CN105092356B - A kind of adjustable automated fluid volume quantitative of precision and method for concentration - Google Patents
A kind of adjustable automated fluid volume quantitative of precision and method for concentration Download PDFInfo
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- CN105092356B CN105092356B CN201510586102.0A CN201510586102A CN105092356B CN 105092356 B CN105092356 B CN 105092356B CN 201510586102 A CN201510586102 A CN 201510586102A CN 105092356 B CN105092356 B CN 105092356B
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Abstract
A kind of adjustable automated fluid volume quantitative of precision and method for concentration, belong to testing field.It realizes the function of more options rapid concentration and High Precision Automatic volume quantitative by following assemblies；Component described in it at least includes：Evaporative component and automatic liquid level detection components are rocked in the infrastructure component that is arranged on basic component, temperature control component, air-blowing component, negative pressure extracting condensation, rotation.It can provide heating simultaneously, and revolving, negative pressure extracting, air-blowing etc. concentrates approach and selected for user, and user's selectivity is wide, flexibility is big, also accelerates experiment process, saving time and cost；Also, the position for the sensor for passing through two groups of low precision coordinates, the purpose for improving accuracy detection is reached, manufacturing cost is reduced.It can be widely used for the high-precision liquid level detection field of quantitative concentration process in chemical example pre-treatment.
Description
Technical field
The invention belongs to chemical analysis or testing field, more particularly to a kind of dosing liquid volume for chemical pre-treatment
And method for concentration.
Background technology
Analytical chemistry is the analysis method and theory for studying the chemical informations such as composition, content, structure and the form of material
A science.Idea is typically first wanted to separate different chemical compositions when analyzing sample.
Separation of the chemical pre-treatment exactly to analyzing sample heterogeneity, or interference component is removed, or change its state
Convenient determine etc. and do anticipate process, main extraction, purification, enrichment, derivatization including sample etc.；
Quantitative concentration is that developed recently gets up a kind of Sample Pretreatment Technique.
In terms of its concentration, mainly by heating, air-blowing, negative pressure extracting, the modes such as disengagement area are increased molten to accelerate sample
The volatilization of solvent in liquid, to reach the purpose of enrichment concentration；In equipment in terms of current concentration existing on the market, mainly pass through
More than one, two ways realize concentrating function, as Rotary Evaporators are concentrated by heating and increasing disengagement area,
As nitrogen evaporator is concentrated by heating and air-blowing mode.Few equipment for integrating all four modes, to meet
A variety of demands of user.
In terms of determined volume, prior art mainly has two ways, and one kind is manual type, i.e., observed by people, make it
Concave meniscus and corresponding scale are tangent, and it is big that this mode introduces human error, and scale it is limited (can not arbitrarily constant volume to certain one
Product), working strength is big, now fewer and fewer；Another is to use automatic identification technology, i.e., drive one by a mechanical arm
Liquid volume is detected to the level detection sensors device being made up of transmitting terminal and receiving terminal, it judges with the refraction principle of light
The position of liquid level, when the light that the light source of transmitting terminal is launched does not cross concave meniscus horizontal tangent critical localisation, light is passed perpendicularly through,
Direct irradiation (receives light intensity maximum) on the receive side；When the light that the light source of transmitting terminal is launched faces more than concave meniscus horizontal tangent
During boundary position, light will be through superrefraction, and receiving terminal is then connect by less than light, or the light intensity received is decreased obviously, so as to judge
Go out this position exactly concave meniscus position.
This mode can interpolate that out the position of concave meniscus, but due to the light beam launched of this level detection sensors device
Diameter is all than larger (light extraction diameter reaches 3mm as, mainly for reduction user installation difficulty), even if employing aperture light leak
Cover (such as diameter 0.5mm apertures) to reduce beam diameter, it is also difficult to meet the determined volume of some needs small volume high precisions
Determine.
And the equipment of correlation is only satisfied with concentration or volume quantitative simple function, both functions of collection mostly on the market at present
It is also seldom in the product of one.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of adjustable automated fluid volume quantitative of precision and concentration side
Method, it can provide heating simultaneously, and revolving, negative pressure extracting, air-blowing etc. concentrates approach and selected for user, and user's selectivity is wide, flexible
Property it is big, also accelerate experiment process, save time and cost；Also, the position for the sensor for passing through two groups of low precision coordinates, and reaches
The purpose for improving accuracy detection has been arrived, manufacturing cost is reduced.
The technical scheme is that to provide a kind of adjustable automated fluid volume quantitative of precision and method for concentration, it is special
Levying is：
Described dosing liquid volume and method for concentration realizes more options rapid concentration and high accuracy by following assemblies
The function of automatic volume quantitative；Component described in it at least includes：Be arranged on infrastructure component on basic component, temperature control component,
Evaporative component and automatic liquid level detection components are rocked in air-blowing component, negative pressure extracting condensation, rotation；
Wherein, on basic component, the infrastructure component equipped with constant volume chamber has been coupled by universal connector；Described basis
Component at least includes constant volume cavity, can cover automatically on the constant volume chamber of perforate and for fixing the branch of the constant volume cavity thereon
Support connector；Described constant volume chamber is the container with inside and outside two cavity, and a thin straight tube structure is arranged at inner chamber bottom；Described
The top and bottom of constant volume chamber, correspond to be provided with one group of temperature control component respectively.
