A MBR vibrating membrane frame with hydraulic flushing coordination

Abstract

The present invention relates to the field of sewage treatment, and specifically to an MBR vibrating membrane frame with hydraulic flushing coordination, which is composed of an outer frame and a plurality of inner frames equally spaced therein, each of the inner frames is symmetrically provided with two filter membranes, a clean water space is formed between the two filter membranes and the inner frame, each of the inner frames can move in the outer frame along the vertical direction, a driving assembly for synchronously driving all the inner frames to vibrate up and down is provided at the bottom of the outer frame, and an inlet pipe fitting and an outlet pipe fitting fixed to the outer frame are provided above and below each of the inner frames, respectively. The present invention forms a synergistic effect with the surrounding water flow through the up and down vibration of the inner frame, and cooperates with a scraper to timely separate the initially attached dirt, and at the same time draws gas into the water through the inlet pipe fitting, so that the formed gas-liquid mixture is intermittently flushed into the clean water space to perform secondary flushing on the filter membrane, thereby ensuring that the dirt accumulated on the surface and pores of the filter membrane is further separated.

Description

Technical Field

[0001] The invention relates to the field of sewage treatment, and in particular to a hydraulic flushing coordinated MBR vibrating membrane frame. Background Art

[0002] In the prior art, because the MBR filter membrane will separate impurities in sewage, an impurity layer will be formed on the surface of all MBR filter membranes during operation, or larger particles will be adsorbed on the MBR filter membrane, resulting in a decrease in the passing capacity of the MBR filter membrane. However, the maintenance of the MBR filter membrane is very complicated. Since the MBR filter membrane is installed in the reaction tank, when the membrane pore passing capacity of the MBR filter membrane decreases, the MBR filter membrane needs to be backwashed by water flow. In the prior art, the water in the filter tank is drained, the MBR filter membrane fixed on the bottom of the tank is disassembled, and then the MBR filter membrane is lifted out of the reaction tank and manually flushed by a high-pressure water gun to restore its filtering effect, resulting in low filtering efficiency and complicated operation of the filter tank.

[0003] The currently disclosed Chinese patent CN217646197U discloses a multi-directional vibration MBR membrane module vibration device, including a base, an outer frame, a membrane frame, a longitudinal vibration mechanism and a fixing mechanism; it also includes a transverse vibration mechanism; the longitudinal vibration mechanism includes a driving mechanism, a sliding mechanism, a hinge block, a hinge shaft, a first placement plate, a second placement plate, a first connecting rod and a protrusion; the first placement plate is fixedly arranged on the base; the second placement plate is arranged above the first placement plate; the sliding mechanism is arranged on both sides of the first placement plate; a driving mechanism for driving the sliding mechanism to move is arranged on the first placement plate; the hinge block is fixedly arranged on the sliding mechanism; the hinge shaft is fixedly arranged on one side of the hinge block; the protrusion is fixedly arranged on both sides of the second placement plate; the two ends of the first connecting rod are respectively hingedly connected to the hinge shaft and the protrusion The sliding mechanism includes a first slide groove, a through groove and a rack; the first slide groove is symmetrically arranged on both sides of the first placement plate in the length direction of the first placement plate; the through groove is opened on the side wall of one side of the first slide groove; the rack is slidably arranged on the first slide groove along the length direction of the first slide groove, and the driving mechanism includes a first rotation driver, a first gear, a second gear and a fixed shaft; the first rotation driver is fixedly arranged at the bottom of the first placement plate, and the output end of the first rotation driver is arranged on the first placement plate through; the first gear is fixedly arranged on the output end of the first rotation driver along the axis of the output of the first rotation driver; the fixed shaft is vertically and fixedly arranged on the first placement plate; the second gear is rotatably arranged on the fixed shaft along the extension direction of the axis of the fixed shaft, and the second gear is meshed with the first gear.

[0004] According to the above patent, the above patent realizes the multi-directional vibration function of the device through the transverse vibration mechanism and the longitudinal vibration mechanism. However, although the multi-directional vibration effectively separates the dirt on the membrane surface, the membrane vibrates in the water, so that the membrane relies on the power of the water flow, and the dirt on the membrane cannot be completely separated, and some suspended matter will still re-attach to its surface during the vibration of the membrane, resulting in poor dirt separation effect on the membrane. Therefore, there is a need for a membrane frame that cooperates with hydraulic flushing and vibration. Summary of the invention

[0005] In view of the problems existing in the prior art, a MBR vibrating membrane frame with hydraulic flushing coordination is provided. The invention forms a synergistic effect with the surrounding water flow through the up and down vibration of the inner frame, and cooperates with the scraper to timely separate the initially attached dirt. At the same time, gas is extracted into the water through the water inlet pipe, so that the formed gas-liquid mixture is intermittently flushed into the clean water space to perform secondary flushing on the filter membrane, thereby ensuring that the dirt accumulated on the surface and pores of the filter membrane is further separated.

