CN111229042B - Antifouling anti-blocking micro-scale ultrafiltration membrane device - Google Patents
Antifouling anti-blocking micro-scale ultrafiltration membrane device Download PDFInfo
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- CN111229042B CN111229042B CN202010053268.7A CN202010053268A CN111229042B CN 111229042 B CN111229042 B CN 111229042B CN 202010053268 A CN202010053268 A CN 202010053268A CN 111229042 B CN111229042 B CN 111229042B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/147—Microfiltration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/18—Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/20—Accessories; Auxiliary operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/08—Prevention of membrane fouling or of concentration polarisation
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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
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B1/00—Methods or layout of installations for water supply
- E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
- E03B1/041—Greywater supply systems
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
Abstract
The invention discloses an antifouling and anti-blocking micro-scale ultrafiltration membrane device, relates to a filter membrane device, and aims to solve the problems that the existing filter membrane is generally in a hole type membrane silk structure, membrane holes and the surface of the membrane are easy to deposit and block after long-term use, and the membrane needs to be replaced periodically; a plurality of micro-scale membrane bundles are fixed in the membrane frame in parallel at equal intervals; the micro-scale diaphragm bundle comprises a diaphragm keel and a plurality of pairs of micro-scale diaphragms; the membrane keel comprises a keel outer tube and a transmission rod, and the transmission rod is sleeved in the keel outer tube; the side wall of the keel outer pipe is provided with a plurality of pairs of slots, the pairs of slots are symmetrically arranged by taking the central axis of the keel outer pipe as a symmetry axis, and the slots positioned on the same side are distributed on the same straight line at equal intervals; the pair of slots are correspondingly provided with a pair of micro-scale diaphragms, and the roots of the micro-scale diaphragms penetrate through the slots and are hinged with the transmission rod; when the transmission rod moves along the axial direction of the transmission rod, the transmission rod can be enabled to move relative to the outer tube of the keel, and the root of the micro-scale diaphragm is pulled.
Description
Technical Field
The invention relates to a filter membrane device, in particular to a scale type filter membrane device.
Background
The existing filter membrane is generally in a hole type membrane silk structure, because the pore diameter is limited, the membrane pores are easy to block, the membrane pores and the surface of the membrane are easy to deposit and block after long-term use, and the membrane pores and the surface of the membrane need to be replaced regularly, so that the operation cost in the use process is increased.
Disclosure of Invention
The invention aims to solve the problems that the existing filter membrane is generally in a hole-type membrane silk structure, membrane holes and the surface of the membrane are easy to deposit and block after long-term use and need to be replaced regularly, and provides an antifouling and anti-blocking micro-scale ultrafiltration membrane device.
The invention relates to an antifouling and anti-blocking micro-scale ultrafiltration membrane device which comprises a membrane frame and a plurality of micro-scale membrane bundles;
a plurality of micro-scale membrane bundles are fixed in the membrane frame in parallel at equal intervals;
the micro-scale diaphragm bundle comprises a diaphragm keel and a plurality of pairs of micro-scale diaphragms;
the membrane keel comprises a keel outer tube and a transmission rod, and the transmission rod is sleeved in the keel outer tube;
the side wall of the keel outer pipe is provided with a plurality of pairs of slots, the pairs of slots are symmetrically arranged by taking the central axis of the keel outer pipe as a symmetry axis, and the slots positioned on the same side are distributed on the same straight line at equal intervals;
the pair of slots are correspondingly provided with a pair of micro-scale diaphragms, and the roots of the micro-scale diaphragms penetrate through the slots and are hinged with the transmission rod;
when the transmission rod moves along the axial direction of the transmission rod, the transmission rod can be enabled to move relative to the outer tube of the keel, and the root of the micro-scale diaphragm is pulled, so that the micro-scale diaphragm bundle is switched between the first posture and the second posture.
The invention has the beneficial effects that: but this milipore filter device wide application in the filtration in fields such as surface water, sea water, normal water, municipal sewage and industrial waste water, has following advantage:
the ultrafiltration membrane constructed by the micro-phosphorus membrane can break through the conventional membrane pore blocking and pore diameter limitation, reduces the membrane pore and membrane surface deposition blocking on the premise of not reducing the separation performance and water permeability, and reduces the operation cost in the use process.
