A method for potting a membrane module

Abstract

The application discloses a glue filling method for a membrane module, which comprises the following steps: a preparation step, a hydrophilic glue filling step, a sealing step and a hydrophilic glue cleaning step. The preparation step provides a sealing shell and a membrane wire, the sealing shell is provided with a sealing cavity, one end of the sealing cavity is provided with a first opening, and the membrane wire is provided with a hollow through hole; the hydrophilic glue filling step provides a hydrophilic glue, the hydrophilic glue is soluble in water; the first opening is upward, the hydrophilic glue is filled in the sealing cavity, the height of the hydrophilic glue is lower than the first opening, and one end of the membrane wire is vertically inserted into the hydrophilic glue; the sealing step provides sealing glue, the sealing glue is filled in the space above the hydrophilic glue in the sealing cavity, and the sealing glue wraps and fixes the membrane wire; and the hydrophilic glue cleaning step uses water to clean the hydrophilic glue which blocks the hollow through hole. The method can avoid using a cutting process to ensure the connection of the membrane wire, thereby reducing the operation difficulty.

Description

Technical Field

[0001] This invention relates to a method for manufacturing wastewater treatment equipment, and particularly to a method for potting membrane modules. Background Technology

[0002] Membrane modules are commonly used in wastewater treatment processes. A membrane module consists of membrane fibers and end caps. The membrane fibers are hollow fiber membranes, and their ends need to be fixed to the end caps using a potting compound. In existing technologies, potting compound is typically injected into the end caps, and the membrane fibers are inserted into the potting compound to complete the potting process. For membrane modules, the hollow pores of the membrane fibers need to remain unobstructed. However, during the potting process, the potting compound seals the ends of the membrane fibers. Therefore, existing technologies require cutting off the portion of the membrane fibers blocked by the potting compound to keep the hollow pores open. This potting method involves cutting off the membrane fibers, which is difficult and cumbersome for complex end cap structures, impacting production efficiency. Furthermore, the process of cutting off the membrane fibers is also wasteful. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a potting method for membrane modules that avoids the use of a cutting process to ensure the continuity of membrane fibers, and is easy to operate.

[0004] According to an embodiment of the present invention, a potting method for a membrane module includes the following steps: a preparation step: providing a casing and membrane fibers, wherein the casing is provided with a potting cavity, one end of the potting cavity has a first opening, and the membrane fibers have hollow through-holes; a hydrophilic adhesive potting step: providing a hydrophilic colloid, the hydrophilic colloid being soluble in water; with the first opening facing upwards, the hydrophilic colloid is poured into the potting cavity, the height of the hydrophilic colloid being poured is lower than the first opening, and one end of the membrane fibers is vertically inserted into the hydrophilic colloid; a potting step: providing a potting colloid, and pouring the potting colloid into the space above the hydrophilic colloid in the potting cavity, such that the potting colloid wraps and fixes the membrane fibers; a hydrophilic adhesive cleaning step: cleaning the hydrophilic colloid blocking the hollow through-holes with water.

[0005] According to an embodiment of the present invention, a potting method for membrane modules has at least the following advantages: In the above method, one end of the membrane filament can be sealed and initially fixed with a hydrophilic colloid before potting with a potting compound. After potting with the potting compound, the hydrophilic colloid that affects the connectivity of the membrane filament is removed with water. Compared with the method of directly potting the end of the membrane filament with a potting compound, the above method eliminates the need to cut off the end of the membrane filament to maintain its connectivity, reduces operational difficulty, and saves membrane filament material.

[0006] According to some embodiments of the present invention, the other end of the potting cavity has a second opening, and the preparation step includes providing a sealing plate, sealing the second opening with the sealing plate, and removing the sealing plate after the potting step and before the cleaning hydrophilic adhesive step.

[0007] According to some embodiments of the present invention, the step of cleaning the hydrophilic adhesive includes: injecting water into the hollow through-hole.

[0008] According to some embodiments of the present invention, the step of cleaning the hydrophilic adhesive further includes: cleaning the hydrophilic adhesive in the potting cavity with water.

[0009] According to some embodiments of the present invention, the sealing shell is provided with a connecting channel, the filling cavity extends through the channel wall of the connecting channel, the filling cavity and the connecting channel are interconnected through a communication port, and the connecting channel is provided with a channel opening; the preparation step includes: providing a sealing member, the sealing member being detachably insertable into the connecting channel, the sealing member being provided with a sealing portion, and inserting the sealing member into the connecting channel such that the sealing portion closes the communication port.

