CN103487314A - Nitrogen blowing instrument with variable gas supply rate - Google Patents
Nitrogen blowing instrument with variable gas supply rate Download PDFInfo
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- CN103487314A CN103487314A CN201310457829.XA CN201310457829A CN103487314A CN 103487314 A CN103487314 A CN 103487314A CN 201310457829 A CN201310457829 A CN 201310457829A CN 103487314 A CN103487314 A CN 103487314A
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Abstract
The invention relates to a nitrogen blowing instrument with a variable gas supply rate. The nitrogen blowing instrument comprises a base, a bracket, a gas supply device and sample fixing devices, and is characterized in that the gas supply device comprises a nitrogen generator which is connected with a gas guide tube, the gas guide tube is fixed on the bracket and extends to form a plurality of branches, and gas spraying devices are arranged at the tail ends of the branches; the gas spraying devices are in one-to-one correspondence to the sample fixing devices; an inlet gas adjusting valve is arranged in the front section of each gas spraying device and comprises a round piece with the diameter same as that of each gas supplying branch and a rotating shaft arranged on a middle axis of the round piece; and rotary switches are arranged at two ends of each rotating shaft and controlled to be switched on or off by gas supplying switches. According to the nitrogen blowing instrument adopting the technical scheme, the nitrogen drying accuracy is improved by changing the nitrogen supply rate on the premise of keeping higher work efficiency, so that the accuracy of residues in samples is improved.
Description
Technical field
The present invention relates to a kind of drying device, especially a kind of Nitrogen evaporator of air feed rate-compatible.
Background technology
Sample concentration is the problem that each chemical laboratory will relate to.In the past, be mainly to adopt Rotary Evaporators to be concentrated, still, adopt Rotary Evaporators to concentrate shortcoming obvious: concentrated speed is slow, and troublesome poeration especially is not suitable for sample in a small amount.In the case, Nitrogen evaporator arises at the historic moment, it has not only solved all shortcomings that adopt Rotary Evaporators, be particularly useful for a plurality of in a small amount samples, and for the sample that even needs cooling concentration that can not heat, can only use especially Nitrogen evaporator to be concentrated, therefore, what it became each chemical laboratory must join instrument.At present, Nitrogen evaporator is mainly used in purifying and the preparation that chromatogram, mass spectrum etc. are analyzed samples, and for accelerating the volatilization of water, toluene, methyl alcohol, acetone equal solvent, it is widely used in the fields such as food security, medicine, Detecting Pesticide, clinical medicine generation.
Usually, Nitrogen evaporator is comprised of heating arrangement, sample positioning device and feeder three parts.Nitrogen or air, after feeder is adjusted flow, are blown into the sampling receptacle that is fixed on sample positioning device and is placed in heating arrangement by gas blow pipe, the organic solvent in sample in sampling receptacle is volatilized rapidly, thereby realize concentrating sample.The jet speed of Nitrogen evaporator is in the market fixed, and makes in operation and usually needs residue jointly to volatilize with liquid to be volatilized, and has caused the waste of product.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of Nitrogen evaporator, especially a kind of Nitrogen evaporator of air feed rate-compatible.
For solving the problems of the technologies described above, the invention provides a kind of Nitrogen evaporator of air feed rate-compatible, comprise base, support, feeder and sample fixing device; Described feeder comprises nitrogen gas generator, and described nitrogen gas generator is connected with wireway, and described wireway is fixed on support, and described wireway extends many branch roads; Described branch road end is equipped with air jet system; Described air jet system is corresponding one by one with sample fixing device; Described each air jet system leading portion is equipped with the air inlet adjustment valve; The disk that described air inlet adjustment valve is equated with the air feed branch road by diameter, and the rotating shaft be built up on the disk axis forms; Described rotating shaft two ends are provided with rotary switch, and described rotary switch is controlled and opened by air supply valve.
As a modification of the present invention, described wireway branch road is curve and forms.Adopt above-mentioned design to flow the impulse force that increases nitrogen stream in the impact of branch road bending place by nitrogen.
As a modification of the present invention, in described air inlet adjusting gear, the disk initial position is vertical with the mouth of pipe of air feed branch road, and it can guarantee at air feed initial stage nitrogen fast by the air feed branch road.
As a modification of the present invention, in described air inlet adjusting gear, the adjustment angle of disk is 0 ° to 90 °, it can be so that the pending liquid rapid evaporation in the early stage in sample, and when pending liquid levels, approaching while needing residue, due to reducing of air feed branch road diameter, its nitrogen jet speed slows down, and is convenient to control degree of drying.
