Leak-proof water valve of toilet tank

A leak-proof water valve of a toilet tank, the leak-proof water valve including:

• a water inner tube, an outer tube group and a buoyant housing, wherein:
• the water inner tube has an engaging bolt and multiple outlets set on a lower side of the water inner tube;
• the engaging bolt is set on a bottom side of the toilet tank;
• and a locking nut is used to fasten the engaging bolt;
• the outer tube group consists of an outer tube, a cover, a connecting rod, an adjustment rod, a sealing plug, a cross rod and an elastic element;
• the outer tube is set on an outer peripheral edge of the water inner tube;
• a water control base and an outlet pipe are set on an upper end of the outer tube;
• a first arm, a second arm, a shaft tube and an outlet hole are set on the water control base;
• the outlet hole is communicated with an outlet through pipe set inside the outer tube;
• a first positioning hole and a first shaft hole are set on the first arm;
• a second shaft hole is set on the second arm;
• the first shaft hole is corresponded to the second shaft hole;
• a sealing ring and a pad are set between the water control base and the outlet through pipe;
• the cover covers a top of the water control base;
• a second positioning hole, two corresponding supporting shafts, two hook arms and a first piece are set on an inner side of the connecting rod;
• a notch is set between the two hook arms;
• the two corresponding supporting shafts are set into the first and second shaft holes respectively;
• a holder is set on an outer side of the connecting rod;
• a sleeve segment set on an upper end of the adjustment rod is provided for the holder to hold;
• an adjustment segment is set on a lower section of the adjustment rod;
• a transverse rod is set on an upper end of the sealing plug;
• the transverse rod is clamped by the two hook arms;
• at a lower section of the sealing plug is a cotter;
• the cotter is inserted between the outlet hole and a through hole of the pad;
• the sealing plug is provided to move up and down to control operations of the outlet through pipe;
• an end of the cross rod is connected to an end of a second chain;
• another end of the second chain is set on a pull rod;
• a hinge is set on another end of the cross rod;
• a second piece is set on a side of the hinge;
• the second piece is provided to push the first piece;
• the hinge is set on the shaft tube;
• a first pin of the elastic element is fixed to the first positioning hole;
• a second pin of the elastic element is fixed to the second positioning hole;
• and
• the buoyant housing;
• has a punched hole is set thereon for insertion of the outer tube, so that the buoyant housing could be moved up and down on the peripheral edge of the outer tube;
• a preloading room and a loading room are set on a top of the buoyant housing;
• the position of the preloading room is higher than the loading room;
• a water hole is set between the preloading room and the loading room;
• a buoyant room is set on a bottom side of the buoyant housing;
• two corresponding third arms and a first drain hole are set outside of a peripheral edge of the buoyant housing corresponding to the loading room;
• a shaft hole is set on the third arm;
• the shaft hole is provided for a supporting shaft of a positioning collar to set thereon;
• the positioning collar is provided for the adjustment segment of the adjustment rod to be set therein.