A sound wave incidence angle adjustable baffle plate type muffler

Abstract

This utility model relates to the field of silencer technology, and in particular to a folding plate silencer with adjustable sound wave incident angle. It includes a housing, within which multiple sets of silencer plates are installed at intervals. Each set of silencer plates includes two guide vanes, the inner ends of which are rotatably mounted inside the housing via a vertical connecting shaft. The inner end faces of the two guide vanes are respectively provided with a first connecting slot and a second connecting slot, with the two first connecting slots and two second connecting slots corresponding to each other. It also includes a concave flexible connecting piece and a convex flexible connecting piece. The two ends of the concave flexible connecting piece are slidably inserted into the first connecting slots of the two guide vanes, and the two ends of the convex flexible connecting piece are slidably inserted into the second connecting slots of the two guide vanes. By rotatably connecting the first and second guide vanes to the housing and inserting connecting pieces into the connecting slots, the problem of existing silencers not being able to adjust their angle is solved.

Description

Technical Field

[0001] This utility model relates to the field of silencer technology, and in particular to a folding plate silencer with an adjustable sound wave incident angle. Background Technology

[0002] A plate silencer is a device that allows airflow to pass through while eliminating noise. It is widely used in industrial production and building sound insulation. Its working principle is mainly to install sound-absorbing plates inside the silencer, and absorb noise by reflecting sound waves between the sound-absorbing plates. The folded plate silencer is a further improvement on the plate silencer. By folding the sound-absorbing plates of the plate silencer, the time for noisy airflow to pass through the silencer is extended, thereby improving the sound absorption effect.

[0003] When the airflow velocity is high, the noise is loud, the passage time inside the silencer is short, and the noise reduction effect is poor, requiring the use of silencers with a larger angle. Conversely, when the airflow velocity is slow, the noise is low, and only a short passage time is needed to absorb most of the noise, so silencers with a smaller angle are sufficient. Most existing folding plate silencers can only maintain the same angle for their silencing plates, making it impossible to adapt them to different environmental needs. This necessitates re-molding and reassembling, which increases costs.

[0004] Therefore, in order to address the above problems, this utility model urgently needs to provide a folding plate silencer with an adjustable sound wave incident angle. Utility Model Content

[0005] The purpose of this utility model is to provide a folding plate silencer with an adjustable sound wave incident angle. By rotatably connecting two guide fan plates to the housing and inserting connecting pieces into the connecting slots, the problem of the silencer's inability to adjust the angle in the prior art can be solved.

[0006] A folding silencer with adjustable sound wave incident angle includes a housing, and multiple sets of silencer plates are installed at intervals along the length of the end face inside the housing.

[0007] Each set of silencers includes two guide vanes mounted in a figure-eight shape, with an installation gap between the two guide vanes. The inner ends of each guide vane are rotatably mounted inside the housing via a vertical connecting shaft. The inner end faces of the two guide vanes in each set of silencers are respectively provided with a first connecting slot and a second connecting slot, with the two first connecting slots and the two second connecting slots respectively provided. It also includes a concave flexible connecting piece and a convex flexible connecting piece. The two ends of the concave flexible connecting piece are slidably inserted into the first connecting slots of the two guide vanes, and the two ends of the convex flexible connecting piece are slidably inserted into the second connecting slots of the two guide vanes.

[0008] Furthermore, the outer end faces of each guide vane are streamlined.

[0009] Furthermore, the first connecting slot and the second connecting slot are respectively close to the two outer sides of the guide fan plate.

[0010] Furthermore, the housing contains multiple rotating motors, and the output shaft of each rotating motor is connected to a vertical connecting shaft via a coupling.

[0011] Furthermore, the angle between each guide vane and the longitudinal axis of the casing is 5°-10°.

[0012] Furthermore, the two opposite inner sides of the housing are respectively provided with a V-shaped concave side plate and a convex side plate, wherein the concave side plate is provided on one side of the convex flexible connecting piece, and the convex side plate is provided on one side of the concave flexible connecting piece.

