CN111841330A - Easily-disassembled and assembled hollow fiber membrane component and preparation method thereof - Google Patents
Easily-disassembled and assembled hollow fiber membrane component and preparation method thereof Download PDFInfo
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- CN111841330A CN111841330A CN202010704177.5A CN202010704177A CN111841330A CN 111841330 A CN111841330 A CN 111841330A CN 202010704177 A CN202010704177 A CN 202010704177A CN 111841330 A CN111841330 A CN 111841330A
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- fiber membrane
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
- B01D63/021—Manufacturing thereof
- B01D63/022—Encapsulating hollow fibres
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Abstract
The embodiment of the invention discloses an easily-detachable hollow fiber membrane component and a preparation method thereof, which are used for solving the technical problem that membrane tows in the conventional hollow fiber membrane component cannot be detached and replaced because the membrane tows and a shell are sealed by glue. The embodiment of the invention comprises a hollow fiber membrane tow, an upper cover and a shell with an accommodating cavity; the bottom of the shell is provided with a water outlet, the upper cover is connected to the top of the shell in a threaded manner, the upper cover is provided with a water inlet, and the outer side wall of the shell is provided with a cleaning port; the hollow fiber membrane tows are arranged in the accommodating cavity, a truncated cone end cap is arranged at the top of each hollow fiber membrane tow, the top opening of each hollow fiber membrane tow is exposed out of the top surface of the truncated cone end cap, a cylindrical end cap is arranged at the bottom of each hollow fiber membrane tow, and the truncated cone end caps are connected with the top openings of the shells in a clamping mode.
Description
Technical Field
The invention relates to the technical field of hollow fiber membrane module design, in particular to a hollow fiber membrane module easy to assemble and disassemble and a preparation method thereof.
Background
The membrane separation technology is a new technology which takes a separation membrane as a core and utilizes pressure difference to separate, concentrate and purify substances, and has the advantages of high efficiency, greenness, high effluent quality and the like. Membrane separation techniques have been widely used for water purification.
The hollow fiber membrane has the advantages of large specific surface area, self-support, large packing density and the like. How to make a hollow fiber membrane into a high-efficiency module is a research hotspot at present. The method for manufacturing the hollow fiber membrane module in the market at present generally comprises the steps of straightening hollow fiber membrane filaments, cutting the hollow fiber membrane filaments into a certain length, sealing membrane filament openings by using hole plugging materials or adhesives to prevent glue from entering the membrane filaments, fixing the membrane filaments, pouring the glue, cutting the glue after the glue is solidified to expose the openings, cleaning dust on the cutting planes, and then putting the membrane filament bundles into a shell.
Therefore, in order to solve the above-mentioned technical problems, it is an important subject of research by those skilled in the art to find an easily detachable hollow fiber membrane module and a method for manufacturing the same.
Disclosure of Invention
The embodiment of the invention discloses an easily-detachable hollow fiber membrane component and a preparation method thereof, which are used for solving the technical problem that membrane tows in the conventional hollow fiber membrane component cannot be detached and replaced because the membrane tows and a shell are sealed by glue.
The embodiment of the invention provides a hollow fiber membrane component easy to assemble and disassemble, which comprises a hollow fiber membrane tow, an upper cover and a shell with an accommodating cavity;
the bottom of the shell is provided with a water outlet, the upper cover is connected to the top of the shell in a threaded manner, the upper cover is provided with a water inlet, and the outer side wall of the shell is provided with a cleaning port;
the hollow fiber membrane tows are arranged in the accommodating cavity, a truncated cone end cap is arranged at the top of each hollow fiber membrane tow, the top opening of each hollow fiber membrane tow is exposed out of the top surface of the truncated cone end cap, a cylindrical end cap is arranged at the bottom of each hollow fiber membrane tow, and the truncated cone end caps are connected with the top openings of the shells in a clamping mode.
