SU997771A1 - Apparatus for containing media - Google Patents

Description

The invention relates to the enrichment of minerals and can be used in the chemical, coal, metallurgical and other sectors of the national economy, as well as in the processes of cleaning industrial and municipal waste water.

A mixer is known, consisting of a vertical cylindrical-conical body, a supply nozzle and a nozzle for the finished product. In the upper part of the housing there is a central tube fitted with a radial distributor, and an overflow connection with a serrated edge, which serves to distribute one of the reagents. In this apparatus, the formation of a thin surface layer of liquid is carried out from the annular bath through the serrated edge of the cylinder f.l.

Way The formation of a thin wall layer of the flowing liquid has significant drawbacks in that, with a slight increase in the thickness of the overflow layer, the flow of liquid from the vessel walls can be separated, and a uniform overflow of the fluid throughout the serrated threshold is possible only with a stilling device.

which complicates the design of the device, and the strictly horizontal position of the gear threshold.

Also known is an apparatus for contacting media, comprising a cylindrical body with a conical bottom, a tangential nozzle for supplying ONE medium, coupled with a screw insert placed on the inner

10 of the surface of the housing, a pipe for supplying a second medium, equipped with a radial distributor L2.

In the known device, it is difficult to achieve high quality stirring due to insufficiently uniform distribution of media.

The aim of the invention is to increase the mixing quality by uniform distribution of the media.

20

This goal is achieved by the fact that in the apparatus for the contacting of media, containing a cylindrical body with a conical bottom, a tangential nozzle for supplying

Claims (2)

25 ONE medium, mated with a screw insert placed on the inner surface of the housing, the nozzle for supplying another medium, equipped with a radiator, spout, screw insert30 is crescent-shaped, and the sprayer is placed under the tangential nozzle. One of the reagents is fed into the apparatus through the openings of a tangentially located supply nozzle and, in addition to the longitudinal one, makes a rotational motion in the mixer. In this case, the intensity of mixing (mass transfer) increases by a factor of 2-3. An annular sickle is installed on the side walls in order to create a uniform film of liquid. : insert screw type, grich beginning of the insert is aligned with the lower edge of the hole of the supply pipe. The purpose of the insert is to create the same thickness of the liquid film on the side walls (without the insert, the reagent will flow in the form of a narrow strip) The sickle-shaped form of the insert is selected. In order for the liquid to flow through the insert edge under the force of gravity (the insert width is less than the reagent flow moving along it), the layer is relatively constant in thickness, which ensures a uniform thickness of the moving component at any point on the inner surface of the cylindrical part of the apparatus . In the center of the apparatus, a central is mounted on a tube with a radial distributor, by means of which the reagent is uniformly applied to the surface of the moving suspension and mixed with it. The radial diffuser is installed under the tangential nozzle so that the reagent falls into the region of the stabilized hydrodynamic flow, where the shear stresses are small. In order to increase the productivity of the apparatus, the tangential nozzle is supplied to the mixer at a small angle to the horizontal, which creates considerable longitudinal speeds at the entrance. Increasing the angle can increase productivity while maintaining film thickness and mixing conditions. The screw insert is installed in the machine at the same angle as the tangential nozzle. FIG. 1 shows an apparatus, a general view, a longitudinal section f in FIG. 2 shows section A-A in FIG. 1. The apparatus consists of a vertical cylindrical body 1 with a conical bottom placed on the inner surface of the body of the screw insert 2, a tangential nozzle for supplying one medium 3 with an outlet 4, a nozzle 5 for supplying the second medium with a radial sprayer 6 and a nozzle 7 for outputting the finished product. The device works as follows. The initial suspension is continuously through the slit 4 of the nozzle 3 enters the inner surface of the housing 1 and the sickle-shaped insert 2. The reagent (flocculating nt) is also continuously through the nozzle 5 using the radial diffuser 6 enters the moving layer of the slurry stream and mixes with the latter. The mixing product is removed from the mixer by gravity through the nozzle 7. Due to the small thickness of the slurry layer and the even flow of the reagent onto its surface, the surface of contact of the media increases, hence, the mixing process proceeds more quickly and with higher quality. Experimental studies have shown high efficiency of mixing flocculus with pulp, which made it possible to reduce flocculon consumption as compared to the existing structures by 30–40%. Claims An apparatus for contacting media, mainly for mixing fluids, comprising a cylindrical body with a conical bottom, a tangential nozzle for supplying one medium, coupled with a screw insert placed on the inner surface of the body, a nozzle for supplying another medium, provided with a radial one. a spray gun, characterized in that, in order to improve the quality of re-shaking by uniform distribution of media, the screw insert is made of a crescent-shaped shape, while the spray gun is placed under the tangential nozzle. Sources of information attributed to the examination in the examination 1. Switzerland Patent No. 549405, cl. B 01 F 3/12, 19-74. 2. USSR author's certificate number 345937, cl. On 01 d 47/06, 1969.