CN2843600Y - Membrane filter - Google Patents
Membrane filter Download PDFInfo
- Publication number
- CN2843600Y CN2843600Y CN 200520139745 CN200520139745U CN2843600Y CN 2843600 Y CN2843600 Y CN 2843600Y CN 200520139745 CN200520139745 CN 200520139745 CN 200520139745 U CN200520139745 U CN 200520139745U CN 2843600 Y CN2843600 Y CN 2843600Y
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- CN
- China
- Prior art keywords
- filter
- filter element
- backwashing
- pressure
- sealed tank
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to the improvement of microporous membrane and pipe filter, particularly to a membrane filter which has high backwashing pressure and thorough back flushing and washing. The utility model is characterized in that the outside of the top of a closed filter unit of the filter is externally connected with a siphoning device composed of a flow guiding pipe, a quick-opening valve and a water sealed tank which are connected in series. The upper part of the water sealed tank is provided with a vent and a water outlet which is higher than a liquid inlet. Therefore, a vacuum layer can be formed above the top of the closed filter unit by the siphoning device before backwashing. The hydraulic pressure for backwashing above the top of the closed filter unit is increased by one atmospheric pressure, accordingly, high pressure backwashing to a filter element is realized, and filth clinging to the surface of the filter element or infiltrating into the filter element can be cleaned out. A high backwashing pressure can be obtained under the condition of not increasing the filter height, the backwashing ability to a membrane filter element is markedly improved, and the filter element is washed thoroughly. The utility model not only effectively keep a high filtering ability, but also prolongs the service life of the filter element.
Description
Technical field
Utility model is about the improvement to microporous barrier pipe filter, relates in particular to a kind of backwashing pressure height that has, and film filter is completely cleaned in recoil.
Background technology
The filter that film filter such as microporous barrier pipe filter element are formed, the filtration barrel body that is separated into airtight filter element and open topped storage area is arranged, and the some hollow micropore filtering film pipes that vertically are set up in parallel in airtight filter element are formed, rely on film pipe inside and outside differential pressure to filter during filtration, the barrier effect of microporous barrier pipe, make that impurity particle, suspension etc. are blocked in the film tube-surface in the filter medium, clear filtrate is then worn filmed passing tube and is discharged from interior pipe and enter the water outlet of storage area, upper strata.
In filter cycle, meeting such as particulate in the infiltration into microporous film pipe and stick to the film tube-surface, is piled up and is caused film pipe plug plug gradually in the filter medium, and filter capacity descends, therefore need periodically to cleanings that recoil of film pipe filter element, with the dirt tack coat of removing attached to the surface.Existing film filter is to cleanings that periodically recoil of microporous barrier pipe, and by the water that stores in the uncovered storage area above the filter film tube, the gravity that relies on this water is to the cleaning that recoils of film pipe.Yet because the water storage height of water level is limited, counter-flushing liquid potential difference less (generally being no more than 0.5M), thereby backwashing pressure less (ρ gh).Thisly only rely on backwashing water gravity recoil to clean, film pipe external and internal pressure difference is little, and the dirt that is difficult to will to infiltrate, stick to the film tube-surface goes out, get rid of and clean up.If things go on like this, not only cause the filter element filter capacity to descend, the filter production capacity reduces, but also can shorten filter element service life, frequently changes filter element and makes operating cost increase.
Summary of the invention
The utility model purpose is to overcome the deficiency of above-mentioned prior art, and a kind of recoil cleaning pressure height is provided, and filter element surface is cleaned thoroughly filter efficiency height, the film filter of filter element long service life.
The utility model purpose realizes, the main improvement is on top, film filter filter element top, external one has the siphoning installation of water sealed tank, before recoil is cleaned to filter element, open the siphoning installation valve in advance, make the rapid discharge of filter element top water and form an instantaneous vacuum layer, thereby can make top recoil rinse water pressure can increase an atmospheric pressure, make it with high pressure water form filter element to be got effective washing to the filter element cleaning that recoils.Specifically, the utility model film filter, comprise the filtration barrel body that is separated into the uncovered exhalant region of airtight filter element and top, vertically be set side by side with some hollow microporous barrier pipe filter elements in the airtight filter element, it is characterized in that top, airtight filter element top is circumscribed with the siphoning installation that mozzle, quck-opening valve, water sealed tank are composed in series, blow vent is arranged at said water sealed tank top, and above being higher than inlet delivery port is arranged.
Utility model siphoning installation supercharging operation principle: recoil is opened the siphoning installation quck-opening valve before cleaning at first in short-term, the airtight filter element top water of filter is instantaneous to leak into water sealed tank fast by mozzle, owing to maintain water layer (delivery port is higher than water inlet) in the water sealed tank, thereby cut off entering of air, make and produce a vacuum layer rapidly in short-term at airtight filter element top, because the existence of vacuum layer, make recoil rinse water pressure on original recoil pressure-based, can increase an atmospheric pressure, thereby filter element is formed the high pressure backwash.The quck-opening valve effect, be when guaranteeing that siphon backwash liquid level above filter cylinder does not have obvious decline moment finish, help the formation of region of no pressure like this.The blow vent effect of water sealed tank top is that the interior air of water sealed tank can in time be discharged when guaranteeing siphon, and does not influence quick siphon that in addition, the existence of blow vent also helps and reduces siphon water sealed tank volume and delivery port caliber.
