A backwashable ultrafiltration membrane group for sewage treatment

Abstract

The present invention relates to the technical field of ultrafiltration membrane groups, and specifically to an ultrafiltration membrane group that can be backwashed for sewage treatment, comprising an ultrafiltration membrane mechanism and a support plate, the front and rear walls of the ultrafiltration membrane mechanism are fixedly provided with support plates, the ultrafiltration membrane mechanism comprises a mounting frame, a filter membrane assembly is installed inside the mounting frame, a water inlet integrated pipe is installed on the top side of the right end of the filter membrane assembly, a backwash integrated pipe is installed on the bottom side of the right end of the filter membrane assembly, a water production integrated pipe is connected and installed on the top side of the left end of the filter membrane assembly, and a concentrated water integrated pipe is installed on the left end of the filter membrane assembly. The filter membrane body can be connected through the provided water inlet integrated pipe, backwash integrated pipe, water production integrated pipe and concentration integrated pipe, thereby facilitating the synchronous operation of four groups of filter membrane bodies to make work more convenient and quick, and the water valve can be opened and closed through the connection of the chain group, which is more convenient and quick to regulate during backwashing.

Description

Technical Field

[0001] The invention relates to the technical field of ultrafiltration membrane groups, in particular to an ultrafiltration membrane group capable of backwashing for sewage treatment. Background Art

[0002] In today's society, the protection and sustainable use of water resources are of vital importance. With the rapid development of industry, the growth of population and the acceleration of urbanization, the amount of sewage generated is increasing. Traditional sewage treatment methods have certain limitations in removing suspended particles, organic matter and bacteria. As an advanced separation technology, ultrafiltration membrane technology has gradually emerged in the field of sewage treatment. Ultrafiltration membrane groups can effectively remove suspended matter, colloids, bacteria and macromolecular organic matter in sewage, while retaining small molecules and ions that are beneficial to the environment and subsequent treatment processes. The working principle of ultrafiltration membrane groups is to use the microporous structure of the membrane to drive water and small molecules through the membrane pores under a certain pressure, while retaining larger particles. This technology has the advantages of high efficiency, energy saving, and simple operation. For example, the invention patent with announcement number CN104828908A discloses an automatic forward and reverse flushing ultrafiltration water purification system, which includes an inlet pipe, a sewage pipe, an outlet pipe, a control system and two identical internal pressure hollow fiber ultrafiltration membrane components. The internal pressure hollow fiber ultrafiltration membrane components are provided with a water inlet, a sewage outlet and a purified water outlet. The raw water inlet end is connected to the first electric ball valve and the second electric ball valve respectively through the inlet pipe, and the sewage outlet end is connected to the third electric ball valve and the fourth electric ball valve respectively through the sewage pipe, and the purified water outlet end is connected to the fifth electric ball valve through the outlet pipe. The present invention also provides a control method for the water purification system and an automatic forward and reverse flushing ultrafiltration reverse osmosis water purification system including the water purification system. The beneficial effect of the present invention is that the water purification system can automatically realize the forward flushing and back flushing of the ultrafiltration membrane when in use, which prolongs the service life of the membrane and is maintenance-free. Moreover, the water purification system can also provide ultrafiltration purified water and reverse osmosis pure water at the same time to meet people's use needs.

[0003] The forward and reverse flushing ultrafiltration water purification system in the prior art can meet the needs of use, but the filter membrane body needs to be cleaned in sequence during use. This process is time-consuming and increases the labor burden. In addition, for sewage treatment, it is easier for some larger particles that cannot be purified to accumulate inside, which makes cleaning difficult. When performing backwashing, it is necessary to adjust it in sequence before reverse flushing can be performed to achieve the purpose of cleaning the filter membrane body. This operation requires manual adjustment in sequence, which is not only physically demanding but also has certain safety hazards. Summary of the invention

