CN107413198B - Filtering membrane assembly and filter comprising same - Google Patents
Filtering membrane assembly and filter comprising same Download PDFInfo
- Publication number
- CN107413198B CN107413198B CN201710404465.7A CN201710404465A CN107413198B CN 107413198 B CN107413198 B CN 107413198B CN 201710404465 A CN201710404465 A CN 201710404465A CN 107413198 B CN107413198 B CN 107413198B
- Authority
- CN
- China
- Prior art keywords
- membrane
- grid
- filtering
- liquid
- porous metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- B01D63/08—Flat membrane modules
- B01D63/082—Flat membrane modules comprising a stack of flat membranes
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a filtering membrane component, which comprises a membrane element and a turbulence grid structure, wherein the membrane element is a hollow structure which is formed by a porous metal membrane and is provided with an opening at one side, and the turbulence grid structure covers the outside of the membrane element. Besides, a filter composed of the filtering membrane assembly is also disclosed. The porous metal membrane has lower filtration resistance and larger filtration flux under the same filtration precision with other membranes; when the liquid flows through the turbulent grid structure, strong vortex can be generated, the continuous and effective scouring can be formed on the surface of the membrane, and pollutants attached to the surface of the membrane can be stripped. Meanwhile, the porous metal film can vibrate under the disturbance of the filtered liquid, the thickness of the attached pollutants can be reduced, and the self-cleaning function is realized, so that the filtering effect of the filtering film component is greatly improved, and the filtering cost of the filter is reduced.
Description
Technical Field
The invention relates to the technical field of liquid filtration, in particular to a filtering membrane component and a filter formed by the same.
Background
Most of the filtering membrane components in the prior art are of flat plate structures or tubular structures, and due to the structural limitation of the filtering membrane components in the prior art, the filtering membrane components have the defects of high operating pressure, low yield, large required fluid channel, high scouring flow and high energy consumption of a pump when in use, so that the filtering effect of the filtering membrane components in the use process is not ideal, and the filtering effect of a filter formed by the filtering membrane components is not good.
Disclosure of Invention
The invention mainly aims to provide a filtering membrane component to solve the technical problem that the filtering effect of the filtering membrane component in the prior art is not ideal.
The invention relates to a filtering membrane component, which comprises a membrane element and a turbulent flow grid structure, wherein the membrane element is a hollow structure formed by a porous metal membrane and provided with an opening at one side, and the turbulent flow grid structure covers the outer part of the membrane element. The porous metal membrane has lower filtration resistance and larger filtration flux under the same filtration precision as other membranes; when liquid passes through the membrane element, due to the special mesh structure design of the turbulence grid structure, strong turbulence vortexes can be generated when the liquid flows through the turbulence grid, so that the membrane surface can be continuously and effectively washed, and pollutants attached to the membrane surface can be stripped. Meanwhile, the porous metal film can vibrate under the disturbance of the filtered liquid, the thickness of attached pollutants can be reduced, and the self-cleaning function is achieved. Thereby achieving an ideal filtering effect. The opening direction of the meshes of the turbulence grid structure is vertical to the flow direction of the liquid on the surface of the membrane element.
Further, the membrane device comprises at least two membrane elements, wherein the membrane elements are in a hollow plate-shaped structure, and adjacent membrane elements are connected into a whole through a turbulence grid structure. The flow channel of the hollow plate-shaped structure is smaller, the area of the flow channel is reduced, and the required scouring flow is correspondingly reduced. Therefore, the device can operate at a lower membrane surface scouring speed, reduce the flow output of the pump and effectively reduce the operating cost. The turbulent flow grid structure is arranged between the adjacent membrane elements, so that when liquid passes through the hollow plate-shaped structure, the flow passage area between the membrane elements is reduced due to the special design of the turbulent flow grid structure between the membrane elements, and the liquid scouring flow is further reduced.
Furthermore, the front and back surfaces of the hollow plate-shaped structure are porous metal membranes, one side surface is an opening, and the other side surface and the upper and lower surfaces are closed surfaces. Therefore, liquid can only enter the membrane element through the porous metal membranes on the front surface and the rear surface and is filtered, and the filtered liquid flows out from one side surface, so that the liquid filtering efficiency is improved.
