A sewage treatment equipment based on submerged flat plate membrane separation technology

Abstract

The application belongs to the technical field of sewage treatment, and discloses a sewage treatment equipment based on submerged flat plate membrane separation technology, which comprises a box frame, the side surfaces of the box frame are equidistantly provided with clamping grooves, flat plate membrane assemblies are movably clamped in the clamping grooves, the flat plate membrane assemblies are displaced up and down relative to the clamping grooves, water collecting tanks are equidistantly and fixedly installed at the top end of the inner cavity of the box frame, and every two water collecting tanks are connected in communication through a water collecting pipe. The cooperation between the electric push rod, the linkage assembly and the water suction hose is utilized, that is, the active ascending and descending of the linkage frame is realized through the electric push rod, the ascending and descending of the water suction hose is quickly driven, the establishment and cutting of the water taking channel are quickly realized, the whole process is quickly completed, the cutting and establishment of the channel can be quickly performed when a single flat plate membrane assembly is maintained, the maintenance time is significantly shortened, and the maintenance efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, specifically a wastewater treatment device based on submerged flat-plate membrane separation technology. Background Technology

[0002] Wastewater treatment equipment based on submerged flat-sheet membrane separation technology is a highly efficient and advanced wastewater treatment system. This technology involves directly immersing membrane modules in a biological reaction tank, utilizing the membrane's efficient retention capacity to achieve solid-liquid separation. Specifically, wastewater flows between multiple flat-sheet membranes, and the densely packed micropores on the membrane surface trap particles, bacteria, and other impurities in the water. Under pressure or external suction, clean water flows through the membrane pores into the filter plates and then out through the membrane's inlet to the collection tank, thus purifying the wastewater.

[0003] Conventional wastewater treatment equipment based on submerged flat sheet membrane separation technology often installs multiple flat sheet membrane modules to improve wastewater treatment efficiency. While this method can improve wastewater treatment efficiency, the multiple flat sheet membrane modules are installed inside the device in a sequential nested manner. When cleaning or maintaining a single flat sheet membrane is required, all flat sheet membrane modules in front of that membrane need to be disassembled in sequence, resulting in low overall maintenance efficiency.

[0004] When maintaining a single flat sheet membrane module, it is necessary not only to disassemble the flat sheet membrane, but also to disassemble the water inlet and water collection components on top of all the front-end flat sheet membrane modules. This makes the overall disassembly difficult and prevents the rapid disassembly of the water intake channel of a single flat sheet membrane module, which urgently needs to be improved. Summary of the Invention

[0005] The purpose of this invention is to provide a wastewater treatment device based on submerged flat-plate membrane separation technology to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a wastewater treatment device based on submerged flat sheet membrane separation technology, comprising a box frame, wherein slots are equally spaced on the side of the box frame, and flat sheet membrane modules are movably engaged inside each slot, the flat sheet membrane modules being displaced vertically relative to the slots; water collection tanks are fixedly installed at equal intervals at the top of the inner cavity of the box frame, and every two water collection tanks are connected by a water collection pipe, the water collection pipes located on the left and right sides passing through the left and right sides of the box frame; a transverse guide rail is fixedly installed in the middle of the bottom of each water collection tank, an electric push rod is fixedly installed in the middle of the bottom of each transverse guide rail, and a linkage component is fixedly installed at the output end of each electric push rod; the transverse guide rail and the linkage component are movably engaged; a water suction hose is fixedly sleeved on both the front and rear sides of the linkage component, the bottom end of the water suction hose is fixedly connected to the top end of the flat sheet membrane module, and the top end of the water suction hose is fixedly connected to the water collection tank; and self-locking components are installed on both the left and right sides of the linkage component, located on the left and right sides of the flat sheet membrane module.

[0007] In actual use, multiple flat sheet membrane modules can be snapped together with the slots to fix the flat sheet membrane modules to the pumping hose. At the same time, the water collection pipe needs to be connected to the external pumping device, and an aeration device should be installed at the bottom of the tank frame. The entire device is then inserted into the water to complete the preparation for sewage treatment.

[0008] As a further technical solution of the present invention, the flat sheet membrane assembly includes a support frame, a porous microfiltration membrane is fixedly installed inside the support frame, and a locking strip is fixedly installed at both the front and rear ends of the support frame, and the support frame is movably engaged with the locking strip and the locking groove.

