The utility model provides a filtering device.It mainly aims at air purification and sterilization.Using porous screens,And the filter net forms an antibacterial material layer with silver anion.At the same time, the anion generator extended in the filter screen can release the anion.And a metal frame surrounding the outer ring of the filter screen.And the metal frame is subjected to the action of the electrode sheet to generate a high-voltage electric field.Then piezoelectric effect is produced for the antibacterial material layer.The antibacterial material layer can release more negative oxygen ions.Silver ions,And such negative oxygen ions,The silver ion collides in the porous filter screen and becomes fine.Therefore, it can give full play to the odor absorption of the air passing through the filter screen.Clean air and sterilization.Contribute to the improvement of ambient air quality.本新型係提供一種過濾裝置，其主要針對空氣進行淨化與殺菌，利用多孔隙的濾網，且該濾網上形成有載銀負離子之抗菌材料層設計，同時再配合伸置於該濾網內之負離子產生器可適將負離子釋出，以及該濾網外圈圍之金屬框體，且該金屬框體受到電極片作用而產生高壓電場，進而針對該抗菌材料層產生壓電效應，使該抗菌材料層釋放更多負氧離子、銀離子，且該等負氧離子、銀離子於該多孔隙之濾網內產生碰撞而呈細化態樣，故可針對流經該濾網之空氣發揮最大的臭味吸收、潔淨空氣與殺菌等效果，有助於環境空氣品質的提升。
