F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
F04B 3/00 (2006.01) F04B 5/02 (2006.01) F04B 7/04 (2006.01) F04B 39/00 (2006.01) F04B 53/12 (2006.01) F04B 15/02 (2006.01)
Patent
CA 2041511
A dual-acting, reciprocating piston pump is provided which comprises a pump body formed with a passageway having an inlet and a discharge outlet which receives a piston assembly including a plunger rod carrying a valve plate or spider, a shovel rod carrying a shovel disc and a rod connector formed with a valve seat which interconnects the plunger rod and shovel rod. A tubular check valve is carried on the rod connector between the valve seat and the valve plate in sliding contact with the internal wall in the pump body formed by the passageway, which divides the passageway into an upper pumping chamber communicating with the discharge outlet and a lower pumping chamber communicating with the inlet. A second check valve is located at the inlet to the passageway in the pump body and is movable between an open and closed posi- tion relative thereto.
ompe à piston alternatif à double effet comprenant un corps de pompe formé d'un passage ayant un orifice d'aspiration et une sortie de refoulement qui reçoit un piston équipé incluant une tige de piston portant une plaque porte-soupape, une tige de transport munie d'un disque et un raccord à tige formé d'un siège de soupape qui relie la tige du piston et la tige de transport. Un clapet tubulaire est porté par le raccord à tige entre le siège de soupape et la plaque porte-valve, contre glissant la paroi intérieure du corps de pompe formée par le passage dans une chambre de pompage supérieure communiquant avec l'orifice de décharge et une chambre de pompage inférieure communiquant avec l'orifice d'aspiration. Un deuxième clapet se trouve à l'entrée du passage dans le corps de pompe et peut être mis en position ouverte ou fermée par rapport à ce dernier.
Devries James E.
Rosen Samuel R.
Schneider Robert D.
Corporation Nordson
Macrae & Co.
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