Two groups of described temperature control components are respectively upper road closed loop temperature control system and lower road closed loop temperature control system
System；The top of the constant volume chamber is connected with upper road closed loop temperature control system, the bottom of constant volume chamber, with lower road closed loop temperature
Control system is connected.
Below support connector in infrastructure component, the rotation being fixed on basic component is coupled by ball bearing and has been shaken
Shake evaporative component.
By being covered on the constant volume chamber in infrastructure component, connection has air-blowing component all the way and negative pressure extracting condensation.
On basic component, relative to former and later two sides of constant volume chamber, automatic liquid level detection components are fixed with.
Described automatic liquid level detection components, using differential type dual sensor detection method, to realize automatic, high precision
Detection and liquid level detection；Described differential type dual sensor, including first and be made up of respectively two pairs of transmitting terminals and receiving terminal
Two level detection sensors devices；By the transmitting terminal and receiving terminal of the first and second level detection sensors device, correspond to install respectively
In a sensor group fixed plate, described sensor group fixed plate is fixed on a sensor support plate, sensor branch
Fagging is fixed on an elevating mechanism, and described elevating mechanism drives the differential type dual sensor group on sensor support plate same
Step makees upper and lower vertically move；By moving up and down for the first and second level detection sensors device, realize in constant volume chamber
Different liquid levels detected；Wherein, the setting height(from bottom) difference of the first and second level detection sensors devices is d, and two groups of liquid levels
The angle of detection sensor emergent shaft is β, and the longitudinal axis of the constant volume chamber is located at first and second level detection sensors
The overlapping region of two beam light extractions of device.
Specifically, described differential type dual sensor detection method, if the level detection of first and second sensor
Accuracy rating is a, and the setting height(from bottom) difference of the first and second level detection sensors device is d, then the first and second sensors two
The height of the lap of beam detection light, is the level detection accuracy rating of the first and second sensors, subtracts first and the
The numerical result a-d obtained by longitudinally mounted difference in height between two level detection sensors devices；Liquid level to be measured in the constant volume chamber
Decision rule be：When only two sensors have output signal simultaneously, it is judged to detecting liquid level；Now differential type double-sensing
The level detection precision of device group is a-d.
Specifically, described constant volume chamber is by hollow outer chamber and the inner chamber upper body being located therein, and on inner chamber
Below body, with thin straight tube structure inner chamber lower body composition, is provided with opening, described is interior above the inner chamber upper body
Chamber upper body is communicated with inner chamber lower body, and the lower end of the inner chamber lower body is enclosed construction.
Specifically, described upper road closed loop temperature control system is heating water bath formula closed loop thermal control system；It is described
Lower road closed loop temperature control system be heating/refrigerating modular closed loop thermal control system.
Specifically, evaporative component is rocked in described rotation, including motor on basic component, eccentric turn
Axle, ball bearing and the support connector for being connected to infrastructure component；Evaporative component is rocked in described rotation, by motor and bias
Rotating shaft provides rotary power, by the cooperation of universal connector, ball bearing and motor and eccentrically weighted shaft, reaches that rotation is rocked
The purpose of constant volume luminal solution；Evaporative component is rocked in described rotation, by the mesh for making infrastructure component and constant volume intracavitary therein
Standard liquid body is waved with the speed needed, so as to increase the disengagement area of liquid.
Specifically, described air-blowing component, the inert gas of air-blowing is provided by source of the gas, being adjusted through pressure adjusting module needs
After the pressure wanted, then the control of the switch through gas circuit control unit, ventilation blow needle is blown into the inner chamber upper body of constant volume chamber；Described gas
Blow needle and the inwall of inner chamber upper body have certain angle, in the inside of inner chamber upper body, to form eddy airstream.
Specifically, described negative pressure extracting condensation, the negative pressure produced by negative pressure generator, draw on inner chamber
The volatilization steam of the target liquid of body, described volatilization steam flows through Volatile Gas pin and condensing unit；Pass through on condensing unit top
Outside low-temperature circulating device condenses the volatilization steam of the target liquid flowed through, to reduce pollution of the volatilization steam to environment；Cold
Solidifying device bottom is equipped with condensate discharge valve, to discharge waste liquid by setup program, reduces environmental pollution.
Further, the size of the setting height(from bottom) difference d values of the first and second level detection sensors device, it is determined that to fixed
The accuracy of detection of liquid level in buret.
Further, described differential type dual sensor detection method, is examined by adjusting the beam of the first and second sensor two
Upper and lower height and position between light-metering line is poor, that is, adjusts the big of the first and second level detection sensors device setting height(from bottom) difference d values
It is small, to realize any regulation or setting to liquid level to be measured detection accuracy height in constant volume chamber.