[0009] As a further technical solution of the present invention, water intake pipes are installed on both the front and rear sides of the top of the support frame. The water intake pipes are connected to the porous microfiltration membrane. The water intake pipes are movably connected to the water pumping hose. The water intake pipes and the water pumping hose are connected to each other.

[0010] As a further technical solution of the present invention, an installation hole is provided in the middle of the top of the support frame, and limiting holes are provided on both the left and right sides of the support frame at the upper and lower ends of the installation hole. The installation hole and the limiting holes are movably engaged with the self-locking component.

[0011] During wastewater treatment, an external pumping device can be activated, creating negative pressure within the treatment tank. The wastewater then automatically rises to the porous microfiltration membranes and is filtered through multiple membranes before being discharged through the intake pipe. The wastewater then enters the pumping hose and flows through multiple collection tanks, finally converging through the collection pipes and being discharged from the left and right ends, completing the wastewater filtration process.

[0012] As a further technical solution of the present invention, the linkage component includes a linkage frame, the front and rear ends of the linkage frame are fixedly sleeved with the outer sides of two water pumping hoses, the middle part of the linkage frame is connected to the output end of the electric push rod, and the left and right sides of the top of the linkage frame are fixedly installed with first fixing seats.

[0013] As a further technical solution of the present invention, the end of the first fixed seat away from the linkage frame is movably connected to a connecting rod through a rotating shaft, and the end of the connecting rod away from the first fixed seat is movably connected to a second fixed seat through a rotating shaft. The top of the second fixed seat is fixedly installed with a guide block, and the guide block is movably engaged with the transverse guide rail.

[0014] When it is necessary to disassemble and assemble the water pumping hose and the water intake pipe, i.e. disassembly, the electric push rod can be activated and the electric push rod can be controlled to shorten. At this time, the linkage frame will rise accordingly, and the distance between the linkage frame and the horizontal guide rail will decrease accordingly. When the linkage frame rises, it will drive the two water pumping hoses to move upward until the connection between the water pumping hose and the water intake pipe is released, and the water intake channel can be cut off.

[0015] During installation, the electric push rod can be extended to lower the linkage frame and move the water pumping hose downward until the water pumping hose and the water intake pipe are fully connected, thus connecting the water intake channel and quickly establishing and disconnecting the water intake channel.

[0016] By utilizing the coordinated action of the electric actuator, the linkage assembly, and the pumping hose—that is, by using the electric actuator to actively raise and lower the linkage frame, which in turn rapidly raises and lowers the pumping hose—the water intake channel can be quickly established and cut off. The entire process is completed quickly, enabling rapid channel establishment and cutting off when maintaining a single flat sheet membrane module, significantly shortening maintenance time and improving maintenance efficiency.

[0017] As a further technical solution of the present invention, the self-locking component includes an extension frame, one end of which passes through one side of the transverse guide rail and is connected to one side of the guide block, and an mounting plate is fixedly installed on the bottom end of the extension frame near the transverse guide rail.

[0018] As a further technical solution of the present invention, the mounting plate is located on the front of the support frame, and mounting rods are fixedly installed on the middle part of the mounting plate near the support frame. Limiting rods are fixedly installed at the upper and lower ends of the mounting plate near the support frame.

[0019] As a further technical solution of the present invention, when the water intake pipe and the water pumping hose are movably connected, the distance between the two mounting plates is the minimum value, and the mounting plates are movably engaged with the mounting holes, and the limiting rod is movably engaged with the limiting holes.

[0020] When maintaining a single flat membrane module, the lifting of the linkage frame causes the two connecting rods at the top to deflect away from the center. This causes the two guide blocks to shift relative to the transverse guide rail, moving them away from each other. Consequently, the two extension frames move away from each other, and the two mounting plates move away from each other, automatically releasing the engagement between the mounting rod and the mounting hole, as well as the engagement between the limit rod and the limit hole. At this point, the support frame is no longer connected to the self-locking assembly, and the support frame can be pulled out downwards to complete the quick disassembly of a single support frame.

[0021] During installation, simply engage the support frame with the slot, align the mounting rod with the mounting hole, extend the electric push rod, and lower the linkage frame. This will bring the two mounting plates closer together until the mounting rod and mounting hole engage, and the limit rod and limit hole engage, completing the automatic installation of the support frame and simultaneously installing the water intake pipe and the water pumping hose.

