Ultrahigh-pressure rubber pipe joint assembly
By designing a beveled structure with a wider outer surface and a narrower inner surface at the connection point of the rubber hose joint, and using a convex ring and hook groove fit, the slippage problem of the rubber hose joint during flange connection is solved, achieving a higher pressure rating and connection stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SONGJIANG MECHANICAL & ELECTRICAL GROUP (SHANGHAI) RUBBER PRODUCTS CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-05-26
AI Technical Summary
Existing rubber hose fittings are prone to slippage due to excessive pressure when connected to flanges, resulting in unstable connections and insufficient pressure ratings.
A beveled structure with a wider outer surface and a narrower inner surface was designed at the pipe joint connection. A beveled groove was also set on the flange. Combined with the matching design of the convex ring and hook groove, as well as the metal structure of the limiting groove and limiting protrusion, the connection stability was enhanced.
It significantly improves the pressure resistance and connection stability of rubber hose joints, increases the pressure rating, and ensures long-term stability and reliability.
Smart Images

Figure CN224283880U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of rubber hose joint technology, and in particular relates to an ultra-high pressure rubber hose joint assembly. Background Technology
[0002] A rubber hose fitting is a connector used to connect rubber hoses to other pipes or equipment. Its main function is to provide a reliable connection, ensuring the smooth flow of fluids or gases within the piping system, while also absorbing vibration and noise, reducing system vibration. These fittings are widely used in various industrial and civil fields, such as water treatment, chemical, petroleum, food processing, and agricultural irrigation. Due to their excellent performance and wide applicability, rubber hose fittings have become an indispensable and important component in pipeline connections.
[0003] Rubber hose joints are typically secured using flanges. However, existing rubber hoses, due to the horizontal surface of their connecting surfaces on both sides, are prone to slipping off the flanges when subjected to excessive pressure in the middle of the hose. Therefore, the pressure rating of current rubber hose structures is insufficient. Utility Model Content
[0004] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide an ultra-high pressure rubber hose joint assembly.
[0005] This utility model provides an ultra-high pressure rubber hose joint assembly, including a hose joint and a flange. The hose joint has connecting parts on both sides, and the connecting parts have a slope structure that is wider on the outside and narrower on the inside. The flange has a slope groove on one side that is adapted to the slope structure.
[0006] Furthermore, the pipe fitting includes a skeleton layer, an inner adhesive layer disposed within the skeleton layer, and an outer adhesive layer disposed outside the skeleton layer.
[0007] Furthermore, a raised ring is provided on the side of the flange near the slope structure, and a hook groove adapted to the raised ring is provided on the connecting part.
[0008] Furthermore, a limiting groove is provided in the slope groove, and a limiting protrusion adapted to the limiting groove is provided on the connecting part.
[0009] Furthermore, the limiting protrusion is made of metal.
[0010] Furthermore, the skeleton layer is made of glass fiber material.
[0011] Furthermore, the inner and outer rubber layers are made of rubber.
[0012] Furthermore, the flange is provided with several connection holes.
[0013] The technical solution provided by this utility model has at least the following technical effects:
[0014] The pipe fitting features a beveled structure that is wider on the outside and narrower on the inside, which matches the bevel groove on the flange. Thanks to the beveled structure's wide-on-the-outside-narrow-on-the-inside design, the connection can be firmly fitted between the flanges under pressure, significantly enhancing the pipe fitting's pressure resistance and effectively improving the overall pressure rating of the rubber hose fitting. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of the rubber tube assembly according to an embodiment of the present invention;
[0017] Figure 2 This is a cross-sectional view of the rubber tube structure assembly according to an embodiment of the present utility model;
[0018] Figure 3 This is a schematic diagram of the pipe connector in an embodiment of the present invention.
[0019] Explanation of main reference numerals: 1. Pipe fitting; 11. Skeleton layer; 12. Outer rubber layer; 13. Inner rubber layer; 2. Flange; 3. Connection part; 4. Sloping structure; 5. Raised ring; 6. Hook groove; 7. Limiting protrusion; 8. Limiting groove. Detailed Implementation
[0020] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.
