Modularized membrane assembly and immersed membrane filtration device comprising same

Abstract

The present invention relates to the technical field of wastewater purification, particularly to a modular membrane assembly and an immersed membrane filtration device comprising the modular membrane assembly, the modular membrane assembly comprises a frame body and a water inlet pipe fixedly mounted on one side of the frame body, and further comprises: an aeration device mounted at the bottom of the inner side of the frame body; the partition plate is fixedly mounted in the frame body; one end of each membrane frame fixedly penetrates through the corresponding partition plate; the multiple filter holes are formed in the outer side of the part, located below the partition plate, of the membrane frame in an annular array mode; the multiple vertical rods are fixedly installed in the frame body and located between the adjacent film frames; the flow guide plates are slidably mounted on the outer sides of the vertical rods and located between the adjacent film frames. According to the modular membrane assembly provided by the invention, the rotating rod rotates to drive the filter plate and the scraper to get close to each other, so that impurities on the surface of the filter plate can be cleaned.

Description

Technical Field

[0001] This invention relates to the field of wastewater purification technology, and in particular to a modular membrane module and an immersion membrane filtration device containing the module. Background Technology

[0002] Wastewater contains a variety of pollutants, making its treatment difficult and costly. However, physical, chemical, and biological technologies can be used to remove pollutants (such as suspended solids, organic matter, heavy metals, and pathogens) from wastewater, enabling the water quality to meet discharge standards.

[0003] Membrane filtration devices are typically used to purify wastewater. Multiple modules are installed within the device; membrane fibers adsorb and trap impurities in the wastewater. The purified water inside the membrane fibers flows out of the device through a drain pipe. Over long-term filtration, suspended solids, colloids, microorganisms, and other impurities can adhere to the surface of the membrane fibers (or membrane sheets), forming a "filter cake" or clogging the membrane pores. This leads to a decrease in membrane flux (reduced water production) and an increase in operating pressure. Therefore, an aeration device is usually installed at the bottom of the device (usually located below the membrane module) to aerate the water. When compressed air is introduced, a large number of bubbles (microbubbles / medium bubbles) are formed. As the bubbles rise, they cause the surrounding water flow to form a violent turbulent disturbance, which generates a "shearing force" on the membrane fiber surface, like a "water flow brush" washing the membrane surface and peeling off the loose impurities that have just adhered. However, the aeration device can only cause the water flow at the bottom or middle of the wastewater to fluctuate, while the fluctuation of the wastewater at the top is smaller, which is not conducive to the removal of impurities attached to the membrane fibers in this part. In addition, after the impurities are removed, they will still float in the wastewater and will be adsorbed on the membrane fiber surface again later, so the impurities cannot be removed fundamentally. Summary of the Invention

[0004] Therefore, it is necessary to provide a modular membrane module and an immersion membrane filtration device containing the above-mentioned module, which can improve the effect of water flow ripple while removing impurities, in order to address the above-mentioned technical problems.

[0005] The present invention provides a modular membrane assembly, comprising a frame and an inlet pipe fixedly installed on one side of the frame, and further comprising: An aeration device is installed at the bottom inside the frame. The partition is fixedly installed inside the frame. The membrane frame is fixed at one end through the partition, and the number of frames is set to multiple. The filter pores are arranged in a ring array on the outer side of the portion of the membrane frame located below the partition plate, and the number of such pores is set to multiple. Vertical rods are fixedly installed inside the frame, and multiple rods are provided between adjacent membrane frames; A flow deflector is slidably mounted on the outside of the vertical rod, located between adjacent membrane frames; The slots are symmetrically formed on the upper and lower sides of the guide plate along the axis. A groove is formed on one side of the slot, and the two are connected to each other; The filter plate is movably installed in the slot and slidably connected to the groove. A cleaning component, located inside the groove, is used to clean the surface of the filter plate.

[0006] In one embodiment, baffles are fixedly installed at both ends of the slot on the frame, and the baffles have multiple through holes.