Optionally, the cross-sectional area of the top end face of the frustum end is larger than the cross-sectional area of the bottom end face of the frustum end.
Optionally, the cylinder end cap is spaced a predetermined distance from the inner bottom wall of the housing.
Optionally, the outer side wall of the end-sealed end of the truncated cone body is wound with a raw adhesive tape, and the truncated cone body is tightly attached to the inner side wall of the top opening of the shell through the raw adhesive tape.
Optionally, the top surface of the truncated cone end is higher than the edge of the top opening of the housing.
The embodiment of the invention provides a preparation method of a hollow fiber membrane component, which comprises the following steps:
s1, straightening a plurality of hollow fiber membranes, cutting the hollow fiber membranes into membrane filaments with preset lengths, and integrating hollow fiber membrane tows;
s2, extruding the top opening and the bottom opening of the hollow fiber membrane wire in a physical extrusion mode to seal the top opening and the bottom opening of the hollow fiber membrane wire;
s3, firstly, flatly placing one end of a hollow fiber membrane tow in a round table body cup, pouring glue, placing the round table body cup in a constant-temperature drying box for a plurality of hours, forming a round table body end cap after curing, flatly placing the other end of the hollow fiber membrane tow in a cylinder cup, pouring glue, placing the cylinder end cap in the constant-temperature drying box for a plurality of hours, and forming a cylinder end cap after curing;
s4, cutting the end cap of the cone to expose the end cap of the cone from an opening at one end of the hollow fiber membrane yarn;
and S5, placing the hollow fiber membrane tows in the shell, and blocking the end of the cone body with the top opening of the shell.
Optionally, a sectional area of a top opening of the frustoconical cup is smaller than a sectional area of a bottom of the frustoconical cup.
Optionally, the glue preparation method includes:
mixing the AB two-component epoxy resin according to the ratio of 2:1, and fully stirring to form the glue;
and then placing the glue in an ultrasonic cleaner for 2 hours, and removing air bubbles in the glue for later use.
Optionally, the S3 specifically includes:
firstly, flatly placing one end of a hollow fiber membrane tow in a cone body cup, pouring glue, placing the cone body cup in a constant-temperature drying oven for 6 hours, setting the curing temperature to be 45-60 ℃, forming a cone body end cap after curing, flatly placing the other end of the hollow fiber membrane tow in a cylinder cup, pouring glue, placing the cylinder end cap in the constant-temperature drying oven for 6 hours, setting the curing temperature to be 45-60 ℃, and forming a cylinder end cap after curing.
Optionally, the step S5 specifically includes:
firstly, winding a raw adhesive tape on the outer side wall of the truncated cone end, then placing a hollow fiber membrane tow in the shell, then clamping the truncated cone end in the top opening of the shell, enabling the top surface of the truncated cone end to be higher than the edge of the top opening of the shell, and enabling the cylinder end and the inner bottom wall of the shell to be separated by a preset distance.
