CN219081733U

CN219081733U - Cylindrical air filter element

Info

Publication number: CN219081733U
Application number: CN202320108515.8U
Authority: CN
Inventors: 王唯真
Original assignee: Mann and Hummel Filter Shanghai Co Ltd
Current assignee: Mann and Hummel Filter Shanghai Co Ltd
Priority date: 2023-02-03
Filing date: 2023-02-03
Publication date: 2023-05-26
Anticipated expiration: 2033-02-03

Abstract

The utility model relates to a cylindrical air filter element, which comprises a plastic central tube (1), an annular paper core (2) and a sealing ring (3); the plastic central tube (1) is provided with openings at two ends, the annular paper core (2) is sleeved on the plastic central tube (1), the sealing ring (3) is arranged at two ends of the plastic central tube (1), and the sealing ring (3) is connected with the plastic central tube (1) and the annular paper core (2) through foaming. Compared with the prior art, the utility model has the advantages of stable structure and the like.

Description

Cylindrical air filter element

Technical Field

The utility model relates to the technical field of air filters, in particular to a cylindrical air filter element.

Background

Conventionally, an internal combustion engine vehicle is equipped with an air cleaner to filter outside air and supply it to the engine, and in recent years, as the demand for the air cleaner increases, many non-flat panel filter cartridges are gradually derived. In an internal combustion engine vehicle such as a passenger car, a large number of cylindrical air cleaner cartridges have been employed, and air (outside air) can be filtered as it flows toward the inside (inside of a cylinder) through the outer peripheral surface (outside of the cylinder) of the cartridge, which has an advantage in that, due to the shape of the cylinder, air can pass through the entire outer peripheral surface of the cartridge, and thus, it can more rapidly filter and supply a large amount of air. However, the central tube of the existing cylindrical air filter element is not firmly connected with the sealing ring, and the sealing ring is easy to fall off.

Disclosure of Invention

The utility model aims to provide a cylindrical air filter element, which optimizes the connection between a sealing ring and a central tube.

The aim of the utility model can be achieved by the following technical scheme: a cylindrical air filter element comprises a plastic central tube, an annular paper core and a sealing ring; the plastic central tube is provided with openings at two ends, the annular paper core is sleeved on the plastic central tube, the sealing rings are arranged at two ends of the plastic central tube, and the sealing rings are connected with the plastic central tube and the annular paper core through foaming.

Preferably, the plastic central tube has a larger opening at one end and a smaller opening at the other end, the smaller opening end is provided with a grid structure, and the sealing ring is connected with the grid structure through foaming.

Further preferably, the grid-like structure comprises a plurality of radial ribs looped around the end of the plastic central tube and annular ribs disposed on the radial ribs.

Still further preferably, one end of the radial reinforcing rib is connected with the end of the plastic central tube, the other end extends towards the central axis of the plastic central tube, and the annular ribs are arranged on the radial reinforcing rib at equal intervals and coaxial with the plastic central tube.

Further preferably, the sealing ring at the smaller end of the opening of the plastic central tube is provided with a closing-in structure, and can be in interference connection with the opponent.

Further preferably, the sealing ring covers the grid structure.

Preferably, a plurality of grooves for enhancing the connection strength with the sealing ring are arranged at two ends of the plastic central tube.

Preferably, the side wall of the plastic central tube is surrounded by an axial rib and a circumferential rib to form a hollowed-out structure.

Preferably, the outer diameters of the sealing rings are the same and are larger than the outer diameter of the annular paper core.

Preferably, the sealing ring is a PU foaming adhesive sealing ring.

Preferably, the smaller open end of filter core, PU glues the shape and is the circular structure of outside wide inside narrow, and when the hand piece got into, PU glues the compression gradually, forms interference fit, reaches sealed effect.

In the prior art, the central tube is not firmly connected with the PU adhesive, the PU adhesive is easy to fall off, and bubbles are easy to generate during foaming.

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

1. the sealing ring is connected with the plastic central tube and the annular paper core through foaming, so that the connection between the sealing ring and the central tube is optimized, and the structure is stable;

2. according to the sealing ring, through the closing-in structure design of the sealing ring, the sealing ring can be in interference connection with an opponent piece, so that a sealing effect is achieved;

3. the grid structure of the smaller opening end of the central tube can enable the sealing ring to be more tightly connected with the central tube in the foaming process;

4. the radial reinforcing ribs of the grid-shaped structure at the smaller opening end of the central tube play a role in radial positioning and are radial positioning elements.

Drawings

FIG. 1 is a schematic view of the structure of a filter cartridge of the present utility model;

FIG. 2 is a schematic view of a partial structure of a filter cartridge of the present utility model;

FIG. 3 is a schematic view of a closing-in structure according to the present utility model;

FIG. 4 is a side view of the plastic center tube of the present utility model;

FIG. 5 is a cross-sectional view of a plastic center tube of the present utility model;

in the figure: 1-plastic central tube, 11-grid structure, 2-annular paper core and 3-sealing ring.

