| 摘要 |
PURPOSE:To prevent leak of fluid, by a method wherein a disc can be reciprocated within a cylinder by a trace distance, and a hollow columnar space, formed between a cylinder and a rotor, forms a pressure chamber. CONSTITUTION:Discs 41 and 42 and a rotor 40 are situated in a cylinder 90 to form a rotary valve 100. The disc 41 and 42 are in a manner to be firmly adhered to the inner surface of the cylinder 90 and the disc 42 is situated so that it can reciprocate within the cylinder by a trace distance. A space, formed by the disc 42, the cylinder 90, and a partition wall 101, and a hollow columnar space, formed by the rotor 40 and the cylinder 90, are formed as pressure chambers 102 and 103, respectively. This constitution enables completely perfect prevention of leak of fluid past a contact surface between the disc and the rotor.
|
