A noise reduction device for air compressors used in oxygen plants

Abstract

This utility model discloses a noise reduction device for an air compressor used in an oxygen production plant, relating to the field of air compressor technology. The utility model includes a base frame, with a shock-absorbing mechanism on top of the base frame. An air compressor body is mounted on top of the shock-absorbing mechanism, and a silencing mechanism is connected to the bottom of one side of the air compressor body. The silencing mechanism includes a connecting plate, one side of which is connected to the air compressor body. This utility model uses an inner liner pipe within the intake pipe cavity to guide the high-speed airflow, preventing disordered airflow impacting the pipe wall and generating secondary noise. This reduces noise generation at the source of aerodynamic noise. Simultaneously, the inner liner pipe is fixedly connected to the intake pipe via reinforcing blocks, effectively weakening the vibration impact of airflow impact on the pipeline and preventing pipeline loosening. This ensures the air compressor's intake efficiency, avoids vibration exacerbating structural noise, extends pipeline service life, and is suitable for the high-load operating conditions of oxygen production plants.

Description

Technical Field

[0001] This utility model belongs to the field of air compressor technology, and in particular relates to a noise reduction device for an air compressor used in oxygen production plants. Background Technology

[0002] The oxygen production process is highly dependent on air compressors, whose continuous, stable, and efficient operation is the cornerstone of ensuring oxygen production output and quality. However, air compressors generate high-intensity noise during operation, which not only disrupts the working environment inside the oxygen plant, causing workers to be exposed to high-decibel environments for extended periods and facing occupational health risks such as hearing damage, but also may cause noise pollution to surrounding communities, leading to neighborhood disputes and hindering the sustainable operation of the enterprise.

[0003] A Chinese patent application with publication number CN220487787U discloses an air compressor noise reduction device, including a mounting base and a noise reduction mechanism disposed on the outer wall of the mounting base. This invention addresses the issue of air compressors generating significant vibration and noise during daily use, which can be harmful to operators over extended periods. The noise is effectively absorbed by the sound-absorbing cotton, and the heat dissipation plate effectively cools the interior of the noise reduction box. This improved noise reduction and heat dissipation during prolonged use of the air compressor, enhancing its control over noise reduction and heat dissipation when in contact with external components.

[0004] The noise reduction method of the above-mentioned noise reduction device mainly relies on the sound-absorbing cotton in the noise reduction box. The connection of its air intake pipe lacks a reinforced structure. Long-term impact from high-speed airflow can easily cause pipe vibration. This vibration will not only be transmitted to the air compressor body and base frame, aggravating structural noise, but may also cause the pipe connection to loosen and leak, affecting the air compressor's air intake efficiency. At the same time, traditional vibration reduction structures cannot adjust the vibration reduction effect according to the weight of the air compressor body and the intensity of operating vibration.

[0005] To address this issue, we provide a noise reduction device for air compressors used in oxygen production plants. Utility Model Content

[0006] The purpose of this utility model is to provide a noise reduction device for an air compressor used in an oxygen plant. By combining a vibration damping mechanism and a silencing mechanism, it solves the problem that the air compressor intake pipe connection part lacks a reinforced structure, is prone to pipe vibration due to long-term impact from high-speed airflow, and exacerbates structural noise. Traditional vibration damping structures cannot adjust the vibration damping effect.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0008] This utility model relates to a noise reduction device for an air compressor used in an oxygen production plant. It includes a base frame, a shock-absorbing mechanism on the top of the base frame, an air compressor body on top of the shock-absorbing mechanism, and a silencing mechanism connected to the bottom of one side of the air compressor body. The silencing mechanism includes a connecting plate, one side of which is connected to the air compressor body, and another side of which is connected to an air inlet pipe. An inner liner is provided inside the air inlet pipe, and a reinforcing block is fixedly connected to the surface of the inner liner. One side of the reinforcing block is fixedly connected to the air inlet pipe, and a protective cover is connected to one side of the air inlet pipe. An air intake fan is fixedly connected to the inner cavity of the protective cover, and a connecting pipe is connected to one side of the protective cover. The connecting plate and the air inlet pipe form an air intake channel, and the inner liner affects the intake air. The airflow guides the airflow along a pre-set path, reducing disordered impacts between the airflow and the pipe wall. Reinforcing blocks are evenly distributed between the inner liner and the inlet pipe, ensuring the stability of the inner liner within the inlet pipe and preventing it from swaying due to airflow impact. This also enhances the overall structural strength of the inlet pipe, preventing deformation after long-term use. The intake fan, fixed within the protective cover, actively draws in external air, providing ample air supply to the air compressor and ensuring its normal operation. The guiding function of the inner liner ensures smooth airflow through the inlet pipe, preventing disordered impacts with the pipe wall and reducing aerodynamic noise. This reduces noise generation at the air intake source, prevents airflow leakage from affecting intake efficiency, and ensures the air compressor always receives a sufficient air supply, meeting the continuous operation requirements of the oxygen plant.

