| 摘要 |
407,084. Centrifugal machines. SHARPLES SPECIALTY CO., 23rd Street, Philadelphia, U.S.A.-(Assignees of Ayres, A. U.; Chestnut Hill, Pennsylvania, U.S.A.) July 5, 1933, No. 19075. Convention date, Sept. 12, 1932. [Class 23.] The substances undergoing treatment in a centrifugal separator are caused to pass through a zone of high pressure between the feeding and discharge zones of the bowl, in order to prevent the suction from causing a direct flow of gases through the bowl. The casing 11 is supported on the frame 10 and carries a cushioned drag mechanism at the bottom of the bowl 20 of the type described in Specification 330,158, [Class 23]. The feed connections from the pipe 12 are also of the kind described in that Specification and a disc 15 is arranged to spread the liquid supply over the wall of the bowl. The reduced neck 23 at the head of the bowl passes through the cover 24 which receives the discharge from the bowl through the passage 26. A sealing chamber 27 is formed in the base of the head 22 and is fitted with a discharge weir 28 having a thin lip 29 over which the discharging liquid passes. A ring weir 30 is secured at the top of the head 22 and controls the level of liquid within the bowl 20 and the chamber 27. A sealing member 32 in the chamber is secured by a threaded extension 33, and has an annular flange 34 of a larger diameter than the internal diameter of the weir 30 so that it constantly dips into the liquid and acts as a seal. This prevents gases from escaping with the liquid. Wings 35 assist the acceleration and deceleration of the liquid in its passage round the flange. The weir 28 may be replaced by a weir 36 as shown in Fig. 6, the extended edge 37 of zig-zag form acting to reduce turbulence. A seal of a similar nature may be applied to a machine for separating two liquids from each other. |
