UA68549A - Suspension activator - Google Patents

Abstract

The suspension activator contains the sealed cylindrical capacity with a bottom and a cover vertically mounted on the shock absorbers, locking-distributive valves and membrane placed inside. On the capacity under the cover is horizontally mounted the membrane with openings on the perimeter of the magnetostrictive transducer of ultrasonic oscillations, which is centrally and rigidly mounted on it. From its lower side the hollow truncated conical concentrator of ultrasonic oscillations is centrally and rigidly fixed by its large base, inside which is centrally and rigidly fixed by large base from the lower side of the membrane the central conical concentrator of ultrasonic oscillations. The concentrators of the plate-type are rigidly fixed on it: first from the membrane and all unpaired are turned with convex side upward, second with openings in edge zone of area of their fixing and all paired with the same openings - with convex side downward. In this case their diameters decrease from top to bottom in accordance with the decrease of the diameter of central concentrator. The space between them and internal surface of hollow conical concentrator remains constant. The diameters of unpaired auxiliary concentrators ensure this space 2.5 times more.

Description

Description of the invention

The invention relates to construction, electrical, food, paint and other equipment, in particular, 2 for the activation and mixing of solid particles with liquid.

A well-known installation for the activation of cement suspension (patent of Ukraine Mo 4438, Cl. B28С5/46, publ. in Byul. Mo 6-1, 1994), which is equipped with funnels, each of which is placed under the membrane and mounted on the container with the help of a ring and a gasket , placed parallel to the axis of the container, by a rod with ball valves, one of which is placed in the cover of the container, and each of the following ones - in the bottom of the plate-shaped membrane with a perforated 70 bend, and each transducer is located on the bottom of the membrane.

The disadvantages of the installation are: - the complexity of the installation design; - unreliability of valve system operation; - insufficient productivity of the installation due to the significant length of the suspension movement path; 12 - significant consumption of electricity in the presence of several magnetostrictive converters.

The well-known disperser-mixer (patent of Ukraine Mo 4437, Cl. B28С5/46, publ. in Byul. Mo 6-1, 1994), which is equipped with a vibration exciter placed on the upper membrane and connected through a cap to a spring-loaded perforated cup, fixed on the lid of the container, and the concentrator of ultrasonic vibrations is made sectionally; each section is placed between membranes of the same diameter and curvature. At the same time, the end of the concentrator has a convex surface connected to the working surface of the lower membrane, installed with the help of a spring in the container. Each section of the concentrator is made at least with one projection placed in the central opening of the corresponding membrane, and the length of the projection does not exceed half the length of the opening.

Disadvantages of the disperser-mixer are: 29 - insufficient quality of mixing of suspension components; « - an insufficient ultrasonic field for the occurrence of cavitation, which reduces the qualitative indicator of the dispersion of solid particles in the liquid. A mixer-disperser is also known (patent of Ukraine Mo 14203, Cl. В828С5/46, publ. in

Bul. Mo 22, 1990), which is equipped with additional emitters, the container is made in the form of a truncated cone, placed with a large base on shock absorbers and has ring brackets on the side surface, on which emitters, made in the form of ring piezoceramic transducers, are placed through elastic gaskets, and "Its disks are fixed on the vertical shaft of the coaxial capacitance drive, and the diameter of each disk, placed under the corresponding ring converter, is smaller than the diameter of the last one. Disadvantages of the disperser-mixer are: o - low productivity of the installation due to the considerable length of the suspension movement path; Ge) - absence of cavitation, which reduces the quality of dispersion of solid particles and their mixing with liquid; 3o - the complexity of the design due to the presence of a moving node. eh

As a prototype, the "Dispergator" was adopted according to the patent of Ukraine Mo 4819, cl. 828С5/46, publ. in Bul. Mo 7-1, 1994, which is equipped with bushings placed on the side surface of the container between the membranes, the holes in the odd membranes are located on the periphery, and in the even ones - in the center, while the plane of the cross-section of the central hole is equal to the sum of the planes of the cross-sections of the holes on the periphery With 50 The disadvantages of the prototype are: c - low degree of dispersion of solid particles in the liquid due to the absence of cavitation;

From" - insufficient quality of mixing of suspension components for the same reason.

Common features of the prototype with the claimed object are the presence of a vertically placed container mounted on shock absorbers and equipped with a cover and a bottom with inlet and outlet nozzles for the suspension with shut-off and distribution fittings and a membrane emitting ultrasonic waves. b The task of the invention is to improve the quality of the suspension by intensifying the process of activation and dispersion of solids

Ge | particles and mixing them in a liquid.

