Ko tēhea rauemi hiri papu kai hei whiriwhiri māu?

Kupu Whakataki

Ko te whiriwhiri i tētahi rauemi hiri mō tētahi papu kai-kai he pānga nui atu i te ārai turuturu anake. Me tu atu te elastomer, te rauemi mata rānei tika i ngā matū horoi, i ngā huringa pāmahana, i te matū hua, me ngā whakaritenga hoahoa akuaku me te kore e maringi ngā matūriki, e pupuhi, e hanga wāhi rānei e tipu ai ngā huakita. Ka taea e te taunga koretake te whakapoto i te roa o te mahi, te whakanui ake i te wā kore mahi, me te whakauru i ngā mōrearea poke he utu nui ki te kimi me te whakatika. E whakamārama ana tēnei tuhinga i ngā āhuatanga matua o ngā rauemi hei whakataurite, ngā āhuatanga whakahaere e akiaki ana i te kōwhiringa, me ngā tauwhitinga i waenga i ngā kōwhiringa noa kia taea ai e koe te whiriwhiri i tētahi hiri papu kai-kai e tautoko ana i te mahi pono me te tutuki i ngā ture.

He aha te Hiranga o te Kōwhiringa Rauemi Hiri Papu Kai

I roto i ngā pūnaha whakahaere wai hauora, ko tengā hiri miihiniā, he iti noa iho te utu o ngā taputapu whakapaipai tuatahi mō ngā gaskets static i roto i te papu. Heoi, ko ēnei wāhanga te take nui rawa atu mō ngā whakararuraru tukanga, e whai take ana i te nuinga o ngā rahunga papu me te wā kore mahi tiaki i whakaritea. Te whiriwhiri i te mea tikarauemi hiri papu kaihe whakatau hangarau nui e pā tika ana ki te whai huatanga o te whakahaere, te tutuki i ngā ture, me te tiakitanga waitohu.

He rerekē tēnei i ngā mahi ahumahi e puta ai he tūponotanga taiao, he tūponotanga miihini rānei te turuturu o te hiri, engari ka nui ake te tūponotanga o te poke koiora i roto i ngā mahi akuaku. Ehara i te mea ka ngaro noa te hua o tētahi hiri kua pakaru i roto i te taiao tukatuka kai; engari ka hangaia he wāhi moroiti mō ngā mate pāwera, ka whakararu i ngā puranga whakaputa katoa, ā, ka tūpono hoki ki ngā aituā kino ki te hauora o ngā kaihoko.

Ngā tūponotanga poke me te haumaru o ngā hua

Ko te mahi matua o tētahi hiri papu kai ko te pupuri i tētahi ārai ā-roto i waenganui i te rauemi tukatuka me te taiao o waho, me te ārai hoki i ngā kapiti o roto e taea ai e te hua te noho pūmau. Ko ngā hapa o te mata moroiti, te pakaru o te elastomer, te kore hototahi rānei o ngā matū ka arahi ki te maturuturunga o ngā rauemi, ka whakauru tika mai i ngā matūriki ke ki roto i te awa kai.

Hei tāpiri atu, ka taea e ngā elastomer kua pakaru te whakawhanake i ngā moroiti-mōkito e mau ana i ngā kiriata koiora. Mō te tutuki i ngā whakaritenga akuaku, ko ngā mata kua mākū, tae atu ki ngā mata hiri me ngā elastomer, me nui ake te taratara o te mata i te 0.8 µm Ra (32 µin). Ina he te tohu tika o tētahi rauemi hiri, ā, ka pakaru, ka tino piki ake tōna taratara o te mata, ka taea ai e ngā huakita pērā i a Listeria, i a Salmonella rānei te noho ki ngā wāhi e kore e taea e ngā tikanga horoi paerewa te tae atu. Ko te whakahokinga hua me ngā whiu ture ka nui ake i te utu tuatahi o te tohu i tētahi rauemi hiri kounga teitei.

Ngā āhuatanga whakahaere e raru ai te hiri

Ko te roa o te hiri e whakatauhia ana e ngā ahotea ā-pūkaha me te wera o te taiao tukatuka motuhake. Ko ngā take noa o te pakaru wawe ko te rere maroke, te cavitation, te ru wera, me te kakahu whakakoi. He maha ngā wā ka pāngia ngā papu nekehanga pai me ngā papu nekehanga pai e ngā āhuatanga rere maroke poto i te wā e tīmata ana te pūnaha, e whakakorengia ana rānei te tāke.

