Fuel gas stainless steel corrugated pipe capable of preventing internal thread connector from being automatically screwed and disassembled

Abstract

The utility model discloses a fuel gas stainless steel corrugated pipe capable of preventing an internal thread connector from being automatically screwed and disassembled, which comprises a corrugated pipe body, a rubber sealing gasket and an internal thread connector, the end part of the corrugated pipe body is connected with the rubber sealing gasket, and the end part of the corrugated pipe body is sleeved with the internal thread connector; a rotating groove is formed in the inner wall of the internal thread connector, the surface, close to the rotating groove, of the corrugated pipe body is connected with a rotating block, and the end of the internal thread connector is connected with a first gear ring. According to the utility model, the movable ring is extruded to drive the second gear ring to move in the direction close to the baffle plate to compress the spring strip, the movable ring is loosened after the internal thread connector is connected with the gas connector, and the spring strip extrudes the second gear ring through the movable ring to move in the direction close to the first gear ring at the moment; and the first gear ring and the second gear ring are engaged to limit the internal thread connector, and the situation that the sealing effect of corrugated pipe body connection is reduced due to automatic screwing of the internal thread connector is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas bellows, and particularly relates to a stainless steel bellows for gas with an internal thread joint that can be prevented from being automatically twisted and disassembled. Background Art

[0002] Gas bellows, also known as gas hose or metal hose, is a flexible pipe made of metal materials such as stainless steel. As a key component in the gas transmission system, gas bellows has many advantages and a wide range of applications. The bellows has good pressure resistance and corrosion resistance, and can effectively prevent safety accidents such as gas leaks and explosions. The bellows is light and flexible, easy to install and maintain, reducing construction difficulty and cost. The stainless steel material has a smooth surface, is easy to clean, and has a long service life, and can maintain long-term beauty and durability.

[0003] When connecting the gas bellows to the gas joint, it is mainly threaded through the internal thread joint and the external thread joint of the gas joint. During this process, the internal thread joint can squeeze the rubber sealing gasket toward the external thread joint. The rubber sealing gasket can be used to seal between the bellows body and the external thread joint, which can avoid any form of gas leakage, thereby ensuring safety in use and environmental safety.

[0004] However, it's worth noting that to ensure the safety of gas bellows during use, sealing must be guaranteed. However, the internal threaded joint has a tendency to twist independently, reducing the squeezing force on the rubber gasket. This can reduce the sealing effect between the bellows body and the external threaded joint, leading to a decrease in the sealing performance at the joint. Once the sealing performance no longer meets safety standards, there is a risk of gas leakage, which can easily lead to serious safety hazards such as fire and explosion, posing a threat to personal and property safety. Utility Model Content

[0005] The purpose of this utility model is to provide a stainless steel bellows for gas use that prevents the internal threaded joint from twisting and disassembling on its own. This is to address the problem that the internal threaded joint may twist on its own, which reduces the extrusion force on the rubber sealing gasket, thereby reducing the sealing effect between the bellows body and the external threaded joint, and resulting in a decrease in the sealing performance of the joint. Once the sealing performance no longer meets safety standards, there is a risk of gas leakage, which can easily cause serious safety hazards such as fire and explosion, posing a threat to personal safety and property safety.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stainless steel bellows for gas that prevents the internal thread joint from being automatically twisted and disassembled, comprising a bellows body, a rubber sealing gasket and an internal threaded joint, the end of the bellows body is connected to a rubber sealing gasket, and the end of the bellows body is sleeved with an internal threaded joint; a rotation groove is provided on the inner wall of the internal threaded joint, a rotating block is connected to the surface of the bellows body near the rotation groove, a first gear ring is connected to the end of the internal threaded joint, a second gear ring is sleeved on the surface of the bellows body, a movable ring is connected to the top of the second gear ring, a baffle is connected to the surface of the bellows body, a spring bar is connected between the baffle and the movable ring, and the spring bar is sleeved on the surface of the bellows body.

[0007] As a stainless steel bellows for gas with an anti-self-twisting and disassembly-proof internal thread joint of the present invention, preferably, the rotating block and the bellows body are an integrated structure, and the internal threaded joint forms a rotating structure through the rotating groove and the rotating block.

[0008] As a stainless steel bellows for gas that prevents the internal thread joint from being automatically twisted and disassembled according to the utility model, preferably, the internal thread thread joint and the first gear ring are an integrated structure, the second gear ring and the movable ring are an integrated structure, the first gear ring and the second gear ring are in sliding connection, and the second gear ring, the movable ring and the bellows body are in sliding connection.

