Abstract: Disclosed is a flexible pulping machine with anti-clogging devices for a thermal power plant, including a pre-positioning unit, which includes a fixed base, a connecting plate, and a clamp. An end face of the connecting plate is connected to the bottom of a vibrator D, and the connecting plate includes a bulge, which penetrates the fixed base and extends into the interior thereof. The clamp is snap-fitted with the bulge, thereby achieving the fixation between the fixed base and the connecting plate. With the fitting between the connecting plate and the fixed base, the vibrator can be quickly mounted at a position close to the discharge port of the storage tank. When the vibrator is started, its vibration can cause continuous rapping on the side wall of the storage tank to make the material inside move, thereby facilitating the discharge of the raw limestone accumulated at the discharge port.