Immersed membrane separator

Abstract

The invention provides an immersed membrane separator which comprises a membrane assembly and a supporting and limiting part, the supporting and limiting part comprises an upper module and a lower module, the upper module and the lower module are mutually independent, the upper module comprises an abutting piece which downwards abuts against the membrane assembly, the lower module comprises a supporting piece, and the supporting piece is arranged between the upper module and the lower module. The supporting piece is mounted below the membrane component and upwards supports the membrane component, in a use state, the upper module is connected to the side wall of a membrane pool where the immersed membrane separator is located, the pressing piece can be detached from the side wall of the membrane pool, and the membrane component can be freely inserted and pulled up and down after the pressing piece is detached. When the water treatment capacity is increased, a newly added membrane component can be inserted into the current idle slot or a membrane separator can be additionally arranged in the membrane pool, and the lower module of the additionally arranged membrane separator can be basically seamlessly spliced with the lower module of the original membrane separator in the membrane pool, so that the volume of the membrane pool is saved while the number of the membrane components is conveniently and quickly expanded.

Description

Technical Field

[0001] The present application relates to the technical field of microfiltration or ultrafiltration membrane separation, and in particular to an immersed membrane separator. Background Art

[0002] The submerged membrane separator is the core component of the submerged membrane filtration system (SMF). At present, the submerged membrane separators on the market generally adopt an integral support and limiting structure. When the water treatment capacity increases and one or more groups of submerged membrane separators need to be added to the membrane pool, the gap between the added submerged membrane separators and the original submerged membrane separators in the membrane pool is relatively large, resulting in a waste of membrane pool volume. In addition, the process of adding submerged membrane separators requires the use of lifting equipment for overall lifting, which makes the addition inconvenient. In addition, the number of membrane components integrated inside the integral support and limiting structure is fixed and cannot be expanded.

[0003] In view of this, how to further save the membrane pool volume while conveniently and quickly expanding the number of membrane components is a technical problem that needs to be solved by technical personnel in this field. Summary of the invention

[0004] In order to solve the above-mentioned technical problems, the present application provides an submerged membrane separator, which includes a membrane assembly and a supporting and limiting portion, wherein the supporting and limiting portion includes an upper module and a lower module, wherein the upper module and the lower module are independent of each other, wherein the upper module includes a pressing member, wherein the pressing member presses the membrane assembly downward, and wherein the lower module includes a supporting member, wherein the supporting member is installed below the membrane assembly, and wherein the supporting member supports the membrane assembly upward, and wherein when in use, the upper module is connected to the side wall of the membrane pool where the submerged membrane separator is located.

[0005] An embodiment of a submerged membrane separator, wherein a flow channel is provided inside the support member, and the support member is provided with an air source interface for connecting to an external air source. The submerged membrane separator includes an aeration pipeline, and the aeration pipeline is located below the membrane assembly. The aeration pipeline is connected to the internal flow channel of the support member, and the aeration pipeline is provided with aeration holes.

[0006] An embodiment of an immersed membrane separator, the immersed membrane separator includes multiple rows of membrane components, and also includes a water production branch pipe, a water production main pipe and a plug, each row of membrane components is provided with a water production outlet, the water production main pipe is provided with multiple interfaces, each of the water production outlets is communicated with one of the water production branch pipes and one of the interfaces respectively, the support limit portion is provided with multiple rows of slots, each row of membrane components is respectively inserted in a row of the slots, the pressing member can be removed, and after the pressing member is removed, the membrane component can be moved upward to pull the membrane component out of the slot, the immersed membrane separator has a non-full load use state and a full load use state, in the non-full load use state, some of the interfaces are blocked by the plug, and some of the slots are not inserted with the membrane components, in the full load use state, each of the interfaces is respectively communicated with one of the water production branch pipes and one of the water production outlets, and a row of membrane components is inserted in each row of the slots.

[0007] In one embodiment of the submerged membrane separator, each row of the slots includes upper slots and lower slots aligned vertically, the upper slots are arranged in the upper module, and the lower slots are arranged in the lower module.

