A nanofiltration diaphragm separation apparatus

Abstract

The utility model relates to nanofiltration membrane filtration technical field, concretely is a kind of nanofiltration vibrating membrane separation equipment, including base, the top of the base is fixedly arranged with support frame, the top middle part of support frame is fixedly arranged with transmission case, the inside of transmission case is equipped with rotary vibration mechanism, the front of transmission case is fixedly arranged with controller, the inside of support frame is equipped with filter cartridge, the bottom middle part of filter cartridge is fixedly connected with water inlet pipe, the bottom right side of filter cartridge is fixedly connected with sewage pipe, the bottom left side of filter cartridge is fixedly connected with clean water pipe. The utility model drives filter cartridge and multilayer nanofiltration membrane piece rotary vibration through rotary vibration mechanism, so that the pollution layer on nanofiltration membrane piece can be automatically stripped under the joint action of vibration and centrifugal force, it is convenient to automatically clean nanofiltration membrane piece in filter cartridge, improves the convenience and high efficiency of device.

Description

Technical Field

[0001] This utility model relates to the field of nanofiltration membrane filtration technology, specifically a nanofiltration vibrating membrane separation device. Background Technology

[0002] Nanofiltration, a pressure-driven membrane separation technology situated between ultrafiltration and reverse osmosis, leverages its precise pore size and combined size sieving with charge repulsion effects to achieve highly efficient separation of small-molecule organic matter from inorganic salts and solvents. It plays an irreplaceable role in the food industry, pharmaceutical and chemical industries, water treatment, and the resource recovery of dyeing and printing wastewater. Nanofiltration can retain target organic matter while allowing some monovalent salts to permeate, avoiding the high energy consumption of reverse osmosis and compensating for the insufficient separation precision of ultrafiltration, thus becoming a key technology for the separation and resource recovery of complex systems.

[0003] Existing devices primarily use filter cartridges equipped with nanofiltration membranes to filter wastewater. Many existing technologies resemble a concentration and purification device for nanofiltration membrane separation equipment. The structure of device CN211025424U includes a purification shell, a second limiting cover threadedly connected to the purification shell, a first limiting cover threadedly connected to the second limiting cover, a filtration mechanism inside the first limiting cover, a raw liquid inlet on the first limiting cover, and an installation cylinder inside the purification shell with an installation groove inside the installation cylinder, where a nanofiltration membrane is installed. This device avoids clogging of the micropores inside the nanofiltration membrane during the concentration process, thus improving the concentration effect. However, there are still areas for optimization in this device.

[0004] Existing devices mainly use vibrators to drive nanofiltration membrane modules to vibrate up and down at high frequency. This makes it difficult for some devices to automatically peel off the fouling layer on the nanofiltration membrane using centrifugal force, which in turn makes it difficult to automatically clean the nanofiltration membrane inside the filter cartridge, reducing the working efficiency and practicality of the device. Therefore, in order to solve the above problems, a nanofiltration vibrating membrane separation device is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a nanofiltration vibrating membrane separation device to solve the problem mentioned in the background art that the existing devices mainly use vibrators to drive the nanofiltration membrane module to vibrate up and down at high frequency, making it difficult for some devices to automatically peel off the contaminant layer on the nanofiltration membrane using centrifugal force, thus making it inconvenient to automatically clean the nanofiltration membrane in the filter cartridge.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a nanofiltration vibrating membrane separation device, comprising a base, a support frame fixedly mounted on the top of the base, a transmission box fixedly mounted on the top center of the support frame, a rotational vibration mechanism inside the transmission box, a controller fixedly mounted in front of the transmission box, a filter cartridge inside the support frame, an inlet pipe fixedly connected to the bottom center of the filter cartridge, a sewage pipe fixedly connected to the bottom right side of the filter cartridge, and a purified water pipe fixedly connected to the bottom left side of the filter cartridge.

[0007] Preferably, the filter cartridge has layers of nanofiltration membranes stacked inside, and a fastening screw runs through the inner outer ring of the filter cartridge. The fastening screws are arranged in a ring array, and the inner outer ring of the nanofiltration membrane has through holes corresponding to the fastening screws.

[0008] Preferably, the rotary vibration mechanism includes a servo motor, the bottom of which is fixedly mounted on the top left side of the transmission box, a transmission shaft is fixedly connected to the middle of the bottom of the servo motor, the bottom end of the transmission shaft passes through the transmission box and is fixedly connected to a crankshaft, and the bottom end of the crankshaft is rotatably mounted on the top of the support frame.

[0009] Preferably, a connecting rod is movably sleeved in the middle of the outer wall of the crankshaft, a rack plate is movably connected to the right end of the connecting rod, a pin is fixedly connected to the right end of the rack plate, the right end of the pin passes through the right side wall of the transmission box and is sleeved with a protective sleeve, and the left end of the protective sleeve is fixedly placed on the right side of the transmission box.

