Reciprocating pump with screw actuator

Details Reciprocating pump with screw actuator Reciprocating pump with screw actuator

F - Mech Eng,Light,Heat,Weapons

04

B

F04B 47/02 (2006.01) F04B 53/10 (2006.01)

Patent

CA 2451907

A reciprocating pump includes a stationary housing and a travelling housing. The travelling housing is telescopically received within the stationary housing and is movable from a retracted position to an extended position. A screw is provided having a lower end and an upper end. The screw is housed within the stationary housing, with the upper end of the screw extending into the travelling housing. A nut is secured to a lower end of the travelling housing. The nut engages the screw. Upon rotation of the screw in a first direction, the nut travels toward the upper end of the screw lifting the travelling housing to the extended position. Upon rotation of the screw in a second direction, the nut travels toward the lower end of the screw lowering the travelling housing to the retracted position. The polish rod is coupled to the travelling housing.

Pompe alternative comprenant un logement stationnaire et un logement mobile. Le logement mobile est introduit par mouvement télescopique dans le logement stationnaire et se déplace à partir d'une position rentrée à une position sortie. Une vis munie d'une extrémité inférieure et d'une extrémité supérieure est comprise. La vis est logée dans le logement stationnaire, l'extrémité supérieure de la vis se prolongeant dans le logement mobile. Un écrou est fixé à l'extrémité inférieure du logement mobile. L'écrou s'engage sur la vis. Lors de la rotation de la vis dans une première direction, l'écrou se déplace vers l'extrémité supérieure de la vis, ce qui soulève le logement mobile vers la position sortie. Lorsque la vis tourne dans une seconde direction, l'écrou se déplace vers l'extrémité inférieure de la vis, ce qui abaisse le logement mobile à la position rentrée. La tige polie est reliée au logement mobile.

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