. Electric railway journal . End Elevation and Cross-Section of Rotary Air Pump accompanying engraving. This cut shows a Rotrex airpump and a centrifugal circulating pump direct connectedto opposite ends of the shaft of a high-speed vertical engine. The construction of the Rotrex air pump is very consists of a light cylindrical casing and a single rotoreccentrically mounted on a heavy steel shaft carried inring-oiled outboard bearings which are independent of the. Rotary Air Pump and Circulating Pump Driven by Single Engine stuffing boxes. Division between the suction and dischargein
. Electric railway journal . End Elevation and Cross-Section of Rotary Air Pump accompanying engraving. This cut shows a Rotrex airpump and a centrifugal circulating pump direct connectedto opposite ends of the shaft of a high-speed vertical engine. The construction of the Rotrex air pump is very consists of a light cylindrical casing and a single rotoreccentrically mounted on a heavy steel shaft carried inring-oiled outboard bearings which are independent of the. Rotary Air Pump and Circulating Pump Driven by Single Engine stuffing boxes. Division between the suction and dischargein the pump cylinder is made by means of a radius camwhich is carried in independent hearings and is operatedby a connecting rod and crank arm from the rotor shaftoutside of the pump. By this arrangement internal con-tact is entirely eliminated. The rotor operates with a closeclearance between the bore of the pump and the cam maintains a close clearance with the rotor. An ingenious arrangement of ports provides for a water seal of the cleara nee spaces at all times. This produces a high vacuum, not 6l2 ELECTRIC RAILWAY JOURNAL. I Vol. XXXIV. No. 14. possible with surface contact or sliding fits. No suctionvalves are used, thus eliminating one source of expensivemaintenance. Due to the high speed at which it is operatedthe over-all dimensions of the pump are small. The pumpsare made in sizes from 50 hp to 5000 hp in single larger sizes two units are mounted o
Size: 1969px × 1269px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
