Dry ice blasting device for removing incrust from surface, has supply line extending to flow passage and open into injection passage that extends with axis of flow passage and opens into expansion chamber

摘要

The device has a flow passage (14) for a carrier gas forming a blasting nozzle (12) at a downstream end. A supply line (22) for liquid carbon dioxide opens into an expansion chamber (26) coaxially accommodated in the flow passage. The expansion chamber is formed by a pipe (20) held at the upstream end by a holder passed through the flow of carrier gas in the flow passage, where the supply line extends to the flow passage and opens into an injection passage (24) that extends in parallel with the axis of the flow passage and opens into the expansion chamber.