CN201154274Y - Self-cleaning filter for sample gas - Google Patents
Self-cleaning filter for sample gas Download PDFInfo
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- CN201154274Y CN201154274Y CNU2008200031029U CN200820003102U CN201154274Y CN 201154274 Y CN201154274 Y CN 201154274Y CN U2008200031029 U CNU2008200031029 U CN U2008200031029U CN 200820003102 U CN200820003102 U CN 200820003102U CN 201154274 Y CN201154274 Y CN 201154274Y
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- sample gas
- spiral cover
- filtration membrane
- filter
- self
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Abstract
The utility model discloses a self-cleaning sample gas filter which comprises a filtering body, a spiral cover and a filtering film. The filtering film is vertically clamped between the filtering body and the spiral cover; the filtering body and the filtering film form a filtering chamber; a sample gas chamber is formed between the spiral cover and the filtering film; a sample gas inlet is arranged above the filtering body; a bypass outlet is arranged in the vertical direction of the lower part of the filtering body and a sample gas outlet; a sample gas channel is arranged on the spiral cover and the filtering body, and the sample gas outlet of the channel is arranged on the filtering body, or the sample gas outlet is directly arranged on the spiral cover. Since the sample gas inlet is arranged at the upper part, the sample gas outlet is arranged at the lower part, and the bypass outlet is arranged at the lower part vertical to the sample gas inlet; the filtering film is vertically arranged, so the sample gas forms a parallel direction from the top to the bottom to easily blow powder dust or drippings possibly remaining on the filtering film, and the powder dust or the drippings are carried away and discharged along with the bypass, thereby having the self-cleaning function without maintenance and effectively preventing the jam of the filter.
Description
Technical field
The utility model relates to a kind of filter, more precisely is the self-cleaning style air filter that the liquid mist separates in a kind of sample gas processing system.
Background technology
Moisture trap after the sample gas condenser can not separate tiny liquid mist, the Secure Application of its after-filter of liquid mist entail dangers in these sample gas.Traditional membrane filter filters as the protectiveness of gas analyzer; can filter the above dust of 0.3um; powerless to the liquid mist; gas-flow resistance increased after the liquid mist drenched film; tensile strength reduces; may cause filtration membrane to stop up or damaged catastrophe failure, the reliability of filter is low, needs design moisture to report to the police and ensures the safety of gas analyzer.
Application number is the self-cleaning liquid mist separator-filter of 200720124381.X, still has tangible deficiency and defective in actual applications: the filtering accuracy of the hydrophobic fiber film that it adopts only is 0.1um, does not really reach more high-precision Nano grade as yet; And filtration membrane becomes to be horizontally disposed with, and it adheres to residual dust greatly reduces its tensile strength, the shortening of the reliability of filter reduction just and maintenance period; The filter chamber of horizontal positioned easily causes the precipitation after impurity such as dust soak, and has increased maintenance; Sample gas is imported and exported respectively on filtering bodies and spiral cover, can not on-line maintenance and change filtration membrane.
The utility model content
Technical problem to be solved in the utility model provide a kind of simple in structure, use reliably, on-line maintenance, realized Nano grade and reached the self-cleaning style air filter of micro-filtration standard.
In order to address the above problem, the utility model is taked following technical scheme:
A kind of self-cleaning style air filter, comprise filter body, spiral cover and filtration membrane, described filtration membrane vertical folder is located between filter body and the spiral cover, filter body and filtration membrane form the filter chamber, constitute the sample air chamber between spiral cover and the filtration membrane, the top of filter body is provided with the below of sample gas inlet, filter body and the vertical direction of sample gas outlet is provided with the bypass outlet, and described spiral cover and filter body are provided with sample gas passage, the sample gas outlet of passage is arranged on the filter body, or the outlet of sample gas directly is set on spiral cover.
Described filtration membrane is for having nano-meter characteristic polymerization filtration membrane.
Described filtration membrane two ends are provided with seal washer, and described spiral cover and filter body are tightly connected by described seal washer and filtration membrane.
Described spiral cover adopts the water white lucite of outer surface polishing.
Sample gas channel interface place in described sample air chamber and the filter chamber is tightly connected by seal washer.
