Air filter with silencing structure

Abstract

The utility model discloses an air filter with a silencing structure, which relates to the technical field of air filters and comprises a barrel, an air inlet pipe is inserted at the top end of the barrel, an exhaust pipe is inserted at the bottom end of the barrel, and the top and the bottom of the barrel are connected with connecting shells. After the air filter is used for a certain period, dust accumulated in the air filter can be cleaned out through disassembly, use of the air filter is prevented from being affected, filter elements arranged in the two connecting shells can preliminarily filter dust particles entering the cylinder body from air, noise generated when the dust collides with the filter elements can be greatly reduced, and the air filter has good practicability. And after the cylinder body is separated from the connecting shell, the filter element in the connecting shell can be conveniently detached and replaced, so that the effect of saving cost is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air filters, in particular to an air filter with a silencer structure. Background Art

[0002] According to application number "CN210317545U," this technical solution utilizes a sound-absorbing principle that combines micro-perforations with sound-absorbing materials, and features an innovative design for the airflow path. Specifically, a closed cylinder forms the gas flow channel. Inside the cylinder, a partition divides the space into three sections from top to bottom. Based on the position of the nozzle and the surface holes, a specific gas flow path is constructed, allowing the airflow to diffuse repeatedly before entering the exhaust pipe, mitigating the impact of airflow vibrations. Furthermore, polyester fiber sound-absorbing cotton strips are embedded in the exhaust pipe to further mitigate the microscopic vibrations of the tangential airflow. The airflow then flows downward through a porous cover and air stone, where it is repeatedly refracted and buffered within the porous structure, further enhancing the sound-absorbing effect. Applied to the inlet and outlet pipes of air filters, this design effectively mitigates noise and offers excellent noise reduction. Furthermore, compared to conventional mufflers, this design boasts a relatively simple structure, eliminating the need for a bulky box-like structure and occupying less space.

[0003] In the process of implementing this solution, the inventor found that the following problems in the prior art have not been well solved: since the dust will first enter the cylinder before entering the air filter, a lot of dust will accumulate inside it, and the cylinder is in a closed state, it is very easy to cause blockage due to excessive dust accumulation, resulting in counterproductive problems; and when there is a lot of dust, it will flow with the gas inside the cylinder and block the through holes, resulting in the inability to reduce noise and muffle the sound; because the device is in a closed state, once it is blocked by a lot of dust, it cannot be used any longer and needs to be replaced, resulting in increased use costs. Utility Model Content

[0004] The main purpose of the utility model is to provide an air filter with a silencer structure, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] An air filter with a silencer structure includes a cylinder, an air intake pipe is inserted into the top end of the cylinder, an exhaust pipe is inserted into the bottom end of the cylinder, the top and bottom of the cylinder are connected to a connecting shell, the inner wall of the top end and the inner wall of the bottom end of the cylinder are both provided with an internal thread 1, the connecting shell includes a sealing plate, the sealing plate is fixed with an inner cylinder at one end close to the cylinder, the outer wall of the inner cylinder is provided with an external thread 1, the inner wall of the inner cylinder away from the convex plate is provided with an internal thread 2, a filter element is embedded in the interior of the inner cylinder, a sealing ring is embedded in the inner cylinder at the position of the internal thread 2, the outer wall of the sealing ring is provided with an external thread 2, a through hole 1 is drilled at the matching position of the sealing plate and one end of the filter element, a partition plate is fixed to the middle position of the cylinder between the connecting shells, and four through holes 2 are drilled equidistantly on the partition plate.

[0007] Preferably, the inner cylinder is threadably connected to the inner thread on the cylinder body via an outer thread.

[0008] Preferably, the sealing ring is threadably connected to the second internal thread on the inner cylinder via the second external thread, and the inner diameter of the sealing ring is smaller than the outer diameter of the filter element.

