A rotary ceramic membrane filter

Abstract

The application discloses a rotary ceramic membrane filter, which can be applied to high-efficiency filtration of various materials. The application combines ceramic membrane filtration and centrifugal action, effectively overcomes the problems of large flow resistance, low treatment flow and low filtration efficiency of the flat plate ceramic membrane filter, and overcomes the problems of high energy consumption, low treatment flow and low filtration efficiency of the ordinary ceramic membrane filter caused by the input of large water pressure. The rotary ceramic membrane filter has high filtration efficiency and filtration precision, large treatment flow, high clarity of the filtrate filtered by the filter, and can reduce the treatment burden of the subsequent process, so that the treatment capacity of the whole process is greatly improved by improving the filtration efficiency in the process.

Description

Technical Field

[0001] This invention relates to a rotary ceramic membrane filter. Background Technology

[0002] Filtration is an indispensable process in various fields such as biopharmaceuticals, food, and chemicals. In recent years, ceramic membrane filtration has been widely used in various industries. Compared with ordinary filtration methods, ceramic membrane modules offer higher filtration precision. Many impurities in materials, such as mycelia, proteins, solid particles, and inorganic salts, can be effectively removed using ceramic membranes. The efficiency of ceramic membrane filtration is inseparable from the selection of a suitable and efficient ceramic membrane filter. Currently, commonly used ceramic membrane filters often employ flat-plate ceramic membrane filters, ordinary tank-type ceramic membrane filters, and related units. Flat-plate ceramic membrane filters use a multi-layer flat plate design for the ceramic membrane, but their disadvantages include higher flow resistance and lower throughput, making them unsuitable for large-scale production. Ordinary ceramic membrane filters use multiple ceramic membrane filter tubes and employ downward airflow, offering advantages such as simple structure and easy cleaning; however, their disadvantages include lower filtration efficiency and lower permeability. Summary of the Invention

[0003] Purpose of the invention: The purpose of this invention is to provide a rotary ceramic membrane filter with high filtration efficiency and filtration accuracy.

[0004] Technical solution: The rotary ceramic membrane filter of the present invention includes a tank and a feeding zone E and a filtration zone F disposed in the tank; the feeding zone E is provided with a feeding port; the filtration zone F is provided with a rotary filtration assembly; it also includes a driving mechanism, the fixed end of the driving mechanism is fixed to the tank, and the driving end of the driving mechanism is fixedly connected to a rotating shaft; the rotating shaft passes through the tank axially.

[0005] The rotary filter assembly includes positioning rods, a hollow tubular ceramic membrane, an upper rotating plate, a middle rotating plate, and a lower rotating plate. Each of the upper, middle, and lower rotating plates has annularly distributed ceramic membrane holes, the diameter of which is the same as the outer diameter of the ceramic membrane, for the passage and fixation of the ceramic membrane. Positioning rod holes are also evenly distributed on the outer circumference of each of the upper, middle, and lower rotating plates for the assembly and fixation of the positioning rods. The positioning rods and the hollow tubular ceramic membrane pass through corresponding holes on the middle rotating plate, and their two ends are fixedly connected to corresponding holes on the upper and lower rotating plates. Shaft holes are also provided at the center of the upper and lower rotating plates, through which the upper and lower rotating plates are fixedly connected to a rotating shaft.

[0006] The feed zone E and the filtration zone F are connected by ceramic membrane holes I on the upper rotating plate. The liquid in the feed zone E enters the ceramic membrane through ceramic membrane holes I. The motor rotates, which drives the filtration assembly to rotate through the rotating shaft. Under the action of centrifugal force, the liquid in the ceramic membrane is filtered by the ceramic membrane and flows into the outer area of ​​the ceramic membrane and is discharged from the tank through the filtrate outlet. The turbid liquid in the ceramic membrane flows out from the ceramic membrane hole II corresponding to the lower port of the ceramic membrane and enters the separation chamber. The separation chamber further separates the turbid liquid into light turbid liquid and concentrated turbid liquid, and discharges the light turbid liquid and concentrated turbid liquid from the corresponding outlets of the tank.

