Single valve pump

Details Single valve pump Single valve pump

1987-08-06

1988-08-30

Freeh, William L.

Pumps

Expansible chamber type

Having pumping chamber pressure responsive distributor

137102, F04B 2100, G05D 700

Patent

active

047672919

ABSTRACT:
A down-hole pump adapted for operation in connection with a string of tubing and a string of reciprocating sucker rod. A pump includes a cylindrical housing connectable to the tubing and connected to a pump barrel; a piston rod connected to a piston disposed within the barrel and extending through the housing for connection to the sucker rod; a valve piston disposed in freely slidable relation within the barrel and around the piston rod between a down piston and an up piston; a base housing end connected to the bottom of the housing; and a top housing end connected to the top of the housing. A plurality of axially aligned liquid flow discharge openings are defined in the piston valve and the top housing end and circumferentially disposed on a first radius. A plurality of radially disposed intake openings are defined around the wall of the housing to be in flow registry with a circumferential groove defined around the wall of the valve piston when the valve piston is located in its down position and closed off from the groove when the valve is moved out of its down position. A plurality of axially aligned liquid flow intake openings are defined in the housing base and in the piston up into the circumferential groove and circumferentially disposed on a second radius larger than the first radius.

REFERENCES:
patent: 2347887 (1944-05-01), Commins

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