Raw water membrane treatment device

Abstract

The utility model discloses a raw water membrane treatment device, which relates to the technical field of water treatment equipment and is technically characterized by comprising a base and a barrel fixedly mounted in the center of the top of the base, a collecting box matched with the barrel is slidably connected to the bottom of an inner cavity of the barrel, and a decontamination mechanism is arranged on the barrel. According to the utility model, by utilizing the synergistic effect of water flow and air flow, the stripping and removing capability on pollutants on the surface of the membrane is enhanced, and the problem of accumulation of organic matters, microorganisms and inorganic colloids caused by a concentration polarization effect is effectively solved; the membrane component always keeps the maximum effective filtering area; meanwhile, the double-sided cleaning design of the filtering membrane is matched with a rapid fixing device, so that secondary pollution caused by a cleaning blind area is avoided, the maintenance efficiency is greatly improved, and the problem of performance degradation caused by accumulation of a pollution layer of traditional membrane treatment equipment is fundamentally solved.

Description

Technical Field

[0001] This utility model relates to the field of water treatment equipment technology, specifically to a raw water membrane treatment device. Background Technology

[0002] The raw water membrane treatment unit is a water treatment device developed based on membrane separation technologies such as ultrafiltration, nanofiltration, or reverse osmosis. It is mainly used for the deep purification of untreated or only partially treated water sources (such as surface water, groundwater, and industrial wastewater). Its core utilizes a polyvinylidene fluoride (PVDF) composite membrane layer with a gradient pore size distribution to achieve both physical sieving and surface charge adsorption. This efficiently removes suspended particles, colloidal substances, pathogenic microorganisms, and dissolved organic matter in the 0.001-10μm range (COD removal rate ≥85%). Simultaneously, it controls the dissolved salt content through ion-selective permeability (desalination rate ≥95%). The effluent quality meets the requirements for industrial high-purity water preparation, municipal drinking water supply, and special wastewater reuse. The unit adopts a modular design, optimizing the flow channel structure and operating parameters (transmembrane pressure difference 0.1-0.5MPa, cross-flow velocity 2-5m / s) to control energy consumption at 0.8-1.5kWh / m³ while ensuring treatment efficiency. 3 Within the range, it saves more than 30% energy compared to traditional processes.

[0003] However, during long-term operation, raw water membrane treatment devices are prone to forming a dense fouling layer on the membrane surface due to concentration polarization effect and interfacial interaction. This results in a reduction of effective filtration area and a doubling of mass transfer resistance, leading to a decrease in permeate flux and affecting permeate efficiency and water quality stability. Therefore, we propose a novel raw water membrane treatment device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a raw water membrane treatment device that solves the problem of decreased filtration efficiency caused by the accumulation of pollutants on the membrane surface during long-term operation of the raw water membrane treatment device.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a raw water film treatment device, comprising a base and a cylinder fixedly installed at the center of the top of the base, wherein a collection box adapted to the cylinder is slidably connected to the bottom of the inner cavity of the cylinder, and a dirt removal mechanism is provided on the cylinder.

[0006] The cleaning mechanism includes a top cover rotatably connected to the top of the cylinder. The top cover is adapted to the cylinder. An air box adapted to the top cover is fixedly installed in the inner cavity of the top cover. Several air holes are opened at the bottom of the air box. An air filling pipe penetrating the top cover is fixedly installed at the top of the air box.

[0007] The bottom of the air box is fixedly equipped with an outer hexagonal tube and an inner hexagonal tube. The inner hexagonal tube is located inside the outer hexagonal tube. A connecting pipe is fixedly installed at the apex of the outer hexagonal tube and the inner hexagonal tube. The connecting pipe communicates with the inner cavity of the outer hexagonal tube and the inner hexagonal tube. There are six connecting pipes. One end of the six connecting pipes is interconnected with each other. A water injection pipe communicating with the inner cavity of the connecting pipe is fixedly installed at the intersection of the six connecting pipes. The water injection pipe passes through the top cover. Several nozzles are fixedly installed on the outer hexagonal tube, the inner hexagonal tube and the connecting pipe.

[0008] Preferably, the inner cavity of the cylinder is provided with a filtration mechanism, the filtration mechanism including a filter membrane disposed in the inner cavity of the cylinder and adapted to the cylinder, a shaft rod symmetrically installed on the outer circumference of the filter membrane and penetrating the cylinder, a telescopic spring fixedly installed in the inner cavity of the shaft rod, a telescopic rod slidably connected to the shaft rod fixedly installed at one end of the telescopic spring, and a locking block fixedly installed at the end of the telescopic rod away from the telescopic spring.

