Water backup preventing system and monitoring system therefor
First Claim
1. A water backup preventing system for a given area having a ground buried sewer line for receiving rain and other water, the sewer line being incapable of carrying without backup thereof a given flow rate of water, the sewer line being provided at a given point therealong with at least one overflow opening into which opening water which cannot be handled by the sewer line will rise and overflow, water storage tank means below said sewer line and into which the overflow water from said opening will drain and be temporarily stored, said storage tank means having a volume to store water which cannot otherwise flow in said sewer line, pump means in the bottom portion of the storage tank for pumping water into a downstream portion of said sewer line, and pump control means for the pump means for preventing the operation of said pump means when a water backup condition exists in said sewer line and for automatically rendering said pump means operative when such condition disappears from said sewer line, so that the storage tank means can be substantially emptied and accommodate overflow conditions caused by a subsequent rainstorm.
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Accused Products
Abstract
A water backflow preventing system is provided for a given area having a sewer line for receiving rain and other water where the sewer line is incapable of carrying, without backup, a given fow rate of water. The sewer line is provided at a given point therealong with at least one overflow opening into which opening water which cannot be handled by the sewer line will rise and overflow. Water storage tank means are buried in the ground below the sewer line and into which the overflow water from said opening will drain and be temporarily stored. The storage tank means have a volume to store many thousands of gallons of water which cannnot otherwise flow in the sewer line. A pump is placed in the bottom of the storage tank means. Various float switches are placed in different parts of the system for controlling the pump. They are arranged to prevent the operation of the pump when water backup valve conditions exist in the sewer line and to automatically render the pump means operative when backflow conditions disapear from the sewer line so that the storage tank means can be substantially emptied and accommodate overflow conditions which can be caused by a subsequent rainstorm.
44 Citations
28 Claims
- 1. A water backup preventing system for a given area having a ground buried sewer line for receiving rain and other water, the sewer line being incapable of carrying without backup thereof a given flow rate of water, the sewer line being provided at a given point therealong with at least one overflow opening into which opening water which cannot be handled by the sewer line will rise and overflow, water storage tank means below said sewer line and into which the overflow water from said opening will drain and be temporarily stored, said storage tank means having a volume to store water which cannot otherwise flow in said sewer line, pump means in the bottom portion of the storage tank for pumping water into a downstream portion of said sewer line, and pump control means for the pump means for preventing the operation of said pump means when a water backup condition exists in said sewer line and for automatically rendering said pump means operative when such condition disappears from said sewer line, so that the storage tank means can be substantially emptied and accommodate overflow conditions caused by a subsequent rainstorm.
- 17. A water backup preventing system for a given area of a city, town, or the like having various intersecting streets beneath which are sewer lines which include branch sewer lines feeding into at least one common sewer line, a water backup control installation at the point where said branch sewer lines connect with a common sewer line, each of said water backflow control installations including at least one overflow opening at a point in the branch sewer line where it is about the join the common sewer line, water storage tank means below each branch sewer line and into which the overflow water from said opening will drain and be temporarily stored, said storage tank means having a volume to store water which cannot otherwise flow in said branch sewer line, pump means in the bottom portion of the storage tank, and pump control means for the pump means for preventing the operation of said pump means when water backup water conditions exist in the associated branch sewer lines and for automatically rendering said pump means operative when backflow conditions disappear from the associated branch sewer lines so that the storage tank means involved can be substantially emptied and accommodate overflow conditions caused by a subsequent rainstorm.
Specification