The beneficial effects of the utility model are: because sample gas inlet is arranged on the top, the outlet of sample gas is arranged on the below, the bypass outlet is arranged on and the vertical below of sample gas inlet, filtration membrane vertically is provided with, sample gas becomes parallel direction to be easy to purge from top to bottom and falls residual dust or the drop of possibility on the filtration membrane, take away, discharge with by-pass, non-maintaining self-cleaning action is arranged, effectively prevent plugged filter.
Description of drawings
Fig. 1 is the structural representation of self-cleaning style air filter.
The specific embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
With reference to Fig. 1, a kind of self-cleaning style air filter, comprise filter body 1, spiral cover 2 and filtration membrane 3, described filtration membrane 3 vertical folders are located between filter body 1 and the spiral cover 2, filter body 1 and filtration membrane 3 constitute the filter chamber, constitute the sample air chamber between spiral cover 2 and the filtration membrane 3, the top of filter body 1 is provided with sample gas inlet 4, the vertical direction of the below of filter body 1 and sample gas outlet 5 is provided with bypass outlet 6, filtration membrane 3 two ends are provided with seal washer 7, spiral cover 2 and filter body 1 clamp filtration membrane 3 by sealing packing ring 7, and filter body 1 and spiral cover 2 are by being threaded.3 one-tenth of filtration membranes are vertical to be provided with, and increasing its tensile strength, and is easy to purge and falls pollutant possible residual it on.Spiral cover 2 adopts the colourless transparent resin glass material of outer surface polishing, whether contaminated, as by excess contamination, must gas-flow resistance increase from the left apparent direction in the right side of spiral cover 2 if being easy to observe filtration membrane 3, can screw off spiral cover 2 during dismounting, online replacing filtration membrane 3.
The bottom of described spiral cover 2 is dug and is established sample gas passage 8, correspondence is also dug and is established sample gas passage 8 on the filter body 1, the sample gas outlet 5 of passage is arranged on the filter body 1, sample gas is after filtering derived from sample gas passage 8 and sample gas outlet 5, and the junction of above-mentioned two sections passages 8 is by a seal washer (not shown), and the passway of spiral cover 2 and filter body 1 is to pressing, this seal washer extruding is tight, prevent gas leakage, sample gas outlet 5 is connected to online gas analyzer 9, and the sample gas after filtering is carried out on-line analysis.The annexation more complicated of junction, and middle filtration membrane 3 needs regularly dismounting and change, sample gas outlet 5 is arranged on the filter body 1, only need during dismounting spiral cover 2 is screwed off and can separate, and do not need to dismantle sample gas outlet 5 and and online gas analyzer 9 between complicated connection, not only simplified technology, and prevented from often to dismantle sample gas outlet 5 makes the junction of instrument with extraneous online gas analyzer air-tightness reduction.Described filtration membrane 3 can effectively filter the dust 99.999% of 0.3um granularity for having nano-meter characteristic polymerization filtration membrane, the dust 99% of 0.05um granularity; Transmitance to oil, water, acid ﹠ alkali liquid mist is 0.001%, and just 99.999% can not pass through.The confining spectrum of nanometer is 1～100nm, i.e. 0.001～0.1um, and generally acknowledge that the nominal pore size of micro-filtration is≤0.2um is so the utility model has been realized Nano grade and reached the efficient synthetic filter of micro-filtration standard.
Certainly, also can be set directly on the described spiral cover 2, sample gas is directly discharged from the sample air chamber.
