CN2509578Y - Filtering film aperture measurer - Google Patents
Filtering film aperture measurer Download PDFInfo
- Publication number
- CN2509578Y CN2509578Y CN 01273638 CN01273638U CN2509578Y CN 2509578 Y CN2509578 Y CN 2509578Y CN 01273638 CN01273638 CN 01273638 CN 01273638 U CN01273638 U CN 01273638U CN 2509578 Y CN2509578 Y CN 2509578Y
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- CN
- China
- Prior art keywords
- gas
- casing
- air
- sieve tray
- filter membrane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a filtering film aperture measurer which has simple structure and convenient operation, comprising a casing that is provided with a pressure meter and a temperature meter; an air access pipeline is formed by an air intake, a control valve and an air discharging valve; the air access pipeline in the casing is provided with an air storing bottle with a two-way opening, and is covered b a sieve tray; a screw cover is sealed with the opening of the air storing bottle, and a testing pool is formed between the screw cover and the sieve tray. The utility model solves the puzzle of measuring the micropore filtering film aperture, thereby having a perfect application prospect.
Description
Technical field
The utility model relates to a kind of test instrument, specifically relates to a kind of testing tool that is used to measure the miillpore filter aperture.
Background technology
The method of measuring the miillpore filter aperture has discharge method, standard particle filtration method, scanning electron microscopy, bacterial filtration etc., its method or numerous tired or higher to equipment requirements.There is the bubble point pressure method of using HBechhold to measure the maximum diameter of hole of filter membrane at present, its principle is: gas will pass through the kapillary of full of liquid, must possess certain pressure to overcome fluid in the kapillary and the surface tension between the interface, if used liquid and film soak into fully, suppose that fenestra shape is the garden tubular, then have following relation between pore radius and the pressure:
R＝2δ/P
R-pore radius μ m
The surface tension N/m of δ-liquid
P-on-stream pressure Pa
According to the inverse relation that exists between pore radius and the on-stream pressure, the design test instrument is measured the aperture of miillpore filter.
Summary of the invention
The utility model is used the bubble point pressure method, has designed a kind of simple in structure, easy to operate filter membrane pore size determination instrument.
A kind of filter membrane pore size determination instrument comprises a casing, and casing is provided with tensimeter, thermometer, forms gas turnover pipeline by intake interface, operation valve and air release; Be provided with the gas cylinder of a band bilateral mouth in the casing in the gas turnover pipeline, be covered with sieve tray on the bottleneck; One blind nut and air storage bottleneck are tightly connected; Form a test pool between blind nut and the sieve tray.
Be provided with O-ring seals between air storage bottleneck and the sieve tray.
Before gas cylinder, also be provided with the surge flask of band bilateral mouth in the gas turnover pipeline.
Adopt the utility model to measure the filter membrane aperture, solved the difficult problem of miillpore filter pore size determination, have the following advantages: the maximum diameter of hole and the uniformity coefficient of (1) energy measurement filter membrane micropore can be observed the duck eye that naked eyes can not be found; (2) result is easy to observe; (3) running time weak point, speed is fast.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the utility model air storage bottleneck test pool structure enlarged diagram.
Embodiment
As Fig. 1, Fig. 2, the front end of the casing 1 of this filter membrane pore size determination instrument is equipped with the tensimeter 8 of measurement gas pressure, measure the thermometer 9 of temperature in the shell, casing 1 is provided with intake interface 2, gas enters in the pipeline by operation valve 7 control air inflows, cross surge flask 10 and enter gas cylinder 3, gas can be derived from gas cylinder 3 and be emitted by air release 6.
Being covered with sieve tray 4, one blind nuts 5 on the bottleneck of gas cylinder 3 is tightly connected with the air storage bottleneck; Be provided with O-ring seals 11 between air storage bottleneck and the sieve tray 4, blind nut 5 with become a test pool after the air storage bottleneck is tightened.
