Channel winding type silencer

Abstract

The utility model relates to the technical field of silencers, in particular to a channel winding type silencer, which comprises a silencer outer cylinder and is characterized in that an outer winding silencing column group is arranged on the inner wall of the silencing column outer cylinder, an inner winding silencing column group is arranged on the inner wall of the outer winding silencing column group, a silencer inner cylinder is arranged in the center of the inner wall of the inner winding silencing column group, and a silencer outer cylinder is arranged on the inner wall of the silencer inner cylinder. According to the silencer, the long silencing channel is arranged, due to the fact that airflow rotates in the rotating channel, and on the premise that the length of the silencer is not changed, the length of the silencing channel of the silencer is longer, noise is repeatedly absorbed in the bent channel formed by the perforated plates, and the silencing effect is remarkable; due to the design of the winding channel, the pressure head loss of airflow is reduced, the pneumatic resistance is reduced, and the power loss is reduced; and the device is wide in applicability, can be suitable for noise treatment of various pipelines and high-noise airflow ports, and can also be applied to various industrial equipment such as petrochemical equipment, metallurgical equipment and energy equipment.

Description

Technical Field

[0001] This utility model relates to the field of silencer technology, and in particular to a channel-type rotating silencer. Background Technology

[0002] There are many types of existing silencers, but most suffer from a trade-off between noise reduction effect and aerodynamic drag. While resistive or resonant silencers have low aerodynamic drag, their noise reduction effect is often poor; while reactive silencers, although highly effective, have high aerodynamic drag, significant power loss, and in some applications, their size is limited. Therefore, the market urgently needs a silencer that can reduce noise more effectively while minimizing aerodynamic drag loss.

[0003] Chinese patent discloses a resonant muffler (publication number: CN 205422881 U) comprising a shell, an inner tube, a first partition, a second partition, and a muffler tube; the internal structure is divided into three chambers by two partitions; the shell is a tubular body, and the two ends of the inner tube are fixed horizontally in the second chamber of the shell through the first and second partitions respectively; the lower end of the muffler tube penetrates vertically into the rear of the third chamber of the shell and is opposite to the rear end of the inner tube. However, although this resonant muffler has low aerodynamic resistance, its noise reduction effect is often poor; while the reactive muffler has a good noise reduction effect, it has high aerodynamic resistance and serious power loss, and in some application scenarios, the size of the muffler is limited. Therefore, a channel-wound muffler is needed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as resonant mufflers having low aerodynamic resistance but often poor noise reduction effect, and reactive mufflers having good noise reduction effect but high aerodynamic resistance and severe power loss, and the limitation of muffler size in some application scenarios. Therefore, a channel-wound muffler is proposed.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: A channel-type vortex silencer, comprising an outer cylinder, is characterized in that: an outer vortex silencer column group is provided on the inner wall of the outer cylinder, an inner vortex silencer column group is provided on the inner wall of the outer vortex silencer column group, and an inner cylinder is located at the center of the inner wall of the inner vortex silencer column group. Due to the design of the double-layered vortex silencer column group, the noise reduction effect can be significantly improved, especially when dealing with high-speed airflow, effectively reducing noise caused by airflow. Furthermore, the inner cylinder located at the center can further concentrate and process remaining noise, ensuring that the final discharged airflow reaches a lower noise level.

[0006] Preferably, both the inner and outer spiral silencing column groups are composed of 10 to 20 rotating silencing columns. Using a combination of multiple rotating silencing columns not only increases the length of the airflow path but also changes the direction of the airflow through rotation, resulting in a more even distribution of airflow in all directions and avoiding increased noise caused by excessively high local airflow speeds.

[0007] Preferably, both the inner and outer spiral silencer column groups are equipped with flow guides at their tops. By providing flow guides, the direction and speed of the airflow can be effectively controlled, allowing it to pass more smoothly through the various parts inside the silencer and reducing additional noise caused by airflow turbulence. Simultaneously, the flow guides can also help disperse the kinetic energy in the airflow, further reducing the noise level.

