Welding-free quick-connection high-pressure hose and preparation method

Abstract

The invention relates to the technical field of metal hoses, in particular to a welding-free quick-connection high-pressure hose and a preparation method. The high-pressure hose comprises a hose body, a connector and a connecting assembly. The connector is connected to the end of the hose body through the connecting assembly. The hose body comprises a corrugated pipe and a woven mesh, an annular groove is formed in the pipe wall of the corrugated pipe, and the woven mesh is connected to the radial outer side of the corrugated pipe in a sleeving mode; the connecting assembly comprises a clamping spring and a locking ring, the radial outer side of the corrugated pipe is sleeved with the clamping spring, the axial outer end of the clamping spring is clamped in a groove of the corrugated pipe, the axial outer end of the locking ring is connected with the connector, and the woven mesh is connected to the axial inner end of the clamping spring in a pressed mode through the axial inner end of the locking ring. The hose is assembled in the mode that the locking ring is connected with the connector in a pressing mode, the method is suitable for various construction environments, welding conditions are not needed, the requirement for welding experience is avoided, and quick connection and assembly can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal hoses, and in particular to a welding-free quick-connect high-pressure hose and a preparation method thereof. Background Art

[0002] In industrial and civil fields, threaded metal hoses are widely used in fluid transportation, mechanical connection and other occasions due to their good flexibility and pressure resistance.

[0003] The threaded metal hoses currently on the market usually have their joints fixed to the hoses by welding. Hoses with welded joints require professional welding equipment and technicians to operate, which not only increases construction costs, but also may produce harmful gases and sparks during the welding process, posing a safety hazard. In addition, once the welded joint is fixed, it is difficult to disassemble and replace, limiting the flexibility of the hose and the convenience of maintenance.

[0004] Therefore, the existing metal hose has the following technical problems:

[0005] 1. Restrictions on welding construction environment: Welding joints need to be carried out in a specific environment. For users who do not have welding conditions or lack welding experience, this limits the scope of application of the hose.

[0006] 2. Safety risks: Harmful gases and sparks may be generated during the welding process, posing a safety hazard.

[0007] 3. Inconvenient maintenance: Once the welding joint is fixed, it is difficult to disassemble and replace, which is not conducive to the maintenance and replacement of the hose.

[0008] 4. Efficiency issue: The construction process of welding joints takes a long time, affecting the overall construction efficiency. Summary of the invention

[0009] In view of the deficiencies in the prior art, an object of an embodiment of the present invention is to provide a welding-free quick-connect high-pressure hose.

[0010] In order to achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0011] A welding-free quick-connect high-pressure hose, comprising: a hose body, a joint and a connecting assembly, wherein the connecting assembly connects the joint to the end of the hose body; the hose body comprises a bellows and a woven mesh, the tube wall of the bellows has an annular groove, and the woven mesh is sleeved on the radial outer side of the bellows; the connecting assembly comprises a retaining spring and a locking ring, the retaining spring is sleeved on the radial outer side of the bellows, the axial outer end of the retaining spring is clamped in the groove of the bellows, the axial outer end of the locking ring is connected to the joint, and the axial inner end of the locking ring crimps the woven mesh to the axial inner end of the retaining spring.

[0012] Optionally, the end face of the axial inner end of the retaining spring is a first abutment surface, the first abutment surface is a conical surface, and the axial inner end diameter of the first abutment surface is smaller than the axial outer end diameter, the axial inner end of the locking ring has a boss protruding radially inward, the axial outer end face of the boss forms a second abutment surface, the second abutment surface is also a conical surface, the axial inner end diameter of the second abutment surface is smaller than the axial outer end diameter, and the end of the braided mesh is crimped between the first abutment surface of the retaining spring and the second abutment surface of the locking ring.

[0013] Optionally, the inner hole of the axial outer end of the locking ring is a connecting portion, and the connecting portion is installed at the axial inner end of the joint.

[0014] Optionally, the connection portion of the locking ring is a threaded hole, the axial inner end of the connector has an external thread, and the locking ring and the connector are connected by threads.

[0015] Optionally, the tube wall of the bellows has a plurality of coaxial annular grooves along the axial direction, and the axial inner end of the retaining ring is clamped in the first annular groove at the axial end of the bellows.