During test, the draft tube joint that will be complementary is connected with intake interface 2, O-ring seals 11 is placed on the bottleneck of gas cylinder 3, places on the O-ring seals 11 through soaking into the filter membrane sheet of handling, and is covered with sieve tray 4, screws blind nut 5.
In test pool, inject an amount of Purified Water to the about 5mm of height of liquid layer, rotary air valve slowly, make pressure gas enter analyzer, at any time observation test pond liquid level and barometric pressure, force value when emerging first bubble and continuous bubbling in the read test pond, be bubble point pressure, thereby calculate the maximum diameter of hole.
Claims (3)
1. filter membrane pore size determination instrument, comprise a casing (1), casing (1) is provided with tensimeter (8), thermometer (9), form gas turnover pipeline by intake interface (2), operation valve (7) and air release (6), it is characterized in that: be provided with a gas cylinder (3) that has a gas inlet and outlet in the gas turnover pipeline, casing (1) is stretched out in the bottle upper end, is covered with sieve tray (4) on the bottleneck; One blind nut (5) is tightly connected with the air storage bottleneck; Form a test pool between blind nut (5) and the sieve tray (4).
2. a kind of filter membrane pore size determination instrument according to claim 1 is characterized in that: be provided with O-ring seals (11) between the bottleneck of gas cylinder (3) and the sieve tray (4).
3. a kind of filter membrane pore size determination instrument according to claim 1 is characterized in that: gas passes in and out in the pipeline at the preceding surge flask (10) that has gas inlet and outlet that also is provided with of gas cylinder (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01273638 CN2509578Y (en) | 2001-11-30 | 2001-11-30 | Filtering film aperture measurer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01273638 CN2509578Y (en) | 2001-11-30 | 2001-11-30 | Filtering film aperture measurer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2509578Y true CN2509578Y (en) | 2002-09-04 |
Family
ID=33678532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01273638 Expired - Fee Related CN2509578Y (en) | 2001-11-30 | 2001-11-30 | Filtering film aperture measurer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2509578Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010072104A1 (en) * | 2008-12-23 | 2010-07-01 | 南京工业大学 | Porous material surface orifice's diameter distribution measuring method |
| CN101968430A (en) * | 2010-09-29 | 2011-02-09 | 西安航天华威化工生物工程有限公司 | Device and method for measuring maximum aperture of filter element by dry method |
| CN102087195A (en) * | 2010-12-03 | 2011-06-08 | 宁波大学 | Full-automatic microfiltration membrane aperture distribution tester as well as automatic measuring method and application thereof |
| CN102480181A (en) * | 2010-11-24 | 2012-05-30 | 通用汽车环球科技运作有限责任公司 | Rotor assembly and method of manufacturing a rotor assembly |
-
2001
- 2001-11-30 CN CN 01273638 patent/CN2509578Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010072104A1 (en) * | 2008-12-23 | 2010-07-01 | 南京工业大学 | Porous material surface orifice's diameter distribution measuring method |
| US8528384B2 (en) | 2008-12-23 | 2013-09-10 | Nanjing University Of Technology | Method of determining surface pore mouth diameter distribution of porous material |
| CN101968430A (en) * | 2010-09-29 | 2011-02-09 | 西安航天华威化工生物工程有限公司 | Device and method for measuring maximum aperture of filter element by dry method |
| CN102480181A (en) * | 2010-11-24 | 2012-05-30 | 通用汽车环球科技运作有限责任公司 | Rotor assembly and method of manufacturing a rotor assembly |
| CN102087195A (en) * | 2010-12-03 | 2011-06-08 | 宁波大学 | Full-automatic microfiltration membrane aperture distribution tester as well as automatic measuring method and application thereof |
| CN102087195B (en) * | 2010-12-03 | 2012-07-04 | 宁波大学 | Full-automatic microfiltration membrane aperture distribution tester as well as automatic measuring method and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020904 Termination date: 20101130 |