CN217746520U

CN217746520U - Microfiltration membrane with degerming separation function

Info

Publication number: CN217746520U
Application number: CN202221376232.3U
Authority: CN
Inventors: 李玖明; 李忠喜; 肖明辉
Original assignee: Hangzhou Shengju Environmental Protection Technology Co ltd
Current assignee: Hangzhou Shengju Environmental Protection Technology Co ltd
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2022-11-08
Anticipated expiration: 2032-06-01

Abstract

The utility model discloses a micro-filtration membrane with degerming and separating functions, which comprises a membrane body, wherein a plurality of groups of holes I and a plurality of groups of holes II are respectively distributed on two surfaces of the membrane body; the aperture of the first hole is smaller than that of the second hole, the first hole and the second hole are both open holes, and a separation structure is arranged inside the membrane body and used for separating bacteria on the surface of the membrane body. The aperture of the first hole and the second hole on the two sides of the membrane body are different, the membrane body structure inside the membrane body is three-dimensional honeycomb-shaped, compared with the membrane body which is the same and smaller in the aperture of the opening on the two conventional sides, the membrane body has larger space for accommodating pollutants, more bacteria can be accommodated, and simultaneously, because the aperture on one side is smaller, the aperture on the other side is larger, the membrane body which is larger in the aperture is compared with the larger membrane body in the larger space for accommodating pollutants, and the membrane body has higher mechanical strength.

Description

Microfiltration membrane with degerming separation function

Technical Field

The utility model relates to a microfiltration membrane's technical field especially relates to a microfiltration membrane with degerming separation work ability.

Background

The micro-filtration membrane is divided into an inorganic membrane and an organic polymer membrane according to membrane forming materials, the inorganic membrane is divided into a ceramic membrane and a metal membrane, and the organic polymer membrane is divided into a natural polymer membrane and a synthetic polymer membrane; according to the form of the membrane, the membrane is divided into a flat membrane, a tubular membrane, a roll-type membrane and a hollow fiber membrane; according to the principle of membrane production, the methods for producing polymeric membranes are classified into dissolution methods (dry-wet methods), stretching pore-forming methods, phase inversion methods, thermal phase methods, dip coating methods, irradiation methods, surface chemical modification methods, nuclear track methods, dynamic formation methods, and the like. The preparation method of the inorganic membrane mainly comprises a sol-gel method, a sintering method, a chemical precipitation method and the like. The filtering membrane is divided into four forms of a micro-filtering Membrane (MF), an ultra-filtering membrane (UF), a nano-filtering membrane (NF) and a reverse osmosis membrane (RO) according to the size of the pore diameter of the micro-pores, and the micro-filtering membrane generally refers to the filtering membrane with the filtering pore diameter of 0.03-10.0 microns.

The existing microfiltration membranes can also be divided into symmetrical membranes and asymmetrical membranes, the symmetrical membranes have high mechanical strength and high safety factor in certain specific environments, but in most use scenes, the asymmetrical membranes have high flow rate flux and long service life, but the existing asymmetrical filtration membranes have low dirt carrying capacity, low flow rate and unstable separation and removal capacity for bacteria or microorganisms.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a microfiltration membrane with a degerming and separating function.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a microfiltration membrane with a sterilization separation function comprises a membrane body, wherein a plurality of groups of first holes and a plurality of groups of second holes are respectively distributed on two surfaces of the membrane body;

the aperture of the first hole is smaller than that of the second hole, the first hole and the second hole are both open holes, and a separation structure is arranged inside the membrane body and used for separating bacteria on the surface of the membrane body.

As a further description of the above technical solution: the pore size range of the first pore and the second pore is 0.01-20.0 μm.

As a further description of the above technical solution: the separation structure is a three-dimensional honeycomb structure.

As a further description of the above technical solution: the separation structure comprises a first dense layer and a second dense layer, wherein the inner pore diameter of the first dense layer is smaller than that of the second dense layer.

As a further description of the above technical solution: the first dense layer accounts for 10% -40% of the thickness of the film body.

As a further description of the above technical solution: the pore diameter of one surface of the membrane body where the first pore is located is different in size.

As a further description of the above technical solution: the pore diameter of one surface of the membrane body where the second pore is located is different in size.

The utility model discloses following beneficial effect has:

1. the utility model discloses a hole one of membrane body two sides and the aperture of hole two are different, and the membrane body structure of membrane body inside is three-dimensional honeycomb, compares in the same and less membrane body in the trompil aperture of current conventional both sides, possess the space of bigger pollutant carrying capacity, can hold more bacteriums, simultaneously because one side aperture is less, the aperture of opposite side is great, possess great pollutant carrying space and compare in being the great membrane body in aperture, have higher mechanical strength.

