RU221261U1 - Filter element for liquid purification with air removal function - Google Patents

Abstract

The utility model relates to the field of liquid purification, namely to filtration devices intended for use in filters for liquid purification, mainly in jug-type filters for drinking water. A filter element for cleaning liquid with an air removal function includes a hollow body (1), in the lower part of which there is a hole for the outlet of the purified liquid, a cover with holes (3) for the inlet of the liquid to be cleaned and holes (4) for the outflow of air, placed on top of the body (1 ), a cone-shaped insert for air exhaust, located in the housing (1) under the cover, including an upper part (6) in the shape of a truncated cone, in the upper base of which there are holes for air outlet, and a lower part (7) with holes (9) for inlet of the liquid to be purified, and a filter medium in the form of a mixture of solid sorbents, placed in the housing (1). The cone-shaped insert for air removal is made of a single piece of solid material, and its lower part (7) contains a lip seal (12) along the edges adjacent to the body (1). The technical result of the claimed utility model is to simplify the process of assembling the filter element structure while maintaining its functional properties, including the removal of air from the filter element housing. 4 salary f-ly, 3 ill., 1 table.

Description

[01] Technical field

[02] The utility model relates to the field of liquid purification, namely to filtration devices intended for use in filters for purifying liquids, mainly in jug-type filters for drinking water.

[03] State of the art

[04] Filtration devices (filter elements, cartridges, filter cartridges, replaceable filters, cassettes) consisting of a housing filled with filter media (material, sorbent) and a lid are known from the prior art. The lid contains inlet holes for the liquid to be cleaned and holes for air outflow. Between the cover and the body there is usually a means for fixing the filter load in the form of a mesh, membrane or gasket. At the bottom of the body of such devices there are one or more holes for the outlet of purified liquid. The filtration device is inserted into a container to receive the source liquid. The source liquid passes through the holes located in the lid and below through the filter media, then the purified liquid through the hole (or holes) in the lower part of the housing enters the receiving container (container for purified liquid).

[05] The use of a fixation means in the described filtration devices, made in the form of a mesh, membrane or gasket, quite often leads to a slowdown or interruption of the filtration process due to an air bubble that appears under the fixation means, blocking its effective cross section due to the occurrence of surface of the surface tension fixing means. The formation of an air bubble is explained by the fact that when liquid flows through the filter material, the air located between the granules or fibers of the sorbent, as well as inside the porous structure of the sorbent, is displaced upward by the liquid and accumulates under the means of fixing the filter load.

[06] Thus, there is a need to use filtration devices that provide not only effective purification of liquids from harmful impurities, but also removal (removal) of air, which slows down the process of liquid filtration.

[07] The closest analogue of the solution is the filter element described in US patent US 9132369B2, September 15, 2015. The filter element for cleaning liquid contains a hollow body, a cover with holes for inlet of the liquid to be cleaned and air outflow, placed on top of the body, an insert for air exhaust located in the body under the cover, including an upper part, in the upper base of which there are holes for air outlet, and a lower part a part with holes for the entry of the liquid to be cleaned, a filter media placed in the cavity of the housing.

[08] The disadvantage of this device is that the air exhaust insert contains an upper part, the upper base of which, containing air outlet holes, is made of a built-in mesh hydrophobic material, while the main part of the insert is made of a solid polymer material, which leads to to more complex designs and manufacturing processes for this insert, requiring several assembly operations (for example, fusing or gluing mesh into the upper base of the insert). Another disadvantage of the closest analogue is the lack of rigid fixation of the insert for air removal in the filter element housing, and therefore there is a risk of particles of the filter media getting into the liquid, and also complicates the process of assembling the filter element, since before welding these elements, an operation will be required to center the insert for air removal in the filter element housing and cover. In addition, the removal of air from the specified filter element is based on the operating principle of a siphon, that is, the upper base of the insert for air removal must be in the air space and not in contact with the liquid, which also leads to a more complex design and the presence of additional conditions during operation that may be violated by the user.

[09] Thus, the technical problem that the claimed utility model is aimed at solving is the complexity of producing filter devices with the function of removing air from the housing.

[010] Disclosure of the essence of the utility model

[011] The technical result of the claimed utility model is to simplify the process of assembling the filter element structure while maintaining its functional properties, including the removal of air from the filter element body, due to the presence of a cone-shaped insert for air removal, made of a single piece of solid material with the possibility of a tight fit to body.

[012] The specified technical result is achieved due to the fact that the filter element for cleaning liquid with an air removal function includes a hollow body, in the lower part of which there is a hole for the outlet of the purified liquid, a cover with holes for the inlet of the liquid to be cleaned and holes for air outflow, placed on top housing, a cone-shaped insert for air exhaust located in the housing under the cover, including an upper part in the shape of a truncated cone, in the upper base of which there are holes for air outlet, and a lower part with holes for the entry of the liquid to be cleaned, and a filter media in the form of a mixture of solids sorbents placed in the housing, while the cone-shaped insert for air removal is made of a single piece of solid material, and its lower part contains a lip seal along the edges adjacent to the housing.

