Install the filter tank for pumping tube top and high efficiency of the internal space is configured feelings groundwater protection Sealed upper ball device .

摘要

A seal type top protection apparatus for a deep well for underground water is provided to prevent the pollution of underground water in a deep well and to promote convenience of maintenance by installing a filter tank on the upper part of a water pumping pipe and increasing utility of the inside space. The seal type top protection apparatus for a deep well for underground water contains: a seal type top protection(7) provided with a lower flange(56) to be connected to a casing installed to a deep well for underground water; a filter tank(9) inserted to a casing connection pipe(54) of the seal type top protection and provided with a fixing ring to set up the insertion depth of the filter tank to the inside of the casing connecting pipe, and coupled with a water pumping pipe(16) to filter out underground water flowing inward from the deep well through a filter net(10) and to collect slime and sane(18) on the bottom of an inner tub(77); and a water supply pipe(24) connected to the filter tank and provided with a check valve(19).