CN115646209A

CN115646209A - Method for manufacturing filtration membrane module

Info

Publication number: CN115646209A
Application number: CN202211407390.5A
Authority: CN
Inventors: 陈清; 陈忱; 陈良刚
Original assignee: Hainan Litree Purifying Technology Co Ltd
Current assignee: Hainan Litree Purifying Technology Co Ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-01-31

Abstract

The invention relates to a manufacturing method of a filtering membrane component, which comprises the following steps: providing at least one filter membrane body, wherein the filter membrane body is provided with at least two barrier layer groups arranged at intervals, and each barrier layer group comprises at least two barrier layers arranged at intervals; arranging a forming jig outside the filtering membrane body, wherein the forming jig is matched with two adjacent barrier layers in the barrier layer group to form a pouring cavity with an opening at the top end; pouring materials are injected into the pouring cavity to form at least two semi-finished end sockets; the semi-finished product end socket is cut so as to form at least one filtering membrane component with filtering end sockets at two ends, filtering membranes in the filtering end sockets are in an open state, and the flatness of the filtering end sockets is improved through the arrangement.

Description

Method for manufacturing filtration membrane module

Technical Field

The invention relates to the technical field of water treatment, in particular to a manufacturing method of a filtering membrane component.

Background

The filtration membrane module is an important component for treating sewage by a membrane filtration technology, and the filtration membranes in the filtration membrane module are mainly divided into hollow fiber membranes, flat sheet membranes, tubular membranes, roll membranes and the like, wherein the hollow fiber membranes are widely applied to the fields of municipal sewage treatment, municipal water supply treatment, industrial wastewater treatment and household water purification due to the characteristics of large filtration surface area, strong process adaptability and the like, and the manufacturing method of the filtration membrane module generally comprises the steps of solidifying and connecting a plurality of hollow fiber membranes and end heads or the inner wall of a shell by using a casting material, and forming a filtration end socket by removing part of the casting material poured in the hollow fiber membranes, and realizing the end opening of the hollow fiber membranes, such as the preparation method of the filtration membrane module described in Chinese patent application numbers CN200880013346.8 and CN200710196205.1, but the manufacturing method removes the solidified casting material to realize the end opening of the hollow fiber membranes, thereby not only causing the waste of the casting material and part of the hollow fiber membranes, but also increasing the production time and the manufacturing cost.

In order to solve the above problems, another manufacturing method of a filter membrane module has been developed, for example, a manufacturing method of a filter membrane module described in chinese patent application nos. CN200580044206.3 and CN202010333437.2, which is a manufacturing method of a filter membrane module in which a hollow fiber membrane is prefabricated into a membrane sheet and two barrier layers are coated at both ends of the membrane sheet at intervals, then a plurality of membrane sheets are laminated to form a casting cavity between the two barrier layers, and then a potting material is injected into the casting cavity to form a filter head, and both ends of the membrane sheet are still opened, thereby avoiding waste of the casting material and increase of processing time and cost.

However, the filtering end socket formed in the manufacturing method is difficult to ensure the flatness of the filtering end socket, and is not beneficial to subsequent installation of the filtering end socket.

Disclosure of Invention

Therefore, it is necessary to provide a method for manufacturing a filtration membrane module, which aims at the problem of uneven filtration heads in the currently manufactured filtration membrane module.

A manufacturing method of a filtering membrane module comprises the following steps:

s1, providing at least one filter membrane body, wherein the filter membrane body is provided with at least two barrier layer groups arranged at intervals, and each barrier layer group comprises at least two barrier layers arranged at intervals;

s2, arranging a forming jig on the outer side of the filtering membrane body, wherein the forming jig is matched with two adjacent blocking layers in the blocking layer group to form a pouring cavity with an opening at the top end;

s3, pouring materials are injected into the pouring cavity to form at least two semi-finished end sockets;

s4, cutting the semi-finished end socket to form at least one filtering membrane assembly with filtering end sockets at two ends, wherein the filtering membrane in the filtering end socket is in an open state.

