Thaum ib tug tsawg expansion tus nqi nyob rau hauvfloating ntses pub pellet ua tshuabyog ib qho teeb meem uas feem ntau lees paub, kev nthuav dav ntau dhau feem ntau tsis pom. Txawm li cas los xij, nws tuaj yeem ua rau cov khoom muag muag heev, xoob xoob, thiab ua rau tawg. Qhov no ua rau muaj kev poob qis thaum lub sijhawm thauj mus los thiab khaws cia, cuam tshuam tsis zoo rau cov khoom saj thiab txee lub neej, thiab ua rau cov nqi tsim khoom.
Paub meej
I. Cov Phenomena tshwj xeeb ntawm kev nthuav dav ntau dhau
Phenomenon Description:
- Tshaj Volume Expansion:Cov khoom nthuav mus rau ib lub ntim ntau dua li qhov xav tau, ua rau ib qhotsawg ceevthiab ibsoftly kev ntxhib los mos.
- Fragility:Cov khoom tawg yooj yim nrog lub teeb kov thiab nyuaj rau pwm.
- Internal Pores thiab Structure:Internal pores yogloj dhauthiab sib faib tsis sib npaug, feem ntau nrog cov voids txuas cov pores, ua rau tsis zoo ntawm cov qauv kev ntseeg.
- Qhov Teeb Meem Zoo:Cov tsos ntawm cov khoom yog feem ntaudeformed,cu ibntxhib, dull nto. Qee cov khoom kuj tseem muajscorched ntuglos yog chaw.
- Kev tuav thiab ntim cov teeb meem:Thaumkev thauj mus losthiabntim, cov khoom yog yooj yimtawgthiabpulverized, ua apoob tus nqi ntau tshaj 15%, cuam tshuam loj heev rau cov khoom tsim nyog thiab profitability.
II. Cov laj thawj tseem ceeb ntawm kev nthuav dav ntau dhau
1. Ntau lub Chamber Kub
- Tshaj -Gelatinization:Thaum tshav kub kub hauv lubthaj chaw nthuav davtshaj200 degree, cov khoom yuav dhau los ua gelatinized. Thaum demolding, ya raws vaporizes sai heev, ua rau muaj zog expansion ntau dhau.
- Faulty Temperature Control:Yog tiascua kub ntsiabmuaj zog heev los yogntsuas kub tswjmalfunction, lub chamber kub yuav nce uncontrollably, tsis stabilize nyob rau hauv qhov pom ntau yam.
- Tshaj -Insulation:Ib tug tuab heev chamberrwb thaiv tsev txheejtiv thaiv tshav kub dissipation, ua raulocalized overheatingthiab exacerbating qhov teeb meem ntawm ntau expansion.
2. Cov khoom tsis zoo ntawm Chav thiab cov khoom siv raw
- High Chav Siab:Yog tiaschav siabtshaj0.5MPa, cia li poob rau hauv siab raws li cov khoom demolding ua rau sai ya raws vaporization, ua rau ntau expansion.
- Tsawg Raw Material Moisture:Cov khoom nyoos nrog cov dej noo hauv qab no12%ua rau tsis zoo flowability nyob rau hauv lub chamber. Qhov no ua rau muaj qhov kub thiab txias hauv cheeb tsam thaum shearing, ua rau nthuav dav heev.
- Cov ntsiab lus siab Starch:Cov ntaub ntawv nrog ntau dhaucov ntsiab lus amylose(xws liglutinous mov) muaj feem ntau rau kev nthuav dav tom qab puffing, ua rau siab dua - dua - qhov yuav tsum tau nthuav dav.
3. Cov Cheebtsam tsis raug thiab qhov chaw tsis zoo hauv Floating Fish Feed Pellet Maker Machine
- Me Me Die Orifice:Lub qhov taub tuag uas me dhau ua rau qhov tso tawm qeeb qeeb, ntau dhau lub siab tsim nyob rau hauv lub chamber, thiab dhau -expansion raws li cov khoom tawm ntawm qhov tuag.
- Screw ntau dhau:Cov ntsia hlau siab ceev nce shearing thiab extrusion, uas ua rau ntau dhauhmoov nplej gelatinization. Yog tias lub sijhawm nyob hauv lub sijhawm luv dhau, qhov no tiv thaiv kev tsim cov qauv puffed ruaj khov.
- Slow feeding ceev:Thaum lub sijhawm pub mis qeeb dhau lawm, cov khoom siv raw nyob hauv chav tuag ntev dhau lawm, ua rau ntau tshaj -gelatinization thiab nthuav dav.
