Device for continuously compounding hollow fiber membranes into curtains

Abstract

The utility model provides a device for continuously compounding hollow fiber membranes into a curtain, which relates to the technical field of hollow fiber membranes and comprises a compounding device, a drafting device, a weaving device and a detection storage system which are connected in sequence, the compounding device is used for compounding and shaping the bottom membrane and the functional layer to form hollow fiber membrane filaments; the drafting device is used for drafting the hollow fiber membrane yarns to the yarn weaving device; the yarn weaving device is used for weaving the hollow fiber membrane yarns into a curtain so as to form a membrane curtain; and the detection storage system is used for storing, detecting and post-processing the film curtain. According to the utility model, the hollow fiber membrane filaments can be arranged, woven and detected on line, the hollow fiber membrane filaments can be woven into a curtain immediately after spinning, the hollow fiber membrane filaments can be arranged completely to realize a better anti-pollution effect, the purposes of single-filament sampling inspection and membrane full inspection can be realized, and the purposes of improving the membrane anti-pollution performance, improving the product percent of pass, reducing the production cost and the like are achieved. And full automation is achieved, and the production efficiency and the quality stability are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hollow fiber membranes, in particular to a device for continuously compounding hollow fiber membranes into a curtain. Background Art

[0002] The membrane bioreactor (MBR) is an efficient sewage treatment process that organically combines membrane separation technology and biological treatment technology. To improve the problem of low mechanical strength of homogeneous membrane materials, a separation functional layer is usually compounded on a high-strength bottom membrane. Currently, the technology of compounding PVDF (polyvinylidene fluoride) on substrates such as non-woven fabrics into flat membranes is relatively mature. Since the substrate is a flat surface, tools such as a doctor blade can be used for relatively uniform and stable compounding. However, the packing density of flat membrane modules is relatively low, severely restricting large-scale applications. Therefore, hollow fiber composite membranes are a more ideal choice. However, the technology of compounding on a circular hollow bottom membrane is more difficult, and problems such as eccentricity and unilateral material shortage are likely to occur. It is necessary to pay attention to the production situation in real time during the production process and make corresponding adjustments. Usually, the freshly spun membrane filaments are wound around a circular winding wheel. After winding a certain number of turns, they are cut, the wheel is changed manually, the membrane filaments are bundled into a bundle, and then the quality of the membrane filaments in the membrane bundle is detected to ensure timely discovery and solution of problems.

[0003] Hollow fiber membrane filaments will face problems such as fiber entanglement during the sewage treatment process. To solve this problem, the membrane filaments need to be neatly arranged. Patent CN112316730B discloses a method of arranging membrane filaments into a curtain. If the membrane filaments are to be arranged, the spun membrane filaments need to be continuously wound into a roll or a barrel first. The middle membrane filaments cannot be cut, and only continuous spinning can be carried out for several hours, and detection is carried out when changing the roll. This greatly affects the timeliness of the quality detection of spinning and is extremely likely to cause a large number of unqualified products. In addition, it is difficult to achieve material exchange between the inner and outer sides of the membrane filaments during the post-treatment process of the continuously wound membrane filaments, resulting in poor post-treatment effects and affecting product performance. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a device for continuously compounding hollow fiber membranes into a curtain, which solves the technical problems of untimely quality detection of spinning, easy large-scale production of unqualified products, and poor material exchange effect between the inner and outer sides of the membrane filaments existing in the prior art.

[0005] The device for continuously compounding hollow fiber membranes into a curtain provided by the utility model includes a compounding device, a stretching device, a wire braiding device, and a detection and storage system connected in sequence;

[0006] The compounding device is used for compounding and shaping the bottom membrane and the functional layer to form hollow fiber membrane filaments;

[0007] The drafting device is used to draft the hollow fiber membrane filaments to the wire braiding device;

[0008] The wire braiding device is used to braid the hollow fiber membrane filaments into a curtain to form a membrane curtain;

[0009] The detection and storage system is used to store, detect and post-process the membrane curtain.

[0010] Furthermore, the drafting device is provided with power rollers.

[0011] Furthermore, the power rollers are arranged in a triangular shape;

[0012] The number of the power rollers is not less than 3, and the diameter is not less than 10 mm.