[0008] An embodiment of a submerged membrane separator, the upper module includes an upper connecting piece, the upper connecting piece is installed on the left side or the right side of the membrane assembly, the upper slot is arranged on the side of the upper connecting piece close to the membrane assembly, the upper slot has an upper notch, after the pressing piece is removed, the membrane assembly can move upward and leave the slot through the upper notch.

[0009] An embodiment of a submerged membrane separator, the lower module includes a lower connecting member and a lower leg, the support member is a frame structure, the lower connecting member is installed in the frame opening of the support member, the lower slot is arranged on the upper side of the lower connecting member, the lower connecting member supports the membrane assembly upward, and the lower leg is connected to the bottom of the lower connecting member to support the lower connecting member and the support member.

[0010] In one implementation manner of the submerged membrane separator, each of the produced water outlets is respectively connected to one of the first adapters, and each of the first adapters is respectively detachably connected to a first port of one of the produced water branch pipes.

[0011] In one embodiment of the submerged membrane separator, the water production branch pipe is a flexible pipe, one end of the first adapter passes through the first port and is inserted into the water production branch pipe, and a detachable first clamp is provided outside the water production branch pipe to clamp the water production branch pipe and the first adapter, one end of the first adapter passes through the water production outlet and is inserted into the upper water collecting pipe, and a sealing ring is provided between the first adapter and the upper water collecting pipe for sealing.

[0012] In one implementation of the submerged membrane separator, the second port of each of the water production branch pipes is detachably connected to a second adapter to be connected to the corresponding interface through the second adapter.

[0013] In one embodiment of the submerged membrane separator, the water production branch pipe is a flexible pipe, one end of the second adapter passes through the second port and is inserted into the water production branch pipe, and a detachable second clamp is provided outside the water production branch pipe to tighten the water production branch pipe and the second adapter.

[0014] The submerged membrane separator provided in the present application can meet the increased water treatment capacity demand by adding one or more groups of submerged membrane separators in the membrane pool when the water treatment capacity increases. Since the upper module is connected to the side wall of the membrane pool, there is no need to set a column between the upper module and the lower module to support the upper module. Therefore, the upper module and the lower module can be independent of each other. In this way, when adding an submerged membrane separator, the lower module can be installed on the bottom wall of the membrane pool first, and then the membrane assembly can be installed, and then the upper module can be installed on the side wall of the membrane pool, so that the lower module, the membrane assembly and the upper module can be manually transported and installed separately in turn. Therefore, the position of the lower module can be flexibly adjusted, so that the lower module of the added submerged membrane separator and the lower module of the original submerged membrane separator in the membrane pool are basically seamlessly spliced, thereby saving the volume of the membrane pool. Moreover, since there is no need for overall lifting, the addition process is convenient and quick.

[0015] In addition, the submerged membrane separator provided in the present application can also adapt to different water treatment volume requirements by expanding or reducing the number of membrane components of the submerged membrane separator. For example, when the water treatment volume increases, a new membrane component can be added to the currently idle slot of the submerged membrane separator, and then the plug blocking the currently idle interface is removed, and the water production outlet of the newly added membrane component is connected to the currently idle interface. When the water treatment volume decreases, some membrane components can be pulled out of the slot of the submerged membrane separator, and then the currently idle interface is blocked with a plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of an embodiment of a water production device of an immersed membrane filtration system provided in the present application;

[0017] Figure 2 for Figure 1 A partial stereogram of the upper module in FIG.