Drawings

FIG. 1 is a front view of a micro-filtration membrane with a sterilization and separation function according to the present invention;

FIG. 2 is a rear view of a microfiltration membrane with a sterilization and separation function according to the present invention;

FIG. 3 is a cross-sectional view of a microfiltration membrane with a sterilization and separation function according to the present invention.

Illustration of the drawings:

1. a membrane body; 2. a first hole; 3. a second hole; 4. a separation structure; 401. a first dense layer; 402. a second dense layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides an embodiment: a microfiltration membrane with a sterilization separation function comprises a membrane body 1, wherein a plurality of groups of first holes 2 and a plurality of groups of second holes 3 are respectively distributed on two surfaces of the membrane body 1;

the aperture of the first hole 2 is smaller than that of the second hole 3, the first hole 2 and the second hole 3 are both open-type holes, and a separation structure 4 is arranged inside the membrane body 1 and used for separating bacteria on the surface of the membrane body 1.

According to the above technical scheme, when using this filter membrane, because the aperture of the hole 2 and the hole two 3 on membrane body 1 two sides is different, and membrane body structure 4 inside membrane body 1 is three-dimensional honeycomb, compare in the same and less membrane body of the trompil aperture of current conventional both sides, possess the space of bigger dirt capacity of receiving, can hold more bacteriums, simultaneously because one side aperture is less, the aperture of opposite side is great, possess great dirty space of receiving and compare in being the great membrane body in aperture, have higher mechanical strength.

The micro-filtration membrane is made of polysulfone PS, polyether sulfone PES, polyvinylidene fluoride PVDF, cellulose or the like.

Furthermore, the pore diameter of the first pore 2 and the second pore 3 is in the range of 0.01-20.0 μm, so that microorganisms such as flagellates and cryptosporidium can be filtered out.

Furthermore, the separation structure 4 is a three-dimensional honeycomb structure, so that the whole membrane body 1 has higher flux and flow velocity, and meanwhile, the mechanical strength of the three-dimensional honeycomb structure is higher, so that the strength of the whole filter membrane is also higher.

Further, the separation structure 4 includes a first dense layer 401 and a second dense layer 402, and the first dense layer 401 has an inner pore size smaller than that of the second dense layer 402, and has a stronger separation ability when bacteria and the like pass through.

Further, the first dense layer 401 accounts for 10% -40% of the thickness of the membrane body 1, and the second dense layer 402 with larger pore diameter accounts for 60% -90% of the thickness of the membrane body 1, so that the fouling capacity of the whole membrane body 1 is higher and the flux is larger.

Further, the pore diameters of the one surface of the membrane body 1 where the first hole 2 is located are different, and the pore diameters of the one surface of the membrane body 1 where the second hole 3 is located are different.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions on some technical features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. A microfiltration membrane with a degerming and separating function is characterized in that: the membrane comprises a membrane body (1), wherein a plurality of groups of first holes (2) and a plurality of groups of second holes (3) are respectively distributed on two surfaces of the membrane body (1);

the aperture of the first hole (2) is smaller than that of the second hole (3), the first hole (2) and the second hole (3) are both open holes, and a separation structure (4) is arranged inside the membrane body (1) and used for separating bacteria on the surface of the membrane body (1).

2. The microfiltration membrane with a sterilization and separation function according to claim 1, wherein: the pore diameter of the first pore (2) and the second pore (3) ranges from 0.01 μm to 20.0 μm.

3. The microfiltration membrane with a sterilization and separation function according to claim 1, wherein: the separation structure (4) is a three-dimensional honeycomb structure.

4. The microfiltration membrane with a sterilization and separation function according to claim 1, wherein: the separation structure (4) comprises a first dense layer (401) and a second dense layer (402), and the first dense layer (401) has an inner pore size smaller than that of the second dense layer (402).

5. The microfiltration membrane with a sterilization separation function according to claim 4, wherein: the first dense layer (401) accounts for 10% -40% of the thickness of the film body (1).

6. The microfiltration membrane with a sterilization separation function according to claim 1, wherein: the aperture of one surface of the membrane body (1) where the first hole (2) is located is different in size.

7. The microfiltration membrane with a sterilization and separation function according to claim 1, wherein: the pore diameter of one surface of the membrane body (1) where the second pore (3) is located is different in size.