CN219023918U - Flexible flat membrane element - Google Patents

Abstract

The utility model relates to the technical field of flat membrane elements, in particular to a flexible flat membrane element; the flexible membrane comprises a flexible membrane with a water channel, wherein a membrane frame is arranged on the periphery of the outer edge of the flexible membrane, a flexible membrane slot is arranged on the periphery of the inner side surface of the membrane frame, the outer edge of the flexible membrane is in sealing and inserting connection with the flexible membrane slot, a water producing port is arranged at the top of the membrane frame, a communicated water channel is arranged on the periphery of the inner part of the membrane frame, and the flexible membrane slot and the water producing port are both communicated with the water channel; through the structural design of flexible flat membrane element in order to solve the traditional flat membrane element that exists among the prior art produce the mouth of a river only has one or two, leads to the play water inhomogeneous, and rigidity is strong simultaneously, can not take place the swing under the aeration effect, and the membrane face easily produces the technical problem of mud caking.

Description

Flexible flat membrane element

Technical Field

The utility model relates to the technical field of flat membrane elements, in particular to a flexible flat membrane element.

Background

The membrane reactor refers to a novel water treatment technology which combines a membrane separation unit and a biological treatment unit. The technology replaces a traditional biological treatment technology end secondary sedimentation tank with a membrane element, maintains high activated sludge concentration in a biological reactor, improves biological treatment organic load, reduces occupied area of sewage treatment facilities, and reduces residual sludge amount by maintaining low sludge load.

The traditional flat membrane element applied to the membrane bioreactor mainly comprises two flat membrane sheets, a diversion cloth and a reinforcing support plate, wherein one or two water producing ports are reserved in the reinforcing support plate, the membrane sheets and the diversion cloth are welded to the support plate through ultrasonic waves, and the diversion cloth is positioned between the membrane sheets and the support plate and mainly used for increasing more uniform circulation of filtrate in the membrane element. The support plate is generally a solid ABS plate, the thickness of the plate is 6-8mm, and the weight is large. The above-mentioned shortcomings of conventional flat sheet membrane elements are mainly manifested in: 1) Only one or two water producing ports of the element cause uneven water outlet, and more water is discharged from the membrane close to the water producing ports; 2) The traditional flat membrane element does not swing under the aeration action due to the reinforced supporting plate, and the membrane surface is easy to generate sludge caking; 3) The ABS support plate in the traditional flat membrane element has higher manufacturing cost and increases the element cost. Furthermore, patent CN110479105a discloses a flexible flat membrane element, the membrane element comprises a filtering membrane, a water outlet channel and a flexible flow guide net, the flexible flow guide net is used between the two filtering membranes, the membrane is fixed and sealed by sealant or ultrasonic welding, the upper end and the lower end of the membrane element are both water outlet channels, the fixing mode of the membrane element is that a groove is directly cut out of a suction water pipe of a self-priming pump, the membrane element is clamped into a clamping groove and then fixed by sealant, the membrane element is perpendicular to the suction water pipe, the stiffness only depends on the stiffness of the membrane element, under the action of aeration, the deformation of the element is large, the adjacent membrane is easy to be attached, the requirement on the fixing mode of the element is high, the two ends of produced water are sealed only by adhesive, and under the action of aeration, the membrane has the risk of falling out of the glue; limited to producing water from the upper end surface and the lower end surface, and can not realize the simultaneous production of water from four ends.

Accordingly, there is an urgent need in the present utility model to provide a flexible flat membrane element in view of the above problems.

Disclosure of Invention

The utility model aims to provide a flexible flat membrane element, which solves the technical problems that in the prior art, only one or two water outlets of the traditional flat membrane element exist, so that water is not uniform, meanwhile, the rigidity is high, swing cannot occur under the action of aeration, and sludge caking is easy to occur on the membrane surface.

The utility model provides a flexible flat membrane element, which comprises a flexible membrane with a water channel, wherein a membrane frame is arranged on the periphery of the outer edge of the flexible membrane, a flexible membrane slot is arranged on the periphery of the inner side surface of the membrane frame, the outer edge of the flexible membrane is in sealed and inserted connection with the flexible membrane slot, a water producing port is arranged at the top of the membrane frame, a communicated water channel is arranged on the periphery of the inner part of the membrane frame, and the flexible membrane slot and the water producing port are both communicated with the water channel.

