Low-resistance wide-band corrosion-resistant air intake and exhaust muffler

Abstract

The utility model discloses a kind of low-resistance wideband corrosion-resistant air intake and exhaust silencer, it is related to silencer technical field, the low-resistance wideband corrosion-resistant air intake and exhaust silencer includes shell, the inner wall of the shell is attached with hydrophobic glass wool, the outside of the hydrophobic glass wool is attached with micro-perforated plate, resistance plate is fixedly installed in the inside of the micro-perforated plate, the shell uses 316L stainless steel, surface sprays polytetrafluoroethylene coating, the inside of the micro-perforated plate and located the outside of resistance plate two sides is equipped with adjusting mechanism. The utility model can change the angle of adjusting plate by the setting of adjusting mechanism, change the angle of noise, so that noise reflection increases, effectively noise energy consumption, improve the effect of silencing, by quick mounting mechanism, flexible pipe is installed with shell conveniently, and flexible pipe is flexible, shape can be changed, it is convenient to connect silencer with air pipe according to demand, improve practicality.

Description

Technical Field

[0001] This utility model relates to the field of silencer technology, specifically a low-resistivity, wideband, corrosion-resistant intake and exhaust silencer. Background Technology

[0002] A silencer is a device installed in the airflow passage of aerodynamic equipment (such as blowers and air compressors) or in the intake and exhaust system to reduce noise. A silencer can block the propagation of sound waves while allowing airflow to pass through. It is an effective tool for controlling noise, and there are many types of silencers.

[0003] Most existing silencers are not adjustable during use, have a fixed noise reduction capacity, are inconvenient to adjust according to wind speed, and have poor corrosion resistance. After long-term use, the inside of the silencer is prone to rust and bacterial growth.

[0004] Based on this, a low-resistivity, wide-bandwidth, corrosion-resistant intake and exhaust silencer is provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this invention is to provide a low-resistivity, wide-bandwidth, corrosion-resistant intake and exhaust silencer to solve the problems in the prior art where it is inconvenient to adjust according to wind speed and where the corrosion resistance is poor.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A low-resistivity, wideband, corrosion-resistant intake and exhaust silencer includes a housing, the inner wall of which is lined with hydrophobic glass wool, the outer side of which is lined with a micro-perforated plate, and an anti-resistant plate is fixedly installed inside the micro-perforated plate. The outer shell is made of 316L stainless steel and coated with polytetrafluoroethylene. Adjustment mechanisms are provided inside the micro-perforated plate and on both sides outside the resistance plate.

[0007] Based on the above technical solutions, this utility model also provides the following optional technical solutions: In one alternative: the adjustment mechanism includes multiple adjustment plates, which are rotatably mounted inside the micro-perforated plate. Each of the multiple adjustment plates is fixedly connected to a second fixing block on one side, and a connecting rod is rotatably mounted between the multiple second fixing blocks. A driving mechanism is provided on the top of two of the adjustment plates.

[0008] In one alternative embodiment: the drive mechanism includes two worm gears, both of which are rotatably mounted on the top of the housing. The bottom ends of both worm gears penetrate the housing and are connected to two of the adjusting plates. Two fixed seats are fixedly mounted on the top of the housing. A worm is rotatably mounted between the two fixed seats, and the worm meshes with the two worm gears. One end of the worm is connected to a motor, and the motor is fixedly mounted to the housing.

[0009] In one alternative: a protective shell is fixedly connected to the top of the housing and outside the motor, and an access door is rotatably installed on the top of the protective shell via a hinge.

[0010] In one alternative: the outer shell is provided with a quick-release mechanism.

[0011] In one alternative: the quick-release mechanism includes a plurality of first fixing blocks, which are fixedly installed on one side of the housing flange, and a locking block is rotatably installed between every two first fixing blocks.

[0012] In one alternative: a flexible tube is fitted to the flange of the housing, and bolts are provided between the housing and the flexible tube.

[0013] In one alternative: a groove is provided on one side of the flexible pipe flange, and the groove is adapted to the locking block; a rubber sealing ring is provided between the outer shell and the flexible pipe.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model can change the angle of the adjustment plate by setting the adjustment mechanism, thereby changing the angle of the noise and increasing the noise reflection, effectively consuming noise energy and improving the sound absorption effect. The quick-installation mechanism makes it easy to install the flexible tube to the shell. The flexible tube is flexible and can change shape, making it easy to connect the silencer to the air duct according to the needs, thus improving its practicality.

[0015] 2. The outer shell of this utility model is made of 316L stainless steel, and the surface is coated with polytetrafluoroethylene, which has the function of corrosion resistance. The nano-hydrophobic treatment makes the glass wool non-absorbent, avoiding fiber powdering or bacterial growth in humid environments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the adjustment mechanism of this utility model.

