Groove device is prevented sinking by U type groove flotation device

The utility model relates to a groove device is prevented sinking by U type groove flotation device, intercommunication no. 1 set up along the horizontal direction on the main air -supply pipeline ofthis U type groove flotation device air feed system air loop duct, the intercommunication has four at least standpipes on this air loop duct, and all standpipes distribute along U type groove all around, and the lower extreme of each standpipe extends to the bottom in U type groove four corners the peripheral cover of standpipe has the sleeve. The utility model has the advantages that: borrow original air feed system, effectively solved the problem that the coarse grain sinks the groove and sits the ore deposit, overcome former flotation device center air feed and can't effectively promote thedefect that the four corners coarse grain amassed the ore deposit with the stirring, but improved flotation effect, enlarged the adaptability of U type groove flotation device to the granularity. 本实用新型涉及种U型槽浮选机防沉槽装置，在该U型槽浮选机供