Abstract
The article discusses the basic principles of force loading of a material in a vibro-impact grinder with a vertical and inclined working chamber. It is shown that in a grinder with a vertical working chamber the control of the material loading is limited by the presence of a relationship between the vertical and rotational oscillations of the jaws. Vibro-impact grinder with an inclined working chamber represents a new class of machines. A mathematical model of the process of interaction of the jaw with a piece of material when moving it in the working chamber is presented. Equations and graphical dependencies are obtained, which determine the phase angle of the moment of clamping the piece in the working chamber. The modes of power loading of the material in the working chamber were analyzed.
Highlights
IntroductionThe material grinding is widely used in the preparation, in the intermediate and final stages of the finished product
In modern technological processes, the material grinding is widely used in the preparation, in the intermediate and final stages of the finished product
Making a fine-grained and powder product from strong and abrasive materials using crushing and reducing equipment is associated with considerable difficulties
Summary
The material grinding is widely used in the preparation, in the intermediate and final stages of the finished product. Making a fine-grained and powder product from strong and abrasive materials using crushing and reducing equipment is associated with considerable difficulties. Crushing strong materials in the jaw and roll crushers by crushing is characterized by low speed and the number of power effects on the piece during the passage of the working chamber. The processing of strong and abrasive materials in hammer and rotary crushers leads to the intense wear of the working surfaces of the executive body; disintegrators in addition to wear are limited by the size of the input fraction; drum ball mills have low efficiency and ineffective in light manufacturing. Vibratory mills and cone inertial crushers have good performance in the processing of strong materials, with an increase in their size, the grinding efficiency decreases, which requires preliminary preparation of the input fraction
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