UA30442U - Ultrasonic mixer-activator - Google Patents

Abstract

An ultrasonic mixer-activator contains a container with a cover and a bottom vertically installed on the shock absorbers, which is equipped with locking-distributing valves, a membrane with magnetostrictive transducer of ultrasonic oscillations and a concentrator of ultrasonic waves, its cylindrical container consisting of upper section with cover equipped with central inlet duct with plug cock, and lower section with bottom equipped with central outlet duct with plug cock, between which by means of sealing and shock-absorbing ring gaskets is horizontally installed washer-shaped membrane with openings between internal wall of section and rigidly and centrally fastened to it from the upper side by cylinder, to inside of which and end of the membrane upper annular concentrator with central opening is rigidly fastened, which cross section has a shape of a trapezoid.

Description

Description of the invention

The utility model refers to the field of construction, food and chemical engineering, in particular to installations for 2 dispersing and mixing of mineral substances.

A well-known device for activating cement, holding a frame with vibrators installed on the base with the help of shock absorbers, a hermetic container with a pipeline with a hydrodynamic radiator placed in it, nozzles for the introduction and removal of cement suspension and the supply of excess pressure (auth. of the USSR

Mob 43346, M.Kl.? B28S5/46, publ. in B.V. Mo3, 1979.1. 70 A well-known device for activating a cement suspension installed on a base with the help of shock absorbers, a frame with vibrators, inside which a tank is placed on shock absorbers, made in the form of funnel-shaped sections placed one under the other, the bottom of each of which is connected to a pipeline, and its hydrodynamic the emitter is installed with a gap relatively below the lying side of the section. The tank is also equipped with 75 nozzles for the input and output of cement suspension and excess pressure (Authority of the USSR Mo874378, M. Cl. Z v28S5/46, Nadr. V.V. 1 Mo39, 1981).

The disadvantage of these inventions is that they are intended for dispersing mineral substances in the presence of significant excess pressure necessary to ensure the operation of hydrodynamic emitters and significant water consumption in the process of obtaining ultrasonic vibrations.

A known installation for the activation of cement suspension, which holds a container on shock absorbers, equipped with shaped sections connected to each other and forming a hermetic volume connected to a vacuum pump, with magnetostrictive transducers with membranes and piezoceramic emitters installed in it alternately horizontally in the center with Teflon tubes placed under them parallel to the inclined walls of the shaped sections (auth. of the USSR Mo1065214, M. Cl.Z В28С5/46, nadr. B.V. Mo1, 1984.1.

The disadvantages of this installation are: - insufficient degree of dispersion and mixing of the mixture; - - considerable labor intensity in manufactured containers (shaped sections); - low productivity due to the large length of suspension movement; - significant electricity costs. sch zo Also known is the device for activating cement suspension according to auto. St. USSR Mo1175720, M. Cl. 7 В28С5/46, nadr.

B.V. Mo32 of 1985, which is equipped with a magnetostrictive converter fixed in the bottom with a radiating plate parallel to the shafts, and the shafts are made of different speeds, one of which is high-speed made with disks fixed on it, which alternate with washers, and low- high-speed - in the form of a hollow drum with annular grooves for the entry of high-speed shaft discs. at

The disadvantages of the device are: c - insufficient degree of dispersion of solid particles and their mixing; - lack of conditions for obtaining the most powerful dispersant of solid particles - the phenomenon of cavitation.

As a prototype, the installation for the activation of cement suspension according to auto. St. USSR Mo1451027, M. Cl.

В26С, underground In B.V. Mo2 from 1989, which is equipped with funnels, each of which is placed under the membrane "70 Zm Mounted on the container with the help of a ring and spacer, placed parallel to the axis of the container, and each of the consecutive - in the bottom of the membrane, filled with a plate shape with a perforated baffle, and each transducer is placed on the bottom of the membrane. :z» Features that coincide with the prototype in the mixer-activator are: container with lids, which in the useful model is placed horizontally and unlike the vertical placement in the prototype; membranes with magnetostrictive converters, and in the first case of magnetostrictive converters, they are placed under the membranes, and in the second - above the membranes, and the membranes themselves differ in design and shape; nozzles with shut-off fittings, which in the first case are placed vertically on the lid and ("in") the bottom, and in the second case vertically on the container. their Disadvantages of this installation are: - insufficient degree of dispersion of solid particles; d" - difficulty of assembly and disassembly in operating conditions due to the complexity of the design.

