The wet parts, include impeller, liner, throatbush, frame plate liner insert, casing, etc., are very easily worn-out components because they work under longtime impact of abrassive and corrosive slurries in the high speed. For the long service life of pump parts, the material plays an important role here.
Tobee® Pump is always making continuous optimization of materials like Cast steel, EPDM, Hypalon, Hastelloy, CD4MCu, Viton, Fluoroplastic, Ceramic, Bronze, Titanium, Aluminum and other anti-abrasive & corrosive materials for various applications, Such as impeller: EN-GJL 250, 1.4460 and 1.4517, casing/casing cover: EN-GJL 250 and 1.4460, volute casing: EN-GJL 250, EN-GJS-400-15 and 1.4460, bearing housing EN-GJL 250 and 1.4468, front and rear lining: 1.4460 and 1.4517, stuffing box body EN-GJL 250, 1.4460 and 1.4408, shaft: 1.4021 & 1.4462 and 1.4404 & 1.4439, etc.
ACP Centrifugal Pump Design:
Impeller(230)
• Accelerating the medium by charging it with energy.
• Semi-open impeller with vanes on the back.
Spiral casing (102)
• Guiding the medium with a favorable flow pattern, converting speed energy into pressure energy.
• Pressure-sealed pump casing with delivery and suction channels.
• Suction and delivery flange.
• Holds the bearing housing with bearing assembly, shaft and impeller.
Pump shaft (211)
• Holding the impeller, shaft seal, bearing assembly and coupling.
• Transmitting the drive energy to the impeller and thus, to the medium.
• Sturdily dimensioned drive shaft.
Bearings
• Interface between stationary and rotating parts. Absorption of axial and radial forces.
• Impeller side: Two angular contact ball bearings (321.1) with steel cage.
• Drive side: One deep groove ball bearings (321.2) with steel cage.
Shaft seal
Depending on operating requirements, there is a choice of eight different shaft seals:
• Cartridge mechanical seal - single
• Cartridge mechanical seal - double
• Standard cartridge mechanical seal - single
• Standard cartridge mechanical seal – double
• Single standard mechanical seal
• Tandem mechanical seal
• Stuffing box packing
• Dynamic shaft seal
Tobee™ Andritz Interchangeable Pump Spare Parts Design Features:
Bearing assembly--A large diameter shaft with short overhang minimizes deflection and contributes to long bearing life. Only four through bolts are required to hold the cartridge type housing in the frame.
Liners--Easily replaceable liners are bolted, not glued, to the casing for positive attachment and ease of maintenance. Hard metal liners are completely interchangeable with pressure molded elastomers. Elastomer seal rings back all liner joints.
Casing--Casing halves of cast or ductile iron with external reinforcing ribs provide high operating pressure capabilities and an extra measure of safety.
Impeller--front and rear shrouds have pump out vanes that reduce recirculation and seal contamination. Hard metal and molded elastomer impellers are complete interchangeable. Cast in impeller threads require no inserts or nuts. High efficiency and high head designs are also available.
Throatbush--Wear is reduced and maintenance simplified by the use of tapered mating faces to allow positive accurate alignment during assembly and simple removal.
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