CN105771397A - Potential-barrier-free filter as well as use method and application thereof - Google Patents
Potential-barrier-free filter as well as use method and application thereof Download PDFInfo
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- CN105771397A CN105771397A CN201610252244.8A CN201610252244A CN105771397A CN 105771397 A CN105771397 A CN 105771397A CN 201610252244 A CN201610252244 A CN 201610252244A CN 105771397 A CN105771397 A CN 105771397A
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- 239000007788 liquid Substances 0.000 claims abstract description 118
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- 238000000926 separation method Methods 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 6
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- 239000000725 suspension Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
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- WMGSQTMJHBYJMQ-UHFFFAOYSA-N aluminum;magnesium;silicate Chemical compound [Mg+2].[Al+3].[O-][Si]([O-])([O-])[O-] WMGSQTMJHBYJMQ-UHFFFAOYSA-N 0.000 description 2
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/027—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks rigidly mounted in or on tanks or reservoirs
- B01D35/0273—Filtering elements with a horizontal or inclined rotation or symmetry axis submerged in tanks or reservoirs
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
-
- 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
Abstract
The invention relates to a novel potential-barrier-free filter. A filtering head and a liquid storage device are integrated as a whole; a filtering medium is used at the bottom of the filter; in the filtering process, the filter floats on the surface of a solid-liquid mixture; under vacuum negative pressure, liquid enters the liquid storage device, and a vertical liquid guide pipe is not used during filtering, so that liquid components can directly enter the liquid storage device without overcoming a gravity potential barrier generated by the vertical guide pipe; furthermore, due to the negative pressure generated by vacuum in the filtering process, the separated liquid cannot return back to the solid-liquid mixture, so that the novel filter has a great advantage when separating the solid-liquid mixture with high liquid viscosity.
Description
Technical field
The present invention relates to a kind of filter, particularly to the filter that a kind of solidliquid mixture bigger for viscosity is easily separated.
Background technology
Filtration is the general name of a big class unit operation.By the process that fluid purification is purified by special device, the mode of filtration is a lot, and the system of use is also very extensive, and solid-liquid, solid-gas, bulky grain, little granule are typical.
Filtration is that the liquid (or gas) in motive force or other External Force Acting low suspension liquid (or the gas that generates heat containing solid particle) is through medium, solid particle and the filtered medium of other materials retain, so that the operation that solid and other materials separate with liquid (or gas).
Sucking filtration is exactly filtration under diminished pressure.Utilize air pump to make the pressure in bottle,suction reduce, reach the purpose of solid-liquid separation.Common device has vacuum pump, buchner funnel, bottle,suction, sebific duct, filter paper (filter cloth or filter membrane) etc..Common mode is to utilize vacuum pump to make air pressure in bottle,suction reduce, and liquid to be separated passes sequentially through filter paper and buchner funnel, and owing to action of gravity enters in bottle,suction, solid is stayed on filter paper.
But there is shortcoming in this traditional approach.Due to action of gravity, liquid to be separated can enter bottle,suction along filter paper with buchner funnel gap, causes leakage filter phenomenon, pollutes filtrate.And filtering residue easily blocks filter paper, cause that follow-up sucking filtration is not smooth, even hinder follow-up sucking filtration.If the liquid after filtering and heating, filtrate easily solidifies when falling into bottle,suction, causes trouble to the taking-up of filtrate.These all can affect sucking filtration efficiency and result.
Based on this, when laboratory carries out sucking filtration, in order to make up the deficiency of buchner funnel to a certain extent, prior art discloses a kind of filter, such as, disclosed in CN201220017405 (CN202538506U) filter swims in the upper surface of solidliquid mixture, precipitate under gravity, sinks to solidliquid mixture lower floor gradually, and this makes the upper strata of solidliquid mixture become the clear liquid that contents of precipitate is little.In filter process, filter is extracted by filter cloth clear liquid out under vacuum from the upper surface of solidliquid mixture.Most of the time owing to filtering is to cross cleaner liquid, and this makes clogging deposits filter cloth cause the problem of filtration difficulty greatly to alleviate, thus improve the efficiency of filtration to a certain extent.