[0007] In one embodiment, the cleaning assembly includes a movable frame that is slidably connected to the groove. A rotating cylinder is movably mounted on one side of the movable frame. A cylindrical tube is fixedly mounted at the end of the rotating tube away from the movable frame. A scraper is fixedly mounted at the bottom of the cylindrical tube and slides against the surface of the filter plate.

[0008] In one embodiment, a rotating rod is rotatably installed in the groove. The rotating rod has threads on both sides with opposite directions of rotation. The movable frame is movably sleeved on the outside of one of the threads, and a sliding frame is movably sleeved on the outside of the other thread. One side of the sliding frame is fixedly connected to the filter plate.

[0009] In one embodiment, a gear is fixedly installed on the outside of the rotating cylinder, and a rack is fixedly disposed in the groove. The rack is disposed on the side away from the filter plate, and the rack meshes with the gear for transmission.

[0010] In one embodiment, a vertical groove is provided on one side of the scraper, the interior of the scraper is hollow, the vertical groove is connected to the interior of the scraper, a movable block is slidably disposed inside the scraper, the movable block is slidably connected to the vertical groove and a push plate is fixedly disposed on the outside, and the push plate is slidably attached to the outside of the scraper.

[0011] In one embodiment, the bottom of the movable block is fixedly connected to the inner wall of the bottom of the scraper by a plurality of positioning springs.

[0012] In one embodiment, the cylinder is hollow inside and a crossbar is movably inserted through it. One end of the crossbar movably passes through the rotating cylinder and the other end is fixedly connected to the movable frame. A circular plate is fixedly sleeved on the outer side of the middle part of the crossbar. An arc-shaped groove is opened on the outer side of the circular plate. A movable rod is slidably embedded in the arc-shaped groove. The other end of the movable rod is fixedly connected to the top of the movable block.

[0013] In one embodiment, the scraper has axially symmetrical movable grooves on both sides of the end away from the filter plate. The movable grooves are interconnected with the interior of the scraper. A brush plate is movably disposed in the movable groove, and the brush portion of the brush plate slides and adheres to the surface of the filter plate.

[0014] In one embodiment, one side of the brush plate is fixedly connected to the inner wall of the scraper by a plurality of return springs.

[0015] In one embodiment, a plurality of limit rods are fixedly arranged in a linear array from top to bottom on one side of the brush plate, with multiple limit rods in a single group. A lifting frame is fixedly arranged on one side of the moving block, and the lifting frame has a protrusion corresponding to the limit rod on the side facing the brush plate. The protrusion movably abuts against the limit rod.

[0016] In one embodiment, an immersion membrane filtration device includes the aforementioned modular membrane assembly.

[0017] The aforementioned modular membrane module and immersion membrane filtration device containing the module can clean impurities on the surface of the filter plate by rotating the rotating rod to bring the filter plate and scraper closer together; the movement of the push plate can accelerate the speed at which impurities on the scraper surface are removed; and the cooperation between the protrusion and the limiting rod can make the brush bristles of the brush plate vibrate, accelerating the speed at which impurities adhering to the bristles are removed. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the frame in this invention; Figure 3 This is a schematic diagram of the flow guide plate in this invention; Figure 4 This is a schematic diagram of the internal structure of the groove in this invention; Figure 5 This is a schematic diagram of the rotating rod in this invention; Figure 6 for Figure 5 Enlarged diagram of part A in the middle; Figure 7 This is a schematic diagram of the gear structure in this invention; Figure 8 This is a schematic diagram of the crossbar structure in this invention; Figure 9 This is a schematic diagram of the circular plate in this invention; Figure 10 for Figure 9 Enlarged diagram of section B; Figure 11 This is a schematic diagram of the movable groove in this invention.

