Patent ID: 7404833

Claim:
A rotary pulse type filter dust collector comprising: a dust collector body having an intermediate plate; a number of filter bags arranged vertically in the dust collector body; a compressed air tank located inside a machine room formed on the intermediate plate, and movably mounted above the intermediate plate by means of driving means, the compressed air tank receiving compressed air introduced from the outside; a number of nozzles perforating the compressed air tank; diaphragm valves connected to the nozzles respectively and correspondingly; mechanical 3-way valves for driving the plurality of nozzles and diaphragm valves of the compressed air tank by predetermined groups in order to clean the corresponding filter bags, the mechanical 3-way valves of the same number as the groups being mounted in the compressed air tank; a number of protrusions formed on the inner walls of the machine room to change the air flow direction of the 3-way valves by pressing manipulation levers of the 3-way valves; a reduction motor and an mechanical transmitting device for driving the compressed air tank; and an inverter controller for controlling a cleaning interval of the dust collector by controlling the rotational speed of the driving means.