Kitchen sewer automatic backflow prevention device technology

The invention discloses a kitchen sewer automatic backflow prevention device technology, and belongs to the field of water supply and sewerage engineering.Mainly, a newly-designed automatic backflow prevention valve is additionally arranged between a main sewer pipe and an elbow of a basin during installation of a kitchen sewer and used for preventing sewage backflow, and the kitchen sewer is mainly composed of the main sewer pipe, the automatic backflow prevention valve, the elbow, an indoor auxiliary sewer pipe, the basin and other structures.The kitchen sewer automatic backflow prevention device technology has the advantages of being easy to operate, low in cost, good in effect, capable of being widely used for preventing backflow of the kitchen sewer and the like.