KHOA HOC CbNG N G H l
IMGHIEIM CIJU T H I E T K E CHE T A O T H I E T Bi V A CdlMG IMGHE TROIM 5AIM PHAIVI IMHIEU CALI TLT TREIM
IVIAY TROIM L A P PHUOIMG THLIIMG Q U A Y
Tdn Th^t Minh\ Ngd Kidn Cudng^
T6M TAT
Nghien cuu dd tai "Nghidn cuu, thidt kd ehd tao thiet bj va cong ngh^ trpn san phim nhi^u ciu tir trfin may trpn lap phuong thiing quay" da thu dupe cac k^t qua sau: Da thi^t k^ ch^ tao dug«c 01 miy trOn lap phuong thimg quay: May boat dong tot khi thay doi c^c thong so ciia may trong qud trinh nghifin cuu. Cdc san pham trpn dat yfiu ciu. Da tim ra dupe m6 hinh bing toan hpc hoi quy cua qui trinh tr^n: Y = 22,68 + 0,93Xi + 1,31X2 "•" 1.68X3. Til phuong trinh n^y trong qua trinh nghifin cuu tim ra dupe ch^ dO trpn toi uu bing phuong phap Box-Wilson vdi bO thdng so: Toe dp quay cua thiing: Xi = 20v/p; Hfi so chua diy ciia thimg trpn: Xj = 35%; Dp nghifing ciia cinh dao:^ = 30°. Vdi ch^ dO n^y thdi gian trOn la 19 phiit d^ dat dp d6ng deu la 100%. May va cdng ngh^ tr^n da dupe chuyen giao cho co sd Scin xuit d^ trpn thuoc tAn dupe va dupe CO sd danh gia cao. May c6 th^ trpn dupe nhi^u lo^ h^t vat li^u kh6 rdi khac nhau.
Tu kh6a: May trdn l$p phuong, thimg quay, md hinh toin.
I. BAT VAN BE
Cdng doan trdn ddng vai trd quan trpng trong day chuyen sin xuat bin san pham hoac sin pham, thudc tan dupe. Muc dich cua trdn la lam phan bd ddng deu cic thinh phan chat trong mdt don vi the tich bat ky ciia sin pham (hoac ban san pham).
Trong sin xuat trdn sin pham duoc thuc hien tren nhieu loai miy va thiet bi khac nhau dd san xuat cac loai sin pham khac nhau nhir. Idng, khd rdi, nhao.
Do vay viec nghidn cuu cdng nghe trdn ddi hdi phai cd su phan tich cu thd, rd ring va chinh xac ve tiiiet bi vi cdng nghd thi mdi mang lai hidu qua cao.
Nghien cuu thiet kd, che tao thiet bi va cdng nghe trdn sin pham nhieu cau tir tren miy trdn lap phuong tilling quay tap trung vao hai ndi dung chinh dd la: nghidn cuu thiet kd ehd tao may ti-pn lap phuong tilling quay va nghidn ciiu tim ehd dp tdi uu nhim tim ra mdt ch^ dp trdn vdi dp d6ng d^u cao va tiidi gian ngin nhat
II. MAY IRON THi NGHIEM
1. Tinh toin thi^t k^ m i y trdn.
May trdn dupe tinh toan lay sd lidu cho thidt k^
ehd tao. Cac thdng sd da dupe tinh toan nhu sau:
Thung trdn lap phuong kich tiiudc D x R x C = 600 x600 x600mm.
' D?i hpc Bach khoa Ha Npi
^ Cong ty TNHH Hai Ha Kotobuki
Tdc dp quay ciia thiing 15-20-25 v/p.
- Ddng co: N = 3kW, n = 2880 v/p.
Bd truydn ddng: Ddng co - Hop giam tdc - Bd tinyen xich - True tilling ti-pn quay.
Vat Ueu thimg: Inox.
2. Sau khi cd s6 lidu miy da dupe thi^t k^ v i ch^ tao.
3. So dd nguydn ly c^a miy v i hudng chuyfo ddng ciia hat vat lidu khi thiing trdn quay d^ trdn v|lt lidu (hinh dudi).
Miy trdn loai niy tuong tu miy trdn quay hinh tru. True thimg quay dupe lip cheo. Trdn true cd lip cinh cd dinh hai phia de thay doi hudng chuydn ddng ciia vat lidu khi do xudng phia dudi. Tdc dp vdng quay ciia thiing trdn thay doi khi trdn timg loai vat hdu khic nhau.
