Pipeline butt joint device for fire engineering

The utility model discloses a pipeline butt joint device for fire-fighting engineering, and relates to the technical field of pipelines for fire-fighting engineering, the pipeline butt joint device comprises a pair of frames and a pair of U-shaped seats, a screw rod is rotatably installed between two side wall surfaces in each frame, one end of the screw rod penetrates through the side wall surfaces of the frames, a limiting assembly is arranged at the penetrating end of the screw rod, and the U-shaped seats are arranged on the U-shaped seats. The frame is fixed to the wall of a fire-fighting pipeline, the lead screw is rotated to drive the movable block to move, so that the U-shaped base is arranged above a connecting flange of the fire-fighting pipeline, the lifting assembly drives the U-shaped base to be buckled, and a flange plate is arranged in a groove of the U-shaped base. And gaps at the flange connecting positions are sealed through the sealing gaskets, so that the flange plates are protected, the ef