CN210566208U - Oil-resistant composite sealing ring - Google Patents
Oil-resistant composite sealing ring Download PDFInfo
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- CN210566208U CN210566208U CN201920893404.6U CN201920893404U CN210566208U CN 210566208 U CN210566208 U CN 210566208U CN 201920893404 U CN201920893404 U CN 201920893404U CN 210566208 U CN210566208 U CN 210566208U
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Abstract
The utility model discloses an oil-resistant composite sealing ring, which comprises an elastic ring arranged at a core part, wherein the inner part of the elastic ring is provided with a reinforced fiber strip, the outer ring of the elastic ring is wrapped with a locking fiber layer, a connecting fiber strip is arranged between the elastic ring and the locking fiber layer, and the outer ring of the locking fiber layer is wrapped with an impermeable layer; in the implementation of the utility model, the sealing performance is kept, and the mechanical performance can be improved; the elastic ring provides sufficient mechanical property for whole sealing ring, and tensile compressive capacity improves, and reinforcing fiber strip in the elastic ring further increases the whole tensile capacity of sealing ring, and lock fibrous layer and barrier layer adopt fluorubber, utilize its excellent chemical properties and stability, and oil resistance is splendid, and its and inside elastic ring combination avoids the not enough shortcoming of mechanical property of fluorubber itself simultaneously.
Description
Technical Field
The utility model relates to a sealing washer field, concretely relates to oil-resistant type composite seal circle.
Background
The rubber seal ring is an annular cover composed of one or more parts, is fixed on one ferrule or gasket of the bearing and is in contact with the other ferrule or gasket or forms a narrow labyrinth gap to prevent lubricating oil from leaking out and foreign matters from entering. The traditional oil-resistant sealing ring uses the fluorinated rubber, has excellent vacuum performance and chemical stability, but the compression permanent deformation of the fluorinated rubber at high temperature is large, and the sealing ring of the inner groove of the oil seal valve is installed after being compressed, so that the sealing is not tight after being installed.
In patent publication No. CN105482192A, an oil-resistant rubber ring material composition is disclosed, which comprises nitrile rubber, fluorosilicone rubber, acrylate rubber, potassium permanganate, calcium nitrate, sulfur, zinc chloride and magnesium chloride; the rubber composition comprises, by weight, 100 parts of nitrile rubber, 10-30 parts of fluorosilicone rubber, 20-50 parts of acrylate rubber, 3-15 parts of potassium permanganate, 5-20 parts of calcium nitrate, 1-5 parts of sulfur, 3-10 parts of zinc chloride and 3-10 parts of magnesium chloride. In the scheme, the oil resistance of the rubber is improved by fluorination and carbonization, but the problem of insufficient mechanical properties still cannot be solved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned problem that exists among the prior art, provide an oil-resistant type composite seal circle, not only keep sealing performance, can also improve mechanical properties simultaneously.
In order to realize the technical purpose, the technical effect is achieved, the utility model discloses a realize through following technical scheme:
the utility model provides an oil-resistant type composite seal circle, is including setting up in the elastic ring of core, and the elastic ring inside is provided with the reinforcing fiber strip, and the parcel of elastic ring outer lane has lock fibrous layer, is provided with the connecting fiber strip between elastic ring and the lock fibrous layer, and lock fibrous layer outer lane parcel has the barrier layer.
Further, the reinforcing fiber strips are a series of linear piles.
Furthermore, the length of the reinforced fiber strip is l, the longitudinal section of the elastic ring is circular, and the diameter of the elastic ring is r0Inner diameter of the elastic ring is R1Outer diameter of R2Then, then
The reinforced fiber strips are limited in the range of the sealing ring, and the contact of fiber burrs and the assembled sealing surface is avoided to cause a gap.
Further, the elastic ring is ethylene propylene rubber, and provides sufficient mechanical properties such as tensile and compressive properties.
