Ultrafiltration membrane water purification device

Abstract

The utility model discloses an ultrafiltration membrane water purification device which comprises a frame assembly, a flocculation assembly, a precipitation assembly, a membrane assembly and an aeration assembly, and the flocculation assembly, the precipitation assembly, the membrane assembly and the aeration assembly are integrated in the frame assembly, so that the occupied space of the whole water purification device is reduced; and the development requirements of miniaturization and decentralization of the water purification system are met. Flocculation, precipitation and the ultrafiltration membrane are combined together, the impurity content of a water body subjected to flocculation and precipitation is greatly reduced, the accumulation efficiency of impurities on the outer surface of the ultrafiltration membrane is reduced, the flushing frequency of the ultrafiltration membrane is reduced, the filtration advantage of the ultrafiltration membrane is exerted to the maximum extent, the water purification efficiency is improved, and energy conservation and environmental protection are achieved.

Description

Technical Field

[0001] This utility model relates to the field of water purification, and in particular to an ultrafiltration membrane water purification device. Background Technology

[0002] With the gradual increase in water purification projects related to water resources and their trend towards smaller and more decentralized operations, users need to consider factors such as the volume of water to be purified, purification efficiency, purchase cost, and floor space when purchasing water purification equipment for small and medium-sized water purification plants. Based on these factors, traditional water purification systems cannot meet the usage requirements. Summary of the Invention

[0003] In view of this, the purpose of this utility model is to provide an ultrafiltration membrane water purification device.

[0004] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0005] This application provides an ultrafiltration membrane water purification device, including a frame assembly, a flocculation assembly, a sedimentation assembly, a membrane assembly, and an aeration assembly. The frame assembly includes a shell, a first partition, and a second partition. The shell has a receiving cavity. The first partition and the second partition are sequentially spaced within the shell, dividing the shell into a first chamber, a second chamber, and a third chamber. The flocculation assembly is disposed within the first chamber and is used to flocculate the liquid entering the first chamber. The sedimentation assembly is disposed within the second chamber and is used to settle the liquid entering the second chamber.

[0006] The membrane module is located in the third chamber. The membrane module includes an MBR curtain-type hollow membrane module, a base, a connecting frame, and a collecting pipe. The base is located in the third chamber and has MBR curtain-type hollow membrane modules suspended on it in a preset manner. The connecting frame is located above the MBR curtain-type hollow membrane modules and is connected to the MBR curtain-type hollow membrane modules. The collecting pipe is connected to the connecting frame. The membrane module is used to filter the liquid in the third chamber to obtain clean water and output the clean water from the connecting frame and the collecting pipe. The aeration module includes an aeration pipeline and a blower. The aeration pipeline is located below the base and the output end of the aeration pipeline faces the MBR curtain-type hollow membrane module.

[0007] In some embodiments, the flocculation assembly includes a first flocculation baffle, a second flocculation baffle, and a plurality of flocculation mesh groups. The first flocculation baffle is disposed in a first chamber. The second flocculation baffle is disposed in the first chamber. The first flocculation baffle is perpendicular to the second flocculation baffle. The first flocculation baffle and the second flocculation baffle divide the first chamber into a plurality of flocculation chambers, which are connected in sequence. Each flocculation mesh group is disposed in a flocculation chamber. The flocculation mesh group includes a plurality of flocculation meshes, which are distributed at intervals along the vertical direction in the flocculation chamber.

[0008] The water purification device also includes an inlet pipe that is connected to one of the flocculation chambers.

[0009] In some embodiments, the system further includes a vortex assembly disposed between the inlet pipe and the flocculation chamber. The vortex assembly includes a first outlet pipe, a first vortex disk, a first vortex cover plate, and a first vortex baffle plate. The first vortex disk is disc-shaped, and the first vortex cover plate covers the first vortex disk. The first vortex cover plate has a vortex chamber. The inlet pipe communicates with the vortex chamber along the tangential direction of the first vortex cover plate. The first vortex baffle plate is spirally coiled in the vortex chamber from the edge of the first vortex disk toward the central axis of the first vortex disk. The first outlet pipe is disposed at the central axis of the first vortex disk, and the other end of the first outlet pipe extends downward and communicates with the flocculation chamber.

[0010] In some embodiments, the aeration pipeline is provided with multiple connection holes, and the aeration assembly further includes an aeration nozzle group, which includes multiple aeration nozzles, each aeration nozzle communicating with a connection hole, and the aeration nozzle group is positioned toward the MBR curtain hollow membrane assembly.

