CN103130187A - Nitrogen back washing technique - Google Patents
Nitrogen back washing technique Download PDFInfo
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- CN103130187A CN103130187A CN201210326075XA CN201210326075A CN103130187A CN 103130187 A CN103130187 A CN 103130187A CN 201210326075X A CN201210326075X A CN 201210326075XA CN 201210326075 A CN201210326075 A CN 201210326075A CN 103130187 A CN103130187 A CN 103130187A
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- molecular sieve
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Abstract
The invention relates to nitrogen back washing technique which comprises a compressor, a fan radiator, an activated aluminium oxide air inlet filter, a circuit board, a first-second direction air supplying magnetic valve, a first-second direction oxygen supplying magnetic valve, activated aluminium oxide, molecular sieve tower, an oxygen storage pot, a first-second direction oxygen conveying pipeline, a first-second direction left-right separation oxygen supply pipeline, a back washing air supplying reversing valve, a first-second direction air supply main pipeline, a compressor oxygen supplying main pipeline, a back washing air supplying reversing valve data control line, an oxygen outlet, a separation net, a first-second direction nitrogen discharging device, a first-second direction left-right direction oxygen supplying pipeline, a water-air separator, a first-second direction oxygen supplying pot check valve, a first-second direction air supplying magnetic valve data control line and a first-second direction oxygen supplying magnetic valve data control line. According to the nitrogen back washing technique, the air inlet of the compressor has activated aluminium oxide filter, humidity and impurities in the air can be reduced to the maximum, the fact that service life of a molecular sieve is shortened because of the humidity is avoided, and service life of the molecular sieve is prolonged.
Description
Technical field
The present invention relates to a kind of environmental protection and energy saving oxygenerator, be specifically related to a kind of nitrogen backwashing technology.
Background technology
At present, the small domestic oxygenator on market is supplied gas oxygen as main take one direction, although have the oxygen uptake function, can make certain density oxygen.Have but domestic Miniature oxygenerator is common the phenomenon that oxygen concentration is low, oxygen-producing amount is low.Also have a kind of small chemical oxygen generating plant on market, not only high the but also oxygen effect of cost does not reach ideal effect, and this small chemical oxygen generating plant also can produce a large amount of wastes in oxygen.Some physical oxygen-making devices can not get the oxygen of enough flows along with the increase of duration of service, and oxygen concentration does not reach Application standard.In the course of time can't play the effect of oxygen health care.Present Miniature oxygenerator maintenance cost on the market is high, and energy consumption is large, and consumer cost is high, has increased the weight of human consumer's consumer cost.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, the nitrogen backwashing technology has been proposed, described oxygenerator utilizes the high-purity oxygen that the nitrogen backwashing technology is nontoxic as raw material makes, aseptic take air, reach medical standard, and described nitrogen backwashing technology has extended the work-ing life of molecular sieve in the physical oxygen-making device.Solved molecular sieve short problem in work-ing life for a long time, for human consumer's long-term oxygen health care provides assurance.Described nitrogen backwashing technology is intelligent to be controlled, and operational safety is convenient, and the advantage of this technology is the work-ing life that extends and guaranteed molecular sieve.The work-ing life that the utilization of this technology makes molecular sieve than the high life 2-3 of equal oxygen making machine molecular sieve doubly.
