Air inlet silencing structure

Abstract

The utility model discloses an air inlet noise reduction structure, and particularly relates to the technical field of noise reduction structures, the air inlet noise reduction structure comprises a noise reduction pipeline, one end of the noise reduction pipeline is fixedly connected with a fan pipeline, one end of the fan pipeline is fixedly connected with an air inlet pipeline, an exhaust fan is installed in the fan pipeline, and a noise reduction mechanism is arranged between the noise reduction pipeline and the air inlet pipeline. The noise reduction mechanism is arranged, the noise reduction pipeline is used for sound insulation and noise reduction at the air outlet, the rubber gasket and the protective sleeve on the outer side of the noise reduction pipeline are used for reducing vibration of the whole air inlet caused by rapid circulation of air flow and working of the exhaust fan, and therefore the noise reduction effect is achieved, and meanwhile sound insulation and noise reduction are achieved through the sound insulation gasket. Part of noise is collided and counteracted through the left silencing plate and the right silencing plate, the noise reduction effect is further improved, noise and vibration generated during equipment operation are reduced, abrasion and damage of the equipment are reduced, and therefore the service life of the equipment is prolonged, and the working environment of workers is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of noise reduction structures, and more specifically, to an air inlet noise reduction structure. Background Art

[0002] The air inlet is one of the ventilation facilities used to introduce external air into a building or equipment. It is usually installed on the exterior wall of a building or on the side of a device to introduce fresh air into the room or equipment to maintain air quality, adjust temperature and humidity, and reduce pollutant concentrations.

[0003] After searching, a Chinese patent with publication number CN219974911U discloses an air inlet for a fan. In view of the problem that when the existing fan is in use, dust and impurities in the air enter the fan through the air inlet. Over time, the dust and impurities are retained and accumulated in the fan, which will affect the normal use of the fan. A retaining spring will push the limit arc block into the limit hole of the limit block, so that the filter net is fixedly installed at the air inlet, and the filter net continues to filter the dust and impurities in the air, thereby filtering the dust and impurities in the air, avoiding the dust and impurities from being retained and accumulated in the fan, and ensuring the normal use of the fan.

[0004] However, during the use of the fan inlet, the fan will vibrate when it is working, and the high air flow velocity at the fan inlet causes it to generate a lot of noise. At the same time, the existing partial silencer structure has limited silencer effect, which has an adverse effect on the working environment of workers. Utility Model Content

[0005] In order to overcome the problems and defects in the prior art, the utility model provides an air inlet silencer structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an air inlet silencer structure, comprising a silencer pipe, one end of the silencer pipe is fixedly connected to a fan pipe, one end of the fan pipe is fixedly connected to an air inlet pipe, an exhaust fan is installed inside the fan pipe, a silencer and noise reduction mechanism is arranged between the silencer pipe and the air inlet pipe, and a disassembly mechanism is arranged between the silencer pipe and the fan pipe;

[0007] The sound-absorbing and noise-reducing mechanism includes a protective sleeve, which is fixedly mounted on the outside of the sound-absorbing pipe. The top and bottom of the inner wall of the sound-absorbing pipe are fixedly connected with fixed baffles. The top of the inner wall of the sound-absorbing pipe away from the fixed baffle is fixedly connected with a right sound-absorbing plate. The top of the inner wall of the sound-absorbing pipe close to the right sound-absorbing plate is fixedly connected with a left sound-absorbing plate. The inner walls of the sound-absorbing pipe, the fan pipe and the air inlet pipe are fixedly connected with rubber gaskets, and the inner walls of the rubber gaskets are adhered with sound insulation gaskets.

[0008] Preferably, the disassembly and assembly mechanism comprises two fixed shells, which are respectively fixed on the front and rear sides of the silencer duct, a through sliding hole is opened on one surface of the fixed shell, and the front and rear sides of the fan duct are fixedly connected with fixed sleeves.

[0009] Preferably, a moving rod is slidably connected inside the through sliding hole, a moving clamping plate is fixedly connected to one end of the moving rod, and threaded holes are provided on the front surfaces of the moving clamping plate and the fixed sleeve.

[0010] Preferably, a fixing bolt is disposed inside the threaded hole, and the fixing bolt is threadedly connected to the threaded hole.

[0011] Preferably, a connecting spring is sleeved on the outer side of the moving rod, one end of the connecting spring is fixedly connected to the moving clamping plate, and the other end of the connecting spring is fixedly connected to one side of the inner wall of the fixed shell.

[0012] Preferably, the protective sleeve is made of rubber, the fixed baffle is made of polyurethane, and the silencer pipe is made of aluminum.

[0013] Preferably, the inner diameters of the fan duct and the air inlet duct are the same as the inner diameter of the silencer duct, and the sound insulation gasket is made of sound insulation cotton.

