| 摘要 |
A device for dispensing liquids such as paint, lacquer, glue and the like containing solvents which evaporate in air at room temperature, includes an outer rigid shell forming an enclosure for an inner flexible bag or container. The bag has an outlet orifice coincident with an outlet opening provided in the bottom wall of the outer shell, and an air inlet communicates with the interior of only the enclosure for establishing an atmospheric pressure therewithin so as to permit the dispensing liquid to flow outwardly of the outlet opening. The outlet may be closed by a shut-off valve so as to create a sub-atmospheric pressure level within the enclosure to thereby interrupt the liquid flow from the device. Otherwise, the air inlet may be closed when its outer end becomes submerged in a quantity of water contained within a receptacle and divided by a flexible diaphragm from the dispensed liquid. The water level changes in response to changes in the supply of dispensing liquid in the receptacle as an applicator roll coats products with the dispensed liquid.
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