초록 ▼

An elongated pipe installed the depth of a bulk storage bin or silo for raw or finished agricultural goods receives through a capped exterior access opening a supply of solid chemical fumigant for producing phosphine gas. The buildup of gas in the pipe creates pressure so that the gas exits through

An elongated pipe installed the depth of a bulk storage bin or silo for raw or finished agricultural goods receives through a capped exterior access opening a supply of solid chemical fumigant for producing phosphine gas. The buildup of gas in the pipe creates pressure so that the gas exits through hooded ports formed in the pipe to permeate and saturate the bulk goods in the bin and to kill pests therein. Residual fumigant is removed from the pipe.

대표청구항 ▼

A fumigating apparatus comprising: container means for confining a coherent aggregate mass of particulate agricultural materials, an elongated member extending the depth of the container means and forming a passage-like gas chamber extending vertically through the interior of the coherent aggregate

A fumigating apparatus comprising: container means for confining a coherent aggregate mass of particulate agricultural materials, an elongated member extending the depth of the container means and forming a passage-like gas chamber extending vertically through the interior of the coherent aggregate mass confined within the container means, a closure sealing said elongated member at its bottom end; said member having a top end extending out of said container means; said top end having an upwardly directed opening formed therein for said gas chamber disposed at an accessible exterior location relative to said container means, cap means for selectively closing said access opening and including support means within said chamber at said opening when the cap means are in closed position, fumigant suspension means connected to said support means and gravitationally insertable into and suspendable within said gas chamber through said access opening whereby selected quantities of solid gas generating fumigant are suspended at different selected levels in said gas chamber, said cap means have sealing means for closing and sealing said gas chamber at said access opening so that pressure build up will occur when said fumigant in said chamber changes to a gaseous form, and spaced ports in said elongated member for directing the pressurized gas outwardly into the coherent mass to permeate and saturate the agricultural products, said cap means being removable from the access opening, whereby said support means together with said fumigation means and any residual fumigant may then be removed from the gas chamber through said access opening.