A column-type ultrafiltration membrane device

Abstract

This invention relates to a column-type ultrafiltration membrane device, belonging to the field of solid-liquid separation technology. It includes a membrane housing, with an inlet pipe extending through one end and an outlet pipe extending through the other end. A wastewater pipe is connected to the membrane housing, and a wastewater valve is installed on the wastewater pipe. An end plate is slidably disposed within the membrane housing. A telescopic assembly is provided between the end plate and the inlet pipe, driving the end plate to move. A plurality of flexible diaphragms are fixedly disposed on the end plate, with a common annular plate at the ends of the flexible diaphragms away from the end plate. The inner wall of the membrane housing and the side wall of the outlet pipe are both in contact with the annular plate. A swing seat is disposed between adjacent flexible diaphragms, and a driving assembly is provided between the swing seat and the end plate, driving the swing seat to move. A plurality of ultrafiltration membrane fiber clusters are disposed on the swing seat, with the ends of the ultrafiltration membrane fiber clusters away from the swing seat fixedly connected to the annular plate. This application facilitates the cleaning of the ultrafiltration membrane fibers.

Description

Technical Field

[0001] This invention relates to the field of solid-liquid separation technology, and in particular to a column-type ultrafiltration membrane device. Background Technology

[0002] Ultrafiltration membrane is a semi-permeable polymer membrane that can separate polymer colloids or suspended particles of a certain size from a solution. Therefore, in the process of water pollution control, the liquid after coagulation, flocculation and sedimentation treatment is passed into the ultrafiltration membrane equipment for filtration, thereby achieving the effect of solid-liquid separation.

[0003] Existing ultrafiltration membrane equipment mainly consists of hundreds or thousands of ultrafiltration membrane fibers and a membrane housing. The ends of the ultrafiltration membrane fibers are cast with epoxy resin or polyurethane and fixed inside the membrane housing. During operation, raw water enters from the outside of the membrane fibers. Water molecules and small molecules pass through the membrane wall under pressure and enter the inside of the membrane fibers to form product water, while colloids, suspended particles, bacteria, etc. are trapped on the outer surface of the membrane fibers, thereby achieving the effect of separation and purification.

[0004] During the continuous filtration of water by ultrafiltration membrane fibers, contaminants can easily accumulate between the ultrafiltration membrane fibers. Workers need to first remove the membrane housing and then clean the ultrafiltration membrane fibers inside the housing, resulting in a labor-intensive cleaning process for the ultrafiltration membrane fibers. Summary of the Invention

[0005] To facilitate the cleaning of ultrafiltration membrane fibers, this application provides a column-type ultrafiltration membrane device.

[0006] The column-type ultrafiltration membrane device provided in this application adopts the following technical solution: A column-type ultrafiltration membrane device includes a membrane housing, with an inlet pipe extending through one end and an outlet pipe extending through the other end. A wastewater pipe is connected to the membrane housing, and a wastewater valve is installed on the wastewater pipe. An end plate is slidably disposed inside the membrane housing. A telescopic component is disposed between the end plate and the inlet pipe, and the telescopic component is used to drive the end plate to move. A plurality of flexible diaphragms are fixedly disposed on the end plate. The ends of the flexible diaphragms away from the end plate are all provided with an annular plate. The inner wall of the membrane housing and the side wall of the outlet pipe are both in contact with the annular plate. A swing seat is disposed between adjacent flexible diaphragms. A driving component is disposed between the swing seat and the end plate, and the driving component is used to drive the swing seat to move. A plurality of ultrafiltration membrane fiber bundles are disposed on the swing seat, and the ends of the ultrafiltration membrane fiber bundles away from the swing seat are fixedly connected to the annular plate.

[0007] By adopting the above technical solution, when filtering water, the telescopic component is in a shortened state, the end plate is away from the ring plate, the swing seat remains stationary, the drive component does not work, and the raw water enters the membrane housing through the inlet pipe. The ultrafiltration membrane fiber cluster filters the raw water, allowing water molecules and small molecules to pass through the ultrafiltration membrane fiber cluster under pressure and be discharged from the outlet pipe, while colloids, suspended particles, bacteria, etc. are intercepted by the ultrafiltration membrane fiber cluster, thereby achieving the effect of water separation and purification. When cleaning the ultrafiltration membrane fiber cluster, the telescopic component is in an extended state, the end plate is close to the ring plate, and the drive component works to drive the swing seat to shake, thereby causing the swing seat to shake the ultrafiltration membrane fiber cluster. At the same time, the cleaning liquid is injected into the membrane housing from the outlet pipe, and the cleaning liquid cleans the shaking ultrafiltration membrane fiber cluster, achieving the effect of backwashing the ultrafiltration membrane fiber cluster. The wastewater generated after cleaning is discharged through the wastewater pipe, reducing the need for workers to disassemble the membrane housing to clean the ultrafiltration membrane fiber, making it easier to clean the ultrafiltration membrane fiber and reducing the labor intensity of the ultrafiltration membrane fiber cleaning process.

