초록 ▼

Mixing concentrates requires the precise dispensing of predetermined amounts of concentrate into predetermined amounts of liquid and such mixes can be obtained by the use of a system having two positive displacement pumps, one for pumping larger volumes with each operation than the second pump and a

Mixing concentrates requires the precise dispensing of predetermined amounts of concentrate into predetermined amounts of liquid and such mixes can be obtained by the use of a system having two positive displacement pumps, one for pumping larger volumes with each operation than the second pump and a pressure regulator to maintain a predetermined pressure on the solvent carrier fluid for the mixture.

대표청구항 ▼

A fluid dispensing system for dispensing a solution comprising a predetermined amount of a concentrate together with a carrier fluid, said system comprising a closed manifold chamber for storing a quantity of carrier fluid, a plurality of ports leading to said manifold chamber, each of said ports be

A fluid dispensing system for dispensing a solution comprising a predetermined amount of a concentrate together with a carrier fluid, said system comprising a closed manifold chamber for storing a quantity of carrier fluid, a plurality of ports leading to said manifold chamber, each of said ports being connected by a valve to said manifold chamber and being connected to a supply of concentrate, a first positive displacement pump connected to said chamber and operable upon each cycle of said pump to displace from said manifold chamber a predetermined volume of said carrier fluid and to replace it with an equal volume of concentrate; a second positive displacement pump connected to said manifold chamber for pumping a second predetermined volume of fluid from said manifold chamber during each cycle, which second predetermined volume is different from that of said first pump during each cycle of operation; a pressure regulator, said pressure regulator being adapted for connection to a source of carrier fluid and means for connecting said pressure regulator to said manifold chamber, said means including a valve for controlling the flow of fluid from said pressure regulator to said manifold chamber; whereby, operation of said first pump and said second pump will draw predetermined amounts of concentrate through said ports into said manifold chamber and a predetermined amount of carrier fluid may be dispensed through said manifold chamber.