Speed-adjustable sealed vibration sample preparation crusher

Abstract

The invention discloses a speed-adjustable sealed vibration sample preparation crusher which comprises a shell (1), a supporting frame (2), a driving device (3), a vibration device (4), a grinding device (5), a pressing device (6) and an electric control device. The supporting frame comprises a motor support frame (21) and a damping platform (22); the driving device comprises a driving motor (31),a coupler (32) and an exciter (33); the vibration device comprises a vibration platform (41), a supporting steel body (42) and a damping mechanism (43); the grinding device comprises a bowl seat (51)and a crushing bowl (52); and the electric control device comprises a PLC, a speed regulation vibration control loop and a touch screen man-machine operation interface. The speed-adjustable sealed vibration sample preparation crusher can improve the crushing and grinding efficiency, reduces the phenomenon of friction heat generation caused by mutual torsion of a crushing bowl body, a grinding rodand a grinding ring, and is particularly suitable for solid material sample preparation, crushing and grinding operations.

Description

technical field [0001] The invention relates to a sample preparation pulverizer, in particular to a frequency-variable and speed-regulating sealed vibrating sample preparation pulverizer, which belongs to the technical field of industrial analysis material sample preparation. Background technique [0002] Industrial analysis is mainly used to test the quality of raw materials or finished products to determine whether they meet the requirements of relevant industries. For solid materials such as coal, coke, gangue, limestone, and various hard non-metallic ores, it is necessary to increase the quality of materials. To reduce the surface area and shorten the chemical reaction time of materials, it is usually necessary to mechanically crush and grind the raw materials through crushing and grinding. [0003] The sealed vibrating sample pulverizer is mainly used to crush the above-mentioned solid material raw materials, and can quickly make the material into 80-200 mesh micro-powd...

AI Technical Summary

Problems solved by technology

[0004] When the sealed vibrating sample pulverizer in the prior art is working, the vibrating disc drives the pulverizing bowl to make a horizontal circular motion at a certain frequency. At this time, there is a tendency of relative friction between the pulverizing bowl body, the grinding rod and the grinding ring. That is, relative frictional torsion occurs in the process of pulverizing the sample, and a large amount of heat is generated in the bowl, which increases the power consumption of the equipment; at the same time, the heat change inside the bowl will cause some physical or chemical changes in the material sample in the bowl, which may The result of sample analysis will be deviated. Too long working time of the sample pulverizer will cause the temperature of the material bowl to be too high, the sample will be sticky, and the pulverization time will not reach the fineness; and the vibration of the sample pulverizer is The main cause of noise, especially when the equipment starts and stops, because there will be a resonance zone between the vibration frequency generated by the driving force and the natural frequency of the machine itself, so the vibration will be particularly strong

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