The manufacturing method of the filtering membrane assembly comprises the steps of providing at least one filtering membrane body, wherein the filtering membrane body is provided with at least two barrier layer groups arranged at intervals so as to obtain a filtering membrane body with the barrier layer groups; then, step S2, a forming jig is arranged on the outer side of the filtering membrane body, and the forming jig is matched with two adjacent barrier layers in the barrier layer group to form a pouring cavity with an opening at the top end so as to facilitate subsequent pouring; injecting a pouring material into the pouring cavity to form at least two semi-finished end sockets so as to obtain filtering membranes which are combined and fastened with each other through the step S3, and cutting the semi-finished end sockets so as to form at least one filtering membrane assembly with filtering end sockets at two ends through the step S4, wherein the filtering membranes in the filtering end sockets are in an open state; in the manufacturing method of the filtering membrane component, the semi-finished end socket is cut to form at least one filtering membrane component with filtering end sockets at two ends, so that the flatness of the filtering end sockets is improved.

In one embodiment, the filter membrane body is provided with at least three barrier layer groups arranged at intervals, the casting material is injected into the casting cavity to form at least three semi-finished end sockets, and the semi-finished end sockets are cut to form at least two filter membrane modules with the filter end sockets.

In one embodiment, the step S4 specifically includes: and cutting along the central line between two adjacent barrier layers in the same barrier layer group.

In one embodiment, in the step S1, the barrier layer group includes three barrier layers arranged at intervals.

In one embodiment, in step S4, the cutting is performed along a width of the barrier layer in an intermediate position in the same barrier layer group.

In one embodiment, the severing is performed along a centerline of the middle barrier layer in the same group of barrier layers.

In one embodiment, in step S1, the following steps are specifically included:

s11, providing a plurality of filtering membranes;

s12, arranging a plurality of filtering membranes into a single layer or a plurality of layers at intervals and in parallel to form a filtering membrane arrangement body;

and S13, covering at least two barrier layer groups at intervals along the length direction of the filtering membrane array body to form the filtering membrane body.

In one embodiment, in the steps S1 and S2, the following steps are specifically included:

providing a plurality of said filter membrane bodies;

it is a plurality of to filter the membrane body range upon range of, along a plurality of adjacent two of the range upon range of direction of the membrane body of filtering the barrier layer bonds and obtains range upon range of membrane body the range upon range of membrane body sets up the shaping tool in the range upon range of membrane body outside, the shaping tool with adjacent two in the barrier layer group the barrier layer cooperation forms top open-ended the pouring die cavity.

In one embodiment, the forming fixture is a housing of the filtering membrane module, and the housing is reserved after the casting material is solidified.

In one embodiment, after the step S4, the following steps are further included:

and S5, detecting the sealing property of the filtering membrane component.

Drawings

FIG. 1 is a flow chart of a method for manufacturing a filtration membrane module according to the present invention;

FIG. 2 is a schematic view of a filtering membrane provided by the present invention;

FIG. 3 is a side view of the filter membrane body of FIG. 1;

FIG. 4 is a schematic view of a filter membrane laminated in a forming tool according to the present invention;

FIG. 5 is a schematic view of a filter head according to the present invention;

FIG. 6 is a schematic view of a filter membrane module according to the present invention;

FIG. 7 is a schematic view of a filter assembly according to the present invention;

FIG. 8 is a schematic view of another filter membrane body provided by the present invention;

FIG. 9 is a schematic view of the filtering membrane body in FIG. 8 stacked in a forming fixture;

FIG. 10 is a schematic view of another filtration membrane module made from the laminated membrane sheet of FIG. 9;

FIG. 11 is a schematic view of a filter assembly made from the filter membrane assembly of FIG. 10;

FIG. 12 is a side view of another filter membrane body provided by the present invention;

FIG. 13-a is a side view of a laminated membrane body of the same filtration membrane body according to the present invention;

FIG. 13-b is a side view of a laminated membrane sheet of different filtration membranes according to the present invention;

FIG. 14-a is a side view of a laminated membrane body formed by a staggered stack of filter membrane bodies according to the present invention;

FIG. 14-b is a side view of another alternative filter membrane body of the present invention constructed as a laminated membrane body with an offset lamination therebetween;

fig. 15 is a schematic view of another filtration membrane module provided by the present invention.