[0022] By utilizing the device to automatically establish and cut off the pumping channel, and through the cooperation between the linkage component and the self-locking component, the device can automatically complete the installation of a single flat sheet membrane module after establishing the pumping channel, and automatically complete the disassembly of a single flat sheet membrane module after the pumping channel is automatically released. The entire process is completed synchronously, and flat sheet membrane modules at any position can be quickly installed and removed without disassembling the front-end flat sheet membrane module, significantly shortening maintenance time and further improving maintenance efficiency.

[0023] The beneficial effects of this invention are as follows:

[0024] (1) This invention utilizes the cooperation between the electric push rod, the linkage component, and the water pumping hose. Specifically, the electric push rod enables the linkage frame to rise and fall actively, which in turn drives the water pumping hose to rise and fall rapidly. This allows for the rapid establishment and disconnection of the water intake channel. The entire process is completed quickly, enabling the channel to be quickly disconnected and established when maintaining a single flat sheet membrane module, significantly shortening maintenance time and improving maintenance efficiency.

[0025] (2) The present invention utilizes the device to automatically establish and automatically cut off the water pumping channel. Through the cooperation between the linkage component and the self-locking component, the device can automatically complete the installation of a single flat sheet membrane module after establishing the water pumping channel, and can automatically complete the disassembly of a single flat sheet membrane module after the water pumping channel is automatically released. The entire process is completed synchronously. Flat sheet membrane modules at any position can be quickly disassembled and assembled without disassembling the front-end flat sheet membrane module, which significantly shortens the maintenance time and further improves the maintenance efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a separate schematic diagram of the box frame of the present invention;

[0028] Figure 3 This is a cross-sectional schematic diagram of the internal structure of the box frame of the present invention;

[0029] Figure 4 This is a schematic diagram showing the fit between the water collection tank and the water collection pipe structure of the present invention;

[0030] Figure 5 This is a separate schematic diagram of the flat sheet membrane module structure of the present invention;

[0031] Figure 6 This is a schematic diagram showing the fit between the pumping hose and the linkage assembly structure of the present invention;

[0032] Figure 7 This is an exploded view of the transverse guide rail and linkage component structure of the present invention;

[0033] Figure 8 This is a separate schematic diagram of the self-locking component structure of the present invention.

[0034] In the diagram: 1. Box frame; 2. Slot; 3. Flat sheet membrane module; 301. Support frame; 302. Locking strip; 303. Porous microfiltration membrane sheet; 304. Water intake pipe; 305. Mounting hole; 306. Limiting hole; 4. Water collection tank; 5. Water collection pipe; 6. Horizontal guide rail; 7. Electric push rod; 8. Water pumping hose; 9. Linkage assembly; 901. Linkage frame; 902. Guide block; 903. First fixed seat; 904. Second fixed seat; 905. Connecting rod; 10. Self-locking assembly; 101. Extension frame; 102. Mounting plate; 103. Mounting rod; 104. Limiting rod. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] like Figures 1 to 8As shown in the embodiment of the present invention, a wastewater treatment device based on submerged flat sheet membrane separation technology includes a box frame 1. The side of the box frame 1 is provided with slots 2 at equal intervals. Flat sheet membrane components 3 are movably engaged inside the slots 2. The flat sheet membrane components 3 move up and down relative to the slots 2. Water collection tanks 4 are fixedly installed at equal intervals at the top of the inner cavity of the box frame 1. Every two water collection tanks 4 are connected by water collection pipes 5. The water collection pipes 5 located on the left and right sides pass through the left and right sides of the box frame 1. A transverse guide rail 6 is fixedly installed in the middle of the bottom of each water collection tank 4. An electric push rod 7 is fixedly installed in the middle of the bottom of the transverse guide rail 6. A linkage component 9 is fixedly installed at the output end of the electric push rod 7. The transverse guide rail 6 and the linkage component 9 are movably engaged. A water suction hose 8 is fixedly sleeved on both the front and rear sides of the linkage component 9. The bottom end of the water suction hose 8 is fixedly connected to the top end of the flat sheet membrane component 3. The top end of the water suction hose 8 is fixedly connected to the water collection tank 4. Self-locking components 10 located on the left and right sides of the flat sheet membrane component 3 are installed on both sides of the linkage component 9.

[0037] In actual use, multiple flat sheet membrane modules 3 can be snapped together with the slot 2, and the flat sheet membrane module 3 can be fixed to the pumping hose 8. At the same time, the water collection pipe 5 needs to be connected to the external pumping device, and an aeration device is installed at the bottom of the box frame 1. The entire device is then inserted into the water to complete the preparation before sewage treatment.

