Patent ID: 9596812
Date: 2017-03-21
CPC Classifications: A01G,B01D,E02B,E03F

Claim:
1. A multi-filtration auto-drainage/irrigation pipe having both a drainage function and an irrigation function, comprising: a pipe body component, wherein: said pipe body component comprises a pipe body and two vertical plates; said pipe body has an opening thereon; and, said two vertical plates are respectively extended from two ends of said opening towards an interior of said pipe body; a trapezoidal groove component, wherein: said trapezoidal groove component has a bottom surface and two lateral slopes; and, said trapezoidal groove component is connected with said two vertical plates and an inner wall of said pipe body; and a bottom plate, wherein: said bottom plate is connected with said two ends of said opening of said pipe body; and said bottom plate is opposite to said bottom surface of said trapezoidal groove component; wherein: said two vertical plates, said two lateral slopes of said trapezoidal groove component and said inner wall of said pipe body form two first drainage and irrigation channels, respectively; said trapezoidal groove component and said inner wall of said pipe body form a second drainage and irrigation channel; said two vertical plates, said bottom surface of said trapezoidal groove component and said bottom plate form a third drainage and irrigation channel; first filtering holes are uniformly distributed on said bottom plate; and, said bottom plate forms a first drainage and irrigation port as a first filtering layer on a pipe wall of said pipe body; second filtering holes are uniformly distributed on said bottom surface of said trapezoidal groove component; said bottom surface of said trapezoidal groove component forms a second drainage and irrigation port as a second filtering layer; and said second drainage and irrigation port is arranged between said third drainage and irrigation channel and said second drainage and irrigation channel; third filtering holes are uniformly distributed on said lateral slopes of said trapezoidal groove component; said two lateral slopes of said trapezoidal groove component form third drainage and irrigation ports as third filtering layers; and said third drainage and irrigation ports are respectively arranged between said second drainage and irrigation channel and said first drainage and irrigation channels; when draining, water flows successively through said first filtering layer, said second filtering layer, said third filtering layers and said first drainage and irrigation channels, and then is discharged; and when irrigating, the water flows successively through said first drainage and irrigation channels, said third filtering layers, said second filtering layer and said first filtering layer, and then is discharged.