Thiết kế và chế tạo máy nghiền đĩa, sử dụng động cơ 1 KW

Tgp chi Khoa hgc Trudng Dm hgc Cdn Tho Phdn A: Khoa hgc Ty nhien, Cong nghi vd Moi Irudng: 26 (2013): 80-89 Tap chf Khoa hoc Tru'dng Dai hpc Can Thtf website: sj.ctu.edu.vn THri:T KE V A CHE T ^ O M A Y N G H I E N DIA, SU" D U N G D O N G CO K W Truong Van Thio' va Phgm Phi Long^ ' KItoa Cdng nghi, Trudng Dgi hgc Cdn Tha Thong tin chung: Ng^nhgn: 08/01/2013 Ngdy chdp nhgn: 19/06/2013 Title: Designing & making disk mill machine using motor ofl kW Tit khda: Mdy nghien, mdy nghien dia, thiit ke mdy nghien dia Keywords: Mill machine, disk mill machine, disk mill machine design ABSTRACT 7776 authors of College of Technology (Can Tho University — Vietnam) have been designed and made disk mill Ending machme using motor of kW for training Machine has dimension of (650 mm X 320 mm X 1.250 mm), theoretic productivity (Gi) of 69,89 kg/h (dimension materials after milling (d), according to design objective is d = 0.1-^,04 mm) The machine had been run, of paddy (revolution (n) = 1400 revolution per minute (rpm), times of running) realistic productivity of G„ =• 13,09 kg/h (d met the objective), for com (n = 1400 rpm, times) G„ = 50 kg/h (d not met the objective, but fulfilment for feed), for com (rpm = 1400, 4-^5 times) G„ = 17,22 kg/h (d not met the objective), for com (n = 700 rpm, times) G„ = 5,83 kg/h (d met the objective) The machine had been also run with wet materials TOM TAT Tdc gid cua Khoa Cong nghe (Trudng Dgi hgc Cdn Tho — Viit Nam) dd tinh todn, thiit ki vd che tgo mdy nghien dia, sir dung dgng ca kW cho phuc vu gidng day Mdy cd kich thudc (650 mm x 320 mm X 1.250 mm), ndng sudt ly thuyet (Gt) la 69,89 kg/h (kich thudc cua sdn phdm nghien (d), theo muc tiiu dgt la d ^ 0,1-^,04 mm) Chgy thie nghiim, vdi lua (sd vdng quay (n)= 1400 vdng/phdt (vong/ph - rpm) ldn chgy), mdy cd ndng sudt thuc te Id G„ = 13,09 kg/h (d dgt yeu cdu), vdi bdp (n = 1400 rpm, ldn chgy) mdy cd G„ = 50 kg/h (d khdng dgt yeu cdu, nhung ddp ung dugc cdc yiu cdu ciia thiic dn gia cdm), vd (4-^ 5) ldn chgy (vdi ciing so vdng quay) mdy cd G„ = 17.22 kg/li (d khong dgt yeu cdu) vdi (n = 700 rpm, ldn chgy) mdycd G„ = 5,83 kg/h (d dgt yeu cdu) Mdy cd thi chgy dugc cd vdi nguyen lieu udt PHAN GlOfI THIEU Theo Vinanet (2011), Viet Nam cd thd manh vd frdng frgt, la mgt frong nhung qu6c oja hing diu ve xuit khiu gao ca phe, hd tidu, hat didu nhung ciy Iam nguydn lieu che bidn TACN^ nhu hip, dau ninh lai rat thidu, phii nhip khiu Hiu h^t gia nhiJng nguydn lieu ndy ddu cao, gia bip trdng frong nude Ien den 160 USD/tan, ndu nhip khiu b i p td My chi 135-^145 USD/tin, ndn chi phi diu vao cda chin nuoi cao ban so vdi khu vyc td 10-^20%, neu so vdi the gidi sd Ien ddn 20^25% Dit nude chung ta hidn cd ndn ndng nghiep dang phat tridn theo hudng Tgp chi Khoa hoc Trudng Dai hgc Cdn Tho Phdn A Khoa hgc Ty nhien Cong nghi vd Moi yudng: 26 (2013): 80-89 hien dai hda nhim diy manh phat trien kinh td nong thdn Nganh chin nudi d nude ta cang phat tridn ldn mgnh dd keotiieonhu ciu TACN danh cho vat nudi cang tang Tuy nhien, ndn cdng nghiep sin xuat thuc an chan nudi khdng dap ung dugc yeu cau din den mdt thucfrgnggia thuc in cho vat nuoi cing tang, Iam tang thdm ganh nang chi phi cho cic nhi chan nudi Dd gdp phin lim giam ganh nang cho nha chan nudi thi hg phai chu ddng vide tim kiem thdc in eho vit nudi Ching ban CO thd ty chd bidn cic logi thdc an hon hgp dan gian tCr ngudn nguydn lidu sin cd tgi dia phuang nhu cac logi hgt tim, cim, ngd Dd lam dugc vide dd ngudi