Khi trdn thimg quay mang vat lidu Idn d^n mdt gdc nhat dinh, mdt phin vat lidu trupt xudng hai mat bdn edn phan Idn vit lidu edn lai do xudng mat nghidng 30** gap hai cinh trdn lip trfen true quay ra phia ngoii vSt Udu lai bin tung ra hai b€n. Ddn nua vdng quay sau vat Udu dupe do xudng gap hai cinh trdn (cung lip ciing tren true) nghieng 30" quay vio trong v i vat li$u dupe do ddn vio trong.
Nhu vay trong qua trinh trdn hdn hpp cac hat vat lidu chuyen ddng theo mdt quy dao phiic tap: truot theo hai phia thanh thiing hai bdn - do jcuong tung ra
KHOA HQC C 6 N G N G H l
hai phia do xudng thu vio giira tiiung. Qui trinh chuyen ddng nhu vay xay ra li^n tuc vi mSnh liii lim oho bdn hop trdn nhanh chdng ddng ddu.
Hinh. M:iy trim l.ii) phinmg thung qu.iy.
III. VAT LIEU VA PHUONG P H A P NGHIEN CUU.
1. V$t Udu
Loai vat liini khd riri kich tiiuiK nhd [bdt gao).
2. Phuong phip nghidn cuu
- Su dung phuong phip quy hoach thuc nghidm:
Phan ti'ch chpn ddi tupng nghien cuu, cic yeu tii chinh inh hirdng d^n qua trinh trdn; thuc nghiem so bd xic dinh vung anh hudng (cac cin trdn, dudi ciia vimg tdi uu); tien hinh thi nghidm theo ma trin quy
hogch thuc ngliii-iii 2'' ydu td trdn may trdn da ch^
tao. Liy miu tluo thcri gian nhat dinh. Thi nghidm dimg lai khi do ddng ddu dat 100%; xay dung mo I linh toin hpc, phucmg trinh hdi quy; tim che dp I dng ngh<^ lion tdi uu theo phuong phap Box-Wilson.
Tim ham muc tii'u ciia qua trinh.
Muc tiiMi lii.i qii;i trinh la:
Di) ddng d(u cua san pham - Khdi lupng tron km nhit cd thc^ - 'Ihiri gian tron ngin nhat.
IV. THUC NGHIEM - X A Y DUNG PHUONG TMNH HOI QUY TJM TdilUU
1. Thi nghidm qui trinh trdn.
TNI TN2 TN3 TN4 TN5 TN6 TN7 TN8 TN9
n,-ip,-Ci n,-ip,-C^
n,-ip,-C,
Hi - 9 2 - ^ 2
n_,-cp,-C, Uv-cpi-C, n, - ip, - C, n, - cp2 - Cv lo - 9o - Co
( 1 5 - 2 5 - 3 0 0 (1.5-25-30") (15 - 45 - 30') (15-45-30") (15-25-30') (15-25-30") (15-45-30*) (15-45-30") (15-35-30«)
TN
1 2 3 4 5 6 7 8 9
Thdi gian lay mau
(phut) 3 3 3 3 3 3 3 3 3
Bangl. Kdt qua cic thi nghidm Oiy gii tin trung binh) Cap thdng sd timg thi nghidm
(n, (p, C)
n (v/p) (PC%) C(dd) (t,g,n) ni-cpi-Ci
15 25 30'
n,-(p,-C2
15 25 30"
ni-cp2-C,
15 45 30'
ni-(p2-C2
15 45 30"
n2 - (pi - Ci
25 25 30'
n2 - (p, - C2
25 25 30"
nz - (p2 - C,
25 45 30'
n2 - (p2 - C2
25 45 30"
no-(Po-Co
20 35 30«
Dp ddng deu (%)
99 98 98 99 100 100 99 99 100
Thdi gian trdn (ph) Lin 1. y.
27 24 21 27 21 21 24 21 19
Then gian trdn (ph) Lin 2. yo
24
Thcri gian tipn (ph) Trung binh y
25.5 21 ^ 22,5 24
24 21 18 24 18 19
24 25,5
21 19,5
24 19,5
19
46 NONG NGHIEP VA PHAT TRIEN NONG THON - KY 1 - THANG 1/2012
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Bing thuc nghidm so bd x i c dinh dupe miirc anh hudng ciia 3 yeu td den q u i trinh trdn li:
-I- Tdc dp quay cua thung (vg/ph): ni = 15 v/p ; no = 20 v/p ; n2 = 25 v/p.