[0010] According to some embodiments of the present invention, the connecting channel is a straight channel, the channel opening is an open end of the straight channel, the sealing member is a columnar member adapted to the straight channel, and the sealing part is the peripheral wall of the columnar member; the method of installing the sealing member into the connecting channel is: inserting the sealing member into the connecting channel through the channel opening.

[0011] According to some embodiments of the present invention, the sealing shell is provided with a connecting channel, the potting cavity extends through the channel wall of the connecting channel, the potting cavity and the connecting channel are interconnected through a communication port, and the connecting channel is provided with a channel opening; the step of cleaning the hydrophilic adhesive includes: keeping the other end of the membrane filament vented, and pressing water into the connecting channel through the channel opening.

[0012] According to some embodiments of the present invention, in the preparation step, two sealing shells are provided, and then the two ends of the membrane filament are respectively fixed to the two sealing shells by the hydrophilic adhesive filling step, the sealing step, and the hydrophilic adhesive cleaning step.

[0013] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0015] Figure 1 This is a schematic diagram illustrating the steps of an embodiment of the present invention;

[0016] Figure 2 This is a cross-sectional structural diagram of the hydrophilic adhesive filling step in an embodiment of the present invention;

[0017] Figure 3 This is a cross-sectional structural diagram of the potting step in an embodiment of the present invention;

[0018] Figure 4 This is a schematic cross-sectional view of the structure after the hydrophilic colloid has been removed, according to an embodiment of the present invention.

[0019] Figure 5 This is a perspective view of another structure of the enclosure according to an embodiment of the present invention;

[0020] Figure 6 This is one of the structural schematic diagrams of the sealing component and the water spray pipe according to an embodiment of the present invention;

[0021] Figure 7 This is a second schematic diagram of the sealing component and water spray pipe according to an embodiment of the present invention;

[0022] Figure 8 For the embodiments of the present invention Figure 5 A cross-sectional view of the casing where hydrophilic adhesive is applied.

[0023] Figure 9 For the embodiments of the present invention Figure 5 A cross-sectional view of the encapsulation process shown.

[0024] Figure 10 This is a cross-sectional view of the water spray nozzle of the water spray pipe in an embodiment of the present invention when it faces the hydrophilic colloid.

[0025] Figure 11 for Figure 10 A cross-sectional view of the structure after the hydrophilic colloid in the structure has been removed and the sealing component has been removed.

[0026] Figure 12 In this embodiment of the invention, the membrane fibers are encapsulated in two... Figure 5 A schematic cross-sectional view of the enclosure shown.

[0027] Figure label:

[0028] 100 for the casing, 110 for the filling cavity, 120 for the connecting channel, and 121 for the channel opening;

[0029] Membrane fiber 200;

[0030] Hydrocolloid 300;

[0031] Potting compound 400;

[0032] 500mm sealing plate;

[0033] 600 sealing component, 610 sealing part, 620 water outlet, 630 collection opening;

[0034] The water spray pipe is 700mm and the water spray nozzle is 710mm. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0037] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0038] In the description of this invention, unless otherwise explicitly defined, terms such as "setting," "installing," and "connecting" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0039] Reference Figures 1 to 4A potting method for membrane modules includes the following steps: a preparation step, a hydrophilic adhesive potting step, a potting and sealing step, and a hydrophilic adhesive cleaning step. Preparation steps: Provide a casing 100 and a membrane filament 200. The casing 100 is provided with a filling cavity 110, one end of which has a first opening. The membrane filament 200 has a hollow through-hole. Hydrophilic adhesive filling step: Provide a hydrophilic colloid 300, which is soluble in water. With the first opening facing upwards, pour the hydrophilic colloid 300 into the filling cavity 110. The pouring height of the hydrophilic colloid 300 is lower than the first opening, so that one end of the membrane filament 200 is vertically inserted into the hydrophilic colloid 300. Filling step: Provide a filling colloid 400. Pour the filling colloid 400 into the space above the hydrophilic colloid 300 in the filling cavity 110, so that the filling colloid 400 wraps and fixes the membrane filament 200. Cleaning hydrophilic adhesive step: Clean the hydrophilic colloid 300 blocking the hollow through-hole with water.

