High-efficiency star-shaped cross-section array muffler

Abstract

The utility model discloses a kind of high-efficiency star cross-section array mufflers, the utility model relates to ventilation engineering technical field, including muffler body, the one end of the muffler body is provided with adjusting mechanism, the one end of the muffler body is provided with protective shell in front, the bottom of the muffler body is provided with bottom plate.The high-efficiency star cross-section array muffler, the cross-sectional shape of the sound-absorbing plate is star-shaped, 2 more than the traditional square cross-sectional structure, can guarantee the same ventilation area, the greater the sound-absorbing surface area, with higher unit length sound-absorbing amount, more efficient, make adjusting plate be in inclined state, reduce air intake at night, prolong the service life of sound-absorbing plate, if in other period, make baffle be in inclined state, but greater than the inclination angle of adjusting plate at night, avoid the " straight rush type " impact, guarantee the installation stability of sound-absorbing plate, to improve the service life, stability and sound-absorbing amount of sound-absorbing plate.

Description

Technical Field

[0001] This utility model relates to the field of ventilation engineering technology, specifically to a high-efficiency star-shaped cross-section array silencer. Background Technology

[0002] With the rapid development of underground transportation such as subways and tunnels, the demand for noise pollution control in underground spaces is increasing. This has led to a growing demand for array-type silencers used in subways and tunnels. As the economy recovers in the post-pandemic era, the market demand for more refined subway construction, coupled with the continuous development of environmental control systems, is placing increasingly higher requirements on array-type silencers.

[0003] A search of patent application number CN202021962219.7 reveals an array-type silencer. This utility model, through the setting of a silencer column mechanism, allows for the replacement of internal sound-absorbing materials, making operation simple. It includes longitudinal and transverse adjustment mechanisms to adjust the distance between the silencer columns, thereby meeting the noise reduction requirements of different characteristics. When using this silencer, the influence of different sizes on the flow area should be considered in the selection of the number of silencer units. This requires our array-type silencer to have a higher noise reduction per unit length. Furthermore, during use, because it is installed in subways and tunnels, the stability and lifespan of the internal sound-absorbing plates cannot be guaranteed, leading to inefficient use.

[0004] Further searching patent application number CN201520457866.5 reveals an array-type silencer. Noise enters the intake shroud through the horn-shaped intake manifold, achieving primary noise reduction. It then enters the outlet shroud through airflow holes on the first partition plate, achieving secondary noise reduction. Inward protrusions on the outlet shroud increase the contact area between the airflow and the noise-absorbing layer, improving the noise reduction effect. Noise-absorbing plates are installed inside the outlet shroud to absorb noise. This invention has good noise reduction performance. However, when selecting the number of silencer units, the influence of different sizes on the flow area should be considered. This requires our array-type silencer to have a higher noise reduction per unit length. Furthermore, during use, because it is installed in subways and tunnels, the stability and lifespan of the internal noise-absorbing plates cannot be guaranteed, leading to inefficient use. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a high-efficiency star-shaped cross-section array silencer. The silencer plate has a star-shaped cross-section, with two more sections than the traditional square cross-section structure, ensuring the same ventilation area while significantly increasing the perimeter of the silencing surface. For materials with the same silencing coefficient, a larger silencing surface area results in greater silencing capacity. Therefore, this star-shaped cross-section array silencer has a higher silencing capacity per unit length, making it more efficient. Furthermore, an adjustable plate is installed at the silencer plate, allowing it to be tilted. This reduces the airflow at night, preventing excessive erosion and wear of the silencing material by high-speed airflow and extending the lifespan of the silencer plate. At other times... The section allows the baffle to be tilted, but at a greater angle than the nighttime adjustment plate. This provides more airflow than at night to meet peak demand. When the airflow passes through the tilted adjustment plate, it moves along the tilt direction, avoiding "direct impact" and reducing the impact on the silencer plate. This ensures the installation stability of the silencer plate and allows for efficient use. It also solves the problem of considering the impact of different sizes on the flow area when selecting the number of silencer units. This requires our array silencer to have a higher noise reduction per unit length. Furthermore, during use, the stability and lifespan of the silencer plate inside the silencer cannot be guaranteed when installed in subways and tunnels, resulting in inefficient use.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a high-efficiency star-shaped cross-section array silencer, including a silencer body, an adjustment mechanism provided at one end of the silencer body, a protective shell provided on the front of one end of the silencer body, a base plate provided at the bottom of the silencer body, and the base plate in contact with the silencer body, and a fixing rod fixedly provided at the bottom of the base plate.