[0004] The object of the present invention is to provide an ultrafiltration membrane group that can be backwashed for sewage treatment, so as to solve the problem proposed in the above background technology that the filter membrane body needs to be cleaned sequentially during the existing use. This process is time-consuming and increases the labor burden. In addition, for sewage treatment, it is easier for some larger particles that cannot be purified to accumulate inside, which makes cleaning difficult. When backwashing, it is necessary to adjust it sequentially before backwashing can be performed to achieve the purpose of cleaning the filter membrane body. This operation requires manual adjustment sequentially, which not only consumes physical strength but also has certain safety hazards.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a backwashable ultrafiltration membrane group for sewage treatment, comprising an ultrafiltration membrane mechanism and a support plate, the front and rear walls of the ultrafiltration membrane mechanism are fixedly provided with support plates, the ultrafiltration membrane mechanism comprises a mounting frame, a filter membrane assembly is installed inside the mounting frame, a water inlet integrated pipe is installed on the top side of the right end of the filter membrane assembly, a backwash integrated pipe is installed on the bottom side of the right end of the filter membrane assembly, a water production integrated pipe is connected to the top side of the left end of the filter membrane assembly, a concentrated water integrated pipe is installed on the left end of the filter membrane assembly, and both ends of the water inlet integrated pipe, the backwash integrated pipe, the water production integrated pipe and the concentrated water integrated pipe are fixedly provided on the inner wall of the support plate. A water valve is installed in the center of the water inlet integrated pipe and the backwash integrated pipe, the water valve includes a connecting pipe, an opening and closing component is inserted in the center of the connecting pipe, the opening and closing component is installed inside the limit box, a fixed block is provided at the left end of the ultrafiltration membrane mechanism, a driving mechanism is installed at the front end of the support plate, the driving mechanism includes a main fixed block, a driving component is installed at the front end of the main fixed block, a secondary fixed block is installed on the rear side of the right end of the driving component, a sealing component is sleeved in the center of the driving component, a transmission component is fixedly installed in the center of the right end of the mounting frame, the front end of the transmission component is connected to the right end of the driving component, and the front end of the transmission component is respectively provided with a chain group to connect the water valve.

[0006] Preferably, the filter membrane assembly is composed of four groups of filter membrane bodies, a water inlet is provided on the upper right side of a single group of filter membrane bodies, a flushing port is installed on the bottom right side of the filter membrane body, a water production port is installed on the left side of the top end of the filter membrane body, a concentrate water port is provided at the center of the left end of the filter membrane body, the top ends of the four groups of water inlets are connected to the inner bottom end of the water inlet integrated pipe, the bottom ends of the four groups of flushing ports are connected to the inner top end of the backwash integrated pipe, the top ends of the four groups of water production ports are connected to the inner bottom end of the water production integrated pipe, and the left ends of the four groups of concentrate water ports are connected to the inner right end of the concentrate water integrated pipe.

[0007] Preferably, a drain outlet is installed at the top of the water production integrated pipe, and the bottom end of the drain outlet is connected to the top ends of the four groups of water production outlets.

[0008] Preferably, a main drain pipe is fixedly provided on the outer side of the center of the concentrated water integrated pipe, the inner side of the main drain pipe is connected to the water production port, and a sealing component is sleeved on the outer side of the main drain pipe.

[0009] Preferably, a cylindrical block is installed on the inner left wall of the connecting pipe, a triangular groove is provided inside the cylindrical block, and a circular ring plate is installed on the center right side of the connecting pipe.

[0010] Preferably, the opening and closing assembly includes inner slide rails, which are installed on both sides of the inner wall of the limit box, inner slide blocks are inserted inside the two groups of inner slide rails, the outer sides of the inner slide blocks are fixed to the front and rear walls of the rack plate, a sliding column is fixed to the left side of the rack plate, a conical block is fixed to the left end of the sliding column, the left end of the conical block is embedded in the triangular groove, the top end of the rack plate meshes with the bottom end of the fixed gear, the fixed gear is fixed at the center of the limit shaft, the rear end of the limit shaft is inserted in the inner rear wall of the limit box, and the front end of the limit shaft extends through to the front end of the limit box.

[0011] Preferably, the driving assembly includes a servo motor, the right end of the servo motor is connected to the left end of the threaded rod through a connecting piece, the servo motor is installed on the front side of the top end of the fixed block, the right end of the threaded rod is sleeved in a limiting sleeve, the limiting sleeve is fixed at the front end of the auxiliary fixed block, and the left end of the threaded rod is sleeved with a threaded sleeve.