[0013] Furthermore, the sound-absorbing panels are installed at equal intervals.

[0014] Furthermore, the angle between the concave side plate and the longitudinal axis of the shell is 5°, and the angle between the convex side plate and the longitudinal axis of the shell is 10°.

[0015] Furthermore, each guide vane is provided with an installation cavity, and a sound-absorbing liner is fixedly installed in the installation cavity; the side surface of each guide vane is also provided with multiple sound-absorbing holes that connect to the installation cavity at intervals.

[0016] Furthermore, the sound-absorbing lining includes glass wool, rock wool, or foam plastic.

[0017] The folding plate silencer with adjustable sound wave incident angle provided by this utility model has the following advantages compared with the prior art:

[0018] This invention provides a folded plate silencer with adjustable sound wave incident angle. The silencer plate is divided into two guide vanes, which are rotatably connected to the inner top and bottom of the housing, respectively. A flexible connecting piece connects the two guide vanes, allowing the angle of the folded plate silencer to be adjusted. When the two guide vanes rotate, the connecting piece guides the airflow. In cases of high noise, increasing the folded plate angle prolongs the airflow path, thus extending the sound absorption and noise reduction time of the silencer and improving the silencer effect. Conversely, decreasing the folded plate angle increases airflow permeability. Furthermore, the streamlined shape of the two guide vanes' outer end faces guides the airflow, reducing noise caused by the impact of the airflow on the silencer. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram (front view) of the adjustable sound wave incident angle folding silencer described in this utility model when the included angle between each guide fan plate and the longitudinal axis of the housing is 5°.

[0021] Figure 2 This is a schematic diagram (sectional view) of the adjustable sound wave incident angle folding silencer described in this utility model when the included angle between each guide fan plate and the longitudinal axis of the shell is 5°.

[0022] Figure 3 This is a schematic diagram (front view) of the adjustable sound wave incident angle folding silencer described in this utility model when the included angle between each guide fan plate and the longitudinal axis of the housing is 10°.

[0023] Figure 4 This is a schematic diagram (sectional view) of the adjustable sound wave incident angle folding silencer described in this utility model when the angle between each guide fan plate and the longitudinal axis of the housing is 10°.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Housing; 2. Guide fan plate; 3. Vertical connecting shaft; 4. First connecting slot; 5. Concave flexible connecting piece; 6. Convex flexible connecting piece; 7. Concave side plate; 8. Convex side plate; 9. Second connecting slot; 10. Installation gap. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the present invention provides a folding plate silencer with adjustable sound wave incident angle, including a housing 1, and multiple sets of silencer plates that are spaced vertically along the length of the end face are installed in the housing 1 at intervals.

[0030] Each set of silencers includes two guide vanes 2 installed in a figure-eight shape, with an installation gap 10 between the two guide vanes 2. The inner ends of each guide vane 2 are rotatably installed inside the housing 1 via a vertical connecting shaft 3. The inner end faces of the two guide vanes 2 of a set of silencers are respectively provided with a first connecting slot 4 and a second connecting slot 9, and the two first connecting slots 4 and the two second connecting slots 9 are respectively provided. It also includes a concave flexible connecting piece 5 and a convex flexible connecting piece 6. The two ends of the concave flexible connecting piece 5 are slidably inserted into the first connecting slots 4 of the two guide vanes 2, and the two ends of the convex flexible connecting piece 6 are slidably inserted into the second connecting slots 9 of the two guide vanes 2.