[0007] The adjustment mechanism includes a mounting plate, an adjustment plate on one side of the mounting plate, and multiple adjustment plates arranged vertically and collinearly. An annular plate is fixedly installed on one side of the muffler body, and the annular plate is in contact with the adjustment plate. A motor is installed inside the protective shell, and a threaded rod is installed at the end of the motor's output shaft. A rotating rod is fixedly installed at one end of each adjustment plate. A lifting plate is installed on one side of the motor. A sound-absorbing plate is inlaid on the surface of the mounting plate, and the cross-sectional shape of the sound-absorbing plate is star-shaped.

[0008] Preferably, the mounting plate is located inside one end of the muffler body, and the muffler plate is made of a sound-absorbing material component.

[0009] Preferably, a first toothed rail is provided on the side of the lifting plate near the rotating rod, and a second toothed rail is provided on one side of the first toothed rail.

[0010] Preferably, the second toothed rail is fixedly connected to the rotating rod, and the first toothed rail meshes with the second toothed rail.

[0011] Preferably, a crossbar is fixedly provided on the side of the lifting plate away from the rotating rod, and the threaded rod passes through the crossbar and is threadedly connected to the crossbar.

[0012] Preferably, both ends of the fixing rod are provided with connecting rods, and the bottom end of the connecting rod is fixedly provided with a support plate, and the cross-sectional shape of the support plate is U-shaped.

[0013] Preferably, a connecting spring is provided on one side of the support plate, and a limiting rod is fixedly provided at the top end of the connecting rod.

[0014] Preferably, one end of the limiting rod extends into the interior of the muffler body and contacts the muffler body, and the front and back of the base plate are provided with grooves, and one end of the limiting rod is adapted to the grooves.

[0015] Beneficial effects This invention provides a high-efficiency star-shaped cross-section array silencer. Compared with the prior art, it has the following advantages: 1. This high-efficiency star-shaped cross-section array silencer features a star-shaped cross-section for the silencer panels, which has two more sections than the traditional square cross-section structure. While maintaining the same ventilation area, it significantly increases the perimeter of the silencing surface. For materials with the same silencing coefficient, a larger silencing surface area results in greater silencing capacity. Therefore, this star-shaped cross-section array silencer has a higher silencing capacity per unit length, making it more efficient. An adjustable plate is installed at the silencer panel, allowing it to be tilted. At night, this reduces the airflow, preventing excessive erosion and wear of the silencing material by high-speed airflow and extending the lifespan of the silencer panels. At other times, the plate is tilted, but at a greater angle than the nighttime adjustable plate, providing more airflow to meet peak demand. When airflow passes over the tilted plate, it moves along the tilt direction, avoiding direct impact and reducing the impact on the silencer panels, ensuring installation stability and efficient use.

[0016] 2. This high-efficiency star-shaped cross-section array silencer moves by moving the support plate, which in turn moves the connecting rod and the upper limiting rod. This allows the limiting rod to separate from the groove, and the movement of the support plate allows the fixing rod to separate. The movement of the connecting rod stretches the connecting spring, allowing the bottom plate to be removed and the mounting plate fixed to the top plate to be removed. This allows the silencer plate to move along with the bottom plate and be removed for processing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the adjustment mechanism of this utility model; Figure 3 This is a side view of the sound-absorbing plate and the body of the silencer of this utility model; Figure 4 For the present utility model Figure 1 Enlarged view of part A in the image; Figure 5 This is a top view of the base plate of this utility model; Figure 6 This is a bottom view of the overall structure of this utility model.