technical scheme of the present invention is: the nitrogen backwashing technology comprises compressor, fan radiator, the activated alumina air intake filter, wiring board, the Party B is to gas supply electromagnetic valve, the Party B is to the oxygen supply magnetic valve, the Party A is to the oxygen supply magnetic valve, the Party A is to gas supply electromagnetic valve, activated alumina, the molecular sieve tower, the molecular sieve tower, oxygen container, the Party A is to the oxygen therapy pipeline, the Party B is to the oxygen therapy pipeline, the Party B parts on the right side left to oxygen supply pipeline, the Party A parts on the right side left to steam line, back flushing air feed reversing valve, the Party B is to the air feed main pipe line, the Party A is to the air feed main pipe line, compressor oxygen supply main pipe line, back flushing air feed reversing valve Data Control line, oxygen exhaust, separate mesh, the Party B is to the denitrogen device, the Party A is to the denitrogen device, the Party A parts on the right side left to oxygen supply pipeline, the Party B parts on the right side left to oxygen supply pipeline, moisture separator, the Party A returns only valve to the oxygen container oxygen supply, the Party B returns only valve to the oxygen container oxygen supply, the Party A is to gas supply electromagnetic valve Data Control line, the Party B is to gas supply electromagnetic valve Data Control line, the Party B is to oxygen supply magnetic valve Data Control line, the Party A is to oxygen supply magnetic valve Data Control line, described back flushing air feed reversing valve is connected with wiring board by back flushing air feed reversing valve data line, and described first, Party B is connected to gas supply electromagnetic valve with first, Party B to the denitrogen device, described air feed main pipe line is connected with back flushing air feed reversing valve, described Backflush reversing valve is connected to steam line with the Party B to steam line with the Party A respectively, described Party A is connected to gas supply electromagnetic valve with the Party A to steam line, described Party B is connected to gas supply electromagnetic valve with the Party B to steam line,
The Party A parts on the right side to steam line left respectively at the Party A to gas supply electromagnetic valve and is connected; The Party B parts on the right side to steam line left respectively at the Party B to gas supply electromagnetic valve and is connected; The Party A parts on the right side left to steam line and is connected respectively at two molecular sieve towers; The Party B parts on the right side left to steam line and is connected respectively at two molecular sieve towers; Described two molecular sieve towers minute are connected to oxygen supply pipeline respectively at the first and second about directions; Divide about described the first and second directions and be connected to gas supply electromagnetic valve with the Party B to gas supply electromagnetic valve with the Party A respectively to steam line; Described Party A is connected to the oxygen therapy pipeline with the Party A to gas supply electromagnetic valve; Described Party B is connected to oxygen supply pipeline with the Party B to the oxygen supply magnetic valve; Described the first and second direction air ducts are connected with oxygen container from the first and second directions simultaneously; Described oxygen container only returns with the first and second direction oxygen supply tank oxygen supplys, and valve is connected; Described wiring board respectively with back flushing air feed reversing valve, the Party A is connected to gas supply electromagnetic valve with the Party A to gas supply electromagnetic valve with the Party B to gas supply electromagnetic valve, wiring board is connected with compressor.Described Party A is connected to the denitrogen device with the Party A to gas supply electromagnetic valve, and the Party B is connected to the denitrogen device with the Party B to gas supply electromagnetic valve.
The present invention has following beneficial effect:
1, the present invention adopts compressor gas supplied back-purge system, has greatly increased the work-ing life of molecular sieve.
2, the two-way activated alumina that is equipped with in molecular sieve of the present invention, and air inlet steam trap reduces airborne humidity to greatest extent, avoids outdoor humidity excessive work-ing life that affects molecular sieve.
3, the present invention in use with the nitrogen exhaust gas emission to outdoor, guaranteed user's health.
4, compressor inlet of the present invention has the activated alumina filtration, makes compressor reduce to greatest extent at work airborne humidity and impurity, avoids affecting because of high humidity the work-ing life of molecular sieve, improves the work-ing life of molecular sieve.
5, the present invention is simple in structure, and is easy to use, both artistic and practical, intelligent control, safe and convenient.
Description of drawings
Further illustrate the present invention below in conjunction with the drawings and specific embodiments.
Accompanying drawing 1 is structural representation of the present invention.