Drawings
FIG. 1 is a schematic structural diagram of a main view of an antifouling and anti-blocking micro-scale ultrafiltration membrane device of the invention;
FIG. 2 is a schematic structural diagram of a first state of a micro-scale membrane bundle in the antifouling and anti-blocking micro-scale ultrafiltration membrane device;
FIG. 3 is a structural diagram of a second state of a micro-scale membrane bundle in the antifouling and anti-blocking micro-scale ultrafiltration membrane device of the invention;
FIG. 4 is a schematic diagram of the principle of forward filtration of incoming water by the antifouling and anti-blocking micro-scale ultrafiltration membrane device.
Detailed Description
The first embodiment is as follows: the antifouling and anti-blocking micro-scale ultrafiltration membrane device comprises a membrane frame 1 and a plurality of micro-scale membrane bundles 2;
a plurality of micro-scale membrane bundles 2 are fixed in the membrane frame 1 in parallel at equal intervals;
the micro-scale diaphragm bundle 2 comprises a diaphragm keel 3 and a plurality of pairs of micro-scale diaphragms 4;
the membrane keel 3 comprises a keel outer tube 5 and a transmission rod 6, and the transmission rod 6 is sleeved in the keel outer tube 5;
the side wall of the keel outer tube 5 is provided with a plurality of pairs of slots 7, the pairs of slots 7 are symmetrically arranged by taking the central axis of the keel outer tube 5 as a symmetry axis, and the slots 7 positioned on the same side are distributed on the same straight line at equal intervals;
a pair of micro-scale diaphragms 4 are correspondingly arranged in the pair of slots 7, and the roots of the micro-scale diaphragms 4 penetrate through the slots 7 to be hinged with the transmission rods 6;
when the transmission rod 6 moves along the axial direction of the transmission rod 6, the transmission rod 6 can be enabled to be displaced relative to the keel outer tube 5, the root of the micro-scale membrane 4 is pulled, and the micro-scale membrane bundle 2 is enabled to be switched between the first posture and the second posture.
Specifically, as shown in fig. 1, the ultrafiltration membrane device is different from a conventional common membrane material. The ultrafiltration membrane device is generally in a flat plate shape, and membrane components, namely membrane keels 3, which are vertical to a bottom edge membrane frame 1 are uniformly distributed in the range of the membrane frame 1 according to an array. A plurality of pairs of micro-scale membranes 4 are arranged on the single membrane keel 3 to serve as filtering scales, each pair of micro-scale membranes 4 are leaf-shaped and are uniformly arranged according to a certain interval, the interval between each pair of micro-scale membranes 4 is uniform, and the gap between each pair of micro-scale membranes 4 is about 0.01-0.1 mu m.
As shown in fig. 2 and 3, the structure of the micro scale of the ultrafiltration membrane apparatus: a plurality of groups of symmetrical micro-scale diaphragms 4 are uniformly distributed on each diaphragm keel 3, and the angle between each micro-scale diaphragm 4 and the diaphragm keel 3 is kept consistent under the same posture, so that a micro-scale diaphragm bundle 2 is formed. The micro-scale membrane bundles 2 are distributed in the membrane frame 1 in parallel, and the membrane keels 3 are inserted into the micro-scale membrane bundle clamping grooves 9 of the micro-scale membrane bundles 2 on the membrane frame 1. The micro-scale film bundles 2 are uniformly distributed.
The micro-scale diaphragm bundle 2 is characterized in that the tail ends of the micro-scale diaphragms 4 and the tail ends of the micro-scale diaphragms 4 are an ancient type of spoon heads, and the micro-scale diaphragms can rotate after being inserted into the diaphragm keels 3, so that the postures of the micro-scale diaphragm bundle 2 can be adjusted, specifically, the single micro-scale diaphragms 4 are loaded in the slots 7 in the diaphragm keels 3, the slots 7 are rectangular or other shapes capable of forcing the micro-scale diaphragms 4 to change states, and the tail ends of the micro-scale diaphragms 4 are inserted into the slots 7. Meanwhile, a transmission rod 6 is arranged in a keel outer tube 5 of the membrane keel 3, the transmission rod 6 is connected with the tail end of the micro-scale membrane 4 in each slot 7, and two ends of the transmission rod 6 are arranged on the template frame.