[0012] Preferably, the sealing assembly includes a connecting rod, the front end of the connecting rod is connected to the rear end of the threaded sleeve, a connecting plate is provided at the right center of the connecting rod, a sealing cover is fixed to the right end of the connecting plate, the rear end of the connecting rod moves to the front end of the outer slide rail, the rear end of the outer slide rail is fixed to the front end of the limit block, and the right end of the limit block is fixed to the left side of the rear support plate.

[0013] Preferably, the transmission assembly includes a first rotating shaft, which is inserted into the outer wall of the right end of the mounting frame, the right end of the transmission belt group is sleeved on the center of the first rotating shaft, the left end of the transmission belt group is connected to the right end of the threaded rod, and the right end of the first rotating shaft is fixed with a first bevel tooth.

[0014] Preferably, the rear end of the first bevel tooth engages with the front end of the second bevel tooth, the second bevel tooth is fixed at the front end of the second rotating shaft, the rear end of the second rotating shaft is inserted in the front end of the pad, the pad is fixed to the right end outer wall of the mounting frame, the right side of the front end of the first bevel tooth engages with the left side of the third bevel tooth, the third bevel tooth is fixed at the rear end of the third rotating shaft, the front end of the third rotating shaft is inserted in the right rear end of the auxiliary fixed block, and the centers of the third rotating shaft and the second rotating shaft are respectively provided with front ends of chain groups connecting the limiting rotating shafts.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By setting the bottom side of the water inlet of the filter membrane body and adding a set of flushing ports, the filter membrane body can be flushed forward and backward, which improves the cleaning efficiency and reduces the working time. The four groups of filter membrane bodies are connected in parallel to form a whole. Through this device, cleaning can be carried out more effectively and quickly without separate cleaning, reducing people's workload. The water inlet integrated pipe, backwashing integrated pipe, water production integrated pipe and concentration integrated pipe can be connected with the filter membrane body, so as to facilitate the synchronous operation of the four groups of filter membrane bodies and make the work more convenient and quick;

[0017] 2. The water source can be controlled by setting a connecting pipe to connect with the water inlet integrated pipe. The sliding column provided inside can fit the conical block into the triangular groove inside the cylindrical block under the movement of the rack plate to improve the sealing and facilitate internal flushing. The limit column can be driven by the driving mechanism to reversely operate the two groups of water valves, one group opens the valve and the other closes the valve. This design facilitates operation and reduces manual operation time;

[0018] 3. By setting a servo motor in the driving assembly, the threaded rod can be driven to rotate, so that the threaded sleeve set in the center can be moved to drive the sealing assembly to move. This design makes it easy to move to the left end of the filter membrane assembly without manual docking, reducing safety hazards. The sealing cover provided in the sealing assembly can be sealed to facilitate subsequent backwashing;

[0019] 4. While the above structure is designed, the first bevel gear rotates to drive the second bevel gear and the third bevel gear to rotate in the opposite direction, thereby causing the second rotating shaft and the third rotating shaft to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a top view schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0023] Figure 3 It is a cross-sectional schematic diagram of the filtration membrane assembly of the present invention;

[0024] Figure 4 This is a schematic diagram of the main structure of the filtration membrane of the present invention;

[0025] Figure 5 It is a top view schematic diagram of the internal structure of the water valve of the present invention;

[0026] Figure 6 It is a cross-sectional schematic diagram of the internal structure of the water valve of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the driving mechanism of the present invention;

[0028] Figure 8 It is a schematic diagram of the structure of the driving component of the present invention.

