Extrusion device for drilling pressurized water slurry replacement and construction process

The invention relates to the technical field of drilling engineering grouting, in particular to an extrusion device for drilling pressurized water slurry replacement and a construction process. The extrusion device comprises a pipeline and a device pipe, the inner side of the pipeline is spirally connected with the device pipe, the right end face of the device pipe is fixedly connected with a detection device, a sealing frame is arranged on the inner side of the upper portion of the device pipe, threads are arranged on the outer side of the sealing frame, the sealing frame is spirally connected with the device pipe through the threads, a rubber extrusion plug is arranged on the inner side of the sealing frame, a lifting device is fixedly connected to the upper end face of the rubber extrusion plug, and a discharging device is fixedly connected to the right side of the upper end face of the sealing frame. According to the device, through the arrangement of the discharging pipe, a valve,the rubber extrusion plu