Quy trinh cdng nghe chl biln thfte an cho thfty sdn ndi chung vd cho ca cdc loai ndi rieng nhin chung van nhu quy trinh chl biln thfte dn gia sue Id chl biln theo me vd qua cac cdng doan
Trang 1HE TH6NG NGHIDN M!N TRONG DAY CHUYDN CHE BI^N
VA K^T QUA DAT DU'OC
Nguyin Nang Nhu'9'ng, Ph?m Ngpe Tuyen, TrSn Van D^t
Wf n Co di^n Ndng nghidp va Cdng ngh^ Sau thu hoach
Tom tat
Thuc dn cho thuy sdn cd yeu cdu rdt khdt khe ve chdt lugrng, dgc bi?t do dgc thii cho dn dudi nudc vdphdi chi biin theo cdng ngh4 ep dim do vdy dp nho ciia nguyen lieu dua vdo mdy ep dim phdi ndm trong khodng 100-300 pm tiiy logi thdc dn Mat khdc thdnh phdn nguyen lieu dua vdo che bien thirc dn cho thuy sdn tuang ty nhu cdc logi thirc dn chan nudi khdc la tinh chdt ca ly khdng ddng nhdt, nhieu logi nguyen lieu chira nhieu sa Do vgy de nghien dgt dp nhd yeu cdu Id cdng viec khd vd doi hdi chi phi ndng hrang ldn Ket qud nghien cieu dd lua chon duac nguyen ly nghien vd sdng phdn logi de nghien nhd nguyen lieu che bien thirc dn cho thiiy sdn ndng sudt 0,5 -0,6 T/h
Dp nhd sdn phdm phdn tich qua sdng Id 300 pm dgt 94,7%, ddp img du^c yeu cdu cdu cdng nghe chi biin thuc dn cho thuy sdn Chi phi ndng lieang cho he thdn^ thdp (54,1 kW.h/T) chi hdng khodng 50% chi phi ndng luang rieng cho cdng dogn nghiin hai ldn thd vd mfn He thdng ldm viec
dn dfnh, de thao tde, vgn hdnh
Tie khoa: He thong nghien mm, thiec dn thiiy sdn
I OAT VAN De
Do ddc thft cho an dudi nudc vd phdi cd dugc cac lo?i thfte dn cd thl ndi, la limg hodc
chim, do vdy thudng phdi chl biln theo cdng ngh? dp dim vd dl dap ftng dugc yeu cdu k^ thudt,
dp nhd cua nguyen lieu dua vdo may ep dim phdi ndm trong khodng 100 - 300 |im tiiy loai thfte
dn Mdt khdc nguyen lieu dung dl chl biln thfte an cho thiiy sdn vl thdnh phdn ca bdn gidng nhu
thfte dn ehdn nudi thdng thudng, nhun^ vl ty le thi khdc nhau, tuy thupe chftng lo^i thfte an cdri
sdn xudt Do tinh chat ca ly khdng ddng nhdt, nhilu loai nguyen lieu chfta nhilu sa, nen dl
nghiin dat dp nhd yeu cdu la cdng viec khd vd ddi hdi chi phi ndng lugng ldn
Quy trinh cdng nghe chl biln thfte an cho thfty sdn ndi chung vd cho ca cdc loai ndi rieng
nhin chung van nhu quy trinh chl biln thfte dn gia sue Id chl biln theo me vd qua cac cdng doan
chinh: nghiin nhd -* cdn djnh lugng theo ty 1? da dinh -^ phoi trdn -^ ep tao vien -^ cdn ddng
bao sdn phdm hodc can djnh lugng theo ty 1? da dinh -> nghiin nhd ^ phdi trdn -> ep lao vien
- • cdn ddng bao sdn pham Dilu khdc nhau ca bdn cdng nghe sdn chl biln thfte dn cho thfty sdn
vd cho gia sue la yeu cdu ky thudt cy thl d cdc cdng doan nhu dp nghiin nhd, do ddng dlu sau
khi trpn, kich thudc, ty trpng cfta vien vd chdt lugng cua vien, ty 1? bd sung ddu beo v.v Tong
thl yeu cdu ky thudt cua cdc cdng doan trong quy trinh chl biln thfte an cho thfty sdn deu cao