Wherein:

10. a filter assembly; 20. forming a jig;

100. a laminated membrane body; 110. a filtration membrane body; 111. a filtration membrane; 112. a barrier layer group; 1121. a barrier layer;

200. pouring a cavity; 210. pouring materials; 220. sealing the semi-finished product;

500. a filtration membrane module; 510. filtering and sealing the head; 600. a bellows; 610. a first housing; 620. a water inlet;

700. a water collection chamber.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, and fig. 7, a method for manufacturing a filtering membrane module 500 according to an embodiment of the present invention includes the following steps:

step S1, providing at least one filter membrane body 110, where the filter membrane body 110 has at least two barrier layer groups 112 arranged at intervals, each barrier layer group 112 includes at least two barrier layers 1121 arranged at intervals, and when the filter membrane body 110 is specifically arranged, the number of the filter membrane bodies 110 may be 1, 2, 3 or more, at least three barrier layer groups 112 arranged along the length direction of the filter membrane body 110 may be arranged at equal intervals, the number of the barrier layer groups 112 may be 3, 5, 8, 10 or more, and the number of the barrier layers 1121 may be 2, 3 or more;

step S2, arranging a forming jig 20 at the outer side of the filtering membrane body 110, wherein the forming jig 20 is matched with two adjacent barrier layers 1121 in the barrier layer group 112 to form a pouring cavity 200 with an open top end;

when the filter membrane body 110 is specifically arranged, the forming jig 20 may be arranged to be a U-shaped structure, the inner surface of the forming jig 20 is attached to the outer contour of the filter membrane body 110, and the forming jig 20 and two adjacent barrier layers 1121 in the same group enclose a casting cavity 200 with an opening at the top end; in order to ensure that the liquid to be poured subsequently is better confined in the pouring cavity 200 and prevent the liquid pouring material 210 from leaking, the barrier layer 1121 is generally made of a soft material to achieve better sealing performance between the filter membrane body 110 and the forming jig 20, and the barrier layer 1121 is preferably made of silica gel, ethylene-vinyl acetate, polyvinyl chloride, chloroprene rubber, polyethylene, polystyrene, ethylene propylene diene monomer, polyurethane, elastic resin, or the like; the spacing between the two barrier layers 1121 corresponds to the width of the casting cavity 200, the preferred distance between the two is 30mm-200mm, and the preferred width of the single barrier layer 1121 is 5mm-40mm;

step S3, pouring the pouring material 210 into the pouring cavity 200 to form at least two semi-finished product end sockets 220, wherein in specific setting, the pouring material 210 is poured into the pouring cavity from between two adjacent barrier layers 1121 in the same group, after the liquid pouring material 210 flows and is distributed along the outer surfaces of the filter membranes 111 in the filter membrane body 110, the space between every two filter membranes 111 is filled, and meanwhile, the liquid pouring material 210 is butted with the barrier layers 1121 at two sides in the pouring cavity 200 into a whole and is limited and blocked by the barrier layers 1121, so that the liquid pouring material 210 flows in the pouring cavity 200; as will be appreciated, semi-finished head 220 includes filter membrane body 110 cast in casting cavity 200, barrier layer set 112 forming casting cavity 200, and casting material 210; in the concrete pouring, the manner of pouring the pouring material 210 includes gravity flow type pouring, pressurized type pouring, etc., and when the height of the forming jig 20 with the U-shaped structure is not less than the height of the filtering membrane body 110 located in the forming jig 20, the pouring material 210 is preferably poured by gravity flow in a simpler manner; after the pouring is finished, all the filter membranes 111 transversely penetrate through the pouring cavities 200 which are independent and not communicated with each other; and after the casting material 210 is solidified, when the forming jig 20 is a special production jig, taking down the forming jig 20 after solidification;