[0016] Optionally, the axial inner end of the clamping spring has a clamping platform, the clamping platform protrudes radially inwardly of the clamping spring, and the clamping platform is embedded in the first annular groove at the end of the bellows.

[0017] Optionally, the high-pressure hose further comprises a sealing gasket, which is located between the joint and the bellows, and when the locking ring is connected to the joint, the sealing gasket is squeezed onto the end face of the joint through the retaining ring and the bellows.

[0018] Optionally, the connector is a hexagonal connector.

[0019] Optionally, both ends of the hose body are connected with connectors via a connecting assembly.

[0020] The embodiment of the present invention further provides a method for preparing the welding-free quick-connect high-pressure hose as described above, comprising:

[0021] The braided mesh is put on the corrugated pipe;

[0022] The locking ring and the retaining spring are sleeved on the bellows, the axial outer end of the retaining spring is clamped in the annular groove of the bellows, and the end of the braided mesh sleeve is inserted into the gap between the locking ring and the retaining spring;

[0023] Install the sealing gasket and the joint at the end of the bellows, connect the locking ring to the joint, and squeeze the sealing gasket between the bellows and the joint to form a seal.

[0024] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0025] In the welding-free quick-connect high-pressure hose, an annular groove is provided on the wall of the bellows, which provides a basis for mechanical locking. The braided mesh is sleeved on the radially outer side of the bellows; the connection assembly includes a retaining ring and a locking ring, the retaining ring is sleeved on the radially outer side of the bellows, and the axial outer end of the retaining ring is clamped in the groove of the bellows to ensure the stability of the connection. The axial outer end of the locking ring is connected to the joint, and the axial inner end of the locking ring crimps the braided mesh to the axial inner end of the retaining ring. The assembly of the hose by crimping the joint with the locking ring is suitable for a variety of construction environments, does not require welding conditions, reduces safety risks, and does not require welding experience, and can be quickly connected and assembled. Compared with the existing connection structure, this structure uses fewer accessories, is simple to match, has lower costs, and has higher assembly efficiency, and can withstand high pressures of more than 50 kilograms.

[0026] Advantages of additional aspects of the present invention will be given in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In addition, the spacing or size between each other is exaggerated to show the position of each part, and the schematic diagram is only used for illustration.

[0028] Figure 1 is a cross-sectional view of a hose provided by an embodiment of the present invention;

[0029] Figure 2 is a side view of a hose provided by an embodiment of the present invention;

[0030] Figure 3 is an enlarged view of the end of a hose provided by an embodiment of the present invention;

[0031] Figure 4 is a disassembly diagram of a connection assembly provided in an embodiment of the present invention;

[0032] In the figure: 1, hose body; 11, bellows; 12, braided mesh; 2, connecting assembly; 21, clip spring; 211, first abutting surface; 212, clamping platform; 22, locking ring; 221, second abutting surface; 222, connecting part; 3, sealing pad; 4, joint; DETAILED DESCRIPTION

[0033] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] Example 1

[0035] In order to solve the technical problems mentioned in the background technology, this embodiment proposes a welding-free quick-connect high-pressure hose, such as Figure 1 , Figure 2 As shown, it comprises a hose body 1 , a connector 4 and a connecting assembly 2 , wherein the connecting assembly 2 connects the connector 4 to the end of the hose body 1 .

[0036] like Figure 3 As shown, the hose body 1 includes a bellows 11 and a braided mesh 12. The bellows 11 has an annular groove on its wall, which provides a basis for mechanical locking. The braided mesh 12 is sleeved on the radially outer side of the bellows 11; the connection assembly 2 includes a retaining ring 21 and a locking ring 22. The retaining ring 21 is sleeved on the radially outer side of the bellows 11, and the axial outer end of the retaining ring 21 is clamped in the groove of the bellows 11 to ensure the stability of the connection. The axial outer end of the locking ring 22 is connected to the connector 4, and the axial inner end of the locking ring 22 presses the braided mesh 12 onto the axial inner end of the retaining ring 21.

