Honeycomb type ceramic separation membrane assembly

Abstract

The utility model relates to the technical field of membrane separation technology and separation membrane products, in particular to a honeycomb type ceramic separation membrane component, which comprises a ceramic separation membrane element, a membrane shell, a plug ring and a sealing ring, the combined discs are respectively positioned at two end parts of the cylindrical honeycomb ceramic separation membrane assembly and are parallel to each other, and the circle centers of the combined discs are positioned on the same axis; the ceramic separation membrane element is fixed in the membrane shell through the plug ring, one side of the plug ring is sleeved on the combined disc, and the other side of the plug ring is clamped and embedded in the membrane shell. According to the utility model, a plurality of ceramic separation membrane sheets are combined together by using the combined discs with accurate relative positions, so that the honeycomb type ceramic separation membrane element with accurate and consistent boundary dimension is obtained, and the design size of a membrane shell does not need to leave a large margin; the enough distance between the ceramic separation membrane and the membrane shell cylinder is ensured to reduce the liquid flowing resistance, and the boundary dimension of the ceramic separation membrane assembly is not excessively increased; and the adopted plug ring structure does not need a thick and large combined disc and a large-diameter membrane shell, so that the diameter and the length of the assembly are obviously reduced, and the assembly has higher separation membrane filling density.

Description

Technical Field

[0001] The utility model relates to the technical fields of membrane separation technology and separation membrane products, in particular to a honeycomb ceramic separation membrane module. Background Art

[0002] A separation membrane is a material with selective separation function. It can allow one or more substances in liquid or gas materials to pass through, while intercepting other substances, so as to realize the separation and purification of materials. Compared with conventional separation methods, membrane separation technology has the advantages of high separation efficiency, low energy consumption, high yield, simple process and equipment, and automatic operation. In the 20th century, separation membrane materials and membrane separation technology developed rapidly, and membrane separation technology was widely used. At present, various membrane separation technologies have been widely used in the fields of food, bioengineering, environmental protection, chemical industry, electronics, metallurgy, etc.

[0003] After decades of development, a wide variety of separation membrane products have emerged. According to the materials used for the separation membrane, the separation membrane can be divided into organic membranes, ceramic membranes, metal membranes, etc. In recent years, organic and inorganic composite separation membranes or hybrid membranes have also emerged, so as to obtain special membrane properties. According to the shape of the separation membrane, the separation membrane can be divided into several types such as tubular, hollow fiber, flat plate, honeycomb, etc. The selection of the separation membrane should comprehensively consider factors such as technology and cost.

[0004] Compared with organic separation membranes, the types of materials for ceramic separation membranes are relatively few, mainly alumina, silicon carbide, zirconia and titanium oxide. Although ceramic separation membranes have the advantages of high mechanical strength, good shape stability, excellent corrosion resistance, strong anti-pollution ability, excellent cleaning and recovery performance, and long service life, they also have problems such as complex production process, high product price and low packing density. Therefore, improving the packing density of ceramic separation membranes is an important content in the development of ceramic separation membrane technology.

[0005] The honeycomb ceramic separation membrane is a form of ceramic separation membrane developed to improve the packing density. The outer diameter of the honeycomb ceramic separation membrane is generally greater than 100 mm, and the pore diameter therein is less than 3 mm. Therefore, the packing density ratio (the ratio of the effective membrane area of the membrane element to the volume of the membrane element) provided by the honeycomb ceramic separation membrane is between that of the hollow fiber membrane and the tubular membrane.

[0006] The honeycomb ceramic separation membrane can be a single ceramic membrane tube or composed of multiple ceramic membrane sheets. The production process of a single membrane tube product requires strict control. Otherwise, a tiny defect in the membrane tube may cause the entire membrane tube to become a waste product, and the reduction of the finished product rate will lead to a substantial increase in production cost. The product composed of multiple membrane sheets is easy to improve the finished product rate, but the membrane element combination and packaging process are relatively cumbersome. The prominent problem is that there are different deviations in the outer dimensions of each membrane sheet, resulting in unsatisfactory results using conventional sealing and assembly methods. Summary of the Utility Model

[0007] The purpose of the present utility model is to provide a honeycomb ceramic separation membrane module to solve the encapsulation problem of assembling multiple membrane sheets into a honeycomb ceramic separation membrane.