-I- He sd chiia day (%): ipj = 25% ; cpo = 35% ; ip2 = 45%.
+ Cinh ti-dn (gdc nghidng): Ci = 30'; Co = 30^ ; C2 = 30".
CFrdn true gin 4 cinh cd dinh mdi bdn 2 cinh doi xiing nhau.
Ky hidu: Cj = 30' - tat ca 4 cinh ddu nghidng 30" vio trong.
- C2 = 30" - tat c i 4 cinh deu nghidng 30" hudng ra ngoii.
Co = 30« - 2 cinh phia bdn niy nghidng 30"
hudng ra ngoii, 2 cinh phia ddi didn nghidng vio tiong)
Tien hinh thi nghidm theo ma tran quy hoach thuc nghidm sd thi nghidm 2^ yeu td. Cic thdng sd cua thi nghidm nghidn cuu nhu sau: (tong sd thi nghidm mdt lin l i 8 cdng mdt 0 tam l i 9).
De tim che dp trdn thich hpp nhim dat dupe sin pham dat ydu cau ve chat lupng, tidu hao nang lupng thap (thdi gian trdn ngin), trdn co sd didu chinh cic
thdng sd chinh cua q u i trinh, da i p dung phuong phip quy hoach hda toin hpc cic thuc nghidm trong nghidn cim tim tdi uu.
Thi nghidm dupe ti^n hinh vdi cau tir 1 l i 90% v i cau tii 2 li 10%.
2. xay dung phuong trinh hdi quy.
Trong quy hoach toin hpc cic thuc nghidm tim tdi uu, mdi lidn hd thdng so kdt qua y vi cic yeu td tic ddng cd the bi^u didn bing mdt ham: y = f(xi, X2, X3, . . . , x„)
Trong dd: y- kdt q u i q u i trinh m i ta quan tam ; X, - cic y^u td tic ddng ddn qui trinh.
Trong trudng hpp tong quit, phuong trinh hdi quy cd dang sau:
Y = bo + biXi + bgXz + bjXj -1- bi2XiX2 + bijXiXs -1-
b23X2X3 + b 123X1X2X3
Trong dd: Xj, X2, X3- cic yeu td tic ddng d^n q u i trinh,
Xi - sd vdng quay ciia thiing; X2 - he so chira diy;
X3 - vi tri ciia cinh trdn trong thung; bo, bj, b2, b3, bi2, hn, b23, bi23 - cic he sd hoi quy.
Ta cd dii thdng tin dd tinh cic hd sd niy (bing 2).
TN I II III IV V VI VII VIII
EX
X,
+
+
+
+
0
X,
+ +
+ +
0
B
X3 + + + +
0
ang 2. Ma
X1X2 +
+ +
+
0
trin thuc nghidm v i kdt qua tinh toin.
X1X3 4-
+
-t-
H-
0
X2X3 + +
+ +
0
Xi X2 X3 -1-
+
+ -1-
Y, 27 24 24 27 21 21 24 21 19
Yg 24 21 24 24 21 18 24 18 19
Y3
25,5 22,5*
24 25,5
21 19,5
24 19,5
19
* Tinh cic hi sd tiong phuong trinh hoi quy.
Thay gii tri vao cic cdng tinic trdn ta tinh dupe cu the cac hd sd hdi quy ciia phuong trinh sau:
Gii tii ciia hi sob
\
22,68
bi
0,93 b, 1,31
b, 1,68
b,2
0,9
b,s
-0,56
b23 -0,56
bl23
0,18 Thay cic hd sd nay vio phuong trinh hdi quy ta co:
Kidm tra phuong trinh hdi quy thdng qua kiem tra su cd nghia cua cic hd so hdi quy.
Vide kidm tra dupe ti^n hinh dua theo chuan Student. Cic hd sd hdi quy phii thda man di^u kidn:
lbJ>Sbi.t^
Trong dd: bj - hd sd hdi quy cd thd li bj, by, b^g;
tp- chuan Student; Sbi dp Idch binh phuong trung binh ciia cic he sd, dupe tinh theo cdng thiic:
Y = 22,68 + 0,93X1 + 1,31X2 + 1,68X3 + 0,9X1X2 - 0,56X1X3 - 0,56X2X3 + 0,18X1X2X3
* Kiem tia phuong trinh hSi quy
K = N
KHOA HOC CbNG N G H l
Cic gii
sf
4,5
s^.