[0009] The present invention is further configured such that a fixing plate is fixedly connected to one side of the inner cavity of the protective cover, and an mounting plate is fixedly connected to one side of the air intake pipe. The mounting plate and the fixing plate are fixedly connected by bolts, thereby realizing the docking of the protective cover and the air intake pipe, ensuring the airtightness of the air intake channel, and avoiding airflow leakage that would generate additional noise.

[0010] The present invention is further configured such that the shock absorption mechanism includes a support plate, and there are two support plates. The bottom of the support plate is fixedly connected to the base frame, and the top of the base frame is fixedly connected to a screw. A spring is sleeved on the surface of the screw, and the top of the spring contacts the support plate. The screw is sleeved with a spring, and the top of the spring contacts the support plate. The spring absorbs the vibration generated during the operation of the air compressor through its own elastic deformation, weakens the transmission of vibration to the base frame and the ground, and reduces the structural noise caused by vibration.

[0011] The present invention is further configured such that the top of the screw extends through to the top of the support plate, and a fastener is threadedly connected to the top of the screw surface. By rotating the fastener, the compression of the spring can be adjusted, thereby flexibly adjusting the damping effect according to the weight of the air compressor body and the intensity of operating vibration, thus solving the problem that traditional fixed damping structures cannot adapt to different working conditions.

[0012] The present invention is further configured such that positioning grooves are provided at the four corners of the top of the support plate, and the top of the support plate is fixedly connected to the air compressor body through the positioning grooves. The positioning grooves play a positioning role for the air compressor body. When installing the air compressor, it can be quickly aligned and fixed with the support plate without repeated adjustments, thereby improving installation efficiency.

[0013] The present invention is further configured such that sound insulation panels are fixedly connected to both sides of the air compressor body. The sound insulation panels are symmetrically arranged and form a two-way sound insulation barrier, which directly blocks the mechanical noise generated by the operation of the motor inside the air compressor from spreading to both sides, thereby reducing the impact of noise on the surrounding working environment.

[0014] The present invention is further configured such that a soundproof door is hinged to the surface of the air compressor body, and a sealing strip is provided on the surface of the soundproof door. The soundproof door, which is hinged, is easy for staff to open to inspect the internal components of the air compressor without disassembling the overall structure, thus reducing the difficulty of maintenance operations.

[0015] The present invention has the following beneficial effects.

[0016] 1. This utility model uses an inner liner tube installed inside the intake pipe to guide the high-speed airflow, avoiding the disorderly impact of airflow on the pipe wall and generating secondary noise. This reduces noise generation at the source of aerodynamic noise. At the same time, the inner liner tube is fixedly connected to the intake pipe by a reinforcing block, which can effectively weaken the impact of airflow impact on the pipeline vibration and prevent pipeline loosening. This ensures the intake efficiency of the air compressor, avoids vibration from aggravating structural noise, extends the service life of the pipeline, and is suitable for the high-load operation conditions of oxygen plants.

[0017] 2. This utility model combines a screw, a spring, and a support plate, along with fasteners at the top of the screw. The spring compression is adjusted according to the weight of the air compressor body and the vibration intensity to ensure stable shock absorption. At the same time, the positioning groove at the top of the support plate is used to fix the air compressor body, preventing positioning deviation from aggravating vibration. This solves the problems of poor adjustability and insufficient adaptability of existing shock absorption structures. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a three-dimensional diagram of a noise reduction device for an air compressor used in an oxygen production plant.

[0020] Figure 2 This is a side perspective view of a noise reduction device for an air compressor used in an oxygen production plant.

[0021] Figure 3 This is a three-dimensional view of the vibration damping mechanism in a noise reduction device for an air compressor used in an oxygen plant.

[0022] Figure 4 This is a three-dimensional view of the air intake pipe in a noise reduction device for an air compressor used in an oxygen plant.

[0023] Figure 5 This is a perspective view of a protective cover in a noise reduction device for an air compressor used in an oxygen plant.

[0024] Figure 6 This is a bottom-view perspective view of a support plate in a noise reduction device for an air compressor used in an oxygen plant.

