Membrane assembly for sewage treatment

Abstract

The utility model relates to the technical field of water filtering equipment, in particular to a membrane component for sewage treatment, which comprises a filter cartridge, an end cover is fixed at the open end of the filter cartridge through threaded connection, a flushing component is fixed on the end cover, and a plurality of second annular limiting clamps with sequentially increased diameters are fixed on the inner wall of the end cover. A plurality of first annular limiting clamps of which the diameters are sequentially increased are formed on the inner wall of one end, far away from the end cover, of the filter cartridge, a membrane unit is mounted between each group of first annular limiting clamps and second annular limiting clamps, and a plurality of groups of sewage discharge holes are formed in one end, far away from the end cover, of the filter cartridge; a plugging mechanism for plugging the pollution discharge hole is fixed at one end of the filter cartridge far away from the end cover. The device has the beneficial effects that the flushing assembly is arranged at one end of the filter cartridge, and the plugging mechanism is arranged at the other end of the filter cartridge, so that dirt accumulated on the membrane unit can be flushed, and the problem that sewage is treated for a long time to block the membrane unit to affect the sewage filtering efficiency is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water filtering equipment, in particular to a membrane component for sewage treatment. Background Art

[0002] As people pay more attention to environmental protection, the sewage generated in life and production will be treated before being discharged, and MBR membrane is a way to treat sewage. MBR membrane refers to a microporous filter membrane with consistent pore size specifications and a rated pore size range of 0.001-0.15 microns. By applying appropriate pressure on one side of the membrane, solute molecules smaller than the pore size can be screened out.

[0003] The Chinese patent application number 202121912054.7 discloses a membrane assembly for sewage treatment, comprising a central tube and a membrane unit wound on the central tube, wherein the membrane unit is located in the middle of the central tube so that the two ends of the central tube extend outward from the two end faces of the membrane unit, and each is provided with an end cap having a mounting through-hole; the end cap comprises an inner mounting ring, an outer support ring and a partition connected between the inner mounting ring and the outer support ring, the partition being provided with a plurality of water holes, and the surface of the partition close to the membrane unit has a plurality of ribs connected to the inner mounting ring and the outer support ring at both ends, and the surface of the ribs away from the partition is in contact with the end face of the membrane unit. The above patent has the problem that stains produced after sewage filtration will remain between the membrane units when used for a long time. If these stains are not cleaned in time, they will adhere to and block the filtration micropores of the membrane unit, affecting the filtration efficiency of the membrane unit. Utility Model Content

[0004] The utility model proposes a membrane component for sewage treatment in order to solve the above problems.

[0005] The technical solution of the present utility model is achieved as follows:

[0006] A membrane assembly for sewage treatment, comprising a filter cartridge, one end of the filter cartridge is open, a water inlet pipe is fixed in the center of the filter cartridge, a plurality of water holes are opened on the shaft section of the water inlet pipe located inside the filter cartridge, and the water holes are arranged at intervals along the circumference and axial direction of the center tube, an end cap is fixed to the open end of the filter cartridge by a threaded connection, a hole is formed in the center of the end cap to cooperate with the water inlet pipe, a flushing assembly is fixed on the end cap, and a plurality of second annular limit cards with successively larger diameters are fixed on the inner wall of the end cap, the filter cartridge is away from A plurality of first annular limit cards with successively larger diameters are formed on the inner wall of one end of the end cover, and the positions of the first annular limit cards and the second annular limit cards correspond one to one. A membrane unit is installed between each group of the first annular limit cards and the second annular limit cards. A water outlet pipe is fixed on the outer wall of the filter cartridge, and a plurality of groups of sewage holes are formed on the end of the filter cartridge away from the end cover. A sealing mechanism for sealing the sewage holes is fixed on the end of the filter cartridge away from the end cover, and the sewage holes are distributed in the area between the membrane unit and the water inlet pipe.

[0007] Furthermore, the membrane unit includes a reverse osmosis membrane, a supporting steel mesh is provided on the water outlet side of the reverse osmosis membrane, the height of the supporting steel mesh is the same as the height of the reverse osmosis membrane, and at least two pressure rings are provided on the water inlet side of the reverse osmosis membrane, and the pressure rings are fixed together with the supporting steel mesh.

[0008] Furthermore, a plurality of reinforcing metal rods are fixed to a side of the supporting steel mesh away from the reverse osmosis membrane.

