CN108489767A - A kind of the filtrate extraction element and method of filtering with microporous membrane - Google Patents
A kind of the filtrate extraction element and method of filtering with microporous membrane Download PDFInfo
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- CN108489767A CN108489767A CN201810460614.6A CN201810460614A CN108489767A CN 108489767 A CN108489767 A CN 108489767A CN 201810460614 A CN201810460614 A CN 201810460614A CN 108489767 A CN108489767 A CN 108489767A
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- Prior art keywords
- filtrate
- sample
- bottle
- filtering
- npb
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
Abstract
The present invention relates to a kind of filtrate extraction elements of filtering with microporous membrane, it includes the micro filtrate returnable bottles of NPB and bottle stopper, the micro filtrate returnable bottles of the NPB are fixed in filtering flask, the bottle mouth position of the filtering flask is connected with worry base, the vacuum pump that draws water is connected with by hose on the side of the worry base, the top of the worry base is connected with the bottom end of sample bottle, and miillpore filter is provided between the worry base and sample bottle；A kind of filtrate extracting method of filtering with microporous membrane, it includes the following steps：Sample is poured into sample bottle；Opening is drawn water vacuum pump so that the sample in sample bottle is extracted after filtering with microporous membrane to the micro filtrate returnable bottles of NPB；The sample filtration of sample bottle finishes, and closes the vacuum pump that draws water；Pipe clamp is unclamped, sample bottle and filter base is separated, takes away miillpore filter；The micro filtrate returnable bottles of NPB are taken out, are preserved on bottle stopper, filtrate information is recorded；Extraction effect of the present invention is good, good, apparatus simplified, easy to operate without secondary transferring, sample adaptability.
Description
Technical field
The invention belongs to the check analyses technical fields such as water conservancy, environment, medical treatment, industry, and in particular to a kind of miillpore filter
The filtrate extraction element and method of filtering.
Background technology
It in the check analyses such as water conservancy, environment, medical treatment, industry field, generally requires to recycle filtrate, in order to examine
Analysis uses, by taking deposit release experiment as an example, in order to analyze the pollution releasability of deposit, it is often necessary to design 1:5 water
The simulated experiment of native ratio detects the sediment pollution releasability under different operating modes by extracting filtrate, and usually add
Overlying water content is in 10-50ml or so, in order to obtain representative sample, need to usually be extracted through centrifugation, filtering with microporous membrane,
For the filtrate content of recycling usually in 8-48ml or so, content is relatively low, and different samples its Sample storage also has different need
It asks, filtrate recovery method/device common at present is mainly common funnel, cloth funnel, injecting type filter, vacuum filter system
System, wherein common funnel and cloth funnel are for the larger filter membrane of filter sizes（>0.45um）Effect is preferable, but for
0.45um and its miillpore filter below, since it leans on gravity by micro porous filtration, effect is poor, and the easy blocking of filtrate is micro-
Hole so that filtering is then difficult to carry out, and injecting type filter is that miillpore filter is placed on inside syringe, by manually pushing
Syringe extracts filtrate, and this method spent time is long, and is susceptible to the broken situation of filter membrane, or even wastes and test
The sample to be filtered gone out, vacuum filtering system create negative pressure to promote membrane filtration, filtrate that can then recycle by vacuum pump
In filtrate bottle, for a large amount of filtrate（200ml-2L）Extraction has preferable effect, but the micro filtrate of 10-50ml is carried
It takes, is difficult to ensure its extraction accuracy, this is because generally requiring rinse when cleaning filtering flask, at this time filtering flask inevitably can
Remaining cleaning fluid, it is assumed that only leaving 1ml cleaning solutions, this is also to be difficult to receive for the extraction of micro filtrate, even if in addition, examination
It also needs in addition be transferred to sample bottle after spline filter to filtrate bottle, at this time inevitably has filtrate residual so that the sample rate of recovery
It is lower, or even the requirement of detection and analysis cannot be met, and also the secondary transferring of filtrate is also possible to that filtrate, to sum up, mesh can be polluted
It is preceding for micro filtrate（10-50ml）Extraction, high efficiency extraction, without transfer preservation in terms of it is also to be studied；Therefore it provides one
Kind of extraction effect is good, without secondary transferring, the filtrate of good, apparatus simplified, the easy to operate filtering with microporous membrane of sample adaptability
Extraction element is very important with method.
Invention content
The purpose of the invention is to overcome the deficiencies in the prior art, and provide a kind of extraction effect it is good, be not necessarily to secondary turn
It moves, the filtrate extraction element of good, apparatus simplified, the easy to operate filtering with microporous membrane of sample adaptability.
