Sewage lift mechanism with remote alarm

Abstract

The invention is a sewage lift station having a chamber for accumulating sewage and a pump mechanism for expelling sewage to a remote location. A sewage drop pipe is provided which directs sewage entering into the station below a triggering mechanism on the pump thereby eliminating pump failure caused by solids within the sewage dropping onto it. A remote alarm system is provided to signal pump failure.

1 . A sewage lift station comprising: 
 a housing, said housing having a top, a spaced apart bottom and a contiguous wall position therebetween to form an inner chamber;    a sewage drop pipe mounted through the contiguous wall, the sewage drop pipe having an upper portion mounted outside the wall and a lower portion mounted inside the wall, said sewage drop pipe lower portion further terminating at an outlet orifice in fluid communication with the inner chamber of the housing;    a sewage inlet pipe mounted in the upper portion of the sewage drop pipe; and    a submersible pump having an inlet, a trigger mechanism and an outlet pipe;    wherein sewage passes through the inlet pipe into the sewage drop pipe and through the outlet orifice by gravitational force where the sewage accumulates within the chamber to a predetermined depth whereupon the trigger mechanism is activated and the submersible pump draws sewage through the inlet and forcibly expels it through the outlet pipe to a remote location.    
   
   
       2 . The sewage lift station of  claim 1  wherein the outlet orifice of the sewage drop pipe is positioned generally below the trigger mechanism of the submersible pump.  
   
   
       3 . The sewage lift station of  claim 1  further comprising a fluid level alarm mounted within the upper portion of the sewage drop pipe to audibly signal failure of the submersible pump when sewage backs up into the upper portion of the sewage drop pipe.  
   
   
       4 . The sewage lift station of  claim 2  wherein the sewage drop pipe is formed into the wall of the housing such that the lower portion of the drop pipe is substantially within the chamber and the upper portion of the drop pipe is substantially outside of the housing wall.  
   
   
       5 . The sewage lift station of  claim 1  wherein the sewage drop pipe is formed separately from the housing wall.  
   
   
       6 . The sewage lift station of  claim 1  wherein the sewage drop pipe is formed by a rigid barrier depending from the top of the housing substantially adjacent the inlet pipe.  
   
   
       7 . A sewage lift station comprising: 
 a housing with an inner chamber; and    a sewer inlet pipe for directing sewage to the chamber and a drop pipe connected to the inlet pipe for directing the sewage flow generally downward into the inner chamber.    
   
   
       8 . The sewage lift station of  claim 7  wherein the drop pipe has an upper portion oriented generally outside the housing and a lower portion oriented generally downward within the chamber.  
   
   
       9 . The sewage lift station of  claim 8  wherein the lower portion of the sewage drop pipe terminates at an outlet orifice in fluid communication with the inner chamber of the housing.  
   
   
       10 . The sewage lift station of  claim 9  wherein the sewage inlet pipe is mounted onto the upper portion of the sewage drop pipe.  
   
   
       11 . The sewage lift station of  claim 10  further comprising: 
 a submersible pump having a pump inlet, a trigger mechanism and an outlet pipe; and    wherein sewage passes through the inlet pipe into the sewage drop pipe and through the outlet orifice by gravitational force and whereupon the sewage accumulating within the chamber to a predetermined depth the trigger mechanism is activated and the submersible pump draws sewage through the pump inlet and forcibly expels it through the outlet pipe to a remote location.    
   
   
       12 . The sewage lift station of  claim 7  further wherein the housing further comprises a vented top.  
   
   
       13 . The sewage lift station of  claim 8  further comprising a fluid level alarm mounted within the upper portion of the sewage drop pipe to audibly signal failure of the submersible pump when sewage backs up into the upper portion of the sewage drop pipe.