Filter Cartridge of Water Purification System

Abstract

The invention relates to water purification devices of gravity type, intended for final purification of tap water and other liquids for household purposes.

From the state of the art water purification devices of gravity type usually consist of three elements: container for the raw liquid and container for purified liquid, which communicate with each other through water filtration cartridge. Raw liquid is poured into container for raw liquid and under gravity forces it flows through filtration cartridge and collects in the container for purified liquid. As it is known filtration cartridge consists of filtration zone and venting zone. Venting zone is executed as the lid with openings for raw liquid inflow and air outflow, and filtration zone. Filtration zone has in its bottom not less then one opening for purified water outflow and as usual is filled with filtration material. For example granulated and fibrous sorbents can be used as filtration materials in such purification devices.

Filtration cartridge of liquid purification device consists of filtration zone and venting zone, filtration zone in its turn consists of housing filled with the filtration material and not less than one opening made in the bottom of the housing, venting zone consists of fixation means and the lid, characterized in that filtration material has multi clustered interconnected structure, and venting zone is performed so as to retain and keep the main structure of the filtration material inside the housing of then filtration cartridge, by means of that fixation means is the first retention barrier and is made as a grid, the size of meshes of grid preferably is not more than average size of the filtration material cluster, and the lid is made as the second retention barrier and is made with the meshes which size is preferably not less than ten times less than size of the openings of the fixation means.

Claims

1. Filtration cartridge of liquid purification device consists of filtration zone and venting zone, filtration zone in its turn consists of housing filled with the filtration material and not less than one opening made in the bottom of the housing, venting zone consists of fixation means and the lid, characterized in that filtration material has multi clustered interconnected structure, and venting zone is performed so as to retain and keep the main structure of the filtration material inside the housing of the filtration cartridge, by means of that fixation means is the first retention barrier and is made as a grid, the size of meshes of grid preferably is not more than average size of the filtration material cluster, and the lid is made as the second retention barrier and is made with the meshes which size is preferably not less than ten times less than size of the openings of the fixation means.

2. Filtration cartridge of liquid purification device, according to claim 1, characterized in that the lid comprises net elements and top point of the lid is positioned at a distance preferably not more than 1 cm above fixation means.

3. Filtration cartridge of liquid purification device, according to claim 1, characterized in that net elements can be made of woven and none woven material or can be produced together with the lid by direct molding, the size of mesh is preferably not less than 50 microns, but not more than 250 microns.

4. Filtration cartridge of liquid purification device, according to claim 1, characterized in that fixation means has flat or more complicated configuration for example, wavelike, cone-shaped or stepped configuration.

5. Filtration cartridge of liquid purification device, according to claim 1, characterized in that filtration material is the composite material, containing granulated material and fibrous component.

6. Filtration cartridge of liquid purification device, according to claim 5, characterized in that filtration material structure is formed by clusters, containing interlaced fibers with granules of the sorbent distributed inside, the clusters are binded together by individual fibers throughout the volume of the filtration material.

7. Filtration cartridge of liquid purification device, according to claim 1, characterized in that the average size of the cluster of the filtration material preferably is not less than 1.5 mm, but not more than 15 mm.

8. Filtration cartridge of liquid purification device, according to claim 1, characterized in that the gas outlet means is made in the lid, performed as apertures in amount from 1 to 20 (but not more than 20) the size of which is from 0.5 to 1.5 mm and at least one aperture for gas outlet is located in the upper part of the lid.

9. Filtration cartridge of liquid purification device, according to claim 7, characterized in that not less than one aperture of the gas outlet means is located in the upper part of the lid.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The FIG. 1 depicts vertical cross-section of the filtration cartridge of the water purification device.

[0020] The FIGS. 2 and 3 depict the venting zone in details.

DETAILED DESCRIPTION OF THE INVENTION

[0021] Filtration cartridge of the water purification device (FIGS. 1-3) comprises filtration zone 1 and venting zone 6. Filtration zone 1 consists of a housing 2 filled with the filtration material 3 and having not less than one opening 5 in its bottom 4. Venting zone 6 consists of fixation means 7 and a lid 8.