[0009] Preferably, the shaft is rotatably connected to the cylinder, wherein the connection between the shaft and the cylinder has good sealing performance.

[0010] Preferably, the collection box is located directly below the filter membrane, and a handle with anti-slip protrusions is fixedly installed on the outer circular surface of the collection box.

[0011] Preferably, arc-shaped blocks are symmetrically installed on the outer circular surface of the cylinder, the arc-shaped blocks are adapted to the cylinder, and a V-shaped clamping plate is fixedly installed on the arc-shaped blocks; the V-shaped clamping plate has a clamping groove adapted to the arc-shaped blocks.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This invention utilizes a ring-shaped pipe network consisting of an outer hexagonal tube, an inner hexagonal tube, and a connecting pipe, working in conjunction with a nozzle and pulsed airflow from the air holes at the bottom of the air chamber to create a two-phase air-water flushing mechanism. This effectively removes the dense fouling layer from the surface of the filter membrane, solving the membrane flux attenuation problem caused by concentration polarization in traditional devices. Simultaneously, a filter membrane flipping structure driven by a shaft and telescopic spring enables alternating cleaning and use on both sides, reducing cleaning blind spots. Combined with a sliding collection box and a V-shaped locking mechanism, cleaning and maintenance time is shortened, fundamentally solving the performance degradation problem caused by fouling layer accumulation in traditional membrane treatment equipment. Attached Figure Description

[0014] Figure 1 This is a complete structural schematic diagram of the present invention;

[0015] Figure 2 This utility model Figure 1 Another perspective structural diagram;

[0016] Figure 3 This utility model Figure 2 Another perspective structural diagram;

[0017] Figure 4 This is a schematic diagram of the filter mechanism of this utility model;

[0018] Figure 5 This utility model Figure 4 A magnified structural diagram of point A above.

[0019] In the picture:

[0020] 1. Base; 2. Cylinder; 3. Collection box; 4. Stain removal mechanism; 401. Top cover; 402. Air box; 403. Air vent; 404. Air inlet pipe; 405. Outer hexagonal tube; 406. Inner hexagonal tube; 407. Connecting pipe; 408. Water inlet pipe; 409. Nozzle; 5. Filtration mechanism; 501. Filter membrane; 502. Shaft; 503. Telescopic spring; 504. Telescopic rod; 505. Locking block; 6. Arc-shaped block; 7. V-shaped locking plate. Detailed Implementation

[0021] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0022] This utility model provides a technical solution:

[0023] Please see Figures 1-5 A raw water membrane treatment device includes a base 1 and a cylinder 2 fixedly installed at the top center of the base 1. A collection box 3 adapted to the cylinder 2 is slidably connected to the bottom of the inner cavity of the cylinder 2, and a dirt removal mechanism 4 is provided on the cylinder 2.

[0024] The cleaning mechanism 4 includes a top cover 401 rotatably connected to the top of the cylinder 2. The top cover 401 is adapted to the cylinder 2. An air box 402 adapted to the top cover 401 is fixedly installed in the inner cavity of the top cover 401. Several air holes 403 are opened at the bottom of the air box 402. An air filling pipe 404 penetrating the top cover 401 is fixedly installed at the top of the air box 402.

[0025] The rotating closed top cover 401 and the cylinder 2 form a sealed space. At this time, the air filling pipe 404 is connected to an external air pump to deliver high-pressure gas to the medium air box 402. The gas is ejected in a pulse form through the bottom array of air holes 403, forming a dense airflow that impacts the surface of the filter membrane 501, effectively peeling off the adhered organic matter and colloidal contaminant layer.

[0026] An outer hexagonal tube 405 and an inner hexagonal tube 406 are fixedly installed at the bottom of the air box 402. The inner hexagonal tube 406 is located inside the outer hexagonal tube 405. A connecting pipe 407 is fixedly installed at the apex of the outer hexagonal tube 405 and the inner hexagonal tube 406. The connecting pipe 407 communicates with the inner cavity of the outer hexagonal tube 405 and the inner hexagonal tube 406. There are six connecting pipes 407. One end of the six connecting pipes 407 is interconnected with each other. A water injection pipe 408 communicating with the inner cavity of the connecting pipe 407 is fixedly installed at the intersection of the six connecting pipes 407. The water injection pipe 408 passes through the top cover 401. Several nozzles 409 are fixedly installed on the outer hexagonal tube 405, the inner hexagonal tube 406 and the connecting pipes 407.