han vd khdt khe ban so vdi yeu cdu trong chl biln thfte an cho gia siic
Hien d Viet Nam nhu cau thfte dn cho thuy sdn rat Idm va ngdy mpt tdng nhung vl cdng
nghe vd thilt bi chua dugc nghien cftu mdt cdch bdi bdn, nhat Id d quy md vfta vd nhd Do vdy
thilt kl, chl tao dugc d trong nudc he thong nghiin mjn nang suat 0,5 - (),6 tdn/gid dung trong
day chuyin chl biln thuc dn cho thuy san, dam bdo dp nhd, dam bdo chdt lugng, phft hgp vdi
dieu kien sdn xudt o Viet Nam Id cdp thilt
Trang 2II NOI DUNG VA PHU'aNG PHAP NGHIEN CU'U
2.1 Noi dung nghien cu'u
1 Dieu tra, khdo sdt thuc trang va yeu cdu ddi vdi thfte an cho thfty san ndi chung vd cho
cd ndi rieng hien dang sft dyng trong san xudt, ldm ca sd cho viec chgn cdng ngh? vd thilt bj;
2 Tim hieu, khdo sat cdng nghe va thiet hi nghien mia dung trong cdc day chuyen che biln thfte an cho thuy san tren the gidi, nhdt Id cdc day chuyen hien dang sft dyng d Viet Nam lam co
sd cho viec chpn nguyen ly, ket cau cdc mdy trong he thdng nghien min nghien cftu;
3 Lya chpn nguyen ly, ket cau cho cdc may chinh trong he thdng gdm: mdy nghien min;
he thdng hut, van chuyen vd tdch Ipc san phdm nghien; sang phdn loai sdn pham;
4 Thiet ke, che tao he thdng thiet bi tren;
5 Thft nghiem, danh gia kha ndng Idm viec cfta cdc mdu may nghien cftu vd loan bd he thong
2.2 Phu'O'ng phap nghien CLPU
Trong nghien cftu da sft dyng cdc phuomg phdp sau:
- Phuomg phdp dieu tra, khao sat vd xft Iy thdng tin thu dugc;
- Phuomg phdp chuyen gia dk lua chpn nguyen ly, kit cdu cdc may, nhdt Id sang phdn loai;
- Phuomg phap thi nghiem:
+ Phuomg phdp do cdng sudt khdng tdi va cd tdi cua cdc thilt hi chinh bdng thilt hi do cdng sudt chuyen dyng;
+ Phuomg phap do, xdc dinh nang sudt cua cac may: nghiin, sang phdn loai;
+ Phuomg phdp ddnh gia chat lugng bdt sau nghiin va sau phdn loai;
+ Cdc phuang phdp xft Iy sd lieu thi nghiem thu dugc
III K^T QUA vA T H A O L U A N
3.1 Lira chon nguyen ly he thdng
Tren ca sd tim hilu, khao sat cdng ngh? vd he thdng thilt bi nghiin niin dftng trong cac day chuyen che bien thfte an cho thuy sdn tren thl gidi vd d Viet Nam, da lua chpn dugc nguyen
Iy, ket cdu cac mdy trong he thong nghiin min nghien cftu (hinh 1)
Hinh 1 Sa d6 quy trinh cong ngh# nghign mjn d l xult nghign ci>u
1 - Giu tai cap li#u; 2 - Thiing chu-a tren nghign; 3 - Co c l u d p li^u vao mSy nghiin; 4 - Mdy nghiin bua;
5 - Qugt hut; 6 - Thiet bj IQC bpt tay ao; 7 - Sang phan logi; 8 - Hg thong due^ng 6ng; 9 - Mdy n6n khi
108
Trang 3Qiiy trinh nghiin min Id chu trinh kin nghiin nhd kit hgp vdi sang phdn loai Hat nhd dat
tieu chuan dua sang cdng doan tilp theo, hat to dua quay trd lai may nghiin dk lam nhd tilp
Ldy, van chuyen sdn phdm sau nghiin dua len sdng bdng he thdng gid dp lyc cao kit hgp vdi giu bui ty ddng Dp nhd sdn phdm hieu chinh thdng qua mdt sdng phdn loai rieng biet ben ngodi may nghien bdng each thay cdc ludi sdng phu hgp