[0029] In the figure: 1, ultrafiltration membrane mechanism; 11, mounting frame; 12, filter membrane assembly; 121, filter membrane body; 122, water inlet; 123, flushing port; 124, water outlet; 125, concentrated water outlet; 13, water inlet integrated pipe; 14, backwash integrated pipe; 15, water outlet integrated pipe; 151, drain outlet; 16, concentrated water integrated pipe; 161, main drain pipe; 2, support plate; 3, water valve; 31, connecting pipe; 311, cylindrical block; 312, triangular groove; 313, circular ring plate; 32, limit box; 33, opening and closing assembly; 331, inner slide rail; 332, inner slider; 333, rack plate; 334, sliding column; 335, conical block; 33 6. Limiting shaft; 337. Fixed gear; 4. Fixed block; 5. Driving mechanism; 51. Main fixed block; 52. Driving assembly; 521. Servo motor; 522. Connecting piece; 523. Threaded rod; 524. Limiting sleeve; 525. Threaded sleeve; 53. Sealing assembly; 531. Connecting rod; 532. Connecting plate; 533. Sealing cover; 534. Outer slide rail; 535. Limiting block; 54. Auxiliary fixed block; 6. Transmission assembly; 61. First rotating shaft; 62. Transmission belt assembly; 63. First bevel gear; 64. Second bevel gear; 65. Second rotating shaft; 66. Pad; 67. Third bevel gear; 68. Third rotating shaft; 7. Chain assembly. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 8An embodiment of the present invention is as follows: a backwashable ultrafiltration membrane group for sewage treatment comprises an ultrafiltration membrane mechanism 1 and a support plate 2, the front and rear walls of the ultrafiltration membrane mechanism 1 are fixedly provided with the support plate 2, the ultrafiltration membrane mechanism 1 comprises a mounting frame 11, a filter membrane assembly 12 is installed inside the mounting frame 11, a water inlet integrated pipe 13 is installed on the top side of the right end of the filter membrane assembly 12, a backwash integrated pipe 14 is installed on the bottom side of the right end of the filter membrane assembly 12, a water production integrated pipe 15 is connected to the top side of the left end of the filter membrane assembly 12, a concentrated water integrated pipe 16 is installed on the left end of the filter membrane assembly 12, and both ends of the water inlet integrated pipe 13, the backwash integrated pipe 14, the water production integrated pipe 15 and the concentrated water integrated pipe 16 are fixedly provided on the inner wall of the support plate 2, and the water inlet integrated pipe 13, the backwash integrated pipe 14, the water production integrated pipe 15 and the concentrated water integrated pipe 16 are fixedly provided on the inner wall of the support plate 2, and the water inlet integrated pipe 13 is installed on the top side of the right end of the filter membrane assembly 12. A water valve 3 is installed in the center of the forming pipe 13 and the backwash integrated pipe 14. The water valve 3 includes a connecting pipe 31. An opening and closing component 33 is inserted in the center of the connecting pipe 31. The opening and closing component 33 is installed in the limit box 32. A fixing block 4 is provided at the left end of the ultrafiltration membrane mechanism 1. A driving mechanism 5 is installed at the front end of the support plate 2. The driving mechanism 5 includes a main fixing block 51. A driving component 52 is installed at the front end of the main fixing block 51. A secondary fixing block 54 is installed on the rear side of the right end of the driving component 52. A sealing component 53 is sleeved in the center of the driving component 52. A transmission component 6 is fixedly installed in the center of the right end of the mounting frame 11. The front end of the transmission component 6 is connected to the right end of the driving component 52. A chain group 7 is provided at the front end of the transmission component 6 to connect the water valve 3.

[0032] As a further feature of the present invention, the filter membrane assembly 12 is composed of four groups of filter membrane bodies 121, a water inlet 122 is provided on the upper right side of a single group of filter membrane bodies 121, a flushing port 123 is installed on the bottom right side of the filter membrane body 121, a water production port 124 is installed on the left side of the top end of the filter membrane body 121, and a concentrate water port 125 is provided at the center of the left end of the filter membrane body 121, the top ends of the four groups of water inlets 122 are connected to the inner bottom end of the water inlet integrated pipe 13, the bottom ends of the four groups of flushing ports 123 are connected to the inner top end of the backwash integrated pipe 14, the top ends of the four groups of water production ports 124 are connected to the inner bottom end of the water production integrated pipe 15, the left ends of the four groups of concentrate water ports 125 are connected to the inner right end of the concentrate water integrated pipe 16, and a group of flushing ports are added on the bottom side of the water inlet of the filter membrane body to facilitate forward and reverse flushing of the filter membrane body.

[0033] Furthermore, a drain port 151 is installed at the top of the water production integrated pipe 15, and the bottom end of the drain port 151 is connected to the top of the four groups of water production ports 124, so as to facilitate the discharge of the filtered pure water.

[0034] Furthermore, a main drain pipe 161 is fixedly provided on the central outer side of the concentrated water integrated pipe 16, the inner side of the main drain pipe 161 is connected to the water outlet 124, and a sealing component 53 is sleeved on the outer side of the main drain pipe 161 to prevent water from being discharged from the concentrated water outlet during backwashing.