[0040] In the above method, one end of the membrane fiber 200 can be sealed and initially fixed with hydrophilic colloid 300 before potting with encapsulating colloid 400. After potting with encapsulating colloid 400, the hydrophilic colloid 300 that affects the connectivity of the membrane fiber 200 is removed with water. Compared with directly potting the end of the membrane fiber 200 with encapsulating colloid 400, the above method eliminates the need to cut off the end of the membrane fiber 200 to maintain its connectivity, reduces operational difficulty, and saves membrane fiber 200 material.

[0041] In the embodiments, the hydrophilic colloid can specifically be gelatin, agar, gellan gum, or carrageenan, etc., and the potting colloid can specifically be epoxy resin, silicone resin, or polyurethane, etc. In the embodiments, hot water can be used to clean the hydrophilic colloid 300 to speed up the cleaning process. In the embodiments, it is preferable to perform the potting step after the hydrophilic colloid 300 has solidified. However, if the potting colloid 400 used is incompatible with the hydrophilic colloid 300 and is clearly delaminated on the upper side of the hydrophilic colloid 300, the potting step can be performed directly without waiting for the hydrophilic colloid 300 to solidify.

[0042] In this embodiment, the height of the hydrophilic colloid 300 is lower than the first opening. Specifically, the height of the filling can be less than 2 / 3 of the height of the filling cavity 110. For example, the hydrophilic colloid 300 can be filled to 1 / 3 or 1 / 2 of the height of the filling cavity 110 to ensure that there is a sufficient thickness of the filling colloid 400. Of course, those skilled in the art can also reasonably arrange the height of the hydrophilic colloid 300 filling according to the actual situation and are not limited to the above-described embodiments.

[0043] In this embodiment, the other end of the potting cavity 110 has a second opening. The preparation steps include providing a sealing plate 500, sealing the second opening with the sealing plate 500, and removing the sealing plate 500 after the potting step and before the cleaning of the hydrophilic adhesive step. Using the above method facilitates subsequent cleaning of the hydrophilic adhesive 300.

[0044] In this embodiment, the step of cleaning the hydrophilic adhesive includes injecting water into the hollow through-hole, thereby using the pressure of the water flow to dissolve and flush away the hydrophilic adhesive 300 blocking the membrane filament 200, so that the membrane filament 200 can remain connected.

[0045] In this embodiment, the step of cleaning the hydrophilic adhesive further includes: cleaning the hydrophilic adhesive 300 in the potting cavity 110 with water, thereby further cleaning away the remaining hydrophilic adhesive 300 and avoiding affecting subsequent use.

[0046] In one embodiment, the hydrophilic colloid 300 in the potting cavity 110 can be cleaned with water first, and then water can be injected into the hollow through-hole of the membrane fiber 200 for better cleaning effect. Of course, it is conceivable that in some embodiments, the blocked hydrophilic colloid 300 can also be cleaned simply by injecting water into the hollow through-hole.

[0047] Reference Figure 5 For the enclosure 100 with the following structure: the enclosure 100 is provided with a connecting channel 120, the filling cavity 110 extends through the channel wall of the connecting channel 120, the filling cavity 110 and the connecting channel 120 are interconnected through a connecting port, and the connecting channel 120 is provided with a channel opening 121. The connecting channel 120 is used to communicate with the hollow through-holes of each membrane fiber 200, thereby facilitating the extraction of water from the hollow through-holes of the membrane fiber 200 or the injection of oxygen into each membrane fiber 200.

[0048] For the aforementioned casing 100, the preparation steps include: providing a sealing component 600 (structure as follows) Figure 6 and Figure 7 As shown), the sealing component 600 can be detachably installed into the connecting channel 120. The sealing component 600 is provided with a sealing part 610. When the sealing component 600 is installed into the connecting channel 120, the sealing part 610 closes the communication opening. By configuring the sealing component 600, the hydrophilic colloid 300 can be prevented from entering the connecting channel 120, reducing the difficulty of subsequent cleaning and saving the hydrophilic colloid 300. The potting process for the above-mentioned sealing shell 100 is as follows: Figures 8 to 11 As shown.

[0049] Regarding the aforementioned sealing shell 100, the steps for cleaning the hydrophilic adhesive include: keeping the other end of the membrane filament 200 vented, and pressing water into the connecting channel 120 through the channel opening 121. This allows the pressed water to dissolve the hydrophilic colloid 300, and the dissolved water is then forced out through the other end of the membrane filament 200, thus enabling the membrane filament 200 to connect. It is understood that keeping the other end of the membrane filament 200 vented means that the other end of the membrane filament 200 is not connected to an external water source, but remains in a free and unobstructed state.

