System for protecting a container treatment device by means of an electron beam

Treatment device for sterilizing containers by an electron beam, comprising

• a carousel comprising a rotary holding plate, supporting a plurality of treatment stations arranged with regular angular spacing, each said treatment station comprising sterilization means which include an electron beam emitter and holding means for holding a container under said emitter, said emitter being able to emit an electron beam passing through an upper opening of a container supported by said holding means in order to sterilize said container,
• a protection system for stopping rays emitted by the emitters, and
• said protection system comprising an open stationary channel, in the form of a ring-shaped segment mounted in a stationary manner under said holding plate and forming with the holding plate a protective chamber wherein the holding means supporting the containers moves, said channel having an open upstream end for an inlet of the containers to be treated into the protective chamber and an open downstream end for an outlet of the treated containers from the chamber.