KR102617815B1 - Cageless filter cartridge - Google Patents

Abstract

A non-adhesive cageless cartridge filter according to the present invention includes a cylindrical filter medium having a hollow portion; a first end cap and a second end cap blocking the hollow at both ends of the cylindrical filter medium; and a connecting rod provided inside the hollow and having a first end connected to the first end cap and a second end connected to the second end cap, wherein the filter medium and the end cap are physically connected to each other. It is characterized by being separable.

Description

Cageless filter cartridge {Cageless filter cartridge}

The present invention relates to filter cartridges, and more particularly to cage-less filter cartridges.

A filter cartridge is generally constructed in the form of a cage surrounding a filter medium inside. 1 is a general structure of a conventional filter cartridge.

According to this, the filter cage 10 is the external structure of the filter cartridge and is generally made of synthetic resin such as polypropylene, and protects the filter medium and provides durability against high pressure.

In addition, the filter medium 20 is a core part of the filter cartridge and removes or separates impurities by passing liquid or gas, and is generally made of materials such as polypropylene, nylon, and polyester. At this time, the filter medium is composed of various fine pore sizes, so that various particle sizes can be removed, and both ends of the filter medium are provided with synthetic resin end caps that close the filter.

However, the filter cage of the conventional cartridge filter is made of synthetic resin and is discarded after use, causing environmental problems, and the end caps that close both ends of the filter medium are usually treated with adhesive, making the filter medium and end cap 30 of different materials. There is a problem in that it cannot be recycled because it cannot be separated from each other. Additionally, when disposing of filters after replacement, they cannot be separated by material, making separate recycling impossible.

Republic of Korea Patent No. 10-2222409 (Registration date: 2021.02.24)

One aspect of the present invention aims to provide a filter cartridge in which each component of the filter cartridge has a structure that is separable from each other.

In addition, another aspect of the present invention aims to provide a filter cartridge that can be recycled for each component material.

In addition, another aspect of the present invention aims to provide a filter cartridge that has higher filtering efficiency and removes various substances by applying two or more filter media so that the fluid passes through the two filter media.

In addition, another aspect of the present invention aims to solve the problem that some of the components of the filter cartridge are stuck to the external case and cannot be separated during the replacement process without using adhesive.

A non-adhesive cageless cartridge filter according to one aspect of the present invention,

A cylindrical filter medium provided with a hollow body;

a first end cap and a second end cap closing the hollow at both ends of the cylindrical filter medium; and

Including a connecting rod provided inside the hollow and having a first end connected to the first end cap and a second end connected to the second end cap,

The filter medium and the end caps are physically separable from each other.

At this time, the filter preferably includes a first filter medium and a second filter medium provided on the outer surface of the first filter medium to provide continuous filtering.

Additionally, the first filter medium is preferably one selected from the group consisting of activated carbon, calcium sulfate (CaSO4), and ion exchange resin.

In addition, the second filter medium is preferably one selected from the group consisting of polypropylene, PES (Polyether Sulfone), PTFE (Polytetrafluoroethylene), and PVDF (Polyvinylidene Fluoride).

Additionally, the thickness ratio of the first filter medium and the second filter medium is preferably 1:1 to 1:2.

Additionally, it is preferable that a sealing gasket is provided between the cylindrical filter and the end cap.

In addition, the first end cap has a first protruding hole that protrudes inward and has a hollow penetrating the first end cap, and the second end cap has a first protruding groove that protrudes inward and has a groove therein. It is equipped,

The first end of the connecting member has a first fitting member fitted into the first protruding hole, and the second end of the connecting member has a second fitting member fitted into the first protruding groove. 1. It is desirable for the fitting member to have an internal hollow inside.

In addition, the first end cap is provided with a first protruding hole that protrudes inward and has a hollow penetrating the interior, and a second protruding hole that protrudes outward and the hollow is extended,

The second end cap is provided with a first protruding groove that protrudes inward and has a groove therein,

The first end of the connecting rod passes through the first protruding hole and the second protruding hole and has a hook portion that catches the protruding end of the second protruding hole as a locking protrusion,

It is preferable that the second end of the connecting member is provided with a fitting member fitted into the first protruding groove.

In addition, the hook portion preferably has a first extension portion and a second extension portion that are bifurcated at the end, and a hook is provided at each end of the first extension portion and the second extension portion.

In addition, it is preferable that an external case on which the cartridge filter is mounted is further provided.

The filter cartridge according to an embodiment of the present invention does not have a cage to protect the filter medium, so it can contain a filter medium with a large capacity in the same space or contain different types of filter media, providing a highly efficient filtering effect. .

In the filter cartridge according to an embodiment of the present invention, the main components, the filter and the end cap, are not connected by adhesive, so they can be easily separated from each other, and thus recycling or environmentally friendly disposal, that is, separate collection of single materials, is possible for each component.

