Multilayer composite reinforced PTFE straight joint

Abstract

The utility model discloses a multi-layer composite reinforced PTFE straight joint, and belongs to the technical field of pipeline connection. The joint aims at the technical problem that a single-layer fixing structure of an existing PTFE straight joint is prone to loosening, and stable connection of pipelines is achieved through a composite reinforcing structure. The inner core penetrates through the middle of the hexagonal fixing head, and the fixing mechanisms are arranged at the two ends of the hexagonal fixing head and composed of rubber sleeves, pressing sleeves, threaded sleeves, pushing assemblies and pressing assemblies. The outer wall of the rubber sleeve is provided with an anti-sliding groove, a positioning groove and an inner sleeve pipeline; the end part of the pressing sleeve is provided with a deformation groove and a second conical surface; the threaded sleeve is matched with the conical surface of the pressing sleeve to realize radial pressing; the pushing assembly comprises a sleeve and a pushing ring which are in threaded sleeving connection, and the sleeve is rotated to drive the pressing sleeve to axially move and generate deformation clamping; the pressing assembly is composed of a pressing plate, a rubber ring and a third conical surface, the pressing plate fixed through a bolt pushes a convex ring to extrude the rubber ring, and secondary axial pressing is formed. According to the joint, the pipeline connection stability and the compression-resistant sealing performance are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of straight connector technology, and in particular to a multi-layer composite reinforced PTFE straight connector. Background Technology

[0002] A straight connector is a common pipe fitting used to connect two pipe sections. It typically has a straight structure with identical or different interface designs at both ends, ensuring smooth fluid flow through the pipeline without changing its direction. It is widely used in industries such as chemical, food, pharmaceutical, and semiconductor manufacturing, and is particularly suitable for applications requiring corrosion-resistant, high-temperature-resistant, or high-purity media.

[0003] PTFE (polytetrafluoroethylene) straight connectors are ideal for conveying systems of strong acids, strong alkalis or organic solvents due to their excellent chemical inertness, low coefficient of friction and wide temperature range performance. However, most existing PTFE straight connectors are fixed by single-layer extrusion during use. After long-term use or movement, their stability in fixing the pipeline can be affected. Therefore, a multi-layer composite reinforced PTFE straight connector is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing PTFE straight connectors, which are mostly fixed by single-layer extrusion during use. Over time or when moved, these issues can affect the stability of the PTFE straight connector for fixing the pipeline. Therefore, this invention proposes a multi-layer composite reinforced PTFE straight connector.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-layer composite reinforced PTFE straight connector includes a hexagonal fixing head, a through inner core fixedly connected to the center of the fixing head, and fixing mechanisms for fixing pipes provided at both ends of the fixing head.

[0007] The fixing mechanism includes a rubber sleeve, a pressure sleeve, and a threaded sleeve. The rubber sleeve is fixedly fitted around the circumference of the inner core to support the pipe. The pressure sleeve is fitted around the circumference of the pipe to press the pipe. A second conical surface is provided on the outer wall of one end of the pressure sleeve. Multiple deformation grooves are opened at one end of the pressure sleeve. The threaded sleeve is fixed to one side of the fixing head and cooperates with the second conical surface to deform the pressure sleeve and clamp the pipe.

[0008] The fixing mechanism also includes a pushing component, which is disposed on one side of the threaded sleeve for pushing the pressure sleeve;

[0009] The fixing mechanism also includes a clamping component, which is disposed on one side of the pushing component for secondary clamping of the pipe.

[0010] As a further embodiment of this utility model, the pushing component includes a sleeve, the sleeve being threaded onto the outer wall of the threaded sleeve, and a push ring integrally formed at one end of the sleeve, the push ring being located on one side of the pressure sleeve for pushing the pressure sleeve to move.

[0011] As a further embodiment of this utility model, the outer wall of the sleeve is integrally formed with a hexagonal rotating head.

[0012] As a further embodiment of this utility model, the clamping assembly includes a third conical surface, a pressure plate, and a rubber ring. The third conical surface is disposed on one side of the push ring, the pressure plate is threadedly connected to one side of the push ring, and a convex ring is integrally formed on one side of the pressure plate. The rubber ring is located between the convex ring and the third conical surface.

[0013] As a further improvement of this utility model, a positioning groove is provided on the outer circumference of the rubber sleeve, and the positioning groove cooperates with the rubber ring to compress the pipe a second time.

[0014] As a further improvement of this utility model, the outer circumferential wall of the rubber sleeve is provided with multiple anti-slip grooves, which cooperate with the pressure sleeve to clamp the pipe.

[0015] As a further embodiment of this utility model, one end of the rubber sleeve is provided with a first conical surface on its outer wall.