As another kind of improvement the of the present invention, in described air feed adjusting gear, the speed of rotation of disk increases gradually by 0 ° to 90 °, it can be so that the air feed branch road keeps longer larger diameter state, reduce the nitrogen jet time under air feed branch road minor diameter state simultaneously, improve the work efficiency of Nitrogen evaporator.
As another kind of improvement the of the present invention, described rotary switch is opened and is opened afterwards in 3 seconds at air supply valve, and after it can guarantee nitrogen arrival air inlet adjustment valve, variable valve is started working.
Adopt the Nitrogen evaporator of technique scheme, it can, under keeping than the prerequisite of high workload efficiency, improve the nitrogen drying precision by changing nitrogen air feed speed, and then improve the precision that needs residue in sample.
The accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is air inlet adjustment valve schematic diagram in the present invention;
Description of reference numerals:
1-base, 2-support, 3-nitrogen gas generator, 4-wireway, 5-air feed branch road, 6-air jet system, 7-air inlet adjustment valve, 8-disk, 9-rotating shaft, 10-sample fixing device.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand following embodiment and only for the present invention is described, is not used in and limits the scope of the invention.
The Nitrogen evaporator of a kind of air feed rate-compatible as shown in Figure 1, comprise base 1, support 2, feeder and sample fixing device 10, described feeder comprises nitrogen gas generator 3, described nitrogen gas generator is connected with wireway 4, described wireway 4 is fixed on support 2, and described wireway 4 extends many branch roads 5; Described branch road 5 ends are equipped with air jet system 6; Described air jet system is corresponding one by one with sample fixing device 10; As shown in Figure 2, described each air jet system 6 leading portion are equipped with air inlet adjustment valve 7; The disk 8 that described air inlet adjustment valve is equated with the air feed branch road by diameter, and the rotating shaft 9 be built up on the disk axis forms; Described rotating shaft two ends are provided with rotary switch, and described rotary switch is controlled and opened by air supply valve.
As a modification of the present invention, described wireway branch road 4 is curve and forms.Adopt above-mentioned design to flow the impulse force that increases nitrogen stream in the impact of branch road bending place by nitrogen.
As a modification of the present invention, in described air inlet adjusting gear, disk 8 initial positions are vertical with the mouth of pipe of air feed branch road, and it can guarantee at air feed initial stage nitrogen fast by the air feed branch road.
As a modification of the present invention, in described air inlet adjusting gear, the adjustment angle of disk 8 is 0 ° to 90 °, it can be so that the pending liquid rapid evaporation in the early stage in sample, and when pending liquid levels, approaching while needing residue, due to reducing of air feed branch road diameter, its nitrogen jet speed slows down, and is convenient to control degree of drying.
As another kind of improvement the of the present invention, in described air feed adjusting gear, the speed of rotation of disk 8 increases gradually by 0 ° to 90 °, it can be so that the air feed branch road keeps longer larger diameter state, reduce the nitrogen jet time under air feed branch road minor diameter state simultaneously, improve the work efficiency of Nitrogen evaporator.
As another kind of improvement the of the present invention, described rotary switch is opened and is opened afterwards in 3 seconds at air supply valve, and after it can guarantee nitrogen arrival air inlet adjustment valve, variable valve is started working.
Adopt the Nitrogen evaporator of technique scheme, it can, under keeping than the prerequisite of high workload efficiency, improve the nitrogen drying precision by changing nitrogen air feed speed, and then improve the precision that needs residue in sample.
The disclosed technological means of the present invention program is not limited only to the disclosed technological means of above-mentioned embodiment, also comprises the technical scheme be comprised of above technical characterictic combination in any.
Claims (6)
1. the Nitrogen evaporator of an air feed rate-compatible, comprise base, support, feeder and sample fixing device, it is characterized in that, described feeder comprises nitrogen gas generator, described nitrogen gas generator is connected with wireway, described wireway is fixed on support, and described wireway extends many branch roads; Described branch road end is equipped with air jet system; Described air jet system is corresponding one by one with sample fixing device; Described each air jet system leading portion is equipped with the air inlet adjustment valve; The disk that described air inlet adjustment valve is equated with the air feed branch road by diameter, and the rotating shaft be built up on the disk axis forms; Described rotating shaft two ends are provided with rotary switch, and described rotary switch is controlled and opened by air supply valve.
2. according to the Nitrogen evaporator of air feed rate-compatible claimed in claim 1, it is characterized in that, described wireway branch road is curve and forms.