The adjustable automated fluid volume quantitative of precision and method for concentration described in technical solution of the present invention, can simultaneously provide and add
Heat, the concentration approach such as revolving, negative pressure extracting, air-blowing is selected for user, user's selectivity is wide, flexibility greatly, also accelerate experiment
Process, has saved time and cost；Also, the position for the sensor for passing through two groups of low precision coordinates, reach that raising precision is examined
The purpose of survey, reduces manufacturing cost, is effectively reduced human error and labor intensity, improves the degree of accuracy of experimental result, from
And operating efficiency is improved, solution evaporation is reduced, the pollution to environment can be also reduced.
Compared with the prior art, it is an advantage of the invention that being
1. the technical program can provide heating simultaneously, revolving, negative pressure extracting, air-blowing etc. concentrates approach and selected for user or folded
Plus, user's selectivity is wide, flexibility is big, also accelerates experiment process, saves time and cost；
2. the technical program provides a kind of high-precision liquid level detecting strategy for transparency liquid；
3. the technical program provides a kind of full automatic adjustable level detection mechanism of precision, using the technical scheme,
Human error and labor intensity are effectively reduced, the degree of accuracy of experimental result is improved, so as to improve operating efficiency；
4. the control for folding and the condensation waste discharge that the technical program passes through thief hole, reduces solution evaporation, can also reduce
Pollution to environment；
5. the technical program reaches the purpose of high precision test by the sensor of two groups of low precision, reduce and be manufactured into
This.
Brief description of the drawings
Fig. 1 is existing concave meniscus Cleaning Principle schematic diagram；
Fig. 2 is the single unit system structural representation of the present invention；
Fig. 3 is the composition schematic diagram of infrastructure component；
Fig. 4 is the structural representation of constant volume cavity；
Fig. 5 is constant volume cavity lid structural representation；
Fig. 6 is constant volume cavity lid perforate schematic diagram；
Fig. 7 is the composition schematic diagram of temperature control component；
Fig. 8 is the composition schematic diagram of air-blowing component；
Fig. 9 is air-blowing draught effect schematic diagram；
Figure 10 is the composition schematic diagram of negative pressure extracting condensation；
Figure 11 is the composition schematic diagram that evaporative component is rocked in rotation；
Figure 12 is the composition schematic diagram of automatic liquid level detection components；
Figure 13 is differential type dual sensor Cleaning Principle schematic diagram；
Figure 14 is the workflow schematic diagram of the technical program；
Figure 15 is the sample introduction schematic flow sheet of the technical program；
Figure 16 is the concentration flow path schematic diagram of the technical program.
A1 is refracted light in figure, and a2 is critical ray, and a3 is direct projection light；
1 is constant volume chamber, and 2 be to be covered on constant volume chamber, and 3 be support connector, and 4 be heat block, and 5 be temperature sensor, and 6 be refrigeration
Module, 7 be water circulating pump, and 8 be temperature sensor, and 9 be bubbler, and 10 be heating water bath block, and 11 be source of the gas, and 12 be pneumatic control
Module, 13 be pressure display unit unit, and 14 be gas circuit control unit, and 15 be air-blowing pin, and 16 is extract volatilization air tube, and 17 be condensation
Device, 18 be low-temperature circulating device, and 19 be negative pressure generator, and 20 be condensate discharge valve, and 21 be structure based on universal connector, 22
Part, 23 be ball bearing, and 24 be eccentrically weighted shaft, and 25 be motor, and 26 be differential type dual sensor group, and 27 fix for sensor group
Plate, 28 be elevating mechanism, and 29 is take liquid pin, and 30 be feed liquor pin；
101 be outer chamber, and 102 be inner chamber upper body, and 103 be inner chamber lower body, and 104 be liquid interface, and 105 be into liquid interface；
201 be cavity lid, and 202 be sealing cushion for cover, and 203 be pin hole sealing gasket, and 204 be sealing gasket fixed block, and 205 be bullet
Spring, 206 be sliding block, and 207 be straight line driving mechanism；
201-1 is takes liquid pin hole, and 201-2 is combination inlet opening, and 201-3 is air-blowing pin hole, and 201-4 is volatilization stomata.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
In Fig. 1, existing concave meniscus detection method judges the position of liquid level with the refraction principle of light；When transmitting terminal
When the light of light source transmitting does not cross concave meniscus horizontal tangent critical localisation, light is passed perpendicularly through, and direct irradiation (connects on the receive side
Receive light intensity maximum), now referred to as direct projection light a3；When the light that the light source of transmitting terminal is launched faces more than concave meniscus horizontal tangent
During boundary position, light will be through superrefraction, and receiving terminal is then connect by less than light, now referred to as refracted light a1；Or receive
Light intensity is decreased obviously, so as to judge this position exactly concave meniscus position, now referred to as critical ray a2.
This mode can interpolate that out the position of concave meniscus, but due to the light beam launched of this level detection sensors device
Diameter is all than larger (light extraction diameter reaches 3mm as, mainly for reduction user installation difficulty), even if employing aperture light leak
Cover (such as diameter 0.5mm apertures) to reduce beam diameter, it is also difficult to meet the determined volume of some needs small volume high precisions
Determine.