[0007] The driving mechanism is a motor, which is fixed to the top of the tank.

[0008] Among them, an upper fixed position and a lower fixed position are fixed at the upper end and the lower end of the filter area F, respectively. The upper rotating plate is slidably connected to the upper fixed position, and the lower rotating plate is slidably connected to the lower fixed position.

[0009] The filter zone F is also provided with an air vent on its side wall, located below the upper fixed position, to balance the pressure inside the entire filter.

[0010] The rotary filter assembly also includes a rotating cylinder. A central circular hole is provided on the central rotating plate for the rotating cylinder to pass through. The rotating cylinder is positioned at the center of the rotary filter assembly. The ratio of the radius 'a' of the rotating cylinder to the radius 'b' of the annular region where the ceramic membrane is located is 1:2 to 1:3. If the ratio is too large, the centrifugal force is greater, but the flow rate will decrease; if the ratio is too small, the fluid in the middle part experiences less centrifugal force, resulting in poor filtration. The purpose of the rotating cylinder is to ensure that the fluid flowing through the hollow tubular ceramic membrane receives sufficient centrifugal force, resulting in higher permeability and guaranteed filtration effect.

[0011] The rotating cylinder includes a cylinder body and a shaft hole III disposed within the cylinder body. The shaft hole III is fixed within the cylinder body by internal steel bars. An external protrusion is also provided outside the cylinder body. The external protrusion can limit the rotation plate in the middle. In addition, three or four sets of internal steel bars are evenly installed at equal intervals around the shaft hole III. The cylinder body is fixedly connected to the rotating shaft through the shaft hole III.

[0012] The separation chamber is located in the concentrated liquid collection area G. The separation chamber is equipped with a centrifugal rotating disk. The centrifugal rotating disk includes a tray, a shaft hole IV set at the center of the tray, multiple blades arranged along the outer circumference of the shaft hole IV, and concentrated liquid holes I set on the outer circumference of the tray bottom plate. The centrifugal rotating disk is fixedly connected to the rotating shaft through the shaft hole IV. The centrifugal rotating disk is fixed in the separation chamber by the tray.

[0013] The tray and the shaft hole IV have a hollow structure, and the tray and the shaft hole IV are fixedly connected by a rib structure.

[0014] The separation chamber is connected to the light turbid liquid collection area H through a perforated structure between the tray and the shaft hole IV. Side concentrated liquid holes II and III are provided on the outer periphery of the separation chamber. The separation chamber includes a funnel-shaped collection chamber with a centrifugal rotating disk located below it. The turbid liquid flows through the funnel-shaped collection chamber onto the blades of the centrifugal rotating disk. Under the high-speed centrifugal action of the blades, the concentrated turbid liquid experiences greater centrifugal force and moves upward along the tray. During this upward movement, the concentrated turbid liquid flows into the separation chamber through the concentrated turbid liquid hole I, then flows into the concentrated turbid liquid collection area G through the concentrated turbid liquid hole II on the side wall of the separation chamber, and finally flows out of the tank from the concentrated turbid liquid outlet. The light turbid liquid collects in the light turbid liquid collection area H below the separation chamber through the perforated structure between the tray and the shaft hole IV, and finally flows out of the tank from the light turbid liquid outlet.

[0015] It also includes a fixing frame located at the end of the rotating shaft, which is fixed to the bottom of the tank. The fixing frame includes fixing ribs and bearing positions. The fixing ribs are made of thin steel bars, and three or four sets of fixing ribs are evenly installed at equal intervals around the bearing positions.

[0016] The two ends of the fixing rib are welded to the inner wall of the tank and the outer side of the bearing position, respectively; the rotating shaft and the fixing frame are fixedly connected by a sliding bearing or a rolling bearing.