[0011] In some embodiments, the bottom of the first partition is provided with a first connection opening, and the first chamber and the second chamber are connected through the first connection opening. The sedimentation assembly also includes an inclined tube group, which includes multiple inclined tubes. The multiple inclined tubes are inclined at a certain angle to the shell. The inclined tube group is set at a first preset height, which is higher than the setting height of the first connection opening. The inclined tube group is used to block impurities in the liquid.

[0012] In some embodiments, the upper part of the second partition is provided with a second connection opening, the second chamber and the third chamber are connected through the second connection opening, the first preset height is lower than the setting height of the second connection opening, the sedimentation assembly also includes an outlet weir and a second outlet pipe, the outlet weir is disposed above the inclined tube group, and part of the outlet weir protrudes out of the second connection opening; the second outlet pipe is disposed in the third chamber, the upper part of the second outlet pipe is connected to the outlet weir, and the lower part of the second outlet pipe extends downward to the bottom of the third chamber.

[0013] In some embodiments, there are multiple MBR curtain-type hollow membrane units, which are arranged equidistantly on the base; each MBR curtain-type hollow membrane unit includes multiple MBR curtain-type hollow membranes arranged in parallel, and the end of each MBR curtain-type hollow membrane is connected to the connecting frame.

[0014] In some embodiments, the device further includes a clean water tank connected to a collection pipe; the water purification device also includes a valve assembly, which includes a first valve and a second valve, the first valve being disposed at the collection pipe and the second valve being disposed on the aeration pipe.

[0015] In some embodiments, a third outlet pipe is also included, which is connected to a collecting pipe and is used to output clean water; the first valve is a backwash pump, and the valve assembly also includes a third valve, which is disposed on the third outlet pipe and is a product water pump.

[0016] In some embodiments, the flocculation assembly further includes a first drain pipe disposed at the bottom of the first chamber for discharging wastewater from the first chamber; the sedimentation assembly further includes a second drain pipe disposed at the bottom of the second chamber for discharging wastewater from the second chamber; and the membrane assembly further includes a third drain pipe disposed at the bottom of the third chamber for discharging wastewater from the third chamber.

[0017] By adopting the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows:

[0018] Unlike existing technologies, the above-mentioned technical solution includes an ultrafiltration membrane water purification device comprising a frame assembly, a flocculation assembly, a sedimentation assembly, a membrane assembly, and an aeration assembly. Integrating these components within the frame assembly reduces the overall footprint of the water purification device, meeting the demands for miniaturization and decentralization in water purification systems. By combining flocculation, sedimentation, and ultrafiltration membranes, the impurity content in the water after flocculation and sedimentation is significantly reduced. This decreases the accumulation of impurities on the outer surface of the ultrafiltration membrane, reduces the frequency of membrane rinsing, maximizes the filtration advantages of the ultrafiltration membrane, improves water purification efficiency, and is energy-saving and environmentally friendly. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is the first schematic diagram of an ultrafiltration membrane water purification device;

[0021] Figure 2 yes Figure 1 Cross-sectional view;

[0022] Figure 3 This is a schematic diagram of the eddy current assembly;

[0023] Figure 4 This is a second schematic diagram of an ultrafiltration membrane water purification device;

[0024] Figure 5 This is a schematic diagram of the membrane module and the aeration module.

[0025] Figure label:

[0026] 1. Framework components;

[0027] 11. Shell;

[0028] 12. First partition;

[0029] 13. Second partition;

[0030] 14. First chamber;

[0031] 15. Second chamber;

[0032] 16. Third chamber;

[0033] 2. Flocculation components;

[0034] 21. First flocculation baffle;

[0035] 22. Second flocculation baffle;

[0036] 23. Flocculation grid group;

[0037] 24. Flocculation chamber;

[0038] 25. First sewage pipe;

[0039] 3. Precipitation components;

[0040] 31. Inclined tube assembly;

[0041] 32. Outflow weir;

[0042] 33. Second water outlet pipe;

[0043] 34. Second sewage pipe;

[0044] 4. Membrane module;

[0045] 41. MBR curtain-type hollow membrane module;

[0046] 42. Base;

[0047] 43. Connecting frame;

[0048] 44. Manifold;

[0049] 45. Third sewage pipe;

[0050] 5. Aeration components;

[0051] 51. Aeration piping;

[0052] 52. Blower;

[0053] 6. Clear water tank;

[0054] 7. Water inlet pipe;

[0055] 8. Eddy current assembly;

[0056] 81. First water outlet pipe;

[0057] 82. First vortex disk;

[0058] 83. First vortex baffle;

[0059] 84. First vortex cover plate;

[0060] 91. First valve;

[0061] 92. Second valve;

