CN107080995A - Self-cleaning irrigation filtration core - Google Patents
Self-cleaning irrigation filtration core Download PDFInfo
- Publication number
- CN107080995A CN107080995A CN201710410632.9A CN201710410632A CN107080995A CN 107080995 A CN107080995 A CN 107080995A CN 201710410632 A CN201710410632 A CN 201710410632A CN 107080995 A CN107080995 A CN 107080995A
- Authority
- CN
- China
- Prior art keywords
- fixing device
- filter screen
- screen fixing
- filtration core
- outside
- 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.)
- Granted
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 53
- 238000004140 cleaning Methods 0.000 title claims abstract description 23
- 230000002262 irrigation Effects 0.000 title claims abstract description 17
- 238000003973 irrigation Methods 0.000 title claims abstract description 17
- 239000010865 sewage Substances 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000002086 nanomaterial Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims 1
- 239000004744 fabric Substances 0.000 abstract description 13
- 239000004575 stone Substances 0.000 abstract description 2
- 239000004695 Polyether sulfone Substances 0.000 description 5
- 229920006393 polyether sulfone Polymers 0.000 description 5
- 239000012528 membrane Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003621 irrigation water Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920012266 Poly(ether sulfone) PES Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/15—Supported filter elements arranged for inward flow filtration
- B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
- B01D29/213—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets having a concertina shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/94—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/04—Supports for the filtering elements
- B01D2201/0415—Details of supporting structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/60—Shape of non-cylindrical filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/12—Special parameters characterising the filtering material
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a kind of self-cleaning irrigation filtration core, including inner side filter screen fixing device and outside filter screen fixing device, screen pack is folded between inner side filter screen fixing device and outside filter screen fixing device, the screen pack head and the tail being folded with are fixedly connected.Inner side filter screen fixing device includes the first inner side filter screen fixing device and the second inner side filter screen fixing device positioned at filtration core bottom positioned at filtration core top, and outside filter screen fixing device is included positioned at the first outside filter screen fixing device on filtration core top and positioned at the second outside of filtration core bottom filter screen fixing device.The cylindrical horizontal profile circle of screen cloth is changed to the shape with multiple folding, discharge area, the conveyance capacity of the filter of raising is added；It is changed to by the cylindrical horizontal profile circle of screen cloth on the basis of the shape with multiple folding, sewage sump is added at folding, de-entrainment filter dirt is that automatic clear mistake lays the first stone.
Description
Technical field
The invention belongs to filter plant technical field, and in particular to a kind of self-cleaning irrigation filtration core.
Background technology
Screen cloth water filter is a kind of simple and effective filter plant, and cost is also relatively inexpensive, at home and abroad irrigation system
In it is most widely used.Its filter medium is nylon screen or stainless steel mesh, be mainly used in powder in filtering irrigation water,
The dirts such as husky and incrustation scale, it can also be used to irrigation water of the filtering containing a small amount of organic dirt, but filtered when content of organics is slightly higher
Poor effect, especially when pressure is larger, substantial amounts of organic dirt can squeeze through screen cloth and enter pipeline, cause system with pouring water
The blocking of device.
Existing filter uses dirt after screen cloth, filter water to stick on screen cloth, and one is influence conveyance capacity, is caused
The loss of flood peak gradually increases；Two need to take filter apart when being and rinsing, take out screen cloth, so have ceased the filter course of work, make
Irrigate and interrupt；Three be oil and microorganism in water, and adhering to screen cloth, easy cleaning thoroughly, not have impact on filter effect and cross water energy
Power.
Patent name is：Self-cleaning screen mesh, Authorization Notice No. is：Although CN2544838 utility model patent discloses
Self-cleaning screen mesh, but it belongs to material screening technical field.
The content of the invention
The technical problem to be solved in the present invention is to overcome in place of above-mentioned the deficiencies in the prior art that there is provided a kind of filling of self-cleaning
Irrigate and use filtration core.
The purpose of the present invention is realized in the following manner：
Self-cleaning irrigation filtration core, including inner side filter screen fixing device and outside filter screen fixing device, in inner side filtering
Screen pack is folded between net fixing device and outside filter screen fixing device, the screen pack head and the tail being folded with are fixed to be connected
Connect.
The inner side filter screen fixing device includes the first inner side filter screen fixing device and position positioned at filtration core top
The second inner side filter screen fixing device in filtration core bottom, outside filter screen fixing device includes the positioned at filtration core top
One outside filter screen fixing device and positioned at the second outside of filtration core bottom filter screen fixing device.
