Perlite expansion equipment based on spiral pipe head exchange to achieve cooling function

The invention discloses perlite expansion equipment based on spiral pipe head exchange to achieve a cooling function. The perlite expansion equipment comprises an expansion furnace body, spiral heat exchange pipelines, natural gas conveying pipelines, air conveying pipelines and air blowers; the expansion furnace body comprises a hearth and a hearth brick wall; the spiral heat exchange pipelines are arranged in the hearth and spirally laid on the inner wall face of the hearth brick wall side by side, and each spiral heat exchange pipeline is integrally formed by a top-end cylindrical hollow air exhaust pipe, a middle spiral pipe body and a bottom-end cylindrical hollow air feeding pipe; and the ends of the air conveying pipelines are connected with the cylindrical hollow air feeding pipesand the air blowers. According to the perlite expansion equipment, the inner wall of the hearth brick wall of the expansion furnace body is quickly cooled through cold air which flow unidirectionallyin the spiral heat exchang