Dab tsi yog riam rooj vag li qub siv rau

Qhov zoo ntawm lub valve uas txiav los ntawm slurry zoo li rab riam hauv chav ua noj yog qhov riam rooj vag valve. Yooj yim muab tso, nws yog tsim tshwj xeeb los tswj cov kua dej uas muaj cov khoom siv, xws li av nkos, dej phwj tuaj, pulp, thiab ntxhia slurry.

 

Ordinary gate li qub yuav tau daig yooj yim thaum muaj fibers los yog hais. Tsis yog li ntawd nrog riam rooj vag valve - nws lub rooj vag ntug yog sharpened zoo li ib tug hniav, cia nws ncaj qha txiav los ntawm cov khib nyiab nyob rau hauv cov kua thaum kaw.

 

Ua li cas aRiam rooj vag ValveUa hauj lwm?

Cov "riam" yog hais txog lub npoo -zoo li tus ntug tsim ntawm lub rooj vag phaj. Thaum lub valve kaw, lub rooj vag txiav downwards, zoo li hlais cov hnyuv ntxwm, txiav fibers, hais, los yog cov khoom khov. Tsis zoo li cov rooj vag zoo tib yam li qub, riam rooj vag li qub feem ntau tsis tas yuav muaj lub rooj zaum kab noj hniav, tiv thaiv cov khoom seem.

 

A bi-directional sealing riam rooj vag valvetuaj yeem tiv taus qhov sib txawv ntawm ob sab, thaum aunidirectional riam rooj vag valveyog haum rau ib qho kev taw qhia xwb. Ntau tus neeg siv tsis pom qhov taw tes no, ua rau xau tom qab kev teeb tsa tsis raug.

 

Nyob rau hauv cov nqe lus ntawm cov tsis muaj, cov pa riam rooj vag li qub ntawm DN50 mus rau DN1200, nrog PN10 thiab PN16 yog qhov kev ntsuas siab tshaj plaws (xws li 1.0 MPa thiab 1.6 MPa). Lub cev feem ntau yog ua los ntawm cam khwb cia hlau los yog hlau ductile, thaum lub rooj vag riam feem ntau yog 410 stainless hlau los yog 304/316 stainless hlau, nrog thickness feem ntau ntawm 5 thiab 12 hli. Rau cov slurries heev corrosive, duplex stainless hlau rooj vag daim hlau tuaj yeem xaiv.

 

Cov ntawv thov tseem ceeb

Mining thiab Slurry Handling ( riam rooj vag valve rau slurry daim ntaub ntawv)

Kuv cov tailings thiab concentrate pipelines yog lub plawv ntawm riam rooj vag li qub. Mineral slurry feem ntau muaj ntau tshaj 60% cov khoom (piv txwv li, hlau concentrate hmoov, coal slime), uas yuav hnav los ntawm qhov qub qub hauv hnub. Cov riam rooj vag valve cov hniav tuaj yeem txiav los ntawm cov khoom sib txuam, thiab nrog cov roj hmab -kab lub cev, nws lub neej kev pabcuam tuaj yeem tshaj 5,000 lub voj voog.

 

Ntawm Wushan Copper Mine, lub DN350 riam rooj vag valve siv nyob rau hauv lub tailings pipeline, kev khiav hauj lwm ntawm 1.2 MPa thiab 55 degree, qhia tias tsis sticking los yog clogging rau ob xyoos.riam rooj vag valve rau kev siv slurryfeem ntau haum nrog cov chaw nres nkoj tshem tawm los tiv thaiv cov khoom tsim- nyob rau hauv qab ntawm lub rooj zaum.

