O-shaped rubber ring with multi-layer composite structure

Abstract

The utility model discloses an O-shaped rubber ring with a multi-layer composite structure, which belongs to the technical field of rubber rings and comprises an outer layer, the outer layer sequentially comprises a secondary outer layer, a middle layer, a secondary inner layer, an inner layer and a metal ring from outside to inside, the outer layer is fixedly connected with the secondary outer layer, the secondary outer layer is clamped with the middle layer, and the metal ring is clamped with the secondary inner layer. The outer wall of the secondary inner layer is not connected with the middle layer and the inner layer, and the inner layer is fixedly connected with the metal ring; the damping assembly I is arranged between the secondary outer layer and the middle layer; the stability of the device is improved through layering cooperation and damping and buffering integration. Outer fluororubber and a heat insulation coating are resistant to corrosion and high temperature and block heat transfer. The secondary outer layer and the middle layer are clamped to prevent interlayer separation, and impact is efficiently dispersed in combination with a double-strand X-shaped woven damping ring; the inner layer further reduces vibration through the hollow circular ring array and the filling ring, and a metal ring strengthening structure is embedded, so that the O-shaped ring can still keep long-acting sealing performance under the high-strength working condition.

Description

TECHNICAL FIELD

[0001] The utility model relates to rubber ring technical field more specifically, relate to a multilayer composite structure rubber O type ring. BACKGROUND

[0002] O type ring is a kind of sealing element, its appearance is annular (similar letter "O"), usually used in static or dynamic sealing applications, the function of O type ring is through the compression contact between the mating surface, prevent the leakage of liquid, gas or solid particles, O type ring is usually made of elastic material such as rubber, can adapt to temperature change and mechanical load, maintain good sealing performance;Multilayer composite structure rubber O type ring is by combining the rubber material layer with different properties together, so that it provides excellent sealing performance in a variety of complex working environments.

[0003] The present disclosure discloses a kind of multilayer composite shockproof rubber rings with publication number CN213776180U, including body, the body includes outer ring and inner ring, outer ring is fixedly connected with inner ring one end, the length of inner ring is greater than outer ring, clamping groove is arranged between inner ring and outer ring, the side of the inner ring is fixedly connected with protruding block, the multilayer composite shockproof rubber ring, inner ring is clamped in the inside of connecting head, outer ring is clamped in the end of connecting head, by the cooperation of inner ring and outer ring, the inside of connecting head is sealed, by the cooperation of two layers of reinforcing layer, two layers of protective layer, two sides buffer layer, the internal structure of rubber ring is stable, it is favorable to the use of rubber ring, it is convenient for the sealing use of pipeline connection.

[0004] The above-mentioned device realizes dynamic sealing buffering by the cooperation of two layers of reinforcing layer, two layers of protective layer and two sides buffer layer, but its core defect lies in that the interlayer connectivity is insufficient: the physical and chemical properties of different materials (rubber matrix, fiber / metal skeleton, coating) differ greatly, resulting in that the interlayer interface is only bonded by simple vulcanization, the bonding strength is low, and interlayer peeling is prone to occur under high pressure or high frequency vibration; the existing design reduces friction and stress concentration by adopting a smooth transition structure between layers, but this design results in limited interlayer contact area and lack of mechanical interlocking effect, which cannot effectively transmit shear force and radial pressure, and in high pressure impact or reciprocating motion, interlayer sliding leads to sealing performance decay, especially medium leakage is prone to occur at medium permeation channel, which shortens the service life of O type ring. SUMMARY

[0005] 1. Technical problem to be solved

[0006] In view of the problems existing in the prior art, the utility model aims to provide a multilayer composite structure rubber O type ring, which can maintain stable sealing effect under high temperature and vibration environment, significantly prolonging service life and working stability.

[0007] 2. Technical scheme

[0008] To solve the above problems, the utility model adopts the following technical scheme.

[0009] A multilayer composite structure rubber O type ring, including outer layer, the outer layer from outside to inside includes secondary outer layer, intermediate layer, secondary inner layer, inner layer and metal ring in proper order, the outer layer is fixedly connected with secondary outer layer, the secondary outer layer is clamped with intermediate layer, the outer wall of secondary inner layer is not connected with intermediate layer and inner layer, the inner layer is fixedly connected with metal ring;

[0010] Damping assembly one, be arranged in the intermediate of secondary outer layer and intermediate layer;

[0011] Damping assembly two, be arranged in the intermediate of intermediate layer and inner layer;

[0012] Sealing assembly, be arranged in the inside of inner layer.

[0013] Further, damping assembly one includes multiple damping groups one, multiple damping groups one are designed with the axis of secondary outer layer as the center of circle and equidistance distribution, a damping group includes two damping rings and a damping ring, the damping ring is located in the intermediate of two damping rings.

