400) are connected by flange connecting bolts (1000).

2. A non-destructive plastic pipe sealing connection device according to claim 1, characterized in that: A plurality of sealing rings (700) are provided, and the plurality of sealing rings (700) are equidistantly distributed on the outer wall of the inner support ring (600) and the inner wall of the outer support ring (500).

3. The damage-free plastic pipe sealing connection device according to claim 1, characterized in that: The thickness of one end of the outer support ring (500) close to the first flange (300) is greater than the thickness of the other end.

4. A non-destructive plastic pipe sealing connection device according to claim 1, characterized in that: A channel (800) is provided on the surface of the inner support ring (600), and the diameter of the channel (800) is smaller than the diameter of the inner support ring (600).

5. The damage-free plastic pipe sealing connection device according to claim 1, characterized in that: The diameter of the inner support ring (600) is smaller than the diameter of the outer support ring (500), and the diameter of the outer support ring (500) is smaller than the diameter of the fixing ring (900).

6. The damage-free plastic pipe sealing connection device according to claim 1, characterized in that: A plurality of anti-slip strips (910) are provided, and the plurality of anti-slip strips (910) are distributed in a circular array on the outer wall of the fixing ring (900).

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