[0017] Beneficial Effects: Compared with existing technologies, this invention has the following significant effects: The filter of this invention can be applied to the high-efficiency filtration of various materials. By combining ceramic membrane filtration and centrifugation, this invention effectively overcomes the problems of high flow resistance, low flow rate, and low filtration efficiency of flat ceramic membrane filters. It also overcomes the problems of high energy consumption, low flow rate, and low filtration efficiency caused by the need for high inlet water pressure in ordinary ceramic membrane filters. The rotary ceramic membrane filter of this invention has high filtration efficiency and filtration accuracy, large flow rate, and high clarity of the filtrate after filtration, which can reduce the processing burden of subsequent processes. Thus, by improving the filtration efficiency in the process flow, the overall processing capacity of the process flow is greatly improved. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a rotary ceramic membrane filter.

[0019] Figure 2 for Figure 1 Sectional view along line AA in the middle;

[0020] Figure 3 for Figure 2 BB-direction sectional view in the middle;

[0021] Figure 4This is a schematic diagram of the upper rotating plate.

[0022] Figure 5 This is a schematic diagram of the central rotating plate.

[0023] Figure 6 This is a schematic diagram of the lower rotating plate.

[0024] Figure 7 This is a schematic diagram of the ceramic membrane structure;

[0025] Figure 8 This is a schematic diagram of the positioning rod.

[0026] Figure 9 This is a schematic diagram of the fixed frame structure;

[0027] Figure 10 This is a schematic diagram of the rotating cylinder.

[0028] Figure 11 for Figure 10 DD section view;

[0029] Figure 12 This is a structural diagram of a centrifugal rotating disk;

[0030] Figure 13 This is a cross-sectional view of the separation cavity.

[0031] Figure 14 This is a front view of Example 1;

[0032] Figure 15 This is a top view of Example 1;

[0033] Figure 16 This is a front view of Example 2;

[0034] Figure 17 This is a top view of Example 2. Detailed Implementation

[0035] like Figures 1-15 As shown, the rotary ceramic membrane filter of the present invention includes a tank 1 and a feeding zone E and a filtration zone F disposed within the tank 1; the feeding zone E is provided with a feeding port 2 for initial material to enter the filter; the filtration zone F is provided with a rotary filtration assembly; the rotary ceramic membrane filter of the present invention also includes a drive mechanism, which is a motor 14, fixed to the top of the tank 1, and the drive end of the motor 14 is fixedly connected to a rotating shaft 15; the rotating shaft 15 passes through the tank 1 axially.

[0036] The rotary filter assembly includes a positioning rod 8, a hollow tubular ceramic membrane 9, an upper rotating plate 10, a middle rotating plate 11, and a lower rotating plate 12;

[0037] The upper rotating plate 10 has ceramic membrane holes I10-1 evenly distributed in a ring. The diameter of the ceramic membrane holes I10-1 is basically the same as the outer diameter of the ceramic membrane 9, which are used for the ceramic membrane 9 to pass through and be fixed. The upper rotating plate 10 also has positioning rod holes I10-2 evenly distributed in a circumferential direction at its edge, which are used for the assembly and fixing of positioning rods 8. The shaft hole I10-3 of the upper rotating plate 10 is used to fix the upper rotating plate 10 on the rotating shaft 15.

[0038] The central rotating plate 11 has ceramic membrane holes III11-1 evenly distributed in a ring. The diameter of the ceramic membrane holes III11-1 is basically the same as the outer diameter of the ceramic membrane 9, which are used for the ceramic membrane 9 to pass through and be fixed. The central rotating plate 11 also has positioning rod holes II11-2 evenly distributed in a circumferential direction at its edge, which are used for the assembly and fixing of the positioning rod 8. The central rotating plate 11 has a circular hole 11-3 in the middle, the diameter of which is equivalent to the outer diameter of the rotating cylinder 16.

