FIELD: heat exchange.
SUBSTANCE: in heat exchanger containing first cylindrical pipe (2) and lead screw (3) passing inside said pipe (2) coaxially with it, on inner surface of first cylindrical pipe (2) there are guide grooves (22), and scavenger element (12) is attached to lead screw (3) so that during rotation of leadscrew (3) movement of cleaning element (12) in axial direction along guide grooves (22) is provided.
EFFECT: invention relates to heat engineering and can be used for cleaning of heat exchange tubes.
20 cl, 4 dwg
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