Патент USA US2406618код для вставки
Aug. 27, 1946. ' _ K. o. LINDGREN . DEVICE FOR SORTING, DEHYDRATING, OR WASHING 2,406,618 0F SIIISPENSIONS 0F ,FIBROUS MATERIALS _F‘-iled. Feb. 4,1943 2 Sheets-Shéet 1 564 INVENTOR= . KARLOLOF LINDGREN . ' a, ATTORNEYS. "" Aug. 27, 1946. v , » K. O. LINDGREN 2,406,618 DEVICE FOR SORTING, DEHYDRATING, OR WASHING ‘ Filed Feb. 4, 1945 ‘ 15 - 0F SUSPENSIONS OF FIBROUS' MATERIALS 2 Sheets-She'ét ,2 _ , ll _______ __J / 4 fI i / ZII I I rl/iI,fl/n Z/ /////////I/II//IlII/I/I/ / m INVENTOR‘ Hum agm MMA u Y,. vK m 9% .N. . ‘r 2,406,618 Patented Aug. 27,1946 mm OFFICE ' 4 'pEvIoE’FoR-jsoR'riNG, DEHYDRATING, OR WASHING or :sUsPENsroNs or 'FIBROUS MATERIALS -1 ' ' '.lKarl " to. OlofLindgreri,1Djursholm,,Sweden,‘assignor AktiebolagetfA. Ekstroinsf'j‘Maskinaffar, , ,, _ _, , Stockholm,‘ Sweden,‘ “ Sweden, ~ a joint-‘stockfcompanyof; > , - and Nils Walfrid‘ Jonsson,'¢Lidlngo', , ' ~» / Sweden _ Application February 4, 1943, Serial No. 474,652 ' In Sweden January 13, 1942 a 7 2 Claims. 1 (CI. 92—36) 2 I Vibrating screen members which are exclusive ly elastically mounted have of late been com monly used in the cellulose industry for sorting, dehydrating or washing of suspensions of ?brous material, and have proved-to be of great practical value. 5 g to the drum may be such that thedrum does not only obtain a vibratory motion but is also caused to rotate, the vibratory motion cooperating with the actual friction and liquid resistances. From the suspension charged into the con tainer I liquid, possibly with some of the sus pended material, passes through the screen shell It has now appeared to be very advantageous to use according to the present invention an ap paratus in. which in a stationary container a ro of the drum into the interior of the drum, leaves throughthe outlet l2 and further through the tatably mounted screening drum is suspended in 10 conveyingjtrough l3, whereas ?brous suspension not passing through the screen surface leaves through the shutter 5 through the outlet 6. In order to clean the screen shell of the drum yokes supported by elastic members and adapted to be vibrated by rotation of two shafts actuat ing the yokes and carrying eccentric weights, and a spraying pipe l4, which is connected to a con to transmit such motion to the drum. An embodiment of the invention is illustrated 15, duit 15 for supplying washing liquid, extends in the accompanying drawings, in which Figs. 1 along the screen shell at the top within the drum. At the spraying the material sticking to the out and 2 are two different side views of the device. Fig. 3 is a top view of the device. Fig. 4 is a sec side of the drum will be led to a collecting cham tion on line C--C in Fig. l. ber 16 provided above the container, from where ’ A screening drum 2 is rotatably mounted in a 20 it is discharged through a conduit IT. The described device may be modi?ed in several respects. The drum need not be cylindric but drum traverse packings in the walls of the con shaped in some other way, for example conical tainer. On one side of the drum there is to the or polyhedric. The elastic suspension may be container I connected an inlet 3 for the ?brous suspension, and on the other side of the drum 25 obtained in some other way than by screw springs. the container is provided with a shutter 5 ad The invention may also be carried out in such a way that the suspension is charged into a , justable in the vertical direction by means of a rotating screening drum at its one end, whereby lift device 47. Fibrous suspension can ?ow oil to the unscreened material leaves at the other end an outlet 6 over the upper’ edge of ‘said shutter 5, the drum thus having its major portion sub 30 of the drum, and the screened liquid possibly to stationary container I. The end portions of the gether with ?brous material suspended therein, merged in the liquid suspension the level of which passes to a container surrounding the drum from is controlled by the upper edge of said shutter. where it is then discharged. At the bottom of the container I there is a valve 1, through which thicker impurities gathering on The invention is of particular importance in the bottom can be removed. 35 the manufacture of paper pulp but it may be used The ends of the drum are supported at each with advantage also in treating of other ?brous side by a yoke 8, and in the two yokes there are suspensions. , mounted the two shafts ,9, laterally spaced from Having now described my invention, what I the central axis of rotation of the drum and pref claim as new and desire to secure by Letters erably arranged symmetrically, one on each side 40 Patent is: of the drum. The yokes 8 with the shafts Srest 1. An apparatus for sorting, dehydrating or on screw or helical springs [0. Each shaft 9 is provided with an eccentric weight or weights, and is driven via an elastic coupling by an electric motor H. The two rotatable shafts are adapted 45 to operate in time and preferably they may be driven by electric synchronized motors. A vi brating motion is imparted to the drum through the rotation of the eccentric weight shafts.‘ One end of the drum is connected to an outlet con duit l2 opening above a conveying trough [3. ‘The other end is closed. I The drum may be connected with a drive de vice setting the drum in rotation. In other cases washing of liquid suspensions of ?brous material, particularly paper pulp, comprising a stationary container for a liquid suspension, a rotatably mounted screening drum mounted and arranged for having its major portion submergedin the liquid suspension inside said stationary container, two yokes outside the container one at each end of the drum arranged to support said drum, verti-v 50 cally elastic members, each of said yokes being supported adjacent each end exclusively by said elastic members and adapted to be vibrated while is so supported, two rotatable shafts mounted in said‘yokes and carrying eccentric weights for the motion impulses transmitted from the yokes 55 ‘vibrating the yokes, means for rotating said 2,406,618 3 shafts in synchronism, said shafts being located one on each side of said drum, laterally spaced from the central aXis of rotation of the screen ing drum, and'adapted, to transmit by the syn 4 of the drum arranged to support said drum, verti cally elastic helical springs, each of said yokes being supported adjacent each end exclusively upon said springs and’ adapted to be vibrated chronous bodily movement of said shafts and av while so supported, two rotatable shafts mounted yokes vibratory motion to said drum. 2. An apparatus for sorting, dehydrating or Washing of liquid suspensions of ?brous material, particularly paper pulp, comprising a stationary each side of the drum, symmetrically spaced from in said yokes and carrying eccentric weights for vibrating the yokes, means for rotating the shafts in synchronism, said shafts being located one on container for a liquid suspension, a rotatably 10 the central axis oi rotation of said drum, and mounted screening drum mounted and arranged for having its major portion submerged in the liquid suspension inside said stationary container, two yokes outside the container one at each end adapted'to transmit by the synchronous bodily movement oi said shafts and said yokes vibratory motion to said‘ drum. , KARL OLOF LINDGREN.