Membrane filtration water purification module and river water integrated purification device

Abstract

The present invention discloses a membrane filtration water purification module and a river water integrated purification device, comprising a membrane frame and a plurality of membrane components, wherein the membrane frame comprises an upper frame, a lower frame and a movable frame, wherein the upper frame, the movable frame and the lower frame are arranged from top to bottom, the upper frame and the lower frame are relatively fixed, and the movable frame can be adjusted up and down relative to the lower frame; shaft bodies are fixed on both sides of the movable frame, the two shaft bodies are arranged horizontally and coaxially, the axis of the shaft body is located in the middle of the movable frame, and the lower frame is fixed with two connecting seats, the connecting seats are provided with linkage grooves running up and down, the shaft body extends into the linkage groove, can slide up and down in the linkage groove, and can rotate axially in the linkage groove. The present invention can use river water as raw water, perform solid-liquid separation through membrane components, and then be supplemented with excessive aeration to purify the water body, can effectively remove impurities such as suspended matter and bacterial colonies in the water body, obtain relatively clean water, and realize efficient purification and utilization of river water.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification equipment, and more specifically, to a membrane filtration water purification module and an integrated river water purification device. Background Art

[0002] At present, municipal greening water in cities usually directly uses tap water as the water source. Due to the large amount of water used and the fact that the quality of tap water is far superior to the water requirements of municipal greening water, there is a lot of waste. With the management of the water environment, the quality of the water environment is continuously and steadily improving. Using river water as a water source can basically meet the water needs of urban greening after water purification, thereby reducing the waste of tap water in the existing urban greening water.

[0003] River water is used as a water source. During the treatment process, membrane filtration is usually used for purification. The membrane filtration component can generally choose MBR hollow fiber curtain membrane, and its filtration parameters can basically meet the requirements of river water purification. However, during the use of MBR hollow fiber curtain membrane, it is easy to cause blockage problems, especially on the outer surface of the hollow fiber, which is directly in contact with external suspended matter and bacterial colonies, and is easy to accumulate on the outer surface of the hollow fiber, causing blockage and affecting subsequent normal water purification. After using it for a period of time, the membrane filtration component needs to be cleaned frequently to remove the aggregates attached to the outside of the hollow fiber to maintain the water purification efficiency of the membrane filtration component.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and to provide a membrane filtration water purification module and an integrated river water purification device, which can disturb the hollow fibers, increase the vibration amplitude, clean the surface of the membrane filtration component, and reduce the surface blockage of the membrane filtration component.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A membrane filtration water purification module, comprising a membrane frame and a plurality of membrane assemblies, wherein the membrane frame comprises an upper frame, a movable frame and a lower frame arranged from top to bottom, wherein the upper frame and the lower frame are relatively fixed, and the movable frame can move up and down relative to the lower frame; the membrane assembly comprises an upper tube body, a lower tube body and a plurality of hollow fibers, wherein the upper tube body is fixed to the upper frame body, the lower tube body is fixed to the movable frame body, and the two ends of the hollow fibers are connected to the upper tube body and the lower tube body respectively;

[0008] Axles are fixed on both sides of the movable frame, and a number of membrane assemblies are evenly distributed on both sides of the axis of the axles; two connecting seats are fixed on the lower frame, and the connecting seats are provided with linkage grooves running up and down, and the axles extend into the linkage grooves, and can slide along the linkage grooves and can rotate axially; the axles are located at the lowest end of the travel in the linkage grooves, and the hollow fibers are tensioned; the axles move upward along the linkage grooves, and the movable frame can reciprocate and swing around the axles, and the hollow fibers on both sides of the axles can switch between tension and relaxation bending;

[0009] The movable frame is fixedly connected with the hollow tube three, and the hollow tube three is located on the axis of the shaft body. The lower frame is installed with a plurality of top blocks, and the top blocks are located directly below the hollow tube three. The top blocks can move up and down, and are used to press and push the hollow tube three and the movable frame to move upward.

[0010] The present invention is further configured such that the lower frame is fixedly connected with hollow tube 2, the hollow tube 2 is located directly below hollow tube 3, a plurality of openings are provided on the upper side of the hollow tube 2, and the top block is arranged in the opening; the hollow tube 2 is connected with an aeration pipe, and the top block can be pushed upward by the air pressure in the hollow tube 2.

[0011] The present invention is further configured such that a guide sleeve is fixedly connected to the inner periphery of the opening, the guide sleeve extends downward into the hollow tube two, and the top block is slidably connected to the inner periphery of the guide sleeve up and down; a guide groove connecting the hollow tube two is opened on the outer periphery of the guide sleeve, the guide groove runs up and down, a guide block is slidably connected in the guide groove, and the guide block is fixedly connected to the outer periphery of the top block.

[0012] The present invention is further configured such that a plurality of aeration holes are provided on the outer periphery of the top block, and the aeration holes are connected to the second hollow tube for aerating the lower side of the hollow fiber.