[0039] The lower rotating plate 12 has ceramic membrane holes II12-1 evenly distributed in a ring. The ceramic membrane holes II12-1 are divided into upper and lower sections. The inner diameter of the ceramic membrane holes II12-1 gradually decreases along the longitudinal direction (from top to bottom). The diameter of the upper section of the ceramic membrane holes II12-1 is basically the same as the outer diameter of the ceramic membrane 9, which is used for the ceramic membrane 9 to pass through and be fixed. The diameter of the lower section of the ceramic membrane holes II12-1 is slightly smaller than the outer diameter of the ceramic membrane 9, which is used to limit the ceramic membrane 9. The lower rotating plate 12 also has positioning rod holes III12-2 evenly distributed around its edge for the assembly and fixing of the positioning rod 8. In addition, the shaft hole II12-3 of the lower rotating plate 12 is used to fix the lower rotating plate 12 on the rotating shaft 15.

[0040] The upper rotating plate 10, the middle rotating plate 11, and the lower rotating plate 12, and the ceramic membrane holes and positioning rod holes of the upper, middle and lower rotating plates should be aligned one by one to facilitate the installation of the tubular ceramic membrane 9.

[0041] The positioning rod 8 consists of a rod body 8-1 and six nut structures 8-2 in total (upper, middle, and lower). Six or eight sets of positioning rods 8 are evenly arranged circumferentially on the upper, middle, and lower rotating plates to fix the rotating plates and ensure the stability of the entire rotating part.

[0042] Upper fixing position 6 and lower fixing position 7 are fixed at the upper and lower ends of the filtration zone F, respectively. The upper rotating plate 10 is slidably connected to the upper fixing position 6, and the lower rotating plate 12 is slidably connected to the lower fixing position 7. There are micron-sized gaps (not greater than 100μm) between the upper rotating plate 10 and the upper fixing position 6, and between the lower rotating plate 12 and the lower fixing position 7. These gaps ensure the normal operation of the rotating parts and the relative independence between different areas, minimizing the mutual influence of fluids between different areas. A wear-resistant material layer can be coated on the outer surface of the upper fixing position 6 and the lower fixing position 7.

[0043] The feeding zone E and the filtration zone F are connected by ceramic membrane holes I10-1 on the upper rotating plate 10. The liquid in the feeding zone E enters the ceramic membrane 9 through the ceramic membrane holes I10-1. The motor 14 rotates, which drives the filtration assembly to rotate through the rotating shaft 15. Under the action of centrifugal force, the liquid in the ceramic membrane 9 is filtered by the ceramic membrane 9 and flows into the outer area of ​​the ceramic membrane 9 and is discharged from the tank 1 through the filtrate outlet 5. The filtrate outlet 5 is located above the lower fixed position 7 and is used to discharge the filtrate collected in zone F from the ceramic membrane. The turbid liquid in the ceramic membrane 9 flows out from the ceramic membrane hole II12-1 corresponding to the lower port of the ceramic membrane 9 and enters the separation chamber 19. The separation chamber 19 further separates the turbid liquid into light turbid liquid and concentrated turbid liquid, and discharges the light turbid liquid and concentrated turbid liquid from the corresponding outlets of the tank 1.

[0044] Among them, an air vent 4 is provided on the side wall of the filter zone F. The air vent 4 is located below the upper fixed position 6 and is used to balance the pressure inside the entire filter.

[0045] The rotary filter assembly also includes a rotary cylinder 16. A central circular hole 11-3 is provided on the central rotating plate 11 for the rotary cylinder 16 to pass through. The rotary cylinder 16 is located at the center of the rotary filter assembly. The rotary cylinder 16 includes a cylinder 16-1 and a shaft hole III 16-3 disposed within the cylinder 16-1. The shaft hole III 16-3 is fixed within the cylinder 16-1 by internal reinforcing bars 16-2. An external protrusion 16-4 is also provided on the outside of the cylinder 16-1; the external protrusion 16-4 can limit the movement of the central rotating plate 11. Furthermore, three or four sets of internal reinforcing bars 16-2 are evenly installed at equal intervals around the shaft hole III 16-3. The cylinder 16-1 is fixedly connected to the rotating shaft 15 through the shaft hole III 16-3.

