An adjustable industrial silencer

Abstract

The utility model discloses an adjustable industrial silencer, which comprises a mounting base, a airflow inlet is formed in the middle part of the mounting base, a telescopic power mechanism is fixedly arranged on the outer wall of the mounting base, a mounting plate is fixedly arranged on the telescopic end of the telescopic power mechanism, an airflow outlet is formed in the middle part of the mounting plate, and soundproof cotton is fixedly arranged on the inner circumferential surface of the airflow inlet; a three-stage telescopic cylinder is fixedly arranged on the inner circumferential surface of the first-stage telescopic cylinder, the second-stage telescopic cylinder and the three-stage telescopic cylinder, and the three-stage telescopic cylinder is telescoped by the telescopic end of the telescopic power mechanism to adjust the axial elongation of the three-stage telescopic cylinder; a separation-preventing mechanism is arranged between the first-stage telescopic cylinder, the second-stage telescopic cylinder and the three-stage telescopic cylinder to prevent the three-stage telescopic cylinder from being completely separated from each other; the axial elongation of the three-stage telescopic cylinder is adjusted by the telescopic power mechanism, the internal passage structure of the silencer can be changed, and the silencing operation requirement under different working conditions can be met.

Description

Technical Field

[0001] This utility model relates to the field of industrial silencing equipment technology, specifically an adjustable industrial silencer. Background Technology

[0002] Industrial silencers, as an important noise control device, are widely used in various industrial scenarios to reduce the noise generated by mechanical equipment.

[0003] Traditional industrial silencers typically employ a fixed structure, whose internal structure and dimensions cannot be altered once designed and manufactured. However, in actual industrial production, the noise frequency, intensity, and airflow parameters generated by equipment often vary under different operating conditions. Silencers with fixed structures struggle to adapt to these complex and variable conditions, resulting in poor noise reduction performance under certain conditions and failing to meet the noise control requirements of actual production.

[0004] Therefore, we have made technical improvements to existing industrial silencers to meet the requirements of adjustable silencing paths, thereby changing the design. Utility Model Content

[0005] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing an adjustable industrial silencer with adjustable circumferential silencing path and silencing effect.

[0006] The technical problem to be solved by this utility model is achieved through the following technical solution: an adjustable industrial silencer, comprising;

[0007] The mounting base has an airflow inlet in its middle, a telescopic power mechanism is fixed on the outer wall of the mounting base, a mounting plate is fixed on the telescopic end of the telescopic power mechanism, an airflow outlet is opened in the middle of the mounting plate, and sound insulation cotton is fixed on the inner circumferential surface of the airflow inlet.

[0008] The three-stage telescopic cylinder consists of a first-stage telescopic cylinder, a second-stage telescopic cylinder, and a third-stage telescopic cylinder with gradually decreasing inner diameters. The front end of the first-stage telescopic cylinder is fixed to the side wall at the airflow outlet of the mounting base. The inner circumferential surface of the front end of the second-stage telescopic cylinder is fitted onto the outer circumferential surface of the rear end of the first-stage telescopic cylinder. The inner circumferential surface of the front end of the third-stage telescopic cylinder is fitted onto the outer circumferential surface of the rear end of the second-stage telescopic cylinder. The rear end of the third-stage telescopic cylinder is fixed to the side wall at the airflow inlet of the mounting base. Sound-absorbing grids are fixed on the inner circumferential surfaces of the first-stage, second-stage, and third-stage telescopic cylinders. The telescopic end of the telescopic power mechanism extends and retracts to adjust the axial elongation of the third-stage telescopic cylinder.

[0009] An anti-detachment mechanism is installed between the first-stage, second-stage, and third-stage telescopic cylinders to prevent them from completely separating from each other.

[0010] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the adjustable industrial silencer described above, wherein the anti-detachment mechanism includes an abutment block and an abutment platform.

[0011] The abutment block is fixed on the inner circumferential surface of the rear end of the primary telescopic cylinder and the secondary telescopic cylinder;

[0012] The abutment platform is fixed on the outer circumferential surface of the front end of the secondary and tertiary telescopic cylinders.

