A polytetrafluoroethylene composite pipe connection structure

Abstract

The utility model discloses a polytetrafluoroethylene composite pipe connection structure in the composite pipe field, comprising a positioning sleeve shell and a second pipe sleeve, the second pipe sleeve being threadedly connected to the inner cavity of the positioning sleeve shell, the left side wall of the positioning sleeve shell being fixedly connected with the first pipe sleeve, the middle of the top of the outer wall of the first pipe sleeve and the middle of the bottom of the outer wall being threadedly connected with a screw rod, the left side wall of the positioning sleeve shell is provided with a through hole, the inner side wall of the through hole is fixedly connected with a first sealing ring, the inner cavity of the first sealing ring is slidably connected with a first pipe fitting, the right side of the outer wall of the first pipe fitting is sleeved with a limiting ring, and the right side of the inner wall of the second pipe sleeve is fixedly connected with the limiting ring. The polytetrafluoroethylene composite pipe connection structure has a quick connection structure, so that the connection structure docking process is time-saving and labor-saving, and is convenient for quick connection and disassembly without the assistance of tools, thereby improving the use efficiency of the polytetrafluoroethylene composite pipe and facilitating use.

Description

Technical Field

[0001] The utility model relates to the technical field of composite pipes, in particular to a polytetrafluoroethylene composite pipe connection structure. Background Art

[0002] Polytetrafluoroethylene, commonly known as the king of plastics, is a high molecular polymer made by polymerizing tetrafluoroethylene as a monomer. Composite pipes made of polytetrafluoroethylene have excellent heat resistance and cold resistance, are resistant to acids and alkalis, and various organic solvents, and are almost insoluble in all solvents. At the same time, polytetrafluoroethylene composite pipes are resistant to high temperatures and have an extremely low friction coefficient.

[0003] At present, in the process of using polytetrafluoroethylene composite pipes, since most of the polytetrafluoroethylene composite pipes are in sections, the pipe fittings often need to be spliced, and the polytetrafluoroethylene composite pipe assembly connection method is to simply fix and connect the two pipe fittings through the flange provided at the connecting end of the polytetrafluoroethylene composite pipe. The docking process of its connection structure is time-consuming and labor-intensive, and it is not convenient to quickly connect and disassemble without the assistance of tools, which reduces the use efficiency of the polytetrafluoroethylene composite pipe and is inconvenient to use. For this reason, we propose a polytetrafluoroethylene composite pipe connection structure. Utility Model Content

[0004] The utility model aims to provide a polytetrafluoroethylene composite pipe connection structure to solve the problem that most of the polytetrafluoroethylene composite pipes mentioned in the background technology are in sections, and pipe fittings often need to be spliced, and the polytetrafluoroethylene composite pipe assembly connection method is to simply fix and connect two pipe fittings through flanges provided at the connecting ends of the polytetrafluoroethylene composite pipes, and the docking process of the connection structure is time-consuming and labor-intensive, and it is not convenient to quickly connect and disassemble without the assistance of tools, which reduces the use efficiency of the polytetrafluoroethylene composite pipe and is inconvenient to use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a polytetrafluoroethylene composite pipe connection structure, comprising a positioning sleeve and a second sleeve, the second sleeve being threadedly connected to the inner cavity of the positioning sleeve, the left side wall of the positioning sleeve being fixedly connected to the first sleeve, the middle of the top of the outer wall of the first sleeve and the middle of the bottom of the outer wall being threadedly connected to a screw rod, the left side wall of the positioning sleeve being provided with a through hole, the inner side wall of the through hole being fixedly connected to a first sealing ring, the inner cavity of the first sealing ring being slidably connected to a first pipe fitting, the right side of the outer wall of the first pipe fitting being sleeved with a limiting ring, the right side of the inner wall of the second sleeve being fixedly connected to the limiting ring, and the outer side wall of the limiting ring being slidably connected to the second pipe fitting.

[0006] As a further description of the above technical solution:

[0007] The end of the screw rod is rotatably connected with a clamping block, and the clamping block is made of aluminum alloy.

[0008] As a further description of the above technical solution:

[0009] A second sealing ring is sleeved on the left side of the outer side wall of the second pipe member, and the second sealing ring and the first sealing ring are both made of rubber material.

[0010] As a further description of the above technical solution:

[0011] A positioning groove is provided on the left side of the inner side wall of the second pipe sleeve, and the inner side wall of the positioning groove is rotatably connected to the third pipe sleeve.

[0012] As a further description of the above technical solution:

[0013] The right side wall of the second pipe sleeve is fixedly connected with a fourth pipe sleeve, and the right side of the outer side wall of the fourth pipe sleeve is sleeved with a positioning ring.

