| 摘要 |
FIELD: drainage apparatus is used in industrial systems of preparation of drinking water, technical water and sewage purification. SUBSTANCE: drainage apparatus has special working cavity, formed by outer surface of drained pipe 1 with holes 2 and inner surface of slit band 4 and also by butt plugs 6. In the case slits are made in the form of stampings out with notch of half length of stamping out, that forms slit clearance equal to 0.01 - 4 mm. In the case slit band 4 is mounted on pipe 1 as cylindrical surface, cross-section of which has form of arc of circumference with diameter smaller, than diameter of pipe, and center of which is shifted in respect to center of pipe. Orientation of inlet holes - slits is in symmetry to plane, that is collinear to gravity forces vector and is passing through pipe axis of symmetry. EFFECT: simplified filter design, decreased operational costs, increased its durability. 2 dwg |
