Energy-saving composite bio-membrane reactor

Abstract

The invention relates to a bio-membrane reactor, in particular to an energy-saving composite bio-membrane reactor. Comprising a reaction tank, a water inlet pipe, a membrane assembly, a pull ring, an extrusion block, an aeration blower, an aeration pipe, an aeration valve, a water outlet pipe, a first valve, a cleaning tank and the like, a water inlet pipe is arranged on the rear side of the reaction tank, a membrane assembly is arranged in the reaction tank, a pull ring is slidably arranged on the upper side of the membrane assembly, extrusion blocks are arranged at four corners of the lower portion of the membrane assembly, an aeration blower is mounted on the front side of the reaction tank, an aeration pipe is connected between the aeration blower and the membrane assembly, an aeration valve is arranged in the middle of the aeration pipe, and a water outlet pipe is arranged on the membrane assembly. Through the design of the fixed frame, the pushing frame, the sliding frame and the like, when the membrane module needs to be cleaned, the membrane module can be quickly lifted out of the reaction tank and fed into the cleaning tank under the assistance of the lifting mechanism, so that the membrane module and the reaction tank can be quickly and automatically fixed and separated.

Description

Technical Field

[0001] The invention relates to a biofilm reactor, in particular to an energy-saving composite biofilm reactor. Background Art

[0002] Membrane bioreactor (MBR) is an advanced water treatment method that combines membrane separation technology with biological treatment processes. It is widely used in various wastewater treatment scenarios, including medical wastewater. In medical institutions, wastewater treatment is particularly important because hospital wastewater contains not only conventional organic pollutants, but also pathogens, drug residues, chemical reagents and other harmful substances. If these components are discharged directly without proper treatment, they will pose a serious threat to public health and the environment.

[0003] When cleaning the membrane components of traditional composite biofilm reactors, manual disassembly and installation are usually required, which is not only time-consuming and labor-intensive, but also easily causes damage to the membrane components, resulting in increased energy consumption and decreased efficiency of the biofilm reactor. In addition, due to the limited internal space of the reactor, manual operation also poses certain safety hazards. Summary of the invention

[0004] In order to overcome the disadvantage that the existing biofilm reactor needs to be manually disassembled and installed, the present invention provides an energy-saving composite biofilm reactor.

[0005] The technical solution is: an energy-saving composite biofilm reactor, including a reaction tank, a water inlet pipe, a membrane assembly, a pull ring, an extrusion block, an aeration blower, an aeration pipe, an aeration valve, a water outlet pipe, a first valve, a cleaning tank, a gantry, a lifting mechanism, a wire rope, a hook, a mounting block, a telescopic rod, a fixed frame, a pushing frame, a sliding frame and a positioning block. The rear side of the reaction tank is provided with a water inlet pipe, a membrane assembly is placed in the reaction tank, a pull ring is provided on the upper side of the membrane assembly, an extrusion block is provided at the four corners of the lower part of the membrane assembly, an aeration blower is installed at the front side of the reaction tank, an aeration pipe is connected between the aeration blower and the membrane assembly, an aeration valve is provided in the middle of the aeration pipe, a water outlet pipe is provided on the membrane assembly, and multiple water outlet pipes converge into A water outlet main pipe is provided, and a first valve is installed between the water outlet pipe and the water outlet main pipe. A cleaning tank is provided on the left side of the reaction tank. A gantry is provided outside the reaction tank and the cleaning tank. A lifting mechanism is slidably installed on the gantry. One end of a steel wire rope is connected to the lifting mechanism, and the other end is connected to a hook. A plurality of mounting blocks are provided in the reaction tank. A plurality of telescopic rods are provided on the mounting blocks. The telescopic rods are connected to a fixed frame in groups of two. The upper part of the fixed frame contacts the membrane assembly. A sliding frame is slidably connected to the lower side of the fixed frame. The sliding frame is rotatably connected to a pushing frame. The pushing frame is rotatably connected to the bottom of the reaction tank. An extrusion groove is provided at the lower part of the pushing frame. The extrusion groove contacts the extrusion block. Positioning blocks are provided on the front and rear sides of the pushing frame and on the upper side of the fixed frame.

