SU1128972A1 - Apparatus for mixing liquid heterogeneous media - Google Patents

Description

. 2, The apparatus according to claim 1, distinguishes u and with the fact that the curved end

each plate is set at an angle of 5-15 to the axis of symmetry of the mixer.

one

The invention relates to chemical engineering and can be used in engineering when stirring a liquid is used to intensify the process.

A mixer is known, comprising a housing, an agitator and baffles in the vvde of hollow tubes of a segmented section with the ends bent into a side of an organ, located above the axis of symmetry of the agitator and beneath L 1J-.

However, the use of hollow tubes in the quality of reflective walls can lead to their blockage. The coefficient of resistance to flow around the tubes is 60% of the resistance coefficient of flat plates, as a result, to maintain the same degree of mixing, the dimensions of the tubes compared to the dimensions of flat plates must be increased, which increases the intensity of the apparatus, the arrangement of hollow tubes above eliminates the difference in mixing in these zones.

A device for mixing liquid inhomogeneous media is known, comprising a housing with a stirrer rotating around a vertical axis and reflective vertical partitions mounted on the walls of the housing along their entire length C2.

However, in the known apparatus, there are two circulation circuits above the axis of symmetry and below it, which increases the mixing time in the lower circuit by 20-30% compared to the mixing time in the upper circulation loop.

The purpose of the invention is to increase the intensity and productivity of mixing.

This goal is achieved by those in the apparatus for mixing liquid inhomogeneous media containing 2- - ..

housing with a broom, rotating around a vertical axis, and reflective walls mounted on the walls of the housing throughout

length, reflective partitions

provided with guide elements

made in the form of plates, alone

the ends of which are rigidly fixed on

partitions in alternate order

under and above the mixer, while others are bent in the direction opposite to the direction of rotation of the mixer, and placed respectively above and below the mixer,

In addition, the curved end of each plate is set at an angle of 5-15 to the axis of symmetry of the mixer.

Fig, 1 shows the proposed apparatus, a general view, longitudinal section, cut; FIG. 2 is a section A-A in FIG. 2; FIG. 3 is a view B in FIG. 2; FIG. 4, view B in FIG. 2; Fig, 5 - scan body.

An apparatus for mixing liquid media consists of a housing 1, a top 2 closed on which there is an actuator (not shown), which rotates the shaft 3 with an agitator 4 mounted on it, and reflective ones are fixed on the 0 body of the apparatus. : partitions 5, to which the guide elements in the form of plates 6, the other ends of which are bent to the side, are attached under the mixer at one end. opposite to the direction of rotation of the agitator, and the guiding elements in the form of plates 7, which at one end are attached to the partition above the agitator, Epastina forms 0 with an axis of symmetry of the agitator varying from 1 to 5 °,

One of the embodiments of the reflective partitions is shown in FIG. 5. Unlike partitions, 5 are represented in FIGS. 3 and 4, reflective partitions are made in the form of flat plates, directly passing into the guide element 3

ment - plate 6 go to the guide element - plate 7.

The device works as follows.

When the stirrer 4 rotates, the fluid in the body of the apparatus acquires a rotational motion and flows onto the baffles 5, which convert the rotational motion of the medium being mixed into axial. At the same time, the fluid located under the axis of rotation of the stirrer flows onto the plates 6. from the lower zone of the apparatus to the upper. Similarly, the fluid located above the axis of rotation of the stirrer flows onto the plates 7 and, in its axial movement, passes from the upper zone of the apparatus to the lower. Due to this movement, there is an intensive mass exchange between the upper and lower parts of the apparatus, increasing (-A

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The intensity of mixing and, as a result, the time to achieve a given degree of heterogeneity is reduced, thereby increasing the productivity of the apparatus. The installation angle of the guide elements - plates 6 and 7 is chosen optimal on the basis of theoretical data ranging from 5 to 1 3, which ensures optimal conditions for the flow on the plate, which, in turn, allows, at the same mixing intensity, to reduce energy consumption for maintaining process.

The use of the proposed apparatus design allows one to reduce the mixing time by 15–20%, to increase the productivity of the apparatus by 5–10% and to reduce its metal consumption by 1.5–2%.

Claims (2)

, 1. APPARATUS FOR MIXING ¹ LIQUID LIQUID INHOMOGENEOUS MEDIA, comprising a housing with a stirrer rotating around a vertical axis and reflective partitions; mounted on the walls of the body along their entire length, characterized in that, in order to increase the intensity and productivity of mixing, the reflective partitions are provided with guide elements made in the form of plates, one ends of which are rigidly fixed to the partitions in an alternating order under and above the mixer, and others - bent to the side opposite to the direction of rotation of the mixer, and placed respectively above and below the mixer. . 2. The apparatus pop. 1, distinguished by the fact that the curved end of each plate is set at an angle of 5-15 ° to the axis of symmetry of the mixer.