CN105771397B - A kind of no potential barrier type filter and its application method and purposes - Google Patents
A kind of no potential barrier type filter and its application method and purposes Download PDFInfo
- Publication number
- CN105771397B CN105771397B CN201610252244.8A CN201610252244A CN105771397B CN 105771397 B CN105771397 B CN 105771397B CN 201610252244 A CN201610252244 A CN 201610252244A CN 105771397 B CN105771397 B CN 105771397B
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- filter
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- liquid reservoir
- vacuum
- solidliquid mixture
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005036 potential barrier Methods 0.000 title claims abstract description 11
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- 239000000203 mixture Substances 0.000 claims abstract description 37
- 238000001914 filtration Methods 0.000 claims abstract description 34
- 230000005484 gravity Effects 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims description 26
- 239000000706 filtrate Substances 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 13
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000004744 fabric Substances 0.000 description 20
- 239000012528 membrane Substances 0.000 description 7
- 238000000967 suction filtration Methods 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
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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
- 238000004140 cleaning Methods 0.000 description 2
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- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Chemical compound OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
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 present invention relates to a kind of novel no potential barrier type filters, filtering head and liquid reservoir are merged into a single whole, filter medium is used 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 liquid reservoir, it is avoided in filtering using vertical catheter, therefore, liquid components need not overcome gravity potential barrier caused by vertical conduit and be directly entered liquid reservoir again；Further, since negative pressure caused by vacuum in filter process, the liquid isolated will not flow back into solidliquid mixture so that this filter tool in the big solidliquid mixture of separation liquid viscosity has great advantage.
Description
Technical field
The present invention relates to a kind of filter, more particularly to a kind of solidliquid mixture larger for viscosity is detached
Filter.
Background technology
Filtering is the general name of a major class unit operation.The process for being purified fluid purification by special device, the side of filtering
There are many formula, and also very extensively, solid-liquid, solid-gas, bulky grain, little particle are typical for the object system used.
Filtering is the liquid in motive force or other outer force effect low suspension liquid (or the gas that generates heat containing solid particle)
(or gas) penetrates medium, and solid particle and other substances are retained by filter medium, to make solid and other substances and liquid
The operation of (or gas) separation.
Suction filtration is exactly to be filtered under diminished pressure.So that the pressure in bottle,suction is reduced using aspiration pump, achievees the purpose that separation of solid and liquid.Often
The device seen has vacuum pump, Buchner funnel, bottle,suction, sebific duct, filter paper (filter cloth or filter membrane) etc..Common mode is to utilize vacuum
Pump makes air pressure in bottle,suction reduce, and liquid to be separated passes sequentially through filter paper and Buchner funnel, since gravity enters bottle,suction
In, solid stays on filter paper.
But there are disadvantages for this traditional approach.Due to gravity, liquid to be separated can be along filter paper and Buchner funnel gap
Into bottle,suction, leads to leakage filter phenomenon, pollute filtrate.And filter residue easily blocks filter paper, causes follow-up suction filtration not smooth, or even resistance
Hinder follow-up suction filtration.If the liquid after filtering and heating, filtrate is easy solidification when falling into bottle,suction, and fiber crops are caused to the taking-up of filtrate
It is tired.These can all influence to filter efficiency and result.
Based on this, when laboratory is filtered, in order to make up the deficiency of Buchner funnel to a certain extent, the prior art is public
A kind of filter is opened, such as filter disclosed in CN201220017405 (CN202538506U) swims in solidliquid mixture
Upper surface, sediment under the effect of gravity, gradually sink to solidliquid mixture lower layer, this makes the upper layer of solidliquid mixture become heavy
The seldom clear liquid of starch content.In filter process, filter under vacuum clear liquid by filter cloth from solidliquid mixture
Upper surface extraction.Since the most of the time of filtering is to cross cleaner liquid, this makes clogging deposits filter cloth cause filtering tired
Difficult problem is greatly alleviated, to improve the efficiency of filtering to a certain extent.
