Device and method for cleaning MBR curtain type membrane

Abstract

The invention discloses a cleaning device and method for an MBR curtain type membrane. The cleaning device comprises a cleaning support, a first driving mechanism for driving the cleaning support to ascend and descend, a second driving mechanism for driving the cleaning support to horizontally move left and right, and a third driving mechanism for driving the cleaning support to horizontally move front and back. The cleaning bracket comprises a cleaning plate and a connecting seat which are oppositely arranged, a row of air nozzles are arranged in the middle of the cleaning plate, and inflatable airbags are arranged on the upper and lower sides of the air nozzles; the second driving mechanism drives the cleaning support to extend into the MBR curtain type membrane, the two cleaning plates are arranged on the two sides of the MBR curtain type membrane respectively, the inflation air bag is clamped on the MBR curtain type membrane, and the air nozzle sprays high-pressure air flow towards the MBR curtain type membrane. Membrane filaments of an MBR curtain type membrane are clamped through the inflatable air bag, dirt on the membrane filaments is washed through high-pressure airflow, it can be guaranteed that no dead angle exists in washing, the short and small brush layer is arranged on the surface of the inflatable air bag, the loose dirt after washing is brushed away, and the membrane filament washing efficiency and washing quality are further improved.

Description

Technical Field

[0001] The invention relates to the technical field of MBR curtain membranes, and in particular to a cleaning device and method for MBR curtain membranes. Background Art

[0002] MBR curtain membrane is a special type of membrane structure used in MBR membrane bioreactor (Membrane Bio-Reactor) system. It consists of multiple flat membrane units arranged vertically, and its shape is similar to curtains, hence the name "curtain membrane". This design increases the membrane area per unit volume and improves the filtration efficiency. MBR curtain membrane has been widely used in sewage treatment systems in various industries in my country, and is particularly suitable for the treatment of urban domestic sewage and industrial wastewater.

[0003] When treating sewage, cleaning of MBR curtain membrane is an important part to maintain its efficient operation and extend its service life. At present, MBR curtain membrane mainly includes two categories: physical cleaning and chemical cleaning. Physical cleaning is to remove pollutants on the membrane surface through mechanical force. Commonly used methods include online air cleaning, online water backwashing and direct removal cleaning. The online cleaning method mainly uses air flow or water flow to flush the membrane surface, but it is not effective for cleaning stubborn stains. Sometimes the membrane components need to be disassembled one by one and placed in the cleaning tank for cleaning, which makes the entire membrane group of the station temporarily unable to filter, affecting the overall filtration and purification efficiency while further increasing the complexity and tediousness of the cleaning process. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a cleaning device and method for an MBR curtain membrane, which can thoroughly and effectively clean the MBR curtain membrane online.

[0005] To this end, the technical solution of the present invention is: a cleaning device for an MBR curtain membrane, comprising a cleaning bracket, a first driving mechanism driving the cleaning bracket to rise and fall, a second driving mechanism driving the cleaning bracket to translate left and right, and a third driving mechanism driving the cleaning bracket to translate forward and backward; the cleaning bracket comprises a cleaning plate and a connecting seat arranged opposite to each other, a row of air nozzles are arranged in the middle of the cleaning plate, and inflatable air bags are arranged on the upper and lower sides of the air nozzles; the second driving mechanism drives the cleaning bracket to extend into the MBR curtain membrane, two cleaning plates are respectively placed on both sides of the MBR curtain membrane, the inflatable air bags are clamped on the MBR curtain membrane, and the air nozzles spray high-pressure airflow toward the MBR curtain membrane.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: a brush layer is provided on the surface of the inflatable airbag, and the brush layer is in contact with the MBR curtain membrane.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: a long strip of magnetic adsorption surface is provided under the cleaning plate.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: air nozzles are arranged on the opposite sides of the cleaning plates at both sides, and the nozzles of the air nozzles are inclined downward.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: the connecting seat is provided with a first gas connector and a second gas connector, the cleaning plate is provided with a first air channel and a second air channel, the first air channel connects each gas nozzle, and the second air channel connects each inflatable airbag.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: the first driving mechanism drives the cleaning bracket to move up and down, and the inflated airbag clamps the MBR curtain membrane to move up and down.

