超(chao)(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)在(zai)(zai)(zai)液(ye)(ye)體(ti)(ti)中(zhong)傳播(bo),使(shi)液(ye)(ye)體(ti)(ti)和(he)清(qing)(qing)洗(xi)(xi)槽在(zai)(zai)(zai)超(chao)(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)頻率(lv)下振動,液(ye)(ye)體(ti)(ti)和(he)清(qing)(qing)洗(xi)(xi)槽在(zai)(zai)(zai)自(zi)己的(de)(de)(de)(de)(de)(de)(de)(de)固有頻率(lv)(即聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)頻)下振動,人(ren)們(men)聽到嗡(weng)嗡(weng)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)。沿著清(qing)(qing)洗(xi)(xi)行業的(de)(de)(de)(de)(de)(de)(de)(de)發展,越來(lai)越多的(de)(de)(de)(de)(de)(de)(de)(de)行業和(he)企業使(shi)用超(chao)(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)清(qing)(qing)洗(xi)(xi)機(ji)(ji)。依據超(chao)(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)清(qing)(qing)洗(xi)(xi)器(qi)的(de)(de)(de)(de)(de)(de)(de)(de)原理,來(lai)源(yuan)于(yu)超(chao)(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)換能器(qi)的(de)(de)(de)(de)(de)(de)(de)(de)高(gao)(gao)頻率(lv)振動數據信(xin)號(hao)(hao)根據超(chao)(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)換能器(qi)轉換為(wei)高(gao)(gao)頻率(lv)現代(dai)控制理論,散(san)播(bo)到做為(wei)物(wu)質(zhi)的(de)(de)(de)(de)(de)(de)(de)(de)清(qing)(qing)理有機(ji)(ji)溶劑(ji)中(zhong),超(chao)(chao)音(yin)波(bo)(bo)(bo)在(zai)(zai)(zai)清(qing)(qing)潔液(ye)(ye)中(zhong)粗(cu)密地前后左(zuo)右放射(she)性,使(shi)液(ye)(ye)體(ti)(ti)流動性而造成(cheng)數十萬米的(de)(de)(de)(de)(de)(de)(de)(de)直徑50-500μm的(de)(de)(de)(de)(de)(de)(de)(de)細(xi)微汽(qi)泡(pao)(pao)(pao),液(ye)(ye)體(ti)(ti)中(zhong)存有的(de)(de)(de)(de)(de)(de)(de)(de)細(xi)微汽(qi)泡(pao)(pao)(pao)在(zai)(zai)(zai)音(yin)場中(zhong)振動。這(zhe)些氣(qi)(qi)(qi)泡(pao)(pao)(pao)形(xing)(xing)(xing)成(cheng)并生(sheng)長(chang)在(zai)(zai)(zai)超(chao)(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)縱向傳輸負(fu)壓(ya)(ya)(ya)(ya)區,而在(zai)(zai)(zai)正壓(ya)(ya)(ya)(ya)區,當(dang)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)(ya)(ya)達(da)到一(yi)定值時,氣(qi)(qi)(qi)泡(pao)(pao)(pao)迅速增加(jia),然后突然關閉(bi)。并在(zai)(zai)(zai)氣(qi)(qi)(qi)泡(pao)(pao)(pao)閉(bi)合時產(chan)生(sheng)沖(chong)擊波(bo)(bo)(bo),在(zai)(zai)(zai)其周圍產(chan)生(sheng)上千個(ge)大氣(qi)(qi)(qi)壓(ya)(ya)(ya)(ya),破壞不溶性污物(wu)而使(shi)他們(men)分散(san)于(yu)清(qing)(qing)洗(xi)(xi)液(ye)(ye)中(zhong),當(dang)團體(ti)(ti)粒(li)子(zi)被油污裹著而黏附在(zai)(zai)(zai)清(qing)(qing)洗(xi)(xi)件表面時,油被乳化(hua),固體(ti)(ti)粒(li)子(zi)及脫離,從而達(da)到清(qing)(qing)洗(xi)(xi)件凈化(hua)的(de)(de)(de)(de)(de)(de)(de)(de)目的(de)(de)(de)(de)(de)(de)(de)(de)。在(zai)(zai)(zai)這(zhe)種被稱之為(wei)“空化(hua)”效(xiao)應的(de)(de)(de)(de)(de)(de)(de)(de)過程(cheng)中(zhong),氣(qi)(qi)(qi)泡(pao)(pao)(pao)閉(bi)合可形(xing)(xing)(xing)成(cheng)幾百度的(de)(de)(de)(de)(de)(de)(de)(de)高(gao)(gao)溫和(he)超(chao)(chao)過1000個(ge)氣(qi)(qi)(qi)壓(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)(de)(de)(de)瞬(shun)間高(gao)(gao)壓(ya)(ya)(ya)(ya)。超(chao)(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)清(qing)(qing)洗(xi)(xi)機(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)(de)優點是(shi):超(chao)(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)清(qing)(qing)洗(xi)(xi)效(xiao)果好,操作簡單。人(ren)們(men)聽到的(de)(de)(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)音(yin)是(shi)20-20000Hz頻率(lv)高(gao)(gao)于(yu)20000Hz的(de)(de)(de)(de)(de)(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)信(xin)號(hao)(hao),稱為(wei)超(chao)(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)。一(yi)個(ge)原因是(shi)液(ye)(ye)體(ti)(ti)中(zhong)的(de)(de)(de)(de)(de)(de)(de)(de)局部(bu)拉應力形(xing)(xing)(xing)成(cheng)負(fu)壓(ya)(ya)(ya)(ya),壓(ya)(ya)(ya)(ya)力的(de)(de)(de)(de)(de)(de)(de)(de)減小使(shi)原溶解氣(qi)(qi)(qi)體(ti)(ti)飽和(he),但從液(ye)(ye)體(ti)(ti)中(zhong)逃逸,成(cheng)為(wei)一(yi)個(ge)小泡(pao)(pao)(pao);另一(yi)個(ge)原因是(shi)強拉應力將液(ye)(ye)體(ti)(ti)撕裂(lie)成(cheng)一(yi)個(ge)孔,稱為(wei)空化(hua)。
發布時間:
2020
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01
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14
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