Membrane filament column structure and membrane device
By designing multiple miniaturized membrane column units and flow collectors, combined with continuous and intermittent airflow cleaning, the problems of inconvenient replacement and poor aeration caused by high membrane fiber integration are solved, achieving high efficiency self-cleaning and anti-fouling capabilities, and ensuring water production efficiency.
Patent Information
- Application Number
- CN202423177457.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-20
AI Technical Summary
The existing membrane fibers have a high degree of integration, making them inconvenient to replace and resulting in unsatisfactory aeration effects, which affect their self-cleaning ability.
The structure adopts multiple miniaturized membrane column units and two flow collectors. Combined with the first and second aeration structures, it cleans the membrane fibers through continuous and intermittent airflow and uses the trigger to generate large bubbles for powerful cleaning.
It improves the cleaning efficiency and antifouling ability of the membrane fibers, ensures water production efficiency, and facilitates the replacement and maintenance of the membrane column unit.
Smart Images
Figure CN223615693U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of wastewater treatment technology, and in particular to a membrane fiber column structure and membrane device. Background Technology
[0002] With the development of the membrane industry, the application of membrane technology has attracted increasing attention. Submerged microfiltration or ultrafiltration wastewater treatment technologies are widely used in domestic sewage treatment, industrial wastewater treatment, and water supply treatment. However, during application, due to the high integration of membrane fibers, replacement is inconvenient, and the aeration effect is not ideal, which in turn affects the self-cleaning ability. Utility Model Content
[0003] This application aims to solve one of the aforementioned technical problems in the prior art. Therefore, embodiments of this application provide a membrane fiber column structure.
[0004] This application also provides a membrane device.
[0005] According to an embodiment of the first aspect of this application, a membrane column structure is provided, comprising multiple sets of membrane column units. Each membrane column unit includes a first aeration structure and a plurality of membrane filaments arranged in an array. The first aeration structure is disposed near the end of the membrane filaments. Two collectors are provided, each collector including a confluence outlet and at least two confluence inlets arranged in a circumferential array. One end of each membrane column unit is connected to the confluence inlet of one of the collectors, and the other end of each membrane column unit is connected to the confluence inlet of the other collector. A second aeration structure is provided near the collector of the first aeration structure. The second aeration structure is located at the center of the collector. The second aeration structure includes an air collection chamber and a trigger. The trigger covers the exhaust port of the air collection chamber and is rotatable. The airflow gathered at the exhaust port can cause the trigger to flip and open.
[0006] The aforementioned membrane column structure has at least the following beneficial effects: The membrane column structure of this application sets multiple sets of miniaturized membrane column units, which are then assembled by two flow collectors. In use, the air bubbles formed by the continuous airflow supplied to the first aeration structure of the membrane column unit can clean the membrane fibers of a single membrane column unit. Furthermore, by continuously supplying airflow to the air collection chamber of the second aeration structure, the airflow at the exhaust port gathers to a certain extent and generates sufficient buoyancy to drive the trigger to rotate. Since the exhaust port is located at the center of the flow collector, the airflow gathered at the exhaust port generates a large bubble when the trigger flips open, providing a powerful cleaning for all membrane column units. Compared to a membrane column structure with the same amount of membrane fibers, the membrane column structure of this application achieves small-scale self-cleaning through the first aeration structure and intermittent (pulse-type) large-scale cleaning through the second aeration structure, greatly improving the cleaning ability and anti-fouling ability of the membrane fibers and ensuring the efficiency of water production.
[0007] According to the membrane fiber column structure described in the first aspect of this application, when the trigger member covers the exhaust port, the trigger member is inclined relative to the horizontal plane, and one end of the trigger member with a rotation center axis is lower than the other end of the trigger member.
[0008] According to the membrane fiber column structure described in the first aspect embodiment of this application, the inclination of the trigger is set to 0° to 10°, and the rotatable range of the trigger is set to 0° to 60°.
[0009] According to the membrane fiber column structure described in the first aspect of this application, the second aeration structure further includes a shell, one side of which is open to form the air collection chamber, and the other side of which is provided with a perforation. The edge of the perforation is provided with a rim to form the exhaust port. The end face of the exhaust port is inclined relative to the horizontal plane, and the inclination of the end face of the exhaust port is set to 0° to 10°. The trigger element is covered by the rim.