[0018] Figure 3 A three-dimensional diagram of a pressing member of an upper module;

[0019] Figure 4 is a three-dimensional diagram of an upper connecting member of an upper module;

[0020] Figure 5 for Figure 1 A three-dimensional view of the middle and lower modules and aeration pipeline;

[0021] Figure 6 A three-dimensional view of a support member of a lower module;

[0022] Figure 7 is a three-dimensional diagram of the lower connecting member and the lower supporting leg of the lower module;

[0023] Figure 8 It is a three-dimensional diagram of the aeration pipeline;

[0024] Fig. 9 for Figure 1 A partial enlarged view of the connection position between the upper water collecting pipe and the water production branch pipe;

[0025] Fig.10 for Figure 1 A partial enlarged view of the connection between the water production branch pipe and the water production main pipe;

[0026] Fig.11 for Figure 1 A partial side view of

[0027] Fig.12 for Fig.11 A cross-sectional view of the first adapter;

[0028] The following are the descriptions of the reference numerals:

[0029] 11 membrane assembly, 111 membrane element, 112 upper water collecting pipe, A water production outlet, 113 lower water collecting pipe, 114 connecting pipe, 12 first adapter, B first limiting surface, C second limiting surface, 13 water production branch pipe, 14 water production main pipe, 14a interface, 15 second adapter, 16 support limiting part, 161 upper module, 161a pressure piece, 161b upper connecting piece, E upper slot, 162 lower module, 162a support piece, D gas source interface, 162b lower connecting piece, F lower slot, 162c lower leg, 17 aeration pipeline, 18 first clamp, 19 second clamp. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] like Figure 1 As shown, the submerged membrane separator provided by the present application includes a membrane assembly 11 and a support and stopper 16, and the support and stopper 16 includes an upper module 161 and a lower module 162, and the upper module 161 and the lower module 162 are independent of each other. In the use state, the upper module 161 is connected to the side wall of the membrane pool, and the lower module 162 is connected to the bottom wall of the membrane pool.

[0032] like Figure 3-Figure 5As shown, the upper module 161 includes a pressing member 161a, which is approximately located above the membrane assembly 11 and presses the membrane assembly 11 downward. Figure 6-Figure 9 As shown, the lower module 162 includes a support member 162 a , which is generally located below the membrane assembly 11 , and the support member 162 a supports the membrane assembly 11 upward.

[0033] When the water treatment capacity increases, one or more groups of submerged membrane separators can be added to the membrane pool to meet the increased water treatment capacity demand.

[0034] In the past, when adding a membrane separator with an integral support and limiting structure in a membrane pool, it was necessary to use lifting equipment to lift the membrane separator as a whole. The position of the membrane separator could not be flexibly adjusted, resulting in a large gap between the added membrane separator and the original membrane separator in the membrane pool, wasting the membrane pool volume and making the addition process inconvenient.

[0035] The submerged membrane separator provided in the present application can first install the lower module 162 on the bottom wall of the membrane pool when adding the submerged membrane separator in the membrane pool, and then install the membrane assembly 11, and then install the upper module 161 on the side wall of the membrane pool, so that the lower module 162, the membrane assembly 11 and the upper module 161 can be manually transported and installed separately in sequence. Therefore, the position of the lower module 162 can be flexibly adjusted, so that the lower module 162 of the added submerged membrane separator and the lower module 162 of the original submerged membrane separator in the membrane pool can be basically seamlessly spliced, thereby saving the volume of the membrane pool. Moreover, since there is no need for overall lifting, the addition process is convenient and quick.

[0036] like Figure 1 As shown, the submerged membrane separator provided in the present application includes multiple rows of membrane components, and also includes a water production branch pipe 13, a water production main pipe 14 and a plug (not shown in the figure). The multiple rows of membrane components 11 are arranged in sequence. In the description of the present application, the arrangement direction of the multiple rows of membrane components 11 is the front-to-back direction. In the description of the present application, the up-down direction refers to the direction perpendicular to the front-to-back direction, and the left-right direction refers to the direction perpendicular to both the front-to-back direction and the up-to-down direction.