[0006] Furthermore, it also includes a first limiting ring and a second limiting ring. The first limiting ring is provided on the positioning block on the upper side of the fixing frame, and the second limiting ring is provided on the membrane assembly. The first limiting ring and the second limiting ring are both provided with through holes of the same size in the middle.

[0007] Furthermore, it also includes a first rotating frame, a sliding rod, a second rotating frame and a limiting rod. The first rotating frame is rotatably provided on the left and right sides of the pull ring. The two first rotating frames are respectively rotatably connected to the sliding rod. Two second rotating frames are rotatably provided on the sliding rod. The two second rotating frames are respectively rotatably connected to the limiting rod. The sliding rod and the limiting rod are respectively slidably connected to multiple second limiting rings.

[0008] Furthermore, it also includes a limit block, a plurality of limit blocks are arranged in the middle of the mounting block, the limit blocks are slidably connected to the fixing frame in groups of two, protrusions are arranged on the left and right sides of the opposite sides of the two limit blocks in the same group, and depressions matching the protrusions are arranged on the front and rear sides of the fixing frame.

[0009] Furthermore, it also includes a limit plate. The limit plate is provided on the lower side of the lifting mechanism. The wire rope is slidably connected to the upper side of the limit plate. A limit hole is opened in the middle of the limit plate. The wire rope passes through the limit hole from top to bottom. The hook is located on the lower side of the limit plate.

[0010] Furthermore, the cleaning tank also includes a cylinder, a fixed plate, a cleaning nozzle, a water inlet pipe and a second valve. Multiple cylinders are installed on the side wall of the cleaning tank, and the output shaft of the cylinder is connected to the fixed plate. Multiple cleaning nozzles are provided on the upper inner side of the cleaning tank. An aeration blower is provided on the front side of the cleaning tank. The aeration blower is connected to an aeration pipe, and an aeration valve is provided on the aeration pipe. A water inlet pipe is provided on the front side of the cleaning tank, and a first valve is provided on the water inlet pipe. A water outlet is opened at the lower rear side of the cleaning tank, and a second valve is provided at the water outlet.

[0011] Furthermore, it also includes a flow meter and a controller. The flow meter is provided at the water inlet pipe of the reaction tank, and the controller is provided at the front side of the reaction tank. The flow meter and the aeration blower are electrically connected to the controller.

[0012] Furthermore, a Y-shaped groove is provided on one side of the positioning block on the upper side of the fixing frame close to the membrane assembly, and opposite sides of the positioning blocks on the front and rear sides of the pushing frame are combined to form a Y-shaped groove.

[0013] Furthermore, the contact point between the fixing frame and the membrane assembly is V-shaped and is matched with the four corners of the membrane assembly.

[0014] Beneficial effects of the present invention: 1. Through the design of components such as the fixed frame, the pushing frame and the sliding frame, when the membrane assembly needs to be cleaned, the membrane assembly can be quickly lifted out of the reaction tank and sent to the cleaning tank with the assistance of the lifting mechanism, thereby realizing rapid and automatic fixation and separation between the membrane assembly and the reaction tank, eliminating the need for manual disassembly or installation of the membrane assembly, shortening the time required for cleaning and improving overall operating efficiency.

[0015] 2. The present invention ensures the stability of the membrane assembly during daily operation and resetting through the design of components such as the fixing frame, the limit block and the limit rod, avoids unnecessary movement caused by the buoyancy of water or the impact of bubbles during aeration, and automatically releases the lock when the membrane assembly is lifted, thereby improving efficiency; through the coordinated use of the flow meter and the controller, real-time monitoring of the water inlet flow and intelligent adjustment of the aeration amount of the aeration blower are realized, thereby improving the operating efficiency and energy-saving effect of the reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a cross-sectional view of the reaction tank of the present invention.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the mounting block, telescopic rod and fixing frame of the present invention.

