Water seal device for removing odour of toilet

A water seal device for removing odour of a toilet, the water seal device being mounted in a toilet tank and consisting of an exhaust assembly, a water seal backflow assembly and an electronic control assembly;

• the exhaust assembly consisting of an n-shaped exhaust hood, an exhaust electric motor, an exhaust tube and a telescopic tube;
• the exhaust assembly being fastened on the exhaust electric motor and the water seal backflow assembly through the n-shaped exhaust hood, the exhaust electric motor being located inside a top portion of the n-shaped exhaust hood above the water seal backflow assembly;
• the water seal backflow assembly consisting of a U-shaped water storage cup, an n-shaped water seal hood and the exhaust tube;
• the water seal backflow assembly having the exhaust tube as a main body, the exhaust tube being inserted through the U-shaped water storage cup to become an integrated one, an exhaust tube mouth being higher than a water level line, the n-shaped water seal hood being fastened in a chamber defined between the exhaust tube and the U-shaped water storage cup to form a first water seal chamber and a second water seal chamber;
• the electronic control assembly using a wire to connect a power supply, a power switch, an electronic program controller and a water level switch in series in an electronic circuit.