Backwashable ultrafiltration membrane assembly for wastewater treatment

Abstract

The utility model relates to the field of ultrafiltration membrane assemblies, and discloses a backwashing ultrafiltration membrane assembly for wastewater treatment, the backwashing ultrafiltration membrane assembly comprises a pipe body and a filter cartridge, the top of the pipe body is provided with a water inlet, the inner wall of the pipe body is fixedly provided with a membrane, and the bottom end of the pipe body is communicated with a water outlet; the two ends of the filter cartridge are communicated with a backwashing pipe and a blow-off pipe respectively, the center of the backwashing pipe and the center of the blow-off pipe are located on the same straight line, a shielding net is fixedly installed on the inner wall of the filter cartridge, and the bottom end of the filter cartridge is communicated with the top of the water inlet; the bottom end of the filter cartridge is communicated with the water inlet in the top of the pipe body, a blow-off pipe is mounted on the inner wall of the filter cartridge, and the surface of the filter cartridge is communicated with a backwashing pipe and the blow-off pipe, so that wastewater entering the pipe body is preliminarily filtered by virtue of a shielding net, and clear water is introduced into the filter cartridge by virtue of the backwashing pipe after being used for a period of time; and sewage after flushing is discharged from one end of the blow-off pipe.

Description

Technical Field

[0001] The present application relates to the field of ultrafiltration membrane components, and in particular to a backwashable ultrafiltration membrane component for wastewater treatment. Background Art

[0002] Ultrafiltration is a membrane separation technology that can purify and separate solutions. The ultrafiltration membrane system is a solution separation device that uses ultrafiltration membrane filaments as the filtration medium and the pressure difference on both sides of the membrane as the driving force. The ultrafiltration membrane only allows the solvent (such as water molecules), inorganic salts and small molecular organic matter in the solution to pass through, while intercepting large molecular substances such as suspended matter, colloids, proteins and microorganisms in the solution, thereby achieving the purpose of purification or separation. It is often used for wastewater treatment. When a conventional ultrafiltration membrane assembly is used, the water inlet at one end of the ultrafiltration membrane tube is connected to the drain outlet, and a diaphragm is installed on the inner wall of the tube. After the sewage enters the tube body, it is filtered by the diaphragm and then discharged from the drain outlet at the bottom of the tube body to complete the filtration of the wastewater.

[0003] With regard to the above-mentioned related technologies, the inventors believe that when conventional ultrafiltration membranes are used for wastewater treatment, since the wastewater contains a large amount of impurities, a large number of impurities are likely to clog the ultrafiltration membrane after entering the ultrafiltration membrane, thereby requiring frequent backwashing of the ultrafiltration membrane, affecting the use effect of the ultrafiltration membrane.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In order to solve the problem that conventional ultrafiltration membranes need to be frequently cleaned when treating wastewater, the present application provides a backwashable ultrafiltration membrane assembly for wastewater treatment.

[0006] The present application provides a backwashable ultrafiltration membrane assembly for wastewater treatment using the following technical solution:

[0007] A backwashable ultrafiltration membrane assembly for wastewater treatment comprises a tube body and a filter cartridge, wherein a water inlet is provided at the top of the tube body, a diaphragm is fixedly mounted on the inner wall of the tube body, a drain outlet is connected to the bottom end of the tube body, a backwash pipe and a sewage pipe are respectively connected at both ends of the filter cartridge, the center of the backwash pipe is in the same straight line with the center of the sewage pipe, a shielding net is fixedly mounted on the inner wall of the filter cartridge, the bottom end of the filter cartridge is connected to the top of the water inlet, the center of the filter cartridge is in the same straight line with the center of the tube body, and the size of the shielding net surface is compatible with the size of the inner wall of the filter cartridge.

[0008] Preferably, the top of the shielding net is slidably connected to a cleaning frame, the top of the cleaning frame is fixedly installed with a fixing frame, the center of the fixing frame is on the same straight line as the center of the cleaning frame, and the top of the fixing frame is fixedly connected to a bearing, and the top of the bearing is rotatably installed with the inner top wall of the filter cartridge.

[0009] Preferably, a plurality of rotating blades are fixedly connected to the surface of the fixing frame, the plurality of rotating blades are distributed in a circular array with the center of the fixing frame as the axis, and the cross section of the rotating blades is a semicircular structure.

[0010] Preferably, a connecting groove is provided on the inner wall of the sewage pipe, a rotating plate is rotatably mounted on the inner wall of the connecting groove, and the size of the rotating plate surface is matched with the size of the inner wall of the connecting groove.