[0006] In order to solve the problems of the prior art, the present invention provides a hydraulic flushing coordinated MBR vibrating membrane frame, which is composed of an outer frame and a plurality of inner frames equally spaced therein, each of the inner frames is symmetrically provided with two filter membranes, a clean water space is formed between the two filter membranes and the inner frame, each of the inner frames can move in the outer frame along the vertical direction, a driving assembly is provided at the bottom of the outer frame for synchronously driving all the inner frames to vibrate up and down, and an inlet pipe fitting with a pumping function fixed to the outer frame and a water outlet pipe fitting with a pumping function are provided above and below each of the inner frames, respectively, the inlet pipe fitting and the water outlet pipe fitting are respectively provided with a plurality of inlet conduits and outlet conduits vertically passing through the inner frame and extending to the inside thereof, a guide port for the inlet conduit and the outlet conduit to pass through is provided on the inner frame, when the filter membrane filters sewage, the driving assembly drives all the inner frames to vibrate, so that the filter membrane cooperates with the surrounding flowing water to separate dirt during the vibration process, and at the same time, the gas-liquid mixture formed by extracting gas introduced into the water through the inlet pipe fitting is flushed into the clean water space to flush the filter membrane for a second time.

[0007] Preferably, an auxiliary scraping assembly is provided on the outer surface of each filter membrane, and an intermediate channel for dirt to fall or float is left between every two adjacent auxiliary scraping assemblies. The auxiliary scraping assembly includes a plurality of scrapers evenly distributed along the vibration direction of the filter membrane, and all scrapers are fixedly connected to the outer frame. The two ends of the scraper extend to the left and right sides of the filter membrane respectively. When the inner frame vibrates, the filter membrane moves relative to the scraper, so that the dirt on the outer surface of the filter membrane is scraped off by the scraper in conjunction with the water flow.

[0008] Preferably, the scraper has an outer scraping portion that is in contact with the outer surface of the filter membrane, and a guide portion that is integrally connected to the outer scraping portion and extends upward, the upper surface of the outer scraping portion is a sliding surface that is inclined toward the outer side of the filter membrane, and the lower surface of the outer scraping portion is an upper sliding surface that is inclined toward the outer side of the filter membrane, and a sliding channel for sediment to fall is provided between the sliding surface of each outer scraping portion and the guide portion, and a drainage channel for suspended matter to float up is formed between the guide portions of adjacent scrapers and the upper sliding surfaces of the outer scraping portions.

[0009] Preferably, an aeration tube group for upward aeration is arranged in a matrix at the bottom of the outer frame so that the suspended matter follows the bubbles and moves away from the filter membrane along the guide portions of the adjacent scrapers and the upper sliding surfaces of the outer scraping portions in sequence.

[0010] Preferably, a recoil nozzle is fixedly provided between the water inlet conduit on the water inlet pipe fitting and the corresponding water outlet conduit on the water outlet pipe fitting, and a plurality of nozzles are provided on the recoil nozzle facing the inner surface of each filter membrane, the upper end of the recoil nozzle is an open end connected to the water inlet conduit, and the lower end of the recoil nozzle is a closed end connected to the water outlet conduit. The water inlet pipe fitting is specifically a gas-liquid mixing Venturi tube capable of extracting gas through the kinetic energy of the water itself, and a through hole is provided on the water outlet conduit in the area located in the clean water space.

[0011] Preferably, an upper plate located in the clean water space is fixedly connected between all the water inlet conduits on the water inlet pipe fittings, a lower plate located in the clean water space is fixedly connected between all the water outlet conduits on the water outlet pipe fittings, and a plurality of springs are fixedly connected between the inner frame and the upper and lower plates.

[0012] Preferably, all guide openings opened on the inner frame are fixedly provided with rubber sleeves sleeved on the corresponding water inlet conduits and water outlet conduits.

