CN2116125U - Combined suspension sealing ring - Google Patents

Abstract

The utility model relates to a sealing device, the anti-squeezing compensating ring (3) of which is composed of two right angles which act the guiding and the centering functions. Under the protection of the protecting compensating rings on the two sides, a convex sealing ring (4) can conduct the compensation and sealing through the outward expandable force. The two ears on the lower part of the convex sealing ring (4) can act the statically sealing function. A suspending internal ring (5) frame is arranged on a metal support ring (6); when the high-pressure oil in an oil cylinder enters into a sealing cavity through a piston body (2), the suspending internal ring can be firstly contacted, and the high-pressure oil can be prevented from directly shocking the convex sealing ring. The metal support ring (6) is provided with an annular groove, and a high-pressure sealing cavity can be formed.

Description

Combined suspension sealing ring

The utility model relates to a kind of seal arrangement.

At present, the wiper seal problem of Oil, Water, Gas does not also solve completely, external building rubber compound circle, since superior materials, the machining accuracy height, on working life, embodied certain superiority, but owing to do not break through, leakage problems exists always also on mechanism.Domestic seal arrangement is still several as usual, though adopted the form of building rubber compound, sealing effect is not very good yet.

The purpose of this utility model is to provide a kind of improved seal arrangement, and it can play good seal action.

The purpose of this utility model is achieved in that the outer ring of seal ring is designed to convex, and it is made guide fence by two the 90 ° anti-extrusion compensated loops of right angle type and uses.High pressure compensation does not act directly on the cushion rubber, encircle in the sealing that suspends and act on, promote the convex outer shroud indirectly and compensate sealing, because the effect of interior ring, the frictional force (surface of contact is little) that has reduced outer shroud and barrel prevented the impact of high pressure oil to rubber ring, solved the sealing problem of high pressure, ultrahigh pressure.The sealing ring can be changed " male adapter " of unlike material according to applying working condition under the constant situation of each several part physical dimension, first kind of material adopts " the fine glue of T ", is applicable to high pressure, ultrahigh pressure; Second kind of material adopts " soft filling tetrafluoro ", is applicable to high temperature, chemical defence.More than two kinds of materials have same sealing effect, ne-leakage.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the sectional drawing of present embodiment.

(1) is cylinder barrel among the figure, and (2) are piston bodies, and (3) are anti-extrusion compensated loops, and (4) are male adapters, and (5) are rings in suspending, and (6) are the metal support rings.

Anti-extrusion compensated loop (3) is made up of two right angles, along with floating of male adapter, and is radial floating forever, can not squeeze to the both sides plug, has played guiding and centering effect.Male adapter (4) is under the protection of both sides protection compensated loop, and it is crowded that outwards tension compensates plug, avoided the damage of seal ring corner angle.Male adapter bottom two ears have played the effect of static seal, prevent that high pressure oil from entering self seepage in the Seal cage.Ring (5) adopts rigid tetrafluoro as material in suspending, there is the gap of 0.1～0.2mm it and male adapter (4) inboard, its frame is on metal support ring (6), when the oil circuit of oil cylinder inner high voltage oil on piston body (2) enters Seal cage, ring at first contact suspends prevents that high pressure oil from directly impacting male adapter.Ring promotion male adapter seals in suspending.The metal support ring has circular groove on (6), forms high-pressure sealing chamber.

Claims (1)

1. The utility model relates to a kind of seal arrangement, and this device is characterised in that: anti-extrusion compensated loop (3) is made up of two right angles, and it is along with male adapter (4) floats, and is radial floating forever, can not squeeze to the both sides plug, has played guiding and centering effect; Male adapter (4) is under the protection of both sides protection compensated loop, and outwards tension compensates sealing; Male adapter (4) bottom two ears have played the effect of static seal; There is the gap of 0.1～0.2mm ring (5) and male adapter (4) inboard in suspending, and its frame is on metal support ring (6); The metal support ring has circular groove on (6), forms high-pressure sealing chamber.

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