Silicon carbide ceramic membrane oil-water separation device

Abstract

The utility model discloses a silicon carbide ceramic membrane oil -water separation device, including shell subassembly, shell subassembly includes cylindrical shell body, and the shell body is divided into liquid outlet chamber and separation chamber through the partition board in the upper and lower, and the lateral wall of shell body is equipped with liquid inlet, oil outlet and water outlet, and the liquid inlet and oil outlet are located below the partition board and are respectively close to the bottom end and top end of separation chamber, and the water outlet is located above the partition board and is close to the bottom of liquid outlet chamber, silicon carbide ceramic membrane subassembly, silicon carbide ceramic membrane subassembly includes the multichannel ceramic membrane pipe of longitudinal arrangement multiple. The utility model discloses through setting up silicon carbide multichannel ceramic membrane subassembly in the device, utilizes the good high temperature -resisting, corrosion -resisting and high -strength characteristics of ceramic membrane material, has realized the efficient separation to the complex oil -water mixture, has solved the problem that traditional organic membrane is easy to age, easy to pollute. Multiple ceramic membrane tubes are longitudinally arranged, and are stably installed through the connecting piece, improve the overall filtration area and separation efficiency.

Description

Technical Field

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

[0002] In the fields of industrial wastewater, petrochemicals, and ship discharge, the separation and treatment of oil-water mixtures has always been a crucial issue in environmental governance. Traditional oil-water separation devices typically employ methods such as gravity sedimentation, flotation, and centrifugal separation. Some systems have incorporated membrane separation technology, such as using polymer hollow fiber membranes or flat sheet membranes for physical filtration. While these membrane separation systems can improve treatment precision, they still suffer from problems such as poor fouling resistance, frequent membrane clogging, and high maintenance costs. Especially in high-temperature and high-oil environments, their separation efficiency and equipment stability are difficult to guarantee.

[0003] Most existing membrane oil-water separation devices have relatively simple structural designs and lack effective automatic control systems and membrane module cleaning mechanisms. This makes the membranes prone to clogging by oil during operation, severely affecting the effluent flow rate and filtration efficiency. Furthermore, some devices have poor sealing performance in membrane module installation, easily leading to liquid leakage or cross-contamination; simultaneously, their liquid flow path design is unreasonable, making it difficult to achieve precise oil-water separation and collection. These problems not only increase the burden of manual maintenance but also limit the continuous working capacity and service life of the equipment. Therefore, there is an urgent need for a new type of oil-water separation device with optimized structure and a high degree of automation to solve these problems. Utility Model Content The purpose of this invention is to address the shortcomings of existing technologies by proposing a silicon carbide ceramic membrane oil-water separation device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A silicon carbide ceramic membrane oil-water separator includes an outer shell assembly, which comprises a cylindrical outer shell. The outer shell is internally divided into an outlet chamber and a separation chamber by a partition. The side wall of the outer shell has an inlet, an oil outlet, and a drain outlet. The inlet and oil outlet are located below the partition and near the bottom and top of the separation chamber, respectively. The drain outlet is located above the partition near the bottom of the outlet chamber. The silicon carbide ceramic membrane assembly includes multiple longitudinally arranged multi-channel ceramic membrane tubes. The bottom ends of the multi-channel ceramic membrane tubes are fixed to the bottom inner wall of the separation chamber by connectors. The partition has multiple through holes, and the top ends of the multi-channel ceramic membrane tubes are inserted into the corresponding through holes. An inlet assembly consisting of an inlet pipe and an inlet pump is also included. The system comprises: a liquid inlet pipe with its two ends connected to the liquid inlet and the liquid outlet of the liquid pump, the liquid inlet of which is connected to the raw liquid storage tank via a pipe; a liquid outlet assembly, which includes a conduit connected to the oil drain and a water collection pipe connected to the drain outlet, the end of which extends into the oil collection tank and the end of which extends into the water collection tank; a three-way solenoid valve, whose three ports are connected to the drain outlet, the water collection pipe, and the backwash assembly; and an automatic control assembly, which includes an electric flow control valve, a pressure sensor, and a controller, both of which are mounted on the liquid inlet pipe, and the controller is electrically connected to the liquid pump, the three-way solenoid valve, the water pump, the electric flow control valve, and the pressure sensor.