[0010] Preferably, a main gear is meshed with the front side of the outer wall of the rack plate, and a rotating shaft is fixedly inserted into the inner wall of the main gear, with the top end of the rotating shaft rotatably mounted on the top of the inner wall of the transmission box.

[0011] Preferably, the bottom end of the rotating shaft passes through the support frame and is fixedly connected to the rotating frame. The bottom two ends of the rotating frame are fixedly connected to the top of the filter cartridge. A ball bearing is fixedly installed on the inner side of the bottom plate of the support frame, and the inner wall of the ball bearing is fixedly installed in the middle of the outer wall of the filter cartridge.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes the movable connection between the support frame and the rotating frame, allowing the rotating frame to drive the filter cartridge to rotate and vibrate in both directions relative to the base support, facilitating the addition of a rotational vibration mechanism to the filter cartridge. Simultaneously, the rotational vibration mechanism drives the filter cartridge and multi-layer nanofiltration membranes to rotate and vibrate, enabling the fouling layer on the nanofiltration membranes to be automatically peeled off under the action of vibration and centrifugal force, facilitating automatic cleaning of the nanofiltration membranes inside the filter cartridge and improving the convenience and efficiency of the device. Attached Figure Description

[0013] Figure 1This is a front side perspective view of the structure of this utility model; Figure 2 This is a frontal sectional perspective view of a partial structure of this utility model; Figure 3 This is a frontal cross-sectional perspective view of a portion of the filter cartridge of this utility model; Figure 4 This is a front sectional perspective view of a portion of the transmission box and rotary vibration mechanism of this utility model; Figure 5 This is a left-side sectional perspective view of a partial structure of the transmission box and rotary vibration mechanism of this utility model.

[0014] In the diagram: 11. Base; 12. Support frame; 13. Transmission box; 14. Controller; 15. Filter cartridge; 16. Inlet pipe; 17. Sewage pipe; 18. Clean water pipe; 19. Nanofiltration membrane; 20. Fastening screw; 21. Rotating frame; 22. Ball bearing; 3. Rotary vibration mechanism; 31. Servo motor; 32. Transmission shaft; 33. Crankshaft; 34. Connecting rod; 35. Rack plate; 36. Pin; 37. Casing; 38. Main gear; 39. Rotating shaft. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-5 One embodiment provided by this utility model: A nanofiltration vibrating membrane separation device includes a base 11, a support frame 12 fixedly mounted on the top of the base 11, a transmission box 13 fixedly mounted on the top center of the support frame 12, a rotational vibration mechanism 3 inside the transmission box 13, a controller 14 fixedly mounted on the front of the transmission box 13, a filter cartridge 15 inside the support frame 12, an inlet pipe 16 fixedly connected to the bottom center of the filter cartridge 15, a sewage pipe 17 fixedly connected to the bottom right side of the filter cartridge 15, and a clean water pipe 18 fixedly connected to the bottom left side of the filter cartridge 15.

[0017] The filter cartridge 15 has layers of nanofiltration membranes 19 stacked inside. Fastening screws 20 pass through the inner outer ring of the filter cartridge 15, arranged in a ring array. The inner outer ring of the nanofiltration membranes 19 has through holes corresponding to the fastening screws 20. This design allows for the tight stacking of multiple nanofiltration membranes 19 inside the filter cartridge 15, ensuring that the flow channels of the multiple nanofiltration membranes 19 correspond one-to-one, effectively preventing wastewater from overflowing along the gaps between the nanofiltration membranes 19.

[0018] The rotary vibration mechanism 3 includes a servo motor 31. The bottom of the servo motor 31 is fixedly mounted on the top left side of the transmission box 13. A transmission shaft 32 is fixedly connected to the middle of the bottom of the servo motor 31. The bottom end of the transmission shaft 32 passes through the transmission box 13 and is fixedly connected to a crankshaft 33. The bottom end of the crankshaft 33 is rotatably mounted on the top of the support frame 12. Through this design, the servo motor 31 drives the transmission shaft 32 and the crankshaft 33 to rotate in a limited position.

[0019] A connecting rod 34 is movably fitted onto the middle of the outer wall of the crankshaft 33. A rack plate 35 is movably connected to the right end of the connecting rod 34. A pin 36 is fixedly connected to the right end of the rack plate 35. The right end of the pin 36 passes through the right side wall of the transmission case 13 and is fitted with a protective sleeve 37. The left end of the protective sleeve 37 is fixedly placed on the right side of the transmission case 13. Through this design, the crankshaft 33 drives the rack plate 35 to slide back and forth left and right via the connecting rod 34, so that the rack plate 35 drives the pin 36 to slide within the protective sleeve 37.

