SU447498A1 - Bead mill - Google Patents

Description

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The invention relates to bead filler, used for grinding solid faun of various suspensions.

A bead mill is known, which includes a mill with grinding chamber, working bodies, a rotating agitator, made in the form of a shaft with concentrically placed discs.

In the well-known bead mills, the discs are flat and equipped with spokes, holes or cams.

However, the used discs do not provide an even distribution of working fluids over the height of the grinding chamber during operation. The accumulation of working fluids in the lower part of the grinding chamber ELI; their removal to the filter leads to a decline in performance and in some cases necessitates an emergency stop.

The purpose of the invention is to improve the reliability of the bead mill and to ensure uniform distribution of working fluids.

This is achieved by the fact that the lower discs are made in the form of a truncated (conical cones, facing downwards with a smaller base, and the rate is reduced by the conicity of the discs from top to bottom.

The drawing shows the proposed device, the cut.

Bead mill contains. The casing 1 is fixed inside the cylindrical grinding chamber 2. The bream with the walls of the grinding stone and the casing forms a gap along which the MU is pressurized with an ohlachap liquid.

The housing has an opening for entering the solution located at the bottom and a drain hole at the top. A nozzle 3 is installed in front of the drain hole, na6 J

priivr mesh

Inside the mixing chamber, a rotating rotary mixer with a vertical shaft 4 passing through the cover 5 of the housing 1 is mixed.

The fifa shaft 4 is concentrically fixed disks 6, made in the form of truncated cones, facing down the smaller base.

To disperse the clay solutions, the bead mill is made with discs 6 having different taper values, with smaller taper wheels having nicknames.

Some discs mounted on shaft 4 may have a different shape, for example, disc 7 is flat, upper disc 8 has a tapered surface, but with its smaller base facing up.

The bottom of the discs 6 may have radial ribs 9, which serve to accelerate the working bodies at the moment of launch.

A feature of the proposed bead mill is that with the conical shape of the discs 6, the contact pressure of Me with the surface of the disks and the surfaces of working bodies moving under the action of centrifugal forces increases. The load on the working bodies increases gradually, and therefore their destruction and wear is reduced.

The trajectory of movement of the working bodies after they slide off the edge of the disk 6 is directed at an angle to the horizontal plane, and the value of the vertical component depends on the taper of the disks.

After the wall is fixed, the working bodies bounce upward at the same angle and return to the surface of the same disk.

 low speed pumping; Neither the solution or the initial viscosity nesting the vertical component of the speed of the working bodies ensures their suspension in the suspended state and uniform distribution over the height of the grinding chamber.

With continuous dispersion of clay-type solutions, their viscosity increases dramatically as they move upwards, but the carrying-out of working fluids is prevented by a decrease in the vertical component of the growth rate, since the discs located above increase the co-activity.

Upper disk 8 mounted on a smaller base. discards the distribution body, preventing the flow of working fluids into the filter zone and its clogging.

With a GDP of a bead mill, most of the working bodies settle in the funnels formed by the cov ered surfaces of the disks 6,. which reduces the possibility of seizure of the shaft at startup.

. PR | ЩЩ ЙЗОВРДГГШЩ. .

 1. Bead a-me, including Kopqsrc with grinding chamber, working bodies, rotating agitator;

performed - in the drive shaft with a cleverly razmatschy “and discs, Oh Ta I Ch A Yu S Y A A S C I with the fact that, in order to improve the reliability of its work, the lower disks are made in

the shape of a truncated cone, obrschennyh smaller fundamentals anizd down. “. 2. Mill according to claim 1, O TL ICH AYUSCHAS, so that, for the purpose of uniform distribution

snee bodies, the taper of the disc is reduced QBQpXy down.

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