Membrane module device limiting structure and membrane module device thereof

Abstract

The embodiment of the invention provides a membrane module device limiting structure and membrane module device equipment thereof. The membrane module device limiting structure comprises a guide rod which is arranged in membrane pool liquid and is used for mounting a guide seat of a membrane module device. The membrane module device limiting structure comprises a fixing seat, a stopping piece and a traction piece. The fixed seat is arranged on the guide rod and is higher than the guide seat; the base is provided with a fulcrum part; the stop piece can move to a first position and a second position and is movably connected to the fixed seat; when the stop piece is located at the first position, the stop piece is arranged above the guide base in a blocking mode. At the second position, the stop piece avoids the upper part of the guide seat to form a path for the guide seat to move upwards; the first end of the traction piece is connected to the stop piece, and a second end for receiving applied force is led out through the fulcrum part; when the traction piece receives pulling force, the traction piece abuts against the fulcrum part and forms traction force enabling the stopping piece to move from the first position to the second position with the fulcrum part as a fulcrum. Under the conditions of not lowering the liquid level and not entering the membrane pool, the limitation on the guide seat is realized or released; the operation is simpler and more convenient; and the efficiency is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of sewage treatment, and in particular to a membrane module limiting structure and a membrane module device thereof. Background Art

[0002] In the water treatment industry, membrane water production is becoming more and more popular, and membrane modules are being used more and more widely. With the improvement of the process, more and more membrane modules are now using intermittent pulse aerators. When the intermittent pulse aerator is inflated, it will form an air bag structure underwater to generate greater buoyancy, which will cause the membrane module to float up sometimes during aeration operation in the water, causing the connected pipes to be pulled or even damaged. Therefore, membrane modules generally have a limit device to prevent floating, so that the membrane module will not float up; the existing limit directly uses a standard locking device such as an annular clamp, a semi-circular clamp, a U-bolt, etc. to limit the membrane module directly under the guide rod.

[0003] However, due to the product characteristics of the hollow membrane module itself, the membrane module needs to be taken out regularly every year for offline cleaning or to remove various garbage between the membrane fibers and then put back into the membrane pool. The existing limit method requires first lowering the liquid level to expose the membrane module, and then the operator enters the membrane pool to manually remove the locking device. However, this method of releasing the limit has the following problems: The membrane pool is in a closed state for a long time, and there are a lot of harmful gases in it. It is easy for operators to have accidents when entering the membrane pool. There is a lot of garbage in the membrane pool, and the working environment is very bad. Lowering the liquid level in the membrane pool will bring the risk of damaging the biochemical environment of the membrane pool, which will need to be re-cultivated. There will be problems with the effluent, and it will also lead to a longer maintenance time and a waste of social resources. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present disclosure is to provide a membrane module limiting structure and a membrane module device thereof to solve the problems in the related art.

[0005] The first aspect of the present disclosure provides a membrane module limiting structure, comprising: A fixed seat, arranged on the guide rod and higher than the guide seat; provided with a fulcrum; A stopper, which can move to a first position and a second position and is movably connected to the fixing seat; wherein, in the first position, the stopper is disposed above the guide seat; and in the second position, the stopper avoids the guide seat to form a path for the guide seat to move upward; A traction member, a first end of which is connected to the stop member, and a second end of which is led out through the fulcrum portion for receiving force; when the traction member receives the pulling force, it abuts against the fulcrum portion and uses it as a fulcrum to form a traction force that causes the stop member to move from the first position to the second position.

[0006] In an embodiment of the first aspect, the movable connection is implemented as hinge or sliding.

[0007] In an embodiment of the first aspect, the membrane group limiting structure also includes a reset member, which is arranged between the fixed seat and the stop member; the reset member is elastically deformed when the stop member moves from the first position to the second position, so that when the stop member is separated from the traction member, the stop member is reset from the second position to the first position under the elastic force of the reset member.

[0008] In an embodiment of the first aspect, the end of the stop member facing away from the guide seat is hinged to the fixed seat via a rotating shaft axially parallel to the axial direction of the guide rod; the first end of the traction member is connected to the end of the stop member facing the guide seat.