[0021] like Figure 1 , Figure 2 as well as Figure 3As shown, this embodiment discloses an ultra-high pressure rubber hose joint 1 assembly, including a hose joint 1 and flanges 2, with the flanges 2 having [details omitted]. Both ends of the hose joint 1 are connected via flanges 2, and each end has a connecting portion 3, which is embedded between the two flanges 2. The connecting portion 3 is designed with a beveled structure 4 that is wider on the outside and narrower on the inside, while one side of the flange 2 is equipped with a matching beveled groove. Thanks to this unique bevel design, the hose joint 1 is less likely to detach from the flanges 2 under pressure compared to a traditional flat structure. The connecting portion 3 can be firmly fitted between the flanges 2 under pressure, thereby significantly improving the pressure resistance of the hose joint 1 and effectively increasing the pressure rating of the entire rubber hose joint 1.
[0022] To enhance the rigidity and strength of the pipe joint 1, the pipe joint 1 in this embodiment comprises a skeleton layer 11, an inner rubber layer 13 disposed within the skeleton layer 11, and an outer rubber layer 12 disposed outside the skeleton layer 11. The skeleton layer 11 may be made of glass fiber, but is not limited to this. Both the inner rubber layer 13 and the outer rubber layer 12 are made of rubber. By utilizing the high strength, high temperature resistance, and excellent chemical stability of glass fiber, the deficiencies of rubber materials in terms of mechanical properties, rigidity, and resistance to deformation are effectively compensated, thereby optimizing the overall performance of the pipe joint 1.
[0023] To further enhance the connection strength between the connecting part 3 and the flange 2, and to ensure the stability and reliability of the overall structure, a raised ring 5 is provided on the side of the flange 2 near the slope structure 4. Under the action of the raised ring 5, the connection between the connecting part 3 and the flange 2 is tighter and more secure. Specifically, the connecting part 3 is equipped with a hook groove 6 that matches the raised ring 5. This design of the hook groove 6 and the raised ring 5 effectively prevents the connecting part 3 from detaching from the flange 2 when subjected to external force, thereby significantly improving the connection stability between the connecting part 3 and the flange 2.
[0024] In addition, a limiting groove 8 is provided within the slope groove to further ensure the fixed position of the connecting part 3 between the flanges 2, preventing displacement or misalignment during use. To match the limiting groove 8, the connecting part 3 is specially designed and equipped with a limiting protrusion 7. This limiting protrusion 7 fits tightly with the limiting groove 8 and mutually restrains the protruding ring 5, thereby further enhancing the connection stability between the connecting part 3 and the flange 2.
[0025] This design effectively prevents the connector 3 from detaching from the flange 2, thereby improving the pressure rating of the entire rubber hose structure. The limiting protrusion 7 is made of metal. Due to the high strength and durability of metal, it can withstand significant pressure and external forces, ensuring the stability and reliability of the entire connection structure during long-term use. This not only improves the connection strength between the connector 3 and the flange 2 but also ensures the safety and stability of the entire rubber hose structure in practical applications.
[0026] 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 illustrative of the principles of this 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 protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An ultra-high pressure rubber hose joint assembly, comprising a hose joint (1) and a flange (2), characterized in that, The pipe joint (1) is provided with connecting parts (3) on both sides. The connecting parts (3) are provided with a slope structure (4) that is wider on the outside and narrower on the inside. The flange (2) is provided with a slope groove that is compatible with the slope structure (4) on one side.
2. The high-pressure rubber hose joint assembly according to claim 1, characterized in that, The pipe joint (1) includes a skeleton layer (11), an inner adhesive layer (13) disposed within the skeleton layer (11), and an outer adhesive layer (12) disposed outside the skeleton layer (11).
3. The high-pressure rubber hose joint assembly according to claim 1, characterized in that, The flange (2) is provided with a raised ring (5) on the side near the slope structure (4), and the connecting part (3) is provided with a hook groove (6) that matches the raised ring (5).
4. The high-pressure rubber hose joint assembly according to claim 1, characterized in that, The slope groove is provided with a limiting groove (8), and the connecting part (3) is provided with a limiting protrusion (7) that is adapted to the limiting groove (8).
5. The high-pressure rubber hose joint assembly according to claim 4, characterized in that, The limiting protrusion (7) is made of metal.
6. The high-pressure rubber hose joint assembly according to claim 2, characterized in that, The skeleton layer (11) is made of glass fiber.
7. The high-pressure rubber hose joint assembly according to claim 2, characterized in that, The inner rubber layer (13) and the outer rubber layer (12) are made of rubber.
8. The high-pressure rubber hose joint assembly according to claim 1, characterized in that, The flange (2) is provided with several connection holes.