SU1759459A1 - Crusher - Google Patents

Abstract

Use: for grinding lumpy materials, mainly clay, in the preparation of a semi-finished product in the production of expanded clay, aggloporate and brick. SUMMARY OF THE INVENTION: The prepared raw material is loaded onto a movable base; for example, a belt conveyor 5, and fed into the casing 1. After leveling with the loading width & 6, the raw material goes to the first shaft, the working bodies of which, for example, three-lobe milling cutters 3, capture and move it in the direction of rotation of the shaft. When interacting with counter-rotating milling cutters 3 of the next shaft, pre-compaction and grinding of the raw material takes place. After successive repeated grinding, the belt conveyor 5 and the cutters of the last shaft remove raw materials from the casing 1. The unloading is controlled with the help of a gate 7. 2 Il.

Description

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The invention relates to devices for grinding bulk materials and can be used in the building materials industry for crushing and mixing clay raw materials in the preparation of semi-finished products that are used for the production of expanded clay, agloporite and bricks.

A crushing device is known, which contains a toothed roller and a crushing plate mounted above the scraper conveyor, the crushing plate being made with shelves whose width gradually increases from the point of material loading, and in front of the crushing zone the shelves overlap the latter not less than half their length.

The drawback of the device is the impossibility of obtaining a product of fine fractions, since the minimum particle size cannot be less than the height of the scraper, which should be sufficient to move large clods to a toothed roll. Moreover, if the rotation speed of the toothed roll is large, then backing is created by moving lumps, which can then be poured from the side of the scraper conveyor, which increases the percentage of the coarse fraction. If the speed of the toothed roll is small and grinding is carried out by crushing a coma, then large fractions are formed, which are

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These are placed on the slab and retracted by scrapers without additional grinding.

The closest to the invention by technical essence is a crusher, mainly clay materials, containing a number of rotating shafts with working bodies located in the grooves between the working bodies of adjacent shafts.

The disadvantage of the crusher is the low level of grinding.

The purpose of the invention is to increase the degree of grinding.

Figure 1 presents a schematic crusher, top view; figure 2 - section aa in figure 1.

The crusher contains a casing 1. in which is placed a row of rotating shafts 2 with working bodies made, for example, in the form of three-blade cutters 3, located in the grooves between the cutters of adjacent shafts. The number of shafts is selected depending on the physical properties of the raw material and the degree of its grinding. The movable base of the casing, made, for example, in the form of a belt conveyor 4, is adjacent to the working bodies with a gap of 5-8 mm, ensuring the performance of these elements. The working bodies are placed on the first and subsequent along the material movement shafts with decreasing pitch to reduce the load on the shaft drive. In the casing from the side of loading and unloading, regulating gates 5 and 6 of loading chute 7 are installed.

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Crusher works as follows.

The prepared raw material is loaded through the chute 7 onto a belt conveyor and fed into the casing 1, where, after being aligned with the loading gate 5, it goes to the first shaft 2, rotating like all subsequent shafts with a frequency of 500-60 rpm.

The mills 3 of this shaft capture the raw material and, when interacting with counter rotating mills 3 of the next shaft, pre-compact and crush it, and also discard particles larger than the pitch of the mills of the second shaft in the direction of the first shaft between the mills of the second and third shafts, which also have opposite rotation, further compaction and grinding of raw materials with simultaneous return of large particles in the direction of the second shaft.

After successive repeated grinding, the conveyor belt and cutters of the last shaft remove the raw material from the casing. Unloading regulate using the gate 6.

Claims (1)

The invention of the crusher is mainly for clay materials, containing a number of rotating shafts with working bodies located in the grooves between the working bodies of adjacent shafts, so that, in order to increase the degree of grinding, the crusher is equipped with a casing with a movable base in contact with the working bodies . 1 gVvxxxxllllAl vAAl: v7vyv PLAlAl / sL w xll777Vxx TE ZHUU & OUT Phi2: 2