Vortex - Model MNK-X - Chemical Process Pumps- Brochure

Richter Vortex Type Chemical Process PumpsMNK-X, MNK-XB, SCK-XHigher solids contentsLarger and fibrous particlesGas-laden mediaMaterials: PFA, PFA-P,PTFE, PE-UHMW, PPConveyance of solids-containingand gas-laden mediaVortex pumps are preferably used for media with higher solidscontents. In addition, they have relatively good gas/liquidpumping capability.Media are conveyed gently for pump and medium• Solids contents of up to roughly 50 % by volume, depending on grain sizes and properties • Particle sizes of about 10 to 20 mm (2/5 – 4/5”), depending on the pump size • Long-fibre constituents • Gas contents of up to 5 % by volumePressure/temperature range • Operating temperature: -60 to +180 °C (-75 to 360 °F), depending on design and operating pressure • Operating pressure up to 10 bar or 16 bar (145 or 235 psi),depending on housing design• Version for elevated vacuum (at standstill) optionalFlanges• for connection to DIN 2533/PN 16, on request for connection toANSI or BSType code• with magnetic drive, frame-mounted MNK-X/...• with magnetic drive, close-coupled MNK-XB/...• with mechanical seal, frame-mounted SCK-X/...• PFA/PTFE lining .../F• PE-UHMW lining .../E• PP lining .../PAntistatic and PFA-P highly permeation resistant linings onrequest.MNK-X, MNK-XB, SCK-X2Solids-containing mediaCentrifugal pumps of standard designs in-volve the risk that solids may clog the impellerchannels – especially with closed impellers –or cause increased wear in the space be-tween the impeller and the housing. Richtervortex pumps have large free spaces in thehousing and the medium rotates in the vane-less area Gentle conveyance of media withfibrous or crystalline constituents.Fields of applicationGas-laden mediaStandard centrifugal pumps can conveyliquids with a gas content of up to 3 % byvolume. If the gas content is higher, deliveryfails and is not resumed even after the gasvolume has been reduced: The pump mustbe shut down. By contrast, Richter vortex pumps can alsoconvey gas contents of up to 5 % at a mini-mum flow rate of about 20 % Qoptimum.If the gas content exceeds 5 %, the deliveryhead drops sharply until delivery stops.However, delivery continues again imme-diately after a reduction in the gas volumewithout the pump having to be shut down.Vortex pumps as mixersWhen a vortex pump is used a mixer, whichin many cases would otherwise be necessary,can be dispensed with: As a result of thestrong circulation currents, the liquids to beconveyed are intimately mixed inside thepump and then discharged.Favourable cavitation behaviour Vortex pumps exhibit excellent cavitationbehaviour. Although cavitation occurs some-what earlier than in standard centrifugalpumps, the cavitation curves become muchflatter. The pump therefore maintains delivery at a slightly reduced head for longer than acomparable standard centrifugal pump. No cavitation damage is to be expected ascavitation would occur in the liquid-filled freespace of the housing. Flow ratesThe Q/H performance curve of a vortex pumpruns comparatively flat: The delivery head issmaller in the lower rate range than with astandard centrifugal pump but higher in theupper range.Reliable: magnetic drive or mechanical seals3For detailed sectional drawings and descriptions of the basic pumps, refer topublications MNK and SCK. For Richter mechanical seal RG-4 and plainbearings SAFEGLIDE® PLUS please request special literature.330441524210161211 213159158529401339230100330858859545122Series MNK-XB with magnetic drive, close-coupledSeries SCK-X with internal