RU2584539C1 - Rotor-pulsation apparatus - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: invention relates to devices for producing stable dispersion systems with the liquid phase and can be used in food, chemical, pharmaceutical and other industries. Rotor-pulsation apparatus comprises housing with inlet 8 and outlet 9 nozzles, motor 1 with controlled frequency of rotation, drive-multiplier 2, including horizontal shaft 3 and vertical shaft 4 coupled by screw gear. In housing there is rotor 11 and stator 13 with working elements in form of concentric teeth. Rotor 11 is rigidly secured on vertical shaft 4. Vertical shaft of drive multiplier 2 is installed in flexible supports with possibility of vertical and horizontal displacements.

EFFECT: higher intensity of dispersion, emulsification and homogenisation in disperse systems with liquid phase containing food fibres, due to imposition of vertical and horizontal vibrations, applied to rotor.

1 cl, 1 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 rotary pulsation apparatus with a vibrating rotor [3], 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. There is a minimum clearance between the rotor and the stator. The apparatus includes a cover, seal and nozzles for input and output of the processed product. The disadvantage of this design is the uncontrolled heating of the rotor from exposure to electromagnetic fields and undesirable effects on the product.

The invention is based on the task of intensifying the processes of dispersion, homogenization and emulsification by additional hydrodynamic effects on the material being processed.

The problem is solved in that the device comprises 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, a drive-multiplier with an adjustable speed, on the vertical shaft of which the rotor is rigidly fixed, and the drive shaft is the multiplier is installed in elastic supports with the possibility of vertical and horizontal movements.

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 multiplier drive 2, including a horizontal shaft 3 and a vertical shaft 4, coupled by a helical gear 5. The horizontal drive shaft is connected to the motor shaft by means of a friction clutch 6. Under the outer ring of the lower bearing of the vertical shaft spring 7 is installed. The upper bearing of the vertical shaft is mounted in a spring clip 8 '. The working part includes a cylindrical body with inlet 8 and outlet 9 nozzles. The vertical shaft is sealed at the bottom of the housing using a reinforced rubber sleeve 10. A rotor 11 coaxially located on the vertical shaft is coaxially located in the housing. In the cover 12 of the housing, coaxial to the rotor, the stator 13 is rigidly fixed.

The device operates as follows. The electric motor 1 through the friction clutch 6, the horizontal shaft 3 and the helical gear 5 rotates the rotor 11, which is rigidly mounted on the vertical shaft 4. The processed mixture is fed through the inlet 8 to the central part of the rotating rotor, from where it enters the gap between the rotor under the action of centrifugal forces and stator. With successive passage of the gap between the rotor and the stator, the processed mixture is subjected to intense mechanical stress from the working elements. When the rotor rotates, the radial channels of the rotor are periodically combined 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 emergence of processes such as homogenization, dispersion and emulsification in the processing of dispersed systems with a liquid phase and containing dietary fiber.

Oscillations in the vertical direction are created by the operation of a helical gear, which is not involute and at each entrance to the teeth of the wheel and the screw there is a micro shock, the elastic wave from which is transmitted to the teeth of the rotor, which is facilitated by the spring under the lower bearing of the vertical shaft. Fluctuations in the horizontal plane arise due to the dynamic imbalance of the rotor; during its rotation, the gyration moment displaces the shaft in the elastic supports 8 ', which creates oscillations of the radial clearance between the rotor and the stator. These oscillations have a high frequency and low amplitude due to their nature. The imposition of vertical and horizontal vibrations contributes to the emergence of complex hydrodynamic effects on the processed material.

Thus, the proposed device allows to intensify the processes of dispersion, emulsification and homogenization in dispersed systems with a liquid phase containing dietary fiber.

Literature

1. Pat. 2309791 Russian Federation, IPC7 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. declared 12.12.2005, publ. 11/10/2007.

2. Pat. 2299091 Russian Federation, IPC ⁷ B01F 3/08 B01F 7/28 / Rotary-pulsation 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. declared November 16, 2005, publ. 05/20/2007.

3. Pat. 2203728 Russian Federation, IPC ⁷ B01F 7/00 / Rotary-pulse apparatus with a vibrating rotor / Ivanets G.E., Plotnikov V.A., Safonova E.A. “Artemasov V.V., Kostenko E.A., Zverev V .P. Applicant: Ivanets G.E., Plotnikov V.A., Safonova E.A., Artemasov V.V., Kostenko E.A. declared 04/23/2001, publ. 05/10/2003.

Claims (1)

A rotary-pulsating 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 device is equipped with a multiplier drive with an adjustable rotation speed, on the vertical shaft of which the rotor is rigidly fixed, and the drive-multiplier shaft is mounted in elastic supports with the possibility of vertical and horizontal movements.

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