[0016] In this application, during use, a sleeve, a rubber ring, a push ring, and a pressure sleeve are sequentially fitted onto two sections of pipe. Then, the pipe to be connected is fitted onto the rubber sleeve. After it is in place, the pressure sleeve is inserted into the threaded sleeve. The sleeve is then fixed onto the threaded sleeve by rotation. The sleeve drives the push ring to move, thereby pushing the pressure sleeve into the threaded sleeve. Because the pressure sleeve is provided with a deformation groove and a second conical surface, one end of the pressure sleeve contracts when it enters the threaded sleeve, thus clamping the pipe. After the sleeve is rotated into place, the rubber ring is pushed into the third conical surface. Then, the pressure plate is fixed onto the push ring with bolts. The convex ring then squeezes the rubber ring, causing it to deform, thereby clamping the pipe a second time to prevent it from falling off and leaking.

[0017] Beneficial effects: In this utility model, the multi-layer composite reinforced PTFE straight connector, through the cooperation between the sleeve, inner core and pressure sleeve, enables the pressure sleeve to deform when the sleeve is moved, thereby clamping and fixing the pipeline, which is convenient to operate;

[0018] In this utility model, the multi-layer composite reinforced PTFE straight connector uses the cooperation between the pressure plate and the rubber ring to squeeze the rubber ring through the convex ring, causing it to deform, thereby clamping the pipe a second time, increasing the stability of the pipe connection, improving its pressure resistance, and preventing detachment and water leakage.

[0019] In this invention, the pressure sleeve can be deformed when the sleeve is moved, thereby clamping and fixing the pipe. The operation is convenient. At the same time, the moving pressure plate can squeeze the rubber ring through the convex ring, causing it to deform, thereby clamping the pipe a second time, increasing the stability of the pipe connection, improving its pressure resistance, and preventing detachment and water leakage. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a multilayer composite reinforced PTFE straight connector proposed in this utility model;

[0021] Figure 2 This is a cross-sectional view of a multilayer composite reinforced PTFE straight connector proposed in this utility model;

[0022] Figure 3 This is a partially exploded structural diagram of a multilayer composite reinforced PTFE straight connector proposed in this utility model.

[0023] In the diagram: 1. Fixed head; 2. Threaded sleeve; 3. Rotating head; 4. Sleeve; 5. Inner core; 6. Rubber sleeve; 7. Anti-slip groove; 8. First conical surface; 9. Pressure sleeve; 10. Deformation groove; 11. Second conical surface; 12. Push ring; 13. Third conical surface; 14. Pressure plate; 15. Rubber ring; 16. Positioning groove; 17. Protruding ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1, referring to Figures 1-3 A straight connector includes: a hexagonal fixing head 1, a through inner core 5 fixedly connected to the middle of the fixing head 1, and fixing mechanisms for fixing pipes provided at both ends of the fixing head 1.

[0026] The fixing mechanism includes a rubber sleeve 6, a pressure sleeve 9, and a threaded sleeve 2. The rubber sleeve 6 is fixedly fitted around the circumference of the inner core 5 to support the pipe. The pressure sleeve 9 is fitted around the circumference of the pipe to compress the pipe (the pipe is a flexible pipe). The outer wall of one end of the pressure sleeve 9 is provided with a second conical surface 11. Multiple deformation grooves 10 are opened at one end of the pressure sleeve 9. The threaded sleeve 2 is fixed to one side of the fixing head 1 and cooperates with the second conical surface 11 to deform and clamp the pipe. The deformation grooves 10 and the second conical surface 11 on the pressure sleeve 9 make one end of the pressure sleeve 9 contract when it enters the threaded sleeve 2, thereby clamping the pipe for easy use. The deformation grooves 10 can also be set as U-shaped grooves, V-shaped grooves, or trapezoidal grooves. Different groove types can adapt to the deformation requirements of pipes with different wall thicknesses.

[0027] The fixing mechanism also includes a pushing component, which is disposed on one side of the threaded sleeve 2 to push the pressure sleeve 9;

[0028] The fixing mechanism also includes a clamping component, which is located on one side of the pushing component for secondary clamping of the pipe.

[0029] In this utility model, the pushing component includes a sleeve 4, which is threaded onto the outer wall of the threaded sleeve 2. One end of the sleeve 4 is integrally formed with a push ring 12, which is located on one side of the pressure sleeve 9 and is used to push the pressure sleeve 9 to move, insert the pressure sleeve 9 into the threaded sleeve 2, and then drive the push ring 12 to move by rotating the sleeve 4, thereby pushing the pressure sleeve 9 into the inside of the threaded sleeve 2. The operation is convenient.

