A method and device for making hollow fiber membrane modules with evenly distributed membrane filaments
A uniformly distributed, fiber membrane technology, applied in the direction of semi-permeable membrane separation, chemical instruments and methods, membrane technology, etc., can solve problems such as reduced efficiency, membrane filament adhesion, and complicated manufacturing process of membrane modules, so as to increase filtration performance , The effect of simple and efficient preparation
Active Publication Date: 2022-04-19
BEIJING UNIV OF TECH
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Problems solved by technology
[0008] This comparative example is a self-made PVDF hollow fiber membrane filament with self-support. The membrane filament is sealed before casting. ), using epoxy resin as a binder, the hollow fiber membranes and the outer structural parts are centrifuged or statically cast and bonded together, and cut after being completely cured, so that the distribution of each bundle of fibers in the membrane module is better, However, there is serious adhesion between each bundle of membrane filaments, which seriously affects the filtration performance of the membrane module.
The number of petals in the mold should not be too many, otherwise the manufacturing process of the membrane module will be more complicated and the efficiency will be reduced; the number of petals in the mold should not be too small, otherwise the number of membrane filaments per bundle will be more, and the adhesion between membrane filaments will be more serious
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Embodiment 1
[0033] This embodiment is a self-made PVDF hollow fiber membrane with self-support, and the membrane filaments are end-capped before casting, such as figure 1 , place the adhesive tape on two rollers 2 with a fixed distance, lead out the adhesive tape 10 through the pressing rod 4 and 5, and fix it on the rolling rod 8, the distance of the tape on the rolling rod is determined, and the rolling rod passes through the belt and the drive shaft 11 Connected, the drive shaft is powered by the power source 9; according to the determined membrane spacing, the hollow fiber membranes 7 are fixed on the tape in parallel distribution through the scale bar; start the power source, and distribute the membranes While using the winding rod to take up the membrane wire, stop when the diameter of the winding rod is equal to the size of the module. Then the film filaments are evenly arranged on the winding rod ( figure 2 ) are placed in the membrane shell of the membrane module, centrifuged o...
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The invention discloses a method and a device for manufacturing hollow fiber membrane modules with evenly distributed membrane filaments, belonging to the technical field of hollow fiber membrane module preparation. It includes distributing the membrane filaments evenly on the adhesive tape, and making a membrane module with evenly distributed membrane filaments by winding the adhesive tape; the realization device includes an operation table with a scale bar, a roller and a rod that can fix the tape, a scale bar, a press The rod, the pressing rod, the winding rod and the power source are connected by a drive shaft and a belt between the power source and the winding rod. The rollers can be used to place the adhesive tape and are fixed on the rod, and the distance between the two rollers on the rod can be adjusted. In the hollow fiber membrane module manufactured by this method, the membrane filaments are evenly distributed, the membrane flux is evenly distributed, and the efficiency of the membrane module is improved.
Description
technical field [0001] The invention relates to a method and a device for evenly distributing and arranging the membrane filaments of a hollow fiber membrane module, in particular to a method and a device for uniformly distributing and arranging the membrane filaments by using an adhesive tape, and belongs to the technical field of hollow fiber membrane module preparation. Background technique [0002] Membrane module is the core of membrane technology application. In particular, hollow fiber membrane modules are widely used in various fields of membrane separation due to their relatively simple preparation technology, no need for supports, high packing density, and high efficiency. The ideal hollow fiber membrane module is mostly arranged in parallel with the membrane filaments along the module axis, but in the process of actual production of membrane modules, there has always been the problem of uneven arrangement and distribution of hollow fiber membrane filaments, which ...
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IPC IPC(8): B01D63/02
CPCB01D63/021
Inventor 彭跃莲侯春光庞志广
Owner BEIJING UNIV OF TECH