Sound insulation structure of hoisting axial flow fan

Abstract

The utility model discloses a hoisting axial flow fan sound insulation structure which comprises an axial flow fan, the axial flow fan is arranged in a fan sound insulation cover and is elastically hoisted at the top of a main body structure through a hoisting assembly, the input end and the output end of the axial flow fan are respectively and flexibly connected with an air pipe, and the two air pipes penetrate out of the fan sound insulation cover. And a silencer is arranged on the air pipe. The structure effectively insulates sound from the two angles of air propagation and solid propagation, and noise pollution of the axial flow fan is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of building ventilation, and particularly relates to a sound insulation structure for a hoisted axial flow fan. Background Art

[0002] Ventilation is a building environment control technology that controls the spread and harm of air pollutants by means of ventilation dilution or ventilation removal to ensure the quality of the indoor and outdoor air environment. Mechanical ventilation relies on the air pressure and air volume provided by a fan to send fresh outdoor air or treated air to the required places in the building through a pipeline and air outlet system; it can also directly discharge the polluted air in the building or discharge it to the outside after being treated by a purification device or the like, and is widely used in various civil buildings, transportation facilities such as subway tunnels, and industrial building facilities such as factory mines. When a large fan is used as the power source for ventilation in a mechanical ventilation system, in order to avoid the influence of the fan noise on the environment and personnel, it is generally considered to install the fan in a machine room. However, in special cases, such as when it is difficult to set up a machine room, or to make the pipeline layout of the system more optimized and reasonable, a large fan needs to be hoisted or installed in the service area or other areas where people are active. Since the noise of a large fan is relatively large, generally exceeding the allowable value of the environmental noise standard, the noise pollution will affect people's normal life, work and rest. To reduce the influence of noise on the personnel in this area, a sound insulation device is generally considered to be installed outside the fan. However, the existing sound insulation devices are either complex in structure, or have poor sealing, or are not standardized in production and installation, resulting in poor sound insulation effect, unable to effectively reduce the noise source, and causing great influence on the environment and personnel in the area. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a sound insulation structure for a hoisted axial flow fan, which solves the defects existing in the existing fan sound insulation devices.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A sound insulation structure for a hoisted axial flow fan, including an axial flow fan, the axial flow fan is arranged inside a fan sound insulation cover and is elastically hoisted on the top of the main structure through a hoisting assembly, and flexible ducts are connected to both the input end and the output end of the axial flow fan, and the two ducts penetrate through the fan sound insulation cover, and a muffler is arranged on the ducts.

[0006] Preferably, the hoisting assembly includes a mounting seat and a plurality of elastic suspension rods, the axial flow fan is installed inside the mounting seat, and the mounting seat is suspended on the top of the main structure through the plurality of elastic suspension rods.

[0007] Preferably, the elastic suspension rod includes a suspension rod, a connecting piece, a spring, a connecting rod, a rubber pad and a top connecting piece. The suspension rod is vertically installed at the top of the main structure. A connecting piece is installed at the bottom end of the suspension rod. The bottom of the connecting piece is elastically connected to the connecting rod through a spring. The connecting rod passes through the mounting seat from top to bottom. A top connecting piece is provided at the bottom end of the connecting rod for sealing. A rubber pad is provided between the mounting seat and the top connecting piece.

[0008] Preferably, the connecting piece is in a box shape; the top connecting piece is in a U shape.

[0009] Preferably, the middle part of the connecting rod penetrates through the top surface of the fan sound insulation cover.

[0010] Preferably, the fan sound insulation cover is a box body composed of double-layer gypsum boards, and sound-absorbing cotton is arranged inside the box body.

[0011] Preferably, the fan sound insulation cover includes two side wall through openings and an operation opening. The two side wall through openings are oppositely arranged on the two side walls. The operation opening is arranged on the bottom surface, and a sealing plate is installed at the operation opening.

[0012] Preferably, the sealing plate includes double-layer gypsum boards and sound-absorbing cotton. The sound-absorbing cotton is arranged between the double-layer gypsum boards. The gypsum boards are detachably installed at the operation opening through fasteners.