[0037] like Figure 2As shown, each row of membrane modules 11 is provided with a produced water outlet A. In the illustrated embodiment, each row of membrane modules 11 includes a membrane element 111, an upper water collecting pipe 112 located above the membrane element 111, a lower water collecting pipe 113 located below the membrane element 111, and a connecting pipe 114 connected between the upper water collecting pipe 112 and the lower water collecting pipe 113, wherein the upper water collecting pipe 112 and the lower water collecting pipe 113 extend in the left-right direction, and the connecting pipe 114 extends in the up-down direction. A produced water outlet A is respectively provided at the left and right ends of the upper water collecting pipe 112 of each row of membrane modules 11. Alternatively, only one produced water outlet A may be provided for the upper water collecting pipe 112 of each row of membrane modules 11. When working, the submerged membrane separator is located in the membrane pool, and the raw water to be treated is introduced into the membrane pool. Impurities in the raw water to be treated are retained inside the membrane pool by the membrane element 111, and the produced water passes through the micropores of the membrane element 111 through the upper water collecting pipe 112, the produced water branch pipe 13, and the produced water main pipe 14 to the produced water pool. It should be noted that the present application does not limit the type of membrane assembly 11 and the type of membrane element 111, such as the common curtain membrane assembly, bundle membrane assembly, plate-frame membrane assembly, column membrane assembly, such as the common hollow fiber membrane element, flat membrane element, tubular membrane element.

[0038] The water production main pipe 14 is provided with a plurality of interfaces 14a, and each water production outlet A is communicated with through a water production branch pipe 13 and an interface 14a. In the illustrated embodiment, a water production main pipe 14 is provided on each of the left and right sides of the multi-row membrane assembly 11, and a total of two water production main pipes 14 are provided. The water production main pipe 14 is lower than the water production outlet A, and is preferably 200mm-400mm lower than the water production outlet A. The water production main pipe 14 extends in the front-to-back direction, and each water production main pipe 14 is provided with a plurality of interfaces 14a in sequence in the front-to-back direction. The water production branch pipe 13 connected to the water production outlet A at the left end is connected to the corresponding interface 14a on the water production main pipe 14 on the left side, and the water production branch pipe 13 connected to the water production outlet A at the right end is connected to the corresponding interface 14a on the water production main pipe 14 on the right side. The water production main pipe 14 of the additional submerged membrane separator can be connected to the water production main pipe 14 of the original submerged membrane separator in the membrane pool to realize the series connection of multiple groups of submerged membrane separators.

[0039] The support limit portion 16 is provided with multiple rows of slots, and each row of membrane assemblies 11 is respectively inserted in a row of slots. The pressing member 161a can be removed from the side wall of the membrane pool. After the pressing member 161a is removed, the membrane assembly 11 can be moved upward to pull the membrane assembly 11 out of the slot, and the newly added membrane assembly 11 can be moved downward to insert the newly added membrane assembly 11 into the slot. In other words, after the pressing member 161a is removed, the membrane assembly 11 can be freely inserted and pulled up and down. The submerged membrane separator has a non-full load use state and a full load use state. In the non-full load use state, some interfaces are blocked by plugs, and membrane assemblies are not inserted in some slots. In the full load use state, each interface 14a is connected through a water production branch pipe 13 and a water production outlet A, and a row of membrane assemblies 11 are inserted in each row of slots.

[0040] The number of membrane components integrated inside the membrane separator of the conventional integral support and limiting structure is fixed and cannot be expanded.

[0041] The submerged membrane separator provided in the present application can adapt to different water treatment volume requirements by expanding or reducing the number of membrane components 11 of the submerged membrane separator after the pressure piece 161a is removed, because the membrane component 11 can be freely inserted and pulled out up and down. For example, when the water treatment volume increases, a new membrane component 11 can be added to the currently idle slot of the submerged membrane separator, and then the plug blocking the currently idle interface is removed, and the water production outlet A of the newly added membrane component 11 is connected to the currently idle interface 14a. When the water treatment volume decreases, some of the membrane components 11 can be pulled out of the slots of the submerged membrane separator, and then the currently idle interface 14a is blocked with a plug.

