WO2020258685A1

WO2020258685A1 - Filter

Info

Publication number: WO2020258685A1
Application number: PCT/CN2019/119044
Authority: WO
Inventors: 杨国伟
Original assignee: 苏州凯虹高分子科技有限公司
Priority date: 2019-06-25
Filing date: 2019-11-18
Publication date: 2020-12-30
Also published as: CN110152384A

Abstract

A filter, which comprises: a filter body (1), a support plate (2), an upper cap (3), and a lower cap (4). The filter body (1) comprises in a split-body arrangement: a first filter unit (11) and a second filter unit (12). The first filter unit (11) is connected to one side of the support plate (2); the second filter unit (12) is connected to the other side of the support plate (2). Any filter unit comprises: several microfiltration structures (111) in a downward arrangement. Any microfiltration structure (111) comprises: an upper filtration layer (1111) and a lower filtration layer (1112). The outer edge of the upper filtration layer (1111) is connected to the outer edge of the lower filtration layer (1112). The microfiltration structure (111) on top is connected via the inner edge of the lower filtration layer (1112) thereof to the inner edge of the upper filtration layer (1111) of the microfiltration structure (111) below. The upper cap (3) is connected to the upper end surface of the filter body (1); the lower cap (4) is connected to the lower end surface of the filter body (1). A filter unit of the filter consists of the microfiltration structures (111) in the downward arrangement; this allows the filter unit to be provided with an enlarged specific surface area, thus increasing the area of contact with a fluid, and providing improved filtration effects.

Description

A filter element

Technical field

The present invention relates to the field of filtration technology, in particular to a filter element with a larger specific surface area.

Background technique

Drinking water is an indispensable element for human survival. At the same time, water is also an important medium for spreading diseases and is closely related to people's daily life. For residents living in cities, the source of their drinking water is supplied by the water company. Although the water produced by the water plant meets drinking standards, the tap water is transported by long-distance pipelines in the pipe network, and the pipe network will be worn out due to long-term use, causing rust and other harmful substances inside the pipe network.

In addition, the commonly used method of secondary water supply using high and low pools, etc., urban high-rise water tanks and building pools are not clean or are not disinfected throughout the year. Because the water in the pool is in a dead water state in most cases, it is easy to Cause bacteria to multiply and cause secondary pollution. The secondary pollution causes bacteria, viruses and algae to multiply, plus the original chlorine and chlorides, iron rust, heavy metals, radioactive substances, makes the water turbid, and its harm is endless. Therefore, in a variety of increasingly polluted environments, we should ensure that the water used is clean and healthy.

At present, domestic drinking water is mainly filtered through a filter with a filter element. However, the existing filter element has a relatively small specific surface area, which limits the filtration performance of the filter. Therefore, it is necessary to propose further solutions to the above problems.

Summary of the invention

The present invention aims to provide a filter element to overcome the deficiencies in the prior art.

To solve the above technical problems, the technical solution of the present invention is:

A filter element comprising: a filter element body, a support plate, an upper end cover and a lower end cover;

The filter element body includes a first filter element unit and a second filter element unit arranged separately, the first filter element unit is connected to one side of the support plate, and the second filter element unit is connected to the other side of the support plate ；

Any filter element unit includes: a number of microfiltration structures arranged from top to bottom, and there are filtering gaps between the adjacent microfiltration structures;

Any one of the microfiltration structures includes: an upper filter layer and a lower filter layer, the outer edge of the upper filter layer is connected to the outer edge of the lower filter layer, and there is a filter gap between the upper filter layer and the lower filter layer ；

The upper microfiltration structure is connected to the inner edge of the upper filter layer of the lower microfiltration structure through the inner edge of the lower filter layer;

The upper end cover is connected to the upper end surface of the filter element body and has an upper through hole, and the lower end cover is connected to the lower end surface of the filter element body and has a lower through hole.

As an improvement of the filter element of the present invention, the filter element unit is semi-cylindrical as a whole.

As an improvement of the filter element of the present invention, the upper filter layer and the lower filter layer are both semi-circular ring-shaped layer structures.

As an improvement of the filter element of the present invention, the connections between the upper and lower microfiltration structures and the upper and lower filter layers are smoothly transitioned.

As an improvement of the filter element of the present invention, the filter gap gradually increases away from the connection position.

As an improvement of the filter element of the present invention, the first filter element unit and the second filter element unit are both integrally formed.

As an improvement of the filter element of the present invention, the first filter element unit and the second filter element unit are sintered from modified ultra-high molecular weight PE material.

As an improvement of the filter element of the present invention, both sides of the support plate are provided with a number of limiting protrusions matching the microfiltration structure, and the plurality of limiting protrusions on any surface are symmetrically distributed on both sides of the surface.

As an improvement of the filter element of the present invention, the support plate includes two plate bodies stacked together, and one side of either plate body facing the adjacent filter element unit is provided with a number of limiting protrusions that cooperate with the microfiltration structure. As a result, a number of limit protrusions are symmetrically distributed on both sides of the surface.

