Two stage conical liquid ring pump having removable manifold, shims and first and second stage head o-ring receiving boss

Abstract

A first head of a liquid ring pump has an inlet, an outlet, a shaft receiving aperture extending there through, and an internal end. The internal end includes a boss with a side wall. The boss is received by a pump body. An interstage manifold is removeably coupled to the pump without being integral with or connected to the pump body. An o-ring can be located between a side wall of the boss and an internal side wall of the body.

1 . A liquid ring pump comprising:
 a first head, said first head having an inlet, an outlet, a shaft receiving aperture extending there through, and an internal end, wherein said internal end includes a boss, said boss having a side wall;   a second head having an inlet, an outlet and an internal end;   a body having a first end coupled to said internal end of said first head and a second end coupled to said internal end of said second head, and wherein   said first end of said body receives said boss.   
   
   
       2 . The liquid ring pump of  claim 1 , wherein said first head outlet is removably coupled to a first end of an interstage manifold, and wherein
 said second head is removably coupled to a second end of said interstage manifold.   
   
   
       3 . The liquid ring pump of  claim 2 , wherein said body is without said manifold integral thereto. 
   
   
       4 . The liquid ring pump of  claim 1 , wherein said first head is a first stage head. 
   
   
       5 . The liquid ring pump of  claim 1 , wherein said internal end of said first head has a shim receiving surface, said shim receiving surface not forming a surface of said boss. 
   
   
       6 . The liquid ring pump of  claim 5 , wherein the shim receiving surface has a plurality of apertures there through. 
   
   
       7 . The liquid ring pump of  claim 6 , wherein a plurality of shims are between an end wall of said body and said shim receiving surface. 
   
   
       8 . A head for a liquid ring pump, said head comprising;
 an internal end wherein said internal end has a rabbet and a recessed portion, said rabbet has a side wall;   an inlet;   an outlet;   a shaft receiving aperture extending through said head, and wherein   said recessed portion is between said shaft receiving aperture and said rabbet side wall.   
   
   
       9 . The head of  claim 8 , wherein said head is a first stage head of a two-stage liquid ring pump and wherein said head includes a manifold mating flange at said outlet. 
   
   
       10 . The head of  claim 8 , wherein said head is a second stage head of a two-stage liquid ring pump, and wherein said head includes a manifold mating flange at said inlet, and wherein said inlet is separated into an air receiving chamber and a liquid receiving chamber. 
   
   
       11 . The head of  claim 8 , wherein said rabbet side wall has a groove therein. 
   
   
       12 . The head of  claim 8 , wherein said internal end has a shim receiving surface, said boss between said shim receiving surface and said recessed surface.