[0008] To achieve the above purpose, the present utility model provides the following technical solution: A honeycomb ceramic separation membrane module includes a ceramic separation membrane element, a membrane shell, a plug ring, and a sealing ring.

[0009] The ceramic separation membrane element is a cylindrical honeycomb ceramic separation membrane assembly composed of 2 to 10 ceramic separation membrane sheets and two combination discs. The combination discs are respectively located at both ends of the cylindrical honeycomb ceramic separation membrane assembly, and the combination discs are parallel to each other, and the centers are on the same axis.

[0010] The ceramic separation membrane element is fixed inside the membrane shell through the plug ring. One side of the plug ring is sleeved on the combination disc, and the other side is clamped in the membrane shell. The sealing rings are respectively arranged between the plug ring and the membrane shell, and between the plug ring and the ceramic separation membrane element.

[0011] The plug ring and the sealing ring divide the internal space of the membrane shell into two relatively independent parts, namely a raw liquid cavity and a filtrate cavity. The connection channel between the raw liquid cavity and the filtrate cavity is only the functional micropores of the ceramic separation membrane sheets.

[0012] Preferably, the membrane shell includes a membrane shell cylinder body and membrane shell heads arranged at both ends of the membrane shell cylinder body. The membrane shell cylinder body and the membrane shell heads are respectively provided with a cylinder flange and a head flange, and the cylinder flange and the head flange are connected by screws or flexible connectors.

[0013] Preferably, the two membrane shell heads are respectively provided with an inlet and an outlet for the raw liquid, and the membrane shell cylinder body is provided with an outlet for the filtrate and an inlet for the backwashing liquid.

[0014] Preferably, the plug ring is a cylinder with a step, including a plug ring cylinder and a plug ring step. The outer diameter of the plug ring cylinder is smaller than the inner diameter of the membrane shell cylinder body, and the inner diameter of the plug ring cylinder is larger than the outer diameter of the combination disc; the diameter of the plug ring step is smaller than the diameters of the cylinder flange and the head flange, and larger than the outer diameter of the membrane shell cylinder body.

[0015] Preferably, the cylinder flange is provided with two flange grooves, the outer side of the combination plate is provided with 1 to 2 combination plate grooves, the sealing ring includes a first O-ring, a second O-ring and a third O-ring. The first O-ring and the second O-ring are respectively located in the two flange grooves, and the third O-ring is located in the combination plate groove; the membrane shell cylinder and the membrane shell head are sealed by the first O-ring 501, the plug ring and the membrane shell cylinder are sealed by the second O-ring, and the plug ring and the combination plate are sealed by the third O-ring.

[0016] Preferably, the sealing ring is a standard O-ring made of rubber material, such as ethylene propylene diene monomer rubber, silicone rubber or fluororubber, to prevent the raw liquid cavity and the filtrate cavity from flowing or leaking.

[0017] Preferably, the combination plate is provided with intervals and hollowings according to the shape and size of the ceramic separation membrane sheets. The ceramic separation membrane sheets are arranged neatly, inserted into the hollowings in sequence and separated by the intervals to form the cylindrical honeycomb ceramic separation membrane assembly.

[0018] Preferably, the number of the ceramic separation membrane sheets is 6 to 8.

[0019] Preferably, the combination plate and the ceramic separation membrane sheets are fixed by an adhesive, and the adhesive is an epoxy resin or polyurethane with water resistance and chemical corrosion resistance properties.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] 1) The present utility model combines multiple ceramic separation membrane sheets with a combination plate, and obtains a honeycomb ceramic separation membrane element with precisely the same external dimensions by accurately controlling the relative positions of the combination plates at both ends.