Further, the film frame comprises an upper film frame, a lower film frame and two side film frames, wherein two ends of the upper film frame are detachably connected with the top ends of the corresponding side film frames through connecting pieces, and two ends of the lower film frame are detachably connected with the bottom ends of the corresponding side film frames through connecting pieces;

the water flow channel comprises an upper channel which is positioned in the upper membrane frame and is distributed along the length, a side channel which is positioned in the side membrane frame and is distributed along the height, a lower channel which is positioned in the lower membrane frame and is distributed along the length, a connecting channel which is positioned in the connecting piece, and two ends of the lower channel in the lower membrane frame are communicated with the corresponding side channels in the side membrane frame through the connecting channels of the connecting piece, and two ends of the upper channel in the upper membrane frame are communicated with the corresponding side channels in the side membrane frame through the connecting channels of the corresponding connecting piece;

the water producing port is communicated with an upper channel in the upper membrane frame.

Further, the connecting piece includes the connecting block, and in the connecting block was located to the connecting channel, one side end of connecting block was equipped with the horizontal spliced pole of horizontal extension, and the horizontal spliced pole outside end was equipped with the horizontal water conservancy diversion hole with connecting channel intercommunication, and the upside end of connecting block is equipped with the side end spliced pole of upwards extending, and the outer terminal surface of side end spliced pole is equipped with the side water conservancy diversion hole with connecting channel intercommunication.

Further, an upper slot is arranged on the lower end face of the upper membrane frame along the length, the upper slot is communicated with the upper channel, upper sockets used for being connected with connecting pieces are further arranged on the left side and the right side of the upper membrane frame, each upper socket is communicated with the upper channel, and upper clamping parts used for clamping the flexible membrane are arranged on the front inner wall and the rear inner wall of the upper slot.

Further, the upper end face of the lower membrane frame is provided with a lower slot along the length, the left side and the right side of the lower membrane frame are also provided with lower sockets used for being connected with the connecting piece, each lower socket is communicated with the lower channel, and the front inner wall and the rear inner wall of the lower slot are provided with lower clamping parts used for clamping the flexible membrane.

Further, the side film frame comprises a front side plate and a rear side plate, wherein two partition plates are arranged on the front plate surface of the rear side plate at intervals along the width, a side channel is positioned between the two partition plates, a side end plug-in column of a connecting piece can be inserted between the two partition plates, a plurality of side inlets are arranged on the partition plates close to the flexible diaphragm at intervals along the height, clamping plates are arranged on the outer sides of the two partition plates respectively, mounting slots are formed in each clamping plate and the corresponding partition plate, and plug strips which are correspondingly plugged with each mounting slot are arranged on the rear side surface of the front side plate; the front side plate, the rear side plate and the clamping plate close to the flexible membrane are surrounded with side frame slots.

Further, the membrane frame is made of plastic or metal.

Further, a glue layer is arranged at the joint of the outer edge of the flexible membrane and the membrane frame.

Further, the top of the membrane frame is provided with a handle.

Further, the flexible membrane is a flat membrane, a corrugated membrane or a composite membrane.

Compared with the prior art, the flexible flat membrane element provided by the utility model has the following advantages:

1. according to the utility model, the membrane frame is arranged on the periphery of the outer edge of the flexible membrane, the flexible membrane slot is arranged on the periphery of the inner side surface of the membrane frame, the outer edge of the flexible membrane is in sealing plug-in connection with the flexible membrane slot, the water producing port is arranged at the top of the membrane frame, the communicated water flow channels are arranged on the periphery of the inner part of the membrane frame, the flexible membrane slot and the water producing port are both communicated with the water flow channels, and water in the flexible membrane with the water flow channels can be discharged through the water channel of the temporal part of the membrane automatically, enters the water flow channels of the corresponding membrane frame and is converged into the water producing port to be discharged. The water producing opening can be positioned at any position of the membrane frame and is not limited.

2. The flexible membrane is wrapped by the membrane frame, so that the rigid supporting backboard of the traditional flat membrane element is removed, the weight of the flat membrane element is reduced, and the flexible flat membrane element can swing under the action of aeration to slow down the pollution of the membrane surface.