Detailed Description

The utility model will now be described in detail with reference to the drawings and specific examples. The following examples are given by way of illustration of detailed embodiments and specific procedures based on the technical scheme of the present utility model, but the scope of the present utility model is not limited to the following examples.

Example 1

A cylindrical air filter element, as shown in figure 1, comprises a plastic central tube 1, an annular paper core 2 and a sealing ring 3.

Wherein, plastic center tube 1 both ends opening, annular refill 2 cover are established on plastic center tube 1, and sealing washer 3 sets up at plastic center tube 1 both ends, and sealing washer 3 is connected with plastic center tube 1 and annular refill 2 through the foaming.

When the filter is in operation, dirty air is introduced circumferentially and filtered by the filter element, and clean air is discharged through the two air outlets (openings at two ends) and conveyed to a specified position.

Example 2

A cylindrical air filter element with two open ends mainly comprises a plastic central tube 1, a sealing ring 3 and a paper element. The paper core and the plastic central tube 1 are fixed by positioning; the sealing ring 3 is connected with the paper core and the plastic central tube 1 through foaming.

As shown in fig. 2, the small opening at one end of the plastic central tube 1 uses a grid structure 11, so that the sealing ring 3 is tightly connected with the plastic central tube 1 when foaming.

As shown in fig. 2-3, the smaller opening of the filter element is in interference connection with the opponent piece through the closing-in shape of the sealing ring 3, so as to achieve the sealing effect.

The working principle of the filter element of the embodiment is as follows:

and bonding the head end and the tail end of the paper core to form the annular paper core 2. The annular paper core 2 is fixed with the plastic central tube 1, and is connected with the plastic central tube 1 through foaming of the sealing ring 3. When the filter is in operation, air enters from the outer side of the filter element and passes through the paper core, so that the filtering effect is achieved. Clean air is discharged from the openings at the two ends of the filter element and passes through the hand piece.

Example 3

As shown in fig. 4, the mesh-like structure 11 of the plastic center tube 1 includes a plurality of radial reinforcing ribs looped on the end of the plastic center tube 1 and annular ribs provided on the radial reinforcing ribs. One end of the radial reinforcing rib is connected with the end part of the plastic central tube 1, the other end extends towards the central axis of the plastic central tube 1, and the annular ribs are arranged on the radial reinforcing rib at equal intervals and coaxial with the plastic central tube 1. As shown in fig. 5, the side wall of the plastic central tube 1 is surrounded by axial ribs and circumferential ribs to form a hollow structure. The remainder was the same as in example 2.

The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present utility model is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.

Claims

1. The cylindrical air filter element is characterized by comprising a plastic central tube (1), an annular paper core (2) and a sealing ring (3); the plastic central tube (1) is provided with openings at two ends, the annular paper core (2) is sleeved on the plastic central tube (1), the sealing ring (3) is arranged at two ends of the plastic central tube (1), and the sealing ring (3) is connected with the plastic central tube (1) and the annular paper core (2) through foaming.

2. The cylindrical air filter element according to claim 1, wherein the plastic central tube (1) has a larger opening at one end and a smaller opening at the other end, the smaller opening end is provided with a grid structure (11), and the sealing ring (3) is connected with the grid structure (11) by foaming.

3. A cylindrical air cleaner cartridge according to claim 2, wherein the lattice structure (11) comprises a plurality of radial ribs looped around the end of the plastic central tube (1) and annular ribs provided on the radial ribs.

4. A cylindrical air cleaner cartridge according to claim 3, wherein one end of the radial reinforcing rib is connected to the end of the plastic central tube (1), the other end extends toward the central axis of the plastic central tube (1), and the annular ribs are arranged on the radial reinforcing rib at equal intervals and coaxial with the plastic central tube (1).

5. The cylindrical air filter element according to claim 2, wherein the sealing ring (3) at the smaller end of the opening of the plastic central tube (1) has a closing-in structure, and can be in interference connection with the hand piece.

6. A cylindrical air cleaner cartridge according to claim 2, wherein the sealing ring (3) encloses the lattice structure (11).

7. The cylindrical air cleaner cartridge according to claim 1, wherein a plurality of grooves for reinforcing the connection strength with the seal ring (3) are provided at both ends of the plastic center tube (1).

8. The cylindrical air filter element according to claim 1, wherein the side wall of the plastic central tube (1) is hollow by an axial rib and a circumferential rib.

9. The cylindrical air cleaner cartridge according to claim 1, wherein the sealing rings (3) have the same outer diameter and are larger than the outer diameter of the annular paper core (2).

10. The cylindrical air filter cartridge according to any one of claims 1 to 9, wherein the sealing ring (3) is a PU foam sealing ring.