and S4, cutting the semi-finished end socket 220 to form at least one filtering membrane assembly 500 with filtering end sockets 510 at two ends, wherein the filtering membrane 111 in the filtering end socket 510 is in an open state. Through the above arrangement, liquid pouring material 210 is after the surface flow distribution of filtration membrane 111 in the filtration membrane body 110, fill the interval space between every filtration membrane 111, then the effect of pouring process is to let filtration membrane 111 in the filtration membrane body 110 connect as a whole, can not change filtration membrane 111 internal state, thereby make every filtration membrane 111 that is cut off into filtration membrane subassembly 500 both ends keep former open state, and cut off to half finished product head 220 and can not have unnecessary scattered filtration membrane 111 that is not poured, filtration head 510 parallel and level smooth at filtration membrane subassembly 500 both ends, be convenient for subsequent equipment.

The manufacturing method of the filtering membrane module 500 is that at least one filtering membrane body 110 is provided, and the filtering membrane body 110 is provided with at least two barrier layer groups 112 arranged at intervals so as to obtain a large number of filtering membrane bodies 110 with the barrier layer groups 112; then, in step S2, a forming jig 20 is arranged outside the filtering membrane body 110, and the forming jig 20 is matched with two adjacent barrier layers 1121 in the barrier layer group 112 to form a pouring cavity 200 with an open top end for subsequent pouring; injecting a casting material 210 into the casting cavity 200 to form at least two semi-finished end sockets 220 to obtain filter membranes 111 tightly combined with each other, by step S3, cutting the semi-finished end sockets 220 to form at least one filter membrane assembly 500 with filter end sockets 510 at two ends, wherein the filter membranes 111 in the filter end sockets 510 are in an open state, by step S4; in the manufacturing method of the filtering membrane assembly 500, the flatness of the filtering membrane head 510 is improved by cutting the semi-finished head 220 to form at least one filtering membrane assembly 500 with the filtering head 510 at two ends.

The two manufacturing methods mentioned in the deviating technology cannot ensure the flatness of the filtering end socket, and also cannot ensure the proper distance between the barrier layer close to the tail end of the filtering membrane and the tail end of the filtering membrane in the actual production process, when the distance between the barrier layer and the tail end of the membrane is too close, the opening on the end face of the membrane is easily blocked, and when the distance between the barrier layer and the tail end of the membrane is too far, the hollow fiber membrane between the barrier layer and the tail end of the membrane has no filtering function, so that the waste of the hollow fiber membrane material is easily caused, and the hollow fiber membrane can generate fluid overflow resistance and pollution siltation, which is not beneficial to the cleaning of the filtering membrane component; in addition, both the first method for manufacturing a filtration membrane module and the second method for manufacturing a filtration membrane module described above produce filtration membrane modules individually, and thus cannot produce a plurality of filtration membrane modules at one time, resulting in low production efficiency.

Based on this, in order to solve the problems of low production efficiency, easy blockage of the opening of the end face of the filtering membrane sheet, waste of the filtering membrane material and inconvenient cleaning of the filtering membrane module 500 in the manufacturing process of the filtering membrane module 500 at present, a preferred embodiment is provided, wherein the filtering membrane body 110 is provided with at least three barrier layer groups 112 arranged at intervals, pouring materials 210 are injected into a pouring cavity 200 to form at least three semi-finished end sockets 220, and the semi-finished end sockets 220 are cut to form at least two filtering membrane modules 500 with filtering end sockets 510 at two ends. Through the arrangement, at least three separation layer groups 112 are arranged on the filter membrane body 110 at intervals, so that it can be understood that most of the separation layer groups 112 are positioned at the positions of the non-two ends of the filter membrane body 110, namely, at the middle section of the filter membrane body 110, and thus the casting cavity 200 formed by two adjacent separation layers 1121 in the separation layer groups 112 is positioned at the middle section of the filter membrane body 110, so that the situation that the end face of the filter membrane body 110 is blocked can be avoided during casting; and the semi-finished end socket 220 is cut off, so that the flatness of the filtering end socket 510 is guaranteed, redundant scattered filtering membranes 111 which are not poured are avoided, and the loss and waste of materials are reduced.

