Inner wall dirt cleaning device of pipeline

The invention discloses an inner wall dirt cleaning device of a pipeline. The device comprises a control operation box and a driving motor, wherein the control operation box and the driving motor are connected through a support frame; one end of a rotary adjusting shaft is connected with the support frame through a first bearing, and the other end of the rotary adjusting shaft is in threaded connection with a first threaded column; one end of the first threaded column is fixedly connected with a mounting block located in the control operation box; support sliding plates are fixedly connected to the top and the bottom of the mounting block; a movable sliding plate is arranged at one side of each support sliding plate; two support plates are fixedly connected to the control operation box; one end of each movable sliding plate is fixedly connected with a mounting base located outside the control operation box; the mounting base is connected with the support plate through a plurality of extension springs; and a s