초록 ▼

A protective device for a wastewater sensor of a wastewater lift station is characterized by a protector that is sealed against wastewater intrusion at an upper end and open at a tapered lower end, with the protector disposed about at least a portion of a wastewater level sensor assembly. The protec

A protective device for a wastewater sensor of a wastewater lift station is characterized by a protector that is sealed against wastewater intrusion at an upper end and open at a tapered lower end, with the protector disposed about at least a portion of a wastewater level sensor assembly. The protector is retained vertically within the lift station such that the bottom opening is proximate a bottom of the lift station. The protector may be incorporated into a wastewater level sensor assembly for a wastewater lift station utilizing, for example, a float-type water level sensor, a multiple discrete electrode-type water level sensor, or a transducer-type water level sensor.

대표청구항 ▼

1. A lift station, comprising: a tank including an outer wall that defines a reservoir for holding wastewater, the outer wall further defining an inlet and an outlet;a pump mounted to the base of the tank and submerged below the wastewater, where the pump is coupled to the outlet;a controller electr

1. A lift station, comprising: a tank including an outer wall that defines a reservoir for holding wastewater, the outer wall further defining an inlet and an outlet;a pump mounted to the base of the tank and submerged below the wastewater, where the pump is coupled to the outlet;a controller electrically coupled to the pump, the controller operatively coupled to the pump to control a level of wastewater in the reservoir of the tank;a sensor coupled to the tank, comprising: an outer, non-buoyant cover having an outer surface, a top end, a bottom end, and an interior defined between the outer surface, top end and bottom end;a cable coupled to and suspended from the top end of the cover, the cable forming an outer sleeve;an electrical line disposed within the outer sleeve of the cable, the electrical line electrically, coupled to the controller; anda plurality of sensors coupled to the cable and electrically coupled to the electrical line, wherein the plurality of sensors is spaced from one another along a length of the cable and within the interior of the cover;wherein, the top end of the cover is tapered and defines a first opening, and the bottom end is tapered and defines a second opening;further wherein, when positioned within the lift station, the bottom end is submerged below the level of wastewater and the top end is disposed above the wastewater level so that wastewater flows into the interior of the cover through the second opening and into direct contact with at least one of the plurality of sensors;further wherein the pump comprises a first pump, a second pump, and a third pump; further wherein: the first pump is controllably enabled when the level of wastewater in the tank rises above a first of the plurality of sensors, and the first pump is controllably disabled when the level of wastewater falls below the first of the plurality of sensors;the second pump is controllably operated when the level of wastewater in the tank rises above a second of the plurality of sensors, and the second pump is controllably disabled when the level of wastewater falls below the first of the plurality of sensors;the third pump is controllably operated when the level of wastewater in the tank rises above a third of the plurality of sensors, and the third pump is controllably disabled when the level of wastewater falls below the first of the plurality of sensors;further wherein, the first sensor is positioned below the second sensor, and the second sensor is positioned below the third sensor. 2. The lift station of claim 1, wherein the cover is made from PVC material. 3. The lift station of claim 1, wherein the sensor is suspended via a second cable vertically within the reservoir of the tank. 4. The lift station of claim 1, wherein the sensor is mounted vertically to the outer wall of the tank. 5. The lift station of claim 1, wherein the cover comprises an elongated tube. 6. A lift station, comprising: a tank including an outer wall that defines a reservoir for holding wastewater, the outer wall further defining an inlet and an outlet;a first pump, a second pump, and a third pump mounted to the base of the tank and submerged below the wastewater, where each of the first pump, the second pump, and the third pump is coupled to the outlet;a controller electrically coupled to each pump, the controller operatively coupled to each pump to control a level of wastewater in the reservoir of the tank;a sensor assembly coupled to the tank, comprising:an outer, non-buoyant cover having an outer surface, a top end, a bottom end, and an interior defined between the outer surface, top end and bottom end;a cable coupled to and suspended from the top end of the cover, the cable forming an outer sleeve;an electrical line disposed within the outer sleeve of the cable, the electrical line electrically coupled to the controller; anda plurality of sensors coupled to the cable and electrically coupled to the electrical line, wherein the plurality of sensors is spaced from one another along a length of the cable and within the interior of the cover; wherein:the first pump is controllably enabled when the level of wastewater in the tank rises above a first of the plurality of sensors, and the first pump is controllably disabled when the level of wastewater falls below the first of the plurality of sensors;the second pump is controllably operated when the level of wastewater in the tank rises above a second of the plurality of sensors, and the second pump is controllably disabled when the level of wastewater falls below the first of the plurality of sensors;the third pump is controllably operated when the level of wastewater in the tank rises above a third of the plurality of sensors, and the third pump is controllably disabled when the level of wastewater falls below the first of the plurality of sensors;further wherein, the first sensor is positioned below the second sensor, and the second sensor is positioned below the third sensor. 7. The lift station of claim 6, wherein the top end of the cover is tapered and defines a first opening, and the bottom end is tapered and defines a second opening. 8. The lift station of claim 7, wherein the bottom end is submerged below the level of wastewater and the top end is disposed above the wastewater level so that wastewater flows into the interior of the cover through the second opening and into direct contact with at least one of the plurality of sensors. 9. The lift station of claim 6, wherein the cover is made from PVC material. 10. The lift station of claim 6, wherein the sensor assembly is suspended via a second cable vertically within the reservoir of the tank. 11. The lift station of claim 10, further comprising a support arm mounted to a top portion of the tank, the second cable coupled to the support arm so that the cable is suspended into the reservoir from the support arm. 12. The lift .station of claim 6, wherein the sensor assembly is mounted vertically to the outer wall of the tank. 13. The lift station of claim 6, wherein the cover comprises an elongated tube.