Pump

Abstract

A pump has a main body. An assembling part is formed in the main body and has an assembling chamber. A mounting part is formed in the assembling chamber and has a discharging chamber. An influent hole and an effluent hole are respectively defined through an inner surface of the discharging chamber. A storage hole is defined through the assembling chamber and communicates with the effluent hole. A mounting cover is mounted on the mounting part. A motor is mounted on the main body. An impeller is located in the discharging chamber and connected with the motor. A covering assembly is mounted on the assembling part and has a storage chamber that communicates with the storage hole. When working fluid passes through the effluent hole, some of the working fluid enters the storage chamber via the storage hole, eliminating the need to additionally process the mounting cover.

What is claimed is: 
     
         1 . A pump comprising:
 a main body having
 an inlet defined through the main body; 
 an outlet defined through the main body and spaced apart from the inlet; 
 an assembling part formed in one of two side surfaces of the main body, and having
 an assembling chamber defined in a center of the assembling part; 
 
 a mounting part formed in the assembling chamber and having
 a discharging chamber defined in a center of the mounting part; 
 an influent hole defined through an inner surface of the discharging chamber and communicating with the inlet; and 
 an effluent hole defined through the inner surface of the discharging chamber, spaced apart from the influent hole, and communicating with the outlet; and 
 
 a storage hole defined through an upper part of the assembling chamber and communicating with the effluent hole; 
   a mounting cover mounted on the mounting part of the main body and closing the discharging chamber;   a motor mounted on the other side surface of the main body and having
 a shaft mounted through the main body and extending in the discharging chamber; 
   an impeller mounted on the shaft and located in the discharging chamber; and   a covering assembly mounted on the assembling part, closing the assembling chamber, and having
 a storage chamber formed between an inner surface of the covering assembly and the assembling chamber, and communicating with the storage hole and the discharging chamber. 
   
     
     
         2 . The pump as claimed in  claim 1 , wherein
 the main body further has
 a through hole defined through a center of the discharging chamber and sealingly receiving the shaft of the motor; and 
 a first returning hole defined through the upper part of the assembling chamber, spaced apart from the storage hole, and communicating with the influent hole and the storage chamber. 
   
     
     
         3 . The pump as claimed in  claim 2 , wherein
 the mounting cover has
 a second returning hole defined through the mounting cover, and communicating with the discharging chamber and the storage chamber. 
   
     
     
         4 . The pump as claimed in  claim 3 , wherein
 the covering assembly has
 a partitioning cover mounted on the assembling part of the main body, and having
 multiple connecting holes defined through the partitioning cover and spaced apart at intervals, wherein an inner surface of the partitioning cover and the assembling chamber form the storage chamber; 
 
 a membrane mounted on an outer surface of the partitioning cover; 
 an operating chamber formed between the membrane and the partitioning cover, and communicating with the storage chamber via the connecting holes; 
 a pressure cover abutting a rim of the membrane and mounted on the partitioning cover and the assembling part; and 
 a pressure chamber formed between the pressure cover and the membrane, and filled with a pressurized fluid. 
   
     
     
         5 . The pump as claimed in  claim 1 , wherein
 the mounting cover has
 a second returning hole defined through the mounting cover, and communicating with the discharging chamber and the storage chamber. 
   
     
     
         6 . The pump as claimed in  claim 5 , wherein
 the covering assembly has
 a partitioning cover mounted on the assembling part of the main body, and having
 multiple connecting holes defined through the partitioning cover and spaced apart at intervals, wherein an inner surface of the partitioning cover and the assembling chamber form the storage chamber; 
 
 a membrane mounted on an outer surface of the partitioning cover; 
 an operating chamber formed between the membrane and the partitioning cover, and communicating with the storage chamber via the connecting holes; 
 a pressure cover abutting a rim of the membrane and mounted on the partitioning cover and the assembling part; and 
 a pressure chamber formed between the pressure cover and the membrane, and filled with a pressurized fluid. 
   
     
     
         7 . The pump as claimed in  claim 1 , wherein
 the covering assembly has
 a partitioning cover mounted on the assembling part of the main body, and having
 multiple connecting holes defined through the partitioning cover and spaced apart at intervals, wherein an inner surface of the partitioning cover and the assembling chamber form the storage chamber; 
 
 a membrane mounted on an outer surface of the partitioning cover; 
 an operating chamber formed between the membrane and the partitioning cover, and communicating with the storage chamber via the connecting holes; 
 a pressure cover abutting a rim of the membrane and mounted on the partitioning cover and the assembling part; and 
 a pressure chamber formed between the pressure cover and the membrane, and filled with a pressurized fluid. 
   
     
     
         8 . The pump as claimed in  claim 2 , wherein
 the covering assembly has
 a partitioning cover mounted on the assembling part of the main body, and having
 multiple connecting holes defined through the partitioning cover and spaced apart at intervals, wherein an inner surface of the partitioning cover and the assembling chamber form the storage chamber; 
 
 a membrane mounted on an outer surface of the partitioning cover; 
 an operating chamber formed between the membrane and the partitioning cover, and communicating with the storage chamber via the connecting holes; 
 a pressure cover abutting a rim of the membrane and mounted on the partitioning cover and the assembling part; and 
 a pressure chamber formed between the pressure cover and the membrane, and filled with a pressurized fluid.