CN115745154A

CN115745154A - MBR membrane bioreactor sewage treatment plant

Info

Publication number: CN115745154A
Application number: CN202211617239.4A
Authority: CN
Inventors: 姚树群; 高杨; 刘英志
Original assignee: Qingdao Haiheng Dongsheng Testing Technology Co ltd
Current assignee: Qingdao Haiheng Dongsheng Testing Technology Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-03-07

Abstract

The invention discloses a sewage treatment device of an MBR (membrane bioreactor), belonging to the technical field of sewage treatment. The utility model provides a MBR membrane bioreactor sewage treatment plant, includes the install bin, be provided with first installation cavity and second installation cavity in the install bin, still include: the hollow shaft is rotationally connected to the first mounting cavity and the second mounting cavity partition plate; the mounting plate is fixedly connected to the hollow shaft, a mounting support is fixedly connected to the mounting plate, and a flow collecting box is fixedly connected to the top of the mounting support; one end of the membrane tube is fixedly connected with the mounting disc, and the other end of the membrane tube is communicated with the flow collecting box; according to the MBR membrane bioreactor sewage treatment device, the mounting disc drives the membrane tube to wind in water in a reciprocating manner, so that the membrane tube is rubbed and collided with water, stains on the outer wall of the membrane tube are thrown away, stains adsorbed on the membrane tube are reduced, the times of cleaning the membrane tube in relative time are reduced, and the use efficiency is improved.

Description

MBR membrane bioreactor sewage treatment plant

Technical Field

The invention relates to the technical field of sewage treatment, in particular to a sewage treatment device of an MBR (membrane bioreactor).

Background

In the sewage treatment in the field of environmental management, after the biochemical treatment process flow is finished, in order to ensure the effluent quality and reduce the effluent impurities, a membrane component is usually used for replacing a secondary sedimentation tank at the tail end of the traditional biological treatment technology, the concentration of high-activity sludge is kept in a bioreactor, the biological treatment organic load is improved, the occupied area of a sewage treatment facility is reduced, and the residual sludge amount is reduced by keeping the low sludge load.

Through retrieval, for example, patent No. CN201610310172.8 discloses an integrated sewage treatment device, which comprises an MBR membrane bioreactor, a UV tank and a lifting device, wherein one side of the MBR membrane bioreactor is provided with the lifting device, and the other side is provided with the UV tank; the inner wall of the MBR membrane bioreactor is provided with a membrane assembly, and the membrane assembly is provided with a filler frame; the bottom of the MBR membrane bioreactor is provided with an aeration pipe, one end of the aeration pipe is connected with a lifting device, the aeration pipe is provided with a micropore aeration port, a lifting pump is arranged in the lifting device, a lifting pipe is arranged outside the lifting device, and the lifting pipe is communicated with the MBR membrane bioreactor; a UV lamp holder is arranged on the inner wall of the UV tank, a UV lamp tube is arranged on the UV lamp holder, a membrane water outlet pipe is arranged on the inner wall of one side of the UV tank, which is close to the MBR membrane bioreactor, and the membrane water outlet pipe is communicated with the membrane module; the device carries out main sewage treatment through biomembrane and milipore filter for whole device treatment effeciency is high, takes up an area of for a short time, high-efficient reliable of sewage dwell.

Above-mentioned patent is at the in-process MBR membrane (being called for membrane tube for short) that uses, and the filtration pore on the membrane tube is blockked up by the pollution easily, just needs the manual work to wash the membrane tube at every use a period, in relative time, needs to wash it many times, and it is inconvenient to use many times.

Disclosure of Invention

The invention aims to solve the problem that membrane tubes need to be cleaned frequently in the prior art, and provides a sewage treatment device of an MBR (membrane bioreactor).

