Filtering device for fabric wastewater recycling

Abstract

The application belongs to the technical field of textiles, and particularly relates to a filtering device for fabric wastewater circulation, which comprises a support frame, a filter arranged on the support frame and in the shape of a circular tube, an installation cavity arranged in the filter, an upper cover body and a lower cover body arranged at the top and bottom of the filter respectively, a first opening and a second opening arranged on the upper cover body and the lower cover body respectively, a filtering structure comprising an upper plate body, a lower plate body arranged in the filter at intervals, and a hollow fiber membrane filament arranged between the upper plate body and the lower plate body, an exchange pipe penetrating through the upper cover body and extending to the lower cover body, a plurality of penetration openings being arranged on the part of the exchange pipe in the filter, a third opening and a fourth opening being arranged at the top and bottom of the exchange pipe respectively, and a pipeline assembly arranged on the support frame and connected with the exchange pipe and the first opening and the second opening, and used for conveying wastewater and cleaning water, wherein the wastewater enters from the second opening, is guided out from the second opening after passing through the hollow fiber membrane filament.

Description

Technical Field

[0001] This application belongs to the field of textile technology, and in particular relates to a filtration device for recycling textile wastewater. Background Technology

[0002] During the fabric production and processing, wastewater containing fiber residue, dye residue and other suspended impurities is generated. In order to achieve efficient use of water resources, this type of wastewater usually needs to be treated and recycled. Filtration is a key link in wastewater recycling treatment. Its purpose is to remove impurities from the wastewater, avoid impurities from clogging or polluting subsequent production equipment or water circulation systems, and ensure the performance of the circulating water.

[0003] Currently, in existing filtration devices, impurities easily adhere to the surface of the filter media or clog the filter channels during the filtration process, preventing the device from achieving multiple continuous filtrations. To maintain the effectiveness of subsequent filtrations, the filter elements must be cleaned regularly. However, existing cleaning methods mostly rely on simple rinsing, backwashing, or manual cleaning. These methods are ineffective at removing stubborn impurities attached to the filter elements, resulting in poor cleaning effects and making it difficult to fully restore the filtration performance of the filter elements. At the same time, existing cleaning processes are inefficient and ineffective, increasing operating costs and labor intensity, necessitating improvements. Utility Model Content

[0004] The purpose of this application is to provide a filtration device for recycling textile wastewater, which can solve the above-mentioned problems.

[0005] The purpose of this application is to provide a filtration device for recycling textile wastewater, comprising: Support frame; The filter is mounted on a support frame and is in the shape of a cylindrical tube. It has an installation cavity inside and an upper cover and a lower cover at the top and bottom, respectively. The upper cover and the lower cover are respectively provided with a first opening and a second opening. The filter structure includes an upper plate and a lower plate spaced apart within the filter, and hollow fiber membrane filaments installed between the upper plate and the lower plate. The exchange tube passes through the upper cover and extends to the lower cover. The part of the tube located inside the filter has multiple infiltration ports, and the top and bottom are respectively provided with a third opening and a fourth opening. The pipeline assembly is mounted on a support frame and connected to the exchange pipe and the first and second openings for conveying wastewater and cleaning water. Wastewater enters through the second opening, passes through the hollow fiber membrane, and exits through the second opening. Water filtered by the hollow fiber membrane enters the exchange tube through the permeate and exits through the third opening.

[0006] The aforementioned textile wastewater recycling filtration device has four pipes connected to the first to fourth openings, arranged parallel to each other on a mounting frame. This allows for the separate transport of different fluids, including wastewater, cleaning water, and filtered water, ensuring both filtration and cleaning requirements are met. Furthermore, the independent arrangement of each pipe facilitates individual on / off control, allowing for separate adjustment of the cleaning water pipeline during cleaning operations. Impurities will not pass through the hollow fiber membrane fibers; only filtered water will pass through them. These hollow fiber membrane fibers are ultrafiltration membrane fibers.

[0007] Furthermore, the pipe assembly includes a first pipe body connected to a first opening, a second pipe body connected to a second opening, a third pipe body connected to a third opening, and a fourth pipe body connected to a fourth opening, and the four pipe bodies are arranged parallel to each other on the mounting bracket.

