Multiple station HVLP spray coating system
A high volume low pressure (HVLP) coating application system employing a rotary vane pump and manifold assembly that provides an improved source of air for increased spray gun atomization of high solid coatings and faster applications of more even coated surfaces with continuous HVLP pressures of 10 PSI at the spray gun output and the ability to power multiple spray guns and breathing apparatus from a single manifold system.
1. A method of applying coating solutions to a surface using High Volume, Low Pressure technology to maximize transfer efficiencies and application performance, the method comprising the steps of;
A. placing said coating solutions in a flowable condition either in a spray gun cup or within pressurized lines attached to atomizing spray guns;
B. attaching a Rotary Vane Pump of minimum specific capacity in volume and pressure as an air source to an intake manifold;
C. using said manifold as a dynamic storage container for the said pressure source and connecting the atomizing spray guns directly to the manifold for maximum volume of air to be applied to the atomizing guns;
D. using large diameter capacity hoses to transfer air from the manifold to at least one of said atomizing guns to maximize the volume of air applied for atomizing said flowable coating material;
E. establishing pressure regulators within the manifold for individually regulating air pressure to each atomizing gun;
F. using a pressure relief valve within the manifold to maintain a constant pressure delivered to the atomizing guns and limit cross modulation of pressures between atomizing guns.
2. An apparatus for dispensing coating solutions comprised of;
A Rotary Vane Pump that produces at least 15 Pounds Per Square Inch (PSI) of pressure and at least 60 Cubic Feet per Minute (CFM) of air volume; a manifold that accepts compressed air from said pressure source and couples it directly to at least one atomizing gun, without use or need for external air tank storage or containment device; large diameter air hoses ⅜″ diameter or greater to couple larger volumes of compressed air from manifold to an atomizing gun cup and/or atomizing chamber; a manifold which contains adjustable pressure regulators for each atomizing gun output; a manifold that maintains a constant pressure within and limits cross modulation between air flowing to individual said atomizing guns by using a pressure relief check valve; a manifold without a limiting storage element, capable of allowing the maximum volume of air from the pressure source to be applied to at least one of said atomizing guns, paint cup or pressurized fluid line, for optimum movement of fluids supplied to at least one of said atomizing guns without the need to create differential pressures between multiple air supply lines to the cup and atomizing pressure feed to at least one of said atomizing guns; the manifold coupled to the large diameter hoses that can connect to both the atomizing gun cup or a direct pressurized coating supply line to allow versatility in use and application.
3. The apparatus according to claim 2 , further comprising multiple pods comprising pump source, manifold, coupling hoses and at least one atomizing gun, each connected to the same manifold and synchronized in use by sensory feedback and control devices on each respective pod that regulate the coating application rate, paint flow rate and coating thickness which are relayed to and controlled by a central programmable computer for optimum co-ordination and performance between pods, when used to coat large surface areas requiring consistent coating results from one section covered by a given coating pod to another, and where multiple types of coating materials could be simultaneously applied, requiring extensive co-ordination and control of the process by a control feedback system.