Peristaltic pump

peristaltic hose pump comprising a rotatable rotor (14) by a shaft (12) and brake member (26) support which runs along part of the circumference of the rotor, being insertable between the element ( 26) support and the rotor (14) a flexible tube, the element (26) mobile support along a predetermined distance toward the rotor (14) by rotation of the shaft (12) actuating in a first direction of rotation (S), characterized in that for moving the element (26) is provided a support driving disc (46) provided with a guide (44) spirally and rotatable about the axis (12) drive.