The purpose of the useful model is to intensify the process of activation and mixing of the suspension, to improve the design and operation of the installation.

The task is achieved by the fact that the ultrasonic mixer-activator holds a vertically installed 5B cylindrical container, which consists of an upper section with a lid, equipped with a central inlet pipe with a cork valve and a lower section with a bottom mounted on shock absorbers, which is equipped with a central outlet pipe with a cork valve , between which, with the help of sealing and shock-absorbing ring gaskets, a membrane with holes is horizontally installed between the inner side of the section and a cylinder rigidly and centrally fixed to it from the upper side, to the inner side of which and the end of the disk-shaped membrane, a rigidly fixed upper ring concentrator with a central hole, cross section which has the shape of a trapezoid, the lower side of which is perpendicular to the vertical axis, and the upper side creates a funnel, while on the lower side of the puck-like membrane, a hemispherical membrane with holes along the perimeter is rigidly and centrally fixed from it in of the inner side of the magnetostrictive transducer of ultrasonic oscillations, above which the lower annular 65 / Concentrator with a central hole, similar in cross-section to the upper annular concentrator, except for the side adjacent to the hemispherical membrane and having its internal profile, is similarly fixed.

The design solution of the ultrasonic mixer-activator holding a container installed on shock absorbers with a lid and a bottom equipped with shut-off valves, a membrane with a magnetostrictive transducer of ultrasonic oscillations and concentrators of ultrasonic waves provides a number of essential features and advantages over known analogues and prototypes, the main of which are: 1 A partially new combination of features indicating the presence of significant differences: a cylinder rigidly and centrally attached to the puck-shaped membrane on the upper side with an upper ring concentrator provided with a central opening, the cross-section of which has the shape of a trapezoid, the lower side of which is perpendicular to the vertical axis, and the upper side creates a funnel ; on the lower side of the puck-shaped membrane /o similarly fixed hemispherical membrane with a hole along the perimeter rigidly and centrally fixed on the inner side of the magnetostrictive transducer of ultrasonic waves; above the magnetostrictive converter on the same side, a lower annular concentrator with a central hole of a similar cross-section is attached to the hemispherical membrane on the same side, with the exception of the side that is adjacent to the hemispherical membrane and has its internal profile. 2. Replacement of part of the signs with new ones, which also indicates the presence of significant differences: plate-shaped membranes are replaced by puck-shaped cylindrical and hemispherical ones; provision of each plate membrane with a magnetostrictive transducer of ultrasonic waves, which is attached to their lower side, replaced by one magnetostrictive transducer of ultrasonic waves, which is attached to the upper side of the hemispherical membrane; there is no need for ball valves, traction on hollow cone guides; the need for a vacuum system and an additional pipe with a cork valve has disappeared. Replacing part of the features with new ones leads to the improvement of the installation design.

This design solution made it possible to obtain an effective ultrasonic field in the entire volume of the installation, which, in turn, ensured the effect of powerful cavitation in the turbulent flows of the suspension, which is an adequate destructive factor of the solid phase in the liquid and the mixing of the products of the destruction of solid particles with the liquid phase. In addition to cavitation, impacts and co-impacts and mechanical erosion contribute to an increase in the specific surface area (activation) of the solid phase. The combined action of the mentioned factors leads to an increase in the degree of activation of the suspension and - high-quality mixing of its components after activation.

Z. Taking into account paragraphs 1 and 2, in the design solution of the ultrasonic mixer-activator, there are new types of connections and interactions between features, which also indicates the presence of significant differences in comparison with similar analogues and the prototype.

The ultrasonic mixer-activator holds a vertically installed cylindrical container consisting of an upper section 1 with a lid 2 equipped with a central inlet pipe Z with a cork valve 4, and a lower section 5 with a bottom b mounted on shock absorbers 7 and equipped with a central outlet pipe 8 with a cork valve 9. Between sections 1 and 5, with the help of sealing and cushioning ring gaskets 10 and 11, a membrane 12 with holes 13 is installed horizontally between the inner wall of section 1 and the cylinder 14 rigidly and centrally attached to it from the upper side to the inner the sides of which and the end of the disk-shaped membrane 12 are rigidly fixed upper annular concentrator 15 with a central hole 16, the cross-section of which has the shape of a trapezoid, the lower side of which is perpendicular to the vertical axis, and the upper side creates a funnel. "

On the lower side of the puck-shaped membrane 12, a rigidly and centrally fixed hemispherical membrane 17 with holes 18 along the perimeter of a rigidly and centrally fixed magnetostrictive transducer 19 of ultrasonic oscillations on its inner side, above which is similarly fixed the lower ring concentrator 20 with a central hole 21, similar to the transverse section, as the upper annular concentrator 15, except for the side adjacent to the hemispherical membrane and having its internal profile.

