A leak-free flue baffle designed specifically for heating furnace chimneys

Thread Content

This post was last edited by www.lyxgsh.com on 10/8/2019 at 11:58. In the technical field, this utility model relates to the technical area of heating furnace chimneys; more specifically, it concerns a leak-free flue baffle designed specifically for heating furnace chimneys. Background Technology: A heating furnace is a device used to heat materials or workpieces to the forging temperature, and it is employed in a wide range of industries such as petroleum, chemicals, metallurgy, machinery, heat treatment, surface treatment, building materials, electronics, materials science, light industry, daily chemicals, and pharmaceuticals. Existing heating furnaces do not have high requirements regarding chimney dampers; these dampers cannot be closed completely, otherwise the burner of the heating furnace will shut down, leading to a shutdown incident. Therefore, a certain degree of leakage is allowed in the chimney dampers of heating furnaces. As environmental requirements become increasingly stringent, the reuse of waste heat is becoming more common. Waste heat recovery involves using a fan to draw the hot flue gas emitted from the heating furnace through the chimney into a heat exchanger, thereby enabling the reuse of energy. The inlet for the fan is located below the chimney damper, and it is necessary to close this damper; if there is a leak in the damper, cold air or the heated air being recycled can flow back into the heat exchanger, resulting in energy waste. Given these circumstances, existing zero-leakage butterfly valves fail to fully meet the requirements for chimney dampers in heating furnaces, as they are expensive, heavy, suitable only for small diameters (≤2000), and allow only a single valve disc to be used. Effective solutions have not yet been proposed for the problems in related technologies. Content of the utility model: The objective of this utility model is to provide a leak-free flue baffle specifically designed for heating furnace chimneys, in order to solve the problems mentioned in the above background technology. A leak-free flue baffle designed specifically for heating furnace chimneys, wherein the interior of this chimney baffle is equipped with several blades; a sealing ring connects the baffle ring to the blades, and a linkage rod is attached to the bottom of the blades. One side of this linkage rod is connected to a main shaft, and one end of the main shaft is connected to an actuator. By replacing the link of the linkage mechanism with a traditional butterfly valve mechanism and connecting it to the blades, and applying this to the device, it becomes possible to arrange the blades in segments and make adaptive adjustments according to actual conditions; the structure can be adjusted to either a two-blade or four-blade configuration, which reduces costs. The sealing ring equipped with high-temperature resistant ceramic fiber packing enhances the seal between the baffle and the blades, ensuring that the sealing ring maintains its sealing properties even at high temperatures, thereby improving its sealing efficiency.