Above-mentioned filter obtains solid constituent when can be used for separating a large amount of solidliquid mixture.But owing to filtering head separates with liquid reservoir, and the pipeline of transports liquid component is long, its material is rubber or plastics, and this makes the contaminated increased risk of liquid component, and easily causes the loss of liquid component.Although can by when liquid is defeated without rubber or plastic conduit, to avoid liquid component contaminated, or shorten the catheter length of transports liquid component to a certain extent, lose in filter process thus reducing liquid components, but still suffer from following shortcoming: using a tube for transfusion vertically upward in filter, the liquid being separated by filtration out needs to overcome the produced gravity barrier layer of vertical conduit could enter liquid reservoir；It addition, when the solidliquid mixture that this separate with filter liquid viscosity of use is big, it is possible to make filtration failure less than liquid components because collecting.
Summary of the invention
In order to overcome the above-mentioned problems in the prior art, the present invention provides a kind of filter, filtering head and liquid reservoir are merged into a single whole, uses filter medium in the bottom of filter, in filter process, filter swims in the surface of solidliquid mixture, under the negative pressure of vacuum, liquid enters in the liquid reservoir of filter, avoids and use vertical catheter in filtration, therefore, liquid components need not overcome gravity potential barrier produced by vertical conduit to be directly entered liquid reservoir again；Solid and liquid adverse movement in sucking filtration process, and then reach the purpose solid sediment of lower section and the liquid of top separated；Additionally, due to negative pressure produced by vacuum in filter process, isolated liquid will not flow back in solidliquid mixture so that this filter tool when the solidliquid mixture that separation liquid viscosity is big has great advantage, thus completing the present invention.
For this, the present invention provides a kind of filter, and including sealing-plug 1 and liquid reservoir 2, wherein, this filter is inversion type, it is preferable that described liquid reservoir 2 is cylinder, and bottom is with aperture 4；This filter also includes vacuum line 3, has filter medium 5 in bottom.
The present invention also provides for the using method of above-mentioned filter, comprises the following steps:
1, filter is placed in solidliquid mixture 6 to be separated, optionally floats on liquid level；
2, vacuum line 3 connects vacuum, it is preferable that connects vacuum pump and opens vacuum pump；
3, liquid components is flowed in liquid reservoir 2 by filter medium 5 and aperture 4, becomes filtrate 7, it is achieved solid-liquid separation.
Filter provided by the invention can effectively realize solid-liquid separation, and shows following advantage:
(1) filtering head and liquid reservoir are merged into a single whole, filtration avoids the vertical catheter of use and sebific duct, therefore, liquid components need not overcome gravity potential barrier produced by vertical conduit to be directly entered liquid reservoir again, avoid the problem that filtrate is detained in the duct, is lost, also solve the problem that filtrate is polluted by sebific duct；
(2) in filter operation, filtrate is stored in the filter, and filter is suspended in solidliquid mixture, filtrate is incubated by the waste heat that so can utilize the solidliquid mixture of heat, thus avoiding, because temperature declines, causing and filtrate declining with temperature and the solute of dissolubility reduction precipitates out in filter process；
(3) solid and liquid adverse movement in sucking filtration process, liquid is from being taken away by vacuum above, and solid is still stayed in a reservoir by action of gravity major part, thus significantly reduce and cause filter efficiency decline problem because of clogging deposits filter medium such as filter paper, filter cloth, filter element or filter membrane；
(4) precipitation is filtered, in washing process, it is absent from a deposit and transfers to funnel from original container, then the process being shifted out from funnel.Thus reduce precipitation cause because of transfer solid matter loss, and operating process save time, laborsaving；
(5) even if the precipitated blocking of filter medium, but can be cleared up simply, such as funnel be taken out, the sediment undergoes washing on the filter media surface such as filter paper, filter cloth, filter element or filter membrane is clean, or change filter medium, then can be continuing with；
(6) nutsch filter floatability is on liquid level, automatically declines along with the reduction of liquid level in sucking filtration process.Whole operating process is made to be automatically performed；Further, since negative pressure produced by vacuum in filter process, isolated liquid will not flow back in solidliquid mixture so that this filter tool when the solidliquid mixture that separation liquid viscosity is big has great advantage.
