PUMP Russian patent published in 2001 - IPC

FIELD: mechanical engineering; liquid handling machinery. SUBSTANCE: pump has housing with suction and discharge holes, cover and working chamber which accommodates driving and driven working members furnished with mechanism to convey motion from driving to driven working members, and suction and discharge zones formed by outer surfaces of working members and outline of working chamber. Novelty is that outline of working chamber is formed by arcs of two intersecting circumferences, driving and driven working members are made in form of disks and mechanism conveying movement from driving working member to driven one is made in form of double-crank antiparallel-link mechanism. Centers of rotation of antiparallel-link mechanism cranks coincide with centers of arcs of working chamber outline. Diameters of working members are equal to length of connecting rod. Length of cranks is not greater than length of connecting rod, sum of length of both cranks and connecting rod is equal to diameter of circumference describing the arcs of outline of working chamber. Suction and discharge zones are variable in size, and suction and discharge holes are made in end face walls of housing and cover in area of intersection of circumferences describing working chamber. EFFECT: increased capacity of pump, reduced labour input in manufacturing, cut down friction losses. 10 dwg