[0062] 93. Third valve. Detailed Implementation

[0063] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are only for illustrating the present invention and do not limit the scope of the present invention. Similarly, the following embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0064] Please see Figures 1 to 5This embodiment provides an ultrafiltration membrane water purification device, including a frame assembly 1, a flocculation assembly 2, a sedimentation assembly 3, a membrane assembly 4, and an aeration assembly 5. The frame assembly 1 includes a shell 11, a first partition 12, and a second partition 13. The shell 11 has a receiving cavity. The first partition 12 and the second partition 13 are sequentially spaced within the shell 11, dividing the shell 11 into a first chamber 14, a second chamber 15, and a third chamber 16. The flocculation assembly 2 is disposed in the first chamber 14 and is used to flocculate the liquid entering the first chamber 14. The sedimentation assembly 3 is disposed in the second chamber 15 and is used to settle the liquid entering the second chamber 15. The membrane assembly 4 is disposed in the third chamber 16. The membrane module 4 includes an MBR curtain-type hollow membrane module 41, a base 42, a connecting frame 43, and a collecting pipe 44. The base 42 is placed inside the third chamber 16, and the MBR curtain-type hollow membrane modules 41 are suspended on the base 42 in a preset manner. The connecting frame 43 is located above the MBR curtain-type hollow membrane modules 41 and is connected to the MBR curtain-type hollow membrane modules 41. The collecting pipe 44 is connected to the connecting frame 43. The membrane module 4 is used to filter the liquid in the third chamber 16 to obtain clean water, and output the clean water from the connecting frame 43 and the collecting pipe 44. The aeration module 5 includes an aeration pipe 51 and a blower 52. The aeration pipe 51 is located below the base 42, and the output end of the aeration pipe 51 is set towards the MBR curtain-type hollow membrane module 41.

[0065] In this embodiment, the housing 11 can be understood as a box of specified dimensions, such as... Figure 1 The box-type structure shown facilitates the installation of the entire water purification device. The housing 11 has a receiving cavity, within which are a first partition 12 and a second partition 13. The first partition 12 and the second partition 13 are arranged parallel to each other to divide the receiving cavity into three chambers. For ease of description, the three chambers are respectively designated as chamber 14, chamber 15, and chamber 16. It should be noted that chambers 14, 15, and 16 are numbered according to the water flow direction. The sizes of chambers 14, 15, and 16 can be different, and can be configured according to actual needs. Figure 2 The size distribution of the first chamber 14, the second chamber 15, and the third chamber 16 is shown.

[0066] The water purification process generally includes three steps: flocculation, sedimentation, and filtration. In this embodiment, based on this, a flocculation component 2 is installed in the first chamber 14, a sedimentation component 3 is installed in the second chamber 15, and a membrane component 4 is installed in the third chamber 16. The flocculation component 2 and sedimentation component 3 can be understood by referring to commercially available flocculation and sedimentation structures, or by referring to the structures of flocculation component 2 and sedimentation component 3 described later.

[0067] Furthermore, membrane module 4 is disposed within the third chamber 16. Membrane module 4 includes an MBR curtain-type hollow membrane module 41, a base 42, a connecting frame 43, and a collecting pipe 44. MBR curtain-type hollow membrane is a membrane separation technology used in membrane bioreactors. The membrane structure adopts a curtain-type structure of hollow fiber membranes. The membrane material is typically polyethersulfone (PES) or polyvinylidene fluoride (PVDF), and the membrane pore size is generally 0.01-0.4 μm. It can effectively retain bacteria and large molecular pollutants. In use, wastewater enters the membrane separation unit after biological treatment. Driven by a pump, the wastewater flows from the outside of the membrane to the inner cavity. The membrane pores retain bacteria, suspended solids, etc., while the effluent flows out from the inner cavity. The MBR curtain-type hollow membrane module 41 can be understood as multiple MBR curtain-type hollow membranes forming a group as a distribution unit. The MBR curtain-type hollow membrane module 41 has the characteristics of high flux, high effluent water quality, and small footprint. The flux per unit area can reach 10-20L / (m2·h), and the effluent turbidity is usually less than 1NTU. Compared with traditional sedimentation tanks, it can save more than 50% of the footprint. It also has the advantage of strong resistance to shock loads, can cope with fluctuations in influent water quality, and is suitable for various water purification scenarios.

[0068] Please see Figure 2 In some embodiments, there are multiple MBR curtain hollow membrane units 41, which are equidistantly arranged on the base 42; each MBR curtain hollow membrane unit 41 includes multiple MBR curtain hollow membranes arranged in parallel, and the end of each MBR curtain hollow membrane is connected to the connecting frame 43.

