CN109647597B - Multi-machine driven circular motion vibration crusher - Google Patents

Abstract

The invention belongs to the field of self-synchronizing vibrating machinery, and discloses a multi-machine driven circular motion vibrating crusher which comprises an inner mass, an outer mass, a damping spring and two vibration exciters. By utilizing the self-synchronizing principle, the two vibration exciters are symmetrically arranged on the inner mass and are arranged at a large distance. When the double-motor synchronous driving device works, the two eccentric rotors synchronously rotate and the phase difference of the two eccentric rotors can be stabilized near 0 degrees, so that the inner mass is driven to realize high-speed rotary motion in the cavity of the outer mass, and the double-motor synchronous driving can realize large crushing ratio and vibration intensity. The invention combines the self-synchronizing principle of the double vibration exciters to realize the innovation of the novel vibration crusher. The crusher is suitable for crushing superhard alloy ores (such as chromium alloy ores), furnace slag of steel mills and the like.

Description

Multi-machine driven circular motion vibration crusher

Technical Field

The invention belongs to the field of self-synchronizing vibrating machinery, and relates to a multi-machine driven circular motion vibrating crusher.

Background

The crusher appeared in the former soviet union for the earliest time, and from the first generation of inertia cone crushers, the development of crushing materials by using vibration force has been continuously carried out, and jaw crushers, cone inertia crushers, roller crushers and impact crushers have been successfully developed.

Taking a roller crusher as an example, the roller crusher utilizes 2 rotating cylindrical rollers to crush ore under the action of squeezing and grinding shear, and when the ore reaches the granularity requirement, the ore is discharged from between the two rollers. The roller crusher is divided into 4 types of single roller, double three roller and double four roller according to the number of rollers. According to the shape of the roll surface, the roller is divided into a smooth surface roller and a tooth surface roller. The roller type crusher has the advantages of simple and compact structure, light weight, reliable work, convenient adjustment of crushing ratio, capability of crushing water-containing materials and the like.

Traditional roll crusher major structure is equipped with wedge or gasket adjusting device between two running rollers, and adjusting bolt is equipped with on the top of wedge device, and when adjusting bolt upwards pulled up the voussoir, the voussoir pushed up the movable roller from the fixed pulley, two running roller clearance grow promptly, and ejection of compact granularity grow, and when the voussoir was down, the movable roller took turns to the clearance diminishes of two rounds under compression spring's effect, and ejection of compact granularity diminishes. The gasket device adjusts the size of the discharged particle size by increasing or decreasing the number or thickness of the gasket, the gap between the two rollers becomes larger when the gasket is increased, and the gap between the two rollers becomes smaller when the gasket is decreased, so that the discharged particle size becomes smaller.

The common crusher has small crushing ratio, large finished product granularity, low crushing yield, high energy consumption and easy adhesion of materials, and cannot meet the crushing requirement, thereby reducing the service life of the crusher.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a multi-machine driven circular motion vibration crusher, which comprises two schemes:

the first scheme is as follows: the dynamic model of the vibration crusher comprises an inner mass, an outer mass, a vibration reduction spring and a vibration exciter; the two vibration exciters are centrosymmetric relative to the mass center of the inner mass, are arranged on the inner mass to form a rolling body and are positioned in the cavity of the outer mass; each vibration exciter is respectively composed of an eccentric rotor driven by an alternating current motor; the two vibration exciters are arranged at a large distance and rotate in the same direction, i.e. half of the connecting line of the rotating axes of the two vibration exciters is larger than the rotating radius of the inner mass

Doubling; the stable phase difference of the eccentric rotors of the two vibration exciters is 0, namely the eccentric rotors synchronously rotate, so that the inner mass is driven to rotate along the circumference of the inner wall of the cavity of the outer mass, and the materials in the gap between the inner wall of the cavity and the inner mass are crushed.

The second scheme is as follows: on the basis of the first scheme, the vibration exciter further comprises another two vibration exciters which are symmetrically arranged at the left end and the right end of the exosomal body and rotate in the same direction and are opposite to the center of mass of the exosomal bodyScale and mounted at a large distance, i.e. the half of the connecting line of the rotary axes of the two exciters is greater than the rotary radius of the exosomal body

Doubling; the exciters on the inner and outer masses are opposite in rotation direction, and the phase difference of the two exciters on the same mass is 0 deg. so as to implement the opposite-phase circular motion of two masses.

Furthermore, four groups of damping springs are arranged in the upper, lower, left and right directions of the outer mass respectively and are connected with the outer mass and the foundation.

The invention has the beneficial effects that:

the crushing ratio can be improved by adopting the vibration effect, and the superhard alloy ore, such as chromium alloy ore, slag of steel plants and the like, can be crushed by the crushing principle achieved by the vibration effect.

When the superhard ore or the iron ore is crushed, the conventional crusher cannot realize effective crushing, and the iron ore is easily adhered to a crushing working surface to cause the failure of the crusher; and through using behind the broken principle of vibration, not only can effectively improve crushing ratio, but also can avoid the adhesion of material to this life-span that improves the breaker reduces the fault rate.