[0013] The present invention is further configured such that the upper frame is fixedly connected to hollow tube one, the upper tube body is connected to hollow tube one, and the lower tube body is connected to hollow tube three; a connecting tube is fixedly connected to the upper side of hollow tube three, and the upper end of the connecting tube is connected to hollow tube one through flexible tube one.

[0014] The present invention is further configured such that the upper frame is fixedly connected with hollow tube one, the upper tube body is connected with hollow tube one, and the lower tube body is connected with hollow tube three;

[0015] The present invention is further configured such that a connecting pipe is fixedly connected to the upper side of the hollow tube three, a blocking block is fixedly connected to the inner upper end of the connecting pipe, a guide pipe is arranged at the center of the connecting pipe, the upper end of the guide pipe is fixedly connected to the blocking block, and the lower end of the guide pipe is fixedly connected to the hollow tube three;

[0016] The present invention is further configured such that a flexible tube 2 is provided between the hollow tube 2 and the hollow tube 3, the lower end of the flexible tube 2 is connected to the hollow tube 2, and the upper end of the flexible tube 2 is connected to the lower end of the guide tube;

[0017] The present invention is further configured such that an annular piston is sleeved between the connecting tube and the guide tube, the piston can slide along the axis of the connecting tube and the guide tube and realize sliding sealing, a piston cavity is formed between the blocking block and the piston, and a through hole connecting to the piston cavity is opened at the upper end of the guide tube.

[0018] The present invention is further configured such that a recessed portion is provided on the lower side of the hollow tube three, and the recessed portion is used to accommodate the flexible tube two.

[0019] The present invention is further configured such that a spring is sleeved on the outer periphery of the guide tube, the spring is located on the lower side of the piston, and the upper and lower ends of the spring elastically resist against the piston and the hollow tube respectively.

[0020] The present invention is further configured such that the hollow tube is connected to a water inlet pipe, a water supply pipe is connected to the outside of the water inlet pipe, the water supply pipe is connected to an external water source, and a valve body is installed on the water supply pipe, and the valve body is used to control the on and off of the water supply pipe.

[0021] Beneficial effects:

[0022] The lower tube body of the membrane assembly is supported by a movable frame to form a structure that can move up and down. The upper tube body and the lower tube body of the membrane assembly can produce relative movements. The hollow fibers of the membrane assembly can change between bending deformation and tension straightening. The hollow fibers can produce greater vibration movements, which can slow down the accumulation and blockage of impurities outside the hollow fibers.

[0023] The membrane components are evenly distributed on both sides of the axis of the shaft. When not affected by external forces, the movable frame is supported by the hollow fiber suspension to roughly maintain balance on both sides. Under the action of aeration, the pressure gas of aeration is introduced into the hollow tube 2, which can push the top block upward and push the movable frame upward. After rising, the lower side of the movable frame is supported by the top block, the hollow fiber is relaxed, and the stability of the movable frame decreases. Under the action of aeration and the water flow in the water body, the movable frame can produce reciprocating deflection around the shaft. During the deflection of the movable frame, the hollow fibers on both sides of the shaft can switch between the tension state and the relaxed bending state, disturbing the movement of the hollow fibers.

[0024] There is a sudden change in the motion state of the hollow fiber when it changes from a relaxed bending state to a tensioned state. A large vibration will be generated in the hollow fiber, which can remove the impurities accumulated on the surface of the hollow fiber and facilitate the vibration and shaking out of the impurities in the pores on the surface of the hollow fiber. Moreover, due to the dense arrangement of the hollow fibers, the relative friction between the relaxed bending states can be intensified when the hollow fiber is in a relaxed bending state. The bacteria and impurities outside the hollow fiber can be removed through contact friction, and the blockage of the hollow fiber can be slowed down. Through the conversion between the tensioned state and the relaxed bending state, the impurities in the pores on the surface of the hollow fiber can be accelerated to vibrate to the surface of the hollow fiber, and the impurities on the surface of the hollow fiber can be removed through relative friction. The two states cooperate with each other to enhance the impurity removal effect of the hollow fiber.

[0025] The present invention also provides an integrated river water purification device, comprising a housing, a raw water pipeline, a water pump assembly, an aeration assembly and the membrane filtration water purification module as described above, wherein the housing comprises a raw water tank and a clean water tank, the raw water tank is connected to the raw water pipeline, the membrane filtration water purification module is arranged in the raw water tank, the water pump assembly comprises an inlet pipe, an outlet pipe and a water pump, the inlet pipe connects the membrane filtration water purification module and the water inlet of the water pump, the outlet pipe connects the water outlet of the water pump and the clean water tank, and the water in the raw water tank filtered and separated by the membrane filtration water purification module can be pumped to the clean water tank through the water pump assembly; the aeration assembly comprises an aeration pipe, the aeration pipe extends into the raw water tank, and is connected to the hollow pipe 2 for conveying gas to the hollow pipe 2.