4.5
tri cua.
s]
0
^j ti'nh dupe nhu sau
s]
4,5
s]
0
^6
4,5
s?
0
•^8
4,5
Tirdi^u kidn: \h,\ > S^,, t^; S^^yt^ = 0,92 ; IbJ
>0,92
Tit ca cic ho so bj cd gii tq > 0,92 men cd gii tii.
s^(y)=
Bidt dupe S^jta tinh S2(y):
_S? -hSJ +Sj +s; -^Sj -\-Sl -^s; +s; _2Z5_
N ~ 8
Trong dd: N = 8 - li so thi nghidm.
Thay vio ta tinh:
= 2,8
Ta da cd bang
b„
22,68
l>i
0,93
ciie gii trj b, da tin
1)2
1,31 b;, 1,68
K
0,9
1 nhu sau:
b,3
-0,56
b23
-0,56
bl23
0,18
S = ( y ) = ^
111
Tir dd ta tinh dupe dp Idch binh phuong trung binh:
( b , )
( y ) '1,4
N ( b , ) = 0,4
Tra bing chuin sd Student:
Vdi xic suit a = 0,05
f2 = N ( m - l ) = 8 ( 2 - l ) = 8 . Ta cd tp = 2,306.
Dodd:
S(,).tp = 0,4.2,306 = 0 , 9 2
So sinh vcri cic dii-ii kii'n trdn ta thay chi cd cac ho so hdi quy bo , b, , bz, bj cd nghia. Phuong tiinh hoi quy sau khi loai bd hd sd hoi quy cd dang:
y = 22,68 + 0,93X, + 1,31X2 + I.68X3 KiOm tra sir thich irng ciia phuong ti-inh hdi quy:
ViOc ki^m tra theo tidu chuan Fischer tinh dupe phii thda man diOu kiOn: F, < Fb
Trong dd: F,- chuan Fischer xic djnh dupe theo thuc nghidm.
Fb- gii trj chuan xic dinh bing tra bing.
Tir phuong trinh hdi quy da loai bd cac hd sd hoi quy khdng cd nghIa, ta tinh cic ket qua y„ (y^ tinh dupe tir phuong trinh hdi quy) cho tat ca cac phuong in diOu kidn ydu td thi nghiem.
TT 1 . 2
3 4 5 6 7 8
Xo
+ + + + + + + +
X,
+
+
-t-
+
X2 + -1-
+ +
X3 + + + +
Bang 3. K^t qua Y^ cho cic phuong Md hinh
22,68+0,93X1+1,31X2+1,68X3 22,68+0,93X1+1,31X2+1,68X3 22,68+0,93X1+1,31X2+1,68X3 22,68+0,93X1+1,31X2+1,68X3 22,68+0,93X1+1,31X2+1,68X3 22,68+0,93Xi+l,31X,+l,68X3 22,68+0,93X1+1,31X2+1.68X3 22,68+0,93X1+1,31X2+1,68X3
i n
Yu
26,6 24,36
22,5 24,36 22,86 21 19,14
21
y,
25,5 22,5 24 25,5
24 19,5
21 19.5
( y u - Y i ) 1.21 5.01 0,004
11.4 0,57 3,5 0.14 0,54 Tdng: 22,3704 Trong dd: Thay sd vao ta tinh dupe gia tq cOia
S\ nhu sau: g 2 _ 22 ,3704 = 5,59 Gii tri chuan Fischer nhu sau
5,59 F = —^ S^
2,8 = 1,99
Tra bang Fischer vdi a = 0,05; fi = N - N ' = 8 - 4 = 4;f2 = N ( m - l ) = 8 ( 2 - l ) = 8 .
Trong dd: m- so thi nghidm lap lai.
Tacd: Ft = 3,84.
Nhu vay vdi Ft = 1,99 ; F^ = 3,84 ta cd Ft < Fb phuong trinh hoi quy:
y = 22,68 + 0,93X, + 1,3LX,. + 1,68X3 hoin toin thich ung.