[0035] As a further feature of the present invention, a cylindrical block 311 is installed on the inner left wall of the connecting pipe 31, a triangular groove 312 is provided inside the cylindrical block 311, and a circular ring plate 313 is installed on the center right side of the connecting pipe 31 to improve the sealing performance and facilitate internal flushing.

[0036] The cam 332 is a substantially parallelogram of the first and second cams 336, respectively, and the cam 336 is a substantially parallelogram of the first and second cams 337. The cam 336 is a substantially parallelogram of the first and second cams 338. The cam 336 is a substantially parallelogram of the first and second cams 339.

[0037] Furthermore, the driving assembly 52 includes a servo motor 521, the right end of the servo motor 521 is connected to the left end of the threaded rod 523 through a connecting piece 522, the servo motor 521 is installed on the front side of the top end of the fixed block 4, the right end of the threaded rod 523 is sleeved in a limiting sleeve 524, the limiting sleeve 524 is fixed to the front end of the auxiliary fixed block 54, and the left end of the threaded rod 523 is sleeved with a threaded sleeve 525, which is convenient for moving to the left end of the filter membrane assembly without manual docking.

[0038] Furthermore, the sealing assembly 53 includes a connecting rod 531, the front end of the connecting rod 531 is connected to the rear end of the threaded sleeve 525, a connecting plate 532 is provided at the right center of the connecting rod 531, a sealing cover 533 is fixed to the right end of the connecting plate 532, the rear end of the connecting rod 531 moves to the front end of the outer slide rail 534, the rear end of the outer slide rail 534 is fixed to the front end of the limit block 535, the right end of the limit block 535 is fixed to the left side of the rear support plate 2, and can be sealed by the sealing cover provided in the sealing assembly, which is convenient for subsequent backwashing.

[0039] As a further feature of the present invention, the transmission assembly 6 includes a first rotating shaft 61, the first rotating shaft 61 is inserted into the outer wall of the right end of the mounting frame 11, the right end of the transmission belt group 62 is sleeved in the center of the first rotating shaft 61, the left end of the transmission belt group 62 is connected to the right end of the threaded rod 523, the right end of the first rotating shaft 61 is fixedly provided with a first bevel tooth 63, the rear end of the first bevel tooth 63 is engaged with the front end of the second bevel tooth 64, the second bevel tooth 64 is fixedly provided at the front end of the second rotating shaft 65, the rear end of the second rotating shaft 65 is inserted into It is arranged at the front end of the pad 66, and the pad 66 is fixed on the outer wall of the right end of the mounting frame 11. The right side of the front end of the first bevel tooth 63 engages with the left side of the third bevel tooth 67. The third bevel tooth 67 is fixed at the rear end of the third rotating shaft 68. The front end of the third rotating shaft 68 is inserted into the right rear end of the auxiliary fixed block 54. The centers of the third rotating shaft 68 and the second rotating shaft 65 are respectively provided with chain groups 7 connecting the front ends of the limiting rotating shaft 336. The connection of the chain group facilitates the opening and closing of the water valve and makes it more convenient and quick to adjust during recoil.

