The type and source of heterogeneity fiber in machine-picking cotton
GB 1103.1-2012 "Cotton Part 1: Saw-toothed cotton" cotton standard defined in the cotton refers to the non-cotton fibers and non-natural cotton fibers mixed into the cotton, such as chemical fiber, hair, silk, hemp, plastic Film, plastic rope, dyeing line (rope, cloth) and so on.
The technology of plastic film covering and pipe dropping is widely used in cotton cultivation in Xinjiang. This technique helps increase production and income, but due to the small thickness of the plastic film used for coverage, poor ductility and toughness, and long-term exposure to rain, soil microbes, and light during the growth of cotton. The combined effects lead to serious damage after maturation of the cotton. In the mechanized harvesting process, due to the lack of mechanical harvesting selectivity for the harvested objects, the picking spindle with high speed rotation of the cotton picker and the tangible film residual fiber together Winding collection.
At present, cotton-growing planting varieties have low start-to-knot heights. When the picker picks, the pickings are too small from the ground, and the picking machine can easily pick the ground plastic film and the dropper and the plastic bags scattered in the ground when the picker is picking. (Including food bags, pesticide bags) together with seed cotton storage.
In the process of shipment, storage and processing of machine-made cottonseed cotton, mechanization has not been fully realized. Some parts of the seed cotton still need to be manually pressed and loaded in the process of loading and unloading. During the process of shipment, storage and processing of seed cotton, the hair and the fallen Masks, gloves, and cover the seed cotton tarpaulin pieces and easily mixed into the seed cotton to produce the opposite fiber.
In winter, some growers sold the cotton land to farmers for grazing. Due to hooking of cotton stalks, some livestock hairs were left on the cotton stalks, and the second year of seed cotton harvesting brought heterosexual fibers to the surrounding areas. Unpicked cotton fields cause heterosexual fiber pollution.
The development of foreign fiber cleaning machinery
At present, the cleanup technology of lint fibers is relatively mature. The main use of photoelectric detection method to identify the opposite fiber, the use of high-pressure air flow to remove the opposite fiber, suitable for processing and production in the cotton mill, compared with the lint cotton heterosexual fiber cleaning machinery, seed cotton cross-fiber cleaning machinery to There are many differences in the heterosexual fiber properties in seed cotton, the processing volume of seed cotton per unit time, and the dust flocculation in the seed cotton processing workshop. Currently, the seed cotton cross-over fiber cleaning technology is in the research and development and trial production stage. There is an opposite fiber cleaning machining efficiency and seed cotton production. Problems such as mismatched processing and inability to implement online cleanup.
Control machine picking cotton heterosexual fiber effective measures
Accelerate the cultivation of excellent machine-cultivated cotton varieties, and adapt to machine-picked cotton. The key varieties used are early maturation, disease resistance, concentrated boll opening, long fibers, and no less than 15 cm from the beginning of the fruit branch. Fruit branches are shorter and the plant shape is compact.
In the source, the quality of the opposite fiber is good, and the thick film is used in the planting to increase the toughness and strength of the film. Before picking cotton, do a good job of clean-up of residual film in the field, plastic bags (including food bags, pesticide bags), drip tubes with pieces, and weeds. Grazing in cotton fields is strictly prohibited.
Accelerate the design and manufacture of seed cotton cross-over fiber cleaning machinery
Accelerate the mechanized equipment manufacturing of machine-made cottonseeds, cotton, cotton, shipping, storage and processing.
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