3. Thvc nghidm tim ch^ dd cdng nghd thich hpp theo phirong phip Box-Wilson.
Phuong phip tim che dp cdng nghe thich hpp theo Box-Wilson edn gpi la phuong phap leo doc la tim gii tri tiiich hpp ciia cac yeu td Xj de tai dd qua trinh tidn hanh hi^u qua nhat Dua vao phuong trinh hoi quy ta soan ra mdt chuong trinh gom mdt so thi nghidm khdng nhi^u vdi nhimg gia tri thay doi ciia cac y^u td X; theo chi^u tang nhieu nhat ciia tiidng so ra y. Thi nghidm bit dau tir miirc co ban. De ti^n hanh ta lap bang sau (bang 4):
48 NONG NGHIEP VA PHAT TRIEN NONG THON - KY 1 - THANG 1/2012
KHOA HOC C 6 N G N G H I
Bang 4.
X, X2 X3
x°
20 35 30^
x:
25 45 30"
xr
15 25 30'
^ i
5 10
3
b, 0,93 1,31 1,68
lb,X,l 4,65 13,1 5,04
K, 0,2 0,6 0,2
^ i ~ ^ K - ^
1 3 1 Budc tiep theo, tien hinh cic tiii nghiem. Trong
do, cic thi nghidm tim che dp thich licrp dm.rc tien hinh tir mire (0) bit diu tir thi nghiem 1 vi tiiong thudng img vdi cac budc nhay thi nghiem da xic dinh dupe 0 bing trdn se dan den chi tieu can lim dat diem thich hpp. Sd thi nghiem tim che dp thich hpiD se dimg khi chi tidu cin tim vupt qua gii tii thich hpp.
Trong trudng hpp trdn nay, chi tidu thich hpp can tim d day li thcri gian trdn vii dp dcMig deu ciia chat cin trpn trong sin pham. \'i vay trong hai chi tieu thoi gian trdn va dp dcing deu ciia chit cin trdn trong sin pham thi cin cd su ket hpp sao cho thcri gian trpn ngin va dat chi tieu vd dp ddng deu cua sin pham.
Cac budc nhiy: Sj = 1 v/p; Sj = 3% ; S3 = 5"
Cic thi nghiem duoc tien hinh cho tdi chit lupng sin pham giim qua diem cue tri thi dimg thi nghidm.
Vdi budc nhay nhu tren thi ta tien hinh nam thi nghidm vdi thdng sd ciia cic thi nghidm nhu sau:
TN 1 2 3 4 5
Xi (v/p) 18 19 20 21 22
X2(%)
29 32 35 38 41
X3 (C")
20 25 30 35 40 Ta cd bing tong kdt ket qui tiii nghidm sau:
TN 1 2 3 4 5
Ban
Xi
(v/p) 18 19 20 21 22
g 5. Kdt q
X2(%)
29 32 35 38 41
[ua trii r
X3
(C") 20 25 30 35 40
igruem
Thdi gian thi nghidm (phut)
23 22 19 22 24
Tdm lai tir nhimg sd lieu thuc nghidm ti-dn miy ti-dn lap phuong v i i p dung phuong phip quy hoach
thuc nghiem, da tim ducrc che dp thich hpp cho qui trinh trpn vdi nguyen lii'u la gao nhu sau:
Phuong trinh hdi quy: y = 22,68 + 0,93X, + 1,31X2 + 1,68X:,
Trong di): Tdc dp quay ciia thung: Xi (15- 25v/p); He si) cliua day: X. (25-45%); Vi tri cinh: C - C«-C"
ChO dp Iron tdi iru la: Tdc dp quay cua thimg:
Xi = 20 v/p;He si) chira diy: X. = 35%; Vi tri cinh dao:
C« = 30"
Vcri che dp trdn niy thcri gian trdn cho 1 me li 19 phut. Sin pham thu dupe cd dp ddng ddu cua chat trpn vio sin pham dat yeu ciu de ra trude khi thuc hiOn tidn li 100%.
