Pressure supply structure of paper pulp filter sieve

The utility model relates to the technical field of paper pulp filtration, in particular to a pressure supply structure of a paper pulp filter sieve, which comprises a filter sieve drum and a paper pulp pressurizing mechanism mounted on the filter sieve drum, a filter screen is fixedly mounted in the filter sieve drum, and a pulp outlet pipe is fixedly arranged at the lower end of the filter sieve drum. The paper pulp pressurizing mechanism comprises a sealing cover, a piston pressurizing plate, a pipe cover, a second spring and a movable limiting block, a center hole is formed in the middle of the sealing cover, and a closed space is formed between the piston pressurizing plate and the paper pulp on the upper side of the filter screen through the piston pressurizing plate arranged in the filter screen drum. Paper pulp can be pressurized by moving the piston pressurizing plate downwards, then the paper pulp filtering speed is increased, operation is easy and convenient, sectional pressurizing can be achieved