Above-mentioned filter obtains solid constituent when can be used for detaching a large amount of solidliquid mixtures.But due to filtering head and liquid reservoir
It is separation, and the pipeline of transports liquid component is long, material is rubber or plastics, this makes the contaminated risk of liquid component
It increases, and easily causes the loss of liquid component.Although rubber or plastic conduit can not will be had to when liquid is defeated, to avoid liquid
Component is contaminated, or shortens to a certain extent by the catheter length of transports liquid component, is being filtered to reduce liquid components
It loses in the process, but still there are following disadvantages：A woven hose vertically upward, the liquid being separated by filtration out are used in filter
Body needs gravity barrier layer produced by overcoming vertical conduit that could enter liquid reservoir；In addition, when using this filter to detach liquid
When the big solidliquid mixture of viscosity, it is possible to because collect makes filtering fail less than liquid components.
Invention content
In order to overcome the above-mentioned problems in the prior art, the present invention provides a kind of filter, by filtering head with
Liquid reservoir merges into a single whole, and filter medium is used in the bottom of filter, and in filter process, filter swims in solid-liquid mixing
The surface of object, under the negative pressure of vacuum, liquid enters in the liquid reservoir of filter, is avoided in filtering and uses vertical drain
Pipe, therefore, liquid components need not overcome gravity potential barrier caused by vertical conduit and be directly entered liquid reservoir again；It was filtering
Solid and liquid counter motion in journey, and then achieve the purpose that the liquid by the solid sediment of lower section and top separates；This
Outside, due to negative pressure caused by vacuum in filter process, the liquid isolated will not flow back into solidliquid mixture so that this
Filter tool in the big solidliquid mixture of separation liquid viscosity has great advantage, so as to complete the present invention.
For this purpose, the present invention provides a kind of filter, including sealing-plug 1 and liquid reservoir 2, wherein the filter is to fall
Formula is set, the preferably described liquid reservoir 2 is cylinder, and bottom carries aperture 4；The filter further includes vacuum line 3, is had in bottom
Filter medium 5.
The present invention also provides the application methods of above-mentioned filter, include 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, preferably connects vacuum pump and opens vacuum pump；
3, liquid components are flowed by filter medium 5 and aperture 4 in liquid reservoir 2, become filtrate 7, are realized and are separated by solid-liquid separation.
Filter provided by the invention can effectively realize separation of solid and liquid, and show following advantage：
(1) filtering head and liquid reservoir are merged into a single whole, is avoided in filtering and uses vertical catheter and sebific duct, because
This, liquid components need not overcome gravity potential barrier caused by vertical conduit and be directly entered liquid reservoir again, avoid filtrate and exist
The problem of being detained in pipeline, losing, also solve the problems, such as that filtrate is polluted by sebific duct；
(2) in filter operation, filtrate is stored in the filter, and filter is suspended in solidliquid mixture, in this way may be used
To keep the temperature filtrate using the waste heat of the solidliquid mixture of heat, to avoid declining because of temperature, cause to decline with temperature in filtrate
And the solute that solubility reduces is precipitated in filter process；
(3) solid and liquid counter motion, liquid are taken away from above by vacuum during suction filtration, and solid is made by gravity
It is still stayed in a reservoir, thus is significantly reduced because of clogging deposits filter medium such as filter paper, filter cloth, filter core or filter with most of
Film and cause filter efficiency decline problem；
(4) it is filtered, in washing process to precipitation, there is no deposit is transferred to funnel from original container
In, then the process that is transferred out from funnel.Solid matter caused by reduce precipitation due to transfer loses, and operates
Journey is time saving, laborsaving；
(5) it blocks, but can simply be cleared up even if filter medium is deposited, for example funnel is taken out, by filter paper, filter
Sediment undergoes washing on the filter media surfaces such as cloth, filter core or filter membrane is clean, or replaces filter medium, then can be continuing with；
(6) nutsch filter floatability declines during suction filtration with the reduction of liquid level automatically on liquid level.Make whole operation
Process can be automatically performed；In addition, due to negative pressure caused by vacuum in filter process, the liquid isolated will not flow back into solid
In liquid mixture so that this filter tool in the big solidliquid mixture of separation liquid viscosity has great advantage.
Description of the drawings
Fig. 1 is the structural schematic diagram of the filter of the present invention, wherein：1- sealing-plugs, 2- liquid reservoirs, 3- vacuum lines, 4-
Aperture, 5- filter mediums, 6- solidliquid mixtures, 7- filtrates.
Specific implementation mode
By specific implementation mode, the present invention is described in detail below in conjunction with the accompanying drawings.The features and advantages of the invention will
As these descriptions become more apparent from, clearly.