[0038] like Figure 1 and Figure 3 as well as Figure 5 As shown, the flat sheet membrane module 3 includes a support frame 301. A porous microfiltration membrane 303 is fixedly installed inside the support frame 301. A retaining strip 302 is fixedly installed at both the front and rear ends of the support frame 301. The support frame 301 is movably engaged with the retaining strip 302 and the retaining groove 2. A water intake pipe 304 is installed on both the front and rear sides of the top of the support frame 301. The water intake pipe 304 is connected to the porous microfiltration membrane 303 and is movably sleeved with the water pumping hose 8. The water intake pipe 304 is connected to the water pumping hose 8. An installation hole 305 is opened in the middle of the top of the support frame 301. Limiting holes 306 are opened on both the left and right sides of the support frame 301 at the upper and lower ends of the installation hole 305. The installation hole 305 and the limiting hole 306 are movably engaged with the self-locking component 10.

[0039] During wastewater treatment, an external pumping device can be activated, which creates negative pressure in the treatment tank. The wastewater then automatically rises to the porous microfiltration membrane 303 and is filtered by multiple porous microfiltration membranes 303 before being discharged through the water intake pipe 304. At this point, the wastewater enters the interior of the pumping hose 8 and then enters the interior of multiple water collection tanks 4. Finally, it is collected through the water collection pipe 5 and discharged from the water collection pipes 5 at both ends, completing the wastewater filtration process.

[0040] like Figure 3 and Figure 6 as well as Figure 7 As shown, the linkage assembly 9 includes a linkage frame 901. The front and rear ends of the linkage frame 901 are fixedly sleeved with the outer sides of the two water pumping hoses 8. The middle part of the linkage frame 901 is connected to the output end of the electric push rod 7. The left and right sides of the top of the linkage frame 901 are fixedly installed with first fixed seats 903. The end of the first fixed seat 903 away from the linkage frame 901 is movably connected to the connecting rod 905 through a rotating shaft. The end of the connecting rod 905 away from the first fixed seat 903 is movably connected to the second fixed seat 904 through a rotating shaft. The top of the second fixed seat 904 is fixedly installed with a guide block 902. The guide block 902 is movably engaged with the transverse guide rail 6.

[0041] Example: When it is necessary to disassemble and assemble the water pumping hose 8 and the water intake pipe 304, i.e., disassembly, the electric push rod 7 can be activated and the electric push rod 7 can be shortened. At this time, the linkage frame 901 will rise accordingly. At this time, the distance between the linkage frame 901 and the transverse guide rail 6 will decrease accordingly. When the linkage frame 901 rises, it will drive the two water pumping hoses 8 to move upward until the connection between the water pumping hose 8 and the water intake pipe 304 is released. At this time, the water intake channel can be cut off.

[0042] During installation, the electric push rod 7 can be extended to drive the linkage frame 901 to descend and move the water pumping hose 8 downward until the water pumping hose 8 is fully connected to the water intake pipe 304, thus connecting the water intake channel and quickly completing the establishment and disconnection of the water intake channel.

[0043] By utilizing the coordinated action between the electric push rod 7, the linkage component 9, and the water pumping hose 8, the linkage frame 901 is actively raised and lowered via the electric push rod 7, which in turn drives the water pumping hose 8 to rise and fall rapidly. This enables the establishment and disconnection of the water intake channel quickly, completing the entire process rapidly. This allows for the rapid disconnection and establishment of the channel when maintaining a single flat sheet membrane module 3, significantly shortening maintenance time and improving maintenance efficiency.

[0044] like Figure 3 and Figure 6 as well as Figure 8As shown, the self-locking assembly 10 includes an extension frame 101. One end of the extension frame 101 passes through one side of the transverse guide rail 6 and is connected to one side of the guide block 902. Mounting plates 102 are fixedly installed on the bottom end of the extension frame 101 near the transverse guide rail 6. The mounting plates 102 are located on the front of the support frame 301. Mounting rods 103 are fixedly installed in the middle of the mounting plates 102 near the support frame 301. Limiting rods 104 are fixedly installed at the upper and lower ends of the mounting plates 102 near the support frame 301. When the water intake pipe 304 and the water pumping hose 8 are movably connected, the distance between the two mounting plates 102 is the minimum value, and the mounting plates 102 are movably engaged with the mounting holes 305. The limiting rods 104 are movably engaged with the limiting holes 306.

