{"id":1380,"date":"2026-06-26T06:28:41","date_gmt":"2026-06-26T06:28:41","guid":{"rendered":"https:\/\/worm-and-worm-wheel.com\/?p=1380"},"modified":"2026-06-26T06:28:41","modified_gmt":"2026-06-26T06:28:41","slug":"worm-and-worm-wheel-for-bakery-oven-conveyors-and-dough-handling","status":"publish","type":"post","link":"https:\/\/worm-and-worm-wheel.com\/cs\/worm-and-worm-wheel-for-bakery-oven-conveyors-and-dough-handling\/","title":{"rendered":"\u0160nek a \u0161nekov\u00e9 kolo pro dopravn\u00edky peka\u0159sk\u00fdch pec\u00ed a manipulaci s t\u011bstem"},"content":{"rendered":"
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Korea Ever-Power \u00b7 Pr\u016fvodce aplika\u010dn\u00edm in\u017een\u00fdrstv\u00edm<\/p>\n

\u0160nek a \u0161nekov\u00e9 kolo pro dopravn\u00edky peka\u0159sk\u00fdch pec\u00ed a manipulaci s t\u011bstem<\/h1>\n

\u0160nekov\u00fd p\u0159evodov\u00fd p\u00e1r poh\u00e1n\u011bj\u00edc\u00ed dopravn\u00edk tunelov\u00e9 pece se nach\u00e1z\u00ed 400 mm od komory pracuj\u00edc\u00ed na 230 stupn\u00edch Celsia. S\u00e1lav\u00e9 teplo zah\u0159eje povrch sk\u0159\u00edn\u011b p\u0159evodovky na 85\u2013110 stup\u0148\u016f Celsia \u2013 co\u017e je v\u00fdrazn\u011b nad 80stup\u0148ovou hranic\u00ed standardn\u00edho miner\u00e1ln\u00edho maziva. B\u011bhem 6 t\u00fddn\u016f standardn\u00ed mazivo na z\u00e1vitech \u0161neku karbonizuje, t\u0159en\u00ed stoup\u00e1, zv\u011bt\u0161uje se v\u016fle a dopravn\u00edk se zastav\u00ed uprost\u0159ed pe\u010den\u00ed s 200 bochn\u00edky uvnit\u0159. V\u00fdb\u011br maziva je specifikac\u00ed, kter\u00e1 odd\u011bluje 5let\u00fd p\u00e1r od 6t\u00fddenn\u00ed poruchy.<\/p>\n

Promluvte si s technikem peka\u0159sk\u00e9ho pohonu \u2192<\/a><\/p>\n<\/div>\n

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Rychl\u00e1 odpov\u011b\u010f<\/div>\n

Dopravn\u00edky peka\u0159sk\u00fdch pec\u00ed, pohony kyn\u00e1ren a za\u0159\u00edzen\u00ed pro manipulaci s t\u011bstem umis\u0165uj\u00ed \u0161nekov\u00fd p\u0159evod do extern\u011b vyh\u0159\u00edvan\u00e9ho prost\u0159ed\u00ed \u2013 60 a\u017e 120 stup\u0148\u016f Celsia v d\u016fsledku s\u00e1lav\u00e9ho tepla pece \u2013 sp\u00ed\u0161e ne\u017e aby generovaly teplo uvnit\u0159 v d\u016fsledku neefektivity p\u0159evodu. Tato vn\u011bj\u0161\u00ed tepeln\u00e1 v\u00fdzva vy\u017eaduje mazivo dimenzovan\u00e9 pro skute\u010dnou teplotu sk\u0159\u00edn\u011b, nikoli pro referen\u010dn\u00ed teplotu uvedenou v katalogu. Matice pro v\u00fdb\u011br vysokoteplotn\u00edch maziv mapuje teplotu sk\u0159\u00edn\u011b se spr\u00e1vnou skupinou plastick\u00fdch maziv: standardn\u00ed lithiov\u00e9 mazivo do 80 stup\u0148\u016f Celsia (manipulace s t\u011bstem mimo pece), syntetick\u00e9 PAG pro 80 a\u017e 120 stup\u0148\u016f Celsia (pohony soused\u00edc\u00ed s pec\u00ed), silikonov\u00e9 mazivo pro 120 a\u017e 150 stup\u0148\u016f Celsia (pohony montovan\u00e9 v peci) a PFPE pro teploty nad 150 stup\u0148\u016f Celsia (mechanismy uvnit\u0159 pece). Tepeln\u00e1 rozta\u017enost p\u0159i zv\u00fd\u0161en\u00e9 teplot\u011b posouv\u00e1 osovou vzd\u00e1lenost \u0161nekov\u00e9ho p\u0159evodu o 0,03 a\u017e 0,08 mm na ka\u017ed\u00fdch 50 stup\u0148\u016f Celsia \u2013 co\u017e je dostate\u010dn\u00e9 ke zm\u011bn\u011b v\u016fle a kontaktn\u00edho vzoru. V pek\u00e1rn\u00e1ch se tak\u00e9 vyskytuje mou\u010dn\u00fd prach (ho\u0159lav\u00fd \u2013 potenci\u00e1ln\u011b ATEX z\u00f3na 22) a pro v\u0161echny pohony ve v\u00fdrobn\u00ed z\u00f3n\u011b je vy\u017eadov\u00e1no mazivo bezpe\u010dn\u00e9 pro potravin\u00e1\u0159stv\u00ed (NSF H1).<\/p>\n<\/div>\n

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Pro\u010d je peka\u0159sk\u00e9 za\u0159\u00edzen\u00ed jinou tepelnou v\u00fdzvou ne\u017e jin\u00e9 aplikace<\/h2>\n
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Ve v\u011bt\u0161in\u011b aplikac\u00ed \u0161nekov\u00fdch p\u0159evod\u016f teplo proud\u00ed ven: dvojice ozuben\u00fdch kol generuje t\u0159ec\u00ed teplo a sk\u0159\u00ed\u0148 ho odv\u00e1d\u00ed do okol\u00ed. Dvojice ozuben\u00fdch kol je zdrojem tepla; okol\u00ed je chladic\u00edm prost\u0159edkem. V aplikac\u00edch peka\u0159sk\u00fdch pec\u00ed je tento vztah obr\u00e1cen\u00fd: pec je zdrojem tepla a dvojice \u0161nekov\u00fdch p\u0159evod\u016f je p\u0159\u00edjemcem vn\u011bj\u0161\u00edho s\u00e1lav\u00e9ho a konvek\u010dn\u00edho tepla. Dvojice ozuben\u00fdch kol absorbuje teplo z okol\u00ed, sp\u00ed\u0161e ne\u017e aby ho generovala.<\/p>\n

