Machines, pumps, or pumping installations having flexible working members

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F04Liquid pumps F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS

F04B43/00Machines, pumps, or pumping installations having flexible working members

F04B43/0009Special features F04B43/0018the periphery of the flexible member being not fixed to the pump-casing, but acting as a valve F04B43/0027without valves F04B43/0036the flexible member being formed as an O-ring F04B43/0045with a number of independent working chambers which are actuated successively by one mechanism F04B43/0054particularities of the flexible members F04B43/0063bell-shaped flexible members F04B43/0072of tubular flexible members F04B43/0081systems, control, safety measures F04B43/009leakage control; pump systems with two flexible members; between the actuating element and the pumped fluid F04B43/02having plate-like flexible members F04B43/021the plate-like flexible member is pressed against a wall by a number of elements, each having an alternating movement in a direction perpendicular to the plane of the plate-like flexible member and each having its own driving mechanism F04B43/023double acting plate-like flexible member F04B43/025two or more plate-like pumping members in parallel F04B43/026each plate-like pumping flexible member working in its own pumping chamber F04B43/028with in- or outlet valve arranged in the plate-like flexible member F04B43/04Pumps having electric drive F04B43/043Micro pumps F04B43/046with piezo-electric drive F04B43/06Pumps having fluid drive F04B43/067the fluid being actuated directly by a piston F04B43/073the actuating fluid being controlled by at least one valve F04B43/0733with fluid-actuated pump inlet or outlet valves; with two or more pumping chambers in series F04B43/0736with two or more pumping chambers in parallel F04B43/08having tubular flexible members F04B43/082the tubular flexible member being pressed against a wall by a number of elements, each having an alternating movement in a direction perpendicular to the axes of the tubular member and each having its own driving mechanism F04B43/084the tubular member being deformed by stretching ou distersion F04B43/086with two or more tubular flexible members in parallel F04B43/088with two or more tubular flexible members in series F04B43/09Pumps having electric drive F04B43/095Piezo-electric drive F04B43/10Pumps having fluid drive F04B43/107the fluid being actuated directly by a piston F04B43/113the actuating fluid being controlled by at least one valve F04B43/1133with fluid-actuated pump inlet or outlet valves; with two or more pumping chambers in series F04B43/1136with two or more pumping chambers in parallel F04B43/12having peristaltic action F04B43/1207the actuating element being a swash plate F04B43/1215having no backing plate (deforming of the tube only by rollers) F04B43/1223the actuating elements F04B43/123using an excenter as the squeezing element F04B43/1238using only one roller as the squeezing element, the roller moving on an arc of a circle during squeezing F04B43/1246the roller being placed at the outside of the tubular flexible member F04B43/1253by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing F04B43/1261the rollers being placed at the outside of the tubular flexible member F04B43/1269the rotary axes of the rollers lying in a plane perpendicular to the rotary axis of the driving motor F04B43/1276Means for pushing the rollers against the tubular flexible member F04B43/1284Means for pushing the backing-plate against the tubular flexible member F04B43/1292Pumps specially adapted for several tubular flexible members F04B43/14having plate-like flexible members