Fixed spray pipe brush vibration off-line cleaning equipment for MBR (Membrane Bioreactor) membrane curtain

Abstract

The utility model discloses fixed spray pipe brush vibration off-line cleaning equipment for an MBR (Membrane Bioreactor) membrane curtain. The fixed spray pipe brush vibration off-line cleaning equipment comprises a main body frame, a membrane curtain transmission mechanism, a cleaning mechanism, a plurality of brush vibration units, a water collecting tank mechanism and a control unit, the MBR membrane curtain is arranged on the membrane curtain conveying belt, the membrane curtain can move at a constant speed and can be automatically cleaned after equipment is started, manual operation is replaced, and the labor intensity of workers is greatly reduced; two sides of a fixed spray pipe are simultaneously washed by water, a brush vibration unit is additionally arranged, the vibration amplitude is increased by beating membrane filaments through a brush, sludge impurities on the surfaces of the membrane filaments are effectively removed, and the cleaning uniformity and thoroughness are improved.

Description

Technical Field

[0001] This utility model specifically relates to an offline cleaning device for fixed nozzle brush vibration of MBR membrane curtain. Background Technology

[0002] Existing offline cleaning methods for MBR (Membrane Bioreactor) membrane curtains mainly rely on manual operation, typically combining physical and chemical cleaning methods. Physical cleaning methods include water flushing, aeration cleaning, and ultrasonic cleaning, while chemical cleaning often employs alkaline washing with sodium hypochlorite and acid washing with hydrochloric acid. In actual operation at wastewater treatment plants, the typical offline cleaning process for MBR membrane curtains is usually: manual water flushing—acid washing—alkaline washing. Although this process can restore the filtration performance of the membrane curtains to some extent, its technical solution has revealed the following significant problems and defects in application:

[0003] (1) High labor intensity and harsh working environment: Manual water rinsing, as the initial step in the cleaning process, requires workers to use high-pressure water guns or similar tools to clean the membrane curtains one by one, resulting in high labor intensity. At the same time, cleaning operations are usually carried out in humid, enclosed environments. Especially in winter, under low temperatures, workers need to work for extended periods in damp and cold conditions, making the working conditions extremely harsh. This environment not only reduces work comfort but may also pose a potential threat to workers' health, such as causing arthritis or respiratory diseases.

[0004] (2) High water consumption and uneven cleaning effect: Manual flushing relies on recycled water as the cleaning medium, resulting in a huge water consumption, especially when cleaning large-scale membrane curtains, where water resource consumption is particularly prominent. Furthermore, due to the limitations of manual operation, it is difficult to maintain consistent water flow coverage and flushing intensity, leading to uneven removal of sludge and contaminants from the membrane curtain surface. Some areas may not be thoroughly cleaned, and residual sludge can accelerate membrane pore blockage, thereby shortening the membrane curtain's lifespan and affecting the overall operating efficiency of the wastewater treatment system.

[0005] (3) Significant safety hazards: Manual water flushing is usually an open operation. During the cleaning process, the high-pressure water jet impacts the membrane curtain, causing mud and water to splash, making the work area slippery and increasing the risk of workers slipping and falling. In addition, the splashed wastewater may contain harmful substances, increasing the possibility of workers being exposed to potential health risks. Open operation may also lead to wastewater overflow, polluting the surrounding environment of the plant, which violates the original intention of environmentally friendly operation of wastewater treatment plants.

[0006] (4) Low cleaning efficiency: The speed of manual cleaning is limited by the physical strength and operational skills of the workers, and cleaning a single membrane curtain takes a long time. For modern wastewater treatment plants with large treatment capacity, there are a large number of MBR membrane curtains, and the efficiency of manual cleaning can no longer meet the needs of daily maintenance. This inefficient cleaning method not only increases downtime, but also limits the overall operational capacity of the wastewater treatment plant, becoming one of the bottlenecks to improving production capacity.