Accompanying drawing explanation
Fig. 1 is the structural representation of the filter of the present invention, wherein: 1-sealing-plug, 2-liquid reservoir, 3-vacuum line, 4-aperture, 5-filter medium, 6-solidliquid mixture, 7-filtrate.
Detailed description of the invention
Below in conjunction with accompanying drawing, by detailed description of the invention, the present invention is described in detail.The features and advantages of the invention will become more apparent from along with these descriptions, clearly.
According to a kind of embodiment, the present invention provides a kind of filter, and including sealing-plug 1 and liquid reservoir 2, wherein, this filter is inversion type, it is preferable that described liquid reservoir 2 is cylinder.
According to the present invention, described sealing-plug 1 is positioned at cylinder top, cylinder top can be individually covering, reach to seal, for instance overall plug covers cylinder top, can also seal together with the remainder of cylinder top, such as cylinder top molding together with vertical outer wall, and leave diameter between 1 centimetre-1 decimeter, it is preferable that 3 centimetres-8 centimetres, more preferably the consent of 4 centimetres-6 centimetres, is used for holding sealing-plug 1.
According to the present invention, this filter also includes vacuum line 3, and this vacuum line 3 runs through the consent of sealing-plug 1, is connected with vacuum pump or vacuum system by this vacuum line 3, it is achieved filter is carried out evacuation.
Vacuum line 3 of the present invention can be any tube, it is preferred to use glass tubing, and it is directly connected to vacuum pump or vacuum system, or is connected with vacuum pump or vacuum system by flexible pipe.
The bottom of liquid reservoir 2 of the present invention is with aperture 4, it is preferable that with multiple apertures 4, described aperture 4 diameter is identical or different, it is preferable that diameter is identical, and more preferably the diameter of described aperture is 0.01-0.2mm.
According to the present invention, described filter has filter medium 5 in bottom, and the filter medium 5 of the present invention is in order to intercept solid particle contained by fluid and to have the various porous materials of supporting role in sucking filtration operation.Conventional filter medium has following a few class:
1. braided material, the filter cloth woven such as naturally occurring or synthetic fiber, tinsel and filter screen, be filter medium the most frequently used in commercial production.This type of material price is cheap, and it is convenient to clean and change, and the minimum grain size that can retain is 5～65 μm.The single thread filter screen made with fibers such as polyamide, polyester or polypropylene, homogeneous, corrosion-resistant, endurance, progressively replacing other fabric filter clothes；
2. porous solid, including bique, sintering metal or glass, or the porous plastic pipe etc. by plastics fine powder bonding.The minimum grain size that this type of material can retain is 1～3 μm, is usually used in processing the suspension containing a small amount of molecule；
3. accumulation medium, such as granular materials such as sand, gravel, Linesless charcoal and kieselguhr, or the accumulation horizon of the non-woven fiber such as glass cotton.It is generally used for and processes the suspension that solids content is little, such as city water and sugar liquid etc. to be clean.
Additionally, industrial filter paper also can share with above-mentioned filter medium, to intercept a small amount of subparticle in suspension.In recent years, the manufacture of high-molecular porous film and application grow a lot, and are applied to the filtration of more small granule, to obtain the liquid of highly clarification.Film suitable in 0.1～1 μm of granule of elimination is called microporous filter membrane；Film suitable in 0.01～0.1 μm of granule of elimination is called ultrafilter membrane.Microporous filter membrane and ultrafilter membrane are widely used in the industry such as medicine, food and biochemistry.
The filter medium that present invention preferably uses has filter paper, filter cloth, filter element or filter membrane.
According to the present invention it is possible to adopt modes such as tying up, the filter medium such as filter paper or filter cloth is wrapped up the bottom of liquid reservoir 2 and ties up fixing so that when filter is inverted, filter medium does not fall off；Can also filter medium 5 be layed in bottom liquid reservoir 2, optionally carry out bonding, namely by stickums such as binding agents, filter medium is bonded at (upper surface or lower surface) bottom liquid reservoir 2 as filtered core.