Furthermore, both ends of the connecting fiber strip are in a hook shape and are fully connected with the elastic ring and the fiber locking layer.
Further, the fiber locking layer and the impermeable layer are made of fluorinated rubber, and sufficient oil resistance is provided.
A processing method of an oil-resistant composite sealing ring comprises the following steps,
step S1, uniformly placing the reinforced fiber strips in the cavity of the elastic ring die;
step S2, injecting liquid high-elasticity rubber into an elastic ring mold, and separating the mold after half-forming to obtain an elastic ring with an unsolidified surface;
step S3, uniformly spraying high-speed connecting fiber strips into the elastic ring with the surface in an unset state, wherein the connecting fiber strips are partially immersed into the elastic ring;
step S4, fully curing the elastic ring with the surface embedded with the connecting fiber strip;
step S5, immersing the fully cured elastic ring into liquid oil-resistant rubber to form a semi-formed fiber locking layer attached to the surface of the elastic ring;
and step S6, placing the product obtained in the step in a seal ring mold, and injecting liquid oil-resistant rubber to form an impermeable layer fused with the semi-formed lock fiber layer.
Further, in step S1, the elastic ring mold in the open-close state is placed in the sealing environment, and the reinforcing fiber strips are sprayed into the sealing environment, and are uniformly distributed in the elastic ring mold cavity after standing and falling.
The utility model discloses a income effect is:
not only maintains the sealing performance, but also can improve the mechanical performance; the elastic ring provides sufficient mechanical property for whole sealing ring, tensile compressive capacity improves, the whole tensile capacity of sealing ring is further increased to reinforcing fiber strip in the elastic ring, in order to increase the tightness of being connected of elastic ring and barrier layer, set up connecting fiber strip, but in order to avoid connecting the surface of the outstanding barrier layer of fiber strip, need set up the lock fibrous layer, utilize liquid surface tension and adsorption in the course of working, limit connecting fiber strip inside locking fibrous layer, fuse the barrier layer simultaneously at the unshaped lock fibrous layer surface in surface, form the resistant oil layer of a complete parcel elastic ring, lock fibrous layer and barrier layer adopt fluorinated rubber, utilize its excellent chemical properties and stability, oil resistance is splendid, simultaneously it combines with the elastic ring of inside, avoid the not enough shortcoming of mechanical property of fluorinated rubber itself.
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 cross-sectional view of the oil-resistant composite seal ring of the present invention;
fig. 2 is a schematic cross-sectional view of the oil-resistant composite seal ring of the present invention;
FIG. 3 is a schematic cross-sectional view of the distribution of the reinforcing fiber strips of the present invention in the elastic ring;
FIG. 4 is a schematic view showing a partial enlargement of the distribution profile of the reinforcing fiber strip of the present invention having the largest length in the elastic ring
Fig. 5 is a schematic flow chart of the processing method of the oil-resistant composite sealing ring of 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 an oil-resistant type composite seal circle, is including setting up in the elastic ring 1 of core, and 1 inside reinforcing fiber strip 2 that is provided with of elastic ring, and 1 outer lane parcel of elastic ring has lock fibrous layer 3, is provided with between elastic ring 1 and the lock fibrous layer 3 and connects fibrous strip 4, and 3 outer lane parcels of lock fibrous layer have barrier layer 5.
Further, the reinforcing fiber strips 2 are a series of linear piles.
Further, the length of the reinforced fiber strip 2 is l, the longitudinal section of the elastic ring 1 is circular, and the diameter is r0The inner diameter of the elastic ring 1 is R1Outer diameter of R2Then, then
The reinforcing fiber strips 2 are limited in the range of the sealing ring 1, and the contact of fiber burrs and the assembled sealing surface is avoided to cause a gap.
Further, the elastic ring 1 is ethylene propylene rubber, providing sufficient mechanical properties, such as tensile and compressive properties.
Furthermore, both ends of the connecting fiber strip 4 are in a hook shape and are fully connected with the elastic ring 1 and the fiber locking layer 3.
