Air charging and discharging device applied to thin-wall sealing cylinder

Abstract

The invention discloses an air charging and discharging device applied to a thin-wall sealing cylinder. The air charging and discharging device is installed on the cylinder wall of the thin-wall sealing cylinder and comprises a fixed shaft sleeve, an inner sealing component, an outer sealing gasket, a nut, a conical counter bore screw plug and a valve. A nut is fixedly arranged at one end of the fixed shaft sleeve, the tube surface of the other end of the fixed shaft sleeve is provided with the bolt shape of external threads, through holes adaptive to the diameters of the external threads of the fixed shaft sleeve are arranged on the cylinder wall of the sealing cylinder, the inner sealing component and the outer sealing gasket, the threaded end of the fixed shaft sleeve passes through thethrough holes from the inner side of the sealing cylinder, the inner sealing component is fixed on the inner wall of the sealing cylinder, the outer sealing gasket and the nut are installed on the threaded end, penetrating out of the sealing cylinder, of the fixed shaft sleeve, the nut is screwed to tightly press the inner sealing component and the outer sealing gasket on the cylinder wall of thesealing cylinder, and the axis of the fixed shaft sleeve is provided with a vent hole, and the valve and / or the conical counter bore screw plug are / is arranged on the fixed shaft sleeve.

Description

technical field [0001] The invention relates to an inflating and deflating device applied to a thin-walled sealing cylinder, which is applied to the technical field of aerial imaging. Background technique [0002] Temperature and pressure changes affect the image quality of aerial cameras, sometimes 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 to meet the index requirements. Therefore, the sealing cylinders used to seal the lenses are all thin-walled parts. In order to realize the inflation and deflation of the sealed cylinder, generally clean air or nitrogen, it is necessary to design a corresponding inflation and deflation device on the wall of the sealed barrel, or process the filling and deflation holes on the wall of the barrel, and install a valve for inflation and deflation. Generally, the valve interface is a s...

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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