SAND-INFLOW PREVENTIVE SCREEN DEVICE FOR DEEP WELL

PROBLEM TO BE SOLVED: To provide a sand-inflow preventive screen device for a deep well, by which the deep well can be used for a prolonged term by quick corresponding when clogging is generated. SOLUTION: In a casing pipe 1, in which a large number of holes communicated with internal and external s...

Full description

Saved in:
Bibliographic Details
Main Author MURAHASHI YOSHIO
Format Patent
LanguageEnglish
Published 29.02.2000
Edition7
Subjects
FIXED CONSTRUCTIONS
INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, ORDISTRIBUTING WATER
SEWERAGE
WATER SUPPLY
Online AccessGet full text

Cover

More Information
Summary:PROBLEM TO BE SOLVED: To provide a sand-inflow preventive screen device for a deep well, by which the deep well can be used for a prolonged term by quick corresponding when clogging is generated. SOLUTION: In a casing pipe 1, in which a large number of holes communicated with internal and external surfaces are disposed in rows in the vertical direction on a peripheral surface, the casing pipe 1 is composed of an external cylinder 1a and an internal cylinder 1b. Screens 4 preventing the intrusion of sand, etc., mixed with water flowed in from the outside is inserted into arcuate voids 3 in a plan view formed by column materials 2 holding a section between both cylinders 1a, 1b at regular intervals in an exchangeable manner in the vertical direction.
Bibliography:Application Number: JP19980229651