A new type of ternary ethylene-propylene copolymer rubber elastic sealing gasket

Abstract

The utility model provides a novel EPDM elastic sealing gasket relates to the technical field of elastic sealing gasket, including first rubber sealing gasket and second rubber sealing gasket, and the outer end of first rubber sealing gasket and the outer end of second rubber sealing gasket are equipped with expansion rubber ring, and the outside of first rubber sealing gasket and the outside of second rubber sealing gasket are equipped with buffer outer washer, and the inboard of buffer outer washer is equipped with buffer block, and the inside of first rubber sealing gasket and the inside of second rubber sealing gasket are equipped with built -in chamber, and the built -in chamber inside first rubber sealing gasket is equipped with first magnet block, and the built -in chamber inside second rubber sealing gasket is equipped with second magnet block, adopts buffer outer washer, buffer block, elastic bar and spring, has realized the dispersion stress concentration area, has reduced local wear and tear, can absorb energy when the outside vibration or impact, reduces the stress concentration of sealing gasket, avoids the sealing failure caused by mechanical deformation, prolongs the service life significantly.

Description

Technical Field

[0001] This utility model relates to the field of elastic sealing gasket technology, and in particular to a novel EPDM copolymer rubber elastic sealing gasket. Background Technology

[0002] According to Chinese Patent No. CN208750002U, this utility model discloses an elastic rubber sealing gasket, including a rubber gasket and a frame. The rubber gasket is disposed in a through hole of the frame, and a convex ring is provided on the inner side of the through hole. The rubber gasket includes a left layer, a middle layer and a right layer. The middle layer is connected between the left layer and the right layer and forms an annular notch. The annular notch matches the convex ring. The front and rear ends of the frame are connected to fixing parts. An elastic band is connected between the fixing parts and the front and rear ends of the frame. A sleeve is provided on the fixing part, and a sleeve hole is provided in the sleeve.

[0003] The aforementioned comparative documents and existing technologies have the following technical problems: After long-term use, existing EPDM rubber sealing rings harden and become brittle due to the loss of plasticizer, resulting in dimensional shrinkage and decreased sealing performance. Furthermore, the sealing gasket cannot recover after long-term pressure, and mechanical movement causes wear and cracking at the edge of the sealing gasket, resulting in localized wear. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a novel EPDM copolymer rubber elastic sealing gasket.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a novel EPDM copolymer rubber elastic sealing gasket, comprising a first rubber sealing gasket and a second rubber sealing gasket, wherein an expansion rubber ring is provided at the outer end of both the first rubber sealing gasket and the outer end of both the second rubber sealing gasket, and a buffer outer gasket is provided on the outer side of both the first rubber sealing gasket and the outer side of both the second rubber sealing gasket, and a buffer block is provided on the inner side of the buffer outer gasket.

[0006] Preferably, both the first rubber sealing gasket and the second rubber sealing gasket have built-in cavities inside. The built-in cavity of the first rubber sealing gasket contains a first magnet block, and the built-in cavity of the second rubber sealing gasket contains a second magnet block.

[0007] Preferably, an elastic rod is provided on the outer side of the first magnet block and the outer side of the second magnet block inside the built-in cavity, and a spring is provided on the outer side of the elastic rod.

[0008] Preferably, the first rubber sealing gasket includes a first washer, the outer side of the first washer is provided with a first outer ring groove, the inner end of the first rubber sealing gasket is provided with an embedded ring, and the inner end of the embedded ring is provided with an embedded block.

[0009] Preferably, the second rubber sealing gasket includes a second washer, the outer side of the second washer is provided with a second outer ring groove, the inner end of the second rubber sealing gasket is provided with a connecting sleeve, the port of the connecting sleeve is provided with an embedding groove, and the top of the embedding groove is provided with a mating ring.

[0010] Preferably, buffer outer washers are provided inside the first outer ring groove and the second outer ring groove, and the embedded ring and the mating ring, the embedded ring and the connecting sleeve, and the embedded block and the embedded groove are all mutually mated.

[0011] Preferably, both the inner end of the embedding block and the inner end of the embedding groove are provided with built-in cavities, and the first rubber sealing gasket and the second rubber sealing gasket are connected to the embedding block through the embedding groove.