[0026] This solution adopts the above-mentioned membrane filtration water purification module, so this solution also has all the effects of the membrane filtration water purification module. The device can purify river water, remove suspended solids, colloids and other tiny particulate matter, such as algae, bacteria, viruses, etc., and obtain clean water after filtration and separation. Finally, the purified clean water can be used, for example, for municipal and greening use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of an integrated river water purification device in the first embodiment;

[0028] Figure 2 This is a cross-sectional view of an integrated river water purification device in the first embodiment;

[0029] Figure 3 This is a schematic diagram of the structure of the raw water pipeline, water pump assembly and aeration assembly in the first embodiment;

[0030] Figure 4 This is a three-dimensional diagram of a membrane filtration water purification module in the first embodiment;

[0031] Figure 5 This is a front view of a membrane filtration water purification module in the first embodiment;

[0032] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0033] Figure 7 for Figure 5 Sectional view at AA;

[0034] Figure 8 for Figure 7 Enlarged view of point B in the middle;

[0035] Fig. 9 It is a schematic diagram of the structure of the lower frame and the movable frame in the separated state in the first embodiment;

[0036] Fig.10 It is a cross-sectional view of the membrane filtration water purification module in Example 2;

[0037] Fig.11 It is a schematic diagram of the structure of the connecting tube, the guide tube and the piston in the second embodiment.

[0038] Reference numerals: housing 1; raw water tank 101; clean water tank 102; raw water pipeline 2; water pump assembly 3; water inlet pipe 301; water supply pipe 3011; valve body 3012; water outlet pipe 302; water pump 303; flow meter 304; aeration assembly 4; aeration pipe 401; fan 402; air cylinder 403; membrane filtration water purification module 5; membrane frame 6; upper frame 601; lower frame 602; movable frame 603; hinge assembly 604; connecting seat 6041; linkage groove 6042; Axle body 6043; hollow tube 1 605; connecting tube 606; flexible tube 1 607; hollow tube 2 608; hollow tube 3 609; opening 6010; membrane assembly 7; upper tube body 701; lower tube body 702; hollow fiber 703; top block 8; aeration hole 801; guide sleeve 802; guide groove 803; guide block 804; guide tube 9; blocking block 901; piston 902; through hole 903; flexible tube 2 904; piston cavity 905; spring 906; recess 907. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Embodiment 1

[0041] This embodiment discloses a membrane filtration water purification module, referring to Figure 4 , Figure 5As shown, the membrane filtration water purification module 5 includes a membrane frame 6 and a plurality of membrane components 7. The membrane frame 6 is a frame structure and plays a supporting role. The membrane component 7 is an MBR hollow fiber curtain membrane. The membrane component 7 includes an upper tube body 701, a lower tube body 702 and a plurality of hollow fibers 703. The middle of the hollow fiber 703 can allow water to pass through, and filter holes are formed on the outside of the hollow fiber 703. After filtering through the hollow fiber 703, the river water can be filtered and separated.

[0042] The upper tube body 701 and the lower tube body 702 are roughly parallel to each other in an up-and-down distribution structure, and the hollow fiber 703 is in an up-and-down direction. The two ends of the hollow fiber 703 are respectively connected to the upper tube body 701 and the lower tube body 702, and are communicated with the lumens of the upper tube body 701 and the lower tube body 702.

[0043] The upper tube 701 is fixedly mounted on the membrane frame 6, and can support the upper part of the membrane assembly 7. The lower tube 702 is located at the lower side of the upper tube 701, and the lower tube 702 is roughly suspended; and the lower tube 702 can move up and down relative to the upper tube 701. Under the action of gravity, the lower tube 702 of the membrane assembly 7 forms a counterweight at the lower end of the hollow fiber 703, which can keep the hollow fiber 703 in a suspended state and basically maintain a tensioned vertical state.

[0044] During the aeration process, the aerated gas can exert an upward force on the hollow fiber 703 and the lower tube 702, thereby driving the lower tube 702 to move upward slightly. During this process, the distance between the upper tube 701 and the lower tube 702 will become shorter, and the hollow fiber 703 will be bent. After bending, relative frictional contact will be formed between the hollow fibers 703, thereby better removing impurities attached to the outside of the hollow fiber 703 and slowing down the accumulation and blockage of impurities on the outside of the hollow fiber 703. In addition, during the process of the hollow fiber 703 changing from bending to straightening, the hollow fiber 703 can produce a greater vibration action, thereby slowing down the accumulation and blockage of impurities on the outside of the hollow fiber 703.

[0045] The film frame 6 includes an upper frame 601, a lower frame 602 and a movable frame 603, which are arranged from top to bottom. The upper frame 601 and the lower frame 602 are generally quadrilateral frame structures, and the four corners of the upper frame 601 and the lower frame 602 are connected and fixed by vertical rods, thereby being able to keep the upper frame 601 and the lower frame 602 relatively fixed.

[0046] The movable frame 603 is located between the upper frame 601 and the lower frame 602 . The movable frame 603 is located on the upper side of the lower frame 602 and is close to the lower frame 602 .

[0047] The upper tube 701 is fixed to the upper frame 601 and can support the upper side of the membrane assembly 7 . The lower tube 702 is fixed to the movable frame 603 , and the lower side of the membrane assembly 7 can move in conjunction with the up and down movement of the movable frame 603 .

