Ultrafiltration membrane module with self-cleaning function for industrial wastewater

Abstract

The application relates to the technical field of wastewater treatment, in particular to an ultrafiltration membrane assembly with a self-cleaning function for industrial wastewater. The ultrafiltration membrane assembly comprises symmetrically-distributed supports, a sewage tank and a water storage tank are arranged between the symmetrically-distributed supports, a treatment pipeline is fixedly connected between the symmetrically-distributed supports, a filter assembly is arranged in the treatment pipeline, the filter assembly comprises a sliding shell which is slidingly connected to the inner wall of the treatment pipeline, the sliding shell is fixedly connected with an inner shell through an outer shell, an ultrafiltration membrane piece is fixedly connected between the outer shell and the inner shell, and the treatment pipeline is provided with a limiting assembly. The ultrafiltration membrane piece is washed when the industrial wastewater directly flows out of the ultrafiltration membrane piece, and then the impurities are carried out of the ultrafiltration membrane piece, so that the filtering effect of the ultrafiltration membrane piece is ensured. The limiting assembly limits the sliding shell, so that the intermediate connecting pipe and the sewage pipe are in communication, the intermediate connecting pipe and the sewage pipe are prevented from being disconnected due to the reduction of pressure, so that the cleaning effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater treatment, and particularly relates to an ultrafiltration membrane assembly with self-cleaning function for industrial wastewater. BACKGROUND

[0002] The ultrafiltration membrane is an artificial membrane for separating suspended particles or high-molecular colloids of a certain size in a solution. Due to its excellent filtering performance, the ultrafiltration membrane is often applied to the advanced treatment of industrial wastewater and process water. Nowadays, under the change of the environment, the treatment method and result of the industrial wastewater are particularly important, so the role of the ultrafiltration membrane is self-evident.

[0003] When the existing ultrafiltration membrane filters the industrial wastewater, impurities in the industrial wastewater are high, so the impurities are accumulated in the ultrafiltration membrane during the filtration. With the increase of the filtration time, the impurities will block the ultrafiltration membrane, so that the effective area of the ultrafiltration membrane is reduced, and the filtration speed of the ultrafiltration membrane for the industrial wastewater is reduced. In order to solve the above problems, the ultrafiltration membrane needs to be cleaned irregularly. However, manual cleaning is not only time-consuming and laborious, but also has poor cleaning effect. SUMMARY

[0004] In order to overcome the defects that the impurities are easily accumulated to cause blockage during the filtration of the existing ultrafiltration membrane, the effective area of the ultrafiltration membrane is reduced, and the filtration speed of the ultrafiltration membrane for the industrial wastewater is reduced, and manual cleaning is not only time-consuming and laborious, but also has poor cleaning effect, the present application provides an ultrafiltration membrane assembly with self-cleaning function for industrial wastewater.

[0005] The technical scheme is as follows: an ultrafiltration membrane assembly with self-cleaning function for industrial wastewater filtering assembly, including symmetrically distributed supports, a sewage tank and a water storage tank are arranged between the symmetrically distributed supports, a water inlet pipe is fixedly connected to the support on one side of the sewage tank, a treatment pipeline is fixedly connected between the symmetrically distributed supports, the treatment pipeline is communicated with the water inlet pipe, a water passing pipe is communicated between the water storage tank and the treatment pipeline, a sewage pipe is communicated between the sewage tank and the treatment pipeline, a filtering assembly for filtering water is arranged in the treatment pipeline, the filtering assembly includes a sliding shell, the sliding shell is slidingly connected to the inner wall of the treatment pipeline, an outer shell is fixedly connected to the sliding shell, an inner shell is fixedly connected to the outer shell, an ultrafiltration membrane piece is fixedly connected between the outer shell and the inner shell, the outer shell and the inner shell are both provided with through holes for water passing, an intermediate connecting pipe is fixedly connected between the sliding shell and the outer shell, the treatment pipeline is provided with a forward washing mechanism for cleaning the ultrafiltration membrane piece, and the treatment pipeline is provided with a limiting assembly for limiting the sliding shell.

