Filtration window of filter screen is changed to pull formula

The utility model provides a filtration window of filter screen is changed to pull formula, includes the inside filter equipment of casing and casing, the casing includes shell body and interior casing, and the inner shell position is in the shell body, and the bottom surface both sides are equipped with first slide rail in the shell body, and interior casing is through fixing the pulley and firstslide rail sliding connection in lower plate bottom surface both sides, and filter equipment includes a plurality of air purification filter screens, and the indoor side of shell body is equipped with the door closure, and hinge connection is passed through to door closure one end bottom the shell body, and the indoor side of door closure is connected with the fan. This filtration window of filter screen is changed to pull formula can carry out the air purification filter screen convenient and fast's change, and the very big people that have made things convenient for washd and maintain filtering window's later stage