A water surface dirt collecting and filtering device comprises a three-way pipe body, a water surface guiding seat, and a filtering unit. The three-way pipe body has a water inlet end and a water outlet end axially communicating to each other and a flow guiding end in vertical direction. The water inlet end is disposed with a connection sleeve having a contraction section, increasing the water outflow speed through the contraction section when water flow is discharged via the three-way pipe body, further generating a suction force. This invention does not only utilize a gas pipe to introduce oxygen to increase the oxygen content of the pond but also generates suction effect with respect to the water surface through the flow guiding pipe so that water flow of water surface is sucked from the water surface guiding seat, and dirt collection and filtration for water surface drifter is performed through the filtering unit to prevent water quality from being polluted and deteriorated by the drifter, retaining the cleanness of water quality and increasing survival rate and output value of aquatic creatures.一種水面集污過濾裝置,其包含:一三通管體、一水面導引座以及一過濾單元,該三通管體具有軸向相通之入水端以及出水端,以及垂直向連通之導流端,該入水端設有一連接套筒,且該連接套筒具有一縮口段,令水流經由三通管體排出時,俾能透過縮口段提升出水流速,進而產生一吸引力,不僅能利用輸氣管將氧氣帶入提升水池之含氧量,另一方面還能透過導流管於水面產生吸引效果,令水面的水流得以由水面導引座吸入,進而再透過過濾單元進行水面漂流物的集污、過濾,防止水質受到漂流物污染變質,保持水質的清潔度,增添水中生物之存活率及產值。10‧‧‧三通管體11‧‧‧入水端12‧‧‧出水端13‧‧‧導流端14‧‧‧連接套筒141‧‧‧縮口段15‧‧‧輸氣管20‧‧‧水面導引座21‧‧‧貫穿孔22‧‧‧導流管23‧‧‧容設空間30‧‧‧過濾單元31‧‧‧基座311‧‧‧抵靠凸垣312‧‧‧浮力件313‧‧‧斜導面32‧‧‧過濾杯體321‧‧‧抵靠肋322‧‧‧過濾孔421‧‧‧導出管
