WATERMEASURING COUNTER Russian patent published in 2001 - IPC

FIELD: water supply systems. SUBSTANCE: proposed counter has body with impeller, reduction gear of counting mechanism, roller-type reading unit and filter with supply nozzle arranged inside body. Impeller is made in form of band spiral with rectangular blades fitted with brushes made from elastic material and mounted within first turn at angle of 90 deg. relative to outer surface of spiral. One end of spiral is connected with shaft and other end is rigidly secured on flexible plate provided with holes and detachably connected with ear by means of adjusting screw; ear is fitted on roller which is movable in groove available on inner surface of body. End face of body has port with closing hatch cover. EFFECT: enhanced sensitivity threshold; extended range of flow rates being measured. 3 dwg