Liquid chemical dispensing unit

Claim 1

Apparatus for storing and dispensing a liquid chemical at a uniform spray rate comprising: a cart having a frame structure comprising a rectangular base, the base including a rectangular lower tank support bed horizontally disposed and having a marginal lip extending upward from the bed; four vertically extending L-shaped riser struts, each joined to a different corner of the base; a first pair of bed support struts, the struts of the first pair being disposed parallel to one another, and the first pair defining a plane normal to the L-shaped riser struts, and a second pair of bed support struts disposed normal to and in the plane of the first pair of bed support struts, the first and second pairs of bed support struts being joined to the riser struts; a planar rectangular upper bed for supporting a plurality of tanks, the bed having edge portions disposed on the first and second pairs of bed support struts; upper and lower longitudinal panel supports disposed horizontally in a parallel spaced-apart relationship above the upper and lower beds, respectively; upper and lower apertured rectangular guide panels having a plurality of tank guiding openings therein for maintaining a plurality of tanks in a spaced-apart relationship and in an upright position, the panels being positioned horizontally and having edge portions disposed on the upper and lower panel supports; an upper set of cylindrical tanks disposed upright on the upper bed and within the openings of the upper panel, and a lower set of cylindrical tanks disposed upright on the lower tank support bed and within the openings of the lower panel, each of the upper and lower tanks being of the type having a cylindrical liquid support chamber, an upper portion, a gas-impervious inlet fitting on the upper portion including a short tube extending partly into the chamber, an outlet fitting including a siphon tube extending substantially into the chamber for communicating a fluid from the bottom of the chamber to the fitting, a liquid loading opening within the upper portion of the tank, and a gas-tight locking unit for sealing the opening following the loading of a liquid chemical into the tank; a gas manifold comprising a pipe having two closed ends, a plurality of hose fittings and a pressure receiving fitting; a liquid manifold comprising a pipe having a closed end and a plurality of hose fittings along the length thereof and a liquid outlet fitting opposite the closed end; a plurality of pressure communicating hose elements coupling the hose fittings of the gas manifold to the inlet fittings of the upper tanks; a plurality of fluid communicating hose elements coupling the outlet fittings of the upper tanks to the inlet fittings of the lower tanks; and a plurality of liquid communicating hose elements coupling the outlet fittings of the lower tanks to the inlet fittings of the liquid manifold; the fluid dispensing system thereby providing a plurality of serially connected upper and lower tank pairs, the pairs being connected in parallel between the liquid and gas manifolds to provide a simultaneously depletable liquid chemical at an outlet of the manifold at a high available flow rate.