Enhanced hollow fiber nanofiltration membrane

Abstract

The utility model relates to the technical field of hollow fiber nanofiltration membranes, and discloses an enhanced hollow fiber nanofiltration membrane which comprises a membrane tube, a treatment assembly used for pre-filtering conveyed liquid is arranged in the membrane tube, the treatment assembly comprises through grooves formed in the outer walls of the two ends of the membrane tube, and sliding grooves are formed in the inner walls of the two through grooves. A screen pipe is arranged in the through groove, sliding blocks are arranged on the two sides of the outer wall of the screen pipe, a positioning groove is formed in one end of the inner wall of the through groove, a locking groove is formed in the other end of the inner wall of the through groove, a magnet is arranged in the positioning groove, and a rack is arranged on the inner wall of the locking groove. Sealing plates are arranged in the two through grooves, magnetic plates are arranged at one ends of the sealing plates, inserting plates are arranged at the other ends of the sealing plates, and a plurality of clamping teeth are arranged on the outer walls of the inserting plates. According to the utility model, the screen pipes are arranged at the two ends of the membrane pipe, raw water is pretreated through the screen pipes before passing through the membrane pipe, impurities in the raw water are filtered, the probability of blockage of the filter membrane is reduced, the service life of the filter membrane is prolonged, and the filtering performance of the filter membrane is ensured.

Description

Technical Field

[0001] This utility model relates to the field of hollow fiber nanofiltration membrane technology, specifically to an enhanced hollow fiber nanofiltration membrane. Background Technology

[0002] Hollow fiber nanofiltration membranes are a novel separation membrane technology that combines the advantages of reverse osmosis and ultrafiltration. They offer excellent filtration performance and stable properties. Due to their high separation efficiency, good selectivity, mild operating conditions, and reusability, hollow fiber nanofiltration membranes have become an indispensable advanced technology material in modern industry and environmental protection. Their applications are wide-ranging, effectively solving various complex separation and purification problems, while also providing significant economic and environmental benefits.

[0003] In the application of hollow fiber nanofiltration membranes, liquids contain various impurities and particulate matter. When the liquid passes through the membrane for filtration, these impurities can cause membrane pore blockage and reduced flux, which in turn affects the membrane's service life and filtration effect. Furthermore, improper operation or excessive pressure during membrane unclogging can cause internal membrane fibers to break, severely reducing the membrane's filtration performance.

[0004] Therefore, we propose an enhanced hollow fiber nanofiltration membrane to address the aforementioned problems. Utility Model Content

[0005] The purpose of this invention is to provide an enhanced hollow fiber nanofiltration membrane to solve the problems mentioned in the background art, such as impurities in the liquid remaining inside the membrane when passing through it, causing blockage of the membrane pores, and the internal membrane fibers easily breaking due to improper filtration, thereby reducing the membrane's service life and filtration performance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an enhanced hollow fiber nanofiltration membrane, comprising a membrane tube, wherein a processing component for pre-filtration of the conveyed liquid is disposed inside the membrane tube, the processing component comprising through grooves disposed on the outer walls of both ends of the membrane tube, a sliding groove disposed on the inner wall of each of the two through grooves, a sieve tube disposed inside the through groove, sliders disposed on both sides of the outer wall of the sieve tube, a positioning groove disposed at one end of the inner wall of the through groove, a locking groove disposed at the other end, a magnet disposed inside the positioning groove, and a toothed rack disposed on the inner wall of the locking groove;

[0007] Both of the through slots are equipped with sealing plates. One end of the sealing plate is equipped with a magnetic plate, and the other end is equipped with an insert plate. The outer wall of the insert plate is equipped with multiple locking teeth.

[0008] Preferably, the two channels are distributed at both ends of the filter membrane inside the membrane tube, the screen tube is located in the channel, and the aperture of the screen tube is larger than that of the channel. One end of the slider is connected to the outer wall of the screen tube, and the other end extends into the channel and is slidably connected to the inner wall of the channel.

[0009] Preferably, the magnet is embedded in the inner wall of the positioning groove, one end of the sealing plate is located in the positioning groove and is slidably connected to the inner wall of the positioning groove, and the end of the sealing plate near the positioning groove is connected to the magnetic plate.

[0010] Preferably, the other end of the sealing plate is located inside the through groove, and the opening area of ​​the through groove is covered and sealed by sliding, and sealing strips are installed on both the inner wall of the through groove and the outer wall of the sealing plate.

[0011] Preferably, the insert plate and the sealing plate are located at the end away from the positioning groove, and the insert plate is inserted into the locking groove on the inner wall of the through groove by sliding the sealing plate.

