An air compressor intake filtration and noise reduction device
By using sliding mounting components and a modularly designed air compressor intake filter silencer, the problems of low filtration efficiency and unsatisfactory noise reduction in traditional devices have been solved, achieving high-efficiency filtration and low-noise operation, and simplifying maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI NANXIANG AIR COMPRESSOR CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-06-30
AI Technical Summary
In traditional air compressor intake systems, the filter device is not very efficient at capturing fine particles and is prone to clogging. The silencer is not ideal in suppressing high-frequency noise and is complicated to maintain and operate, making it difficult to meet the requirements of high-cleanliness intake and low-noise operation.
The filter and noise reduction device, which adopts sliding mounting parts and modular design, includes a dustproof frame and sound-absorbing cotton. The sliding connection enables dynamic adjustment of the airflow channel and multi-stage noise reduction. Combined with the dustproof filter and porous sound-absorbing cotton, it achieves high-efficiency filtration and wide-band noise absorption.
It achieves efficient interception of dust and impurities and wideband noise suppression, ensuring the cleanliness and low noise of the air compressor intake, simplifying the maintenance process, and reducing equipment downtime losses.
Smart Images

Figure CN224432763U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air compressor technology, and in particular to an air compressor intake filtration and noise reduction device. Background Technology
[0002] During the operation of an air compressor, its intake system needs to draw in outside air. However, dust, impurities, and other particulate matter commonly found in the air can directly enter the compressor, causing wear and tear on components, reduced efficiency, and even malfunctions. Traditional solutions often address filtration and noise issues separately. Filtration devices are mostly fixed metal mesh structures, which, while having some interception effect, are not very efficient, especially in capturing fine particles. They are also prone to clogging, leading to increased intake resistance and requiring frequent shutdowns for cleaning or replacement, severely impacting continuous operation and production efficiency. As for intake noise, existing technologies often use simple sound-absorbing materials or simple silencers at the end of the airflow channel. These silencers have a narrow frequency band and are not ideal for suppressing high-frequency noise. Replacing and maintaining silencers often requires disassembling parts of the housing or pipes, which is complex, time-consuming, and labor-intensive. At the same time, fixed structures and independently installed filter and silencer modules occupy a lot of space, and the airflow path design is not optimized, limiting the overall noise reduction and filtration efficiency of the system. This makes it difficult to meet the growing demands of modern industry for high-cleanliness air intake, low-noise operation, and convenient maintenance.
[0003] Therefore, in order to address the above problems, an air compressor intake filtration and noise reduction device is now being developed. Utility Model Content
[0004] In order to overcome the shortcomings of the existing technology, this utility model provides an air compressor intake filtration and noise reduction device.
[0005] The technical solution of this utility model is: an air compressor intake filter and silencer device, including a mounting frame, a first silencer hole on the mounting frame, a mounting component slidably connected inside the mounting frame, a hole on the mounting component, the hole corresponding to the position of the first silencer hole, and an auxiliary silencer component provided on the mounting component.
[0006] Furthermore, the auxiliary noise reduction component includes a fixing frame, the fixing frame is provided on the mounting component, the noise reduction cotton is slidably provided on the fixing frame, and the fixing frame is provided with a first guide strip, the first guide strip is engaged and aligned with the noise reduction cotton to position and fix the noise reduction cotton.
[0007] Furthermore, it also includes a filter assembly, which includes a dustproof frame. The dustproof frame is slidably connected to the outside of the mounting frame. A guide groove is opened on the inside of the dustproof frame. A second guide bar corresponding to the number of guide grooves is provided on the outside of the mounting frame. The second guide bar is engaged with the corresponding guide groove.
[0008] Furthermore, the mounting component has two handles on its front side.
[0009] Furthermore, the sound-absorbing cotton has a second sound-absorbing hole, which corresponds to the position of the first sound-absorbing hole.
[0010] Furthermore, a dust filter screen is provided on the dustproof frame.
