Series-parallel vibrating screen with five degrees of freedom

Abstract

The invention discloses a series-parallel vibrating screen with five degrees of freedom. The vibrating screen comprises a support frame, a parallel excitation device, a screen frame, springs, a tilt angle adjusters, middle vibration exciters, screen-tail vibration exciters and a tail balance chain, wherein the parallel excitation device is located at the head part of the support frame, and is used for enabling the screen frame to vibrate with three degrees of freedom, namely rotating around a vertical axis and moving in two directions in the horizontal plane; the middle vibration exciters are used for enabling the screen frame to vibrate in the vertical direction; the screen-tail vibration exciters are used for enabling the screen frame to rotate around a horizontal axis parallel to the width direction of the screen frame; the tail balance chain can play a role in balancing the stress on the screen frame or adjusting the degree of freedom of vibration of the screen frame. The screen frame of the vibrating screen can vibrate with five degrees of freedom at most, the screening efficiency is high, the treatment capacity is large, vibration parameters of all directions of vibration can be adjusted, the suitability for screening different materials is high, and the vibrating screen can be used for material classification in industries such as petroleum, coal, metallurgy, ceramics, building material, chemical engineering, agriculture, grain processing and the like.

Description

technical field [0001] The invention relates to the field of vibrating screening equipment, in particular to a five-degree-of-freedom hybrid vibrating screen. Background technique [0002] At present, vibrating screens are widely used in energy, metallurgy, ceramics, building materials, chemical industry, agriculture, food processing and other industries, mainly for the classification of granular materials. The actual screening efficiency per unit time of the existing vibrating screen is low, the material dispersion on the screen surface is not high, the material distribution on the screen surface is uneven, and the screen penetration effect is poor; The screening effect of screening materials has been unsatisfactory, and the screen holes are easily blocked. The treatment method of increasing the vibration intensity of the vibrating screen is often limited by the rigidity of the screen box, and the dispersion, stratification and interlayer movement of the material on the scr...

AI Technical Summary

Problems solved by technology

The actual screening efficiency per unit time of the existing vibrating screen is low, the material dispersion on the screen surface is not high, the material distribution on the screen surface is uneven, and the screen penetration effect is poor; The screening effect of screening materials has been unsatisfactory, and the screen holes are easily blocked. The treatment method of increasing the vibration intensity of the vibrating screen is often limited by the rigidity of the screen box, and the dispersion, stratification and interlayer movement of the material on the screen surface are lacking. enough motivation

In addition, the vibration degrees of freedom of the existing vibrating screen are less, most of which are 1-2 degrees of freedom and the degrees of freedom are fixed, and the adaptability to the screening object is poor

The Chinese patent with application number 201110295715.0 designed by the first inventor of the present invention discloses a four-degree-of-freedom hybrid vibrating screen. Because the vertically arranged moving pair is used as the driving pair, the high-frequency vibration of the vibrating screen cannot be realized.

The Chinese patent No. 201110100682.X designed by the first inventor of the present invention discloses a three-degree-of-freedom hybrid vibrating screen. The vibrating motor provides power, and the inertial vibration of the vibrating motor will interfere with the vibration in the two horizontal directions, and the degree of freedom of the vibration of this technical solution lacks the degree of freedom of rotation, and the screening effect is limited.

The patent number designed by the first inventor of the present invention is 200920143613.5. The Chinese patent discloses a four-degree-of-freedom hybrid vibrating screen, which can realize three-dimensional movement in space and one rotation. In terms of rotation degrees of freedom, the technical solution can only produce vibrations around the vertical axis. The rotation in the vertical direction in the technical solution described in this patent is driven by a linear motor, and the linear motor needs to overcome the load generated by its own gravity when moving, and it is difficult to achieve high-frequency vibration; the structural layout of the vibrating screen described in this patent is unreasonable , cannot be used for the screening of a large number of granular materials in industrial production

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