The manufacturing method of the filtering membrane module 500 is that at least one filtering membrane body 110 is provided, and the filtering membrane body 110 is provided with at least three barrier layer groups 112 arranged at intervals so as to obtain a large number of filtering membrane bodies 110 with the barrier layer groups 112; then, a forming jig 20 is arranged on the outer side of the filter membrane body 110, and the forming jig 20 is matched with two adjacent barrier layers 1121 in the barrier layer group 112 to form a pouring cavity 200 with an open top end so as to facilitate subsequent pouring; pouring materials 210 are injected into the pouring cavity 200 to form at least three semi-finished end sockets 220 so as to obtain the filtering membranes 111 which are combined and fastened with each other; finally, cutting the semi-finished end socket 220 to form at least two filtering membrane assemblies 500 with openings at two ends; compared with the prior method that the barrier layers are only arranged at the two ends of the membrane, the method for manufacturing the filtering membrane assembly 500 has the advantages that the filtering membrane body 110 at least provided with the three spaced barrier layer groups 112 is arranged, so that most of the barrier layer groups 112 are positioned at the middle section of the filtering membrane body 110, and when the pouring cavity 200 formed between the two adjacent barrier layers 1121 in the barrier layer groups 112 is poured, the situation that the opening of the end face of the filtering membrane body 110 is easily blocked during pouring is avoided; the filtering membrane assemblies 500 with a plurality of filtering end sockets 510 flattened can be obtained at one time by simultaneously cutting off at least three semi-finished end sockets 220, so that the production efficiency is improved; and the semi-finished end socket 220 is a casting body formed by combining the filtering membranes 111 with each other by the casting material 210, and no redundant scattered filtering membranes 111 which are not cast exist when the semi-finished end socket is cut, so that the waste of the materials of the filtering membranes 111 and the pollution of the materials of the filtering membranes 111 at the end parts are avoided. In order to obtain the filtering membrane module 500 with the same specification efficiently, in a preferred embodiment, in step S4, cutting is performed along a center line between two adjacent barrier layers 1121 in the same barrier layer group 112 to obtain the filtering membrane module 500 with the filtering heads 510 at two ends, and the filtering membranes 111 in the filtering heads 510 are in an open state. Through the arrangement, the filtering membrane assemblies 500 obtained after cutting are the same, and batch processing is facilitated to improve the production efficiency.

It should be noted that, a filtration membrane module 500 is obtained by cutting the two adjacent barrier layer groups 112 along the space between the two respective barrier layers 1121 thereof, and the filtration membranes 111 at the two ends of the filtration membrane module 500 are all cast into an integral filtration head 510, the integral filtration head is in a cast state, and no excess filtration membrane 111 material is left at the end of the filtration membrane module 500, and the casting process is to connect the filtration membranes 111 into an integral body without changing the internal state of the filtration membranes 111, so that the filtration membranes 111 in the filtration heads 510 at the two ends of each filtration membrane module 500 cut into pieces are kept in an original opening state.

When the filtration membrane module 500 is used specifically, it is also necessary to mount the filtration heads 510 at both ends of the filtration membrane module 500 to the capsule 600 having the water collecting chamber 700 to form the filtration module 10, and the filtration membrane 111 in the filtration membrane module 500 is communicated with the water collecting chamber 700. When the bellows 600 is specifically arranged, the bellows 600 comprises a first shell 610 and a water inlet 620, the first shell 610 is a cavity structure with an opening at one end, the water inlet 620 is arranged at a non-opening end of the first shell 610, the water inlet 620 is communicated with the cavity of the first shell 610, the water inlet 620 is used for inputting an external water source, so that the cavity of the first shell 610 becomes a water collection chamber 700, when the cavity of the first shell 610 is hermetically connected with a filtering end socket 510, a filtering membrane 111 is communicated with the water collection chamber 700, so that the filtering membrane assembly 500 performs filtering work; in the process of sealing and connecting the first casing 610 and the filtering end enclosure 510, specifically, a circle of sealant or a sealing ring is arranged inside the first casing 610 and then covered on the filtering end enclosure 510.