[0013] Furthermore, the drafting device is provided with a tension mechanism;

[0014] The tension mechanism is used to keep the tension of the drafted hollow fiber membrane filaments during the braiding process.

[0015] Furthermore, the wire braiding device is provided with a wire laying mechanism;

[0016] The wire laying mechanism is used to continuously buckle the hollow fiber membrane filaments on the equally spaced wire laying buckles, and then braid the filaments through the wire laying buckles.

[0017] Furthermore, the wire braiding device is provided with a hole punching mechanism;

[0018] The hole punching mechanism is used to cut off the hollow fiber membrane filaments connected to the wire laying buckles, so as to open holes at both ends of the membrane curtain.

[0019] Furthermore, the hole punching mechanism includes at least one of an electric heating wire and a blade.

[0020] Furthermore, the detection and storage system is provided with a detection mechanism;

[0021] The detection mechanism is used to detect the composite integrity of the membrane filaments forming the curtain.

[0022] Furthermore, the detection mechanism includes a membrane filament air detection device.

[0023] Furthermore, the detection mechanism is interlocked with the composite device.

[0024] Compared with the prior art, the utility model has at least the following beneficial effects:

[0025] The device for continuously compounding and forming a hollow fiber membrane into a curtain provided by the present utility model enables the membrane filaments formed by continuous spinning and compounding molding to automatically carry out wire arrangement, weaving, and detection online; immediately after spinning, weaving is carried out, so that the membrane filaments can be completely arranged to achieve a better anti-pollution effect; for the woven membrane filaments, even if the two ends of the membrane sheet are cut off, the state of the woven membrane filaments can still be maintained; at the same time, the purpose of single-filament sampling inspection and full inspection of the membrane sheet can also be achieved. In short, with the coordinated cooperation of each component of the present utility model, the technical effects of improving the anti-pollution property of the membrane sheet, increasing the product qualification rate, and greatly improving the production efficiency and quality stability by full automation are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic structural diagram of the device for continuously compounding and forming a hollow fiber membrane into a curtain provided by an embodiment of the present utility model.

[0028] Reference numerals: 1 - compounding device; 2 - drafting device; 3 - tension mechanism; 4 - wire weaving device; 5 - wire laying buckle; 6 - first detection storage; 7 - second detection storage. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following will clearly and completely describe the technical solutions of the present utility model in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the protection scope of the present utility model.

[0030] The device for continuously compounding and forming a hollow fiber membrane into a curtain provided by the present utility model includes a compounding device, a drafting device, a wire weaving device, and a detection and storage system connected in sequence;

[0031] The compounding device is used to compound and shape the base film and the functional layer to form hollow fiber membrane filaments;

[0032] The drafting device is used to draft the hollow fiber membrane filaments to the wire weaving device;

[0033] The wire weaving device is used to weave the hollow fiber membrane filaments into a curtain to form a membrane curtain;

[0034] The detection and storage system is used to store, detect, and post-process the membrane curtain.

[0035] The device for continuously compounding and forming a curtain of hollow fiber membranes provided by the utility model enables the membrane filaments formed by continuous spinning and compounding to automatically carry out wire arrangement, weaving, and detection online; immediately after spinning, weaving can be carried out, so that the membrane filaments can be completely arranged to achieve a better anti-pollution effect; for the woven membrane filaments, even if the two ends of the membrane sheet are cut off, the state of the woven membrane filaments can still be maintained; at the same time, the purpose of single-filament sampling inspection and full inspection of the membrane sheet can also be achieved.

[0036] In summary, with the collaborative cooperation of various components, the utility model achieves the technical effects of improving the anti-pollution property of the membrane sheet, increasing the product qualification rate, and greatly improving the production efficiency and quality stability through full automation.

[0037] It should be noted that the bottom membrane includes but is not limited to at least one of a hollow crochet tube, a hollow woven tube, a hollow PES membrane, a hollow PVDF membrane, and a hollow polyolefin membrane; the functional layer includes but is not limited to at least one of a porous water-permeable layer and a non-porous air-permeable layer.

[0038] In a preferred embodiment, the drawing device can be provided with power rollers, and the power rollers can be arranged in a triangular pattern, which is more conducive to effectively drawing the hollow fiber membrane filaments to the wire weaving device; among them, the number of power rollers is not less than 3, and the diameter of the power rollers is not less than 10 mm.