[0042] In some embodiments, such as Figure 6-Figure 9 As shown, a flow channel is provided inside the support member 162a. The support member 162a is provided with an air source interface D for connecting an external air source. The submerged membrane separator includes an aeration pipeline 17, and the aeration pipeline 17 is located below the membrane assembly 11. The aeration pipeline 17 is communicated with the internal flow channel of the support member 162a, and can be specifically threadedly connected with the support member 162a so that the aeration pipeline 17 can be removed from the support member 162a. In this design, the support member 162a serves as a supporting structure for supporting the membrane assembly 11, and also as a diversion structure to distribute the introduced external gas to each aeration pipeline 17, and also as a supporting structure for the aeration pipeline 17, which is a multi-purpose object and is more conducive to reducing the weight of the lower module 162, making the installation of the lower module 162 easier and faster. The aeration pipeline 17 is provided with an aeration hole. In the illustrated embodiment, the aeration pipeline 17 is a trough structure with an open bottom, and the aeration hole is arranged on the side wall of the trough structure. The aeration pipeline of this structure is not easy to be blocked.

[0043] In some embodiments, when the support and limit portion 16 includes an upper module 161 and a lower module 162, each row of slots includes an upper slot E and a lower slot F that are vertically aligned. The upper slot E is provided in the upper module 161, and the lower slot F is provided in the lower module 162. The upper slot E and the lower slot F limit the upper and lower portions of the membrane module 11 respectively, preventing the membrane module 11 from tilting and colliding with adjacent membrane modules 11, which may affect the water treatment quality.

[0044] In some embodiments, as Figure 3-Figure 5 shown, the upper module 161 includes an upper connecting member 161b. The upper connecting member 161b is installed on the left or right side of the membrane module 11, and the upper slot E is provided on the side of the upper connecting member 161b close to the membrane module 11. Specifically, in the illustrated embodiment, an upper connecting member 161b is provided on each of the left and right sides of the membrane module 11. The upper slot E is provided on the right side of the upper connecting member 161b on the left side, and the upper slot is provided on the left side of the upper connecting member 161b on the right side. Specifically, in the illustrated embodiment, the upper slot E is lower than the water production outlet A of the water production branch pipe 13, and it is preferably 50 mm - 100 mm lower than the water production outlet A, so as not to interfere with the connection between the water production branch pipe 13 and the upper water collecting pipe 112.

[0045] In some embodiments, as Figure 6-Figure 9 shown, the lower module 162 includes a lower connecting member 162b and lower legs 162c. The support member 162a has a frame structure. The lower connecting member 162b is installed inside the frame opening of the support member 162a, and the lower slot F is provided on the upper side of the lower connecting member 162b. The lower connecting member 162b and the support member 162a support the membrane module 11 upward together. The lower legs 162c are connected below the lower connecting member 162b to support the lower connecting member 162b and the support member 162a. In the illustrated embodiment, the support member 162a has a "day" - shaped frame structure, and its four frame edges and the middle cross - beam all support the membrane module 11 upward. Two lower connecting members 162b are provided on each of the opposite sides of the support member 162a, and two lower legs 162c are provided at each of the opposite ends of each lower connecting member 162b. The four lower legs 162c are approximately located at the four corner positions of the "day" - shaped frame.

[0046] In some embodiments, as Fig.10As shown, each water production outlet A is respectively connected to a first adapter 12, and each first adapter 12 is respectively detachably connected to the first port of a water production branch pipe 13. The membrane assembly 11 needs to be disassembled for cleaning, maintenance and other operations regularly. When disassembling the membrane assembly 11, since each water production outlet A of the membrane assembly 11 is respectively connected to a first adapter 12, and each first adapter 12 is respectively detachably connected to the first port of a water production branch pipe 13, the connection between the membrane assembly 11 and the water production branch pipe 13 can be disconnected by separating the first adapter 12 from the first port of the water production branch pipe 13. Correspondingly, when assembling the membrane assembly 11, the connection between the membrane assembly 11 and the water production branch pipe 13 can be restored by combining the first adapter 12 with the first port of the water production branch pipe 13. The separation and combination process of the first adapter 12 and the first port of the water production branch pipe 13 will not cause wear to the water production outlet A of the membrane assembly 11, so the damage to the membrane assembly 11 during the process of disassembling and assembling the membrane assembly 11 can be reduced. Moreover, after the connection between the membrane assembly 11 and the water production branch pipe 13 is disconnected, the membrane assembly 11 can be removed alone without removing it together with the water production branch pipe 13. If the water production branch pipe 13 is removed together, the disassembly weight will increase, and sometimes the disassembled water production branch pipe 13 and membrane assembly 11 need to be disassembled again, which will increase the labor intensity of the disassembly workers. Therefore, this design also reduces the labor intensity of the disassembly workers.

