CN212106329U - Silencing room of air heater - Google Patents

Abstract

The utility model discloses an air heater silencing room, which comprises a silencing fan chamber, a silencing hot air chamber and a U-shaped silencer, wherein a partition wall is arranged between the silencing fan chamber and the silencing hot air chamber; the ventilation inlet of U type muffler sets up in the hot-blast indoor of amortization, and the air pipe of U type muffler buries underground in sand, and the ventilation outlet of U type muffler sets up the outside in amortization room. The utility model discloses the circular muffler of air exit installation of fan carries out the amortization for the first time to the noise that the fan produced, buries the air pipe of U type muffler underground in sand, both can further the noise elimination, and the natural damping effect of accessible soil realizes the decay to fan mechanical vibration again.

Description

Silencing room of air heater

The technical field is as follows:

the utility model belongs to the environmental protection facility field, concretely relates to air heater amortization room.

Background art:

various industrial processes always use various fans, and the operation of the fans generates noise. Particularly, with the explosive growth of the urban scale, a plurality of industrial old areas are quickly surrounded by residential areas in recent years, and the appearance of the noise standard of a new factory boundary causes that a plurality of old fans and air heaters in a factory cannot run up to the standard. The prior art has tried a variety of noise reduction measures in sequence: if install the fan room additional outside the fan, install the fan below ground etc. these modes or noise reduction effect is unsatisfactory, or controlled the noise but cause the fan fault rate to rise, the reliability descends.

In the conventional fan room, as shown in fig. 1, hot air exhausted by a heating device is directly exhausted into the fan room, and heat is taken out of the room by natural convection of a door and a window of the fan room. On one hand, the noise of the air heater chamber can not reach the standard, and because the air heater chamber is provided with doors and windows and is directly communicated with the atmospheric environment, the noise of the high-speed air heater (generally reaching about 80-90 dB) is almost directly discharged out of the room, so that the noise of the surrounding environment exceeds the standard and the noise can not reach the standard; on the other hand, the internal temperature of the hot air blower room is difficult to control, because the heat generated by the operation of the equipment is directly discharged into the air blower room by the air blower, the temperature in the air blower room is continuously increased, and the continuous operation of the motor of the draught fan generates heat, particularly, the temperature of the air blower room is continuously overhigh in hot summer, the actually measured temperature can reach more than 60 ℃, the operation environment of the motor of the draught fan is poor, the high temperature has serious damage to the bearing of the motor of the draught fan, especially, the bearing lubricating grease is dried, the lubricating effect is reduced, the motor, the air blower and the bearing thereof are frequently damaged, the faults are increased, and great troubles are brought to the safe.

The utility model has the following contents:

an object of the utility model is to overcome above-mentioned prior art's shortcoming, provide an air heater amortization room, this air heater amortization room can control ambient noise, can reduce fan operating temperature again, guarantees the high-efficient reliable operation of fan, has both improved the influence of mill's all ring edge border ambient noise, has improved the reliability of fan equipment operation again, realizes better environmental benefit and economic benefits.

The utility model aims at solving through the following technical scheme: a silencing room of an air heater comprises a silencing fan chamber, a silencing hot air chamber and a U-shaped silencer, wherein a partition wall is arranged between the silencing fan chamber and the silencing hot air chamber; the ventilation inlet of the U-shaped silencer is arranged in the silencing hot air chamber, the ventilation pipeline of the U-shaped silencer is buried in sandy soil, the ventilation outlet of the U-shaped silencer is arranged outside the silencing room, and the ventilation outlet is provided with a hood; the silencing fan chamber and the silencing hot air chamber are both provided with doors, and the silencing fan chamber is also provided with a shutter air port.

Furthermore, the peripheral wall bodies of the silencing room are made of porous silencing walls, galvanized iron sheets are adopted on the outer surfaces of the wall bodies, aluminum pore plates are arranged on the inner surfaces of the wall bodies, and composite glass fiber soundproof cotton and fireproof glass fiber cloth are filled in the interlayer.

Furthermore, the partition wall is made of heat-insulating and sound-absorbing materials.

The beneficial effects of the utility model reside in that:

1. the utility model discloses at the circular muffler of air exit installation of fan, carry out the amortization for the first time to the noise that the fan produced, most noise can be reduced to this process, for the noise that further elimination fan noise and heat source equipment mechanical oscillation produced, design second section U type muffler, bury the air pipe of U type muffler underground in sand, both can strengthen the noise cancelling effect of muffler itself, can realize the decay to fan mechanical oscillation again through the natural damping effect of soil.

2. The utility model discloses be provided with the partition wall between amortization fan room and the amortization hot-blast room, the partition wall adopts thermal-insulated sound absorbing material to make hot-blast intensification effect to amortization fan room fall to minimum, the effective control fan room temperature.

3. The utility model discloses independent amortization fan room and amortization hot-blast room structure separately, better solution the too high problem of amortization fan room temperature that hot-blast leads to. The structure of the independent silencing hot air chamber, such as the surrounding walls and the top of the silencing hot air chamber are all porous plates, and the noise of the equipment and the fan is reduced again. Finally, the hot air passes through a U-shaped silencer, so that the noise intensity is obviously reduced after the hot air passes through three silencing links.

Description of the drawings:

fig. 1 shows a conventional fan room.

Fig. 2 is a top view of the silencing room of the air heater of the present invention.

Fig. 3 is a cross-sectional view of B-B in fig. 2.