[0045] Example: When maintaining a single flat membrane module 3, the lifting of the linkage 901 causes the two connecting rods 905 at the top to deflect away from the center. At this time, the two guide blocks 902 are displaced relative to the transverse guide rail 6, causing the two guide blocks 902 to move away from each other. The two extension frames 101 also move away from each other, and the two mounting plates 102 move away from each other. The locking between the mounting rod 103 and the mounting hole 305, as well as the locking between the limiting rod 104 and the limiting hole 306, are automatically released. At this time, the support frame 301 is no longer connected to the self-locking component 10, and the support frame 301 can be pulled out downwards to complete the quick disassembly process of a single support frame 301.

[0046] During installation, simply engage the support frame 301 with the slot 2, align the mounting rod 103 with the mounting hole 305, extend the electric push rod 7, and lower the linkage frame 901. This will bring the two mounting plates 102 closer together until the mounting rod 103 engages with the mounting hole 305 and the limiting rod 104 engages with the limiting hole 306, thus completing the automatic installation of the support frame 301 and simultaneously installing the water intake pipe 304 and the water pumping hose 8.

[0047] By utilizing the device to automatically establish and cut off the water pumping channel, and through the cooperation between the linkage component 9 and the self-locking component 10, the device can automatically complete the installation of a single flat sheet membrane module 3 after establishing the water pumping channel, and automatically complete the disassembly of a single flat sheet membrane module 3 after the water pumping channel is automatically released. The entire process is completed synchronously, and the flat sheet membrane module 3 at any position can be quickly installed and removed without disassembling the front-end flat sheet membrane module 3, significantly shortening maintenance time and further improving maintenance efficiency.

[0048] Working principle and usage process:

[0049] In use, multiple flat membrane modules 3 can be snapped together with the slot 2, and the flat membrane module 3 can be fixed to the water pumping hose 8. At the same time, the water collection pipe 5 needs to be connected to the external water pumping device, and an aeration device is installed at the bottom of the box frame 1. The entire device is then inserted into the water to complete the preparation before sewage treatment.

[0050] When treating sewage, the external pumping device can be turned on, which will generate negative pressure in the treatment tank. The sewage will then automatically rise to the porous microfiltration membrane 303 and be filtered by multiple porous microfiltration membranes 303 before being discharged through the water intake pipe 304. At this time, the sewage can enter the interior of the pumping hose 8 and enter the interior of multiple water collection tanks 4 through the pumping hose 8. Finally, it will be collected through the water collection pipe 5 and discharged from the water collection pipes 5 at both ends, completing the sewage filtration process.

[0051] When it is necessary to disassemble and assemble the water pumping hose 8 and the water intake pipe 304, i.e. disassembly, the electric push rod 7 can be activated and the electric push rod 7 can be shortened. At this time, the linkage frame 901 will rise accordingly. At this time, the distance between the linkage frame 901 and the transverse guide rail 6 will decrease accordingly. When the linkage frame 901 rises, it will drive the two water pumping hoses 8 to move upward until the connection between the water pumping hose 8 and the water intake pipe 304 is released. At this time, the water intake channel can be cut off.

[0052] During installation, the electric push rod 7 can be extended to drive the linkage frame 901 to descend and drive the water pumping hose 8 to move downward until the water pumping hose 8 is fully connected to the water intake pipe 304, thus connecting the water intake channel and quickly completing the establishment and disconnection of the water intake channel.

[0053] When maintaining a single flat membrane module 3, the lifting of the linkage frame 901 causes the two connecting rods 905 at the top to deflect away from the center. At this time, the two guide blocks 902 are displaced relative to the transverse guide rail 6, causing the two guide blocks 902 to move away from each other. The two extension frames 101 also move away from each other, and the two mounting plates 102 move away from each other. This automatically releases the engagement between the mounting rod 103 and the mounting hole 305, as well as the engagement between the limiting rod 104 and the limiting hole 306. At this time, the support frame 301 is no longer connected to the self-locking component 10, and the support frame 301 can be pulled out downwards to complete the quick disassembly process of a single support frame 301.

