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A method and apparatus for metering and pumping multicomponents of high and low viscosity materials and subsequently mixing and applying the mixture includes gear pumps for pumping each component. Each gear pump has gears operating in a gear housing for receiving and pumping one of the components. T

A method and apparatus for metering and pumping multicomponents of high and low viscosity materials and subsequently mixing and applying the mixture includes gear pumps for pumping each component. Each gear pump has gears operating in a gear housing for receiving and pumping one of the components. The gear pumps are simultaneously driven at a predetermined speed and each gear pump is designed to pump a predetermined amount of its respective components, at the predetermined speed. Flexible hoses connect the pumps to an applicator. Check valves are used to maintain the pressure in these hoses when the pumps are in their at-rest position. The gear pumps may be driven at the same rotational speed but are designed to pump a predetermined amount of the different materials so that the ratio of materials can be precisely set.

대표청구항 ▼

A system for metering dual component materials comprising: a first gear pump and a second gear pump, one for receiving and pumping each of the components, a drive source for simultaneously driving said gear pumps, said gear pumps having mesh gears rotating in a gear housing and said first gear pump

A system for metering dual component materials comprising: a first gear pump and a second gear pump, one for receiving and pumping each of the components, a drive source for simultaneously driving said gear pumps, said gear pumps having mesh gears rotating in a gear housing and said first gear pump having a first clearance between a radially outer tip of said gears and said gear housing and said second gear pump having a second clearance between a radially outer tip of said gears and said gear housing, said first and second clearances selected such that said gear pumps pump a predetermined amount of each component to produce a desired ratio of the components being pumped when said pumps are driven, and an applicator for receiving said components from said gear pumps and for applying said components onto a surface or into a void.