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A device for migrating suspended particles in an annular sound field and a method for the device

A suspended particle, ring technology, applied in the field of devices for migrating suspended particles in a ring sound field

Active Publication Date: 2017-06-09
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, toroidal sound field is rarely used in acoustic wave manipulation of suspended particle separation technology.

Method used

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  • A device for migrating suspended particles in an annular sound field and a method for the device
  • A device for migrating suspended particles in an annular sound field and a method for the device
  • A device for migrating suspended particles in an annular sound field and a method for the device

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] see Figure 1-4 , The device for migrating suspended particles in an annular sound field provided by the present invention includes: a speaker 1 , a through hole 2 , a partition 3 , a cavity 4 , a ring waveguide 5 , and a signal generator 6 .

[0028] The through hole 2 is located at the center of the partition 3; the diaphragm of the speaker 1, the through hole 2, the partition 3, and the cavity 4 form a semi-closed cavity 7 connected by the through hole 2 and the outside.

[0029] The cross-sectional area of ​​the through hole 2 is smaller than the cross-sectional area of ​​the ring waveguide 5; the cross-sectional area of ​​the through hole 2 is smaller than the cross-sectional area of ​​the cavity 4; the inner diameter of the ring waveguide 5 is less than 1 / 2 wavelength; the length of the ring waveguide 5 is an integer multiple of half a wavelength;

[003...

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Abstract

The invention discloses a device for migrating suspended particles in an annular sound field and a method for the device. The device comprises: a loudspeaker (1), a through hole (2), a partition (3), a cavity (4), and a ring waveguide tube (5), signal generator (6); the through hole (2) is located at the center of the partition (3); the diaphragm of the speaker (1), the through hole (2), the partition (3), The cavity (4) forms a semi-closed cavity (7) connected to the outside by the through hole (2); the cross-sectional area of ​​the through hole (2) is smaller than the cross-sectional area of ​​the ring waveguide (5); The cross-sectional area of ​​the hole (2) is smaller than that of the cavity (4); the inner diameter of the ring waveguide (5) is smaller than one-half of the wavelength. The present invention has the advantage of being able to generate an annular strong acoustic standing wave field and manipulate the separation of suspended particles from mixed fluids.

Description

technical field [0001] The invention relates to a device for separating mixed fluid composed of suspended particles and gas medium by using sound waves, in particular to a device for migrating suspended particles in an annular sound field. Background technique [0002] Sonic manipulation of suspended particle separation technology has the advantage of being able to re-separate mixed fluids that consist of suspended particles and gaseous media. Constructing a standing acoustic wave field with a specific structure by means of superposition of multiple acoustic waves is one of the important aspects of the research on the separation technology of suspended particles manipulated by acoustic waves. In the acoustic field environment, the suspended particles and gas components in the mixed fluid are jointly affected by the acoustic radiation force, gravity, Stokes force, temperature and Brownian motion. Among them, among the active and passive effects of various forces, the acousti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D49/00
Inventor 乔正辉黄亚继董卫程梅周树青
Owner SOUTHEAST UNIV
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