[0013] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the adjustable industrial silencer described above has a flange fixedly provided on the airflow inlet end face of the mounting base.

[0014] The technical problem to be solved by this utility model can also be achieved through the following technical solution: In the adjustable industrial silencer described above, the axis of the first-stage telescopic cylinder, the axis of the second-stage telescopic cylinder, the axis of the third-stage telescopic cylinder, the axis of the airflow inlet, the axis of the airflow outlet, and the telescopic end of the telescopic power mechanism are parallel in telescopic direction.

[0015] The technical problem to be solved by this utility model can also be achieved through the following technical solution: In the adjustable industrial silencer described above, the inner diameter of the outlet end of the three-stage telescopic cylinder is smaller than the inner diameter of the airflow outlet.

[0016] Compared with the prior art, the beneficial technical effects of this utility model are:

[0017] (1) By adjusting the axial elongation of the three-stage telescopic cylinder through the telescopic power mechanism, the internal channel structure of the silencer can be changed to adapt to the silencer operation requirements under different working conditions.

[0018] (2) The anti-detachment mechanism is set between the first-stage telescopic cylinder, the second-stage telescopic cylinder and the third-stage telescopic cylinder. The abutting block and abutting platform in the anti-detachment mechanism can effectively prevent the telescopic cylinders from completely detaching from each other during the telescopic process, prevent equipment failure caused by the detachment of parts, and ensure the normal operation of the silencer.

[0019] (3) A flange is fixed on the airflow inlet end face of the mounting base to facilitate the connection of the silencer with the industrial pipeline system, so that the silencer can be easily matched with various standard pipelines, thereby improving the versatility and interchangeability of the equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of the three-stage telescopic cylinder of this utility model when it is not extended;

[0021] Figure 2 This is a front view schematic diagram of the three-stage telescopic cylinder of this utility model when it is extended.

[0022] Reference numerals in the attached diagram: 1. Mounting base; 2. Airflow inlet; 3. Flange; 4. Telescopic power mechanism; 5. Mounting plate; 6. Airflow outlet; 7. Sound insulation cotton; 8. Primary telescopic cylinder; 9. Secondary telescopic cylinder; 10. Tertiary telescopic cylinder; 11. Sound-absorbing grille; 12. Abutment block; 13. Abutment platform. Detailed Implementation

[0023] The specific technical solutions of this utility model are further described below with reference to the accompanying drawings, so as to enable those skilled in the art to further understand this utility model, without constituting a limitation on its rights.

[0024] Example 1, referring to Figure 1-2 An adjustable industrial silencer, comprising:

[0025] Mounting base 1 is formed into a roughly square block structure with an air inlet 2 in the middle. The air inlet 2 is a circular through hole. A flange 3 is fixed on the end face of the air inlet 2 of the mounting base 1. The flange 3 can be connected to an external air intake pipe. A telescopic power mechanism 4 is fixed on the outer wall of the mounting base 1. The telescopic power mechanism 4 can be a telescopic electric cylinder. A mounting plate 5 is fixed on the telescopic end of the telescopic power mechanism 4. The mounting plate 5 is formed into a roughly square plate structure. An air outlet 6 is formed in the middle of the mounting plate 5. The air outlet 6 can be a circular through hole. Sound insulation cotton 7 is fixed on the inner circumferential surface of the air inlet 2. The sound insulation cotton 7 is formed into a roughly cylindrical structure and serves as the first layer of sound insulation.