In Fig. 2, there is provided a kind of adjustable automated fluid volume quantitative of precision and concentration side for technical scheme
Method, its inventive point is described dosing liquid volume and method for concentration realized by following assemblies more options rapid concentration and
The function of High Precision Automatic volume quantitative：Component described in it at least includes：Infrastructure component, temperature control component, air-blowing component, negative pressure
Extract condensation, rotation and rock evaporative component and automatic liquid level detection components.
The relative position and annexation of above-mentioned six components are as shown in Figure 2：On basic component 22, by universal
Fitting 21 has coupled the infrastructure component equipped with constant volume chamber 1；One group of temperature control component is respectively installed on the top and bottom of constant volume chamber 1；
Below support connector 3 in infrastructure component, the rotation being fixed on basic component 22 is coupled by ball bearing 23 and rocked
Evaporative component；By lid 2 on the constant volume chamber in infrastructure component, connection has air-blowing component all the way, and negative pressure extracting condensation；
On basic component 22, relative to two sides before and after constant volume chamber 1, automatic liquid level detection components are fixed with.
It is further detailed below for the concrete structure of each component.
One：Infrastructure component：
As shown in figure 3, be fixed with support connector 3 constant volume cavity 1 and thereon can be automatically on the constant volume chamber of perforate
Lid 2.
In Fig. 4, described constant volume chamber 1 is by outer chamber 101, and inner chamber upper body 102, inner chamber lower body 103 is constituted.
As seen from the figure, constant volume chamber 1 is the container with inside and outside two cavitys being made up of high borosilicate or quartz glass, and inner chamber
One thin straight tube structure is arranged at bottom.
Wherein, outer chamber 101 is mainly used in heating water bath, to ensure that the liquid in inner chamber upper body 102 reaches that we set
Temperature, have two interfaces thereon, to go out liquid interface 104 and entering liquid interface 105, water-bath all the way as in temperature control component circulation
Interface is provided；Inner chamber upper body 102 and inner chamber lower body 103 be mainly used in accommodate need concentrated, the target solution of determined volume.
, can lid 2 be that sealing cushion for cover 202 is housed in the lower opening of cavity lid 201 on the constant volume chamber of perforate automatically in Fig. 5；
Have hollow structure at the middle part of cavity lid 201, equipped with spring 205, sealing gasket fixed block 204, pin hole sealing gasket 203 sliding block
206 can freely move left and right in this hollow structure；Straight line driving mechanism 207 is directly connected with sliding block 206, drives sliding block
206 arrive required position.
In Fig. 6, on described cavity lid 201, it is provided with and takes liquid pin hole 201-1, combination inlet opening 201-2, air-blowing pin
Hole 201-3 and extraction volatilization stomata 201-4.
Be related in technical solution of the present invention can the cavity lid 2 of perforate automatically there is multi-functional use pore structure, and pass through
From the spring 205 of different coefficient of elasticity and decrement, to meet the sealing needs under different pressures；The drive mechanism of perforate
207 can be the structures such as cylinder, electromagnet and motor driving eccentric wheel.
Wherein, sealing cushion for cover 202 and pin hole sealing gasket 203 use polytetrafluoroethylene (PTFE) or are covered with the silicon of poly tetrafluoroethylene
Glue Composition spacer is made；Sealing gasket fixed block 204 is made of 316L stainless steels, to improve intensity and decay resistance.
Spring 205 can select different coefficient of elasticity and length (pre compressed magnitude), to meet constant volume chamber 1 in different pressures
Under sealing need.
Straight line driving mechanism 207 predominantly opens liquid outlet 201-1 and provides power, and its structure type can be with this specialty
There are many types, such as cylinder, electromagnet or the motor driving eccentric wheel structure of suitable stroke.
Two：Temperature control component
In Fig. 7, to accelerate concentration speed, at the inner chamber upper body 102 of constant volume chamber 1,103 liang of inner chamber lower body, correspond to respectively
In offer, the temperature control component of two-way closed loop, to provide the different temperatures needed for it.
In the upper and lower two-way closed loop temperature control system being related in technical solution of the present invention, the temperature control of lower road, which is used, to be had
The closed loop temperature control system of two kinds of functions of heating and refrigeration.
The part of inner chamber upper body 102 of constant volume chamber 1, because capacity is big, the heat required for reaching desired temperature is big, therefore uses
Heating water bath method, this road temperature control is connected by pipeline, using the recirculated water in the extraction bubbler 9 of water circulating pump 7 to constant volume chamber 1
Outer chamber 101 in, the recirculated water in bubbler 9 is heated by the heating water bath block 10 mounted in its bottom, using at the top of it
The feedback of temperature sensor 8 adjusts the heating power of heating water bath block 10, to reach the temperature required for outer chamber 101.