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a MBR membrane bioreactor sewage treatment plant, includes the install bin, be provided with first installation cavity and second installation cavity in the install bin, still include: the hollow shaft is rotatably connected to the first mounting cavity and the second mounting cavity partition plate; the mounting plate is fixedly connected to the hollow shaft, a mounting bracket is fixedly connected to the mounting plate, and the top of the mounting bracket is fixedly connected with a flow collecting box; one end of the membrane tube is fixedly connected with the mounting disc, and the other end of the membrane tube is communicated with the flow gathering box; the suction pump is fixedly connected to the outside of the installation box, and the input end of the suction pump is fixedly connected with a drain pipe which is rotatably connected with the flow gathering box; the rotating shaft is rotatably connected in the second mounting cavity and is fixedly connected with a reciprocating gear disc; the installation axle of connecting in the second installation cavity bottom rotates, install epaxial fixedly connected with and the first drive gear of reciprocating gear dish internal tooth engaged with, the installation axle passes through spur gear group synchronous rotation with the pivot.

In order to further clear up the outer wall of the membrane tube, preferably, a first reciprocating screw rod is fixedly connected in the second installation cavity, the first reciprocating screw rod penetrates through the hollow shaft to extend into the first installation cavity to be connected with the flow gathering box in a rotating mode, the first reciprocating screw rod is connected with the hollow shaft through a sealing rotating ring, a scraping disc is connected to the first reciprocating screw rod in a threaded mode, a plurality of lantern rings are arranged on the scraping disc, and the inner wall of each lantern ring is attached to the outer wall of the membrane tube.

In order to facilitate sending sewage into the sewage tank, preferably, be provided with the sewage tank in the install bin, be provided with the filter screen between sewage tank and the first installation cavity, fixedly connected with takes out dirty pump on the outer wall of install bin, take out the output fixedly connected with three way connection of dirty pump, three way connection's output fixedly connected with and the dirty pipe of advancing of sewage tank intercommunication.

For further carrying out mud-water separation, preferably, the effluent water sump internal rotation is connected with the installation pipe, the installation pipe slope sets up in the install bin, the filtration pore has been seted up on the outer wall that the installation pipe extends to first installation cavity top.

In order to collect mud for the convenience, preferably, fixedly connected with bin on the outer wall of install bin, fixedly connected with arranges the material pipe with the first that the bin links to each other on the install bin, first row of material pipe with the install bin rotates and links to each other, the first control valve of bottom fixedly connected with of bin.

In order to facilitate the discharge of the dirt in the first mounting cavity, preferably, a second discharge pipe is fixedly connected to the bottom of the mounting box and is connected with the bottom of the first mounting cavity, and a second control valve is fixedly connected to the second discharge pipe.

Preferably, the installation box is internally fixed with the connecting partition plate, the installation pipe rotates with the connecting partition plate and links to each other, fixedly connected with second motor on the inner wall of installation box, the output shaft of second motor passes through sprocket group with the installation pipe and rotates in step, the intraductal rotation of installation is connected with the auger, the first motor of fixedly connected with in the second installation cavity, the output of first motor links to each other with the axle of auger is fixed.

Preferably, the second installation cavity is rotatably connected with a first transmission shaft, the first transmission shaft synchronously rotates with a shaft of the packing auger through a first bevel gear set, and the first transmission shaft and the rotating shaft synchronously rotate through a second bevel gear set.

In order to facilitate cleaning of the filter screen and the membrane tube, preferably, a second reciprocating screw rod is rotatably connected to a partition plate of the first installation cavity and the second installation cavity, the second reciprocating screw rod and the first transmission shaft synchronously rotate through a fourth bevel gear set, a flow distribution box is in threaded connection with the second reciprocating screw rod, two sides of the flow distribution box are respectively and fixedly connected with spray heads facing the filter screen and the membrane tube, and the two first transmission shafts synchronously rotate through a belt wheel set.

Preferably, fixedly connected with piston cylinder in the second installation cavity, sliding connection has the piston board in the piston cylinder, the last rotation connection of piston board has the crank, the second installation cavity internal rotation is connected with the secondary drive axle, fixedly connected with bent axle on the secondary drive axle, the bent axle rotates with the crank and links to each other, the secondary drive axle passes through third bevel gear group synchronous rotation with first transmission shaft, the second pipeline that the output fixedly connected with of piston cylinder links to each other with the flow distribution box, the first pipeline of input fixedly connected with of piston cylinder, first pipeline extends to the fixedly connected with three way control valve outside the installation box.

