KR20090006956A - Core for filter element and filter element mounted with the core - Google Patents

Abstract

A core for filter element is provided to need no separate sealing, to reduce number of components and to save cost by making a top cap and a bottom cap using paper material and forming ceiling on a central part. A core for filter element is admitted to an inner side of a filtration part in order to support the filtration part(10) of the filter. Core sheet(22) in which a plurality of penetration holes(21) are formed by winding and overlapping many times the core sheet. A plurality of penetration holes are arranged in order to be connected at a state that the core sheet is wound. A hollow(24) is formed inside the rolled core sheet.

Description

Core for filter element and filter element equipped with this filter element core {CORE FOR FILTER ELEMENT AND FILTER ELEMENT MOUNTED WITH THE CORE}

1 is a diagram showing the prior art of the present invention.

2 is a cross-sectional view of a filter element comprising a core of the present invention.

3 is a view showing a core of the present invention.

4 is a view showing an A-A cross section in FIG.

* Description of the symbols for the main parts of the drawings *

DESCRIPTION OF SYMBOLS 10: filter part 12: upper part cap 13: lower part cap 20: core 21: through-hole 22: core sheet 23: adhesive part 24: hollow part

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core for a filter element, and more particularly, to a core capable of easily disposing and sufficiently supporting a filtration unit against a fluid pressure such as oil or fuel, and a filter element equipped with the core.

In the filter element, as shown in FIG. 1, oil or fuel flows through the hollow cylindrical filtration unit 100 made of paper from the side in a radial direction, and the filtration is performed. The filtered oil or fuel is filtered ( 100) It flows downward or upward from the hollow part inside.

As described above, the oil or fuel is introduced from the side of the filtration unit 100 having a hollow shape, and the filtration unit 100 is provided inside the filtration unit 100 in order to prevent the shape change of the filtration unit 100 due to the inflow pressure. The core 200 for supporting the 100 is inserted.

The core 200 has a hollow cylindrical shape and a plurality of through-holes 201 are formed in the outer circumferential portion for the outflow of filtered oil or fuel and are made of a metal material.

The cap 300 of the metal material is fixed to the upper and lower surfaces of the filtration unit 100 to support the filtration unit 100, and the rubber material having the central portion thereof opened in each of the openings 301 formed in the center of the cap 300. Sealing body 400 is mounted.

The filter element configured as described above is used in a vehicle or an industrial engine, but is not a semi-permanently used product once installed, but is a consumable that needs to be replaced regularly when used for a certain period of time, which causes a problem of disposal of the used filter element.

However, in the filter element, the core is made of a metal material, and the upper cap and the lower cap mounted on the upper and lower parts of the filtration part are also made of a metal material, and thus, there is a problem in that a lot of industrial waste is mass produced because it is not easy to be completely disposed.

In order to solve this problem, a technique of making a core made of paper is known. In the case of such a paper core, the filter paper is changed in shape due to failure to support the pressure of oil or fuel flowing therein, thereby appropriately performing the filtering function of the filter element. There was a problem that could not be.

An object of the present invention is to provide a filter element core capable of sufficiently supporting the filter paper even in the pressure of oil or fuel, and easy to dispose of, and a filter element equipped with the core.

The present invention is a core that is accommodated inside the filtration unit to support the filtration unit of the filter in order to achieve the above object, it is configured to wrap a plurality of through-hole core sheet formed by overlapping several times, while the core sheet is wound The plurality of through holes are arranged to communicate with each other, characterized in that the hollow portion is formed inside the wound core sheet.

In the filter element core of the present invention, the transverse spacing between the through holes formed in the core sheet is narrower toward the portion forming the inner side when the core sheets are wound so that they can communicate with each other in the radial direction when the core sheets are wound. It is characterized by losing.

In the core for a filter element of the present invention, the core is made of paper or plastic resin.

In the filter element core of the present invention, an end portion of the core sheet is provided with an adhesive portion coated with an adhesive.

A filter element equipped with a core for a filter element of the present invention includes a filtration portion for receiving the core therein, and an upper cap and a lower cap fixed to the upper and lower portions of the filtration portion, wherein the upper cap and the lower cap are made of paper. Or a plastic resin.

In the filter element of the present invention, the upper cap and the lower cap are each formed with an opening, and the opening is characterized in that an annular band shape extending into the core.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 2 is a cross-sectional view of a filter element comprising a core of the present invention.

