Investigation of the operability of the vertical rotor of the shredder during the production of rubber crumb
https://doi.org/10.46973/0201-727X_2025_3_214
Abstract
Recently, rubber crumb, 1–3 mm in size, obtained from processing rubber products in horizontal shredders, is currently widely used as a secondary raw material. In this case, the material interacts with only two or three cutting elements, which necessitates the use of multistage shredding. The design of a vertical shredder with a stator having wedge-shaped grooves, with a vertical rotor, with a variable arrangement of adjusting and cutting knives with different numbers of teeth is proposed. An adequate regression equation has been obtained for the dependence of the maximum amount of crumbs in the range of 1-3 mm on the main factors ‒ the thickness of the adjusting knife and the increase in the number of cutting knives. Studies have shown that to obtain 70–75 % of a 1–3 mm rubber crumb, it is advisable to use a rotor with 7 cutting knives and 130 rpm, whereas with a 2 mm thick adjusting knife, a 3 mm cuboid fraction of the finished product prevails, and with a 10 mm thickness, 1 mm ragged particles predominate.
About the Authors
V. M. Kravchenko
Belgorod State Technological University named after V. G. Shukhov (BSTU)
Russian Federation
Russian Federation
Kravchenko Vladimir Mikhailovich, Chair of Mechanical Equipment, Postgraduate Student
S. Yu. Lozovaya
Belgorod State Technological University named after V. G. Shukhov (BSTU)
Russian Federation
Russian Federation
Lozovaya Svetlana Yuryevna, Chair of Mechanical Equipment, Doctor of Engineering Sciences, Professor
Yu. A. Bondarenko
Belgorod State Technological Universitynamed after V. G. Shukhov (BSTU)
Russian Federation
Russian Federation
Bondarenko Yulia Anatolyevna, Chair of Engineering Technology, Doctor of Engineering Sciences, Professor
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Review
For citations:
Kravchenko V.M., Lozovaya S.Yu., Bondarenko Yu.A. Investigation of the operability of the vertical rotor of the shredder during the production of rubber crumb. Vestnik Rostovskogo Gosudarstvennogo Universiteta Putej Soobshcheniya. 2025;(3):214-221. (In Russ.) https://doi.org/10.46973/0201-727X_2025_3_214
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