[0054] During installation, simply engage the support frame 301 with the slot 2, align the mounting rod 103 with the mounting hole 305, extend the electric push rod 7, and lower the linkage frame 901. This will bring the two mounting plates 102 closer together until the mounting rod 103 engages with the mounting hole 305 and the limiting rod 104 engages with the limiting hole 306, thus completing the automatic installation of the support frame 301 and simultaneously installing the water intake pipe 304 and the water pumping hose 8.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sewage treatment plant based on the immersed flat sheet membrane separation technology, comprising a box frame (1), characterized in that: The side of the box frame (1) is equidistantly provided with a clamping groove (2), the inside of the clamping groove (2) is movably clamped with a flat plate membrane assembly (3), the flat plate membrane assembly (3) is displaced up and down relative to the clamping groove (2), the top of the inner cavity of the box frame (1) is equidistantly fixedly installed with a water collecting tank (4), every two water collecting tanks (4) are connected through a water collecting pipe (5), the water collecting pipes (5) on the left and right sides penetrate the left and right sides of the box frame (1), the middle of the bottom of the water collecting tank (4) is fixedly installed with a horizontal guide rail (6), the middle of the bottom of the horizontal guide rail (6) is fixedly installed with an electric push rod (7), the output end of the electric push rod (7) is fixedly installed with a linkage assembly (9), the horizontal guide rail (6) and the linkage assembly (9) are movably clamped, the front and rear sides of the linkage assembly (9) are fixedly sleeved with a water pumping hose (8), the bottom of the water pumping hose (8) is fixedly communicated with the top of the flat plate membrane assembly (3), the top of the water pumping hose (8) is fixedly communicated with the water collecting tank (4), the left and right sides of the linkage assembly (9) are installed with a self-locking assembly (10) located on the left and right sides of the flat plate membrane assembly (3). The flat plate membrane assembly (3) comprises a support frame (301), the inside of the support frame (301) is fixedly installed with a porous microfiltration membrane (303), the front and rear ends of the support frame (301) are fixedly installed with a clamping strip (302), the support frame (301) is movably clamped between the clamping strip (302) and the clamping groove (2). The front and rear sides of the top of the support frame (301) are installed with a water taking pipe (304), the water taking pipe (304) is communicated with the porous microfiltration membrane (303), the water taking pipe (304) is movably sleeved with the water pumping hose (8), the water taking pipe (304) is communicated with the water pumping hose (8). The middle of the top of the support frame (301) is provided with a mounting hole (305), the left and right sides of the support frame (301) are provided with limiting holes (306) located on the upper and lower ends of the mounting hole (305), the mounting hole (305) and the limiting hole (306) are movably clamped with the self-locking assembly (10). The linkage assembly (9) comprises a linkage frame (901), the front and rear ends of the linkage frame (901) are fixedly sleeved with the outer sides of the two water pumping hoses (8), the middle of the linkage frame (901) is connected with the output end of the electric push rod (7), the left and right sides of the top of the linkage frame (901) are fixedly installed with a first fixed seat (903).

2. The sewage treatment apparatus based on the submerged flat sheet membrane separation technology according to claim 1, characterized in that: The end, away from the linkage frame (901), of the first fixed seat (903) is movably connected with a connecting rod (905) through a rotating shaft, the end, away from the first fixed seat (903), of the connecting rod (905) is movably connected with a second fixed seat (904) through a rotating shaft, the top of the second fixed seat (904) is fixedly installed with a guide block (902), the guide block (902) is movably clamped with the horizontal guide rail (6).

3. A sewage treatment apparatus based on the submerged flat sheet membrane separation technology according to claim 2, characterized in that: Said self-locking assembly (10) includes an extension frame (101), one end of the extension frame (101) penetrates through one side of the transverse guide rail (6) and is connected with one side of the guide block (902), and the bottom end near one side of the extension frame (101) is fixedly installed with the mounting plate (102).

4. The wastewater treatment apparatus based on the submerged flat sheet membrane separation technology according to claim 3, characterized in that: Said mounting plate (102) is located on the front face of the support frame (301), and the middle part near one side of the mounting plate (102) is fixedly installed with the mounting rod (103), and the upper and lower ends near one side of the mounting plate (102) are fixedly installed with the limiting rod (104).

5. A sewage treatment apparatus based on the submerged flat sheet membrane separation technology according to claim 4, characterized in that: When the water taking pipe (304) is movably sleeved with the water pumping hose (8), the spacing between the two mounting plates (102) is the minimum value, the mounting plate (102) is movably clamped with the mounting hole (305), and the limiting rod (104) is movably clamped with the limiting hole (306).

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