CN216044651U - Mining local ventilator with micro-perforated plate combined type noise elimination and reduction structure - Google Patents
Mining local ventilator with micro-perforated plate combined type noise elimination and reduction structure Download PDFInfo
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- CN216044651U CN216044651U CN202122260441.3U CN202122260441U CN216044651U CN 216044651 U CN216044651 U CN 216044651U CN 202122260441 U CN202122260441 U CN 202122260441U CN 216044651 U CN216044651 U CN 216044651U
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Abstract
The utility model discloses a mining local ventilator with a microperforated panel combined type noise elimination and reduction structure, which comprises a flow guide air inlet box, a main machine part and an air outlet box which are sequentially arranged along an air circulation path; the noise-eliminating and noise-reducing device is characterized in that noise-eliminating and noise-reducing structures are arranged in the diversion air inlet box, the main machine part and the air outlet box; the noise elimination and noise reduction structure at least comprises a micro-perforated plate with the perforation rate of less than 5 percent and breathable flame-retardant cloth. According to the utility model, according to different frequencies of noise when the fan operates, the ventilator uses the micro-perforated plate with the perforation rate of less than 5 percent, the breathable flame-retardant cloth is paved on the surface of the micro-perforated plate, and a cavity of an air layer is reserved at a certain position, the noise-reduction structure is filled with a porous noise-reduction material with a certain thickness and a sound-insulation rubber plate with a shock absorption effect, and the micro-perforated plate combined noise-reduction structure is formed by the mode, so that wind flow noise and vibration noise with different frequencies are reduced.
Description
Technical Field
The utility model relates to the technical field of mining ventilators, in particular to a mining local ventilator with a micro-perforated plate combined type noise elimination and reduction structure.
Background
At present, most of the noise reduction modes of mining local ventilator products are that a common perforated plate is laid in a fan, and a porous material is placed in a cavity outside the perforated plate to play a role in reducing noise. However, the perforated plate used in the product in the prior art has the aperture ratio of about 45-56 percent, the aperture is between phi 4 and phi 6, the perforated plate has large aperture and too large aperture ratio (more than 20 percent), only plays the role of protecting the net and does not play the role of resonance noise elimination.
Therefore, based on the above technical problems, a need is urgently needed for developing a novel local ventilator for mining by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a mining local ventilator with a micro-perforated plate combined type noise elimination and reduction structure, which is novel in structure, adopts the micro-perforated plate and porous material combined type noise elimination and reduction structure and effectively reduces the noise value.
In order to achieve the above purpose, the utility model provides the following technical scheme:
the utility model relates to a mining local ventilator with a microperforated panel combined type noise elimination and reduction structure, which comprises:
the air flow guiding inlet box, the main machine part and the air outlet box are sequentially arranged along the air flow path;
noise elimination and reduction structures are arranged in the diversion air inlet box, the main machine part and the air outlet box;
the noise elimination and noise reduction structure at least comprises a micro-perforated plate with the perforation rate of less than 5 percent and breathable flame-retardant cloth.
Further, one end of the flow guide air inlet box is configured as an air inlet;
the water conservancy diversion inlet box includes:
an air inlet box and a flow guide box;
an air channel extending towards the flow guide box is formed in the air inlet box, and the air inlet box is communicated with the main machine part through the flow guide box;
the air inlet is formed at one end of the air inlet box, which is far away from the flow guide box;
the noise elimination and noise reduction structure integrated along the extending direction of the air inlet box is configured into a first noise elimination and noise reduction structure;
the first noise elimination and noise reduction structure comprises a first micro-perforated plate with a perforation rate of less than 5% and a second micro-perforated plate with a perforation rate of less than 5%;
first microperforated panel and second microperforated panel are interval arrangement each other, just first microperforated panel with the second microperforated panel is close to one side each other and all has been laid ventilative fire-retardant cloth, just second microperforated panel with it has porous amortization material to fill between the first microperforated panel.
Further, the noise elimination and noise reduction structure integrated on one side, close to the inner wall, of the air inlet box is configured as a second noise elimination and noise reduction structure;
the second noise elimination and noise reduction structure comprises a second micro-perforated plate and a first micro-perforated plate, the second micro-perforated plate and the inner wall of the air inlet box are arranged at an interval, the first micro-perforated plate and the second micro-perforated plate are arranged at an interval, and the surfaces of the first micro-perforated plate and the second micro-perforated plate are both provided with breathable flame-retardant cloth;
a space between the second micro-perforated plate and the inner wall of the air inlet box is filled with porous silencing materials;
and the space between the first micro-perforated plate and the second micro-perforated plate of the second noise elimination and noise reduction structure is an air layer.
