UNIVERSAL MODULE TO ENSURE OPERATION OF FILTERING GAS MASK IN ISOLATING MODE Russian patent published in 2024 - IPC A62B7/04 A62B7/10 

FIELD: gas masks.

SUBSTANCE: invention relates to devices for protection against poisonous and harmful substances, in particular with individual breathing apparatus. Universal module for providing the operation of the filtering gas mask in the insulating mode comprises a housing with a cover, an inlet fitting for connection to a compressed air source connected to the inlet valve, and an operating mode switch, wherein the module is equipped with a spring-loaded drive rod, a nozzle, a spring-loaded mechanical shut-off valve, a control valve, a pneumatic lift valve, a spring-loaded outlet valve, membrane tightly fixed inside the housing and dividing the housing into a constant pressure cavity combining the spring-loaded mechanical shutoff valve and the pneumatic lift valve, and a balancing pressure cavity extending under the outlet valve seat into a channel with a nozzle above the outlet valve seat to form a control chamber and into the inlet valve channel, wherein on the cover with the housing there are coaxially located screw neck with a reed inhalation valve and a screwed neck with a cylindrical locking device of the reed valve installed in it, the inlet valve is made with a stem and a headpiece, operating mode switch is made two-position, mechanically interacting with the shut-off valve and the inlet valve tip, the spring-loaded drive rod is equipped with a thrust heel for the pneumatic lift valve and is pivotally connected with the housing of the cylindrical blocker of the reed valve and the housing, control chamber has elastic side walls, on one side are rigidly fixed along the contour in the housing, and on the other side they are connected to the outlet valve, besides, the membrane has no contact with atmosphere and mechanical connection with the control valve.

EFFECT: increased efficiency and efficiency of respiratory protection means in contaminated atmosphere, level of protection against external effects, as well as reduced weight and size characteristics.

1 cl, 4 dwg