[0008] Preferably, both the inner and outer spiral silencing column groups adopt a spiral array design and are associated with the inner cylinder of the silencer. The spiral array design not only increases the length of the airflow path but also changes the direction of the airflow through its continuous spiral shape, allowing the airflow to make more thorough contact with the sound-absorbing material as it passes through the silencer, thus improving silencing efficiency. Furthermore, this design can reduce airflow reflection and echo phenomena inside the silencer, further enhancing silencing performance.

[0009] Preferably, the silencer inner cylinder, silencer outer cylinder, inner spiral silencing column group, and outer spiral silencing column group are combined, and spiral tubular airflow channels are provided between the combinations. By setting multiple spiral tubular airflow channels, the present invention can effectively extend the length and complexity of the airflow path, thereby increasing the contact area and time between the airflow and the sound-absorbing material, and improving the silencing efficiency. At the same time, this design can also reduce the reflection and echo phenomena of airflow inside the silencer, further improving the silencing performance.

[0010] Preferably, the airflow contact surface material of the inner cylinder of the silencer, the inner spiral silencer column group, the outer spiral silencer column group, and the outer cylinder of the silencer is a perforated plate. The inner spiral silencer column group, the outer spiral silencer column group, and the outer cylinder of the silencer are provided with porous sound-absorbing material. The perforated plate material has good air permeability and sound absorption performance, which can effectively absorb and attenuate the noise passing through its surface; while the porous sound-absorbing material can further absorb noise energy when the airflow passes through, thereby improving the noise reduction effect.

[0011] The advantages of this utility model are:

[0012] This application utilizes a longer silencing channel. Because the airflow rotates within the channel, and with the silencer length remaining constant, the longer silencing channel of this patented silencer allows noise to be repeatedly absorbed within the curved channel formed by the perforated plates, resulting in a significant silencing effect. The rotating channel design reduces the pressure head loss of the airflow and lowers aerodynamic resistance, thereby reducing power loss. It has wide applicability and can be used for noise control in various pipelines and high-noise airflow ports. It can also be applied to various industrial equipment in petrochemical, metallurgical, and energy industries. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0016] In the diagram: 1. Silencer outer cylinder; 2. Swirling tubular airflow channel; 3. Rotating silencer column; 4. Guide head; 5. Silencer inner cylinder; 6. Outer swirling silencer column assembly; 7. Inner swirling silencer column assembly. Detailed Implementation

[0017] 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 scope of protection of the present utility model.

[0018] Example

[0019] Please see Figure 1-2 As shown, a channel-type vortex silencer includes an outer cylinder 1. Its key feature is that the inner wall of the outer cylinder is provided with an outer vortex silencer column assembly 6, the inner wall of the outer vortex silencer column assembly 6 is provided with an inner vortex silencer column assembly 7, and the center of the inner wall of the inner vortex silencer column assembly 7 is provided with an inner cylinder 5. Due to the design of the double-layered vortex silencer column assembly, the silencing effect is significantly improved, especially when dealing with high-speed airflow, effectively reducing noise caused by airflow. Furthermore, the inner cylinder 5, located at the center, can further concentrate and process remaining noise, ensuring that the final exhaust airflow reaches a lower noise level.

[0020] In this embodiment, both the inner spiral silencing column group 7 and the outer spiral silencing column group 6 are composed of 10 to 20 rotating silencing columns 3. Using a combination of multiple rotating silencing columns 3 not only increases the length of the airflow path but also changes the direction of the airflow through rotation, resulting in a more even distribution of airflow in all directions and avoiding increased noise caused by excessively high local airflow speeds.

[0021] In this embodiment, both the inner spiral silencer column group 7 and the outer spiral silencer column group 6 are equipped with guide heads 4 at their tops. By setting the guide heads 4, the direction and speed of the airflow can be effectively controlled, allowing it to pass more smoothly through the various parts inside the silencer and reducing additional noise caused by airflow turbulence. At the same time, the guide heads 4 can also help disperse the kinetic energy in the airflow, further reducing the noise level.

[0022] In this embodiment, both the inner spiral silencing column group 7 and the outer spiral silencing column adopt a spiral array design and are associated with the inner cylinder 5 of the silencer. The spiral array design not only increases the length of the airflow path but also changes the direction of the airflow through the continuous spiral shape, allowing the airflow to come into more full contact with the sound-absorbing material when passing through the silencer, thus improving the silencing efficiency. In addition, this design can also reduce the reflection and echo phenomena of the airflow inside the silencer, further improving the silencing performance.