[0031] In each group of silencing plates, two guide fan plates 2 are symmetrically installed in a figure-eight shape inside the housing 1, and are rotatably connected to the inner top and bottom surfaces of the housing 1. Therefore, the angle of the guide fan plates 2 can be adjusted by rotating the vertical connecting shaft 3, thereby controlling the length of the silencing channel between each group of silencing plates. Since the two guide fan plates 2 are connected by a concave flexible connecting piece 5 and a convex flexible connecting piece 6, the sides of the guide fan plates 2 and the sides of the concave or convex flexible connecting pieces 5 or 6 will enclose and form a complete silencing channel between two adjacent groups of silencing plates. This ensures the silencing effect without affecting the airflow. In this invention, the concave flexible connecting piece 5 and the convex flexible connecting piece 6 can be bent along the length direction, and the two ends of the concave flexible connecting piece 5 and the convex flexible connecting piece 6 can be slidably inserted into the first connecting slot 4 or the second connecting slot 9, respectively. Therefore, the angle between the two guide fan plates 2 can be adjusted accordingly, ensuring the integrity of the silencing channel and increasing the airflow.

[0032] This invention provides a folded plate silencer with adjustable sound wave incident angle. The silencer plate is divided into two guide vanes, which are rotatably connected to the inner top and bottom of the housing, respectively. A flexible connecting piece connects the two guide vanes, allowing the angle of the folded plate silencer to be adjusted. When the two guide vanes rotate, the connecting piece guides the airflow. In cases of high noise, increasing the folded plate angle prolongs the airflow path, thus extending the sound absorption and noise reduction time of the silencer and improving the silencer effect. Conversely, decreasing the folded plate angle increases airflow permeability. Furthermore, the streamlined shape of the two guide vanes' outer end faces guides the airflow, reducing noise caused by the impact of the airflow on the silencer.

[0033] like Figure 2 , Figure 4 As shown, the outer end face of each guide fan 2 is streamlined.

[0034] This invention provides streamlined air guides on the outer end faces of the two air guide plates 2, which guide the airflow when it enters, preventing the airflow from impacting the outer end faces of the air guide plates 2 and causing additional noise.

[0035] In this embodiment, the first connecting slot 4 and the second connecting slot 9 are respectively close to the two outer sides of the guide fan plate 2.

[0036] In this invention, the first connecting slot 4 and the second connecting slot 9 are respectively close to the outer side of the guide fan plate 2, which reduces the distance between the concave flexible connecting piece 5 and the convex flexible connecting piece 6 and the outer side of the guide fan plate 2 on the corresponding side. This reduces the width change from the guide fan plate 2 section to the connecting segment in the noise reduction channel, avoids the airflow being affected by the sharply reduced cross section when passing through, and increases the airflow permeability.

[0037] In this embodiment, the housing 1 is provided with multiple rotating motors, and the output shaft of each rotating motor is connected to the vertical connecting shaft 3 through a coupling.

[0038] In this embodiment, the included angle between each guide fan 2 and the longitudinal axis of the housing 1 is 5°-10°.

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the two inner sides of the housing 1 are respectively provided with a V-shaped concave side plate 7 and a convex side plate 8, wherein the concave side plate 7 is provided on one side of the convex flexible connecting piece 6, and the convex side plate 8 is provided on one side of the concave flexible connecting piece 5.

[0040] In this invention, the concave side plate 7 is disposed on one side of the convex flexible connecting piece 6, so that the silencing plate closest to the concave side plate 7 and the concave side plate 7 can form a silencing channel with a small width variation; the convex side plate 8 is disposed on one side of the concave flexible connecting piece 5, so that the silencing plate closest to the convex side plate 8 and the convex side plate 8 can form a silencing channel with a small width variation, thereby increasing the airflow permeability.

[0041] In this embodiment, the sound-absorbing panels are installed at equal intervals.

[0042] In this embodiment, the angle between the concave side plate 7 and the longitudinal axis of the housing 1 is 5°, and the angle between the convex side plate 8 and the longitudinal axis of the housing 1 is 10°.

[0043] In this embodiment, each guide fan plate 2 is provided with an installation cavity, and a sound-absorbing liner is fixedly installed in the installation cavity; a plurality of sound-absorbing holes communicating with the installation cavity are also arranged at intervals on the inner surface of each guide fan plate 2.

[0044] In this embodiment, the sound-absorbing lining includes glass wool, rock wool, or foam plastic.