[0009] Preferably, the air inlet pipe and the exhaust pipe are respectively in communication with through hole 1, and one end of the air inlet pipe and the exhaust pipe inserted into the cylinder is respectively in communication with one of the through holes 2.

[0010] Preferably, a plurality of convex plates are provided on the side of the sealing ring away from the filter core and the outer peripheral wall of the sealing plate.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This device is assembled from a cylinder, a connecting shell, an air inlet pipe, an exhaust pipe and a partition plate. After a certain period of use, it can be disassembled to clean out the dust accumulated inside to avoid affecting the use of the air filter.

[0013] 2. The filter elements installed in the two connecting shells can preliminarily filter the dust particles in the air entering the cylinder. The noise generated when the dust hits the filter element will also be greatly reduced, which has good practicality.

[0014] After the cylinder body and the connecting shell are separated, the filter element in the connecting shell can be easily disassembled and replaced to achieve the effect of cost saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of an air filter with a silencer structure according to the present invention;

[0016] Figure 2 This is a schematic structural diagram of a cross-section of the cylinder of an air filter with a silencer structure according to the present invention;

[0017] Figure 3 This is a schematic structural diagram of the air filter cylinder with a silencer structure of the utility model after being cut away and separated from the connecting shell;

[0018] Figure 4 This is a schematic structural diagram of the utility model after the connecting shell of the air filter with a silencer structure is disassembled.

[0019] In the figure: 1. Cylinder; 11. Internal thread 1; 2. Connecting shell; 21. Sealing plate; 22. Inner cylinder; 221. External thread 1; 222. Internal thread 2; 23. Filter element; 24. Sealing ring; 241. External thread 2; 25. Through hole 1; 26. Protruding plate; 3. Inlet pipe; 4. Exhaust pipe; 5. Partition plate; 51. Through hole 2. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1-4 As shown, the air filter with a silencer structure includes a cylinder 1, an air intake pipe 3 is inserted at the top end of the cylinder 1, an exhaust pipe 4 is inserted at the bottom end of the cylinder 1, the top and bottom of the cylinder 1 are connected to a connecting shell 2, the inner wall of the top end and the inner wall of the bottom end of the cylinder 1 are both provided with an internal thread 11, the connecting shell 2 includes a sealing plate 21, an inner cylinder 22 is fixed at one end of the sealing plate 21 close to the cylinder 1, an outer wall of the inner cylinder 22 is provided with an external thread 1 221, an inner wall of the inner cylinder 22 away from the end of the convex plate 26 is provided with an internal thread 222, a filter element 23 is embedded in the interior of the inner cylinder 22, a sealing ring 24 is embedded in the inner cylinder 22 at the position of the internal thread 222, and an external thread 241 is provided on the outer wall of the sealing ring 24, a through hole 25 is drilled at the matching position of the sealing plate 21 and one end of the filter element 23, a partition plate 5 is fixed at the middle position of the cylinder 1 between the connecting shells 2, and four through holes 2 51 are drilled at equal intervals on the partition plate 5.

[0022] Specifically, the inner cylinder 22 is threadedly connected to the internal thread 11 on the cylinder body 1 through an external thread 221, which is convenient for disassembly and assembly.

[0023] Specifically, the sealing ring 24 is threadedly connected to the second internal thread 222 on the inner tube 22 via the second external thread 241 . The inner diameter of the sealing ring 24 is smaller than the outer diameter of the filter element 23 , which facilitates limiting the position of the filter element 23 in the inner tube 22 .

[0024] Specifically, the air inlet pipe 3 and the exhaust pipe 4 are respectively communicated with the first through hole 25 , and one end of the air inlet pipe 3 and the exhaust pipe 4 inserted into the cylinder 1 are respectively communicated with one of the second through holes 51 .

[0025] Specifically, a plurality of convex plates 26 are provided on the side of the sealing ring 24 away from the filter element 23 and the outer peripheral wall of the sealing plate 21 to facilitate the rotation of the sealing plate 21 and the sealing ring 24.