Referring to fig. 8 and 9, in order to strengthen the bonding between the filtering membranes 111, in a preferred embodiment, in step S1, the barrier layer group 112 includes three barrier layers 1121 arranged at intervals. When the casting mold is specifically set, the three barrier layers 1121 are arranged at equal intervals, each barrier layer 1121 wraps all the filtering membranes 111 and fills gaps between the adjacent filtering membranes 111 to form a whole, and in the following preparation, every two adjacent barrier layers 1121 in the barrier layer group 112 are matched with the forming jig 20 to form a casting cavity 200 with an opening at the top end, so that the three barrier layers 1121 in one barrier layer group 112 can form two casting cavities 200 with openings at the top end, the existence of the middle barrier layer 1121 can limit the flow of the casting material 210 to enable the two casting cavities 200 not to be communicated, and the two casting cavities 200 are injected with each other when the casting material 210 is injected.

As shown in fig. 10 and 11, in order to obtain the filter head 510 with the barrier layers 1121, in step S4, cutting is performed along the width of the barrier layer 1121 at the middle position in the same barrier layer group 112. Through the above arrangement, at least one filtering membrane assembly 500 with the filtering end sockets 510 at two ends is obtained, wherein the filtering membrane 111 in the filtering end socket 510 is in an open state and the outer end part of the filtering end socket 510 is provided with the barrier layer 1121. It should be noted that each filtering head 510 has two spaced barrier layers 1121, and the casting material 210 is filled between the two barrier layers 1121, when the capsule 600 and the filtering head 510 are sealed to obtain the filtering assembly 10, specifically, when the filtering head 510 is installed in the first housing 610, a certain barrier layer 1121 is provided at the outer end surface of the filtering head 510, and the barrier layers 1121 and the inner wall of the first housing 610 form a seal.

In order to obtain a plurality of filtration membrane modules 500 of the same size at the same time, more specifically, cutting is performed along the center line of the barrier layer 1121 at the intermediate position in the same barrier layer group 112. Through the arrangement, the filtering membrane assemblies 500 obtained after cutting are the same, and batch processing is facilitated to improve the production efficiency.

In order to conveniently form the filtering membrane array as shown in fig. 12, a preferred embodiment specifically includes the following steps in step S1:

step S11, providing a plurality of filtering membranes 111, wherein during specific setting, the filtering membranes 111 are required to be ensured to have enough length to be cut off in the subsequent process, and when the filtering membrane module 500 is manufactured on a production line, the length of the filtering membranes 111 is limited by the range of the filtering membranes 111 which can be pulled and extended on the production line;

step S12, arranging a plurality of filter membranes 111 in a single layer or a plurality of layers at intervals and in parallel to form a filter membrane array body. When the filter membrane arrangement body is specifically arranged, the filter membrane arrangement body can be a one-layer structure formed by a plurality of filter membranes 111, or can be a multi-layer structure formed by a plurality of filter membranes 111, the more the number of the layers is, the higher the filling density of the filter membranes 111 is, the less the amount of the required barrier layers 1121 is, but when the number of the layers is too large, the difficulty in tidying and arranging the filter membranes 111 is increased, the preferable number of the layers of the filter membrane arrangement body is 1-5, and the number of each layer of the filter membranes 111 in the multi-layer structure filter membrane arrangement body can be the same or different;

and S13, covering at least two barrier layer groups at intervals along the length direction of the filtering membrane array body to form a filtering membrane body 110. When the specific arrangement is performed, the blocking layer 1121 is generally formed by using a hot melt adhesive, specifically, the hot melt adhesive is coated on the filtering membrane arrangement body, so that each blocking layer 1121 wraps all filtering membranes 111 and fills gaps between adjacent filtering membranes 111 to form a whole, namely, the filtering membrane body 110, or a strip-shaped solid adhesive prepared in advance is used, the strip-shaped solid adhesive is placed on the filtering membrane arrangement body and then is heated, so that the solid adhesive is liquefied to wrap all filtering membranes 111 and fill gaps between adjacent filtering membranes 111 to form a whole; the specific number of the blocking layer groups 112 is limited by the length of the filtering membrane array, the distance between two adjacent blocking layer groups 112 is the length of one filtering membrane module 500, and when the longer the filtering membrane 111 is, the longer the filtering membrane array is, the more the number of the blocking layer groups 112 is set, the more the filtering membrane modules 500 can be produced in each batch, and the higher the production efficiency is.