[0045] The embodiments of this utility model include the following steps:

[0046] In this invention, when the angle of the noise-reducing plate needs to be adjusted, the two guide fan plates 2 are rotated to a specific angle. During this process, since the concave flexible connecting piece 5 and the convex flexible connecting piece 6 are slidably inserted into the first connecting slot 4 and the second connecting slot 9 respectively, the concave flexible connecting piece 5 and the convex flexible connecting piece 6 deform accordingly, smoothly connecting the inner end faces of the two guide fan plates 2 to form multiple noise-reducing plates with consistent spacing and specific angles. With the cooperation of the concave side plate 7 and the convex side plate 8 of the housing 1, a noise-reducing channel with a specific angle and small width variation is formed. When the airflow passes through, it is first evenly distributed to the noise-reducing channels on the left and right sides through the air guide. The noise is reflected between the noise-reducing plates and absorbed by the noise-reducing lining installed in the mounting cavity of the guide fan plate 2, thereby reducing the noise of the airflow.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A folding plate silencer with adjustable sound wave incident angle, characterized in that: Includes a housing (1), and multiple sets of sound-absorbing plates are installed at intervals along the length of the end face inside the housing (1); Each set of silencers includes two guide fan plates (2) installed in a figure-eight shape. There is an installation gap (10) between the two guide fan plates (2). The inner end of each guide fan plate (2) can be rotatably installed inside the housing (1) through a vertical connecting shaft (3). The inner end faces of the two guide fan plates (2) of a set of silencers are respectively provided with a first connecting slot (4) and a second connecting slot (9). The two first connecting slots (4) and the two second connecting slots (9) are respectively provided. It also includes a concave flexible connecting piece (5) and a convex flexible connecting piece (6). The two ends of the concave flexible connecting piece (5) are slidably inserted into the first connecting slots (4) of the two guide fan plates (2). The two ends of the convex flexible connecting piece (6) are slidably inserted into the second connecting slots (9) of the two guide fan plates (2).

2. The adjustable sound wave incident angle folding plate silencer according to claim 1, characterized in that: The outer end face of each guide fan (2) is streamlined.

3. The adjustable sound wave incident angle folding silencer according to claim 2, characterized in that: The first connecting slot (4) and the second connecting slot (9) are respectively close to the two outer sides of the guide fan plate (2).

4. The adjustable sound wave incident angle folding silencer according to claim 3, characterized in that: The housing (1) is equipped with multiple rotating motors, and the output shaft of each rotating motor is connected to the vertical connecting shaft (3) through a coupling.

5. The adjustable sound wave incident angle folding plate silencer according to claim 4, characterized in that: The angle between each guide fan plate (2) and the longitudinal axis of the housing (1) is 5°-10°.

6. The adjustable sound wave incident angle folding plate silencer according to claim 5, characterized in that: The shell (1) has a V-shaped concave side plate (7) and a convex side plate (8) on its two opposite inner sides. The concave side plate (7) is located on the side of the convex flexible connecting piece (6), and the convex side plate (8) is located on the side of the concave flexible connecting piece (5).

7. The adjustable sound wave incident angle folding plate silencer according to claim 6, characterized in that: Each sound-absorbing panel is installed at equal intervals.

8. The adjustable sound wave incident angle folding silencer according to claim 7, characterized in that: The angle between the concave side plate (7) and the longitudinal axis of the shell (1) is 5°, and the angle between the convex side plate (8) and the longitudinal axis of the shell (1) is 10°.

9. The adjustable sound wave incident angle folding silencer according to claim 8, characterized in that: Each guide fan plate (2) has an installation cavity, and a sound-absorbing liner is fixedly installed in the installation cavity; the side surface of each guide fan plate (2) is also provided with multiple sound-absorbing holes that connect to the installation cavity at intervals.

10. The adjustable sound wave incident angle folding silencer according to claim 9, characterized in that: Sound-absorbing linings include glass wool, rock wool, or foam plastic.

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