[0018] In the diagram: 1. Muffler body; 2. Adjustment mechanism; 201. Mounting plate; 202. Adjustment plate; 203. Annular plate; 204. Motor; 205. Threaded rod; 206. Rotating rod; 207. Lifting plate; 208. Muffler plate; 209. Crossbar; 3. Protective shell; 4. Base plate; 5. Fixing rod; 501. Connecting rod; 502. Support plate; 503. Limiting rod; 504. Groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 This utility model provides a technical solution: a high-efficiency star-shaped cross-section array silencer, including a silencer body 1, an adjustment mechanism 2 is provided at one end of the silencer body 1, a protective shell 3 is provided on the front of one end of the silencer body 1, a base plate 4 is provided at the bottom of the silencer body 1, and the base plate 4 is in contact with the silencer body 1, and a fixing rod 5 is fixedly provided at the bottom of the base plate 4.

[0021] The adjustment mechanism 2 includes a mounting plate 201, an adjustment plate 202 is provided on one side of the mounting plate 201, there are multiple adjustment plates 202, and the multiple adjustment plates 202 are arranged vertically and collinearly. An annular plate 203 is fixedly provided on one side of the muffler body 1, and the annular plate 203 is in contact with the adjustment plate 202. A motor 204 is provided inside the protective shell 3, and a threaded rod 205 is provided at the end of the output shaft of the motor 204. A rotating rod 206 is fixedly provided at one end of each adjustment plate 202. A lifting plate 207 is provided on one side of the motor 204. A sound-absorbing plate 208 is inlaid on the surface of the mounting plate 201, and the cross-sectional shape of the sound-absorbing plate 208 is star-shaped.

[0022] The mounting plate 201 is located inside one end of the silencer body 1. The silencer plate 208 is made of a sound-absorbing material component, and the silencer plate 208 can be set as either glass wool or rock wool.

[0023] A first toothed rail is provided on the side of the lifting plate 207 near the rotating rod 206, and a second toothed rail is provided on the side of the first toothed rail. The second toothed rail is fixedly connected to the rotating rod 206, and the first toothed rail meshes with the second toothed rail. A crossbar 209 is fixedly provided on the side of the lifting plate 207 away from the rotating rod 206. A threaded rod 205 passes through the crossbar 209 and is threadedly connected to the crossbar 209. The motor 204 drives the threaded rod 205 to rotate, and the crossbar 209 threadedly connected to the threaded rod 205 moves, which in turn drives the lifting plate 207 to move. At the same time, the first toothed rail also moves. During the movement of the first toothed rail, since the first toothed rail meshes with the second toothed rail, the movement of the first toothed rail causes the second toothed rail to rotate, which in turn causes the rotating rod 206 to rotate. The adjusting plate 202 fixedly connected to the rotating rod 206 rotates at the same time, allowing the adjusting plate 202 to rotate around the rotating rod 206.

[0024] Please see Figure 1 and 4 -6. Connecting rods 501 are provided at both ends of the fixing rod 5, and a support plate 502 is fixedly provided at the bottom end of the connecting rod 501. The support plate 502 has a U-shaped cross-section, and a connecting spring is provided on one side of the support plate 502. A limiting rod 503 is fixedly provided at the top end of the connecting rod 501. One end of the limiting rod 503 extends into the interior of the muffler body 1 and contacts the muffler body 1. Grooves 504 are provided on both the front and back of the base plate 4. One end of the limiting rod 503 is adapted to the groove 504. When replacing the sound-absorbing plate 208, the support plate 502 is moved, which causes the connecting rod 501 and the upper limiting rod 503 to move simultaneously. This allows the limiting rod 503 to separate from the groove 504. The movement of the support plate 502 also allows the crossbar 209 to separate. The movement of the connecting rod 501 stretches the connecting spring, allowing the base plate 4 to be removed. The mounting plate 201, which is fixedly connected to the top plate, can also be removed, allowing the sound-absorbing plate 208 to move along with the base plate 4. The sound-absorbing plate 208 can then be removed for further processing.

