Hot pellets coming from Pellet Mill are required to be cooled near ambient temperature to remove  moisture and heat to improve the shelf life. Counter flow Coolers are fast replacing  the old Co-Flow or horizontal Coolers as these are compact, maintenance free & highly efficient.

Principle: - In Counter flow Coolers product continuously moves downward direction in a bed of product in “first in first out manner” while cool air passes through product in upward direction. By the time product and air pass each other, they exchange heat & moisture.

Construction: - It is a rectangular chamber made of SS-304 construction having an Air- Lock on top for entrance of material without air escape and a triple-grid-gate for discharge of material.

A stationary or rotating product distributor is installed to evenly distribute the entering product over product bed. A uniform bed height is maintained inside the chamber which can be increased or decreased to control the  retention time by altering the position of level sensor which also initiates discharging mechanism.

Atmospheric air is sucked through the product layer by I. D. Fan which has butterfly valve to control the optimum volume of air required for cooling. Air can also be controlled by using a variable frequency A.C. Drive by altering the RPM of Blower.

The exhaust air is hot & moist and carries the dust particles with it. Dust is removed from exhaust air by installation of a Cyclone. This has an Air Lock below it. It works on centrifugal forces.

It is very essential to separate dust (fine feed) from exhaust air to avoid shrinkage and air pollution. Properly designed Cyclone with Air Lock at bottom will deliver clean air to atmosphere.  

	Stationary Product distributer Evenly distribution of pellets to maintain even bed height is essential to avoid uneven cooling.
	Butterfly Valve  is provided on I. D. Fan to control the optimum volume of air required for effective  cooling.
	Level Sensor can be adjusted up or down to control the height of bed of pellets inside the cooling chamber to adjust the retention time for moisture removal from the core of pellets and avoid cooling shock.
	Well designed heavy duty I. D. Fan with dynamically balanced Rotor