Patent GB-960806-A (GB)
Title: Flexible body rotary fluid pump
IPC: F04B1/04
Filed: 1963-03-21
Abstract: 960,806. Rotary pumps; reciprocating pumps. CYRUS WM. RICE & CO. March 21, 1963 [March 29, 1962], No. 11313/63. Headings F1A and F1F. A rotary fluid pump of the flexible chamber, or tube, type comprises a disc 1 (Fig. 1) of elastomeric material e.g. synthetic rubber, bonded to discs 3, 4 which are secured to shafts 22, 26, and slidably engage with further discs 10, 11, the discs 1, 3, 4 being rotated when the shaft 20 is driven by an electric motor or prime mover. The discs 10, 11 are attached to plates 12, 13 which are coupled to one another by tie rods 17, 18 carrying nuts 31, 32, whereby the plate 13 is inclined toward the other plate, as shown. Passages 2, 6 are included in the discs 1, 3, 4, the passages 6 being periodically register with arcuate ports (Fig. 3, not shown) in the faces 7 of the discs 10, 11 as the shaft 20 is rotated. An inlet port 15 communicates with the arcuate port in the disc 10 and an outlet port 16 communicates with the other arcuate port in the disc 11. The discs 3, 4 thereby serve as valve members for the inlet and outlet sides of the passages 2, respectively. These discs may be made of glass and the discs 10, 11 may be made of P.T.F.E., the disc 1 being bonded to the discs 3, 4 by vulcanisation or cement. Modifications of this embodiment are described. In the first of these modifications (Figs. 4, 5, not shown) the-shaft 20 comprises two parts joined by a universal coupling; in the second modification (Figs. 11, 12, not shown) the disc 1 is replaced by an annular flexible body comprising a plurality of radial chambers; in the third modification (Fig. 13, not shown) the plates 12, 13 are replaced by a pair of cylindrical housing members pivotally attached to one another by diametrically opposite pins; and in the fourth modification (Fig. 14, not shown) the plates 12, 13 are coupled to one another by arms attached to these plates, adjacent arms being joined by pins. Alternatively, the pump comprises a plurality of tubes 72 (Figs. 6, 7) made of elastomeric material and mounted on a rotatable disc 71, the ends of the tubes engaging with extensions 75 of passageways 76 which when the disc rotates periodically register with ports 41, 42 in a stationary tapered plug 40 wherein inlet and outlet passages 43, 44 are also provided. The disc 71 is integral with a cylindrical member 67 which engages with a drive shaft 68 and is mounted in a bearing 64 ... 66. The tubes are bonded to recesses 72 in the periphery of the disc 71 and are similarly attached to a ring 61 carried by a spider 60 which is supported by a bearing 55 ... 57, this bearing being disposed eccentrically with respect to the plug 40 and the other bearing, whereby the tubes are periodically compressed. The bearing 55 ... 57 is mounted in an abutment ring 48 which is slidably attached to a standard 37 and displaceable in a vertical direction by a screw 52 ... 54. The disc 71 may be made of glass and the plug 40 may be made of P.T.F.E. In a further alternative embodiment (Figs. 9, 10), a plurality of flexible bodies 99 are bonded to frusto-conical valve members 96, 100, the innermost member 96 being rotated by a drive shaft 94, and mating with a stationary tapered member 88 in which an inlet port 105 and an inlet passage 106 are located. The outermost valve member 100 mates with eccentrically disposed member 86 wherein an outlet port 107 and an outlet passage 108 are located, and rotates with the member 96 and bodies 99. The eccentricity of the member 86 is variable by means of a screw 92, 93 attached to a standard 81 upon which the member is slidably mounted. Both of the valve members may be made of glass.