SU1560309A1 - Cone-type crusher - Google Patents

Abstract

The invention relates to cone crushers. The aim of the invention is to increase the efficiency of crushing by increasing the homogeneity of the fraction of the finished product. The crusher includes a housing 1, with which the outer cone 2 is connected by means of a support ring 3 and bearings 4 mounted in a holder. The inner cone 6 is placed with eccentricity @ and a parallel axis on the drive shaft 5 in the cavity of the outer cone. The crushing chamber is made with a calibration zone (K) having annular surfaces connected to cones. 1 hp f-ly, 1 ill.

Description

The invention relates to devices for grinding materials and can be used in the construction materials industry, mining, metallurgical and other sectors of the economy.

The purpose of the invention is to increase the efficiency of crushing by increasing the uniformity of the fraction of the finished product.

The drawing shows a cone crusher, a vertical section.

The cone crusher consists of a housing 1, to which an outer cone 2 is connected by means of a support ring 3 and bearings 4 mounted in a cage. In the outer cone 2 is placed with an eccentricity and a parallel axis on the drive shaft 5, the inner cone 6. Between the working surfaces of the outer and inner cone there is a crushing chamber with a calibration zone k made with annular surfaces connected to the cones. The annular surfaces of the calibration zone are perpendicular to the axes of rotation of the cones, while the dimensions of the calibration zone are taken from the ratio:

d ₂ > d _l ^J _r 2e and D ₂ > Di - 2e,

I where 1 — the inner diameter of the annular surface of the inner cone;

d _z is the inner diameter of the annular surface of the outer cone;

£), is the outer diameter of the annular t of the surface of the inner cone;

D ₂ —the apparent diameter of the annular surface of the outer cone;

e - eccentricity.

An eccentrically located annular groove 7 is located in the upper part of the housing 1, with which the support ring 3 of the outer cone 2 is mated in a tapered fit. the inner diameter of the upper part of the crusher body 1 differs from the outer diameter of the support ring by the amount of double eccentricity. The cone crusher also has a locking device 10 for fixing the yoke 11 relative to the support ring 3. To load the material into the crusher, a chute 13 is pivotally fixed to the bracket 12.

Cone crusher works as follows.

The drive of the shaft 5 is turned on with the inner cone 6 mounted on it. The crushed material is fed along the heat 13 to the widest part of the grinding chamber. Due to the frictional forces between the working surface of the inner cone, pieces of material and the working surface of the outer cone, the latter begins to rotate, as a result of which the pieces of material move in the horizontal plane to the narrowest part of the grinding chamber and _{5 are} crushed. Smaller pieces of material fall below, jam between the surfaces of the cones and the grinding process is repeated many times until the crushed material exits through the annular discharge gap of gauge ^{10 of the} leveling zone k. The size of the calibration zone, and therefore the size of the finished product fraction, is changed by vertical movement of the outer cone 2 by means of a threaded connection of the holder 11 with 15 support ring 3. After setting the necessary clearance, the holder 11 is fixed with a locking device 10. When jamming the cones with non-crushable material, the bursting bolts 8 are destroyed, if the deformation of the spring is exhausted, the support ring 3 together with the outer cone 2 is lifted. Destruction of bolts 8 and lifting of the support ring 3 interlocked with electric crusher, via the emergency switch 9 crusher otklyuchaet2 _5, camping. If the deformation of the springs is sufficient to allow the passage of non-crushed material through the working area, then the support ring 3 spontaneously returns to its working position. To facilitate the extraction of non-crushed material from the crusher, the support ring 3 assembly 3 with the outer cone 2 can be lifted and the material spills out. To this end, the height of the annular groove 7 of the housing 1 exceeds the size of the initial fraction of the crushed material, and the estrus 13 is pivotally mounted on the crown 35 of the matte 12.

Claims (2)

Claim 1. A cone crusher containing a core ₄ θ bore, with which an outer cone is connected by means of a support ring and bearings, an inner cone placed therein with an eccentricity and a parallel axis on the drive shaft and a crushing chamber formed with working surfaces of the cones with a calibration zone made with ring surfaces connected to cones, characterized in that, in order to increase the crushing efficiency by increasing the homogeneity of the finished product fraction, the annular surfaces are arranged in a calibrated zone perpendicular to the axes of rotation of the cones, while the dimensions of the calibration zone are taken from the relations d ₂ > di -} - 2e and D ₂ > 29, -2e, 55 where d ·, is the inner diameter of the annular surface of the inner cone; d2 is the inner diameter of the annular surface of the outer cone; Di — outer diameter of the annular surface of the inner cone; £> 2 is the outer diameter of the annular surface of the outer cone; e - eccentricity. 2. Crusher according to π. 1, characterized in that the upper part of the housing is made with an eccentrically arranged annular groove, with which the support ring of the outer cone is mated and secured by means of spring-loaded tensile bolts, while an emergency switch interacting with the burst bolts is mounted on the housing, and the inner diameter of the upper part of the crusher body exceeds the outer diameter of the support ring by an amount greater than Double eccentricity.