RU2550609C1 - Mixing-activating device for liquid media - Google Patents

Abstract

FIELD: mining operations.

SUBSTANCE: mixing-activating device for liquid media comprises a working chamber, nozzles, confusers, a partition with concentric profiled holes, reflectors which are spring-loaded in the working chamber, the confusers are located in the ejection chambers, at the output end of which a partition is located in the form of a rotating disk interconnected with the electric motor. The walls of the ejection chambers are provided with windows connected to the loading hopper.

EFFECT: increase in efficiency of activation of the liquid mixture by increasing the intensity of exposure to the mixture.

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Description

The invention relates to the mining industry, namely to mixing and additional dispersion of two-phase liquid media requiring uniform mixing, for example filling mixtures, during their transportation through the pipeline to the place of laying.

Known hydrodynamic generator for processing suspensions (RF patent for the invention No. 2169625 C1 (B06B 1/18, F15B 21/12), author Freidin AM, Shalaurov VA, Anushenkov AN, publ. 06/27/2001 )

The proposed generator is intended for the treatment of liquid media, for example, hardening filling mixtures or water-coal suspensions. The generator housing contains a nozzle, a reflector in the form of a hole, and resonating plates, the natural frequency of which is tuned to the natural frequency of the jet of the processed fluid. Oscillations of the resonating plates lead to activation of the treated stream.

The disadvantage of this device is the difficulty of adjusting the resonance of the oscillations of the plates, which requires changing the length or thickness of the resonating plates. In addition, the design of the generator does not allow mixing of the individual components of the suspensions.

The closest in technical essence and combination of essential features is the RF patent No. 2301112 C1 (B02C 19/18) adopted as a prototype. The method of grinding minerals and cavitation dispersant for its implementation, ed. Anushenkov A.N., Freidin A.M., Voroshilov P.Yu., Uskov V.A., Artemenko Yu.V., publ. 06/20/2007

A device for grinding minerals includes a disperser made straight-through and consisting of a hollow rotor with blades on the inner surface and installed from the opposite end of the inlet pipe of the rotor end perpendicular to the axis of rotation of the rotor by a partition with holes, and from the stator made from the end adjacent to the cavitation chamber, with a partition having holes compatible with the holes of the rotor when the latter rotates. The destruction of minerals is carried out by the resonant effect of hydroshock and cavitation pulses.

The disadvantages of this device are the structural complexity due to the presence of a separate repulpator for mixing the components, as well as the complexity of the drive associated with the use of a variator or a special built-in electric drive.

The objective of the invention is to increase the efficiency of activation of a liquid mixture by increasing the intensity of exposure to the mixture.

This is achieved by the fact that the mixing-activating device for liquid media, including a working chamber, nozzles, confusers, a partition with concentric profiled holes, reflectors in the working chamber are spring loaded, confusers are located in ejection chambers, at the output ends of which there is a partition in the form of a rotating disk, interconnected with the electric motor, while the walls of the ejection chambers are provided with windows connected to the loading hopper.

A rotating partition in the form of a disk with concentric shaped holes periodically blocking the flow of the mixture ensures its pulsation with an ultrasonic frequency and the propagation of the generated waves in the volume of the mixture located in the working chamber. This leads to an increase in the local velocity of the flow, which upon its further collision with reflectors vibrating from the pulsations of the mixture flow increases the intensity of the mechanical effect on the mixture.

The presence of ejection chambers and a loading hopper also provides the ability to effectively mix the components of liquid media.

The device is illustrated in figures 1-3.

The mixing-activating device (Fig. 1) contains a cylindrical body of the working chamber 1, walls 2 and 3. On the front wall 2, two ejection chambers 4 are cantilevered, inside of which there are ejection nozzles 5, confusers 6, inlet pipes 7. On the walls of the ejection Chambers 4 have side windows 8 connected to the loading hopper 9. At the end of the ejection chambers there is a rotating partition in the form of a disk 10 with profiled concentric holes 11 mounted on a shaft supported by a bearing 12 protected against liquid and the seal 13, and driven in rotation by a motor 14. Instead of narrowing channels nozzles 15 mounted reflectors 16, supported by a spring 17. The rear wall has an opening for diverting a mixture of 18 and outlet 19.

Mixing-activating device operates as follows. The liquid phase of the mixture under pressure is supplied to the inlet nozzles 7 (figure 1). At the same time, a solid dispersed phase is fed into the hopper 9. By increasing the flow rate in the ejection nozzles 5 when the flow enters the confusers 6, a vacuum is created inside them and the solid phase from the hopper 9 through the windows 8 in the wall of the ejection chamber 4 enters the stream and mixes with the liquid phase. The resulting mixture enters the narrowing channels 15, and then, at the moment of coincidence of the channels 15 with the profiled holes 11 on the rotating partition 10, the mixture enters the working chamber, hitting the hemispherical reflectors 16, vibrating on the springs 17, due to the pulsation of the mixture flow. The electric motor 14 rotates the partition 10 with the frequency necessary to create ultrasonic flow pulsations.

The result is a complex mechanical effect on the particles of the mixture. A concentrated pulsating cavitation region is formed between the profiled holes 11 and the reflectors 16. The pulsations of the cavitation region create variable fields of velocities and pressures, which contributes to an additional hydrodynamic effect on the mixture, accompanied by its activation. The collision of the particles of the mixture with vibrating reflectors 16 causes their destruction, grinding, intensive mixing and increasing the uniformity of the composition of the mixture.

The proposed mixing-activating device provides the ability to mix the components of liquid mixtures and improves the efficiency of activation of the liquid mixture by increasing the intensity of exposure to the mixture in comparison with the prototype.

Claims (1)

Mixing and activating device for liquid media, including a working chamber, nozzles, confusers, a partition with concentric profiled holes, reflectors, characterized in that the reflectors in the working chamber are spring loaded, confusers are located in ejection chambers, at the output ends of which there is a partition in the form of a rotating disk , interconnected with an electric motor, while the walls of the ejection chambers are equipped with windows connected to the loading hopper.

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