[0014] Further, the damping assembly two includes multiple damping groups two, multiple damping groups are designed with the axis of secondary inner layer as the center of circle and equidistance distribution, the secondary inner layer is made of multiple hollow rings and is distributed in circle, and the adjacent two hollow rings are fixedly connected by filling ring, and multiple connecting strips are arranged on the both sides of filling ring.

[0015] Further, the secondary inner layer is made of two hollow rings and is inlaid, and the two hollow rings are fixedly connected by reinforcing rib.

[0016] Further, the sealing assembly includes multiple filling strips fixedly installed in the intermediate of adjacent two reinforcing ribs in the inner layer, and the inner layer is made of fluorosilicone rubber.

[0017] Further, the damping ring is made of double-strand coil and is cross-woven, and the cross section of damping ring is designed as X shape.

[0018] Further, the outer layer is made of fluorine rubber and is integrated, and the outer wall of outer layer is provided with heat insulation coating.

[0019] 3. Advantage

[0020] Compared with prior art, the utility model has the advantages of:

[0021] (1) This scheme realizes excellent stability through hierarchical cooperation and shock absorption and buffering integration: the outer layer fluororubber and the heat insulation coating are corrosion resistant, high temperature resistant and block heat transfer; the secondary outer layer and the middle layer are clamped to prevent separation between layers, combined with double X-shaped woven shock absorbing rings to efficiently disperse impact; the inner layer is further damped through the hollow circular ring array and the filling ring, and embedded with a metal ring to strengthen the structure, so that the O-shaped ring can still maintain long-term sealing performance under high pressure, high temperature and strong vibration working conditions, and the comprehensive performance is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a partial cross-sectional structure schematic view of the utility model;

[0023] Figure 2 It is a partial top cross-sectional structure schematic view of the utility model;

[0024] Figure 3 It is a Figure 2 enlarged structure schematic view of A;

[0025] Figure 4 It is a cross-sectional structure schematic view of the utility model;

[0026] Figure 5 It is an explosion structure schematic view of the cross-sectional view of the utility model.

[0027] Explanation of reference numerals in the drawing:

[0028] 1, outer layer; 11, secondary outer layer; 111, shock absorbing ring; 112, shock absorbing ring; 12, middle layer; 13, secondary inner layer; 131, filling ring; 132, connecting strip; 14, inner layer; 141, filling strip; 15, metal ring. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model; obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments; based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0030] In the description of the utility model, it needs to be explained that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawing, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the utility model, it is to explain, unless otherwise definite and limited, the term "installation", "set with", "sleeve set / interface", "connection" and so on, should do broad sense understanding, for example "connection", can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to specific circumstances.

[0032] Embodiment 1:

[0033] Please refer to Figures 1-5 A multilayer composite structure rubber O-shaped ring, including outer layer 1, the outer layer 1 from outside to inside includes secondary outer layer 11, intermediate layer 12, secondary inner layer 13, inner layer 14 and metal ring 15 in turn, outer layer 1 is fixedly connected with secondary outer layer 11, secondary outer layer 11 is clamped with intermediate layer 12, the outer wall of secondary inner layer 13 is not connected with intermediate layer 12 and inner layer 14, and inner layer 14 is fixedly connected with metal ring 15;

[0034] Damping assembly one, is arranged in the middle of secondary outer layer 11 and intermediate layer 12;

[0035] Damping assembly two, is arranged in the middle of intermediate layer 12 and inner layer 14;

[0036] Sealing assembly, is arranged in the inside of inner layer 14;Damping assembly one includes multiple damping groups one, and multiple damping groups one are designed with equal distance distribution centering on the axis of secondary outer layer 11, a damping group includes two damping rings 111 and a damping ring 112, and the damping ring 112 is located in the middle of the two damping rings 111;Damping assembly two includes multiple damping groups two, and multiple damping groups are designed with equal distance distribution centering on the axis of secondary inner layer 13, secondary inner layer 13 is made of multiple hollow rings and is distributed in a circle with equal distance, and the adjacent two hollow rings are fixedly connected by filling ring 131, and multiple connecting strips 132 are arranged on the two sides of filling ring 131;Secondary inner layer 13 is made of two hollow rings and is inlaid, and the two hollow rings are fixedly connected by reinforcing rib;Sealing assembly includes multiple filling strips 141 fixedly installed in the middle of adjacent two reinforcing ribs in inner layer 14, and inner layer 14 is made of fluorosilicone rubber;Damping ring 111 is made of double-strand coil and is cross-woven, and the cross section of damping ring 111 is designed as X shape;Outer layer 1 is made of fluorine rubber integration, and outer layer 1 is provided with heat insulation coating on the outer wall.