Referring to fig. 13-a, 13-b, 14-a and 14-b, in order to obtain a plurality of filtering membrane modules 500, a preferred embodiment specifically includes the following steps in steps S1 and S2:

providing a plurality of filter membrane bodies 110, wherein the number and the layer number of the filter membranes 111 in each filter membrane body 110 can be the same or different when specifically arranged;

s32, laminating the plurality of filter membrane bodies 110, adhering two adjacent barrier layers 1121 along the laminating direction of the plurality of filter membrane bodies 110 to obtain a laminated membrane body 100, arranging a forming jig 20 on the outer side of the laminated membrane body 100, and matching the forming jig 20 with the two adjacent barrier layers 1121 in the barrier layer group 112 to form a pouring cavity 200 with an opening at the top end. In a specific arrangement, in the process of forming the laminated membrane body 100 by the filter membrane bodies 110, different structures of the filter membrane bodies 110 are selected to be combined to obtain the laminated membrane bodies 100 with different cross sections, the cross section of the laminated membrane body 100 can be a square, a rectangle, a circle, a trapezoid, a triangle and other polygonal laminated membrane bodies 100, and the laminated membrane bodies 100 with different cross sections can form different types of filter membrane assemblies 500, for example: the end face of the common curtain-type immersed membrane component filtering end socket 510 is rectangular, the end face of the column-type immersed membrane component filtering end socket 510 is circular or square, and the end face of the column-type pressure membrane component filtering end socket 510 is circular.

In the process of forming the laminated membrane body 100, each filtering membrane body 110 may be sequentially stacked upward, or a plurality of filtering membrane bodies 110 may be first transversely laid for a certain length and then stacked upward, and when each layer of filtering membrane body 110 is stacked upward, all the barrier layers 1121 of the next layer need to be covered one to one; when each layer of the filtering membrane body 110 is stacked, the filtering membranes 111 in the filtering membrane body 110 are stacked up and down in a right-to-right manner, or stacked in a staggered manner, and higher filling density can be obtained in a limited space under the condition that the thickness of the barrier layer 1121 between the upper filtering membrane body 110 and the lower filtering membrane body 110 is kept unchanged by staggered stacking; after the stacking is completed, the extrusion jig can extrude the barrier layers 1121 of the filtering membrane sheets 110 on the uppermost layer to make the barrier layers 1121 contact with each other and form a seal, or a layer of filtering membrane sheets 110 can be placed to extrude the barrier layers 1121 to perform a layer of seal.

After the stacking is completed to form the pouring cavity 200, gravity type injection or pressurized type injection can be adopted for pouring, wherein production equipment required by gravity type injection is simple, when the height of the forming jig 20 with a U-shaped structure is not less than the height of the stacked membrane body 100 positioned in the forming jig 20, the gravity flow type injection pouring material 210 is preferably used more simply, the operation sequence can be that all the filtration membrane bodies 110 are stacked and then poured, or quantitative pouring can be respectively carried out after each layer of filtration membrane body 110 is stacked, and the hidden danger of poor pouring forming caused by heat accumulation generated in the curing process of partial types of pouring materials 210 can be reduced by quantitative pouring for multiple times.

As shown in fig. 15, the existing forming fixture 20 is a dedicated production fixture, when the casting material 210 is not cured and formed, the forming fixture 20 cannot be detached, and needs to be detached after the casting material 210 is cured and formed, and is affected by the curing time of the casting material 210, and more dedicated production fixtures need to be prepared during batch casting, in order to better improve efficiency and save cost, in a preferred embodiment, the forming fixture 20 is a housing of the filtering membrane module 500, and the housing is reserved after the casting material 210 is cured. Through the setting, utilize filtration membrane module 500's shell as forming jig 20, after casting material 210 solidification shaping, the shell can regard as filtration membrane module 500's component and need not to dismantle, cancels the cost of making special production tool simultaneously to efficiency has been realized improving and the cost is practiced thrift.

