CN200965065Y

CN200965065Y - Sealing ring

Info

Publication number: CN200965065Y
Application number: CNU2006201380615U
Authority: CN
Inventors: 杨建坤
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-11
Filing date: 2006-10-11
Publication date: 2007-10-24
Anticipated expiration: 2016-10-11

Abstract

The utility model discloses a sealing ring which has long service life, good sealing performance, low cost and easy disassembly and assembly. The utility model is an integrated structure which is suppressed by a metal framework, a spring, a butadiene-arylonitrile light rubber, and a polytetrafluoroethylene (PTFE). The utility model can not only be used in automobiles, but also can be widely used in engineering mechanical equipment of mines, metallurgy, petroleum, shipping, diesel locomotives, etc. The utility model has the advantages of long service life, good performances of anti-wear, anti-corrosion, and sealing, easy disassembly and assembly, and is a substitute of the prior sealing rings. The utility model has extremely wide application prospect.

Description

A kind of seal ring

Technical field:

The utility model relates to the seal ring that uses in a kind of machinery, particularly a kind of seal ring of installing and using in the contacting point of automobile gearbox and rotatingshaft, and it is formed by metal frame, spring, caulking gum compacting.

Background technique:

At present China produces has skeleton and exoskeletal various seal rings all to adopt nitrile rubber to suppress mostly to form, though they have played certain seal action in the use of various device, but poor sealing performance in use often occurs, reveal phenomenon serious, that the Sealing replacing is frequent, the rubber material of its reason seal ring adopts nitrile rubber to cause mostly.Though this material has softness, good springiness, advantage that followability is strong, its oil resistant, high temperature resistant, low temperature resistant, wear-resisting, acid-alkali-corrosive-resisting difference also are inevitable.Especially the seal ring that on automobile crane, uses, in case occur leakage phenomenon under steam, not only influence traffic and transportation, also can cause the damage of equipment, as the leakage phenomenon that in traffic way, is damaged, inevitably can bring beyond thought difficulty to the driver away from the maintenance place.This product must frequently be changed in equipment uses owing to working life is short, and not only the installing/dismounting trouble also can cause certain damage to rotatingshaft, and has increased the certain economic loss to the user.For overcoming above deficiency, Zhejiang Province Dario seals Co., Ltd's development and production a kind of seal ring that forms by polytetrafluoroethylmaterial material compacting, though this seal ring makes the defective of original seal ring obtain certain alleviation, its oil resistant, high temperature resistant, low temperature resistant, wear-resisting, acid-alkali-corrosive-resisting are improved, but also exist inevitable shortcoming, for example: the wide wall of the interior cover of the seal ring that uses tetrafluoroethylene to produce separately approaches its poor flexibility, followability is poor, can not the suit elastomeric spring, moving axis is if any slight beating, and just easier generation is revealed; Because of can not the suit elastomeric spring, a wearing or featuring stage armour internal diameter be done minor benefit and is supported the expansion lip with rotatingshaft and bring in oil sealing, because lip end and moving axis extruding force are bigger, so also bigger to the wearing and tearing of moving axis.Its interior cover is wide in addition, wall is thin, internal diameter is little, poor flexibility, brought certain difficulty to installation and removal, and cost is also than higher.

Purpose:

Main purpose of the present utility model is to overcome the deficiencies in the prior art and provides a kind of good springiness wear resistance strong, long service life, be easy to mount and dismount, cost is low, the seal ring of good seal performance.

Technological scheme:

For reaching the above object, the technical solution of the utility model is to increase one deck teflon at the lip place of seal ring, and forms integrative-structure with nitrile rubber; Seal ring lip place, teflon place is designed to ramp structure.

Effect:

The utility model compared with prior art has following advantage and effect:

1, owing to increased one deck teflon material at seal ring lip place, performances such as the oil resistant of seal ring, high temperature resistant, low temperature resistant, wear-resisting, acid-alkali-corrosive-resisting are greatly enhanced, strengthened and reduced cost working life.

2, because seal ring adopts is integral structure, the seal ring of score body structure is easier to installation and removal, and it is poor to have solved seal ring poor flexibility, followability that independent use tetrafluoroethylene produces, can not the suit elastomeric spring, moving axis is if any slight beating, with regard to the defective of easily revealing.

3, because seal ring lip place is designed to ramp structure, it has not only improved sealing effect, saved raw material, also overcome independent use tetrafluoroethylene wearing or featuring stage armour internal diameter and done minor benefit and support the expansion lip with rotatingshaft to bring in the extruding force that oil sealing produces excessive, the serious drawback of moving axis damage.

Description of drawings:

Fig. 1 is the cross-sectional view of seal ring.

Embodiment:

Cross-sectional view below in conjunction with accompanying drawing 1 seal ring is described further.Seal ring by metal frame 1, helical spring 2, nitrile rubber 3, form; Be to improve the working life of seal ring, be convenient to installation and removal and strengthen wear-resisting, acid-proof alkaline and increased one deck tetrafluoroethylene 4 at the lip place of seal ring, and formed integral structure with seal ring.In order to reduce the wearing and tearing to rotatingshaft, seal ring lip place in teflon place is designed to ramp structure.For reaching the structure that different usage requirement lip places also can be designed to flat face or arc surface.The utility model processing and using method and prior art are basic identical, just the rubber of two kinds of materials are lumped together machine shaping and get final product.Forming method is taked: punching press, and---banburying---pressing mold---heats the traditional approach of sulfuration.The installation of seal ring is also fairly simple, when seal ring preferably uses pushing of Hydraulic power tools balance when squeezing into axis hole.When being driven into hand hammer, the most handy special tool is knocked in uniformly.The utility model not only can use in automobile, also can be widely used in the engineering mechanical devices such as mine, metallurgy, oil, boats and ships, internal combustion locomotive.Its long service life, wear-resisting, be easy to the low alternative that will become prior art of installation and removal cost, application prospect is very wide.

Claims

1, a kind of seal ring, it is made of metal frame, spring, the light rubber of fourth cyanogen etc.; The lip place that it is characterized in that seal ring has increased one deck teflon, and forms integrative-structure with nitrile rubber.

2, seal ring as claimed in claim 1; It is characterized in that seal ring lip place, teflon place is designed to ramp structure.