Some first are provided between first inner side filter screen fixing device and the second inner side filter screen fixing device
Sewage sump, is provided with some second dirt collections between the first outside filter screen fixing device and the second outside filter screen fixing device
Groove, the quantity of the first sewage sump is equal with the quantity of the second sewage sump.
Inner side mistake is additionally provided between first inner side filter screen fixing device and the second inner side filter screen fixing device
Filter screen strengthens fixing device.
Outside mistake is additionally provided between first outside filter screen fixing device and the second outside filter screen fixing device
Filter screen strengthens fixing device.
First sewage sump slopes inwardly from top to bottom, and the second sewage sump is vertically downward.
The screen pack is prepared from by the dirty nano material of not viscous oil.
First inner side filter screen fixing device, the second inner side filter screen fixing device, the first outside screen pack are fixed
Device and the second outside filter screen fixing device are annulus, and the diameter of the first inner side filter screen fixing device is more than in second
The diameter of side filter screen fixing device, the diameter of the first inner side filter screen fixing device is less than the second outside filter screen fixing device
Diameter, the diameter of the first outside filter screen fixing device is equal to the diameter of the second outside filter screen fixing device.
First sewage sump and the second sewage sump are six.
First sewage sump and the angle α of horizontal direction are 75-82 °.
Relative to prior art, beneficial effects of the present invention are：
1st, the cylindrical horizontal profile circle of screen cloth is changed to the shape with multiple folding, adds discharge area, improved
Filter conveyance capacity；
2nd, it is changed on the basis of the shape with multiple folding, increases at folding by the cylindrical horizontal profile circle of screen cloth
Sewage sump, de-entrainment filter dirt is that automatic clear mistake lays the first stone；
3rd, the circular vertical direction of screen cloth is changed to intilted shape, so under flow action, the dirt that sewage sump is collected
Thing is moved downward automatically, and dirt is focused on into bottom again；
4th, screen cloth is replaced by pollution-resistant membrane using the nano material of modified not viscous oil thing for requiring high water quality by screen cloth, real
Existing network（Or film）Self-cleaning.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the front view of the present invention.
Fig. 3 is the top view of the present invention.
Fig. 4 is the profile in A-A directions in Fig. 2.
Fig. 5 is the structural representation of the first sewage sump.
Fig. 6 is the first sewage sump, the second sewage sump and the structural representation positioned at screen pack between the two.
Wherein, 1 is the first inner side filter screen fixing device；2 be the first outside filter screen fixing device；3 be the second inner side
Filter screen fixing device；4 be the second outside filter screen fixing device；5 be the first sewage sump；6 be the second sewage sump；7 be filtering
Net；8 be that outside screen pack strengthens fixing device.
Embodiment
As shown in figures 1-6, self-cleaning irrigation filtration core, including inner side filter screen fixing device and outside screen pack are consolidated
Determine device, screen pack 7 has been folded between inner side filter screen fixing device and outside filter screen fixing device, has been folded with
The head and the tail of screen pack 7 be fixedly connected.
Inner side filter screen fixing device includes being located at the first inner side filter screen fixing device 1 on filtration core top and was located at
Second inner side filter screen fixing device 3 of filter core bottom, outside filter screen fixing device includes first positioned at filtration core top
Outside filter screen fixing device 2 and positioned at the second outside of filtration core bottom filter screen fixing device 4.
Some first collection are provided between first inner side filter screen fixing device 1 and the second inner side filter screen fixing device 3
Dirty groove 5, is provided with some second dirt collections between the first outside filter screen fixing device 2 and the second outside filter screen fixing device 4
Groove 6, the quantity of the first sewage sump 5 is equal with the quantity of the second sewage sump 6.
Direction that the opening of first sewage sump 5 and the second sewage sump 6 enters according to sewage determines, when sewage is from screen pack
7 outsides are when entering 7 inner side of screen pack, and the opening of the first sewage sump 5 is towards the outside of filtration core, the opening of the second sewage sump 6
Towards the inner side of filtration core；When sewage enters 7 outside of screen pack from the inner side of screen pack 7, the opening direction of the first sewage sump 5
The inner side of filtration core, the opening of the second sewage sump 6 is towards the outside of filtration core.
Inner side is additionally provided between first inner side filter screen fixing device 1 and the second inner side filter screen fixing device 3 to filter
Net strengthens fixing device, can improve and reinforce the collapsed shape of screen pack.
Outside is additionally provided between first outside filter screen fixing device 2 and the second outside filter screen fixing device 4 to filter
Net strengthens fixing device 8, can improve and reinforce the collapsed shape of screen pack.
First sewage sump 5 slopes inwardly from top to bottom, the second sewage sump 6 vertically downward, in the presence of such current,
Dirt in sewage sump is moved from trend filtration core bottom, and dirt is focused on into filtration core bottom.
