A silicon carbide ceramic membrane ultrafiltration device

Abstract

The utility model discloses a kind of silicon carbide ceramic membrane ultrafiltration devices, including outer shell, as the circular box structure of main support of silicon carbide ceramic membrane ultrafiltration device, observation window is provided on outer shell;Filtering mechanism, fixed in the inside of outer shell, for filtering water source;Water distribution mechanism, fixed in the upper and lower ends of outer shell, for water source diversion and waste water confluence;Water inlet mechanism.The silicon carbide ceramic membrane ultrafiltration device adopts silicon carbide ceramic membrane tube as core filter element, with significant filtration performance advantage.Silicon carbide material has high strength, corrosion resistance and high-temperature resistance characteristics, nanoscale micropore of side wall can efficiently intercept suspended solids, colloid and microorganism, ensure excellent purified water quality.Compared with traditional polymer membrane or aluminum oxide ceramic membrane, silicon carbide ceramic membrane has longer service life, and can adapt to complex water quality environment, such as industrial wastewater and seawater desalination pretreatment scene.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, and in particular to a silicon carbide ceramic membrane ultrafiltration device. Background Technology

[0002] Ultrafiltration technology, as a highly efficient water treatment method, is widely used in industrial wastewater treatment, municipal sewage treatment, and drinking water purification. Existing ultrafiltration devices typically use polymer membranes (such as PVDF and PES) or ceramic membranes (such as alumina) as the filter media, using their microporous structure to trap suspended solids, colloids, and microorganisms in the water. Some devices are equipped with water distribution systems and backwashing mechanisms to achieve uniform water flow distribution and membrane fouling removal. Furthermore, circular housing structures are often used to support the filter components, providing a stable operating environment. These technologies play a crucial role in water purification and water resource recovery, meeting the treatment needs of various scenarios.

[0003] However, existing ultrafiltration devices have some drawbacks. Polymer membranes have low strength, are susceptible to chemical corrosion and mechanical damage, and have a short lifespan; while alumina ceramic membranes are durable, their thermal shock resistance and hardness are limited, resulting in lower filtration accuracy. Poorly designed water distribution systems can lead to uneven water flow distribution, reducing filtration efficiency. Backwashing processes are often ineffective due to complex piping layouts, and membrane fouling is difficult to completely remove. Furthermore, the complex structure and high maintenance costs of these devices limit their widespread application in highly polluted water environments. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a silicon carbide ceramic membrane ultrafiltration device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A silicon carbide ceramic membrane ultrafiltration device includes an outer casing, which is a circular box structure serving as the main support for the device. An observation window is provided on the outer casing. A filtration mechanism, fixed inside the outer casing, is used for filtering water. A water distribution mechanism, fixed at the top and bottom of the outer casing, is used for water source diversion and wastewater merging. A water inlet mechanism, located at the top of the water distribution mechanism, is used for water supply. A drainage mechanism, connected to the side wall of the outer casing and the bottom of the water distribution mechanism, is used for discharging purified water and wastewater. A backwashing mechanism, connected to the side wall of the outer casing and the top of the water distribution mechanism, is used for backwashing the filtration mechanism.

[0007] Preferably, the filtration mechanism includes a support and several silicon carbide ceramic membrane tubes. The support is fixed to the inner wall of the outer shell, and the silicon carbide ceramic membrane tubes are fixed to the support. The silicon carbide ceramic membrane tubes have a tube structure and their side walls are evenly distributed with nanoscale micropores.

[0008] Preferably, the support includes a circular plate, and the edge of the circular plate is provided with a plurality of bayonets and fixing brackets at equal intervals. The plurality of bayonets and fixing brackets are arranged alternately, and the bayonets are matched with the silicon carbide ceramic membrane tube.

[0009] Preferably, the water distribution mechanism includes an upper water distributor located at the upper end of the outer casing and a lower water distributor located at the lower end of the outer casing. The upper water distributor and the lower water distributor have the same structure. The upper water distributor includes a box with a circular box structure. One side of the box is connected to several connecting pipes that match the silicon carbide ceramic membrane tube. The other side of the box is provided with a pipe interface.

[0010] Preferably, the water inlet mechanism includes a water inlet pipe and a water inlet valve. The water inlet pipe is connected to the interior of the upper water distributor, and the water inlet valve is installed on the water inlet pipe. The drainage mechanism includes a sewage discharge pipe and a clean water discharge pipe. The sewage discharge pipe is connected to the bottom of the lower water distributor and is equipped with a sewage valve. The clean water discharge pipe is connected to the side wall of the outer casing and is equipped with a clean water valve.

[0011] Preferably, the backwashing mechanism includes a backwashing inlet pipe and a backwashing wastewater outlet pipe. The backwashing inlet pipe is connected to the side wall of the outer casing and is equipped with a second flushing valve. The backwashing wastewater outlet pipe is connected to the top of the upper water distributor and is equipped with a first flushing valve.

