Silencing air inlet air filter

Abstract

The utility model relates to the technical field of air compression, in particular to a silencing air inlet air filter. In order to solve the problem that an existing gear centrifugal air compressor is large in noise, the utility model provides a silencing air inlet air filter which is characterized in that an air inlet and an air outlet are formed in a box body; a horizontal partition plate is arranged in the middle of the box body and divides an inner cavity of the box body into a filtering cavity and a silencing cavity, and the filtering cavity is located above the silencing cavity. A vertical supporting plate is arranged in the filtering cavity and divides the filtering cavity into a filtering air inlet cavity and a filtering air outlet cavity, a plurality of air filtering elements are fixedly installed on the vertical supporting plate, and the air filtering elements are located in the filtering air inlet cavity; the filtering air inlet cavity is communicated with the silencing cavity through a filtering air inlet in the horizontal partition plate, and the filtering air outlet cavity is communicated with an air outlet communicating pipe. And a silencing baffle plate is arranged in the silencing cavity to divide the silencing cavity into a silencing flow guide channel communicated with the filtering air inlet and the air inlet. By the adoption of the silencing air inlet air filter, the noise reduction effect can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air compression technical field especially relates to a sound attenuation air intake air filter. BACKGROUND

[0002] The gear centrifugal air compressor can produce huge air power noise when working, and influences the use experience. At present, in order to control noise, usually, sound attenuation structure is arranged at the air intake end of the gear centrifugal air compressor to reduce noise. However, since the air intake amount of the gear centrifugal air compressor is large, and the existing sound attenuation structure is generally independent assembly of air filter and silencer, the problem of insufficient installation space is prone to occur, and then air secondary pollution and unstable sound attenuation effect are prone to occur. In addition, even if the design of sound attenuation air filter integration is adopted, the air filter cartridge is used as sound absorption material, which can cause the problems of short gas flow channel and poor sound absorption effect. SUMMARY

[0003] In order to solve the problem of large noise of the existing gear centrifugal air compressor, the utility model provides a sound attenuation air intake air filter, which comprises a box body, an air inlet and an air outlet are arranged on the box body, the air inlet is close to the bottom of the box body, and the air outlet is close to the top of the box body, a horizontal partition plate is arranged in the middle of the box body, the horizontal partition plate divides the inner cavity of the box body into a filter cavity and a sound attenuation cavity, and the filter cavity is located above the sound attenuation cavity, a vertical support plate is arranged in the filter cavity, the vertical support plate divides the filter cavity into a filter air inlet cavity and a filter air outlet cavity, a plurality of air filter cartridges are fixedly installed on the vertical support plate, and the air filter cartridges are located in the filter air inlet cavity, the filter air inlet cavity is communicated with the sound attenuation cavity through a filter air inlet on the horizontal partition plate, the filter air outlet cavity is communicated with the air outlet, a sound attenuation baffle plate is arranged in the sound attenuation cavity, and the sound attenuation baffle plate divides the sound attenuation cavity into a sound attenuation flow guide channel communicated with the filter air inlet and the air inlet. The sound attenuation baffle plate is arranged in the sound attenuation cavity at the bottom of the box body of the utility model sound attenuation air intake air filter to form a sound attenuation flow guide channel, which can effectively improve the noise reduction effect. In addition, the utility model sound attenuation air intake air filter integrates the silencer and the air filter, which can effectively solve the problem of insufficient installation space caused by independent assembly of the silencer and the air filter of the existing sound attenuation structure, thereby avoiding the problems of air secondary pollution and unstable sound attenuation effect caused by independent assembly of the silencer and the air filter of the existing sound attenuation structure.

[0004] Preferably, the sound attenuation flow guide channel is a Z-shaped structure. In this way, the sound attenuation flow guide channel in the utility model sound attenuation air intake air filter is arranged in a Z-shaped structure, which can effectively prolong the length of the sound attenuation flow guide channel, thereby prolonging the passing time of the airflow in the sound attenuation flow guide channel, and further improving the sound attenuation effect.