[0037] The welding-free quick-connect high-pressure hose uses a locking ring 22 to crimp a connector 4 to assemble the hose. It is suitable for a variety of construction environments, does not require welding conditions, reduces safety risks, and does not require welding experience. It can be quickly connected and assembled. Compared with the existing connection structure, this structure uses fewer accessories, is simple to match, has lower costs, and has higher assembly efficiency, and can withstand a high pressure of more than 50 kg.

[0038] like Figure 4 As shown, in this embodiment, the end face of the axial inner end of the retaining ring 21 is a first abutment surface 211, the first abutment surface 211 is a conical surface, and the axial inner end diameter of the first abutment surface 211 is smaller than the axial outer end diameter, the axial inner end of the locking ring 22 has a boss protruding radially inward, the axial outer end face of the boss forms a second abutment surface 221, the second abutment surface 221 is also a conical surface, the axial inner end diameter of the second abutment surface 221 is smaller than the axial outer end diameter, and the end of the braided mesh 12 is crimped between the first abutment surface 211 of the retaining ring 21 and the second abutment surface 221 of the locking ring 22.

[0039] The two conical abutment surfaces form a match, which can effectively transmit the pressure to the clamping spring 21, thereby enhancing the tightening effect of the entire connection. In addition, the end of the braided mesh 12 is crimped between the two abutment surfaces, making the connection between the braided mesh 12 and the bellows 11 more secure and preventing loosening under high pressure. This structure not only improves the strength of the connection, but also effectively avoids failure caused by high pressure.

[0040] The inner hole of the axial outer end of the locking ring 22 is a connecting portion 222, and the connecting portion 222 is installed at the axial inner end of the connector 4. The size and shape of the connecting portion 222 are precisely designed to ensure smooth engagement during assembly. The connecting portion 222 of the locking ring 22 matches the axial inner end of the connector 4, making the connection process easier. Through this design, the installation and removal of the hose becomes more efficient, and the user can complete the operation without complex tools, thereby reducing the reliance on professional skills and adapting to the needs of various usage environments.

[0041] Specifically, in this embodiment, the connection portion 222 of the locking ring 22 is a threaded hole, and the axial inner end of the joint 4 is provided with an external thread. This threaded connection method not only provides good mechanical strength, but also forms a tight connection during assembly to prevent leakage under high pressure conditions. This method simplifies the process required for traditional welding connection, greatly reducing the overall assembly time.

[0042] In this embodiment, a plurality of coaxial annular grooves are designed on the wall of the bellows 11. These grooves not only provide a plurality of optional positions for the clamping of the clamping spring 21, but also can flexibly adjust the fixing position of the clamping spring 21 under different working conditions. The axial inner end of the clamping spring 21 is embedded in the first annular groove through the clamping platform 212 to ensure the fixing effect under high pressure conditions.

[0043] In this embodiment, a clamping platform 212 is provided at the axial inner end of the clamping spring 21, and the clamping platform 212 protrudes radially inward to ensure a more stable connection with the bellows 11. The clamping platform 212 is embedded in the first annular groove at the end of the bellows 11, making the connection more secure, reducing the risk of loosening due to vibration or pressure changes, and ensuring safety in high-pressure use occasions.

[0044] In this embodiment, the high-pressure hose further includes a sealing pad 3, which is located between the connector 4 and the bellows 11. The design of the sealing pad 3 can effectively prevent fluid leakage and ensure the sealing of the hose under high pressure. When the locking ring 22 is connected to the connector 4, the sealing pad 3 is squeezed onto the end face of the connector 4 through the retaining ring 21 and the bellows 11, forming a reliable sealing effect.

[0045] The connector 4 can have various forms, such as the common hexagonal connector 4. The hexagonal structure provides better gripping performance and is convenient for operation in a small space. The use of the hexagonal connector 4 complies with industrial standards and is convenient for universal connection in various types of equipment.

[0046] like Figure 1 As shown, both ends of the hose body 1 are connected to connectors 4 through connecting components 2. This design allows the hose to be flexibly adapted to different usage environments and can easily achieve multi-point connection to meet the high-pressure fluid transmission requirements in complex systems. By providing connectors 4 at both ends, users can choose the appropriate installation method according to actual needs, thereby improving the flexibility and operability of the system.

