Screening distributor based on trapezoidal screen bar screen shaft

Abstract

The invention discloses a screening distributor based on a trapezoidal screen bar screen shaft. The trapezoidal screen bar screen shaft (8) comprises positioning flanges and a plurality of trapezoidal movable screen bars (10), wherein the trapezoidal movable screen bars (10) are arranged between the positioning flanges in a penetrating mode, trapezoidal ends (11) are arranged at the two ends of the trapezoidal movable screen bars (10), and the trapezoidal ends (11) are opposite to the upper bottoms and the lower bottoms of the trapezoidal movable screen bars (10); a plurality of trapezoidal movable holes (12) matched with the trapezoidal ends (11) are formed in the positioning flanges, the section size of the trapezoidal ends (11) is smaller than that of the trapezoidal movable holes (12), and the upper bottoms and the lower bottoms of the trapezoidal movable screen bars (10) are consistent in direction; and in the overall rolling process of the trapezoidal screen bar screen shaft (8), the trapezoidal ends (11) swing up and down and left and right in the trapezoidal movable holes (12), so that movable screen seams (16) are formed. According to the screening distributor, fine-grained materials can be efficiently screened without blocking the screen seams.

Description

technical field [0001] The invention relates to a screening device for coarse and fine materials. It is suitable for coarse and fine separation industries such as coal, coke, coal slime, ore, chemical raw materials, grain, urban sludge, etc. It is especially suitable for grading and screening in coking plants and screening equipment in the field of coal transportation in thermal power plants. Background technique [0002] As we all know, there are many types of screening machines at present, especially when screening fine particles with a particle size of 1-10mm, the most common problems are that the finer the screen, the more difficult it is to screen, and the lower the screening efficiency, the easier it is to block materials, resulting in insufficient output and short wear cycles. and other complications. [0003] There are several specifications for screening coke, diced coke, and coke powder in coking plants. Usually, the particle size of coke is 20-200mm; diced coke i...

AI Technical Summary

Problems solved by technology

The trapezoidal sieve bar screen shaft adopts the fully movable trapezoidal sieve bar sieve shaft (the sieve gap is fully movable) and the staggered arrangement of the fixed trapezoidal sieve bar and the movable trapezoidal sieve bar (the sieve slot is semi-active), forming a movable sieve slot to solve this blockage Seam problem, using trapezoidal sieve bars with positive and negative spirals to solve the problem of material blocking in the sieve shaft, realizing the self-cleaning function in the sieve shaft, and solving the problem of material blocking on the sieve surface through forced transportation through the screen surface, and using wear-resistant and impact-resistant materials It solves the problem of large material impact and short wear-resistant period, and solves the problem of excessive motor power through the hollow cylinder of the screen shaft

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