TL;DR:Mashopu ekugadzira mapurasitiki muSoutheast Asia — zviuru zvezvivakwa zvekugadzira mapurasitiki mudunhu reSamut Prakan muThailand, dunhu reBinh Duong muVietnam, nedunhu reTangerang muIndonesia — vari kuvandudza masisitimu avo ehydraulic nemapombi eT7 series vane seri senzira inodhura zvishoma pane kutsiva muchina wese kana kushandura kuita tekinoroji yeservo. Pombi yeT7 vane — pombi yevane ine simba guru, ine simba guru, inoyerera zvakanyanya inogadzirwa neVicks Hydraulic ine simba rekugadzira rinosvika 80,000+ units pagore — ndiyo inofarirwa nekuti inopa simba rekuyerera nekumanikidzwa kunodiwa nemashini ekugadzira majekiseni, nemagwaro echitupa (CCS, DNV, ABS, BV, LR) ayo vagadziri vemashini nevatengi vekupedzisira vari muchikepe chemugungwa nekunze kwenyika vanoda. Kuvandudzwa uku kunosanganisira kutsiva pombi iripo yekufambisa (kazhinji Vickers V20 kana Vickers V series equivalent) nepombi yekufambisa inoshanduka yeT7 inoenderana neprofile yezvinodiwa nemuchina — kuyerera kwakanyanya panguva yekuisa majekiseni nepurasitiki, kuyerera kushoma panguva yekuisa majekiseni nekubatanidza. Kuverenga kwehuwandu hwemvura inoyerera — kuona kufambiswa kwepombi mu cm³/rev kunodiwa pakushanda kwe clamping, injection, uye ejection — ndiyo nzira yakakosha inosarudza kana kuvandudzwa kwacho kuchipa simba rinotarisirwa (kudzikiswa kwe25-35% mukushandiswa kwesimba re hydraulic) uye kuvandudzwa kwenguva yekutenderera kunotarisirwa (kudzikiswa kwe5-10% kubva pakumhanya kwe clamp nekukurumidza). Chinyorwa chino chinotaura nezvekuyerera nekumanikidzwa kwepombi yeT7, pressure compensator logic, mukana wekusimbisa wekugadzira injection yegungwa, uye maitiro ekugadzirisa ayo vatariri veworkshop vanofanira kuronga.
Nei T7 Series Vane Pumps Inonyanya Kushandiswa Pakugadzira Michina Yekugadzira Injection muSEA
Sisitimu yehydraulic yemuchina wekugadzira majekiseni muSE Asian workshop inowanzo shanda pombi yevane inochinjika inomhanya nguva dzose nekumhanya kwemota yemagetsi (1,450-1,750 RPM, zvichienderana nehuwandu hwemapango emota uye frequency yemagetsi yemuno — 50 Hz munyika dzese dzeSE Asian). Pombi inochinjika inopa mwero wekuyerera unogara uripo (zvichienderana nekumhanya kwemota) zvisinei nekuti muchina unoda kuyerera nekukurumidza. Kana muchina uri muchikamu chekutonhodza chedenderedzwa rekuumba — kazhinji 40-60% yenguva yese yekutenderera — pombi ichiri kuburitsa kuyerera kwakazara, uko kunotsauswa kuburikidza nevharuvhu yekurerutsira yakaenzana yesystem pakumanikidzwa kwakazara kwesystem, zvichishandura simba rehydraulic kuita kupisa kunofanira kubviswa nechiller kana tower yekutonhodza.
Pombi yeT7 variable-displacement vane inogadzirisa kusashanda zvakanaka uku nekushandisa nzira yekudzora pressure compensator control. Kufamba kwepombi (huwandu hwemafuta anounzwa pakuchinja kwega kwega) kunodzorwa nespring-loaded compensator spool inonzwa kumanikidzwa kwepombi. Kana kumanikidzwa kwepombi kwasvika pakugadzirisa compensator (kazhinji kunoiswa pa10-20% pamusoro pezvinodiwa nesystem zvekunzwa mutoro), compensator spool inoshanduka, ichideredza kufamba kwepombi kusvika padanho repasi (kazhinji 5-15% yekufamba kwakazara). Pombi inoramba ichitenderera nekumhanya kwemota asi inopa chete kuyerera kwakaderera kunodiwa kuchengetedza pressure compensator setting - kufamba kwaimboshandiswa kuburikidza ne relief valve ikozvino kwaponeswa, zvichideredza kushandiswa kwesimba repombi ne60-80% panguva yekutonhora.
