Silencing device of air filter

Abstract

The silencer of the air filter comprises an air inlet cover, a dust removal cylinder, a filter element seat and an exhaust cover, a conical flow guide cover is arranged at one end in the dust removal cylinder, the conical flow guide cover is fixedly connected to the conical flow guide cover through an arranged connecting rod, and a sponge sound absorption cylinder is connected to the other end in the dust removal cylinder in an embedded mode. The device has the beneficial effects that filtered gas is input into the dispersion box through the gas collecting pipe, the dispersion box inputs the filtered gas into the connected silencing assembly through the plurality of dispersion pipelines, and the foamed plastic rings arranged on the silencing assembly can perform secondary silencing on the gas, so that the silencing effect is improved, and the noise is reduced. And finally, the gas is exhausted into the exhaust hood from the interior of the silencing assembly, the arranged polyester fiber cylinder can filter the gas for the third time, the filtered gas is output through the exhaust hole, the structure is reasonable, dismounting and mounting are convenient, and meanwhile the better silencing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air filters, in particular to a silencing device for an air filter. Background Technique

[0002] An air filter is a device used to remove particulate impurities from the air. When piston machinery (internal combustion engines, reciprocating compressors, etc.) operates, if the inhaled air contains impurities such as dust, it will exacerbate the wear of parts. Therefore, an air filter must be installed. During the process of high-speed airflow passing through the air filter, the airflow impacts the filter material and the pipe orifice, resulting in microscopic vibrations and thus generating obvious noise. If this noise is not controlled, it will accompany the entire process of vehicle operation. In the prior art, generally, a muffler is added at the inlet and outlet ends of the air filter to alleviate the problem.

[0003] When the gas is transported and filtered, the rapid gas will generate vibrations, resulting in relatively large noise. Therefore, silencing equipment is required. However, the existing silencing equipment has certain drawbacks. The existing silencing equipment does not have the effect of multi-layer silencing, resulting in noise pollution. Therefore, there is an urgent need for a silencing device for an air filter to solve the above problems. Content of the Utility Model

[0004] To solve the above problems, the utility model provides a silencing device for an air filter, and the utility model is realized through the following technical solutions.

[0005] A silencing device for an air filter includes an air inlet cover, a dust removal cylinder, a filter element seat, and an exhaust cover. At one end inside the dust removal cylinder, a conical flow guide cover is provided, and the conical flow guide cover is fixedly connected to the conical flow guide cover through a connecting rod provided. At the other end inside the dust removal cylinder, a sponge sound absorption cylinder is embedded and connected. On one side of the filter element seat, an air filter element is fixedly connected. On the other side of the filter element seat, a gas collecting pipe is penetrated and connected. The end of the gas collecting pipe extending into the air filter element is provided with gas collecting holes. The other end of the gas collecting pipe is fixedly connected to a dispersion box. A plurality of dispersion pipes are penetrated and connected to the outer surface of the dispersion box. One end of the dispersion pipe is fixedly connected to a silencing component. At one end inside the exhaust cover, a polyester fiber cylinder is embedded and connected. Exhaust holes are provided on the outer surface of the other end of the exhaust cover.

[0006] Furthermore, the air inlet cover is fixedly connected to one end of the dust removal cylinder, the dust removal cylinder is fixedly connected to one side of the filter element seat, the exhaust cover is fixedly connected to the other side of the filter element seat, and the air inlet cover, the dust removal cylinder, the filter element seat, and the exhaust cover are all in threaded fit.

[0007] Furthermore, both the dispersion box and the silencing component are arranged inside the exhaust cover.

[0008] Furthermore, the sound-absorbing component further includes an air outlet pipe, a foam plastic ring, and an outer positioning cover. A plurality of the foam plastic rings are fixedly sleeved on one end of the air outlet pipe, the outer positioning cover is sleeved on the outer surface of the plurality of foam plastic rings, and the air outlet pipe is in threaded fit with the outer positioning cover, and the air outlet pipe is connected to the outer positioning cover in a penetrating manner.

[0009] Furthermore, the inner wall of the sponge sound-absorbing cylinder is wavy.