Toto rozli\u0161en\u00ed je d\u016fle\u017eit\u00e9, proto\u017ee standardn\u00ed tepeln\u00fd model (\u010dl\u00e1nek A08, eskal\u00e1tor: T_sk\u0159\u00edn\u011b = T_okol\u00ed + P_teplo \/ (h \u00d7 A)) p\u0159edpokl\u00e1d\u00e1, \u017ee teplota okol\u00ed je konstantn\u00ed a ni\u017e\u0161\u00ed ne\u017e teplota sk\u0159\u00edn\u011b. V pek\u00e1rn\u011b m\u016f\u017ee m\u00edt teplota okol\u00ed kolem sk\u0159\u00edn\u011b p\u0159evodovky 60 a\u017e 120 stup\u0148\u016f Celsia \u2013 a teplota sk\u0159\u00edn\u011b se rovn\u00e1 nebo je vy\u0161\u0161\u00ed ne\u017e teplota okol\u00ed, proto\u017ee sk\u0159\u00ed\u0148 nem\u016f\u017ee odv\u00e1d\u011bt teplo do vzduchu, kter\u00fd je ji\u017e hork\u00fd.<\/p>\n<\/div>\n

\"konstrukce<\/div>\n<\/div>\n

Praktick\u00fd d\u016fsledek: \u0161nekov\u00fd p\u0159evod s jmenovit\u00fdm kroutic\u00edm momentem 2 000 N\u00b7m p\u0159i okoln\u00ed teplot\u011b 20 stup\u0148\u016f Celsia m\u016f\u017ee p\u0159i okoln\u00ed teplot\u011b 100 stup\u0148\u016f Celsia dodat pouze 1 400 a\u017e 1 600 N\u00b7m, proto\u017ee zv\u00fd\u0161en\u00e1 teplota sni\u017euje viskozitu maziva, zvy\u0161uje sou\u010dinitel t\u0159en\u00ed, sni\u017euje mez kluzu bronzu a urychluje tepelnou degradaci plastick\u00e9ho maziva. Faktor sn\u00ed\u017een\u00ed v\u00fdkonu \u0161nekov\u00e9ho p\u0159evodu pro zv\u00fd\u0161enou okoln\u00ed teplotu je obvykle 15 a\u017e 30 procent na ka\u017ed\u00fdch 50 stup\u0148\u016f Celsia nad katalogovou referenc\u00ed (obvykle 20 stup\u0148\u016f Celsia). Toto sn\u00ed\u017een\u00ed v\u00fdkonu se ve specifikaci peka\u0159sk\u00e9ho za\u0159\u00edzen\u00ed \u010dasto p\u0159ehl\u00ed\u017e\u00ed \u2013 \u0161nekov\u00fd p\u0159evod se vyb\u00edr\u00e1 s pln\u00fdm katalogov\u00fdm v\u00fdkonem a pot\u00e9 se umis\u0165uje vedle pece o teplot\u011b 230 stup\u0148\u016f Celsia, kde od prvn\u00edho dne pracuje na 70 a\u017e 80 procentech sv\u00e9ho jmenovit\u00e9ho v\u00fdkonu.<\/p>\n

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Matice pro v\u00fdb\u011br vysokoteplotn\u00edho maziva \u2013 od teploty sk\u0159\u00edn\u011b a\u017e po stupe\u0148 plastick\u00e9ho maziva<\/h2>\n

V\u00fdb\u011br maziva pro p\u00e1ry \u0161nekov\u00fdch p\u0159evod\u016f v pek\u00e1rn\u00e1ch z\u00e1vis\u00ed na jednom m\u011b\u0159en\u00ed: ust\u00e1len\u00e9 teplot\u011b povrchu sk\u0159\u00edn\u011b b\u011bhem provozu pece. Tato teplota ur\u010duje, kter\u00e1 skupina plastick\u00fdch maziv p\u0159e\u017eije tepeln\u00e9 vystaven\u00ed. N\u00ed\u017ee uveden\u00e1 matice mapuje teplotn\u00ed rozsahy sk\u0159\u00edn\u011b pro spr\u00e1vn\u00e9 mazivo s uveden\u00edm variant spl\u0148uj\u00edc\u00edch normu pro bezpe\u010dnost potravin (NSF H1) pro ka\u017edou z nich.<\/p>\n

\n\n\n\n\n\n\n\n\n
Teplota pouzdra<\/th>\nRodina tuk\u016f<\/th>\nVarianta NSF H1<\/th>\nInterval op\u011btovn\u00e9ho maz\u00e1n\u00ed<\/th>\nCena za kg<\/th>\nTypick\u00e1 pozice v pek\u00e1rn\u011b<\/th>\n<\/tr>\n<\/thead>\n
Pod 80 \u00b0C<\/td>\nStandardn\u00ed lithn\u00fd komplex EP<\/td>\nDostupn\u00e9 (b\u011b\u017en\u00e9)<\/td>\n12 m\u011bs\u00edc\u016f<\/td>\n8 \u2013 15 USD<\/td>\nD\u011bli\u010d t\u011bsta, formova\u010d, kyn\u00e1rna (mimo troubu)<\/td>\n<\/tr>\n
80 \u2013 120 \u00b0C<\/td>\nSyntetick\u00fd PAG nebo PAO<\/td>\nDostupn\u00e9 (uve\u010fte H1 na b\u00e1zi PAG)<\/td>\n6 m\u011bs\u00edc\u016f<\/td>\n25 \u2013 50 USD<\/td>\nVstupn\u00ed\/v\u00fdstupn\u00ed dopravn\u00edk tunelov\u00e9 pece, chladic\u00ed spir\u00e1la p\u0159il\u00e9haj\u00edc\u00ed k peci<\/td>\n<\/tr>\n
120 \u2013 150 \u00b0C<\/td>\nSilikonov\u00e9 mazivo (na b\u00e1zi PDMS)<\/td>\nOmezen\u00e1 dostupnost (ov\u011b\u0159te si vlastnosti EP)<\/td>\n3 m\u011bs\u00edce<\/td>\n60 \u2013 120 USD<\/td>\n\u0158emenov\u00fd pohon namontovan\u00fd v troub\u011b, mechanismus pro odstra\u0148ov\u00e1n\u00ed \u0161\u0148\u016fr<\/td>\n<\/tr>\n
Nad 150 \u00b0C<\/td>\nPFPE (perfluorpoly\u00e9ter)<\/td>\nDostupn\u00e9 (velmi omezen\u00e9 SKU)<\/td>\n6 m\u011bs\u00edc\u016f<\/td>\n250 \u2013 600 USD<\/td>\nPohon klapky uvnit\u0159 pece, index\u00e1tor kamenn\u00e9ho ohni\u0161t\u011b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

N\u00e1r\u016fst cen je strm\u00fd: PFPE s cenou 250 a\u017e 600 USD za kg je 20 a\u017e 40kr\u00e1t dra\u017e\u0161\u00ed ne\u017e standardn\u00ed lithiov\u00e9 mazivo. Mno\u017estv\u00ed maziva na n\u00e1pl\u0148 \u0161nekov\u00e9ho p\u0159evodu je v\u0161ak mal\u00e9 (50 a\u017e 200 gram\u016f), tak\u017ee absolutn\u00ed n\u00e1klady na n\u00e1pl\u0148 jsou 12 a\u017e 120 USD pro PFPE oproti 0,50 a\u017e 3 USD pro standardn\u00ed mazivo \u2013 co\u017e je sice rozumn\u00e9, ale nikoli z\u00e1vratn\u00e9 pro za\u0159\u00edzen\u00ed chr\u00e1n\u00edc\u00ed pe\u010divo v hodnot\u011b tis\u00edc\u016f dolar\u016f na jedno napln\u011bn\u00ed trouby.<\/p>\n

