Membrane filament column structure and membrane device
By designing a membrane wire column structure of multiple groups of miniaturized membrane column units and current collectors, the first and second aeration structures are used to achieve self-cleaning and large-scale cleaning, the problems of high membrane wire integration and unsatisfactory aeration effect in the existing membrane technology are solved, and the cleaner ability and pollution resistance of membrane wire are improved.
Patent Information
- Application Number
- CN202411892216.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-03-21
AI Technical Summary
In sewage treatment, the existing membrane technology is inconvenient to replace due to the high degree of membrane filament integration and the aeration effect is not ideal, which affects the self-cleaning ability.
A membrane wire column structure is designed, including multiple groups of miniaturized membrane column units and current collectors, and a small amplitude self-cleaning is achieved through the first aeration structure and a batch-type large amplitude cleaning is achieved through the second aeration structure.
It improves the cleaner ability and anti-pollution ability of the membrane wire, ensures the efficiency of water production, and simplifies the replacement and maintenance of the membrane wire.
Smart Images
Figure CN119656871A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of sewage treatment, and in particular to a membrane wire column structure and a membrane device. Background Art
[0002] With the development of the membrane industry, the application of membrane technology has attracted more and more attention. Immersed microfiltration or ultrafiltration sewage treatment technology is widely used in the fields of domestic sewage treatment, industrial wastewater treatment, water supply treatment, etc. However, during the application process, due to the high integration of membrane fibers, it is not convenient to replace, and the aeration effect is not very ideal, which in turn affects the self-cleaning ability. Summary of the invention
[0003] The present application aims to solve one of the above-mentioned technical problems in the prior art. To this end, an embodiment of the present application provides a membrane wire column structure.
[0004] The embodiment of the present application also provides a membrane device.
[0005] According to an embodiment of the first aspect of the present application, a membrane filament column structure is provided, comprising a plurality of groups of membrane column units, wherein the membrane column units comprise a first aeration structure and a plurality of membrane filaments arranged in an array, wherein the first aeration structure is arranged near the ends of the membrane filaments; two current collecting parts, wherein the current collecting parts comprise a confluence outlet and at least two confluence inlets, wherein the confluence inlets are arranged in a circular array, wherein one end of the membrane column unit is connected to the confluence inlet of one of the current collecting parts, and the other end of the membrane column unit is connected to the confluence inlet of the other current collecting part; a second aeration structure, wherein the current collecting part near the first aeration structure is provided with the second aeration structure, wherein the second aeration structure is located at the center of the current collecting part, wherein the second aeration structure comprises an air collecting cavity and a trigger part, wherein the trigger part cover is arranged at the exhaust port of the air collecting cavity, wherein the trigger part can rotate, and the airflow gathered at the exhaust port can drive the trigger part to flip open.
[0006] The above-mentioned membrane filament column structure has at least the following beneficial effects: the membrane filament column structure of the present application is provided with multiple groups of miniaturized membrane column units, and then the multiple groups of membrane column units are assembled together through two collecting parts. When in use, the bubbles formed by the airflow continuously delivered to the first aeration structure of the membrane column unit can realize the cleaning of the membrane filaments of a single group of membrane column units, and then the airflow is continuously delivered to the air collecting cavity of the second aeration structure. After the airflow at the exhaust port is gathered to a certain extent, it can generate sufficient buoyancy to drive the trigger part to rotate, and the exhaust port is located in the center of the water collecting part. Therefore, the airflow gathered at the exhaust port generates a large bubble when the trigger part is flipped open to realize a strong cleaning of all the membrane column units. Compared with the membrane column structure with the same amount of membrane filaments, the membrane filament column structure of the present application realizes a small degree of self-cleaning through the first aeration structure and an intermittent (pulse) large-scale cleaning through the second aeration structure, which greatly improves the cleaning ability and anti-pollution ability of the membrane filaments and ensures the efficiency of water production.
[0007] According to the membrane wire column structure described in the embodiment of the first aspect of the present application, when the trigger member covers the exhaust port, the trigger member is inclined compared to the horizontal plane, and one end of the trigger member having a rotating central axis is lower than the other end of the trigger member.
[0008] According to the membrane wire column structure described in the embodiment of the first aspect of the present application, the inclination of the trigger member is set to 0°~10°, and the rotation range of the trigger member is set to 0°~60°.
[0009] According to the membrane wire column structure described in the embodiment of the first aspect of the present application, the second aeration structure also includes a shell, one side of the shell is open to form the air collecting chamber, the other side of the shell is provided with a hollow opening, the edge of the hollow opening is provided with a surrounding edge to form the exhaust port, the end face of the exhaust port is inclined compared to the horizontal plane, the inclination of the end face of the exhaust port is set to 0°~10°, and the trigger cover is provided on the surrounding edge.
