Ndedzipi nzira dzekugadzira granulation dzinoshandiswa kugadzira pelletizing lines?

Kune akawanda akasiyana pelletizing line magadzirirwo ari pamusika, asi mitsetse yese yekuisa pelletizing inowira muzvikamu zviviri zvikuru: masisitimu ekuisa pelletizing anotonhora uye masisitimu ekuisa pelletizing anopisa ane chiso chakapfava. Musiyano mukuru pakati pezviviri izvi inguva yekushanda kwekuisa pelletizing. Imwe neimwe yeiyi masisitimu maviri ekuisa pelletizing ine zvayakanakira nezvayakaipira!

Sisitimu yekucheka inotonhora

Sisitimu yekudzikisa ganda rinotonhora ine die, nzvimbo yekutonhodza (mhepo kana mvura), nzvimbo yekuomesa (kana yakatonhodzwa nemvura) uye imba yekudzikisa ganda. Kune mhando mbiri huru dzemasisitimu ekudzikisa ganda rinotonhora, kureva mapelletizer eflake nemapelletizer estrip.

a: Polymer yakanyungudutswa ye flake granulator inoyerera kubva mumichina yekusanganisa ichipinda nemuchina we belt die kana roller refiner kuti igozoiswa mu polymer flakes dzine ukobvu hwakatarwa. Flakes dzinoomarara uye dzinotonhodzwa kure panguva yekufambisa, uye dzozochekwa kuita denderedzwa kana mativi mana ne pelletizer mubhini.

Chip granulation inzira yekare yekugadzira magranules emhando dzakasiyana dzemapolymers kubva kunylon kusvika ku PVCZvakanakira: Kuburitsa kwakawanda. Kururama kunonzi kwakanaka, nekukwanisa kugadzira granulation inosvika 1,843.69 kg/awa. Iyi inzira yekucheka granulation inotonhora, uye ruzha runobuda rwakakwira kupfuura nzira yekucheka granules kubva kuma polymers akanyungudutswa. Ma polymers ekucheka akasimba ane hupenyu hupfupi hwekucheka uye kugadzira upfu kunowanzova dambudziko. Kune mamwe ma polymers, zvimwe zvinhu zvinogona kuonekwa se "cheni yegorosi".

b: Zvishandiso zvepelletizers zvave zvichishandiswa kwenguva yakareba seyezvishandiso zvepelletizers zveflake. Zvine die, chikamu chekutonhodza (mvura yekugezesa kana yekuputira), chikamu chekuomesa (kana chakatonhodzwa nemvura) uye banga rekucheka. Zvishandiso zvinoumbwa nekupfuudza polymer yakanyungudutswa nepaburi rakaiswa rakatwasuka uchishandisa muchina kana pombi yegiya (maburi emazuva ano anogadzirwa nemazvo uye anopisa zvakaenzana kuti agadzire zvishandiso zvemhando yepamusoro zvinoenderana). Kana zvisimbi zvaburitswa kubva muchiumbwa, zvinotonhodzwa nemuchina wekuputira kana nzvimbo yemhepo/vacuum, kana nebhavhu remvura. Kana mvura ichitonhodza, zvisimbi zvinopfuura nepaburi rekuomesa nemhepo inomanikidzwa kubvisa hunyoro uye zvisimbi zvinotumirwa kuimba yekuputira. Zvishandiso zvinochekwa nemazvo kusvika pakureba kunodiwa uchishandisa kucheka kwemapanga maviri akasimba uye anotenderera. Magranule ane dhayamita ye3.175 mm uye kureba kwe3.175 mm ane makona akanyatsojeka.

c: Nzira yechinyakare yekudhirowa mitsetse inosanganisira kutambanudza mitsetse nepakati pechikamu chekutonhodza (chinowanzova chimbuzi chemvura), izvo dzimwe nguva zvinoguma nekudonha kana kusawirirana kwehukuru hwemitsetse. Izvi zvinowanzoitika mumapolymers asina simba rekunyunguduka, akadai sepolypropylene, polyester nenylon. Kana strip ikadonha, zvinhu zvinoraswa, saka vashandisi vanofanira kunyatsoteerera. Kana mitsetse ikadhonzwa zvisingawirirane, mapellets emumvura anofanira kusefewa.