In figure 1, compressor; 2, fan radiator; 3, activated alumina air intake filter; 4, wiring board; 5, the Party B is to gas supply electromagnetic valve; 6, the Party B is to the oxygen supply magnetic valve; 7, the Party A is to the oxygen supply magnetic valve; 8, the Party A is to gas supply electromagnetic valve; 9, activated alumina; 10 molecular sieve towers; 11, molecular sieve tower; 12, oxygen container; 13, the Party A is to the oxygen therapy pipeline; 14, the Party B is to the oxygen therapy pipeline; 15, the Party B parts on the right side left to oxygen supply pipeline; 16, the Party A parts on the right side left to steam line; 17, back flushing air feed reversing valve; 18, the Party B is to the air feed main pipe line; 19, the Party A is to the air feed main pipe line; 20, compressor oxygen supply main pipe line; 21, back flushing air feed reversing valve Data Control line; 22 oxygen exhausts; 23, separate mesh; 24, the Party B is to the denitrogen device; 25, the Party A is to the denitrogen device; 26, the Party A parts on the right side left to oxygen supply pipeline; 27, the Party B parts on the right side left to oxygen supply pipeline; 28, moisture separator; 29, the Party A returns only valve to the oxygen container oxygen supply; 30, the Party B returns only valve to the oxygen container oxygen supply; 31, the Party A is to gas supply electromagnetic valve Data Control line; 32, the Party B is to gas supply electromagnetic valve Data Control line; 33, the Party B is to oxygen supply magnetic valve Data Control line; 34, the Party A is to oxygen supply magnetic valve Data Control line
Embodiment:
Consult shown in Figure 1, the present invention includes wiring board 4, compressor 1, fan radiator 2, activated alumina air intake filter 3, oxygen container 12, back flushing air feed reversing valve 17, Party B to gas supply electromagnetic valve 5, Party B to oxygen supply magnetic valve 6, the Party A is to oxygen supply magnetic valve 7, Party A to gas supply electromagnetic valve described 8 etc., described nitrogen back-purge system is by wiring board 4 power initiations.Outside air enters compressor 1 through activated alumina filter 3, after compressor 1 pressurization, air is admitted to compressor oxygen supply main pipe line 20 through moisture separator 28, air enters back flushing air feed reversing valve 17 by compressor oxygen supply main pipe line 20, and described back flushing air feed reversing valve 17 is connected with wiring board 4 by back flushing air feed reversing valve data line 21.Wiring board 4 is controlled Backflush reversing valve 17 respectively to the first and second both direction air feed by back flushing air feed reversing valve data line 21.Each start is controlled the air feed direction automatically by wiring board 4, when inferior start be the Party A to, wiring board 4 can automatic Memories directions this time, the direction of starting shooting next time automatically become the Party B to.Circulation successively.The air that enters Backflush reversing valve 17 enters the Party A to air feed main pipe line 19, arrive the Party A to gas supply electromagnetic valve 8 through the Party A to air feed main pipe line 19, described Party A is connected to gas supply electromagnetic valve 8 with the Party A to denitrogen device 19, and the nitrogen of separating is discharged to denitrogen device 19 by the Party A.Described Party A is controlled to gas supply electromagnetic valve Data Control line 31 by the Party A by wiring board 4 automatically to gas supply electromagnetic valve 8, carry out left and right minute to molecular sieve tower 10 and molecular sieve tower 11 air feed, service life is by the size customization Party A of described molecular sieve tower 10 and molecular sieve tower 11 and compressor 1 length to the time to turn of gas supply electromagnetic valve 8.When gas enters molecular sieve tower 10, remove residual steam through activated alumina 9, oxygen enters molecular sieve tower 10 and enters Party B's oxygen supply pipeline 27 to the left and right by separate mesh 23, activated alumina 9 at this moment, by the Party B to the left and right oxygen supply pipeline 27 and Party B to the left and right oxygen supply magnetic valve 5 enter the Party B to oxygen supply pipeline 14, more only returned to oxygen supply pipeline 14 and Party B to the oxygen container oxygen supply by the Party B valve 30 enter oxygen container 12. oxygen by oxygen exhaust 22 for the human consumer.During to the Party A to air feed, the Party B controls autoshutdown to gas supply electromagnetic valve 5 by wiring board 4, the Party A is controlled by wiring board 4 to oxygen supply magnetic valve 6 to oxygen supply magnetic valve 7, Party B and automatically opens, and the front and back order is carried out programming according to compressor size and molecular sieve tower size.During to the Party B to air feed, the Party A closes to gas supply electromagnetic valve 8 when compressor 1, and the Party B closes simultaneously to gas supply electromagnetic valve 5.The Party A opens simultaneously to gas supply electromagnetic valve 7, is automatically controlled by wiring board 4.When compressor 1 when the oxygen in molecular sieve tower 10 is full of.Magnetic valve automatically is transformed into molecular sieve tower 11 and carries out air feed, successively repeatedly, when forwarding molecular sieve tower 11 air feed to, nitrogen moment in molecular sieve tower 10 is through separate mesh 22 and activated alumina 9, by the Party A to steam line 19, Party A to gas supply electromagnetic valve 8, the Party A to 25 moments of denitrogen device with nitrogen discharge to outdoor.Can also take away simultaneously activity supported in unnecessary moisture.The nitrogen back-purge system after start work always the Party A to air feed, after shutdown again the start after the auto-steering Party B is to air feed, this process is by the procedure auto-control in wiring board 4.Each start is different from the work oxygen direction of last start, has greatly reduced the moisture entrapment of activated alumina 9 and molecular sieve.Simultaneously, can clean residual that task produces in the time of every task, thus the work-ing life that has strengthened molecular sieve.