[0008] Preferably, the telescopic assembly includes a telescopic seat, a telescopic piston cylinder, and a telescopic tube. The telescopic seat is fixedly connected to one end of the inlet pipe inside the membrane housing. Several supports are fixedly arranged between the side wall of the telescopic seat and the inner wall of the membrane housing. The telescopic piston cylinder is fixedly connected to the telescopic seat. The output shaft of the telescopic piston cylinder is fixedly connected to the end plate. The telescopic tube is sleeved on the telescopic piston cylinder. One end of the telescopic tube is fixedly connected to the end plate, and the other end of the telescopic tube is fixedly connected to the telescopic seat. There is a gap between the side wall of the end plate and the inner wall of the membrane housing. Several inlet holes are opened through the side wall of the inlet pipe.

[0009] By adopting the above technical solution, the telescopic seat seals one end of the inlet pipe inside the membrane housing, allowing the raw water in the inlet pipe to enter the membrane housing through the inlet hole. The telescopic pipe seals the telescopic piston cylinder between the end plate and the telescopic seat, reducing the possibility of corrosion of the telescopic cylinder by the raw water. The output shaft of the telescopic piston cylinder extends and retracts, causing the end plate to move inside the membrane housing. When cleaning the ultrafiltration membrane fiber bundle, the output shaft of the telescopic piston cylinder extends, causing the end plate to move closer to the ring plate, shortening the distance between the two ends of the ultrafiltration membrane fiber bundle, which facilitates the shaking of the ultrafiltration membrane fiber bundle. When filtering water, the output shaft of the telescopic piston cylinder shortens, causing the end plate to drive the ultrafiltration membrane fiber bundle to return to its original position.

[0010] Preferably, the end plate has several dovetail grooves on the side facing the ring plate, and a dovetail block is slidably arranged in the dovetail groove. The dovetail block is fixedly connected to the swing seat on the side facing the ring plate. A first spring is fixedly arranged at one end of the dovetail block, and a second spring is fixedly arranged at the other end of the dovetail block. The ends of the first spring and the second spring away from the dovetail block are both fixedly connected to the inner wall of the dovetail groove. The driving assembly is used to drive the dovetail block to move.

[0011] By adopting the above technical solution, when cleaning the ultrafiltration membrane fiber bundle, the dovetail block moves under the action of the drive component. At this time, the dovetail block squeezes and stretches the first spring and the second spring, causing the elastic force of the first spring and the second spring on the dovetail block to change, thereby causing the dovetail block to vibrate in the dovetail groove. Then, the dovetail block drives the swing seat to move synchronously, causing the ultrafiltration membrane fiber bundle to shake.

[0012] Preferably, the swing seat covers a dovetail groove, the opposite surface of the flexible diaphragm is in contact with the side wall of the swing seat, the flexible diaphragm seals the gap between adjacent swing seats, an inner sealing sleeve and an outer sealing sleeve are fixedly provided on the end plate, the inner ring wall of the swing seat and the inner ring wall of the flexible diaphragm are both in contact with the inner sealing sleeve, the outer ring wall of the swing seat and the outer ring wall of the flexible diaphragm are both in contact with the outer sealing sleeve, and both the inner sealing sleeve and the outer sealing sleeve seal the gap between the swing seat and the end plate.

[0013] By adopting the above technical solution, when the swing seat moves, the flexible diaphragm deforms to compensate for the gap between adjacent swing seats, thereby achieving the effect of sealing the gap between adjacent swing seats. The inner sealing sleeve and the outer sealing sleeve are attached to the swing seat and the flexible diaphragm deform, thereby achieving the effect of sealing the gap between the swing seat and the end plate.

[0014] Preferably, a driving cavity is formed in the end plate, the driving assembly is located in the driving cavity, a connecting hole is formed in the inner wall of the dovetail groove, the connecting hole communicates with the driving cavity, a connecting rod is inserted through the connecting hole, the connecting rod is slidably connected to the connecting hole, one end of the connecting rod is fixedly connected to the dovetail block, and the other end of the connecting rod abuts against the driving assembly, the driving assembly is used to drive the connecting rod to move.

[0015] By adopting the above technical solution, when cleaning the ultrafiltration membrane fiber bundle, the drive component drives the connecting rod to move, and the connecting rod slides along the connecting hole, so that the connecting rod drives the dovetail block to move in the dovetail groove.

[0016] Preferably, the drive assembly includes a drive motor and a drive wheel. The drive motor is fixedly mounted in the drive cavity, and the output shaft of the drive motor is fixedly connected to the drive wheel. The drive wheel is rotatably mounted in the drive cavity. A drive ring groove is formed on the side wall of the drive wheel. Several arc-shaped concave surfaces are provided on the inner wall of the drive ring groove. An arc-shaped convex surface is provided between adjacent arc-shaped concave surfaces. The arc-shaped concave surfaces and arc-shaped convex surfaces together form a corrugated surface. A spherical surface is provided at the end of the connecting rod away from the dovetail block. Several spheres are rotatably mounted on the spherical surface, and the spheres abut against the corrugated surface.

