A composite rubber seal

Abstract

A composite rubber seal includes a seal body and a connecting structure. The seal body is a strip-shaped rubber product with an "O"-shaped cross-section. The two ends of the seal body are fixedly connected by the connecting structure to form a sealing ring. The connecting structure includes an inner half and an outer half fixedly disposed on the seal body. The inner and outer halves, when fixedly connected, form an "O"-shaped strip structure with a diameter smaller than the seal body. An outer sleeve is wrapped around the inner and outer halves, and the inside of the outer sleeve is fixedly connected to the inner and outer halves. The two ends of the outer sleeve are fixedly connected to the two end faces of the seal body. This composite rubber seal, through the connecting structure at both ends, allows for the installation of large-size sealing rings without the need for propping, avoiding scratches from shaft edges and ensuring sealing performance. The connecting design also prevents installation torsion, ensuring a tight fit between the sealing surface and the sealing groove.

Description

Technical Field

[0001] This utility model relates to the field of rubber sealing technology, specifically to a composite rubber seal. Background Technology

[0002] Rubber seals play a crucial role in many industrial sectors, especially in scenarios where sealing is required to prevent fluid leakage or the intrusion of external impurities. The performance of the seals directly affects the reliability and stability of the entire system. Among them, sealing rings, as a common type of rubber seal, are widely used in the sealing fit of various shafts and holes.

[0003] For some larger sealing rings, installing them into the sealing grooves on the corresponding shaft presents numerous challenges. Because the diameter of the sealing ring needs to be smaller than the diameter of the shaft, the sealing ring must first be opened, and then it must be gradually fitted into the sealing groove starting from the shaft end. However, this installation process has significant drawbacks:

[0004] On the one hand, during the gradual assembly process, the sealing ring will come into contact with the edges and other parts on the shaft. Since the sealing ring material is relatively soft, these edges can easily scratch or abrade the sealing ring, causing damage to the surface of the sealing ring. Once the surface of the sealing ring is damaged, its sealing performance will be greatly reduced, and it will be unable to effectively prevent fluid leakage or the entry of external impurities, thereby affecting the normal operation of the entire equipment.

[0005] On the other hand, during the rolling installation of the sealing ring, due to the high operational difficulty, it is hard to ensure that the sealing ring is evenly and stably fitted onto the shaft. This may cause the sealing ring to twist after it is finally installed in the sealing groove. When the sealing ring twists, its sealing surface cannot fully fit with the sealing groove to form a uniform sealing pressure, thus creating gaps in the sealing part. These gaps will become channels for fluid leakage, making the sealing ring easy to damage during use, greatly shortening the service life of the sealing ring, and increasing the maintenance cost and downtime of the equipment.

[0006] Therefore, in order to solve the problems of large-size sealing rings being easily damaged during installation and easily torsion after installation, which leads to easy damage during use, it is of great practical significance to develop a new type of rubber seal. Summary of the Invention

[0007] To address the aforementioned issues, this invention provides a composite rubber seal. This composite rubber seal, through its connecting structure at both ends, allows for the installation of large-size sealing rings without the need for propping, preventing scratches and damage from shaft edges and ensuring sealing performance. The connecting design also prevents installation torsion, ensuring a tight fit between the sealing surface and the sealing groove.

[0008] The technical solution of this utility model is as follows:

[0009] A composite rubber seal includes a seal body and a connecting structure. The seal body is a strip-shaped rubber product with an "O"-shaped cross-section. The two ends of the seal body are fixedly connected by the connecting structure to form a sealing ring. The connecting structure includes an inner half and an outer half fixedly disposed on the seal body. The inner half and the outer half are fixedly connected to form an "O"-shaped strip structure with a diameter smaller than that of the seal body. An outer sleeve is wrapped around the inner half and the outer half. The inside of the outer sleeve is fixedly connected to the inner half and the outer half. The two ends of the outer sleeve are fixedly connected to the two end faces of the seal body.

[0010] The inner half and the outer half are provided with interlocking posts and holes.

[0011] The inner and outer halves are fixedly connected by adhesive.

[0012] The outer casing is fixedly connected to the inner half, the outer half, and the two end faces of the sealing body by adhesive.

[0013] The mating surfaces of the inner and outer halves are interlocking sawtooth structures.

[0014] The adhesive is a polyurethane adhesive or a modified epoxy resin adhesive.

