CN2550569Y - Shaft sealing grease seal - Google Patents

Abstract

The utility model relates to an axis sealing oil seal, comprising a circular metal frame, a rubber layer coated on the surface of the metal frame, a locking spring arranged outside the radial direction of the inner working surface, and a polytetrafluoroethylene thin layer pasted on the rubber layer of the inner working surface. The utility model has the advantages of reliable sealing performance, long service life, convenient arrangement, versatility and good interchangeability. The utility model can be widely used in the axis sealing of engines and various machines or analogues.

Description

The shaft sealing oil sealing

Technical field

The utility model relates to a kind of flexible oil seal ring of being with, and relates to a kind of shaft sealing oil sealing specifically.

Background technique

Be used for the oil sealing that motor, various machinery or analog use at present, having a circular metal Skeleton Table bread to cover rubber makes, come oil sealing by spring locking rubber, because the rubber mill loss rate is higher, therefore the working surface between oil sealing and the axle is very easy to wearing and tearing and causes oily leakage, cause motor, various machinery or analog often to change oil sealing, so not only waste fund, return use and maintenance man and caused numerous inconvenience.

Summary of the invention

Technical problem to be solved in the utility model is: overcome higher, the oil sealing short drawback in working life of rubber mill loss rate of existing oil sealing, provide that a kind of oil sealing working surface friction factor is low, the shaft sealing oil sealing of oil sealing long service life.

The technological scheme that its technical problem that solves the utility model adopts is: comprise circular metal frame, be coated on the rubber layer on metal frame surface, place the locking spring of inner working face radial outside, its structural feature is that the rubber layer gluing at inner working face is bonded with the polytetrafluoroethylene film layer.

After adopting said structure, because the friction factor of polytetrafluoroethylene film is than low tens times of the friction factor of various rubber, and the friction factor of polytetrafluoroethylene film reduces along with the increase of load, therefore the working life of having improved oil sealing.Experiment showed, this shaft sealing oil sealing long service life 6-8 times, be specially adapted to the shaft sealing of motor, various machinery or analog than common oil sealing.

Description of drawings

Fig. 1 is the radially sectional view of center line of the utility model;

Fig. 2 is the worm's eye view of Fig. 1;

Fig. 3 is the A portion amplification view of Fig. 1.

Embodiment

Fig. 1, Fig. 2, shaft sealing oil sealing shown in Figure 3, comprise circular metal frame 1, be coated on the rubber layer 2 on metal frame 1 surface, place the locking spring 4 of inner working face radial outside, rubber layer gluing at inner working face is bonded with polytetrafluoroethylene film layer 3, this polytetrafluoroethylene film layer 3 is to be connected together with described rubber layer is gluing in rubber layer thermoforming process, and its bonding strength can reach more than the 10.8Mpa, and degree of peeling off can reach 3.2KN/m.

Claims (1)

1. A kind of shaft sealing oil sealing, comprise circular metal frame (1), be coated on the rubber layer (2) on metal frame (1) surface, place the locking spring (4) of inner working face radial outside, it is characterized in that being bonded with polytetrafluoroethylene film layer (3) in the rubber layer gluing of inner working face.

Images