[0048] Reference Figure 5 , Figure 6 , Fig. 9 As shown, hinge assemblies 604 are installed on both sides of the movable frame 603, and the two hinge assemblies 604 can be used to connect with the lower frame 602, so that the movable frame 603 can move up and down on the upper side of the lower frame 602 and can produce a small rotation and swing.

[0049] Specifically, the hinge assembly 604 includes a connection seat 6041 and a shaft body 6043. The connection seat 6041 is fixed to the lower frame 602. The connection seat 6041 is provided with a linkage groove 6042. The linkage groove 6042 is in an up-down direction, and a semicircular structure is formed at the upper end of the linkage groove 6042. The shaft body 6043 is fixed to the movable frame 603. The outer diameter of the shaft body 6043 is adapted to the linkage groove 6042. The shaft body 6043 extends into the linkage groove 6042. The shaft body 6043 can slide up and down in the linkage groove 6042, and the shaft body 6043 can rotate around itself in the linkage groove 6042.

[0050] Furthermore, the shaft 6043 is fixed in the middle of the movable frame 603, and the movable frame 603 and the plurality of membrane assemblies 7 are evenly distributed on both sides of the axis of the shaft 6043, and can form a basically stable counterweight on both sides of the shaft 6043. Under the action of aeration and water flow, the two sides of the movable frame 603 can rotate and swing up and down around the shaft 6043. In this process, the hollow fibers 703 can be transformed between tension and bending, and can generate vibration. In addition, since the hollow fibers 703 are densely arranged, corresponding friction can also be generated between the hollow fibers 703. Through contact friction, bacteria and impurities outside the hollow fibers 703 can be removed more directly, and blockage of the hollow fibers 703 can be slowed down.

[0051] Reference Figure 4 As shown, the upper frame 601 is fixedly connected with a hollow tube 1 605, which is located in the middle of the upper frame 601, and the membrane assembly 7 is respectively located on both sides of the hollow tube 1 605. The water inlet pipe 301 is connected with the hollow tube 1 605, and the upper tube body 701 is connected with the hollow tube 1 605. The movable frame 603 is fixedly connected with a hollow tube 3 609, which is located in the middle of the movable frame 603, and the lower tube body 702 is connected with the hollow tube 3 609.

[0052] The membrane filtration water purification module in this embodiment is used in conjunction with the water pump assembly 3. Under the extraction action of the water pump assembly 3, negative pressure can be formed in the hollow fiber 703. Water outside the membrane assembly 7 can be extracted into the hollow fiber 703 to achieve filtration and separation, and then flow along the upper tube body 701, the hollow tube 605 and the water inlet pipe 301, and then pass through the water pump 303. The filtered water can be transported to the clean water tank 102 through the outlet pipe 302 to achieve pumping and circulation of water.

[0053] Reference Figure 7 , Figure 8 , Fig. 9 As shown, the lower frame 602 is fixedly connected with the hollow tube 2 608, and the hollow tube 2 608 is located in the middle position of the lower frame 602. The hollow tube 1 605, the hollow tube 2 608 and the hollow tube 3 609 are in a vertically opposite structure.

[0054] The aeration pipe 401 is connected to the hollow pipe 2 608. The aeration gas output by the aeration component 4 can be output upward through the hollow pipe 2 608, and then can push the hollow pipe 3 609 on the upper side of the hollow pipe 2 608 to move upward, which can drive the entire movable frame 603 and the lower part of the membrane component 7 to move upward, and then can realize the up and down movement of the lower side of the membrane component 7, thereby improving the vibration action of the membrane component 7.

[0055] A plurality of openings 6010 are provided on the upper side of the second hollow tube 608, and a top block 8 is provided at the opening 6010, and the top block 8 can move up and down at the opening 6010. When the aeration assembly 4 is working, a large amount of gas can be introduced into the second hollow tube 608, and a large air pressure is generated in the second hollow tube 608. Under the effect of the air pressure in the second hollow tube 608, the top block 8 can be pushed upward.

[0056] During the process of pushing the top block 8 upward, it can press and push the movable frame 603 upward, thereby driving the movable frame 603 and the lower part of the membrane assembly 7 to move upward. After the movable frame 603 moves upward, it is only supported by the top block 8. The movable frame 603 becomes unstable and will produce reciprocating deflection around the shaft 6043, exacerbating the vibration and friction of the hollow fiber 703 of the membrane assembly 7.

[0057] In addition, a plurality of aeration holes 801 are provided on the outer periphery of the top block 8, and the interior of the top block 8 is hollow and the lower side is open. The aeration holes 801 can be connected to the hollow tube 2 608 through the internal cavity of the top block 8. The aeration holes 801 can output gas to the outside and exert aeration effect on the lower side of the membrane assembly 7, which can drive the hollow fibers 703 of the membrane assembly 7 to vibrate.

[0058] Reference Figure 8As shown, a guide sleeve 802 is fixedly connected to the inner periphery of the opening 6010, and the guide sleeve 802 extends downward into the hollow tube 608. The top block 8 is slidably connected to the inner periphery of the guide sleeve 802 up and down, so that the top block 8 can maintain a stable up and down movement, playing a guiding role.