[0047] When disassembling the membrane assembly 11, first remove the pressing piece 17 and disconnect the connection between the membrane assembly 11 and the water production branch pipe 13, and then move the membrane assembly 11 upward to make it leave the slot from the upper notch; when assembling the membrane assembly 11, first move the membrane assembly 11 downward to insert it into the slot from the upper notch, and then assemble the pressing piece 17 back and restore the connection between the membrane assembly 11 and the water production branch pipe 13; the disassembly and assembly process of the membrane assembly 11 does not require the use of lifting equipment and can be completed manually.

[0048] In some embodiments, the first port of the water production branch pipe 13 is arranged to face left or right, the water production outlet A is also arranged to face left or right, and the two ends of the first adapter 12 are respectively plugged with the first port of the corresponding water production branch pipe 13 and the water production outlet A in the left and right directions, and the water production branch pipe 13 is a flexible pipe. With such a design, when disassembling the membrane assembly 11, the connection between the first port of the water production branch pipe 13 and the first adapter 12 can be disconnected by pulling the water production branch pipe 13 horizontally to the left or right. In this way, the process of disconnecting the connection between the first port of the water production branch pipe 13 and the first adapter 12 does not require the membrane assembly 11 to move upward, so the total distance that the membrane assembly 11 needs to move upward during the process of disassembling the membrane assembly 11 can be shortened, so that there is no need to reserve a large space above the membrane pool, which is conducive to the compactness of the entire water treatment equipment.

[0049] In some embodiments, in combination Figure 2 and Fig.10 As shown, the water production branch pipe 13 is a flexible pipe, one end of the first adapter 12 passes through the first port and is inserted into the water production branch pipe 13, and a detachable first clamp 18 is provided outside the water production branch pipe 13 to clamp the water production branch pipe 13 and the first adapter 12. In this design, under the clamping action of the first clamp 18, the flexible water production branch pipe 13 and the first adapter 12 are in close contact to achieve sealing, thereby avoiding leakage at the connection between the water production branch pipe 13 and the first adapter 12, and after removing the first clamp 18, the first adapter 12 can be easily removed from the water production branch pipe 13, thereby facilitating the disassembly of the membrane assembly 11. Specifically, in the illustrated embodiment, the two ends of the first clamp 18 are connected by threaded fasteners, and the first clamp 18 is tightened or loosened by screwing the threaded fasteners. Specifically, in the illustrated embodiment, Fig.12 As shown, the outer circumferential surface of the portion of the first adapter 12 inserted into the water production branch pipe 13 is provided with a first cylindrical surface, a conical surface and a second cylindrical surface in sequence, the small diameter end of the conical surface is close to the first cylindrical surface, the large diameter end of the conical surface is close to the second cylindrical surface, and the diameter of the large diameter end of the conical surface is larger than the diameter of the first cylindrical surface and also larger than the diameter of the second cylindrical surface, so that the connection stability and sealing of the water production branch pipe 13 and the first adapter 12 can be improved.

[0050] In some embodiments, the other end of the first adapter 12 passes through the water outlet A and is inserted into the upper water collecting pipe 112, and a sealing ring is provided between the first adapter 12 and the upper water collecting pipe 112 for sealing to prevent leakage at the connection between the first adapter 12 and the upper water collecting pipe 112. At the same time, the sealing ring also plays a friction-reducing role to prevent damage to the water outlet A when assembling the first adapter 12 and the upper water collecting pipe 112. Specifically, in the illustrated embodiment, Figure 2 As shown, the upper water collecting pipe 112 is provided with a cylindrical hole 112a, and one end of the cylindrical hole 112a is the water production outlet A. Fig.12 As shown, the outer circumferential surface of the portion of the first adapter 12 inserted into the upper water collecting pipe 112 is a cylindrical surface adapted to the cylindrical hole 112a, and three sealing grooves for installing sealing rings are provided on the cylindrical surface.