Utility model is for helping keeping the filter surrounding environment, avoid rapid draining to have blow vent excessive by water sealed tank top, a kind of better is that blow vent is raise, a connecting pipe promptly is set, the gas outlet height is increased to more than the uncovered exhalant region height of water level in filter top, and draining just can not overflowed from blow vent when fast like this.If blow vent adopts the low level setting, better is to establish draining hole in addition in the gas outlet, arrange to required whereabouts with the guiding overflow water.
For guaranteeing the formation of airtight filter element top vacuum layer, utility model siphoning installation mozzle is provided with, better be the smaller the better with airtight filter element top layer distance, little with the top layer distance, draining is just few, it is just obvious more that vacuum forms effect, is preferably in airtight filter element top layer (suspention screen pipe porous plate) the below 250mm.If mozzle was provided with low, vacuum forms difficulty relatively, and also can cause the too much waste of filter medium.
In addition, utility model is a kind of to be more preferably an external again air bleeding valve above mozzle, may exist gas to discharge on top, airtight filter element top earlier before siphon drainage, so more helps instantaneous draining and forms vacuum layer.
Utility model is owing to be circumscribed with the siphoning installation that mozzle, quck-opening valve, water sealed tank are composed in series on top, the airtight filter element of film filter top, before cleaning, recoil can form an instantaneous vacuum layer on top, airtight filter element top by this siphoning installation, the existence of vacuum layer, make top recoil rinse water pressure can increase an atmospheric pressure, thereby filter element is formed the high pressure backwash, can make attached to filter element surface or the dirt that infiltrates in it to be eliminated totally.Can obtain very high backwashing pressure not increasing under the filter height situation, significantly improve the backwash ability to film filtering element, filter element cleans thoroughly, has not only effectively kept high filter capacity, but also has prolonged the service life of filter element.The auxiliary siphon recoil of utility model cleaning device also can be used for other filters higher to the backwashing water pressure request.
Below in conjunction with an optimization embodiment, further specify utility model.
Description of drawings
Accompanying drawing is a utility model example structure schematic diagram.
The specific embodiment
Embodiment: referring to accompanying drawing, the utility model film filter comprises the filtration barrel body that is separated into down airtight filter element 1 and open topped exhalant region 6, and airtight filter element is hung with microporous barrier pipe filter element 4 by porous plate, and liquid level gauge 5 is arranged at exhalant region top.Under the airtight filter element top layer in the 250mm, be circumscribed with the mozzle 7 of series connection, the siphoning installation that quck-opening valve 8, water sealed tank 2 are formed, the breather pipe 3 that is communicated with atmosphere and exceeds filtration water outlet water level is arranged at the water sealed tank top, and being higher than the mozzle import has delivery port (showing) in dorsal part figure.The mozzle top is circumscribed with air bleeding valve 9.
When recoil is cleaned, open air bleeding valve 9 at first in short-term, discharge the gas that top, filter element top may exist, close this air bleeding valve then, the instantaneous quck-opening valve 8 of opening makes filter element top upper water discharge by mozzle, quck-opening valve, water sealed tank, produces a vacuum layer in short-term.Because the existence of vacuum layer, making in the exhalant region of top the recoil water produce pressure for screen pipe is the backwashing pressure of atmospheric pressure+ρ gh, and high backwashing pressure can be guaranteed the effective cleaning to filter element.The keying control of valve can be controlled by the filter calculations machine.
Omit the air bleeding valve of mozzle top, vacuum layer also can form.
Claims (4)
1, film filter, comprise the filtration barrel body that is separated into the uncovered exhalant region of airtight filter element and top, vertically be set side by side with some hollow microporous barrier pipe filter elements in the airtight filter element, it is characterized in that top, airtight filter element top is circumscribed with the siphoning installation that mozzle, quck-opening valve, water sealed tank are composed in series, blow vent is arranged at said water sealed tank top, and above being higher than inlet delivery port is arranged.
2,, it is characterized in that said water sealed tank top blow vent has to be increased to communicating pipe more than the exhalant region water level of filter top according to the described film filter of claim 1.
3,, it is characterized in that said mozzle is provided with in the airtight filter element top layer below 250mm according to claim 1 or 2 described film filters.
4,, it is characterized in that said mozzle top is circumscribed with air bleeding valve according to the described film filter of claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520139745 CN2843600Y (en) | 2005-12-09 | 2005-12-09 | Membrane filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520139745 CN2843600Y (en) | 2005-12-09 | 2005-12-09 | Membrane filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2843600Y true CN2843600Y (en) | 2006-12-06 |
Family
ID=37485556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520139745 Expired - Lifetime CN2843600Y (en) | 2005-12-09 | 2005-12-09 | Membrane filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2843600Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013136336A1 (en) * | 2012-03-15 | 2013-09-19 | Advanced Mem-Tech Ltd. | Enhancement of membrane robustness by treatment with ionic materials |
| CN109966925A (en) * | 2019-03-02 | 2019-07-05 | 汤宇 | It is a kind of to dodge the clear membrane process of quick-fried method recoil and its device |
-
2005
- 2005-12-09 CN CN 200520139745 patent/CN2843600Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013136336A1 (en) * | 2012-03-15 | 2013-09-19 | Advanced Mem-Tech Ltd. | Enhancement of membrane robustness by treatment with ionic materials |
| CN109966925A (en) * | 2019-03-02 | 2019-07-05 | 汤宇 | It is a kind of to dodge the clear membrane process of quick-fried method recoil and its device |
| CN109966925B (en) * | 2019-03-02 | 2023-11-24 | 汤宇 | Backflushing film cleaning process and device by flash explosion method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20061206 |
|
| EXPY | Termination of patent right or utility model |