[0019] Figure 4 Schematic diagram of the three-dimensional structure of the fixing frame and pushing frame when the membrane assembly is taken out of the reaction pool.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the membrane assembly of the present invention.

[0021] Figure 6 It is a three-dimensional structural schematic diagram of the locking mechanism of the present invention.

[0022] Figure 7 for Figure 6 Schematic diagram of the three-dimensional structure at A in the middle.

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the pull ring, the first rotating frame, the sliding rod and other parts of the present invention.

[0024] Fig. 9 It is a three-dimensional structural schematic diagram of the lifting mechanism, steel wire rope, limiting plate and other parts of the present invention.

[0025] Fig.10 It is a schematic diagram of the three-dimensional structure of the cleaning pool of the present invention.

[0026] Fig.11 It is a cross-sectional view of the cleaning pool of the present invention.

[0027] Figure numbers: 1_reaction tank, 101_water inlet pipe, 102_flow meter, 103_controller, 2_membrane assembly, 201_pull ring, 202_extrusion block, 3_aeration blower, 301_aeration pipe, 302_aeration valve, 4_water outlet pipe, 401_first valve, 5_cleaning tank, 6_gantry, 7_lifting mechanism, 71_wire rope, 72_hook, 8_mounting block, 9_telescopic rod, 10_fixed frame, 11_pushing frame, 1101_sliding frame, 12_positioning block, 13_limiting block, 14_first limiting ring, 15_first rotating frame, 16_sliding rod, 17_second rotating frame, 18_limiting rod, 19_second limiting ring, 20_limiting plate, 21_cylinder, 22_fixed plate, 23_cleaning nozzle, 24_water inlet pipe, 25_second valve. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0029] An energy-saving composite biofilm reactor, such as Figure 1-Figure 5As shown, it includes a reaction tank 1, a water inlet pipe 101, a membrane assembly 2, a pull ring 201, an extrusion block 202, an aeration blower 3, an aeration pipe 301, an aeration valve 302, a water outlet pipe 4, a first valve 401, a cleaning tank 5, a gantry 6, a lifting mechanism 7, a wire rope 71, a hook 72, a mounting block 8, a telescopic rod 9, a fixed frame 10, a pushing frame 11, a sliding frame 1101 and a positioning block 12. The water inlet pipe 101 is provided at the upper rear side of the reaction tank 1, and a plurality of membrane assemblies 2 are placed in the reaction tank 1. A pull ring is provided at the middle of the upper side of the membrane assembly 2. Ring 201, extrusion blocks 202 are provided at the four corners of the lower part of the membrane assembly 2, a plurality of aeration blowers 3 are installed at the front side of the reaction tank 1, an aeration pipe 301 is connected between the aeration blower 3 and the membrane assembly 2, an aeration valve 302 is provided in the middle of the aeration pipe 301, a water outlet pipe 4 is provided on the membrane assembly 2, a plurality of water outlet pipes 4 merge into the water outlet main pipe, a first valve 401 is installed between the water outlet pipe 4 and the water outlet main pipe, the membrane assembly 2 can be disconnected from the aeration pipe 301 and the water outlet pipe 4 at the aeration valve 302 and the first valve 401, a cleaning tank 5 is provided on the left side of the reaction tank 1 A gantry 6 is provided outside the reaction tank 1 and the cleaning tank 5, and a track is provided on the gantry 6. A lifting mechanism 7 is slidably installed on the track. The lifting mechanism 7 can move on the track of the gantry 6. One end of the wire rope 71 is connected to the lifting mechanism 7, and the other end is connected to the hook 72. A plurality of mounting blocks 8 are provided in the reaction tank 1. The mounting blocks 8 are located beside the four corners of the membrane assembly 2. A plurality of telescopic rods 9 are provided on the mounting blocks 8. The telescopic rods 9 are connected to the fixed frame 10 in groups of two. Each group of two telescopic rods 9 is arranged up and down. The upper part of the fixed frame 10 contacts the membrane assembly 2, and the lower part of the fixed frame 10 contacts the membrane assembly 2. A slide groove is provided on the side, and a sliding frame 1101 is slidably connected in the slide groove. The sliding frame 1101 is rotatably connected to the upper part of the pushing frame 11, and the lower part of the pushing frame 11 is rotatably connected to the bottom of the reaction tank 1. An extrusion groove is opened on the side of the lower part of the pushing frame 1 close to the membrane component 2, and the extrusion groove contacts the extrusion block 202. The upper part of the extrusion groove close to the membrane component 2 is arc-shaped, and the pushing frame 11 located on the lower side of the extrusion groove protrudes toward the membrane component 2, and the middle part of the extrusion groove is adapted to the extrusion block 202. Positioning blocks 12 are provided on the front and rear sides of the pushing frame 11 and the upper side of the fixed frame 10.