The object of the present invention is achieved like this：A kind of filtrate extraction element of filtering with microporous membrane, it includes NPB micro
Filtrate returnable bottle and bottle stopper, the micro filtrate returnable bottles of the NPB are fixed in filtering flask, and the bottle mouth position of the filtering flask connects
It is connected to worry base, the vacuum pump that draws water, the top of the worry base and sample bottle is connected with by hose on the side of the worry base
Bottom end be connected, be provided with miillpore filter between the worry base and sample bottle.
Scale value, the micro filtrate returnable bottles of the NPB are provided on the lateral surface of the micro filtrate returnable bottles of the NPB
Lateral surface on the side of scale value is provided with blank tag.
Position on the side of the micro filtrate returnable bottles of the NPB close to top is provided with through-hole.
It is fixedly connected by pipe clamp between the worry base and sample bottle.
It is provided with annular lug on lateral surface at the top of the micro filtrate returnable bottles of the NPB.
A kind of filtrate extracting method of filtering with microporous membrane, it includes the following steps：
Step 1：The micro filtrate returnable bottles of NPB are fixed in filtering flask, then will filter bottle mouth position of the base sleeve in filtering flask, then will
Sample bottle is placed on filter base, and the miillpore filter after being moistened with water is placed on and is considered between base and sample bottle, will be tried with pipe clamp
Sample bottle is fixed with filter base, and the vacuum pump that will draw water later is attached with filter base with hose；
Step 2：Sample is poured into sample bottle；
Step 3：Opening is drawn water vacuum pump so that the sample in sample bottle is extracted after filtering with microporous membrane to the micro filtrates of NPB
Returnable bottle；
Step 4：The sample filtration of sample bottle finishes, and closes the vacuum pump that draws water；
Step 5：Pipe clamp is unclamped, sample bottle and filter base is separated, takes away miillpore filter；
Step 6：The micro filtrate returnable bottles of NPB are taken out, are preserved on bottle stopper, filtrate information is recorded, preserve filtrate with to be analyzed；
Step 7：Regular to put each component, so far individual sample filtrate extraction terminates；
Step 8：Above step is repeated, next sample is extracted.
Beneficial effects of the present invention：The present invention is operated in filtering flask by the vacuum pump that draws water and forms negative pressure, to micro-
Hole filter membrane both sides form pressure difference, and then improve sample filtration efficiency, and filtered filtrate is then stored directly in NPB（Negative pressure is flat
Weighing apparatus）In micro filtrate returnable bottle, can directly it be preserved after filtering in this way, without carrying out secondary transferring to sample, for
The more situation of sample, extra sample can be spilled over in filtering flask through through-hole on the micro filtrate returnable bottles of NPB and be collected；It is logical
The pressure port for the vacuum pump that draws water crossed in the application can connect more sets filtering devices simultaneously, to further increase filter efficiency；
The present invention is in NPB（Negative-pressure balancing）Micro filtrate returnable bottle top design has annular lug, can be used for being fixed on filtering flask
On bottleneck, NPB（Negative-pressure balancing）On the side of micro filtrate returnable bottle as needed can 5ml, 10ml, 15ml, 20ml,
25ml ... 50ml etc. open two apertures, for accurately measuring filtrate content, while can also be formed with filtering flask and be connected to sky
Between so that pressure balance may be implemented in the negative pressure space for drawing water vacuum pump formation, to ensure that the micro filtrate returnable bottles of NPB exist
Unlikely damage under condition of negative pressure, the micro filtrate returnable bottles of NPB are designed with scale to measure filtrate volume, in the another of scale on the outside
It is designed with blank tag on one side, is required for marking filtrate information, while according to the difference of sample, glass, plastics may be used
The different colours such as unlike materials and transparent, brown, black are waited to reach the preservation demand of various sample；Bottle stopper is for trying
Sample uses plastics and blocks into sealing to the micro filtrate returnable bottles of NPB after extracting for glass material using ground bottle stopper
Lid formula bottle stopper；The micro filtrate returnable bottles of NPB are all directly preserved directly as sample bottle after filtering every time, avoid secondary turn of sample
It moves；According to experiment needs, miillpore filter can select the filter membrane of the unlike materials such as glass fiber filter, acetate fiber filter membrane,
The filter membrane that different pore size may be selected carries out the extraction of sample filtrate；NPB in the present invention（Negative-pressure balancing）Micro filtrate returnable bottle
The purpose that can be extracted and preserve without transfer using micro filtrate is realized, avoids residual liquid and secondary transferring band
The sample filtrate contamination come；The present invention is poor using filter membrane pressure at both sides, fast filtering may be implemented, and can be carried out at the same time more
Group filtering, to improve the efficiency of sample filtration, it is convenient to be provided for the check analyses such as water conservancy, environment, medical treatment, industry field
Method；Total, the present invention has extraction effect good, good, apparatus simplified, easy to operate without secondary transferring, sample adaptability
Advantage.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the filtrate extraction element of filtering with microporous membrane of the present invention.