[0025] In the attached diagram: 1. Base frame; 2. Shock absorption mechanism; 21. Support plate; 22. Screw; 23. Spring; 3. Air compressor body; 4. Silencing mechanism; 41. Connecting plate; 42. Inlet pipe; 43. Inner liner pipe; 44. Reinforcing block; 45. Protective cover; 46. Inlet fan; 47. Connecting pipe; 5. Fixing plate; 6. Mounting plate; 7. Fastener; 8. Positioning groove; 9. Sound insulation board; 10. Soundproof door. Detailed Implementation

[0026] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1 Please see Figure 1-6 This utility model is a noise reduction device for an air compressor used in an oxygen plant. It includes a base frame 1, a shock absorption mechanism 2 on the top of the base frame 1, an air compressor body 3 on the top of the shock absorption mechanism 2, a silencing mechanism 4 connected to the bottom of one side of the air compressor body 3, the silencing mechanism 4 including a connecting plate 41, one side of the connecting plate 41 connected to the air compressor body 3, one side of the connecting plate 41 connected to an air inlet pipe 42, an inner liner pipe 43 provided in the inner cavity of the air inlet pipe 42, a reinforcing block 44 fixedly connected to the surface of the inner liner pipe 43, one side of the reinforcing block 44 fixedly connected to the air inlet pipe 42, a protective cover 45 connected to one side of the air inlet pipe 42, an air intake fan 46 fixedly connected to the inner cavity of the protective cover 45, and a connecting pipe 47 connected to one side of the protective cover 45.

[0028] Specifically: the connecting plate 41 is connected to the intake pipe 42 to form an air intake channel. The inner liner pipe 43 guides the incoming airflow, allowing it to flow smoothly along a preset path and reducing disordered impacts between the airflow and the pipe wall. The reinforcing blocks 44 are evenly distributed between the inner liner pipe 43 and the intake pipe 42, ensuring the stability of the inner liner pipe 43 within the intake pipe 42 and preventing it from shaking due to airflow impact. They also enhance the overall structural strength of the intake pipe 42, preventing pipe deformation after long-term use. The intake fan 46 is fixed inside the protective cover 45 and actively draws in external air to provide sufficient air supply for the air compressor body 3, ensuring its normal operation. The guiding function of the inner liner pipe 43 allows the airflow to pass smoothly through the intake pipe 42, preventing disordered impacts between the airflow and the pipe wall that would generate aerodynamic noise. This reduces noise generation from the air intake source, prevents airflow leakage from affecting intake efficiency, and ensures that the air compressor body 3 always receives sufficient air supply to meet the oxygen plant's continuous operation requirements for the air compressor.

[0029] Example 2 Please see Figure 1-6 Based on Embodiment 1, a fixing plate 5 is fixedly connected to one side of the inner cavity of the protective cover 45, and an mounting plate 6 is fixedly connected to one side of the air intake pipe 42. The mounting plate 6 and the fixing plate 5 are fixedly connected by bolts. The shock absorption mechanism 2 includes a support plate 21, and there are two support plates 21. The bottom of the support plate 21 is fixedly connected to the base frame 1. A screw 22 is fixedly connected to the top of the base frame 1. A spring 23 is sleeved on the surface of the screw 22. The top of the spring 23 contacts the support plate 21. The top of the screw 22 extends through to the top of the support plate 21. A fastener 7 is threadedly connected to the top of the surface of the screw 22. Positioning grooves 8 are opened at the four corners of the top of the support plate 21. The top of the support plate 21 is fixedly connected to the air compressor body 3 through the positioning grooves 8. Sound insulation plates 9 are fixedly connected to both sides of the air compressor body 3. The sound insulation plates 9 are symmetrically arranged. A sound insulation door 10 is hinged to the surface of the air compressor body 3. A sealing strip is provided on the surface of the sound insulation door 10.

[0030] Specifically: The fixing plate 5 and the mounting plate 6 are fixed with bolts, realizing the connection between the protective cover 45 and the air intake pipe 42, ensuring the air intake channel is sealed and preventing air leakage from generating additional noise. The screw 22 is fitted with a spring 23, and the top of the spring 23 contacts the support plate 21. The spring 23 absorbs the vibration generated during the operation of the air compressor through its own elastic deformation, weakening the transmission of vibration to the base frame 1 and the ground, and reducing the structural noise caused by vibration. The compression of the spring 23 can be adjusted by rotating the fastener 7, thereby flexibly adjusting the vibration damping according to the weight of the air compressor body 3 and the intensity of operating vibration. The effect solves the problem that traditional fixed shock absorption structures cannot adapt to different working conditions. The positioning groove 8 plays a positioning role for the air compressor body 3. When installing the air compressor, it can be quickly aligned and fixed with the support plate 21 without repeated adjustments, improving installation efficiency. The sound insulation plate 9 forms a two-way sound insulation barrier, directly blocking the mechanical noise generated by the internal motor of the air compressor from spreading to both sides, reducing the impact of noise on the surrounding working environment. The sound insulation door 10, which is hinged, makes it easy for staff to open and inspect the internal components of the air compressor without disassembling the overall structure, reducing the difficulty of maintenance operations.

