A flush toilet, comprising a washing water supply portion which has a water outlet and a water inlet configured to connect to an external water supply pipe, is disclosed. Water flowing in from the water inlet flows from a first water inlet pipe to a second water inlet pipe, and then flows from the second water inlet pipe to the water outlet, a flow sectional area of the first water inlet pipe is smaller than a flow sectional area of the water inlet, and a flow sectional area of the second water inlet pipe is larger than the flow sectional area of the first water inlet pipe.

The invention provides a water supply system of a toilet tank, comprising a trigger switch, a water inlet pipe set and a drain pipe set. The inlet pipe set comprises a divergent water channel and a valve. The drain pipe set comprises a main drainpipe, an overflow manifold, a drain valve, and a drain valve actuator. The drain valve comprises a water stoppage valve cover and a rubber valve seat comprising a baffle which has a first state not affected by water entering the main drainpipe, and a second state affected by the water entering the main drainpipe. The main drainpipe communicates with the overflow manifold in the first state; and the junction between the main drainpipe and the overflow manifold is blocked by the baffle in the second state. The actuator drives the water stoppage valve cover when the channel is communicated.

The invention provides a water supply system of a toilet tank, comprising a trigger switch, a water inlet pipe set and a drain pipe set. The inlet pipe set comprises a divergent water channel and a valve. The drain pipe set comprises a main drainpipe, an overflow manifold, a drain valve, and a drain valve actuator. The drain valve comprises a water stoppage valve cover and a rubber valve seat comprising a baffle which has a first state not affected by water entering the main drainpipe, and a second state affected by the water entering the main drainpipe. The main drainpipe communicates with the overflow manifold in the first state; and the junction between the main drainpipe and the overflow manifold is blocked by the baffle in the second state. The actuator drives the water stoppage valve cover when the channel is communicated.

A quick water discharging device of a toilet tank, including a water discharging structure including a main pipe and an overflow manifold communicating with an inner space of the main pipe; and a water stoppage structure including a rubber valve seat located at an end of the main pipe, and a water stoppage valve pivotally connected to the overflow manifold and fitted with the rubber valve seat. The main pipe includes a pipe body, the inclined surface, and a communication hole communicating with the overflow manifold. The rubber valve seat includes a seat body, an opening communicating with the main pipe, and at least one baffle extending from the seat body to the main pipe. The baffle is close to an inner wall of the main pipe, faces the communication hole, and covers at least 50% of an area of the communication hole.

A quick water discharging device of a toilet tank, including a water discharging structure including a main pipe and an overflow manifold communicating with an inner space of the main pipe; and a water stoppage structure including a rubber valve seat located at an end of the main pipe, and a water stoppage valve pivotally connected to the overflow manifold and fitted with the rubber valve seat. The main pipe includes a pipe body, the inclined surface, and a communication hole communicating with the overflow manifold. The rubber valve seat includes a seat body, an opening communicating with the main pipe, and at least one baffle extending from the seat body to the main pipe. The baffle is close to an inner wall of the main pipe, faces the communication hole, and covers at least 50% of an area of the communication hole.

An outlet aperture arrangement (100) includes a flow promotion device (10) which, in use, is located at an outlet aperture (12) defined by a liquid container (14), for example, a toilet cistern. The device (10) includes a divider arrangement (16). The divider arrangement (16) includes one or more divider members (18). In use, the divider arrangement (16) is located at or in an entrance (20) to the outlet aperture (12), so that the or each divider member (18) divides the entrance (20) into a plurality of outlet entrance parts (22).

An outlet aperture arrangement (100) includes a flow promotion device (10) which, in use, is located at an outlet aperture (12) defined by a liquid container (14), for example, a toilet cistern. The device (10) includes a divider arrangement (16). The divider arrangement (16) includes one or more divider members (18). In use, the divider arrangement (16) is located at or in an entrance (20) to the outlet aperture (12), so that the or each divider member (18) divides the entrance (20) into a plurality of outlet entrance parts (22).

A toilet assembly includes a pedestal, a tank disposed on the pedestal, and an inlet chamber formed in the pedestal. The inlet chamber includes an inlet portion comprising an upstream end defining an upstream inner diameter, and a downstream end defining a downstream inner diameter less than the upstream inner diameter. The inlet chamber further includes an elbow extending downstream from the inlet portion, the elbow defining an elbow diameter substantially the same as the downstream inner diameter. The inlet portion is configured to receive water from the tank. The toilet assembly further includes a flush valve disposed in the tank, the valve defining a valve outlet disposed below the tank and in the inlet portion of the inlet chamber.

A quick water discharging device of a toilet tank, including a water discharging structure including a main pipe and an overflow manifold communicating with an inner space of the main pipe; and a water stoppage structure including a rubber valve seat located at an end of the main pipe, and a water stoppage valve pivotally connected to the overflow manifold and fitted with the rubber valve seat. The main pipe includes a pipe body, the inclined surface, and a communication hole communicating with the overflow manifold. The rubber valve seat includes a seat body, an opening communicating with the main pipe, and at least one baffle extending from the seat body to the main pipe. The baffle is close to an inner wall of the main pipe, faces the communication hole, and covers at least 50% of an area of the communication hole.

A quick water discharging device of a toilet tank, including a water discharging structure including a main pipe and an overflow manifold communicating with an inner space of the main pipe; and a water stoppage structure including a rubber valve seat located at an end of the main pipe, and a water stoppage valve pivotally connected to the overflow manifold and fitted with the rubber valve seat. The main pipe includes a pipe body, the inclined surface, and a communication hole communicating with the overflow manifold. The rubber valve seat includes a seat body, an opening communicating with the main pipe, and at least one baffle extending from the seat body to the main pipe. The baffle is close to an inner wall of the main pipe, faces the communication hole, and covers at least 50% of an area of the communication hole.