Pump assembly with rapid assembly

Abstract

A centrifugal pump assembly with an electric motor arranged in a stator housing, in which a box, containing an electrical board, is arranged at one end of the stator housing, includes an intermediate element between the motor and the box, being complementary, on one side, to the stator housing and, on the other side, to the box. The intermediate element is a covering and/or connecting element.

1 . A centrifugal pump assembly, with an electric motor,
 arranged in a stator housing, in which a box, containing an electrical board, is arranged at one end of said stator housing, the centrifugal pump assembly comprising an intermediate element between said motor and said box, adapted to be integral therewith, being complementary, on one side, to said stator housing and, on another side, to said box.   
     
     
         2 . The centrifugal pump assembly according to  claim 1 , wherein said intermediate element is a tubular covering and/or a connecting element. 
     
     
         3 . The centrifugal pump assembly according to  claim 2 , wherein said tubular covering and/or said connecting element is provided with components adapted to be complementary, on one side, to components of said electrical box and, on the other side, to components of said stator housing, generating couplings by interlocking with interference. 
     
     
         4 . The centrifugal pump assembly according to  claim 2 , wherein said covering and/or said connecting element is provided with seats and/or holes adapted for the insertion of protrusions, of a lateral surface of said box, generating an interlock. 
     
     
         5 . The centrifugal pump assembly according to  claim 2 , wherein said covering and/or said connecting element is provided with teeth, on an internal tubular surface, adapted to generate an interference with projections of an outer lateral surface of the stator housing. 
     
     
         6 . The centrifugal pump assembly according to  claim 1 , wherein said box has a cylindrical extension and an end lid. 
     
     
         7 . The centrifugal pump assembly according to  claim 1 , wherein said box and said stator housing have mutually complementary contact surfaces. 
     
     
         8 . The centrifugal pump assembly according to  claim 1 , wherein said box has one or more first pins adapted to be inserted in corresponding through holes present on a contact surface of the stator housing. 
     
     
         9 . The centrifugal pump assembly according to  claim 8 , wherein said box has one or more second pins, which are extended inside the box and in the direction of the lid, the tips of which are adapted for insertion in corresponding holes present on a surface of the lid that is directed toward an inside of the box. 
     
     
         10 . The centrifugal pump assembly according to  claim 1 , wherein said electrical board is provided with male connecting plates adapted to enter female terminals connected to said electric motor. 
     
     
         11 . The centrifugal pump assembly according to  claim 1 , wherein said electrical board has, at one end, a connector adapted to be inserted in an electric power supply terminal, which is external to the pump. 
     
     
         12 . The centrifugal pump assembly according to  claim 11 , wherein at the region of insertion of said electric power supply terminal said box has a tab that protrudes with respect to said intermediate element. 
     
     
         13 . The centrifugal pump assembly according to  claim 1 , wherein said box is provided internally with a tubular body with an axis of extension that coincides with, or is parallel to, an axis of extension of said box. 
     
     
         14 . The centrifugal pump assembly according to  claim 13 , wherein said tubular body has an extension from a surface of contact with said stator housing to said lid of said box. 
     
     
         15 . The centrifugal pump assembly according to  claim 14 , wherein at a cross-section of said tubular body both said electrical board and said lid have a through hole with an axis of extension that coincides with an axis of extension of said tubular body. 
     
     
         16 . The centrifugal pump assembly according to  claim 15 , wherein said through hole and said tubular body are adapted for the insertion of a venting or inspection plug.