Cement automatic grinding test device

Abstract

The invention discloses a cement automatic grinding test device which includes an automatic control device, an attrition mill and a driving device, wherein the attrition mill includes a coarse grinding device and a fine grinding device; the coarse grinding device includes a grinding disc and a grindstone; the grindstone is arranged on the grinding disc; a feeding opening is formed in the middle of the grindstone; a discharge opening is formed in the grinding disc; the driving device drives the grindstone to rotate on the grinding disc; the fine grinding device includes a U-shaped trough and a grinding shaft; the grinding shaft is arranged inside the U-shaped trough; screw threads are arranged on the inner wall of the U-shaped trough and the outer wall of the grinding shaft; the driving device drives the grinding shaft to rotate inside the U-shaped trough; the discharge opening of the grinding disc is connected with the U-shaped trough; the automatic control device includes a microcomputer time switch group, a thermal relay and a contactor; the thermal relay is connected with the contactor in series; the microcomputer time switch group, the thermal relay and the contactor form a return circuit; the microcomputer time switch group can control the startup or shutdown of the contactor; a power supply is communicated with the driving device through the contactor and the thermal relay. The cement automatic grinding test device provided by the invention has the advantages of being capable of accurately controlling the grinding time and grinding fineness of the cement.

Description

technical field [0001] The invention relates to a cement test device, in particular to a cement automatic grinding test device. Background technique [0002] The small mill used in laboratory experiments is mainly controlled by the electrical cabinet to control the operation of the small mill motor, and the control cabinet is controlled by jog and self-locking. Its disadvantage is that when grinding materials, the operator needs to use a stopwatch to control the running time of the mill, and often the time for grinding experimental materials is long, and the operator will miss the stop time if he is not careful. It is impossible to accurately measure the grinding time, and the control of the fineness of the material in the experimental small mill is poor, which causes certain errors in the laboratory analysis data. Contents of the invention [0003] The object of the present invention is to provide an automatic grinding test device with reasonable design, which can precis...

AI Technical Summary

Problems solved by technology

Its disadvantage is: when grinding materials, the operator needs to use a stopwatch to control the running time of the mill, and often the time for grinding experimental materials is long, and the operator will miss the stop time if he is not careful

It is impossible to accurately measure the grinding time, and the control of the fineness of the material in the experimental small mill is poor, which causes certain errors in the laboratory analysis data

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