Hollow fiber membrane subassembly fabrication and membrane piercing method

Abstract

The application discloses a kind of hollow fiber membrane small subassembly production and membrane penetration method, it is related to the field of hollow fiber membrane wire, including membrane outer shell, support partition, hollow fiber membrane wire, solution tank, when producing component, including the following steps: drilling corresponding number of positioning holes on membrane outer shell;Support partition is settled in the same side of outer shell;Guiding rod is inserted into positioning hole;Hollow fiber membrane wire is sleeved on the outside of guiding rod, then hollow fiber membrane wire is slid on guiding rod to realize quick membrane penetration;Support partition is sequentially moved in corresponding position;After fixing position, guiding rod is extracted, and epoxy resin is injected at both ends of membrane outer shell, hollow fiber membrane is fixed, and solution tank is installed at both ends of membrane outer shell;Hollow fiber membrane wire is guided by guiding rod inserted into positioning hole in limiting device, the rigidity of hollow fiber membrane wire can be enhanced, the bending condition of hollow fiber membrane wire when penetrating is avoided, the difficulty of penetration is reduced, and the penetration efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of hollow fiber membrane filaments, in particular to a method for manufacturing and threading hollow fiber membrane subassembly. BACKGROUND

[0002] Air temperature and air humidity are two important factors of air quality. Proper air humidity can reduce static electricity, reduce the speed of chemical or biochemical reactions, and indoor pollutants are affected by air relative humidity. For example, if the humidity is too high, the rate of formaldehyde, benzene and other gases released by indoor building materials and furniture will increase, which will adversely affect people. At present, membrane method is widely used in air dehumidification method because of the high selective permeability and high packing density of hollow fiber membrane filaments.

[0003] However, the key part of the hollow fiber membrane filament assembly manufacturing is threading, because the number of hollow fiber membrane filaments is too large, and the hollow fiber membrane filament itself has a small inner diameter and is long and slender, and has insufficient rigidity, it is difficult to ensure that the hollow fiber membrane filament does not bend when passing through the shell, which increases the time and processing cost of the entire assembly manufacturing. SUMMARY

[0004] The present application aims to provide a method for manufacturing and threading hollow fiber membrane subassembly to solve the problems mentioned in the background.

[0005] A method for manufacturing and threading hollow fiber membrane subassembly, comprising a membrane shell, a support partition, a hollow fiber membrane filament, and a solution tank, comprising the following steps during assembly:

[0006] S1, drilling corresponding number of positioning holes on the membrane shell;

[0007] S2, making four support partitions and drilling corresponding positioning holes with the shell to ensure that the hollow fiber membrane filament can pass through normally; and placing the support partitions on the same side of the shell;

[0008] S3, inserting the guide rod in the limiting device into the positioning hole;

[0009] S4, selecting a non-damaged hollow fiber membrane filament, sleeving the hollow fiber membrane filament outside the guide rod, keeping the hollow fiber membrane filament in a flexible state to avoid bending, and then sliding the hollow fiber membrane filament on the guide rod; thereby guiding the hollow fiber membrane filament to pass through the positioning hole to realize rapid threading;

[0010] S5, fixing the end face of the shell on one side, and moving the support partitions in corresponding positions in sequence respectively;

[0011] S6, after fixing the position, withdrawing the guide rod and injecting epoxy resin at both ends of the membrane shell to fix the hollow fiber membrane filament and cut the filament;

[0012] S7, the membrane shell body is connected with solution tanks at two ends respectively to complete single component manufacturing.

[0013] Preferably, the membrane shell body is made of an epoxy resin plate; the support partition plate is made of a steel plate; and the hollow fiber membrane wire is selected to be smooth and without recess.

[0014] Preferably, the punching interval of the epoxy resin plate is greater than or equal to 3.5 mm, and the punching size is greater than the membrane hole diameter.

[0015] Preferably, the hollow fiber membrane wire is distributed in a forked row, and the hollow fiber membrane wire is pulled by a guide rod.

[0016] Preferably, the four support partition plates are sequentially positioned and fixed to ensure that the partition plate intervals are equal.