[0006] Preferably, the length of the ultrafiltration membrane piece is less than the length of the outer shell, and the intermediate connecting pipe is located between the inner shell and the ultrafiltration membrane piece.

[0007] Preferably, the forward washing mechanism comprises a shell fixedly connected to the outer wall of the treatment pipe, a first electric push rod installed in the shell, a supporting frame fixedly connected to the extension end of the first electric push rod, a sealing plate fixedly connected to the supporting frame, and a fixed ring fixedly connected to the sealing plate, wherein the sealing plate and the fixed ring are in sliding connection with the treatment pipe, and the fixed ring is fixedly connected with the sliding shell through the first elastic element.

[0008] Preferably, the limiting assembly comprises a first limiting block in sliding connection with the treatment pipe, a second elastic element fixedly connected between the first limiting block and the shell, a first guide rod fixedly connected to the first limiting block and in sliding connection with the shell, a second limiting block in sliding connection with the treatment pipe, a first inner hole provided in the first limiting block, a second inner hole provided in the second limiting block, the first limiting block and the second limiting block being matched with the sliding shell, a third elastic element fixedly connected between the second limiting block and the shell, and a second guide rod fixedly connected to the second limiting block and in sliding connection with the shell.

[0009] Preferably, one end of the supporting frame close to the first limiting block is fixedly connected with a limiting protrusion, and the first limiting block and the second limiting block are matched with the limiting protrusion of the supporting frame.

[0010] Preferably, one side of the first limiting block and the second limiting block close to the first electric push rod is provided as an inclined surface for abutting against the limiting protrusion of the supporting frame.

[0011] Preferably, the reverse washing mechanism is further provided, and the reverse washing mechanism is arranged in the water storage tank and comprises a water pump installed on one side of the water storage tank close to the treatment pipe, a moving pipe in sliding connection with the inside of the treatment pipe, the moving pipe being matched with the end face of the water pipe close to the treatment pipe, the moving pipe being provided with a water inlet hole, a water suction pipe in communication between the water pump and the treatment pipe, a first water outlet shell fixedly connected to the inside of the moving pipe, a second water outlet shell provided with the first water outlet shell, the first water outlet shell and the second water outlet shell being provided with water holes arranged in a circular array along their respective axes, a cavity formed between the moving pipe, the first water outlet shell and the second water outlet shell, the cavity being in communication with the inside of the treatment pipe through the water holes, a second electric push rod installed on the treatment pipe, and the extension end of the second electric push rod being fixedly connected with the moving pipe.

[0012] Preferably, the first water outlet shell is a circular shell with an inner wall diameter greater than an outer wall diameter.

[0013] Preferably, a drive motor is installed on one side of the moving pipe, an output shaft of the drive motor is fixedly connected with the second water outlet shell, a first turbulence element is fixedly connected to the second water outlet shell at equal distances along the axial direction of the second water outlet shell, a second turbulence element is fixedly connected to one end of the inner shell close to the first elastic element, a plurality of third limiting blocks are fixedly connected to one end of the second water outlet shell in a circumferential distribution, the third limiting blocks are matched with the second turbulence element, and a drain pipe is in communication between the treatment pipe and the sewage tank.

[0014] Preferably, the second water outlet shell is a circular shell with an outer wall diameter less than the inner wall diameter of the inner shell.

[0015] The present application has the following advantages: the industrial wastewater directly flows through the intermediate connecting pipe and the sewage pipe to the ultrafiltration membrane, the fast flowing industrial wastewater in the process performs positive washing and flushing to the ultrafiltration membrane, and then carries the impurities to be discharged from the ultrafiltration membrane, so as to ensure the filtering effect of the ultrafiltration membrane; the first limiting block limits the sliding shell, prevents the left and right shaking of the sliding shell due to the different blockage states of the impurities in the sliding shell, improves the stability during filtering the industrial wastewater, and improves the filtering effect; the second limiting block limits the sliding shell, so that the intermediate connecting pipe and the sewage pipe are in communication, preventing the intermediate connecting pipe and the sewage pipe from being disconnected due to the reduction of pressure, so as to ensure thorough positive washing and improve the cleaning effect; the impurities accumulated in the ultrafiltration membrane are backwashed through the through holes of the clean water self-outer shell and the inner shell, so as to improve the cleaning effect of the ultrafiltration membrane; the backwashing water flow flows out from the left and right ends of the ultrafiltration membrane, reduces the discharge resistance, so as to improve the effect of the backwashing water flow on the impurities, and then improves the cleaning effect and efficiency. BRIEF DESCRIPTION OF DRAWINGS

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

[0017] Figure 2 It is a whole three-dimensional structure sectional view of the present application.