3. according to the Nitrogen evaporator of air feed rate-compatible claimed in claim 2, it is characterized in that, in described air inlet adjusting gear, the disk initial position is vertical with the mouth of pipe of air feed branch road.
4. according to the Nitrogen evaporator of the described air feed rate-compatible of claim 1 or 3, it is characterized in that, in described air inlet adjusting gear, the adjustment angle of disk is 0 ° to 90 °.
5. according to the Nitrogen evaporator of the described air feed rate-compatible of claim 1 or 3, it is characterized in that, in described air feed adjusting gear, the speed of rotation of disk increases gradually by 0 ° to 90 °.
6. according to the Nitrogen evaporator of air feed rate-compatible claimed in claim 1, it is characterized in that, described rotary switch is opened and is opened afterwards in 3 seconds at air supply valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310457829.XA CN103487314A (en) | 2013-09-30 | 2013-09-30 | Nitrogen blowing instrument with variable gas supply rate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310457829.XA CN103487314A (en) | 2013-09-30 | 2013-09-30 | Nitrogen blowing instrument with variable gas supply rate |
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| CN103487314A true CN103487314A (en) | 2014-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310457829.XA Pending CN103487314A (en) | 2013-09-30 | 2013-09-30 | Nitrogen blowing instrument with variable gas supply rate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370506A (en) * | 2016-11-03 | 2017-02-01 | 北京普立泰科仪器有限公司 | Method and device for improving concentration speed of diameter-variable concentration cup |
| CN108020456A (en) * | 2018-01-24 | 2018-05-11 | 农业部渔业环境及水产品质量监督检验测试中心（天津）（天津市质量监督检验站第二十三站、天津市渔业环境及水产品质量监督检验测试中心） | Nitrogen evaporator and nitrogen evaporator test tube mounting base |
Citations (5)
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|---|---|---|---|---|
| CH689628A5 (en) * | 1995-08-04 | 1999-07-15 | Rolf Hofer | Apparatus for sample concentration |
| CN201034880Y (en) * | 2007-04-19 | 2008-03-12 | 中国科学院生态环境研究中心 | Nitrogen blowing instrument |
| CN201819828U (en) * | 2010-08-31 | 2011-05-04 | 潍坊瑞格测试仪器有限公司 | Nitrogen blowing concentrator |
| CN202209468U (en) * | 2011-08-13 | 2012-05-02 | 无锡杰尔压缩机有限公司 | Flow measurement and control device of butterfly valve |
| CN203587423U (en) * | 2013-09-30 | 2014-05-07 | 南京白云化工环境监测有限公司 | Pressure blowing concentrator with variable air supply rate |
-
2013
- 2013-09-30 CN CN201310457829.XA patent/CN103487314A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH689628A5 (en) * | 1995-08-04 | 1999-07-15 | Rolf Hofer | Apparatus for sample concentration |
| CN201034880Y (en) * | 2007-04-19 | 2008-03-12 | 中国科学院生态环境研究中心 | Nitrogen blowing instrument |
| CN201819828U (en) * | 2010-08-31 | 2011-05-04 | 潍坊瑞格测试仪器有限公司 | Nitrogen blowing concentrator |
| CN202209468U (en) * | 2011-08-13 | 2012-05-02 | 无锡杰尔压缩机有限公司 | Flow measurement and control device of butterfly valve |
| CN203587423U (en) * | 2013-09-30 | 2014-05-07 | 南京白云化工环境监测有限公司 | Pressure blowing concentrator with variable air supply rate |
Non-Patent Citations (1)
| Title |
|---|
| 上海新拓分析仪器科技有限公司: "氮吹仪的原理及应用", 《食品安全导刊》, 31 December 2010 (2010-12-31), pages 54 - 55 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370506A (en) * | 2016-11-03 | 2017-02-01 | 北京普立泰科仪器有限公司 | Method and device for improving concentration speed of diameter-variable concentration cup |
| CN108020456A (en) * | 2018-01-24 | 2018-05-11 | 农业部渔业环境及水产品质量监督检验测试中心（天津）（天津市质量监督检验站第二十三站、天津市渔业环境及水产品质量监督检验测试中心） | Nitrogen evaporator and nitrogen evaporator test tube mounting base |
| CN108020456B (en) * | 2018-01-24 | 2024-02-13 | 农业部渔业环境及水产品质量监督检验测试中心（天津）（天津市质量监督检验站第二十三站、天津市渔业环境及水产品质量监督检验测试中心） | Nitrogen blows appearance and nitrogen blows appearance test tube mount pad |
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Application publication date: 20140101 |