[0007] (5) Lack of automation and intelligent support: Current MBR membrane curtain cleaning technology mainly relies on manual operation and lacks the support of automated equipment and intelligent control systems. Cleaning parameters (such as water pressure, cleaning time, etc.) cannot be precisely controlled, resulting in a lack of scientific rigor and repeatability in the cleaning process. As the wastewater treatment industry develops towards modernization and intelligence, the limitations of traditional cleaning methods are becoming increasingly apparent, and they cannot meet the future technological demands for high efficiency, energy saving, and environmental protection.

[0008] (6) Potential damage to membrane curtains: During manual water flushing, if the high-pressure water flow is not properly controlled, it may cause mechanical damage to the surface of the membrane curtain, such as membrane fiber breakage or membrane pore enlargement, thereby reducing the filtration accuracy and service life of the membrane. Although the use of chemical cleaning agents can remove organic pollutants, if the concentration or soaking time is not well controlled, it may corrode the membrane material and further aggravate the aging problem of the membrane curtain.

[0009] In summary, existing offline cleaning technologies for MBR membrane curtains have significant shortcomings in terms of labor intensity, resource consumption, safety, efficiency, and level of automation. These deficiencies not only increase the operating costs of wastewater treatment plants but also limit their treatment capacity and environmental benefits. Therefore, there is an urgent need to develop a new type of cleaning equipment that can solve the above problems through innovative design, providing an efficient, environmentally friendly, and safe solution for the maintenance of MBR membrane curtains. Utility Model Content

[0010] The purpose of this invention is to provide a fixed nozzle brush vibration offline cleaning device for MBR membrane curtains.

[0011] The technical solution of this utility model is as follows:

[0012] An offline cleaning device for fixed nozzle brush vibration of MBR membrane curtain includes a main frame, a membrane curtain transmission mechanism, a cleaning mechanism, several brush vibration units, a water collection tank mechanism, and a control unit.

[0013] The main frame is rectangular in shape and is used to house the MBR membrane curtain to be cleaned, and to fix the cleaning mechanism, membrane curtain transmission mechanism, water collection tank mechanism, several brush vibration units and control unit.

[0014] The membrane curtain transmission mechanism includes an upper U-shaped groove, a lower U-shaped groove, a membrane curtain transmission belt, and a membrane curtain transmission belt drive motor. The upper U-shaped groove and the lower U-shaped groove are arranged parallel to each other to accommodate the MBR membrane curtain to be cleaned and simultaneously pass through the main frame. The membrane curtain transmission belt is located in the lower U-shaped groove, and the membrane curtain transmission belt drive motor is located at one end of the lower U-shaped groove to drive the membrane curtain transmission belt.

[0015] The cleaning mechanism includes a main cleaning pipe connected to an external water source, two cleaning loop pipes located on both sides of the membrane curtain conveyor belt, each cleaning loop pipe having several cleaning branch pipes arranged at equal intervals, and each cleaning branch pipe having several nozzles. The main cleaning pipe, the two cleaning loop pipes, the several cleaning branch pipes and the several nozzles are connected in sequence.

[0016] Several brush vibration units are located within the main frame and are evenly distributed on both sides of the membrane curtain conveyor belt within the main frame. Each brush vibration unit includes a brush vibration drive motor, a brush vertical rod, and several brushes. The several brushes are evenly spaced along the length direction of the brush vertical rod. The brush vibration drive motor drives the brush vertical rod to drive the several brushes on it to vibrate. A brush vertical rod is located between two adjacent cleaning branch pipes mentioned above.

[0017] The water collection tank mechanism includes a water collection tank body and an vent pipe located at the lower end of the water collection tank body. The water collection tank body is located below the U-shaped groove under the membrane curtain.

[0018] The control unit is electrically connected to the membrane curtain conveyor belt drive motor of the membrane curtain conveyor mechanism and the brush vibration drive motor of several brush vibration units.

[0019] In a preferred embodiment of this utility model, the plurality of nozzles are connected to the cleaning branch pipe via a plurality of quick connectors.

[0020] In a preferred embodiment of this utility model, the main cleaning pipe is provided with a ball valve and a connection joint for communicating with an external water source.

[0021] In a preferred embodiment of this utility model, a pressure gauge is provided on the cleaning main pipe.