[0010] The beneficial effects of the present utility model are as follows: during the operation of the device, first, the gas enters the inside of the dust removal cylinder through the air inlet cover. The conical flow guide cover fixed inside the dust removal cylinder can make the gas be transported along the periphery of the dust removal cylinder, so that the sponge sound-absorbing cylinder fixed inside the dust removal cylinder can block and silence the passing gas. Among them, the gas inside the dust removal cylinder can filter the gas through the provided air filter element. The filtered gas is input into the dispersion box through the gas collecting pipe, and the dispersion box then respectively inputs the filtered gas into the connected sound-absorbing components through a plurality of dispersion pipes. The foam plastic rings provided in the sound-absorbing components can perform secondary silencing on the gas. Finally, the gas is discharged from the inside of the sound-absorbing component into the exhaust cover. The provided polyester fiber cylinder can perform a third filtration on the gas, and the filtered gas is output through the exhaust holes. The structure is reasonable, easy to disassemble and assemble, and has a better sound-absorbing effect at the same time. Description of the Drawings

[0011] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for use in the following description of the specific implementation manners will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0012] Figure 1 : Structural schematic diagram of the sound-absorbing device of an air filter of the present utility model;

[0013] Figure 2 : Internal schematic diagram of the dust removal cylinder of the present utility model;

[0014] Figure 3 : Internal schematic diagram of the exhaust cover of the present utility model;

[0015] Figure 4 : Connection schematic diagram of the filter element seat, air filter element, and dispersion box of the present utility model;

[0016] Figure 5 : Connection schematic diagram of the gas collecting pipe and dispersion pipes of the present utility model;

[0017] Figure 6 : Connection schematic diagram of the air outlet pipe, foam plastic ring, and outer positioning cover of the present utility model.

[0018] The reference numerals are as follows:

[0019] 1. Air intake hood;

[0020] 2. Dust removal cylinder; 21. Conical deflector; 211. Connecting rod; 22. Sponge sound absorption cylinder;

[0021] 3. Filter element seat;

[0022] 4. Exhaust hood; 41. Exhaust hole; 42. Polyester fiber cylinder;

[0023] 5. Air filter element; 51. Gas collecting pipe; 511. Gas collecting hole;

[0024] 6. Dispersion box; 61. Dispersion pipe;

[0025] 7. Sound absorption component; 71. Air outlet pipe; 72. Foamed plastic ring; 73. Outer positioning cover. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0027] As Figures 1-5 shown, the present utility model has the following specific embodiments.

[0028] Embodiment:

[0029] A sound absorption device for an air filter includes an air intake hood 1, a dust removal cylinder 2, a filter element seat 3 and an exhaust hood 4. One end inside the dust removal cylinder 2 is provided with a conical deflector 21, and the conical deflector 21 is fixedly connected to the conical deflector 21 through a provided connecting rod 211. The other end inside the dust removal cylinder 2 is embedded with a sponge sound absorption cylinder 22. One side of the filter element seat 3 is fixedly connected with an air filter element 5, and the other side of the filter element seat 3 is penetrated and connected with a gas collecting pipe 51. The end of the gas collecting pipe 51 extending into the air filter element 5 is provided with a gas collecting hole 511. The other end of the gas collecting pipe 51 is fixedly connected with a dispersion box 6. The outer surface of the dispersion box 6 is penetrated and connected with a plurality of dispersion pipes 61. One end of the dispersion pipe 61 is fixedly connected with a sound absorption component 7. One end inside the exhaust hood 4 is embedded with a polyester fiber cylinder 42, and the outer surface of the other end of the exhaust hood 4 is provided with an exhaust hole 41.

[0030] By adopting the above technical solution, when using the device, first, gas enters the interior of the dust removal cylinder 2 through the air inlet hood 1. The conical flow guide hood 21 fixed inside the dust removal cylinder 2 can make the gas transported along the periphery of the dust removal cylinder 2, so that the sponge sound absorption cylinder 22 fixed inside the dust removal cylinder 2 can block and silence the passing gas. Among them, the gas inside the dust removal cylinder 2 can filter the gas through the provided air filter element 5, and the filtered gas is input into the dispersion box 6 through the gas collecting pipe 51. The dispersion box 6 then inputs the filtered gas into the connected sound silencing component 7 through a plurality of dispersion pipes 61 respectively. The foam plastic ring 72 provided in the sound silencing component 7 can perform secondary silencing on the gas. Finally, the gas is discharged into the exhaust hood 4 from inside the sound silencing component 7. The provided polyester fiber cylinder 42 can perform the third filtration on the gas, and the filtered gas is output through the exhaust holes 41. The structure is reasonable, easy to disassemble and assemble, and has a better sound silencing effect at the same time.

