A liftable MBR membrane support device

Abstract

This utility model discloses a liftable MBR membrane support device, belonging to the field of wastewater treatment technology. The device includes a main structure, an MBR membrane module, and a lifting device. The lifting device includes a fixed slide rod, a chute, a lifting device body, and a drive mechanism. The fixed slide rod is vertically installed inside the main structure and fixed at its bottom by pre-embedded iron blocks. The lifting device body slides into the fixed slide rod via the chute, and the MBR membrane module is installed in the middle of the lifting device body. A slide rod fixing device is provided on the main structure to limit the slide rod's position. Steel wire fixing components are provided on both sides of the lifting device body, connected to the structure via fixed steel pipes to achieve stable guiding and lifting of the membrane module. This device automatically completes the lifting and lowering operation of the membrane module through PLC control, eliminating the need for hoisting equipment, improving the convenience of membrane module cleaning, reducing the operating cost of wastewater treatment plants, and has the advantages of compact structure, simple operation, and strong adaptability.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, and more specifically to a liftable MBR membrane support device. Background Technology

[0002] Membrane bioreactors (MBRs) are wastewater treatment technologies that combine membrane separation technology with activated sludge processes. In recent years, they have been widely used in municipal wastewater and industrial wastewater treatment. MBR membrane modules typically use hollow fiber membranes or flat sheet membranes, which achieve solid-liquid separation through physical sieving, resulting in high-quality effluent. The systems have a small footprint and are easy to integrate, offering significant technological advantages.

[0003] However, during long-term operation, MBR membranes inevitably become clogged by pollutants such as suspended particles, organic matter, and bioflocs in wastewater, leading to decreased membrane flux, increased operating resistance, and severely impacting treatment efficiency and system stability. Therefore, regular cleaning of the membrane modules is an essential maintenance procedure. Common cleaning methods mainly include two types: in-situ cleaning and relocation cleaning.

[0004] In-situ cleaning refers to cleaning the membrane surface without moving the membrane module by adding chemical cleaning solutions online or by air-water backwashing. It is simple to operate, can be performed frequently, and is suitable for routine maintenance. However, in-situ cleaning cannot completely remove deep-seated contaminants from the membrane fibers, and the cleaning effect is limited. As the operating time increases, membrane fouling will gradually accumulate, eventually affecting the effluent performance.

[0005] Relocation cleaning refers to lifting the membrane module entirely out of the treatment tank and placing it in a specialized cleaning tank for immersion in acid and alkali solutions. This method can restore the membrane's initial performance and is an important means of periodic deep maintenance. However, traditional relocation cleaning methods have the following problems:

[0006] 1. Lifting equipment required: Electric hoists, rail cranes, and other equipment are usually required to lift the membrane modules out, increasing investment and maintenance costs;

[0007] 2. High operating space requirements: A hoisting channel and membrane module transfer space must be reserved above or to the side of the treatment tank, which is not conducive to the compact design of the system;

[0008] 3. High operational risks: There are safety risks during the hoisting process, especially when working in confined spaces, which can easily cause equipment damage or personal injury.

[0009] 4. High labor intensity and low efficiency: Relocation and cleaning largely rely on manual operation, which is cumbersome, requires high personnel cooperation, and results in low efficiency;

[0010] 5. High operation and maintenance costs: Regular relocation and cleaning require hiring external operation and maintenance units or long-term allocation of professional personnel, which significantly increases system operation costs.

[0011] To address the aforementioned issues, some technical solutions have attempted to use lifting mechanisms to partially or entirely raise the membrane module outside the pool for easier cleaning. However, these structures often suffer from complexity, high cost, or poor compatibility with membrane modules, lacking standardized and modular application capabilities, and have not yet formed a mature and universally applicable device structure.

[0012] Therefore, providing a device that is simple in structure, stable in operation, and can lift and clean membrane modules without the need for cranes or manual handling has become a key technology in the field of MBR membrane operation and maintenance. Utility Model Content

[0013] To address the problems existing in the prior art, this utility model provides a liftable MBR membrane support device that enables automatic lifting and cleaning of membrane modules, reducing operating costs and improving cleaning efficiency.

[0014] To achieve the above objectives, this utility model provides a liftable MBR membrane support device, including a main structure, an MBR membrane module, and a lifting device for driving the MBR membrane module to rise and fall.

[0015] The lifting device includes a fixed slide bar, a lifting device body that slides with the fixed slide bar, a slide groove, and a driving mechanism;

[0016] The fixed sliding rod is vertically installed inside the main body of the structure, and its bottom end is fixed to the foundation of the structure by a pre-embedded iron block;

[0017] The lifting device body is guided and engaged with a fixed slide rod via a sliding groove, and the MBR membrane module is installed in the middle of the lifting device body;

[0018] The main body of the structure is equipped with a sliding rod fixing device to restrict the movement of the fixed sliding rod;

[0019] The main body of the lifting device is connected to the fixed steel pipe through a steel wire fastener, which is used for guidance and stability during the lifting process.

