CN214248295U - Combined PTFE skeleton oil blanket - Google Patents
Combined PTFE skeleton oil blanket Download PDFInfo
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- CN214248295U CN214248295U CN202023089029.1U CN202023089029U CN214248295U CN 214248295 U CN214248295 U CN 214248295U CN 202023089029 U CN202023089029 U CN 202023089029U CN 214248295 U CN214248295 U CN 214248295U
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- framework
- sealing lip
- oil seal
- outer framework
- combined
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Abstract
The utility model discloses a combined PTFE framework oil seal, which comprises an outer framework, an inner framework and a seal lip; the sections of the outer framework and the inner framework are both L-shaped structures; the sealing lip comprises a fixed end and a free end, the fixed end is linear, and the free end is arc-shaped; the end part of the fixed end of the sealing lip is attached to the inner ring surface of the outer framework, and the radial end of the inner framework is attached to the fixed end of the sealing lip; and a rubber gasket is arranged between the fixed end of the sealing lip and the radial end of the outer framework. The combined PTFE framework oil seal provided by the utility model has the advantages that the rigidity of the inner and outer combined frameworks is enhanced, so that the oil seal cannot be easily deformed, and the inner framework can also block the pressure of part of sealing media on the oil seal, thereby reducing the deformation degree of the sealing lip; and a rubber gasket with elastic property is arranged between the outer framework and the sealing lip, so that the assembly is not easy to loosen.
Description
Technical Field
The utility model relates to a combined PTFE skeleton oil blanket belongs to sealing member technical field.
Background
In industrial production equipment, an oil seal is one of widely used sealing members, and the oil seal can isolate and enclose lubricating oil in a predetermined space and prevent the lubricating oil from leaking out of the predetermined space. Normally, the rotating member passes through a seal lip of an oil seal, and an inner peripheral surface of the seal lip of the oil seal contacts an outer peripheral surface of the rotating member to form a seal surface. Sliding friction is formed between the sealing lip and the rotating component, and a good sealing state is kept between the sealing lip of the oil seal and the rotating component.
The difference between the polytetrafluoroethylene oil seal and the common rubber rotary oil seal is that a polytetrafluoroethylene sheet is used for replacing a rubber lip, and when the existing polytetrafluoroethylene oil seal is installed, the polytetrafluoroethylene sealing lip is easy to deform, so that the sealing effect is influenced.
SUMMERY OF THE UTILITY MODEL
The purpose is as follows: in order to overcome the defects existing in the prior art, the utility model provides a combined PTFE framework oil seal.
The technical scheme is as follows: in order to solve the technical problem, the utility model discloses a technical scheme does:
a combined PTFE framework oil seal comprises an outer framework, an inner framework and a sealing lip; the sections of the outer framework and the inner framework are both L-shaped structures;
the sealing lip comprises a fixed end and a free end, the fixed end is linear, and the free end is arc-shaped; the end part of the fixed end of the sealing lip is attached to the inner ring surface of the outer framework, and the radial end of the inner framework is attached to the fixed end of the sealing lip;
and a rubber gasket is arranged between the fixed end of the sealing lip and the radial end of the outer framework.
Further, the fixed ends of the rubber gasket and the sealing lip and the radial end of the outer framework are in axial interference fit.
Further, the inner ring diameter of the rubber gasket is larger than that of the outer framework, and the inner ring diameter of the outer framework is larger than that of the sealing lip.
Furthermore, an oil return groove structure is arranged at the free end of the sealing lip.
Further, the free end of the sealing lip bends and extends towards the inner skeleton.
Furthermore, the axial tail end of the outer framework is bent inwards by 90 degrees and covers the outer part of the axial tail end of the inner framework.
Further, the inner framework and the outer framework are both made of carbon steel materials.
Further, the sealing lip is made of a PTFE material.
