Bawul ɗin toshewa bawul ne mai juyawa kamar ma'aunin rufewa ko bututun da ke jujjuyawa. Ta hanyar juyawa digiri 90, tashar tashar da ke kan toshe bawul ɗin iri ɗaya ce ko kuma ta rabu da tashar tashar da ke jikin bawul ɗin, don a cimma buɗewa ko rufewar bawul.
Siffar toshewar bawul ɗin toshewa na iya zama silinda ko kuma mai siffar kon. A cikin toshewar bawul ɗin silinda, hanyoyin gabaɗaya suna da siffar murabba'i; a cikin toshewar bawul ɗin kusurwa, hanyoyin suna da siffar trapezoidal. Waɗannan siffofi suna sa tsarin bawul ɗin toshewa ya zama mai sauƙi, amma a lokaci guda, yana kuma haifar da wani asara. Bawul ɗin toshewa sun fi dacewa don kashewa da haɗa kafofin watsa labarai da kuma don karkatarwa, amma dangane da yanayin aikace-aikacen da juriyar yashewa na saman rufewa, ana iya amfani da su don matsewa. Juya toshewar a hannun agogo don sanya ramin ya yi daidai da bututun don buɗewa, kuma juya toshewar digiri 90 akasin agogo don sanya ramin ya daidaita da bututun don rufewa.
Nau'ikan bawuloli na toshewa galibi an raba su zuwa rukuni masu zuwa:
1. Bawul ɗin toshe mai matsewa
Ana amfani da bawuloli masu matsewa a cikin bututun da ke da ƙarancin matsi a miƙe. Aikin rufewa ya dogara ne gaba ɗaya akan dacewa tsakanin toshe da jikin toshe. Ana samun matsi na saman rufewa ta hanyar matse ƙananan goro. Ana amfani da shi gabaɗaya don PN≤0.6Mpa.
2. Bawul ɗin toshewa
Ana amfani da bawul ɗin toshewa don cimma rufewar jikin toshewa da toshewa ta hanyar matse marufin. Saboda marufin, aikin rufewa ya fi kyau. Yawanci irin wannan bawul ɗin toshewa yana da glandar marufi, kuma toshewar ba ta buƙatar fitowa daga jikin bawul ɗin, don haka rage hanyar zubewar hanyar aiki. Ana amfani da wannan nau'in bawul ɗin toshewa sosai don matsin lamba na PN≤1Mpa.
3. Bawul ɗin toshe kai
Bawul ɗin toshe mai rufe kansa yana gano hatimin matsi tsakanin toshe da jikin toshe ta hanyar matsin lamba na matsakaiciyar kanta. Ƙaramin ƙarshen toshe yana fitowa daga jiki, kuma matsakaiciyar tana shiga babban ƙarshen toshe ta cikin ƙaramin ramin da ke shiga, kuma ana danna toshewar sama. Ana amfani da wannan tsari gabaɗaya don watsa iska.
4. Bawul ɗin toshe mai rufe mai
A cikin 'yan shekarun nan, ana ci gaba da faɗaɗa kewayon aikace-aikacen bawuloli masu toshewa, kuma bawuloli masu toshewa masu rufe mai tare da shafawa mai ƙarfi sun bayyana. Saboda shafawa mai ƙarfi, ana samar da fim ɗin mai tsakanin saman rufewa na toshewa da jikin toshewa. Ta wannan hanyar, aikin rufewa ya fi kyau, buɗewa da rufewa suna ceton aiki, kuma ana hana saman rufewa lalacewa. A wasu lokutan, saboda kayan aiki daban-daban da canje-canje a cikin sashe, ba makawa faɗaɗawa daban-daban za su faru, wanda zai haifar da wasu nakasa. Ya kamata a lura cewa lokacin da ƙofofi biyu suka sami 'yancin faɗaɗawa da ƙullawa, maɓuɓɓugar ruwa ya kamata ta faɗaɗa ta kuma ƙulla da ita.
Lokacin Saƙo: Disamba-22-2022