The drum is made out of SS 304 perforated plate with SS spider rings at both ends. The spider rings are centrally mounted on a shaft which is supported on 2 nos. Bearings with plumber blocks at both ends. One end of the shaft is provided with spur gear for giving of the drum. Both end of the shaft is provided with gland arrangement for sealing. The drum is driven by a pinion mounted on output shaft of worm reduction gear box.

The drum is fitted inside a SS fabricated VAT. The centre portion of the Vat is a semi circular section which is little bigger than diameter of the drum. Two box type section having a tapered tail end is welded to the sides of the semi circular. Section tapered end at one side is provided with a pump inlet nozzle and at the other side is provided with a pulp outlet nozzle. Both ends of the vat is provided with a ring which is having the same diameter of the end rings of the drum for fitting of canvas belt for proper sealing of pulp. The both end plates of the vat is provided with a nozzle for removal of back water. At the bottom of the vat a drain nozzle is provided for cleaning of the vat. The two ends plates of the Vat has provision for fixing of the total assembly. A SS shower is mounted on the thickener vat for cleaning the thickener drum mess continuously. One Wooden baffle / SS Angle is fixed on the drum to remove thickened pulp from the Vat.

During Pulping operation consistency of various pulps could be raised from 0.5% to 3.0% using conventional thickeners. Arrangement can also be provided to increase the outlet consistency up to 10-12%.