3. The utility model comprises an upper film frame, a lower film frame and two side film frames, wherein two ends of the upper film frame are detachably connected with the top ends of the corresponding side film frames through connecting pieces; the water flow channel comprises an upper channel which is positioned in the upper membrane frame and is distributed along the length, a side channel which is positioned in the side membrane frame and is distributed along the height, a lower channel which is positioned in the lower membrane frame and is distributed along the length, a connecting channel which is positioned in the connecting piece, and two ends of the lower channel in the lower membrane frame are communicated with the corresponding side channels in the side membrane frame through the connecting channels of the connecting piece, and two ends of the upper channel in the upper membrane frame are communicated with the corresponding side channels in the side membrane frame through the connecting channels of the corresponding connecting piece; the structural design of the upper channel communication in the water producing port and the upper membrane frame can realize the disassembly connection of the module, facilitate the assembly of the flexible membrane and the membrane frame, improve the installation efficiency and have high application flexibility.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view (front view) of a flexible flat membrane element according to the present utility model;

FIG. 2 is a schematic structural view of the flexible flat membrane element of the present utility model (perspective view, with the flexible membrane sheet and membrane frame on one side removed);

FIG. 3 is an enlarged view of FIG. 2 at A;

FIG. 4 is a schematic view of the structure of the flexible flat membrane element according to the present utility model (perspective view, upper membrane frame and side membrane frame removed);

FIG. 5 is a schematic view of a flexible flat membrane element according to the present utility model (perspective view, upper membrane frame removed);

fig. 6 is an enlarged view at B in fig. 5.

Reference numerals illustrate:

1. a membrane frame; 101. a film frame is arranged; 102. a lower film frame; 103. a side film frame; 1011. an upper slot; 1012. an upper socket; 1013. an upper clamping part; 1031. a front side plate; 1032. a rear side plate; 1033. a partition plate; 1034. a side inlet; 1035. a clamping plate; 1036. installing a slot; 2. a flexible membrane; 3. a water producing port; 4. a connecting piece; 41. a connecting block; 42. a transverse plug-in column; 43. a transverse flow guiding hole; 44. a side end plug-in column; 45. a lateral flow guide hole; 5. a handle.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Only one or two water producing ports of the traditional flat membrane element cause uneven water outlet, meanwhile, the rigidity is high, swing cannot occur under the aeration effect, and the membrane surface is easy to produce the technical problem of sludge agglomeration; and the membrane element is also provided, the two ends of the produced water are sealed only by the sealant, and under the aeration effect, the membrane has the risk of falling out of the sealant and the like.

In order to solve the technical problems, as shown in fig. 1, 2, 3, 4, 5 and 6, the embodiment provides a flexible flat membrane element, which comprises a flexible membrane 2 with a water channel, wherein a membrane frame 1 is arranged on the periphery of the flexible membrane 2, a flexible membrane slot is circumferentially arranged on the inner side surface of the membrane frame 1, the outer edge of the flexible membrane 2 is in sealing and inserting connection with the flexible membrane slot, a water producing port 3 is arranged at the top of the membrane frame 1, a water channel communicated with the membrane frame 1 is circumferentially arranged in the membrane frame, and the flexible membrane slot and the water producing port 3 are both communicated with the water channel.

According to the utility model, the membrane frame 1 is arranged on the periphery of the outer edge of the flexible membrane 2, the flexible membrane slot is arranged on the periphery of the inner side surface of the membrane frame 1, the outer edge of the flexible membrane 2 is in sealing and inserting connection with the flexible membrane slot, the water producing port 3 is arranged at the top of the membrane frame 1, the inner periphery of the membrane frame 1 is provided with the communicated water flow channel, the flexible membrane slot and the water producing port 3 are both communicated with the water flow channel, and water in the flexible membrane 2 with the water flow channel can be discharged through the water flow channel of the temporal part of the membrane automatically, enters the water flow channel corresponding to the membrane frame 1 and is converged into the water producing port 3 to be discharged. The water producing opening 3 can be positioned at any position of the membrane frame 1 without limitation. The flexible membrane is wrapped by the membrane frame 1, so that the rigid supporting backboard of the traditional flat membrane element is removed, the weight of the flat membrane element is reduced, and the flexible flat membrane element can swing under the action of aeration to slow down the pollution of the membrane surface.

The material of the film frame 1 in this embodiment is plastic or metal.