[0069] The base 42 can be a hollow base formed by welding steel pipes. The base 42 is mainly used to fix the MBR curtain-type hollow membrane module 41 to facilitate the laying of the aeration pipeline 51. A connecting frame 43 is provided above the MBR curtain-type hollow membrane module 41. The connecting frame 43 can be understood as a support structure that supports and connects multiple MBR curtain-type hollow membranes. For example, multiple MBR curtain-type hollow membranes can be integrated on the PVC pipe and connected to form the connecting frame 43. The collecting pipe 44 is connected to the connecting frame 43. The filtered water inside the membrane is collected in the connecting frame 43 and then output to the external water storage tank or water use area through the collecting pipe 44 to realize the collection and transportation of clean water for the next step of operation.

[0070] In this embodiment, an aeration assembly 5 is also provided below the membrane module 4. The aeration assembly 5 may specifically include an aeration pipe 51 and a blower 52. The aeration pipe 51 is laid below the MBR curtain-type hollow membrane module 41. Optionally, it can be set below the base 42. The aeration pipe 51 can be laid in an S-shaped spiral to make full use of the bottom space of the third chamber 16, while improving the uniformity of the aeration pipe 51 under the MBR curtain-type hollow membrane module 41, so as to further improve the aeration efficiency.

[0071] In this embodiment, the blower 52 can be a commercially available centrifugal blower. The output end of the blower 52 is connected to the aeration pipe 51. The aeration pipe 51 guides the high-pressure airflow generated by the blower 52 to the area below the MBR curtain-type hollow membrane module 41. The gas forms tiny bubbles that move upward under their own weight, creating an upward flow that propels the water flow and causes the liquid to flow on the membrane surface, thereby improving purification efficiency. The upward flow of the bubbles has a washing effect, which can reduce the accumulation of fouling on the membrane surface, reduce membrane fouling and clogging, and extend the membrane's service life. Keeping the membrane surface clean can increase the membrane flux, i.e., the amount of water passing through the membrane per unit time, thus improving the system's treatment capacity. The bubbles generated by aeration can enhance the mixing of fluids within the reactor, which helps improve the biodegradation effect of wastewater and increases the contact opportunities for activated sludge. By reducing membrane fouling and increasing flux, the quality of the effluent can ultimately be improved to meet stricter discharge standards. Reducing membrane fouling can reduce the frequency of backwashing, thereby reducing energy consumption and saving backwashing water.

[0072] This embodiment provides an ultrafiltration membrane water purification device integrating flocculation, sedimentation, and membrane separation. It adopts a frame-type box structure, with the containing chamber divided into three functional chambers by partitions, achieving integrated water purification process and significantly saving space. A flocculation component 2 is installed in the first chamber 14, a sedimentation component 3 in the second chamber 15, and an MBR curtain-type hollow membrane module 41 in the third chamber 16. This achieves coordinated treatment of flocculation, sedimentation, and membrane separation, resulting in stable effluent quality with turbidity typically less than 1 NTU. The use of MBR curtain-type hollow membranes features high flux, high effluent quality, and a small footprint, with a flux per unit area of ​​10-20 L / (m²·h), effectively trapping bacteria and large molecular pollutants. An aeration system is installed below the membrane module 4, generating an upward flow of microbubbles, which effectively cleans the membrane surface, reduces membrane fouling and clogging, increases membrane flux, improves effluent quality, and reduces energy consumption.

[0073] Please see Figure 1 , Figure 2 and Figure 4 In some embodiments, the flocculation component 2 includes a first flocculation baffle 21, a second flocculation baffle 22, and a plurality of flocculation mesh groups 23. The first flocculation baffle 21 is disposed in the first chamber 14; the second flocculation baffle 22 is disposed in the first chamber 14, the first flocculation baffle 21 and the second flocculation baffle 22 are perpendicular to each other, and the first flocculation baffle 21 and the second flocculation baffle 22 divide the first chamber 14 into a plurality of flocculation chambers 24, which are connected in sequence; each flocculation mesh group 23 is disposed in one flocculation chamber 24, and the flocculation mesh group 23 includes a plurality of flocculation meshes, which are distributed vertically at intervals in the flocculation chamber 24; the water purification device also includes a water inlet pipe 7, which is connected to one of the flocculation chambers 24.