[0017] By adopting the above technical solution, the drive motor starts and drives the drive wheel to rotate. When the drive wheel rotates, the wave surface and the spherical surface move relative to each other, so that the connecting rod moves with the wave surface.

[0018] Preferably, a first through hole is formed through the swing seat, a second through hole is formed through the dovetail block, and a third through hole is formed through the inner wall of the dovetail groove. An auxiliary tube is inserted into the first, second, and third through holes. The auxiliary tube is movably disposed in the first, second, and third through holes and is inserted between the ultrafiltration membrane fiber bundles. Several auxiliary holes are formed through the side wall of the auxiliary tube. One end of the auxiliary tube is fixedly connected to the ring plate, and the other end of the auxiliary tube is connected to an auxiliary main tube, which penetrates the membrane shell.

[0019] By adopting the above technical solution, the first through hole, the second through hole and the third through hole provide clearance space for the auxiliary tube, which facilitates the movement of the end plate, the dovetail block and the swing seat. When gas is introduced into the auxiliary main tube, the gas sprayed out of the auxiliary hole performs gas washing on the ultrafiltration membrane fiber bundle. When liquid is introduced into the auxiliary main tube, the liquid sprayed out of the auxiliary hole performs liquid washing on the ultrafiltration membrane fiber bundle.

[0020] Preferably, a conical inner sleeve is fitted onto the auxiliary tube, and the conical inner sleeve is fixedly connected to the auxiliary tube. A conical outer sleeve is fitted onto the conical inner sleeve, and the outer wall of the conical inner sleeve is used to abut against the inner wall of the conical outer sleeve. The conical outer sleeve is fixedly connected to the dovetail block, and the conical outer sleeve is slidably disposed in the third through hole. The outer diameter of the conical inner sleeve near the ring plate is smaller than the outer diameter of the conical inner sleeve away from the ring plate. The inner diameter of the conical outer sleeve near the ring plate is smaller than the inner diameter of the conical outer sleeve away from the ring plate. The outer diameter of the conical inner sleeve near the ring plate, the inner diameter of the conical outer sleeve near the ring plate, and the inner diameter of the second through hole are all equal. The outer diameter of the conical inner sleeve away from the ring plate is smaller than the inner diameter of the conical outer sleeve away from the ring plate.

[0021] By adopting the above technical solution, when filtering water, the telescopic component is in a shortened state. At this time, the conical inner sleeve abuts against the conical outer sleeve, and the outer wall of the conical inner sleeve is tightly fitted with the inner wall of the conical outer sleeve. This makes it difficult for the conical outer sleeve to move within the third through hole under the action of the conical inner sleeve, thus achieving the effect of restricting the movement of the swing seat. When filtering ultrafiltration membrane fibers, the telescopic component is in an extended state. At this time, there is a gap between the outer wall of the conical inner sleeve and the inner wall of the conical outer sleeve, which facilitates the movement of the conical outer sleeve between the conical inner sleeve and the third through hole.

[0022] Preferably, a first sealing sleeve is fitted onto the auxiliary tube, one end of which is fixedly connected to the auxiliary tube and the other end of which is fixedly connected to the swing seat. The first sealing sleeve is used to seal the gap between the first through hole and the auxiliary tube.

[0023] By adopting the above technical solution, the first sealing sleeve seals the gap between the first through hole and the auxiliary tube.

[0024] Preferably, a third sealing sleeve is fitted onto the auxiliary tube. One end of the third sealing sleeve is fixedly connected to the auxiliary tube, and the other end of the third sealing sleeve is fixedly connected to the end plate. The third sealing sleeve is used to seal the gap between the third through hole and the auxiliary tube.

[0025] By adopting the above technical solution, the third sealing sleeve seals the gap between the third through hole and the auxiliary pipe.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a membrane housing, inlet pipe, outlet pipe, sewage pipe, sewage valve, end plate, telescopic assembly, flexible diaphragm, ring plate, swing seat, drive assembly and ultrafiltration membrane fiber cluster, the need for workers to disassemble the membrane housing to clean the ultrafiltration membrane fibers is reduced, thus facilitating the cleaning of the ultrafiltration membrane fibers and reducing the labor intensity of the ultrafiltration membrane fiber cleaning process; 2. By setting up a telescopic seat, telescopic piston cylinder, telescopic tube, bracket and water inlet, it is easy for the ultrafiltration membrane fiber bundle to shake; 3. By setting up a drive motor, drive wheel, drive ring groove, arc-shaped convex surface, arc-shaped concave surface, corrugated surface, spherical surface and sphere, the effect of driving the swing seat to move can be achieved. Attached Figure Description

[0027] Figure 1 This is a cross-sectional view of a column-type ultrafiltration membrane device according to an embodiment of this application.

