▎ 摘　　要

NOVELTY - The device has heat preservation base box (1) whose left end and right end vertical plate are fixedly provided with a vertically upward heat insulating outer clamping plate (2). The insulating outer clamping plate comprises a shaping strip block (201). The inner cavity of the insulating outer clamping plate is a hollow structure. The outer end side wall of the inner cavity of the insulating outer clamping plate is vertically and uniformly fixed with a horizontal shaping strip block. The opposite inner side walls of two insulating outer clamping plates are fixedly provided with a vertical heat storage box (3). A circulating mechanism (4) is fixedly provided in the middle portions of the upper end and the lower end of the heat storage box. An air pipe box (5) is fixedly and hermetically installed in the heat storage boxes at the left and right ends of the circulation mechanism. USE - Aluminum alloy sand casting based heat preservation device. ADVANTAGE - Since the T-shaped bearing plate is fixedly installed on the bottom plane of the inner cavity of the base box, the surface heat of the bearing plate is made uniform by using good thermal conductivity of graphene and the generation of heat spots can be avoided. DESCRIPTION OF DRAWING(S) - The drawing shows an upper perspective view of the heat preservation device. Heat preservation base box (1) Heat insulating outer clamping plate (2) Vertical heat storage box (3) Circulating mechanism (4) Air pipe box (5) Shaping strip block (201)