Fluid treatment membrane device

Abstract

The invention relates to a fluid treatment membrane device which comprises a shell, a plurality of inner cylinders are arranged in a cavity of the shell and sequentially arranged in a sleeved mode, a fluid channel for fluid to flow through is formed between every two adjacent inner cylinders, and a circulation gap for fluid to flow through is formed between the inner cylinder on the outermost side of the multiple inner cylinders and the shell; the multiple partition plates are distributed on the inner wall of the shell at intervals, and each partition plate is obliquely arranged relative to the center line of the cavity; the multiple supporting frames are arranged on the outer wall of the first inner cylinder at intervals, the contact faces between the multiple partition plates and the multiple supporting frames are located on a preset cylindrical face, and the axis of the preset cylindrical face coincides with the center line of the cavity. The power driving mechanism is in driving connection with the multiple inner cylinders so as to drive the multiple inner cylinders to rotate around the center line of the cavity, and the rotating directions of every two adjacent inner cylinders are opposite. According to the fluid treatment membrane device, the technical problem of non-uniform distribution of filtrate in the prior art is solved, the treatment effect is improved, and the stability of the device is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of membrane components, and in particular to a fluid processing membrane device. Background Art

[0002] As a highly efficient separation technology, nanofiltration membrane has been widely used in the field of water treatment, especially in wastewater purification, industrial water recycling and drinking water safety. The pore size of nanofiltration membrane is between reverse osmosis and ultrafiltration. It can effectively intercept organic matter, color substances and some multivalent ions with molecular weights between hundreds and thousands, while allowing water molecules and some monovalent ions to pass through. This characteristic makes it have significant advantages in removing organic pollutants and color from surface water, softening groundwater hardness, concentrating fruit juice and separating drugs.

[0003] However, existing nanofiltration membrane assemblies still have certain limitations in practical applications. Among them, the unevenness of filtrate passing through the filter membrane is a common problem. Due to the uneven structure of the filter membrane and the uneven distribution of fluid, a part of the filter membrane may be overused, resulting in frequent cleaning needs, while the other part is not fully utilized, reducing the overall nanofiltration efficiency and the working life of the filter membrane. In addition, the uneven fluid distribution may also cause local concentrations to be too high or too low, affecting the treatment effect and device stability.

[0004] Therefore, how to design a new type of nanofiltration membrane assembly so that it can evenly distribute the filtrate during wastewater treatment, fully utilize the filter membrane, extend the service life of the filter membrane, and reduce the cleaning frequency has become an important direction of current research. Summary of the invention

[0005] The present application provides a fluid treatment membrane device to solve the technical problem in the prior art that the unevenness of filtrate passing through the filter membrane leads to insufficient use of the filter membrane, affecting the treatment effect and the stability of the device.

[0006] In order to solve the above technical problems, the present application provides a fluid treatment membrane device, comprising:

[0007] A shell having a cavity therein;

[0008] A plurality of inner cylinders, which are arranged in the cavity of the shell and are arranged in sequence, a fluid channel for fluid to flow through is formed between two adjacent inner cylinders, and a flow gap for fluid to flow through is formed between the outermost inner cylinder of the plurality of inner cylinders and the shell;

[0009] A plurality of baffles are distributed at intervals on the inner wall of the shell, and each baffle is arranged obliquely relative to the center line of the cavity;

[0010] A plurality of support frames are arranged at intervals on the outer wall of the first inner tube, the contact surfaces between the plurality of partitions and the plurality of support frames are located on a predetermined cylindrical surface, and the axis of the predetermined cylindrical surface coincides with the center line of the cavity;

[0011] The power driving mechanism is drivingly connected to the multiple inner cylinders to drive the multiple inner cylinders to rotate around the center line of the cavity and make the rotation directions of two adjacent inner cylinders opposite.

[0012] Furthermore, the multiple inner cylinders include a first inner cylinder, a second inner cylinder and a third inner cylinder, the first inner cylinder, the second inner cylinder and the third inner cylinder are nested in sequence, and a flow gap is formed between the first inner cylinder and the shell.

[0013] Furthermore, the first inner cylinder, the second inner cylinder and the third inner cylinder are respectively equipped with an internal gear, a double gear and an external gear, the power drive mechanism includes a motor, a first gear and a second gear, the output shaft of the motor is coaxially connected to the first gear, the first gear is respectively meshed with the internal gear and the double gear, and the second gear is respectively meshed with the double gear and the external gear, so as to realize the first inner cylinder and the third inner cylinder rotating in the same direction, and the second inner cylinder rotating in the opposite direction to the first inner cylinder.

[0014] Furthermore, the fluid treatment membrane device also includes a reflux structure, which includes a reflux groove opened at one end of the shell and a reflux cover arranged on the outside of the shell and connected to the reflux groove, so that the incompletely filtered fluid flows into the reflux cover through the reflux groove.

[0015] Furthermore, the reflux groove is annular, and is arranged around the center line of the cavity of the shell. The reflux groove is arranged at one end of the shell close to the power drive mechanism.

[0016] Furthermore, the inner wall of the shell is provided with a plurality of inclined plates, and at least one inclined plate is provided between two adjacent partitions. The end surface of one end of the inclined plate is used to form a reflux groove, and the height of the inclined plate gradually decreases in the direction away from the reflux groove; the height direction of the inclined plate is the radial direction of the cavity of the shell.

[0017] Furthermore, a stopper is provided between the shell and the return cup, and the stopper contacts the outer wall of the first inner cylinder which is the outermost inner cylinder among the plurality of inner cylinders.

