CN2658490Y

CN2658490Y - Fluoroplastic with lip ring-shape combined sealing element

Info

Publication number: CN2658490Y
Application number: CNU03277995XU
Authority: CN
Inventors: 胡明龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-22
Filing date: 2003-08-22
Publication date: 2004-11-24
Anticipated expiration: 2013-08-22

Abstract

The utility model relates to a composite broad-lip ring-type fluoroplastic seal component used for the mechanic seal on dyeing and finishing equipment, printing and dyeing pumps and chemical engineering pumps, pertains to a technical field of a seal device, and mainly integrates a rubber body, an external case and an internal case. The internal case inside is filled with a fluoroplastic lip. The seal component is characterized in that the lip is made into an annular groove. The utility model has a compact reasonable structure; has a self-lubricating property, and can normally operate under the condition of cutting off the water; can not be damaged because the seal component can conduct a peristaltic movement, the horn-shaped lip holds the shaft and pulsates along with the shaft; has a zero-leakage during the assembly under the inclined and eccentric condition; has the performances of the high pressure resistance, the high temperature resistance , the erosion resistance and the anti-ageing performance; has a lower frictional coefficient and a long service life.

Description

The wide lip annular of fluoroplastic combination seal

Technical field:

The utility model relates to the wide lip annular of a kind of fluoroplastic combination seal, is used for equipment for dyeing and finishing, Dyeing printing pump, and mechanical seal on the chemical pump belongs to the seal arrangement technical field.

Background technique:

Before the utility model was made, in prior art, the mechanical sealing element that uses on equipment for dyeing and finishing, Dyeing printing pump, chemical pump mainly was made up of rubber body, stainless steel casing, stainless steel inner casing and lip.On lip, adopt unidirectional worm structure.This kind structure has the following disadvantages:

1. in the course of the work because of cutting off the water supply, and produce high temperature wear and leak;

2. the stressed generation of beaming roller is beated at work, graphite annulus unbalance stress and breakage can cause leakage;

In assembly process since mechanical seal by plane sealing, because of working surface and gland out of plumb not on same shaft axis, cause off-centre, be easy to generate leakage;

4. in transportation process, because of producing vibration, it is just broken to cause graphite annulus not produce;

5. manufacture cost height time-consumingly during installation is taken a lot of work again.

Summary of the invention:

The purpose of this utility model is to overcome above-mentioned deficiency, thereby a kind of compact structure is provided, rationally; Have self lubricity, withstand voltage height, temperature tolerance, corrosion-resistant, friction factor is low, long service life, and can improve sealability, accomplishes the wide lip annular of the fluoroplastic combination seal of zero leakage.

Main solution of the present utility model is achieved in that

The utility model adopts rubber body 1, shell 2, inner casing 3 to make one, and filled polytetrafluoroethylene lip 4 in the shell 3 is characterized in that making circular groove 5 on lip 4 within it.

Compared with the prior art the utility model has the following advantages:

The utility model compact structure, rationally; Have self lubricity, under the situation of cutting off the water supply, can run well; Owing to can do the motion of wriggling property, horn-like lip is embraced on axle and is beated with axle, so can not damage; In assembly process, under the situation of inclination decentraction, can accomplish zero leakage; Withstand voltage height, temperature tolerance, corrosion-resistant, anti ageing property is good; Friction factor is low, long service life.

Description of drawings:

Fig. 1 is the utility model structural front view:

Embodiment:

Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:

The utility model adopts rubber body 1 (butadiene acrylonitrile rubber or fluorine rubber), stainless steel casing 2, stainless steel inner casing 3 to make one, and in housing 3 filled polytetrafluoroethylene lip 4, it is horn-like that its lip 4 is made wide lip.Make circular groove 5 on the horn-like lip 4 of wide lip, circular groove 5 can be made into the 2-9 bar.Owing to adopted the lip of horn-like many circular grooves of wide lip, can utilize by sealing liquid body or gas pressure to seal, thereby improve its sealability, its single procheilon structure can reach≤1Mpa (10kg/cm ²); A permission axle linear resonance surface velocity can be up to 20 meter per seconds; Operating temperature can reach-200 ℃-+260 ℃; Friction factor is low, with the friction factor of steel axle only be 0.02-0.04; Can save 1/2 cost for manufacturing enterprise working life up to more than 8000 hours.

Claims

1. the wide lip annular of a fluoroplastic combination seal adopts rubber body (1), shell (2), inner casing (3) to make one, and the interior filled polytetrafluoroethylene lip of shell (3) (4) is characterized in that making circular groove (5) on lip (4) within it.

2, the wide lip of fluoroplastic according to claim 1 annular combination seal is characterized in that described circular groove (5) makes the 2-9 bar.