| 摘要 |
FIELD: mining industry. SUBSTANCE: well strainer consists of many successively connected filter elements. Each filter element has cylindrical connecting section, at least, on one of its ends and includes many supporting strips running in strainer axial direction and located in cylinder manner round the other section of strainer through preset interval in strainer peripheral direction, and wire wound on external periphery of supporting strips so as to form slots of preset width. Well strainer additionally includes means for levelling off the outer diameter located round the adjacent connecting sections of two filter elements connected to each other for levelling off the outer diameter of connecting sections with outer diameter of other sections. EFFECT: higher efficiency. |