Kuchengetedza simba kubva papombi inochinja-chinja kunoenderana nenguva yekutonhora kwechikamu sechikamu chenguva yese yekutenderera. Kune shopu yebasa reSE Asian injection molding — kugadzira midziyo yemumba, zvikamu zvemotokari, kana zvinhu zvevatengi zvine zvikamu zvekutonhora zvemasekondi 8-15 mudenderedzwa rese remasekondi 20-30 — pombi inochinja-chinja inochengetedza 25-35% yekushandiswa kwemagetsi ehydraulic system zvichienzaniswa nepombi inochinja-chinja ine chiyero chakafanana chekuyerera. Kuchengetedza simba pamitengo yemagetsi eindasitiri yeSE Asian ($0.08-$0.12 pa kWh) kunounza kuchengetedza kwegore negore kwe$800-$2,500 pamuchina pagore, uye nguva yekubhadhara yekuvandudza pombi yeT7 (mutengo wepombi + basa rekuisa) mwedzi 6-15.
Vicks Hydraulic'sT7 vane pombi yemhando yepamusoroinosanganisira kuchinjika kubva pa16 cm³/rev kusvika pa237 cm³/rev, zvichisanganisira zvinodiwa zvekuyerera kwemichina yekuisa jekiseni kubva pa50 matani (clamping force) kusvika pa2,000 matani.
Kufananidza Mwero Wekuyerera Kwemvura: Kuverenga Kubviswa Kwepombi Inodiwa yeClamp, Jekiseni, uye Kuburitswa Kwemvura
Kubviswa kwepombi — huwandu hwemafuta anounzwa pakuchinja kwemuchina wepombi — hunofanira kuenzaniswa nebasa rinodiwa zvakanyanya nemuchina. Pamuchina wekugadzira majekiseni, kudiwa kwakanyanya kwemvura ibasa rekuisa majekiseni (plunger iri kufambira mberi kuzadza cavity), ichiteverwa nebasa rekusimbisa (platen inofamba ichivhara mold) uye basa rekubudisa majekiseni (mapini eejector anosunda chikamu ichi kubuda mumold).
Fomura yekuverenga yekuchinja: Kuchinja kunodiwa (cm³/rev) = (Kudiwa kwekufamba muL/min × 1,000) ÷ (Kumhanya kwemota muRPM × kushanda zvakanaka kwevhoriyamu). Kune muchina wekugadzira majekiseni we200-tonne une mota yemagetsi yakajairika inoshanda pa1,450 RPM (50 Hz supply):
- Kudiwa kwekuyerera kwebasa rejekiseni:Dhayamita yepungi yejekiseni i60-80 mm, kurovera kwejekiseni i150-200 mm, uye kumhanya kwejekiseni kunodiwa i80-120 mm/s. Kudiwa kwemvura inodiwa i25-50 L/min (zvichienderana nedhayamita yepungi uye kumhanya kwejekiseni). Pombi inofanira kupa mwero uyu wekuyerera kwemvura padanho rekumanikidzwa kwejekiseni (1,500-2,000 bar injection pressure, iyo inoda kumanikidzwa kwepombi yekubuda kwe150-200 bar nekuti kumanikidzwa kwejekiseni kunowedzerwa nechiyero chenzvimbo yepungi).
- Kudiwa kwekushanda kwekirampu:Dhayamita ye clamp silinda ndeye 200-300 mm uye kumhanya kwekuvhara kunodiwa ndeye 250-350 mm/s (clamp inofanira kuvharwa nekukurumidza panguva ye "kuvhara nekukurumidza" mold halves isati yasangana). Kudiwa kwekuyerera kwe fast-close phase ndeye 100-150 L/min — yakakwira zvakanyanya kupfuura kudiwa kwekuyerera kwe injection.
