| 摘要 |
An opening and shutting device for cylinder pressure is provided to reduce the unnecessary waste of cleaning water and to use the cleaning water easily. An opening and shutting device for cylinder pressure comprises a hose(310) which it connects to valve in order to supply the water to going up and coming down working part, a going up and down working part(320) which are equipped so that the actuating rod descend to the original position, a siphon cover connection part(330) which is equipped in order to open and close the vent of the water tub, a pressure release part in which the actuating rod descending to the cylinder(321) lower part with the force of restitution of the elastic member pressurizes the pressure release outlet and closing the drainage rib, a clamp(350) in which the fix groove(351) which fixes hose while it has with elasticity, mounting in order to contact on the outer circumference of the overflow pipe(12) is formed.
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