Pozor na silikonov\u00e9 mazivo.<\/strong> Silikonov\u00e9 mazivo sn\u00e1\u0161\u00ed teplotu, ale m\u00e1 v\u00fdrazn\u011b ni\u017e\u0161\u00ed odolnost proti extr\u00e9mn\u00edmu tlaku (EP) ne\u017e lithiov\u00e9 nebo PAG mazivo. P\u0159i vysok\u00e9m zat\u00ed\u017een\u00ed, kter\u00e9 je typick\u00e9 pro velk\u00e9 dopravn\u00edky v tunelov\u00fdch pec\u00edch (v\u00fdstupn\u00ed to\u010div\u00fd moment 200 a\u017e 500 N\u00b7m), nemus\u00ed silikonov\u00e9 mazivo udr\u017eovat mezn\u00ed mazac\u00ed film pot\u0159ebn\u00fd k zabr\u00e1n\u011bn\u00ed od\u00edr\u00e1n\u00ed bronzu o ocel. U p\u00e1r\u016f \u0161nekov\u00fdch kol s v\u00fdstupn\u00edm momentem nad 100 N\u00b7m v rozsahu 120 a\u017e 150 stup\u0148\u016f syntetick\u00e9 PAG s vy\u0161\u0161\u00ed viskozitou z\u00e1kladov\u00e9ho oleje (ISO VG 680 nebo 1000) \u010dasto p\u0159ekon\u00e1v\u00e1 silikon i p\u0159es nomin\u00e1ln\u011b ni\u017e\u0161\u00ed teplotn\u00ed t\u0159\u00eddu \u2013 vynikaj\u00edc\u00ed ochrana EP filmem kompenzuje m\u00edrn\u011b sn\u00ed\u017eenou tepelnou rezervu. P\u0159ed schv\u00e1len\u00edm v\u00fdrobn\u00ed specifikace otestujte specifick\u00e9 mazivo p\u0159i zat\u00ed\u017een\u00ed a teplot\u011b na p\u00e1ru \u0161nekov\u00fdch kol.<\/p>\n

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Tepeln\u00e1 rozta\u017enost \u2013 jak teplo v peci posouv\u00e1 osovou vzd\u00e1lenost a v\u016fli<\/h2>\n

\"vliv<\/p>\n

Kdy\u017e se p\u00e1r \u0161nekov\u00fdch kol zah\u0159eje z 20 stup\u0148\u016f Celsia (mont\u00e1\u017en\u00ed teplota) na 100 stup\u0148\u016f Celsia (provozn\u00ed teplota v bl\u00edzkosti pece), sk\u0159\u00ed\u0148 \u0161nekov\u00e9ho kola a h\u0159\u00eddele se rozt\u00e1hnou. Ocel a litina maj\u00ed koeficient tepeln\u00e9 rozta\u017enosti p\u0159ibli\u017en\u011b 11 a\u017e 12 \u00b5m na metr na stupe\u0148 Celsia. U p\u00e1ru \u0161nekov\u00fdch kol s rozte\u010d\u00ed 100 mm a n\u00e1r\u016fstem teploty o 80 stup\u0148\u016f se rozte\u010d zv\u011bt\u0161\u00ed p\u0159ibli\u017en\u011b o 0,09 a\u017e 0,10 mm. Bronz se roztahuje rychleji (18 \u00b5m\/m\/\u00b0C), tak\u017ee bronzov\u00e9 kolo se zv\u011bt\u0161uje v\u00edce ne\u017e ocelov\u00fd \u0161nek \u2013 co\u017e d\u00e1le otev\u00edr\u00e1 z\u00e1b\u011br.<\/p>\n

Kombinovan\u00fd efekt: u typick\u00e9ho p\u00e1ru \u0161nekov\u00fdch kol peka\u0159sk\u00e9 velikosti (rozte\u010d 80 a\u017e 125 mm) se v\u016fle zvy\u0161uje zhruba o 0,03 a\u017e 0,08 mm na ka\u017ed\u00fdch 50 stup\u0148\u016f Celsia, co se teploty zv\u00fd\u0161\u00ed. Tato tepeln\u00e1 v\u016fle je reverzibiln\u00ed \u2013 miz\u00ed, kdy\u017e se p\u00e1r ochlad\u00ed na mont\u00e1\u017en\u00ed teplotu. B\u011bhem provozu v\u0161ak zv\u00fd\u0161en\u00e1 v\u016fle m\u011bn\u00ed kontaktn\u00ed vzor \u0161nekov\u00e9ho kola (posune kontaktn\u00ed p\u00e1s sm\u011brem ke \u0161pi\u010dk\u00e1m zub\u016f) a zvy\u0161uje hluk p\u0159i chodu. U peka\u0159sk\u00fdch za\u0159\u00edzen\u00ed, kde se p\u00e1r denn\u011b zah\u0159\u00edv\u00e1 a ochlazuje (pec zapnut\u00e1 b\u011bhem pe\u010den\u00ed, p\u0159es noc vypnut\u00e1), denn\u00ed cyklus v\u016fle zat\u011b\u017euje kontaktn\u00ed z\u00f3nu zub\u016f jinak ne\u017e u p\u00e1ru b\u011b\u017e\u00edc\u00edho p\u0159i konstantn\u00ed teplot\u011b.<\/p>\n

Zm\u00edrn\u011bn\u00ed n\u00e1vrhu.<\/strong> Ur\u010dete po\u010d\u00e1te\u010dn\u00ed v\u016fli na t\u011bsn\u00e9m konci toleran\u010dn\u00edho p\u00e1sma (sp\u00ed\u0161e ne\u017e v nomin\u00e1ln\u00edm st\u0159edu) tak, aby tepeln\u00e1 rozta\u017enost otev\u0159ela z\u00e1b\u011br na nomin\u00e1ln\u00ed provozn\u00ed v\u016fli p\u0159i teplot\u011b pece. U dvojice ozuben\u00fdch kol ur\u010den\u00fdch pro provoz p\u0159i teplot\u011b 100 stup\u0148\u016f Celsia nastavte v\u016fli v sestav\u011b o 0,05 a\u017e 0,08 mm t\u011bsn\u011bj\u0161\u00ed, ne\u017e je standardn\u00ed katalogov\u00e1 specifikace. Dvojice ozuben\u00fdch kol se bude p\u0159i pokojov\u00e9 teplot\u011b sestavovat m\u00edrn\u011b tuze, ale po zah\u0159\u00e1t\u00ed na provozn\u00ed teplotu bude b\u011b\u017eet s zam\u00fd\u0161lenou v\u016fl\u00ed. Tento p\u0159\u00edstup vy\u017eaduje, aby dodavatel dvojice ozuben\u00fdch kol znal provozn\u00ed teplotu \u2013 co\u017e znamen\u00e1, \u017ee konstrukt\u00e9r peka\u0159sk\u00e9ho za\u0159\u00edzen\u00ed mus\u00ed sd\u011blit tepeln\u00e9 prost\u0159ed\u00ed, nejen to\u010div\u00fd moment a p\u0159evod.<\/p>\n

