A NOVEL TUBE DEVICE FOR IRRIGATION AND DRAINAGE

摘要

A novel tube device for irrigation and drainage includes an outer tube (1), some outer wall irrigation and drainage openings (2) mounted in the wall of the outer tube, a main water channel (4) mounted along in the outer tube and some inner wall irrigation and drainage openings (3) mounted the position in the wall of the main water channel higher than the outer wall irrigation and drainage openings. Comparing with the prior art, a great deal of sand particle is not carried in the pipeline with the irrigation and drainage openings during operation process, thereby avoiding blocking.