Steady flow quantitative valve attaching pressure proportional control valve

摘要

(57) Abstract Objective Way at 1 units it can control from small capacity to large capacity,It does. Constitution Being serial in channel 11, two valves which it provides on the same axisSeat it makes penetrate completely on the center of 12, 13 and this respective seat,It is in valve rod opposing 24 and the respective seat, in spring 16As from pushing pressure is granted to valve closing direction, on high-level side the valveTo slide with the stick as one unit, on downstream side vis-a-vis valve rod freelyIn order to do, in the needle 14 which is provided, 15 and valve rod the needle of high-level sideAfter the opened valve engaging lately in the needle of downstream side, way it opens a valve, facilitiesColumn engagement section 25, with electrification in valve closing direction the diaphragmIn order to mind 17 and to make slide with valve rod the electromagnetic Drive section which is providedThe seat of 21 and high-level side after the passing the seat of downstream side deviationIn order to let flow very little capacity to the outlet side of the channel, the bypass aisle which is providedSeat 27 it opposes to that in 26 and this bypass aisleThe diaphragm valve chest 29 which with diaphragm valve 28 is providedWith, the diaphragm valve in opened valve direction the pushing the spring 30 which is overpowered and,In order inflow the fluid into the diaphragm valve chest, the communication path which is provided31 and it consists of, it controls fluid capacity by the communication path.