US 4,182,591 AGranted

Apparatus for transferring flowable materials from a first vessel into a second vessel

OwnerKarl-Heinz Stanelleinventor

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Abstract

Apparatus for transferring pulverulent or granular material from an opening at the lower end of a silo into a vessel which is moved to a position below such opening has a vertical duct with a rigid upper section which is affixed to the silo, a rigid lower section which is surrounded by and is rigidly connected to a downwardly tapering funnel and serves to discharge flowable material into the vessel by way of an opening in the top wall of the vessel, and a bellows which is disposed between and is separably connected with the two rigid sections. The lower section and the funnel are movable up and down by means of a winch and several cables or chains whose lower end portions are attached to the funnel and/or to the lower section. A cover which normally overlies the open upper side of the funnel is movable to a raised position in which it surrounds the upper section of the duct. This provides room for insertion of an outer bellows whose lower end portion is sealingly connectable with the upper end portion of the funnel and whose upper end portion is connectable with the marginal portion of the cover. Air which is expelled from the vessel flows between the funnel and the lower section of the duct in the lower position of the cover; such air escapes by way of a pipe on the cover. When the cover is raised and the outer bellows surrounds the bellows of the duct, the compartment admits air into the annular space between the two bellows, and the air again escapes by way of the aforementioned pipe on the cover.

Claims11

Dependent claims

Apparatus for transferring flowable materials from an upper vessel into a lower vessel, comprising an upright duct including a rigid stationary upper section arranged to receive material from the upper vessel, a rigid lower section arranged to discharge material into the lower vessel, and a deformable median section intermediate said upper and lower sections;

a funnel spacedly surrounding and rigid with said lower section so that said funnel and said lower section define a compartment for the entry of air which is expelled from the lower vessel during admission of material via said duct;
means for moving said funnel and said lower section up or down with attendant deformation of said median section;
an annular cover movable lengthwise of said duct between a first position in which it surrounds said lower section and overlies said funnel and a second position in which it surrounds said upper section;
first fastener means for separably securing said cover to said funnel in said first position of said cover;
second fastener means separably securing said cover to said first section in said second position of said cover;
an elongated tubular bellows insertable between said cover and said funnel in said second position of said cover;
third fastener means for separably securing said bellows to said cover in the second position of said cover;
and fourth fastener means for separably securing said bellows to said funnel in said second position of said cover so that said bellows is deformable with said median section in response to movement of said lower section and said funnel relative to said upper section in said second position of said cover.

5 more elements

Dependencies are inferred from the claim text.