超(chao)(chao)(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)(bo)(bo)在(zai)液(ye)體(ti)(ti)中傳播(bo),使(shi)(shi)液(ye)體(ti)(ti)和(he)清(qing)(qing)(qing)洗(xi)(xi)槽在(zai)超(chao)(chao)(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)(bo)(bo)頻(pin)率(lv)下(xia)振動(dong)(dong),液(ye)體(ti)(ti)和(he)清(qing)(qing)(qing)洗(xi)(xi)槽在(zai)自己的(de)(de)固(gu)有頻(pin)率(lv)(即(ji)聲(sheng)(sheng)(sheng)(sheng)(sheng)頻(pin))下(xia)振動(dong)(dong),人們聽到(dao)嗡嗡聲(sheng)(sheng)(sheng)(sheng)(sheng)。沿著清(qing)(qing)(qing)洗(xi)(xi)行(xing)業的(de)(de)發(fa)展,越(yue)來越(yue)多(duo)的(de)(de)行(xing)業和(he)企業使(shi)(shi)用超(chao)(chao)(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)(bo)(bo)清(qing)(qing)(qing)洗(xi)(xi)機(ji)。依(yi)據超(chao)(chao)(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)(bo)(bo)清(qing)(qing)(qing)洗(xi)(xi)器(qi)的(de)(de)原(yuan)理,來源于超(chao)(chao)(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)(bo)(bo)換能器(qi)的(de)(de)高(gao)頻(pin)率(lv)振動(dong)(dong)數據信號根據超(chao)(chao)(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)(bo)(bo)換能器(qi)轉換為(wei)(wei)高(gao)頻(pin)率(lv)現代(dai)控(kong)制理論,散(san)播(bo)到(dao)做為(wei)(wei)物質的(de)(de)清(qing)(qing)(qing)理有機(ji)溶(rong)劑中,超(chao)(chao)(chao)音波(bo)(bo)(bo)(bo)(bo)在(zai)清(qing)(qing)(qing)潔液(ye)中粗密(mi)地(di)前后左右(you)放(fang)射性(xing),使(shi)(shi)液(ye)體(ti)(ti)流動(dong)(dong)性(xing)而(er)(er)造成(cheng)(cheng)數十萬(wan)米的(de)(de)直徑50-500μm的(de)(de)細(xi)微汽泡,液(ye)體(ti)(ti)中存有的(de)(de)細(xi)微汽泡在(zai)音場中振動(dong)(dong)。這些氣(qi)(qi)泡形成(cheng)(cheng)并生長在(zai)超(chao)(chao)(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)縱(zong)向傳輸負(fu)壓(ya)(ya)區,而(er)(er)在(zai)正壓(ya)(ya)區,當(dang)聲(sheng)(sheng)(sheng)(sheng)(sheng)壓(ya)(ya)達(da)到(dao)一(yi)定值時,氣(qi)(qi)泡迅速增加(jia),然后突然關閉(bi)。并在(zai)氣(qi)(qi)泡閉(bi)合(he)時產生沖擊波(bo)(bo)(bo)(bo)(bo),在(zai)其周圍(wei)產生上(shang)千個(ge)大氣(qi)(qi)壓(ya)(ya),破壞不(bu)溶(rong)性(xing)污(wu)物而(er)(er)使(shi)(shi)他們分散(san)于清(qing)(qing)(qing)洗(xi)(xi)液(ye)中,當(dang)團體(ti)(ti)粒(li)子被(bei)油污(wu)裹著而(er)(er)黏附在(zai)清(qing)(qing)(qing)洗(xi)(xi)件(jian)表面時,油被(bei)乳(ru)化(hua)(hua),固(gu)體(ti)(ti)粒(li)子及脫離,從而(er)(er)達(da)到(dao)清(qing)(qing)(qing)洗(xi)(xi)件(jian)凈化(hua)(hua)的(de)(de)目(mu)的(de)(de)。在(zai)這種被(bei)稱之為(wei)(wei)“空化(hua)(hua)”效應的(de)(de)過程中,氣(qi)(qi)泡閉(bi)合(he)可形成(cheng)(cheng)幾百(bai)度的(de)(de)高(gao)溫(wen)和(he)超(chao)(chao)(chao)過1000個(ge)氣(qi)(qi)壓(ya)(ya)的(de)(de)瞬(shun)間高(gao)壓(ya)(ya)。超(chao)(chao)(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)(bo)(bo)清(qing)(qing)(qing)洗(xi)(xi)機(ji)的(de)(de)優點是:超(chao)(chao)(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)(bo)(bo)清(qing)(qing)(qing)洗(xi)(xi)效果好,操作簡單。人們聽到(dao)的(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)音是20-20000Hz頻(pin)率(lv)高(gao)于20000Hz的(de)(de)聲(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)(bo)(bo)信號,稱為(wei)(wei)超(chao)(chao)(chao)聲(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)(bo)(bo)(bo)。一(yi)個(ge)原(yuan)因是液(ye)體(ti)(ti)中的(de)(de)局(ju)部拉(la)應力(li)形成(cheng)(cheng)負(fu)壓(ya)(ya),壓(ya)(ya)力(li)的(de)(de)減小使(shi)(shi)原(yuan)溶(rong)解氣(qi)(qi)體(ti)(ti)飽和(he),但從液(ye)體(ti)(ti)中逃(tao)逸,成(cheng)(cheng)為(wei)(wei)一(yi)個(ge)小泡;另一(yi)個(ge)原(yuan)因是強拉(la)應力(li)將(jiang)液(ye)體(ti)(ti)撕裂成(cheng)(cheng)一(yi)個(ge)孔,稱為(wei)(wei)空化(hua)(hua)。
發布時間:
2020
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01
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14
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