DEVICE FOR CONTINUOUS BLEACHING CELLULOSE CONTAINING SEMI-FINISHED PRODUCTS AND ITS OPERATIONAL PROCEDURE Russian patent published in 2011 - IPC D21C3/26 

FIELD: machine building.

SUBSTANCE: device for continuous bleaching cellulose containing semi-finished products consists of vertical hollow container of "pipe-in-pipe" type, of receiving unit, of bleaching unit, of flush unit and of unloading unit. The receiving unit is made in form of a loading element, a cutting-off or rotary gate and a pneumatic chamber with a branch connected with a pulsator. The pneumatic chamber is connected with the bleaching unit. The bleaching unit is made in form of a rotating internal pipe with orifices in its lower part. Also, a mixing device is secured along whole length of external surface of the internal pipe. The mixing device corresponds to a screw-type of a spiral-type band, or a rod, or blades. The flush unit is made as an external pipe with a bottom. The pipe is stationary fixed on a foundation. In the middle part of the pipe there is made a branch, while in a lower part there are made a process hatch and a branch. The unloading unit corresponds to a coaxial hollow cylinder attached to the external pipe; the cylinder has two bottoms. An internal bottom has orifices and is connected with an off-take chute. A branch withdrawing spent fluid is attached to an external bottom. Inside the coaxial hollow cylinder there is installed a device for target product wringing and unloading. This device is equipped with at least one scraper (s) in form of a rod(s) rigidly attached with its one end to the internal pipe. On another end the rod has a blade(s) with controlled angle of incline.

EFFECT: increased operational reliability of device.

4 cl, 2 dwg