Speaking of where the grapes are best, you will think of Xinjiang, especially the Turpan grapes.Xinjiang is rich in grapes and raisins, where the sunshine is long and the grapes are very sweet.

Picking fresh grapes, some are distributed as fresh fruits to the market, and some are air-dried into raisins.
We know that raisins are made from grapes and the quality of the grapes directly affects the quality of the raisins. Some raisins are black with or with impurities, which affect the taste and are not high in nutrition. You need to screen them out. The raisin color sorting machine can effectively remove the impurities in the raisins. After the color selection, the raisins are large in size, uniform in color, and colorless.
 

raisin sorting machines by Zhongke

Zhongke Sorting has a solution for optical color sorting raisins. Zhongke’s sorters detect cap stems, stems, stalks, stones, mold, discolorations and all types of foreign material such as plastic, glass etc.

SAFE FOOD, CONSISTENT QUALITY

In order to meet the contemporary food quality standards it has become crucial to invest in reliable food sorting solutions. Zhongke Sorting offers sorters for a multitude of applications, removing defects such as discolorations, (loose) pits and pit fragments, stems, foreign material, blemishes and aflatoxin.

Optical sorting technology

CAMERA

Recognition of materials based on colour, biological characteristics and shape is guaranteed thanks to the use of cameras. Their capabilities go beyond the visible spectrum and include infrared, ultraviolet and other spectra. Zhongke has developed exclusive high resolution cameras with an adapted spectrum, ideal for optical food sorting.

BSI

Allows the examination of food products using light beyond the visible spectrum, into the near-infrared region. Zhongke’s BSI technology inspects the characteristics of the product and can identify certain chemical and molecular differences and changes on the surface and within the objects being inspected.

X-RAY

Detects on density, irrespective of size, moisture or pollution level.The new X-ray foreign object detector can accurately remove malignant impurities such as glass, metal, stone and clods mixed in the product.

Optical sorter Specification