[0022] 2) The present utility model adopts a honeycomb ceramic separation membrane element with precisely the same external dimensions, so that the design dimensions of the membrane shell do not need to leave a large margin. It can not only ensure that there is enough distance between the ceramic separation membrane sheets and the membrane shell cylinder to reduce the resistance of liquid flow, but also will not overly increase the external dimensions of the ceramic separation membrane assembly.

[0023] 3) Compared with the assembly and sealing structures of similar products at home and abroad, the plug ring structure adopted by the present utility model does not require a thick and large combination plate and a large-diameter membrane shell. The diameter and length of the ceramic separation membrane assembly are significantly reduced, and it has a higher separation membrane packing density. Description of the Drawings

[0024] Figure 1It is a reference schematic diagram of a multi-piece combined honeycomb ceramic separation membrane;

[0025] Figure 2 It is a reference schematic diagram of a honeycomb ceramic separation membrane element in the present utility model;

[0026] Figure 3 It is a structural schematic diagram of a combined disc in an embodiment of the present utility model;

[0027] Figure 4 It is an external appearance schematic diagram of a honeycomb ceramic separation membrane module;

[0028] Figure 5 It is Figure 4 a cross-sectional schematic diagram of;

[0029] Figure 6 It is an assembly structure (partial) of a honeycomb ceramic separation membrane module;

[0030] Figure 7 It is a radial cross-sectional diagram of a plug ring;

[0031] Figure 8 It is a cross-sectional view of a group of honeycomb ceramic separation membrane sheets. Detailed implementation manners

[0032] The production of ceramic separation membranes involves multiple main technological processes such as mixing, clay kneading, extrusion, drying, firing, and film coating. Among them, extrusion, drying, and firing have a significant impact on the external dimensions of the product. For example, due to the inevitable non-uniformity of the temperature distribution in the kiln, the green bodies placed at different positions on the kiln car will have different degrees of firing shrinkage. Moreover, for long strip-shaped green bodies, there are also differences in firing shrinkage between the ends and the middle. The inconsistencies or deviations of these production process parameters result in different degrees of deviation between the external dimensions of each ceramic separation membrane sheet and the design values, which brings many difficulties to the assembly of ceramic separation membranes. For this reason, first, multiple ceramic separation membrane sheets need to be combined into a ceramic separation membrane element with a dimensional deviation smaller than the assembly requirement.

[0033] As Figure 1 shown, multiple ceramic separation membrane sheets with different widths form an approximately cylindrical combined body. The number of ceramic separation membrane sheets is 2 - 10. When the number is 2, they are 2 approximately semi-circular sheets. When the number is greater than 2, the thickness of the sheets decreases accordingly. Reducing the thickness of the sheets is beneficial to controlling the production yield of the sheets and also beneficial to reducing the resistance suffered by the water flow in the sheets. However, if the number of sheets is too large, it will increase the number of molds and bring a burden to production management. Therefore, the number of sheets should not exceed 10, and preferably the number of sheets is 6 - 8.

[0034] Since there are different deviations in the size of each diaphragm of the same specification, it is difficult to directly seal with a rubber sealing ring. A relatively simple method is to insert a group of diaphragms into a combination plate and arrange them into a cylinder, and fix the diaphragm and the combination plate together with an adhesive to form a honeycomb ceramic separation membrane element. Figure 2 As shown, it is a schematic diagram of a honeycomb ceramic separation membrane element. Several ceramic separation membrane diaphragms 301 and a combination plate 302 are fixed together with an adhesive. The adhesive is epoxy resin, polyurethane or other components, and has properties such as water resistance, chemical corrosion resistance and other properties required for the application.

[0035] When manufacturing a honeycomb ceramic separation membrane element, it needs to be carried out on a special tooling. Using this tooling can accurately control the distance between the two end combination plates, ensure that the two combination plates are parallel and the centers are on the same axis, so as to obtain a cylindrical ceramic separation membrane element with accurate external dimensions. The honeycomb ceramic separation membrane element encapsulated in the above manner has consistent external dimensions, which is a prerequisite for the subsequent smooth assembly of the honeycomb ceramic separation membrane module.