[013] In special cases of implementing a utility model:

[014] - the lower part of the cone-shaped insert for air removal is made in the form of a disk, the edge of which protrudes beyond the boundaries of the upper part of the cone-shaped insert, and the holes for the inlet of the liquid to be cleaned are located on the specified protruding edge;

[015] - granular and/or fibrous sorbents are used as solid sorbents;

[016] the size of the air outlet holes and the inlet holes for the liquid to be cleaned of the cone-shaped insert for air removal does not exceed the particle size of the filter media;

[017] - the solid material from which the cone-shaped insert for air removal is made is polypropylene or polyethylene.

[018] The cone-shaped insert for air exhaust in the claimed technical solution is a single piece, that is, made of a homogeneous material without the use of any assembly operations. Said insert includes an upper part in the shape of a truncated cone and a lower part in the shape of a disk. The upper base of the truncated cone is a mesh surface with holes for air to exit from the housing, and the lower part is a mesh surface with holes for the entry of the liquid to be cleaned into the filter element housing, while these mesh surfaces are made of the same solid material, for example, polyethylene or polypropylene, that and the remaining parts of the cone-shaped insert for air removal.

[019] The presence of a lip seal along the edges of the lower part of the cone-shaped insert for removing air adjacent to the filter element body also simplifies the process of assembling the device, since it eliminates the operation of centering the said element in the body and cover before welding its main parts (body, cover and cone-shaped insert for air removal).

[020] Brief description of drawings

[021] The utility model is illustrated by figures, where

[022] in Fig. Figure 1 shows a general cross-sectional view of a filter element for liquid purification with an air removal function;

[023] in Fig. Figure 2 shows the upper part of the filter element, namely the cover, under which there is a cone-shaped insert for air removal in section.

[024] in fig. Figure 3 shows a cross-sectional top view (B-B in Fig. 1) of the upper part of the filter element, namely the cover, under which there is a cone-shaped insert for air removal, as well as a cross-sectional top view (A-A in Fig. 1) under cover over the bottom of the cone-shaped insert for air removal.

[025] The elements are designated in the figure as follows:

1 - body;

2 - cover;

3 - holes in the cover (2) for the entry of the liquid to be cleaned into the housing (1);

4 - holes in the cover (2) for air outflow from the housing (1);

5 - cone-shaped insert for air removal;

6 - upper part of the cone-shaped insert (5) for air removal;

7 - lower part of the cone-shaped insert (5) for air removal;

8 - air outlet holes located in the upper part (6) of the cone-shaped insert (5) for air exhaust;

9 - holes for the inlet of the liquid to be cleaned, located in the lower part (7) of the cone-shaped insert (5) for air removal;

10 - hole for the outlet of purified liquid from the housing (1);

11 - filter media;

12 - lip seal located along the edges of the lower part (7) of the cone-shaped insert (5) for venting air to the body (1);

13 - lower means of fixing the filter load (11).

[026] Implementation of a utility model

[027] The filter element for liquid purification (Fig. 1) with an air removal function consists of a housing (1) filled with filter media (material) (11), a cover (2) and a cone-shaped insert (5) for air removal. In the cover (2), located on top of the housing (1), holes (3) are designed for the entry of the liquid to be cleaned into the housing (1), located on the side along the perimeter of the cover (2), and holes (4) for the outflow of air from the housing (1) located at the top of the cover (2). Under the cover (2) there is a cone-shaped insert (5) for air removal, as well as to prevent particles of the filter media (11) from falling out of the housing (1), made as a single piece. Said insert (5) includes an upper part (6) in the shape of a truncated cone, under which air accumulates, and a lower part (7), preferably in the shape of a circle (disk), the edge of which protrudes beyond the boundaries of the upper part (6) of the cone-shaped insert ( 5). The cover (2) preferably also has a cone shape. Also, in the free space under the upper part (6) of the insert (5) a container (not shown) with a mineralizing load can be placed for mineralization of the liquid being purified. The upper base of the truncated cone is a mesh surface with holes (8) for the release of accumulated air from the housing (1), and the lower part (7) is a mesh surface with holes (9) for the entry of the liquid to be cleaned into the filter element housing (1). In this case, the holes (9) are located on the protruding (relative to the upper part) edge of the lower part (7) and the size of these holes does not exceed the size of the particles of the filter media (11) (Fig. 2). The lower part (7) of the cone-shaped insert (5) includes a lip seal (12) along its edges, which fits tightly to the body (1) of the filter element, thereby fixing the cone-shaped insert (5) in the body (1), and also excluding the ingress of filter particles loading (11) into the liquid to be cleaned. Elements of the cone-shaped insert (5), such as its upper (6) and lower (7) parts, the mesh surface of the upper base of the upper part (6) and lower part (6) with corresponding holes (8,9) and the lip seal (12) made of one solid material, for example, polyethylene or polypropylene. The body (1) may be glass-shaped. A hole (10) is designed in the lower part (base) of the housing (1) for the outlet of purified liquid from the housing (1). In front of the hole (10) for the outlet of the purified liquid from the housing (1), there is a lower means for fixing (13) the filter load (11), made in the form of a mesh or porous insert, or in the form of any other liquid-permeable structure that allows holding the filter load. In the upper part of the housing (1) there is a ring-shaped protrusion that serves to connect the cover (2) with the inner surface of the housing (1) and a cone-shaped insert (5) for air removal, for example, by ultrasonic welding. The lower fixation means (13), located between the filter media (11) and the base of the housing (1), can also be connected to the walls of the housing (1) using ultrasonic welding.