[0030] When the membrane assembly 2 needs to be cleaned, the connection between the membrane assembly 2 to be cleaned and the aeration pipe 301 and the outlet pipe 4 is disconnected at the aeration valve 302 and the first valve 401, and the lifting mechanism 7 moves to the top of the membrane assembly 2 to be cleaned, and the lifting mechanism 7 lowers the wire rope 71, and then hooks the pull ring 201 with the hook 72, and the lifting mechanism 7 lifts the membrane assembly 2 upward. When the membrane assembly 2 rises, the squeezing block 202 squeezes the arc-shaped part on the upper side of the squeezing groove of the push frame 11, so that the upper part of the push frame 11 swings toward the mounting block 8. Since the push frame 11 is rotatably connected to the reaction tank 1 and the sliding frame 1101 respectively, the swing of the push frame 11 will push the sliding frame 1 101 and the fixed frame 10 are away from the membrane assembly 2, creating space for the smooth lifting and subsequent resetting of the membrane assembly 2. The lifting mechanism 7 lifts the membrane assembly 2 and moves it above the cleaning tank 5, and places the membrane assembly 2 in the cleaning tank 5 for cleaning. After cleaning, the lifting mechanism 7 moves the membrane assembly 2 back to its original position. When the membrane assembly 2 descends back to its original position, the extrusion block 202 will squeeze the protruding part on the lower side of the extrusion groove of the pushing frame 11, so that the upper part of the pushing frame 11 swings toward the membrane assembly 2. Similarly, the upper side of the pushing frame 11 pulls the sliding frame 1101 and the fixed frame 10 to reset, and the positioning block 12 plays a certain positioning role to ensure that the membrane assembly 2 is smoothly reset.

[0031] like Figure 6 As shown, it also includes a first limiting ring 14 and a second limiting ring 19. The first limiting ring 14 is provided on the positioning block 12 on the upper side of the fixing frame 10, and a plurality of second limiting rings 19 are provided on the membrane assembly 2. The first limiting ring 14 and the second limiting ring 19 both have through holes of the same size in the middle. Pins can be inserted into the through holes of the first limiting ring 14 and the second limiting ring 19 to prevent the membrane assembly 2 from moving up and down unnecessarily due to the buoyancy of water or the impact of bubbles during aeration during daily use, thereby ensuring the stability of the membrane assembly 2.

[0032] like Figure 5-Figure 8As shown, it also includes a first rotating frame 15, a sliding rod 16, a second rotating frame 17 and a limiting rod 18. The first rotating frame 15 is rotatably provided on both sides of the pull ring 201. The two first rotating frames 15 are respectively rotatably connected with the sliding rod 16. The end of the sliding rod 16 away from the first rotating frame 15 is rotatably provided with two second rotating frames 17. The two second rotating frames 17 are respectively rotatably connected with the limiting rod 18. The sliding rod 16 and the limiting rod 18 are respectively slidably connected with a plurality of second limiting rings 19. The second limiting rings 19 limit the moving range of the sliding rod 16 and the limiting rod 18 so that they can only move linearly. When the membrane assembly 2 is used daily, the limiting rod 18 will extend into the through hole of the first limiting ring 14 to limit the up and down movement of the membrane assembly 2. When the membrane assembly 2 is lifted up, the pull ring 201 will move upward before the membrane assembly 2, and the pull ring 201 will drive the opposite end of the two first rotating frames 15 to move upward, and the two first rotating frames 15 will pull the two sliding rods 16 closer to each other. Similarly, the sliding rod 16 will pull the limiting rod 18 through the second rotating frame 17, and the limiting rod 18 will leave the through hole of the first limiting ring 14, and the limiting rod 18 will no longer limit the movement of the membrane assembly 2. At this time, the membrane assembly 2 can be lifted by the lifting mechanism 7. After the membrane assembly 2 is reset, the pull ring 201 falls due to gravity. Similarly, the pull ring 201 drives the first rotating frame 15 to reset, and then drives the sliding rod 16, the second rotating frame 17 and the limiting rod 18 and other components to reset, and the limiting rod 18 re-extends into the through hole of the first limiting ring 14 to limit the up and down movement of the membrane assembly 2.

