sealed close coupled pumps

Transcription

1 sealed close coupled pumps centrifugal self-priming

2 1 - and are different configurations of the same range of centrifugal axle pumps, self-priming which offers reliability in use. Specifically designed to handle chemical and corrosive fluids. The whole structure has been conceived in order to make all the components extremely resistant to the aggression, even in the smallest parts. The pump is close coupled and the parts are supported by the motor, therefore the dimensions are restricted. Front suction, central upward delivery, mechanically sealed with sliding counterfaces (with an external, single or double flush) or radial elastic ring. The motors with specially designed shaft and flange are usually IP 55 protected, with Class F Insulation, 20 voltage, three phase with Hz frequency. This range is close coupled, with pump casing supported directly by the motor. These are optimal when needed to transfer chemicals with a specific gravity up to 1,8. Three different motors are available for each model. The impeller is open, so there is no contraidication to transfer liquids containing solids in suspension. Self-priming without the need of having check valves. Thanks to the specific structure, after the first filling, they are able to self-prime automatically even in presence of empty pipes. Negative suction head of 5 meters (to be reduced according to the specific gravity). As in the range, there are different motors available and the impeller is open

3 - 2 GENERAL PERFORMACE CURVES U.S. (gpm) r.p.m. - Hz Head (m) Head (ft) m h Capacity L1' NOTES. All curves are referred to: water at 20 C - viscosity 1 E - specific gravity 1 kgdm PUMP SPECIFICATIONS table 1 PUMPS Ø inlet (BSP) Ø outlet (BSP) ISO flange ANSI flange DeA DeM NDA NDM NDA NDM 1 f 1 m 1 f 1 m 2 f 1 2 m f 1 f f 1 2 f 2 f 2 f 2 2 f 2 2 f Motor power kw 0,75 1, ,75 1,1 Phases Std. voltage Motor protect. N V IP 0 5% 55

4 - THE MATERIALS table 2 Version WR WF FC QR Reinforced Polymers PVDF UPVCPVDF Min temp. -5 C (2 F) -5 C (2 F) -0 C (-22 F) 0 C (2 F) Max temp. C (176 F) C (176 F) 110 C (20 F) C (10 F) Environment temp. 0 C (1 10 F) 0 C (1 10 F) -20 C (- 10 F) 0 C (1 10 F) WR - The main resin is PP (polypropylene) reinforced with 0% glass fibre. It has a good mechanical resistance and has good dimensional stability when hot. WF - The main resin is PP (polypropylene) reinforced with 0% fibre glass. The main components are in PVDF because this material has got a higher resistance to abrasion and use. FC - The main resin is PVDF (Vinylidene polyfluoride) reinforced with 20% fibre glass. Good resistance to abrasion and is also mechanically resistant. QR - Main resin is PVC (Polyvinyl chloride). Other parts are made in PVDF. This version is particularly suitable to chromic acid, sulphur nitrite mixtures, sulphuric acid, sodium hypochlorite, turpentine and ozone. ELASTOMERS table Version V E K Material EPDM F Description Fluorine elastomer Ethylene-propylene rubber Perfluorelastomer THE CONSTRUCTION OF MECHANICAL SEALS table MECHANICAL SEALS SEAL MODEL ROTATING PART FIXED RING BELLOWS 2^ ROTATING PART 2^ FIXED RING External - Single T1 T T PTFEGFR PTFE T5 EPDM T8* T6 EPDM Double T9 T10 EPDM * Radial seal T1 T T T6 SPECIFICATION OF MECHANICAL SEALS table 5 Condition of work Model Tipology Code Clean chemical mediums max pressure bar Clean chemical mediums suspended solids Concentrated acids no suspended solids Clean chemical mediums hard suspended solids General purpose Clean chemical mediums low cost Suspended solids Hard suspended solids salts T1 T T T5 T6 T8 T9 T10 Single external, elastomer bellows Single external, elastomer bellows Single external, PTFE bellows Single external, elastomer bellows Double flushed, elastomer bellows Elastomeric radial seal Double flushed, elastomer bellows Double flushed, elastomer bellows

5 - THE CONSTRUCTION OF PUMPS table 6 Versions Pump casing Bracket Impeller Ogive Diaphragm Sleeve Gasket Baseplate Screws (1),(2) Upon request: (1) EPDM, (2) F WR WF FC PP GFR-PTFE (1) PP GFR-PTFE (1) PVDF PVDF (1),(2) QR PVC GFR-PTFE GFR-PTFE (1),(2) TECHNICAL SPECIFICATIONS Stable dimension and strong structure guaranteed by the molding of thermoplastic materials; these features are insured by the thickness of each part. 1 2 Bracket with large windows in order to void accumulation of corrosive vapours 2 21 with T mechanical seal Solid plastic open impeller with metal core to allow frequent start-stop cycles 6 7 Diaphragm: special building procedure limits the damages in case of dry running and allows a quicker intervention and easy maintenance 1 5 Sleeve: a good protection of the shaft with T6 double mechanical seal 6 Simple construction: only two parts (casing and bracket) carry out all the hydraulic and mechanical process by reducing the surface of static sealage (OR) Total interchangeability of the most common mechanical seals. There are different types according to the liquid pumped 8 Screws and nuts in stainless steel with T mechanical seal