[0028] Figure 2 This is a cross-sectional view illustrating the connection between the ring plate and the membrane shell in an embodiment of this application.

[0029] Figure 3 This is a cross-sectional view illustrating the positional relationship between the auxiliary tube and the flexible diaphragm in an embodiment of this application.

[0030] Figure 4 This is a cross-sectional view illustrating the connection between the water inlet pipe and the end plate in the embodiments of this application.

[0031] Figure 5 This is a cross-sectional view illustrating the connection between the swing seat and the end plate in the embodiments of this application.

[0032] Figure 6 This is a cross-sectional view illustrating the positional relationship between the arc-shaped convex surface and the arc-shaped concave surface in the embodiments of this application.

[0033] Figure 7 This is a cross-sectional view illustrating the connection between the spherical surface and the sphere in the embodiments of this application.

[0034] Figure 8 This is a cross-sectional view illustrating the connection relationship between the auxiliary pipe and the end plate in the embodiments of this application.

[0035] Figure 9This is a cross-sectional view illustrating the positional relationship between the conical outer sleeve and the conical inner sleeve in the embodiments of this application.

[0036] Explanation of reference numerals in the attached drawings: 1. Membrane housing; 11. Inlet pipe; 111. Inlet hole; 12. Outlet pipe; 13. Wastewater pipe; 131. Wastewater valve; 2. Ultrafiltration membrane fiber bundle; 21. End plate; 22. Ring plate; 3. Flexible diaphragm; 31. Inner sealing sleeve; 32. Outer sealing sleeve; 4. Telescopic assembly; 41. Telescopic seat; 42. Telescopic piston cylinder; 43. Telescopic tube; 44. Support; 5. Swing seat; 51. Dovetail block; 511. First spring; 512. Second spring; 52. Dovetail groove; 6. Drive assembly; 61. Drive motor; 62. Drive wheel; 621. Drive ring groove; 63. Corrugated surface; 631. Arc-shaped convex surface; 632. Arc-shaped concave surface; 64. Drive cavity; 7. Connecting rod; 71. Connecting hole; 72. Spherical surface; 73. Sphere; 8. Auxiliary pipe; 81. Auxiliary hole; 82. Auxiliary main pipe; 83. First through hole; 831. First sealing sleeve; 84. Second through hole; 85. Third through hole; 851. Third sealing sleeve; 86. Conical outer sleeve; 87. Conical inner sleeve. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0038] This application discloses a column-type ultrafiltration membrane device. (Refer to...) Figures 1 to 5The system includes a membrane housing 1, with an inlet pipe 11 extending through one end and an outlet pipe 12 extending through the other end. The membrane housing 1, inlet pipe 11, and outlet pipe 12 are coaxially aligned. An end plate 21 is slidably installed inside the membrane housing 1 along its axis, with a gap between the side wall of the end plate 21 and the inner wall of the membrane housing 1 for water flow. A telescopic assembly 4 is installed between the end plate 21 and the inlet pipe 11, driving the end plate 21 to move along the axis of the membrane housing 1. Several flexible diaphragms 3 made of perfluoroether rubber are installed on the end of the end plate 21 away from the inlet pipe 11, arranged in a circular array around the axis of the end plate 21. A ring plate 22 is installed on the end of the flexible diaphragms 3 away from the end plate 21, fixedly installed between the inner wall of the membrane housing 1 and the side wall of the outlet pipe 12, sealing the gap between them. A swing seat 5 is installed between adjacent flexible diaphragms 3, and the swing seats 5 are arranged in a circular array with the axis of end plate 21 as the center. Several ultrafiltration membrane fiber bundles 2 are installed between the swing seats 5 and the ring plate 22. One end of the ultrafiltration membrane fiber bundle 2 is fixedly connected to the swing seat 5 by casting epoxy resin or polyurethane, and the other end of the ultrafiltration membrane fiber bundle 2 is fixedly connected to the ring plate 22 by casting epoxy resin or polyurethane. A sewage pipe 13 is connected to the membrane shell 1. The sewage pipe 13 is located inside the membrane shell 1, with one end located between end plate 21 and ring plate 22. A sewage valve 131 is installed on the sewage pipe 13. Several dovetail grooves 52 are opened along the diameter direction of end plate 21 on the side of end plate 21 facing ring plate 22, and the dovetail grooves 52 are arranged in a circular array with the axis of end plate 21 as the center. Dovetail blocks 51 are slidably arranged in the dovetail grooves 52. Each dovetail block 51 corresponds to one of the swing seats 5, and the oppositely arranged dovetail blocks 51 are fixedly connected to the swing seats 5. A first spring 511 is installed at one end of the dovetail block 51, and a second spring 512 is installed at the other end. The ends of the first spring 511 and the second spring 512, which are away from the dovetail block 51, are both welded to the inner wall of the dovetail groove 52. A drive assembly 6 is installed between the dovetail block 51 and the end plate 21. The drive assembly 6 is used to drive the dovetail block 51 to move. When filtering water, the telescopic assembly 4 is in a shortened state. At this time, the end plate 21 is away from the ring plate 22, the drive assembly 6 does not work, and the swing seat 5 remains stationary. Raw water enters the membrane housing 1 through the inlet pipe 11. The ultrafiltration membrane fiber cluster 2 filters the raw water, causing water molecules and small molecules to pass through the ultrafiltration membrane fiber cluster 2 under pressure and be discharged from the outlet pipe 12. Colloids, suspended particles, bacteria, etc., are intercepted by the ultrafiltration membrane fiber cluster 2, thereby achieving the effect of water separation and purification. When cleaning the ultrafiltration membrane fiber bundle 2, the telescopic component 4 is in an extended state. At this time, the end plate 21 is close to the ring plate 22, and the dovetail block 51 moves under the action of the drive component 6. At this time, the dovetail block 51 squeezes and stretches the first spring 511 and the second spring 512, causing the elastic force of the first spring 511 and the second spring 512 on the dovetail block 51 to change, thereby causing the dovetail block 51 to vibrate in the dovetail groove 52. Then, the dovetail block 51 drives the swing seat 5 to move synchronously, causing the ultrafiltration membrane fiber bundle 2 to shake.Simultaneously, cleaning liquid is injected into the membrane housing 1 from the outlet pipe 12. The cleaning liquid cleans the vibrating ultrafiltration membrane fiber cluster 2, achieving the effect of backwashing the ultrafiltration membrane fiber cluster 2. The wastewater generated after cleaning is discharged through the wastewater pipe 13. This reduces the need for staff to disassemble the membrane housing 1 to clean the ultrafiltration membrane fibers, making it easier to clean the ultrafiltration membrane fibers and reducing the labor intensity of the ultrafiltration membrane fiber cleaning process.

