Reciprocating pump apparatus

Abstract

An objective is to provide a reciprocating pump apparatus which can change a position where an adaptor to be fixed to a support is attached, while having a simple form. In a reciprocating pump apparatus 10 having a crankshaft 14 directly connected to an output shaft of a driving source, positions of bolts 22 a to 22 d for fixing a bearing case 20 for closing an open end part of a crankcase 16 to the crankcase are determined such that an adaptor 40 for fixing the reciprocating pump apparatus to a support 58 is fastened to the crankcase together with the bearing case in a positionally changeable fashion. Since the position of the adaptor is changeable, the degree of freedom in the layout of apparatus improves in this structure. Also, since bolts for fixing a manifold to the crankcase are utilized for attaching the adaptor, a simple form is attained.

1 . A reciprocating pump apparatus comprising:
 a crankcase, having at least one open end part, for supporting a crankshaft;   a closing member, removably fixable to the crankcase with a first set of bolts so as to close the open end part of the crankcase; and   a pump case of a reciprocating pump, removably fixable to a side face of the crankcase with a second set of bolts;   wherein a position of the first set of bolts for fixing the closing member to the crankcase is determined such that an adaptor for fixing the reciprocating pump apparatus to a support is fastened to the crankcase together with the closing member in a positionally changeable fashion.   
   
   
       2 . A reciprocating pump apparatus according to  claim 1 , wherein the first set of bolts are arranged symmetrically about a first plane, which is including the center axes of the reciprocating pump and the axis of rotation of the crankshaft. 
   
   
       3 . A reciprocating pump apparatus according to  claim 1 , wherein the first set of bolts are arranged symmetrically about a third plane, which is orthogonal to the first plane and includes the axis of rotation of the crankshaft. 
   
   
       4 . A reciprocating pump apparatus according to  claim 1 , wherein the bolts of the first set are equally distanced from the axis of rotation of the crankshaft. 
   
   
       5 . A reciprocating pump apparatus according to  claim 1 , wherein the bolts of the first set are provided, having the same angles around the axis of rotation in the center. 
   
   
       6 . A reciprocating pump apparatus according to  claim 1 , wherein the position of the adaptor is vertically changeable; and
 a position of the second set of bolts, for fixing the pump case to the crankcase, is determined such that the pump case is fixable to the crankcase in a vertically reversed fashion.   
   
   
       7 . A reciprocating pump apparatus according to  claim 6 , wherein the second set of bolts are arranged symmetrically about the first plane. 
   
   
       8 . A reciprocating pump apparatus according to  claim 6 , wherein the second set of bolts are arranged symmetrically about the second plane, which is orthogonal to the first plane and includes the center axis of the reciprocating pump.