CN207641176U - A kind of environment-friendly type heavy duty air filter element - Google Patents

Abstract

The utility model is related to a kind of environment-friendly type heavy duty air filter elements, the filter paper and a pair of end cap for being separately positioned on plastic center pipe both ends that the filter core includes plastic center pipe, is set in outside plastic center pipe, the end cap is equipped with elastic clamping structure compatible with the end of plastic center pipe, and the plastic center pipe is detachably connected by elastic clamping structure with end cap.Compared with prior art, in the utility model, plastic center pipe is fixed with filter paper by end cap, when filter core reaches service life, it need to only remove end cap, replace filter paper, plastic center pipe is reusable, avoid the discarded pollution to environment of plastic center pipe, and resource has been saved, energy consumption is reduced, the feature of environmental protection is good.

Description

An environmentally friendly heavy-duty air filter element

technical field

The utility model belongs to the technical field of air filters and relates to an environment-friendly heavy-duty air filter element.

Background technique

At present, most of the filter elements of air filters used in commercial vehicles are composed of filter paper and plastic center tube, and the filter paper and plastic center tube are bonded together with PU glue. Among them, the main material of the plastic central tube is usually polypropylene (PP), which plays a role in supporting the skeleton in the filter element. Due to the high frequency of use and heavy load of the air filter in commercial vehicles, the air filter element has become one of the components that often need maintenance in commercial vehicles. Once the filter element reaches the end of its life, it will be discarded. In addition, the filter elements used in commercial vehicles are often large in size, which makes the volume of the plastic central tube correspondingly large, and the two ends of the plastic central tube and filter paper are usually tightly wrapped by PU glue foaming, which leads to the plastic central tube It is difficult to recycle, and the plastic central tube is difficult to degrade in the environment. If it is incinerated, it will produce toxic pollutants and endanger the air.

Utility model content

The purpose of this utility model is to provide an environment-friendly heavy-duty air filter element in order to overcome the above-mentioned defects in the prior art.

The purpose of this utility model can be achieved through the following technical solutions:

An environment-friendly heavy-duty air filter element, the filter element includes a plastic central tube, filter paper sleeved outside the plastic central tube, and a pair of end caps respectively arranged at both ends of the plastic central tube, the end caps are provided with The end of the plastic central tube is fitted with an elastic clamping structure, and the plastic central tube is detachably connected to the end cap through the elastic clamping structure.

Further, the filter paper is in the shape of a cylinder and is sheathed on the outside of the plastic central tube. A cylindrical filter paper wraps the outside of the plastic central tube to filter the air.

Further, the outside of the filter paper is covered with a protective net. The protective net can protect the surface of the filter paper from being scratched and polluted.

As a preferred technical solution, the protective net is a porous paper protective net.

Further, the end cap is ring-shaped, and the elastic locking structure is arranged on the inner wall of the end cap. The end cap is sleeved on the end of the plastic central tube, and is fixedly connected with the plastic central tube through an elastic clamping structure.

Further, the elastic locking structure includes an axial limit block arranged on the inner wall of the end cover and a radial limit block arranged on the axial limit block, the radial limit block, the shaft A groove is formed between the limiting block and the end cover, and a pair of elastic clamping blocks are arranged side by side in the groove. When the end cover is put on the end of the plastic central tube, the end of the plastic central tube passes between the two elastic blocks and abuts against the axial limit block, and the two elastic blocks tightly clamp the plastic central tube in the middle .

As a preferred technical solution, the elastic clamping block, the axial limiting block and the radial limiting block are all made of polyurethane (PU). Polyurethane is elastic to facilitate fixing and sealing of the end caps after they are installed on the end of the plastic center tube.

Further, the distance between the radial limit block and the end cap is greater than the thickness of the plastic central tube, and the distance between the two elastic blocks is smaller than the thickness of the plastic central tube. When the end of the plastic central tube gradually enters between the two elastic blocks, since both the elastic block and the radial limit block are elastic, under the extrusion of the plastic central tube, the elastic block and the radial limit block Deformation causes the distance between the two elastic blocks to increase; when the plastic central tube enters between the two elastic blocks and abuts against the axial limit block, the elastic recovery of the elastic block and the radial limit block Under the action of force, the two elastic blocks tightly clamp the plastic center tube in the middle to ensure the firmness and sealing of the installation.