[0010] According to the membrane fiber column structure described in the first aspect of this application, the trigger is hinged to the surrounding edge, and the edge of the trigger is provided with a continuous stop. When the trigger covers the exhaust port, the surrounding edge is located inside the stop.
[0011] According to the membrane fiber column structure described in the first aspect of this application, the second aeration structure further includes a first air injection end, which is connected to the air collection chamber, and the side where the first air injection end is located is adjacent to or opposite to the side of the shell having the exhaust port.
[0012] According to the membrane column structure described in the first aspect of this application, the membrane column unit includes two water collection boxes, one end of the membrane fiber is fixed to one of the water collection boxes, the other end of the membrane fiber is fixed to the other water collection box, and the first aeration structure is disposed in one of the water collection boxes.
[0013] According to the membrane fiber column structure described in the first aspect embodiment of this application, the first aeration structure includes an aeration disc and a second air injection end. The second air injection end is disposed in the water collection box. The aeration disc is disposed on one side of the water collection box for fixing the membrane fibers. A plurality of aeration pipes are disposed on the aeration disc. A diversion cavity is disposed in the water collection box. One end of the diversion cavity is connected to the aeration pipes, and the other end of the diversion cavity is connected to the second air injection end.
[0014] According to the membrane fiber column structure described in the first aspect of this application, the water collection box has a connection interface, which is detachably connected to the inlet.
[0015] According to an embodiment of the second aspect of this application, a membrane device is provided, including a water collection element with a frame structure; a plurality of membrane fiber pillar structures as described in the first aspect above, the membrane fiber pillar structures being arranged in an array on the water collection element, and the water collection outlet being detachably connected to the water collection element.
[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0017] The present application will be further described below with reference to the accompanying drawings and embodiments;
[0018] Figure 1 This is a schematic diagram of the membrane fiber column structure according to an embodiment of this application. Figure 1 ;
[0019] Figure 2 This is a schematic diagram of the membrane fiber column structure according to an embodiment of this application. Figure 2 ;
[0020] Figure 3 This is a schematic diagram of the membrane fiber column structure according to an embodiment of this application. Figure 3 ;
[0021] Figure 4 This is a schematic diagram of the connection between the flow collector and the water collection box in an embodiment of this application;
[0022] Figure 5 This is a schematic diagram of the connection of the second aeration structure of the flow collector in an embodiment of this application;
[0023] Figure 6 This is a schematic diagram of the current collector structure in an embodiment of this application;
[0024] Figure 7 This is a schematic diagram of the second aeration structure in an embodiment of this application. Figure 1 ;
[0025] Figure 8 This is a schematic diagram of the second aeration structure in an embodiment of this application. Figure 2 ;
[0026] Figure 9 This is a schematic diagram of the structure of the membrane column unit in an embodiment of this application;
[0027] Figure 10 This is a schematic diagram of the water collection box in an embodiment of this application;
[0028] Figure 11 This is a schematic diagram of the membrane device in an embodiment of this application.
[0029] Reference numerals: 100, 110, 120, 130, 200, 220, 221, 222, 230, 300, 310, 311, 320, 330, 510. Detailed Implementation
[0030] This section will describe in detail the specific embodiments of this application. Preferred embodiments of this application are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of this application, but they should not be construed as limiting the scope of protection of this application.
[0031] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0032] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0033] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.
[0034] The membrane fibers mentioned in this application refer to hollow fiber membranes, which are fibrous membranes with a self-supporting function. Hollow fiber membranes can be processed from raw materials such as polysulfone, dimethylacetamide, or PVDF (polyvinylidene fluoride) into hollow filaments, which are then coated with highly permeable polymers, giving them selective permeation characteristics. They are commonly used for wastewater filtration.
[0035] Reference Figures 1 to 3 This application provides a membrane fiber column structure, which includes a membrane column unit 200, a flow collector 100, and a second aeration structure 300.
[0036] Multiple sets of membrane column units 200 are provided. Each membrane column unit 200 includes several membrane filaments 230 and a first aeration structure. The first aeration structure is located near the end of the membrane filaments 230. By supplying 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, effectively improving the antifouling effect of the membrane filaments 230.