[0013] Preferably, both ends of the upper plate and the lower plate are rotatably connected with support wheels that contact the inner edge of the inner frame.

[0014] Preferably, the driving assembly includes a wave maker and lifting plates symmetrically arranged on both sides of the outer frame, and a float located on the water surface. Extension rods fixedly connected to the corresponding lifting plates extend outward on both sides of each inner frame. The lifting plates are fixedly connected to the floats. A linear guide rail for sliding connection of the floats is fixedly provided in a vertical direction on the outer frame.

[0015] Preferably, the outer frame is a grid plate type frame structure.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention promotes the synergistic effect between the filter membrane and the surrounding water flow through the vibration of the inner frame, thereby enhancing the fluidity of the water flow and reducing the dirt formed on the outer surface of the filter membrane. At the same time, the gas is drawn into the water through the water inlet pipe, so that the formed gas-liquid mixture is intermittently flushed into the clean water space to perform secondary flushing on the filter membrane, thereby accelerating the flow rate of the water flow in the clean water space, ensuring that the dirt accumulated on the surface and pores of the filter membrane is further separated, realizing efficient and automatic self-cleaning of the filter membrane, ensuring the continuous and efficient sewage treatment capacity of the filter membrane, and prolonging the service life of the filter membrane;

[0018] 2. The present invention uses a wave machine to cause the float to float on the water surface following the waves. Since the float is fixedly connected to the lifting plate, it drives all the inner frames to vibrate up and down along the direction of the linear guide rail following the float, so that the filter membrane maintains relative motion with the scraper during the vibration process. As the sewage passes through the filter membrane, the dirt deposited on the outer surface of the filter membrane is effectively separated from the filter membrane under the synergistic effect of the vibration and the scraper, so that the dirt falls to the bottom of the sewage pool or drifts with the water flow. Compared with the traditional electric or mechanical drive method, the natural wave power is used as the vibration source, which can save electricity to a certain extent and reduce the operating cost;

[0019] 3. The present invention makes the outer scraping part of the scraper close to the outer surface of the filter membrane, so that the separation of dirt and the filter membrane surface can be effectively promoted during the upward or downward vibration process. At the same time, the downward sliding channel between the outer scraping part and the guide part provides a smooth discharge path for the sediment, and the drainage channel between adjacent scrapers prompts the suspended matter to move away from the filter membrane and float upward, thereby achieving a double diversion effect for cleaning the dirt, preventing the possibility of secondary attachment of suspended matter and sediment after being separated from the filter membrane, avoiding the risk of clogging of the filter membrane, ensuring the continuous smooth flow of water, and improving the filtering effect of the filter membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural diagram of a hydraulic flushing-coordinated MBR vibrating membrane frame.

[0021] Figure 2 It is a partial plan cross-sectional view of a hydraulically flushed MBR vibrating membrane frame.

[0022] Figure 3 It is a partial three-dimensional structural cross-sectional view of a hydraulically flushed MBR vibrating membrane frame.

[0023] Figure 4 It is a three-dimensional structural diagram of a single inner frame, water inlet pipe fittings, water outlet pipe fittings and scraper of a hydraulic flushing coordinated MBR vibrating membrane frame.

[0024] Figure 5The present invention is a plan cross-sectional view of a single inner frame, a water inlet pipe, a water outlet pipe and a scraper of a hydraulic flushing coordinated MBR vibrating membrane frame.

[0025] Figure 6 It is a three-dimensional structural cross-sectional view of a single inner frame, water inlet pipe fittings, water outlet pipe fittings and scraper of a hydraulic flushing coordinated MBR vibrating membrane frame.

[0026] Figure 7 yes Figure 5 Plane section view at AA.

[0027] Figure 8 yes Figure 5 A cross-sectional view of the local three-dimensional structure at AA.

[0028] Fig. 9 yes Figure 7 An enlarged schematic diagram of point B.

[0029] Fig.10 yes Figure 6 Enlarged schematic diagram of point C.