Mā te whakamaroke i te hiri miihini ka piki ake te pāmahana o te mata o te hiri neke atu i te 150°C (300°F) i roto i te 60 hēkona. Nā tēnei pikinga tere o te wera ka pupuhi tonu ngā elastomers paerewa me te pakaru wera o ngā mata mārō pērā i te uku alumina, te karawiti silicon rānei. Hei tāpiri, mā te pupuhi i ngā rauemi matotoru rawa, i ngā wai rānei me ngā kawenga matūriki teitei (pērā i te paraoa hua, i te huka tioata rānei) ka puta he kakahu kino, me whai rauemi mata mārō ka taea te tu atu i te horoinga miihini tonu me te kore e ngaro te papatahi tika.

Ngā Rauemi me ngā Kōwhiringa Hiri Papu Kai

Ka whakawhirinaki ngā hiri papu hauora ki te huinga o ngā elastomers ngāwari mō te hiri pūmau (pēnei i ngā mowhiti-O, ngā pupuhi, me ngā gaskets) me ngā rauemi pakari mō ngā mata hiri miihini hihiri. Ko te whirihoranga tino pai ka whakawhirinaki ki te whakataurite i ngā āhuatanga miihini, ngā rohe wera, me te ātete matū o ēnei rauemi ki ngā hiahia o te tukanga.

Ngā elastomers noa: EPDM, FKM, me NBR

Ka whakaratohia e ngā elastomers te ngāwari e tika ana hei pupuri i te hiri i raro i ngā pēhanga me ngā pāmahana rerekē. Ko te Ethylene Propylene Diene Monomer (EPDM) te elastomer e whakamahia whānuitia ana i roto i te umanga kai me te inu nā tōna ātete tino pai ki te wai wera me te mamaoa, ka taea te whakahaere tonu i ngā pāmahana tae atu ki te 150°C (302°F). Heoi, he tino ngāwari te EPDM ki te pirau ina pāngia e ngā ngako kararehe, ngā hinu huawhenua, me ngā hinu whakahinuhinu, kāore e pai mō te tukatuka miraka, hinu kai rānei.

Ko te rapa fluorocarbon (FKM), e mōhiotia whānuitia ana e ngā waitohu pēnei i a Viton, he ātete pai ki ngā ngako, ngā hinu, me te whānuitanga o ngā matū, ā, ka mahi pono tae atu ki te 200°C (392°F). Ko tōna ngoikoretanga matua ko te ngoikore ki te roa o te wā e pāngia ana e ngā otinga horoi kawakore wera me te mamaoa parakore. Ko te Nitrile Butadiene Rubber (NBR), Buna-N rānei, he huarahi utu-whai hua mō ngā tono hinu me te ngako engari he iti ake te pāmahana mahi mōrahi o te 100°C (212°F), e whakawhāiti ana i tōna whakamahinga i roto i ngā tukanga whakahoromata pāmahana teitei.

Ngā rauemi mārō: PTFE, UHMW-PE, waro, silicon carbide, me te maitai kore waikura

Ngā mata hiri miihini hihirie hiahiatia ana ngā rauemi i hangaia mō te tino papatahi, te pakeke, me te iti o te waku. He tino pai te koretake o te matū o te Polytetrafluoroethylene (PTFE) me te Ultra-High-Molecular-Weight Polyethylene (UHMW-PE) me te iti o te waku, engari kāore i a rātou te pakari o te hanganga e hiahiatia ana mō ngā tono hurihuri pēhanga teitei, tino kaha rānei te haehae.

Mō ngā hiri hurihuri uaua, ko te Waro Graphite, te Silicon Carbide (SiC), me te Tungsten Carbide (TC) ngā paerewa ahumahi. He tino pai ngā āhuatanga whakahinuhinu-ake o te waro graphite, ā, he ngāwari ki te whakamahi i ngā āhuatanga whakakoi i ngā wā poto o te whakamaroke, ahakoa he ngoikore ki ngā mea whakakoi. He tino mārō te Silicon Carbide, ā, he tino ātete ki te whakakoi me te whakaeke matū, engari nā tōna āhua pakarukaru ka ngawari ki te ru miihini me te wera. He maha te whakamahinga o te kowiri tira (te tikanga 316L) mō ngā wāhanga hurihuri me ngā whare nā tōna pakari, ahakoa he onge te whakamahinga hei mata hiri mau tuatahi ki tētahi atu konganuku nā te tūponotanga o te whakapataritari.

