CN104374631B - Nitrogen blowing instrument - Google Patents
Nitrogen blowing instrument Download PDFInfo
- Publication number
- CN104374631B CN104374631B CN201410750426.9A CN201410750426A CN104374631B CN 104374631 B CN104374631 B CN 104374631B CN 201410750426 A CN201410750426 A CN 201410750426A CN 104374631 B CN104374631 B CN 104374631B
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- plate
- gas
- base
- heating plate
- mozzle
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Abstract
The invention discloses a nitrogen blowing instrument discloses a nitrogen blowing instrument which comprises a gas inlet connecting tube, gas mass flowmeters, branch guide tubes, a gas distribution device and a preheating system. The output end of the gas inlet connecting tube is connected with the gas distribution device. The gas distribution device is disposed in the middle of a guide tube back plate. A plurality of gas feeding passages connected with the branch guide tubes are formed in the guide tube back plate. The gas mass flowmeters are correspondingly disposed at the gas feeding passages. The preheating system comprises a heating plate and a stainless steel plate. The heating plate is of a double-side heated type. The heating plate is in circuit connection with a control circuit board. The front side of the heating plate corresponds to the bottom of a sample seat hole, and the back side thereof corresponds to the stainless steel plate. The nitrogen blowing instrument is simple and reasonable in structure, and experiment efficiency is increased.
Description
Technical field
The present invention relates to a kind of Nitrogen evaporator, more particularly to a kind of nitrogen purging instrument for sample concentration, belong to sample dense
Compression apparatus technical field.
Background technology
Sample concentration is the problem that each chemical laboratory will be related to.In the past, mainly entered using Rotary Evaporators
Row concentration, but, carry out concentration shortcoming using Rotary Evaporators obvious:Concentration speed is slow, and troublesome poeration is not particularly suitable in a small amount
Sample.In the case, Nitrogen evaporator arises at the historic moment, and it is not only solved using all shortcomings of Rotary Evaporators, especially suitable
In samples multiple in a small amount, and for sample can not heating or even needing cooling concentration, then can only even more use Nitrogen evaporator
Concentrated, therefore, what Nitrogen evaporator became each chemical laboratory must match somebody with somebody instrument.
Nitrogen dries up instrument (Termovap Sample Concentrator) and is also called：Nitrogen enrichment facility, nitrogen purging
Instrument, nitrogen blows concentrating instrument, referred to as：Nitrogen evaporator, nitrogen flushing instrument, for the sample preparation in liquid phase, gas phase and mass spectral analysis.Due to nitrogen
It is a kind of inactive gas, starvation, anti-oxidation can be played a part of.Nitrogen evaporator by nitrogen rapidly, continuously, controllably
Blow to heating sample surfaces, realize the rapid concentration of a large amount of samples, with saving time, it is easy to operate, the characteristics of be easily controlled, can
Quickly obtain expected results, therefore, Nitrogen evaporator is widely used in farming residual analysis, commodity inspection, food, environment, pharmacy, biological system
The industries such as product.
Generally, Nitrogen evaporator is made up of heater, sample positioning device and the part of feeder three.Nitrogen is through supply dress
The gas blow pipe put is blown into and is fixed on sample positioning device the shuttle being placed in heater, makes sample in shuttle
In organic solvent volatilize rapidly, so as to realize the concentration to sample.Also there is following weak point in current Nitrogen evaporator：
1. the height of gas blow pipe adjusts inconvenient, and feeder is fixed on support, needs the height for adjusting feeder
When, just need manually to loosen bearing, the regulation of height is then carried out again, it is very inconvenient.In addition, circular water-bath Nitrogen evaporator
Lifting rely primarily on middle studdle it is hollow in screw mandrel lifting realizing；This mode is limited only to the side of heating water bath
Formula, adds thermal medium then improper for dry types such as aluminium blocks, because the general temperature of aluminium block heating is higher, drives and is located at interposition
Put, electrode fixes not aspect and is easy to be burned.