[0022] In a preferred embodiment of this utility model, the vent pipe of the water collection tank mechanism is equipped with a vent valve.

[0023] In a preferred embodiment of the present invention, the water collection tank body is provided with at least one water collection tank handle.

[0024] In a preferred embodiment of this utility model, a caster wheel is provided at each of the four apex corners of the bottom of the water collection tank body.

[0025] In a preferred embodiment of this utility model, the main frame is covered with an acrylic wall panel.

[0026] The beneficial effects of this utility model are:

[0027] 1. This utility model places the MBR membrane curtain on the membrane curtain conveyor belt. After the equipment is started, the membrane curtain can move at a constant speed and be automatically cleaned, replacing manual operation and greatly reducing the labor intensity of workers.

[0028] 2. This utility model adopts a fixed spray pipe for simultaneous water rinsing on both sides and adds a brush vibration unit. By using the brush to beat the membrane fibers, the vibration amplitude is increased, which effectively removes dirt and debris from the surface of the membrane fibers and improves the uniformity and thoroughness of cleaning.

[0029] 3. The brush vibration-assisted cleaning in this utility model makes it easier to wash away sludge, optimizes water flow utilization efficiency, and thus significantly reduces the consumption of greywater.

[0030] 4. The main frame of this utility model is covered with acrylic wall panels and adopts a fully enclosed design. The mud and water generated during rinsing are confined inside the equipment and flow into the water collection tank, preventing overflow or splashing, avoiding slippery ground, improving the working environment for workers and eliminating safety hazards.

[0031] 5. This utility model consists of a main frame, a cleaning mechanism, a membrane curtain transmission mechanism, a water collection tank mechanism, and a brush vibration unit, etc. It has a reasonable structural design, low manufacturing cost, and is easy to promote and apply. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of this utility model.

[0033] Figure 2 This is a schematic diagram of the internal structure of the present invention after the acrylic wall panel has been removed.

[0034] Figure 3 This is a schematic diagram of the membrane curtain transmission mechanism and several brush vibration units of this utility model.

[0035] Figure 4 This is a schematic diagram of the cleaning mechanism of this utility model.

[0036] Figure 5 This is a schematic diagram of the water collection tank mechanism of this utility model. Detailed Implementation

[0037] The technical solution of this utility model will be further explained and described below with reference to specific embodiments and accompanying drawings.

[0038] like Figure 1 and 2As shown, an MBR membrane curtain offline fixed nozzle cleaning device includes a main frame 1, a membrane curtain transmission mechanism 2, a cleaning mechanism 3, several brush vibration units 4, a water collection tank mechanism 5, and a control unit 6.

[0039] The main frame 1 is rectangular and covered with an acrylic wall panel 10 to house the MBR membrane curtain to be cleaned, and to fix the membrane curtain transmission mechanism 2, the cleaning mechanism 3, several brush vibration units 4, the water collection tank mechanism 5, and the control unit 6.

[0040] like Figure 3 As shown, the membrane curtain transmission mechanism 2 includes an upper U-shaped groove 21, a lower U-shaped groove 22, a membrane curtain transmission belt 23, and a membrane curtain transmission belt drive motor 24. The upper U-shaped groove 21 and the lower U-shaped groove 22 are arranged parallel to each other to accommodate the MBR membrane curtain to be cleaned, and simultaneously pass through the main frame 1. The membrane curtain transmission belt 23 is located in the lower U-shaped groove 22, and the membrane curtain transmission belt drive motor 24 is located at one end of the lower U-shaped groove 22 to drive the membrane curtain transmission belt 23 to move the MBR membrane curtain to be cleaned. When the MBR membrane curtain moves to the cleaning mechanism 3, it is cleaned. Cleaning is performed while moving, realizing continuous cleaning operation of the MBR membrane curtain and improving cleaning efficiency.

