RU2296612C2 - Hydroacoustic homogenizer for multi-component and multi-phase media - Google Patents

Abstract

FIELD: hydroacoustic homogenizers; production of colloidal mono-dispersed systems in chemical, petrochemical, pharmaceutical, microbiological, cosmetic, food-processing and other industries.

SUBSTANCE: proposed hydroacoustic homogenizer has intake and drain reservoirs, pump with drive and homogenizing head with vortex chamber at tangential inlet passage and central outlet passage. Homogenizing head is provided with diaphragm-type resonator mounted in plane of vortex chamber end face forming toroidal resonance chamber around vortex chamber. Vortex chamber is provided with preliminary twisting chamber with tangential inlet passages.

EFFECT: improved quality of finished product due to intensification of action of hydroacoustic energy and increased amplification of amplitude-frequency characteristic; reduced cavitation wear of homogenizing head.

2 cl, 2 dwg

Description

The invention is intended to produce colloidal monodisperse systems in the chemical, petrochemical, pharmaceutical, microbiological, cosmetic, food and other industries.

An analogue of the invention is a wave homogenizer, including a receiving and drain tank, a pump with a drive and a homogenizing head (see USSR patent No. 1839612, class A 01 J 11/16, B 01 F 3/00, 30.05.90).

A disadvantage of the analogue is the low quality of homogenization of liquid products due to the weak wave action on the medium being treated.

The closest in essence and the achieved result to the claimed device is a homogenizer for multicomponent liquid products, including a receiving and draining tank, a pump with a drive and a homogenizing head, made in the form of a vortex chamber with tangential inlet and central output channels (RF patent No. 2032325, cl. A 01 J 11/16, 03/27/90).

The disadvantage of the prototype is the unsatisfactory quality of homogenization of the final product due to the weak wave impact on the processed medium and cavitation wear of the inner surface of the vortex chamber.

The purpose of the invention is to improve the quality of the final product due to the intensification of the impact of hydroacoustic energy on the processed medium and increase the durability of the device.

This goal is achieved by the fact that in a device containing a receiving and drain tank, a pump with a drive, connecting pipes and a homogenizing head with a vortex chamber made with tangential inlet and central output channels, the homogenizing head is equipped with a diaphragm resonator, forming a toroidal resonant chamber around the vortex chamber and the vortex chamber is installed with the possibility of regulating the annular gap and is equipped with a chamber for preliminary swirling of the flow with tangential flow channels, and the tangential input channels of the preliminary swirling chamber of the flow and the vortex chamber have the same rotational direction.

Justification of the distinguishing features.

In the proposed device, the diaphragm resonator serves to generate hydro-acoustic waves of a wedge tone. The toroidal resonance chamber serves to match the frequencies of the waves emitted by the vortex chamber and the diaphragm resonator, and to amplify the amplitude of the hydroacoustic waves. Adjustability of the annular gap by moving the vortex chamber relative to the edge of the diaphragm resonator makes it possible to change the amplitude-frequency parameters of hydroacoustic waves.

In the proposed device, unlike the prototype, the vortex chamber is equipped with a pre-swirling chamber with tangential inlet channels, and the tangential channels of the pre-swirling chamber and the vortex chamber have the same rotational direction.

This provides a preliminary rotational movement in front of the vortex chamber in the same direction as in the vortex chamber, and allows to obtain a certain initial tangential velocity at the entrance to the vortex chamber. This, in turn, will increase the acoustic efficiency and homogenization efficiency of the processed components. For this, the total cross section of the tangential channels of the preliminary swirling chamber must be not less than the total cross section of the tangential input channels of the vortex chamber. In addition, the pre-swirling chamber increases the durability (service life) of the vortex chamber.

Placing the homogenizing head inside the drain tank in a flooded space, in contrast to the prototype, contributes to a more complete use of sonar energy and improve the quality of products.

The invention is illustrated by the drawings.

figure 1 shows a schematic diagram of a device;

figure 2 shows a General view of a homogenizing head in section.