6 5 - IDENTIFICATION LABEL table WR V T1 B kw SERIES CHOOSE MODEL MATERIALS V = E = EPDM K = F INTERNAL STRUCTURE B = thr. BSP Z = flange ISO-ANSI MOTOR POWER SERIE MODEL VERSION O-ring MATERIALS MECHANICAL SEAL CONNECTIONS kw WR V B 0, WF E Z 1,1 FC K INSTALLATIONS PROCEDURE table 8 If the specific gravity is more than 1 Kgdm the maximum suction head is to be reduced (see diagram 1). If the temperature is more than 20 degrees Celsius the maximum suction head is to be reduced (see diagram 2). To self-prime liquid with considerable emission of fumes at normal condition (1 atm; 20 C) is permittable with limited suction head (e.g. HCL). Maximum value of kinematic viscosità iis 10 cst. An increase of the nominal diameter of the pipes involves an extension of the self-priming time. In presence of suction horizontal pipes the priming time is extended (e.g. at Ha = 5 m with horizontal pipe lenght of one meter the priming time is of 5.2 minutes [only.2 min. with vertical pipe]). Planning the complex system do keep the priming time less than 6 min. ad the NPSH value more than 0, atm. (for liquids at room temperature). Siphon-shaped pipes (filled with liquids) could hamper the air flow during the priming phase. In the suction tank the surface of the liquids must be at atmospheric pressure. The delivery pipe outlet has to work at atmospheric pressure. (a) (a) Min. 0,5 m HA HA table 9 Suction head HA (m.c.l.) Diagram 1-6 γ = γ = 1, γ = 1,6 γ = 1,8-2 γ = Priming-time t (min.) Example: liquid: NaOH 2 Bè (γ = 1,1 Kg dm) T= C plant: HA = 2 m suction head check diagram 1: HA max (rif.: γ = 1,1 Kg dm) =,5 m diagram 2: rh (rif.: T = C) = 0,7; HA max =,5 x 0,7 = 2,5 m (> 2; OK). Please contact us in order to give you our technical support and assistance. γ = (Kgdm) specific gravity of the liquid. TS = boiling or decomposition temperature ( C). rh Coefficient of reduction of 1 0,8 0,6 0, 0,2 Diagram 2 Ts = 100 Ts = Ts = Temperature of liquid T ( C)

7 - 6 IDENTIFICATION LABEL table WR V T1 B kw SERIES CHOOSE MODEL MATERIALS V = E = EPDM K = F INTERNAL STRUCTURE B = thr. BSP Z = flange ISO-ANSI MOTOR POWER SERIE MODEL VERSION O-ring MATERIALS MECHANICAL SEAL CONNECTIONS kw WR V B WF E Z FC K 0,75 1,1 QR DIMENSIONS table 11 KM DnM P KM DNM Ø d x z P G L DeM a1 Ø d x z DeM h1 h Ø d x z h1 h2 DeA h2 h1 DaM h Ø d x z DNA KA s1 h n1 s2 m1 r rb a2 B2 B L L1

8 Production Program TMB range Installed powers: W Bodies materials: GFRPP Magnetic drive AM range Installed powers: kw 0,18 0,55 Bodies materials: GFRPP - E-CTFE Magnetic drive ROUTE range Installed powers: kw 0,55 Bodies materials: GFRPP - CFFE-CTFE Magnetic drive FRONTIERA range Installed powers: kw 0,55 15 Bodies materials: PP - E-CTFE Magnetic drive E range Installed powers: kw 15 Bodies materials: PP - E-CTFE ZGE range (ISO 2858) Installed powers: kw 0,55 00 Bodies materials: PP - PVDF - PVC - PE HMW and ZGA range Installed powers: kw 0,75 11 Bodies materials: PP - PVDF - PVC Self priming range Installed powers: kw 0,75 11 Bodies materials: GFRPP - CFFPVDF Lenghts mm K range (KM and KMS) Installed powers: kw 0,75 22 Bodies materials: GFRPP - PVDF - PVC Lenghts mm K range (KG and KGS) Installed powers: kw 0,75 7 Bodies materials: GFRPP - PVDF - PVC Lenghts mm EQUIPRO range Available motor power: 0, kw Material versions: GFRPP PVDF Lenghts mm LAGOON range Range: from 0 to.000 lh Filter materials: PP - PVDF Pump materials: GFRPP - CFFE-CTFE Member of AIB associazione industriale bresciana IT - 1 BRESCIA - Via Labirinto, 159 Tel Fax Export dpt. Tel Web: export@argal.it It is the policy of ARGAL to always improve its products and the right is reserved to alter specifications at any time without prior notice. No part of this publication may be reproduced in any form or any means. 6