Umlando omfishane kanye nentuthuko yevelenginama nozzles abrasive

Umlando omfushane weUkuqhunyiswa kwesihlabathifuthiAma-Nozzles Abrasive 

Inqubo yokuqhunyiswa kwesihlabathi yaqala cishe ngo-1870 ngendoda okuthiwa u-Benjamin Chew Tilghman, owabona ukuguga kwamafasitela asogwadule apheshulwa ngumoya. U-Tilghman uphinde waqaphela umphumela isihlabathi esinesivinini esikhulu esingaba nawo ezintweni eziqinile. Bese yenawaqala ukuklama umshini ongaqhubeza isihlabathi ngesivinini esisheshayo kunomoya - futhi ukwazi ukugxilisa lokhu kugeleza emfudlaneni omncane. Umbhobho ogxunyekwe endaweni ehambayo, okuthiingasetshenziswa ukuqondisa umlomo wombhobho ngaphesheya i-substrate.

Ungabona isakhiwo esilula somshini we-sandblasting esithombeni esingezansi.

Umoya onomfutho wawunikezwa ngombhobho. I-nozzle yokuqhumanikasfaka isihlabathi isivinini esidingekayo ukuze kuqhunyiswe ukukhiqiza. Lona bekuwumshini wokuqala wokuqhumisa isihlabathi, nokusetshenziswa kokuqala kwawoumlomo wombhobhoibizwa ngokuthi i-straight bore nozzle.

Ukuze kube maphakathi nawo-1950, zonke imibhobho eqhunyiswa isihlabathi yayibhobokile. Babenokungena okuguquguqukayo okucijile, ingxenye yomphimbo ehambisanayo, nokugcwele-ubude bebhore eqondile kanye nokuphuma okuqondile. Ngokuhamba kwesikhathi, ama-opharetha okuqhuma abona ukuthi njengoba ingaphakathi lale mibhobho liqala ukuguga futhi liguguleka, kwaba nephethini yokuqhuma enkulu nesebenza kahle kakhulu. Lokhu kubuka kuholele ekuthuthukisweni komklamo we-venturi.

Ukuzalwakanye neNtuthukoye-Venturi Nozzle

Ngaphandle kokuthi umlomo we-Venturi ungaveli ekuqhunyisweni kwesihlabathi kuze kube ngama-1950s, umphumela we-Venturi wawukhona kudala ngaphambili. Isisekelo sesayensi somklamo we-venturi saqala ngomsebenzi wesazi sezibalo nesazi sefiziksi saseSwitzerland uDaniel Bernoulli, owathola ukuthi ukuncipha kokucindezela koketshezi kwaphumela ekwenyukeni kwejubane loketshezi. Ushicilele lokhu okutholakele encwadini yakheI-Hydrodynamicango-1738, futhi yaziwa ngokuthi I-Bernoulli's Principle.

Kamuva ngawo-1700, lo msebenzi wenezelwa ngethiyori ehambisanayo evela kusazi sefiziksi sase-Italy u-Giovanni Battista Venturi. I-Venturi ituswa ngokutholakala kokuncipha komfutho woketshezi okwenzeka lapho uketshezi lugeleza engxenyeni eboshiwe yepayipi. Lokhu kwaziwa ngokuthi i-Venturi Effect. 

IIdizayiniye-Venturi Nozzles

I-vi-enuri nozzle yakhelwe in ukungena okuguquguqukayo okude, okunengxenye emfishane eyisicaba eqondile, elandelwa isiphetho eside esiphambukisayo esinwebekayo njengoba ufinyelela ekugcineni kokuphuma kwekhala.

Imibhobho ye-Venturi ingakhuphula ukukhiqiza ngo-70% ngenxa yephethini enkulu yokugwaza ephumela kanye nangenxa yokwanda kwesivinini se-abrasive njengoba iphuma emlonyeni. Empeleni,iisivinini (isivinini sokuphumayo) se-abrasive ephumayo singacishe sibe cishe ngokuphindwe kabili kune-straight bore nozzle, futhi lokhuiamandla ahlanza indawo ngokushesha.

I-Double Venturi Blast Nozzles kuwuhlobo oluthilevelengi phumula.

Ii-venturi kabiliisitayela (njengomdwebo) ingacatshangwa njengamabhomu amabili ochungechungeni anegebe nezimbobo phakathi ukuze kuvunyelwe ukufakwa komoya womoya osemkhathini engxenyeni engezansi yomfula. Isiphetho sokuphuma siphinde sibe banzi kuneindinganisoumsebenzi ukuqhumaumlomo wombhobho. Kokubili ukulungiswa kwenziwa ukuze kwandiswe usayizi wephethini yokuqhuma futhi kuncishiswe ukulahleka kwesivinini esibi.

I-BSTEC inikeza izinga eliphezului-venturiama-nozzles futhi kabilivelei nozzle, so uma usemakethe ufuna ukuthuthukisa ukusebenza kwakho,ungasithinta ukuze uthole imininingwane eyengeziwe.