[0018] Figure 3 It is a three-dimensional structure schematic diagram of the positive washing mechanism and other parts of the present application.

[0019] Figure 4 It is an exploded view of the sliding shell, the outer shell and the inner shell and other parts of the present application.

[0020] Figure 5 It is a three-dimensional structure schematic diagram of the filtering assembly and other parts of the present application.

[0021] Figure 6 It is a three-dimensional structure schematic diagram of the positive washing mechanism and the limiting assembly of the present application.

[0022] Figure 7 It is a three-dimensional structure schematic diagram of part of the limiting assembly of the present application.

[0023] Figure 8 It is a three-dimensional structure schematic diagram of part of the backwashing mechanism of the present application.

[0024] Figure 9 It is a three-dimensional structure schematic diagram of part of the moving pipe, the first water outlet shell, the second water outlet shell and other parts of the present application.

[0025] Figure 10It is a part of the reverse washing mechanism of the application.

[0026] Figure 11 It is a part of the reverse washing mechanism of the application. Figure 10 It is a part of the reverse washing mechanism of the application.

[0027] Wherein: 1- support, 2- sewage tank, 3- water storage tank, 41- water inlet pipe, 42- treatment pipeline, 43- water pipe, 44- sewage pipe, 5- filter assembly, 51- sliding shell, 52- outer shell, 53- inner shell, 54- ultrafiltration membrane, 55- intermediate connecting pipe, 6- forward washing mechanism, 61- shell, 62- first electric push rod, 63- support frame, 64- sealing plate, 65- fixed ring, 66- first elastic element, 7- limiting assembly, 71- first limiting block, 72- second elastic element, 73- first guide rod, 74- second limiting block, 75- third elastic element, 76- second guide rod, 8- reverse washing mechanism, 81- water pump, 82- moving pipe, 83- water suction pipe, 84- first water outlet shell, 85- second water outlet shell, 86- driving motor, 87- first turbulence piece, 88- second turbulence piece, 89- third limiting block, 9- second electric push rod, 10- drain pipe. DETAILED DESCRIPTION

[0028] The application will be further described in conjunction with specific examples. It should be noted that unless otherwise specified and limited, terms such as: setting, installing, connecting should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements, and for those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0029] Example 1: an ultrafiltration membrane assembly with self-cleaning function for industrial wastewater, as shown in Figures 1-6As shown, including two symmetrical supports 1, the sewage tank 2 and the water storage tank 3 are arranged between the two symmetrical supports 1 from left to right in sequence, the right support 1 is fixedly connected with the water inlet pipe 41, the two symmetrical supports 1 are fixedly connected with the treatment pipeline 42, the treatment pipeline 42 communicates with the water inlet pipe 41, the water storage tank 3 communicates with the treatment pipeline 42 through the water pipe 43, the sewage tank 2 communicates with the treatment pipeline 42 through the sewage pipe 44, the treatment pipeline 42 is provided with a filter assembly 5 for filtering industrial wastewater, the filter assembly 5 comprises a sliding shell 51, the sliding shell 51 is slidably connected to the inner wall of the treatment pipeline 42, the sliding shell 51 is fixedly connected with the outer shell 52, the outer shell 52 is fixedly connected with the inner shell 53, the outer shell 52 and the inner shell 53 are fixedly connected with the ultrafiltration membrane piece 54, the length of the ultrafiltration membrane piece 54 is less than the length of the outer shell 52, the outer shell 52 and the inner shell 53 are provided with through holes for water, the clean water produced after the industrial wastewater is filtered through the ultrafiltration membrane piece 54 flows out from the through holes of the outer shell 52 and the inner shell 53 respectively, the water flow area is increased, and the filtering efficiency is improved, the sliding shell 51 and the outer shell 52 are fixedly connected with the intermediate connecting pipe 55, and the intermediate connecting pipe 55 is located between the inner shell 53 and the ultrafiltration membrane piece 54, the sewage directly flows out of the ultrafiltration membrane piece 54 through the communication between the intermediate connecting pipe 55 and the sewage pipe 44, and the impurities in the ultrafiltration membrane piece 54 are carried away, so that the ultrafiltration membrane piece 54 is washed when it is blocked, and the accumulation of impurities caused by the increase of the use time of the ultrafiltration membrane piece 54 is avoided, so that the normal operation of the filtering work is ensured, the filtering effect is improved, the treatment pipeline 42 is provided with a washing mechanism 6 for cleaning the ultrafiltration membrane piece 54, and the treatment pipeline 42 is provided with a limiting assembly 7 for limiting the sliding shell 51.