- Sarudzo yepombi:Kukwanisa kuyerera kwepamusoro kwepombi kunofanira kugutsa kudiwa kukuru kwekuyerera - basa re clamp ndere 100-150 L/min. Pombi yeT7 series ine displacement ye 80-100 cm³/rev inoshanda pa 1,450 RPM inopa 110-140 L/min (yakaverengerwa: 80 cm³/rev × 1,450 RPM × 0.95 volumetric efficiency = 110 L/min). Kushandiswa kwepombi yakasarudzwa yemuchina we 200-tonne kunowanzova 100 cm³/rev, zvichipa kugona kuyerera kwe 138 L/min pa 1,450 RPM.
Pombi yakasarudzwa inofanirawo kuzadzisa zvinodiwa zvakanyanya zvemuchina — kugadzira simba rekusimbisa kunoda simba guru (pombi inofanira kupa simba rekusimbisa rinoyerwa padanho rekusimbisa system). Kune muchina we200-tonne une nzvimbo ye clamp cylinder ye315 cm² (dhayamita yecylinder 200 mm), simba rekusimbisa pombi rinodiwa kuti rigadzire matani 200 esimba rekusimbisa i200,000 kg ÷ 315 cm² = 635 kg/cm² hydraulic pressure, iyo inowanikwa ne clamp force multiplication cylinder — simba rekubudisa pombi rinowanzova 140-175 bar (rinodzorwa ne system relief valve uye pombi's compensator setting).
Kusarudzwa kweDanho reKudzvanyirira: Kuzadzwa kweDzvinyiriro Yakaderera vs Kubata kweDzvinyiriro Yakakwira — Mashandiro anoita Pombi yeKudzvanyirira KweDzvinyiriro
Chinopa simba rekudzvanya chepombi yeT7 vane ndicho chinoderedza kufamba kwepombi kana kudzvanya kwesystem kwasvika pakugadzirisa. Kunzwisisa mashandiro emuchina uyu kwakakosha kuti maneja weworkshop agadzire kudzvanya kwakakodzera kwemuchina uyu uye kugadzirisa matambudziko ekushanda kwesystem mushure mekuvandudza.
Standard compensator (single-pressure compensator, iyo default configuration yemichina yekugadzira jekiseni):Chinopa simba ivharuvhu re spool rakaiswa muchivharo chekudzora chepombi. Chinopa simba chinobva chaiswa muchitubu kusvika panzvimbo yakavhurika (nzvimbo yakanyanya kufambiswa) uye chinoiswa padanho rekumanikidzwa kwepombi kune rimwe divi. Kana kumanikidzwa kwepombi kuchikwira pamusoro penzvimbo yekumanikidzwa kwespring ye compensator (inogona kugadziriswa ne hex screw pasi pe compensator cap), spool inoshanduka, ichitungamira kumanikidzwa kwe control kune piston yekudzora ye displacement yepombi. Piston yekudzora inoderedza kona ye cam ring yepombi, ichideredza kufambiswa. Chinopa simba chinopindura kuchinja kwekumanikidzwa mukati me50-100 milliseconds - system yekudzora yemuchina we injection molding inofanira kurongwa kuti iite kurongeka kwekuvhurika kwevharuvhu nekuvharwa kwayo kuti ipe nguva ye compensator yekupindura pasina kugadzira pressure spikes musystem.
Chinopa simba rekuona mutoro (sarudzo, kune masisitimu anochinja-chinja ekumanikidzwa):Pombi iyi ine pombi inoona mutoro yakabatana netambo yevharuvhu yekudzora yebhangi remuchina. Muchina uyu unochengetedza pressure margin inogara iripo (inowanzova 15-25 bar) pamusoro pezvinodiwa zvakanyanya pakumanikidzwa kwemutoro, pachinzvimbo chekusaita default kune fixed compensator setting. Muchina uyu unoona mutoro unoshanda nesimba zvakanyanya kupfuura muchina unoona load compensator mumichina inoshanda mabasa akawanda panguva imwe chete (semuenzaniso, clamping + injecting, kana ejecting + opening the mold), nekuti pressure yepombi inotevedzera load demand pane kusaita default kune compensator setting kana pasina basa riri kushanda. Muchina uyu unoona load-sensing unowedzera 15-25% kumutengo wepombi uye unotsanangurwa kumichina ine mabasa akawanda (2-component injection molding, rotary-table injection, kana michina ine core-pull cylinders).
