Tank outlet fitting with flange

Abstract

An integral metallic fitting for affixing to a liquid retention tank orifice that serves to drain the tank as needed via a bottom wall orifice. The fitting comprises a tubular conduit for liquids outflow of a first diameter, a threaded segment covering the first depending end of the conduit suited for interruptible locking with a separate drain line, and a hollow core, flanged other end provided with an annular ridge disposed about the core which projects into the tank orifice and which ridge is hermetically bonded to the tank wall for safe draining.

Description

CROSS-REFERENCE to OTHER APPLICATIONS [0001] None. BACKGROUND OF THE INVENTION [0002] Large holding tanks for liquid commodities, such as tank trailers, are often provided with one or more outlet ports, sometimes located in the lower margin of the sidewalls of the tank, but usually located in the tank bottom wall itself. These liquid outlets serve to drain the contained liquid via a flexible hose at a destination site, so as to funnel the tank commodity to another processing step or perhaps to an approved waste disposal. The link between the tank outlet orifice and the extended drainage conduit usually requires a two or three piece combined aluminum and steel fitting, one flanged piece being positioned internally as an anchor plate by overlapping the bottom wall, tied to a depending threaded sleeve bonded at one end to the central core of the anchor plate, and a depending connecting nipple, which is threaded on both longitudinal ends, and is then threaded into the overlying sleeve. ...

AI Technical Summary

Benefits of technology

[0005] It is a principal object of the present invention to provide a one piece, coupling / fitting means for connecting the tank coupling and drain line, which coupling eliminates the need for a tapped steel nipple to be first joined with a flange plate / sleeve anchoring element, which means providing more facile means to dump liquid tank contents.

[0006] Another object is to provide a fitting with a shorter mounting length, limiting the fabricating of materials needed for an effective outflow fitting / coupling means.

[0007] Still another object is to provide an integral fitting having a smooth peripheral inner bore, which then minimizes residual deposit of tank contents during the drainage step, and thus decreases residual persistence of the sometimes acrid odors to those working around tank contents being off-loaded.

[0008] Yet another object of the invention is to provide a single metal, integrally-fitting, readily machined, which placement in the upon tank bottom orifice, provides for ready weldability of the upper flange element of the fitting to the tank outlet, and that serves to eliminate liquid linkage at the interface of tank bottom wall and outlet fitting. SUMMARY OF THE INVENTION

Problems solved by technology

To effect this tank outlet orifice and the transport hose interlinking, such requires the sizing and machining of three metal elements, adding significant cost to this necessary means for coupling a tank orifice and a local off load transport hose.

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