RU2410150C1 - Acoustic through-pass device of rotor type with controlled gap - Google Patents

Abstract

FIELD: machine building. ^ SUBSTANCE: device contains split case consisting of upper and lower parts interconnected by means of thread and equipped with branch for removal of product, of shaft installed in upper part of case and positioned in bearing block, of upper and lower rotor wheels and of movable disk with rims mounted on shaft, of partition between upper rotor wheel and movable disk, of fixed disk with concentric arranged rims installed on lower part of case, of channels cut in surfaces of rims, and of ejector with branches for input of processed medium and for suction of air attached to lower part of case. The lower part of the case bearing the fixed disk travels in vertical plane. The rims of movable and fixed disks correspond to isosceles trapezium in front cross section. The disks have two rows of rims during rotation periodically overlapping channels cut on their surfaces. Between the rims of the movable and fixed disks there is made a gap size of which diminishes with medium motion to outlet. ^ EFFECT: raised efficiency of high concentrated suspensions processing. ^ 2 dwg

Description

The invention relates to pulsating devices of rotary type and can be used to intensify chemical-technological processes occurring between liquid components when they are mixed, emulsified or dispersed, for example, when a dispersion of carbon black is obtained to modify synthetic rubber.

Known rotary pulsation apparatus with a vibrating rotor [patent RU 2203728 C2, class. B01F 7/00, 7/12], comprising a housing in which an electromagnet is mounted in front of the rotor with slots. The rotor is mounted on the shaft and is spring-tightened against the nut. A stator with slots is rigidly fixed to the cover. The apparatus includes nozzles for input and output of components, as well as seals. The rotor is informed of axial movements due to the supply of alternating voltage to the electromagnet winding, thereby changing the gap between the rotor and the stator.

The device has the following disadvantages:

- design complexity;

- the need to provide power to the magnet;

- increased wear of the seals.

Also known rotary dispersing apparatus [patent RU 2158629 C1, cl. B01F 7/28], comprising a housing with inlet and outlet nozzles of a stator mounted on the housing, and a rotor configured to rotate in the housing. The stator is installed between the blades and the rotor cylinder coaxially with the latter and with a gap between the inner surface of the stator and the rotor blades, as well as between the outer surface of the rotor cylinder, equal to 0.1-0.3 mm.

The disadvantages of the rotary dispersing apparatus are:

- unreliability of fastening parts due to the fact that the adjustment of the gap is carried out on the rotating part of the apparatus, which reduces the quality of reliability of fastening parts;

- the complexity of regulation associated with the preliminary disassembly and selection of additional elements for fixing the rotor.

The closest in technical essence to the present invention is an acoustic passage apparatus of the rotor type GART-Pr for hydrodynamic mixing and dispersion, comprising an acoustic chamber in which a rotating rotary emitter is located, consisting of two disks with concentrically arranged crowns, the upper and lower discharge chambers, the rims of the disks of the rotary emitter are located at an angle of 45 ° to the plane of rotation, and in order to create a pumping effect, the rotary emitter is placed between erhney and lower discharge chambers [Ed. testimonial. SU 250111 A, class B01F 11/02].

The disadvantages of this device are:

- reducing the efficiency of the process when processing highly concentrated suspensions;

- the inability to control the dispersed composition of the processed suspensions.

An object of the invention is the development of an acoustic rotary-type passage apparatus with an adjustable gap, which makes it possible to control the dispersed composition of the processed suspensions of various concentrations, increase the efficiency and intensify the processing of highly concentrated suspensions.

The technical task of the invention is achieved by the fact that in the rotary-type acoustic passage apparatus with an adjustable gap, comprising a collapsible housing consisting of upper and lower parts interconnected by a thread and provided with a pipe for product removal, a shaft installed in the upper part of the housing and located in bearing unit, upper and lower impellers and a movable disk with crowns mounted on a shaft, a partition located between the upper impeller and a movable disk, a fixed disk with concentrically spaced crowns mounted on the lower part of the housing, channels cut into the surfaces of the crowns, an ejector with nozzles for entering the medium to be treated and air intake attached to the lower part of the housing, while the lower part of the housing with a stationary disk placed on it is made to move in a vertical planes, and the crowns of the movable and fixed disks in the frontal section are equilateral trapeziums, and the disks have two rows of crowns, which periodically overlap the slot during rotation nnye channels in their surfaces, the crowns between movable and stationary disc a gap, the value of which decreases as it moves to the exit of the medium.