In the preferred embodiment of the present invention, it is also possible to it is cursory to arrange for filter, described cursory it be itself and be placed in it filter together and can float on the object on liquid level.Under cursory effect, filter can float on liquid level, and makes liquid reservoir and the contact interface outer rim of filter medium such as filter paper, filter cloth, filter element or filter membrane higher than solidliquid mixture liquid level to be separated, therefore can be prevented effectively from Lou filter phenomenon.At this, leakage filter refers to that precipitate leaks through from the gap of the contact interface outer rim of the filter mediums such as liquid reservoir and filter paper, filter cloth, filter element or filter membrane, causes solid precipitation to leak into filtrate.
According to the present invention, described filter is without catheter, bottom liquid reservoir 2 and the aperture 4 being provided with form filtering head, so that liquid reservoir 2 and filtering head are integrated, liquid components in the solidliquid mixture 6 filtered need not overcome gravity potential barrier produced by catheter to be directly entered liquid reservoir 2, becomes filtrate 7.
Visible, the filter of the present invention is still a kind of inversion type filter, and in filter process, filter swims in the surface of solidliquid mixture, and under the negative pressure of vacuum, liquid enters filter after filtering core by filter cloth, filter paper or use.Compared with the filter of prior art, the maximum feature of this filter is not have vertical catheter in filtration.Therefore, gravity potential barrier produced by vertical conduit need not be overcome again to be directly entered liquid reservoir by the liquid components of filter cloth, filter paper or use filtration core.This makes this filter have certain advantage when the solidliquid mixture that separation liquid viscosity is big.Additionally, it is to be noted, although liquid reservoir directly below with the aperture on filter and filter filter cloth, filter paper or use filter core contact, but produced by vacuum in filter process negative pressure, isolated solid-liquid mixing will not flow back in solidliquid mixture.
The present invention also provides for the using method of above-mentioned filter, comprises the steps:
Step 1: be placed in by filter in solidliquid mixture 6 to be separated, due to the cursory effect of self floating or optional setting, this filter will smoothly float on liquid level；
Step 2: vacuum line 3 connects vacuum, it is preferable that connect vacuum pump and open vacuum pump；
Step 3: liquid components is flowed in liquid reservoir 2 by filter medium 5 and aperture 4, becomes filtrate 7, and solid normally due to action of gravity and be sink to container bottom, finally realize solid-liquid separation.
In step 3, under the negative pressure of vacuum, the liquid components in the solidliquid mixture 6 that filter need not overcome gravity potential barrier to be directly entered liquid reservoir 2；Meanwhile, under the negative pressure of vacuum, filtrate 7 will not flow back in solidliquid mixture 6.
And vacuum extractor disclosed in prior art (such as CN201220017405) generally comprises conduit, fluid reservoir and vacuum system, before fluid reservoir is positioned at vacuum system, it is close except two conduits, one conduit is connected with vacuum system, and the outlet upwards of the funnel of another conduit and nutsch filter is connected.And conduit and hopper outlet is connected directly or indirectly, and when being directly connected to, the hopper outlet mated with bore with resilient conduit is directly connected to, and then utilizes the connection members such as the conventional air exhaust nozzle of suction bottle, glass tubing, rubber tube, plastic tube, plug, glass connector to be attached when being indirectly connected with.For ease of sucking filtration, the inclined-plane of its hopper outlet is towards the air exhaust nozzle of suction bottle.
Nutsch filter according to the present invention serves many purposes, may be used for the isolated by filtration of multiple solidliquid mixture, these solidliquid mixtures both can be the suspension that physical mixed is formed, it can also be the solid-liquid mixed liquor of chemical reaction formation, reactant or the by-product of precipitation form is generated, it is also possible to be the solidliquid mixture generated in commercial production or environmental improvement process in course of reaction.Preferred described solidliquid mixture has certain viscosity, and more preferably its viscosity is 0.1-1600Pa s.
According to the present invention, in order to solid-liquid separation is more efficient, it is preferable that before operation vacuum system is easily separated, make solidliquid mixture sufficient standing, so that solid matter is deposited in bottom as far as possible.