[0026] The three-stage telescopic cylinder consists of a first-stage telescopic cylinder 8, a second-stage telescopic cylinder 9, and a third-stage telescopic cylinder 10, with their inner diameters gradually decreasing. The inner diameter of the outlet end of the third-stage telescopic cylinder 10 is smaller than the inner diameter of the airflow outlet 6. That is to say, the inner diameters of the airflow outlet 6, the first-stage telescopic cylinder 8, the second-stage telescopic cylinder 9, the third-stage telescopic cylinder 10, and the airflow inlet 2 are arranged from large to small. When the third-stage telescopic cylinder 10 is fully extended, the flow velocity of the airflow after entering the silencer will gradually decrease. The axes of the first-stage telescopic cylinder 8, the second-stage telescopic cylinder 9, the third-stage telescopic cylinder 10, the airflow inlet 2, the airflow outlet 6, and the telescopic movement... The telescopic ends of the force mechanism are parallel in telescopic direction. The front end of the first-stage telescopic cylinder 8 is fixed on the side wall of the airflow outlet 6 of the mounting base 1. The inner circumferential surface of the front end of the second-stage telescopic cylinder 9 is fitted on the outer circumferential surface of the rear end of the first-stage telescopic cylinder 8. The inner circumferential surface of the front end of the third-stage telescopic cylinder 10 is fitted on the outer circumferential surface of the rear end of the second-stage telescopic cylinder 9. The rear end of the third-stage telescopic cylinder 10 is fixed on the side wall of the airflow inlet 2 of the mounting base 1. Sound-absorbing grilles 11 are fixed on the inner circumferential surfaces of the first-stage telescopic cylinder 8, the second-stage telescopic cylinder 9 and the third-stage telescopic cylinder 10. The telescopic ends of the telescopic power mechanism 4 extend and retract, thereby adjusting the axial elongation of the third-stage telescopic cylinder 10.

[0027] It should be noted that this silencer has two operating modes. In one mode, the three-stage telescopic cylinder 10 is not extended, and the telescopic end of the telescopic power mechanism 4 is also not extended. The airflow is directly discharged into the air through the three-stage telescopic cylinder 10. Although the three-stage telescopic cylinder 10 has an air outlet 6 at its rear end, and the inner diameter of the air outlet 6 is larger than the inner diameter of the three-stage telescopic cylinder 10, the airflow velocity will not be reduced because the air outlet 6 is larger than the inner diameter of the three-stage telescopic cylinder 10 due to the short airflow silencing path. In the other mode, the three-stage telescopic cylinder 10 is fully extended, and the telescopic end of the telescopic power mechanism 4 is also extended. The airflow passes through the three-stage telescopic cylinder 10, the two-stage telescopic cylinder 9, the one-stage telescopic cylinder 8, and the air outlet 6 in sequence. While reducing the airflow velocity, the sound-absorbing grille 11 arranged on the inner circumference of the three-stage telescopic cylinder 10 can reduce the decibel of airflow noise to the greatest extent, thereby achieving the purpose of sound insulation / sound absorption.

[0028] An anti-detachment mechanism is provided between the first-stage telescopic cylinder 8, the second-stage telescopic cylinder 9, and the third-stage telescopic cylinder 10 to prevent them from completely separating from each other. The anti-detachment mechanism includes an abutment block 12 and an abutment platform 13, both of which are formed into a roughly square plate structure. The abutment block 12 is fixed to the inner circumferential surface of the rear end of the first-stage telescopic cylinder 8 and the second-stage telescopic cylinder 9. The abutment platform 13 is fixed to the outer circumferential surface of the front end of the second-stage telescopic cylinder 9 and the third-stage telescopic cylinder 10.

[0029] When the third-stage telescopic cylinder 10 extends, due to the presence of the abutment block 12 and the abutment platform 13, the first-stage telescopic cylinder 8 and the second-stage telescopic cylinder 9 will not completely separate, and the second-stage telescopic cylinder 9 will not completely separate from the third-stage telescopic cylinder 10.

[0030] The process of using the adjustable industrial silencer in Example 1 is as follows:

[0031] (1) Initial state: At this time, the three-stage telescopic cylinder 10 is not extended. First, the mounting base 1 of the silencer is connected to the external airflow pipe through the flange 3 to ensure that the airflow inlet 2 is aligned with the pipe outlet. At this time, the telescopic power mechanism 4 is in the contracted state, the three-stage telescopic cylinder 10 is not unfolded, and the overall length is the shortest. At this time, the airflow path is that the airflow enters the three-stage telescopic cylinder 10 directly from the pipe through the airflow inlet 2, and then is discharged into the air through the airflow outlet 6. Due to the short silencer path, the airflow velocity is not significantly reduced, but the sound-absorbing grid 11 and sound insulation cotton 7 on the inner wall of the three-stage telescopic cylinder 10 can still provide a preliminary sound absorption effect. It is suitable for working conditions with low noise control requirements or low airflow pressure. At this time, the silencer mainly plays a basic noise reduction role.