[0010] According to the membrane wire column structure described in the embodiment of the first aspect of the present application, the trigger member is hingedly connected to the surrounding edge, and a continuous retaining edge is arranged on the edge of the trigger member. When the trigger member covers the exhaust port, the surrounding edge is located on the inner side of the retaining edge.
[0011] According to the membrane wire column structure described in the embodiment of the first aspect of the present application, the second aeration structure also includes a first gas injection end, the first gas injection end is connected to the gas collecting cavity, and the side where the first gas injection end is located is adjacent to or opposite to the side of the shell having the exhaust port.
[0012] According to the membrane filament column structure described in the embodiment of the first aspect of the present application, the membrane column unit includes two water collecting boxes, one end of the membrane filament is fixed to one of the water collecting boxes, the other end of the membrane filament is fixed to the other water collecting box, and the first aeration structure is arranged in one of the water collecting boxes.
[0013] According to the membrane filament column structure described in the embodiment of the first aspect of the present application, the first aeration structure includes an aeration plate and a second air injection end, the second air injection end is arranged on the water collecting box, the aeration plate is arranged on one side of the water collecting box for fixing the membrane filaments, a plurality of aeration tubes are arranged on the aeration plate, and a diversion chamber is arranged in the water collecting box, one end of the diversion chamber is connected to the aeration tube, and the other end of the diversion chamber is connected to the second air injection end.
[0014] According to the membrane wire column structure described in the embodiment of the first aspect of the present application, the water collecting box has a docking port, and the docking port is detachably connected to the confluence inlet.
[0015] According to an embodiment of the second aspect of the present application, a membrane device is provided, comprising a water collecting member in a frame structure; a plurality of groups of membrane wire column structures described in the first aspect, wherein the membrane wire column structure array is arranged on the water collecting member, and the confluence outlet is detachably connected to the water collecting member.
[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The present application is further described below with reference to the accompanying drawings and embodiments;
[0018] Figure 1 This is a schematic diagram of the structure of the membrane wire column structure of the embodiment of the present application. Figure 1 ;
[0019] Figure 2 This is a schematic diagram of the structure of the membrane wire column structure of the embodiment of the present application. Figure 2 ;
[0020] Figure 3 This is a schematic diagram of the structure of the membrane wire column structure of the embodiment of the present application. Figure 3 ;
[0021] Figure 4 is a schematic diagram of the connection between the current collecting member and the water collecting box in an embodiment of the present application;
[0022] Figure 5 is a connection diagram of the second aeration structure of the current collecting member in an embodiment of the present application;
[0023] Figure 6 is a schematic structural diagram of a current collecting member in an embodiment of the present application;
[0024] Figure 7 This is a schematic diagram of the structure of the second aeration structure in the embodiment of the present application. Figure 1 ;
[0025] Figure 8 This is a schematic diagram of the structure of the second aeration structure in the embodiment of the present application. Figure 2 ;
[0026] Fig. 9 is a structural schematic diagram of a membrane column unit in an embodiment of the present application;
[0027] Fig.10 is a schematic structural diagram of a water collecting box in an embodiment of the present application;
[0028] Fig.11 It is a schematic diagram of the structure of the membrane device in an embodiment of the present application.
[0029] Figure numerals: flow collecting part 100, flow confluence outlet 110, flow confluence inlet 120, connecting plate 130, membrane column unit 200, water collecting box 220, second gas injection end 221, aeration tube 222, membrane wire 230, second aeration structure 300, shell 310, exhaust port 311, trigger part 320, first gas injection end 330, water collecting part 510. DETAILED DESCRIPTION
[0030] This section will describe in detail the specific embodiments of the present application. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present application, but it cannot be understood as a limitation on the scope of protection of the present application.
[0031] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 therefore should not be understood as a limitation on the present application.
[0032] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0033] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.
[0034] The membrane mentioned in this application refers to a hollow fiber membrane, which is a self-supporting membrane with a fiber-like appearance. The hollow fiber membrane can be processed into a fiber with a hollow inner cavity using polysulfone, dimethylacetamide or PVDF (polyvinylidene fluoride) as raw materials, and then divided by a high permeability polymer, which has selective permeability characteristics and is often used for sewage filtration.
[0035] Reference Figures 1 to 3 An embodiment of the present application provides a membrane wire column structure, wherein the membrane wire column structure includes a membrane column unit 200 , a current collecting member 100 and a second aeration structure 300 .