[0005] Preferably, the backwashing assembly includes a backwashing pipe, one end of which is connected to the bottom interface of a three-way solenoid valve, and the other end of which is connected to the outlet of a water pump. The inlet of the water pump is connected to a water collection tank via a connecting pipe.

[0006] Preferably, a sealing cover is fitted on the top of the partition.

[0007] Preferably, the connector includes a connecting plate with multiple insertion holes corresponding to the through holes. The bottom of the multi-channel ceramic membrane tube is inserted into the insertion holes one by one. Several mounting holes are also provided at the edge of the connecting plate for fixing the connecting plate to the bottom inner wall of the separation chamber by bolts.

[0008] Preferably, sealing rings are installed at the connection points between the multi-channel ceramic membrane tube and the through hole, as well as between the multi-channel ceramic membrane tube and the insertion hole.

[0009] Preferably, the controller is fixedly mounted to the outer wall of the housing by bolts, and the pressure sensor is located between the electric flow control valve and the inlet, near the inlet.

[0010] This utility model has the following beneficial effects: 1. This utility model achieves efficient separation of complex oil-water mixtures by incorporating a silicon carbide multi-channel ceramic membrane module in the device. Utilizing the excellent high-temperature resistance, corrosion resistance, and high strength of ceramic membrane materials, it solves the problems of easy aging and fouling associated with traditional organic membranes. Multiple ceramic membrane tubes are arranged longitudinally and stably installed via connectors, increasing the overall filtration area and separation efficiency. This makes it suitable for high-load conditions such as oily wastewater and emulsions, ensuring long-term continuous and stable system operation. The backwashing mode uses water from the collection tank to reverse-flush the membrane tubes, preventing membrane fouling. Simultaneously, using the separated water as the flushing medium saves water resources and flushing costs, thus reducing the overall operating and maintenance costs of the device.

[0011] 2. This utility model fully considers the convenience of installation and maintenance in its structural design. The structure of a sealing cover on the top of the shell, through holes on the partition plate, and insertion holes on the connecting plate makes the installation of multi-channel ceramic membrane tubes standardized, easy to disassemble and replace. The ceramic membrane tubes can be disassembled and installed by opening the sealing cover. The sealing cover on the top of the partition plate and the sealing rings at the connection between the membrane tube and the through holes and insertion holes not only ensure the airtightness of the device and prevent liquid leakage and impurities from entering, but also avoid the problem of reduced separation efficiency due to poor sealing.

[0012] 3. The introduction of automatic control components in this invention enables intelligent operation of the device. The controller is electrically connected to the inlet pump, three-way solenoid valve, water pump, electric flow control valve, and pressure sensor to monitor and adjust the equipment's operating status in real time. The pressure sensor monitors the inlet pressure; when the pressure difference across the membrane exceeds a threshold, the controller automatically activates the three-way solenoid valve to switch to backwashing mode, promptly removing contaminants from the membrane surface, preventing membrane fouling, effectively extending membrane lifespan, ensuring long-term stable operation of the device, and reducing the frequency of manual intervention and maintenance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the internal structure of the outer shell of this utility model; Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 This is a schematic diagram of the partition structure of this utility model; Figure 5 This is a schematic diagram of the connection structure of the silicon carbide ceramic membrane module, the separator, and the connectors of this utility model. Figure 6 This is a schematic diagram of the connecting component structure of this utility model.