[0059] A guide groove 803 is provided on the outer periphery of the guide sleeve 802, the guide groove 803 is connected to the hollow tube 608, and the guide groove 803 is in an up-down direction, and can guide the top block 8 through the guide groove 803. Specifically, a guide block 804 is slidably connected in the guide groove 803, and the guide block 804 is fixedly connected to the outer periphery of the top block 8, and guides the top block 8 up and down to maintain the movement stability of the top block 8.

[0060] Reference Figure 7 , Fig. 9 As shown, two groups of top blocks 8 are arranged on the upper side of the second hollow tube 608, and the two groups of top blocks 8 are arranged along the axial direction of the shaft body 6043. In addition, the third hollow tube 609 is located above the axis of the shaft body 6043, and the top blocks 8 are opposite to the third hollow tube 609 in the vertical direction. The top blocks 8 can press and push the third hollow tube 609 upward, thereby pushing the movable frame 603 to move up and down.

[0061] Further, refer to Figure 7 , Fig. 9 As shown, the upper side of the hollow tube 3 609 is fixedly connected with a connecting tube 606, which is a hard tube body, and the upper end of the connecting tube 606 is connected to the hollow tube 1 605 through a flexible tube 1 607. The flexible tube 1 607 can produce adaptive flexible deformation, so that the movable frame 603 can move up and down smoothly, and thus can adapt to the movement and position change of the movable frame 603.

[0062] This embodiment also discloses a river water integrated purification device, referring to Figure 1-Figure 9 As shown, it includes a box body 1, a raw water pipeline 2, a water pump assembly 3, an aeration assembly 4 and the membrane filtration water purification module 5 as mentioned above, which can filter and separate river water, remove suspended matter and other impurities in the river water to obtain clean water, and then can extract and utilize the river water, for example, suitable for municipal and greening use.

[0063] Reference Figure 1 , Figure 2 As shown, the housing 1 includes a raw water tank 101 and a clean water tank 102, wherein the raw water tank 101 is connected to the raw water pipeline 2, and a submersible pump (not shown in the figure) is installed at the end of the raw water pipeline 2 away from the raw water tank 101, which can pump river water into the raw water tank 101, and the river water can be stored through the raw water tank 101. The clean water tank 102 can store purified clean water, and can realize the temporary storage of clean water.

[0064] Reference Figure 1 , Figure 2 , Figure 3 As shown, the membrane filtration water purification module 5 is arranged in the raw water pool 101. The membrane filtration water purification module 5 adopts MBR hollow fiber curtain membrane. The membrane pores are generally 0.05~0.1μm, which can remove suspended solids, colloids and other tiny particulate matter, such as bacteria, viruses, etc., and clean water can be obtained after filtration and separation.

[0065] The water pump assembly 3 includes an inlet pipe 301, an outlet pipe 302 and a water pump 303. The water pump 303 provides pumping power for the water between the raw water pool 101 and the clean water pool 102. The inlet pipe 301 connects the membrane filtration water purification module 5 and the water inlet of the water pump 303, and the outlet pipe 302 connects the water outlet of the water pump 303 and the clean water pool 102. The membrane filtration water purification module 5 is immersed in the raw water pool 101. Under the action of the water pump 303, the water in the raw water pool 101 can be extracted. Under the extraction action of the water pump 303, impurities such as suspended matter in the raw water pool 101 are blocked outside the membrane filtration water purification module 5, and relatively clean water can be extracted into the membrane filtration water purification module 5. The clean water filtered and separated by the membrane filtration water purification module 5 can enter the water inlet pipe 301, then pass through the water pump 303, and then be input into the clean water tank 102 from the water outlet pipe 302. The clean water can be stored in the clean water tank 102 for subsequent use.

[0066] Liquid level sensors may be installed in the raw water tank 101 and the clean water tank 102 to detect the water levels in the raw water tank 101 and the clean water tank 102. In addition, a flow meter 304 may be installed at the outlet pipe 302 to detect the water flow rate drawn by the water pump 303. The water flow rate may be used to conveniently obtain and record the amount of water purified by the membrane filtration water purification module 5.

[0067] The aeration component 4 can aerate the raw water tank 101. On the one hand, it can increase the oxygen content in the raw water tank 101, thereby improving the aerobic reaction in the raw water tank 101, and helping to decompose the organic matter in the raw water tank 101. By controlling the aeration process, the regulation of aerobic and anaerobic reactions in the raw water tank 101 can be achieved. On the other hand, through the aeration effect, aeration bubbles can be formed in the raw water tank 101, and water flow and vibration can be formed in the water, thereby removing bacteria, attachments, etc. attached to the surface of the membrane filtration water purification module 5, and reducing the blocking effect of the membrane filtration water purification module 5.

[0068] The aeration assembly 4 includes a blower 402, an air cylinder 403 and an aeration pipe 401. The blower 402 is a Roots blower. The output end of the Roots blower is connected to the air cylinder 403. The output end of the air cylinder 403 is connected to the aeration pipe 401. The raw water tank 101 can be aerated through the aeration pipe 401. Specifically, the aeration pipe 401 extends into the raw water tank 101 and extends to the lower side of the membrane assembly 7, so that the lower side of the membrane assembly 7 can be aerated.

