Impedance combined type dust blowing gun silencing device and method based on perforation resonance

Abstract

The invention discloses an impedance combined type dust blowing gun silencing device and method based on perforation resonance. The device comprises a shell barrel, a dust blowing gun connector arranged at one end of the shell barrel, a micropore resonance plate and a silencing unit which are sequentially arranged in the shell barrel at intervals, and a cluster spray head which is detachably installed at the end, away from the dust blowing gun connector, of the shell barrel; a first silencing diffusion cavity is formed between the inner wall of one end of the shell barrel and the micropore resonance plate; a second silencing diffusion cavity is jointly formed among the micropore resonance plate, the shell barrel and the inner wall of the cluster spray head; and the outlet of the cluster spray head is a rectangular nozzle with a large length and width so as to reduce the volume of the injection potential nucleus. According to the invention, various noise reduction principles are integrated, the size is small, the noise reduction amount is superior to that of a traditional silencer, the air speed of the outlet of a dust blowing gun cannot be reduced, and the problems that the existing dust blowing gun adopts perforation resonance for noise reduction, the pressure loss is large, the air speed of the outlet of the dust blowing gun is reduced, the blockage is easy to occur, and the normal use of the dust blowing gun is influenced can be solved.

Description

technical field [0001] The invention belongs to the technical field of noise reduction of dust blowing guns, and more particularly relates to a perforated resonance-based impedance composite dust blowing gun noise reduction device and method. Background technique [0002] Dust blowing guns are widely used in hardware parts, electronic manufacturing, furniture manufacturing, toy manufacturing, automobile manufacturing, automobile maintenance and other industries. The pneumatic dust blowing gun uses the principle of air amplification to effectively reduce the consumption of compressed air, thereby generating a strong and accurate air flow, and driving the surrounding air to work together. The noise problem generated during this process is a problem that plagues many enterprises. [0003] Under normal circumstances, the noise of the dust blowing gun belongs to the injection noise, and the higher the air pressure, the better the dust blowing effect, and the greater the noise gen...

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Problems solved by technology

[0006] Aiming at the above defects or improvement needs of the prior art, the present invention provides a perforated resonance-based impedance composite dust blowing gun noise reduction device, by setting a dust blowing gun interface extending into the barrel at one end of the casing, and at the other end A cluster nozzle with an arc-shaped gradient structure is set, and a microporous resonant plate and a sound-absorbing unit are arranged at intervals between the dust-blowing gun interface and the cluster nozzle to form two sound-absorbing static pressure expansion chambers, and the outlet of the cluster nozzle has a large aspect ratio The rectangular nozzle can reduce the volume of the injection potential core. The invention integrates a variety of noise reduction principles. Noise elimination adopts perforation resonance, large pressure loss, low wind speed at the outlet of the dust blower, and easy blockage, which affects the normal use of the dust blower

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