| 摘要 |
<PICT:0820176/IV (a)/1> An apparatus for homogenizing viscose by causing solution of undissolved particles of cellulose xanthate in the viscose comprises a tube closed at one end and having distributed over its entire length openings through which the viscose can be sprayed under pressure, a hollow drum concentrically surrounding the tube, the drum being rotatable at high speed and having on its inside wall pointed baffle members directed towards the axis of the tube, on to which members viscose sprayed through the openings of the tube impinges, openings between the members for the passage of the viscose through the wall of the drum, and a stationary closed container surrounding the drum and having at the bottom a discharge opening for the viscose. As shown in Fig. 1, viscose is forced at a pressure of 5-25 atm. gauge by means of a pump 1 through a stationary straight tube 2 having openings 3 into a drum 4 rotating at 3000-8000 r.p.m. The openings 3 may be slot-shaped and arranged parallel or at right-angles to the axis of the tube 2, and are distributed over the entire length of the tube. The jets of viscose discharged from the openings impinge on conical pointed elements 5 which act as baffle members and which project from the inner cylindrical surface of the drum towards the p axis of the tube 2. Any relatively coarse undissolved particles in the viscose are thereby disintegrated and dispersed in the viscose, which by centrifugal force is discharged through openings 6 in the cylindrical wall of the drum on to the walls of the stationary casing 7 surrounding the drum. The homogenized viscose is withdrawn from the casing through the bottom outlet 8 by means of a pump and can be readily filtered. The openings 6 either have the shape of truncated cones narrowing in the outward direction or are of cylindrical shape with a flared inlet. In a modification of the apparatus the drum is concentrically surrounded by a second larger drum of similar design and the openings in the cylindrical wall of the second drum may be narrower than those in the wall of the inner drum. The second drum is surrounded by a fixed casing as in the form of the apparatus above described. The directions of rotation and speeds of the two drums are preferably different, or the drums may be rotated in the same direction but at different speeds.
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