CN109569302B - External pressure ultrafiltration membrane element - Google Patents
External pressure ultrafiltration membrane element Download PDFInfo
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- CN109569302B CN109569302B CN201811539892.7A CN201811539892A CN109569302B CN 109569302 B CN109569302 B CN 109569302B CN 201811539892 A CN201811539892 A CN 201811539892A CN 109569302 B CN109569302 B CN 109569302B
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- 239000012528 membrane Substances 0.000 title claims abstract description 195
- 238000000108 ultra-filtration Methods 0.000 title claims abstract description 48
- 238000001914 filtration Methods 0.000 claims abstract description 79
- 238000000746 purification Methods 0.000 claims abstract description 58
- 239000012535 impurity Substances 0.000 claims abstract description 57
- 239000010410 layer Substances 0.000 claims description 69
- 239000007788 liquid Substances 0.000 claims description 27
- 238000007599 discharging Methods 0.000 claims description 7
- 239000010813 municipal solid waste Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 239000011229 interlayer Substances 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000010865 sewage Substances 0.000 abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 23
- 230000000694 effects Effects 0.000 abstract description 8
- 239000002351 wastewater Substances 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 239000012466 permeate Substances 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention belongs to the technical field of water purification equipment, and particularly relates to an external pressure ultrafiltration membrane element which comprises a first end cover, a second end cover and a purification module, wherein the first end cover and the second end cover are fixed on the ground through support legs; one end of the purification module is rotatably sleeved on the first end cover, and the other end of the purification module is rotatably sleeved on the second end cover; due to the rotary arrangement of the purification module, on one hand, residual impurities left on the purification module can be loosened conveniently, and the impurities in the evolution module can be cleaned conveniently; on the other hand, the filtering membrane in the purification module is blocked, and the purification effect on the wastewater is accelerated through the rotation of the purification module; the invention is mainly used for purifying water after primary filtration and can break a compact impurity layer formed on the surface of a filtration membrane; when purifying sewage, can carry out self-cleaning to filtering membrane's itself, effectively reduced the residual amount of impurity on the membrane surface.
Description
Technical Field
The invention belongs to the technical field of water purification equipment, and particularly relates to an external pressure ultrafiltration membrane element.
Background
The ultrafiltration membrane water purification is divided into an external pressure mode and an internal pressure mode, when the external pressure type ultrafiltration membrane is used for purifying water, stock solution permeates into the inner wall of membrane filaments from the outer wall of the membrane filaments, pollutants exist between the outer walls of membrane filament pipes, and due to the obstruction of a membrane shell, the pollutants cannot be completely taken away by direct-flow clean water, are accumulated for a long time and a month, so that the ultrafiltration membrane is blocked, and the membrane element is invalid; and when the internal pressure type ultrafiltration membrane is used for purifying water, the stock solution permeates to the outer wall from the inner wall of the membrane wire, the intercepted pollutants are remained in the tube wall of the membrane wire and can be completely flushed away by flushing water flow, and the service life is longer. In actual industrial production, continuous purification of water is easy to form a compact oxidation film on an ultrafiltration membrane element, so that the purification efficiency of the ultrafiltration membrane on sewage in actual work is influenced.
Some technical schemes of internal pressure ultrafiltration membrane elements also appear in the prior art, for example, a Chinese patent with the application number of 201220381871.9 discloses an internal pressure ultrafiltration membrane element, which belongs to the field of water purification equipment and particularly relates to an internal pressure ultrafiltration membrane element. The membrane comprises a membrane shell and is characterized in that the membrane shell is in a hollow cylindrical shape with two open ends, two end covers are respectively arranged at two ends of the membrane shell, a water inlet is formed in one end cover, and a thick water inlet is formed in the other end cover; the membrane shell is internally provided with membrane filaments, the outer walls of two ends of each membrane filament are adhered in the membrane shell through sealant, the membrane filaments are hollow, and the middle through holes are kept smooth; a water producing port is arranged on the peripheral wall of the membrane shell. The utility model discloses after the long-time drainage operation, can open both ends end cover, let in the clear water in membrane shell one end, the clear water takes away the pollutant in the membrane silk cavity inner chamber, reaches abluent purpose. After the end covers are buckled, the ultrafiltration membrane element can be put into use again, the operation is convenient and fast, and the service life of the membrane element is greatly prolonged; in the technical scheme, the sewage can be purified, and impurities in the hollow inner cavity of the membrane wire can be taken away; however, the technical scheme can not crack the compact impurity layer formed in the inner cavity, and simultaneously, the technical scheme adopts a water flow mode to clean impurities, so that the waste of water resources is caused, and the use of the device is limited.