3.2 Cc SO" khoa hoc lya chpn cac thong s6 chinh cho cac may
3.2.1 May nghiin
Nguyen lieu dua vdo nghiin trong eac ddy truyin chl biln thfte an chan nudi (TACN) ndi chung vd thfte an cho thfty sdn ndi rieng d Viet Nam chft ylu Id ngd, khd ddu ddu tuomg chill ly, khd ddu lac, sdn lat khd_, bdt cd, xuomg ddng vdl, mudi an ndi chimg phdn ldn la loai gidn, de nghien, do vdy de cd mau may nghien ldm viec hieu qud cdn tang tdi mftc ldi da cd thl dugc gde
dm cfta sang dl tang khd nang thodt cho nguyen lieu khi da dat du dp nhd cdn thilt, ddng thai cd gidi phdp gidm van tde luu chuyen cfta ldp nguyen lieu trong budng nghiin Ddp ftng dugc cdc yeu cdu tren la may nghien cd budng nghiin dang hinh gipt nudc Tuy nhien d ddy cdn phdi nghiin min do vdy phdi tinh loan lua chpn van ldc ddu bfta, khe hd gifta bfta vd sdng vd tinh kiim tra cdn bdng lai cho bua nghiin cftng roto nghiin, ddm bao cho may nghiin ldm viec dat hieu sudt cao
v l nang sudt cfta mdy nghiin, de bdo ddm ndng sudt trung binh cfta he thdng Id 0,5 - 0,6 tdn/h, nang sudt Iy thuyit cfta mdy nghiin phdi dat 0,8 - 0,9 tan/h vi day Id nang sudt thudn tuy
vd phdi nghien di nghien lai
a Van tde ddu bua
Van tde bua thudng dugc xdc dinh bdng thyc nghiem, tinh loan nhung ket qud chu yeu Id
de tham khdo Thdng thudng van tde dau bua ciia may nghien TACN Id 65-75 m/s Ngdy nay vdi cdng nghe che tao ngay mdt hodn thien, nhieu mdy nghien da dat van ldc ddu bua
100 - 115 m/s [4; 9] Neu chi nhin tft hieu qud dap thi van tde biia cdng cao, hieu qud dap cdng ldn vd thdi gian nguyen lieu nam trong budng nghien cdng nhd Nhumg chpn van ldc ddu bua phii hgp, can quan tdm den nhieu yeu td, trong dd cd yeu td chi phi nang lupmg Ta biet rdng ldng van tde dau bfta dong nghia vdi viec tang chi phi ndng lupmg chay khdng tdi len ba ldn Vi dy khi tdng van tde ddu bfta tft 55 len 115 m/s, chi phi ndng lupmg cho qud trinh nghien gidm 21%, mftc
dp nghidn tang 110% vd cdng sudt chay khdng tdi ldng 75% [9] Ngodi ra khi tdng ldc dp cfta roto nghiin can ddc biet chu y din cdn bdng ddng cho roto dl gidm dp rung cho mdy Tren ca sd cdc phdn tich tren vd tham khdo cdc may nghien cfta nudc ngodi chpn van ldc ddu bfta 85 m/s cho mau mdy nghien cftu vfta bao dam hieu sudt nghien, vfta phft hgp vdi khd ndng che tao d trong nudc
b Kich thu&c roto
- Dudng kinh roto
r ^30V
D = 2 (1)
7i.n
Trong do: D - Dudng kinh roto, m;
V - Van tde ddu biia, m/s;
n - Toe do quay cfta roto, v/ph
Vi roto nhdn chuyin ddng true tilp tft ddng ca dien cd ldc dp quay 2960 v/ph Thay cac gid tri vdo (1) tinh dugc D = 0,5487 mm Chpn D = 550nim
- B I rpng roto nghiin
Ndng sudt may nghien cd the tich theo cdng thfte thuc nghiem sau [9]
Trang 4Q = (2-8)10^p.D^Bco
Trong dd:Q- Nang sudt may nghiin, kg/s;
B - B I rdng roto, m;