[0009] In an embodiment of the first aspect, the membrane module limiting structure further includes a reset member implemented as a torsion spring, the reset member is sleeved on the rotating shaft, one end of the reset member abuts against the fixing seat, and the other end abuts against the stop member.

[0010] In an embodiment of the first aspect, the stopper is slidably coupled to the fixing seat in a direction approaching and moving away from the guide seat.

[0011] In an embodiment of the first aspect, the membrane module limiting structure further includes a reset member implemented as a spring, one end of the reset member abuts against a wall surface of the stopper facing away from the guide seat, and the other end abuts against the fixing seat.

[0012] In an embodiment of the first aspect, the stopper is arranged on the fixing seat in a position adjustable in the vertical direction.

[0013] In an embodiment of the first aspect, the stopper is slidably coupled to the rotating shaft in a rotationally restricted manner, a plurality of accommodating portions are formed on the rotating shaft along a vertical direction, and a retaining portion is provided on the stopper that can be snap-fitted with one of the accommodating portions.

[0014] A second aspect of the present disclosure provides a membrane module device, including the membrane module limiting structure. As described above, a membrane module limiting structure and a membrane module device thereof are provided in the embodiment of the present disclosure, which are guide rods arranged in the membrane pool liquid for installing the guide seat of the membrane module. The membrane module limiting structure includes a fixed seat, a stopper and a traction member. The fixed seat is arranged on the guide rod and is higher than the guide seat; a fulcrum portion is provided; the stopper can be moved to a first position and a second position and is movably connected to the fixed seat; wherein, in the first position, the stopper is blocked above the guide seat; in the second position, the stopper avoids the guide seat to form a path for the guide seat to move upward; the first end of the traction member is connected to the stopper, and the second end for receiving the force is led out through the fulcrum portion; when the traction member receives the pulling force, it abuts against the fulcrum portion and uses it as a fulcrum to form a traction force that moves the stopper from the first position to the second position. Through the above arrangement, the operator can realize or release the restriction on the guide seat without lowering the liquid level to expose the membrane module limiting structure; and the operator can also realize or release the restriction on the guide seat without entering the membrane pool. In this way, the operation is simpler and the operation efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. 1 is a schematic diagram of the overall structure of the membrane module limiting structure in the first position in the embodiment of the present disclosure; Figure 2 , which is a side view schematic diagram of the membrane module limiting structure in the first position in the embodiment of the present disclosure; Figure 3 FIG. 1 is a schematic top view of the membrane module limiting structure in the first position in the embodiment of the present disclosure; Figure 4 FIG. 1 is a schematic diagram of the overall structure of the membrane module limiting structure in the second position in the embodiment of the present disclosure; Figure 5 FIG. 1 is a schematic top view of the membrane module limiting structure in the second position in the embodiment of the present disclosure; Figure 6 FIG. 1 is a top view schematically showing another embodiment in which the membrane module limiting structure is in the first position according to the embodiment of the present disclosure; Figure 7 FIG. 1 is a top view schematically showing another embodiment of the membrane module limiting structure in the first position according to the embodiment of the present disclosure; Figure 8 The embodiment of the present disclosure is shown in Figure 7 Schematic cross-sectional view of AA. DETAILED DESCRIPTION

[0016] The following is an explanation of the embodiments of the present disclosure by specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the information disclosed by the present disclosure. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in the present disclosure can also be modified or changed in various ways according to different viewpoints and application modules without departing from the spirit of the present disclosure. It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0017] The following is a detailed description of the embodiments of the present disclosure with reference to the accompanying drawings so that those skilled in the art can easily implement the present disclosure. The present disclosure can be embodied in many different forms and is not limited to the embodiments described herein.

[0018] In the representations of the present disclosure, the reference terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" and the like mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. Moreover, the specific features, structures, materials or characteristics represented may be combined in any one or a group of embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples represented in the present disclosure and the features of different embodiments or examples, unless they are mutually contradictory.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the representation of the present disclosure, "a group" means two or more, unless otherwise clearly and specifically defined.

