What are the machines for extraction of starch from sweet potato ？
Sweet potato starch is one of the main products of sweet potato processing. Sweet potato starch can be divided into two kinds: fresh sweet potato and sweet potato dry chips processing. However, the quality of fresh sweet potato starch is better than that of dry sweet potato starch, so the processing of fresh sweet potato starch is more. Because sweet potato cutting is more troublesome, few people now use sweet potato dry to process starch. The starch content of sweet potato generally ranges from 20% to 28%, so the differences of extraction of starch from sweet potato may exist.
Now the next will introduce the machines for extraction of starch from sweet potato. The whole process mainly includes sweet potato washing and cleaning, sweet potato crushing, starch slurry extraction and concentration, starch slurry dehydrating, starch drying, starch sieving and packing.
Machine used for sweet potato starch extraction
And the whole process for extraction starch from sweet potato contains such machines as sweet potato cleaning machine, rotary washing machine, sweet potato rasping machine, centrifuge sieve, fine fiber sieve, disc centrifuge, peeler centrifuge, vacuum filter, flash dryer, starch sieving machine and automatic packing machine.
Procedure 1: sweet potato cleaning and washing
Sweet potato cleaning machine: sweet potato will cleaned by this machine. The machine will rotates its spirals to clean sweet potato and remove some peels of sweet potato.
Rotary washing machine: the machine adopts counter-current washing principle, so sweet potato can flow in opposite direction against water, which can make the washing effectively.
Procedure 2: sweet potato crushing
Sweet potato rasping machine: the machine can crush sweet potato into a kind of mush with high efficiency. Compared with other rasping machine, the rasping machine has high crushing coefficient. The machine plays a key part in the process for extraction of starch from sweet potato.
Rasping machine used for sweet potato crushing
Procedure 3: sweet potato starch extraction
Centrifuge sieve: the machine is one of machines for extraction of starch from sweet potato. The machine has fine screen mesh, which can screen fiber from starch slurry.
Fine fiber sieve: this machine is mainly used for separating small fiber from starch slurry according to its own gravity and centrifugal force. After removing some fiber, there are still fine fiber left.
Disc centrifuge: Disc centrifuge is a kind settling centrifuge, which is usually matched with hydrocyclone unit. The machine can separate some cell liquid and protein. So the machine can be used for enrichment and purification of starch slurry.
Hydrocyclone unit: The separation system of the machine consists of three steps: concentrating, recovering and washing. So the machine is a key part in the extraction of starch from sweet potato.
Complete sweet potato starch extraction machine
Procedure 4: sweet potato starch dehydrating
Starch vacuum filter: The machine is used for starch dehydration. The rotating drum speed can be controlled, and it is equipped with reciprocating paddle stirrer to prevent starch deposition. And the machine dewater starch with high efficiency.
Procedure 5: sweet potato starch drying
Flash dryer: In the process for extraction of starch from sweet potato, flash dryer adopts negative pressure and cooling system, so it can control the loss of starch and guarantee the environment of the workshop.
Procedure 6: sweet potato starch sieving and packing
After drying, the starch which has dried will be fed into starch sieving machine, then the finished starch will be packed by automatic sieving machine, which can save labor and time.
All in all, these are the main machines for extraction of starch from sweet potato.
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