Grinding Mill Sensor

Grinding Mill Sensor

Summary of contents: The sensor of the grinding mill usually indicates the material level of the feeding system. There are two types of mechanical gravity level sensor and electric level sensor. This article will briefly introduce the small mill. Two kinds of sensors, in addition, capacitive and photoelectric sensors are currently used in production applications.

The sensor of the grinding mill usually indicates the powder level of the feeding system. There are two types of mechanical gravity level sensor and electric level sensor. This paper will briefly introduce the two sensors of the small mill. In addition, capacitive and photoelectric sensors are currently used in production applications.

1. Mechanical gravity type level sensor

The mechanical gravity type level sensor of the grinding mill has simple structure, low cost and convenient adjustment, but the stability and reliability are not ideal. The working principle is: after the branch valve obtains the material level signal, the mechanical lever passes the position signal through the pneumatic valve. Passed to the pneumatic servo system, through the working cylinder of the system to perform the opening gate size, switch feeding roller, control the grinding roller's clutch operation.

2. Electric level sensor

The electric level sensor of the ultra-fine grinding machine obtains the changed material level signal from the feeding control system, and controls the feeding motor of the feeding mechanism of the grinding machine driven by the frequency converter to realize the feeding of the feeding roller through the conversion control circuit. Speed control and clutch roll.

3, capacitive sensor

The capacitance of the measured material of the grinding mill has a great influence on the accuracy of the sensor. Due to the nature of the material and the way of processing the material of the mill, the dielectric constant of the material to be tested will change. The sensor must be calibrated by automatic circuit compensation, so the cost of such sensors and circuits is high.

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