A modular variable-span variable-amplitude large-scale vibrating screen

Abstract

The invention discloses a modular large vibrating screen with variable span and variable amplitude, which comprises a screen box, the screen box is provided with an exciting beam, an exciting motor is installed on the exciting beam, and a bracket is arranged at the lower part of the screen box, and the screen box includes The two side plates of the screen box are set opposite to each other. The screen surface is fixed at the lower end of the side plate of the box. There are horizontal slots on the side plate of the box. Two excitation beams are arranged between the two side plates of the screen box. There is a vertical slot, and the adjusting bolt is inserted into the horizontal slot and the vertical slot to fix the excitation beam and the side plate of the box. The brackets are arranged at least two groups at intervals along the longitudinal direction of the screen box, and the brackets have bracket heights. The adjustment structure is provided with a support span adjustment mechanism between two adjacent sets of supports. The invention adopts a modular installation method, which is convenient for disassembly and maintenance, and can conveniently adjust the inclination angle of the screen surface, the span of the excitation motor, the magnitude of the excitation force and the relative position between the excitation force and the centroid of the screen box, and improve the screening accuracy.

Description

technical field [0001] The invention relates to a screening machine, in particular to a large modular vibrating screen with variable span and variable amplitude. Background technique [0002] Material grading equipment is often used in the engineering field. The common material grading equipment mainly includes: equipment that uses gravity as the power of grading, and its representative equipment is a spiral classifier, a mechanical stirring hydraulic classifier, and a Yunnan tin hydraulic grading box. Although these devices are simple in structure, they occupy a large area and are not easy to disassemble and maintain; the representative equipment that uses centrifugal force as the classification power is hydrocyclone, which is characterized by large processing capacity, but requires high particle size and is easy to use. Abrasion and easy blockage; Vibrating screens that use the vibration of the screen to drive the material to jump and then realize the layered classificatio...

AI Technical Summary

Problems solved by technology

[0002] Material grading equipment is often used in the engineering field. The common material grading equipment mainly includes: equipment that uses gravity as the power of grading, and its representative equipment is a spiral classifier, a mechanical stirring hydraulic classifier, and a Yunnan tin hydraulic grading box. Although these devices are simple in structure, they occupy a large area and are not easy to disassemble and maintain; the representative equipment that uses centrifugal force as the classification power is hydrocyclone, which is characterized by large processing capacity, but requires high particle size and is easy to use. Abrasion and easy blockage; Vibrating screens that use the vibration of the screen to drive the material to jump and then realize the layering and grading of the material drilling gap are widely used in the material classification operations of various coal preparation plants. The representative equipment is the linear vibrating screen.

[0003] In actual production, under different application conditions, the linear vibrating screen machine has some shortcomings, and some problems will occur, which will affect the normal production in severe cases

The structure of the existing vibrating screen is strong, it is not easy to disassemble and replace parts, and it is not easy to maintain; when the actual production needs unbalanced excitation force or needs different amplitudes at different positions on the screen surface, the existing vibrating screen excitation The motor is fixed on the side plate of the screen box through the excitation beam, and the span or the relative position to the center of mass of the screen box cannot be adjusted, so it cannot meet the requirements of unbalanced excitation force; the existing vibrating screen is fixed in structure, and the vibration damping parts are welded The method is fixed, it is not convenient to adjust the inclination angle of the screen surface

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