[0030] As shown in Figure 3 , the washing mechanism 6 comprises a shell 61 fixedly connected to the outer wall of the treatment pipeline 42, a first electric push rod 62 mounted in the shell 61, a support frame 63 fixedly connected to the extension end of the first electric push rod 62, a sealing plate 64 fixedly connected to the support frame 63, for ensuring the sealing of the treatment pipeline 42 when the support frame 63 moves, preventing industrial wastewater from leaking due to the gap generated when the support frame 63 moves, and causing pollution, a fixed ring 65 fixedly connected to the sealing plate 64, the sealing plate 64 and the fixed ring 65 are slidably connected with the treatment pipeline 42, and the first elastic element 66 for resetting the sliding shell 51 is fixedly connected between the fixed ring 65 and the sliding shell 51, the first elastic element 66 is a spring.

[0031] As shown in Figure 3 , Figure 6 , and Figure 7As shown, the limiting component 7 comprises a first limiting block 71, the first limiting block 71 is slidingly connected to the treatment pipeline 42, the right end of the support frame 63 is fixedly connected with a limiting protrusion, the first limiting block 71 and the shell 61 are fixedly connected with a second elastic element 72, the second elastic element 72 is a compressed spring, the first limiting block 71 is fixedly connected with a first guide rod 73, the sliding shell 51 is limited by the first limiting block 71, preventing the left and right shaking of the sliding shell 51 due to the different blockage states of impurities in it, thereby improving the stability when filtering industrial wastewater, and further improving the filtering effect, the first guide rod 73 is slidingly connected with the shell 61, the treatment pipeline 42 is slidingly connected with a second limiting block 74, the left side of the first limiting block 71 and the second limiting block 74 are provided as inclined surfaces, for abutting with the limiting protrusion of the support frame 63, facilitating the resetting of the first limiting block 71 and the second limiting block 74, the first limiting block 71 is provided with a first inner hole, the second limiting block 74 is provided with a second inner hole, the support frame 63 is located in the first inner hole and the second inner hole of the first limiting block 71 and the second limiting block 74, the first limiting block 71 and the second limiting block 74 are matched with the limiting protrusion of the support frame 63, the first limiting block 71 and the second limiting block 74 are matched with the sliding shell 51, the sliding of the sliding shell 51 is limited by the second limiting block 74, so that the intermediate connecting pipe 55 and the sewage pipe 44 are in communication, preventing the disconnection of the intermediate connecting pipe 55 and the sewage pipe 44 due to the reduction of pressure, thereby ensuring thorough washing and improving the cleaning effect, the second limiting block 74 and the shell 61 are fixedly connected with a third elastic element 75, the third elastic element 75 is a compressed spring, the second limiting block 74 is fixedly connected with a second guide rod 76, and the second guide rod 76 is slidingly connected with the shell 61.

[0032] When the device is used to filter industrial wastewater, the worker passes the wastewater into the treatment pipeline 42 through the water inlet pipe 41, the industrial wastewater starts to move to the left in the treatment pipeline 42, and then enters the ultrafiltration membrane piece 54, under the action of external pressure, the industrial wastewater slowly moves in the ultrafiltration membrane piece 54, the ultrafiltration membrane piece 54 separates the impurities in the industrial wastewater, thereby achieving the filtering effect, the industrial wastewater filtered by the ultrafiltration membrane piece 54 enters the treatment pipeline 42 through the through hole of the outer shell 52 and the inner shell 53, and then the filtered industrial wastewater enters the water storage tank 3 through the water pipe 43.

