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Energy efficiency is the most important indicator of the quality of food grinders

https://doi.org/10.20914/2310-1202-2019-2-56-62

Abstract

A brief analysis of the methods of grinding technological raw materials from the standpoint of energy efficiency has been performed. Studies show that cutting (grinding) the feedstock into pieces of a certain size is the most energy-intensive. Existing designs of cutting elements of grinding mechanisms (cutting blade, cutting edge) are not optimal from the standpoint of energy efficiency. For example, the cutting blade in the working hole has a taper angle of 90°, and the taper angle of the cutting blade on the blades of the movable knife is also in the range of 80–90°. It is proposed to make the sharpening angles of the cutting blades on the blades of a movable knife equal to 5–8°. In addition, the blades of such a knife should have the shape of a classic wedge in all cross sections. Reducing the angle of sharpening of the cutting blade in the working hole of the grill to such values does not succeed in terms of design features (in particular, without violating transparency indicators). The reserves of reducing the angle of sharpening of the cutting blade in the working hole are shown (this angle can be less than 90°). The performed studies indicate that the smaller the energy costs for grinding the feedstock, the less it is rubbed and squeezed out of the holes of the grate. It can be assumed that the organoleptic properties did not deteriorate after grinding (but remained). The lower the transparency of the lattice, the grinding process is more energy-consuming. The smaller the sharpening angles of the cutting blades of the knives, the more energy-efficient the grinding process. The worse the quality of the crushed raw materials, for example, meat, which is characterized by the excessive presence of connective and cartilage tissues, films, etc., the more energy-efficient is the grinding process with knives with cutting blades with minimal sharpening angles.

About the Authors

O. V. Islamova
Kabardino-Balkarian State University
Russian Federation
Cand. Sci. (Engin.), associate professor, quality management department, Chernyshevsky str., 173, Nalchik, 360000, Russia


A. Z. Tokov
Kabardino-Balkarian State University
senior lecturer, quality management department, Chernyshevsky str., 173, Nalchik, 360000, Russia


F. A. Ataeva
Kabardino-Balkarian State Agrarian University
Cand. Sci. (Hist.), associate professor, history and philosophy department, Lenin str., 1, Nalchik, 360000, Russia


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For citations:


Islamova O.V., Tokov A.Z., Ataeva F.A. Energy efficiency is the most important indicator of the quality of food grinders. Proceedings of the Voronezh State University of Engineering Technologies. 2019;81(2):56-62. (In Russ.) https://doi.org/10.20914/2310-1202-2019-2-56-62

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ISSN 2226-910X (Print)
ISSN 2310-1202 (Online)