LIQUID MEDIA PUMPING DEVICE Russian patent published in 2003 - IPC

FIELD: hydromechanical engineering; simultaneous pumping of different liquid media. SUBSTANCE: device has cylindrical tanks each accommodating inner space separator forming delivery and actuating chambers. Flexible diaphragm is coupled with stiff supporting members disposed along generating lines of cylindrical tanks. It also has pipelines for inlet and outlet of liquid media being handled and pipelines for actuating medium inlet and outlet communicating with tanks on different sides of separator through controllable valves. Diaphragms are cylindrical in shape. Each tank accommodates pressurizer for engaging diaphragm. Pressurizer is made in the form of stiff perforated plates secured to supporting members arranged along generating lines of tanks to obtain convex form of plates. Each plate is symmetrically facing center line of tank with its convex side to form delivery chamber between plate secured with adjacent supporting members and part of tank generating line between same supporting members. Number of delivery chambers equals that of liquid media being handled; length of plates equals that of part of cylindrical-tank generating line between adjacent supporting members. Ratio of cross-sectional areas of delivery chambers equals that of volumetric flowrate of liquid media being handled. In addition pressurizer plates are faced with low-friction material such as fluoroplastic. Cylindrical separator may be built of separate flat sheets joined to pressurizer plates at points of their connection to supporting members. EFFECT: provision for simultaneous pumping of liquid media whose volumetric flowrate ratio is controlled. 3 cl, 8 dwg