[0036] The membrane column units 200 are arranged in multiple groups, wherein the membrane column units 200 include a plurality of membrane filaments 230 and a first aeration structure. The first aeration structure is arranged near the end of the membrane filaments 230. By conveying airflow to the first aeration structure, the first aeration structure can generate continuous small bubbles to continuously clean the membrane filaments 230 of the membrane column unit 200, thereby effectively improving the anti-pollution effect of the membrane filaments 230.
[0037] Among them, there are two current collecting parts 100 in total, and multiple groups of membrane column units 200 are connected into one by the two current collecting parts 100. The current collecting part 100 includes a confluence outlet 110 and at least two confluence inlets 120. The confluence inlets 120 are arranged in a circular array. One end of the membrane column unit 200 is connected to the confluence inlet 120 of one of the current collecting parts 100, and the other end of the membrane column unit 200 is connected to the confluence inlet 120 of the other current collecting part 100. The water collected by the membrane filaments 230 is collected from the confluence inlet 120 to the confluence outlet 110, and then transported to the corresponding pipeline through the confluence outlet 110.
[0038] Among them, the current collecting member 100 near the first aeration structure is provided with a second aeration structure 300, and the second aeration structure 300 is located at the center of the current collecting member 100. Since the confluence inlets 120 are arranged in a circumferential array, and correspondingly, the mold column units are also arranged in a circumferential array, the middle of the current collecting member 100 has an accommodation space for placing the second aeration structure 300. The second aeration structure 300 includes a gas collecting cavity and a trigger member 320, and the trigger member 320 is covered at the exhaust port 311 of the gas collecting cavity, and the trigger member 320 can rotate, and the airflow gathered at the exhaust port 311 can drive the trigger member 320 to flip open.
[0039] When in use, the bubbles formed by the airflow continuously delivered to the first aeration structure of the membrane column unit 200 can achieve individual cleaning of the membrane filaments 230 of a single group of membrane column units 200, and then by continuously delivering airflow to the air collecting chamber of the second aeration structure 300, the airflow at the exhaust port 311 can generate sufficient buoyancy to drive the trigger member 320 to rotate after it is gathered to a certain extent, and the exhaust port 311 is located in the center of the water collecting member. Therefore, the airflow gathered at the exhaust port 311 generates a large bubble when the trigger member 320 is flipped open, which achieves a strong cleaning of all the membrane column units 200. Compared with the membrane column structure with the same amount of membrane filaments 230, the membrane filament column structure of the present application achieves a small degree of self-cleaning through the first aeration structure and an intermittent (pulse) large-scale cleaning through the second aeration structure 300, which greatly improves the cleaning ability and anti-pollution ability of the membrane filaments 230 and ensures the efficiency of water production.
[0040] Compared with the prior art, the membrane wire column structure of the present application is provided with multiple groups of miniaturized membrane column units 200, and then the multiple groups of membrane column units 200 are assembled together through two current collecting parts 100. If one of the membrane column units 200 is broken, it is easy to replace, which is convenient for subsequent maintenance.
[0041] like Figures 4 to 6 As shown, in some embodiments provided by the present application, the collecting piece 100 is provided with four confluence inlets 120 and one confluence outlet 110, and the confluence outlet 110 is located at the center of the circular array of the four confluence inlets 120, and the confluence outlet 110 and the confluence inlet 120 are oriented in opposite directions, so that there is space between the confluence inlets 120 for placing the second aeration structure 300, and when the four groups of membrane column units 200 are assembled into one through the collecting piece 100, the membrane column units 200 are not in a tightly attached state, which can make the aeration cleaning more thorough and prevent blockage from affecting the water production effect.
[0042] like Figure 7 and Figure 8 As shown, in the embodiment of the present application, when the trigger member 320 covers the exhaust port 311, the trigger member 320 is tilted compared to the horizontal plane, and one end of the trigger member 320 with a rotating central axis is lower than the other end of the trigger member 320. When the airflow is continuously and uninterruptedly introduced into the gas collecting chamber, the airflow floats up under the action of water buoyancy, and the exhaust port 311 is the highest point of the gas collecting chamber. When the airflow at the exhaust port 311 reaches a certain amount, the buoyancy can drive the trigger member 320 to flip open, thereby achieving an intermittent exhaust state, that is, large bubbles can be intermittently generated to significantly clean the membrane column unit 200.
[0043] Setting the trigger member 320 to be inclined relative to the horizontal plane can, on the one hand, make the discharge of the gathered gas smoother, and also facilitate the trigger member 320 to return to its original position as soon as possible to continue the next aeration after a sufficient amount of gas leaves the exhaust port 311; on the other hand, it can also prevent the airflow from leaking from the rotating connection of the trigger member 320 and affecting the frequency and effect of aeration.