[0009] In order to make the first gear ring engage with the second gear ring, so as to limit the internal threaded joint, preferably, the baffle and the bellows body are an integrated structure, and the movable ring and the baffle form an elastic telescopic structure through a spring bar.

[0010] In order to limit the movement direction of the second gear ring and the movable ring, as a stainless steel bellows for gas that prevents the internal thread joint from being automatically twisted and disassembled, the utility model preferably provides guide grooves on the inner walls of the second gear ring and the movable ring, and the surface of the bellows body close to the guide grooves is connected with guide sliders, and the guide grooves and guide sliders are symmetrically arranged on both sides of the bellows body, and the movable ring forms a limiting structure through the guide grooves and the guide sliders.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The squeezing of the movable ring can drive the second gear ring to move in the direction close to the baffle to compress the spring strip. After the internal threaded joint is connected to the gas joint, the movable ring is loosened. At this time, the spring strip squeezes the movable ring through its own elastic force to reset. The reset of the movable ring can drive the second gear ring to move in the direction close to the first gear ring. In this way, the first gear ring and the second gear ring can be meshed, thereby limiting the internal threaded joint and preventing the internal threaded joint from twisting on its own, resulting in a reduction in the sealing effect of the bellows body connection, thereby causing gas leakage, fire, explosion and other serious safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 Schematic diagram of the overall assembly structure of the stainless steel bellows for gas to prevent the internal thread joint from being twisted and disassembled independently.

[0015] Figure 2 A partial diagram of the connection structure between the bellows body and the internal threaded joint of a stainless steel bellows for gas use, to prevent the internal thread joint from being twisted and disassembled independently.

[0016] Figure 3 Exploded diagram of the connection structure between the bellows body and the internal threaded joint of a stainless steel bellows for gas use to prevent the internal thread joint from being twisted and disassembled independently.

[0017] Figure 4 Cross-sectional view of the connection structure between the bellows body and the internal threaded joint of a stainless steel bellows for gas, to prevent the internal thread joint from being twisted and disassembled independently.

[0018] Figure 5 A cross-sectional view of the internal threaded joint and the first gear ring structure of a stainless steel bellows for gas, which is used to prevent the internal thread joint from being twisted and disassembled independently.

[0019] Figure 6 A cross-sectional view of the second gear ring and movable ring structure of the stainless steel bellows for gas to prevent the internal thread joint from twisting and disassembling independently.

[0020] In the figure: 1. Bellows body; 2. Rubber sealing gasket; 3. Female threaded joint; 4. Rotating groove; 5. Rotating block; 6. First gear ring; 7. Second gear ring; 8. Movable ring; 9. Guide groove; 10. Guide slider; 11. Baffle; 12. Spring bar. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-6 The utility model provides the following technical solutions: a stainless steel bellows for gas with an anti-self-twisting and disassembly of an internal thread joint, comprising a bellows body 1, a rubber sealing gasket 2 and an internal thread joint 3, the end of the bellows body 1 is connected with a rubber sealing gasket 2, and the end of the bellows body 1 is sleeved with an internal thread joint 3; a rotation groove 4 is provided on the inner wall of the internal thread joint 3, a rotating block 5 is connected to the surface of the bellows body 1 near the rotation groove 4, a first gear ring 6 is connected to the end of the internal thread joint 3, a second gear ring 7 is sleeved on the surface of the bellows body 1, a movable ring 8 is connected to the top of the second gear ring 7, a baffle 11 is connected to the surface of the bellows body 1, a spring bar 12 is connected between the baffle 11 and the movable ring 8, and the spring bar 12 is sleeved on the surface of the bellows body 1.

[0023] Extruding the movable ring 8 can drive the second gear ring 7 to move upward and compress the spring bar 12. When the second gear ring 7 moves to the top of the first gear ring 6, the internal threaded connector 3 can be rotated at this time, so that the internal threaded connector 3 can be conveniently connected to the gas connector.

[0024] Preferably: the rotating block 5 and the bellows body 1 are an integral structure, the internal threaded joint 3 forms a rotating structure with the rotating block 5 through the rotating groove 4, the internal threaded joint 3 and the first gear ring 6 are an integral structure, the second gear ring 7 and the movable ring 8 are an integral structure, the first gear ring 6 and the second gear ring 7 are slidingly connected, the second gear ring 7 and the movable ring 8 and the bellows body 1 are slidingly connected, the baffle 11 and the bellows body 1 are an integral structure, and the movable ring 8 and the baffle 11 form an elastic telescopic structure through the spring bar 12.

[0025] After loosening the movable ring 8, the spring bar 12 can reset the movable ring 8 by squeezing the movable ring 8 through its own elastic force. The reset of the movable ring 8 can drive the second gear ring 7 to reset. After the second gear ring 7 is reset, it can engage with the first gear ring 6, so as to prevent the internal threaded joint 3 from being twisted with each other.

