Exhaust gas collecting device between sludge treatment

The utility model provides an exhaust gas collecting device between sludge treatment, including fan and main tuber pipe, the one end of main tuber pipe is connected with the fan, and a supplementary tuber pipe and many zhi fengguan are told to the other end, intercommunication between zhi fengguan directness and sludge treatment, even have a plurality of mobilizable gas collecting channels on the supplementary tuber pipe, every gas collecting channel all can be collected the inside waste gas that carries on between sludge treatment alone, be equipped with the overhead control valve on the main tuber pipe, be equipped with the auxiliary control valve on all supplementary tuber pipes. This device can adopt the local key mode of collecting waste gas of whole ventilation and gas collecting channel, can prevent the inhomogeneous defect of waste gas collection effectively, and this device can be according to the actual production condition, and frequency conversion control fan delivery and overhead control valve ha