CN210600187U

CN210600187U - Coated rubber sealing ring

Info

Publication number: CN210600187U
Application number: CN201920893442.1U
Authority: CN
Inventors: 朱成; 曾昭胜; 江勇; 姚秀全
Original assignee: Anhui Tuosheng Auto Parts Co ltd
Current assignee: Anhui Tuosheng Auto Parts Co ltd
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2020-05-22
Anticipated expiration: 2029-06-12

Abstract

The utility model discloses a film-coated rubber sealing ring, which comprises a ring body with a circular longitudinal section of a core part, wherein an annular strain cavity is arranged in the circumferential direction of the ring body, an elastic film is plated on the outer wall of the ring body and the opening of the strain cavity, a micro-airbag is filled in the strain cavity, the opening width of the strain cavity is smaller than the sectional area width of the inner cavity, and a polyvinylidene chloride layer is plated on the outer surface of the elastic film; the utility model discloses in implementing, annular chamber of meeting an emergency is processed out with circle body ring-cutting, and process the micro-gasbag, fill the micro-gasbag and meet an emergency the intracavity, take out the solidification after the circle body that will fill the micro-gasbag soaks liquid rubber, form the elastic membrane, produce the rubber sealing ring, when the inhomogeneous axial frictional force that the rubber sealing ring received, circle body and elastic membrane produce deformation, but because the micro-gasbag in the intracavity of meeting an emergency extrudees each other, fill the space of elastic membrane and sealed face, not only keep the elasticity of sealing ring, can also avoid the sealed not tight that the unbalanced atress leads to simultaneously.

Description

Coated rubber sealing ring

Technical Field

The utility model relates to a rubber seal field, concretely relates to coating film rubber seal.

Background

The rubber sealing ring is a soft sealing structure and plays a role in close fitting and sealing depending on the shape and elasticity of the rubber sealing ring. The rubber ring seal is divided into static seal and dynamic seal, the static seal does not generate friction in the working process, and a leakage gap is not generated after the static seal is properly installed. However, in dynamic sealing, such as a piston, under working conditions, the seal ring and the movable assembly slide in a radial direction, even if lubricating oil is sufficiently lubricated, axial friction force still occurs, and if the friction force of each part of the seal ring is inconsistent, a gap is generated between the seal ring and the sealed assembly.

The patent with the publication number of CN103627048B discloses a compression-resistant, wear-resistant and corrosion-resistant transformer sealing ring which is prepared from the following raw materials, by weight, 80-90 parts of nitrile rubber, 20-30 parts of carbon black, 35-55 parts of ceramic micropowder, 10-25 parts of silicon powder, 15-25 parts of manganese powder, 10-20 parts of high-strength reclaimed rubber, 10-15 parts of polytetrafluoroethylene, 10-15 parts of zinc oxide, 10-15 parts of coumarone resin, 7-11 parts of rubber oil, 5-9 parts of pottery clay, 5-8 parts of a vulcanization activator and 1-5 parts of a thermal-oxidative-aging inhibitor. According to the scheme, the nitrile rubber is used as a main raw material, the synthetic rubber is formed by the nitrile rubber, the high-strength reclaimed rubber and the coumarone resin, and the carbon black, the ceramic micro powder, the silicon powder, the manganese powder, the polytetrafluoroethylene, the zinc oxide, the pottery clay, the vulcanization activator and the thermal-oxidative-aging-resistant anti-aging agent are used as auxiliary materials, so that the tear resistance, the compression deformation resistance and the service life of the sealing ring can be effectively improved. Through the integrated ring cutting technology, the transformer sealing ring is effectively pressure-resistant, wear-resistant and corrosion-resistant, has no joint and seam, has good pressure resistance, wear resistance and fracture resistance, and has good sealing effect. Above-mentioned scheme uses the mode of improving the material to improve the compressive property of sealing ring under the dynamic seal operating mode, avoids the sealing ring and is produced the gap between the sealed subassembly through the hardness that improves the sealing ring material, but great material hardness, the installation of the sealing washer of not being convenient for.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the above-mentioned problem that exists among the prior art, provide a coating film rubber seal, not only keep the elasticity of sealing ring, can also avoid the sealed not tight that the unbalanced atress leads to simultaneously.

In order to realize the technical purpose, the technical effect is achieved, the utility model discloses a realize through following technical scheme:

a coated rubber sealing ring comprises a ring body with a circular longitudinal section of a core part, wherein an annular strain cavity is formed in the circumferential direction of the ring body, an elastic film is coated on the outer wall of the ring body and at the opening of the strain cavity, and a micro-airbag is filled in the strain cavity.

