Stainless steel super flexible tube structure

Abstract

The utility model relates to pipeline technical field, propose a kind of stainless steel super-soft pipe structure, including hose body and the pipe connector connected in hose body end part, the hose body includes stainless steel outer hose, the inside of stainless steel outer hose is sleeved with silica gel inner hose, the end part of stainless steel outer hose and silica gel inner hose is fixed with joint, the end part inside of the joint is fixed with elastic film, and one end of the elastic film extends to joint outside;The utility model adopts the double active sealing structure of step sealing and elastic film compression sealing, realizes stainless steel super-soft pipe joint connection place zero leakage by mechanical stop and elastic extrusion, the sealing design of the core connecting part of the utility model in first taper portion's antiskid stop design combination hose body and pipe connector, realizes the double anti-disengagement of conical guiding insertion and corrugated antiskid.

Description

Technical Field

[0001] This utility model relates to the field of pipeline technology, specifically to a stainless steel ultra-flexible pipe structure. Background Technology

[0002] Stainless steel flexible hoses are widely used in industries such as aviation, aerospace, petroleum, chemical, metallurgy, power, papermaking, pharmaceuticals, food, and transportation. They can be used as protective conduits for wires, cables, and signals from automated instruments, and can also be used to transport various media such as steam, gas, air, heavy oil, petroleum, and chemicals. The inner tube of the stainless steel ultra-flexible hose is a thin-walled rubber or silicone textured tube with a spiral or annular waveform, which determines the hose's flexibility; the outer braided sheath is made of stainless steel wire or steel strip woven according to certain parameters, providing reinforcement and protection; the joints or flanges at both ends are used for connection with other pipes or equipment.

[0003] A search revealed that CN214197634U discloses an easy-to-install stainless steel flexible hose, including an upper sleeve and a delivery hose. The upper sleeve is fixedly installed at the upper end of the delivery hose. An upper ring is provided at the upper end of the upper sleeve. The upper ring on the outside of the upper fixed sleeve facilitates the fastening and fixing of the outer round pipe. The welded base of the upper fixed sleeve is welded and fixedly connected to the upper ring, preventing it from falling off during use. This facilitates support and use. The support rod and the arc-shaped buckle are fixed with fixing screws, preventing them from falling off during use. The arc-shaped buckle effectively fixes the outer pipe through its inner arc-shaped groove. During fixing, the arc-shaped buckle uses an inner rubber pad to effectively prevent it from falling off, making it easy to clamp and fix, and preventing it from falling off during use. However, the above-mentioned stainless steel hose still has the following problems: The stainless steel hose uses a single passive sealing method of threaded connection + fixed buckle gasket for sealing. It only seals with the external pipe by the threads of the upper and lower screw pipes, without any additional active compression mechanism. In addition, the inner rubber gasket of the fixed buckle is only used to limit the external pipe and does not directly participate in the medium sealing. If the thread processing accuracy is insufficient or the thread loosens after long-term use, leakage risk may occur. Utility Model Content

[0004] This invention proposes a stainless steel ultra-flexible tube structure, which solves the problem of leakage risk caused by the single sealing method in the prior art.

[0005] The technical solution of this utility model is as follows: a stainless steel ultra-flexible tube structure, including a flexible tube body and a tube connector connected to the end of the flexible tube body. The flexible tube body includes a stainless steel outer flexible tube, and a silicone inner flexible tube is sleeved on the inner side of the stainless steel outer flexible tube. The ends of the stainless steel outer flexible tube and the silicone inner flexible tube are fixed with a joint. An elastic membrane is fixed on the inner side of the end of the joint, and one end of the elastic membrane extends to the outside of the joint. The tube connector is provided with a first cone, a second cone and a rotating ring in sequence along the insertion direction of the connector. The first cone and the second cone pass through the elastic membrane and are inserted into the connector. The end of the second cone facing the rotating ring is provided with a conical groove. The rotating ring can press the elastic membrane into the conical groove.

[0006] Preferably, the joint has a step for stopping the first cone portion, and a sealing gasket is fixed on the step surface.

[0007] Preferably, the end of the connector near the tube connector has a tapered structure that gradually narrows.

[0008] Preferably, the first conical portion has a tapered structure with a gradually narrowing end near the hose body, while the remaining portion has a cylindrical structure.

[0009] Preferably, the cylindrical surface of the first conical portion is provided with corrugations.

[0010] Preferably, the end of the rotating ring near the second cone is provided with a conical pressing surface, which is adapted to the conical groove.

