Mechanism natural sand gradation adjustment machine special stepping impact hopper and sand making method

Abstract

The invention relates to a special stepping type counterattack hopper for a machine-manufactured natural sand grading adjustment machine and a sand manufacturing method. The special stepping type counterattack hopper not only can be applicable to manufacture of machine-manufactured sand, but also can not generate the over-grinding phenomenon, and also can be applicable to dry-process sand manufacture. The special stepping type counterattack hopper is a fixed wall type trapezoidal hopper; a counterattack rack is horizontally welded at the upper end wall of the fixed wall; a first counterattack panel is welded on a part of a cavity opening of a lifting hopper cavity of the fixed wall type trapezoidal hopper; the front surface of the fixed wall type trapezoidal hopper is provided with a second counterattach panel, and the back surface of the fixed wall type trapezoidal hopper is provided with an assembling panel. The special stepping type counterattack hopper has the advantages that (1) the self productivity is high, and the applicability to both wet-process sand manufacture and dry-process sand manufacture; (2) the over-grinding phenomenon can be avoided in the sand manufacturing process, the generation of wasted powder in a finished product is avoided, and both environmental pollution and material waste are avoided; (3) the machine-manufactured sand can reach the roundness degree of rivers after being treated by air-separating treatment.

Description

technical field [0001] The invention relates to a step-type counter-attack hopper and a sand-making method for a machine-made natural sand gradation adjustment machine, which can be applied to the manufacture of machine-made natural sand without overgrinding, and can be applied to dry-process sand making. sand manufacturing field. Background technique [0002] Existing sand making machines include impact crushers, impact crushers, double-roll mills, rod mills, hammer mills, ultra-fine crushing cone machines and so on. Except for the rod mill that can produce machine-made natural sand with relatively round and beautiful particle size and relatively small fineness modulus, the above machines can only produce machine-made natural sand with a fineness modulus of about 3.6. The smaller the fineness modulus in the finished product, the higher the needle shape of the machine-made natural sand, which leads to a great decline in the overall product quality of the machine-made natura...

AI Technical Summary

Problems solved by technology

Except for the rod mill that can produce machine-made natural sand with relatively round and beautiful particle size and relatively small fineness modulus, the above machines can only produce machine-made natural sand with a fineness modulus of about 3.6. The smaller the fineness modulus in the finished product, the higher the needle shape of the machine-made natural sand, which leads to a great decline in the overall product quality of the machine-made natural sand; while the rod mill adds wear-resistant rods, which roll in the cylinder. During the process, the rods also roll repeatedly in one direction (the rods can only do synchronous rolling motion in the middle and lower part of the cylinder wall with the rotation of the cylinder wall), and the mechanism natural sand in the cylinder is crushed between the rods, Although the rod mill can produce machine-made natural sand with relatively round and beautiful particle size and relatively small fineness modulus, firstly, its own production capacity is relatively low; secondly, a large amount of overgrinding occurs, resulting in waste powder in the finished product The amount remains high, pollutes the environment, and causes waste of raw materials; the use of three rod mills in dry sand making is relatively immature and the effect is not good

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