| 摘要 |
<p>PURPOSE:To prevent the operation failure of a drain valve and to improve the reliability of automatic drain by opening the drain valve on draining by the pressure difference of compressed air. CONSTITUTION:Compressed air from an air compressor is introduced into a water separation chamber 17 to separate condensed water in the compressed air by the cyclone effect, then moisture is removed in a drying chamber 11 to let the air flow out from an outlet port. A valve chamber 33 adjacent to the water separation chamber 17 is divided into a 1st pressure chamber 36 and a 2nd pressure chamber 37 by a drain valve 38 and the 1st pressure chamber 36 communicates with the water separation chamber 17 and the 2nd pressure chamber 37 communicates with the drying chamber 11 through an exhaust restriction 38. On draining, a solenoid valve communicating with the 2nd pressure chamber 37 is opened to rapidly lower the pressure of the 2nd pressure chamber to the atmospheric one. The drain valve 35 is moved by the pressure difference between the 1st pressure chamber 36 and 2nd pressure chamber 37 to open a drain port 32 in the bottom part of the valve chamber 33. Thus, an evil influence due to rust or freezing is removed by using not a solenoid valve but a non-magnetic substance.</p> |