[0018] Furthermore, the support assembly also includes a plurality of first support frames and second support frames in a wavy shape, one end of each first support frame is installed on the outer wall of the second inner cylinder through a first fixing block, the second end of each first support frame is a free end, each first support frame extends along the extension direction of the second inner cylinder, and the plurality of first support frames are arranged around the second inner cylinder; one end of each second support frame is installed on the outer wall of the third inner cylinder through a second fixing block, the second end of each second support frame is a free end, each second support frame extends along the extension direction of the third inner cylinder, and the plurality of second support frames are arranged around the third inner cylinder.

[0019] Further, a plurality of first flow blocks are arranged on the outer side of the second inner tube, each of which extends along the extension direction of the second inner tube, and a cross section of each of which is perpendicular to the extension direction is surrounded by three first outer peripheries, and one first outer periphery is connected to the outer wall of the second inner tube; and / or a plurality of second flow blocks are arranged on the outer side of the third inner tube, each of which extends along the extension direction of the third inner tube, and a cross section of each of which is perpendicular to the extension direction is surrounded by three second outer peripheries, and one second outer periphery is connected to the outer wall of the third inner tube.

[0020] Furthermore, an end cover is provided at one end of the shell, and the end cover is provided with a liquid outlet pipe and a through hole for at least part of the power drive mechanism to pass through.

[0021] The fluid treatment membrane device provided by the present application mainly includes core components such as a shell, an inner cylinder group, a partition, a support frame and a power drive mechanism. A closed cavity is formed inside the shell to accommodate the inner cylinder group and the fluid in the fluid treatment process. The inner cylinder group is composed of a plurality of inner cylinders, which are nested in sequence, and a fluid channel is formed between two adjacent inner cylinders. A flow gap is formed between the outermost inner cylinder and the shell to facilitate the introduction and discharge of the fluid. A plurality of partitions are evenly distributed on the inner wall of the shell and are tilted relative to the center line of the cavity. This inclined design, combined with the specific contact method between the partition and the support frame of the first inner cylinder, can effectively guide the fluid to form a uniform flow inside the cavity and prevent the fluid from being excessively concentrated or forming eddies in certain areas. The fluid treatment membrane device of the present application not only solves the technical problem of uneven distribution of filtrate in the prior art, but also achieves the improvement of treatment effect and the enhancement of device stability through a series of innovative designs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 A three-dimensional schematic diagram of an embodiment of a fluid treatment membrane device according to the present invention is shown;

[0024] Figure 2 A schematic diagram of a structural split perspective view of an embodiment of a fluid treatment membrane device according to the present invention is shown;

[0025] Figure 3 An embodiment of a fluid treatment membrane device according to the present invention is shown. Figure 2 A partial enlarged view of the middle A;

[0026] Figure 4An embodiment of a fluid treatment membrane device according to the present invention is shown. Figure 2 A partial enlarged view of point B in the middle;

[0027] Figure 5 A longitudinal cross-sectional view of an embodiment of a fluid treatment membrane device according to the present invention is shown;

[0028] Figure 6 An embodiment of a fluid treatment membrane device according to the present invention is shown. Figure 5 A partial enlarged view of point C in the middle;

[0029] Figure 7 An embodiment of a fluid treatment membrane device according to the present invention is shown. Figure 5 Partial cross-sectional view from another angle.

[0030] The above drawings include the following reference numerals:

[0031] 1. End cover; 2. Shell; 3. Reflux cover; 4. First inner tube; 5. Second inner tube; 6. First fixed block; 7. Second fixed block; 8. Third inner tube; 9. Through hole; 10. Liquid outlet pipe; 11. Mounting frame; 12. Motor; 13. First gear; 14. Second gear; 15. Partition plate; 16. Inclined plate; 17. Internal meshing gear; 18. First support frame; 19. Double meshing gear; 20. Support frame; 21. First flow block; 22. External meshing gear; 23. Liquid inlet hole; 24. Second flow block; 25. Second support frame; 26. Reflux groove; 27. Baffle plate; 28. Block. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0034] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0035] The present application provides a fluid treatment membrane device, comprising: a shell 2 having a cavity inside; a plurality of inner cylinders, which are arranged in the cavity of the shell 2 and are sequentially sleeved between two adjacent inner cylinders to form a fluid channel for fluid to flow through; a flow gap for fluid to flow through is formed between the outermost inner cylinder of the plurality of inner cylinders and the shell; a plurality of partitions 15 are distributed at intervals on the inner wall of the shell 2, and each partition is inclined relative to the center line of the cavity; a plurality of support frames 20 are arranged at intervals on the outer wall of the first inner cylinder 4, and the contact surfaces between the plurality of partitions 15 and the plurality of support frames are located on a predetermined cylindrical surface, and the axis of the predetermined cylindrical surface coincides with the center line of the cavity; a power drive mechanism is drivingly connected to the plurality of inner cylinders to drive the plurality of inner cylinders to rotate around the center line of the cavity and to make the rotation directions of the two adjacent inner cylinders opposite.

[0036] The fluid treatment membrane device of the present application can significantly enhance the turbulence effect of the fluid in the fluid channel and improve the filtration efficiency and cleaning effect by making the rotation directions of adjacent inner cylinders opposite. The technical problem of uneven distribution of filtrate in the prior art is solved, and through a series of innovative designs, the treatment effect is improved and the stability of the device is enhanced.