chan nudi ein cac thiet bi phuc vy che bidn thdc in chan nudi, cac thidt bi nghidn la rit quan frpng May nghidn dTa thudng dugc sd dung frong nginh san xuat luang thyc de nghidn bdt vua vi bgt min, may nghidn dTa cd nang suit thap hon mdt vii loai may nghidn bdt khac Tuy nhidn, chung co thd nghien vat Hdu d dang deo quanh, udt ma cac miy nghien khac khdng nghien bing chung Mdt sd nginh cdng nghiep sd dung bon loai miy nghien dTa sau: may co tryc thing dung Iam quay dTa frdn, may co true thing dung lam quay dTa dudi, may cd tryc nim ngang lam quay mdt dia va miy cd tryc nim ngang lim quay ci hai dTa Hidn nay, tgi Viet Nam may nghien dgng dTa phong thi nghidm - san pham thuong mgi cua Cty TNHH Thuin Phit Hung [THUPHAHU Co Ltd], may nghidn dang dta cdng suit nhd cd it trdn thi trudng va phii nhip khiu td cac nude khic nhu Trung Quoc (sin phim thuong mai nhu may nghidn dTa kep (Chenzhong, Shandong - Trung Quoc) (95 -^ 315 kW); va cac loai may nghien dTa loai nhd (sd dung ddng co khoing kW) nhip khau qua dudng tidu ngach), Dai Loan Cic may cd miu ma tuang ddi dep va han che dugc tidng on cung nhu vide phat sinh buifrongluc van hanh, nhung giatiianhhai cao, dung de nghien bpt khd va udt cac Ioai ngu cdc Cac logi cd cdng suit Idn nhu cua Zenith (3 kg/h-^ 13 t/h), hoic cua Lien-xd cu diing de nghidn bgt fre nhu cac logi may nghien dia va Ioai miy nghidn kep (45 -^ 1.600 kW) (Nguyin Van Tan, 2009) Cdng nghd sin xuit TACN^ d Vidt Nam cdn qua thip so vdi nhu ciu thyc td Cic vien nghidn cdu d nude ta chua cd ket qua nghidn cuu nao quy trinh cdng nghe hoan chinh dd cd thd phd bien daifravao sin xuit Vi vay, phin nhidu doanh nghigp phai nhip cdng nghd tu nude ngoai Hau hdt cic nha may ddu cd nhu ciu su dung hd thong thiet bi co cdng suit 20 ^ 40 tln/gid, nhung nhiing mav mdc thidt bj loai nayfrongnude chua san xuat dugc huge doanh nghiep phii nhap khiu td chau Au vdi chi phi rit dit Vi viy, vide "Thidt kd may nghidn dTa, ddng ca kW" de nghidn TACN^ la vd cung can tiiidt cho hd chin nudi nhd, trudc mit li phyc vy giang dgy TINH TOAN THiiT KE Cac Ioai may nghidn ddu nghien nhd vat lieu bing mgt hoic mdt vai tic dyng co hpc Tuy theo kdt ciu cu thd cda cac loai may nghidn ma chia gdm: may nghidn tryc, miy nghidn dTa, may nghidn chiu Ian, may nghidn rang, miy nghien bua, may nghien bi 2.1 Nguyen tic cha xat vd Nguydn tic lam viec chi dung cho nghidn thd, nguydn lieu nghien khdng co diu May lam vide theo nguyen tac cdn ggi la may xay kieu thdt De tang nang nghien eua dia, tang ning van chuyen bdt khdi khe nghidn va tang didu kien thdng gid ngudi ta thudng gia cdng mat dia cac vanh, cac ranh chim cd profin tam giicfrdn2 mat dTa Hinh va Hinh (Nguydn Nhu Nam va Trin Thj Thanh, 2000) Xet trang thii cua cue vgt lieu nira khe nghidn giua mat dTa nghidn Cyc vat Iidu m dang d vi fri gap cua ranh ab cua dTa quay namfrdnva cd eua dia ddng im nam dudi may nghidn dia cd true quay thing ddng Hinh (Nguydn Nhu Nam va Trin Tgp ehi Khoa hgc Tnrdng Dgi hoc Cdn Tho Phdn 4: Khoa hgc Ty nhien, Cong nghi vd Moi Irudng: 26 (2013): 80-89 Thl Thanh, 2000) Ap lyc ciia cac ranh Idn cue v|t lieu m dugc ky hidu la P va Pi, ggi f Ii he sd ma sat cua cue vit lieu fren bd mat dTa thi *^ ~ tgq), vdi la gdc ma sat Dudi tie dung quay cda dia tren, cue vit Iidu se chuydn dich mep dTa dgc theo ranh cd neu a > 2(p (Nguydn Nhu Nam va Trin Thi Thanh, 2000) (frong do, a la gdc tao bdi tidp tuydn cua hai rinh frdn mat hai dTa tgi vi fri cit (ggi li gdc dm hay gdc kep) ^ 1 I 11 B flHI'llill A /y/,y\:f/j^^^yj vA- 'TV^T,^^ B C- J**