Variable-freedom-degree parallel connection vibration sieve

Abstract

The invention discloses a variable-freedom-degree parallel connection vibration sieve, which comprises a support frame, a sieve body, a spring, an inclination angle regulator, a vibration material hopper, a rotating pin shaft assembly, a variable vibration chain and a middle position vibration chain, wherein the sieve body is connected with the support frame through the spring and the inclination angle regulator, the middle position vibration sieve is positioned at the two sides under the sieve body and can provide motive power for two rotations around axial lines respectively parallel to the length and width directions of the sieve body, the variable vibration chain has two arrangement schemes, three basic topology structural forms can be realized, and the sieve body can generate at most five-freedom-degree vibration including two transverse motions and three rotations. The sieve body of the vibration sieve provided by the invention can realize at most five-freedom vibration including two transverse motions in the horizontal plane and three rotations in the space, the decoupling performance of an excitation mechanism is good, the applicability to different sieving materials is high, the sieving efficiency is high, the processing quantity is great, and the vibration sieve can be used for material grading in industries such as petroleum, coal, metallurgy, ceramics, building materials, chemical engineering, agriculture and grain processing.

Description

technical field [0001] The invention relates to the field of vibrating screening equipment, in particular to a parallel vibrating screen with variable degrees of freedom. 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 materia...

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

In addition, none of the existing multi-degree-of-freedom vibrating screens can rotate around an axis parallel to the length of the screen, and this vibration degree of freedom is conducive to the dispersion and stratification of the screen surface materials before passing through the screen; more important Unfortunately, none of the existing multi-degree-of-freedom vibration screen excitation mechanisms can realize the transformation of mechanism topology and vibration degrees of freedom.

[0003] The vibration excitation mechanism of the traditional vibrating screen is based on a fixed number of components and kinematic pairs. The mechanism has a definite topology and a fixed degree of freedom. Only by reducing the vibration power source can the vibration degree of freedom be reduced.

Images