[0037] In the above embodiment, it mainly includes core components such as shell 2, inner cylinder group, partition 15, support frame 20 and power drive mechanism. A closed cavity is formed inside the shell 2 to accommodate the inner cylinder group and fluid in the fluid treatment process. The inner cylinder group is composed of multiple inner cylinders, which are nested in sequence, and a fluid channel is formed between two adjacent inner cylinders, and a flow gap is formed between the outermost inner cylinder and the shell 2, which is convenient for the introduction and discharge of the fluid. Multiple partitions 15 are evenly distributed on the inner wall of the shell 2 and are tilted relative to the center line of the cavity. This tilted design combined with the specific contact mode between the partition 15 and the support frame 20 of the first inner cylinder 4 can effectively guide the fluid to form a uniform flow inside the cavity, preventing the fluid from excessively concentrating or forming eddy currents in certain areas. By making the rotation direction of adjacent inner cylinders opposite, the fluid forms a reciprocating turbulence in the fluid channel, which enhances the contact between the fluid and the filter membrane and improves the filtering effect. At the same time, this design also helps to clean the impurities on the surface of the inner cylinder to prevent the membrane from clogging and extend the service life of the device. In practical applications, this device can effectively treat high-turbidity water and improve water quality. It is suitable for industrial wastewater treatment, urban sewage treatment, seawater desalination and other scenarios and has extremely high practical value.

[0038] Specifically, the plurality of inner cylinders include a first inner cylinder 4, a second inner cylinder 5 and a third inner cylinder 8. The first inner cylinder 4, the second inner cylinder 5 and the third inner cylinder 8 are nested in sequence to form a flow gap between the first inner cylinder and the shell. The plurality of inner cylinders in the device include a first inner cylinder 4, a second inner cylinder 5 and a third inner cylinder 8 nested in sequence. A flow gap is formed between the first inner cylinder 4 and the shell 2. Such a design increases the path of fluid processing and improves the accuracy and efficiency of filtration. The flow gap between the first inner cylinder 4 and the shell 2 is maintained by a plurality of partitions 15 and a plurality of support frames 20. The contact surface of the partition 15 and the support frame 20 is designed on a predetermined cylindrical surface, and the axis of the cylindrical surface coincides with the center line of the cavity of the shell 2. This design ensures the uniform distribution of the flow gap, so that the flow of the fluid between the first inner cylinder 4 and the shell 2 is more uniform, avoiding the situation where the local flow rate is too high or too low. Through this nested design, the fluid flows between the multi-layer inner cylinders, increases the processing path, improves the filtration accuracy, and is particularly suitable for industrial applications with high requirements for fluid purity, such as semiconductor manufacturing, biopharmaceuticals, etc. In semiconductor manufacturing, the purity of the fluid directly affects the product quality. This device can effectively remove tiny particles and impurities in the fluid through sequential filtration of multiple layers of inner cylinders, meeting the stringent requirements of semiconductor manufacturing for fluid purity, improving production efficiency and reducing production costs, which plays an important role in promoting the development of the semiconductor industry.

[0039] In the above embodiment, the fluid first enters through the inlet of the housing 2, and then begins the processing process in the flow gap between the housing 2 and the first inner cylinder 4. The nested structure of the first inner cylinder 4, the second inner cylinder 5 and the third inner cylinder 8 enables the fluid to flow in the fluid channel formed between the multiple layers of inner cylinders. Each time the fluid passes through an inner cylinder, the impurities and pollutants in the fluid have the opportunity to be further filtered and removed. After the fluid passes through the flow gap between the first inner cylinder 4 and the housing 2, the first inner cylinder 4 starts to rotate due to the action of the power drive mechanism. During the rotation process, the fluid is guided to the fluid channel between the second inner cylinder 5 and the first inner cylinder 4. Through the reverse rotation of the second inner cylinder 5, the fluid forms a reciprocating turbulent flow, which further improves the filtering efficiency and cleaning effect. Subsequently, the fluid enters the fluid channel between the third inner cylinder 8 and the second inner cylinder 5, and after further processing by the third inner cylinder 8, it is finally discharged from the outlet of the third inner cylinder 8. During this process, the multi-layer design of the fluid channel makes the fluid treatment more thorough. At the same time, by controlling the rotation speed and direction of the inner cylinder, it can be optimized for different processing needs, such as increasing the turbulence effect of the fluid to remove tiny particles, or adjusting the flow rate to adapt to fluids of different concentrations.

[0040] Specifically, the first inner cylinder 4, the second inner cylinder 5 and the third inner cylinder 8 are respectively equipped with an internal meshing gear 17, a double meshing gear 19 and an external meshing gear 22, and the power drive mechanism includes a motor 12, a first gear 13 and a second gear 14. The output shaft of the motor is coaxially connected with the first gear, the first gear is respectively meshed with the internal meshing gear 17 and the double meshing gear 19, and the second gear is respectively meshed with the double meshing gear 19 and the external meshing gear 22, so as to realize the first inner cylinder 4 and the third inner cylinder 8 rotating in the same direction, and the second inner cylinder 5 rotating in the opposite direction to the first inner cylinder. This gear transmission system ensures the precise control of the rotation of the inner cylinder, improves the stability and reliability of fluid processing, and is suitable for occasions where precise control of the fluid processing process is required, such as laboratory research, precision instrument cleaning, etc. In laboratory research, the processing of fluids requires precise control to ensure the accuracy and repeatability of experimental results.