[0039] The drawing device is used to continuously draw the compounded hollow fiber membrane filaments forward at a constant speed, so as to draw the hollow fiber membrane filaments into the wire weaving device.

[0040] In a preferred embodiment, the drawing device can also be provided with a tension mechanism, and the tension mechanism is used to keep a certain tension on the hollow fiber membrane filaments drawn at a constant speed during the weaving process, which is beneficial to improving the effect of weaving the membrane filaments into a curtain.

[0041] In a preferred embodiment, the wire weaving device can be provided with a wire laying mechanism. The wire guiding head that reciprocates in the wire laying mechanism can continuously buckle the hollow fiber membrane filaments on the equally spaced wire laying buttons, and then drive the wire laying buttons to move forward in parallel at a constant speed, and turn and run in a circle after the membrane filaments are woven.

[0042] In the wire weaving device, using the hollow fiber membrane filaments as the weft and supplemented with warp threads, the membrane filaments are woven into a curtain. The gap between the woven membrane filaments can be 0.1 mm - 2 mm, for example, it can be 0.1 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, but not limited to this, to form a membrane curtain.

[0043] In a preferred embodiment, the wire weaving device can also be provided with a hole opening mechanism; the hole opening mechanism can be an electric heating wire and / or a blade, which is used to cut off the membrane filaments connected to the wire laying buttons, so as to open holes at both ends of the membrane curtain.

[0044] After the membrane filaments are woven into a membrane curtain and then the two ends are opened, the mass transfer effect in the post-treatment can be effectively improved. The reason is that weaving into a membrane curtain ensures the distance between the membrane filaments, and the post-treatment can enter the inside of the membrane sheet from the gaps between the membrane filaments and the openings of the membrane filaments, and wash the multi-filament membrane completely and effectively.

[0045] In a preferred embodiment, the detection and storage system is provided with a detection mechanism; the detection mechanism is used to detect the composite integrity of the membrane filaments forming the curtain.

[0046] In a preferred embodiment, the detection mechanism includes, but is not limited to, a membrane filament air detection device. The detection process includes sealing the two ends of the membrane curtain with a membrane curtain fixed sealing structure, then applying air pressure to the inner side of the membrane filaments, detecting the membrane curtain in water, and the air detection pressure is not greater than the bubble point pressure of the membrane filaments.

[0047] In a preferred embodiment, the detection mechanism can be interlocked with the composite device, which is beneficial to timely discover quality problems existing in the production process and is beneficial to improving the product qualification rate.

[0048] In the present utility model, the detection and storage system can perform post-treatment on the membrane curtain. The post-treatment methods include: one end of the membrane curtain is open, and the other end is neatly stacked and then continuously or intermittently filled with water and pumped to wash.

[0049] A device for continuously compounding hollow fiber membranes into a curtain, the structure is shown in Figure 1 , including a composite device 1, a drawing device 2, a wire braiding device 4 connected in sequence, and a detection and storage system;

[0050] The composite device 1 is used to compound and shape the base film and the functional layer to form hollow fiber membrane filaments;

[0051] The drawing device 2 is used to draw the hollow fiber membrane filaments to the wire braiding device 4. The drawing device 2 adopts a power roller mechanism arranged in a triangular shape, and at the same time, the drawing device 2 is also provided with a tension mechanism 3;

[0052] The wire braiding device 4 weaves the hollow fiber membrane filaments into a curtain through a wire laying buckle 5 to form a membrane curtain;

[0053] The wire braiding device 4 is provided with a wire laying mechanism. The wire guiding head moving back and forth in the wire laying mechanism can continuously buckle the hollow fiber membrane filaments on the wire laying buckles 5 at equal intervals, and then drive the wire laying buckles 5 to move forward in parallel at a constant speed, thereby weaving the membrane filaments to form a membrane curtain;

[0054] The detection and storage system includes a first detection and storage 6 and a second detection and storage 7, and can be used to store, detect, and post-treat the membrane curtain.

