Sludge continuous feeding device and method for fire coal coupling sludge blending combustion system

The invention discloses a sludge continuous feeding device and method for a fire coal coupling sludge blending combustion system.The device comprises a sludge storage bin, a sludge conveying pipe and a coal feeder, the sludge storage bin is communicated with one end of the sludge conveying pipe, the other end of the sludge conveying pipe is communicated with the coal feeder, and the coal feeder is arranged in the sludge conveying pipe; and the amount of the sludge in the sludge conveying pipe entering the coal feeder is regulated and controlled by the coal feeder. By controlling the rotating speed of the screw stirrer and the feeding machine and the magnetic state between the fixed blade and the limiting blade of the feeding machine, the precise and stable feeding amount can be achieved, meanwhile, the load of single feeding is reduced, the risks of sludge blockage and equipment blockage are reduced, the feeding stability and reliability are improved, and in addition, the feeding efficiency is improved. By ar