The device includes (see Fig. 1) a receiving tank 1, a pump with a drive 2, a homogenizing head 3, a drain tank 4. A receiving tank 1 is connected to the receiving pipe 5 of the pump 2. The discharge line 6 of the pump 2 is connected to the inlet pipe of the homogenizing head 3. The outlet pipe 7 is connected to the drain tank 4. The homogenizing head 3 has a housing 8 located in the housing 8, a vortex chamber 9 with tangential inlet channels 10. Inside the housing 8 there is a diaphragm resonator 11 mounted in the plane of the end face of the vortex chamber 9 with a sample By calling the toroidal resonance chamber 12 and the annular gap between the edge of the diaphragm resonator 11 and the end of the vortex chamber 9, while the vortex chamber 9 is fixed by means of a threaded connection 13 with the possibility of adjusting the annular gap. In order to increase the hydroacoustic efficiency, the vortex chamber 9 is equipped with a preliminary swirling chamber 14. The chamber 14 has tangential input channels 15. The tangential channels 10 and 15 have the same rotational direction.

The device operates as follows. A multi-component or multiphase liquid product (hereinafter referred to as the product) from the receiving tank 1 through the connecting receiving pipe 5 is pumped through the discharge pipe 6 to the homogenizing head 3 (see FIG. 1), where the product enters the pre-twisting chamber 14 through tangential channels 15 . In the chamber 14, the flow acquires a certain peripheral speed. Next, the rotating stream through tangentially directed channels 10 enters the vortex chamber 9, where the rotating stream acquires a higher rotation frequency than in the chamber 14 preliminary twisting of the stream. In this case, hydroacoustic waves are generated at the exit from the vortex chamber. Then, the rotationally pulsating flow from the vortex chamber is tangentially directed to the blade of the diaphragm resonator 11. At the diaphragm resonator 11, wedge-tone waves and intense vibrations of the diaphragm itself, which generate dipole waves, are excited. The tangential pulsating flow simultaneously enters the toroidal resonance chamber 12. Oscillations of the diaphragm resonator 11 lead to pressure pulsation in the toroidal resonance chamber 12. The output stream from the toroidal resonance chamber 12 with an oscillation frequency of the diaphragm resonator 11 interrupts the stream entering it. As a result of this, at the annular exit from the toroidal resonance chamber, hydroacoustic waves of a monopole nature are generated. In this case, the toroidal resonance chamber serves to coordinate the generated frequencies and amplify the amplitude of the hydroacoustic wave.

Oscillation of the diaphragm leads to a pulsation change in the incoming flow into the toroidal resonance chamber, its volume and pressure in it. In this case, the resonance chamber begins to emit sonar waves with a diaphragm oscillation frequency. The pulsation change in pressure in the chamber 12 with the oscillation frequency of the resonator 11 due to the pulsed action of the tangential flow exiting the vortex chamber 9 leads to an increase in hydroacoustic energy. This, in turn, leads to the activation of a multicomponent, multiphase product, to the appearance of various nonlinear effects of hydroacoustic and hydrodynamic cavitation, intensification of heat and mass transfer processes and an increase in the degree of homogenization and quality of the processed product.

Thus, the use of a diaphragm resonator, a toroidal resonance chamber, a vortex chamber with a preliminary swirling chamber in the homogenizing head, allows to increase the degree of homogenization and product quality and the service life of the homogenizing head.

In addition, the device has a simple structure compared to existing ones, technologically advanced in manufacture, has high reliability and availability due to the lack of moving parts, low energy consumption.

Claims (2)

1. A hydroacoustic homogenizer for multicomponent and multiphase media, including a receiving and draining tank, a pump with a drive, connecting pipes and a homogenizing head with a vortex chamber made with tangential inlet and central output channels, characterized in that the homogenizing head is equipped with a diaphragm resonator installed in the plane of the end face of the vortex chamber with an annular gap, forming a toroidal resonant chamber around the vortex chamber, and the vortex chamber is installed with possible it is equipped with an annular clearance control and is equipped with a pre-swirling chamber with tangential inlet channels, the tangential inlet channels of the pre-swirling chamber and the vortex chamber having the same rotational direction. 2. The homogenizer according to claim 1, characterized in that the homogenizing head is installed inside the drain tank.

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