2. nitrogen is entered before blow needle, and feeder sends into gas at inlet suction port from the bottom of Nitrogen evaporator device.It is logical
For often, existing Nitrogen evaporator is entered from one end of the vent board of inlet suction port, is then serially entered in vent board and is blown
Needle passageway.This mode, the air-flow cause not of uniform size being easily caused between each blow needle passage, the channel airflow of close air inlet
Minimum away from the air-flow of inlet port than larger, the progress of each passage is inconsistent when ultimately resulting in process sample, affects same
The comparability of batch sample, or even result of the test is impacted.
3. for the flow of the nitrogen entered from blow needle passage needs to be concentrated product to regulate and control according to different, mesh
Before, the mode of flow is controlled mainly using pressure gauge or spinner flowmeter.All there is precision in pressure gauge and spinner flowmeter
Than relatively low defect, it is impossible to the accurately and reliably digit basis of offer one are tested, influence whether the final result tested.
4. for heater, existing instrument without preheating system or is either individually to install one plus hot charging additional
Put.If without preheating system, gas at normal temperature during experiment consumption than larger, thereby increases and it is possible to the time ratio of needs
Longer, test efficiency is lower.Individually install preheating apparatus additional to be relatively difficult to realize the heating Complete Synchronization with heat block, separately
Outward, instrument additionally takes up room and to instrument integrally using impacting.
The content of the invention
It is an object of the invention to：For above-mentioned problem, there is provided a kind of Nitrogen evaporator, existing Nitrogen evaporator work is solved
Inefficient technical problem such that it is able to effectively solve shortcoming present in above-mentioned prior art.
The technical scheme is that what is be achieved in that：A kind of Nitrogen evaporator, including base, cover plate, bracing frame, the mozzle back of the body
Plate and blow needle, support frame as described above is perpendicularly fixed at the rear portion of base, and blow needle is fixed on the blow needle vertical with mozzle backboard to be fixed
On plate, base is provided with sample bore, and the blow needle is corresponded with sample bore, and the cover plate is used to cover the specimen holder
Hole, is provided with control board in base, also including inlet pipe connection, gas mass flow gauge, branch's mozzle, air distributing device and
Preheating system；The output end of the inlet pipe connection is connected with air distributing device, and the air distributing device is arranged at mozzle backboard
Middle part, several plenum ducts being connected with branch mozzle are opened up on mozzle backboard, gas mass flow gauge is correspondingly arranged
At plenum duct；The preheating system includes heating plate and corrosion resistant plate, and the heating plate is two-sided heated, heating plate
It is connected with control board circuit, the front of heating plate is corresponding with the bottom of sample bore, and the back side is corresponding with corrosion resistant plate,
The corrosion resistant plate one side relative with heating plate is provided with groove, and the inlet pipe connection is fastened on groove.
Preferably, also including electric lifting mechanism, the electric lifting mechanism includes that gas control valve and height are adjusted
Bar, support frame as described above is provided with vertical groove, and height regulating rod is fixed in the groove at the back side of mozzle backboard
One height adjustment fixing plate, the height adjustment fixing plate is slidably arranged on height regulating rod, the inlet pipe connection it is defeated
Enter end to be connected with gas control valve.
Preferably, also including external drainpipe, the heating plate is arranged at the lower section in specimen holder bottom hole portion, the sample
The bottom of bore is provided with osculum, and one end of external drainpipe is tightly connected with the osculum, and the other end of external drainpipe is put
Outside base.
Used as further preferred, also including bolt retainer, the sample bore is bolted the shell of part and base
Body is detachably connected；Or, also including Waterproof glue line, the Waterproof glue line is arranged between sample bore and the housing of base.
Used as further preferred, external drainpipe is provided with control valve.
Preferably, being provided with flow control valve on the inlet pipe connection of air distributing device entrance.
Preferably, gas mass flow gauge is connected with control board circuit, LCDs is provided with base, is controlled
Circuit board processed is connected with LCDs circuit.