[0030] In particular, the outer wall of the sleeve 4 is integrally formed with a hexagonal rotating head 3, which makes it convenient for people to rotate the sleeve 4.

[0031] It should be noted that the clamping assembly includes a third conical surface 13, a pressure plate 14, and a rubber ring 15. The third conical surface 13 is located on one side of the push ring 12, and the pressure plate 14 is threadedly connected to one side of the push ring 12. A convex ring 17 is integrally formed on one side of the pressure plate 14, and the rubber ring 15 is located between the convex ring 17 and the third conical surface 13. The pressure plate 14 is fixed to the push ring 12 by bolts, and then the convex ring 17 squeezes the rubber ring 15 to deform it, thereby clamping the pipe a second time, increasing the stability of the pipe connection, preventing detachment and water leakage. The fixed head 1, rotating head 3, sleeve 4, pressure sleeve 9, and pressure plate 14 are all made of PTFE and are not embedded with steel wire.

[0032] This application can be used in the field of water pipe fittings, or in other fields applicable to this application.

[0033] Example 2, Reference Figures 1-3 Based on Example 1, a multi-layer composite reinforced PTFE straight connector is improved and applied to the field of water pipe connectors.

[0034] In this utility model, a positioning groove 16 is provided on the outer circumference of the rubber sleeve 6. The positioning groove 16 cooperates with the rubber ring 15 to press the pipe twice. The positioning groove 16 can enhance the fixing effect of the pipe when the pipe is deformed.

[0035] In particular, the outer circumferential wall of the rubber sleeve 6 is provided with multiple anti-slip grooves 7. The anti-slip grooves 7 cooperate with the pressure sleeve 9 to clamp the pipe. The anti-slip grooves 7 can enhance the fixing effect of the pipe when the pipe is deformed.

[0036] It should be noted that a first conical surface 8 is provided on the outer wall of one end of the rubber sleeve 6. The first conical surface 8 can facilitate the pipe to be fitted onto the rubber sleeve 6.

[0037] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0038] 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 multi-layer composite reinforced PTFE straight connector, comprising a hexagonal fixing head (1), characterized in that, The fixing head (1) has a through inner core (5) fixedly connected in the middle, and both ends of the fixing head (1) are provided with fixing mechanisms for fixing pipes. The fixing mechanism includes a rubber sleeve (6), a pressure sleeve (9), and a threaded sleeve (2). The rubber sleeve (6) is fixedly fitted around the circumference of the inner core (5) to support the pipe. The pressure sleeve (9) is fitted around the circumference of the pipe to press the pipe. A second conical surface (11) is provided on the outer wall of one end of the pressure sleeve (9). A plurality of deformation grooves (10) are opened at one end of the pressure sleeve (9). The threaded sleeve (2) is fixed on one side of the fixing head (1) and cooperates with the second conical surface (11) to deform the pressure sleeve (9) and clamp the pipe. The fixing mechanism also includes a pushing component, which is disposed on one side of the threaded sleeve (2) for pushing the pressure sleeve (9). The fixing mechanism also includes a clamping component, which is disposed on one side of the pushing component for secondary clamping of the pipe.

2. The multilayer composite reinforced PTFE straight connector according to claim 1, characterized in that, The pushing component includes a sleeve (4), which is threaded onto the outer wall of the threaded sleeve (2). One end of the sleeve (4) is integrally formed with a push ring (12), which is located on one side of the pressure sleeve (9) and is used to push the pressure sleeve (9) to move.

3. A multi-layer composite reinforced PTFE straight connector according to claim 2, characterized in that, The outer wall of the sleeve (4) is integrally formed with a hexagonal rotating head (3).

4. A multi-layer composite reinforced PTFE straight connector according to claim 2, characterized in that, The clamping assembly includes a third conical surface (13), a pressure plate (14), and a rubber ring (15). The third conical surface (13) is disposed on one side of the push ring (12). The pressure plate (14) is threadedly connected to one side of the push ring (12). A convex ring (17) is integrally formed on one side of the pressure plate (14). The rubber ring (15) is located between the convex ring (17) and the third conical surface (13).

5. A multi-layer composite reinforced PTFE straight connector according to claim 4, characterized in that, The outer circumferential wall of the rubber sleeve (6) is provided with a positioning groove (16), which cooperates with the rubber ring (15) to press the pipe twice.

6. A multi-layer composite reinforced PTFE straight connector according to claim 2, characterized in that, The outer circumferential wall of the rubber sleeve (6) is provided with multiple anti-slip grooves (7), which cooperate with the pressure sleeve (9) to clamp the pipe.

7. A multi-layer composite reinforced PTFE straight connector according to claim 1, characterized in that, One end of the rubber sleeve (6) is provided with a first conical surface (8) on its outer wall.

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