Furthermore, the strain cavities are uniformly arranged on the side wall of the ring body.

Further, the opening width of the strain cavity is smaller than the sectional area width of the inner cavity of the strain cavity.

Further, the diameter of the micro-balloons is less than 0.2mm, and the micro-balloons with smaller particle diameters can provide higher sealing degree.

Furthermore, the outer surface of the elastic film is plated with a polyvinylidene chloride layer.

A processing method of a coated rubber sealing ring comprises the following steps,

step S1, cutting the ring body into a ring-shaped strain cavity and processing the micro-airbag;

step S2, filling the micro-air bag into the strain cavity;

and step S3, immersing the ring body filled with the micro air bag into liquid rubber, taking out and solidifying to form the elastic membrane 3.

Further, the step S1 of processing the micro-balloons specifically includes the following steps,

step S1.1, compressing and freezing gas into powdery solid particles;

s1.2, accelerating the solid particles to impact a liquid rubber waterfall, wrapping the solid particles with the liquid rubber, increasing the temperature of the solid particles, reducing the pressure of the solid particles, and changing the solid particles into a gas state to expand;

s1.3, putting the rubber into liquid with the density less than or equal to that of solid rubber;

and S1.4, selecting the floating objects, namely the micro air bags, wherein the floating objects do not form solid particles wrapped by rubber, and only open rubber sheets with high density are left after gasification and sink to the bottom of the liquid.

Further, in step S1.1, the screening diameter is smaller than

The solid particles of (1).

Further, in step S2, the ring body and the micro-balloon are respectively placed in the charged particle atmosphere chambers with opposite electric properties, and are taken out after being sufficiently charged, and the micro-balloon and the inner wall of the strain chamber are respectively charged with opposite electric charges to generate an electric attraction force.

Further, the method also comprises the following steps,

and step S4, placing the ring body, the elastic membrane and the surface of the micro-airbag in a high-temperature atmosphere furnace, and slightly melting the surfaces of the ring body, the elastic membrane and the micro-airbag to enable the contact parts to be adhered.

The utility model discloses a income effect is:

the elasticity of the sealing ring is kept, and meanwhile, the untight sealing caused by unbalanced stress can be avoided; when the inhomogeneous axial frictional force that the rubber seal ring received, circle body and elastic membrane produce deformation, but because the mutual extrusion of the microballon of meeting an emergency intracavity, fill the elastic membrane and seal the space of face, not only keep the elasticity of sealing ring, can also avoid the sealed not tight that the atress is uneven to lead to simultaneously.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic transverse sectional view of a rubber seal ring according to the present invention;

FIG. 2 is a schematic longitudinal cross-sectional view of a ring body according to an embodiment of the present invention;

fig. 3 is a schematic longitudinal cross-sectional view of a first embodiment of the rubber sealing ring according to the present invention;

fig. 4 is a schematic longitudinal cross-sectional view of a second ring body according to an embodiment of the present invention;

fig. 5 is a schematic longitudinal cross-sectional view of a second embodiment of the rubber sealing ring according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-5, the utility model discloses a:

the utility model provides a coating film rubber seal, includes that core section longitudinal section is circular ring body 1, and annular strain chamber 2 has been seted up to ring body 1 circumference, and ring body 1 outer wall and strain chamber 2 opening part are plated and are equipped with elastic membrane 3, and strain chamber 2 is inside to be filled there is gasbag 4.

Preferably, the strain cavities 2 are uniformly opened on the side wall of the ring body 1.

Preferably, the width of the opening of the strain cavity 2 is smaller than the width of the cross-sectional area of the inner cavity thereof.

Preferably, the diameter of the microballoons 4 is less than 0.2mm, and microballoons with smaller particle diameters can provide higher tightness.

Preferably, the outer surface of the elastic membrane 3 is plated with a polyvinylidene chloride layer, and the polyvinylidene chloride material has a self-sealing effect.

step S1, the ring body 1 is cut into a ring-shaped strain cavity 2 and a micro-airbag 4 is processed;

step S2, filling the micro-airbag 4 into the strain cavity 2;

and step S3, immersing the ring body 1 filled with the micro-airbag 4 into liquid rubber, taking out and solidifying to form the elastic membrane 3.

Preferably, the processing of the micro-balloons 4 in step S1 comprises in particular the following steps,

step S1.1, compressing and freezing gas into powdery solid particles;

and S1.4, selecting the floating object, namely the micro air bag 4, wherein the floating object does not form solid particles wrapped by rubber, and only an open rubber sheet with high density is left after gasification and is sunk to the bottom of the liquid.

