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High-power wide-band pneumatic sounding device

A sound-generating device and wide-band technology, which is applied in the direction of sound-generating devices and instruments, can solve the problems of low air consumption, difficulty in taking into account frequency modulation and sound wave energy, etc., to improve the efficiency of air-to-acoustic conversion, improve the efficiency of air-to-acoustic conversion, and reduce escape Effect

Pending Publication Date: 2019-03-01
NANJING CHANGRONG ACOUSTIC INC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult for the sound wave generating devices on the market to take into account both frequency modulation and sound wave energy, and keep the gas consumption at a low level.

Method used

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  • High-power wide-band pneumatic sounding device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] This embodiment provides a high-power broadband pneumatic sounding device, such as figure 1 and figure 2 As shown, it includes a sound amplifying part 1, the sound amplifying part 1 includes a sound amplifying channel, the sound amplifying part 1 is connected with the front end cover 2, and the front end cover 2 is detachably connected with the rear end cover 9 to form an inner cavity; the fixed ring 3 is cylindrical , one end of which is fixed between the sound amplifying part 1 and the front end cover 2, and communicates with the sound amplifying channel of the sound amplifying part, and the other end extends into the inner cavity, and the inner bottom surface of this end is provided with a diversion cone 4, a diversion cone 4 The diversion direction is towards the loudspeaker part 1; the moving coil 5 includes a barrel section and a shaft section, the barrel section is connected to the front end cover 2 through a large bearing 6, the shaft section is connected to th...

Embodiment 2

[0049] This embodiment is a further improvement on the basis of Embodiment 1. In the high-power broadband pneumatic sounding device provided by this embodiment, the loudspeaker adopts an exponential curve design, and its sound wave inlet flange is connected to the flange hole of the front end cover 2. connection, secured by screws. The installation step of the fixed ring 3 is between the flange of the loudspeaker 1 and the flange of the front end cover 2. The main body of the fixed ring 3 extends into the inner cavity of the front end cover from the outside to the inside. The bottom of the fixed ring 3 is equipped with a guide cone 4. The step of the barrel section of the moving ring 5 is installed on the step of the inner cavity of the front end cover 2 by means of the large bearing 6. The large bearing 6 is a deep groove ball bearing, and the large bearing 6 controls the gap between the moving ring 5 and the fixed ring 3. The 5 shaft sections of the moving coil are partially...

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PUM

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Abstract

The invention discloses a high-power wide-band pneumatic sounding device, comprising a sound-amplifying component, the sound-amplifying component is connected with a front end cover, and the front endcover and a rear end cover are detachably connected and form an inner cavity; one end of a fixed coil is fixed between the sound-amplifying component and the front end cover, and communicates with asound-amplifying channel of the sound-amplifying component, the other end of the fixed coil protrudes into the inner cavity, and has an inner bottom surface provided with a flow-guiding cone; a movingcoil includes a cylinder section and a shaft section, the cylinder section is connected with the front end cover via a large bearing, the shaft section is connected to the rear end cover through a small bearing, the cylinder section is arranged at the fixed coil in the inner cavity in a sleeving way, and the shaft section partially passes through the rear end cover, and is connected with the output shaft of a variable frequency motor through a coupler; the cylinder section sleeving the fixed coil and corresponding parts of the sleeved fixed coil are both provided with vent holes; and the rearend cover is provided with an air inlet connecting port, and the air inlet connecting port is connected with an air inlet joint. Compared with existing products on the market, the device disclosed bythe invention has higher sound wave energy, a higher sound wave output frequency band and low gas consumption.

Description

technical field [0001] The invention relates to a high-power wide-band pneumatic sounding device, which can remove particle accumulation in equipment in industries such as power generation, coal, steel, and chemical industry by emitting strong sound waves with adjustable frequency. Background technique [0002] At present, the aerodynamic sound wave generators used in engineering practice to remove the accumulation of particles mainly include: resonant cavity sound wave generator, diaphragm sound wave generator, and flute sound wave generator. [0003] Both the resonant cavity type sound wave generator and the diaphragm type sound wave generator are sound wave generating devices with a fixed frequency. According to the different environment of the project site, the frequency of the applied sound wave is different. For example, low-frequency sound wave generators are suitable for large silos, and higher-frequency sound wave generators are suitable for small and medium-sized s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K15/04
CPCG10K15/04
Inventor 舒忠平夏瑞芳刘宇清张荣初
Owner NANJING CHANGRONG ACOUSTIC INC