| 摘要 |
FIELD: mining industry, particularly filters for injection wells for underground leaching, bed flooding and burial of waste in deep horizons. ^ SUBSTANCE: well filter comprises perforated case, support rods and profiled wire coils or ganged plastic or propylene rings defining horizontal slots widening in filter outward direction. The coils or rings have rectangular cross-sectional edges. Upper ones are inclined from outer side at an angle to horizon corresponding to natural slope of bed rock or gravel filling in filtering agent medium. ^ EFFECT: possibility of system operation optimization. ^ 1 dwg |