[0033] like Figure 2-Figure 4 As shown, it also includes a limit block 13, a plurality of limit blocks 13 are arranged in the middle of the mounting block 8, the limit blocks 13 are slidably connected to the fixing frame 10 in a group of two, and protrusions are arranged on the left and right sides of the two limit blocks 13 in the same group on opposite sides, and depressions matching the protrusions are arranged on the front and back sides of the fixing frame 10, and when the protrusions are located in the depressions, the movement of the fixing frame 10 can be limited to a certain extent; when the membrane assembly 2 is used daily, the protrusions of the limit block 13 away from the mounting block 8 are located in the depressions of the fixing frame 10, which play a role in limiting the movement of the fixing frame 10 to a certain extent, and at the same time, the extrusion block 202 is located in the extrusion groove, which also plays a role in limiting the movement of the fixing frame 10, and after the membrane assembly 2 is lifted, the fixing frame 10 moves, and at this time, the protrusions close to the mounting block 8 are located in the depressions of the fixing frame 10, which limit the movement of the fixing frame 10 and prevent unnecessary displacement of the fixing frame 10 from affecting the resetting of the membrane assembly 2.

[0034] like Fig. 9As shown, it also includes a limit plate 20. The limit plate 20 is provided on the lower side of the lifting mechanism 7. The wire rope 71 is slidably connected to the upper side of the limit plate 20. A limit hole is opened in the middle of the limit plate 20. The size of the limit hole is adapted to the wire rope 71. The wire rope 71 passes through the limit hole from top to bottom, and the hook 72 is located on the lower side of the limit plate 20. When the lifting mechanism 7 lifts the membrane assembly 2, the limit plate 20 can limit the wire rope 71 at the limit hole to prevent the wire rope 71 from gradually shifting as it is wound during lifting, thereby affecting the lifting of the membrane assembly 2.

[0035] like Figure 10-11 As shown, the cleaning pool 5 also includes a cylinder 21, a fixed plate 22, a cleaning nozzle 23, a water inlet pipe 24 and a second valve 25. A plurality of cylinders 21 are installed on the side wall of the cleaning pool 5. The output shafts of the cylinders 21 penetrate the side wall of the cleaning pool 5 and are respectively connected to a plurality of fixed plates 22. The shape of the fixed plate 22 matches the membrane assembly 2. A plurality of cleaning nozzles 23 are arranged on the upper inner side of the cleaning pool 5. The cleaning nozzles 23 are externally connected to a water source for cleaning. An aeration blower 3 is arranged on the front side of the cleaning pool 5. The aeration blower 3 is connected to an aeration pipe 301. An aeration valve 302 is arranged on the aeration pipe 301. A water inlet pipe 24 is arranged on the front side of the cleaning pool 5. A first valve 401 is arranged on the water inlet pipe 24. The lower rear side of the cleaning pool 5 A water outlet is provided, and a second valve 25 is provided at the water outlet; when the membrane assembly 2 is placed in the cleaning tank 5, the cylinder 21 drives the fixing plate 22 to press and fix the membrane assembly 2, and the membrane assembly 2 is connected to the aeration pipe 301 and the water inlet pipe 24 of the cleaning tank 5. By adding cleaning agents into the cleaning tank 5, the water inlet pipe 24 transports water to backwash the membrane assembly 2 while aerating it. The bubbles generated by aeration can increase the turbulence of the water, which helps to loosen and remove pollutants on the membrane surface and improve the backwashing effect. After the backwashing is completed, the second valve 25 is opened to allow the cleaned water to flow out through the water outlet, and then the cleaning nozzle 23 sprays clean water to clean the residual agents or debris on the surface of the membrane assembly 2.