[0017] Preferably, the limiting device comprises a fixed plate and a guide rod, and the fixed plate is fixedly connected with a plurality of guide rods corresponding to the positioning holes.

[0018] The advantages of the present application are that:

[0019] The guide rod in the limiting device is inserted into the positioning hole to guide the hollow fiber membrane wire, which can enhance the rigidity of the hollow fiber membrane wire, avoid the bending of the hollow fiber membrane wire when penetrating the membrane, reduce the difficulty of penetrating the membrane, and improve the efficiency of penetrating the membrane.

[0020] The epoxy resin plate is used to make the membrane shell body. The shrinkage of the epoxy resin during curing is low, and the internal stress generated is small, which also helps to improve the adhesion strength. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 It is a schematic diagram of the overall structure of the hollow fiber membrane small component;

[0022] Fig. 2 It is a partial structure schematic diagram of the hollow fiber membrane small component when the guide rod is inserted into the positioning hole;

[0023] Fig. 3 It is a structure schematic diagram of the membrane shell body and the support partition plate.

[0024] In the figure: 1, membrane shell body; 2, support partition plate; 3, hollow fiber membrane wire; 4, solution tank; 5, limiting device; 51, fixed plate; 52, guide rod; 6, positioning hole. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, purposes and effects of the invention easy to understand, the invention will be further described below in conjunction with the specific embodiments.

[0026] For example, Figs. 1 to 3As shown, a hollow fiber membrane subassembly manufacturing and membrane penetrating method, including a membrane shell 1, a support partition plate 2, a hollow fiber membrane wire 3, a solution tank 4, when manufacturing the assembly, including the following steps:

[0027] Step one, drill corresponding number of positioning holes 6 on the membrane shell 1.

[0028] Step two, make four support partition plates 2 and drill corresponding positioning holes 6 with the shell to ensure that the hollow fiber membrane wire 3 can pass through normally. And place the support partition plate 2 on the same side of the shell.

[0029] Step three, insert the guide rod 52 in the limiting device 5 into the positioning hole 6.

[0030] Step four, select the hollow fiber membrane wire 3 without damage, put the hollow fiber membrane wire 3 outside the guide rod 52, keep the hollow fiber membrane wire 3 in a flexible state to avoid bending, then slide the hollow fiber membrane wire 3 on the guide rod 52. Thus, guide the hollow fiber membrane wire 3 to pass through the positioning hole 6 to realize rapid membrane penetration.

[0031] Step five, fix the end face of the shell, move the support partition plate 2 in the corresponding position in turn.

[0032] Step six, after fixing the position of the support partition plate 2, pull out the guide rod 52 through the fixed plate 51 and inject epoxy resin into both ends of the membrane shell 1, fix the hollow fiber membrane wire 3 and the membrane shell 1 together, and cut the wire. Improve the flatness of the cross section. Reduce the adhesion between the hollow fiber membrane wires 3.

[0033] Step seven, connect the solution tank 4 to both ends of the membrane shell 1 to complete the manufacturing of a single assembly.

[0034] In this embodiment, the membrane shell 1 is made of epoxy resin plate, the size of the shell is 1m(long)×0.2m(width)×0.2m(height), the existence of the inherent polar hydroxyl group and ether bond in the molecular chain of epoxy resin makes it have high adhesion to various substances. The shrinkage of epoxy resin during curing is low, and the internal stress generated is small, which also helps to improve the adhesion strength. The reaction of epoxy resin and the curing agent used is carried out through direct addition reaction or ring-opening polymerization reaction of epoxy groups in resin molecules, without water or other volatile by-products. The cured epoxy resin system has excellent mechanical properties. The cured epoxy resin system has excellent alkali resistance, acid resistance and solvent resistance. Proper selection of epoxy resin and curing agent can make it have special chemical stability. The support partition plate 2 is made of steel plate to prevent corrosion. The hollow fiber membrane wire 3 is selected to have a smooth surface without depression.