The ultrasonic mixer-activator works like this. c When the cork valve 9 is closed, the high-frequency generator (not shown) of the magnetostrictive converter 19 is turned on, and the cork valve 4 is open, the suspension for activation and mixing is fed through the inlet pipe C into the container 17 o. Their suspension enters the funnel-shaped space created by the upper surface of the upper ring 5r of the Concentrator 15, which with its powerful ultrasonic field acts on the turbulent flows of the suspension and causes cavitation phenomena in them. The powerful ultrasonic field is amplified by the ultrasonic field of cylinder 14, internal

From the side of which it radiates and transmits it through the solid body of the concentrator 15, which brings it to the focal zone of higher intensity, since cavitation does not occur in a solid contact medium.

Cavitation, as a powerful destructor of the solid phase in the liquid and a mixer of the products of the destruction of solid particles, with the liquid phase of the suspension is supplemented by the destructive action of these solid particles during their impacts and co-impacts, various types of friction and mechanical erosion. In turn, the increase in the specific surface of solid particles and their uniform distribution over the volume of the suspension contributes to a corresponding increase in the activity of the suspension as a whole.

Passing through the hole 16, which acts as a cylindrical concentrator and hydrodynamic emitter, where the concentration of the ultrasonic field is maximum, the suspension enters a similar funnel-shaped space because of the Ring concentrator 20 with a similar central hole 21, so the action of cavitation is also similar with some difference, to a greater extent, that the effect of the concentrator is enhanced not by a cylinder, but by a hemispherical, focusing ultrasonic waves, membrane 17.

Having passed through the central hole 21, which acts similarly to the hole 16, the suspension falls on the body of the magnetostrictive converter 19, cools it and is exposed to the action of its ultrasonic fields and the 65 ultrasonic field of the upper side of the hemispherical membrane 17.

After passing through the holes 18, which act similarly to the holes 16 and 18, the suspension gradually fills first the lower section 5, and then section 1 through the holes 13. At the same time, the suspension is affected by the ultrasonic fields emitted by the outer sides of the hemispherical membrane 17 and the cylinder 14, which helps to maintain the action cavitation in the entire volume.

After filling the container with the suspension, partially or completely open the cork valve 9 and remove the activated and mixed suspension through the outlet pipe. At the same time, the cork valve 4 regulates the volume of the suspension entering the container and the process continues in continuous mode.

At the end of the operation, the installation is washed in a similar way, after which the high-frequency generator (not shown) of the magnetostrictive converter is turned off. 70 When work is resumed, the processes are repeated.

Claims (1)

The formula of the invention is an ultrasonic mixer-activator, which contains a container vertically installed on shock absorbers with a lid and a bottom equipped with shut-off valves, a membrane with a magnetostrictive transducer of ultrasonic vibrations and a concentrator of ultrasonic waves, which is distinguished by the fact that its cylindrical container consists of an upper section with a lid equipped with a central inlet pipe with a cork valve, and a lower section with a bottom equipped with a central outlet pipe with a cork valve, between which a washer-like membrane with holes between the inner wall of the section and rigidly and centrally attached to it is horizontally installed with the help of sealing and shock-absorbing ring gaskets from the upper side, a cylinder, to the inner side of which and the end of the membrane, an upper ring concentrator with a central hole is rigidly fixed, the cross section of which has the shape of a trapezoid, the lower side of which is perpendicular to the vertical axis, and the upper side with forms a funnel, a hemispherical membrane with holes along the perimeter is similarly fixed on the lower side of the membrane with a rigidly and centrally fixed magnetostrictive transducer of ultrasonic vibrations on its upper side, above which, similarly to the upper one, a lower ring concentrator with a central hole and a similar transverse trapezoidal section is fixed, according to with the exception of the side that is adjacent to the hemispherical membrane and has its internal profile с «г о Зо «о - and? o o their 50 I" 60 b5