WO2013182012A1

WO2013182012A1 - Two-in-one filter element of paper fibre and powdered activated carbon and preparation method therefor

Info

Publication number: WO2013182012A1
Application number: PCT/CN2013/076573
Authority: WO
Inventors: 李昆洋
Original assignee: Li kun yang
Priority date: 2012-06-04
Filing date: 2013-05-31
Publication date: 2013-12-12
Also published as: CN102698506A; TW201417876A

Abstract

Provided are a two-in-one filter element of paper fibre and powdered activated carbon and the preparation method therefor. The filter element comprises at least three filtering layers, which are coaxial and closely nested, from inside to outside, an inner layer being a PP filter element (2) in a tubular shape; a middle layer being a two-in-one carbon rod (3) of paper fibre and powdered activated carbon, in a tubular shape and surrounding the PP filter element (2); an outer layer being a fixed protective layer (4), surrounding the two-in-one carbon rod (3) of paper fibre and powdered activated carbon; and end caps (1) for sealing each filter layer of the two-in-one filter element of paper fibre and powdered activated carbon at both ends.

Description

Two-in-one paper fiber powder activated carbon filter core and preparation method thereof

Technical field

The invention relates to a product and a preparation method for drinking water and other clean water purification, medicine, wine making, food decolorization, organic solvent adsorption filtration, in particular to a filter element and a filter element combining paper fiber and activated carbon powder Preparation method.

Background technique

In liquids, whether in industrial production, electroplating solutions, food, beverages, water, or domestic water, it is necessary to keep clean, with the contamination of the liquid during processing, or the addition of chlorine, disinfectant, and processing in tap water treatment. Harm to health. Therefore, most of the activated carbon filter core adsorbs excess organic matter in the liquid to achieve purity, decolorization, deodorization and the like.

(paper fiber powder activated carbon) has a very large (surface area) and strong adsorption, decolorization, odor removal performance, can be widely used in water treatment and air filtration purification, especially in drinking water purification treatment Application range. At present, domestic activated carbon or (paper fiber powder activated carbon filter) mainly adopts molding or winding forming process. The disadvantage of compression molding is that the content of filter element binder is too large, which will significantly reduce the specific surface area of activated carbon or activated carbon fiber. Its adsorption, decolorization and odor removal performance are greatly reduced. Made of twin-formed (paper-fiber activated carbon filter), which tends to cause bacterial growth on the filter element during shutdown. Moreover, the wound activated carbon fiber filter element tends to drop the activated carbon powder during use. The use time should not be too long, because the activated carbon fiber filter will loosen the structure for a long time, and the activated carbon powder will be lost.

The PP filter element is made by polypropylene (PP) hot melt method, and its mi cron number is from 1 um to 300 um. The inner filter has no inner shaft and outer sparse design, which not only maintains stable flow, pressure difference and service life, but also has excellent depth filtration effect and pollutant accumulation. It is a high efficiency, low pressure difference and long service life. And a wide range of filter cartridges. Due to PP The chemical composition is clean and meets the hygienic standards of food. It does not cause secondary pollution to the liquid to be filtered due to the material. It has the characteristics of high flow rate, high precision, corrosion resistance and high pressure resistance. It is widely used in PCB, electroplating and pure water. , pre-filtering treatment of food and drinking water; pre-filtration treatment of R0 infiltration.

Summary of the invention

One of the objects of the present invention is to provide a new filter material, that is, a two-in-one paper fiber powder activated carbon carbon rod, which can overcome the shortcomings of the old paper fiber powder activated carbon filter product, which is not durable and has a short service life. .

Another object of the present invention is to provide a new two-in-one paper fiber powder activated carbon filter which overcomes the disadvantage that the old filter element contains only one filter layer.

The third object of the present invention is to provide a novel two-in-one paper fiber powder activated carbon filter core preparation method, which can efficiently and quickly prepare the above-mentioned two-in-one paper fiber powder activated carbon filter element.

In order to achieve the above object, the present invention adopts the following technical solutions:

A two-in-one paper fiber powder activated carbon filter comprising at least three coaxial tightly sleeved filter layers,

From the inside to the outside: the inner layer is a PP filter, which is tubular;

The middle layer is a 2-in-1 paper fiber powder activated carbon carbon rod, which is tubular and is sleeved outside the PP filter;

The outer layer is a fixed protective layer, which is sleeved outside the two-in-one paper powder activated carbon carbon rod; and an end cap for sealing both ends of each filter layer of the two-in-one paper powder activated carbon filter element.

The two-in-one paper fiber powder activated carbon carbon rod comprises activated carbon powder and paper fiber, mixed with water, made into pulp, and molded. In use, the inner PP filter tube not only has a filtering function, but also functions to support the entire filter element. However, after all, the PP filter tube is a loose material, and its hardness and toughness are not strong enough, and If the temperature is high, the PP filter tube will also become soft, resulting in deformation of the entire filter element. Therefore, in order to strengthen the strength of the filter element, a support layer may be provided in the middle of the inner layer PP filter tube, which is tubular and located. Inside the inner layer PP filter tube. And coaxial with the inner layer PP filter tube. The support layer may also be a plastic support skeleton with a plurality of water holes.

