RU2029675C1 - Activating mixer - Google Patents

Abstract

FIELD: building mixture preparation. SUBSTANCE: activating mixer has a vertical housing, in which a rotor with ribs and beaters is mounted. The housing is in the form of cones, joined by their bases; cone generatrices are inclined relative to a rotation axis by an angle, providing baffling of material particles on the ribs of the rotor. The rotor is placed lower, than a plane of the above mentioned cone base joining. EFFECT: enhanced efficiency. 5 cl, 6 dwg

Description

 The invention relates to a device for the preparation of clay mixtures for semi-dry pressing of building products and can be used for the preparation of finely dispersed mixtures of several components.

 The purpose of the invention is to increase the degree of activation of the material - is achieved by applying repeated cycles of effects on the underfinished fraction. This allows you to increase the operating life of the device due to the timely removal of intractable inclusions from the zone of impact on the material.

 The goal is achieved in that in the case, made in the form of cones mated with bases, the generators of which are located to the axis of rotation at an angle that ensures reflection of the material particles on the rotor ribs, the rotor is placed so that its upper face is below the level of conjugation of the cones. This allows you to strike with ribs, beats and the surface of the body on all particles of the supplied material, after which sufficiently crushed particles are moved to the outlet pipe, and larger inclusions are subjected to repeated impacts until the desired degree of particle grinding is achieved. Selective application of additional effects on the underfinished fraction is obtained due to the fact that the particles of the mixture after the action of the ribs and beat under the action of centrifugal forces tend to the inclined face of the lower cone of the body, reflected from which, are sent to the inclined face of the upper cone, reflected from which, return to the rotor . Smaller particles, not possessing sufficient inertia, do not have the ability to go the specified path and, under the influence of gravity, move to the branch pipe.

 In addition, the mixer-activator can be supplemented as follows. Scrapers in the form of rotary blades are fixed along the periphery of the disk, having the ability to rotate relative to axes located along the line of intersection of the planes of the scrapers with the rotor. The ability to change the angle of inclination of the scrapers (angle of attack of the blades) allows you to change the magnitude of the generated air flow, which is directed against the direction of flight of the particles of the mixture, and ensures the removal of particles from the activation zone. The outer part of the scrapers clean the surface of the housing from sticking particles. The possibility of turning the scrapers around their axes eliminates the possibility of jamming of the rotor when large particles get into the gap between the scrapers and the casing.

 A conical shell is installed in the housing of the activator mixer at the level of the upper part of the lower cone in the rotor plane, the generators of which and the upper cone are angled to ensure reflection of the mixture particles in the central part of the rotor, in the area of which the ribs have bevels to the center with the formation of equal grooves. Large particles, the size of which exceeds the width of the grooves, moving along the inclined planes of the platforms, rush to the inclined faces of the upper cone of the body, reflecting from which, through the space between the walls of the body and the shell, they fall on the grate installed in the lower part of the body. Particles, the sizes of which allow them to move in grooves between the ribs, are discarded to the inclined faces of the lower cone, i.e., they are sent to repeated grinding and activation cycles or are removed to the branch pipe.

 The inner surfaces of the body and the shell have a lining of wear-resistant material, upon impact of which the effect of grinding particles is increased.

 The surface of the lining is made with ledges with an angle of inclination, providing reflection of the particles of the mixture in the Central part of the rotor.

 In FIG. 1 shows an activator mixer; in FIG. 2 is a section AA in FIG. 1; in FIG. 3 - housing of the mixer-activator, section BB in FIG. 1; in FIG. 4 is a fragment of a cross section of the upper cone of the housing with a lining, section BB in FIG. 1 and 3; in FIG. 5 is a fragment of a section of a shell with a lining, section G-D in FIG. 1; in FIG. 6 - rotor, section DD in FIG. 1.

