Centrifugal Pump and Series of Centrifugal Pumps

Abstract

A centrifugal pump having a pump housing, a bearing support assembly connected to the pump housing, a housing cover between the pump housing and the bearing support assembly, a rotationally drivable shaft supported in the bearing support assembly. The shaft extends into the pump housing through the bearing support assembly and the housing cover, coaxially to an axis of rotation. The pump further includes an impeller arranged in the pump housing and fastened to the shaft. At least two of the pump housing, housing cover, bearing support assembly, drivable shaft and impeller are configured in conformance with at least two standards, such that interface areas that are not defined by the standards between pairs of the pump components are geometrically identical. The invention further relates to a series of centrifugal pumps using such a centrifugal pump.

1 - 6 . (canceled) 
     
     
         7 . A centrifugal pump, comprising:
 a pump casing,   a bearing support assembly connected directly or indirectly to the pump casing,   a casing cover arranged between the pump casing and the bearing support assembly,   a rotationally drivable shaft configured to be supported in the bearing support assembly and extend into the pump casing through the bearing support assembly and casing cover coaxially with respect to an axis of rotation of the shaft, and   an impeller arranged in the pump casing and fastened on the shaft,   wherein   at least two of the components of the pump casing, bearing support assembly, casing cover, rotationally drivable shaft and impeller are shaped in a manner that conforms to component geometry requirements of at least one industry standard, and   between-component interface areas of the at least two components which are not required by the at least one industry standard to be shaped in accordance with the component geometry requirements are shaped to interface with geometrically identical between-component interface areas of corresponding pump components shaped in a manner to conform to component geometry requirements of another industry standard.   
     
     
         8 . The centrifugal pump as claimed in  claim 7 , wherein
 the between-component interface areas of the pump casing and the casing cover have contacting surfaces that are geometrically complementary.   
     
     
         9 . The centrifugal pump as claimed in  claim 7 , wherein
 the between-component interface areas of the pump casing and the impeller have contacting surfaces that are geometrically complementary.   
     
     
         10 . The centrifugal pump as claimed in  claim 7 , wherein
 the between-component interface areas of the casing cover and the impeller have contacting surfaces that are geometrically complementary.   
     
     
         11 . The centrifugal pump as claimed in  claim 8 , wherein
 the between-component interface areas of the pump casing and the impeller have contacting surfaces that are geometrically complementary.   
     
     
         12 . The centrifugal pump as claimed in  claim 8 , wherein
 the between-component interface areas of the casing cover and the impeller have contacting surfaces that are geometrically complementary.   
     
     
         13 . The centrifugal pump as claimed in  claim 9 , wherein
 the between-component interface areas of the casing cover and the impeller have contacting surfaces that are geometrically complementary.   
     
     
         14 . The centrifugal pump as claimed in  claim 8 , wherein
 the between-component interface areas of the pump casing and the impeller have contacting surfaces that are geometrically complementary, and   the between-component interface areas of the casing cover and the impeller have contacting surfaces that are geometrically complementary.   
     
     
         15 . The centrifugal pump as claimed in  claim 7 , wherein
 the between-component interface areas of the casing cover and the bearing support assembly have contacting surfaces that are geometrically complementary.   
     
     
         16 . The centrifugal pump as claimed in  claim 7 , wherein
 the between-component interface areas of the casing cover and the bearing support assembly have contacting surfaces that are geometrically complementary.   
     
     
         17 . The centrifugal pump as claimed in  claim 7 , wherein
 the between-component interface areas of the shaft and the impeller have contacting surfaces that are geometrically complementary.   
     
     
         18 . The centrifugal pump as claimed in  claim 8 , wherein
 the between-component interface areas of the shaft and the impeller have contacting surfaces that are geometrically complementary.   
     
     
         19 . The centrifugal pump as claimed in  claim 9 , wherein
 the between-component interface areas of the shaft and the impeller have contacting surfaces that are geometrically complementary.   
     
     
         20 . The centrifugal pump as claimed in  claim 10 , wherein
 the between-component interface areas of the shaft and the impeller have contacting surfaces that are geometrically complementary.   
     
     
         21 . The centrifugal pump as claimed in  claim 11 , wherein
 the between-component interface areas of the shaft and the impeller have contacting surfaces that are geometrically complementary.   
     
     
         22 . The centrifugal pump as claimed in  claim 12 , wherein
 the between-component interface areas of the shaft and the impeller have contacting surfaces that are geometrically complementary.   
     
     
         23 . The centrifugal pump as claimed in  claim 13 , wherein
 the between-component interface areas of the shaft and the impeller have contacting surfaces that are geometrically complementary.   
     
     
         24 . The centrifugal pump as claimed in  claim 14 , wherein
 the between-component interface areas of the shaft and the impeller have contacting surfaces that are geometrically complementary.