[0012] This utility model has the following beneficial effects:

[0013] 1. This silicon carbide ceramic membrane ultrafiltration device uses silicon carbide ceramic membrane tubes as the core filtration element, offering significant advantages in filtration performance. Silicon carbide material possesses high strength, corrosion resistance, and high-temperature resistance; its nanoscale micropores on the sidewalls efficiently trap suspended solids, colloids, and microorganisms, ensuring excellent purified water quality. Compared to traditional polymer membranes or alumina ceramic membranes, silicon carbide ceramic membranes have a longer lifespan and can adapt to complex water quality environments, such as industrial wastewater and seawater desalination pretreatment scenarios. The device uses a support and bayonet design to fix the membrane tubes, ensuring structural stability and reducing vibration and wear during operation. This high-performance filtration capability combined with a stable structural design not only improves water treatment efficiency but also reduces long-term operating costs, making it suitable for large-scale industrial and civilian applications.

[0014] 2. The optimized water distribution mechanism of the device significantly improves water flow efficiency. The upper and lower water distributors employ a symmetrical circular box structure, precisely matching the connecting pipes to the silicon carbide ceramic membrane tubes to ensure even water distribution to each tube, avoiding dead zones and localized blockages. The rational arrangement of pipe interfaces facilitates connection to inlet, outlet, and backwashing pipelines, simplifying system integration. The uniform water distribution design significantly improves filtration efficiency, reduces the probability of membrane fouling, and lowers energy consumption. This modular design also facilitates installation and expansion, adapting to different treatment scales and providing a flexible and efficient solution for industrial wastewater treatment and municipal water supply.

[0015] 3. The backwashing mechanism effectively extends the service life of the ceramic membrane tubes. The backwash inlet pipe and wastewater outlet pipe are connected via the side wall of the outer casing and the top of the upper water distributor, respectively, and are precisely controlled in conjunction with the first and second flushing valves. The reverse water flow thoroughly flushes away contaminants on the membrane surface, restoring filtration performance and reducing maintenance frequency. Compared to the backwashing system of traditional ultrafiltration units, this design features a simpler piping layout, higher flushing efficiency, and avoids cross-contamination. The valve control is flexible, easy to operate, and suitable for automated integration. This efficient backwashing mechanism significantly reduces operational interruptions and maintenance costs caused by membrane fouling, improving the long-term stability and economy of the unit in highly polluted water environments. Attached Figure Description

[0016] Figure 1 One of the schematic diagrams of the overall structure of a silicon carbide ceramic membrane ultrafiltration device;

[0017] Figure 2 This is the second schematic diagram of the overall structure of a silicon carbide ceramic membrane ultrafiltration device.

[0018] Figure 3 This is a schematic diagram of the internal structure of the outer shell;

[0019] Figure 4 This is a schematic diagram of the support structure;

[0020] Figure 5 This is a schematic diagram of the upper water distributor structure.

[0021] In the diagram: 1. Outer shell; 101. Observation window; 2. Support; 201. Circular plate; 202. Bayonet; 203. Fixing frame; 3. Silicon carbide ceramic membrane tube; 4. Upper water distributor; 401. Box body; 402. Connecting pipe; 403. Pipe interface; 5. Lower water distributor; 6. Inlet pipe; 7. Inlet valve; 8. Sewage discharge pipe; 9. Sewage valve; 10. Clean water discharge pipe; 11. Clean water valve; 12. Backwash sewage discharge pipe; 13. First flush valve; 14. Backwash inlet pipe; 15. Second flush valve. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-5 A silicon carbide ceramic membrane ultrafiltration device includes an outer shell 1, which is a circular box structure serving as the main support for the silicon carbide ceramic membrane ultrafiltration device. An observation window 101 is provided on the outer shell 1. A filtration mechanism is fixed inside the outer shell 1 for filtering water. A water distribution mechanism is fixed at the upper and lower ends of the outer shell 1 for water source diversion and wastewater merging. A water inlet mechanism is located at the top of the water distribution mechanism for water supply. A drainage mechanism is connected to the side wall of the outer shell 1 and the bottom of the water distribution mechanism for discharging purified water and wastewater. A backwashing mechanism is connected to the side wall of the outer shell 1 and the top of the water distribution mechanism for backwashing the filtration mechanism.

