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A peristalitic pump comprising a pump housing accommodating a hose. A hollow space surrounding the hose is provided between the outer wall of the hose and the pump housing. The ends of the hose are sealingly attached all around to corresponding supply and discharge ends of the pump housing. The pump

A peristalitic pump comprising a pump housing accommodating a hose. A hollow space surrounding the hose is provided between the outer wall of the hose and the pump housing. The ends of the hose are sealingly attached all around to corresponding supply and discharge ends of the pump housing. The pump housing is provided with connecting tubes for supplying a pressure medium to the hollow space and discharging the medium therefrom, in order to exert pressure at desired points of time on the outer wall of the hose. The hose has an elliptic cross-sectional form adjacent the supply end along a given trajectory. Starting from the supply end, which is circular in cross-section, the hose becomes gradually flatter and broader to give a minimal value and sequentially in the direction of the hose portion extending toward the discharge end become increasingly less flat and broad in the same manner until the circular cross-section is obtained. The hose has a constant wall thickness along the entire length between the supply end and the discharge end and a constant inner circumferential length of the cross-section.

대표청구항 ▼

A peristaltic pump comprising: a pump housing having a supply end and a discharge end; a pump hose having an outer wall, a supply end, and a discharge end and disposed within said pump housing, said supply and discharge ends of said pump hose being sealingly attached all around to said supply and di

A peristaltic pump comprising: a pump housing having a supply end and a discharge end; a pump hose having an outer wall, a supply end, and a discharge end and disposed within said pump housing, said supply and discharge ends of said pump hose being sealingly attached all around to said supply and discharge ends of said pump housing, respectively, said pump hose having a substantially circular cross-section at said supply end and a substantially elliptic cross-section over a portion thereof adjacent said supply end which, starting at said substantially circular cross-section, bcomes gradually flatter and broader to a given minimal value and subsequentially in the direction extending towards said discharge end of said pump hose becomes increasingly less flat and broad until the cross-section of said pump hose again becomes substantially circular, said pump hose having a substantially constant wall thickness along the entire length thereof between said supply end and said discharge end and a substantially constant inner cross-sectional circumference, and said pump hose and said pump housing defining a hollow space therebetween; and means provided in said pump housing for supplying a pressure medium to said hollow space and for discharging the pressure medium therefrom, whereby pressure is intermittently exerted on the outer wall of said pump hose.