GB1029353A - Improvements in or relating to a liquid ring gas - Google Patents

Abstract

1,029,353. Liquid-ring pumps. GUY. F. ATKINSON CO. Aug. 21, 1964 [Aug. 23, 1963], No. 34427/64. Heading F1C. In a single or double-acting liquid-ring gas pump having a single or a pair of pumping chambers 48, 49, Fig. 2, the or each chamber has a rotor 44, 44<SP>1</SP> having a length to diameter ratio exceeding 0À5, a shroud plate 71, 71<SP>1</SP> in the rotor intermediate its ends extends around the rotor from the inner to the outer diameters of the blades, and a single ported member 80, 80<SP>1</SP> concentric with the pump shaft serves the whole length of the rotor. The two rotors have a common hub 42. Considering the right-hand one of the two similar pump units, gases are drawn into the two lobes 20, 21, Figs. 2 and 3, of chamber 48 via inlet 25, chambers 50, 52, ports 101, 103, longitudinal channels 120, 121 and ports 105, 113 (not shown) in the member 80, and are expelled via ports 106, 114 (not shown), longitudinal channels 122, 123, ports 102, 104, chambers 60, 62 and outlet 30. A Z-shaped dividing wall 55, 56, 65 separates the inlet chamber 52 from the outlet chamber 62. The member 80 is sealed at 83 and 86, and is bolted to a flange 87 of a semi-circular bearing carriage 35. Sealing and replenishing liquid supplied through an inlet 125 passes through passage 124 into a space 93 around the shaft 40. The space 93 communicates via passages 126 with a space 77 at one end of the rotor, and via passages 74 in the hub 42 and tubes 75 with the chamber 48. An alternative embodiment having a single pumping chamber, Fig. 13, has a rotor with two intermediate shroud plates 153, 154 each carrying four equally spaced tubes 155 receiving replenishing liquid from a space 165 via passages 161 and peripheral grooves 163. Sealing liquid is delivered to a space 166 at the hub end of the rotor via axial passages 146 in the hub.