Txoj Cai Ua Haujlwm ntawm Extruder:

Lub hauv paus ntsiab lus ua haujlwm ntawm extruder:

Lub extruder muaj ib khub ntawm cov ntsia hlau thiab lub tes tsho, uas muaj cov haujlwm ntawm kev sib xyaw thiab kneading. Tom qab cov khoom siv raw nkag mus rau hauv lub extruding kab noj hniav, cov khoom raug extrusion, kev sib txhuam, shearing, thiab lwm yam teebmeem ntawm lub tes tsho, thiab lub siab sab hauv tseem nce mus txog 4Mpa, thiab qhov kub thiab txias tseem nce mus txog 140. degrees Celsius. Tsis pub dhau 3-7s, qhov kub thiab siab nce siab, thiab cov ntaub so ntswg ntawm cov khoom hloov pauv, uas ntxiv gelatinizes cov hmoov txhuv nplej siab, ua kom cov protein, rhuav tshem cov fiber ntau, thiab tua cov kab mob phem xws li Salmonella. Cov khoom siv high-temperature thiab high-pressure tuaj tawm ntawm qhov chaw nres nkoj tawm, thiab nws lub siab yog dheev tso tawm nyob rau hauv ib qho instant, thiab cov ya raws yog ib feem flashed.

Cov qauv ntawm extruder:

1. Lub feeder yog los xyuas kom meej cov khoom noj thiab ruaj khov thiab kho tus nqi noj raws li tus nqi tam sim no ntawm lub tshuab extrusion. Feem ntau, electromagnetic ceev tswj lub cev muaj zog los yog lub zaus hloov pauv yog siv rau kev tswj ceev kom hloov pauv tus nqi noj ntawm lub feeder. Lub qhov hluav taws xob ntawm qhov pub noj hopper feem ntau yog pub los ntawm cov ntsia hlau auger mus rau seem extrusion thiab puffing.

2. Cov kab noj hniav nthuav dav yog tsim los ntawm cov ntsia hlau, lub tes tsho, cov qauv, daim npav cov pob txha, thiab lwm yam. Cov ntsia hlau thiab lub tes tsho lub tes tsho yog sib xyaw ua ke hauv ntu, thiab qib ntawm compression tuaj yeem hloov kho raws li hom thiab cov kev xav tau ntawm cov khoom siv extruded, thiab extruded degree ntawm extruded pub tuaj yeem hloov tau.

3. Lub tshuab puffing tau muab faib ua 3 ntu nyob rau hauv cov nqe lus ntawm kev sib tsoo degree raws li kev ua haujlwm thiab txoj haujlwm:

Kev pub khoom noj: seem no muaj cov ntsia hlau loj loj, uas feem ntau xa thiab compresses cov khoom kom cov khoom ntim rau hauv qhov zawj.

Compression seem: Cov ntsia hlau zawj ntawm ntu no hloov ntawm qhov tob mus rau qhov ntiav raws li cov khoom txav txav mus rau compress cov khoom.

Extrusion seem: cov ntsia hlau zawj yog ntiav, lub suab maj mam ua me, lub zog extrusion tuaj yeem ncav cuag 3.0-10Mpa, thiab qhov kub tuaj yeem ncav cuag 120-150 degrees Celsius. Ntu no muaj qhov siab tshaj plaws thiab qhov kub siab tshaj plaws, yog li kev hnav ntawm cov ntsia hlau thiab lub tes tsho ntsia hlau kuj yog qhov siab tshaj plaws. mob hnyav. Lub qhov hluav taws xob ntawm seem extrusion yog ib qho qauv. Cov duab ntawm tus qauv yog tsim los nrog qhov sib txawv tuag raws li qhov xav tau ntawm cov khoom sib txawv. Cov khoom yog extruded los ntawm qhov tuag qhov ntawm lub template thiab nkag mus rau hauv cov huab cua. Lub siab thiab kub poob qis heev, ua rau nws lub ntim kom nthuav dav thiab ya raws sai sai evaporation, lub cev qhuav dej thiab solidification ua cov ntaub ntawv extruded.

Lub hauv paus ntsiab lus ua haujlwm ntawm extrusion puffing:

Cov khoom siv raw yog sib npaug rau hauv cov ntsia hlau extrusion kab noj hniav los ntawm feeder, qhov chaw ntim ntawm cov kab noj hniav extrusion maj mam txo qis raws li cov kev taw qhia ua ntej ntawm cov khoom, thiab lub zog expansion tau txais los ntawm cov khoom maj mam nce. Nyob rau tib lub sijhawm, cov khoom txav mus rau hauv cov kab noj hniav extrusion kuj tseem muaj zog shearing, rubbing, thiab kev sib txhuam. Qee lub sij hawm, raws li qhov xav tau, daim ntawv hluav taws xob hluav taws xob tuaj yeem muab ntxiv rau sab nraum lub puffing chamber rau kev pabcuam cua sov. Raws li qhov tshwm sim ntawm qhov kev sib koom ua ke, qhov kub ntawm cov khoom nce siab, thiab cov hmoov txhuv nplej siab hauv cov khoom yog gelatinized. Tag nrho pawg ua molten yas jelly. Thaum lub sij hawm thaum cov khoom raug tso tawm los ntawm extrusion tuag qhov, lub siab dheev poob mus rau 0.1Mpa, cov dej sai sai hloov mus rau hauv chav thiab tsub kom lub ntim, thiaj li hais tias lub ntim ntawm cov ntaub ntawv kuj expands sai heev, thiab cov dej vapor ntxiv evaporates thiab khiav los txo cov dej ntawm cov khoom. kuj poob sai. Cov khoom coagulates tam sim ntawd, thiab ntau micropores tshwm sim hauv cov khoom coagulated colloidal. Cov khoom tsis tu ncua extruded columnar lossis cov ntawv puffed cov khoom raug txiav los ntawm lub tshuab txiav thiab tom qab ntawd txias, thiab qee zaum tom qab ua cov kauj ruam xws li ziab thiab txau tshuaj ntxiv (xws li roj, vitamins, thiab lwm yam) yuav tsum tau ua.