[0013] Preferably, the air duct and the side wall through opening are sealed with sealant.

[0014] Preferably, the air duct is connected to the input end and the output end of the axial flow fan through hoses.

[0015] In the present utility model, the axial flow fan is directly hung on the top of the main structure through the hoisting assembly, without the need to invest too much cost in building a machine room. The hoisting assembly can realize the elastic hanging of the axial flow fan, effectively buffering the vibration generated during the operation of the axial flow fan and reducing the influence of noise and vibration on the main structure. The fan sound insulation cover is used to seal and wrap the axial flow fan, reducing the air transmission of the noise generated during the operation of the axial flow fan. The whole structure effectively insulates sound from two aspects of air transmission and solid transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a schematic diagram of a partial structure of the present utility model;

[0018] In the figure: 1, axial flow fan; 2, fan sound insulation cover; 3, hoisting assembly; 4, air duct; 5, muffler; 6, sound-absorbing cotton; 7, hose; 30, mounting seat; 31, elastic suspension rod; 20, side wall through-hole; 21, operation port; 22, sealing plate; 310, suspension rod; 311, connecting piece; 312, spring; 313, connecting rod; 314, rubber pad; 315, top connecting piece. Detailed implementation mode

[0019] The following further describes the present utility model in conjunction with the attached drawings:

[0020] As Figure 1 and Figure 2 shown, a hoisting axial flow fan sound insulation structure includes an axial flow fan 1, the axial flow fan 1 is arranged in the fan sound insulation cover 2 and is elastically hoisted at the top of the main structure through the hoisting assembly 3, and the hoisting assembly 3 can buffer the vibration generated during the operation of the axial flow fan 1. Flexible air ducts 4 are connected to both the input end and the output end of the axial flow fan 1, and the two air ducts 4 pass through the fan sound insulation cover 2. Specifically, the air ducts 4 are connected to the input end and the output end of the axial flow fan 1 through hoses 7, and the use of the hoses 7 makes the whole structure more flexible and facilitates the air ducts 4 connected to the input end and the output end to pass through the fan sound insulation cover 2. A muffler 5 is arranged on the air duct 4 to cooperate with the fan sound insulation cover 2 to reduce the overall noise.

[0021] The hoisting assembly 3 includes a mounting seat 30 and multiple elastic suspension rods 31. The axial flow fan 1 is installed in the mounting seat 30, and the mounting seat 30 is suspended at the top of the main structure through multiple elastic suspension rods 31. The elastic suspension rod 31 includes a suspension rod 310, a connecting piece 311, a spring 312, a connecting rod 313, a rubber pad 314 and a top connecting piece 315. The suspension rod 310 is vertically installed at the top of the main structure, a connecting piece 311 is installed at the bottom end of the suspension rod 310, the connecting piece 311 is in a box shape, the bottom of the connecting piece 311 is elastically connected to the connecting rod 313 through the spring 312, the connecting rod 313 passes through the mounting seat 30 from top to bottom, and a top connecting piece 315 is arranged at the bottom end of the connecting rod 313 for blocking. The top connecting piece 315 is in a U shape, and a rubber pad 314 is arranged between the mounting seat 30 and the top connecting piece 315 to reduce the impact of the mounting seat 30 on the connecting rod 313. The middle part of the connecting rod 313 penetrates through the top surface of the fan sound insulation cover 2.

[0022] The fan sound insulation cover 2 is a box body composed of double-layer gypsum boards, and sound-absorbing cotton 6 is arranged in the box body. The fan sound insulation cover 2 includes two side wall through-holes 20 and an operation port 21. The two side wall through-holes 20 are oppositely arranged on the two side walls, the operation port 21 is arranged on the bottom surface, and a sealing plate 22 is installed at the operation port 21.