[0011] Preferably, the tube connector is provided with an external thread that mates with the swivel thread.

[0012] The beneficial effects of this utility model are as follows: 1. This utility model adopts a dual active sealing structure of stepped sealing and elastic membrane compression sealing, and achieves zero leakage at the connection of stainless steel ultra-soft pipe joint through mechanical stop and elastic extrusion. 2. The anti-slip stop design of the first cone in this utility model, combined with the sealing design of the core connection part of the hose body and the tube connector, achieves dual anti-dislodgement of cone-shaped guide insertion and corrugated anti-slip. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a schematic diagram of the tube connector and hose body before connection according to this utility model; Figure 2 This is a schematic diagram showing the tube connector proposed in this utility model after it is inserted into the flexible tube (elastic membrane turned outwards); Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram showing the tube connector proposed in this utility model after it is inserted into the flexible tube (elastic membrane flips back); Figure 5 for Figure 4 Enlarged structural diagram at point B; Figure 6 This is a schematic diagram showing the tube connector proposed in this utility model after it is inserted into the flexible tube (the elastic membrane is pressed into the conical groove); Figure 7 for Figure 6 Enlarged structural diagram at point C; In the diagram: 1. Tube connector; 11. First cone; 111. Corrugated; 12. Second cone; 121. Conical groove; 13. Rotary ring; 131. Conical pressing surface; 14. External thread; 2. Hose body; 21. Stainless steel outer hose; 22. Silicone inner hose; 23. Connector; 231. Step; 232. Sealing gasket; 24. Elastic membrane. Detailed Implementation

[0015] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0016] Please see Figures 1-7 This utility model provides a technical solution: a stainless steel ultra-flexible tube structure, including a flexible tube body 2 and a tube connector 1 connected to the end of the flexible tube body 2. The flexible tube body 2 includes a stainless steel outer flexible tube 21, and a silicone inner flexible tube 22 is sleeved on the inner side of the stainless steel outer flexible tube 21. The outer stainless steel outer flexible tube 21 is made of flexible thin-walled stainless steel, which retains the corrosion resistance and tensile strength of metal (to avoid damage from external forces), and improves bending flexibility through the thin-walled structure, providing basic support for "ultra-flexibility". The inner silicone inner flexible tube 22 is made of silicone material with high elasticity and high flexibility. When in direct contact with the conveying medium, it can further improve the overall bending degree of the tube to achieve "ultra-flexibility" and enhance the sealing of the medium to avoid liquid / gas leakage. The ends of the stainless steel outer flexible tube 21 and the silicone inner flexible tube 22 are jointly fixed with a connector 23. An elastic membrane 24 is fixed on the inner side of the end of the connector 23. One end of the elastic membrane 24 extends to the outside of the connector 23. In the initial state, it is turned outward and attached to the outside of the connector. After being inserted into the tube connector 1, it is turned back to the space between the swivel 13 and the second cone 12.

[0017] In a preferred embodiment, the tube connector 1 is provided with a first cone 11, a second cone 12 and a rotating ring 13 in sequence along the insertion direction of the connector 23. The first cone 11 and the second cone 12 are inserted into the connector 23 through the elastic membrane 24. The end of the second cone 12 facing the rotating ring 13 is provided with a conical groove 121. The rotating ring 13 can press the elastic membrane 24 into the conical groove 121.

[0018] In a preferred embodiment, the connector 23 is provided with a step 231 for stopping the first cone 11. A sealing gasket 232 is fixed on the step surface of the step 231. When the first cone 11 of the tube connector 1 is inserted, it will directly abut against the sealing gasket 232 on the step surface. The sealing gasket 232 is made of elastic rubber. After being squeezed by the first cone 11, it deforms and fills the gap between the first cone and the step, forming the first medium seal. At the same time, the "step stop" ensures that the insertion depth of the tube connector 1 is fixed, avoiding the seal failure caused by being too shallow.

[0019] In a preferred embodiment, the end of the connector 23 near the tube connector 1 is a tapered structure that gradually narrows, and the end of the first tapered portion 11 near the hose body 2 is a tapered structure that gradually narrows, while the rest is a cylindrical structure. The tapered structure facilitates the quick insertion of the tube connector 1, reducing installation difficulty, and the corrugations 111 on the cylindrical surface of the first tapered portion 11 provide preliminary mechanical anti-dislodgement to prevent the connector from being easily pulled out along the axial direction. When the first tapered portion 11 is inserted into the connector 23, the corrugations 11 fit tightly against the inner wall of the silicone inner hose 22. The corrugated structure greatly increases the friction of the first tapered portion 11, so that even if the hose is pulled, the connector can be prevented from slipping off the hose body.

