Dab tsi yog qhov zoo ntawm cov tshuab hluav taws xob ultrasonic piv nrog cov suab nrov nrov?

Piv nrog rau cov suab tsis hnov ​​suab, ultrasonic tsis muaj ntau yam txawv txawv: kev nthuav tawm cov yam ntxwv - lub wavelength ntawm ultrasonic tsis yog luv heev, thiab qhov luaj li cas ntawm cov teeb meem zoo tib yam yog ntau zaus loj dua lub wavelength ntawm ultrasonic tsis. Yog li ntawd, lub zog diffraction ntawm ultrasonic tsis muaj zog heev. Nws yog nyob rau hauv ib tug homogeneous nruab nrab. Nws muaj peev xwm propagate nyob rau hauv ib txoj kab ncaj nraim, thiab luv luv lub wavelength ntawm ultrasonic yoj, qhov zoo tshaj plaws tus yam ntxwv no yog. Cov yam ntxwv ntawm lub zog-thaum lub suab tawm hauv huab cua, nws thawb cov khoom hauv huab cua kom vibrate rov qab los ua haujlwm ntawm cov khoom. Lub suab nthwv dej yog lub cev muaj nuj nqis uas qhia tias lub suab nthwv dej ua haujlwm sai npaum li cas. Raws li qhov kev siv tib yam, qhov siab dua qhov zaus ntawm lub suab nthwv dej, lub zog ntau dua nws muaj. Vim lub siab zaus ntawm ultrasonic tsis, lub zog ntawm ultrasonic tsis yog loj heev piv nrog cov suab tsis zoo tib yam. Cavitation-Thaum ultrasonic nthwv dej propagate hauv cov kua, cov kab noj hniav me me yog tsim nyob rau hauv cov kua vim muaj kev vibration hnyav ntawm cov kua hais. Cov kab noj hniav me me no nthuav dav thiab kaw nrawm, ua rau muaj kev sib tsoo ntawm cov kua ua kua, ua rau muaj kev kub ntxhov ntawm ntau txhiab mus rau kaum tawm txhiab tus cua. Qhov kev cuam tshuam hnyav ntawm cov khoom no yuav ua rau qhov kub ntawm cov kua nce siab sai sai, ua kom muaj txiaj ntsig zoo, kom cov kua dej tsis sib haum xeeb (xws li dej thiab roj) emulsify, thiab ua kom cov kua dej ua kom nrawm dua. tshuaj tiv thaiv. Ntau yam teebmeem tshwm sim los ntawm qhov kev txiav txim ntawm ultrasonic tsis nyob rau hauv cov kua yog hu ua ultrasonic cavitation. Lub suab tsis muaj zaus siab dua 20KHz. Cov ceg ntawm acoustics uas kawm txog tiam, kev nthuav tawm, thiab kev txais tos ntawm ultrasound, nrog rau ntau yam kev cuam tshuam ntawm ultrasound thiab kev siv yog hu ua ultrasound. Cov khoom siv uas tsim cov nthwv dej muaj xws li cov tshuab hluav taws xob ultrasonic (xws li roj cua xuav, cua xuav, thiab kua xuav, thiab lwm yam), hluav taws xob ultrasonic generators ua siv lub hauv paus ntsiab lus ntawm electromagnetic induction thiab electromagnetic nkaus, thiab cov nyhuv electrostrictive thiab ferromagnetism ntawm piezoelectric crystals. . Electro-acoustic transducer ua los ntawm magnetostrictive nyhuv ntawm cov khoom, thiab lwm yam.

Ultrasonic generators tau siv dav hauv kev vuam yas, ultrasonic vibration nozzles, nruam vuam ntawm woven fabrics, non-woven fabrics, slitting, ntug banding, shearing, thiab ntug banding ntawm yas zaj duab xis. Nws muaj peev xwm emit ultrasound tsis tu ncua los yog Tswj lub sij hawm thaum lub ultrasonic yoj tawm raws li qhov xav tau; nws tuaj yeem siv los ua kom muaj kev ua haujlwm, lossis nws tuaj yeem ntsia tau rau ntawm cov kab ntau lawm kom paub txog kev ua haujlwm tsis siv neeg.