[0030] The numbers in the figure are: 1. outer frame; 11. water inlet pipe; 111. water inlet conduit; 12. water outlet pipe; 121. water outlet conduit; 1211. through hole; 13. recoil nozzle; 131. nozzle; 2. inner frame; 21. upper plate; 211. support wheel; 22. lower plate; 23. spring; 24. rubber sleeve; 3. filter membrane; 4. water purification space; 5. drive assembly; 51. lifting plate; 511. extension rod; 52. float; 53. linear guide; 6. scraper; 61. outer scraper; 611. lower sliding surface; 612. upper sliding surface; 62. guide part; 621. falling channel; 622. drainage channel; 63. aeration pipe group. DETAILED DESCRIPTION

[0031] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] See also Figure 1-Figure 8As shown, a hydraulic flushing coordinated MBR vibrating membrane frame is composed of an outer frame 1 and a plurality of inner frames 2 equally spaced therein, each of the inner frames 2 is symmetrically provided with two filter membranes 3, a clean water space 4 is formed between the two filter membranes 3 and the inner frame 2, each of the inner frames 2 can move in the outer frame 1 along the vertical direction, a driving assembly 5 for synchronously driving all the inner frames 2 to vibrate up and down is provided at the bottom of the outer frame 1, and a water inlet pipe 11 with an air extraction function fixed to the outer frame 1 and a water pumping function are provided above and below each of the inner frames 2, respectively. The water outlet pipe fitting 12, the water inlet pipe fitting 11 and the water outlet pipe fitting 12 are respectively provided with a plurality of water inlet conduits 111 and water outlet conduits 121 which vertically pass through the inner frame 2 and extend to the inside thereof, and the inner frame 2 is provided with guide openings for the water inlet conduits 111 and the water outlet conduits 121 to pass through. When the filter membrane 3 filters sewage, the driving component 5 drives all the inner frames 2 to vibrate, so that the filter membrane 3 cooperates with the surrounding flowing water to separate dirt during the vibration process, and at the same time, the gas is extracted through the water inlet pipe fitting 11 and the gas-liquid mixture formed by introducing the gas into the water is flushed into the clean water space to perform secondary flushing on the filter membrane 3.

[0033] When the vibrating membrane frame is filtering sewage, the vibrating membrane frame is placed in a sewage pool, which is not shown in the figure. There are several vibrating membrane frames distributed in a matrix in the sewage pool. During the cleaning process of the filter membrane 3 on the vibrating membrane frame, there is no need to remove the vibrating membrane frame. As the sewage passes through the filter membrane 3, the microporous structure of the filter membrane 3 effectively intercepts the dirt and only allows clean water to pass through, thereby forming a clean water space 4. At this time, the driving component 5 is started, and all the inner frames 2 are synchronously driven to vibrate regularly in the vertical direction, which not only enhances the fluidity of water flowing through the filter membrane 3, but also promotes the dynamic contact between the filter membrane 3 and the water flow, which helps to loosen and remove the dirt layer formed in the early stage, reduces the accumulation of dirt on the surface of the filter membrane 3, and improves the filtration efficiency. As the filter membrane 3 filters, the water outlet pipe 12 located below the inner frame 2 uses the negative pressure principle to extract the filtered clean water. When the filter membrane 3 vibrates At the same time, gas is drawn into the water through the water inlet pipe 11, so that the formed gas-liquid mixture is flushed into the clean water space, so that the gas floats from the bottom, and the tiny bubbles formed in the water will produce additional disturbance effects during the rising process, thereby enhancing the turbulence of the water body, making the water flow passing through the surface of the filter membrane 3 more intense, and the high-speed water flow carries the strong kinetic energy generated by the bubbles to directly impact the impurities in the filter holes, promote separation, and perform secondary flushing on the filter membrane 3, thereby accelerating the flow rate of the water flow in the clean water space, and the force of the coordinated vibration makes the impurities deposited inside and on the surface of the membrane holes be effectively stripped off with the secondary flushing water flow, thereby improving the cleaning efficiency and extending the service life of the filter membrane 3. By accurately controlling the jet time, the filter membrane 3 is ensured to be thoroughly cleaned. At the same time, the dirt on the surface of the filter membrane 3 is treated in two stages to maintain the treatment effect and efficiency of the sewage in the next cycle.

[0034] See also Figure 1-Figure 8 As shown, an auxiliary scraping assembly is provided on the outer surface of each filter membrane 3, and an intermediate channel for dirt to fall or float is reserved between every two adjacent auxiliary scraping assemblies. The auxiliary scraping assembly includes a plurality of scrapers 6 distributed at equal intervals along the vibration direction of the filter membrane 3, and all scrapers 6 are fixedly connected to the outer frame 1. The two ends of the scraper 6 extend to the left and right sides of the filter membrane 3 respectively. When the inner frame 2 vibrates, the filter membrane 3 moves relative to the scraper 6, so that the dirt on the outer surface of the filter membrane 3 is scraped off by the scraper 6 in conjunction with the water flow.

