| 摘要 |
PURPOSE:To obtain an air lift type slime remover free of uneven sucking performance by a method in which an umbrella-shaped casing with opened lower face is attached to the lower end of a sucking pipe, and a plurality of vertical partition plates are provided on the upper inside of the casing. CONSTITUTION:An umbrella-shaped casing 3 with opened lower face is attached to the lower end of a sucking pipe, and partition plates 4 are vertically provided on the inside of the casing 3. The device is then penetrated into a trench excavated, air is sent through an air sending pipe 1 into the casing 3, and slime on the bottom of the trench is sucked up by an air lift system and discharged onto the ground's surface. Since the slime is sucked up facially by the casing 3 of this device, the slime can be evenly and completely removed. |
