CN204255740U - A kind of Nitrogen evaporator controlling flow - Google Patents
A kind of Nitrogen evaporator controlling flow Download PDFInfo
- Publication number
- CN204255740U CN204255740U CN201420772665.XU CN201420772665U CN204255740U CN 204255740 U CN204255740 U CN 204255740U CN 201420772665 U CN201420772665 U CN 201420772665U CN 204255740 U CN204255740 U CN 204255740U
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- flow
- mozzle
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Abstract
The utility model discloses a kind of Nitrogen evaporator controlling flow, comprise base, bracing frame and mozzle backboard, support frame as described above is vertically fixed on the rear portion of base, mozzle backboard slides and is arranged on bracing frame, control circuit board is provided with in base, also comprise mass-flow gas meter and branch's mozzle, described mass-flow gas meter is arranged on the inlet end of branch's mozzle, mass-flow gas meter is connected with control circuit board circuit, base is provided with LCDs, and control circuit board is connected with LCDs circuit.The Nitrogen evaporator of control flow described in the utility model simple and reasonable for structure, by the improvement for structure, achieve and carry out flow control accurately, adopt mass flowmeter, flow velocity for gas realizes totally digitilized display and control, for test provides safe and reliable digit basis, be beneficial to choosing of the different tests condition that on market, different requirement, different types of sample need.
Description
Technical field
The utility model relates to a kind of Nitrogen evaporator controlling flow, particularly relates to a kind of nitrogen for sample concentration and purges instrument, belong to sample concentration device technique field.
Background technology
Sample concentration is the problem that each chemical laboratory will relate to.In the past, Rotary Evaporators was mainly adopted to concentrate, but, adopt Rotary Evaporators to carry out concentrated shortcoming obvious: concentrated speed is slow, and troublesome poeration, is especially not suitable for low-volume samples.In the case, Nitrogen evaporator arises at the historic moment, it not only solves all shortcomings adopting Rotary Evaporators, be particularly useful for samples multiple in a small amount, and for the sample even needing cooling concentration that can not heat, Nitrogen evaporator then can only be used especially to concentrate, and therefore, what Nitrogen evaporator became each chemical laboratory must join instrument.
Nitrogen dries up instrument (Termovap Sample Concentrator) and is also called: nitrogen enrichment facility, nitrogen purge instrument, and nitrogen blows concentrating instrument, is called for short: Nitrogen evaporator, nitrogen flushing instrument, for the sample preparation in liquid phase, gas phase and mass spectrophotometry.Because nitrogen is a kind of inactive gas, the effect of starvation can be played, anti-oxidation.Nitrogen rapidly, continuously, is controllably blown to heated sample surface by Nitrogen evaporator, realize the rapid concentration of a large amount of sample, have save time, easy to operate, hold manageable feature, can be very fast obtain expected results, therefore, Nitrogen evaporator is widely used in the industries such as farming residual analysis, commodity inspection, food, environment, pharmacy, biological products.
Usually, Nitrogen evaporator by heating arrangement, sample positioning device and feeder three part form.Nitrogen is blown into through the gas blow pipe of feeder and is fixed on sample positioning device and is placed in the sampling receptacle of heating arrangement, and the organic solvent in sampling receptacle in sample is volatilized rapidly, thus it is concentrated to realize sample.Also there is following weak point in current Nitrogen evaporator:
Flow for the nitrogen entered from blow needle passage needs to be concentrated product to regulate and control according to different, and at present, the mode controlling flow mainly uses tensimeter or spinner-type flowmeter.All there is the low defect of precision comparison in tensimeter and spinner-type flowmeter, can not provide a digit basis accurately and reliably, can have influence on the net result of test to test.
Summary of the invention
The purpose of this utility model is: for above-mentioned Problems existing, provides a kind of Nitrogen evaporator controlling flow, solves the technical matters that existing Nitrogen evaporator flow control is not good, thus can effectively solve the shortcoming existed in above-mentioned prior art.
The technical solution of the utility model is achieved in that a kind of Nitrogen evaporator controlling flow, comprise base, bracing frame and mozzle backboard, support frame as described above is vertically fixed on the rear portion of base, mozzle backboard slides and is arranged on bracing frame, control circuit board is provided with in base, also comprise mass-flow gas meter and branch's mozzle, described mass-flow gas meter is arranged on the inlet end of branch's mozzle, mass-flow gas meter is connected with control circuit board circuit, base is provided with LCDs, and control circuit board is connected with LCDs circuit.
As preferably, the Nitrogen evaporator of control flow described in the utility model, also comprises blow needle, and blow needle is fixed on the blow needle fixed head vertical with mozzle backboard.
As preferably, the Nitrogen evaporator of control flow described in the utility model, described base is provided with sample bore, and described blow needle is corresponding with the position of sample bore.