[0035] During the sewage filtration process, as the inner frame 2 vibrates, the outer surface of the filter membrane 3 always remains cleaned by the auxiliary scraping component. When the inner frame 2 vibrates up and down under the control of the driving component 5, the filter membrane 3 moves relative to the fixed scraper 6. In this process, the dirt attached to the outer surface of the filter membrane 3 passes through the scraper 6, thereby scraping off the dirt layer attached to the outer surface of the filter membrane 3, so that it is separated from the surface of the filter membrane 3, and the dirt between adjacent filter membranes 3 falls to the bottom of the sewage pool through the middle channel or floats with the water flow, thereby improving the dirt removal efficiency. At the same time, in the process of secondary flushing of the filter membrane 3 by the gas-liquid mixture formed by extracting gas through the water inlet pipe 11, the continuous vibration of the inner frame 2 and the synergistic effect of the scraper 6 and the flushing water flow further strengthen the removal of stubborn dirt in the filter hole. With the assistance of the water flow, the residual impurities on the filter membrane 3 are more thoroughly separated, ensuring the continuous cleaning of the surface of the filter membrane 3 and reducing the decrease in filtration efficiency caused by dirt accumulation.

[0036] See also Figure 5-Figure 9 As shown, the scraper 6 has an outer scraping portion 61 that is in contact with the outer surface of the filter membrane 3, and a guide portion 62 that is integrally connected to the outer scraping portion 61 and extends upward, the upper surface of the outer scraping portion 61 is a sliding surface 611 that is inclined toward the outer side of the filter membrane 3, and the lower surface of the outer scraping portion 61 is an upper sliding surface 612 that is inclined toward the outer side of the filter membrane 3, and a sliding channel for sediment to fall is provided between the sliding surface 611 of each outer scraping portion 61 and the guide portion 62, and a drainage channel 622 for suspended matter to float up is formed between the guide portion 62 of the adjacent scraper 6 and the upper sliding surface 612 of the outer scraping portion 61.

[0037] When the vibrating membrane frame is filtering in sewage, the suspended matter moves away from the filter membrane 3 along the drainage channel 622 and floats up, while the sediment slides out through the downward channel and sinks. Specifically, in the process of sewage passing through the filter membrane 3, a large number of suspended particles are intercepted on the surface of the filter membrane 3. At this time, the up and down vibration of the inner frame 2 causes the filter membrane 3 and the scraper 6 to move relative to each other. The suspended matter is affected by the vibration and floats upward along the drainage channel 622 between adjacent scrapers 6, away from the surface of the filter membrane 3, effectively reducing the accumulation of suspended matter on the filter membrane 3. At the same time, as the water flow continues to pass, the sediment initially formed on the outer surface of the filter membrane 3 is gradually guided to the downward channel under the action of the downward sliding surface 611 of the scraper 6. The vibration of the inner frame 2 further promotes the speed at which the sediment slides along the downward sliding channel, and finally settles to the bottom of the sewage pool, which not only avoids the blockage of the pores of the filter membrane 3 by the sediment, but also reduces the impact on the filtration efficiency.

[0038] See also Figure 2-Figure 9 As shown, the bottom matrix of the outer frame 1 is provided with an aeration tube group 63 for upward aeration so that the suspended matter follows the bubbles and moves away from the filter membrane 3 along the guide portion 62 of the adjacent scraper 6 and the upper sliding surface 612 of the outer scraper 61 in sequence.

[0039] When the vibrating membrane frame is immersed in sewage for filtration, the aeration tube group 63 is in the starting state, and the bubbles are used to guide the suspended matter away from the filter membrane 3. The air lift effect is used to cause the suspended matter to adhere to the surface of the bubbles and then away from the surface of the filter membrane 3, thereby reducing the probability of secondary attachment of the suspended matter to the filter membrane 3 and optimizing the clean state of the outer surface of the filter membrane 3. Some attached sediments are washed away by the water flow through the downward channel and naturally slide down, thereby keeping the dirt away from the filter membrane 3 and ensuring that the filter membrane 3 is restored to the best filtration state.