First inner side filter screen fixing device 1, the second inner side filter screen fixing device 3, the first outside screen pack fix dress
Put 2 and second outside filter screen fixing device 4 be annulus, and the diameter of the first inner side filter screen fixing device 1 is more than second
The diameter of inner side filter screen fixing device 3, the diameter of the first inner side filter screen fixing device 1 is fixed less than the second outside screen pack
The diameter of device 4, the diameter of the first outside filter screen fixing device 2 is equal to the diameter of the second outside filter screen fixing device 4.
First sewage sump 5 and the second sewage sump 6 are six.
First sewage sump 5 and the angle α of horizontal direction are 75-82 °.
Screen pack 7 is prepared from by the dirty nano material of not viscous oil.
Screen pack 7 in the present invention using modified not viscous oil thing nano material, for requiring high water quality by screen pack 7
Pollution-resistant membrane is replaced by, the self-cleaning of net or film is realized.Wherein pollution-resistant membrane mainly by the use of polyether sulfone be modified made film as
Material of preparing, than being had the advantages that with the made film of polyether sulfone：
1st, surface contact angle is small, i.e. the hydrophilicity of film is more preferable.I.e. antipollution effect is more preferable；
2nd, attenuation rate is small, i.e. the usage cycles of film are elongated, i.e., reduced using the cost of film；
3rd, modified film, after backwash, can remove more pollutants.
Polyether sulfone modifying process is as follows：
Using gamma-rays as initiation means to film raw material polyether sulfone（PES）Grafting is carried out under homogeneous phase solution state to change
Property.
Homogeneous phase solution system co segregation technology path is as follows：The membrane material that will first be purified through over cleaning, i.e. polyethers
Sulfone（PES）It is added in 1-METHYLPYRROLIDONE, grafted monomers NVP is added after stirring and dissolving（NVP）,
Continue to stir until formation homogeneous phase solution, then uses homogeneous phase solution of the gamma-ray irradiation of Guyuan Jing Guo deoxidation treatment, by spoke
According to several active sites are produced on moral polyether sulfone strand, then hydrophilic monomer NVP is grafted on these active sites, produces branch
Chain.After irradiation terminates, graft product is separated from solution and its structure and property are analyzed and characterized, last profit
With obtained graft product PES-g-PVP films.
The course of work of the present invention is as follows：Filtration core in the present invention is installed in filter and carries out filtration, it is dirty
Water enters inside filtration core, and sewage is entered inside screen pack 7 from the outside of screen pack 7 by the filtering of screen pack 7, by filtering
The filtering of net 7, clean water passes through screen pack 7, and dirt is trapped within the first sewage sump 5 and the second sewage sump 6, and in current
In the presence of, the dirt in sewage sump is moved from trend filtration core bottom, and such dirt focuses on filtration core bottom, works as filtration core
Bottom build up of dirt is more when needing discharge, is provided with sewage draining valve in the capping of filter, it is necessary to open valve i.e. during blowdown
Can, without opening capping completely, dirt can be discharged, then valve is closed.So discharge dirt need not dismantle filtering
Device and filtration core, it is convenient and swift.
Above-described is only the preferred embodiment of the present invention, it is noted that for those skilled in the art,
Under the premise of general idea of the present invention is not departed from, some changes and improvements can also be made, these should also be considered as the present invention's
Protection domain.
Claims (10)
1. self-cleaning irrigation filtration core, it is characterised in that：Dress is fixed including inner side filter screen fixing device and outside screen pack
Put, screen pack has been folded between inner side filter screen fixing device and outside filter screen fixing device（7）, it is folded with
Screen pack（7）Head and the tail are fixedly connected.
2. self-cleaning irrigation filtration core according to claim 1, it is characterised in that：The inner side filter screen fixing device
Including the first inner side filter screen fixing device positioned at filtration core top（1）With the second inner side screen pack positioned at filtration core bottom
Fixing device（3）, first outside filter screen fixing device of the outside filter screen fixing device including being located at filtration core top（2）With
Positioned at the second outside of filtration core bottom filter screen fixing device（4）.
3. self-cleaning irrigation filtration core according to claim 2, it is characterised in that：First inner side screen pack is fixed
Device（1）With the second inner side filter screen fixing device（3）Between be provided with some first sewage sumps（5）, the first outside screen pack
Fixing device（2）With the second outside filter screen fixing device（4）Between be provided with some second sewage sumps（6）, the first sewage sump
（5）Quantity and the second sewage sump（6）Quantity it is equal.
4. self-cleaning irrigation filtration core according to claim 2, it is characterised in that：First inner side screen pack is fixed
Device（1）With the second inner side filter screen fixing device（3）Between be additionally provided with inner side screen pack strengthen fixing device.