[0031] The working principle of this utility model is as follows: When the air compressor body 3 is started, the intake fan 46 starts to work and actively draws in air from the outside. The air enters the protective cover 45 through the connecting pipe 47 and then flows to the intake pipe 42. The inner liner pipe 43 plays a directional guiding role for the airflow, so that the air flows smoothly along the preset path and avoids the high-speed airflow from randomly hitting the pipe wall of the intake pipe 42 and generating aerodynamic noise. In addition, the protective cover 45 and the intake pipe 42 are tightly connected by the fixing plate 5, the mounting plate 6 and the bolts to ensure the airtightness of the intake channel, prevent airflow leakage and noise generation, and ensure that air continuously enters the air compressor body 3 through the connecting plate 41.

[0032] When the air compressor body 3 is running, it will generate vibration. The vibration is transmitted to the support plate 21 through the bottom. The spring 23 on the surface of the screw 22 undergoes elastic deformation due to the force. It absorbs the vibration energy through its own extension and contraction, weakens the transmission of vibration to the base frame 1 and the ground, and avoids the generation of secondary noise through the transmission of vibration through the structure. The fastener 7 at the top of the screw 22 can fix the position of the support plate 21 and prevent the support plate 21 from moving up and down due to vibration, ensuring that the spring 23 always maintains a stable shock absorption effect.

[0033] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A noise reduction device for an air compressor used in an oxygen production plant, comprising a base frame (1), characterized in that: The top of the base frame (1) is provided with a shock-absorbing mechanism (2), the top of the shock-absorbing mechanism (2) is provided with an air compressor body (3), and the bottom of one side of the air compressor body (3) is connected to a noise-reducing mechanism (4). The silencing mechanism (4) includes a connecting plate (41), one side of which is connected to the air compressor body (3), and one side of which is connected to an air intake pipe (42). The inner cavity of the air intake pipe (42) is provided with an inner liner pipe (43), and a reinforcing block (44) is fixedly connected to the surface of the inner liner pipe (43). One side of the reinforcing block (44) is fixedly connected to the air intake pipe (42), and one side of the air intake pipe (42) is connected to a protective cover (45). The inner cavity of the protective cover (45) is fixedly connected to an air intake fan (46), and one side of the protective cover (45) is connected to a connecting pipe (47).

2. The noise reduction device for an air compressor used in an oxygen production plant according to claim 1, characterized in that: A fixing plate (5) is fixedly connected to one side of the inner cavity of the protective cover (45), and an mounting plate (6) is fixedly connected to one side of the air inlet pipe (42). The mounting plate (6) and the fixing plate (5) are fixedly connected by bolts.

3. The noise reduction device for an air compressor used in an oxygen production plant according to claim 1, characterized in that: The shock absorption mechanism (2) includes a support plate (21), and there are two support plates (21). The bottom of the support plate (21) is fixedly connected to the base frame (1), and the top of the base frame (1) is fixedly connected to a screw (22). A spring (23) is sleeved on the surface of the screw (22), and the top of the spring (23) is in contact with the support plate (21).

4. The noise reduction device for an air compressor used in an oxygen production plant according to claim 3, characterized in that: The top of the screw (22) extends through to the top of the support plate (21), and a fastener (7) is threaded onto the top of the surface of the screw (22).

5. The noise reduction device for an air compressor used in an oxygen production plant according to claim 3, characterized in that: The support plate (21) has positioning grooves (8) at the four corners of its top, and the top of the support plate (21) is fixedly connected to the air compressor body (3) through the positioning grooves (8).

6. The noise reduction device for an air compressor used in an oxygen production plant according to claim 1, characterized in that: The air compressor body (3) is fixedly connected to both sides with sound insulation plates (9), and the sound insulation plates (9) are arranged symmetrically.

7. The noise reduction device for an air compressor used in an oxygen production plant according to claim 1, characterized in that: The surface of the air compressor body (3) is hinged to a soundproof door (10), and the surface of the soundproof door (10) is provided with a sealing strip.

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