Disclosure of Invention
In order to make up the defects of the prior art, the invention provides an external pressure ultrafiltration membrane element which is mainly used for purifying water after primary filtration and can break a compact impurity layer formed on the surface of a filtration membrane; when purifying sewage, can carry out self-cleaning to filtering membrane's itself, effectively reduced the residual amount of impurity on the membrane surface. According to the invention, the motor, the rotating rod and the purification module are mutually matched to discharge impurities outside the filtering membrane unit through the discharge hole; the filtering membrane is provided with the outer membrane and the inner membrane to increase the deformation effect of the filtering membrane, and effectively reduce the residual quantity of impurities on the outer membrane.
The technical scheme adopted by the invention for solving the technical problems is as follows: the external pressure ultrafiltration membrane element comprises a first end cover, a second end cover and a purification module, wherein the first end cover and the second end cover are fixed on the ground through support legs; one end of the purification module is rotatably sleeved on the first end cover, and the other end of the purification module is rotatably sleeved on the second end cover; due to the rotary arrangement of the purification module, on one hand, residual impurities left on the purification module can be loosened conveniently, and the impurities in the evolution module can be cleaned conveniently; on the other hand, the filtering membrane in the purification module is blocked, and the purification effect on the wastewater is accelerated by the rotation of the purification module.
The first end cover is provided with a first liquid inlet, and the second end cover is provided with a first liquid outlet; the purification module comprises a rotating cylinder and an ultrafiltration membrane device, and the rotating cylinder is seamlessly and rotatably sleeved on the outer surfaces of the first end cover and the second end cover; the ultrafiltration membrane device is fixedly arranged on the inner wall of the rotating cylinder through a fixed rod; wherein,
the ultrafiltration membrane device comprises a first bottom plate, a second bottom plate and a filtration membrane unit; the first bottom plate is connected with the second bottom plate through the filtering membrane unit; the first bottom plate is fixedly connected with a rotating shaft of the motor through a rotating rod; the rotating rod is rotatably arranged on the first end cover and is used for enabling the first end cover to support the ultrafiltration membrane device, so that the structural strength between the ultrafiltration membrane device and the first bottom plate is improved; on the other hand, the motor drives the ultrafiltration membrane device to rotate through the rotating rod, and the ultrafiltration membrane device is used for loosening impurities in the filtration membrane unit, so that the impurities are convenient to clean. A second liquid outlet is formed in the center of the second bottom plate; the filtering membrane unit comprises a plurality of filtering membranes, each filtering membrane is cylindrical, and the plurality of filtering membranes are concentrically arranged on the first bottom plate and the second bottom plate; the sewage is filtered layer by the plurality of filtering membranes from outside to inside, so that the purifying effect of the sewage is improved.
Preferably, the diameter of the first bottom plate is smaller than the inner diameter of the first end cover, and the second bottom plate is seamlessly and fixedly installed on the inner wall of the rotary drum and used for enabling the filtering liquid to flow from the outermost layer to the filtering membrane on the inner layer of the plurality of filtering membranes.
Preferably, filterable sewage flows into the inside to an end cover through a inlet, and sewage then flows into to filtration membrane unit through the crack of a bottom plate and an end cover, and sewage passes a plurality of filtration retes in proper order in filtration membrane unit outside-in, and the water after the purification flows out through No. two liquid outlets, a liquid outlet.
Preferably, a through hole is formed in the center of the cover surface of the second end cover, a rotating plate is arranged on the outer surface of the second end cover, the rotating plate is in seamless fixed connection with a second liquid outlet on the second bottom plate through a hollow pipe, and the rotating plate supports the filtering membrane unit through matching with the hollow pipe, so that the structural strength of the device is further improved; meanwhile, the closed space formed between the second bottom plate and the second end cover can collect impurities in the filtering membrane unit, and the using efficiency of the device is improved.
Preferably, be equipped with the discharge gate on No. two bottom plates, be equipped with the blow vent on No. two end covers, the blow vent is used for connecting the suction pump, and it is arranged in clearing up the impurity in the filtration membrane. Be equipped with the automatically-controlled door on the discharge gate, it is used for controlling opening and shutting of the ejection of compact, after this device work is accomplished, remains a large amount of impurity in the purification unit, opens the discharge gate through the automatically-controlled door this moment, and the suction pump passes through blow vent, discharge gate and will purify the impurity in the unit and suction to the airtight space that forms between No. two bottom plates and No. two end covers, then come impurity discharge through arranging the miscellaneous mouth.