According to the technical scheme, the embodiment of the invention has the following advantages:
the embodiment of the invention provides an easily-disassembled hollow fiber membrane component and a preparation method thereof, wherein the easily-disassembled hollow fiber membrane component comprises a hollow fiber membrane tow, an upper cover and a shell with an accommodating cavity; the bottom of the shell is provided with a water outlet, the upper cover is connected to the top of the shell in a threaded manner, the upper cover is provided with a water inlet, and the outer side wall of the shell is provided with a cleaning port; the hollow fiber membrane tows are arranged in the accommodating cavity, a truncated cone end cap is arranged at the top of each hollow fiber membrane tow, the top opening of each hollow fiber membrane tow is exposed out of the top surface of the truncated cone end cap, a cylindrical end cap is arranged at the bottom of each hollow fiber membrane tow, and the truncated cone end caps are connected with the top openings of the shells in a clamping mode. The hollow fiber membrane tow in this implementation is realized dismantling through the round platform body terminal cap on its top and casing and is connected, makes things convenient for the dismouting to can change hollow fiber membrane tow at any time, need not to change the casing of subassembly, bring very big facility for the user, save the cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of an easily disassembled and assembled hollow fiber membrane module provided in the present invention;
FIG. 2 is a schematic structural diagram of a hollow fiber membrane tow in an easily disassembled and assembled hollow fiber membrane module provided in the present invention;
FIG. 3 is a top sectional view of a hollow fiber membrane tow of an easily disassembled and assembled hollow fiber membrane module according to the present invention;
FIG. 4 is a schematic flow diagram of a method of making a hollow fiber membrane module provided in the present invention;
FIG. 5 is a schematic structural view of a circular truncated cone cup in the method for manufacturing a hollow fiber membrane module according to the present invention;
illustration of the drawings: a housing 1; a hollow fiber membrane tow 2; an upper cover 3; a water inlet 4; a water outlet 5; a cleaning port 6; a truncated cone end 7; a cylinder end cap 8; the top of the hollow fiber membrane filaments is open 9; a hollow fiber membrane 10. A cone cup 11.
Detailed Description
The embodiment of the invention discloses an easily-detachable hollow fiber membrane component and a preparation method thereof, which are used for solving the technical problem that membrane tows in the conventional hollow fiber membrane component cannot be detached and replaced because the membrane tows and a shell are sealed by glue.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1 to 3, the easy-to-assemble and disassemble hollow fiber membrane module provided in this embodiment includes:
the hollow fiber membrane tow comprises a hollow fiber membrane tow 2, an upper cover 3 and a shell 1 with an accommodating cavity;
the bottom of the shell 1 is provided with a water outlet 5, the upper cover 3 is in threaded connection with the top of the shell 1, the upper cover 3 is provided with a water inlet 4, and the outer side wall of the shell 1 is provided with a cleaning port 6;
the hollow fiber membrane tows 2 are arranged in the accommodating cavity, a truncated cone end cap 7 is arranged at the top of each hollow fiber membrane tow 2, the top opening of each hollow fiber membrane tow 2 is exposed out of the top surface of the corresponding truncated cone end cap 7, specifically, the top opening of each hollow fiber membrane tow 2 faces the water inlet 4 of the upper cover 3, a cylinder end cap 8 is arranged at the bottom of each hollow fiber membrane tow 2, and the truncated cone end caps 7 are connected with the top opening of the shell 1 in a clamping mode.
It should be noted that the water inlet 4 is used for allowing water from an external water source to enter the hollow fiber membrane tows 2 in the housing 1 from the water inlet 4, the water flows out of the housing 1 from the water outlet 5 after flowing out of the hollow fiber membrane tows 2, and the cleaning port 6 is used for a user to clean the inside of the housing 1.
It should be further noted that the truncated cone end 7 is connected with the top opening of the housing 1 in a clamping manner, specifically, the truncated cone end 7 is clamped with the top opening of the housing 1 in a manner similar to an interference fit, and after the two are clamped, the outer side wall of the truncated cone end 7 is tightly attached to the inner side wall of the top opening of the housing 1.
Hollow fiber membrane silk bundle 2 in this implementation realizes dismantling through the round platform body dead end 7 on its top with casing 1 and is connected, makes things convenient for the dismouting to can change hollow fiber membrane silk bundle 2 at any time, need not to change casing 1 of subassembly, bring very big facility for the user, save the cost.
Further, the cross-sectional area of the top end face of the truncated cone end 7 is larger than the cross-sectional area of the bottom end face of the truncated cone end 7.
Further, the cylinder cap 8 is spaced a predetermined distance from the inner bottom wall of the case 1.
It should be noted that the cylindrical end cap 8 is preferably spaced at least 5cm from the inner bottom wall of the housing 1, so as to facilitate the discharge of water from the water outlet 5 of the housing 1.