[0040] See also Figure 2-Figure 8 As shown, a recoil nozzle 13 is fixedly provided between the water inlet conduit 111 on the water inlet pipe fitting 11 and the corresponding water outlet conduit 121 on the water outlet pipe fitting 12, and a plurality of nozzles 131 are provided on the recoil nozzle 13 toward the inner surface of each filter membrane 3, the upper end of the recoil nozzle 13 is an open end connected to the water inlet conduit 111, and the lower end of the recoil nozzle 13 is a closed end connected to the water outlet conduit 121, the water inlet pipe fitting 11 is specifically a gas-liquid mixing Venturi tube capable of extracting gas through the kinetic energy of the water itself, and a through hole 1211 is provided on the water outlet conduit 121 in the area located in the clean water space 4.

[0041] During normal filtering operation, sewage is filtered through the filter membrane 3. At this time, clean water is sucked out through the through hole 1211 on the outlet pipe 121. As the gas-liquid mixing venturi tube extracts gas through the hydraulic kinetic energy, that is, when the water flows through the gradually shrinking throat of the gas-liquid mixing venturi tube, the flow rate increases and the pressure decreases, thereby automatically extracting gas and mixing with the high-speed flowing water inside the gas-liquid mixing venturi tube to form a gas-liquid mixed fluid. This process does not require external power, and the kinetic energy of the hydraulic force itself is used to complete the gas suction and mixing. Subsequently, the mixed fluid passes through the diffusion section of the gas-liquid mixing venturi tube, the flow rate slows down, and the pressure recovers. However, at this time, the mixed fluid carries a higher kinetic energy due to the previous acceleration. This part of the high kinetic energy gas-liquid mixed fluid is directly guided to the recoil nozzle 13. A plurality of nozzles 131 opened on the recoil nozzle 13 are directed toward the filter membrane 3. In the direction of the inner surface, until the mixed fluid reaches the nozzle 131, it is ejected at a higher speed and pressure in a short time to form an intermittent jet, and the intermittent jet is realized by controlling the change of the water inlet flow rate of the gas-liquid mixing venturi tube, so that the injection process shows periodic strengthening and weakening. The local high pressure and high-speed water flow generated by the intermittent jet on the surface of the filter membrane 3 can have a strong scouring effect on the impurities accumulated inside the pores and on the surface of the filter membrane 3. The nozzle 131 is directly aimed at the inner surface of the filter membrane 3, ensuring the pertinence and effectiveness of the cleaning effect. Under the combined action of high-speed water flow and bubbles, not only the solid particles are loosened and removed, but also the stubborn sediments can be further peeled off through the micro-explosion effect generated by the bubble rupture. By reducing the accumulation of dirt on the filter membrane 3, the service life of the filter membrane 3 is extended, and the cost and maintenance frequency of frequent replacement of the filter membrane 3 are reduced.

[0042] See also Figure 2-Figure 8 and Fig.10 As shown, an upper plate 21 located in the clean water space 4 is fixedly connected between all the water inlet conduits 111 on the water inlet pipe fitting 11, a lower plate 22 located in the clean water space 4 is fixedly connected between all the water outlet conduits 121 on the water outlet pipe fitting 12, and a plurality of springs 23 are fixedly connected between the inner frame 2 and the upper plate 21 and the lower plate 22.

[0043] When the inner frame 2 is driven to move by the driving assembly 5, the inner frame 2 cooperates with the spring 23 to generate a vibration force in the outer frame 1, and the spring 23 can effectively absorb vibration and impact, reduce direct stress on the filter membrane 3, protect the filter membrane 3 from damage, ensure the stable working state of the filter membrane 3, and extend the service life.

[0044] See also Figure 5-Figure 8 and Fig.10 As shown, all guide openings opened on the inner frame 2 are fixedly provided with rubber sleeves 24 sleeved on the corresponding water inlet conduits 111 and water outlet conduits 121 .

[0045] The use of the rubber sleeve 24 effectively seals the connecting gap between the water inlet conduit 111 and the water outlet conduit 121 and the guide port of the inner frame 2, preventing water leakage under high pressure or vibration conditions, and ensuring that sewage can only pass through the filter membrane 3. As the inner frame 2 vibrates, the rubber sleeve 24 deforms accordingly, ensuring that even when the inner frame 2 is in a working state of continuous vibration, it can still maintain good sealing performance and at the same time does not hinder the free vibration of the inner frame 2.

[0046] See also Figure 5-Figure 6 and Fig.10 As shown, both ends of the upper plate 21 and the lower plate 22 are rotatably connected with support wheels 211 that contact the inner edge of the inner frame 2 .

