초록 ▼

An automatic draw-off grease interceptor 10 includes a separation tank 12 defining a chamber 40. An inlet 24 delivers an effluent stream of grease and water into the chamber which separates into a thicken layer of grease atop a water layer. A pump 70 is included for pumping grease from the chamber w

An automatic draw-off grease interceptor 10 includes a separation tank 12 defining a chamber 40. An inlet 24 delivers an effluent stream of grease and water into the chamber which separates into a thicken layer of grease atop a water layer. A pump 70 is included for pumping grease from the chamber when the grease has reached a predetermined level 120. A conductive probe 90 extends vertically in the separation tank 12 from a location above the upper surface of the effluent to a location below the predetermined level 120. An R/C oscillator circuit 112 continuously measures the amount of water in the chamber by measuring the capacitance between the probe and a wall of the tank. A controller 116 actuates the pump in response to the R/C oscillator circuit measuring a capacitance corresponding to an amount of water in the tank when the grease layer reaches the predetermined level.

대표청구항 ▼

1. An automatic draw-off grease interceptor for removing grease from an effluent stream containing grease and water, comprising:a grease/water separation tank defining a separation chamber; an effluent inlet connected with said separation tank for permitting flow of the effluent stream into said sep

1. An automatic draw-off grease interceptor for removing grease from an effluent stream containing grease and water, comprising:a grease/water separation tank defining a separation chamber; an effluent inlet connected with said separation tank for permitting flow of the effluent stream into said separation chamber to form a body of effluent in said separation chamber, the body of effluent having an upper surface; a pump adapted to pump grease from the body of effluent in said separation chamber upon a thickened layer of grease in said tank reaching a predetermined level; a grease depth level sensor comprising an elongated conductive probe extending generally vertically in said separation tank from a location above the upper surface of the body of effluent to a location below said predetermined level; a measuring means adapted to continuously measure the amount of water in the body of effluent by measuring the capacitance between the probe and a wall of the separation tank as the thickness of a layer of grease in the tank varies; and control means adapted to actuate the pump in response to said measuring means measuring a capacitance corresponding to an amount of water in said tank when said thickened layer of grease reaches said predetermined level.