SU1708410A1 - Crushers - Google Patents

Description

The invention relates to a power system, to a coal bean technique and can be used in the building, coking and other industries.

The purpose of the invention is to increase the productivity and reliability of the crusher, as well as to improve the quality of the crushed material by reducing its waste.

Fig. 1 shows a centrifugal crusher, general view; FIG. 2 is a portion of section A-A in FIG. 1; Fig. 3 is a portion of section BB in Fig. 1.

The crusher includes a housing 1, in which a rotor 3 is mounted on a vertical shaft 2, consisting of a hub 4 acceleration disk 5 with blades b, sash 7 tilted down on the acceleration disk 5 with a finger 8. The rotor 3 is fixed on the shaft 2 of the bearing unit 9, On the lower shaft of the bearing unit is fixed driven pulley 10 V-belt transmission,

In the housing 1 through the cover 11 fixed stationary grinding elements 12, for example, in the form of a ring with radially oriented protrusions. In the cover 11 there is a loading opening 13. Concentric to the rotor 3 there is mounted an annular screen grille 14.

On the flap 7, part 15 of the blade 6 is fixed. A discharge port 16 is installed in the lower part of the metal collector 17, A part of the surface of the acceleration disk 5 is cut out on the periphery, forms the flaps 7 and is connected to the acceleration disk 5 by one side of the blade 8, mounted on the main surface of the acceleration disk 5,

Crusher works as follows.

The source material through the loading neck 13 enters the central part of the rotor 3 disk 5 and is rotated by centrifugal forces to the periphery of the disk 5. Under the action of centrifugal forces and counter flow, the flaps 7 rise on the rings 8, and Coriolis forces cause the movement of the material along the accelerating blades 6 and its peripheral part 15,

Crushing occurs between the protrusions of the grinding elements 12 and part 15 of the blade on the flap 7. Pieces smaller than

the width of the gap between the fixed fragments of the elements 12 and the accelerating disk 5 under the action of centrifugal forces are thrown against the walls of the body, and under the action of

gravity falls down through the discharge opening 16, Pieces of large size (not cracked to the desired size) under the action of inertial forces, hitting the wall of the cover 11, bounce off

back to the central part of the acceleration disk 5. arrive at the re-crushing. Incomplete objects, for example, metallic inclusions, squeeze the flap 6 down through the portion 15 of the blade, and under the action of

The centrifugal forces are thrown to the grate 14, which delays them and under the deistality of gravity they fall down and out of the crusher through the throat of the metal collector 17.

Thus, the proposed design provides a reliable separation of unbreakable inclusions, and large pieces of crushed material returns for further crushing. This increases the productivity of the crusher and the reliability of its operation. The economic effect from the use of the invention is due to increased productivity of the crusher, reduced waste

crushed material, the reliability of the fuel supply path of the boiler.

Claims (1)

Invention Formula A centrifugal crusher comprising a housing with a loading and unloading mouths, a rotor mounted therein with a vertical axis of rotation in the form of an accelerating disk with blades and fixed in the housing and protruding grinding elements above the periphery of the accelerating disk, in order to increase productivity and crusher reliability, as well as improvements the quality of the material to be crushed by reducing its waste, the acceleration disk is made with openings around the periphery for outputting unbreakable objects and with foldable flaps, and each blade is made up of two sections along the length of one piece, one of which is located on the periphery and fixed on the leaf.  I-xJ 1 7 j FIG. 2 FIG.