[0020] Figure label: 1. Frame; 2. Inlet pipe; 3. Aeration device; 4. Baffle; 5. Membrane frame; 51. Filter hole; 6. Vertical rod; 7. Guide plate; 71. Groove; 72. Recess; 8. Filter plate; 9. Cleaning assembly; 91. Moving frame; 92. Rotating cylinder; 93. Cylinder; 94. Scraper; 941. Vertical groove; 942. Movable groove; 10. Baffle; 101. Through hole; 11. Rotating rod; 12. Sliding frame; 13. Gear; 14. Rack; 15. Moving block; 16. Push plate; 17. Positioning spring; 18. Horizontal rod; 19. Circular plate; 191. Arc groove; 20. Movable rod; 21. Brush plate; 22. Return spring; 23. Limiting rod; 24. Lifting frame; 25. Protrusion. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0026] The following is combined with Figures 1-11 This invention describes a modular membrane module and an immersion membrane filtration device containing the module.

[0027] like Figures 1-5 As shown, in one embodiment, a modular membrane assembly includes a frame 1 and an inlet pipe 2 fixedly installed on one side of the frame 1, and further includes: Aeration device 3 is installed at the bottom inside the frame 1; Partition 4 is fixedly installed inside the frame 1; The membrane frame 5 has a through-plate 4 fixed at one end, and the number of such plates is set to multiple. Filter holes 51 are arranged in a ring array on the outer side of the membrane frame 5 located below the partition 4, and the number of such holes is set to multiple. Vertical rods 6 are fixedly installed inside the frame 1, and multiple rods are set between adjacent membrane frames 5; The guide plate 7 is slidably installed on the outside of the vertical rod 6, located between adjacent membrane frames 5; The slots 71 are axially symmetrically opened on the upper and lower sides of the guide plate 7; The groove 72 is formed on one side of the slot 71, and the two are connected to each other; The filter plate 8 is movably installed in the slot 71 and slidably connected to the groove 72; The cleaning component 9 is located inside the groove 72 and is used to clean the surface of the filter plate 8.

[0028] Specifically, wastewater is introduced into the frame 1 through the inlet pipe 2. The height of the inlet pipe 2 should be lower than the height of the partition 4, and the height of the wastewater should not exceed the partition 4. After the wastewater enters the frame 1, a portion of it passes through the membrane frame 5. The filter holes 51 on the membrane frame 5 will block some particulate impurities in the wastewater, thus achieving wastewater purification. The filter holes 51 on the membrane frame 5 can also be designed as membrane fibers, which can also achieve the effect of separating impurities from water. The top of the membrane frame 5 passes through the partition 4 and is connected to an external extraction device, which can extract the water that has undergone separation and filtration inside the membrane frame 5, thus achieving wastewater purification. During the purification process, some impurities will accumulate in the filter holes 51 or the membrane fibers. Accumulated impurities on the surface can cause blockage, affecting the subsequent purification efficiency of wastewater. Therefore, aeration device 3 can be activated simultaneously. Aeration device 3 introduces compressed air into the water, forming a large number of bubbles (microbubbles / medium-sized bubbles). As the bubbles rise, they create intense turbulence in the surrounding water, generating shear force on the membrane fiber surface. This acts like a "water flow brush," washing away loosely attached impurities and preventing the filter cake layer from thickening. Traditional bottom aeration relies mainly on axial turbulence formed by rising bubbles. The disturbance intensity in areas such as filter pores 51 (membrane fiber gaps) and the middle of the module decreases with height, easily creating cleaning dead zones. Therefore, aeration device 3 can be activated simultaneously. While operating, the guide plate 7 can also be moved up and down along the vertical rod 6. The up-and-down movement of the guide plate 7 can actively drive the water flow to form a periodic longitudinal (up-and-down) undulating flow. This undulating flow can be superimposed with the rising flow of air bubbles to form a "axial + longitudinal" composite flow field throughout the membrane module, significantly improving the ability to remove viscous filter cake layers and impurities between membrane fibers. When the guide plate 7 moves upward, the water flow is downward relative to the guide plate 7. At this time, the filter plate 8 in the top slot 71 blocks the slot 71, and the filter plate 8 corresponding to the bottom slot 71 is located inside the bottom groove 72. During the upward movement of the top filter plate 8, impurities in the wastewater can be filtered and separated, and some impurities are blocked on the top of the filter plate 8. On the surface, water flows through the top filter plate 8 and enters the top slot 71, which intensifies the water flow fluctuation and also filters and separates the wastewater. When the guide plate 7 moves to the top of the vertical rod 6, it will move downward. At this time, the top filter plate 8 moves into the groove 72 and the cleaning component 9 cleans the upper surface of the filter plate 8. The bottom filter plate 8 moves out from the corresponding groove 72 and blocks the bottom slot 71. When the guide plate 7 moves downward, the water flow moves upward relative to the guide plate 7. At this time, the filter plate 8 at the bottom of the guide plate 7 can come into more contact with the impurities in the wastewater, achieving a better separation and filtration effect. The separated impurities can be purified by subsequent chemical cleaning reagents.