[0027] After the water injection pipe 408 is connected to an external water source, the water flow is evenly distributed to the outer hexagonal pipe 405 and the inner hexagonal pipe 406 through six interconnecting connecting pipes 407. The symmetry of the hexagonal structure is used to achieve pressure balance and avoid uneven local flushing. The densely distributed nozzles 409 on the pipe wall cover the surface of the filter membrane 501 with a fan-shaped water curtain, forming a three-dimensional flushing network that directly destroys the structure of the fouling layer. The outer hexagonal pipe 405 and the inner hexagonal pipe 406 form a ring network through the connecting pipes 407, ensuring that the water flow impacts the membrane surface from different angles and eliminates cleaning blind spots.

[0028] Please see Figures 1-5 The inner cavity of the cylinder 2 is provided with a filter mechanism 5. The filter mechanism 5 includes a filter membrane 501 disposed in the inner cavity of the cylinder 2 and adapted to the cylinder 2. A shaft 502 passing through the cylinder 2 is symmetrically installed on the outer circumference of the filter membrane 501. A telescopic spring 503 is fixedly installed in the inner cavity of the shaft 502. A telescopic rod 504 that is slidably connected to the shaft 502 is fixedly installed at one end of the telescopic spring 503. A locking block 505 is fixedly installed at the end of the telescopic rod 504 away from the telescopic spring 503.

[0029] During cleaning, pressing the telescopic rod 504 inward compresses the telescopic spring 503, causing the locking block 505 to disengage from the V-shaped locking plate 7 and unlock the filter membrane 501. After rotating 180 degrees, the telescopic rod 504 is released, and the telescopic spring 503 returns to its original position, pushing the locking block 505 back into the V-shaped locking plate 7 for fixation. This design allows for alternating use of both sides of the filter membrane 501. Combined with the air-water two-phase flushing system, this not only eliminates cleaning blind spots but also significantly improves equipment maintenance efficiency and operational stability.

[0030] In some embodiments, the shaft 502 is rotatably connected to the cylinder 2, wherein the connection between the shaft 502 and the cylinder 2 has good sealing performance.

[0031] In this embodiment, the rotatable connection between the shaft 502 and the cylinder 2 facilitates the flipping of the filter membrane 501; the connection between the shaft 502 and the cylinder 2 has good sealing performance, which can reduce the leakage of water or air.

[0032] In some embodiments, the collection box 3 is located directly below the filter membrane 501, wherein a handle with anti-slip protrusions is fixedly mounted on the outer circular surface of the collection box 3.

[0033] In this embodiment, placing the collection box 3 directly below the filter membrane 501 facilitates the collection of wastewater during the cleaning process. The handle with anti-slip protrusions provides a support and makes it easy to pull out the collection box 3 during daily use.

[0034] Please see Figures 1-5 Arc-shaped blocks 6 are symmetrically installed on the outer circular surface of the cylinder 2. The arc-shaped blocks 6 are adapted to the cylinder 2. A V-shaped clamping plate 7 is fixedly installed on the arc-shaped blocks 6. The V-shaped clamping plate 7 has a groove adapted to the arc-shaped blocks 6.

[0035] Pressing the telescopic rod 504 inward compresses the telescopic spring 503, causing the locking block 505 to disengage from the slot on the V-shaped locking plate 7, thus releasing the locked state. At this time, the filter membrane 501 can rotate freely 180 degrees for double-sided switching. After releasing the telescopic rod 504, the telescopic spring 503 returns to its original position, pushing the locking block 505 back into the slot on the V-shaped locking plate 7, completing the locking process.

[0036] In practical use, the working principle of this utility model is as follows:

[0037] After prolonged operation, a contamination layer formed by organic matter, microorganisms, and inorganic colloids adheres to the surface of the filter membrane 501, necessitating the initiation of a cleaning procedure. First, close the top cover 401, connect the water injection pipe 408 to the external water supply component, and connect the air inflation pipe 404 to the external air pump. The cleaning process consists of two stages:

[0038] The first stage is hydraulic rinsing. An external water supply unit injects water into the injection pipe 408. The water flows through six interconnected connecting pipes 407, and is evenly distributed to the outer hexagonal pipe 405 and the inner hexagonal pipe 406. Through nozzles 409 evenly distributed on the pipe walls, the cleaning water covers the membrane surface in a fan shape, directly rinsing away attached impurities. This three-dimensional water flow path ensures thorough cleaning of the membrane surface without dead angles, effectively disrupting the fouling layer structure.

