Troubleshooting Common Faults ntawm Key Auxiliary Equipment
1. Feeding System (Poob-hauv-Weight Feeder, Volumetric Feeder, Side Feeder)
Fault Phenomena: Hloov cov zis tawm, tsis raug proportioning, tsis ruaj tsis khov extruder tam sim no.
Common Uas thiab Troubleshooting:
Cov khoom siv txuas / Caking: Tshawb xyuas cov khoom ntws hauv lub hopper, thiab ntxuav cov khoom los yog nruab ib lub koov tawg.
Screw los yog lub cev muaj zog ua haujlwm tsis zoo: Tshawb xyuas yog tias cov ntsia hlau pub mis yog jammed los ntawm cov khoom txawv teb chaws, yog tias cov bearings puas lawm, thiab yog tias lub cev muaj zog khiav zoo.
Load Cell Failure: Txheeb xyuas seb lub xov tooj ntawm tes yog them nrog cov khoom siv uas cuam tshuam rau qhov hnyav thiab yog tias cov xov hlau tsis zoo, ces ua xoom calibration.
Qhov Chaw Tsis Tsim Nyog: Txheeb xyuas yog tias PID tswj tsis sib haum nrog cov yam ntxwv ntawm cov khoom siv tam sim no.
2. Kev tswj qhov kub thiab txias (cov cua kub cua sov, cua txias kiv cua, cov roj kub kub, dej chillers)
Fault Phenomena: Qhov kub thiab txias hloov pauv, tsis yooj yim rau cua sov los yog txias, txias slug lossis thermal decomposition hauv cov khoom.
Common Uas thiab Troubleshooting:
Heater Malfunction: Ntsuas qhov tsis kam ntawm cov cua sov coils nrog lub multimeter los txiav txim seb qhov qhib Circuit Court tau tshwm sim.
Cooling Channel Thaiv: Xyuas seb cov kav dej, li qub thiab cov ntxaij lim dej ntawm cov dej / roj cua txias tsis muaj kev cuam tshuam.
Thermocouple puas los yog misalignment: Tshawb xyuas yog tias cov thermocouple thaiv kev ruaj ntseg thiab yog tias qhov ntsuas qhov kawg yog nruj nreem txuas rau qhov ntsuas ntsuas, lossis hloov cov thermocouple rau kev sim.
Temperature Control Module/PID Malfunction: Txheeb xyuas yog tias qhov tso zis ntawm tus tswj qhov kub thiab txias yog qhov qub thiab hloov kho qhov ntsuas PID.
3. Melt Processing Units (Screen Changers, Melt Pumps, Static Mixers)
Fault Phenomena: Kev hloov pauv txawv txav hauv lub siab yaj (dhau los yog txo qis), muaj impurities lossis streaks hauv cov khoom.
Common Uas thiab Troubleshooting:
Screen Changer Clogging: Qhov no yog qhov feem ntau ua rau siab yaj siab; cov ntxaij lim dej yuav tsum tau hloov raws li cov txheej txheem.
Melt Pump Malfunction: Tshawb xyuas cov iav hnav ntawm lub iav twj tso kua mis, xyuas seb puas muaj cov bearings puas, thiab xyuas qhov kev sib dhos ntawm cov coupling.
Sealing Leakage: Tshawb xyuas qhov sib txuas ntawm qhov sib txuas ntawm cov hloov pauv hloov pauv, cov twj tso kua mis, lub taub hau tuag, thiab lwm yam., txhawm rau puas tsuaj, thiab xyuas seb cov hlua khi puas xoob.
4. Lwm Cov Kev Pabcuam
Pelletizing System: Tsis sib xws pellet loj, agglomerated pellets, txiav tsis tiav. Tshawb xyuas qhov ntse ntawm cov hniav txiav, qhov sib txawv ntawm cov hniav txav thiab ruaj khov, thiab qhov sib txuam ntawm cov pelletizing dej kub thiab kev sib hloov ceev.
Drying / Conveying System: Cov khoom siv siab noo noo, kev ua haujlwm tsis zoo. Xyuas seb lub desiccant puas ua tsis tiav, txheeb xyuas qhov ziab kom qhuav thiab huab cua ntim, thiab tshuaj xyuas cov raj xa dej rau kev thaiv lossis cua xau.