[0029] See Figure 3 As shown, in this embodiment, baffles 10 are fixedly installed at both ends of the slot 71 of the frame 1, and multiple through holes 101 are opened on the baffles 10.

[0030] Specifically, wastewater passes through filter plate 8, impurities are blocked on the surface of filter plate 8, and after passing through filter plate 8, the water flows into the interior of groove 72 and is discharged through the through holes 101 of baffles 10 on both sides of groove 72. Through holes 101 can also play a secondary filtration role. In addition, the water flow discharged from through holes 101 can further enhance the ripple effect of the water flow, making the flushing effect on filter holes 51 or membrane fibers better.

[0031] See Figures 4-7 As shown, in this embodiment, the cleaning component 9 includes a movable frame 91, which is slidably connected to the groove 72. A rotating cylinder 92 is movably installed on one side of the movable frame 91. A cylinder 93 is fixedly installed at the end of the rotating cylinder 92 away from the movable frame 91. A scraper 94 is fixedly installed at the bottom of the cylinder 93. The scraper 94 slides and adheres to the surface of the filter plate 8.

[0032] Specifically, when cleaning the filter plate 8 is required, the filter plate 8 is moved into the groove 72. At the same time, the moving frame 91 is moved towards the filter plate 8. The movement of the moving frame 91 drives the rotating cylinder 92, the cylinder 93, and the scraper 94 to move together towards the filter plate 8. The scraper 94 is initially in a vertical state. When the scraper 94 moves towards the filter plate 8, the rotating cylinder 92 is rotated 90 degrees clockwise. The rotation of the rotating cylinder 92 drives the cylinder 93 and the scraper 94 to rotate 90 degrees, and the scraper 94 becomes horizontal. At this time, the bottom of the scraper 94 is flush with the top of the filter plate 8. The scraper 94 and the filter plate 8 move closer to each other until the scraper 94 slides on the surface of the filter plate 8. This ensures that the scraped impurities are on the surface of the scraper 94 and do not accumulate on the surface of the filter plate 8. If the scraper 94 remains vertical and slides along the surface of the filter plate 8, the scraper 94 will push the impurities on the surface of the filter plate 8 to one side and will not separate them from the filter plate 8, which will greatly reduce the cleaning effect.

[0033] See Figure 5 and Figure 7 As shown, in this embodiment, a rotating rod 11 is rotatably installed in the groove 72. Both sides of the rotating rod 11 are provided with threads and the two threads rotate in opposite directions. The movable frame 91 is movably sleeved on the outside of one of the threads, and a sliding frame 12 is movably sleeved on the outside of the other thread. One side of the sliding frame 12 is fixedly connected to the filter plate 8.