The tested gas of technical process enters the filter chamber by sample gas inlet 4, and sub-fraction sample gas filters the back by sample gas outlet 5 outputs through high efficiency filter film 3 high accuracy, and the Input Online gas analyzer is analyzed.Most of sample gas in addition becomes parallel direction washing and filtering film 3 from top to bottom, is carrying dust and drop secretly and is discharging from bypass outlet 6, and constituting quick bypass, has improved the reaction speed of on-line analysis system.In this course, the high-efficiency polymerization filtration membrane 3 with nano-meter characteristic presents hydrophobic property, no matter the aneroid mist is arranged, its gas-flow resistance is all very little, filters the dust 99.999% of 0.3um granularity, filters the dust 99% of the granularity of 0.05um; The transmitance of liquid such as oil and water mist is 0.001%, and promptly 99.999% can not pass through, and so high efficiency filter can obtain the clean sample gas of " dustless, anhydrous ", satisfies the harsh requirement of on-line analysis device long-life Secure Application fully.Form a unimpeded bypass between sample gas inlet 4, filter chamber and the by-pass outlet in addition, sample gas by-pass becomes parallel direction to rinse out residual dust or the drop of possibility on the filtration membrane 3 from top to bottom, by-pass is carrying these dust secretly and drop is discharged from the by-pass outlet, even if idol has aqueous water to occur also having no obstruction, thereby play self-cleaning action from purge, effectively prevent plugged filter, the application that makes filter also can screw off spiral cover 2 online replacing films in case of necessity near non-maintaining.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1, a kind of self-cleaning style air filter, it is characterized in that, comprise filter body, spiral cover and filtration membrane, described filtration membrane vertical folder is located between filter body and the spiral cover, filter body and filtration membrane constitute the filter chamber, constitute the sample air chamber between spiral cover and the filtration membrane, the top of filter body is provided with the below of sample gas inlet, filter body and the vertical direction of sample gas outlet is provided with the bypass outlet, described spiral cover and filter body are provided with sample gas passage, the sample gas outlet of passage is arranged on the filter body, or the outlet of sample gas directly is set on spiral cover.
2, self-cleaning style air filter according to claim 1 is characterized in that, described filtration membrane is for having nano-meter characteristic polymerization filtration membrane.
3, self-cleaning style air filter according to claim 1 and 2 is characterized in that, described filtration membrane two ends are provided with seal washer, and described spiral cover and filter body are tightly connected by described seal washer and filtration membrane.
4, self-cleaning style air filter according to claim 3 is characterized in that, described spiral cover adopts the water white lucite of outer surface polishing.
5, self-cleaning style air filter according to claim 4 is characterized in that, the sample gas channel interface place on described filter body and the spiral cover is tightly connected by a seal washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200031029U CN201154274Y (en) | 2008-01-21 | 2008-01-21 | Self-cleaning filter for sample gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200031029U CN201154274Y (en) | 2008-01-21 | 2008-01-21 | Self-cleaning filter for sample gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201154274Y true CN201154274Y (en) | 2008-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200031029U Expired - Fee Related CN201154274Y (en) | 2008-01-21 | 2008-01-21 | Self-cleaning filter for sample gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201154274Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103877797A (en) * | 2014-03-19 | 2014-06-25 | 西安交通大学 | Gas dust-removing and sampling device |
| CN105233634A (en) * | 2015-10-29 | 2016-01-13 | 北京神雾环境能源科技集团股份有限公司 | Membrane separation device for removing suspended droplets in gas, and method for removing suspended droplets in gas with membrane separation device |
| CN106989961A (en) * | 2017-05-16 | 2017-07-28 | 江西省农业科学院土壤肥料与资源环境研究所 | The collection method of plant root secretion collection device and xerophyte root exudates |
| CN116990519A (en) * | 2023-09-28 | 2023-11-03 | 山东省立第三医院 | Portable blood sugar detector container |
-
2008
- 2008-01-21 CN CNU2008200031029U patent/CN201154274Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103877797A (en) * | 2014-03-19 | 2014-06-25 | 西安交通大学 | Gas dust-removing and sampling device |
| CN103877797B (en) * | 2014-03-19 | 2015-08-26 | 西安交通大学 | A kind of dedusting and sampling apparatus |
| CN105233634A (en) * | 2015-10-29 | 2016-01-13 | 北京神雾环境能源科技集团股份有限公司 | Membrane separation device for removing suspended droplets in gas, and method for removing suspended droplets in gas with membrane separation device |
| CN106989961A (en) * | 2017-05-16 | 2017-07-28 | 江西省农业科学院土壤肥料与资源环境研究所 | The collection method of plant root secretion collection device and xerophyte root exudates |
| CN116990519A (en) * | 2023-09-28 | 2023-11-03 | 山东省立第三医院 | Portable blood sugar detector container |
| CN116990519B (en) * | 2023-09-28 | 2023-11-28 | 山东省立第三医院 | Portable blood sugar detector container |
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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: 20081126 Termination date: 20140121 |