Lub rooj vag valve tau dav siv rau kev txiav cov cuab yeej nrog txoj kab uas hla ntawm DN ≥ 50mm, thiab qee zaum lub rooj vag li qub kuj tau siv rau cov cuab yeej txiav nrog cov kab me me.
Qhov qhib thiab kaw ib feem ntawm lub rooj vag valve yog lub rooj vag, thiab cov kev taw qhia ntawm lub rooj vag yog perpendicular mus rau cov kev taw qhia ntawm cov kua.Lub rooj vag valve tsuas yog qhib tag nrho thiab kaw tag nrho, thiab tsis tuaj yeem hloov kho lossis throttled.Lub rooj vag muaj ob qhov chaw sealing.Ob qhov chaw sib khi ntawm cov qauv siv feem ntau siv lub rooj vag valve tsim ib lub voj voog.Lub kaum sab xis sib txawv nrog lub valve tsis, feem ntau 50, thiab 2 ° 52 'thaum nruab nrab kub tsis siab.Lub rooj vag ntawm lub rooj vag qhov rooj tuaj yeem ua rau tag nrho, uas yog hu ua lub rooj vag nruj;nws tseem tuaj yeem ua rau hauv lub rooj vag uas tuaj yeem tsim qhov me me ntawm deformation los txhim kho nws qhov kev tsim khoom thiab them nyiaj rau qhov sib txawv ntawm lub sealing nto lub kaum sab xis thaum ua.Lub phaj yog hu ua lub rooj vag elastic.Lub rooj vag valve yog lub ntsiab tswj cov khoom siv rau kev ntws los yog xa cov ntim ntawm cov hmoov, cov khoom siv nplej, cov khoom siv granular thiab cov khoom me me.Nws yog dav siv hauv metallurgy, mining, cov khoom siv hauv tsev, nplej, tshuaj lom neeg kev lag luam thiab lwm yam lag luam los tswj kev hloov pauv lossis txiav tawm sai.
Lub rooj vag li qub tshwj xeeb yog xa mus rau cov hom cam khwb cia steel rooj vag li qub, uas tuaj yeem muab faib ua lub rooj vag qhov rooj, qhov rooj sib npaug ntawm lub qhov rooj, thiab lub rooj vag qhov rooj raws li kev teeb tsa ntawm qhov chaw sib khi.Lub rooj vag valve tuaj yeem muab faib ua: ib hom rooj vag, ob lub rooj vag hom thiab lub rooj vag elastic;parallel gate valve tuaj yeem muab faib ua ib hom rooj vag thiab ob lub rooj vag hom.Raws li txoj haujlwm xov ntawm lub qia valve, nws tuaj yeem muab faib ua ob hom: nce qia rooj vag valve thiab tsis-nce qia rooj vag valve.
Thaum lub rooj vag valve raug kaw, lub sealing nto tuaj yeem raug kaw tsuas yog los ntawm qhov nruab nrab siab, uas yog, tso siab rau qhov nruab nrab siab los nias lub sealing nto ntawm lub rooj vag phaj rau lub rooj zaum ntawm lub rooj zaum ntawm sab nraud kom ntseeg tau tias kev sib khi ntawm lub rooj vag. sealing nto, uas yog tus kheej sealing.Feem ntau ntawm lub rooj vag valve yog yuam foob, uas yog hais tias, thaum lub valve kaw, lub rooj vag yuav tsum tau nias rau lub rooj zaum valve los ntawm sab nraud quab yuam, thiaj li ua kom lub sealing nto sealing.
Lub rooj vag ntawm lub rooj vag valve txav mus rau hauv txoj kab ncaj nraim nrog lub qia valve, uas yog hu ua lifting qia gate valve (tseem hu ua lub nce qia rooj vag valve).Feem ntau muaj cov xov trapezoidal ntawm lub lifter, thiab los ntawm cov txiv ntoo nyob rau sab saum toj ntawm lub valve thiab cov lus qhia groove ntawm lub valve lub cev, lub rotating tsab ntawv tsa suab hloov mus rau hauv txoj kab ncaj nraim, uas yog hais tias, kev khiav hauj lwm torque yog hloov. nyob rau hauv kev ua haujlwm thrust.