[0044] By controlling the tilt angle of the trigger member 320 , the frequency of opening the trigger member 320 can be adjusted, and leakage during the airflow convergence process can also be reduced.
[0045] In some embodiments, the inclination of the trigger member 320 is set to 0° to 10°. In the embodiment of the present application, the inclination angle of the trigger member 320 is set to between 5° and 10°. Specifically, the inclination angle of the trigger member 320 can be 6°.
[0046] The rotatable range of the trigger member 320 is set to 0° to 60°. When the rotatable angle of the trigger member 320 is set too large, if the gas volume suddenly increases, the trigger member 320 may not be able to automatically recover after opening.
[0047] In some specific embodiments, the second aeration structure 300 also includes a shell 310, one side of the shell 310 is open to form a gas collecting chamber, the other side of the shell 310 is provided with a hollow opening, the edge of the hollow opening is provided with a surrounding edge to form an exhaust port 311, the end face of the exhaust port 311 is inclined compared to the horizontal plane, the inclination of the end face of the exhaust port 311 is set to 0°~10°, and the trigger member 320 is covered on the surrounding edge.
[0048] The shell 310 is made of sheet metal. Specifically, the shell 310 is columnar or rectangular. One side of the shell 310 is open, and a notch is punched out on the other side. A surrounding edge is welded at the notch to form an exhaust port 311. When the shell 310 is placed horizontally, the height of the remaining parts of the shell 310 is lower than the exhaust port 311 so that the airflow in the air collecting chamber can be smoothly collected to the exhaust port 311. At least two sides of the exhaust port 311 are close to the edge of the shell 310. In order to allow the airflow to be smoothly guided to the exhaust port 311, a slope can be set at the part around the notch.
[0049] Among them, Figure 6 As shown, a connecting plate 130 is provided on the current collecting member 100 , and the housing 310 is fixed to the connecting plate 130 by bolts.
[0050] In some embodiments, the trigger member 320 is hingedly connected to the surrounding edge, and a continuous guard edge is set on the edge of the trigger member 320. The guard edge and the body of the trigger member 320 form an air pocket for intercepting the airflow reaching the exhaust port 311, and when the trigger member 320 covers the exhaust port 311, the surrounding edge is on the inner side of the guard edge, and the guard edge cooperates with the inclined exhaust port 311 to prevent leakage of airflow.
[0051] In some embodiments, the second aeration structure 300 further includes a first gas injection end 330 , which is connected to the gas collecting cavity, and a side where the first gas injection end 330 is located is adjacent to or opposite to a side of the shell 310 having the exhaust port 311 .
[0052] In the embodiment of the present application, the side where the first gas injection end 330 is located is adjacent to the side of the shell 310 having the exhaust port 311, and the gas injection end is far away from the rotation center of the trigger member 320, which can effectively avoid airflow leakage, improve the aeration effect, and ensure that the frequency of each aeration is close.
[0053] In some other embodiments, the first gas injection end 330 is directly mounted below the shell 310 (ie, below the gas collecting cavity), which can also effectively avoid leakage of airflow, improve the aeration effect, and ensure that the frequency of each aeration is close.
[0054] like Fig. 9 As shown, the membrane column unit 200 includes two water collecting boxes 220, one end of the membrane filament 230 is fixed to one of the water collecting boxes 220, the other end of the membrane filament 230 is fixed to the other water collecting box 220, and the first aeration structure is arranged in one of the water collecting boxes 220. The water produced by the membrane filament 230 is collected by the water collecting box 220, and then transported to other pipelines by the water collecting box 220. In the embodiment of the present application, the water in the water collecting box 220 is collected to the confluence outlet 110 through the confluence inlet 120.
[0055] A first aeration structure is provided on one of the water collecting boxes 220 , and the membrane filaments 230 are cleaned by continuous small-amplitude aeration through the first aeration structure.
[0056] In some other embodiments, such as Fig.10 As shown, the first aeration structure includes an aeration plate and a second air injection end 221, the second air injection end 221 is arranged on the water collecting box 220, the aeration plate is arranged on one side of the water collecting box 220 for fixing the membrane filaments 230, and a plurality of aeration tubes 222 are arranged on the aeration plate. The aeration tubes 222 and the membrane filaments 230 are arranged in an alternate arrangement or in an array arrangement, so that each membrane filament 230 can be cleaned by the bubbles generated by the aeration tubes 222.
