| 摘要 |
A device ( 10 ) for cleaning the inside of a container includes a base ( 11 ) carrying a tube ( 12 ). A hose ( 50 ) is received within the base ( 11 ) and is connected at one end to the bottom of the tube ( 12 ) and at the other end to a source of water via a quick disconnect assembly ( 60 ). A spray head ( 21 ) houses a plunger ( 30 ) which has a base ( 31 ) and a nose ( 32 ). A spring ( 37 ) urges the nose ( 32 ) of the plunger ( 30 ) out through an aperture ( 40 ) in the spray head ( 21 ). A flat washer seal ( 42 ) is positioned with a majority of its surface on a shelf ( 41 ) formed in the spray head ( 21 ). Ribs ( 43 ) on the shelf ( 41 ) engage the seal ( 42 ) on one side, and a rim ( 44 ) on the base ( 31 ) engages the other side of the seal ( 42 ). The quick disconnect assembly ( 60 ) includes a valve ( 66 ) which is maintained closed by a spring ( 67 ) so that when the hose ( 50 ) is disconnected from the source of water, or the water supply pressure is lost, backflow is prevented. When a container is inverted and its bottom pushed down on the top of the nose ( 32 ) of the plunger ( 30 ), the base ( 31 ) of the plunger ( 30 ) is moved away from the seal ( 42 ) to allow water to be emitted from spray head ( 21 ) through axial apertures ( 70 ) and radial apertures ( 71 ).
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