[0011] Another technical solution of the present invention is: a method for cleaning an MBR curtain membrane, using the above-mentioned cleaning device, comprising the following steps:

[0012] 1) In the initial state, the cleaning bracket is located at the leftmost and highest position, and the inflatable airbag on the cleaning bracket is not inflated, and the jet nozzle is in an idle state;

[0013] 2) In the cleaning state, the third driving mechanism drives the cleaning bracket to move to the side of one of the MBR curtain membranes to be cleaned;

[0014] 3) The second driving mechanism drives the cleaning bracket to be inserted into the MBR curtain membrane, and the cleaning plates on both sides are located on both sides of the MBR curtain membrane;

[0015] 4) Fill the airbags with gas, and the airbags on both sides expand and clamp on the membrane wires of the MBR curtain membrane;

[0016] 5) The air jet nozzle is connected to the high-pressure air pump, and the air jet nozzle sprays high-pressure airflow toward the membrane filament;

[0017] 6) The first driving mechanism drives the cleaning bracket to move downward, the inflatable airbag clamps the membrane wire and moves downward, and the bristle layer on the surface of the inflatable airbag brushes the membrane wire;

[0018] 7) After the cleaning bracket moves to the lower position, the cleaning of the MBR curtain membrane is completed;

[0019] 8) The cleaning bracket is reset, and the third driving mechanism drives the cleaning bracket to move to the next side of the MBR curtain membrane to be cleaned, and repeats the above cleaning work.

[0020] On the basis of the above scheme and as a preferred scheme of the above scheme: in the step 6), the magnetic adsorption surface under the cleaning plate can simultaneously adsorb the metal dirt that has been scrubbed off.

[0021] On the basis of the above scheme and as a preferred scheme of the above scheme: if a certain MBR curtain membrane is blocked, the cleaning bracket can be moved to the side of the MBR curtain membrane, and only the MBR curtain membrane is cleaned.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. Use the inflatable airbag to clamp the membrane filaments of the MBR curtain membrane, and then use high-pressure airflow to flush the dirt on the membrane filaments, which can ensure that there is no dead angle in the flushing. A short brush layer is set on the surface of the inflatable airbag, which does not affect the clamping effect of the inflatable airbag, and can use the brush layer to brush off the loose dirt after flushing, further improving the cleaning efficiency and cleaning quality of the membrane filaments.

[0024] 2. The cleaning bracket only cleans one piece of MBR curtain membrane each time, and thoroughly cleans the MBR curtain membrane to ensure that there is no dead corner in cleaning, thus extending the service life of the MBR curtain membrane.

[0025] 3. According to the characteristics of sewage, the cleaning plate can be provided with a magnetic adsorption surface to adsorb the dirt containing heavy metals that is scrubbed and completely remove the dirt. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the initial state of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the present invention in a cleaning state;

[0028] Figure 3 It is a structural side view of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the cleaning bracket and the MBR curtain membrane of the present invention;

[0030] Figure 5 It is a structural schematic diagram of the cleaning support of the present invention;

[0031] Figure 6 This is a structural cross-sectional view of the cleaning bracket of the present invention.

[0032] Marked in the figure are: workbench 1, cleaning bracket 2, cleaning plate 21, connecting seat 22, air nozzle 23, inflatable airbag 24, bristle layer 25, first gas connector 26, second gas connector 27, magnetic adsorption surface 28, first driving mechanism 3, first mounting plate 31, first guide rail 32, first screw rod 33, first motor 34, second driving mechanism 4, second mounting plate 41, second guide rail 42, second screw rod 43, second motor 44, third driving mechanism 5, third guide rail 51, third screw rod 52, third motor 53, MBR curtain membrane 6, membrane wire 61. DETAILED DESCRIPTION

[0033] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the present invention, "several" and "a number" mean two or more, unless otherwise clearly and specifically defined.

[0035] See the attached drawings. The MBR curtain membrane cleaning device described in this embodiment includes a workbench 1, a cleaning bracket 2, a first driving mechanism 3 for driving the cleaning bracket 2 to rise and fall, a second driving mechanism 4 for driving the cleaning bracket 2 to move left and right, and a third driving mechanism 5 for driving the cleaning bracket 2 to move forward and backward; the first driving mechanism 3 drives the cleaning bracket 2 to move up and down, and the inflatable airbag 24 clamps the MBR curtain membrane 6 to move up and down.