[0039] Reference Figures 1 to 5 The swing seat 5 covers the dovetail groove 52, and the opposite surface of the flexible diaphragm 3 is in contact with the side wall of the swing seat 5, sealing the gap between adjacent swing seats 5. When the swing seat 5 moves, the flexible diaphragm 3 deforms to compensate for the gap between adjacent swing seats 5, thus achieving the effect of sealing the gap between adjacent swing seats 5. An inner sealing sleeve 31 and an outer sealing sleeve 32 made of perfluoroether rubber are installed on the end plate 21. The inner ring wall of the swing seat 5 and the inner ring wall of the flexible diaphragm 3 are both in contact with and sealed to the inner sealing sleeve 31, and the outer ring wall of the swing seat 5 and the outer ring wall of the flexible diaphragm 3 are both in contact with and sealed to the outer sealing sleeve 32. The inner sealing sleeve 31 and the outer sealing sleeve 32 deform in contact with the swing seat 5 and the flexible diaphragm 3, thereby achieving the effect of sealing the gap between the swing seat 5 and the end plate 21.

[0040] Reference Figures 1 to 8 A first through hole 83 is formed in the swing seat 5, a second through hole 84 is formed in the dovetail block 51, and a third through hole 85 is formed in the inner wall of the dovetail groove 52. An auxiliary tube 8 is inserted into the first through hole 83, the second through hole 84, and the third through hole 85, which are arranged opposite to each other. The auxiliary tube 8 is movably disposed in the first through hole 83, the second through hole 84, and the third through hole 85, which provide space for the auxiliary tube 8 to facilitate the movement of the end plate 21, the dovetail block 51, and the swing seat 5. One end of the auxiliary tube 8 is fixedly connected to the ring plate 22, and the other end of the auxiliary tube 8 is connected to an auxiliary main pipe 82, which penetrates the membrane shell 1. The auxiliary tube 8 is inserted between the ultrafiltration membrane fiber bundles 2, and several auxiliary holes 81 are formed through the side wall of the auxiliary tube 8. When the ultrafiltration membrane fiber cluster 2 is gas washed, gas is ejected from the auxiliary hole 81; when the ultrafiltration membrane fiber cluster 2 is liquid washed, liquid is ejected from the auxiliary hole 81.

[0041] Reference Figures 1 to 8A first sealing sleeve 831 and a third sealing sleeve 851 made of perfluoroether rubber are fitted onto the auxiliary pipe 8. The first sealing sleeve 831 is located on the side of the end plate 21 facing the ring plate 22, and the second sealing sleeve is located on the side of the end plate 21 away from the ring plate 22. One end of the first sealing sleeve 831 is sealed to the side wall of the auxiliary pipe 8, and the other end of the first sealing sleeve 831 is sealed to the swing seat 5. The first sealing sleeve 831 covers the first through hole 83, thereby sealing the gap between the first through hole 83 and the auxiliary pipe 8. One end of the third sealing sleeve 851 is sealed to the auxiliary pipe 8, and the other end of the third sealing sleeve 851 is sealed to the end plate 21. The third sealing sleeve 851 covers the third through hole 85, thereby sealing the gap between the third through hole 85 and the auxiliary pipe 8.