[0011] Preferably, the top of the rotating plate is fixedly connected to a motor via a transmission disc, and the bottom end of the motor is fixedly mounted on the surface of the filter cartridge.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] 1. By connecting the bottom end of the filter cartridge with the water inlet at the top of the tube body, a sewage pipe is installed on the inner wall of the filter cartridge, and the surface of the filter cartridge is connected with a backwash pipe and a sewage pipe, so that the waste water entering the tube body can be initially filtered with the help of the shielding net, and after a period of use, clean water is introduced into the filter cartridge with the help of the backwashing pipe, and the washed sewage is discharged from one end of the sewage pipe. A cleaning rack is rotatably installed on the top of the shielding net, and a fixed rack is installed on the top of the cleaning rack. The top of the fixed rack is rotatably connected to the inner wall of the filter cartridge with the help of a bearing, so that the cleaning rack at the bottom of the fixed rack can be easily rotated through the bearing, and the top of the shielding net is cleaned by the cleaning rack. A plurality of rotating blades are installed on the surface of the fixed rack, so that the clean water flowing out of the backwashing pipe can push the rotating blades to rotate, so that the cleaning rack at the bottom of the fixed rack can be rotated, which effectively reduces the amount of manual operation; compared with the existing technology, it effectively prevents the ultrafiltration membrane from being blocked by impurities and requiring multiple cleanings;

[0014] 2. A connecting groove can also be opened on the inner wall of the sewage pipe, and a rotating plate is rotatably installed on the inner wall of the connecting groove so that the sewage pipe can be shielded with the help of the rotating plate, and the sewage pipe can be shielded after backwashing. A motor is installed on the top of the rotating plate with the help of a transmission disk so that the rotating plate can be controlled to rotate with the help of the motor, which effectively reduces the amount of manual operation and facilitates the control of the opening and closing of the sewage pipe in conjunction with the backwashing process; the convenience of backwashing of the device is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of a backwashable ultrafiltration membrane assembly for wastewater treatment according to an embodiment of the application;

[0016] Figure 2 is a schematic diagram of the filter cartridge structure of an embodiment of the application;

[0017] Figure 3 is a side view schematic diagram of the structure of an embodiment of the application;

[0018] Figure 4 It is a schematic diagram of the structure at location A of the application embodiment.

[0019] Explanation of the reference numerals: 1. pipe body; 2. water inlet; 3. diaphragm; 4. drain outlet; 5. filter cartridge; 6. backwash pipe; 7. sewage pipe; 8. shielding net; 9. cleaning rack; 10. fixing rack; 11. rotating blade; 12. bearing; 13. connecting groove; 14. rotating plate; 15. motor. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1 —4 Provide further details of this application.

[0021] The present application discloses a backwashable ultrafiltration membrane assembly for wastewater treatment, referring to Figure 1 - Figure 2 , including an ultrafiltration membrane tube body 1. When in use, the water inlet 2 at one end of the ultrafiltration membrane tube body 1 is connected to the sewage discharge point, and the bottom end of the filter cartridge 5 is connected to the water inlet 2 at the top of the tube body 1. A sewage pipe 7 is installed on the inner wall of the filter cartridge 5, and the surface of the filter cartridge 5 is connected with a backwash pipe 6 and the sewage pipe 7. The wastewater entering the tube body 1 is preliminarily filtered with the help of a shielding net 8, and after a period of use, clean water is introduced into the filter cartridge 5 with the help of the backwash pipe 6, and the flushed sewage is discharged from one end of the sewage pipe 7, which effectively prevents the ultrafiltration membrane from being blocked by impurities and requiring multiple cleanings. The wastewater after preliminary filtration is then sent into the tube body, and a diaphragm 3 is installed on the inner wall of the tube body 1. After the sewage enters the tube body 1, the sewage is filtered with the help of the diaphragm 3 and then discharged from the drain port 4 at the bottom of the tube body 1 to complete the filtration of the wastewater.

[0022] Reference Figure 2A cleaning frame 9 is rotatably installed on the top of the shielding net 8, and a fixed frame 10 is installed on the top of the cleaning frame 9. A bearing 12 is installed on the top of the fixed frame 10. The top of the bearing 12 is rotatably connected to the inner top wall of the filter cartridge 5, and is rotatably connected to the inner wall of the filter cartridge 5 by means of the bearing 12. The cleaning frame 9 at the bottom of the fixed frame 10 is convenient to rotate through the bearing 12, and the bottom end of the cleaning frame 9 is slidably connected to the top of the shielding net 8, so that the top of the shielding net 8 is cleaned, and the cleaned stains are flushed out with clean water, avoiding the presence of difficult-to-wash stains on the top of the shielding net 8. A plurality of rotating blades 11 are installed on the surface of the fixed frame 10, and the clean water flowing out of the backwashing pipe 6 drives the rotating blades 11 to rotate, so that the cleaning frame 9 at the bottom of the fixed frame 10 is rotated, which effectively reduces the amount of manual operation and is more convenient when used.

