CN202937514U

CN202937514U - ZKDG series resistance-enlarging multi-cavity resonance type ventilation fan silencer

Info

Publication number: CN202937514U
Application number: CN 201220343944
Authority: CN
Inventors: 刘凡岩
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-07-08
Filing date: 2012-07-08
Publication date: 2013-05-15
Anticipated expiration: 2022-07-08

Abstract

Provided is a ZKDG series resistance-enlarging multi-cavity resonance type ventilation fan silencer. Conception of resistance-enlarging multi-cavity resonance is adopted, and accordingly noises of a ventilation fan are greatly reduced. The technical scheme is that a first silencing cavity outer barrel is positioned on the outermost portion of the silencer, second flanges are arranged at two ends of the first silencing cavity outer barrel, the second flanges arranged at the two ends of the first silencing cavity outer barrel are connected with a second silencing cavity outer barrel, a damping material and a silencing cavity inner barrel are arranged in the first silencing cavity outer barrel, and a vibrating cavity partition plate is positioned on the inner side of the silencing cavity inner barrel and is connected with a flow guiding barrel. The second silencing cavity outer barrel and two ends of the flow guiding barrel are connected with first flanges.

Description

Multi-cavity resonance type ventilator silencing apparatus is expanded in the resistance of ZKDG series

Technical field

Model utility relates to a kind of member of ventilator, and specifically multi-cavity resonance type ventilator silencing apparatus is expanded in the resistance of a kind of ZKDG series.

Background technique

The present explosion-proof type press in type disrotatory axial flow local ventilating fan for mine in use, although between the inside and outside air duct of blower fan body filling sound absorbing material, but the noise due to motor itself, in addition due to the problem of ventilator structure itself, make distinguished and admirable flow velocity inequality, the fan blade rotation causes distinguished and admirable pulse, and owing to level impeller before and after the axial flow rotary blower fan being rotated relatively to the problems such as eddy current of generation, the noise produced is superimposed, only depend on the sound absorbing material between this inside and outside air duct of ventilator to eliminate the noise, to be difficult to the noise of ventilator is controlled at below 85dB, even if import and export and add traditional drum type silencing apparatus at ventilator, also be far longer than 85dB.For making air-blower noise really drop to below 85dB, my innovation and creation the ZKDG resistance expand multi-cavity resonance type ventilator silencing apparatus, it is compared with traditional noise elimination cavity, make the noise 7～30dB that descended, realized that air-blower noise is not more than the target call of 85dB, solved the air quantity of sacrificing ventilator, efficiency etc. for the traditional type silencing apparatus simultaneously, exchange blower fan noise elimination problem for, the ventilator air quantity is increased to some extent, and efficiency improves 3～6%, and the efficiency curve operation area is broader mild.

Summary of the invention

The utility model technical issues that need to address are, overcome the deficiency of background technique, and a kind of simple and reasonable silencing apparatus is provided.

Silencing apparatus of the present utility model has adopted resistance to expand the design of multi-cavity resonance, thus reduction by a relatively large margin the noise of ventilator.

The technological scheme of silencing apparatus is, the silencing apparatus outermost has first a noise elimination cavity urceolus, and there is the second flange at the first noise elimination cavity urceolus two ends, and second flange at two ends is connected with the second noise elimination cavity urceolus; Sound absorbing material, noise elimination cavity inner core are arranged in the first noise elimination cavity urceolus, and there is the chamber of shaking dividing plate noise elimination cavity inner core inboard, and the chamber dividing plate that shakes is connected with guide shell, and the second noise elimination cavity urceolus, guide shell two ends are connected with the first flange.

The accompanying drawing explanation

Accompanying drawing 1 is that multi-cavity resonance type ventilator silencing apparatus schematic diagram is expanded in the resistance of ZKDG series;

Accompanying drawing 2 is that multi-cavity resonance type ventilator silencing apparatus boundary dimension schematic diagram is expanded in the resistance of ZKDG series.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described, see accompanying drawing 1, multi-cavity resonance type ventilator silencing apparatus is expanded in the resistance of ZKDG series, outermost has first a noise elimination cavity urceolus (2), there is the second flange (7) at noise elimination cavity urceolus two ends, and second flange at two ends is connected with the second noise elimination cavity urceolus (8); Sound absorbing material (4), noise elimination cavity inner core (3) are arranged in the first noise elimination cavity urceolus, there is the chamber of shaking dividing plate (5) noise elimination cavity inner core inboard, the chamber dividing plate that shakes is connected with guide shell (6), and the second noise elimination cavity urceolus, guide shell two ends are connected with the first flange (1).Wherein the first noise elimination cavity urceolus, the second noise elimination cavity urceolus, the chamber dividing plate that shakes, the first flange, the second flange steel plate are welded, and noise elimination cavity inner core, guide shell are welded with perforated plate, and sound absorbing material is selected the waterproof type super glass wool.

Claims

1.ZKDG multi-cavity resonance type ventilator silencing apparatus is expanded in the series resistance, outermost has first a noise elimination cavity urceolus (2), there is the second flange (7) at the noise elimination cavity two ends, it is characterized in that in described the first noise elimination cavity urceolus having sound absorbing material (4), noise elimination cavity inner core (3).

2. multi-cavity resonance type ventilator silencing apparatus is expanded in the resistance of ZKDG series according to claim 1, it is characterized in that second flange at described the first noise elimination cavity urceolus two ends is connected with the second noise elimination cavity urceolus (8).

3. multi-cavity resonance type ventilator silencing apparatus is expanded in the resistance of ZKDG series according to claim 1, it is characterized in that there is the chamber of shaking dividing plate (5) described noise elimination cavity inner core inboard.

4. multi-cavity resonance type ventilator silencing apparatus is expanded in the resistance of ZKDG series according to claim 3, it is characterized in that the described chamber dividing plate that shakes is connected with guide shell (6).

5. according to the described ZKDG series of claim 2 or 4, multi-cavity resonance type ventilator silencing apparatus is expanded in resistance, it is characterized in that described the second noise elimination cavity urceolus, guide shell two ends are connected with the first flange (1).