Liquid replenishing apparatus

DETAILED DESCRIPTION Accordingly, an essential object of the present invention is to provide an improved liquid replenishing apparatus in which a time period required for raising an internal pressure of a replenishment tank to a predetermined value enabling supply of liquid raw material replenishment to a raw material tank undergoes a minimum change regardless of an amount of the liquid raw material replenishment remaining in the replenishment tank, with substantial elimination of the disadvantages inherent in conventional liquid replenishing apparatuses of this kind.
Another important object of the present invention is to provide an improved liquid replenishing apparatus of the above described type for supplying the liquid raw material replenishment to a plurality of the raw material tanks simultaneously, which does not require complicated control devices and can be operated with much ease.
In accomplishing these objects according to one preferred embodiment of the present invention, there is provided an improved liquid replenishing apparatus for supplying liquid raw material replenishment for liquid raw material of an article to at least one raw material tank such that said raw material tank stores therein said liquid raw material, said liquid replenishing apparatus comprising: a replenishment tank for storing therein said liquid raw material replenishment, in which a space is defined above a liquid level of said liquid raw material replenishment; a first pipe which is extended between said replenishment tank and said raw material tank; a second pipe for introducing pressurized gas into said space so as to deliver said liquid raw material replenishment from said replenishment tank to said raw material tank through said first pipe; a branch pipe which gives communication between said first pipe and said second pipe; a pressure regulator which is provided in the course of said second pipe; and a first flow regulator which is provided in the course of said branch pipe.