[0036] Figure 3 As shown in the structural schematic diagram of the above combination plate 302, the material of the combination plate 302 is engineering plastic, stainless steel, preferably glass fiber reinforced ABS. Intervals 3022 and hollow-outs are provided on the combination plate 302 according to the shape of the ceramic separation membrane diaphragm 301. The ceramic separation membrane diaphragms 301 are sequentially inserted into the hole positions of the combination plate according to the shape and size. The distance between the diaphragms 301 is controlled by the interval 3022 between the diaphragm 301 and the diaphragm 301. The combination of the diaphragms 301 can be inserted vertically or horizontally.

[0037] After the diaphragm 301 is inserted into the combination plate 302, the two end combination plates 302 are adjusted to the designed position and fixed on the tooling. Then, with the tooling in a vertical state, an adhesive is injected into the combination plate frame 3021 at the glue injection position, so that the adhesive levels to the entire inside of the frame, especially pay attention to whether the adhesive levels to the gap between the diaphragm 301 and the diaphragm 301. After the glue cures, turn over the tooling so that the combination plate 302 at the other end is in the glue injection position, and inject the adhesive.

[0038] After the adhesives in the two combination plates 302 are completely cured, they are removed from the tooling to obtain the honeycomb ceramic separation membrane element 3. There are also 1-2 combination plate grooves 3023 provided on the outer circle of the combination plate 302, and a third O-ring 503 is sleeved in the combination plate groove 3023 for subsequent assembly of the separation membrane module.

[0039] Combined with Figures 2 to 7, in the embodiment of the present utility model, a honeycomb ceramic separation membrane module is disclosed, which includes a membrane shell, a plug ring 4, a sealing ring, and the above-mentioned honeycomb ceramic separation membrane element 3. The sealing ring is a standard O-ring, including a first O-ring 501, a second O-ring 502, and a third O-ring 503 sleeved in the combined disc groove 3023. The above-mentioned sealing rings are all made of rubber material, and ethylene propylene diene monomer (EPDM), silicone rubber, and fluororubber are preferably selected according to engineering application requirements.

[0040] As Figure 4 and Figure 5 shown, the membrane shell includes a membrane shell cylinder body 1 in the middle and membrane shell end heads 2 at both ends. Its material can be engineering plastic, fiberglass reinforced plastic, or stainless steel, and stainless steel is preferred. The membrane shell end head 2 is provided with a raw material liquid inlet 201 and a raw material liquid outlet 203. The membrane shell cylinder body 1 is provided with a filtrate outlet 103 and a backwash liquid inlet 102. The membrane shell cylinder body 1 and the membrane shell end head 2 are connected into an integral membrane shell through a cylinder flange 101 and a head flange 202 with screws or fittings.

[0041] As Figure 6 shown, the honeycomb ceramic separation membrane element 3 is placed inside the membrane shell, and the plug ring 4 is inserted between the membrane shell and the ceramic separation membrane element 3 to combine the ceramic separation membrane element 3 and the membrane shell together. The plug ring 4 plays a role of connection and sealing. Refer to Figure 7 , the plug ring 4 is a cylinder with a step. In the figure, the plug ring 4 is divided into two parts, A and B. Part A is the plug ring cylinder, and part B is the plug ring step.

[0042] The outer diameter of the plug ring cylinder is smaller than the inner diameter of the membrane shell cylinder body 1. Preferably, the difference between the former and the latter is -2~0 mm; the inner diameter of the plug ring cylinder is larger than the outer diameter of the combined disc 302 of the ceramic separation membrane element 3. Preferably, the difference between the former and the latter is 0.5~1.5 mm. The plug ring cylinder is sleeved on the combined disc 302, and the gap between the two is sealed by the third O-ring 503, that is, the plug ring 4 and the combined disc 302 are sealed by the third O-ring 503.