[0008] Regarding the filtration process, firstly, the textile wastewater is pumped through a high-pressure pump and enters the second chamber through the second opening in the second pipe. Then it enters the hollow fiber membrane. Driven by the pressure difference, the wastewater is filtered and enters the installation chamber through the hollow fiber membrane. The remaining water is discharged through the first opening to the first pipe and finally discharged. The filtered water in the installation chamber enters the exchange pipe through the permeate and finally enters the third pipe from the third opening at the top of the exchange pipe and is finally discharged. The overall filtration time can be adjusted according to requirements.

[0009] After multiple filtrations, impurities accumulate inside the hollow fiber membrane fibers, necessitating cleaning. The cleaning process involves several steps: First, the high-pressure pump is turned on, and wastewater is still pumped into the hollow fiber membrane fibers. At this point, the outlet valve connected to the exchange pipe is closed, allowing wastewater to drain only through the first opening. This flushes out some of the impurities deposited inside the hollow fiber membrane fibers, facilitating subsequent cleaning. Second, the cleaning pump is turned on, and clean water enters the exchange pipe through the fourth opening, then through the permeate port into the installation chamber, and finally into the hollow fiber membrane fibers. The valve at the third opening prevents water from draining through that opening, allowing it to exit only through the first opening. During this process, clean water enters the hollow fiber membrane fibers from the outside, further removing impurities adhering to the inner wall of the membrane fibers. Finally, the cleaning pump is turned on, and clean water enters the exchange pipe through the fourth opening, passes through the permeate port into the installation chamber, and ultimately enters the hollow fiber membrane fibers. Simultaneously, the valves at the first and third openings are closed, allowing water to exit only through the second opening, further cleaning the hollow fiber membrane fibers. The hollow fiber membrane fibers are cleaned through three cleaning steps, including multiple forward and reverse cleaning processes, to ensure their cleanliness and guarantee the subsequent filtration process.

[0010] Furthermore: a first chamber is formed between the upper cover and the upper plate, and the first chamber is connected to the first opening and one end of the hollow fiber membrane.

[0011] The first chamber formed between the upper cover and the upper plate provides a buffer transition space for the fluid. After the wastewater enters through the first opening, it can be evenly diffused and distributed in the chamber, ensuring that one end of each hollow fiber membrane filament can fully contact the fluid, avoiding some membrane filaments not being fully utilized, improving the overall filtration efficiency of the membrane filaments, and thus making the purification effect more uniform and comprehensive.

[0012] Furthermore, a second chamber is formed between the lower cover and the lower plate, and the second chamber is connected to the second opening and the other end of the hollow fiber membrane.

[0013] The second chamber formed between the lower cover and the lower plate corresponds to the first chamber, allowing the fluid passing through the hollow fiber membrane to collect evenly and then smoothly exit through the second opening. This avoids impurity accumulation caused by fluid stagnation at the membrane fiber ends and prevents blockage of the membrane fiber channels. The connection between the second chamber and the second opening allows for the rapid discharge of wastewater containing impurities that has not passed through the membrane fiber ultrafiltration, preventing impurities from accumulating inside the filtration device. During cleaning, the cleaning water carrying impurities passes through the membrane fiber and enters the second chamber, allowing for rapid discharge from the device, improving the cleaning effect and reducing the re-adhesion of impurities on the membrane fiber surface.

[0014] Furthermore, the permeable ports are strip-shaped, with multiple permeable ports parallel to each other and evenly distributed on the exchange tube, and the permeable ports connect the installation cavity and the interior of the exchange tube.

[0015] The permeate outlets are designed as multiple parallel strips, which increases the communication area between the installation chamber and the exchange tube. This allows water that has undergone ultrafiltration through the hollow fiber membrane to enter the exchange tube more quickly and evenly, improving the collection efficiency of filtered water and shortening the residence time of water in the installation chamber. The evenly distributed strip-shaped permeate outlets maintain a balanced water pressure around the exchange tube, preventing backflow of filtered water due to excessive local pressure. The parallel arrangement of the strip-shaped permeate outlets matches the distribution of the hollow fiber membrane fibers, ensuring that filtered water near each membrane fiber can promptly enter the exchange tube through the permeate outlets, thus improving the overall purification efficiency.

[0016] Furthermore, the filter is provided with limiting protrusions at both ends of the contact between the filter and the upper cover and the lower cover, and the upper cover and the lower cover are provided with matching extension protrusions. The limiting protrusions and the extension protrusions are also provided with sealing ring covers, and the two are connected by sealing ring covers.