[0025] During operation, the gas continues to move after passing through the silencer plate 208. The silencer plate 208 can be made of either glass wool or rock wool, enabling noise reduction. The silencer plate 208 has a star-shaped cross-section, which has two more sections than the traditional square cross-section structure. This ensures the same ventilation area but significantly increases the perimeter of its noise-reducing surface. For materials with the same noise reduction coefficient, a larger noise-reducing surface area results in greater noise reduction. Therefore, this star-shaped array silencer has a higher noise reduction per unit length and is more efficient. Furthermore, the motor 204, whose output shaft is connected to the threaded rod 205, drives the threaded rod 205 to rotate. This causes the crossbar 209, threaded to the threaded rod 205, to move, which in turn moves the lifting plate 207. Simultaneously, the first toothed rail also moves. During the movement of the first toothed rail, it meshes with the second toothed rail, and the first toothed rail... The movement causes the second gear to rotate, which in turn causes the rotating rod 206 to rotate. The adjusting plate 202, which is fixedly connected to the rotating rod 206, rotates simultaneously, allowing the adjusting plate 202 to rotate around the rotating rod 206. This allows for adjustment of the angle of the adjusting plate 202. If the adjusting plate 202 is tilted at night, the air intake can be appropriately reduced. A smaller air intake can prevent excessive scouring and wear of the sound-absorbing material by high-speed airflow, extending the service life of the sound-absorbing plate 208. If the baffle is tilted at other times, but at a greater angle than the adjusting plate 202 at night, it provides more airflow to meet peak demand while avoiding energy consumption spikes caused by a horizontal state. This is especially suitable for scenarios with large load fluctuations during peak hours. Furthermore, the airflow is more stable, the turbulence intensity is reduced, and the local pressure fluctuations on the surface of the sound-absorbing plate 208 are reduced, which can reduce structural damage caused by long-term vibration and ensure the installation stability of the sound-absorbing plate 208.

[0026] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A high-efficiency star-shaped cross-section array silencer comprising a silencer body (1), characterized in that: An adjustment mechanism (2) is provided at one end of the muffler body (1), a protective shell (3) is provided on the front of one end of the muffler body (1), a base plate (4) is provided at the bottom of the muffler body (1), and the base plate (4) is in contact with the muffler body (1), and a fixing rod (5) is fixedly provided at the bottom of the base plate (4). The adjustment mechanism (2) includes a mounting plate (201), an adjustment plate (202) is provided on one side of the mounting plate (201), there are multiple adjustment plates (202), and the multiple adjustment plates (202) are arranged vertically and collinearly. An annular plate (203) is fixedly provided on one side of the muffler body (1), and the annular plate (203) is in contact with the adjustment plate (202). A motor (204) is provided inside the protective shell (3), and a threaded rod (205) is provided at the end of the output shaft of the motor (204). A rotating rod (206) is fixedly provided at one end of each adjustment plate (202). A lifting plate (207) is provided on one side of the motor (204). A sound-absorbing plate (208) is inlaid on the surface of the mounting plate (201), and the cross-sectional shape of the sound-absorbing plate (208) is star-shaped.

2. A high-efficiency star-in-cross-section array muffler according to claim 1, characterized in that: The mounting plate (201) is located inside one end of the muffler body (1), and the muffler plate (208) is made of a sound-absorbing material component.

3. A high efficiency star-in-cross-section array muffler according to claim 1, characterized in that: The lifting plate (207) is provided with a first toothed rail on the side near the rotating rod (206), and a second toothed rail is provided on one side of the first toothed rail.

4. A high-efficiency star-in-cross-section array muffler according to claim 3, characterized in that: The second toothed rail is fixedly connected to the rotating rod (206), and the first toothed rail meshes with the second toothed rail.

5. A high efficiency star-in-cross-section array silencer according to claim 1, characterized in that: A crossbar (209) is fixedly installed on the side of the lifting plate (207) away from the rotating rod (206), and the threaded rod (205) passes through the crossbar (209) and is threadedly connected to the crossbar (209).

6. A high efficiency star-in-cross-section array silencer according to claim 1, characterized in that: Both ends of the fixed rod (5) are provided with connecting rods (501), and the bottom end of the connecting rod (501) is fixedly provided with a support plate (502), and the cross-sectional shape of the support plate (502) is U-shaped.

7. A high efficiency star-in-cross-section array muffler according to claim 6, characterized in that: A connecting spring is provided on one side of the support plate (502), and a limiting rod (503) is fixedly provided at the top of the connecting rod (501).

8. A high efficiency star-in-cross-section array muffler according to claim 7, characterized in that: One end of the limiting rod (503) extends into the interior of the muffler body (1) and contacts the muffler body (1). The front and back sides of the base plate (4) are provided with grooves (504), and one end of the limiting rod (503) is adapted to the grooves (504).

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