RU2147462C1 - Pulverizer for loose materials - Google Patents

Abstract

FIELD: loose material pulverizers. SUBSTANCE: pulverizer has housing with anti-impact members, loading and unloading branch pipes, rotor with rigidly articulated blades whose inner surfaces are provided with radial grooves; foreign matter catcher made in form of squirrel cage is articulated on shaft inside rotor. EFFECT: enhanced durability of working members; avoidance of damage; reduced power requirements. 3 dwg

Description

 The invention relates to devices for grinding agricultural materials, in particular for feed preparation, and can also be used in the construction, chemical and other industries.

 Known chopper bulk materials containing a housing with shockproof elements, a rotor with rigidly and pivotally fixed blades, loading and unloading nozzles.

 Known shredder does not contain protective devices that prevent the penetration of solid foreign objects to the working bodies, which can lead to jamming and failure of the working bodies. Also, when the material moves along the blades, there are no guide elements on the latter, which leads to an increase in the energy consumption for grinding the material.

 The objective of the invention is to increase the durability of the working bodies, preventing breakdowns and reducing energy for grinding.

 This problem is solved by the fact that in the grinder of bulk materials containing a housing with shockproof elements, loading and unloading nozzles, a rotor with rigidly and articulated blades, loading and unloading nozzles, a trap of foreign objects in the form of a squirrel wheel is pivotally mounted on the shaft inside the rotor, and radial grooves are made on the inner surfaces of the blades.

In FIG. 1 shows a General view of the chopper,
in FIG. 2 is a section along AA in FIG. 1,
in FIG. 3 is a section along BB in FIG. 1.

 The bulk material shredder comprises a housing 1, in which a rotor 2 is located with fixed blades 3 fixed thereon and movable blades 5 pivotally suspended on its axles 4, shockproof elements 6 concentrically located inside the housing with a gap relative to the outer edges of the blades, a loading device 7, a foreign trap objects in the form of a squirrel wheel 8. On the blades 3 and 5, forming a wedge gap 9, made radial grooves 10.

 The chopper works as follows.

 The crushed material from the loading device, passing through a trap of foreign objects, which holds impurities, enters the working chamber. Under the action of the centrifugal force caused by the rotating rotor 2, the particles of material are thrown into the wedge slot 9 and, moving along the radial grooves 10 on the blades 3 and 5, are sent to the periphery. Particles moving with a high speed wedge the gap and go beyond it into the grinding zone, formed by shockproof elements and the edges of the blades 3 and 5, grinding occurs. In this case, the particles move between the radial grooves, are compressed by the movable blade 5 by centrifugal force and are in a pinched state, in which the energy consumption for grinding is lower than when the particles move freely. Crushing products are sent to a receiving device (not shown).

Claims (1)

 A bulk material shredder containing a housing with shockproof elements, a rotor with rigidly and pivotally fixed blades, loading and unloading nozzles, characterized in that a trap of foreign objects in the form of a squirrel wheel is pivotally mounted on the shaft inside the rotor, and radial grooves are made on the inner surfaces of the blades.

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