CN206130082U - Omega type composite seal spare - Google Patents

Abstract

Present high pressure oil seal can be direct to the violent impact of O type cast one -tenth when high -pressure fluid process, can directly wash out O type circle even. The utility model discloses an omega type composite seal spare of hydraulic pressure ready -packaged joint, including the quick -operation joint casing, the seal, the dabber, the dabber cavity, netted wall, the vibration absorption and noise reduction structure of the motorcycle engine is characterized in that, rectangular sealing ditch inslot is equipped with O type circle and the omega type supports the seal, O type circle sets up inside the rectangular sealing slot, O type circle outside parcel has the omega type to support the seal, the opening that the omega type supported the seal is towards O type circle, the omega type supports the seal and partly surrounds O type circle, the end that the omega type supported the seal is equipped with a pair of haptic element that designs dorsad, the end of haptic element supports on the upper and lower lateral wall in the rectangular sealing slot. This technical scheme's superior, the sealed effect of comprehensive sealing performance is obvious, tight, the no fluid dripping phenomenon of hydraulic pressure ready -packaged joint static sealing, and it is anticipated to reach the design completely, gains gratifying result.

Description

A kind of Ω types combination seal

Technical field

This utility model is related to a kind of Ω types combination seal, belongs to water-tight equipment.

Background technology

At present, sealing ring is the conventional sealing means of hydro-pneumatic field, and existing single seal form is more and more not yet The requirement of modern machines equipment is adapted to, and needs to research and develop a kind of new sealing means modern machines equipment to be adapted to sealing Require, to improve its sealing and reliability.

During working condition, seal is subject to ready-packaged joint " female end " axial thrust and slides inwards, exposes mandrel and core 4 oil leak holes for interpenetrating on axle, high-voltage oil liquid is in mandrel cavity by 4 oil leak holes for interpenetrating on mandrel, height Speed injection ready-packaged joint housing, now high-voltage oil liquid can directly to O-ring formation severe impact, and O-ring lacks protection, or even meeting O-ring is directly washed out, when mandrel returns to sealing station because lacking the sealing of O-ring, oil liquid leakage is directly resulted in, so as to lead Cause O-ring seal failure in resting state.

The content of the invention

For the problems referred to above, this utility model provides a kind of Ω types combination seal, can bear high-pressure oil flow well Impact, so as to effectively prevent sealing member because impact causes situation about coming off to occur, realize static sealing performance well. For achieving the above object, this utility model is designed with following manner is carried out：

A kind of Ω types combination seal, including snap joint housing, seal, mandrel, mandrel cavity, netted wall, which is special Point is that snap joint housing afterbody is provided with step, and the screw thread of connection oil pipeline is provided with outside step；In snap joint housing Wall is provided with seal, and on the inside of seal, snap joint casing center is fixedly connected with the junction of mandrel, seal and mandrel and sets There is back-moving spring, back-moving spring center is provided with the lead column for preventing displacement, and the sliding cavity that back-moving spring is placed on the inside of seal is multiple Position spring bottom end is fixed on sliding cavity bottom, and back-moving spring top passes through cross bar connecting mandrel top；

It is cavity structure inside mandrel, on the side wall of mandrel cavity, is radially provided with 4 netted walls for interpenetrating, netted wall Medial surface be arc, be provided between the netted wall of relative arc ellipse sealing globe valve, seal globe valve both sides arc top It coincide with the inner arc of netted wall；

Mandrel front end outer side is provided with rectangular seal groove, is provided with O-ring and Ω types support seal in rectangular seal groove, O-ring is arranged at rectangular seal trench interiors, is enclosed with Ω types and supports seal, Ω types to support opening for seal on the outside of O-ring Towards O-ring, Ω types support seal semi-surrounding O-ring, Ω types to support the end of seal to be provided with a pair for dorsad designing to mouth Haptic element, the end of haptic element are butted in the groove on the top and bottom sidewall of rectangular seal groove.

Preferably, the O-ring and netted wall are shifted to install.

Preferably, O-ring of the O-ring for NBR materials.

Preferably, the Ω types support seal to be integrated the colloid seal body of mold casting forming.

Preferably, the Ω types support the arc of circle of seal and O-ring shape to coincide.

Preferably, the Ω types support seal for the support seal of PTFE3 materials.