Kune michina yakawanda yekugadzira majekiseni, gadziriro ye compensator yakajairika ndeye 10-20 bar pamusoro pegadziriro yepamusoro ye relief valve ye system. Kana vharuvhu re relief system rakaiswa pa 175 bar, compensator yakaiswa pa 190-195 bar. 15-20 bar margin inoita kuti compensator isakanganise mashandiro e relief valve panguva yekushanda kwakajairika - kana compensator yakaiswa pa 175 bar (zvakafanana ne relief valve), compensator yaizotanga kuburitsa pombi isati yasimuka vharuvhu re relief, zvichidzivirira system kusvika pa relief valve panguva yekutanga uye zvichikonzera kusagadzikana kwekudzora kudzvanywa.
Chitupa cheCCS/DNV/ABS Chakanakira pakushandisa Marine-Use Injection Molding Lines
Maworkshop ekuumba majekiseni eSE Asian anogadzira zvinhu zvemaketani ekugadzira zvinhu zvegungwa, zvegungwa, uye zvekuvaka ngarava — zvakaita semapipe fittings, matireyi etambo, mavharuvhu, uye ma buoyancy modules — anoda ma hydraulic pumps ane classification society certification (CCS, DNV, ABS, BV, kana LR). Chitupa chinosimbisa kuti zvinhu zvepombi, dhizaini, uye maitiro ekuyedza zvinosangana nemitemo yeclassification yemidziyo yegungwa neyegungwa.
Mapombi eT7 ane Vicks Hydraulic ane chitupa cheCCS (China Classification Society), DNV-certified (Det Norske Veritas), ABS-certified (American Bureau of Shipping), BV-certified (Bureau Veritas), uye LR-certified (Lloyd's Register) — package ine zvitupa zvakawanda isingawanzoitiki kune mugadziri wepombi dze hydraulic wekuChina uye inopa mukana wakakura kuma workshop ekugadzira majekiseni ari kutsvaga kushandira cheni yekutakura zvinhu mugungwa nemugungwa.
Chitupa ichi chakanyorwa muchitupa chekupatsanura chepombi, chinopihwa nesangano rekuparura mushure mekuona bvunzo yemhando yepombi (bvunzo yekutsungirira kwemaawa chiuru padanho rekumanikidza nekuyerera, pamwe nekuyerwa nguva nenguva kwekushanda kwepombi, ruzha, uye kukwira kwekupisa). Chitupa ichi chinonyora: modhi yepombi, kumanikidzwa nekuyerera kwakayerwa, rudzi rwemvura yekuyedza nekupenya, nzvimbo yekupisa yemhepo, uye nhamba yekutarisa yechiratidzo chepombi — pombi inogona kuteverwa kumushumo webvunzo wega wega unoiswa kuhofisi yeinjiniya yesangano rekuparura. Kune workshop yekuisa injection molding pachibvumirano chinoda mapombi ehydraulic akasimbiswa, chitupa cheVicks T7 chinobvisa mari nenguva yekuronga bvunzo dzakasiyana dzechitupa chepurojekiti yega yega.
Maitiro Ekugadzirisa: Zvinofanira Kuzivikanwa neMuchina weKugadzira Injection Usati Wachinja Hydraulic Pombi
Kugadziriswa kwepombi yeT7 variable-displacement vane muchina wekugadzira injection — kutsiva pombi yekutanga yefixed-displacement — kunogona kuitwa muzuva rimwe chete rekushanda nenyanzvi ye hydraulic, muchina wacho uchidzoka kugadzirwa pazuva rinotevera. Maitiro aya ane zvikamu zvina: kubviswa, kuiswa, kuiswa, uye kugadziriswa.
Kubviswa (maawa 2-3):Oiri yemuchina inobviswa mvura uye inosefa (mafuta anozoshandiswazve mushure mekugadziriswazve - kuchinja mafuta zvizere hakudiwi kunze kwekunge mafuta aripo asvibiswa). Mitsetse yekusveta nekumanikidza yepombi yekare inobviswa, pombi-motor coupling inobviswa, uye mabhoti ekusveta pombi anobviswa. Chiso chekusveta chinocheneswa uye chinoongororwa kuti hapana maburi kana kukuvara kunogona kukanganisa pombi itsva.