According to a kind of embodiment, the present invention provides a kind of filter, including sealing-plug 1 and liquid reservoir 2, wherein
The filter is inversion type, and the preferably described liquid reservoir 2 is cylinder.
According to the present invention, the sealing-plug 1 is located at the top of cylinder, can be individually covering at the top of cylinder, reach close
Envelope, such as whole plug are covered at the top of cylinder, can also be sealed together with rest part at the top of cylinder, such as cylinder
It is molded together with vertical outer wall at the top of body, and there are diameters between 1 centimetre -1 decimeter, preferably 3 centimetres -8 centimetres, more preferable 4
Centimetres -6 centimetres of consent, for accommodating sealing-plug 1.
According to the present invention, which further includes vacuum line 3, which runs through the consent of sealing-plug 1, passes through
The vacuum line 3 is connect with vacuum pump or vacuum system, and realization vacuumizes filter.
Vacuum line 3 of the present invention can be any tube, it is preferred to use glass tube, be directly connected to vacuum pump or
Vacuum system, or connect with vacuum pump or vacuum system by hose.
The bottom of liquid reservoir 2 of the present invention carries aperture 4, preferably carries multiple apertures 4,4 diameter phase of the aperture
Same or different, preferably diameter is identical, a diameter of 0.01-0.2mm of the more preferable aperture.
According to the present invention, the filter has filter medium 5, filter medium 5 of the invention in bottom to be filtered in operation
To intercept solid particle contained by fluid and with supporting role various porous materials.Common filter medium has following several
Class：
1. braided material, filter cloth and strainer made of the braidings such as naturally occurring or synthetic fiber, wire, are in industrial production
Most common filter medium.Such material price is cheap, and cleaning and replacement are convenient, and the minimum grain size that can be retained is 5~65 μm.With
Single thread strainer, homogeneous, corrosion-resistant, endurance made of the fibers such as polyamide, polyester or polypropylene gradually replace it
His fabric filter cloth；
2. porous solid, including bique, sintering metal or glass, or the porous plastic made of plastics fine powder bonding
Pipe etc..The minimum grain size that such material can retain is 1~3 μm, is usually used in suspension of the processing containing a small amount of molecule；
3. accumulation medium, such as sand, gravel, charcoal and the non-woven fibers such as diatomite granular material or mineral wool
Stack layer.It is generally used for the seldom suspension of processing solid content, such as city water and liquid glucose to be clean.
In addition, industrial filter paper can also be shared with above-mentioned filter medium, to intercept a small amount of subparticle in suspension.In recent years
Come, manufacture and the application of high-molecular porous film grow a lot, and are applied to the filtering of more small particle, are clarified with obtaining height
Liquid.Film suitable for filtering off 0.1~1 μm of particle is known as miillpore filter；Film suitable for filtering off 0.01~0.1 μm of particle claims
For ultrafiltration membrane.It is industrial that miillpore filter and ultrafiltration membrane are widely used in medicine, food and biochemistry etc..
Present invention preferably uses filter medium have filter paper, filter cloth, filter core or filter membrane.
According to the present invention it is possible to using the modes such as tying up, the filter mediums such as filter paper or filter cloth are wrapped up to the bottom of liquid reservoir 2
And tie up fixation so that filter medium is not fallen off when filter is inverted；Filter medium 5 can also be layed in 2 bottom of liquid reservoir,
It is optionally bonded, i.e., filter medium such as filtering sand core is sticked to 2 bottom (upper surface of liquid reservoir by stickums such as adhesives
Or lower surface).
In the preferred embodiment of the present invention, can also be filter be arranged buoy, the buoy be itself and
The object that filter together can float on liquid level is placed therewith.Under buoy effect, filter can float on
Liquid level, and liquid reservoir and the contact interface outer rim of filter medium such as filter paper, filter cloth, filter core or filter membrane is made to be higher than solid-liquid to be separated
Mixture liquid level, therefore it is possible to prevente effectively from leakage filter phenomenon.Here, leakage filter refers to sediment from liquid reservoir and filter paper, filter cloth, filter
The gap of the contact interface outer rim of the filter mediums such as core or filter membrane leaks through, and solid precipitation is caused to leak into filtrate.
