Fast set material proportioner

The proportioner (10) has a variable speed controlled DC motor (12) having a gearbox (14) and crankshaft (16) at either end which are connected to reciprocating piston pumps (18). The outputs (18a) of the two pumps (18) are fed to a manifold (22) where the pressure of each output is measured. The us...

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Bibliographic Details
Main Authors WEIKEL WILLIAM A, MCCORMICK MARTIN P, DENESON BRET A, LARSEN DAVID M
Format Patent
LanguageEnglish
Published 29.10.2013
Subjects
BLASTING
BOTTLES, JARS OR SIMILAR CONTAINERS
CONTROLLING
DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISEPROVIDED FOR
HEATING
LIGHTING
LIQUID HANDLING
MECHANICAL ENGINEERING
OPENING, CLOSING
PERFORMING OPERATIONS
PHYSICS
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
REGULATING
SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
TRANSPORTING
WEAPONS
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Summary:The proportioner (10) has a variable speed controlled DC motor (12) having a gearbox (14) and crankshaft (16) at either end which are connected to reciprocating piston pumps (18). The outputs (18a) of the two pumps (18) are fed to a manifold (22) where the pressure of each output is measured. The user sets a setpoint pressure (e.g. 1000 psi) and the controller (26) then compares the pressures of the two components and controls the higher of the two relative to the setpoint. Ratio assurance is monitored by continuing to look at both output pressures. If one side falls below a predetermined percentage of the setpoint (50% in the preferred embodiment), an alarm may be raised or operation stopped.
Bibliography:Application Number: US20030533329