The power generation rate will be decreased if the solar panel accumulation of dust, but if the frame has mud zone will decrease generation exceed more than 90%. - The mud zone is the accumulation of several or even dozens of layers of floating dust - Solar Cells blocked by mud zone form a “Buckets effect” - The effect of floating dust on the power generation of the solar cell is uniform - In the traditional operation and maintenance robot cleaning work, 90% of the time is to clean the floating dust, but the frame with mud may require additional manual cleaning - In the traditional manual cleaning work, 90% of the time is to clean the mud zone, even need additional equipment - The drainage desilter solves the dust accumulation on the frame, so that many solar power stations have less cleaning and even no cleaning 1、Pain points of low-inclination photovoltaic power plants The solar panels of low-inclination photovoltaic power plants most time are flat display on the roof, the installation inclinati