[0026] Preferably: a guide groove 9 is provided on the inner wall of the second gear ring 7 and the movable ring 8, and a guide slider 10 is connected to the surface of the bellows body 1 close to the guide groove 9. The guide groove 9 and the guide slider 10 are symmetrically arranged on both sides of the bellows body 1, and the movable ring 8 forms a limiting structure through the guide groove 9 and the guide slider 10.

[0027] When the second gear ring 7 and the movable ring 8 are subjected to an action force, the guide groove 9 can be driven to slide on the surface of the guide slider 10 , thereby limiting the movement of the second gear ring 7 and the movable ring 8 .

[0028] When in use, first squeeze the movable ring 8. The movable ring 8 is squeezed to drive the second gear ring 7 to move in the direction close to the baffle 11 and squeeze the spring bar 12. Then, the internal threaded joint 3 is sleeved on the end of the external threaded joint of the gas joint and rotated. When the internal threaded joint 3 rotates, it can drive the rotating groove 4 to rotate on the surface of the rotating block 5. At the same time, the internal threaded joint 3 can move in the direction close to the gas joint while the external threaded joint rotates. The movement of the internal threaded joint 3 can drive the rubber sealing gasket 2 to move in the direction of the external threaded joint through the bellows body 1. By squeezing the rubber sealing gasket 2 to the end of the external threaded joint, a sealing effect can be achieved. At this time, the movable ring 8 can be loosened. At this time, the spring bar 12 squeezes the movable ring 8 to reset through its own elastic force. The reset of the movable ring 8 can drive the second gear ring 7 to move in the direction close to the first gear ring 6. In this way, the first gear ring 6 can be meshed with the second gear ring 7, thereby limiting the internal threaded joint 3, avoiding the internal threaded joint 3 from being self-twisted, resulting in a reduction in the sealing effect of the bellows body 1 connection, thereby improving the safety of the gas bellows.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A stainless steel bellows for gas with an internal thread joint that can be twisted and disassembled automatically, comprising a bellows body (1), a rubber sealing gasket (2) and an internal thread joint (3), characterized in that: The end of the bellows body (1) is connected to a rubber sealing gasket (2), and the end of the bellows body (1) is sleeved with an internal thread joint (3); a rotation groove (4) is provided on the inner wall of the internal thread joint (3), and a rotation block (5) is connected to the surface of the bellows body (1) near the rotation groove (4); the end of the internal thread joint (3) is connected to a first gear ring (6), and the surface of the bellows body (1) is sleeved with a second gear ring (7), and the top of the second gear ring (7) is connected to a movable ring (8), and the surface of the bellows body (1) is connected to a baffle (11), and a spring bar (12) is connected between the baffle (11) and the movable ring (8), and the spring bar (12) is sleeved on the surface of the bellows body (1).

2. The stainless steel bellows for gas with an anti-internal thread joint that can be automatically twisted and disassembled according to claim 1, characterized in that: The rotating block (5) and the corrugated pipe body (1) are an integrated structure, and the internal threaded joint (3) forms a rotating structure with the rotating block (5) through the rotating groove (4).

3. The stainless steel bellows for gas with an anti-internal thread joint that can be automatically twisted and disassembled according to claim 1, characterized in that: The internal threaded joint (3) and the first gear ring (6) are an integral structure, the second gear ring (7) and the movable ring (8) are an integral structure, and the first gear ring (6) and the second gear ring (7) are in sliding connection.

4. The stainless steel bellows for gas with an anti-internal thread joint that can be automatically twisted and disassembled according to claim 3, characterized in that: The second gear ring (7), the movable ring (8) and the bellows body (1) are in sliding connection.

5. The stainless steel bellows for gas with an anti-internal thread joint that can be automatically twisted and disassembled according to claim 1, characterized in that: The baffle (11) and the bellows body (1) are an integrated structure, and an elastic telescopic structure is formed between the movable ring (8) and the baffle (11) via a spring bar (12).

6. The stainless steel bellows for gas with an anti-internal thread joint that can be automatically twisted and disassembled according to claim 1, characterized in that: The inner walls of the second gear ring (7) and the movable ring (8) are provided with guide grooves (9), and the surface of the bellows body (1) near the guide grooves (9) is connected with a guide slider (10).

7. The stainless steel bellows for gas with an anti-internal thread joint that can be automatically twisted and disassembled according to claim 6, characterized in that: The guide slot (9) and the guide slider (10) are symmetrically arranged on both sides of the corrugated tube body (1), and the movable ring (8) forms a limiting structure through the guide slot (9) and the guide slider (10).

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