Submersible water pump

Abstract

The present invention is a transfer or drainage pump, comprising an engine, usually electric, contained in a sealed body, that powers a turbine; said turbine sucks liquid that is close to the suction nozzle, and said liquid is expelled through an outlet duct. The pump includes an external casing with a top lid, a bottom lid and a wall that surrounds the pump, and includes a set of small holes extending over the inferior area of its surface, near the suction nozzle, and a set of bigger holes extending over the superior area of the casing. The present invention also includes a set of space maintainer appliances for the detachment of textile products, sanitary towels, towels, rags that are objects that produce the greater damage to submersible pumps due to the obstruction they can provoke.

What is claimed is: 
     
         1 . A submersible water pump, comprising an external casing surrounding the body of the pump, said casing including a top lid, a bottom lid and a surrounding wall, said wall with small holes near the area where the suction nozzle is located and, in the rest of the surrounding wall, big holes for the passage of water and solid material 
     
     
         2 . The submersible water pump of  claim 1 , comprising a casing where the sum of the area of the small holes where the suction nozzle is located have a minimum total surface for the flow of water of at least of 500 cm2. 
     
     
         3 . The submersible water pump of  claim 1 , comprising a casing where the big holes have a diameter equivalent to the maximum diameter of solids allowed by the turbine. 
     
     
         4 . The submersible water pump of  claim 1 , comprising a casing where the big holes have a diameter almost as big as the maximum diameter of solids allowed by the turbine. 
     
     
         5 . The submersible water pump of  claim 1 , comprising space maintainers appliances to keep objects away from the casing wall. 
     
     
         6 . The submersible water pump of  claim 5 , where the space maintainers appliances include means to fit or be fixed to the casing holes. 
     
     
         7 . The submersible water pump of  claim 5 , where the space maintainers appliances comprise a thin ductile thread, with a certain elasticity, such as a wire, or a plastic thread. 
     
     
         8 . The submersible water pump of  claim 5 , where the space maintainers appliances comprise a wavy U-shape. 
     
     
         9 . The submersible water pump of  claim 5 , where the space maintainers appliances comprises a multiheaded shape. 
     
     
         10 . The submersible water pump of  claim 5 , where the space maintainers appliances comprise a Omega-like head shape. 
     
     
         11 . The submersible water pump of  claim 5 , comprising space maintainers appliances, where the space maintainers appliances include means to fit or be fixed to the casing holes, said space maintainers appliances are formed by a thin ductile thread, with a certain elasticity, such as a wire, or a plastic thread with an omega-like head shape or wavy U-shape, to keep objects away from the casing wall. 
     
     
         12 . The submersible water pump of  claim 11 , comprising an electric flow sensor fixed to the casing wall.