Sealing structure of air filter

Abstract

The utility model discloses a sealing structure of an air filter. The sealing structure comprises a filter element main body and an air outlet bent pipe, an air inlet and an air outlet are formed in the filter element main body. And the air outlet bent pipe is in threaded connection with the air outlet. According to the utility model, the sealing section formed by bending is arranged at the edge of the air outlet of the filter element main body. The sealing assembly is arranged in the sealing section, the sealing assembly can be limited through the sealing section, and the situation that the sealing performance of the sealing assembly is reduced due to relative movement caused by vibration of an automobile in the running process is avoided. Meanwhile, the sealing assembly is divided into a first sealing strip arranged on the inner side of the sealing section and a second sealing strip arranged between the gas outlet bent pipe and the outer vertical face of the sealing section, so that double-layer sealing between the filter element body and the gas outlet bent pipe is formed, and leakage or invasion of gas is further avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of filters, and particularly relates to a sealing structure of an air filter. Background Art

[0002] An air filter is an important part of a vehicle intake system, which is used to provide clean air for combustion in the engine cylinder to prevent the internal combustion engine cylinder block and its components from being abraded and damaged by the inhaled impurity dust during operation. Its performance and structure have a great impact on the overall performance of the vehicle.

[0003] The common sealing structure of traditional passenger car air filters is usually to add a sealing ring between the air filter and the connected pipeline parts and mainly seal axially. During the driving of the vehicle, especially when the vehicle travels on some uneven roads, the bumping of the vehicle itself plus the vibration effect of the engine itself will cause relative movement between the air filter and the sealing ring, resulting in a poor sealing effect and further affecting the normal operation of the engine. Summary of the Utility Model

[0004] In order to make up for the deficiencies of the prior art, the utility model provides a sealing structure of an air filter to solve the technical problem of the movement of the sealing ring caused by the vibration of the vehicle body.

[0005] To achieve the above purpose, the specific technical solution of the utility model is as follows:

[0006] A sealing structure of an air filter includes a filter element main body and an air outlet elbow. An air inlet and an air outlet are provided on the filter element main body. The air outlet elbow is threadedly connected to the air outlet.

[0007] A bent and formed sealing section is provided at the edge of the air outlet of the filter element main body. A sealing component is arranged on the sealing section. The sealing component includes a first sealing strip. An installation groove matched with the first sealing strip is formed inside the sealing section. The first sealing strip is embedded in the installation groove.

[0008] Further, the sealing component further includes a second sealing strip. An integrally formed annular edge is provided on the outer circle of the air outlet elbow. The annular edge and the outer facade of the air outlet elbow form a stepped groove. The second sealing strip is arranged at the corner of the stepped groove and abuts against the outer facade of the sealing section.

[0009] Further, the first sealing strip adopts a 3mm sealing strip.

[0010] Further, the second sealing strip adopts a 2mm sealing strip.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. In the present utility model, a bent and formed sealing section is provided at the edge of the air outlet of the filter element main body. The sealing assembly is arranged inside the sealing section, and the sealing section can limit the sealing assembly, avoiding the relative movement of the sealing assembly caused by the vibration of the vehicle during driving, thereby reducing the sealing performance.

[0013] 2. In the present utility model, the sealing assembly is divided into a first sealing strip arranged inside the sealing section and a second sealing strip arranged between the outer surface of the air outlet elbow and the sealing section, thereby forming a double-layer seal between the filter element main body and the air outlet elbow, further avoiding the leakage or intrusion of gas. Description of the Drawings

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the relative positions of the sealing section and the sealing assembly in the present utility model ( Figure 1 partial enlarged view of part A in

[0016] Reference numerals in the drawings: 1, filter element main body; 2, air outlet elbow; 3, sealing section; 4, sealing assembly; 4-1, first sealing strip; 4-2, second sealing strip. Detailed Embodiment

[0017] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end portion", "length", "outer end", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0018] The present utility model will be further described below with reference to the drawings.

[0019] As Figure 1 shown, a sealing structure of an air filter includes a filter element main body 1 and an air outlet elbow 2. Among them, an air inlet and an air outlet are provided on the filter element main body 1. The gas to be treated enters from the air inlet, and after being filtered by the filter element inside the filter element main body 1, it is discharged from the air outlet. The air outlet elbow 2 is threadedly connected to the air outlet for guiding the discharge direction of the gas filtered by the filter element main body 1. A bent and formed sealing section 3 is provided at the edge of the air outlet of the filter element main body 1.

[0020] In this embodiment, the filter element main body 1 includes an outer shell main body, filter cotton, and an inner shell main body disposed in the inner cavity of the outer shell main body. Among them, the filter cotton is disposed between the outer shell main body and the inner shell main body. The outer shell main body and the inner shell main body are respectively provided with a first air outlet and a second air outlet that are in communication with each other. The air outlet elbow 2 is threadedly connected to the second air outlet of the inner shell main body. The sealing section 3 is disposed on the first air outlet of the outer shell main body. A sealing assembly 4 is disposed on the sealing section 3 of the outer shell main body, which can ensure the sealing performance between the air outlet elbow 2 and the air outlet, and avoid the leakage of untreated gas.

[0021] The specific structure is as follows, as Figure 1 and 2 shown, the sealing assembly 4 includes a first sealing strip 4-1 and a second sealing strip 4-2. Among them, an installation groove that cooperates with the first sealing strip 4-1 is formed inside the sealing section 3. The first sealing strip 4-1 is embedded in the installation groove, which can form a preliminary seal from the inside to the outside for the gas in the filter element main body 1.

[0022] Furthermore, an integrally formed annular edge is provided on the outer circumference of the air outlet elbow 2. The annular edge and the outer surface of the air outlet elbow 2 form a stepped groove. The second sealing strip 4-2 is disposed at the corner of the stepped groove and abuts against the outer surface of the sealing section 3, which can further improve the sealing performance between the filter element main body 1 and the air outlet elbow 2.

[0023] In this embodiment, the first sealing strip 4-1 uses a 3mm sealing strip, and the second sealing strip 4-2 uses a 2mm sealing strip.

[0024] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sealing structure of an air filter, comprising a filter element main body (1) and an outlet elbow (2); an air inlet and an air outlet are formed on the filter element main body (1); the outlet elbow (2) is threadedly connected to the air outlet, and is characterized in that: A bent and formed sealing section (3) is provided at the edge of the air outlet of the filter element main body (1); a sealing assembly (4) is arranged on the sealing section (3); The sealing assembly (4) includes a first sealing strip (4-1); an installation groove matching with the first sealing strip (4-1) is formed inside the sealing section (3); the first sealing strip (4-1) is embedded in the installation groove.

2. The sealing structure of an air filter according to claim 1, characterized in that: The sealing assembly (4) further includes a second sealing strip (4-2); an integrally formed annular edge is provided on the outer ring of the air outlet elbow (2); a stepped groove is formed by the annular edge and the outer facade of the air outlet elbow (2); the second sealing strip (4-2) is arranged at the corner of the stepped groove and abuts against the outer facade of the sealing section (3).

3. The sealing structure of an air filter according to claim 1, characterized in that: The first sealing strip (4-1) is a 3mm sealing strip.

4. The sealing structure of an air filter according to claim 2, characterized in that: The second sealing strip (4-2) is a 2mm sealing strip.

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