According to the present invention, the filter is without catheter, 2 bottom of liquid reservoir and the formation of aperture 4 being provided with
Filtering head, so that liquid reservoir 2 is integrated with filtering head, the liquid components in the solidliquid mixture 6 to be filtered do not need
Overcome gravity potential barrier caused by catheter and be directly entered liquid reservoir 2, becomes filtrate 7.
As it can be seen that the filter of the present invention is still a kind of inversion type filter, in filter process, filter swims in solid-liquid
The surface of mixture, under the negative pressure of vacuum, liquid enters filter by filter cloth, filter paper or after using filtering sand core.With it is existing
There is the filter of technology to compare, the maximum feature of this filter is that do not have vertical catheter in filtering.Therefore, lead to
Filter cloth, filter paper or the liquid components using filtering sand core need not overcome gravity potential barrier caused by vertical conduit and direct again
Into liquid reservoir.This makes this filter in the big solidliquid mixture of separation liquid viscosity with certain advantage.
Although in addition, it is necessary to, it is noted that liquid reservoir directly below with the filter cloth of aperture and filtering on filter, filter paper or make
It is in contact with filter sand core, but due to negative pressure caused by vacuum in filter process, the solid-liquid mixing isolated will not flow back into
In solidliquid mixture.
The present invention also provides the application methods of above-mentioned filter, include the following steps：
Step 1：Filter is placed in solidliquid mixture 6 to be separated, due to itself floating or the buoy being optionally arranged
Effect, which will smoothly float on liquid level；
Step 2：Vacuum line 3 connects vacuum, preferably connects vacuum pump and opens vacuum pump；
Step 3：Liquid components are flowed by filter medium 5 and aperture 4 in liquid reservoir 2, and filtrate 7 is become, and solid is general
Container bottom is sink to due to gravity, final realize is separated by solid-liquid separation.
In step 3, under the negative pressure of vacuum, the liquid components in the solidliquid mixture 6 to be filtered need not overcome weight
Power potential barrier and be directly entered liquid reservoir 2；Meanwhile under the negative pressure of vacuum, filtrate 7 will not flow back into solidliquid mixture 6.
And vacuum extractor disclosed in the prior art (such as CN201220017405) generally comprises conduit, fluid reservoir and true
Empty set is united, and fluid reservoir is located at before vacuum system, is closed other than two conduits, and a conduit is connect with vacuum system,
The upward outlet connection of the funnel of another conduit and nutsch filter.And conduit and hopper outlet are directly connected to or in succession
When connecing, and being directly connected to, it is directly connected to flexible conduit and the matched hopper outlet of bore, is then utilized when being indirectly connected with
The connecting components such as air exhaust nozzle, glass tube, rubber tube, plastic tube, rubber plug, the adapter glass of conventional suction bottle are attached.For just
In suction filtration, the air exhaust nozzle of the inclined-plane of hopper outlet towards suction bottle.
Nutsch filter according to the present invention serves many purposes, and can be used for being separated by filtration for a variety of solidliquid mixtures, these
Solidliquid mixture can also be the solid-liquid mixed liquor that chemical reaction is formed either the suspension that physical mixed is formed, such as anti-
Should during generate the reactant or by-product of precipitation form, can also be that is generated during industrial production or environmental improvement consolidates
Liquid mixture.It is preferred that it is 0.1-1600Pas that the solidliquid mixture, which has certain viscosity, its more preferable viscosity,.
It is more efficient in order to be separated by solid-liquid separation according to the present invention, preferably before operation vacuum system is detached, make solid-liquid
Mixture sufficient standing, to make solid matter be deposited in bottom as far as possible.
It,, can be to mistake if filter medium is blocked by the precipitation come up is aspirated on a small quantity after running a period of time according to the present invention
Filter medium carries out necessary flushing or cleaning, and the sediment on surface is cleared, then proceedes to use.
According to the present invention, in order to improve solid-liquid separation effect, in the later stage of suction filtration, stirred again with solid with certain quantity of fluid
It mixes mixing, after sufficient standing, continues to filter.
A small amount of solvent can be spread across on solid if filtered solid needs washing according to the present invention, stand a moment,
It is drained again, and carries out the drying process of other modes, such as further drying or with drier moisture absorption.