[0017] The limiting protrusions at both ends of the filter and the extended protrusions of the upper and lower covers fit together, enabling precise positioning and installation of the upper and lower covers with the filter. This ensures the structural sealing of the installation cavity, prevents water leakage at the connection points, guarantees the purification effect, and avoids a decline in filtered water quality due to mixed flow. The installation of the sealing ring further enhances the sealing performance at the connection points, ensuring consistent purification results.

[0018] The beneficial effects of this application are: 1. The four pipes are respectively connected to the first to fourth openings and are arranged parallel to each other on the mounting frame, which can realize the separate transportation of different fluids such as wastewater, cleaning water and filtered water, so as to ensure both filtration and cleaning needs. 2. After multiple filtrations, impurities may accumulate within the hollow fiber membrane fibers. Therefore, cleaning is necessary. This is achieved through three cleaning steps, involving multiple forward and reverse cleaning cycles, to ensure the cleanliness of the hollow fiber membrane fibers and guarantee the smooth operation of subsequent filtration processes. 3. The limiting protrusions at both ends of the filter are matched with the extension protrusions of the upper and lower covers, which enables the positioning and installation of the upper and lower covers and the filter, ensuring the structural sealing of the installation cavity. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the filter of this utility model; Figure 3 This is a schematic diagram of the internal structure of the filter of this utility model.

[0020] The reference numerals in the figure are as follows: 100, support frame; 200, filter; 210, mounting cavity; 220, upper cover; 230, lower cover; 240, first opening; 250, second opening; 260, first chamber; 270, second chamber; 300, filter structure; 310, upper plate; 320, lower plate; 330, hollow fiber membrane filament; 400, exchange tube; 410, permeate port; 420, third opening; 430, fourth opening; 500, piping assembly; 510, first tube; 520, second tube; 530, third tube; 540, fourth tube; 600, sealing ring cover; 610, limiting protrusion; 620, extension protrusion. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0022] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0023] The filtration device for recycling textile wastewater provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0024] Example 1: like Figures 1 to 3 As shown in the figure, this application provides a filtration device for recycling textile wastewater, comprising: Support frame 100; The filter 200 is mounted on the support frame 100 and is in the shape of a round tube. It has an installation cavity 210 inside, and an upper cover 220 and a lower cover 230 are respectively provided at the top and bottom. The upper cover 220 and the lower cover 230 are respectively provided with a first opening 240 and a second opening 250. The filter structure 300 includes an upper plate 310 and a lower plate 320 spaced apart within the filter 200, and a hollow fiber membrane filament 330 installed between the upper plate 310 and the lower plate 320. The exchange tube 400 passes through the upper cover 220 and extends to the lower cover 230. Multiple infiltration ports 410 are provided in the part of the tube located inside the filter 200. A third opening 420 and a fourth opening 430 are provided at the top and bottom of the tube, respectively. The pipe assembly 500 is mounted on the support frame 100 and connected to the exchange pipe 400, the first opening 240, and the second opening 250, and is used to transport wastewater and cleaning water. Wastewater enters through the second opening 250, passes through the hollow fiber membrane 330, and is then discharged through the second opening 250. Water filtered by the hollow fiber membrane 330 enters the exchange pipe 400 through the permeate port 410 and is discharged through the third opening 420.

[0025] Furthermore, the pipe assembly 500 includes a first pipe body 510 connected to the first opening 240, a second pipe body 520 connected to the second opening 250, a third pipe body 530 connected to the third opening 420, and a fourth pipe body 540 connected to the fourth opening 430, and the four pipe bodies are arranged parallel to each other on the mounting bracket.

[0026] In some embodiments of this application, such as Figure 1 As shown, the above-mentioned textile wastewater recycling filtration device has four pipes connected to the first to fourth openings 430, respectively, and arranged parallel to each other on the mounting frame. This allows for the separate transport of different fluids such as wastewater, cleaning water, and filtered water, ensuring both filtration and cleaning requirements. Furthermore, the independent arrangement of each pipe facilitates individual control of its flow, allowing for separate adjustment of the cleaning water pipeline during cleaning operations. Impurities will not pass through the hollow fiber membrane 330; only filtered water will pass through it. Here, the hollow fiber membrane 330 is an ultrafiltration membrane.