[0036] The first driving mechanism 3 includes a first mounting plate 31 arranged vertically, on which a first guide rail 32, a first screw rod 33 and a first motor 34 are provided. The cleaning bracket 2 is slidably mounted on the first guide rail 32 and threadedly engaged with the first screw rod 33. The first motor 34 drives the first screw rod 33 to rotate, thereby driving the cleaning bracket 2 to move up and down.

[0037] The second driving bracket 4 includes a second mounting plate 41, on which a second guide rail 42, a second screw rod 43 and a second motor 44 are arranged horizontally to the left and right. The first mounting plate 31 is slidably mounted on the second guide rail 42 through a slider and is threadedly engaged with the second screw rod 43. The second motor 44 drives the second screw rod 43 to rotate, thereby driving the cleaning bracket 2 to move left and right and extend into the MBR curtain membrane 6.

[0038] The third driving mechanism 5 includes a third guide rail 51, a third screw rod 52 and a third motor 53. The third guide rail 51 is installed on the workbench 1. The second mounting plate 41 is slidably installed on the third guide rail 51 through a slider and is threadedly matched with the third screw rod 52. The third motor 53 drives the third screw rod 52 to rotate, thereby driving the cleaning bracket 2 to move forward and backward, extend into different MBR curtain membranes, and clean different MBR curtain membranes.

[0039] The cleaning bracket 2 includes a cleaning plate 21 and a connecting seat 22 arranged opposite to each other. A row of air nozzles 23 are arranged on the opposite sides of the cleaning plates 21 on both sides, and the nozzles of the air nozzles 23 are tilted downward. The air nozzles 23 are located in the middle of the cleaning plate 21, and an inflatable airbag 24 is arranged on the upper and lower sides of the air nozzle 23; a brush layer 25 is arranged on the surface of the inflatable airbag 24, and the brush layer 25 is in contact with the MBR curtain membrane 6. The inflatable airbag can be made of elastic rubber material, and the brush layer is attached to the surface of the inflatable airbag, which will not interfere with the inflation and deflation of the inflatable airbag.

[0040] The connection seat 22 is provided with a first gas connector 26 and a second gas connector 27 , and the cleaning plate 21 is provided with a first air passage and a second air passage inside. The first air passage is connected to each gas nozzle 23 , and the second air passage is connected to each inflatable airbag 24 .

[0041] The second driving mechanism 4 drives the cleaning bracket 2 to extend into the MBR curtain membrane 6, two cleaning plates 21 are respectively placed on both sides of the MBR curtain membrane 6, the inflatable airbag 24 is clamped on the MBR curtain membrane 6, and the air nozzle 23 sprays high-pressure airflow toward the MBR curtain membrane 6. A long strip of magnetic adsorption surface 28 is provided below the cleaning plate 21.

[0042] Cleaning method:

[0043] 1) In the initial state, the cleaning bracket 2 is located at the leftmost and highest position, and the inflatable airbag 24 on the cleaning bracket 2 is in an uninflated state, and the air nozzle 23 is in an idle state;

[0044] 2) In the cleaning state, the third driving mechanism 5 drives the cleaning bracket 2 to move to the side of one of the MBR curtain membranes 6 to be cleaned;

[0045] 3) The second driving mechanism 4 drives the cleaning bracket 2 to be inserted into the MBR curtain membrane 6, and the cleaning plates 21 on both sides are located on both sides of the MBR curtain membrane 6;

[0046] 4) Inflate the airbags 24 with gas, and the airbags 24 on both sides are inflated and clamped on the membrane wires 61 of the MBR curtain membrane 6. The four airbags are clamped on the membrane wires in cooperation to prevent the membrane wires from shaking when being flushed, resulting in flushing dead corners, and the airbags are soft clamps for the membrane wires, which will not cause the membrane wires to break;

[0047] 5) The air jet nozzle 23 is connected to the high-pressure air pump, and the air jet nozzle 23 sprays high-pressure airflow toward the membrane filaments to wash away the dirt on the membrane filaments;

[0048] 6) The first driving mechanism 3 drives the cleaning bracket 2 to move downward, and the inflatable airbag 24 moves downward while holding the membrane filament 61, and the bristle layer 25 on the surface of the inflatable airbag 24 brushes the membrane filament 61; when the inflatable airbag 24 moves downward, the bristles on the surface of the inflatable airbag 24 brush off the dirt just loosened by the airflow, and further clean the outer surface of the membrane filament. At the same time, according to the sewage in the working environment of the MBR curtain membrane, a magnetic adsorption surface 28 can be selectively provided under the cleaning plate 21 to adsorb dirt containing heavy metals;

[0049] 7) After the cleaning bracket 2 moves to the lower position, the cleaning of the MBR curtain membrane 6 is completed;

[0050] 8) The cleaning support 2 is reset, and the third driving mechanism 5 drives the cleaning support 2 to move to the side of the next MBR curtain membrane 6 to be cleaned, and repeats the above cleaning work.

