식품분말 진동선별기 개선을 위한 구조물 효율 분석

박인순¹, 나은수², 장동순², 백영수²^,^*

Efficiency Analysis of Spiral Structured Twist Screen

In-soon Park¹, En-soo Na², Dong-soon Jang², Youngsoo Paek²^,^*

¹안진테크

²충남대학교 환경공학과

¹ANJIN Tech.

²Department of Environmental Engineering, Chungnam National University

^*Corresponding author: Youngsoo Paek, Department of Environmental Engineering, Chungnam National University, 220 Gung-dong, Yusunggu, Daejon 305-764, Korea, Tel: +82-42-821-6677; Fax: +82-42-822-5610, E-mail : likebach@cnu.ac.kr

ⓒ Copyright 2010 Korean Society for Food Engineering. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Received: Dec 26, 2007; Revised: Feb 16, 2009; Accepted: Feb 19, 2010

Published Online: May 31, 2010

Abatract

In the food process, twist screen is widely used to divide particles on the basis of size. As screen equipped in the twist screen perfoms an important part in the particle size distribution mechanism, the contact area of screen and particles, retention time of particles on the screen, mesh and string thickness of screen and the flow pattern of particles on the screen are major points of the separation efficiency. To improve the separation efficiency, increase the retention time and control the flow pattern of particles, screen frame dam and spiral blockage are installed on the sieve of twist screen ∅ 1200 and ∅ 1500. Twist screen ∅ 1500 with frame dam treated similar separation capacity, 37% higher separation ratio and less non-separated particles of product output 1 than general twist screen. Twist screens with frame dam and spiral blockage showed less treatment capacity, three times higher division ratio and entire separation than general twist screen.

Keywords: twist screen; spiral blockage; food powder; particle separation