| 摘要 |
<p>PURPOSE: To rotate a valve to a closing position for defining exhaust gas introduction to a specified filter unit by a simple mechanism and to simplify motor control. CONSTITUTION: 6 filter units 8 are provided in parallel in a housing 2 plotted into an exhaust gas introducing side and a discharging side by a plotting plate 3. In each filter unit 8, its opening parts 8a are arranged at equal intervals in a peripheral direction around a rotary shaft 20 provided in the housing 2. A valve 21 capable of selectively opening/closing each opening part 8a is provided in the rotary shaft 20 so as to be integrally rotated. A gear train 28 having a reduction ratio of 1/6 is provided between the output shaft 23a of a motor 23 for driving the rotary shaft 20 and the rotary shaft 20. A rotary sliding switch is fitted to the output shaft 23a of the motor 23 so as to be integrally rotated, when an operation command is inputted from a controller 19, an operation is started and automatically stopped after one rotation of the output shaft 23a.</p> |