CO - Van ldc quay, rad/s;
p - Khdi lugng rieng nguyen lieu nghien, kg/m Tft (3.2) ta cd bl rdng roto:
(2)
(3)
(2H-8).yO.D'.fi>
May cd nang suat cang ldn chpn he sd (2j8) cdng cao Doi vdi may nang suat 0,8 - 0,9
tdn/h (vdi sang Io 0,8 mm) tftc Q = 0,236 kg/s, bl rdng roto Id:
10'.0,236
2.500.(0,55)^309,8
Dl phft hgp vdi cac ddng may nghiin hien dang sft dyng phd biln trong san xudt chpn:
B = 270 mm
c Chpn kich thu&c bua nghiin vd bdn kinh chdt treo bua
Bfta nghiin duac treo vdo dia roto thdng qua khdp ban ll Trong qud trinh lam viec, dudi
tac dyng cfta luc ly tam, luc va dap, bfta ludn cd xu thl lech di vd quay trd lai vi tri can bdng
Hinh 2 la sa db Iam viec vd cdc sung luc tac ddng len bfta trong qua trinh nghien
Jc
/ "
L ^ P""
c
r^ _-:_
vl/
a/2
1
a
Hinh 2 So dd lam viec cua bua trong budng nghign
NIU thod man dilu kien [1; 4; 6; 9]:
/^ = c.l (4) Trong do: p Id bdn kinh qudn tinh cfta bua ddi vdi chot treo;
c - Khodng each tft chdt treo din trpng tdm bua;
/ - Khoang each tft chdt treo den ddu va dap cfta bua
Thi bfta dugc coi la can bdng trong qua trinh dap Tftc sung luc tft bua khdng chuyen vao
din true va d bi
Bd qua dien tich Id, vdi bfta hinh chft nhdt chieu ddi la a, chieu rdng la b, ta cd:
PI a'+b'
110
Trang 5Trong dd po - Bdn kinh quan tinh vdi frpng tdm bua
Matkhactacd[4]:
= pQ+c- =
Ndu va dap xdy ra d ddu bfta
l = c + —
2
Thay (6), (7) vdo (4) ta cd:
a^+b^ 2
+ c
12 Sau khi nit gpn cd:
a +b
c =
= c ( « c + —
I 2
p =p^+c'=— - + c' (6)
(7)
6a
Nhu vdy de bao ddm can bang trong qua trinh lam viec, cdc kich thudc cfta bua phdi thod
man dieu kien (8) Thuc te dl bdo dam che dp ldm viec dn dinh cho mdy nghiin, kich thudc cfta
bfta cdn dugc chpn phft hgp vdi dudmg kinh roto nghiin
Ngoai dieu kien (8), roto va bfta nghien dugc coi Id cdn bdng ddng lyc hpc neu thod man
dilu kidn [4; 6; 9]:
Hay / = 0,154 D (10)
Vi da chpn D = 550 mm, vdy kich thudc cua bfta (hinh 2) Id:
/ =0,154x550 =84,7 mm Chpn a =120,b = 50
1 2 0 ' + 5 0 ' ^^ ,^
Vdv c = = 23,47mm
•^ 6.120
Lam trdn so, kich thudc cua bfta Id: a = 120 mm
b = 50 mm / = 85 mm
c = 25 mm Bdn kinh chdt treo bfta: Tft (10) sau khi thay D = 2(Rt +1) vd rut gpn ta cd:
RT = 2,251 = 2,25 x 85 = 191,25 mm Lam trdn sd: Rt =190 mm
d Cdng sudt tiiu thu
D I xdc dinh cdng suat lieu thy cho mau mdy nghiin nghien cftu
Cdng suat tieu thy cfta may nghiin dugc tinh theo cdng thfte:
N = Nngh+NLC + NKT (11)
Trong do: Nngh - Cdng suit tieu thy cho qud trinh lam nhd nguyen lieu nghiin, W;
NLC - Cdng suat tieu hao lam luu chuyin khdi nguyen lieu frong budng nghiin, W;
NKT - Cong sudt chay khdng tdi, W
Trang 6Cdng sudt tieu thy cho qua trinh ldm nhd nguyen lieu [6; 9]:
da Qv^ N„„h = -^(o — = —— (12)
"'" dt \-f
Trong do:] - Mdmen quan tinh cfta roto, kg.m ;
CO-Van tde gde, s~';
Q - Ndng sudt may, kg/s;
V - Van tde ddu bfta;
