Inflating and deflated device for a thin-walled sealed cylinder

Abstract

The invention relates to an inflation and deflation device applied to a thin-walled sealing cylinder, which is installed on the cylinder wall of the thin-walled sealing cylinder, and includes a fixed shaft sleeve, an inner sealing assembly, an outer sealing gasket, a nut, a tapered counterbore screw plug and a valve. The fixed shaft sleeve is in the form of a nut fixed at one end and a bolt with external thread on the pipe surface at the other end. A through hole matching the external thread diameter of the shaft sleeve, the threaded end of the fixed shaft sleeve passes through the through hole from the inner side of the sealing cylinder, and fixes the inner sealing assembly on the inner wall of the sealing cylinder, The outer sealing gasket and the nut are installed on the threaded end of the fixed shaft sleeve passing through the sealing cylinder, and the nut is tightened to press the inner sealing assembly and the outer sealing gasket on the sealing cylinder On the cylinder wall, a ventilation hole is provided at the center of the fixed sleeve, and the valve and / or the tapered countersunk plug are installed on the fixed sleeve.

Description

technical field [0001] The invention relates to an inflation and deflation device applied to a thin-walled sealed cylinder, which is applied in the technical field of aerial imaging. Background technique [0002] Temperature and pressure changes affect the imaging quality of aerial cameras, sometimes even fatally. For some aerial cameras, the lens is usually sealed to ensure a constant pressure environment. Due to the strict weight requirements of aerial cameras, lightweight design is generally required in order to meet the index requirements. Therefore, the sealing cylinders used to seal the lens are all thin-walled parts. In order to realize the filling and deflation of the sealed cylinder, it is generally filled with clean air or nitrogen. It is necessary to design a corresponding inflation and deflation device on the wall of the sealed cylinder, or process the filling and deflation holes on the cylinder wall, and install valves for inflation and deflation. Generally, t...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defects existing in the prior art, the present invention aims at the problem that the thin-walled sealing cylinder cannot be installed with an inflation and deflation valve to achieve inflation and deflation. The present invention provides an inflation and deflation device applied to the thin-walled sealing cylinder

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