Preferably, the groove is sinusoidal structure, its one end is arranged at the side of heating plate, and the other end is arranged at and adds
The relative opposite side of hot plate.
Compared with prior art, beneficial effects of the present invention：Nitrogen evaporator of the present invention it is simple and reasonable for structure, pass through
For the improvement of structure, following technique effect is realized：
1st, supply is more uniform, by the way of middle supply, solves the homogeneity question of gas, is easy to same batch sample
The contrast test observation of product, while also improving the efficiency of test；
2nd, flow control is accurately carried out, using mass flowmenter, for the flow velocity of gas realizes that total digitalization shows control
System, for test safe and reliable digit basis are provided, beneficial to the difference that different requirements, different types of sample on market need
The selection of experimental condition；
3rd, preheating system is set in the lower section of heat block, the volume that takes up room is smaller, does not affect the letter of instrumentation
Just property；Energy saving and the pre-add heat effect to purge gas is reached in short stroke；Preheating for gas improves test
Efficiency, shorten the process time of test；
4th, water-bath and dry type are general so that the range of application of same Nitrogen evaporator is more extensive.
5th, electronic height is adjusted, and by electric lifting mechanism, accurate, stable lifting platform control is realized, while master control borad
Also defencive function is set with to gas control valve, it is to avoid the generation of contingency.
Description of the drawings
Fig. 1 is the dimensional structure diagram of the present invention.
Fig. 2 is the schematic rear view of mozzle backboard in Fig. 1.
Fig. 3 is the schematic diagram of the side with base section of Nitrogen evaporator of the present invention.
Fig. 4 is the generalized section of sample bore.
Fig. 5 is the positive structure schematic of corrosion resistant plate.
Mark in figure：Base 1, cover plate 2, sample bore 3, inlet pipe connection 4, blow needle fixed plate 5, mozzle backboard 6,
Support 7, height regulating rod 8, gas mass flow gauge 9, branch's mozzle 10, blow needle 11, LCDs 12, flow control valve
13, height adjustment fixing plate 14, control board 16, heating plate 17, gas control valve 18, Waterproof glue line 19, corrosion resistant plate 20,
Control valve 21, bolt retainer 22, air-vent 23, air distributing device 24, groove 25, external drainpipe 26.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is right below in conjunction with drawings and Examples
The technology of the present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain this
It is bright, it is not intended to limit the present invention.
Embodiment：As Fig. 1,2,3, shown in 4,5,
A kind of Nitrogen evaporator, including base 1, cover plate 2, bracing frame 7, inlet pipe connection 4, mozzle backboard 6, blow needle 11, enter
Gas connecting tube 4, gas mass flow gauge 9, branch's mozzle 10, air distributing device 24 and preheating system.Support frame as described above 7 is vertical
The rear portion of base 1 is fixed on, for supporting blowning installation.Blow needle 11 is fixed on the blow needle fixed plate 5 vertical with mozzle backboard 6
On, base 1 is provided with sample bore 3, and the blow needle 11 is corresponded with sample bore 3.Cover plate 2 is used to cover sample bore 3.
The side of base 1 is provided with air-vent 23.Control board 16 is provided with base 1.
Wherein：The output end of the inlet pipe connection 4 is connected with air distributing device 24, and the air distributing device 24 is arranged at water conservancy diversion
The middle part of pipe backboard 6, opens up several plenum ducts being connected with branch mozzle 10, gas mass flow on mozzle backboard 6
Meter 9 is correspondingly arranged at plenum duct.The gas mass flow gauge 9 is arranged on the inlet end of branch's mozzle 10, gas
Mass flowmenter 9 is connected with the circuit of control board 16, and the use of gas mass flow gauge is controlled by circuit board, meanwhile,
The signal collected is fed back to control board by gas mass flow gauge, and LCDs 12 is provided with base 1, control
Circuit board 16 is connected with the circuit of LCDs 12, and the data of final gas mass flow gauge collection will be directly perceived from LCDs
Reflect.For the flow velocity of gas realizes totally digitilized display control, safe and reliable digit basis are provided for test,
It is more convenient for groping experimental condition in the scientific research stage, also difference requires the different examinations that different types of sample needs more conducively on market
Test the selection of condition.