[0047] The supporting effect of the support wheel 211 on the inner side of the inner frame 2 allows the inner frame 2 to contact and slide with the support wheel 211 during vibration, effectively preventing irregular shaking and improving the dynamic stability of the inner frame 2. Even if the flexibility of the rubber sleeve 24 causes the inner frame 2 to sway slightly, the support wheel 211 can ensure that the up and down vibration of the inner frame 2 is carried out in an orderly manner, avoiding damage to the filter membrane 3 due to excessive irregular vibration.

[0048] See also Figure 1-Figure 3 As shown, the driving assembly 5 includes a wave maker and lifting plates 51 symmetrically arranged on both sides of the outer frame 1, and a float 52 located on the water surface. Both sides of each inner frame 2 extend outward with extension rods 511 fixedly connected to the corresponding lifting plates 51. The lifting plates 51 are fixedly connected to the float 52. A linear guide rail 53 for sliding connection of the float 52 is fixedly provided on the outer frame 1 in a vertical direction.

[0049] The wave machine is not shown in the figure. The lifting plate 51 has a horizontal plate portion fixedly connected to all the extension rods 511, and a vertical plate portion fixedly connected to the float 52. When the wave machine is started, the wave machine will generate waves of specific shape and intensity according to the set program. The wave energy generated by the wave machine is transmitted to the water surface, so that the float 52 located on the water surface begins to float up and down with the waves. The up and down floating of the float 52 directly causes the lifting plate 51 to move up and down along the vertical linear guide rail 53, ensuring that the kinetic energy of the waves is effectively converted into the linear vibration of the lifting plate 51. The vibration of the lifting plate 51 is transmitted to each inner frame 2 through the extension rod 511. As the lifting plate 51 vibrates up and down, all the inner frames 2 connected thereto also vibrate synchronously in the vertical direction. The collective vibration mode can ensure that all filter membranes 3 can obtain a uniform and powerful cleaning effect.

[0050] See also Figure 1-Figure 3 As shown, the outer frame 1 is a grid plate type frame structure.

[0051] The grid plate frame structure has better air permeability and water permeability than the solid plate, effectively preventing water accumulation and reducing moisture accumulation, so as to facilitate the sewage to pass through all the filter membranes 3 and improve the filtration efficiency.

[0052] The present invention forms a synergistic effect with the surrounding water flow through the up and down vibration of the inner frame 2, thereby effectively inhibiting the adhesion of dirt on the outer surface of the filter membrane 3. The filter membrane 3 cooperates with the scraper 6 as the inner frame 2 vibrates to timely separate the initially attached dirt. The dirt is separated under the synergistic effect of the vibration and the scraper 6, and is then carried away from the surface of the filter membrane 3 by the water flow. At the same time, gas is extracted into the water through the water inlet pipe 11, so that the formed gas-liquid mixture is intermittently flushed into the clean water space to perform secondary flushing on the filter membrane 3, thereby accelerating the flow rate of the water flow in the clean water space, ensuring that the dirt accumulated on the surface and pores of the filter membrane 3 is further separated, thereby ensuring the continuous and efficient sewage treatment capacity of the filter membrane 3 and improving the service life of the filter membrane 3.