Further, the sound-deadening and noise-reducing structure integrated in the flow guide box is configured as a third sound-deadening and noise-reducing structure;
the third noise-reducing and noise-reducing structure comprises a second micro-perforated plate and a first micro-perforated plate, wherein the second micro-perforated plate is arranged at intervals with the inner wall of the flow guide box, the first micro-perforated plate is arranged at intervals with the second micro-perforated plate, and breathable flame-retardant cloth is paved on the surfaces of the first micro-perforated plate and the second micro-perforated plate;
porous noise reduction materials are filled between the second micro-perforated plate and the inner wall of the flow guide box;
an air layer is formed between the first micro-perforated plate and the second micro-perforated plate of the third noise-eliminating and noise-reducing structure;
and a sound insulation rubber plate is arranged between the second micro-perforated plate and the inner wall of the flow guide box.
Further, the host part is a primary host and a secondary host;
the primary host and the secondary host are arranged in parallel;
the noise-abatement structure integrated within the host portion is configured as a fourth noise-abatement structure;
the fourth noise elimination and noise reduction structure comprises a second micro-perforated plate arranged at intervals with the inner wall of the host part and a first micro-perforated plate arranged at intervals with the second micro-perforated plate, and breathable flame-retardant cloth is paved on the surfaces of the first micro-perforated plate and the second micro-perforated plate;
a porous sound-deadening material is filled between the second micro-perforated plate and the inner wall of the host part;
an air layer is formed between the first micro-perforated plate and the second micro-perforated plate of the fourth noise elimination and noise reduction structure;
and a sound insulation rubber plate is arranged between the second micro-perforated plate and the inner wall of the host part.
Furthermore, the noise elimination and noise reduction structure integrated in the air outlet box is divided into a fifth noise elimination and noise reduction structure and a sixth noise elimination and noise reduction structure;
the fifth noise elimination and reduction structure is arranged on the inner wall of the air outlet box;
and the sixth noise elimination and noise reduction structure is arranged in the middle of the air outlet box.
Further, the fifth noise reduction structure includes:
the second micro-perforated plate is arranged at a distance from the inner wall of the air outlet box; and
a first microperforated panel spaced apart from the second microperforated panel;
the surfaces of the first micro-perforated plate and the second micro-perforated plate are respectively paved with breathable flame-retardant cloth;
porous silencing materials are filled between the second micro-perforated plate and the inner wall of the air outlet box, and a space between the first micro-perforated plate and the second micro-perforated plate forms an air layer;
two sound insulation rubber plates are arranged between the second micro-perforated plate and the inner wall of the air outlet box, and the two sound insulation rubber plates are separated from each other;
and a porous sound-deadening material is filled between the two sound-deadening rubber plates.
Further, the sixth sound-attenuating and noise-reducing structure includes:
the first micro-perforated plate is arranged in the middle of the air outlet box, and breathable flame-retardant cloth is paved on the surface of the first micro-perforated plate;
and the inner side surface of the first micro-perforated plate is filled with a porous sound-deadening material.
In the technical scheme, the mining local ventilator with the micro-perforated plate combined type noise elimination and reduction structure has the following beneficial effects:
according to the utility model, according to different frequencies of noise when the fan operates, the ventilator uses the micro-perforated plate with the perforation rate of less than 5 percent, the breathable flame-retardant cloth is paved on the surface of the micro-perforated plate, and a cavity of an air layer is reserved at a certain position, the noise-reduction structure is filled with a porous noise-reduction material with a certain thickness and a sound-insulation rubber plate with a shock absorption effect, and the micro-perforated plate combined noise-reduction structure is formed by the mode, so that wind flow noise and vibration noise with different frequencies are reduced.
The test shows that the noise value of the ventilator can be reduced by more than 30 decibels, and the noise reduction effect is obvious.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic structural diagram of a mining local ventilator with a micro-perforated plate combined type noise elimination and reduction structure according to an embodiment of the present invention.
Description of reference numerals:
1. a flow guiding air inlet box; 2. a host portion; 3. an air outlet box; 4. a first microperforated panel; 5. a second microperforated panel; 6. a porous sound attenuating material; 7. a sound-insulating rubber sheet; 8. an air layer;
101. an air inlet box; 102. a flow guide box;
201. a first host; 202. and a second host.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1;
the mining local fan with microperforated panel combination formula noise elimination structure of making an uproar falls in this embodiment, and this fan includes:
the air flow guiding and air inlet box 1, the main machine part 2 and the air outlet box 3 are sequentially arranged along an air flow path;
noise elimination and reduction structures are arranged in the flow guide air inlet box 1, the main machine part 2 and the air outlet box 3;
the noise elimination and reduction structure at least comprises a micro-perforated plate with the perforation rate of less than 5 percent and breathable flame-retardant cloth.