For example: when the forming jig 20 is a semicircular shell, in order to better combine the laminated film sheet 100 with the forming jig 20, the cross section of the laminated film sheet 100 laminated by the filtering film sheet 110 is also approximately semicircular; and through the above arrangement, when the casting material 210 in the casting cavity 200 is cured and cut, a plurality of filter membrane assemblies 500 with both ends open, semicircular cross sections and semicircular shells can be obtained, two identical filter membrane assemblies 500 are combined together in a one-to-one correspondence manner through the filter heads 510, then the two filter membrane assemblies 500 are directly bonded through a sealing material, or are embedded into a circular part to be bonded to form the filter membrane assembly 500 with two circular filter heads 510, and then the membrane box 600 is hermetically bonded with the circular filter heads 510 to form the cylindrical filter assembly 10.

The method for manufacturing the filtration membrane module 500 according to the present application is applicable to various types of filtration membranes 111, and the filtration membrane 111 may be any of a hollow fiber membrane, a tubular membrane, and a flat sheet membrane. In the specific arrangement, when the filtering membrane 111 is a soft filtering membrane such as a hollow fiber membrane or a flat membrane, the soft filtering membrane can be wound and stored in a storage device such as a disc, a roll or a barrel, and then the soft filtering membrane is pulled and unreeled to form a filtering membrane array body, or the soft filtering membrane array body can be conveyed by a conveying mechanism according to the original length of the soft filtering membrane array body to form the filtering membrane array body; when the filtration membrane 111 is a rigid filtration membrane such as a tubular membrane, the filtration membrane 111 may be placed on a shelf and then translated to a destination to make a filtration membrane array.

In order to ensure the quality of the prepared filtering membrane module 500, a preferred embodiment further comprises the following steps after step S4:

and S5, detecting the sealing property of the filtering membrane assembly 500. When the filter assembly 10 is specifically arranged, the filter membrane assembly 500 and the membrane box 600 are firstly installed to form the filter assembly 10, then the filter assembly 10 is completely arranged in water, at this time, one water inlet 620 on the membrane box 600 at two ends of the filter assembly 10 is in a blocking state, compressed air with a certain pressure is input from the other water inlet 620, no air bubbles are generated on the water surface, and the sealing performance of the filter membrane assembly 500 and the sealing performance of the filter assembly 10 both meet the production standard.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A manufacturing method of a filtering membrane module is characterized by comprising the following steps:

2. The manufacturing method of the filtering membrane module as claimed in claim 1, wherein the filtering membrane module body has at least three barrier layer groups arranged at intervals, the casting material is injected into the casting cavity to form at least three semi-finished end sockets, and the semi-finished end sockets are cut to form at least two filtering membrane modules with the filtering end sockets.

3. The method for manufacturing a filtration membrane module according to claim 1, wherein the step S4 specifically includes: and cutting along the central line between two adjacent barrier layers in the same barrier layer group.

4. The method according to claim 1, wherein the barrier layer group includes three barrier layers provided at intervals in step S1.

5. The method of manufacturing a filtration membrane module according to claim 4, wherein in step S4, the cut is performed along a width of the barrier layer located at an intermediate position in the same barrier layer group.

6. The method according to claim 5, wherein the cut is made along a center line of the barrier layer located at an intermediate position in the same barrier layer group.

7. The method for manufacturing a filtration membrane module according to claim 1, specifically comprising, in step S1, the steps of:

s11, providing a plurality of filtering membranes;

s12, arranging a plurality of filter membranes into a single layer or a plurality of layers at intervals and in parallel to form a filter membrane arrangement body;

8. The method for manufacturing a filtration membrane module according to claim 1, specifically comprising, in the steps S1 and S2, the steps of:

providing a plurality of said filter membrane bodies;

9. The method for manufacturing a filtration membrane module according to claim 1, wherein the molding jig is a housing of the filtration membrane module, and the housing is retained after the casting material is solidified.

10. The method for manufacturing a filtration membrane module according to any one of claims 1 to 9, further comprising, after the step S4, the steps of:

and S5, detecting the sealing property of the filtering membrane component.