[0014] In the diagram: 1. Outer shell; 101. Partition plate; 101a. Through hole; 102. Liquid outlet chamber; 103. Separation chamber; 104. Liquid inlet; 105. Oil outlet; 106. Drain outlet; 107. Sealing cap; 2. Silicon carbide ceramic membrane module; 201. Multi-channel ceramic membrane tube; 3. Connector; 301. Connecting plate; 302. Insertion hole; 303. Mounting hole; 4. Liquid inlet pipe; 5. Liquid inlet pump; 6. Conduit; 7. Oil collection tank; 8. Water collection pipe; 9. Water collection tank; 10. Three-way solenoid valve; 11. Backwash pipe; 12. Water pump; 13. Connecting pipe; 14. Electric flow control valve; 15. Pressure sensor; 16. Controller; 17. Sealing ring. Detailed Implementation

[0015] 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.

[0016] Reference Figure 1-6 A silicon carbide ceramic membrane oil-water separation device includes a housing assembly, which includes a cylindrical housing 1. The housing 1 is divided into an outlet chamber 102 and a separation chamber 103 by a partition 101. The side wall of the housing 1 has an inlet 104, an oil outlet 105, and a drain 106. The inlet 104 and the oil outlet 105 are located below the partition 101 and are respectively close to the bottom and top of the separation chamber 103. The drain 106 is located above the partition 101 and is close to the bottom of the outlet chamber 102. A silicon carbide ceramic membrane assembly 2 includes multiple longitudinally arranged multi-channel ceramic membrane tubes 201. The bottom ends of the multiple multi-channel ceramic membrane tubes 201 are fixed to the bottom inner wall of the separation chamber 103 by connectors 3. The partition 101 has multiple through holes 101a, and the top ends of the multi-channel ceramic membrane tubes 201 are inserted into the through holes 101a one by one. An inlet pipe 4 The system includes an inlet assembly consisting of an inlet pump 5 and an inlet pipe 4, with the inlet port 104 and the outlet of the inlet pump 5 connected to both ends of the inlet pipe 4. The inlet of the inlet pump 5 is connected to the original liquid storage tank via a pipe. The outlet assembly includes a conduit 6 connected to the oil drain port 105 and a water collection pipe 8 connected to the drain port 106. The end of the conduit 6 extends into the oil collection tank 7, and the end of the water collection pipe 8 extends into the water collection tank 9. The three-way solenoid valve 10 has three ports connected to the drain port 106, the water collection pipe 8, and the backwash assembly, respectively. The automatic control assembly includes an electric flow control valve 14, a pressure sensor 15, and a controller 16. The electric flow control valve 14 and the pressure sensor 15 are both installed on the inlet pipe 4. The controller 16 is electrically connected to the inlet pump 5, the three-way solenoid valve 10, the water pump 12, the electric flow control valve 14, and the pressure sensor 15.

[0017] In this embodiment, the cylindrical outer shell 1 and the partition 101 form a separation space, and the liquid inlet 104, oil outlet 105 and drain outlet 106 guide the flow of fluid; the multi-channel ceramic membrane tube 201 uses hydrophilicity to achieve oil-water separation; the liquid inlet pump 5 and the liquid inlet pipe 4 transport the raw liquid; the conduit 6 and the water collection pipe 8 collect oil and water respectively; the three-way solenoid valve 10 switches the drainage and backwashing paths; the automatic control component composed of the electric flow control valve 14, the pressure sensor 15 and the controller 16 monitors the pressure, adjusts the flow rate, and starts backwashing when the membrane is blocked. All components work together to achieve efficient and stable oil-water separation.

[0018] Preferably, the backwash assembly includes a backwash pipe 11, one end of which is connected to the bottom interface of the three-way solenoid valve 10, and the other end of which is connected to the outlet of the water pump 12. The inlet of the water pump 12 is connected to the water collection tank 9 through a connecting pipe 13.

[0019] In this embodiment, the backwashing circuit, consisting of backwash pipe 11, water pump 12, and connecting pipe 13, is connected to drain outlet 106 via three-way solenoid valve 10. When the automatic control component detects abnormal membrane tube pressure, water pump 12 draws water from collection tank 9 and backwashes the multi-channel ceramic membrane tube 201 via backwash pipe 11 to promptly remove oil and impurities adhering to the membrane surface. This design not only achieves online repair of membrane fouling and extends membrane lifespan but also utilizes the separated water resources as a flushing medium, reducing operating costs. Furthermore, the automated flushing process minimizes manual intervention, ensuring continuous and efficient operation of the device.