[0015] The material of the sealing element body is any one of silicone rubber, fluororubber, nitrile rubber or polyurethane rubber.

[0016] The outer casing is made of the same material as the seal body.

[0017] There should be at least one pair of insertion posts and insertion holes.

[0018] The end of the insert is chamfered.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. This utility model discloses a composite rubber seal. The composite rubber seal is designed as a strip-shaped rubber product with an "O"-shaped cross-section. The two ends are fixedly connected by a connecting structure to form a sealing ring. This structure eliminates the need to first open the sealing ring and then fit it in, as is the case with traditional methods. This avoids the sealing ring from contacting the edges of the shaft and being scratched or damaged during the gradual fitting process, reducing the risk of damage to the sealing ring surface, ensuring sealing performance, effectively preventing fluid leakage or the entry of external impurities, and improving the reliability of the entire equipment operation.

[0021] 2. This utility model discloses a composite structure rubber seal. The connection structure design of this composite structure rubber seal helps to ensure the uniformity and stability of the sealing ring during installation, reducing the possibility of the sealing ring twisting during installation. The inner half and outer half are fixedly connected by a specific method (such as the matching of the insert and the hole, the meshing of the mating surfaces, the fixation with adhesive, etc.), and the outer sleeve further strengthens the overall structure, so that the sealing surface can completely fit with the sealing groove after the sealing ring is installed, forming a uniform sealing pressure, avoiding fluid leakage caused by gaps due to twisting, extending the service life of the sealing ring, and reducing equipment maintenance costs and downtime.

[0022] 3. This utility model discloses a composite rubber seal, in which the inner and outer halves are provided with interlocking posts and holes, increasing the stability and positioning accuracy of the connection; the mating surfaces adopt an interlocking sawtooth structure, further improving the firmness of the connection; the inner half, outer half, outer sleeve, and both ends of the seal body are fixedly connected by adhesives (such as polyurethane adhesives or modified epoxy resin adhesives), enhancing the adhesion between the components and ensuring that the entire composite rubber seal will not easily detach during use, thus guaranteeing the durability of the sealing effect.

[0023] 4. The present invention discloses a composite rubber seal. The seal body material of the composite rubber seal can be selected from any one of silicone rubber, fluororubber, nitrile rubber or polyurethane rubber, and the outer sleeve material can be the same as the seal body material. This flexibility in material selection allows the rubber seal to select the most suitable material according to different usage environments and working conditions to meet various sealing requirements and expand its application range. Attached Figure Description

[0024] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0025] In the attached diagram:

[0026] Figure 1 This is a schematic diagram of the structure of a composite rubber seal according to an embodiment of the present utility model;

[0027] Figure 2 for Figure 1 Sectional view of AA;

[0028] The components represented by the various reference numerals in the diagram are:

[0029] This utility model comprises: 100, sealing body; 110, connecting structure; 111, inner half; 1111, insert post; 112, outer half; 1121, insertion hole; 113, outer sleeve; and 114, adhesive. Detailed Implementation

[0030] like Figure 1 and Figure 2 As shown, the composite rubber seal includes a seal body 100 and a connecting structure 110.

[0031] The sealing body 100 is a strip-shaped rubber product with an "O"-shaped cross section. Its two ends are fixedly connected by the connecting structure 110 to form a sealing ring. This structure makes it easy to first fit the sealing body 100 into the sealing groove, and then connect the two ends through the connecting structure 110, avoiding the problems of traditional large-size sealing rings being easily damaged during installation and easily twisted after installation.

[0032] The sealing body 100 is made of any one of silicone rubber, fluororubber, nitrile rubber or polyurethane rubber, with an "O"-shaped strip structure in cross section. It has a certain degree of elasticity and flexibility, and can adapt to the shape of the sealing groove to play a sealing role.

[0033] The connecting structure 110 includes an inner half 111 and an outer half 112 that are respectively fixedly disposed on the sealing body 100. The connecting structure 110 and the sealing body 100 are integrally formed.

[0034] After the inner half 111 and the outer half 112 are fixedly connected, they form an "O"-shaped strip structure with a diameter smaller than that of the sealing body 100. The inner half 111 and the outer half 112 are provided with mutually cooperating inserts 1111 and insert holes 1121. At least one pair of inserts 1111 and insert holes 1121 are provided, and the end of the insert 1111 is chamfered to facilitate the insertion of the insert 1111 into the insert hole 1121, so as to achieve preliminary positioning and connection.