[0069] Embodiment 2

[0070] This embodiment discloses a membrane filtration water purification module. Based on the first embodiment, Figure 5 , Fig.10 , Fig.11 Provide detailed explanation.

[0071] Reference Figure 5 As shown, the water inlet pipe 301 is connected to a water supply pipe 3011, which is connected to an external water source, and can generally be directly connected to a tap water pipe, and has a certain pressure. In addition, a valve body 3012 is installed on the water supply pipe 3011, and the valve body 3012 can realize the on-off switching of the water supply pipe 3011.

[0072] The water supply pipe 3011 can replenish water into the water inlet pipe 301 before the water pump 303 is started, so that the water inlet pipe 301 and the water pump 303 can be filled with water, so that the water pump 303 can work smoothly. Moreover, the water source connected to the water supply pipe 3011 has a certain pressure, and the water in the water inlet pipe 301 will also flow back to the hollow fiber 703 of the membrane assembly 7, so that the hollow fiber 703 can be replenished with water. A higher pressure is formed in the hollow fiber 703, which can form a flow from the fiber inner cavity to the fiber outer periphery in the hollow fiber 703, and then can play a role of backwashing the hollow fiber 703. In the process of backwashing, the air in the hollow fiber 703 can also be discharged, and a state of being substantially filled with water can be formed between the hollow fiber 703 and the water supply pipe 3011, which is conducive to the subsequent self-priming and pumping work of the water pump 303.

[0073] Reference Fig.10 , Fig.11 As shown, a block 901 is fixedly connected to the inner upper end of the connecting tube 606, and a sealing barrier can be formed in the connecting tube 606 through the block 901, and a fixed support can be formed in the connecting tube 606. The passage of the connecting tube 606 and the flexible tube 607 can be cut off by the block 901.

[0074] A guide tube 9 is provided at the center of the connecting tube 606, and the guide tube 9 is coaxially distributed with the connecting tube 606. The upper end of the guide tube 9 is fixedly connected to the block 901, and the lower end of the guide tube 9 is fixedly connected to the hollow tube 3 609, so that the guide tube 9 can be stably maintained in the middle position.

[0075] A flexible tube 2 904 is provided between the hollow tube 2 608 and the hollow tube 3 609, the lower end of the flexible tube 2 904 is connected to the hollow tube 2 608, and the upper end of the flexible tube 2 904 is connected to the lower end of the guide tube 9. The hollow tube 2 608 and the connecting tube 606 can be connected through the flexible tube 2 904, and the flexible tube 2 904 can produce adaptive flexible bending deformation to adapt to the movement of the movable frame 603. In addition, a recessed portion 907 is provided on the lower side of the hollow tube 3 609, and the flexible tube 2 904 can be accommodated through the recessed portion 907, so that when the hollow tube 3 609 and the hollow tube 2 608 are pressed against each other, the two can be pressed stably, and the recessed portion 907 can make way for the flexible tube 2 904 to adapt to the relative movement of the movable frame 603.

[0076] A piston 902 is sleeved between the connecting tube 606 and the guide tube 9, and the piston 902 can slide along the axis of the connecting tube 606 and the guide tube 9. The piston 902 is annular in structure, and the inner periphery of the piston 902 is slidingly sealed with the outer periphery of the guide tube 9, and the outer periphery of the piston 902 is slidingly sealed with the inner periphery of the connecting tube 606, so that the piston 902 can realize a piston sealing structure.

[0077] A piston cavity 905 is formed between the block 901 and the piston 902 . A through hole 903 is formed at the upper end of the guide tube 9 , and the through hole 903 is connected to the piston cavity 905 .

[0078] The outer periphery of the guide tube 9 is sleeved with a spring 906, which is located at the lower side of the piston 902. The upper and lower ends of the spring 906 elastically resist the piston 902 and the hollow tube 909, respectively, and the spring 906 can exert an upward elastic force on the piston 902. The spring 906 can push the piston 902 to achieve elastic reset.

[0079] In this embodiment, the water pump 303 is a self-priming pump. When it is started, supplementary water is first input into the water inlet pipe 301, the water pump 303 and the membrane assembly 7 through the water replenishment pipe 3011, so that the inside can be roughly filled with water. The water input by the water replenishment pipe 3011 enters the membrane assembly 7, and forms a water flow from top to bottom in the hollow fiber 703 of the membrane assembly 7;

[0080] At the same time, the aeration assembly 4 works, and the fan 402 sends air to the aeration pipe 401, forming a high-pressure environment in the hollow pipe 2 608, and the gas can enter the piston chamber 905 along the flexible pipe 2 904 and the guide pipe 9, and a high-pressure environment is also formed in the piston chamber 905. The high-pressure gas in the piston chamber 905 can push the piston 902 to move downward, push the water in the lower half of the connecting pipe 606 downward, enter the hollow pipe 3 609 from the lower half of the connecting pipe 606, and then enter the membrane assembly 7 from the hollow pipe 3 609, forming a bottom-up water flow in the hollow fiber 703 of the membrane assembly 7; in the hollow fiber 703, the upper and lower water flows act against each other, which can form a higher pressure in the hollow fiber 703, increase the backwashing effect in the hollow fiber 703, and also discharge the gas accumulated in the hollow fiber 703. After the equipment stops running, the spring 906 can push the piston 902 to reset in preparation for the subsequent startup process.

