Rotary drive linear rod displacement pump

Abstract

A rotary drive linear rod displacement pump includes a pump housing supporting a plurality of radially spaced linear rod displacement pump segments. A rotor supporting a plurality of roller cam followers is rotatably coupled to the pump segments and is driven by a source of rotary power. As the rotor is driven, the cam followers articulate the pump segments.

1 . A rotary drive linear rod displacement pump comprising:
 a pump housing;   a plurality of displacement pump segments, supported by said pump housing, each including a pump plunger;   a plurality of valve portions, supported by said pump housing, each including a valve plunger; and   a rotor supporting a plurality of cam followers in contact with said valve plungers and said pump plungers for actuating said pump as said rotor rotates.   
     
     
         2 . A rotary drive continuous flow linear rod displacement pump comprising:
 a pump housing;   a plurality of linear rod displacement pump segments, supported by said pump housing and each including a pump plunger for actuating each of said linear rod displacement pump segments;   a plurality of valve segments, supported by said pump housing, each including a valve plunger for actuating each of said valve segments; and   a rotor, supported for rotation with respect to said pump housing, supporting a plurality of cam followers actuating said linear rod displacement pump segments and said valve segments as said rotor is caused to rotate.   
     
     
         3 . The rotary drive continuous flow linear rod displacement pump set forth in  claim 2  wherein each of said linear rod displacement pump segments include:
 a fluid chamber; and 
 a pump rod movable within said fluid chamber between a withdrawn position allowing fluid to be received into said fluid chamber and an inserted position displacing fluid and expelling it from said fluid camber. 
 
     
     
         4 . The rotary drive continuous flow linear rod displacement pump set forth in  claim 3  wherein said pump housing includes a fluid manifold defining a fluid input accumulating channel in fluid communication with said plurality of valve segments and a fluid output accumulating channel in fluid communication with said plurality of linear rod displacement pump segments. 
     
     
         5 . The rotary drive continuous flow linear rod displacement pump set forth in  claim 4  wherein said fluid input accumulating channel includes a fluid input for coupling to a supply of fluid and wherein said fluid output accumulating channel includes a fluid output for discharging fluid from said rotary drive continuous flow linear rod displacement pump. 
     
     
         6 . The rotary drive continuous flow linear rod displacement pump set forth in  claim 5  wherein said plurality of linear rod displacement pump segments and said plurality of valve segments are supported by said pump housing in a radially spaced arrangement whereby each of said plurality of linear rod displacement pump segments and said plurality of valve segments are actuated sequentially as said rotor is caused to rotate. 
     
     
         7 . The rotary drive continuous flow linear rod displacement pump set forth in  claim 6  wherein said plurality of linear rod displacement pump segments and said plurality of valve segments are operatively coupled in associated pairs in which fluid flow into said fluid chamber of each linear rod displacement pump segment flows through its associated valve segment. 
     
     
         8 . A rotary drive linear rod displacement pump comprising:
 a pump housing having a plunger plate supporting a plurality of pump plungers movable with respect to said plunger plate and a plurality of valve plungers movable with respect to said plunger plate;   a plurality of displacement pump segments, supported by said pump housing, each actuated by one of said pump plungers;   a plurality of valve portions, supported by said pump housing, each actuated by one of said valve plungers; and   a rotor supporting a plurality of cam followers contacting and depressing said valve plungers and said pump plungers as said rotor is caused to rotate.   
     
     
         9 . The rotary drive continuous flow linear rod displacement pump set forth in  claim 8  wherein said plurality of linear rod displacement pump segments and said plurality of valve segments are operatively coupled in associated pairs in which fluid flow into said fluid chamber of each linear rod displacement pump segment flows through its associated valve segment. 
     
     
         10 . The rotary drive linear rod displacement pump set forth in  claim 9  wherein said displacement pump segments each include:
 a fluid chamber formed in said housing; 
 a pump rod, coupled to a pump plunger, supported for movement between a withdrawn position and an inserted position relative to said fluid chamber; and a discharge output; and 
 a pump rod spring urging said pump rod and its coupled pump plunger toward said withdrawn position, 
 said pump plunger moving said pump rod from said withdrawn position to said inserted position as said cam followers contact said pump plunger during rotation of said rotor. 
 
     
     
         11 . The rotary drive linear rod displacement pump set forth in  claim 10  wherein said valve segments each include:
 a valve rod supported within said pump housing coupled to a valve plunger; 
 a valve closure moveable between an open condition allowing fluid to flow into said fluid chamber and a closed condition preventing fluid flow from said fluid chamber; and 
 a valve rod spring urging said valve rod and its coupled valve plunger toward said open condition; 
 said valve plunger moving said valve rod from said open condition to said closed condition as said cam followers contact said valve plunger during rotation of said rotor. 
 
     
     
         12 . The rotary drive continuous flow linear rod displacement pump set forth in  claim 11  wherein said plurality of displacement pump segments and said plurality of valve segments are supported by said pump housing in a radially spaced arrangement whereby each of said plurality of rod displacement pump segments and said plurality of valve segments are actuated sequentially as said rotor is caused to rotate.