SU66819A1 - Colloid mill - Google Patents

Description

The proposed colloid mill has two working disks, on which, along concentric circles, there are teeth with radial grooves between them, mutually entering into annular grooves.

Distinctive feature

The mill is that the annular grooves on the discs are made deeper than the radial grooves in order to overlap the radial gaps between the teeth to prevent the penetration of the material being processed.

Another distinctive feature is that to adjust the fineness of the grinding by changing the size of the exit slit for each disk, there is a fixed ring on one of them.

In FIG. 1 shows the proposed mill in longitudinal section; FIG. 2 is a view of the arrow A in FIG. one; FIG. 3 and 4 - the working disk of the mill in two projections; fit 5 and b-h; axially adjustable ring with axial movement for adjustment; FIG. 7 and 8 is another version of the adjustable ring, rotated at a certain angle.

On the plate / in the housing 2 there is a bearing sleeve 3, the driving shaft 4 of the mill rotor, rotated by an electric motor by means of the coupling 5. A rotor disk 6 is mounted on the shaft 4, on which is mounted a working disk 7 having concentrically arranged teeth 8 in the form of triangular prisms with circular and radial grooves between them. In this case, the circumferential curved faces are abrasive working surfaces, and the lateral radial faces, when intersecting with the circumferential faces, form the surrounding working edges of the teeth.

The teeth are arranged either as separate zones with different or equal width of the gaps or without them being divided into zones.

The grooves between the rows of teeth of the rotor disk 7 include similar rows of teeth of a stator disk 11 fixed in a cover 12 entering the working box 13. A peripheral series of teeth of a stator working disk 11 is covered by an adjusting ring 14 covering the interdental grooves in the larger or to a lesser extent, and thus, regulating the fineness of grinding the material being processed. The adjustment ring 14 can be constructed either solidly with axial movement to change the size of the size of the annular gap (Fig. 5 and 6), or provided with windows 15 corresponding to the space stops between the teeth of the stator / disk (Fig. 7 and 8). In this case, turning the ring 14 through one or another angle results in a change in the size of the opening of the windows 15 for the passage of the material, which changes the degree of grinding.

The movement of the disk 7 in the axial direction is also possible using the rings 16 of the bearing sleeve 3 together with the shaft 4, which allows the required clearance between the working surfaces and the cutting edges of the disks 7 and 11 to be established. The rotor disk 6 is provided with blades 17 for ejection of the material for the purpose of circulation at o: 6pai6oTK e flowable pastes or. for the purpose of withdrawing the resulting powder and performing air separation in a cyclo, not in another separator, it is possible to obtain emulsions and suspensions without first mixing them This is done directly by the mill itself.

To accomplish this, the box 13 is equipped with four nozzles designed for:

1) in the manufacture of suspensions: pipe J8 for feeding solid .phase (powder); pipe 19 - for the liquid phase, pipe 20 - for output in all directions; . 2) in the manufacture of the emulsion: the pipes / 5 and 19 also serve for the supply of the dispersion medium and D | of the active phase, with the pipe 21 overlapping; .- 3,). When grinding only solids: the pipe 18 serves as a feed; pipe 21 - for air supply, pipe 19 - re. k decide.

Material entering through hole 22 in the center of the unweighted

The disk, when rotating the rotary disk, is thrown off by the centrifugal force to the periphery, advanced through the grooves between the teeth, cut off by the edges of the moving and stationary teeth and is rubbed out between their inner surfaces. In this case, the inner zone of the teeth 8 and the space between the zones, serve (with multi-zone disks) mainly for mixing.

The subsequent zones of the teeth 9 and 10 serve for grinding.

The annular grooves between the teeth are deeper than the radial ones, due to which the tops of the teeth are mutually recessed, closed channels form between them, which excludes the possibility of the material passing without processing.

The material moves along the grooves in the disk. The speed is controlled by the ring 14, and it is clear that when progress is slowed down, the material undergoes a large number of intersections and cuts between the surfaces formed by the outer and inner tangs of the prismatic teeth, which determines the degree grinding material.

The crushed material with the help of the blades 17 of the fitting 20 is removed from the apparatus for draining, separation and further processing.

Subject invention

Claims (2)

1. A colloid mill with two working discs on which, in concentric circles, there are teeth with r-adial grooves between them, which are mutually included in the annular grooves, characterized in that the annular grooves are made deeper than the radial grooves. in order to overlap the radial gaps between the teeth to prevent the penetration of the material being processed. 2. A colloid mill according to claim 1, characterized in that for adjusting the fineness of the grinder of changing the size of the outlet, the ring 14 has gaps between the discs on one of the circumference of the window / 5 and the rotary disk on the disk with possibility of under the gate for a partial overlap3. The form of colloidal decay between the teeth on the ash grass according to claim 2, distinguishes the rim of the disk. - 3- N "66819 I K idI-i-LSh J / FIG. 7 FIG. 8/4. Y (