[0051] In some embodiments, such as Fig.12 As shown, an intermediate section is provided between the portion of the first adapter 12 inserted into the upper water collecting pipe 112 and the portion inserted into the water producing branch pipe 13, and a first limiting surface B and a second limiting surface C are respectively provided at both ends of the intermediate section. The first limiting surface B abuts against an end surface of the upper water collecting pipe 112 to limit the depth of the first adapter 12 inserted into the upper water collecting pipe 112, and the second limiting surface C abuts against an end surface of the water producing branch pipe 13 to limit the depth of the first adapter 12 inserted into the water producing branch pipe 13.

[0052] In some embodiments, such as Fig.11As shown, the second port of each water production branch pipe 13 is detachably connected to a second adapter 15, and is connected to the corresponding interface 14a through the second adapter 15. This design facilitates the replacement of the water production branch pipe 13. Specifically, in the illustrated embodiment, one end of the second adapter 15 passes through the second port of the water production branch pipe 13 and extends into the water production branch pipe 13, and a detachable second clamp 19 is provided outside the water production branch pipe 13 to clamp the water production branch pipe 13 and the second adapter 15. In this design, under the clamping action of the second clamp 19, the flexible water production branch pipe 13 and the second adapter 15 are in close contact to achieve sealing, avoiding leakage at the connection between the water production branch pipe 13 and the second adapter 15, and after removing the second clamp 19, the second adapter 15 can be easily removed from the water production branch pipe 13, thereby facilitating the replacement of the water production branch pipe 13. Specifically, in the illustrated embodiment, the two ends of the second clamp 19 are connected by threaded fasteners, and the second clamp 19 is tightened or loosened by screwing the threaded fasteners. The structure of the portion of the second adapter 15 inserted into the water production branch pipe 13 can be designed to be the same as the portion of the first adapter 12 inserted into the water production branch pipe 13. The second adapter 15 and the water production main pipe 14 can be welded.

[0053] In some embodiments, the arrangement spacing between adjacent membrane components 11 is 50 mm to 100 mm. In this way, the membrane separation effect can be guaranteed and the friction between the membrane components 11 and the adjacent membrane components 11 can be avoided when the membrane components 11 move up and down.

[0054] In some embodiments, the vertical height of the membrane assembly 11 is not greater than 2000 mm. The left-right width of the membrane assembly 11 is not greater than 1500 mm, and more preferably not greater than 850 mm. In this way, the weight of a single-row membrane assembly 11 is not too large, and it is convenient to manually move the membrane assembly 11 up and down.

[0055] In some embodiments, the front-to-back width of the slot is 5 mm-10 mm greater than the front-to-back thickness of the membrane assembly 11 , which serves as a limit and ensures that the membrane assembly 11 is easily inserted into the slot.

[0056] In some embodiments, the produced water branch pipes 13 and the produced water main pipe 14 on the left and right sides of the membrane assembly 11 are symmetrical.

[0057] The above embodiments can be freely combined without conflict.

[0058] The above specific examples are used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the present application.

Claims

1. A submerged membrane separator, characterized in that: The submerged membrane separator comprises a membrane assembly (11) and a supporting and limiting portion (16); the supporting and limiting portion (16) comprises an upper module (161) and a lower module (162); the upper module (161) and the lower module (162) are independent of each other; the upper module (161) comprises a pressing member (161a); the pressing member (161a) presses the membrane assembly (11) downward; the lower module (162) comprises a supporting member (162a); the supporting member (162a) is installed below the membrane assembly (11); the supporting member (162a) supports the membrane assembly (11) upward; in a use state, the upper module (161) is connected to the side wall of a membrane pool where the submerged membrane separator is located.