non-metallic double mechanical sealVortex pump MNK-X with magnetic drive, frame-mounted design(alternatively close-coupled design MNK-XB up to size 80-50-200). In the event of higher solids content, flushing of the can chamber must be provided (not illustrated here, see cover photo and publication No. 657).? Pump housing • Ductile cast iron EN-JS1049/ASTM A395 withthick lining made of PFA/PTFE, PE-UHMW, PP• Connection for housingdrain as standard • Highly permeation-resistant and antistaticlinings on request? Semi-open vortex impellers • Positioned outside themain flow • Radial vanes • Large metal core forincreased stability • Secured against detach-ment in the event ofstart-up in the wrongdirection of rotation • Back vanes reduce axialthrust forces162345Alternative to the vortex magnetic drive pump MNK-X(frame-mounted) or MNK-XB (close-coupled): Mechanical seal vortex pump SCK-X of frame-mounted design • Internal or external mechanical seal ?• Heavy-duty design also for high and varying loads,minimal shaft deflection • Shaft sleeve ? Al2O3, SSiC, Hastelloy etc.Magnetic drive pumps • Plain bearings ? made of pure SSiC and optionallywith SAFEGLIDE® PLUS: protection against damage incase of dry-running • Non-metallic, eddy-current-free can systems ? madeof CFRP/PTFE, can monitoring connection on request • A special plain bearing and can flushing systemcan be provided, depending on the content and typeof solids (see illustration on cover)MNK-X, MNK-XB, SCK-XPresented by:Flow rates4Publication No. 690en 05.09 © Richter Chemie-Technik GmbH. Subject to change without notice. Printed in Germany.Higher delivery capacities on request. Richter vortex pumps are also available for 1,750 and 3,500 rpm for flows up to 200 m3/h (880 US gpm) and TDH up to 120 m (395 ft). For 60 Hz curves please contact factory.25-25-12550-32-12550-32-20025-25-16080-50-25065-40-20080-50-200125-80-20050-32-16080-50-16020 30 40 100 15010 60 230 350 880 (US gpm)5305906050403025201512108675(m) (ft)2752001501208060402030200805030201510754320,1 120 (m3/h)Capacity – 2900 rpm (50 Hz)Total head – 2900 rpm (50 Hz)* Antistatic and PFA-P highly permeation-resistant linings available on requestItem Designation Standard design*100 Pump housing Ductile iron EN-JS 1049 ASTM A395/PFA, PTFE, PP, PE-UHMW122 Blind cover Ductile iron EN-JS 1049 ASTM A395/PTFE158 Can insert PTFE159 Can CFRP carbon-fibre compound161 Back plate Ductile iron EN-JS ASTM A395/PFA, PTFE, PE-UHMW210 Pump shaft Stainless steel211 Pump shaft Stainless steel/PFA213 Drive shaft Steel230 Impeller PFA, PE-UHMW ductile cast iron core330 Bearing pedestal Ductile iron EN-JS 1049 ASTM A395339 Plain bearing Ductile iron EN-JS 1049 ASTM A395/pedestal PFA, PE-UHMW401 Distance ring Stainless steel/PTFE, PE-UHMW441 Mechanical seal housing Stainless steel524 Shaft sleeve Al2O3, SSiC etc.depending on specifications529 Bearing sleeve Pure SSiC, on request withSAFEGLIDE® PLUS545 Bearing bush Pure SSiC, on request withSAFEGLIDE® PLUS858 Drive magnet assembly Steel/permanent magnets859 Inner magnet assembly Steel/PFA, permanent magnetsComponents and materialsRichter and SAFEGLIDE®: TM Richter Chemie-Technik GmbHRichter Chemie-Technik GmbHOtto-Schott-Str. 2, D-47906 Kempen, GermanyTel. +49 (0) 2152/146-0, Fax +49 (0) 2152/146-190www.richter-ct.com, richter-info@idexcorp.com50-32-12525-25-12525-25-16050-32-20080-50-25050-32-16065-40-200125-80-20080-50-20080-50-160(US gpm)(m) (ft)(m3/h)Capacity – 1450 rpm (50 Hz)Total head – 1450 rpm (50 Hz)7060504030201052520151210876543210,1 2 3 4 5 7 10 15 20 30 40 50 60 90 12023010 20 30 40 60 100 150 400