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Pozn\u00e1mka k in\u017een\u00fdrsk\u00e9mu stolu<\/div>\n

Korejsk\u00e1 pr\u016fmyslov\u00e1 pek\u00e1rna instalovala novou 25metrovou tunelovou pec pro v\u00fdrobu sendvi\u010dov\u00e9ho chleba. Pec pracovala p\u0159i teplot\u011b 210 stup\u0148\u016f Celsia. Pohon dopravn\u00edku pece se nach\u00e1zel na v\u00fdstupn\u00edm konci, 400 mm od st\u011bny pece, bez tepeln\u00e9ho st\u00edn\u011bn\u00ed. Specifikace \u0161nekov\u00e9ho p\u0159evodu: jednochod\u00fd, modul 4, rozte\u010d 100 mm, p\u0159evodov\u00fd pom\u011br 30:1 \u2013 napln\u011bn\u00fd standardn\u00edm miner\u00e1ln\u00edm lithiov\u00fdm mazivem (NLGI 2, maxim\u00e1ln\u00ed trval\u00fd provoz 80 stup\u0148\u016f Celsia). Teplota povrchu sk\u0159\u00edn\u011b m\u011b\u0159en\u00e1 t\u0159et\u00ed den v\u00fdroby: 95 stup\u0148\u016f Celsia. Standardn\u00ed mazivo za\u010dalo oxidovat b\u011bhem 2 t\u00fddn\u016f \u2013 na z\u00e1vitech \u0161neku se vytvo\u0159ila hn\u011bd\u00e1 krusta viditeln\u00e1 skrz pr\u016fzor oleje. Do 6. t\u00fddne mazivo zuhelnat\u011blo, koeficient t\u0159en\u00ed se zhruba zdvojn\u00e1sobil, proud motoru se zv\u00fd\u0161il o 40 procent a dopravn\u00edk se zastavil s 200 bochn\u00edky v komo\u0159e pece. Nouzov\u00e1 oprava: propl\u00e1chnut\u00ed sk\u0159\u00edn\u011b rozpou\u0161t\u011bdlem, dopln\u011bn\u00ed syntetick\u00fdm mazivem PAG H1 (dimenzion\u00e1ln\u00edm na 120 stup\u0148\u016f Celsia). N\u00e1klady na v\u00fdm\u011bnu maziva: 180 USD (v\u010detn\u011b rozpou\u0161t\u011bdla, maziva PAG a 3 hodin pr\u00e1ce technika). N\u00e1klady na 200 sp\u00e1len\u00fdch bochn\u00edk\u016f plus 4 hodiny ztracen\u00e9 v\u00fdroby: p\u0159ibli\u017en\u011b 3 200 USD. Celkov\u00e9 n\u00e1klady na poruchu \u2013 3 380 USD \u2013 pramenily z chyby p\u0159i v\u00fdb\u011bru maziva, jej\u00ed\u017e prevence by ve f\u00e1zi specifikace st\u00e1la 35 USD (rozd\u00edl v cen\u011b mezi standardn\u00edm miner\u00e1ln\u00edm mazivem a mazivem PAG H1 pro jednu n\u00e1pl\u0148 \u0161nekov\u00e9ho p\u0159evodu). Pek\u00e1rna n\u00e1sledn\u011b nainstalovala mezi st\u011bnu pece a sk\u0159\u00ed\u0148 p\u0159evodovky tepeln\u00fd \u0161t\u00edt z nerezov\u00e9 oceli, \u010d\u00edm\u017e se sn\u00ed\u017eila teplota sk\u0159\u00edn\u011b na 72 stup\u0148\u016f Celsia \u2013 v r\u00e1mci standardn\u00edho rozsahu maziva. Tepeln\u00fd \u0161t\u00edt st\u00e1l 85 USD. Kombinovan\u00e9 n\u00e1klady na prevenci: celkem 120 USD oproti 3 380 USD n\u00e1klad\u016fm na opravu.<\/p>\n<\/div>\n

<\/p>\n

Klasifikace potravin\u00e1\u0159sk\u00fdch z\u00f3n pro \u0161nekov\u00e1 ozuben\u00e1 kola a \u00favahy o mou\u010dn\u00e9m prachu<\/h2>\n
\n
\"Ut\u011bsn\u011bn\u00e9<\/div>\n
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Prost\u0159ed\u00ed peka\u0159sk\u00e9 v\u00fdroby kombinuje dva regula\u010dn\u00ed rozm\u011bry: bezpe\u010dnost potravin (mazivo NSF H1 pro pohony ve v\u00fdrobn\u00ed z\u00f3n\u011b) a ho\u0159lav\u00fd prach (prach z mouky m\u016f\u017ee vytv\u00e1\u0159et v\u00fdbu\u0161n\u00e9 prost\u0159ed\u00ed nad minim\u00e1ln\u00ed v\u00fdbu\u0161nou koncentrac\u00ed p\u0159ibli\u017en\u011b 60 g\/m\u00b3).<\/p>\n

Ne v\u0161echny p\u00e1ry \u0161nekov\u00fdch p\u0159evod\u016f v pek\u00e1rn\u00e1ch vy\u017eaduj\u00ed specifikaci pro potravin\u00e1\u0159skou kvalitu. Pohony \u0161nekov\u00fdch p\u0159evod\u016f p\u0159ed pe\u010den\u00edm (m\u00edcha\u010dka t\u011bsta, d\u011bli\u010dka, formovac\u00ed lis, kyn\u00e1rna) se nach\u00e1zej\u00ed v potravin\u00e1\u0159sk\u00e9 z\u00f3n\u011b a vy\u017eaduj\u00ed certifikaci NSF H1. Pohon dopravn\u00edku pece a pohon chladic\u00edho dopravn\u00edku se obvykle nach\u00e1zej\u00ed za pe\u010d\u00edc\u00ed z\u00f3nou \u2013 v\u00fdrobek se pe\u010de a nedot\u00fdk\u00e1 se hnac\u00edho mechanismu. Tyto pohony mohou pou\u017e\u00edvat standardn\u00ed pr\u016fmyslov\u00e9 mazivo, pokud posouzen\u00ed HACCP ov\u011b\u0159\u00ed, \u017ee nedoch\u00e1z\u00ed k \u017e\u00e1dn\u00e9 kontamina\u010dn\u00ed cest\u011b.<\/p>\n<\/div>\n<\/div>\n

\n
\n
P\u0159edpe\u010d\u00edc\u00ed trouba (z\u00f3na pro pe\u010den\u00ed)<\/div>\n

Pohony:<\/strong> Hn\u011bta\u010d t\u011bsta, d\u011bli\u010d, formova\u010d, kyn\u00e1rn\u00ed dopravn\u00edk.
\nMazivo:<\/strong> Povinn\u00e1 certifikace NSF H1 (riziko kontaktu s t\u011bstem).
\nTeplota:<\/strong> Okoln\u00ed teplota 20\u201335 \u00b0C (posta\u010d\u00ed standardn\u00ed mazivo).
\nPrach:<\/strong> P\u0159\u00edtomnost mou\u010dn\u00e9ho prachu \u2013 ut\u011bsn\u011bn\u00e9 pouzdro, ATEX z\u00f3na 22, pokud koncentrace p\u0159ekro\u010d\u00ed LEL. Povrch pouzdra nejisk\u0159iv\u00fd.<\/p>\n<\/div>\n

