PROPORTIONING PUMP Russian patent published in 2005 - IPC

FIELD: power engineering' chemical, food, medicine and other industries.

SUBSTANCE: invention can be used for automatic proportioning of materials in different technological processes, for instance, for metering out additions at regeneration of used lubricating oils. Output of delivery pump is connected by main line with inputs of distributors. Rods of spool plungers are installed for limited displacement in selectors. The latter are rigidly connected with rods of pistons of their hydraulic motors. Pumps are connected with input of delivery pump through delivery valves by main line. Suction valves of pumps are connected by main line with metering reservoir. Second outputs of distributors are connected by main line with reservoir for liquid to be processed. Value L of limited displacement of one selector relative to rods of distributor spools is determined by formula:

where is cyclic delivery of addition by one pump; is minimum cyclic delivery of addition by one pump; F is pump plunger area. Summary value X of limited displacement of two selectors is where and is displacement of first and second selector, respectively.

EFFECT: provision of automatic regulation of optimum amount of metered out addition.

3 dwg