Kuiswa (maawa maviri kusvika matatu):Pombi yeT7 yakaiswa paflange yekuisa pombi iripo yemuchina (zviyero zvekuisa zveT7 series — SAE-A 2-bolt flange yehukuru hwe16-125 cm³/rev, SAE-B 2-bolt flange yehukuru hwe160-237 cm³/rev — inoenderana neflange yekuisa yeVickers V-series, inova ndiyo yakajairika yemichina yakawanda yekuisa injection muSE Asia). Kubatanidza kwepombi-motor kwakarongedzwa mukati me0.050 mm TIR (yakayerwa pamucheto wekubatanidza — kusarongeka ndicho chikonzero chinowanzo konzera kutadza kushanda kwepombi nguva isati yakwana mushure mekugadziriswazve). Mapombi ekusveta nekumanikidza akabatana.
Kushanda (1-2 awa):Pombi yacho inozadzwa nemafuta akachena ehydraulic kuburikidza nepressure port (usambofa watanga pombi yakaoma yevane - mavane acho anozobata munzvimbo dzinotenderera mukati memasekonzi mashoma). Kugadziriswa kwecompensator kunogadziriswa kunoenderana nesystem relief valve yemuchina pamwe ne15-20 bar. Sisitimu inobviswa mhepo nekushandisa mashandiro emuchina nenzira yemaoko nekumhanya kwakaderera kwemasekonzi mashanu kusvika gumi.
Kugadzirisa (maawa 2-3):Magadzirirwo emuchina — kumhanya kwekuisa jekiseni, kumanikidza kwekubata, kumhanya kwekimpu, simba rekubudisa mvura — anosimbiswa uye anogadziriswa sezvinodiwa. Nguva yekupindura yepombi inoshanduka-shanduka (nguva kubva pachiratidzo chevharuvhu yekudzora kuenda kupombi inosvika padanho rekuyerera rinodiwa) inononoka zvishoma pane pombi inoshanduka-shanduka nekuti piston yekudzora yepombi inofanira kufamba isati yasvika. Kune akawanda maitiro ekugadzira jekiseni, musiyano wenguva yekupindura i50-120 milliseconds, iyo inogadziriswa nekugadzirisa kwemuchina kwematanho ekuita jekiseni.
Mibvunzo neMhinduro: Vatariri veMaworkshop eInjection Molding Vanotsvaga Mapombi eT7 Vane kubva kuChina
Mubvunzo 1: Chii chinonzi MOQ yepombi yeT7 vane order?
A: MOQ iyuniti imwe chete yehukuru hweT7 hwakajairwa (16-237 cm³/rev) uye chero sarudzo yekudzora yakajairwa (compensator yakajairwa, compensator inoona mutoro). Kune sarudzo dzekudzora dzakagadzirwa (nzvimbo dzakaoma dzekumanikidza, kuwedzera shaft kwakakosha, maflange ekuisa akakosha), MOQ iyuniti 5-10 paodha yega yega. Kune maneja weworkshop anoraira muchina mumwe chete, MOQ yeyuniti imwe chete inobvumira kuiswa kwekuyedza usati wazvipira kusimudzira fleet-wide.
Mubvunzo wechipiri: Ndezvipi zvimwe zvinhu zvandinofanira kuunganidza papombi yeT7?
A: Kiti yezvikamu zvinokurudzirwa zvepombi yeT7 inosanganisira: seti imwe chete yevane (mavane gumi nemaviri ekuchinjisa kusvika 100 cm³/rev, mavane gumi nematanhatu ekuchinjisa makuru), kiti imwe chete yekaturiji (kusanganisira cam ring, rotor, uye pressure plate assembly — boka rinotenderera rinopera nekufamba kwenguva), kiti imwe chete yeshaft seal, uye kiti imwe chete yecompensator valve (compensator spool nechitubu). Mutengo wekiti yezvikamu zvinochinjisa inenge 25-35% yemutengo wepombi uye inofukidza zvikamu zvinowanzo shandiswa panzvimbo imwe chete. Hupenyu hwebasa hwepombi hwakasimbiswa usati wagadziriswazve kwekutanga kukuru (kuchinjisa seti yevane) i10,000-15,000 maawa ekushanda.
Mubvunzo wechitatu: Ndeipi hydraulic oil viscosity range iyo pombi yeT7 inogona kubata?