The transfer line 6 can be for having sheathed tube screw rod, this screw rod middle part is the polished rod and the outer wall cover is equipped with the sleeve pipe (sheathed tube both ends are spacing by spacing portion on the screw rod, make unable axial motion along the screw rod, but the screw rod can rotate for the sleeve pipe), the both ends of screw rod have the external screw thread, the both ends of membrane fossil fragments 3 have the internal thread, transfer line 6 can be through screw-thread fit, and then convert rotary motion into linear motion, sheathed tube lateral wall is connected with little scale diaphragm 4, when the screw rod rotates, because the sleeve pipe is kept not changeing by the restriction of little scale diaphragm 4, but can follow the screw rod and be linear motion, thereby adjust the angle of little scale diaphragm 4 for membrane fossil fragments 3, can be through drive mechanism such as gear, connect the transmission of a plurality of transfer lines 6, thereby carry out unified regulation.
The micro-scale membrane 4 structure of the ultrafiltration membrane device can be set at any angle by changing the external profiles of the slot 7 and the root of the micro-scale membrane 4, so that solid particles in the water can be directionally filtered and intercepted as required by setting the angle of the micro-scale membrane 4. When the anti-fouling and anti-blocking membrane is adjusted to a certain angle, water molecules can pass through the anti-fouling and anti-blocking membrane, and meanwhile, impurities such as inorganic salts, organic matters, colloids, bacteria, viruses and the like in water are intercepted. When the angle of the micro-scale membrane 4 is adjusted to a proper angle, the membrane can intercept organic matters, residual chlorine and other pollution impurities in the sewage.
Meanwhile, the ultrafiltration membrane device component adopts a modular design, and can be configured with the filling density of the multi-layer micro-scale membrane bundle 2 and flexibly set the number and the filtering angle of the micro-scale membranes 4 according to different types of inlet water. Moreover, the micro-scale membrane bundles 2 are independent from each other and can be washed on line.
The ultrafiltration membrane device carries out cross flow filtration, the special structure of the micro-scale membrane 4 can freely adjust the size of the membrane gap, and simultaneously all the micro-scale membranes 4 on the micro-scale membrane bundle 2 arranged in the template can synchronously move. A first layer of micro-scale membrane bundles 2 with the same inclination angle can be arranged in the membrane frame 1, and then a second layer of micro-scale membrane bundles 2 are set at intervals of a certain height. The layered arrangement greatly improves the filling density of the ultrafiltration membrane device, and the filtration area of the membrane is greatly increased by 2 layers of the multi-layer micro-scale membrane bundles, so that the antifouling and anti-blocking membrane can have better ultrafiltration cross flow characteristics and can efficiently intercept bovine serum albumin and the like. Due to the micro-angle structure of the micro-scale membrane 4, the surface roughness of the membrane plate formed by the membrane bundle is improved, and the water flux of the ultrafiltration membrane device can be improved.
Best mode for carrying out the invention this example is a further description of the first embodiment, in this example,
as shown in fig. 2, the first posture is:
the included angle between the micro-scale membranes 4 and the membrane keel 3 is 40-50 degrees, the angle between two micro-scale membranes 4 in the paired micro-scale membranes is 110-160 degrees, and a plurality of micro-scale membrane bundles 2 form a wave-shaped surface;
the second posture is as follows:
as shown in fig. 3, the angle between the micro-scale film pieces 4 and the film keel 3 is 90 °, the angle between two micro-scale film pieces 4 in the pair of micro-scale film pieces is 180 °, and the plurality of micro-scale film pieces 2 form a plane.
Specifically, the single micro-scale diaphragms 4 and the film keels 3 form an angle of about 45 degrees, and the included angle between the two micro-scale diaphragms 4 of the single pair of micro-scale diaphragms 4 is about 110-160 degrees.
After rotation, the two micro-scale diaphragms and the keel form a horizontal plane.