Compared with the prior art, the invention provides an MBR (membrane bioreactor) sewage treatment device, which has the following beneficial effects:

1. this MBR membrane bioreactor sewage treatment plant drives the reciprocal winding of membrane tube in aqueous through the mounting disc, makes membrane tube and water friction collision to throw away the spot on the membrane tube outer wall, thereby reduce the spot that adsorbs on the membrane tube, reduce the abluent number of times of membrane tube in relative time, improve its availability factor.

2. This MBR membrane bioreactor sewage treatment plant sprays clear water to the membrane tube through the shower nozzle, utilizes the clear water to wash the membrane tube to need not the labour cost and wash, reduce the cost of labor.

3. This MBR membrane bioreactor sewage treatment plant makes the inside interpolation of install bin not pass and gathers the flow box, drives the reciprocal winding of membrane pipe in aqueous through the mounting disc, makes membrane pipe and clear water friction collision, washs the membrane pipe automatically.

Drawings

FIG. 1 is a schematic diagram of a first three-dimensional structure of a MBR membrane bioreactor sewage treatment device provided by the invention;

FIG. 2 is a schematic diagram of a second three-dimensional structure of a MBR membrane bioreactor sewage treatment unit provided by the present invention;

FIG. 3 is a first schematic diagram of an explosion structure of a MBR membrane bioreactor sewage treatment unit according to the present invention;

FIG. 4 is a schematic diagram of an explosion structure of a MBR membrane bioreactor sewage treatment unit, which is provided by the invention;

FIG. 5 is a schematic structural diagram of part A in FIG. 4 of an MBR membrane bioreactor sewage treatment unit provided by the present invention;

FIG. 6 is a partial sectional view of a MBR membrane bioreactor sewage treatment unit according to the present invention;

FIG. 7 is a partial sectional view of a MBR membrane bioreactor sewage treatment unit according to the present invention;

FIG. 8 is a schematic structural diagram of a mounting bracket of an MBR membrane bioreactor sewage treatment unit provided by the invention.

In the figure: 1. installing a box; 2. a sewage tank; 3. a first mounting cavity; 4. filtering with a screen; 5. connecting the partition boards; 6. a second mounting cavity; 7. a hollow shaft; 8. installing a disc; 9. mounting a bracket; 10. a first reciprocating screw rod; 11. a flow collecting box; 12. a suction pump; 13. a drain pipe; 14. a membrane tube; 15. a scraping disc; 16. a collar; 17. a first motor; 18. a first drive shaft; 19. a first bevel gear set; 20. installing a shaft; 21. a second bevel gear set; 22. a reciprocating gear plate; 221. a rotating shaft; 23. a first drive gear; 24. a spur gear set; 25. a pulley block; 26. a piston cylinder; 27. a piston plate; 28. a crank; 29. a second drive shaft; 30. a crankshaft; 301. a third bevel gear set; 31. a second reciprocating screw rod; 32. a shunt box; 33. a spray head; 34. a fourth bevel gear set; 35. a packing auger; 36. installing a pipe; 37. filtering holes; 38. a first discharging pipe; 39. a second motor; 40. a sprocket set; 41. a sewage pump; 42. a three-way joint; 43. a sewage inlet pipe; 44. a first pipe; 45. a three-way control valve; 46. a storage tank; 47. a first control valve; 48. a second conduit; 49. a second discharge conduit.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The embodiment is as follows:

