Dust collecting system who has anti -blocking device on cement manufacture line, converter (6) are connected with partition turbin generator (2) electricity, separate to install on the wheel (3) to be used for detecting and separate wheel pivot pivoted test the speed switch (7), be equipped with current transmitter (8) that are used for measuring current on the lifting machine, signal output part and the signal input part signal connection of DCS system (5) of switch (7) and current transmitter (8) test the speed, the frequency of the signal output part of DCS system (5) control converter (6). The utility model discloses the advantage is: 1, alleviate staff intensity of labour. 2, avoid down the inhomogeneous equipment damage that causes of ash. 3, trouble information is accurate reliable, and information is clear and definite, easily the investigation.