[0005] Preferably, the sound-absorbing baffle comprises upper and lower mesh plates arranged in parallel to each other, and a sound-absorbing layer is arranged between the upper and lower mesh plates. In this way, the sound-absorbing layer in the sound-absorbing baffle can absorb noise when the air flow passes through the sound-absorbing guide channel, thereby greatly improving the noise reduction effect of the sound-absorbing air intake filter. Further, the sound-absorbing layer is formed of sound-absorbing material. In this way, the sound-absorbing layer is formed of sound-absorbing material, which can effectively ensure the sound-absorbing effect of the sound-absorbing layer, thereby improving the noise reduction effect of the sound-absorbing air intake filter.

[0006] Preferably, the box comprises a frame structure and a sound-absorbing cover plate, the sound-absorbing cover plate is arranged on the periphery of the frame structure; the sound-absorbing cover plate comprises an outer cover plate, an inner mesh plate and a cover plate sound-absorbing layer, the cover plate sound-absorbing layer is arranged between the outer cover plate and the inner mesh plate. In this way, the sound-absorbing cover plate is arranged on the periphery of the frame structure of the box, so that the sound-absorbing layer is arranged on each surface of the sound-absorbing guide channel formed by the sound-absorbing cover plate and the sound-absorbing baffle, thereby further improving the noise reduction effect of the sound-absorbing cavity, and preventing the air flow noise in the box from being transmitted outside, thereby reducing the working noise of the sound-absorbing air intake filter. Further, the cover plate sound-absorbing layer is formed of sound-absorbing material. In this way, the cover plate sound-absorbing layer in the sound-absorbing cover plate is formed of sound-absorbing material, which can effectively ensure the sound-absorbing effect of the cover plate sound-absorbing layer, thereby improving the noise reduction effect of the sound-absorbing air intake filter. Further, a sealing strip is arranged at the edge of the sound-absorbing cover plate. In this way, the sealing strip arranged at the edge of the sound-absorbing cover plate is used to seal the joint between the sound-absorbing cover plate and the frame structure when the sound-absorbing cover plate is arranged on the frame structure of the box, thereby avoiding secondary pollution of the air in the box, and preventing the air flow noise in the box from leaking from the edge of the sound-absorbing cover plate, thereby reducing the working noise of the sound-absorbing air intake filter.

[0007] Preferably, a coarse filter screen is arranged at the air inlet. In this way, the coarse filter screen is arranged at the air inlet to coarsely filter the air entering the sound-absorbing air intake filter, thereby preventing large particles of impurities in the air from entering the box of the sound-absorbing air intake filter, or even entering the air filter element in the sound-absorbing air intake filter, thereby affecting the use effect and service life of the sound-absorbing air intake filter. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 FIG. 1 is a first angle structural schematic view of the sound-absorbing air intake filter of the present application;

[0009] Figure 2 FIG. 2 is a second angle structural schematic view of the sound-absorbing air intake filter of the present application;

[0010] Figure 3 FIG. 3 is a structural schematic view of the sound-absorbing air intake filter of the present application; Figure 2 FIG. 4 is a A-A sectional view of the sound-absorbing air intake filter of the present application.

[0011] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of Q in the diagram;

[0012] Figure 5 for Figure 2 A schematic diagram of the BB cross-sectional structure. Detailed Implementation

[0013] Below, in conjunction with Figures 1 to 5 This article provides a detailed description of the noise-reducing air intake filter of this utility model.

