CN106352096A - Floating seal - Google Patents

Abstract

The invention relates to a floating seal. The floating seal comprises a sealing groove, wherein a metal sealing ring is arranged inside the sealing groove, the metal sealing ring is provided with an O-shaped sealing ring towards the inside direction, and the O-shaped sealing ring props against a sealing surface to avoid the outward discharging of inside soil. The floating seal can be applied to pipeline construction equipment, so that soil cannot be discharged out from the inner side so as to avoid entering the device to avoid affecting the normal work, a radial end surface can be sealed, and the floating seal has the characteristics of small friction force, small contact area, good sealing effect, long service life, low cost and the like.

Description

A kind of floating seal

Technical field

The invention belongs to sealing structure technical field, it is related to a kind of floating seal.

Background technology

Existing sealing is all for avoiding avoiding dirt to enter inside device outside sealing, and small-bore pipeline underground is applied Construction equipment is then to be operated by middle output shaft due to soil, and therefore soil is shed by Inside To Outside, therefore Existing sealing is all to be applied to pipeline construction equipment.

Content of the invention

In order to overcome the disadvantages mentioned above of prior art, the present invention provides a kind of floating seal, and it can be applied to pipeline and apply So that soil will not be discharged in entrance device by inner side affects normal work on construction equipment, it is capable of radial end face Sealing, has that frictional force is little, contact area is little, the low feature of good sealing effect, life-span length, price.

The technical solution adopted for the present invention to solve the technical problems is: a kind of floating seal, including seal groove, in sealing It is provided with metallic packing ring, metallic packing ring is inwards provided with o type sealing ring on direction, and is withstood by o type sealing ring in groove Sealing surface avoids inner side soil to discharge.

The invention has the beneficial effects as follows: it can be applied on pipeline construction equipment so that soil will not be outside by inner side It is discharged into impact normal work in device, it is capable of radial end face sealing, have that frictional force is little, contact area is little, close Envelope effect is good, the low feature of life-span length, price.

Brief description

Fig. 1 is present configuration schematic diagram.

In figure: 1- seal groove, 2- metallic packing ring, 3-o type sealing ring, 4- sealing surface.

Specific embodiment

The present invention is further described with reference to the accompanying drawings and examples.

Referring to Fig. 1, a kind of floating seal, including seal groove 1, it is provided with metallic packing ring 2 in seal groove 1, metal is close Seal ring 2 is inwards provided with o type sealing ring 3 on direction, and withstands sealing surface 4 by o type sealing ring 3 and avoid inner side soil outwards to arrange Go out.

The invention has the beneficial effects as follows: it can be applied on pipeline construction equipment so that soil will not be outside by inner side It is discharged into impact normal work in device, it is capable of radial end face sealing, have that frictional force is little, contact area is little, close Envelope effect is good, the low feature of life-span length, price.

Claims (1)

1. a kind of floating seal, including seal groove, is characterized in that: is provided with metallic packing ring, metallic packing ring in seal groove Inwards being provided with o type sealing ring on direction, and withstand sealing surface by o type sealing ring avoids inner side soil to discharge.