A sealing washer structure of a small gas cylinder filling and welding sealing tool

Abstract

The utility model discloses a kind of small gas cylinder inflation welding sealing tool sealing washer structure, it is related to sealing technical field, solve the technical problem that the sealing effect between the poor existing technical scheme small gas cylinder inflation welding sealing tool and small gas cylinder, leading to serious gas leakage, small gas cylinder inflation weight is not easy to control;Including washer body, the washer body is ladder circular ring structure, washer body outer circle front end diameter is greater than washer body outer circle rear end diameter, washer body inner circle and located at the washer body rear end are provided with arc fillet of section, the utility model improves the sealing degree between "small gas cylinder inflation welding sealing tool" and small gas cylinder, when actual inflation operation, no gas leakage occurs, so that small gas cylinder inflation weight is controllable;Solve the problem of poor sealing effect between the existing small gas cylinder inflation welding sealing tool and small gas cylinder, reduce the security risk and resource waste brought by gas leakage.

Description

Technical Field

[0001] This utility model relates to the field of sealing technology, specifically to a sealing gasket structure for a small gas cylinder filling and welding tool. Background Technology

[0002] This utility model relates to the technical field of "small gas cylinder filling and sealing fixture," which is an integrated fixture used for filling small gas cylinders (gas cylinder filling weight ≤ 500g ± 5g) and welding the bottle nozzle and cap of the small gas cylinder. The existing "small gas cylinder filling and sealing fixture" works by placing the bottle cap into the bottle nozzle hole of the small gas cylinder, then screwing the small gas cylinder and bottle cap together into the connecting hole on the fixture and tightening it. Inflation is then performed through the inflation end, and the small gas cylinder is inflated. The small gas cylinder and bottle cap are then welded together via electrodes. Finally, the small gas cylinder is unscrewed to complete the filling operation. However, in practice, it is difficult to control the filling weight of the small gas cylinder to meet the technical requirements. In high-pressure filling, the O-ring rubber seal between the small gas cylinder filling and sealing fixture and the gas cylinder is poor due to the linear seal of the O-ring and the fact that the surface of the small gas cylinder is not machined. Because the amount of gas leaking out of each small gas cylinder is different, it is difficult to control the amount of gas inside the small gas cylinder, resulting in a low filling success rate.

[0003] This technical solution employs a novel "bottle head sealing gasket" structure, primarily addressing the sealing issue between the small gas cylinder filling and sealing fixture and the small gas cylinder itself, thereby resolving gas leakage during filling. The small gas cylinder filling and sealing fixture aligns perfectly with the contact surface of the small gas cylinder's end cap, achieving a seal under the tightening force of the small gas cylinder. The surface shape conforms to the equation of the small gas cylinder's end cap shape. The function of this technical solution is to improve the sealing degree between the "small gas cylinder filling and sealing fixture" and the small gas cylinder, ensuring no gas leakage during actual filling operations and controllable filling weight. Its significance lies in improving the pass rate of small gas cylinder filling, reducing safety hazards and resource waste caused by gas leakage, while simultaneously improving production efficiency and product quality.

[0004] Existing technical solutions suffer from poor sealing between the gas cylinder filling and sealing fixture and the gas cylinder, resulting in serious gas leakage, and the filling weight of the gas cylinder is difficult to control. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a sealing gasket structure for a small gas cylinder filling and sealing fixture, which solves the technical problems of poor sealing effect between the small gas cylinder filling and sealing fixture and the small gas cylinder, resulting in serious gas leakage and difficulty in controlling the filling weight of the small gas cylinder.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sealing gasket structure for a small gas cylinder filling and sealing fixture, comprising a gasket body, wherein the gasket body is a stepped annular structure, the front diameter of the outer ring of the gasket body is larger than the rear diameter of the outer ring of the gasket body, and the inner ring of the gasket body, located at the rear end of the gasket body, has a rounded corner with an arc-shaped cross-section; this structural design allows the gasket body to better fit with the small gas cylinder, improving sealing performance; the stepped annular structure increases the stability of the gasket body, the larger front diameter of the outer ring facilitates installation and positioning, and the rounded corner at the rear end of the inner ring can better fit the shape of the small gas cylinder, further enhancing the sealing effect.

