Modular variable-span variable-amplitude large vibrating screen

Abstract

The invention discloses a modular variable-span variable-amplitude large vibrating screen. The vibrating screen comprises a screen box, excitation beams are arranged on the screen box, excitation motors are installed on the excitation beams, and support frames are arranged on the lower portion of the screen box. The screen box comprises two screen box side plates which are oppositely arranged, the lower ends of the box side plates are fixed to a screen face, horizontal clamping grooves are formed in the box side plates, the two excitation beams are arranged between the two screen box side plates, the two ends of each excitation beam are provided with vertical clamping grooves, and adjusting bolts penetrate into the horizontal clamping grooves and the vertical clamping grooves so that the excitation beams can be fixed to the box side plates. At least two support frames are arranged at intervals in the longitudinal direction of the screen box, the support frames are provided with support frame height adjusting structures, and a support frame span adjusting mechanism is disposed between the two adjacent support frames. A modular installation mode is adopted, detachment is convenient, maintenance is convenient, the inclination angle of the screen face, the span of the excitation motors, excitation force and the relative positions of excitation force and the centroid of the screen box can be conveniently adjusted, and screening precision is improved.

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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