The inner chamber lower body 103 of constant volume chamber 1 is thin straight tube structure, is mainly used in high-precision volume quantitative and determines use, because of volume
Amount is small, and the heat required for reaching desired temperature is little, so road temperature control uses the direct-fired method of heat block, i.e., by solid
The heat block 4 for being scheduled on the periphery of inner chamber lower body 103 is heated to it, and temperature sensor 5 is separately housed in heat block 4, added to detect it
Hot temperature；Consider when solution body accumulated amount is close to target volume, to prevent volatilization overshoot phenomenon from (causing volume to be less than objective body
Product), it is necessary to temperature is lowered in time, therefore refrigeration module 6 is housed in the outside of heat block 4；Pass through the heating of heat block 4, refrigeration
The refrigeration of module 6 and the temperature feedback of temperature sensor 5 realize a temperature control closed loop, accurately to reach us in inner chamber
Temperature required for lower body 103.
Three：Air-blowing component
In fig. 8, to accelerate target solution evaporation rate, experimental period is reduced, the first line of a couplet of lid 2 is connected to air-blowing on constant volume chamber
Component.
Air-blowing component in technical solution of the present invention, is mainly provided the inert gas of air-blowing, through pressure by source of the gas 11
Its pressure value, then opening through gas circuit control unit 14 are shown by power display unit 13 after the pressure that the regulation of adjustment module 12 needs
Close after control, ventilation blow needle 15 is blown into the inner chamber upper body 102 of constant volume chamber 1；Air-blowing pin 15 and the inwall of inner chamber upper body 102 have one
Determine angle, to form eddy airstream, specific air-blowing draught effect is shown in shown in Fig. 9.
Four：Negative pressure extracting condensation
In Fig. 10, to accelerate target solution evaporation rate, solvent boiling point temperature, the constituent components of the technical program are reduced
In be provided with negative pressure extracting condensation.
Described negative pressure extracting condensation, the negative pressure produced by negative pressure generator 19 is drawn and comes from inner chamber upper body 102
Target liquid volatilization steam, and flow through Volatile Gas pin 16 and condensing unit 17；Wherein the top of condensing unit 17 passes through outside
Low-temperature circulating device 18 condenses the volatilization steam of the target liquid flowed through, to reduce pollution of the volatilization steam to environment；Condensing unit
17 bottoms are equipped with condensate discharge valve 20, to discharge waste liquid by setup program.
The bottom of condensing unit 17 in the negative pressure extracting component being related in technical solution of the present invention, with condensation waste discharge function
Control valve, can exclude waste liquid by setup program, reduce environmental pollution.
Five：Evaporative component is rocked in rotation
In fig. 11, to accelerate target solution evaporation rate, solution evaporation area is increased, technical scheme is provided with
Evaporative component is rocked in rotation.
Described rotation rocks evaporative component on basic component 22, has been coupled by universal connector 21 equipped with constant volume chamber
1 infrastructure component；The output shaft end of motor 25 on basic component 22 is provided with eccentrically weighted shaft 24, and passes through ball
Bearing 23 is connected on the support connector 3 of infrastructure component；Rotary power, the ball bearing 23 and ten thousand provided by motor 25
Couple to connector 21, infrastructure component and the target liq of constant volume intracavitary therein can be made to be waved with certain speed, so as to increase
The disengagement area of liquid；Liquid evaporation area after the rotating speed influence of the offset of eccentrically weighted shaft 24 and motor 25 is swung.
The rotation being related in technical solution of the present invention is rocked in component, using universal connector 21, ball bearing 23 and driving
Motor 25 and eccentrically weighted shaft 24 cooperation, reaches that solution in constant volume chamber 1 is rocked in rotation, to increase volatilization area.
Six：Automatic liquid level detection components
Automatic liquid level detection components in the technical program, use a kind of differential type dual sensor detection scheme, come
The detection and liquid level detection of automatic, high precision is realized, as shown in Figure 12.
Specifically, being that the transmitting terminal and receiving terminal of differential type dual sensor group 26 are separately mounted into sensor group fixed plate
On 27, and ensure that the longitudinal axis center line of constant volume chamber 1 is fallen within the optically biaxial crossover location of differential type dual sensor group 1, i.e. two light
Axle both passes through the longitudinal axis center line of constant volume chamber 1；Sensor group fixed plate 27 is arranged on elevating mechanism 28 again, and can be with lifting
Mechanism 28 rises or falls together, i.e., can be realized by elevating mechanism 28 and different liquid levels are detected；Elevating mechanism 28 is fixed
On basic component 22.
This scheme can solve conventional level detection sensors device the problem of accuracy of detection is not high caused by emerging beam is big.
In fig. 13, the two sensors setting height(from bottom) difference of differential type dual sensor group 26 is d, and two sensors go out
Light beam 26-1,26-2 optical axis included angle are β, and ensure that the longitudinal axis center line of constant volume chamber 1 falls within the juxtaposition region of two-beam
(at longitudinal arrow lines i.e. in figure)；If single-sensor detection accuracy is a (this value in the coverage of longitudinal short transverse
As level detection precision), then need to ensure d<a.