Specifically, as shown in fig. 2 and 3, the angle between the micro-scale membrane 4 and the membrane keel 3 can be set by adjusting the position of the micro-scale membrane 4 in the slot 7. When the membrane module is used for filtering sewage, the angle between the micro-scale membrane 4 and the membrane keel 3 can be adjusted in advance according to the particle size of solid particles, namely, the tail end of the micro-scale membrane 4 is adjusted to one side of the slot 7, for example, set at 45 degrees. When the filtered sewage is changed, the membrane pollution can be lightened from the source, and the membrane blockage caused by passive filtration is avoided. When carrying out the membrane clearance, rotate transfer line 6 on the membrane frame 1, the little scale diaphragm 4 in every slot 7 of adjustable makes it perpendicular with membrane fossil fragments 3, so far, all slots 7 and membrane fossil fragments 3 locate on the coplanar, can adopt the mode of scraping the brush to handle the surface contamination of this device, can greatly reduce manpower and materials.
Because the micro-scale membrane bundles 2 are arranged in parallel, the micro-scale membrane bundles are uniform and wavy from the overlooking angle. The arrangement and arrangement of the micro-scale membranes 4 enable the micro-scale membranes to have elasticity similar to fluff, when water flow impacts, the water pressure causes the micro-scale membranes 4 to slightly bend down, solid particles in filtered sewage impact the smooth edges of the top ends of the micro-scale membranes 4, micro-elasticity is generated to bounce the micro-scale membranes, and liquid sewage flows into gaps among the micro-scale membranes 4 along the force of the liquid sewage, so that the filtering is completed. Different from the common cross flow and screen filtration, the anti-fouling and anti-blocking ultrafiltration membrane device uses the micro-scale membrane 4 which is not easy to block the membrane holes and can selectively block. The micro-scale membrane 4 does not need a gap with a regular size in a filtering mode, and can intercept solid particles by utilizing a self-structure clearance and throw the solid particles to the periphery, and simultaneously allow fluid to pass through, so that selective filtering is realized, and membrane blockage is greatly avoided.
As shown in fig. 4, each of the micro-scale film bundles 2 is perpendicular to two opposite sides of the film frame 1. Due to the special structure of the structure, when the micro-scale membrane 4 and the membrane keel 3 form an angle of 45 degrees and the micro-scale membrane 4 inclines upwards, the ultrafiltration membrane device can filter sewage entering from the lower side, and the water flow direction is consistent with the inclination direction of the micro-scale membrane 4, namely, the incoming water is filtered positively.
Similarly, when the micro-scale membranes 4 incline downwards and the micro-scale membranes 4 and the membrane keels 3 form an angle of 45 degrees, the sewage entering from the lower side has an opposite inclination angle with the micro-scale membranes 4, and due to the special structure of the micro-scale membranes 4, solid particles in the incoming water bounce due to the same action principle and change the motion track, so that the liquid sewage flows into gaps of the micro-scale membranes 4 along the same force. Therefore, the ultrafiltration membrane device can realize double filtration of forward water inlet (consistent with the inclination angle of the membrane) and reverse water inlet (contrary to the inclination angle of the membrane). The double effect of the membrane filtration is greatly enhanced.
Therefore, the antifouling anti-blocking film with the structure can accept forward and reverse water inflow, so that higher inflow suspended matter concentration can be borne, the pretreatment in the early stage is greatly reduced, and the process cost is reduced.
Besides, for the cleaning of the ultrafiltration membrane device, a conventional backwashing membrane cleaning mode is adopted, and the micro-scale membrane 4 and the membrane keel 3 can be spread into a plane during cleaning through the special corner arrangement of the micro-scale membrane 4 of the ultrafiltration membrane device, so that the scraping and brushing cleaning ways are increased. In this way the membrane life is enhanced and its good performance is maintained.
In the present embodiment, the head of the micro-scale film 4 is an arc-shaped rounded corner 4-1, the upper surface and the lower surface of the micro-scale film 4 are both provided with a raised edge angle 4-2 having a herringbone cross section, and the angle of the raised edge angle 4-2 is an obtuse angle.
Specifically, as shown in fig. 3 and 4, the cross-section of the middle section of the micro-scale membrane 4 is prism-shaped, and the top edge is rounded to form a rounded corner 4-1. The convex edge angle 4-2 at the middle section of the micro-scale diaphragm 4 is an obtuse angle which is about 110-140 degrees. The ultrafiltration membrane device using the structure of the micro-scale membrane 4 is obviously different from a typical screen filtering flow. When the filtered sewage flows through the micro-scale membranes 4, flow separation is generated at the convex edges and corners 4-2 of each micro-scale membrane 4 and continues to the front ends of the micro-scale membranes 4, so that a capturing vortex is formed between every two micro-scale membranes 4.