V. KET LUAN VA KIEi\l NGH|
1. Kdt luan
a. Thuc hien de tai nghien ciiu "Nghien ciru thiet ke, che tao thiet hi vi cdng nghO trdn sin pham nhieu cau tii tren miy trdn lap phuong tiiiing quay"
nhom nghien cuu da thiet ke va tham gia vao viOc che tao hoin chinh "May trpn tiiung quay lap phuong" Miy van hinh diing thdng so, em vi da tham gia vao 'Trien lam chp cdng nghe" nhan dip ky niem 50 nam ngay thinh lap truong Dai hpc Bach Khoa Hi Ndi. May cho ket qui tin ciy khi chay Iiy thdng sd cho qui trinh nghidn ciru.
b. Tien hinh thi nghiOm, nghidn cuu va tim che dp trdn tdi uu cua qui trinh trdn tren miy, da xay dung md hinh toin hpc bieu didn vdi phuong trinh hoi quy:
y = 22,68 + 0,93X1 + 1,31X2 + 1,68X3 Vdi cic bien la:
Toe dp quay cua thiing: Xi; HO so chiia diy: X2;
Vi tri cinh dio: X3
Da tim dupe che dp trpn toi uu bing phuong phip Box-Wilson vcri cic thdng sd tdi uu dd la:
Tdc dp quay cua thiing: Xi = 20 v/p ; hO so chiia diy: X2 = 35%; dp nghidng cua cinh dao ; C«= 30°
KHOA HOC C 6 N G N G H £
Vdi che dc) nay tiii quy trinh trdn wai thai gian 19 phut dat dp ddng deu li 100%.
c. Qua trdn so bd mdt so loai thiy ring miy cd th^ trdn dirc.K- nhic^ni loai s.iii pham khd rdi v(y\ nhieu kich thircTc hat khac nhau tir hat riri di'ii bdt trong cac nganh cong nghiep khac nhau.
d. Miiy da dirc,rc chuyi"n giao cho sin xuat (Cdng ty l)u(rc Bae Ninh) de tron thudc- tiin dirm-.
Sin pham sin xiuit ra dat yini cau dc- ra.
TAI UEU THAM KHAO
1. Trinh Chat. Ca sd thiet ke miy vi chi tiet //wr. NXB KHKT, 2001.
2. Nguyen Trong Hiep. Chi tiet may 11.2 NXB BpDaihpc&THCN, WU).
3. Ton ITiat Minh. (ii:io tiinh miy vi thiet bi che bien luong Unic. NXB DHBK 2010
4. Nguydn Minh TuyOn. Quy hoach tiiuc nghiem. NXB KHKT
5. Nguyen Minh Tuy^n. Cic miy khui'y tron tivng cdng nghiep.NXB KHKT 1987
6. A.Ia.Xokolov - Nguydn Trpng Th^ dich.Cosa t/net kd miy s/in xuit tiiuc pham. NXB KHKT, 1976.
7. Bui Dire ll(,n. Kf thuit chi'bii'n luong tiiuc.
NXB KHKT 2006
H. 1/' Van Nhucmg, Ngd Thi Mai, IMCiRATKI^V, U' Nguyen Ducmg. Quy hoach hoa toin hoc cac thirc nghiem tiong nghiin cuu tim toi uu
9. Holland.F.A, Chapman F.S. Liquid mbcing and processing in stirrd tanks -1966
10. Balagolalan C-Casava in Food, Feed and Industry. CRC Press InCBocaraton, Florida
11. Kantorowitsch SB.W Andere.
Chemicmaschinen 1970
12. Gabasov.R, F.Kirilova. Methods ol optimization. Minsk 1980
RESEARCH, DESIGN, MANUFACTURING EQUIPMENT AND MIXED CONSTITUENTS OF PRODUCTS TECHNILOGY ON THE ROTATION DRUM MIXER
Ton That Minh , Ngo Kien Cuong Summary
The name of the project is "Research and design, manufacturing equipment and mixed technology with more constituents product on the mbcer drum machine" We have obtained the follovsing results: We have studied, designed and manufactured a cubic drum mbced machine: It worlced well when we changed the parameters of the machine in the research process. Tlie mixed product is good as requirements. We Have found a mathematical model using regression of mixing:Y = 22,68 + 0,91X, + 1,31X. -^ l.G^Xj. From tiiis equation we have found a mbced mode by optimal Box-Wilson method with the parameters: The rotational speed of the barrel: X, = 20 v/p; Score of barrels filled with mixed: X, = 35%; The inclination of the mixed wing Co = 30''C. With this mode, the mbcing time is 19 minutes to achieve one hundred percent uniformity.
The mixing machine and mbced technology had been transferred to production facilities in Bac Ninh pharmaceutical company to mbc medicine and have good results. It can mix dry separate different materials.
Keywords: Cube mixers, rotation drum, mathematical model Ngudi phin bidn: TS. Pham Cdng DQng