[0046] The separation chamber 19 is located in the concentrated liquid collection area G. A centrifugal rotating disk 17 is provided inside the separation chamber 19. The centrifugal rotating disk 17 includes a tray 17-2, a shaft hole IV17-5 located at the center of the tray 17-2, multiple blades 17-3 arranged along the outer circumference of the shaft hole IV17-5, and concentrated liquid holes I17-1 arranged on the outer circumference of the bottom plate of the tray 17-2. The centrifugal rotating disk 17 is fixedly connected to the rotating shaft 15 through the shaft hole IV17-5. The centrifugal rotating disk 17 is fixed inside the separation chamber 19 by the tray 17-2. There is a hollow structure between the tray 17-2 and the shaft hole IV17-5, and the tray 17-2 and the shaft hole IV17-5 are fixedly connected by a rib structure.

[0047] The separation chamber 19 is connected to the light turbid liquid collection area H through the hollow structure between the tray 17-2 and the shaft hole IV17-5; the outer periphery of the separation chamber 19 is provided with side concentrated turbid liquid holes II19-2 and III19-3; the separation chamber 19 includes a funnel-shaped collection chamber 19-1, and the centrifugal rotating disk 17 is located below the funnel-shaped collection chamber 19-1. The turbid liquid flows through the funnel-shaped collection chamber 19-1 to the blades 17-3 of the centrifugal rotating disk 17, where the high-speed rotation of the blades 17-3... Under centrifugal force, the concentrated liquid moves upward along tray 17-2. During this upward movement, the concentrated liquid flows into the separation chamber 19 through concentrated liquid hole I17-1, and then into the concentrated liquid collection area G through concentrated liquid hole II19-2 on the side wall of the separation chamber 19. Finally, it flows out of the tank 1 from the concentrated liquid outlet 18. The light liquid collects in the light liquid collection area H below the separation chamber 19 through the perforated structure between tray 17-2 and shaft hole IV17-5, and finally flows out of the tank 1 from the light liquid outlet 3. The light liquid outlet 3 is located at the bottom of the lower end cap of the tank and is used to discharge the light liquid collected in area H. The concentrated liquid outlet 18 is located at the bottom of area G and is used to discharge the concentrated liquid collected in area G.

[0048] The rotating shaft 15 also includes a fixing frame 13 located at the end of the rotating shaft 15, which is fixed to the bottom of the tank body 1. The fixing frame 13 includes fixing ribs 13-2 and bearing positions 13-1. The fixing ribs 13-2 are made of thin steel bars, and three or four sets of fixing ribs 13-2 are evenly installed at equal intervals around the bearing positions 13-1. The two ends of the fixing ribs 13-2 are welded to the inner wall of the tank body 1 and the outer side of the bearing positions 13-1, respectively. The rotating shaft 15 and the fixing frame 13 are fixedly connected by sliding bearings or rolling bearings.

[0049] This invention relates to a rotary ceramic membrane filter. Initial material enters the filter's E zone (feed zone) through the upper inlet 2, then flows into the high-speed rotating tubular ceramic membrane 9. Cross-flow filtration combined with centrifugal action significantly increases permeability, causing the filtrate to rapidly converge towards the outside of the tubular ceramic membrane and ultimately exit from the filtrate outlet 5. Simultaneously, turbid liquid flows out from the lower end of the tubular ceramic membrane 9, first passing through the upper part of the separation chamber 19, where it is collected and flows downwards onto the centrifugal rotating disk 17. Under its high-speed centrifugal action, the turbid liquid is separated into light and concentrated turbid liquids. The concentrated turbid liquid is collected in region G and then flows out from the concentrated turbid liquid outlet 18; the light turbid liquid continues to flow downwards, collecting in region H and finally exiting from the light turbid liquid outlet 3. This separation of concentrated and light turbid liquids significantly optimizes the entire separation process. The concentrated and turbid liquids, and the clear and turbid liquids, respectively enter specialized filtration units for processing the concentrated and turbid liquids, making the entire filtration and separation process more efficient.

