Prevent blockking up formula roof rainwater mouth

The utility model relates to a prevent blockking up formula roof rainwater mouth is formed by top cap, cylindricality wire net, rainwater collection mouth, annular wire net, downspout, the combination of rivers mouth. The rainwater is collected the mouth and is had and prevents blockking up the function, and the cylindricality wire net and the annular wire net that set up in the rainwater is collected mouthful can be collected roofing rubbish, promote the rainwater to flow, prevent the function of mouth of pipe jam, collect a mouthful top at the rainwater and set up the top cap, have certain guard action to the rainwater mouth of pipe, make the rainwater not stopped up by debris and can normally get into the downspout to play the fixed action to the cylindricality wire net, the slope design of rainwater collection mouth can accelerate the mobile speed of rainwater, makes roof rainwater get rid of as early as possible. The utility model discloses a simple structure, reasonable in design, safe and reliable, con