Novel stainless steel polytetrafluoroethylene oil seal

Abstract

The utility model relates to a novel stainless steel teflon oil seal which comprises a first framework, a teflon piece is fixed on one side of the first framework, a spring is installed on one side of the top of the teflon piece, a second framework is connected to one side of the first framework, rubber is arranged at the bottom of the teflon piece, and one side of the rubber extends into the second framework. A part of memory contraction force is actively abandoned by improving and adding the stainless steel spring, and the stable journal sticking force is increased by the spring, so that the service life of the stable journal sticking of the PTFE lip is multiplied.

Description

Technical Field

[0001] The utility model relates to the field of stainless steel polytetrafluoroethylene oil seals, in particular to a novel stainless steel polytetrafluoroethylene oil seal. Background Art

[0002] The traditional stainless steel PTFE oil seal is composed of an inner and outer frame, a PTFE sheet and a sealing gasket. The PTFE sheet is pulled into a bell mouth and the PTFE lip memory shrinks to hold the shaft.

[0003] The inventors have found that there are at least the following problems in the prior art that have not been solved:

[0004] PTFE sheets are easy to be shaped and lose their shaft holding force. Therefore, we propose a new type of stainless steel PTFE oil seal. The improved stainless steel spring actively gives up a part of the memory contraction force, and the spring increases the stable shaft holding force, so that the PTFE lip can stably hold the shaft and increase the service life by several times. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art, meet practical needs, and provide a novel stainless steel polytetrafluoroethylene oil seal to solve the technical problem that the current polytetrafluoroethylene sheets are easily shaped and lose the shaft holding force.

[0006] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: designing a new type of stainless steel PTFE oil seal, including a first frame, a PTFE sheet is fixed on one side of the first frame, and a spring is installed on one side of the top of the PTFE sheet.

[0007] Preferably, one side of the first skeleton is connected to a second skeleton.

[0008] Preferably, rubber is provided at the bottom of the polytetrafluoroethylene sheet, and a second skeleton extends into one side of the rubber.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The utility model actively gives up a part of the memory contraction force by improving and adding a stainless steel spring, and the spring increases the stable shaft holding force, so that the PTFE lip can stably hold the shaft and increase the service life by several times. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a cross-sectional view of the utility model;

[0012] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 3 It is a cross-sectional view of the utility model.

[0014] In the figure: 1. first frame; 2. second frame; 3. rubber; 4. polytetrafluoroethylene sheet; 5. spring. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Example 1: A new type of stainless steel PTFE oil seal, see Figures 1 to 3 , including a first skeleton 1, a polytetrafluoroethylene sheet 4 is fixed on one side of the first skeleton 1, and a spring 5 is installed on the top side of the polytetrafluoroethylene sheet 4. By improving and adding the stainless steel spring 5, a part of the memory contraction force is actively abandoned, and the spring 5 increases the stable shaft holding force, so that the polytetrafluoroethylene lip can stably hold the shaft and increase the service life by multiples.

[0017] For details, see Figures 1 to 3 , one side of the first skeleton 1 is connected to the second skeleton 2.

[0018] For further information, see Figures 1 to 3 A rubber 3 is arranged at the bottom of the polytetrafluoroethylene sheet 4, and a second frame 2 is extended into one side of the rubber 3.

[0019] When using a new type of stainless steel polytetrafluoroethylene oil seal, a part of the memory contraction force is actively abandoned by adding a stainless steel spring 5, and the spring 5 increases the stable shaft holding force, so that the polytetrafluoroethylene lip can stably hold the shaft and increase the service life by multiples.

[0020] In addition, the components designed in the present invention are all universal standard parts or components known to technical personnel in the field. Their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods. They can be fully implemented by technical personnel in the field, and there is no need to elaborate. The content protected by the present invention does not involve improvements to internal structures and methods.

[0021] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A novel stainless steel polytetrafluoroethylene oil seal, comprising a first frame (1), characterized in that: A polytetrafluoroethylene sheet (4) is fixed to one side of the first frame (1), and a spring (5) is installed on one side of the top of the polytetrafluoroethylene sheet (4).

2. A new type of stainless steel polytetrafluoroethylene oil seal as claimed in claim 1, characterized in that: One side of the first frame (1) is connected to a second frame (2).

3. A new type of stainless steel polytetrafluoroethylene oil seal as claimed in claim 1, characterized in that: The bottom of the polytetrafluoroethylene sheet (4) is provided with rubber (3).

4. A new type of stainless steel polytetrafluoroethylene oil seal as claimed in claim 3, characterized in that: A second frame (2) extends into one side of the rubber (3).

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