Furthermore, the outer side wall of the truncated cone end sealing 7 is wound with a raw adhesive tape, and the truncated cone is tightly attached to the inner side wall of the top opening of the shell 1 through the raw adhesive tape.
It should be noted that the raw tape in this embodiment, also called raw tape, is a white opaque film-shaped polytetrafluoroethylene product, and the raw tape can increase the sealing property between the outer side wall of the truncated cone sealing end 7 and the inner side wall of the top opening of the housing 1, and can prevent water from directly flowing into the gap between the truncated cone sealing end 7 and the top opening of the housing 1, thereby avoiding the problem that water flows out of the housing 1 without being filtered.
Further, the top surface of the truncated cone end 7 is higher than the edge of the top opening of the housing 1.
It should be noted that the top surface of the truncated cone end 7 is about 5cm higher than the edge of the top opening of the housing 1. Through the design, when water flows into the shell 1 from the water inlet 4, the water flow can directly enter the hollow fiber membrane tows 2.
Further, the water inlet 4 in this embodiment is specifically located at a central position of the upper cover 3, and the water outlet 5 is specifically located at a central position of the bottom of the housing 1, that is, a circle center of the water inlet 4 and a circle center of the water outlet 5 are both located on a central axis of the housing 1.
Further, the housing 1 in this embodiment is a cylindrical housing 1, and the materials for manufacturing the housing 1 and the upper cover 3 in this embodiment are not limited, and they may be made of plastic or metal.
Example two
Referring to fig. 1 to 5, the present embodiment provides a method for preparing a hollow fiber membrane module according to the first embodiment, including:
s1, straightening a plurality of hollow fiber membranes, cutting the hollow fiber membranes into membrane filaments with preset lengths, screening the membrane filaments, removing the membrane filaments with mechanical damages such as breakage and rupture, preventing the conditions such as water leakage during filtration, and finally integrating the intact membrane filaments into a hollow fiber membrane tow 2;
s2, extruding the top opening and the bottom opening of the hollow fiber membrane wire in a physical extrusion mode to seal the top opening and the bottom opening of the hollow fiber membrane wire;
in step S2, one end of the hollow fiber membrane bundle 2 is first placed on a table, and then the top opening and the bottom opening of the hollow fiber membrane bundle are extruded by a press or other equipment capable of providing pressure, the openings of the membrane bundle ends are bonded together under a great pressure, and the top opening and the bottom opening of the hollow fiber membrane bundle are sealed so that when glue is poured (step S3), the glue enters the hollow fiber membrane bundle to affect the membrane performance.
S3, firstly, flatly placing one end of a hollow fiber membrane tow 2 in a cone body cup 11, then pouring glue, placing the hollow fiber membrane tow in a constant-temperature drying box for a plurality of hours, forming a cone body end seal 7 after curing, flatly placing the other end of the hollow fiber membrane tow 2 in a cylinder cup, then pouring the glue, placing the hollow fiber membrane tow in the constant-temperature drying box for a plurality of hours, and forming a cylinder end seal 8 after curing;
s4, cutting the truncated cone end 7 to expose the truncated cone end 7 from one end opening of the hollow fiber membrane wire, and then cleaning the cutting plane to remove cutting dust on the cutting plane and prevent the cutting dust from entering the hollow fiber membrane wire.
It should be noted that, when the truncated cone end 7 is cut, the top of the hollow fiber membrane is also cut, and therefore, a new opening appears on the top of the hollow fiber membrane, as shown in fig. 3 specifically;
s5, the hollow fiber membrane tow 2 is placed in the housing 1, and the truncated cone sealing end 7 is engaged with the top opening of the housing 1.
Further, the sectional area of the top opening of the circular truncated cone cup is smaller than the sectional area of the bottom of the circular truncated cone cup.
