GB1305729A - - Google Patents

Abstract

1305729 Counter-pressure filling device; dispensing measured quantities of liquid GIMSON & CO (LEICESTER) Ltd 21 Sept 1971 [2 July 1970] 32198/70 Headings B8N and B8T A device for filling kegs with liquid under pressure consists of two cylinders 10, 11 one of which is filled from a liquid supply whilst the other is emptied into the keg, the filling and emptying being controlled by trips 31, 32, 33, 34 which operate on a relay 52 and three-way valves 16, 17, each valve being connected to one cylinder and the liquid inlet 18 and outlet 20. When both cylinders are empty, gas is introduced into both cylinders through inlet 28 until a required pressure is recorded on the meter 30, whereupon the three-way valve 16 is set manually to introduce beer into the cylinder 10. When the cylinder is filled, the piston 12 is urged against the plunger (35), Fig. 2 (not shown), of trip 31 and a switch (40) is actuated, thereby opening an air passage from the pressure source 48 through line 53 to the relay 52, the trip 33 still being open since the piston 13 rests against the plunger of trip 33. The air pressure moves relay 52 so that air pressure from the source 46 acts, through line 23 on valve 16 to connect the cylinder 10 with the outlet 20, and through line 24 on valve 17 to connect the cylinder 11 with the beer supply. The piston 13 then moves upwards and piston 12 downwards until the trips 32, 34 and relay 52 reverse the valves 16, 17. The two three-way valves 16, 17 may be replaced by a valve unit (57), Fig. 3 (not shown), having two gear operated valve members (59), (60), the members being reciprocably and alternately connected to the beer inlet and outlet and operated in synchronism by a pneumatic cylinder (65). The volume capacity of the cylinders 10, 11 may be altered by means of a screw collar where pneumatic trips are provided. The cylinder (65) may be controlled by an electric-circuit having ferro-activated proximity switches TPS1, TPS2, BPS1, BPS2, Fig. 4, connected to a double solenoid pneumatic valve 74. The circuit, Fig. 5 (not shown), incorporates a counting device (80) to stop the operation of the device after a predetermined number of cycles, and a mechanism (82) which allows CO 2 to be blown through the valve 79 and the outlet pipes for a predetermined time.