[0033] With the increase of the working time of the device, the impurities separated by the ultrafiltration membrane 54 are more and more, and the impurities gradually block the ultrafiltration membrane 54, causing the water permeability of the ultrafiltration membrane 54 to gradually decrease, the pressure in the right end area of the treatment pipeline 42 to gradually increase, and the ultrafiltration membrane 54 to start moving to the left. The ultrafiltration membrane 54 drives the outer shell 52, the inner shell 53, and the sliding shell 51 to move to the left together, and the sliding shell 51 starts to compress the first elastic element 66. When the sliding shell 51 moves past the first limiting block 71, the first limiting block 71 loses the limitation of the sliding shell 51, and the first limiting block 71 starts to move downward under the action of the compressed second elastic element 72. Until the upper side of the first inner hole of the first limiting block 71 contacts the upper side of the support frame 63, at this time the left side of the first limiting block 71 is in close contact with the right side of the sliding shell 51, and the first limiting block 71 limits the sliding shell 51, preventing the sliding shell 51 from shaking left and right due to different blockage states of impurities in it, improving the stability during the filtration of industrial wastewater, and improving the filtration effect.

[0034] With the continuous accumulation of impurities in the ultrafiltration membrane 54, the sliding shell 51 continues to move to the left, and the first elastic element 66 is further compressed. Until the first elastic element 66 is compressed to the limit state, the operator starts the first electric push rod 62, and the extension end of the first electric push rod 62 drives the support frame 63 and the parts on it to move to the left together. The limiting protrusion of the support frame 63 is separated from the second inner hole of the second limiting block 74. With the left end of the first elastic element 66 moving to the left, its elastic force gradually decreases, and under the action of the pressure in the right end area of the treatment pipeline 42, the ultrafiltration membrane 54 drives the outer shell 52, the inner shell 53, and the sliding shell 51 to continue to move to the left together. When the outer shell 52 moves past the second limiting block 74, the operator turns off the first electric push rod 62, and the second limiting block 74 starts to move downward under the action of the compressed third elastic element 75. Until the upper side of the second inner hole of the second limiting block 74 contacts the upper side of the support frame 63, at this time the left side of the second limiting block 74 is in close contact with the right side of the sliding shell 51, and the second limiting block 74 limits the sliding shell 51.

[0035] When the left side of the second limiting block 74 is in close contact with the right side of the sliding shell 51, the axis of the intermediate connecting pipe 55 is collinear with the axis of the sewage pipe 44, and the two are connected. The industrial wastewater with high pressure directly passes through the intermediate connecting pipe 55 and the sewage pipe 44 to discharge from the ultrafiltration membrane 54. The fast-flowing industrial wastewater in the process performs positive washing and flushing on the ultrafiltration membrane 54, and then carries the impurities together to discharge from the ultrafiltration membrane 54, thereby ensuring the filtration effect of the ultrafiltration membrane 54. Through the limitation of the second limiting block 74 to the sliding shell 51, the intermediate connecting pipe 55 and the sewage pipe 44 are in a connected state, preventing the intermediate connecting pipe 55 and the sewage pipe 44 from being disconnected due to the decrease of the pressure, thereby ensuring thorough positive washing and improving the cleaning effect.