[0007] Preferably, the gasket body is installed at the connection between the sealing equipment and the small gas cylinder. The sealing equipment has a gasket seat facing the connection section of the small gas cylinder. The gasket body is installed at the lower end of the sealing equipment. An external thread is formed on the outer side of the lower end of the sealing equipment. A locking nut is threaded onto the sealing equipment via the external thread. The lower end of the locking nut is fitted onto the rear end of the gasket body. The gasket body is installed at the connection between the sealing equipment and the small gas cylinder, positioned by the gasket seat on the sealing equipment, and installed at the lower end of the sealing equipment. The external thread on the outer side of the lower end of the sealing equipment cooperates with the locking nut to fix the rear end of the gasket body, ensuring that the gasket body will not loosen during operation, thereby ensuring the reliability of the seal.

[0008] Preferably, the rounded corners of the gasket body are the same as the cross-sectional shape of the small gas cylinder neck; this design allows the gasket body to fit tightly against the small gas cylinder neck, minimizing the possibility of gas leakage and improving the quality and safety of the gas cylinder filling and sealing.

[0009] Beneficial effects

[0010] This invention provides a sealing gasket structure for a small gas cylinder filling and sealing fixture. This invention improves the sealing performance between the fixture and the small gas cylinder, preventing gas leakage during actual filling operations and ensuring controllable filling weight. It solves the problem of poor sealing between existing fixtures and the small gas cylinder, reducing safety hazards and resource waste caused by gas leakage. The stepped annular structure of the gasket increases stability, the larger diameter of the outer ring facilitates installation and positioning, and the rounded corner of the inner ring's rear end better matches the shape of the small gas cylinder, further enhancing the sealing effect. The rounded corner of the gasket matches the cross-sectional shape of the small gas cylinder's neck, ensuring a tight fit between the gasket and the neck, minimizing the possibility of gas leakage and improving the quality and safety of the small gas cylinder filling and sealing process. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the sealing gasket structure of the small gas cylinder filling welding and sealing tooling described in this utility model.

[0012] Figure 2 This is a schematic diagram of the original sealing gasket structure of the small gas cylinder filling welding and sealing tooling described in this utility model.

[0013] Figure 3 This is a schematic diagram of the gas cylinder filling and sealing fixture structure of the sealing gasket described in this utility model.

[0014] Figure 4 This is a schematic diagram of the assembly structure of a small gas cylinder, which is described in this utility model as a sealing gasket structure for a small gas cylinder filling welding and sealing tool.

[0015] In the diagram: 1. Small gas cylinder; 2. Washer body; 3. Bottle cap; 4. Main body; 5. Electrode; 6. Inflation end; 7. Connecting screw sleeve; 8. Locking nut; Detailed Implementation

[0016] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Detailed description follows.

[0017] Please see Figure 1-4 This utility model provides a technical solution: a sealing gasket structure for a gas cylinder 1 filling and sealing tool, including a gasket body 2. The gasket body 2 has a stepped annular structure. The diameter of the front end of the outer ring of the gasket body 2 is larger than the diameter of the rear end of the outer ring of the gasket body 2. The inner ring of the gasket body 2, located at the rear end of the gasket body 2, has an arc-shaped rounded corner. This structural design allows the gasket body 2 to better fit with the small gas cylinder 1, improving the sealing performance. The stepped annular structure can increase the stability of the gasket body 2. The larger diameter of the front end of the outer ring is beneficial for installation and positioning. The arc-shaped rounded corner of the rear end of the inner ring can better fit the shape of the small gas cylinder 1, further enhancing the sealing effect.

