Household thermos scale removal device

The utility model discloses a household thermos scale removal device, and relates to the technical field of removal of dirt on inner walls of semi-closed vessels. The household thermos scale removal device comprises a supporting base and a stepped shaft, and the supporting base is fixed to the mouth of a thermos. The stepped shaft has the effect of connecting brushes with a motor, a bearing is installed on the stepped shaft, the small motor is installed at the top of the stepped shaft, in this way, automatic rotation of the brushes can be controlled, and the scale brushes can clean the inner wall of the thermos in rotation of the stepped shaft. The household thermos scale removal device has the advantages that the brushes are thin and long, the lower parts of the brushes are bent, and therefore the side wall and the bottom arc part of the thermos can be comprehensively cleaned; four rectangular through grooves are distributed in each of the two sides of the stepped shaft, spokes penetrate through the through grooves to connect a long shaft with connecting rods, the distance between the brushes and the stepped shaft can be freely adjusted through rotation of the connecting rods, stretch and retraction of the brushes can be controlled by pulling the long shaft, and therefore the device can enter or exit from the thermos freely; the spokes are connected with the long shaft directly through hasps, and therefore assembly is easy; the middle end of the long shaft protrudes and limits the moving stroke of the long shaft, and therefore the spokes are protected; a round brush at the bottom is in threaded connection with the stepped shaft, and therefore replacement is convenient.