Further, the elastic clamping block includes a clamping part and a guide part arranged at the bottom of the clamping part. The inner surface of the guide part is inclined, so that the end of the plastic central tube can slide gradually along the inner surface of the guide part between the two elastic blocks, which improves the convenience of installation and the accuracy of positioning.

Further, the outer wall of the end cap is provided with a filter paper limit block suitable for the filter paper. The end caps at both ends of the plastic central tube axially limit the filter paper through the filter paper limit block.

Further, a sealing plate is provided on the end cap at one end of the plastic central tube, and the sealing plate closes one end of the plastic central tube. Among the end caps at both ends of the plastic central tube, one end cap is an open ring, and the other end cap is closed by a sealing plate, so that one end of the plastic central tube is open and the other end is closed.

When the utility model is used in practice, the filter element is installed in the matching air filter housing, and the air to be filtered passes through the filter paper from the outside of the filter paper in the air filter housing, and most of the particles in the air are absorbed by the filter paper. Blocked and attached to the filter paper, the filtered clean air passes through the filter paper and enters the plastic central tube, and then passes through the central opening of the end cap at one end of the plastic central tube and is discharged.

When the particles in the filter paper accumulate to a certain amount, resulting in excessive air intake resistance, the filter paper has reached the end of its service life. At this time, the air filter housing can be opened, the filter element can be taken out, and the end cap at one end of the plastic central tube can be removed to replace the discarded filter paper, while the plastic central tube can still be reused.

The utility model utilizes the remodelability and elastic body characteristics of the elastic clamping structure on the end cover, and the end cover and the elastic clamping structure can be designed as one, and can be molded by one-time injection of glue through a PU injection mold.

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

1) The plastic central tube and the filter paper are fixed through the end cap. When the filter element reaches the end of its service life, it is only necessary to remove the end cap and replace the filter paper. The plastic central tube can be reused, which avoids the environmental pollution caused by the disposal of the plastic central tube. And save resources, reduce energy consumption, good environmental protection;

2) The detachable connection between the end cover and the plastic central tube is realized through the cooperation of the elastic clamping structure and the plastic central tube, and the installation is fast and accurate, and easy to operate;

3) The structure is simple, easy to process and manufacture, and can be used for air filters with high frequency of use and heavy load.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is the sectional structure schematic diagram of end cap in the utility model;

Fig. 3 is a schematic diagram of the cooperation structure of the plastic central tube and the elastic clamping structure in the utility model;

Instructions for marks in the figure:

1—plastic central tube, 2—filter paper, 3—end cover, 4—guard net, 5—axial limit block, 6—radial limit block, 7—groove, 8—elastic block, 801—clip Tight part, 802—guiding part, 9—filter paper limit block, 10—sealing plate.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the utility model, and the detailed implementation and specific operation process are given, but the protection scope of the utility model is not limited to the following examples.

Example:

An environment-friendly heavy-duty air filter element as shown in Figure 1, the filter element includes a plastic central tube 1, a filter paper 2 sleeved outside the plastic central tube 1, and a pair of end caps respectively arranged at both ends of the plastic central tube 1 3. The end cover 3 is provided with an elastic clamping structure matching the end of the plastic central tube 1, and the plastic central tube 1 is detachably connected to the end cover 3 through the elastic clamping structure.

Wherein, the filter paper 2 is in a cylindrical shape and is sheathed on the outside of the plastic central tube 1 . The outside of the filter paper 2 is covered with a protective net 4 . The end cover 3 is ring-shaped, and the elastic locking structure is arranged on the inner wall of the end cover 3 .

