Leak-proof hose

Abstract

A spring is arranged on the outer side of a hose body in a sleeved mode, a pair of connectors are welded to the two opposite ends of the hose body respectively to form a welding ring, the welding ring at least wraps the connecting positions of the connectors and the hose body, each protective shell is provided with a middle cavity, and the pair of protective shells are arranged on the pair of connectors in a sleeved mode through the middle cavities of the protective shells respectively. And the end part of the spring and the welding ring are positioned in the middle cavity. The welding ring is formed at the welding position of the hose body and the connector, so that stable connection of the hose body and the connector can be achieved, fluid leakage can be prevented after the connecting position of the hose body and the connector is isolated from the outside, zero leakage is achieved, fluid conveying safety is guaranteed, the welding ring and other connecting positions can be protected through the protective shell, and safety of fluid conveying is guaranteed. Leakage caused by damage is avoided, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to high pressure material conveying hose technical field especially relates to a kind of anti-leakage hoses. BACKGROUND

[0002] The pipe body for fluid conveying includes hard pipe and hose, wherein the hose is widely used in industry, petroleum, chemical industry, natural gas conveying and other fields, especially in helium detection vacuum box, it is not convenient to use steel pipe connection, can replace steel pipe by the bending, telescopic type and other characteristics of hose (metal material), the hose is connected with the outside through joint, such as the connection of hose and joint is not sealed, or the rupture of hose body and other conditions can lead to leakage,

[0003] In prior art, such as the natural gas hose of anti-leakage of transmission end head in application No.202321738186.1, it mainly discloses that the reset assembly can effectively avoid the problem that it is more troublesome to remove relevant components by matching corresponding screwdriver when the hose needs to be removed, and does not disclose how to solve the structure and problem of preventing leakage, and such as the shock-absorbing metal hose for high-pressure pump in application No.202311041017.7, it mainly discloses that the stability between hose joint and pump body joint is improved, so that the hose joint and pump body joint will not automatically fall off due to vibration generated when high-pressure pump works, and does not disclose how to realize the anti-leakage of hose body. SUMMARY

[0004] The utility model discloses a kind of anti-leakage hoses, by forming welding ring at the welding position of hose main body and joint, the stable connection of hose main body and joint can be realized, the connection of two and outside can be isolated to prevent fluid leakage, achieve zero leakage, ensure the safety of fluid conveying, and by protection shell, the protection of welding ring and other connecting positions can be formed, avoid damage to cause leakage, improve service life.

[0005] To achieve the above object, the technical scheme adopted by the utility model is as follows: an anti-leakage hose comprises:

[0006] a hose main body, a spring is sleeved on the outer side of the hose main body,

[0007] a joint, a pair of joints are respectively welded on the opposite ends of the hose main body, and a welding ring is formed, the welding ring covers at least the connection of the joint and the hose main body,

[0008] a protection shell, the protection shell has a middle cavity, a pair of protection shells are respectively sleeved on a pair of joints by the middle cavity of each protection shell, and the end of the spring and the welding ring are located in the middle cavity.

[0009] As a further optimization, the end of the joint and the end of the hose body are both located within the welding ring.

[0010] As a further optimization, the welding ring is located within the spring.

[0011] As a further optimization, the hose body comprises a hose and a wire mesh layer wrapped outside the hose, the hose is welded with the joint, and the wire mesh layer protects the hose to a certain extent to avoid the hose from bursting due to excessive internal pressure.

[0012] As a further optimization, the hose is a bellows.

[0013] As a further optimization, the joint comprises an end portion, a clamping portion and a connecting portion connected in sequence and gradually decreasing in outer diameter, the protective shell is arranged on the clamping portion and abuts against the end portion, and the hose body is welded with the connecting portion.

[0014] As a further optimization, one end of the clamping portion close to the end portion is provided with a clamping groove, and the inner wall of the protective shell is provided with a clamping ring, the clamping ring is embedded in the clamping groove, and the protective shell can be more stably installed on the joint.

[0015] As a further optimization, the protective shell and the clamping ring are integrally formed, and both are made of rubber material, which can realize interference abutment and clamping with the structure.

[0016] As a further optimization, the middle cavity comprises an upper cavity and a lower cavity connected in communication, the diameter of the upper cavity is smaller than that of the lower cavity, the side wall of the upper cavity is at least partially clamped on the joint, and the welding ring is located in the lower cavity.