referring to fig. 1-8, an MBR membrane bioreactor sewage treatment plant includes install bin 1, is provided with first installation cavity 3 and second installation cavity 6 in the install bin 1, still includes: a hollow shaft 7 is rotatably connected to the partition board of the first mounting cavity 3 and the second mounting cavity 6; the mounting disc 8 is fixedly connected to the hollow shaft 7, the mounting disc 8 is fixedly connected with a mounting bracket 9, and the top of the mounting bracket 9 is fixedly connected with a flow collecting box 11; one end of the membrane tube 14 is fixedly connected with the mounting disc 8, and the other end of the membrane tube is communicated with the flow gathering box 11; a suction pump 12 fixedly connected to the outside of the installation box 1, wherein the input end of the suction pump 12 is fixedly connected with a drain pipe 13 rotatably connected with the flow gathering box 11; a rotating shaft 221 rotatably connected in the second mounting cavity 6, wherein a reciprocating gear disc 22 is fixedly connected on the rotating shaft 221; the mounting shaft 20 is rotatably connected to the bottom of the second mounting cavity 6, a first transmission gear 23 meshed with the inner teeth of the reciprocating gear disc 22 is fixedly connected to the mounting shaft 20, and the mounting shaft 20 and the rotating shaft 221 rotate synchronously through a spur gear set 24.

The suction pump 12 is started, the suction pump 12 enables the flow gathering box 11 to generate negative pressure, the membrane tube 14 is enabled to generate negative pressure, water is sucked into the membrane tube 14 through holes in the membrane tube 14, water and stains are separated, then water is discharged, the rotating shaft 221 is driven to rotate through the driving part, the rotating shaft 221 drives the reciprocating gear disc 22 to rotate, the reciprocating gear disc 22 drives the mounting shaft 20 to rotate in a reciprocating mode through the first transmission gear 23, the mounting shaft 20 drives the hollow shaft 7 to rotate through the straight gear set 24, the hollow shaft 7 drives the mounting disc 8 to rotate, the mounting disc 8 drives the flow gathering box 11 to rotate through the mounting support 9, the MBR membrane tube 14 is driven to perform reciprocating friction and collision with the water, the stains adsorbed on the outer surface of the membrane tube 14 are thrown away, the stains adsorbed on the membrane tube 14 are reduced, the number of times of cleaning the membrane tube 14 in relative time is reduced, the use efficiency is improved, the number of manual cleaning is reduced, the labor cost is reduced, the number of manual cleaning can be reduced, the membrane tube 14 can be added into the mounting box 1 without passing through the flow gathering box 11, the membrane tube 14 is driven in the water through the mounting disc 8, the membrane tube 14, the reciprocating friction and the cleaning coils and the membrane tube 14 can be automatically cleaned by the cleaning.

Referring to fig. 5, 6 and 8, a first reciprocating screw rod 10 is fixedly connected in the second mounting cavity 6, the first reciprocating screw rod 10 penetrates through the hollow shaft 7, extends into the first mounting cavity 3, is rotatably connected with the flow collecting box 11, and is connected with the hollow shaft 7 through a sealing rotating ring, a scraping disc 15 is in threaded connection with the first reciprocating screw rod 10, a plurality of lantern rings 16 are arranged on the scraping disc 15, and the inner walls of the lantern rings 16 are attached to the outer walls of the membrane tubes 14.

When the mounting disc 8 rotates, the mounting bracket 9 drives the scraping disc 15 to rotate, the scraping disc 15 rotates, the reciprocating thread on the first reciprocating screw rod 10 reciprocates on the mounting bracket 9, the scraping disc 15 reciprocates and goes up and down, and the inner wall of the lantern ring 16 scrapes the outer wall of the membrane tube 14, so that the stains adsorbed on the membrane tube 14 are cleaned, and the hole of the membrane tube 14 is further prevented from being blocked.

Referring to fig. 1-6, a sewage tank 2 is arranged in an installation box 1, a filter screen 4 is arranged between the sewage tank 2 and a first installation cavity 3, a sewage pumping pump 41 is fixedly connected to the outer wall of the installation box 1, a three-way joint 42 is fixedly connected to the output end of the sewage pumping pump 41, and a sewage inlet pipe 43 communicated with the sewage tank 2 is fixedly connected to the output end of the three-way joint 42.