Me pēhea te whakataurite i ngā rauemi hiri papu kai

Ko te whiriwhiri i te rauemi tika me arotake whānui i te taiao ā-tinana, ā-matū hoki o te papu me ngā anga ture pakari e whakahaere ana i ngā rauemi e pā ana ki te kai. Tērā pea ka whakakorehia te rauemi e mahi pai ana mai i te tirohanga ā-mīhini mēnā kāore i a ia ngā tiwhikete e tika ana hei whakarite i te haumaru o te kaihoko.

Ngā paearu matua mō te whiriwhiri rauemi

Ko ngā paearu matua mō te whiriwhiri rauemi hiri e aro ana ki te hototahitanga matū, te pumau wera, me te roa o te mahi miihini. Me arotake e ngā kaihangarau te whānuitanga katoa o ngā pāpāho ka tūtaki te hiri, tae atu ki te hua kai matua me ngā matū kaha e whakamahia ana i te wā horoi. Me tu tonu ngā mata hiri me ngā elastomers ki ngā otinga kawakore Clean-in-Place (CIP) me ngā taumata pH mai i te 11 ki te 13, me ngā mea whakakore waikawa, me te kore e pakaru te matū, e pupuhi rānei.

Ko ngā rohenga tere-pēhanga (PV) tētahi atu paearu ā-mīhini nui. Ko te uara PV e tohu ana i te whanaungatanga i waenga i te pēhanga e pā ana ki ngā mata hiri me te tere hurihuri o tepūwero papuKo te nui rawa atu i te rohe PV o tētahi huinga rauemi (hei tauira, te Waro me te Kowiri tira) ka hua ake he wera nui rawa atu o te waku, ka arahi ki te mimiti wawe o te kiriata wai i waenganui i ngā mata o te hiri, ā, ka tere te pakaru kino.

Ngā paerewa e tika ana: FDA, EC 1935/2004, USP Akomanga VI, me te 3-A

Kāore e taea te whakahē i te tutuki i ngā ture i roto i ngā mahi kai me te inu. I te Hononga o Amerika, ka whakahau te FDA i te haumaru o ngā rauemi mā roto i te Ture Whakahaere ā-Motu. Ina koa, e whakahau ana te FDA CFR 21.177.2600 kia kaua e neke ake i te 20 mirikaramu ia inihi tapawha ngā rohe tangohanga mō ngā taonga rapa e whakamahia ana i te wā e pā ana ki ngā kai wai i te 20 mirikaramu ia inihi tapawha i roto i ngā haora 7 tuatahi o te tangohanga. Me hanga ngā rauemi mā te whakamahi i ngā kai kua whakaaetia anake hei ārai i te mimiti paitini.

I Ūropi, ka whakatūhia e te EC 1935/2004 ngā whakaritenga whānui mō ngā rauemi e pā ana ki te kai, me te whakanui i te kaha ki te whai i ngā mea katoa puta noa i te mekameka tuku. Mō ngā tono tino tairongo, pērā i ngā rongoā koiora, ngā rongoā nutraceutical motuhake rānei, he maha ngā wā ka hiahiatia te tiwhikete USP Class VI, tae atu ki te whakamātautau kaha i te tauhohenga koiora in-vivo. Hei tāpiri, ko ngā Paerewa Hauora 3-A (e mōhiotia whānuitia ana puta noa i te ao) ehara i te mea ko te hanganga rauemi anake, engari ko te hoahoa akuaku o te hiri, me te whakarite kia kore he waewae mate, ā, ka taea te horoi pono i te wāhi.

Te Pānga o ngā Āhuatanga Tukanga me te Tiaki ki te Kōwhiringa Rauemi

Kāore i te maha ngā wā ka whakatauhia te huringa mahi o tētahi hiri papu kai e te papu pumau o te hua kai tonu. Engari, ka puta ngā taumahatanga rauemi tino kaha i ngā wā whakawhiti, inā koa i te wā o ngā tikanga horoi me te whakahoromata kaha e whakahauhia ana e ngā kaupapa haumaru kai.