The two-in-one paper fiber powder activated carbon carbon rod further includes one or more of antibacterial fiber, chemical fiber, KDF zinc powder, manganese sand, and silver-added antibacterial activated carbon powder.

The fixed protective layer is a nonwoven fabric.

The fixed protective layer is a PP filter tube.

The invention discloses a method for preparing a two-in-one paper fiber powder activated carbon filter, comprising: combining at least three coaxial tightly sleeved filter layers, and sealing the ends with end caps, wherein the inner layer is a tubular PP filter core, The middle layer is a 2-in-1 paper fiber powder activated carbon carbon rod, which is mainly composed of paper fiber, activated carbon powder, and one of activated carbon fiber, antibacterial fiber, manganese sand and silver-added antibacterial activated carbon powder. Several kinds of mixed water are made into pulp, molded, and the outer layer is a fixed protective layer. It can be made of non-proof cloth or tubular PP filter.

The molding step of the two-in-one paper fiber powder activated carbon carbon rod comprises: using paper fiber as a main raw material, adding activated carbon powder, and activated carbon fiber, antibacterial fiber, manganese sand and silver-added antibacterial activated carbon powder. One or more of them are mixed with water to form a paper pulp; a coaxial stainless steel mesh tubular mold is sleeved on the outer layer of the inner PP filter tube, and the raw material is injected into the stainless steel mesh tubular mold; the inner layer PP filter Pressure is applied to the tube body to form a gas wall to prevent the micropores in the inner PP filter tube from being plugged by the activated carbon powder; and then the above raw materials are dehydrated by a vacuum pump to obtain a molded two-in-one paper powder powder activated carbon. Baton. The paper fibers include one or more of natural fibers of hemp, cotton, bamboo, grass, and wood. The beneficial effects of the present invention are as follows: First, by using paper fiber as a main raw material, adding activated carbon powder, and one or more of activated carbon fiber, antibacterial fiber, manganese sand and silver-added antibacterial activated carbon powder, Molded into an intermediate layer of a two-in-one paper fiber powder activated carbon filter, which combines the advantages of paper fiber (the characteristics of bifurcation entanglement) and the adsorption capacity of activated carbon powder, with paper fiber and activated carbon powder as The main raw materials, at the same time, can also be added according to the needs of filtration, processing these raw materials into the form of hollow carbon rods, and overcome the shortcomings of the prior art in the form of roll paper-like winding, which is not durable.

Secondly, the inner layer adopts a PP filter tube as a support, and utilizes the porous structure of the PP filter tube to filter foreign matter and the powder activated carbon of the filter itself.

Third, the outer protective layer of the outer layer is also covered with a PP filter tube structure (or non-woven fabric:), and the intermediate layer of two-in-one paper fiber powder activated carbon carbon rod is wrapped, which can be used for coarse particle filtration. Features.

Fourth, since the inner layer PP filter tube not only has a filtering function, but also functions to support the entire filter element, however, after all, the PP filter tube is a loose material, and its hardness and toughness are not strong enough, and if When the temperature is high, the PP filter tube may also become soft, resulting in deformation of the entire filter element. Therefore, in order to strengthen the strength of the filter element, a support layer may be disposed in the middle of the inner layer PP filter tube, and the support layer may be A plastic support skeleton with multiple water holes.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing the structure of a 2-in-1 paper fiber powder activated carbon filter according to the present invention; FIG. 2 is a schematic view showing an embodiment of the present invention; FIG. 3 is a schematic view showing another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. As shown in Fig. 1, a two-in-one paper fiber powder activated carbon filter core comprises at least three coaxial tightly sleeved filter layers, which are in order from the inside to the outside: the inner layer is a PP filter element (2), which is tubular. The middle layer is a 2-in-1 paper fiber powder activated carbon carbon rod (3), which is tubular and sleeved on the outside of the PP filter; the outer layer is a fixed protective layer (4), which is coated on the two-in-one paper fiber powder. An outer cover of the carbon carbon rod; and an end cap (1) for sealing both ends of each filter layer of the two-in-one paper powder activated carbon filter.

The two-in-one paper fiber powder activated carbon carbon rod comprises activated carbon powder and paper fiber, and one or more of antibacterial fiber, manganese sand, and silver-added antibacterial activated carbon powder, which are molded by the above raw materials. to make.

As shown in Fig. 2, in the first embodiment, in use, since the inner layer PP filter tube not only has a filtering function, but also functions to support the entire filter element, the PP filter tube is a loose material after all. The hardness and toughness are not strong enough, and if the temperature is high, the PP filter tube will also become soft, resulting in deformation of the entire filter element. Therefore, in order to strengthen the strength of the filter element, it is also possible to use the inner PP filter tube. A plastic support frame (6) with a plurality of water holes is arranged in the middle. The fixed protective layer of the outer layer is a PP filter tube (4).