[0034] Specifically, when the filter plate 8 needs to be cleaned, the rotating rod 11 is rotated. The rotation of the rotating rod 11 drives the threads on both sides to rotate. Since the threads on both sides rotate in opposite directions, the rotation of the rotating rod 11 will drive the moving frame 91 and the sliding frame 12 to move closer to each other, so that the filter plate 8 moves into the groove 72. The scraper 94 also moves towards the filter plate 8, that is, the filter plate 8 and the scraper 94 move closer to each other, which is convenient and quick to operate.

[0035] See Figure 7As shown, in this embodiment, a gear 13 is fixedly installed on the outside of the rotating cylinder 92, and a rack 14 is fixedly installed in the groove 72. The rack 14 is located on the side away from the filter plate 8, and the rack 14 meshes with the gear 13 for transmission.

[0036] Specifically, when the filter plate 8 moves toward the inside of the groove 72, the moving frame 91 and the scraper 94 move toward the direction closer to the filter plate 8. At this time, the scraper 94 is in a vertical state. During the movement, the gear 13 meshes with the rack 14, and the gear 13 rotates clockwise, thereby driving the scraper 94 to rotate to a horizontal state. Then, the scraper 94 remains in a horizontal state and adheres to the surface of the filter plate 8, which can scrape the impurities on the surface of the filter plate 8 onto the scraper 94. Then, the rotating rod 11 is rotated in the opposite direction to make the scraper 94 and the filter plate 8 move away from each other. After moving away a certain distance, the gear 13 will mesh with the rack 14 again. The gear 13, the rotating cylinder 92, the cylinder 93 and the scraper 94 rotate counterclockwise, so that the scraper 94 becomes vertical again. This makes it easier for the impurities on the surface of the scraper 94 to be removed by gravity.

[0037] See Figure 6 and Figure 8 As shown, in this embodiment, a vertical groove 941 is provided on one side of the scraper 94, the interior of the scraper 94 is hollow, the vertical groove 941 is connected to the interior of the scraper 94, a moving block 15 is slidably provided inside the scraper 94, the moving block 15 is slidably connected to the vertical groove 941 and a push plate 16 is fixedly provided on the outside, and the push plate 16 is slidably attached to the outside of the scraper 94.

[0038] Specifically, when the scraper 94 is in a vertical position, the bottom of the pusher 16 is in contact with the bottom of the scraper 94. When the scraper 94 moves towards the filter plate 8, the moving block 15 moves upward along the vertical groove 941 and the scraper 94. The upward movement of the moving block 15 drives the pusher 16 to move upward. Then the scraper 94 remains horizontal and in contact with the surface of the filter plate 8, scooping up some impurities. At this time, there is still a distance between the pusher 16 and the end of the scraper 94, so that impurities will not stick. Then the scraper 94 and the filter plate 8 move away from each other. At this time, the scraper 94 rotates counterclockwise to become vertical. During this process, the moving block 15 and the pusher 16 move downward. During the downward movement, the pusher 16 is in contact with the lower part of the scraper 94, which can accelerate the removal of impurities from the scraper 94.

[0039] See Figure 8 and Figure 10 As shown, in this embodiment, the bottom of the moving block 15 is fixedly connected to the inner wall of the bottom of the scraper 94 by a plurality of positioning springs 17.

[0040] Specifically, as the moving block 15 moves up and down along the scraper 94, the positioning spring 17 will deform, which can improve the stability of the moving block 15 during the up and down movement.

[0041] See Figures 8-10 As shown, in this embodiment, the cylinder 93 is hollow inside and a crossbar 18 is movably inserted through it. One end of the crossbar 18 movably passes through the rotating cylinder 92 and the other end is fixedly connected to the movable frame 91. A circular plate 19 is fixedly sleeved on the outer side of the middle part of the crossbar 18. An arc-shaped groove 191 is opened on the outer side of the circular plate 19. A movable rod 20 is slidably embedded in the arc-shaped groove 191. The other end of the movable rod 20 is fixedly connected to the top of the movable block 15.

