| 摘要 |
#CMT# #/CMT# The device has a base (4) fixed to the bottom of a well by a sealing device (5). An anti-return valve (9) opens under pressure of a water table and closes under pressure of water stored in the well with float operated valves (6) fixed on a trapping orifice (1A) which is locked progressively when the level of stored water is raised. The base has a conical rising and a maintenance pin for being installed in a gravel bed (7). #CMT#USE : #/CMT# Used during rain, for transforming a well in to a reservoir (claimed) for storing rain water from roof and drain, and water table. #CMT#ADVANTAGE : #/CMT# The anti-return valve opens under pressure of the water table and closes under pressure of water stored in the well with float operated valves fixed on trapping orifice so as to facilitate transportation of water from roof and drains in to the well during rainy days, and the pressure of the stored water locks the valve while crushing the base and crushes the joint against wall of the well to ensure sealing, thus permitting to maintain the functional characteristics of the well. The device permits mounting and dismounting of the base in an easy manner. The conical rising protects the anti-return valve from gravel. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows an entire view of a well system. 1A : Trapping orifice 4 : Base 5 : Sealing device 6 : Float operated valves 7 : Gravel bed 9 : Anti-return valve. |
