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A system capable of stably generating dust aerosols

An aerosol and dust technology, which is applied in the field of aerosol generation, can solve the problems of difficult particle dispersion and uniform aerosol, feed instability, and affect the uniformity of aerosol, so as to achieve the effect of uniform particle dispersion, uniform speed advancement and avoiding clogging

Active Publication Date: 2017-04-05
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this kind of aerosol generating device is: when the packing density of the dust raw material changes, the phenomenon of feeding instability will occur, which will eventually affect the uniformity of aerosol generation; the dust emitted after the first divergence is sprayed out at high speed through the nozzle It is difficult to obtain an aerosol with uniform particle dispersion and stable concentration output through secondary divergence

Method used

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  • A system capable of stably generating dust aerosols
  • A system capable of stably generating dust aerosols
  • A system capable of stably generating dust aerosols

Examples

Experimental program
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Effect test

Embodiment 1

[0028] In this embodiment, the system that can stably generate dust aerosol such as figure 1As shown, it consists of a feeding device, a dust dispersing device and an acoustic aerosol stabilization device. Described feeding device comprises cylinder body 5, piston 4, pressure sensor 2, propulsion gas source 1 and pressure controller 3, and cylinder body 5 is the cylindrical body that one end is open, and one end is closed, and piston 4 is a circular frustum body, and its outer diameter It is the same as the nominal size of the inner diameter of the cylinder body and is a dynamic fit. The piston is installed in the cylinder body. A constant pressure chamber 6 is formed, and the side wall of the cylinder between the other end face of the piston and the open end of the cylinder forms a silo 7. The pressure sensor 2 is inserted into the constant pressure chamber 6 and connected with the pressure controller 3. The pressure controller 3 The air inlet is connected to the propelling ...

Embodiment 2

[0030] In this embodiment, the system that can stably generate dust aerosol such as figure 2 As shown, it consists of a feeding device, a dust dispersion device, an acoustic aerosol stabilization device and an aerosol dilution device. The structure of the feeding device and the dust dispersing device is the same as that of Embodiment 1. The difference between the sonic aerosol stabilization device and Embodiment 1 is that a dilution gas inlet 24 is provided on the front side wall of the first chamber 16 - 1 . The aerosol dilution device is composed of a second compressor 28, a second particulate filter 27, a second pressure reducing valve 26, and a second air flow meter 25 connected in sequence, and the second air flow meter 25 in the aerosol dilution device is connected to the The dilution gas inlet 24 provided on the front side wall of the first chamber of the aerosol stabilization chamber is connected.

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Abstract

A system capable of stably generating dust aerosols, including a feeding device, a dust dispersing device and an acoustic aerosol stabilizing device; the feeding device includes a cylinder, a piston, a pressure sensor, a propelling gas source and a pressure controller, and the dust The dispersing device includes a dust dispersing brush, a housing, a motor, a dust dispersing basin and a dust dispersing air supply device, and the acoustic aerosol stabilizing device includes an aerosol stabilizing chamber, a signal generator, a signal amplifier and a loudspeaker. The above-mentioned system adopts the method of constant air flow to push the raw material powder, and introduces the aerosol formed by the first divergence into the aerosol stabilization chamber equipped with a speaker and then outputs it, so that the obtained aerosol particles are evenly dispersed and the concentration is stable.

Description

technical field [0001] The invention belongs to the field of aerosol generation, and in particular relates to a dust aerosol generation system. Background technique [0002] The dust aerosol generation system has a wide range of applications in the research and testing of high-efficiency air filters, dust inhalation toxicology research, flow field tracing, and basic research on aerosols. [0003] The dust aerosol generating system mainly includes a feeding device (part) and a dust dispersing device (part). CN200520114532.4 discloses a solid particle aerosol generating device. The feeding part of the device is controlled by a pulse motor to drive the piston to move at a certain speed to realize feeding. The dust diverging part includes a dust diverging brush, a nozzle and a dust diverging air supply system. , the dust diverging brush diverges the dust entering the upper chamber of the piston once and carries it into the nozzle. The upper 1 / 4 part of the diverging brush merge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/00B01F3/06B01F15/02B01F23/30
Inventor 余徽杨兴灿魏文韫周勇
Owner SICHUAN UNIV
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