Patent ID: 11873630
Assignee: KOHLER (CHINA) INVESTMENT CO., LTD.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC E  F | IPC E  F

Claim 14:
15. A method for controlling a pneumatic valve to release water in a water tank of a toilet by using a pneumatic valve control device, the method comprising:
pushing up, by water supplied into a hydraulic cylinder, a second piston of the hydraulic cylinder to generate an upward movement of a piston rod connected to the second piston;
in response to the upward movement of the piston rod, opening an air communication between an air cylinder and an air vent to supply air into the air cylinder and pushing up a first piston disposed in the air cylinder;
stopping a liquid inlet to supply the water into the hydraulic cylinder to allow the second piston to return to an initial position;
releasing, by a locking and releasing mechanism, the first piston to generate a downward movement of the first piston so as to compress the air out of the air cylinder; and
opening, by the compressed air, the pneumatic valve so as to discharge the water from the water tank.