[0037] The system includes two collectors 100, which connect multiple membrane column units 200 into one unit. Each collector 100 includes a collection outlet 110 and at least two collection inlets 120. The collection inlets 120 are arranged in a circular array. One end of each membrane column unit 200 is connected to the collection inlet 120 of one of the collectors 100, and the other end of each membrane column unit 200 is connected to the collection inlet 120 of the other collector 100. Water collected by the membrane fibers 230 flows from the collection inlet 120 to the collection outlet 110, and is then transported to the corresponding pipeline through the collection outlet 110.
[0038] A second aeration structure 300 is disposed near the collector 100 of the first aeration structure. The second aeration structure 300 is located at the center of the collector 100. Since the confluence inlet 120 is arranged in a circular array, the corresponding mold column units are also arranged in a circular array. Therefore, the middle part of the collector 100 has a space for accommodating the second aeration structure 300. The second aeration structure 300 includes an air collection chamber and a trigger 320. The trigger 320 covers the exhaust port 311 of the air collection chamber. The trigger 320 can rotate, and the airflow gathered at the exhaust port 311 can drive the trigger 320 to flip and open.
[0039] In use, the air bubbles formed by the continuous airflow supplied to the first aeration structure of the membrane column unit 200 can achieve individual cleaning of the membrane fibers 230 of a single membrane column unit 200. Then, by continuously supplying airflow to the air collection chamber of the second aeration structure 300, the airflow at the exhaust port 311 can generate sufficient buoyancy to drive the trigger 320 to rotate after it gathers to a certain extent. Since the exhaust port 311 is located at the center of the water collection component, the airflow gathered at the exhaust port 311 generates a large bubble when the trigger 320 flips open, which achieves a powerful cleaning of all membrane column units 200. Compared with a membrane column structure with the same amount of membrane fibers 230, the membrane fiber column structure of this application achieves small-scale self-cleaning through the first aeration structure and intermittent (pulse-type) large-scale cleaning through the second aeration structure 300, which greatly improves the cleaning ability and anti-fouling ability of the membrane fibers 230 and ensures the efficiency of water production.
[0040] Compared with the prior art, the membrane fiber column structure of this application sets up multiple sets of miniaturized membrane column units 200, and then assembles the multiple sets of membrane column units 200 through two current collectors 100. If one of the membrane column units 200 is damaged, it is easy to replace and facilitates later maintenance.
[0041] like Figures 4 to 6 As shown in some embodiments provided in this application, the collector 100 is provided with four confluence inlets 120 and one confluence outlet 110. The confluence outlet 110 is located at the center of the circumferential array of the four confluence inlets 120, and the confluence outlet 110 and the confluence inlets 120 face opposite directions, so that there is space between the confluence inlets 120 for the placement of the second aeration structure 300. When the four sets of membrane column units 200 are assembled into one unit by the collector 100, the membrane column units 200 are not in a tightly attached state, which can make the aeration and cleaning more thorough and prevent clogging from affecting the water production effect.
[0042] like Figure 7 and Figure 8 As shown in this embodiment, when the trigger 320 covers the exhaust port 311, the trigger 320 is inclined relative to the horizontal plane, and one end of the trigger 320 with a rotation center shaft is lower than the other end of the trigger 320. When airflow is continuously and uninterruptedly introduced into the gas collection chamber, the airflow rises under the action of water buoyancy. As the highest point of the gas collection chamber, the exhaust port 311 can cause the trigger 320 to flip open when the airflow at the exhaust port 311 reaches a certain amount, thus realizing an intermittent exhaust state, that is, it can intermittently generate large bubbles to thoroughly clean the membrane column unit 200.
[0043] Setting the trigger 320 to be inclined relative to the horizontal plane has two advantages. First, it allows for smoother gas discharge after accumulation, and facilitates the trigger 320 to return to its original position as soon as possible after sufficient gas leaves the exhaust port 311 to continue the next aeration cycle. Second, it also prevents airflow leakage from the rotating connection of the trigger 320, which would affect the frequency and effectiveness of aeration.
[0044] By controlling the tilt angle of the trigger 320, the frequency at which the trigger 320 opens can be adjusted, and leakage during the airflow convergence process can also be reduced.
