RU2292241C2 - Conical vibratory crusher with intersecting axes of vibration exciters - Google Patents

Abstract

FIELD: conical vibratory crusher for production of crushed cubic stone used in construction industry, and also for ore preparing at ore preparation plants for rare-metal ores or diamond-bearing ores, where excessive grinding of product is inadmissible.

SUBSTANCE: conical vibratory crusher has outer housing resiliently mounted on support and provided with drive vibrators with out-of-phase self-synchronization. Axially aligned internal movable cone and drive are placed within casing. Vibrator pins are located on outer housing for angular displacement relative to vertical axis and are positioned at an angle of 30-55 deg in opposite direction relative to vertical plane. Movable internal cone is positioned by means of silent block. Reversal-type drive is used in construction.

EFFECT: increased efficiency and extent of crushing materials.

1 dwg

Description

The invention relates to fine crushers and can be most widely used for the production of building cube-shaped crushed stone, as well as for ore preparation at ore dressing plants of rare-metal or diamond-containing ores, where over-grinding of the product is unacceptable.

Known cone crushers with an eccentric drive have not undergone radical reconstruction for 130 years, so their degree of crushing still does not exceed 5, and the cube-shaped crushed stone is in the low range of 75 ÷ 85%. In addition, their design remains difficult to manufacture due to the need for a branched fluid lubrication system.

The same difficulties in design and lubrication are characteristic of inertial cone crushers, however, the technological parameters in them are much higher: the degree of crushing reaches 20, and the cubical shape of crushed stone reaches 95%.

A known inertial crusher (USSR AS No. 504557, published on 02.28.76), comprising a housing, on a spherical support of which there is a movable inner cone, carrying a beam articulated with its shaft and mounted on its ends with vibrators rotating at its ends with bearings synchronously and in phase. Having a high degree of crushing, the crusher has a complex structure and low reliability, which limits its application in industry.

A cone crusher is also known (USSR AS No. 1768278, published October 15, 1992), comprising a housing with an inner cone elastically supported on it, the shaft of which is equipped with a vibrodrive to provide oscillations of the inner cone in the horizontal and vertical directions. Like the previous analogue, this crusher has a high degree of crushing with low reliability. In this regard, it has not found application in industry.

Known for the prototype vibration crusher (USSR patent, No. 1733099 A2, published 04.15.87), comprising a housing with a drive out-of-phase self-synchronized vibrators and an outer cone elastically supported on the housing of the internal coaxial cone, which in turn is elastically supported on a common support.

The crusher provides a minimum of overgrinding with a feed size of almost two times larger than that of cone crushers of the same size, while maintaining the simplest design, in which there are no spherical bearings, nor sliding bearings, nor liquid lubricant. However, with high reliability, the crusher has low productivity and degree of crushing.

The objective of the present invention is to create a crusher providing high technological performance, both in terms of productivity and degree of crushing, with the possibility of adjusting the degree of crushing from 4 to 30.

The task is realized in a cone vibration crusher containing an outer cone that is resiliently mounted on a support and driven by out-of-phase self-synchronized vibrators, in which a movable inner cone and a drive are coaxially mounted, characterized in that the axis of the vibrators are mounted on the outer cone with the possibility of angular movement relative to the vertical axis and installed at an angle of 30-55 ° in opposite directions with respect to the vertical plane, while the movable inner cone is installed with by the power of the silent block, and the drive is made reversible.

A device that implements the claimed distinctive features shown in the drawing.

The crusher comprises an outer cone 2, which is resiliently mounted on a support 1, with drive antiphase self-synchronized vibrators 3, in which, movable inner cone 5 is mounted coaxially with the help of silent block 4.

Crusher works as follows. When counter-rotation of the vibrators creates an alternating vertical force and torque, forcing the outer cone 2 through the silent block 4 to act on the inner cone 5, which will perform antiphase longitudinally torsional (screw) vibrations. At the moment of convergence of the cones and their relative rotation, the material is destroyed. During the reverse stroke, the crushed material is carried along in a spiral towards the discharge side. The resulting product, with minimal regrinding, will have a high percentage of cuboid-shaped grains. Moreover, by changing the nominal angle of inclination β within 30 ÷ 55 ° and the reverse of the electric motors, it becomes possible to control the speed and direction of passage of the material through the crushing space formed by the outer and inner cones, as well as the amount of shift, which will entail an increase in productivity and achievement technologically necessary degree of crushing from 4 to 30. In particular, the installation of vibrators at an angle of 30 ° provides a degree of crushing 12, their installation at an angle of 55 ° will increase it to 30.

Thus, the implementation of the distinguishing features ensures the fulfillment of tasks.

Claims (1)

A cone vibratory crusher containing an outer cone resiliently mounted on a support with driven antiphase self-synchronized vibrators, in which a movable inner cone and a drive are coaxially mounted, characterized in that the axis of the vibrators are mounted on the outer cone with the possibility of angular movement relative to the vertical axis and are installed at an angle of 30-55 ° in opposite directions with respect to the vertical plane, while the movable inner cone is installed using the silent block, and the drive is en reversible.