Fig. 2 is the micro filtrate returnable bottles of NPB and its bottle stopper in a kind of filtrate extraction element of filtering with microporous membrane of the present invention
Structural schematic diagram.
In figure：1, the micro filtrate returnable bottles 2 of NPB, filtering flask 3, worry base 4, miillpore filter 5, sample bottle 6, pipe clamp
7, hose 8, the vacuum pump 9 that draws water, annular lug 10, through-hole 11, blank tag 12, scale value 13, bottle stopper.
Specific implementation mode
Following further describes the present invention with reference to the drawings.
Embodiment 1
As depicted in figs. 1 and 2, the filtrate extraction element of a kind of filtering with microporous membrane, it includes micro 1 Hes of filtrate returnable bottle of NPB
Bottle stopper 13, the micro filtrate returnable bottles of the NPB 1 are fixed in filtering flask 2, and the bottle mouth position of the filtering flask 2 is connected with worry
Base 3 is connected with the vacuum pump 8 that draws water, the top of the worry base 3 and sample bottle 5 on the side of the worry base 3 by hose 7
Bottom end be connected, be provided with miillpore filter 4 between the worry base 3 and sample bottle 5.
A kind of filtrate extracting method of filtering with microporous membrane, it includes the following steps：
Step 1：The micro filtrate returnable bottles of NPB 1 are fixed in filtering flask 2, then base 3 will be filtered and be sleeved on the bottle mouth position of filtering flask 2,
Sample bottle 5 is placed on filter base 3 again, and the miillpore filter 4 after being moistened with water is placed on and is considered between base 3 and sample bottle 5, is used
Sample bottle 5 and filter base 3 are fixed pipe clamp 6, and the vacuum pump 8 that will draw water later is attached with the filter hose 7 of base 3；
Step 2：Sample is poured into sample bottle 5；
Step 3：Opening is drawn water vacuum pump 8 so that sample in sample bottle 5 after the filtering of miillpore filter 4 extraction to the micro filters of NPB
Liquid returnable bottle 1；
Step 4：The sample filtration of sample bottle 5 finishes, and closes the vacuum pump 8 that draws water；
Step 5：Pipe clamp 6 is unclamped, sample bottle 5 and filter base 3 is separated, takes away miillpore filter 4；
Step 6：The micro filtrate returnable bottles 1 of NPB are taken out, preservations is covered with bottle stopper 13, record filtrate information, preservation filtrate is to wait for point
Analysis；
Step 7：Regular to put each component, so far individual sample filtrate extraction terminates；
Step 8：Above step is repeated, next sample is extracted.
The present invention is operated in filtering flask by the vacuum pump that draws water and forms negative pressure, to form pressure in miillpore filter both sides
Difference, and then sample filtration efficiency is improved, filtered filtrate is then stored directly in NPB（Negative-pressure balancing）Micro filtrate returnable bottle
It is interior, it can directly be preserved after filtering in this way, without carrying out secondary transferring to sample；Pass through the vacuum of drawing water in the application
The pressure port of pump can connect more sets filtering devices simultaneously, to further increase filter efficiency；It is required according to the difference of sample, this
NPB in invention（Negative-pressure balancing）Micro filtrate returnable bottle may be used the unlike materials such as glass, plastics and transparent, brown,
The different colours such as black reach the preservation demand of various sample；Bottle stopper is used for after sample extracts to the micro filtrates of NPB
Returnable bottle uses ground bottle stopper into sealing, for glass material, and pressed cover bottle stopper is used for plastics；The micro filtrate recycling of NPB
Bottle is all directly preserved directly as sample bottle after filtering every time, avoids the secondary transferring of sample；According to experiment needs, miillpore filter
The filter membrane of the unlike materials such as glass fiber filter, acetate fiber filter membrane can be selected, the filter membrane that different pore size also may be selected carries out
The extraction of sample filtrate；NPB in the present invention（Negative-pressure balancing）The use of micro filtrate returnable bottle realizes micro filtrate without turning
The purpose that can be extracted and preserve is moved, the sample filtrate contamination that residual liquid is brought with secondary transferring is avoided；Total, this
Invention has the advantages that extraction effect is good, good, apparatus simplified, easy to operate without secondary transferring, sample adaptability.
