Online automatic detecting device of sugar juice brix

The utility model provides an online automatic detecting device of sugar juice brix. The online automatic detecting device comprises a feeding device, sensors and a controller, and is characterized in that a feeding electromagnetic valve is arranged above the feeding device on the left; sugar juice enters the feeding device from the feeding electromagnetic valve; an overflow pipe of excessive sugar juice is arranged on the left side of the feeding device; a discharging bottom electromagnetic valve is arranged at the bottom of the feeding device; the sensors are an electric bridge sensor and a temperature sensor; a floating ball is placed in the feeding device and connected with a lever; one end of the lever is connected to the electric bridge sensor; the force acts upon the electric bridge sensor through a lever supporting point; a signal is transmitted to the controller by the electric bridge sensor; the temperature sensor connected with the controller is arranged above the feeding device on the right; and the controller is connected with a display screen by a communication line interface. The online automatic detecting device of the sugar juice brix, provided by the utility model, has the advantages of simplicity in operation, low cost, strong interference resistance, high accuracy, high detecting speed, real-time online automatic detecting function and very good effect on automatic control of a sugar making process.