[0045] In some embodiments, the tilt angle of the trigger 320 is set to 0° to 10°. In the embodiments of this application, the tilt angle of the trigger 320 is set to between 5° and 10°. Specifically, the tilt angle of the trigger 320 can be 6°.
[0046] The rotatable range of the trigger 320 is set to 0°~60°. If the rotatable angle of the trigger 320 is set too large, a sudden increase in air volume may cause the trigger 320 to fail to automatically return to its original position after opening.
[0047] In some specific embodiments, the second aeration structure 300 further includes a housing 310, one side of which is open to form an air collection chamber, and the other side of which is provided with a perforation. The edge of the perforation is provided with a surrounding edge to form an exhaust port 311. The end face of the exhaust port 311 is inclined relative to the horizontal plane, and the inclination of the end face of the exhaust port 311 is set to 0° to 10°. The trigger 320 is covered by the surrounding edge.
[0048] The housing 310 is made of sheet metal. Specifically, the housing 310 is columnar or rectangular. One side of the housing 310 is open, and a notch is punched out on the other side. A rim is welded at the notch to form an exhaust port 311. When the housing 310 is placed horizontally, the height of the rest of the housing 310 is lower than that of the exhaust port 311 so that the airflow in the air collection chamber can be smoothly gathered to the exhaust port 311. At least two sides of the exhaust port 311 are close to the edge of the housing 310. In order to ensure that the airflow can be smoothly guided to the exhaust port 311, the part around the notch can be provided with a slope.
[0049] Among them, such as Figure 6 As shown, a connecting plate 130 is provided on the current collector 100, and the housing 310 is fixed to the connecting plate 130 by bolts.
[0050] In some embodiments, the trigger 320 is hinged to the surrounding edge, and the edge of the trigger 320 is provided with a continuous baffle. The baffle and the body of the trigger 320 form an air pocket to intercept the airflow reaching the exhaust port 311. When the trigger 320 covers the exhaust port 311, the surrounding edge is inside the baffle. The baffle, together with the inclined exhaust port 311, can prevent airflow leakage.
[0051] In some embodiments, the second aeration structure 300 further includes a first air injection end 330, which is connected to the air collection chamber, and the side where the first air injection end 330 is located is adjacent to or opposite to the side of the housing 310 that has the exhaust port 311.
[0052] In this embodiment, the side where the first air injection end 330 is located is adjacent to the side of the housing 310 with the exhaust port 311, and the air injection end is far away from the rotation center of the trigger 320, which can effectively prevent air leakage, improve the aeration effect, and ensure that the frequency of each aeration is close.
[0053] In other embodiments, the first air injection end 330 is directly mounted below the housing 310 (i.e. below the air collection chamber), which can also effectively prevent air leakage, improve the aeration effect, and ensure that the frequency of each aeration is close.
[0054] like Figure 9 As shown, the membrane column unit 200 includes two water collection boxes 220. One end of the membrane fiber 230 is fixed to one of the water collection boxes 220, and the other end of the membrane fiber 230 is fixed to the other water collection box 220. The first aeration structure is disposed in one of the water collection boxes 220. The water produced by the membrane fiber 230 is collected through the water collection box 220 and then transported to other pipelines through the water collection box 220. In this embodiment, the water in the water collection box 220 is collected into the outlet 110 through the inlet 120.
[0055] A first aeration structure is installed on one of the water collection boxes 220 to achieve continuous small-amplitude aeration to clean the membrane fiber 230.
[0056] In some other embodiments, such as Figure 10 As shown, the first aeration structure includes an aeration disc and a second air injection end 221. The second air injection end 221 is disposed in the water collection box 220. The aeration disc is disposed on one side of the water collection box 220 for fixing the membrane filaments 230. Several aeration pipes 222 are disposed on the aeration disc. The aeration pipes 222 and the membrane filaments 230 are arranged in a staggered manner or in an array, so that each membrane filament 230 can be cleaned by the bubbles generated by the aeration pipes 222.
[0057] The water collection box 220 is equipped with a diversion chamber. One end of the diversion chamber is connected to the aeration pipe 222, and the other end is connected to the second air injection end 221. The airflow from the second air injection end 221 is collected through the diversion chamber and distributed to each aeration pipe 222. Small bubbles are then generated through the aeration pipes 222 to aerate and clean the membrane fibers 230.