[0014] As a further description of the above technical solution:

[0015] The right side wall of the positioning ring is provided with positioning holes, and the positioning holes are distributed in a ring shape.

[0016] Compared with the prior art, the beneficial effect of the utility model is as follows: the polytetrafluoroethylene composite pipe connection structure, through the first pipe fitting provided, is first inserted into the interior of the positioning sleeve through the through hole in cooperation with the first sealing ring, and then the first pipe fitting is fixed by the screw rod in cooperation with the clamping block and the first pipe sleeve, and then the second pipe sleeve is assisted to be connected to the positioning sleeve through the positioning ring in cooperation with the fourth pipe sleeve. During this process, the limiting ring drives the second pipe fitting in cooperation with the second sealing ring to complete docking with the first pipe fitting, so that the polytetrafluoroethylene composite pipe has a quick connection structure, which saves time and effort in the docking process of the connection structure, facilitates quick connection and disassembly without the assistance of tools, improves the use efficiency of the polytetrafluoroethylene composite pipe, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a polytetrafluoroethylene composite pipe connection structure proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of a polytetrafluoroethylene composite pipe connection structure proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the main cross-sectional structure of a polytetrafluoroethylene composite pipe connection structure proposed by the utility model;

[0020] Figure 4 A polytetrafluoroethylene composite pipe connection structure proposed by the utility model Figure 3 Enlarged structural diagram at A in the middle.

[0021] In the figure: 100, positioning sleeve; 110, first sleeve; 120, screw rod; 130, clamping block; 140, through hole; 150, first sealing ring; 160, first pipe fitting; 170, limiting ring; 200, second sleeve; 210, limiting ring; 220, second pipe fitting; 230, second sealing ring; 240, positioning groove; 250, third sleeve; 260, fourth sleeve; 270, positioning ring; 280, positioning hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] The utility model provides a polytetrafluoroethylene composite pipe connection structure, which is convenient for quick connection and disassembly without the assistance of tools. Figure 1-4, comprising a positioning sleeve 100 and a second sleeve 200;

[0026] Please refer again Figure 1-4 The left side wall of the positioning sleeve 100 is fixedly connected with a first sleeve 110, and a screw rod 120 is threadedly connected in the middle of the top and bottom of the outer wall of the first sleeve 110. The screw rod 120 is used to cooperate with the first sleeve 110 to drive the clamping block 130 to fix the first pipe fitting 160. A through hole 140 is opened on the left side wall of the positioning sleeve 100, and a first sealing ring 150 is fixedly connected to the inner side wall of the through hole 140. The first sealing ring 150 is used to seal the connection between the positioning sleeve 100 and the first pipe fitting 160. The inner cavity of the first sealing ring 150 is slidably connected with the first pipe fitting 160. A limiting ring 170 is sleeved on the right side of the outer wall of the first pipe fitting 160. The limiting ring 170 is used to limit the depth of the first pipe fitting 160 inserted into the positioning sleeve 100. The positioning sleeve 100 is used to dock with the second sleeve 200;

[0027] Please refer again Figure 1-4 The right side of the inner wall of the second pipe sleeve 200 is fixedly connected to a limiting ring 210, and the outer wall of the limiting ring 210 is slidably connected to the second pipe fitting 220. The limiting ring 210 is used to ensure that the second pipe sleeve 200 does not rotate in conjunction with the second pipe fitting 220 when the second pipe sleeve 200 is rotated. The second pipe sleeve 200 is threadedly connected to the inner cavity of the positioning sleeve shell 100, and the second pipe sleeve 200 is used to support the second pipe fitting 220.

[0028] Please refer again Figure 1-4 The end of the screw rod 120 is rotatably connected to a clamping block 130 , and the clamping block 130 is made of an aluminum alloy material. The clamping block 130 made of an aluminum alloy material has high strength and corrosion resistance.

[0029] Please refer again Figure 1-4 A second sealing ring 230 is sleeved on the left side of the outer wall of the second pipe 220. The second sealing ring 230 and the first sealing ring 150 are both made of rubber material. The second sealing ring 230 and the first sealing ring 150 made of rubber material have high sealing performance.

[0030] Please refer again Figure 1-4 A positioning groove 240 is opened on the left side of the inner wall of the second pipe sleeve 200, and the inner wall of the positioning groove 240 is rotatably connected to the third pipe sleeve 250. The positioning groove 240 cooperates with the third pipe sleeve 250 to block and close the connection between the first pipe fitting 160 and the second pipe fitting 220.

