Iivalvu zokulawula umkhomba-ndlelazizinto ezibalulekileyo kwiinkqubo ze-hydraulic kunye ne-pneumatic. Badlala indima ebalulekileyo ekulawuleni ukuhamba kolwelo ngaphakathi kwenkqubo, beyalela icala lentshukumo kwii-activators ezifana neesilinda kunye neenjini. Ukuqonda ukusebenza kwazo, iintlobo, kunye nokusetyenziswa kwazo kubalulekile kuye nabani na obandakanyekayo kwiinkqubo zamandla olwelo.
Iivalvu zokulawula umkhomba-ndlela zizixhobo ezilawula indlela yokuhamba kwehydraulic okanye ipneumatic fluid. Banokuvumela okanye bavimbele ukuhamba kwamanzi kwiindawo ezithile zenkqubo, ngaloo ndlela belawula ukuhamba kwee-activators. Ezi zivalo zihlelwa ngokwesiqhelo ngokusekelwe kuqwalaselo lwazo, ezinokubandakanya iindlela ezimbini, iindlela ezintathu, okanye iindlela ezine zoyilo.
- **IiValufa zeNdlela ezimbini**: Ezi zivalo zinezibuko ezimbini kwaye zinokuvumela ulwelo ukuba luhambe kwicala elinye okanye luvale ngokupheleleyo.
- **IiValufa zeNdlela-ntathu**: Ngamazibuko amathathu, ezi zivalo zinokuqondisa ulwelo kwenye yezitshixo ezimbini, ezihlala zisetyenziswa kwizicelo ezinjengokulawula isilinda esibambeleyo esinye.
- **IiValufa ezineNdlela ezine**: Ezi zivalo zisetyenziswa ngokuqhelekileyo kwiisilinda ezisebenza kabini, zivumela ulwelo ukuba lungene kwaye luphume kwi-cylinder, ngaloo ndlela lulawula ukwandiswa kunye nokuhlehla.
Ukusebenza kweevalvu zokulawula i-directional-control inokuba yi-manual, mechanical, okanye i-automated. Iivalvu zezandla zifuna ukuba umsebenzi atshintshe ngokwasemzimbeni isithinteli sevalve, ngelixa iinketho zoomatshini zinokusebenzisa izithombo okanye iileva ukuqalisa. Iivalve ezizenzekelayo zihlala zilawulwa yimiqondiso yombane, zisebenzisa i-solenoids ukutshintsha indawo yevalve.
Xa ivalve ivuliwe, itshintsha indlela yolwelo, mhlawumbi iluvumele ukuba luhambe luye kwi-activator echongiweyo okanye lubuyisele umva kwindawo yokugcina amanzi. Esi sikhundla senza ulawulo oluchanekileyo lokuhamba koomatshini, ukwenza iivalvu zokulawula ulwalathiso zibaluleke kakhulu kwizicelo ezahlukeneyo.
Iivalvu zokulawula umkhomba-ndlela zinokuvulwa ngeendlela ezininzi:
1. **I-Manual actuation**: Abasebenzisi basebenzisa iileva okanye amaqhina ukulawula isivalo ngokuthe ngqo.
2. **I-Mechanical Actuation**: Ezi zivalo zenziwa ngokuqhagamshelwa koomatshini, ezidla ngokusetyenziswa kunye namanye amacandelo omatshini.
3. **I-Actuation yoMbane**: Iivalvu ezisebenza nge-Solenoid zilawulwa ngemiqondiso yombane, zibonelela ngezakhono zokusebenza ezikude.
4. **I-Pneumatic Actuation**: Ezinye iivalvu zivulwa kusetyenziswa umoya ocinezelweyo, olungele ukusetyenziswa okuthile.
Iivalvu zolawulo lwe-Directional zisetyenziswa kuluhlu olubanzi lwezicelo, kubandakanya:
- **Oomatshini boShishino**: Balawula ukuhamba kweesilinda zehydraulic koomatshini bokushicilela, iilifti, kunye nezinye izixhobo.
- **Ii-Automotive Systems**: Isetyenziswa kwiisistim ze-hydraulic braking kunye ne-power steering.
- **Izicelo ze-Aerospace**: Iinkqubo zokulawula kwinqwelo-moya, ukulawula izixhobo zokumisa kunye neeflaphu.
- **IziXhobo zezoLimo**: Ukuhamba kolwelo ngokuthe ngqo kwiitrektara nezivuni, ukuqinisaukusebenza kunye nokusebenza kakuhle.
Isishwankathelo, iivalvu zokulawula ulwalathiso zizinto ezibalulekileyo kwiinkqubo zamandla olwelo, ezivumela ulawulo oluchanekileyo lwendlela yokuhamba kwamanzi. Iindidi zabo ezahlukeneyo kunye neendlela zokusebenzisa zivumela ukuba zisetyenziswe kuwo wonke amashishini amaninzi, ziqaqambisa ukuguquguquka kwazo kunye nokubaluleka kwazo. Njengoko iteknoloji ihambela phambili, uyilo kunye nokusebenza kwezi zivalo ziyaqhubeka zivela, ziqinisekisa ukuba zihlala zibalulekile koomatshini bale mihla kunye neenkqubo ezizenzekelayo. Ukuqonda iziseko zabo kubalulekile kuye nabani na osebenza nge-hydraulic okanye i-pneumatic systems, evula indlela yoyilo olusebenzayo nolusebenzayo.