Tunnel kiln steam exhaust device

The utility model relates to a tunnel kiln steam exhaust device, which comprises an exhaust pipe, a main fan and a main air pipe, the fixed end of the exhaust pipe is connected with a preheating area of a tunnel kiln, the main air pipe is connected between the main fan and the free end of the exhaust pipe, the tunnel kiln steam exhaust device is characterized in that the exhaust pipe is provided with an air supply port, and the air supply port is provided with an air quantity adjusting mechanism. According to the tunnel kiln steam exhaust device, the air exhaust speed can be adjusted according to the actual condition of steam in a tunnel kiln, and the temperature and humidity in the kiln are ensured. 本实用新型涉及一种隧道窑蒸汽排出装置，包括排气管、主风机和主风管，排气管的固定端与所述隧道窑的预热区连接，主风管连接在主风机与排气管的自由端之间，其特征在于：所述排气管上设有补气口，补气口上设有气量调节机构。这种隧道窑蒸汽排出装置能够根据隧道窑中蒸汽的实际情况调节抽气速度，确保窑内的温度和湿度。