[0041] like Figure 4 As shown, the cleaning mechanism 3 includes a main cleaning pipe 31 connected to an external water source and two cleaning loop pipes 32. Each cleaning loop pipe 32 is provided with several cleaning branch pipes 33 (preferably four in this embodiment). Each cleaning branch pipe 33 is provided with several nozzles 34. The main cleaning pipe 31, the two cleaning loop pipes 32, the several cleaning branch pipes 33 and the several nozzles 34 are connected in sequence. The main cleaning pipe 31 is provided with a ball valve 311 and a docking connector 312 connected to an external water source. The two cleaning loop pipes 32 are located on both sides of the membrane curtain conveyor belt 23 to correspond to the two sides of the MBR membrane curtain to be cleaned. The several nozzles 34 are connected to the cleaning branch pipes 33 through several quick connectors 340. Preferably, the main cleaning pipe 31 is provided with a pressure gauge 310.

[0042] The number of quick connectors 340 and nozzles 34 depends on the length of the membrane curtain, and the spacing of the quick connectors 340 depends on the width of the water curtain sprayed from the nozzles 34. The number of cleaning branch pipes 33 depends on the width of the membrane curtain, and the spacing of the cleaning branch pipes 33 is 40cm. The nozzles 34 on both sides face each other, cleaning the membrane curtain simultaneously from both sides, which can improve the cleaning rate. Pressure gauge 310 is used to observe the water pressure of the main cleaning pipe 31, and the water pressure of the main cleaning pipe 31 is controlled between 0.7-1.0 MPa.

[0043] like Figure 2 and 3As shown, several brush vibration units 4 are located within the main frame 1 and are evenly distributed on both sides of the membrane curtain conveyor belt 23 within the main frame 1 to correspond to the two sides of the MBR membrane curtain to be cleaned. Each brush vibration unit 4 includes a brush vibration drive motor 41, a brush vertical rod 42, and several brushes 43. The several brushes 43 are evenly spaced along the length direction of the brush vertical rod 42. The brush vibration drive motor 41 drives the brush vertical rod 42 to drive the several brushes 43 on it to vibrate. A brush vertical rod 42 is located between two adjacent cleaning branch pipes 33. In this embodiment, the number of brush vibration units 4 is preferably six. Three brush vibration units 4 are evenly spaced on one side of the membrane curtain conveyor belt 23, and the distance between the brush vertical rods 42 of two adjacent brush vibration units 4 on this side is 40cm. The bristles on the brushes 43 are made of EVA foam and are 14-16cm long. The brushes 43 of the brush vibration units 4 located on both sides of the membrane curtain conveyor belt 23 rotate in the opposite direction to the movement of the MBR membrane curtain to be cleaned. When the MBR membrane curtain to be cleaned passes through, the brushes 43 rotate and beat the membrane fibers, causing the membrane fibers to vibrate violently, increasing the spacing between the membrane fibers, and making it easier for the sludge and debris attached to the surface of the membrane fibers to be washed away by the cleaning mechanism 3.

[0044] like Figure 5 As shown, the water collection tank mechanism 5 includes a water collection tank body 51 (a rectangular structure welded from stainless steel plates) and a drain pipe 52 located at the lower end of the water collection tank body 51. The water collection tank body 51 is located below the U-shaped groove 22 under the membrane curtain and is used to collect the sludge and other debris washed down and discharge them to the sewage pipe network through the drain pipe 52. The drain pipe 52 is equipped with a drain valve 521. The water collection tank body 51 is equipped with at least one water collection tank handle 511 (for convenient pushing, pulling, moving the water collection tank mechanism 5, etc.). A caster wheel 512 is provided at each of the four top corners of the bottom of the water collection tank body 51 (to realize the movement operation of the water collection tank mechanism 5).

[0045] The control unit 6 is electrically connected to the membrane curtain conveyor belt drive motor 24 of the membrane curtain conveyor mechanism 2 and the brush vibration drive motors 41 of the several brush vibration units 4. Preferably, the control unit 6 is equipped with a frequency converter, which can be used to adjust the moving speed of the membrane curtain conveyor belt 23.