Thaum lub valve qhib, thaum nqa qhov siab ntawm lub rooj vag phaj yog sib npaug li 1: 1 npaug ntawm txoj kab uas hla ntawm lub valve, qhov kev tso dej ntawm cov kua dej tau raug thaiv tag nrho, tab sis txoj haujlwm no tsis tuaj yeem saib xyuas thaum lub sijhawm ua haujlwm.Hauv kev siv tiag tiag, lub apex ntawm lub qia valve yog siv los ua ib qho kos npe, uas yog, txoj hauj lwm uas lub valve qia tsis txav yog coj raws li nws txoj hauj lwm qhib tag nrho.Txhawm rau txiav txim siab qhov tshwm sim ntawm qhov ntsuas kub vim qhov hloov pauv kub, feem ntau qhib rau txoj haujlwm saum toj kawg nkaus, thiab tom qab ntawd tig rov qab 1/2-1 tig, raws li txoj haujlwm qhib tag nrho.Yog li ntawd, lub siab qhib txoj hauj lwm ntawm lub valve yog txiav txim los ntawm txoj hauj lwm ntawm lub rooj vag (uas yog, stroke).
Hauv qee lub rooj vag li qub, cov txiv ntoo qia yog teem rau ntawm lub rooj vag phaj, thiab kev sib hloov ntawm tes log tsav lub valve qia kom tig, thiab lub rooj vag phaj yog lifted.Hom valve no yog hu ua rotary qia rooj vag valve los yog lub qia dub lub qhov rooj valve.
Cov khoom ntawm Rising Stem Soft Sealing Gate Valve | ||
Tsis muaj. | Lub npe | Khoom siv |
1 | Lub cev valve | Hlau Hlau |
2 | Cavity Jacket | EPDM |
3 | Cavity Cap | EPDM |
4 | Bonnet | Hlau Hlau |
5 | Hexagon Socket Bolt | Zinc Plating hlau los yog stainless hlau |
6 | Bracket | Hlau Hlau |
7 | Packing Gland | Hlau Hlau |
8 | Tes Log | Hlau Hlau |
9 | Xauv Nut | Zinc Plating hlau los yog stainless hlau |
10 | Stud Bolt | Zinc Plating hlau los yog stainless hlau |
11 | Yas Washer | Zinc Plating hlau los yog stainless hlau |
12 | Txiv ntseej | Zinc Plating hlau los yog stainless hlau |
13 | Phaj Washer | Zinc Plating hlau los yog stainless hlau |
14 | Lub nplhaib sealing | EPDM |
15/16/17 | O-Ring | EPDM |
18 | Cov ntaub ntawv | PTFE |
19/20 ib | Lubricating Gasket | Bronze los yog POM |
21 | Stem Txiv Ntoo | Bronze los yog tooj dag |
22 | Xauv Nut | Zinc Plating hlau los yog stainless hlau |
23 | Valve Phaj | Cov Hlau Hlau + EPDM |
24 | Qe | 304 Stainless Hlau, Alloy Steel 1Cr17Ni2 lossis Cr13 |
British Stardard Rising Stem Soft Sealing Gate Valve | |||||||||
Specification | Siab | Qhov Loj (mm) | |||||||
DN | nti | PN | φD | φK | L | H | H1 | H2 | φd |
50 | 2 | 10/16 | 165 | 125 | 178 | 441 ib | 358.5 ib | 420.5 ib | 22 |
