RU2591974C1 - Rotor-pulsation apparatus - Google Patents

Abstract

FIELD: manufacturing technology.

SUBSTANCE: invention relates to devices for producing stable dispersion systems with liquid phase. Rotary-pulsation device comprises an electric motor with controlled frequency of rotation, drive-multiplier. Working part includes cylindrical housing with inlet and outlet pipes. In housing there is a coaxially arranged rotor, which is rigidly fixed on vertical shaft of drive. Rotor has two rows of concentric teeth, guide channels with depth variable towards periphery and annular corrugated zone. In housing cover, coaxial to rotor, stator is rigidly fixed, said stator having two rows of concentric teeth and circular corrugated zone. Treated mixture through inlet pipe is fed into central part of rotating rotor, from where by centrifugal forces is supplied to axial clearance between rotor and stator. After passing through gap between teeth elements processed medium flow enters guide channels of rotor, and then enters corrugated working zone.

EFFECT: technical solution enables to intensify processes of dispersion, emulsification and homogenisation in processing disperse systems with liquid phase.

1 cl, 4 dwg

Description

The device is designed to obtain stable dispersed systems with a liquid phase and can be used in food, chemical, pharmaceutical and other industries.

Known rotary pulsation apparatus [1], which contains a housing with a rotor installed in it, on the basis of which holes are made. Hemispherical blades, which are located near the holes of the rotor base, are installed on the outer side of the rotor in the apparatus body. The disadvantage of this device is the low efficiency of the process due to the relatively large gap between the rotor and the stator in a vertical plane.

Known rotor-pulsation apparatus [2], including a working chamber with a device for inputting the contacting phases and the outlet pipe of the emulsion concentrically installed in it by the rotor and stator having radial channels. The input device for the contacting phases is made in the form of an injection mixing unit, while the nozzle is located directly in the chamber of the apparatus. The central part of the rotor has the shape of a truncated cone with a recess in the apex and at least two concentric annular protrusions on the side surface. The disadvantage of this design is the low efficiency of the process when processing dispersed systems containing dietary fiber due to insufficient turbulization of the flow of the treated medium.

Closest to the invention is a multi-section rotor-pulsation apparatus [3], which contains a housing with a rotor and a stator installed in it with working elements in the form of teeth. The casing of the device is divided into two sections by partitions, in which there are holes of various diameters. One of the partitions is mounted on the shaft to the base of the rotor and is attached to it with a key, and the second is located in the middle part of the housing, with the lower side resting on a sleeve worn on the shaft, and the upper side fixed with a nut. The disadvantage of this design is the low efficiency of the process in the processing of dispersed systems containing dietary fiber due to the insufficient number of zones of change in speed and pressure in the flow of the treated dispersed system.

The basis of the invention is the task of multi-factorial repeated exposure of the medium to be treated with additional turbulization of the flow of the treated mixture and the creation of conditions for abrasion of the dispersed phase in a thin layer. The problem is solved in that the device contains a housing with inlet and outlet nozzles with a rotor and a stator installed in it with working elements in the form of concentrically arranged teeth, characterized in that the rotor and stator at the periphery have annular corrugated working zones, and in the corrugated zone of the rotor made radial channels with decreasing depth to the periphery.

In FIG. 1 shows a schematic diagram of a rotary pulsation apparatus. The rotary pulsation apparatus comprises an electric motor 1 with an adjustable rotation speed, a drive-multiplier 2. The working part includes a cylindrical housing 3 with input 4 and output 5 nozzles. In the housing, a rotor 6 is coaxially located, rigidly fixed to the vertical shaft 7. In the cover 8 of the housing, coaxially with the rotor, the stator 9 is rigidly fixed.

In FIG. 2 shows a rotor containing a series of rectangular in cross section concentrically spaced teeth 10, a series of trapezoidal concentrically spaced teeth 11, radial channels 12 with a depth varying to the periphery, made in a corrugated working area 13 having a ring shape.

In FIG. 3 shows a stator comprising a row of trapezoidal rectangular, concentrically spaced teeth 14, a row of concentrically spaced rectangular teeth 15, and a working corrugated zone 16 having a ring shape.

The device operates as follows.

The mixture to be processed through the inlet pipe 4 is fed into the central part of the rotating rotor 6, from where, under the action of centrifugal forces, it enters the axial clearance between the rotor and the stator (zone 17, Fig. 4), and a shift occurs due to a sharp change in the direction of flow and its speed and stretching in the layers, there is a preliminary dispersion of the treated medium. In zones 18, 19 and 20, the above processes are repeated. After passing the gap between the gear elements, the flow of the medium to be processed enters the guide channels of the rotor (zone 21), which are made with a depth that decreases to the periphery of the rotor, which helps to increase the flow rate of the medium to be processed at the channel exit. The corrugated working zone 22 creates the effect of abrasion in a thin layer for additional destruction of fibrous inclusions, mechanical activation of the dispersed system and the formation of stable intermolecular bonds.

At the same time, when the rotor rotates, the radial channels of the rotor are periodically aligned and overlapped with the stator channels, which leads to the occurrence of hydraulic shocks and the development of cavitation, as a result of which the medium being processed is subjected to intense hydrodynamic and acoustic influences. The combination of these effects contributes to the intensification of processes such as homogenization, dispersion and emulsification in the processing of dispersed systems with a liquid phase.

Thus, the proposed device allows a better quality, compared with the above analogues, to carry out the processes of dispersion, emulsification and homogenization in dispersed systems with a liquid phase.

Literature

1. Pat. No. 2309791, Russian Federation, IPC ⁷ B01F 7/00, B01F 7/28 / Rotary-pulsation apparatus with guide vanes / Ivanets G.E., Svetkina E.A., Grunich S.V., Yaduta A.Z. Applicant: Ivanets G.E., Svetkina E.A., Grunich S.V., Yaduta A.Z., applicant 12.12.2005, publ. 11/10/2007.

2. Pat. No. 2299091, Russian Federation, IPC ⁷ B01F 3/08, B01F 7/28 / Rotary-pulsating apparatus for producing predominantly liquid-liquid systems / Sakovich G.V., Vasilishin M.S., Kukhlenko A.A., Sysolyatin S.V., Karpov A.G. Applicant: Sakovich G.V., Vasilishin M.S., Kukhlenko A.A., Sysolyatin S.V., Karpov A.G., applic. November 16, 2005, publ. 05/20/2007.

3. Pat. No. 2257257, Russian Federation, IPC ⁷ B01F 7/00, B01F 7/28 / Multisection rotary-pulsating apparatus / Ivanets G.E., Grunich S.V., Svetkina E.A., Artemasov V.V., Averkin S .AT. Applicant: Ivanets G.E., Grunich S.V., Svetkina E.A., Artemasov V.V., Averkin S.V., applicant. 03/15/2004, publ. 07/27/2005.

Claims (1)

A rotary pulsation apparatus comprising a housing with inlet and outlet nozzles with a rotor and a stator installed in it with working elements in the form of concentrically arranged teeth, characterized in that the rotor and stator at the periphery have annular corrugated working zones, and radial in the corrugated zone of the rotor channels with decreasing depth to the periphery.

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