The sewage pumping pump 41 is started, sewage mixed with garbage such as sludge is sucked at the input end of the sewage pumping pump 41 and then is discharged into the two sewage inlet pipes 43 through the three-way connector 42 respectively, so that the sewage flows into the two sewage pools 2 respectively, the sewage is filtered through the filter screen 4, the sewage is separated for the first time, water flows into the first installation cavity 3 through the filter screen 4 and is filtered by the membrane pipe 14 for the second time, and stains such as sludge sink into the bottom of the sewage pool 2.

Referring to fig. 6, the 2 internal rotations in effluent water sump are connected with installation pipe 36, the slope of installation pipe 36 sets up in install bin 1, install pipe 36 has seted up filtration pore 37 on extending to the outer wall of first installation cavity 3 top, fixedly connected with bin 46 on the outer wall of install bin 1, fixedly connected with first row's material pipe 38 that links to each other with bin 46 on the install bin 1, first row's material pipe 38 rotates with installation pipe 36 and links to each other, bin 46's the first control valve 47 of bottom fixedly connected with, fixedly connected with baffle 5 in the install bin 1, installation pipe 36 rotates with connecting baffle 5 and links to each other, fixedly connected with second motor 39 on the inner wall of install bin 1, the output shaft of second motor 39 passes through sprocket group 40 synchronous rotation with installation pipe 36, the internal rotation of installation pipe 36 is connected with auger 35, fixedly connected with first motor 17 in the second installation cavity 6, the output of first motor 17 links to each other with auger 35's axle is fixed.

The first motor 17 is started, the auger 35 is driven to rotate by the first motor 17, the second motor 39 is started, the two mounting pipes 36 are driven to rotate by the second motor 39 through the chain wheel group 40, when the auger 35 rotates in the same direction as the mounting pipes 36, the rotating speed of the auger 35 is larger than that of the mounting pipes 36, when the rotating direction of the auger 35 is opposite to that of the mounting pipes 36, the rotating speed of the auger 35 is smaller than that of the mounting pipes 36, wherein the auger 35 rotates to convey sludge and other sediments at the bottom of the sewage pool 2 into the mounting pipes 36, the sludge and other sediments are conveyed into the storage tank 46 through the mounting pipes 36, the sludge and other sediments in the storage tank 46 can be discharged by opening the first control valve 47, and when the sludge and other sediments are conveyed in the mounting pipes 36, the sludge and other sediments pass through the upper part of the first mounting cavity 3, water in the sludge and other sediments is thrown into the first mounting cavity 3 through the filter holes 37 on the mounting pipes 36, and filter cloth is arranged on the filter holes 37 and used for improving the filtering effect.

Referring to fig. 1 to 7, a second discharging pipe 49 is fixedly connected to the bottom of the installation box 1, the second discharging pipe 49 is connected to the bottom of the first installation cavity 3, a second control valve is fixedly connected to the second discharging pipe 49, a first transmission shaft 18 is rotatably connected to the second installation cavity 6, the first transmission shaft 18 rotates synchronously with a shaft of the auger 35 through a first bevel gear set 19, the first transmission shaft 18 and the rotation shaft 221 rotate synchronously through a second bevel gear set 21, a second reciprocating lead screw 31 is rotatably connected to a partition between the first installation cavity 3 and the second installation cavity 6, the second reciprocating lead screw 31 and the first transmission shaft 18 rotate synchronously through a fourth bevel gear set 34, a diversion box 32 is threadedly connected to the second reciprocating lead screw 31, two sides of the diversion box 32 are respectively and fixedly connected with a spray head 33 facing the filter screen 4 and the membrane tube 14, two first transmission shafts 18 rotate synchronously through a belt wheel set 25, a piston cylinder 26 is fixedly connected to the second installation cavity 6, a piston cylinder 26 is connected to the piston cylinder 26, a crank plate 27 is connected to the piston plate 27, a second installation cavity 6 is connected to a second transmission shaft 29, a second transmission shaft 29 is fixedly connected to the crank shaft 29, a third transmission shaft 29, a piston cylinder 26 is rotatably connected to the piston cylinder 26, an output end of the third transmission shaft is connected to the piston cylinder, and a third transmission shaft 29 is connected to the piston cylinder 19, and a third piston cylinder 19 is connected to the piston cylinder 19, and a third crank shaft 6.