As an improvement of the filter element of the present invention, any limiting protrusion is a U-shaped structure arranged transversely along the width direction of the support plate.

As an improvement of the filter element of the present invention, the supporting plate is also provided with water passing holes.

As an improvement of the filter element of the present invention, the upper end cover and the lower end cover are respectively fixed on the end surface where they are located by buckling.

Compared with the prior art, the beneficial effect of the present invention is that the filter element unit of the filter element of the present invention is composed of several microfiltration structures arranged from top to bottom, which makes the filter element unit have a larger specific surface area, thereby increasing The contact area with the fluid has a better filtering effect. At the same time, the filter element of the present invention adopts a split structure, and the filter element unit can be conveniently replaced according to the use situation.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some of the embodiments described in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

Fig. 1 is a three-dimensional schematic diagram of an embodiment of the filter element of the present invention;

Fig. 2 is a perspective exploded schematic view of the filter element in Fig. 1.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

As shown in FIGS. 1 and 2, the filter element of an embodiment of the present invention includes: a filter element body 1, a supporting plate 2, an upper end cover 3 and a lower end cover 4.

The filter element body 1 includes a first filter element unit 11 and a second filter element unit 12 arranged separately, and the two are assembled through the support plate 2 to form the filter element body 1.

In order to obtain a larger specific surface area, any filter element unit has several microfiltration structures 111 that play a filtering role. Specifically, any filter element unit includes a plurality of microfiltration structures 111 arranged from top to bottom, and there are filtering gaps between the microfiltration structures 111 adjacent to each other. At the same time, any one of the microfiltration structures 111 includes: an upper filter layer 1111 and a lower filter layer 1112 that are connected to each other, and there is also a filter gap between the upper filter layer 1111 and the lower filter layer 1112, so arranged, the fluid is filtered It can flow into the above-mentioned filtering gap, and then fully contact with the filter element unit to obtain a better filtering effect.

Further, the size of the aforementioned filtering gap gradually increases. The specific expression is that in the microfiltration structures 111 adjacent to each other up and down, the filtration gap gradually increases along the distance from the connecting position of the two. In the upper filter layer 1111 and the lower filter layer 1112, the filter gap gradually increases away from the connecting position of the two. In this way, it can meet the filtering requirements of large-particle pollutants in the fluid, so that the fluid can flow into the filtering gap, and the filtering effect can be ensured.

The upper microfiltration structure 111 is connected to the inner edge of the upper filter layer 1111 of the lower microfiltration structure 111 through the inner edge of the lower filter layer 1112, and at the same time, the outer edge of the upper filter layer 1111 is connected to the lower filter layer The outer edge of 1112. In this way, the flow stroke of the fluid during the flow of the filter element unit is increased, and the filtering effect is further improved. And the connections between the upper and lower microfiltration structures 111 and the upper and lower filter layers 1112 are smoothly transitioned, so that after the fluid flows through the filter unit, the dirt trapped at the corners of the connection is easily washed away during backwashing. Conducive to the regeneration of the filter element unit.

In this embodiment, the filter element body 1 preferably adopts a cylindrical structure. In order to form the above-mentioned cylindrical structure, the filter element unit is half-cylindrical as a whole. Correspondingly, the upper filter layer 1111 and the lower filter layer 1112 are both semi-circular ring-shaped layer structures. At this time, the microfiltration structures 111 of any filter element unit are sequentially arranged along the axial direction. It should be noted that, under the guidance of the concept of the present invention, the filter element body 1 can also be designed as other similar structures, such as a through polygonal cylinder, or an elliptical cylinder.

Both the first filter element unit 11 and the second filter element unit 12 are integrally formed. Preferably, the first filter element unit 11 and the second filter element unit 12 are sintered from modified ultra-high molecular weight PE material. Specifically, when the first filter element unit 11 and the second filter element unit 12 are formed, a modified ultra-high molecular weight PE raw material is taken, and the PE raw material is sintered through a semi-melt molding to form a filter element unit.

Among them, modified ultra-high molecular weight PE is obtained by freeze-grinding maleic anhydride grafted POE into powder. Specifically, according to the weight ratio: one part of maleic anhydride plus two parts of bimodal HDPE plus seven parts of ultra-high molecular weight PE are mixed uniformly, and the filter element of the present invention is made by semi-melting molding and sintering, which has high flexibility and toughness This facilitates the shaping of the filter element and the assembly and fixation of the filter element during the application process.

When using modified ultra-high molecular weight PE as the raw material, the process parameters of semi-melt compression molding and sintering are: the sintering temperature is set to 160-200°C, the sintering time is 20 to 30 minutes, and the cooling time is 10 to 14 minutes. Preferably, the process parameters of semi-melting press sintering are: the sintering temperature is set to 170-190°C, the sintering time is 25 minutes, and the cooling time is 12 minutes.

The support plate 2 is used for the assembly of the first filter element unit 11 and the second filter element unit 12. Specifically, the first filter element unit 11 is connected to one side of the support plate 2, and the second filter element unit 12 is connected to The other side of the support plate 2. Preferably, the support plate 2 may be an injection molded part.

