The belt scraper is a thin metal or rubber plate, measuring the width of the conveyor belt, that is used to remove material that has attached to the belt. Belt scrapers are used on top and/or bottom of a belt depending on the type of material being screened.
A secondary conveyor belt that pivots from horizontal to vertical allowing stones to roll backwards while processed stock is transferred forward via conveyor belt. This feature may be added to any screening/separating machine.
There are multiple discharge belts on Terra Select Screens. Typically there are three different belts moving different sized material away from the machine into a stockpile. The discharge belt length and height determines the stockpile size before needing to remove the machine or reposition the screen.
There are primarily two methods used to change a trommel drum. The first requires you to connect chains to both ends of the drum and lift it out of the trommel machine using an excavator. The second method requires the drum be lifted out of the cradle using a forklift or a loader.
Hardox is a type of wear-resistant sheet steel. It is manufactured and exported worldwide by the Swedish company SSAB, which developed the first modern wear-resistant sheet in 1974. This steel is used in Terra Select Screens because it wears very slowly, even when under large mechanical load.
The Infeed Hopper includes the hopper, the hopper feed belt and in star screens, a dosing roller. It is the first thing to greet the feedstock as the feed rollers pull the feedstock into the machine for screening.
Lifting bars are used in trommel drums to lift material while the drum turns to help in the material separation process. The lifting bars in a wire mesh drum are part of the drum frame and cannot be removed. Lifting bars in a punch plate drum are not part of the drum frame and can be removed. Removing lifting bars for certain material screening applications, such as aggregate, helps eliminate drum damage.
The optional Magnetic Head Pulley is positioned at the top of the discharge belt and is designed to pull ferrous materials (such as nails) from the ground material. The ferrous metal then travels around the head pulley, is separated, and falls down the metal collection chute into a container below, or onto the ground.
Polyurethane wear plates are used in areas of a machine, such as the inside of the hopper and conveyor side walls, where material passes and creates abrasion. These wear plates vary in thickness and slow the rate at which the machine parts wear.
Sometimes referred to as a cogged belt, the positive fitting drive belt is a belt that has notches on the bottom. This allows for positive traction with the conveyor belt pulley, eliminating belt slipping.
A side skirt helps prevent spillage of the product and reduce contamination under the conveyor belt. It consists of an aluminium enclosure with a strip of Polyurethane wear plates to reduce the damage done to the machine.
A star screen attachment is an additional piece of equipment that can be added to a screen for additional separation, such as vacuum system to aide in removing light fraction material (plastic), destoner conveyor to aide in the removal of stones, or a magnetic pulley (roller) to aide in the removal of metal.
Tier II (Tier 2), is an engine emissions standard. There are several tiers of emissions standards that large diesel engines must adhere to by certain dates.
Tier II engines have more advanced technology than Tier I which reduces the amount of nitrogenous emissions from the engine. Tier II was implemented from 2001-2003 and was the current standard until 2005.
Tier III (Tier 3), is an engine emissions standard. There are several tiers of emissions standards that large diesel engines must adhere to by certain dates.
Tier III engines have more advanced technology than Tier II which reduces the amount of nitrogenous emissions from the engine. Tier III was implemented from 2005-2006 and was the standard until the interim Tier IV was implemented in 2011 and the final Tier IV requirement was implemented in 2014.
Tier IV (Tier 4), is an engine emissions standard. There are several tiers of emissions standards that large diesel engines must adhere to by certain dates.
Tier IV engines have exhaust after treatment systems to reduce emissions of particulate matter (soot) and nitrogenous compounds. This EPA mandate significantly reduces smog and other pollutants from diesel machinery.
The Yard Drive is a wheel drive system that aides in the movement of a wheeled machine in an operation yard. The system consists of a steel wheel that applies pressure to a machines wheel and turns it for machine mobility.