As shown in Fig. 3, in the second embodiment, the fixed protective layer is a nonwoven fabric (5), and the rest is the same as in the second embodiment. The invention discloses a method for preparing a two-in-one paper fiber powder activated carbon filter, comprising: combining at least three coaxial tightly sleeved filter layers, and sealing the ends with end caps, wherein the inner layer is a tubular PP filter core, The middle layer is a 2-in-1 paper fiber powder activated carbon carbon rod, which uses paper fiber as the main raw material, adding activated carbon powder, and activated carbon fiber, antibacterial fiber, chemical fiber, KDF zinc powder, manganese sand, and silver added antibacterial One or more of the activated carbon powders are prepared by adding water to form a paper pulp, and the outer layer is a fixed protective layer, which can be made of a non-woven fabric or a tubular PP filter tube. The molding step of the two-in-one paper fiber powder activated carbon carbon rod comprises: using paper fiber as a main raw material, adding activated carbon powder, and activated carbon fiber, antibacterial fiber, manganese sand and silver-added antibacterial activated carbon powder. One or more kinds of mixed water made of paper pulp; a coaxial stainless steel mesh tubular mold is sleeved on the outer layer of the inner PP filter tube, and the raw material is injected into the stainless steel mesh tubular mold; the inner layer PP filter tube Pressure is applied to the inside of the tube to form a gas wall to prevent the micropores on the inner PP filter tube from being plugged by the activated carbon powder; and then the above raw materials are dehydrated by a vacuum pump to obtain a molded two-in-one paper powder activated carbon carbon rod. .

The paper fibers include one or more of natural fibers of hemp, cotton, bamboo, grass, and wood.

Claims

Claim

A two-in-one paper fiber powder activated carbon filter, characterized in that it comprises at least three coaxial tightly packed filter layers,

The outer layer is a fixed protective layer covering the outer surface of the two-in-one paper powder activated carbon filter; and an end cap for sealing both ends of the filter elements of the two-in-one paper powder activated carbon filter.

The two-in-one paper fiber powder activated carbon filter according to claim 1, wherein the two-in-one paper fiber powder activated carbon carbon rod comprises activated carbon powder and paper fiber, and mixed water is used to make pulp. Molded.

The two-in-one paper powder activated carbon filter according to claim 1 or 2, wherein the filter element is further provided with a support layer which is tubular and located inside the inner PP filter tube. And coaxial with the inner layer PP filter tube.

The two-in-one paper fiber powder activated carbon composite filter cartridge according to claim 3, wherein the support layer is a plastic support skeleton having a plurality of water holes.

The two-in-one paper fiber powder activated carbon filter according to claim 2, wherein the two-in-one paper fiber powder activated carbon carbon rod further comprises chemical fiber, KDF zinc powder, antibacterial fiber, manganese sand, One or more of silver-added antibacterial activated carbon powders.

The two-in-one paper powder activated carbon filter according to claim 1 or 2, wherein the fixed protective layer is a nonwoven fabric.

The two-in-one paper powder activated carbon filter according to claim 1 or 2, wherein the fixed protective layer is a PP filter.

8. A method for preparing a two-in-one paper fiber powder activated carbon filter, characterized in that at least three coaxial tightly sleeved filter layers are combined, and both ends are sealed by end caps, wherein the inner layer is tubular PP filter, the middle layer is a 2-in-1 paper fiber powder activated carbon carbon rod, using paper fiber as the main raw material, adding activated carbon powder, and activated carbon fiber, antibacterial fiber, manganese sand and silver added antibacterial activated carbon powder. One or more of the mixed water is made into pulp, molded, and the outer layer is a fixed protective layer. It can be made of non-woven or tubular PP filter.

The method for preparing a two-in-one paper fiber powder activated carbon filter according to claim 8, wherein the step of molding the two-in-one paper fiber powder activated carbon carbon rod comprises: using paper fiber as a main material , adding activated carbon powder, and one or more of activated carbon fiber, antibacterial fiber, manganese sand and silver-added antibacterial activated carbon powder, mixed water to make pulp; outer sleeve of inner layer PP filter tube a coaxial stainless steel mesh tubular mold, injecting the pulp into the stainless steel mesh tubular mold; applying pressure to the inner tube of the inner PP filter tube to form a gas wall to prevent the micropores on the inner PP filter tube from being activated carbon powder Finally, the raw material is dehydrated by a vacuum pump, and dried to obtain a molded two-in-one paper fiber powder activated carbon carbon rod.

The method for preparing a two-in-one paper fiber powder activated carbon filter according to claim 8 or 9, wherein the paper fiber comprises one of natural fibers of hemp, cotton, bamboo, grass and wood or Several.