Dzimwe nzira dzekugadzira strip dzinogona kuitwa pasina kutarisirwa kwemushandisi wepedyo nekushandisa mota inofambisa slots infeed conveyor inotsigira nekuparadzanisa strip kubva padhiri kuenda kupelletizer. Strips dzinofambiswa nerudzi urwu rwesimba rekutenderera dzakafanana muhukuru, hadziwire pasi, uye nekudaro hadzina mukana wekubviswa. Dzimwe dzenzira idzi dzinogona kuva nekukwanisa kwekugadzira kwe6803.89 kg/h, zvichienzaniswa neinenge 1814.37 kg/h yenzira yekutambanudza, sezvo mushandisi achigona kungotarisa nhamba shoma yestrips.

Mitsetse yemitsetse haidhuri, iri nyore kushandisa uye iri nyore kuchenesa. Izvi zvine zvakanakira pakusanganisa mavara, sezvo kuchinjana kwemavara maviri akasiyana kunoda kucheneswa kwakazara kwemidziyo. Zvisinei, dambudziko renzira yemitsetse iyi inzvimbo inodiwa yechikamu chekutonhodza, kureba kwayo kunoenderana nezvinodiwa nekupisa kwepolymer.

Sisitimu yekucheka yeDie Face Thermal

Kune mhando nhatu huru dzema "die-surface thermal cutting systems", dzinoti ma "spray granulators", ma "water-jet" (water ring granulators") uye ma "underwear granulators". Kunyangwe ma "systems" akadaro achigona kuva nemagadzirirwo akasiyana, ma "orifice die", "cutting chamber", "motorized rotary lobe knife", "cooling medium", uye "drie method" yekuomesa ma "granules" (kana mvura ichitonhodza).

Chiumbwa che orifice chikamu chakakosha che die face thermal pelletizing system. Chinoiswa chakatwasuka kana kuti chakatwasuka uye chinowanzo piswa nemafuta, steam, kana cartridge kana band heater. Kupisa kwemagetsi kunowanzo shandiswa kuma die madiki; zvisinei, ma die makuru anowanzo piswa ne steam kana oil. Zvinhu zvekuvaka ma die zvinosiyana, asi pasinei nechinhu kana heating medium inoshandiswa, dhayamita ye die orifice inofanira kunge yakafanana; panofanira kuva nekupisa kwakakwana kuchengetedza tembiricha ye polymer mukati mekuita uku; uye nzvimbo inotenderera ye die iyo banga re pelletizing rinotenderera inofanira kunge yakasimba uye yakatsetseka - zvese izvi zvinodiwa kuti pave ne pellet yakafanana.

Sezvo polymer yakanyungudutswa ichiiswa muchimiro, banga rinoita pelletizing, iro rinotenderera nekukurumidza kukuru, rinoricheka kuita pellets. Kazhinji, banga rinenge rakabatana kana kuti riri pedyo zvikuru nepamusoro pechimiro. Kana pellets dzachekwa, dzinorasirwa kure nebanga nesimba re centrifugal dzoendeswa kunzvimbo inotonhorera. Saizi, chimiro, zvinhu uye kuiswa kwebanga zvinogona kusiyana. Mune mamwe masisitimu, banga rinoiswa muchitubu kuti rigadzirise otomatiki daro riri pakati pebanga nedhai; mune mamwe masisitimu, daro riri pakati pebanga nedhai rinogadziriswa nemaoko. Sezvo hupenyu hwebanga huchienderana nekurongeka kwekurongeka kwebanga kubva pakufa, kukwesha kwepolymer, uye hukasha hwemushandisi, kucheka pellets dzepolymer mumamiriro ekunyungudutswa kunodiwa.

a: Ma granulator ekupfapfaidza anokurudzirwa kune ma polymer anonzwa kupisa uye anogara kwenguva refu, akadai sePVC, TPR uye cross-linked polyethylene. Kuyerera kwemvura kusvika ku4989.52 kg/awa kunodiwa kuti nzira yekuyerera kwe polymer kubva kumuchina kuenda kukamuri re pelletizing ive pfupi sezvinobvira uye kushandisa kupisa kushoma. Sezvo polymer ichipfuura nepakati pe die, simba rekutenderera repamusoro pe die rinotenderera rinocheka kuita ma pellet. Kana ma pellet achekwa, anorasirwa kure nebanga rinotenderera uye anobatwa nemhepo inomanikidzwa kutenderera mukamuri re pelletizing rakagadzirwa. Mhepo inotanga kudzima pamusoro pe pellet uye inoitakura kubva mukamuri rekucheka ichiiisa munzvimbo inotonhorera.

