Ceramic flat sheet membrane

Abstract

A ceramic flat sheet membrane comprises a front membrane layer, a supporting layer and a rear membrane layer, the supporting layer comprises supporting parts and supporting layer filler, multiple layers of supporting parts are arranged in the supporting layer filler at intervals, the front membrane layer is arranged on the front surface of the supporting layer, and the rear membrane layer is arranged on the rear surface of the supporting layer. The supporting part of the supporting layer is formed by filling particles, so that the damage to the ceramic flat sheet membrane can be reduced when the ceramic membrane is collided or vibrated, the service life of the flat sheet membrane is prolonged, the filling material of the supporting layer effectively intercepts and decomposes low-molecular substances, and the contact surfaces between the front membrane layer and the supporting layer and between the supporting layer and the rear membrane layer are arc-shaped tooth-shaped surfaces, so that the service life of the flat sheet membrane is prolonged. Cleaning dead angles are avoided, and residues of acid-base substances are effectively reduced, so that the corrosion effect is delayed, and the service life of the flat sheet membrane is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of water treatment equipment, and in particular to a ceramic flat sheet membrane. Background Technology

[0002] Membranes are materials with selective separation capabilities. The process of separating, purifying, and concentrating different components of a liquid using the selective separation capabilities of membranes is called membrane separation. It differs from traditional filtration in that membranes can separate at the molecular level, and this process is a physical process that does not require phase changes or the addition of additives. Based on the material, membranes can be divided into inorganic and organic membranes. Common organic membranes, such as hollow fiber membranes, have short lifespans and poor fouling resistance, while inorganic membranes, such as ceramic flat sheet membranes, are generally microfiltration membranes, but they offer high separation efficiency, good chemical stability, high mechanical strength, good regeneration performance, and a simple separation process. Current ceramic flat sheet membranes can retain high-molecular-weight particles, but low-molecular-weight substances can still pass through. Furthermore, ceramic flat sheet membranes have poor ductility and are prone to cracking under high temperature, high pressure, or strong acid and alkali corrosion. Summary of the Invention

[0003] This invention aims to address the shortcomings of existing technologies by providing a ceramic flat sheet membrane that can effectively trap large molecular particles and decompose low molecular weight substances, while also exhibiting good ductility and a long service life.

[0004] To achieve the above objectives, this utility model adopts the following technical solution:

[0005] A ceramic flat sheet membrane includes a front membrane layer, a support layer, and a rear membrane layer. The support layer includes support components and support layer filler. Multiple support components are spaced apart within the support layer filler. The front membrane layer is disposed on the front surface of the support layer, and the rear membrane layer is disposed on the rear surface of the support layer.

[0006] The contact surface between the front surface of the support layer and the rear surface of the front film layer is an arc-shaped toothed surface.

[0007] The contact surface between the rear surface of the support layer and the front surface of the rear film layer is an arc-shaped toothed surface.

[0008] The supporting component is filled with particles formed by high-temperature sintering of alumina, and the minimum diameter of the particles is smaller than the pores between the filler material in the supporting layer.

[0009] The support layer filler is a nano-catalyst, including one or both of silicon dioxide and titanium dioxide.

[0010] Both the front and rear film layers are fine powders with a particle size of less than 1 micrometer, and the particle size of the rear film layer is smaller than that of the front film layer.

[0011] The pore size of the support layer filler is larger than that of the front and rear membrane layers, and the support layer filler traps and decomposes low molecular weight substances with a diameter larger than that of the untreated front membrane layer.

[0012] The beneficial effects of this utility model are as follows: The support component of the support layer of this utility model is filled with particles, which can reduce the damage to the ceramic flat sheet membrane when the ceramic membrane is subjected to collision or vibration, and improve the life of the flat sheet membrane. The filler of the support layer effectively traps and decomposes low molecular weight substances. The contact surfaces between the front membrane layer and the support layer and between the support layer and the rear membrane layer are arc-shaped toothed surfaces, which avoid cleaning dead corners, effectively reduce the residue of acid and alkaline substances, thereby delaying corrosion and extending the service life of the flat sheet membrane. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the interlayer arc-shaped toothed surface of this utility model;

[0015] In the figure: 1-front film layer; 2-support layer; 21-support component; 22-support layer filler; 3-rear film layer;

[0016] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] A ceramic flat sheet membrane includes a front film layer 1, a support layer 2, and a rear film layer 3. The support layer 2 includes a support member 21 and a support layer filler 22. Multiple support members 21 are spaced apart in the support layer filler 22. The front film layer 1 is disposed on the front surface of the support layer 2, and the rear film layer 3 is disposed on the rear surface of the support layer 2.