Therefore, the ultrafiltration membrane device constructed by the micro-scale membrane 4 can break through the conventional membrane pore blocking and pore size limitation, reduce the membrane pore and membrane surface deposition blocking on the premise of not reducing the separation performance and water permeability, and reduce the operation cost in the use process.
Best mode for carrying out the invention this example is a further description of the first embodiment, in this example, the micro-scale membrane 4 is made of an elastic material.
Specifically, the material of the micro-scale membrane 4, such as polyvinylidene fluoride (PVDF), gives the micro-scale membrane 4 an elastic force, and when solid particles in sewage impact the surface of the micro-scale membrane 4, the impact force of the water flow and the elastic force of the top fillet 4-1 of the micro-scale membrane 4 cause the solid particles in the water flow to change the original running track and move upwards and forwards. The water then flows into the gaps between the micro-scale membranes 4. Thus avoiding the solid particles from staying on the micro-scale membrane 4 and greatly reducing membrane pollution.
The antifouling and anti-blocking micro-scale ultrafiltration membrane is made of non-hydrophilic materials, and can remove particles, colloids and other substances. The special micro-scale structure of the film ensures that the film body has high strength, strong chemical corrosion resistance and good toughness, breaks through the conventional porous film structure, and therefore, the trouble of film yarn breakage does not exist.
Best mode for carrying out the invention this embodiment is further described as the first embodiment, in this embodiment, symmetrical interception grids 8 are fixed in the membrane frame 1, and the interception grids 8 are respectively located at two ends of the keel outer tube 5.
Specifically, as shown in fig. 1, the interception grid plates 8 are arranged at the top end and the bottom end of the membrane frame 1, so that solid particles in the inlet water can be intercepted on the interception grid plates 8, and the cleaning is convenient.
In summary, the conventional filtration membrane requires a high loading amount because the loading amount and the ultrafiltration performance are in an unstable "equilibrium" state, and thus it is difficult to improve the adsorption filtration effect. The special micro-phosphorus membrane structure of the ultrafiltration membrane realizes the loading capacity of more than 50 percent on the premise of ensuring the ultrafiltration effect. Based on the ultrahigh particle loading capacity and the bidirectional water inlet synchronous filtration performance, the ultrafiltration membrane device can be used for removing methylene blue and the like in an inlet solution.
Meanwhile, the unique micro-scale structure of the ultrafiltration membrane device can avoid the requirement on an expensive pressure container. SUM-1 type membrane stencil assembly is adaptable to capacities greater than 40m3The filter system has a larger effective filter area, can provide higher solid-liquid separation efficiency, can be applied to wider water treatment field, and is suitable for various inflow water qualities, such as industrial wastewater, seawater, surface water and the like.
The ultrafiltration membrane has the advantages that:
1) the special micro-phosphorus membrane design mode of the antifouling and anti-blocking ultrafiltration membrane has the advantages of high flow and low energy consumption, and a hole type membrane filament structure is avoided. The specific phosphor sheet type combination design is easy to control membrane fouling and greatly reduce membrane fouling;
2) in the process of filtering, the substances to be filtered do not change qualitatively, and the effluent quality is stable and does not change periodically;
3) the ultrafiltration membrane can filter in forward and reverse cross flow, thereby greatly improving the filtering efficiency;
4) the antifouling and anti-blocking ultrafiltration membrane adopts a physical filtration mode, so that the problems of impurity shedding and the like do not exist in the filtration process, and the purity of filtrate can be ensured;
5) the ultrafiltration membrane is a uniform membrane body made of advanced high molecular materials, and the problems of conventional membrane yarn tensile fracture and the like can be avoided due to specific flaking;
6) the ultrafiltration membrane component can be optimally allocated and installed according to the requirement of a filtering water body, and is convenient and fast to use;
7) besides conventional membrane cleaning modes such as backwashing and the like, the membrane cleaning modes such as scraping brushes and the like are additionally arranged on the membrane, so that membrane pollution is more easily avoided;
8) the ultrafiltration system can perform liquid-solid separation and filtration at normal temperature and low pressure, and has low energy consumption and low equipment operation cost.