[0042] Reference Figures 1 to 9 A tapered inner sleeve 87 is fitted onto the auxiliary tube 8, and the tapered inner sleeve 87 is integrally formed with the auxiliary tube 8. A tapered outer sleeve 86 is fitted onto the tapered inner sleeve 87, and the outer wall of the tapered inner sleeve 87 abuts against the inner wall of the tapered outer sleeve 86. The tapered outer sleeve 86 is fixedly installed with the dovetail block 51, and the tapered outer sleeve 86 is slidably disposed within the third through hole 85. The outer diameter of the tapered inner sleeve 87 near the ring plate 22 is smaller than the outer diameter of the tapered inner sleeve 87 away from the ring plate 22, and the inner diameter of the tapered outer sleeve 86 near the ring plate 22 is smaller than the inner diameter of the tapered outer sleeve 86 away from the ring plate 22. The outer diameter of the tapered inner sleeve 87 near the ring plate 22, the inner diameter of the tapered outer sleeve 86 near the ring plate 22, and the inner diameter of the second through hole 84 are all equal, and the outer diameter of the tapered inner sleeve 87 away from the ring plate 22 is smaller than the inner diameter of the tapered outer sleeve 86 away from the ring plate 22. When filtering water, the telescopic component 4 is in a shortened state. At this time, the conical inner sleeve 87 abuts against the conical outer sleeve 86, and the outer wall of the conical inner sleeve 87 is tightly fitted with the inner wall of the conical outer sleeve 86. This prevents the conical outer sleeve 86 from moving within the third through hole 85 under the action of the conical inner sleeve 87, thus limiting the movement of the swing seat 5. When filtering the ultrafiltration membrane fiber bundle 2, the telescopic component 4 is in an extended state. At this time, there is a gap between the outer wall of the conical inner sleeve 87 and the inner wall of the conical outer sleeve 86, facilitating the movement of the conical outer sleeve 86 between the conical inner sleeve 87 and the third through hole 85.

[0043] Reference Figures 1 to 9The telescopic assembly 4 includes a telescopic seat 41, a telescopic piston cylinder 42, and a telescopic tube 43. The telescopic seat 41 is installed on the end of the inlet pipe 11 located inside the membrane housing 1, and the telescopic seat 41 seals this end. Several inlet holes 111 are formed through the side wall of the inlet pipe 11, through which raw water enters the membrane housing 1. Several supports 44 are installed between the side wall of the telescopic seat 41 and the inner wall of the membrane housing 1, providing support for the telescopic seat 41. The telescopic piston cylinder 42 is installed on the side of the telescopic seat 41 away from the inlet pipe 11, and its output shaft is welded to the end plate 21. The telescopic tube 43 is sleeved on the telescopic piston cylinder 42, with one end of the tube sealed to the end plate 21 and the other end sealed to the telescopic seat 41. The telescopic tube 43 encloses the telescopic piston cylinder 42 between the end plate 21 and the telescopic seat 41, reducing the risk of corrosion of the telescopic cylinder by raw water. When cleaning the ultrafiltration membrane fiber cluster 2, the output shaft of the telescopic piston cylinder 42 extends, causing the end plate 21 to move closer to the annular plate 22, shortening the distance between the two ends of the ultrafiltration membrane fiber cluster 2, and creating a gap between the outer wall of the conical inner sleeve 87 and the inner wall of the conical outer sleeve 86, facilitating the shaking of the ultrafiltration membrane fiber cluster 2. When filtering water, the output shaft of the telescopic piston cylinder 42 shortens, causing the outer wall of the conical inner sleeve 87 to fit tightly against the inner wall of the conical outer sleeve 86, keeping the ultrafiltration membrane fiber cluster 2 stable.

[0044] Reference Figures 1 to 7 A drive cavity 64 is formed within the end plate 21, and a drive assembly 6 is installed within the drive groove. The drive assembly 6 includes a drive motor 61 and a drive wheel 62. The drive motor 61 is fixedly installed within the drive cavity 64, and its output shaft is welded to the drive wheel 62. The drive wheel 62 is rotatably positioned within the drive cavity 64. A drive ring groove 621 is formed on the side wall of the drive wheel 62. Several arc-shaped concave surfaces 632 are provided on the inner wall of the drive ring groove 621, and arc-shaped convex surfaces 631 are provided between adjacent arc-shaped concave surfaces 632. The arc-shaped concave surfaces 632 and the arc-shaped convex surfaces 631 together form a corrugated surface 63. A connecting hole 71 is formed on the inner wall of the dovetail groove 52, and the connecting hole 71 communicates with the drive cavity 64. A connecting rod 7 is inserted through the connecting hole 71 and is slidably connected to the connecting hole 71. One end of the connecting rod 7 located within the dovetail groove 52 is welded to the dovetail block 51, and the other end of the connecting rod 7 located within the drive cavity 64 is inserted into the drive ring groove 621. A spherical surface 72 is provided at the end of the connecting rod 7 away from the dovetail block 51. Several spheres 73 are rotatably mounted on the spherical surface 72, and the spheres 73 abut against the corrugated surface 63. When the drive motor 61 starts, it drives the drive wheel 62 to rotate. When the drive wheel 62 rotates, the corrugated surface and the spherical surface 72 move relative to each other, thereby causing the connecting rod 7 to move along the corrugated surface. When the connecting rod 7 slides along the connecting hole 71 following the corrugated surface, the connecting rod 7 drives the dovetail block 51 to move within the dovetail groove 52.