[0039] The second stage is bubble flushing. An external air pump is simultaneously activated, and gas enters the air chamber 402 through the inflation pipe 404, then is ejected as an airflow through the densely packed air holes 403 at the bottom. The airflow impacts the filter membrane 501, further stripping loose contaminants from the membrane surface, and works synergistically with the water flow to enhance the removal of the contaminant layer. This gas-liquid two-phase cleaning mechanism significantly alleviates interfacial fouling caused by concentration polarization.

[0040] After cleaning, double-sided cleaning is achieved through a unique filter membrane 501 flipping assembly. The operator presses the telescopic rods 504 on both sides of the filter membrane 501 inwards, compressing the telescopic springs 503, causing the locking block 505 to disengage from the V-shaped locking plate 7. At this point, the filter membrane 501 can rotate freely 180 degrees, with the uncleaned side facing upwards. Releasing the telescopic rods 504 then retracts the telescopic springs 503, pushing the locking block 505 back into the V-shaped locking plate 7, completing the fixation. This design allows both sides of the filter membrane to be used cyclically as both working and cleaning surfaces, transforming the cleaning blind spots of traditional devices into effective filtration areas and significantly improving maintenance efficiency.

[0041] Wastewater and impurities generated during cleaning fall directly into the collection box 3 at the bottom of the cylinder 2 under gravity. Quick cleaning is achieved by sliding the collection box 3, preventing secondary deposition of pollutants. The entire cleaning process does not require disassembly of major components, achieving an organic combination of online cleaning and rapid maintenance. This effectively solves the technical bottlenecks of traditional devices, such as long downtime, high maintenance costs, and rapid membrane performance degradation caused by cleaning.

[0042] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A raw water membrane treatment device, characterized in that, Includes a base (1) and a cylinder (2) fixedly installed at the top center of the base (1). The bottom of the inner cavity of the cylinder (2) is slidably connected to a collection box (3) adapted to the cylinder (2). A dirt removal mechanism (4) is provided on the cylinder (2). The cleaning mechanism (4) includes a top cover (401) rotatably connected to the top of the cylinder (2). The top cover (401) is adapted to the cylinder (2). An air box (402) adapted to the top cover (401) is fixedly installed in the inner cavity of the top cover (401). Several air holes (403) are opened at the bottom of the air box (402). An air filling pipe (404) penetrating the top cover (401) is fixedly installed at the top of the air box (402). An outer hexagonal tube (405) and an inner hexagonal tube (406) are fixedly installed at the bottom of the air box (402). The inner hexagonal tube (406) is located inside the outer hexagonal tube (405). A connecting pipe (407) is fixedly installed at the apex of the outer hexagonal tube (405) and the inner hexagonal tube (406). The connecting pipe (407) communicates with the inner cavity of the outer hexagonal tube (405) and the inner hexagonal tube (406). There are six connecting pipes (407). One end of each of the six connecting pipes (407) is interconnected. A water injection pipe (408) communicating with the inner cavity of the connecting pipe (407) is fixedly installed at the intersection of the six connecting pipes (407). The water injection pipe (408) passes through the top cover (401). Several nozzles (409) are fixedly installed on the outer hexagonal pipe (405), the inner hexagonal pipe (406) and the connecting pipes (407).

2. The raw water membrane treatment device according to claim 1, characterized in that: The inner cavity of the cylinder (2) is provided with a filter mechanism (5). The filter mechanism (5) includes a filter membrane (501) disposed in the inner cavity of the cylinder (2) and adapted to the cylinder (2). A shaft (502) penetrating the cylinder (2) is symmetrically installed on the outer circumference of the filter membrane (501). A telescopic spring (503) is fixedly installed in the inner cavity of the shaft (502). A telescopic rod (504) that is slidably connected to the shaft (502) is fixedly installed at one end of the telescopic spring (503). A locking block (505) is fixedly installed at the end of the telescopic rod (504) away from the telescopic spring (503).

3. The raw water membrane treatment device according to claim 2, characterized in that: The shaft (502) is rotatably connected to the cylinder (2), wherein the connection between the shaft (502) and the cylinder (2) has good sealing performance.

4. The raw water membrane treatment device according to claim 1, characterized in that: The collection box (3) is located directly below the filter membrane (501), and a handle with anti-slip protrusions is fixedly installed on the outer circular surface of the collection box (3).

5. The raw water membrane treatment device according to claim 1, characterized in that: Arc-shaped blocks (6) are symmetrically installed on the outer circular surface of the cylinder (2). The arc-shaped blocks (6) are adapted to the cylinder (2). A V-shaped card plate (7) is fixedly installed on the arc-shaped blocks (6). A card slot adapted to the arc-shaped blocks (6) is opened on the V-shaped card plate (7).

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