[0023] Reference Figure 3 - Figure 4 A connecting groove 13 is provided on the inner wall of the sewage pipe 7, and a rotating plate 14 is rotatably installed on the inner wall of the connecting groove 13. The rotating plate 14 is rotated to block the inner wall of the connecting groove 13, so that the sewage pipe 7 is closed by the rotating plate 14. The sewage pipe 7 is blocked after backwashing, and when backwashing is performed, the rotating plate 14 is rotated to discharge the cleaned sewage. A motor 15 is installed on the top of the rotating plate 14 with the help of a transmission disk. The rotating plate 14 is controlled to rotate with the help of the motor 15, which effectively reduces the amount of manual operation and facilitates the control of the opening and closing of the sewage pipe 7 in conjunction with the backwashing process.

[0024] The implementation principle of the backwashable ultrafiltration membrane assembly for wastewater treatment in the embodiment of the present application is as follows: by connecting the bottom end of the filter cartridge 5 with the water inlet 2 at the top of the tube body 1, a sewage pipe 7 is installed on the inner wall of the filter cartridge 5, and the surface of the filter cartridge 5 is connected with a backwash pipe 6 and the sewage pipe 7, so that the wastewater entering the tube body 1 can be initially filtered with the help of a shielding net 8, and after a period of use, clean water is introduced into the filter cartridge 5 with the help of the backwashing pipe 6, and the washed sewage is discharged from one end of the sewage pipe 7, and the top of the shielding net 8 is rotatably installed with a filter. A cleaning frame 9 is provided with a fixing frame 10 on the top of the cleaning frame 9. The top of the fixing frame 10 is rotatably connected to the inner wall of the filter cartridge 5 by means of a bearing 12, so that the cleaning frame 9 at the bottom end of the fixing frame 10 can be conveniently rotated through the bearing 12. The top of the shielding net 8 is cleaned by the cleaning frame 9. A plurality of rotating blades 11 are provided on the surface of the fixing frame 10, so that the rotating blades 11 can be pushed to rotate by the clean water flowing out of the backwash pipe 6, thereby rotating the cleaning frame 9 at the bottom end of the fixing frame 10, effectively reducing the amount of manual operation.

[0025] A connecting groove 13 can also be opened on the inner wall of the sewage pipe 7, and a rotating plate 14 is rotatably installed on the inner wall of the connecting groove 13, so that the sewage pipe 7 can be shielded by the rotating plate 14, and the sewage pipe 7 can be shielded after backwashing. A motor 15 is installed on the top of the rotating plate 14 by means of a transmission disk, so that the rotating plate 14 can be controlled to rotate by means of the motor 15, which effectively reduces the amount of manual operation and facilitates the control of the opening and closing of the sewage pipe 7 in conjunction with the backwashing process.

[0026] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A backwashable ultrafiltration membrane assembly for wastewater treatment, comprising a tube body (1) and a filter cartridge (5), characterized in that: The top of the tube body (1) is provided with a water inlet (2), and a diaphragm (3) is fixedly mounted on the inner wall of the tube body (1); the bottom end of the tube body (1) is connected to a drain outlet (4); the two ends of the filter cartridge (5) are respectively connected to a backwashing pipe (6) and a sewage pipe (7); the center of the backwashing pipe (6) and the center of the sewage pipe (7) are on the same straight line, and a shielding net (8) is fixedly mounted on the inner wall of the filter cartridge (5).

2. The backwashable ultrafiltration membrane assembly for wastewater treatment according to claim 1, characterized in that: The bottom end of the filter cartridge (5) is connected to the top of the tube body (1), and the center of the filter cartridge (5) and the center of the tube body (1) are on the same straight line, and the size specifications of the surface of the shielding net (8) are compatible with the size specifications of the inner wall of the filter cartridge (5).

3. The backwashable ultrafiltration membrane assembly for wastewater treatment according to claim 1, characterized in that: The top of the shielding net (8) is slidably connected to a cleaning frame (9), the top of the cleaning frame (9) is fixedly mounted with a fixing frame (10), the center of the fixing frame (10) and the center of the cleaning frame (9) are on the same straight line, and the top of the fixing frame (10) is fixedly connected to a bearing (12), and the top of the bearing (12) is rotatably mounted on the inner top wall of the filter cartridge (5).

4. The backwashable ultrafiltration membrane assembly for wastewater treatment according to claim 3, characterized in that: A plurality of rotating blades (11) are fixedly connected to the surface of the fixing frame (10); the plurality of rotating blades (11) are distributed in a circular array with the center of the fixing frame (10) as the axis, and the cross section of the rotating blades (11) is a semicircular structure.

5. The backwashable ultrafiltration membrane assembly for wastewater treatment according to claim 1, characterized in that: The inner wall of the sewage pipe (7) is provided with a connecting groove (13), and a rotating plate (14) is rotatably mounted on the inner wall of the connecting groove (13), and the size of the surface of the rotating plate (14) is compatible with the size of the inner wall of the connecting groove (13).

6. The backwashable ultrafiltration membrane assembly for wastewater treatment according to claim 5, characterized in that: The top of the rotating plate (14) is fixedly connected to a motor (15) via a transmission disc, and the bottom end of the motor (15) is fixedly mounted on the surface of the filter cartridge (5).

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