| 摘要 |
For an addition device having a housing (1) for feeding pulverulent or granular bulk material from a storage hopper (7) into a water stream which flows through a housing duct (8), to achieve a uniform mixing with a presettable mixing ratio even with a varying water flow rate, it is proposed to transport the bulk material by motor-driven star wheel feeders (5) and to seal off the star feeder wheel chamber (13) from the feed space and the water space (8) with a metal-to-metal joint by a sleeve (3) formed in the manner of a water tap spigot. <IMAGE>
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