[0020] In order to clearly describe the present disclosure, components not related to the description are omitted, and the same reference numerals are given to the same or similar components throughout the specification.

[0021] Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other elements therebetween. In addition, when a device is said to "include" a certain component, unless otherwise stated, it does not exclude other components, but means that other components may be included.

[0022] Although the terms first, second, etc. are used to represent various elements in this article in some examples, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, the first interface and the second interface, etc. are represented. Moreover, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising" and "including" indicate that there are the described features, steps, operations, elements, modules, projects, kinds, and / or groups, but do not exclude the existence, occurrence or addition of one or a group of other features, steps, operations, elements, modules, projects, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Only when the combination of elements, functions, steps or operations is inherently mutually exclusive in some way, will there be an exception to this definition.

[0023] The technical terms used herein are only used to refer to specific embodiments and are not intended to limit the present disclosure. The singular form used herein also includes the plural form unless the sentence clearly indicates the contrary meaning. The meaning of "including" used in the specification is to specify specific characteristics, regions, integers, steps, operations, elements and / or components, and does not exclude the existence or addition of other characteristics, regions, integers, steps, operations, elements and / or components.

[0024] Although not defined differently, all terms, including technical and scientific terms used herein, have the same meaning as those generally understood by those skilled in the art to which the present disclosure belongs. Terms defined in commonly used dictionaries are additionally interpreted as having meanings consistent with relevant technical literature and the message of the present disclosure, and shall not be overly interpreted as ideal or very formal meanings unless defined.

[0025] In the water treatment industry, membrane water production is becoming more and more popular, and membrane modules are being used more and more widely. With the improvement of the process, more and more membrane modules are now using intermittent pulse aerators. When the intermittent pulse aerator is inflated, it will form an air bag structure underwater to generate greater buoyancy, which will cause the membrane module to float up sometimes during aeration operation in the water, causing the connected pipes to be pulled or even damaged. Therefore, membrane modules generally have a limit device to prevent floating, so that the membrane module will not float up; the existing limit directly uses a standard locking device such as an annular clamp, a semi-circular clamp, a U-bolt, etc. to limit the membrane module directly under the guide rod.

[0026] However, due to the product characteristics of the hollow membrane module itself, the membrane module needs to be taken out regularly every year for offline cleaning or to remove various garbage between the membrane fibers and then put back into the membrane pool. The existing limit method requires first lowering the liquid level to expose the membrane module, and then the operator enters the membrane pool to manually remove the locking device. However, this method of releasing the limit has the following problems: The membrane pool is in a closed state for a long time, and there are a lot of harmful gases in it. It is easy for operators to have accidents when entering the membrane pool. There is a lot of garbage in the membrane pool, and the working environment is very bad. Lowering the liquid level in the membrane pool will bring the risk of damaging the biochemical environment of the membrane pool, which will need to be re-cultivated. There will be problems with the effluent, and it will also lead to a longer maintenance time and a waste of social resources.

[0027] Based on the above problems, the embodiment of the present disclosure provides a membrane module limiting structure, which is provided in the membrane pool liquid and is used to install the guide rod of the guide seat of the membrane module. The operator can implement or release the restriction of the guide seat without lowering the liquid level to expose the membrane module limiting structure; at the same time, the operator can also implement or release the restriction of the guide seat without entering the membrane pool. In this way, the operation is simpler and the operation efficiency is improved.

[0028] Figure 1 ] is a schematic diagram of the overall structure of the membrane module limiting structure in the first position in the embodiment of the present disclosure. Figure 2 ] is a side view schematic diagram of the membrane module limiting structure in the first position in the embodiment of the present disclosure. Figure 3 ] is a top view schematic diagram of the membrane module limiting structure in the first position in the embodiment of the present disclosure. Figure 4 FIG. 1 is a schematic diagram of the overall structure of the membrane module limiting structure in the second position in the embodiment of the present disclosure; Figure 5 ] is a top view schematic diagram of the membrane module limiting structure in the second position in the embodiment of the present disclosure.

