The utility model relates to the technical field of mesh belt processing equipment, specifically a high-temperature resistant mesh belt heat treatment processing device, including a heat treatment processing device body, the heat treatment processing device body includes a primary heating furnace, a secondary heating furnace, and a heat source box, a heat source fan is arranged in the heat source box, the heat source fan is connected to a tee through a main air duct, the tee is respectively connected to the primary heating furnace and the secondary heating furnace through a branch air duct, one end of the secondary heating furnace extends from the outside of the heat treatment processing device body through an external circulation air duct and then enters from the top of the heat treatment processing device body to connect to the primary heating furnace, and one side of the bottom of the primary heating furnace is connected to the side of the secondary heating furnace away from the external circulation air duct through an internal circulation air duct.
The utility model arranges a primary heating furnace, a secondary heating furnace, and a heat source box in the inner cavity of the heat treatment processing device body, and heat energy circulates in the primary heating furnace and the secondary heating furnace, which greatly improves the utilization rate of heat energy, improves the heat processing efficiency, and reduces the cost.