According to the present invention, after running a period of time, if filter medium is aspirated the precipitation come up on a small quantity and blocks, then filter medium can be carried out flushing or the cleaning of necessity, by the precipitate Ex-all on surface, then proceed to use.
According to the present invention, in order to improve solid-liquid separation effect, in the later stage of sucking filtration, again stir with solid with certain quantity of fluid and mix, after sufficient standing, continue sucking filtration.
According to the present invention, if the solid after sucking filtration needs to wash, can a small amount of solvent be spread across on solid, stand a moment, then drained, and carry out the dried of other modes, as dried further or using desiccant moisture absorption.
Fig. 1 is the structural representation of the filter of the present invention, wherein, sealing-plug 1 is positioned at liquid reservoir 2 top, vacuum line 3 runs through the consent of sealing-plug 1, it is connected with vacuum pump or vacuum system by sebific duct, the bottom of liquid reservoir 2 is with aperture 4, filter medium 5 (such as nylon filtering cloth) wraps up the bottom of liquid reservoir 2 and ties up fixing, after this filter is placed in solidliquid mixture 6 to be separated and opens evacuation, liquid components in solidliquid mixture 6 is directly entered liquid reservoir 2, become filtrate 7, solid is sink to container bottom due to action of gravity, finally realize solid-liquid separation.
Embodiment 1:
Aluminium-magnesium silicate powder adds and has in the paraffin oil of certain viscosity, after aluminium-magnesium silicate powder drop, uses this filter to carry out solid-liquid separation operation, in an experiment, using fine denier nylon cloth as the filter cloth cover bottom at filter, then carries out sucking filtration.
Test result indicate that, in several minutes, as clear as crystal paraffin oil is filtered the liquid reservoir of device by filter cloth, it is achieved that solid-liquid separation.After filtration completes, even if the filter cloth removed on filter, under the negative pressure of vacuum, the paraffin oil as filtrate remains in liquid reservoir, will not flow out from the aperture of bottom.
Above by preferred embodiment, the present invention is carried out exemplary explanation.But it is to be understood that; these detailed description of the invention are only the illustrative explanations to the present invention; protection scope of the present invention is not constituted any restriction; when without departing from spirit and scope of the present invention; the technology of the present invention content and embodiment thereof can be carried out various improvement, equivalencing or modification by those skilled in the art, and these each fall within protection scope of the present invention.
Claims (10)
1. a filter, including sealing-plug (1) and liquid reservoir (2), it is characterised in that this filter is inversion type, it is preferable that described liquid reservoir (2) is cylinder.
2. filter according to claim 1, it is characterized in that, described sealing-plug (1) is positioned at cylinder top, cylinder top can be individually covering, can also seal together with the remainder of cylinder top, for instance the molding together with vertical outer wall of cylinder top, and leave diameter between 1 centimetre-1 decimeter, preferably 3 centimetres-8 centimetres, the more preferably consent of 4 centimetres-6 centimetres.
3. filter according to claim 1 and 2, it is characterised in that
This filter includes vacuum line (3), this vacuum line (3) runs through the consent of sealing-plug (1), it is connected with vacuum pump or vacuum system by this vacuum line (3), it is preferable that described vacuum line (3) is glass tubing.
4. according to the filter one of claims 1 to 3 Suo Shu, it is characterised in that
Described liquid reservoir (2) bottom is with aperture (4), it is preferable that with multiple apertures (4), it is preferable that described hole diameter is identical or different, and more preferably diameter is identical.
5. according to the filter one of Claims 1-4 Suo Shu, it is characterised in that
This filter has filter medium (5) in bottom,
Described filter medium (5) is in order to intercept solid particle contained by fluid and preferably to have the various porous materials of supporting role in sucking filtration operation,
Preferred described filter medium (5) is wrapped up the bottom (such as bag filter cloth or filter paper) of liquid reservoir (2) or is layed in liquid reservoir (2) bottom (such as use and filter core),
It is cursory optionally to arrange for this filter.