[0027] Regarding the filtration process, firstly, the textile wastewater is pumped through a high-pressure pump and enters the second opening 250 through the second pipe 520 and then the second chamber 270. After that, it enters the hollow fiber membrane 330. Driven by the pressure difference, the wastewater is filtered and then enters the installation chamber 210 through the hollow fiber membrane 330. The remaining water is discharged through the first opening 240 to the first pipe 510 and finally discharged. The filtered water in the installation chamber 210 enters the exchange pipe 400 through the infiltration port 410 and finally enters the third pipe 530 from the third opening 420 at the top of the exchange pipe 400 and is finally discharged. The overall filtration time can be adjusted according to requirements.

[0028] After multiple filtrations, impurities accumulate inside the hollow fiber membrane filaments 330, necessitating cleaning. Cleaning involves several steps: First, the high-pressure pump is turned on, and wastewater is still being pumped into the hollow fiber membrane filaments 330. At this point, the outlet valve connected to the exchange pipe 400 is closed, allowing wastewater to drain only through the first opening 240. This flushes out some of the impurities deposited inside the hollow fiber membrane filaments 330, facilitating subsequent cleaning. Second, the cleaning pump is turned on, and clean water enters the exchange pipe 400 through the fourth opening 430, then through the permeate port 410 into the installation cavity 210, and finally into the hollow fiber membrane filaments 330. The valve at the third opening 420 prevents water from exiting through it, allowing it to exit only through the first opening 240. During this process, clean water enters the hollow fiber membrane 330 from the outside, further removing impurities adhering to its inner wall. In the final step, the cleaning pump is activated, and clean water enters the exchange pipe 400 through the fourth opening 430, passes through the permeate port 410 into the installation chamber 210, and finally enters the hollow fiber membrane 330. Simultaneously, the valves at the first opening 240 and the third opening 420 are closed, allowing water to exit only through the second opening 250, further cleaning the hollow fiber membrane 330. Through these three cleaning steps, and by repeatedly cleaning the hollow fiber membrane 330 in both forward and reverse directions, its cleanliness is ensured, guaranteeing the subsequent filtration process.

[0029] Example 2: This application provides a filter device for recycling textile wastewater. In addition to the above-mentioned technical features, the filter device for recycling textile wastewater in this application also includes the following technical features.

[0030] like Figure 3 As shown, a first chamber 260 is formed between the upper cover 220 and the upper plate 310, and the first chamber 260 is connected to the first opening 240 and one end of the hollow fiber membrane filament 330.

[0031] In this embodiment, the first chamber 260 formed between the upper cover 220 and the upper plate 310 provides a buffer transition space for the fluid. After the wastewater enters through the first opening 240, it can be evenly diffused and distributed in the chamber, ensuring that one end of each hollow fiber membrane filament 330 can fully contact the fluid, avoiding some membrane filaments from being underutilized, improving the overall filtration efficiency of the membrane filaments, and thus making the purification effect more uniform and comprehensive.

[0032] Furthermore, a second chamber 270 is formed between the lower cover and the lower plate 320, and the second chamber 270 is connected to the second opening 250 and the other end of the hollow fiber membrane.

[0033] The second chamber 270 formed between the lower cover 230 and the lower plate 320 corresponds to the first chamber 260, allowing the fluid passing through the hollow fiber membrane filaments 330 to be evenly collected and smoothly discharged from the second opening 250. This avoids impurity accumulation caused by fluid stagnation at the ends of the membrane filaments and prevents blockage of the membrane filament channels. The interconnected design of the second chamber 270 and the second opening 250 allows for the rapid discharge of wastewater containing impurities that has not passed through the membrane filaments for ultrafiltration, preventing impurities from accumulating inside the filtration device. During the cleaning process, the cleaning water carrying impurities passes through the membrane filaments and enters the second chamber 270, thus allowing for rapid discharge from the device, improving the cleaning effect and reducing the re-adhesion of impurities on the membrane filament surface.

[0034] Example 3: This application provides a filter device for recycling textile wastewater. In addition to the above-mentioned technical features, the filter device for recycling textile wastewater in this application also includes the following technical features.

[0035] like Figure 3 As shown, the permeable port 410 is strip-shaped, and multiple permeable ports 410 are parallel to each other and evenly distributed on the exchange tube 400. The permeable ports 410 connect the installation cavity 210 and the interior of the exchange tube 400.