[0047] Example 2

[0048] This embodiment proposes a method for preparing the welding-free quick-connect high-pressure hose described in Embodiment 1:

[0049] According to the different sizes of hoses, fittings are designed at both ends. The braided mesh 12 is put on the bellows 11; the locking ring 22 and the retaining ring 21 are put on the bellows 11 to ensure that the axial outer end of the retaining ring 21 is stuck in the first annular groove of the bellows 11. The end of the braided mesh 12 is inserted into the gap between the locking ring 22 and the retaining ring 21. After the sealing gasket 3 and the connector 4 are installed, the sealing gasket 3 is squeezed to form a seal through the connection between the locking ring 22 and the connector 4, and the production is completed. The process of this preparation method is simple and efficient, which ensures the safety and reliability of high-pressure use and is suitable for large-scale production applications.

[0050] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A welding-free quick-connect high-pressure hose, characterized in that: include: A hose body, a connector and a connection assembly, wherein the connection assembly connects the connector to the end of the hose body; The hose body comprises a corrugated tube and a braided net, the tube wall of the corrugated tube is provided with an annular groove, and the braided net is sleeved on the radial outer side of the corrugated tube; The connecting assembly includes a retaining ring and a locking ring. The retaining ring is sleeved on the radial outer side of the bellows, the axial outer end of the retaining ring is clamped in the groove of the bellows, the axial outer end of the locking ring is connected to the joint, and the axial inner end of the locking ring crimps the braided mesh onto the axial inner end of the retaining ring.

2. The welding-free quick-connect high-pressure hose according to claim 1, characterized in that: The end face of the axial inner end of the retaining spring is a first abutment surface, the first abutment surface is a conical surface, and the axial inner end diameter of the first abutment surface is smaller than the axial outer end diameter, the axial inner end of the locking ring has a boss protruding radially inward, the axial outer end face of the boss forms a second abutment surface, the second abutment surface is also a conical surface, the axial inner end diameter of the second abutment surface is smaller than the axial outer end diameter, and the end of the braided mesh is crimped between the first abutment surface of the retaining spring and the second abutment surface of the locking ring.

3. The welding-free quick-connect high-pressure hose according to claim 1, characterized in that: The inner hole of the axial outer end of the locking ring is a connecting portion, and the connecting portion is installed on the axial inner end of the joint.

4. The welding-free quick-connect high-pressure hose according to claim 3, characterized in that: The connection portion of the locking ring is a threaded hole, the axial inner end of the joint has an external thread, and the locking ring and the joint are connected by threads.

5. The welding-free quick-connect high-pressure hose according to claim 1, characterized in that: The tube wall of the bellows has a plurality of coaxial annular grooves along the axial direction, and the axial inner end of the clamping spring is clamped in the first annular groove at the axial end of the bellows.

6. The welding-free quick-connect high-pressure hose according to claim 5, characterized in that: The axial inner end of the clamping spring is provided with a clamping platform, the clamping platform protrudes toward the radial inner side of the clamping spring, and the clamping platform is embedded in the first annular groove at the end of the bellows.

7. The welding-free quick-connect high-pressure hose according to claim 6, characterized in that: The high-pressure hose also includes a sealing pad, which is located between the joint and the bellows. When the locking ring is connected to the joint, the sealing pad is squeezed onto the end surface of the joint through the retaining ring and the bellows.

8. The welding-free quick-connect high-pressure hose according to claim 1, characterized in that: The joint is a hexagonal joint.

9. The welding-free quick-connect high-pressure hose according to claim 1, characterized in that: Both ends of the hose body are connected with joints through connecting components.

10. A method for preparing a welding-free quick-connect high-pressure hose according to any one of claims 1 to 9, characterized in that: include: The braided mesh is put on the corrugated pipe; The locking ring and the retaining spring are sleeved on the bellows, the axial outer end of the retaining spring is clamped in the annular groove of the bellows, and the end of the braided mesh sleeve is inserted into the gap between the locking ring and the retaining spring; Install the sealing gasket and the joint at the end of the bellows, connect the locking ring to the joint, and squeeze the sealing gasket between the bellows and the joint to form a seal.

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