[0050] Regarding the aforementioned casing 100, in the preparation step, two casings 100 are provided. Then, through the steps of filling with hydrophilic adhesive, filling and sealing, and cleaning the hydrophilic adhesive, the two ends of the membrane fiber 200 are respectively fixed to the two casings 100, as follows. Figure 12 As shown.

[0051] In this embodiment, the connecting channel 120 is a straight channel, the channel opening 121 is an open end of the straight channel, the sealing member 600 is a columnar member adapted to the straight channel, and the sealing part 610 is the peripheral wall of the columnar member; the method of installing the sealing member 600 into the connecting channel 120 is as follows: the sealing member 600 is inserted into the connecting channel 120 through the channel opening 121. The sealing member 600 described above has a simple structure, is easy to implement, and is convenient to install and remove.

[0052] It is conceivable that the sealing member 600 is not limited to the above-described embodiments. In other embodiments, the sealing member 600 may also adopt the following structure (not shown in the figures): The sealing member 600 includes a sealing part 610, a base part, and an elastic part. The base part and the sealing part 610 are disposed opposite to each other. The elastic part is disposed between the base part and the sealing part 610. The elastic part is used to provide elastic force to separate the sealing part 610 and the base part from each other. The sealing part 610 is larger than the communication opening (i.e., the width and / or length of the sealing part 610 is larger than the corresponding width and length of the communication opening). When the sealing member 600 is inserted into the connection channel 120, the base part and the sealing part 610 can press against the channel wall of the connection channel 120 respectively through the action of the elastic part, so that the sealing part 610 can stably block the communication opening.

[0053] In this embodiment, the connecting channel 120 is cylindrical, and the sealing member 600 is a cylindrical pipe with an outlet 620. The pipe wall of the sealing member 600 has a collection opening 630 communicating with the internal space of the pipe. The sealing member 600 is rotatably mounted on the connecting channel 120. When the sealing member 600 rotates, the sealing part 610 and the collection opening 630 can sequentially face the communication opening. The sealing member 600 is connected to a water spray pipe 700, which is located within the internal space of the sealing member 600. The water spray pipe 700 runs along the connecting channel 120. The length direction of the nozzle 700 is set, and the water spray pipe 700 has a spray nozzle 710 facing the collection opening 630. The cleaning step of the hydrophilic adhesive includes: rotating the sealing member 600 so that the connecting port and the collection opening 630 are opposite each other, connecting water to the water spray pipe 700 so that the water is sprayed from the spray nozzle 710 onto the hydrophilic adhesive 300 in the potting cavity 110. The hydrophilic adhesive 300 is dissolved by the water sprayed from the water spray pipe 700 and enters the internal cavity of the sealing member 600 through the collection opening 630, and finally flows out through the outlet 620. With the above structure and method, the sealing member 600 integrates the structure for cleaning the hydrophilic adhesive 300, thereby further reducing the difficulty of cleaning the hydrophilic adhesive 300 in the potting cavity 110.

[0054] In this embodiment, the spray nozzles 710 of the spray pipe 700 are arranged in multiple rows. In each row, the spray nozzles 710 are arranged along the length of the spray pipe 700. The spray nozzles 710 in each row are arranged at intervals along the circumference of the spray pipe 700, thereby forming a wide-coverage spray cleaning and achieving a better cleaning effect.

[0055] In some embodiments, multiple rows of spray nozzles 710 can be evenly distributed around the circumference of the spray pipe 700. The spray pipe 700 is pivotally connected to the sealing member 600, and the spray pipe 700 is configured to rotate around its own axis. This allows the position of the spray pipe 700 to be adjusted when some spray nozzles 710 are blocked, so that the remaining unblocked spray nozzles 710 can spray water towards the hydrophilic colloid 300. Furthermore, during the hydrophilic colloid cleaning step, after water is introduced into the spray pipe 700, the spray pipe 700 can be continuously rotated, thereby changing the direction of the spray water flow and further improving the efficiency of cleaning the hydrophilic colloid 300. Additionally, the spray pipe 700 can be configured to move back and forth along its length, thereby further enhancing the change in the direction of the spray water flow.

