NOVELTY - Ammonia removing and nitrogen preserving acid mist spray device of wet manure composting workshop comprises: a chassis (1), a pump (2), a diluted sulfuric acid liquid kettle (3), an electromagnetic valve set (4), an engine control module (5), an environment temperature sensor of the composting workshop, a temperature sensor of middle composted manure layer, a spray head set, an ammonia concentration sensor, an electric motor, a trundle, a rotating shaft and agitating vanes. The pump is connected with the diluted sulfuric acid liquid kettle, the electromagnetic valve set and the spray head set.    USE - Used as ammonia removing and nitrogen preserving acid mist spray device of wet manure composting workshop.    ADVANTAGE - The device: automatically overturns and mixes the composted manure according to the local environment and composting parameters and sprays acid mist to neutralize ammonia produced by fermentation during the composting process; returns nitrogen element to the composted fertilizer; reduces environmental contamination caused by ammonia; does not contaminate the air by emitting ammonia during fertilizer overturning process; does not allow loss of nitrogen; is simple; and exhibits good ammonia removal and nitrogen preservation effect with low cost.    DETAILED DESCRIPTION - Ammonia removing and nitrogen preserving acid mist spray device of wet manure composting workshop comprises: a chassis (1), a pump (2), a diluted sulfuric acid liquid kettle (3), an electromagnetic valve set (4), an engine control module (5), an environment temperature sensor of the composting workshop, a temperature sensor of middle composted manure layer, a spray head set, an ammonia concentration sensor, an electric motor, a trundle, a rotating shaft and agitating vanes, where the chassis is equipped with the pump, the diluted sulfuric acid liquid kettle, the electromagnetic valve set, the engine control module, the spray head set, the ammonia concentration sensor, the electric motor, the trundle and the rotating shaft. The electric motor is connected with the rotating shaft. The multiple agitating vanes are spliced onto the rotating shaft. The pump is connected with the diluted sulfuric acid liquid kettle, the electromagnetic valve set and the spray head set in turns by polyethylene tubes. The electromagnetic valve set, the ammonia concentration sensor, the environment temperature sensor in the composting workshop and the temperature sensor of the middle composted manure layer are connected with the engine control module.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic representation of the acid mist spray device.    Chassis (1)    Pump (2)    Diluted sulfuric acid liquid kettle (3)    Electromagnetic valve set (4)    Engine control module (5)