As shown in fig. 1, 2, 3, 4 and 5, the film frame 1 of the present embodiment includes an upper film frame 101, a lower film frame 102 and two side film frames 103, wherein two ends of the upper film frame 101 are detachably connected with top ends of the corresponding side film frames 103 through connecting pieces 4, and two ends of the lower film frame 102 are detachably connected with bottom ends of the corresponding side film frames 103 through connecting pieces 4; the water flow channel comprises an upper channel which is positioned in the upper membrane frame 101 and is distributed along the length, a side channel which is positioned in the side membrane frame 103 and is distributed along the height, a lower channel which is positioned in the lower membrane frame 102 and is distributed along the length, a connecting channel which is positioned in the connecting piece 4, and two ends of the lower channel in the lower membrane frame 102 are communicated with the side channels in the corresponding side membrane frames 103 through the connecting channels of the connecting piece 4, and two ends of the upper channel in the upper membrane frame 101 are communicated with the side channels in the side membrane frames 103 through the connecting channels of the corresponding connecting piece 4; the water producing port 3 is communicated with an upper channel in the upper membrane frame 101.

The utility model comprises an upper film frame 101, a lower film frame 102 and two side film frames 103 through a film frame 1, wherein two ends of the upper film frame 101 are detachably connected with the top ends of the corresponding side film frames 103 through connecting pieces 4, and two ends of the lower film frame 102 are detachably connected with the bottom ends of the corresponding side film frames 103 through connecting pieces 4; the water flow channel comprises an upper channel which is positioned in the upper membrane frame 101 and is distributed along the length, a side channel which is positioned in the side membrane frame 103 and is distributed along the height, a lower channel which is positioned in the lower membrane frame 102 and is distributed along the length, a connecting channel which is positioned in the connecting piece 4, and two ends of the lower channel in the lower membrane frame 102 are communicated with the side channels in the corresponding side membrane frames 103 through the connecting channels of the connecting piece 4, and two ends of the upper channel in the upper membrane frame 101 are communicated with the side channels in the side membrane frames 103 through the connecting channels of the corresponding connecting piece 4; the structural design of the upper channel communication in the water production port 3 and the upper membrane frame 101 can realize the disassembly connection of the module 1, facilitate the assembly of the flexible membrane 2 and the membrane frame 1, improve the installation efficiency and have high application flexibility.

As shown in fig. 4, the connecting piece 4 of the present embodiment includes a connecting block 41, a connecting channel is disposed in the connecting block 41, a lateral insertion column 42 extending laterally is disposed at one side end of the connecting block 41, a lateral flow guiding hole 43 communicating with the connecting channel is disposed at an outer side end of the lateral insertion column 42, a lateral end insertion column 44 extending upwardly is disposed at an upper side end of the connecting block 41, and a lateral flow guiding hole 45 communicating with the connecting channel is disposed at an outer end face of the lateral end insertion column 44.

The utility model comprises a connecting piece 41 through a connecting piece 4, wherein a connecting channel is arranged in the connecting piece 41, one side end of the connecting piece 41 is provided with a transverse inserting column 42 which transversely extends, the outer side end of the transverse inserting column 42 is provided with a transverse guide hole 43 which is communicated with the connecting channel, the upper side end of the connecting piece 41 is provided with a side end inserting column 44 which upwardly extends, the outer end face of the side end inserting column 44 is provided with a lateral guide hole 45 which is communicated with the connecting channel, the connection of an upper membrane frame 101, a lower membrane frame 102 and two side membrane frames 103 is facilitated, and meanwhile, the water flow channels in the upper membrane frame 101, the lower membrane frame 102 and the two side membrane frames 103 are ensured to be communicated.

As shown in fig. 2 and 3, an upper slot 1011 is arranged along the length of the lower end surface of the upper film frame 101 in this embodiment, the upper slot 1011 is communicated with the upper channel, upper sockets 1012 for connecting with the connecting piece 4 are further arranged on the left and right sides of the upper film frame 101, each upper socket 1012 is communicated with the upper channel, and upper clamping parts 1013 for clamping the flexible membrane 2 are arranged on the front and rear inner walls of the upper slot 1011.

The utility model arranges the upper slot 1011 along the length of the lower end surface of the upper film frame 101, the upper slot 1011 is communicated with the upper channel, the left and right sides of the upper film frame 101 are also provided with the upper sockets 1012 used for connecting with the connecting piece 4, each upper socket 1012 is communicated with the upper channel, the front and rear inner walls of the upper slot 1011 are provided with the structural design of the upper clamping part 1013 used for clamping the flexible film 2, the upper slot 1011 is convenient for inserting the film, the upper socket 1012 is convenient for the butt joint of the connecting piece 4, the upper clamping part 1013 realizes the fixation of the film, the gap between the two upper clamping parts 1013 is smaller than or equal to the thickness of the flexible film, and the clamping fixation of the flexible film 2 is realized.