The auger 35 drives the first transmission shaft 18 to rotate through the first bevel gear set 19, the first transmission shaft 18 drives the rotating shaft 221 to rotate through the second bevel gear set 21, simultaneously the first transmission shaft 18 drives the second transmission shaft 29 to rotate through the third bevel gear set 301, the second transmission shaft 29 drives the crankshaft 30 to rotate, the crankshaft 30 enables the piston plate 27 to slide in the piston cylinder 26 in a reciprocating manner through the crank 28, the input end and the output end of the piston cylinder 26 are respectively provided with a one-way valve, the three-way control valve 45 is provided with two input ports, one input port is communicated with the outside of the installation box 1, the other input port can be communicated with a clean water source, in the process of treating sewage, the piston cylinder 26 is used for sucking external air, and then the air is sent into the flow dividing box 32 through the second pipeline 48, the sewage is sprayed out through the spray heads 33 on the two sides of the flow dividing box 32 and respectively sprayed to the membrane tube 14 and the filter screen 4, the filter screen 4 is flushed, sludge and the like adsorbed on one surface of the sewage pool 2 of the filter screen 4 are flushed, the filter screen 4 is prevented from being blocked by the sludge and the like, meanwhile, the first transmission shaft 18 drives the second reciprocating screw rod 31 to rotate through the fourth bevel gear set 34, the flow dividing box 32 reciprocates on the second reciprocating screw rod 31 and is matched with gas sprayed out by the spray heads 33, when the sewage is stopped to be treated, the piston cylinder 26 is communicated with a water source, clear water is sprayed to the filter screen 4 and the membrane tube 14 to flush the two, then the second control valve is opened, stains in the first installation cavity 3 are discharged through the second discharge tube 49, the membrane tube 14 is automatically cleaned, and manual cleaning is not needed.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a MBR membrane bioreactor sewage treatment plant, includes install bin (1), its characterized in that, be provided with first installation cavity (3) and second installation cavity (6) in install bin (1), still include:

a hollow shaft (7) rotatably connected to the partition plate of the first mounting cavity (3) and the second mounting cavity (6);

the mounting plate (8) is fixedly connected to the hollow shaft (7), a mounting bracket (9) is fixedly connected to the mounting plate (8), and the top of the mounting bracket (9) is fixedly connected with a flow collecting box (11);

one end of the membrane tube (14) is fixedly connected with the mounting disc (8), and the other end of the membrane tube is communicated with the flow gathering box (11);

the suction pump (12) is fixedly connected to the outer part of the installation box (1), and the input end of the suction pump (12) is fixedly connected with a drain pipe (13) which is rotatably connected with the flow gathering box (11);

a rotating shaft (221) rotatably connected in the second mounting cavity (6), wherein a reciprocating gear disc (22) is fixedly connected to the rotating shaft (221);

rotate to be connected installation axle (20) of second installation cavity (6) bottom, fixedly connected with and reciprocating gear dish (22) internal tooth engaged with first drive gear (23) on installation axle (20), installation axle (20) and pivot (221) are through spur gear group (24) synchronous rotation.

2. The MBR (membrane bioreactor) sewage treatment device according to claim 1, wherein a first reciprocating screw rod (10) is fixedly connected in the second installation cavity (6), the first reciprocating screw rod (10) passes through a hollow shaft (7) and extends into the first installation cavity (3) to be rotatably connected with a flow collecting box (11), and is connected with the hollow shaft (7) through a sealing rotating ring, a scraping disc (15) is connected to the first reciprocating screw rod (10) in a threaded manner, a plurality of lantern rings (16) are arranged on the scraping disc (15), and the inner walls of the lantern rings (16) are attached to the outer walls of the membrane tubes (14).

