Automatic homogenizing device and method for livestock and poultry excrement biogas engineering

The invention relates to an automatic homogenizing device for livestock and poultry excrement biogas engineering, which comprises a slope channel and a homogenizing pool, wherein the tail end of the slope channel is communicated with the homogenizing pool; a dilution water pump is arranged at the head of the slope channel; a grid is arranged close to the tail end of the slope channel; a top stirrer is mounted at the top of the homogenizing tank; a concentration meter and a circulating water pump are mounted in the homogenizing tank; the three ports of the three-way valve are respectively connected with a circulating water pump, a discharging side and a circulating side; the concentration meter, the dilution water pump, the circulating water pump and the three-way valve are connected to a central controller through signals. According to the invention, the slope channel and the homogenate pool are combined, so that the combination of a livestock and poultry excrement raw material feedingsystem and a homogenate