CDS – GRIT CLASSIFIER

Our CDS – GRIT CLASSIFIER is a machine with the task of separating from the water the sandy materials.
It consists in a suitably shaped decantation hopper, with a screw for the sedimented materials extraction.
The spiral is normally of the type without central shaft (shaftless), but is also provided for the version with central shaft (shafted).
The spiral auger is normally connected directly to the motor via flanged shaft.
The operation of the machine is simple but extremely effective: the water to be treated entering into the hopper and the sands during the water remains inside the tank, because of their weight, they go to the bottom.
Meanwhile, the extraction screw proceeds with the removal of the sand from the bottom of the machine
which, by rotating at low speed, avoids the turbulence and increases the efficiency of the process.
The trough of the extraction auger is protected by a wear-resistant coating HDPE or in stainless steel bars.

GRIT SEPARATION AND WASHING

VXGR – VORTEX GRIT SEPARATOR

Our VXGR – VORTEX GRIT SEPARATOR essentially consists in a system of mixing shovels inserted into a
concrete tank of generally realized before the installation in the plant.
The machine can also be provided with a stainless steel tank; This version is called VXGR-T – VORTEX GRIT SEPARATOR WITH TANK.
Once the gear motor is activated, the shovels create a vortex inside the tank full of effluent.
This vortex facilitates the sedimentation on the bottom of the tank of the sands, also of particle extremely small (up to 100 microns).
These sands are then sucked out of the tank by a pneumatic said "air-lift" system, or by a pump sands; the machine can also be provided with devices for the separation and for the suction of oil and grease.

 

CDL – GRIT WASHER

Our CDL – GRIT WASHER is used for the separation of sandy materials contained in waste water, and for the simultaneous washing of the organic substances.
It is constituted by a conical hopper decantation equipped with a stirring system, connected to a spiral for extracting solid with central shaft.
The spiral auger is normally connected directly to the motor via flanged shaft. In the bottom of the hopper is a clean water inlet system in countercurrent which has the purpose of removing the organic substances present in the sands.
The water entering into the hopper, through the inlet spiral, is kept in motion by the agitator central that a
rotational movement. This has the purpose to facilitate the sedimentation of the sand and at the same time to maintain suspension of the organic material.
The sand, in its journey toward the bottom is further from the clean water wash fed in countercurrent, to
then be extracted from the cochlea.
The counter flow water also has the task of facilitating the ascent of the organic substances, which are then evacuated at regular intervals by dedicate exhaust duct.
The clarified water is instead evacuated by a second duct placed in the upper part of the conical hopper. The continuous rotational motion of the water mass allows the sand to pass from the hopper to the discharge auger, which conveys the output.

 

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