[0029] exist Figure 1 , 2 , 3, 4 and Figure 5 In the example, the membrane module limiting structure includes a fixed seat 10, a stopper 20 and a traction member 30. The fixed seat 10 is arranged on the guide rod 70 and is higher than the guide seat 60; a fulcrum portion 11 is provided. The stopper 20 is movably connected to the fixed seat 10 so as to be movable to a first position and a second position; wherein, in the first position, the stopper 20 is blocked above the guide seat 60; in the second position, the stopper 20 avoids the guide seat 60 to form a path for the guide seat 60 to move upward.

[0030] The first end 31 of the traction member 30 is connected to the stop member 20, and is led out through the fulcrum portion 11 to the second end 32 for receiving the force; when the traction member 30 receives the pulling force, it abuts against the fulcrum portion 11 and uses it as a fulcrum to form a traction force that causes the stop member 20 to move from the first position to the second position.

[0031] Through the above arrangement, the operator can realize or release the restriction on the guide seat 60 without lowering the liquid level to expose the membrane module limiting structure; at the same time, the operator can realize or release the restriction on the guide seat 60 without entering the membrane tank. In this way, the operation is more convenient and the operation efficiency is improved.

[0032] Exemplarily, the movable connection is implemented as hinge or sliding. Exemplarily, the membrane module limiting structure further includes a reset member 50, which is arranged between the fixing seat 10 and the stop member 20; the reset member 50 is elastically deformed when the stop member 20 moves from the first position to the second position, so that when the stop member 20 is pulled away from the traction member 30, the stop member 20 is reset from the second position to the first position under the elastic force of the reset member 50.

[0033] The active connection method is implemented as one of the following embodiments.

[0034] exist Figure 1 In the example, the end of the stopper 20 facing away from the guide seat 60 is hinged to the fixed seat 10 via a rotating shaft 40 whose axial direction is parallel to the axial direction of the guide rod 70; the first end 31 of the traction member 30 is connected to the end of the stopper 20 facing the guide seat 60. The fulcrum 11 is implemented as a guide ring and is arranged at the end of the fixed seat 10 facing away from the guide seat 60, and the second end 32 of the traction member 30 passes through the guide ring. Exemplarily, a fixed arm 12 whose length direction is perpendicular to the length direction of the fixed seat 10 is provided on the fixed seat 10, and the guide ring is arranged at the end of the fixed arm 12 away from the fixed seat 10. In this embodiment, the fixed arm 12 is arranged at the top of the fixed seat 10, and correspondingly, the first end 31 of the traction member 30 is connected to the top of the stopper 20, so that the traction member 30 can pull the stopper 20 more smoothly. In another embodiment, the fixing arm 12 may also be disposed at the middle or bottom of the fixing base 10 , and correspondingly, the first end 31 of the pulling member 30 is connected to the middle or bottom of the stopping member 20 .

[0035] Through the above arrangement, the efficiency of the stopper 20 swinging from the first position to the second position can be improved by changing the pulling direction of the traction member 30 on the stopper 20. In another embodiment, the fixing arm 12 and the fixing seat 10 can also be integrally formed to improve the overall strength of the fixing seat 10 and the fixing arm 12 and improve durability.

[0036] In this way, by pulling the second end 32 of the pulling member 30, the pulling member 30 uses the fulcrum portion 11 as a fulcrum to pull the end of the stopper 20 toward the guide seat 60, so that the end of the stopper 20 toward the guide seat 60 swings to the second position with the rotating shaft 40 as the center, so as to avoid the upper part of the guide seat 60 to form a path for the guide seat 60 to move upward. In this way, the restriction on the floating of the guide seat 60 is released. The guide seat 60 can drive the membrane module to float above the liquid surface along the guide rod 70 for easy cleaning and maintenance.

[0037] In this embodiment, the fixing seat 10 is welded closely to the outer wall surface of the guide rod 70, so the fixing seat 10 can withstand the large buoyancy of the module without being separated from the guide rod 70. At the same time, the fixing seat 10 and the stopper 20 are implemented as a U-shaped cross-sectional contour line, which strengthens the overall strength of the fixing seat 10 and the stopper 20, and prevents the fixing seat 10 and the stopper 20 from being deformed due to the upward buoyancy of the membrane module, so that the fixing seat 10 and the stopper 20 maintain a limited state of the membrane module.