[0032] (2) Adjustment process: The telescopic power mechanism 4 is started by external power, which causes the telescopic end of the telescopic cylinder to extend outward, pushing the mounting plate 5 and the air outlet 6 fixed on it away from the mounting base 1. The first-stage telescopic cylinder 8 is pulled out with the movement of the mounting plate 5. Its front end is fixed on the mounting base 1, and its rear end drives the second-stage telescopic cylinder 9 to unfold. When the second-stage telescopic cylinder 9 is pulled out, it drives the third-stage telescopic cylinder 10 to unfold. When each stage of the telescopic cylinder approaches the maximum stroke, the abutting block 12 and the abutting platform 13 abut against each other to prevent the telescopic cylinder from completely separating. At this time, the airflow path is that the airflow passes through the third-stage telescopic cylinder 10, the second-stage telescopic cylinder 9, the first-stage telescopic cylinder 8 and the air outlet 6 in sequence. As the flow cross-sectional area increases step by step, the airflow speed gradually decreases. The noise energy is absorbed by the sound-absorbing grille 11 multiple times. The airflow path is the longest and the inner diameter is expanded in a step-like manner to achieve significant flow velocity attenuation. The sound-absorbing grille 11 covers the entire inner wall of the telescopic cylinder. The noise sound wave is reflected and absorbed multiple times, and the decibel value is greatly reduced. It is suitable for high noise and high pressure airflow conditions. It achieves efficient noise reduction by extending the silencing path and step-by-step pressure reduction.

Claims

1. An adjustable industrial silencer, characterized in that: It includes; The mounting base has an airflow inlet in its middle, a telescopic power mechanism is fixed on the outer wall of the mounting base, a mounting plate is fixed on the telescopic end of the telescopic power mechanism, an airflow outlet is opened in the middle of the mounting plate, and sound insulation cotton is fixed on the inner circumferential surface of the airflow inlet. The three-stage telescopic cylinder consists of a first-stage telescopic cylinder, a second-stage telescopic cylinder, and a third-stage telescopic cylinder with gradually decreasing inner diameters. The front end of the first-stage telescopic cylinder is fixed to the side wall at the airflow outlet of the mounting base. The inner circumferential surface of the front end of the second-stage telescopic cylinder is fitted onto the outer circumferential surface of the rear end of the first-stage telescopic cylinder. The inner circumferential surface of the front end of the third-stage telescopic cylinder is fitted onto the outer circumferential surface of the rear end of the second-stage telescopic cylinder. The rear end of the third-stage telescopic cylinder is fixed to the side wall at the airflow inlet of the mounting base. Sound-absorbing grilles are fixed on the inner circumferential surfaces of the first-stage, second-stage, and third-stage telescopic cylinders. The telescopic end of the telescopic power mechanism extends and retracts to adjust the axial elongation of the third-stage telescopic cylinder. An anti-detachment mechanism is installed between the first-stage, second-stage, and third-stage telescopic cylinders to prevent them from completely separating from each other.

2. An adjustable industrial silencer according to claim 1, characterized in that: The anti-detachment mechanism includes an abutment block and an abutment platform; The abutment block is fixed on the inner circumferential surface of the rear end of the primary telescopic cylinder and the secondary telescopic cylinder; The abutment platform is fixed on the outer circumferential surface of the front end of the secondary and tertiary telescopic cylinders.

3. An adjustable industrial silencer according to claim 1, characterized in that: A flange is fixedly provided on the airflow inlet end face of the mounting base.

4. An adjustable industrial silencer according to claim 1, characterized in that: The axes of the first-stage telescopic cylinder, the second-stage telescopic cylinder, the third-stage telescopic cylinder, the airflow inlet, the airflow outlet, and the telescopic end of the telescopic power mechanism are parallel in their telescopic directions.

5. An adjustable industrial silencer according to claim 1, characterized in that: The inner diameter of the outlet end of the three-stage telescopic cylinder is smaller than the inner diameter of the airflow outlet.

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