Bitumen binder injection device for use in road work, has mixing chamber with annular insulation room defined between internal and external wall, and liquid injecting unit engaged to opening of mixing chamber

摘要

The device has a mixing chamber (10) with an internal wall (11) and an external wall (12) laid out in a coaxial manner to form an annular insulation room (13). The insulation room is defined between the internal wall and the external wall. A liquid injecting unit (17) is engaged in an opening of the mixing chamber by crossing the external wall, internal wall and the insulation room.