25 | 165 | 125 | 178 | 441 ib | 358.5 ib | 420.5 ib | 22 | ||
40 | 165 | 125 | 441 ib | 358.5 ib | 420.5 ib | ||||
65 | 2.5 | 10/16 | 185 | 145 | 190 | 452 ib | 359.5 ib | 429.5 ib | 22 |
25 | 185 | 145 | 190 | 452 ib | 359.5 ib | 429.5 ib | 22 | ||
40 | 185 | 145 | 452 ib | 359.5 ib | 429.5 ib | ||||
80 | 3 | 10/16 | 200 | 160 | 203 | 478 ib | ib 378 | 462 ib | 22 |
25 | 200 | 160 | 203 | 478 ib | ib 378 | 462 ib | 22 | ||
40 | 200 | 160 | 478 ib | ib 378 | 462 ib | ||||
100 | 4 | 10/16 | 220 | 180 | 229 | 559.5 ib | 449.5 ib | 553 ua | 24 |
25 | 235 | 190 | 229 | 567 ib | 449.5 ib | 553 ua | 24 | ||
40 | 235 | 190 | 567 ib | 449.5 ib | 553 ua | ||||
125 | 5 | 10/16 | 250 | 210 | 254 | 674.5 ib | 549.5 ib | 677 ib | 28 |
25 | 270 | 220 | 254 | ib 684.5 | 549.5 ib | 677 ib | 28 | ||
40 | 270 | 220 | ib 684.5 | 549.5 ib | 677 ib | ||||
150 | 6 | 10/16 | 285 | 240 | 267 | 734 ib | 591.5 ib | 747 ib | 28 |
25 | 300 | 250 | 267 | ib 741.5 | 591.5 ib | 747 ib | 28 | ||
40 | 300 | 250 | ib 741.5 | 591.5 ib | 747 ib | ||||
200 | 8 | 10 | 360 | 310 | 292 ib | 9 15.5 | 735.5 ib | 938 ua | 32 |
16 | 340 | 295 | 923 ib | 735.5 ib | 938 ua | ||||
25 | 360 | 310 | 292 ib | 9 15.5 | 735.5 ib | 938 ua | 32 | ||
40 | 375 | 320 | 923 ib | 735.5 ib | 938 ua | ||||
250 | 10 | 10 | 400 | 350 | 330 | 1100.5 Nws | 900.5 ib | 1161 ib | 36 |
16 | 400 | 355 | 1100.5 Nws | 900.5 ib | 1161 ib | ||||
25 | 425 | 370 | 330 | 1113 | 900.5 ib | 1161 ib | 36 | ||
40 | 450 | 385 | 11 25.5 | 900.5 ib | 1161 ib | ||||
300 | 12 | 10 | 455 | 400 | 356 | 1273 ib | 10 45.5 | ib 1353 | 40 |
16 | 455 | 410 | 1273 ib | 10 45.5 | ib 1353 | ||||
25 | 485 ib | 430 | 356 | 1288 | 10 45.5 | ib 1353 | 40 | ||
40 | 515 | 450 | ib 1303 | 10 45.5 | ib 1353 | ||||
350 | 14 | 10 | 505 | 460 | 381 ib | 1484.5 ib | 1232 ib | 1585 ib | 40 |
16 | 520 | 470 ib | 1492 ib | 1232 ib | 1585 ib | ||||
400 | 16 | 10 | 565 ib | 515 | 406 | 1684.5 ib | 1402 ib | 1805 | 44 |
16 | 580 | 525 | 1692 ib | 1402 ib | 1805 | ||||
450 | 18 | 10 | 615 | 565 ib | 432 ib | 1868.5 ib | 1561 ib | 2065 ib | 50 |
16 | 640 | 585 ib | Xyoo 1881 | 1561 ib | 2065 ib | ||||
500 | 20 | 10 | 670 ib | 620 | 457 ib | 2068 ib | 1733 ib | 2238 ib | 50 |
16 | 715 ib | 650 | 2 090.5 | 1733 ib | 2238 ib | ||||
600 | 24 | 10 | 780 ua | 725 ib | 508 | 2390 ib | 2000 | 2605 ib | 50 |
16 | 840 ua | 770 ib | 24 20 | 2000 | 2605 ib | ||||