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公开(公告)号：EP2313660A1
公开(公告)日：2011-04-27
申请号：EP08756888.7
申请日：2008-06-04
申请人： Supavac Pty Ltd
发明人： KROHN, Mark
摘要： A pneumatic evacuation pump including: an inlet assembly (10) having an inlet valve (14) interposed between an inlet accepting material (13) from a material supply and a charging port (17) and selectively operable purge air injection means (20) located on the charging port side of said inlet valve; a chamber of selectable length (11 ) and substantially constant cross section and having a charge end opening to said charging port and a discharge end; and a delivery assembly (12) having a passage opening to said discharge end and extending to a delivery outlet, a delivery valve (24) interposed in said passage between said discharge end and said delivery outlet, a selectively operable, venturi vacuum source (31) opening to said passage between said discharge valve and said discharge end, and selectively operable exhaust air injection means (41) located downstream of said discharge valve and utilizing exhaust air from said venturi; a compressed air supply supplying said venturi and said purge air injection means; and control means acting to coordinate a' cycle of operation of said venturi vacuum source, said purge air injection means, said exhaust air injection means and said inlet and delivery valves.
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公开(公告)号：EP0925454A4
公开(公告)日：2001-01-03
申请号：EP97937363
申请日：1997-09-08
申请人： FUTUREPUMP PTY LTD
发明人： LUCAS DERICK ROSS
CPC分类号： F04F5/34 , F04F5/24 , Y10T137/86075
摘要： A pump for both filling and emptying containers with liquids, flowable solids, etc. has a body (20) which is screwed into a bung hole (15) in the top wall of the container. According to the state of evacuation or pressurisation produced in the container by the pump, "liquid" will enter or leave the container via pipe (21) passing through the body (20) of the pump. The motive power for the pump is a compressed air source (14) which provides air to a venturi (31) positioned in a passage (24) connecting the interior of the container with the exterior via vented (27) chamber (25). Air flowing through air ports (32) in the venturi generates a vortex which creates air flow through passage (24). By turning handle (29) the venturi may be rotated so as to reverse its orientation and thus reverse the direction of air flow to either pressurise or evacuate the container. Alternatively a pair of oppositely-directed venturis selectively connectable to air passage (24) may be used to perform the emptying and filling functions.
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公开(公告)号：EP0925454A1
公开(公告)日：1999-06-30
申请号：EP97937363.0
申请日：1997-09-08
申请人： Futurepump Pty. Ltd.
发明人： LUCAS, Derick Ross
CPC分类号： F04F5/34 , F04F5/24 , Y10T137/86075
摘要： A pump for both filling and emptying containers with liquids, flowable solids, etc. has a body (20) which is screwed into a bung hole (15) in the top wall of the container. According to the state of evacuation or pressurisation produced in the container by the pump, 'liquid' will enter or leave the container via pipe (21) passing through the body (20) of the pump. The motive power for the pump is a compressed air source (14) which provides air to a venturi (31) positioned in a passage (24) connecting the interior of the container with the exterior via vented (27) chamber (25). Air flowing through air ports (32) in the venturi generates a vortex which creates air flow through passage (24). By turning handle (29) the venturi may be rotated so as to reverse its orientation and thus reverse the direction of air flow to either pressurise or evacuate the container. Alternatively a pair of oppositely-directed venturis selectively connectable to air passage (24) may be used to perform the emptying and filling functions.
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