[0035] In the embodiment, the punching interval of the epoxy plate is greater than or equal to 3.5 mm, and the punching size is greater than the film hole diameter. A certain tolerance is ensured.

[0036] In the embodiment, according to the film interval and the margin, and the convenience in actual application, the four supporting partitions 2 are sequentially arranged and positioned and fixed, and the interval between the adjacent supporting partitions 2 is 0.2 m.

[0037] In the embodiment, the hollow fiber membrane filaments 3 are distributed in a forked manner, and the hollow fiber membrane filaments 3 are pulled through the guide rods 52.

[0038] In the embodiment, the guide rods 52 inside the hollow fiber membrane filaments 3 are extracted, epoxy resin is injected into both ends of the positioned outer shell body to solidify, so as to fix the hollow fiber membrane filaments 3 and the outer shell body together, and the excess hollow fiber membrane filaments 3 are cut off.

[0039] In the embodiment, the solution tank 4 is arranged at both ends of the membrane outer shell body 1 to provide solution.

[0040] In the embodiment, the limiting device 5 includes a fixed plate 51 and a guide rod 52, and the fixed plate 51 is fixedly connected with a plurality of guide rods 52 which are concentrically corresponding to the positioning holes 6.

[0041] As known from common knowledge, the invention can be realized by other embodiments without departing from the spirit or essential characteristics of the invention. Therefore, the above disclosed embodiments are only examples, and are not the only ones. All changes within the scope of the invention or within the equivalent scope of the invention are included in the invention.

Claims

1. A method for fabricating and inserting a hollow fiber membrane component, characterized in that, The assembly includes a membrane housing (1), a supporting partition (2), hollow fiber membrane filaments (3), and a solution tank (4). The manufacturing process includes the following steps: S1. Drill the corresponding number of positioning holes (6) on the membrane shell (1); S2. Make four support partitions (2) and drill corresponding positioning holes (6) for the outer shell to ensure that the hollow fiber membrane filaments (3) can pass through normally; and place the support partitions (2) on the same side of the outer shell; S3. Insert the guide rod (52) in the limiting device (5) into the positioning hole (6); S4. Select an undamaged hollow fiber membrane filament (3), place the hollow fiber membrane filament (3) on the outside of the guide rod (52), keep the hollow fiber membrane filament (3) in a flexible state to avoid bending, and then slide the hollow fiber membrane filament (3) on the guide rod (52); thereby guiding the hollow fiber membrane filament (3) through the positioning hole (6) through the guide rod (52) to achieve rapid membrane insertion; S5. Fix the outer shell side face flush with the inner shell, and move the support partition (2) to the corresponding position in sequence; S6. After fixing the position, pull out the guide rod (52) and inject epoxy resin into both ends of the membrane shell (1) to fix the hollow fiber membrane filaments (3) and cut the filaments. S7. The membrane shell (1) is connected to the solution tank (4) at both ends to complete the fabrication of a single component.

2. The method for fabricating and inserting a hollow fiber membrane component according to claim 1, characterized in that: The membrane shell (1) is made of epoxy resin board; the supporting partition (2) is made of steel plate; the hollow fiber membrane filament (3) is made of hollow fiber membrane filament with smooth surface and no depression.

3. The method for fabricating and inserting a hollow fiber membrane component according to claim 2, characterized in that: The epoxy resin board has a hole spacing of 3.5 mm or more, and the hole size is larger than the diameter of the membrane hole.

4. The method for fabricating and inserting a hollow fiber membrane component according to claim 1, characterized in that: The hollow fiber membrane filaments (3) are arranged in a forked pattern, and the hollow fiber membrane filaments (3) are pulled by the guide rod (52).

5. The method for fabricating and inserting a hollow fiber membrane component according to claim 1, characterized in that: The four supporting partitions (2) are arranged in sequence and positioned to ensure that the spacing between the partitions is equal.

6. The method for fabricating and inserting a hollow fiber membrane component according to claim 1, characterized in that: The limiting device (5) includes a fixing plate (51) and guide rods (52). Several guide rods (52) are fixedly connected to the fixing plate (51) and are concentrically corresponding to the positioning holes (6).

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