Pneumatic fireproof valve convenient to install

The utility model discloses a pneumatic fireproof valve convenient to install in the technical field of fire fighting equipment. The mounting frame is arranged on one side of the main body and is connected with the outer wall of the main body in a sleeving manner; the fixing mechanisms are arranged at the two ends of the main body, are connected with the mounting frame in a sleeving manner and are used for conveniently mounting the main body; and the pop-up mechanism is arranged at the bottom end of the inner wall of the mounting frame, is connected with the main body in a sleeving manner and is used for automatically popping up the main body. By arranging the fixing mechanism, the fireproof valve can be conveniently installed, a limiting insertion block is slidably inserted into an installation frame through driving of a main body and is connected with an extrusion push rod in a sleeved mode, and meanwhile a lifting clamping plate drives a lifting sliding plate to extrude a second spring under extrusion of t