[0014] like Figures 1 to 3 As shown in Figure 5, the noise-reducing air filter of this utility model includes a housing 1, on which an air inlet 101 and an air outlet 102 are provided. The air inlet 101 is near the bottom of the housing 1, and the air outlet 102 is near the top of the housing 1. Preferably, the housing 1 includes a frame structure 11 and a noise-reducing cover 12, which covers the periphery of the frame structure 11. The noise-reducing cover 12 includes an outer protective plate (not shown in the figure), an inner perforated plate (not shown in the figure), and a cover noise-reducing layer (not shown in the figure), which is sandwiched between the outer protective plate and the inner perforated plate. Thus, by covering the frame structure 11 of the housing 1 with a sound-absorbing cover plate 12, the airflow noise inside the housing can be prevented from being transmitted outward, reducing the working noise of the present invention's sound-absorbing air filter. Furthermore, the sound-absorbing layer in the cover plate 12 can absorb the dynamic noise generated when the airflow flows within the housing 1 of the present invention's sound-absorbing air filter, thereby improving the noise reduction effect of the present invention's sound-absorbing air filter. Preferably, the cover plate sound-absorbing layer is formed of sound-absorbing materials such as sound-absorbing cotton or felt. In this way, using sound-absorbing materials to form the cover plate sound-absorbing layer in the sound-absorbing cover plate can effectively ensure the absorption effect of the cover plate sound-absorbing layer, thereby improving the noise reduction effect of the present invention's sound-absorbing air filter. Preferably, a sealing strip (not shown in the figure) is provided at the edge of the sound-absorbing cover plate 12. Thus, when the silencer cover 12 is wrapped around the frame structure 11 of the housing 1, the sealing strip at the edge of the silencer cover 12 seals the joint between the silencer cover 12 and the frame structure 11. This not only prevents secondary air pollution inside the housing 1, but also allows airflow noise inside the housing 1 to leak out from the edge of the silencer cover 12, reducing the operating noise of the silencer air intake filter of this utility model. Preferably, a coarse filter screen (not shown in the figure) is provided at the air inlet 101. This coarse filter screen at the air inlet 101 coarsely filters the air entering the silencer air intake filter of this utility model, preventing large particles of impurities in the air from entering the housing 1 of the silencer air intake filter, or even entering the silencer air intake filter itself, thus affecting its performance and service life.

[0015] like Figures 2 to 5As shown, the middle part of the box 1 is provided with a horizontal partition plate 13, which divides the inner cavity of the box 1 into a filtering cavity (not shown in the figure) and a sound attenuation cavity (not shown in the figure), and the filtering cavity is located above the sound attenuation cavity. A vertical support plate 14 is arranged in the filtering cavity, which divides the filtering cavity into a filtering air inlet cavity 103 and a filtering air outlet cavity 104, and a plurality of air filter cartridges 15 are fixedly installed on the vertical support plate 14, and the air filter cartridges 15 are located in the filtering air inlet cavity 103; the filtering air inlet cavity 103 is communicated with the sound attenuation cavity through a filtering air inlet 131 on the horizontal partition plate 13, and the filtering air outlet cavity 104 is communicated with an air outlet 102; a sound attenuation baffle 16 is arranged in the sound attenuation cavity, which divides the sound attenuation cavity into a sound attenuation flow guide channel 105 connected with the filtering air inlet 131 and the air inlet 101. The sound attenuation air filter of the utility model sets the sound attenuation baffle 16 in the sound attenuation cavity at the bottom of the box 1 to form the sound attenuation flow guide channel 105 to limit and attenuate the airflow entering the sound attenuation air filter, which can effectively improve the noise reduction effect. In addition, the sound attenuation air filter integrates the sound attenuator and the air filter, which can effectively solve the problem of insufficient installation space caused by independent assembly of the sound attenuator and the air filter, thereby avoiding the problems of air secondary pollution and unstable sound attenuation effect caused by independent assembly of the sound attenuator and the air filter. Preferably, the sound attenuation flow guide channel 105 is a Z-shaped structure. In this way, the sound attenuation flow guide channel 105 in the sound attenuation air filter is arranged in a Z-shaped structure, which can effectively prolong the length of the sound attenuation flow guide channel 105, thereby prolonging the passing time of the airflow in the sound attenuation flow guide channel 105, and further improving the sound attenuation effect. Preferably, the sound attenuation baffle 16 comprises upper and lower mesh hole plates 161 and 162 arranged in parallel, and a flow deflection sound attenuation layer 163 is interposed between the upper and lower mesh hole plates 161 and 162. In this way, when the airflow flows through the sound attenuation flow guide channel 105, the flow deflection sound attenuation layer 163 in each sound attenuation baffle 16 facing the sound attenuation flow guide channel 105 and the cover sound attenuation layer in the sound attenuation cover plate 12 can all absorb noise, greatly improving the noise reduction effect of the sound attenuation air filter. Preferably, the flow deflection sound attenuation layer 163 is formed of sound attenuation cotton or felt. In this way, the use of sound absorption materials to form the flow deflection sound attenuation layer 163 can effectively ensure the absorption effect of the flow deflection sound attenuation layer 163, thereby improving the sound attenuation and noise reduction effect of the sound attenuation air filter. Preferably, the plurality of air filter cartridges 15 are arranged in an array on the vertical support plate 14. In this way, multiple air filter cartridges 15 are used to filter the airflow at the same time to meet the use requirement of large air intake of the gear centrifugal air compressor; the plurality of air filter cartridges 15 are arranged in an array on the vertical support plate 14, so that the air filter cartridges 15 are uniformly distributed in the filtering air inlet cavity 103, thereby enabling the air filter cartridges 15 to filter the air in each part of the filtering air inlet cavity 103.