The task is achieved by the fact that the suspension activator is provided with a membrane placed horizontally under the i-th cover with the help of shock-absorbing and sealing gaskets, equipped with holes along the perimeter of i" 20 Centrally and rigidly fixed by its large base, a hollow truncated conical concentrator of ultrasonic vibrations with a bevel and an open lower part a small base, in the middle of which is centrally and rigidly fixed with a large base from the lower side of the membrane, a central conical concentrator of ultrasonic vibrations with a rounded top, on which plate-shaped concentrators are rigidly fixed: the first from the membrane and all odd ones turned with the convex side up; the second one with a hole in the extreme zone 29 from the place of their attachment, and all pairs with the same holes - convex side down, while their diameters in. decrease from top to bottom in accordance with the decrease in the diameter of the parallel concentrator so that the gap between them and the inner surface of the hollow concentrator remains a constant value, and the diameters of the odd plate concentrators provide a similar gap 2.5 times larger.

The design solution of the suspension activator provides a number of significant features and advantages over 60 analogues and the prototype. 1. An essential feature "... a horizontally installed membrane with holes along the perimeter parallel to and rigidly installed on it a magnetostrictive transducer of ultrasonic vibrations...".

Many piezoceramic horizontally mounted membranes are replaced by a single membrane that is subjected to ultrasonic oscillations using a magnetostrictive transducer. because the replacement of part of the features with new ones made it possible to obtain a powerful ultrasonic field, which ensures the occurrence of cavitation in the suspension, and, accordingly, to radically increase the activation of the suspension, the dispersion of solid particles and their mixing with the components of the suspension. 2. Essential feature: "...on its lower side, a hollow truncated cone concentrator of ultrasonic vibrations is centrally and rigidly fixed by its large base...".

The introduction of a new feature - a hollow cone-shaped concentrator made it possible to significantly strengthen the ultrasonic field by increasing the amplitude of the oscillatory displacement of the cone particles as a result of reducing its cross section in accordance with the law of conservation of momentum. The presence of a spherical surface, in addition, ensures the convergence of wave fronts - ultrasound focusing, which even more than 7/0 strengthens the ultrasonic field and, accordingly, the effect of cavitation on the suspension from the point of view of its activation and mixing.

C. An essential feature: "... the central conical concentrator of ultrasonic vibrations is centrally and rigidly fixed by a large base from the lower side of the membrane...".

The introduction of a new feature - the central conical concentrator was made to achieve the same goal. 4. An essential feature: "... a central conical hub... on which hubs /5 plate-shaped are rigidly fixed... 7.

The introduction of a new feature, in addition to strengthening the ultrasonic field, increases the intensity of mixing of the components of the suspension, which improves the quality of the final product. 5. An essential feature: "...plate-shaped concentrators: the first from the membrane and all odd ones turned with the convex side up; the second with a hole in the extreme zone from the place of their attachment, and all even ones with the same holes - with the convex side down, while their diameters decrease from top to bottom in accordance with the decrease in the diameter of the parallel concentrator so that the gap between them and the inner surface of the hollow concentrator remains a constant value, and the diameters of the odd plate concentrators provide a similar gap 2.5 times larger.

The introduced new feature, in addition to the amplification of the ultrasonic field, creates conditions for delaying the suspension in 25 cavitation zones in the process of moving from one to the second dish-shaped concentrator, intensive mixing of activated components of the suspension and dispersed solid particles, and when passing through the openings of "paired dish-shaped concentrators, the suspension additionally can be activated, since the holes work as hydrodynamic emitters under the action of cavitation.

In Fig. a cross-section of the suspension activator is shown. Gee! zo The suspension activator consists of a vertically installed container 1 with a bottom 2 equipped with a central nozzle Z with a cork valve 4 installed on shock absorbers 5 and a cover 6, with a central nozzle 7 equipped with a cork valve 8, under which between shock-absorbing and sealing gaskets 9 and a horizontally installed membrane 11 with holes 12 placed between the contour of the base rigidly and coaxially fixed on its upper side of the magnetostrictive transducer 13 of ultrasonic vibrations and

With a rigidly and centrally fixed base on its lower side, a hollow conical concentrator 14 "of ultrasonic vibrations, equipped with a bevel 15 and an open lower part 16, in the middle of which is rigidly and centrally fixed on the lower side of the membrane 11 by the base, a central conical concentrator 17 of ultrasonic vibrations with a rounded top , on which the auxiliary plate concentrators are rigidly fixed: the first 18 from the membrane 11 and all the odd ones are turned with the convex side up; the second 19 with holes 20 located in the extreme zone from the place of their attachment and all paired - with the convex side down, while their diameters decrease from top to bottom in accordance with the decrease in the diameter of the central concentrator 17 so that the gap between them and the inner surface of the hollow conical hub 14;" remains a constant value, and the diameters of odd auxiliary concentrators provide this interval 2.5 times larger.