[0020] Preferably, the drive mechanism is controlled by a PLC control system for automatically performing lifting operations.

[0021] Preferably, there are two or more fixed sliding rods, which are symmetrically arranged inside the main body of the structure.

[0022] Preferably, the steel wire fasteners are located on both sides of the main body of the lifting device and are connected to the main body of the structure through fixed steel pipes to form a flexible limiting structure.

[0023] Preferably, the MBR membrane module and the lifting device body are detachably connected.

[0024] As can be seen from the above technical solution, compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] (1) The lifting device is integrated with the MBR membrane module, so that lifting and cleaning can be completed without external hoisting equipment;

[0026] (2) The lifting process is automatically controlled by PLC, which is easy to operate and reduces the intensity of manual operation;

[0027] (3) The device has a compact structure and occupies little space, making it suitable for small and medium-sized sewage treatment plants;

[0028] (4) The lifting path is smooth, and the fixed slide bar and steel wire limiting structure provide good guidance and anti-shaking ability, which is safe and reliable. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0031] Figure 2 This is a top view of the structure of this utility model.

[0032] 1-Main structure; 2-Embedded iron block; 3-Main body of lifting device; 4-Fixed slide bar; 5-Slide bar fixing device; 6-MBR membrane module; 7-Slide groove; 8-Steel wire fastener; 9-Fixed steel pipe. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Example

[0035] like Figure 1 and Figure 2As shown, the present invention provides a liftable MBR membrane support device, which mainly includes: a main structure 1, a pre-embedded iron block 2, a lifting device main body 3, a fixed slide bar 4, a slide bar fixing device 5, an MBR membrane module 6, a slide groove 7, a steel wire fixing component 8, and a fixed steel pipe 9.

[0036] This device is mainly used for cleaning and maintenance of MBR membrane modules 6 during the operation of wastewater treatment systems. By lifting the main body 3 of the device, the membrane modules are lifted vertically, allowing them to be removed from the liquid surface for external cleaning. This simplifies the traditional membrane relocation and hoisting process, reduces operation and maintenance costs, and improves cleaning efficiency.

[0037] The main structure 1 serves as the overall frame support structure for this device. It can be made of 304 stainless steel or epoxy-coated carbon steel plates, providing excellent corrosion resistance. The main structure 1 is a quadrilateral vertical frame structure installed inside the MBR membrane tank, with its bottom connected to the tank structure by welding or bolts.

[0038] An embedded iron block 2 is installed at the bottom of the main structure 1 to provide a stable anchor point for connection with the fixed sliding rod 4. The embedded iron block 2 is made of steel and is cast into the pool foundation or fixed by expansion bolts to ensure the reliability of the vertical support structure of the sliding rod.

[0039] The fixed slide rod 4 is the guide rail in the lifting structure of this device. There are usually two or four of them, located on both sides of the main body 1 of the structure, symmetrically distributed. The fixed slide rod 4 is a high-strength solid steel rod or a chrome-plated guide rail, which has excellent straightness and wear resistance.

[0040] The slide 7 is located on both sides of the lifting device body 3 and fits tightly with the fixed slide rod 4. The slide 7 has a U-shaped or semi-enclosed structure and is equipped with nylon sliders or linear bearings. Under its guidance, the lifting device body 3 can move vertically in a straight line, effectively preventing the membrane module 6 from swaying left and right during the lifting process.

[0041] During the sliding process, the frictional resistance between the slide groove 7 and the fixed slide rod 4 is small, the operation is smooth, energy consumption is reduced, and control accuracy is improved.

[0042] The lifting device body 3 is the motion execution unit of the entire bracket device. Its structure is a rectangular steel frame, with the crossbeams and columns welded together to form a sturdy frame. This body is connected to the fixed slide rod 4 via the slide groove 7, supporting vertical lifting and lowering movements.

[0043] The MBR membrane module 6 is fixed to the middle of the lifting device body 3 via mounting brackets or bolts. The membrane module is a standard curtain-type hollow fiber membrane module with excellent filtration performance. For easy disassembly and maintenance, the MBR membrane module 6 and the lifting device body 3 are connected by a detachable structure, and quick-connect fittings allow for rapid membrane pack replacement during on-site operation.

[0044] When the flux of the membrane module decreases after running for a period of time, the system can start the lifting procedure after detection, raising the main body 3 of the lifting device together with the MBR membrane module 6 to the top of the liquid surface for manual or automatic cleaning, and then lowering it back to the original position to resume operation.

