CN202883744U

CN202883744U - Dust-proof ring

Info

Publication number: CN202883744U
Application number: CN201220481302.1U
Authority: CN
Inventors: 杨彬; 王国强; 宋富强; 李海山; 李振合; 韩晓栋; 杨利芬
Original assignee: Xinxing Energy Equipment Co Ltd
Current assignee: Xinxing Energy Equipment Co Ltd
Priority date: 2012-09-19
Filing date: 2012-09-19
Publication date: 2013-04-17
Anticipated expiration: 2022-09-19

Abstract

The utility model relates to a dust-proof ring. The shaft section of the dust-proof ring body is K-shaped, the outer cylindrical surface of the dust-proof ring body is provided with a circular outer groove, an O-shaped radial seal ring is embedded inside the outer groove, one side of the dust-proof ring body is provided with a lip, the lip of the dust-proof ring body is provided with an inner groove, and an O-shaped pre-tensioning ring is embedded inside the inner groove. The dust-proof ring provided by the utility model has the advantages of wear resistance, good sealing property and long service life.

Description

A kind of dust ring

Technical field

The utility model relates to a kind of bearing seal dust guard, relates to a kind of polyfluortetraethyledust dust circle.

Background technique

Original wiper of rubber (rotary shaft sealing) is used for the equipment of working under the high dust difficulty environment such as the screw conveyor of carrying dust, spiral humidifier etc., because its hardness is low, poor flexibility, wear-resisting property is not enough, cause seal failure in the using process, dust enters bearing chamber, thereby causes bearing locking or damage, and the equipment that affects normally uses.

Summary of the invention

In order to overcome the shortcoming of prior art, the utility model provides a kind of dust ring, and it is wear-resisting, good seal performance, long service life.

The technical scheme in the invention for solving the technical problem is: the shaft section of dustproof circle body is " K " type, circular outside groove is arranged on the external cylindrical surface of dustproof circle body, setting-in radial seal O type circle in the groove of outside, one side of dustproof circle body has the lip limit, there is the inner edge groove on the lip limit of dustproof circle body, setting-in pretension O type circle in the inner edge groove.

The utlity model has following advantages: 1), by external cylindrical surface annular groove is arranged, cooperate radial seal O type circle to realize the floating seal of dust ring, the equipment that adapt to that the spindle span such as screw conveyor is large, the main shaft amount of deflection is large in the work is to the requirement of sealing.2), since shaft section be " K " type cross section, sealing lip limit elasticity is large, good sealing effect.3), adopt polytetrafluoroethylmaterial material, have self lubricity and extremely strong anti-corrosion capability, can adapt to the bad working environments environment.4), owing to being designed with axial O type circle, fitting with the machine spindle outer round surface in the sealing lip limit, forms sealing surface, stops that dust enters bearing support, prevents from damaging bearing, and elastic compensating is provided, the raising sealability is avoided causing early failue because of wearing and tearing.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the utility model plan view;

Fig. 2 is the A-A sectional view among the utility model Fig. 1;

Fig. 3 is the M place enlarged view among the utility model Fig. 2;

Fig. 4 is the practical state reference map of the utility model.

Embodiment

As shown in Figure 1, 2, the shaft section of dustproof circle body 1 is " K " type, circular outside groove 2 is arranged on the external cylindrical surface of dustproof circle body 1, outside groove 2 interior setting-in radial seal O type circles 5, one side of dustproof circle body 1 has lip limit 3, there is inner edge groove 4 on the lip limit 3 of dustproof circle body 1, inner edge groove 4 interior setting-in pretension O type circles 6.

There are described lip limit 3, inner edge groove 4 and pretension O type circle 6 in the both sides of described dustproof circle body 1.

The material of described dustproof circle body 1 is teflon.

As shown in Figure 3, be the practical state reference map of the utility model.Dustproof circle body 1 is contained in the groove of inner hole wall of sealing cover 9, compresses and get final product by bolt 7, gland 8.

Claims

1. dust ring, it is characterized in that: the shaft section of dustproof circle body (1) is " K " type, circular outside groove (2) is arranged on the external cylindrical surface of dustproof circle body (1), outside groove (2) interior setting-in radial seal O type circle (5), one side of dustproof circle body (1) has lip limit (3), there is inner edge groove (4) on the lip limit (3) of dustproof circle body (1), inner edge groove (4) interior setting-in pretension O type circle (6).

2. dust ring according to claim 1, it is characterized in that: there are described lip limit (3), inner edge groove (4) and pretension O type circle (6) in the both sides of described dustproof circle body (1).

3. dust ring according to claim 1, it is characterized in that: the material of described dustproof circle body (1) is teflon.