f - He sd trd sdt, f = 0,8 - 0,9 ftng vdi van tde ddu bua 8 0 - 1 0 0 m/s [9]
Thay cac gid tri vdo ta cd:
Doi vdi may nang sudt 0,8 - 0,9 tdn/h
0,236.85'
^"«"~ (1-0,8) = 17.051 PT Thdng thudng cdng sudt tieu thy cho viec lam lim chuyin khoi nguyen lieu trong budng nghiin vd chay khdng tdi bdng 15 - 20% cdng sudt Iam nhd nguyen lieu, vdy cdng suat cho may nghien la:
N = (1,15-1,2) Nngh Cdng sudt cdn thilt cho mdy nghien min Id:
N = l,2x 17.051 =20.461 W Chpn ddng ca dien cdng sudt 22 kW, n = 2960 v/ph, dien dp 380 - 660 V
3.2.2 He th6ng hiit va loc tach bot nghiin
Tren ca sd phucmg dn bo tri may mdc thilt bi, tinh loan trd luc, ton thdt dp suat dd lua chon dugc quat hftt, dudng kinh dng vd thilt bi Igc tdch bdt phu hgp, cy the:
- Dudmg kinh dng d = 150 mm;
- Quat hut CF8 - 18 N°5,5; luu lugng Q = 2.000 - 2.500 m^/h, cdt dp P = 650 - 600 mm H2O vd cdng sudt ddng ca dien N = 7,5 kW;
- Thilt bi lpc tach bdt dang tfti vdi: 21 tui vdi tdng dien tich tfti lpc Id 12,86 m^
3.2.3 Lu-a chon sang phan loai
Bang 1 Thong sd ky thuat cua miu sang phan loai bpt nghien ciru
TT
1
2
3
4
5
6
7
8
9
Dac tinh ky thuat
Du-cyng kinh trong sang
Chieu dai trong sang
Toe do quay trge ban chai
So hang ban chai
Cong suat trge ban chai
Toe dp quay trong sang
Kieh thu-ac 16 \ir&\ sang
Cong suat quay trdng sang
Dign tich lu'di sSng
Don vj do
mm
mm v/ph hang
kW v/ph
(im
kW
M I U sang nghign cCru
600
2 x 8 0 0 = 1.600 30; 40; 50
4 0,75 10; 12,5; 15 200; 500; 800 0,75
2 x 1 , 5 = 3m^
112
Trang 7Trong dieu kien Viet Nam dl phdn loai tdt, bdt min sau nghiin nen dimg sang dang trong ludi quay, ben trong cd ban chdi quay vfta cd tac dung quel, ddy nguyen lieu qua ludi sang, vfta lam sach ludi sang la cd tinh kha thi nhat Tren ca sd khich thudc sang Turbo sifter cua hang Stloz - Phap, da chpn cdc thdng sd cho mau sdng phan loai bdt nghien nghien cftu nhu bang 1 dl thiet ke, che lao
3.3 K§t qua khao nghiem
3.3.L Kit qua thi nghiem co tai cac thiet hi don le
Thi nghiem cd lai cua lung may va ca he thdng dugc thuc hien vdi hon hgp nguyen lieu vdi ly le nhu sau:
- Ngd hat: 45,5%
- Khd dau Inch Iy: 45,5%
- San khd dap nhd sa bd: 9,0%
r ^
a Kit qua tliingliiem cd tdi mdy nghiin min
Vdi nguyen lieu Ihi nghiem jieu tren va ludi sang nghiin Id <D0,8 mm, kit qua Ihi nghiem danh gia kha nang Iam viec cua mau may nghiin min nghien cftu neu lai bang 2
Bang 2 K i t qua thi nghifm co tai may nghiin mjn
TT
1
2
3
TB
T i n s6 vit
tai (Hz)
20-21
2 0 - 2 1
2 0 - 2 1
Cong s u i t (kW)
19 - 2 0
1 9 - 2 0
1 9 - 2 0 19,5
K h i i lu'p'ng
me nghiin (kg)
44
44
44
44
Thdi gian nghiin (ph)
5 4,8 5,3 5,03
Ndng
s u i t (kg/h)
528
550
498 525,3
Chi phi
NL rigng (kWh/T) 36,9 35,5 39,2 37,2
Dp nho bpt nghiin (% Ipt qua sang TN)
250 ^m
75
77
74 75,3
300 ^m
86
88
85 86,3