Further, the fiber locking layer 3 and the impermeable layer 5 are made of fluorinated rubber, and provide enough oil resistance.
A processing method of an oil-resistant composite sealing ring comprises the following steps,
step S1, uniformly placing the reinforced fiber strips 2 in the cavity of the elastic ring 1 die;
step S2, injecting liquid high-elasticity rubber into the elastic ring 1 mould, and separating the mould after half-forming to obtain the elastic ring 1 with the surface in an unset state;
step S3, uniformly spraying high-speed connecting fiber strips 4 into the elastic ring 1 with the surface in an unset state, and partially immersing the connecting fiber strips 4 into the elastic ring 1;
step S4, fully curing the elastic ring 1 with the connecting fiber strip 4 embedded on the surface;
step S5, immersing the fully cured elastic ring 1 into liquid oil-resistant rubber to form a semi-formed fiber locking layer 3 attached to the surface of the elastic ring 1;
step S6, placing the product obtained in the step in a seal ring mold, and injecting liquid oil-resistant rubber to form an impermeable layer 5 fused with the semi-formed lock fiber layer 3;
further, in the step S1, the elastic ring 1 mold in the open-close state is placed in the sealing environment, the reinforcing fiber strips 2 are sprayed into the sealing environment, and the reinforcing fiber strips are uniformly distributed in the elastic ring 1 mold cavity after the elastic ring 1 mold is placed still and falls down.
The first embodiment is as follows:
uniformly placing reinforcing fiber strips 2 in a cavity of a mold of an elastic ring 1, injecting liquid high-elasticity rubber into the mold of the elastic ring 1, separating the mold after half forming to obtain the elastic ring 1 with the surface in an unset state, uniformly spraying high-speed connecting fiber strips 4 into the elastic ring 1 with the surface in the unset state, immersing the connecting fiber strips 4 into the elastic ring 1, fully curing the elastic ring 1 with the connecting fiber strips 4 embedded on the surface, immersing the fully cured elastic ring 1 into liquid oil-resistant rubber to form a half-formed fiber locking layer 3 attached to the surface of the elastic ring 1, placing the product obtained in the step in a sealing ring mold, and injecting the liquid oil-resistant rubber to form an impermeable layer 5 fused with the half-formed fiber locking layer 3;
the elastic ring 1 provides enough mechanical performance for the whole sealing ring, the tensile and compressive capacity is improved, the reinforced fiber strip 2 in the elastic ring 1 further increases the overall tensile capacity of the sealing ring, in order to increase the connection tightness of the elastic ring 1 and the impermeable layer 5, the connecting fiber strip 4 is arranged, however, in order to avoid the connecting fiber strips 4 from protruding out of the surface of the impermeable layer 5, the fiber locking layer 3 is required to be arranged, the connecting fiber strips 4 are limited in the fiber locking layer 3 by utilizing the surface tension and the adsorption effect of the liquid in the processing process, meanwhile, the impermeable layer 5 is fused on the surface of the lock fiber layer 3 which is not formed on the surface to form an oil-resistant layer which completely wraps the elastic ring 1, the lock fiber layer 3 and the impermeable layer 5 adopt fluorinated rubber, and the oil-resistant layer has excellent oil resistance by utilizing the excellent chemical property and stability, meanwhile, the combination of the fluorinated rubber and the inner elastic ring 1 avoids the defect of insufficient mechanical property of the fluorinated rubber.