[0081] Embodiment 3

[0082] The present embodiment discloses a method for purifying and utilizing river water. The integrated river water purification device in the first embodiment is used to purify river water, and can remove suspended solids, colloids and other tiny particulate matter, such as algae, bacteria, viruses, etc., and can obtain clean water after filtration and separation. Finally, the purified clean water can be utilized, for example, for use in municipal greening.

[0083] During the treatment process, river water can be input into the raw water pool 101 through the raw water pipeline 2, and the membrane filtration water purification module 5 can separate and filter the water in the raw water pool 101. The water in the raw water pool 101 filtered and separated by the membrane filtration water purification module 5 can be pumped into the clean water pool 102 through the water pump assembly 3. The clean water pool 102 can store clean water for use by the standby water equipment.

[0084] When obtaining river water, try to choose river water with better water quality to control the quality of raw water, and remove larger impurities such as sand and gravel in the river water through the filter. Generally, the suspended solids content of the incoming water is controlled at less than 100 mg / L, the turbidity is controlled at less than 100 NTU, and the pH value is controlled at 6-9.

[0085] The water quality of purified and filtered water is improved. Generally, the turbidity of the purified water is controlled at less than or equal to 1NTU, the total colony count is controlled at less than or equal to 100CFU / mL, and the pH value is controlled at 6-9.

[0086] In order to monitor the turbidity of the clean water, a turbidity meter can be installed in the water inlet pipe 301 of the water pump assembly 3 or in the clean water tank 102, so as to conveniently monitor the turbidity of the clean water and determine whether the membrane filtration water purification module 5 can work normally.

[0087] In order to control the colony content of the clean water, disinfectants (such as sodium hypochlorite, etc.) can be added to the raw water tank 101 and the clean water tank 102 during the treatment process, so that the raw water and the clean water can be disinfected separately to remove the colony content therein, thereby ensuring that the output clean water is healthy and safe and can meet the standards of subsequent water use occasions.

[0088] During the treatment process, the aeration component 4 works intermittently. During the aeration process, gas can be introduced into the raw water pool 101, forming a water flow in the raw water pool 101, so that the hollow fibers 703 of the membrane component 7 can vibrate and contact each other, slowing down the accumulation of bacteria and impurities on its surface. Moreover, during the startup of the aeration component 4, the air pressure in the hollow tube 2 608 suddenly changes, which can form a large upward driving force on the top block 8, thereby increasing the activity of the membrane component 7. For example, during the day, the municipal and greening water trucks use water more frequently, and the water purification pressure of the equipment is relatively high. The aeration component 4 can work for 9 minutes and stop for 1 minute, forming an intermittent start-stop state; at night, the municipal and greening water trucks stop working and stop taking water. The algae and other organic matter in the raw water pool 101 can be decomposed through excessive aeration, and there is sufficient time for purification and decomposition. In addition, the oxygen content in the raw water tank 101 can be controlled by controlling the duration and frequency of aeration, thereby switching between aerobic and anaerobic environments, which helps to decompose organic matter in the raw water tank 101.

[0089] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A membrane filtration water purification module, characterized in that: The membrane frame (6) comprises a membrane frame (6) and a plurality of membrane assemblies (7), wherein the membrane frame (6) comprises an upper frame (601), a movable frame (603) and a lower frame (602) arranged from top to bottom, wherein the upper frame (601) and the lower frame (602) are relatively fixed, and the movable frame (603) can move up and down relative to the lower frame (602); the membrane assembly (7) comprises an upper tube (701), a lower tube (702) and a plurality of hollow fibers (703), wherein the upper tube (701) is fixed to the upper frame (601), the lower tube (702) is fixed to the movable frame (603), and the two ends of the hollow fibers (703) are respectively connected to the upper tube (701) and the lower tube (702); A shaft (6043) is fixed on both sides of the movable frame (603), and a plurality of membrane assemblies (7) are evenly distributed on both sides of the axis of the shaft (6043); the lower frame (602) is fixed with two connecting seats (6041), and the connecting seats (6041) are provided with a linkage groove (6042) extending up and down, and the shaft (6043) extends into the linkage groove (6042), can slide along the linkage groove (6042) and can rotate axially; the shaft (6043) is located at the lowest end of the stroke in the linkage groove (6042), and the hollow fiber (703) is tensioned; the shaft (6043) moves upward along the linkage groove (6042), and the movable frame (603) can reciprocate and swing around the shaft (6043), and the hollow fibers (703) on both sides of the shaft (6043) can switch between tension and relaxation bending; The movable frame (603) is fixedly connected with the hollow tube three (609), and the hollow tube three (609) is located on the axis of the shaft body (6043). The lower frame (602) is equipped with a plurality of top blocks (8), and the top blocks (8) are located directly below the hollow tube three (609). The top blocks (8) can move up and down, and are used to press and push the hollow tube three (609) and the movable frame (603) to move upward; The lower frame (602) is fixedly connected to the second hollow tube (608), the second hollow tube (608) is located directly below the third hollow tube (609), the upper side of the second hollow tube (608) is provided with a plurality of openings (6010), and the top block (8) is arranged in the openings (6010); the second hollow tube (608) is connected to the aeration tube (401), and the top block (8) can be pushed upward by the air pressure in the second hollow tube (608); The top block (8) is provided with a plurality of aeration holes (801) on its outer periphery. The aeration holes (801) are connected to the second hollow tube (608) and are used for aeration at the lower side of the hollow fiber (703).