[0012] Beneficial effects

[0013] This invention employs a first rubber sealing gasket and a second rubber sealing gasket. Through the nested connection structure of the first and second rubber sealing gaskets, the embedded block and the embedded groove, and the embedded ring and the mating ring are engaged. The expanding rubber layer is an outer composite water-swellable rubber that expands and fills gaps when in contact with moisture, achieving a double sealing effect. Combined with the elastic deformation characteristics of the expanding rubber ring, multiple dynamic seals can be achieved under different pressure or temperature changes, effectively preventing media leakage. Furthermore, using EPDM copolymer rubber as the base material and combining it with the lightweight design of the built-in cavity, the overall weight is reduced while ensuring high weather resistance. It is suitable for fields with lightweight requirements and for high-requirement scenarios such as pipeline connections and industrial equipment.

[0014] In this invention, a first magnet block and a second magnet block are used. Through the magnetic attraction between the first magnet block and the second magnet block, and the guiding cooperation of the embedded structure, the snap-fit ​​between the embedded block and the embedded groove can realize the quick alignment and installation of the sealing gasket, reduce manual adjustment time, and improve assembly efficiency.

[0015] This invention employs an outer buffer washer, a buffer block, an elastic rod, and a spring. The outer buffer washer and the buffer block disperse stress concentration areas and reduce local wear. The linkage design of the built-in elastic rod and spring can absorb energy during external vibration or impact, reduce stress concentration on the sealing gasket, avoid sealing failure caused by mechanical deformation, and significantly extend service life. Attached Figure Description

[0016] Figure 1 This is an isometric view of the present invention;

[0017] Figure 2 This is a front view of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of this utility model;

[0019] Figure 4 This is a diagram showing the internal structure of the first rubber sealing gasket of this utility model;

[0020] Figure 5 This is a cross-sectional view of the present invention.

[0021] Legend:

[0022] 1. First rubber sealing gasket; 101. First washer; 102. First outer ring groove; 103. Embedded ring; 104. Embedded block; 2. Second rubber sealing gasket; 201. Second washer; 202. Second outer ring groove; 203. Connecting sleeve; 204. Embedded groove; 205. Mating ring; 3. Expansion rubber ring; 4. Buffer outer washer; 5. Buffer block; 6. Internal cavity; 7. First magnet block; 8. Second magnet block; 9. Elastic rod; 10. Spring. Detailed Implementation

[0023] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0024] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1:

[0026] Reference Figure 1-5This utility model provides a novel EPDM copolymer rubber elastic sealing gasket, comprising a first rubber sealing gasket 1 and a second rubber sealing gasket 2. The first rubber sealing gasket 1 includes a first washer 101, with a first outer annular groove 102 on its outer side and an embedded ring 103 at its inner end, with an embedded block 104 at its inner end. The second rubber sealing gasket 2 includes a second washer 201, with a second outer annular groove 202 on its outer side and a connecting sleeve 203 at its inner end. The port of the connecting sleeve 203 has an embedded groove 204. The top is provided with a mating ring 205. Expansion rubber rings 3 are provided at the outer ends of the first rubber sealing gasket 1 and the second rubber sealing gasket 2. Buffer outer gaskets 4 are provided on the outer sides of both the first and second rubber sealing gaskets 1 and 2. Buffer outer gaskets 4 are provided inside both the first and second outer ring grooves 102 and 202. The embedded ring 103 and mating ring 205, the embedded ring 103 and connecting sleeve 203, and the embedded block 104 and embedded groove 204 all cooperate with each other. A buffer block 5 is provided inside the buffer outer gasket 4. The interiors of both the first and second rubber sealing gaskets 1 and 2 are... The device has an internal cavity 6. Both the inner end of the embedded block 104 and the inner end of the embedded groove 204 have internal cavities 6. The first rubber sealing gasket 1 and the second rubber sealing gasket 2 are connected to the embedded block 104 via the embedded groove 204. A first magnet 7 is located inside the internal cavity 6 of the first rubber sealing gasket 1, and a second magnet 8 is located inside the internal cavity 6 of the second rubber sealing gasket 2. Elastic rods 9 are located on the outer sides of both the first magnet 7 and the second magnet 8 inside the internal cavity 6. Springs 10 are located on the outer sides of the elastic rods 9. The device utilizes the first rubber sealing gasket 1 and the second rubber sealing gasket 2, and the first rubber sealing gasket 1 connects to the second... The nested connection structure of the rubber sealing gasket 2, with the insertion block 104 and the insertion groove 204, and the insertion ring 103 and the mating ring 205, and the expansion rubber ring 3 being an outer composite water-swellable rubber that expands and fills gaps when in contact with moisture, achieves a double sealing effect. Combined with the elastic deformation characteristics of the expansion rubber ring 3, multiple dynamic seals can be achieved under different pressure or temperature changes, effectively preventing media leakage. Furthermore, using EPDM copolymer rubber as the base material, combined with the lightweight design of the built-in cavity 6, it reduces the overall weight while ensuring high weather resistance, making it suitable for lightweight applications and high-requirement scenarios such as pipeline connections and industrial equipment. Specific Implementation Example 2:

[0028] Reference Figure 1Through a segmented vulcanization process, a high cross-linking density layer (peroxide vulcanization) is formed on the surface of the sealing gasket, while the core adopts a sulfur vulcanization system, which takes into account both the surface aging resistance and the core compression resistance. A graphene-modified transition layer is added to the bonding interface between EPDM and the metal skeleton to improve the interfacial bonding strength, reduce the risk of edge peeling in dynamic sealing, and reduce the coefficient of friction.