Example two:
placing an elastic ring 1 mould in an opening and closing state in a sealing ring environment, spraying reinforcing fiber strips 2 into the sealing ring, uniformly distributing the reinforcing fiber strips in a cavity of the elastic ring 1 mould after standing and falling, injecting liquid high-elasticity rubber into the elastic ring 1 mould, separating the mould after half forming to obtain the elastic ring 1 with the surface in an unsolidified state, uniformly spraying high-speed connecting fiber strips 4 into the elastic ring 1 with the surface in the unsolidified state, immersing part of the connecting fiber strips 4 into the elastic ring 1, fully curing the elastic ring 1 with the connecting fiber strips 4 embedded in the surface, immersing the fully cured elastic ring 1 into liquid oil-resistant rubber to form a half-formed locking fiber layer 3 attached to the surface of the elastic ring 1, placing the product obtained in the step into a sealing ring mould, and injecting the liquid oil-resistant rubber to form an impermeable layer 5 fused with the half-formed locking fiber layer 3;
the elastic ring 1 provides enough mechanical property for the whole sealing ring, the tensile and compressive capacity is improved, the reinforced fiber strip 2 in the elastic ring 1 further increases the whole tensile capacity of the sealing ring, the reinforced fiber strip 2 is series of straight line villi, the length of the reinforced fiber strip 2 is l, the longitudinal section of the elastic ring 1 is circular, and the diameter of the elastic ring is r0The inner diameter of the elastic ring 1 is R1Outer diameter of R2Then, then
The reinforced fiber strip 2 is limited in the range of the sealing ring 1, and the contact of fiber burrs and the assembled sealing surface is avoidedGap, in order to increase the tight degree of being connected of elastic ring 1 and barrier layer 5, set up connecting fiber strip 4, but avoid connecting fiber strip 4 outstanding barrier layer 5's surface, need set up lock fibrous layer 3, utilize liquid surface tension and adsorption in the course of working, with connecting fiber strip 4 restriction in lock fibrous layer 3 inside, it fuses barrier layer 5 on the 3 surfaces of lock fibrous layer that the surface is not fashioned simultaneously, form the resistant oil layer of a complete parcel elastic ring 1, lock fibrous layer 3 and barrier layer 5 adopt fluorinated rubber, utilize its excellent chemical property and stability, oil-proof performance is splendid, simultaneously it makes up with inside elastic ring 1, avoid the not enough shortcoming of mechanical properties of fluorinated rubber itself.
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 (6)
1. An oil-resistant composite sealing ring is characterized in that: the anti-seepage elastic ring is characterized by comprising an elastic ring (1) arranged at a core part, wherein a reinforced fiber strip (2) is arranged inside the elastic ring (1), a locking fiber layer (3) is wrapped on the outer ring of the elastic ring (1), a connecting fiber strip (4) is arranged between the elastic ring (1) and the locking fiber layer (3), and an anti-seepage layer (5) is wrapped on the outer ring of the locking fiber layer (3).
2. The oil-resistant composite seal ring according to claim 1, characterized in that: the reinforcing fiber strips (2) are series of linear villi.
3. The oil-resistant composite seal ring according to claim 2, characterized in that: the length of the reinforced fiber strip (2) is l, the longitudinal section of the elastic ring (1) is circular, and the diameter is r0The inner diameter of the elastic ring (1) is R1Outer diameter of R2Then, then
4. The oil-resistant composite seal ring according to claim 1, characterized in that: the elastic ring (1) is ethylene propylene rubber.
5. The oil-resistant composite seal ring according to claim 1, characterized in that: the two ends of the connecting fiber strip (4) are in a hook shape.
6. The oil-resistant composite seal ring according to claim 1, characterized in that: the fiber locking layer (3) and the impermeable layer (5) are made of fluorinated rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920893404.6U CN210566208U (en) | 2019-06-12 | 2019-06-12 | Oil-resistant composite sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920893404.6U CN210566208U (en) | 2019-06-12 | 2019-06-12 | Oil-resistant composite sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210566208U true CN210566208U (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920893404.6U Active CN210566208U (en) | 2019-06-12 | 2019-06-12 | Oil-resistant composite sealing ring |
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|---|---|
| CN (1) | CN210566208U (en) |
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- 2019-06-12 CN CN201920893404.6U patent/CN210566208U/en active Active
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