\n
Z\u00f3na trouby (vysok\u00e1 teplota)<\/div>\n

Pohony:<\/strong> Dopravn\u00edk pro tunelovou pec, pohon s\u00ed\u0165ov\u00fdm \u0159emenem, d\u011blic\u00ed \u00fastroj\u00ed pro kamennou desku.
\nMazivo:<\/strong> PAG, silikon nebo PFPE \u2013 vyb\u00edr\u00e1 se podle teploty pouzdra. NSF H1 je preferov\u00e1n, ale ne v\u017edy je povinn\u00fd (z\u00f3na po vyp\u00e1len\u00ed).
\nTeplota:<\/strong> Teplota pouzdra 60\u2013150 \u00b0C v z\u00e1vislosti na bl\u00edzkosti a st\u00edn\u011bn\u00ed.
\nPrach:<\/strong> Minim\u00e1ln\u00ed mno\u017estv\u00ed mou\u010dn\u00e9ho prachu (spaluje se v z\u00f3n\u011b pece). ATEX obvykle nen\u00ed vy\u017eadov\u00e1n.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

T\u0159i p\u0159\u00edpady specifikace p\u00e1r\u016f \u0161nekov\u00fdch p\u0159evod\u016f v pek\u00e1rensk\u00e9 peci<\/h2>\n

\"\u0160nekov\u00e9<\/p>\n

P\u0159\u00edpad 1 \u2013 Korejsk\u00e1 pr\u016fmyslov\u00e1 pek\u00e1rna: 25m tunelov\u00e1 pec, chl\u00e9b, tepeln\u011b st\u00edn\u011bn\u00fd pohon<\/h3>\n

Korejsk\u00e1 pr\u016fmyslov\u00e1 pek\u00e1rna (30 000 bochn\u00edk\u016f denn\u011b) specifikovala \u0161nekov\u00fd p\u0159evod pro pohon v\u00fdstupn\u00edho dopravn\u00edku 25metrov\u00e9 plynov\u00e9 tunelov\u00e9 pece s teplotou komory 210 stup\u0148\u016f Celsia. Pohon byl um\u00edst\u011bn na v\u00fdstupu z pece, p\u016fvodn\u011b 400 mm od st\u011bny pece \u2013 teplota sk\u0159\u00edn\u011b m\u011b\u0159ena p\u0159i 95 stupn\u00edch Celsia (viz pozn\u00e1mka Engineering Desk). Po instalaci tepeln\u00e9ho \u0161t\u00edtu z nerezov\u00e9 oceli (85 USD) se teplota sk\u0159\u00edn\u011b sn\u00ed\u017eila na 72 stup\u0148\u016f Celsia. Kone\u010dn\u00e1 specifikace \u0161nekov\u00e9ho p\u0159evodu: jednochod\u00fd, modul 4, rozte\u010d 100 mm, p\u0159evodov\u00fd pom\u011br 30:1. Motor: 2,2 kW, 1 450 ot\/min. V\u00fdstupn\u00ed to\u010div\u00fd moment: 180 N\u00b7m (nap\u011bt\u00ed \u0159emenu + t\u0159en\u00ed hmotnosti bochn\u00edku). Mazivo: syntetick\u00e9 PAG NSF H1 (jmenovit\u00e9 na 120 stup\u0148\u016f Celsia \u2013 poskytuje rezervu 48 stup\u0148\u016f nad provozn\u00ed teplotou 72 stup\u0148\u016f). Interval mezi maz\u00e1n\u00edm: 12 m\u011bs\u00edc\u016f (upraveno Arrheniusovou metodou na 72 stup\u0148\u016f Celsia od referen\u010dn\u00ed teploty 40 stup\u0148\u016f). Materi\u00e1l: \u0160nek AISI 304, kolo z fosforov\u00e9ho bronzu. T\u011bsn\u011bn\u00ed: FKM (Viton) \u2013 odoln\u00e9 v\u016f\u010di vysok\u00fdm teplot\u00e1m. Cena za p\u00e1r: 195 USD. Celkov\u00e9 n\u00e1klady na pohon pece (p\u00e1r + tepeln\u00fd \u0161t\u00edt + mazivo PAG): 315 USD. Ro\u010dn\u00ed produkce chleba v t\u00e9to peci: velkoobchodn\u00ed hodnota p\u0159ibli\u017en\u011b 1,8 milionu USD.<\/p>\n

P\u0159\u00edpad 2 \u2013 Japonsk\u00e1 tov\u00e1rna na instantn\u00ed ramen: trouba na bleskov\u00e9 sma\u017een\u00ed, kryt 160 \u00b0C, silikonov\u00e9 mazivo<\/h3>\n

Japonsk\u00fd v\u00fdrobce instantn\u00edch ramen specifikoval \u0161nekov\u00fd p\u0159evod pro pohon dopravn\u00edku uvnit\u0159 fritovac\u00ed pece, kter\u00e1 sma\u017e\u00ed nudlov\u00e9 bloky p\u0159i teplot\u011b oleje 150 stup\u0148\u016f Celsia. Pohon byl uvnit\u0159 pece \u2013 namontov\u00e1n na r\u00e1mu pece ve vyh\u0159\u00edvan\u00e9 komo\u0159e. Nebylo mo\u017en\u00e9 \u017e\u00e1dn\u00e9 tepeln\u00e9 st\u00edn\u011bn\u00ed. Teplota pouzdra byla nam\u011b\u0159ena p\u0159i 135 stupn\u00edch Celsia b\u011bhem ust\u00e1len\u00e9ho provozu. Standardn\u00ed mazivo PAG (s jmenovitou teplotou 120 stup\u0148\u016f Celsia) by p\u0159i 135 stupn\u00edch Celsia selhalo b\u011bhem n\u011bkolika m\u011bs\u00edc\u016f. Specifikace: jednor\u00e1zov\u00e9, modul 3, rozte\u010d 80 mm, pom\u011br 25:1. Mazivo: vysokoteplotn\u00ed mazivo na b\u00e1zi silikonu, ur\u010den\u00e9 pro 180 stup\u0148\u016f Celsia, registrov\u00e1no NSF H1. Silikonov\u00e9 mazivo m\u011blo ni\u017e\u0161\u00ed EP vlastnosti ne\u017e PAG \u2013 ov\u011b\u0159eno jako p\u0159ijateln\u00e9 p\u0159i v\u00fdstupn\u00edm to\u010div\u00e9m momentu 85 N\u00b7m (co\u017e je v r\u00e1mci sn\u00ed\u017een\u00e9 kapacity EP filmu). Materi\u00e1l: \u0161nek AISI 316L (st\u0159\u00edkance fritovac\u00edho oleje jsou \u010dasem kysel\u00e9), kolo z hlin\u00edkov\u00e9ho bronzu. Interval mezi maz\u00e1n\u00edm: 3 m\u011bs\u00edce (silikon se degraduje rychleji ne\u017e PAG v d\u016fsledku t\u011bkavosti z\u00e1kladov\u00e9ho oleje p\u0159i trvale vysok\u00e9 teplot\u011b). Cena za p\u00e1r: 165 USD. Cena silikonov\u00e9ho plastick\u00e9ho maziva H1 za n\u00e1pl\u0148: 18 USD. Ro\u010dn\u00ed \u00fadr\u017eba plastick\u00e9ho maziva (4 n\u00e1pln\u011b): 72 USD. Proch\u00e1zet vysokoteplotn\u00ed \u0161nekov\u00fd reduktor<\/a> mo\u017enosti ur\u010den\u00e9 pro peka\u0159sk\u00e9 aplikace v bl\u00edzkosti pece i uvnit\u0159 pece.<\/p>\n