[0011] By adopting the above technical solution, the beneficial effects of this utility model are as follows:
[0012] This utility model achieves superior dust and impurity interception and wideband noise absorption and suppression through the synergistic effect of a high-efficiency dust filter, a precision perforated structure, and porous sound-absorbing cotton. This ensures the cleanliness of the air entering the air compressor, significantly reduces noise pollution in the working environment, and the modular design greatly shortens maintenance time, effectively reducing equipment downtime losses. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the first three-dimensional structure of this utility model.
[0014] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention.
[0015] Figure 3 This is a schematic diagram of the partially exploded three-dimensional structure of this utility model.
[0016] Figure 4 This is a partial structural schematic diagram of the present invention.
[0017] Figure 5 This is a partial exploded three-dimensional structural diagram of the auxiliary noise reduction component of this utility model.
[0018] Figure 6 This is a partially exploded three-dimensional structural diagram of the filter assembly of this utility model.
[0019] The component names and serial numbers in the figure are as follows: 1_Mounting frame, 2_First silencing hole, 3_Mounting component, 4_Auxiliary silencing assembly, 41_Silencing cotton, 42_Second silencing hole, 43_Fixing bracket, 44_First guide strip, 5_Filter assembly, 51_Dustproof frame, 52_Guide groove, 53_Second guide strip. Detailed Implementation
[0020] The preferred technical solution of this utility model will be described in detail below with reference to the accompanying drawings.
[0021] An air compressor intake filter and silencer device, such as Figures 1-6As shown, the device includes a mounting frame 1 with a first silencing hole 2. A mounting component 3 is slidably connected inside the mounting frame 1. The mounting component 3 has holes that correspond to the positions of the first silencing hole 2. Two handles are provided on the front side of the mounting component 3. An auxiliary silencing component 4 is provided on the mounting component 3. The auxiliary silencing component 4 includes a fixing frame 43. The mounting component 3 is provided with the fixing frame 43. A silencing cotton 41 is slidably mounted on the fixing frame 43. The fixing frame 43 has a first guide strip 44. The first guide strip 44 engages with the silencing cotton 41 to position and fix the silencing cotton 41. A second silencing hole 42 is provided on the silencing cotton 41, and the second silencing hole 42 corresponds to the position of the first silencing hole 2.
[0022] It also includes a filter assembly 5, which includes a dustproof frame 51. The dustproof frame 51 is slidably connected to the outside of the mounting frame 1. A dustproof filter screen is provided on the dustproof frame 51. A guide groove 52 is opened on the inside of the dustproof frame 51. A second guide bar 53 corresponding to the number of guide grooves 52 is provided on the outside of the mounting frame 1. The second guide bar 53 is engaged with the corresponding guide groove 52.
[0023] It should be noted that the working principle of this air compressor intake filter silencer begins with air entering the system through the dustproof frame 51. The dustproof frame 51 is slidably connected to the outside of the mounting frame 1. The dustproof filter screen on its surface first performs primary filtration of the intake air, intercepting larger dust particles and impurities. The inner side of the dustproof frame 51 has a guide groove 52, which precisely engages with the second guide strip 53 on the outside of the mounting frame 1, ensuring that the dustproof frame 51 slides along a predetermined trajectory during maintenance and disassembly, maintaining the structural alignment stability with the mounting frame 1. The airflow after preliminary filtration then penetrates the dustproof filter screen and enters the device. The mounting component 3 and the mounting frame 1 form a cooperative silencer structure. The mounting frame 1, as the fixed main body, has an array of first... The first silencer hole 2 is located inside the mounting frame 1, and the mounting component 3, which is slidably connected to the mounting frame 1, aligns with the first silencer hole 2 through holes opened on it. This dynamic nesting design allows the operator to adjust the alignment of the holes with the first silencer hole 2 by pulling the mounting component 3 back and forth with the handle, making the mounting component 3 slide smoothly within the mounting frame 1. This allows for fine-tuning of the airflow channel cross-section or acoustic impedance matching without interrupting equipment operation, achieving active noise reduction adjustment. The handles on both sides of the mounting component 3 provide stable force