[0037] Working principle: through the outer layer 1 is the external protection layer of O type ring, adopt fluorine rubber to make, and the outer wall is coated with heat insulation coating; Can provide the external corrosion resistance, high temperature resistance and friction resistance; Fluorine rubber has good chemical corrosion resistance and high temperature resistance, so that the outer layer 1 can maintain sealing effect under extreme working conditions; The heat insulation coating can effectively reduce the influence of external heat source on the O type ring, thereby preventing heat transfer to the inner layer 14, ensuring the stability of the O type ring;

[0038] The secondary outer layer 11 and the intermediate layer 12 are fixedly connected through clamping design, which enlarges the contact area of the secondary outer layer 11 and the intermediate layer 12, effectively preventing the interlayer peeling phenomenon of the device under high pressure or high frequency vibration;

[0039] The connection of the secondary outer layer 11 and the outer layer 1 ensures that the multi-layer structure of the O type ring can effectively cooperate during the working process, preventing separation or damage due to friction or external force;

[0040] The damping assembly one is located between the secondary outer layer 11 and the intermediate layer 12, and is composed of a plurality of damping groups; Each damping group includes two damping rings 111 and one damping ring 112, the damping ring 111 is cross-woven by double-strand coils, and the cross section is designed in X shape; The design of the damping ring 111 can effectively disperse and absorb mechanical impact and vibration, reduce the burden of the system under high pressure or vibration environment, and maintain the long-term stability of the seal;

[0041] The damping assembly two is located between the intermediate layer 12 and the inner layer 13, and is composed of a plurality of damping groups two; These damping groups are distributed around the axis of the inner layer 13, the inner layer 13 is distributed at equal intervals in the circumferential direction by a plurality of hollow rings, and is fixedly connected by filling rings 131 and connecting strips 132; The design of the damping assembly two further enhances the damping effect by combining the hollow ring and the filling ring 131, reduces the vibration transmission between each layer, and ensures the stability of the material of the inner layer 13;

[0042] The inner layer 13 is fixedly connected with the metal ring 15, which increases the structural strength of the O type ring and ensures that the sealing function is maintained in high pressure and high temperature environment; The inner layer 13 is made of fluorosilicone rubber, which has excellent high temperature resistance, chemical corrosion resistance and elasticity, so as to adapt to more severe working conditions.

[0043] The above is only the preferred specific embodiment of the present application; however, the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and improvement concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A multi-layer composite structure rubber O-ring comprising an outer layer (1), characterized in that: The outer layer (1) comprises, from outside to inside, a secondary outer layer (11), an intermediate layer (12), a secondary inner layer (13), an inner layer (14) and a metal ring (15), the outer layer (1) is fixedly connected with the secondary outer layer (11), the secondary outer layer (11) is clamped with the intermediate layer (12), the outer wall of the secondary inner layer (13) is not connected with the intermediate layer (12) and the inner layer (14), and the inner layer (14) is fixedly connected with the metal ring (15); A first shock-absorbing assembly is arranged between the secondary outer layer (11) and the intermediate layer (12); A second shock-absorbing assembly is arranged between the intermediate layer (12) and the inner layer (14); A sealing assembly is arranged inside the inner layer (14).

2. A multi-layered composite structure rubber O-ring according to claim 1, characterized in that: The first shock-absorbing assembly comprises a plurality of groups of first shock-absorbing assemblies, the groups of first shock-absorbing assemblies are distributed at equal distances with the axis of the secondary outer layer (11) as the center, one group of first shock-absorbing assemblies comprises two shock-absorbing rings (111) and one shock-absorbing ring (112), and the shock-absorbing ring (112) is located between the two shock-absorbing rings (111).

3. A multi-layered composite structure rubber O-ring according to claim 1, wherein: The second shock-absorbing assembly comprises a plurality of groups of second shock-absorbing assemblies, the groups of second shock-absorbing assemblies are distributed at equal distances with the axis of the secondary inner layer (13) as the center, the secondary inner layer (13) is composed of a plurality of hollow rings which are distributed at equal distances in a circle, and the adjacent two hollow rings are fixedly connected through a filling ring (131), and a plurality of connecting strips (132) are arranged on both sides of the filling ring (131).

4. A multi-layered composite structure rubber O-ring as claimed in claim 1, wherein: The secondary inner layer (13) is composed of two hollow rings which are fixedly connected through a reinforcing rib.

5. A multi-layered composite structure rubber O-ring according to claim 4, wherein: The sealing assembly comprises a plurality of filling strips (141) which are fixedly arranged in the middle of the adjacent two reinforcing ribs in the inner layer (14), and the inner layer (14) is made of fluorosilicone rubber.

6. A multi-layered composite structure rubber O-ring as claimed in claim 2, wherein: The shock-absorbing ring (111) is composed of double-strand coils which are cross-woven, and the cross section of the shock-absorbing ring (111) is designed in an X shape.

7. A multi-layered composite structure rubber O-ring as claimed in claim 1, wherein: The outer layer (1) is integrally made of fluorine rubber, and a heat insulation coating is arranged on the outer wall of the outer layer (1).

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