As shown in fig. 2 and 5, the upper end surface of the lower membrane frame 102 in this embodiment is provided with a lower slot along the length, the left and right sides of the lower membrane frame 102 are further provided with lower sockets for connecting with the connecting piece 4, each lower socket is communicated with the lower channel, and the front and rear inner walls of the lower slot are provided with lower clamping parts for clamping the flexible membrane 2.

According to the utility model, the upper end surface of the lower film frame 102 is provided with the lower slots along the length, the left side and the right side of the lower film frame 102 are also provided with the lower sockets for being connected with the connecting piece 4, each lower socket 2012 is communicated with the lower channel, the front inner wall and the rear inner wall of the lower slots are provided with the structural design of the lower clamping parts for clamping the flexible film 2, the bottom of the flexible film 2 is inserted into the lower slots, the lower sockets realize the butt joint with the connecting piece 4, the gap between the two lower clamping parts is smaller than or equal to the thickness of the flexible film 2, and the clamping and fixing of the flexible film 2 are realized.

As shown in fig. 5 and 6, the side film frame 103 of the present embodiment includes a front side plate 1031 and a rear side plate 1032, two partition plates 1033 are arranged on the front plate surface of the rear side plate 1032 at intervals along the width, a side channel is located between the two partition plates 1033, a side end plugging post 44 of a connecting piece 4 can be inserted between the two partition plates 1033, a plurality of side inlets 1034 are arranged on the partition plates 1033 close to the flexible membrane 2 along the height interval, and the side film frame further includes clamping plates 1035 separated outside the two partition plates 1033, each clamping plate 1035 and the corresponding partition plate 1033 are provided with mounting slots 1036, and the rear side surface of the front side plate 1031 is provided with plugging strips corresponding to each mounting slot 1036; the front plate 1031, the rear plate 1032, and the clamp plate 1035 adjacent to the flexible membrane are surrounded by side frame slots.

The side film frame 103 comprises a front side plate 1031 and a rear side plate 1032, wherein two partition plates 1033 are arranged on the front plate surface of the rear side plate 1032 at intervals along the width, side channels are arranged between the two partition plates 1033, side end plug-in posts 44 of a connecting piece 4 can be inserted between the two partition plates 1033, a plurality of side inlets 1034 are arranged on the partition plates 1033 close to the flexible membrane 2 at intervals along the height, the side film frame also comprises clamping plates 1035 which are respectively arranged on the outer sides of the two partition plates 1033, each clamping plate 1035 and a corresponding partition plate 1033 piece are provided with mounting slots 1036, the rear side surface of the front side plate 1031 is provided with a structural design of cutting which is correspondingly plugged with each mounting slot 1036, the detachable connection of the side film frame 103 is realized, the connection of the side film frame 103 and the flexible membrane is facilitated, the coating of sealing glue is also facilitated, and meanwhile, the side channels are arranged inside the side film frame, and the water is conveniently discharged.

The joint of the outer edge of the flexible membrane 2 and the membrane frame 1 is provided with a glue layer, so that the sealing effect is achieved.

The top of the membrane frame 1 is provided with the handle 5, so that the flexible flat membrane element can be conveniently taken out.

The flexible membrane 2 of the present embodiment is a flat membrane, a corrugated membrane or a composite membrane, and is not limited to the limitation of the flexible membrane.

The assembly process of the flexible flat membrane element comprises the following steps:

the top of the flexible membrane is inserted into the upper slot 1011 of the upper membrane frame 101, the bottom of the flexible membrane 2 is inserted into the lower slot of the lower membrane frame 102, the side membrane frames 103 are disassembled, two sides of the flexible membrane 2 are firstly placed on the rear side plate 1033, after the upper membrane frame 101, the rear side plate 1032 of the side membrane frame 103 and the lower membrane frame 103 are respectively connected by four connecting pieces 4, sealant is applied to the top, the bottom and the side parts of the flexible membrane, and the front side plate 1031 is buckled on the rear side plate 1032, so that the connection between the membrane frame 1 and the flexible membrane is realized.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. A flexible flat sheet membrane element, characterized by: including flexible diaphragm (2) from taking water channel, the outward flange of flexible diaphragm (2) encloses and is equipped with membrane frame (1), and the medial surface circumference of membrane frame (1) is equipped with flexible diaphragm slot, and the outward flange of flexible diaphragm (2) is sealed cartridge with flexible diaphragm slot and is connected, and membrane frame (1) top is equipped with produces mouth of a river (3), and the inside circumference of membrane frame (1) is equipped with the water channel of intercommunication, and flexible diaphragm slot and produce mouth of a river (3) all communicate with water channel.

