ES2112132A1 - Peristaltic pump - Google Patents

Abstract

The pump comprises a plurality of eccentric discs 30, arranged along a flexible tubular conduit 10 via the inside of which the fluid to be pumped circulates, and arranged on a common rotational axis 2 in such a manner that the eccentricity of each disc is offset angularly with respect to that of the adjacent parts. The discs actuate a plurality of impeller elements 20 with a substantially alternating (reciprocal) movement between a first position, in which the impeller element 20 presses a section of the conduit 10 against a fixed plate 4, and a second position, in which the impeller element 20 does not exert any pressure on the section of the conduit 10. The impeller elements advantageously comprise a circular ring 21 arranged around its eccentric actuation part 30, and a radial projection 22 outside the ring whose free end is in contact with the associated section of the flexible tubular conduit 10. It makes it possible to decant fluids with very little agitation, working with flow rates and suction rates which are greater than those achieved with known peristaltic pumps and consuming less power.