[0017] As a further optimization, the end of the spring extends into the lower cavity and can extend into the upper cavity.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The welding ring formed at the welding position of the hose body and the joint can realize stable connection of the hose body and the joint, and can also prevent fluid leakage after isolating the connection position of the two from the outside, achieve zero leakage, and ensure the safety of fluid conveying.

[0020] 2. The protective shell formed at least on the outside of the welding ring can protect the welding position to avoid fluid leakage caused by damage and improve the service life.

[0021] 3. The spring is sleeved on the hose body, and the elastic extension and contraction of the two can better realize the characteristics of elongation and bending, and have a wider application scenario. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The structural diagram of the utility model.

[0023] Figure 2 The sectional view of the end of the utility model.

[0024] Figure 3 The connection structure schematic diagram of the joint and the hose main body.

[0025] Figure 4 The connection structure schematic diagram of the joint and the hose main body at another side view angle.

[0026] Figure 5 The structure diagram of the welding ring on the hose main body. Specific implementation

[0027] The following is the specific embodiment of the utility model and is combined with the drawings, and the technical scheme of the utility model is further described, but the utility model is not limited to these embodiments.

[0028] As Figures 1 to 5 shown, a kind of leakage-proof hose, including hose main body 10, joint 20, protective shell 30 and spring 40, the outside of hose main body 10 is equipped with spring 40, a pair of joint 20 is respectively welded in the opposite ends of hose main body 10, hose main body 10 is metal material to facilitate realization welding, welding forms welding ring 11 after, welding ring 11 is at least fixedly covered in the connecting place of joint 20 and hose main body 10, protective shell 30 has middle cavity 300, a pair of protective shell 30 is respectively set on a pair of joint 20 by the middle cavity 300 of each having, the end of spring 40 and welding ring 11 are all located in middle cavity 300.

[0029] In the utility model, the hose main body 10 has a first flow cavity 100, the joint 20 has a second flow cavity 200, the joint 20 is connected with the hose main body 10 after welding and communicates the second flow cavity 200 and the first flow cavity 100, can realize the delivery of high pressure fluid, and the welding ring 11 formed at the welding position of the hose main body 10 and the joint 20 can realize the stable connection of the hose main body 11 and the joint 20 on the one hand, and the welding ring 11 can prevent fluid leakage after sealing the connecting position of the two from the outside, achieve zero leakage, ensure the safety of fluid delivery, and on the basis that the spring 40 is arranged on the outside of the hose main body 10 to keep the elasticity of the hose main body 10, the elasticity of the hose main body 10 can better realize the elongation, bending and other characteristics of the anti-leakage hose, and the utility model has a wider application scene, and the end of the welding ring 11 and the spring 40 is located in the middle cavity 300, which can avoid damage to the end of the welding ring 11 or the spring 40 caused by the external environment, especially through the protection of the welding ring 11, the leakage caused by the unstable connection or poor sealing of the hose main body 10 and the joint 20 due to the damage of the welding ring 11 can be avoided, and the service life can be improved.

[0030] The utility model is installed flexible and convenient, adapts complex installation environment, has excellent sealing effect, can be widely applied to fluid delivery field such as petroleum, chemical industry, natural gas, especially good sealing effect on helium leak detection equipment.

[0031] In the utility model, when assembling various components, the spring 40 is first sleeved on the hose main body 10, then a pair of protective shells 30 are respectively sleeved on the two ends of the hose main body 10, when welding the hose main body 10 and the joint 20, the protective shell 30 at one end is moved to the middle part of the hose main body 10 (driving the spring 40 to move), one end of the hose main body 10 is exposed and welded with the joint 20 to form a welding ring 11, and after cooling, the protective shell 30 is moved and sleeved on the joint 20; similarly, when welding the other joint 20, the other protective shell 30 is moved to the middle part of the hose main body 10 (compressing the spring 40 to move), the other end of the hose main body 10 is exposed and welded with the other joint 20 to form the other welding ring 11, and after cooling, the other protective shell 30 is moved and sleeved on the other joint 20, so that the assembly of the whole anti-leakage hose is completed.

[0032] Preferably, the end of the joint 20 and the end of the hose main body 10 are located in the welding ring 11, and the large-area coverage of the joint 20 and the hose main body 10 can ensure that the connecting position of the two has excellent sealing performance.