Michina yekuomesa yemubhedha ine mvura yakawanda inowanzo shandiswa kutonhodza mapellets. Mapellets anotsvedzwa pasi pe ramp inogadziriswa uye feni inotenderera inoputitsa mweya kuburikidza nemapellets. Kugadzirisa kutenderedza kwe ramp kunogona kuwedzera kana kupfupisa nguva yekugara kwema granules ari mu dryer. Imwe nzira inowanzo shandiswa kutonhodza ndeyekuburitsa mapellets kubva mukamuri rekucheka kuenda mutangi remvura uye kubvisa mvura mu dryer ine mvura yakawanda kana dryer ye centrifugal.
b: Zvigadziriso zvemvura, zvakakodzera mapolymer mazhinji kunze kweaya ane viscosity yakaderera kana viscosity. Michina iyi, inozivikanwawo sewater ring pelletizers, ine pelletizing rate ye13,607.77 kg/awa.

Iyo polymer yakanyungudutswa inochekwa kuita granules kubva padii inopisa nebanga rinotenderera rinotenderera pamusoro pedii. Chinhu chakakosha cheiyi sisitimu yekuisa pelletizing ikamuri rekuisa pelletizing rakagadzirwa newater jet. Mvura inoyerera mu helix kusvika yabuda mukamuri. Kana pellets dzachekwa, dzinokandwa murwizi rwemvura kuti dzidzime pakutanga. Slurry yemvura yepellet inoburitswa mutangi rekuisa pellet kuti itonhore uye yobva yaiswa mu centrifugal dryer kuti ibvise mvura.

c: Pelletizer iri pasi pemvura yakafanana nespray pelletizer uye water jet pelletizer, kunze kwekuti ine mvura inoyerera zvakanaka pamusoro pe die, iyo iri pedyo zvakananga ne die surface. Hukuru hwe pelletizing chamber hwakakura zvakakwana kuti banga re pelletizing ritenderere zvakasununguka pamusoro pe die pasina kurambidza kuyerera kwemvura. Polymer yakanyungudutswa inopfuura nepakati pe die, banga rinotenderera rinocheka mapellets, uye mapellets anotakurwa kubva mu pelletizing chamber nemvura yakanyoroveswa kuenda mu centrifugal dryer. Mu dryer, mvura inodzoserwa mutangi rekuchengetera, inotonhodzwa uye inodzokororwazve; mapellets anopfuura nepakati pe centrifugal dryer kuti abvise mvura.

Pelletizer iri pasi pemvura inofanira kushandisa mold yemuromo ine kupararira kwakaenzana kwekupisa uye nzvimbo dzakakosha dzekudzivirira kupisa. Mapanga madiki epelletizing anodziiswa nemagetsi; mapanga makuru epelletizing anoda maburi anodziiswa nemafuta kana neutsi. Mvura inogadziriswa inodziiswa nguva dzose kusvika pakupisa kwakanyanya, asi haipisi zvakakwana kuti ikanganise kuyerera kwepellets. Magranulators ari pasi pemvura anoshandiswa kune akawanda mapolymers uye mamwe mamodheru anokwanisa kuwana kugona kwegranulation kwe22,679.62 kglh. Maitiro ayo mvura inoyerera pamusoro pechivharo cheorifice ibhenefiti huru kana ichishandiswa pakuisa pelletizing low viscosity kana cohesive polymers, asi kune mamwe mapolymers akadai senylon nemamwe marudzi epolyester, chinhu ichi chinogona kukonzera orifice kuti iome. Zvimwe zvakanakira zvinosanganisira: kuburitsa ruzha rwakaderera nekuti pelletizing inoitwa mumamiriro ekunyunguduka uye mvura inoshanda sechidziviriro cheruzha; uye shanduko shoma dzemapanga epelletizing zvichienzaniswa nemasisitimu ekucheka anotonhora.