Further, the turbulence grid structure comprises a grid arranged on the outer side of the porous metal membrane and sealing surfaces arranged on two sides of the grid. Under the effect of pressure from this, directly entering into the film element inside through the liquid that graticule mesh one end got into between the film element after the porous metal membrane filters, the liquid that does not pass the porous metal membrane is discharged from the torrent graticule mesh structure other end, has improved liquid filtration efficiency.
Further, the grid is a honeycomb grid. The graticule mesh can realize that above-mentioned runner area reduces under this structural design, erodees the flow and reduces, peels off the pollutant that adheres to on membrane surface, reduces the adnexed thickness of pollutant, possesses effects such as self-cleaning function.
Furthermore, a flow grid structure is arranged in the hollow plate-shaped structure. Therefore, after filtering for a period of time, backwashing needs to be carried out on the inside of the membrane element, the backwashing liquid introduced in the backwashing process can also generate turbulent eddies to penetrate through the porous metal membrane from inside to outside under the action of the flow grid structure, the surface of the inner membrane of the hollow plate-shaped structure can be continuously scoured, and effective cleaning of the hollow plate-shaped structure is realized. The opening direction of the meshes of the flow grid structure is vertical to the flow direction of the liquid on the surface of the membrane element.
Further, the porous metal film is a sheet formed of a solid solution alloy, a metal simple substance having a face-centered cubic structure, or a metal porous material in which a metal simple substance having a body-centered cubic structure is a matrix phase. The porous metal membrane has characteristics of lower filtration resistance and larger filtration flux under the same filtration precision as other membranes.
The invention also provides a filter, which comprises a shell and a filtering membrane component arranged in the shell, wherein the shell comprises a stock solution cavity and a purified solution cavity connected with the stock solution cavity, the stock solution cavity is provided with a stock solution inlet and a stock solution outlet, the purified solution cavity is provided with a purified solution inlet and a purified solution outlet, the filtering membrane component is the filtering membrane component, an opening at one side of a hollow plate structure in the filtering membrane component is communicated with the purified solution inlet, and the purified solution cavity is also provided with a backwashing port. According to the filter, under the structure, liquid to be filtered enters the filter from the stock solution inlet, the liquid passes through the membrane filtration assembly, and the porous metal membrane has lower filtration resistance and larger filtration flux under the same filtration precision as other membranes; when liquid passes through the membrane element, due to the special mesh structure design of the turbulence grid structure, strong turbulence vortexes can be generated when the liquid flows through the turbulence grid, so that the membrane surface can be continuously and effectively washed, and pollutants attached to the membrane surface can be stripped. Meanwhile, the porous metal film can vibrate under the disturbance of the filtered liquid, the thickness of the attached pollutants can be reduced, and the self-cleaning function is achieved. Therefore, the ideal filtering effect can be achieved, so that the filtering efficiency of the filter is improved, and the filtering effect of the filter is improved. After long-time filtration, pollutants can still adhere to the membrane surface of the membrane element to influence the filtration flux, so backwashing is needed. And backwashing is to press cleaning liquid into the clear liquid cavity, and the cleaning liquid penetrates through the porous metal membrane from the flow grid structure to strip off pollutants on the surface of the metal membrane. The inside of the membrane element can be back-washed and cleaned by introducing cleaning liquid through the back-washing port.
Furthermore, the stock solution cavity and the liquid purification cavity are arranged in a left-right structure, the stock solution inlet is formed in the bottom of the stock solution cavity, the stock solution outlet is formed in the top of the stock solution cavity, the liquid purification inlet is formed in the joint of the stock solution cavity and the liquid purification cavity, the liquid purification outlet is formed in the top of the liquid purification cavity, and the backwashing port is formed in the bottom of the liquid purification cavity. The structure enables the filtering effect and the cleaning effect of the invention to be optimal.
Further, an inlet baffle is arranged at the stock solution inlet, and an outlet baffle is arranged at the stock solution outlet. Therefore, the membrane assembly can be prevented from being directly impacted, and the effect of uniformly distributing liquid can be achieved.
Therefore, compared with the existing filtering membrane component, the porous metal membrane has lower filtering resistance and larger filtering flux under the same filtering precision as other membranes when in use; when liquid passes through the membrane element, due to the special mesh structure design of the turbulence grid structure, strong turbulence vortexes can be generated when the liquid flows through the turbulence grid, so that the membrane surface can be continuously and effectively washed, and pollutants attached to the membrane surface can be stripped. Meanwhile, the porous metal film can vibrate under the disturbance of the filtered liquid, the thickness of the attached pollutants can be reduced, and the self-cleaning function is achieved. Thereby achieving an ideal filtering effect.