[0040] Working principle: During operation, when flushing is required, the servo motor 521 is powered on and started, and the threaded rod 523 is driven to rotate in the limiting sleeve 524 through the connecting piece 522. When the threaded rod 524 rotates, the threaded sleeve 525 set in the center can be driven to move. When the threaded sleeve 525 moves, the connecting rod 531 connected to the rear end can be driven to move through the outer slide rail 534 at the rear end. When the threaded sleeve 525 drives the connecting rod 531 to move to the specified position, the connecting plate 532 set in the center of the right end of the connecting rod 531 moves synchronously to cover the fixed sealing cover 533 on the outside of the main drain pipe 161 for flushing. The threaded rod 523 is sealed, and the rotating belt group 62 connected to the right end is driven to rotate when the threaded rod 523 rotates. The rotating belt group 62 can drive the first rotating shaft 61 to rotate when it rotates. The first rotating shaft 61 can drive the first bevel gear 63 fixed at the left end to rotate when it rotates. The first bevel gear 63 can rotate to engage the second bevel gear 64 at the rear end to rotate. The second bevel gear 64 can rotate to drive the inserted second rotating shaft 65 to rotate. The second rotating shaft 65 can drive the water valve 3 installed at the top of the top water inlet integrated pipe 13 to work through the chain group 7 fixed at the center. The chain group 7 drives the limiter extending to the outside of the limit box 32 The rotating shaft 336 rotates, and the rotation of the limit rotating shaft 336 can drive the fixed gear 337 fixed in the center to rotate. The fixed gear 337 rotates to engage the rack plate 333 at the bottom. With the assistance of the inner sliding block 332 fixed at the front and rear ends, the sliding column 334 fixed at the left end can be moved. When the sliding column 334 moves, the conical block 335 fixed at the left end can be pushed into the triangular groove 312 opened in the cylindrical block 311 through the circular ring plate 313 to complete the sealing. At the same time, the first bevel gear 63 can reversely engage the third bevel gear 67 to rotate, and the third bevel gear 67 can drive the third rotating shaft 68 to rotate. The reverse rotation drives the chain group 7 to drive the limiting shaft 336 in the water valve 3 connected to the bottom end of the recoil integrated pipe 14 to rotate in the reverse direction, thereby separating the conical block 335 on the bottom side from the triangular groove 312, thereby opening the recoil integrated pipe 14, and then pouring the pressurized water source into the drain port 151 and then backflowing the water source into the water production port 124 of the four groups of filter membrane bodies 121 through the water production integrated pipe 15 for reverse flushing. The flushed water is collected into the recoil integrated pipe 13 through the flushing port 123 at the right end and then discharged through the water valve 3. When the backwashing is completed, the servo motor 521 is started in the reverse direction to restore the original position and continue filtering.