[0046] In this invention, the cleaning nozzle is fixed, and the MBR membrane curtain to be cleaned moves on the membrane curtain transmission mechanism 2. When the equipment is started, the MBR membrane curtain to be cleaned moves at a uniform speed through the membrane curtain transmission mechanism 2. The cleaning mechanism 3 automatically and simultaneously rinses both sides of the MBR membrane curtain with water. Simultaneously, several brush vibration units 4 beat the membrane fibers. This design uses minimal water, achieves excellent rinsing results, reduces labor intensity, and increases cleaning efficiency. The main frame 1 of this invention is covered with acrylic wall panels 10, making the entire device fully enclosed. This prevents the rinsed mud and water from splashing everywhere, improving the working environment for workers and eliminating safety hazards.

[0047] The above description is only a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model patent and the contents of the specification should still fall within the scope of the present utility model.

Claims

1. A fixed nozzle brush vibration offline cleaning device for MBR membrane curtains, characterized in that: It includes a main frame, a membrane curtain transmission mechanism, a cleaning mechanism, several brush vibration units, a water collection tank mechanism, and a control unit. The main frame is rectangular in shape and is used to house the MBR membrane curtain to be cleaned, and to fix the cleaning mechanism, membrane curtain transmission mechanism, water collection tank mechanism, several brush vibration units and control unit. The membrane curtain transmission mechanism includes an upper U-shaped groove, a lower U-shaped groove, a membrane curtain transmission belt, and a membrane curtain transmission belt drive motor. The upper U-shaped groove and the lower U-shaped groove are arranged parallel to each other to accommodate the MBR membrane curtain to be cleaned and simultaneously pass through the main frame. The membrane curtain transmission belt is located in the lower U-shaped groove, and the membrane curtain transmission belt drive motor is located at one end of the lower U-shaped groove to drive the membrane curtain transmission belt. The cleaning mechanism includes a main cleaning pipe connected to an external water source, two cleaning loop pipes located on both sides of the membrane curtain conveyor belt, each cleaning loop pipe having several cleaning branch pipes arranged at equal intervals, and each cleaning branch pipe having several nozzles. The main cleaning pipe, the two cleaning loop pipes, the several cleaning branch pipes and the several nozzles are connected in sequence. Several brush vibration units are located within the main frame and are evenly distributed on both sides of the membrane curtain conveyor belt within the main frame. Each brush vibration unit includes a brush vibration drive motor, a brush vertical rod, and several brushes. The several brushes are evenly spaced along the length direction of the brush vertical rod. The brush vibration drive motor drives the brush vertical rod to drive the several brushes on it to vibrate. A brush vertical rod is located between two adjacent cleaning branch pipes mentioned above. The water collection tank mechanism includes a water collection tank body and an vent pipe located at the lower end of the water collection tank body. The water collection tank body is located below the U-shaped groove under the membrane curtain. The control unit is electrically connected to the membrane curtain conveyor belt drive motor of the membrane curtain conveyor mechanism and the brush vibration drive motor of several brush vibration units.

2. The fixed nozzle brush vibration offline cleaning device for MBR membrane curtain as described in claim 1, characterized in that: The nozzles are connected to the cleaning branch pipes via several quick connectors.

3. The fixed nozzle brush vibration offline cleaning device for MBR membrane curtain as described in claim 1, characterized in that: The main cleaning pipe is equipped with a ball valve and a connection joint that connects to an external water source.

4. The fixed nozzle brush vibration offline cleaning device for MBR membrane curtain as described in claim 1, characterized in that: A pressure gauge is installed on the main cleaning pipe.

5. The fixed nozzle brush vibration offline cleaning device for MBR membrane curtain as described in claim 1, characterized in that: The vent pipe of the water collection tank mechanism is equipped with a vent valve.

6. The fixed nozzle brush vibration offline cleaning device for MBR membrane curtain as described in claim 1, characterized in that: The water collection tank body is equipped with at least one water collection tank handle.

7. The fixed nozzle brush vibration offline cleaning device for MBR membrane curtain as described in claim 1, characterized in that: Each of the four corners of the bottom of the water collection tank is equipped with a caster wheel.

8. A fixed nozzle brush vibration offline cleaning device for MBR membrane curtains as described in any one of claims 1 to 7, characterized in that: The main frame is covered with acrylic wall panels.

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