[0023] In this embodiment, the silencer inner cylinder 5, silencer outer cylinder 1, inner spiral silencing column group 7, and outer spiral silencing column group 6 are combined to form a structure with spiral tubular airflow channels 2 between the combinations. By setting multiple spiral tubular airflow channels, the present invention can effectively extend the length and complexity of the airflow path, thereby increasing the contact area and time between the airflow and the sound-absorbing material, and improving the silencing efficiency. At the same time, this design can also reduce the reflection and echo phenomena of airflow inside the silencer, further improving the silencing performance.

[0024] In this embodiment, the airflow contact surface material of the inner cylinder 5, the inner spiral silencing column group 7, the outer spiral silencing column group 6, and the outer cylinder 1 of the silencer is a perforated plate. The inner spiral silencing column group 7, the outer spiral silencing column group 6, and the outer cylinder 1 of the silencer are provided with porous sound-absorbing material. The perforated plate material has good air permeability and sound absorption performance, which can effectively absorb and attenuate the noise passing through its surface; while the porous sound-absorbing material can further absorb noise energy when the airflow passes through, thereby improving the silencing effect.

[0025] The implementation principle of this embodiment is as follows: First, airflow enters: When the airflow enters from the outer cylinder 1 of the silencer, it first encounters the outer spiraling silencer column group 6; initial noise reduction: In the outer spiraling silencer column group 6, the airflow is affected by multiple rotating silencer columns 3, generating rotational motion; subsequently, the airflow enters the inner spiraling silencer column group 7, where the silencer columns also adopt a spiral spiral array design, further extending the airflow path and absorbing more noise. At the same time, the design of the guide head 4 ensures that the airflow flows smoothly between each silencer column, avoiding noise increase caused by excessively fast local airflow speeds. Finally, the airflow reaches the central inner cylinder 5 of the silencer. This inner cylinder is also the core part of the entire silencer, used to centrally process the remaining noise; throughout the process, the perforated plate material and the porous sound-absorbing material work together. The perforated plate material has good air permeability and sound absorption performance, while the porous sound-absorbing material can further absorb noise energy when the airflow passes through; airflow exit: The airflow after multi-layer noise reduction treatment is exited from the inner cylinder 5 of the silencer, achieving a lower noise level.

[0026] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A passage-rotary silencer comprising a silencer outer cylinder (1), characterized in that: The outer wall of the muffler outer cylinder (1) is provided with an outer spiral winding muffler column group (6), the inner wall of the outer spiral winding muffler column group (6) is provided with an inner spiral winding muffler column group (7), and the center of the inner wall of the inner spiral winding muffler column group (7) is provided with a muffler inner cylinder (5).

2. A passage-rotary silencer according to claim 1, characterized in that: The inner spiral winding muffler column group (7) and the outer spiral winding muffler column group (6) are each composed of 10-20 rotating muffler columns (3).

3. A passage-rotary silencer according to claim 1, characterized in that: The top of the inner spiral winding muffler column group (7) and the outer spiral winding muffler column group (6) is each provided with a flow guide head (4).

4. A passage-rotary silencer according to claim 1, characterized in that: The inner spiral winding muffler column group (7) and the outer spiral winding muffler column group (6) are each designed in a spiral winding array and are associated with the muffler inner cylinder (5).

5. A passage-rotary silencer according to claim 1, characterized in that: The muffler inner cylinder (5), the muffler outer cylinder (1), the inner spiral winding muffler column group (7) and the outer spiral winding muffler column group (6) are combined and are provided with a spiral winding pipe-shaped airflow channel (2) between the combinations.

6. A passage-rotary silencer according to claim 1, characterized in that: The airflow contact surface of the muffler inner cylinder (5), the inner spiral winding muffler column group (7), the outer spiral winding muffler column group (6) and the muffler outer cylinder (1) is made of a perforated plate, and the inner spiral winding muffler column group (7), the outer spiral winding muffler column group (6) and the muffler outer cylinder (1) are provided with a porous sound absorbing material.

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