Internal silencer for mine fan

Abstract

The utility model relates to the technical field of mine fans, and discloses a mine fan internal silencer which comprises a fan shell, a supporting plate is fixedly connected to the inner wall of the fan shell, U-shaped rock wool is arranged on the outer walls of the two sides of the supporting plate, glass cloth is arranged on the outer walls of the U-shaped rock wool, and the U-shaped rock wool is arranged on the outer wall of the glass cloth. A galvanized perforated plate is arranged on the outer wall of the glass cloth, a base plate is arranged on the outer wall of the galvanized perforated plate, air deflectors are arranged on the outer wall of the supporting plate and the outer wall of the U-shaped rock wool, the outer walls of the air deflectors are arranged on the outer wall of the base plate, and a fixing assembly is arranged in the base plate and used for fixing. According to the utility model, through the reasonable punching of the galvanized perforated plate, the sound can be transmitted to the U-shaped rock wool, and the U-shaped rock wool is uniformly filled in the sound absorber frame to reduce the noise generated by the fan, thereby achieving the effect of protecting the hearing and physical and psychological health of workers.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mine fan technical field especially relates to a mine fan inside sound attenuation device. BACKGROUND

[0002] The mine fan is a kind of ventilation equipment specially designed for mine and underground operation environment, mainly used to provide fresh air, discharge harmful gas, and adjust temperature and humidity, to guarantee the safety and health of miner, usually with corrosion-resistant and explosion-proof characteristics, can effectively ventilate and exchange air, reduce the risk of explosion and poisoning, ensure that the working environment in mine is suitable.

[0003] The mine fan is used to reduce noise, to protect the hearing and health of miner, improve working environment, its inside uses sound attenuation device, sound attenuation device can reduce the noise generated when fan operates, improve the working efficiency of miner, avoid potential risk, optimize airflow flow simultaneously, improve the overall performance and safety of ventilation system.

[0004] The existing mine fan usually changes wind direction by air outlet guide baffle, and the power and air pressure and air speed of general mine fan are relatively large, so the noise generated is also relatively large, control room is relatively close to fan, and the relatively large noise generated by fan has great influence on the work and hearing of staff. UTILITY MODEL CONTENT

[0005] In order to make up for the above shortcomings, the utility model provides a kind of mine fan inside sound attenuation device, to improve the problem that the noise generated by fan influences the work and hearing of staff.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0007] A kind of mine fan inside sound attenuation device, including fan shell, the inner wall of the fan shell is fixedly connected with support plate, the outer wall of the both sides of the support plate is provided with U type rock wool, the outer wall of the U type rock wool is provided with glass cloth, the outer wall of the glass cloth is provided with galvanized perforated plate, the outer wall of the galvanized perforated plate is provided with pad, the outer wall of the support plate and U type rock wool is provided with air baffle, the outer wall of the air baffle is provided on the outer wall of pad, the inside of the pad is provided with fixed assembly, and the fixed assembly is used to fix.

[0008] Preferably, the fixed assembly includes self-tapping screw, the outer wall of the self-tapping screw is provided in the inside of pad, the outer wall of the self-tapping screw is provided in the inside of galvanized perforated plate, and the outer wall of the self-tapping screw is provided in the inside of glass cloth and U type rock wool.

[0009] Preferably, the outer wall of the U-shaped rock wool is attached to the front and rear outer walls of the support plate, and the outer walls of the support plate and the glass cloth are both mounted on the two outer walls of the U-shaped rock wool.

[0010] Preferably, the outer wall of the air deflector is arranged on the outer wall of the galvanized perforated plate.

[0011] Preferably, the outer wall of the air deflector is arranged on the outer wall of the glass cloth.

[0012] Preferably, the air deflector is located on the windward side.

[0013] Preferably, the inner wall of the galvanized perforated plate is provided with a hole groove.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the reasonable punching of the galvanized perforated plate is conducive to the sound propagation to the U-shaped rock wool, and the noise generated by the fan is reduced through the uniform filling of the U-shaped rock wool in the sound absorption body frame, thereby achieving the effect of protecting the hearing and physical and mental health of the workers.

[0016] 2. In the utility model, the glass cloth and the U-shaped rock wool are fixed by the self-tapping nails, and the glass cloth has the fireproof effect on the U-shaped rock wool, so that the device can be normally used at high temperature, and the service life is prolonged when the device is used at the outlet of the fan. DRAWINGS

[0017] Figure 1 A perspective view of a fan internal sound attenuation device for a mine is provided in the utility model;

[0018] Figure 2 A Figure 1 enlarged view of position A in the middle;

[0019] Figure 3 A galvanized perforated plate internal structure schematic view of a fan internal sound attenuation device for a mine is provided in the utility model;

[0020] Figure 4 A Figure 3 enlarged view of position B in the middle.

[0021] LEGEND:

[0022] 1. Fan shell; 2. Pad; 3. Galvanized perforated plate; 4. Glass cloth; 5. U-shaped rock wool; 6. Support plate; 7. Self-tapping nail; 8. Air deflector; 9. Hole groove. DETAILED DESCRIPTION

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0024] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application. Figure 1 Figure 2 The present application provides an embodiment: a mine fan internal sound attenuation device, comprising a fan shell 1, the inner wall of the fan shell 1 is fixedly connected with a support plate 6, the outer wall of the support plate 6 is provided with a U-shaped rock wool 5, the outer wall of the U-shaped rock wool 5 is provided with a glass cloth 4, the outer wall of the glass cloth 4 is provided with a galvanized perforated plate 3, the outer wall of the galvanized perforated plate 3 is provided with a backing plate 2, the outer wall of the support plate 6 and the U-shaped rock wool 5 is provided with a wind deflector 8, the outer wall of the wind deflector 8 is arranged on the outer wall of the backing plate 2, the inside of the backing plate 2 is provided with a fixing assembly, and the fixing assembly is used for fixing; the fixing assembly comprises self-tapping screws 7, the outer wall of the self-tapping screws 7 is arranged in the inside of the backing plate 2, the outer wall of the self-tapping screws 7 is arranged in the inside of the galvanized perforated plate 3, and the outer wall of the self-tapping screws 7 is arranged in the inside of the glass cloth 4 and the U-shaped rock wool 5.

