RU2499632C1 - Percussion-type rotary crusher - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to machine building, particularly, to percussion-type rotary crushers and mills for grinding various ores and nonmetals. Proposed crusher comprises housing 1, initial material feed pipe 2, finished product discharge flute 3, baffle plates 4 secured to sidewall of housing 1, accelerator fitted on the shaft in said housing and accelerator drive. Accelerator is composed of top element made up of lateral surface of truncated cone 5 with central bore 6 for initial material feed, bottom element made up of disc 7, conical distributor 9 and accelerating blades arranged between said top and bottom elements.

EFFECT: higher efficiency.

1 dwg

Description

The invention relates to mechanical engineering, in particular to impact centrifugal crushers and mills, and can find application in the construction, mining, chemical, metallurgical and other industries for crushing and grinding various ore and non-metallic bulk materials.

Known impact centrifugal crusher containing a housing, a nozzle for supplying source material located in the upper part of the housing, estrus for output of the finished product located in the lower part of the housing, fender elements mounted on the side wall of the housing, an accelerator located in the housing on a vertical shaft , and the accelerator drive, while the accelerator consists of a disk, a cone distributor fixed in the central part of the disk, and accelerator blades mounted on the disk (RU No. 65788 U, В02С 13/14, published August 27, 2007).

However, this crusher is characterized by low crushing efficiency of the material and high abrasive wear of the accelerator. These shortcomings are associated with the fact that the movement of the material in an open accelerator is not ordered in the horizontal direction, but is chaotic. The low crushing efficiency is due to the fact that the particles of the material scatter in different directions, acquire unequal acceleration, and at different speeds they hit the reflective elements and at different angles. High abrasive wear is caused by the fact that some particles of the material hit the housing cover, bounce off the peripheral part of the accelerating blades and destroy them.

Also known is a centrifugal impact crusher containing a casing, a nozzle for supplying raw material located in the upper part of the casing, estrus for output of the finished product located in the lower part of the casing, fender elements mounted on the side wall of the casing, an accelerator located in the casing the shaft, and the accelerator drive, wherein the accelerator consists of an upper element with a central hole for supplying source material made in the form of a disk, a lower element made in the form of a disk, conically a distributor and accelerator vanes disposed between the upper and lower elements (RU 84 261 U, V02S 13/14, published 10.07.2009).

However, the known crusher has a low productivity. This disadvantage is related to the fact that the upper accelerator element, made in the form of a disk with a central hole, is parallel to the lower accelerator element, made in the form of a disk. In this regard, the cross section of the central part of the accelerator is much smaller than the cross section of the peripheral part of the accelerator, which limits the throughput of the central part of the accelerator.

The objective of the invention is to increase the productivity of the crusher with the same parameters of the accelerator by ensuring the passage through the accelerator of the source material in larger quantities due to the gradual increase in the radial cross section of the accelerator from the peripheral to the central part.

The essence of the invention lies in the fact that to solve the problem by the specified technical result, a centrifugal impact crusher containing a housing, a nozzle for supplying raw material located in the upper part of the housing, estrus for output of the finished product, located in the lower part of the housing, breaker elements, mounted on the side wall of the housing, the accelerator located in the housing on a vertical shaft, and the accelerator drive, while the accelerator consists of an upper element with a central hole for chi starting material, bottom member formed as a disc, conical distributor and accelerator vanes disposed between the upper and lower elements, characterized in that the top of the accelerator member is designed as a lateral surface of a truncated cone.

The invention is illustrated by the drawing - General view of the crusher, vertical section.

The centrifugal impact crusher comprises a housing 1, a nozzle 2 for supplying the starting material located in the upper part of the housing 1, estrus 3 for outputting the finished product, located in the lower part of the housing 1, fender elements 4, mounted on the side wall of the housing 1, an accelerator, consisting from an upper element made in the form of a lateral surface of a truncated cone 5 with a central hole 6, a lower element made in the form of a disk 7, accelerator blades 8 and a cone distributor 9, and located on a vertical shaft 10, etc. accelerator table (not shown in the drawing).

The vertical shaft 10 can be installed in the bearing units or on a gas-static support.

The invention is used as follows.

By means of a drive, the accelerator is rotated at the required technological speed. Through the pipe 2 and through the hole 6, the source bulk material is fed to a cone distributor 9, which ensures uniform distribution of material in the accelerator. Under the action of the field of centrifugal forces, the material enters accelerator blades 8, which give the material acceleration. Accelerated material flies out of the accelerator, hits impact elements 4, collapses into several particles, and is discharged from the crusher through estrus 3.

Due to the fact that the upper element of the accelerator is made in the form of a lateral surface of a truncated cone 5, the passage section of the accelerator in the central part is increased and corresponds to the passage section in the peripheral part. Due to this, the throughput and, accordingly, the productivity of the crusher increase, without increasing the parameters of the accelerator.

Claims (1)

An impact-centrifugal crusher containing a housing, a nozzle for supplying the starting material located in the upper part of the housing, estrus for output of the finished product located in the lower part of the housing, fender elements mounted on the side wall of the housing, an accelerator located in the housing on a vertical shaft, and an accelerator drive, wherein the accelerator consists of an upper element with a central hole for supplying the starting material, a lower element made in the form of a disk, a cone distributor, and accelerator blades d disposed between the upper and lower elements, characterized in that the top of the accelerator member is designed as a lateral surface of a truncated cone.