[0020] Preferably, a sealing cover 107 is fitted on the top of the partition 101.

[0021] In this embodiment, the sealing cap 107 is installed in conjunction with the partition plate 101, bringing significant benefits to the device. First, it effectively isolates the liquid outlet chamber 102 from the external environment, preventing liquid leakage and contamination, avoiding external impurities from interfering with the oil-water separation process, and ensuring stable separation performance. Second, it enhances the overall sealing of the device, maintains stable internal pressure, ensures that the multi-channel ceramic membrane tube 201 operates under suitable pressure conditions, and improves separation efficiency. Third, during equipment maintenance, the sealing cap 107 is easy to disassemble and install, allowing for quick exposure of internal components for inspection and repair, and rapid restoration of the sealing state after maintenance, reducing downtime and further lowering maintenance costs.

[0022] Preferably, the connector 3 includes a connecting plate 301, on which a plurality of insertion holes 302 corresponding one-to-one with the through holes 101a are provided. The bottom of the multi-channel ceramic membrane tube 201 is inserted into the insertion holes 302 one-to-one. A plurality of mounting holes 303 are also provided at the edge of the connecting plate 301. The plurality of mounting holes 303 are used to fix the connecting plate 301 to the bottom inner wall of the separation chamber 103 by bolts.

[0023] In this embodiment, the optimized design of connector 3 further enhances the modularity and reliability of the device. The insertion holes 302 on the connecting plate 301 correspond one-to-one with the through holes 101a on the partition plate 101, forming a precisely positioned installation system. This ensures that the multi-channel ceramic membrane tube 201 is vertically and securely fixed within the separation chamber 103, preventing fluid short circuits or uneven stress on the membrane tubes due to installation deviations. It also facilitates overall inspection and adjustment of the entire membrane assembly, reducing maintenance difficulty and cost. In case of membrane tube blockage or damage, it allows for quick disassembly and replacement, significantly shortening maintenance time. The edge mounting holes 303 secure the connecting plate 301 to the bottom of the outer casing 1 with bolts, effectively resisting fluid impact under high-pressure operating conditions and preventing membrane tube swaying or displacement. This structure simplifies the membrane assembly installation process, shortens maintenance time, and improves separation efficiency and extends equipment lifespan through standardized positioning, further demonstrating the advanced nature of the device's structural design.

[0024] Preferably, a sealing ring 17 is installed at the connection between the multi-channel ceramic membrane tube 201 and the through hole 101a, and at the connection between the multi-channel ceramic membrane tube 201 and the insertion hole 302.

[0025] In this embodiment, a sealing ring 17 is added to the connection between the multi-channel ceramic membrane tube 201 and the through hole 101a and the insertion hole 302, which effectively improves the performance of the device. The sealing ring 17 can prevent liquid leakage from the connection, avoid the raw liquid from entering the outlet chamber 102 directly without being filtered by the membrane tube, ensure the integrity and accuracy of the oil-water separation process, and thus significantly improve the separation efficiency. At the same time, it can prevent the intrusion of external air or impurities, ensure the stability of the internal separation environment, and reduce equipment failures caused by leakage or contamination. In addition, its elastic sealing characteristics can also buffer the vibration and pressure fluctuations of the membrane tube during operation, extend the service life of the membrane tube, reduce the maintenance frequency and cost, and further enhance the reliability and economy of the device operation.

[0026] Preferably, the controller 16 is fixedly installed on the outer wall of the housing 1 by bolts, and the pressure sensor 15 is located between the electric flow control valve 14 and the inlet 104, close to the inlet 104.

