DEVICE FOR CONTROL OVER FLOW RATE Russian patent published in 1994 - IPC

FIELD: instrumentation engineering. SUBSTANCE: device for control over flow-rate has body with hole in its wall communicating with internal space of body and throttle gear. Salient feature of device lies in fitting of it with bushing placed inside body and coupled to it and at least two pushers of oval shape located uniaxially and built integral with rod positioned inside body. One end of rod is thread-connected to bushing, the other one is passed through sealing unit and is attached to fly wheel. Two throttle gears include sleeves anchored on body with nuts and located uniaxially to small axes of ovals of pushers. Nuts and sleeves have through holes. Shanks interact with oval surfaces of pushers, needles and springs placed uniaxially between themselves and shanks. EFFECT: device is especially efficient in measurement of microdoses of components to be mixed. 1 dwg