Compared with prior art, the beneficial effects of the utility model: the Nitrogen evaporator of control flow described in the utility model simple and reasonable for structure, by the improvement for structure, achieve and carry out flow control accurately, adopt mass flowmeter, flow velocity for gas realizes totally digitilized display and control, for test provides safe and reliable digit basis, is beneficial to choosing of the different tests condition that on market, different requirement, different types of sample need.
Accompanying drawing explanation
Fig. 1 is the perspective view in the utility model embodiment 1.
Mark in figure: base-1, sample bore-3, blow needle fixed head-5, mozzle backboard-6, bracing frame-7, mass-flow gas meter-9, branch's mozzle-10, blow needle-11, LCDs-12, control circuit board-16.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model technology is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, embodiment 1:
Control a Nitrogen evaporator for flow, comprise base 1, bracing frame 7, mozzle backboard 6, mass-flow gas meter 9, branch's mozzle 10 and blow needle 11.Support frame as described above 7 is vertically fixed on the rear portion of base 1, and mozzle backboard 6 slides and is arranged on bracing frame 7, and mozzle backboard can slide on bracing frame.Described blow needle 11 is fixed on the blow needle fixed head 5 vertical with mozzle backboard 6; Described base 1 is provided with sample bore 3, and described blow needle 11 is corresponding with the position of sample bore 3, by being blown into gas from blow needle, concentrates the sample in sample bore 3, realizes the concentrated of product.Control circuit board 16 is provided with in base 1, described mass-flow gas meter 9 is arranged on the inlet end of branch's mozzle 10, mass-flow gas meter 9 is connected with control circuit board 16 circuit, the use of mass-flow gas meter is controlled by circuit board, simultaneously, mass-flow gas meter by the signal feedback collected to control circuit board, base 1 is provided with LCDs 12, control circuit board 16 is connected with LCDs 12 circuit, and the data of final mass-flow gas meter collection will reflect intuitively from LCDs.Flow velocity for gas realizes totally digitilized display and control, for test provides safe and reliable digit basis, is more convenient for groping test condition in the scientific research stage, is also more conducive to choosing of the different tests condition that on market, difference requires different types of sample to need.
Mass-flow gas meter preferably keeps installed surface level when installing, but inresponsive especially to position, can installing optional position, as found zero migration during non-horizontal mounting, working after Adjustable Zero again.
It is of the present utility model that to realize principle as follows:
What mass-flow gas meter was measured is the mass rate of gas, and when gas pressure change, mass flow controller accurately can control the flow of gas, is because it measures is the mass rate of gas, instead of volumetric flow rate.
Gas mass flow represents by the volumetric flow rate under standard state usually, and the unit of mass rate is:
SCCM-standard milliliters/minute;
SLM-standard liter/min;
In normal conditions, the density of gas is a constant, and it is exactly mass rate that density is multiplied by volumetric flow rate, so the volumetric flow rate under standard state is just equal to mass rate.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. one kind controls the Nitrogen evaporator of flow, comprise base (1), bracing frame (7) and mozzle backboard (6), support frame as described above (7) is vertically fixed on the rear portion of base (1), mozzle backboard (6) slides and is arranged on bracing frame (7), control circuit board (16) is provided with in base (1), it is characterized in that: also comprise mass-flow gas meter (9) and branch's mozzle (10), described mass-flow gas meter is arranged on the inlet end of branch's mozzle (10), mass-flow gas meter (9) is connected with control circuit board (16) circuit, base (1) is provided with LCDs (12), control circuit board (16) is connected with LCDs (12) circuit.
2. the uniform Nitrogen evaporator of air feed according to claim 1, is characterized in that: also comprise blow needle (11), and blow needle (11) is fixed on the blow needle fixed head (5) vertical with mozzle backboard (6).
3. the uniform Nitrogen evaporator of air feed according to claim 2, is characterized in that: described base (1) is provided with sample bore (3), and described blow needle (11) is corresponding with the position of sample bore (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420772665.XU CN204255740U (en) | 2014-12-10 | 2014-12-10 | A kind of Nitrogen evaporator controlling flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420772665.XU CN204255740U (en) | 2014-12-10 | 2014-12-10 | A kind of Nitrogen evaporator controlling flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204255740U true CN204255740U (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420772665.XU Expired - Fee Related CN204255740U (en) | 2014-12-10 | 2014-12-10 | A kind of Nitrogen evaporator controlling flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204255740U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560927A (en) * | 2017-10-13 | 2018-01-09 | 苏州市苏测检测技术有限公司 | Efficient nitrogen evaporator |
-
2014
- 2014-12-10 CN CN201420772665.XU patent/CN204255740U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560927A (en) * | 2017-10-13 | 2018-01-09 | 苏州市苏测检测技术有限公司 | Efficient nitrogen evaporator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20171210 |