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System capable of stably generating dust aerosol

An aerosol and dust technology, which is applied in the field of aerosol generation, can solve the problems of unstable feeding, affecting the uniformity of aerosol, and aerosol that is difficult to disperse uniform particles, so as to achieve uniform particle dispersion, avoid clogging, and improve uniformity Effect

Active Publication Date: 2015-12-09
SICHUAN UNIV
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  • Summary
  • 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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  • System capable of stably generating dust aerosol
  • System capable of stably generating dust aerosol
  • System capable of stably generating dust aerosol

Examples

Experimental program
Comparison scheme
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 aerosol includes a material feeding apparatus, a dust diffusion apparatus, and a sound wave-type aerosol stabilizing apparatus. The material feeding apparatus includes a cylindrical body, a piston, a pressure sensor, a pushing gas source and a pressure controller. The dust diffusion apparatus includes a dust diffusion brush, a shell, a motor, a dust diffusion basin and a dust diffusion gas supply device. The sound wave-type aerosol stabilizing apparatus includes an aerosol stabilizing chamber, a signal generator, a signal amplifier and a loudspeaker. The system employs a gas-flow constant-pressure method for pushing a raw material powder, and then introduces the aerosol generated through primary diffusion into the aerosol stabilizing apparatus, in which the loudspeaker is installed, for outputting the aerosol, so that obtained aerosol particles are uniformly distributed and are stable in concentration.

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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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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