SU363524A1 - CRUSHER - Google Patents

Description

The invention relates to the field of mechanical processing of minerals and can be used in mining enterprises for crushing iron ores and other lump materials. A crusher is known, comprising a housing and upper and lower crushing bodies rotating in a horizontal plane. The purpose of the invention is to increase the efficiency of crushing. This is achieved by the fact that the crushing bodies are connected by elastic elements, and each of the upper fractions n1, their bodies, is made with a piston entering the cylinder of each of the springs; In addition, the mass of the upper body is equal to the sum of the masses of the underlying, and the mass of the lower fractioning body is less than the mass of the average. FIG. 1 shows a crusher, side view, cut; in fig. 2 is a section along the line A-A in FIG. one; pas figs. 3 - helical caiacs on the surface of a shot of the body of the body on the side and a section along BB. Crusher bodies 2-4 with a spherical surface are placed in the crusher body 1. On the surface of the bodies there are helical grooves, which decrease in depth and narrow in width downwards, along which pieces of material pass the crushing bodies. The casing is i-c and has a concave smooth surface that forms gaps with crushing bodies, where in narrow places, in zones B, C, and C of crushing, material is crushed. The crushing bodies are connected by means of guides and 6. mounted on a sliding fit, and 7-9, and are all supported together on the bearing 10 by a spring 11 in such a way that they all together and individually can make a reciprocating motion in vertical plane. In addition, with the help of a vertical shaft 12, a spline joint 13 and a conical non-distributing 14, the crushing bodies can rotate in a horizontal plane from an external drive. The drive of the reciprocating movement of the crushing bodies is served by the cylinders 15 and 16, which are installed in such a way that each upper crushing body is simultaneously a composite for the lower cylindrical one. In cylinders filled, for example, with oil, electrodes 17 and 18 of dischargers are installed, which serve to produce electrical discharge in the working fluid and under the pressure created by the pump (not shown). To suppress the shock wave, labyrinths 20 and 2 are installed between the cylinders and the oil pipe 19. A high voltage is applied to the arresters over the cable (not shown in the drawing).

General adjustment of the clearances of the crushing zones of all three crushing bodies is carried out in subframe 22, and individual adjustment by amortization 23 and 24.

The described crusher works as follows. The material to be crushed is continuously fed from above through the loading slot a. Under the action of the false and reciprocating movements of the crushing body 2 and through the helical grooves on its surface, the material falls under the body of the crushing zone B, where it is crushed. From the crushing zone of the upper crushing body, the material flows by gravity into the charging wedge b, from where it enters the crushing zone of the middle crushing body, and then into the loading slit in the crushing zone D of the lower crushing body and leaves the crusher through the discharge opening 2. Thus the material undergoes multiple crushing.

The work of fractions of bodies is as follows. Under the action of an electrical discharge between the electrodes J8 in the working fluid of the cylinder 15, an electro-hydraulic effect arises, causing a pulse increase in pressure in the cylinder to many hundreds of atmospheres, which is transmitted to the ground. Since each upper crushing body serves as a rock in the cylinder of the lower body, and the mass of the upper body is equal to the sum of the masses of the middle and lower body (3 and 4), the upper body moves upward and the underlying body moves downward by the same distance. At the end of the momentum under the action of springs 9 and 11, all three crushing bodies return to their original position until the next impulse, and so on.

Under the action of an electrical discharge between the electrodes, 17 a pressure impulse arises in the working fluid of the cylinder, the action of which is transmitted to the lower fractionating body, whose mass is less than the mass of the average. In this case, the lower body moves downward, and the two upper bodies remain motionless due to the large difference in mass. The pulses in the lower cylinder occur in the intervals between the pulses of the upper cylinder, therefore, the lower fractional body performs twice as many reciprocating motions as the upper bodies.

The practical frequency of the discharges between the electrodes can be accepted by a loader, i.e., equal to the frequency of the input alternating voltage of 50 Hz, but due to the large crushing bodies and the inertia of the system, the frequency of the reciprocating movements of the crushing bodies will be less and is optimal. Depending on the hardness of the material being crushed, all three bodies, for example, MO0: will pulsate at the same frequency as the pulses of one upper cylinder or, for example, two upper ones will pulsate at a lower frequency, and the lower one - with a higher frequency.

Prevention Invention

Claims (2)

1. Crusher containing body and rotating in horizontal plane: upper bridges 0 and nile are crushing bodies, characterized in that, in order to improve the efficiency of crushing, crushing bodies are connected by elastic elements, and each of the upper crushing bodies is made with a force that is in 5 cylinder of each of the underlying bodies. 2. Droplet; ka according to claim 1, characterized in that, in order to be able to control the frequency of the reciprocating motion .  The crushing bodies, the mass of the upper body is equal to the sum of the masses of the underlying bodies, and the mass of the lower crushing body is less than the mass of the middle crushing body. B 2 9 i | g / --- - / Z b, l