4. Cov txheej txheem thiab tsim cov teeb meem
- Tus neeg saib xyuas ntau dhau:Ib qho dhau - ntxiv ntawm cov tshuaj tua kab ua rau ntau dhaucov khoom siv expansion quab yuam, ua rau ib tug ntau dhau puffing tus nqi.
- Unbalanced Raw Material Formulation:Ib tug formulation tsis txaus binders los txhawb lub puffed qauv ua rau ib tug overlymosthiabtshaj - nthuavkhoom.
- Fluctuating Temperature thiab Pressure Parameters:Kev hloov pauv ntau dhau ntawm qhov kub thiab txias thaum lub sij hawm tsim khoom tiv thaiv kev tsim ntawm ib puag ncig puffing ruaj khov, ua rau muaj teeb meem ntau dua - nthuav dav.
III. Kev daws teeb meem thiab kev tiv thaiv rau kev nthuav dav ntau dhau
1. Kub thiab siab Parameter hloov
- Lower Expansion Zone Kub:Teem qhov kub thiab txias hauv qhovthaj chaw nthuav davmus rau qhov optimum ntau yam ntawm160-180 degreelos tiv thaiv dhau -gelatinization.
- Xyuas Cov Cuab Yeej Cuab Yeej:Tsis tu ncua tshuaj xyuas covcua kub ntsiabthiabkub controllerskom tswj tau qhov kub thiab txias thiab tsis txhob overheating.
- Kho Chav Siab:Teeb lubchav siabrau0.3-0.5 MPakom tswj tau qhov chaw ruaj khov, tiv thaiv vaporization ntawm noo noo ntau dhau.
- Kho cov txheej txheem rwb thaiv tsev:Xyuas kom meej tias cov txheej rwb thaiv tsev tsis yog tuab heev, tso cai rau kom muaj cua sov dissipation thiab tswj qhov kub thiab txias.
2. Raw Material thiab Formula Optimization
- Kho cov ntsiab lus noo noo:Tswj cov dej noo cov ntsiab lus ntawm raw cov ntaub ntawv nyob rau hauv lub optimum ntau yam ntawm12%-15%. Qhov no nce cov khoom viscosity, uas tuaj yeem cuam tshuam kev nthuav dav.
- Txhim kho cov ntsiab lus Binder:Ntxiv tus nqi tsim nyog ntawm binder rau cov khoom siv raw cov mis los txhim kho cov khoom tsim kev txhawb nqa, tiv thaiv kev sib tw ntau dhau thiab nthuav dav.
- Leavening Agent Control:Txwv cov leavening agent rau0.5%-2%ntawm cov khoom hnyav hnyav kom ntseeg tau tias sib xyaw ua ke thiab tiv thaiv dhau - ntxiv, uas tuaj yeem ua rau ntau dhau.
3. Cheebtsam thiab Parameter Kho rau Floating Fish Feed Pellet Extruder Tshuab
- Hloov Lub Taub Hau:Siv lub taub hau tuag nrog me ntsisloj orificetxhawm rau pab txhawb cov khoom tawm sai dua thiab txo qhov siab ntawm lub chamber.
- Kho Screw Speed:Txo cov ntsia hlau ceev kom txo qis kev sib tsoo ntau dhau, uas pab tswj cov gelatinization ntawm cov hmoov txhuv nplej siab thiab tiv thaiv dhau - nthuav dav.
- Nce noj ceev:Ua kom cov khoom noj ceev kom zoo dua cov ntsia hlau ceev thiab qhov ntsuas kub, uas ua rau cov khoom siv nyob hauv lub sijhawm luv luv thiab tsis txhob nthuav dav.
4. Kev tswj hwm txhua hnub thiab kev tiv thaiv
- Saib xyuas Parameter:Tsim kom muaj qhov ntsuas ntsuas ntsuas ntsuas ntsuas ntsuas kub, ntsuas qhov ntsuas, ntsuas qhov nrawm, thiab lwm yam ntsuas qhov tseem ceeb. Qhov no yuav pab txheeb xyuas tam sim thiab kho qhov hloov pauv.
- Regular Calibration:Calibratekub controllersthiabsiab sensorstsis tu ncua los xyuas kom meej qhov kev nyeem ntawv raug thiab tswj xyuas cov kev ntsuas ruaj khov.
- Kev sim ntau lawm:Ua ntej txhua pawg loj, ua me me - batch sim, kho qhov tsis zoo rau qib siab ua ntej ntau lawm los tiv thaiv ntau dhau puffing.
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