Preferably, in step S1.1, the screening diameter is less than

The solid particles of (1).

Preferably, in step S2, the ring body 1 and the micro-balloon 4 are placed in the charged particle atmosphere chambers of opposite electric properties, respectively, and taken out after being sufficiently charged, and the micro-balloon 4 and the inner wall of the strain chamber 2 are charged with opposite electric charges, respectively, to generate an electric attraction force.

Preferably, the method further comprises the following steps,

and step S4, placing the ring body 1, the elastic membrane 3 and the micro-airbag 4 in a high-temperature atmosphere furnace, slightly melting the surfaces of the ring body, the elastic membrane and the micro-airbag to enable the contact parts to be adhered.

The first embodiment is as follows:

as shown in the figures 1-3 of the drawings,

the ring body 1 is processed into an annular strain cavity 2 by circular cutting, a micro air bag 4 is processed, the micro air bag 4 is filled into the strain cavity 2, the ring body 1 filled with the micro air bag 4 is immersed into liquid rubber and then taken out for solidification, an elastic membrane 3 is formed, and a rubber sealing ring is generated;

when the inhomogeneous axial frictional force that the rubber seal ring received, ring body 1 and elastic membrane 3 produced deformation, but because the mutual extrusion of microballon 4 in the strain chamber 2, fill the space of elastic membrane 3 and sealed face, not only keep the elasticity of sealing ring, can also avoid the sealed not tight that the atress imbalance leads to simultaneously.

Example two:

as shown in figures 1, 4 and 5, a ring body 1 is processed into an annular strain cavity 2 by circular cutting, the opening width of the strain cavity 2 is smaller than the width of the cross section of the inner cavity, a micro air bag 4 is processed, gas is compressed and frozen into powder solid particles, the solid particles are accelerated to impact liquid rubber waterfall, the liquid rubber wraps the solid particles, the temperature and the pressure of the solid particles are increased to reduce and expand the solid particles, the solid particles enter liquid with the density less than or equal to that of the solid rubber, an upper floating object, namely the micro air bag 4 is selected, the diameter of the micro air bag 4 is smaller than 0.2mm, the ring body 1 and the micro air bag 4 are respectively arranged in charged particle atmosphere chambers with opposite electric properties, the ring body and the micro air bag 4 are taken out after being fully charged, electric charges with opposite electric properties are respectively arranged on the inner walls of the micro air bag 4 and the strain cavity 2 to generate electric attraction, the micro air, forming an elastic membrane 3, placing the elastic membrane in a high-temperature atmosphere furnace, slightly melting the surfaces of the ring body 1, the elastic membrane 3 and the micro air bag 4 to enable the contact parts to be adhered to generate a rubber sealing ring;

when the rubber sealing ring receives uneven axial friction force, the ring body 1 and the elastic membrane 3 deform, but because the micro air bags 4 in the strain cavity 2 extrude each other to fill the gap between the elastic membrane 3 and the sealing surface, because the opening width of the strain cavity 2 is smaller than the sectional area width of the inner cavity, the contact area between the elastic membrane 3 and the sealing friction surface is reduced, when the stress expansion width of the elastic membrane 3 covering the strain cavity 2 is larger than the opening width of the strain cavity 2, the elastic membrane 3 covered on the outer wall of the ring body 1 bears the friction force of most parts of the elastic membrane, the elastic membrane 3 covering the strain cavity 2 is prevented from being torn, the elasticity of the sealing ring is maintained, and meanwhile, the untight sealing caused by unbalanced stress can be avoided.

In the description herein, references to the terms "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A coated rubber sealing ring is characterized in that: the ring comprises a ring body (1) with a circular longitudinal section of a core part, wherein an annular strain cavity (2) is formed in the circumferential direction of the ring body (1), an elastic film (3) is plated at the opening of the outer wall of the ring body (1) and the strain cavity (2), and a micro air bag (4) is filled in the strain cavity (2).

2. The coated rubber seal ring according to claim 1, wherein: the strain cavities (2) are uniformly arranged on the side wall of the ring body (1).

3. The coated rubber seal ring according to claim 1, wherein: the opening width of the strain cavity (2) is smaller than the width of the cross section area of the inner cavity body thereof.

4. The coated rubber seal ring according to claim 1, wherein: the diameter of the micro air sac (4) is less than 0.2 mm.

5. The coated rubber seal ring according to claim 1, wherein: the outer surface of the elastic film (3) is plated with a polyvinylidene chloride layer.