[0042] Specifically, when the scraper 94 and the filter plate 8 move closer to each other, the gear 13 meshes with the rack 14 and rotates clockwise, causing the rotating cylinder 92, the cylinder 93 and the scraper 94 to rotate clockwise synchronously. During the rotation of the cylinder 93, the crossbar 18 remains stationary, and the top of the movable rod 20 moves from the convex part to the concave part along the arc groove 191. The movable rod 20 moves, thereby pulling the movable block 15 upward along the vertical groove 941 and the scraper 94, thereby driving the push plate 16 upward. Similarly, when the scraper 94 and the filter plate 8 move away from each other, the scraper 94 rotates counterclockwise with the cylinder 93 and becomes vertical. At this time, the movable rod 20 moves from the concave part to the convex part along the arc groove 191 opened in the circular plate 19. The movable rod 20 drives the movable block 15 and the push plate 16 to move downward relative to the scraper 94. During the downward movement of the push plate 16, the separation of impurities from the scraper 94 is accelerated.

[0043] See Figure 11 As shown, in this embodiment, the scraper 94 has axially symmetrical movable grooves 942 on both sides of the end away from the filter plate 8. The movable grooves 942 are interconnected with the interior of the scraper 94. A brush plate 21 is movably disposed in the movable groove 942, and the brush part of the brush plate 21 slides and fits against the surface of the filter plate 8.

[0044] Specifically, when the scraper 94 changes from a vertical state to a horizontal state, the brush plate 21 at the bottom of the scraper 94 is located inside the movable groove 942. As the scraper 94 moves, the brush plate 21 will adhere to the surface of the filter plate 8. The bristles of the brush plate 21 will slide along the surface of the filter plate 8 during the movement, which can clear the filter holes 51 on the filter plate 8 and prevent impurities from getting stuck inside and affecting the filtration quality of the filter plate 8.

[0045] See Figures 9-11 As shown, in this embodiment, one side of the brush plate 21 is fixedly connected to the inner wall of the scraper 94 by a plurality of return springs 22.

[0046] Specifically, when the scraper 94 slides along the surface of the filter plate 8 and the two move away from each other, the scraper 94 will rotate counterclockwise and turn into a vertical state. During this process, the brush plate 21 moves laterally back and forth along the movable groove 942, which will cause the return spring 22 to deform. With the help of the characteristics of the spring, the bristles of the brush plate 21 will vibrate slightly, which will accelerate the removal of impurities attached to the bristles. The return spring 22 also improves the stability of the brush plate 21 during the movement process.

[0047] See Figures 9-11 As shown, in this embodiment, a number of limit rods 23 arranged in a linear array from top to bottom are fixedly provided on one side of the brush plate 21. The number of limit rods 23 in a single set is multiple. A lifting frame 24 is fixedly provided on one side of the moving block 15. The lifting frame 24 facing the brush plate 21 has a protrusion 25 corresponding to the limit rod 23. The protrusion 25 and the limit rod 23 are in movable contact.

[0048] Specifically, when the scraper 94 slides along the surface of the filter plate 8 and moves away from each other, the moving block 15 will move downward relative to the scraper 94. The downward movement of the moving block 15 will drive the lifting frame 24 to move downward. When the lifting frame 24 moves downward, it will drive the protrusion 25 to move downward. During the movement of the protrusion 25, it will abut against the limiting rod 23, thereby driving the limiting rod 23 and the brush plate 21 to move outward. During this process, the return spring 22 is stretched. Then the protrusion 25 continues to move downward and no longer contacts the limiting rod 23. Under the action of the return spring 22, it will drive the limiting rod 23 and the brush plate 21 to move back to the initial position, causing the bristles to vibrate and accelerate the removal of impurities adhering to the comb from the bristles.

[0049] In this embodiment, an immersion membrane filtration device includes the above-described modular membrane assembly.

[0050] Specifically, the filtration device can be equipped with multiple sets of the above-mentioned modular membrane modules.