[0009] Furthermore, the flushing assembly includes a plurality of support tubes fixed on the end cover, the number of the support tubes is the same as the number of the membrane units, each of the support tubes and each group of the sewage holes are in the same space, and each of the support tubes is located at one end of the inner cavity of the filter cartridge and is connected to an annular water spray pipe, and a plurality of groups of water spray holes facing the membrane units are formed on the side wall of the water spray pipe, and the other end of all the support tubes is connected to a flushing pipe.

[0010] Furthermore, the sealing mechanism includes a rubber plug that blocks the drain hole, and a connecting rod is fixed to the center of the side of each filter cartridge sealing mechanism away from the end cover, and all the connecting rods are fixed to a bottom support plate at one end away from the rubber plug, and a through hole is formed in the center of the bottom support plate, and a threaded cover is rotatably installed in the through hole, and a threaded column that is mounted in conjunction with the threaded cover is fixed to the center of the end of the filter cartridge away from the end cover, and a threaded section that is mounted in conjunction with the threaded column is formed at one end of the threaded cover, and a pressure plate that drives the bottom support plate to move is fixed to the other end of the threaded cover.

[0011] Furthermore, the side of the bottom support plate facing the filter cartridge is an upward convex conical surface.

[0012] Furthermore, the rubber stopper is a conical boss structure, and the diameter of one end of the rubber stopper close to the drain hole is smaller than the diameter of the other end.

[0013] By adopting the above technical solution, the beneficial effect of the utility model is as follows: by arranging a flushing component at one end of the filter cartridge and a sealing mechanism at the other end, the dirt accumulated on the membrane unit can be flushed, thereby solving the problem of sewage clogging the membrane unit due to long-term sewage treatment, which affects the sewage filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative labor.

[0015] Figure 1 It is a main sectional view of the utility model;

[0016] Figure 2 It is a three-dimensional diagram of the utility model;

[0017] Figure 3 It is a side view of the utility model;

[0018] Figure 4 This is a schematic diagram of the membrane unit structure of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the blocking mechanism of the utility model.

[0020] The following are the descriptions of the reference numerals:

[0021] 1. Filter cartridge; 2. End cap; 3. First annular limit card; 4. Membrane unit; 41. Support wire mesh; 42. Reverse osmosis membrane; 43. Pressing ring; 5. Water outlet pipe; 6. Water inlet pipe; 7. Flushing assembly; 71. Support pipe; 72. Water spray pipe; 73. Flushing pipe; 8. Sealing mechanism; 81. Rubber plug; 82. Connecting rod; 83. Bottom support plate; 84. Threaded gland; 9. Threaded column; 10. Water permeable hole; 11. Second annular limit card; 12. Drain hole. DETAILED DESCRIPTION

[0022] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0023] like Figure 1-Figure 5 As shown, a membrane assembly for sewage treatment includes a filter cartridge 1, one end of the filter cartridge 1 is open, a water inlet pipe 6 is fixed in the center of the filter cartridge 1, a plurality of water permeable holes 10 are opened on the axial section of the water inlet pipe 6 located inside the filter cartridge 1, and the water permeable holes 10 are arranged at intervals along the circumference and axial direction of the center tube, the open end of the filter cartridge 1 is fixed with an end cap 2 through a threaded connection, a hole is formed in the center of the end cap 2 to cooperate with the water inlet pipe 6 for installation, a sealing ring is installed on the contact surface between the end cap 2 and the filter cartridge 1 and the water inlet pipe 6, a flushing assembly 7 is fixed on the end cap 2, a plurality of second annular limit cards 11 with successively larger diameters are fixed on the inner wall of the end cap 2, and a plurality of first annular limit cards with successively larger diameters are formed on the inner wall of the end of the filter cartridge 1 away from the end cap 2 shaped limit card 3, the first annular limit card 3 and the second annular limit card 11 correspond one to one, and a membrane unit 4 is installed between each group of first annular limit cards 3 and second annular limit cards 11. Relying on multiple annular membrane units 4, multi-stage filtration of sewage can be achieved to improve the filtration effect. A water outlet pipe 5 is fixed on the outer wall of the filter cartridge 1, and a plurality of groups of sewage holes 12 are formed at one end of the filter cartridge 1 away from the end cover 2 to facilitate the discharge of sewage during flushing. A sealing mechanism 8 for sealing the sewage holes 12 is fixed at one end of the filter cartridge 1 away from the end cover 2. The flushing component 7 and the sewage holes 12 are distributed in the area between the membrane unit 4 and the water inlet pipe 6. Clean water can be used to rinse the stains adhering to the membrane unit to avoid clogging the filter holes.

