| 摘要 |
FIELD: mechanical engineering; filters and strainers. ^ SUBSTANCE: invention relates to production of strainers for water intake, dewatering and hydrogeological wells. Proposed well strainer is formed by fiber-porous tube with wall made by thermally fastened fibers of polyethylene in places of intersection whose diameter decreases and stowing density increases in thickness of tube wall from outside to inside. One end of tube is hermetically closed by polyethylene plug fastened to tube by welding of fibers in process of manufacture of filter to side surface of plug, shrinkage of fiber-porous material and filling of ring cavity of plug with fibers. Density of fiber-porous material on ends of fiber-porous tube exceeds average density of remaining part of tube by, minimum, 100%. ^ EFFECT: provision of easy-to-t/make and highly efficient well strainer. ^ 1 dwg |