Fig. 4 is a cross-sectional view a-a of fig. 2.

Description of reference numerals: 1-fan chamber, 2-fan room door, 3-window, 4-fan, 6-air suction opening, 5-air pipe, 7-round silencer, 8-silencing fan chamber, 9-silencing hot air chamber, 10-U type silencer, 11-partition wall, 12-hood, 13-louver air opening, 14-peripheral wall of silencing room and 15-top of silencing room.

The specific implementation mode is as follows:

the present invention will be described in further detail with reference to the accompanying drawings:

as shown in 2-4, the air heater silencing room comprises a silencing fan chamber 8, a silencing hot air chamber 9 and a U-shaped silencer 10, wherein a partition wall 11 is arranged between the silencing fan chamber 8 and the silencing hot air chamber 9, the fan 4 is installed in the silencing fan chamber 8, an air suction opening 6 of the fan is arranged outside the silencing fan chamber 8 through an air pipe 5, a round silencer 7 is installed at an air outlet of the fan 4, and one end of the round silencer 7 penetrates through the partition wall 11 and is arranged in the silencing hot air chamber 9; the ventilation inlet of the U-shaped silencer 10 is arranged in the silencing hot air chamber 9, the ventilation pipeline of the U-shaped silencer 10 is buried in sandy soil, the ventilation outlet of the U-shaped silencer is arranged outside the silencing room, and the ventilation outlet is provided with a hood 12; the silencing fan chamber 8 and the silencing hot air chamber 9 are both provided with doors, and the silencing fan chamber 8 is also provided with a louver opening 13.

The flow of building the utility model discloses amortization room does: adopting concrete to build a fan base, digging a tunnel embedded with a U-shaped silencer, adopting concrete to treat a foundation, building a silencing room, embedding the U-shaped silencer and restoring the ground of the tunnel, installing a cooling fan and a fan (two bidirectional cooling fans are installed in a silencing fan chamber) in an operating room, spraying paint on the outside of the silencing room for rust prevention, and building a rainproof color steel tile.

The fan of the utility model is a high-pressure centrifugal fan, and the diameter of the wind pipe 5 is 360 mm; the inner diameter of the round silencer 7 is 300mm, and the length is 100 mm; the U-shaped silencer 10 has an inner diameter of 600mm, which is twice the inner diameter of a circular silencer.

The outer surfaces of the peripheral wall bodies 14 of the sound attenuation room are made of galvanized iron sheets, and the thickness of the galvanized iron sheets is 1.5 mm; the inner surface of the wall body is an aluminum pore plate with the thickness of 1.5mm, the inner diameter of the pore is 4mm, and the center distance of the pores is 6 mm; the interlayer is filled with composite glass fiber soundproof cotton and fireproof glass fiber cloth, and the thickness is 200 mm. The top 15 of amortization room is aluminium orifice plate, combined type glass fiber soundproof cotton and rain-proof various steel tile from inside to outside in proper order, and the thickness is 4mm, 150mm, 50mm respectively.

As shown in fig. 2-3 the utility model discloses two fans 4 are installed to amortization fan room 8 in amortization room, and during operation, 4 exhaust hot-blast of fan loop through circular muffler 7, amortization hot-blast room 9 and U type muffler 10, finally get rid of the amortization room, and hot-blast process three amortization links to and the unique structure in amortization room, all adopt the perforated plate like wall body and top all around the amortization room, make noise intensity obviously descend. The noise detectors are used for detecting the positions of the east, the west and the north of the sound-deadening house, which are 1 meter away from the sound-deadening house, respectively, the noise is less than 60db, and the technical requirement that the noise is less than 60db is met.

Claims (4)

1. The utility model provides a hot-blast machine amortization room which characterized in that: the silencer is characterized by comprising a silencing fan chamber (8), a silencing hot air chamber (9) and a U-shaped silencer (10), wherein a partition wall (11) is arranged between the silencing fan chamber (8) and the silencing hot air chamber (9), a fan (4) is installed in the silencing fan chamber (8), a suction opening (6) of the fan is arranged outside the silencing fan chamber (8) through an air pipe (5), a circular silencer (7) is installed at an air outlet of the fan (4), and one end of the circular silencer (7) penetrates through the partition wall (11) and is arranged in the silencing hot air chamber (9); the ventilation inlet of the U-shaped silencer (10) is arranged in the silencing hot air chamber (9), the ventilation pipeline of the U-shaped silencer (10) is buried in sandy soil, the ventilation outlet of the U-shaped silencer (10) is arranged outside the silencing room, and the ventilation outlet is provided with a hood (12); the silencing fan chamber (8) and the silencing hot air chamber (9) are both provided with doors, and the silencing fan chamber (8) is also provided with a shutter air port (13).

2. The muffling room of the hot air blower of claim 1, wherein: porous noise reduction walls are adopted on peripheral walls of the noise reduction room, galvanized iron sheets are adopted on the outer surfaces of the walls, aluminum pore plates are arranged on the inner surfaces of the walls, and composite glass fiber soundproof cotton and fireproof glass fiber cloth are filled in the interlayer.

3. The muffling room of the hot air blower of claim 1, wherein: the top of the sound attenuation room is provided with an aluminum pore plate, composite glass fiber soundproof cotton and a rain-proof color steel tile from inside to outside in sequence.

4. The muffling room of the hot air blower of claim 1, wherein: the silencing fan chamber is also provided with a cooling fan.

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