[0056] It is conceivable that the method described above is not limited to cleaning the hydrophilic colloid 300 in the potting cavity 110. For example, the sealing component 600 can be disassembled first, and the cleaning can be done by inserting a rod with a water spray head into the sealing component 600.

[0057] In this embodiment, to reduce the difficulty of disassembling or rotating the sealing component 600, the sealing portion 610 of the sealing component 600 and the connecting channel 120 can be fitted with a gap (since the hydrophilic colloid has a certain degree of viscosity when it is not solidified, a reasonable configuration of the gap fit can ensure that the hydrophilic colloid 300 will not leak through the gap). When disassembling or rotating the sealing component 600, water is poured into the gap between the sealing portion 610 and the connecting channel 120, thereby dissolving at least part of the hydrophilic colloid adhering to the sealing component 600, reducing the difficulty of disassembling or rotating the sealing component 600. Of course, in specific implementation, sufficient force can also be applied to ensure the disassembly and rotation of the sealing component 600.

[0058] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A method of potting a membrane module, characterized by, The method comprises the following steps: A preparation step: providing an enclosure (100) and a membrane filament (200), the enclosure (100) is provided with a potting cavity (110), one end of the potting cavity (110) is provided with a first opening, the membrane filament (200) is provided with a hollow through hole; A hydrophilic glue filling step: providing a hydrophilic glue (300), the hydrophilic glue (300) is soluble in water; the first opening is upward, the hydrophilic glue (300) is filled in the potting cavity (110), the height of the hydrophilic glue (300) is lower than the first opening, and one end of the membrane filament (200) is vertically inserted into the hydrophilic glue (300); A potting step: providing a potting glue (400), the potting glue (400) is filled in the space above the hydrophilic glue (300) in the potting cavity (110), so that the potting glue (400) wraps and fixes the membrane filament (200); A hydrophilic glue cleaning step: the hydrophilic glue (300) blocking the hollow through hole is cleaned with water.

2. The method of potting a membrane module according to claim 1, wherein: The other end of the potting cavity (110) is provided with a second opening, the preparation step comprises providing a sealing plate (500), the second opening is blocked by the sealing plate (500), and the sealing plate (500) is removed after the potting step and before the hydrophilic glue cleaning step.

3. The method of potting a membrane module according to claim 1 or 2, characterized in that: The hydrophilic glue cleaning step comprises: injecting water flow into the hollow through hole.

4. The method of potting a membrane module according to claim 3, wherein: The hydrophilic glue cleaning step further comprises: cleaning the hydrophilic glue (300) in the potting cavity (110) with water.

5. The method of potting a membrane module of claim 1, wherein: The enclosure (100) is provided with a connecting channel (120), the potting cavity (110) penetrates through the channel wall of the connecting channel (120), the potting cavity (110) and the connecting channel (120) are connected to each other through a communication port, and the connecting channel (120) is provided with a channel opening (121); The preparation step comprises: providing a blocking piece (600), the blocking piece (600) can be detachably installed in the connecting channel (120), and the blocking piece (600) is provided with a blocking part (610); the blocking piece (600) is installed in the connecting channel (120), so that the blocking part (610) closes the communication port.

6. The method of potting a membrane module according to claim 5, wherein: The connecting channel (120) is a straight channel, the channel opening (121) is an opening at one end of the straight channel, the blocking piece (600) is a columnar member matched with the straight channel, and the blocking part (610) is a peripheral wall of the columnar member; the method for installing the blocking piece (600) in the connecting channel (120) is that the blocking piece (600) is inserted into the connecting channel (120) through the channel opening (121).

7. The method of potting a membrane module of claim 1, wherein: The enclosure (100) is provided with a connecting channel (120), the potting cavity (110) penetrates through the channel wall of the connecting channel (120), the potting cavity (110) and the connecting channel (120) are connected to each other through a communication port, and the connecting channel (120) is provided with a channel opening (121); The cleaning step of the hydrophilic glue includes: keeping the other end of the membrane wire (200) empty, and pressing water flow into the connecting channel (120) through the channel opening (121).

8. The method of potting a membrane module according to claim 7, wherein: In the preparation step, the capsule (100) provides two, and then through the hydrophilic glue filling step, the sealing step and the cleaning step of the hydrophilic glue, the two ends of the membrane wire (200) are fixed in the two capsules (100).

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