| 摘要 |
A multi-channel stepped motor operated gas adjusting valve is provided. The valve comprises a valve shell (2), a reduction motor (1), a locator (3), a gas flow distributor (4) and a locator rotation angle detecting mechanism. The gas flow distributor (4) has a disk (4-1) which is tightly attached to a hard hollow washer (8). An inner wall of the valve shell (2) is provided with locating ends corresponding to a group of locating nodes (3-2) to form the locator rotation angle detecting mechanism. Each locating node is placed corresponding to a gas flow distribution groove (4-3) of the same sequence. The inner wall of the valve shell (2) is also provided with stopping blocks (2-2) at a beginning state and an ending state of the locator (3). The valve enables accurate control by utilizing an action position feedback signal and a control circuit, and enables multi-position stepped adjustment on gas flow rate upon multi-channel gas passages simultaneously. The valve can independently cut the multi-channel gas passages. |