[0038] exist Figure 1 In the example, the reset member 50 is implemented as a torsion spring and is sleeved on the rotating shaft 40, and one end of the reset member 50 abuts against the fixing seat 10, and the other end abuts against the stop member 20. It can be understood by those skilled in the art that when the stop member 20 swings from the first position to the second position, the reset member 50 implemented as a torsion spring is twisted and has an elastic deformation force, so when the stop member 20 is not pulled by the traction member 30, the stop member 20 swings from the second position to the first position again under the elastic force of the reset member 50, and the floating restriction of the guide seat 60 is realized again.

[0039] Figure 6 The figure is a top view schematic diagram of another embodiment of the present disclosure in which the membrane module limiting structure is in the first position. Figure 6In the example, the stopper 20A is slidably coupled to the fixed seat 10A in the direction approaching and moving away from the guide seat 60. Exemplarily, the fixed seat 10A is provided with a slide bar 13 extending in the direction approaching and moving away from the guide seat 60 and having a rectangular cross section, and the stopper 20A is slidably coupled to the slide bar 13. The fulcrum portion 11A is implemented as a guide hole and is formed at the end of the fixed seat 10A facing away from the guide seat 60, and the second end 32 of the traction member 30 passes through the guide hole. In this way, by pulling the second end 32 of the traction member 30, the traction member 30 pulls the stopper 20A with the fulcrum portion 11A as a fulcrum, so that the stopper 20A moves along the slide bar 13 to the second position to avoid the top of the guide seat 60 to form a path for the guide seat 60 to move upward. Thereby, the restriction on the floating of the guide seat 60 is released. The guide seat 60 can drive the membrane module to float above the liquid surface along the guide rod 70 for easy cleaning and maintenance.

[0040] exist Figure 6 In the example, the reset member 50A is implemented as a spring and one end abuts against the fixed seat 10A, and the other end abuts against the stop member 20A. It can be understood by those skilled in the art that when the stop member 20A slides from the first position to the second position, the reset member 50A implemented as a spring is compressed and has an elastic deformation force, so when the stop member 20A is not pulled by the traction member 30, the stop member 20A slides from the second position to the first position again under the elastic force of the reset member 50A, so as to re-realize the restriction on the floating of the guide seat 60.

[0041] exist Figure 6 In the example, the reset member 50A can also be implemented as a spring sheet, one end of which is connected to the end of the stopper 20A facing away from the guide seat 60, and the other end of which is connected to the fixing seat 10A. For example, the traction member 30 is implemented as a steel wire rope or a nylon rope.

[0042] Figure 7 ] is a top view schematic diagram of another embodiment of the membrane module limiting structure in the first position in the embodiment of the present disclosure. Figure 8 The embodiment of the present disclosure is shown in Figure 7 Schematic cross-sectional view of AA in FIG. 1 . Exemplarily, the stopper 20B is arranged on the fixing seat 10B in an adjustable manner in the vertical direction. Figure 7 and Figure 8In the example, the rotating shaft 40B is hinged to the fixed seat 10B, and the stopper 20B is slidably coupled to the rotating shaft 40B in a limited rotation manner. For example, the rotating shaft 40B is implemented as a rectangular cross section. The side wall of the rotating shaft 40B is formed with a plurality of accommodating portions 41 in the vertical direction, and the stopper 20 is provided with a clamping portion 21 that can be snapped into one of the accommodating portions 41. Exemplarily, the accommodating portion 41 is implemented as a threaded hole, and the clamping portion 21 is implemented as a screw rod with one end that can be screwed into the threaded hole. Through the above arrangement, the operator can adjust the height of the stopper 20B on the guide rod 70 by snapping the clamping portion 21 into the accommodating portions 41 at different heights, so that the module mounted at different heights on the guide rod 70 can be limited from floating upward, thereby improving the applicability of the module limiting structure.