[0014] Technical effects and advantages of the utility model:

[0015] 1. By setting up a silencer and noise reduction mechanism, the silencer pipe is used to perform sound insulation and noise reduction at the air outlet. The silencer pipe, the rubber gasket inside the fan pipe and the air inlet pipe and the protective cover outside the silencer pipe are used to reduce the vibration of the overall air inlet due to the rapid circulation of air and the operation of the exhaust fan, thereby achieving a noise reduction effect. At the same time, the sound insulation gasket is used to perform sound insulation and noise reduction. The left and right silencer plates are used to make some noises collide and offset each other, further improving the noise reduction effect, reducing the noise and vibration during the operation of the equipment, reducing the wear and damage of the equipment, thereby extending the service life of the equipment and improving the working environment of the staff;

[0016] 2. By setting up a disassembly and assembly mechanism, the mobile card is inserted into the fixed sleeve and then screwed into the threaded hole through the fixing bolt to complete the installation of the silencer duct and the fan duct. Compared with the traditional flange installation method, it is simpler and more convenient, easy to disassemble, and convenient for maintenance personnel to clean, inspect or replace the silencer duct or fan duct, reducing maintenance time and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of xx of the utility model.

[0018] Figure 2 It is a side structural schematic diagram of the utility model.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the silencer pipe of the utility model.

[0020] Figure 4 It is a schematic diagram of the disassembly and assembly mechanism structure of the utility model.

[0021] Figure 5 It is a front cross-sectional structural schematic diagram of the utility model.

[0022] Figure 6 It is a side structural schematic diagram of the utility model.

[0023] The accompanying drawings are marked as follows: 1. Silencer duct; 2. Fan duct; 3. Air inlet duct; 4. Exhaust fan; 5. Protective cover; 6. Fixed baffle; 7. Right silencer plate; 8. Left silencer plate; 9. Rubber gasket; 10. Sound insulation gasket; 11. Fixed shell; 12. Through sliding hole; 13. Moving rod; 14. Connecting spring; 15. Moving clamping plate; 16. Fixed sleeve; 17. Threaded hole; 18. Fixing bolt. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] As attached Figure 1-6 An air inlet silencer structure shown includes a silencer pipe 1, one end of the silencer pipe 1 is fixedly connected to a fan pipe 2, one end of the fan pipe 2 is fixedly connected to an air inlet pipe 3, an exhaust fan 4 is installed inside the fan pipe 2, a silencer and noise reduction mechanism is provided between the silencer pipe 1 and the air inlet pipe 3, and a disassembly mechanism is provided between the silencer pipe 1 and the fan pipe 2;

[0026] The sound-absorbing and noise-reducing mechanism includes a protective sleeve 5, which is fixedly mounted on the outside of the sound-absorbing pipe 1. Fixed baffles 6 are fixedly connected to the top and bottom of the inner wall of the sound-absorbing pipe 1. A right sound-absorbing plate 7 is fixedly connected to the top of the inner wall of the sound-absorbing pipe 1 away from the fixed baffle 6. A left sound-absorbing plate 8 is fixedly connected to the top of the inner wall of the sound-absorbing pipe 1 close to the right sound-absorbing plate 7. The inner walls of the sound-absorbing pipe 1, the fan pipe 2 and the air inlet pipe 3 are fixedly connected to rubber gaskets 9, and sound insulation gaskets 10 are adhered to the inner walls of the rubber gaskets 9.

[0027] As attached Figure 1 , 2As shown in , 3, 4, and 6, the disassembly and assembly mechanism includes two fixed shells 11, and the two fixed shells 11 are respectively fixed on the front and rear sides of the silencer duct 1. A through sliding hole 12 is provided on one side surface of the fixed shell 11, and a fixed sleeve 16 is fixedly connected to the front and rear sides of the fan duct 2. A moving rod 13 is slidably connected inside the through sliding hole 12, and a moving clamping plate 15 is fixedly connected to one end of the moving rod 13. Threaded holes 17 are provided on the front side surfaces of the moving clamping plate 15 and the fixed sleeve 16, and a fixing bolt 18 is arranged inside the threaded hole 17, and the fixing bolt 18 is threadedly connected to the threaded hole 17. A connecting spring 14 is sleeved on the outer side of the moving rod 13, and one end of the connecting spring 14 is fixedly connected to the moving clamping plate 15, and the other end of the connecting spring 14 is fixedly connected to one side of the inner wall of the fixed shell 11, so as to facilitate the installation and disassembly between the silencer duct 1 and the fan duct 2, and to facilitate the repair, maintenance and cleaning of the silencer duct 1 and the fan duct 2.