 

Cov nroj tsuag kho dej khib nyiab

Hauv chav dewatering ntawm cov chaw kho dej khib nyiab, sludge nrog txog 80% cov ntsiab lus dej yog tov nrog cov ntaub qhwv thiab cov ntaub yas.resilient zaum riam rooj vag valvesiv cov roj hmab tag nrho uas qhwv lub cev. Thaum lub rooj vag txiav rau hauv, cov roj hmab deforms thiab ntsaws ruaj ruaj nyob ib ncig ntawm lub rooj vag ntug, ua tiav npuas-nruj kaw-tawm. Raws li MSS SP-81, cov li qub no qhia tias xoom xau hauv qab 0.2 MPa huab cua ntsuas. Ntau cov nroj tsuag qub qub tau siv npauj npaim li qub, tsuas yog kom muaj cov ntaub qhwv ib ncig ntawm lub disc - hloov mus rau riam rooj vag li qub daws qhov teeb meem.

 

Pulp thiab Ntawv Kev Lag Luam

Thaum pulp sib xws yog 3% -6%, cov fibers ntev thiab entangled heev. Cov riam rooj vag valve cov hniav tuaj yeem yooj yim txiav los ntawm cov fibers. Lawv feem ntau pom nyob rau hauv tshuab tshuab los ntawm cov digesters thiab ntawm cov khoom siv hluav taws xob ntauwd. Rau qhov kub thiab txias, siv cov rooj vag stainless hlau nrog PTFE lub rooj tso cai rau kev ua haujlwm mus txog 150℃thiab 1.0 MPa. Areplaceable rooj riam rooj vag valveNws yog qhov ua tau zoo ntawm no - tom qab hnav lub rooj zaum, koj tuaj yeem hloov lub rooj zaum U-shaped lossis O-ring roj hmab tsis tau tshem tawm tag nrho lub valve, txiav lub sijhawm kho ntawm ib nrab hnub mus rau ib nrab teev.

 

Lwm yam kev siv: fais fab nroj tsuag, tshuaj, khoom noj

Hauv lub zog cog limestone-gypsum FGD systems (pH 4-6, cov ntsiab lus 15%), riam rooj vag li qub cais cov kab slurry ncig. Hauv kev lag luam khoom noj khoom haus, thaum tuav cov qhob noom xim kasfes lossis txiv lws suav muab tshuaj txhuam, riam rooj vag li qub ua los ntawm 316L nrog polished nto raws li FDA cov cai. Hauv kev lag luam tshuaj, lawv feem ntau siv rau titanium dioxide thiab dye filter ncuav mog qab zib.

 

Kev xaiv xaiv

Riam rooj vag li qub tsis haum rau kev khiav dej num - lawv tsuas yog tsim los rau tag nrho qhib lossis kaw tag nrho txoj haujlwm. Yog tias koj xav tau kho qhov qhib, lub qhov rooj ntug yuav erode sai. Tsis tas li ntawd,riam rooj vag valve rau kev siv slurryyuav tsum paub qhov txawv ntawm "lug-type" thiab "wafer-type". Wafer-hom li qub yog clamped los ntawm cov kav dej flanges thiab tsim nyog rau cov kab me me; lug-type li qub muaj threaded lugs thiab yog haum rau loj diameters los yog pipelines uas yuav tsum tau tshem tawm ntawm ib sab.

 

According to FCI 70‑2, knife gate valves typically achieve Class II or Class III (allowable minor leakage). Bi‑directional sealing versions can reach Class IV. A rule of thumb: if the medium contains coarse particles (diameter >3 hli), xaiv lub rooj vag hlau kaw nrog lub rooj roj hmab; rau cov hmoov zoo (xws li, cement), cov roj hmab-lined tag nrho yog hnav-resistant.

 

Ib Lo Lus Kawg

Lub riam rooj vag valve tsis yog universal valve, tab sis thaum tuav cov kua dej khov, cov ntaub nplaum nplaum, los yog cov kua nplaum nplaum nplaum, nws muaj kev ntseeg siab dua li pob li qub, npauj npaim li qub, lossis cov rooj vag zoo tib yam. Qhov tseem ceeb yog xaiv cov khoom siv rooj tog kom raug thiab sealing hom raws li qhov nruab nrab kub, particle hardness, thiab concentration. Lwm zaus koj pom lub raj xa dej nqa cov av nkos lossis cov ntaub so ntswg, koj yuav paub tias yog vim li cas siv rab riam rooj vag valve.