RU3564U1 - CENTRIFUGAL MILL - Google Patents

Abstract

A centrifugal mill containing tube grinding chambers divided into sections filled with grinding elements in the form of pipe segments, characterized in that the pipe grinding chambers are divided into sections by inclined diaphragms, filled with grinding elements in the form of perforated pipe sections of different lengths and different diameters inserted into each other friend.

Description

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Centrifugal mill

The utility model relates to the technique of fine and ultrafine grinding and activation of various materials and can be used in chemical and metallurgical, construction, pharmaceutical, perfumery and other industries.

A well-known mill company Lurga with a vertical arrangement of the pipe grinding chamber, with a separate drive pipe grinding chamber and drove and a variable distance between the axes of the chamber and drove.

The main disadvantage of this mills is that it has one step of the grinding chamber, and this, when executed vertically, does not allow increasing the grinding intensity and obtaining a homogeneous composition of the crushed material, at night that part of the material passes without being crushed.

A mill is known which contains four grinding chambers from successively connected grinding pots filled with grinding elements in the form of pipe sections and rods. The grinding chambers are mounted on a spring-loaded platform, which is connected to an unbalanced drive shaft and rod drive racks. In this mill, the loaded material is subjected to oscillating movements in succession in each grinding pot by grinding pieces of pipes and rods and is rubbed against their walls and surfaces, then along inclined holes in the bottom pots into subsequent grinding pots. and discharged from the mill.

M, cl. B 02G 13/14

In this case, obscene is subjected to additional abrasion. / German patent M607535 cl. 02C 19/15 of 11/14/76 / The disadvantages of this mill are that the destinations for grinding the material must first be crushed to a certain fractional composition. For grinding the feed material, only E || the effect of vibrational vibrational movements of the walls is used grinding pots, pipe segments and rods, so the grinding process occurs with low intensity and a very long time.

The purpose of the useful model is to increase the intensity of grinding and obtaining vlaterial homogeneous fractional composition

The goal is achieved by the fact that a centrifugal mill containing tube grinding chambers, divided by inclined diaphragms into sections, is filled with grinding elements in the form of perforated pipe sections of different lengths and diameters pressed into each other. This embodiment of the mill makes it possible to increase the grinding intensity and obtain a material of a homogeneous fractional composition. This is due to the fact that the perfect circular movements of the Kaiviep sectional grinding tubes, filled with grinding elements in the form of perforated, of different lengths and diameters put into each other under the action of centrifugal forces, rotate relative to each other, as well as slip relative to the walls of the grinding chamber. In addition, the inclined diaphragms along which the ends of the segments of the perforated pipes move, are forced to perform, 1 :: in addition to the rotational movements, also movements in the axial direction. And since the pipe segments have different diameters and lengths, their movements and movements simultaneously both rotational and axial direction are different both in speed and in amplitude, and in direction. § These complex movements of perforated pipe sections can significantly increase the grinding intensity. This is due to the influence of VII on the grinding The material being produced is mainly due to the effective shear loads arising between the sliding walls of the perforated pipe sections, which are sliding between each other and between the walls of the grinding chamber. The holes in the “ee MMiPie walls of the pipe sections also contribute to an increase in grinding intensity due to multiple the movement of material between the walls of the pipe segments and the walls of the grinding chamber.

 labor

camshafts 6, connecting rods 7, drive gear 8, loading hoppers 9, diaphragms 10, discharge nozzles 11..

The mill operates as follows: the feedstock through the loading hoppers 9 and the hollow eccentric axes 4 hits the first section of the pipe grinding chamber 3, making circular movements on the freely rotating eccentric axes 4, advanced / 1ш: connecting rods 7, which are connected to the 6 crankshaft shafts 5 drive gear 8. Due to the circular movements of the pipe grinding chambers 3, the crushed material and the segments of the perforated pipes 2 acquire centrifugal forces. Due to the fact that the perforated pipe sections sew different diameters and lengths, they rotate relative to each other and the walls of the grinding chamber at different speeds and their walls slip relative to each other, subjecting to abrasion and shear loads the material being ground between them. shear loads and abrasive loads when moving the perforated pipe segments in the vertical axial direction due to the inclined execution of the diaphragms 10, holes made in the walls of the pipe segments 2 additionally contribute to the impact on the material being ground by moving it gently between the walls of the pipe segments 2 and the walls of the tube grinding chamber 3. After passing through the grinding process in the first section of the grinding chamber 3, the material being ground reaches a certain fractional composition through the openings of the diaphragm 10 and passes to the next stage of the grinding chamber 3, where subjected to the same loads and crushed to a finer fractional composition. Thus, having passed all the steps and sections in the tube mill grinding chamber 3, crushed sacrificial material reaching a homogeneous fraction composition and fine grinding is output from the mill through the discharge pipes 11.

Thus, the proposed utility model of the centrifugal mill design allows one to obtain a positive effect not achieved by the known technical solutions.

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Claims (1)

A centrifugal mill containing tube grinding chambers divided into sections filled with grinding elements in the form of pipe segments, characterized in that the pipe grinding chambers are divided into sections by inclined diaphragms, filled with grinding elements in the form of perforated pipe sections of different lengths and different diameters inserted into each other friend.