FLOW METER TYPE LIQUID FILLING APPARATUS

摘要

PROBLEM TO BE SOLVED: To keep a liquid pressure constant near a filling nozzle of a rotary flow meter liquid filling apparatus and further keep a filling amount for a container constant. SOLUTION: Each of air supplying flow passages 72a to 72d having different flow rates is connected in parallel with a storing tank 46 for supplying liquid to a filling nozzle. Each of air discharging flow passages 75a to 75d having different flow rates is connected in parallel. Solenoid valves 74a to 74d and 77a to 77d are installed at each of the air supplying passages and the air discharging passages. A common air compressor 71 is connected to an extremity end of each of the air supplying passages and the extremity end of each of the air discharging flow passages is released to the surrounding atmosphere. A liquid pressure sensor 43 is installed near the filling nozzle. When the liquid pressure is increased or decreased out of a predetermined range, any one of the solenoid valves is opened or closed by a control device 78, air is supplied into the storing tank or air is discharged out of the storing tank and an air pressure within the storing tank is controlled to keep the liquid pressure near the filling nozzle constant.