[0041] The device realizes precise control of the rotation speed and direction of the inner cylinder through the gear transmission system, which is helpful for the uniform treatment of the experimental fluid, improves the reliability of the experimental results, and plays an important supporting role in scientific research and experimental teaching. The output shaft of the motor 12 is coaxially connected with the first gear 13, and the first gear 13 drives the internal meshing gear 17 by rotation, thereby driving the first inner cylinder 4 to rotate. At the same time, the first gear 13 is also meshed with the double meshing gear 19, and the intermediate shaft of the double meshing gear 19 rotates to drive the second gear 14 meshed with it to rotate, and the second gear 14 then drives the third inner cylinder 8 to rotate by meshing with the external meshing gear 22. Since the first gear 13 directly drives the internal meshing gear 17 and the double meshing gear 19, and the double meshing gear 19 indirectly drives the second gear 14 and the external meshing gear 22, the number of teeth of the double meshing gear 19 can be set to be different from the number of teeth of the internal meshing gear 17 and the external meshing gear 22, thereby controlling the second inner cylinder 5 to rotate in the opposite direction to the first inner cylinder 4 and the third inner cylinder 8. Specifically, when the motor 12 is started, the first gear 13 rotates accordingly, and the first inner cylinder 4 starts to rotate through the engagement with the internal gear 17; at the same time, through the engagement with the double-mesh gear 19, the double-mesh gear 19 drives the second gear 14 meshing with it to rotate, and then through the engagement of the second gear 14 with the external gear 22, the third inner cylinder 8 is driven to rotate.

[0042] Due to the special design of the double-meshing gear 19, the meshing mode between the double-meshing gear 19 and the first gear 13 and the second gear 14 is different, so that the rotation direction of the second inner cylinder 5 is opposite to the rotation direction of the first inner cylinder 4 and the third inner cylinder 8. This setting of the rotation direction can significantly enhance the turbulence effect in the fluid treatment process, improve the filtration efficiency, reduce the deposition and blockage of the fluid on the surface of the inner cylinder, and extend the service life of the membrane assembly.

[0043] Specifically, the fluid treatment membrane device also includes a reflux structure, which includes a reflux groove 26 opened at one end of the shell 2, and a reflux cover 3 arranged on the outside of the shell 2 and connected to the reflux groove, so that the incompletely filtered fluid flows into the reflux cover through the reflux groove. The reflux groove is opened at one end of the shell 2, and its main function is to collect the fluid that fails to pass through the filter membrane at one time, that is, the incompletely filtered fluid. These fluids, because they fail to achieve the required filtering effect during the initial passage, will be guided to the reflux groove.

[0044] The design of the reflux hood helps improve processing efficiency and cleaning effects, and is especially suitable for scenarios with strict requirements on the thoroughness of fluid processing, such as drinking water purification and medical equipment disinfection. The combination of the reflux tank and the reflux hood forms a closed circulation path, allowing fluids that do not meet the filtration standards to return to the processing process without being wasted or discharged. This design increases the number of fluid cycles and improves filtration accuracy. It is particularly effective for processing high-viscosity fluids or fluids containing a large number of suspended particles, such as in fine chemicals and food processing. It can effectively avoid fluid short circuits and improve fluid processing uniformity, thereby improving product quality and reducing energy consumption. At the same time, it avoids the direct discharge of untreated fluids, reduces potential pollution to the environment, and embodies the concepts of environmental protection and resource conservation.

[0045] The design of the reflux structure increases the number of fluid cycles and improves the thoroughness of filtration. It is particularly effective for treating fluids containing high concentrations of pollutants, such as wastewater treatment, oil-water separation, etc. In the field of wastewater treatment, the concentration of pollutants in the fluid may be very high, and it is often difficult to achieve the ideal purification effect with one filtration. The design of the reflux structure allows the fluid to be filtered multiple times in a cycle, greatly improving the purification efficiency and reducing pollutant emissions, which is of great significance for environmental protection and resource recovery.

[0046] Specifically, the reflux groove 26 is annular, and is arranged around the center line of the cavity of the shell, and is arranged at one end of the shell near the power drive mechanism. The reflux groove is designed to be annular, and surrounds the center line of the cavity of the shell, which ensures that the unfiltered fluid can be evenly distributed, avoids local overload, and creates conditions for subsequent circulation processing. Especially when processing fluids containing high concentrations of pollutants, the presence of the reflux groove ensures that the fluid can be circulated and filtered multiple times, greatly improving the purification efficiency and reducing pollutant emissions, which is of great significance for environmental protection and resource recovery.

[0047] The reflux hood is arranged on the outside of the housing 2 and is connected to the reflux groove 26. Its function is to collect the fluid flowing out of the reflux groove and redirect it back into the fluid treatment cycle. This means that the incompletely filtered fluid will not be discharged directly, but will re-enter the treatment process through the reflux hood, thereby increasing the treatment time of the fluid in the membrane assembly and further improving the thoroughness of the filtration. The design of the annular reflux groove ensures the uniform distribution of the fluid, avoids local overload, improves the treatment efficiency and service life of the entire device, and is particularly suitable for large-scale fluid treatment systems such as urban sewage treatment, industrial wastewater purification, etc.

[0048] The design of the annular reflux groove allows the fluid to circulate evenly in the shell, avoiding the problem of uneven treatment caused by local fluid flow being too fast or too slow. Especially in urban sewage treatment and industrial wastewater purification, this evenly distributed fluid circulation has a significant impact on improving treatment efficiency and reducing energy consumption, and makes an important contribution to environmental protection and energy conservation and emission reduction.