By the uniformity for preheating the temperature of supplied gas and examined test tube bottom temp to realize.It is described to preheat
System includes heating plate 17 and corrosion resistant plate 20, and the heating plate 17 is the silicone rubber plate of two-sided heated.Heating plate 17 and control
The circuit of circuit board processed 16 connects, and is powered by control board.The front of heating plate 17 is relative with the bottom of sample bore 3
Should, the back side is corresponding with corrosion resistant plate 20, and the one side relative with heating plate 17 of the corrosion resistant plate 20 is provided with groove 25, described
Inlet pipe connection 4 is fastened on groove 25.Preheating system is set in the base of Nitrogen evaporator, heating plate by with control circuit
Plate circuit connects and realizes power supply, and heating plate is two-sided to be heated, and positive heat is used to supply sample tube in sample bore
Heating, the heating of the inlet pipe connection in the heat supply corrosion resistant plate upper groove at the back side so that the gas on bottom-heated and top
Body heating can realize synchronization, share a price signal, it is ensured that the temperature conditionss of gas are consistent with the temperature of heat block, this
Sample is more energy efficient more efficient.
The groove 25 can also be arranged at the side of heating plate 17 for sinusoidal connected in star, its one end, and the other end is arranged at
The relative opposite side of heating plate 17.Inlet pipe connection adopts curve stroke on corrosion resistant plate 20, it is ensured that gas in short distance
Sufficiently it is heated.
The electric lifting mechanism includes gas control valve 18 and height regulating rod 8, and support frame as described above 7 is provided with vertical
Groove, height regulating rod 8 fixes a height adjustment fixing plate 14, the height in the groove at the back side of mozzle backboard 6
Degree adjustment fixing plate 14 is slidably arranged on height regulating rod 8, input and the phase of gas control valve 18 of the inlet pipe connection 4
Even.Control board 16 is provided with the base 1, gas control valve 18 is arranged in base 1, and with the circuit of control board 16
Connection.Limit switch is provided with gas control valve 18, the limit switch is connected with control board 16.Control board 16 pairs
Gas control valve 18 is preset with defencive function, goes wrong if located in the limit switch at gas control valve two ends or program goes out
Existing problem, will in time feed back to control board 16, and control board 16 is made in time emergency response, electric lifting mechanism is entered
Row braking in time, in time brake, is not destroyed with protection test.Control gas control valve 18 is provided with the trailing flank of base 1
Control button.Mode that can be manually is controlling the lifting and opening and closing of gas control valve.
In order to realize that supply is uniform, flow control valve 13 is provided with the inlet pipe connection 4 of the entrance of air distributing device 24, is used
The flow of gas, prevents flow excessive and accidents caused in control inlet pipe connection 4.Open up on mozzle backboard 6 it is several with
The connected plenum duct of branch's mozzle 10, gas mass flow gauge 9 is correspondingly arranged at plenum duct, a gas mass flow
Gauge one plenum duct of correspondence, so easily can carry out the control and regulation of air-flow hydraulic pressure to each passage.Blow needle
11 are fixed in the blow needle fixed plate 5 vertical with mozzle backboard 6, and the base 1 is provided with sample bore 3, the blow needle 11
It is corresponding with the position of sample bore 3, realize concentration process.
The plenum system of air distributing device is, from middle air inlet, progressively so to change to the two ends diffusion of mozzle backboard afterwards
The advantage entered is：The gas property uniform in size of each passage is good, has both been test with a batch of sample closer to synchronously completing
There is provided the reliable condition of paired observation, the efficiency of test is improve again, save the time that personnel constantly come and go observation sampling.
The bottom of the sample bore 3 is provided with osculum, and one end of external drainpipe 26 is tightly connected with the osculum, outward
The other end of water pipe 26 of running in is placed in outside base 1.The water pipe 26 that runs in outside is provided with control valve 21, for controlling external draining
The open and close of pipe.
