RU1773469C - Rotary apparatus - Google Patents

Abstract

Usage: treatment of liquid media. SUMMARY OF THE INVENTION: A rotary apparatus comprises inlet and outlet nozzles, a rotor and a stator with a narrowing annular channel of constant width. The stator is made in the form of a cone. Spiral protrusions are made on the outer surface of the cone in increments decreasing toward the apex of the cone. A tapering annular channel is formed between the outer surface of the stator and the inner surface of the housing. Spiral grooves are made on the inner surface of the housing with a pitch decreasing towards the narrowing and equal to the pitch of the stator protrusions. 1 ill.

Description

The invention relates to devices for intensive processing of liquid media and can be used in chemical, oil, engineering, biological and other industries for carrying out and intensifying various physicochemical, biological and heat and mass transfer processes in liquid-liquid systems.

The closest to the proposed invention in terms of technical nature and the effect achieved is a device for physicochemical processing of the medium, comprising a housing with a cover, mounted in the housing and having stator openings on the working surfaces and a hollow rotor mounted on a shaft with a screw, a conical annular channel formed by the working surfaces of the stator and cover, as well as a nozzle for draining the medium, made in the form of a Laval nozzle and an inlet nozzle. The disadvantages of this device include the short processing time of the medium in the device and the low turbulization of the flow.

The purpose of the invention is the intensification of the processes of emulsification and heat and mass transfer.

This goal is achieved in that in a rotary apparatus containing a housing with nozzles for supplying and discharging the medium to be treated, inside which a rotor and a stator are arranged, made in the form of a cone, on the outer surface of which there are special protrusions with a step decreasing towards the top of the cone, tapering annular a channel formed by the outer surface of the stator and the inner surface of the housing on which the spiral grooves are made with a pitch decreasing towards the narrowing and equal to the pitch of the stator protrusions.

In the analysis of known technical solutions, no solutions were found having features similar to the totality of the distinguishing features of the present invention.

Based on the analysis, we can conclude that the claimed tech-VI

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The drawing shows a rotary apparatus,

The rotary apparatus comprises a housing 1 with a nozzle for supplying 2 and outlet 3 of the medium, a rotor 4 with channels 5 and a stator 6 with channels 7 coaxially located in it

On the inner cone of the annular tapering channel 8, spiral projections 9 are made, the pitch of which decreases towards the apex of the cone, and on the outer cone of the annular tapering channel 8, grooves 10 are identical to the spiral protrusions 9.

The rotary apparatus operates as follows. The medium to be processed under pressure enters through the inlet pipe 2, passes through the channels of the rotor 5, the channels of the stator 7, the tapering annular channel 8 and is removed from the apparatus through the output pipe 3. When the rotor 4 rotates, the channels of the rotor 5 periodically overlap and coincide with the channels of the stator 7. As a result, pulsations of pressure and flow velocity are generated in the medium being processed, which initiate acoustic and hydrodynamic cavitation. Spiral projections 9 and spiral grooves 10 contribute to turbulence of the medium . The spedula to the law of conservation of energy, the fluid tends to pass the conical ring rocked along the smallest path. However, this is prevented by spiral winding, which leads to an increase in shear forces in the flow, disruption of the vortices during flow around the upper part of the flow of the spiral winding medium and its turbulization.

In addition to increasing the flow rate, due to a decrease in the cross section of the conical annular channel 8, the flow rate also increases due to a decrease in the pitch of the spiral protrusions 9, since the distance between adjacent coils decreases as the diameter of the cone decreases.

With an increase in the flow velocity, its turbulization increases, which intensifies the heat transfer process of the walls of the narrowing annular channel 8.

It is known that with an increase in the flow velocity, the pressure in it decreases, and an increase in the pressure drop favorably affects the development of cavitation, both acoustic and hydrodynamic.

A swirling, vortex-like flow breaks out of the annular tapering channel 8 and is sprayed in the outlet pipe 3. In practice, the outlet portion of the tapering annular channel 8 works like a nozzle due to the strong vortex of the flow

and disruption from sharp edges. In addition, when disengaging from sharp edges and with a sharp change in the flow area, intense hydrodynamic cavitation develops in the outlet pipe 3. Total drop

static pressure by increasing the path traveled by the fluid flow and its turbulization, as already noted in the prototype, after exposure to an acoustic field, contributes to the efficiency of the cavitation process. The resulting cavitation bubbles are discharged into the outlet pipe 3 and collapse there, since the passage section of the pipe 3 is larger than the passage section of the output part of the tapered annular channel 8, as a result of which the flow rate drops and the pressure in the outlet pipe 3 increases.

Turbulization of the flow and intense acoustic and hydrodynamic cavitation significantly intensify the processes of mass transfer and emulsification. Cavitation bubbles during coagulation and pulsations, as well as turbulent pulsations of velocity, contribute to a decrease in the diffusion layer and develop a phase contact surface when mass transfer processes occur. When emulsifying immiscible liquids, small-scale pulsations

Velocities and pressures with developed cavitation and flow turbulence open droplets from the dispersible liquid, contribute to their crushing and uniform distribution throughout the volume.

Claims (1)

The claims A rotor apparatus comprising a housing with nozzles for supplying and discharging a process medium inside of which a rotor and a stator with a tapered annular are placed constant width chaial, characterized in that, in order to intensify the processes of emulsification and heat and mass transfer, the stator is made in the form of a cone on the outer surface of which spiral projections with a step decreasing towards the apex of the cone, and a tapering annular channel is formed between the outer surface of the stator and the inner surface of the housing, on which spiral grooves are made with a step decreasing towards the narrowing and equal to the step of the stator protrusions.