[0024] In this embodiment, the outer casing 1 is a circular box structure, providing main support, and the observation window 101 facilitates monitoring of the internal operating status. The filtration mechanism 2 is fixed inside the outer casing 1, using the nanoscale micropores of the silicon carbide ceramic membrane tube 3 to filter the water source, trapping impurities to purify the water. The water distribution mechanisms 4 and 5 are located at the upper and lower ends of the outer casing 1, evenly distributing the water source and merging the wastewater to improve filtration efficiency. The water inlet mechanism 6 is located at the top of the water distribution mechanism 4, supplying the water source to be treated. The drainage mechanisms 8 and 10 are respectively connected to the side wall of the outer casing 1 and the bottom of the water distribution mechanism 5, discharging purified water and wastewater. The backwashing mechanisms 12 and 14 are connected through the side wall of the outer casing 1 and the top of the water distribution mechanism 4 to clean the filtration mechanism 2, extend membrane life, and improve the stability and economy of the device.

[0025] In this utility model, the filtration mechanism includes a support 2 and several silicon carbide ceramic membrane tubes 3. The support 2 is fixed to the inner wall of the outer shell 1, and the silicon carbide ceramic membrane tubes 3 are fixed on the support 2. The silicon carbide ceramic membrane tubes 3 have a tube structure and their side walls are evenly distributed with nanoscale micropores.

[0026] In this embodiment, efficient water filtration is achieved through the support 2 and the silicon carbide ceramic membrane tube 3. The support 2 is fixed to the inner wall of the outer casing 1, providing stable support for the silicon carbide ceramic membrane tube 3 and ensuring structural robustness. The silicon carbide ceramic membrane tube 3 adopts a tube structure, and the uniformly distributed nanoscale micropores on its sidewalls can effectively trap suspended solids, colloids, and microorganisms in the water while allowing water molecules to pass through, achieving a high-precision purification effect. The high strength and corrosion resistance of silicon carbide material give the membrane tube 3 a long service life, making it suitable for treating complex water quality environments. The efficient design of the filtration mechanisms 2 and 3 not only improves water treatment efficiency but also reduces the risk of membrane fouling, reduces maintenance costs, and provides a guarantee for the long-term stable operation of the device.

[0027] In this utility model, the bracket 2 includes a circular plate 201. The edge of the circular plate 201 is provided with a plurality of slots 202 and fixing frames 203 at equal intervals. The slots 202 and fixing frames 203 are arranged alternately. The slots 202 are matched with the silicon carbide ceramic membrane tube 3.

[0028] In this embodiment, the support 2 includes a circular plate 201. The edge of the circular plate 201 is provided with a plurality of bayonet slots 202 and a plurality of fixing brackets 203 at equal intervals. The bayonet slots 202 and the fixing brackets 203 are alternately arranged, and the bayonet slots 202 are matched with the silicon carbide ceramic membrane tube 3.

[0029] In this utility model, the water distribution mechanism includes an upper water distributor 4 disposed at the upper end of the outer shell 1 and a lower water distributor 5 disposed at the lower end of the outer shell 1. The upper water distributor 4 and the lower water distributor 5 have the same structure. The upper water distributor 4 includes a box body 401 with a circular box structure. One side of the box body 401 is connected to a plurality of connecting pipes 402 that match the silicon carbide ceramic membrane tube 3. The other side of the box body 401 is provided with a pipe interface 403.

[0030] In this embodiment, the water distribution mechanism includes an upper water distributor 4 disposed at the upper end of the outer shell 1 and a lower water distributor 5 disposed at the lower end of the outer shell 1. The upper water distributor 4 and the lower water distributor 5 have the same structure. The upper water distributor 4 includes a box body 401 with a circular box structure. One side of the box body 401 is connected to a plurality of connecting pipes 402 that match the silicon carbide ceramic membrane tube 3. The other side of the box body 401 is provided with a pipe interface 403.

[0031] In this utility model, the water inlet mechanism includes a water inlet pipe 6 and a water inlet valve 7. The water inlet pipe 6 is internally connected to the upper water distributor 4, and the water inlet valve 7 is installed on the water inlet pipe 6. The drainage mechanism includes a sewage discharge pipe 8 and a clean water discharge pipe 10. The sewage discharge pipe 8 is connected to the bottom of the lower water distributor 5 and is equipped with a sewage valve 9. The clean water discharge pipe 10 is connected to the side wall of the outer shell 1 and is equipped with a clean water valve 11.

[0032] In this embodiment, the water inlet mechanism includes a water inlet pipe 6 and a water inlet valve 7. The water inlet pipe 6 is connected to the interior of the upper water distributor 4, and the water inlet valve 7 is installed on the water inlet pipe 6. The drainage mechanism includes a sewage discharge pipe 8 and a clean water discharge pipe 10. The sewage discharge pipe 8 is connected to the bottom of the lower water distributor 5, and a sewage valve 9 is installed on the sewage discharge pipe 8. The clean water discharge pipe 10 is connected to the side wall of the outer casing 1, and a clean water valve 11 is installed on the clean water discharge pipe 10.