P\u0159\u00edpad 3 \u2013 Vietnamsk\u00e1 tov\u00e1rna na bagety: nakl\u00e1dac\u00ed pec s podlahov\u00fdm nakl\u00e1d\u00e1n\u00edm, optimalizovan\u00e1 cena, st\u0159edn\u00ed teplota<\/h3>\n

Vietnamsk\u00e1 tov\u00e1rna na bagety specifikovala \u0161nekov\u00e9 p\u0159evody pro mechanismy nakl\u00e1d\u00e1n\u00ed do dvoupatrov\u00fdch pec\u00ed, kter\u00e9 zasouvaj\u00ed plechy na t\u011bsto do t\u0159\u00edpatrov\u00e9 pe\u010d\u00edc\u00ed pece p\u0159i teplot\u011b 240 stup\u0148\u016f Celsia. Pohon naklada\u010de byl um\u00edst\u011bn 1,2 metru od p\u0159edn\u00ed strany pece, za cihlovou tepelnou st\u011bnou. Teplota pouzdra: 58 stup\u0148\u016f Celsia \u2013 pod standardn\u00edm limitem maziva 80 stup\u0148\u016f. To umo\u017enilo pou\u017eit\u00ed standardn\u00edho lithn\u00e9ho komplexn\u00edho maziva NSF H1 \u2013 \u010d\u00edm\u017e se zabr\u00e1nilo n\u00e1kladov\u00e9 p\u0159ir\u00e1\u017ece na syntetick\u00fd PAG nebo silikon. \u0160nekov\u00fd p\u0159evod: jednostup\u0148ov\u00fd, modul 2,5, rozte\u010d 63 mm, pom\u011br 20:1. V\u00fdstupn\u00ed to\u010div\u00fd moment: 55 N\u00b7m (hmotnost plechu plus kluzn\u00e9 t\u0159en\u00ed na kamenn\u00e9m et\u00e1\u017ei). Motor: 0,75 kW. Materi\u00e1l: pozinkovan\u00fd \u0161nek z uhl\u00edkov\u00e9 oceli, kolo z fosforov\u00e9ho bronzu. Interval mezimaz\u00e1n\u00ed: 12 m\u011bs\u00edc\u016f (standardn\u00ed pl\u00e1n p\u0159i 58 stupn\u00edch Celsia). Cena za p\u00e1r: 72 USD. P\u0159\u00edpadov\u00e1 studie ukazuje, \u017ee ne v\u0161echny \u0161nekov\u00e9 p\u0159evody v pek\u00e1rn\u00e1ch pot\u0159ebuj\u00ed mazivo pro vysok\u00e9 teploty \u2013 rozhodnut\u00ed z\u00e1vis\u00ed na skute\u010dn\u00e9 teplot\u011b pouzdra, kter\u00e1 je ur\u010dena vzd\u00e1lenost\u00ed od pece a p\u0159\u00edpadn\u00fdm tepeln\u00fdm st\u00edn\u011bn\u00edm. 30sekundov\u00e9 m\u011b\u0159en\u00ed teploty infra\u010derven\u00fdm teplom\u011brem b\u011bhem provozu trouby poskytuje data, kter\u00e1 ur\u010duj\u00ed, zda je pot\u0159eba standardn\u00ed nebo syntetick\u00e9 mazivo.<\/p>\n

<\/p>\n

\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n
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\nOt\u00e1zka: Jak zm\u011b\u0159\u00edm teplotu pouzdra pro v\u00fdb\u011br maziva?<\/summary>\n

B\u011bhem ust\u00e1len\u00e9ho provozu pece (alespo\u0148 2 hodiny po spu\u0161t\u011bn\u00ed pece, aby se dos\u00e1hlo pln\u00e9 tepeln\u00e9 rovnov\u00e1hy) pou\u017e\u00edvejte infra\u010derven\u00fd teplom\u011br nam\u00ed\u0159en\u00fd na povrch sk\u0159\u00edn\u011b \u0161nekov\u00e9ho p\u0159evodu. M\u011b\u0159en\u00ed prob\u00edh\u00e1 v bod\u011b nejbl\u00ed\u017ee peci. Zaznamenejte teplotu v nejteplej\u0161\u00ed v\u00fdrobn\u00ed den (letn\u00ed teplota okol\u00ed p\u0159isp\u00edv\u00e1 k s\u00e1lav\u00e9mu teplu pece). Toto m\u011b\u0159en\u00ed v nejhor\u0161\u00edm p\u0159\u00edpad\u011b ur\u010duje skupinu maziv. Pokud sk\u0159\u00ed\u0148 je\u0161t\u011b nen\u00ed nainstalov\u00e1na (nov\u00e1 konstrukce za\u0159\u00edzen\u00ed), odhadn\u011bte teplotu pomoc\u00ed tepeln\u00e9 simulace nebo nainstalujte do\u010dasn\u00fd termo\u010dl\u00e1nek b\u011bhem uveden\u00ed do provozu p\u0159ed specifikac\u00ed v\u00fdrobn\u00edho maziva. Nikdy nep\u0159edpokl\u00e1dejte teplotu sk\u0159\u00edn\u011b \u0161nekov\u00e9ho p\u0159evodu na z\u00e1klad\u011b teploty pece \u2013 vztah z\u00e1vis\u00ed na vzd\u00e1lenosti, st\u00edn\u011bn\u00ed, izolaci a proud\u011bn\u00ed vzduchu, kter\u00e9 se li\u0161\u00ed v z\u00e1vislosti na instalaci.<\/p>\n<\/details>\n

\nOt\u00e1zka: M\u016f\u017ee tepeln\u00fd \u0161t\u00edt vy\u0159e\u0161it probl\u00e9m s teplotou m\u00edsto drah\u00e9ho maziva?<\/summary>\n