The suspension activator works as follows.

When the cork valve 4 is closed, the cork valve 8 is open, and the ultrasonic oscillation generator (not shown) is turned on, connected to the magnetostrictive converter 13, a suspension that is subject to activation, dispersion and mixing of its components is supplied through the nozzle 7, which enters the body c magnetostrictive converter 13, cools it and at the same time, filling the space between the membrane 11 and the cover 6, is exposed to the action of the ultrasonic field, and passing through the holes 12, which work as hydrodynamic ve emitters, additional activation. With the help of bevel 15, the suspension enters the upper surface of the first

Ge) of the plate-shaped concentrator 18 and, flowing down it, enters the upper surface of the second plate-shaped concentrator 19, passes through holes that work as hydrodynamic emitters, etc. In the process of moving the suspension through the plate-shaped concentrators, it is exposed to the action of the ultrasonic field of the hollow body in the Conical concentrator 14, which simultaneously with the amplification of the ultrasonic field from the membrane 11 to its open part 16 works as a device focusing ultrasonic waves. Central hub 17 z

Plate-shaped concentrators 18 and 19 enhance the effect of ultrasound and intensification of the processes of activation, dispersion and mixing of suspension components. In addition, cavitation acts on the suspension along the entire path of movement, which is an important nonlinear effect of the intensification of the processes of activation, dispersion, and mixing of the components of the suspension in the ultrasonic field. Next, the suspension fills the container 1, it is additionally exposed to the action of the ultrasonic field emitted by the outer side of the hollow conical concentrator 14 and the lower sides of the membrane 11 and plate concentrators 18 and 19. after filling the container 1, the cork valve 4 is partially or completely opened and the suspension is removed for further use, and the process of activation, dispersion and mixing of suspension components continues continuously. At the same time, 65 cork taps 4 and 8 perform the role of regulators of advance and removal of suspension.

At the end of the activation of the suspension, the installation is similarly washed, after which the ultrasonic wave generator (not shown) is turned off.

When the work is resumed, the processes are repeated.

Laboratory studies have shown that upon activation of the cement of the Olshan cement plant, its dispersity increases by 25-3595 compared to the prototype and depending on its brand. and walls gi b iz dit g . che 70 18 y I: this is her ro a | Pplue r z as same a 9

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Claims (1)

The formula of the invention is a suspension activator, which contains a hermetically sealed cylindrical container vertically installed on shock absorbers with a bottom and a lid, a shut-off valve and a membrane placed inside, which differs from 70 in that the container under the lid is with the help of shock-absorbing and sealing gaskets, a membrane with holes along the perimeter of a centrally and rigidly installed magnetostrictive transducer of ultrasonic vibrations is installed horizontally on it, and on its lower side it is centrally and rigidly fixed with its large;" р r ultrasound u center р r base is a hollow truncated conical concentrator of ultrasonic vibrations with a bevel and an open lower U r U ultrasonic concentrator part of the small base, inside which is centrally and rigidly fixed by a large base from the lower side of the F 35 membrane central conical concentrator of ultrasonic vibrations with a rounded the top, on which plate-shaped concentrators are rigidly fixed: the first from the membrane and all the odd ones turned with the convex (oo) side up, the second with holes in the extreme zone from the place of their attachment and all the even ones with the same holes - sl with the convex side down, while their the diameters decrease from top to bottom in accordance with the decrease in the diameter of the central concentrator so that the gap between them and the inner surface of the hollow conical Ш» 50 concentrator remains constant in size, and the diameters of odd auxiliary concentrators provide this gap 2.5 times larger. Official bulletin "Industrial Property". Book 1 "Inventions, useful models, topographies of integrated microcircuits", 2004, M 8, 15.08.2004. State Department of Intellectual Property of the Ministry of Education and Science of Ukraine. 60 b5