[0055] A method using the device for continuously compounding hollow fiber membranes into a curtain according to any one of the above, including the following steps:

[0056] (a) The bottom film and the functional layer are compounded and shaped through a compounding device to obtain hollow fiber membrane filaments;

[0057] (b) The hollow fiber membrane filaments enter the wire braiding device through a stretching device, and thus the membrane filaments are continuously braided into a curtain to obtain a membrane curtain;

[0058] After the membrane filaments are braided, the membrane filaments connected to the wire laying buckle are cut by an opening mechanism, so that both ends of the membrane curtain are opened;

[0059] (c) The detection and storage system detects the composite integrity of the formed curtain membrane filaments in real time through a rapid air detection method, and can extract individual filaments to detect the roundness.

[0060] In summary, in the present utility model, the membrane sheet after being braided into a curtain has better anti-pollution performance during operation; through continuous spinning, braiding and detection, problems existing in the production process can be found in time, which is beneficial to timely solving product quality problems, and then effectively improving the product qualification rate; after the membrane filaments are braided, the two ends of the membrane curtain can be cut and opened, which can improve the post-treatment effect; the production process can be fully automated without manual intervention, which can greatly improve production efficiency and quality stability.

[0061] Embodiment 1

[0062] A device for continuously compounding hollow fiber membranes into a curtain, comprising a compounding device, a stretching device, a wire braiding device, and a detection and storage system connected in sequence;

[0063] The compounding device is used to compound and shape the bottom film and the functional layer to form hollow fiber membrane filaments;

[0064] The stretching device is used to stretch the hollow fiber membrane filaments to the wire braiding device;

[0065] The wire braiding device is used to braid the hollow fiber membrane filaments into a curtain to form a membrane curtain;

[0066] The detection and storage system is used to store, detect and post-treat the membrane curtain.

[0067] In this embodiment, the stretching device adopts power rollers arranged in a triangular pattern. The number of power rollers arranged is 3, and the diameter of the power rollers is 10 mm; the stretching device continuously stretches the hollow fiber membrane filaments forward at a constant speed, and the stretched hollow fiber membrane filaments enter the wire braiding device;

[0068] The wire braiding device is provided with a wire laying mechanism. The wire guiding head moving reciprocally in the wire laying mechanism continuously buckles the hollow fiber membrane filaments on the equally spaced wire laying buckles, and then drives the wire laying buckles to move forward in parallel at a constant speed, thereby braiding the membrane filaments to form a membrane curtain;

[0069] The detection and storage system is equipped with a film fiber air detection device, which can detect the composite integrity of the film curtain formed by film fibers. The detection process includes sealing both ends of the film curtain using a film curtain fixed sealing structure, then applying air pressure to the inner side of the film fibers, and finally detecting the film curtain by immersing it in water.

[0070] Meanwhile, the detection and storage system can perform post-treatment on the film curtain. The post-treatment methods include: leaving one end of the film curtain open, neatly stacking the other end, and then continuously or intermittently introducing water and pumping water for flushing.

[0071] Example 2

[0072] This example provides a device for continuously compounding hollow fiber membranes into a curtain. The difference from Example 1 is that the drawing device is also equipped with a tension mechanism to keep the drawn hollow fiber membrane filaments under tension during the weaving process.

[0073] The rest are the same as in Example 1.

[0074] Compared with Example 1, in this example, through the tension mechanism, the hollow fiber membrane filaments drawn at a constant speed can maintain a certain tension during the weaving process, which is beneficial to improving the effect of weaving the membrane filaments into a curtain.

[0075] Example 3

[0076] This example provides a device for continuously compounding hollow fiber membranes into a curtain. The difference from Example 1 is that the wire weaving device is also equipped with a hole-opening mechanism, and the hole-opening mechanism is an electric heating wire or a blade to cut off the membrane filaments connected to the wire laying buckle, so as to open holes at both ends of the film curtain.

[0077] The rest are the same as in Example 1.

[0078] Compared with Example 1, in this example, through the hole-opening mechanism, holes are cut and opened at both ends of the film curtain after the membrane filaments are woven, which is beneficial to improving the post-treatment effect of the film curtain (effectively realizing the mass exchange inside and outside the membrane filaments) and can completely and effectively perform flushing treatment on multiple membrane filaments.

[0079] Example 4

[0080] This example provides a device for continuously compounding hollow fiber membranes into a curtain. The difference from Example 1 is that the film fiber air detection device is interlocked with the compounding device.

