Teflon pipe fitting convenient to fix

Abstract

The utility model discloses a teflon pipe fitting convenient to fix, and relates to the technical field of teflon pipe fittings, the teflon pipe fitting comprises an outer pipeline, connecting flanges are symmetrically installed at the two ends of the outer pipeline, positioning assemblies are installed on the outer sides of the connecting flanges, the two ends of the pipe fitting are convenient to connect and fix through the positioning assemblies, and each positioning assembly comprises a circular butt joint shell. And the circular butt joint shell is fixed to the outer side of the connecting flange, a mounting groove is formed in the inner side of the circular butt joint shell, and a limiting structure is mounted in the mounting groove and used for generating pressure. During positioning, the clamping balls are extruded to move downwards under the action of the connecting springs, so that directional pressure is generated to limit the connecting flanges, the butted connecting flanges are limited through the positioning component, and convenience and inconvenience in fixing of the pipe fittings during butting and fixing are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of polytetrafluoroethylene pipe fittings, in particular to a polytetrafluoroethylene pipe fitting which is convenient to fix. Background Art

[0002] Steel-lined polytetrafluoroethylene pipes have excellent corrosion resistance, acid and alkali resistance and heat resistance. They can resist almost all chemical media except molten metal lithium, potassium, sodium, chlorine trifluoride, oxygen trifluoride at high temperature, and liquid fluorine at high flow rate. PTFE pipe fittings are generally used in chemical, mechanical, metallurgical and other fields.

[0003] Patent document CN214662812U discloses a damage-resistant steel-lined PTFE pipe fitting. "The steel-lined PTFE pipe fitting in the patent document was not convenient to be docked and fixed when docking, which would affect the installation efficiency of the PTFE pipe fitting. Utility Model Content

[0004] One purpose of the present application is to provide a conveniently fixed polytetrafluoroethylene pipe fitting to solve the technical problem in the prior art that the steel-lined polytetrafluoroethylene pipe fittings are not conveniently butt-jointed and fixed during butt-jointing, thus affecting the installation efficiency of the polytetrafluoroethylene pipe fittings.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a conveniently fixed polytetrafluoroethylene pipe fitting, comprising an outer pipe, connecting flanges are symmetrically installed at both ends of the outer pipe, a positioning assembly is installed on the outside of the connecting flange, the positioning assembly facilitates the connection and fixation of the two ends of the pipe fitting, the positioning assembly comprises a circular docking shell, and the circular docking shell is fixed on the outside of the connecting flange, an installation groove is opened on the inside of the circular docking shell, a limiting structure is installed inside the installation groove, and the limiting structure is used to generate pressure.

[0006] Preferably, the limiting structure includes a connecting spring, an arc-shaped connecting shell is installed on the top of the connecting spring, a positioning ball is installed on the inner side of the arc-shaped connecting shell, and the top of the positioning ball protrudes from the inside of the installation groove.

[0007] Preferably, a polytetrafluoroethylene lining is installed on the inner side of the outer pipe.

[0008] Preferably, the outer side of the outer pipe is provided with limiting grooves, and the limiting grooves are arranged and distributed in sequence.

[0009] Preferably, a fastening ring is connected to the inner side of the limiting groove, and fastening plates are symmetrically installed at the top opening of the fastening ring, and the fastening plates are connected by fastening bolts.

[0010] Preferably, a connecting seat is installed at the bottom of the fastening ring, and moving wheels are symmetrically installed on the front and back sides of the connecting seat.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, when connecting and fixing, the two ends of the outer pipe will be butted, the connecting flanges will overlap, and then fixed by bolts. In order to ensure that the connecting flanges are more stable when butted, the positioning assembly is located on the outside of the connecting flange to position it. When positioning, the positioning ball is squeezed and moves downward under the action of the connecting spring, thereby generating directional pressure to limit the connecting flange. The butted connecting flanges are limited by the positioning assembly to avoid displacement of the pipe fittings during butt fixing, which is inconvenient for fixing the pipe fittings.

[0013] 2. The limiting groove in the utility model is used to limit the fastening ring, so that the fastening ring is more stable when fixed on the outside of the outer pipe to avoid sliding. The connecting seat is used to support the pipe fittings for fixed use. After the pipe fittings are placed and fixed, they are in a suspended state to avoid bending after being subjected to pressure. At the same time, the installation of the moving wheel makes it easier and more convenient to transport or connect and fix the pipe fittings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 For the utility model Figure 1 Schematic diagram of the structure at A in the middle;

[0016] Figure 3 This is a schematic diagram of the circular docking shell structure of the utility model;

[0017] Figure 4 For the utility model Figure 3 Schematic diagram of the structure at point B in the middle.

[0018] In the figure: 1. outer pipe; 2. limit groove; 3. fastening ring; 4. fastening plate; 5. connecting seat; 6. moving wheel; 7. PTFE lining; 8. connecting flange; 9. circular docking shell; 10. mounting groove; 11. connecting spring; 12. arc-shaped connecting shell; 13. positioning ball. DETAILED DESCRIPTION

[0019] 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.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 an indirect connection 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.

