Vacuum freeze dryer imidziyo yekuomesa inonyatso shanda inobvisa hunyoro kubva kune zvinhu kuburikidza nekudzikira-tembiricha. Iwo anoshandiswa zvakanyanya mumaindasitiri ezvekudya, emishonga, zvipenyu, uye maindasitiri emakemikari. Nheyo yavo yemusimboti ndeyekudzikisa tembiricha yepasi pazasi pechando munzvimbo yevacuum, zvichiita kuti unyoro hunyunguruke kubva kune yakasimba kuenda kune gasi, nekudaro kudzivirira kukuvadzwa kune inoshanda zvinongedzo zvechinhu chinokonzerwa nekupisa kwakanyanya. Aya anotevera anodonongodza nzira yekushandisa kubva pazvinhu zvitatu: pre-gadziriro yekushanda, maitiro ekushanda, nekuchengetedza.
Kugadzirira-kushanda
Equipment Inspection: Simbisa kuti inotonhora musungo, vacuum pombi, yekudziya system, uye control system zviri muhurongwa hwekushanda. Tarisa kana tembiricha yekuteya inotonhora yasvika paukoshi hwepresetwa (inowanzoda pre-kutonhora kusvika pasi -40 degrees ), kana mwero wepombi yevacuum uri mukati mechiyero, uye kana maringi ekuvharisa asina kusimba.
Material Pretreatment: Ita-mushonga wechando usati watanga maererano nehunhu. Semuyenzaniso, chikafu chinoda kuiswa muchando pa-30 dhigirii kusvika -40 dhigirii kwemaawa 12-24 kuti chando chipere; mishonga yemishonga inoda kudzora kutonhora kwemazinga kudzivirira kukuvara kwekristaro. Kusakwana pre-chando kunogona kutungamira mukudonha panguva ye sublimation nhanho, inokanganisa kunaka kwechigadzirwa chakapedzwa.
Kurodha uye Kurongeka: Paridza zvinhu zvakaenzana pamatireyi emidziyo, nehupamhi hwakakurudzirwa hwe5-10mm. Matireyi akawanda anofanirwa kuchengetedza nzvimbo (semuenzaniso, 38mm) kudzivirira kuvhiringa mhute. Kune zvigadzirwa zvine zvinhu zvinoputika, shandisa zvinhu zvekurongedza zvine mhepo yakanaka yekupinza.
Maitiro Okushanda
Pre-Danho rechando: Seta pre-tembiricha yechando (-40 dhigirii kusvika -50 dhigirii) uye nguva (chinja zvichienderana nehuwandu hwezvinhu, kazhinji maawa 2-4) kuburikidza nehungwaru control panel. Munguva iyi, ita shuwa kuti tembiricha inotonhora yemusungo yakagadzikana kudzivirira yakawandisa ice crystal kuumbwa nekuda kwekushanduka kwekushisa.
Vacuuming and Sublimation Drying: Mushure me-kuomesa nechando, tanga vacuum pombi kuti uderedze kudzvanya kwesystem kusvika pazasi 10Pa (kuwana vacuum yakajairwa ye5Pa pasina{3}}mutoro). Panguva ino, chando chiri muzvinyorwa chinotanga kuderera, chinoda simba kubva kune conductive kudziyisa system (semuenzaniso, sherufu kudziyisa). Kupisa kwekushisa kunofanira kuwedzera zvishoma nezvishoma (inokurudzirwa kutanga kubva -20 dhigirii, ichiwedzera ne5-10 dhigirii imwe neimwe nhanho) kudzivirira kupisa kwenzvimbo.
Desorption Drying Stage: Kana tembiricha yemidziyo yasvika ambient tembiricha, desorption yekuomesa nhanho inotanga. Panguva ino, iyo vacuum level inoda kuderedzwa zvakare (kusvika pazasi 2 Pa), uye tembiricha yesherufu yakawedzera kusvika 30-50℃kubvisa yakasara yakasungwa mvura. Munguva iyi, iyo sampuli tembiricha yekuratidzira inoda kuenderera kutariswa kudzivirira yakawandisa tembiricha kubva pakukonzera denaturation.
Shutdown uye Sampling: Mushure mekuoma, tanga wadzima iyo yekudziya system, wozodzima pombi yekutsvaira mushure mekunge tembiricha yemidziyo yadzikira kusvika kune tembiricha. Pakupedzisira, suma kuomesa nitrogen kuputsa vacuum uye kubvisa zvinhu. Pa-zvinhu zvakakosha, zvinokurudzirwa kushandisa-bhatani remagetsi defrost function kuti chigadziriso chidzorerwe pachinhanho chayo nekukurumidza.