The filter element comprising the core of the present invention includes a filtration section 10, an upper cap 12 and a lower cap 13 supporting the filtration section 10 at the top and bottom thereof, and the interior of the filtration section 10. It consists of a core 20 to be inserted.

The filtration unit 10 is configured by folding several layers of paper so that a space portion is formed inside, and the paper surface used for the filtration unit 10 is appropriately subjected to a separate proper surface treatment depending on the use of the filter.

The upper cap 12 and the lower cap 13 are made of paper or plastic resin, and are formed in annular band-shaped openings 12a and 13a extending inwardly into the core in a substantially disc shape.

The annular band-shaped openings 12a and 13a surround the ends of the filtration section 10 and the outer circumferential wall section 22 and function as a sealing section.

3 is a view showing a core of the present invention. 4 is a view showing an A-A cross section in FIG.

The core 20 is formed by winding the core sheet 22 on which a plurality of through holes 21 of paper material are formed. Paper pulp is preferably recycled pulp in terms of resource recycling.

The transverse spacing between the through holes 21 formed in the core sheet 22 is formed to become narrower toward the portion forming the inner side while the core sheet is wound. That is, when the core sheet 22 is formed while winding from the right side to the left side, as shown in FIG. 3, since the right side, which is a starting part, forms the inside of the core 20, the horizontal gap between the through holes 21 is The narrower it goes to the right.

The reason why it is formed as shown in FIG. 4 is that in the state in which the core sheet 22 is wound, the respective transverse through holes 21 formed in the plurality of layers of the core sheet 22 must communicate with each other in the radial radial direction. This is because the distance between the through-holes 21 becomes small due to the reduction in the diameter of the core sheet 22 wound inside.

At both ends of the core sheet 22, an adhesive portion 23 coated with an adhesive or the like is formed to be attached to the core sheet 22 after the winding operation.

The core sheet 22 is wound around the core sheet 22 such that the through-holes 21 of each core sheet 22 communicate with each other and at the same time a hollow portion 24 is formed therein, and finally the adhesive portion at the end of the core sheet. The 23 is fixed to the core sheet 22.

In the core 20 of the present invention, even when made of a weak material such as paper, the core 20 is formed to be overlapped while being wound in multiple layers to sufficiently support the filtration unit 10 against lateral pressure caused by oil or fuel inflow. do.

In addition, the core 20 of the present invention is formed by simply winding the core sheet 22 to overlap, and does not require a separate mold for production, and is very simple to manufacture compared to other types of cores, and in terms of cost reduction. It is advantageous.

On the other hand, since the core is made of a material such as paper, it is advantageous in the filter element disposal, and as in the present invention, both the upper cap and the lower cap are formed of paper and made of filter paper, so that the entire filter element can be completely disposed. do.

The recessed portion is formed in the core of the present invention to have sufficient strength to support the filter paper even when made of a weak material such as paper.

In addition, since the material of the core is made of a material such as paper, it is advantageous to dispose of the spent filter element.

Furthermore, in the filter element equipped with the core of the present invention, the upper cap and the lower cap are made of paper and the sealing portion is formed at the center, thereby eliminating the need for a separate sealing as in the prior art, thereby reducing the number of parts and reducing the cost. Has the advantage of saving.

Claims (6)

A core housed inside the filtration section for supporting the filtration section of the filter, Compose a plurality of through-hole core sheet formed by overlapping, The plurality of through holes are arranged in communication with each other in a state in which the core sheet is wound, the core for the filter element, characterized in that the hollow portion is formed inside the wound core sheet. The method of claim 1, The transverse spacing between the through-holes formed in the core sheet is narrowed toward the portion forming the inner side when the core sheets are wound so that they can communicate with each other in the radial direction when the core sheets are wound. core. The method according to claim 1 or 2, And the core is made of paper or plastic resin. The method according to claim 1 or 2, An end of the core sheet is formed with an adhesive portion coated with an adhesive, characterized in that the filter element core. A filter element equipped with a core for filter elements according to claim 1, A filtration unit accommodating the core from the inside; An upper cap and a lower cap fixed to upper and lower portions of the filtration unit, And the upper cap and the lower cap are made of paper or plastic resin. The method of claim 5, wherein Openings are formed in the upper and lower caps, respectively, and the openings have an annular band shape extending into the core.

Images