Powder particle size distribution control device and method of disc mill system

Abstract

The invention provides a powder particle size distribution control device and a method of a disc mill system. The device comprises a feeding device, a movable disc rotating speed adjusting device, a servo system, a sampling device, a powder particle size distribution detecting device and an upper computer system, wherein the feeding device is connected with the upper computer system; a frequency converter is respectively connected with the upper computer system and a three-phase asynchronous motor; the three-phase asynchronous motor is connected with a movable grinding disc of the disc mill system; the servo system drives the movable grinding disc to horizontally move; the powder particle size distribution detecting device measures and analyzes powder samples, and adjusts the gap of grinding discs, the rotating speed of the movable disc and the feeding quantity of the disc mill system; and the upper computer system outputs signals of controlling the frequency converter and instructions of controlling the servo system to increase or reduce the gap of the grinding discs. The servo system is adopted to drive the horizontal displacement of the movable grinding disc, so that the control precision of the displacement of the movable grinding disc is effectively improved; a position sensor is adopted to return actual displacement data of the movable grinding disc; the given displacement of the movable grinding disc is corrected in real time; and the gap size of the grinding discs is used for realizing the powder particle size distribution control.

Description

technical field [0001] The invention relates to the technical field of powder distribution control of a disk grinding system, and relates to a device and method for controlling powder particle size distribution of a disk grinding system. Background technique [0002] As an important industrial raw material and product, powder is used more and more widely. Among various physical parameters of powder, particle size is one of the most important parameters. When the powder is used as an industrial raw material or product, the particle size of the powder is its own quality index and must meet certain particle size requirements. Too large or too small will affect the production index requirements and efficiency. However, in different industrial processes, the requirements for powder particle size are also different. For example, in the food processing industry, powder particle size is often used as one of the evaluation indicators for the quality grade of wheat flour. By control...

AI Technical Summary

Problems solved by technology

The hydraulic adjustment is to use the hydraulic system to drive the moving grinding disc to move horizontally, but the two methods have limited precision in the control of the grinding disc gap, and the mechanical adjustment method requires manual adjustment, resulting in a lag in sampling time

The hydraulic system is usually used in occasions that need to provide a relatively high pressure for the movable grinding table. When the pressure for driving the movable grinding table is not high, using a hydraulic system to drive the movable grinding table to move often causes a lot of waste

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