Embodiment 2
As depicted in figs. 1 and 2, the filtrate extraction element of a kind of filtering with microporous membrane, it includes micro 1 Hes of filtrate returnable bottle of NPB
Bottle stopper 13, the micro filtrate returnable bottles of the NPB 1 are fixed in filtering flask 2, and the bottle mouth position of the filtering flask 2 is connected with worry
Base 3 is connected with the vacuum pump 8 that draws water, the top of the worry base 3 and sample bottle 5 on the side of the worry base 3 by hose 7
Bottom end be connected, be provided with miillpore filter 4 between the worry base 3 and sample bottle 5；The micro filtrate returnable bottles of the NPB 1
It is provided with scale value 12 on lateral surface, is arranged away from the side of scale value on the lateral surface of the micro filtrate returnable bottles of the NPB 1
There is blank tag 11；Position on the side of the micro filtrate returnable bottles of the NPB 1 close to top is provided with through-hole 10；It is described
Worry base 3 and sample bottle 5 between be fixedly connected by pipe clamp 6；The outside at micro 1 tops of filtrate returnable bottle the NPB
Annular lug 9 is provided on face.
A kind of filtrate extracting method of filtering with microporous membrane, it includes the following steps：
Step 1：The micro filtrate returnable bottles of NPB 1 are fixed in filtering flask 2, then base 3 will be filtered and be sleeved on the bottle mouth position of filtering flask 2,
Sample bottle 5 is placed on filter base 3 again, and the miillpore filter 4 after being moistened with water is placed on and is considered between base 3 and sample bottle 5, is used
Sample bottle 5 and filter base 3 are fixed pipe clamp 6, and the vacuum pump 8 that will draw water later is attached with the filter hose 7 of base 3；
Step 2：Sample is poured into sample bottle 5；
Step 3：Opening is drawn water vacuum pump 8 so that sample in sample bottle 5 after the filtering of miillpore filter 4 extraction to the micro filters of NPB
Liquid returnable bottle 1；
Step 4：The sample filtration of sample bottle 5 finishes, and closes the vacuum pump 8 that draws water；
Step 5：Pipe clamp 6 is unclamped, sample bottle 5 and filter base 3 is separated, takes away miillpore filter 4；
Step 6：The micro filtrate returnable bottles 1 of NPB are taken out, preservations is covered with bottle stopper 13, record filtrate information, preservation filtrate is to wait for point
Analysis；
Step 7：Regular to put each component, so far individual sample filtrate extraction terminates；
Step 8：Above step is repeated, next sample is extracted.
The present invention is operated in filtering flask by the vacuum pump that draws water and forms negative pressure, to form pressure in miillpore filter both sides
Difference, and then sample filtration efficiency is improved, filtered filtrate is then stored directly in NPB（Negative-pressure balancing）Micro filtrate returnable bottle
It is interior, it can directly be preserved after filtering in this way, it is more in the case of sample is more without carrying out secondary transferring to sample
Remaining sample can be spilled over in filtering flask through through-hole on the micro filtrate returnable bottles of NPB and be collected；Pass through drawing water in the application
The pressure port of vacuum pump can connect more sets filtering devices simultaneously, to further increase filter efficiency；The present invention is in NPB（Negative pressure
Balance）Micro filtrate returnable bottle top design has annular lug, can be used for being fixed on the bottleneck of filtering flask, NPB（Negative pressure
Balance）As needed can be in 5ml, 10ml, 15ml, 20ml, 25ml on the side of micro filtrate returnable bottle ... 50ml etc. is opened
Two apertures for accurately measuring filtrate content, while can also form connected space so that in vacuum of drawing water with filtering flask
It pumps in the negative pressure space formed and pressure balance may be implemented, to ensure the micro filtrate returnable bottles of NPB unlikely damage under condition of negative pressure
Bad, the micro filtrate returnable bottles of NPB are designed with scale to measure filtrate volume on the outside, and blank mark is designed in the another side of scale
Label require for marking filtrate information, while according to the difference of sample, the unlike materials such as glass, plastics, Yi Jitou may be used
The different colours such as bright, brown, black reach the preservation demand of various sample；Bottle stopper is used for after sample extracts to NPB
Micro filtrate returnable bottle uses ground bottle stopper into sealing, for glass material, and pressed cover bottle stopper is used for plastics；NPB is micro
Filtrate returnable bottle is all directly preserved directly as sample bottle after filtering every time, avoids the secondary transferring of sample；According to experiment needs,
Miillpore filter can select the filter membrane of the unlike materials such as glass fiber filter, acetate fiber filter membrane, and different pore size also may be selected
Filter membrane carries out the extraction of sample filtrate；NPB in the present invention（Negative-pressure balancing）The use of micro filtrate returnable bottle realizes micro filter
It is dirty to avoid the sample filtrate that residual liquid is brought with secondary transferring for the purpose that liquid can be extracted and be preserved without transfer
Dye；The present invention is poor using filter membrane pressure at both sides, fast filtering may be implemented, and can be carried out at the same time multigroup filtering, to carry
The efficiency for having risen sample filtration provides convenient method for the check analyses such as water conservancy, environment, medical treatment, industry field；Total, this
Invention has the advantages that extraction effect is good, good, apparatus simplified, easy to operate without secondary transferring, sample adaptability.