[0043] The diameter of the plug ring step is smaller than the diameters of the cylinder flange 101 and the head flange 202, and larger than the outer diameter of the membrane shell cylinder body 1. The cylinder flange 101 is provided with a flange groove, and the first O-ring 501, the second O-ring 502, and the plug ring step are placed in the flange groove. The plug ring 4 and the membrane shell cylinder body 1 are sealed by the second O-ring 502 on the cylinder flange 101, and the membrane shell cylinder body 1 and the membrane shell end head 2 are sealed by the first O-ring 501 on the cylinder flange 101.

[0044] After the assembly at both ends of the ceramic separation membrane module is completed, the plug ring 4 and each sealing ring divide the internal space of the ceramic separation membrane module into two relatively independent parts, namely the raw liquid cavity and the filtrate cavity. The raw liquid flows in and out through the pipeline interface of the membrane shell head 2, and the filtrate flows out through the pipeline interface of the membrane shell cylinder 1. There is no cross-flow between the raw liquid and the filtrate, and the connection channel between the raw liquid cavity and the filtrate cavity is only the functional micropores of the ceramic separation membrane diaphragm.

[0045] The pipe fittings, screws and other hardware fittings involved in the above structure are made of stainless steel. The assembly structure of the present utility model has the characteristics of simplicity and rapidity. The specific assembly steps are as follows. Since the present utility model is an axisymmetric structure, the two ends along its length direction are respectively named the first end and the second end:

[0046] 1) Prepare the materials and components required for assembling the honeycomb ceramic separation membrane module;

[0047] 2) Insert the third O-ring 503 into the combined disk groove 3023 at both ends of the ceramic separation membrane element 3;

[0048] 3) Place the membrane shell head 2 at the first end on the tooling base with the opening facing upwards;

[0049] 4) Put the plug ring 4 outside the combined disk 302 at the first end of the ceramic separation membrane element 3, and place the first end of the ceramic separation membrane element 3 downwards, then place the ceramic separation membrane element 3 vertically on the membrane shell head 2 at the first end;

[0050] 5) Respectively place the first O-ring 501 and the second O-ring 502 in the flange disk groove of the cylinder flange disk 101 at the first end of the membrane shell cylinder 1, and place the first end of the membrane shell cylinder 1 downwards, then put the membrane shell cylinder 1 outside the ceramic separation membrane element 3, so that the cylinder flange disk 101 at the first end is positioned on the head flange disk 202 at the first end, and connect and fix the cylinder flange disk 101 at the first end and the head flange disk 202 with screws or union fittings;

[0051] 6) Put the plug ring 4 outside the combined disk 302 at the second end of the ceramic separation membrane element 3;

[0052] 7) Respectively place the first O-ring 501 and the second O-ring 502 in the flange disk groove of the cylinder flange disk 101 at the second end of the membrane shell cylinder 1;

[0053] 8) Cover the membrane shell head 2 at the second end on the cylinder flange disk 101 at the second end of the membrane shell cylinder 1, and connect and fix the cylinder flange disk 101 at the second end and the head flange disk 202 with screws or union fittings.

[0054] After the above installation steps, the structure as shown in Figure 4 、 Figure 5The honeycomb ceramic separation membrane module shown

[0055] According to the above structure and steps, the following set of embodiments is provided. The components and main accessories used include: a set of 8 ceramic separation membrane sheets, 2 combination disks, 1 membrane shell cylinder (including 2 cylinder flange disks), 2 membrane shell heads (including 1 head flange disk each), 2 union clamps, and 6 O-ring seals. The dimensions are as follows:

[0056] 1) Ceramic separation membrane sheets, as Figure 8 shown, consisting of 8 ceramic separation membrane sheets of four sizes to form a honeycomb structure. The length of each membrane sheet is 1500 mm, the thickness is 21.2 mm, and the 8 membrane sheets are arranged in parallel at an interval of 2 mm to form a cylinder with a diameter of 188.4 mm. The material of the ceramic separation membrane sheets is alumina or silicon carbide ceramic.