The invention is further described with reference to the following figures and detailed description. Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to assist in understanding the invention, and are included to explain the principles of the invention and not to limit the invention unduly. In the drawings:
fig. 1 is a front view of a membrane element according to the present invention.
Fig. 2 isbase:Sub>A schematic cross-sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1.
Fig. 3 is a schematic cross-sectional view taken along line B-B in fig. 1.
Fig. 4 is a front view of a filtration membrane module of the present invention.
Fig. 5 is a schematic cross-sectional view taken along line C-C of fig. 4.
Fig. 6 is a schematic cross-sectional view taken along line D-D of fig. 4.
FIG. 7 is a front view of a filter membrane module with a flange structure according to the present invention.
FIG. 8 is a side view of a filter membrane module with a flange configuration according to the present invention.
FIG. 9 is a top view of a filter membrane module with a flange configuration according to the present invention.
Fig. 10 is a schematic view of the filter structure of the present invention.
Fig. 11 is an enlarged structural diagram of I in fig. 10.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings. Those skilled in the art will be able to implement the invention based on these teachings. Before the present invention is described in detail with reference to the accompanying drawings, it is to be noted that:
(1) The technical solutions and features provided in the present invention in the respective sections including the following description may be combined with each other without conflict.
(2) The embodiments of the invention referred to in the following description are generally only examples of a part of the invention, and not all embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.
(3) Description of terms in the present invention. The terms "first," "second," and the like in the description and in the claims and the associated sections are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. The term "filtration accuracy" refers to the filtration efficiency in micron-sized particle counts. The term "membrane flux" refers to an important process operating parameter of a membrane separation process, and refers to the amount of fluid per unit of membrane area that passes through the membrane per unit time. The term "effective pore membrane layer thickness" refers to the membrane layer that determines the separation accuracy. The porous metal film is mainly divided into a substrate and an effective film layer, the aperture of the substrate is large, and the aperture of the effective film layer is small to determine the separation precision. The term "tangential flow to the membrane face" refers to liquid flow that is tangential to the surface of the membrane element.
The filtering membrane component comprises a membrane element, wherein the membrane element is a hollow structure which is formed by a porous metal membrane and is provided with an opening at one side, and the membrane element further comprises a turbulent flow grid structure covering the outside of the membrane element.
The membrane comprises at least two membrane elements, wherein the membrane elements are of hollow plate-shaped structures, and adjacent membrane elements are connected into a whole through a turbulence grid structure.
The front and back surfaces of the hollow plate-shaped structure are porous metal membranes 11, one side surface is an opening, and the other side surface and the upper and lower surfaces are closed surfaces 12.
The turbulent flow grid structure comprises a grid arranged on the outer side of the porous metal membrane 11 and sealing surfaces 21 arranged on two sides of the grid.
The grid is a honeycomb grid.
And a flow grid structure is arranged in the hollow plate-shaped structure.
The porous metal film is a sheet formed by solid solution alloy, a metal simple substance with a face-centered cubic structure or a metal porous material with a body-centered cubic structure as a matrix phase.
The filter comprises a shell and a filtering membrane assembly arranged in the shell, wherein the shell comprises a stock solution cavity 31 and a purified solution cavity 32 connected with the stock solution cavity 31, the stock solution cavity 31 is provided with a stock solution inlet 311 and a stock solution outlet 312, the purified solution cavity 32 is provided with a purified solution inlet 321 and a purified solution outlet 322, the filtering membrane assembly is the filtering membrane assembly, an opening on one side of a hollow structure of the filtering membrane assembly is communicated with the purified solution inlet 321, and the purified solution cavity 32 is further provided with a backwashing port 323.
The stoste cavity 31 and the liquid purification cavity 32 are arranged in a left-right structure, the stoste inlet 311 is arranged at the bottom of the stoste cavity 31, the stoste outlet 312 is arranged at the top of the stoste cavity 31, the liquid purification inlet 321 is positioned at the joint of the stoste cavity 31 and the liquid purification cavity 32, the liquid purification outlet 322 is arranged at the top of the liquid purification cavity 32, and the backwashing port 323 is arranged at the bottom of the liquid purification cavity 32.
