| 摘要 |
<p>The controller is suitable for a liquid containing numerous solid particles and has a casing (13, 30, 40, 62, 70, 92) in which a valve body (16, 32, 42, 50, 60, 73, 90) is slidably accommodated. Between the inner surface of the casing and the outer surface of the valve body is provided a wide space (S2) by forming some sliding projections (18, 33, 41, 51, 63a, 63b, 80a, 80b, 80c, 93a, 93b, 93c). Furthermore, at least one flexible closing member (14, 35, 78, 79) is provided between the casing and the valve body. This construction enables the valve body to move smoothly without jamming of the solid particles in the liquid in the space (S2).</p> |