[0036] After the completion of the forward washing, the staff starts the first electric push rod 62 again, and the telescopic end of the first electric push rod 62 drives the support frame 63 and the parts thereon to move to the right together. Since the second limiting block 74 still limits the sliding shell 51, the first elastic element 66 is further compressed. When the limiting protrusion of the support frame 63 moves to contact the inclined surface of the second limiting block 74, the second limiting block 74 starts to move upward under the extrusion of the limiting protrusion of the support frame 63, until the second limiting block 74 loses the limitation on the sliding shell 51, and the third elastic element 75 is compressed to the original compression state. Then, the sliding shell 51 starts to move to the right under the action of the elasticity of the first elastic element 66, and the intermediate connecting pipe 55 and the sewage pipe 44 are disconnected, until the lower side of the second limiting block 74 is attached to the upper side area adjacent to the sliding shell 51. Then, the limiting protrusion of the support frame 63 resets the first limiting block 71, and the second elastic element 72 is compressed to the original compression state. Then, the staff controls the telescopic end of the first electric push rod 62 to move to the left, and the telescopic end of the first electric push rod 62 drives the limiting protrusion of the support frame 63 and the parts thereon to move to the left together, until the limiting protrusion of the support frame 63 is separated from the inner hole of the first limiting block 71. The staff turns off the first electric push rod 62, and thus the cleaning of the ultrafiltration membrane piece 54 is completed.

[0037] Example 2: Based on Example 1, as Figure 1 , Figure 2 and Figures 8-10As shown, it also includes a backwashing mechanism 8, which is located on the upper side of the water storage tank 3. The backwashing mechanism 8 includes a water pump 81, which is installed on the upper side of the water storage tank 3. A movable pipe 82 is slidably connected inside the treatment pipe 42. When the movable pipe 82 is above the water pipe 43, the movable pipe 82 blocks the water pipe 43. A water inlet is provided on the lower side of the movable pipe 82. A suction pipe 83 connects the water pump 81 and the treatment pipe 42. A first water outlet shell 84 is fixedly connected to the inner side of the movable pipe 82. The first water outlet shell 84 is a circular shell with an inner diameter larger than the outer wall of the outer shell 52, so that the backwash water flowing out of the first water outlet shell 84 can fully contact the through hole on the outer shell 52, increasing the backwash area and thus improving the backwash effect. A second water outlet shell is provided on the first water outlet shell 84. 85. The second water outlet shell 85 is a circular shell with an outer wall diameter smaller than that of the inner shell 53, so that the backwash water flowing out of the second water outlet shell 85 can fully contact the through holes on the inner shell 53, increasing the backwash area and thus improving the backwash effect. The first water outlet shell 84 and the second water outlet shell 85 are both provided with water holes arranged in a uniform array along their respective axes. The moving pipe 82, the first water outlet shell 84 and the second water outlet shell 85 form a cavity. This cavity is connected to the interior of the treatment pipe 42 through the water holes. The treatment pipe 42 is equipped with a second electric push rod 9. The telescopic end of the second electric push rod 9 is fixedly connected to the moving pipe 82. The purified water flows in reverse from the through holes of the outer shell 52 and the inner shell 53 to backwash the impurities accumulated in the ultrafiltration membrane 54, thereby improving the cleaning effect of the ultrafiltration membrane 54.

[0038] like Figure 5 and Figures 9-11 As shown, a drive motor 86 is installed on the left side of the moving pipe 82. The output shaft of the drive motor 86 is fixedly connected to the second outlet shell 85. The second outlet shell 85 is fixedly connected with a first turbulence member 87 at equal intervals along its axial direction. The left end of the inner shell 53 is fixedly connected with a second turbulence member 88. The rotation of the first turbulence member 87 and the second turbulence member 88 strengthens the intensity of the backwash water vortex, further improving the cleaning effect on the ultrafiltration membrane 54. The left end of the second outlet shell 85 is fixedly connected with a circumferentially distributed third limiting block 89. When the third limiting block 89 moves into the second turbulence member 88, the third limiting block 89 and the second turbulence member 88 are limited and matched. A drain pipe 10 is connected between the treatment pipe 42 and the sewage tank 2. The backwash water flowing out of the ultrafiltration membrane 54 is discharged through the sewage pipe 44 and the drain pipe 10 respectively, reducing the discharge resistance, thereby improving the effect of the backwash water flow on impurities, and thus improving the cleaning effect and efficiency.