[0028] As attached Figure 1-5 As shown, the protective cover 5 is made of rubber, the fixed baffle 6 is made of polyurethane, the silencer pipe 1 is made of aluminum, the inner diameters of the fan pipe 2 and the air inlet pipe 3 are the same as the inner diameter of the silencer pipe 1, and the sound insulation gasket 10 is made of sound insulation cotton, thereby improving the sound insulation and noise reduction effect of the overall air inlet.

[0029] Working principle of the utility model: During the use of the air inlet silencer structure provided by the utility model, the silencer pipe 1 is first installed to one side of the fan pipe 2, and the silencer pipe 1 is aligned with the fan pipe 2, so that the movable card plate 15 is aligned with the inside of the fixed sleeve 16, and then the movable card plate 15 is inserted into the fixed sleeve 16. At the same time, since the surfaces of the fixed sleeve 16 and the movable card plate 15 are both provided with threaded holes 17, the fixing bolts 18 are then screwed into the threaded holes 17 to complete the installation of the silencer pipe 1 and the fan pipe 2. After the exhaust fan 4 is started, air flows in through one end of the silencer pipe 1 and passes through the silencer pipe 1 The rubber gaskets 9 on the inner walls of the fan duct 2 and the air inlet duct 3 buffer the vibration caused by the air circulation, and the protective cover 5 on the outside of the silencer duct 1 buffers the vibration of the silencer duct 1, thereby effectively reducing the noise generated by the vibration of the entire duct due to the air flow, and improving its silencing and noise reduction effect. At the same time, the airflow enters the silencer duct 1 and is soundproofed by the sound insulation gasket 10, further improving its silencing effect. At the same time, the noise contacting the left silencer plate 8 and the noise contacting the right silencer plate 7 collide and cancel each other, further improving the noise reduction effect. At the same time, the fixed baffle 6 prevents a large amount of noise from rebounding and overflowing.

[0030] Finally: The above embodiments are only illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. An air inlet silencing structure, comprising a silencing duct (1), characterized in that: One end of the silencer pipe (1) is fixedly connected to a fan pipe (2), one end of the fan pipe (2) is fixedly connected to an air inlet pipe (3), an exhaust fan (4) is installed inside the fan pipe (2), a silencer and noise reduction mechanism is provided between the silencer pipe (1) and the air inlet pipe (3), and a disassembly mechanism is provided between the silencer pipe (1) and the fan pipe (2); The muffler and noise reduction mechanism comprises a protective sleeve (5), the protective sleeve (5) is fixedly mounted on the outside of the muffler pipe (1), the top and bottom of the inner wall of the muffler pipe (1) are fixedly connected to fixed baffles (6), the top of the inner wall of the muffler pipe (1) away from the fixed baffle (6) is fixedly connected to a right muffler plate (7), the top of the inner wall of the muffler pipe (1) close to the right muffler plate (7) is fixedly connected to a left muffler plate (8), the inner walls of the muffler pipe (1), the fan pipe (2) and the air inlet pipe (3) are fixedly connected to rubber gaskets (9), and the inner walls of the rubber gaskets (9) are adhered to sound insulation gaskets (10).

2. The air inlet silencing structure according to claim 1, characterized in that: The disassembly and assembly mechanism comprises two fixed shells (11), the two fixed shells (11) are respectively fixed to the front side and the rear side of the silencer duct (1), a through sliding hole (12) is provided on one side surface of the fixed shell (11), and the front side and the rear side of the fan duct (2) are both fixedly connected with fixed sleeves (16).

3. The air inlet silencing structure according to claim 2, characterized in that: A moving rod (13) is slidably connected inside the through sliding hole (12), and a moving clamping plate (15) is fixedly connected to one end of the moving rod (13). The front surfaces of the moving clamping plate (15) and the fixed sleeve (16) are both provided with threaded holes (17).

4. The air inlet silencing structure according to claim 3, characterized in that: A fixing bolt (18) is arranged inside the threaded hole (17), and the fixing bolt (18) is threadedly connected to the threaded hole (17).

5. The air inlet silencing structure according to claim 3, characterized in that: A connecting spring (14) is sleeved on the outer side of the moving rod (13); one end of the connecting spring (14) is fixedly connected to the moving clamping plate (15); and the other end of the connecting spring (14) is fixedly connected to one side of the inner wall of the fixed shell (11).

6. The air inlet silencing structure according to claim 1, characterized in that: The protective sleeve (5) is made of rubber, the fixed baffle (6) is made of polyurethane, and the silencer pipe (1) is made of aluminum.

7. The air inlet silencing structure according to claim 1, characterized in that: The inner diameters of the fan duct (2) and the air inlet duct (3) are the same as the inner diameter of the silencer duct (1), and the sound insulation gasket (10) is made of sound insulation cotton.

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