[0025] Specifically, the backing plate 2 is fixed to the galvanized perforated plate 3, the glass cloth 4 and the U-shaped rock wool 5 through the self-tapping screws 7, so as to prevent the effect of falling due to external vibration, the fan shell 1 is connected with the support plate 6, so as to play a noise reduction supporting role, the U-shaped rock wool 5 plays a sound absorption and noise reduction role, the glass cloth 4 has high temperature resistance and plays a fireproof role, the self-tapping screws 7 are hexagonal head screws, and when the galvanized perforated plate 3 is fixed, the maximum spacing of the self-tapping screws 7 at the edge of each plate is one hundred millimeters, and the maximum spacing at the middle supporting part is two hundred millimeters.

[0026] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application. Figure 2 The outer wall of the U-shaped rock wool 5 is attached to the front and rear outer walls of the support plate 6, and the outer walls of the support plate 6 and the glass cloth 4 are installed on the two side outer walls of the U-shaped rock wool 5; the outer wall of the wind deflector 8 is arranged on the outer wall of the galvanized perforated plate 3; the outer wall of the wind deflector 8 is arranged on the outer wall of the glass cloth 4; and the wind deflector 8 is located on the windward side.

[0027] Specifically, the wind deflector 8 is located on the windward side, so as to wrap the U-shaped rock wool 5, the support plate 6, the glass cloth 4 and the galvanized perforated plate 3, and protect the internal components from damage, the glass cloth 4 with a thickness of zero point three millimeters is covered on the U-shaped rock wool 5, and the overlap length between the glass cloths 4 should be fifty to one hundred millimeters.

[0028] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application. Figure 3 Figure 4 The inner wall of the galvanized perforated plate 3 is provided with a hole groove 9.​​

[0029] Specifically, the holes in the zinc-plated perforated plate 3 are processed by the hole groove 9 on the inner wall, and the diameter of the holes is 2mm within 1000*1000, which meets the standard and is beneficial to the sound absorption effect.

[0030] Working principle: when using the device, the windward and leeward surfaces of the support plate 6 are chamfered, the front and rear air deflectors 8 are welded with the support plate 6 to achieve the effect of fixation, the U-shaped rock wool 5 is evenly filled in the sound absorption body frame to achieve the effect of noise reduction, the support plate 6 and U-shaped rock wool 5 are arranged every 60 degrees at the center of the fan shell 1 to achieve the effect of reasonable and effective sound absorption of the fan outlet, the self-tapping screw 7 is used to fix the pad 2, zinc-plated perforated plate 3 and glass cloth 4, the sound absorption device is arranged at the fan outlet, the diffuser outlet is provided with a built-in sound absorption device, and the two-stage sound absorption device is installed to make the noise of the fan in the running process reach the optimal state, and the working efficiency of the fan and the physical and mental health of the workers are ensured.

[0031] Finally, it should be pointed out that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A noise reduction device for a mine ventilation fan, comprising a fan housing (1), characterized in that: The inner wall of the fan casing (1) is fixedly connected to a support plate (6). Both sides of the outer wall of the support plate (6) are provided with U-shaped rock wool (5). The outer wall of the U-shaped rock wool (5) is provided with glass cloth (4). The outer wall of the glass cloth (4) is provided with a galvanized perforated plate (3). The outer wall of the galvanized perforated plate (3) is provided with a pad (2). The outer walls of the support plate (6) and the U-shaped rock wool (5) are both provided with air guide plates (8). The outer wall of the air guide plate (8) is provided on the outer wall of the pad (2). The inside of the pad (2) is provided with a fixing component, which is used for fixing.

2. The internal noise reduction device for a mine ventilation fan according to claim 1, characterized in that: The fixing assembly includes a self-tapping screw (7), the outer wall of which is disposed inside the pad (2), the outer wall of which is disposed inside the galvanized perforated plate (3), and the outer wall of which is disposed inside the glass cloth (4) and U-shaped rock wool (5).

3. The internal noise reduction device for a mine ventilation fan according to claim 1, characterized in that: The outer wall of the U-shaped rock wool (5) is attached to the front and rear outer walls of the support plate (6), and the outer walls of the support plate (6) and the glass cloth (4) are both installed on the outer walls of the U-shaped rock wool (5).

4. The internal noise reduction device for a mine ventilation fan according to claim 1, characterized in that: The outer wall of the air guide plate (8) is set on the outer wall of the galvanized perforated plate (3).

5. The internal noise reduction device for a mine ventilation fan according to claim 1, characterized in that: The outer wall of the air guide plate (8) is set on the outer wall of the glass cloth (4).

6. The internal noise reduction device for a mine ventilation fan according to claim 1, characterized in that: The air guide plate (8) is located on the windward side.

7. The internal noise reduction device for a mine ventilation fan according to claim 1, characterized in that: The inner wall of the galvanized perforated plate (3) is provided with slots (9).

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