[0024] In this embodiment, the membrane unit 4 includes a reverse osmosis membrane 42, and a supporting steel wire mesh 41 is provided on the water outlet side of the reverse osmosis membrane 42. The height of the supporting steel wire mesh 41 is the same as that of the reverse osmosis membrane 42. At least two pressure rings 43 are provided on the water inlet side of the reverse osmosis membrane 42. The pressure ring 43 is fixed together with the supporting steel wire mesh 41. The reverse osmosis membrane 42 is fixed by the pressure ring 43 and the supporting steel wire mesh 41 to form a cylindrical filter structure that can filter the water in the filter cylinder 1. The supporting steel wire mesh 41 can support the reverse osmosis membrane 42 to prevent the reverse osmosis membrane 42 from deforming during filtration.

[0025] In this embodiment, in order to further improve the supporting strength of the reverse osmosis membrane 42 , a plurality of reinforcing metal rods are fixed to the side of the supporting steel mesh 41 away from the reverse osmosis membrane 42 .

[0026] In this embodiment, the flushing assembly 7 includes a plurality of support tubes 71 fixed on the end cover 2. The number of the support tubes 71 is the same as the number of the membrane units 4. Each support tube 71 and each group of sewage holes 12 are in the same space. Each support tube 71 is located at one end of the inner cavity of the filter cartridge 1 and is connected to a ring-shaped water spray pipe 72. The side wall of the water spray pipe 72 is formed with a plurality of groups of water spray holes facing the membrane unit 4. The other end of all the support tubes 71 is connected to a flushing pipe 73. During flushing, clean water enters from the flushing pipe 73 and is then sprayed from the water spray pipe 72 onto the membrane unit 4 to clean the stains adhering to its surface.

[0027] In this embodiment, the sealing mechanism 8 includes a rubber plug 81 that seals the drain hole 12. A connecting rod 82 is fixed to the center of the side of the sealing mechanism 8 of each filter cartridge 1 away from the end cover 2. The end of all the connecting rods 82 away from the rubber plug 81 is fixed to a bottom support plate 83. A through hole is formed in the center of the bottom support plate 83, and a threaded cover 84 is rotatably installed in the through hole. A threaded column 9 that is mounted in conjunction with the threaded cover 84 is fixed to the center of the end of the filter cartridge 1 away from the end cover 2. A threaded section that is mounted in conjunction with the threaded column 9 is formed at one end of the threaded cover 84, and a pressure plate that drives the bottom support plate 83 to move is fixed to the other end of the threaded cover 84. When the threaded cover 84 is controlled to rotate on the threaded column 9, the bottom support plate 83 can be driven to approach or away from the drain hole 12, thereby driving the rubber plug 81 away from or blocking the drain hole 12.

[0028] In this embodiment, the side of the bottom support plate 83 facing the filter cartridge 1 is an upwardly convex conical surface, so that the discharged sewage can automatically flow down to the edge of the bottom support plate 83.

[0029] In this embodiment, the rubber plug 81 is a conical boss structure. The diameter of one end of the rubber plug 81 close to the drain hole 12 is smaller than the diameter of the other end, which makes it easy to insert the rubber plug 81 into the drain hole 12. When the filter cartridge 1 is set vertically, the pressure of water can be used to press the rubber plug 81 to improve the sealing effect.

[0030] The working principle of the present invention is as follows: when in use, the device is installed in a sewage filtration system. Sewage enters the filter cartridge 1 from the water inlet pipe 6, is filtered by multiple membrane units 4, and is discharged from the water outlet pipe 5. At a certain time, the sewage is stopped from being discharged into the water inlet pipe 6, and the screw thread gland 84 is rotated to drive the bottom support plate 83 to move toward the filter cartridge 1. At this time, the rubber plug 81 is pushed away from the drainage hole 12 under the action of the connecting rod 82. At this time, the sewage in the filter cartridge 1 can be discharged from the drainage hole 12. At this time, clean water is passed into the flushing pipe 73. After the clean water is sprayed out from the water spray pipe 72, it rinses the surface of the reverse osmosis membrane 42, thereby washing away the dirt on the surface of the membrane unit 4, and the sewage is discharged from the drain hole 12. A collection mechanism is installed under the sealing mechanism 8 to collect the flushed sewage to avoid pollution. After the flushing is completed, the threaded cover 84 is re-tightened to keep it away from the filter cartridge 1. At this time, the threaded cover 84 drives the bottom support plate 83 to move, which will drive the rubber plug 81 to be reinserted into the drain hole 12 to block the drain hole 12, thereby preventing water from leaking from the drain hole 12 during sewage filtration.