[028] The filter media (11) of the inventive filter element consists of solid sorbents and may include types of ion exchange resins known from the prior art, granular activated carbon, or a mixture thereof.

[029] Below is the operating principle of the device.

[030] A filter element for cleaning liquid with an air removal function is placed in the opening of a container for the liquid to be cleaned, preferably a jug type. The uncleaned liquid through the side holes (3) of the cover (2) for the liquid inlet, and then through the holes (9) for the inlet of the liquid to be cleaned, located in the lower part (7) of the insert (5) for air removal, enters the housing (1), where , depending on the composition of the filter media (11), sorption and/or ion exchange processes occur, due to which harmful substances are removed from the liquid. If there is a container with a mineralizing load in the design of the device, the liquid being purified is also enriched with mineralizing components.

[031] In fig. 2 blue arrows show the flow of the liquid being purified. The liquid comes out cleared of various contaminants through the lower fixation means (13) of the filter load (11) and then through the holes (10) located in the base of the housing (1). In this case, the air accumulated between the particles of the filter media (11), as well as in the pores of the filter media (11), is displaced by liquid and accumulates in the upper part (6) of the cone-shaped insert (5), passes through the holes (8) located in the upper base the upper part (6) of the insert (5) and then through the holes (4) in the cover (2) of the filter element to the outside, due to which the liquid purification process proceeds without interrupting filtration at high speed. In Fig. 2, the flow of exhaust air is indicated by green arrows.

[032] The cone-shaped insert (5), cover (2) and housing (1) of the filter element can be manufactured by methods known to a person skilled in the art, for example, by plastic injection molding. At the same time, the simple design of the device, which has a small number of solid parts connected in production into a single assembly unit, for example, using laser welding, simplifies the production and assembly processes of the device in question.

[033] Table 1 presents the results of tests of the liquid filtration rate of a filter element for liquid purification with an air removal function in accordance with this utility model and a filter element for liquid purification of similar size and composition of the filter load, containing a means of fixing the filter load in the form of a standard flat mesh insert between the body and the cover.

[035] Data is based on a standard filter element having a height of 133 mm and a diameter of 62.4 mm.

[036] Thus, the design of the technical solution under consideration allows us to simplify the process of assembling the parts that make up the filter element, but at the same time retains the purpose and functional features of the device, such as:

[037] - purification of liquid from various contaminants;

[038] - removing air from the filter element housing, thereby not slowing down the process, in particular, the rate of liquid filtration;

[039] - eliminating the possibility of particles of the filter media getting into the purified or purified liquid.

Claims (10)

1. Filter element for liquid purification with air removal function, including a hollow body (1), in the lower part of which there is a hole (10) for the outlet of purified liquid, cover (2) with holes (3) for inlet of the liquid to be cleaned and holes (4) for air outflow, placed on top of the housing (1), a cone-shaped insert (5) for air exhaust, located in the housing (1) under the cover (2), including an upper part (6) in the shape of a truncated cone, in the upper base of which there are holes (8) for air outlet, and a lower part (7 ) with holes (9) for the entry of the liquid to be cleaned, and filter media (11) in the form of a mixture of solid sorbents, placed in a housing (1), characterized in that the cone-shaped insert (5) for air removal is made of a single piece of solid material, and its lower part (7) contains a lip seal (12) along the edges adjacent to the body (1). 2. A filter element for cleaning liquid according to claim 1, characterized in that the lower part (7) of the cone-shaped insert (5) for air removal is made in the form of a disk, the edge of which protrudes beyond the boundaries of the upper part (6) of the cone-shaped insert (5), and holes (9) for the entry of the liquid to be cleaned are located on the specified protruding edge. 3. Filter element for liquid purification according to claim 1, characterized in that granular and/or fibrous sorbents are used as solid sorbents. 4. Filter element for cleaning liquid according to claim 1, characterized in that the size of the holes (8) for the air outlet and the holes (9) for the inlet of the liquid to be cleaned of the cone-shaped insert (5) for air removal does not exceed the size of the particles of the filter media (11). 5. A filter element for purifying liquid according to claim 1, characterized in that the solid material from which the cone-shaped insert (5) for air removal is made is polypropylene or polyethylene.