RU2456063C1 - Flow mixer of fluids and gases - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to mixers of fluids and gases and may be used in chemical industry. Proposed mixer comprises left and right shells jointed together by thread joint with seal lock nut, and two turbines made up of vaned wheels with shafts arranged perpendicular to mixer axis at inlet and outlet.

EFFECT: simplified design, controlled quality of mixing.

4 dwg

Description

The invention relates to the field of hydraulics, can be used to obtain oncoming fluid flows in direct-flow mixers of guide vanes after entry and exit in pipe sections of chemical apparatus and technical devices.

These technical devices are capable of producing highly dispersed mixtures.

The well-known "Mixer of liquids and gases", patent No. 2333789, bull. No. 26 dated 02/20/08.

It contains a hollow torus chamber with inlet and outlet pipe.

Disadvantage: complexity in the manufacture of a torus chamber, the quality of mixing is regulated only by the pressure at the inlet.

Small-volume mixers are also known, see the book "Effective Small-Volume Mixers", Bogdanov VV et al., Ld, Chemistry, 1989. These are static, rotor-pulsation, electro-hydraulic mixers, Table 2.1, Fig. 2.1, 2.2, 2.4, 2.7, 2.8, 2.10, 2.16, 2.18, 2.20, 2.21, 2.29, 2.30-2.34.

They contain cylindrical and conical sleeves, rods, sockets for fixing the end edges, rotors, stators, teeth, blades, bushings, rods, insulators, electrode needles.

Disadvantage: many internal fillers inside the sleeves are not characterized by manufacturability.

The prototype of the invention adopted a mixer with screw elements, Fig. 2.1 and 2.4, see the book "Effective low-volume mixers", Bogdanov VV et al., L-d, Chemistry, 1989. These are static mixers, Table 2.1.

It contains a cylindrical sleeve, socket fixing end edges, screw elements.

Disadvantage. High efficiency of such mixers is doubtful.

The technical task of the invention is the preparation of high-quality emulsions with controlled mixing quality.

The technical result is achieved by the location in the end parts of the cylindrical sleeve, parasitic turbines with blades having the shape of semicircles (sectors with an angle of 180 °) in an odd amount (for example, five or seven) with an axis located in a plane perpendicular to the axis of the cylindrical sleeve. The cylindrical sleeve is divided into two parts, interconnected by a drive with the same directional thread and sealing locknuts.

The direct-flow liquid and gas mixer has a left 1 and a right sleeve 2, threaded, sealing a lock nut 3. The turbines described above are installed on the left and right parts of the mixer sleeves - left 4 and right 5. The mixed product is supplied to the left, the finished mixture is left to the right.

An example of a specific implementation. The mixed product is fed through the left 1 sleeve, passing the left 4 turbine, and it is in an unstable hydraulic equilibrium position and can acquire any direction of rotation, starts rotation in a direction convenient for it. In this case, the overpressure flow penetrates into the right sleeve 2, passing through the right turbine 5, and it is in an unstable hydraulic equilibrium position and can acquire any direction of rotation, starts rotation in a direction convenient for it. In this case, a working stream with excess pressure rushes only on one side of the axis of the turbine. Further, the stream leaves the mixer. Since the described flow occupies one half of the mixer section, the other half of the section cannot be unfilled, and it is filled with a counter flow pushed by the blades of turbines 4 and 5. The sealing lock nut 3 also serves, when it is weakened, to turn the right sleeve 2 to rotate the axis rotation of the turbine 5, respectively, of an increase or decrease in pressure losses when the angle between the planes with the mixer axis located therein — the axis of rotation of the left turbine 4 and the axis of the mixer — axis of rotation of the right turbine 5, see FIG. 4. A threaded connection is not the only device for turning the axis of the right turbine, changing the pressure loss, affecting the quality of mixing with a fixed pressure at the inlet. It can be a sliding gland.

Figure 1 shows a section of the mixer along its axis in a plane perpendicular to the axis of rotation of the turbines, with minimal pressure loss.

Figure 2 shows a section of the mixer along its axis in a plane perpendicular to the axis of rotation of the turbines, with maximum pressure loss.

Figure 3 shows a section of a turbine 4 and 5 in the plane of its axis.

Figure 4 shows the angle between the plane in which the axis of the mixer and the axis of rotation of the turbine 4 are located, and the plane in which the axis of the mixer and the axis of rotation of the turbine 5 are located: at α = 0 °, the regime of two parallel counter flows with a minimum pressure loss of a mixer; at α = 90 °, the regime of two non-parallel counterpropagating helical flows with a maximum pressure loss in the mixer is possible. The intermediate position of the sleeves 2 and 3 helps to choose the right quality of mixing.

Claims (1)

A direct-flow mixer of liquids and gases containing left and right sleeves, a threaded connection with a sealing lock nut, turbines with blades, characterized in that the turbines are in the form of impellers with their axes perpendicular to the axis of the mixer at the inlet of the flow to the mixer and the flow exit from the mixer.

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