5. self-cleaning irrigation filtration core according to claim 2, it is characterised in that：First outside screen pack is fixed
Device（2）With the second outside filter screen fixing device（4）Between be additionally provided with outside screen pack strengthen fixing device（8）.
6. self-cleaning irrigation filtration core according to claim 3, it is characterised in that：First sewage sump（5）From top
Hold to bottom and slope inwardly, the second sewage sump（6）Vertically downward.
7. self-cleaning irrigation filtration core according to claim 1, it is characterised in that：The screen pack（7）By not viscous oil
Dirty nano material is prepared from.
8. self-cleaning irrigation filtration core according to claim 2, it is characterised in that：First inner side screen pack is fixed
Device（1）, the second inner side filter screen fixing device（3）, the first outside filter screen fixing device（2）It is solid with the second outside screen pack
Determine device（4）It is annulus, and the first inner side filter screen fixing device（1）Diameter be more than the second inner side filter screen fixing device
（3）Diameter, the first inner side filter screen fixing device（1）Diameter be less than the second outside filter screen fixing device（4）Diameter,
First outside filter screen fixing device（2）Diameter be equal to the second outside filter screen fixing device（4）Diameter.
9. self-cleaning irrigation filtration core according to claim 3, it is characterised in that：First sewage sump（5）With
Two sewage sumps（6）It is six.
10. self-cleaning irrigation filtration core according to claim 6, it is characterised in that：First sewage sump（5）With water
Square to angle α be 75-82 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710410632.9A CN107080995B (en) | 2017-06-03 | 2017-06-03 | Self-cleaning irrigation filter element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710410632.9A CN107080995B (en) | 2017-06-03 | 2017-06-03 | Self-cleaning irrigation filter element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107080995A true CN107080995A (en) | 2017-08-22 |
| CN107080995B CN107080995B (en) | 2023-03-14 |
Family
ID=59608561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710410632.9A Active CN107080995B (en) | 2017-06-03 | 2017-06-03 | Self-cleaning irrigation filter element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107080995B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112619221A (en) * | 2020-12-24 | 2021-04-09 | 苏州艾可维斯过滤设备有限公司 | Filter core with self-cleaning function for industrial sewage treatment |
| CN114307653A (en) * | 2021-12-22 | 2022-04-12 | 云南中医药大学 | Filter equipment for biochemistry experiments |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101033722A (en) * | 2007-04-12 | 2007-09-12 | 吴雪荣 | Detachable and separable filter element |
| CN101204308A (en) * | 2006-12-20 | 2008-06-25 | 乐金电子(天津)电器有限公司 | Filter core structure of dust collecting barrel filter |
| CN202223955U (en) * | 2011-02-12 | 2012-05-23 | 杨建平 | Folded-screen filter with cylinder-type filter element |
| CN203564906U (en) * | 2013-11-13 | 2014-04-30 | 固安百滤得机械制造有限公司 | Folding filter element |
| CN205999152U (en) * | 2016-08-16 | 2017-03-08 | 浙江锐博科技工程有限公司 | A kind of filter core for sewage water filtration |
| CN207324220U (en) * | 2017-06-03 | 2018-05-08 | 华北水利水电大学 | Self-cleaning irrigation filtration core |
-
2017
- 2017-06-03 CN CN201710410632.9A patent/CN107080995B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101204308A (en) * | 2006-12-20 | 2008-06-25 | 乐金电子(天津)电器有限公司 | Filter core structure of dust collecting barrel filter |
| CN101033722A (en) * | 2007-04-12 | 2007-09-12 | 吴雪荣 | Detachable and separable filter element |
| CN202223955U (en) * | 2011-02-12 | 2012-05-23 | 杨建平 | Folded-screen filter with cylinder-type filter element |
| CN203564906U (en) * | 2013-11-13 | 2014-04-30 | 固安百滤得机械制造有限公司 | Folding filter element |
| CN205999152U (en) * | 2016-08-16 | 2017-03-08 | 浙江锐博科技工程有限公司 | A kind of filter core for sewage water filtration |
| CN207324220U (en) * | 2017-06-03 | 2018-05-08 | 华北水利水电大学 | Self-cleaning irrigation filtration core |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112619221A (en) * | 2020-12-24 | 2021-04-09 | 苏州艾可维斯过滤设备有限公司 | Filter core with self-cleaning function for industrial sewage treatment |
| CN114307653A (en) * | 2021-12-22 | 2022-04-12 | 云南中医药大学 | Filter equipment for biochemistry experiments |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107080995B (en) | 2023-03-14 |
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