The utility model discloses an
ammonia injection grid's
nozzle device of preventing the clogging of deposit ash, relates to denitration equipment field, including rhombic shell, the upper end of rhombic shell is equipped with a plurality of evenly distributed fixed hole, every fixed hole inside is fixedly connected with
branch pipe, every
branch pipe left side is equipped with the air inlet, the air inlet is equipped with the air outlet, the air outlet is equipped with the air outlet, and the air outlet is equipped with the air outlet. A baffle is fixedly connected to the right side of the inner wall of the
branch pipe, a fixing plate is fixedly connected to the inner wall of the branch pipe, and a T-shaped rod face is slidably connected to the interior of the fixing plate. According to the utility model, the opening and closing of the branch pipe are controlled through the plug and the spring damping above the branch pipe, so that the branch pipe and the material conveying pipe are cleaned more quickly, gas is fed into the branch pipe through the gas pipe and the gas inlet hole to blow back, and impurities and blockages are fed back into the material conveying pipe; the problems that
nitrogen oxides exceed the standard,
ammonia escapes and the usage amount of
ammonia water is increased due to blockage of the ammonia spraying grid are avoided.