[0012] Preferably, the plurality of the tooth arrays are distributed on the outer wall of the insert plate, and after the insert plate is embedded in the locking groove, they abut and mesh with the toothed rack on the inner wall of the locking groove. Both the positioning groove and the locking groove area are equipped with sealing gaskets.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By setting through grooves at both ends of the filter membrane inside the membrane tube, and embedding screen tubes inside the through grooves, the liquid passes through the screen tubes before passing through the filter membrane. The filter screen inside the screen tubes filters out particulate matter and other impurities in the liquid as it passes through, removing impurities from the liquid. This achieves pretreatment of the liquid, reducing the impurity content in the raw water and preventing impurities from entering the filter membrane with the raw water, thereby reducing the chance of membrane clogging, effectively preventing the production of blockages, and reducing the frequency of unclogging.

[0015] 2. The rotatable and telescopic sealing plate on the outer wall of the channel can cover and seal the channel after the screen tube is installed, and can also position and lock the screen tube installation position inside, thereby improving the sealing performance between the screen tube and the membrane tube after installation.

[0016] This invention installs screen tubes at both ends of the membrane tube, which pre-treat the raw water before it passes through the membrane tube, filter impurities in the raw water, reduce the chance of membrane clogging, improve the service life of the membrane, and ensure its filtration performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0018] Figure 2 This is a breakdown diagram of the internal structure of the through-slot of this utility model;

[0019] Figure 3This is a cross-sectional view of the through groove of this utility model;

[0020] Figure 4 This is an enlarged view of part A of this utility model.

[0021] In the diagram: 1. Membrane tube; 2. Through groove; 201. Slide groove; 3. Screen tube; 301. Sliding block; 4. Positioning groove; 401. Magnet; 5. Sealing plate; 6. Magnetic plate; 7. Insert plate; 701. Clamping tooth; 8. Locking groove; 9. Rack. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1: Please refer to Figures 1-4 An enhanced hollow fiber nanofiltration membrane includes a membrane tube 1. The membrane tube 1 contains a processing component for pre-filtration of the transported liquid. The processing component includes through grooves 2 on the outer walls at both ends of the membrane tube 1 for positioning a screen tube 3. Each through groove 2 has a sliding groove 201 on its inner wall. A screen tube 3 is installed inside the through groove 2, and a filter screen is installed inside the screen tube 3. The screen tube 3 can be installed into the through groove 2 by sliding a slider 301 within the sliding groove 201. Since the screen tube 3 is installed at both ends of the filter membrane inside the membrane tube 1, the liquid first passes through the screen tube 3 before entering the filter membrane. The screen inside the screen tube 3 filters out particulate matter and other impurities in the liquid as it passes through, reducing the impurity content and preventing impurities from entering the filter membrane along with the liquid. Slider 301s are provided on both sides of the outer wall of the screen tube 3.

[0024] In this embodiment: by installing screen tubes 3 at both ends of the filter membrane inside the membrane tube 1, the liquid will pass through the screen tubes 3 after entering the membrane tube 1. The liquid is pretreated by the screen tubes 3, and the impurities in the liquid are initially filtered, so that the impurity content in the liquid entering the filter membrane is reduced, which effectively reduces the chance of filter membrane clogging and improves the service life of the filter membrane, ensuring the performance of the filter membrane.

[0025] Example 2: This example is an improvement on Example 1. For details, please refer to [link / reference]. Figures 1-4One end of the inner wall of the through groove 2 is provided with a positioning groove 4 for receiving one end of the sealing plate 5 and positioning the angle of the sealing plate 5 when it slides. The other end is provided with a locking groove 8. A magnet 401 is provided inside the positioning groove 4. The magnet 401 can magnetically attract the sealing plate 5 with the magnetic plate 6 at one end of the sealing plate 5 after the sealing plate 5 extends out of the positioning groove 4, thereby supporting and positioning the sealing plate 5 at the extended position. A toothed rack 9 is provided on the inner wall of the locking groove 8. Both through grooves 2 are provided with sealing plates 5 to cover and seal the through grooves 2, thereby improving the sealing performance of the through grooves 2. A magnetic plate 6 is provided at one end of the sealing plate 5, and an insert plate 7 is provided at the other end. When the sealing plate 5 rotates to cover the through groove 2, the insert plate 7 at the other end is inserted into the locking groove 8 on the inner wall of the through groove 2. Multiple locking teeth 701 are provided on the outer wall of the insert plate 7. The two through grooves 2 are distributed at both ends of the filter membrane inside the membrane tube 1, and the screen tube 3 is located inside the through groove 2. The aperture of the screen tube 3 is larger than that of the through groove 2. One end of the slider 301 is connected to the outer wall of the screen tube 3, and the other end extends into the slide groove 201 and is slidably connected to the inner wall of the slide groove 201. The magnet 401 is embedded in the inner wall of the positioning groove 4. One end of the sealing plate 5 is located in the positioning groove 4 and is slidably connected to the inner wall of the positioning groove 4. The end of the sealing plate 5 near the positioning groove 4 is connected to the magnet 6. The other end of the sealing plate 5 is located in the through groove 2 and covers and seals the opening area of ​​the through groove 2 by sliding. Sealing strips are installed on both the inner wall of the through groove 2 and the outer wall of the sealing plate 5. The insert plate 7 is located away from the positioning groove 4 from the sealing plate 5. The insert plate 7 is inserted into the locking groove 8 on the inner wall of the through groove 2 by sliding the sealing plate 5. Multiple teeth 701 are arrayed on the outer wall of the insert plate 7. After the insert plate 7 is embedded in the locking groove 8, it abuts and meshes with the rack 9 on the inner wall of the locking groove 8. Sealing gaskets are installed in both the positioning groove 4 and the locking groove 8 area.