Preferably, a discharge port is formed in the surface of the rotating cylinder, and a sealing cover is arranged on the discharge port. After the sewage purification is finished, the closed cover is opened, the motor drives the rotating cylinder to rotate through the rotating rod, and at the moment, impurities remained on the outer surface of the purification module are discharged through the impurity discharging port; the rotation of a rotary drum can centrifuge impurities, and the discharge efficiency of the impurity discharge port to the impurities is accelerated.
Preferably, each of the plurality of filter membranes comprises an outer membrane and an inner membrane, and the outer membrane is of a sandwich structure; the outer layer film is fixedly arranged on the second bottom plate; the inner layer film is fixedly arranged on the first bottom plate; the inner layer film is embedded in the outer layer film, and one end of the inner layer film, which is positioned in the interlayer of the outer layer film, is fixedly arranged on the second bottom plate through the elastic piece. When filtration membrane purified sewage, when filtration membrane's surface formed compact impurity and caused filtration membrane's permeability to descend, at this moment under the effect of rivers, filtration membrane can take place to warp to it slides for outer membrane to be the inner membrane, thereby loosens the impurity on filtration membrane surface, and then has improved the purification efficiency of filtration membrane to sewage.
Preferably, the inner wall of the outer layer film is provided with a first bulge, and the first bulge is in a circular ring shape and can be seamlessly attached and slide with the inner layer film; the inner layer film is provided with a second bulge which can be seamlessly attached and slide with the outer layer film. When the inner layer membrane slides relative to the outer layer membrane, the first bulge and the second bulge are mutually extruded to cause the outer layer membrane to generate elastic deformation, so that the compact layer formed by covering impurities on the outer layer membrane is conveniently broken, the residue of the impurities on the outer layer membrane is effectively reduced, and the working efficiency of the filtering membrane is further improved.
The invention has the beneficial effects that:
1. the external pressure ultrafiltration membrane element comprises a first end cover, a second end cover and a purification module, wherein the first end cover is provided with a first liquid inlet, and the second end cover is provided with a first liquid outlet; the purification module can rotate relative to the first end cover and the second end cover, so that centrifugal separation of impurity layers on the purification module is realized; the purification module comprises a rotating cylinder and an ultrafiltration membrane device, and the rotating cylinder is seamlessly and rotatably sleeved on the outer surfaces of the first end cover and the second end cover; the ultrafiltration membrane device is fixedly arranged on the inner wall of the rotating cylinder through the fixing rod, sewage flows into the ultrafiltration membrane device through the first end cover and a crack of the ultrafiltration membrane device, the sewage sequentially permeates into the ultrafiltration membrane device from the outer surface of the ultrafiltration membrane device, and finally the purified sewage is discharged through the second liquid outlet and the first liquid outlet, so that the sewage purification efficiency is further improved.
2. According to the external pressure ultrafiltration membrane element, the filtration membrane comprises an inner layer membrane and an outer layer membrane, wherein the outer layer membrane is of a sandwich structure and is used for limiting the inner layer membrane, so that the inner layer membrane can slide in the outer layer membrane; the outer layer film is fixedly arranged on the second bottom plate, and the inner layer film is fixedly arranged on the first bottom plate; inner membrane passes through elastic component and No. two bottom plate fixed connection, and outer membrane passes through elastic component and a bottom plate fixed connection, and the filter membrane that the messenger is used for after warping can the reconversion to the purification efficiency of filter membrane to sewage has been improved.