[0019] The contact surface between the front surface of the support layer 2 and the rear surface of the front film layer 1 is an arc-shaped toothed surface.

[0020] The contact surface between the rear surface of the support layer 2 and the front surface of the rear film layer 3 is an arc-shaped toothed surface.

[0021] The support component 21 is filled with particles formed by high-temperature sintering of alumina, and the minimum diameter of the particles is larger than the pores between the support layer filler 22.

[0022] The support layer filler 22 is a nano-catalyst, including one or both of silicon dioxide and titanium dioxide.

[0023] Both the front film layer 1 and the rear film layer 3 are fine powders with a particle size of less than 1 micrometer, and the particle size of the rear film layer 3 is smaller than that of the front film layer 1.

[0024] The pore size of the support layer filler 22 is larger than that of the front film layer 1 and the rear film layer 3. The support layer filler 22 retains and decomposes low molecular weight substances with a diameter larger than that of the untreated front film layer 1.

[0025] In operation, wastewater enters the ceramic flat sheet membrane from the outside. First, it passes through the front membrane layer 1, where large molecules are trapped. Then, it enters the support layer 2. Because the front membrane layer 1 is composed of fine powder smaller than 1 micrometer, substances smaller than 1 micrometer are trapped and processed there. The remaining low-molecular-weight substances, excluding the trapped large molecules, are trapped and decomposed by the support layer filler 22 in the support layer 2. The support component 21 in the support layer 2 is filled with granules formed by high-temperature sintering of alumina. The granules help reduce damage to the ceramic flat sheet membrane when subjected to impacts or vibrations. The trapped and decomposed low-molecular-weight substances then enter the rear membrane layer 3, where they are degraded into even smaller molecules and trapped for further processing. The contact surface between the front membrane layer 1 and the support layer 2 is an arc-shaped toothed surface, which improves compressive strength while avoiding cleaning dead zones and reducing the residue of acidic and alkaline substances. Only after being treated by the front membrane layer 1, support layer 2, and rear membrane layer 3 can the fluid pass through the ceramic flat sheet membrane and enter the water collection pipe.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A ceramic flat sheet membrane, characterized by, It comprises a front film layer (1), a support layer (2) and a back film layer (3), the support layer (2) comprises support components (21) and support layer filler (22), the support layer filler (22) is provided with multiple layers of support components (21) at intervals, the front surface of the support layer (2) is provided with the front film layer (1), and the back surface of the support layer (2) is provided with the back film layer (3).

2. The ceramic flat sheet membrane according to claim 1, wherein, The front surface of the support layer (2) and the back surface of the front film layer (1) are in contact with each other and are a tooth-shaped surface.

3. The ceramic flat sheet membrane according to claim 2, wherein, The back surface of the support layer (2) and the front surface of the back film layer (3) are in contact with each other and are a tooth-shaped surface.

4. The ceramic flat sheet membrane according to claim 3, wherein, The support components (21) are filled with particles of different diameters sintered by alumina at high temperature, and the minimum diameter of the particles is greater than the pore size between the support layer filler (22).

5. A ceramic flat sheet membrane according to claim 4, wherein The front film layer (1) and the back film layer (3) are both fine powders with a particle size of less than 1 micron, and the particle size of the back film layer (3) is smaller than that of the front film layer (1).

6. A ceramic flat sheet membrane according to claim 5, wherein, The pore size of the support layer filler (22) is greater than that of the front film layer (1) and the back film layer (3), and the support layer filler (22) traps low molecular substances with a diameter greater than that of the untreated front film layer (1).

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