[0026] In this embodiment: after the screen tube 3 is installed, the sealing plate 5 is pulled to slide out of the positioning groove 4 and cover and seal the through groove 2. At the same time, the insert plate 7 at the other end is inserted into the locking groove 8 on the inner wall of the through groove 2. The locking teeth 701 on the outer wall of the insert plate 7 abut and mesh with the rack 9 on the inner wall of the locking groove 8, thereby improving the sealing performance of the through groove 2 after it is closed.

[0027] Working principle: In use, the slide block 301 on the outer wall of the screen tube 3 first guides the screen tube 3 to slide into the through groove 201 on the inner wall of the through groove 2, thereby installing the screen tube 3 into the through groove 2. Then, the sealing plate 5 is pulled out from the positioning groove 4 to cover and seal the through groove 2. At the same time, the insert plate 7 at the other end of the sealing plate 5 is inserted into the locking groove 8 and engages with the toothed tooth 701 and the toothed tooth 9 on the inner wall of the locking groove 8 to seal the through groove 2. When the liquid enters the membrane tube 1, the liquid will first pass through the screen tube 3. The screen tube 3 pre-treats the impurities in the liquid and performs preliminary filtration to reduce the impurity content in the liquid. The liquid after passing through the screen tube 3 then enters the filter membrane.

[0028] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An enhanced hollow fiber nanofiltration membrane, comprising a membrane tube (1), wherein the membrane tube (1) is provided with a processing component for pre-filtration of the conveyed liquid, characterized in that: The processing assembly includes through grooves (2) on the outer walls of both ends of the membrane tube (1), and sliding grooves (201) on the inner walls of both through grooves (2). A screen tube (3) is provided inside the through groove (2), and sliders (301) are provided on both sides of the outer wall of the screen tube (3). A positioning groove (4) is provided at one end of the inner wall of the through groove (2), and a locking groove (8) is provided at the other end. A magnet (401) is provided inside the positioning groove (4), and a rack (9) is provided on the inner wall of the locking groove (8). Both of the through slots (2) are provided with sealing plates (5). One end of the sealing plate (5) is provided with a magnetic plate (6) and the other end is provided with an insert plate (7). The outer wall of the insert plate (7) is provided with multiple locking teeth (701).

2. The enhanced hollow fiber nanofiltration membrane according to claim 1, characterized in that: Two through grooves (2) are distributed at both ends of the filter membrane inside the membrane tube (1). The sieve tube (3) is located inside the through groove (2), and the aperture of the sieve tube (3) is larger than that of the through groove (2). One end of the slider (301) is connected to the outer wall of the sieve tube (3), and the other end extends into the slide groove (201) and slides in connection with the inner wall of the slide groove (201).

3. The enhanced hollow fiber nanofiltration membrane according to claim 2, characterized in that: The magnet (401) is embedded in the inner wall of the positioning groove (4), one end of the sealing plate (5) is located in the positioning groove (4) and is slidably connected to the inner wall of the positioning groove (4), and the end of the sealing plate (5) near the positioning groove (4) is connected to the magnetic plate (6).

4. The enhanced hollow fiber nanofiltration membrane according to claim 1, characterized in that: The other end of the sealing plate (5) is located inside the through groove (2) and covers and seals the opening area of ​​the through groove (2) by sliding. Both the inner wall of the through groove (2) and the outer wall of the sealing plate (5) are equipped with sealing strips.

5. The enhanced hollow fiber nanofiltration membrane according to claim 1, characterized in that: The insert plate (7) and the sealing plate (5) are located away from the positioning groove (4), and the insert plate (7) is inserted into the locking groove (8) on the inner wall of the through groove (2) by sliding the sealing plate (5).

6. The enhanced hollow fiber nanofiltration membrane according to claim 1, characterized in that: Multiple of the aforementioned teeth (701) are arranged in an array on the outer wall of the insert plate (7). After the insert plate (7) is embedded in the locking groove (8), it abuts and meshes with the rack (9) on the inner wall of the locking groove (8). Both the positioning groove (4) and the locking groove (8) area are equipped with sealing gaskets.

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