[0057] 2) Combination disks, as Figure 3 shown. The outer diameter of the combination disk is 210 mm, the thickness is 20 mm, the inner diameter is 195 mm, and the groove depth is 15 mm. An annular groove is provided on the outer wall of the combination disk, with a groove width of 5.4 mm and a groove depth of 3 mm for placing the third O-ring seal. The outer diameter of the third O-ring seal is 205 mm and the wire diameter is 5 mm. The material of the combination disk is ABS plastic.

[0058] 3) Membrane shell cylinder, as Figure 4 and Figure 5 shown. The length of the membrane shell cylinder is 1520 mm (including the thickness of the cylinder flange disk), the outer diameter is 225 mm, and the inner diameter is 219 mm. As Figure 6 shown, the outer diameter of the cylinder flange disk is 260 mm and the thickness is 18 mm. Circular grooves with diameters of 235 mm and 250 mm are provided on the cylinder flange disk for placing the plug ring, the second O-ring seal, and the first O-ring seal. The outer diameter of the second O-ring seal is 235 mm and the wire diameter is 5 mm. The outer diameter of the first O-ring seal is 250 mm and the wire diameter is 5 mm. 2 DN50 pipe joints are provided on the membrane shell cylinder. The material of the membrane shell cylinder (including the cylinder flange disk and the pipe joint) is SUS304 stainless steel.

[0059] 4) Membrane shell head, as Figure 4 and Figure 5 shown. The membrane shell head uses a standard head with an outer diameter of 219 mm, and the head flange disk is welded. The outer diameter of the head flange disk is 260 mm and the thickness is 18 mm. 1 DN50 pipe joint is provided on each membrane shell head. The material of the membrane shell head (including the head flange disk and the pipe joint) is SUS304 stainless steel.

[0060] 5) Union clamp, the model of the union clamp is Φ260 mm, and the material is SUS304 stainless steel.

[0061] 6) O-ring seals, two O-ring seals each with outer diameters of 205 mm, 235 mm, and 250 mm, and the wire diameter of each O-ring seal is 5 mm. The material of the O-ring seals is ethylene propylene diene monomer (EPDM) rubber.

[0062] After preparing the components and fittings required for assembling the honeycomb ceramic separation membrane, the assembly is carried out according to the following steps:

[0063] 1) On a specially designed membrane element tooling, combine the ceramic separation membrane sheets and the combination disks into a honeycomb ceramic separation membrane element using polyurethane adhesive.

[0064] 2) On a specially designed membrane module tooling, assemble the honeycomb ceramic separation membrane element, membrane shell cylinder, membrane shell head, plug ring, sealing ring, etc. according to the Figure 4 , Figure 5 and Figure 6 shown structure, and connect and fix the cylinder flange and the head flange with a union clamp.

[0065] After the above assembly, a honeycomb ceramic separation membrane module with an outer shape as shown in Figure 4 is obtained. The length of the honeycomb ceramic separation membrane module is 1740 mm (calculated according to the pipe interface), the diameter is 260 mm (excluding the pipe interface), and the separation membrane area is 25 m 2 .

[0066] In summary, the present utility model solves the difficulty in product assembly caused by inconsistent dimensional deviations of ceramic separation membrane products, simplifies and speeds up the assembly of ceramic separation membrane modules, and greatly reduces the volume of ceramic separation membrane modules. Specifically, it is reflected in:

[0067] 1) The present utility model combines multiple ceramic separation membrane sheets together with combination disks, and obtains a honeycomb ceramic separation membrane element with precisely consistent external dimensions by accurately controlling the relative positions of the combination disks at both ends;

[0068] 2) The honeycomb ceramic separation membrane element with precisely consistent external dimensions enables the design dimensions of the membrane shell not to require a large margin. For example, the inner diameter of the membrane shell cylinder 1 only needs to be 8 - 10 mm larger than the outer diameter of the combination disk 302. This difference not only ensures sufficient distance between the ceramic separation membrane sheet 301 and the membrane shell cylinder 1 to reduce the resistance of liquid flow, but also does not overly increase the external dimensions of the ceramic separation membrane module;

[0069] 3) Compared with the assembly and sealing structures of similar products at home and abroad, the plug ring structure adopted by the present utility model does not require thick combination disks and large-diameter membrane shells. The diameter and length of the ceramic separation membrane module are significantly reduced, and it has a higher separation membrane packing density.

