Water supply system for sanitary ceramics

A water supply system for sanitary ceramics, the water supply system comprising:

• a housing (100) which is hollow and in which a water supply hole (101) is formed at a central portion of a lower end, a pair of water discharge holes (102) are formed at lower ends of both sides based on the water supply hole (101), and a flow path (103) configured to guide water introduced through the water supply hole (101) to be discharged through the water discharge hole (102) is formed between the water supply hole (101) and the water discharge hole (102);
• and
• an opening/closing device (200) installed on an upper side of the water discharge hole (102) of the housing (100) to open or block an upper end of the water discharge hole (102),
• wherein the opening/closing device (200) includes a diaphragm (210) which is installed on an upper portion of the water discharge hole (102), has a guide hole (211) formed in an outer edge thereof, and is configured to move upward or downward to open or close the water discharge hole (102), a dividing cap (220) which is installed on an upper portion of the diaphragm (210) to divide an inside of the housing (100) into upper and lower spaces (100a, 100b) and has a support protrusion (221) formed on an upper surface thereof and a through-hole (222) formed downward from an upper surface of the support protrusion (221) to communicate with the upper and lower spaces (100a, 100b), an opening/closing member (230) which is installed to be movable upward or downward in the upper space (100a) of the housing (100) to come in close contact with the upper surface of the support protrusion (221) of the dividing cap (220) or move away from the upper surface of the support protrusion (221) to open or block the through-hole (222), a lifting/lowering driving device (240) which is installed to be fixed to an upper surface of the housing (100) that faces the water discharge hole (102) and has a lower end connected to the opening/closing member (230) to move the opening/closing member (230) upward or downward, and a horizontal movement device (250′) which is installed to be horizontally movable on an inner wall surface of the water discharge hole (102) of the housing (100) and configured to allow the diaphragm (210), which is moving downward, to come in close contact with an outer surface thereof and, by being moved backward, guide the diaphragm (210) to gradually move downward to guide the diaphragm (210) to gradually block the water discharge hole (102).