[0074] In this embodiment, the first flocculation baffle 21 and the second flocculation baffle 22 are arranged vertically. It is understood that the number of the first flocculation baffle 21 and the second flocculation baffle 22 can be set according to actual needs. For example, two first flocculation baffles 21 and two second flocculation baffles 22, through a vertically intersecting design, can divide the first chamber 14 into nine flocculation chambers 24; or, a vertically intersecting design of one first flocculation baffle 21 and two second flocculation baffles 22 can divide the first chamber 14 into six flocculation chambers 24. It is understood that when there are multiple first flocculation baffles 21, the multiple first flocculation baffles 21 are parallel and equally spaced. Similarly, when there are multiple second flocculation baffles 22, the multiple second flocculation baffles 22 are parallel and equally spaced. This results in multiple flocculation chambers 24 with the same capacity, allowing for multi-layered and uniform stirring of the water flow during flocculation, thus significantly improving flocculation efficiency.

[0075] Furthermore, each flocculation chamber 24 is equipped with a flocculation grid group 23, which includes multiple flocculation grids distributed at equal intervals within the flocculation chamber 24 and arranged vertically. During the upward or downward flow of water within the flocculation chamber 24, the water automatically passes through the flocculation grids, allowing impurities and coagulant in the water to be thoroughly mixed and larger flocs to be generated, thereby improving flocculation efficiency. It should be noted that the multiple flocculation chambers 24 are sequentially connected. To further improve the flocculation effect, the connection points between adjacent flocculation chambers 24 can be appropriately configured to extend the flow path of water within the multiple flocculation chambers 24, thereby enhancing the flocculation effect.

[0076] In this embodiment, the water purification device further includes an inlet pipe 7, which is connected to one of the flocculation chambers 24. It should be noted that if the flocculation chambers 24 are arranged in a connection order, the inlet pipe 7 is preferably connected to the first flocculation chamber 24. This maximizes the flow path of water within the flocculation chamber 24, thereby improving the flocculation effect, and also avoids water stagnation in multiple flocculation chambers 24.

[0077] In this embodiment, the flocculation component 2 achieves efficient flocculation treatment of water flow by connecting multiple flocculation chambers 24, flocculation grids, and a reasonable water inlet pipe 7. By setting multiple vertically intersecting flocculation baffles, the first chamber 14 is divided into multiple flocculation chambers 24, enabling multi-level stirring of water flow between different chambers, fully promoting the contact between impurities and coagulants, thereby significantly improving the flocculation effect. Reasonably setting the connection ports of adjacent flocculation chambers 24 can extend the flow path of water within multiple chambers, allowing water to remain sufficiently within the flocculation chambers 24, further improving flocculation efficiency. Setting multiple flocculation grids in each flocculation chamber 24, evenly distributed along the vertical direction, ensures uniform stirring of water flow in the vertical direction, avoiding insufficient flocculation in local areas. Directly connecting the water inlet pipe 7 to the first flocculation chamber 24 can maximize the flow path of water within the flocculation chamber 24, improving the overall flocculation effect, while also avoiding water retention between multiple chambers and simplifying the water inlet design.

[0078] Please see Figure 3 In some embodiments, a vortex assembly 8 is also included. The vortex assembly 8 is disposed between the water inlet pipe 7 and the flocculation chamber 24. The vortex assembly 8 includes a first water outlet pipe 81, a first vortex disk 82, a first vortex cover plate 84, and a first vortex baffle 83. The first vortex disk 82 is disc-shaped, and the first vortex cover plate 84 covers the first vortex disk 82. The first vortex cover plate 84 has a vortex chamber. The water inlet pipe 7 communicates with the vortex chamber along the tangent direction of the first vortex cover plate 84. The first vortex baffle 83 is spirally coiled in the vortex chamber from the edge of the first vortex disk 82 toward the central axis of the first vortex disk 82. The first water outlet pipe 81 is disposed at the central axis of the first vortex disk 82, and the other end of the first water outlet pipe 81 extends downward and communicates with the flocculation chamber 24.

[0079] In this embodiment, the vortex assembly 8 is disposed between the water inlet pipe 7 and the flocculation chamber 24. It can be understood that the flocculation chamber 24 here refers to the flocculation chamber 24 connected to the water inlet pipe 7. The vortex assembly 8 is as follows... Figure 3 As shown, it specifically includes a first outlet pipe 81, a first vortex disk 82, a first vortex cover plate 84, and a first vortex baffle 83. The first vortex disk 82 has a disc structure, and the first vortex cover plate 84 can be understood as a unidirectional closed cylindrical body. The diameter of the first vortex cover plate 84 matches the diameter of the first vortex disk 82, thus forming a vortex chamber between the first vortex cover plate 84 and the first vortex disk 82. The first vortex baffle 83 is spirally distributed, as shown... Figure 3As shown, the first vortex baffle 83 spirals from the edge of the first vortex disk 82 toward the direction of the central axis of the first vortex disk 82, while the water inlet pipe 7 is connected to the vortex chamber along the tangent of the first vortex cover plate 84. Under the action of centripetal force, the water flow will rotate around the first vortex baffle 83 and finally converge at the central axis of the first vortex disk 82, and flow out through the first water outlet pipe 81. This process can reduce the head loss of the water flow during the transportation process and facilitate the subsequent flocculation operation.