[0033] In this utility model, the backwashing mechanism includes a backwashing inlet pipe 14 and a backwashing sewage outlet pipe 12. The backwashing inlet pipe 14 is connected to the side wall of the outer shell 1 and a second flushing valve 15 is provided on the backwashing inlet pipe 14. The backwashing sewage outlet pipe 12 is connected to the top of the upper water distributor 4 and a first flushing valve 13 is provided on the backwashing sewage outlet pipe 12.

[0034] In this embodiment, the backwashing mechanism effectively cleans the silicon carbide ceramic membrane tube 3 through the backwash inlet pipe 14, the second flushing valve 15, the backwash wastewater discharge pipe 12, and the first flushing valve 13. The backwash inlet pipe 14 connects to the side wall of the outer casing 1, and the second flushing valve 15 controls the inflow of backwash water to flush away contaminants on the surface of the membrane tube 3. The backwash wastewater discharge pipe 12 connects to the top of the water distributor 4, and the first flushing valve 13 regulates the discharge of flushing wastewater, ensuring efficient cleaning without cross-contamination. This design achieves precise control through independent pipes and valves 13 and 15, thoroughly removing membrane fouling, restoring filtration performance, extending the life of the membrane tube 3, and reducing maintenance frequency. Its simple pipe layout and flexible valve operation facilitate automated integration, improving the long-term stability and economy of the device in highly polluted water environments.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A silicon carbide ceramic membrane ultrafiltration device, characterized in that, include The outer shell (1) is a circular box structure, which serves as the main support for the silicon carbide ceramic membrane ultrafiltration device. An observation window (101) is provided on the outer shell (1). The filtration mechanism is fixed inside the outer casing (1) and is used to filter water sources; The water distribution mechanism is fixed at both ends of the outer casing (1) and is used for water source diversion and wastewater merging; A water inlet mechanism is located on top of the water distribution mechanism and is used for water supply. The drainage mechanism is connected to the side wall of the outer shell (1) and the bottom of the water distribution mechanism, respectively, for discharging purified water and sewage; A backwashing mechanism, connecting the side wall of the outer casing (1) and the top of the water distribution mechanism, is used to backwash the filter mechanism.

2. The silicon carbide ceramic membrane ultrafiltration device according to claim 1, characterized in that, The filtration mechanism includes a support (2) and several silicon carbide ceramic membrane tubes (3). The support (2) is fixed to the inner wall of the outer shell (1), and the silicon carbide ceramic membrane tubes (3) are fixed on the support (2). The silicon carbide ceramic membrane tubes (3) are tube structures with nanoscale micropores evenly distributed on their side walls.

3. The silicon carbide ceramic membrane ultrafiltration device according to claim 2, characterized in that, The bracket (2) includes a circular plate (201), and the edge of the circular plate (201) is provided with a plurality of bayonets (202) and fixing frames (203) at equal intervals. The plurality of bayonets (202) and the plurality of fixing frames (203) are alternately arranged, and the bayonets (202) are matched with the silicon carbide ceramic membrane tube (3).

4. The silicon carbide ceramic membrane ultrafiltration device according to claim 1, characterized in that, The water distribution mechanism includes an upper water distributor (4) disposed at the upper end of the outer shell (1) and a lower water distributor (5) disposed at the lower end of the outer shell (1). The upper water distributor (4) and the lower water distributor (5) have the same structure. The upper water distributor (4) includes a box (401) with a circular box structure. One side of the box (401) is connected to a plurality of connecting pipes (402) that match the silicon carbide ceramic membrane tube (3). The other side of the box (401) is provided with a pipe interface (403).

5. A silicon carbide ceramic membrane ultrafiltration device according to claim 1 or 4, characterized in that, The water inlet mechanism includes a water inlet pipe (6) and a water inlet valve (7). The water inlet pipe (6) is connected to the interior of the upper water distributor (4), and the water inlet valve (7) is installed on the water inlet pipe (6). The drainage mechanism includes a sewage pipe (8) and a clean water pipe (10). The sewage pipe (8) is connected to the bottom of the lower water distributor (5) and a sewage valve (9) is provided on the sewage pipe (8). The clean water pipe (10) is connected to the side wall of the outer shell (1) and a clean water valve (11) is provided on the clean water pipe (10).

6. A silicon carbide ceramic membrane ultrafiltration device according to claim 1 or 4, characterized in that, The backwashing mechanism includes a backwashing inlet pipe (14) and a backwashing wastewater outlet pipe (12). The backwashing inlet pipe (14) is connected to the side wall of the outer casing (1). A second flushing valve (15) is provided on the backwashing inlet pipe (14). The backwashing wastewater outlet pipe (12) is connected to the top of the upper water distributor (4). A first flushing valve (13) is provided on the backwashing wastewater outlet pipe (12).

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