An inlet baffle 3110 is arranged at the raw liquid inlet 311, and an outlet baffle 3120 is arranged at the raw liquid outlet 312.
The number of membrane elements in the filtration membrane module in this embodiment is two, and the actual number can be determined according to the specific filtration requirement of the user. The membrane element in the filtration membrane module in the present embodiment is a plate-type membrane element, and may be designed to have a cylindrical structure according to actual use requirements.
Fig. 1 is a front view of a membrane element according to the present invention. Fig. 2 isbase:Sub>A schematic cross-sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1. Fig. 3 is a schematic cross-sectional view taken along line B-B in fig. 1. As shown in fig. 1-3, the membrane element is a square plate-shaped structure, the membrane module includes two porous metal membranes arranged in parallel, the upper and lower surfaces and one side surfaces of the two porous metal membranes are sealing surfaces 12, the sealing surfaces 12 may be sealing glue surfaces filled for connecting the two porous metal membranes, or welding surfaces formed by welding the upper and lower ends and one side of the two porous metal membranes, and the other side of the membrane module is open. Be equipped with first graticule mesh 13 between two porous metal diaphragms, first graticule mesh 13 is cellular graticule mesh, and the graticule mesh that stainless steel material or aluminium system material constitute can be selected to cellular graticule mesh, and first graticule mesh 13 can set up between two porous metal diaphragms through peripheral round viscose or welding form.
Fig. 4 is a front view of a filtration membrane module of the present invention. Fig. 5 is a schematic cross-sectional view taken along line C-C of fig. 4. Fig. 6 is a schematic cross-sectional view taken along line D-D of fig. 4. As shown in fig. 4-6, the whole filtering membrane assembly is a square plate-shaped structure, the filtering membrane assembly includes at least two membrane elements as described above, the membrane elements are arranged in parallel, a second grid 22 is arranged between the adjacent membrane elements, the second grid 22 is also a honeycomb grid, the honeycomb grid can be made of stainless steel or aluminum, and the second grid 22 can be arranged between the porous metal membranes of the two adjacent membrane elements in a peripheral circle of viscose or welding manner. Sealing surfaces 21 are arranged on the left side and the right side of the second grid 22, the sealing surfaces 21 can be filled sealing rubber surfaces used for connecting porous metal membranes of adjacent membrane elements, welding surfaces formed by welding the two sides of the porous metal membranes of the adjacent membrane elements can also be used, and the upper side and the lower side of the second grid 22 are both opening sides.
FIG. 7 is a front view of a filter membrane module with a flange structure according to the present invention. FIG. 8 is a side view of a filtration membrane module with a flange configuration of the present invention. FIG. 9 is a top view of a filter membrane module with a flange configuration according to the present invention. As shown in fig. 7 to 9, the filtering membrane module with the flange structure according to the present invention is used for mounting the filtering membrane module, the first flange 41 is welded around the port on the opening side of the filtering membrane module, the first flange 41 is provided with a plurality of flange holes 410, and the second grids 22 are additionally provided on the outer porous metal membranes of the first membrane element and the last membrane element of the filtering membrane module, so that the membrane pollution problem of the filtering membrane module can be further reduced, and the sealing surfaces 21 also need to be provided on both sides of the second grids 22.
FIG. 10 is a schematic view of the filter of the present invention. Fig. 11 is an enlarged structural diagram of I in fig. 10. As shown in fig. 10 to 11, the filter of the present invention includes a housing and a filtering membrane module disposed in the housing, the housing includes a stock solution cavity 31 and a clean solution cavity 32, the stock solution cavity 31 and the clean solution cavity 32 are disposed in a left-right structure, the stock solution cavity 31 is provided with a stock solution inlet 311 and a stock solution outlet 312, the clean solution cavity 32 is provided with a clean solution inlet 321 and a clean solution outlet 322, the filtering membrane module is the above filtering membrane module, an opening on one side of a hollow plate structure in the filtering membrane module is communicated with the clean solution inlet 321, and the clean solution cavity 32 is further provided with a backwashing opening 323. The stoste inlet 311 is arranged at the bottom of the stoste cavity 31, the stoste outlet 312 is arranged at the top of the stoste cavity 31, the clear liquid inlet 321 is positioned at the joint of the stoste cavity 31 and the clear liquid cavity 32, the clear liquid outlet 322 is arranged at the top of the clear liquid cavity 32, and the backwashing port 323 is arranged at the bottom of the clear liquid cavity 32. The port a week that communicates one side with clean liquid chamber 31 on the clean liquid chamber 32 links to each other with second flange 43, the port a week that communicates one side with clean liquid chamber 32 on the clean liquid chamber 31 links to each other with third flange 43, and net pass through flange joint between clean liquid chamber 31, filtration membrane module, the clean liquid chamber 32. An inlet baffle 3110 is arranged at the raw liquid inlet 311, and an outlet baffle 3120 is arranged at the raw liquid outlet 312. In this embodiment, the volume of the raw liquid chamber 31 is larger than the volume of the clean liquid chamber 32, the raw liquid chamber 31 is a canned body, and the clean liquid chamber 32 is a tubular body.