[0080] In this embodiment, the vortex assembly 8 rotates and contracts the water flow before it enters the flocculation process. The vortex assembly 8 connects the inlet pipe 7 to the flocculation chamber 24. Utilizing the spiral-shaped first vortex baffle 83 within the vortex chamber, the inlet water flow is rotated and contracted, resulting in a more uniform flow before entering the flocculation chamber 24, which is beneficial for subsequent flocculation. This effectively reduces head loss before the water enters the flocculation chamber 24, improves water transport efficiency, and creates more favorable hydraulic conditions for subsequent flocculation operations.

[0081] Please see Figure 2 In some embodiments, the aeration pipe 51 is provided with multiple connection holes, and the aeration assembly 5 also includes an aeration nozzle group, which includes multiple aeration nozzles, each aeration nozzle communicating with a connection hole, and the aeration nozzle group is positioned toward the MBR curtain hollow membrane group 41.

[0082] This embodiment achieves uniform aeration of the entire area below the MBR curtain-type hollow membrane module 41 by setting multiple connection holes on the aeration pipeline 51 and installing an aeration nozzle at each connection hole. This decentralized aeration method ensures that the membrane surface is adequately flushed by air bubbles, avoiding insufficient aeration in local areas.

[0083] Please see Figure 2 and Figure 4 In some embodiments, the bottom of the first partition 12 is provided with a first connection opening, and the first chamber 14 and the second chamber 15 are connected through the first connection opening. The sedimentation assembly 3 also includes an inclined tube group 31, which includes multiple inclined tubes. The multiple inclined tubes are inclined at a certain angle to the shell 11. The inclined tube group 31 is set at a first preset height, which is higher than the setting height of the first connection opening. The inclined tube group 31 is used to block impurities in the liquid.

[0084] The first connection opening is lower than the first preset height of the inclined tube assembly 31, indicating that water enters the second chamber 15 from the bottom. After continuous water input, it comes into contact with the inclined tube assembly 31, which further settles and separates suspended particulate impurities in the water, improving the solid-liquid separation effect. The inclined tube assembly 31 can be understood as a honeycomb-like structure formed by splicing multiple honeycomb inclined tubes. When sewage passes through the inclined tubes, solid particles settle downwards under the action of gravity. At the same time, due to the inclined design of the inclined tubes, the settled particles can slide down the inclined surface and collect at the bottom of the tank. The inclined design increases the effective sedimentation area and shortens the sedimentation distance of the particles, thereby improving the sedimentation efficiency and adapting to more miniaturized water purification devices.

[0085] Please see Figure 2 and Figure 4 In some embodiments, the upper part of the second partition 13 is provided with a second connection opening, and the second chamber 15 and the third chamber 16 are connected through the second connection opening. The first preset height is lower than the setting height of the second connection opening. The sedimentation assembly 3 also includes an outlet weir 32 and a second outlet pipe 33. The outlet weir 32 is located above the inclined tube group 31, and part of the outlet weir 32 protrudes out of the second connection opening. The second outlet pipe 33 is located in the third chamber 16. The upper part of the second outlet pipe 33 is connected to the outlet weir 32, and the lower part of the second outlet pipe 33 extends downward to the bottom of the third chamber 16.

[0086] In this embodiment, a water outlet weir 32 is provided at the second connection opening, and the water outlet weir 32 is positioned above the inclined tube assembly 31. That is, the height of the second connection opening is higher than the first preset height. Thus, the water flow after sedimentation through the inclined tube assembly 31 reaches the height of the second connection opening, passes through the water outlet weir 32, enters the second connection opening, and enters the second water outlet pipe 33, thereby realizing the communication between the second chamber 15 and the third chamber 16. It can be understood that the water outlet weir 32 can be made into a long trough structure, and the two sides of the water outlet weir 32 can be made into a tooth shape to fully block the floating impurities remaining in the water flow. The second water outlet pipe 33 extends downward to the bottom of the third chamber 16 to guide the water flow and reduce the impact on the membrane module 4 during water transport.

