CN216856321U

CN216856321U - Filter membrane structure

Info

Publication number: CN216856321U
Application number: CN202121362715.3U
Authority: CN
Inventors: 黄彦; 任杰
Original assignee: Gaoq Functional Materials Co ltd
Current assignee: Gaoq Functional Materials Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-07-01
Anticipated expiration: 2031-06-18

Abstract

The utility model relates to a filter membrane structure, which comprises a support body, a transition layer and a membrane layer from inside to outside, wherein the support body is composed of perforated plates and is used as a bearing matrix of a filter membrane; the transition layer is a middle layer of the membrane layer and the support body, is formed by a metal wire mesh and is used as the support body of the filter membrane layer; the membrane layer is prepared by sintering specific powder and is a main carrier of the separation precision of the filter membrane. The structure ensures that the filter membrane has higher separation precision and higher separation flux; and higher filter membrane intensity and less separation resistance make it can carry out the blowback in operation process, and the cleanability of filter membrane has also obtained certain promotion, and the practicality of final filter membrane obtains very big promotion.

Description

Filter membrane structure

Technical Field

The utility model relates to the technical field of vacuum drying devices, in particular to a filter membrane structure.

Background

Filtration refers to a technique for retaining suspended matter in a mixed system by using a porous medium, which is called a filter material, to finally achieve separation of the suspended matter. The filtering material is a core element of the filtering and separating technology, and generally requires the characteristics of stable physicochemical property, durability, repeated use and the like. The separation efficiency of the filter material depends mainly on the pore size sieving effect of the medium, and the smaller the pore size, the higher the filtration precision, but the higher the permeation resistance. In order to solve the contradiction between the filtration precision and the permeation resistance in the industry at present, a macroporous material can be selected as a matrix, a thin microporous material layer is deposited on the surface of the matrix to form a gradient structure, and the filter material is called a membrane material. Compared with the prior various filter materials, the membrane material is not easy to block and has better regeneration performance. During backwashing or back blowing, fluid flows from the macroporous base material to the membrane layer, and pollutants on the surface of the membrane and in the pore channels are easier to remove.

The situation that the separation precision and the permeation resistance of the membrane material conflict with each other still occurs in the application process of the membrane material, and the strength problem of the membrane material always troubles related technicians. For example: patent 20192157003.2 discloses a multi-gradient porous structure ceramic ultrafiltration membrane structure, which improves the filtration effect and product strength of the existing membrane material; chinese patent 201310130644.8 also discloses a matrix material and a preparation process thereof, aiming at improving the separation efficiency and practicability of the membrane; the filter material manufacturing method disclosed in the Chinese patent 202011424806.5 improves the strength and the filtering performance of the membrane layer. Technical challenges in the industry have focused on improving the properties and strength of the membrane material.

To the promotion of membrane material performance, what this patent discloses is a synthesize filter membrane structure of multiple membrane material characteristic, promotes many-sidedly to the membrane material performance.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to improve the separation performance of the membrane material and the strength of the membrane. Therefore, a filter membrane structure is provided, which improves the separation precision and the strength of the filter membrane with the structure, has smaller membrane permeation resistance, and can carry out back flushing in the cleaning operation.

In order to achieve the purpose, the utility model provides the following technical scheme:

a filter membrane structure comprises a support body, a transition layer and a membrane layer from inside to outside, wherein the support body is composed of metal perforated plates and is used as a bearing matrix of the filter membrane; the transition layer is a middle layer of the membrane layer and the support body and is used as a carrier in the process of depositing the membrane layer powder of the filter membrane; the membrane layer is prepared by sintering powder and is a main carrier of the separation precision of the filter membrane.

Furthermore, the transition layer is formed by stacking one or more layers of metal wire meshes with different void densities.

Furthermore, the thickness of the film layer is relatively thin.

Furthermore, the support body can be a metal hole plate or a hole pipe.

Drawings

The attached drawings are for more clearly explaining the technical solution of the present invention, and any changes equivalent to the attached drawings are within the protection scope for a person of ordinary skill in the art without creative efforts.

FIG. 1 is a schematic cross-sectional view of the filter membrane structure. Wherein: (1) a support body; (2) a transition layer; (3) and (5) film layer.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In this embodiment, referring to the attached drawings, the novel filter membrane structure of this embodiment includes a support (1), a transition layer (2), and a membrane layer (3).

In one embodiment, the support body (1) is a metal eyelet plate.

In one embodiment, the transition layer (2) is one or more layers of wire mesh.

In one embodiment, the film (3) is sintered from powder.

The above-mentioned embodiments are only examples of the present invention, and are not intended to limit the scope of the utility model, which is defined by the claims and the equivalents of the principles and basic structures of the utility model.

Claims

1. A filter membrane structure is characterized by comprising a support body (1), a transition layer (2) and a membrane layer (3) from inside to outside, wherein the support body (1) is composed of an eyelet metal plate and is used as a bearing matrix of a filter membrane; the transition layer (2) is a middle layer of the membrane layer and the support body, is formed by a metal wire mesh and is used as the support body of the filter membrane layer; the membrane layer (3) is prepared by sintering powder and is a main carrier of the separation precision of the filter membrane.

2. A filter membrane structure according to claim 1, characterised in that said transition layer (2) is formed by one or more layers of wire mesh.