[0031] Specifically, the air inlet hood 1 is fixedly connected to one end of the dust removal cylinder 2, the dust removal cylinder 2 is fixedly connected to one side of the filter element seat 3, the exhaust hood 4 is fixedly connected to the other side of the filter element seat 3, and the air inlet hood 1, the dust removal cylinder 2, the filter element seat 3 and the exhaust hood 4 are all in threaded fit.

[0032] By adopting the above technical solution, the air inlet hood 1, the dust removal cylinder 2, the filter element seat 3 and the exhaust hood 4 are all in threaded fit, so as to facilitate disassembly and assembly.

[0033] Specifically, both the dispersion box 6 and the sound silencing component 7 are arranged inside the exhaust hood 4.

[0034] By adopting the above technical solution, the provided dispersion box 6 can disperse and discharge the filtered gas.

[0035] Specifically, the sound silencing component 7 further includes an air outlet pipe 71, a foam plastic ring 72 and an outer positioning cover 73. The foam plastic rings 72 are a plurality of fixedly sleeved on one end of the air outlet pipe 71. The outer positioning cover 73 is sleeved on the outer surface of the plurality of foam plastic rings 72, and the air outlet pipe 71 and the outer positioning cover 73 are in threaded fit, and the air outlet pipe 71 and the outer positioning cover 73 are connected through penetration.

[0036] By adopting the above technical solution, when the gas is discharged through the inside of the air outlet pipe 71, the foam plastic rings 72 sleeved on the air outlet pipe 71 can block the transmission of sound through solids.

[0037] Specifically, the inner wall of the sponge sound absorption cylinder 22 is wavy.

[0038] By adopting the above technical solution, the inner wall of the sponge sound absorption cylinder 22 adopts a wavy structure, which is convenient for the formation of diffuse reflection after the sponge sound absorption cylinder 22 intakes air, so as to improve the sound silencing effect.

[0039] 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 only the specific embodiments. Obviously, according to the content of this specification, many modifications and variations can be made. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A silencer device for an air filter, comprising an air intake cover (1), a dust removal cylinder (2), a filter element seat (3) and an exhaust cover (4), characterized in that: A conical air guide cover (21) is provided at one end of the dust collecting cylinder (2), and the conical air guide cover (21) is fixedly connected to the conical air guide cover (21) by means of a connecting rod (211). A sponge sound absorbing cylinder (22) is embedded and connected to the other end of the dust collecting cylinder (2). An air filter (5) is fixedly connected to one side of the filter element seat (3), and an air collecting pipe (51) is penetrated and connected to the other side of the filter element seat (3). An air collecting hole (511) is provided at one end of the air collecting pipe (51) extending to the inside of the air filter element (5). A dispersion box (6) is fixedly connected to the other end of the air collecting pipe (51), and a plurality of dispersion pipes (61) are penetrated and connected to the outer surface of the dispersion box (6). A silencer assembly (7) is fixedly connected to one end of the dispersion pipe (61). A polyester fiber cylinder (42) is embedded and connected to one end of the exhaust hood (4), and an exhaust hole (41) is provided on the outer surface of the other end of the exhaust hood (4).

2. The silencer device of an air filter according to claim 1, characterized in that: The air intake hood (1) is fixedly connected to one end of the dust removal cylinder (2), the dust removal cylinder (2) is fixedly connected to one side of the filter element seat (3), and the exhaust hood (4) is fixedly connected to the other side of the filter element seat (3), and the air intake hood (1), the dust removal cylinder (2), the filter element seat (3) and the exhaust hood (4) are all threadedly matched.

3. The silencer device of an air filter according to claim 1, characterized in that: The dispersion box (6) and the silencer assembly (7) are both arranged inside the exhaust hood (4).

4. The silencer device of an air filter according to claim 1, characterized in that: The silencer assembly (7) further comprises an air outlet pipe (71), a foam plastic ring (72) and an outer positioning cover (73); the foam plastic ring (72) is a plurality of foam plastic rings (72) fixedly sleeved on one end of the air outlet pipe (71); the outer positioning cover (73) is sleeved on the outer surfaces of the plurality of foam plastic rings (72); the air outlet pipe (71) and the outer positioning cover (73) are threadedly matched; the air outlet pipe (71) and the outer positioning cover (73) are connected through the air outlet pipe (71).

5. The silencer device of an air filter according to claim 1, characterized in that: The inner wall of the sponge sound absorbing tube (22) is wave-shaped.

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