[0027] In this embodiment, the controller 16 is bolted to the outer wall of the housing 1, ensuring its stability and ease of maintenance and heat dissipation. The pressure sensor 15 is installed between the electric flow control valve 14 and the inlet 104, near the inlet 104, to monitor pressure changes in the inlet pipe 4 in real time. Based on the data from the pressure sensor 15, the electric flow control valve 14 automatically adjusts the inlet flow rate to ensure stable operation of the separation system. The controller 16, through coordinated control of the pressure sensor 15 and the electric flow control valve 14, achieves precise regulation of the inlet process, preventing membrane module overload or inefficient operation, and improving the overall efficiency and safety of the oil-water separator.

[0028] 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 oil-water separation device, characterized in that, include: The outer casing assembly includes a cylindrical outer casing (1), which is divided into an outlet chamber (102) and a separation chamber (103) by a partition (101). The outer casing (1) has an inlet (104), an oil outlet (105) and a drain outlet (106) on its side wall. The inlet (104) and the oil outlet (105) are located below the partition (101) and are close to the bottom and top of the separation chamber (103) respectively. The drain outlet (106) is located above the partition (101) and close to the bottom of the outlet chamber (102). The silicon carbide ceramic membrane module (2) includes multiple longitudinally arranged multi-channel ceramic membrane tubes (201). The bottom ends of the multiple multi-channel ceramic membrane tubes (201) are fixed to the bottom inner wall of the separation chamber (103) by connectors (3). The partition (101) has multiple through holes (101a). The top ends of the multi-channel ceramic membrane tubes (201) are inserted into the through holes (101a) one by one. The liquid inlet assembly consists of a liquid inlet pipe (4) and a liquid inlet pump (5). The two ends of the liquid inlet pipe (4) are respectively connected to the liquid inlet port (104) and the liquid outlet of the liquid inlet pump (5). The liquid inlet of the liquid inlet pump (5) is connected to the original liquid storage container through a pipe. The liquid outlet assembly includes a conduit (6) connected to the oil outlet (105) and a water collection pipe (8) connected to the drain outlet (106). The end of the conduit (6) extends into the oil collection tank (7), and the end of the water collection pipe (8) extends into the water collection tank (9). A three-way solenoid valve (10) has three ports that are respectively connected to a drain outlet (106), a water collection pipe (8), and a backwash assembly; An automatic control assembly includes an electric flow control valve (14), a pressure sensor (15), and a controller (16). The electric flow control valve (14) and the pressure sensor (15) are both installed on the inlet pipe (4). The controller (16) is electrically connected to the inlet pump (5), the three-way solenoid valve (10), the water pump (12), the electric flow control valve (14), and the pressure sensor (15).

2. The silicon carbide ceramic membrane oil-water separator according to claim 1, characterized in that, The backwash assembly includes a backwash pipe (11), one end of which is connected to the bottom interface of a three-way solenoid valve (10), and the end of which is connected to the outlet of a water pump (12). The inlet of the water pump (12) is connected to a water collection tank (9) via a connecting pipe (13).

3. The silicon carbide ceramic membrane oil-water separator according to claim 1, characterized in that, A sealing cap (107) is fitted on the top of the partition (101).

4. The silicon carbide ceramic membrane oil-water separator according to claim 1, characterized in that, The connector (3) includes a connecting plate (301), on which a plurality of insertion holes (302) are provided corresponding to the through holes (101a). The bottom of the multi-channel ceramic membrane tube (201) is inserted into the insertion holes (302) in a corresponding manner. A plurality of mounting holes (303) are also provided at the edge of the connecting plate (301). The plurality of mounting holes (303) are used to fix the connecting plate (301) to the bottom inner wall of the separation chamber (103) by bolts.

5. The silicon carbide ceramic membrane oil-water separator according to claim 4, characterized in that, A sealing ring (17) is installed at the connection between the multi-channel ceramic membrane tube (201) and the through hole (101a) and the connection between the multi-channel ceramic membrane tube (201) and the insertion hole (302).

6. The silicon carbide ceramic membrane oil-water separator according to claim 1, characterized in that, The controller (16) is fixedly installed on the outer wall of the housing (1) by bolts, and the pressure sensor (15) is located between the electric flow control valve (14) and the inlet (104), close to the inlet (104).

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