sweet potato starch line

yam starch production line
sweet potato starch line
potato making equipment.
10mt/day, 20mt 50mt 100mt/day

1. Raw material receiving unitMaterial 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.  2. Raw material conveying unitCassava 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 unitClean 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.4. Rasping and pumping unitRasping unit is the most important link to influence cassava starch extraction rate. Efficient rasper can release cassava starch particles from cassava cells thoroughly, guaranteeing the combination starch content of cassava residue to the minimum.5. hydro-cyclone and de-sanding unitCassava slurry got from rasping is pumped into the de-sand cyclone through a fiber pump. Materials with certain pressure enter into the de-sand cyclone along the tangent, cassava slurry in the hydro-cyclone is rotating with high speed, light starch and cassava residue etc. overflow from the top of the hydro-cyclone, while heavy sand is discharged from the bottom of the hydro-cyclone. At the bottom of the ceramic vortex tube has  a sand catch pot which connects pressure recoil water to guarantee starch not being discharged from underflow outlet, and the sand in the sand catch pot is discharged regularly through two air valve.6. Centrifugal extraction unitCentrifugal extraction unit is another key units of the whole production line to influence cassava starch extraction rate, good centrifugal screen and process technology can help extract out all the free starch from broken cassava cells. 7. Cassava residue de-watering unitCassava residue pumped from the extraction unit proceeds with de-watering by a centrifugal sieve, the working principle is the same as an extraction sieve. Cassava residue finally is delivered out of the workshop through a screw conveyor, and the water of cassava residue still returns to process water system of extraction unit.8. Concentrating and refining unitConcentrating and refining unit is the most important one of the whole production line, starch quality can be guaranteed fully in hydro-cyclone refining unit. Impurities of starch slurry will be eliminated thoroughly through physical method, without influencing the quality of starch product.9. Fine fiber separation unitFine fiber separation unit is assorted unit to concentration and refining unit; its main purpose is to reduce working pressure of hydro-cyclone. When fiber and impurities in the starch slurry are too much, fine fiber sieve can be opened to discharge part of the fine fiber of hydro-cyclone out of cyclone system to ensure overmuch fine fiber can be discharged from hydro-cyclone.  Fine fiber separation unit plays a good auxiliary function in the working of hydro-cyclone; it can discharge large amount of fine fiber of hydro-cyclone out of cyclone system in time, at the same time it can discharge cell sap on the poor raw material situation.10. Starch de-watering unitStarch milk with too big moisture content came from hydro-cyclone can’t directly dry, so first starch milk needs de-water to make starch moisture content be about 40%. 11. Flash drying unitFlash dryer will further dry the de-watered starch to commodities starch required moisture content. Air passes through the filter and is heated to the required temperature by the heat exchanger, and then hot air is sucked into the flash dryer by draught fan. De-watered starch is conveyed to the feeding spiral with hopper, and then conveyed to the feeding inlet of flash dryer through spiral conveyer; starch enters into the cyclone separator through air pipe along with hot air of flash dryer; dried starch separates with air in cyclone separator; wet air leaves cyclone separator and discharged through draught fan. Starch enters into finished product spiral through air locker below the cyclone separator. The big bend pipe flash dryer by special design practically proves that the energy consumption reduces 30-40% than average.12. Screening and storage unitStarch is conveyed to the starch well-distribution bunker by finished product spiral, and then the starch is conveyed to the bucket elevator through the leveraged feeder starch below the starch well-distribution bunker, finally the starch is conveyed into the two-way conveying spiral. Starch returns to the starch well-distribution bunker through two-way conveying spiral, if the moisture content of starch can’t reach standard; starch enters into the double storehouse vibrating sieve through two-way conveying spiral, if the moisture content of starch can reach standard. The vibrating screen sifts and clarifies dried starch, removes gelatinous and thick grain of the fine starch, makes the fineness of the finished product starch meet the standard. The starch screened enters directly into the stainless steel starch bunker for temporary storage. The sieve mesh number of the selected double storehouse vibrating sieve its sieve mesh is increasing from top to bottom gradually, and guarantees no blockage of the starch screening and the fineness of starch. 13. Weighting and packing unitThe starch of storehouse will be packed into 25 kg per bag by automatic packer.