Further, the preparation method of the glue comprises the following steps:
mixing the AB two-component epoxy resin according to the ratio of 2:1, and fully stirring to form the glue;
And then placing the glue in an ultrasonic cleaner for 2 hours, and removing air bubbles in the glue for later use.
It should be noted that the air bubbles in the glue are removed, so as to prevent the air bubbles from affecting the pouring quality of the glue.
Further, the S3 specifically includes:
one end of a hollow fiber membrane tow 2 is flatly placed in a cone 11, glue is poured, the hollow fiber membrane tow is placed in a constant temperature drying oven for 6 hours, the curing temperature is set to be 45-60 ℃, a cone sealing end 7 is formed after curing, the other end of the hollow fiber membrane tow 2 is flatly placed in a cylinder cup, glue is poured, the hollow fiber membrane tow is placed in the constant temperature drying oven for 6 hours, the curing temperature is set to be 45-60 ℃, and a cylinder sealing end 8 is formed after curing.
Further, the step S5 specifically includes:
firstly, winding a raw adhesive tape on the outer side wall of the truncated cone end 7, then placing the hollow fiber membrane tows 2 in the shell 1, then clamping the truncated cone end 7 to the top opening of the shell 1, enabling the top surface of the truncated cone end 7 to be higher than the edge of the top opening of the shell 1, and enabling the cylindrical end 8 to be separated from the inner bottom wall of the shell 1 by a preset distance.
It should be noted that, preferably, the top surface of the truncated cone end 7 is about 5cm higher than the edge of the top opening of the housing 1, and by the above design, when a water flow flows into the housing 1 from the water inlet 4, the water flow can directly enter the hollow fiber membrane tows 2;
The cylindrical end closure 8 is preferably spaced at least 5cm from the inner bottom wall of the housing 1 to facilitate the discharge of water from the outlet 5 of the housing 1.
Compared with the conventional method for manufacturing the hollow fiber membrane module, the method for manufacturing the hollow fiber membrane module has the following advantages that:
(1) the hollow fiber membrane tows 2 are straight lines, and the two ends of the hollow fiber membrane tows are solidified by glue, so that mechanical damage such as membrane filament breakage and breakage can not occur;
(2) the sealing of the hollow fiber membrane filament opening is realized by adopting a physical extrusion mode, a hole plugging material or an adhesive is not needed, the operation is simple, and the cost is low;
(3) the glue is cured at a high temperature of 45-60 ℃, so that the curing time is greatly shortened, and the influence of long-time curing of the glue on the membrane wires is reduced.
While the invention has been described in detail with reference to the accompanying drawings, it is to be understood that the same is by way of illustration and not by way of limitation.
Claims (10)
1. The hollow fiber membrane component is characterized by comprising a hollow fiber membrane tow, an upper cover and a shell with an accommodating cavity;
The bottom of the shell is provided with a water outlet, the upper cover is connected to the top of the shell in a threaded manner, the upper cover is provided with a water inlet, and the outer side wall of the shell is provided with a cleaning port;
the hollow fiber membrane tows are arranged in the accommodating cavity, a truncated cone end cap is arranged at the top of each hollow fiber membrane tow, the top opening of each hollow fiber membrane tow is exposed out of the top surface of the truncated cone end cap, a cylindrical end cap is arranged at the bottom of each hollow fiber membrane tow, and the truncated cone end caps are connected with the top openings of the shells in a clamping mode.
2. The readily removable hollow fiber membrane module of claim 1, wherein the cross-sectional area of the top end face of said truncated cone end is larger than the cross-sectional area of the bottom end face of said truncated cone end.
3. The easily disassembled and assembled hollow fiber membrane module as set forth in claim 1, wherein the cylindrical end is spaced a predetermined distance from the inner bottom wall of the housing.
4. The hollow fiber membrane module easy to assemble and disassemble as claimed in claim 1, wherein the outer sidewall of the end of the truncated cone is wrapped with raw tape, and the truncated cone is tightly attached to the inner sidewall of the top opening of the housing through the raw tape.