[0018] In this embodiment, the washer body 2 is further configured such that it is installed at the connection between the welding and sealing equipment and the small gas cylinder 1. The welding and sealing equipment has a washer seat facing the connection section of the small gas cylinder 1. The washer body 2 is installed at the lower end of the welding and sealing equipment, and an external thread is formed on the outer side of the lower end of the welding and sealing equipment. A locking nut 8 is threaded onto the welding and sealing equipment via this external thread. The lower end of the locking nut 8 is fitted onto the rear end of the washer body 2. The washer body 2 is installed at the connection between the welding and sealing equipment and the small gas cylinder 1, positioned by the washer seat on the welding and sealing equipment, and installed at the lower end of the welding and sealing equipment. The external thread on the outer side of the lower end of the welding and sealing equipment cooperates with the locking nut 8 to fix the rear end of the washer body 2, ensuring that the washer body 2 will not loosen during operation, thereby guaranteeing the reliability of the seal.

[0019] In this embodiment, the gasket body 2 is further configured such that the arc-shaped rounded corners are the same as the cross-sectional shape of the neck of the small gas cylinder 1; this design allows the gasket body 2 to fit tightly against the neck of the small gas cylinder 1, minimizing the possibility of gas leakage and improving the quality and safety of the gas filling and sealing of the small gas cylinder 1.

[0020] Its detailed connection methods are well-known technologies in this field; such as Figure 1-4 As shown, gasket 2 is installed at the connection between the sealing equipment and the small gas cylinder 1. A gasket seat is provided on the sealing equipment facing the connection section of the small gas cylinder 1, and gasket 2 is installed at the lower end of the sealing equipment. An external thread is provided on the outer side of the lower end of the sealing equipment, through which it is threadedly connected to the locking nut 8. The lower end of the locking nut 8 is fitted onto the rear end of gasket 2. The gasket seat on the sealing equipment positions gasket 2, ensuring that gasket 2 is installed in the correct position. Simultaneously, the engagement of the external thread on the outer side of the lower end of the sealing equipment with the locking nut 8 fixes the rear end of gasket 2, preventing it from loosening during operation and effectively ensuring the reliability of the seal.

[0021] The rounded corners of gasket 2 match the cross-sectional shape of the neck of the small gas cylinder 1. This design allows gasket 2 to fit tightly against the neck of the small gas cylinder 1, minimizing the possibility of gas leakage and significantly improving the quality and safety of the gas filling and sealing of the small gas cylinder 1. During the gas filling and sealing process of the small gas cylinder 1, when the small gas cylinder 1 is screwed into the sealing equipment, the inner curved surface of gasket 2 matches and contacts the curved surface of the end cap of the small gas cylinder 1. Under sufficient tightening force on the small gas cylinder 1, gasket 2 is pressed tightly against the small gas cylinder 1, achieving a good seal and thus achieving the goal of no gas leakage and controllable filling weight of the small gas cylinder 1, improving the filling pass rate of the small gas cylinder 1.

[0022] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A sealing gasket structure for a small gas cylinder filling and sealing fixture, comprising a gasket body (2), characterized in that, The washer body (2) has a stepped circular ring structure. The diameter of the front end of the outer ring of the washer body (2) is larger than the diameter of the rear end of the outer ring of the washer body (2). The inner ring of the washer body (2) and located at the rear end of the washer body (2) has a cross-section with an arc-shaped rounded corner.

2. The sealing gasket structure of the small gas cylinder filling welding tooling according to claim 1, characterized in that... The washer body (2) is installed at the connection between the welding and sealing equipment and the small gas cylinder (1). The welding and sealing equipment is provided with a washer seat facing the connection section of the small gas cylinder (1). The washer body (2) is installed at the lower end of the welding and sealing equipment. An external thread is provided on the outer side of the lower end of the welding and sealing equipment. The welding and sealing equipment is connected to a locking nut (8) through the external thread. The lower end of the locking nut (8) is fitted onto the rear end of the washer body (2).

3. The sealing gasket structure of the small gas cylinder filling welding tooling according to claim 1, characterized in that... The arc-shaped rounded corner of the gasket body (2) is the same as the cross-sectional shape of the bottleneck of the small gas cylinder (1).

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