[0029] In summary:

[0030] 1. By using a first rubber sealing gasket 1 and a second rubber sealing gasket 2, a nested connection structure is achieved through the first rubber sealing gasket 1 and the second rubber sealing gasket 2. When the expansion rubber ring 3 comes into contact with moisture, it expands and fills the gap, achieving a double sealing effect. Combined with the elastic deformation characteristics of the expansion rubber ring 3, multiple dynamic seals can be achieved under different pressure or temperature changes, effectively preventing media leakage. It is suitable for lightweight applications and high-requirement scenarios such as pipeline connections and industrial equipment.

[0031] 2. By using the first magnet block 7 and the second magnet block 8, the magnetic attraction between the first magnet block 7 and the second magnet block 8, as well as the guiding fit of the embedded structure and the snap-fit ​​between the embedded block 104 and the embedded groove 204, can realize the quick alignment and installation of the sealing gasket, reduce manual adjustment time, and improve assembly efficiency.

[0032] 3. By using a buffer outer washer 4, a buffer block 5, an elastic rod 9, and a spring 10, the stress concentration area is dispersed, local wear is reduced, energy is absorbed during external vibration or impact, stress concentration of the sealing gasket is reduced, sealing failure due to mechanical deformation is avoided, and service life is significantly extended.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A novel EPDM copolymer rubber elastic sealing gasket, comprising a first rubber sealing gasket (1) and a second rubber sealing gasket (2), characterized in that: An expansion rubber ring (3) is provided at the outer end of the first rubber sealing gasket (1) and the outer end of the second rubber sealing gasket (2). A buffer outer gasket (4) is provided on the outer side of the first rubber sealing gasket (1) and the outer side of the second rubber sealing gasket (2). A buffer block (5) is provided on the inner side of the buffer outer gasket (4).

2. The novel EPDM copolymer rubber elastic sealing gasket according to claim 1, characterized in that: Both the first rubber sealing gasket (1) and the second rubber sealing gasket (2) have an internal cavity (6). The internal cavity (6) of the first rubber sealing gasket (1) has a first magnet block (7), and the internal cavity (6) of the second rubber sealing gasket (2) has a second magnet block (8).

3. The novel EPDM copolymer rubber elastic sealing gasket according to claim 2, characterized in that: The first magnet block (7) and the second magnet block (8) inside the built-in cavity (6) are provided with elastic rods (9), and springs (10) are provided on the outside of the elastic rods (9).

4. The novel EPDM copolymer rubber elastic sealing gasket according to claim 1, characterized in that: The first rubber sealing gasket (1) includes a first washer (101), the outer side of the first washer (101) is provided with a first outer ring groove (102), the inner end of the first rubber sealing gasket (1) is provided with an embedded ring (103), and the inner end of the embedded ring (103) is provided with an embedded block (104).

5. The novel EPDM copolymer rubber elastic sealing gasket according to claim 1, characterized in that: The second rubber sealing gasket (2) includes a second washer (201), the outer side of the second washer (201) is provided with a second outer ring groove (202), the inner end of the second rubber sealing gasket (2) is provided with a connecting sleeve (203), the port of the connecting sleeve (203) is provided with an embedding groove (204), and the top of the embedding groove (204) is provided with a mating ring (205).

6. The novel EPDM copolymer rubber elastic sealing gasket according to claim 4, characterized in that: The first outer ring groove (102) and the second outer ring groove (202) are both provided with buffer outer gaskets (4). The embedded ring (103) and the mating ring (205), the embedded ring (103) and the connecting sleeve (203), and the embedded block (104) and the embedded groove (204) are all in mutual cooperation.

7. A novel EPDM copolymer rubber elastic sealing gasket according to claim 6, characterized in that: The inner end of the embedded block (104) and the inner end of the embedded groove (204) are both provided with built-in cavities (6). The first rubber sealing gasket (1) and the second rubber sealing gasket (2) are connected to the embedded block (104) through the embedded groove (204).

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