[0022] See also Figure 1 , Figure 3 and Figure 4 , an embodiment provided by the utility model: a conveniently fixed polytetrafluoroethylene pipe fitting;

[0023] It includes an outer pipe 1 and a positioning component. The two ends of the outer pipe 1 are symmetrically installed with connecting flanges 8. The outer side of the connecting flange 8 is installed with a positioning component. The positioning component facilitates the connection and fixation of the two ends of the pipe fitting. The positioning component includes a circular docking shell 9, and the circular docking shell 9 is fixed on the outer side of the connecting flange 8. The inner side of the circular docking shell 9 is provided with a mounting groove 10. The inner side of the mounting groove 10 is provided with a limiting structure. The limiting structure is used to generate pressure. The limiting structure includes a connecting spring 11. The top of the connecting spring 11 is provided with an arc-shaped connecting shell 12. The inner side of the arc-shaped connecting shell 12 is provided with a positioning ball 13, and the top of the positioning ball 13 protrudes from the inside of the mounting groove 10.

[0024] The outer pipe 1 is a pipe for liquid circulation. The outer pipes 1 are connected to provide a channel for the flow of liquid. The connecting flange 8 plays a connecting role. The outer pipes 1 are connected by the connecting flange 8, so that the outer pipe 1 is fixed for use. When connecting and fixing, the two ends of the outer pipe 1 will be docked, the connecting flanges 8 will overlap, and then fixed by bolts. In order to ensure that the connecting flanges 8 are more stable when docking, the positioning component is located on the outside of the connecting flange 8 to position it. When positioning, the positioning ball 13 is squeezed and moved downward under the action of the connecting spring 11, thereby generating directional pressure to limit the connecting flange 8. The docking connecting flange 8 is limited by the positioning component to avoid displacement of the pipe fittings during docking and fixation, which is inconvenient for fixing the pipe fittings.

[0025] See also Figure 1 and Figure 2 , an embodiment provided by the utility model: a conveniently fixed polytetrafluoroethylene pipe fitting;

[0026] It includes a fastening ring 3, a polytetrafluoroethylene lining 7 is installed on the inner side of the outer pipe 1, a limiting groove 2 is provided on the outer side of the outer pipe 1, and the limiting grooves 2 are arranged in sequence, the inner side of the limiting groove 2 is connected to the fastening ring 3, the top opening of the fastening ring 3 is symmetrically installed with a fastening plate 4, the fastening plates 4 are connected by fastening bolts, a connecting seat 5 is installed at the bottom of the fastening ring 3, and moving wheels 6 are symmetrically installed on the front and back of the connecting seat 5;

[0027] The polytetrafluoroethylene lining 7 is installed on the inner wall of the outer pipe 1, so that the pipe fittings have corrosion resistance, acid and alkali resistance and heat resistance. The limiting groove 2 is used to limit the fastening ring 3, so that the fastening ring 3 is more stable when fixed on the outside of the outer pipe 1 to avoid sliding. The connecting seat 5 is used to support the pipe fittings for fixed use. After the pipe fittings are placed and fixed, they are in a suspended state to avoid bending after being subjected to pressure. At the same time, the installation of the moving wheel 6 makes the pipe fittings easier and more convenient to transport or connect and fix.

[0028] Working principle: Before using the easy-to-fix PTFE pipe fittings, you should first check whether there are any problems that affect the use of the easy-to-fix PTFE pipe fittings. First, when the PTFE pipe fittings are docked, the positioning component is located on the outside of the connecting flange 8 to limit the position between the docking connecting flanges 8, and then the holes on the flanges are aligned so that the connecting flanges 8 will not be misaligned when the staff aligns the holes and fixes them, which makes it more convenient to fix the pipe fittings. At the same time, under the action of the PTFE lining 7, the pipeline can provide a transmission channel for corrosive liquids.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A conveniently fixed polytetrafluoroethylene pipe fitting, comprising an outer pipe (1), characterized in that: The two ends of the outer pipe (1) are symmetrically provided with connecting flanges (8), and the outer side of the connecting flange (8) is provided with a positioning assembly, and the positioning assembly facilitates the connection and fixation of the two ends of the pipe fitting, and the positioning assembly comprises a circular docking shell (9), and the circular docking shell (9) is fixed on the outer side of the connecting flange (8), and the inner side of the circular docking shell (9) is provided with a mounting groove (10), and the interior of the mounting groove (10) is provided with a limiting structure, and the limiting structure is used to generate pressure.

2. A conveniently fixed polytetrafluoroethylene pipe fitting according to claim 1, characterized in that: The limiting structure comprises a connecting spring (11), the top end of the connecting spring (11) is provided with an arc-shaped connecting shell (12), the inner side of the arc-shaped connecting shell (12) is provided with a positioning ball (13), and the top of the positioning ball (13) protrudes from the inside of the mounting groove (10).

3. A conveniently fixed polytetrafluoroethylene pipe fitting according to claim 2, characterized in that: A polyfluorite lining (7) is installed on the inner side of the outer pipe (1).

4. A conveniently fixed polytetrafluoroethylene pipe fitting according to claim 1, characterized in that: The outer side of the outer pipe (1) is provided with limiting grooves (2), and the limiting grooves (2) are arranged and distributed in sequence.

5. A conveniently fixed polytetrafluoroethylene pipe fitting according to claim 4, characterized in that: A fastening ring (3) is connected to the inner side of the limiting groove (2), and fastening plates (4) are symmetrically mounted at the top opening of the fastening ring (3), and the fastening plates (4) are connected by fastening bolts.

6. A conveniently fixed polytetrafluoroethylene pipe fitting according to claim 5, characterized in that: A connecting seat (5) is installed at the bottom of the fastening ring (3), and moving wheels (6) are symmetrically installed on the front and back sides of the connecting seat (5).

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