Hydraulically controlled flushing device

Flushing device (dce) designed to be installed in a tank (e) conventionally disposed above a toilet bowl and provided with an inlet for the water network characterised in that it comprises a hydraulic mini-generator (a) installed on said water inlet upstream of all of the other elements of the flushing device (dce), a double solenoid valve (b) supplied with water via the hydraulic mini-generator (a) and connected to two pipes (b.1) and (b.2), a control module (c) provided with a battery charged by said hydraulic mini-generator (a) and ensuring the control of said double solenoid valve (b), and a hydraulically controlled filling/emptying mechanism (d) akin to a double-acting double-rod cylinder and including:

• a mechanism body (d.3) with at the top a bottom (d.31) ending a rear chamber (car) and at the bottom a nose (d.32) ending a front chamber (cav), said bottom (d.31) and nose (d.32) of the rear (car) and front (cav) chambers respectively provided with a passage opening (do.31, do.32),
• a piston (d.4) moving in the body (d.3) and being subjected either to the action of pressure applied in the rear chamber (car) via the pipe (b2), or to that applied in the front chamber (cav) via the pipe (bl),
• a movable valve (d.2) the positioning of which obstructs or makes possible the passage of the water through a support base (d.1) ensuring the low sealing of the tank (e) and directing the water towards the bowl during a flush, and a rod (d.6) integral with the piston (d.4) and with the valve (d.2) and passing into the respective passage openings (do.31, do.32) of the bottom (d.31) and nose (d.32) of the rear (car) and front (cav) chambers.