STUDY OF THE INFLUENCE OF GRATES ON FIBER FLOW IN THE CLEANING ZONE
Keywords:
Saw gin, grate system, saw cylinder, centrifugal force, resistance force, density, pressure, velocity, fiber, cleaning efficiency.Abstract
During the initial processing of cotton, the cleaning efficiency of the unit of the cotton cleaning chamber — which removes fine and coarse impurities — is relatively low, and due to insufficient removal of foreign mixtures from cotton, it is necessary to clean the fiber more effectively in the saw gin to improve fiber quality. To accelerate the removal of coarse and fine impurities from the fiber in the gin, theoretical studies were conducted on an improved grate with grating bars, and the optimal parameters of the grates were determined. The impurity separation process from the fiber was studied at inter-grate distances of l₁ = 44 mm, l₂ = 46 mm, and l₃ = 48 mm, and at different fiber flow coverage angles. The research found that when the coverage angle of the grates is φ = 60°, the interaction between the fiber and the grate bars under the action of the rotating saw teeth intensifies the separation of coarse and fine impurities from the fiber. The most effective interaction between the fiber and the grate bars was observed when the inter-grate distance was l₂ = 46 mm and the angle at the ends of the grate bars had an optimal value, leading to high cleaning efficiency of the improved grate system.
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