[0087] Please see Figure 5In some embodiments, the device further includes a clean water tank 6, which is connected to a collecting pipe 44. The water purification device also includes a valve assembly comprising a first valve 91 and a second valve 92. The first valve 91 is located at the collecting pipe 44, and the second valve 92 is located on the aeration pipe 51. The clean water tank 6 can be used to store filtered clean water. The first valve 91, located at the collecting pipe 44, is used to control the opening and closing of the collecting pipe 44. Optionally, the first valve 91 can be a regulating valve with adjustable opening, or it can be a device integrating a pump and a valve to meet actual usage requirements. The second valve 92, located on the aeration pipe 51, is used to control the opening and closing of the aeration pipe 51. Similarly, the second valve 92 can be configured with reference to the type of the first valve 91; this embodiment does not impose any limitations on this.

[0088] Please see Figure 5 In some embodiments, a third outlet pipe is also included, which is connected to the manifold 44 and is used to output clean water. The first valve 91 is a backwash pump, and the valve assembly also includes a third valve 93, which is installed on the third outlet pipe and is used as a product water pump. In this embodiment, the third outlet pipe is connected to the manifold 44, so the water flow in the manifold 44 can be output to the water use area or water storage equipment through the third outlet pipe, and the clean water tank 6 can be used as a short-term storage for produced water. Optionally, the first valve 91 and the third valve 93 can be distinguished according to their functions. The first valve 91 is set as a backwash pump, and the third valve 93 is set as a product water pump. Correspondingly, the first valve 91 is used to pump the water in the clean water tank 6 from the manifold 44 into the MBR curtain hollow membrane module 41 to backwash the MBR curtain hollow membrane and maintain the membrane flux of the MBR curtain hollow membrane. The third valve 93 is a water pump, which, under normal operating conditions, pumps the water in the collection pipe 44 into the water consumption area to meet the water demand of the area. By setting the first valve 91 and the third valve 93, the direction of water flow can be switched under different conditions to meet the functional requirements of the water purification device under different conditions.

[0089] Please see Figure 2In some embodiments, the flocculation assembly 2 further includes a first drain pipe 25, which is disposed at the bottom of the first chamber 14 and is used to discharge wastewater from the first chamber 14; the sedimentation assembly 3 further includes a second drain pipe 34, which is disposed at the bottom of the second chamber 15 and is used to discharge wastewater from the second chamber 15; the membrane assembly 4 further includes a third drain pipe 45, which is disposed at the bottom of the third chamber 16 and is used to discharge wastewater from the third chamber 16. The arrangement of the first drain pipe 25, the second drain pipe 34, and the third drain pipe 45 allows wastewater from each treatment stage to be discharged in a timely manner, avoiding wastewater retention in each chamber. This timely discharge method can improve the overall wastewater treatment efficiency and ensure that each treatment unit operates in optimal condition.

[0090] Unlike existing technologies, the above technical solution includes an ultrafiltration membrane water purification device comprising a frame assembly 1, a flocculation assembly 2, a sedimentation assembly 3, a membrane assembly 4, and an aeration assembly 5. Integrating the flocculation assembly 2, sedimentation assembly 3, membrane assembly 4, and aeration assembly 5 within the frame assembly 1 reduces the overall footprint of the water purification device, adapting to the development needs of miniaturized and decentralized water purification systems. By combining flocculation, sedimentation, and ultrafiltration membranes, the impurity content in the water after flocculation and sedimentation is significantly reduced, thereby reducing the accumulation efficiency of impurities on the outer surface of the ultrafiltration membrane, decreasing the frequency of ultrafiltration membrane rinsing, maximizing the filtration advantages of the ultrafiltration membrane, improving water purification efficiency, and being energy-saving and environmentally friendly.

[0091] The above description is only a part of the embodiments of this utility model, and does not limit the scope of protection of this utility model. Any equivalent device or equivalent process transformation made based on the contents of this utility model specification and drawings, or directly or indirectly applied to other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An ultrafiltration membrane water purification device, characterized in that, include: A frame assembly includes a housing, a first partition, and a second partition. The housing has an accommodating cavity. The first partition and the second partition are sequentially spaced within the housing, and the first partition and the second partition divide the housing into a first chamber, a second chamber, and a third chamber. A flocculation component is disposed within the first chamber, and the flocculation component is used to flocculate the liquid entering the first chamber; A precipitation assembly is disposed within the second chamber, and the precipitation assembly is used to precipitate the liquid entering the second chamber; A membrane module is disposed in the third chamber. The membrane module includes an MBR curtain-type hollow membrane assembly, a base, a connecting frame, and a collecting pipe. The base is placed in the third chamber, and the MBR curtain-type hollow membrane assemblies are suspended on the base in a preset manner. The connecting frame is disposed above the MBR curtain-type hollow membrane assemblies and is connected to the MBR curtain-type hollow membrane assemblies. The collecting pipe is connected to the connecting frame. The membrane module is used to filter the liquid in the third chamber to obtain clean water, and outputs the clean water from the connecting frame and the collecting pipe. The aeration assembly includes an aeration pipe and a blower. The aeration pipe is located below the base, and the output end of the aeration pipe is oriented toward the MBR curtain-type hollow membrane module.