[0053] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A hydraulic flushing coordinated MBR vibrating membrane frame, comprising an outer frame (1) and a plurality of inner frames (2) distributed therein at equal intervals, each of the inner frames (2) being symmetrically provided with two filter membranes (3), and a clean water space (4) being formed between the two filter membranes (3) and the inner frame (2); It is characterized in that Each of the inner frames (2) is movable in the outer frame (1) along a vertical direction. A driving assembly (5) for synchronously driving all the inner frames (2) to vibrate up and down is provided at the bottom of the outer frame (1). An inlet pipe (11) having an air extraction function and a water outlet pipe (12) having a water extraction function and fixed to the outer frame (1) are provided above and below each of the inner frames (2). The inlet pipe (11) and the water outlet pipe (12) are provided with a plurality of inlet conduits (111) and outlet conduits (121) that vertically penetrate the inner frame (2) and extend toward the inside thereof. A guide opening is provided on the inner frame (2) for the inlet conduits (111) and the outlet conduits (121) to pass through. When the filter membrane (3) is filtering sewage, the driving component (5) drives all the inner frames (2) to vibrate, so that the filter membrane (3) cooperates with the surrounding flowing water to separate dirt during the vibration process, and at the same time, the gas is extracted through the water inlet pipe (11) and introduced into the water to form a gas-liquid mixture that is flushed into the clean water space to perform a secondary flushing of the filter membrane (3); wherein: An auxiliary scraping assembly is provided on the outer surface of each filter membrane (3), and an intermediate channel for dirt to fall or float is reserved between every two adjacent auxiliary scraping assemblies. The auxiliary scraping assembly comprises a plurality of scrapers (6) which are evenly spaced and distributed along the vibration direction of the filter membrane (3). All scrapers (6) are fixedly connected to the outer frame (1), and the two ends of the scrapers (6) extend to the left and right sides of the filter membrane (3) respectively. When the inner frame (2) vibrates, the filter membrane (3) moves relative to the scrapers (6), so that the dirt on the outer surface of the filter membrane (3) is scraped off by the scrapers (6) in coordination with the water flow; The scraper (6) comprises an outer scraper portion (61) which is in contact with the outer surface of the filter membrane (3), and a guide portion (62) which is integrally connected to the outer scraper portion (61) and extends upward, the upper surface of the outer scraper portion (61) is a lower sliding surface (611) which is inclined toward the outer side of the filter membrane (3), and the lower surface of the outer scraper portion (61) is an upper sliding surface (612) which is inclined toward the outer side of the filter membrane (3), a lower sliding channel for sediment to fall is provided between the lower sliding surface (611) of each outer scraper portion (61) and the guide portion (62), and a drainage channel (622) for suspended matter to float is formed between the guide portion (62) and the upper sliding surface (612) of the outer scraper portion (61) of adjacent scrapers (6); A recoil nozzle (13) is fixedly provided between a water inlet conduit (111) on the water inlet pipe (11) and a corresponding water outlet conduit (121) on the water outlet pipe (12); the recoil nozzle (13) is provided with a plurality of nozzles (131) facing the inner surface of each filter membrane (3); the upper end of the recoil nozzle (13) is an open end connected to the water inlet conduit (111); the lower end of the recoil nozzle (13) is a closed end connected to the water outlet conduit (121); the water inlet pipe (11) is specifically a gas-liquid mixing venturi tube capable of extracting gas through the kinetic energy of the hydraulic force itself; and the water outlet conduit (121) is provided with a through hole (1211) in a region located in the clean water space (4).

2. A hydraulic flushing coordinated MBR vibrating membrane frame according to claim 1, characterized in that: The bottom matrix of the outer frame (1) is provided with an aeration tube group (63) for upward aeration so that the suspended matter follows the bubbles and moves away from the filter membrane (3) along the guide parts (62) of the adjacent scrapers (6) and the upper sliding surface (612) of the outer scraper part (61).

3. The hydraulic flushing coordinated MBR vibrating membrane frame according to claim 1 is characterized in that: An upper plate (21) located in the clean water space (4) is fixedly connected between all the water inlet conduits (111) on the water inlet pipe member (11), a lower plate (22) located in the clean water space (4) is fixedly connected between all the water outlet conduits (121) on the water outlet pipe member (12), and a plurality of springs (23) are fixedly connected between the inner frame (2) and the upper plate (21) and the lower plate (22).

4. The hydraulic flushing coordinated MBR vibrating membrane frame according to claim 3 is characterized in that: All guide openings opened on the inner frame (2) are fixedly provided with rubber sleeves (24) sleeved on the corresponding water inlet conduits (111) and water outlet conduits (121).

5. The hydraulic flushing coordinated MBR vibrating membrane frame according to claim 3 is characterized in that: Both ends of the upper plate (21) and the lower plate (22) are rotatably connected to support wheels (211) that are in contact with the inner edge of the inner frame (2).

6. The hydraulic flushing coordinated MBR vibrating membrane frame according to claim 1, characterized in that: The driving assembly (5) comprises a wave maker and lifting plates (51) symmetrically arranged on both sides of the outer frame (1), and a float (52) located on the water surface. Both sides of each inner frame (2) extend outwardly to form an extension rod (511) fixedly connected to the corresponding lifting plate (51). The lifting plate (51) is fixedly connected to the float (52). A linear guide rail (53) for sliding connection of the float (52) is fixedly provided on the outer frame (1) in a vertical direction.

7. The hydraulic flushing coordinated MBR vibrating membrane frame according to claim 1, characterized in that: The outer frame (1) is a grid plate type frame structure.

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