The 1990s is the rapid development of China's grain industry in the decade, led to the rapid rise of the grain machine industry. In addition, foreign grain machine manufacturers have entered China, or invested in factories, or opened offices. This also provides a good opportunity for domestic grain machine manufacturers to learn and develop, especially the color sorter, is to become the focus, the focus of the late 1990s, in the foreign several well-known color sorter manufacturers of the formal institutions stationed in China, a comprehensive and clear guide to the publicity coupled with the change in the concept of rice consumption, so that the rice color sorter in the process of design and practical applications have gradually become an important part of the processing of rice in China. Process.
In this period, the main color sorter manufacturing suppliers or foreign manufacturers, plus a small number of domestic manufacturing enterprises, and in the quality of the product on the domestic and foreign equipment but there is a big gap, the main reason is that the foreign products at that time in the Chinese market and the foreign market for the synchronization of the product, and are the most advanced technology, such as the setting of the second re-selection greatly reduces the proportion of carry out, the use of double-sided Lens plus special wavelength light source to improve the recognition accuracy, additional black playing, white playing procedures to enrich the color selection function. Domestic products are mainly semi-autonomous development plus half learning to imitate, the understanding of the color selection technology stays on the surface, only the use of ordinary light source, single-sided recognition, and no re-selection, simple functions, so not only the quality of the product is not high, and the performance is not stable.
Starting from 2000. China's color sorter industry in rice processing officially entered a period of rapid growth, the domestic manufacturers are also more and more, the variety of specifications are also more and more rich, the share of domestic equipment gradually increased. So far, there are more than 20 brands or manufacturers appearing in China's color sorter market, mostly concentrated in Hefei City, Anhui Province. With the increase in the number of manufacturers, the specifications of the color sorter is also more and more rich, more and more functions, from the earliest small channel models developed into a large channel models, from the original single-selective function into the development of simultaneous selection. By the visible light recognition development into infrared, ultraviolet light recognition and so on.
In recent years, China's color sorter development is more rapid, has been widely used in the need for solid particles of material for color selection of other processing industries, such as food, agricultural products, chemicals and product processing industry. In the unqualified products and qualified products due to the particle size is very close and can not be separated by screening equipment, or density is basically the same and can not be separated by specific gravity sorting equipment occasions, the color sorter can be effective separation, its unique role is very obvious.