Claims (6)
1. a kind of filtrate extraction element of filtering with microporous membrane, it includes that the micro filtrate returnable bottles of NPB and bottle stopper, feature exist
In：The micro filtrate returnable bottles of the NPB are fixed in filtering flask, and the bottle mouth position of the filtering flask is connected with worry base, described
Worry base side on the vacuum pump that draws water is connected with by hose, the top of the worry base is connected with the bottom end of sample bottle, institute
It is provided with miillpore filter between the worry base stated and sample bottle.
2. a kind of filtrate extraction element of filtering with microporous membrane according to claim 1, it is characterised in that：The NPB
It is provided with scale value on the lateral surface of micro filtrate returnable bottle, deviates from the lateral surface of the micro filtrate returnable bottles of the NPB and carves
The side of angle value is provided with blank tag.
3. a kind of filtrate extraction element of filtering with microporous membrane according to claim 1, it is characterised in that：The NPB
Position on the side of micro filtrate returnable bottle close to top is provided with through-hole.
4. a kind of filtrate extraction element of filtering with microporous membrane according to claim 1, it is characterised in that：The worry base
It is fixedly connected by pipe clamp between sample bottle.
5. a kind of filtrate extraction element of filtering with microporous membrane according to claim 1, it is characterised in that：The NPB
It is provided with annular lug on lateral surface at the top of micro filtrate returnable bottle.
6. a kind of filtrate extracting method of filtering with microporous membrane as described in claim 1, it is characterised in that：It includes following step
Suddenly：
Step 1：The micro filtrate returnable bottles of NPB are fixed in filtering flask, then will filter bottle mouth position of the base sleeve in filtering flask, then will
Sample bottle is placed on filter base, and the miillpore filter after being moistened with water is placed on and is considered between base and sample bottle, will be tried with pipe clamp
Sample bottle is fixed with filter base, and the vacuum pump that will draw water later is attached with filter base with hose；
Step 2：Sample is poured into sample bottle；
Step 3：Opening is drawn water vacuum pump so that the sample in sample bottle is extracted after filtering with microporous membrane to the micro filtrates of NPB
Returnable bottle；
Step 4：The sample filtration of sample bottle finishes, and closes the vacuum pump that draws water；
Step 5：Pipe clamp is unclamped, sample bottle and filter base is separated, takes away miillpore filter；
Step 6：The micro filtrate returnable bottles of NPB are taken out, are preserved on bottle stopper, filtrate information is recorded, preserve filtrate with to be analyzed；
Step 7：Regular to put each component, so far individual sample filtrate extraction terminates；
Step 8：Above step is repeated, next sample is extracted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810460614.6A CN108489767A (en) | 2018-05-15 | 2018-05-15 | A kind of the filtrate extraction element and method of filtering with microporous membrane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810460614.6A CN108489767A (en) | 2018-05-15 | 2018-05-15 | A kind of the filtrate extraction element and method of filtering with microporous membrane |
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| Publication Number | Publication Date |
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| CN108489767A true CN108489767A (en) | 2018-09-04 |
Family
ID=63352836
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| CN201810460614.6A Pending CN108489767A (en) | 2018-05-15 | 2018-05-15 | A kind of the filtrate extraction element and method of filtering with microporous membrane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112717513A (en) * | 2020-12-23 | 2021-04-30 | 广东产品质量监督检验研究院（国家质量技术监督局广州电气安全检验所、广东省试验认证研究院、华安实验室） | Centrifuging tube suction filter device |
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| WO1986001728A2 (en) * | 1984-09-07 | 1986-03-27 | Wolfgang Wagner | Injection device with sensor |
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