Polytetrafluoroethylene sealing gasket

Abstract

The utility model relates to the technical field of sealing gaskets, in particular to a polytetrafluoroethylene sealing gasket which comprises an outer ring and an inner ring, the inner wall of the outer ring is fixedly connected with a base ring, the inner wall of the base ring abuts against a round pipe, the outer wall of the round pipe is connected with a limiting mechanism, and the limiting mechanism comprises a fixing base. The lower end of the fixing base is fixedly connected with the circular pipe, the inner wall of the fixing base abuts against the limiting rod, and the end of the limiting rod abuts against the stainless steel plate. Polytetrafluoroethylene dispersion emulsion is used as a main base material to make contact with the positions of a reinforcing sealing mechanism, polyester threads and the like, excellent corrosion resistance and low friction characteristics are provided for the sealing gasket due to chemical stability and non-viscosity, the lower end and the outer wall of the PTFE gasket are fixed through a graphite composite plate and a graphite belt graphite material, and therefore the sealing gasket has the good sealing performance. The temperature resistance and the heat conduction performance of the PTFE gasket are enhanced, and the sealing performance and the durability of the whole PTFE gasket in a high-temperature environment are prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing gaskets, and specifically relates to a polytetrafluoroethylene sealing gasket. Background Technique

[0002] Sealing gaskets are used for the sealed connection between pipes and the sealed connection between machine parts of machinery and equipment. Gasket sealing plays a very important role in modern industrial enterprises. The quality of sealing is directly related to the continuity of production, property safety, energy conservation and environmental protection, as well as people's physical and mental health. Therefore, the development of gaskets has received more and more attention.

[0003] For example, a polytetrafluoroethylene sealing gasket with the authorization announcement number of "CN210890076U" solves the problems of the existing polytetrafluoroethylene sealing gasket, such as the gaskets cannot fit completely with each other, affecting the sealing effect and being inconvenient to use. Through the limiting groove and the sealing ring, the above improves the sealing performance between the gasket and the inner wall of the pipe, improves the sealing effect of the gasket, and the limiting groove and the sealing ring are designed to be detachable. When the sealing ring wears, it can be replaced in time, improving the practicability and service life. Considering the complex environment in which the polytetrafluoroethylene sealing gasket is used, in the face of a high-temperature use environment, the existing gasket deforms when it comes into contact with high temperature, resulting in poor overall sealing performance and durability. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problems of the existing polytetrafluoroethylene sealing gasket, and to propose a polytetrafluoroethylene sealing gasket.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A polytetrafluoroethylene sealing gasket, including an outer ring and an inner ring, the inner wall of the outer ring is fixedly connected with a base ring, the inner wall of the base ring abuts against a circular tube, a limiting mechanism is connected to the outer wall of the circular tube, the limiting mechanism includes a fixed seat, the lower end of the fixed seat is fixedly connected with the circular tube, the inner wall of the fixed seat abuts against a limiting rod, and the end of the limiting rod abuts against a stainless steel plate.

[0006] Preferably, the outer wall of the stainless steel plate is fixedly connected with a polyester thread, and a reinforcement sealing mechanism is connected to the upper end of the stainless steel plate.

[0007] Preferably, the reinforcement sealing mechanism includes an oil-resistant plate, the lower end of the oil-resistant plate is fixedly connected with the stainless steel plate, the upper end of the oil-resistant plate is fixedly connected with a graphite strip, and the inner wall of the graphite strip is fixedly connected with a PTFE gasket.

[0008] Preferably, a polytetrafluoroethylene dispersion emulsion is installed on the inner wall of the fixed seat.

[0009] Preferably, the lower end of the stainless steel plate is fixedly connected to the graphite composite plate.

[0010] Preferably, the lower end of the graphite composite plate is in contact with the fixing seat.

[0011] The present utility model provides a PTFE sealing gasket, and the beneficial effects are as follows: By using PTFE dispersion emulsion as the main base material, it contacts the reinforcement sealing mechanism and the polyester thread, etc. Due to its chemical stability and non-adhesiveness, it provides excellent corrosion resistance and low friction characteristics for the sealing gasket. There are graphite composite plates and graphite materials such as graphite belts to fix the lower end and outer wall of the PTFE gasket, enhancing the heat resistance and thermal conductivity of the PTFE gasket, and realizing the extension of the overall sealing performance and durability in the face of high-temperature environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] Figure 2 is Figure 1 the front view sectional structural diagram in

[0014] Figure 3 is Figure 1 the top view sectional structural diagram in

[0015] Figure 4 is Figure 2 the enlarged structural diagram at position A in

[0016] Figure 5 is Figure 2 the enlarged structural diagram at position B in

[0017] Figure 6 is Figure 1 the enlarged structural diagram of the fixing seat in

[0018] In the figure: 1, outer ring; 2, inner ring; 3, base ring; 5, circular tube; 6, limiting mechanism; 601, fixing seat; 602, limiting rod; 603, stainless steel plate; 7, polyester thread; 8, reinforcement sealing mechanism; 801, oil-resistant plate; 802, graphite belt; 803, PTFE gasket; 9, PTFE dispersion emulsion; 10, graphite composite plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present utility model will be further described below with reference to the accompanying drawings:

[0020] Embodiment 1:

[0021] Please refer to Figures 1-6: In this embodiment, a polytetrafluoroethylene sealing gasket includes an outer ring 1 and an inner ring 2. The inner wall of the outer ring 1 is fixedly connected to a base ring 3. The inner wall of the base ring 3 abuts tightly against a round tube 5. A limiting mechanism 6 is connected to the outer wall of the round tube 5. The limiting mechanism 6 includes a fixed seat 601. A limiting rod 602 protrudes a certain length inside the fixed seat 601, so that the outer wall of the limiting rod 602 is stuck into the inner wall of a stainless steel plate 603, achieving the effect of limiting the stainless steel plate 603 inside the fixed seat 601. The lower end of the fixed seat 601 is fixedly connected to the round tube 5. The inner wall of the fixed seat 601 abuts tightly against the limiting rod 602. The end of the limiting rod 602 abuts tightly against the stainless steel plate 603.