Claims (5)
1. An antifouling and anti-blocking micro-scale ultrafiltration membrane device is characterized by comprising a membrane frame (1) and a plurality of micro-scale membrane bundles (2);
the micro-scale membrane bundles (2) are fixed in the membrane frame (1) in parallel at equal intervals;
the micro-scale diaphragm bundle (2) comprises a diaphragm keel (3) and a plurality of pairs of micro-scale diaphragms (4);
the film keel (3) comprises a keel outer tube (5) and a transmission rod (6), and the transmission rod (6) is sleeved in the keel outer tube (5);
the side wall of the keel outer pipe (5) is provided with a plurality of pairs of slots (7), the pairs of slots (7) are symmetrically arranged by taking the central axis of the keel outer pipe (5) as a symmetry axis, and the slots (7) positioned on the same side are distributed on the same straight line at equal intervals;
a pair of micro-scale diaphragms (4) are correspondingly arranged in the pair of slots (7), and the roots of the micro-scale diaphragms (4) penetrate through the slots (7) to be hinged with the transmission rods (6);
when the transmission rod (6) moves along the axial direction of the transmission rod, the transmission rod (6) can be enabled to displace relative to the keel outer tube (5), the root of the micro-scale diaphragm (4) is pulled, and the micro-scale diaphragm bundle (2) is enabled to be switched between the first posture and the second posture.
2. The antifouling and anti-blocking micro-scale ultrafiltration membrane device according to claim 1,
the first posture is as follows:
the included angle between the micro-scale membranes (4) and the membrane keel (3) is 40-50 degrees, the angle between two micro-scale membranes (4) in the paired micro-scale membranes is 110-160 degrees, and a plurality of micro-scale membrane bundles (2) form a wave-shaped surface;
the second posture is as follows:
the included angle between the micro-scale film (4) and the film keel (3) is 90 degrees, the angle between two micro-scale films (4) in the paired micro-scale films is 180 degrees, and the plurality of micro-scale film bundles (2) form a plane.
3. The antifouling and anti-blocking micro-scale ultrafiltration membrane device according to claim 1, wherein the head of the micro-scale membrane (4) is a circular arc-shaped fillet (4-1), the upper surface and the lower surface of the micro-scale membrane (4) are provided with convex edges (4-2) with herringbone cross sections, and the angles of the convex edges (4-2) are obtuse angles.
4. An antifouling and anti-blocking micro-scale ultrafiltration membrane device according to claim 3, wherein the micro-scale membrane sheet (4) is made of an elastic material.
5. An antifouling and anti-blocking micro-scale ultrafiltration membrane device according to claim 1, wherein symmetrical interception grid plates (8) are fixed in the membrane frame (1), and the interception grid plates (8) are respectively positioned at two ends of the keel outer tube (5).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104010716A (en) * | 2012-01-05 | 2014-08-27 | 住友重机械工业株式会社 | Membrane separation method and membrane separation apparatus |
| CN106422791A (en) * | 2016-08-31 | 2017-02-22 | 成都美富特膜科技有限公司 | Membrane filtration unit and membrane assembly |
| CN206168248U (en) * | 2016-10-18 | 2017-05-17 | 安徽智泓净化科技股份有限公司 | Easily assemble RO reverse osmosis membrane |
| JP1585736S (en) * | 2016-12-02 | 2017-09-11 |
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2020
- 2020-01-17 CN CN202010053268.7A patent/CN111229042B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104010716A (en) * | 2012-01-05 | 2014-08-27 | 住友重机械工业株式会社 | Membrane separation method and membrane separation apparatus |
| CN106422791A (en) * | 2016-08-31 | 2017-02-22 | 成都美富特膜科技有限公司 | Membrane filtration unit and membrane assembly |
| CN206168248U (en) * | 2016-10-18 | 2017-05-17 | 安徽智泓净化科技股份有限公司 | Easily assemble RO reverse osmosis membrane |
| JP1585736S (en) * | 2016-12-02 | 2017-09-11 |
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