Specifically, the embodiment discloses a structure suitable for noise elimination and reduction of a mine local ventilator, the structure is integrated in each region of the mine local ventilator, the structure is a noise elimination and reduction structure, and according to the calculation of the power of a fan, the noise elimination and reduction structure at least comprises a micro-perforated plate with a perforation rate of less than 5% and breathable flame-retardant cloth.
Preferably, one end of the air guide inlet box 1 of the present embodiment is configured as an air inlet;
the air guide inlet box 1 includes:
an air inlet box 101 and a flow guide box 102;
an air duct extending towards the flow guide box 102 is formed in the air inlet box 101, and the air inlet box 101 is communicated with the main machine part 2 through the flow guide box 102;
the air inlet is formed at one end of the air inlet box 101 far away from the flow guide box 102;
the noise elimination and noise reduction structure integrated along the extending direction of the air inlet box 101 is configured as a first noise elimination and noise reduction structure;
the first noise elimination and noise reduction structure comprises a first micro-perforated plate 4 with a perforation rate of less than 5% and a second micro-perforated plate 5 with a perforation rate of less than 5%;
first microperforated panel 4 and second microperforated panel 5 are arranged each other at an interval, and the ventilative fire-retardant cloth has all been laid to the one side that first microperforated panel 4 and second microperforated panel 5 are close to each other, and packs between second microperforated panel 5 and the first microperforated panel 4 and has porous amortization material 6.
The noise elimination and noise reduction structure integrated on one side, close to the inner wall, of the air inlet box 101 is configured into a second noise elimination and noise reduction structure;
the second noise elimination and noise reduction structure comprises a second micro-perforated plate 5 which is arranged at an interval with the inner wall of the air inlet box 101, and a first micro-perforated plate 4 which is arranged at an interval with the second micro-perforated plate 5, wherein the surfaces of the first micro-perforated plate 4 and the second micro-perforated plate 5 are both provided with breathable flame-retardant cloth;
the space between the second micro-perforated plate 5 and the inner wall of the air inlet box 102 is filled with porous silencing material 6;
the space between the first micro-perforated plate 4 and the second micro-perforated plate 5 of the second noise elimination and noise reduction structure is an air layer 8.
Preferably, the sound-deadening and noise-reducing structure integrated in the baffle box 102 of the present embodiment is configured as a third sound-deadening and noise-reducing structure;
the third noise-reducing structure comprises a second micro-perforated plate 5 arranged at intervals with the inner wall of the flow guide box 102 and a first micro-perforated plate 4 arranged at intervals with the second micro-perforated plate 5, and the surfaces of the first micro-perforated plate 4 and the second micro-perforated plate 5 are both paved with breathable flame-retardant cloth;
a porous sound-deadening material 6 is filled between the second micro-perforated plate 5 and the inner wall of the flow guide box 102;
an air layer 8 is formed between the first micro-perforated plate 4 and the second micro-perforated plate 5 of the third noise elimination and reduction structure;
between the second microperforated panel 5 and the inner wall of the baffle box 102 there is a sound-insulating rubber sheet 7.
Preferably, the host part 2 of the present embodiment is a primary host 201 and a secondary host 202;
the primary host 201 and the secondary host 202 are arranged in parallel;
the noise elimination and noise reduction structure integrated in the host portion 2 is configured as a fourth noise elimination and noise reduction structure;
the fourth noise elimination and noise reduction structure comprises a second micro-perforated plate 5 arranged at intervals with the inner wall of the host part 2 and a first micro-perforated plate 4 arranged at intervals with the second micro-perforated plate 5, and breathable flame-retardant cloth is paved on the surfaces of the first micro-perforated plate 4 and the second micro-perforated plate 5;
a porous silencing material 6 is filled between the second micro-perforated plate 5 and the inner wall of the main machine part 2;
an air layer 8 is formed between the first micro-perforated plate 4 and the second micro-perforated plate 5 of the fourth noise elimination and noise reduction structure;
a sound insulating rubber sheet 7 is provided between the second microperforated panel 5 and the inner wall of the main unit 2.
Preferably, the noise elimination and noise reduction structure integrated in the air outlet box 3 of the present embodiment is divided into a fifth noise elimination and noise reduction structure and a sixth noise elimination and noise reduction structure;
the fifth noise elimination and reduction structure is arranged on the inner wall of the air outlet box 3;
the sixth noise reduction structure is disposed at a middle position of the air outlet box 3.