In addition, the filter cartridge according to the embodiment of the present invention does not use adhesive, so during the replacement process, some of the components of the filter cartridge are adhered to the external case and are not separated, and the entire filter cartridge to be replaced is easily detached.

1 is a schematic diagram of the structure of a filter cartridge according to the prior art.
Figure 2 is a perspective view of a filter cartridge according to an embodiment of the present invention.
Figure 3 is an exploded perspective view of a filter cartridge according to an embodiment of the present invention.
Figure 4 is a cross-sectional view of a filter cartridge according to an embodiment of the present invention.
Figure 5 is a diagram of an end cap according to an embodiment of the present invention.
Figure 6 is a cross-sectional view of a filter cartridge according to another embodiment of the present invention.
Figure 7 is a diagram of an end cap according to another embodiment of the present invention.
Figure 8 is a diagram of a connecting rod according to another embodiment of the present invention.
Figure 9 is an explanatory diagram illustrating the flow of fluid in a filter cartridge according to the present invention, taking the second embodiment as an example.

Hereinafter, the present invention will be described in detail with reference to embodiments. In describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description will be omitted.

Additionally, when describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the component is not limited by the term. When a component is described as being “connected,” “coupled,” or “connected” to another component, that component may be directly connected or connected to that other component, but there is another component between each component. It will be understood that elements may be “connected,” “combined,” or “connected.”

Additionally, when a component, such as a layer, membrane, region, plate, etc., is said to be "on" or "on" another component, it means not only that it is "directly above" the other component, but also that there is another component in between. It should be understood that it can also include cases. Conversely, when an element is said to be "right on top" of another part, it should be understood to mean that there is no other part in between. In addition, being "on" or "on" a reference part means being located above or below the reference part, and necessarily meaning being located "above" or "on" the direction opposite to gravity. no.

In addition, when describing the present invention, when a part "includes" a certain component, this does not mean excluding other components, but may further include other components, unless specifically stated to the contrary. do.

In addition, in explaining the present invention, when we say “on a plane” it means when the target part is viewed from above, and when we say “on a cross section” it means when we look at a cross section cut vertically from the target part from the side.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

<First embodiment>

Figure 2 is a perspective view of a filter cartridge according to an embodiment of the present invention. Figure 3 is an exploded perspective view of a filter cartridge according to an embodiment of the present invention. Figure 4 is a cross-sectional view of a filter cartridge according to an embodiment of the present invention. Figure 5 is a diagram of an end cap according to an embodiment of the present invention.

According to this, the filter cartridge according to the present invention is a cageless filter cartridge including a filter medium (110:111, 112), an end cap (120, 130), a connecting rod (140), and a sealing gasket (160).

The filter medium (111, 112) is a medium that filters particles. The filter medium according to the present invention is a cylindrical medium, and the material, number, and type of the filter medium according to the present invention are inherently limited for implementation of the present invention. Therefore, it is not limited to carbon filters, depth filters, melt blown filters, etc.

A carbon filter is a filter used to remove impurities such as odor, taste, pigment, and chlorophyll by using carbon such as activated carbon as a filter medium.

The depth filter is composed of a multi-layer structure and is a filter that allows particles to penetrate deep into the object. It uses filter media such as polypropylene, nylon, and polyester. These filter media come in various diameters and thicknesses. It is made up of fibers with , and due to the combination of various fiber sizes and densities, the depth filter can effectively remove various particle sizes. In particular, depth filters are easy to maintain and replace due to their simple structure and large filter media area.

Melt-blown Filter: A melt-blown filter is a filter medium made of polymer resin. It is manufactured by melting polymers such as polypropylene and then spraying them onto a drum that rotates at high speed. This filter is used to remove fine particles and impurities, and is generally used in water purifiers, air purifiers, etc.

Since the main purpose of the present invention is water filtration for faucets or showers, a carbon filter and a depth filter can be preferably used continuously.

At this time, the depth filter may be composed of three layers, the inner layer, the first layer, is composed of the first thickness, the middle layer, the second layer, is composed of the second thickness, and the outer layer, the third layer, is composed of the third thickness. It is composed.

The first thickness: second thickness: third thickness is preferably 1:1 to 3:0.3 to 0.5. If you set the first thickness: second thickness: third thickness to 1: 1 ~ 3: 0.3 ~ 0.5, each layer can effectively remove substances of the particle size that the layer is designed to filter. This ratio also ensures that as much material is removed as possible while maintaining water flow.

Therefore, it is desirable that the thickness ratio of the first layer, second layer, and third layer is set to 1:1 to 3:0.3 to 0.5 because this ratio achieves the most efficient balance between filtering performance and flow resistance. Because. This, of course, may vary depending on the properties of the specific material to be filtered and the required filtering capacity.