[0045] The wire fixing component 8 is a wire rope winding assembly, connected to both sides of the lifting device body 3, with the other end fixed to the fixing steel pipe 9 inside the structure body 1. The fixing steel pipe 9 is installed horizontally and welded to the inner wall of the structure body 1, and is used for traction and positioning of the lifting device.

[0046] The steel wire fastener 8 and the fixed steel pipe 9 form a flexible guide and limit system, which provides auxiliary support during the rise or fall of the membrane module 6, restricts its displacement in the horizontal direction, and prevents swaying due to water disturbance or uneven membrane weight.

[0047] In addition, the steel wire fastener 8 also has a safety redundancy function, which can prevent the main body 3 of the lifting device from falling freely in the event of lifting failure or instability, thus protecting the membrane assembly and equipment safety.

[0048] The slide bar fixing device 5 is installed on the upper end of the main structure 1, and its structure can be a manual buckle, a rotating clamping device, or an electromagnetic lock. Its main function is to lock the fixed slide bar 4 when the equipment is stationary or under maintenance, so as to prevent the slide bar from loosening due to external force or misoperation, thereby causing the membrane module 6 to shift or shake.

[0049] Before the cleaning operation begins, the slide bar fixing device 5 needs to be unlocked to release the slide bar so that the main body 3 of the lifting device can be raised and lowered freely; after the cleaning is completed, the slide bar fixing device 5 is locked again to ensure the stability of the system.

[0050] This device is equipped with a PLC control system, which, in conjunction with an electric lifting drive, enables automatic lifting control of the main body 3 of the lifting device. The system mainly includes:

[0051] Control panel: Located on the outside of the equipment or inside the central control cabinet, operators can select commands such as "lift", "lower", and "emergency stop" via touch buttons or HMI interface;

[0052] Height sensor: Installed above the main structure 1 or on the top of the sliding rod to monitor the position of the lifting device in real time;

[0053] Drive unit: An electric winch or screw lifting mechanism is selected to drive the lifting device according to control commands;

[0054] Limit switches: installed at the top and bottom of the structure respectively to prevent the device from operating beyond its designated position;

[0055] Safety interlock: Linked with MBR tank liquid level, aeration system, and power supply system to ensure safe and reliable operation.

[0056] The workflow is as follows:

[0057] 1. The operator initiates the "lift" command, and the control system unlocks the slide bar fixing device 5;

[0058] 2. The electric drive device drives the lifting device body 3 to rise along the fixed slide bar 4, and the membrane module 6 is then removed from the liquid surface;

[0059] 3. During the lifting process, the wire fixing component 8 and the fixed steel pipe 9 maintain a traction state, which assists in limiting the movement;

[0060] 4. It will automatically stop after being raised to the preset height and issue a prompt signal, allowing manual or spray cleaning;

[0061] 5. After cleaning is complete, execute the "lower" command to reset the device to its operating height;

[0062] 6. The control system commands the slide bar fixing device 5 to relock and restore the operating state.

[0063] In summary, this utility model can be widely applied to municipal sewage treatment plants, industrial park sewage treatment, distributed integrated sewage treatment equipment and other scenarios, and has significant practicality and economic benefits.

[0064] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A liftable MBR membrane support device, comprising a main structure (1), an MBR membrane module (6), and a lifting device for driving the MBR membrane module to rise and fall, characterized in that: The lifting device includes a fixed slide bar (4), a lifting device body (3) that slides with the fixed slide bar (4), a slide groove (7), and a driving mechanism; The fixed sliding rod (4) is vertically installed inside the main body (1) of the structure, and its bottom end is fixed to the foundation of the structure by a pre-embedded iron block (2); The lifting device body (3) is guided and cooperated with the fixed slide rod (4) through the slide groove (7), and the MBR membrane module (6) is installed in the middle of the lifting device body (3); The main body of the structure (1) is provided with a sliding rod fixing device (5) to restrict the movement of the fixed sliding rod (4); The main body (3) of the lifting device is connected to the fixed steel pipe (9) through the steel wire fastener (8) for guidance and stability during the lifting process.

2. The liftable MBR membrane carrier apparatus of claim 1, wherein: The drive mechanism is controlled by a PLC control system and is used to automatically perform lifting operations.

3. The liftable MBR membrane carrier apparatus of claim 1, wherein: The fixed sliding rods (4) are two or more, and are symmetrically arranged inside the main body (1) of the structure.

4. The liftable MBR membrane support device according to claim 1, characterized in that: The steel wire fasteners (8) are installed on both sides of the main body (3) of the lifting device and are connected to the main body (1) of the structure through the fixed steel pipes (9) to form a flexible limiting structure.

5. The liftable MBR membrane carrier apparatus of claim 1, wherein: The MBR membrane module (6) and the lifting device body (3) are detachably connected.

Images