Wherein, the fifth noise elimination and noise reduction structure comprises:
a second micro-perforated plate 5 arranged at an interval with the inner wall of the air outlet box 3; and
a first microperforated panel 4 arranged at a distance from the second microperforated panel 5;
the surfaces of the first micro-perforated plate 4 and the second micro-perforated plate 5 are respectively paved with breathable flame-retardant cloth;
porous silencing material 6 is filled between the second micro-perforated plate 5 and the inner wall of the air outlet box 3, and an air layer 8 is formed in the space between the first micro-perforated plate 4 and the second micro-perforated plate 5;
two sound insulation rubber plates 7 are arranged between the second micro-perforated plate 5 and the inner wall of the air outlet box 3, and the two sound insulation rubber plates 7 are separated from each other;
and a porous sound-deadening material 6 is filled between the two sound-deadening rubber plates 7.
Further, the sixth noise reduction structure described above includes:
the first micro-perforated plate 4 is arranged in the middle of the air outlet box 3, and breathable flame-retardant cloth is laid on the surface of the first micro-perforated plate 4;
the inner side of the first microperforated panel 4 is filled with a porous sound-deadening material 6.
In the technical scheme, the mining local ventilator with the micro-perforated plate combined type noise elimination and reduction structure has the following beneficial effects:
according to the utility model, according to different frequencies of noises when the fan operates, the ventilator uses the micro-perforated plate with the perforation rate of less than 5 percent, the breathable flame-retardant cloth is paved on the surface of the micro-perforated plate, and a cavity of an air layer 8 is reserved at a certain position, the noise-elimination and noise-reduction structure is filled with the porous noise-elimination material 6 with a certain thickness and the sound-insulation rubber plate 7 with the shock absorption effect, and the micro-perforated plate combined noise-elimination and noise-reduction structure is formed by combining the modes, so that wind flow noises and vibration noises with different frequencies are reduced.
The test shows that the noise value of the ventilator can be reduced by more than 30 decibels, and the noise reduction effect is obvious.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the utility model.
Claims (8)
1. A mining local ventilator with a micro-perforated plate combined type noise elimination and reduction structure comprises:
the air flow guiding and air inlet box (1), the main machine part (2) and the air outlet box (3) are sequentially arranged along an air flow path;
the method is characterized in that:
the diversion air inlet box (1), the main machine part (2) and the air outlet box (3) are internally provided with noise elimination and reduction structures;
the noise elimination and noise reduction structure at least comprises a micro-perforated plate with the perforation rate of less than 5 percent and breathable flame-retardant cloth.
2. The mining local ventilator with the micro-perforated plate combined type noise elimination and reduction structure is characterized in that one end of the air guide inlet box (1) is configured as an air inlet;
the flow guide air inlet box (1) comprises:
an air inlet box (101) and a flow guide box (102);
an air channel extending towards the flow guide box (102) is formed in the air inlet box (101), and the air inlet box (101) is communicated with the main machine part (2) through the flow guide box (102);
the air inlet is formed at one end, far away from the flow guide box (102), of the air inlet box (101);
the noise elimination and noise reduction structure integrated along the extending direction of the air inlet box (101) is configured into a first noise elimination and noise reduction structure;
the first noise elimination and noise reduction structure comprises a first micro-perforated plate (4) with a perforation rate of less than 5% and a second micro-perforated plate (5) with a perforation rate of less than 5%;
first microperforated panel (4) and second microperforated panel (5) interval arrangement each other, just first microperforated panel (4) with the one side that second microperforated panel (5) are close to each other all has been laid ventilative fire-retardant cloth, just second microperforated panel (5) with it has porous amortization material (6) to fill between first microperforated panel (4).
3. The mining local ventilator with the micro-perforated plate combined type noise elimination and reduction structure is characterized in that the noise elimination and reduction structure integrated on one side of the air inlet box (101) close to the inner wall is configured into a second noise elimination and reduction structure;
the second noise elimination and noise reduction structure comprises a second micro-perforated plate (5) which is spaced from the inner wall of the air inlet box (101) by a space, and a first micro-perforated plate (4) which is spaced from the second micro-perforated plate (5), wherein the surfaces of the first micro-perforated plate (4) and the second micro-perforated plate (5) are both provided with breathable flame-retardant cloth;
a space between the second micro-perforated plate (5) and the inner wall of the air inlet box (101) is filled with a porous silencing material (6);
and the space between the first micro-perforated plate (4) and the second micro-perforated plate (5) of the second noise elimination and noise reduction structure is an air layer (8).