Drawings

Fig. 1 is a power principle diagram of embodiment 1.

Fig. 2 is a power principle diagram of embodiment 2.

In the figure: 1, an endosome left vibration exciter; 2, right vibration exciter of endosome; 3 an endoplasmic body; 4, an exoplast; 5, a damping spring; 6, exoplast left vibration exciter; 7, an exoplast right vibration exciter.

Detailed Description

The technical solution of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

Example 1 as shown in fig. 1, an inner body left exciter 1 and an inner body right exciter 2 are symmetrically installed on an inner body 3, and eccentric rotors of the two exciters rotate in the same direction to form a rolling body together with the inner body. The eccentric rotor phase angle of the inner mass left vibration exciter 1 is

The eccentric rotor phase angle of the right vibration exciter 2 of the endosome is

The phase difference of the two eccentric rotors needs to be satisfied, namely the two vibration exciters are driven synchronously. The distance from the rotation center of the vibration exciter to the mass center of the inner mass is l₀The radius of gyration of the rolling body is l_eShould satisfy their ratio

Namely, the two vibration exciters are arranged at a large distance. The two conditions are met, the rolling bodies can be guaranteed to rotate at a high speed in the cavity of the outer body 4, and the materials are crushed. Four groups of damping springs with the rigidity of k/2 are arranged in the upper, lower, left and right directions of the outer plastid.

Example 2 as shown in fig. 2, an inner body left exciter 1 and an inner body right exciter 2 are symmetrically mounted on an inner body 3 to form a rolling body, and rotors of the two exciters rotate in the same direction. The eccentric rotor phase angle of the inner mass left vibration exciter 1 is

The eccentric rotor phase angle of the right vibration exciter 2 of the endosome is

The phase difference of the two eccentric rotors needs to be satisfied, namely the two vibration exciters are driven synchronously. The distance from the rotation center of the endoplasmic exciter 1 (or 2) to the centroid of the endoplasmic is l₀Radius of the center of revolution of the rolling body is l_eShould satisfy their ratio r_lIs greater than

I.e. the two endoplasmic exciters 1, 2 are mounted at a large distance. The two conditions are satisfied, and the rolling bodies can be ensured to rotate at high speed in the cavity of the outer body 4. The exosomal left vibration exciter 6 and the exosomal right vibration exciter 7 are symmetrically arranged on the exosomal 4, and the rotors of the two vibration exciters rotate in the same direction. The eccentric rotor phase angle of the exosomal left vibration exciter 6 is

The eccentric rotor phase angle of the right vibration exciter 7 of the exoplast is

The phase difference of the two eccentric rotors needs to be satisfied, namely the two vibration exciters are driven synchronously. The distance from the rotation center of the exosomal vibration exciter 6 (or 7) to the centroid of the exosomal is l₁The radius of the center of gyration of the exoplast is l_e2Should satisfy their ratio r₂Is greater than

I.e. the two exciters 6, 7 are mounted at a large distance. The four vibration exciters drive the inner mass 3 and the outer mass 4 to realize the opposite-phase circular motion, and dry friction motion exists between the inner mass and the outer mass. The material to be crushed is placed in the gap between the inner and outer masses.

Four groups of damping springs with the rigidity of k/2 are arranged in the upper, lower, left and right directions of the outer plastid.

Claims (3)

1. A multi-machine driven circular motion vibration crusher is characterized in that a dynamic model of the vibration crusher comprises an inner mass, an outer mass, a vibration reduction spring and a vibration exciter; the two vibration exciters are centrosymmetric relative to the mass center of the inner mass, are arranged on the inner mass to form a rolling body and are positioned in the cavity of the outer mass; each vibration exciter is respectively composed of an eccentric rotor driven by an alternating current motor; the two vibration exciters are arranged at a large distance and rotate in the same direction, i.e. half of the connecting line of the rotating axes of the two vibration exciters is larger than the rotating radius of the inner mass

Doubling; the stable phase difference of the eccentric rotors of the two vibration exciters is 0, namely the eccentric rotors synchronously rotate, so that the inner mass is driven to rotate along the circumference of the inner wall of the cavity of the outer mass, and the materials in the gap between the inner wall of the cavity and the inner mass are crushed.

2. According toA multiple-unit-driven circular-motion vibration crusher as claimed in claim 1, further comprising two additional vibration exciters symmetrically installed at left and right ends of the outer mass and rotating in the same direction, symmetrically installed with respect to the center of mass of the outer mass, and installed at a large distance, i.e. half of the connecting line of the rotation axes of the two vibration exciters is larger than the rotation radius of the outer mass

Doubling; the exciters on the inner and outer masses are opposite in rotation direction, and the phase difference of the two exciters on the same mass is 0 deg. so as to implement the opposite-phase circular motion of two masses.

3. A multi-motor driven circular motion vibratory crusher as claimed in claim 1 or 2 wherein said damping springs are provided in four sets, each set being mounted in four directions, up, down, left and right, of said outer mass to connect said outer mass to said foundation.

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