[0057] A diversion chamber is provided in the water collecting box 220, one end of which is connected to the aeration tube 222, and the other end of which is connected to the second gas injection end 221. The airflow of the second gas injection end 221 is collected by the diversion chamber and uniformly distributed to each aeration tube 222, and then small bubbles are uniformly generated by the aeration tube 222 to aerate and clean the membrane filaments 230.
[0058] In some embodiments, the water collecting box 220 has a docking port, which is detachably connected to the confluence inlet 120. Specifically, the docking port is configured to be tubular, and the confluence inlet 120 is also configured to be tubular. After the docking port and the confluence inlet 120 are docked, they are locked by a clamp, making disassembly and assembly convenient.
[0059] In some embodiments, Fig.11 As shown, an embodiment of the present application provides a membrane device, which includes a water collecting piece 510 and the above-mentioned membrane wire column structure. The water collecting piece 510 is a frame structure, and the membrane wire column structure is arranged in the frame of the water collecting piece 510. The water collecting piece 510 is used to collect and transport the water collected by the current collecting piece 100. In the embodiment of the present application, multiple groups of membrane wire column structures can be placed on a water collecting piece 510, and then multiple water collecting pieces 510 equipped with membrane wire column structures can be assembled into a membrane device.
[0060] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present application.
Claims
1. A membrane wire column structure, characterized in that: include A plurality of groups of membrane column units, each of which comprises a first aeration structure and a plurality of membrane filaments arranged in an array, wherein the first aeration structure is arranged close to an end of the membrane filament; Two current collecting pieces, each of which comprises a confluence outlet and at least two confluence inlets, wherein the confluence inlets are arranged in a circumferential array, one end of the membrane column unit is butted against the confluence inlet of one of the current collecting pieces, and the other end of the membrane column unit is butted against the confluence inlet of the other current collecting piece; The second aeration structure is provided on the collecting piece close to the first aeration structure, and the second aeration structure is located at the center of the collecting piece. The second aeration structure includes an air collecting chamber and a triggering piece. The triggering piece cover is provided on the exhaust port of the air collecting chamber, and the triggering piece can rotate, and the airflow gathered at the exhaust port can drive the triggering piece to flip open.
2. The membrane wire column structure according to claim 1, characterized in that: When the trigger member covers the exhaust port, the trigger member is inclined relative to a horizontal plane, and one end of the trigger member provided with a rotation center axis is lower than the other end of the trigger member.
3. The membrane wire column structure according to claim 2, characterized in that: The inclination of the trigger member is set to 0° to 10°, and the rotation range of the trigger member is set to 0° to 60°.
4. The membrane wire column structure according to claim 2, characterized in that: The second aeration structure also includes a shell, one side of the shell is open to form the air collecting chamber, the other side of the shell is provided with a hollow opening, the edge of the hollow opening is provided with a surrounding edge to form the exhaust port, the end face of the exhaust port is inclined compared to the horizontal plane, the inclination of the end face of the exhaust port is set to 0°~10°, and the trigger cover is arranged on the surrounding edge.
5. The membrane wire column structure according to claim 4, characterized in that: The trigger member is hingedly connected to the surrounding edge, and a continuous retaining edge is arranged on the edge of the trigger member. When the trigger member covers the exhaust port, the surrounding edge is located inside the retaining edge.
6. The membrane wire column structure according to claim 4, characterized in that: The second aeration structure further includes a first gas injection end, the first gas injection end is connected to the gas collecting cavity, and a side where the first gas injection end is located is adjacent to or opposite to a side of the shell having the exhaust port.
7. The membrane wire column structure according to any one of claims 1 to 6, characterized in that: The membrane column unit includes two water collecting boxes, one end of the membrane wire is fixed to one of the water collecting boxes, the other end of the membrane wire is fixed to the other water collecting box, and the first aeration structure is arranged in one of the water collecting boxes.
8. The membrane wire column structure according to claim 7, characterized in that: The first aeration structure includes an aeration plate and a second air injection end, the second air injection end is arranged on the water collecting box, the aeration plate is arranged on one side of the water collecting box for fixing the membrane filaments, a plurality of aeration tubes are arranged on the aeration plate, a diversion cavity is arranged in the water collecting box, one end of the diversion cavity is connected to the aeration tube, and the other end of the diversion cavity is connected to the second air injection end.
9. The membrane wire column structure according to claim 7, characterized in that: The water collecting box has a docking port, and the docking port is detachably connected to the confluence inlet.
10. A membrane device, characterized in that: include A water collecting member having a frame structure; Several groups of membrane wire column structures as described in any one of claims 1 to 9, wherein the membrane wire column structure array is arranged on the water collecting piece, and the confluence outlet is detachably connected to the water collecting piece.