[0033] The welding ring 11 is located in the spring 40, that is, the spring 40 has a relatively long length, can wrap the whole hose main body 10 and part of the joint 20, and can make the spring 40 have better stability.

[0034] Preferably, the hose body 10 comprises a hose 101 and a wire mesh layer 102 covering the outside of the hose 101, the hose 101 is preferably a metal corrugated pipe, and the hose 101 is welded with the joint 20. The metal corrugated pipe as the hose 101 can have good stretchability and bendability, and the outside of the metal corrugated pipe is covered with the wire mesh layer 102, which can form a certain restraint on the hose 101 to prevent the hose 101 from bursting due to excessive pressure in the first flow cavity 100; of course, the wire mesh layer 102 needs to have a certain interval between each other when being wound and formed, and a certain gap is formed between the wire mesh layer 102 and the hose 101 to adapt to the stretching and bending of the hose 101, at this time the wire mesh layer 102 is restrained by the spring 40.

[0035] In another embodiment, the joint 20 comprises an end portion 21, a clamping portion 22 and a connecting portion 23 connected in sequence and gradually decreasing in outer diameter, the protective shell 30 is sleeved on the clamping portion 22 and abuts against the end portion 21, and the hose body 10 is welded with the connecting portion 23, the protective shell 30 is fixed by the clamping portion 22, and the protective shell 30 is limited by the end portion 21.

[0036] Preferably, one end of the clamping portion 22 close to the end portion 21 is provided with a clamping groove 220, and the inner wall of the protective shell 30 is provided with a clamping ring (not shown), the clamping ring is embedded in the clamping groove 220, so that the protective shell 30 can be positioned firmly on the joint 20; further, the protective shell 30 and the clamping ring are integrally formed, and both are made of rubber material, such as hard rubber, which can deform to a certain extent and recover, which is beneficial to realize interference abutment with the clamping portion 22 and embed the clamping ring in the clamping groove 220.

[0037] Preferably, the middle cavity 300 of the protective shell 30 comprises an upper cavity 301 and a lower cavity 302 connected in communication, the diameter of the upper cavity 301 is smaller than that of the lower cavity 302; the side wall of the upper cavity 301 is at least partially clamped on the joint 20, that is, interference abutment with the clamping portion 22 and forming clamping; the welding ring 11 is located in the lower cavity 302.

[0038] The end of the spring 40 extends into the lower cavity 302 and can extend into the upper cavity 301, and can abut against the end face 221 of the clamping portion 22 away from the end portion 21 to form a limit, so as to ensure the stability of the spring 40.

[0039] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A leakproof hose characterized by, The utility model relates to a kind of spring-steel wire hose, including: Hose body, spring is sleeved outside the outer side of the hose body, Joint, a pair of the joint is respectively welded in the opposite two ends of the hose body, and welding ring is formed, the welding ring at least covers the joint with the connecting place of the hose body, Protective shell has middle cavity, a pair of the protective shell is respectively sleeved on a pair of the joint by each having the middle cavity, the end of the spring and the welding ring are located in the middle cavity.

2. The leak resistant hose of claim 1, wherein, The end of the joint and the end of the hose body are located in the welding ring.

3. A leakproof hose according to claim 1 or 2, characterized in that The welding ring is located in the spring.

4. The leak resistant hose of claim 1, wherein, The hose body includes hose and steel wire mesh layer covered outside the hose, the hose is welded with the joint.

5. The leak resistant hose of claim 4, wherein, The hose is bellows.

6. The leak resistant hose of claim 1, wherein, The joint includes end, clamping part and connecting part that are sequentially connected and the outer diameter gradually decreases, the protective shell is sleeved on the clamping part and is in abutment with the end, the hose body is welded with the connecting part.

7. The leak resistant hose of claim 6, wherein, One end of the clamping part close to the end is provided with clamping groove, the inner wall of the protective shell is provided with snap ring, and the snap ring is embedded in the clamping groove.

8. The leak resistant hose of claim 7, wherein, The protective shell and snap ring are integrally formed structure, and they are rubber material.

9. The leak resistant hose of claim 1 or 6 or 7, wherein, The middle cavity includes upper cavity and lower cavity that are connected, the diameter of the upper cavity is less than the diameter of the lower cavity;The sidewall of the upper cavity is at least partially clamped on the joint; Welding ring is located in the lower cavity.

10. The leak resistant hose of claim 9, wherein, The end of the spring extends into the lower cavity and can extend into the upper cavity.

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