Changing the gap between the crowns of the movable and fixed disks allows you to directly affect the magnitude of shear and shear stresses and, as a result, to regulate the dispersed composition of the suspension of various concentrations, and to increase the efficiency in the processing of highly concentrated suspensions.

The performance of the rims of the disks, in the frontal section representing isosceles trapezoid, allows to provide an equal gap when moving the lower part of the body, which contributes to a uniform change in properties in terms of the volume of the processed material.

A gradual decrease in the gap to the exit organizes a stepwise increase in dispersion.

Air suction is organized in order to increase the effect of cavitation, by means of which the process intensifies.

The technical result of the invention is to control the dispersed composition of the processed suspensions of various concentrations, intensification, as well as improving the efficiency of the processing of highly concentrated suspensions.

Figure 1 shows a General view of the proposed apparatus, figure 2 - section aa in figure 1.

An acoustic rotary-type walk-through apparatus with an adjustable gap is a collapsible case consisting of upper 1 and lower 2 parts interconnected by a thread. In the upper part of the housing 1 there is a bearing assembly 3 in which the shaft 4 is mounted. Upper 5 and lower 6 impellers and a movable disk 7 with crowns 8 are mounted on the shaft. The resulting system is fixed by a nut 9. Between the upper impeller 5 and the movable disk 7 is located the partition 10. On the lower part of the housing 2 there is a fixed disk 11 with crowns 12. The surfaces of the crowns 8 and 12 form a gap, the size of which decreases towards the exit. Channels 20 are cut in the surfaces of the crowns. An ejector 13 with nozzles 16 for entering the medium to be treated and 17 for suctioning of air is fastened to the outer side of the lower part of the housing. Leakage prevention is organized using the 14.15 oil seals. The pipe 18 serves to remove the product, and the handle 19 - to rotate the lower part of the housing.

Acoustic passage apparatus of a rotary type with an adjustable gap works as follows.

The medium being processed enters the apparatus through the nozzle 16 under pressure, in the ejector 13 it acquires a high speed, dragging along the necessary amount of air through the nozzle 17. Further, falling into the lower part of the housing 2, it is processed. The upper 5 and lower 6 impellers serve to create a pumping effect. With the rotation of the movable disk 7, the channels of its crowns 8 periodically coincide with the channels of the crowns 12 of the fixed disk 11. During the period when the channels of the movable disk are blocked by the wall of the stationary disk, the pressure in the cavity of the movable disk increases, and when the channels of the movable and fixed disks are combined, the pressure is short the time period is reset, as a result of which a pressure pulse propagates in the channels. In this case, large shear stresses arise in the gaps. Changing the gap between the crowns 8 and 12 of the movable 7 and the stationary 11 disks allows you to directly affect the magnitude of shear and shear stresses and, as a consequence, to regulate the dispersed composition of the suspension. As the medium moves to the exit, the coarseness of the suspension decreases gradually. After processing, the resulting product is discharged for technological purposes through the pipe 18. Moving the lower part 2 of the apparatus body in a vertical plane allows you to adjust the gap between the working surfaces of the disks 7 and 11.

The proposed acoustic rotary-type walk-through apparatus with an adjustable gap allows:

- regulate the dispersed composition of the processed suspensions of various concentrations;

- to increase the efficiency and intensify the processing of highly concentrated suspensions.

Claims (1)

An rotary-type acoustic passage apparatus with an adjustable clearance, comprising a collapsible housing consisting of upper and lower parts interconnected by a thread and provided with a nozzle for product removal, a shaft installed in the upper part of the housing and located in the bearing assembly, upper and lower impellers and a movable disk with crowns mounted on a shaft, a partition located between the upper impeller and the movable disk, a fixed disk with concentrically arranged crowns mounted on the lower part of casing, channels cut into the surfaces of the crowns, an ejector with nozzles for entering the medium to be treated and air intake, attached to the lower part of the housing, while the lower part of the housing with a stationary disk placed on it is made with the possibility of movement in the vertical plane, and the crowns are movable and stationary the disks in the frontal section are isosceles trapezoidal, moreover, the disks have two rows of rims, which during rotation periodically overlap the channels cut in their surfaces, while between the rims IG Petritskaya and stationary disc a gap, the value of which decreases as it moves to the exit of the medium.

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