High intensity pelleting machine
High intensity pelleting machine
A pelleting mill for pelleting feed product, has a pelleting machine with a plurality of extrusion holes for extruding the feed product; rollers, rotatable relative to the pelletinging die, for forcing feed product through the extrusion holes.
The standard pelletinging process in animal feed pelleting production and other similar applications achieves a combination of heating and moisturizing the steel belt.It is generally accomplished by injecting steam into the feed product within a conditioning chamber and holding the mixture until the heat and moisture from the condensing steam is absorbed into the feed product. The feed product is usually ground before it is exposed to the heat and moisture in the conditioning chamber.
In a pelleting mill of standard configuration, mechanical work is performed on the feed product by the pinching action of a roller passing over a die face. Some shear of the compactor manufacturer also results from the rolling action; but, because of the fluid characteristic of the feed product and frictional drag in the die holes, even more shear occurs in the die holes between the centers and the outer surfaces of the pelletings.
Densification occurs as a result of the pressure required to force the feed product through the die holes.If the force required to push the feed product through the die holes exceeds the pressure that can be generated in the feed product by the pinching action, flow through the die holes halts and the pelleters operation ceases. This force limitation imposes upper limits on moisture content and fat content of the formulation of the feed product.
In some applications, the process is improved if higher temperatures together with greater levels of mechanical shear and pressure are applied to the feed product. Several non-standard pelletinging concepts have been developed to attain these higher levels of temperature, mechanical shear, and pressure. These include Thick Pad Pelletinging, Double Pelletinging, Pre-Treatment of Feed Product in an Expander before pelletinging.
The foregoing illustrates limitations known to exist in present high shear pelleting machine. It would be advantageous to provide an alternative directed to overcoming one or more of those limitations. Accordingly, a suitable alternative is provided including features more fully disclosed hereinafter.
A pelleting mill for pelleting feed product, has a pelleting machine with a plurality of extrusion holes for extruding the feed product; rollers, rotatable relative to the pelletinging die, for forcing feed product through the extrusion holes.
The standard pelletinging process in animal feed pelleting production and other similar applications achieves a combination of heating and moisturizing the steel belt.It is generally accomplished by injecting steam into the feed product within a conditioning chamber and holding the mixture until the heat and moisture from the condensing steam is absorbed into the feed product. The feed product is usually ground before it is exposed to the heat and moisture in the conditioning chamber.
In a pelleting mill of standard configuration, mechanical work is performed on the feed product by the pinching action of a roller passing over a die face. Some shear of the compactor manufacturer also results from the rolling action; but, because of the fluid characteristic of the feed product and frictional drag in the die holes, even more shear occurs in the die holes between the centers and the outer surfaces of the pelletings.
Densification occurs as a result of the pressure required to force the feed product through the die holes.If the force required to push the feed product through the die holes exceeds the pressure that can be generated in the feed product by the pinching action, flow through the die holes halts and the pelleters operation ceases. This force limitation imposes upper limits on moisture content and fat content of the formulation of the feed product.
In some applications, the process is improved if higher temperatures together with greater levels of mechanical shear and pressure are applied to the feed product. Several non-standard pelletinging concepts have been developed to attain these higher levels of temperature, mechanical shear, and pressure. These include Thick Pad Pelletinging, Double Pelletinging, Pre-Treatment of Feed Product in an Expander before pelletinging.
The foregoing illustrates limitations known to exist in present high shear pelleting machine. It would be advantageous to provide an alternative directed to overcoming one or more of those limitations. Accordingly, a suitable alternative is provided including features more fully disclosed hereinafter.