LIQUID BATCHER Russian patent published in 1995 - IPC

FIELD: batching liquids. SUBSTANCE: batcher has axially arranged normally open inlet and normally closed outlet valves. The inlet valve has housing whose batching chamber is provided with the valving member with a seal interacting with the seat surface of the housing. A spring is interposed between the housing and adjusting nut mounted on the valving member. The valving member of the inlet valve is a housing of the outlet valve comprising also a valving member mounted inside the batching chamber of the valving member. The valving member is constructed as a plunger with a seal which interacts with the seat surface of the valving member opposite to the inlet opening. A spring is interposed between the valving member and adjusting nut mounted on the valving member. The rigidity of the spring is greater than the spring mentioned above. The valving member of the inlet valve has T-shaped passageway inlets of which underlie the seal and outlet is provided with a check valve. The adjusting screw is mounted for permitting interaction with the valving member of the outlet valve. A stop serves for adjusting a liquid batch. The design allows inlet and outlet valves to be actuated one after another for sucking and discharging. As a result, a batch of liquid is measured off, the spring can being adjusted during operation with the adjusting nuts. EFFECT: improved accuracy of batching. 1 dwg