[0041] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A backwashable ultrafiltration membrane group for sewage treatment, comprising an ultrafiltration membrane mechanism (1) and a support plate (2), wherein the support plate (2) is fixedly provided on the front and rear walls of the ultrafiltration membrane mechanism (1), characterized in that: The ultrafiltration membrane mechanism (1) comprises a mounting frame (11), a filtration membrane assembly (12) is mounted inside the mounting frame (11), the filtration membrane assembly (12) is composed of four groups of filtration membrane bodies (121), a water inlet (122) is provided on the upper right side of a single group of filtration membrane bodies (121), a flushing port (123) is mounted on the lower right side of the filtration membrane bodies (121), a water production port (124) is mounted on the left side of the top end of the filtration membrane bodies (121), a concentrated water port (125) is provided at the center of the left end of the filtration membrane bodies (121), the top ends of the four groups of water inlets (122) are connected to the inner bottom end of a water inlet integrated pipe (13), the bottom ends of the four groups of flushing ports (123) are connected to the inner top end of a backwash integrated pipe (14), the top ends of the four groups of water production ports (124) are connected to the inner bottom end of a water production integrated pipe (15), and the left ends of the four groups of concentrated water ports (125) are connected to the inner bottom end of a water production integrated pipe (15). connected to the inner right end of the concentrated water integrated pipe (16); a water inlet integrated pipe (13) is installed on the top side of the right end of the filtering membrane assembly (12); a recoil integrated pipe (14) is installed on the bottom side of the right end of the filtering membrane assembly (12); a water production integrated pipe (15) is connected to the top side of the left end of the filtering membrane assembly (12); a concentrated water integrated pipe (16) is installed on the left end of the filtering membrane assembly (12); a main drainage pipe (161) is fixedly arranged on the outer side of the center of the concentrated water integrated pipe (16); the inner side of the main drainage pipe (161) is connected to the water production port (124); a sealing assembly (53) is sleeved on the outer side of the main drainage pipe (161); both ends of the water inlet integrated pipe (13), the recoil integrated pipe (14), the water production integrated pipe (15) and the concentrated water integrated pipe (16) are fixedly arranged on the inner wall of the support plate (2); and a water valve (3) is installed in the center of each of the water inlet integrated pipe (13) and the recoil integrated pipe (14); The water valve (3) comprises a connecting pipe (31), a cylindrical block (311) is installed on the inner left wall of the connecting pipe (31), a triangular groove (312) is provided inside the cylindrical block (311), a circular ring plate (313) is installed on the right side of the center of the connecting pipe (31), an opening and closing component (33) is inserted in the center of the connecting pipe (31), the opening and closing component (33) is installed inside the limit box (32), the opening and closing component (33) comprises inner slide rails (331), the inner slide rails (331) are installed on both sides of the inner wall of the limit box (32), inner slide blocks (332) are inserted inside the two sets of the inner slide rails (331), and the outer side of the inner slide block (332) is fixed to the rack plate (333). ), a sliding column (334) is fixedly provided on the left side of the rack plate (333), a conical block (335) is fixedly provided on the left end of the sliding column (334), the left end of the conical block (335) is embedded in the triangular groove (312), the top end of the rack plate (333) is engaged with the bottom end of the fixed gear (337), the fixed gear (337) is fixedly provided at the center of the limit rotating shaft (336), the rear end of the limit rotating shaft (336) is inserted into the inner rear wall of the limit box (32), the front end of the limit rotating shaft (336) extends through and extends to the front end of the limit box (32), the left end of the ultrafiltration membrane mechanism (1) is provided with a fixed block (4), and the front end of the support plate (2) is installed with a driving mechanism (5), the driving mechanism (5) comprises a main fixed block (51), a driving assembly (52) is installed at the front end of the main fixed block (51), the driving assembly (52) comprises a servo motor (521), the right end of the servo motor (521) is connected to the left end of a threaded rod (523) through a connecting piece (522), the servo motor (521) is installed on the front side of the top end of the fixed block (4), the right end of the threaded rod (523) is sleeved in a limiting sleeve (524), the limiting sleeve (524) is fixedly mounted on the front end of the auxiliary fixed block (54), the left end of the threaded rod (523) is sleeved with a threaded sleeve (525), and the auxiliary fixed block (52) is installed at the rear side of the right end of the driving assembly (52). 4), a sealing assembly (53) is sleeved at the center of the driving assembly (52), the sealing assembly (53) comprising a connecting rod (531), the front end of the connecting rod (531) is connected to the rear end of the threaded sleeve (525), a connecting plate (532) is provided at the center of the right side of the connecting rod (531), a sealing cover (533) is fixedly provided at the right end of the connecting plate (532), the rear end of the connecting rod (531) moves at the front end of the outer slide rail (534), the rear end of the outer slide rail (534) is fixedly provided at the front end of the limit block (535), the right end of the limit block (535) is fixedly provided at the left side of the rear support plate (2), and a transmission assembly (6) is fixedly provided at the center of the right end of the mounting frame (11); The transmission assembly (6) comprises a first rotating shaft (61), the first rotating shaft (61) is inserted into the outer wall of the right end of the mounting frame (11), the right end of a transmission belt group (62) is sleeved on the center of the first rotating shaft (61), the left end of the transmission belt group (62) is connected to the right end of the threaded rod (523), the right end of the first rotating shaft (61) is fixedly provided with a first bevel tooth (63), the front end of the transmission assembly (6) is connected to the right end of the driving assembly (52), the rear end of the first bevel tooth (63) meshes with the front end of a second bevel tooth (64), the second bevel tooth (64) is fixedly provided at the front end of a second rotating shaft (65), and the first bevel tooth (63) is fixedly provided at the front end of the second rotating shaft (65). The rear ends of the second rotating shafts (65) are inserted into the front ends of the pads (66), the pads (66) are fixedly mounted on the outer wall of the right end of the mounting frame (11), the right side of the front end of the first bevel gear (63) meshes with the left side of the third bevel gear (67), the third bevel gear (67) is fixedly mounted on the rear end of the third rotating shaft (68), the front end of the third rotating shaft (68) is inserted into the right rear end of the auxiliary fixed block (54), the centers of the third rotating shaft (68) and the second rotating shaft (65) are respectively provided with chain groups (7) connected to the front ends of the limiting rotating shaft (336), and the front ends of the transmission components (6) are respectively provided with chain groups (7) connected to the water valve (3).

2. The backwashable ultrafiltration membrane group for sewage treatment according to claim 1, characterized in that: A drainage port (151) is installed at the top end of the water production integrated pipe (15), and the bottom end of the drainage port (151) is connected to the top ends of the four groups of water production ports (124).

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