3. According to the external pressure ultrafiltration membrane element, the first bulge is arranged on the inner wall of the outer membrane, the second bulge is arranged on the inner wall of the inner membrane, the first bulge and the second bulge are both circular rings, and the first bulge and the second bulge are mutually extruded to cause the outer membrane to generate elastic deformation, so that a compact impurity layer formed on the surface of the outer membrane is crushed, and the sewage purification efficiency of the filtration membrane is effectively improved.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a front view of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic structural view of a filtration membrane of the present invention;
FIG. 4 is a partial enlarged view of B in FIG. 2;
in the figure: end cover 1, No. two end cover 11, purification module 2, inlet 12, No. one liquid outlet 13, a rotating cylinder 3, milipore filter device 4, bottom plate 41, No. two bottom plates 42, filtration membrane unit 43, dwang 44, motor 45, No. two liquid outlets 46, filtration membrane 47, air vent 112, discharge gate 421, closed cover 422, outer membrane 471, inner layer membrane 472, arch 473, No. two arch 474.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 4, the external pressure ultrafiltration membrane element of the present invention comprises a first end cap 1, a second end cap 11 and a purification module 2, wherein the first end cap 1 and the second end cap 11 are fixed on the ground through support legs; one end of the purification module 2 is rotatably sleeved on the first end cover 1, and the other end of the purification module 2 is rotatably sleeved on the second end cover 11; due to the rotary arrangement of the purification module 2, on one hand, residual impurities left on the purification module 2 are loosened conveniently, and the impurities in the evolution module are cleaned conveniently; on the other hand, the filtering membrane 47 in the purification module 2 is clogged, and the purification effect of the wastewater is accelerated by the rotation of the purification module 2.
The first end cover 1 is provided with a first liquid inlet 12, and the second end cover 11 is provided with a first liquid outlet 13; the method is characterized in that: the purification module 2 comprises a rotary cylinder 3 and an ultrafiltration membrane device 4, wherein the rotary cylinder 3 is sleeved on the outer surfaces of the first end cover 1 and the second end cover 11 in a seamless and rotatable manner; the ultrafiltration membrane device 4 is fixedly arranged on the inner wall of the rotary cylinder 3 through a fixed rod 14; wherein,
the ultrafiltration membrane device 4 comprises a first bottom plate 41, a second bottom plate 42 and a filtration membrane unit 43; the first bottom plate 41 is connected with the second bottom plate 42 through a filtering membrane unit 43; the first bottom plate 41 is fixedly connected with a rotating shaft of a motor 45 through a rotating rod 44; the rotating rod 44 is rotatably mounted on the first end cover 1 and is used for enabling the first end cover 1 to support the ultrafiltration membrane device 4, so that the structural strength between the ultrafiltration membrane device 4 and the first bottom plate 41 is improved; on the other hand, the motor 45 drives the ultrafiltration membrane device 4 to rotate through the rotating rod 44, and is used for loosening impurities in the filtration membrane unit 43, so that the impurities are convenient to clean. A second liquid outlet 46 is formed in the center of the second bottom plate 42; the filtering membrane unit 43 comprises a plurality of filtering membranes 47, each filtering membrane 47 is cylindrical, and the plurality of filtering membranes 47 are concentrically mounted on the first base plate 41 and the second base plate 42; the sewage is filtered layer by the plurality of filtering membranes 47 from outside to inside, so that the purifying effect of the sewage is improved.
The diameter of the first bottom plate 41 is smaller than the inner diameter of the first end cover 1, and the second bottom plate 42 is fixedly installed on the inner wall of the rotary drum 3 in a seamless mode and is used for enabling filtrate to flow from the outermost layer of the filtering membranes 47 to the filtering membrane 47 of the inner layer.
During operation, filterable sewage flows into the inside to an end cover 1 through a inlet 12, and sewage then flows into to filtration membrane unit 43 through the crack of a bottom plate 41 and an end cover 1, and sewage passes a plurality of filtration membrane 47 layers in proper order from the outside to the inside in filtration membrane unit 43, and the water after the purification flows out through No. two liquid outlets 46, a liquid outlet 13.
The center of the cover surface of the second end cover 11 is provided with a through hole, the outer surface of the second end cover 11 is provided with a rotating plate, the rotating plate is in seamless fixed connection with a second liquid outlet 46 on a second bottom plate 42 through a hollow pipe, and the rotating plate is matched with the hollow pipe to support the filtering membrane unit 43, so that the structural strength of the device is further improved; meanwhile, the closed space formed between the second bottom plate 42 and the second end cover 11 can collect impurities in the filtering membrane unit 43, so that the use efficiency of the device is improved.
Be equipped with discharge gate 421 on No. two bottom plates 42, be equipped with the blow vent 112 on No. two end covers 11, blow vent 112 is used for connecting the suction pump, and it clears up the impurity in filtration membrane 47 through taking out the negative pressure to No. two end covers. Be equipped with the automatically-controlled door on the discharge gate 421, it is used for controlling opening and shutting of ejection of compact, after this device work is accomplished, remains a large amount of impurity in the purification unit, opens discharge gate 421 through the automatically-controlled door this moment, and the suction pump will purify the impurity in the unit and pump to the airtight space that forms between No. two bottom plates 42 and No. two end covers 11 through blow vent 112, discharge gate 421 in, then discharge impurity through arranging the miscellaneous mouth.
