CN211245579U - Automatic end point quantifying device for steam distillation and distillation instrument - Google Patents
Automatic end point quantifying device for steam distillation and distillation instrument Download PDFInfo
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- CN211245579U CN211245579U CN201921158262.5U CN201921158262U CN211245579U CN 211245579 U CN211245579 U CN 211245579U CN 201921158262 U CN201921158262 U CN 201921158262U CN 211245579 U CN211245579 U CN 211245579U
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Abstract
An automatic end point quantifying device for steam distillation comprises a base, a distillation column and a distillation column, wherein a position for placing a fraction receiving bottle is arranged on the base; a quantitative unit for monitoring the amount of fraction in the fraction receiving bottle placed on the base; and the control unit can generate a signal for controlling the on-off of the distillation circuit generating the fraction according to the signal output by the quantitative unit. The utility model discloses a vapour distillation automatic terminal point ration method and controlling means, peel the weighing, net weight weighing to the fraction receiving bottle automatically, the experimenter need not to take a sample at variable time, weigh and break circuit and stop distilling, avoid causing the excessive hidden danger of fraction because of stopping in time, reduce the repeated loaded down with trivial details work; according to the set value, the receiving amount of the fraction is automatically controlled, the precision is high, and the time and the labor are saved.
Description
Technical Field
The utility model relates to a steam distillation appearance receives automatic control device, in particular to automatic terminal point proportioning device of steam distillation.
Background
The method for measuring the nitrogen content in food such as milk powder needs a steam distillation method, and hydrides in cassava, nitrosamine in smoked meat and the like also adopt the steam distillation method to carry out sample pretreatment. The national standard stipulates that hydride detection in food needs distillation, condensation and collection of at least 240g of vapor, but at present, steam distillation at home and abroad lacks a method for automatically controlling fraction collection, the amount of a collected sample is determined by manual observation and estimation, and the produced fraction is collected into a receiving bottle and then taken out and manually weighed, so that the following problems exist:
(1) when the types or the quantity of the produced fractions are more or less, the repeated labor and the calculation times of operators are inevitably increased;
(2) in the distillation process, operators cannot leave, so that the working efficiency is low;
(3) the generation of excessive steam requires more heat energy consumption, which is not favorable for saving electric energy.
(4) Excessive distillate has the potential to damage equipment by spillage.
SUMMERY OF THE UTILITY MODEL
In view of the above, one of the main objectives of the present invention is to provide an automatic end point quantifying device for steam distillation, so as to at least partially solve at least one of the above technical problems.
In order to achieve the above object, as one aspect of the present invention, there is provided a steam distillation automatic end point quantifying apparatus comprising:
a base on which a position for placing a fraction receiving bottle is arranged;
a quantitative unit for monitoring the amount of fraction in the fraction receiving bottle placed on the base; and
and the control unit can generate a signal for controlling the on-off of the distillation circuit generating the fraction according to the signal output by the quantitative unit.
As another aspect of the present invention, there is provided a distiller including the automatic end point quantifying device for distillation as described above.
Based on the technical scheme, the utility model discloses an automatic terminal point proportioning device of steam distillation has one of following advantage at least for prior art:
1. the automatic end point quantifying method and the control device for the steam distillation automatically peel and weigh the distillation receiving bottle, and the experimenter does not need to sample, weigh and stop distilling in an open circuit at variable time, thereby avoiding the hidden danger of fraction overflow caused by untimely stop and reducing repeated fussy work; according to the set value, the receiving amount of the fraction is automatically controlled, the precision is high, and time and labor are saved;
2. the whole process of metering and receiving the fractions is automatically carried out, the weight of the fractions is connected with the heater and the backflow passage, the fractions are blocked from flowing out in time, the working passage of the equipment is disconnected, the working energy consumption of the equipment is reduced to the maximum extent, the labor intensity of experiment operators is reduced, the receiving precision, accuracy and working efficiency of the distillation fractions are improved, repeated and complicated manual operation is reduced, the occurrence of manual operation errors is avoided, the work of experiment observation, analysis, recording and the like can be concentrated, and the successful completion of the experiment is facilitated;
3. the utility model has the advantages of the utility model discloses the design has human-computer interaction system, and the user can set for various parameters through human-computer interaction system, and the self-stopping heating when reaching the distillation terminal point.
Drawings
Fig. 1 is a schematic structural diagram of an automatic weighing apparatus according to an embodiment of the present invention;
fig. 2 is a schematic view of a weighing feedback end point control according to an embodiment of the present invention;
fig. 3 is a flowchart of a main procedure of the weighing endpoint control according to an embodiment of the present invention.
In the above figures, the reference numerals have the following meanings:
1. a distillate receiving bottle; 2. a tray; 3. a pressure sensitive bridge; 4. a buffer sleeve; 5. a spring; 6. a shock-absorbing post; 7. a base; 8. performing 24-bit AD (analog-to-digital) conversion; 9. a control unit; 10. a liquid crystal screen; 11. A drive power supply; 12. a heater; 13. an indicator light; 14. an alarm.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings.
