▎ 摘　　要

NOVELTY - The utility model relates to the technical field of water conveying and heating, especially relates to a heat preservation heating water belt for water purifying car, freezing the hydrophobic pipeline under the low temperature environment of -41 degrees centigrade; a heat preservation heating water belt for water purifying car; the heat preservation heating water belt is made of flexible material; the insulating heating water belt from inside to outside in turn comprises an inner layer water belt of annular structure, a heating body, an insulating layer and an outer layer water belt; the heating body is a flexible graphene electric heating grid cloth; the flexible graphene electric heating grid cloth comprises mutually staggered graphene heating wire arranged in net shape; net-shaped woven yarn and silver-plated copper wire; the outer side of the inner layer water belt is provided with a sensing temperature controller probe and connected with the temperature control device set on the water purifying mill; the water conveying pipeline is heated and insulated, keeping the long-distance conveying of the water under the constant temperature condition; it has good development prospect in the water conveying heating technology field.