GB386432A - Improvements in or relating to centrifugal pumps - Google Patents

Abstract

386,432. Centrifugal pumps. DAMAN, A. C., 1419, 17th Street, Denver, Colorado, U.S.A. Jan. 1, 1932, No. 65. [Class 110 (i).] A centrifugal pump has an open-topped reservoir communicating through a restricted opening with a bowl in which operates an impeller mounted on a shaft supported in bearings above the liquid level in the reservoir, and carried by the reservoir. The reservoir may be combined with the bearing structure and hinged to a base which contains the bowl, as shown, or the bearing structure may be pivoted to the reservoir. Alternatively, the reservoir and bearing structure may be supported on legs and the bowl may be removably connected under the reservoir. In the form shown, the reservoir 11 is hinged at 12 to a base 10 which supports the bowl 14 in which an impeller 15 rotates. The reservoir is clamped in the closed position by wing nuts 13 and pivoted bolts, but may be hinged back into the position indicated in dotted lines to give access to the impeller and bowl. Liquid is fed from the reservoir 11 through a plate 16 to the bowl 14. The bearing sleeve 21, which carries a thrust bearing 20 and an adjustable radial bearing 19, is supported by a bracket member 22 bolted to the top of the reservoir 11 and this bracket also supports an adjustable mounting plate 30 to which an electric driving motor 26 is attached, the rotor shaft 18 being driven through belt gearing 29. The impeller and the parts of the bowl in contact therewith, as well as the parts of the casing exposed to the scouring action of the material being pumped, may be coated with rubber, and a number of discharge outlets may be provided to reduce the path travelled by the material being treated before it reaches an outlet. A ball valve 34 in the inlet 38 may be provided to regulate the flow into the pump reservoir. The ball valve is carried in a socket 35 pivoted upon a frame 36 which rises and falls with an annular float 37.