[0036] In this embodiment, the permeate ports 410 are designed as strips and are evenly distributed in parallel. This increases the communication area between the mounting cavity 210 and the exchange tube 400, allowing water that has undergone ultrafiltration by the hollow fiber membrane filaments 330 to enter the exchange tube 400 more quickly and evenly. This improves the collection efficiency of the filtered water and shortens the residence time of the water in the mounting cavity 210. The evenly distributed strip-shaped permeate ports 410 maintain a balanced water flow pressure around the exchange tube 400, preventing backflow of filtered water due to excessive local pressure. The parallel arrangement of the strip-shaped permeate ports 410 matches the distribution of the hollow fiber membrane filaments 330, ensuring that filtered water near each membrane filament can enter the exchange tube 400 in a timely manner through the permeate ports 410, thus improving the overall purification efficiency.

[0037] Example 4: This application provides a filter device for recycling textile wastewater. In addition to the above-mentioned technical features, the filter device for recycling textile wastewater in this application also includes the following technical features.

[0038] like Figure 2 and Figure 3 As shown, the filter 200 is provided with limiting protrusions 610 at both ends of the contact with the upper cover 220 and the lower cover 230. The upper cover 220 and the lower cover 230 are provided with matching extension protrusions 620. The limiting protrusions 610 and the extension protrusions 620 are also provided with sealing ring covers 600, and the two are connected by sealing ring covers 600.

[0039] In this embodiment, the limiting protrusions 610 at both ends of the filter 200 are adapted to the extending protrusions 620 of the upper and lower covers 230, enabling the positioning and installation of the upper and lower covers 230 and the filter 200. This ensures the structural sealing of the mounting cavity 210, prevents water leakage at the connection, guarantees the purification effect, and avoids a decline in water quality after filtration due to mixed flow. The installation of the sealing ring cover 600 further enhances the sealing performance at the connection, ensuring the consistency of the purification effect.

[0040] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0041] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A filtration device for recycling textile wastewater, characterized in that: include: Support frame (100); The filter (200) is mounted on the support frame (100) and is in the shape of a round tube. It has an installation cavity (210) inside and an upper cover (220) and a lower cover (230) are respectively provided at the top and bottom. The upper cover (220) and the lower cover (230) are respectively provided with a first opening (240) and a second opening (250). The filter structure (300) includes an upper plate (310) and a lower plate (320) spaced apart within the filter (200), and hollow fiber membrane filaments (330) installed between the upper plate (310) and the lower plate (320); The exchange tube (400) passes through the upper cover (220) and extends to the lower cover (230). The part of the tube located inside the filter (200) has multiple infiltration ports (410), and the top and bottom are respectively provided with a third opening (420) and a fourth opening (430). The pipe assembly (500) is mounted on the support frame (100) and connected to the exchange pipe (400) and the first opening (240) and the second opening (250) for conveying wastewater and cleaning water; Wastewater enters through the second opening (250), passes through the hollow fiber membrane (330), and is then discharged through the second opening (250). Water filtered by the hollow fiber membrane (330) enters the exchange pipe (400) through the permeate (410) and is discharged through the third opening (420).

2. The filtration device for recycling textile wastewater according to claim 1, characterized in that: The pipe assembly (500) includes a first pipe body (510) connected to a first opening (240), a second pipe body (520) connected to a second opening (250), a third pipe body (530) connected to a third opening (420), and a fourth pipe body (540) connected to a fourth opening (430), and the four pipe bodies are arranged parallel to each other on the mounting bracket.

3. The filtration device for recycling textile wastewater according to claim 1, characterized in that: A first chamber (260) is formed between the upper cover (220) and the upper plate (310), and the first chamber (260) is connected to the first opening (240) and one end of the hollow fiber membrane filament (330).

4. The filtration device for recycling textile wastewater according to claim 1, characterized in that: A second chamber (270) is formed between the lower cover and the lower plate (320), and the second chamber (270) is connected to the second opening (250) and the other end of the hollow fiber membrane tear.

5. A filtration device for recycling textile wastewater according to claim 1, characterized in that: The permeable port (410) is strip-shaped, and multiple permeable ports (410) are parallel to each other and evenly distributed on the exchange tube (400), and the permeable port (410) connects the installation cavity (210) and the interior of the exchange tube (400).

6. A filtration device for recycling textile wastewater according to claim 1, characterized in that: Limiting protrusions (610) are provided at both ends of the filter (200) that contact the upper cover (220) and the lower cover (230). The upper cover (220) and the lower cover (230) are provided with matching extension protrusions (620). The limiting protrusions (610) and the extension protrusions (620) are also provided with sealing ring covers (600), and the two are connected by sealing ring covers.

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