In addition, the fixed form of sample bore 3 includes two kinds of bolt and bonding, for possessing, also including Waterproof glue line 19
With bolt retainer 22, the Waterproof glue line 19 is arranged between the housing of sample bore 3 and base 1.Sample bore is by anti-
Gelatine layer is bonded on the housing of base, for once fixing, meanwhile, when preventing heating water bath, the seepage of aqueous medium.Separately
Outward, the sample bore 3 is bolted part 22 and is detachably connected with the housing of base 1.
The present invention therefore, it can effectively realize water-bath Nitrogen evaporator because containing heating plate and external drainpipe simultaneously
And the conversion between dry type Nitrogen evaporator.When needing dry type to heat, water need not be filled in sample bore, it is only necessary to by control
Circuit board after heating plate is opened, is electrically heated controlling heating plate to the test tube in sample bore.But need heating water bath
When, closing control valve so that sample bore forms the space of a closing, aqueous medium is subsequently adding, in sample bore
Test tube is heated.After heating is finished, by opening control valve, the water allowed in sample bore is discharged to from external drainpipe
Outside base.So it is achieved that dry type and water-bath are general, and does not affect any heat conductivility.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (7)
1. a kind of Nitrogen evaporator, including base (1), cover plate (2), bracing frame (7), mozzle backboard (6) and blow needle (11), described
Support (7) is perpendicularly fixed at the rear portion of base (1), and blow needle (11) is fixed on the blow needle fixed plate vertical with mozzle backboard (6)
(5) on, base (1) is provided with sample bore (3), and the blow needle (11) corresponds with sample bore (3), the cover plate (2)
Control board (16) is provided with for covering in the sample bore (3), base (1), also including inlet pipe connection (4), gas
Mass flowmenter (9), branch's mozzle (10), air distributing device (24) and preheating system；The output of the inlet pipe connection (4)
End is connected with air distributing device (24), and the air distributing device (24) is arranged at the middle part of mozzle backboard (6), mozzle backboard (6)
On open up several plenum ducts being connected with branch's mozzle (10), gas mass flow gauge (9) is correspondingly arranged in plenum duct
Place；The preheating system includes heating plate (17) and corrosion resistant plate (20), and the heating plate (17) is two-sided heated, heating
The front of plate (17) is corresponding with the bottom of sample bore (3), and the back side is corresponding with corrosion resistant plate (20), the corrosion resistant plate
(20) one side relative with heating plate (17) is provided with groove (25), and the inlet pipe connection (4) is fastened on groove (25), its
It is characterised by：Also include external drainpipe (26), the heating plate (17) is arranged at the lower section of sample bore (3) bottom, heats
Plate (17) is connected with control board (16) circuit, and the bottom of the sample bore (3) is provided with osculum, external drainpipe (26)
One end be tightly connected with the osculum, the other end of external drainpipe (26) is placed in base (1) outward.
2. Nitrogen evaporator according to claim 1, it is characterised in that：Also include electric lifting mechanism, the electric lift
Structure includes gas control valve (18) and height regulating rod (8), and support frame as described above (7) is provided with vertical groove, height regulating rod
(8) in the groove, a height adjustment fixing plate (14) is fixed at the back side of mozzle backboard (6), the height adjusts solid
Fixed board (14) is slidably arranged on height regulating rod (8), input and gas control valve (18) phase of the inlet pipe connection (4)
Even.
3. Nitrogen evaporator according to claim 1, it is characterised in that：Also include bolt retainer (22), the sample bore
(3) it is bolted part (22) to be detachably connected with the housing of base (1)；Or, it is described anti-also including Waterproof glue line (19)
Gelatine layer (19) is arranged between the housing of sample bore (3) and base (1).
4. Nitrogen evaporator according to claim 3, it is characterised in that：External drainpipe (26) is provided with control valve (21).