As shown in fig. 10, the arrow indicates the liquid flow direction, the filter of the present invention closes the backwash opening 323 first under normal operation, when filtering liquid, the liquid to be filtered first enters the raw liquid chamber 31 from the raw liquid inlet 311, the liquid is buffered by the inlet baffle 3110 when flowing in, then the liquid to be filtered enters the region of the filtering membrane assembly, the liquid to be filtered first flows into the second grid 22 under pressure, strong vortex is generated in the second grid 22 to form turbulent flow, and then the liquid is filtered by the porous metal membrane 11 and enters the inside of the membrane element to form clear liquid, i.e. clean liquid. The obtained clear liquid then enters the clear liquid cavity 32 through the clear liquid inlet 321, and the clear liquid in the clear liquid cavity 32 is discharged after passing through the clear liquid outlet 322. After the membrane filter works for a period of time, pollutants are still attached to the surface of the membrane element to influence the filtration flux, and backwashing is needed. The backwashing is to press a cleaning liquid through the backwashing port 323, and the cleaning liquid passes through the porous metal membrane from the flow-through first mesh 13 to strip off contaminants on the surface of the porous metal membrane.
In the present embodiment, the porous metal film is a thin sheet made of a solid solution alloy, a metal simple substance having a face-centered cubic structure, or a metal porous material having a body-centered cubic structure as a matrix phase, and particularly, the porous metal film made of an Al-based intermetallic compound material may be selected, and has acid and alkali resistance, oxidation resistance, and sulfidation resistance. The thickness of the porous metal film is 5-1500 mu m, the average pore diameter is 0.05-100 mu m, and the porosity is 15-70%. The porous metal film is in an asymmetric structure, the thickness of an effective pore film layer can be 100 mu m, and the filtering precision can reach 0.1 mu m. The porous metal membrane is formed according to the Cokendall effect, the formed hole is smooth, and the tortuosity factor is small, so that the porous metal membrane has the characteristics of lower filtering resistance, larger filtering flux and the like under the same filtering precision as other membranes.
The first grid mesh 13 and the second grid mesh 14 are both porous net structures, the opening directions of the net holes on the first grid mesh 13 and the second grid mesh 14 are both perpendicular to the flow direction of the liquid on the surface of the membrane element, namely perpendicular to the tangential flow direction of the membrane surface, and specifically, the liquid flow direction includes the direction of the cleaning liquid entering the membrane element and the direction of the stock solution entering the stock solution cavity. The aperture of the meshes in the first grid 13 and the second grid 14 is 8-25mm, and the wall thickness is 3-8mm.
The invention implements a plurality of groups of tests, wherein the first group adopts a porous metal film with the thickness of 5 mu m, the average pore diameter of 0.05 mu m and the porosity of 15 percent, and adopts a first grid 13 and a second grid 14 with the pore diameter of 8mm and the wall thickness of 3 mm; the second group adopts a porous metal film with the thickness of 200 mu m, the average pore diameter of 20 mu m and the porosity of 35 percent, and adopts a first grid mesh 13 and a second grid mesh 14 with the pore diameter of 15mm and the wall thickness of 5 mm; the third group uses a porous metal film with a thickness of 1500 μm, an average pore size of 100 μm and a porosity of 70%, and uses a first grid 13 and a second grid 14 with a pore size of 25mm and a wall thickness of 8mm.