[0049] Specifically, the inner wall of the shell is provided with a plurality of inclined plates 16, and at least one inclined plate 16 is provided between two adjacent partitions 15. The end surface of one end of the inclined plate 16 is used to enclose the reflux groove 26. The height of the inclined plate 16 gradually decreases in the direction away from the reflux groove 26, wherein the height direction of the inclined plate 16 is the radial direction of the cavity of the shell 2. The design of the inclined plate 16 enables the fluid to flow along the guiding direction of the inclined plate after entering the circulation gap between the shell and the first inner cylinder 4, thereby increasing the radial flow path of the fluid, ensuring that the fluid is evenly distributed in the entire circulation gap, avoiding excessive concentration of the fluid in certain areas, and improving the uniformity of fluid treatment.

[0050] The gradually decreasing inclination angle and height of the inclined plate 16 help to form a turbulent effect in the fluid channel. This turbulence can enhance the contact between the fluid and the filter membrane and improve the filtration efficiency. Especially in industrial wastewater treatment, water purification and chemical fluid treatment, the formation of turbulence helps to remove suspended particles and soluble substances, and improve the cleanliness and service life of the filter membrane. The end surface of one end of the inclined plate 16 is used to enclose a reflux groove 26 to ensure that the fluid that is not completely filtered can be redirected to the reflux groove, which increases the processing time of the fluid and improves the purification efficiency.

[0051] The presence of the reflux groove prevents part of the fluid from accumulating at one end of the shell, preventing local concentration changes and adverse effects on fluid processing. The partition 15 is evenly distributed on the inner wall of the shell 2, and cooperates with the support frame 20 to maintain the flow gap between the first inner cylinder 4 and the shell 2, ensuring the uniform flow of the fluid between the inner cylinder and the shell, and improving the efficiency and effect of fluid processing. The partition 15 also plays a supporting role, especially under high-speed rotation conditions, they ensure the stable rotation of the inner cylinder, prevent deformation or vibration of the shell, and ensure the stable operation of the entire device. The reflux groove 26 mainly collects fluids that fail to pass through the filter membrane at one time, that is, fluids that are not completely filtered, to ensure that these fluids can enter the processing cycle again, increase the processing time of the fluid, and improve the thoroughness of the filtration.

[0052] The coordinated design of the inclined plate 16, the partition plate 15 and the reflux groove 26 ensures the uniform distribution and circulation of the fluid in the shell cavity, avoids local overload and fluid short circuit, and improves the uniformity and efficiency of fluid treatment. The height of the inclined plate 16 gradually decreases, which helps the flow velocity of the fluid to gradually increase in the direction away from the reflux groove 26. This design can make up for the difference in utilization rate caused by the different order of fluid contacting the inner cylinder side wall, ensuring the efficiency and effect of the entire treatment process.

[0053] The design of the inclined plate helps to guide and distribute the fluid, enhances the turbulence effect of the fluid, and improves the filtration efficiency. It is especially suitable for occasions where it is necessary to enhance the turbulence of the fluid to improve the filtration effect, such as the treatment of high-viscosity fluids, the removal of suspended particles, etc. The design of the inclined plate enhances the turbulence effect of the fluid by guiding the flow direction of the fluid, and helps to remove suspended particles. Especially in the treatment of high-viscosity fluids, such as the application of industries such as petroleum, chemical industry, and food processing, this design can effectively improve the processing efficiency of the fluid, reduce energy consumption, improve product quality, and has a significant effect on improving industrial production efficiency and reducing production costs.

[0054] Specifically, a block 28 is provided between the shell 2 and the reflux cover 3, and the block 28 contacts the outer wall of the outermost inner cylinder among the multiple inner cylinders. The design of the block can prevent the fluid from short-circuiting directly between the reflux cover and the shell, ensuring that the fluid passes through a complete processing path, improving the filtration efficiency and cleaning effect, and is suitable for scenarios with strict requirements on the thoroughness of fluid treatment, such as drinking water purification, medical equipment disinfection, etc. The design of the block ensures that the fluid passes through a complete processing path in the shell, avoiding fluid short-circuiting and improving the thoroughness and efficiency of the treatment. In drinking water purification and medical equipment disinfection, this design can effectively remove bacteria and impurities in the fluid and improve the purity of the fluid, which has an important impact on protecting human health and improving the safety of medical equipment.

[0055] Specifically, the support assembly further includes a plurality of first support frames 18 in a wavy shape, one end of each first support frame 18 is mounted on the outer wall of the second inner cylinder 5 through the first fixing block 6, the second end of each first support frame 18 is a free end, each first support frame 18 extends along the extension direction of the second inner cylinder 5, and the plurality of first support frames 18 are arranged around the second inner cylinder 5; the support assembly further includes a second support frame 25 in a wavy shape, one end of each second support frame 25 is mounted on the outer wall of the third inner cylinder 8 through the second fixing block 7, the second end of each second support frame 25 is a free end, each second support frame 25 extends along the extension direction of the third inner cylinder 8, and the plurality of second support frames 25 are arranged around the third inner cylinder 8. The first support frame 18 is mounted on the outer wall of the second inner cylinder 5 through the first fixing block 6, and the support frames extend along the extension direction of the second inner cylinder 5 and are arranged around the second inner cylinder 5. This design ensures the stability and structural support of the second inner cylinder 5 during rotation, avoids deformation or vibration that may occur under high-speed rotation, and ensures the continuity and stability of fluid processing.

[0056] The wavy first support frame 18 is conducive to guiding the fluid to form a reciprocating turbulence when the fluid enters the fluid channel between the first inner cylinder 4 and the second inner cylinder 5, thereby increasing the contact area and contact frequency between the fluid and the nanofiltration membrane on the surface of the second inner cylinder 5, thereby enhancing the filtering effect, and also helping to clean the impurities on the surface of the inner cylinder to prevent the membrane from clogging. When the motor 12 drives the first inner cylinder 4 and the third inner cylinder 8 to rotate in the same direction, and the second inner cylinder 5 rotates in the opposite direction, the wavy design of the first support frame 18 can ensure the uniform distribution of the fluid under the steering action of different inner cylinders, avoiding the reduction of the filtering efficiency caused by the uneven distribution of the fluid. The second support frame 25 is installed on the outer wall of the third inner cylinder 8 through the second fixing block 7, and also extends along the extension direction of the third inner cylinder 8, and is arranged around the third inner cylinder 8. This provides additional support for the third inner cylinder 8 to ensure its stability during rotation. The wavy second support frame 25 is similar to the first support frame 18, and is designed to be wavy. This design also plays a role in guiding the fluid to form turbulence during the fluid treatment process.

[0057] When the fluid enters the fluid channel between the second inner cylinder 5 and the third inner cylinder 8, the second support frame 25 helps to further even out the fluid distribution, while enhancing the interaction between the fluid and the nanofiltration membrane on the surface of the third inner cylinder 8, thereby improving the filtration efficiency and cleaning effect. The presence of the second support frame 25, in conjunction with the drive of the motor 12, makes the rotation of the third inner cylinder 8 more stable. The wavy design is opposite to the rotation direction of the inner cylinder, which helps to form a dense fluid contact between adjacent inner cylinders, thereby improving the efficiency of the entire nanofiltration process. The wavy design of the first support frame 18 and the second support frame 25, combined with the guidance of the partition 15 and the inclined plate 16, and the rotation of the inner cylinder, jointly ensure that the fluid can form a uniform distribution and circulation between the multiple layers of the inner cylinder after entering the cavity of the shell 2, avoiding excessively high or low local flow rates, and ensuring the uniformity and efficiency of fluid treatment.

[0058] Specifically, a plurality of first baffle blocks 21 are arranged on the outside of the second inner tube 5, each of which extends along the extension direction of the second inner tube 5, and a cross section of each first baffle block 21 perpendicular to its extension direction is surrounded by three first outer peripheries, and one first outer periphery is connected to the outer wall of the second inner tube; a plurality of second baffle blocks 24 are arranged on the outside of the third inner tube 8, each of which extends along the extension direction of the third inner tube 8, and a cross section of each second baffle block 24 perpendicular to its extension direction is surrounded by three second outer peripheries, and one second outer periphery is connected to the outer wall of the third inner tube 8.

[0059] Among the three first outer peripheries of the first flow block 21, one is in close contact with the outer wall of the second inner cylinder 5, and the other two outer peripheries protrude into the fluid channel between the second inner cylinder 5 and the first inner cylinder 4. This design changes the flow path of the fluid in the channel, avoids the fluid from forming a single straight line flow when contacting the second inner cylinder 5, and instead generates a more complex fluid movement, which is conducive to forming a uniform turbulent effect, thereby improving the contact efficiency between the fluid and the nanofiltration membrane on the surface of the second inner cylinder 5.

[0060] The cross section of the first baffle block 21 is designed to be triangular, and this shape can reduce the probability of the fluid forming vortices under high-speed rotation. The reduction of vortices helps to distribute the fluid more evenly, improves the filtering effect, and at the same time reduces the resistance of the fluid to the second inner cylinder 5, indirectly reducing the energy consumption during the operation of the device.

[0061] When the first inner cylinder 4 and the third inner cylinder 8 rotate in the same direction, and the second inner cylinder 5 rotates in the opposite direction, the specific design of the first baffle block 21 can be combined with the rotation direction of the inner cylinder to further guide the fluid to form a reciprocating flow. This flow pattern enhances the interaction between the fluid and the filter membrane, and improves the filtration efficiency and cleaning effect. The synergistic effect of the second baffle block 24 and the third inner cylinder 8: flow optimization and vortex reduction: The second baffle block 24 is similar to the first baffle block 21, and is designed to be arranged on the outside of the third inner cylinder 8 along its extension direction. The cross section perpendicular to the extension direction is composed of three second outer peripheries, one of which is connected to the outer wall of the third inner cylinder 8. This design also changes the flow characteristics of the fluid in the fluid channel between the third inner cylinder 8 and the second inner cylinder 5, avoids the formation of vortices when the fluid contacts the third inner cylinder 8, and improves the uniformity of fluid distribution and filtration efficiency.

[0062] The design of the second baffle block 24 takes into account the rotation direction of the third inner cylinder 8, and cooperates with the rotation of the first inner cylinder 4, the second inner cylinder 5 and the third inner cylinder 8, ensuring that the fluid can form an effective and uniform fluid movement when passing through the third inner cylinder 8, further improving the efficiency and effect of fluid treatment. The synergistic effect of the first baffle block 21 and the second baffle block 24: Fluid movement optimization: The first baffle block 21 and the second baffle block 24 work together during the fluid treatment process, by changing the flow path of the fluid in the channel between adjacent inner cylinders, avoiding the formation of vortices when the fluid contacts the inner cylinder, optimizing the fluid movement, and improving the filtration efficiency.

[0063] The triangular cross-sectional design of the baffle block reduces the resistance of the fluid flow and the energy consumption in the fluid treatment process, which plays an important role in improving the economic benefits and environmental friendliness of the device. The presence of the baffle block, combined with the rotation direction of the inner cylinder, helps to form reciprocating turbulence in the fluid channel. This turbulence can effectively clean the attachments on the surface of the inner cylinder, prevent membrane clogging, and extend the service life of the membrane assembly. The design of the baffle block can effectively prevent the short circuit of the fluid during the rotation process, ensure the uniform distribution of the fluid, and improve the treatment effect. It is particularly suitable for occasions such as fine chemicals and food processing where it is necessary to avoid short circuits of the fluid and ensure uniform treatment of the fluid. The design of the baffle block ensures uniform distribution of the fluid by preventing short circuits of the fluid during the rotation process and improves the treatment effect. In fine chemicals and food processing, the treatment of fluids needs to avoid local overheating or overcooling to ensure uniform treatment of the fluid. This design can effectively avoid short circuits of the fluid and improve the uniformity of fluid treatment, which has a significant effect on improving the quality of chemical products and food and reducing energy consumption.

[0064] Specifically, an end cap is provided at one end of the shell, and the end cap is provided with a liquid outlet pipe and a through hole for at least part of the power drive mechanism to pass through. The end cap 1 is provided at one end of the shell 2, usually the outlet end after the fluid is treated, and plays the role of closing the shell and supporting the liquid outlet pipe and the power drive mechanism. The end cap 1 not only provides a closed structure to prevent fluid leakage during the treatment process, but also provides necessary support and positioning for the installation of the liquid outlet pipe and the power drive mechanism, ensuring the structural stability and operational safety of the entire device. The liquid outlet pipe 10 serves as the outlet of the purified fluid, and its main function is to safely and efficiently guide the fluid after filtering and treatment by the nanofiltration membrane assembly out of the device for subsequent use or discharge. The arrangement of the liquid outlet pipe 10 cooperates with the layout of the filter membrane assembly in the shell to ensure the uniform flow and sufficient filtration of the fluid during the treatment process, thereby improving the overall efficiency and effect of fluid treatment.

[0065] The design of the through hole 9 enables the output shaft of the power drive mechanism (such as the motor 12) to pass through the end cover 1 and enter the interior of the shell, thereby transmitting power to the first gear 13, and then driving the rotation of the first inner cylinder 4, the second inner cylinder 5 and the third inner cylinder 8. The position and size design of the through hole 9 need to consider the compatibility with the power drive mechanism to ensure that the output shaft can pass smoothly. At the same time, through the fixation of the end cover 1, the structural stability of the entire device is enhanced, the vibration and noise during operation are reduced, and the service life and safety of the device are improved. Through the arrangement of the liquid outlet pipe 10 and the through hole 9 on the end cover 1, the layout of the filter membrane assembly (including the first inner cylinder 4, the second inner cylinder 5 and the third inner cylinder 8) in the shell is coordinated, the inlet and outlet paths of the fluid are optimized, the uniform distribution and efficient filtration of the fluid are achieved, and the overall efficiency of fluid treatment is significantly improved.

[0066] The close fit between the end cover 1 and the housing 2, as well as the precise positioning of the output shaft of the power drive mechanism by the through hole 9, together ensure the structural stability of the device under high-speed rotation, reduce the wear of components caused by vibration, and extend the service life of the device. Reduce energy consumption: The first baffle block 21 and the second baffle block 24 are combined with the rotation of the inner cylinder group to reduce the eddy current effect in the fluid flow and reduce the energy consumption in the fluid processing process, which has significant economic benefits in long-term industrial applications. The above design makes the installation and disassembly of the power drive mechanism and the liquid outlet pipe more convenient, facilitates the maintenance and cleaning of the device, reduces the maintenance cost, and improves the operability and maintenance efficiency of the device.

[0067] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0068] The fluid treatment membrane device provided by the present application can significantly enhance the turbulence effect of the fluid in the fluid channel by making the rotation directions of adjacent inner cylinders opposite to each other, thereby improving the filtration efficiency and the cleaning effect. At the same time, by setting a reflux structure, the fluid that is not completely filtered can be redirected to flow back, increasing the processing time of the fluid and further improving the thoroughness of the filtration. The design of the support assembly ensures the stable rotation of the inner cylinder, and the arrangement of the wavy first support frame and the second support frame and the first baffle block and the second baffle block can effectively prevent the short circuit phenomenon of the fluid during the rotation process, ensure the uniform distribution of the fluid, and improve the treatment effect.

[0069] In addition, the device has a compact structure and is easy to operate, and is suitable for a variety of fluid treatment scenarios such as water treatment, chemical industry, medicine and other fields, with broad application prospects and significant economic benefits. More importantly, the design concept of this device can be further expanded. For example, by adjusting the number, size, rotation speed of the inner cylinder and the structure of the fluid channel, it can be optimized for different types of fluids and different processing requirements to achieve more efficient and more accurate fluid processing.

[0070] At the same time, the modular design of the device makes maintenance and upgrading simple, reduces long-term operating costs, and enhances its competitiveness in the market. The design concept of this device can be optimized according to different types of fluids and different processing requirements by adjusting the number, size, rotation speed of the inner cylinders and the structure of the fluid channel to achieve more efficient and accurate fluid processing. For example, when processing chemical fluids with high concentrations of organic matter, the number of inner cylinders and the rotation speed can be increased to improve the filtration efficiency; when processing medical fluids with lower concentrations of suspended particles, the size of the fluid channel can be appropriately increased to reduce the resistance of the fluid and increase the processing speed.

[0071] This flexible design enables the device to adapt to a variety of industrial application scenarios, improving its market competitiveness and application value. At the same time, the modular design of the device makes maintenance and upgrading simpler, reducing long-term operating costs, and has a significant effect on improving industrial production efficiency and reducing production costs. It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, work, devices, components and / or combinations thereof.

[0072] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fluid treatment membrane device, characterized in that it comprises: A housing (2) having a cavity therein; A plurality of inner cylinders, the plurality of inner cylinders being arranged in the cavity of the shell (2), the plurality of inner cylinders being arranged in sequence, a fluid channel for fluid to flow through being formed between two adjacent inner cylinders, and a flow gap for fluid to flow through being formed between the outermost inner cylinder of the plurality of inner cylinders and the shell; A support assembly, the support assembly comprising: A plurality of partitions (15) are distributed at intervals on the inner wall of the shell (2); each of the partitions (15) is arranged obliquely relative to the center line of the cavity; A plurality of support frames (20) are arranged at intervals on the outer wall of the first inner tube (4), the contact surfaces between the plurality of partitions (15) and the plurality of support frames (20) are located on a predetermined cylindrical surface, and the axis of the predetermined cylindrical surface coincides with the center line of the cavity; The power driving mechanism is drivingly connected to the plurality of inner cylinders to drive the plurality of inner cylinders to rotate around the center line of the cavity and make the rotation directions of two adjacent inner cylinders opposite.

2. The fluid treatment membrane device according to claim 1, characterized in that: The multiple inner cylinders include a first inner cylinder (4), a second inner cylinder (5) and a third inner cylinder (8); the first inner cylinder (4), the second inner cylinder (5) and the third inner cylinder (8) are nested in sequence; and the flow gap is formed between the first inner cylinder (4) and the shell (2).

3. The fluid treatment membrane device according to claim 2, characterized in that: The first inner cylinder (4), the second inner cylinder (5) and the third inner cylinder (8) are respectively equipped with an internal meshing gear (17), a double meshing gear (19) and an external meshing gear (22); the power drive mechanism comprises a motor (12), a first gear (13) and a second gear (14); the output shaft of the motor (12) is coaxially connected with the first gear (13); the first gear (13) is respectively meshed with the internal meshing gear (17) and the double meshing gear (19); the second gear (14) is respectively meshed with the double meshing gear (19) and the external meshing gear (22), so that the first inner cylinder (4) and the third inner cylinder (8) rotate in the same direction, and the second inner cylinder (5) rotates in the opposite direction to the first inner cylinder (4).

4. The fluid treatment membrane device according to claim 1, characterized in that: The fluid treatment membrane device also includes: a reflux structure, which includes a reflux groove (26) opened at one end of the shell (2) and a reflux cover (3) arranged on the outside of the shell (2) and connected to the reflux groove (26), so that the fluid that is not completely filtered can flow into the reflux cover (3) through the reflux groove (26).

5. The fluid treatment membrane device according to claim 4, characterized in that: The reflux groove (26) is annular and is arranged around the center line of the cavity of the shell (2). The reflux groove (26) is arranged at one end of the shell (2) close to the power drive mechanism.

6. The fluid treatment membrane device according to claim 4, characterized in that: The inner wall of the shell (2) is provided with a plurality of inclined plates (16), and at least one inclined plate (16) is provided between two adjacent partitions (15). The end surface of one end of the inclined plate (16) is used to enclose the reflow groove (26), and the height of the inclined plate (16) gradually decreases in the direction away from the reflow groove (26); wherein the height direction of the inclined plate (16) is the radial direction of the cavity of the shell (2).

7. The fluid treatment membrane device according to claim 4, characterized in that: A stopper (28) is provided between the shell (2) and the return cup (3), and the stopper (28) contacts the outer wall of the first inner cylinder (4) which is the outermost inner cylinder among the plurality of inner cylinders.

8. The fluid treatment membrane device according to any one of claims 1 to 7, characterized in that: The support assembly further comprises a plurality of first support frames (18) in a wavy shape, one end of each of the first support frames (18) being mounted on the outer wall of the second inner cylinder (5) via a first fixing block (6), the second end of each of the first support frames (18) being a free end, each of the first support frames (18) extending along the extension direction of the second inner cylinder (5), and the plurality of first support frames (18) being arranged around the second inner cylinder (5); and / or the support assembly further comprises a second support frame (25) in a wavy shape, one end of each of the second support frames (25) being mounted on the outer wall of the third inner cylinder (8) via a second fixing block (7), the second end of each of the second support frames (25) being a free end, each of the second support frames (25) extending along the extension direction of the third inner cylinder (8), and the plurality of second support frames (25) being arranged around the third inner cylinder (8).

9. The fluid treatment membrane device according to any one of claims 1 to 7, characterized in that: A plurality of first flow blocking blocks (21) are arranged on the outer side of the second inner tube (5), each of the first flow blocking blocks (21) extends along the extension direction of the second inner tube (5), and a cross section of each of the first flow blocking blocks (21) perpendicular to the extension direction thereof is surrounded by three first outer peripheral edges, one of the first outer peripheral edges is connected to the outer wall of the second inner tube (5); and / or a plurality of second flow blocking blocks (24) are arranged on the outer side of the third inner tube (8), each of the second flow blocking blocks (24) extends along the extension direction of the third inner tube (8), and a cross section of each of the second flow blocking blocks (24) perpendicular to the extension direction thereof is surrounded by three second outer peripheral edges, one of the second outer peripheral edges is connected to the outer wall of the third inner tube (8).

10. The fluid treatment membrane device according to any one of claims 1 to 7, characterized in that: An end cover (1) is provided at one end of the housing (2), and the end cover (1) is provided with a liquid outlet pipe (10) and a through hole (9) for at least part of the power drive mechanism to pass through.

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