5. Nitrogen evaporator according to claim 1, it is characterised in that：In the inlet pipe connection of air distributing device (24) entrance
(4) it is provided with flow control valve (13).
6. Nitrogen evaporator according to claim 1, it is characterised in that：Gas mass flow gauge (9) and control board (16)
Circuit connects, and LCDs (12) is provided with base (1), and control board (16) connects with LCDs (12) circuit
Connect.
7. Nitrogen evaporator according to claim 1, it is characterised in that：The groove (25) is sinusoidal structure, and its one end sets
The side of heating plate (17) is placed in, the other end is arranged at the relative opposite side of heating plate (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410750426.9A CN104374631B (en) | 2014-12-10 | 2014-12-10 | Nitrogen blowing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410750426.9A CN104374631B (en) | 2014-12-10 | 2014-12-10 | Nitrogen blowing instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104374631A CN104374631A (en) | 2015-02-25 |
| CN104374631B true CN104374631B (en) | 2017-04-19 |
Family
ID=52553680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410750426.9A Expired - Fee Related CN104374631B (en) | 2014-12-10 | 2014-12-10 | Nitrogen blowing instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN104374631B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107649304B (en) * | 2016-07-25 | 2021-08-24 | 诺信公司 | Heating plate for glue machine and glue machine comprising same |
| CN106442092B (en) * | 2016-11-03 | 2023-03-07 | 睿科集团(厦门)股份有限公司 | Drawer device capable of automatically inserting nitrogen blowing needle into concentrated test tube |
| CN108680426B (en) * | 2018-05-16 | 2021-12-24 | 天津博纳艾杰尔科技有限公司 | Nitrogen blowing instrument |
| CN110132708A (en) * | 2019-05-30 | 2019-08-16 | 中山市农产品质量监督检验所 | A kind of new type auto lifting nitrogen evaporator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2745063Y (en) * | 2004-11-19 | 2005-12-07 | 杭州蓝焰科技有限公司 | Nitrogen evaporator |
| CN201491771U (en) * | 2009-09-25 | 2010-06-02 | 任銮 | Heating plate for press ironing machine |
| CN201689004U (en) * | 2010-06-08 | 2010-12-29 | 济南海能仪器有限公司 | Nitrogen blowing instrument preheating distribution device |
| CN201819828U (en) * | 2010-08-31 | 2011-05-04 | 潍坊瑞格测试仪器有限公司 | Nitrogen blowing concentrator |
| CN204255746U (en) * | 2014-12-10 | 2015-04-08 | 成都雅源科技有限公司 | A kind of Nitrogen evaporator |
-
2014
- 2014-12-10 CN CN201410750426.9A patent/CN104374631B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2745063Y (en) * | 2004-11-19 | 2005-12-07 | 杭州蓝焰科技有限公司 | Nitrogen evaporator |
| CN201491771U (en) * | 2009-09-25 | 2010-06-02 | 任銮 | Heating plate for press ironing machine |
| CN201689004U (en) * | 2010-06-08 | 2010-12-29 | 济南海能仪器有限公司 | Nitrogen blowing instrument preheating distribution device |
| CN201819828U (en) * | 2010-08-31 | 2011-05-04 | 潍坊瑞格测试仪器有限公司 | Nitrogen blowing concentrator |
| CN204255746U (en) * | 2014-12-10 | 2015-04-08 | 成都雅源科技有限公司 | A kind of Nitrogen evaporator |
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| CN104374631A (en) | 2015-02-25 |
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Effective date of registration: 20200616 Address after: No.4, 2 / F, unit 2, building 3, No.7, South Section 1, 2nd Ring Road, Wuhou District, Chengdu, Sichuan 610000 Patentee after: Kong Deqi Address before: Wuhou District Chengdu City, Sichuan province Jiangxi Street 610000 No. 16 1 unit 1 Building 2 floor No. 8 Patentee before: CHENGDU YAYUAN TECHNOLOGY Co.,Ltd. |
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Granted publication date: 20170419 Termination date: 20211210 |
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