A: Pombi yeT7 yakagadzirirwa mafuta ehydraulic ane mineral-based viscosity range ye20-400 cSt patembiricha yekupinda kwepombi. Kune tembiricha yekunze yeSE Asian (25-40°C), giredhi re viscosity yemafuta rinokurudzirwa iISO VG 46 (46 cSt pa40°C). Kune maworkshop anoshanda mumamiriro ekupisa kwakanyanya (pamusoro pe40°C), ISO VG 68 inopa ukobvu hwakakwana hwefirimu pamipendero yevane kudzivirira kusangana kwesimbi nesimbi panguva yekutanga. Pombi haifanirwe kushanda nemafuta ari pasi pe20 cSt - kumanikidzwa kwevane tip-to-cam ring kunodarika kugona kwekutakura mutoro kwefirimu remafuta, zvichikonzera kupera kwevane nekukurumidza.
Mubvunzo wechina: Pombi yeT7 inogara kwenguva yakareba sei pakati pekugadzirisa?
A: Hupenyu hwebasa hwakabvumidzwa hwepombi yeT7 isati yagadziriswa kekutanga i10,000-15,000 maawa ekushanda kuti irambe ichishanda padanho repamusoro (210 bar) uye kumhanya kwakarongwa (1,450 RPM). Padanho repamusoro (pasi pe150 bar) uye kumhanya kwakaderera (pasi pe1,200 RPM), hupenyu hwebasa hunosvika maawa 20,000-25,000. Kugadziriswa uku kunosanganisira kutsiva vane set, cartridge kit, uye shaft seal — muviri wepombi, chifukidziro chekupedzisira, uye compensator zvinoshandiswazve kwematanho matatu kusvika mashanu ekugadzirisa pombi isati yarega kushanda.
Mubvunzo 5: Ndezvipi zviratidzo zvinoratidza kuti pombi yeT7 inoda kugadziriswa?
A: Zviratidzo zvitatu zvinogona kutariswa nemushandi weworkshop: (1) kuwedzera kwenguva yekutenderera — kana kumhanya kweclamp kana jekiseni remuchina kukadzikira neanopfuura 10% panguva imwe chete yekumanikidzwa, kushanda kwevolumetric yepombi kwadzikira pasi pe80% uye seti yevane inoda kutsiviwa; (2) kuwedzera ruzha runonzwika — pombi yeT7 ine hutano inogadzira 65-75 dB(A) padaro remita imwe pakumanikidzwa nekuyerera kwakayerwa — kuwedzera ruzha kwe5+ dB(A) kunoratidza kupera kwetipi yevane kana cavitation (tarisa sefa yetsvina uye huwandu hwemafuta); (3) kukwira kwekushisa kwemafuta — kana tembiricha yemafuta emuchina wepombi ichidarika 80°C (yakayerwa pachiteshi chedhireni), kubuda kwemukati kwepombi kwakawedzera kupfuura miganhu yekugadzira uye kit ye cartridge inoda kutsiviwa.
Mubvunzo wechitanhatu: Ko Vicks Hydraulic inopa rutsigiro rwehunyanzvi here pakuisa kwekutanga kugadzirisa?
A: Ehe. Kune vanotenga kekutanga, Vicks inopa rutsigiro rwehunyanzvi vari kure kuburikidza nevhidhiyo (WhatsApp kana WeChat) yekuisa nekutanga. Chikamu chekutsigira chinosanganisira: ongororo yekuenderana kwepombi nemota, kugadziriswa kwekugadzirisa compensator, ongororo yekumanikidzwa kwesystem, uye kugadziriswa kwema process parameter emuchina. Kune maworkshop anoisa mapombi akawanda (10+ units), Vicks vanogona kutumira mainjiniya weapplication kuworkshop kunodzidziswa kwemazuva maviri panzvimbo uye kutanga kushanda.
Nezve Munyori: Demi Geinyanzvi yemhinduro dze hydraulic kuVicks Hydraulic, kambani yenyika yepamusoro-soro yakavambwa muna 2007, inyanzvi mukugadzira mapombi evane, masisitimu eservo, uye mhinduro dze hydraulic dzinochengetedza simba rimwe chete. Iine mitsetse mitanhatu inotungamira pasi rose yekugadzira uye kugona kwayo pagore kwe80,000+ vane mapombi, Vicks inoshandira maindasitiri anosanganisira emugungwa, emauto, uye eindasitiri otomatiki.
Zvemagariro evanhu:Facebook
Nguva yekutumira: Chikumi-22-2026