[0039] When the ultrafiltration membrane piece 54 is blocked by impurities, and the cleaning effect of the forward washing operation on the ultrafiltration membrane piece 54 is poor, the worker stops the water inlet at the water inlet pipe 41, and then starts the second electric push rod 9, and the telescopic end of the second electric push rod 9 starts to move to the right, and the telescopic end of the second electric push rod 9 drives the moving pipe 82 and the parts thereon to move to the right, and when the moving pipe 82 moves to the position that the water inlet hole thereon is communicated with the water suction pipe 83, the worker stops the second electric push rod 9, at this time the second water outlet shell 85 is located in the inner shell 53, and the worker starts the water pump 81 to start pumping the clean water in the water storage tank 3 upwards, and the clean water enters the cavity between the moving pipe 82, the first water outlet shell 84 and the second water outlet shell 85 after passing through the water suction pipe 83 and the water inlet hole, and then enters the sliding shell 51 and the inner shell 53 through the water holes of the first water outlet shell 84 and the second water outlet shell 85, and the clean water passes through the through holes of the outer shell 52 and the inner shell 53 in the opposite direction to perform backwashing on the impurities accumulated in the ultrafiltration membrane piece 54, improve the cleaning effect of the ultrafiltration membrane piece 54, and the water flowing out of the ultrafiltration membrane piece 54 is discharged through the sewage pipe 44 and the drain pipe 10, reducing the discharge resistance, so as to improve the effect of the backwashing water flow on the impurities, and further improve the cleaning effect and efficiency.

[0040] When the moving pipe 82 moves to the position that the water inlet hole thereon is communicated with the water suction pipe 83, the worker starts the driving motor 86, the output shaft of the driving motor 86 drives the second water outlet shell 85 and the parts thereon to rotate, and then the backwashing water flow flowing out of the water hole of the second water outlet shell 85 forms a vortex, and the backwashing water flow is further strengthened under the action of the centrifugal force, and the cleaning effect on the ultrafiltration membrane piece 54 is improved, and at the same time the rotating first flow disturbing piece 87 further enhances the strength of the vortex of the backwashing water flow, and the cleaning effect on the ultrafiltration membrane piece 54 is further improved.

[0041] The technical principles of the embodiments of the application are described above in combination with specific embodiments. These descriptions are only for explaining the principles of the embodiments of the application, and cannot be explained as limitations on the protection scope of the embodiments of the application in any way. Based on the explanations here, other specific embodiments of the embodiments of the application can be thought of by those skilled in the art without creative labor, and these embodiments will fall within the protection scope of the embodiments of the application.

Claims

1. An ultrafiltration membrane module with a self-cleaning function for industrial wastewater, characterized by: The utility model provides a sewage treatment device, including symmetrically distributed support (1), be provided with sewage tank (2) and water storage tank (3) between symmetric support (1), the support (1) fixedly connected with water inlet pipe (41) on sewage tank (2) side, symmetric support (1) between fixedly connected with treatment pipeline (42), treatment pipeline (42) with water inlet pipe (41) intercommunication, water storage tank (3) with treatment pipeline (42) intercommunication has the water pipe (43), sewage tank (2) with treatment pipeline (42) intercommunication has sewage pipe (44), treatment pipeline (42) is provided with filter assembly (5) for filtering water, filter assembly (5) includes sliding shell (51), sliding shell (51) is connected in the inner wall of treatment pipeline (42) with sliding, sliding shell (51) fixedly connected with shell (52), shell (52) fixedly connected with inner shell (53), shell (52) and inner shell (53) between fixedly connected with ultrafiltration membrane piece (54), shell (52) with inner shell (53) all are provided with the through -hole for the water, sliding shell (51) and shell (52) between fixedly connected with intermediate connecting pipe (55), treatment pipeline (42) is provided with the positive washing mechanism (6) for cleaning ultrafiltration membrane piece (54), treatment pipeline (42) is provided with the limiting assembly (7) for the limiting sliding shell (51). The positive washing mechanism (6) includes a housing (61) fixedly connected to the outer wall of the treatment pipeline (42), a first electric push rod (62) installed in the housing (61), a support frame (63) fixedly connected to the extension end of the first electric push rod (62), a sealing plate (64) fixedly connected to the support frame (63), a fixed ring (65) fixedly connected to the sealing plate (64), and the sealing plate (64) and the fixed ring (65) are both in sliding connection with the treatment pipeline (42), and the first elastic element (66) is fixedly connected between the fixed ring (65) and the sliding shell (51). The limiting assembly (7) includes a first limiting block (71) in sliding connection with the treatment pipeline (42), a second elastic element (72) fixedly connected between the first limiting block (71) and the housing (61), a first guide rod (73) fixedly connected to the first limiting block (71), the first guide rod (73) in sliding connection with the housing (61), a second limiting block (74) in sliding connection with the treatment pipeline (42), the first limiting block (71) is provided with a first inner hole, the second limiting block (74) is provided with a second inner hole, the first limiting block (71) and the second limiting block (74) are both in cooperation with the sliding shell (51), a third elastic element (75) fixedly connected between the second limiting block (74) and the housing (61), a second guide rod (76) fixedly connected to the second limiting block (74), the second guide rod (76) in sliding connection with the housing (61).