That is, in the present invention, the filter medium may be composed of a cylindrical carbon filter with a hollow interior as the first filter medium 111 and a depth filter surrounding the carbon filter on the outside of the carbon filter as the second filter medium 112.

At this time, the thickness of the first filter medium 111 and the thickness of the second filter medium 112 are preferably 1:1 to 1:2. If the ratio is less than 1:1, the depth filter's filtration performance maintenance period becomes shorter than the carbon filter's adsorption performance maintenance period. If it exceeds 1:2, there is a problem that the adsorption performance maintenance period of the carbon filter becomes shorter compared to the filtration performance maintenance period of the depth filter. It is appropriate that the replacement times according to the performance maintenance period of the first filter medium 111 and the second filter medium 112 are similar by using a filter medium of an appropriate thickness ratio. This may, of course, vary depending on the concentration and total amount of material to be filtered.

The end cap has a first end cap 120 and a second end cap 130 attached to both ends of the filter medium. It prevents the fluid that has penetrated into the cylindrical interior of the filter from leaking out to both ends of the filter medium and prevents the fluid from leaking out of the filter medium. It is a plate-shaped material that allows penetration vertically into the cylindrical surface rather than both ends, and the material is mainly synthetic resin. The end cap is a structure that performs the essential function of allowing the filter medium to function as a filter. Without the end cap, for example, fluid passes through the cavity of the filter medium without completely penetrating, or fluid penetrates from the outside to the inside of the filter medium. Because it leaks out, it cannot function as a filter. For this purpose, potting material was used to chemically firmly bond the end cap to the filter medium.

However, when the end cap and the filter medium are chemically bonded, the end cap and the filter medium, which are made of different materials, have a structure that cannot be easily separated, making it very difficult to recycle and impossible to separate and collect as a composite material when discarded.

The first end cap 120 protrudes inward and has a first protruding hole that has a hollow interior, and the second end cap 130 protrudes inward and has a first protruding groove that does not have a hollow interior. . Due to the hollowness of the first protruding hole, the fluid that has passed through the filter medium can flow outward. In addition, the protrusions outside the first protruding hole 121 and the second protruding groove 131 are inserted into the hollow of the first filter medium 111 to form the first end cap 120, the second end cap 130, and the filter medium. make them physically bonded.

The connecting rod 140 is a structure that connects the first end cap and the second end cap, and one end is coupled to the first end cap and the other end is coupled to the second end cap. The connecting rod is used to physically connect the end cap and the filter medium without chemically adhering to the filter medium. That is, as the connecting rod 140 penetrates the hollow of the filter medium, one end is coupled to the first end cap 120, and the other end is coupled to the second end cap 130 to physically couple the end cap and the filter medium. .

In order to couple the end cap and the connecting rod, the connecting rod may be provided with a coupling means. The coupling means is not limited, but in this embodiment, the coupling means is a first fitting member 145a provided at the first end of the connecting rod 140 and a second fitting member 145b provided at the second end of the connecting rod 140.

The first fitting member is provided at the edge of the portion connected to the connecting member and has at least one internal hollow 146 penetrating the fitting member. Due to the internal hollow, the filter can be inserted into the first protruding hole 121 and at the same time allow the fluid inside the filter to flow out to the outside through the internal hollow.

The first fitting member 145a and the second fitting member 145b are press-fitted into the first protruding hole and the first protruding groove, so that the end cap 120 and the connecting rod 140 are implemented as a physically coupled body. It can be.

It is preferable that a sealing gasket 160 is further provided between the end caps and the filter medium. The sealing gasket prevents fluid that has passed through the filter from leaking through the gap between the end cap and the filter medium, and prevents fluid from passing to the outside without properly penetrating the filter.

<Second Embodiment>

Figure 6 is a cross-sectional view of a filter cartridge according to a second embodiment of the present invention, Figure 7 is a view of an end cap according to a second embodiment of the present invention, and Figure 8 is a view of a connecting rod.

According to this, in this embodiment, the first end cap of the first embodiment further includes a second protrusion hole 123 that communicates with the first protrusion hole 121 and protrudes outward. The second protruding hole 123 is provided with a hollow extending from the first protruding hole 121, and the outer end of the second protruding hole 123 functions as a locking protrusion on which a hook can be hung.

The connection bar 140 further includes a hook portion 147 having hooks 142 and 144 at the first end penetrating the first protruding hole 121 and the second protruding hole 123.

The hook portion 147 is manufactured in a flat shape so that the fluid can flow out through the hollow, allowing the fluid to flow out to the outside through the gap space in the hollow.

One embodiment of the hook portion 147 includes a first extension portion 141 and a second extension portion 143 extending in two branches from the connection band, and the end and second extension portion of the first extension portion 141 A first hook 142 and a second hook 144 are provided at the end of the portion 143.

