Automatic external wall washing device for yard, has brush elements provided with contact units for contacting elements with wall, where elements are inclined at variation of section of wall to maintain contact of element to tank

摘要

The device has brush elements (1-3) provided with side by side maintaining units for maintaining the brush elements side by side to cover a surface of an external wall of a rotary concrete container (4). The elements are provided with contact units for contacting the elements with the external wall, during washing cycle that is effected by rotation of the container and by introducing washing water. The elements are inclined at variation of section of the wall in order to maintain the contact of the elements to the tank.