4. The mining local ventilator with a micro-perforated plate combined sound and noise reduction structure according to claim 2, characterized in that the sound and noise reduction structure integrated in the baffle box (102) is configured as a third sound and noise reduction structure;
the third noise-reducing and noise-reducing structure comprises a second micro-perforated plate (5) and a first micro-perforated plate (4), wherein the second micro-perforated plate (5) is arranged at intervals with the inner wall of the flow guide box (102), the first micro-perforated plate (4) is arranged at intervals with the second micro-perforated plate (5), and the surfaces of the first micro-perforated plate (4) and the second micro-perforated plate (5) are respectively paved with breathable flame-retardant cloth;
a porous sound-deadening material (6) is filled between the second micro-perforated plate (5) and the inner wall of the flow guide box (102);
an air layer (8) is formed between the first micro-perforated plate (4) and the second micro-perforated plate (5) of the third noise elimination and reduction structure;
and a sound insulation rubber plate (7) is arranged between the second micro-perforated plate (5) and the inner wall of the flow guide box (102).
5. The mining local ventilator with the micro-perforated plate combined type noise elimination and reduction structure is characterized in that the host part (2) is divided into a primary host (201) and a secondary host (202);
the primary host (201) and the secondary host (202) are arranged in parallel;
the noise elimination and noise reduction structure integrated in the host part (2) is configured into a fourth noise elimination and noise reduction structure;
the fourth noise elimination and noise reduction structure comprises a second micro-perforated plate (5) arranged at intervals with the inner wall of the host part (2) and a first micro-perforated plate (4) arranged at intervals with the second micro-perforated plate (5), and breathable flame-retardant cloth is paved on the surfaces of the first micro-perforated plate (4) and the second micro-perforated plate (5);
a porous sound-deadening material (6) is filled between the second micro-perforated plate (5) and the inner wall of the host part (2);
an air layer (8) is formed between the first micro-perforated plate (4) and the second micro-perforated plate (5) of the fourth noise elimination and reduction structure;
and a sound insulation rubber plate (7) is arranged between the second micro-perforated plate (5) and the inner wall of the host part (2).
6. The mining local ventilator with the micro-perforated plate combined type noise elimination and reduction structure is characterized in that the noise elimination and reduction structure integrated in the air outlet box (3) is divided into a fifth noise elimination and reduction structure and a sixth noise elimination and reduction structure;
the fifth noise elimination and reduction structure is arranged on the inner wall of the air outlet box (3);
and the sixth noise elimination and noise reduction structure is arranged in the middle position of the air outlet box (3).
7. The mining utility ventilator of claim 6, characterized in that said fifth muffling and noise reducing structure comprises:
a second microperforated panel (5) arranged at a distance from the inner wall of the air outlet box (3); and
a first microperforated plate (4) arranged at a distance from the second microperforated plate (5);
the surfaces of the first micro-perforated plate (4) and the second micro-perforated plate (5) are respectively paved with breathable flame-retardant cloth;
a porous sound-deadening material (6) is filled between the second microperforated panel (5) and the inner wall of the air outlet box (3), and a space between the first microperforated panel (4) and the second microperforated panel (5) is formed as an air layer (8);
two sound insulation rubber plates (7) are arranged between the second micro-perforated plate (5) and the inner wall of the air outlet box (3), and the two sound insulation rubber plates (7) are separated from each other;
and a porous sound-deadening material (6) is filled between the two sound-deadening rubber plates (7).
8. The mining utility ventilator of claim 6, characterized in that the sixth noise damping and reducing structure comprises:
the first micro-perforated plate (4) is arranged in the middle of the air outlet box (3), and breathable flame-retardant cloth is paved on the surface of the first micro-perforated plate (4);
and the inner side surface of the first micro-perforated plate (4) is filled with a porous sound attenuation material (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122260441.3U CN216044651U (en) | 2021-09-17 | 2021-09-17 | Mining local ventilator with micro-perforated plate combined type noise elimination and reduction structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122260441.3U CN216044651U (en) | 2021-09-17 | 2021-09-17 | Mining local ventilator with micro-perforated plate combined type noise elimination and reduction structure |
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| Publication Number | Publication Date |
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| CN216044651U true CN216044651U (en) | 2022-03-15 |
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ID=80537861
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| CN202122260441.3U Active CN216044651U (en) | 2021-09-17 | 2021-09-17 | Mining local ventilator with micro-perforated plate combined type noise elimination and reduction structure |
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| Country | Link |
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| CN (1) | CN216044651U (en) |
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2021
- 2021-09-17 CN CN202122260441.3U patent/CN216044651U/en active Active
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