2. The submerged membrane separator according to claim 1, characterized in that: The support member (162a) is provided with a flow channel inside, and the support member (162a) is provided with an air source interface (D) for connecting to an external air source. The submerged membrane separator comprises an aeration pipeline (17), and the aeration pipeline (17) is located below the membrane assembly (11). The aeration pipeline (17) is in communication with the internal flow channel of the support member (162a), and the aeration pipeline (17) is provided with aeration holes.

3. The submerged membrane separator according to claim 1, characterized in that: The submerged membrane separator comprises a plurality of rows of membrane assemblies (11), and also comprises a water production branch pipe (13), a water production main pipe (14) and a plug (21); each row of membrane assemblies (11) is provided with a water production outlet (A); the water production main pipe (14) is provided with a plurality of interfaces (14a); each of the water production outlets (A) is connected to one of the water production branch pipes (13) and one of the interfaces (14a); the supporting and limiting portion (16) is provided with a plurality of rows of slots; each row of membrane assemblies (11) is respectively inserted into a row of the slots; the pressing member (161a) is removable; the pressing member (161a) is After the pressing piece (161a) is removed, the membrane assembly (11) can be moved upward to pull the membrane assembly (11) out of the slot. The submerged membrane separator has a non-full-load use state and a full-load use state. In the non-full-load use state, some of the interfaces (14a) are blocked by the plugs (21), and some of the slots are not equipped with the membrane assembly (11). In the full-load use state, each of the interfaces (14a) is connected to a produced water branch pipe (13) and a produced water outlet (A) respectively, and each row of the slots is equipped with a row of the membrane assemblies (11).

4. The submerged membrane separator according to claim 3, characterized in that: Each row of the slots comprises an upper slot (E) and a lower slot (F) aligned up and down, the upper slot (E) being arranged on the upper module (161), and the lower slot (F) being arranged on the lower module (162).

5. The submerged membrane separator according to claim 4, characterized in that: The upper module (161) comprises an upper connecting piece (161b), the upper connecting piece (161b) being installed on the left side or the right side of the membrane assembly (11), and the upper slot (E) being arranged on a side of the upper connecting piece (161b) close to the membrane assembly (11).

6. The submerged membrane separator according to claim 4, characterized in that: The lower module (162) comprises a lower connecting member (162b) and a lower supporting leg (162c); the supporting member (162a) is a frame structure; the lower connecting member (162b) is installed in a frame opening of the supporting member (162a); the lower slot (F) is arranged on the upper side of the lower connecting member (162b); the lower connecting member (162b) supports the membrane assembly (11) upward; and the lower supporting leg (162c) is connected to the bottom of the lower connecting member (162b) to support the lower connecting member (162b) and the supporting member (162a).

7. The submerged membrane separator according to any one of claims 1 to 6, characterized in that: Each of the produced water outlets (A) is respectively connected to one of the first adapters (12), and each of the first adapters (12) is respectively detachably connected to a first port of one of the produced water branch pipes (13).

8. The submerged membrane separator according to claim 7, characterized in that: The water production branch pipe (13) is a flexible pipe, one end of the first adapter (12) passes through the first port and is inserted into the water production branch pipe (13), and a detachable first clamp (18) is provided outside the water production branch pipe (13) to clamp the water production branch pipe (13) and the first adapter (12), one end of the first adapter (12) passes through the water production outlet (A) and is inserted into the upper water collecting pipe (112), and a sealing ring is provided between the first adapter (12) and the upper water collecting pipe (112) for sealing.

9. The submerged membrane separator according to claim 7, characterized in that: The second port of each of the water production branch pipes (13) is detachably connected to a second adapter (15) so as to be connected to the corresponding interface (14a) via the second adapter (15).

10. The submerged membrane separator according to claim 9, characterized in that: The water production branch pipe (13) is a flexible pipe, one end of the second adapter (15) passes through the second port and is inserted into the water production branch pipe (13), and a detachable second clamp (19) is provided outside the water production branch pipe (13) to clamp the water production branch pipe (13) and the second adapter (15).

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