The surface of the rotating cylinder 3 is provided with a trash discharging port, and the trash discharging port is provided with a sealing cover 422. After the sewage purification is finished, the closed cover 422 is opened, the motor 45 drives the rotating cylinder 3 to rotate through the rotating rod 44, and at the moment, impurities remained on the outer surface of the purification module 2 are discharged through the impurity discharging port; the rotation of the rotary drum 3 can centrifuge impurities, and the discharge efficiency of the impurity discharge port to the impurities is accelerated.
Each filter membrane 47 of the plurality of filter membranes 47 comprises an outer membrane 471 and an inner membrane 472, wherein the outer membrane 471 is a sandwich structure; the outer layer film 471 is fixedly arranged on the second bottom plate 42; the inner film 472 is fixedly arranged on the first bottom plate 41; the inner film 472 is embedded in the outer film 471, and one end of the inner film 472 in the interlayer of the outer film 471 is fixedly mounted on the second bottom plate 42 through an elastic member, and the outer film 471 is fixedly mounted on the first bottom plate 41 through an elastic member. When the filtering membrane 47 purifies the sewage, when dense impurities are formed on the surface of the filtering membrane 47, so that the permeability of the filtering membrane 47 is reduced, the filtering membrane 47 deforms under the action of water flow, the inner layer membrane 472 slides relative to the outer layer membrane 471, the impurities on the surface of the filtering membrane 47 are loosened, and the purification efficiency of the filtering membrane 47 on the sewage is improved.
A first protrusion 473 is arranged on the inner wall of the outer layer film 471, and the first protrusion 473 is in the shape of a circular ring and can be in seamless fit with and slide on the inner layer film 472; the inner film 472 is provided with a second protrusion 474 which can be seamlessly attached and slid with the outer film 471. When the inner layer film 472 slides relative to the outer layer film 471, the first protrusions 473 and the second protrusions 474 are squeezed with each other to enable the outer layer film 471 to be elastically deformed, so that the dense layer formed on the outer layer film 471 by covering impurities is conveniently broken, the residues of the impurities on the outer layer film 471 are effectively reduced, and the working efficiency of the filtering film 47 is improved.
The elastic member is one of an elastic rope and a spring.
When the water purifier works, filtered sewage flows into the first end cover 1 through the first liquid inlet 12, then flows into the filtering membrane unit 43 through a gap between the first bottom plate 41 and the first end cover 1, sequentially passes through a plurality of filtering membrane 47 layers from outside to inside in the filtering membrane unit 43, and purified water flows out through the second liquid outlet 46 and the first liquid outlet 13;
meanwhile, when the surface of the filter membrane 47 is covered with a dense impurity layer, so that the filtering efficiency of the filter membrane 47 is affected, at this time, a liquid level difference is formed between the inner layer and the outer layer of the filter membrane 47, so that the inner layer membrane 472 slides relative to the outer layer membrane 471, and the second protrusions 474 on the inner layer membrane 472 and the first protrusions 473 on the outer layer membrane 471 are matched with each other to elastically deform the surface of the outer layer membrane 471, so that impurities on the filter membrane 47 are crushed, and the filter membrane 47 can repeatedly work;
after the work is finished, filtering impurities in the purification unit, opening a discharge hole 421 through an automatic door, pumping negative pressure to the second end cover 11 through a suction pump to pump the impurities in the purification unit into the second end cover 11, and then discharging the impurities in the second end cover 11 through a impurity discharge hole; the sealing cover 422 is opened again, the motor 45 is turned on to drive the purification module 2 to rotate, and impurities remained on the outermost layer of the filtering membrane unit 43 are discharged.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. An external pressure ultrafiltration membrane element comprises a first end cover (1), a second end cover (11) and a purification module (2), wherein the first end cover (1) and the second end cover (11) are fixed on the ground through support legs; one end of the purification module (2) is rotatably sleeved on the first end cover (1), and the other end of the purification module (2) is rotatably sleeved on the second end cover (11); a first liquid inlet (12) is formed in the first end cover (1), and a first liquid outlet (13) is formed in the second end cover (11); the method is characterized in that: the purification module (2) comprises a rotating cylinder (3) and an ultrafiltration membrane device (4), and the rotating cylinder (3) is seamlessly and rotatably sleeved on the outer surfaces of a first end cover (1) and a second end cover (11); the ultrafiltration membrane device (4) is fixedly arranged on the inner wall of the rotary cylinder (3) through a fixed rod (14); wherein,