[0035] The mating surfaces of the inner half 111 and the outer half 112 can be fixedly connected by an adhesive 114, which is a polyurethane adhesive or a modified epoxy resin adhesive, to ensure a firm connection. At the same time, the mating surfaces of the inner half 111 and the outer half 112 can also be interlocking sawtooth structures to further enhance the stability of the connection.

[0036] The outer sleeve 113 wraps around the inner half 111 and the outer half 112, and its interior is fixedly connected to the inner half 111 and the outer half 112. The two ends of the outer sleeve 113 are fixedly connected to the two end faces of the sealing body 100, respectively. The fixed connection can be achieved by adhesive 114 (polyurethane adhesive or modified epoxy resin adhesive). The material of the outer sleeve 113 is the same as that of the sealing body 100 to ensure the consistency of overall performance.

[0037] During installation, the sealing body 100 is first fitted into the sealing groove. Since the sealing body 100 is a strip-shaped structure, a complete sealing ring is not yet formed at this stage. This avoids the need to spread and gradually fit the sealing ring as required during the installation of traditional large-size sealing rings, thereby reducing contact with edges and other parts on the shaft and lowering the risk of scratches and abrasions. Then, the inner half 111 and the outer half 112 are initially positioned and connected through the insert post 1111 and the insertion hole 1121, and the mating surfaces of the inner half 111 and the outer half 112 are firmly bonded together with adhesive 114. At the same time, the interlocking sawtooth structure enhances the connection stability. Finally, the outer sleeve 113 is wrapped around the inner half 111 and the outer half 112, and the outer sleeve 113 is fixedly connected to the inner half 111, the outer half 112 and the two end faces of the sealing body 100 by adhesive 114, so that the two ends of the sealing body 100 are connected to form a complete sealing ring. This installation method ensures the uniformity and stability of the sealing ring installation, avoids the torsion phenomenon after installation, ensures that the sealing surface can fully fit with the sealing groove, form a uniform sealing pressure, effectively prevent fluid leakage or external impurities from entering, and improve the service life of the sealing element and the operational stability of the equipment.

Claims

1. A rubber seal of a composite construction, characterised in that, The sealing body (100) includes a sealing element body (100) and a connecting structure (110). The sealing element body (100) is a strip-shaped rubber product with an "O"-shaped cross section. The two ends of the sealing element body (100) are fixedly connected by the connecting structure (110) to form a sealing ring. The connecting structure (110) includes an inner half (111) and an outer half (112) fixedly disposed on the sealing element body (100). The inner half (111) and the outer half (112) are fixedly connected to form an "O"-shaped strip structure with a diameter smaller than that of the sealing element body (100). An outer sleeve (113) is wrapped around the inner half (111) and the outer half (112). The inside of the outer sleeve (113) is fixedly connected to the inner half (111) and the outer half (112). The two ends of the outer sleeve (113) are fixedly connected to the two end faces of the sealing element body (100).

2. A composite structural rubber seal according to claim 1, wherein, The inner half (111) and the outer half (112) are provided with a mutually cooperating insert (1111) and a socket (1121).

3. A composite structural rubber seal according to claim 1, wherein, The mating surfaces of the inner half (111) and the outer half (112) are fixedly connected by an adhesive (114).

4. A composite structural rubber seal according to claim 1, wherein, The outer jacket (113) is fixedly connected to the inner half (111), the outer half (112), and the two end faces of the sealing body (100) by adhesive (114).

5. A composite structural rubber seal according to claim 1, wherein, The mating surfaces of the inner half (111) and the outer half (112) are interlocking sawtooth structures.

6. A composite rubber seal according to claim 3 or 4, wherein, The adhesive (114) is a polyurethane adhesive or a modified epoxy resin adhesive.

7. A composite structural rubber seal according to claim 1, wherein, The material of the sealing element body (100) is any one of silicone rubber, fluororubber, nitrile rubber or polyurethane rubber.

8. A composite structural rubber seal according to claim 7, wherein, The material of the outer casing (113) is the same as that of the sealing body (100).

9. A composite rubber seal according to claim 2, characterized in that, At least one pair of the insert (1111) and the socket (1121) are provided.

10. A composite structural rubber seal according to claim 2, wherein, The end of the insert (1111) is chamfered.

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