[0031] Please refer again Figure 1-4The right side wall of the second sleeve 200 is fixedly connected with a fourth sleeve 260, and the right side of the outer side wall of the fourth sleeve 260 is sleeved with a positioning ring 270. The fourth sleeve 260 can assist the positioning ring 270 to bear force and drive the second sleeve 200 to rotate.

[0032] Please refer again Figure 1-4 A positioning hole 280 is opened on the right side wall of the positioning ring 270, and the positioning holes 280 are distributed in a ring shape, so that the positioning hole 280 can provide convenience for manually rotating the positioning ring 270.

[0033] To summarize, the first pipe fitting 160 is first inserted into the interior of the positioning sleeve 100 through the through hole 140 in cooperation with the first sealing ring 150, and then the first pipe fitting 160 is fixed by the screw rod 120 in cooperation with the clamping block 130 and the first pipe sleeve 110, and then the second pipe sleeve 200 is assisted to connect with the positioning sleeve 100 through the positioning ring 270 in cooperation with the fourth pipe sleeve 260. During this process, the limiting ring 210 drives the second pipe fitting 220 to cooperate with the second sealing ring 230 to complete docking with the first pipe fitting 160, so that the polytetrafluoroethylene composite tube has a quick connection structure, which makes the connection structure docking process time-saving and labor-saving, and is convenient for quick connection and disassembly without the assistance of tools, thereby improving the use efficiency of the polytetrafluoroethylene composite tube and facilitating use.

[0034] During specific use, personnel in this technical field first manually insert the first pipe fitting 160 into the first sealing ring 150, and limit the first pipe fitting 160 by the limiting ring 170 against the first pipe sleeve 110, and then hold the screw rod 120 to rotate, drive the screw rod 120 to cooperate with the first pipe sleeve 110 to drive the clamping block 130 to fix the first pipe fitting 160, and then hold the positioning ring 270 to cooperate with the fourth pipe sleeve 260 to rotate the second pipe sleeve 200 corresponding to the connection of the positioning sleeve shell 100, drive the second pipe sleeve 200 and the positioning sleeve shell 100 to be threadedly connected, and at the same time, the second pipe sleeve 200 cooperates with the limiting ring 210 to drive the second pipe fitting 220 to enter the interior of the positioning sleeve shell 100, and finally cooperates with the second sealing ring 230 to complete the connection with the first pipe fitting 160.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A polytetrafluoroethylene composite pipe connection structure, characterized in that: The invention comprises a positioning sleeve (100) and a second pipe sleeve (200), wherein the second pipe sleeve (200) is threadedly connected to the inner cavity of the positioning sleeve (100), the left side wall of the positioning sleeve (100) is fixedly connected to the first pipe sleeve (110), the middle of the top of the outer wall of the first pipe sleeve (110) and the middle of the bottom of the outer wall are threadedly connected to a screw rod (120), the left side wall of the positioning sleeve (100) is provided with a through hole (140), the inner side wall of the through hole (140) is fixedly connected to a first sealing ring (150), the inner cavity of the first sealing ring (150) is slidably connected to a first pipe fitting (160), the right side of the outer wall of the first pipe fitting (160) is sleeved with a limiting ring (170), the right side of the inner wall of the second pipe sleeve (200) is fixedly connected to a limiting ring (210), and the outer side wall of the limiting ring (210) is slidably connected to a second pipe fitting (220).

2. A polytetrafluoroethylene composite pipe connection structure according to claim 1, characterized in that: The end of the screw rod (120) is rotatably connected to a clamping block (130), and the clamping block (130) is made of aluminum alloy.

3. The polytetrafluoroethylene composite pipe connection structure according to claim 1, characterized in that: A second sealing ring (230) is sleeved on the left side of the outer wall of the second pipe member (220), and the second sealing ring (230) and the first sealing ring (150) are both made of rubber material.

4. The polytetrafluoroethylene composite pipe connection structure according to claim 1, characterized in that: A positioning groove (240) is provided on the left side of the inner side wall of the second pipe sleeve (200), and the inner side wall of the positioning groove (240) is rotatably connected to the third pipe sleeve (250).

5. The polytetrafluoroethylene composite pipe connection structure according to claim 1, characterized in that: The right side wall of the second pipe sleeve (200) is fixedly connected to a fourth pipe sleeve (260), and the right side of the outer side wall of the fourth pipe sleeve (260) is sleeved with a positioning ring (270).

6. A polytetrafluoroethylene composite pipe connection structure according to claim 5, characterized in that: The right side wall of the positioning ring (270) is provided with positioning holes (280), and the positioning holes (280) are distributed in a ring shape.

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