[0018] Figure 3 This is a schematic diagram of the motor mounting structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the quick-assembly mechanism of this utility model.

[0020] Figure reference numerals: 1. Outer shell; 2. Hydrophobic glass wool; 3. Micro-perforated plate; 4. Resistant plate; 5. Quick-installation mechanism; 51. First fixing block; 52. Locking block; 6. Protective shell; 7. Adjustment mechanism; 71. Adjustment plate; 72. Second fixing block; 73. Connecting rod; 74. Worm gear; 75. Fixing seat; 76. Worm; 77. Motor; 8. Flexible tube; 9. Slot; 10. Bolt; 11. Inspection door. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] In one embodiment, such as Figures 1-4 As shown, a low-resistivity broadband corrosion-resistant air intake and exhaust silencer includes a housing 1, the inner wall of the housing 1 is fitted with hydrophobic glass wool 2, the outer side of the hydrophobic glass wool 2 is fitted with a micro-perforated plate 3, and a resistance plate 4 is fixedly installed inside the micro-perforated plate 3. The outer shell 1 is made of 316L stainless steel and coated with polytetrafluoroethylene. Adjustment mechanisms 7 are provided inside the micro-perforated plate 3 and on both sides outside the resistance plate 4.

[0023] In this embodiment, the micro-perforated plate 3 utilizes microporous friction and acoustic interference to convert sound energy into heat energy, significantly reducing high-frequency noise. The hydrophobic glass wool 2 absorbs mid-to-high-frequency sound waves through its porous structure, achieving a sound absorption coefficient of over 0.8. The nano-hydrophobic treatment prevents the glass wool from absorbing moisture, avoiding fiber pulverization or bacterial growth in humid environments. The resistance plate 4, through abrupt changes in the cross-sectional area of ​​the cavity, induces acoustic impedance mismatch, reflecting specific frequency sound waves. The angle of the adjustment plate 71 can be changed by adjusting the mechanism 7, altering the angle of the noise and increasing noise reflection, effectively consuming noise energy and improving the silencing effect. The quick-installation mechanism 5 facilitates the installation of the flexible tube 8 to the outer shell 1. The flexible tube 8 is flexible and can change shape, making it convenient to connect the silencer to the duct according to needs, thus improving practicality.

[0024] In one embodiment, such as Figure 1 , Figure 2 and Figure 3As shown, the adjustment mechanism 7 includes multiple adjustment plates 71, which are rotatably mounted inside the micro-perforated plate 3. A second fixing block 72 is fixedly connected to one side of each adjustment plate 71. A connecting rod 73 is rotatably mounted between the second fixing blocks 72. A driving mechanism is provided at the top of two of the adjustment plates 71. The driving mechanism includes two worm gears 74, both of which are rotatably mounted on the top of the outer casing 1. The bottom ends of both worm gears 74 penetrate the outer casing 1 and are connected to two of the adjustment plates 71. Two fixing seats 75 are fixedly mounted on the top of the outer casing 1. A worm gear 76 is rotatably mounted and meshes with two worm wheels 74. One end of the worm gear 76 is connected to a motor 77, which is fixedly mounted to the housing 1. When the noise reduction effect needs to be improved, the motor 77 drives the worm gear 76 to rotate. The rotation of the worm gear 76 drives the two worm wheels 74 to rotate, which in turn drives the two adjusting plates 71 to rotate. Due to the setting of the connecting rod 73, all the adjusting plates 71 rotate, changing the angle of the noise and increasing the noise reflection, effectively consuming noise energy and improving the noise reduction effect. When not in use, the motor 77 rotates in the reverse direction, and all the adjusting plates 71 return to their original positions.

[0025] In one embodiment, such as Figure 1 As shown, a protective shell 6 is fixedly connected to the top of the outer shell 1 and outside the motor 77. An inspection door 11 is rotatably installed on the top of the protective shell 6 via a hinge. The inspection door 11 and the protective shell 6 effectively protect the motor 77 and other components. When maintenance or repair is required, the inspection door 11 can be opened for convenient use.

[0026] In one embodiment, such as Figure 1 and Figure 4 As shown, the outer shell 1 is provided with a quick-installation mechanism 5. The quick-installation mechanism 5 includes multiple first fixing blocks 51, which are fixedly installed on one side of the flange of the outer shell 1. A locking block 52 is rotatably installed between every two first fixing blocks 51. A flexible tube 8 is attached to the flange of the outer shell 1. A bolt 10 is provided between the outer shell 1 and the flexible tube 8. A slot 9 is opened on one side of the flange of the flexible tube 8, and the slot 9 is adapted to the locking block 52. A rubber sealing ring is provided between the outer shell 1 and the flexible tube 8. When installing the outer shell 1 and the flexible tube 8, first, the flange of the flexible tube 8 is attached to the flange of the outer shell 1. The locking block 52 is rotated so that the locking block 52 is inserted into the slot 9, which plays a preliminary role in fixing the flexible tube 8. Then, the bolt 10 is used to reinforce the flexible tube 8 and the outer shell 1. The flexible tube 8 is flexible and can change shape, which makes it convenient to connect the silencer and the air duct according to the needs, thus improving practicality.

