Patent ID: 11898337
Assignee: XIAMEN R&T PLUMBING TECHNOLOGY CO., LTD.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 11:
12. The effort-saving flap-type drain valve according to claim 2, wherein the flapper is capable of rotating between a first position and a second position relative to the connecting rod, and an elastic resetting element is provided between the flapper and the connecting rod, and the elastic resetting element is capable of resetting the flapper from the second position to the first position; in a state where the flapper is in the first position, the flapper is capable of hermetically covering and connecting to the drain port after falling down; and in a state where the flapper hermetically covers and connects to the drain port, as the actuator is driven, the actuator is capable of causing the flapper to rotate from the first position to the second position relative to the connecting rod, and capable of simultaneously causing the flapper to rotate about the first rotation pivot to initially open the drain port.