[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A modular membrane assembly, comprising a frame and an inlet pipe fixedly installed on one side of the frame, characterized in that, Also includes: An aeration device is installed at the bottom inside the frame. The partition is fixedly installed inside the frame. The membrane frame is fixed at one end through the partition, and the number of frames is set to multiple. The filter pores are arranged in a ring array on the outer side of the portion of the membrane frame located below the partition plate, and the number of such pores is set to multiple. Vertical rods are fixedly installed inside the frame, and multiple rods are provided between adjacent membrane frames; A flow deflector is slidably mounted on the outside of the vertical rod, located between adjacent membrane frames; The slots are symmetrically formed on the upper and lower sides of the guide plate along the axis. A groove is formed on one side of the slot, and the two are connected to each other; The filter plate is movably installed in the slot and slidably connected to the groove. A cleaning component, located inside the groove, is used to clean the surface of the filter plate.

2. A modular membrane module according to claim 1, characterized in that, The frame is fixedly equipped with baffles at both ends of the slot, and the baffles have multiple through holes.

3. A modular membrane module according to claim 1, characterized in that, The cleaning assembly includes a movable frame that is slidably connected to the groove. A rotating cylinder is movably mounted on one side of the movable frame. A cylindrical tube is fixedly mounted at the end of the rotating tube away from the movable frame. A scraper is fixedly mounted at the bottom of the cylindrical tube and slides against the surface of the filter plate.

4. A modular membrane module according to claim 3, characterized in that, A rotating rod is rotatably installed in the groove. The rotating rod has threads on both sides with opposite directions. The movable frame is movably sleeved on the outside of one of the threads, and a sliding frame is movably sleeved on the outside of the other thread. One side of the sliding frame is fixedly connected to the filter plate.

5. A modular membrane module according to claim 3, characterized in that, A gear is fixedly installed on the outside of the rotating cylinder, and a rack is fixedly installed in the groove. The rack is located on the side away from the filter plate, and the rack meshes with the gear for transmission.

6. A modular membrane module according to claim 3, characterized in that, A vertical groove is provided on one side of the scraper. The interior of the scraper is hollow. The vertical groove is connected to the interior of the scraper. A moving block is slidably arranged inside the scraper. The moving block is slidably connected to the vertical groove and a push plate is fixedly arranged on its outer side. The push plate is slidably attached to the outer side of the scraper.

7. A modular membrane module according to claim 6, characterized in that, The bottom of the movable block is fixedly connected to the inner wall of the bottom of the scraper by multiple positioning springs.

8. A modular membrane module according to claim 6, characterized in that, The cylinder is hollow inside and has a crossbar that moves through it. One end of the crossbar moves through the rotating cylinder and the other end is fixedly connected to the movable frame. A circular plate is fixedly sleeved on the outer side of the middle part of the crossbar. An arc-shaped groove is opened on the outer side of the circular plate. A movable rod is slidably embedded in the arc-shaped groove. The other end of the movable rod is fixedly connected to the top of the movable block.

9. A modular membrane module according to claim 6, characterized in that, The scraper has axially symmetrical movable grooves on both sides of the end away from the filter plate. The movable grooves are interconnected with the interior of the scraper. A brush plate is movably arranged in the movable groove, and the brush part of the brush plate slides and fits against the surface of the filter plate.

10. A modular membrane module according to claim 9, characterized in that, One side of the brush plate is fixedly connected to the inner wall of the scraper by multiple return springs.

11. A modular membrane module according to claim 10, characterized in that, Multiple sets of limiting rods are fixedly arranged in a linear array from top to bottom on one side of the brush plate. The number of limiting rods in a single set is multiple. A lifting frame is fixedly arranged on one side of the moving block. The lifting frame has a protrusion corresponding to the limiting rod on the side facing the brush plate. The protrusion moves and abuts against the limiting rod.

12. An immersion membrane filtration device, characterized in that, Includes the modular membrane assembly as described in any one of claims 1-11.

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