[0020] A main gear 38 is meshed with the front side of the outer wall of the rack plate 35. A rotating shaft 39 is fixedly inserted into the inner wall of the main gear 38, and the top end of the rotating shaft 39 is rotatably mounted on the top of the inner wall of the transmission box 13. Through this design, the rack plate 35 drives the main gear 38 and the rotating shaft 39 to rotate in both directions.

[0021] The bottom end of the rotating shaft 39 passes through the support frame 12 and is fixedly connected to the rotating frame 21. The bottom ends of the rotating frame 21 are fixedly connected to the top of the filter cartridge 15. A ball bearing 22 is fixedly installed on the inner side of the bottom plate of the support frame 12, and the inner wall of the ball bearing 22 is fixedly installed in the middle of the outer wall of the filter cartridge 15. Through this design, the rotating shaft 39 drives the rotating frame 21, the filter cartridge 15, and the multilayer nanofiltration membrane 19 to rotate in a limited position. This allows the fouling layer on the nanofiltration membrane 19 to be automatically peeled off under the action of vibration and centrifugal force, facilitating automatic cleaning of the nanofiltration membrane 19 inside the filter cartridge 15.

[0022] Working principle: When the nanofiltration membrane 19 needs to be rotated and vibrated, the servo motor 31 is first started by the controller 14. The servo motor 31 drives the transmission shaft 32 to rotate in a limited position. The transmission shaft 32 drives the crankshaft 33 to rotate in a limited position. The crankshaft 33 drives the left end of the connecting rod 34 to slide synchronously, so that the right end of the connecting rod 34 drives the rack plate 35 to slide back and forth. The rack plate 35 drives the pin 36 to slide in a limited position inside the protective sleeve 37. At the same time, the rack plate 35 drives the main gear 38 and the rotating shaft 39 to rotate in both directions. The rotating shaft 39 drives the rotating frame 21, the filter cartridge 15 and the multilayer nanofiltration membrane 19 to rotate and vibrate, realizing the rotational vibration operation of the nanofiltration membrane 19.

[0023] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A nanofiltration vibrating membrane separation device, comprising a base (11), characterized in that: A support frame (12) is fixedly mounted on the top of the base (11), and a transmission box (13) is fixedly mounted on the middle of the top of the support frame (12). The transmission box (13) is equipped with a rotary vibration mechanism (3), and a controller (14) is fixedly installed in front of the transmission box (13). The support frame (12) is equipped with a filter cylinder (15). The filter cartridge (15) is fixedly connected to the bottom center of the water inlet pipe (16), the bottom right side of the filter cartridge (15) is fixedly connected to the sewage pipe (17), and the bottom left side of the filter cartridge (15) is fixedly connected to the clean water pipe (18).

2. The nanofiltration vibrating membrane separation device according to claim 1, characterized in that: The filter cartridge (15) has layers of nanofiltration membranes (19) stacked inside. The inner outer ring of the filter cartridge (15) is penetrated by fastening screws (20), which are arranged in a ring array. The inner outer ring of the nanofiltration membrane (19) has through holes corresponding to the fastening screws (20).

3. The nanofiltration vibrating membrane separation device according to claim 1, characterized in that: The rotary vibration mechanism (3) includes a servo motor (31), the bottom of which is fixedly mounted on the top left side of the transmission box (13). A transmission shaft (32) is fixedly connected to the middle of the bottom of the servo motor (31). The bottom end of the transmission shaft (32) passes through the transmission box (13) and is fixedly connected to a crankshaft (33). The bottom end of the crankshaft (33) is rotatably mounted on the top of the support frame (12).

4. The nanofiltration vibrating membrane separation device according to claim 3, characterized in that: A connecting rod (34) is movably sleeved in the middle of the outer wall of the crankshaft (33). A rack plate (35) is movably connected to the right end of the connecting rod (34). A pin (36) is fixedly connected to the right end of the rack plate (35). The right end of the pin (36) passes through the right side wall of the transmission box (13) and is sleeved with a protective sleeve (37). The left end of the protective sleeve (37) is fixedly placed on the right side of the transmission box (13).

5. A nanofiltration vibrating membrane separation device according to claim 4, characterized in that: The front side of the outer wall of the rack plate (35) is meshed with a main gear (38), and a rotating shaft (39) is fixedly inserted into the inner wall of the main gear (38). The top end of the rotating shaft (39) is rotatably mounted on the top of the inner wall of the transmission box (13).

6. The nanofiltration vibrating membrane separation device according to claim 5, characterized in that: The bottom end of the rotating shaft (39) passes through the support frame (12) and is fixedly connected to the rotating frame (21). The bottom ends of the rotating frame (21) are fixedly connected to the top of the filter cylinder (15). A ball bearing (22) is fixedly installed on the inner side of the bottom plate of the support frame (12). The inner wall of the ball bearing (22) is fixedly installed in the middle of the outer wall of the filter cylinder (15).

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