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Sarvator
Sand Moulds are placed on the vibrating shakeout area. Shakeout bars, made of abrasion-resistant material, are designed to sort workpiece from sand mold.
The sand clods broken down during the breaking fall onto the first screen below. Here, under vibration, the sand is rubbed together, reducing its size.
The rubbed sand falls onto the second screen, where it is reduced to its normal grain size.
The sand continues its path through the third fine screen, located at the rear nose of the unit. Clumped particles larger than the third screen are discharged through the side channels of the rear nose of the unit.
Hooper
The hopper is placed on top of the pneumatic sand conveyor. Sand coming from the conveyor is dosed into this hopper, and the valve automatically opens and closes depending on the fill level of the pneumatic sand conveyor.
Sand Cooler / Classifer Unit
Sand cooler/classifier unit types vary depending on capacity and sand temperature requirements. The units are manufactured according to a modular design and consist of a combined cooling exchanger located within the main body and located between the inlet and outlet sections.
The sand flows through the cooler as a fluidized bed and, through a series of baffles and barriers, contacts the exchanger's cooling tubes in all directions, ensuring optimal heat transfer from the sand to the water.
The sand temperature leaving the cooler depends on the amount and temperature of the incoming cooling water, along with the ambient temperature. However, under typical conditions, the sand temperature is reduced to 6°C above the inlet temperature of the water passing through the heat exchanger.
Sorting of the sand in the cooler is achieved by removing the fines and dust contained within the sand through the suction hood with airflow. The suction hood is equipped with an inspection door and a pressure gauge. The pressure gauge must maintain the correct negative pressure.
The fines removed from the unit are filtered in a suitably sized filter.
Pneumatic Sand Vator
This unit can be located at the bottom of a sand silo or at the end of the reclamation system. A pneumatic butterfly valve opens to admit sand. This is controlled by a timer located within the control panel. Once full, the unit is pressurized, allowing the sand to be conveyed through the pipe to the appropriate silo.
After the sand has been conveyed from the unit, the butterfly valve reopens, and the cycle repeats until a high-level probe in the relevant silo signals a full silo, or a probe at the top of the unit signals a lack of sand. The cycle restarts when the sand level in the silo drops below full.
The unit has a built-in control panel.