Kel qua thi nghiem cho thay vdi cdng sudt ddng co 22 kW, ndng sudt trung binh cua may dat 525 kg/h, chi phi nang lugng rieng 37,2 kW.h/T, dp nhd bdt nghien dat 75,3% qua ludi sang Ihi nghiem 250 ).im va 86,3% qua ludi sang thi nghiem 300 j^m
b Ket qua thi nghiim cd tdi may sdng phdn loai
Vdi bdi da nghien min, da tiln hanh nghien cftu danh gia khd nang lam viec cua sang phan loai vdi ba loai ludi sang Io 0,2 mm; 0,5 mm va 0,8 mm Kit qua thi nghiem thu dugc neu tai bang 3
Ket qua thi nghiem bang 3 cho thay:
- Khi diing ludi sang Io 0,2 mm, ndng suat sang phan loai dat 174,5 kg/h va dp nhd bdt san phdm sau sang dat < 200 |Am 6 ludi sang nay ly le hdi ve may nghien de nghien lai cao 63,6 -68,2%
- Khi diing ludi sang Io 0,5 mm, nang sual sang phan loai dat 535 kg/h va dp nhd bdi san
phdm sau sdng dat 79% qua sang phdn lich 250 ^m vd 94,5% qua sdng phdn tich 300 jam 6 ludi
sang ndy ty le hoi vl may nghiin dl nghiin lai thdp, khoang 7 - 8%
- Khi diing ludi sang Io 0,8 mm, nang suat sang phan loai dat 637,5 kg/h vd dp nhd bdt san phdm sau sang dat 69% qua sang phan lich 250 |.im va 88,5% qua sang phan lich 300 jam CJ ludi sang nay ty 1? hdi vl may nghiin dl nghiin lai rdt thdp, khoang 2 - 5%
Trang 8Bang 3 Kit qua thi nghifm cd tai sang phan lo^i
TT
1
1
2
3
II
1
2
III
1
2
Nguygn l i f u bpt
thi nghifm
Tde dp
trdng sang
Tde dp ban
chai (v/ph)
Khdi lu'p'ng bpt thi nghifm (kg)
Khdi lu'p'ng bpt qua
sang
(kg/%)
Ndng
suat (Kg/h)
Cdng suit tieu thg (kW) Trdng sang
Ban chai
Dp nho bpt (% Ipt qua sang PT)
250
^m
300
(im
Lu'di sang Id 0,2 mm (200 urn) Bpt da
H5n hpp-TNl
Hdn hpp-TN2
TBTN1+TN2
10
10
10
30
30
40
50
44
44
44
50/100 14/31,8 16/36,4 15/34,1
642
168
181 174,5
0,44 0,45 0,45
0.45
0,62 0,58 0,60 0,59
100
100
100
100
100
100
100
100 Ludi sang Id 0,5 mm (500 urn)
Hon hpp-TNl
Hon hop-TN2
TB
10
10
30
-40
44
44
44
41/93 40/91 40,5/92
525
545
535
0,47 0,46 0,47
0,59 0,63 0,61
78
80
79
94
95 94,5 Lu'di sang Io 0,8 mm (800 nm)
Hdn hp'p-TN'i
Hon ho'p-TN2
TB
10
10
30
40
44
44
44
42/95 43/98 42,5/96,5
640
635 637,5
0,47 0.46 0,46
0,58 0,61 0,59
68
70
69
88
89 88,5
Tft ket qua thu dugc thdy vdi nguyen ly, ket cdu sdng phan loai da chgn, dftng ludi sang 16 0,5 mm de phan bdt sau nghien Id dap ftng dugc yeu cdu dat ra cua de tdi, cy the dp nhd bdt san phdm sau sang dai 94,5% qua sang phan tich 300 jam, nang suat dat 535 kg/h
3.3.2 Ket qua thi nghiem co tai toan he thong
Vdi che dp Iam viec cua may nghien min va sang phdn loai vdi ludi sdng 0,5 mm da lua chpn, da lien hanh thi nghiem cd tai todn he thdng Ket qua thi nghiem thu dugc neu tai bang 4
Bang 4 Kit qua thi nghifm toan hf thdng
TT
1
2
3
TB
K lu'O'ng
me thi
nghifm
(kg)
44
88
88
-Thd'i gian (ph)
5,5
10 9,8
-Nang
s u i t bdt san
p h i m (kg/h)
480
528
539 515,6
Cdng suit nghiin
(kW)
1 9 - 2 0
1 9 - 2 0
1 9 - 2 0 19,5
Cdng s u i t sang p.loai (kW)
Trdng
sang
0,48 0,46 0,46 0,46
Ban chai
