THE GRINDING MECHANISM ON A KNIFE CENTRIFUGAL GRINDING MACHINE
UDC 676.024.61
Abstract
The article presents a methodology for calculating the force effect on a fibrous suspension of working bodies in a centrifugal grinding apparatus. The aim of the research is to calculate the force per tooth of an inertial body at different speeds of rotation of the rotor, to determine the effect of the circumferential speed of movement of inertial bodies on the grinding process of fibrous semi-finished products. The article discusses the mechanism of grinding on a centrifugal knife grinding apparatus, determines the tangential shear forces at the contact of the grinding satellite knives with the grinding bowl knives, determines the effect on the fiber of rolling friction forces and sliding friction forces when the grinding satellite knives come into contact with the grinding bowl knives, as well as the effect of specific pressure at the point of contact of the satellite knives with the grinding bowl knives under the influence of inertial forces. Based on the research results, it is scientifically substantiated that the forces arising at the minimum of the considered values of the rotation speed of inertial bodies are sufficient to break the fiber when using this installation for grinding fibrous semi-finished products. An increase in the speed of rotation of the satellites causes a positive change in the physical and mechanical characteristics of the finished castings.
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Zhang D., Zhang A., Xue L. Wood Sci Technol., 2015, vol. 49, pp 661–679. DOI: 10.1007/s00226-015-0728-6.
Mcdonald D., Tchepel M., Ouellet D., Wild P., Jeffrey D., Provan J. J –FOR, 2014, vol. 4(5), pp. 23–30.
Vikharev S. IOP Conf. Series: Earth and Environmental Science, 2019, P. 316.
Ferritsius O., Ferritsius R., Rundlof M. Nord. Pulp Pap. Res. J., 2018, vol. 33, no. 3, pp. 468–481. DOI: 10.1515/npprj-2018-3058.
Patent 2314381 (RU). 2009. (in Russ.).
Voronin I.A., Diratsuyan A.A., Alashkevich YU.D. Lesnoy vestnik, 2010, no. 6, pp. 156–159. (in Russ.).
Alashkevich YU.D., Voronin I.A. Razmol voloknistykh polufabrikatov s ispol'zovaniyem inertsionnykh tel. Tsellyuloz-no-bumazhnoye proizvodstvo. [Grinding of fibrous semi-finished products using inertial bodies. Pulp and paper pro-duction]. LAP LAMBERT Academic Publishing, 2012. 136 p. (in Russ.).
Voronin I.A. IOP Conference Series: Materials Science and Engineering, 2019, vol. 467, issue 1, pp. 86. DOI: 10.1088/1757-899X/467/1/012003.
Smith S. Die rationelle Theorie das Ganzzeughollandar. Otto Ernst Verlag. Teil I. Berlin, 1922. (in German).
Benthien J.,Bähnisch C., Heldner S., Ohlmeyer M. Wood and fiber science, 2014, vol. 46, no. 2, pp. 175–185.
Ihnát V., Lübke H., Russ A., BorůvkaV. Wood research, 2017, vol. 62, no. 1, pp. 45–56.
Alashkevich YU.D., Voronin I.A. Problemy mekhaniki tsellyulozno-bumazhnykh materialov: IV mezhdunarodnaya nauchno-tekhnicheskaya konferentsiya, posvyashchennaya pamyati professora V.I. Komarova. [Problems of the me-chanics of pulp and paper materials: IV international scientific and technical conference dedicated to the memory of Pro-fessor V.I. Komarov]. Arkhangelsk, 2017, pp. 159–164. (in Russ.).
Nabiyeva A.A. Otsenka vliyaniya i sovershenstvovaniya tekhnologicheskikh parametrov nozhevykh razmalyvayush-chikh mashin : dissertatsiya kandidata tekhnicheskikh nauk. [Assessment of the influence and improvement of techno-logical parameters of knife grinding machines: dissertation of the candidate of technical sciences]. Krasnoyarsk, 2004. 156 p. (in Russ.).
Alashkevich YU.D., Voronin I.A. Novyye dostizheniya v khimii i khimicheskoy tekhnologii rastitel'nogo syr'ya: Vse-rossiyskaya VI nauchno-prakticheskaya konferentsiya. [New achievements in the chemistry and chemical technology of plant raw materials: All-Russian VI scientific and practical conference]. Barnaul, 2014, pp. 383–385. (in Russ.).
Voronin I.A., Alashkevich YU.D., Reshetova N.S. Novyye dostizheniya v khimii i khimicheskoy tekhnologii ras-titel'nogo syr'ya: Vserossiyskaya VII konferentsiya s mezhdunarodnym uchastiyem. [New Achievements in Chemistry and Chemical Technology of Plant Raw Materials: VII All-Russian Conference with International Participation]. Barna-ul, 2017, pp. 366–368. (in Russ.).
Bordin R., Roux, J.-C., Bloch, J.-F. Appita Journal, 2008, vol. 61, pp. 71–77.
Fernandez F.J., Martinez D.M., Olson J.A. Nord. PulpPap. Res. J., 2018, vol. 33, no. 1, pp. 21–27. DOI: 10.1515/npprj-2018-3006.
Voronin I.A., Alashkevich YU.D., Reshetova N.S. Lesnoy i khimicheskiy kompleks – problemy i resheniya: Vse-rossiyskaya nauchno-prakticheskaya konferentsiya. [Forestry and chemical complex – problems and solutions: All-Russian scientific and practical conference]. Krasnoyarsk, 2012, vol. II, pp. 39–42. (in Russ.).
Alashkevich YU.D., Voronin I.A., Kovalev V.I., Reshetova N.S. Khimiya rastitel'nogo syr'ya, 2009, no. 2, pp. 165– 168. (in Russ.).
Riegler M., Spangl B., Weigl M., Wimmer R., Muller U. Wood Sci. Technol., 2013, vol. 47, pp. 1243–1259.
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