 The mixer-activator consists of a rotor 1 with rows of ribs 2 and beat 3, mounted on its upper face. The sections of the ribs 2 in the central part of the rotor have beveled faces 4, thereby forming peculiar guides to give the direction of flight to large inclusions, and grooves 5 for moving smaller particles into them. On the periphery of the disk of the rotor 1 with the possibility of changing the angle of inclination, scrapers 6 are fixed, which can be rotated in the axes of the beat 3. The rotor 1 by means of a bearing 7 is fixed in the housing 8 with the possibility of forced rotation around the vertical axis 9. The housing 8 is made of upper 10 and lower 11 cones that are paired with each other. In the upper part of the lower cone 11 at the level of the rotor 1, the connecting shell 13 is fixed to the housing 8 with a connecting shell 13 with the formation between the walls of the shell and the housing 8 of the through annular cavities 14. The angles between the faces of the cones and the base of the shell 13 and the upper cone 10 are made so that reflected from particles return to the central part of the rotor 1. Wear-resistant plates of the lining 15 are attached to the inner surfaces of the shell 13 and the upper cone 10, and the surface of the lining of the upper cone 10 has ledges, the tooth angle of which x provides a reflection of the particles of the mixture in the Central part of the rotor. In the upper part of the housing 8 there are holes 17 for supplying the mixture components. A grill 18 is also installed in the housing 8 under the rotor 1, and in the wall of the cone 11 an aperture 19 is made with a slide gate. In the lower part of the housing 8 there is a branch pipe 20.

 The mixer-activator operates as follows.

 The components of the mixture previously passed through the grating (not shown) through the openings 17 are continuously fed to the sections of the rotor 1 at a distance of its half-radius from the axis of rotation, where the ribs 2, striking the particles of the mixture, destroy the lumps and discard them on the lining 15 of the shell 13, while the particles mixes on their way collide with beat 3, and also hit each other. Crushed particles due to their small size, without sufficient inertia, under the influence of gravity, scrapers 6 and the air flow created by the movement of inclined scrapers, fall into the lower part of the housing 8. Depending on the angle of inclination of the planes of the scrapers 6 to the plane of the rotor 1, the air flow, while the scrapers 6 are perpendicular to the tangent of the cylindrical part of the rotor 1, so that between the scrapers 6 and the lining of the shell 13 there is a minimum gap. When the rotor 1 is rotated, the scrapers 6 create an air flow from the upper cone 10 to the lower cone 11, and also clean the lining 15 of the shell 13 of the sticking particles of the mixture. Lumps of the mixture, stones, all kinds of inclusions, which after the initial impact of the ribs, beat and impacts on the walls of the case did not collapse to the required sizes, having a large mass, hence inertia, are reflected from the lining of the shell 13, hit the beveled plane of the ledges of the lining of the upper cone 10 and are reflected in the central part of the rotor 1. Particles of the mixture, the sizes of which do not exceed the width of the grooves 5, recline by centrifugal force on the lining of the shell 13, repeatedly subjected to all the above effects of the ribs, beat. Particles of the mixture, the sizes of which exceed the width of the grooves 5, along the inclined planes of the beveled faces 4 ribs 2 along an ascending path are directed to the lining of the upper cone 10, reflected from which through the cavity 14 fall into the lower part of the housing 8 on the grid 18. As large particles accumulate on the grate 18 in the off state of the mixer-activator, the grate is cleaned through the opening 19. The crushed proactivated mixture is removed through the outlet pipe 20.

Claims (5)

 1. MIXER-ACTIVATOR, comprising a vertically located housing with loading and unloading holes and a rotor installed in it with ribs and beats mounted respectively on the inner and outer concentric circles of the disk, characterized in that the housing is made in the form of cones mated with bases, the generatrices of which are located to the axis of rotation at an angle providing reflection of the particles of material on the ribs of the rotor, the latter being placed below the plane of conjugation of the cones.  2. The activator mixer according to claim 1, characterized in that it is equipped with scrapers in the form of rotary blades mounted on the periphery of the disk.  3. The mixer-activator according to claims 1 and 2, characterized in that it is equipped with a conical shell mounted in the upper part of the lower cone in the plane of the rotor, the generators of which and the upper cone are angled to ensure reflection of the mixture particles in the central part of the rotor in the zone which ribs have bevels to the center with the formation of equal grooves.  4. The activator mixer according to claim 3, characterized in that the inner surfaces of the upper cone and the shell have a lining of wear-resistant material.  5. The mixer-activator according to claim 4, characterized in that the lining of the upper cone has ledges with an inclination angle that ensures reflection of the particles of the mixture in the Central part of the rotor.

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