[0027] The above embodiment discloses a low-resistivity, wideband, corrosion-resistant intake and exhaust silencer. When installing the outer shell 1 and the flexible tube 8, firstly, the flange of the flexible tube 8 is fitted with the flange of the outer shell 1. Then, the locking block 52 is rotated, causing it to engage with the slot 9, providing initial fixation for the flexible tube 8. Bolts 10 are then used to reinforce the flexible tube 8 to the outer shell 1. The flexible tube 8 is flexible and can change shape, facilitating connection of the silencer to the ductwork as needed. The micro-perforated plate 3 utilizes microporous friction and sound wave interference to convert sound energy into heat energy, significantly reducing high-frequency noise. The hydrophobic glass wool 2 absorbs sound through its porous structure. The glass wool absorbs mid-to-high frequency sound waves with a sound absorption coefficient of over 0.8. The nano-hydrophobic treatment prevents the glass wool from absorbing moisture, avoiding fiber pulverization or bacterial growth in humid environments. The resistance plate 4 causes acoustic impedance mismatch through a sudden change in the cross-sectional area of ​​the cavity, reflecting sound waves of a specific frequency. The motor 77 drives the worm gear 76 to rotate, which in turn drives the two worm wheels 74 to rotate. The two worm wheels 74 drive the two adjusting plates 71 to rotate. Due to the setting of the connecting rod 73, all the adjusting plates 71 rotate, changing the angle of the noise and increasing the noise reflection, effectively consuming noise energy and improving the noise reduction effect.

[0028] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A low-resistivity broadband corrosion-resistant air intake and exhaust silencer, comprising a housing (1), wherein the inner wall of the housing (1) is fitted with hydrophobic glass wool (2), the outer side of the hydrophobic glass wool (2) is fitted with a micro-perforated plate (3), and an anti-resistant plate (4) is fixedly installed inside the micro-perforated plate (3). Its features are, The outer shell (1) is made of 316L stainless steel and coated with polytetrafluoroethylene. The micro-perforated plate (3) is provided with adjustment mechanisms (7) on both sides of the outside of the resistant plate (4). The adjustment mechanism (7) includes multiple adjustment plates (71), which are rotatably installed inside the micro-perforated plate (3). A second fixing block (72) is fixedly connected to one side of each of the multiple adjustment plates (71), and a connecting rod (73) is rotatably installed between the multiple second fixing blocks (72). A driving mechanism is provided on the top of two of the adjustment plates (71).

2. The low-resistivity, wideband, corrosion-resistant intake and exhaust silencer according to claim 1, characterized in that, The drive mechanism includes two worm gears (74), both of which are rotatably mounted on the top of the housing (1). The bottom ends of both worm gears (74) penetrate the housing (1) and are connected to two of the adjusting plates (71). Two fixed seats (75) are fixedly mounted on the top of the housing (1). A worm (76) is rotatably mounted between the two fixed seats (75), and the worm (76) meshes with the two worm gears (74). One end of the worm (76) is connected to a motor (77), and the motor (77) is fixedly mounted to the housing (1).

3. The low-resistivity, wideband, corrosion-resistant intake and exhaust silencer according to claim 2, characterized in that, A protective shell (6) is fixedly connected to the top of the outer casing (1) and outside the motor (77), and an inspection door (11) is installed on the top of the protective shell (6) by means of a hinge.

4. The low-resistivity, wideband, corrosion-resistant intake and exhaust silencer according to claim 1, characterized in that, The outer shell (1) is provided with a quick-release mechanism (5).

5. A low-resistivity, wideband, corrosion-resistant intake and exhaust silencer according to claim 4, characterized in that, The quick-installation mechanism (5) includes a plurality of first fixing blocks (51), which are fixedly installed on one side of the flange of the outer shell (1), and a locking block (52) is rotatably installed between every two first fixing blocks (51).

6. A low-resistivity, wideband, corrosion-resistant intake and exhaust silencer according to claim 5, characterized in that, A flexible tube (8) is attached to the flange of the outer shell (1), and a bolt (10) is provided between the outer shell (1) and the flexible tube (8).

7. A low-resistivity, wideband, corrosion-resistant intake and exhaust silencer according to claim 6, characterized in that, A slot (9) is provided on one side of the flange of the flexible tube (8), and the slot (9) is compatible with the locking block (52). A rubber sealing ring is provided between the outer shell (1) and the flexible tube (8).

Images