[0036] like Figure 2 As shown, a flow meter 102 and a controller 103 are also included. The flow meter 102 is provided at the water inlet pipe 101 of the reaction tank 1, and the flow meter 102 can measure the water flow through the water inlet pipe 101. The controller 103 is provided on the front side of the reaction tank 1. The flow meter 102 and the aeration blower 3 are both electrically connected to the controller 103; the flow meter 102 transmits the measured water flow data to the controller 103, and the controller 103 adjusts the aeration amount of the aeration blower 3 according to the measured data.

[0037] A Y-shaped groove is provided on the side of the positioning block 12 on the upper side of the fixing frame 10 close to the membrane assembly 2, and the opposite sides of the positioning blocks 12 on the front and rear sides of the pushing frame 11 are combined to form a Y-shaped groove, and the upper part of the Y-shaped groove of the positioning block 12 on the upper side of the fixing frame 10 contacts the upper part of the membrane assembly 2; the Y-shaped groove structure of the positioning block 12 can better position the membrane assembly 2 when resetting and compensate for certain positioning errors.

[0038] The fixing frame 10 is in V-shape at the contact point with the membrane assembly 2 and is matched with the four corners of the membrane assembly 2 ; the V-shape of the fixing frame 10 can fit tightly with the four corners of the membrane assembly 2 , thereby enhancing the stability of the membrane assembly 2 in the reaction tank 1 .

[0039] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An energy-saving composite biofilm reactor, comprising a reaction tank (1), a water inlet pipe (101) and a membrane assembly (2), wherein the water inlet pipe (101) is arranged at the rear side of the reaction tank (1), and the membrane assembly (2) is placed in the reaction tank (1), characterized in that: It also includes a pull ring (201), an extrusion block (202), an aeration blower (3), an aeration pipe (301), an aeration valve (302), a water outlet pipe (4), a first valve (401), a cleaning tank (5), a gantry (6), a lifting mechanism (7), a steel wire rope (71), a hook (72), a mounting block (8), a telescopic rod (9), a fixing frame (10), a pushing frame (11), a sliding frame (1101) and a positioning block (12), and a membrane assembly ( 2) A pull ring (201) is provided on the upper side of the membrane assembly (2), and extrusion blocks (202) are provided at the four corners of the lower part of the membrane assembly (2). An aeration blower (3) is installed on the front side of the reaction tank (1). An aeration pipe (301) is connected between the aeration blower (3) and the membrane assembly (2). An aeration valve (302) is provided in the middle of the aeration pipe (301). A water outlet pipe (4) is provided on the membrane assembly (2). Multiple water outlet pipes (4) merge into a water outlet main pipe. A valve (302) is installed between the water outlet pipe (4) and the water outlet main pipe. A first valve (401), a cleaning tank (5) is provided on the left side of the reaction tank (1), a gantry (6) is provided on the outside of the reaction tank (1) and the cleaning tank (5), a lifting mechanism (7) is slidably installed on the gantry (6), one end of a steel wire rope (71) is connected to the lifting mechanism (7), and the other end is connected to a hook (72), a plurality of mounting blocks (8) are provided in the reaction tank (1), a plurality of telescopic rods (9) are provided on the mounting blocks (8), and the telescopic rods (9) are connected to the fixed frame ( 10), the upper part of the fixed frame (10) contacts with the membrane assembly (2), the lower side of the fixed frame (10) is slidably connected with a sliding frame (1101), the sliding frame (1101) is rotatably connected with the pushing frame (11), the pushing frame (11) is rotatably connected with the bottom of the reaction tank (1), the lower part of the pushing frame (11) is provided with an extrusion groove, the extrusion groove contacts with the extrusion block (202), and positioning blocks (12) are provided on the front and rear sides of the pushing frame (11) and the upper side of the fixed frame (10).