2. The ultrafiltration membrane water purification device according to claim 1, characterized in that, The flocculation component includes: A first flocculation baffle is disposed within the first chamber; A second flocculation baffle is disposed in the first chamber. The first flocculation baffle is perpendicular to the second flocculation baffle. The first flocculation baffle and the second flocculation baffle divide the first chamber into multiple flocculation chambers, and the multiple flocculation chambers are connected in sequence. Multiple flocculation grid groups, each flocculation grid group is set in a flocculation chamber, the flocculation grid group includes multiple flocculation grids, and the multiple flocculation grids are distributed at intervals along the vertical direction in the flocculation chamber; The water purification device also includes: The water inlet pipe is connected to one of the flocculation chambers.

3. The ultrafiltration membrane water purification device according to claim 2, characterized in that, Also includes: A vortex assembly is disposed between the inlet pipe and the flocculation chamber. The vortex assembly includes a first outlet pipe, a first vortex disk, a first vortex cover plate, and a first vortex baffle plate. The first vortex disk is disc-shaped, and the first vortex cover plate covers the first vortex disk. The first vortex cover plate has a vortex chamber. The inlet pipe communicates with the vortex chamber along the tangential direction of the first vortex cover plate. The first vortex baffle plate is spirally arranged in the vortex chamber from the edge of the first vortex disk toward the central axis of the first vortex disk. The first outlet pipe is disposed at the central axis of the first vortex disk, and the other end of the first outlet pipe extends downward and communicates with the flocculation chamber.

4. The ultrafiltration membrane water purification device according to claim 1, characterized in that, The aeration pipeline is provided with multiple connection holes, and the aeration assembly further includes: An aeration nozzle assembly includes multiple aeration nozzles, each of which is connected to a connection hole, and the aeration nozzle assembly is positioned toward the MBR curtain-type hollow membrane assembly.

5. The ultrafiltration membrane water purification device according to claim 1, characterized in that, The bottom of the first partition is provided with a first connection opening, and the first chamber and the second chamber are connected through the first connection opening. The sedimentation assembly further includes: An inclined tube assembly includes multiple inclined tubes, which are inclined at a certain angle to the housing. The inclined tube assembly is set at a first preset height, which is higher than the setting height of the first connection opening. The inclined tube assembly is used to block impurities in the liquid.

6. The ultrafiltration membrane water purification device according to claim 5, characterized in that, The upper part of the second partition is provided with a second connection opening, and the second chamber and the third chamber are connected through the second connection opening. The first preset height is lower than the setting height of the second connection opening. The sedimentation assembly further includes: A water outlet weir is located above the inclined tube assembly, and a portion of the water outlet weir protrudes from the second connection opening; A second water outlet pipe is installed in the third chamber. The upper part of the second water outlet pipe is connected to the water outlet weir, and the lower part of the second water outlet pipe extends downward to the bottom of the third chamber.

7. The ultrafiltration membrane water purification device according to claim 1, characterized in that, The number of the MBR curtain-type hollow membrane modules is multiple, and the multiple MBR curtain-type hollow membrane modules are arranged at equal intervals on the base; Each MBR curtain-type hollow membrane assembly includes multiple MBR curtain-type hollow membranes arranged in parallel, and the end of each MBR curtain-type hollow membrane is connected to the connecting frame.

8. The ultrafiltration membrane water purification device according to claim 1, characterized in that, Also includes: The clean water tank is connected to the collection pipe; The water purification device also includes: The valve assembly includes a first valve and a second valve, wherein the first valve is disposed at the manifold and the second valve is disposed on the aeration pipeline.

9. The ultrafiltration membrane water purification device according to claim 8, characterized in that, Also includes: The third water outlet pipe is connected to the collecting pipe, and the third water outlet pipe is used to output clean water. The first valve is a backwash pump, and the valve assembly further includes: The third valve is installed on the third outlet pipe, and the third valve is a water production pump.

10. The ultrafiltration membrane water purification device according to claim 1, characterized in that, The flocculation component also includes: The first drain pipe is located at the bottom of the first chamber and is used to discharge sewage from the first chamber. The precipitation component also includes: The second drain pipe is located at the bottom of the second chamber and is used to discharge sewage from the second chamber. The membrane assembly further includes: The third drain pipe is located at the bottom of the third chamber and is used to discharge sewage from the third chamber.

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