[0031] Components not described in detail herein are prior art.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A membrane module for sewage treatment, characterized in that: The invention comprises a filter cartridge (1), wherein one end of the filter cartridge (1) is open, a water inlet pipe (6) is fixed in the center of the filter cartridge (1), a plurality of water holes (10) are opened on the shaft section of the water inlet pipe (6) located in the filter cartridge (1), and the water holes (10) are arranged at intervals along the circumferential direction and axial direction of the central tube, an end cap (2) is fixed to the open end of the filter cartridge (1) through a threaded connection, a hole is formed in the center of the end cap (2) for matching with the water inlet pipe (6), a flushing assembly (7) is fixed on the end cap (2), and a plurality of second annular limit clamps (11) with successively larger diameters are fixed on the inner wall of the end cap (2), and an inner end of the filter cartridge (1) away from the end cap (2) is provided with a plurality of second annular limit clamps (11) with successively larger diameters. A plurality of first annular limit cards (3) with successively larger diameters are formed on the wall, and the positions of the first annular limit cards (3) and the second annular limit cards (11) correspond one to one. A membrane unit (4) is installed between each group of the first annular limit cards (3) and the second annular limit cards (11). A water outlet pipe (5) is fixed on the outer wall of the filter cartridge (1). A plurality of groups of drainage holes (12) are formed at one end of the filter cartridge (1) away from the end cover (2). A blocking mechanism (8) for blocking the drainage holes (12) is fixed at one end of the filter cartridge (1) away from the end cover (2). The drainage holes (12) are distributed in the area between the membrane unit (4) and the water inlet pipe (6).

2. The membrane assembly for sewage treatment according to claim 1, characterized in that: The membrane unit (4) comprises a reverse osmosis membrane (42), a supporting steel mesh (41) is provided on the water outlet side of the reverse osmosis membrane (42), the height of the supporting steel mesh (41) is the same as the height of the reverse osmosis membrane (42), and at least two pressing rings (43) are provided on the water inlet side of the reverse osmosis membrane (42), and the pressing rings (43) are fixed together with the supporting steel mesh (41).

3. The membrane assembly for sewage treatment according to claim 2, characterized in that: A plurality of reinforcing metal rods are fixed on one side of the supporting steel wire mesh (41) away from the reverse osmosis membrane (42).

4. The membrane assembly for sewage treatment according to claim 1, characterized in that: The flushing assembly (7) includes a plurality of support tubes (71) fixed on the end cover (2), the number of the support tubes (71) being the same as the number of the membrane units (4), each support tube (71) and each group of the sewage discharge holes (12) being in the same space, and each support tube (71) being located at one end of the inner cavity of the filter cartridge (1) being connected to an annular water spray pipe (72), the side wall of the water spray pipe (72) being formed with a plurality of groups of water spray holes facing the membrane units (4), and the other ends of all the support tubes (71) being connected to a flushing pipe (73).

5. The membrane assembly for sewage treatment according to claim 1, characterized in that: The sealing mechanism (8) includes a rubber plug (81) for sealing the drain hole (12), a connecting rod (82) is fixed at the center of one side of the sealing mechanism (8) of each filter cartridge (1) away from the end cover (2), and one end of all the connecting rods (82) away from the rubber plug (81) is fixed to a bottom support plate (83), a through hole is formed in the center of the bottom support plate (83), and a threaded cover (84) is rotatably installed in the through hole, a threaded column (9) is fixed at the center of one end of the filter cartridge (1) away from the end cover (2) and is mounted in conjunction with the threaded cover (84), one end of the threaded cover (84) is formed with a threaded section mounted in conjunction with the threaded column (9), and the other end of the threaded cover (84) is fixed with a pressure plate for driving the bottom support plate (83) to move.

6. The membrane assembly for sewage treatment according to claim 5, characterized in that: The side of the bottom support plate (83) facing the filter cartridge (1) is an upward convex conical surface.

7. The membrane assembly for sewage treatment according to claim 5, characterized in that: The rubber stopper (81) is a conical boss structure, and the diameter of one end of the rubber stopper (81) close to the drain hole (12) is smaller than the diameter of the other end.

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