The Tecroveer range of Grit Classifiers is available in the following sizes:
Equipment can be supplied to suit the client’s requirements.
 
The grit mixture is pumped into a receiving hopper which is provided with an inclined grit washing-dewatering screw.  Grit is conveyed from the bottom of the hopper by a screw, washing the grit below the water level in the hopper and dewatering the grit efficiently along the remainder of the inclined screw.
 
The screw deposits the dewatered grit into a container. The discharge level is at least 2,0 m above the ground level. It is essential that the grit and organic matter be separated effectively to ensure minimal contamination of the classified grit. Elimination of organics results in maximum drainage of water to obtain a dry grit.
 
Construction
The classifier is of robust construction. The screw hopper and trough, the steel pipe and the access chute is constructed of 4,5 mm thick stainless steel grade 304. The screw flight is manufactured from 10 mm thick grade 304 stainless steel plate.
 
The helix of the screw conveyor is welded to the tubular shaft to form a smooth and continuous flight with its outer edges ground to an accurate cylindrical shape. The flights is accurately positioned and is at right angles to the tube axis at all points.
 
The tubular shaft is manufactured of a single piece of tubing having a longitudinal seam. The tube is straight and cylindrical over its entire length and is free of irregularities. End plates is firmly welded to the tube to form a water and airtight container. The end plates is machined to provide a surface perpendicular to the longitudinal axis of the screw. Axis of the stub axles attached to the end plates are  exactly concentric to the axis of the screw. The finished screw shall be tested for shaft alignment and centricity before dispatch to the Site.
 
All pipe work between the vortex degritters and the grit classifier shall be made in Sch10S, 304SS.