| abstract |
(57) [Summary] [PROBLEMS] To reduce the number of parts to reduce the assembly cost, and to facilitate the separation and discharge by forming all members from a synthetic resin material. A lower end surface of a peripheral wall of a water / air mixing box is closed with a first valve plate, and an upper end surface of the peripheral wall is closed with a foaming mesh, and a ventilation path is provided in the first valve plate. An elastic second valve plate 56 protrudes from the outer surface of the first valve plate and is elastically pressed against the lower surfaces of the inward flange-like top plates 12 and 14 so as to be in contact with the first valve plate 5. 3 and the foaming mesh 55 and the elastic second valve plate 56 are formed integrally with the water-mixing box 50 to reduce the number of parts, and all parts are formed of a synthetic resin material. Then, the liquid opens the first valve plate 53 and flows into the water-mixing box 50, and the air in the body also flows into the water-mixing box 50 through the intake hole 37 and the ventilation path 54 and flows out from the foaming mesh 55. Meanwhile, external air flows into the container body 1 by opening the elastic second valve plate 56 due to the negative pressure inside the body. |