Claims

1. A noise-reducing air intake filter, characterized in that, The sound-absorbing air intake filter comprises a box body, an air inlet and an air outlet are arranged on the box body, the air inlet is close to the bottom of the box body, and the air outlet is close to the top of the box body; a horizontal partition plate is arranged in the middle of the box body, the horizontal partition plate divides the inner cavity of the box body into a filtering cavity and a sound-absorbing cavity, and the filtering cavity is located above the sound-absorbing cavity; a vertical support plate is arranged in the filtering cavity, the vertical support plate divides the filtering cavity into a filtering air inlet cavity and a filtering air outlet cavity, a plurality of air filter cartridges are fixedly installed on the vertical support plate, and the air filter cartridges are located in the filtering air inlet cavity; the filtering air inlet cavity is communicated with the sound-absorbing cavity through a filtering air inlet on the horizontal partition plate, and the filtering air outlet cavity is communicated with the air outlet; A sound-absorbing baffle is arranged in the sound-absorbing cavity, and the sound-absorbing baffle divides the sound-absorbing cavity into a sound-absorbing flow guide channel which is communicated with the filtering air inlet and the air inlet.

2. The sound attenuating air cleaner of claim 1, wherein The sound-absorbing flow guide channel is in a Z-shaped structure.

3. The sound attenuating air intake air cleaner of claim 2 wherein, The sound-absorbing baffle comprises an upper mesh plate and a lower mesh plate which are arranged in parallel, and a sound-absorbing layer is arranged between the upper mesh plate and the lower mesh plate.

4. The sound attenuating air intake air cleaner filter of claim 3 wherein, The sound-absorbing layer is formed of sound-absorbing material.

5. The sound attenuating air intake air cleaner of any of claims 1-4, wherein, The box body comprises a frame structure and a sound-absorbing cover plate, the sound-absorbing cover plate covers the periphery of the frame structure; the sound-absorbing cover plate comprises an outer cover plate, an inner mesh plate and a cover plate sound-absorbing layer, and the cover plate sound-absorbing layer is arranged between the outer cover plate and the inner mesh plate.

6. The sound attenuating air intake air cleaner of claim 5 wherein, The cover plate sound-absorbing layer is formed of sound-absorbing material.

7. The sound attenuating air intake air cleaner of claim 5 wherein, Sealing strips are arranged at the edges of the sound-absorbing cover plate.

8. The sound attenuating air intake air cleaner filter of any of claims 1-4, wherein, A coarse filter screen is arranged at the air inlet.

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