As shown in Figure 2 and Figure 3, the elastic clamping structure includes an axial limit block 5 arranged on the inner wall of the end cover 3 and a radial limit block 6 arranged on the axial limit block 5, the radial limit block A groove 7 is formed between the position block 6 , the axial limit block 5 and the end cover 3 , and a pair of elastic clamping blocks 8 are arranged side by side in the groove 7 . The distance between the radial limit block 6 and the end cap 3 is greater than the thickness of the plastic central tube 1 , and the distance between the two elastic blocks 8 is smaller than the thickness of the plastic central tube 1 . The elastic block 8 includes a clamping portion 801 and a guide portion 802 disposed at the bottom of the clamping portion 801 . A filter paper limiting block 9 matching the filter paper 2 is provided on the outer wall of the end cover 3 . The end cap 3 at one end of the plastic central tube 1 is provided with a sealing plate 10 which seals one end of the plastic central tube 1 .

In actual application, the filter element is installed in the matching air filter housing, and the air to be filtered passes through the filter paper 2 from the outside of the filter paper 2 in the air filter housing, and most of the particles in the air are absorbed by the filter paper 2. Blocked and attached to the filter paper 2, the filtered clean air passes through the filter paper 2 and enters the plastic central tube 1, and then passes through the central opening of the end cap 3 at one end of the plastic central tube 1 and then is discharged.

When the particles in the filter paper 2 accumulate to a certain amount, resulting in excessive air intake resistance, the filter paper 2 has reached the end of its service life. At this time, the air filter housing can be opened, the filter element is taken out, and the end cap 3 at one end of the plastic central tube 1 can be removed, so that the discarded filter paper 2 can be replaced, and the plastic central tube 1 can still be reused.

The above description of the embodiments is for those of ordinary skill in the technical field to understand and use the utility model. It is obvious that those skilled in the art can easily make various modifications to these embodiments, and apply the general principles described here to other embodiments without creative efforts. Therefore, the utility model is not limited to the above-mentioned embodiments, and improvements and modifications made by those skilled in the art according to the disclosure of the utility model without departing from the category of the utility model should be within the protection scope of the utility model.

Claims (9)

1. An environment-friendly heavy-duty air filter element, characterized in that the filter element comprises a plastic center tube (1), a filter paper (2) sleeved outside the plastic center tube (1) and a pair of plastic center tubes respectively The end caps (3) at both ends of the tube (1), the end caps (3) are provided with an elastic clamping structure matching the end of the plastic central tube (1), and the plastic central tube (1) ) is detachably connected to the end cover (3) through an elastic clamping structure. 2. An environment-friendly heavy-duty air filter element according to claim 1, characterized in that, the filter paper (2) is cylindrical and sleeved on the outside of the plastic central tube (1). 3. An environment-friendly heavy-duty air filter element according to claim 2, characterized in that a protective net (4) is sheathed on the outside of the filter paper (2). 4. An environment-friendly heavy-duty air filter element according to claim 1, characterized in that, the end cover (3) is ring-shaped, and the elastic clamping structure is arranged on the end cover (3) on the inner wall. 5. An environment-friendly heavy-duty air filter element according to claim 4, characterized in that, the elastic clamping structure includes an axial limit block (5) arranged on the inner wall of the end cover (3) ) and the radial limit block (6) arranged on the axial limit block (5), the radial limit block (6), the axial limit block (5) and the end cover (3) A groove (7) is formed between them, and a pair of elastic clamping blocks (8) are arranged side by side in the groove (7). 6. An environment-friendly heavy-duty air filter element according to claim 5, characterized in that the distance between the radial limit block (6) and the end cover (3) is greater than the distance between the plastic central tube ( 1), the distance between the two elastic blocks (8) is less than the thickness of the plastic central tube (1). 7. An environment-friendly heavy-duty air filter element according to claim 5, characterized in that, the elastic block (8) includes a clamping part (801) and is arranged at the bottom of the clamping part (801). end guide (802). 8. An environment-friendly heavy-duty air filter element according to claim 4, characterized in that, the outer wall of the end cover (3) is provided with a filter paper limit block compatible with the filter paper (2) (9). 9. An environment-friendly heavy-duty air filter element according to claim 4, characterized in that a sealing plate (10) is provided on the end cap (3) at one end of the plastic central tube (1), and the The sealing plate (10) closes one end of the plastic central tube (1).