It is seen that two sensors two beams detection light lap height be a-d, now we
The decision rule of level detection is set to：Two sensors (are carried out two sensors signal when having output signal simultaneously
AND operation, interlocking in logic judges), then it is judged to detecting liquid level；The now liquid level inspection of differential type dual sensor group 26
Survey precision is a-d.
Thus：The size of d values directly determines level detection precision, such as d=0.9a, then a-d=0.1a, i.e., smart
Degree improves 10 times；If d values by an additional automatic hoisting mechanism come dynamic regulation, you can realize level detection
Any setting and regulation of precision height.
In the technical program, using two pairs of level detection sensors devices being made up of transmitting terminal and receiving terminal, difference is constituted
Formula dual sensor, solves transparent liquid level detection sensor the problem of level detection precision is not high caused by emerging beam is big,
Realize a kind of differential type high-precision liquid level method of testing for transparency liquid；Human error and labor intensity can be reduced, is carried
The degree of accuracy of high experimental result, so as to improve efficiency；And the judgement of its critical surface is favorably improved using interlocking in logic
The degree of accuracy of experimental result.
Simultaneously as the degree of accuracy of level detection result, only between the beam of the first and second sensor two detection light
Upper and lower height and position difference d is related, and unrelated with the accuracy of detection a of single sensor, it is achieved thereby that passing through two groups of low precision
Sensor reaches the purpose of high precision test, reduces the manufacturing cost of detection device.
In addition, the adjustable mechanism by increasing by the first and second sensor height difference d, you can realize to accuracy of detection
Any adjustability.
The implementation of the technical scheme, can greatly reduce the human error and labor intensity in detection process, improve experiment knot
The degree of accuracy of fruit, so as to improve operating efficiency.
The automatic liquid level detection components being related in technical solution of the present invention, using differential type biliquid surface detector group, setting
The critical surface decision criteria of logical interlock, and can be a kind of for transparent to realize by adjusting the differences in height of two level sensors
The high-precision liquid level detecting strategy of liquid；The purpose that high precision test is reached by the sensor of two groups of low precision is also achieved,
Reduce cost.
Function match and combination of the technical program by above-mentioned six components, can give user the choosing of a variety of condensing modes
Select or iteration, and automatic liquid level detection scheme, reach rapid concentration and the purpose of volume quantitative.
The workflow of technical solution of the present invention, is shown in shown in Figure 14.
When actual use, user sets feed liquor mode, method for concentration and parameter, determined volume in interactive software interface
Value etc., subsequently into【Experiment condition is initialized】Link (in following word content, is used【】Represent certain single stepping or selection ring
Section, corresponding to a certain step process step in Figure of description), then【Sample introduction】, judge【Whether set volume is reached】If,
Reach, then start the method progress by setting【Concentration】,【Sensor detects liquid level】Liquid level data is gathered, then with user
Setting value is compared, and is judged【Whether setting volume is reached】If when comparative result is consistent, that is, completing volume and determining
Amount, then【Stop concentration】, then【Open condensation waste valve, waste discharge】, last instrument can alarm,【User is pointed out to complete real
Test】, so that user carries out follow-up experiment.
" the feed liquor mode " of the technical program has two kinds of selections, i.e. " combination sample introduction " or " liquid relief sample introduction ", and its flow is shown in figure
Shown in 15.
When user have selected【It is combined sample introduction】When, system can be automatically by the combination feed liquor pin on cavity lid 201
30 are carried out【It is combined pin sample introduction】, then judge【Whether sample introduction volume is reached】, if it is,【Close combination pin】, stop sample introduction.
When user have selected【Liquid relief sample introduction】When, system can be opened and take liquid pin hole 201-1, execution on cavity lid 201【Beat
Open sample holes】, then drive and take liquid pin 29【Liquid pin is taken to move down】, then start【Sample introduction】, judge【Whether sample introduction volume is reached】,
If it is, driving takes liquid pin 29【Liquid pin is taken to move up】,【Close sample holes】, stop sample introduction.
" concentration " of the technical program has four kinds of modes selective or iteration, and its flow is shown in shown in Figure 16；Wherein air-blowing
Mode can not be carried out simultaneously with negative pressure extracting condensing mode, and mode of heating and the mode of rocking can be superimposed into, to realize
The optional rapid concentration of multimode.
Work as selection【Heating】During mode, upper and lower two-way temperature control component can be opened simultaneously.