The applicant obtains through the above comparative experiments that, in the prior art, the flat plate type filtering membrane component and the tubular type filtering membrane component made of ceramic or metal materials are adopted, the operating pressure is generally 0.1-0.6MPa, the membrane flux is only 50-200L/square meter · kgf · h, and the membrane surface tangential flow scouring of 3-5m/s is needed, so that the membrane transitional pollution can be avoided, the membrane filtering effect is poor, the energy consumption is large, and the production cost is high. When the invention works, compared with other inorganic membranes, the membrane flux can reach 500-2000L/((square meter. Kgf. H)), the operating pressure is less than 0.1Mpa, the scouring speed of tangential flow of the membrane surface is less than 3m/s, and backwashing is only needed under the pressure state of 0.01-0.05MPa, so that pollutants attached to the membrane surface can be quickly stripped, the thickness of attached pollutants can be reduced, and the invention has a self-cleaning function. The membrane flux can be quickly recovered, so that an ideal filtering effect can be achieved, and the production efficiency is improved.
In addition, the raw liquid chamber 31 of the filter may be connected to a compressed gas supply device, and compressed air of about 0.05MPa may be periodically supplied to the filtered liquid, for example, compressed air of 20s,0.05mpa every ten minutes. The compressed air forms bubbles in the fluid, the bubbles can be broken after entering the turbulent flow grid structure, and strong impact is generated on the surface of the membrane during breaking, so that pollutants are separated from the porous metal membrane, and the aim of cleaning the membrane element is fulfilled.
Claims (6)
1. The filtering membrane component is characterized by comprising at least two membrane elements, wherein each membrane element is a hollow plate-shaped structure which is formed by a porous metal membrane and is provided with an opening at one side, a flow grid structure is arranged in each hollow plate-shaped structure, and the adjacent membrane elements are connected into a whole through a turbulence grid structure; the flow-through mesh structure comprises a first mesh (13);
the membrane also comprises a turbulence grid structure covering the outside of the membrane element; the turbulent grid structure comprises a second grid (22) arranged on the outer side of the porous metal membrane (11) and sealing surfaces (21) arranged on two sides of the grid;
the aperture of the meshes in the first grid (13) and the second grid (22) is 8-25mm, and the wall thickness is 3-8mm;
the opening directions of the meshes on the first grid (13) and the second grid (22) are both vertical to the flow direction of the liquid on the surface of the membrane element;
the second grid (22) is a honeycomb grid.
2. A filtration membrane module according to claim 1, characterized in that the hollow plate-like structure has a porous metal membrane sheet (11) on both the front and rear sides, an open side, and closed sides (12) on both the other side and the upper and lower sides.
3. The filtration membrane module of claim 1, wherein the porous metal membrane is a sheet composed of a solid solution alloy, a face centered cubic structured elemental metal, or a body centered cubic structured elemental metal as a matrix phase metallic porous material.
4. The filter comprises a shell and a filtering membrane assembly arranged in the shell, wherein the shell comprises a stock solution cavity (31) and a purified liquid cavity (32) connected with the stock solution cavity (31), the stock solution cavity (31) is provided with a stock solution inlet (311) and a stock solution outlet (312), and the purified liquid cavity (32) is provided with a purified liquid inlet (321) and a purified liquid outlet (322), and is characterized in that the filtering membrane assembly is the filtering membrane assembly as claimed in any one of claims 1 to 3, an opening at one side of a hollow structure of the filtering membrane assembly is communicated with the purified liquid inlet (321), and the purified liquid cavity (32) is also provided with a backwashing port (323).
5. The filter of claim 4, wherein the raw liquid chamber (31) and the clean liquid chamber (32) are arranged in a left-right structure, the raw liquid inlet (311) is arranged at the bottom of the raw liquid chamber (31), the raw liquid outlet (312) is arranged at the top of the raw liquid chamber (31), the clean liquid inlet (321) is arranged at the joint of the raw liquid chamber (31) and the clean liquid chamber (32), the clean liquid outlet (322) is arranged at the top of the clean liquid chamber (32), and the backwashing port (323) is arranged at the bottom of the clean liquid chamber (32).