[0022] Filtration material 3 (FIG. 1) has multi clustered structure formed by granulated and fibrous sorbents. Every cluster is interlaced fibers with sorbent granules distributed between them. Inside the clusters fibers retain sorbent granules, preventing their moving and compression, occurring because of dipole-dipole (van der Waals) forces. The multi cluster structure is formed because individual fibers interlace around mentioned clusters throughout the volume of the of the filtration material. The average cluster size of the filtration material is from 1.5 to 15 mm.

[0023] Highly-efficient finely dispersed adsorbents, for example, powdered activated carbon and/or ion exchange resins of different dispersion can be used as granulated sorbents, and ion exchange fibers and activated carbon fibers, fibers on the basis of polyacrylonitrile can be used as fibrous sorbent.

[0024] Fixation means 7 is the first retaining barrier and is made as a grid. The indicated grid may have flat (FIGS. 1-3) configuration or, for example, wavelike, cone-shaped or stepped configuration (not depicted in the figures). If the grid has wavelike, cone-shaped or stepped configuration the fixation of the filtration material inside the housing 2 will be stronger. The size of the meshes 11 (FIGS. 2, 3) of the grid 7 is not more than the average size of the filtration material cluster. Besides retaining and fixation of the filtration material fixation means 7 prevents an air bubble formation between the filtration material surface and venting zone 6.

[0025] This happens because the size of the openings of the fixation means 7 is big enough, so there is no collision between liquid flow and air flow. Besides this, because of interconnected clustered structure of the filtration material 3 there is no clogging of mesh of the fixation means 7 with granulated sorbent particles of filtration material 3.

[0026] The lid 8 (FIG. 1-3) is provided with net elements (FIG. 1) and the top point 9 of the lid 8 is preferably 1 cm higher than fixation means 7 (FIG. 1-3). The size of the mesh 12 (FIG. 1) is much less than the size of the mesh 11 (FIGS. 2, 3) of the fixation means 7 FIGS. 1-3) and is from 50 to 250 mkm. The lid (8) is the second retention barrier 8. The net prevents penetration of the minor particles of the granulated component of the filtration material 3 out of the venting zone 6 in case they fell in there (for example after mechanical impact during transportation)

[0027] The lid 8 net elements may be made of polymeric textile or none woven material or may be produced together with the lid 8 by direct casting.

[0028] The air venting means 10 (FIGS. 2, 3) can be made in the upper pat of the of the lid 8. This venting means 10 is one or group of the openings in amount not more than 20. The size of the opening preferably is from 0.5 to 1.5 mm.

[0029] Because there are few openings and they are of small size the particles of granulated component of the filtration material 3 can't leave the venting zone 6 even in case of direct water flow on these particles.

[0030] Filtration cartridge of the water purification device acts as follows. The raw water flows through mesh of the net of the lid 8, further through the venting zone 6 and the mesh 11 of the fixation means 7, passes into filtration material 3 in the housing 2 of the filtration zone 1, where the liquid is purified. Purified liquid flows out of at least one opening 5, made in the bottom of the housing 4. At the same time air leaves the filtration zone 1 through mesh of the fixation means 7 without air bubble formation. Then the air flows out through the mesh of the net of the lid 8 and/or through the air venting means (9).

[0031] Compared to filtration cartridges, described in the state of the art in the given cartridge filtration material has a multi clustered structure, which retains during filtration cartridge service life. The indicated structure decreases the possibility of channel effects occurrence, prevents the compacting of the filtration material during filtration and clogging the part of the usable volume of the filtration material with air. Besides here is no air bubble formation step. The absence of the air bubble formation step is determined by fixation means construction, which is the first retention barrier, and its mesh let the air go out of the filtration zone freely, construction of the lid, which is the second retention barrier, and multi clustered structure of the filtration material. So, as stated above, the given construction of the filtration cartridge allows to increase the filtration speed and decrease the filtration time.

[0032] In the description of the invention the preferable embodiment is given. The invention maybe changed, but within the limits of the present claims. This gives the possibility of its common use.