[0023] The sealing plate 22 includes a double-layer gypsum board and a sound-absorbing cotton 6. The sound-absorbing cotton 6 is arranged in the double-layer gypsum board, and the gypsum board is detachably installed at the operation port 21 through fasteners. Open the sealing plate 22, put the mounting seat 30 into the fan sound insulation cover 2, then pass the bottom of the connecting rod 313 into the fan sound insulation cover 2, then connect the connecting rod 313 and the mounting seat 30, then install the axial flow fan 1 in the mounting seat 30, and finally connect a hose 7 to both the input end and the output end of the axial flow fan 1. The air duct 4 passes through the side wall through-hole 20 and is connected to the hose 7, and the air duct 4 and the side wall through-hole 20 are sealed with sealant.

[0024] The above embodiments are only several descriptions of the concept and implementation of the present invention, and are not intended to limit it. Under the concept of the present invention, the technical solutions without substantial transformation are still within the protection scope.

Claims

1. A sound insulation structure for a hoisted axial flow fan, comprising an axial flow fan (1), characterized in that: The axial flow fan (1) is arranged in a fan sound insulation cover (2) and is elastically suspended on the top of the main structure through a suspension assembly (3); the input end and the output end of the axial flow fan (1) are both flexibly connected to an air duct (4); the two air ducts (4) pass through the fan sound insulation cover (2); and a muffler (5) is arranged on the air duct (4).

2. The sound insulation structure for hoisting axial flow fans according to claim 1 is characterized in that: The hanging assembly (3) comprises a mounting seat (30) and a plurality of elastic hanging rods (31); an axial flow fan (1) is installed in the mounting seat (30); and the mounting seat (30) is hung on the top of the main structure via the plurality of elastic hanging rods (31).

3. The sound insulation structure for a hoisted axial flow fan according to claim 2 is characterized in that: The elastic suspension rod (31) comprises a suspension rod (310), a connecting piece (311), a spring (312), a connecting rod (313), a rubber pad (314) and a top connection piece (315). The suspension rod (310) is vertically mounted on the top of the main structure. The connecting piece (311) is mounted at the bottom end of the suspension rod (310). The bottom of the connecting piece (311) is elastically connected to the connecting rod (313) via the spring (312). The connecting rod (313) passes through the mounting seat (30) from top to bottom. A top connection piece (315) is arranged at the bottom end of the connecting rod (313) for sealing. A rubber pad (314) is arranged between the mounting seat (30) and the top connection piece (315).

4. The sound insulation structure for a hoisted axial flow fan according to claim 3 is characterized in that: The connecting piece (311) is box-shaped; and the top connecting piece (315) is U-shaped.

5. The sound insulation structure for a hoisted axial flow fan according to claim 3 is characterized in that: The middle portion of the connecting rod (313) passes through the top surface of the fan sound insulation cover (2).

6. The sound insulation structure for a hoisted axial flow fan according to claim 1 or 5, characterized in that: The fan sound insulation cover (2) is a box body composed of a double-layer gypsum board, and sound-absorbing cotton (6) is arranged inside the box body.

7. The sound insulation structure for a hoisted axial flow fan according to claim 6, characterized in that: The fan sound insulation cover (2) comprises two side wall through-openings (20) and an operation opening (21); the two side wall through-openings (20) are arranged on two side walls opposite to each other; the operation opening (21) is arranged on the bottom surface; and a sealing plate (22) is installed at the operation opening (21).

8. The sound insulation structure for a hoisted axial flow fan according to claim 7, characterized in that: The sealing plate (22) comprises a double-layer gypsum board and sound-absorbing cotton (6), wherein the sound-absorbing cotton (6) is arranged on the double-layer gypsum board, and the gypsum board is detachably mounted on the operating port (21) via fasteners.

9. The sound insulation structure for a hoisted axial flow fan according to claim 7, characterized in that: The air duct (4) and the side wall through-opening (20) are sealed by means of a sealant.

10. The sound insulation structure for a hoisted axial flow fan according to claim 1, characterized in that: The air duct (4) is connected to the input end and the output end of the axial flow fan (1) via a hose (7).

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