The beneficial effects of the utility model are：Compared with prior art, tandem type combination seal is bearing hydraulic oil height During pressure high speed impact, O-ring is hidden in inside bracing ring, and the pressure that high-pressure oil flow brings can be transferred to Ω types by O-ring On support seal, Ω types support the haptic element of seal that pressure is transferred to groove, and its haptic element and arc are surrounded and can be realized Buffering, increases frictional force while haptic element compensator or trimmer pressure, O-ring can bear the impact of high-pressure oil flow well, so as to have Effect avoids sealing member because impact causes situation about coming off to occur.

Description of the drawings

Fig. 1 is cross-sectional view of the present utility model；

Fig. 2 is the partial enlarged drawing that this utility model Ω types support seal；

Labelling in figure：1- snap joint housings；2- seals；3- mandrels；The netted walls of 4-；5-O type circles；6- Ω types support close Feng Ti；7- spherical seals.

Specific embodiment

Embodiment 1：

As shown in drawings, be this invention standstill seal state, O type circles（NBR materials）It is wrapped in bracing ring （PTFE3 materials）In form a seal combination body, component plays good sealing property；

During use, seal is subject to ready-packaged joint " female end " axial thrust and slides inwards, and on mandrel and mandrel, 4 mutually The netted wall for connecting exposes, and high-voltage oil liquid by netted wall, injects at a high speed ready-packaged joint housing, now O in mandrel cavity Type circle body bears the impact of hydraulic oil high-voltage high-speed, but because O-ring is wrapped in Ω types and supports inside seal, Ω types support close Pressure is transferred to groove by the haptic element of envelope body, and its haptic element and arc are surrounded and can realize buffering, haptic element compensator or trimmer pressure it is same When increase frictional force, O-ring can bear the impact of high-pressure oil flow well, so as to effectively prevent sealing member because impact is led The situation that cause comes off occurs.

After terminating, i.e., high-pressure oil flow halted state when, seal loses the oil flow pressure at ready-packaged joint " female end ", Resetted by suction function and back-moving spring, the spherical seal for being compressed resets, block netted wall and keep sealing；While by Diminish in pressure, O-ring volume becomes pushes Ω types support seal to seal greatly, plays sealing function.

Claims (6)

1. a kind of Ω types combination seal, including snap joint housing, seal, mandrel, mandrel cavity, netted wall, its feature It is that snap joint housing afterbody is provided with step, outside step, is provided with the screw thread of connection oil pipeline；Snap joint inner walls Seal is provided with, on the inside of seal, snap joint casing center is fixedly connected with the junction of mandrel, seal and mandrel and is provided with Back-moving spring, back-moving spring center are provided with the lead column for preventing displacement, and the sliding cavity that back-moving spring is placed on the inside of seal resets Spring bottom end is fixed on sliding cavity bottom, and back-moving spring top passes through cross bar connecting mandrel top；It is cavity structure inside mandrel, It is radially provided with 4 netted walls for interpenetrating on the side wall of mandrel cavity, the medial surface of netted wall is arc, relative arc net The sealing globe valve of ellipse is provided between shape wall, the inner arc on the both sides arc top and netted wall that seal globe valve coincide；Mandrel front end Outside is provided with rectangular seal groove, is provided with O-ring and Ω types support seal, O-ring to be arranged at rectangle in rectangular seal groove Inside sealed groove, Ω types are enclosed with the outside of O-ring and support seal, Ω types the opening of seal to be supported towards O-ring, Ω Type supports seal semi-surrounding O-ring, Ω types to support the end of seal to be provided with a pair of the haptic elements for dorsad designing, the end of haptic element It is butted in the groove on the top and bottom sidewall of rectangular seal groove.

2. a kind of Ω types combination seal according to claim 1, it is characterised in that the O-ring and the dislocation of netted wall Arrange.

3. a kind of Ω types combination seal according to claim 1, it is characterised in that O of the O-ring for NBR materials Type circle.

4. a kind of Ω types combination seal according to claim 1, it is characterised in that it is that the Ω types support seal The colloid seal body of body mold casting forming.

5. a kind of Ω types combination seal according to claim 1, it is characterised in that the Ω types support the circle of seal Shape arc is coincide with O-ring shape.

6. a kind of Ω types combination seal according to claim 1, it is characterised in that the Ω types support the seal to be The support seal of PTFE3 materials.