SU716575A1 - Counter-flow vortex-type gas-liquid mixer - Google Patents

Description

I

The invention relates to the field of mixing and may find application in the chemical, construction and other industries.

A vortex mixer is known, containing two liquid vortex chambers coaxially mounted on the rod with opposite spinning flow, equipped with axial make-up and outlet nozzles directed towards Drugdrug, between which the displacement chamber 1 is placed.

The disadvantages of this mixer are as follows.

A considerable part of the energy of the flows is expended on internal friction in non-mixed flows, since in the contact zone of oppositely rotating flows, friction has a retarding effect on the whole mass of these flows, due to their viscosity, which reduces the efficiency of stirring.

The mixing process is characterized by instability and instability of the equilibrium of opposing flows: during velocity pulsations, one stream for some time pushes the other stream from the exit to the mixing chamber and leaves the mixer unmixed, into the next pulsation phase it happens with another stream.

The displacement chamber is susceptible to sticking by the products of a chemical reaction of miscible liquids, for example, solutions of resins and acids that enter into a polymerization reaction.

The purpose of the present invention is to increase the intensity and efficiency of the mixing, as well as the concentrated withdrawal of the mixture and pricing.

The goal is achieved by the fact that 15 each liquid vortex chamber is equipped with a gas vortex chamber with outlet nozzles placed outside and coaxially with the outlet nozzle of liquid vortex chambers, nptfqeM direction 2c of twisting flows in each pair of vortex, bbix cameras coincide, and the displacement chamber is formed by a tee plate. with the outlet pipes of gas vortex chambers.

Disc nozzles are made of elastic material.

The mixer is equipped with a spiral volute of elastic material, installed at the outlet of the Mixed chamber. The mixer can be equipped with a cylindrical grid or annular discs mounted on the disc nozzles, on one of the surfaces of which, facing each other, are concentrically arranged grooves.

Ring discs are made of elastic material. FIG. 1 shows a mixer with a spiral volute in section; FIG. 2 shows a mixer with ring discs; FIG. 3 is a view A of FIG. one.

The mixer contains a rod 1, on which two liquid vortex chambers 2 and 3 are installed, a feeding nozzle 4 and outlet nozzles 5 and 6. Between the output nozzles 5 and 6, directed towards each other, there is a mixing chamber 7.

The mixer has a gas vortex chambers 8 and 9 with the outlet nozzles 10 and 11, placed outside and coaxial to the outlet nozzles 5 and 6 of the liquid vortex chambers. Discharge nozzles 12 and 13 are coupled to outlet nozzles 10 and 11. The direction of twisting flows in each pair of vortex chambers is the same.

A cylindrical screen 14, a spiral cochlea 15 or annular discs 16 and 17 can be mounted on the disc nozzles, i.e., at the outlet of the mixing chamber, (Fig. 2). The disk 16 has on the inner surface of the end E1 located grooves 18.

--..-- “The disc nozzles 12 and 13, the spiral cochlea 15 and the annular disks 16 and 17, are made of elastic material, for example rubber, and can be removable ..

The vortex chambers are fastened to the rod with a nut 19, and the net, spiral cochlea and annular discs on the flanges 20 and 21 of the flat nozzles 12 and 13.

The mixer works as follows.

First, the gas is supplied, for example compressed air, into the gas vortex chambers 8 and 9 and into the pipe 4. Then the liquid components are fed into the liquid vortex chambers 2 and 3 (non-simultaneous switching on is allowed). Oppositely swirled in these swirlers, the liquid flows move along the walls of the outlet nozzles 5 and 6. At the same time, the axial zone of the nozzles is filled with gas flowing through the nozzle 4. The streams in the form of cone-shaped continuous liquid film (having a small thickness) jets exit the nozzles into the gas-filled

716575

mixing chamber 7, formed by the plate nozzles, where they are

collision. Due to the small thickness and continuity of the liquid-film jets, their kinetic energy is almost completely expended on mixing.

If the flow of gas-liquid mixture must be removed from the mixer in the form of a concentrated jet, an exit spiral volute is worn on the shoulder of the dish-shaped nozzles of the mixer. In this case, it is preferable to set the resulting rotation of the gas-liquid mixture formed in the mixer.

The spin direction of the volute coincides with the direction of the resulting rotation of the gas-liquid mixture. For facilitating the cleaning of the exit of the cochlea from sticking products, it can be made elastic. and not prone to sticking, for example, from silicone rubber with a smooth inner surface.

If the gas-liquid mixture formed in the mixer needs to be turned into foam, a cylindrical mesh or annular disks pressed against one another or installed with a small adjustable gap are installed at the outlet of the mixing chamber.

The mesh is removed and cleaned with solvent or calcination. If cleaning costs more than the mesh itself, then the mesh used is replaced with a new one.

Elastic disc nozzles and ring discs are cleaned by inversion.

The counter-vortex gas-liquid mixer allows to intensify and stabilize the process of moving, while it is compact, it has a small gab {), weight and low cost compared to mixers similarly to the designation schedule. The mixer is reliable in operation and simple in service.,.

/ Invention Formula

Claims (7)

1. Counter-vortex gas-liquid 5 a mixer containing two liquid vortex chambers coaxially mounted on the rod with opposite spinning flow, equipped with axial make-up and outlet nozzles directed above each other, between which the mixing chamber is different, that, in order to increase the intensity and efficiency of mixing, each liquid vortex chamber is provided with a gas vortex chamber with outlet nozzles, 5 placed outside and coaxially to the outlet nozzles of the liquid vortex chambers, the flow swirling direction in each pair of vortex chambers coincides, and the mixing chamber is formed by dish-shaped nozzles adjacent to the outlet nozzles of the gas vortex chambers. 2. A mixer according to claim 1, wherein that the disc caps are made of asthmatic material. 3. A mixer according to claim 1, characterized in that, in order to concentrate the mixture, it is provided with a spiral volute mounted at the outlet of the mixing chamber. 4. Mixer on the PP. , 1M (; 1) The fact that the spiral snail is made of elastic material. 5. A mixer according to claim 1, characterized in that, for the purpose of pricing, it is provided 6 the cylindrical grid installed on dish-shaped nozzles. 6. A mixer according to claim 1, characterized in that, for the purpose of foaming, it is equipped annular discs mounted on the plate nozzles, on one of the surfaces of which, facing each other, are concentrically arranged grooves. 7. A mixer according to claim 1, b, characterized in that the annular disks are made of elastic material. Sources of information taken into account in the examination 1. US patent number 3261593, cl. 259-4 1963. J5 // / J v-tr-. .. .- 716575 2 1TP J7p