Te whakataurite i ngā rauemi ki te pāmahana, ki ngā pāpāho, me ngā huringa horoi

Mā ngā tikanga Horoi-i-te-Wāhi (CIP) me te Whakahoromata-i-te-Wāhi (SIP) ka whakauruhia he huringa wera kaha me ngā matū whakahāora kaha ki roto i te whare papu. Ko te tikanga, ka whakaatuhia ngā hiri o roto e te huringa SIP ki te mamaoa kua mākū i te 121°C (250°F) mō te 30 ki te 45 meneti. Me whai elastomers tēnei me te pumau wera tino pai me te huinga pēhanga iti; ki te kore, ka papatahi tonu ngā mowhiti-O, ka ngaro te kaha hiri radial ina whakamatao te papu.

Hei tāpiri atu, ko te pāpāho tonu te mea e whakatau ana i te hononga tribological o ngā mata hiri mīhini. Mā ngā pāpāho tino matotoru, piri rānei, pērā i ngā tirikara taumaha, i ngā tiakarete wai rānei, ka piri pea ngā mata hiri tetahi ki tetahi ina kore e mahi te papu. Ina tīmata, ka taea e te taipana pakaru te pakaru i ngā mata waro pakarukaru. I roto i ēnei āhuatanga, he maha ngā wā ka tohua he huinga mata mārō-ki-mārō, pērā i te Silicon Carbide versus Silicon Carbide (SiC/SiC), kia tū atu ki te taipana teitei me te āhua whakakoi o te pāpāho.

Te whakataurite i te roa o te hiri, te ma, me te utu

Me whakataurite e ngā kaiwhakahaere whare te utu hoko tuatahi mō ngā rauemi hiri kounga teitei ki te utu katoa o te mana whakahaere, tae atu ki te mahi tiaki, ngā wāhanga whakakapinga, me te wā whakaputa kua ngaro. Ahakoa he rawaka pea ngā rauemi paerewa mō ngā tono iti te kaha, me whai otinga pakari ngā taiao tukatuka tonu hei whakaroa i te Wā Waenga i waenganui i ngā Rahunga (MTBF).

Mā te whakataurite rautaki i te rauemi ki te hua me te huringa horoi, ka taea e ngā tipu te whakapai ake i te horoinga me te kore e whakaiti i te roa o te hiri. Mā te whakapai ake ki tētahi rauemi mata mārō ake, ki tētahi elastomer kore matū rānei, ka tere te hokinga mai o te haumi mā te whakakore i tētahi wawaotanga tiaki kore i whakaritea i ia tau.

Me pēhea te whiriwhiri me te whakamana i te rauemi hiri tika

Ko te whakaoti i te whakatakotoranga rauemi hiri he wāhanga noa iho o te wero hangarau. Ko te hoko rauemi pono, e tutuki ana i ngā whakaritenga, me te whakamana i tō rātou tāutanga he mahi nui anō hoki hei whakarite i te pono o te tukanga me te rite o te arotake.

Ina tika te whai mana o ngā rauemi kounga teitei

Ahakoa e kapi ana te nuinga o ngā hiahia tukatuka kai i te EPDM me te FKM paerewa, ko ētahi tono tino nui e tika ana kia haumi ki ngā rauemi kounga teitei pēnei i te Perfluoroelastomers (FFKM). Ka taea e ngā mowhiti-O FFKM te utu 10 ki te 20 ngā wā nui atu i ō rātou rite EPDM paerewa, he utu nui i mua. Heoi, kua hangaia kia tu atu ki ngā pāmahana tae atu ki te 327°C (620°F) ā, he tata ki te hototahi ki ngā matū katoa.

I roto i ngā raina tukatuka tonu, ina taea e te wā whakamutu kore i whakamaheretia te utu neke atu i te $10,000 ia haora mō te hua ngaro me te hua maumau, he ngāwari te whakamāori i te utu tīmatanga nui o te FFKM, o ngā mata Silicon Carbide kua pania ki te taimana motuhake rānei. Ko ēnei rauemi kounga teitei ka whakamahia i roto i ngā raina whakaputa pāmahana teitei, ngā raina takai aseptic kaha, ngā tukanga rānei e whakamahi ana i ngā wai horoi waikawa peracetic tino kukū e tere ana te whakangaro i ngā elastomers iti ake.

