SU1570751A1 - Emulgator - Google Patents

Abstract

The invention relates to emulsifiers and allows for greater efficiency. The emulsifier comprises a housing 1 with flow-forming devices 2 and 3 directed towards each other with a means of swirling the flow. The central channels 6 and 7 of devices 2 and 3 communicate with the coaxially mounted toroidal chamber 8 by means of an annular channel 9. The annular channel 9 is formed by two parallel planes of the ends of devices 2 and 3. The forcing device 2 is made of two parts — the fixed part 10 and the movable part - resonator 11. In the movable part, the output part of the nozzle 12 and the part 13 of the toroidal chamber are formed, forming a resonant cavity with the part 14 of the chamber located in the housing. 2 hp f-ly, 1 ill.

Description

The invention relates to devices for producing highly dispersed emulsions and can be used in mineral processing, in the chemical, metalworking, food and other industries where emulsions are used. The purpose of the invention is to increase ’the efficiency of the device.

I. The drawing shows an emulsifier, a longitudinal section.

I The emulsifier contains a housing 1 with jet-forming devices 2 and J3 directed towards each other with a means of twisting the flow in the form of tangentially arranged nozzles 4 and 5. The central channels 6 and 7 of devices 2 and 3 are in communication with the toroidal chamber 8 located coaxially with it through an annular channel 9. The annular channel 9 is formed by two parallel planes of the ends of the devices 2 and 3. The structure-forming device 2 is made of two parts - a stationary 10 and a moving one; a resonator 11. In the moving part, an output part with opla 12 and part 13 of the toroidal chamber, forming with the part 14 of the toroidal chamber located in the housing 1, a resonant cavity, which through the annular hole 15 and the drain chamber 16 is in communication with the drain pipe 17.

In the housing 1 is installed elastic. ring 18, on which the movable part rests - the resonator 11, forming a gap 19 with the stationary part 10 and the housing 1.

The emulsifier works as follows.

Through the tangentially arranged nozzles 4 · and 5, in a predetermined proportion, a coarse-dispersed mixture of components is supplied under pressure to the jet-forming devices 2 and 3 with the formation of two opposing swirling flows, which move in the opposite direction. The streams collide, move through the annular channel of the outflow 9. In this case, the components disperse due to the oncoming collision with the jet, accompanied by high-frequency oscillations and cavitation. ”The high-frequency oscillations are amplified by the resonator 11. Then the stream flows radially in the radial directions along the outflow channel 9 with an additional 5> 5 the oscillatory regime of the inlet and in the toro itself is initiated by a vortex-generating partially solid cavitation effect due to the rupture of the jets and enters the toroidal chamber 8, where additional high-frequency processing and vibrating resonator 11, and through the annular hole 15 enters the drain chamber 16, and then the output through the pipe 17.

Cavitation effects are sequentially initiated in a collision, in the annular channel at the entrance to the toroidal chamber, and in the toroidal chamber, in the resonance cavity.

Cavitation during a collision is mainly induced by micro-eddies arising from 2 colliding streams having an additional counter-swirl, each center of the microview is a source of cavitation bubbles.

Cavitation in the annular channel occurs when local rarefactions occur as a result of flow discontinuity in the trunks and simultaneous high-frequency processing by moving in the resonator.

Cavitation on the idal chamber by flow, from the collision of a rotating liquid toroid of an emulsifiable liquid and jets pumping a toroid, from the high-frequency treatment to which the liquid toroid is subjected to the surface of the resonator and vortex processes occurring in the center of the toroidal chamber - the resonant cavity.

The resonator enters into oscillation mode under the influence of the flow velocity head acting on the surface of the outlet part of the nozzle 12 in the resonator and tending to press the resonator body against the elastic support ring, counteracting the high-speed upstream flow from the central channel 7 of the jet forming device 3, local rarefaction in the zone limited by the annular surfaces channel 9, creating forces attracting the resonator to the jet forming device 3, the opposing forces of the ring of elastic material.

The operation of the resonator in the oscillation mode makes it possible to process the emulsifiable stream simultaneously in the moving part of the jet forming device, which is the resonator in the event of a collision with the opposing flows, in the annular flow channel, in the toroidal chamber, which significantly increases the duration of high-frequency processing.

The design of the jet-forming devices due to threaded connections allows you to change the size of the settlement of the annular channel of the expiration of 9 and the gap 19, which is achieved by setting the emulsifier to the optimal resonance mode and optimal hydraulic resistance depending on the viscosity of the emulsifiable fluid. The pipe 17 allows you to connect the emulsifier with a vacuum source, for example, a pump that creates a vacuum in the drain chamber, and increase the pressure drop inside the emulsifier, which allows to intensify the dispersion.

The ability to adjust the gap 19 allows you to change the amplitude of the oscillations of the resonator, which contributes to the selection of the optimal processing mode, and the vibration of one of the walls of the slot channel reduces the possibility of clogging of the slot channel, since foreign inclusions are deformed to the size of the gap by the resonator and are pushed by the stream into the toroidal chamber.

Reducing the consumption of reagents when using the proposed device is due to the possibility of increasing the processing intensity of the emulsion, increasing the degree of dispersion, which in turn increases the stability of the emulsion, and increasing the resistance

inevitably leads to reagent savings, since there is no need to produce a new emulsion.

Claims (3)

^ Claims 1. An emulsifier containing a housing with directed towards each other 1Q jet-forming devices with flow swirling means, the central channels of which are in communication with a toroidal chamber located coaxially with them through an annular channel, a drain pipe, characterized in that, in order to increase operational efficiency, the annular channel is formed by two parallel planes of the ends of the jet forming devices, one of which is made of two parts — the stationary and the moving — of the resonator, while the nozzle exit part and the toroidal chamber part, the image yuschaya with part toroidal chamber situated in the housing, a resonance cavity. 2. The emulsifier according to claim 1, wherein the resonance jq cavity is in communication with the drain pipe by means of an annular hole and a drain chamber. 3. The emulsifier according to paragraphs. 1 and 2, which is characterized by the fact that. it is equipped with a ring of elastic material - 35 la installed in the housing, while the movable part of the jet forming device forms a gap with its fixed part and with the housing and rests on the ring.