2. An energy-saving composite biofilm reactor according to claim 1, characterized in that: It also includes a first limiting ring (14) and a second limiting ring (19); the first limiting ring (14) is provided on the positioning block (12) on the upper side of the fixing frame (10); the second limiting ring (19) is provided on the membrane assembly (2); and the first limiting ring (14) and the second limiting ring (19) are both provided with through holes of the same size in the middle.

3. An energy-saving composite biofilm reactor according to claim 2, characterized in that: The invention also comprises a first rotating frame (15), a sliding rod (16), a second rotating frame (17) and a limiting rod (18); the first rotating frame (15) is rotatably provided on both sides of the pull ring (201); the two first rotating frames (15) are respectively rotatably connected to the sliding rod (16); two second rotating frames (17) are rotatably provided on the sliding rod (16); the two second rotating frames (17) are respectively rotatably connected to the limiting rod (18); the sliding rod (16) and the limiting rod (18) are respectively slidably connected to a plurality of second limiting rings (19).

4. An energy-saving composite biofilm reactor according to claim 3, characterized in that: It also includes a limit block (13), a plurality of limit blocks (13) are arranged in the middle of the mounting block (8), the limit blocks (13) are slidably connected to the fixing frame (10) in groups of two, the left and right sides of the two limit blocks (13) in the same group opposite to each other are provided with protrusions, and the front and rear sides of the fixing frame (10) are provided with recesses matching the protrusions.

5. The energy-saving composite biofilm reactor according to claim 4, characterized in that: The invention also comprises a limit plate (20), wherein the limit plate (20) is arranged at the lower side of the lifting mechanism (7), the steel wire rope (71) is slidably connected to the upper side of the limit plate (20), a limit hole is opened in the middle of the limit plate (20), the steel wire rope (71) passes through the limit hole from top to bottom, and the lifting hook (72) is located at the lower side of the limit plate (20).

6. The energy-saving composite biofilm reactor according to claim 5, characterized in that: The cleaning tank (5) further comprises a cylinder (21), a fixing plate (22), a cleaning nozzle (23), a water inlet pipe (24) and a second valve (25). A plurality of cylinders (21) are installed on the side wall of the cleaning tank (5). The output shaft of the cylinder (21) is connected to the fixing plate (22). A plurality of cleaning nozzles (23) are arranged on the upper inner side of the cleaning tank (5). An aeration blower (3) is arranged on the front side of the cleaning tank (5). The aeration blower (3) is connected to an aeration pipe (301). An aeration valve (302) is arranged on the aeration pipe (301). A water inlet pipe (24) is arranged on the front side of the cleaning tank (5). A first valve (401) is arranged on the water inlet pipe (24). A water outlet is opened on the lower rear side of the cleaning tank (5). A second valve (25) is arranged at the water outlet.

7. The energy-saving composite biofilm reactor according to claim 6, characterized in that: The invention also comprises a flow meter (102) and a controller (103). The flow meter (102) is arranged at the water inlet pipe (101) of the reaction tank (1), and the controller (103) is arranged at the front side of the reaction tank (1). The flow meter (102) and the aeration blower (3) are both electrically connected to the controller (103).

8. The energy-saving composite biofilm reactor according to claim 7, characterized in that: A Y-shaped groove is provided on the side of the positioning block (12) on the upper side of the fixing frame (10) close to the membrane assembly (2), and the opposite sides of the positioning blocks (12) on the front and rear sides of the pushing frame (11) are combined to form a Y-shaped groove.

9. The energy-saving composite biofilm reactor according to claim 8, characterized in that: The contact point between the fixing frame (10) and the membrane assembly (2) is V-shaped and is matched with the four corners of the membrane assembly (2).

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