[0045] The implementation principle of a column-type ultrafiltration membrane device in this application embodiment is as follows: When filtering water, the output shaft of the telescopic piston cylinder 42 shortens, at which time the outer wall of the conical inner sleeve 87 and the inner wall of the conical outer sleeve 86 are tightly fitted, keeping the ultrafiltration membrane fiber cluster 2 stable. Raw water enters the membrane shell 1 through the inlet pipe 11, and the ultrafiltration membrane fiber cluster 2 filters the raw water, causing water molecules and small molecules to pass through the ultrafiltration membrane fiber cluster 2 under pressure and be discharged from the outlet pipe 12, while colloids, suspended particles, bacteria, etc. are intercepted by the ultrafiltration membrane fiber cluster 2, thereby achieving the effect of water separation and purification. When cleaning the ultrafiltration membrane fiber cluster 2, the output shaft of the telescopic piston cylinder 42 extends, causing the end plate 21 to move closer to the ring plate 22, shortening the distance between the two ends of the ultrafiltration membrane fiber cluster 2, and creating a gap between the outer wall of the conical inner sleeve 87 and the inner wall of the conical outer sleeve 86. Then, the drive motor 61 starts, and the dovetail block 51 moves under the action of the drive motor 61. At this time, the dovetail block 51 squeezes and stretches the first spring 511 and the second spring 512, causing the elastic force of the first spring 511 and the second spring 512 on the dovetail block 51 to change, thereby causing the dovetail block 51 to vibrate in the dovetail groove 52. In turn, the dovetail block 51 drives the swing seat 5 to move synchronously, causing the ultrafiltration membrane fiber cluster 2 to shake. When backwashing the ultrafiltration membrane fiber, the cleaning liquid is injected into the membrane housing 1 from the outlet pipe 12, and the cleaning liquid cleans the shaking ultrafiltration membrane fiber cluster 2. When air washing the ultrafiltration membrane fiber cluster 2, the gas is sprayed out from the auxiliary hole 81. When liquid washing the ultrafiltration membrane fiber cluster 2, the liquid is sprayed out from the auxiliary hole 81. After the ultrafiltration membrane fiber cluster 2 is cleaned, the generated wastewater is discharged through the wastewater pipe 13. This reduces the need for workers to disassemble the membrane housing 1 to clean the ultrafiltration membrane fiber, making it easier to clean the ultrafiltration membrane fiber and reducing the labor intensity of the ultrafiltration membrane fiber cleaning process.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A column-type ultrafiltration membrane device, comprising a membrane housing, an inlet pipe extending through one end of the membrane housing, an outlet pipe extending through the other end of the membrane housing, a wastewater pipe connected to the membrane housing, and a wastewater valve installed on the wastewater pipe, characterized in that: An end plate is slidably disposed inside the membrane housing. A telescopic component is disposed between the end plate and the inlet pipe. The telescopic component is used to drive the end plate to move. Several flexible diaphragms are fixedly disposed on the end plate. An annular plate is disposed at the end of the flexible diaphragms away from the end plate. The inner wall of the membrane housing and the side wall of the outlet pipe are both in contact with the annular plate. A swing seat is disposed between adjacent flexible diaphragms. A driving component is disposed between the swing seat and the end plate. The driving component is used to drive the swing seat to move. Several ultrafiltration membrane fiber clusters are disposed on the swing seat. The end of the ultrafiltration membrane fiber cluster away from the swing seat is fixedly connected to the annular plate. The end plate has several dovetail grooves on the side facing the ring plate. Dovetail blocks are slidably arranged in the dovetail grooves. The dovetail blocks are fixedly connected to the swing seat on the side facing the ring plate. A first spring is fixedly arranged at one end of the dovetail block, and a second spring is fixedly arranged at the other end of the dovetail block. The ends of the first spring and the second spring away from the dovetail block are both fixedly connected to the inner wall of the dovetail groove. The driving component is used to drive the dovetail blocks to move. A first through hole is formed through the swing seat, a second through hole is formed through the dovetail block, and a third through hole is formed through the inner wall of the dovetail groove. An auxiliary tube is inserted into the first, second, and third through holes. The auxiliary tube is movably disposed in the first, second, and third through holes and is inserted between the ultrafiltration membrane fiber bundles. Several auxiliary holes are formed through the side wall of the auxiliary tube. One end of the auxiliary tube is fixedly connected to the ring plate, and the other end of the auxiliary tube is connected to an auxiliary main tube. The auxiliary main tube penetrates the membrane shell. A conical inner sleeve is fitted onto the auxiliary tube, and the conical inner sleeve is fixedly connected to the auxiliary tube. A conical outer sleeve is fitted onto the conical inner sleeve, and the outer wall of the conical inner sleeve is used to abut against the inner wall of the conical outer sleeve. The conical outer sleeve is fixedly connected to the dovetail block, and the conical outer sleeve is slidably disposed in the third through hole. The outer diameter of the conical inner sleeve near the ring plate is smaller than the outer diameter of the conical inner sleeve away from the ring plate. The inner diameter of the conical outer sleeve near the ring plate is smaller than the inner diameter of the conical outer sleeve away from the ring plate. The outer diameter of the conical inner sleeve near the ring plate, the inner diameter of the conical outer sleeve near the ring plate, and the inner diameter of the second through hole are all equal. The outer diameter of the conical inner sleeve away from the ring plate is smaller than the inner diameter of the conical outer sleeve away from the ring plate.

