超(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)在(zai)(zai)(zai)液體(ti)中(zhong)傳(chuan)播,使(shi)(shi)液體(ti)和(he)(he)清(qing)(qing)洗(xi)槽在(zai)(zai)(zai)超(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)頻率(lv)下振動(dong)(dong)(dong),液體(ti)和(he)(he)清(qing)(qing)洗(xi)槽在(zai)(zai)(zai)自己的(de)(de)(de)固有(you)頻率(lv)(即聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)頻)下振動(dong)(dong)(dong),人們聽到(dao)嗡嗡聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)。沿著(zhu)清(qing)(qing)洗(xi)行業的(de)(de)(de)發(fa)展(zhan),越來越多的(de)(de)(de)行業和(he)(he)企業使(shi)(shi)用超(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)清(qing)(qing)洗(xi)機(ji)(ji)。依據超(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)清(qing)(qing)洗(xi)器的(de)(de)(de)原(yuan)(yuan)理(li),來源于超(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)換(huan)能器的(de)(de)(de)高(gao)頻率(lv)振動(dong)(dong)(dong)數據信(xin)號(hao)根據超(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)換(huan)能器轉換(huan)為高(gao)頻率(lv)現代控制理(li)論,散播到(dao)做為物質的(de)(de)(de)清(qing)(qing)理(li)有(you)機(ji)(ji)溶劑(ji)中(zhong),超(chao)音波(bo)在(zai)(zai)(zai)清(qing)(qing)潔(jie)液中(zhong)粗(cu)密地前后左(zuo)右放射(she)性(xing),使(shi)(shi)液體(ti)流動(dong)(dong)(dong)性(xing)而(er)造成(cheng)(cheng)數十(shi)萬米的(de)(de)(de)直(zhi)徑50-500μm的(de)(de)(de)細微汽(qi)泡,液體(ti)中(zhong)存有(you)的(de)(de)(de)細微汽(qi)泡在(zai)(zai)(zai)音場中(zhong)振動(dong)(dong)(dong)。這(zhe)些氣泡形成(cheng)(cheng)并(bing)生長在(zai)(zai)(zai)超(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)縱向傳(chuan)輸(shu)負(fu)壓區,而(er)在(zai)(zai)(zai)正壓區,當(dang)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)壓達到(dao)一定值時,氣泡迅速(su)增(zeng)加(jia),然(ran)后突然(ran)關閉(bi)。并(bing)在(zai)(zai)(zai)氣泡閉(bi)合時產生沖擊波(bo),在(zai)(zai)(zai)其周圍產生上千個(ge)大氣壓,破壞不溶性(xing)污(wu)物而(er)使(shi)(shi)他(ta)們分散于清(qing)(qing)洗(xi)液中(zhong),當(dang)團體(ti)粒(li)子被油(you)污(wu)裹著(zhu)而(er)黏附在(zai)(zai)(zai)清(qing)(qing)洗(xi)件(jian)表面時,油(you)被乳(ru)化,固體(ti)粒(li)子及(ji)脫離,從而(er)達到(dao)清(qing)(qing)洗(xi)件(jian)凈化的(de)(de)(de)目的(de)(de)(de)。在(zai)(zai)(zai)這(zhe)種(zhong)被稱之為“空化”效應的(de)(de)(de)過(guo)程中(zhong),氣泡閉(bi)合可形成(cheng)(cheng)幾百度的(de)(de)(de)高(gao)溫和(he)(he)超(chao)過(guo)1000個(ge)氣壓的(de)(de)(de)瞬間高(gao)壓。超(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)清(qing)(qing)洗(xi)機(ji)(ji)的(de)(de)(de)優(you)點是(shi):超(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)清(qing)(qing)洗(xi)效果好,操(cao)作簡單。人們聽到(dao)的(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)音是(shi)20-20000Hz頻率(lv)高(gao)于20000Hz的(de)(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)信(xin)號(hao),稱為超(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)。一個(ge)原(yuan)(yuan)因(yin)是(shi)液體(ti)中(zhong)的(de)(de)(de)局部拉(la)應力形成(cheng)(cheng)負(fu)壓,壓力的(de)(de)(de)減小使(shi)(shi)原(yuan)(yuan)溶解氣體(ti)飽和(he)(he),但從液體(ti)中(zhong)逃逸,成(cheng)(cheng)為一個(ge)小泡;另(ling)一個(ge)原(yuan)(yuan)因(yin)是(shi)強拉(la)應力將(jiang)液體(ti)撕裂成(cheng)(cheng)一個(ge)孔,稱為空化。
發(fa)布(bu)時間:
2020
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01
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14
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