Quick water discharging device of toilet tank

A quick water discharging device of a toilet tank, comprising:

• a water discharging structure, comprising a main pipe and an overflow manifold communicating with an inner space of the main pipe, the main pipe comprising a pipe body, an inclined surface located at one end of the pipe body, and a communication hole located on the pipe body and communicating with the overflow manifold;
• and
• a water stoppage structure, comprising a rubber valve seat located at an end of the main pipe provided with the inclined surface, and a water stoppage valve pivotally connected to the overflow manifold and fitted with the rubber valve seat, the water stoppage valve operated to be opened relative to the rubber valve seat, the inner space of the main pipe communicating with an external environment when the water stoppage valve is opened, the rubber valve seat comprising a seat body matched with the inclined surface, an opening formed on the seat body and communicating with the inner space of the main pipe, and at least one baffle extending from the seat body to the inner space of the main pipe, the at least one baffle being close to an inner wall of the main pipe and facing the communication hole, and the at least one baffle covering at least 50% of an area of the communication hole, wherein the at least one baffle is configured to, when the water stoppage valve unblocks the opening to allow water in the toilet tank to enter the main pipe, block an air resistance from the communication hole under an action of water pressure, and the at least one baffle is configured to, when the water stoppage valve closes the opening, not completely close the communication hole, such that the overflow manifold is in communication with the main pipe.