Fig. 1 is the structural schematic diagram of the filter of the present invention, wherein sealing-plug 1 is located at 2 top of liquid reservoir, vacuum line 3
It through the consent of sealing-plug 1, is connect with vacuum pump or vacuum system by sebific duct, the bottom of liquid reservoir 2 carries aperture 4, filtering
Fixation is simultaneously tied up in the bottom of medium 5 (being, for example, nylon filtering cloth) package liquid reservoir 2, is mixed when the filter is placed in solid-liquid to be separated
After closing in object 6 and opening and vacuumize, the liquid components in solidliquid mixture 6 are directly entered liquid reservoir 2, become filtrate 7, solid by
It is sink to container bottom in gravity, final realize is separated by solid-liquid separation.
Embodiment 1：
Aluminium-magnesium silicate powder is added in the paraffin oil with certain viscosity, and after aluminium-magnesium silicate powder drop, use is this
Filter carries out separation of solid and liquid operation, in an experiment, using fine denier nylon cloth as filter cloth cover in the bottom of filter, then
It is filtered.
The experimental results showed that in several minutes, as clear as crystal paraffin oil is filtered the liquid reservoir of device by filter cloth, real
Separation of solid and liquid is showed.After the completion of filtering, even if having removed the filter cloth on filter, under the negative pressure of vacuum, the stone as filtrate
Wax oil remains in liquid reservoir, will not be flowed out from the aperture of lower part.
Exemplary explanation has been carried out to the present invention above by preferred embodiment.But it is to be understood that,
These specific implementation modes are only the illustrative explanations to the present invention, do not constitute any restrictions to protection scope of the present invention,
Without departing from spirit of that invention and protection domain, those skilled in the art can to the technology of the present invention content and in fact
The mode of applying carries out various improvement, equivalencing or modification, these each fall in protection scope of the present invention.
Claims (6)
1. a kind of filter for being separated by filtration the solidliquid mixture with viscosity, including sealing-plug (1) and liquid reservoir (2),
It is characterized in that, the filter is inversion type, which has filter medium (5) in bottom,
The filter medium (5) is filtered in operation intercepting solid particle contained by fluid and various more with supporting role
Porous material,
The filter is provided with buoy,
The filter includes vacuum line (3), which runs through the consent of sealing-plug (1), passes through the vacuum line
(3) it is connect with vacuum pump or vacuum system, the vacuum line (3) is glass tube；
The sealing-plug (1) is located at the top of cylinder, can be individually covering at the top of cylinder, can also at the top of cylinder its
Remaining part point is sealed together；
The liquid reservoir (2) is cylinder,
Liquid reservoir (2) bottom carries multiple apertures (4), the filter without catheter, liquid reservoir (2) bottom and
The aperture (4) being provided with forms filtering head, so that liquid reservoir (2) is integrated with filtering head, aperture (4) diameter
It is identical；
Liquid components in the solidliquid mixture to be filtered (6) need not overcome gravity potential barrier caused by catheter and straight
It taps into liquid reservoir (2), becomes filtrate (7).
2. filter according to claim 1, which is characterized in that it is molded together with vertical outer wall at the top of cylinder, and there are
Diameter is between 1 centimetre -1 decimeter of consent.
3. filter according to claim 1, which is characterized in that
The bottom of filter medium (5) the package liquid reservoir (2) is layed in liquid reservoir (2) bottom.
4. the application method of the filter according to one of claims 1 to 3, includes the following steps：
1) filter is placed in solidliquid mixture to be separated (6), floats on liquid level；
2) vacuum line (3) connects vacuum, connects vacuum pump and opens vacuum pump；
3) liquid components are flowed by filter medium (5) and aperture (4) in liquid reservoir (2), become filtrate (7), realize solid-liquid point
From.
5. according to the method described in claim 4, it is characterized in that, in step 3, under the negative pressure of vacuum, the solid-liquid to be filtered
Liquid components in mixture (6) need not overcome gravity potential barrier and be directly entered liquid reservoir (2).
6. method according to claim 4 or 5, which is characterized in that in step 3, under the negative pressure of vacuum, filtrate (7) is no
It can flow back into solidliquid mixture (6).
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 CN105771397A (en) | 2016-07-20 |
| CN105771397B true CN105771397B (en) | 2018-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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| CN (1) | CN105771397B (en) |
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| 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 (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| 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 |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN105771397A (en) | 2016-07-20 |
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