[0022] The outer wall of the stainless steel plate 603 is fixedly connected to a polyester thread 7. A reinforcing and sealing mechanism 8 is connected to the upper end of the stainless steel plate 603. The reinforcing and sealing mechanism 8 includes an oil-resistant plate 801. A graphite tape 802 is wrapped around the outer wall of a PTFE gasket 803, so that the graphite tape 802 conducts heat to the PTFE gasket 803 and thickens the surrounding density, enhancing the overall service strength. The lower end of the oil-resistant plate 801 is fixedly connected to the stainless steel plate 603. The upper end of the oil-resistant plate 801 is fixedly connected to the graphite tape 802. The inner wall of the graphite tape 802 is fixedly connected to the PTFE gasket 803. Due to the chemical inertness of the PTFE gasket 803, it is developed to be able to withstand strong acids and alkalis, and its service tolerance is more obvious;

[0023] Polytetrafluoroethylene dispersion emulsion 9 is used as the main base material to contact positions such as the reinforcing and sealing mechanism 8 and the polyester thread 7. Due to its chemical stability and non-stickiness, it provides excellent corrosion resistance and low friction characteristics for the sealing gasket. And a graphite composite plate 10 and the graphite tape 802 made of graphite material fix the lower end and the outer wall of the PTFE gasket 803, enhancing the temperature resistance and heat conduction performance of the PTFE gasket 803, and realizing the extension of the overall sealing performance and durability in the face of high-temperature environments.

[0024] Working principle:

[0025] During the use and assembly stage

[0026] First, press the fixed seat 601 forcefully. The round tube 5 on the fixed seat 601 will be inserted into the inside of the base ring 3. The outer wall of the round tube 5 will be tightly fixed to the base ring 3, so that fixed seats 601 are fixed on both the upper and lower sides inside the outer ring 1. Then put the graphite composite plate 10 into the inside of the fixed seat 601, and put the stainless steel plate 603 together with the reinforcing and sealing mechanism 8 at the upper end into the fixed seat 601. Then press the graphite tape 802 outside the external reinforcing and sealing mechanism 8. The inner wall of the stainless steel plate 603 will abut tightly against the limiting rod 602, making the stainless steel plate 603 more firm inside the fixed seat 601, and realizing the overall assembly.

[0027] Embodiment 2:

[0028] Please refer to Figures 1-6 : In this embodiment, the inner wall of the threaded block 7 is threadedly connected to the fixing screw 10. The inner wall of the fixing seat 601 is provided with a polytetrafluoroethylene dispersion emulsion 9. The lower end of the stainless steel plate 603 is fixedly connected to the graphite composite plate 10, and the lower end of the graphite composite plate 10 is in contact with the fixing seat 601.

[0029] Working principle

[0030] Using the stainless steel plate 603 as a metal reinforcement material to improve the mechanical strength and pressure resistance of the PTFE gasket 803. The polyester thread 7 is used for the winding and braiding process of the stainless steel plate 603 to increase the flexibility and sealing performance at the lower end of the PTFE gasket 803. The polytetrafluoroethylene dispersion emulsion 9 is used as the main base material. Due to its excellent chemical stability and non-stickiness, it provides excellent corrosion resistance and low friction characteristics for the sealing gasket. Combining with the graphite material of the graphite composite plate 10 to enhance the heat resistance and heat conduction performance of the PTFE gasket 803.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A polytetrafluoroethylene sealing gasket, comprising an outer ring (1) and an inner ring (2), characterized in that: The inner wall of the outer ring (1) is fixedly connected to the base ring (3). The inner wall of the base ring (3) is in tight contact with the round tube (5). The outer wall of the round tube (5) is connected with a limiting mechanism (6). The limiting mechanism (6) includes a fixed seat (601). The lower end of the fixed seat (601) is fixedly connected to the round tube (5). The inner wall of the fixed seat (601) is in tight contact with a limiting rod (602). The end of the limiting rod (602) is in tight contact with a stainless steel plate (603).

2. The polytetrafluoroethylene sealing gasket according to claim 1, wherein: The outer wall of the stainless steel plate (603) is fixedly connected to a polyester thread (7). The upper end of the stainless steel plate (603) is connected with a reinforcement and sealing mechanism (8).

3. A polytetrafluoroethylene sealing gasket according to claim 2, characterized in that: The reinforcement and sealing mechanism (8) includes an oil-resistant plate (801). The lower end of the oil-resistant plate (801) is fixedly connected to the stainless steel plate (603). The upper end of the oil-resistant plate (801) is fixedly connected to a graphite tape (802). The inner wall of the graphite tape (802) is fixedly connected to a PTFE gasket (803).

4. A polytetrafluoroethylene sealing gasket according to claim 1, characterized in that: The inner wall of the fixed seat (601) is provided with a polytetrafluoroethylene dispersion emulsion (9).

5. A polytetrafluoroethylene sealing gasket according to claim 1, characterized in that: The lower end of the stainless steel plate (603) is fixedly connected to a graphite composite plate (10).

6. A polytetrafluoroethylene sealing gasket according to claim 5, characterized in that: The lower end of the graphite composite plate (10) is in fit with the fixed seat (601).

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