(Полтавська державна аграрна академія, 2017) Шкоп, Андрей Александрович; Цейтлин, Моисей Абрамович; Шестопалов, Алексей Валерьевич; Райко, Валентина Федоровна
The ways to reduce the mechanical influence on flocculed aggregates of polydisperse sludge at its dewatering in the centrifuges are studied. It is determined that by changing the design of the feed pipe and the conditions of slurry supply in the centrifuge can be reduced hydromechanical effect on sludge floccules, providing their minimum destruction. It is proposed to install the guide channels along the side surface of the feed pipe so that the direction of slurry flow from the channels coincides with the direction of rotor rotation. Pulp flows along a tangent to the drum surface and only a small part of the flow experiences shear stresses. Installation of booster sleeve with guide pipes, preventing suspension spraying, in the drum allows the slurry to flow down smoothly directly on the surface of the rotor bath depth. It is found that such improvement of centrifuge design increases the efficiency of treatment of flocculed sludge to 99 % and reduces the entrainment of solids with centrate by minimizing destruction of floccules.
