Cassava starch machinery

1. Raw material receiving unit Material receiving unit is the first link of cassava starch processing. The primary purpose of this unit is the cassava preliminary removing impurity and the smooth storing in inside of raw material storage tank.

Cassava is conveyed to the cassava yard after weighing by wagon balance, and then is conveyed into the cassava storage hopper by forklift.

The key of this unit is to remove sand and other impurities of cassava during the harvest, the sand stick to the cassava can drop through the vibrating screen. Preliminary de-sanding and removing impurity can relieve machine burden of de-stoning and cleaning unit.

Attention must be taken that cassava should not be damaged in cassava purchase.Damaged cassava is easily decayed, and decayed cassava is vulnerable to infect around cassava. Bad cassava material has a big influence to starch quality.

2. Raw material conveying unit

Cassava stored in the cassava hopper is conveyed to the large inclination-angle belt conveyor through conveying belt at the bottom of the hopper, and further is conveyed into cleaner to remove impurities by the large inclination-angle belt conveyor, removing sand and other impurities mixed in the materials at harvest time.

3. De-stoning, cleaning and crushing unit

Clean raw materials for cassava processing play an important role, so de-stoning and cleaning unit of pretreatment stage is the most important. The purpose of this unit is to get rid of sandstone, clay of cassava, and to deposit cleaned cassava in the cassava temporary hopper.

Cassava is conveyed into the blades washer, blades washer adopts counter-current cleaning principle. Water flow (used for washing) and the materials movement direction is opposite. Certain level of cleaning water is poured into the cleaning trough, cassava raw materials almost float on the surface of water and move forward along rolling blades through internal trough. The cassava rotates and clashes each other in the water, getting rid of the soil and impurities on the surface of them in the greatest degree. Heavier sand and other heavy impurities sink to the bottom of the trough. Meanwhile, waste water outflows through the overflow outlet below the first trough, discharged soil and impurities sink to the drain outlet, and finally are discharged from there. In the end, the root pieces (materials) are conveyed to the next production link, through maximum cleaning of unloading fence.

Finally the cassava cleaned by the three-grade blades washer, fall into the crusher through the big inclination-angle belt conveyor to carry on the preliminary slicing of cassava tuber. Cassava is cut into small piece to ensure rasping efficiency of rasper. Cubage of raw material temporary storage bin generally is designed to store washing quantity for one to two hours.