[0081] The rest are the same as in Example 1.

[0082] Compared with Example 1, in this example, through the interlock between the film fiber air detection device and the compounding device, problems existing in production can be detected in time, effectively improving the product qualification rate.

[0083] Comparative Example 1

[0084] The difference between this comparative example and Example 1 is that no drawing device is set in this comparative example.

[0085] The rest are the same as those in Embodiment 1.

[0086] Compared with Embodiment 1, in this comparative example, the hollow fiber membrane filaments cannot be continuously drawn into the wire braiding device at a constant speed, resulting in the inability to braid into a curtain immediately after spinning, which reduces the production efficiency and quality stability.

[0087] Comparative Example 2

[0088] The difference between this comparative example and Embodiment 1 is that the detection and storage system is not provided in this comparative example;

[0089] The rest are the same as those in Embodiment 1.

[0090] Compared with Embodiment 1, in this comparative example, the composite integrity of the curtain-forming membrane filaments cannot be detected in real time, and the problems existing in the production cannot be found in time, which is extremely likely to lead to a batch of unqualified products.

[0091] In summary, the device for continuously compounding hollow fiber membranes into a curtain provided by the present utility model enables the membrane filaments formed by continuous spinning and compounding to automatically perform wire arranging, braiding, and detection online; the membrane filaments can be braided immediately after spinning, so that the membrane filaments can be completely arranged to achieve a better anti-pollution effect; for the braided membrane filaments, even if the two ends of the membrane sheet are cut off, the state of the braided membrane filaments can still be maintained; at the same time, the purpose of single-filament sampling inspection and full inspection of the membrane sheet can be achieved. In short, with the coordinated cooperation of each component, the present utility model achieves the technical effects of improving the anti-pollution property of the membrane sheet, increasing the product qualification rate, and greatly improving the production efficiency and quality stability through full automation.

[0092] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A device for continuously compounding hollow fiber membranes into curtains, characterized in that: It includes a compound device, a drafting device, a braiding device, and a detection and storage system connected in sequence; The composite device is used to composite and shape the base membrane and the functional layer to form hollow fiber membrane filaments; The drafting device is used to draft the hollow fiber membrane to the braiding device; The braiding device is used to braid the hollow fiber membrane into a curtain to form a membrane curtain; The inspection and storage system is used for storing, inspecting and post-processing the membrane curtain.

2. The device for continuously compounding hollow fiber membranes into curtains according to claim 1, characterized in that: The drafting device is provided with a power roller.

3. The device for continuously compounding hollow fiber membranes into curtains according to claim 2, characterized in that: The power rollers are arranged in a herringbone shape; The number of the power rollers is not less than 3 and the diameter is not less than 10 mm.

4. The device for continuously compounding hollow fiber membranes into curtains according to claim 1, characterized in that: The drafting device is provided with a tension mechanism; The tension mechanism is used to keep the tension of the stretched hollow fiber membrane filaments during the weaving process.

5. The device for continuously compounding hollow fiber membranes into curtains according to claim 1, characterized in that: The wire braiding device is provided with a wire laying mechanism; The wire laying mechanism is used to continuously buckle the hollow fiber membrane wires on the wire laying buckles with equal intervals, and then braid the wires through the wire laying buckles.

6. The device for continuously compounding hollow fiber membranes into curtains according to claim 5, characterized in that: The wire braiding device is provided with a hole opening mechanism; The hole-opening mechanism is used to cut off the hollow fiber membrane threads connected to the thread-laying buckles, thereby opening holes at both ends of the membrane curtain.

7. The device for continuously compounding hollow fiber membranes into curtains according to claim 6, characterized in that: The hole opening mechanism includes at least one of an electric heating wire and a blade.

8. The device for continuously compounding hollow fiber membranes into curtains according to any one of claims 1 to 7, characterized in that: The detection and storage system is provided with a detection mechanism; The detection mechanism is used to detect the composite integrity of the curtain film yarns.

9. The device for continuously compounding hollow fiber membranes into curtains according to claim 8, characterized in that: The detection mechanism includes a membrane wire gas detection device.

10. The device for continuously compounding hollow fiber membranes into curtains according to claim 9, characterized in that: The detection mechanism is interlocked with the composite device.

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