Upper road temperature control component therein, it is right【Inner chamber top】Outside water-bath circulation is carried out,【Start water circulating pump】, and【Open
Dynamic heating】, allow heating water bath block 10 to be the circulating water heating in bubbler 9, temperature sensor 8 is performed【Sensor detection temperature
Degree】, and judge【Whether design temperature is less than】, if it is, returning to【Start heating】, until higher than design temperature,【Close and add
Heat】；
Lower road temperature control component therein, it is right【Inner chamber bottom】, due to being provided with heat block 4 and refrigeration module 6, therefore can be simultaneously
【Start heating】With【Start refrigeration】, now temperature sensor 5 perform【Sensor detection temperature】, and judge【Whether it is less than and sets
Constant temperature degree】, if it is, returning to【Start heating】, if it is not, then【Close heating】；Judge simultaneously【Whether higher than setting temperature
Degree】, if it is, returning to【Start refrigeration】, if it is not, then【Close refrigeration】；
Because air-blowing mode and negative pressure extracting condensing mode be can not be while carry out, so when selection【Negative pressure extracting is condensed】
Afterwards, it can be judged【Whether air-blowing】, when if not, carry out【Start low-temperature circulating device】, while also can【Start negative pressure
Device】, negative pressure extracting is carried out to constant volume chamber 1, the vacuum gauge on negative pressure generator 19 can be examined to the negative pressure that it is produced
Survey, and judge【Whether setting negative pressure is reached】, if it is,【Close negative pressure generator】, if it is not, then continuing【Start negative pressure
Generator】；
Equally, selection is worked as【Air-blowing】During mode, it can be judged【Whether negative pressure extracting is condensed】, when if not, then【Open gas
Source】, then user【Set pressure】, system【Open air valve】, air-blowing is carried out to constant volume chamber 1, and judge【When whether reaching setting
Between】, if it is,【Close air valve】, if it is not, then continuing【Open air valve】；
When selection has【Rock】During mode,【Motor is rocked in startup】, then with user set time contrasted, judgement
【When whether reaching setting】, if it is,【Motor is rocked in stopping】, and【Motor is rocked in reset】, rock the zero-bit sensing of motor
Device can judge【Whether in setting zero point】, if it is,【Motor is rocked in stopping】, if it is not, then continuing【Motor is rocked in reset】.
Because technical scheme employs the adjustable automated fluid volume quantitative of precision and method for concentration, this method
Integrate concentration and volume quantitative function, it can provide heating simultaneously, revolving, negative pressure extracting, air-blowing etc. concentrate approach for
Family is selected or is superimposed, and user's selectivity is wide, flexibility is big, also accelerates experiment process, has saved time and cost；This technology side
Case additionally provides a kind of adjustable level detection machine of high-precision liquid level detecting strategy and full automatic precision for transparency liquid
Structure, using the technical scheme, is effectively reduced human error and labor intensity, the degree of accuracy of experimental result is improved, so as to improve
Operating efficiency, also, the technical scheme coordinated by the position of the sensor of two groups of low precision, has reached raising accuracy detection
Purpose, reduce manufacturing cost；In addition, the control for folding and the condensation waste discharge that the technical program passes through thief hole, is reduced
Solution evaporation, can also reduce the pollution to environment.
It the method can be widely used in the high-precision liquid level detection field of quantitative concentration process in chemical example pre-treatment.
Claims (10)
1. a kind of adjustable automated fluid volume quantitative of precision and method for concentration, it is characterized in that：
Described dosing liquid volume and method for concentration realizes more options rapid concentration by following assemblies and High Precision Automatic
The function of volume quantitative；
Component described in it at least includes：The infrastructure component that is arranged on basic component, temperature control component, air-blowing component, negative pressure are taken out
Condensation, rotation is taken to rock evaporative component and automatic liquid level detection components；
Wherein, on basic component, the infrastructure component equipped with constant volume chamber has been coupled by universal connector；
Described infrastructure component at least includes constant volume cavity, can cover and for fixing on the constant volume chamber of perforate automatically thereon
State the support connector of constant volume cavity；
Described constant volume chamber is the container with inside and outside two cavity, and a thin straight tube structure is arranged at inner chamber bottom；
On the top and bottom of the constant volume chamber, correspond to respectively and one group of temperature control component is installed；
Two groups of described temperature control components are respectively upper road closed loop temperature control system and lower road closed loop temperature control system；
The top of the constant volume chamber is connected with upper road closed loop temperature control system, the bottom of constant volume chamber, with lower road closed loop temperature
Spend control system connection；
Below support connector in infrastructure component, the rotation being fixed on basic component is coupled by ball bearing and has rocked steaming
Send out component；
By being covered on the constant volume chamber in infrastructure component, connection has air-blowing component all the way and negative pressure extracting condensation；
On basic component, relative to former and later two sides of constant volume chamber, automatic liquid level detection components are fixed with；
Described automatic liquid level detection components, using differential type dual sensor detection method, to realize the liquid level of automatic, high precision
Detect function；
Described differential type dual sensor, including the first and second level detections being made up of respectively two pairs of transmitting terminals and receiving terminal
Sensor；
By the transmitting terminal and receiving terminal of the first and second level detection sensors device, correspond to be arranged on a sensor group respectively
In fixed plate, described sensor group fixed plate is fixed on a sensor support plate, and sensor support plate is fixed in one
On elevating mechanism, described elevating mechanism drives the differential type dual sensor group on sensor support plate synchronously to make upper and lower longitudinal direction
It is mobile；By moving up and down for the first and second level detection sensors device, realize and the different liquid levels in constant volume chamber are carried out
Detection；
Wherein, the setting height(from bottom) difference of the first and second level detection sensors devices is d, and two groups of level detection sensors device emergent shafts
Angle be β, the longitudinal axis of the constant volume chamber is located at the weight of two beam light extractions of the first and second level detection sensors device
Folded region.
