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Powder aerosol generator for preventing low-fluidity drug from caking

An aerosol generator, low-fluidity technology, applied in aerosol preparation, colloid chemistry, colloid chemistry, etc., can solve the problems of upright accumulation and agglomeration, huge difference in fluidity, affecting the quantitative control of aerosol generators, etc. To achieve the effect of preventing clogging

Active Publication Date: 2016-09-21
CHINESE RES ACAD OF ENVIRONMENTAL SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the differences in powder particle size, shape, specific surface area and surface roughness of different test substances, the fluidity varies greatly.
The powder generator with good fluidity can achieve quantitative control well; the powder with poor fluidity is easy to form upright accumulation and agglomeration, and cause the blockage of the sampling pipeline and the negative pressure powder suction pipe, which affects the performance of the aerosol generator. Quantitative control; easy to cause instability of low-concentration aerosols

Method used

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  • Powder aerosol generator for preventing low-fluidity drug from caking
  • Powder aerosol generator for preventing low-fluidity drug from caking
  • Powder aerosol generator for preventing low-fluidity drug from caking

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Embodiment Construction

[0017] The following will be combined with Figure 1-3 The technical solution of the present invention is described in detail.

[0018] Such as Figures 1 to 3 As shown, a powder aerosol generator for preventing agglomeration of low-fluidity medicines includes a vibrating device, a diffuser and a controller 6 .

[0019] Among them, the function of the rapping device is to disintegrate the vertical accumulation and agglomeration of the powder by rapping, so as to ensure the quantitative control of the diffuser and expand the scope of application of the diffuser. It is mainly composed of electromagnet 1, cover plate 2, reset Spring 3, support 4 constitutes. The cover plate 2 is the top plate of the entire drug exposure cabinet. The electromagnet 1 is fixed on the cover plate 2 by screws; the bracket 4 is fixed on the cover plate 2 by its four threaded rods, and the vibration axis on the electromagnet 1 passes through the cover plate. The round hole in the center of the plate ...

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Abstract

The invention relates to a powder aerosol generator for preventing a low-fluidity drug from caking. The powder aerosol generator comprises a rapping device, a diffuser and a controller (6) and is characterized in that the rapping device comprises an electromagnet (1), a cover plate (2), offsetting springs (3) and a bracket (4); the cover plate (2) is a top plate of a toxicant exposure cabinet, and the electromagnet (1) is fixed on the cover plate (2) through a screw; the bracket (4) is fixed on the cover plate (2) through four threaded rods fitted with the bracket (4), and a vibrating shaft on the electromagnet (1) penetrates through circular holes in centers of the cover plate (2) and the bracket (4) and is stably connected with a sprayer (5); middles of the offsetting springs (3) are provided with stainless-steel shafts with threads in a penetrating manner, and the stainless-steel shafts penetrate through circular holes in the bracket (4) and are stably connected with the sprayer (5). According to the powder aerosol generator, the diffuser is used for regulating a spraying rhythm in a manner that the controller controls the frequency of opening of an electromagnetic valve, so that the aim of controlling the amount of the drug sprayed is achieved. Different sprayed drug amount outputs can be obtained through adjusting different control parameters, so that the problem in quantitative control on the drug sprayed is solved.

Description

technical field [0001] The invention relates to a powder aerosol generator, in particular to a powder aerosol generator which prevents the agglomeration of medicines with low fluidity. Background technique [0002] Existing powder aerosol generators mainly use turntables, conveyor belts and negative pressure powder suction methods to send solid powder into the aerosol generator unit, mix with dispersed airflow, and form aerosols. However, due to the differences in powder particle size, shape, specific surface area and surface roughness of different test substances, the fluidity varies greatly. The powder generator with good fluidity can achieve quantitative control well; the powder with poor fluidity is easy to form upright accumulation and agglomeration, and cause the blockage of the sampling pipeline and the negative pressure powder suction pipe, which affects the performance of the aerosol generator. Quantitative control; easy to cause instability of low-concentration ae...

Claims

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Application Information

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IPC IPC(8): B01J13/00
CPCB01J13/0095
Inventor 于云江苏凯华王琼向明灯刘红杰汪正东张艳平李良忠
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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