Has the advantages that: the combined PTFE framework oil seal provided by the utility model has the advantages that the rigidity of the inner and outer combined frameworks is enhanced, so that the oil seal cannot be easily deformed, and the inner framework can also block the pressure of part of sealing media on the oil seal, thereby reducing the deformation degree of the sealing lip; a rubber gasket with elastic property is arranged between the outer framework and the sealing lip, so that the assembly is not easy to loosen; the polytetrafluoroethylene sealing lip has excellent chemical resistance, high and low temperature resistance, self-lubricating property and friction resistance, and is suitable for occasions with extremely high rotating speed or needing to reduce the temperature of the lip.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
A combined PTFE framework oil seal is shown in figure 1 and comprises an outer framework 1, an inner framework 2 and a sealing lip 3. The cross-section of outer skeleton 1, inner frame 2 is L shape structure, the axial end of outer skeleton 1 is inwards buckled 90 to the cladding is outside at the axial end of inner frame 2. The inner framework 1 and the outer framework 2 are made of carbon steel materials, the rigidity of the oil seal is enhanced, the oil seal cannot be easily deformed, and the inner framework 2 can block part of pressure of a sealing medium on the oil seal, so that the deformation degree of the sealing lip 3 is reduced.
The sealing lip 3 comprises a fixed end 31 and a free end 32, the fixed end 31 is linear, the free end 32 is arc-shaped, and an oil return channel structure is arranged; the tip of the fixed end 31 of the seal lip 3 is attached to the inner ring surface of the outer framework 1, and the radial end of the inner framework 2 is attached to the fixed end 31 of the seal lip 3. The free end 32 of the sealing lip 3 extends in a curved manner in the direction of the inner frame 2. The sealing lip 3 is made of PTFE material and has excellent chemical resistance, high and low temperature resistance, self-lubricating property and friction resistance.
Set up rubber gasket 4 between the stiff end 31 of seal lip 3 and the radial end of exoskeleton 1, rubber gasket 4, the stiff end 31 of seal lip 3 and the radial end of exoskeleton 1 are axial interference fit, ensure that the sub-assembly is difficult not hard up.
The inner ring diameter of the rubber pad 4 is larger than that of the outer framework 1, and the inner ring diameter of the outer framework 1 is larger than that of the sealing lip 3.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (8)
1. The utility model provides a combined PTFE skeleton oil blanket which characterized in that: comprises an outer framework, an inner framework and a sealing lip; the sections of the outer framework and the inner framework are both L-shaped structures;
the sealing lip comprises a fixed end and a free end, the fixed end is linear, and the free end is arc-shaped; the end part of the fixed end of the sealing lip is attached to the inner ring surface of the outer framework, and the radial end of the inner framework is attached to the fixed end of the sealing lip;
and a rubber gasket is arranged between the fixed end of the sealing lip and the radial end of the outer framework.
2. The combined PTFE skeleton oil seal of claim 1, wherein: the fixed ends of the rubber gasket and the sealing lip and the radial end of the outer framework are in axial interference fit.
3. The combined PTFE framework oil seal of claim 2, wherein: the inner ring diameter of the rubber gasket is larger than that of the outer framework, and the inner ring diameter of the outer framework is larger than that of the sealing lip.
4. The combined PTFE skeleton oil seal of claim 1, wherein: and the free end of the sealing lip is provided with an oil return groove structure.
5. The combined PTFE framework oil seal of claim 4, wherein: the free end of the sealing lip bends and extends towards the inner framework.
6. The combined PTFE skeleton oil seal of claim 1, wherein: the axial tail end of the outer framework is bent inwards by 90 degrees and is wrapped outside the axial tail end of the inner framework.
7. The combined PTFE skeleton oil seal of claim 1, wherein: the inner skeleton and the outer skeleton are both made of carbon steel materials.
8. The combined PTFE skeleton oil seal of claim 1, wherein: the sealing lip is made of PTFE material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023089029.1U CN214248295U (en) | 2020-12-21 | 2020-12-21 | Combined PTFE skeleton oil blanket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023089029.1U CN214248295U (en) | 2020-12-21 | 2020-12-21 | Combined PTFE skeleton oil blanket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214248295U true CN214248295U (en) | 2021-09-21 |
Family
ID=77741139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023089029.1U Active CN214248295U (en) | 2020-12-21 | 2020-12-21 | Combined PTFE skeleton oil blanket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214248295U (en) |
-
2020
- 2020-12-21 CN CN202023089029.1U patent/CN214248295U/en active Active
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