2. according to the adjustable automated fluid volume quantitative of precision and method for concentration described in claim 1, it is characterized in that described
Differential type dual sensor detection method, if the level detection accuracy rating of first and second sensor is a, first He
The setting height(from bottom) difference of second level detection sensors device is d, then the beam of the first and second sensor two detects the lap of light
Highly, it is the level detection accuracy rating of the first and second sensors, subtracts between the first and second level detection sensors devices
Numerical result a-d obtained by longitudinally mounted difference in height；The decision rule of liquid level to be measured is in the constant volume chamber：Only two groups biographies
When sensor has output signal simultaneously, it is judged to detecting liquid level；Now the level detection precision of differential type dual sensor group is a-
d。
3. according to the adjustable automated fluid volume quantitative of precision and method for concentration described in claim 1, it is characterized in that described
Constant volume chamber by hollow outer chamber and the inner chamber upper body that is located therein, and below the upper body of inner chamber, with thin straight tube knot
The inner chamber lower body composition of structure, is provided with opening, described inner chamber upper body is communicated with inner chamber lower body above the inner chamber upper body,
The lower end of the inner chamber lower body is enclosed construction.
4. according to the adjustable automated fluid volume quantitative of precision and method for concentration described in claim 1, it is characterized in that described
Upper road closed loop temperature control system is heating water bath formula closed loop thermal control system；Described lower road closed loop temperature control system
Unite as heating/refrigerating modular closed loop thermal control system.
5. according to the adjustable automated fluid volume quantitative of precision and method for concentration described in claim 1, it is characterized in that described
Evaporative component is rocked in rotation, including motor on basic component, eccentrically weighted shaft, ball bearing and is connected to base set
The support connector of part；
Evaporative component is rocked in described rotation, provides rotary power by motor and eccentrically weighted shaft, passes through universal connector, ball
The cooperation of bearing and motor and eccentrically weighted shaft, reaches that the purpose of constant volume luminal solution is rocked in rotation；
Evaporative component is rocked in described rotation, by making the speed of infrastructure component and the target liq of constant volume intracavitary therein to need
Degree is waved, so as to increase the disengagement area of liquid.
6. according to the adjustable automated fluid volume quantitative of precision and method for concentration described in claim 1, it is characterized in that described
Air-blowing component, the inert gas of air-blowing is provided by source of the gas, and the pressure needed is adjusted through pressure adjusting module, then through gas circuit control
After the switch control of unit, in the inner chamber upper body that constant volume chamber is entered by air-blowing needle blow；
Described air-blowing pin and the inwall of inner chamber upper body have certain angle, in the inside of inner chamber upper body, to form eddy airstream.
7. according to the adjustable automated fluid volume quantitative of precision and method for concentration described in claim 1, it is characterized in that described
Negative pressure extracting condensation, the negative pressure produced by negative pressure generator draws the volatilization steam of the target liquid from inner chamber upper body,
Described volatilization steam flows through Volatile Gas pin and condensing unit；
The volatilization steam of the target liquid flowed through is condensed by outside low-temperature circulating device on condensing unit top, to reduce volatilization
Pollution of the steam to environment；
Condensate discharge valve is housed in condensing unit bottom, to discharge waste liquid by setup program, environmental pollution is reduced.
8. according to the adjustable automated fluid volume quantitative of precision and method for concentration described in claim 1, it is characterized in that described
One and second level detection sensors device setting height(from bottom) difference d values size, it is determined that to the accuracy of detection of liquid level in quantity tube.
9. according to the adjustable automated fluid volume quantitative of precision and method for concentration described in claim 1, it is characterized in that described
Differential type dual sensor detection method, by adjusting the upper and lower height position between the beam of the first and second sensor two detection light
Difference is put, that is, the size of the first and second level detection sensors device setting height(from bottom) difference d values is adjusted, to realize to prepare liquid in constant volume chamber
Any regulation or setting of face detection accuracy height.
10. according to the adjustable automated fluid volume quantitative of precision and method for concentration described in claim 1, it is characterized in that described
The adjustable automated fluid volume quantitative of precision and method for concentration, heating, revolving, negative pressure extracting, air-blowing concentration way can be provided simultaneously
Footpath is selected for user.
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| CN106390492B (en) * | 2016-11-02 | 2018-09-18 | 北京莱伯泰科仪器股份有限公司 | The quantitative enrichment facility of multipassage rotary evaporation of the dark opaque liquid of processing |
| CN107589007B (en) * | 2017-10-18 | 2023-09-08 | 广东机电职业技术学院 | Automatic nitrogen blowing instrument |
| CN110044679A (en) * | 2018-01-15 | 2019-07-23 | 天津市恒奥科技发展有限公司 | Automatic concentration nitrogen blows tracking liquid level mechanism and its operating method |
| CN108680426B (en) * | 2018-05-16 | 2021-12-24 | 天津博纳艾杰尔科技有限公司 | Nitrogen blowing instrument |
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