[0026] Working principle: Gas enters from the air inlet pipe 3 into the space between the bottom of the cylinder 1 and the bottom of the partition plate 5, and enters into the space between the top of the cylinder 1 and the top of the partition plate 5 through the other two second through-holes 51, and enters into the exhaust pipe 4 at the upper position. When dust enters the top and bottom of the cylinder 1, it can be preliminarily filtered and noise-reduced by the filter element 23 in the inner cylinder 22. After the air inlet pipe 3 and the end of the exhaust pipe 4 away from the cylinder 1 and the connecting shell 2 are disassembled from the fixing parts, they are directly pulled out from the first through-hole 25 and the second through-hole 51. At this time, the sealing plate 21 separates the inner cylinder 22 from the cylinder 1 by rotation. At this time, the dust accumulated in the cylinder 1 can be poured out, and the sealing ring 24 rotates and separates from the inner cylinder 22, and the filter element 23 can be taken out from the inner cylinder 22 for replacement.

[0027] As for the structure inside the exhaust pipe 4, it has been disclosed in the comparative documents. Rubber sealing rings are bonded to the inside of the through hole 2 51 and the through hole 1 25 into which the intake pipe 3 and the exhaust pipe 4 are inserted in this application. The inner diameter of the sealing ring matches the outer diameter of the intake pipe 3 and the exhaust pipe 4 to avoid gas leakage. This technical point is a necessary component required for gas circulation and is also a basic technical point. It will not be elaborated in this application.

[0028] The circuits, electronic components and control modules involved are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by this utility model does not involve improvements to software and methods.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An air filter with a silencer structure, comprising a cylinder (1), characterized in that: An air inlet pipe (3) is inserted into the top end of the cylinder (1), and an exhaust pipe (4) is inserted into the bottom end of the cylinder (1). The top and bottom of the cylinder (1) are both connected to a connecting shell (2). The inner wall of the top end and the inner wall of the bottom end of the cylinder (1) are both provided with an internal thread (11). The connecting shell (2) includes a sealing plate (21). An inner cylinder (22) is fixed to one end of the sealing plate (21) close to the cylinder (1). An external thread (221) is provided on the outer wall of the inner cylinder (22). The inner wall of the inner cylinder (22) away from the convex plate (26) is provided with an external thread (221). A second internal thread (222) is provided, a filter core (23) is embedded in the interior of the inner cylinder (22), a sealing ring (24) is embedded in the inner cylinder (22) at the position of the second internal thread (222), and the outer wall of the sealing ring (24) is provided with a second external thread (241), a through hole (25) is drilled at the matching position of the sealing plate (21) and one end of the filter core (23), a partition plate (5) is fixed at the middle position of the cylinder (1) between the connecting shells (2), and four second through holes (51) are drilled on the partition plate (5) at equal intervals.

2. The air filter with a noise reduction structure according to claim 1, characterized in that: The inner cylinder (22) is threadably connected to the inner thread (11) on the cylinder body (1) via an outer thread (221).

3. The air filter with a noise reduction structure according to claim 1, characterized in that: The sealing ring (24) is threadedly connected to the second internal thread (222) on the inner cylinder (22) via the second external thread (241), and the inner diameter of the sealing ring (24) is smaller than the outer diameter of the filter core (23).

4. The air filter with a noise reduction structure according to claim 1, characterized in that: The air inlet pipe (3) and the exhaust pipe (4) are respectively connected to the first through hole (25), and one end of the air inlet pipe (3) and the exhaust pipe (4) inserted into the cylinder (1) is respectively connected to one of the second through holes (51).

5. The air filter with a noise reduction structure according to claim 1, characterized in that: A plurality of convex plates (26) are provided on the side of the sealing ring (24) away from the filter core (23) and on the outer peripheral wall of the sealing plate (21).

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