Ngā arowhai hoko me te whakamana i mua i te tāutanga

Ka taea te whakakapi i ngā rauemi me ngā wāhanga rūpahu i roto i te mekameka tuku mō ngā wāhanga hauora. I mua i te tāutanga,ngā rōpū tiaki me te whakapūmau koungame whakahaere ngā arowhai whakamana pakari. Ka tīmata tēnei mā te tono Tiwhikete Whakatutukitanga (CoC) me ngā pūrongo whakamātautau rauemi mai i te kaiwhakarato, hei whakaū kei te tutuki te puranga motuhake o ngā elastomers, o ngā mata hiri rānei i ngā paerewa FDA, 3-A, EC 1935/2004 rānei.

Ko ngā tikanga whakamana e hiahia ana kia puritia e ngā whare ēnei tiwhikete puranga mō te iti rawa o te 3 ki te 5 tau, i runga i ngā ture haumaru kai ā-rohe, kia taea ai te whai i te katoa o ngā mea mēnā ka arotakehia, ka whakahokia mai rānei he hua. Hei tāpiri, mā te manatoko ā-tinana i te taenga mai—pērā i te whakamātautau durometer (pakeke) o ngā elastomers me te tirotiro ā-kanohi o te papatahi o te mata hiri i raro i te mārama kotahi-tae—ka whakarite kia kore ngā wāhanga e pakaru i te wā hanga, i te wā kawe rānei. Mā te manatoko tika ka whakamanahia kia tino tutukihia ngā tawhā haumaru hangarau o te hiri papu kai i roto i te taiao whakaputa.

Ngā Whakaaro Matua

• Ko ngā whakatau me ngā take tino nui mō te hiri papu kai
• Ngā whakaritenga, ngā whakaritenga, me ngā arowhai mōrearea e tika ana kia whakamanahia i mua i tō whakaae
• Ngā mahi whai muri me ngā whakatūpato ka taea e ngā kaipānui te tono tonu

Ngā Pātai Auau

Ko tēhea elastomer te mea pai mō te wai wera me te mamaoa i roto i ngā papu kai?

Ko te EPDM te mea pai rawa atu mō te wai wera, te mamaoa, me te CIP tae atu ki te 150°C. Kaua e whakamahia ki te hinu kai, ki te hinu ngako rānei, kei reira ka tere ake te pirau.

Me whiriwhiri rānei e au te FKM mō ngā mahi miraka, mō te hinu kai rānei?

He pai ake te FKM i te EPDM mō ngā ngako, ngā hinu, me ngā matū maha. Heoi, tirohia mēnā kei te pāngia koe e ngā kaihoroi kawakore wera me te mamaoa parakore, ka taea e ēnei te whakapoto i te roa o te FKM.

Ko tēhea rauemi mata hiri e tino pai ana mō ngā kai whakakoi?

He kōwhiringa kaha te karawiti silicon mō ngā mea whakakoi pērā i te paraoa hua, te huka tioata rānei. He pakari teitei, he ātete ki te pakaru, ā, he pumau te mahi i roto i ngā papu paru kore e hiahiatia ana.

Me pēhea taku mōhio mēnā he pai te hiri papu kai mō ngā whakaritenga akuaku?

Me whakaū kei te tutuki ngā rauemi mākū i ngā paerewa e hiahiatia ana mō te pa atu ki te kai, ā, kei te pai hoki te āhua o te mata mō te akuaku, tata ki te 0.8 µm Ra, neke atu rānei. Me whakaū hoki kei te hototahi ki tō huringa horoi.

Ka taea e Victor Seals te tuku hiri papu kai hototahi ki te OEM?

Āe. Ka whakaratohia e Victor Seals ngā hiri miihini hototahi-OEM me ngā hiri whakakapinga mō te maha o ngā waitohu papu, hei āwhina i ngā tīma tiaki ki te whakataurite i ngā rauemi hiri ki ngā tikanga tukatuka kai me ngā whakaritenga ratonga.