Abstract: A treatment device (1) for flowable material comprises a container body (2) suitable for receiving a predefined quantity of said flowable material and delimited by a wall (3), at least one radiating device (20, 30) which radiates infrared radiation to heat said flowable material in said container body (2), a cleaning device (10, 11, 12) fixed at one end thereof (11a) to a base (110, 6) of said container body (2) and rotatable around an axis (X) of said container body (2), and a cleaning device (10, 11, 12) provided with a scraping device (12) provided at an end portion (1 ib) of said cleaning device (10, 11, 12) opposite said first end (11a) and arranged to run in the rotation of said cleaning device (10, 11, 12) over at least one segment (T) of a free stretch (3?) of the said wall (3) defined between a free surface (S) of said material and a mouth (2?) of said container (2) in order to scrape off any residues of said flowable material from said at least one segment (T) of said free stretch of wall (3?).