6. A filter according to claim 4, characterised in that an inlet baffle (3110) is provided at the dope inlet (311) and an outlet baffle (3120) is provided at the dope outlet (312).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710404465.7A CN107413198B (en) | 2017-06-01 | 2017-06-01 | Filtering membrane assembly and filter comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710404465.7A CN107413198B (en) | 2017-06-01 | 2017-06-01 | Filtering membrane assembly and filter comprising same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107413198A CN107413198A (en) | 2017-12-01 |
| CN107413198B true CN107413198B (en) | 2023-03-31 |
Family
ID=60428433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710404465.7A Active CN107413198B (en) | 2017-06-01 | 2017-06-01 | Filtering membrane assembly and filter comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107413198B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201921637U (en) * | 2010-11-15 | 2011-08-10 | 河北美邦工程科技有限公司 | Liquid leakage prevention jacket used with ceramic membrane |
| CN102423638A (en) * | 2011-08-24 | 2012-04-25 | 轻工业环境保护研究所 | Flat plate turbulence type dynamic membrane separation device and membrane separation method thereof |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010029835A (en) * | 2008-07-31 | 2010-02-12 | Toray Ind Inc | Membrane separation module |
| CN101596407B (en) * | 2009-07-13 | 2011-04-20 | 张翼鹏 | Shunt-type filtering device with back wash function |
| CN201613112U (en) * | 2010-01-12 | 2010-10-27 | 苏州工业园区意诺克环境技术有限公司 | Novel flat plate type membrane component |
| CN201906567U (en) * | 2010-12-15 | 2011-07-27 | 厦门征成膜清洗科技有限公司 | Rolled membrane screen structure |
| CN202460486U (en) * | 2012-02-02 | 2012-10-03 | 嘉戎科技(厦门)有限公司 | Micro-tubular membrane component |
| DE102013114583A1 (en) * | 2013-12-19 | 2015-06-25 | Napt - New Advanced Process Technology Ag | Production method of a ceramic element for a fluid separation device |
| CN104841282B (en) * | 2015-04-30 | 2017-07-14 | 嘉兴里仁环保科技有限公司 | A kind of flat board membrane filtration module |
| CN105129919B (en) * | 2015-09-16 | 2018-01-12 | 湖州恒鑫过滤科技有限公司 | A kind of cross-flow type membrane filtration equipment |
| CN205055824U (en) * | 2015-09-18 | 2016-03-02 | 成都易态科技有限公司 | Liquid filter assembly |
| CN106731858B (en) * | 2017-01-12 | 2023-03-31 | 成都易态科技有限公司 | Plate type membrane assembly |
| CN206996306U (en) * | 2017-06-01 | 2018-02-13 | 成都易态科技有限公司 | The filter of filtering film component and its composition |
-
2017
- 2017-06-01 CN CN201710404465.7A patent/CN107413198B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201921637U (en) * | 2010-11-15 | 2011-08-10 | 河北美邦工程科技有限公司 | Liquid leakage prevention jacket used with ceramic membrane |
| CN102423638A (en) * | 2011-08-24 | 2012-04-25 | 轻工业环境保护研究所 | Flat plate turbulence type dynamic membrane separation device and membrane separation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107413198A (en) | 2017-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111229054A (en) | Compound filter element group spare and water purification system | |
| JP2000051670A (en) | Hollow fiber membrane module | |
| CN205055824U (en) | Liquid filter assembly | |
| CN201208526Y (en) | Catalyst recovery filter | |
| CN209934478U (en) | Hollow fiber membrane filter element | |
| CN107413198B (en) | Filtering membrane assembly and filter comprising same | |
| CN205019968U (en) | Liquid filtration membrane group spare | |
| CN2882771Y (en) | Pipeline type ultrafiltration water purifier | |
| CN218530012U (en) | Liquid purification system | |
| CN206996306U (en) | The filter of filtering film component and its composition | |
| CN209872555U (en) | Composite filter element | |
| CN209872554U (en) | Combined type filter element subassembly | |
| CN210710985U (en) | Composite filter element with good filtering effect | |
| CN212450898U (en) | Assembled composite filter element and water purifier | |
| CN215946932U (en) | Water purification filter core with waste water discharge function | |
| CN2728598Y (en) | Assembly filter cartridge | |
| CN212854938U (en) | Water purification filter element subassembly | |
| CN212425694U (en) | Bionic river sediment filter element | |
| CN211885678U (en) | Spiral precipitation filter device | |
| CN215798806U (en) | Filter element and water purifier | |
| CN210543675U (en) | Multi-net filter | |
| CN220520319U (en) | Multifunctional composite RO membrane element | |
| CN216005407U (en) | Water purifying device using water diversion sealing ring and central support | |
| CN218740365U (en) | Novel suction filter structure | |
| CN211486677U (en) | Filter plate and filter structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |