Cross-flow micropore ceramic filtering membrane disc

Abstract

The utility model belongs to the technical field of ceramic filtering membrane discs, and particularly relates to a cross-flow micropore ceramic filtering membrane disc which comprises a micropore ceramic filtering membrane disc main body, a mounting hole is formed in the circle center position of the micropore ceramic filtering membrane disc main body, and the micropore ceramic filtering membrane disc main body comprises a supporting layer, a connecting layer and a separating membrane layer which are fixedly connected in sequence. The positioning convex ring is fixed on the circumferential surface of the supporting layer, the connecting layer and the separating membrane layer are positioned on the inner side of the positioning convex ring, and an arc-shaped surface is arranged on the circumferential surface of the positioning convex ring; according to the utility model, the positioning convex ring is arranged, the positioning convex ring and the supporting layer are connected into a whole, and the connecting layer and the separating membrane layer are positioned on the inner side of the positioning convex ring, so that the sealing performance and the stability of the connection of the supporting layer, the connecting layer and the separating membrane layer are greatly improved, and gaps or warped edges are not easy to generate at boundary parts; the micropore ceramic filtering membrane disc main body is always in a better filtering state, and the service life is long.

Description

Technical Field

[0001] The utility model belongs to the technical field of ceramic filter membrane discs, and in particular relates to a cross-flow microporous ceramic filter membrane disc. Background Art

[0002] The ceramic membrane separation process is a cross-flow filtration liquid separation process: the raw liquid flows at high speed in the membrane tube, and the clarified permeate containing small molecular components passes through the membrane in a direction perpendicular to it under pressure, and the turbid concentrated liquid containing large molecular components is retained by the membrane, so that the fluid can be separated, concentrated and purified. As a new type of membrane material, the ceramic membrane has the characteristics of good chemical stability, acid resistance, alkali resistance, organic solvent resistance, and high mechanical strength.

[0003] As is known to all, ceramic membrane is an asymmetric composite membrane made by sol-gel method, sintering method or other processes.

[0004] For example, in the prior art, a Chinese utility model patent with authorization announcement number CN220715442U discloses "a split ceramic membrane", which includes an upper support body, a lower support body, an upper separation membrane layer and a lower separation membrane layer which are separately arranged. The upper support body and the lower support body are integrally formed to form a support body, and the support body is disc-shaped. Grooves are provided on the upper and lower surfaces of the support body, and the grooves are connected to the central through hole of the support body. The upper and lower surfaces of the support body are respectively connected to the upper separation membrane layer and the lower separation membrane layer. The upper separation membrane layer and the lower separation membrane layer have the same shape and structure, and are assembled and used after being manufactured separately. They only need to be fired once during manufacturing, which reduces the firing process time and improves the manufacturing efficiency of disc-type ceramic membranes.

[0005] Although ceramic membranes in the prior art, including those mentioned above, have the characteristics of high manufacturing efficiency, the stability of the connection between the layers needs to be improved in actual use. After long-term use, due to the influence of fluid and impurities, gaps or warping are prone to occur at the boundaries of the ceramic membrane, affecting the filtering effect.

[0006] In order to solve the above problems, this application proposes a cross-flow microporous ceramic filtration membrane disk. Utility Model Content

[0007] In order to solve the above problems existing in the prior art, the utility model provides a cross-flow microporous ceramic filter membrane disk, which has the characteristics of easy use and high stability.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cross-flow microporous ceramic filter membrane disc, comprising a microporous ceramic filter membrane disc body, a mounting hole is provided at the center of the microporous ceramic filter membrane disc body, and the microporous ceramic filter membrane disc body comprises a supporting layer, a connecting layer and a separation membrane layer which are fixedly connected in sequence, and further comprises:

[0009] A positioning convex ring is fixed on the circumferential surface of the support layer, the connection layer and the separation membrane layer are located on the inner side of the positioning convex ring, and an arc surface is provided on the circumferential surface of the positioning convex ring.

[0010] As a preferred technical solution of the utility model, the cross section of the positioning convex ring is semicircular.

[0011] As a preferred technical solution of the utility model, the sum of the thicknesses of the support layer, the connection layer and the separation membrane layer is equal to the thickness of the positioning convex ring.

[0012] As a preferred technical solution of the utility model, first micropores are evenly distributed on the support layer, second micropores are evenly distributed on the connecting layer, and third micropores are evenly distributed on the separation membrane layer, and the pore sizes of the first micropores, the second micropores and the third micropores decrease successively.

[0013] As a preferred technical solution of the utility model, the pore size of the first micropores is 10μm-20μm, and the porosity is 30%-65%, the pore size of the second micropores is 1μm-10μm, and the porosity is 30%-40%, and the pore size of the third micropores is 0.8nm-1μm, and the porosity is 40%-55%.

[0014] As a preferred technical solution of the utility model, it also includes:

[0015] A first boss, wherein the first boss is a hollow structure, the first boss is fixed at a position on the connection layer corresponding to the second microhole, and the first boss is embedded in the first microhole;

[0016] The second boss is a hollow structure, the second boss is fixed at a position on the separation membrane layer corresponding to the third micropore, and the second boss is embedded in the second micropore.

[0017] As a preferred technical solution of the utility model, the diameters of the support layer, the connection layer and the separation membrane layer are equal.

[0018] As a preferred technical solution of the utility model, the top surface and the bottom surface of the connecting layer are provided with a plurality of grooves equally spaced along the circumferential direction, and the grooves are arc-shaped grooves, one end of the grooves is connected to the mounting hole, and the other end is a closed end.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] In the utility model, the positioning convex ring is connected to the support layer as a whole through the setting of the positioning convex ring, and the connecting layer and the separation membrane layer are located on the inner side of the positioning convex ring, which greatly improves the sealing and stability of the connection between the support layer, the connecting layer and the separation membrane layer. It is not easy to produce gaps or warping edges at the boundary parts, ensuring that the main body of the microporous ceramic filter membrane disc is always in an optimal filtering state and has a long service life.

[0021] Other additional advantages and beneficial effects of the present application will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 For this utility model Figure 1 A is an enlarged structural diagram;

[0025] Figure 3 This is a schematic diagram of the axonometric structure of the connection layer in the utility model;

[0026] Figure 4 It is a partial enlarged structural schematic diagram of the main body of the microporous ceramic filter membrane disk in the utility model.

[0027] In the figure: 1. Microporous ceramic filter membrane disc body; 101. Mounting hole; 11. Support layer; 111. Positioning convex ring; 112. Arc surface; 113. First micropore; 12. Connecting layer; 121. Groove; 122. Second micropore; 123. First boss; 13. Separation membrane layer; 131. Third micropore; 132. Second boss. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-Figure 4The utility model provides the following technical solutions: a cross-flow microporous ceramic filter membrane disc, comprising a microporous ceramic filter membrane disc body 1, with a mounting hole 101 at the center position of the microporous ceramic filter membrane disc body 1, and the microporous ceramic filter membrane disc body 1 comprises a supporting layer 11, a connecting layer 12 and a separation membrane layer 13 fixedly connected in sequence, and also includes: a positioning convex ring 111.

[0030] Further, by Figure 1 and Figure 2 As shown, in this embodiment, the positioning convex ring 111 is fixed on the circumferential surface of the support layer 11, the connecting layer 12 and the separation membrane layer 13 are located on the inner side of the positioning convex ring 111, and an arc surface 112 is provided on the circumferential surface of the positioning convex ring 111. After adopting the above scheme, when in use, after the support layer 11, the connecting layer 12 and the separation membrane layer 13 are connected as one, the connecting layer 12 and the separation membrane layer 13 are located on the inner side of the positioning convex ring 111, which greatly improves the sealing and stability of the connection between the support layer 11, the connecting layer 12 and the separation membrane layer 13, and it is not easy to produce gaps or warping at the boundary, thereby ensuring that the microporous ceramic filter membrane disc body 1 is always in a better filtering state and has a long service life.

[0031] It should be noted that the positioning protruding ring 111 is preferably an integrated structure with the supporting layer 11, which has higher structural strength.

[0032] Preferably, by Figure 1 and Figure 2 As shown, in this embodiment, the cross section of the positioning protruding ring 111 is semicircular. Through the above design, the positioning protruding ring 111 is less impacted by the medium, so the stability and safety are higher.

[0033] Preferably, by Figure 1 and Figure 2 As shown, in this embodiment, the sum of the thicknesses of the support layer 11, the connecting layer 12 and the separation membrane layer 13 is equal to the thickness of the positioning convex ring 111. After the above design, after the support layer 11, the connecting layer 12 and the separation membrane layer 13 are connected as one, the connecting layer 12 and the separation membrane layer 13 are located on the inner side of the positioning convex ring 111, and the bottom surface of the separation membrane layer 13 is flush with the bottom surface of the positioning convex ring 111.

[0034] It should be noted that the above scheme is only a preferred implementation scheme of the present invention and is not used to limit the present invention. In actual use, the thickness of the positioning convex ring 111 may also be greater than the sum of the thicknesses of the support layer 11, the connecting layer 12 and the separation membrane layer 13. In principle, in order to ensure sealing and stability, the thickness of the positioning convex ring 111 should not be less than the sum of the thicknesses of the support layer 11, the connecting layer 12 and the separation membrane layer 13.

[0035] Preferably, by Figure 1 and Figure 4As shown, in this embodiment, the first micropores 113 are evenly distributed on the support layer 11, the second micropores 122 are evenly distributed on the connecting layer 12, and the third micropores 131 are evenly distributed on the separation membrane layer 13, and the apertures of the first micropores 113, the second micropores 122 and the third micropores 131 decrease in sequence. When the medium passes through the microporous ceramic filter membrane disc body 1, it will pass through the first micropores 113, the second micropores 122 and the third micropores 131 in sequence, and the apertures of the first micropores 113, the second micropores 122 and the third micropores 131 decrease in sequence, forming an asymmetric design, thereby realizing the filtration of the medium by means of "cross-flow filtration".

[0036] It should be noted that the appendix of the present utility model Figure 4 It is only an exemplary display of the microstructure of the microporous ceramic filter membrane disk body 1 and is not used to limit the present invention, because the first micropores 113, the second micropores 122 and the third micropores 131 are all very small, and after the support layer 11, the connecting layer 12 and the separation membrane layer 13 are combined, the first micropores 113, the second micropores 122 and the third micropores 131 do not necessarily completely overlap, and they may also be misaligned with each other.

[0037] Optionally, by Figure 1 and Figure 4 As shown, in this embodiment, the pore size of the first micropore 113 is 10μm-20μm, and the porosity is 30%-65%, the pore size of the second micropore 122 is 1μm-10μm, and the porosity is 30%-40%, and the pore size of the third micropore 131 is 0.8nm-1μm, and the porosity is 40%-55%. It can be seen that the pore sizes of the first micropore 113, the second micropore 122 and the third micropore 131 decrease successively to achieve "cross-flow filtration", and although the porosities of the first micropore 113, the second micropore 122 and the third micropore 131 are different, the difference is not large.

[0038] Preferably, by Figure 1 and Figure 4 As shown, in this embodiment, it also includes: a first boss 123 and a second boss 132, the first boss 123 is a hollow structure, the first boss 123 is fixed at a position corresponding to the second micropore 122 on the connecting layer 12, and the first boss 123 is embedded in the first micropore 113, the second boss 132 is a hollow structure, the second boss 132 is fixed at a position corresponding to the third micropore 131 on the separation membrane layer 13, and the second boss 132 is embedded in the second micropore 122. After adopting the above scheme, when in use, after the support layer 11, the connecting layer 12 and the separation membrane layer 13 are connected as one, the first boss 123 is embedded in the first micropore 113, and the second boss 132 is embedded in the second micropore 122, which further improves the stability of the connection between the support layer 11, the connecting layer 12 and the separation membrane layer 13.

[0039] It should be noted that, in actual use, it is not necessary to fix the first boss 123 at all the second microholes 122, and therefore it is not necessary to fix the second boss 132 at all the third microholes 131. It is sufficient to select some positions to fix the first boss 123 and the second boss 132. It is also worth noting that in order to ensure stability, the selected positions should not be too close.

[0040] Preferably, by Figure 1 As shown, in this embodiment, the diameters of the support layer 11, the connecting layer 12 and the separation membrane layer 13 are equal. After the support layer 11, the connecting layer 12 and the separation membrane layer 13 are connected as one, the circumferential surfaces of the three are flush, which can reduce medium resistance and medium impact, and can ensure that the circumferential surfaces of the connecting layer 12 and the separation membrane layer 13 are tightly fitted to the inner wall of the positioning convex ring 111, thereby ensuring stability and sealing.

[0041] Preferably, by Figure 1 and Figure 3 As shown, in this embodiment, the top and bottom surfaces of the connecting layer 12 are provided with a plurality of grooves 121 equally spaced along the circumferential direction, and the grooves 121 are arc-shaped grooves, one end of the grooves 121 is connected to the mounting hole 101, and the other end is a closed end. Through the arrangement of the grooves 121, when the microporous ceramic filter membrane disc body 1 is in a rotating working state, the medium will form turbulence in the grooves 121, thereby increasing the flow rate of the medium and achieving high filtration efficiency. In addition, the medium with a high flow rate can also flush the surface of the microporous ceramic filter membrane disc body 1 and flush away impurities adhered to the microporous ceramic filter membrane disc body 1.

[0042] Components not described in detail herein are prior art.

[0043] Working principle and use process of the utility model: When the microporous ceramic filter membrane disc body 1 of the utility model is used, after the support layer 11, the connecting layer 12 and the separation membrane layer 13 are connected as one, the connecting layer 12 and the separation membrane layer 13 are located on the inner side of the positioning convex ring 111, which greatly improves the sealing and stability of the connection between the support layer 11, the connecting layer 12 and the separation membrane layer 13, and it is not easy to generate gaps or warping edges at the boundary parts, so as to ensure that the microporous ceramic filter membrane disc body 1 is always in a better filtering state and has a long service life;

[0044] In addition, after the support layer 11, the connection layer 12 and the separation membrane layer 13 are connected as one, the first boss 123 is embedded in the first micropore 113, and the second boss 132 is embedded in the second micropore 122, which further improves the stability of the connection between the support layer 11, the connection layer 12 and the separation membrane layer 13;

[0045] When the medium passes through the microporous ceramic filter membrane disc body 1, it will pass through the first micropore 113, the second micropore 122 and the third micropore 131 in sequence, and the apertures of the first micropore 113, the second micropore 122 and the third micropore 131 decrease in sequence, forming an asymmetric design, thereby realizing the filtration of the medium by "cross-flow filtration".

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A cross-flow microporous ceramic filter membrane disc, comprising a microporous ceramic filter membrane disc body (1), wherein a mounting hole (101) is provided at the center of the microporous ceramic filter membrane disc body (1), and the microporous ceramic filter membrane disc body (1) comprises a supporting layer (11), a connecting layer (12) and a separation membrane layer (13) which are fixedly connected in sequence, characterized in that: Also includes: A positioning convex ring (111), wherein the positioning convex ring (111) is fixed on the circumferential surface of the support layer (11), the connection layer (12) and the separation membrane layer (13) are located on the inner side of the positioning convex ring (111), and an arc surface (112) is provided on the circumferential surface of the positioning convex ring (111).

2. The cross-flow microporous ceramic filtration membrane disk according to claim 1, characterized in that: The cross section of the positioning protruding ring (111) is semicircular.

3. The cross-flow microporous ceramic filtration membrane disk according to claim 1, characterized in that: The sum of the thicknesses of the support layer (11), the connection layer (12) and the separation membrane layer (13) is equal to the thickness of the positioning convex ring (111).

4. The cross-flow microporous ceramic filtration membrane disk according to claim 1, characterized in that: The support layer (11) is uniformly provided with first micropores (113), the connection layer (12) is uniformly provided with second micropores (122), and the separation membrane layer (13) is uniformly provided with third micropores (131), and the pore sizes of the first micropores (113), the second micropores (122) and the third micropores (131) decrease in sequence.

5. The cross-flow microporous ceramic filtration membrane disk according to claim 4, characterized in that: The pore size of the first micropore (113) is 10 μm-20 μm, and the porosity is 30%-65%. The pore size of the second micropore (122) is 1 μm-10 μm, and the porosity is 30%-40%. The pore size of the third micropore (131) is 0.8 nm-1 μm, and the porosity is 40%-55%.

6. The cross-flow microporous ceramic filtration membrane disk according to claim 4, characterized in that: Also includes: A first boss (123), wherein the first boss (123) is a hollow structure, the first boss (123) is fixed to a position on the connection layer (12) corresponding to the second microhole (122), and the first boss (123) is embedded in the first microhole (113); The second boss (132) is a hollow structure, the second boss (132) is fixed to a position on the separation membrane layer (13) corresponding to the third micropore (131), and the second boss (132) is embedded in the second micropore (122).

7. The cross-flow microporous ceramic filtration membrane disk according to claim 1, characterized in that: The diameters of the support layer (11), the connection layer (12) and the separation membrane layer (13) are equal.

8. The cross-flow microporous ceramic filtration membrane disk according to claim 1, characterized in that: The top surface and the bottom surface of the connection layer (12) are both provided with a plurality of grooves (121) distributed at equal intervals along the circumferential direction, and the grooves (121) are arc-shaped grooves, one end of the grooves (121) is connected to the mounting hole (101), and the other end is a closed end.

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