Cylinder filling adaptor

Abstract

The invention provides a cylinder filling adaptor, which aims to solve the problem that the conventional cylinder filling adaptor has the drawbacks of having low sealing and airtight performance and damaging a cylinder component, and comprises an inner core and a connecting sleeve, wherein the inner core is internally provided with an air flue, an elastic body is sleeved around the outside of a connection part at the near end of the inner core, and the outer side, adjacent to the connection part, on the periphery of the inner core is provided with a protrusion; the connecting sleeve is comprised of a connecting section and a thrust section, the connecting section has a cylinder structure with a positively-rotatable internal threads, and the thrust section is an inner step arranged at the far end of the connecting sleeve, the connecting sleeve is sleeved on the inner core from the far end of the inner core with the thrust section clamped at the position of the protrusion of the inner core and the connecting section matched with the positively-rotatable internal thread at the external wall of the inflation inlet to make the connection part, with the elastic body, of the inner core enter the cylinder part at the inner wall of an inflation inlet to form sealed fit. The cylinder filling adaptor has the advantages of avoiding gas leakage in a gas filling process and avoiding damaging the cylinder components in installation and use.

Description

technical field [0001] The invention relates to a connection device for filling gas into a gas cylinder, in particular to a gas cylinder filling joint. Background technique [0002] In the prior art, after one end of the gas cylinder filling joint is aligned with the filling port of the gas cylinder, the other end must be aligned with the safety valve of the gas cylinder and clamped to fix the gas cylinder filling joint. One end aligned with the filling port of the gas cylinder is connected to inflate the gas cylinder. The disadvantages of the above technical solution are: first, the cooperation between the filling joint of the gas cylinder and the gas charging port is a spherical seal, which belongs to the "hard-to-hard" sealing method, the sealing effect is poor, and it is easy to leak; second, due to the gas charging port and the safety The valve is not in the same axis, and the filling joint of the gas cylinder is fixed by the safety valve so that the filling joint of t...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the defects of poor sealing effect, easy gas leakage and easy damage to gas cylinder components existing in the existing gas cylinder filling joints, the present invention provides a gas cylinder filling joint, which can ensure no gas leakage during the filling process and at the same time Cylinder filling fittings are installed and used without damage to cylinder components

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