An automatic end point dosing device for distillation comprising:
a base on which a position for placing a fraction receiving bottle is arranged;
a quantitative unit for monitoring the amount of fraction in the fraction receiving bottle placed on the base; and
and the control unit can generate a signal for controlling the on-off of the distillation circuit generating the fraction according to the signal output by the quantitative unit.
Wherein the quantitative unit comprises a pressure-sensitive bridge for monitoring the weight of the fraction, and the pressure-sensitive bridge is arranged on the base; and &
The dosing unit comprises a timing assembly for timing the distillation time.
Wherein, when the quantitative unit comprises a pressure-sensitive bridge, a tray for containing the fraction receiving bottle is arranged between the pressure-sensitive bridge and the fraction receiving bottle.
When the quantitative unit comprises a pressure-sensitive bridge, a damping device is arranged between the pressure-sensitive bridge and the base;
wherein, the damping device includes:
the shock absorption columns are arranged on the base;
the buffer sleeves are connected to the bottom of the pressure-sensitive bridge and sleeved on the shock absorption columns;
and the spring is connected between the shock absorption column and the buffer sleeve.
The control unit comprises an analog-to-digital converter and a logic control component, and the pressure-sensitive bridge transmits signals to the logic control component through the analog-to-digital converter;
wherein the analog-to-digital converter is a 24-bit analog-to-digital converter.
The automatic distillation end point quantifying device comprises a liquid crystal screen for displaying the weight of the fraction, and the liquid crystal screen displays the amount of the fraction monitored by the quantifying unit under the control of the control unit.
Wherein, the distillation automatic end point quantifying device comprises an indicator light for displaying that the distillation circuit is in a heating state.
Wherein, the automatic distillation end point quantifying device comprises an alarm for reminding the distillation to reach the end point.
The automatic distillation end point quantifying device comprises a human-computer interaction unit which enables a user to set various parameters so as to automatically stop heating when the distillation end point is reached.
The utility model also provides a distillation apparatus, which is internally provided with the distillation automatic end point quantifying device.
The utility model discloses an automatic terminal point proportioning device of distillation can adopt following method to carry out the automatic terminal point ration of distillation, include:
after the empty fraction receiving bottle is placed on a tray on a base and weighed, the control unit automatically peels and resets;
selecting a weighing or timing mode to carry out automatic end point quantification of distillation, and simultaneously displaying the weight of distilled fractions or the distillation time on a liquid crystal screen;
when the set end point is reached, the control unit controls the distillation to stop, the heating state indicator lamp to be turned off, and the alarm starts to give an alarm.
Wherein the weight set when the weighing mode is adopted is 230-250g, preferably 240 g;
wherein the timing set when the timing mode is adopted is 9.5-10.5min, preferably 10 min.
The control unit may be a single chip, a single board computer, a PLC (programmable logic controller), an FPGA (programmable gate array), a microcomputer, a server, or other devices having a logic control component.
In a preferred embodiment, the present invention adopts, for example, the following technical solutions:
the automatic end point quantitative control device for the steam distillation (the automatic end point quantitative device for the steam distillation) comprises an automatic weighing device and a weighing feedback end point control device, wherein the automatic weighing device comprises a fraction receiving bottle, a tray, a pressure-sensitive bridge, a buffer sleeve, a spring, a shock absorption column, a base, 24-bit AD (analog-to-digital) conversion, a control unit, a liquid crystal screen, a driving power supply, a heater, an indicator light and an alarm; the pressure sensitive bridge is arranged on a base on the inner side of the shell, a tray is arranged above the pressure sensitive bridge, the fraction receiving bottle is placed in the tray, a damping device is arranged between the pressure sensitive bridge and the base, the pressure sensitive bridge transmits a signal to the control unit through 24-bit AD analog-to-digital conversion, the 24-bit AD analog-to-digital conversion adopts STM32F407ZGT6 as a main control chip and synchronously acquires the voltage value of the pressure sensor, meanwhile, the weight of liquid in the receiving bottle is displayed on the liquid crystal screen, when the liquid in the receiving bottle reaches a set value, the control circuit sends an instruction to stop heating, the heating state indicator lamp is turned off, and the alarm starts to give an alarm.
The control device further comprises a human-computer interaction system, and the human-computer interaction system is connected with the control unit.
Wherein, a tray is arranged above the pressure sensitive bridge, and a shockproof device is arranged below the tray.
The technical solution of the present invention is further explained by the following specific embodiments with reference to the attached drawings. It should be noted that the following specific examples are only illustrative, and the scope of the present invention is not limited thereto.