[0050] like Figures 16-17As shown, I is a rotary ceramic membrane filter, J is a feed diversion device, K is a light turbid liquid outlet manifold, L is a concentrated turbid liquid outlet collection device, and M is a filtrate outlet collection device. Multiple rotary ceramic membrane filters of this invention are used in parallel, with the multiple rotary ceramic membrane filters evenly arranged circumferentially to increase the processing capacity of the filtration process and improve the overall efficiency of the filtration process.

[0051] like Figures 16-17 As shown, I is a rotary ceramic membrane filter, J is a feed diversion device, K is a light turbid liquid outlet manifold, L is a concentrated turbid liquid outlet collection device, and M is a filtrate outlet collection device. Multiple rotary ceramic membrane filters are used in parallel, arranged in a staggered and uniform manner along the same direction, increasing the processing capacity of the filtration process and improving its overall efficiency.

Claims

1. A rotary ceramic membrane filter, characterized in that: It includes a tank body (1) and a feeding area E and a filtering area F disposed within the tank body (1); the feeding area E is provided with a feeding port (2); the filtering area F is provided with a rotating filtering assembly; it also includes a driving mechanism, the fixed end of which is fixed to the tank body (1), and the driving end of which is fixedly connected to a rotating shaft (15); the rotating shaft (15) passes through the tank body (1) axially. The rotating filter assembly includes a positioning rod (8), a hollow tubular ceramic membrane (9), an upper rotating plate (10), a middle rotating plate (11), and a lower rotating plate (12). Among them, ceramic membrane holes are evenly distributed in an annular pattern on the upper rotating plate (10), the middle rotating plate (11) and the lower rotating plate (12), and the diameter of the ceramic membrane holes is the same as the outer diameter of the ceramic membrane (9); positioning rod holes are also evenly distributed on the outer circumference of the ceramic membrane holes on the upper rotating plate (10), the middle rotating plate (11) and the lower rotating plate (12); positioning rod (8) and hollow tube ceramic membrane (9) pass through the corresponding holes on the middle rotating plate (11) respectively, and their two ends are fixedly connected to the corresponding holes on the upper rotating plate (10) and the lower rotating plate (12) respectively; shaft holes are also provided at the center of the upper rotating plate (10) and the lower rotating plate (12), and the upper rotating plate (10) and the lower rotating plate (12) are fixedly connected to the rotating shaft (15) through the shaft holes; The feeding zone E and the filtration zone F are connected by ceramic membrane holes I (10-1) on the upper rotating plate (10). The liquid in the feeding zone E enters the ceramic membrane (9) through the ceramic membrane holes I (10-1). The motor (14) rotates and drives the filtration assembly to rotate through the rotating shaft (15). Under the action of centrifugal force, the liquid in the ceramic membrane (9) is filtered by the ceramic membrane and flows into the outer area of ​​the ceramic membrane and is discharged from the filtrate outlet (5) into the tank (1). The turbid liquid in the ceramic membrane (9) flows out from the ceramic membrane hole II (12-1) corresponding to the lower port of the ceramic membrane (9) and enters the separation chamber (19). The separation chamber (19) divides the turbid liquid into light turbid liquid and concentrated turbid liquid again, and discharges the light turbid liquid and concentrated turbid liquid from the corresponding outlets into the tank (1).

2. The rotary ceramic membrane filter according to claim 1, characterized in that: An upper fixed position (6) and a lower fixed position (7) are fixed at the upper and lower ends of the filter zone F, respectively. The upper rotating plate (10) is slidably connected to the upper fixed position (6), and the lower rotating plate (12) is slidably connected to the lower fixed position (7).