[0070] Finally, it should be noted that the above are only preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A honeycomb ceramic separation membrane assembly, characterized in that: It includes ceramic separation membrane element, membrane shell, plug ring and sealing ring. The ceramic separation membrane element is a cylindrical honeycomb ceramic separation membrane assembly consisting of 2 to 10 ceramic separation membrane sheets and two combination disks, wherein the combination disks are respectively located at two ends of the cylindrical honeycomb ceramic separation membrane assembly, and the combination disks are parallel to each other, and the centers of the circles are on the same axis; The ceramic separation membrane element is fixed to the inside of the membrane shell through the plug ring, one side of the plug ring is sleeved on the combined disk, and the other side is embedded in the membrane shell, and the sealing ring is respectively provided between the plug ring and the membrane shell, and between the plug ring and the ceramic separation membrane element; The plug ring and the sealing ring divide the internal space of the membrane shell into two relatively independent parts, namely, a raw liquid cavity and a filtrate cavity. The communication channel between the raw liquid cavity and the filtrate cavity only has the functional micropores of the ceramic separation membrane.

2. The honeycomb ceramic separation membrane assembly according to claim 1, characterized in that: The membrane shell comprises a membrane shell cylinder and a membrane shell head arranged at both ends of the membrane shell cylinder. The membrane shell cylinder and the membrane shell head are respectively provided with a cylinder flange and a head flange. The cylinder flange and the head flange are connected by screws or joints.

3. The honeycomb ceramic separation membrane assembly according to claim 2, characterized in that: The two membrane shell heads are respectively provided with an inlet and an outlet for the raw liquid, and the membrane shell cylinder is provided with an outlet for the filtrate and an inlet for the backwash liquid.

4. The honeycomb ceramic separation membrane assembly according to claim 2, characterized in that: The plug ring is a cylinder with steps, including a plug ring cylinder and a plug ring step. The outer diameter of the plug ring cylinder is smaller than the inner diameter of the membrane shell cylinder, and the inner diameter of the plug ring cylinder is larger than the outer diameter of the combined disk; the diameter of the plug ring step is smaller than the diameters of the cylinder flange and the head flange, and larger than the outer diameter of the membrane shell cylinder.

5. The honeycomb ceramic separation membrane assembly according to claim 4, characterized in that: The cylinder flange is provided with two flange grooves, and the outer side of the combined disk is provided with 1 to 2 combined disk grooves, and the sealing ring includes a first O-ring, a second O-ring and a third O-ring, and the first O-ring and the second O-ring are respectively located in the two flange grooves, and the third O-ring is located in the combined disk groove; the membrane shell cylinder and the membrane shell head are sealed by the first O-ring, the plug ring and the membrane shell cylinder are sealed by the second O-ring, and the plug ring and the combined disk are sealed by the third O-ring.

6. The honeycomb ceramic separation membrane assembly according to claim 5, characterized in that: The sealing ring is a standard O-ring made of rubber material, and can be EPDM rubber, silicone rubber or fluororubber, to prevent cross-flow or leakage between the raw liquid cavity and the filtrate cavity.

7. The honeycomb ceramic separation membrane assembly according to claim 1, characterized in that: The combined disk is provided with intervals and hollows according to the shape and size of the ceramic separation membrane sheets. The ceramic separation membrane sheets are neatly arranged, sequentially inserted into the hollows and separated by the intervals to form the cylindrical honeycomb ceramic separation membrane assembly.

8. The honeycomb ceramic separation membrane assembly according to claim 7, characterized in that: The number of the ceramic separation membrane sheets is 6 to 8.

9. The honeycomb ceramic separation membrane assembly according to claim 7, characterized in that: The combined disk and the ceramic separation membrane are fixed by using adhesive, and the adhesive is epoxy resin or polyurethane with water-resistant and chemical-resistant properties.

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