초록 ▼

A method is provided for placement of selected quantities of gas-producing solid fumigant at selected locations within the depth of a bulk-stored commodity within a storage compartment, such as grain loaded into the hold of a ship. The invention comprises a fabric sleeve projecting downwardly into t

A method is provided for placement of selected quantities of gas-producing solid fumigant at selected locations within the depth of a bulk-stored commodity within a storage compartment, such as grain loaded into the hold of a ship. The invention comprises a fabric sleeve projecting downwardly into the grain with a closed lower end at a selected depth, and an open filler pipe received into the sleeve through which a selected quantity of fumigant is poured. The filler pipe is withdrawn to leave the fumigant at a selected depth within the sleeve, whereupon the grain compresses against and closes upper unfilled sleeve portions thereby isolating the fumigant at a selected depth within the grain where it produces penetrating toxic gases to exterminate pests. In one form, the sleeve and filler pipe are inserted as an assembly to a relatively shallow depth within the grain subsequent to loading of the hold. In another form, the sleeve and filler pipe are sized to project for a substantial depth into the grain and are suspended in place prior to loading of the hold, with a guide tube being supported within a substantial upper region of the sleeve to define an open column through which the filler pipe may be withdrawn without compressive resistance from the grain. In either form, residue from the solid fumigant is contained within the sleeve for easy separation and removal from the grain for disposal.

대표청구항 ▼

A method of fumigating grain or other bulk-stored commodity in large storage compartments, using solid fumigant which, when placed in the compartment, releases fumigating gas and produces powder residue, comprising the steps of: positioning a selected number of gas- and moisture-pervious collapsible

A method of fumigating grain or other bulk-stored commodity in large storage compartments, using solid fumigant which, when placed in the compartment, releases fumigating gas and produces powder residue, comprising the steps of: positioning a selected number of gas- and moisture-pervious collapsible sleeves, having closed lower ends for holding the solid fumigant and powder residue, so that their lower ends are at selected depths within the grain or other commodity; positioning filler pipes individually within the sleeves so that they extend from above the grain or other commodity to a location near the lower ends of the sleeves; pouring, through the filler pipes to the lower ends of the sleeves positioned within the grain, a quantity of fumigant sufficient to fill only a region of the sleeves disposed below the upper surface of the grain or other commodity; removing the filler pipes from the sleeves whereby the grain or other commodity compresses against and closes off the sleeves above the fumigant therein to prevent escape of generated toxic gases other than by penetration through the grain or other commodity; and permitting fumigant to pass through the grain or other commodity. A method of fumigating grain or other bulk-stored commodities in large storage compartments, using solid fumigant which, when placed in the compartment, releases fumigating gas and produces powder residue, comprising the steps of: inserting a filler pipe, with an open upper pipe end and an open lower pipe end, into a collapsible sleeve of gas and moisture permeable fabric, said sleeve having a closed lower end, and orienting the pipe so that the open upper pipe end is generally adjacent an open upper end of the sleeve the open lower piper end is generally adjacent the lower end of the sleeve; inserting a guide tube into an upper portion of the sleeve, about the pipe; suspending the assembled pipe and sleeve within the compartment prior to loading with the grain or other commodity so that the guide tube is held within an upper portion of the sleeve and the upper ends of the pipe and sleeve are disposed at least slightly above the upper surface of the grain or other commodity when the grain or other commondity is loaded into the compartment; loading the grain or other commodity into the compartment; pouring a selected quantity of the fumigant into the upper end of the suspended filler pipe for passage through the filler pipe to the lower end of the sleeve, to fill the sleeve to a position at least slightly below the guide tube; and withdrawing the filler pipe from the sleeve leaving the sleeve lower end within the grain or other commodity; and permitting fumigant to pass through the grain or other commodity.