5. The readily removable hollow fiber membrane module of claim 1, wherein the top surface of the truncated cone end is higher than the edge of the top opening of the housing.
6. A method for producing a hollow fiber membrane module, characterized by comprising:
s1, straightening a plurality of hollow fiber membranes, cutting the hollow fiber membranes into membrane filaments with preset lengths, and integrating hollow fiber membrane tows;
s2, extruding the top opening and the bottom opening of the hollow fiber membrane wire in a physical extrusion mode to seal the top opening and the bottom opening of the hollow fiber membrane wire;
s3, firstly, flatly placing one end of a hollow fiber membrane tow in a round table body cup, pouring glue, placing the round table body cup in a constant-temperature drying box for a plurality of hours, forming a round table body end cap after curing, flatly placing the other end of the hollow fiber membrane tow in a cylinder cup, pouring glue, placing the cylinder end cap in the constant-temperature drying box for a plurality of hours, and forming a cylinder end cap after curing;
s4, cutting the end cap of the cone to expose the end cap of the cone from an opening at one end of the hollow fiber membrane yarn;
and S5, placing the hollow fiber membrane tows in the shell, and blocking the end of the cone body with the top opening of the shell.
7. The method for producing a hollow fiber membrane module according to claim 6, wherein a sectional area of a top opening of the circular truncated cup is smaller than a sectional area of a bottom of the circular truncated cup.
8. The method for preparing a hollow fiber membrane module according to claim 6, wherein the preparation method of the glue comprises the following steps:
mixing the AB two-component epoxy resin according to the ratio of 2:1, and fully stirring to form the glue;
and then placing the glue in an ultrasonic cleaner for 2 hours, and removing air bubbles in the glue for later use.
9. The method for producing a hollow-fiber membrane module according to claim 6, wherein S3 specifically includes:
firstly, flatly placing one end of a hollow fiber membrane tow in a cone body cup, pouring glue, placing the cone body cup in a constant-temperature drying oven for 6 hours, setting the curing temperature to be 45-60 ℃, forming a cone body end cap after curing, flatly placing the other end of the hollow fiber membrane tow in a cylinder cup, pouring glue, placing the cylinder end cap in the constant-temperature drying oven for 6 hours, setting the curing temperature to be 45-60 ℃, and forming a cylinder end cap after curing.
10. The method for preparing a hollow fiber module according to claim 6, wherein the step S5 specifically includes:
Firstly, winding a raw adhesive tape on the outer side wall of the truncated cone end, then placing a hollow fiber membrane tow in the shell, then clamping the truncated cone end in the top opening of the shell, enabling the top surface of the truncated cone end to be higher than the edge of the top opening of the shell, and enabling the cylinder end and the inner bottom wall of the shell to be separated by a preset distance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010704177.5A CN111841330A (en) | 2020-07-21 | 2020-07-21 | Easily-disassembled and assembled hollow fiber membrane component and preparation method thereof |
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| CN202010704177.5A CN111841330A (en) | 2020-07-21 | 2020-07-21 | Easily-disassembled and assembled hollow fiber membrane component and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115845621A (en) * | 2022-12-20 | 2023-03-28 | 天津膜天膜科技股份有限公司 | Sealing process for hollow fiber membrane and hollow fiber membrane |
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| CN110694480A (en) * | 2019-10-16 | 2020-01-17 | 德蓝水技术股份有限公司 | Method and equipment for manufacturing hollow fiber membrane module |
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| CN202356028U (en) * | 2011-11-16 | 2012-08-01 | 曾一鸣 | External pressure type hollow fiber membrane filter with detachable filter element |
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| CN115845621A (en) * | 2022-12-20 | 2023-03-28 | 天津膜天膜科技股份有限公司 | Sealing process for hollow fiber membrane and hollow fiber membrane |
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Application publication date: 20201030 |