2. The ultrafiltration membrane module with self-cleaning function for industrial wastewater according to claim 1, characterized in that: The length of the ultrafiltration membrane piece (54) is less than the length of the shell (52), and the intermediate connecting pipe (55) is located between the inner shell (53) and the ultrafiltration membrane piece (54).

3. The ultrafiltration membrane module with self-cleaning function for industrial wastewater according to claim 1, characterized in that: The support frame (63) is fixedly connected with a limiting block at one end close to the first limiting block (71), and the first limiting block (71) and the second limiting block (74) are matched with the limiting block of the support frame (63).

4. The ultrafiltration membrane module with self-cleaning function for industrial wastewater according to claim 3, characterized in that: The first limiting block (71) and the second limiting block (74) are provided with inclined surfaces at one side close to the first electric push rod (62) and are matched with the limiting block of the support frame (63).

5. The ultrafiltration membrane module with self-cleaning function for industrial wastewater according to claim 1, characterized in that: The reverse washing mechanism (8) is arranged on the water storage tank (3), and the reverse washing mechanism (8) comprises a water pump (81), the water pump (81) is installed on one side of the water storage tank (3) close to the treatment pipeline (42), the inside of the treatment pipeline (42) is slidably connected with a moving pipe (82), the moving pipe (82) is matched with the end face of the water passing pipe (43) close to the treatment pipeline (42), the moving pipe (82) is provided with a water inlet hole, the water pump (81) and the treatment pipeline (42) are communicated with a water pumping pipe (83), the inside of the moving pipe (82) is fixedly connected with a first water outlet shell (84), the first water outlet shell (84) is provided with a second water outlet shell (85), the first water outlet shell (84) and the second water outlet shell (85) are provided with water holes arranged along the respective axes in a circular and uniform array, a cavity is formed between the moving pipe (82), the first water outlet shell (84) and the second water outlet shell (85), the cavity is communicated with the inside of the treatment pipeline (42) through the water holes, and the treatment pipeline (42) is provided with a second electric push rod (9), and the telescopic end of the second electric push rod (9) is fixedly connected with the moving pipe (82).

6. The ultrafiltration membrane module with self-cleaning function for industrial wastewater according to claim 5, characterized in that: The first water outlet shell (84) is a circular shell with an inner wall diameter greater than an outer wall diameter of the outer shell (52).

7. The ultrafiltration membrane module with self-cleaning function for industrial wastewater according to claim 5, characterized in that: One side of the moving pipe (82) is provided with a driving motor (86), an output shaft of the driving motor (86) is fixedly connected with the second water outlet shell (85), the second water outlet shell (85) is fixedly connected with first turbulence pieces (87) at equal intervals along the axial direction, one end of the inner shell (53) close to the first elastic element (66) is fixedly connected with a second turbulence piece (88), one end of the second water outlet shell (85) is fixedly connected with circumferentially distributed third limiting blocks (89), the third limiting blocks (89) are matched with the second turbulence piece (88), and the treatment pipeline (42) is communicated with a drain pipe (10) between the sewage tank (2).

8. The ultrafiltration membrane module with self-cleaning function for industrial wastewater according to claim 7, characterized in that: The second water outlet shell (85) is a circular shell with an outer wall diameter smaller than an inner wall diameter of the inner shell (53).

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