Claims (6)
1. nitrogen backwashing technology, it is characterized in that: the nitrogen backwashing technology comprises and contains compressor, fan radiator, the activated alumina air intake filter, wiring board, the Party B is to gas supply electromagnetic valve, the Party B is to the oxygen supply magnetic valve, the Party A is to the oxygen supply magnetic valve, the Party A is to gas supply electromagnetic valve, activated alumina, the molecular sieve tower, the molecular sieve tower, oxygen container, the Party A is to the oxygen therapy pipeline, the Party B is to the oxygen therapy pipeline, the Party B parts on the right side left to oxygen supply pipeline, the Party A parts on the right side left to steam line, back flushing air feed reversing valve, the Party B is to the air feed main pipe line, the Party A is to the air feed main pipe line, compressor oxygen supply main pipe line, back flushing air feed reversing valve Data Control line, oxygen exhaust, separate mesh, the Party B is to the denitrogen device, the Party A is to the denitrogen device, the Party A parts on the right side left to oxygen supply pipeline, the Party B parts on the right side left to oxygen supply pipeline, moisture separator, the Party A returns only valve to the oxygen container oxygen supply, the Party B returns only valve to the oxygen container oxygen supply, the Party A is to gas supply electromagnetic valve Data Control line, the Party B is to gas supply electromagnetic valve Data Control line, the Party B is to oxygen supply magnetic valve Data Control line, the Party A is to oxygen supply magnetic valve Data Control line, described back flushing air feed reversing valve is connected with wiring board by back flushing air feed reversing valve data line, and described first, Party B is connected to gas supply electromagnetic valve with first, Party B to the denitrogen device, described air feed main pipe line is connected with back flushing air feed reversing valve, described Backflush reversing valve is connected to steam line with the Party B to steam line with the Party A respectively, described Party A is connected to gas supply electromagnetic valve with the Party A to steam line, described Party B is connected to gas supply electromagnetic valve with the Party B to steam line, the Party A parts on the right side to steam line left respectively at the Party A to gas supply electromagnetic valve and is connected, the Party B parts on the right side to steam line left respectively at the Party B to gas supply electromagnetic valve and is connected, the Party A parts on the right side left to steam line and is connected respectively at two molecular sieve towers, the Party B parts on the right side left to steam line and is connected respectively at two molecular sieve towers, described two molecular sieve towers minute are connected to oxygen supply pipeline respectively at the first and second about directions, divide about described the first and second directions and be connected to gas supply electromagnetic valve with the Party B to gas supply electromagnetic valve with the Party A respectively to steam line, described Party A is connected to the oxygen therapy pipeline with the Party A to gas supply electromagnetic valve, described Party B is connected to oxygen supply pipeline with the Party B to the oxygen supply magnetic valve, described the first and second direction air ducts are connected with oxygen container from the first and second directions simultaneously, described oxygen container only returns with the first and second direction oxygen supply tank oxygen supplys, and valve is connected, described wiring board respectively with back flushing air feed reversing valve, the Party A is connected to gas supply electromagnetic valve with the Party A to gas supply electromagnetic valve with the Party B to gas supply electromagnetic valve, wiring board is connected with compressor, described Party A is connected to the denitrogen device with the Party A to gas supply electromagnetic valve, and the Party B is connected to the denitrogen device with the Party B to gas supply electromagnetic valve.
2. nitrogen backwashing technology according to claim 1, it is characterized in that: described wiring board is controlled Backflush reversing valve respectively to the first and second both direction air feed by back flushing air feed reversing valve data line, each start is controlled the air feed direction automatically by wiring board, when inferior start be the Party A to, wiring board meeting automatic Memory is direction this time, next time start direction becomes the Party B automatically to, circulation successively.
3. nitrogen backwashing technology according to claim 1, it is characterized in that: described compressor is during to the Party B to air feed, and the Party A closes to gas supply electromagnetic valve, and the Party B closes simultaneously to gas supply electromagnetic valve, the Party A opens simultaneously to gas supply electromagnetic valve, is automatically controlled by wiring board.
4. nitrogen backwashing technology according to claim 1, it is characterized in that: described nitrogen back-purge system after start work always the Party A to air feed, again after starting shooting after shutdown, the auto-steering Party B is to air feed, and this process is by the procedure auto-control in wiring board; Each start is different with the work oxygen direction of last start, has greatly reduced the moisture entrapment of activated alumina and molecular sieve, can clean the residual of task generation when every task simultaneously, thus the work-ing life that has strengthened molecular sieve.