V mnoha p\u0159\u00edpadech ano \u2013 a je to cenov\u011b nejv\u00fdhodn\u011bj\u0161\u00ed \u0159e\u0161en\u00ed. Le\u0161t\u011bn\u00fd tepeln\u00fd reflektor z nerezov\u00e9 oceli mezi st\u011bnou pece a sk\u0159\u00edn\u00ed \u0161nekov\u00e9ho p\u0159evodu, um\u00edst\u011bn\u00fd mezi st\u011bnou pece a sk\u0159\u00edn\u00ed p\u0159evodu, odr\u00e1\u017e\u00ed 70 a\u017e 90 procent s\u00e1lav\u00e9ho tepla. 1mm le\u0161t\u011bn\u00fd plech z nerezov\u00e9 oceli 304 na\u0159ezan\u00fd na m\u00edru a p\u0159i\u0161roubovan\u00fd k r\u00e1mu pece stoj\u00ed 50 a\u017e 150 USD a obvykle sni\u017euje teplotu sk\u0159\u00edn\u011b o 20 a\u017e 40 stup\u0148\u016f Celsia. Toto sn\u00ed\u017een\u00ed \u010dasto vrac\u00ed teplotu sk\u0159\u00edn\u011b z rozsahu PAG (80\u2013120 stup\u0148\u016f Celsia) zp\u011bt do standardn\u00edho rozsahu lithiov\u00fdch kapalin (pod 80 stup\u0148\u016f Celsia) \u2013 \u010d\u00edm\u017e zcela eliminuje pot\u0159ebu drah\u00e9ho syntetick\u00e9ho maziva. Tepeln\u00fd \u0161t\u00edt plus standardn\u00ed mazivo stoj\u00ed m\u00e9n\u011b ne\u017e \u017e\u00e1dn\u00fd \u0161t\u00edt plus mazivo PAG \u2013 a standardn\u00ed mazivo m\u00e1 lep\u0161\u00ed vlastnosti EP filmu. P\u0159ed v\u00fdb\u011brem maziva pro vysok\u00e9 teploty v\u017edy vyhodno\u0165te \u0161t\u00edt.<\/p>\n<\/details>\n

\nOt\u00e1zka: Vy\u017eaduje mou\u010dn\u00fd prach v bl\u00edzkosti \u0161nekov\u00fdch p\u0159evod\u016f v pek\u00e1rn\u00e1ch specifikaci ATEX?<\/summary>\n

Mou\u010dn\u00fd prach je ho\u0159lav\u00fd (minim\u00e1ln\u00ed koncentrace v\u00fdbu\u0161niny p\u0159ibli\u017en\u011b 60 g\/m\u00b3, minim\u00e1ln\u00ed teplota vzn\u00edcen\u00ed p\u0159ibli\u017en\u011b 380\u2013440 stup\u0148\u016f Celsia v z\u00e1vislosti na druhu mouky). Pokud \u0161nekov\u00fd p\u0159evod pracuje v oblasti klasifikovan\u00e9 jako ATEX z\u00f3na 21 nebo z\u00f3na 22 (p\u0159i norm\u00e1ln\u00edm nebo abnorm\u00e1ln\u00edm provozu se m\u016f\u017ee vyskytnout oblak prachu), mus\u00ed kryt spl\u0148ovat p\u0159\u00edslu\u0161nou kategorii za\u0159\u00edzen\u00ed ATEX. V praxi je v\u011bt\u0161ina sk\u0159\u00edn\u00ed \u0161nekov\u00fdch p\u0159evod\u016f v pek\u00e1rn\u00e1ch ut\u011bsn\u011bna a nem\u00e1 \u017e\u00e1dn\u00fd vnit\u0159n\u00ed zdroj vzn\u00edcen\u00ed \u2013 obvykle spl\u0148uj\u00ed po\u017eadavky z\u00f3ny 22 bez \u00faprav, proto\u017ee teplota povrchu ut\u011bsn\u011bn\u00e9ho krytu (i p\u0159i 120 stupn\u00edch Celsia) je hluboko pod teplotou samovzn\u00edcen\u00ed mou\u010dn\u00e9ho prachu. Hlavn\u00edm opat\u0159en\u00edm je zabr\u00e1n\u011bn\u00ed hromad\u011bn\u00ed mouky na vn\u011bj\u0161\u00ed stran\u011b krytu, kter\u00e1 by se mohla vzn\u00edtit od hork\u00e9ho povrchu \u2013 pravideln\u00e9 \u010di\u0161t\u011bn\u00ed povrchu krytu b\u011bhem v\u00fdroby udr\u017euje vrstvu prachu pod kritickou hloubkou.<\/p>\n<\/details>\n

\nOt\u00e1zka: Jak ovliv\u0148uje tepeln\u00e9 cyklov\u00e1n\u00ed (denn\u00ed zap\u00edn\u00e1n\u00ed\/vyp\u00edn\u00e1n\u00ed trouby) \u0161nekov\u00fd p\u0159evod?<\/summary>\n

Denn\u00ed tepeln\u00e9 cyklov\u00e1n\u00ed (z 20 stup\u0148\u016f Celsia za studena na v\u00edce ne\u017e 90 stup\u0148\u016f Celsia za tepla a zp\u011bt) m\u00e1 dva efekty. Zaprv\u00e9, tepeln\u00e1 rozta\u017enost a smr\u0161\u0165ov\u00e1n\u00ed pouzdra vytv\u00e1\u0159\u00ed mikropumpov\u00e1n\u00ed v t\u011bsn\u011bn\u00ed \u2013 b\u011bhem chlazen\u00ed je nas\u00e1v\u00e1n vzduch a b\u011bhem oh\u0159evu je vytla\u010dov\u00e1n \u2013 co\u017e v pr\u016fb\u011bhu m\u011bs\u00edc\u016f zav\u00e1d\u00ed atmosf\u00e9rickou vlhkost a mou\u010dn\u00fd prach kolem t\u011bsn\u011bn\u00ed. Zadruh\u00e9, b\u011bhem f\u00e1ze chlazen\u00ed, kdy\u017e teplota pouzdra p\u0159ekro\u010d\u00ed rosn\u00fd bod, se uvnit\u0159 pouzdra tvo\u0159\u00ed kondenzace. Tato kondenzace emulguje mazivo a koroduje nepota\u017een\u00e9 ocelov\u00e9 povrchy. Prevence: nainstalujte mal\u00fd odvzdu\u0161\u0148ovac\u00ed ventil s vysou\u0161ec\u00ed patronou, kter\u00e1 umo\u017e\u0148uje vyrovn\u00e1n\u00ed tlaku a z\u00e1rove\u0148 blokuje vlhkost a prach. Vysou\u0161ec\u00ed patronu vym\u011b\u0148ujte ka\u017ed\u00fdch 6 m\u011bs\u00edc\u016f. Toto p\u0159\u00edslu\u0161enstv\u00ed za 15 USD zabra\u0148uje degradaci maziva souvisej\u00edc\u00ed s vlhkost\u00ed, kter\u00e1 jinak v tepeln\u011b cykluj\u00edc\u00edch pek\u00e1rn\u00e1ch zkracuje \u017eivotnost maziva o 30 a\u017e 50 procent.<\/p>\n<\/details>\n

\nOt\u00e1zka: Jak\u00e1 je \u017eivotnost \u0161nekov\u00e9ho p\u0159evodu peka\u0159sk\u00e9 pece?<\/summary>\n