[0058] In some embodiments, the water collection box 220 has a connecting interface that is detachably connected to the manifold inlet 120. Specifically, the connecting interface is tubular, and the manifold inlet 120 is also tubular. After the connecting interface and the manifold inlet 120 are connected, they are locked together by clamps, making disassembly and assembly convenient.
[0059] In some embodiments, such as Figure 11 As shown, this application embodiment provides a membrane device, which includes a water collection element 510 and the aforementioned membrane fiber column structure. The water collection element 510 is a frame structure, and the membrane fiber column structure is disposed within the frame of the water collection element 510. The water collection element 510 is used to collect and transport the water collected by the collection element 100. In this application embodiment, multiple sets of membrane fiber column structures can be placed on one water collection element 510, and multiple water collection elements 510 with membrane fiber column structures installed can be assembled into a membrane device.
[0060] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.
Claims
1. A membrane fiber column structure, characterized in that: include Multiple sets of membrane column units, each membrane column unit including a first aeration structure and a plurality of membrane filaments arranged in an array, wherein the first aeration structure is disposed near the end of the membrane filaments; Two current collectors, each current collector including one current outlet and at least two current inlets, the current inlets being arranged in a circular array, one end of the membrane column unit connecting to the current inlet of one of the current collectors, and the other end of the membrane column unit connecting to the current inlet of the other current collector; The second aeration structure is provided near the flow collector of the first aeration structure. The second aeration structure is located at the center of the flow collector. The second aeration structure includes an air collection chamber and a trigger. The trigger covers the exhaust port of the air collection chamber. The trigger can rotate, and the airflow gathered at the exhaust port can drive the trigger to flip and open.
2. The membrane fiber column structure according to claim 1, characterized in that: When the trigger member covers the exhaust port, the trigger member is inclined relative to the horizontal plane, and one end of the trigger member with the rotation center axis is lower than the other end of the trigger member.
3. The membrane fiber column structure according to claim 2, characterized in that: The inclination of the trigger is set to 0° to 10°, and the rotatable range of the trigger is set to 0° to 60°.
4. The membrane fiber column structure according to claim 2, characterized in that: The second aeration structure further includes a shell, one side of which is open to form the air collection chamber, and the other side of which is provided with a perforation. The edge of the perforation is provided with a rim to form the exhaust port. The end face of the exhaust port is inclined relative to the horizontal plane, and the inclination of the end face of the exhaust port is set to 0° to 10°. The trigger element is covered by the rim.
5. The membrane fiber column structure according to claim 4, characterized in that: The trigger is hinged to the surrounding edge, and the edge of the trigger is provided with a continuous retaining edge. When the trigger covers the exhaust port, the surrounding edge is located inside the retaining edge.
6. The membrane fiber column structure according to claim 4, characterized in that: The second aeration structure further includes a first air injection end, which is connected to the air collection chamber, and the side where the first air injection end is located is adjacent to or opposite to the side of the shell that has the exhaust port.
7. The membrane fiber column structure according to any one of claims 1 to 6, characterized in that: The membrane column unit includes two water collection boxes. One end of the membrane fiber is fixed to one of the water collection boxes, and the other end of the membrane fiber is fixed to the other water collection box. The first aeration structure is disposed in one of the water collection boxes.
8. The membrane fiber column structure according to claim 7, characterized in that: The first aeration structure includes an aeration disc and a second air injection end. The second air injection end is disposed in the water collection box. The aeration disc is disposed on the side of the water collection box used to fix the membrane fibers. A plurality of aeration pipes are disposed on the aeration disc. A diversion cavity is disposed inside the water collection box. One end of the diversion cavity is connected to the aeration pipes, and the other end of the diversion cavity is connected to the second air injection end.
9. The membrane fiber column structure according to claim 7, characterized in that: The water collection box has a connection interface, which is detachably connected to the inlet.
10. A membrane device, characterized in that: include Water collection components with a frame structure; The membrane fiber column structure according to any one of claims 1 to 9, wherein the membrane fiber column structure is arranged in an array on the water collection component, and the water collection outlet is detachably connected to the water collection component.