In order to adapt to the fixation of the microfiltration structure 111 of the filter element unit, both sides of the support plate 2 are provided with a number of limit protrusions 21 that cooperate with the microfiltration structure 111, and a number of limit protrusions 21 on either side are symmetrically Distributed on both sides of the face. Wherein, any limit protrusion 21 is a U-shaped structure arranged transversely along the width direction of the support plate 2, so that the edge of the microfiltration structure 111 can be accommodated in the gap defined by a plurality of limit protrusions 21. 21 plays a role of limiting the microfiltration structure 111.

In addition, in order to facilitate the flow of fluid during filtration, the supporting plate 2 is also provided with water passing holes 22 which can be opened at the upper edge, the lower edge and the middle position of the supporting plate 2. In addition, the water-passing hole 22 is located between the limiting protrusions 21 on both sides, so as to optimize the arrangement of the limiting protrusions 21 and the water-passing hole 22, so that the two are arranged reasonably and avoid mutual influence. Preferably, the water passing hole 22 may be a waist-shaped hole.

Further, the supporting plate 2 may be a whole plate body. In order to facilitate the replacement of the first filter unit and the second filter unit, the support plate 2 can also be formed by two stacked plates. At this time, the support plate 2 includes two plate bodies stacked together, and a side of either plate body facing the adjacent filter element unit is provided with a number of limiting protrusions 21 that are matched with the microfiltration structure 111, Several limiting protrusions 21 are symmetrically distributed on both sides of the surface. In this way, the first filter unit and its support plate 2 can be separated from the second filter unit and its support plate 2.

The upper end cover 3 is connected to the upper end surface of the filter element body 1, and an upper through hole for fluid circulation is opened thereon. The lower end cover 4 is connected to the lower end surface of the filter element body 1 and is provided with Circulating bottom through hole. Preferably, the upper end cover 3 and the lower end cover 4 are respectively fixed on the end surface where they are located by means of buckling.

In summary, the filter element unit of the filter element of the present invention is composed of a number of microfiltration structures arranged from top to bottom, which makes the filter element unit have a larger specific surface area, thereby increasing the contact area with fluid, and has better The filtering effect. At the same time, the filter element of the present invention adopts a split structure, and the filter element unit can be conveniently replaced according to the use situation.

For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description, and therefore it is intended to fall within the claims. All changes within the meaning and scope of the equivalent elements of are included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

In addition, it should be understood that although this specification is described in accordance with the implementation manners, not each implementation manner only includes an independent technical solution. This narration in the specification is only for clarity, and those skilled in the art should regard the specification as a whole The technical solutions in the embodiments can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

A filter element, characterized in that the filter element comprises: a filter element body, a support plate, an upper end cover and a lower end cover;

The filter element body includes a first filter element unit and a second filter element unit arranged separately, the first filter element unit is connected to one side of the support plate, and the second filter element unit is connected to the other side of the support plate ；

Any filter element unit includes: a number of microfiltration structures arranged from top to bottom, and there are filtering gaps between the adjacent microfiltration structures;

Any one of the microfiltration structures includes: an upper filter layer and a lower filter layer, the outer edge of the upper filter layer is connected to the outer edge of the lower filter layer, and there is a filter gap between the upper filter layer and the lower filter layer ；

The upper microfiltration structure is connected to the inner edge of the upper filter layer of the lower microfiltration structure through the inner edge of the lower filter layer;

The upper end cover is connected to the upper end surface of the filter element body and has an upper through hole, and the lower end cover is connected to the lower end surface of the filter element body and has a lower through hole.
The filter element according to claim 1, wherein the filter element unit is semi-cylindrical as a whole.
The filter element according to claim 2, wherein the upper filter layer and the lower filter layer are both a semicircular ring-shaped layer structure.
The filter element according to claim 1, wherein the connections between the upper and lower microfiltration structures and the upper and lower filter layers are smoothly transitioned.
The filter element according to claim 1, wherein the filter gap gradually increases away from the connection position.
The filter element according to claim 1, wherein the first filter element unit and the second filter element unit are both integrally formed.
The filter element according to claim 6, wherein the first filter element unit and the second filter element unit are sintered from modified ultra-high molecular weight PE material.
The filter element according to claim 1, wherein both sides of the support plate are provided with a number of limit protrusions that cooperate with the microfiltration structure, and a number of limit protrusions on either side are symmetrically distributed. Both sides of the face.
The filter element according to claim 1, wherein the support plate comprises two plate bodies stacked together, and any one of the plate bodies facing the adjacent filter element unit is provided with the microfiltration structure to cooperate with each other. A number of limiting protrusions, a number of limiting protrusions are symmetrically distributed on both sides of the surface.
The filter element according to claim 8 or 9, wherein any limiting protrusion is a U-shaped structure transversely arranged along the width direction of the support plate.
The filter element according to claim 1, wherein the supporting plate is also provided with water passing holes.
The filter element according to claim 1, wherein the upper end cover and the lower end cover are respectively fastened to the end surface where they are located by means of buckling.