[0051] In this embodiment, all MBR curtain membranes can be cleaned in sequence, or when a certain MBR curtain membrane is blocked, the cleaning bracket can be moved to the side of the MBR curtain membrane to clean only the MBR curtain membrane.

[0052] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A cleaning device for MBR curtain membrane, characterized in that: It includes a cleaning bracket, a first driving mechanism for driving the cleaning bracket to rise and fall, a second driving mechanism for driving the cleaning bracket to move left and right, and a third driving mechanism for driving the cleaning bracket to move forward and backward; the cleaning bracket includes cleaning plates and a connecting seat arranged opposite to each other, a row of air nozzles are arranged in the middle of the cleaning plates, and inflatable air bags are arranged on the upper and lower sides of the air nozzles; the second driving mechanism drives the cleaning bracket to extend into the MBR curtain membrane, the two cleaning plates are respectively placed on both sides of the MBR curtain membrane, the inflatable air bags are clamped on the MBR curtain membrane, and the air nozzles spray high-pressure airflow toward the MBR curtain membrane.

2. The MBR curtain membrane cleaning device according to claim 1, characterized in that: A brush layer is provided on the surface of the inflatable airbag, and the brush layer is in contact with the MBR curtain membrane.

3. The MBR curtain membrane cleaning device according to claim 1, characterized in that: A long strip of magnetic adsorption surface is arranged below the cleaning plate.

4. The MBR curtain membrane cleaning device according to claim 1, characterized in that: Air jet nozzles are arranged on the opposite sides of the cleaning plates, and the nozzles of the air jet nozzles are inclined downward.

5. The MBR curtain membrane cleaning device according to claim 1, characterized in that: The connecting seat is provided with a first gas connector and a second gas connector, the cleaning plate is provided with a first air channel and a second air channel inside, the first air channel is connected to each gas nozzle, and the second air channel is connected to each inflatable airbag.

6. The MBR curtain membrane cleaning device according to claim 1, characterized in that: The first driving mechanism drives the cleaning bracket to move up and down, and the inflated airbag clamps the MBR curtain membrane to move up and down.

7. A method for cleaning an MBR curtain membrane, characterized in that: Using the cleaning device according to any one of claims 1 to 6 comprises the following steps: 1) In the initial state, the cleaning bracket is located at the leftmost and highest position, and the inflatable airbag on the cleaning bracket is not inflated, and the jet nozzle is in an idle state; 2) In the cleaning state, the third driving mechanism drives the cleaning bracket to move to the side of one of the MBR curtain membranes to be cleaned; 3) The second driving mechanism drives the cleaning bracket to be inserted into the MBR curtain membrane, and the cleaning plates on both sides are located on both sides of the MBR curtain membrane; 4) Fill the airbags with gas, and the airbags on both sides expand and clamp on the membrane wires of the MBR curtain membrane; 5) The air jet nozzle is connected to the high-pressure air pump, and the air jet nozzle sprays high-pressure airflow toward the membrane filament; 6) The first driving mechanism drives the cleaning bracket to move downward, the inflatable airbag clamps the membrane wire and moves downward, and the bristle layer on the surface of the inflatable airbag brushes the membrane wire; 7) After the cleaning bracket moves to the lower position, the cleaning of the MBR curtain membrane is completed; 8) The cleaning bracket is reset, and the third driving mechanism drives the cleaning bracket to move to the next side of the MBR curtain membrane to be cleaned, and repeats the above cleaning work.

8. The MBR curtain membrane cleaning method according to claim 7, characterized in that: In step 6), the magnetic adsorption surface below the cleaning plate can simultaneously adsorb the metal dirt that has been scrubbed off.

9. The method for cleaning the MBR curtain membrane according to claim 7, characterized in that: If a certain MBR curtain membrane is clogged, the cleaning bracket can be moved to the side of the MBR curtain membrane to clean only the MBR curtain membrane.

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