0,60 0,58 0,59 0.59
Cdng
s u i t
quat
va Ipc tach bpt (kW)
5.9+1,1 6,2+1,1
6,5+1,1
7.3
Chi phi
NL rieng (kWh/T
57.5 52,7 52,2
54,1
Dp nho bpt nghiin (% Ipt qua sdng TN)
250^m
79
81
81 80,3
300|im
94
95
95
94.7
114
Trang 9Kit qud thi nghiem bang 6 cho thdy he thdng dat ndng sudt trung binh 515,6 kg/h, dp nhd
san phdm 80,3% qua sdng phan tich 250 |xm vd 94,7% qua sang phdn tich 300 jam, ca ban dap ftng dugc yeu cdu dat ra đp ftng dugc yeu cdu cdng nghe chl biln thfte dn cho thfty san Chi phi
nang lugng cho he thdng nghien min theo nguyen ly lua chpn cua dk tdi khoang 54,1 kW.h/T, chi
bing khodng 50% chi phi nang lugng rieng cho cdng doan nghiin min theo cdng nghe nghien hai cap: nghien thd va nghien min
Ket qua khdo nghiem cho thdy cac may trong he thdng lam viec dn dinh, de thao ldc, van
hanh Ndng sudt va do nhd cfta bdt ca bdn đp ftng dugc yeu cdu đt rạ
K^T LUAN
1 Da lya chgn dugc nguyen ly he thdng nghien min dftng trong day chuyen che bien thfte
an cho thuy sdn nang sudt 0,5 tdn/h phft hgp vdi dieu kien san sudt va kha nang chl tao d Viet Nam
2 Ket qua khao nghiem cho thdy: nang sudt he thdng dat 515,6 kg/h, dp nhd sdn phdm dat
94,7% qua sang phan tich 300 jam, ca ban dap ftng dugc yeu cau cdu cdng nghe che bien thfte dn
cho thfty sdn Chi phi nang lugng cho he thdng nghiin min thdp 54,1 kW.h/T, chi bdng khodng 50% chi phi ndng lupmg rieng cho cdng doan nghiin hai Idn thd vd min
3 He thdng lam viec dn dinh, de thao ldc, van hdnh Gia thanh thiet bi thap, phu hgp vdi khd ndng dau tu cfta cdc ca sd nudi trdng thuy sdn quy md nhd va vfta d Viet Nam
TAI LIEU THAM KHAO
1 Nguyen Ndng Nhuang vd Cong sụ Gop phan timg buoc hoan thien quy trinh san xuat va nang cao hieu
qud day chuyen che bien thudc an gia sue quy mo 2 va 3 tan/gid Bao cao khoa hoc, 2000
2 Nguyen Ndng Nhuang vd Cong sụ Nghien cuu thiet ke, che tao cac thiet bj tur dpng hoa che bien nong
san - Bao cao tong ket KHKT de tai cap Nha nudc ma s6 KC.03.03, 2005
3 Nguyen Ndng Nhuang vd Cong sir Nghien cuu thiet ke, che tao va chuyen giao vao san xuat he thong
thilt bj van chuyen hat rdi vao khau nhap, xuat thdc trong kho du triJ qudc giạ Bao cao ting ket KHKT ditai, HaNpi, 2004
4 AjieiuKUH B P; Pou(un Ụ M MexaHHsauHJi )KHB0TH0B0ACTBạ MocKsa, "ArponpoMHSAar", 1975
5 Feopeuee M.Jl u dp MexaHHsauHS a a<nBOTHOB'bACTBOTỌ COCJJHJI, "SeMHSflar", 1978
6 Feopeuee H.Jlu dp MauiHHH B JKHBOTHOBTJACTBOTỌ CO(|)HJI, "3eMH3;iaT", 1986
7 HeaHHeuKO 0 K u dp PacweTbi rpyaonốbeMHbix H xpaHcnopTHpyiomHx MauiHH KHCB, "Brnua
uiKOJia", 1978
8 KpacHUKoe B B IToÁbeMHO - TpaHcnopTHb;e MamHHbị MocKBa, "Kojioc", 1981
9 MejibHUKoe C B MexaHHsauHJi, aBTOMaxHsauHJi JKHBOTHOBOAMCCKHX (jjepM JleHHHPpaA, "KOJTOC",
1978
10 Robert R McEllhineỵ Feed manufacturing technoloy IV American Feed Industry Association, Inc
1994
11 Catalogue of the Stolz - Francẹ