[0043] Yet another embodiment of the present disclosure provides a membrane module device, including the membrane module limiting structure.

[0044] In summary, a membrane module limiting structure and a membrane module device thereof are provided in the embodiments of the present disclosure, which are guide rods arranged in the membrane pool liquid for installing the guide seat of the membrane module. The membrane module limiting structure includes a fixed seat, a stopper and a traction member. The fixed seat is arranged on the guide rod and is higher than the guide seat; a fulcrum portion is provided; the stopper can be moved to a first position and a second position and is movably connected to the fixed seat; wherein, in the first position, the stopper is arranged above the guide seat; in the second position, the stopper avoids the guide seat to form a path for the guide seat to move upward; the first end of the traction member is connected to the stopper, and the second end for receiving the force is led out through the fulcrum portion; when the traction member receives the pulling force, it abuts against the fulcrum portion and uses it as a fulcrum to form a traction force that causes the stopper to move from the first position to the second position. Through the above arrangement, the operator can realize or release the restriction on the guide seat without lowering the liquid level to expose the membrane module limiting structure; and the operator can also realize or release the restriction on the guide seat without entering the membrane pool. In this way, the operation is simpler and the operation efficiency is improved.

[0045] The above embodiments are merely illustrative of the principles and effects of the present disclosure, and are not intended to limit the present disclosure. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present disclosure. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present disclosure shall still be covered by the protection scope of the present disclosure.

Claims

1. A membrane module limiting structure, characterized in that: The guide rod of the guide seat for installing the membrane module in the membrane pool liquid includes: A fixed seat, arranged on the guide rod and higher than the guide seat; provided with a fulcrum; A stopper, which can move to a first position and a second position and is movably connected to the fixing seat; wherein, in the first position, the stopper is disposed above the guide seat; and in the second position, the stopper avoids the guide seat to form a path for the guide seat to move upward; A traction member, a first end of which is connected to the stop member, and a second end of which is led out through the fulcrum portion for receiving force; when the traction member receives the pulling force, it abuts against the fulcrum portion and uses it as a fulcrum to form a traction force that causes the stop member to move from the first position to the second position.

2. The membrane module limiting structure according to claim 1, characterized in that: The movable connection is implemented as hinge or sliding.

3. The membrane module limiting structure according to claim 1, characterized in that: The membrane group limiting structure also includes a reset member, which is arranged between the fixed seat and the stop member; the reset member is elastically deformed when the stop member moves from the first position to the second position, so that when the stop member is separated from the traction member, the stop member is reset from the second position to the first position under the elastic force of the reset member.

4. The membrane module limiting structure according to claim 1, characterized in that: The end of the stopper facing away from the guide seat is hinged to the fixed seat via a rotating shaft whose axial direction is parallel to the axial direction of the guide rod; the first end of the traction member is connected to the end of the stopper facing the guide seat.

5. The membrane module limiting structure according to claim 4 is characterized in that: The membrane module limiting structure further includes a reset member implemented as a torsion spring, which is sleeved on the rotating shaft, with one end of the reset member abutting against the fixing seat and the other end abutting against the stopper.

6. The membrane module limiting structure according to claim 1, characterized in that: The stopper is slidably coupled to the fixing seat in a direction approaching and moving away from the guide seat.

7. The membrane module limiting structure according to claim 6, characterized in that: The membrane module limiting structure further includes a reset member implemented as a spring, one end of the reset member abuts against the wall surface of the stopper facing away from the guide seat, and the other end abuts against the fixing seat.

8. The membrane module limiting structure according to claim 4, characterized in that: The stopper is arranged on the fixing seat in an adjustable manner in the vertical direction.

9. The membrane module limiting structure according to claim 8, characterized in that: The stopper is slidably coupled to the rotating shaft in a rotationally restricted manner. The rotating shaft is formed with a plurality of accommodating portions along a vertical direction. The stopper is provided with a holding portion that can be snap-fitted with one of the accommodating portions.

10. A membrane module device, characterized in that: include: The membrane module limiting structure according to any one of claims 1 to 9.

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