5. nitrogen backwashing technology according to claim 1, it is characterized in that: described compressor inlet has activated alumina and filters, make compressor reduce to greatest extent at work airborne humidity and impurity, avoid affecting because of high humidity the work-ing life of molecular sieve, improve the work-ing life of molecular sieve.
6. nitrogen backwashing technology according to claim 1 is characterized in that: the two-way activated alumina that is equipped with in molecular sieve, and air inlet steam trap, reduce to greatest extent airborne humidity, and avoid outdoor humidity excessive work-ing life that affects molecular sieve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210326075.XA CN103130187B (en) | 2012-09-06 | 2012-09-06 | Nitrogen backwashing technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210326075.XA CN103130187B (en) | 2012-09-06 | 2012-09-06 | Nitrogen backwashing technology |
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| CN103130187A true CN103130187A (en) | 2013-06-05 |
| CN103130187B CN103130187B (en) | 2015-08-12 |
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| CN201210326075.XA Active CN103130187B (en) | 2012-09-06 | 2012-09-06 | Nitrogen backwashing technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423811A (en) * | 2013-08-15 | 2013-12-04 | 青岛道一空优科技有限公司 | Novel household air purification system |
| CN103432858A (en) * | 2013-08-15 | 2013-12-11 | 青岛道一空优科技有限公司 | Novel nitrogen-oxygen separation device |
| CN107289733A (en) * | 2017-07-18 | 2017-10-24 | 佛山市鼎特机械设备有限公司 | A kind of sterile liquid nitrogen machine and its nitrogen producing craft flow |
| CN115010094A (en) * | 2022-06-02 | 2022-09-06 | 湖南捷工医疗科技有限公司 | Outdoor vehicular oxygenerator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004262743A (en) * | 2003-02-13 | 2004-09-24 | Showa Engineering Co Ltd | Method and apparatus for concentrating oxygen |
| CN1861246A (en) * | 2006-02-17 | 2006-11-15 | 成都安普环境技术有限公司 | Method for producing oxygen by using air as raw material |
| CN101301999A (en) * | 2008-06-25 | 2008-11-12 | 天津大学 | Method for collecting oxygen from air |
-
2012
- 2012-09-06 CN CN201210326075.XA patent/CN103130187B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004262743A (en) * | 2003-02-13 | 2004-09-24 | Showa Engineering Co Ltd | Method and apparatus for concentrating oxygen |
| CN1861246A (en) * | 2006-02-17 | 2006-11-15 | 成都安普环境技术有限公司 | Method for producing oxygen by using air as raw material |
| CN101301999A (en) * | 2008-06-25 | 2008-11-12 | 天津大学 | Method for collecting oxygen from air |
Non-Patent Citations (2)
| Title |
|---|
| 卜令兵等: "小型变压吸附制氧技术试验研究", 《化学工业与工程》 * |
| 杨彦钢等: "不同均压方式对PSA和VSA空分制氧过程的影响", 《南京工业大学学报（自然科学版）》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103423811A (en) * | 2013-08-15 | 2013-12-04 | 青岛道一空优科技有限公司 | Novel household air purification system |
| CN103432858A (en) * | 2013-08-15 | 2013-12-11 | 青岛道一空优科技有限公司 | Novel nitrogen-oxygen separation device |
| CN103432858B (en) * | 2013-08-15 | 2015-12-02 | 青岛道一空优科技有限公司 | A kind of Novel nitrogen-oxygen separation device |
| CN107289733A (en) * | 2017-07-18 | 2017-10-24 | 佛山市鼎特机械设备有限公司 | A kind of sterile liquid nitrogen machine and its nitrogen producing craft flow |
| CN115010094A (en) * | 2022-06-02 | 2022-09-06 | 湖南捷工医疗科技有限公司 | Outdoor vehicular oxygenerator |
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| CN103130187B (en) | 2015-08-12 |
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Address after: Longkou Road in Laixi city in Shandong province Qingdao City, No. 8, 266600 Applicant after: Qingdao Daoyikongyou Technology Co., Ltd. Address before: Longkou Road in Laixi city in Shandong province Qingdao City, No. 8, 266600 Applicant before: Qingdao Daoyi Oxygen Bar Equipment Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: QINGDAO DAOYI OXYGEN BAR EQUIPMENT CO., LTD. TO: QINGDAO DAOYI KONGYOU TECHNOLOGY CO., LTD. |
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