Indlela yokulawula indawo yekhanda elithelayo yeumshini wokukhipha amagwebu onengcindezi ephezulukuhlanganisa ikhanda elithela kanye nomkhono obekwe ngaphandle kwekhanda elithulula.Isilinda esime mpo se-hydraulic sihlelwa phakathi komkhono nekhanda elithelayo.Umzimba wesilinda we-hydraulic cylinder eqondile uxhunywe nomkhono.Ivalvu Induku ixhunywe nekhanda elithelayo.Ngesikhathi esifanayo, kunomzila wesitimela ovundlile emzimbeni womshini okhipha amagwebu usimende, kanye nembobo yokuqondisa ehambisana nomzila wesitimela inikezwa emkhonweni.Isilinda esivundlile se-hydraulic sinikezwa phakathi komshini womshini okhiqiza amagwebu onengcindezi ephezulu kanye nomkhono.Umzimba wesilinda we-hydraulic cylinder enezingqimba uxhunywe nomzimba womshini wokwenza amagwebu onengcindezi ephezulu, futhi isiqu se-valve sixhunywe nomkhono.Imodeli yokusetshenziswa inezinzuzo zokonga abasebenzi kanye nokusebenza kahle kokukhiqiza.

Izingxenye ezimbili ze-A no-Bumshini wokugcwalisa i-polyurethanezilinganiswa ngokunembile futhi zinyakaziswa ngesivinini esikhulu, futhi izingxenye ezimbili u-A no-B zilethwa ekhanda lokuxuba ngamaphampu amabili okulinganisa okunemba okuphezulu.Ngemuva kokunyakaziswa okunesivinini esikhulu nokunamandla, uketshezi olubonakalayo lufafazwa ngokulinganayo ukwenza umkhiqizo ofunekayo.

Isitshalo esigcwele ugwebu esinengcindezi ephezulu siqukethe lezi zinhlelo ezilandelayo: isistimu yokugeleza kwezinto, isistimu yemitha, isistimu yesekethe yomoya, isistimu yokufudumeza, uhlelo lokuhlanza, imishini ekhethekile yokufakwa kwegwebu le-polyurethane kanye negwebu.Inqobo nje uma ingxenye ye-polyurethane izinto zokusetshenziswa (izingxenye ze-isocyanate ne-polyether polyol) zihlangabezana nezinkomba zokusebenza kokwakheka.Yenziwe nge-polyether polyol kanye ne-polyisocyanate phambi kwama-ejenti agwebu, ama-catalysts, ama-emulsifiers nezinye izithasiselo zamakhemikhali, ngemva kokuvela kwamakhemikhali kanye negwebu.Kunezinhlobo ezintathu zenqubo yokwenza amagwebu emshinini ogcwele ingcindezi ephezulu: indlela ye-pre-polymer, indlela ye-semi-polymer kanye nesinyathelo esisodwa sokwenza amagwebu inqubo yokwenza i-pre-polymer (impahla emhlophe) kanye (impahla emnyama) okokuqala, bese wengeza amanzi, i-catalyst, i-surfactant, ezinye izithasiselo ku-pre-polymer exutshwe ngaphansi kokugqugquzela ngesivinini esikhulu ukuze kugwetshwe amagwebu, ngemva kokuphulukisa ekushiseni okuthile kungavuthwa.Inqubo yokwenza amagwebu yendlela ye-semi-prepolymer ukwenza ingxenye ye-polyether polyol (impahla emhlophe) kanye ne-disocyanate (impahla emnyama) ibe yi-prepolymer kuqala, bese wengeza enye ingxenye ye-polyether noma i-polyester polyol ne-disocyanate, amanzi, i-catalyst, i-surfactant. , ezinye izithasiselo, njll., futhi uzixube ngaphansi kwesivinini esikhulu ukunyakazisa ukuze kukhihlize amagwebu.I-polyether noma i-polyester polyol (emhlophe) ne-polyisocyanate (emnyama), amanzi, i-catalyst, i-surfactant, i-ejenti evuthelayo, ezinye izithasiselo, njll. zengezwa esinyathelweni esisodwa futhi zixutshwe ngesivinini esikhulu ukuze kugwetshwe.Isinyathelo esisodwa sokwenza amagwebu inqubo esetshenziswa kakhulu namuhla.Kukhona nendlela yokwenza amagwebu ngesandla, okuyindlela elula, lapho zonke izinto ezingavuthiwe zikalwa ngokunembile, zifakwe esitsheni bese zixutshwa ngokushesha futhi zijovelwe esikhunjeni noma endaweni ukuze kugcwaliswe igwebu.Qaphela: I-polyisocyanate (emnyama) kufanele ikalwe ekugcineni.

Iumshini we-polyurethane foame ngokuvamile igwebu ekamelweni lokushisa, futhi inqubo yokubumba ilula.Ngokwezinga lemishini yokwakha, ingahlukaniswa ibe amagwebu okwenziwa ngesandla kanye nokukhipha amagwebu komshini;ngokwengcindezi yokukhipha amagwebu, ingahlukaniswa ibe amagwebu anomfutho ophansi kanye negwebu elinomfutho ophansi;ngokwendlela yokubumba, ingahlukaniswa ngokuthulula amagwebu kanye nokufutha igwebu.