SU1590124A1 - Apparatus for producing fine-dispersed system - Google Patents

Abstract

This invention relates to mixing, emulsifying, homogenizing and dispersing both liquid and solid substances. The use of the device allows to increase the degree of dispersion of the mixture while increasing productivity. From the mixing circuit, the liquid enters the pump. Through the inlet pipe, fluid is supplied to a pressure pulse generator. The retaining cavitating swirler, made in the form of, for example, a fixed impeller, carries out a flow spin. The centrifugal force in the mixture separates the coarse fraction in the separation unit. A portion of the mixture is sent for re-treatment, and a portion is discharged from the device. The required flow ratio is controlled by valves. 2 Il.

Description

The invention relates to mixing, emulsifying, homogenizing and dispersing both liquid and solid substances and can be used in the chemical, food, mining industry.

The aim of the invention is to increase the degree of dispersion of the mixture and the performance of the installation.

FIG. 1 shows a schematic of the proposed device; in fig. 2 is the same option.

The device contains a mixing circuit 1, a pump 2, an inlet pipe 3, behind which a pressure pulse generator 4 is installed, the output pipe 5 of which contains a porn cavitating swirler 6, made, for example, in the form of a fixed impeller, and connected to a separation unit 7, having discharge pipes 8 and 9 with adjusting valves 10 and P. In this case, the coarse fraction pipe (9 in Figs. and 8 in Fig. 2) is connected to the inlet of pump 2.

The device works as follows.

From the mixing circuit 1, a liquid with the required composition of the components enters the pump 2, from which, via the inlet pipe 3, under pressure Pp, 4 pressure pulses are supplied to the generator. In this case, in the critical part of the generator, the flow rate increases, and the pressure decreases, as a result of which a cavitational flow regime occurs.

cl

with

tsD

one

In the diffuser part of the generator, the cavitation cavity (supercattern) grows iodically and, having reached the defined value, opens, drifts down and collapses in the area of high pressures. At the same time, pressure pulses are created in the output pipe 5, under the influence of which the mixed, cavitational-cumulative grinding, dispersion, homogenization, emulsification, i occur. These processes proceed not only from the collapse region of the supercaverns pressure P over the entire path of dispersible components in the pipeline 5 from the generator f of the suppressor cavitating zazikhriel 6.

 The suppressor cavitating swirler (| provides a constant and optimal pressure ratio in the outlet pipe P, to the pressure Rd, the generator's operating mode depends on it. The ratio of the pressure PI / P depends on the ratio of the cross section of the cross section to the swirl F1 to the area Criteria of the ecologic section: Generator number F p, Limits: 1 Generator runs provide an 1 to 1 ratio, 1, 2, 6, Since the magnitude of the pressure P reaches 70% of the pressure P, the potential energy of the fluid flow s. is h Therefore, supporting the element performs the conversion of the potential energy of the flow / force into the energy of the cavitational effect of the dispersive effect on the dispersion of tMbie 11; s.

In addition, a reversing canister, a windrower, executed in the form of, for example, a fixed impeller, a multiple-feed screw, and so on, also carries out a flow swirl, which allows the coarse fractions to be separated by centrifugation. In this case, there are two possible options for the execution of a node for the separation of coarse fractions (Figures 1 and 2). When a dispersible component has a specific gravity, Eyshe, than the average specific flux density (fig., Y, its larger parts move to the near-wall region of the outlet pipeline and then flow through conduit 9 through the veins).

.. c, n

5 f.

0

244

Til to the entrance to the pump 2 for re-processing. Otherwise (Figure 2), i.e. when the dispersible component has a specific gravity below the flow density, the coarse dispersed fraction is transferred to the flow axis and through valve 10 through line 8 is fed to the inlet of pump 2 for reprocessing.

The change in the ratio of the volumes of coarse and fine fractions separated in node 7 and, consequently, the degree of dispersion of the resulting emulsion, is carried out by adjusting valves 10 and 1 installed on the discharge lines 8 and 9.

Proceeding from the working conditions, the proposed device can realize the following cases of a slave (figure 1)

The resulting emulsion, suspension, mixture, etc. in the whole volume satisfies the specified requirements in terms of the degree of dispersion. In this case, the valve 11 is closed and the finished product is discharged through the pipeline 8.

The degree of dispersion of the resulting product does not match the specified. In this case, the valve 10 is closed and the entire volume of the dispersible components through the valve 11 through the pipeline 9 is returned for reprocessing.

Part of the flow components did not reach the required degree of dispersion. Adjusting valves 10 and 11 establish such a cost ratio through the discharge pipes 8 and 9, in which the entire fraction, having a dispersion that does not correspond to the required one, is separated and sent for reprocessing.

Similarly, the same cases are realized when the device is executed according to the scheme shown in Fig.2.

The use of the proposed device in various industrial sectors, for example, food, chemical, mining, allows to obtain high-quality suspensions, emulsions and others, increase productivity and reduce energy costs, while the design of the device is simple to manufacture, which gives an economic effect. The invention includes a device for producing fine-dispersed systems, comprising inlet, outlet and discharge pipelines.

15901

a separation unit and a pressure pulse generator, installed downstream of the pump, characterized in that, in order to increase the degree of dispersion of the mixture and the performance of the plant, the pressure pulse generator has the shape of a Venturi tube, the output

the pipeline is provided with a retaining cavity hose with a swirler, filled, for example, in the form of a fixed impeller and installed behind a pressure pulse generator, and the discharge pipelines are equipped with control valves.

1

ten

2

Claims (1)

Claim A device for producing fine systems containing inlet, outlet and outlet pipelines, 1590124 separation unit and a pressure pulse generator installed behind the pump, characterized in that, in order to increase the degree of dispersion of the mixture and the performance of the installation, the pressure pulse generator has the form of a venturi, output. the pipeline is equipped with a retaining-cavitating swirl made, for example, in the form of a fixed impeller and installed behind the pressure pulse generator, and the outlet pipelines are equipped with control valves.