Se spr\u00e1vn\u00fdm mazivem pro skute\u010dnou teplotu sk\u0159\u00edn\u011b: 4 a\u017e 8 let p\u0159i jednosm\u011bnn\u00e9m provozu pek\u00e1rny (2 500 a\u017e 3 000 hodin ro\u010dn\u011b). Bronzov\u00e9 kolo je opot\u0159ebiteln\u00fdm prvkem; ocelov\u00fd \u0161nek vydr\u017e\u00ed 10 a v\u00edce let. S nespr\u00e1vn\u00fdm mazivem (standardn\u00ed mazivo ve vysokoteplotn\u00edm prost\u0159ed\u00ed): 3 a\u017e 12 m\u011bs\u00edc\u016f, ne\u017e karbonizace maziva zp\u016fsob\u00ed zrychlen\u00e9 opot\u0159eben\u00ed a potenci\u00e1ln\u00ed zastaven\u00ed. Volba maziva je nejd\u016fle\u017eit\u011bj\u0161\u00edm faktorem ur\u010duj\u00edc\u00edm \u017eivotnost v peka\u0159sk\u00fdch aplikac\u00edch \u2013 p\u00e1r se spr\u00e1vn\u00fdm mazivem vydr\u017e\u00ed p\u0159i zv\u00fd\u0161en\u00e9 teplot\u011b 5kr\u00e1t d\u00e9le ne\u017e stejn\u00fd p\u00e1r s nespr\u00e1vn\u00fdm mazivem. Ro\u010dn\u00ed kontrola by m\u011bla zahrnovat m\u011b\u0159en\u00ed teploty sk\u0159\u00edn\u011b, kontrolu stavu maziva (barva, konzistence) a m\u011b\u0159en\u00ed v\u016fle.<\/p>\n<\/details>\n<\/div>\n

<\/p>\n

Dopravn\u00edky v peka\u0159sk\u00fdch pec\u00edch a za\u0159\u00edzen\u00ed pro manipulaci s t\u011bstem p\u0159edstavuj\u00ed tepelnou v\u00fdzvu, kter\u00e1 je mezi aplikacemi \u0161nekov\u00fdch p\u0159evod\u016f jedine\u010dn\u00e1: sp\u00ed\u0161e ne\u017e vnit\u0159n\u00ed teplo z t\u0159en\u00ed ozuben\u00fdch kol vznik\u00e1 vn\u011bj\u0161\u00ed teplo z bl\u00edzkosti pece. Matice v\u00fdb\u011bru maziva pro vysok\u00e9 teploty \u2013 od teploty sk\u0159\u00edn\u011b a\u017e po \u0159adu plastick\u00fdch maziv \u2013 je nejd\u016fle\u017eit\u011bj\u0161\u00edm n\u00e1strojem pro specifikaci p\u00e1r\u016f \u0161nekov\u00fdch p\u0159evod\u016f v pek\u00e1rn\u00e1ch, proto\u017ee mazivo ur\u010duje, zda p\u00e1r vydr\u017e\u00ed p\u0159i zv\u00fd\u0161en\u00e9 teplot\u011b 5 let nebo 5 t\u00fddn\u016f. Tepeln\u00e1 rozta\u017enost p\u0159i 60 a\u017e 120 stupn\u00edch Celsia m\u011b\u0159iteln\u011b posouv\u00e1 osovou vzd\u00e1lenost a v\u016fli \u2013 co\u017e je kompenzov\u00e1no specifikac\u00ed men\u0161\u00ed po\u010d\u00e1te\u010dn\u00ed v\u016fle p\u0159i mont\u00e1\u017en\u00ed teplot\u011b. Tepeln\u00e9 st\u00edn\u011bn\u00ed mezi pec\u00ed a sk\u0159\u00edn\u00ed p\u0159evodu je \u010dasto n\u00e1kladov\u011b nejefektivn\u011bj\u0161\u00edm z\u00e1sahem, kter\u00fd sni\u017euje teplotu sk\u0159\u00edn\u011b o 20 a\u017e 40 stup\u0148\u016f Celsia a potenci\u00e1ln\u011b eliminuje pot\u0159ebu drah\u00e9ho syntetick\u00e9ho maziva. Klasifikace potravin\u00e1\u0159sk\u00e9 z\u00f3ny (p\u0159ed pec\u00ed versus z\u00f3na pece) ur\u010duje, zda je mazivo NSF H1 povinn\u00e9 nebo voliteln\u00e9, a posouzen\u00ed mou\u010dn\u00e9ho prachu ur\u010duje, zda je vy\u017eadov\u00e1na shoda sk\u0159\u00edn\u011b s ATEX.<\/p>\n

Pro v\u00fdrobce pek\u00e1rensk\u00fdch za\u0159\u00edzen\u00ed a in\u017een\u00fdry za\u0159\u00edzen\u00ed na\u0161e technick\u00e9 odd\u011blen\u00ed prov\u00e1d\u00ed v\u00fdb\u011br maziva s ohledem na nam\u011b\u0159enou nebo odhadovanou teplotu sk\u0159\u00edn\u011b. Standardn\u00ed katalog \u0161nekov\u00e9 p\u0159evody pro potravin\u00e1\u0159sk\u00e9 \u00fa\u010dely<\/a> Dod\u00e1v\u00e1me se standardn\u00edm, PAG a silikonov\u00fdm mazivem s rozte\u010d\u00ed st\u0159ed\u016f od 63 do 160 mm. Ode\u0161lete Specifikace pohonu pek\u00e1rny<\/a> s teplotou pece, polohou pohonu (vzd\u00e1lenost\u00ed od pece) a m\u011b\u0159en\u00edm teploty pouzdra, pokud je k dispozici.<\/p>\n

<\/p>\n

\n

Specifikujete p\u00e1ry \u0161nekov\u00fdch p\u0159evod\u016f pro peka\u0159sk\u00e9 pece nebo za\u0159\u00edzen\u00ed pro manipulaci s t\u011bstem?<\/h3>\n

Ode\u0161lete teplotu pece, polohu pohonu vzhledem k peci, teplotu pouzdra (nebo ji odhadneme) a zda se pohon nach\u00e1z\u00ed v z\u00f3n\u011b pro potraviny nebo v z\u00f3n\u011b po pe\u010den\u00ed. Doporu\u010d\u00edme v\u00e1m mazivo, materi\u00e1l a p\u0159\u00edstup k teplotn\u00edmu \u0159\u00edzen\u00ed.<\/p>\n

Vy\u017e\u00e1dejte si specifikaci pohonu pek\u00e1rny \u2192<\/a><\/p>\n<\/div>\n

St\u0159iha\u010d: Cxm<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

Korea Ever-Power \u00b7 Application Engineering Guide Worm and Worm Wheel for Bakery Oven Conveyors and Dough Handling The worm gear pair driving a tunnel oven conveyor sits 400 mm from a chamber running at 230 degrees Celsius. Radiant heat raises the gear housing surface to 85-110 degrees Celsius \u2014 well above the 80-degree limit of […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[2821],"tags":[],"class_list":["post-1380","post","type-post","status-publish","format-standard","hentry","category-worm-and-worm-wheel"],"_links":{"self":[{"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/posts\/1380","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/comments?post=1380"}],"version-history":[{"count":1,"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/posts\/1380\/revisions"}],"predecessor-version":[{"id":1382,"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/posts\/1380\/revisions\/1382"}],"wp:attachment":[{"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/media?parent=1380"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/categories?post=1380"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/worm-and-worm-wheel.com\/cs\/wp-json\/wp\/v2\/tags?post=1380"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}