Khoom Taw Qhia Thiab Yam ntxwv Ntawm Ultrasonic Emulsification Disperser
Aug 15, 2023
Ultrasonic nthwv dej propagate hauv cov kua, ua rau cov kua thiab ntxuav lub tank kom co ua ke ntawm ultrasonic zaus. Thaum cov kua thiab ntxuav lub tank vibrate, lawv muaj lawv tus kheej inherent zaus, uas yog lub zaus ntawm lub suab tsis, yog li ntawd tib neeg hnov buzzing suab. Nrog rau kev txhim kho txuas ntxiv ntawm kev lag luam tu, ntau thiab ntau kev lag luam thiab kev lag luam yog siv cov tshuab ntxuav ultrasonic.
Lub hauv paus ntsiab lus ntawm ultrasonic tu tshuab yog hais tias lub high-frequency oscillation teeb liab emitted los ntawm lub ultrasonic generator yog hloov dua siab tshiab rau hauv high-frequency mechanical oscillation los ntawm ib tug transducer thiab propagated mus rau nruab nrab - tu hnyav. Ultrasonic nthwv dej radiate rau pem hauv ntej hauv cov tshuaj ntxuav, ua rau cov kua ntws thiab ua rau kaum tawm txhiab tus kab ncaj nraim ntawm 50 mus rau 500 μ Cov npuas me me ntawm m muaj nyob hauv cov kua thiab vibrate nyob rau hauv qhov kev txiav txim ntawm lub suab teb. Cov npuas no tsim thiab loj hlob nyob rau hauv qhov tsis zoo siab cheeb tsam qhov twg ultrasonic nthwv dej propagate longitudinally, thaum nyob rau hauv qhov zoo siab cheeb tsam, thaum lub suab siab mus txog ib tug tej yam nqi, cov npuas sai sai thiab mam li nco dheev kaw. Thiab thaum lub npuas kaw, ib qho kev poob siab yog tsim, tsim ntau txhiab tus huab cua nyob ib puag ncig nws, ua rau cov pa phem tsis zoo thiab tawg rau hauv cov tshuaj ntxuav. Thaum cov pab pawg neeg tau qhwv hauv cov roj thiab ua raws li qhov chaw ntawm lub tshuab ntxuav, cov roj yog emulsified, cov khoom sib cais, thiab cov khoom tu yog huv si. Hauv cov txheej txheem no hu ua "cavitation", qhov kev kaw ntawm npuas tuaj yeem tsim qhov kub thiab txias ntawm ob peb puas degrees Celsius thiab instantaneous high pressures tshaj 1000 atmospheric pressures.
Qhov zoo ntawm ultrasonic tu tshuab yog: cov nyhuv tu zoo thiab kev ua haujlwm yooj yim. Lub suab uas tib neeg hnov yog lub suab nthwv dej uas muaj zaus ntawm 20-20000Hz, thiab suab tsis tshaj 20000Hz yog hu ua ultrasonic tsis. Kev sib kis ntawm lub suab tsis propagates longitudinally raws ib tug sinusoidal nkhaus, ua ib tug loj tus naj npawb ntawm cov npuas me me. Ib qho laj thawj yog tias kev ntxhov siab tensile tshwm sim hauv zos hauv cov kua, ua rau lub siab tsis zoo. Qhov txo qis hauv siab ua rau cov pa roj uas tau pib yaj hauv cov kua rau supersaturate thiab khiav tawm ntawm cov kua, ua npuas me me; Lwm qhov laj thawj yog qhov muaj zog tensile kev nyuaj siab "lub kua muag" cov kua rau hauv kab noj hniav, hu ua cavitation.