SU914077A1 - Apparatus for ajitating liquids - Google Patents

Description

The invention relates to mechanical and chemical mixing devices and can be used in food, chemical, petrochemical and other related fields of industry, as well as in devices for studying the equilibrium between liquid and vapor, where highly efficient mixing of multicomponent systems is required.

A device for mixing liquids is known, consisting of a reservoir and a rotating vertical shaft located in the center, on which horizontal plates are fixed for mixing liquid mixtures (11.

However, the device is cumbersome, inconvenient in operation and requires significant electricity.

The closest to the proposed technical essence is a device for mixing the liquid, containing a reservoir for the liquid, installed in it a vertical hollow shaft, in the lower part of which a radially bent in a horizontal plane radially fixed

ki, and at the top there is an overflow tube, the end of which is located below the mark of filling the tank with liquid, and the drive for rotating the shaft (2).

A disadvantage of the known device is that during rotation of the mixing device, provided in the upper part of one overflow tube, there is an additional hydraulic resistance, as well as centrifugal force, which displaces the axis of rotation of the shaft, thereby increasing the power consumption for mixing.

The purpose of the invention is the intensification of the mixing process.

This goal is achieved by the fact that a device for mixing liquid, containing a reservoir for liquid network, a vertical hollow shaft mounted in it, in the lower part of which the branch pipes bent in a horizontal plane are radially fixed, and the overflow pipe is installed in the upper part, the end of which is located below the mark of filling the tank with liquid , and the drive for rotating the shaft, is provided with an additional

3 9140 '

overflow tube, with the tubes arranged symmetrically, and their ends are bent in a horizontal plane opposite to the direction of bending of the nozzles.

FIG. 1 shows a device for mixing liquids, for example, in devices for studying phase equilibrium; in fig. 2 - a device for studying the equilibrium between liquid and vapor with a mixing device, a general view; in fig. 3 is a section A-A in FIG. one; in fig. 4 - section B — B in FIG. one; in fig. 5 shows section B — B in FIG. one.

A device for mixing liquids consists of a cube (tank) 1, a hollow shaft 2 vertically disposed therein, in the upper part of which it is symmetrical, i.e. overflow tubes 3 are diametrically opposed, and metal inserts 4 are mounted in the lower part and the nozzles (blades) 5 curved in the horizontal plane are radially fixed.

The device for the study of the equilibrium between liquid and vapor is made of glass.

Depending on the application (in industrial installations or laboratory instruments), the mixing device is supplied with an individual drive (electric motor) or a magnetic stirrer and metal inserts, which set in motion the mixing device. The ends of the overflow tubes are located below the mark of filling the reservoir with liquid and are bent in a horizontal plane opposite to the direction of the bend of the nozzles.

The mixing device is installed on a support 6.

The operation of the device is as follows.

A mixture of known composition is poured into the cube 1 and includes a mixing device that provides intensive mixing of the liquid both in the horizontal and in the vertical plane. Nozzles (blades)

5, located at an equal distance from each other and made in the form of radially bent nozzles, the cavity of which communicates with the cavity of the shaft 2 of the mixing device, form a common circulation line. During the rotation of the mixing device, the liquid enters the nozzles and rises along the circulation line.

In the upper part of the mixing device, two overflow tubes 3 are diametrically opposed, along which the liquid is poured during its movement in the vertical plane. The ends of the overflow tubes 3 are located below the level of the liquid, thereby eliminating the formation of spatter that

four

very important in laboratory studies. The symmetrical arrangement of the overflow tubes contributes to the balancing of the centrifugal forces and the proper centering of the mixing device. Rotating together with the shaft of the mixing device, the overflow tubes 3, similarly to the blades 5, simultaneously mix the liquid in the cube, but at the same time exert an additional load on the shaft 2 of the mixing device.

To reduce the power required for mixing, while simultaneously intensifying the process, the ends of the overflow tubes 3 are bent in a horizontal plane opposite to the direction of rotation of the shaft 2 of the mixing device, i.e. opposite the direction of bending of the nozzles 5.

As a result of the outflow of fluid from the overflow pipes 3, a force is formed in the form of a jet reaction. Thus, the overflow tubes and the agitator shaft rigidly connected with them are additionally rotated under the reactive action of the outflowing fluid, informing them of additional acceleration, which helps the agitator to rotate in a given direction. Moreover, the support 6 of the mixing device (used in laboratory instruments 30) is made of diamond having a minimal coefficient of friction and which is neutral with respect to the medium being studied, in the form of straight cone with a well polished surface ₃₅ that minimizes the friction.

Thus, the proposed device allows to intensify the mixing process with low energy consumption, which ₄₀ ultimately improves the accuracy of laboratory determinations and allows to increase the yield of a quality product in an industrial environment.

Claims (1)

Claim ⁴⁵ A device for mixing liquids, containing a reservoir for liquids, a vertical hollow shaft mounted therein, in the lower part of which bent in a horizontal plane are radially fixed ⁵⁰ pipes and an overflow pipe installed at the top, the end of which is located below the mark of filling the tank with liquid, and a drive for dyeing the shaft, characterized in that, in order to intensify the mixing process, it is equipped with an additional overflow pipe, and the pipes are symmetrically the ends are curved horizontally five opposite to the bending of the nozzles.