A water vapor distillation automatic end point quantification method and a control device are disclosed, as shown in figure 1, the method comprises a fraction receiving bottle 1, a tray 2, a pressure-sensitive bridge 3, a buffer sleeve 4, a spring 5, a shock absorption column 6, a base 7, a 24-bit AD (analog-to-digital) conversion 8, a control unit 9, a liquid crystal screen 10 and a driving power supply 11; the pressure sensitive bridge 3 is arranged on a base 7 on the inner side of the shell, the tray 2 is arranged above the pressure sensitive bridge 3, the fraction receiving bottle 1 is placed in the tray 2, a damping device is arranged between the pressure sensitive bridge 3 and the base 7, the pressure sensitive bridge 3 transmits a signal to a control unit 9 through 24-bit AD (analog-to-digital) conversion 8, meanwhile, the weight of distillate in the fraction receiving bottle 1 is displayed on a liquid crystal screen, when liquid in the receiving bottle reaches a set value (240g), the control unit 9 sends an instruction to control a heater 12 to stop heating, a heating state indicator lamp 13 is turned off, and an alarm 14 starts to give an alarm.
The utility model discloses still include human-computer interaction system, human-computer interaction system with the control unit is connected, and the user can set for various parameters through human-computer interaction system, and the automatic shutdown heating reaches the distillation purpose when terminal point.
The tray 2 is arranged above the pressure-sensitive bridge 3, and the shockproof device is arranged below the tray 3, so that the shockproof purpose is achieved, and the measurement is more accurate.
When the empty fraction receiving bottle 1 is used, after the fraction receiving bottle 1 is placed on the weighing tray 2, the empty fraction receiving bottle 1 is weighed, and the control unit automatically peels and resets. The pressure-sensitive bridge 3 transmits signals to a control circuit through a 24-bit AD analog-to-digital conversion 8, the 24-bit AD analog-to-digital conversion 8 adopts STM32F407ZGT6 as a main control chip, an XFW-HX711 chip is adopted to collect voltage values of a pressure sensor, simultaneously the weight of distillate in a receiving bottle or the distillation time is displayed on a liquid crystal screen 10, a weighing mode or a timing mode is selected on the liquid crystal screen before distillation, after the weighing mode is selected, the weight of the distillate to be collected is set to be 240g, when the liquid in the distillate receiving bottle 1 reaches 240g, the control circuit sends out an instruction to stop heating, a heating state indicator lamp 13 is turned off, and an alarm 14 starts to give an alarm. After the timing mode is selected, the time required for distillation is set, for example, 10min, when the distillation time reaches 10min, the control circuit sends out an instruction to stop heating, the heating state indicator lamp 13 is turned off, and the alarm 14 starts to give an alarm.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. An automatic end point dosing device for distillation, comprising:
a base on which a position for placing a fraction receiving bottle is arranged;
a dosing unit for monitoring the amount of distillate in a distillate receiving vial placed on a base, the dosing unit comprising a pressure sensitive bridge for monitoring the weight of the distillate, the pressure sensitive bridge being disposed on the base, a shock absorbing device being disposed between the pressure sensitive bridge and the base, the shock absorbing device comprising: the shock absorption columns are arranged on the base; the buffer sleeves are connected to the bottom of the pressure-sensitive bridge and sleeved on the shock absorption columns; the spring is connected between the shock absorption column and the buffer sleeve; and
and the control unit can generate a signal for controlling the on-off of the distillation circuit generating the fraction according to the signal output by the quantitative unit.
2. The automatic end of distillation dosing device of claim 1,
the dosing unit comprises a timing assembly for timing the distillation time.
3. The automatic end of distillation dosing device of claim 1,
a tray for containing the fraction receiving bottle is arranged between the pressure sensitive bridge and the fraction receiving bottle.
4. The automatic end of distillation dosing device of claim 1,
the control unit comprises an analog-to-digital converter and a logic control component, and the pressure-sensitive bridge transmits signals to the logic control component through the analog-to-digital converter;
the analog-to-digital converter is a 24-bit analog-to-digital converter.
5. The automatic end of distillation dosing device of claim 1,
the distillation automatic end point quantifying device comprises a liquid crystal screen for displaying the weight of the fraction, and the liquid crystal screen displays the amount of the fraction monitored by the quantifying unit under the control of the control unit.
6. The automatic end of distillation dosing device of claim 1,
the automatic distillation end point quantifying device comprises an indicator light for displaying that the distillation circuit is in a heating state.
7. The automatic end of distillation dosing device of claim 1,
the automatic distillation end point quantifying device comprises an alarm for reminding that the distillation reaches the end point.
8. The automatic end of distillation dosing device of claim 1,
the automatic distillation end point quantifying device comprises a human-computer interaction unit which can enable a user to set various parameters so as to automatically stop heating when the distillation end point is reached.
9. A distiller characterized by containing an automatic end point quantifying device for distillation according to any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921158262.5U CN211245579U (en) | 2019-07-22 | 2019-07-22 | Automatic end point quantifying device for steam distillation and distillation instrument |
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| CN201921158262.5U CN211245579U (en) | 2019-07-22 | 2019-07-22 | Automatic end point quantifying device for steam distillation and distillation instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110270123A (en) * | 2019-07-22 | 2019-09-24 | 天津大学 | The automatic endpoint quantification device and method of steam distillation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110270123A (en) * | 2019-07-22 | 2019-09-24 | 天津大学 | The automatic endpoint quantification device and method of steam distillation |
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