application points, ensuring convenient manual operation and uniform force distribution. During the noise reduction process, when the airflow passes through the aligned holes and the first silencer hole 2, the sound wave energy is repeatedly refracted and interfered within the cavity structure, and some of the sound energy is converted into heat energy and consumed. This is the first stage of noise reduction. Next, the airflow contacts the sound-absorbing cotton 41 of the auxiliary noise reduction component 4. The sound-absorbing cotton 41 is securely mounted on the mounting component 3 via a fixing bracket 43. The first guide strip 44 configured on the fixing bracket 43 and the snap-fit alignment structure with the edge of the sound-absorbing cotton 41 allow for precise positioning and easy replacement of the sound-absorbing cotton 41. The surface of the sound-absorbing cotton 41 also has second sound-absorbing holes 42 corresponding to the first sound-absorbing holes 2, ensuring that the airflow continues to move forward in the continuous path. Simultaneously, the porous fiber structure of the sound-absorbing cotton 41 forces the airflow to generate intense frictional vibrations, further efficiently absorbing mid-to-high frequency sound wave energy and converting it into heat energy dissipation, completing the deep noise reduction treatment. The entire device, through the dual protection of the filter component 5 and the noise reduction component, ensures that the incoming air pressure... The airflow of the machine simultaneously meets the requirements of cleanliness and low noise. When the dust filter accumulates impurities due to long-term use, causing an increase in pressure drop, the operator can slide and pull out the dust frame 51 along the direction of the second guide bar 53 for cleaning or replacement. If the sound absorption cotton 41 has reduced sound absorption efficiency due to oil adsorption, the operator can pull out the mounting part 3 by the handle, pull out the old sound absorption cotton 41 along the first guide bar 44, and replace it with a new part. All maintenance operations do not require disassembling the main structure or using additional tools, which greatly improves the efficiency and practicality of equipment operation and maintenance. Finally, the clean and low-noise airflow that has completed filtration, purification, and multi-stage noise reduction is stably delivered to the air compressor inlet through the rear side of the mounting frame 1, which significantly reduces the noise pollution level of the intake system while ensuring the efficient operation of the equipment.
[0024] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the present invention and should not be construed as limiting the scope of protection of the present invention in any way. Based on this explanation, those skilled in the art can conceive of other specific embodiments of the present invention without creative effort, and these embodiments will all fall within the scope of protection of the present invention.
Claims
1. An air compressor intake filter silencer device, characterized by, It includes a mounting frame (1), on which a first silencing hole (2) is opened, and a mounting component (3) is slidably connected inside the mounting frame (1). The mounting component (3) has a hole, which corresponds to the position of the first silencing hole (2). An auxiliary silencing component (4) is provided on the mounting component (3).
2. The air compressor intake filter silencer device of claim 1, wherein, The auxiliary noise reduction component (4) includes a fixing frame (43). The fixing frame (43) is provided on the mounting component (3). The noise reduction cotton (41) is slidably provided on the fixing frame (43). The fixing frame (43) has a first guide strip (44). The first guide strip (44) is engaged and aligned with the noise reduction cotton (41) to position and fix the noise reduction cotton (41).
3. The air compressor intake filter silencer device of claim 2, wherein, It also includes a filter assembly (5), which includes a dustproof frame (51). The dustproof frame (51) is slidably connected to the outside of the mounting frame (1). A guide groove (52) is opened on the inside of the dustproof frame (51). A second guide bar (53) corresponding to the number of guide grooves (52) is provided on the outside of the mounting frame (1). The second guide bar (53) is engaged with the corresponding guide groove (52).
4. The air compressor intake filter silencer of claim 1, wherein, The mounting component (3) has two handles on its front side.
5. The air compressor intake filter silencer of claim 2, wherein, The sound-absorbing cotton (41) has a second sound-absorbing hole (42), which corresponds to the position of the first sound-absorbing hole (2).
6. The air compressor intake filter and silencer according to claim 3, characterized in that, The dustproof frame (51) is equipped with a dustproof filter screen.