2. The membrane filtration water purification module according to claim 1, characterized in that: The inner periphery of the opening (6010) is fixedly connected with a guide sleeve (802), the guide sleeve (802) extends downward into the hollow tube (608), and the top block (8) is slidably connected to the inner periphery of the guide sleeve (802); the outer periphery of the guide sleeve (802) is provided with a guide groove (803) connected to the hollow tube (608), the guide groove (803) is in an up-and-down direction, and a guide block (804) is slidably connected in the guide groove (803), and the guide block (804) is fixedly connected to the outer periphery of the top block (8).

3. The membrane filtration water purification module according to claim 1, characterized in that: The upper frame body (601) is fixedly connected to hollow tube one (605), the upper tube body (701) is connected to hollow tube one (605), and the lower tube body (702) is connected to hollow tube three (609); a connecting tube (606) is fixedly connected to the upper side of hollow tube three (609), and the upper end of the connecting tube (606) is connected to hollow tube one (605) via a flexible tube one (607).

4. The membrane filtration water purification module according to claim 1, characterized in that: The upper frame body (601) is fixedly connected to the hollow tube one (605), the upper tube body (701) is connected to the hollow tube one (605), and the lower tube body (702) is connected to the hollow tube three (609); The upper side of the hollow tube three (609) is fixedly connected to a connecting tube (606), the inner upper end of the connecting tube (606) is fixedly connected to a blocking block (901), a guide tube (9) is arranged at the center of the connecting tube (606), the upper end of the guide tube (9) is fixedly connected to the blocking block (901), and the lower end of the guide tube (9) is fixedly connected to the hollow tube three (609); A flexible tube 2 (904) is provided between the hollow tube 2 (608) and the hollow tube 3 (609), the lower end of the flexible tube 2 (904) is connected to the hollow tube 2 (608), and the upper end of the flexible tube 2 (904) is connected to the lower end of the guide tube (9); An annular piston (902) is sleeved between the connecting tube (606) and the guide tube (9); the piston (902) can slide along the axis of the connecting tube (606) and the guide tube (9) to achieve sliding sealing; a piston cavity (905) is formed between the blocking block (901) and the piston (902); a through hole (903) connected to the piston cavity (905) is opened at the upper end of the guide tube (9).

5. The membrane filtration water purification module according to claim 4, characterized in that: The lower side of the hollow tube three (609) is provided with a recessed portion (907), and the recessed portion (907) is used to accommodate the flexible tube two (904).

6. The membrane filtration water purification module according to claim 4, characterized in that: The outer periphery of the guide tube (9) is provided with a spring (906), and the spring (906) is located at the lower side of the piston (902). The upper and lower ends of the spring (906) are elastically pressed against the piston (902) and the hollow tube three (609) respectively.

7. The membrane filtration water purification module according to claim 4, characterized in that: The hollow tube 1 (605) is connected to a water inlet pipe (301), and a water supply pipe (3011) is connected to the outside of the water inlet pipe (301). The water supply pipe (3011) is connected to an external water source, and a valve body (3012) is installed on the water supply pipe (3011). The valve body (3012) is used to control the on and off of the water supply pipe (3011).

8. An integrated river water purification device, characterized in that: The invention comprises a housing (1), a raw water pipeline (2), a water pump assembly (3), an aeration assembly (4) and a membrane filtration water purification module (5) as claimed in any one of claims 1 to 7, wherein the housing (1) comprises a raw water tank (101) and a clean water tank (102), the raw water tank (101) is connected to the raw water pipeline (2), the membrane filtration water purification module (5) is arranged in the raw water tank (101), the water pump assembly (3) comprises a water inlet pipe (301), a water outlet pipe (302) and a water pump (303), the water inlet pipe (301) is connected to the membrane The water inlet of the water filtration purification module (5) and the water pump (303) are connected, and the water outlet pipe (302) is connected to the water outlet of the water pump (303) and the clean water tank (102). The water in the raw water tank (101) filtered and separated by the membrane filtration water purification module (5) can be pumped to the clean water tank (102) through the water pump assembly (3); the aeration assembly (4) includes an aeration pipe (401), which extends into the raw water tank (101) and is connected to the hollow pipe 2 (608) for conveying gas to the hollow pipe 2 (608).

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