2. The flexible flat sheet membrane element of claim 1, wherein: the film frame (1) comprises an upper film frame (101), a lower film frame (102) and two side film frames (103), wherein two ends of the upper film frame (101) are detachably connected with the top ends of the corresponding side film frames (103) through connecting pieces (4), and two ends of the lower film frame (102) are detachably connected with the bottom ends of the corresponding side film frames (103) through the connecting pieces (4);

the water flow channel comprises an upper channel which is positioned in the upper membrane frame (101) and is distributed along the length, a side channel which is positioned in the side membrane frame (103) and is distributed along the height, a lower channel which is positioned in the lower membrane frame (102) and is distributed along the length, a connecting channel which is positioned in the connecting piece (4), and two ends of the lower channel in the lower membrane frame (102) are communicated with the side channels in the corresponding side membrane frames (103) through the connecting channels of the connecting piece (4), and two ends of the upper channel in the upper membrane frame (101) are communicated with the side channels in the side membrane frames (103) through the connecting channels of the corresponding connecting piece (4);

the water producing port (3) is communicated with an upper channel in the upper membrane frame (101).

3. A flexible flat sheet membrane element according to claim 2, wherein: the connecting piece (4) comprises a connecting block (41), a connecting channel is arranged in the connecting block (41), a lateral inserting column (42) extending transversely is arranged at one side end of the connecting block (41), a lateral guide hole (43) communicated with the connecting channel is arranged at the outer side end of the lateral inserting column (42), a lateral end inserting column (44) extending upwards is arranged at the upper side end of the connecting block (41), and a lateral guide hole (45) communicated with the connecting channel is arranged at the outer end face of the lateral end inserting column (44).

4. A flexible flat sheet membrane element according to claim 3, wherein: an upper slot (1011) is arranged on the lower end surface of the upper film frame (101) along the length, the upper slot (1011) is communicated with the upper channel, an upper jack (1012) used for being connected with a connecting piece (4) is further arranged on the left side and the right side of the upper film frame (101), each upper jack (1012) is communicated with the upper channel, and an upper clamping part (1013) used for clamping the flexible membrane (2) is arranged on the front inner wall and the rear inner wall of the upper slot (1011).

5. The flexible flat sheet membrane element according to claim 4, wherein: the upper end face of the lower membrane frame (102) is provided with a lower slot along the length, the left side and the right side of the lower membrane frame (102) are also provided with lower sockets for being connected with the connecting piece (4), each lower socket is communicated with a lower channel, and the front inner wall and the rear inner wall of the lower slot are provided with lower clamping parts for clamping the flexible membrane (2).

6. The flexible flat sheet membrane element according to claim 5, wherein: the side film frame (103) comprises a front side plate (1031) and a rear side plate (1032), two partition plates (1033) are arranged on the front plate surface of the rear side plate (1032) along the width interval, a side channel is arranged between the two partition plates (1033), a side end plug-in post (44) of a connecting piece (4) can be inserted between the two partition plates (1033), a plurality of side inlets (1034) are arranged on the partition plates (1033) close to the flexible diaphragm (2) along the height interval, the side film frame also comprises clamping plates (1035) which are respectively arranged on the outer sides of the two partition plates (1033), mounting slots (1036) are formed in each clamping plate (1035) and a corresponding partition plate (1033), and plug-in strips which are correspondingly plugged with the mounting slots (1036) are formed in the rear side surface of the front side plate (1031); the front side plate (1031), the rear side plate (1032) and the clamping plate (1035) close to the flexible membrane are surrounded with side frame slots.

7. The flexible flat sheet membrane element according to claim 6, wherein: the membrane frame (1) is made of plastic or metal.

8. The flexible flat sheet membrane element of claim 1, wherein: the joint of the outer edge of the flexible membrane (2) and the membrane frame (1) is provided with a glue layer.

9. The flexible flat sheet membrane element of claim 1, wherein: a handle (5) is arranged at the top of the membrane frame (1).

10. The flexible flat sheet membrane element of claim 1, wherein: the flexible membrane (2) is a flat membrane, a corrugated membrane or a composite membrane.

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