As a result, the first extension part 141 and the second extension part 143 are bent and contracted when passing through the hollow, so that they can pass through, and after passing through the hollow, they return by elasticity to the outside of the above-described second protruding hole. It is provided so that it can be hung on the end.

The second embodiment has a particularly useful effect when replacing filters. That is, when replacing the filter, in the case of the structure of Example 1, the first fitting member is simply connected to the first protruding hole by an interference fit, so the coupling force is weak, so when the filter is pulled downward to replace the first fitting member, the first fitting member connected to the connection bar It has the effect of solving the problem of only the connecting rod being removed without being removed at the same time as the end cap. In the case of the structure of Example 2 (FIG. 9), the second protruding hole 123 of the filter cartridge and the external case 200 are coupled with an O-ring to have a strong coupling force. Therefore, when replacing the filter cartridge by pulling it downward, only the first end cap 120 may be separated from the filter cartridge and remain in the outer case 200 due to the O-ring coupling. In order to completely separate the filter cartridge from the external case, the first hook 142 and the second hook 144 of the connecting rod 140 apply downward force to the first end cap 120 to separate it from the O-ring coupling. You can.

Hereinafter, the fluid flow in the filter cartridge according to the present invention will be described using the second embodiment as an example with reference to FIG. 9. Fluid from the outside flows into the inside of the outer case through the inlet 211, and the fluid flowing into the outer case passes through the first filter medium to first remove impurities, and then passes through the second filter medium again to remove 2 Impurities are gradually removed and flow into the cylindrical filter medium.

At this time, the fluid flowing into the filter medium is a purified fluid and flows out through the upper hollow. The first end of the upper part of the connecting rod is flat and there is a space between the hollow and the outlet 215 of the outer case through the hollow. It can leak through.

The above description is merely an illustrative description of the present invention, and those skilled in the art will be able to make various modifications without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in this specification are for illustrative purposes rather than limiting the present invention, and the spirit and scope of the present invention are not limited by these embodiments. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technologies within the equivalent scope should be interpreted as being included in the scope of rights of the present invention.

110: filter media
111: first filter medium
112: second filter medium
120: first end cap
121: first protruding groove
123: 1st protruding hole
130: second end cap
131: Second protruding groove
140: connecting rod
141: 1st extension
142: 1st hook
143: 2nd extension
144: 2nd hook
145: Fitting member
160: Gasket for sealing
200: External case

Claims (10)

A cylindrical filter medium provided with a hollow body;
a first end cap and a second end cap closing the hollow at both ends of the cylindrical filter medium; and
Including a connecting rod provided inside the hollow and having a first end connected to the first end cap and a second end connected to the second end cap,
The filter medium and the end caps are physically separable from each other.
The first end cap is provided with a first protruding hole that protrudes inward and has a hollow penetrating the interior, and a second protruding hole that protrudes outward and has the hollow extending,
The second end cap is provided with a first protruding groove that protrudes inward and has a groove therein,
The first end of the connecting rod passes through the first protruding hole and the second protruding hole and has a hook portion that catches the protruding end of the second protruding hole as a locking protrusion,
A non-adhesive cageless cartridge filter wherein the second end of the connecting member has a fitting member fitted into the first protruding groove. According to paragraph 1,
The filter medium includes a first filter medium and a second filter medium provided on an outer surface of the first filter medium. A non-adhesive cageless cartridge filter that provides continuous filtering. According to paragraph 2,
The first filter medium is a non-adhesive cageless cartridge filter selected from the group consisting of activated carbon, calcium sulfate (CaSO4), and ion exchange resin. According to paragraph 3,
The second filter medium is a non-adhesive cageless cartridge filter selected from the group consisting of polypropylene, PES (Polyether Sulfone), PTFE (Polytetrafluoroethylene, and PVDF (Polyvinylidene Fluoride)). According to clause 4,
A non-adhesive cageless cartridge filter wherein the thickness ratio of the first filter medium and the second filter medium is 1:1 to 1:2. According to clause 5,
A non-adhesive cageless cartridge filter having a sealing gasket between the filter medium and the end cap. According to paragraph 1,
The first end cap has a first protruding hole that protrudes inward and has a hollow penetrating the first end cap, and the second end cap has a first protruding groove that protrudes inward and has a groove therein. ,
The first end of the connecting member has a first fitting member fitted into the first protruding hole, and the second end of the connecting member has a second fitting member fitted into the first protruding groove. 1. The fitting member is a non-adhesive cageless cartridge filter with an internal hollow inside. delete According to paragraph 1,
A non-adhesive cageless cartridge filter wherein the hook portion has a first extension portion and a second extension portion that are bifurcated at an end, and hooks are provided at each end of the first extension portion and the second extension portion. A filter provided with an external case on which the non-adhesive cageless cartridge filter of claim 1 is mounted.