3. The MBR (membrane bioreactor) sewage treatment device according to claim 1, wherein a sewage tank (2) is arranged in the installation box (1), a filter screen (4) is arranged between the sewage tank (2) and the first installation cavity (3), a sewage suction pump (41) is fixedly connected to the outer wall of the installation box (1), a three-way joint (42) is fixedly connected to the output end of the sewage suction pump (41), and a sewage inlet pipe (43) communicated with the sewage tank (2) is fixedly connected to the output end of the three-way joint (42).

4. The MBR (membrane bioreactor) sewage treatment device according to claim 3, wherein the sewage tank (2) is rotatably connected with a mounting pipe (36), the mounting pipe (36) is obliquely arranged in the mounting box (1), and the mounting pipe (36) extends to the outer wall above the first mounting cavity (3) and is provided with a filtering hole (37).

5. The MBR (membrane bioreactor) sewage treatment device according to claim 4, wherein a storage tank (46) is fixedly connected to the outer wall of the installation box (1), a first discharging pipe (38) connected with the storage tank (46) is fixedly connected to the installation box (1), the first discharging pipe (38) is rotatably connected with the installation pipe (36), and a first control valve (47) is fixedly connected to the bottom of the storage tank (46).

6. The MBR membrane bioreactor sewage treatment unit according to claim 4, wherein the bottom of the installation box (1) is fixedly connected with a second discharging pipe (49), the second discharging pipe (49) is connected with the bottom of the first installation cavity (3), and a second control valve is fixedly connected on the second discharging pipe (49).

7. The MBR membrane bioreactor sewage treatment device according to claim 4, wherein the installation box (1) is internally and fixedly connected with a partition plate (5), the installation pipe (36) is rotatably connected with the partition plate (5), the inner wall of the installation box (1) is fixedly connected with a second motor (39), the output shaft of the second motor (39) and the installation pipe (36) synchronously rotate through a chain wheel set (40), the installation pipe (36) is rotatably connected with an auger (35), the second installation cavity (6) is internally and fixedly connected with a first motor (17), and the output end of the first motor (17) is fixedly connected with the shaft of the auger (35).

8. The MBR membrane bioreactor sewage treatment unit according to claim 7, wherein a first transmission shaft (18) is rotatably connected in the second installation cavity (6), the first transmission shaft (18) and a shaft of the auger (35) synchronously rotate through a first bevel gear set (19), and the first transmission shaft (18) and the rotating shaft (221) synchronously rotate through a second bevel gear set (21).

9. The MBR (membrane bioreactor) sewage treatment device according to claim 8, wherein a second reciprocating screw rod (31) is rotatably connected to a partition plate of the first installation cavity (3) and the second installation cavity (6), the second reciprocating screw rod (31) and the first transmission shaft (18) synchronously rotate through a fourth bevel gear set (34), a flow dividing box (32) is connected to the second reciprocating screw rod (31) in a threaded manner, nozzles (33) facing the filter screen (4) and the membrane pipe (14) are respectively and fixedly connected to two sides of the flow dividing box (32), and the two first transmission shafts (18) synchronously rotate through a pulley set (25).

10. The MBR (membrane bioreactor) sewage treatment device according to claim 9, wherein a piston cylinder (26) is fixedly connected in the second installation cavity (6), a piston plate (27) is slidably connected in the piston cylinder (26), a crank (28) is rotatably connected to the piston plate (27), a second transmission shaft (29) is rotatably connected in the second installation cavity (6), a crank shaft (30) is fixedly connected to the second transmission shaft (29), the crank shaft (30) is rotatably connected with the crank (28), the second transmission shaft (29) and the first transmission shaft (18) synchronously rotate through a third bevel gear set (301), a second pipeline (48) connected with the diversion box (32) is fixedly connected to an output end of the piston cylinder (26), a first pipeline (44) is fixedly connected to an input end of the piston cylinder (26), and the first pipeline (44) extends to the outside of the installation box (1) and is fixedly connected with a three-way control valve (45).