the ultrafiltration membrane device (4) comprises a first bottom plate (41), a second bottom plate (42) and a filtration membrane unit (43); the first bottom plate (41) is connected with the second bottom plate (42) through a filtering membrane unit (43); the first bottom plate (41) is fixedly connected with a rotating shaft of a motor (45) through a rotating rod (44); a second liquid outlet (46) is formed in the center of the second bottom plate (42); the filtering membrane unit (43) comprises a plurality of filtering membranes (47), each filtering membrane (47) is cylindrical, and the plurality of filtering membranes (47) are concentrically arranged on a first bottom plate (41) and a second bottom plate (42);
the diameter of the first bottom plate (41) is smaller than the inner diameter of the first end cover (1), and the second bottom plate (42) is fixedly installed on the inner wall of the rotary drum (3) in a seamless mode and used for enabling filtrate to flow into the filtering membrane (47) on the inner layer from the outermost layer of the filtering membranes (47);
each filter membrane (47) of the plurality of filter membranes (47) comprises an outer membrane (471) and an inner membrane (472), the outer membrane (471) being of a sandwich structure; the outer layer film (471) is fixedly arranged on the second bottom plate (42); the inner film (472) is fixedly arranged on the first bottom plate (41); the inner layer film (472) is embedded in the outer layer film (471), and one end, positioned in the interlayer of the outer layer film (471), of the inner layer film (472) is fixedly arranged on the second bottom plate (42) through an elastic piece; the outer layer film (471) is fixedly installed on the first base plate (41) through an elastic piece.
2. An external pressure ultrafiltration membrane element according to claim 1 wherein: the center of the cover surface of the second end cover (11) is provided with a through hole, the outer surface of the second end cover (11) is provided with a rotating plate, and the rotating plate is connected with a second liquid outlet (46) on the second bottom plate (42) in a seamless and fixed mode through a hollow pipe.
3. External pressure ultrafiltration membrane element according to claim 1 or 2, characterized in that: be equipped with discharge gate (421) on No. two bottom plates (42), be equipped with blow vent (112) on No. two end covers (11), blow vent (112) are used for connecting the suction pump, and it is arranged in clearing up the impurity in filtration membrane (47).
4. External pressure ultrafiltration membrane element according to claim 1 or 2, characterized in that: the surface of the rotating cylinder (3) is provided with a trash discharging port, and a sealing cover (422) is arranged on the trash discharging port.
5. An external pressure ultrafiltration membrane element according to claim 1 wherein: a first bulge (473) is arranged on the inner wall of the outer layer film (471), and the first bulge (473) is in a circular ring shape and can be in seamless fit with and slide on the inner layer film (472); the inner layer film (472) is provided with a second bump (474) which can be seamlessly attached and slide with the outer layer film (471).
6. An external pressure ultrafiltration membrane element according to claim 5 wherein: the elastic member is one of an elastic rope and a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811539892.7A CN109569302B (en) | 2018-12-17 | 2018-12-17 | External pressure ultrafiltration membrane element |
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| CN201811539892.7A CN109569302B (en) | 2018-12-17 | 2018-12-17 | External pressure ultrafiltration membrane element |
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| CN109569302A CN109569302A (en) | 2019-04-05 |
| CN109569302B true CN109569302B (en) | 2021-07-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10174986A (en) * | 1996-12-20 | 1998-06-30 | Matsushita Electric Works Ltd | Septic tank |
| US7998349B2 (en) * | 2005-10-11 | 2011-08-16 | Millipore Corporation | Integrity testable multilayered filter device |
| CN201586483U (en) * | 2009-11-20 | 2010-09-22 | 苏州工业园区意诺克环境技术有限公司 | Novel rotary membrane separation device |
| CN204017674U (en) * | 2014-09-01 | 2014-12-17 | 福建宏远集团有限公司 | A kind of water-purifying filter |
| CN205832979U (en) * | 2016-06-16 | 2016-12-28 | 深圳市九牧水处理科技有限公司 | A kind of membrane component cleans vibrating machine |
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2018
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