[0020] In a preferred embodiment, the end of the rotating ring 13 near the second cone 12 is provided with a conical pressing surface 131, which is adapted to the conical groove 121. The tube connector 1 is provided with an external thread 14 that is threaded to the rotating ring 13. When the rotating ring 13 is rotated, the rotating ring 13 moves toward the second cone 12. The conical pressing surface 131 at its end is adapted to the conical groove 121 to insert the elastic membrane 24 and press it into the conical groove 121. After the elastic membrane 24 is squeezed by the conical surface, it fits tightly against the conical groove 121 and the pressing surface of the rotating ring to form a circumferential seal, completely blocking the leakage of the medium from the gap between the connector and the joint.

[0021] The working principle and usage process of this utility model are as follows: In the initial state, the tube connector 1 and the hose body 2 are as follows: Figure 1As shown, the elastic membrane 24 is folded outward and attached to the outer conical surface of the connector 23. Holding the elastic membrane 24, insert the first conical part 11 and the second conical part 12 of the tube connector 1 into the connector 23 until the first conical part 11 abuts against the sealing gasket 232 of the step 231. At this point, the tube connector 1 and the hose body 2 are as shown. Figure 2 , Figure 3 The state shown; Loosen the elastic diaphragm 24 and flip it back so that it contracts between the rotating ring 13 and the second cone 12. At this time, the tube connector 1 and the hose body 2 are as follows: Figure 4 , Figure 5 In the indicated state, the rotating conical pressing surface 131, under the cooperation of the rotating ring 13 and the external thread 14, causes the rotating ring 13 to move towards the second conical portion 12, thereby pushing the elastic membrane 24 into the conical groove 121 by the rotating ring 13, until the conical pressing surface 131 completely presses the elastic membrane 24 into the conical groove 121. At this time, the tube connector 1 and the hose body 2 are as shown. Figure 6 , Figure 7 In the state shown, the sealing gasket 232 contacts the first cone 11 to achieve a seal, while the conical pressing surface 131 presses the elastic membrane 24 into the conical groove 121 to achieve a further seal. The corrugations 111 on the cylindrical surface of the first cone 11 play an anti-slip role to prevent the tube connector 1 from slipping off the hose body 2.

[0022] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A stainless steel super flexible pipe structure comprising a pipe body (2) and a pipe body connector (1) connected to the end of the pipe body (2), characterized in that, The hose body (2) includes a stainless steel outer hose (21), and a silicone inner hose (22) is sleeved on the inner side of the stainless steel outer hose (21). The ends of the stainless steel outer hose (21) and the silicone inner hose (22) are fixed with a joint (23). An elastic membrane (24) is fixed on the inner side of the end of the joint (23), and one end of the elastic membrane (24) extends to the outside of the joint (23). The tube connector (1) is provided with a first cone (11), a second cone (12) and a swivel (13) in sequence along the insertion direction of the connector (23). The first cone (11) and the second cone (12) pass through the elastic membrane (24) and are inserted into the connector (23). The second cone (12) has a conical groove (121) at one end facing the swivel (13). The swivel (13) can press the elastic membrane (24) into the conical groove (121).

2. A stainless steel super flexible pipe structure according to claim 1, wherein The connector (23) is provided with a step (231) for stopping the first cone (11), and a sealing gasket (232) is fixed on the step surface of the step (231).

3. A stainless steel super flexible pipe structure according to claim 1, wherein The end of the connector (23) near the tube connector (1) is a tapered structure that gradually narrows.

4. A stainless steel super flexible pipe structure according to claim 1, wherein The first conical part (11) has a tapered structure that gradually narrows at one end near the hose body (2), while the rest is a cylindrical structure.

5. A stainless steel super flexible pipe structure according to claim 4, wherein The first conical part (11) has corrugations (111) on its cylindrical surface.

6. A stainless steel super flexible pipe structure according to claim 1, wherein The rotating ring (13) has a conical pressing surface (131) at one end near the second cone (12), and the conical pressing surface (131) is adapted to the conical groove (121).

7. A stainless steel super flexible pipe structure according to claim 1, wherein The tube connector (1) is provided with an external thread (14) that engages with the thread of the swivel (13).

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