6. the filter according to claim 4 or 5, it is characterised in that
This filter is without catheter, liquid reservoir (2) bottom and the aperture (4) being provided with form filtering head, so that liquid reservoir (2) and filtering head are integrated, liquid components in the solidliquid mixture (6) filtered need not overcome gravity potential barrier produced by catheter to be directly entered liquid reservoir (2), becomes filtrate (7).
7. the using method according to the filter one of claim 1 to 6 Suo Shu, comprises the following steps:
1) filter is placed in solidliquid mixture (6) to be separated, optionally floats on liquid level；
2) vacuum line (3) connects vacuum, it is preferable that connects vacuum pump and opens vacuum pump；
3) liquid components is flowed in liquid reservoir (2) by filter medium (5) and aperture (4), becomes filtrate (7), it is achieved solid-liquid separation.
8. method according to claim 7, it is characterised in that in step 3, under the negative pressure of vacuum, the liquid components in the solidliquid mixture (6) that filter need not overcome gravity potential barrier to be directly entered liquid reservoir (2).
9. the method according to claim 7 or 8, it is characterised in that in step 3, under the negative pressure of vacuum, filtrate (7) will not flow back in solidliquid mixture (6).
10. the purposes according to the filter one of claim 1 to 6 Suo Shu, isolated by filtration for solidliquid mixture, described solidliquid mixture is the solidliquid mixture generated in the solid-liquid mixed liquor that formed of the suspension that formed of physical mixed, chemical reaction or commercial production or environmental improvement process, it is preferable that described solidliquid mixture has certain viscosity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610252244.8A CN105771397B (en) | 2016-04-20 | 2016-04-20 | A kind of no potential barrier type filter and its application method and purposes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610252244.8A CN105771397B (en) | 2016-04-20 | 2016-04-20 | A kind of no potential barrier type filter and its application method and purposes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105771397A true CN105771397A (en) | 2016-07-20 |
| CN105771397B CN105771397B (en) | 2018-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610252244.8A Expired - Fee Related CN105771397B (en) | 2016-04-20 | 2016-04-20 | A kind of no potential barrier type filter and its application method and purposes |
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| Country | Link |
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| CN (1) | CN105771397B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167358A (en) * | 2017-07-11 | 2017-09-15 | 国家海洋局第三海洋研究所 | Suck-back Combined water spline filter system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000189719A (en) * | 1998-12-28 | 2000-07-11 | Mie Prefecture | Immersion type gravity filter and filtration method using the same |
| CN1357400A (en) * | 2000-12-07 | 2002-07-10 | 中国石油化工股份有限公司 | Filter |
| CN201850279U (en) * | 2010-10-30 | 2011-06-01 | 湖南省天骑医学新技术有限公司 | Liquid-based cell and bacteria sampler |
| CN202538506U (en) * | 2012-01-16 | 2012-11-21 | 北京大学 | Novel solid and liquid separation suction filtration device |
| CN204051142U (en) * | 2014-08-25 | 2014-12-31 | 陈士强 | Type of respiration sludge slurry enrichment facility |
-
2016
- 2016-04-20 CN CN201610252244.8A patent/CN105771397B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000189719A (en) * | 1998-12-28 | 2000-07-11 | Mie Prefecture | Immersion type gravity filter and filtration method using the same |
| CN1357400A (en) * | 2000-12-07 | 2002-07-10 | 中国石油化工股份有限公司 | Filter |
| CN201850279U (en) * | 2010-10-30 | 2011-06-01 | 湖南省天骑医学新技术有限公司 | Liquid-based cell and bacteria sampler |
| CN202538506U (en) * | 2012-01-16 | 2012-11-21 | 北京大学 | Novel solid and liquid separation suction filtration device |
| CN204051142U (en) * | 2014-08-25 | 2014-12-31 | 陈士强 | Type of respiration sludge slurry enrichment facility |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167358A (en) * | 2017-07-11 | 2017-09-15 | 国家海洋局第三海洋研究所 | Suck-back Combined water spline filter system |
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| CN105771397B (en) | 2018-09-21 |
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Inventor after: Wang Chengke Inventor after: He Anqi Inventor after: Xu Yizhuang Inventor before: He Anqi Inventor before: Xu Yizhuang |
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