3. The rotary ceramic membrane filter according to claim 1, characterized in that: The driving mechanism is a motor (14), which is fixed to the top of the tank (1).

4. The rotary ceramic membrane filter according to claim 1, characterized in that: The rotary filter assembly also includes a rotary cylinder (16), and a central circular hole (11-3) is provided on the central rotary plate (11) for the rotary cylinder (16) to pass through. The rotary cylinder (16) is located at the center of the rotary filter assembly.

5. The rotary ceramic membrane filter according to claim 1, characterized in that: The rotating cylinder (16) includes a cylinder (16-1) and a shaft hole III (16-3) provided in the cylinder (16-1). The shaft hole III (16-3) is fixed in the cylinder (16-1) by an internal steel bar (16-2). An external protrusion (16-4) is also provided on the outside of the cylinder (16-1). The cylinder (16-1) is fixedly connected to the rotating shaft (15) through the shaft hole III (16-3).

6. The rotary ceramic membrane filter according to claim 1, characterized in that: The separation chamber (19) is located in the concentrated liquid collection area G. The separation chamber (19) is provided with a centrifugal rotating disk (17). The centrifugal rotating disk (17) includes a tray (17-2), a shaft hole IV (17-5) set at the center of the tray (17-2), multiple blades (17-3) set along the outer circumference of the shaft hole IV (17-5), and concentrated liquid holes I (17-1) set on the outer circumference of the bottom plate of the tray (17-2). The centrifugal rotating disk (17) is fixedly connected to the rotating shaft (15) through the shaft hole IV (17-5). The centrifugal rotating disk (17) is fixed in the separation chamber (19) through the tray (17-2). There is a hollow structure between the tray (17-2) and the shaft hole IV (17-5). The tray (17-2) and the shaft hole IV (17-5) are fixedly connected by a rib structure.

7. The rotary ceramic membrane filter according to claim 6, characterized in that: The separation chamber (19) is connected to the light turbid liquid collection area H through the hollow structure between the tray (17-2) and the shaft hole IV (17-5); the separation chamber (19) is provided with side concentrated turbid liquid holes II (19-2) and III (19-3) on the outer periphery; the separation chamber (19) includes a funnel-shaped collection chamber (19-1), and the centrifugal rotating disk (17) is located below the funnel-shaped collection chamber (19-1). The turbid liquid flows through the funnel-shaped collection chamber (19-1) to the blades (17-3) of the centrifugal rotating disk (17), and under the high-speed centrifugal action of the blades (17-3) the turbid liquid flows onto the blades (17-3). Downward, the concentrated liquid under high centrifugal force moves upward along the tray (17-2). During the upward movement, the concentrated liquid flows into the separation chamber (19) through the concentrated liquid hole I (17-1), and then flows into the concentrated liquid collection area G through the concentrated liquid hole II (19-2) on the side wall of the separation chamber (19). Finally, it flows out of the tank (1) from the concentrated liquid outlet (18). The light liquid under low centrifugal force is collected in the light liquid collection area H below the separation chamber (19) through the hollow structure between the tray (17-2) and the shaft hole IV (17-5). Finally, it flows out of the tank (1) from the light liquid outlet (3).

8. The rotary ceramic membrane filter according to claim 1, characterized in that: It also includes a fixing frame (13) located at the end of the rotating shaft (15); the fixing frame (13) includes fixing ribs (13-2) and bearing positions (13-1), and the fixing ribs (13-2) are evenly installed at equal intervals around the bearing positions (13-1) in 3 to 4 groups.

9. The rotary ceramic membrane filter according to claim 8, characterized in that: The two ends of the fixing rib (13-2) are respectively welded to the inner side wall of the tank body (1) and the outer side of the bearing position (13-1); the rotating shaft (15) and the fixing frame (13) are fixedly connected by a sliding bearing or a rolling bearing.

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