2. The column-type ultrafiltration membrane device according to claim 1, characterized in that: The telescopic assembly includes a telescopic seat, a telescopic piston cylinder, and a telescopic tube. The telescopic seat is fixedly connected to one end of the inlet pipe inside the membrane housing. Several supports are fixedly arranged between the side wall of the telescopic seat and the inner wall of the membrane housing. The telescopic piston cylinder is fixedly connected to the telescopic seat, and the output shaft of the telescopic piston cylinder is fixedly connected to the end plate. The telescopic tube is sleeved on the telescopic piston cylinder, with one end of the telescopic tube fixedly connected to the end plate and the other end of the telescopic tube fixedly connected to the telescopic seat. There is a gap between the side wall of the end plate and the inner wall of the membrane housing. Several inlet holes are opened through the side wall of the inlet pipe.

3. The column-type ultrafiltration membrane device according to claim 1, characterized in that: The swing seat covers the dovetail groove, the opposite surface of the flexible diaphragm is in contact with the side wall of the swing seat, the flexible diaphragm seals the gap between adjacent swing seats, an inner sealing sleeve and an outer sealing sleeve are fixedly installed on the end plate, the inner ring wall of the swing seat and the inner ring wall of the flexible diaphragm are both in contact with the inner sealing sleeve, the outer ring wall of the swing seat and the outer ring wall of the flexible diaphragm are both in contact with the outer sealing sleeve, and both the inner sealing sleeve and the outer sealing sleeve seal the gap between the swing seat and the end plate.

4. The column-type ultrafiltration membrane device according to claim 1, characterized in that: A driving cavity is formed in the end plate, and the driving assembly is located in the driving cavity. A connecting hole is formed in the inner wall of the dovetail groove. The connecting hole communicates with the driving cavity. A connecting rod is inserted through the connecting hole. The connecting rod is slidably connected to the connecting hole. One end of the connecting rod is fixedly connected to the dovetail block, and the other end of the connecting rod abuts against the driving assembly. The driving assembly is used to drive the connecting rod to move.

5. A column-type ultrafiltration membrane device according to claim 4, characterized in that: The drive assembly includes a drive motor and a drive wheel. The drive motor is fixedly mounted inside the drive cavity, and its output shaft is fixedly connected to the drive wheel. The drive wheel is rotatably mounted inside the drive cavity. A drive ring groove is formed on the side wall of the drive wheel. Several arc-shaped concave surfaces are provided on the inner wall of the drive ring groove, and arc-shaped convex surfaces are provided between adjacent arc-shaped concave surfaces. The arc-shaped concave surfaces and arc-shaped convex surfaces together form a corrugated surface. A spherical surface is provided at the end of the connecting rod away from the dovetail block. Several spheres are rotatably mounted on the spherical surface, and the spheres abut against the corrugated surface.

6. The column-type ultrafiltration membrane device according to claim 1, characterized in that: A first sealing sleeve is fitted onto the auxiliary tube. One end of the first sealing sleeve is fixedly connected to the auxiliary tube, and the other end of the first sealing sleeve is fixedly connected to the swing seat. The first sealing sleeve is used to seal the gap between the first through hole and the auxiliary tube.

7. A column-type ultrafiltration membrane device according to claim 1, characterized in that: A third sealing sleeve is fitted onto the auxiliary tube. One end of the third sealing sleeve is fixedly connected to the auxiliary tube, and the other end of the third sealing sleeve is fixedly connected to the end plate. The third sealing sleeve is used to seal the gap between the third through hole and the auxiliary tube.

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